JP6707006B2 - Bath water heater - Google Patents

Description

The present invention relates to a bath water heater for filling a bathtub with hot water .

Conventionally, this type of hot water storage type water heater warms the water supplied from the tap water by heating means, stores the warmed hot water in a hot water storage tank, etc., and supplies hot water in the hot water storage tank to the bath to fill the bath. Was there.

In addition, in the cold winter months, the bath is cold even if the bath water is warmed, and it has the function of preventing or suppressing accidents caused by heat shock caused by moving from a room warmed by a heater to a cold place in the bathroom. Hot water storage type water heaters were known.

For example, if the temperature difference detected by the temperature sensors provided in the remote controller provided in the bathroom and the remote controller provided outside the bathroom is larger than a predetermined temperature difference, the user is warned that there is a risk of heat shock. There was a thing (patent document 1).

JP, 2011-247551, A

However, in Patent Document 1, a specific means for avoiding a heat shock is not shown by merely calling attention to call attention to the user.

Means for Solving the Problems The present invention solves the above-mentioned problems by operating a user to appropriately change the hot water supply set temperature, the bath set temperature, and the bath set amount that is the set amount of filling water, and the contents set by the operation unit. For confirming and informing the user of a predetermined operation, a remote controller having a speaker for reporting the completion of the water filling and for prompting the user to perform the predetermined operation, and control of the water filling operation for filling the bathtub with water. in the bath water heater with a control device, the provided for performing, wherein the control device, heating with when the normal water filling operation is started when the outside air temperature or the bathroom temperature is low, switches the normal water filling operation in the heating hot water filling operation Heating hot water filling operation control means for controlling the hot water filling operation is provided, and the heating hot water filling operation control means, when the heating hot water filling operation is started, prompts the operator to open the lid of the bathtub with the display unit and the notification. With the speaker, the filling temperature is set to a predetermined heating temperature that is higher than the arbitrarily set bath temperature, and the supply of hot water is started .

Further, when the heating hot water filling operation control means starts the heating hot water filling operation and supplies a first predetermined amount of hot water, the heating hot water filling operation control means causes the heating hot water filling operation control means to set an arbitrarily set bath or bath. When the set water level is reached, the filling temperature is adjusted so that the hot water in the bathtub reaches the bath set temperature, and the supply is continued. When the bath set amount or the bath set water level is reached, the supply is stopped and the heating filling operation is performed. I ended it.

Further, when the heating hot water filling operation control means starts the heating hot water filling operation and reaches a second predetermined amount, the heating hot water filling operation control means determines that the hot water in the bathtub has reached the third predetermined amount. In order to reach the bath set temperature, the bath filling temperature is kept at a predetermined regulated temperature lower than at least an arbitrarily set bath setting temperature, and then the supply is continued, and when the third predetermined amount is reached, the bath filling temperature is set. The supply was continued at a temperature, and when the bath set amount or bath set water level was reached, the supply was stopped and the heating and filling operation was terminated.

Further, the heating hot water filling operation control means confirms whether the temperature rise of the bathroom due to the heating hot water filling operation is equal to or higher than a predetermined rising temperature, and when the heating hot water filling operation is completed, a heat shock occurs if the temperature is lower than the predetermined rising temperature. It has been notified that there is a danger of.

Thus, according to the first aspect of the present invention, when the outside air temperature or the bathroom temperature is lower than the predetermined temperature, by informing the user to open the lid of the bath, the steam generated when the hot water is supplied into the bath is generated. Prevents heat shock by raising the temperature in the bathroom.When the outside air temperature or the bathroom temperature is lower than the predetermined temperature, there is no danger of heat shock and no notification is given, so it is possible to prevent heat shock with ease of use. it can.

Further, according to the invention of claim 2, in the heating hot water filling operation, hot water having a temperature higher than the bath set temperature is first filled, so that hot water flows into the cold bath bottom portion and a large amount of steam is generated. After raising the temperature and humidity of the bathroom and supplying the first predetermined amount of hot water, the bath temperature becomes the bath set temperature when the bath set temperature and the bath set amount of filling are completed. By adjusting the opening of the water filling mixing valve so that the water is continuously supplied to the bathtub, the user can complete the desired water filling, and the temperature in the bathroom can be increased by changing the temperature during cold weather. Heat shock can be prevented.

