Air source heat pump heat exchanger and air source heat pump system

Abstract

The invention discloses a heat exchanger of an air source heat pump and an air source heat pump system, and relates to the technical field of air source heat pumps, the heat exchanger of the air source heat pump comprises a refrigerant pipe comprising a connecting section and a heat dissipation section; the inner frame is arranged in the area defined by the refrigerant pipes and comprises a plurality of vertical plates and connecting rings, the vertical plates are circumferentially distributed at equal intervals with the central axis of the heat dissipation section as the center, the connecting rings penetrate through the vertical plates to be fixedly connected with the vertical plates, and the connecting ring at the lowest position is a bottom ring; the inner radiating fin is mounted on the connecting ring; the top ring is mounted at the top of the inner frame; mounting insertion plates fixed to the top ring are fixedly arranged at the tops and the bottoms of the outer frames, and the multiple outer frames abut against one another to define a cylindrical structure; the plurality of outer radiating fins are arranged in the outer frame; and the negative pressure fan is mounted at the top of the top ring. The air source heat pump system has the effects that the heat exchange efficiency between the air source heat pump system and air is improved, and then power consumption is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of air source heat pumps, and in particular to an air source heat pump heat exchanger and an air source heat pump system. Background Art

[0002] Air source heat pump is an energy-saving device that uses high-level energy to make heat flow from low-level heat source air to high-level heat source. It is usually installed on the roof or ground for centralized heating.

[0003] The air source heat pump system generally includes a condenser, an evaporator, a compressor, a filter, and an expansion valve, all of which are connected by refrigerant pipes. After the refrigerant is compressed by the compressor, its temperature rises, and it exchanges temperature with the liquid to be heated in the condenser. Some of it also exchanges heat with the air at the condenser. After that, the refrigerant passes through the filter and the expansion valve, where its temperature drops and enters the evaporator, where it exchanges heat with the air to increase its temperature, and then enters the compressor to circulate.

[0004] In the existing air source heat pump system, except for the part of the condenser for heat exchange, the evaporator occupies a large space. Generally, the plate-type heat dissipation fins are in contact with the refrigerant pipe for heat exchange. The heat exchange efficiency is low, which makes the temperature of the refrigerant entering the compressor low, thereby increasing the load and energy consumption of the compressor. Summary of the invention

[0005] In order to improve the defect that the heat exchange efficiency between the refrigerant pipe and the air of the air source heat pump system is low, resulting in increased compressor load and energy consumption, the present application provides an air source heat pump heat exchanger and an air source heat pump system.

[0006] The air source heat pump heat exchanger provided in this application adopts the following technical solution: An air source heat pump heat exchanger: comprising The refrigerant pipe includes a connecting section and a heat dissipation section. The heat dissipation section is annular with a notch. The multiple heat dissipation sections are arranged vertically and the notches face the same direction. One end of the notch of the heat dissipation section is an inlet and the other end is an outlet. The connecting section is used to connect the outlet of the heat dissipation section with the outlet of the adjacent heat dissipation section. The inner frame is arranged in the area surrounded by the refrigerant pipe, and includes a vertical plate and a connecting ring. The vertical plates are multiple and are equidistantly distributed in a circle with the central axis of the heat dissipation section as the center. One end of the vertical plates abuts against the inner wall of the heat dissipation section, and the other end faces the central axis of the heat dissipation section. The connecting ring passes through the multiple vertical plates and is fixedly connected to the vertical plates. The lowest connecting ring is the bottom ring. The inner heat sink is mounted on the connecting ring, arranged toward the central axis of the heat sink section and abutting against the heat sink section; Top ring, installed on the top of the inner frame; The outer frame has a fan-shaped upper surface, and mounting plug plates are fixedly arranged at the top and the bottom. Insertion grooves for inserting the mounting plug plates are provided on the outer walls of the mounting plug plates and the bottom ring. After the mounting plug plates are inserted, the positions of the mounting plug plates are fixed. Multiple outer frames abut against each other to form a cylindrical structure. There are multiple external heat sinks installed in the outer frame, arranged vertically, with outer arc grooves opened on the side walls facing the heat dissipation section, and the inner walls of the outer arc grooves are in contact with the heat dissipation section; The negative pressure fan is installed on the top of the top ring to make the air below flow upward.

