A check valve structure with no enthalpy clearance volume and a scroll compressor

Abstract

This invention relates to the field of compressor technology, specifically to a check valve structure without enthalpy-increasing clearance volume and a scroll compressor. The check valve structure includes a stationary disc with an enthalpy-increasing channel. The stationary disc also has a groove within it, and a check valve strip is embedded in the groove. The enthalpy-increasing channel is divided into an enthalpy-increasing orifice and a pump body by the groove. One end of the check valve strip is a first end, located near the enthalpy-increasing channel and having a through hole. The other end of the check valve strip is a second end, connected to a pushing structure. A blind groove is formed on the end face of the groove, facing the end of the first end. This check valve structure without enthalpy-increasing clearance volume automatically prevents the refrigerant in the enthalpy-increasing channel from doing ineffective work, effectively avoiding energy waste in the compressor.

Description

Technical Field

[0001] This invention relates to the field of compressor technology, specifically to a check valve structure and a scroll compressor with no enthalpy clearance volume. Background Technology

[0002] Scroll compressors are widely used in air conditioning and heat pump systems due to their high efficiency, small size, and stable operation. Generally, a scroll compressor consists of a sealed casing, a moving scroll, a stationary scroll, a frame, a crankshaft, anti-rotation slip rings, a motor, and an oil supply system. However, in scroll compressors with enthalpy-enhancing structures, a hole needs to be drilled from the back of the stationary scroll to the front to form an enthalpy-enhancing channel, as a specific enthalpy-enhancing structure is required. This channel is not used when not performing enthalpy enhancement, resulting in the refrigerant within it being repeatedly compressed, wasting energy and performing ineffective work. Summary of the Invention

[0003] One of the objectives of this invention is to overcome the shortcomings of the prior art by providing a check structure without enthalpy increase clearance volume. This check structure without enthalpy increase clearance volume can automatically close the enthalpy increase channel when enthalpy increase is not initiated, preventing the refrigerant in the enthalpy increase channel from doing work in vain, effectively avoiding energy waste of the compressor, and can automatically connect the enthalpy increase channel after enthalpy increase is initiated, ensuring that enthalpy increase proceeds normally.

[0004] The second objective of this invention is to provide a scroll compressor.

[0005] To achieve one of the above objectives, the present invention provides the following technical solution:

[0006] A check valve structure with no enthalpy increase clearance volume is provided, including a stationary plate, an enthalpy increase channel on the stationary plate, a groove in the stationary plate, a check valve strip embedded in the groove, and the enthalpy increase channel being divided into an enthalpy increase hole and a pump body by the groove.

[0007] One end of the check bar is the first end, which is close to the enthalpy-increasing channel and has a through hole; the other end of the check bar is the second end, which is connected to a pushing structure.

[0008] The end face of the channel is provided with a blind groove, which is connected to the enthalpy enhancement system and faces the end of the first end.

[0009] When enthalpy enhancement is not activated, the pushing structure drives the check bar to move toward the enthalpy enhancement channel, the through hole is offset from the enthalpy enhancement orifice and the pump body, and the check bar closes the enthalpy enhancement orifice and the pump body; when enthalpy enhancement is activated, the enthalpy enhancement pressure in the enthalpy enhancement system drives the check bar to move toward the pushing structure, and the through hole is connected to the enthalpy enhancement orifice and the pump body respectively.

[0010] In some embodiments, the pushing structure includes an exhaust channel and an intake channel formed within the stationary plate, the intake channel and the exhaust channel being respectively connected to the second end, and the exhaust pressure of the exhaust channel and the intake pressure of the intake channel driving the check bar to move toward the enthalpy-increasing channel.

[0011] In some embodiments, the end of the second end is provided as a stepped convex surface, the stepped surface of the stepped convex surface is connected to the intake channel, and the vertical surface of the stepped convex surface is connected to the exhaust channel.

[0012] In some embodiments, one end of the channel is provided as a stepped channel, the horizontal surface of the stepped convex surface is embedded in the horizontal surface channel of the stepped channel and has a port for connection with the exhaust channel, and the vertical surface of the stepped convex surface is matched with the vertical surface of the stepped channel and has a port for connection with the intake channel.

