JP2595014B2 - Semi-automatic water heater with reheating function of bathtub - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a semi-automatic water heater with a bath tub reheating function capable of performing hot water filling control using a dry battery (or a storage battery or the like) as a power supply.

[Conventional technology]

As shown in FIG. 3, for example, a conventional household bath kettle having a reheating function is provided with a heat exchanger for hot water supply and a burner thereof, and a heat exchanger for reheating and a burner thereof in an apparatus a. Hot water heated by a hot water supply heat exchanger is supplied from a hot water tap b or a shower c, and hot water in a bath tub connected through a pair of hot water circulation ports d by a reheating heat exchanger. Is configured to be heated. This example is of a balanced flow type.

[Problems to be solved by the invention]

As described above, a bath kettle having a conventional hot water supply / reheating function requires two heat exchangers for hot water supply and reheating and a burner thereof in the appliance as described above. For this reason, in the case of a small bathroom, there is a problem that the size of the bathtub is limited.

Also, the appliance has a pair of hot water circulation ports d connected to the reheating heat exchanger, each of which must be connected to the circulation port on the bathtub side, so that the appliance and the bathtub are connected. There is a problem that it is necessary to align and mount, and the work is considerably troublesome. In addition, when the above-mentioned bath kettle uses a heat exchanger for reheating, it is necessary to stir in the bath tub in order to average the hot water temperature in the bath tub,
Furthermore, if the outside air temperature drops when the reheating heat exchanger is not used, the bathtub water is cooled via the reheating heat exchanger, especially in the case of a balanced flu type, and the bathtub water temperature drops rapidly. There is a problem of doing.

Furthermore, apart from expensive bathtubs equipped with various automatic devices controlled by an AC power supply, bathtubs that have been used in ordinary households in the past, control of the desired water volume and desired water temperature is performed by monitoring the user. There is no household bath kettle that can automatically control the amount of hot water and the temperature of hot water using a dry battery or the like as a power source.

The present invention solves the above-mentioned problems of the prior art, and
An appliance having a base heat exchanger, capable of supplying hot water and reheating, is extremely simple to install, and uses a power source such as a dry cell (or storage battery) to supply a desired amount of water and water. It is an object of the present invention to provide a semi-automatic water heater having a function of reheating a bath tub capable of performing hot water filling.

[Means for solving the problem]

In order to achieve the above object, the present invention provides a heat exchanger including a burner and a hot water pipe having a hot water supply pipe and a water flow control orifice. The water supply side is connected to the water supply side, and the water supply side pipe is provided with an electric water stop valve and a manually adjustable fixed water stop valve. At the same time, a manual water shutoff valve is disposed in the high-temperature water side pipe, and further, a hot water tap and a hot water tap via a switching valve upstream of the electric water shutoff valve and the manually adjustable fixed water shutoff valve of the hot water supply side pipe. A shower is connected, the bathtub hopper is connected via a pipe to a tapping pipe arranged at the bottom of the bathtub, and the supply of gas to the burner is controlled by a self-suction type solenoid valve, a water pressure automatic gas valve, and a water temperature detection type. Done through gas governor , Characterized in that the ignition of the electric water shut-off valve and self-suction type solenoid valve and the burner of the hot water supply-side pipe line were without to control the operation panel to make such batteries and power supply.

Further, the present invention is such that a water supply pipe is connected in the middle of the hot water supply side pipe through a manual thermo mixing valve, and the temperature of hot water discharged from the hot water supply side pipe is kept constant by the thermo mixing valve. It is characterized by.

Furthermore, the present invention uses a 24-hour operation panel with a timer, and when the set time of the timer is reached, opens the electric water shutoff valve of the hot water supply line and burns the burner to set it in the bathtub via the hopper. Hot water,
When the amount of hot water reaches the set value of the fixed water stop valve, the fixed water stop valve is automatically closed to perform automatic hot water filling at the set temperature and the set amount.

[Action]

Since the bathtub water heater of the present invention is configured as described above, water is supplied by operating the operation panel with the manual water shutoff valve on the high-temperature water side pipeline, the hot water tap, and the switching valve on the shower side closed. Then, the solenoid valve is opened to burn the burner, and the hot water heated by the heat exchanger is controlled to a constant temperature by the thermo-mixing valve, and passes through the electric water shutoff valve and the fixed water shutoff valve via the bath hopper. When the supply amount reaches the set value of the fixed water stop valve, the fixed water stop valve is automatically closed, and the bath is filled with the set amount at a predetermined temperature in the bath tub. And at this time, the hot water supplied into the bathtub is automatically stirred by the water head pressure based on the level difference between the water surface of the hopper and the water surface of the bathtub, so that the hot water in the bathtub need not be manually stirred. The temperature of the hot water in the bathtub is almost equalized.

