A defrosting device for an air source heat pump

Abstract

This utility model discloses a defrosting device for an air source heat pump, including a housing and an evaporator fixedly installed on the inner wall of the top of the housing. The defrosting device body is installed inside the housing. The bottom of the housing is open, and an inspection hole is provided on the front side of the housing. A baffle adapted to the inspection hole is fixedly installed on the front side of the housing by four screws. The defrosting device body includes a base plate, which is movably fitted inside the bottom of the housing. This utility model, through a series of structures, can surround the evaporator with hot air for defrosting after connecting an external hot air blower. It allows for easy unlocking and downward movement of the base plate by simple pulling, driving multiple annular tubes to move downward and unblock the evaporator. This avoids the phenomenon where multiple annular tubes surround and obstruct the evaporator, making subsequent maintenance difficult, thus facilitating subsequent maintenance and improving the convenience of maintenance.

Description

Technical Field

[0001] This utility model relates to the field of air source heat pump technology, specifically a defrosting device for air source heat pumps. Background Technology

[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 high-grade heat source. It can convert low-grade heat energy (such as the heat contained in air, soil, and water) that cannot be directly used into usable high-grade heat energy, thereby saving some high-grade energy (such as coal, gas, oil, and electricity). When the air source heat pump is running in winter, due to the low outdoor temperature and high humidity, the surface of the evaporator is prone to frost formation, which will affect the normal operation of the air source heat pump and may even cause the compressor to malfunction in severe cases.

[0003] In response, a search revealed that publication number CN217560152U discloses a defrosting device for an air source heat pump, comprising an outer casing and an evaporator disposed within the outer casing. Several annular pipes are fitted around the outer side of the evaporator from bottom to top; adjacent annular pipes are connected by a connecting pipe; several air outlets are formed on the inner sidewall of the annular pipes; a buffer box is also disposed within the outer casing, fixed to the inner sidewall of the outer casing; several air ducts are connected to the side of the buffer box away from the inner sidewall of the outer casing, and the end of each air duct away from the buffer box is connected to the connecting pipe; an air inlet pipe is connected to the buffer box, and the end of the air inlet pipe away from the buffer box extends through the sidewall of the outer casing to the outside of the outer casing; a water outlet pipe is disposed at the bottom of the outer casing; this device can melt the frost on the outer surface of the evaporator by heat, cleaning the frost on the evaporator surface and ensuring the normal operation of the air source heat pump.

[0004] The defrosting device for air source heat pumps disclosed above uses multiple annular pipes fitted around the outside of the evaporator. An air inlet pipe connects to an external hot air blower during defrosting, and multiple air outlets inside the annular pipes allow for defrosting by surrounding the evaporator with hot air. However, in practical use, the following shortcomings still exist:

[0005] To facilitate evaporator maintenance, the outer casing is typically equipped with access ports for evaporator inspection and maintenance. However, multiple annular pipes surrounding the outside of the evaporator can easily obstruct the view, making subsequent maintenance difficult and lacking a convenient unobstructing mechanism. This causes significant inconvenience to subsequent evaporator maintenance. Therefore, this application proposes a defrosting device for air source heat pumps to solve the aforementioned problems. Utility Model Content

[0006] The purpose of this invention is to provide a defrosting device for an air source heat pump to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a defrosting device for an air source heat pump, comprising an outer shell and an evaporator fixedly installed on the inner wall of the top of the outer shell, wherein a defrosting device body is installed inside the outer shell, the bottom of the outer shell is provided as an opening, an inspection hole is provided on the front side of the outer shell, and a baffle adapted to the inspection hole is fixedly installed on the front side of the outer shell by four screws.

[0008] The defrosting device body includes:

[0009] The base plate is movably fitted inside the bottom of the outer shell;

[0010] An annular pipe 1 is fixedly installed on the top of the base plate. An L-shaped air inlet pipe for connecting to an external hot air blower and supplying hot air is fixedly connected to its bottom right side. The base plate is sleeved on the L-shaped air inlet pipe. The L-shaped air inlet pipe is used to connect to the external hot air blower and supply hot air into the annular pipe 1.

