Air source heat pump

Abstract

The utility model relates to the technical field of heat pumps, and discloses an air source heat pump which comprises a shell, an electric control box, a heat pump assembly and a centrifugal fan, the electric control box, the heat pump assembly and the centrifugal fan are connected to the shell, the shell is provided with an inner cavity, the heat pump assembly comprises a compressor, a water side heat exchanger and an air side heat exchanger, and the centrifugal fan is connected with the air side heat exchanger and arranged in the middle of the inner cavity. A shell of the centrifugal fan is connected with the inner wall of the shell to form a water retaining part, the water retaining part divides an inner cavity into a first cavity and a second cavity, the water side heat exchanger is located in the first cavity, and the electric control box is located in the second cavity. The inner cavity of the shell is divided into the first cavity and the second cavity through the water retaining part formed by the centrifugal fan, the water side heat exchanger is distributed in the first cavity, the electric control box is distributed in the second cavity, separation is achieved, even if the water side heat exchanger leaks, leaked water can be blocked through the water retaining part, the risk that the electric control box makes contact with the water is reduced, and the problems of electric leakage, damage and the like are prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of heat pumps, in particular to an air source heat pump. Background Art

[0002] In the related technology, the air source heat pump usually includes a compressor, a water side heat exchanger, an expansion valve and an air side heat exchanger. The water side heat exchanger is connected to the user's water pipe. The refrigerant passes through the compressor, the water side heat exchanger, the expansion valve and the air side heat exchanger in sequence, and hot water is produced through heat exchange in the water side heat exchanger. Since the air source heat pump is also equipped with an electric control box to control the operation of the whole machine, once the water side heat exchanger and the water pipe leak, the leaked water will easily splash onto the electric control box, causing serious problems such as leakage and damage. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes an air source heat pump, which uses a fan to form a water retaining part to block leaking water and reduce the risk of the electric control box contacting water.

[0004] According to the air source heat pump of the first aspect of the utility model, the air source heat pump comprises a shell and an electrical control box connected to the shell, a heat pump assembly and a centrifugal fan, the shell having an inner cavity, the heat pump assembly comprising a compressor, a water-side heat exchanger and an air-side heat exchanger, the centrifugal fan being connected to the air-side heat exchanger, the outer shell of the centrifugal fan being connected to the inner wall of the shell to form a water retaining portion, the water retaining portion dividing the inner cavity into a first cavity and a second cavity, the water-side heat exchanger being located in the first cavity, and the electrical control box being located in the second cavity.

[0005] The heat exchanger according to the first embodiment of the utility model has at least the following beneficial effects:

[0006] The water retaining part formed by the centrifugal fan is used to separate the inner cavity of the shell into a first cavity and a second cavity. The water-side heat exchanger is distributed in the first cavity, and the electric control box is distributed in the second cavity to achieve separation. Even if the water-side heat exchanger leaks, the leaked water can be blocked by the water retaining part, reducing the risk of the electric control box contacting water, thereby preventing problems such as leakage and damage.

[0007] According to some embodiments of the present invention, the outer shell includes a volute and a side plate, the side plate is connected to the outer wall of the volute, and at least part of the side plate is connected to the inner wall of the shell, and the side of the volute facing the first cavity is a closed surface.

[0008] According to some embodiments of the utility model, the volute is provided with an inlet and an outlet, the inlet faces the second cavity, the edge of the side plate is provided with a surrounding plate, the surrounding plate surrounds the inlet to form an air guide hood, and at least part of the air side heat exchanger is arranged in the air guide hood.

[0009] According to some embodiments of the utility model, the enclosure is provided with a card slot, and the air-side heat exchanger is provided with a card plate that matches the card slot.

[0010] According to some embodiments of the present utility model, the shell includes a top plate, and the top plate is provided with an air inlet and an air outlet, the air inlet is connected to the second cavity, and the air outlet is connected to the outlet.

