JPH07324807A - Device for additional heating of bathwater - Google Patents

Abstract

PURPOSE:To provide a device which, when additional heating is effected while the bather is in the bath, enables heating the bathwater at suitable temperatures and without causing the bather a disagreeable feeling and which, when speediness is desirable in additional heating, can be made to heat the bathwater in a short time by exertion of the capacity of the heating means to full. CONSTITUTION:A device for additional heating of bathwater has a bathtub 1, a circulation circuit 21 for additional heating connected to the bathtub 1, a heating means B for additional heating provided in the circulation circuit 21, and a controlling means C which controls the operation of the heating means B. There are provided selecting means 41, 45, 47 by which to select between higher-temperature additional heating for the supply of hot water at higher temperatures, heated by the heating means B, to the bathtub 1 and lower-temperature additional heating for hot water at lower temperatures than the higher-temperature additional heating. In accordance with information from the selecting means 41, 45, 47 the controlling means C controls the operation of the heating means B in a manner of making it supply the hot water to the bathtub 1 at temperatures in the range of the higher-temperature additional heating or at temperatures in the range of the lower-temperature additional heating.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has a bathtub, a reheating circulation passage communicating with the bathtub, and a reheating heating means provided in the circulation passage. The present invention relates to a bath reheating device having a control means for controlling the operation.

[0002]

2. Description of the Related Art Conventionally, as a reheating device of this type, there has been only a reheating device in which hot water supplied to a bath during reheating is always maintained at a substantially constant set temperature.

That is, as a general one, in order to shorten the reheating time, there is one that uniformly operates the reheating heating means such as a gas combustion type burner near the maximum capacity. As a result, the temperature of the hot water supplied to the bathtub at the time of reheating is almost always constant. Further, there was also one that reheats the heating means for reheating by always operating at or below the maximum capacity, but in any case, in the conventional reheating device, the temperature of the hot water supplied to the bathtub during reheating is almost constant. They were all set to.

[0004]

Therefore, in the case of uniformly heating the heating means for reheating, near the maximum capacity, it is possible to reheat the remaining hot water of the previous day or to reheat before the automatic heat retention. , It is convenient to shorten the reheating time when reheating while no one is in the bathtub.
When the bather reheats the bathtub while it is still in the bathtub, fairly hot water is supplied to the bathtub, which causes discomfort to the bather and may even cause burns. Also, for those that reheat less than the maximum capacity of the heating means, even if it is good to reheat while staying in the bathtub, no one can enter the bathtub like the remaining hot water on the previous day. Even if the heating means is not used, the heating means cannot be operated at its maximum capacity, and there is a drawback that it takes too much time for reheating for the capacity of the heating means.

The present invention focuses on such conventional drawbacks, and the purpose thereof is to provide a suitable hot water temperature without any discomfort when reheating while still in the bathtub. If you want to complete the reheating in a short time, it is convenient that you can make full use of the ability of the heating means to reheat,
It is to provide a practical reheating device.

[0006]

In order to achieve this object, the first characteristic configuration of the bath reheating device of the present invention is the temperature of hot water heated by the heating means for reheating and supplied to the bathtub. Is provided with a selection means for selecting high-temperature reheating with a high temperature and low-temperature reheating with a lower hot water temperature than this high-temperature reheating,
Based on the information from the selecting means, the control means for controlling the heating means controls the operation of the heating means so that the temperature of the hot water supplied to the bath becomes the temperature of high-temperature reheating or low-temperature reheating. The point is that it is configured as follows.

In a second characteristic configuration of the present invention, a first temperature detecting means for detecting the temperature of the hot water heated by the heating means is provided in the reheating circulation path downstream of the heating means, and the low temperature At the time of reheating, based on the detection result of the first temperature detecting means, the control means controls the operation of the heating means so that the temperature of the hot water supplied to the bathtub becomes the low temperature reheating temperature. The point is that it is configured as follows.

In a third characteristic constitution of the present invention, a second temperature detecting means for detecting the temperature of hot water from the bath is provided in the reheating circulation path upstream of the heating means, and the low temperature reheating At this time, the control means controls the operation of the heating means so that the temperature of the hot water supplied to the bath becomes lower as the hot water detected by the second temperature detecting means becomes higher. There is a point.

According to a fourth characteristic constitution of the present invention, the heating means comprises a gas combustion type burner and a heat exchanger heated by the burner, and the gas combustion type burner is provided with an ignition means. A water flow switch that detects that hot water above the set value has flowed through the heating circulation path is provided, and based on information from this water flow switch, the control means controls the operation of the ignition means and the gas combustion burner. It is configured to do so.

