JP2009168388A - Hot water supply device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hot water supply device capable of being properly shared by a plurality of family units and performing confirmation of the safety and emergency contact at least between two family units. <P>SOLUTION: This hot water supply device 100 for the plurality of family units including at least a first family unit and a second family unit, comprises a hot water storage tank 20, a hot water producing means 15 having a heat pump unit 1 as a heating element, a first hot water supply passage 3A for the first family unit, a second hot water supply passage 3B for the second family unit, first mixing valves 71, 72 disposed in the first hot water supply passage 3A, second mixing valves 73, 74 disposed in the second hot water supply passage 3B, a first operation terminal 6A for the first family unit, a second operation terminal 6B for the second family unit, and a control means 8. The first operation terminal 6A and the second operation terminal 6B are connected to communicate with each other through the control means 8. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a hot water supply apparatus that supplies hot water from a hot water storage tank.

  Conventionally, a hot water supply apparatus having a hot water storage tank is known. For example, Patent Document 1 discloses a hot water supply apparatus 200 as shown in FIG. The hot water supply apparatus 200 includes a hot water storage tank unit 101 having a hot water storage tank 102 to which water is supplied to a lower portion from a water supply pipe 109, and a heat pump unit 103 as a heating body for heating water in the hot water storage tank 102. The heat pump unit 103 has a refrigerant circuit 130 in which a compressor 131, a high-pressure side heat exchanger 132, an expansion valve 133, and a low-pressure side heat exchanger 134 are sequentially connected. The hot water storage tank 102 and the high pressure side heat exchanger 132 of the heat pump unit 103 are connected in a loop by a water supply pipe 110 and a hot water supply pipe 111. A pump 135 is provided in the middle of the water supply pipe 110. And by operation | movement of the pump 135, the water in the hot water storage tank 102 is extracted from the lower part through the water pipe 110, is sent to the high voltage | pressure side heat exchanger 132, and is heated here and becomes hot hot water. The generated hot water is returned to the upper part of the hot water storage tank 102 via the hot water supply pipe 111. In this way, hot water is stored in the hot water storage tank 102 from above.

  The hot water storage tank 102 is connected to a hot water supply terminal 104 such as a faucet or a shower and a bathtub 106 by piping. When hot water stored in the hot water storage tank 102 is used at the hot water supply terminal 104, the hot water passes through the hot water supply pipe 108, the intermediate mixing valve 114, the relay pipe 115, the terminal mixing valve 116, and the first hot water supply pipe 117. Then, it is supplied from the upper part of the hot water storage tank 102 to the hot water supply terminal 104. Hot water supplied to the hot water supply terminal 104 is mixed with water from the water supply pipe 109 so as to reach a predetermined terminal hot water supply temperature at the terminal mixing valve 116. The terminal hot-water supply temperature can be set to a desired temperature by the user using the kitchen remote controller 105 installed in the kitchen or the bathroom or the bath remote controller 107 installed in the bathroom.

  On the other hand, when hot water stored in the hot water storage tank 102 is used to fill the bathtub 106 with hot water, the hot water is used as the tapping pipe 108, the intermediate mixing valve 114, the relay pipe 115, the bath mixing valve 118, the second hot water supply. It is supplied to the bathtub 106 from the upper part of the hot water storage tank 102 via the pipe 119. The hot water supplied to the bathtub 106 is mixed with water from the water supply pipe 109 so as to reach a predetermined bath hot water supply temperature by the bath mixing valve 118. The bath water supply temperature can be set to a desired temperature by the user using the bath remote controller 107.

Furthermore, the hot water supply apparatus 200 can perform a reheating operation in which the hot water in the bathtub 106 is heated again using the hot water in the hot water storage tank 102. That is, the hot water supply apparatus 200 includes a bath heat exchanger 120 that exchanges heat between hot water stored in the upper side of the hot water storage tank 102 and hot water in the bathtub 106.
JP-A-2005-274132

  If the hot water supply apparatus 200 as shown in FIG. 4 can be shared by a plurality of households residing in a two-family house or an apartment house, the equipment cost can be greatly reduced. However, the conventional hot water supply device is not intended to be shared by a plurality of households.

  Therefore, the present inventors have devised a hot water supply apparatus for a plurality of households suitable for sharing by a plurality of households. In this hot water supply apparatus, a plurality of hot water passages are provided for guiding the hot water stored in the hot water storage tank to each household, and in each hot water supply passage, the hot water from the hot water storage tank is supplied with water so as to reach a predetermined hot water supply temperature. A mixing valve for mixing is provided. An operation terminal is provided for each household, and each operation terminal can independently set the hot water supply temperature in the corresponding household.