[0013] In some embodiments, the actuating structure is a spring, one end of which is connected to the end face of the channel, and the other end abuts against the second end.

[0014] In some embodiments, the end of the first end is provided as an inclined surface, and the upper end of the inclined surface swings toward the second end.

[0015] In some embodiments, the surface of the stationary disc is provided with an exhaust hole, and when the check bar passes below the exhaust hole, the check bar is provided with an elongated hole extending along its length direction, the elongated hole corresponding to the exhaust hole.

[0016] In some embodiments, the blind groove is located above the end face of the channel, and the first end can abut against the lower end face of the channel.

[0017] In some embodiments, the side of the first end facing the enthalpy-increasing orifice is recessed to form a recessed surface, and a gas flow channel is formed between the recessed surface and the channel. The blind slot is connected to the enthalpy-increasing system through the gas flow channel.

[0018] The beneficial effects of the check valve structure of the present invention with no increase in enthalpy clearance volume are as follows:

[0019] (1) The present invention has a check structure without enthalpy increase clearance volume. It has a channel in the stationary plate and a check strip in the channel. Since the first end of the check strip is connected to a push structure and the second end of the check strip is close to the enthalpy increase channel, when the enthalpy increase is not activated, the thrust of the push structure is greater than the enthalpy increase pressure. The thrust of the push structure drives the check strip to move towards the enthalpy increase channel, so that the through hole on the check strip is misaligned with the enthalpy increase hole and the pump body. At this time, the check strip closes the enthalpy increase hole and the pump body, and the check strip closes the enthalpy increase channel to prevent the refrigerant from flowing back into the enthalpy increase channel. It plays the role of preventing enthalpy increase and reversal, and avoids the problem that the refrigerant in the clearance volume does ineffective work due to repeated compression in the enthalpy increase channel. Conversely, after enthalpy enhancement is initiated, the enthalpy enhancement pressure increases and exceeds the thrust of the driving structure. This pressure drives the check valve to move towards the driving structure, connecting the through-hole with the enthalpy enhancement orifice and the pump body. With the enthalpy enhancement orifice connected to the pump body, enthalpy enhancement and gas replenishment can continue. This check valve structure, without any clearance volume for enthalpy enhancement, can automatically close or open the enthalpy enhancement channel, eliminating any clearance volume in the enthalpy enhancement channel during non-enthalpy enhancement operations.

[0020] (2) The check structure of the present invention without enthalpy gap volume has a blind slot opened on the end face of the channel. When enthalpy is increased, the enthalpy replenishment gas flows to the blind slot first. The enthalpy replenishment gas drives the check bar to move through the airflow in the blind slot, thereby realizing the automatic movement of the check bar and then realizing enthalpy replenishment gas.

[0021] To achieve the second objective mentioned above, the present invention provides the following technical solution:

[0022] A scroll compressor is provided, including the aforementioned check structure with no enthalpy clearance volume. Attached Figure Description

[0023] Figure 1 This is a cross-sectional view of the check valve structure and stationary disk in operation when the enthalpy increase is not activated, showing the working state of the structure.

[0024] Figure 2 This is a cross-sectional view of the working state of the check valve structure with no enthalpy clearance volume when the enthalpy increase is activated, as shown in the embodiment.

[0025] Figure 3 This is a schematic diagram of the check strip structure shown in the embodiment.

[0026] Figure 4 This is a partial perspective view of the stationary disk shown in the embodiment.

[0027] Figure 5 This is a cross-sectional view of the stationary disk shown in the embodiment.