[0011] The surrounding defrost and drainage assembly is connected and fixed to the top of the annular pipe and movably sleeved on the outside of the evaporator. The surrounding defrost and drainage assembly is used to surround the evaporator with hot air to defrost when hot air is supplied into the annular pipe, and to drain the water generated by the defrost blowing to cool it down.

[0012] Rectangular retaining rings, which are in two sets and are respectively fixedly connected to the bottom sides of the outer casing;

[0013] The horizontal locking support assembly consists of two sets, which are fixedly connected to the bottom sides of the base plate and are movably locked into the corresponding rectangular locking rings. The horizontal locking support assembly is used to lock and support the base plate in conjunction with the rectangular locking rings and is used to unlock the plate by simply pulling it.

[0014] The vertical guide support assembly is fixedly connected between the top of the base plate and the inner wall of the outer shell. The vertical guide support assembly is used to guide and support the base plate when it is lowered after unlocking. The lowering of the base plate enables the surrounding blow-out defrost and drainage assembly to be lowered through the annular pipe, thereby removing the obstruction from the evaporator so that personnel can perform subsequent inspection and maintenance of the evaporator.

[0015] Preferably, the surrounding defrosting and drainage assembly includes two vertical pipes with sealed top ends. The two vertical pipes are respectively connected and fixed to the top two sides of the annular pipe one. The two vertical pipes are connected and fixed with connecting pipes at equal intervals on the adjacent sides. The same annular pipe two is connected and fixed between the two connecting pipes on the left and right sides. Multiple annular pipe twos are all sleeved on the outside of the evaporator. Multiple air blowing heads are connected and fixed in an annular shape at equal intervals on the inside of the annular pipe two. The evaporator is located between the multiple air blowing heads. A conical guide shroud is fixedly connected to the bottom of the lowest annular pipe two. The bottom end of the conical guide shroud extends to the bottom of the base plate.

[0016] Preferably, the horizontal support assembly includes a rectangular sleeve, two rectangular sleeves are fixedly connected to the bottom sides of the base plate, the adjacent sides of the two rectangular sleeves are both set as a sealing structure, a rectangular locking rod is slidably fitted inside the rectangular sleeve, the opposing ends of the two rectangular locking rods are respectively movably locked into the corresponding rectangular locking ring and set as an arc structure, a spring is fixedly connected between the rectangular locking rod and the inner wall of the corresponding rectangular sleeve away from its opening, a rectangular through hole is opened at the bottom of the rectangular sleeve, a pull ring is fixedly connected to the bottom of the rectangular locking rod, the bottom of the pull ring movably passes through the corresponding rectangular through hole and extends to the bottom of the rectangular sleeve.

[0017] Preferably, the vertical guide support assembly includes four vertical guide rods fixedly connected to the top of the base plate in a rectangular shape. Two vertical guide sleeves are fixedly connected to the inner walls of both sides of the outer shell. The vertical guide sleeves are movably sleeved on the outside of the corresponding vertical guide rods. An anti-detachment block is connected to the top of the vertical guide rod, and the anti-detachment block is located above the corresponding vertical guide sleeve.

[0018] Preferably, an anti-detachment block is welded to the top of the vertical guide rod.

[0019] Preferably, an anti-detachment block is detachably connected to the top end of the vertical guide rod.

[0020] Preferably, the bottom of the anti-detachment block is fixedly connected with an internal threaded sleeve, and the top of the outer side of the vertical guide rod is provided with an external thread. The internal threaded sleeve is spirally screwed onto the corresponding external thread, and the bottom of the anti-detachment block is bonded and fixed with a rubber block that is squeezed and in close contact with the top of the corresponding vertical guide rod.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] 1. By combining the base plate, ring pipe, L-shaped air inlet pipe and surrounding defrosting and drainage components, hot air can be blown around the evaporator after connecting to an external hot air blower, so that the frost on the outside of the evaporator melts and forms water droplets that flow out.

