Heat pump device

Abstract

To provide a heat pump device in which a plurality of boards can be housed in a smaller space.SOLUTION: A heat pump device comprises a case 11, and an electric component box 40 housed in the case 11. A housing space S is provided inside the electric component box 40. In the housing space S, a plurality of boards are arranged so as to at least partially overlap one another.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a heat pump device. [Background technology]

[0002] Patent Document 1 discloses an outdoor unit and an air conditioner that are environmentally friendly and have high safety, reliability, and comfort. The air conditioner of Patent Document 1 comprises a housing having a bottom plate and at least a portion of which is made of metal, a compressor provided inside the housing for compressing a flammable refrigerant, an outdoor heat exchanger provided inside the housing for exchanging heat between the refrigerant and outside air, and an electric heating device provided on the upper surface of the bottom plate, the power consumption of which is 250W or less. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2015-55455 Summary of the Invention [Problem to be solved by the invention]

[0004] The present disclosure provides a heat pump device that can accommodate multiple substrates in a smaller space. [Means for solving the problem]

[0005] The heat pump device of the present disclosure comprises a housing and an electrical box housed in the housing, a storage space is provided inside the electrical box, and a plurality of substrates are arranged in the storage space with at least a portion of the substrates overlapping each other. [Effects of the Invention]

[0006] According to the present invention, multiple substrates can be accommodated in a smaller space. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is a diagram showing a refrigerant circuit and a water circuit of a hot water heater according to a first embodiment. [Figure 2] A perspective view showing the inside of the outdoor unit [Figure 3] Exploded perspective view of the electrical box [Figure 4] Plan view of electrical box [Figure 5] VV cross section of Figure 4 [Figure 6] Front view of electrical box DETAILED DESCRIPTION OF THE INVENTION

[0008] (Findings that formed the basis of this disclosure) At the time the inventors arrived at the idea of ​​the present disclosure, there was a technology in which an electrical box for accommodating electronic components such as circuit boards was provided in the housing of an outdoor unit of a heat pump apparatus, and the airtightness of the electrical box was improved by using a sealing member, etc. In such a heat pump apparatus, multiple circuit boards may be accommodated in the electrical box depending on the apparatus configuration. However, we discovered that there was a problem in that when multiple boards are housed in an electrical box, the dimensions of the electrical box may increase, and in order to solve this problem, we have come to form the subject of the present disclosure. The present disclosure provides a heat pump device that can accommodate multiple substrates in a smaller space.

[0009] Hereinafter, embodiments will be described in detail with reference to the drawings. However, unnecessary detailed description may be omitted. For example, detailed description of well-known matters or redundant description of substantially the same configuration may be omitted. This is to avoid unnecessary redundancy in the following description and to facilitate understanding by those skilled in the art. The accompanying drawings and the following description are provided to enable those skilled in the art to fully understand the present disclosure, and are not intended to limit the subject matter described in the claims.

[0010] (Embodiment 1) Hereinafter, the first embodiment will be described with reference to Figures 1 to 6. The symbol X shown in each figure indicates the left side of the outdoor unit 10 when it is installed on an installation surface and in normal use, the symbol Y indicates the front side of the outdoor unit 10, and the symbol Z indicates the top side of the outdoor unit 10. In the following description, each direction is along the direction of the outdoor unit 10. [1-1.Configuration] [1-1-1. Refrigeration circuit configuration] 1 is a diagram showing a refrigerant circuit R and a water circuit W of a hot water heater 1 according to Embodiment 1. The hot water heater 1 has an outdoor unit 10 that is mainly installed outdoors, and an indoor unit 70 that is mainly installed in a space to be conditioned, such as indoors. The outdoor unit 10 is an example of a "heat pump device" in this disclosure.

[0011] The hot water hot water heater 1 is a device that heats a space to be conditioned by flowing water heated by an outdoor unit 10 through an indoor heat exchanger 71 of an indoor unit 70. The hot water hot water heater 1 of this embodiment can also perform cooling operation by flowing water cooled by the outdoor unit 10 through the indoor heat exchanger 71. In Figure 1, the flow of refrigerant and water during cooling operation of the hot water heater 1 is indicated by arrows.