  By the way, in a two-family house or an apartment house, for example, when an elderly household and a relative household live in an independent residence, the relative household cannot immediately confirm the accident even if the elderly household has an accident. In particular, elderly people often have accidents in the bathroom. Or it may catch fire from the kitchen.

  In view of such circumstances, an object of the present invention is to enable safety confirmation or emergency communication between at least two households using a hot water supply apparatus suitable for sharing by a plurality of households.

  Inventors of the present invention pay attention to the fact that operation terminals are provided for each household in a hot water supply apparatus for multiple households, and if this hot water supply apparatus is used, safety confirmation or emergency communication between specific households can be made inexpensively. I thought that I could do it, and came to make this invention.

  That is, the present invention is a hot water supply apparatus for a plurality of households including at least a first household and a second household, wherein a hot water storage tank to which water is supplied at a lower part and water extracted from the lower part of the hot water storage tank are heated. Hot water generating means for returning the hot water to the upper part of the hot water storage tank, a first hot water supply path and a second hot water passage for guiding the hot water stored in the hot water storage tank to the first household and the second household, respectively. A first mixing valve and a second mixing valve disposed in each of the hot water supply passage, the first hot water supply passage, and the second hot water supply passage, and for mixing hot water from the hot water storage tank with water so as to reach a predetermined hot water supply temperature. A first operation terminal capable of setting the hot water supply temperature in the first household, a second operation terminal capable of setting the hot water supply temperature in the second household, the hot water generating means, the first mixing valve, and the first Control 2 mixing valves And a control unit that, the, wherein the first operation terminal and the second operation terminal is a call connected to each other via the control means, to provide a water heater.

  According to said structure, since hot water of a desired temperature can be each guide | induced to a 1st household and a 2nd household by setting hot water supply temperature using a 1st operation terminal and a 2nd operation terminal, It is a hot water supply device suitable for household use.

  Further, in the configuration of the present invention, since the first operation terminal and the second operation terminal are connected so as to be able to talk, safety confirmation or emergency communication between the first household and the second household using the hot water supply device. It can be performed.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  FIG. 1 shows a hot water supply apparatus 100 according to an embodiment of the present invention. Although this embodiment demonstrates the hot water supply apparatus 100 for two households for two-family houses, this invention is applicable also to the hot water supply apparatus for multiple households more than three households for apartment houses, for example. In FIG. 1, the left household is a first household (for example, an elderly household) that needs attention, and the right household is a second household (for example, a relative household) that cares about the first household.

  The hot water supply apparatus 100 includes a hot water storage tank unit 2 having a hot water storage tank 20, a heat pump unit 1 as a heating body, a control means 8 for controlling the heat pump unit 1, the first operating terminal 6A for the first household, And a second operation terminal 6B for two households.

  The hot water storage tank 20 stores hot water so that it can be pushed out from the upper part by water supplied to the lower part. In the hot water storage tank 20, the hot water is shifted upward and the cold water is shifted downward due to the difference in specific gravity. Is formed. Specifically, a water supply pipe 10 extending from a water source (not shown) such as a water pipe is connected to the lower part of the hot water storage tank 20. The water supply pipe 10 is provided with a water supply pressurizing pump 11 and a pressure reducing valve 12 in order from the upstream side, and the pressure in the hot water storage tank 20 is set to a pressure set by the pressure reducing valve 12 below the hot water storage tank 20. Water is supplied from the water source so that it can be maintained. The capacity of the hot water storage tank 20 is, for example, 450 to 600 L for two households. In addition, when the pressure of the water sent from a water source is high enough, you may abbreviate | omit the feed water pressurization pump 11. FIG.

  The heat pump unit 1 has a refrigerant circuit 1a as shown in FIG. The refrigerant circuit 1a includes a compressor 1b that compresses the refrigerant, a high-pressure side heat exchanger 1c that exchanges heat with the water in the hot water storage tank 20 to dissipate heat, and an expansion unit 1d that expands the refrigerant that has dissipated heat. And a low-pressure side heat exchanger 1e that heat-exchanges the expanded refrigerant with the air blown by the fan 1f to evaporate it, and is connected in order. As the refrigerant, alternative chlorofluorocarbon or ammonia can be used, but carbon dioxide is preferably used. This is because if carbon dioxide is used, the compressed refrigerant is in a supercritical state, and hot water (eg, 90 ° C.) can be generated with high energy efficiency. The expansion means 1d may be a simple expansion valve or an expander for recovering power from the expanding refrigerant.

