A housing structure for an air source heat pump and the air source heat pump thereof

Abstract

This utility model relates to the field of air source heat pump design, and more particularly to a housing structure for an air source heat pump and the air source heat pump itself. It includes an assembly housing, a hollow base frame, an air inlet hood, a filter element, and a rain shield. Convection windows are provided on both sides of the upper part of the assembly housing. Hollow base frames are symmetrically arranged on both sides of the bottom of the assembly housing. An air inlet hood is connected to the top of the assembly housing, and a filter element is installed inside the top of the air inlet hood. A rain shield is connected to the top of the assembly housing corresponding to the outer perimeter of the air inlet hood. The rain shield has a recessed structure on its upper part, and a gap is left between the bottom of the rain shield and the top of the air inlet hood for air to enter. This utility model uses the annular gap at the bottom of the rain shield combined with a conical water guide plate to form an airflow channel. While ensuring the air intake volume, it achieves rain and snow separation through the centrifugal effect of the conical surface. The water guide plate and the drain pipe form a directional drainage path, completely preventing liquid from intruding into the heat exchange core area.

Description

Technical Field

[0001] This utility model relates to the field of air source heat pump design, and in particular to a housing structure for an air source heat pump and the air source heat pump thereof. Background Technology

[0002] An air source heat pump is a thermal energy device that uses high-grade energy (such as electricity) to absorb low-grade heat from the ambient air and transfer it to a higher-temperature region. Its core principle is the reverse Carnot cycle, which achieves the transfer of heat from low-temperature air to high-temperature medium through the phase change cycle of the refrigerant.

[0003] Traditional equipment uses a flat-top rainproof design, allowing rain and snow to easily enter the evaporator with the airflow, causing the heat exchange fins to freeze and become blocked. The continuous accumulation of sludge formed by the mixture of moisture and dust significantly reduces the evaporator's heat exchange efficiency, forcing the compressor to frequently start and stop to maintain operating conditions and accelerating the aging of core components. The single evaporator layout leads to uneven airflow distribution, resulting in a significant temperature difference between the inlet and leeward sides. Furthermore, condensate dripping directly onto the equipment foundation causes ice to form in winter, raising the base's levelness, and the vibration from the fan is transmitted to the piping, causing fatigue fracture of weld joints. In summer, accumulated water breeds algae that clogs drain holes, and the humid environment can cause short circuits.

[0004] Therefore, it is necessary to design a housing structure for an air source heat pump and its air source heat pump to solve the above-mentioned technical problems. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, this utility model provides a housing structure for an air source heat pump and an air source heat pump thereof.

[0006] Firstly, this utility model provides a housing structure for an air source heat pump, and the technical solution adopted is as follows:

[0007] An air source heat pump housing structure includes an assembly housing, a hollow base frame, an air inlet hood, a filter element, a rain shield, a water guide plate, a drain pipe, a filter screen, hinges, a sealing door, and a handle. Convection windows are provided on both sides of the upper part of the assembly housing. Hollow base frames are symmetrically arranged on both sides of the bottom of the assembly housing. An air inlet hood is connected to the top of the assembly housing, and a filter element is installed inside the top of the air inlet hood. A rain shield is connected to the top of the assembly housing corresponding to the outer perimeter of the air inlet hood. The rain shield has a recessed structure on its upper part, and a gap is left between the bottom of the rain shield and the top of the air inlet hood for air to enter. The upper part of the rain shield is connected to a conical, closed-type water guide plate that contracts at the top and expands at the bottom. Drain pipes are installed on both sides of the assembly box. The water inlets at the upper ends of the drain pipes on both sides are connected to the lower end of the rain shield and the upper end of the water guide plate. The drain outlets of the two drain pipes are far apart from each other and close to the corresponding hollow base frame. Filter screens are installed at the convection windows on both sides of the assembly box. Hinges are symmetrically hinged on one side of the lower part of the assembly box. A sealing door is hinged between the two hinges. The end of the sealing door is embedded in the lower part of the assembly box to form a sealed closure. A protruding handle is connected to the side of the sealing door.

[0008] Preferably, the air source heat pump housing structure also includes reinforcing strips, and reinforcing strips are provided at each corner of the assembly housing exterior.

[0009] Preferably, the surface of the reinforcing strip has multiple symmetrical connecting through holes.

