JP6136848B2 - Hot water storage water heater - Google Patents

Description

  The present invention relates to a hot water storage type hot water supply apparatus.

  Conventionally, a hot water storage tank that stores hot water heated by a heating device, a hot water pipe that guides hot water in the hot water storage tank to a faucet or a bathtub, and heat that exchanges heat between the hot water in the hot water storage tank and brine (heat medium) Some have an exchanger and a heating circuit that circulates brine between the heat exchanger and the floor heating unit (for example, Patent Document 1).

  As a result, a hot water supply function that guides hot water in the hot water storage tank to a faucet or a bathtub, and a heating function that transfers thermal energy from the hot water in the hot water storage tank to the floor heating unit and heats the floor heating unit by this thermal energy. To prepare.

Patent No. 4640072 specification

  In the hot water storage type hot water supply apparatus of Patent Document 1, heat is exchanged between hot water in the hot water storage tank and brine in order to transfer thermal energy from the hot water in the hot water storage tank to the floor heating unit. For this reason, when the remaining hot water in the hot water storage tank becomes less than the usage limit amount of the floor warming unit, it is considered that heating operation cannot be performed unless the remaining hot water in the hot water storage tank is increased.

  Therefore, the present inventor has studied to implement hot water supply and heating by effectively using the remaining hot water amount in the hot water storage tank.

  In view of the above points, the present invention provides hot water storage that is operated with priority given to any one of a plurality of functions using the remaining hot water in the hot water storage tank as a heat source when the remaining hot water in the hot water storage tank becomes less than a predetermined amount. An object is to provide a hot water supply apparatus.

In order to achieve the above object, according to the first aspect of the present invention, the hot water storage tank (10) for storing hot water heated by the heating device (20) and whether or not the remaining hot water in the hot water storage tank is less than a predetermined amount. When the remaining hot water determining means (S101, S110) and the remaining hot water determining means determine that the remaining hot water in the hot water storage tank is less than a predetermined amount, the remaining hot water in the hot water storage tank is used as a heat source. Prioritized operation means (S102, S105) that operates with priority given to one function among a plurality of functions, a heating device (60A, 60B, 70A, 70B) that heats the remaining hot water in the hot water storage tank as a heat source, and a heating device A heating remote controller (90a) for operating the heating device, the plurality of functions include a function for heating the heating device, the heating remote controller includes a display (93),
Priority operating means, characterized in Rukoto comprising a priority display control means (S112, S113) to be displayed on a display device the priority function information indicating one function of operation with priority among the plurality of functions.

  According to the first aspect of the present invention, when the remaining hot water in the hot water storage tank becomes less than a predetermined amount, one of the plurality of functions using the remaining hot water in the hot water storage tank as a heat source can be preferentially operated. it can.

  The predetermined amount is a remaining hot water amount that is larger than the use limit amount of the floor warming unit.

  In addition, the code | symbol in the bracket | parenthesis of each means described in this column and the claim shows the correspondence with the specific means as described in embodiment mentioned later.

It is a figure showing the whole hot water storage type hot water supply device 1 composition in a 1st embodiment of the present invention. It is a front view of the heating remote control of FIG. It is a flowchart which shows the heating operation control process of the hot water supply control part of FIG. It is a flowchart which shows the remote control display process of the hot water supply control part of FIG. It is a front view of the heating remote control of FIG. It is a flowchart which shows the priority function setting process of the hot water supply control part of FIG. It is a figure which shows the image for making a user select a priority function with the heating remote control of FIG. It is a flowchart which shows the heating operation control process of the hot water supply control part of 2nd Embodiment of this invention. It is a flowchart which shows the priority function setting process of the hot water supply control part of 2nd Embodiment. It is a figure which shows the image for making a user select a priority function with the heating remote control of 2nd Embodiment. It is a flowchart which shows the heating operation control process of the hot water supply control part of 3rd Embodiment of this invention. It is a flowchart which shows the priority function setting process of the hot water supply control part of 3rd Embodiment. It is a figure which shows the image for making a user select a priority function with the heating remote control of 3rd Embodiment. It is a figure which shows the display of the heating remote control of 3rd Embodiment. It is a flowchart which shows the heating operation control process of the hot water supply control part of 4th Embodiment of this invention. It is a flowchart which shows the priority function setting process of the hot water supply control part of 4th Embodiment. It is a figure which shows the image for making a user select a priority with the heating remote control of 4th Embodiment. It is a flowchart which shows the tank increase control process of the hot water supply control part of 5th Embodiment of this invention. It is an image for encouraging a user to perform a tank increase control process with the heating remote controller of the fifth embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following embodiments, parts that are the same or equivalent to each other are given the same reference numerals in the drawings in order to simplify the description.

(First embodiment)
In FIG. 1, the whole structure of the hot water storage type hot water supply apparatus 1 which concerns on 1st Embodiment of this invention is shown.

  The hot water storage type hot water supply apparatus 1 of the present embodiment uses hot water stored in a hot water storage tank 10 for a hot water supply function to a kitchen, a washroom, a bath, etc., and uses the stored hot water as a primary heat source. A heat exchanger 30 that heats the fluid to be heated that circulates on the next side is provided, which is used for a bath water replenishment function and a heating function.

  First, as shown in FIG. 1, the hot water supply function is a hot water storage tank 10 for storing hot water supply water therein, and a low temperature hot water supply water is taken out from the lowermost part 10c in the hot water storage tank 10 and is heated to the highest temperature in the hot water storage tank 10. A hot water supply water heating circuit 21 to be sent to the upper part 10b, a heat pump heat source device 20 as a heating device for heating the hot water supply water flowing through the hot water supply water heating circuit 21, a water supply pipe 12 for supplying tap water into the hot water storage tank 10, The hot water supply pipe 13 for deriving hot water in the hot water storage tank 10, hot water supply pipes 14, 14 a, and control means (heat source control unit 41, hot water supply control unit 42) for controlling the operation of the hot water storage type hot water supply apparatus 1. ing.

  On the other hand, in the reheating function and the heating function, the primary side circuit 31 in which hot water supply water in the hot water storage tank 10 circulates to the primary side and the secondary side circuits 32 and 33 in which the heated fluid circulates to the secondary side. A heat exchanger 30, a bath water reheating device 80, floor heating units 60A and 60B as heating devices, and heating units 70A and 70B, reheating circuits 34 and 35 for connecting them, and heating circuits 36 and 37 And a hot water supply control unit 42.

  In the present embodiment, one of the secondary circuits 32 and 33 of the two circuits is referred to as a reheating heat exchanging portion 32 and the other is referred to as a heating heat exchanging portion 33.

  Next, the components constituting the hot water supply function will be described more specifically. The hot water storage tank 10 is formed of a vertically long metal-made container (for example, made of stainless steel) having excellent corrosion resistance, and heat insulation (not shown) on the outer peripheral portion. The material is arranged so that the hot water supply water can be kept warm for a long time. A water supply port 10a is provided on the bottom surface of the hot water storage tank 10, and a water supply pipe 12 serving as a water supply path is connected to the water supply port 10a.

The water supply pipe 12 is provided with a water supply thermistor 51 that detects the water supply temperature, and outputs temperature information in the water supply pipe 12 to the hot water supply control unit 42.
The water supply pipe 12 is provided with an on-off valve 51a and a flow rate counter 51b. The on-off valve 51 a is controlled by the hot water supply control unit 42 to open and close the water supply pipe 12. The flow rate counter 51 b detects the amount of water supplied through the water supply pipe 12. The flow rate information of the feed water detected by the flow rate counter 51 b is output to the hot water supply control unit 42.

  In addition, the water supply pipe 12 is provided with a pressure reducing check valve (not shown) that adjusts the water pressure of the tap water introduced into the water supply port 10a to a predetermined pressure and prevents the backflow of hot water in the case of water interruption. Yes. Further, the downstream end of the water supply pipe 12 is connected to one inlet side of the hot water mixing valve 15 and the hot water mixing valve 15a.

  A hot water supply port 10b is provided at the uppermost part of the hot water storage tank 10. The hot water supply port 10b is a hot water supply path for deriving hot water supply water out of the hot water supply water stored in the hot water storage tank 10. A tube 13 is connected. A discharge pipe 13a provided with an air relief valve 19 is connected in the course of the hot water supply pipe 13, and when the pressure in the hot water storage tank 10 rises above a predetermined pressure, The hot water supply water is discharged to the outside so as not to damage the hot water storage tank 10 and the like.

  A hot water supply mixing valve 15 and a hot water filling mixing valve 15a are provided at the downstream end of the hot water supply pipe 13, and hot water supply pipes 14 and 14a, which are mixed hot water paths, are connected to the downstream side thereof. Further, the hot water supply pipes 14 and 14a include a hot water thermistor 52 and 52a for detecting the hot water temperature of the supplied hot water, and a flow rate counter for detecting flow information of the hot water flowing through the hot water supply pipes 14 and 14a. 57 and 57a are provided, and temperature information and flow rate information detected by the hot water thermistors 52 and 52a and the flow rate counters 57 and 57a are output to the hot water supply control unit 42.

