JP4946835B2 - Water heater - Google Patents

Description

  The present invention relates to a hot water supply apparatus that notifies a user that high-temperature water of a predetermined temperature or higher is discharged.

2. Description of the Related Art Conventionally, there is a hot water storage type hot water supply apparatus that notifies that high-temperature water of a predetermined temperature or more comes out at the start of a chasing operation or the like by display or sound (see Patent Document 1).
JP 2006-349220 A

  However, since the technique of Patent Document 1 only notifies that high-temperature water comes out at the start of supply of high-temperature water, for example, when entering a bathtub after being informed, high-temperature water may still be out. May compromise the safety of users.

  In this invention, it is providing the hot-water supply apparatus from which a user can use a bathtub more safely.

The hot water supply apparatus according to the first invention includes hot water supply means, notification means, and a control unit. A hot water supply means supplies the hot water sent by the drive of a circulation pump (P2) to a bathtub. The notification means continues to notify that the hot water supply means is in a high temperature water supply state during an operation period involving driving of the circulation pump selected by the user. The control unit determines whether or not the hot water supply means is in a high temperature water supply state based on whether or not the circulation pump is driven. Furthermore, the hot water supply state is a hot water filling operation state in which hot water is applied to the bathtub.

The hot water supply apparatus of the present invention is a state in which the hot water supply means for supplying hot water to the bathtub is in a state where there is a possibility that high temperature water is poured into the bathtub (that is, the high temperature water supply state). The fact that the high-temperature water supply state is maintained throughout the operation period accompanied by driving continues to be notified by, for example, displaying “high temperature”.

  Therefore, the user can always know that it is in the hot water supply state during the operation period that involves driving the circulation pump in the hot water supply state. For this reason, the user can keep away from the hot water supply means in the high temperature water supply state, and can use the bathtub safely.

The hot water supply apparatus according to the second invention comprises hot water supply means, notification means, and a control unit. A hot water supply means supplies the hot water sent by the drive of a circulation pump (P2) to a bathtub. The notification means continues to notify that the hot water supply means is in a high temperature water supply state during an operation period involving driving of the circulation pump selected by the user. The control unit determines whether or not the hot water supply means is in a high temperature water supply state based on whether or not the circulation pump is driven. Furthermore, a high temperature water supply state is a hot water adding hot water operation state which adds high temperature water to a bathtub.

  The hot water supply apparatus of the present invention is a circulation pump when the hot water supply means for supplying hot water to the bathtub is likely to pour high temperature water into the bathtub (that is, the high temperature water supply state) as in the high temperature hot water operation state. For example, by displaying “high temperature”, it is kept informed that the hot water supply state is maintained throughout the operation period involving the driving of.

A hot water supply apparatus according to a third aspect of the present invention is the hot water supply apparatus according to the first or second aspect of the present invention , wherein the notification means has a display unit. The display unit continues to display that the hot water supply means is in a high temperature water supply state during an operation period involving driving of the circulation pump.

  The hot water supply apparatus of the present invention displays on the display section that the hot water supply means is in a high temperature water supply state during an operation period involving driving of the circulation pump. Therefore, the user can visually determine that the hot water supply means is in the high temperature water supply state by visually checking the display unit during the operation period, and can prevent the hot water supply means from approaching. For this reason, if the user only performs the act of viewing the display unit when there is a possibility of approaching the hot water supply means during the operation period involving the driving of the circulation pump, the hot water supply means is in the high temperature water supply state. I can confirm that.

A hot water supply apparatus according to a fourth aspect of the present invention is the hot water supply apparatus according to any one of the first to third aspects of the present invention , wherein the notification means includes a sound generation unit. The sound generator continues to generate a first notification sound that informs that the hot water supply means is in a high temperature water supply state during an operation period that involves driving the circulation pump.

  The hot water supply apparatus of the present invention causes the sound generating unit to generate the first notification sound that the hot water supply means is in the high temperature water supply state. Therefore, the user can audibly determine that the hot water supply means is in the high temperature water supply state during the operation period involving the driving of the circulation pump, and can prevent the hot water supply means from approaching. For this reason, the user can confirm that the hot water supply means is in a high temperature water supply state during the operation period without being aware of it particularly when approaching the hot water supply means.