  The hot water storage tank 20 and the high pressure side heat exchanger 1 c of the heat pump unit 1 are connected in a loop by a water supply pipe 21 and a hot water supply pipe 22. Specifically, the lower part of the hot water storage tank 20 and the heated fluid inlet of the high pressure side heat exchanger 1c are connected by a water supply pipe 21, and the upper part of the hot water tank 20 and the heated fluid outlet of the high pressure side heat exchanger 1c are connected. Are connected by a hot water supply pipe 22. A boiling pump 23 is provided in the middle of the water supply pipe 21 so as to be positioned in the hot water storage tank unit 2. And by the operation of the boiling pump 23, the water in the hot water storage tank 20 is extracted from the lower part through the water pipe 21 and sent to the high-pressure side heat exchanger 1c, where it is heated to become hot hot water. . The generated hot water is returned to the upper part of the hot water storage tank 20 through the hot water supply pipe 22. Thus, hot water is stored in the hot water storage tank 20 from the upper side. That is, the water supply pipe 21, the heat pump unit 1, the hot water supply pipe 22, and the boiling pump 23 generate hot water by heating the water extracted from the lower part of the hot water storage tank 20 into hot water and returning the hot water to the upper part of the hot water storage tank 20. The means 15 is configured. In addition, the boiling pump 23 may be provided so that it may be located in the heat pump unit 1, and may be provided in the middle of the hot-water supply pipe 22. FIG.

  Further, a boiling temperature sensor 97 for detecting the temperature of the generated hot water is provided in the vicinity of the high pressure side heat exchanger 1c of the hot water supply pipe 22. Further, as shown in FIG. 1, a plurality of hot water storage temperature sensors 90 that detect the surface temperature of the hot water storage tank 20 are arranged in the hot water storage tank 20 in the vertical direction. Since the temperature distribution as described above is formed in the hot water storage tank 20, it is possible to grasp how much hot water is stored in the hot water storage tank 20 from the temperature detected by the hot water storage temperature sensor 90.

  The hot water storage tank unit 2 has, in addition to the hot water storage tank 20, a first hot water supply path 3A and a second hot water supply path 3B for guiding the hot water stored in the hot water storage tank 20 to the first household and the second household, respectively. Yes. The first hot water supply passage 3A for the first household includes a first terminal hot water supply passage 3a for supplying hot water stored in the hot water storage tank 20 to a hot water supply terminal 4A such as a faucet and a shower of the first household, and the hot water storage tank 20 And a first bath hot water supply passage 3b for supplying hot water stored in the hot water to the bathtub 5A of the first household. The second hot water supply passage 3B for the second household includes a second terminal hot water supply passage 3c for supplying the hot water stored in the hot water storage tank 20 to the hot water supply terminal 4B such as a faucet and shower of the second household, and the hot water storage tank 20 And a second bath hot water supply path 3d for supplying hot water stored in the bathtub 5B of the second household. In addition, a terminal mixing valve 71 and a bath mixing valve 72 are provided as first mixing valves for the first household in the middle of the first terminal hot water supply path 3a and the first bath hot water supply path 3b, respectively. A terminal mixing valve 73 and a bath mixing valve 74 are provided as second mixing valves for the second household, respectively, in the middle of the hot water supply path 3c and the second bath hot water supply path 3d. A branch pipe 13 branched from a position downstream of the pressure reducing valve 12 of the water supply pipe 10 is connected to each of the mixing valves 71 to 74. Then, the hot water from the hot water storage tank 20 is mixed with the water from the water source by the terminal mixing valves 71 and 73 so that the predetermined hot water supply temperature for the hot water supply terminals 4A and 4B is reached, and the hot water storage tank 20 by the bath mixing valves 72 and 74. Is mixed with water from a water source so that the hot water from the water reaches a predetermined bath hot water temperature for the bathtubs 5A and 5B.

  Specifically, the 1st terminal hot water supply path 3a and the 2nd terminal hot water supply path 3c are the 1st hot water pipes 31 and 35 which connect the hot water storage tank 20 and the terminal mixing valves 71 and 73, the terminal mixing valves 71 and 73, and the hot water supply. It has 1st hot-water supply pipes 32 and 36 which connect terminal 4A, 4B. The first hot water supply pipes 32 and 36 are provided with terminal temperature sensors 91 and 93 for detecting the temperature of the hot water flowing through the first hot water supply pipes 32 and 36.