[0007] Optionally, a sliding hole is provided in the middle of the inner heat sink for the connecting ring to slide horizontally therein, and a sliding groove is provided on the upper surface of the connecting ring for the inner heat sink to slide therein; A spring sheet is arranged between the inner wall of the sliding hole and the circumferential outer wall of the connecting ring; An inner arc groove is provided on a portion of the inner heat sink facing the heat sink section, and the inner arc groove can fit with the heat sink section.

[0008] Optionally, an upper lifting ring is fixedly provided in the middle of the side wall of the vertical plate away from the spring sheet, a pull rope is tied in the middle of the inner heat sink, an unlocking ring is slidably connected to the inner wall of the top ring, the outer edge of the unlocking ring can abut against the upper surface of the top ring, and the pull rope passes under the upper lifting ring and is fixedly connected to the unlocking ring.

[0009] Optionally, a slider for limiting the rotation of the unlocking ring is provided on the circumferential inner wall of the top ring, and a sliding groove for abutting against the slider is provided at a corresponding position of the top ring; The upper surface of the top ring is rotatably connected with an upper lifting ring, and a plurality of arc-shaped upper lifting arc plates are fixedly arranged on the upper surface of the upper lifting arc plates, and the same side of the upper lifting arc plates is an inclined surface. When the upper surface of the upper lifting arc plates abuts against the lower surface of the edge of the unlocking ring, the heat dissipation section is completely separated from the inner arc groove; The edge of the unlocking ring is provided with a lifting hole for the lifting ring to extend and slide.

[0010] Optionally, a locking ring groove is formed on the upper surface of the top ring, and a connecting ring groove communicating with the insertion groove is formed on the lower surface of the locking ring groove; A locking ring plate is slidably connected in the locking ring groove, and a locking arc plate is fixedly arranged at intervals on the lower surface of the locking ring plate; A locking groove is provided on the upper surface of the mounting plug plate, and after the locking ring plate rotates, the locking arc plate can be located in the locking groove.

[0011] Optionally, a buckle is rotatably connected to the outside of the side wall on the same side of the outer frame, and a slot is provided on the side wall on the other side of the outer frame, and the buckle can be rotatably inserted into the slot of the adjacent outer frame.

[0012] The present application also provides an air source heat pump system adopting the following technical solution: An air source heat pump system includes the above-mentioned heat exchanger, and also includes a base, a compressor, a condenser, a filter and an expansion valve, characterized in that: the compressor and the condenser are respectively located at the two ends of the upper surface of the base, the heat exchanger is located in the middle of the base as an evaporator, the filter and the expansion valve are installed on the bottom plate, and the bottom plate is also equipped with a protective frame for protecting the compressor and the condenser. A reinforcement plate spanning the middle of the bottom plate is fixed between the protective frames. The refrigerant pipes of multiple heat exchangers serving as evaporators are connected in series and connected to the refrigerant pipes of the air source heat pump system.

[0013] Optionally, the refrigerant pipe inlet of the heat exchanger is also connected to the refrigerant pipe outlet of the condenser to dissipate heat for the refrigerant pipe of the condenser; The heat exchanger that dissipates heat for the refrigerant pipe of the condenser is called a condensing radiator, and the condensing radiator is located in the middle of the upper surface of the base plate.

[0014] Optionally, the condensing radiators are arranged in pairs and the connecting sections of the internal refrigerant pipes are arranged opposite to each other; The heat exchangers serving as evaporators are arranged in pairs, and the connecting sections of the internal refrigerant pipes are arranged opposite to each other.