A hot water supply apparatus according to a fifth aspect of the present invention is the hot water supply apparatus according to any of the first to fourth aspects of the present invention, wherein the notification means is mounted on a bathroom remote controller installed in a bathroom where a bathtub is provided.

  In the hot water supply apparatus of the present invention, the notification means is mounted on the bathroom remote controller. Therefore, the user can confirm that the hot water supply means is in the high temperature water supply state when using the bathroom.

A hot water supply apparatus according to a sixth aspect of the present invention is the hot water supply apparatus according to any of the first to fifth aspects of the invention, wherein the high temperature water supply state further includes a reheating operation state in which the hot water in the bathtub is heated again .

  In the hot water supply apparatus of the present invention, the high-temperature water supply state is a chasing operation. Note that the “reaping operation” here refers to an operation of reheating the hot water stored in the bathtub. Therefore, the hot water supply apparatus of the present invention can keep informing that the hot water supply means is in the high temperature water supply state during the reheating operation. For this reason, the user can confirm that the hot water supply means is in a high-temperature water supply state during the chasing operation.

In the hot water supply apparatus according to the first aspect of the invention, the user can always know that the hot water supply state is present during an operation period involving driving of the circulation pump that is in the hot water supply state such as hot water filling operation . For this reason, the user can keep away from the hot water supply means in the high temperature water supply state, and can use the bathtub safely.

In the hot water supply apparatus according to the second aspect of the invention, the user can always know that the high-temperature water supply state is present during the operation period involving the driving of the circulation pump that is in the high-temperature water supply state such as the high-temperature addition hot water operation. . For this reason, the user can keep away from the hot water supply means in the high temperature water supply state, and can use the bathtub safely.

In the hot water supply apparatus according to the third aspect of the present invention, it is possible to visually determine that the hot water supply means is in the high temperature water supply state during the operation period accompanied by driving of the circulation pump, and it is possible to prevent the hot water supply means from approaching.

In the hot water supply apparatus according to the fourth aspect of the present invention, the user can audibly determine that the hot water supply means is in the high temperature water supply state during the operation period accompanied by driving of the circulation pump, and prevent the hot water supply means from approaching. be able to. In particular, the user can confirm that the hot water supply means is in the high temperature water supply state without being conscious when approaching the hot water supply means.

In the hot water supply apparatus according to the fifth aspect of the invention, the user can confirm that the hot water supply means is in the hot water supply state when using the bathroom.

  In the hot water supply apparatus according to the sixth aspect of the invention, it is possible to keep informing during the operation period that the hot water supply means is in the high temperature water supply state during the reheating operation. For this reason, the user can confirm that the hot water supply means is in a high-temperature water supply state during the chasing operation.

  Hereinafter, an embodiment of a hot water supply apparatus 1 according to the present invention will be described based on the drawings.

<Configuration of heat pump water heater>
FIG. 1 is a schematic configuration diagram of a hot water supply apparatus 1 according to an embodiment of the present invention. The hot water supply device 1 is a device that heats tap water and supplies hot water to the bathtub 5 at home by performing a vapor compression refrigeration cycle operation using CO2 refrigerant. The hot water supply device 1 mainly includes a hot water storage unit 3 having a hot water storage tank 31 for storing hot water and a heat pump unit 2 having a refrigerant circuit 20.

(1) Hot Water Storage Unit FIG. 2 is a schematic view of the hot water storage unit 3. The hot water storage unit 3 mainly includes a hot water storage tank 31, a heating circulation path 39, a hot water supply pipe 51 from the hot water supply outlet 33 to the hot water connection port 41 or the bath circulation outlet 44, and a recirculation circulation path 47. ing.

(Hot water storage tank and heating circuit)
The hot water storage tank 31 is provided with a water supply port 32 on the bottom wall, and a hot water supply hot water outlet 33 and a chasing hot water outlet 34 on the upper wall. The hot water storage tank 31 is supplied with tap water from the water supply port 32, can discharge hot hot water stored in the hot water storage tank 31 from the hot water supply / outlet port 33, and can supply the hot water to the bathtub 5 or the like. A water supply channel 38 for supplying tap water is connected to the water supply port 32. In addition, a water intake 35 is formed in the bottom wall of the hot water storage tank 31, and a hot water supply port 36 is formed in the upper part of the side wall (peripheral wall). The intake port 35 and the hot water supply port 36 are connected to a heating circuit 39, and a circulation pump P 1 and a water heat exchanger 22 of the heat pump unit 2 described later are connected to the heating circuit 39.