Further, if the operation panel is provided with a 24-hour timer and the operation is automatically started when the set time comes, the set hot water temperature and the set hot water amount are automatically filled in the same manner as described above. Do.

Also, when the hot water tap and shower switching valve and the electric water shutoff valve on the hot water supply side pipe are closed and the manual water shutoff valve on the high temperature water side pipe is opened to burn the burner, the flow rate is limited by the water flow control orifice. For example, 85 ° C or higher, 3 ~
5 / min high-temperature water is supplied from the bottom of the bathtub into the bathtub through the hopper, whereby the hot water in the bathtub is stirred and heated to perform the function of reheating.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. In this embodiment, the operation panel is
Although a timer with a time timer was used, and the bathroom was preheated by spraying warm water from the shower to the floor of the bathroom by operating the remote controller, the present invention is not limited to such an embodiment. It is not intended to be limited to.

FIG. 1 is an overall configuration diagram showing a gas-water system of a water heater for a bathtub according to the present invention, and FIG. 2 is a diagram showing an example of the appearance of an appliance.

In FIG. 2, reference numeral 1 denotes an operating portion of a shower / hot-water tap switching valve, 2 denotes a hot water outlet temperature adjusting portion, 3 denotes a switching portion between reheating and hot water supply, 4 denotes a water supply port, and 5 denotes a hot water supply amount adjusting portion into a bathtub. ,
6 is an input capacity switching unit, 7 is a connection port to the bathtub, 8 is a back guard of the hopper, the internal mechanism of which is the first
It is configured as shown in the figure. That is, in FIG. 1, reference numeral 12 denotes a heat exchanger, and 13 denotes a burner. When the diaphragm case 11 detects flowing water, the hydraulic pressure automatic gas valve 14 is opened, and a water temperature detection type gas governor 15 is provided. It is configured to supply gas. The water temperature detection type gas governor is described in, for example, Japanese Patent Application Laid-Open No. 1-126482.
A spring seat which is installed in a water supply circuit and detects a water temperature to expand and contract the push rod, and moves in response to the expansion and contraction of the push rod of the heat detector. A water temperature responsive spring is interposed between the spring and the valve body of the spring loaded gas governor, and the gas flow rate is controlled by the cooperation of the spring of the spring loaded gas governor and the water temperature responsive spring. Further, the water temperature detection type gas governor of the illustrated embodiment directly gently ignites the igniter 16 with the gas supply amount to the burner 13 being reduced,
Thereafter, when ignition is detected by the frame rod 17, the spring pressure is returned to a normal value so that normal combustion can be started (Japanese Patent Laid-Open No. Hei 1-208615, "Direct Slow Ignition Apparatus in Water Heaters, etc."). reference). 18 is a self-suction type solenoid valve, that is, when an operation command is given by an operation panel, a current of, for example, 300 to 500 mA is supplied to the coil 18a to open the valve body 18b, and thereafter, the current supplied to the coil is reduced, or a thermocouple is applied. (Not shown)
Is supplied to the coil to maintain the valve open state. Reference numeral 19 denotes a capability switching device that is switched by the capability switching unit 6.

The tapping pipe of the heat exchanger 12 has a hot water supply side pipe 20 and a high temperature water side pipe 21
The hot water supply side pipe 20 is mixed with a water supply path 22 via the diaphragm case 11 and a thermomixing valve 23, and then mixed with the high temperature water side pipe 2 through a pipe 20a.
It merges with 1 and the merging conduit 24 is viewed through the bathtub hopper 25.

The pipe 20a is provided with an electric water stop valve 26 and a fixed water stop valve 27 which can be manually adjusted, and a water flow control orifice 28 is provided on the high temperature water side pipe 21. For example, a high-temperature water of 85 ° C. or more and 3 to 5 / min can be obtained, and a manual water shutoff valve is provided in the pipeline.
29 are arranged. The fixed-quantity water stop valve 27 is automatically stopped when a flow rate according to the set value flows, and is controlled by the control unit 5 shown in FIG. Further, the manual water shutoff valve 29 of the high temperature water side pipe line 21 is switched by the reheating and hot water supply switching unit 3 shown in FIG.

The hot water supply pipe 20a is connected to a shower / hot water supply switching valve 30 by a pipe 20b on the upstream side of the electric water shutoff valve 26.
By operating the switching unit 1 shown in FIG. 2, hot water can be supplied from the hot water tap 31 or the shower 32, or both the hot water tap 31 and the shower 32 can be closed. That is, in the illustrated example, the hot water tap 31 side is opened and the shower 32 side is closed, but when the cam is rotated by 90 ° from this, both hot water ports are closed, and
When rotated by 90 °, the hot water tap 31 is closed and the shower 32 is opened.

