Waterproof structure and assembly method of electrical box of air source heat pump

Abstract

The present invention discloses a waterproof structure and assembly method for an electrical box of an air source heat pump. The waterproof structure of the electrical box of the air source heat pump includes a bottom plate, a middle partition, a drainage beam, a side baffle assembly, an air guide assembly, an electrical box and a cover plate. The bottom plate, the side baffle assembly and the cover plate surround the peripheral structure, the middle partition divides the internal space into a heat exchange area and an electrical area, the drainage beam is used to guide rainwater that has seeped into the electrical area to the heat exchange area, the air guide assembly is used to guide external air into the heat exchange area, and the electrical box is used to house electrical components. The present invention makes the structure more compact by making the heat exchanger a part of the side wall, which can both achieve a supporting function and perform heat exchange work, and divides the internal space into a heat exchange area and an electrical area by the middle partition, reducing the impact of external moisture on the electrical components; a drainage beam is provided at the joint between the cover plate, the wind baffle and the electrical panel, which can guide rainwater that has seeped into the outside to the heat exchange area and accelerate drying by the wind power of the fan.

Description

Technical Field

[0001] The invention relates to a waterproof structure and an assembly method of an electrical appliance box of an air source heat pump in the technical field of air source heat pumps. Background Art

[0002] An air source heat pump is an energy-saving device that uses high-grade energy to transfer heat from a low-grade heat source, air, to a higher-grade heat source. This device converts low-grade heat energy that cannot be directly utilized (such as heat contained in air, soil, and water) into usable high-grade heat energy, thereby saving some high-grade energy (such as coal, gas, oil, and electricity). It operates on the reverse Carnot cycle principle, driven by electricity. It effectively absorbs unusable low-grade heat energy from the air through a heat transfer medium, then raises the absorbed heat energy to usable high-grade heat energy and releases it into the water.

[0003] Therefore, to ensure adequate contact with the outside air, air-source heat pumps often need to be installed outdoors in an open area. Currently, the most common waterproof structure for the electrical box of an air-source heat pump utilizes a box-shaped enclosure to protect the internal electrical components. To facilitate transportation and on-site assembly, the box-shaped enclosure is typically constructed from multiple steel plates. After four side panels form the four walls of the box-shaped enclosure, a cover is installed on top to complete the enclosure, using a traditional top-down assembly method for securing.

[0004] However, facing harsh outdoor environments, the current air-source heat pump casing structure is inevitably prone to rust and wear, resulting in leaks at the joints of the steel plates. In rainy and snowy weather, rainwater can enter the air-source heat pump through these leaks, damaging the electrical components. The joints between the top cover and the side panels are particularly susceptible to corrosion and leakage. Moreover, current air-source heat pumps are often large in size, making them difficult to install in urban areas with limited space or high requirements for space utilization. Therefore, the compact design of the air-source heat pump structure is also a technical problem that needs to be solved urgently. Summary of the Invention

[0005] The purpose of the present invention is to solve at least one of the technical problems existing in the prior art and to provide a waterproof structure and assembly method for the electrical box of an air source heat pump, which can reduce the damage caused by water seepage at leakage points to internal electrical components and reduce the footprint of the air source heat pump.

[0006] According to a first embodiment of the present invention, there is provided a waterproof structure for an electrical box of an air source heat pump, comprising:

[0007] a bottom plate, wherein a heat exchange area and an electrical area are divided on the bottom plate;

[0008] a middle partition plate connected to the bottom plate and arranged at the junction of the heat exchange area and the electrical area to separate the two areas;

[0009] a drainage beam extending parallel to a first direction toward both ends to connect the heat exchange area and the electrical area, the drainage beam comprising a first wing plate located in the heat exchange area, a second wing plate located in the electrical area, and drainage grooves extending to both ends of the drainage beam, the first wing plate and the second wing plate both being bent toward a second direction and suspended above the drainage grooves, the drainage grooves being provided with a plurality of drainage holes connected to the heat exchange area;

[0010] A side baffle assembly is mounted on the bottom plate, comprising a heat exchanger, a column, an air deflector, an electrical panel, and a side panel. The heat exchanger, the column, the air deflector, the electrical panel, and the side panel are sequentially assembled to enclose an accommodation space. The heat exchanger, the column, and the air deflector are all located in the heat exchange area, and the electrical panel and the side panel are all located in the electrical area.