  The downstream ends of the hot water supply pipes 14 and 14a lead to unshown hot water taps and shower taps, etc., which are arranged in the kitchen, washroom, bathroom, etc., and when these hot water taps and shower taps are opened The hot water supply water adjusted to the set temperature set by the user is discharged. When the flow rate counters 57 and 57a detect the flow of hot water in the hot water supply pipes 14 and 14a, the hot water supply water is used in either a hot water tap or a shower tap. One hot water supply pipe 14 a is a hot water supply pipe for filling the bath water in the bathtub 89, and is provided with a hot water filling on-off valve 58, a flow rate counter 57 a and a check valve 59.

  The hot water on / off valve 58 is an electromagnetic valve that is controlled by the hot water supply control unit 42 to open and close the mixed hot water flowing through the hot water supply pipe 14a. The flow rate counter 57a detects the hot water flow rate flowing in the hot water supply pipe 14a. The check valve 59 is a valve that prevents the bath water in the bath water replenishing device 80 from flowing back into the hot water supply pipe 14a.

  When the hot water filling on / off valve 58 is opened to fill the bathtub 89 with hot water, hot water, or hot water, the on / off valve 85, which will be described later, is controlled to open, and is detected by the water pressure switch 84. When the water level that has been reached reaches a predetermined level, the hot water on / off valve 58 and the on / off valve 85 are closed, and hot water of a set flow rate is filled in the bathtub 89. Further, the hot water and the hot water are controlled so that the mixed hot water having a predetermined flow rate is discharged based on the flow rate information detected by the hot water flow rate counter 57a.

  Meanwhile, the hot water mixing valve 15 and the hot water mixing valve 15a are temperature control valves for adjusting the hot water temperature of hot water supplied to the hot water supply pipes 14 and 14a, and the hot water supply pipe 13 side, the hot water supply pipe 12 side, The mixing ratio of hot water supply water and tap water is adjusted by adjusting the opening area ratio. That is, the temperature is adjusted so that the set temperature is set by the user.

  The mixing valves 15 and 15a are electrically connected to the hot water supply controller 42 and controlled based on temperature information detected by the hot water thermistors 52 and 52a, the hot water thermistor 51, and a hot water storage thermistor 54 described later. Is done. The mixing valves 15 and 15a are controlled to perform feedback control based on temperature information detected by the hot water thermistors 52 and 52a.

  On the outer wall surface of the hot water storage tank 10, a plurality of (5 in this example) hot water storage thermistors 54, which are water temperature sensors for detecting the hot water storage amount or the hot water storage temperature, are arranged in the vertical direction (the height of the tank). The temperature information at each water level of the hot water supply water filled in the hot water storage tank 10 is output to the hot water supply control unit 42 at substantially equal intervals.

  Therefore, the hot water supply control unit 42, based on the temperature information from the plurality of hot water storage thermistors 54, the position of the hot water for boiling hot water in the hot water storage tank 10 (that is, the remaining hot water amount) and the upper part of the hot water storage tank 10. It is possible to detect the boundary position between the heated hot water temperature and the low-temperature hot water supply water before being heated below the hot water storage tank 10, and the hot water temperature at each water level can be detected. Of the plurality of hot water storage thermistors 54, the hot water storage thermistor 54 provided at the uppermost part has a function of detecting the temperature of the hot water used for hot water supply.

  Next, the heat pump heat source unit 20 that heats hot water in the hot water storage tank 10 uses, for example, a supercritical heat pump cycle in which the refrigerant pressure on the high pressure side is equal to or higher than the critical pressure of the refrigerant by using carbon dioxide gas as the refrigerant. doing. As is well known, this heat pump cycle is composed of refrigeration cycle functional parts such as a refrigerant compressor (not shown), a heating heat exchanger for heating hot water, an expansion valve, a refrigerant evaporator and an accumulator. Incidentally, the refrigerant compressor is driven by a built-in electric motor, and compresses and discharges the gas-phase refrigerant sucked from the accumulator to a critical pressure or more.

  The heating heat exchanger exchanges heat between the refrigerant and the hot water supply water. For example, the refrigerant passage through which the refrigerant flows and the hot water supply water passage through which the hot water supply water are provided in a double pipe structure, and the flow direction of the refrigerant and the hot water supply It is a counterflow type heating heat exchanger comprised so that the flow direction of irrigation water may oppose.

  The expansion valve depressurizes the refrigerant flowing out from the heating heat exchanger and supplies it to the refrigerant evaporator. The refrigerant evaporator evaporates the refrigerant decompressed by the expansion valve by heat exchange with the atmosphere. The accumulator performs gas-liquid separation of the refrigerant flowing out from the refrigerant evaporator so that only the gas-phase refrigerant is sucked into the refrigerant compressor and stores excess refrigerant in the cycle.

  Further, the hot water supply water passage of the heating heat exchanger is connected to the hot water storage tank 10 via the hot water supply water heating circuit 21 described above, and the electric pump (not shown) is operated to circulate the hot water supply water in the hot water storage tank 10. The upstream end of the hot water supply water heating circuit 21 is connected to the bottom portion 10 c of the hot water storage tank 10, and the downstream end of the hot water supply water heating circuit 21 is connected to the upper portion 10 d of the hot water storage tank 10. As a result, the hot water supply water heated by heat exchange with the refrigerant in the heating heat exchanger is sent to the upper part 10d of the hot water storage tank 10, so that the hot water supply water is sequentially stored from the upper side to the lower side of the hot water storage tank 10. go.

  The heat pump heat source machine 20 is operated by a control signal from the heat source control unit 41 and outputs an operating state to the heat source control unit 41. In addition, the AC power is used as the power source, and the heat storage operation for boiling the hot water in the hot water storage tank 10 is performed mainly using the midnight power in the midnight time zone where the price setting is the cheapest. In this case, when the hot water temperature of the hot water is lowered, the boiling operation is controlled. Incidentally, according to the supercritical heat pump cycle, hot water supply water having a temperature higher than that of a general heat pump cycle (for example, 85 to 90 ° C.) can be stored therein.

  Next, the component parts that constitute the tracking function will be described more specifically. The bath water replenishing device 80 is a device that recirculates the bath water in the bathtub 89 to the reheating heat exchanging section 32 that is the secondary circuit of the heat exchanger 30 to retreat the bath water, and the forward pipe 82. The recirculation circuit composed of the return pipe 81 and the bypass pipe 83 and reheating circuits 34 and 35 for connecting the reheating heat exchanging section 32 of the heat exchanger 30 are connected.

  Incidentally, the forward pipe 82 side is connected to the follow-up forward pipe 34, and the return pipe 81 side is connected to the follow-up return pipe 35. Further, the forward pipe 82 includes, in order from the upstream side, a water pressure switch 84, an on-off valve 85, a second circulation pump 86, a bath water temperature thermistor 55 as a bath water temperature detecting means, a running water switch 87, and a reheating three-way valve 88. Is provided. Further, the return pipe 81 is provided with a recirculating thermistor 56 on the downstream side.

  The water pressure switch 84 is a sensor that detects the amount of hot water filled in the bathtub 89, in other words, the water pressure for determining the water level in the bathtub 89. The on-off valve 85 is an electromagnetic valve that opens and closes the bath water circulation circuit, and the second circulation pump 86 is an electric pump that pumps the bath water in the bathtub 89 to the reheating heat exchanging unit 32. The bath water temperature thermistor 55 is a water temperature sensor that detects the hot water temperature of the bath water flowing through the forward pipe 82.

  The flowing water switch 87 is a flowing water sensor for detecting whether bath water and hot water supply water described later are flowing in the direction of the reheating three-way valve 88. The reheating three-way valve 88 is a switching valve for switching the flow direction to either one of the bypass pipe 83 that causes the bath water to flow to the reheating heat exchanging section 32 or to bypass the reheating heat exchanging section 32. is there. The reheating thermistor 56 is a water temperature sensor that detects the temperature of the bath water flowing through the return pipe 81, and has a bath water temperature that is returned into the bathtub 89.

  The water pressure switch 84, the flowing water switch 87, the bath water temperature thermistor 55, and the reheating thermistor 56 are configured to output volume information, flowing water information, and temperature information to the hot water supply control unit 42. Circulation pump 86 and reheating three-way valve 88 are controlled by hot water supply control unit 42.

