Photovoltaic direct-drive heat pump air conditioning compressor and working method

Abstract

The application belongs to the technical field of engineering elements, and particularly relates to a sealing structure, especially to a photovoltaic direct-drive heat pump air conditioner compressor and a working method; wherein one kind of photovoltaic direct-drive heat pump air conditioner compressor comprises: a self-sealing joint arranged on the compressor; an elastic ejector pin telescopically arranged in the self-sealing joint and adapted to rotate circumferentially relative to the self-sealing joint; a sealing element arranged on the inner wall of the self-sealing joint and abutting against the outer wall of the elastic ejector pin; and an adjusting element sleeved on the outer wall of the elastic ejector pin and axially provided with a plurality of through holes; wherein the elastic ejector pin protrudes outward from the self-sealing joint, the adjusting element is synchronously away from the sealing element, and the inner ring of the sealing element abuts against the outer wall of the elastic ejector pin to seal the self-sealing joint; when the elastic ejector pin is retracted, it rotates relative to the self-sealing joint to reduce the abrasion of the end of the elastic ejector pin; and through the adjusting element, the sealing element and the rotationally arranged elastic ejector pin, the elastic ejector pin can be prevented from being damaged by friction during the telescopic process.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of engineering elements, and particularly relates to a sealing structure, in particular to a photovoltaic direct-drive heat pump air conditioner compressor and a working method. BACKGROUND

[0002] The photovoltaic direct-drive heat pump system significantly improves energy utilization by directly coupling photovoltaic power generation and compressor driving. Among them, the compressor as the core power component of the refrigerant cycle, its sealing and reliability directly affect the system energy efficiency and service life. At present, the fully enclosed compressor has become the mainstream technical scheme due to its compact structure and low leakage risk. However, the connection part (such as the self-sealing joint) of the compressor and the external pipeline is still a weak link of sealing.

[0003] In the related art, the current compressor is usually equipped with a self-sealing joint due to frequent switching, maintenance or replacement of equipment. The self-sealing joint is usually provided with a spring and a thimble inside. When the joint is connected, the thimble is opened to allow fluid to pass through; when the joint is disconnected, the thimble is automatically reset under the action of the spring to seal the fluid passage and prevent medium leakage or external pollutants from entering.

[0004] However, the frequent disassembly of the self-sealing joint causes the connection part of the thimble end of the self-sealing joint and the external pipeline to be worn or cracked.

[0005] Therefore, there is an urgent need to develop a photovoltaic direct-drive heat pump air conditioner compressor and a working method to solve the above problems.

[0006] It should be noted that the above information disclosed in the background section of the present application is only used to understand the background of the present application, and therefore, the above description is not considered to constitute the information of the related art. SUMMARY

[0007] The present application provides at least a photovoltaic direct-drive heat pump air conditioner compressor and a working method.

[0008] In a first aspect, the present application provides a photovoltaic direct-drive heat pump air conditioner compressor, comprising:

[0009] a self-sealing joint arranged on the compressor;

[0010] a flexible thimble telescopically arranged at one end of the self-sealing joint and adapted to rotate circumferentially relative to the self-sealing joint;

[0011] a sealing member arranged on the inner wall of the self-sealing joint and abutting against the outer wall of the flexible thimble;

[0012] an adjusting member rotatably sleeved on the outer wall of the flexible thimble and adapted to abut against the sealing member;

[0013] When not assembled, the elastic pin protrudes outward from the self-sealing joint, and the inner ring of the sealing element abuts against the outer wall of the elastic pin to seal the self-sealing joint.

[0014] During assembly, the external connecting pipe is threaded onto the outer wall of the self-sealing joint. The boss inside the external connecting pipe pushes the elastic pin to retract into the self-sealing joint, and the elastic pin rotates synchronously with the external connecting pipe to reduce wear between the end of the elastic pin and the boss.

[0015] In one alternative embodiment, the seal includes a positioning ring fixed in a groove on the inner wall of the self-sealing connector and parallel to the axis of the self-sealing connector.

[0016] A retaining ring is vertically positioned within the inner ring of the positioning ring and extends radially along the self-sealing joint.