[0011] The two ends of the drainage beam are respectively connected to the column and the side plate; the wind deflector is provided with a third wing plate abutting the first wing plate on the drainage beam; the electrical panel is provided with a fourth wing plate abutting the second wing plate on the drainage beam; the first wing plate and the third wing plate, as well as the second wing plate and the fourth wing plate, are fixed to each other by bolts;

[0012] An air guide assembly, comprising an air guide bracket, a motor, and a fan. The air guide bracket is connected to the base plate and disposed in the heat exchange area. The motor is connected to the air guide bracket and drives the fan to rotate. The fan can drive external air to enter through the air guide holes reserved on the air guide plate to exchange heat with the heat exchanger.

[0013] an electrical box connected to the middle partition and arranged in the electrical area for housing electrical components;

[0014] A cover plate is installed on the top of the side baffle assembly to close the accommodating space, and a joint seam between the cover plate and the air guide plate and a joint seam between the cover plate and the electrical panel are both located above the drainage groove.

[0015] According to an embodiment of the first aspect of the present invention, further, the middle partition is provided with a "C"-shaped installation groove, and the drainage beam is provided with a convex structure adapted to the shape of the installation groove, and the convex structure is plugged into the installation groove and fixed to each other by bolts.

[0016] According to an embodiment of the first aspect of the present invention, further, the middle partition is provided with a step at the bottom of the installation groove, and the step abuts against the bottom of the drainage beam to provide auxiliary support.

[0017] According to an embodiment of the first aspect of the present invention, further, the electrical panel is provided with a plurality of L-shaped clips, the clipping ends of the L-shaped clips extend along a third direction, and the middle partition plate and the side panels are provided with clip grooves that can be clipped with the clipping ends of the L-shaped clips.

[0018] According to an embodiment of the first aspect of the present invention, further, the clamping end is provided with a bevel, the clamping end transitions from the first surface to the second surface along the second direction, and both sides of the bevel are connected to the first surface and the end face of the clamping end.

[0019] According to an embodiment of the first aspect of the present invention, further, the heat exchanger is specifically a fin heat exchanger, and a plurality of heat exchange elbows are provided on both sides of the fin heat exchanger, and the heat exchange elbows are used to exchange heat with a heat transfer medium.

[0020] According to an embodiment of the first aspect of the present invention, further, the fin heat exchanger has an "L"-shaped structure.

[0021] According to an embodiment of the first aspect of the present invention, further, the number of the air guide plates is at least two, and each of the air guide plates is stacked and spliced ​​along a third direction. The number of the motors and the fans is consistent with the number of the air guide plates and is arranged in a one-to-one correspondence.

[0022] According to an embodiment of the first aspect of the present invention, further, the air guide plate extends a fifth wing plate along the first direction, and the fifth wing plate is in contact with the surface of the middle partition plate and fixed to each other by bolts.

[0023] According to a second aspect of the present invention, there is provided a method for assembling a waterproof structure of an electrical box based on the air source heat pump, comprising:

[0024] Installing the middle partition, the heat exchanger, the columns and the side panels on the bottom plate, and connecting the heat exchanger to the pipeline of the external heat transfer medium;

[0025] Placing the drainage beam along a first direction, with both ends of the drainage beam being threadedly connected to the column and the side plate respectively;

[0026] Mounting the electrical box to the middle partition, and placing electrical components in the electrical box;

[0027] Connecting the motor and the air guide bracket and installing them to the base plate;

[0028] Installing the cover plate to the top of the middle partition plate, the heat exchanger, the columns and the side plates;

[0029] Place the third wing of the wind deflector against the first wing of the drainage beam, push the wind deflector in a first direction to a locking position, and lock the wind deflector to the drainage beam with bolts;

[0030] Installing the fan to the output shaft of the motor through the air guide hole of the air guide plate;

[0031] The two sides of the electrical panel are respectively pressed against the middle partition and the side panel, and the electrical panel is pushed along the third direction until the second wing plate is in contact with the fourth wing plate, and the electrical panel is locked to the drainage beam by bolts.

