JPS62258952A - Temperature regulator for bath - Google Patents

Abstract

PURPOSE:To permit cooling quickly while avoiding overflow resulting from the supply of water by a method wherein the titled regulator is equipped with a hot-water temperature regulating means which controls the opening and closing of a water supplying valve as well as the operating and stopping of a compressor in accordance with a difference between hot-water temperature, detected by a hot-water temperature sensor, and a set hotwater temperature. CONSTITUTION:When a hot-water temperature detected by a hot-water temperature sensor 16 in a bathtub 3, is higher than a set temperature, a water supplying valve 13 is opened by a first hot-water temperature regulating means to cool it by supplying water and when the detected hot-water temperature has become lower than the set temperature within a set period of time, the water supplying valve 13 is closed and cooling is finished. when the hot-water temperature can not be cooled to a temperature lower than the set temperature after a predetermined period of time has elapsed, the water supplying valve 13 is stopped by a second hot-water temperature regulating means and a compressor 23 is operated until it becomes lower than the set temperature to act a heat exchanger 8 for bathtub as an evaporator and cool the hot-water in the bathtub 3. The hot-water is cooled by supplying water at first and when it can not be cooled after the set period of time has elapsed, cooling by supplying water is stopped and the hot-water is cooled by employing the heat exchanger 8 for bathtub in such a manner, therefore, overflow may be avoided surely.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention cools the hot water in the bathtub by using a heat pump stem when the hot water in the bathtub is high temperature, and reduces the temperature of the hot water in the bathtub. The present invention relates to a bath water temperature control device that adjusts bath water to an appropriate temperature.

(Prior art) When hot water in a bathtub is cooled at a high lr and 1□, conventionally,
It is cooled by water supply. However, when the water supply temperature is high, a large amount of water is supplied to cool the bathtub to an appropriate temperature, resulting in a so-called overflow (l-) in which water overflows from the bathtub.

Therefore, a technology was developed that uses a heat bomb system to cool the hot water in the bathtub instead of using water supply.

As this technique, the one described in Japanese Patent Application Laid-Open No. 130-82755 is known. FIG. 5 is an HL diagram that does not show the above-mentioned conventional example. In this figure, 101 is a compression (11, 102 is a bathtub heat exchanger, 103 is an outdoor heat exchanger, 105 is a hot water storage 106 that accommodates the bathtub heat exchanger 102 is a bathtub, 107 is a hot water temperature controller, !
08 is a city water delivery pipe. PO is a pump that circulates the heat inside the bathtub 10G to the bathtub heat exchanger 102.

xO is a valve switching mechanism, YO is an expansion mechanism, AO is outdoor, knit.

With these configurations, when hot water in the bathtub 106 is heated or reheated, the refrigerant from the compressor 101 is passed from the bathtub heat exchanger 102 to the outdoor heat exchanger 103 via the expansion Ja structure YO, and the compressor 101, and due to the circulating flow, the amount of heat absorbed by the outdoor heat exchanger 103 is radiated by the bathtub heat exchanger 102, and the hot water in the bathtub 106 is heated.

Then, using this bathtub heat exchanger 102, the valve switching mechanism
By switching O, the refrigerant from the compressor lot flows 4° from the outdoor heat exchanger +03 to the bathtub heat exchanger 102 via the expansion mechanism YO, and vice versa.
1, and due to its circulating flow, the amount of heat absorbed by the bathtub heat exchanger +02 is transferred to the outdoor heat exchanger 103, and the heat is transferred to the bathtub 10.
The hot water inside 6 is cooled down.

(Problems to be Solved by the Invention) However, in the case of the conventional example in which such a configuration is If the temperature was too high after entering the room, there was a problem where you would have to wait naked for a relatively long time until the temperature reached the appropriate temperature.

