Electric appliance box and heat pump unit

Abstract

The utility model discloses an electric appliance box and a heat pump unit, the electric appliance box is used for the heat pump unit, the electric appliance box comprises an L-shaped electric appliance box main body, the electric appliance box main body comprises a first substrate and a second substrate which are connected, the second substrate is provided with a first avoiding opening penetrating through the second substrate, and the first avoiding opening is matched with a heat dissipation module protruding on the rear side of a three-phase driving plate; the limiting piece is detachably connected to the second base plate, at least part of the limiting piece is located in the first receding opening, the part, located in the first receding opening, of the limiting piece and part of the inner wall of the first receding opening are enclosed to form a second receding opening, or the part, located in the first receding opening, of the limiting piece independently forms the second receding opening; the second avoiding opening is matched with a heat dissipation module protruding out of the rear side of the single-phase drive board. And the third substrate is used for mounting the variable frequency driver, and at least two first folding edges which are distributed at intervals and detachably connected to the second substrate are arranged at the edge of the third substrate. The electric appliance box is not only beneficial to reducing material cost, but also compatible with a three-phase driving board and a single-phase driving board.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioning, and in particular to an electrical box and a heat pump unit. Background Art

[0002] Traditional heat pump units usually have an electrical box for accommodating an electronic control device, and the traditional electrical box is usually a square box structure with an open top, which is usually fixed to the inner top of the heat pump unit housing during assembly. However, the material cost of this traditional electrical box structure is high and the structure is relatively complex, which makes the production and processing cost high and the production and processing efficiency low. In addition, the electronic control device contained in the electrical box usually includes a three-phase drive board (need to be equipped with a variable frequency drive) or a single-phase drive board (no need to be equipped with a variable frequency drive), wherein, due to the difference in specifications between the three-phase drive board and the single-phase drive board, which is mainly reflected in the difference in size between the heat dissipation module protruding from the rear side of the three-phase drive board and the heat dissipation module protruding from the rear side of the single-phase drive board, it is necessary to design electrical boxes of different specifications for the three-phase drive board and the single-phase drive board, respectively, which increases the production cost of the electrical box and reduces the production efficiency of the electrical box. Utility Model Content

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes an electrical box, which is not only conducive to reducing material costs, but also compatible with three-phase drive boards and single-phase drive boards.

[0004] The present application also proposes a heat pump unit having the above-mentioned electrical box.

[0005] According to the first aspect of the present application, an electrical box is used for a heat pump unit, including: an electrical box body, the electrical box body including a first substrate and a second substrate, the first substrate and the second substrate are connected so that the electrical box body is L-shaped, the second substrate is used to install one of a three-phase drive board and a single-phase drive board, the second substrate is provided with a first avoidance opening that penetrates the second substrate, and the first avoidance opening is adapted to a heat dissipation module protruding from the rear side of the three-phase drive board; a limiter, the limiter is detachably connected to the second substrate and is at least partially located in the first avoidance opening, the part of the limiter located in the first avoidance opening is surrounded by a part of the inner wall of the first avoidance opening to form a second avoidance opening, or the part of the limiter located in the first avoidance opening is independently formed with a second avoidance opening, and the second avoidance opening is adapted to the heat dissipation module protruding from the rear side of the single-phase drive board; a third substrate, at least two first folded edges distributed at intervals are provided at the edge of the third substrate, the first folded edge is detachably connected to the second substrate, so that there is an installation space for avoiding the three-phase drive board between the third substrate and the second substrate, and the third substrate is used to install a variable frequency drive.

[0006] According to the electrical box of the embodiment of the present application, at least the following beneficial effects are achieved: the electrical box body of the electrical box of the embodiment of the present application is L-shaped, which simplifies the structure of the electrical box and helps reduce the material cost of the electrical box compared to the square box structure with an open top. Among them, the limiter and the third substrate are detachable, and when only the limiter is detached, the three-phase drive board and the variable frequency drive required for the three-phase drive board can be installed, and when only the third substrate is detached, the single-phase drive board can be installed, so that the electrical box of the embodiment of the present application can be compatible with the three-phase drive board and the single-phase drive board, thereby helping to reduce the production cost of the electrical box and improve the production efficiency of the electrical box.