Further, according to the invention of claim 3, in the heating hot water filling operation, hot water having a temperature higher than the bath preset temperature is filled first, so that the hot hot water flows into the cold bath bottom and a large amount of steam is generated. The temperature and humidity of the bathroom can be raised, and when the third predetermined amount is reached, the bath can be heated to the bath set temperature without reaching the bath set amount or the bath set water level. Therefore, it is possible to raise the temperature in the bathroom to prevent heat shock due to temperature fluctuations in cold weather, and to supply hot water at the set temperature early even if there is a user who wants to take a bath while filling the bath. Therefore, the risk of burns due to high temperature can be suppressed.

According to the invention of claim 4, it is confirmed whether the rising temperature of the bathroom from the start to the end of the heating hot water filling operation is equal to or higher than a predetermined rising temperature, and when the heating hot water filling operation is finished, the temperature is less than the predetermined rising temperature. In this case, by alerting the user that there is a danger of heat shock, even if the bathroom temperature has not risen enough due to forgetting to open the bath lid, etc. Can be informed that there is a danger of.

1 is a schematic configuration diagram of a hot water storage type water heater according to a first embodiment of the present invention. Flowchart diagram for explaining the first embodiment of the present invention. The flowchart figure for demonstrating 2nd Embodiment of this invention. The flowchart figure for demonstrating the notification at the time of the heating hot water filling operation of this invention.

A first embodiment of a hot water storage type water heater of the present invention will be described with reference to FIG.
Reference numeral 1 is a hot water storage tank for storing hot water, 2 is a water supply pipe for supplying hot water to the hot water storage tank 1, 3 is a heat pump type heating means for heating water drawn from the lower part of the hot water storage tank 1, and 4 is a hot water outlet pipe connected to the upper part of the hot water storage tank 1. Is.

Reference numeral 5 is a hot water supply water bypass pipe branching in the middle of the water supply pipe 2, and 6 is hot water for adjusting the hot water supply set temperature by mixing hot water taken out from the hot water storage tank 1 and the hot water supply water bypass pipe 5 at an appropriate ratio. A mixing valve, 7 is a hot water supply pipe through which the hot water mixed by the hot water mixing valve 6 flows, 8 is a hot water supply flow sensor that detects the flow rate of the hot water supply pipe 7, and 9 is a hot water supply temperature sensor that detects the temperature of the hot water flowing through the hot water supply pipe 6. Reference numeral 10 denotes a hot water tap such as a shower that the user opens and closes.

Reference numeral 11 denotes a hot water supply bypass pipe branching in the middle of the water supply pipe 2, and 12 denotes hot water of the hot water storage tank 1 taken out and water supply of the bath water supply bypass pipe 11 are mixed at an appropriate ratio to adjust to a bath set temperature. A water-filling mixing valve, 13 is a water-filling pipe through which hot water mixed by the water-filling mixing valve 12 flows, 14 is a water-filling flow sensor that detects a flow rate of the water filling pipe 13, and 15 is for opening and closing the water filling pipe 13. An electromagnetic valve, 16 is a filling temperature sensor for detecting the temperature of the hot water flowing through the filling pipe 13, and 17 is a bath.

18 is a bath pipe which is a reheating route for the bath, 19 is a bath-going temperature sensor for detecting the bath-going temperature, 20 is a bath heat exchanger provided for exchanging heat with hot water in the upper part of the hot water storage tank 1, and 21 is a bath This is a bath three-way valve that switches the flow path so as to bypass the bath heat exchanger 20 in the middle of the pipe 18.

Reference numeral 22 is a control device that includes a microcomputer or the like and performs a predetermined calculation based on the output of each sensor to control the operation of the equipment. Reference numeral 23 is a temperature changing means. Reference numeral 24 is a user's operation to set the temperature of hot water and bath. A remote controller connected to the control device 22 so as to communicate with the control device 22 so as to have a hot water supply set temperature, a bath set temperature, and a bath set amount, which is the set amount of the hot water, can be appropriately changed. A switch, 26 is a display unit for confirming and notifying the contents set by the remote controller 24, 27 is a speaker for notifying the completion of the filling and prompting the user to perform a predetermined operation based on the result calculated by the control device 22, Reference numeral 28 denotes a bathroom temperature sensor provided inside the remote controller 24 for detecting the temperature inside the bathroom. The display unit 26 and the speaker 27 that prompt the user to perform a predetermined operation are collectively referred to as a notification unit.