[0023] 2. Through the combination of the base plate, horizontal support assembly, vertical guide support assembly and rectangular retaining ring, the base plate can be easily unlocked and moved down by simple pulling, and multiple annular tubes can be moved down to remove the obstruction of the evaporator. This avoids the phenomenon that the multiple annular tubes will surround and obstruct the evaporator, making it difficult to inspect and maintain it later. This makes it easier for personnel to inspect and maintain the evaporator later and improves the convenience of subsequent maintenance.

[0024] 3. By using an alternative design for the internal thread sleeve, external thread, and rubber block, the anti-detachment block can be disassembled separately to release the support, facilitating the direct removal of the base plate and its top structure, thus further improving the flexibility of use.

[0025] This utility model, through a series of structures, can surround the evaporator with hot air for defrosting after connecting to an external hot air blower. It also allows for easy unlocking and downward movement of the base plate by simply pulling it down, which drives multiple annular tubes to move down and unblock the evaporator. This avoids the phenomenon where multiple annular tubes surround and block the evaporator, making subsequent inspection and maintenance difficult. This facilitates subsequent inspection and maintenance of the evaporator and improves the convenience of subsequent maintenance. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of a defrosting device for an air source heat pump according to Embodiment 1 of this utility model;

[0027] Figure 2 This is a cross-sectional structural schematic diagram of a defrosting device for an air source heat pump according to Embodiment 1 of this utility model;

[0028] Figure 3 for Figure 2 A magnified structural diagram of part A in the diagram;

[0029] Figure 4 This is a cross-sectional structural schematic diagram of a defrosting device for an air source heat pump according to Embodiment 2 of this utility model.

[0030] In the diagram: 1. Outer shell; 101. Evaporator; 102. Baffle; 3. Base plate; 301. Annular tube one; 302. Vertical tube; 303. Annular tube two; 304. Air blowing head; 305. Conical guide shroud; 306. L-shaped air inlet pipe; 4. Vertical guide sleeve; 401. Vertical guide rod; 402. Anti-detachment block; 403. Internal threaded sleeve; 5. Rectangular retaining ring; 501. Rectangular sleeve; 502. Rectangular retaining rod; 503. Spring; 504. Pull ring. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Example 1

[0033] like Figures 1 to 3 As shown, the defrosting device for an air source heat pump proposed in this embodiment includes an outer shell 1 and an evaporator 101 fixedly installed on the inner wall of the top of the outer shell 1. The defrosting device body is installed inside the outer shell 1. The bottom of the outer shell 1 is set as an opening. An inspection hole is opened on the front side of the outer shell 1. A baffle 102 adapted to the inspection hole is fixedly installed on the front side of the outer shell 1 by four screws.

[0034] The defrosting device body includes:

[0035] The base plate 3 is movably fitted inside the bottom of the outer shell 1;

[0036] The annular pipe 301 is fixedly installed on the top of the base plate 3. An L-shaped air inlet pipe 306 for connecting with an external hot air blower to supply hot air is fixedly connected to its bottom right side. The base plate 3 is sleeved on the L-shaped air inlet pipe 306. The L-shaped air inlet pipe 306 is used to connect the external hot air blower to supply hot air into the annular pipe 301.

[0037] The surrounding defrosting and drainage assembly is connected and fixed to the top of the annular pipe 301 and movably sleeved on the outside of the evaporator 101. The surrounding defrosting and drainage assembly is used to surround the evaporator 101 with hot air to defrost when hot air is supplied into the annular pipe 301, and to drain the water generated by the heat-cooling defrosting downward.

[0038] Rectangular retaining rings 5, which are in two sets and are respectively fixedly connected to the bottom sides of the outer shell 1;

[0039] The horizontal locking support assembly consists of two sets, which are fixedly connected to the bottom sides of the base plate 3 respectively, and are movably locked into the corresponding rectangular locking rings 5. The horizontal locking support assembly is used to lock and support the base plate 3 in conjunction with the rectangular locking rings 5, and is used to unlock the base plate by simply pulling it.