The present invention was developed in view of the above circumstances, and is designed to quickly and economically cool the hot water in the bathtub while avoiding overflow caused by water supply. (Means for Solving the Problems) In order to achieve this purpose, the bath water temperature regulating device of the present invention includes: a bathtub heat exchanger (8); and a heat release device. The bathtub heat exchanger (8) is evaporated across the heat exchanger (22, 18, 26), this heat release heat exchanger (22, 18, 26), and the bathtub heat exchanger (8). In order to act as a heat exchanger (2),
2, 18, 26) which circulates and flows the refrigerant so that it acts as a condenser.
), open and close the water supply valve (1) to supply water to the bathtub (3).
3), and a water temperature sensor (16) that detects the water temperature in the bathtub (3).
1. When the hot water temperature detected by the hot water temperature sensor (16) is higher than the set temperature, the water supply valve (13) is opened by 5 times, and when the detected hot water temperature falls below the set temperature, Water supply valve (
13), and when the detected hot water temperature does not fall below the set temperature even after the opening time of the water supply valve (13) by the first hot water temperature adjusting means or the set time elapses; , the water supply valve (13) is closed and the compressor (2
3) and a second hot water ljL adjusting means that operates and stops the compressor (23) when the detected hot water temperature becomes equal to or lower than the set temperature.

(Function) According to this configuration, when the water temperature in the bathtub (3) is high, the first j! The water supply valve (13) is controlled by the temperature control means.
4. Open and cool in a water jug within the set time.・When the temperature falls below the set temperature, close the water supply valve (I3) and finish cooling. If the water cannot be cooled to below the set temperature even after the set time has elapsed, the second hot water temperature adjustment means
Stop the water supply valve (13) and set the detected water temperature.
The compressor (23) is operated until the temperature drops below 30°C, and the bathtub heat exchanger (8) acts as an evaporator to cool the hot water in the bathtub (3). .

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings. FIG. 1 is a system configuration diagram of a bath water temperature regulating device according to an embodiment of the present invention. In this figure, l is an outdoor unit as a heat source side unit, and 2 is an initial easy-to-use unit that supplies water and hot water into the bathtub 3 at a predetermined ratio and pours a set amount of hot water at a set temperature into the bathtub 3. 4 is a heat pump type bathtub unit for maintaining the hot water in the bath tfla at the setting m'IEh after the beam control is completed; 4 is a bathroom heating unit for heating the bathroom 5, drying washrooms, etc.; 6;
7 is an indoor unit that performs indoor heating, cooling, and air conditioning.
is a hot water tank unit.

The bathtub unit 2 includes a heat pump type bathtub heat exchanger 8, a circulation pump 10 that circulates hot water in the bathtub 3 to the bathtub heat exchanger 8 through a circulation vibrator 9, and a circulation pump 10 that circulates hot water from the hot water storage tank unit 7 to the bathtub heat exchanger 8. A hot water pipe 12 that supplies hot water via the hot water supply valve 11, a water supply pipe 14 that supplies city water via the water supply valve 13, and mixing that mixes hot water and water from the hot water pipe 12 and the water supply pipe 14, respectively. A water tank 15 is provided.

Further, a hot water temperature sensor 16 is provided on the suction side of the circulation vibrator 9 relative to the circulation pump IO.

It is located on the inner wall of the mixing tank 15 at a point corresponding to H1 above the circulation vibrator 9 or at a level communicating with the bathtub 3.
Operation permissible water level sensor detects water level 0 which allows operation of circulation pump IO. and set water level sensors L1.Ly, Ls for detecting the set water level HI (, HM, lII) in three stages are attached at predetermined intervals in the vertical direction near the point corresponding to the level during normal bathing. Each of these water level sensors Lo, Ll, I, and t+L3 is composed of a positive characteristic thermistor.

The hot water storage tank unit 7 includes a hot water storage tank 17, a hot water storage tank heat exchanger 18, and a valve that opens to supply water when the water level in the hot water storage tank 17 rises or falls to a set water level, and closes when the water level reaches the set water level. Zuro ball tap 19 that automatically stops water supply and Zuro hot water pump 2 that supplies water from the hot water storage tank 17! are provided.

As shown in the refrigerant circuit diagram of FIG. 2, the serious crime outdoor unit l is equipped with an outdoor heat exchanger 22 as a heat exchanger for releasing heat,
Outdoor fan 22a, compressor 23 that circulates and flows refrigerant, liquid receiver 24, accumulators 25, 25, first and second
Four-way switching valve SV,,SV3, first to fourth electric expansion valve EV,,EV,,EV,,EV3,first and second
Liquid shut-off valves V,, V,, first and second gas shut-off valves V
3. A check valve V is provided.

