JP5343828B2 - Hot water storage water heater - Google Patents

Description

  The present invention relates to a hot water storage type water heater.

  Conventionally, for example, in Patent Document 1, a hot water supply pipe for supplying hot water from the upper part of the hot water storage tank to the outside of the machine and a boil-up return pipe for returning the high temperature water heated by the heat pump unit to the upper part of the hot water storage tank are separately provided. There is disclosed a heat pump type water heater connected to the upper part of a hot water storage tank via a connection port. For example, Patent Document 2 discloses a technique for delivering a plurality of fluids without mixing them in a configuration using a pipe joining member having a plurality of independent flow paths.

JP 2009-168298 A JP-A-9-243179

  As shown in Patent Document 1, in the conventional heat pump type water heater, when the hot water supply operation and the boiling operation are performed at the same time, the fluids flowing through both the hot water supply pipe and the boiling return pipe do not affect each other. Therefore, it is necessary to separately connect a plurality of pipes connected to the upper part of the hot water storage tank to the hot water storage tank. For this reason, in the conventional heat pump type hot water heater, the material cost and the processing cost of the piping connection port of piping and a hot water storage tank arise extra, and there existed a subject that cost became high.

  The present invention has been made to solve the above-described problems, and suppresses deterioration in performance due to fluids flowing through each of a plurality of fluid pipes guided to a hot water storage tank, while preventing the plurality of fluids. It is an object of the present invention to provide a hot water storage type hot water heater that can connect a pipe to a pipe connection port provided in a hot water storage tank.

  The hot water storage type water heater according to the present invention is interposed between a hot water storage tank for storing hot water, a plurality of fluid pipes led to the hot water storage tank and the hot water storage tank, and independent of each of the plurality of fluid pipes. A fluid coupling having a plurality of flow paths therein, and the fluid coupling includes a partition plate that separates the plurality of flow paths from each other.

  According to the present invention, a plurality of fluid pipes are connected to a single pipe provided in the hot water storage tank while suppressing performance degradation caused by the fluid flowing through each of the multiple fluid pipes guided to the hot water storage tank affecting each other. It becomes possible to connect to the mouth.

1 is an overall configuration diagram of a hot water storage type water heater in Embodiment 1 of the present invention. It is a system configuration | structure figure of the hot water storage type water heater in Embodiment 1 of this invention. It is an external appearance perspective view of the integrated joint in Embodiment 1 of this invention. It is front sectional drawing of the integrated joint in Embodiment 1 of this invention. FIG. 5 is a cross-sectional view when the integrated joint 20 is cut at a position of a cross-section BB shown in FIG. 4 and viewed from the direction of arrow A in FIG. 3. It is a top view which shows the structure of the upper part of the hot water storage tank to which the integrated joint was attached. It is DD sectional drawing (A) and CC sectional drawing (B) which respectively show the structure of the upper part of the hot water storage tank to which the integrated joint was attached. It is a lower surface external view when an integrated joint is seen from the arrow A direction shown in FIG. It is front sectional drawing of the integrated joint in Embodiment 2 of this invention.

Embodiment 1 FIG.
FIG. 1 is an overall configuration diagram of a hot water storage type hot water supply apparatus according to Embodiment 1 of the present invention. As shown in FIG. 1, the hot water storage type water heater of the present embodiment includes a tank unit 1 and a heat pump unit 60. These two units 1 and 60 are connected by a boiling forward pipe 5 and a boiling return pipe 6. The heat pump unit 60 is a heat source for absorbing low-temperature water supplied from the tank unit 1 by absorbing atmospheric heat into the refrigerant by a refrigeration cycle to be described later.