[0032] The beneficial effects of the embodiments of the present invention include at least: the present invention makes the waterproof structure of the electrical box of the air source heat pump more compact by using the heat exchanger as part of the side wall, which realizes both the supporting function and the heat exchange work, and divides the internal space of the waterproof structure of the electrical box of the air source heat pump into a heat exchange area and an electrical area through a middle partition, thereby reducing the impact of external moisture on electrical components; a drainage beam is provided at the joint between the cover plate, the wind shield and the electrical panel, which can guide rainwater seeping from the outside to the heat exchange area and accelerate drying through the wind power of the fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly describes the drawings required for describing the embodiments. Obviously, the drawings described only illustrate some embodiments of the present invention, not all of them. Those skilled in the art can derive other design solutions and drawings based on these drawings without inventive effort.

[0034] Figure 1 3-D view of the middle partition in the waterproof structure of the electrical box of the air source heat pump according to the first embodiment of the present invention;

[0035] Figure 2 The three-view and three-dimensional drawings of the drainage beam in the waterproof structure of the electrical box of the air source heat pump according to the first embodiment of the present invention;

[0036] Figure 3 3. It is a three-view drawing of the air guide plate in the waterproof structure of the electrical box of the air source heat pump according to the first embodiment of the present invention;

[0037] Figure 4 3. It is a three-view drawing of the electrical panel in the waterproof structure of the electrical box of the air source heat pump according to the first embodiment of the present invention;

[0038] Figure 5 1 is an assembly diagram of the first step in the assembly method of the embodiment of the second aspect of the present invention;

[0039] Figure 61 is an assembly schematic diagram of the second step in the assembly method of the embodiment of the second aspect of the present invention;

[0040] Figure 7 1 is an assembly diagram of the third step in the assembly method of the embodiment of the second aspect of the present invention;

[0041] Figure 8 1 is an assembly diagram of the fourth step in the assembly method of the embodiment of the second aspect of the present invention;

[0042] Figure 9 1 is an assembly diagram of the fifth step in the assembly method of the embodiment of the second aspect of the present invention;

[0043] Figure 10 1 is an assembly diagram of the sixth step in the assembly method of the embodiment of the second aspect of the present invention;

[0044] Figure 11 It is an assembly schematic diagram of the seventh step in the assembly method of the embodiment of the second aspect of the present invention.

[0045] Reference numerals: 100-bottom plate, 110-heat exchange area, 120-electrical area, 200-middle partition, 210-mounting groove, 211-step, 300-drainage beam, 310-first wing plate, 320-second wing plate, 330-drainage groove, 331-drainage hole, 340-convex structure, 400-side baffle assembly, 410-heat exchanger, 420-column, 430-air guide plate, 431- The third wing plate, 432-air guide hole, 433-fifth wing plate, 440-electrical panel, 441-fourth wing plate, 442-L-shaped buckle, 4421-clamping end, 4422-slant, 4423-first surface, 4424-second surface, 450-side panel, 500-air guide assembly, 510-air guide bracket, 520-fan, 600-electrical box, 700-cover plate, 800-card slot. DETAILED DESCRIPTION

[0046] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it should not be understood as a limitation on the scope of protection of the present invention.

[0047] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do 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, they cannot be understood as limitations on the present invention.

[0048] In the description of the present invention, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0049] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting 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 the present invention based on the specific content of the technical solution.

[0050] Reference Figures 5 to 11 The electrical box waterproof structure of the air source heat pump in the embodiment of the first aspect of the present invention includes a bottom plate 100, a middle partition plate 200, a drainage beam 300, a side baffle assembly 400, an air guide assembly 500, an electrical box 600 and a cover plate 700. Figure 5 The base plate 100 is divided into a heat exchange area 110 and an electrical area 120. The heat exchange area 110 is used for exchanging heat with the outside air and therefore has an open structure. The electrical area 120 houses the electrical components of the air-source heat pump and therefore requires a sealed structure to prevent external water infiltration. The middle partition 200 is connected to the base plate 100 and is located at the junction of the heat exchange area 110 and the electrical area 120 to separate the two areas and prevent them from interfering with each other.