A fifth characteristic configuration of the present invention is that the selecting means is provided in a controller which can communicate with the control means by wire or wirelessly.

[0011]

As described above, according to the first characteristic configuration of the present invention, high-temperature reheating in which the temperature of the hot water supplied to the bathtub is high, and low-temperature reheating in which the temperature of the hot water is lower than this high-temperature reheating The control means for providing the selection means for selecting and controlling the heating means for reheating, based on the information from this selection means, changes the temperature of the hot water supplied to the bath to the temperature of high temperature reheating or low temperature reheating. Since it is configured to control the operation of the heating means as described above, for example, in the case of additional heating while staying in the bathtub and in the case of additional heating of the remaining hot water of the previous day or before bathing. In addition, depending on when no one is in the bathtub, the reheating mode can be freely selected.

[0012] That is, when reheating in the bathtub, by supplying hot water having a relatively low temperature to the bathtub to reheat it, it is possible to reheat without the possibility of discomfort or burns. In addition, if you want to reheat when there is no one in the bathtub, you can make full use of the capacity of the heating means for reheating to supply hot water at a relatively high temperature. The burning time can be shortened.

According to the second characteristic construction of the present invention, the first temperature detecting means for detecting the temperature of the hot water heated by the heating means is provided in the reheating circulation path downstream of the heating means. During the low temperature heating, based on the detection result of the first temperature detection means, the control means, the operation of the heating means so that the temperature of the hot water to be supplied to the bath is the temperature of the low temperature heating Since it is configured to control, it is possible to more reliably maintain the temperature of the hot water supplied to the bath at a desired temperature, as compared with a case where the heating means is uniformly controlled during low temperature heating. .

According to the third characteristic configuration of the present invention, the second temperature detecting means for detecting the temperature of the hot water from the bath is provided in the reheating circulation path upstream of the heating means, and the low temperature additional means is provided. When heating, the control means controls the operation of the heating means such that the higher the temperature detected by the second temperature detection means becomes, the lower the temperature of the hot water supplied to the bathtub becomes. Therefore, it is possible to perform more precise control by taking into consideration the actual temperature of the hot water in the bathtub.

That is, when reheating while still in the bathtub, the bather feels hot because the hot water supplied to the bathtub after the reheating and the hot and cold water in the bathtub are mixed to some extent. Against. Therefore, simply maintaining the temperature of the hot water supplied to the bathtub is good when the temperature of the hot water in the bathtub is relatively low. However, when the temperature of the hot water in the bathtub gradually rises due to reheating, finally, The bather may feel hot. In this respect, the temperature of the hot water in the bathtub is detected by the second temperature detecting means, and the higher the temperature of the hot water is, the lower the temperature of the hot water supplied to the bathtub is to make the bather feel uncomfortable. It is possible to avoid it with certainty and comfortably reheat it. On the contrary, this means that when the temperature of the hot water in the bathtub is low, slightly hot water is supplied to the bathtub for additional heating, which causes discomfort to the bather. Instead, the reheating time can be shortened.

According to a fourth characteristic configuration of the present invention, the heating means comprises a gas combustion type burner and a heat exchanger heated by the burner, and the gas combustion type burner includes an ignition means. A water flow switch is provided to detect that hot water above a set value has flowed through the reheating circuit, and based on information from this water flow switch, the control means causes the ignition means and the gas combustion burner to operate. Therefore, for example, the combustion temperature is higher than that of the electric type, and especially in the case of high temperature heating, the heating time can be considerably shortened, yet the burner The ignition and stop of the can be carried out with a relatively simple structure by using an ignition means such as an igniter or a water flow switch.

According to the fifth characteristic configuration of the present invention, since the selecting means is provided in the controller which can communicate with the control means by wire or wirelessly, the main controller is usually used in the kitchen or the like. Needless to say, it is easy to use considering that the controller for the bath is installed in the bathroom.

[0018]

As described above, according to the first characteristic configuration of the present invention, it is possible to freely select low-temperature reheating and high-temperature reheating at the time of reheating, for example, in a bathtub. When entering and heating, it is possible to supply hot water of a relatively low temperature to the bathtub to reheat it without the possibility of discomfort or burns, and to add it when no one is in the bathtub. In the case of heating, it is possible to make full use of the ability of the heating means for additional heating to perform additional heating in a short time.