  Further, the hot water storage tank 31 includes a remaining hot water 50 liter temperature sensor T4, a remaining hot water 100 liter temperature sensor T5, and a remaining hot water 190 liter temperature sensor for detecting the temperature of hot water in each layer in the hot water storage tank 31 from above and below on the peripheral wall. T6, remaining hot water 240 liter temperature sensor T7, and remaining hot water 310 liter temperature sensor T8 are provided. Furthermore, a can body temperature sensor T3 for detecting the temperature of the uppermost hot water is provided at the uppermost part of the hot water storage tank 31 (that is, at the position of 0 liter). In this embodiment, the remaining hot water 50 liter temperature sensor T4, the remaining hot water 100 liter temperature sensor T5, the remaining hot water 190 liter temperature sensor T6, the remaining hot water 240 liter temperature sensor T7, the remaining hot water 310 liter temperature sensor T8, and the can body temperature. The sensor T3 is a thermistor.

  The heating circulation path 39 is mainly composed of a circulation pump P1 and a three-way valve V2, and is connected by a water heat exchanger 22 of the heat pump unit 2 and a heat exchange path 49.

  The circulation pump P <b> 1 is connected to the vicinity of the water intake 35 of the hot water storage tank 31. A water heat exchanger 22 is connected to the discharge side of the circulation pump P1. The circulation pump P <b> 1 causes unheated water in the hot water storage tank 31 to flow out from the water port 35 to the heating circulation path 39, and causes unheated water to flow into the heat exchange path 49 in the water heat exchanger 22. Unheated water that has flowed into the water heat exchanger 22 is heated in the heat exchange path 49 in the water heat exchanger 22 and returned to the hot water storage tank 31 from the hot water supply port 36. The heating circulation path 39 is provided with a tapping temperature sensor T1 downstream of the heat exchange path 49 (specifically, between the water heat exchanger 22 and the three-way valve V2), and upstream of the heat exchange path 49. An incoming water temperature sensor T2 is provided on the side (specifically, between the circulation pump P1 and the water heat exchanger 22). The hot water temperature sensor T1 and the incoming water temperature sensor T2 are thermistors.

  The three-way valve V <b> 2 is provided on the hot water supply port 36 side in the heating circuit 39, and is connected to a bypass channel 50 connected to a water return port 37 provided on the bottom wall of the hot water storage tank 31. For this reason, in this embodiment, hot water does not flow through the bypass channel 50, but water (hot water) that has entered the heating circuit 39 from the water intake 35 flows through the heating circuit 39 and flows from the hot water supply port 36 to the hot water storage tank 31. Normal operation returning to, and water (hot water) that has entered the heating circuit 39 from the water intake 35 flows through the heating circuit 39, passes through the bypass channel 50 via the three-way valve V2, and stores hot water from the water return port 37. Bypass operation returning to the tank 31 can be performed.

(Hot water supply piping)
The hot water supply pipe 51 is connected to the hot water outlet 31 of the hot water storage tank 31 and is branched into two systems, a hot water supply system 51a for supplying hot water to the bathtub 5 and a hot water supply system 51b for supplying hot water to the other. Yes.

  In the bathtub hot water system 51a, the hot water discharged from the hot water supply outlet 33 is mixed with tap water by the hot water mixing valve V4, and from the bath circulation outlet 44 through the hot water solenoid valve V5 and the bath circulation pump P2. 5 is supplied. The hot water mixing valve V4 adjusts the mixing ratio of hot water and tap water so that the temperature is set by the user. The hot water solenoid valve V5 opens and supplies hot water to the bathtub 5 when the user issues a “hot water command” for storing hot water in the bathtub 5 by the bathroom remote controller 7. The “hot water command” referred to here is a command issued by the control unit 6 described later when hot water is automatically supplied to the bathtub 5. A hot water flow rate sensor 42 and a hot water temperature sensor T10 are provided downstream of the hot water solenoid valve V5. The hot water flow rate sensor 42 is a flow meter that can detect the flow rate of hot water used for hot water. The hot water temperature sensor T10 is a temperature sensor that can detect the temperature of the hot water used in the hot water beam, and is a thermistor. The bathtub hot water system 51a is connected to an outward pipe portion of a bathtub circulation path 43, which will be described later. .