  On the other hand, the 1st bath hot water supply path 3b and the 2nd bath hot water supply path 3d are the 2nd hot water pipes 33 and 37 which connect the hot water storage tank 20 and the bath mixing valves 72 and 74, the bath mixing valves 72 and 74, and the bathtubs 5A and 5B. Are connected via secondary flow passages 51 and 53, which will be described later. The second hot water supply pipes 34 and 38 are provided with bath temperature sensors 92 and 94 for detecting the temperature of hot water flowing through the second hot water supply pipes 34 and 38. The second hot water supply pipes 34 and 38 are provided with solenoid valves 75 and 76 on the downstream side of the bath temperature sensors 92 and 94, respectively.

  In the example shown in FIG. 1, in the vicinity of the hot water storage tank 20, the first outlet pipe 31 and the second outlet pipe 33 on the first household side merge to form one pipe, and the first outlet on the second household side. The tapping pipe 35 and the second tapping pipe 37 merge to form a single pipe, but the first tapping pipes 31 and 35 merge to form a single pipe, and the second tapping pipes 33 and 37 meet. May join to form a single tube. Alternatively, all the hot water extraction pipes 31, 33, 35, and 37 may be joined to form a single pipe. Moreover, in the example shown in FIG. 1, although the pressure relief valve 29 is provided in the branch pipe 28 branched from the 2nd hot water pipe 33 of the 1st household side, the position which provides the pressure relief valve 29 can be changed suitably. is there.

  Furthermore, the hot water storage tank unit 2 has a configuration for performing a reheating operation in which the hot water in the bathtubs 5A and 5B is circulated and heated again. Specifically, the hot water storage tank unit 2 includes primary flow passages 24 and 26 for circulating hot water in the hot water storage tank 20, secondary flow passages 51 and 53 for circulating hot water in the bathtubs 5A and 5B, and a primary flow passage. Bath heat exchangers 55 and 56 for exchanging heat between hot water flowing through the flow passages 24 and 26 and hot water flowing through the secondary flow passages 51 and 53 are provided.

  One end of the primary flow passages 24 and 26 is connected to the upper portion of the hot water storage tank 20 via the first hot water supply passage 3A or the second hot water supply passage 3B, and the other end is directly connected to the lower portion of the hot water storage tank 20. In the middle of 24 and 26, reheating pumps 25 and 27 are provided. On the other hand, both ends of the secondary flow passages 51 and 53 are connected to the bathtubs 5A and 5B, and bath pumps 52 and 54 are provided in the middle of the secondary flow passages 51 and 53, respectively. The secondary flow passages 51 and 53 are provided with reheating temperature sensors 95 and 96 for detecting the temperature of hot water flowing through the secondary flow passages 51 and 53 upstream of the bath pumps 52 and 54. The second hot water supply pipes 34 and 38 described above are connected to the downstream side of the bath pumps 52 and 54.

  The control means 8 is configured by a microcomputer or a DSP (digital signal processor). And the control means 8 is based on the temperature etc. which were detected with the various temperature sensors 90-97 mentioned above according to the program memorize | stored previously, the heat pump unit 1, the mixing valves 71-74, and the various pump 11 mentioned above. , 23, 25, 27, 52, 54 are controlled. The first operating terminal 6A and the second operating terminal 6B are connected to the control means 8 so that they can communicate with each other by wire or wirelessly.

  The first operation terminal 6A and the second operation terminal 6B can each independently set the terminal hot water temperature and the bath hot water temperature in the corresponding household. That is, the first operating terminal 6A can set the terminal hot water temperature and the bath hot water temperature in the first household, and the second operating terminal 6B can set the terminal hot water temperature and the bath hot water temperature in the second household. It has become. Each of the first operation terminal 6A and the second operation terminal 6B includes a kitchen remote controller (first remote controller) 6a installed in a kitchen or a bathroom outside the bathroom, and a bath remote controller (second remote controller installed in the bathroom). ) 6b. The terminal hot water supply temperature can be set by either the kitchen remote controller 6a or the bath remote controller 6b, and the bath hot water temperature can be set by the bath remote controller 6b. It is also possible to set the bath hot water temperature using the kitchen remote controller 6a.

  Specifically, as shown in FIG. 3A, the kitchen remote controller 6a includes a display unit 61 and an input unit 62 including a menu button 62a, a change button 62b, and a confirm button 62c. In addition, the kitchen remote controller 6a is provided with a bath automatic switch 63a that starts filling the bathtubs 5A and 5B and a call switch 63b that starts a call. Further, the kitchen remote controller 6a has a built-in microphone and a speaker 64.