Reference numeral 29 denotes heating hot water filling operation control for switching the normal hot water filling operation to the heating hot water filling operation for raising the temperature of the bathroom when the control device 22 determines that the temperature of the bathroom is low. It is a means.

Next, the boiling operation will be described.
When a boiling request is made, a circulation pump (not shown) in the middle of the pipe connecting the hot water storage tank 1 and the heat pump heating means 3 is driven to draw water from the lower part inside the hot water storage tank 1 and heat it by the heat pump heating means 3 to store hot water. By continuing the operation of returning to the upper part of the tank 1, the water in the hot water storage tank 1 is gradually boiled up to high temperature water.

Next, the hot water supply operation will be described.
When the hot water tap 10 is opened, water is supplied from the water supply pipe 2, flows into the lower part of the hot water storage tank 1, passes through the hot water supply water bypass pipe 5, and is pushed out from the upper part of the hot water storage tank 1 by the hot water supply water bypass pipe 5. The hot water is mixed by the hot water mixing valve 7, and hot water adjusted so that the set hot water temperature and the temperature detected by the hot water temperature sensor 9 are the same is supplied from the hot water tap 10.

Further, the normal hot water filling operation will be described.
When the bath water filling switch 25 of the remote controller 24 is pressed, the control device 22 opens the electromagnetic valve 15 to supply water from the water supply pipe 2 to flow into the lower portion of the hot water storage tank 1 and to fill the water supply bypass pipe 11 for water filling. Passing through the hot water storage tank 1 and the high temperature water extruded from the upper part of the hot water storage tank 1 and the water supply of the hot water supply bypass pipe 11 are mixed by the hot water mixing valve 12, and the bath set temperature and the temperature detected by the hot water temperature sensor 16 become the same. The hot and cold water adjusted so that it bypasses the bath heat exchanger 20 by the bath three-way valve 21 and flows into the bathtub 17 to start the filling of water. Then, the filling flow sensor 14 detects the flow rate, and when the total integrated value of the flow rates flows by the set bath amount, the controller 22 closes the solenoid valve 15 to end the filling operation. ..

Next, a first embodiment of heating and hot water filling for heating and bathing the bathroom at the same time will be described in detail with reference to the flowchart of FIG.

When the bath water filling switch 26 is pressed (S1), the control device 22 causes the detected temperature such as the bathroom temperature detected by the bathroom temperature sensor 28 provided in the remote controller 24 or the outside air temperature detected by the outside air temperature sensor to be equal to or lower than a predetermined temperature (here Then, it is confirmed whether the temperature is 15° C. or lower) (S2).

If the temperature is equal to or lower than the predetermined temperature (Yes in S2), the heating and hot water filling operation control unit 29 determines that the bathroom is cold and there is a danger of heat shock, and switches the normal hot water filling operation to the heating and hot water filling operation. First, the heating and hot water filling operation control means 29 notifies the user to open the bath lid by the display unit 26 and the speaker 27 of the remote controller 24 (S3), and causes the hot water filling valve 12 to set the bath temperature to the preset bath temperature (42 in this case). ℃), the opening is opened (S4) so that a predetermined heating temperature (here, 50°C) that can generate a large amount of steam in the bathroom is reached (S4), the solenoid valve is opened, and heating is performed. Water filling is started (S5). After that, when the first predetermined amount (here, 100 L) has been reached from the start of the heating and hot water filling operation (S6), the water filling temperature is set to a predetermined adjusted temperature (here, 38° C.) lower than at least the bath set temperature, and the bath set temperature and The opening degree of the water filling mixing valve 12 is adjusted so that the water filling is completed to the set bath amount (S7).

