JP2007232236A - Heat pump water heater - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat pump water heater which improves space efficiency without problems such as poor performance of a heat pump, and downsized as a whole, when constitutional appliances of the heat pump and a hot water storage tank 1 are received in one housing to be unitized. <P>SOLUTION: In this heat pump water heater A wherein a heat exchanger 4 for collecting heat and a blower fan 6 of the heat pump H, and the cylindrical hot water storage tank 2 fully or partially extending in the vertical height direction, are contained in the approximately rectangular parallelepiped housing 1, the heat exchanger 4 for collecting heat is disposed in spaces 11a, 11b formed between a side wall portion of a corner portion of the housing 1 and the hot water storage tank 2 in a state of extending in the vertical height direction, and a cross flow fan disposed in the spaces 11a, 11b in adjacent to the heat exchanger 4 for collecting heat, and extending in the vertical height direction, is used as the blower fan 6. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a heat pump hot water supply apparatus in which all or a part of the components of a heat pump are housed in a housing housing a hot water storage tank.

  As is well known, a heat pump hot water supply apparatus generally heats hot water with a heat pump and stores the heated hot water in a hot water storage tank. The heat pump includes, for example, a blower fan, a heat recovery heat exchanger that recovers heat from the air sent by the blower fan, a refrigerant compressor, a hot water heating heat exchanger, and an expansion valve. . Such a heat pump hot-water supply apparatus has a heat pump and a hot water storage tank as separate units from the viewpoint of reducing the installation space, the viewpoint of facilitating transportation and installation work, and the appearance of the appearance. It is preferable not to configure them, but to make them one unit. Then, as a conventional heat pump hot-water supply apparatus, there exist some which were described in patent documents 1-9, for example. In the heat pump hot water supply apparatus described in these documents 1 to 9, the components of the heat pump and the hot water storage tank are accommodated in one housing.

  However, the prior art still has room for improvement as described below.

  In other words, when the heat pump components and the hot water storage tank are housed in one housing, it is desired to arrange them efficiently in the housing and to reduce the size of the housing. On the other hand, the housing is preferably formed in a substantially rectangular parallelepiped shape in consideration of convenience when installed in various places, good appearance, and the like. Moreover, about a hot water storage tank, it is preferable to form the center part except a vertical both ends at least from a viewpoint of improving pressure | voltage resistance. However, when a cylindrical hot water storage tank is housed in a substantially rectangular parallelepiped casing, space spaces extending in the vertical direction are generated at the four corners of the casing. In the prior art, when a heat pump component device is incorporated in a housing, such a space is not sufficiently utilized, and this point is wasted.

  Patent Documents 1 to 3 describe means for arranging a compressor, a heat exchanger for hot water heating, and the like, which are constituent devices of a heat pump, in the space space in the casing as described above. However, the means described in Patent Documents 1 to 3 are, as schematically shown in FIG. 7, a small-sized component of the heat pump in the space space 90 at the corner of the housing 9 that houses the hot water storage tank 92. 91 is simply arranged, and the arrangement location is, for example, the lower part of the space 90. In this case, in the space 90, the portion S having a longer dimension than the component device 91 is not effectively used, and there is room for improvement.

  In order to increase the efficiency of the heat pump, it is necessary to increase the heat transfer area by forming the heat exchanger for heat recovery to a certain size. However, in the past, when the heat recovery heat exchanger was increased in size, it was difficult to accommodate the space efficiently in the housing, and this was one of the major factors leading to the increase in overall size. It was. Conventionally, a propeller fan is often used as a blower fan. However, this blower fan is also bulky in the housing, and this is one of the factors leading to an increase in the overall size. It was.

JP 2004-333000 A JP-A-2005-76937 JP 2004-177692 A Japanese Utility Model Publication No. 60-104657 Japanese Utility Model Publication No. 60-75846 JP 2005-164136 A JP 2002-310499 A Japanese Patent Laying-Open No. 2005-83712 JP 59-210260

  The present invention has been conceived under such circumstances, and the performance of the heat pump is reduced when the heat pump components and the hot water storage tank are accommodated in a single housing for unitization. An object of the present invention is to provide a heat pump hot water supply apparatus that can efficiently provide a space-saving configuration of the heat pump components without causing problems such as.