Each of the indoor units 6.6 is equipped with an indoor heat exchanger 26 and an indoor fan 27.

The bathroom heating unit 4 also includes a bathroom heating heat exchanger 2.
8 and a blower fan 29.

In FIG. 1, 30 is a ventilation fan for ventilating the inside of the bathroom 5.

The first and second four-way switching valves s v , s v ,
, and the first to 47th IX dynamic expansion valves! ”：V
,, E Vl, E V 2. Each of the E V 3 is configured to automatically control its operation by a control means, and by controlling the operation as shown in the following table, it can be set to hot water supply operation mode, heating operation mode, reheating/drying (bath heating) operation mode, and cooling operation mode. Operation mode, hot water supply and heating in a state where the cooling exhaust heat can be used (supply, easy cooling), operation mode that recovers the remaining pigeon exhaust heat and recovers the heat of the hot water in the bathtub 3 for cooling and recovers it. An operation mode that performs hot water supply heating in a state where the generated heat can be used for fil (hot water supply + bath exhaust heat recovery), an operation mode that performs heating and reheating/drying in parallel (heating 10 baths intensely), and an operation mode for cooling. There is an operation mode in which heat recovery from the hot water in the bathtub 3 and cooling are performed in parallel (cooling 10-bath exhaust recovery), and an operation mode in which heat recovery from the hot water in the bathtub 3 is performed for recovering residual exhaust heat and cooling. In addition to supplying hot water and heating with the recovered heat available, cooling can be performed in parallel (hot water supply cooling + bath waste heat recovery) by selecting one of the operation modes. It has become.

(Hereinafter, blank space), 1- (Hot water supply + Bath waste heat recovery), (Cooling + Bath waste heat recovery), and (Hot water supply + Cooling + Bath waste heat recovery) In each operation mode, hot water supply heating and cooling are performed. When there is no electric expansion valve EVo, the third electric expansion valve EVo is fully opened and the heat of the hot water in the bathtub 3 is released to the outside air by the outdoor heat exchanger 22 for cooling only. , the reheating/drying operation mode, the cooling operation mode, and the above-mentioned operation mode in which only cooling is performed by releasing heat to the outside air.

■ When operating in reheating/drying mode: discharge port 23a of compressor 23 = first four-way switching valve SV, (solid line) - second four-way switching valve SV * (broken line) - first gas closing valve V, - Bathroom heating heat exchanger 28 -> bathtub heat exchanger 8 - 4th electric expansion valve E V 3 (1;'I) ) - 1st liquid closing valve v1
- Receiver 24 → No. ! Electric expansion valve EV.

(Sll) - Outdoor heat exchanger 22 - Second four-way switching valve S
V, (dashed line) - accumulator 25.25 - compressor 23
Forms a refrigerant flow path that circulates with the suction port 23b of 1--
rFfik693noPIi core 1k-Pm pump 9t
or by driving the continuous kite fan 29, the amount of heat absorbed from the outside by the outdoor heat exchanger 22 is transferred to the bathtub heat exchanger 8.
Either the hot water in the bathtub 3 is allowed to ripen, or the heat is radiated 11 into the bathroom 5 to reheat the bath, and the bathroom 5 is heated or the bathroom 5 is made to function as a drying room for washed items, etc. It looks like this.

■ During operation in cooling operation mode Discharge port 23a of compressor 23 → first four-way switching valve SV, (solid line) - second four-way switching valve 5Vt (solid line) - outdoor heat exchanger 22 → first electric expansion valve E VO (certain period degree) - Liquid receiver 24 - First liquid closing valve V1 - Second or third electric expansion valve E
V, (S II), EV tcs H) - indoor heat exchanger 26.26 = first gas closing valve V, - second four-way switching valve S V *, (solid line) - accumulator 25,254
A circulating refrigerant flow path is formed with the suction port 23b of the compressor 23, and the heat 1 absorbed from the room by the indoor heat exchanger 26, 26 is released to the outside by the outdoor heat exchanger 22, and the heat 1 is transferred to the outside by the outdoor heat exchanger 22. It is designed to provide cooling.