  In the hot water supply system 51b, the hot water discharged from the hot water supply outlet 33 is mixed with tap water by the hot water mixing valve V3 and supplied from the hot water connection port 41 to the hot water supply pipe 52 connected to a domestic hot water tap or a shower. ing. In the hot water supply system 51b, a hot water supply temperature sensor T9 and a hot water supply flow rate sensor 40 are further provided on the downstream side of the hot water supply mixing valve V3. The hot water supply temperature sensor T9 is a temperature sensor that can detect the temperature of hot water used by a hot water supply faucet or a shower, and includes a thermistor. The hot water flow rate sensor 40 is a flow meter that can detect the flow rate of hot water used by a hot water tap or a shower.

(Turning circuit)
The recirculation circulation path 47 is connected with a heat exchange circulation pump P3 and a recuperation heat exchanger 46. The reheating circulation path 47 is connected to the reheating hot water outlet 34 provided at the upper part of the hot water storage tank 31 and the reheating hot water supply port 48 provided at the lower part of the hot water storage tank 31. Moreover, the bathtub circulation path 43 connected to the bathtub 5 is provided, and the bath circulation pump P <b> 2 and the reheating heat exchanger 46 are connected to the bathtub circulation path 43. Further, the hot water storage unit 3 is provided with a bath circulation outlet 44 and a bath circulation return port 45 at the end (tub 5 side) of the bathtub circulation path 43. The bath circulation outlet 44 and the bath circulation return port 45 are connected to a bath hot water inlet / outlet 53 provided in the bathtub 5, and form a bathtub circulation path 43 together with the bathtub 5. Accordingly, when the user wants to recharge the hot water in the bathtub 5, the hot water in the recirculation circulation path 47 and the bathtub circulation path 43 is circulated to heat the hot water in the hot water storage tank 31 and the hot water in the bathtub 5. The hot water in the bathtub 5 can be warmed by exchanging.

  During the reheating operation, the heat exchange circulation pump P3 is driven, so that the hot water in the hot water storage tank 31 is taken into the recirculation circulation path 47 from the reheating outlet 34 and reheated heat exchanger 46. The heat is exchanged with the hot water flowing through the bathtub circulation path 43.

(2) Heat Pump Unit The heat pump unit 2 is installed outdoors and has a refrigerant circuit 20. The refrigerant circuit 20 is configured by sequentially connecting the compressor 21, the water heat exchanger 22 constituting the heat exchange path 49, the electric expansion valve V <b> 1, and the evaporator 23. That is, the compressor 21 and the water heat exchanger 22 are connected, the water heat exchanger 22 and the electric expansion valve V1 are connected, the electric expansion valve V1 and the evaporator 23 are connected, and the evaporator 23 and the compressor 21 is connected via an accumulator 25. Thereby, when the compressor 21 is driven, the water flowing through the heat exchange path 49 in the water heat exchanger 22 is heated. The refrigerant circuit 20 includes a liquid gas heat exchanger 24 that exchanges heat between the refrigerant pipe between the water heat exchanger 22 and the electric expansion valve V1 and the refrigerant pipe between the evaporator 23 and the accumulator 25. I have. The evaporator 23 is provided with a fan 26 for adjusting the ability of the evaporator 23.

(3) Bathroom remote controller The hot water supply apparatus 1 of the present embodiment includes a bathroom remote controller 7. The bathroom remote control 7 has a display unit 71, an input unit 72, and a speaker 73 (see FIG. 3). The display unit 71 includes a hot water supply set temperature display unit 71a, a remaining hot water amount display unit 71b, a bath water level display unit 71c, a bath temperature display unit 71d, a high temperature inflow display unit 71e, a hot water filling display unit 71f, a reheating warning display unit 71g, And there is a non-reflective display portion 71h. In the input unit 72, various commands (see below) can be issued to the hot water supply device, and various settings relating to various commands can be performed by a user's operation. In the speaker 73, when various commands are issued from the input unit 72, the fact is notified to the user, and when various settings regarding the various commands are changed by the input unit 72, the fact is voiced to the user. I tell you. And each display part 71a-71h is displayed by the conditions mentioned later.