  The tank unit 1 supplies high-temperature water to the water supply pipe 2 for supplying water from the water source to the water heater, and to the outside of the water heater, in addition to the above-described boiling forward pipe 5 and boiling back pipe 6. For this purpose, a hot water supply pipe 3 and a bath water circulation pipe 71 are connected. The tank unit 1 stores water supplied from the water supply pipe 2 and also stores a hot water storage tank 10 (see FIG. 2), various pipes, various valves, and sensors for storing high-temperature water heated by the heat pump unit 60. A control device (both not shown) is built in and covered with an outer case 1A for housing them. When a user of the hot water heater opens one of the hot water taps 4 provided one or more, the hot water stored in the hot water heater is pushed out by the pressure of the water source. Thereby, supply of high temperature water can be received from the hot water supply port 4A. In addition, this hot water heater can use hot water stored in a hot water storage tank 10 to be described later to adjust the temperature of hot water stored in the bathtub 70 to an arbitrary temperature according to a user's request. It is.

  FIG. 2 is a system configuration diagram of the hot-water storage type water heater in Embodiment 1 of the present invention. In addition, illustration and description are abbreviate | omitted about the other components which are not related to this invention. As shown in FIG. 2, the heat pump unit 60 includes a compressor 61, a heating heat exchanger 62, an expansion valve 63, and an air heat exchanger 64 that are annularly connected by a refrigerant circulation pipe 65 to constitute a refrigeration cycle. ing. The boiling heat exchanger 62 is for exchanging heat between the refrigerant flowing through the refrigerant circulation pipe 65 constituting the refrigeration cycle and the low-temperature water led from the tank unit 1. The heat pump (HP) outlet-side thermistor 66 is a sensor for detecting the temperature of the high-temperature water heated by the boiling heat exchanger 62 and controlling the operating state of the heat pump unit 60. It is provided above. In order to obtain high-temperature water by the heat pump unit 60, it is preferable that the refrigeration cycle is operated at a pressure exceeding the critical pressure using carbon dioxide as a refrigerant.

  The control device 36 is a device for operating various valves and pumps based on information such as detection values by various sensors of the hot water heater and preset operation conditions, and this control can be performed according to a user's request. It is an apparatus for enabling various types of control of the water heater. The control device 36 and various valves, pumps, and sensors are connected by an internal wiring 36A.

  The hot water storage tank 10 is provided with a plurality of connection ports for connecting pipes. More specifically, the water supply pipe 2 and the boiling forward pipe 5 are respectively connected to a water supply connection port 11 and an HP forward side connection port 12 provided in the lower part of the hot water storage tank 10. The hot water supply pipe 3 and the boil-up return pipe 6 are connected to an upper connection port 13 of the hot water storage tank 10 provided on the upper part of the hot water storage tank 10 via an integrated joint (fluid joint) 20.

  The pressure reducing valve 8 reduces the pressure applied from the water source into the hot water heater to a certain level or less. The relief valve 9 is a safety valve for preventing the pressure in the water heater from rising due to volume expansion that occurs when low-temperature water is heated by the boiling operation. Is discharged to the outside of the heat pump type hot water heater, and is adjusted so that the pressure in the hot water storage tank 10 is below a certain level. The remaining hot water thermistor 19 is a plurality of sensors provided on the surface of the hot water storage tank 10 at different heights, and detects the temperature of the hot water in the hot water storage tank 10. The temperature information detected by the remaining hot water thermistor 19 is processed by the control device 36 to grasp the amount of hot water in the hot water storage tank 10 and start / stop of the hot water boiling operation in the hot water storage tank 10 by the heat pump unit 60. Used to control etc. The boiling circulation pump 7 is a pump for circulating hot water between the tank unit 1 and the heat pump unit 60, and is provided on the boiling forward piping 5.