■During operation in cooling-only operation mode Discharge port 23a of pressure tank 1 machine 23 = first four-way switching valve SV, (
Solid line) - Second four-way switching valve 5V2 (solid line) - Outdoor heat exchange: S: S 22 - 1st electric expansion valve EV o (fully open)
-Liquid receiver 2/1-First liquid closing valve V, -4th TL dynamic expansion valve I ■3-・Bathtub heat exchanger 8-Bathroom heating heat exchanger 2
8-first gas shutoff valve V, -second four-way switching valve SV, (solid line) → Aki j14 regulator 25, 25 → suction 1 of compression tube 23
' + 23 b to form a refrigerant flow path that circulates, and the heat h1 absorbed from the hot water in the bathtub 3 by the bathtub heat exchanger 8.
is radiated to the outside by the outdoor heat exchanger 22, and the bath ←1
It is designed to cool the hot water within 1'/3.

FIG. 3 is an electrical circuit diagram of the water level sensor L. ,l+
, It, I, and s, as well as temperature signals from the hot water temperature sensor 16, to the bathtub CPU 31, and a water temperature setting switch that sets the temperature range of the hot water in the bathtub 3. The set water temperature signal from the bathtub unit 32, the set water level signal from the water level setting switch unit 33 for setting the amount of hot water in the bathtub 3, and the operation signal from the bath operation switch 34 are sent to the bath←h CPU 31 via the key matrix 35. The first relay coil 11 drives the circulation pump 10 based on these signals.
＋.

A drive signal is output to each of the second relay coil R2, which operates to open the hot water supply valve 11, and the third relay coil R3, which operates to open the water supply valve 13, and performs initial hot water filling by the hot water filling control means. When the initial filling is completed, a filling completion signal is output, and the pigeons are fed with a hit after the filling is completed. In addition, switching of the set water temperature by the hot water temperature setting switch section 32 is as follows.
This is done by operating the heating switch SW after changing the set water temperature.

The hot water filling completion signal from the bathtub CPU 31 is input to the outdoor side CPU 36 in the outdoor unit 1, and in response to the hot water filling completion signal, the hot water temperature setting temperature detected by the hot water temperature sensor 16 is changed by the heat retention control means. When it becomes lower than the range, the first and second four-way switching valves SV+, Sv, and the first to fourth electric expansion valves E V o, E V +,
EV2. Operation control for EV 3 and compressor 2
3 and the outdoor fan 22a, respectively, to perform heat exchange for the bathtub? :; 8 performs heating, maintains the water temperature detected by the hot water temperature sensor 16 within the set temperature range, and furthermore, by changing the set water temperature, etc., the water temperature in the bathtub 3 becomes lower than the set water temperature. When the water temperature rises, the first hot water temperature regulating means cools the water supply, and the second hot water temperature regulating means cools the water using the bathtub heat exchanger 8.

Next, the operations of the hot water level control means, the heat retention control means, and the first and second hot water temperature adjustment means will be explained using the flowchart shown in FIG. 4.

First, as shown in FIG. 4(a), turn on the operation switch 34 to start operation.
If both of 3 are opened (turned ON), the forget-to-cut prevention 11
Activate the utility timer. This forget-to-turn-off prevention timer is built into the bathtub CI"LJ3i, and for example,
It is set to the time, etc., and is reset after 6 hours have elapsed or when the operation switch 3/1 is turned off.

Next, the water level sensor L determines whether water has been supplied to a level HO that allows the circulation pump 10 to operate. It is determined whether or not a water level signal is detected, and the process waits until the water level reaches the above-mentioned allowable level 110 (S3).

After reaching the allowable level IO, the water level changes to the initially set water level (the water level 1-11-1, II M,
It is determined whether the water level has reached one of the water levels (HL) (S4).

Immediately after reaching the allowable level HO, the water level has not reached the set level (step S5 is executed 4 times and the circulation pump 1 is
Start driving by 0.

After this, in the processing from step S6 to step S13, horse beam control is performed, and the hot water temperature is higher than the set temperature range, the hot water temperature is within the set temperature range, and the hot water temperature is set at the set temperature. The hot water supply valve 11 and the water supply valve 13 are respectively opened and closed depending on the state where the temperature is lower than the temperature range, and an appropriate amount of hot water within the set temperature range is obtained.