[0017] A sealing ring is inclinedly disposed within the inner ring of the fixed ring and extends toward the elastic pin;

[0018] When not assembled, the elastic pin protrudes from the end of the self-sealing connector, and the inner ring of the sealing ring abuts against the outer wall of the elastic pin to seal the self-sealing connector.

[0019] When the elastic pin retracts into the self-sealing joint, the self-sealing joint drives the adjusting component to move axially inward in sync. The adjusting component pushes the sealing ring outward to open the self-sealing joint.

[0020] In one alternative embodiment, the included angle between the sealing ring and the axis of the self-sealing joint is 43±5°.

[0021] In one alternative embodiment, the radial length of the sealing ring is 1.2-1.4 times the distance between the fixing ring and the outer wall of the elastic pin.

[0022] In one alternative embodiment, the axial length of the adjusting member is 2-3 times the axial length of the retaining ring.

[0023] In one alternative embodiment, the adjusting member is hollow inside, and the radial length of the adjusting member is 0.5-0.7 times the distance between the inner wall of the self-sealing connector and the outer wall of the elastic pin.

[0024] In one optional embodiment, at least two scrapers are radially evenly distributed on the outer wall of the elastic pin, and the two sides of the scrapers abut against the inner wall of the inner cavity of the adjusting member.

[0025] When the elastic ejector pin rotates relative to the adjusting component, the scraper is suitable for scraping away impurities from the inner wall of the cavity.

[0026] In one optional embodiment, a return spring is provided inside the self-sealing connector, one end of the return spring abutting against the elastic pin, and the return spring is adapted to push the elastic pin to slide outward.

[0027] In one alternative embodiment, in the initial state, the distance between the adjusting member and the fixed ring is 0.4-0.6 times the travel of the elastic pin.

[0028] In one optional embodiment, a limiting disc is provided at the inner end of the elastic ejector pin, the diameter of which is larger than the diameter of the elastic ejector pin.

[0029] Secondly, this disclosure also provides a compressor operating method, the operating method comprising:

[0030] When not assembled, the elastic pin protrudes from the self-sealing joint. At this time, the adjusting element is away from the sealing element, and the inner ring of the sealing element abuts against the outer wall of the elastic pin to seal the self-sealing joint.

[0031] During assembly, the external connecting pipe is threaded onto the outer wall of the self-sealing joint. The boss inside the external connecting pipe pushes the elastic pin to retract into the self-sealing joint, and the elastic pin rotates synchronously with the external connecting pipe.

[0032] To reduce frictional damage between the end of the elastic ejector pin and the boss;

[0033] After the elastic pin retracts into the self-sealing connector, the adjusting element pushes the sealing element to deform, thereby opening the self-sealing connector and allowing the external connecting pipeline to connect with the self-sealing connector.

[0034] The beneficial effects of the present invention are that it provides a photovoltaic direct-drive heat pump air conditioner compressor and its working method. By rotating the elastic pin and cooperating with the external pipeline, when the external connecting pipeline is threadedly connected to the self-sealing joint, the external connecting pipeline drives the elastic pin to move into the self-sealing joint and rotate synchronously with the external connecting pipeline. The elastic pin converts sliding friction into synchronous rotation, reducing friction damage at the end of the elastic pin.

[0035] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention are realized and obtained through the structures particularly pointed out in the description and the drawings.

[0036] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the specific embodiments or related technologies of the present invention, the drawings used in the description of the specific embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0038] Figure 1 A perspective view of a photovoltaic direct-drive heat pump air conditioner compressor provided in an embodiment of this disclosure;

[0039] Figure 2 A front view of a photovoltaic direct-drive heat pump air conditioner compressor provided in an embodiment of this disclosure;

[0040] Figure 3 A structural block diagram of a photovoltaic direct-drive heat pump air conditioner compressor provided in an embodiment of this disclosure;

[0041] Figure 4 A partial front view of the retractable ejector pin retracting into the self-sealing connector, as provided in an embodiment of this disclosure.