[0040] The vertical guide support assembly is fixedly connected between the top of the base plate 3 and the inner wall of the outer shell 1. The vertical guide support assembly is used to guide and support the base plate 3 when it is lowered after unlocking. The lowering of the base plate 3 enables the surrounding blow-out defrost and drainage assembly to be lowered through the annular pipe 301, thereby removing the obstruction from the evaporator 101 so that personnel can perform subsequent inspection and maintenance on the evaporator 101.

[0041] It should be noted that a baffle 102 adapted to the inspection hole is fixedly installed on the front side of the outer casing 1 by four screws. Since the baffle 102 is installed and fixed by screws, it is convenient to disassemble the baffle 102 later. In addition, the baffle 102 is installed on the front side of the outer casing 1 by screws. This installation method of the baffle 102 belongs to the existing detachable installation method.

[0042] Furthermore, such as Figure 2 As shown, the surrounding defrosting and drainage assembly includes two vertical pipes 302 with sealed top ends. The two vertical pipes 302 are respectively connected and fixed to the top two sides of the annular pipe 301. The two vertical pipes 302 are connected and fixed with connecting pipes at equal intervals on the side of the two vertical pipes 302. The two connecting pipes on the left and right sides are connected and fixed with the same annular pipe 303. Multiple annular pipes 303 are sleeved on the outside of the evaporator 101. Multiple air blowing heads 304 are connected and fixed in an annular shape at equal intervals on the inside of the annular pipe 303. The evaporator 101 is located between multiple air blowing heads 304. The bottom of the lowest annular pipe 303 is fixedly connected with a conical guide shroud 305. The bottom end of the conical guide shroud 305 extends to the bottom of the base plate 3.

[0043] In this embodiment, the top of the base plate 3 is provided with a through hole that is fixedly connected to the bottom of the outer side of the conical guide shroud 305, so that the bottom end of the conical guide shroud 305 can pass through.

[0044] In this implementation scheme, through the cooperation of vertical pipe 302, connecting pipe, annular pipe 2 303, air blowing head 304 and conical guide shroud 305, when hot air is supplied into annular pipe 1 301, the hot air is split into two vertical pipes 302, and then split into multiple annular pipes 2 303 through multiple connecting pipes, and then blown out through multiple air blowing heads 304 to surround the evaporator 101 to perform defrosting. The water droplets generated during defrosting drip downward into the conical guide shroud 305 for downward discharge. A flexible hose for water drainage can be connected to the bottom end of the conical guide shroud 305 in advance for further designated drainage work.

[0045] Furthermore, such as Figure 2 and 3 As shown, the horizontal support assembly includes a rectangular sleeve 501. Two rectangular sleeves 501 are fixedly connected to the bottom sides of the base plate 3. The sides of the two rectangular sleeves 501 that are close to each other are set as a sealing structure. A rectangular clamping rod 502 is slidably sleeved inside the rectangular sleeve 501. The opposing ends of the two rectangular clamping rods 502 are respectively movably clamped into the corresponding rectangular clamping ring 5 and set as an arc structure. A spring 503 is fixedly connected between the rectangular clamping rod 502 and the inner wall of the corresponding rectangular sleeve 501 away from its opening. A rectangular through hole is opened at the bottom of the rectangular sleeve 501. A pull ring 504 is fixedly connected to the bottom of the rectangular clamping rod 502. The bottom of the pull ring 504 moves through the corresponding rectangular through hole and extends to the bottom of the rectangular sleeve 501.

[0046] In this implementation scheme, the rectangular sleeve 501, rectangular locking rod 502, spring 503, rectangular perforation, and pull ring 504 work together. By engaging the two rectangular locking rods 502 with the two rectangular locking rings 5, the two rectangular sleeves 501 are fixedly supported, thereby achieving a locking support for the base plate 3. When people pull the two pull rings 504, the two pull rings 504 cause the two rectangular locking rods 502 to separate from their corresponding rectangular locking rings 5. The rectangular locking rods 502 slide laterally within their corresponding rectangular sleeves 501 and compress the springs 503, achieving a simple pull-to-unlock effect. After unlocking, the base plate 3 can be moved down to exit from the outer shell 1, achieving both locking support for the base plate 3 and convenient and quick unlocking via a simple pull.