[0011] According to some embodiments of the present invention, the compressor and the air-side heat exchanger are located in the second chamber, and the compressor is located directly below the air inlet.

[0012] According to some embodiments of the present utility model, the shell includes a bottom plate, the bottom plate is provided with a groove, the groove is located below the centrifugal fan and the air-side heat exchanger, and the bottom wall of the groove is provided with a drain port.

[0013] According to some embodiments of the present invention, the water-side heat exchanger is arranged on a side of the first chamber away from the second chamber, and the electric control box is arranged on a side of the second chamber away from the first chamber.

[0014] According to some embodiments of the utility model, a notch is provided at the lower end of the water retaining portion, and a pipeline connecting the compressor and the water-side heat exchanger passes through the notch.

[0015] According to some embodiments of the utility model, the water-side heat exchanger is connected to a water inlet pipe and a water outlet pipe, a water pump is provided on the water inlet pipe, and the water inlet pipe and the water outlet pipe are located in the first chamber.

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

[0017] Additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 It is an exploded schematic diagram of an air source heat pump of some embodiments of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of an air source heat pump in some embodiments of the utility model without the left side panel, the front panel and the right side panel;

[0020] Figure 3 for Figure 2 The front view of the air source heat pump;

[0021] Figure 4This is a schematic diagram of the structure of a centrifugal fan without an impeller in some embodiments of the utility model;

[0022] Figure 5 It is a schematic diagram of the structure of the bottom plate in some embodiments of the utility model.

[0023] The figures are as follows:

[0024] Shell 100, first cavity 101, second cavity 102, water retaining portion 103, notch 104, front panel 110, back panel 120, left panel 130, right panel 140, top panel 150, air inlet 151, air outlet 152, bottom panel 160, first boss 161, support foot 162, groove 163, drain port 164, second boss 165, connecting column 170;

[0025] Electric control box 200;

[0026] Compressor 310, water-side heat exchanger 320, water inlet pipe 321, water outlet pipe 322, water pump 323, electric control valve 324, air-side heat exchanger 330, card board 331;

[0027] Centrifugal fan 400 , volute 410 , inlet 411 , outlet 412 , ring plate 413 , motor bracket 414 , side plate 420 , enclosure plate 430 , slot 431 , motor 440 . DETAILED DESCRIPTION

[0028] The embodiments of the present invention 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 invention, and cannot be understood as limiting the present invention.

[0029] In the description of the present invention, it should be understood that descriptions involving orientation, 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, and 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, and therefore cannot be understood as a limitation on the present invention.

[0030] In the description of the utility model, if there is a description of first and second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0031] In the description of the present invention, 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 the present invention based on the specific content of the technical solution.

[0032] Air source heat pump is also called heat pump water heater. Its working principle is very similar to that of air conditioner. The compressor is driven by electric energy. The gaseous refrigerant is compressed by the compressor into high-temperature and high-pressure gas, and then enters the water-side heat exchanger to release heat and heat the water. The water can be heated to 50℃ to 65℃. Then the high-pressure refrigerant passes through the expansion valve and evaporates into gas in the air-side heat exchanger, absorbing heat energy from the air. Air source heat pump operates according to the "reverse Carnot" principle. Specifically, the "outdoor unit" acts as a heat exchanger to absorb heat from the outdoor air, heat the low-boiling refrigerant and evaporate it. The gaseous refrigerant is compressed and heated by the compressor and enters the water-side heat exchanger. The heat is released through the water-side heat exchanger to produce hot water, and then throttled and reduced in pressure to return to the outdoor unit to enter the next cycle.

[0033] The water-side heat exchanger of the air source heat pump is connected to the user's water pipe. Since there is also an electrical control box inside the air source heat pump to control the operation of the entire machine, once the water-side heat exchanger and water pipe leak, the leaked water will easily splash onto the electrical control box, causing serious problems such as leakage and short circuit in the electrical control box, and even causing damage to the air source heat pump.