[0028] Figure Labels

[0029] 1. Static plate; 2. Channel; 3. Check bar; 4. Enthalpy-increasing hole; 5. Pump body; 6. First end; 7. Second end; 8. Blind groove; 9. Through hole; 10. Exhaust channel; 11. Intake channel; 12. Stepped convex surface; 13. Stepped channel; 14. Inclined surface; 15. Long strip hole; 16. Gas flow channel; 17. Recessed surface; 18. Exhaust hole. Detailed Implementation

[0030] Preferred embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the invention are shown in the drawings, it should be understood that the invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0031] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular forms “a” and “the” as used in this invention and the appended claims are intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0032] It should be understood that although the terms "first," "second," "third," etc., may be used in this invention to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this invention, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0033] Example 1

[0034] Scroll compressors are widely used in air conditioning and heat pump systems due to their high efficiency, small size, and stable operation. Generally, a scroll compressor consists of a sealed casing, a moving scroll, a stationary scroll, a frame, a crankshaft, anti-rotation slip rings, a motor, and an oil supply system. However, in scroll compressors with enthalpy-increasing structures, a hole needs to be drilled from the back of the stationary scroll to the front to form an enthalpy-increasing channel. This channel is not used when not performing enthalpy-increasing operations, resulting in the refrigerant within it being repeatedly compressed, wasting energy and performing ineffective work.

[0035] To address the aforementioned problems, this embodiment discloses a check valve structure with no enthalpy-increasing clearance volume. Figures 1-2As shown, the system includes a stationary disk 1, on which an enthalpy-increasing channel is provided. A channel 2 is also formed within the stationary disk 1, and a check valve 3 is embedded in the channel 2. The enthalpy-increasing channel is divided by the channel 2 into an enthalpy-increasing orifice 4 and a pump body 5. One end of the check valve 3 is a first end 6, which is close to the enthalpy-increasing channel and has a through hole 9. The other end of the check valve 3 is a second end 7, which is connected to a pushing structure. A blind groove 8 is formed on the end face of the channel 2. It is connected to the enthalpy-increasing system and faces the end of the first end 6; when enthalpy-increasing is not activated, the pushing structure drives the check bar 3 to move toward the enthalpy-increasing channel, the through hole 9 is offset from the enthalpy-increasing hole 4 and the pump body 5, and the check bar 3 closes the enthalpy-increasing hole 4 and the pump body 5; when enthalpy-increasing is activated, the enthalpy-increasing pressure in the enthalpy-increasing system drives the check bar 3 to move toward the pushing structure, and the through hole 9 is connected to the enthalpy-increasing hole 4 and the pump body 5 respectively.

[0036] The working principle of the aforementioned check valve structure without enthalpy-increasing clearance volume is as follows: When enthalpy increase is not activated, the thrust of the pushing structure is greater than the enthalpy-increasing pressure. The thrust of the pushing structure drives the check valve strip 3 to move towards the enthalpy-increasing channel, causing the through hole 9 on the check valve strip 3 to be misaligned with the enthalpy-increasing orifice 4 and the pump body 5. At this time, the check valve strip 3 closes the enthalpy-increasing orifice 4 and the pump body 5, and closes the enthalpy-increasing channel, preventing refrigerant from flowing back into the enthalpy-increasing channel. This achieves the effect of preventing enthalpy-increasing reversal and avoids the problem of refrigerant being repeatedly compressed in the enthalpy-increasing channel, causing the refrigerant in the clearance volume to do ineffective work. Conversely, after enthalpy increase is activated, the enthalpy-increasing pressure increases and is greater than the thrust of the pushing structure. The enthalpy-increasing pressure drives the check valve strip 3 to move to one side of the pushing structure, so that the through hole 9 is connected to the enthalpy-increasing orifice 4 and the pump body 5, and the enthalpy-increasing orifice 4 is connected to the pump body 5. At this time, enthalpy-increasing gas replenishment can continue. This check valve structure, which has no clearance volume for increasing enthalpy, can automatically close or open the enthalpy-increasing channel, and can eliminate the clearance volume of the enthalpy-increasing channel in non-enthalpy-increasing states.

[0037] The enthalpy-increasing system replenishes gas by increasing enthalpy through the enthalpy-increasing channel 4 opened in the stationary plate 1.