  In order to solve the above problems, the present invention takes the following technical means.

  The heat pump hot water supply apparatus provided by the present invention has a heat recovery heat exchanger for recovering heat from the air, and a blower fan for supplying air to the heat recovery heat exchanger, A heat pump configured to be capable of hot water heating using heat recovered by a heat recovery heat exchanger, and a hot or cold water that is entirely or partially extended in a vertical direction and heated by the heat pump. A heat pump hot water supply apparatus, a heat storage heat exchanger for heat recovery of the heat pump, a blower fan, and a substantially rectangular parallelepiped housing that houses the hot water storage tank, The recovery heat exchanger is arranged in a space formed between the side wall of the corner of the casing and the hot water storage tank, and extends in the vertical height direction in this space. As the blower fan, a cross flow fan arranged in the space space adjacent to the heat recovery heat exchanger and extending in the vertical height direction in the space space is used. It is characterized by being.

  In the present invention, the heat exchanger for heat recovery of the heat pump has a unique form extending in the vertical direction, and the blower fan is a cross flow fan instead of the conventional propeller type. It is used. The heat recovery heat exchanger and the cross flow fan are arranged in a space space at the corner of the housing and extend in the same direction as the space space. Therefore, according to the present invention, the heat recovery heat exchanger and the cross flow fan can be accommodated in the housing in a manner in which a wide area in the vertical height direction of the space in the housing is effectively used. On the other hand, if the heat recovery heat exchanger is configured to extend in the vertical direction, for example, even if the width and thickness of the heat recovery heat exchanger are reduced, the overall volume is increased. The heat transfer area can be widened. Moreover, even if the crossflow fan is in an elongated form, it exhibits a sufficient blowing performance. For this reason, according to the present invention, the heat recovery heat exchanger and the blower fan are accommodated in the housing in a space efficient manner while improving the performance of the heat pump, and the entire size is appropriately reduced. be able to.

  In a preferred embodiment of the present invention, an air inlet for sending outside air of the housing to the heat recovery heat exchanger is provided in one of the two side walls forming the corner of the housing. On the other hand, an exhaust port for discharging the air that has passed through the heat recovery heat exchanger to the outside of the housing is provided.

  According to such a configuration, supply and discharge of external air to the heat recovery heat exchanger can be appropriately performed using the intake port and the exhaust port. The intake port and the exhaust port are discharged from the exhaust port because they are provided separately on the two side wall portions that form the corners of the housing, that is, the two side wall portions that cross each other and face different directions. It is also possible to obtain an effect of preventing a phenomenon in which cold air after heat recovery proceeds directly toward the intake port.

  In a preferred embodiment of the present invention, the heat pump includes a compressor and a hot water heating heat exchanger, and the compressor and the hot water heating heat exchanger include the heat recovery heat exchanger and the cloth. It is arranged below the flow fan and accommodated in the housing.

  According to such a configuration, the compressor and the hot water heating heat exchanger can be accommodated using the space at the corners of the housing, similarly to the heat recovery heat exchanger and the cross flow fan. . In addition, the compressor and the hot water heating heat exchanger are generally heavy, and they are arranged below the heat recovery heat exchanger and the cross flow fan, thereby lowering the center of gravity of the entire apparatus. Therefore, the feeling of stability at the time of installation and transportation of the apparatus is also good.

  In a preferred embodiment of the present invention, the housing includes box-shaped first and second divided housings whose front surfaces are open, and the first and second housings are closed so that the front openings are closed. The second divided housing has a configuration in which the two divided housings are connected to face each other, the heat pump is accommodated in the first divided housing, and the second divided housing is The hot water storage tank is accommodated.

  According to such a structure, when manufacturing this heat pump hot-water supply apparatus, the process of accommodating a heat pump in a 1st division | segmentation housing | casing, the process of accommodating a hot water storage tank in a 2nd division | segmentation housing | casing, and those heat pumps and hot water storage The step of connecting the first and second divided housings containing the tanks may be executed individually. Therefore, the manufacturing operation becomes easy and suitable for mass production. In addition, when a failure occurs during use, the first and second divided housings can be separated from each other and opened in front of them to easily repair them. It becomes. Thus, the maintenance workability is excellent.