  The remedy heat source pipe 16 is connected to a remedy outgoing connection port 14 of the hot water storage tank 10 provided in the upper part of the hot water storage tank 10 and a remedy return connection port 15 of the hot water storage tank 10 provided in the lower part of the hot water storage tank 10. A tubular circulation path including the hot water storage tank 10 (hereinafter referred to as “regenerative heat source circulation path”) is configured. A memorial circulation pump 18 and a memorial heat exchanger 17 are provided on the memorial heat source pipe 16. The memorial circulation pump 18 is a pump provided on the memorial heat source pipe 16 and circulates hot water through the memorial heat source circulation path. The memorial heat exchanger 17 has two flow paths on the primary side and the secondary side, and transfers the heat of the high-temperature water supplied to the primary side to the low-temperature water supplied to the secondary side to raise the temperature. This is a heat exchanger. Here, the high temperature water led from the hot water storage tank 10 is supplied to the primary side, and the low temperature water in the bathtub led to the secondary side is heated. The bath water circulation pipe 71 is a circulation path (hereinafter referred to as “bath water circulation path”) that returns from the bathtub 70 to the bathtub 70 via the secondary side of the bath water circulation thermistor 73, the bath water circulation pump 72, and the memorial heat exchanger 17. ) Is a pipe for constituting. The bath water circulation pump 72 is a pump for circulating bath water in the bath water circulation path, and the bath water circulation thermistor 73 is a sensor for detecting the temperature of the bath water flowing through the bath water circulation path.

  Next, the operation during the boiling operation will be described. When the control device 36 determines that the boiling operation is necessary, first, the operation of the circulating pump 7 for boiling is started, and the hot water storage tank 10 → the hot water connection port 12 of the hot water storage tank → the boiling water piping 5 → the water heating. The water circulates through a path of the heat exchanger 62 for heating → the heating return pipe 6 → the integrated joint 20 → the upper connection port 13 of the hot water storage tank → the hot water storage tank 10. At the same time, the operation of the compressor 61 is started in the heat pump unit 60, and the refrigerant circulation operation is performed in the path of the compressor 61 → the heating heat exchanger 62 → the expansion valve 63 → the air heat exchanger 64 → the compressor 61. Done. By these two circulation operations, the low temperature water introduced from the lower part of the hot water storage tank 10 comes into contact with the refrigerant having a high temperature through the boiling heat exchanger 62, becomes high temperature water, and is returned to the upper part of the hot water storage tank 10. In the hot water storage tank 10, low temperature water flows out from the lower part of the hot water storage tank 10, and high temperature water flows in from the upper part, so that hot water is stored so that a temperature difference occurs between the upper part and the lower part in the hot water storage tank 10. In order to effectively use the high-temperature water in the hot water storage tank 10, it is important to store hot water so that a temperature difference always occurs between the upper part and the lower part.

  Next, the temperature rising operation of the bath water will be described. When the controller 36 determines that the bath water temperature raising operation is necessary, first, the operation of the memory circulation pump 18 and the bath water circulation pump 72 is started. In the memorial circulation route, the hot water storage tank 10 → the hot water tank retreat connection port 14 → the memorial heat exchanger 17 (primary side) → the memorial circulation pump 18 → the hot water recuperation return connection port 15 → the hot water storage tank The circulation operation of the high-temperature water in the hot water storage tank 10 is performed by 10 routes. As a result, the high temperature water supplied from the hot water storage tank 10 to the memory heat exchanger 17 is deprived of heat by the memory heat exchanger 17 to become low temperature water, and the hot water storage tank 15 is connected to the hot water storage tank 10 through the recuperation return connection port 15. 10 is returned to the bottom. On the other hand, in the bath water circulation path, the bath water circulation operation is performed in the path of bath 70 → bath water circulation thermistor 73 → replacement heat exchanger 17 (secondary side) → tub 70. Thereby, the low-temperature bath water supplied from the bathtub 70 to the follow-up heat exchanger 17 is heated by the follow-up heat exchanger 17 and returned to the bathtub 70. By continuing these two circulation operations until the bath water circulation thermistor 73 detects a predetermined temperature, it is possible to raise the temperature of the bath water stored in the bathtub 70.

  Next, with reference to FIGS. 3-8, the structure of the integrated joint 20 of this embodiment is demonstrated. FIG. 3 is an external perspective view of the integrated joint 20 according to Embodiment 1 of the present invention. As shown in FIG. 3, the integrated joint 20 includes a hot water supply pipe connection portion 21 connected to the hot water supply pipe 3, a boiling return pipe connection portion 22 connected to the boiling return pipe 6, and hot water storage connected to the hot water storage tank 10. There are three connection parts, tank connection part 25. With such a configuration, the integrated joint 20 is interposed between the two fluid pipes 3 and 6 and the hot water storage tank 10.