[0010] Secondly, this utility model provides an air source heat pump, which is installed inside the air source heat pump housing structure described in the first aspect above, and the technical solution adopted is as follows:

[0011] An air source heat pump includes a motor, fan blades, an evaporator, a first connecting pipe, a compressor, a condenser, an expansion valve, a second connecting pipe, a third connecting pipe, a fourth connecting pipe, and a fifth connecting pipe. A motor with its output shaft facing upwards is installed in the upper part of the assembly housing. Fan blades are connected to the motor's output shaft and are located directly below a filter element. Evaporators are installed on both sides of the assembly housing, corresponding to the positions of two filter screens. The lower parts of the two evaporators are connected to each other by the first connecting pipe. A compressor is symmetrically installed at the bottom of the assembly housing. A condenser is installed on one side of the bottom of the assembly housing. A third connecting pipe connects the condenser to the two evaporators. An expansion valve is connected to one side of the upper part of the condenser. A fourth connecting pipe connects the expansion valve to the first connecting pipe. A second connecting pipe connects upwards to the upper part of the compressor. A fifth connecting pipe connects the second connecting pipe to the first connecting pipe, and the upper ends of both the fifth connecting pipe and the first connecting pipe extend to the outside of the assembly housing.

[0012] Preferably, the air source heat pump also includes a snap-fit ​​rod, a protective cover, and a pull rod. Snap-fit ​​rods are symmetrically arranged on the outside of the assembly housing corresponding to the positions of the filters on both sides. A protective cover is snapped between two snap-fit ​​rods on one side. The lower part of the protective cover has a notch design, and a pull rod is connected to the outer side of the lower part of the protective cover.

[0013] Preferably, the air source heat pump also includes a sealing plate, and the sealing plate is internally connected to the end of the sealing door facing the assembly box.

[0014] Beneficial effects: 1. This utility model uses the annular gap at the bottom of the rain shield and the conical water guide plate to form an airflow channel, which ensures the air intake while achieving rain and snow separation through the centrifugal effect of the conical surface; the water guide plate and the drain pipe form a directional drainage path, completely blocking liquid from entering the core heat exchange area; the two evaporators are connected in parallel through the first connecting pipe, and together with the negative pressure air intake at the top, a bidirectional air intake field is formed, which increases the air contact area and significantly accelerates the refrigerant vaporization process; the fifth connecting pipe directly connects the compressor and the evaporator junction, shortening the low-pressure gas transportation distance; the third connecting pipe runs through the evaporator and the condenser, constructing an efficient heat transfer channel.

[0015] 2. This utility model forms a sealed maintenance port for the equipment compartment through an embedded sealing door with hinges. The handle and the through holes of the reinforcing strip enable the rapid hoisting and relocation of the assembly box, which greatly reduces the complexity of maintenance. The corner reinforcing strips form distributed stress nodes through the connecting through holes, which not only improves the wind pressure resistance of the assembly box, but also provides a standardized interface for external auxiliary components (such as flow channels and seismic supports).

[0016] 3. This utility model maintains basic ventilation through a snap-fit ​​protective cover with a lower opening. Its convex curved surface structure converts the impact force of hail into a lateral component force, achieving a balance between protection and thermal efficiency. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0018] Figure 2 This is a three-dimensional structural diagram of the components of this utility model, including the assembly box, hollow base frame, and air inlet hood.

[0019] Figure 3 This is a three-dimensional structural diagram of the components of this utility model, including the assembly box, filter screen, and protective cover.

[0020] Figure 4 This is an exploded structural diagram of the snap-fit ​​rod, protective cover, and pull rod of this utility model.

[0021] Figure 5 This is a three-dimensional structural diagram of the hinge, sealing door, and handle components of this utility model.

[0022] Figure 6 This is a three-dimensional structural diagram of the hinges, sealing doors, and sealing plates of this utility model.

[0023] Figure 7 This is a three-dimensional structural diagram of the components of this utility model, including the motor, fan blades, and evaporator.

[0024] Figure 8 This is a three-dimensional structural diagram of the third connecting pipe, fourth connecting pipe and fifth connecting pipe of this utility model.

[0025] The labels in the attached diagram are as follows: 1-Assembly housing, 101-Motor, 102-Fan blade, 103-Evaporator, 104-First connecting pipe, 105-Compressor, 107-Condenser, 108-Expansion valve, 109-Second connecting pipe, 110-Third connecting pipe, 111-Fourth connecting pipe, 112-Fifth connecting pipe, 2-Hollow base frame, 3-Air inlet hood, 4-Filter element, 5-Rain shield, 6-Water guide plate, 7-Drain pipe, 8-Reinforcing strip, 9-Filter screen, 10-Snap-fit ​​rod, 11-Protective cover, 12-Pull rod, 13-Hinge, 14-Sealing door, 15-Handle, 16-Sealing plate. Detailed Implementation

[0026] References to embodiments herein mean that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0027] Example: This example discloses a housing structure for an air source heat pump.