  In a preferred embodiment of the present invention, each of the first and second divided housings includes three side wall portions that are connected to each other in a substantially U shape in a plane cross section and extend in the vertical direction, and these three side wall portions. The first divided housing has a front edge portion of the top plate portion and the bottom plate portion formed in a concave shape in plan view. The depth dimension at both end portions in the width direction is larger than the depth dimension at the center portion in the width direction, and the front edge portion of the upper plate portion and the bottom plate portion of the second divided housing is convex in plan view. The depth dimension at the center in the width direction is larger than the depth dimension at both ends in the width direction.

  According to such a configuration, the following effects can be obtained. That is, when a cylindrical hot water storage tank is accommodated in the second divided housing, the width of the hot water storage tank becomes maximum at the central portion in the width direction of the second divided housing. On the other hand, since the depth dimension of the center part in the width direction of the second divided casing is increased, the hot water storage tank is made to be the second size while reducing the overall size of the second divided casing as much as possible. It becomes possible not to protrude greatly outside the divided housing. In addition, the second split housing has a front edge portion of the top plate portion and the bottom plate portion having a convex shape in plan view, whereas the top plate portion and bottom plate portion of the first split housing has a concave shape in plan view. Therefore, when the first and second divided housings are connected, the convex portions and the concave portions are fitted to each other so that a large gap or the like is not generated in the portions. The appearance of the body can be improved. Further, since the first divided casing has a large depth dimension at both ends in the width direction, that is, a dimension corresponding to the corner portion of the casing, the heat recovery heat exchanger or cross flow fan of the heat pump. A space for arranging the space is appropriately secured.

  In a preferred embodiment of the present invention, a pipe for connecting the heat pump and the hot water storage tank is provided, and the pipe includes a portion arranged in the first divided casing and the second divided casing. The divided pipes are connected to each other through a joint, and the side wall of the housing has a maintenance opening located on the side of the joint. Is provided.

  According to such a configuration, when the first and second divided housings are connected and separated, the tube that connects the heat pump and the hot water storage tank becomes an obstacle and the work becomes difficult. Is properly avoided.

  Other features and advantages of the present invention will become more apparent from the following description of embodiments of the present invention with reference to the accompanying drawings.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

  1-5 has shown one Embodiment of the heat pump hot-water supply apparatus with which this invention was applied, and its component. 1 and 2, the heat pump hot water supply apparatus A of the present embodiment has a configuration in which a heat pump H and a hot water storage tank 2 are accommodated in a housing 1 and these are unitized. is doing.

  The housing 1 is configured by using, for example, a thin metal plate having a rust-proof coating or the like on its surface, and the overall shape thereof is a substantially rectangular parallelepiped shape. However, as shown in FIG. 2, the housing 1 is configured by combining the first and second divided housings 10A and 10B. Details thereof will be described later.

  The hot water storage tank 2 is for storing hot water heated by the heat pump H, and the overall shape is cylindrical, or an intermediate portion other than the hemispherical upper and lower ends is formed in a cylindrical shape. And it is accommodated in the housing | casing 1 with the attitude | position which stood up. As a result, space spaces 11 a to 11 d extending in the vertical height direction are formed inside the four corners of the housing 1 so as to be sandwiched between the side wall portion of the housing 1 and the outer peripheral surface of the hot water storage tank 2. Yes.

The heat pump H is capable of recovering heat from the intake air and heating hot water supplied from the hot water storage tank 2 and other places, and has a path for circulating a refrigerant such as CO ₂ , for example. The compressor 3, the two heat recovery heat exchangers 4, the hot water heating heat exchanger 50, the expansion valve 51, and the like are provided. The contents of the basic heat pump cycle are the same as those of conventional heat pumps, and details thereof are omitted. The heat pump H includes two cross-flow fans 6 as air blowing means for supplying air to the two heat recovery heat exchangers 4.