[0015] In summary, the present application includes at least one of the following beneficial technical effects: 1. The heat exchanger adopts a cylindrical structure, which also makes the internal refrigerant pipes arranged in a circular ring, thereby increasing the contact area with the heat sink in the effective space. The detachable installation of the inner frame and the outer frame can effectively facilitate disassembly and maintenance. The negative pressure fan on the top makes the outside air blow inward through the surroundings and discharged from the top, effectively increasing the effective contact area between the heat sink and the air, thereby improving the heat exchange efficiency; 2. The heat exchangers are all set in the middle of the base. On the one hand, the protective frame can be used to protect the heat exchangers. On the other hand, the empty space in the middle can be used to improve the efficiency of air circulation. At the same time, the efficiency of air passing through the compressor and condenser can be improved, thereby improving the efficiency of heat dissipation in other parts. Multiple heat exchangers can also be set to achieve multi-stage heat exchange; 3. The concentrated pair arrangement of the heat exchangers and the opening orientation of the connection sections can make the refrigerant pipes more concentrated, connected in the middle of the bottom plate, so that the refrigerant pipes are arranged more regularly without hindering the disassembly and replacement of the inner frame and outer frame of the heat exchanger. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application; Figure 2 is a schematic diagram showing a refrigerant pipe structure 1; Figure 3 is a schematic diagram showing a refrigerant pipe structure 2; Figure 4 It is a schematic diagram showing the structure of the inner frame; Figure 5 Yes Display Figure 4 Part A in the middle shows an enlarged view of the slip groove; Figure 6 is a sectional view showing the lift assembly; Figure 7 is a cross-sectional view showing a disassembled assembly; Figure 8 is a schematic diagram showing the structure of an air source heat pump system; Fig. 9 It is a schematic diagram showing the refrigerant pipe connection of the air source heat pump system.

[0017] In the figure, 1, refrigerant pipe; 11, heat dissipation section; 12, connecting section; 2, inner frame; 21, vertical plate; 211, lifting ring; 22, connecting ring; 221, inner heat sink; 2211, sliding hole; 2212, spring sheet; 2213, inner arc groove; 222, sliding groove; 223, bottom ring; 3, outer frame; 31, outer heat sink; 311, outer arc groove; 32, installation plug plate; 321, locking groove; 33, buckle; 34, slot; 4, top ring; 41, installation groove; 42, Locking ring groove; 43, connecting ring groove; 5, disassembly assembly; 51, unlocking ring; 511, lifting hole; 52, pull rope; 6, lifting assembly; 61, lifting ring; 611, turning handle; 62, lifting ring; 7, locking assembly; 71, locking ring plate; 72, locking arc plate; 8, negative pressure fan; 9, bottom plate; 91, compressor; 92, condenser; 93, evaporator; 94, protective frame; 941, reinforcement plate; 95, condensing radiator; 96, filter; 97, expansion valve. DETAILED DESCRIPTION

[0018] The following is combined with Figure 1-9 This application is described in further detail.

[0019] The embodiments of the present application disclose an air source heat pump heat exchanger and an air source heat pump system.

[0020] refer to Figure 1 The heat pump heat exchanger includes a refrigerant pipe 1, an outer frame 3, an inner frame 2 and a top ring 4.

[0021] refer to Figure 2 and Figure 3 The refrigerant pipe 1 includes a connecting section 12 and a heat dissipation section 11. The heat dissipation section 11 is a ring-shaped tube with a notch. Multiple heat dissipation sections 11 are arranged vertically and equidistantly with the notches facing the same direction. One end of the notch of the heat dissipation section 11 is an inlet, and the other end is an outlet. The connecting section 12 is used to connect the outlet of the heat dissipation section 11 with the outlet of the adjacent heat dissipation section 11. The inlet and outlet positions of the upper and lower adjacent heat dissipation sections 11 can be the same or staggered. Figure 1 The inner frame 2 is inserted into the space surrounded by the refrigerant pipe 1, and the outer frames 3 are multiple and surround the outer side of the refrigerant pipe 1.

[0022] refer to Figure 4 and Figure 5 The inner frame 2 includes a vertical plate 21 and a connecting ring 22. There are multiple vertical plates 21, which are equidistantly distributed in a circle with the central axis of the heat dissipation section 11 as the center. One end of the vertical plate 21 abuts against the inner wall of the heat dissipation section 11, and the other end faces the central axis of the heat dissipation section 11. There are multiple connecting rings 22, which are arranged vertically. The connecting ring 22 passes through multiple vertical plates 21 and is fixedly connected to the vertical plates 21. The lowest connecting ring 22 is a bottom ring 223. Multiple inner heat sinks 221 are installed on the connecting ring 22, and the inner heat sink 221 is made of metal. A sliding hole 2211 is provided in the middle of the inner heat sink 221 for the connecting ring 22 to slide horizontally therein, and a sliding groove 222 is provided on the upper surface of the connecting ring 22 for the inner heat sink 221 to slide therein. A spring sheet 2212 is provided between the inner wall of the sliding hole 2211 and the circumferential outer wall of the connecting ring 22. The inner heat sink 221 is provided with an inner arc groove 2213 at the portion facing the heat sink section 11, and the inner arc groove 2213 can fit with the heat sink section 11. The top ring 4 is fixedly mounted on the upper surface of the vertical plate 21, and the central axis of the top ring 4 is collinear with the central axis of the heat sink section 11. The top ring 4 is provided with a disassembly assembly 5 that allows multiple inner heat sinks 221 to be close to each other. A negative pressure fan 8 is installed on the top ring 4 by means of a flange connection, and the air outlet is arranged upward.