  The hot water supply set temperature display unit 71a displays a set temperature of hot water discharged from the hot water supply pipe 52 (hereinafter referred to as “hot water discharge set temperature”). The hot water discharge set temperature displayed on the hot water supply set temperature display unit 71 a can be changed by the input unit 72.

  The remaining hot water amount display unit 71b can display the amount of hot water in the hot water storage tank (hereinafter referred to as “remaining hot water amount”) in five levels. The remaining hot water amount display unit 71b includes a remaining hot water 50 liter temperature sensor T4, a remaining hot water 100 liter temperature sensor T5, a remaining hot water 190 liter temperature sensor T6, a remaining hot water 240 liter temperature sensor T7, a remaining hot water 310 liter temperature sensor T8, and a can. Based on the temperature of the hot water in each layer in the hot water storage tank 31 detected by the upper temperature sensor T3, the remaining hot water amount is derived, and the remaining hot water amount is displayed in five stages.

  The bath water level display part 71c can display the water level setting of the bathtub in 10 levels. The user can set the water level setting of the bathtub in 10 steps by the input unit 72, and the bath water level display unit 71c can display the water level setting set by the input unit 72.

  The bath temperature display part 71d can display the set temperature of the hot water in the bathtub. The user can set the set temperature (hereinafter referred to as bath temperature) of hot water stored in the bathtub by the input unit 72, and the bath temperature display unit 71d displays the bath temperature set by the input unit. That is, the bath temperature displayed by the bath temperature display unit 71d is a set temperature of hot water stored during hot water filling operation (see below) for storing hot water in the bathtub, and also keeps the hot water stored in the bathtub. This is the set temperature for heat insulation during the heat insulation operation.

  The high temperature inflow display portion 71e displays “high temperature” when high temperature hot water (hot water of 55 ° C. or higher) may be discharged from the hot water supply pipe 52 or the bath hot water inlet / outlet 53 (see below).

  The hot water filling display portion 71f displays that hot water or water is flowing into the bathtub during hot water filling operation or additional hot water operation.

  The chasing attention display portion 71g displays “chasing attention” when the hot water storage tank 31 has a small amount of remaining hot water and hot water runs out when chasing operation is performed. Thereby, when the amount of remaining hot water in the hot water storage tank 31 is small, it is possible to notify the user that hot water will be exhausted if the reheating operation is performed.

  The non-renewable display portion 71h displays “unrecognizable” when there is almost no remaining hot water in the hot water storage tank 31 and the reheating operation cannot be performed. As a result, the user can be informed that there is almost no remaining hot water in the hot water storage tank 31 to cover the chasing operation.

(4) Control part The hot water supply apparatus 1 of this embodiment is provided with the control part 6. FIG. When the bath circulation pump P <b> 2 is driven, the control unit 6 displays “high temperature” on the high temperature inflow display unit 71 e of the bathroom remote control 7. The control unit 6 is configured using, for example, a microcomputer having a CPU, a memory, an input / output interface and the like. Further, as shown in FIG. 3, the control unit 6 is connected so that it can receive the control signal of the bathroom remote control 7 and the detection signals of the various sensors T1 to T10, 40, 42, and these control signals. The various devices 21, 26, 64, 65 and the valves V1 to V5 can be controlled based on the detection signals.

<Operation of heat pump water heater>
(1) Operation of heat pump unit First, the compressor 21 is driven and the circulation pump P1 is driven.

  On the refrigerant circuit 20 side, the low-pressure gas refrigerant sucked into the compressor 21 is compressed into a high-pressure gas refrigerant. Thereafter, the high-pressure gas refrigerant is sent to the water heat exchanger 22 and is condensed by exchanging heat with unheated water supplied by the circulation pump P1 to become a high-pressure liquid refrigerant. Then, the high-pressure liquid refrigerant flows into the liquid gas heat exchanger 24, is further cooled by exchanging heat with the gas refrigerant evaporated in the evaporator 23, and enters a supercooled state. The supercooled high-pressure liquid refrigerant is reduced to near the suction pressure of the compressor 21 by the electric expansion valve V1, and is sent to the evaporator 23 as a low-pressure gas-liquid two-phase refrigerant. Heat is exchanged with outdoor air supplied by the fan 26 in the vessel 23 to evaporate into a low-pressure gas refrigerant.