  By pressing the menu button 62a, the user can set the terminal remote controller 6a in a state in which the terminal hot water supply temperature can be set, and by operating the change button 62b in this state, the terminal hot water supply temperature is set to a desired temperature ( Usually, the maximum temperature can be set to 60 ° C.). The set terminal hot-water supply temperature is displayed on display unit 61 and display unit 65 of bath remote controller 6b described later.

  Further, the display unit 61 also displays the amount of remaining hot water in the hot water storage tank 20 as determined by the control means 8 from the temperature detected by the hot water storage temperature sensor 90.

  On the other hand, as shown in FIG. 3B, the bath remote controller 6b has a display unit 65 and an input unit 66 including a menu button 66a, a change button 66b, and a confirm button 66c, as with the kitchen remote controller 6a. ing. Further, the bath remote controller 6b is provided with a bath automatic switch 67a that starts filling the bathtubs 5A and 5B, a chasing switch 67b that starts chasing, and a call switch 67c that starts talking. Further, the bath remote controller 6b has a built-in microphone and a speaker 68.

  By pressing the menu button 66a, the user can set the bath remote controller 6b in a state in which the terminal hot water supply temperature can be set. In this state, the user can operate the change button 66b in the same manner as the kitchen remote controller 6a. The temperature can be set to a desired temperature. The set terminal hot water supply temperature is displayed on the display unit 65 and the display unit 61 of the kitchen remote controller 6a described above.

  In addition, the user can set the bath remote controller 6b to a state in which the bath hot water temperature can be set by pressing the menu button 66a, and the bath hot water temperature can be set to a desired value by operating the change button 66b in this state. The temperature can be set (usually about 32 to 48 ° C.). The set bath hot water temperature is displayed on the display unit 65.

  Further, the user can make the bath remote controller 6b in a state where the reheating temperature can be set by pressing the menu button 66a. By operating the change button 66b in this state, the bath remote controller 6b can be set. The reheating temperature can be set to a desired temperature (usually about 32 to 48 ° C.) individually. The set reheating temperature is displayed on the display unit 65.

  Next, main control performed by the control means 8 will be described in detail.

<Boiling operation>
When the control means 8 grasps the amount of hot water in the hot water storage tank 20 from the temperature detected by the hot water storage temperature sensor 90 and determines that the required amount of hot water does not remain in the hot water storage tank 20, the appropriate timing is obtained. The heat pump unit 1 and the boiling pump 23 are operated (for example, in the evening before the amount of hot water used increases, near dawn in the middle of the night when the electricity rate is low). As for the boiling pump 23, the rotation speed is adjusted so that the temperature detected by the boiling temperature sensor 97 becomes a predetermined boiling temperature. As a result, hot water having a predetermined boiling temperature is stored in the hot water storage tank 20 from above. When the control means 8 determines that the required amount of hot water has been stored in the hot water storage tank 20, the heat pump unit 1 and the boiling pump 23 are stopped and hot water generation means 15 generates hot water (boiling). Exit.

<Terminal hot water operation>
When the hot water taps of the hot water supply terminals 4A and 4B are opened, the control means 8 mixes the terminals so that the temperature detected by the terminal temperature sensors 91 and 93 becomes the terminal hot water temperature set by the kitchen remote control 6a or the bath remote control 6b. The valves 71 and 73 are controlled to adjust the mixing ratio of hot water from the hot water storage tank 20 and water from the water source. Thereby, the hot water from the hot water storage tank 20 is supplied to the hot water supply terminal 4A of the first household after being adjusted to the terminal hot water temperature set by the first operation terminal 6A, and the hot water storage terminal 4B of the second household is supplied with the hot water storage terminal 4B. Hot water from the tank 20 is adjusted to the terminal hot water supply temperature set by the second operation terminal 6B and supplied. When the hot water tap is closed, the hot water supply to the hot water supply terminals 4A and 4B is completed.

<Water filling operation>
When the automatic bath switches 63a and 67a of the kitchen remote control 6a or the bath remote control 6b are pressed, the control means 8 opens the electromagnetic valves 75 and 76 and the temperature detected by the bath temperature sensors 92 and 94 is set by the bath remote control 6b. The bath mixing valves 72 and 74 are controlled so as to achieve the bath hot water supply temperature, and the mixing ratio of the hot water from the hot water storage tank 20 and the water from the water source is adjusted. Thereby, hot water from the hot water storage tank 20 is supplied to the bathtub 5A of the first household after being adjusted to the bath hot water temperature set by the first operation terminal 6A, and the hot water storage tank 20 is supplied to the bathtub 5B of the second household. The hot water from is adjusted to the bath hot water temperature set by the second operation terminal 6B and supplied. Thereafter, when the water level detected by a water level sensor (not shown) provided in the secondary flow passages 51 and 53 reaches a predetermined bath water level, the control means 8 closes the electromagnetic valves 75 and 76 to close the bath 5A, Finish filling with water to 5B.