  As shown in FIG. 4A, the heat recovery heat exchanger 4 includes two fin pipe blocks 40 having a generally rectangular shape as a whole. The fin pipe block 40 is provided so as to meander through the plurality of fins 400 and the plurality of fins 400 that extend in the longitudinal direction of the block 40 and are arranged at substantially constant intervals in the short direction. And a pipe body 401 for circulating the refrigerant. These two fin pipe blocks 40 are connected in a V shape or an L shape in plan view. A part of these pipes 401 is connected so as to allow refrigerant to flow from one to the other. As shown in FIG. 3, the two heat recovery heat exchangers 4 having such a configuration are arranged in the space spaces 11 a and 11 b at the two corners of the four corners of the housing 1. It is set to a posture extending in the vertical height direction (direction orthogonal to the paper surface of FIG. 3). The direction of the heat recovery heat exchanger 4 is such that the central portion where the two fin-pipe blocks 40 are connected is closer to the center of the housing 1 than both end portions thereof. As a means for forming the heat recovery heat exchanger 4 in an elongated shape having a V shape or an L shape in plan view, for example, as shown in FIG. 4B, one fin pipe block 40A is provided. It is also possible to use means that is formed in a shape that is curved or bent in a substantially V shape or L shape in plan view.

  The cross flow fan 6 is configured to include an elongated substantially cylindrical rotary blade, and can be driven by a motor (not shown). Each of the two cross flow fans 6 is disposed in and adjacent to a space portion sandwiched between two fin pipe blocks 40 of the heat recovery heat exchanger 4 and extends in the vertical height direction. These two cross flow fans 6 are also arranged in the space spaces 11 a and 11 b in the housing 1, similarly to the heat recovery heat exchanger 4. The lengths of the heat recovery heat exchanger 4 and the cross flow fan 6 in the vertical height direction are substantially the same.

  A pair of intake ports 19a is formed in the two side wall portions 13a and 13c of the housing 1, and a pair of exhaust ports 19b is formed in the side wall portion 13b. The intake port 19 a and the exhaust port 19 b are formed at positions and sizes facing substantially the entire length region of the heat recovery heat exchanger 4 and the cross flow fan 6. When the cross flow fan 6 is driven, an air flow as indicated by arrows N1 and N2 in FIG. 3 is generated, which will be described later. In FIG. 1, FIG. 2 and FIG. 5, the intake port 19a and the exhaust port 19b are shown as simple openings, but the present invention is not limited to this. In the present invention, as shown in FIG. 6, for example, a plurality of intake ports 19a and exhaust ports 19b provided with a plurality of flap pieces 190 for preventing rainwater and the like from entering the housing 1 may be used. It doesn't matter. Alternatively, the intake port 19a and the exhaust port 19b may be covered with a breathable mesh material.

  As shown in FIGS. 1 and 2, the compressor 3, the hot water heating heat exchanger 50, and the expansion valve 51 of the heat pump H are arranged below the two heat recovery heat exchangers 4 and the cross flow fan 6. The two space spaces 11a and 11b of the housing 1 are used. Although not shown in the drawings, the heat recovery heat exchanger 4 and the cross flow fan 6 are supported using appropriate brackets.

  As shown in FIG. 5, the housing 1 includes first and second divided housings 10A and 10B. Each of the first and second divided housings 10A and 10B has a box shape having front opening portions 12a and 12b, and in addition to the three side wall portions 13a to 13c and 13d to 13f having a U-shaped cross section in plan view, The upper plate portions 14a and 14b and the bottom plate portions 15a and 15b are connected to the upper and lower portions substantially horizontally. 10 A of 1st division | segmentation housing | casing is an element for accommodating the heat pump H, The front-edge parts 14a 'and 15a' of the upper-plate part 14a and the bottom-plate part 15a are the substantially V-shaped recessed parts 16a of planar view. 17a is specified. Accordingly, in the first divided housing 10A, the depth dimension L2 at both end portions in the width direction is larger than the depth dimension L1 at the center portion in the width direction. On the other hand, the second divided housing 10 </ b> B is an element for housing the hot water storage tank 2. The upper plate portion 14b and the bottom plate portion 15b are pentagonal, and the front edge portions 14b ′ and 15b ′ thereof are triangular convex portions 16b that can be fitted into the concave portions 16a and 17a of the first divided housing 10A. 17b is formed. Thus, in the second divided housing 10B, the depth dimension L4 at the center in the width direction is larger than the depth dimension L3 at both ends in the width direction. In addition, the shape of the convex parts 16b and 17b can be formed in a semicircular shape corresponding to the outer peripheral shape of the hot water storage tank 2, for example, instead of the triangular shape. In this case, the concave portions 16a and 17a of the first divided housing 10A are formed in a semicircular shape corresponding to the concave portions 16a and 17a.