According to the second characteristic configuration, the temperature of the hot water supplied to the bath can be more reliably maintained at the desired temperature during the low temperature heating.

According to the third characteristic configuration, the actual temperature of the hot water in the bathtub is also taken into consideration to enable more precise and comfortable reheating, and the reheating time can be shortened.

According to the fourth characteristic configuration, the reheating time at the time of high temperature reheating can be considerably shortened as compared with the electric type, and it can be implemented with a relatively simple structure. .

According to the fifth characteristic configuration, it is possible to provide an extremely convenient reheating device for a bath.

[0023]

EXAMPLE An embodiment of the bath reheating device of the present invention will be described.
It will be described with reference to the drawings. FIG. 1 shows an overall outline of a hot water supply device for a bath including a reheating device, and includes a bathtub 1 and a hot water tap 2,
In addition, it has a heating means A for supplying hot water to a shower or the like (not shown) and a heating means B for additional heating for heating hot water in the bathtub 1. The heating means A for hot water supply and the heating means B for reheating can be an electric type or other type, but in this embodiment, both are gas combustion type.

The heating means A for hot water supply comprises a gas combustion type burner 3 and a heat exchanger 4 heated by the burner 3, and the gas combustion type burner 3 includes an igniter 5 which is an example of an ignition means. A frame rod 6 is provided for detecting whether or not ignition has occurred, and a fan 7 for supplying combustion air to the burner 3 is also provided. Similarly, the heating means B for additional heating comprises a gas combustion type burner 8 and a heat exchanger 9 heated by the burner 8, and the burner 8 also has an igniter 10 and a frame rod which are examples of ignition means. 11, a fan 12 for supplying combustion air, and the like are further provided.

The heat exchanger 4 of the heating means A for hot water supply has a water supply passage 13 for supplying water for heating, a hot water bath 1 for heating and a bath 1.
The hot water supply tap 2 and the hot water supply passage 14 for supplying to a shower or the like (not shown) are connected, and the water supply passage 13 and the hot water supply passage 14 are connected by a bypass passage 15, and the hot water supply passage 14 and the bypass passage 15 are connected. The mixing valve 16
Is provided. This mixing valve 16 is for mixing the two while adjusting the ratio of the amount of hot water from the hot water supply passage 14 and the amount of water from the bypass passage 15 to obtain hot water of a desired temperature. It is operated by an electric motor.

In the water supply passage 13 of the heating means A for hot water supply,
A water flow switch 17 for detecting that water of a set value or more flows through the water supply passage 13 and a water amount sensor 1 for detecting the water flow amount.
8 is arranged such that the water flow switch 17 is located on the upstream side, and the hot water supply passage 14 on the downstream side of the mixing valve 16
Is a thermistor 19 that detects the temperature of the hot water after being mixed by the mixing valve 16, and a water flow that detects that hot water of a set value or more has flowed through the hot water supply passage 14 near the hot water tap 2. A switch 20 is provided.

The heat exchanger 9 of the heating means B for reheating is connected to a reheating circulation passage 21 for circulating hot water in the bathtub 1, and both openings of this circulation passage 21 are connected to the adapter 22.
The opening is communicated with the inside of the bathtub 1 via. This circuit 2
The hot water supply passage 14 on the downstream side of the mixing valve 16 is connected to the upstream side of the heat exchanger 9 of No. 1 through an electromagnetic opening / closing valve 23, a backflow prevention hopper 24, a check valve 25, and the like.

A downstream side of the heat exchanger 9 in the reheating circulation path 21 is a thermistor 26 as a first temperature detecting means for detecting the temperature of the hot water after being reheated by the heat exchanger 9. Is provided. Further, in the reheating circulation passage 21 upstream of the heat exchanger 9 and upstream of the connection point of the hot water supply passage 14, the thermistor 27 as the second temperature detecting means and the circulation passage 21, a water flow switch 28 for detecting that hot water or more flowing above a set value flows,
A two-way valve 29 and a reheating pump 30 are arranged in this order.

The burner 3 of the heating means A for hot water supply and the burner 8 of the heating means B for reheating are configured to be supplied with fuel gas for general household use, and are connected to the burner 3 of the heating means A for hot water supply. The gas supply passage 31 is provided with an interrupting valve 32 for interrupting the supply of the fuel gas and an electromagnetic proportional valve 33 for adjusting the gas supply amount to the burner 3. Another gas supply path 34 is branched from the gas supply path 31 between the intermittent valve 32 and the electromagnetic proportional valve 33, and this gas supply path 34 is connected to the burner 8 of the heating means B for reheating. The gas supply passage 34 is also provided with an electromagnetic proportional valve 35 for adjusting the amount of gas supplied to the burner 8.