  Then, the low-pressure gas refrigerant flows into the liquid gas heat exchanger 24, exchanges heat with the liquid refrigerant condensed in the water heat exchanger 22, and is further heated to be in an overheated state. The low-pressure gas refrigerant flows into the accumulator 25, and the low-pressure gas refrigerant that has flowed into the accumulator 25 is again sucked into the compressor 21.

(2) Hot water storage unit operation (boiling operation)
On the hot water storage tank 31 and the heating circulation path 39 side, the stored water flows out from the water intake 35 provided at the bottom of the hot water storage tank 31, and this flows through the heat exchange path 49 of the heating circulation path 39. In this way, unheated water flowing through the heat exchange path 49 of the heating circulation path 39 is heated by the hydrothermal exchanger 22 functioning as a condenser (boiling), and hot water is supplied through the three-way valve V2. It returns to the upper part of the hot water storage tank 31 from the port 36. The hot water is supplied to the hot water storage tank 31 by continuously performing such an operation. The three-way valve V2 performs a bypass operation when the boiling temperature is equal to or lower than a predetermined temperature, and stores hot water from the water return port 37 without returning low-temperature hot water below the predetermined temperature from the hot water supply port 36 to the hot water storage tank 31. Switching is performed so as to return to the tank 31.

(Hot water control)
In the hot water supply system 51b, tap water and hot water in the hot water storage tank 31 are mixed in the hot water supply mixing valve V3 so as to reach a temperature set by the user, and hot water is supplied from the hot water supply connection port 41.

(3) High temperature display control When the control unit 6 determines that the operation is hot water filling operation, high temperature addition hot water operation, and reheating operation, the high temperature inflow display unit 71e of the bathroom remote control 7 displays “high temperature” during the operation. Continue to be displayed. Hereinafter, hot water filling operation, high temperature hot water operation, and chasing operation will be described. As described above, the control unit 6 determines the hot water filling operation, the high temperature hot water operation, and the reheating operation based on whether or not the bath circulation pump P2 is driven.

(Hot water operation)
In the bathtub hot water system 51 a, when the user issues a “hot water command” by operating the input unit 72 of the bathroom remote controller 7, the hot water solenoid valve V 5 is opened and hot water is supplied to the bathtub 5. (Hot water operation). At this time, the hot water mixing valve V4 adjusts the mixing ratio based on the temperature set by the user (that is, “bath temperature” displayed on the bath temperature display portion 71d), and the hot water in the tap water and the hot water storage tank 31 is adjusted. And are mixed. And hot water will be supplied to a bathtub to the water level corresponding to the water level setting of the bathtub displayed by the bath water level display part 71c. The “water level corresponding to the water level setting of the bathtub” means that the water level obtained by dividing the state in which the bathtub is full into 10 equal parts is the water level corresponding to one stage. For example, the set water level is 7 (that is, the bath water level display section) If the first bar from the bottom to the seventh bar is displayed, the water level is set to 7/10 of the full water level. Further, during this hot water filling operation, the bath circulation pump P2 is driven.

(High temperature hot water operation)
When the user issues a “high temperature addition hot water command” by operating the input unit 72 of the bathroom remote control 7, the hot water solenoid valve V5 is opened and high temperature hot water is supplied to the bathtub 5 (high temperature hot water supply). operation). At this time, the hot water mixing valve V4 adjusts the mixing ratio based on a preset high temperature hot water temperature (for example, 55 ° C.) and mixes the tap water and the hot water in the hot water storage tank 31. A preset amount of water is supplied from the bath warm water inlet / outlet 53. Further, during this hot water filling operation, the bath circulation pump P2 is driven. In addition, during the hot water adding hot water operation, a hot water having a preset amount of water is supplied from the bath hot water inlet / outlet, but the amount of water does not need to be set in advance. The user may be able to freely set by operating.

(Reaping driving)
When a user operates the input unit 72 of the bathroom remote controller 7 to issue a “refreshing command”, the heat exchange circulation pump P3 is driven and the hot water in the hot water storage tank 31 circulates in the recirculation circulation path 47. At the same time, the bath circulation pump P <b> 2 is driven to circulate the hot water in the bathtub 5 in the bathtub circulation path 43. The reheating heat exchanger 46 heats the hot water in the hot water storage tank 31 and the hot water in the bathtub 5 to heat the hot water in the bathtub 5.