  Further, when detecting the temperature of the bath water in the bathtub 89 after filling, the flow direction of the reflow three-way valve 88 is switched to the bypass pipe 83 side and the second circulation pump 86 is operated, thereby The bath water is circulated in the order of the forward pipe 82, the bypass pipe 83, the return pipe 81, and the bathtub 89 so that the bath water temperature thermistor 55 detects the hot water temperature of the bath water.

  Further, when reheating, the flow direction of the reheating three-way valve 88 is switched to the reheating heat exchanging portion 32 side, so that the bath water in the bathtub 89 returns to the forward pipe 82, the reheating heat exchanging portion 32, and the return. It is circulated in order in the pipe 81 and the bathtub 89, and is controlled to circulate until the hot water temperature of the bath water detected by the bath water temperature thermistor 55 reaches a predetermined temperature.

  Next, the component parts which comprise a heating function are demonstrated more concretely. First, the floor heating units 60A and 60B are, for example, installed on a floor such as a dressing room or a kitchen, and a brine as a heat exchange medium is circulated through the pipes 63a and 63b in the floor panels 61a and 61b to be heated. Heating device for heating floor panels 61a and 61b, thermal valves 62a and 62b for opening and closing the brine flowing through the pipes 61a and 61b, a water temperature sensor (not shown) for detecting the outlet side water temperature of the floor panels 61a and 61b, and a water temperature sensor It is comprised from the floor heating control part which is not shown in figure which controls thermal valve 62a, 62b based on the exit side water temperature detected by this.

  Moreover, heating unit 70A, 70B is a heating apparatus which inhales the indoor air which is a to-be-heated fluid in a bathroom or a washroom, for example, heats it with the heat radiator 71a, 71b, blows out warm air, and heats a room | chamber interior Yes, radiators 71a and 71b, blowers 72a and 72b, on-off valves 73a and 73b for opening and closing the brine flowing through the radiators 71a and 71b, a suction temperature sensor (not shown) for detecting the suction temperature, and a suction detected by the suction temperature sensor It comprises a heating control unit (not shown) that controls the blowers 72a and 72b and the on-off valves 73a and 73b based on the temperature.

  The heating circuits 36 and 37 are circulation circuits that distribute the brine heat-exchanged by the heating heat exchanging unit 30 to the floor heating units 60A and 60B and the heating units 70A and 70B, 36 is a heating forward pipe, and 37 is Heating return pipe. The heating circuits 36 and 37 include a bypass passage 36a, a third circulation pump 38 as a secondary circulation means, a supply temperature thermistor 53a as a supply temperature detection means, a return temperature thermistor 53b as a return temperature detection means, and the like. Is provided. The bypass passage 36a is a bypass circuit that bypasses the floor heating units 60A and 60B and the heating units 70A and 70B when all of the thermal valves 62 and the on-off valves 73 are closed.

  The third circulation pump 38 is a pumping means for circulating the brine from the heating heat exchanger 33 to the floor heating units 60A and 60B and the heating units 70A and 70B. The use of the floor heating units 60A and 60B and the heating units 70A and 70B Based on the number, the hot water supply control unit 42 controls the rotation speed. The supply temperature thermistor 53a is a water temperature sensor that circulates through the heating heat exchanger 33 and detects the water temperature of the brine after heat exchange, and the return temperature thermistor 53b includes the floor heating units 60A and 60B and the heating units 70A and 70B. It is a water temperature sensor that circulates and detects the water temperature of the brine after heat exchange, and outputs temperature information detected by any thermistor to the hot water supply control unit 42.

  Next, the heat exchanger 30 is a counter-flow heat exchanger in which the primary side that is the heating side is configured by one circuit and the secondary side that is the heated side is configured by a plurality of circuits. Specifically, as shown in FIG. 1, a primary side circuit 31 through which hot water stored in the hot water storage tank 10 circulates and a plurality of (two in this embodiment) secondary through which bath water and brine circulate. It is composed of side circuits 32 and 33.

  In the hot water storage type hot water supply apparatus 1 of the present embodiment, as shown in FIG. 1, the secondary circuit 32 disposed above is connected to the bath water reheating apparatus 80 as a reheating heat exchanging section 32, and downward. The arranged secondary circuit 33 is referred to as a heating heat exchanger 33 and is connected to the heating devices 60A, 60B, 70A, and 70B.

  As shown in FIG. 1, the heat exchanger 30 has a primary side circulation circuit in the forward side pipe 16, the return pipe 17, and the first side circuit 31 so that the hot water stored in the hot water storage tank 10 flows through the primary side circuit 31. 1 circulation pump 18 etc. are comprised. The forward pipe 16 has an upstream end connected to the upper part 10 e of the hot water storage tank 10 and a downstream end connected to the inflow part of the primary circuit 31.

  The return pipe 17 has an upstream end connected to the outflow side of the primary circuit 31 and a downstream end connected to the lower portion 10 f of the hot water storage tank 10. The first circulation pump 18 is arranged in the middle of the return pipe 17 and is a pump for circulating hot water supply water in the hot water storage tank 10 to the primary side circuit 31. The first circulation pump 18 is electrically connected to the hot water supply controller 42 so that the rotational speed is controlled based on the temperature information detected by the reheating thermistor 56 and the supply temperature thermistor 53a. .

  On the other hand, the reheating heat exchanging section 32 has an inflow portion connected to the reflow return pipe 35 and an outflow portion connected to the retreating pipe 34 so as to face the flow direction of the primary circuit 31. Bath water will flow. Similarly, in the heat exchanging section 33 for heating, the inflow section and the outflow section are connected to the heating circuits 36 and 37 and the brine flows in a direction opposite to the flow direction of the primary side circuit 31. Thereby, the heat exchanger 30 forms a counterflow type heat exchanger as shown by an arrow in FIG.

  Next, the hot water supply control unit 42 is configured mainly with a microcomputer, and a preset control program is provided in the built-in ROM. The hot water supply control unit 42 receives temperature information from the thermistors 51 to 56, flow rate information from the flow rate counters 57 and 57a, operation signals from operation switches from the heating remote control 90a, kitchen remote control 90b, and bath remote control 90c. Based on this, the hot water supply pipe 13, the hot water supply pipes 14 and 14 a, the bath water reheating device 80, the heating circuits 36 and 37, and various actuators in the return pipe 17 are controlled.

  Similarly to the hot water supply control unit 42, the heat source control unit 41 is configured mainly with a microcomputer, and a built-in ROM is provided with a preset control program, and temperature from various thermistors (not shown) is provided. The actuators in the heat pump heat source unit 20 are controlled based on information and the like. In this heat source control unit 41, based on the detected temperature of the hot water storage thermistor (topmost part) 54 that detects the temperature of the hot water supply water after heating in order to keep the hot water temperature of the hot water supplied by the heating heat exchanger at a constant temperature. Therefore, the rotational speed of the electric pump is controlled.

  The heating remote controller 90a is for individually operating the floor heating units 60A and 60B and the heating units 70A and 70B remotely and individually. As shown in FIG. 2, the selection switches 91a, 91b, 91c, 91d, a determination switch 92, and a display panel 93. The kitchen remote controller 90b is provided with an operation switch for heating the hot water supply water in the hot water storage tank 10 by controlling the heat source control unit 41, an operation switch for filling the bathtub 89, and the like. The bath remote controller 90 c includes a reheating switch for replenishing the bath water in the bathtub 89.

  Next, an outline of operation of the hot water storage type hot water supply apparatus having the above configuration will be described. First, when the operation switch of the kitchen remote controller 90b is turned on (for example, when the midnight time zone is reached), the heat source controller 41 controls the heat pump cycle components in the heat pump heat source machine 20 and actuators such as a circulation pump to store hot water. The hot water in the tank 10 is heated to store hot water (for example, 85 ° C.).

  The hot water stored in the hot water storage tank 10 is used for hot water supply to the kitchen, washroom, bathroom, etc., and high temperature hot water stored in the primary circuit 31 of the heat exchanger 30 is circulated. Thus, the bath water flowing through the reheating heat exchanging section 32 and the brine flowing through the heating heat exchanging section 33 are heated and used for the reheating function and the heating function.

  First, the operation for chasing the bath water will be described. When the reheating switch of the bath remote controller 90c is operated, the bath water temperature is detected every predetermined time, and if the bath water temperature does not reach the reheating set temperature, the bath water is heated. . In other words, the hot water supply control unit 42 activates the follow-up three-way valve 88, the on-off valve 85, and the second circulation pump 86 after a predetermined time, and takes the bath water in the bathtub 89 in the order of the forward pipe 82, the bypass pipe 83 and the return pipe 81. Circulate.

  At this time, the bath water temperature is detected by the bath water temperature thermistor 55. If the detected bath water temperature is equal to or lower than the reheating set temperature, the flow direction of the reheating three-way valve 88 is switched to the reheating heat exchanging portion 32 side, and the bath water is circulated to the reheating heat exchanging portion 32. Thereby, the 1st circulation pump 18 is drive | operated, hot water supply water is distribute | circulated to the primary side circuit 31, and bath water receives the hot water hydrothermal energy, and is heated. The hot water supply water that has been heat-exchanged with the bath water is returned to the hot water storage tank 10.