That is, for the water supply valve 13, the setting temperature is 0.5 to
A differential is provided within a range of 1.5℃ lower, and when the hot water temperature rises by -1- to 0.5℃ lower than the set temperature, the water supply valve 13 is opened and the hot water temperature is lower than the set temperature 1y.
The water supply valve 13 is configured to close when the temperature drops below 1.5°C, and the hot water supply valve 11 is
From 0.5℃ higher than the set temperature to 1 higher than the set temperature
．． A differential is provided within the range of 0℃ lower than the set temperature, and when the hot water temperature drops to less than 1.0℃ lower than the set temperature, hot water supply valve +1 is opened, and the water temperature is 0.5℃ lower than the set temperature. The hot water supply valve 11 is configured to be closed when the temperature rises above a high temperature, and hot water of an appropriate temperature and an appropriate amount of m can be obtained while minimizing the frequency of opening and closing of the water supply valve 13 and the hot water supply valve 11.

To explain step by step, after the circulation pump 10 starts operating,
The temperature difference obtained by subtracting the hot water temperature set by the hot water temperature setting switch section 32 from the hot water temperature detected by the hot water temperature sensor 16 is -1,
Determine whether the temperature is lower than 5°C (S6), and if it is, close only the water supply valve 13 (Of"F) and then
7), Return to step S4.

If it is determined in step S6 that the temperature difference is greater than -1.5°C, the process proceeds to step S8 and it is determined whether the temperature difference obtained by subtracting the set hot water temperature from the detected hot water temperature is greater than 0°5°C. , when it is judged that the water temperature is high, the hot water valve is turned on! Close only l (OFFXS9
), the process returns to step S4.

When it is determined in step S8 that the temperature difference is smaller than 0.5°C, the process moves to step S10, where it is determined whether the temperature difference obtained by subtracting the set hot water temperature from the detected hot water temperature is larger than -0.5°C. If it is determined that it is large, the water supply valve 13 is opened (ON) and then (Sll), and the process returns to step S4.

When it is determined in the step SlO that the temperature difference is smaller than -0.5°C, the process moves to step S12, and the temperature difference obtained by subtracting the set hot water temperature from the detected hot water temperature is -1.0.
℃, and when it is determined that it is smaller, open the hot water supply valve 11 (ON) (S13),
Return to step S4.

Here, if it is determined that the temperature difference is greater than -1.0°C, the process returns to step S4.

In step S4, when it is determined that the water level has reached the set water level, it is assumed that hot water filling by the initial lagoon filling means has been completed, and the process proceeds to step S14.
And water valve! Close (turn OFF) all of Step 3, and then proceed to step SI5.

Through these processes from step S2 to step S14, a set amount of hot water is filled into the bathtub 3 within the set temperature range from 0.5°C higher than the set water temperature to 1.5°C lower. The initial hot water filling means is configured as a supply tank. At this time, a lagoon girding completion signal is output from the multiple bathtub CI U31 to the outdoor CI tJ 3 G.

In step S15, as shown in FIG. 4(b), it is determined whether the timer has timed up, that is, whether 6 hours have elapsed. Automatically cut (
OFF) state and bath operation It< +I・-J-7
, (Q l G 'If 16 hours have not elapsed, the process moves to step St7, and it is determined whether the water level is at the set water level in order to see whether the amount of hot water has decreased below the set water level due to the use of hot water for bathing. do.

If the water level reaches the set level, heat the bath by reheating or cool it by supplying water or using the bathtub heat exchanger 8.
It is determined whether a set time T minutes (for example, 15 minutes) has elapsed. Here, when heating or cooling is not performed, such as after initial hot water filling or after hot water replenishment, the determination is YES and the process moves to step S19, where the circulation pump IO is driven.

If it is determined in step S18 that the set time has not elapsed, the process proceeds to step S20, where it is determined whether the heating switch has been turned on, that is, whether there has been a change in the set water temperature, and whether the heating switch is turned on or not. If it is, the process moves to step S19, and if it is not turned on, the process returns to step S15.