  1st and 2nd division | segmentation housing | casing 10A, 10B is the substantially rectangular parallelepiped shape by which those front opening parts 12a and 12b were block | closed by connecting so that those front opening parts 12a and 12b might be united. Formed. Although not shown in the drawings, the first and second divided housings 10A and 10B are configured to be able to freely hold and release them. As one means for that purpose, for example, a means is adopted in which brackets that overlap each other when the first and second divided housings 10A and 10B are brought into contact with each other are fixed to each other by bolts. That's fine.

  In the first and second divided housings 10A and 10B, a plurality of pipes 70a and 70b for connecting the hot water heating heat exchanger 50 and the hot water storage tank 2 by piping are also provided. These pipes 70 a and 70 b are for supplying hot water from the hot water storage tank 2 to the hot water heating heat exchanger 50 and returning hot water heated by the hot water heating heat exchanger 50 to the hot water storage tank 2. . At least one end of these tubular bodies 70a, 70b is provided with a joint portion 71. These pipes are connected with the connection and release of the first and second divided housings 10A, 10B. The bodies 70a and 70b can be connected and disconnected. The side wall 13a of the first divided housing 10A is provided with a maintenance opening 18 for performing such a pipe joint attachment / detachment operation. Although not shown in the drawings, the housing 1 has a piping having a hot water outlet for supplying hot water from the hot water storage tank 2 to a desired hot water supply destination, and a water inlet for supplying tap water to the hot water storage tank 2. Piping etc. which have are also provided.

  Next, the operation of the heat pump hot water supply apparatus A will be described.

  First, when hot water is heated by operating the heat pump H, the two cross flow fans 6 are driven. Then, as indicated by arrows N1 and N2 in FIG. 3, the air outside the housing 1 flows into the housing 1 from the suction port 19a and passes through the two fin pipe blocks 40 of the heat exchanger 4 for heat recovery. Then, it is discharged from the exhaust port 19b to the outside of the housing 1. Therefore, air can be supplied smoothly to the heat recovery heat exchanger 4, and heat can be recovered appropriately from the air. Although the heat recovery heat exchanger 4 has a small width, the heat recovery heat exchanger 4 has a shape extending in the vertical height direction, so that the heat transfer area can be increased. Moreover, even if the cross flow fan 6 is made into an elongate shape, it exhibits sufficient ventilation performance. Therefore, there is no problem that the capability of the heat pump H is reduced due to the heat recovery heat exchanger 4 having an elongated shape. Further, the heat recovery heat exchanger 4 has a configuration in which the two fin pipe blocks 40 are connected in a substantially V shape or a substantially L shape, and therefore is discharged from the exhaust port 19b by the cross flow fan 6. It is also possible to configure so that substantially the entire amount of air that passes through the fin pipe block 40 appropriately passes. This can increase the heat recovery efficiency. Since the exhaust port 19b opens in a direction different from that of the intake port 19a, the problem that the low-temperature air exhausted from the exhaust port 19b directly proceeds toward the intake port 19a is appropriately avoided. The

  On the other hand, the two heat recovery heat exchangers 4 and the cross flow fan 6 are arranged in the space spaces 11a and 11b at the two corners of the four corners of the casing 1, as described above, and these space spaces Similar to 11a and 11b, it extends in the vertical direction. Therefore, a wide area of the space spaces 11a and 11b is effectively used, and the heat recovery heat exchanger 4 and the cross flow fan 6 are installed, so that an increase in the size of the housing 1 is suppressed. In addition, although the other space spaces 11c and 11d of the housing 1 are not used for installing the components of the heat pump H, some of the space spaces 11a to 11d at the four corners of the housing 1 are effectively used. As a result, it is possible to obtain an effect of suppressing the enlargement of the housing 1.