  When the bath water temperature reaches the set temperature, the flow direction of the reheating three-way valve 88 is switched to the bypass pipe 83 side, the on-off valve 85 is closed, and the second circulation pump 86 and the first pump 18 are stopped. As a result, the hot water in the hot water storage tank 10 is used as a heating source, and the bath water is reheated and maintained at a set temperature.

  Next, the operation of the heating device when the floor heating units 60A and 60B and the heating units 70A and 70B are operated will be described.

  First, when an operation switch for operating the floor heating unit 60A is operated in the heating remote controller 90a, the thermal valve 62a is opened, and the third circulation pump 38 is operated. Thereby, the heated brine distribute | circulates to the piping 61a. When the operation switch for operating the floor heating unit 60B is operated in the heating remote controller 90a, the thermal valve 62b is opened, and the heated brine flows through the pipe 61b.

  Further, when the operation switch for operating the heating unit 70A is operated in the heating remote controller 90a, the on-off valve 73a is opened, the heated brine is distributed to the radiator 71a, and then the blower 72a is activated to operate the radiator. The room air is heated at 71a. Similarly, when the operation switch for operating the heating unit 70B is operated in the heating remote controller 90a, the on-off valve 73b is opened, the heated brine is circulated to the radiator 71b, and then the blower 72b is operated to dissipate heat. The room air is heated by the vessel 71b.

  Then, brine is circulated to the heating heat exchanging unit 33 by the operation of the third circulation pump 38. On the other hand, the hot water supply water in the hot water storage tank 10 is circulated to the primary side circuit 31 by the operation of the first circulation pump 18, and the brine is heated by receiving the heat energy of the hot water supply water. In addition, the hot water supply water exchanged with brine is returned to the hot water storage tank 10. Here, the rotation speeds of the first circulation pump 18 and the third circulation pump 38 are controlled so that the hot water temperature of the brine detected by the supply temperature thermistor 53a becomes a predetermined temperature.

  Thereby, while setting the flow volume which distribute | circulates to the primary side circuit 31, the flow volume of the brine which distribute | circulates the inside of the heat exchanging part 33 for heating is set. Incidentally, the predetermined temperature of the brine hot water detected by the supply temperature thermistor 53a is set to be different between the floor heating units 60A and 60B and the heating units 70A and 70B. For example, the floor heating unit 60 is operating. The temperature is about 60 ° C., and when only the heating unit 70 is operating, the temperature is about 80 ° C. This is so as not to exceed the hot water temperature in the temperature range that is optimal for floor heating.

  When the set temperature is reached, the thermal valves 62a and 62b or the on-off valves 73a and 73b are closed. At this time, when all of the thermal valves 62a and 62b and the on-off valves 73a and 73b are closed, the brine flows through the bypass passage 36a. Thus, by using the hot water supply water in the hot water storage tank 10 as a heating source, heating the brine flowing through the heating heat exchanger 33, the floor heating units 60A and 60B and the heating units 70A and 70B are used for heating. Can do. Hereinafter, floor heating units 60A and 60B and heating units 70A and 70B are collectively referred to as heating units 60A, 60B, 70A, and 70B.

  Next, the operation of this embodiment will be described. The hot water supply control unit 42 independently performs the heating operation control process, the remote control display process, and the priority function setting process. Hereinafter, the heating operation control process, the remote control display process, and the priority function setting process will be described separately.

(Heating operation control process)
FIG. 3 is a flowchart showing the heating operation control process of the hot water supply control unit 42 in the present embodiment. The heating operation control process is started when an operation for starting the operation of one of the heating units 60A, 60B, 70A, and 70B is performed on the heating remote controller 90a. Hereinafter, of the heating units 60A, 60B, 70A, and 70B, the one heating unit that has been operated to start the operation with respect to the heating remote controller 90a is referred to as a heating unit that is a target of the operation operation.

  First, in step 100, it is determined whether or not the hot water supply is set to be given priority among hot water supply and heating. If it is set so that hot water supply is given priority over heating, NO is determined in step 100.

  Next, in step 101, based on the detected temperatures of the plurality of hot water storage thermistors 54, it is determined whether the remaining hot water in the hot water storage tank 10 is less than a predetermined amount.

  Specifically, the water level of hot hot water heated in the hot water storage tank 10 is obtained based on the detected temperatures of the hot water storage thermistors 54, and the remaining hot water amount in the hot water storage tank 10 is obtained from the water level. Become. The predetermined amount is a remaining hot water amount that is larger than the use limit amount of the heating units 60A, 60B, 70A, and 70B. When the remaining hot water in the hot water storage tank 10 is less than the predetermined amount, YES is determined in step 101. Accordingly, the heating unit to be operated is stopped (step 102).

  On the other hand, when the amount of remaining hot water in the hot water storage tank 10 is greater than or equal to a predetermined amount in step 101, it is determined as NO. In this case, the heating unit to be operated is operated (step 103).

  Moreover, in step 100, when it sets so that heating may be given priority over hot water supply, it determines with YES. Accordingly, in step 104, it is determined whether or not the remaining hot water amount in the hot water storage tank 10 is small based on the detected temperatures of the plurality of hot water storage thermistors 54.

  When the remaining hot water amount in the hot water storage tank 10 is less than the predetermined amount, YES is determined in step 104 because the remaining hot water amount in the hot water storage tank 10 is small. Along with this, the heating unit to be operated is operated (step 105). Along with this, bathing the bath water in the bathtub 89 is prohibited (step 106). That is, it is prohibited to open the hot water on / off valve 58. On the other hand, when the amount of remaining hot water in the hot water storage tank 10 is greater than or equal to a predetermined amount in step 104, it is determined as NO because the remaining hot water in the hot water storage tank 10 is large. In this case, the heating unit to be operated is operated (step 103).

  As described above, when the hot water supply is given priority over the heating, and the operation for starting the operation of the floor heating unit 60A among the heating units 60A, 60B, 70A, and 70B is performed on the heating remote controller 90a, for example, 60A is stopped.

  On the other hand, when heating is prioritized over hot water supply and an operation for starting the operation of the floor heating unit 60A among the heating units 60A, 60B, 70A, 70B is performed on the heating remote controller 90a, for example, the floor heating unit 60A Is driven.

(Remote control display processing)
FIG. 4 is a flowchart showing remote control display processing of the hot water supply control unit 42 in the present embodiment.

  In step 110, it is determined whether the remaining hot water in the hot water storage tank 10 is less than a predetermined amount based on the detected temperatures of the plurality of hot water storage thermistors 54. At this time, when the remaining hot water in the hot water storage tank 10 is less than the predetermined amount, when it is determined as YES in step 110, the process proceeds to step 111 to determine whether or not heating is set to have priority over hot water supply. judge.

  Here, when it is set so that hot water supply is given priority over heating, NO is determined in step 111, and the heating remote controller is set with priority function information indicating that hot water supply is given priority over heating. It is displayed on the display panel 93 of 90a (step 112). For example, as shown in FIG. 2, characters 95 a indicating “hot water supply priority” are displayed on the display panel 93.

  Further, if the heating is set to be prioritized over the hot water supply, it is determined as YES in Step 111, and the heating remote controller 90a is set as the priority function information indicating that the heating is set to be prioritized over the hot water supply. Is displayed on the display panel 93 (step 113). For example, as shown in FIG. 5, characters 95 b such as “heating priority” are displayed on the display panel 93.

  In this way, the fact that either hot water supply or heating is set to be prioritized is displayed on the display panel 93 in characters such as “hot water supply priority” or “heating priority”.

  Next, in step 114, the remaining hot water amount information indicating the remaining hot water amount in the hot water storage tank 10 is displayed on the display panel 93 of the heating remote controller 90a. For example, as shown in FIGS. 2 and 5, a graphic 97 indicating the remaining hot water amount in the hot water storage tank 10 is displayed on the display panel 93. The figure 97 shows the amount of remaining hot water by the number of bars extending horizontally. 2 and 5, five bars are displayed to indicate that the remaining hot water amount is at the highest level.

  Next, in step 115, the temperature of the remaining hot water based on the detected temperatures of the plurality of hot water storage thermistors 54, the timer setting time, the current time, etc. are displayed on the display panel 93 with characters 97, 98, 99, 100.

  Further, when the remaining hot water in the hot water storage tank 10 is equal to or more than a predetermined amount based on the detected temperatures of the plurality of hot water storage thermistors 54 in step 110, it is determined as NO and the process proceeds to step 114.