[0023] refer to Figure 6 The outer frame 3 is a frame body with a fan-shaped upper surface, and mounting plates 32 are fixedly provided at the top and bottom. The outer walls of the mounting plates and the bottom ring 223 are provided with insertion grooves for inserting the mounting plates 32. Multiple outer frames 3 can be abutted against each other to form a cylindrical structure. The middle part of the outer frame 3 facing the connecting section 12 is filled, and the inner walls of the remaining outer frames 3 are provided with multiple vertically arranged external heat sinks 31. The external heat sinks 31 are distributed in a divergent and equidistant circle with the central axis of the top ring 4 as the center. The side wall of the external heat sink 31 facing the heat dissipation section 11 is provided with an outer arc groove 311, and the inner wall of the outer arc groove 311 is in contact with the heat dissipation section 11. The external heat sink 31 is made of metal. The top ring 4 is provided with a locking component 7 for fixing the outer frame 3 and the top ring 4 to each other. A buckle 33 is rotatably connected to the outside of the side wall on the same side of the outer frame 3 , and a slot 34 is provided on the side wall on the other side of the outer frame 3 . The buckle 33 can be rotatably inserted into the slot 34 of the adjacent outer frame 3 .

[0024] Through the negative pressure fan 8 at the top, the external air passes through the outer frame 3 and the inner frame 2 and then enters the inner frame 2, and finally is discharged from the top. In this process, air can flow in from all sides, improving the efficiency of heat exchange between air and the heat dissipation section 11. The setting of the heat dissipation section 11 can make the positions of the inner arc groove 2213 and the outer arc groove 311 regular, so that the outer frame 3 and the inner frame 2 can be produced with uniform specifications. During installation, first disassemble the assembly 5 to make the multiple inner heat sinks 221 close to each other and squeeze the spring sheet 2212. After the vertical plate 21 abuts against the heat dissipation section 11 and is located at the bottom, the inner heat sink 221 is reset by disassembling the assembly 5, so that the inner arc groove 2213 fits with the heat dissipation section 11, improving the heat transfer efficiency. Then move the outer frame 3 so that the installation plug plate 32 is inserted into the corresponding installation groove 41, and the outer frame 3 and the top ring 4 are fixed in position by the locking assembly 7. Then rotate the buckle 33 so that the buckle 33 is located in the corresponding slot 34, and the adjacent outer frame 3 is fixed in position. At this time, the outer heat sink 31 is fitted with the heat dissipation section 11 through the outer arc groove 311, thereby improving the heat transfer effect of the heat dissipation section 11. The detachable setting of the outer frame 3 and the inner frame 2 also effectively improves the maintenance efficiency and reduces the maintenance cost. The centralized orientation setting of the connection section 12 enables the inlet and outlet of the refrigerant pipe 1 of the heat exchanger to be located in the same direction for easy connection.

[0025] refer to Figure 6 and Figure 7 The disassembly assembly 5 includes an unlocking ring 51 and a pull rope 52. An upper lifting ring 211 is fixedly provided in the middle of the side wall of the vertical plate 21 away from the spring sheet 2212. The unlocking ring 51 is slidably connected to the circumferential inner wall of the top ring 4. A slider for limiting the rotation of the unlocking ring 51 is provided on the circumferential inner wall of the top ring 4. A sliding groove abutting against the slider is provided at a corresponding position of the top ring 4. One end of the pull rope 52 is tied to the middle of the inner heat sink 221, and the other end is passed under the upper lifting ring 211 and fixedly connected to the unlocking ring 51. When the outer edge of the unlocking ring 51 abuts against the upper surface of the top ring 4, the inner arc groove 2213 abuts against the heat dissipation section 11. The top ring 4 is provided with a lifting assembly 6 for controlling the upward movement of the unlocking ring 51.