[0042] In the picture:

[0043] 1. Compressor; 2. Self-sealing connector; 20. Return spring;

[0044] 3. Flexible ejector pin; 30. Limiting plate;

[0045] 4. Seals; 41. Positioning ring; 42. Retaining ring; 43. Sealing ring;

[0046] 5. Adjusting component; 51. Through hole; 52. Scraper;

[0047] 6. External connecting pipes; 60. Boss. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0049] In this document, when it is mentioned that a first component is located on a second component, this can mean that the first component can be directly formed on the second component, or that a third component can be inserted between the first and second components. Furthermore, in the accompanying drawings, the thickness of the components may be exaggerated or reduced for the purpose of effectively describing the technical content.

[0050] In this document, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as “at least one of…” modify an entire column of elements when following a column of elements. For example, the expression “at least one of a, b, and c” should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0051] The terminology used herein is for the purpose of describing specific exemplary configurations only and is not intended to be limiting. As used herein, the singular articles “a,” “an,” and “the” may also be intended to include plural forms unless otherwise clearly stated herein. The terms “comprising,” “including,” and “having” are inclusive and thus specify the presence of features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein should not be construed as requiring them to be performed in the specific order discussed or shown, unless specifically identified as such. Additional or alternative steps may be employed.

[0052] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.

[0053] Research has found that among related technologies, photovoltaic direct-drive heat pump systems significantly improve energy efficiency by directly coupling photovoltaic power generation with compressor drive. The compressor, as the core power component of the refrigerant cycle, directly affects the system's energy efficiency and lifespan due to its sealing performance and reliability. Currently, fully enclosed compressors have become the mainstream technology due to their compact structure and low leakage risk. However, the connection points between the compressor and external piping (such as self-sealing joints) remain weak points in sealing.

[0054] In related technologies, current compressors often use self-sealing connectors due to frequent switching, maintenance, or equipment replacement. These self-sealing connectors typically contain a spring and a ejector pin. When the connector is connected, the ejector pin opens to allow fluid to pass through; when disconnected, the ejector pin automatically resets under the action of the spring, sealing the fluid passage and preventing media leakage or the entry of external contaminants.

[0055] However, frequent disassembly and reassembly of the self-sealing connector can cause cracks or wear at the connection point between the connector's pin end and the external pipeline, affecting the equipment's lifespan. Furthermore, the internal elastic sealing ring (such as an O-ring) of the self-sealing connector requires very precise alignment with the corresponding pipeline. Even slight misalignment or angular deviation during installation can lead to excessive localized stress or uneven compression of the sealing ring, potentially causing leakage during the initial pressurization.

[0056] Therefore, there is an urgent need to develop a photovoltaic direct-drive heat pump air conditioner compressor and its working method to solve the above problems.

[0057] The defects in the above solutions and the reasons for their occurrence are the results of the inventors' practice and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure should be considered as the inventors' contributions to this disclosure.

[0058] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0059] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0060] like Figures 1 to 4 As shown, at least one embodiment provides a compressor for a photovoltaic direct-drive heat pump air conditioner, including: a self-sealing connector 2, which is disposed on a compressor 1; the compressor 1 is used in a heat pump air conditioner; one end of the self-sealing connector 2 is connected to the compressor 1, and the other end is threadedly connected to an external connecting pipe 6.

[0061] Reference Appendix Figure 2 An elastic ejector pin 3 is telescopically disposed within the self-sealing connector 2 and is adapted to rotate circumferentially relative to the self-sealing connector 2. A return spring 20 is disposed within the self-sealing connector 2, one end of which abuts against the elastic ejector pin 3. The return spring 20 is adapted to push the elastic ejector pin 3 outward. In the initial state, the return spring 20 pushes the elastic ejector pin 3 outward from the self-sealing connector 2, so that the sealing element 4 seals the self-sealing connector 2. The outer end of the elastic ejector pin 3 has a groove that matches the boss 60 in the external connecting pipe 6.