The operations of the heating means A for hot water supply and the heating means B for reheating are all controlled by a control section C as control means, and the control section C is a main controller 36 or a bath which can communicate by wire or wirelessly. Controller 3
7 and the command from the sub controller (not shown). The main controller 36 is usually installed in a kitchen or the like, and as shown in FIG. 2, an operation switch 38 for instructing start and stop of hot water supply, a temperature setting switch 39 for setting the hot water supply temperature, and a hot water beam switch 40. An appropriate temperature switch 41 for heating a high temperature when heating the remaining hot water on the previous day, a display unit 42 for displaying various information, and the like are provided. For the bath controller 37,
Normally, it is installed in a bathroom or the like, and as shown in FIG. 3, a temperature setting switch 43, a hot water beam switch 44, and an appropriate temperature switch for high temperature heating, for setting hot water temperature, heat retention temperature, reheating temperature, etc. 45, a display unit 46 for displaying various information, and the like, and a reheating switch 47 for low-temperature reheating.

That is, as will be described in detail later, when the appropriate temperature switch 41 of the main controller 36 and the appropriate temperature switch 45 of the bath controller 37 are pressed, the hot water is supplied to the bathtub 1 to reheat the bath and the bath is heated. When the reheating switch 47 of the operation controller 37 is pressed, the low temperature reheating is performed in which the low temperature hot water is supplied to the bathtub 1. It is the suitable temperature switch 41 of the main controller 36, and the suitable temperature switch 45 and the additional heating switch 47 of the bath controller 37 that select between the high temperature heating and the low temperature heating, and these switches 41 are used in this specification. , 45, 47 are collectively referred to as selecting means for selecting high-temperature heating and low-temperature heating.

Next, the control operation of the entire hot water supply apparatus by the control unit C will be briefly described. When the operation switch 38 of the main controller 36 is pressed and, for example, the hot water tap 2 is opened, the general hot water supply mode is set and the water supply passage 13 is opened. The water flow switch 17 detects that water equal to or more than a set value has flowed, drives the fan 7, and disconnects the on / off valve 3 of the gas supply path 31.
2 is opened, the solenoid proportional valve 33 is adjusted, and the igniter 5 ignites the burner 3 of the heating means A for hot water supply. The hot water after being heated by the heat exchanger 4 of the hot water supply heating means A is mixed with the water from the bypass passage 15 by the mixing valve 16 and discharged from the hot water tap 2. At this time, the thermistor 1
9, the temperature of the hot water is detected, the mixing valve 16 is controlled based on this detection result, and the temperature of the hot water discharged from the hot water tap 2 is maintained at the temperature set by the temperature setting switch 39 of the main controller 36. To be done.

The hot water beam switch 40 of the main controller 36 or the hot water beam switch 4 of the bath controller 37
When 4 is pressed, it becomes hot water mode, the solenoid valve 23 opens,
Similar to the general hot water supply mode, the hot water after being heated by the heat exchanger 4 of the heating means A for hot water supply and mixed by the mixing valve 16 is, as shown by a broken line in FIG.
It is supplied into the bathtub 1 through the adapters 22 from both openings. Even in this hot water mode, the mixing valve 16 is controlled based on the detection result of the thermistor 19.
At this time, hot water having the temperature set by the temperature setting switch 43 of the bath controller 37 is supplied, and the amount of hot water supplied to the bathtub 1 is measured by the water amount sensor 18.

If the hot water tap 2 is opened in the hot water beam mode, the general hot water supply mode takes precedence, and at this time, the measurement of the hot water amount by the water amount sensor 18 is temporarily stopped by the detection result of the water flow switch 20. To be done. In this way, when the water amount sensor 18 finally detects that a predetermined amount of hot water has been supplied to the bathtub 1, the electromagnetic proportional valve 33 of the gas supply path 31 is closed and the combustion of the burner 3 is stopped, and the burner 3 is kept constant. The fan 7 is also stopped after a lapse of time. Further, the electromagnetic valve 23 is closed, the two-way valve 29 is switched, the reheating pump 30 is driven, and the hot and cold water in the bathtub 1 circulates in the reheating circulation path 21 as shown by the solid line in FIG. To do. The thermistor 27 detects the temperature of the circulating hot water, and the detected temperature is the temperature setting switch 4 of the bath controller 37.
If the temperature set in 3 is almost reached, the reheating pump 30 is stopped and the hot water beam mode is ended.