  FIG. 4 is a front sectional view of the integrated joint 20 according to Embodiment 1 of the present invention. As shown in FIG. 4, the hot water supply pipe connection portion 21 is constituted by a pipe fixing portion 21A and a concave portion 21B, and similarly, the heated return pipe connection portion 22 is constituted by a pipe fixing portion 22A and a concave portion 22B. Has been. By inserting the pipes 3 and 6 into the respective recesses 21B and 22B, the fluid pipes 3 and 6 and the integrated joint 20 are fixed using the pipe fixing parts 21A and 22A. Moreover, the hot water storage tank connection part 25 includes a pipe fixing part 25A, an insertion guide part 25B, a packing groove 25C, and the like. The integrated joint 20 is connected to the hot water storage tank 10 by using the protrusion of the pipe fixing portion 25A by inserting the insertion guide portion 25B into the concave portion of the upper connection port 13 provided in the hot water storage tank 10. The packing groove 25 </ b> C is a groove for fixing a packing 25 </ b> D (see FIG. 7B) that is installed to prevent water leakage from the hot water storage tank connection portion 25. Moreover, the hot water supply pipe connection part 21 and the boil-up return pipe connection part 22 are configured so that the diameters of connectable pipes are different by changing the diameter of the recess. Thereby, it is possible to prevent erroneous attachment of the fluid pipes 3 and 6.

  As shown in FIG. 4, the integrated joint 20 includes two flow paths 41 and 42 that are independent for the two fluid pipes 3 and 6, respectively. More specifically, the hot water supply side channel 41 is a channel for supplying hot water from the hot water storage tank 10 to the hot water supply pipe 3, and the boiling side channel 42 stores hot water heated by the heat pump unit 60. A flow path for returning to the tank 10. The integrated joint 20 includes a partition plate 30 for separating the two flow paths 41 and 42 from each other. As shown in FIGS. 3 and 4, the partition plate 30 extends toward the inner side of the hot water tank 10 (downward in FIG. 4) with respect to the hot water tank connecting portion 25 (hot water tank side connection port) in the integrated joint 20. The extended portion 30A is provided. In addition, the integrated joint 20 includes a flow dividing plate 31 provided to extend to each of the short side surfaces (hereinafter referred to as “short side surfaces”) of the extending portion 30 </ b> A of the partition plate 30. The flow dividing plate 31 is a member for preventing the flow of fluid (hot water) from one side to the other side of the two flow paths 41 and 42 partitioned by the partition plate 30.

  5 is a cross-sectional view when the integrated joint 20 is cut at the position of the cross-section BB shown in FIG. 4 and viewed from the direction of arrow A in FIG. As shown in FIG. 5, it can be seen that the hot water supply side channel 41 and the boiling side channel 42 are completely separated in the integrated joint 20 by the partition plate 30. Further, the partition position of the flow path in the integrated joint 20 by the partition plate 30 is determined so that the cross-sectional area of the hot water supply-side flow path 41 is larger than the cross-sectional area of the boiling-side flow path 42. It is assumed that the hot water supply side channel 41 is required to circulate hot water in a state where the instantaneous flow rate is larger than that of the boiling side channel 42. Therefore, in the present embodiment, the cross-sectional area of the hot water supply side channel 41 is ensured to be larger than the cross-sectional area of the boiling side channel 42. The cross-sectional area of each flow path may be determined by the instantaneous flow rate required for each flow path, and the same cross-sectional area may be used if the instantaneous flow rates flowing through the respective flow paths are substantially equal.