[0007] According to some embodiments of the present application, the limiting member is entirely located within the first avoidance opening, and a fragile connection structure that can be destroyed by external force is integrally formed between the edge of the limiting member and the inner wall of the first avoidance opening.

[0008] According to some embodiments of the present application, there is a gap between the edge of the limiting member and the inner wall of the first avoidance opening, and the fragile connection structure includes at least two fragile connection parts integrally formed between the edge of the limiting member and the inner wall of the first avoidance opening, and all of the fragile connection parts are spaced apart along the edge of the limiting member, and the fragile connection parts can break under the action of external force.

[0009] According to some embodiments of the present application, a second folded edge parallel to the second substrate is provided at one end of the first folded edge away from the third substrate, and the second folded edge is connected to the second substrate by screws.

[0010] According to some embodiments of the present application, reinforcing ribs are provided on both the first substrate and the second substrate.

[0011] According to some embodiments of the present application, a third avoidance opening is provided at the edge of the third substrate to facilitate wiring of the three-phase drive board.

[0012] According to the heat pump unit of the second aspect embodiment of the present application, it includes an electrical box according to the above-mentioned first aspect embodiment of the present application, and the heat pump unit also includes a shell, and the shell has a middle partition, and the middle partition divides the space inside the shell into a heat exchange area and an electrical area. The electrical box is arranged in the electrical area, and two hooks distributed along the vertical interval are arranged on the inner side wall of the electrical area corresponding to the first substrate or the second substrate. The upper part of the electrical box body is provided with a hanging hole, and the hanging hole is cooperated and connected with the hook located above, and the hook located below is supported on the lower edge of the electrical box body.

[0013] According to some embodiments of the present application, the hook portions of the two hooks are connected to the electrical box body by screws.

[0014] According to some embodiments of the present application, a side of the first substrate away from the second substrate and a side of the second substrate away from the first substrate are both connected to the housing by screws.

[0015] According to some embodiments of the present application, the electrical area has an inner side wall parallel to the second substrate, a gap for accommodating other components is provided between the inner side wall and the second substrate, and a support rod is provided between the second substrate and the inner side wall.

[0016] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 This is a schematic diagram of the structure of the electrical box of one embodiment of the present application when the limiting member and the third substrate are not removed;

[0019] Figure 2 This is a schematic diagram of the structure of the electrical box of one embodiment of the present application when only the third substrate is removed;

[0020] Figure 3 yes Figure 2 A partial enlarged schematic diagram in the middle;

[0021] Figure 4 This is a schematic diagram of the structure of the electrical box of one embodiment of the present application when the limiting member and the third substrate are removed;

[0022] Figure 5 It is a structural schematic diagram of a third substrate in an electrical appliance box according to an embodiment of the present application;

[0023] Figure 6 This is a schematic diagram of the structure of an electrical box installed with a three-phase drive board and a variable frequency drive according to an embodiment of the present application;

[0024] Figure 7 This is a structural schematic diagram of an electrical box of an embodiment of the present application when a single-phase drive board is installed;

[0025] Figure 8 It is a partial structural schematic diagram of a heat pump unit according to an embodiment of the present application;

[0026] Fig. 9 yes Figure 8 A schematic diagram of a local structure of the structure shown;

[0027] Fig.10 is a partial structural schematic diagram of a heat pump unit from another perspective of an embodiment of the present application;

[0028] Fig.11 yes Fig.10 A schematic diagram of a local structure of the structure shown;

[0029] Fig.12 yes Figure 8 An exploded schematic diagram of the structure shown;

[0030] Fig.13 yes Fig.12 Schematic diagram of the partial structure of the structure shown.