Reference numeral 33 denotes an auxiliary device for bathroom heating supplied as an option, which is provided with a conduit 20c in parallel with the conduit 20b to connect the conduit 20a to the branch room on the shower side, and the conduit 2
Electric water stop valve operated by remote control 35 in the middle of 0c
34 are arranged.

Hot water or high-temperature water supplied to the hopper 25
25a connects to the connection port 7 of the appliance, and from the connection port 7 is connected to a tapping pipe 37 arranged near the bottom of the bathtub 36.
In addition, many small holes are drilled in this tapping pipe 37,
Hot water or hot water is supplied into the bathtub through the small holes.

The self-sucking solenoid valve 18 uses only a small amount of electric power when the valve is kept open, and the electric water shutoff valve 26 (and 34 when using 33) has a low torque.
Open and close by a low-power gearmotor. When the above-mentioned mild ignition mechanism is adopted as the water temperature detection type gas governor 15, a gear motor similar to the above-mentioned electric water shutoff valve is used for rotating the cam, and these are operated by the operation panel.
It is configured to automatically control by 38.

The operation panel 38 of this embodiment has a 24-hour timer, and includes a time display window 38a and a time setting dial 38b.
A main switch 38c, a hot water switch 38d, a reheating switch 38e, and an indicator lamp 38f, and after turning on the main switch 38c, turning on the hot water switch 38d opens the electric water shutoff valve 26. When the water supply switch 39 detects the water supply, the self-suction type electromagnetic valve 18 is opened according to a command from the operation panel 38, and the igniter 16 causes a spark discharge to ignite the burner. The remote control 35 for heating the bathroom is equipped with a main switch 35a.
, A preheat switch 35b and an indicator lamp 35c.

Since the water heater of the present invention is configured as described above,
It can be used as described below.

(1) Dropping of bathtub when timer is not used First, thermo mixing valve by hot water temperature controller 2
23 is adjusted so as to obtain a desired temperature, and the hot water amount adjusting unit 5 is adjusted to set the amount of water dropped by the fixed quantity water stop valve 27. At this time, the shutoff valve 29 on the high-temperature water side and the switching valve 30 on the hot-water tap (shower) side are closed. When the water filling switch 38d of the operation panel 38 is turned on in this state,
The electric water stop valve 26 is opened to start water supply, and when the water supply switch 39 is turned on by the water supply, the electromagnetic valve 18 is opened and the igniter 16 discharges to ignite the burner 13. At this time, when the ignition is confirmed by the frame rod 17 in the case of having the slow ignition mechanism as in the illustrated embodiment, the cam is rotated by the gear motor to return the governor spring pressure to the normal combustion state. Thus the water supply is heat exchanger 12
After being heated by the mixing valve 23 and adjusted to the set temperature by the mixing valve 23, the hot water supplied to the hopper 25 via the pipelines 20a and 24 is supplied to the hopper 25.
When the amount of water dropped into the bathtub reaches the set amount of the fixed amount water stop valve 27, the fixed amount water stop valve
27 closes, the water switch 39 opens and the burner 13 extinguishes automatically.

(2) Automatic drop into bathtub by timer setting In the same manner as in (1), hot water temperature setting by thermo mixing valve and drop amount setting by fixed water stop valve are performed, and time setting dial 38b of operation panel 38 Set the drop start time. Thereafter, if the main switch 38c of the operation panel 38 is turned on, at the set time, the hot water is set at the set hot water temperature and the set water amount through the same process as (1), and then the fire is automatically extinguished.

(3) Reheating The manual water shutoff valve 29 is opened (the electric water shutoff valve 26 is kept closed), the hot water supply (shower) switching valve 30 is closed, and the reheating switch 38e of the operation panel 38 is turned on. I do.

Then, the burner 13 burns in the same manner as described above, and the high-temperature water heated by the heat exchanger 12 flows only into the high-temperature water-side pipe 21 side, and the water amount is adjusted by the water amount control orifice 28, for example, 85 ° C. or more. The high-temperature water of 3 to 5 / min is supplied to the hopper 25, and is spouted from the tapping pipe 37 into the bathtub at a relatively low speed due to the level difference between the water surface in the bathtub 36 and the water surface in the hopper. The bathtub water is heated with water and convectively stirred to equalize the bathtub temperature. When the temperature of the hot water in the bathtub becomes appropriate, the operation panel 38 is operated again to extinguish the fire.

(4) When using a hot water tap / shower After setting the hot water temperature using the thermo mixing valve as in (1) above, close the manual water shutoff valve 29 (while the electric water shutoff valve 26 is closed). A), when the switching valve 30 is switched to the hot water side or the shower side,
The hot water heated by the heat exchanger 12 is discharged from the hot water supply pipe 20 through the thermomixing valve 23 and the pipe 20b. When the switching valve 30 is closed, the fire is automatically extinguished when the running water switch is turned off.