[0034] To this end, the embodiment of the first aspect of the utility model proposes an air source heat pump, which designs the air side heat exchanger and the centrifugal fan as a water barrier. When the water side heat exchanger and the water pipe leak, it can effectively block the splashing water and prevent the electrical control box from contacting water, thereby improving the safety of use.

[0035] like Figures 1 to 4As shown, the air source heat pump proposed in the embodiment of the first aspect of the utility model includes a housing 100 and a heat pump assembly. The housing 100 is a basic component of the air source heat pump, which not only defines the appearance of the air source heat pump, but also provides protection for other components of the air source heat pump. Other components such as the electric control box 200, the heat pump assembly and the centrifugal fan 400 are all connected to the housing 100. An inner cavity is provided inside the housing 100 to accommodate other components. It should be understood that the housing 100 is usually assembled with sheet metal parts. The housing 100 includes a front panel 110, a back panel 120, a left side panel 130, a right side panel 140, a top panel 150 and a bottom panel 160, which are then connected by a structure such as a buckle or bolt fastening to form an inner cavity inside the housing 100. Among them, a connecting column 170 can be set at the connection between the front panel 110 and the left side panel 130 and the right side panel 140. The connecting column 170 is also a sheet metal part and has a bending structure, which can not only improve the structural strength, but also improve the connection strength between the front panel 110 and the left side panel 130 and the right side panel 140. In addition, the connecting column 170 is provided with a curved surface. After assembly, the curved surface serves as a part of the outer surface of the air source heat pump, so that the connection between the front panel 110 and the left side panel 130 and the right side panel 140 has a smooth transition and a more beautiful appearance.

[0036] The heat pump assembly includes a compressor 310, a water-side heat exchanger 320, an expansion valve and an air-side heat exchanger 330, and they are connected by pipelines. When the air source heat pump is running, the compressor 310 compresses the refrigerant into a high-temperature and high-pressure gas, and inputs it into the water-side heat exchanger 320. By utilizing the heat exchange function of the water-side heat exchanger 320, hot water is produced for users to use. Then, by utilizing the throttling and pressure reduction function of the expansion valve, the refrigerant is formed into a low-temperature liquid, and input into the air-side heat exchanger 330. By utilizing the heat exchange function of the air-side heat exchanger 330, the low-temperature refrigerant absorbs heat in the air-side heat exchanger 330 to obtain a gaseous refrigerant, which returns to the compressor 310 and enters the next cycle.

[0037] It can be understood that the water side heat exchanger 320 is connected to the user's water pipeline, and can be an instant heating structure to output hot water immediately for use, or the water side heat exchanger 320 can be connected to a water tank to store hot water in the water tank for user use, which is not specifically limited in this embodiment.

[0038] It is understandable that in the air side heat exchanger 330, the refrigerant exchanges heat with the air. Usually, the air side heat exchanger 330 is a fin heat exchanger, which uses fins to increase the contact area to speed up the heat exchange. In order to further improve the heat exchange speed and efficiency, the air side heat exchanger 330 is connected to the centrifugal fan 400, and the centrifugal fan 400 drives the air flow to speed up the heat exchange.

[0039] By improving the structure of the air source heat pump, the centrifugal fan 400 is arranged in the middle of the inner cavity of the shell 100, and the outer shell of the centrifugal fan 400 is connected to the inner wall of the shell 100 to form a water retaining portion 103. The water retaining portion 103 divides the inner cavity of the shell 100 into a first cavity 101 and a second cavity 102, and the water side heat exchanger 320 is located in the first cavity 101, and the electric control box 200 is located in the second cavity 102. Using the water retaining portion 103 as a water retaining structure, during the operation of the air source heat pump, even if the water side heat exchanger 320 leaks, the water retaining portion 103 can block the leaked water, reduce the risk of the electric control box 200 contacting water, prevent problems such as leakage and damage, and improve the stability of the air source heat pump.