[0012] The outdoor unit 10 is provided with a refrigerant circuit R. The refrigerant circuit R has a compressor 12, an air heat exchanger 14, an expansion valve 16, and a plate-type water-refrigerant heat exchanger 30. The refrigerant circuit R is filled with a slightly flammable or flammable refrigerant. In this embodiment, the refrigerant circuit R is filled with flammable R290, i.e., a refrigerant containing propane.

[0013] The compressor 12 is a device that draws in, compresses, and discharges a refrigerant. In the outdoor unit 10, a flow path switching mechanism 13 is connected to the discharge side and suction side of the compressor 12. The flow path switching mechanism 13 switches the destination of the refrigerant discharged to the compressor 12 between the air heat exchanger 14 and the plate-type water-refrigerant heat exchanger 30, causing the destination heat exchangers 14, 30 to function as condensers. The flow path switching mechanism 13 also draws the refrigerant that has passed through the evaporator of the heat exchangers 14, 30 into the compressor 12. The flow path switching mechanism 13 is, for example, a four-way valve.

[0014] The air heat exchanger 14 is a heat exchanger that exchanges heat between the refrigerant inside and the outside air. The air heat exchanger 14 is, for example, a fin-tube type heat exchanger. The outdoor unit 10 is provided with an outdoor fan 15 that flows the outside air through the air heat exchanger 14. In this embodiment, the outdoor fan 15 is an axial flow fan.

[0015] The plate-type water-refrigerant heat exchanger 30 is a plate-type heat exchanger that exchanges heat between a refrigerant flowing inside and water.

[0016] The air heat exchanger 14 and the plate-type water-refrigerant heat exchanger 30 are connected via an expansion valve 16. The expansion valve 16 is a valve that reduces the pressure of the refrigerant flowing in from the condenser of each of the heat exchangers 14, 30 to make it a gas-liquid two-phase refrigerant, and allows it to flow into the evaporator of each of the heat exchangers 14, 30. In this embodiment, the opening of the expansion valve 16 can be adjusted by electronic control, and the flow rate of the refrigerant is adjusted by changing the opening.

[0017] As shown in FIG. 1, a refrigerant circuit R configured by connecting a compressor 12, an expansion valve 16, heat exchangers 14, 30, etc. is housed inside a housing 11 of an outdoor unit .

[0018] As shown in FIG. 1, the hot water heater 1 has a water circuit W formed as a heat medium circuit through which a heat medium flows. The water circuit W is a circuit that circulates water as a heat medium between the plate-type water-refrigerant heat exchanger 30 of the outdoor unit 10 and the indoor heat exchanger 71 of the indoor unit 70. The indoor heat exchanger 71 is a heat exchanger that exchanges heat between the water inside and the air in the space to be conditioned. The indoor unit 70 has an indoor blower 73 that flows air through the indoor heat exchanger 71. The indoor unit 70 air-conditions the space to be conditioned by driving the indoor blower 73 and passing the air in the space to be conditioned through the indoor heat exchanger 71 and then returning it to the space to be conditioned.

[0019] The water circuit W connects the indoor unit 70 and the outdoor unit 10, and has two connecting pipes 75, 77 through which water flows as a heat medium. The water circuit W also has a circulation pump 21 inside the outdoor unit 10. When driven, the circulation pump 21 sucks water from the connecting pipe 75 and directs the sucked water toward the plate-type water-refrigerant heat exchanger 30. This causes water to circulate inside the water circuit W.

[0020] [1-1-2. Arrangement of components in heat pump device] 2 is a perspective view showing the inside of the outdoor unit 10. In each drawing of the present disclosure, the housing 11 is partially omitted in order to show the inside of the outdoor unit 10. In addition, in the drawing, the symbol X indicates the left side of the outdoor unit 10, the symbol Y indicates the front side of the outdoor unit 10, and the symbol Z indicates the upper side.

[0021] As shown in Fig. 2, the housing 11 of the outdoor unit 10 has a substantially rectangular parallelepiped shape. Inside the housing 11, there are formed a fan chamber 17, which is a space partitioned off on the left side by a partition plate 19, and a machine chamber 18, which is a space partitioned off on the right side by the partition plate 19. The partition plate 19 is made of sheet metal and is provided in an orientation that is substantially perpendicular to the left-right direction.