  FIG. 6 and FIG. 7 are diagrams respectively showing the configuration of the upper part of the hot water storage tank 10 to which the integrated joint 20 is attached. More specifically, FIG. 6 is a top view, FIG. 7A is a DD sectional view shown in FIG. 6, and FIG. 7B is a CC sectional view shown in FIG. As shown in FIG. 6 and FIGS. 7A and 7B, the integrated joint 20 to which the hot water supply pipe 3 and the boil-up return pipe 6 are connected has an upper connection port 13 provided at the upper part of the hot water storage tank 10. Via the hot water storage tank 10.

  Further, as shown in FIGS. 7A and 7B, a baffle plate 32 is provided in the vicinity of the upper connection port 13 in the hot water storage tank 10 so as to surround the partition plate 30 and the flow dividing plate 31 of the integrated joint 20. Is attached. The baffle plate 32 is a member for restricting the flow of hot water entering and leaving the vicinity of the upper connection port 13 and suppressing the momentum of the hot water. The baffle plate 32 is provided so as to face the distal end surface of the extending portion 30A of the partition plate 30 and be close to (or in contact with) the distal end surface. Between the baffle plate 32 and the upper wall surface of the hot water storage tank 10, as shown in FIG. 7B, a hot water supply flow path 34 that leads the hot water in the hot water storage tank 10 to the hot water supply side flow path 41 is formed. Yes. Further, on the opposite side of the hot water supply channel 34 partitioned by the partition plate 30, hot water is supplied from the boiling side channel 42 into the hot water storage tank 10 between the baffle plate 32 and the upper wall surface of the hot water storage tank 10. A leading flow path 35 is formed. The gap 33 is a gap formed by the flow dividing plate 31, the hot water storage tank 10, the upper connection port 13 of the hot water storage tank, and the like, and the baffle plate 32.

  The arrow shown in FIG. 7 (B) shows the flow direction of hot water in a simulated manner. A hot water supply flow direction 51 indicated by a solid line arrow indicates a flow of high temperature water generated when hot water stored in the hot water storage tank 10 is supplied to the hot water tap 4. On the other hand, a boiling flow direction 52 indicated by a broken-line arrow indicates a flow of high-temperature water when the high-temperature water heated by the heat pump unit 60 is stored in the upper part of the hot water storage tank 10. When hot water is supplied through the hot water tap 4, the pressure in the hot water storage tank 10 is released by opening the hot water tap 4. As a result, the hot water in the hot water storage tank 10 is supplied from the hot water storage tank 10 to the hot water supply pipe 3 via the hot water supply flow path 34 in the hot water storage tank and the hot water supply side flow path 41 of the integrated joint 20 (hot water flow direction 51 reference). On the other hand, when the boiling operation by the heat pump unit 60 is started, the high-temperature water heated by the heat pump unit 60 passes through the boiling side flow path 42 of the integrated joint 20 from the boiling return pipe 6 and then baffles. It flows into the hot water storage tank 10 through the boiling flow path 35 in the hot water storage tank along the plate 32 and is stored (see the boiling flow direction 52). Thus, the hot water flowing into the hot water storage tank 10 is restricted by the baffle plate 32 only in the right direction in FIG. Disturbances in the temperature distribution of the hot water in the hot water storage tank 10 can be minimized. In addition, at the time of the simultaneous operation of the hot water supply and the boiling operation, the high temperature water heated by the heat pump unit 60 is converted into the hot water supply water as shown in the vertical direction flow 54 shown by a two-dot chain line in FIG. Due to the dynamic pressure, a flow drawn into the hot water supply side passage 41 is generated. If each of the hot water supply and boiling operations has an influence due to this flow, the baffle plate dimension 32A may be sufficiently long in order to reduce the influence.

  FIG. 8 is a bottom external view of the integrated joint 20 as viewed from the direction of arrow A shown in FIG. As shown in FIG. 8, the flow dividing plate 31 is a portion extending from the short side surface portion of the partition plate 30 to the left and right according to the outer shape of the insertion guide portion 25 </ b> B. Since the partition plate 30 and the flow dividing plate 31 need to be inserted into the hot water storage tank 10, the projected shapes of the partition plate 30 and the flow dividing plate 31 in FIG. 8 are the same or smaller than the outer diameter of the insertion guide portion 25B. If it is good.