[0026] The lifting assembly 6 includes a lifting ring 6261 and a lifting arc plate. The lifting ring 6261 is rotatably connected to the upper surface of the top ring 4. There are multiple lifting arc plates, which are equidistantly distributed on the upper surface of the lifting ring 6261 in a circle with the central axis of the lifting ring 6261 as the center. The lifting arc plate is arc-shaped, and the same side of the lifting arc plate is an inclined surface. When the upper surface of the lifting arc plate abuts against the lower surface of the edge of the unlocking ring 51, the heat dissipation section 11 is completely disengaged from the inner arc groove 2213. The edge of the unlocking ring 51 is provided with a lifting hole 511 for the lifting ring 6261 to extend and slide. A rotating handle 611 is fixed to the circumferential outer wall of the upper surface of the lifting ring 6261.

[0027] By rotating the handle 611 and rotating the lifting ring 6261, the inclined surface of the lifting arc plate abuts against the inner wall of the lifting hole 511 and drives the unlocking ring 51 to move upward, and then the pull rope 52 drives multiple inner heat sinks 221 to approach each other, and the current state of the inner heat sink 221 is fixed by abutting the upper surface of the lifting arc plate against the lower surface of the edge of the unlocking ring 51, so as to facilitate the removal and installation and replacement of the inner frame 2. The unlocking ring 51 is driven to move up and down by rotating the lifting ring 6261, which effectively improves the efficiency of controlling the up and down movement of the unlocking ring 51.

[0028] refer to Figure 6 and Figure 7 The locking assembly 7 includes a locking ring plate 71 and a locking arc plate 72. A locking ring groove 42 is provided on the upper surface of the top ring 4, a connecting ring groove 43 connected to the insertion groove is provided on the lower surface of the locking ring groove 42, and a locking groove 321 is provided on the upper surface of the mounting plug plate 32. The locking ring plate 71 is slidably connected in the locking ring groove 42, and there are multiple locking arc plates 72, the number of which is the same as the number of the mounting plug plates 32, which are fixedly arranged on the lower surface of the locking ring plate 71 at intervals, and the position is opposite to the position of the mounting groove 41. When the mounting plug plate 32 is located in the mounting groove 41 and the outer arc groove 311 abuts against the heat dissipation section 11, the locking groove 321 is connected with the connecting ring groove 43. At this time, the locking ring plate 71 is rotated so that the locking arc plate 72 is located in the locking groove 321, and the position of the mounting plug plate 32 is fixed. The locking ring plate 71 is tightly pressed against the inner wall of the locking ring groove 42.

[0029] refer to Figure 8 and Fig. 9 , the embodiment of the present application also discloses an air source heat pump system, comprising the above-mentioned heat exchanger. The air source heat pump system also includes a base, a compressor 91, a condenser 92, a filter 96 and an expansion valve 97. The compressor 91 and the condenser 92 are respectively located at both ends of the upper surface of the base. The bottom plate 9 is also equipped with a protective frame 94 for protecting the compressor 91 and the condenser 92, and a reinforcing plate 941 across the middle of the bottom plate 9 is fixed between the protective frames 94.

[0030] There are multiple groups of heat exchangers, all installed in the middle of the upper surface of the bottom plate 9. Two heat exchangers form a group. Two groups of heat exchangers are used as evaporators 93, and one group of heat exchangers is used as a refrigerant pipe 1 at the end of the condenser 92 to cool down. The heat exchanger that dissipates heat for the refrigerant pipe 1 of the condenser 92 is called a condensation radiator 95. The connecting sections 12 of the two heat exchangers in each group are arranged oppositely. The refrigerant pipe 1 of the condenser 92 is connected to the inlet of the refrigerant pipe 1 of the condensation radiator 95 from the middle of the bottom plate 9, and the refrigerant pipes 1 of the two condensation radiators 95 are connected to each other from the middle of the bottom plate 9 and then connected to the filter 96 and the expansion valve 97 in the middle of the upper surface of the bottom plate 9, and then connected to the refrigerant pipe 1 of the heat exchanger as the evaporator 93. The refrigerant pipes 1 of the heat exchanger as the evaporator 93 are connected in series, and the outlet of the refrigerant pipe 1 of the last heat exchanger is connected to the compressor 91, and the outlet of the compressor 91 is connected to the condenser 92 through the refrigerant pipe 1 to form a refrigerant cycle.