  The compressor 3 and the hot water heating heat exchanger 50 of the heat pump H are arranged below the heat recovery heat exchanger 4 and the cross flow fan 6, and are also provided in a state where the space spaces 11a and 11b are effectively used. ing. Therefore, the enlargement of the housing 1 is further suppressed by this. In addition, the compressor 3 and the hot water heating heat exchanger 50 are relatively heavy, and if they are provided in the vicinity of the bottom of the casing 1, the center of gravity of the casing 1 is lowered and the stability is improved. The effect becomes.

  The housing 1 is separable into first and second divided housings 10A and 10B, and they are configured to have front openings 12a and 12b. For this reason, when a failure or the like occurs in a device in the housing 1, the first and second divided housings 10A and 10B can be separated and repaired easily. Moreover, in manufacturing this heat pump hot-water supply apparatus A, the process of assembling the heat pump H in the 1st division | segmentation housing | casing 10A, the process of assembling the hot water storage tank 2 in the 2nd division | segmentation housing | casing 10B, and these are connected. It is possible to employ a method of separately executing the steps to be performed. Therefore, it is possible to rationalize the manufacturing operation and reduce the manufacturing cost. As described with reference to FIG. 5, the second divided housing 10 </ b> B has the depth dimension L <b> 4 at the center in the width direction being increased. For this reason, it is possible to prevent the hot water storage tank 2 from protruding outside the second divided housing 10B, and to reduce the amount of protrusion when it temporarily protrudes. In this way, for example, when the hot water storage tank 2 is accommodated in the second divided housing 10B and is transported while the front opening 12b is open, the hot water storage tank 2 is suitably protected. Will be illustrated.

  When connecting the first and second divided housings 10A and 10B, the convex portions 16b and 17b of the second divided housing 10B are fitted into the concave portions 16a and 17a of the first divided housing 10A. be able to. This prevents a gap that allows rainwater or the like from entering between the upper plate portions 14a and 14b and the bottom plate portions 15a and 15b between the first and second divided housings 10A and 10B. The rectangular parallelepiped casing 1 can be configured with good appearance. The first divided housing 10A is formed so that the depth dimension L1 at the center in the width direction is small, but the depth dimension L2 at both ends in the width direction including the space spaces 11a and 11b is relatively large, and the heat pump H The space for installing the components is appropriately secured. In addition, since the dimension L2 described above is increased, it is possible to prevent the components of the heat pump H from protruding significantly outward from the first divided housing 10A.

  The present invention is not limited to the embodiment described above. The specific configuration of each part of the heat pump hot water supply apparatus according to the present invention can be varied in design in various ways.

  In the above-described embodiment, two sets of heat recovery heat exchangers and cross flow fans are used, but the present invention is not limited to this. For example, a heat recovery heat exchanger and a cross flow fan may be set as one set, and these may be simply provided in a space at one corner of the casing. Even in this case, the effect intended by the present invention can be obtained because the space at the corner of the housing is effectively utilized. Of course, it is also possible to employ a configuration in which three or more sets of heat exchangers for heat recovery and cross flow fans are provided. The number of heat pumps and hot water storage tanks may not be in a one-to-one relationship. For example, two heat pumps and one hot water storage tank may be used. When two heat pumps are provided, the heat recovery heat exchanger and the cross flow fan can be accommodated in all the space spaces at the four corners of the housing.

  The housing can be configured not to have the first and second divided housings, for example, a configuration in which a housing body having one side opened and a lid that closes the opening are combined. can do.

  From the viewpoint of improving the handleability of the heat pump hot water supply apparatus, it is preferable that all the components of the heat pump and the hot water storage tank are accommodated in one housing, and the whole is configured as one unit. However, in the present invention, a configuration different from this may be used. In other words, the present invention has the greatest feature in the structure in which the heat recovery heat exchanger and the blower fan of the heat pump are accommodated in the casing in a space-efficient manner, and among the components of the heat pump, the heat recovery heat exchanger and the blower fan It is a matter which can be selected arbitrarily how to install other components. Therefore, for example, among the components of the heat pump, it is possible to adopt a configuration in which some components other than the heat recovery heat exchanger and the blower fan are provided outside the casing. Are also included in the technical scope of the present invention.