(Priority function setting process)
FIG. 6 is a flowchart showing a priority function setting process of the hot water supply control unit 42 in the present embodiment. The priority setting process is a process for setting to prioritize the operation of either heating or hot water supply by the heating remote controller 90a.

  First, in step 120, it is determined whether or not an operation for determining that hot water supply is a priority function has been performed by the user.

  For example, the display panel 93 of the heating remote controller 90a displays a screen (see FIG. 7) for allowing the user to select a priority function, and the cursor on the screen is operated by operating the selection switches 91b and 91d. If K is displayed over the letter 94g indicating “hot water supply priority” and the determination switch 92 is operated, it is determined that the user has performed an operation to determine that hot water supply is the priority function. Is determined. Accordingly, it is set that the selected hot water supply is a priority function (step 122). That is, it is determined that the hot water supply is given priority over the heating.

  On the other hand, with the display panel 93 of the heating remote controller 90a displayed on the display panel 93 for the user to select the priority function (see FIG. 7), the cursor in the screen is operated by operating the selection switches 91b and 91d. When K is displayed over the letter 94h indicating “heating priority” and the determination switch 92 is operated, it is assumed that the user has performed an operation to determine that the hot water supply is to be a heating function. Is determined. Accordingly, it is set that the selected heating is a priority function (step 121). That is, it is determined that the heating is given priority over the hot water supply.

  According to this embodiment described above, the hot water storage type hot water supply apparatus 1 includes the hot water storage tank 10 that stores hot water heated by the heat pump heat source unit 20, and the hot water supply control unit 42 has a remaining hot water amount in the hot water storage tank 10 less than a predetermined amount. When it is determined that it is, one of the hot water supply and heating using the remaining hot water in the hot water storage tank 10 as a heat source can be preferentially operated. Therefore, in the hot water storage type hot water supply apparatus 1, when the remaining hot water in the hot water storage tank 10 is reduced, one of hot water supply and heating can be automatically operated with priority. Thereby, hot water supply or heating can be implemented by effectively using the remaining hot water in the hot water storage tank 10.

In the present embodiment, the hot water supply control unit 42 displays the remaining hot water amount information and priority function information in the hot water storage tank 10 on the display panel 93 of the heating remote controller 90a. Therefore, before starting the heating operation, it is possible to notify the user whether or not the heating operation is possible. Thereby, the convenience of the hot water storage type hot water supply apparatus 1 can be improved.
(Second Embodiment)
In the first embodiment, the example in which one of hot water supply and heating is given priority over the other regardless of the season has been described, but instead, the heating is given priority over the hot water supply only in winter. An example will be described.

  The heating operation control process and the priority function setting process are different between the present embodiment and the first embodiment. Therefore, as an explanation of the operation of the present embodiment, the heating operation control process and the priority function setting process of the present embodiment will be described.

(Heating operation control process)
FIG. 8 is a flowchart showing the heating operation control process of the hot water supply control unit 42 in the present embodiment. The flowchart of FIG. 8 is used instead of the flowchart of FIG. 8, the same reference numerals as those in FIG. 3 denote the same steps.

  First, in step 100, it is determined whether or not the hot water supply is set to be given priority among hot water supply and heating. If it is set so that hot water supply is given priority over heating, NO is determined in step 100. In this case, similarly to the first embodiment, the processing of steps 101 and 102 or the processing of steps 101 and 103 is executed. Thereby, when the remaining hot water of the hot water storage tank 10 is less than a predetermined amount, the heating unit to be operated is stopped. On the other hand, when the remaining hot water amount in the hot water storage tank 10 is equal to or greater than a predetermined amount, the heating unit to be operated is operated.

  Moreover, in the said step 100, when it sets so that heating may be given priority over hot water supply, it determines with YES. Accordingly, in the next step 104, it is determined whether the remaining hot water in the hot water storage tank 10 is less than a predetermined amount based on the detected temperatures of the hot water storage thermistors 54.

  At this time, if the remaining hot water in the hot water storage tank 10 is greater than or equal to a predetermined amount, NO is determined in step 104. Accordingly, in the next step 103, the heating unit to be operated is operated.

  On the other hand, when the remaining hot water in the hot water storage tank 10 is less than the predetermined amount in step 104, it is determined as YES. At this time, in step 104a, it is determined whether or not the current season is summer (June, July, August).

  At this time, if the current season is summer, YES is determined in step 104a. Accordingly, in the next step 102a, the operation of the heating unit to be operated is stopped.

  On the other hand, if the current season is a season other than summer in step 104a, NO is determined. Accordingly, in step 104b, it is determined whether or not the current season is the winter season (December, January, February). At this time, if the current season is winter, YES is determined in step 104b. Accordingly, in the next step 105a, the heating unit to be operated is operated. In addition, in the next step 105b, bathing of bath water in the bathtub 89 is prohibited. That is, it is prohibited to open the hot water filling mixing valve 15a.

  Further, in the above steps 104a and 104b, when the current season is a season other than summer and winter (March to May, September to November), it is determined as NO. Accordingly, in the next step 102b, the operation of the heating unit to be operated is stopped.

(Priority function setting process)
FIG. 9 is a flowchart showing the priority function setting process of the hot water supply control unit 42 in the present embodiment.

  First, in step 123a, it is determined whether or not an operation for causing the user to select to perform the heating operation in winter is performed. That is, it is determined whether or not an operation that gives priority to heating over hot water supply is performed by the user in winter.

  For example, the selection switches 91b and 91d are displayed on the display panel 93 of the heating remote controller 90a in a state where a screen (see FIG. 10) for allowing the user to select whether or not to give priority to heating according to the season is displayed. When the determination switch 92 is operated by displaying the cursor K in the screen over the character 94j indicating “winter operation” by the operation of, an operation for selecting the heating operation in the winter is performed by the user. It is determined as YES in step 123a. That is, it is determined that an operation in which heating is prioritized over hot water supply is performed in winter. Accordingly, it is set to perform the heating operation in winter (step 125a). In other words, it is decided to prioritize heating over hot water supply in winter.

  In step 123a, if the user does not perform an operation for selecting to perform the heating operation in winter, the determination is NO. Accordingly, in step 123b, it is determined whether or not an operation for selecting prohibiting heating in summer has been performed by the user. That is, it is determined whether or not an operation that prioritizes hot water supply over heating is performed by the user in summer.

  For example, the selection switches 91b and 91d are displayed on the display panel 93 of the heating remote controller 90a in a state where a screen (see FIG. 10) for allowing the user to select whether or not to give priority to heating according to the season is displayed. When the determination switch 92 is operated by displaying the cursor K in the screen over the character 94m indicating “Summer prohibited” by the operation of, the user selects an operation to prohibit heating in the summer. In step 123b, it is determined as YES. That is, it is determined that an operation that gives priority to hot water supply over heating is performed in summer.

  Accordingly, it is set to prohibit heating in summer (step 125b). That is, it is decided to prioritize hot water supply over heating in summer.

  In step 123b, if the operation is not performed by the user to prohibit heating in the summer, NO is determined. Accordingly, in step 123c, it is determined whether or not an operation for selecting prohibition of heating in other seasons has been performed by the user. That is, it is determined whether or not an operation that gives priority to hot water supply over heating is performed in other seasons.

  For example, the selection switches 91b and 91d are displayed on the display panel 93 of the heating remote controller 90a in a state where a screen (see FIG. 10) for allowing the user to select whether or not to give priority to heating according to the season is displayed. The operation of selecting the prohibition of heating in other seasons when the determination switch 92 is operated by displaying the cursor K in the screen over the character 94k indicating “prohibition of other seasons”. Is determined by the user as YES in step 123c. That is, it is determined that an operation that prioritizes hot water supply over heating is performed in other seasons.

  Accordingly, it is set to prohibit heating in other seasons (step 125c). That is, it is determined that priority is given to hot water supply over heating in other seasons.

  According to this embodiment described above, heating can be operated with priority over hot water supply in winter, and hot water can be operated with priority over heating in summer.

(Third embodiment)
This embodiment demonstrates the example which sets the room heated preferentially over other rooms among the four rooms in the said 1st Embodiment.

  In this embodiment, the hot water storage type hot water supply apparatus 1 heats four rooms such as a living room, a dining room, a bedroom 1, and a bedroom 2 independently by floor heating units 60A and 60B and heating units 70A and 70B. And the room heated preferentially over the other three rooms among the living room, dining room, bedroom 1, and bedroom 2 is set in advance. That is, one heating unit that is operated with priority over the other three heating units among the heating units 60A, 60B, 70A, and 70B is set.

  The heating operation control process and the priority function setting process are different between the present embodiment and the first embodiment. Therefore, as an explanation of the operation of the present embodiment, the heating operation control process and the priority function setting process of the present embodiment will be described.