[0062] Reference Appendix Figure 3A sealing element 4 is disposed on the inner wall of the self-sealing connector 2, with its inner ring abutting against the outer wall of the elastic pin 3. In the initial state, i.e., when the elastic pin 3 protrudes from the self-sealing connector 2, the inner ring of the sealing element 4 abuts against the outer wall of the elastic pin 3 to seal the self-sealing connector 2. An adjusting element 5 is sleeved on the outer wall of the elastic pin 3 and has several through holes 51 axially formed. When the adjusting element 5 pushes the sealing element 4 to deform, the liquid flows through the through holes 51 into the inner cavity of the self-sealing connector 2 and then to the external connecting pipe 6. When not assembled, the elastic pin 3 protrudes outward from the self-sealing connector 2, and at this time the adjusting element 5 is in a state away from the sealing element 4. The inner ring of the sealing element 4 abuts against the outer wall of the elastic pin 3 to seal the self-sealing connector 2. During assembly, the external connecting pipe 6 is threaded onto the outer wall of the self-sealing connector 2, and the boss 60 inside the external connecting pipe 6 pushes the elastic pin 3 to retract into the self-sealing connector 2; the elastic pin 3 rotates with the external connecting pipe 6 to reduce wear between the end of the elastic pin 3 and the boss 60.

[0063] Reference Appendix Figure 3 The sealing element 4 includes: a positioning ring 41, which is fixed in a groove on the inner wall of the self-sealing joint 2 and parallel to the axis of the self-sealing joint 2; a fixing ring 42, which is vertically disposed in the inner ring of the positioning ring 41 and extends radially along the self-sealing joint 2; and a sealing ring 43, which is obliquely disposed in the inner ring of the fixing ring 42 and extends toward the elastic pin 3. The positioning ring 41, the fixing ring 42 and the sealing ring 43 are integrally disposed and are made of fluororubber (FKM) material, which is resistant to high temperature (-20℃-250℃), oil, and chemical corrosion.

[0064] Reference Appendix Figure 3 The included angle between the sealing ring 43 and the axis of the self-sealing joint 2 is 43±5°. Figure 3 In this context, 'a' represents the angle of inclination between the sealing ring 43 and the axis of the self-sealing connector 2. Preferably, this angle 'a' is 45°. The radial length of the sealing ring 43 is 1.2-1.4 times the distance between the fixing ring 42 and the outer wall of the elastic ejector pin 3. The length and angle design of the sealing ring 43 ensure that the sealing effect is maintained even if the ejector pin wears 0.01mm. Figure 3 F1 in the figure represents the pressure of the liquid inside the self-sealing connector 2 on the sealing ring 43. When the elastic pin 3 protrudes from the self-sealing connector 2, the pressure of the liquid on the sealing ring 43 pushes the sealing ring 43 to fit more tightly against the outer wall of the elastic pin 3, further improving the sealing performance between the sealing ring 43 and the elastic pin 3. Specifically, when the elastic pin 3 protrudes from the self-sealing connector 2, the inner ring of the sealing ring 43 abuts against the outer wall of the elastic pin 3 to seal the self-sealing connector 2; when the elastic pin 3 retracts into the self-sealing connector 2, the adjusting member 5 pushes the sealing ring 43 outward to open the self-sealing connector 2.

[0065] Reference Appendix Figure 4The axial length of the adjusting member 5 is 2-3 times the axial length of the fixed ring 42. When the elastic ejector pin 3 retracts into the self-sealing connector 2, the adjusting member 5 compresses the fixed ring 42, causing it to deform, specifically as follows: Figure 4 As shown, the liquid inside the self-sealing connector 2 flows outward through the through hole 51. The adjusting member 5 is hollow inside, and the radial length of the adjusting member 5 is 0.5-0.7 times the distance between the inner wall of the self-sealing connector 2 and the outer wall of the elastic pin 3. Figure 4 In the diagram, F1 represents the flow direction of the liquid inside the self-sealing connector 2; F2 represents the movement direction of the elastic ejector pin 3. Preferably, there are four scraper blades 52, which are evenly distributed on the outer wall of the elastic ejector pin 3. There is a gap between two adjacent scraper blades 52. When the self-sealing connector 2 is in the open state, the liquid inside the self-sealing connector 2 passes through the through hole 51 through the gap between two adjacent scraper blades 52.