[0051] The side baffle assembly 400 is mounted on the base plate 100 and forms the side baffle structure of this air-source heat pump. It includes a heat exchanger 410, columns 420, air deflectors 430, an electrical panel 440, and side panels 450. The heat exchanger 410, columns 420, air deflectors 430, electrical panel 440, and side panels 450 are sequentially assembled to enclose a housing. The heat exchanger 410, columns 420, and air deflectors 430 are all located in the heat exchange area 110, while the electrical panel 440 and side panels 450 are both located in the electrical area 120.

[0052] The drainage beam 300 is parallel to the first direction x and extends to both ends to connect the heat exchange area 110 and the electrical area 120. Figure 2 The drainage beam 300 includes a first wing 310, a second wing 320, and a drainage groove 330. Both the first wing 310 and the second wing 320 are folded and extended in the second direction y, suspended above the drainage groove 330. During installation, the first wing 310 is located in the heat exchange area 110, and the second wing 320 is located in the electrical area 120. The drainage groove 330 is provided with multiple drainage holes 331 that connect to the heat exchange area. If rainwater seeps in, it can flow through the drainage groove 330 and enter the heat exchange area 110 through the drainage holes 331, accelerating evaporation.

[0053] As for the connection method of the drainage beam 300, the two ends of the drainage beam 300 are respectively connected to the column 420 and the side plate 450, and are fixed by bolts. The wind deflector 430 is provided with a third wing plate 431, which can be attached to the first wing plate 310 and fixed by bolts (refer to Figure 10 The electrical panel 440 is provided with a fourth wing plate 441, which can be attached to the second wing plate 320 and fixed by bolts (refer to Figure 11 ).

[0054] The air guide assembly 500 is used to increase wind speed to improve heat exchange efficiency. It includes an air guide bracket 510, a motor, and a fan 520. The air guide bracket 510 is connected to the base plate 100 and is located in the heat exchange area 110. The motor is connected to the air guide bracket 510 and drives the fan 520 via an output shaft. The blades on the fan 520 drive the air flow, allowing external air to enter the heat exchange area 110 through the air guide holes 432 reserved in the air guide plate 430, and exchange heat with the heat exchanger 410 in the heat exchange area 110.

[0055] The electrical box 600 is connected to the middle partition 200 and is disposed in the electrical area 120 for loading electrical components and further protecting the electrical components.

[0056] The cover plate 700 is installed on the top of the side baffle assembly 400 to enclose the accommodating space. It is worth noting that the joints between the cover plate 700 and the wind guide plate 430 and the joints between the cover plate 700 and the electrical panel 440 are both located above the drainage groove 330, so that when external rainwater seeps in from the joints, it can drip into the drainage groove 330 and flow from the drainage hole 331 to the heat exchange area 110 for evaporation.

[0057] Further, refer to Figure 1 The middle partition 200 is provided with a C-shaped mounting groove 210. The drain beam 300 is also provided with a protruding structure 340 that matches the shape of the mounting groove 210. This provides a guide for assembly during installation of the drain beam 300. After installation, the connection between the mounting groove 210 and the protruding structure 340 also serves as a position limiter for the drain beam 300. During installation, the protruding structure 340 and the mounting groove 210 are secured to each other using bolts.

[0058] Furthermore, the middle partition 200 is further provided with a step 211 at the bottom of the installation groove 210 , which is specifically formed by bending a portion of the plate of the middle partition 200 and can abut against the bottom of the drainage beam 300 for auxiliary support.

[0059] Further, refer to Figure 4, a plurality of L-shaped clips 442 are provided on the electrical panel 440, and the snap-on ends 4421 of the L-shaped clips 442 extend along the third direction z, and snap-on grooves 800 that can be snapped with the L-shaped clips 442 are provided on the middle partition 200 and the side panel 450, so that when the snap-on ends 4421 of the L-shaped clips 442 are inserted into the snap-on grooves 800 along the third direction z, the two can be fixed.

[0060] Furthermore, the engaging end 4421 is provided with an inclined surface 4422. The engaging end 4421 transitions from the first surface 4423 to the second surface 4424 along the second direction y. Both sides of the inclined surface 4422 are connected to the first surface 4423 and the end surface of the engaging end 4421. Therefore, if deviation occurs during installation, the inclined surface 4422 can correct the direction, allowing the engaging end 4421 to slide successfully into the engaging slot 800.