[0040] Reference Figure 2 In some embodiments of the present invention, the housing of the centrifugal fan 400 includes a volute 410 and a side plate 420, wherein an air duct is formed inside the volute 410 to guide the airflow, the side plate 420 is connected to the outer wall of the volute 410, and at least part of the side plate 420 is connected to the inner wall of the housing 100, thereby forming a water retaining portion 103. In order to block the leaked water, the side of the volute 410 facing the first chamber 101 is a closed surface. During the operation of the air source heat pump, when the water side heat exchanger 320 leaks, the ejected water will be blocked by the water retaining portion 103 composed of the volute 410 and the side plate 420, thereby preventing the leaked water from entering the second chamber 102, reducing the risk of the electric control box 200 contacting water, preventing problems such as leakage and damage, and improving the stability of the air source heat pump.

[0041] It is understandable that the side plate 420 can be arranged on the side of the volute 410 close to the first cavity 101, and the side plate 420 and the side of the volute 410 form a flat water retaining portion 103. Since the water retaining portion 103 is close to the first cavity 101, the leaked water can be quickly blocked. In addition, the side plate 420 can also be arranged on the side of the volute 410 close to the second cavity 102, or the side plate 420 can be arranged in the middle of the volute 410. Figure 3 As shown, considering that the volute 410 is usually assembled from two half shells, the two half shells are connected and positioned by snaps and then fixed by screws, and the side plate 420 is arranged on one of the half shells. It can be designed according to the specific structure of the two half shells, and both can meet the requirements of forming the water retaining part 103. Usually, the side plate 420 is arranged on the half shell with a simpler structure, which is conducive to demolding after injection molding.

[0042] It is understandable that if Figure 4As shown, considering that the side of the volute 410 facing the first chamber 101 is a closed surface, and the water-side heat exchanger 320 is distributed in the first chamber 101, the water-side heat exchanger 320 will spray water outward when leaking, which is not suitable for arranging the motor 440 of the centrifugal fan 400 in the first chamber 101, so a motor bracket 414 is provided inside the volute 410, the motor 440 is installed on the motor bracket 414, and the impeller is connected to the rotating shaft of the motor 440 to avoid the motor 440 from contacting water when the water-side heat exchanger 320 leaks, thereby improving the stability and safety of use. In addition, in order to improve the structural strength, the side of the volute 410 facing the first chamber 101 is provided with a plurality of reinforcing ribs, and the plurality of reinforcing ribs are arranged in a criss-cross pattern to form a grid-shaped reinforcing structure, thereby improving the structural strength and rigidity of the volute 410 to support the motor 440 and the impeller.

[0043] Reference Figure 4 In some embodiments of the utility model, the volute 410 is provided with an inlet 411 and an outlet 412, wherein the inlet 411 faces the second cavity 102, and the air-side heat exchanger 330 is also arranged in the second cavity 102, and a surrounding plate 430 is provided at the edge of the side plate 420, and the surrounding plate 430 surrounds the inlet 411, and the side plate 420 and the surrounding plate 430 form an air guide cover. After assembly, at least part of the air-side heat exchanger 330 is arranged in the air guide cover. When the centrifugal fan 400 is running, air is sucked from the inlet 411. By utilizing the air guiding function of the air guide cover, the air sucked by the centrifugal fan 400 will flow through the air-side heat exchanger 330, which helps to improve the heat exchange efficiency of the air-side heat exchanger 330 and improve energy efficiency. It can be understood that the opening of the air guide cover matches the shape and size of the air side heat exchanger 330. The opening of the air guide cover can be the same size as the air side heat exchanger 330, or the opening of the air guide cover can be slightly smaller than the size of the air side heat exchanger 330. Both can cause the airflow sucked in by the centrifugal fan 400 to pass through the air side heat exchanger 330.