Here, we will explain the method for calculating the prescribed adjustment temperature. It is the switching timing of the bath setting temperature that is arbitrarily determined in advance at 42° C., the bath setting amount is 300 L, at least the predetermined heating temperature for generating steam in the bathroom at 50° C., and the filling temperature is the first. When the predetermined amount is set to 100 L, x° C., which is a predetermined adjustment temperature for making the hot water supply set temperature after the first predetermined amount, is calculated by the following calculation formula. The predetermined adjustment temperature of x° C.=38° C. can be obtained by the formula of 100 L×(50° C.−42° C.)=200 L×(42° C.−x° C.).

Then, the control device 22 confirms that the bath set temperature (here, 42° C.) and the bath set amount (here, 300 L) are reached (S8), and if the bath set temperature and the bath set amount are reached (S8 returns Yes). ), the electromagnetic valve 15 is closed, and the supply to the bath 17 is stopped (S9).

In this way, in the heating hot water filling operation, since hot water having a temperature higher than the set bath temperature is first filled, high-temperature hot water flows into the cold bath bottom and a large amount of steam can be generated. The temperature and humidity of the bath are increased, and then the opening of the filling mixer 12 is adjusted so that the filling of the bath set temperature and the set amount of bath is completed, and the supply to the bath 17 is continued. Can be completed, and the temperature in the bathroom can be raised to suppress heat shock due to temperature fluctuations in cold weather.

Further, when the bath hot water filling switch 25 is pressed, the heating hot water filling operation control means 29 judges whether the bathroom is cold and there is a risk of heat shock, and when there is a risk of heat shock, normal hot water filling is automatically performed. Since the operation is switched to heating and hot water filling operation, the user does not have to make the setting every day, and even if he forgets to open the lid, when the operation is completed, the bath temperature and the bath setting amount desired by the user are used. The tension can be done.

When the temperature is not lower than the predetermined temperature (S2 is No), the control device 22 opens the opening degree of the filling mixer valve 12 to the opening degree corresponding to the bath set temperature (S10), and opens the solenoid valve 15, The filling operation is started (S11). After that, it is confirmed that the bath set temperature and the bath set amount have been reached (S12), the electromagnetic valve 15 is closed, and the supply to the bath 17 is stopped (S13).

In this way, when the controller 22 determines that the bathroom temperature is high and there is no danger of heat shock, the normal hot water filling operation can be started without performing unnecessary heating and hot water filling operation, so that the user bothers to do so. There is no need to switch the operation when checking the temperature of the bathroom, and it is possible to perform convenient water filling operation.

Then, when the hot water filling operation and the normal hot water filling operation are completed, the display unit 26 and the speaker 27 notify the user that the hot water filling operation has ended (S14).

Next, a second embodiment of the hot water filling will be described with reference to the flowchart of FIG.

When the bath water filling switch 25 is pressed (S15), the control device 22 confirms whether the bathroom temperature detected by the bathroom temperature sensor 28 provided in the remote controller 24 is lower than a predetermined temperature (here, 15° C. or lower) (S16). ).

If the temperature is equal to or lower than the predetermined temperature (Yes in S16), the heating and hot water filling operation control unit 29 determines that the bathroom is cold and there is a risk of heat shock, and switches the normal hot water filling operation to the heating and hot water filling operation. First, the heating and hot water filling operation control means 29 notifies the user to open the bath lid on the display unit 26 and the speaker 27 of the remote controller 24 (S17), and sets the hot water filling valve 12 to the set temperature (here, 42° C.). ) Is higher than the above), the opening is opened so as to reach a predetermined heating temperature (here, 50° C.) that can generate a large amount of steam in the bathroom (S18), the solenoid valve 15 is opened, and heating is performed. Water filling is started (S19). After that, when the second predetermined amount (here, 75 L) is reached from the start of heating and hot water filling (S20), a third predetermined amount (here, 75 L, cumulative water filling amount is 150 L) after the second predetermined amount of hot water is filled. Until the temperature reaches the bath set temperature, the opening is opened so that the bath filling temperature becomes a predetermined adjusted temperature (here, 34° C.) lower than the bath set temperature, and supply is performed at the predetermined adjusted temperature. Continue (S21).