[0061] Furthermore, the heat exchanger 410 is specifically a fin heat exchanger, in which a plurality of fins are installed. The airflow flows through the gaps between the fins and fully contacts the fins during the passage to complete the heat exchange. Specifically, in some embodiments, the fin heat exchanger has an "L"-shaped structure to increase its flow area, so that it can have a high heat exchange efficiency even in the compact waterproof structure of the electrical box of the air source heat pump. A plurality of heat exchange bends are provided on both sides of the fin heat exchanger, and the heat exchange bends are in contact with the heat transfer medium. The fins transfer the heat to the heat exchange bends, and then the heat exchange bends transfer the heat to the heat transfer medium, thereby realizing heat transfer. The fin heat exchanger is a prior art, and its specific structure and working principle will not be repeated here.

[0062] Furthermore, the number of air guide plates 430 is at least two, and each air guide plate 430 is stacked and spliced ​​along the third direction z. The number of motors and fans 520 is consistent with the number of air guide plates 430 and is arranged one-to-one, so that more fans 520 can further improve the heat exchange efficiency.

[0063] Further, refer to Figure 3 The air guide plate 430 extends a fifth wing plate 433 along the first direction x, which can be attached to the surface of the middle partition plate 200 and fixed by bolts, thereby making the connection of the air guide plate 430 more stable.

[0064] The assembly method in the embodiment of the second aspect of the present invention, based on the waterproof structure of the electrical appliance box of the air source heat pump in the embodiment of the first aspect, comprises the following steps:

[0065] S100.Reference Figure 5 , install the middle partition plate 200, heat exchanger 410, column 420 and side plate 450 on the bottom plate 100, and connect the heat exchanger 410 to the pipeline of the external heat transfer medium;

[0066] S200.Reference Figure 6, place the drainage beam 300 along the first direction x, and screw the two ends of the drainage beam 300 to the columns 420 and the side plates 450 to fix the drainage beam 300. At the same time, the drainage beam 300 also abuts against the top of the middle partition 200.

[0067] S300.Reference Figure 7 , install the electrical box 600 to the middle partition 200, and place electrical components in the electrical box 600;

[0068] S400.Reference Figure 8 , connect the motor and the air guide bracket 510 and install them to the bottom plate 100 for fixing;

[0069] S500.Reference Figure 9 , install the cover plate 700 to the top of the middle partition plate 200, the heat exchanger 410, the column 420 and the side plate 450 and fix them with bolts;

[0070] S600.Reference Figure 10 , place the third wing 431 of the air deflector 430 against the first wing 310 of the drainage beam 300, and push the air deflector 430 along the first direction x to the locking position. The locking position in this application refers to a position that can be fixed with bolts through the reserved mounting holes. The air deflector 430 is locked to the drainage beam 300 with the bolts;

[0071] S700. Reference Figure 11 , install the fan 520 to the output shaft of the motor through the air guide hole 432 of the air guide plate 430;

[0072] S800. The two sides of the electrical panel 440 are respectively pressed against the middle partition 200 and the side panel 450, and the electrical panel 440 is pushed along the third direction z until the second wing plate 320 and the fourth wing plate 441 are in contact, and the electrical panel 440 and the drainage beam 300 are locked by bolts, thereby completing the assembly of the waterproof structure of the electrical box of this air source heat pump.

[0073] When it is necessary to maintain or replace the internal components of the waterproof structure of the electrical box of this air source heat pump in the future, the bolts can be unscrewed and the electrical panel 440 can be pulled out in the opposite direction of the third direction z to replace the components in the electrical area 120, or the air guide plate 430 can be pulled out in the opposite direction of the second direction y to replace the components in the heat exchange area 110.