[0031] Reference numerals:

[0032] Three-phase drive board a, single-phase drive board b, frequency conversion driver c, electrical box body 100, first substrate 110, second substrate 120, first avoidance opening 121, limiter 122, second avoidance opening 123, fragile connection part 124, hanging hole 125, reinforcing rib 130, third substrate 200, first folded edge 210, second folded edge 211, third avoidance opening 220, shell 300, middle partition 310, third folded edge 311, hook 3111, heat exchange area 320, electrical area 330, support rod 400. DETAILED DESCRIPTION

[0033] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0034] In the description of the present application, it should be understood that if orientation descriptions are involved, the orientations or positional relationships indicated, such as up, down, front, back, left, and right, are based on the orientations or positional relationships shown in the accompanying drawings. This is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present application.

[0035] In the description of this application, if the words "some", "greater than", "less than", "exceed", "above", "below", "within" etc. appear, "some" means one or more, "more" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number, and "above", "below", "within", etc. are understood to include the number.

[0036] In the description of this application, if the words "first", "second", etc. appear, they are only used to distinguish technical features and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0037] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0038] Traditional heat pump units usually have an electrical box for accommodating an electric control device, and the traditional electrical box is usually a square box structure with an open top, which is usually fixed to the inner top of the heat pump unit housing during assembly. However, the material cost of this traditional electrical box structure is high and the structure is relatively complex, which makes the production and processing cost high and the production and processing efficiency low. In addition, the electric control device contained in the electrical box usually includes a three-phase drive board (need to be equipped with a variable frequency drive) or a single-phase drive board (no need to be equipped with a variable frequency drive), wherein, due to the difference in specifications between the three-phase drive board and the single-phase drive board, which is mainly reflected in the difference in size of the heat dissipation module protruding from the rear side of the three-phase drive board and the heat dissipation module protruding from the rear side of the single-phase drive board, it is necessary to design electrical boxes of different specifications for the three-phase drive board and the single-phase drive board, respectively, which increases the production cost of the electrical box and reduces the production efficiency of the electrical box. For this reason, it is urgent to improve the relevant structure of the existing heat pump unit to solve the above-mentioned technical problems. The optimized electrical box and heat pump unit of the present application will be described in detail below in conjunction with the accompanying drawings.

[0039] Reference Figures 1 to 7 According to an embodiment of the present application, the electrical box is used for a heat pump unit and includes: an electrical box body 100 , a limiting member 122 and a third substrate 200 .

[0040] Specifically, the electrical box body 100 includes a first substrate 110 and a second substrate 120, the first substrate 110 and the second substrate 120 are connected to make the electrical box body 100 L-shaped, the second substrate 120 is used to install one of the three-phase drive board a and the single-phase drive board b, and the second substrate 120 is provided with a first avoidance opening 121 that penetrates the second substrate 120, the first avoidance opening 121 is adapted to the heat dissipation module protruding from the rear side of the three-phase drive board a, and the limiter 122 is detachably connected to the second substrate 120 and is at least partially located at the first avoidance opening 121. The portion of the limiting member 122 located in the first avoidance opening 121 and the portion of the inner wall of the first avoidance opening 121 are enclosed to form a second avoidance opening 123, and the second avoidance opening 123 is adapted to the heat dissipation module protruding on the rear side of the single-phase drive board b. At least two first folded edges 210 are arranged at intervals at the edge of the third substrate 200, and the first folded edges 210 are detachably connected to the second substrate 120, so that there is an installation space between the third substrate 200 and the second substrate 120 for avoiding the three-phase drive board a, and the third substrate 200 is used to install the variable frequency drive c.

[0041] The electrical box body 100 of the electrical box of the embodiment of the present application is L-shaped, which simplifies the structure of the electrical box and helps reduce the material cost of the electrical box compared to the square box structure with an open top. Among them, the limiter 122 and the third substrate 200 are detachable. When only the limiter 122 is removed, the three-phase drive board a and the variable frequency drive c required for the three-phase drive board a can be installed. When only the third substrate 200 is removed, the single-phase drive board b can be installed, so that the electrical box of the embodiment of the present application can be compatible with the three-phase drive board a and the single-phase drive board b, which helps reduce the production cost of the electrical box and improve the production efficiency of the electrical box.