[0047] Furthermore, such as Figure 2 and 3 As shown, the vertical guide support assembly includes four vertical guide rods 401 that are fixedly connected to the top of the base plate 3 in a rectangular shape. Two vertical guide sleeves 4 are fixedly connected to the inner walls of both sides of the outer shell 1. The vertical guide sleeves 4 are movably sleeved on the outside of the corresponding vertical guide rods 401. The top of the vertical guide rods 401 is connected to an anti-detachment block 402, which is located above the corresponding vertical guide sleeve 4.

[0048] In this implementation scheme, the vertical guide rods 401, vertical guide sleeves 4, and anti-detachment blocks 402 work together to guide the four vertical guide rods 401 downwards within the four vertical guide sleeves 4 as the base plate 3 moves downwards. When the vertical guide rods 401 move downwards and the corresponding anti-detachment blocks 402 contact the top of the vertical guide sleeves 4, they are blocked and restricted. At this time, the four vertical guide sleeves 4 support the base plate 3 in sequence through the four anti-detachment blocks 402 and the four vertical guide rods 401. The downward movement of the base plate 3 drives multiple annular pipes 303 to move downwards in sequence through the first annular pipe 301 and the two vertical pipes 302, thereby removing the obstruction of the evaporator 101. This facilitates subsequent maintenance and repair of the evaporator 101, avoiding the phenomenon that the multiple annular pipes 303 surround and obstruct the evaporator 101, which would make subsequent maintenance difficult, thus improving the convenience of subsequent maintenance.

[0049] Furthermore, an anti-detachment block 402 is welded to the top of the vertical guide rod 401.

[0050] It should be noted that the vertical guide rod 401, vertical guide sleeve 4, anti-detachment block 402, rectangular sleeve 501 and rectangular clamp rod 502 are all made of stainless steel. The advantages of stainless steel, such as high hardness, high wear resistance and good maintenance-free effect, are utilized to ensure long-term connection and support stability.

[0051] In this embodiment, after connecting an external hot air blower, hot air can be blown around the evaporator 101 to defrost it. This allows the base plate 3 to be easily unlocked and moved down by a simple pulling motion, which in turn drives multiple annular tubes 303 to move down and unblock the evaporator 101. This avoids the phenomenon that the multiple annular tubes 303 may surround and block the evaporator 101, making it difficult to perform subsequent maintenance. This makes it easier for personnel to perform subsequent maintenance on the evaporator 101 and improves the convenience of subsequent maintenance.

[0052] The method of use in this embodiment is as follows: When the defrosting device for the air source heat pump is used, during defrosting, the L-shaped air inlet pipe 306 is connected to an external hot air blower, so that hot air is supplied into the first annular pipe 301 through the L-shaped air inlet pipe 306, and then the hot air is split into two vertical pipes 302, and then split into multiple annular pipes 303 through multiple connecting pipes, and then blown out through multiple air blowing heads 304 to surround the evaporator 101 and perform defrosting. The water droplets generated during defrosting drip downward into the conical guide shroud 305 for downward discharge. A flexible hose for water drainage can be connected to the bottom end of the conical guide shroud 305 in advance to further perform the designated drainage work.

[0053] When subsequent personnel remove the baffle 102 to inspect and maintain the evaporator 101, when personnel pull the two pull rings 504, the two pull rings 504 cause the two rectangular locking rods 502 to separate from their corresponding rectangular locking rings 5. The rectangular locking rods 502 slide laterally within their corresponding rectangular sleeves 501, compressing the springs 503, achieving a simple pull-to-unlock effect. After unlocking, the base plate 3 can be lowered to move downwards from the outer casing 1. The base plate 3 causes the four vertical guide rods 401 to slide downwards within the four vertical guide sleeves 4, performing vertical guiding work. When the vertical guide rods 401 cause their corresponding anti-detachment blocks 402 to move downwards and contact the top of the vertical guide sleeve 4, they are blocked and restricted by the blocks. The four vertical guide sleeves 4 sequentially support the base plate 3 through the four anti-detachment blocks 402 and the four vertical guide rods 401. By moving the base plate 3 downward, multiple annular pipes 303 are moved downward through the first annular pipe 301 and the two vertical pipes 302 to remove the obstruction of the evaporator 101. This allows the base plate 3 to be easily unlocked and moved downward by simple pulling, and the multiple annular pipes 303 to be moved downward to remove the obstruction of the evaporator 101. This avoids the phenomenon that the multiple annular pipes 303 surround and obstruct the evaporator 101, making it difficult to inspect and maintain it later. This facilitates the inspection and maintenance of the evaporator 101 and improves the convenience of subsequent maintenance.