[0074] The above is a specific description of the preferred embodiments of the present invention, but the invention is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A waterproof structure for an electrical box of an air source heat pump, characterized in that: include: a bottom plate, wherein a heat exchange area and an electrical area are divided on the bottom plate; a middle partition plate connected to the bottom plate and arranged at the junction of the heat exchange area and the electrical area to separate the two areas; a drainage beam extending parallel to a first direction toward both ends to connect the heat exchange area and the electrical area, the drainage beam comprising a first wing plate located in the heat exchange area, a second wing plate located in the electrical area, and drainage grooves extending to both ends of the drainage beam, the first wing plate and the second wing plate both being bent toward a second direction and suspended above the drainage grooves, the drainage grooves being provided with a plurality of drainage holes connected to the heat exchange area; A side baffle assembly is mounted on the bottom plate, comprising a heat exchanger, a column, an air deflector, an electrical panel, and a side panel. The heat exchanger, the column, the air deflector, the electrical panel, and the side panel are sequentially assembled to enclose an accommodation space. The heat exchanger, the column, and the air deflector are all located in the heat exchange area, and the electrical panel and the side panel are all located in the electrical area. The two ends of the drainage beam are respectively connected to the column and the side plate; the wind deflector is provided with a third wing plate abutting the first wing plate on the drainage beam; the electrical panel is provided with a fourth wing plate abutting the second wing plate on the drainage beam; the first wing plate and the third wing plate, as well as the second wing plate and the fourth wing plate, are fixed to each other by bolts; An air guide assembly, comprising an air guide bracket, a motor, and a fan. The air guide bracket is connected to the base plate and disposed in the heat exchange area. The motor is connected to the air guide bracket and drives the fan to rotate. The fan can drive external air to enter through the air guide holes reserved on the air guide plate to exchange heat with the heat exchanger. an electrical box connected to the middle partition and arranged in the electrical area for housing electrical components; a cover plate mounted on the top of the side guard assembly to close the accommodating space, wherein a joint between the cover plate and the air guide plate and a joint between the cover plate and the electrical panel are both located above the drainage groove; The middle partition is provided with a "C"-shaped mounting groove, and the drainage beam is provided with a convex structure adapted to the shape of the mounting groove, the convex structure and the mounting groove are plugged and fixed to each other by bolts; The middle partition is provided with a step at the bottom of the installation groove, and the step abuts against the bottom of the drainage beam to provide auxiliary support; The electrical panel is provided with a plurality of L-shaped clips, the clipping ends of the L-shaped clips extend along the third direction, and the middle partition plate and the side plates are both provided with clip grooves capable of being clipped with the clipping ends of the L-shaped clips; The clamping end is provided with an inclined surface, and the clamping end transitions from the first surface to the second surface along the second direction, and both sides of the inclined surface are connected to the first surface and the end surface of the clamping end.

2. The waterproof structure of the electrical box of the air source heat pump according to claim 1 is characterized in that: The heat exchanger is specifically a fin heat exchanger, and a plurality of heat exchange elbows are provided on both sides of the fin heat exchanger, and the heat exchange elbows are used to exchange heat with a heat transfer medium.

3. The waterproof structure of the electrical box of the air source heat pump according to claim 2, characterized in that: The fin heat exchanger has an "L"-shaped structure.

4. The waterproof structure of the electrical box of the air source heat pump according to claim 1 is characterized in that: The number of the air guide plates is at least two, and the air guide plates are stacked and spliced ​​along the third direction. The number of the motors and the fans is consistent with the number of the air guide plates and are arranged in a one-to-one correspondence.

5. The waterproof structure of the electrical box of the air source heat pump according to claim 1, characterized in that: The air guide plate extends along the first direction to form a fifth wing plate, and the fifth wing plate is in contact with the surface of the middle partition plate and fixed to each other by bolts.

6. An assembly method based on the waterproof structure of the electrical box of the air source heat pump according to any one of claims 1 to 5, characterized in that: Installing the middle partition, the heat exchanger, the columns and the side panels on the bottom plate, and connecting the heat exchanger to the pipeline of the external heat transfer medium; Placing the drainage beam along a first direction, with both ends of the drainage beam being threadedly connected to the column and the side plate respectively; Mounting the electrical box to the middle partition, and placing electrical components in the electrical box; Connecting the motor and the air guide bracket and installing them to the base plate; Installing the cover plate to the top of the middle partition plate, the heat exchanger, the columns and the side plates; Place the third wing of the wind deflector against the first wing of the drainage beam, push the wind deflector in a first direction to a locking position, and lock the wind deflector to the drainage beam with bolts; Installing the fan to the output shaft of the motor through the air guide hole of the air guide plate; The two sides of the electrical panel are respectively pressed against the middle partition and the side panel, and the electrical panel is pushed along the third direction until the second wing plate is in contact with the fourth wing plate, and the electrical panel is locked to the drainage beam by bolts.

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