<Casting driving>
When the reheating switch 67b of the bath remote controller 6b is pressed, the control means 8 operates the reheating pumps 25 and 27 and the bath pumps 52 and 54. Thereafter, when the temperature detected by the reheating temperature sensors 95 and 96 reaches the reheating temperature set by the bath remote controller 6b, the control means 8 stops the reheating pumps 25 and 27 and the bath pumps 52 and 54. Let the chasing end.

  Next, the call functions of the kitchen remote control 6a and the bath remote control 6b of the first operation terminal 6A and the kitchen remote control 6a and the bath remote control 6b of the second operation terminal 6B will be described in more detail.

  In each of the first operation terminal 6A and the second operation terminal 6B, the kitchen remote control 6a and the bath remote control 6b are connected via the control means 8 so as to be able to talk to each other. That is, from one of the kitchen remote controller 6a and the bath remote controller 6b, an electrical audio signal converted from sound by a microphone is transmitted via the control means 8, and the electrical audio signal received on the other side is the speaker 64 (or 68). ) Is converted to sound again. When the user presses the call switch 63b of the kitchen remote control 6a or the call switch 67c of the bath remote control 6b, an electric voice signal can be transmitted and received between the kitchen remote control 6a and the bath remote control 6b in the same household. As a result, a call can be made inside or outside the bathroom of the first household or inside or outside the bathroom of the second household.

  Furthermore, in this embodiment, the bath remote control 6b of the first operation terminal 6A and the kitchen remote control 6a of the second operation terminal 6B are connected via the control means 8 so as to be able to talk to each other. In the kitchen remote controller 6a of the second operation terminal 6B, the bath remote controller 6b of the first operation terminal 6A can be selected as a call destination by pressing the menu button 62a. In the bath remote controller 6b of the first operation terminal 6A, the kitchen remote controller 6a of the second operation terminal 6B can be selected as a call destination by pressing the menu button 66a. When one of the above selections is made and the call switch 63b (or 67c) is pressed, a call can be made between the kitchen remote control installation location of the second household and the bathroom of the first household. .

  That is, in this embodiment, it is possible to check the safety during bathing by calling into the bathroom of the first household from the kitchen remote control installation location of the second household, and what is in the bathroom of the first household. If it happens, you can make an emergency call to the second household. For this reason, when there is an accident in the first household, it can be recognized early, and the second household can respond quickly.

  Here, the kitchen remote controller 6a of the second operation terminal 6B has a recording unit (not shown) for storing the received electrical audio signal, and a predetermined time has elapsed since the kitchen remote controller 6a received the electrical audio signal. The electric sound signal stored in the recording unit is deleted when operated, and the electric sound signal stored in the recording unit when the kitchen remote controller 6a is not operated within a predetermined time after receiving the electric sound signal. It is preferable to be configured to leave Then, the display unit 61 displays that the electrical audio signal remains in the recording unit. In this way, if there was an emergency call from the first household while the second household was away, something was in the first household by looking at the display 61 when the second household came home Can be understood instantly. Moreover, if an electrical audio signal is left in the recording unit, it is possible to grasp the contents of the emergency contact.

  In addition, this invention is not limited to the said embodiment described above, A various deformation | transformation is possible.

  For example, the kitchen remote control 6a of the second operation terminal 6B may be connected to the kitchen remote control 6a of the first operation terminal 6A via the control means 8 so as to be able to communicate with each other. In this case, the kitchen remote controller 6a of the first operation terminal 6A can select the kitchen remote controller 6a of the first operation terminal 6B as a call destination by pressing the menu button 62a, and the kitchen remote controller 6a of the second operation terminal 6B can select it. By pressing the menu button 62a, the bath remote controller 6b or the kitchen remote controller 6a of the first operation terminal 6A can be selected as a call destination. In this way, it becomes possible to make a call between the kitchen remote control installation location of the first household and the kitchen remote control installation location of the second household, and when a sudden illness or incident occurs in the first household, the second household immediately Will be able to contact you. In addition, when there is a business other than emergency contact, the first household and the second household can easily communicate with each other. In this case, if there is a recording section described above, this recording section can be used as a simple message means.