(Heating operation control process)
FIG. 11 is a flowchart showing the heating operation control process of the hot water supply control unit 42 in the present embodiment. The flowchart of FIG. 11 is used instead of the flowchart of FIG. 11, the same reference numerals as those in FIG. 3 indicate the same steps. The heating operation control process is started when an operation for starting all of the heating units 60A, 60B, 70A, and 70B is performed on the heating remote controller 90a.

  First, in step 104, it is determined whether or not the remaining hot water in the hot water storage tank 10 is less than a predetermined amount based on the detected temperatures of the hot water storage thermistors 54. At this time, if the remaining hot water in the hot water storage tank 10 is less than a predetermined amount, it is determined as YES.

  Next, in step 100a, it is determined whether or not the living room among the four rooms is set to have a higher priority than the other three rooms. At this time, if the priority of the living room among the four rooms is set higher than that of the other three rooms, YES is determined in step 100a. Accordingly, in step 103a, the floor heating unit 60A is operated and the heating units 60B, 70A, and 70B are stopped. As a result, the living room is heated, and the heating of the dining room and the bedrooms 1 and 2 is stopped.

  In step 100a, if the priority order of the living room out of the four rooms is not set higher than the other three rooms, the determination is NO. Accordingly, in step 100b, it is determined whether or not the dining room out of the four rooms has a higher priority than the other three rooms. At this time, if the priority of the dining room among the four rooms is set higher than the other three rooms, YES is determined in step 100b. Accordingly, in step 103b, the floor heating unit 60B is operated and the heating units 60A, 70A, and 70B are stopped. Thereby, the dining room is heated, and the heating of the living room and the bedrooms 1 and 2 is stopped.

  In step 100b, when the priority order of the dining rooms out of the four rooms is not set higher than the other three rooms, it is determined as NO. Accordingly, in step 100c, it is determined whether or not the bedroom 1 out of the four rooms has a higher priority than the other three rooms. At this time, if the priority order of the bedroom 1 among the four rooms is set higher than the other three rooms, it is determined as YES in Step 100c. Accordingly, in step 103c, the heating unit 70A is operated and the heating units 60A, 60B, and 70B are stopped. Thereby, the bedroom 1 is heated, and the heating of the living room, the living room, and the bedroom 2 is stopped.

  In step 100c, if the priority order of the bedroom 1 out of the four rooms is not set higher than the other three rooms, it is determined as NO. Accordingly, in step 100d, it is determined whether or not the bedroom 2 among the four rooms has a higher priority than the other three rooms. At this time, if the priority order of the bedroom 2 out of the four rooms is set higher than the other three rooms, YES is determined in step 100d. Accordingly, in step 103d, the heating unit 70B is operated and the heating units 60A, 60B, and 70A are stopped. Thereby, the bedroom 2 is heated, and the heating of the living room, the living room, and the bedroom 1 is stopped.

  In the step 100d, if the priority order of the bedroom 2 among the four rooms is not set higher than the other three rooms, it is determined as NO. In other words, hot water is given priority over heating. Accordingly, in step 108, the heating units 60A, 60B, 70A, and 70B are stopped, and the heating of the living room, the dining room, the bedroom 1, and the bedroom 2 is stopped.

  It should be noted that if the remaining hot water in the hot water storage tank 10 is greater than or equal to a predetermined amount in step 104, the determination is NO. Accordingly, in the next step 103e, the heating units 60A, 60B, 70A, and 70B are operated to heat the living room, the dining room, the bedroom 1, and the bedroom 2, respectively.

(Priority function setting process)
FIG. 12 is a flowchart showing the priority function setting process of the hot water supply control unit 42 in the present embodiment.

  First, in step 130, it is determined whether or not an operation for driving the living room in priority among the four rooms over the other three rooms has been performed by the user.

  For example, on the display panel 93 of the heating remote controller 90a, the selection switches 91b and 91d are displayed in a state where a screen (see FIG. 13) for allowing the user to select a room to be preferentially heated from among four rooms is displayed. , The cursor K in the screen is displayed over the character 95b indicating “living priority” and the determination switch 92 is operated, so that the living room out of the four rooms is more than the other three rooms. It is determined as YES in step 130 because an operation for preferential driving is performed. Accordingly, it is set to drive the living room with priority over the other three rooms among the four rooms (step 131). Accordingly, in step 132, the display panel 93 of the heating remote controller 90a is used with the character 94a (see FIG. 14) indicating that the living room is heated preferentially over the other three rooms among the four rooms as priority function information. To display.

  First, in step 130, if the user has not performed an operation for driving the living room with priority over the other three rooms, the determination is NO. Accordingly, in step 133, it is determined whether or not an operation of driving the dining room in priority among the four rooms over the other three rooms has been performed by the user.

  For example, on the display panel 93 of the heating remote controller 90a, the selection switches 91b and 91d are displayed in a state where a screen (see FIG. 13) for allowing the user to select a room to be preferentially heated from among four rooms is displayed. , The cursor K in the screen is displayed over the character 95a indicating “dining priority”, and when the enter switch 92 is operated, the dining room out of the four rooms is more than the other three rooms. It is determined as YES in step 130 because an operation for preferential driving is performed. Accordingly, in step 135, characters indicating that the dining room of the four rooms is heated with priority over the other three rooms are displayed as priority function information on the display panel 93 of the heating remote controller 90a.

  Next, in step 133, if the operation of driving the dining room with priority over the other three rooms is not performed among the four rooms, it is determined as NO. Accordingly, in step 136, it is determined whether or not an operation for driving the bedroom 1 in priority among the four rooms over the other three rooms has been performed by the user.

  For example, on the display panel 93 of the heating remote controller 90a, the selection switches 91b and 91d are displayed in a state where a screen (see FIG. 13) for allowing the user to select a room to be preferentially heated from among four rooms is displayed. , The cursor K in the screen is displayed over the character 95c indicating “Bedroom 1 priority”, and when the enter switch 92 is operated, the bedroom 1 out of the four rooms is more than the other three rooms. In step 136, it is determined that the operation for preferentially driving has been performed. Accordingly, in step 138, characters indicating that the bedroom 1 of the four rooms is heated with priority over the other three rooms are displayed as priority function information on the display panel 93 of the heating remote controller 90a.

  Next, in step 136, it is determined as NO when the user has not performed an operation for driving the bedroom 1 in priority among the four rooms over the other three rooms. Accordingly, in step 139, it is determined whether or not an operation for driving the bedroom 2 in priority among the four rooms over the other three rooms has been performed by the user.

  For example, on the display panel 93 of the heating remote controller 90a, the selection switches 91b and 91d are displayed in a state where a screen (see FIG. 13) for allowing the user to select a room to be preferentially heated from among four rooms is displayed. , The cursor K in the screen is displayed over the character 95d indicating “Bedroom 2 priority”, and when the enter switch 92 is operated, the bedroom 2 out of the four rooms is more than the other three rooms. In step 139, “YES” is determined as an operation for giving priority to driving. Accordingly, in step 141, characters indicating that the bedroom 2 of the four rooms is heated with priority over the other three rooms are displayed on the display panel 93 of the heating remote controller 90a as the priority function information.

  According to the present embodiment described above, the priority room for heating in preference to the other three rooms among the living room, dining room, bedroom 1 and bedroom 2 is set in advance. As a result, only one priority room among the four rooms is heated, and heating of the other three rooms is stopped. That is, a heating unit (hereinafter referred to as a priority operation heating unit) to be operated with priority over three heating units among the heating units 60A, 60B, 70A, and 70B that heats each room independently is determined. Of the 60A, 60B, 70A, and 70B, only the priority operation heating unit can be operated, and the heating of the other three heating units can be stopped.

(Fourth embodiment)
In the third embodiment, the example in which only one of the four rooms is operated with priority over the three rooms has been described. However, in the fourth embodiment, the heating operation is performed on the four rooms. An example will be described in which priority order to be set is set and one room to be operated is determined from the four rooms according to the priority order.

  Hereinafter, in the present embodiment, the heating operation control process and the priority function setting process will be described. For convenience of explanation, the priority of the dining room is 1, the priority of the bedroom 1 is 2, the priority of the living room is 3, and the priority of the bedroom 2 is 4.

(Heating operation control process)
FIG. 15 is a flowchart showing the heating operation control process of the hot water supply control unit 42 in the present embodiment. The flowchart of FIG. 15 is used instead of the flowchart of FIG. In FIG. 15, the same reference numerals as those in FIG. 11 denote the same steps. The heating operation control process is started when an operation for starting heating of the living room by the heating unit 60B is performed on the heating remote controller 90a.

  First, in step 104, it is determined whether or not the remaining hot water in the hot water storage tank 10 is less than a predetermined amount based on the detected temperatures of the hot water storage thermistors 54. At this time, if the remaining hot water in the hot water storage tank 10 is less than a predetermined amount, it is determined as YES.