[0038] The function and benefits of the aforementioned check valve structure without enthalpy increase clearance volume are as follows: When enthalpy increase gas replenishment begins, the check valve 3 opens the enthalpy increase passage to complete the enthalpy increase. When enthalpy increase gas replenishment ends, the check valve 3 closes the enthalpy increase passage, hiding the enthalpy increase passage within the stationary disk 1, so that the refrigerant in the clearance volume caused by the enthalpy increase passage is not repeatedly compressed, thus avoiding ineffective work. At the same time, after the enthalpy increase gas replenishment ends, this structure prevents the gas in the compression chamber from flowing back into the enthalpy increase passage, thus achieving the effect of preventing enthalpy increase and reversal.

[0039] In this embodiment, the check strip 3 can be a rectangular strip, a circular strip with a fixed angle, or an elliptical strip.

[0040] Example 2

[0041] For ease of understanding, the following provides an example of a check valve structure with no enthalpy-increasing clearance volume. In practical applications, Figure 1-5 As shown, the pushing structure includes an exhaust channel 10 and an intake channel 11 opened in the stationary plate 1. The intake channel 11 and the exhaust channel 10 are respectively connected to the second end 7. The exhaust pressure of the exhaust channel 10 and the intake pressure of the intake channel 11 drive the check bar 3 to move toward the enthalpy-increasing channel.

[0042] When enthalpy enhancement is not activated, the exhaust pressure is greater than the enthalpy enhancement pressure. The exhaust pressure and intake pressure drive the check bar 3 to move towards the enthalpy enhancement channel until the second end 7 of the check bar 3 abuts against the end face of the channel 2. This causes the through hole 9 on the check bar 3 to be misaligned with the enthalpy enhancement hole 4 and the pump body 5. At this time, the check bar 3 closes the enthalpy enhancement hole 4 and the pump body 5, thus closing the enthalpy enhancement channel and preventing refrigerant from flowing back into the enthalpy enhancement channel. This achieves the effect of preventing reverse enthalpy enhancement and avoids the problem of refrigerant being repeatedly compressed in the enthalpy enhancement channel, causing the refrigerant in the clearance volume to do ineffective work. Conversely, after enthalpy enhancement is activated, the enthalpy enhancement pressure increases until it exceeds the exhaust pressure. The enthalpy enhancement pressure drives the check bar 3 to move towards the exhaust channel 10, so that the through hole 9 connects with the enthalpy enhancement hole 4 and the pump body 5. At this time, enthalpy enhancement and gas replenishment can continue.

[0043] In this embodiment, the end of the second end 7 is provided as a stepped convex surface 12. The horizontal surface of the stepped convex surface 12 is connected to the air intake channel 11, and the vertical surface of the stepped convex surface 12 is connected to the exhaust channel 10.

[0044] The end of the second end 7 is designed as a stepped convex surface 12, forming a horizontal and a vertical surface. When the enthalpy increase is not activated, the pressure of the enthalpy increase channel is released, and it is the same as the intake pressure of the intake channel 11. At this time, P 增 S 增 <P 排 S 排 +P 吸 S 吸 (P represents pressure, and S represents the area corresponding to the check strip 3 under this pressure). The pressure at the second end 7 of the check strip 3 is greater than the pressure at the first end 6. The check strip 3 moves towards the first end 6, ensuring that the compression chamber of the stationary disc 1 is completely sealed, with no enthalpy increase clearance, and preventing backflow of refrigerant from the pump body into the system, thus completing the enthalpy increase and anti-reverse function. When enthalpy increase is activated, the system's enthalpy increase is activated, causing P... 增 S 增 >P 排 S 排 +P 吸 S 吸 The pressure at the second end 7 of the check strip 3 is greater than the pressure at the first end 6. The check strip 3 moves towards the second end 7, opening the enthalpy-increasing channel and enabling enthalpy-increasing gas replenishment. After being fitted, this anti-reverse strip should act as the bottom surface of the stationary disc 1 teeth, engaging with the moving disc teeth to complete normal refrigerant compression.