[0028] like Figures 1-3 and Figures 5-8As shown, the air source heat pump housing structure includes an assembly housing 1, a hollow base frame 2, an air inlet hood 3, a filter element 4, a rain shield 5, a water guide plate 6, a drain pipe 7, a filter screen 9, a hinge 13, a sealing door 14, and a handle 15. The assembly housing 1 supports the core components of the heat pump and forms a sealed working space. Convection windows are provided on both sides of the upper part of the assembly housing 1. Hollow base frames 2 are symmetrically arranged on both sides of the bottom of the assembly housing 1. The hollow base frames 2 isolate ground moisture and provide emergency drainage buffer. An air inlet hood 3 is connected to the top of the assembly housing 1. A filter element 4 is installed inside the top of the air inlet hood 3. The air inlet hood 3 and the filter element 4 perform primary air filtration and guide airflow. A rain shield 5 is connected to the top of the assembly housing 1 corresponding to the outer perimeter of the air inlet hood 3. The upper part of the rain shield 5 has a recessed structure, and a gap is left between the bottom of the rain shield 5 and the top of the air inlet hood 3 for air to enter. The upper part of the rain shield 5 is connected to the upper part of the upper part of the upper part of the air inlet hood 3. The conical, closed-type water guide plate 6 expands from the lower part. The rain shield 5 and the water guide plate 6 separate rain and snow impurities and guide water. Drain pipes 7 are installed on both sides of the assembly box 1. The drain pipes 7 discharge the separated liquid. The water inlet at the upper end of the drain pipes 7 on both sides is connected to the lower end of the rain shield 5 and the upper end of the water guide plate 6. The drain outlets of the two drain pipes 7 are far apart from each other and close to the corresponding hollow base frame 2. Filter screens 9 are installed at the convection windows on both sides of the assembly box 1. The filter screens 9 filter the air in the convection windows for a second time. Hinges 13 are symmetrically hinged on one side of the lower part of the assembly box 1. A sealing door 14 is hinged between the two hinges 13. The end of the sealing door 14 is embedded in the lower part of the assembly box 1 to form a sealed closure. The hinges 13 and the sealing door 14 form an inspection channel and waterproof seal. A protruding handle 15 is connected to the side of the sealing door 14. The handle 15 is used to assist in opening the assembly box 1.

[0029] like Figure 1 , Figure 2 and Figure 5 As shown, the air source heat pump housing structure also includes reinforcing strips 8. Reinforcing strips 8 are provided at each corner of the outer side of the assembly housing 1. Multiple symmetrical connecting through holes are opened on the surface of the reinforcing strips 8. The connecting through holes are used for the installation of auxiliary parts. The reinforcing strips 8 enhance the structural strength of the assembly housing 1.

[0030] This embodiment also discloses an air source heat pump, which is installed inside the aforementioned air source heat pump housing structure.

[0031] like Figure 7 and Figure 8As shown, the air source heat pump includes a motor 101, a fan blade 102, an evaporator 103, a first connecting pipe 104, a compressor 105, a condenser 107, an expansion valve 108, a second connecting pipe 109, a third connecting pipe 110, a fourth connecting pipe 111, and a fifth connecting pipe 112. The motor 101 with its output shaft facing upwards is bolted to the upper part of the assembly housing 1. A fan blade 102 is keyed to the output shaft of the motor 101. The fan blade 102 is located directly below the filter element 4. Two fan blades are located on opposite sides of the assembly housing 1. Evaporators 103 are installed at the locations of the filters 9. Motors 101 and fan blades 102 drive airflow to accelerate through the evaporators 103. The evaporators 103 absorb sensible heat from the air to vaporize the refrigerant. The lower parts of the two evaporators 103 are connected by a first connecting pipe 104. Compressors 105 are symmetrically installed at the bottom of the assembly housing 1. The compressors 105 increase the refrigerant pressure and temperature. A condenser 107 is installed on one side of the bottom of the assembly housing 1. The condenser 107 is connected to the two evaporators 103. A third connecting pipe 110 is provided. An expansion valve 108 is connected to the upper side of the condenser 107. The condenser 107 and the expansion valve 108 achieve condensation heat release and throttling pressure reduction. A fourth connecting pipe 111 is connected between the expansion valve 108 and the first connecting pipe 104. A second connecting pipe 109 is connected upwards to the upper side of the compressor 105. A fifth connecting pipe 112 is connected between the second connecting pipe 109 and the first connecting pipe 104. The upper ends of both the fifth connecting pipe 112 and the first connecting pipe 104 extend into the assembly housing. Externally, the fourth connecting pipe 111 connects the expansion valve 108 and the first connecting pipe 104, and is used to deliver the low-temperature liquid refrigerant after throttling and depressurization to the evaporator 103. The second connecting pipe 109 is led out from the upper part of the compressor 105 and delivers the high-temperature and high-pressure gaseous refrigerant to the condenser 107. The fifth connecting pipe 112 connects the second connecting pipe 109 and the first connecting pipe 104 to form a refrigerant return bypass. The upper ends of the fifth connecting pipe 112 and the first connecting pipe 104 extend out of the housing to facilitate connection to the external heat exchange terminal.