After operating the circulation pump 10 in step S19, the setting and rule are set based on the lagoon temperature detected by the hot water temperature sensor 16.
J l? Reduce IA;'l: L 7 Two temperature difference -0,5
Determine whether it is smaller than ℃ L (S2+), the temperature difference is -0 ℃ 5℃, J: ri B If it is smaller, it is assumed that the hot water is warm and the temperature is low, and the bath heating is turned on. Immediately, the bathtub heat exchanger 3 The reheating operation is started (S22).

After that, j4J lH! The temperature difference obtained by subtracting the set temperature '/:jt from the hot water temperature detected by the t sensor 16 is 0.5°C.
523), wait until the temperature difference is 6 degrees greater than 0°5 degrees Celsius, and if it is 4 degrees greater, consider that reheating has ended and start heating the bath. 01"F, that is, the reheating operation by the bathtub heat exchanger 8 is stopped and the circulation pump 10 is set to Or;'F (S).
22), return to step S15.

Through these processes from step S21 to step S24, the heat retention control means is configured to perform reheating operation using the bathtub heat exchanger 8 and maintain the water temperature in the bath←n3 within the set temperature range. has been done.

1'+if Step 5 Step SI7 indicates that the water level is not at the set water level, that is, when it is determined that the amount of hot water has decreased from the set water level due to the use of hot water for bathing, the process returns to step S5 and the process described above is performed. Obtain the set amount of hot water within the set temperature range in the same manner as in the initial fortune-telling.

In step S21, if it is determined that the temperature difference obtained by subtracting the set hot water temperature from the detected hot water temperature by the hot water temperature sensor 16 is not smaller than 10.5 degrees Celsius, the process moves to step S25, and the process is shown in FIG. 4(C). As shown, pJ hot water temperature sensor 16
The temperature difference between the detected hot water temperature and the set hot water temperature is 1.5.
Determine whether it is larger than °C, and determine that it is larger than L
In other words, when you reset the water temperature to a lower temperature due to a mistake in changing the water temperature setting, or when you reset the water temperature to a lower temperature because you prefer lower temperature water, or even unexpectedly? If the JJ temperature is high, the process moves to step S26 and the water supply valve 13 is opened (ON) to cool the water jug.

Next, the process moves to step S27 and 1. Water temperature sensor 16
The temperature difference obtained by subtracting the set l hot water temperature from the detected hot water temperature is 0.
It is determined whether the temperature is lower than 5° C., and when it is determined that the temperature is lower than 5° C., the water supply valve 13 is closed in order to proceed to step S28 and finish cooling the water jug (01':'l;').
Then, stop the circulation pump IO L (OI” F )
, Step S15, II'i-0 Through the processes from Step S26 to Step 928, the first hot water temperature adjusting means is configured to cool the hot water in the bathtub 3 by 4 degrees by supplying water.

l! 'I 1: At step 5271, if it is determined that the temperature difference obtained by subtracting the set temperature control from the hot water temperature detected by the hot water temperature sensor 16 is larger than 05°C, step S
29, after the start of water pitcher cooling, it is determined whether the set time '1' (e.g. 3 minutes) has elapsed, and if the set time has not elapsed, the water pitcher continues to cool until the water temperature drops below the set temperature. Continue cooling.

After the start of water jug cooling, if the temperature of the hot water does not drop below the set temperature after the set time elapses, step S:; O
When the water jug cooling is finished, the water supply valve 13 is turned on.
Close (01;'F).

After that, in order to perform cooling using the heat pump system (abbreviated as heat-bon cooling), the refrigerant circuit is
In step S32, the compressor 23 is turned on (S31).
Cooling is continued until the temperature difference obtained by subtracting the set hot water temperature from the hot water temperature detected by the hot water temperature sensor 16 becomes smaller than 0.5° C. and it is determined that the temperature is r2.

If the temperature difference becomes smaller than 0.5°C, the compressor 23 is stopped (OF'F) and the circulation pump 10 is stopped (OFF) in order to finish Hebon cooling (533).
, and then returns to step S15.

Through the processes from step 929 to step S33, the second hot water temperature adjusting means is configured to cool the hot water in the bathtub 3 using the bathtub heat exchanger 8.