[0031] Through this structural distribution setting, a new air source heat pump system is designed, so that the heat exchangers are all located in the middle of the base, and the equipment located on both sides is protected and reinforced by the reinforcement frame. The reinforcement frame is connected and reinforced by the reinforcement plate 941, and the heat exchanger located in the middle can also be protected, reducing the probability of damage to the heat sink on the heat exchanger and improving the protection of the refrigerant pipe 1. The paired setting of the heat exchanger and the orientation setting of the connecting section 12 cooperate with each other, so that the interfaces are all facing the middle, which is convenient for the connection of the refrigerant pipe 1, and the refrigerant pipe 1 will not be interfered with or damaged when the inner frame 2 and the outer frame 3 are disassembled and installed. The use of heat exchangers as the end heat dissipation devices of the evaporator 93 and the condenser 92 of the air source heat pump system can effectively improve the air circulation efficiency in a limited space. The air entering the inner frame 2 from all sides can effectively improve the efficiency of heat exchange with the heat dissipation section 11, thereby reducing the energy consumption of the compressor 91 and improving the utilization efficiency of air energy.

[0032] The implementation principle of an air source heat pump heat exchanger and an air source heat pump system in the embodiment of the present application is as follows: a brand-new method is adopted as the air heat exchange structure of the evaporator 93, so that the external air flows into the middle from all sides and is discharged upward in a centralized manner. Compared with the original plate-type evaporator 93 heat exchange structure, it can effectively improve the air heat exchange efficiency in a limited space. And after being applied in the air source heat pump system, the structure of the system distribution can be changed so that the heat exchangers that exchange heat with the air are all located in the middle, which not only effectively utilizes the frame protection, but also can effectively improve the air circulation efficiency in the middle, thereby improving the heat dissipation effect. On the other hand, the orientation setting of the connecting section 12 can make the connection of the refrigerant pipe 1 more regular and centralized, thereby improving the protection effect of the refrigerant pipe 1.

[0033] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An air source heat pump heat exchanger, characterized in that: include A refrigerant pipe (1) comprises a connecting section (12) and a heat dissipation section (11), wherein the heat dissipation section (11) is annular with a notch, a plurality of heat dissipation sections (11) are arranged vertically and the notches are oriented in the same direction, one end of the notch of the heat dissipation section (11) is an inlet and the other end is an outlet, and the connecting section (12) is used to connect the outlet of the heat dissipation section (11) with the outlet of an adjacent heat dissipation section (11); The inner frame (2) is arranged in the area surrounded by the refrigerant pipe (1), and comprises a vertical plate (21) and a connecting ring (22). The vertical plates (21) are multiple and are equidistantly distributed in a circle with the central axis of the heat dissipation section (11) as the center. One end of the vertical plates (21) abuts against the inner wall of the heat dissipation section (11), and the other end faces the central axis of the heat dissipation section (11). The connecting ring (22) passes through the multiple vertical plates (21) and is fixedly connected to the vertical plates (21). The lowest connecting ring (22) is a bottom ring (223); An inner heat sink (221) is mounted on the connecting ring (22), disposed toward the central axis of the heat sink section (11) and abutting against the heat sink section (11); A top ring (4) is mounted on the top of the inner frame (2); The outer frame (3) has a fan-shaped upper surface, and is fixedly provided with mounting plug plates (32) at the top and bottom. The outer walls of the mounting plate and the bottom ring (223) are provided with insertion grooves for inserting the mounting plug plates (32). After the mounting plug plates (32) are inserted, the position of the mounting plug plates (32) is fixed. A plurality of outer frames (3) are mutually abutted to form a cylindrical structure. A plurality of external heat sinks (31) are installed in the outer frame (3), are vertically arranged, and are provided with an external arc groove (311) on the side wall facing the heat sink section (11). The inner wall of the external arc groove (311) is in contact with the heat sink section (11); The negative pressure fan (8) is installed on the top of the top ring (4) so ​​that the air below flows upward.