[0022] The housing 11 has a bottom plate 11a made of sheet metal that forms the underside of the housing 11. The housing 11 has a front panel 11b that forms the front surface of the blower chamber 17. An opening is formed in the front panel 11b. The housing 11 also has a top panel (not shown). The top panel forms the upper surface of the housing 11. The housing 11 also has a pair of front and rear side panels 11c, 11d. The side panels 11c, 11d are provided in pair at the front and rear of the machine chamber 18. The front side panel 11c covers the machine chamber 18 from the front and right side. The rear side panel 11d covers the machine chamber 18 from the right side and rear side.

[0023] The blower chamber 17 is provided with an air heat exchanger 14 and an outdoor blower 15. The air heat exchanger 14 is provided on the right side and rear surface of the blower chamber 17. More specifically, the right side and rear surface of the blower chamber 17 in the housing 11 are open, and the air heat exchanger 14 is exposed to the outside of the housing 11 through these openings.

[0024] The outdoor fan 15 blows air inside the outdoor unit 10 forward through an opening in the front panel 11b, thereby drawing in outside air through the air heat exchanger 14 and exchanging heat between the outside air and the refrigerant inside the air heat exchanger 14. Note that in this embodiment, an outdoor unit 10 in which two outdoor fans 15 are provided in the fan chamber 17 will be described as an example, but there is no particular limit to the number of outdoor fans 15 in the outdoor unit 10.

[0025] The machinery room 18 is provided with the compressor 12, flow path switching mechanism 13, expansion valve 16, and plate-type water-refrigerant heat exchanger 30. The machinery room 18 also is provided with a circulation pump 21 that circulates water in the water circuit W, a gas-liquid separator 23 that removes gas from the water in the water circuit W, and a flow rate sensor 25 that measures the flow rate of water in the water circuit W. The inlet-side connection valve 22 and the outlet-side connection valve 27, which are connected to the connection pipes 75 and 77, are provided on the rear surface of the machinery room 18, i.e., on the rear side panel 11d.

[0026] [1-1-3. Configuration of the electrical box] As shown in Fig. 2, an electrical box 40 is provided on the top of the outdoor unit 10. The electrical box 40 passes through the top of the partition plate 19 in the left-right direction and is provided across the fan chamber 17 and the machinery chamber 18. The electrical box 40 has a generally horizontal, plate-shaped upper cover 41 and a main body 42 that is closed from above by the upper cover 41.

[0027] 3 is an exploded perspective view of the electrical box 40. In FIG. 3, the top cover 41 and the front cover 49 are omitted. 3, in this embodiment, main body 42 is formed by assembling first housing 43 and second housing 44. First housing 43 corresponds to the "first housing section" in the present disclosure, and second housing 44 corresponds to the "second housing section" in the present disclosure.

[0028] The first housing 43 is a hollow, substantially rectangular parallelepiped member that straddles the fan chamber 17 and the machine chamber 18. An internal space S1 is provided inside the first housing 43. In this embodiment, the first housing 43 is made of a metal material. A first opening 45 that opens over the entire top surface is formed in the first housing 43. The top cover 41 closes the first opening 45 via, for example, an O-ring or the like. This seals the first opening 45 while ensuring airtightness.

[0029] In first housing 43, a second opening 46 that opens downward is formed on the underside of the portion located in machine chamber 18, and a cooling opening 29 that opens downward is provided on the underside of the portion located in blower chamber 17. A heat sink 28 equipped with a plurality of fins is inserted into cooling opening 29. Heat sink 28 protrudes downward from cooling opening 29, and the plurality of fins are arranged in blower chamber 17.

[0030] In the internal space S1 of the first housing 43, a first board 51 is housed in a position that will be above the fan chamber 17. The first board 51 is a control board that controls the compressor 12 and the outdoor fan 15. The first board 51 is disposed in contact with the heat sink 28. The first substrate 51 corresponds to the "other substrate" in the present disclosure.

[0031] The second housing 44 is a hollow member located in the machine chamber 18. An internal space S2 is provided inside the second housing 44. In this embodiment, the second housing 44 is made of a resin material. The second housing 44 includes a main body 80 formed in a hollow, generally rectangular parallelepiped shape. A third opening 47 that opens over the entire top surface is formed in the main body 80. A flange 84 is provided in the main body 80, extending outward from the third opening 47 over the entire circumferential direction of the third opening 47.