[0042] Specifically, when installing the three-phase drive board a, the heat dissipation module protruding on the rear side of the three-phase drive board a is inserted into the first avoidance opening 121, which not only can position the three-phase drive board a, but also can simplify the structure inside the electrical box for installing the three-phase drive board a; when installing the single-phase drive board b, the heat dissipation module protruding on the rear side of the single-phase drive board b is inserted into the second avoidance opening 123, which not only can position the single-phase drive board b, but also can simplify the structure inside the electrical box for installing the single-phase drive board b.

[0043] It should be noted that, in some other embodiments, the second avoidance opening 123 may also be independently formed at the portion of the limiting member 122 located inside the first avoidance opening 121 .

[0044] It should be noted that, in some of the embodiments, the first substrate 110 and the second substrate 120 are integrally formed and perpendicular to each other. Of course, the first substrate 110 and the second substrate 120 may also be independent components. In this case, the first substrate 110 and the second substrate 120 may be welded together or connected by screws or a snap-on structure, which is not limited here.

[0045] It should be noted that in some of the embodiments, the edges of the first substrate 110, the second substrate 120, the third substrate 200 and the first folded edge 210 are all provided with folded edges for improving structural rigidity. The folded edges for improving structural rigidity can also be replaced by pressed edges. Of course, folded edges and pressed edges can also be provided at the same time to improve structural rigidity, which is not limited here.

[0046] It should be noted that in some of the embodiments, screw holes for installing the three-phase drive board a and the single-phase drive board b are simultaneously opened on the second substrate 120, so that both the three-phase drive board a and the single-phase drive board b can be installed on the second substrate 120 by screws. Of course, the three-phase drive board a and the single-phase drive board b can also be installed on the second substrate 120 by a snap-on structure, which is not limited here.

[0047] It should be noted that, in some of the embodiments, the main portion of the third substrate 200 is provided with mounting columns for connecting screws so that the variable frequency drive c can be installed on the third substrate 200 by screws. Of course, the variable frequency drive c can also be installed on the third substrate 200 by a snap-on structure, which is not limited here.

[0048] It should be noted that in some embodiments, the stopper 122 is entirely located in the first avoidance opening 121, and a fragile connection structure that can be destroyed by external force is formed between the edge of the stopper 122 and the inner wall of the first avoidance opening 121, that is, the stopper 122 is formed integrally with the second substrate 120 through the fragile connection structure, so that the stopper 122 and the second substrate 120 can be processed and formed at one time, which is conducive to simplifying the processing steps of the electrical box body 100. When it is necessary to remove the stopper 122, external force is applied to destroy the fragile connection structure.

[0049] Reference Figure 2 and Figure 3 In some embodiments, there is a gap between the edge of the limit member 122 and the inner wall of the first avoidance opening 121, and the fragile connection structure includes at least two fragile connection parts 124 integrally formed between the edge of the limit member 122 and the inner wall of the first avoidance opening 121. All the fragile connection parts 124 are distributed at intervals along the edge of the limit member 122. The fragile connection parts 124 can be broken under the action of external force, and the structure is simple and easy to implement.

[0050] It should be noted that, in some other embodiments, the fragile connection structure can also be an annular connection portion integrally formed between the edge of the limit member 122 and the inner wall of the first avoidance opening 121, and the annular connection portion is processed with a cut so that the annular connection portion can be destroyed when subjected to external force.

[0051] It should be noted that, in some other embodiments, the limiting member 122 may also be connected to the second substrate 120 by screws.

[0052] Reference Figure 1 and Figure 5 In some embodiments, a second folded edge 211 parallel to the second substrate 120 is provided at one end of the first folded edge 210 away from the third substrate 200, and the second folded edge 211 is connected to the second substrate 120 by screws, and the structure is simple and easy to implement. Specifically, the second folded edge 211 and the corresponding positions on the second substrate 120 are both provided with mounting holes for connecting screws.