[0044] Reference Figure 1 and Figure 4 A slot 431 is provided at the end of the enclosure 430 facing the second chamber 102, and a card plate 331 is provided on the air side heat exchanger 330 to match the slot 431. The card plate 331 can accurately position the air side heat exchanger 330 by matching the slot 431 and can prevent the air side heat exchanger 330 from being installed incorrectly. The card plate 331 can be an independent component installed on the air side heat exchanger 330, or it can be an extension of the outer wall structure of the air side heat exchanger 330. Figure 4As shown, the housing of the centrifugal fan 400 includes four panels 430, and the four panels 430 form a rectangular frame, and a total of four slots 431 are provided, which are distributed on the panels 430 at the upper and lower ends of the centrifugal fan 400, and one of the side walls of the slot 431 is the panels 430 on the left and right sides. When the panel 331 is inserted into the slot 431, the panels 430 on the left and right sides just abut against the outer wall of the air side heat exchanger 330, forming a more stable support structure, and the panels 430 at the upper and lower ends also abut against the outer wall of the air side heat exchanger 330, and the air guide hood surrounds a part of the air side heat exchanger 330, which is conducive to reducing air leakage and improving heat exchange efficiency. In addition, the panel 331 can also be provided with a folded edge, and after assembly, the folded edge abuts against the panels 430 at the upper and lower ends, further improving the structural strength.

[0045] It is understandable that the air guide cover is assembled with the air side heat exchanger 330. In addition to the cooperation between the card slot 431 and the card plate 331, other fixing structures such as screw fixing and rivet fixing can also be added to fix the centrifugal fan 400 and the air side heat exchanger 330 as a whole.

[0046] It is understandable that the air-side heat exchanger 330 can also be integrally installed in the interior of the air guide hood. If the air-side heat exchanger 330 is wrapped by the air guide hood, the air sucked in from the opening of the air guide hood will inevitably flow through the air-side heat exchanger 330. The outer wall of the air-side heat exchanger 330 can be set to fit the air guide hood, which is beneficial to improving the heat exchange efficiency.

[0047] Reference Figure 1 , an air inlet 151 and an air outlet 152 are provided on the top plate 150, wherein the air inlet 151 is connected to the second chamber 102, and the air outlet 152 is connected to the outlet 412 of the volute 410. When the centrifugal fan is running, the outside air enters the second chamber 102 through the air inlet 151, then enters the volute 410 through the inlet 411 of the volute 410, and then is discharged from the air source heat pump through the outlet 412 of the volute 410 and the air outlet 152. The refrigerant in the air-side heat exchanger 330 can absorb the heat of the air outside the air source heat pump, and has a large heat source. The top plate 150 is also provided with pipe joints surrounding the air inlet 151 and the air outlet 152, which are convenient for connecting air ducts or bellows. The air source heat pump can be placed indoors and connected to the outdoors using air ducts or bellows. Figure 4 As shown, the volute 410 is provided with a ring plate 413, which surrounds the outlet 412. After being matched, the ring plate 413 is connected to the top plate 150 or the pipe joint, and sealing can be achieved by a sealing strip or the like.

[0048] Reference Figure 1 and Figure 3In some embodiments, the compressor 310 is arranged in the second chamber 102, and the compressor 310 is located directly below the air inlet 151. When the centrifugal fan 400 is running, the outside air enters the second chamber 102 through the air inlet 151, and the airflow can take away the heat of the compressor 310, helping the compressor 310 to cool down and prevent the compressor 310 from shutting down due to over-temperature. In addition, the compressor 310 is located between the electric control box 200 and the air side heat exchanger 330, which can prevent the low temperature of the air side heat exchanger 330 from affecting the electric control box 200, and the compressor 310 is close to the air side heat exchanger 330, which is conducive to the refrigerant in the air side heat exchanger 330 to absorb heat and improve the heat absorption efficiency.