[0045] In this embodiment, one end of the channel 2 is provided as a stepped channel 13. The horizontal surface of the stepped convex surface 12 is embedded in the horizontal channel of the stepped channel 13 and has a port for connection with the exhaust channel 10. The vertical surface of the stepped convex surface 12 is matched with the vertical surface of the stepped channel 13 and has a port for connection with the intake channel 11.

[0046] The stepped channel 13 facilitates the stable positioning of the stepped convex surface 12 and forms a port connected to the exhaust channel 10 and a port connected to the intake channel 11, so that the exhaust pressure of the exhaust channel 10 acts on the vertical surface of the stepped convex surface 12 through the port, and the pressure of the intake channel 11 acts on the stepped surface of the stepped convex surface 12 through the port.

[0047] The other components and principles are the same as in Embodiment 1, and will not be described again here.

[0048] Example 3

[0049] For ease of understanding, an embodiment of a check valve structure without enthalpy clearance volume is provided below. In practical applications, the pushing structure is a spring (not shown in the figure), one end of which is connected to the end face of the channel 2, and the other end abuts against the second end 7.

[0050] The pushing structure is a spring, which can generate a continuous pushing force. When the enthalpy increase is not activated, the spring can keep the check bar 3 moving along the direction of the first end 6.

[0051] The other components and principles are the same as in Embodiment 1, and will not be described again here.

[0052] Example 4

[0053] For ease of understanding, the following provides an example of a check valve structure with no enthalpy-increasing clearance volume. In practical applications, Figure 1-5 As shown, the surface of the stationary plate 1 is provided with a vent hole 18. When the check strip 3 passes below the vent hole 18, the check strip 3 has an elongated hole 15 extending along its length direction, and the elongated hole 15 corresponds to the vent hole 18. Conversely, when the check strip 3 does not pass below the vent hole 18, it is not necessary to provide a vent hole 18.

[0054] Since the surface of the static plate 1 has an exhaust hole 18, the check bar 3 has a corresponding elongated hole 15. The elongated hole 15 has sufficient length so that even if the check bar 3 moves, the elongated hole 15 can remain connected to the exhaust hole 18, ensuring that the exhaust hole 18 works normally.

[0055] The other components and principles are the same as in Embodiment 1, and will not be described again here.

[0056] Example 5

[0057] For ease of understanding, the following provides an example of a check valve structure with no enthalpy-increasing clearance volume. In practical applications, Figure 1-2 As shown, the end of the first end 6 is set as an inclined surface 14, and the upper end of the inclined surface 14 is slanted toward the second end 7. Setting the end of the first end 6 as an inclined surface 14 increases the contact surface between the first end 6 and the enthalpy-increasing gas supply, thereby improving the pressure effect of the enthalpy-increasing gas supply on the first end 6.

[0058] In this embodiment, the blind groove 8 is located on the upper part of the end face of the channel 2, and the first end 6 can abut against the lower part of the end face of the channel 2.

[0059] The blind groove 8 is located only on the upper part of the end face of the channel 2, so that the groove opening size of the blind groove 8 is smaller than the end area of ​​the first end 6, so that the second end 7 will not enter the blind groove 8. Since the first end 6 is a slope 14, the lowermost end of the slope 14 of the first end 6 abuts against the lower part of the end face of the channel 2. At this time, it can further prevent the first end 6 from blocking the blind groove 8. The slope 14 also facilitates the entry of enthalpy-increasing gas into the blind groove 8.

[0060] The other components and principles are the same as in Embodiment 1, and will not be described again here.

[0061] Example 6

[0062] For ease of understanding, the following provides an example of a check valve structure with no enthalpy-increasing clearance volume. In practical applications, Figure 1-3 As shown, the side of the first end 6 facing the enthalpy-increasing orifice 4 is sunken to form a sunken surface 17. A gas flow channel 16 is formed between the sunken surface 17 and the channel 2. The blind slot 8 is connected to the enthalpy-increasing system through the gas flow channel 16.

[0063] An airflow channel is formed on the side of the first end 6 facing the enthalpy-increasing hole 4, which facilitates the rapid entry of the enthalpy-increasing gas into the blind slot 8.

[0064] The other components and principles are the same as in Embodiment 1, and will not be described again here.