2. The air source heat pump heat exchanger according to claim 1, characterized in that: A sliding hole (2211) is provided in the middle of the inner heat sink (221) for the connecting ring (22) to slide horizontally therein, and a sliding groove (222) is provided on the upper surface of the connecting ring (22) for the inner heat sink (221) to slide therein; A spring sheet (2212) is provided between the inner wall of the sliding hole (2211) and the circumferential outer wall of the connecting ring (22); An inner arc groove (2213) is provided at a portion of the inner heat sink (221) facing the heat sink section (11), and the inner arc groove (2213) can fit the heat sink section (11).

3. An air source heat pump heat exchanger according to claim 2, characterized in that: An upper lifting ring (211) is fixedly provided at the middle of the side wall of the vertical plate (21) away from the spring sheet (2212), a pull rope (52) is tied at the middle of the inner heat sink (221), an unlocking ring (51) is slidably connected to the inner wall of the top ring (4), the outer edge of the unlocking ring (51) can abut against the upper surface of the top ring (4), and the pull rope (52) is passed around the bottom of the upper lifting ring (211) and fixedly connected to the unlocking ring (51).

4. The air source heat pump heat exchanger according to claim 3, characterized in that: A slider for limiting the rotation of the unlocking ring (51) is provided on the circumferential inner wall of the top ring (4), and a sliding groove for abutting against the slider is provided at a corresponding position of the top ring (4); The upper surface of the top ring (4) is rotatably connected to an upper lifting ring (62) (61), and a plurality of arc-shaped upper lifting arc plates are fixedly arranged on the upper surface of the upper lifting arc plates. The same side of the upper lifting arc plates is an inclined surface. When the upper surface of the upper lifting arc plates abuts against the lower surface of the edge of the unlocking ring (51), the heat dissipation section (11) is completely separated from the inner arc groove (2213); The edge of the unlocking ring (51) is provided with a lifting hole (511) for the lifting ring (62) (61) to extend and slide.

5. The air source heat pump heat exchanger according to claim 1, characterized in that: A locking ring groove (42) is formed on the upper surface of the top ring (4), and a connecting ring groove (43) connected to the insertion groove is formed on the lower surface of the locking ring groove (42); A locking ring plate (71) is slidably connected in the locking ring groove (42), and a locking arc plate (72) is fixedly arranged at intervals on the lower surface of the locking ring plate (71); A locking groove (321) is provided on the upper surface of the installation plug plate (32), and after the locking ring plate (71) rotates, the locking arc plate (72) can be located in the locking groove (321).

6. The air source heat pump heat exchanger according to claim 1, characterized in that: A buckle (33) is rotatably connected to the outside of the side wall on the same side of the outer frame (3), and a clamping groove (34) is provided on the side wall on the other side of the outer frame (3). The buckle (33) can be rotatably clamped into the clamping groove (34) of the adjacent outer frame (3).

7. An air source heat pump system, comprising the heat exchanger according to any one of claims 1 to 6, further comprising a base, a compressor (91), a condenser (92), a filter (96) and an expansion valve (97), characterized in that: The compressor (91) and the condenser (92) are respectively located at the two ends of the upper surface of the base, the heat exchanger as the evaporator (93) is located in the middle of the base, the filter (96) and the expansion valve (97) are installed on the base plate (9), and the base plate (9) is also installed with a protection frame (94) for protecting the compressor (91) and the condenser (92), and a reinforcement plate (941) across the middle of the base plate (9) is fixed between the protection frames (94), and multiple refrigerant pipes (1) of the heat exchangers serving as the evaporators (93) are connected in series and connected to the refrigerant pipe (1) of the air source heat pump system.

8. An air source heat pump system according to claim 7, characterized in that: The inlet of the refrigerant pipe (1) of the heat exchanger is also connected to the outlet of the refrigerant pipe (1) of the condenser (92) to dissipate heat for the refrigerant pipe (1) of the condenser (92); The heat exchanger for dissipating heat from the refrigerant pipe (1) of the condenser (92) is called a condensation radiator (95), and the condensation radiator (95) is located in the middle of the upper surface of the base plate (9).

9. An air source heat pump system according to claim 8, characterized in that: The condensing radiators (95) are arranged in pairs and the connecting sections (12) of the internal refrigerant pipes (1) are arranged opposite to each other; The heat exchangers serving as evaporators (93) are arranged in pairs, and the connecting sections (12) of the internal refrigerant pipes (1) are arranged relative to each other.

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