Here, we will explain the method for calculating the prescribed adjustment temperature. The second place, which is the timing of switching the bath setting temperature to 42°C, the bath setting amount to 300L, the predetermined heating temperature to generate steam at least in the bathroom to 50°C, and the water filling temperature, which is predetermined arbitrarily. When the fixed amount and 75L from the second predetermined amount of water filling to the third predetermined amount are respectively set, hot water is supplied between the second predetermined amount of water filling and the third predetermined amount according to the following calculation formula. X° C., which is a predetermined adjustment temperature for achieving the set temperature, is calculated. The predetermined adjustment temperature of x° C.=34° C. can be obtained by the formula of 75 L×(50° C.−42° C.)=75 L×(42° C.−x° C.).

Then, when the third predetermined amount is reached (S22), the supply of water is continued with the opening degree of the filling mixer valve 12 set to the opening degree corresponding to the arbitrarily set bath temperature (S23).

Then, the controller 22 confirms that the bath set temperature (here, 42° C.) and the bath set amount (here, 300 L) are reached (S24), and if the bath set temperature and the bath set amount are reached (S24 returns Yes). ), the solenoid valve 15 is closed, and the supply to the bath 17 is stopped (S25).

As described above, in the heating hot water filling operation, since hot water having a temperature higher than the bath set temperature is first filled, high-temperature hot water flows into the cold bath bottom, and a large amount of steam can be generated. The temperature and humidity of the bath are increased, and then the opening of the filling mixer 12 is adjusted so that the filling of the bath set temperature and the set amount of bath is completed, and the supply to the bath 17 is continued. Can be completed, the temperature in the bathroom can be raised to prevent heat shock due to temperature fluctuations in cold weather, and even if there is a user who wants to take a bath while filling water, the set temperature can be set early. Since hot water can be supplied, the risk of burns due to high temperatures can be suppressed.

Further, when the bath hot water filling switch 25 is pressed, the heating hot water filling operation control means 29 judges whether the bathroom is cold and there is a risk of heat shock, and when there is a risk of heat shock, normal hot water filling is automatically performed. Since the operation is switched to heating and hot water filling operation, the user does not have to make the setting every day, and even if he forgets to open the lid, when the operation is completed, the bath temperature and the bath setting amount desired by the user are used. The tension can be done.

When the temperature is not lower than the predetermined temperature (S16 is No), the control device 22 opens the opening degree of the filling mixer valve 12 to the opening degree corresponding to the bath set temperature (S26), opens the solenoid valve 15, and normally opens. The filling operation is started (S27). After that, it is confirmed that the bath set temperature and the bath set amount are reached (S28), the electromagnetic valve 15 is closed, and the supply to the bath 17 is stopped (S29).

In this way, when the controller 22 determines that the bathroom temperature is high and there is no danger of heat shock, the normal hot water filling operation can be started without performing unnecessary heating and hot water filling operation, so that the user bothers to do so. There is no need to switch the operation when checking the temperature of the bathroom, and it is possible to perform convenient water filling operation.

When the heating hot water filling operation and the normal hot water filling operation are completed, the display unit 26 and the speaker 27 notify the user that the hot water filling operation has ended (S30).

Further, the alerting at the end of the heating hot water filling operation will be described based on the flowchart of FIG.

When the heating hot water filling operation is completed (S31), the heating hot water filling operation control unit 29 determines whether the temperature change in the bathroom at the start of the heating hot water filling and at the end of the hot water filling operation is less than a predetermined rise temperature (here, 5° C.). When it is confirmed (S32) and the temperature is lower than the predetermined temperature rise (Yes in S32), it is considered that the temperature of the bathroom is not sufficiently raised because the user forgets to open the lid of the bathtub at the start of the filling of water. Therefore, it is determined that the user is in danger of heat shock, the user is alerted and the fact that the water filling is completed is notified (S33).

Further, when the temperature is equal to or higher than the predetermined temperature rise (No in S32), it is determined that the temperature of the bathroom rises and that the user can safely take a bath, and only the completion of the water filling is notified (S34).

In this way, even if the bath temperature is not raised due to the fact that the lid of the bathtub 17 is not opened even though the heating and filling operation is performed, the user is alerted and the completion of filling is notified. By doing so, heat shock can be reliably prevented.