[0065] Example 7

[0066] The scroll compressor disclosed in this embodiment includes the check valve structure with no enthalpy clearance volume as described in Embodiment 1.

[0067] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0068] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms 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 on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0069] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0070] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0071] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A check valve structure with no enthalpy-increasing clearance volume, comprising a stationary disk (1), wherein the stationary disk (1) is provided with an enthalpy-increasing channel, characterized in that: The stationary plate (1) is also provided with a channel (2), and the channel (2) is inlaid with a check strip (3). The enthalpy increase channel is divided into an enthalpy increase hole (4) and a pump body (5) by the channel (2). One end of the check bar (3) is the first end (6), which is close to the enthalpy-increasing channel and has a through hole (9). The other end of the check bar (3) is the second end (7), which is connected to a push structure. The end face of the channel (2) is provided with a blind groove (8), which is connected to the enthalpy enhancement system and faces the end of the first end (6); When enthalpy enhancement is not activated, the pushing structure drives the check bar (3) to move toward the enthalpy enhancement channel. The through hole (9) is offset from the enthalpy enhancement hole (4) and the pump body (5), and the check bar (3) closes the enthalpy enhancement hole (4) and the pump body (5). When enthalpy enhancement is activated, the enthalpy enhancement pressure in the enthalpy enhancement system drives the check bar (3) to move toward the pushing structure. The through hole (9) is connected to the enthalpy enhancement hole (4) and the pump body (5) respectively. The surface of the stationary plate (1) is provided with an exhaust hole (18). When the check bar (3) passes below the exhaust hole (18), the check bar (3) is provided with an elongated hole (15) extending along its length direction. The elongated hole (15) corresponds to the exhaust hole (18).

2. The check valve structure with no enthalpy-increasing clearance volume according to claim 1, characterized in that: The pushing structure includes an exhaust channel (10) and an intake channel (11) opened in the stationary plate (1). The intake channel (11) and the exhaust channel (10) are respectively connected to the second end (7). The exhaust pressure of the exhaust channel (10) and the intake pressure of the intake channel (11) drive the check bar (3) to move toward the enthalpy-increasing channel.

3. The check valve structure with no enthalpy-increasing clearance volume according to claim 2, characterized in that: The end of the second end (7) is provided as a stepped convex surface (12), the stepped surface of the stepped convex surface (12) is connected to the air intake channel (11), and the vertical surface of the stepped convex surface (12) is connected to the exhaust channel (10).

4. The check valve structure with no enthalpy-increasing clearance volume according to claim 3, characterized in that: One end of the channel (2) is set as a stepped channel (13). The horizontal surface of the stepped convex surface (12) is embedded in the horizontal surface channel of the stepped channel (13) and has a port for connection with the exhaust channel (10). The vertical surface of the stepped convex surface (12) is matched with the vertical surface of the stepped channel (13) and has a port for connection with the intake channel (11).

5. The check valve structure with no enthalpy-increasing clearance volume according to claim 1, characterized in that: The pushing structure is a spring, one end of which is connected to the end face of the channel (2), and the other end abuts against the second end (7).

6. The check valve structure with no enthalpy-increasing clearance volume according to claim 1, characterized in that: The end of the first end (6) is set as an inclined surface (14), and the upper end of the inclined surface (14) is swung toward the second end (7).

7. The check valve structure with no enthalpy-increasing clearance volume according to claim 6, characterized in that: The blind groove (8) is located on the upper part of the end face of the channel (2), and the first end (6) can abut against the lower part of the end face of the channel (2).

8. The check valve structure with no enthalpy-increasing clearance volume according to claim 1, characterized in that: The first end (6) is sunk towards the side of the enthalpy-increasing orifice (4) to form a sunken surface (17), and a gas flow channel (16) is formed between the sunken surface (17) and the channel (2). The blind slot (8) is connected to the enthalpy-increasing system through the gas flow channel (16).

9. A scroll compressor, characterized in that: The check valve structure with no increasing enthalpy clearance volume as described in any one of claims 1-8.

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