  Next, in step 150, it is determined whether or not the dining room with priority 1 is being heated. That is, it is determined whether or not the floor heating unit 60A is in operation.

  Here, when the floor heating unit 60 </ b> A is in operation, it is determined as YES in step 150, assuming that the dining room with a priority of 1 is being heated. In this case, heating of the living room by the heating unit 60B is stopped (step 153).

  If the dining room having the priority of 1 is not heated in step 150, it is determined as NO, and in the next step 151, whether or not the bedroom 1 having the priority of 2 is being heated. Determine. That is, it is determined whether the heating unit 70A is in operation.

  Here, when the heating unit 70 </ b> A is in operation, it is determined that the bedroom 2 having the priority order 2 is being heated, and YES is determined in step 151. In this case, heating of the living room by the heating unit 60B is stopped (step 154).

  In the above-described step 151, when the bedroom 1 having the priority order 2 is not heated, it is determined as NO. That is, it is determined that the dining room and bedroom 1 having higher priority than the living room are not heated. In this case, the heating operation of the living room by the heating unit 60B is started (step 152).

  In step 104, when the remaining hot water in the hot water storage tank 10 is equal to or greater than a predetermined amount based on the detected temperatures of the plurality of hot water storage thermistors 54, it is determined YES and the heating operation of the living room by the heating unit 60B is performed. Start (step 155).

(Priority function setting process)
FIG. 16 is a flowchart showing a priority function setting process of the hot water supply control unit 42 in the present embodiment.

  First, in step 160, it is determined whether or not an operation for selecting the priority order of the living room has been performed by the user.

  For example, on the display panel 93 of the heating remote controller 90a, a screen (see FIG. 17) for allowing the user to select the priority of the living room is displayed, and the cursor in the screen is displayed by operating the selection switches 91b and 91d. K1 is superimposed on the character 200 indicating “living”, and the cursor K2 is moved to one of the characters 204 to 207 indicating “priority 4”, “priority 3”, “priority 2”, and “priority 1” in the screen. When the determination switch 92 is operated in a state of overlapping, it is determined that the operation for selecting the priority order of the living room has been performed, YES.

  For example, when the determination switch 92 is operated in a state where the cursor K1 in the screen is superimposed on the character 200 indicating “living” and the cursor K2 is superimposed on the character 204 indicating “priority 3”, the priority of the living room is given. The ranking is set to 3 (step 161).

  In step 160, when the user does not perform an operation for selecting the priority order of the living room, it is determined as NO. Next, in step 162, it is determined whether or not an operation for selecting the priority order of the dining rooms has been performed by the user.

  For example, on the display panel 93 of the heating remote controller 90a, a screen (see FIG. 17) for allowing the user to select the priority order of the dining room is displayed, and the cursor in the screen is displayed by operating the selection switches 91b and 91d. K1 is superimposed on the character 201 indicating “dining” and the cursor K2 is moved to one of the characters 204 to 207 indicating “priority 4”, “priority 3”, “priority 2”, and “priority 1” in the screen. When the determination switch 92 is operated in a state of overlapping, it is determined that the operation for selecting the priority order of the dining room has been performed by the user.

  For example, when the determination switch 92 is operated by the user in a state where the cursor K1 in the screen is superimposed on the character 201 indicating “dining” and the cursor K2 is superimposed on the character 206 indicating “priority 1”, the living room The room priority is set to 1 (step 163).

  In the above step 162, when the user does not perform an operation for selecting the priority order of the dining rooms, it is determined as NO. Next, in step 164, it is determined whether or not an operation for selecting the priority order of the bedroom 1 has been performed by the user.

  For example, on the display panel 93 of the heating remote controller 90a, a screen (see FIG. 17) for allowing the user to select the priority order of the dining room is displayed, and the cursor in the screen is displayed by operating the selection switches 91b and 91d. K1 is superimposed on the character 202 indicating "Bedroom 1" and the cursor is placed on one of the characters 204 to 207 indicating "Priority 4", "Priority 3", "Priority 2", and "Priority 1" in the screen When the determination switch 92 is operated in the state where K2 is overlapped, it is determined as YES because the operation for selecting the priority order of the bedroom 1 is performed by the user.

  For example, when the determination switch 92 is operated in a state where the cursor K1 in the screen is superimposed on the character 202 indicating “Bedroom 1” and the cursor K2 is superimposed on the character 207 indicating “Priority 2”, The priority is set to 2 (step 165).

  For example, on the display panel 93 of the heating remote controller 90a, a screen (see FIG. 17) for allowing the user to select the priority order of the bedroom 2 is displayed, and the cursor in the screen is displayed by operating the selection switches 91b and 91d. K1 is superimposed on the character 205 indicating "Bedroom 2" and the cursor is placed on one of the characters 204 to 207 indicating "Priority 4", "Priority 3", "Priority 2", and "Priority 1" in the screen When the determination switch 92 is operated in a state where K2 is overlapped, it is determined as YES because the operation for selecting the priority order of the bedroom 2 is performed by the user.

  For example, when the determination switch 92 is operated in a state where the cursor K1 in the screen is superimposed on the character 203 indicating “Bedroom 2” and the cursor K2 is superimposed on the character 207 indicating “Priority 4”, The priority is set to 4 (step 167).

  As described above, the priority order of the living room, the dining room, the bedroom 1, and the bedroom 2 can be set by selecting the cursors K1 and K2 by operating the selection switches 91b and 91d.

  According to the present embodiment described above, priority is set to the heating units 60A, 60B, 70A, and 70B that independently heat the four rooms. When the user operates the heating remote controller 90a to heat the living room, heating of the living room is started when the dining room and the bedroom 1 having higher priority than the living room are not in operation. On the other hand, when the heating remote controller 90a is operated to heat the living room, heating of the living room can be stopped when the dining room and the bedroom 1 having higher priority than the living room are operating.

(Fifth embodiment)
In the fifth embodiment, in the first embodiment, when the remaining hot water in the hot water storage tank 10 becomes less than a predetermined amount, the remaining hot water in the hot water storage tank 10 is increased even if it is not the cheapest midnight time zone where the charge setting is the lowest. An example that makes it possible to start control, so-called “tank increase” will be described.

  Hereinafter, in this embodiment, the tank increase control process of the hot water supply control unit 42 will be described with reference to FIGS. 18 and 19. The tank increase control process is a control process for increasing the remaining hot water in the hot water storage tank 10.

  First, in step 170, it is determined whether the remaining hot water in the hot water storage tank 10 is less than a predetermined amount based on the detected temperatures of the hot water storage thermistors 54.

  At this time, when the remaining hot water in the hot water storage tank 10 is less than a predetermined amount, YES is determined in step 170. Accordingly, in the next step 171, a screen (see FIG. 19) for prompting the user to start the tank increase control process is displayed on the display panel 93 of the heating remote controller 90 a. That is, the display panel 93 displays information for prompting the user to perform an operation for increasing the amount of remaining hot water in the hot water storage tank 10 in the heating remote controller 90a.

  Next, in step 172, it is determined whether or not the heating remote controller 90a has been operated to start the tank increase control process.

  For example, on the screen for prompting the user to start the tank increase control process, the cursor K is placed on the character 210 that means “increase the tank” by operating the selection switches 91b and 91d, and the decision switch When 92 is operated, it is determined that the operation for starting the tank increase control process has been performed, YES.

  Accordingly, in step 173, the tank increase control process is started. Specifically, the on-off valve 51a is opened to feed water into the hot water storage tank 10 from the water supply pipe 12 through the water supply port 10a. Thereafter, the inflow of water supply into the hot water storage tank 10 is continued until the amount of water stored in the hot water storage tank 10 reaches the maximum level.

  In this case, the amount of water supplied into the hot water storage tank 10 is measured by using a flow rate counter 51b that measures the amount of water supplied through the water supply pipe 12, and the amount of water supplied into the hot water storage tank 10 is controlled. Thus, after supplying water into the hot water storage tank 10, the on-off valve 51a is closed. Then, the heating operation of the heat pump heat source unit 20 is started through the heat source control unit 41. Along with this, the heat pump heat source unit 20 heats the hot water supply water in the hot water storage tank 10. Then, if it determines with the temperature of the remaining hot water in the hot water storage tank 10 becoming more than predetermined temperature according to the detected temperature of the hot water storage thermistor 54, the boiling operation of the heat pump heat source unit 20 will be stopped. Thereby, the remaining hot water in the hot water storage tank 10 is increased.

  In step 172, when the operation for starting the tank increase control process is not performed in the heating remote controller 90a, it is determined as NO. Accordingly, the tank increase control process is not started.

  For example, on the screen for prompting the user on the display panel 93 to start the tank increase control process, the cursor K is superimposed on the character 211 that means “no tank increase” by operating the selection switches 91b and 91d. When the determination switch 92 is operated, it is determined as NO because the operation for starting the tank increase control process is not performed.