It should be noted that the present invention is not limited to the first and second embodiments, and does not prevent modification without departing from the scope of the invention. For example, this time, a heat pump hot water storage and hot water supply device has been described. Alternatively, the hot water storage tank 1 may be provided with a heater. In the present invention, the bathroom temperature sensor 28 provided on the remote controller 24 is used to check the condition of the bathroom. However, the outdoor unit equipped with the heat pump type heating means 3 detects the outside air temperature, and the detected temperature is low, which may cause a heat shock. If there is, it is possible to switch between normal hot water filling and heating hot water filling.

Further, the first predetermined amount of the first embodiment refers to the bath set amount 300L, and the first predetermined amount is ⅓ of the bath set amount, and the second predetermined amount of the second embodiment is set. For the predetermined amount and the third predetermined amount, referring to the bath setting amount 300L, ¼ of the bath setting amount is filled with the second predetermined amount, and ½ of the bath setting amount is filled with the third filling amount. Although the predetermined amount is set, the value of the predetermined amount may be changed as appropriate without changing the gist.

Further, in the present embodiment, the filling temperature calculated in the filling water flow sensor 14 such as the first predetermined amount, the second predetermined amount, and the third predetermined amount is used to switch the filling temperature of the heating filling operation. Although the predetermined amount to be performed is counted, the same effect can be obtained even if the predetermined amount is counted during the elapsed time after the start of the filling and the filling flow sensor 14 is turned on. Further, the predetermined amount, the predetermined temperature, the predetermined heating temperature, and the predetermined adjusted temperature may be appropriately changed within a range not changing the gist according to the bath setting amount and the bath setting temperature arbitrarily changed by the user.

1 Hot Water Storage Tank 2 Water Supply Pipe 4 Hot Water Pipe 12 Hot Water Filling Mixer Valve 13 Hot Water Filling Tube 14 Hot Water Filling Flow Sensor 17 Bathtub 22 Control Device 23 Temperature Changing Means 24 Remote Controller 26 Display 27 Speaker 28 Bathroom Temperature Sensor 29 Heating Hot Water Operation Controlling Means

Claims (4)

An operation unit capable of appropriately changing the hot water supply set temperature, the bath set temperature, and the bath set amount that is the set amount of the hot water by the user's operation, and the contents set by the operation unit are confirmed and the user is prompted to perform a predetermined operation. A bath provided with a display unit for informing the user, a remote controller having a speaker for reporting the completion of the filling of water and a speaker for prompting the user to perform a predetermined operation, and a control device for controlling the operation of filling the water in the bathtub. In the water heater,
When the outside air temperature or the bathroom temperature is low at the start of the normal hot water filling operation, the control device includes heating hot water filling operation control means for switching the normal hot water filling operation to the heating hot water filling operation and controlling the heating hot water filling operation. Provided,
The heating and hot water filling operation control means, at the start of the heating and hot water filling operation, notifies the display unit and the speaker of urging that the lid of the bathtub is opened, and sets the hot water filling temperature to an arbitrarily set bath. A bath water heater characterized in that a hot water supply is started at a predetermined heating temperature higher than the temperature . When the heating hot water filling operation control means starts the heating hot water filling operation and supplies a first predetermined amount of hot water, the heating hot water filling operation control means causes the heating hot water filling operation control means to arbitrarily set a bath setting amount or a bath setting water level. At that time, the water filling temperature is adjusted so that the hot water in the bathtub reaches the bath setting temperature, and the supply is continued. When the bath setting amount or the bath setting water level is reached, the supply is stopped and the heating filling operation ends. The bath water heater according to claim 1, wherein When the heating hot water filling operation control means starts the heating hot water filling operation and reaches a second predetermined amount, the heating hot water filling operation control means determines that the hot water in the bathtub is the bath when the third predetermined amount is reached. In order to reach the set temperature, keep the filling temperature at a predetermined adjusted temperature that is lower than at least the arbitrarily set bath setting temperature, and continue supplying when the third predetermined amount is reached. 2. The bath water heater according to claim 1, wherein when the set amount of bath or the set water level of the bath is reached, the supply is stopped and the hot water filling operation is ended. The heating hot water filling operation control means confirms whether the temperature rise of the bathroom due to the heating hot water filling operation is equal to or higher than a predetermined rising temperature, and when the heating hot water filling operation is completed, if the temperature is lower than the predetermined rising temperature, there is a risk of heat shock. The bath water heater according to any one of claims 2 and 3, characterized in that a warning is issued to that effect.

Images