[0032] The second housing 44 has an opening forming portion 82 formed in a hollow, approximately rectangular parallelepiped shape. The opening forming portion 82 is provided on the front surface of the main body portion 80, and the lower end of the opening forming portion 82 extends below the lower surface of the main body portion 80. The opening forming portion 82 has a front surface formed with a fourth opening 48 as an opening.

[0033] The second housing 44 is connected to the first housing 43 by being inserted into the second opening 46 and the flange 84 engaging with the periphery of the second opening 46. The first housing 43 and the second housing 44 are fixed in a sealed state with an adhesive such as silicone. As a result, the second housing body 44 bulges downward from the lower surface of the first housing body 43. In this way, the electrical box 40 is formed by combining the first housing 43 and the second housing 44 made of different materials, and is therefore formed in a more compact size while improving noise shielding.

[0034] The internal space S1 and the internal space S2 are connected to each other via the third opening 47. As a result, a storage space S is formed inside the electrical box 40, which is a continuous space consisting of the internal space S1 and the internal space S2.

[0035] The second housing 44 houses a second circuit board 52 and a third circuit board 53. The second circuit board 52 mainly mounts circuits related to power control, such as a noise filter and inverter that rectifies the output of the first circuit board 51. The third circuit board 53 is a control board that sends and receives signals to and from the flow rate sensor 25 and controls the water circuit W, such as the circulation pump 21.

[0036] Fig. 4 is a plan view of the electrical box 40. Fig. 5 is a VV cross-sectional view of Fig. 4. Fig. 5 shows a cross section of the electrical box 40 on a plane that is perpendicular to the front-rear direction and intersects with the main body 80. In Figs. 4 and 5, the upper cover 41 is omitted from the internal space. As shown in FIG. 3, the second substrate 52 and the third substrate 53 are housed in the internal space S2 in a stacked state along the vertical direction. As shown in FIGS. 4 and 5, the second substrate 52 is disposed at the upper end of the internal space S2, and the third substrate 53 is disposed below the second substrate 52.

[0037] The second substrate 52 and the third substrate 53 are arranged so as to overlap each other in a plan view. The second substrate 52 and the third substrate 53 may be arranged so as to overlap at least partially, depending on their respective dimensions and arrangement positions.

[0038] 5, the electronic components mounted on the mounting surface of the second substrate 52 partially protrude into the internal space S1. In this manner, at least a portion of the second substrate 52 may be disposed in the internal space S1.

[0039] As shown in FIGS. 3 and 5, a fifth opening 44a that opens downward is formed on the bottom surface of the main body 80. The fifth opening 44a is a generally rectangular opening. The fifth opening 44a connects the inside and outside of the electrical box 40. The fifth opening 44a is closed from the inside of the electrical box 40 by the wiring relay module 60. For example, wires extending from the first board 51, the second board 52, and the third board 53, as well as wires extending from the outside of the electrical box 40, are inserted through the wiring relay module 60. The second substrate 52 and the third substrate 53 correspond to an example of the "plurality of substrates" in the present disclosure.

[0040] 3, a terminal block 90 and a breaker box 92 are housed inside the opening forming portion 82. The terminal block 90 corresponds to the "wiring connection portion" of the present disclosure. The wire connection storage section 36 may store not only the terminal block 90 but also various types of wiring connectors.

[0041] A wire lead-in hole 85, which is a through-hole that connects the inside and outside of the wire connection storage portion, is provided on the lower surface of the opening forming portion 82. The wire lead-in hole 85 corresponds to the "wire lead-in portion" of the present disclosure. A plurality of cable glands 86 are provided in the wiring lead-in hole 85. The cable glands 86 are lead-in ports that lead the wiring extending from the outside of the housing 11 into the opening forming portion 82 while ensuring waterproof and dustproof properties. The wiring is connected to, for example, a terminal block 90. ​​The cable glands 86 correspond to the "sealing member" of the present disclosure.

[0042] 6 is a front view of the electrical box 40. In FIG. 6, the top cover 41 and the front cover 49 are omitted. As described above, the fourth opening 48 that opens forward is formed in the front surface of the second housing 44. The fourth opening 48 connects the internal space S2 and the internal space of the housing 11. As shown in FIG. 6, the fourth opening 48 is formed with a size that allows the entire terminal block 90 and the breaker box 92 to be exposed to the outside of the electrical box 40 through the fourth opening 48 in front view. This allows workers to easily perform wiring work and the like in the electrical box 40.