[0053] It should be noted that, in some other embodiments, the first folded edge 210 may also be connected to the second substrate 120 via a snap-fit ​​structure.

[0054] Reference Figure 1 , Figure 2 and Figure 4 In some of the embodiments, reinforcing ribs 130 are disposed on both the first substrate 110 and the second substrate 120 , thereby facilitating improving the structural strength of the electrical box body 100 .

[0055] Reference Figure 5 In some of the embodiments, a third avoidance opening 220 is provided at the edge of the third substrate 200 to facilitate wiring of the reactor (or other electronic components that need to be wired) on the three-phase drive board a, thereby helping to reduce wiring difficulty.

[0056] Reference Figures 8 to 13 According to the heat pump unit of the embodiment of the present application, it includes the above-mentioned electrical box, and the heat pump unit also includes a housing 300, and the housing 300 has a middle partition 310, and the middle partition 310 divides the space inside the housing 300 into a heat exchange area 320 and an electrical area 330. The electrical box is arranged in the electrical area 330, and two hooks 3111 distributed along the vertical interval are arranged on the inner side wall of the electrical area 330 corresponding to the first substrate 110 or the second substrate 120. The upper part of the electrical box body 100 is provided with a hanging hole 125, and the hanging hole 125 is connected with the hook 3111 located at the top, and the hook 3111 located at the bottom is supported on the lower edge of the electrical box body 100. When installing the electrical box, the electrical box body 100 is fixed by the hook 3111, which is conducive to reducing the difficulty of installing the electrical box.

[0057] It should be noted that in some embodiments, the hooks of the two hooks 3111 are connected to the electrical box body 100 by screws, which is conducive to improving the stability of the electrical box after assembly. Specifically, the hooks of the hooks 3111 and the corresponding positions on the electrical box body 100 are provided with mounting holes for connecting screws.

[0058] Reference Figure 8 , Fig. 9 , Fig.12 and Fig.13 In some embodiments, a third folded edge 311 parallel to the second substrate 120 is provided at the edge of the middle partition 310, a hook 3111 located at the top is provided on the third folded edge 311, a hanging hole 125 is provided on the second substrate 120, and a hook 3111 located at the bottom is supported on the lower edge of the second substrate 120, and the hook portions of the two hooks 3111 are connected to the second substrate 120 by screws.

[0059] It should be noted that, in some other embodiments, the hook 3111 located above can also be arranged on the main part of the middle partition 310. Correspondingly, the hanging hole 125 is arranged on the first substrate 110, and the hook 3111 located below is supported on the lower edge of the first substrate 110. The hook parts of the two hooks 3111 are connected to the first substrate 110 by screws.

[0060] It should be noted that in some of the embodiments, the side of the first substrate 110 away from the second substrate 120 and the side of the second substrate 120 away from the first substrate 110 are both connected to the housing 300 by screws, which is beneficial to improve the stability of the electrical box after assembly. Specifically, the side of the first substrate 110 away from the second substrate 120, the side of the second substrate 120 away from the first substrate 110, and the corresponding positions on the housing 300 are all provided with mounting holes for connecting screws.

[0061] Reference Fig.10 and Fig.11 In some embodiments, the electrical area 330 has an inner side wall parallel to the second substrate 120, and there is a gap between the inner side wall and the second substrate 120 for accommodating other components. A support rod 400 is provided between the second substrate 120 and the inner side wall, which is beneficial to improve the stability of the electrical box after assembly, wherein the inner side wall fixes one end of the support rod 400 by screws, and the second substrate 120 fixes the other end of the support rod 400 by screws, and the structure is simple and easy to implement. Specifically, the two end faces of the support rod 400, the corresponding positions on the above-mentioned inner side wall, and the corresponding positions on the second substrate 120 are all provided with mounting holes for connecting screws. Of course, the support rod 400 can also be fixed by welding or a clamping structure, which is not limited here.