(5) When heating the bathtub Close the manual water shutoff valve 29 and the switching valve 30 (while the electric water shutoff valve 26 is closed) and operate the remote controller 35 to open the electric water shutoff valve 34. I do. Then, the burner 13 is burned by the flowing water in the same manner as described above, and the high-temperature water heated by the heat exchanger 12 flows directly into the shower branch chamber of the switching valve 30 via the thermo-mixing valve 23 and the pipe 20c, and the shower Water is directly sprayed from 32 onto the bathroom floor 40 to heat the bathroom.

[Effects of the Invention] As described above, according to the present invention, a set hot water temperature and a set water amount can be set for a bathtub by a relatively simple device using a dry battery or the like as a power source without using an expensive automatic control device. In this case, if the operation panel with a 24-hour timer is used, the set hot water temperature and set water amount can be automatically dropped at the set time, In addition, the hot water in the bathtub can be reheated by a simple operation.

In addition, in the present invention, hot water filling and reheating in the bathtub can be performed by one heat exchanger, so that the appliance can be thinned accordingly and the bathroom can be widely used, and the appliance and the bathtub can be used. Since it is not necessary to perform the alignment, it can be easily and easily installed.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of a gas-water system showing an embodiment of the present invention, FIG. 2 is a diagram showing an example of the appearance of a device, and FIG. 3 is an external view showing an example of a conventional device. . 11… diaphragm case, 12… heat exchanger, 13… burner, 14… water pressure automatic gas valve, 15 …… water temperature detection type gas governor, 16 …… igniter, 17 …… frame rod, 18…
… Self suction type solenoid valve, 20,20a, 20b, 20c …… Hot water supply line,
21 ... high temperature water side line, 23 ... thermo mixing valve,
24… Confluence line, 25… Hopper, 26… Electric water shutoff valve, 27… Manual adjustment type fixed water shutoff valve, 28… Water flow control orifice, 29… Manual water shutoff valve, 30… Hot water supply (Shower) switching valve, 31 ... hot water tap, 32 ... shower,
33 …… Auxiliary equipment for heating, 34 …… Electric water shutoff valve, 35 ……
Remote control, 36 ... bathtub, 37 ... tapping pipe in bathtub, 38 ... operation panel, 39 ... running water switch, 40 ... bathroom floor.

Claims (4)

(57) [Claims] 1. A heat exchanger including a burner as one unit, and
A tapping pipe via the heat exchanger is branched into a hot water supply pipe and a high-temperature water pipe having a water volume control orifice, and the downstream of both pipes is connected to a merging pipe to supply hot water or hot water to the bathtub. In addition, an electric water shutoff valve and a manually adjustable fixed-quantity water shutoff valve are installed in the hot water supply side pipe in the previous term, and a manual water shutoff valve is installed in the high temperature water side pipe in the previous term. Further, a hot water tap and a shower are connected via a switching valve upstream of the electric water shutoff valve and the manual joint type fixed quantity water shutoff valve of the hot water supply side pipe, and the bathtub hopper is connected to the bottom of the bathtub through a pipe. Connected to the tap water pipe arranged in
On the other hand, the supply of gas to the burner is performed via a self-suction type solenoid valve, a water pressure automatic gas valve, and a water temperature detection type gas governor, and the electric water shutoff valve, the self-suction type solenoid valve and the ignition of the burner of the hot water supply side line are turned on. A semi-automatic water heater with a bath tub reheating function characterized by being controlled from an operation panel powered by dry batteries. 2. A water supply pipe is connected in the middle of a hot water supply pipe via a manual thermo-mixing valve, and water supplied from the water supply pipe and hot water passed through a heat exchanger are connected by the thermo-mixing valve. 2. The semi-automatic water heater with reheating function of a bathtub according to claim 1, wherein the hot water temperature is kept constant by mixing. 3. A pipe dedicated to a shower is provided in parallel with a pipe for supplying hot water to a hot water tap and a shower, and an electric water shutoff valve is provided in the pipe, and the electric water shutoff valve is controlled by a remote controller. The semi-automatic water heater with a reheating function of the bathtub according to claim 1, which is provided. 4. The operation panel has a 24-hour timer,
At the set time, the electric water shutoff valve of the hot water supply side pipe is opened, the burner is burned, hot water is supplied to the bathtub through the hopper at the set temperature, and when the amount of hot water reaches the set value of the fixed water shutoff valve, the fixed amount is determined. The semi-automatic water heater with a reheating function of a bathtub according to claim 1, wherein the water stop valve is closed to stop the hot water supply.