<Features>
Hot water supply apparatus 1 according to the present embodiment has a possibility that high-temperature hot water (hot water at 55 ° C. or higher) may be supplied to bathtub 5 from bath hot water inlet / outlet 53 (that is, hot water operation, high-temperature hot water operation, Or in the case of reheating operation), when the bath circulation pump P2 is driven, “high temperature” is displayed on the high temperature inflow display portion 71e of the bathroom remote control 7 during the time of hot water filling operation, high temperature hot water operation, or reheating operation. ”Continues to be displayed.

  Therefore, the user can always know that high-temperature hot water is supplied from the bath hot water inlet / outlet 53 when the hot water supply device 1 is in the hot water filling operation, the high-temperature hot water operation, or the reheating operation. For this reason, the user can keep away from the bath hot water inlet / outlet 53 while “high temperature” is continuously displayed on the high temperature inflow display portion 71e of the bathroom remote control 7, and can use the bathtub safely.

<Modification>
Although specific embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various modifications can be made within the scope of the present invention.

  In the hot water supply device 1 of the above embodiment, there is a possibility that high-temperature hot water (hot water of 55 ° C. or higher) may be supplied to the bathtub 5 from the hot / cold bath 53 (that is, hot water operation, high-temperature hot water operation, (In the case of a chasing operation), “high temperature” is continuously displayed on the high temperature inflow display portion 71e of the bathroom remote controller 7 during these operations. However, the present invention is not limited to this, and the speaker 73 provided in the bathroom remote controller 7 (FIG. 3). (See) may continue to notify the notification sound.

  Therefore, the user can audibly determine that hot hot water is being supplied from the bath hot water inlet / outlet 53 during the hot water filling operation, the high temperature hot water operation, or the chasing operation, and the bath hot water entrance / exit 53 can be prevented from approaching. In addition, since the user can audibly determine whether the operation is hot water filling operation, high temperature hot water operation, or chasing operation, when there is a possibility of approaching the bath warm water entrance 53, the bath warm water is not particularly conscious. It can be confirmed that high-temperature hot water may be supplied from the entrance / exit 53.

  The hot water supply apparatus according to the present invention has a feature that the user can use the bathtub safely, and is useful as a hot water supply apparatus that notifies the user that high-temperature water of a predetermined temperature or higher is discharged.

The schematic diagram of the hot-water supply apparatus concerning this embodiment. Schematic of a hot water storage unit. The schematic block diagram of a control part. Schematic of the display part of a bathroom remote control.

1 Hot water supply device 7 Bathroom remote control 53 Bath hot water entrance / exit (hot water supply means)
71 Display unit 73 Speaker (sound generating unit)

Claims (6)

A hot water supply means (53) for supplying high temperature water sent by driving of the circulation pump (P2) to the bathtub;
Informing means (71, 73) that keeps informing that the hot water supply means is in a high temperature water supply state during an operation period involving driving of the circulation pump selected by the user;
A control unit (6) for determining whether or not the circulating pump is driving whether or not the hot water supply means is in a high temperature water supply state;
Equipped with a,
The hot water supply state is a hot water filled operation state in which hot water is applied to the bathtub.
Hot water supply device (1). A hot water supply means (53) for supplying high temperature water sent by driving of the circulation pump (P2) to the bathtub;
Informing means (71, 73) that keeps informing that the hot water supply means is in a high temperature water supply state during an operation period involving driving of the circulation pump selected by the user;
A control unit (6) for determining whether or not the circulating pump is driving whether or not the hot water supply means is in a high temperature water supply state;
Equipped with a,
The high temperature supply state is a high temperature hot water operation state in which high temperature water is added to the bathtub.
Hot water supply device (1). The notification means includes a display unit (71),
The display unit continues to display that the hot water supply means is in the hot water supply state during an operation period involving driving of the circulation pump.
The hot water supply device (1) according to claim 1 or 2 . The informing means has a sound generator (73),
The sound generation unit continues to generate a first notification sound that informs that the hot water supply means is in the high temperature water supply state during an operation period involving driving of the circulation pump.
The hot water supply device (1) according to any one of claims 1 to 3 . The notification means is mounted on a bathroom remote control (7) installed in a bathroom where the bathtub is provided.
The hot water supply device (1) according to any one of claims 1 to 4 . The hot water supply state further includes a reheating operation state in which the hot water in the bathtub is heated again.
Hot water supply device according to any one of claims 1 to 5 (1).

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