[0049] Reference Figure 1 The compressor 310 is mounted on the bottom plate 160. The bottom plate 160 is provided with a first boss 161. The first boss 161 is provided with three circumferentially distributed legs 162. The compressor 310 is connected to the three legs 162. The legs 162 may be vibration-damping legs including vibration-damping parts such as rubber pads, or may be fixed legs. Since the bottom plate 160 is a sheet metal part, the first boss 161 can be formed by stamping, and the first boss 161 also serves as a reinforcing rib, thereby improving the structural stability of the bottom plate 160 and facilitating the support of the compressor 310.

[0050] Reference Figure 1 and Figure 2 In some embodiments of the utility model, the water side heat exchanger 320 is connected to a water inlet pipe 321 and a water outlet pipe 322, and a water pump 323 is arranged on the water inlet pipe 321. The water inlet pipe 321 and the water outlet pipe 322 are both distributed in the first cavity 101 and pass through the bottom plate 160 to connect to the user's water pipeline.

[0051] Reference Figure 2 and Figure 5 The bottom plate 160 is provided with a second boss 165, and a through hole is provided on the second boss 165 for the water inlet pipe 321 and the water outlet pipe 322 to pass through. The water inlet pipe 321 and the water outlet pipe 322 are connected with a fixing member 334, and the fixing member 334 abuts against the second boss 165. The fixing member 334 is provided with a mounting hole for bolt fixing. Since the bottom plate 160 is a sheet metal part, the second boss 165 can be formed by stamping, and the second boss 165 also acts as a reinforcing rib, which improves the structural stability of the bottom plate 160, reduces the risk of deformation, and is conducive to defining the water inlet pipe 321 and the water outlet pipe 322. Figure 1 As shown, it can be understood that the water outlet pipe 322 is connected to an electric control valve 324, and the electric control valve 324 has two outputs. Through the electric control valve 324, one output or both outputs can be selected to meet a variety of usage scenarios.

[0052] Reference Figures 1 to 3In some embodiments of the present invention, the bottom plate 160 of the housing 100 is provided with a groove 163, and the groove 163 is arranged below the centrifugal fan 400 and the air side heat exchanger 330, such as Figure 5 As shown, a drain port 164 is provided on the bottom wall of the groove 163. By providing the groove 163, when the water-side heat exchanger 320 leaks, the water jetting is first blocked by the water retaining portion 103, and the water flows down along the water retaining portion 103 into the groove 163 for collection, and then is discharged from the air source heat pump through the drain port 164, thereby preventing the water from contacting the electric control box 200, preventing problems such as leakage and damage, and improving the stability of the air source heat pump. In addition, the groove 163 can also receive the condensed water of the air-side heat exchanger 330. Since the air is cooled after the air-side heat exchanger 330 exchanges heat, the water vapor in the air will condense. The condensed water is received by the groove 163, and then is discharged from the air source heat pump through the drain port 164.

[0053] It is understandable that, since the bottom plate 160 is a sheet metal part, the groove 163 can be formed by stamping, and the bottom surface of the bottom plate 160 is a convex structure, which also serves as a reinforcing rib to improve the structural stability of the bottom plate 160. The side wall of the groove 163 is set as an inclined slope, which is conducive to collecting leaked water on the one hand, and is conducive to stamping and simplifying processing on the other hand. Usually, a folded edge is set at the edge of the bottom plate 160, and the folded edge is used to increase the structural strength, and the folded edge is fixed to the front panel 110, the back panel 120, the left side panel 130, and the right side panel 140 by screws, which is stable and reliable.