[0054] After maintenance, when the bottom needs to be sealed again, pull the two pull rings 504 close together again, compressing the two springs 503. Then, the two pull rings 504 can be moved upwards. The two pull rings 504, through the two rectangular clamps 502 and the two rectangular sleeves 501, drive the bottom plate 3 to move upwards and reset. The bottom plate 3 drives multiple annular tubes 303 to move upwards and reset, once again surrounding and sleeved on the outside of the evaporator 101. Then, the two pull rings 504 repel each other and move back, driving the two rectangular clamps 502 to move back and engage with the corresponding rectangular clamps 5, releasing the compression force on the two springs 503. The two springs 503 provide lateral support for the two rectangular clamps 502, and the engagement of the two rectangular clamps 502 with the two rectangular clamps 5 provides vertical rigid support, thereby achieving a locking support for the bottom plate 3, which can then be used again.

[0055] Example 2

[0056] like Figure 4 As shown, this embodiment differs from Embodiment 1 in that: the top of the vertical guide rod 401 is detachably connected to an anti-detachment block 402, the bottom of the anti-detachment block 402 is fixedly connected to an internal threaded sleeve 403, the top of the outer side of the vertical guide rod 401 is provided with an external thread, the internal threaded sleeve 403 is spirally screwed onto the corresponding external thread, and the bottom of the anti-detachment block 402 is bonded and fixed with a rubber block that is in tight contact with the top of the corresponding vertical guide rod 401.

[0057] It should be noted that the internal thread sleeve 403 is made of stainless steel, and the external thread has a high wear-resistant and load-bearing specification of 0.2-0.3mm. The stainless steel material has the advantages of high hardness, high wear resistance and good maintenance-free effect. Together with the rubber block, it is squeezed between the anti-loosening block 402 and the vertical guide rod 401. The resulting elastic tension ensures the thread is locked and guarantees the long-term connection stability.

[0058] This embodiment allows the anti-detachment block 402 to be disassembled separately to release the support state, facilitating the direct disassembly and removal of the base plate 3 and its top structure, thus further improving the flexibility of use.

[0059] The usage method of this embodiment is as follows: The difference from Embodiment 1 is that it has the following functions: By using the set internal thread sleeve 403, external thread and rubber block to cooperate, the anti-detachment block 402 is connected to the vertical guide rod 401 by screwing the internal thread sleeve 403 and the external thread. When it needs to be removed after the bottom plate 3 is lowered, the personnel rotate the anti-detachment block 402 in the opposite direction to make it drive the internal thread sleeve 403 to separate from the external thread, thereby separating the anti-detachment block 402 from the vertical guide rod 401. Then the bottom plate 3 can continue to be lowered, driving the four vertical guide rods 401 to move out from the four vertical guide sleeves 4, so that the bottom plate 3 can be directly removed. This achieves the effect of conveniently disassembling and removing the bottom plate 3 and its top structure, further improving the flexibility of use.