However, when the temperature detected by the thermistor 27 is lower than the set temperature, the additional heating mode is set.
That is, as shown in the flowchart of FIG. 4, when the temperature of the hot water flowing through the reheating circulation passage 21 is lower than the set temperature, the water flow switch 28 is operated to open the solenoid proportional valve 35 of the gas supply passage 34. The burner 8 of the heating means B for additional heating is ignited by the igniter 10, and the hot water flowing through the circulation path 21 for additional heating is heated by the heat exchanger 9 and supplied again to the bath 1. At that time, the temperature of the hot water after being heated by the heat exchanger 9 is detected by the thermistor 26, and in the reheating in the hot water beam mode, the temperature of the hot water after heating is relatively high at 80 ° C. As described above, the solenoid proportional valve 35 is proportionally controlled and heated at a high temperature. Then, when the temperature detected by the thermistor 27 reaches the temperature set by the temperature setting switch 43 of the bath controller 37, the electromagnetic proportional valve 35 is closed and the combustion of the burner 8 is stopped, and then the reheating pump. 30 is stopped and the hot water beam mode ends.

When it is desired to reheat the remaining hot water of the previous day, the appropriate temperature switch 41 of the main controller 36 or the appropriate temperature switch 45 of the bath controller 37 is pressed to enter the reheating mode. In this case as well, it is exactly the same as the previous heating in the hot water beam mode, and the temperature of the hot water after heating by the heat exchanger 9 is 80 ° C., so that the hot water is heated at a high temperature and the heating time is shortened. To be

If the bather wants to reheat the bath while still in the bathtub 1, he / she presses the reheating switch 47 of the bath controller 37. Also in this case, it will be the reheating mode,
As shown in FIG. 4, the reheating pump 30 is driven so that the hot water in the bathtub 1 circulates in the reheating circulation path 21 as shown by the solid line in FIG. 1, and the temperature of the circulating hot water is the thermistor 27. If the detected temperature reaches the temperature set by the temperature setting switch 43 of the bath controller 37, the reheating pump 30 stops and the reheating mode ends.

If the temperature detected by the thermistor 27 is below the set temperature, the water flow switch 28 is operated to open the electromagnetic proportional valve 35 of the gas supply passage 34, and the igniter 10 ignites the burner 8 of the heating means B for additional heating. The hot water flowing through the reheating circulation path 21 is heated by the heat exchanger 9 and supplied into the bathtub 1. And, up to the point where the temperature of the hot water after heating is detected by the thermistor 26, it is the same as in the above-described reheating mode, but the bath controller 37
When the reheating switch 47 is pressed, the electromagnetic proportional valve 35 is proportionally controlled so that the temperature of the hot water after heating is not 80 ° C. but 70 ° C. which is lower than that, and low temperature heating is performed. . In this way, if the temperature of the hot water supplied to the bathtub 1 is set to 70 ° C., the temperature of the hot water will be less than 50 ° C. at most even at a position 2 cm away from the adapter 22, so that the bathing in the bathtub 1 It does not make the person feel hot or cause any discomfort. The temperature detected by the thermistor 27 is the controller 3 for the bath.
When the temperature set by the temperature setting switch 43 of No. 7 is reached, the electromagnetic proportional valve 35 is closed and the combustion of the burner 8 is stopped, and then the reheating pump 30 is also stopped and the reheating switch 47 is operated. The low temperature heating mode at that time ends.

[Other Embodiments] In the embodiments described so far, the temperature of the hot water supplied from the reheating circulation path 21 to the bathtub 1 at the time of reheating is 80 ° C. at the time of high temperature reheating, and the low temperature reheating Although it was shown that the temperature was set to 70 ° C at the time of
It is not necessary to set 0 ° C and 70 ° C. That is, the hot water temperature at the time of high-temperature reheating should be determined in consideration of the performance of the burner 8 of the heating means B for reheating, and the hot water temperature at the time of low-temperature reheating is determined by the bather. It only has to be set to a temperature at which it does not feel hot when it is in 1.