  According to this embodiment described above, when the remaining hot water in the hot water storage tank 10 becomes less than a predetermined amount, the remaining hot water in the hot water storage tank 10 can be increased in accordance with the operation of the heating remote controller 90a by the user. Thereby, since the heating operation control process demonstrated by the said 1st-4th embodiment is no longer performed, hot water supply and heating can be implemented freely.

(Other embodiments)
In the said 1st Embodiment, when the remaining hot water in the hot water storage tank 10 became less than predetermined amount, the example which displays priority function information on the display panel 93 of the heating remote control 90a was demonstrated, but it replaced with this, Regardless of the amount of remaining hot water, priority function information may be displayed on the display panel 93 of the heating remote controller 90a.

  Although the said 1st Embodiment demonstrated the example which displays the remaining hot water amount information of the hot water storage tank 10 on the display panel 93 of the heating remote control 90a when the remaining hot water of the hot water storage tank 10 is less than predetermined amount, it replaced with this. Regardless of the remaining hot water amount in the hot water storage tank 10, the remaining hot water amount information in the hot water storage tank 10 may be displayed on the display panel 93 of the heating remote controller 90a.

  In the second embodiment, the example has been described in which the hot water supply is operated with priority over the heating in other seasons other than the summer and winter, but instead, the heating has priority over the hot water supply in other seasons. You may drive. Note that the user may be able to arbitrarily set the season. That is, in the first embodiment, the example in which the summer corresponds to June to August and the winter corresponds to December to February has been described. Instead, the month corresponding to the summer is used as the user. May be arbitrarily set, or the user may arbitrarily set a month corresponding to the winter season. In addition, the user may arbitrarily set a month corresponding to another season.

  In the fourth embodiment, when the living room is operated to be heated by the heating remote controller 90a, the living room is heated according to the operation status of the floor heating unit 60A and the heating unit 70A for heating a room having a higher priority than the living room. Although the example of determining whether or not to heat the room has been described, instead of this, the following (1), (2), and (3) may be used.

  (1) When operating to heat the dining room with the heating remote controller 90a, it is determined whether or not to heat the living room according to the operation status of the floor heating unit that heats the room having a higher priority than the dining room. .

  Since the dining room has a priority of 1, the dining room is heated by the floor heating unit 60A regardless of the operating conditions of the other rooms than the dining room.

  (2) Whether or not the bedroom 1 is heated according to the operation status of the floor heating unit 60A that heats the dining room having a higher priority than the bedroom 1 when the heating remote controller 90a is operated to heat the bedroom 1. Decide.

  For example, when the dining room is heated by the floor heating unit 60A, the heating of the bedroom 1 by the heating unit 70A is stopped. When the dining room is not heated by the floor heating unit 60A, heating of the bedroom 1 by the heating unit 70A is started.

  (3) When the heating remote controller 90a is operated to heat the bedroom 2, the dining room, the living room, and the floor heating units 60A and 60B that heat the bedroom 1 and the heating unit 70A have higher priority than the bedroom 2. It is determined whether or not the bedroom 2 is heated according to the driving situation.

  For example, when the dining room, the living room, and the bedroom 1 are heated by the floor heating units 60A and 60B and the heating unit 70A, the heating of the bedroom 1 by the heating unit 70B is stopped. When the dining room, living room, and bedroom 2 are not heated by the floor heating units 60A and 60B and the heating unit 70A, heating of the bedroom 2 by the heating unit 70B is started.

  In the fourth embodiment, the priority order for each room may be displayed on the display panel 93 of the heating remote controller 90a.

  In the first to fifth embodiments, the heating operation control process, the remote control display process, and the priority function setting process are executed by the hot water supply control unit 42. Instead, the heating operation control process and the remote control display process are performed. The priority function setting process may be executed by the control unit in the heating remote controller 90a.

  In carrying out the present invention, a monitor terminal applied to a HEMS (Home Energy Management System) may be used as the heating remote controller 90a of the present invention. The monitor terminal is configured to connect each device including a domestic water heater and the like to unify the operation panel and visualize the amount of energy used on the display. That is, in carrying out the present invention, a remote controller capable of operating devices other than the water heater may be used as the hot water remote controller of the present invention as long as the water heater can be operated.

  In addition, this invention is not limited to above-described embodiment, In the range described in the claim, it can change suitably. Further, the above embodiments are not irrelevant to each other, and can be combined as appropriate unless the combination is clearly impossible.

  Hereinafter, the correspondence between the claims and the above embodiments will be described.

  The remaining hot water determination means corresponds to steps 101 and 110, the priority operation means corresponds to steps 102 and 105, the heating equipment corresponds to the floor heating units 60A and 60B, and the heating units 70A and 70B, and the display unit displays the display panel 93. The priority display control means corresponds to steps 112 and 113. The remaining hot water amount display control means corresponds to step 114, and the determination means corresponds to steps 150 and 151. The remaining hot water increase control means corresponds to step 173, the operation determination means corresponds to step 172, and the information display control means corresponds to step 171.

DESCRIPTION OF SYMBOLS 1 Hot water storage type hot water supply apparatus 10 Hot water storage tank 20 Heat pump heat source machine 41 Heat source control part 42 Hot water supply control part 61a, 61b Floor panel (heat exchanger)
71a, 71b Radiator (heat exchanger)
90a Heating remote control 91a, 91b, 91c, 91d Selection switch 92 Determination switch 93 Display panel

Claims (8)

A hot water storage tank (10) for storing hot water heated by the heating device (20);
Remaining hot water determination means (S101, S110, S104, S170) for determining whether or not the remaining hot water in the hot water storage tank is less than a predetermined amount;
When the remaining hot water determining means determines that the remaining hot water in the hot water storage tank is less than a predetermined amount, priority is given to operating one function among a plurality of functions using the remaining hot water in the hot water storage tank as a heat source. Driving means (S102, S105) ;
A heating device (60A, 60B, 70A, 70B) for heating the remaining hot water in the hot water storage tank as a heat source;
A heating remote controller (90a) for operating the heating device,
The plurality of functions include a function that the heating device heats,
The heating remote control includes a display (93),
Hot water storage hot water supply , comprising: priority display control means (S112, S113) for causing the display to display priority function information indicating one function of the plurality of functions to be operated with priority among the plurality of functions. apparatus. Wherein when the remaining hot water in the hot water storage tank is determined and the remaining hot water determination means is less than the predetermined amount, the priority display control means according to claim 1, characterized in that for displaying the priority function information to the display The hot water storage type hot water supply apparatus described in 1. The hot water storage type hot water supply apparatus according to claim 1 or 2 , further comprising a remaining hot water amount display control means (S114) for displaying the remaining hot water amount information indicating the remaining hot water amount in the hot water storage tank on the display. The said remaining hot water amount display control means displays the said remaining hot water amount information on the said display, when the said remaining hot water determination means determines that the remaining hot water in the said hot water storage tank is less than predetermined amount. 3. A hot water storage type hot water supply apparatus according to 3. A plurality of the heating devices for independently heating a plurality of rooms,
The priority operation means gives priority to one function among the plurality of functions by controlling the plurality of heating devices to preferentially heat one predetermined room among the plurality of rooms. The hot water storage type hot water supply device according to any one of claims 1 to 4 , wherein the hot water storage type hot water supply device is operated. Priorities for operation are set in advance for each of the plurality of functions,
A determination unit (S150, S151) for determining whether a function having a higher priority than a certain function among the plurality of functions is in operation;
When the determination means determines that a function having a higher priority than a certain function among the plurality of functions is in operation, the operation of the certain function is stopped,
The operation of the certain function is performed when the determination unit determines that a function having a higher priority than the certain function is stopped among the plurality of functions. Item 6. The hot water storage type hot water supply apparatus according to any one of Items 1 to 5 . A remaining hot water increase control means (S173) for increasing the amount of remaining hot water in the hot water storage tank;
Operation determining means (S172) for determining whether or not an operation for increasing the amount of remaining hot water in the hot water storage tank has been performed on the heating remote controller;
When the remaining hot water determining means determines that the remaining hot water in the hot water storage tank is less than a predetermined amount, and the operation for increasing the remaining hot water amount in the hot water storage tank is performed on the heating remote controller The hot water storage type hot water supply apparatus according to any one of claims 1 to 6 , wherein when the determination means makes a determination, the remaining hot water increase control means increases the amount of hot water in the hot water storage tank. When the remaining hot water determination means determines that the remaining hot water in the hot water storage tank is less than a predetermined amount, the information for accelerating the user to perform an operation for increasing the remaining hot water amount in the hot water storage tank The hot water storage type hot water supply apparatus according to claim 7 , further comprising information display control means (S171) for displaying on a display.

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