[0043] 2, the fourth opening 48 is removably closed by a flat front cover 49 via a sealing member 94 made of a flexible material such as rubber. The front cover 49 is made of a strong and durable material, such as a metal material. This allows the electrical box 40 to maintain airtightness while allowing workers to easily perform wiring work and the like. The front cover 49 corresponds to the "cover body" in this disclosure. The front cover 49 and the fourth opening 48 are disposed inside the housing 11 at positions close to the portion of the side panel 11c that covers the machine chamber 18 from the front side. As a result, in the outdoor unit 10, by removing the side panel 11c, the front cover 49 and the fourth opening 48 can be easily accessed, allowing workers to easily perform wiring work and the like.

[0044] [1-2. Operation] The operation of the outdoor unit 10 configured as above will now be described.

[0045] In the present embodiment, first board 51, second board 52, and third board 53 are housed in sealed electrical box 40, and are thereby isolated from the space inside housing 11. Therefore, in outdoor unit 10, even if a flammable refrigerant leaks inside housing 11, the refrigerant is prevented from reaching first board 51, second board 52, and third board 53.

[0046] When performing wiring work on the outdoor unit 10, the worker removes the side panel 11c and then removes the cover 54. This exposes the terminal block 90, allowing the worker to connect the wiring inserted into the cable gland 86 and the wiring relay module 60 to the terminal block 90. In this way, in the outdoor unit 10, the first board 51, the second board 52, and the third board 53 are isolated from the internal space of the housing 11, while the terminal block 90 is placed in the internal space S2 that can communicate with the outside of the housing 11, making it possible to easily connect wiring outside the housing 11 to the terminal block 90.

[0047] As described above, electrical box 40 has two interconnected internal spaces S1 and S2, and second board 52 and third board 53 are stacked in internal space S2. This allows electrical box 40 to easily ensure airtightness while fitting more electronic components in a smaller space.

[0048] [1-3. Effects, etc.] As described above, in the present embodiment, the outdoor unit 10 includes the housing 11 and the electrical box 40 housed in the housing 11. A storage space S is provided inside the electrical box 40, and the second board 52 and the third board 53 are arranged in the storage space S with at least a portion of them overlapping each other. This allows the second board 52 and the third board 53 to be housed in a smaller space in the outdoor unit 10. As a result, in the outdoor unit 10, the electrical box 40 that houses multiple boards can be made smaller.

[0049] As in the present embodiment, a terminal block 90 is disposed in the storage space S, and at least some of the wiring connected to the electronic components housed inside the electrical box 40 is connected to wiring outside the electrical box 40. The electrical box 40 is provided with a fourth opening 48 that connects the storage space S to the outside of the electrical box 40, and the terminal block 90 may be exposed to the outside of the electrical box 40 through the fourth opening 48. As a result, in the outdoor unit 10, the electronic components that generate heat can be disposed in the storage space S that is isolated from the internal space of the housing 11, and the terminal block 90 can be disposed so as to be able to communicate with the outside of the housing 11. Therefore, in the outdoor unit 10, the electronic components can be isolated from the internal space of the housing 11 by the electrical box 40, while wiring outside the housing 11 can be easily connected to the electronic components.

[0050] As in this embodiment, the electrical box 40 includes a front cover 49 that closes the fourth opening 48 and is formed so as to be detachable from the fourth opening 48, and the front cover 49 may be provided with a sealing member 94 that seals the space between the front cover 49 and the fourth opening 48. This ensures airtightness in the electrical box 40, and allows workers to access the interior of the electrical box 40 from outside the housing 11 through the fourth opening 48. Therefore, in the outdoor unit 10, the electronic components, which are heat-generating members, can be isolated from the internal space of the housing 11, and the wiring of the electrical box 40 can be easily connected to the electronic components.

[0051] As in the present embodiment, second board 52 and third board 53 are arranged such that at least a portion of second board 52 and third board 53 overlap vertically. In electrical box 40, second board 52 and third board 53 may be arranged side by side in a direction intersecting the vertical direction. This allows a plurality of circuit boards to be housed in a smaller space in the electrical box 40. This makes it possible to prevent the electrical box 40 from increasing in size.