Furthermore, without detecting the temperature of the hot water supplied from the additional heating circulation path 21 to the bathtub 1, the combustion of the burner 8 of the additional heating means B is simply performed by high temperature additional combustion and low temperature additional combustion. It can also be carried out by switching between two stages of burning combustion. In this case, it is sufficient to set the high-temperature reheating combustion as close to the upper limit of the burner 8 capacity as possible, and to set the low-temperature reheating combustion to such an extent that the bather does not feel hot. In this case, it goes without saying that the structure is simpler than that of the above-described embodiment, and the thermistor 26 as the first temperature detecting means provided in the reheating circulation passage 21 on the downstream side of the heat exchanger 9 is provided. It can be omitted.

The thermistor 27 as the second temperature detecting means provided in the reheating circulation passage 21 upstream of the heat exchanger 9 is for detecting the temperature of the hot water in the bath 1. By using the temperature detected by the thermistor 27, it is possible to perform more precise low temperature heating.
That is, when the temperature of the hot water in the bathtub 1 is low, the bather does not feel that the hot water is hot even if the hot water having a somewhat high temperature is supplied to the bathtub 1, but the temperature of the hot water in the bathtub 1 becomes high. As you become more and more likely to feel hot. Therefore, the higher the hot water temperature detected by the thermistor 27,
The temperature of the hot water supplied from the reheating circulation path 21 to the bathtub 1 may be controlled to be low, and by controlling in this way, the bather does not feel uncomfortable during low temperature reheating. The reheating time can be shortened without giving. In this case, depending on the hot water temperature detected by the thermistor 27, the temperature of the hot water supplied from the reheating circulation passage 21 may be changed in two steps or in three steps, or may be changed to an unauthorized floor. Good.

It should be noted that although reference numerals are given in the claims for convenience of comparison with the drawings, the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of an entire hot water supply device including a reheating device.

[Figure 2] Front view of the main controller

[Figure 3] Front view of the bath controller

FIG. 4 is a flowchart showing a control operation.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bathtub 8 Gas combustion type burner 9 Heat exchanger 10 Ignition means 21 Reheating circuit 26 First temperature detecting means 27 Second temperature detecting means 28 Water flow switch 36, 37 Controller 41, 45, 47 Selection means B For reheating Heating means C control unit

Claims (5)

[Claims] 1. A bathtub (1), a reheating circulation passage (21) communicating with the bathtub (1), and a heating means (B) for reheating provided in the circulation passage (21). A bath reheating device having a control means (C) for controlling the operation of the heating means (B), the bath heating apparatus being heated by the heating means (B)
The selection means (41), (45), (47) is provided for selecting high-temperature reheating with a high temperature of hot water supplied thereto, and low-temperature reheating with a lower temperature of hot water than this high-temperature heating. Based on the information from the means (41), (45), (47), the control means (C) sets the temperature of the hot water supplied to the bathtub (1) to the temperature for high temperature addition or low temperature addition. A reheating device for a bath configured to control the operation of the heating means (B) as described above. 2. A first temperature detecting means (26) for detecting the temperature of the hot water heated by the heating means (B) is provided in the reheating circulation path (21) downstream of the heating means (B). The control means (C) is provided based on the detection result of the first temperature detection means (26) during the low temperature heating.
The bath reheating device according to claim 1, wherein the operation of the heating means (B) is controlled so that the temperature of the hot water supplied to the bathtub (1) becomes a low temperature reheating temperature. . 3. A second temperature detecting means (27) for detecting the temperature of hot and cold water from the bath (1) is provided in the reheating circulation path (21) upstream of the heating means (B), and At the time of low temperature heating, the control means (C) controls so that the temperature of the hot water supplied to the bathtub (1) becomes lower as the temperature detected by the second temperature detecting means (27) becomes higher.
The bath reheating device according to claim 2, which is configured to control the operation of the heating means (B). 4. The heating means (B) comprises a gas combustion type burner (8) and a heat exchanger (9) heated by the burner (8), and the gas combustion type burner (8) is ignited. In addition to the means (10), a water flow switch (28) for detecting that hot water having a temperature equal to or more than a set value flows through the reheating circulation path (21) is provided, and the water flow switch (2) is provided.
The bath supplement according to claim 3, wherein the control means (C) is configured to control the operation of the ignition means (10) and the gas combustion burner (8) based on information from 8). A heating device. 5. The selecting means (41), (45), (4)
The bath reheating device according to claim 4, wherein 7) is provided in controllers (36) and (37) that can communicate with the control means (C) by wire or wirelessly.