  Further, the bath remote control 6b of the second operation terminal 6B and the kitchen remote control 6a of the first operation terminal 6B may be connected to each other via the control means 8 so that they can communicate with each other, or the bath remote control of the second operation terminal 6B. 6b and the bath remote controller 6b of the first operating terminal 6A may be connected to each other via the control means 8 so as to be able to talk to each other.

  Alternatively, only the kitchen remote control 6a of the first operation terminal 6A and the kitchen remote control 6a of the second operation terminal 6B may be connected to each other via the control means 8 so as to be able to talk to each other.

  Furthermore, an information output means for outputting information in the bathroom is provided in the bath remote controller 6b of the first operation terminal 6A, and an information display for displaying information output from the information output means on the kitchen remote control 6a of the second operation terminal 6B Means may be provided. For example, it is conceivable to use an infrared sensor for detecting the presence of a person in the bathroom as the information output means, and to use a lamp that is turned on when there is a person in the bathroom as the information display means. In this way, the second household will know that there is a person in the bathroom of the first household, that is, someone in the first household is taking a bath. I can inform you.

  By the way, in the case of an infrared sensor as the information output means, if a person is stationary in the bathroom, the person may not be detected. Therefore, it is preferable to use a video camera for photographing the inside of the bathroom as the information output means. In this case, for example, a liquid crystal monitor can be used as the information display means. The display unit 61 of the kitchen remote controller 6a can also serve as information display means. If it does in this way, in addition to the above-mentioned effect, the situation in a bathroom can be grasped now visually.

  Furthermore, when the information output means is provided, it is preferable to provide an information stop means for stopping the output of information from the information output means in the bath remote controller 6b of the first operation terminal 6A in order to protect privacy. As such information stop means, an information stop switch may be separately provided in the bath remote controller 6b, or the input unit 66 may stop outputting information from the information output means by pressing the menu button 66a. It is also possible to configure information stop means.

  In addition, the kitchen remote control 6a or the bath remote control 6b of the second operation terminal 6B may be provided with an operation disable switching means for making the kitchen remote control 6a and the bath remote control 6b of the first operation terminal 6A inoperable. This inoperable switching means may be constituted by a separately provided changeover switch or may be constituted by the input unit 62 (or 66). If it does in this way, when the 1st household is an elderly household, the misoperation by an elderly household can be prevented, and safety can be improved.

  Furthermore, the kitchen remote controller 6a and the bath remote controller 6b of the first operation terminal 6A may be remotely controlled by the kitchen remote controller 6a or the bath remote controller 6b of the second operation terminal 6B. In this way, for example, when the hot water supply device 100 is shared between the parent household and the child household, the child household that is surely operated can manage the setting status, and safety and convenience are improved.

  Furthermore, in the said embodiment, although the hot-water supply apparatus 100 for two households for two-family houses was shown, in order to make the hot-water supply apparatus for multiple households more than three households for collective housing, hot water supply path 3A, 3B and operation What is necessary is just to increase the number of terminals 6A and 6B according to the number of households. In this case, it is only necessary that the operation terminals are connected to each other between at least two specific households, and three or more operation terminals may be connected to each other via the control unit 8 so as to be able to talk to each other.

  In addition to the heat pump unit 1, an electric heater, a gas combustion device, or the like may be employed as the heating body that heats the water in the hot water storage tank 20.

It is a schematic structure figure of a hot-water supply device concerning one embodiment of the present invention. It is a schematic block diagram of the heat pump unit in the hot water supply apparatus of FIG. (A) is a front view of a kitchen remote control, (b) is a front view of a bath remote control. It is a schematic block diagram of the conventional hot water supply apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Heat pump unit 1a Refrigerant circuit 1b Compressor 1c High pressure side heat exchanger 1d Expansion means 1e Low pressure side heat exchanger 15 Hot water production | generation means 2 Hot water storage tank unit 20 Hot water storage tank 21 Water supply pipe 22 Hot water supply pipe 23 Boiling pump 3A 1st hot water supply Road 3B Second hot water supply path 3a First terminal hot water supply path 3b First bath hot water supply path 3c Second terminal hot water supply path 3d Second bath hot water supply path 4A, 4B Hot water supply terminal 5A, 5B Bathtub 6A First operation terminal 6B Second operation terminal 6a Kitchen remote control (first remote control)
6b Bath remote control (second remote control)
61, 65 Display unit 62, 66 Input unit 71 Terminal mixing valve (first mixing valve)
72 Bath mixing valve (first mixing valve)
73 Terminal mixing valve (second mixing valve)
74 Bath mixing valve (second mixing valve)
8 Control means