[0062] In the description of this specification, if the description involves reference terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples" and "some examples", it means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0063] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. An electrical box, characterized in that: For heat pump units, including: An electrical box body (100), the electrical box body (100) comprising a first substrate (110) and a second substrate (120), the first substrate (110) and the second substrate (120) being connected so that the electrical box body (100) is L-shaped, the second substrate (120) being used to mount one of a three-phase drive board and a single-phase drive board, the second substrate (120) being provided with a first avoidance opening (121) penetrating the second substrate (120), the first avoidance opening (121) being adapted to a heat dissipation module protruding from the rear side of the three-phase drive board; a limiting member (122), the limiting member (122) being detachably connected to the second substrate (120) and at least partially located in the first avoidance opening (121); the portion of the limiting member (122) located in the first avoidance opening (121) and a portion of the inner wall of the first avoidance opening (121) are combined to form a second avoidance opening (123); or the portion of the limiting member (122) located in the first avoidance opening (121) is independently formed with a second avoidance opening (123); the second avoidance opening (123) is adapted to a heat dissipation module protruding from the rear side of the single-phase drive plate; A third substrate (200), wherein at least two first folded edges (210) are arranged at an edge thereof and are spaced apart from each other, and wherein the first folded edges (210) are detachably connected to the second substrate (120) so that there is an installation space between the third substrate (200) and the second substrate (120) for avoiding an installation of a three-phase drive board, and the third substrate (200) is used for installing a variable frequency drive.

2. The electrical box according to claim 1, characterized in that: The limiting member (122) is entirely located within the first avoidance opening (121), and a fragile connection structure that can be destroyed by external force is integrally formed between the edge of the limiting member (122) and the inner wall of the first avoidance opening (121).

3. The electrical box according to claim 2, characterized in that: There is a gap between the edge of the limiting member (122) and the inner wall of the first avoidance opening (121), and the fragile connection structure comprises at least two fragile connection parts (124) integrally formed between the edge of the limiting member (122) and the inner wall of the first avoidance opening (121), and all of the fragile connection parts (124) are distributed at intervals along the edge of the limiting member (122), and the fragile connection parts (124) can be broken under the action of external force.

4. The electrical box according to claim 1, characterized in that: A second folded edge (211) parallel to the second substrate (120) is provided at one end of the first folded edge (210) away from the third substrate (200), and the second folded edge (211) is connected to the second substrate (120) by means of screws.

5. The electrical box according to claim 1, characterized in that: Reinforcing ribs (130) are provided on both the first substrate (110) and the second substrate (120).

6. The electrical box according to claim 1, characterized in that: A third avoidance opening (220) is provided at the edge of the third substrate (200) to facilitate wiring of the three-phase drive board.

7. A heat pump unit, characterized in that: The heat pump unit comprises an electrical box as claimed in any one of claims 1 to 6, wherein the heat pump unit further comprises a shell (300), wherein the shell (300) has a middle partition (310), wherein the middle partition (310) divides the space inside the shell (300) into a heat exchange zone (320) and an electrical zone (330), wherein the electrical box is arranged in the electrical zone (330), and wherein two hooks (3111) are arranged on the inner side wall of the electrical zone (330) corresponding to the first substrate (110) or the second substrate (120) and distributed along the vertical interval, wherein a hanging hole (125) is arranged on the upper part of the electrical box body (100), wherein the hanging hole (125) is cooperated and connected with the hook (3111) located at the upper part, and the hook (3111) located at the lower part is supported on the lower edge of the electrical box body (100).

8. The heat pump unit according to claim 7, characterized in that: The hook parts of the two hooks (3111) are connected to the electrical box body (100) by screws.

9. The heat pump unit according to claim 7, characterized in that: A side of the first substrate (110) away from the second substrate (120) and a side of the second substrate (120) away from the first substrate (110) are both connected to the housing (300) by means of screws.

10. The heat pump unit according to claim 7, characterized in that: The electrical area (330) has an inner side wall parallel to the second substrate (120), a gap for accommodating other components is provided between the inner side wall and the second substrate (120), and a support rod (400) is provided between the second substrate (120) and the inner side wall.

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