[0032] like Figure 1 , Figure 3 and Figure 4As shown, the air source heat pump also includes a snap-fit ​​rod 10, a protective cover 11, and a pull rod 12. Snap-fit ​​rods 10 are symmetrically arranged on the outside of the assembly housing 1 at positions corresponding to the filter screens 9 on both sides. The protective cover 11 is snapped between two snap-fit ​​rods 10 on one side. The snap-fit ​​rods 10 provide rigid support points for quickly snapping and fixing the protective cover 11, protecting the filter screens 9 from extreme weather (such as hail and strong winds). The lower part of the protective cover 11 has a notch design. The notch design blocks large particles of impurities while retaining a basic ventilation channel to maintain normal airflow exchange. The notch edge has a slot structure that directly snaps into the snap-fit ​​rod 10, enabling tool-free quick installation and removal. The lower outward-facing side of the protective cover 11 is connected to a pull rod 12, which provides an operating handle for easy manual pulling of the protective cover 11 for installation or removal, improving maintenance convenience.

[0033] like Figure 6 As shown, the air source heat pump also includes a sealing plate 16. The sealing plate 16 is connected to the end of the sealing door 14 facing the assembly box 1. The sealing plate 16 is embedded in the end of the sealing door 14 and forms a tight closed structure with the assembly box 1, which effectively prevents rainwater or external moisture from seeping into the equipment and ensures the dryness and safety of the heat pump operating environment.

[0034] In use, the air inlet hood 3 on the top of the assembly housing 1 and the rain shield 5 constitute an air pretreatment unit. When external airflow enters through the annular gap at the bottom of the rain shield 5, rain and snow impurities are first separated by the conical water guide plate 6, and the moisture gathers along the surface of the plate and is discharged through the drain pipe 7. Dry air passes through the filter element 4 to complete particulate matter filtration, forming a clean airflow that is transported downwards. The filter screens 9 of the convection windows on both sides simultaneously block insects and lint, and the double filtration ensures the purity of the heat exchange medium. The motor 101 drives the fan blades 102 to rotate and generate negative pressure, which causes the filtered air to accelerate through the evaporators 103 on both sides. The refrigerant inside the evaporator 103 absorbs the sensible heat of the air and vaporizes. The low-temperature, low-pressure gaseous refrigerant is collected through the first connecting pipe 104 and enters the compressor 105 through the fifth connecting pipe 112 to increase its pressure and temperature. The high-pressure gas is introduced into the condenser 107 through the second connecting pipe 109 to release heat and liquefy. The released heat is transferred to the heat-using terminal through the third connecting pipe 110. Liquid refrigerant flows through expansion valve 108, where it is throttled and depressurized, before returning to evaporator 103 via fourth connecting pipe 111 to complete a closed-loop circulation. In extreme weather, operators can quickly install protective cover 11 using pull rod 12; its notch design maintains basic ventilation while blocking hail impact. The sealing plate 16 embedded in the sealing door 14 forms a sealed structure with the assembly housing 1, preventing rainwater infiltration. The hollow base frame 2 forms an air isolation layer, preventing ground water from corroding the equipment through capillary action. Condensate generated during equipment operation flows down the inner wall of the assembly housing 1 and can be connected to an external pipeline for secondary collection via the water guide plate 6 before being directed to the drain pipe 7. The drain outlet facing the hollow base frame 2 keeps wastewater away from the equipment foundation, while the internal cavity of the base frame serves as an emergency drainage buffer. The connecting through holes on the reinforcing strip 8 allow for the installation of auxiliary guide channels to cope with conditions of extremely heavy rainfall.