  Further, as shown in FIG. 8, the opening 55 (55A, 55B) of the integrated joint 20 viewed from the hot water supply channel 34 or the boiling channel 35 side is formed by two right and left flow dividing plates 31. That is, the high temperature water that has flowed into the hot water supply channel 34 from the hot water storage tank 10 is supplied to the hot water supply side channel 41 of the integrated joint 20 through the opening 55A (hot water supply flow direction 51). On the other hand, the boiling high-temperature water passes through the opening 55B from the boiling-side flow path 42 of the integrated joint 20 and then flows into the hot water storage tank 10 via the boiling flow path 35 (boiling flow direction 52). . Here, the horizontal wraparound flow 53 indicated by a two-dot chain line in FIG. 8 is that hot water flowing into the hot water storage tank 10 from the boiling side flow path 42 of the integrated joint 20 wraps around the flow dividing plate 31 and is on the hot water supply side. The flow of hot water when supplied to the flow path 41 is shown. Since there are many such horizontal sneaking flows 53, both the hot water supply operation and the boiling operation affect each other, and when any of the operations is affected in terms of performance, the gap 33 shown in FIG. What is necessary is just to change the dimension of the baffle board 32 so that it may become.

  As described above, the integrated joint 20 of the present embodiment includes the partition plate 30 including the extending portion 30 </ b> A that extends toward the inner side of the hot water storage tank 10 with respect to the hot water storage tank connection portion 25 (hot water storage tank side connection port). ing. In addition, in each short side surface portion of the extending portion 30A of the partition plate 30, a branch flow that prevents the fluid (hot water) from flowing from one side to the other side of the two flow paths 41 and 42 partitioned by the partition plate 30 is provided. A plate 31 is provided extending. Further, a baffle plate 32 for restricting the flow of hot water entering and leaving the vicinity of the upper connection port 13 of the hot water storage tank 10 to suppress the momentum of the hot water is opposed to the distal end surface of the extending portion 30A of the partition plate 30, and It is provided close to (or in contact with) the front end surface. By providing the partition plate 30, the flow dividing plate 31, and the baffle plate 32 configured as described above, the flow direction of the high-temperature water entering and exiting the hot water storage tank 10 even when the hot water supply and the boiling operation are performed simultaneously. Is limited. For this reason, it can suppress that the high temperature water which flows through the boiling side flow path 42 is directly drawn in to the hot water supply side flow path 41, and it becomes possible to minimize the mutual influence of a boiling operation and a hot water supply operation. As a result, the performance degradation caused by the fluid (hot water) flowing through each of the two fluid pipes (the hot water supply pipe 3 and the boil-up return pipe 6) attached relatively close to the upper part of the hot water storage tank 10 affects each other. It is possible to connect the two hot water supply pipes 3 and the boil-up return pipe 6 to one pipe connection port (upper connection port 13) provided in the hot water storage tank 10 while suppressing. As a result, it is possible to provide a low-cost hot water storage type water heater while suppressing the above-described performance degradation.

Embodiment 2. FIG.
Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 9 is a front sectional view of the integrated joint 80 according to Embodiment 2 of the present invention. In FIG. 9, the same components as those shown in FIG. 4 are denoted by the same reference numerals, and description thereof is omitted. In the first embodiment described above, only one fluid pipe 2 and 6 is connected to each of the independent flow paths 41 and 42 of the integrated joint 20. However, in the fluid joint of the present invention, it is possible to provide a branch in any one or both of the flow paths, and to connect a plurality of fluid pipes and various functional parts.

  As an example of the integrated joint 80 shown in FIG. 9, the hot water supply side flow path 41 of the integrated joint 80 is branched into two hands, and a fourth pipe connection portion 23 is added. If the flow path system piping and various functional parts that are not affected by the hot water supply, specifically, the relief valve 9 or the like, there is no need to use a joint. According to the configuration of the present embodiment, it is possible to directly connect the fluid piping connected to such a relief valve 9 to the integrated joint 80, and to further reduce the cost.