[0054] Reference Figures 1 to 3 In order to prevent the leaked water from contacting the electric control box 200, the distance between the water side heat exchanger 320 and the electric control box 200 is as large as possible, so the water side heat exchanger 320 is arranged on the side of the first chamber 101 away from the second chamber 102, and the electric control box 200 is arranged on the side of the second chamber 102 away from the first chamber 101, that is, the water side heat exchanger 320 and the electric control box 200 are distributed at both ends of the housing 100, with a large distance, thereby improving safety. It can be understood that the compressor 310 and the electric control box 200 are heat-generating components, while the air side heat exchanger 330 is a heat-absorbing component. In terms of layout, the compressor 310 and the electric control box 200 have a certain distance, and a cavity is formed between the air side heat exchanger 330 and the electric control box 200. When the centrifugal fan 400 is running, the airflow can take away the heat of the electric control box 200, helping the electric control box 200 to cool down, and at the same time helping the refrigerant in the air side heat exchanger 330 to absorb heat.

[0055] Reference Figure 2 and Figure 4It can be understood that there is a pipeline between the compressor 310 and the water-side heat exchanger 320 to transport the refrigerant, and a notch 104 is provided at the lower end of the water retaining portion 103. The pipeline connecting the compressor 310 to the water-side heat exchanger 320 passes through the notch 104. Since the volute 410 of the centrifugal fan 400 is usually a plastic part, the axial cross-section of the volute 410 is approximately circular, and the notch 104 is set at a position close to the front panel 110. There is a certain distance between the volute 410 and the notch 104, so that a gap is formed between the pipeline and the volute 410, so as to prevent the high-temperature pipeline from contacting the volute 410, which helps to protect the volute 410.

[0056] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. Air source heat pump, characterized in that: include: a housing having an inner cavity; An electric control box connected to the housing; A heat pump assembly connected to the housing, the heat pump assembly comprising a compressor, a water-side heat exchanger and an air-side heat exchanger; A centrifugal fan is connected to the air side heat exchanger, the outer shell of the centrifugal fan is connected to the inner wall of the shell to form a water retaining portion, the water retaining portion divides the inner cavity into a first cavity and a second cavity, the water side heat exchanger is located in the first cavity, and the electrical control box is located in the second cavity.

2. The air source heat pump according to claim 1, characterized in that: The outer shell includes a volute and a side plate, wherein the side plate is connected to the outer wall of the volute, and at least a portion of the side plate is connected to the inner wall of the shell, and the side of the volute facing the first cavity is a closed surface.

3. The air source heat pump according to claim 2, characterized in that: The volute is provided with an inlet and an outlet, the inlet faces the second cavity, the edge of the side plate is provided with a surrounding plate, the surrounding plate surrounds the inlet to form an air guide cover, and at least part of the air side heat exchanger is arranged in the air guide cover.

4. The air source heat pump according to claim 3, characterized in that: The enclosure is provided with a card slot, and the air-side heat exchanger is provided with a card plate that matches the card slot.

5. The air source heat pump according to claim 3, characterized in that: The shell includes a top plate, and the top plate is provided with an air inlet and an air outlet, the air inlet is connected to the second cavity, and the air outlet is connected to the outlet.

6. The air source heat pump according to claim 5, characterized in that: The compressor and the air-side heat exchanger are located in the second chamber, and the compressor is located directly below the air inlet.

7. The air source heat pump according to claim 1, characterized in that: The shell comprises a bottom plate, the bottom plate is provided with a groove, the groove is located below the centrifugal fan and the air-side heat exchanger, and the bottom wall of the groove is provided with a drain port.

8. The air source heat pump according to claim 1, characterized in that: The water-side heat exchanger is arranged on a side of the first chamber away from the second chamber, and the electric control box is arranged on a side of the second chamber away from the first chamber.

9. The air source heat pump according to claim 1, characterized in that: A notch is provided at the lower end of the water retaining portion, and a pipeline connecting the compressor and the water-side heat exchanger passes through the notch.

10. The air source heat pump according to claim 1, characterized in that: The water-side heat exchanger is connected to a water inlet pipe and a water outlet pipe, a water pump is arranged on the water inlet pipe, and the water inlet pipe and the water outlet pipe are located in the first chamber.

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