[0066] Please refer to the attached document again. Figure 4 At least two scraper blades 52 are radially distributed on the outer wall of the elastic pin 3, and the two sides of the scraper blades 52 abut against the inner wall of the inner cavity of the adjusting member 5; wherein, when the elastic pin 3 rotates relative to the adjusting member 5, the scraper blades 52 are suitable for scraping off impurities from the inner wall of the inner cavity.

[0067] Reference Appendix Figure 3 When not assembled, the distance between the adjusting member 5 and the fixing ring 42 is 0.4-0.6 times the travel of the elastic ejector pin 3. A limiting disc 30 is provided at the inner end of the elastic ejector pin 3, the diameter of which is larger than the diameter of the elastic ejector pin 3. The limiting disc 30 prevents the elastic joint from detaching from the self-sealing joint 2.

[0068] At least one embodiment provides a compressor operating method, the operating method comprising:

[0069] When not assembled, the elastic pin 3 protrudes from the self-sealing connector 2. At this time, the adjusting member 5 is away from the sealing member 4, and the inner ring of the sealing member 4 abuts against the outer wall of the elastic pin 3 to seal the self-sealing connector 2.

[0070] During assembly, the external connecting pipe 6 is threaded onto the outer wall of the self-sealing connector 2. The boss 60 inside the external connecting pipe 6 pushes the elastic pin 3 to retract into the self-sealing connector 2, and the elastic pin 3 rotates synchronously with the external connecting pipe 6 to reduce frictional damage between the end of the elastic pin 3 and the boss 60.

[0071] After the elastic pin 3 retracts into the self-sealing connector 2, the adjusting member 5 pushes the sealing member 4 to deform, thereby opening the self-sealing connector 2 and connecting the external connecting pipeline to the self-sealing connector 2.

[0072] The working principle is as follows:

[0073] When not assembled, the return spring 20 pushes the elastic pin 3 outward to protrude from the self-sealing connector 2, at which time the inner ring of the sealing ring 43 tightly fits the outer wall of the elastic pin 3;

[0074] During assembly, when the external connecting pipe 6 is spirally sleeved on the outer wall of the self-sealing connector 2, the elastic pin 3 retracts into the self-sealing connector 2 and rotates synchronously with the external connecting pipe 6 to reduce the friction between the end wall of the self-sealing connector 2 and the external connecting pipe 6.

[0075] When the elastic pin 3 retracts into the self-sealing connector 2, the adjusting member 5 moves axially synchronously to compress the sealing ring 43 and the fixing ring 42 to deform, and the liquid in the self-sealing connector 2 flows outward through the through hole 51.

[0076] When the elastic ejector pin 3 rotates in the circumference, it drives the scraper 52 to rotate synchronously to clean the impurities in the adjusting part 5.

[0077] In the description of the embodiments of the present invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0078] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence unless expressly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed above may be referred to as a second element, component, region, layer, or segment.