[0060] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A defrosting device for an air source heat pump, comprising a housing (1) and an evaporator (101) fixedly mounted on the inner wall of the top of the housing (1), wherein a defrosting device body is installed inside the housing (1), characterized in that: The bottom of the outer shell (1) is set as an opening, and an inspection hole is provided on the front side of the outer shell (1). A baffle (102) adapted to the inspection hole is fixedly installed on the front side of the outer shell (1) by four screws. The defrosting device body includes: The base plate (3) is movably fitted inside the bottom of the outer shell (1); The annular pipe (301) is fixedly installed on the top of the base plate (3), and an L-shaped air inlet pipe (306) for connecting with an external hot air blower to supply hot air is fixedly connected to its bottom right side. The base plate (3) is sleeved on the L-shaped air inlet pipe (306). The surrounding defrosting and drainage assembly is connected and fixed to the top of the annular pipe (301) and movably sleeved on the outside of the evaporator (101); Rectangular retaining rings (5), which are in two sets and are respectively fixedly connected to the bottom sides of the outer shell (1); The horizontal card support assembly consists of two sets, which are fixedly connected to the bottom sides of the base plate (3) and are movably locked into the corresponding rectangular card rings (5); The vertical guide support assembly is fixedly connected between the top of the base plate (3) and the inner wall of the outer shell (1).

2. A defrosting device for an air source heat pump according to claim 1, characterized in that: The surrounding defrosting and drainage assembly includes two vertical pipes (302) with sealed top ends. The two vertical pipes (302) are respectively connected and fixed to the top two sides of the annular pipe (301). The two vertical pipes (302) are connected and fixed with connecting pipes at equal intervals on the side of the two vertical pipes (302). The two connecting pipes on the left and right sides are connected and fixed with the same annular pipe (303). Multiple annular pipes (303) are sleeved on the outside of the evaporator (101). Multiple air blowing heads (304) are connected and fixed in an annular shape at equal intervals on the inside of the annular pipes (303). The evaporator (101) is located between multiple air blowing heads (304). The bottom of the lowest annular pipe (303) is fixedly connected with a conical guide hood (305). The bottom end of the conical guide hood (305) extends to the bottom of the base plate (3).

3. A defrosting device for an air source heat pump according to claim 1, characterized in that: The horizontal support assembly includes a rectangular sleeve (501). Two rectangular sleeves (501) are fixedly connected to the bottom sides of the base plate (3). The sides of the two rectangular sleeves (501) that are close to each other are set as a sealing structure. A rectangular clamping rod (502) is slidably fitted inside the rectangular sleeve (501). The opposing ends of the two rectangular clamping rods (502) are respectively movably clamped into the corresponding rectangular clamping ring (5) and set as an arc structure. A spring (503) is fixedly connected between the rectangular clamping rod (502) and the inner wall of the corresponding rectangular sleeve (501) away from its opening. A rectangular through hole is opened at the bottom of the rectangular sleeve (501). A pull ring (504) is fixedly connected to the bottom of the rectangular clamping rod (502). The bottom of the pull ring (504) moves through the corresponding rectangular through hole and extends to the bottom of the rectangular sleeve (501).

4. A defrosting device for an air source heat pump according to claim 1, characterized in that: The vertical guide support assembly includes four vertical guide rods (401) that are fixedly connected to the top of the base plate (3) in a rectangular shape. Two vertical guide sleeves (4) are fixedly connected to the inner walls of both sides of the outer shell (1). The vertical guide sleeves (4) are movably sleeved on the outside of the corresponding vertical guide rods (401). The top of the vertical guide rods (401) is connected to an anti-detachment block (402), which is located above the corresponding vertical guide sleeves (4).

5. A defrosting device for an air source heat pump according to claim 4, characterised in that: An anti-detachment block (402) is welded to the top of the vertical guide rod (401).

6. A defrosting device for an air source heat pump as claimed in claim 4, characterised in that: The top end of the vertical guide rod (401) is detachably connected to an anti-detachment block (402).

7. A defrosting device for an air source heat pump according to claim 6, characterised in that: The bottom of the anti-detachment block (402) is fixedly connected to an internal threaded sleeve (403), and the top of the outer side of the vertical guide rod (401) is provided with an external thread. The internal threaded sleeve (403) is spirally sleeved on the corresponding external thread. The bottom of the anti-detachment block (402) is bonded and fixed with a rubber block that is squeezed and contacted with the top of the corresponding vertical guide rod (401).

Images