[0052] As in this embodiment, the electrical box 40 is provided with a first storage section in which the first board 51 is stored, and a second storage section in which the second board 52 and the third board 53 are stored, and the internal spaces of the first storage section and the second storage section may be formed to be continuous with each other. This allows electrical box 40 to house second board 52 and third board 53 in a smaller space, and also makes it easy to ensure airtightness.

[0053] As in this embodiment, the second storage section is provided with a wiring pull-in section that pulls in wiring outside the housing 11 into the storage space S, and the wiring pull-in section may be provided with a cable gland 86 that pulls in wiring outside the housing 11 into the storage space S while the electrical box 40 is sealed. This allows electrical box 40 to supply external wiring to the internal electronic components while ensuring airtightness.

[0054] (Other embodiments) As described above, the first embodiment has been described as an example of the technology disclosed in the present application. However, the technology in the present disclosure is not limited to this, and can be applied to embodiments in which modifications, substitutions, additions, omissions, etc. are made. Furthermore, it is also possible to combine the components described in the first embodiment above to create new embodiments. Therefore, other embodiments will be exemplified below.

[0055] In the above-described embodiment, the electrical box 40 is formed by combining the first housing 43 and the second housing 44 made of different materials. However, this is not limiting, and the electrical box 40 may be formed by combining the first housing 43 and the second housing 44 made of the same material. Furthermore, for example, the first housing 43 and the second housing 44 may be formed integrally.

[0056] The positions of the first substrate 51, the second substrate 52, and the third substrate 53 can be arbitrarily changed depending on the routing of the wiring connecting them, electromagnetic compatibility, the amount of temperature rise during operation, etc. In this embodiment, the first substrate 51 and the second substrate 52 are connected by more wiring, and more electronic components are mounted on them, so that the first substrate 51 and the second substrate 52, which generate a large amount of heat during operation, are arranged side by side in the left-right direction at the upper side of the storage space S.

[0057] In the first embodiment, a refrigerant containing R290 has been described as an example of a refrigerant. The refrigerant may be any refrigerant that can establish a refrigeration cycle using the refrigerant circuit R. Therefore, the refrigerant is not limited to R290. For example, a refrigerant containing a slightly flammable refrigerant such as R32 may be used as the refrigerant. Furthermore, a non-flammable refrigerant may be used as the refrigerant circuit R.

[0058] In the first embodiment, the outdoor unit 10 is described as being provided in a hot water heater 1 having a water circuit W that uses water as a heat medium. However, the present invention is not limited to this and can be applied to various devices that have a refrigerant circuit, such as a heat source unit of an air conditioner, a chiller system, a water heater, or a heat pump hot water heater. Furthermore, for example, the electrical box 40 may be used in an apparatus that uses a flammable refrigerant, such as an indoor unit of a refrigerator or an air conditioner.

[0059] It should be noted that the above-described embodiments are intended to illustrate the technology of the present disclosure, and various modifications, substitutions, additions, omissions, etc. may be made within the scope of the claims or their equivalents.

[0060] (Addendum) The above description of the embodiments discloses the following techniques.

[0061] (Technology 1) A heat pump device comprising a housing and an electrical box housed in the housing, wherein a storage space is provided inside the electrical box, and a plurality of substrates are arranged in the storage space with at least a portion of the substrates overlapping each other. As a result, in the heat source unit, the electronic components that are heat-generating members are placed in a storage space that is isolated from the internal space of the housing, and an operator can access the inside of the electrical box from outside the housing through the first opening. Therefore, in the heat source unit, the electronic components that are heat-generating members can be isolated from the internal space of the housing, while wiring outside the housing can be easily connected to the electronic components.

[0062] (Technology 2) A heat pump device according to Technology 1, wherein a wiring connection portion is arranged in the storage space, and at least a portion of the wiring connected to the electronic components housed inside the electrical box is connected to wiring outside the electrical box, and the electrical box is provided with an opening that connects the storage space to the outside of the electrical box, and the wiring connection portion is exposed to the outside of the electrical box through the opening. This allows the heat source unit to place the heat-generating electronic components in a storage space isolated from the interior space of the housing, and to arrange the wiring connection section so that it can communicate with the outside of the housing. Therefore, in the heat source unit, the electronic components are isolated from the interior space of the housing by the electrical box, and wiring outside the housing can be easily connected to the electronic components.