Further, in step S25, when it is determined that the temperature difference obtained by subtracting the set hot water temperature from the hot water temperature detected by the hot water temperature sensor 16 is smaller than 15° C., the process returns to step SI5.

In the above embodiment, when one operation switch 3.1 is turned on, ? , supplying hot water at the right temperature and right amount using the rJ period thirst replenishment means, that is, initial control and subsequent heat retention control, furthermore, Nli supply of hot water and low temperature control in case of incorrect change in hot water temperature settings, etc. This figure shows that everything related to bath operation is automated, such as cooling when the setting is reset, stopping the control operation after the set time has elapsed, and the present invention Any device may be used as long as it includes a first hot water temperature adjusting means and a second hot water temperature regulating means using the bathtub heat exchanger 8.

Further, in the above embodiment, the bathtub heat exchanger 8 is used for reheating, but in the present invention, for example, a gas heating device is provided for reheating, and separately, a gas heating device for cooling is provided. The bathtub heat exchanger 8 may also be configured separately.

In the present invention, an outdoor heat exchanger is used to release the heat recovered as the bathtub heat exchanger 8 is cooled.

Instead of the exchanger 22, the hot water tank heat exchanger 18 or the indoor heat exchanger 26 may be used.

(Effects of the Invention) As described above, according to the present invention, cooling can be quickly performed from the initial cooling by water supply, and the set time can be set, for example, from the level during normal bathing. Set a time that is sufficient to supply water in m/m without overflowing when water is supplied, and if the water cannot be cooled to the specified temperature even after the set time has elapsed, stop cooling with the water jug and turn on the bathtub heat exchanger. Since cooling is performed using (8), overflow caused by cooling can be reliably avoided.

Moreover, since the bathtub heat exchanger (8) is used for cooling only when the water jug cannot be used for cooling, the number of cooling operations is lower than when the bathtub heat exchanger (8) is always used for cooling, and power consumption is reduced. The amount can now be reduced and cooling can be performed economically.

Furthermore, since the water temperature is low in the winter, it is possible to cool the water to the specified temperature almost only by supplying water, and cooling using the bathtub heat exchanger (8) tends to be concentrated in the summer when the water temperature is high, making indoor heating and cooling difficult. The heat source side unit (
If 1) is also used, the refrigerant circuit is in a cooling cycle during cooling operation in the summer, so the valve mechanism can be simply set to supply refrigerant in parallel without interrupting cooling operation. It has the advantage that it can be easily used in combination with an air conditioner because it only requires switching.

[Brief explanation of drawings]

Fig. 1 shows the system configuration of a bath water temperature regulating device according to an embodiment of the present invention. FIG. 5 is a flowchart illustrating the operation of the heat retention control means of the present invention, and is a configuration diagram of a conventional example. G... Heat source side unit and outdoor unit, 8'.
... Bathtub heat exchanger, 13... Water supply valve, 16...
・Water temperature sensor, 22...Outdoor heat exchange as a heat exchanger for heat release-1
23...Compressor.

Claims (1)

[Claims] (1) A bathtub heat exchanger (8), a heat release heat exchanger (22, 18, 26), this heat release heat exchanger (22, 18, 26), and the bathtub heat exchanger ( 8), the bathtub heat exchanger (8) acts as an evaporator, and the heat release heat exchanger (2)
a compressor (23) that circulates and flows refrigerant so that the refrigerant (2, 18, 26) functions as a condenser; a water supply valve (13) that opens and closes to supply water to the bathtub (3); and the bathtub (3). Water temperature sensor (16) that detects the water temperature inside
The water supply valve (13) is opened when the water temperature detected by the water temperature sensor (16) is higher than the set temperature, and the water supply valve (13) is opened when the detected water temperature becomes equal to or lower than the set temperature. )
When the detected hot water temperature has not decreased below the set temperature even after the opening time of the water supply valve (13) by the first hot water temperature regulating means has passed the set time, a second hot water temperature adjusting means that closes the water supply valve (13) to operate the compressor (23) and stops the compressor (23) when the detected hot water temperature becomes equal to or lower than a set temperature; Bath water temperature control device.