[0079] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A photovoltaic direct-drive heat pump air conditioner compressor, characterized in that, include: Self-sealing connector (2), which is installed on compressor (1); The elastic ejector pin (3) is telescopically set at one end of the self-sealing connector (2) and is adapted to rotate circumferentially relative to the self-sealing connector (2); The sealing element (4) is disposed on the inner wall of the self-sealing connector (2), and the inner ring abuts against the outer wall of the elastic pin (3); Adjusting element (5), which is rotatably sleeved on the outer wall of elastic pin (3) and is adapted to abut against sealing element (4); When not assembled, the elastic pin (3) protrudes outward from the self-sealing connector (2), and the inner ring of the sealing element (4) abuts against the outer wall of the elastic pin (3) to seal the self-sealing connector (2). During assembly, the external connecting pipe (6) is threaded onto the outer wall of the self-sealing joint (2). The boss (60) inside the external connecting pipe (6) pushes the elastic pin (3) to retract into the self-sealing joint (2), and the elastic pin (3) rotates synchronously with the external connecting pipe (6) to reduce the wear between the end of the elastic pin (3) and the boss (60). The sealing element (4) includes: a positioning ring (41) which is fixed in a groove on the inner wall of the self-sealing joint (2) and is parallel to the axis of the self-sealing joint (2); A retaining ring (42) is vertically disposed within the inner ring of the positioning ring (41) and extends radially along the self-sealing joint (2); A sealing ring (43) is inclinedly disposed within the inner ring of the fixing ring (42) and extends toward the elastic pin (3). When not assembled, the elastic pin (3) protrudes from the end of the self-sealing connector (2), and the inner ring of the sealing ring (43) abuts against the outer wall of the elastic pin (3) to seal the self-sealing connector (2). When the elastic pin (3) retracts into the self-sealing connector (2), the elastic pin (3) drives the adjusting member (5) to move axially inward in sync. The adjusting member (5) pushes the sealing ring (43) outward to open the self-sealing connector (2). The adjusting component (5) has an internal hollow cavity; At least two scraper blades (52) are radially distributed on the outer wall of the elastic pin (3), and the two sides of the scraper blades (52) abut against the inner wall of the inner cavity of the adjusting member (5); The adjusting component (5) has several through holes (51) along the axial direction. The liquid passes through the through hole (51) and the regulating member (5). When the elastic pin (3) rotates relative to the adjusting member (5), the scraper (52) is suitable for scraping off impurities from the inner wall of the cavity.

2. The photovoltaic direct-drive heat pump air conditioner compressor as described in claim 1, characterized in that, The included angle between the axis of the sealing ring (43) and the axis of the self-sealing joint (2) is 43±5°.

3. The photovoltaic direct-drive heat pump air conditioner compressor as described in claim 1, characterized in that, The radial length of the sealing ring (43) is 1.2-1.4 times the distance between the outer wall of the fixing ring (42) and the elastic pin (3).

4. The photovoltaic direct-drive heat pump air conditioner compressor as described in claim 1, characterized in that, The axial length of the adjusting member (5) is 2-3 times the axial length of the fixed ring (42).

5. The photovoltaic direct-drive heat pump air conditioner compressor as described in claim 1, characterized in that, The radial length of the adjusting member (5) is 0.5-0.7 times the distance between the inner wall of the self-sealing connector (2) and the outer wall of the elastic pin (3).

6. The photovoltaic direct-drive heat pump air conditioner compressor as described in claim 1, characterized in that, A reset spring (20) is provided inside the self-sealing connector (2). One end of the reset spring (20) abuts against the elastic pin (3). The reset spring (20) is adapted to push the elastic pin (3) to slide outward.

7. The photovoltaic direct-drive heat pump air conditioner compressor as described in claim 1, characterized in that, In the initial state, the distance between the adjusting member (5) and the fixed ring (42) is 0.4-0.6 times the travel of the elastic pin (3).

8. The photovoltaic direct-drive heat pump air conditioner compressor as described in claim 1, characterized in that, The inner end of the elastic pin (3) is provided with a limiting plate (30), the diameter of which is larger than the diameter of the elastic pin (3).

9. A method for operating a compressor, characterized in that, The operating method of the photovoltaic direct-drive heat pump air conditioner compressor as described in any one of claims 1-8 includes: When not assembled, the elastic pin (3) protrudes from the self-sealing connector (2), at which time the adjusting member (5) moves away from the sealing member (4), and the inner ring of the sealing member (4) abuts against the outer wall of the elastic pin (3) to seal the self-sealing connector (2). During assembly, the external connecting pipe (6) is threaded onto the outer wall of the self-sealing connector (2). The boss (60) inside the external connecting pipe (6) pushes the elastic pin (3) to retract into the self-sealing connector (2), and the elastic pin (3) rotates synchronously with the external connecting pipe (6). To reduce frictional damage between the end of the elastic ejector pin (3) and the boss (60); After the elastic pin (3) retracts into the self-sealing connector (2), the adjusting element (5) pushes the sealing element (4) to deform, so as to open the self-sealing connector (2) and make the external connecting pipeline connected to the self-sealing connector (2).

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