It is a schematic perspective view which shows one Embodiment of the heat pump hot-water supply apparatus with which this invention was applied. It is a schematic exploded perspective view of the heat pump hot-water supply apparatus shown in FIG. It is a schematic plane sectional view of the heat pump hot-water supply apparatus shown in FIG. (A) is a schematic perspective view which shows an example of the heat exchanger for heat recovery incorporated in the heat pump hot-water supply apparatus shown in FIG. 1, (b) shows the other example of the heat exchanger for heat recovery. It is a schematic perspective view. It is a schematic perspective view of the housing | casing of the heat pump hot-water supply apparatus shown in FIG. It is a perspective view which shows the other example of a part of housing | casing. It is explanatory drawing which shows an example of a prior art typically.

Explanation of symbols

A Heat pump hot water supply device H Heat pump 1 Housing 2 Hot water storage tank 3 Compressor 4 Heat exchanger for heat recovery 6 Cross flow fan 10A, 10B First and second divided housings 11a-11d Spatial space 12a, 12b Front opening 13a ~ 13f Side wall (of the housing)
14a, 14b Upper plate portion 15a, 15b Bottom plate portion 19a Intake port 19b Exhaust port 50 Heat exchanger for hot water heating 51 Expansion valve

Claims (6)

A heat recovery heat exchanger for recovering heat from the air, and a blower fan for supplying air to the heat recovery heat exchanger, and the heat recovered by the heat recovery heat exchanger A heat pump configured to be capable of heating with hot water,
A hot water storage tank that is entirely cylindrical or partially extending in the vertical direction, and that can store hot water heated by the heat pump;
A heat exchanger for heat recovery of the heat pump and a blower fan, and a substantially rectangular parallelepiped housing that houses the hot water storage tank;
A heat pump hot water supply device comprising:
The heat recovery heat exchanger is arranged in a space space formed between the side wall portion of the corner of the casing and the hot water storage tank, and extends in the vertical height direction in this space space. And
As the blower fan, a cross flow fan is used which is arranged in the space space adjacent to the heat recovery heat exchanger and extends in the vertical height direction in the space space. Heat pump water heater.   One of the two side walls forming the corner of the casing is provided with an air inlet for sending outside air of the casing to the heat recovery heat exchanger, and the other is the heat recovery The heat pump hot-water supply apparatus of Claim 1 with which the exhaust port for discharging | emitting the air which passed the heat exchanger for water to the exterior of the said housing | casing is provided.   The heat pump includes a compressor and a hot water heating heat exchanger, and the compressor and the hot water heating heat exchanger are disposed below the heat recovery heat exchanger and the cross flow fan, and the housing. The heat pump hot-water supply apparatus of Claim 1 or 2 accommodated in the body. The housing includes box-shaped first and second divided housings whose front faces are open, and the first and second divided housings face each other so that the front openings are closed. Connected to each other,
The heat pump according to any one of claims 1 to 3, wherein the heat pump is accommodated in the first divided casing, and the hot water storage tank is accommodated in the second divided casing. Hot water supply device. Each of the first and second divided housings has three side wall portions that are connected in a substantially U shape in a plane cross section and extend in the vertical height direction, and a substantially horizontal shape that is connected to the upper and lower portions of the three side wall portions. Has an upper plate portion and a bottom plate portion,
In the first divided housing, the front edge portion of the top plate portion and the bottom plate portion are formed in a concave shape in plan view, and the depth dimension at both ends in the width direction is made larger than the depth dimension at the center portion in the width direction. And
In the second divided housing, the front edge portions of the upper plate portion and the bottom plate portion are formed in a convex shape in plan view, and the depth dimension at the center portion in the width direction is made larger than the depth dimension at both ends in the width direction. The heat pump hot water supply apparatus according to claim 4. A pipe connecting the heat pump and the hot water storage tank;
The pipe is divided into a portion arranged in the first divided housing and a portion arranged in the second divided housing, and the divided pipes are connected through a joint. And
The heat pump hot water supply apparatus according to claim 4 or 5, wherein an opening for maintenance located on a side of the joint is provided on a side wall of the housing.

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