[0063] (Technology 3) The heat pump device according to Technology 2, wherein the electrical box includes an electrical box body and a lid that closes the opening and is formed so as to be detachable from the opening, and the lid is provided with a sealing member that seals between the lid and the opening. This ensures airtightness in the electrical box and allows workers to access the interior of the electrical box from outside the housing through the first opening, which allows the heat source unit to easily connect wiring to the electronic components, while isolating the electronic components as heat-generating members from the internal space of the housing.

[0064] (Technology 4) The heat pump device according to any one of Technology 1 to Technology 3, wherein the plurality of boards are arranged such that at least a portion of the plurality of boards overlap one another vertically, and the electrical box accommodates other boards arranged alongside the plurality of boards along a direction intersecting the vertical direction. This allows the electrical box to accommodate multiple boards in a smaller space, thereby preventing the electrical box from increasing in size.

[0065] (Technology 5) The heat pump device according to Technology 4, wherein the electrical box is provided with a first storage section in which the other boards are stored and a second storage section in which the plurality of boards are stored, and the internal spaces of the first storage section and the second storage section are formed to be continuous with each other. This allows the electrical box to house multiple boards in a smaller space and easily ensure airtightness.

[0066] (Technology 6) The heat pump device according to Technology 5, wherein the second storage section is provided with a wiring pull-in section that pulls wiring outside the housing into the storage space, and the wiring pull-in section is provided with a sealing member that pulls the wiring outside the housing into the storage space while sealing the electrical box. This allows the electrical box to supply external power to the electronic components inside while ensuring airtightness. [Industrial Applicability]

[0067] The present disclosure is applicable to heat pump devices, specifically to outdoor units of air conditioners, hot water heaters, and the like. [Explanation of symbols]

[0068] 1. Hot water heater 10 Outdoor unit 11. Housing 11a Bottom plate 11b Front Panel 11c Side Panel 11d Side Panel 12 Compressor 13 Flow path switching mechanism 14 Air heat exchanger 15 Outdoor blower 16 Expansion valve 17 Blower room 18 Machine room 19 Partition 21 Circulation pump 22 Inlet side connection valve 23 Gas-liquid separator 25 Flow Sensor 27 Outlet side connection valve 28 Heat sink 29 Cooling opening 30 Plate-type water-refrigerant heat exchanger 36 Wiring storage section 40 Electrical box 41 Top lid 42 Main body 43 First storage unit 44 Second storage unit 44a 5th opening 45 First opening 46 Second Opening 47 Third Opening 48 4th opening 49 Lid 51 First board 52 Second board 53 Third board 54 Lid 60 Wiring relay module 70 Indoor unit 71 Indoor heat exchanger 73 Indoor fan 75 Connecting piping 77 Connecting piping 80 Main body 82 Aperture forming part 84 Flange 85 Wiring entry hole 86 Cable gland 90 Terminal block 92 Breaker Box 94 Sealing member R Refrigerant circuit S storage space S1 interior space S2 interior space W water circuit

Claims

1. The housing and an electrical box housed in the housing; Equipped with A storage space is provided inside the electrical box, A plurality of substrates are arranged in the storage space so that they at least partially overlap each other. Heat pump equipment.

2. a wiring connection portion is disposed in the storage space, and at least a portion of wiring connected to an electronic component housed inside the electrical box is connected to wiring outside the electrical box; The electrical equipment box is provided with an opening that connects the storage space to the outside of the electrical equipment box, The wiring connection portion is exposed to the outside of the electrical box through the opening. The heat pump device according to claim 1 .

3. The electrical box is The electrical box body, a cover that closes the opening and is formed to be detachable from the opening; Equipped with The lid is provided with a sealing member that seals the gap between the lid and the opening. The heat pump device according to claim 2 .

4. the plurality of substrates are arranged such that at least a portion of the plurality of substrates is vertically overlapped; The electrical box accommodates other boards arranged alongside the plurality of boards in a direction intersecting the vertical direction. The heat pump device according to any one of claims 1 to 3.

5. The electrical box includes: a first storage section in which the other substrate is stored; a second storage section in which the plurality of substrates are stored; is established, The internal spaces of the first storage section and the second storage section are formed to be continuous with each other. The heat pump device according to claim 4.

6. The second storage section is provided with a wiring lead-in section that leads wiring outside the housing into the storage space, The wiring lead-in portion is provided with a seal member that leads the wiring outside the housing into the storage space while sealing the electrical box. The heat pump device according to claim 5 .

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