  By the way, in Embodiment 1 and 2 mentioned above, between the two fluid piping (the hot water supply piping 3 and the boiling return piping 6) attached comparatively close to the upper part of the hot water storage tank 10, and the hot water storage tank 10, The integrated joints 20 and 80 are interposed. However, the present invention has a plurality of fluid pipes attached relatively close to any one of the upper, central and lower areas of the hot water storage tank 10, and avoids the hot water flowing through each pipe from affecting each other. This invention is effective when necessary. Therefore, the part where the fluid joint of the present invention is interposed is not limited to the upper part of the hot water storage tank, and may be any part of the central part or lower part of the hot water storage tank, and the same effect can be expected. Moreover, as an example, the hot water storage tank 10 is connected to the hot water supply pipe 3 and the additional heat source pipe 16 or the heated return pipe 6 and the additional heat source pipe 16 via a fluid joint having the same configuration as the integrated joints 20 and 80. It may be connected to the top of the. Further, the water supply pipe 2 and the boiling forward pipe 5 may be connected to the lower part of the hot water storage tank 10 through a fluid joint having the same configuration as the integrated joints 20 and 80. Moreover, the hot water storage type hot water heater of the present invention is not limited to the heat pump unit 60 as a heat source, and can be used for all hot water storage type hot water heaters.

DESCRIPTION OF SYMBOLS 1 Tank unit 3 Hot-water supply piping 4 Hot-water tap 5 Boiling-out piping 6 Boiling-back piping 9 Relief valve 10 Hot water storage tank 13 Upper connection port 16 of a hot water storage tank Heat source piping 20 and 80 Integrated joint 21 Hot-water supply piping connection part 22 Boiling Raised pipe connecting portion 23 Fourth pipe connecting portion 25 Hot water storage tank connecting portion 30 Partition plate 30A Extending portion 31 Diverging plate 32 Baffle plate 34 Hot water flow channel 35 Heating flow channel 36 Controller 41 Hot water supply side flow channel 42 Boiling side Flow path 60 Heat pump unit 70 Bathtub

Claims (8)

A hot water storage tank for storing hot water,
A fluid joint interposed between a plurality of fluid pipes led to the hot water storage tank and the hot water storage tank, and provided with a plurality of independent flow paths for each of the plurality of fluid pipes; and
The hot water storage type hot water heater, wherein the fluid coupling includes a partition plate that separates the plurality of flow paths from each other.   The hot water storage type hot water supply apparatus according to claim 1, wherein the partition plate includes an extending portion extending toward an inner side of the hot water storage tank with respect to a hot water storage tank side connection port in the fluid joint.   A flow dividing plate that is provided to extend to each short side surface portion of the extending portion of the partition plate, and prevents the flow of fluid from one side to the other side of the plurality of flow paths partitioned by the partition plate; The hot water storage type water heater according to claim 2, further comprising: The fluid coupling is disposed at an upper portion of the hot water storage tank;
One of the plurality of fluid pipes is a fluid pipe for guiding hot water heated by a predetermined heating means to an upper part of the hot water storage tank,
4. The hot water storage type hot water heater according to claim 2, wherein another one of the plurality of fluid pipes is a hot water supply pipe for supplying hot water in the hot water storage tank to the outside.   The hot water storage type hot water supply according to any one of claims 2 to 4, further comprising a baffle plate that faces the front end surface of the extending portion of the partition plate and is provided close to the front end surface. Machine.   The hot water storage type hot water supply apparatus according to any one of claims 2 to 5, wherein each of the plurality of flow paths has a different cross-sectional area.   The hot water storage type hot water supply device according to any one of claims 2 to 6, wherein the diameter of each connecting portion of the fluid joint with the plurality of fluid pipes is different. A branch channel branched from at least one of the plurality of channels;
The said branch flow path is connected to the other fluid piping for making the hot water in the said hot water storage tank or water go in and out between the said hot water storage tank and the exterior. The hot water storage water heater described in 1.

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