[0035] The above-described embodiments are merely preferred embodiments of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications, improvements, and substitutions without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the appended claims.

Claims

1. An air source heat pump for use in a cabinet structure, characterised in that, The assembly box includes an assembly box (1), a hollow base frame (2), an air inlet hood (3), a filter element (4), a rain shield (5), a water guide plate (6), a drain pipe (7), a filter screen (9), a hinge (13), a sealing door (14), and a handle (15). Convection windows are provided on both sides of the upper part of the assembly box (1). A hollow base frame (2) is symmetrically arranged on both sides of the bottom of the assembly box (1). An air inlet hood (3) is connected to the top of the assembly box (1). A filter element (4) is installed inside the top of the air inlet hood (3). A rain shield (5) is connected to the top of the assembly box (1) corresponding to the outer perimeter of the air inlet hood (3). The rain shield (5) has a recessed structure on its upper part, and a gap is left between the bottom of the rain shield (5) and the top of the air inlet hood (3) for air to enter. The upper part of the plate (5) is connected to a conical closed water guide plate (6) that contracts at the top and expands at the bottom. Drainage pipes (7) are installed on both sides of the assembly box (1). The water inlet at the upper end of the drainage pipes (7) on both sides is connected to the lower end of the rain shield (5) and the upper end of the water guide plate (6). The drain outlets of the two drainage pipes (7) are far apart from each other and close to the corresponding hollow base frame (2). Filter screens (9) are installed at the convection windows on both sides of the assembly box (1). Hinges (13) are symmetrically hinged on one side of the lower part of the assembly box (1). A sealing door (14) is hinged between the two hinges (13). The end of the sealing door (14) is embedded in the lower part of the assembly box (1) to form a sealed closure. A protruding handle (15) is connected to the side of the sealing door (14).

2. The cabinet structure for an air source heat pump according to claim 1, wherein The air source heat pump housing structure also includes reinforcing strips (8), and reinforcing strips (8) are provided on each corner of the outer side of the housing (1).

3. An air source heat pump unit housing structure according to claim 2, wherein The surface of the reinforcing strip (8) has multiple symmetrical connecting through holes.

4. An air source heat pump, which is installed inside the air source heat pump housing structure of claim 3 above, the air source heat pump including a motor (101), a fan blade (102), an evaporator (103), a first connecting pipe (104), a compressor (105), a condenser (107), an expansion valve (108), a second connecting pipe (109), a third connecting pipe (110), a fourth connecting pipe (111) and a fifth connecting pipe (112), a motor (101) with its output shaft facing upward is installed in the upper part of the housing (1), a fan blade (102) is connected to the output shaft of the motor (101), the fan blade (102) is located directly below the filter element (4), and evaporators (103) are installed on both sides of the housing (1) corresponding to the positions of the two filters (9) respectively, the two evaporators (103) The lower parts are connected by a first connecting pipe (104). A compressor (105) is symmetrically installed at the bottom of the assembly box (1). A condenser (107) is installed on one side of the bottom of the assembly box (1). A third connecting pipe (110) connects the condenser (107) to the two evaporators (103). An expansion valve (108) is connected to the upper side of the condenser (107). A fourth connecting pipe (111) connects the expansion valve (108) to the first connecting pipe (104). A second connecting pipe (109) is connected upward to the upper side of the compressor (105). A fifth connecting pipe (112) connects the second connecting pipe (109) to the first connecting pipe (104). The upper ends of the fifth connecting pipe (112) and the first connecting pipe (104) both extend to the outside of the assembly box (1).

5. An air source heat pump as claimed in claim 4, wherein, The air source heat pump also includes a snap-fit ​​rod (10), a protective cover (11) and a pull rod (12). Snap-fit ​​rods (10) are symmetrically arranged on the outside of the assembly box (1) corresponding to the positions of the filters (9) on both sides. A protective cover (11) is snapped between the two snap-fit ​​rods (10) on one side. The protective cover (11) has a notch at the bottom and a pull rod (12) is connected to the side of the lower part of the protective cover (11) facing outward.

6. An air source heat pump as claimed in claim 5, wherein, The air source heat pump also includes a sealing plate (16), and the sealing door (14) is internally connected to the sealing plate (16) at one end facing the assembly box (1).

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