Claims (15)

A hot water supply device for a plurality of households including at least a first household and a second household,
A hot water storage tank to which water is supplied at the bottom;
Hot water generating means for heating the water extracted from the lower part of the hot water storage tank into hot water and returning the hot water to the upper part of the hot water storage tank;
A first hot water passage and a second hot water passage for guiding hot water stored in the hot water storage tank to the first household and the second household, respectively;
A first mixing valve and a second mixing valve which are disposed in each of the first hot water supply path and the second hot water supply path and mix hot water from the hot water storage tank with water so as to have a predetermined hot water supply temperature;
A first operation terminal capable of setting the hot water supply temperature in the first household and a second operation terminal capable of setting the hot water supply temperature in the second household;
Control means for controlling the hot water generating means and the first mixing valve and the second mixing valve;
The hot water supply apparatus, wherein the first operation terminal and the second operation terminal are connected so as to be able to talk to each other via the control means.   Each of the first operation terminal and the second operation terminal is composed of a first remote control installed outside the bathroom and a second remote control installed inside the bathroom, and the second operation terminal of the first operation terminal. 2. The hot water supply apparatus according to claim 1, wherein a remote controller and the first remote controller of the second operation terminal are connected to each other via the control unit so as to be able to talk to each other.   The hot water supply apparatus according to claim 2, wherein the first remote controller of the second operation terminal is connected to the first remote controller of the first operation terminal so as to be able to communicate with each other via the control means.   The hot water supply apparatus according to claim 2 or 3, wherein the first remote controller of the second operation terminal includes a recording unit that stores a received audio signal.   The first remote controller of the second operation terminal deletes the audio signal stored by the recording unit when the first remote controller is operated within a predetermined time after receiving the audio signal, and the first remote controller The hot water supply apparatus according to claim 4, wherein the audio signal stored by the recording unit is left when the audio signal is not operated within a predetermined time after receiving the audio signal.   The hot water supply apparatus according to claim 5, wherein the first remote controller of the second operation terminal includes a display unit, and the display unit displays that an audio signal remains in the recording unit.   The second remote control of the first operation terminal is provided with information output means for outputting information in the bathroom, and the first remote control of the second operation terminal is output from the information output means The hot-water supply apparatus as described in any one of Claims 2-6 in which the information display means to display information is provided. The hot water supply apparatus according to claim 7, wherein the second remote controller of the first operation terminal is provided with an information stop unit that stops outputting information from the information output unit.   The hot water supply apparatus according to claim 7 or 8, wherein the information output means is an infrared sensor for detecting that a person is in the bathroom.   The hot water supply apparatus according to claim 7 or 8, wherein the information output means is a video camera for photographing a bathroom.   The first remote control or the second remote control of the second operation terminal is provided with an inoperability switching means for disabling the first remote control and the second remote control of the first operation terminal. The hot water supply device according to any one of 2 to 10.   11. The first remote controller or the second remote controller of the second operation terminal is capable of remotely operating the first remote controller and the second remote controller of the first operation terminal. The hot water supply device described in 1. Each of the first hot water supply path and the second hot water supply path includes a terminal hot water supply path that supplies hot water stored in the hot water storage tank to a hot water supply terminal, and a bath that supplies hot water stored in the hot water storage tank to the bathtub. Including hot water supply path,
Each of the first mixing valve and the second mixing valve is disposed in the terminal hot water supply passage, and mixes the hot water from the hot water storage tank with water so as to have a predetermined terminal hot water supply temperature for the hot water supply terminal. A mixing valve and a bath mixing valve that is disposed in the bath hot water supply channel and mixes the hot water from the hot water storage tank with water so as to have a predetermined bath hot water temperature for the bathtub;
The first operation terminal can set the terminal hot water supply temperature and the bath hot water temperature in the first household, and the second operation terminal can set the terminal hot water temperature and the bath hot water temperature in the second household. The hot water supply device according to any one of claims 1 to 12, which can be set.   The hot water generation means includes a heat pump unit having a refrigerant circuit in which a compressor, a high pressure side heat exchanger, an expansion means, and a low pressure side heat exchanger are sequentially connected, the high pressure side heat exchanger, and a lower part of the hot water storage tank. A water supply pipe connecting the high pressure side heat exchanger and the upper part of the hot water storage tank, and a pump provided in the water supply pipe or the hot water supply pipe. The hot water supply device according to any one of 13.   The hot water supply device according to claim 14, wherein the heat pump unit uses carbon dioxide as a refrigerant.

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