Compressor exhaust structure, pump body assembly and compressor

Abstract

The invention provides a compressor exhaust structure, a pump body assembly and a compressor, and the compressor exhaust structure is provided with a compression cavity exhaust port; the compressor exhaust structure further comprises an exhaust valve plate and a driving mechanism. Wherein the driving mechanism is used for pushing the exhaust valve plate to move to a first position along the end face of the compression cavity exhaust port so as to open the compression cavity exhaust port; and the exhaust valve plate is pushed to move to a second position along the end face of the compression cavity exhaust port so as to close the compression cavity exhaust port. Compared with the prior art, the exhaust valve plate moves horizontally along the end face of the exhaust port of the compression cavity instead of moving up and down conventionally in the exhaust direction of the exhaust port of the compression cavity, so that the exhaust valve plate does not slap a limiter such as a limiting valve plate or the end face of the exhaust port of the compression cavity in the opening and closing process; in this way, the slapping noise generated in the opening and closing process of the exhaust valve plate can be reduced or even eradicated, and the hearing feeling of the compressor during operation is better.

Description

Technical Field

[0001] This invention belongs to the field of compressor technology, specifically relating to a compressor exhaust structure, a pump assembly, and a compressor. Background Technology

[0002] The compressor has a pump body assembly and a housing cavity. The pump body assembly is located within the housing cavity and has a compression chamber with a discharge port. The compressor discharges gas through this discharge port. To prevent the refrigerant and oil mixture in the housing cavity from flowing back into the compression chamber from the discharge port when the compressor stops, thus causing the compressor to reverse, a discharge valve is typically installed at the compressor's compression chamber discharge port. One end of the discharge valve is fixed, while the other end is flexible. When the gas in the compression chamber is fully compressed, the high-pressure compressed gas pushes the other end of the discharge valve to bend and deform, opening the compression chamber discharge port and completing the discharge. After the discharge is complete, the other end of the discharge valve returns to its closed position under its own elastic force.

[0003] The pump body assembly also includes a limiter, such as a limit valve plate, to limit the opening angle of the exhaust valve plate. The limit valve plate is located on the side of the exhaust valve plate opposite to the exhaust port of the compression chamber. When the other end of the exhaust valve plate opens to its limit position, it impacts the limit valve plate, generating a slapping noise. Similarly, when the exhaust valve plate returns to the position where the exhaust port of the compression chamber is closed, it also slaps the end face of the exhaust port, generating slapping noise. Therefore, reducing the slapping noise of the exhaust valve plate during opening and closing is a technical problem that needs to be solved by those skilled in the art. Summary of the Invention

[0004] Therefore, the present invention provides a compressor exhaust structure, a pump body assembly, and a compressor. The main technical problem to be solved is: how to reduce the knocking noise of the exhaust valve plate during the opening and closing process.

[0005] To address the aforementioned problems, the present invention provides a compressor exhaust structure having a compression chamber exhaust port; the compressor exhaust structure further includes an exhaust valve plate and a drive mechanism; wherein the drive mechanism is used to push the exhaust valve plate along the end face of the compression chamber exhaust port to a first position to open the compression chamber exhaust port; and to push the exhaust valve plate along the end face of the compression chamber exhaust port to a second position to close the compression chamber exhaust port.

[0006] In some embodiments, the drive mechanism includes a thrust structure and a reset structure; wherein,

[0007] The drive mechanism applies a force to the slider to move it to the second position through the reset structure, thereby pushing the exhaust valve plate to move to the second position along the end face of the exhaust port of the compression chamber;

[0008] When the pressure P1 inside the compression chamber is greater than or equal to a first preset value, the drive mechanism uses the pressure P1 inside the compression chamber through the thrust structure to overcome the resistance of the reset structure and push the exhaust valve plate to the first position along the end face of the exhaust port of the compression chamber.

[0009] In some embodiments, the thrust structure includes a limiting hole disposed on the compressor exhaust structure, and the exhaust valve plate is provided with a slider, the slider being disposed within the limiting hole and forming a first pressure chamber between the slider and a first end of the limiting hole; the limiting hole is used to limit the movement of the slider;

[0010] The first pressure chamber is connected to the inside of the compression chamber; when the pressure P1 inside the compression chamber is greater than or equal to a first preset value, the thrust structure introduces the pressure P1 inside the compression chamber through the first pressure chamber to overcome the resistance of the reset structure and push the exhaust valve plate to move along the end face of the exhaust port of the compression chamber to the first position.

[0011] In some embodiments, the compressor exhaust structure further includes an exhaust valve seat; the exhaust valve seat is disposed on the end face of the exhaust port of the compression chamber, and the limiting hole is formed between the two.

[0012] In some embodiments, the first pressure chamber is connected to the compression chamber via a connecting flow channel; wherein, the connecting flow channel includes a first flow channel section, a second flow channel section, and a third flow channel section connected in sequence; the first flow channel section is disposed on the component where the exhaust port of the compression chamber is located, the second flow channel section is disposed on the exhaust valve plate, and the third flow channel section is disposed on the exhaust valve seat; the connecting flow channel is connected to the compression chamber through one end of the first flow channel section opposite to the second flow channel section, and is connected to the first pressure chamber through one end of the third flow channel section opposite to the second flow channel section.

[0013] In some embodiments, the exhaust valve seat has a first surface abutting against the end face of the exhaust port of the compression chamber and a second surface adjacent to the first surface; the third flow channel section includes a first connecting hole disposed on the first surface and a second connecting hole disposed on the second surface; the second connecting hole extends from the second surface into the interior of the first pressure chamber, and the opening of the second connecting hole on the second surface is sealed by a first sealing member; the first connecting hole extends from the first surface into the interior of the second connecting hole.

[0014] The third flow channel segment is connected to the second flow channel segment through one end of the first connecting hole that is opposite to the second connecting hole, and is connected to the first pressure chamber through one end of the second connecting hole that is opposite to the second surface.

[0015] In some embodiments, a limiting through-hole groove is provided on the side of the exhaust valve seat opposite to the end face of the exhaust port of the compression chamber, and the exhaust valve plate is disposed between the end face of the exhaust port of the compression chamber and the bottom surface of the limiting through-hole groove, and the exhaust valve plate is slidably engaged with both the end face of the exhaust port of the compression chamber and the bottom surface of the limiting through-hole groove.

[0016] In some embodiments, the compressor exhaust structure is disposed within the compressor housing cavity, and the compressor housing exhaust port is located within the housing cavity when open to exhaust air through the housing cavity;

[0017] The reset structure is used to apply a force to the slider to move it to the second position using the pressure P2 inside the housing cavity.

[0018] In some embodiments, when the thrust structure includes a limiting hole disposed on the compressor exhaust structure, and the exhaust valve plate is provided with a slider, the slider being disposed within the limiting hole and forming a first pressure chamber between the slider and a first end of the limiting hole; the limiting hole is used to limit the movement of the slider; the first pressure chamber is in communication with the interior of the compression chamber; when the pressure P1 inside the compression chamber is greater than or equal to a first preset value, the thrust structure uses the pressure P1 inside the compression chamber to overcome the resistance of the reset structure and push the exhaust valve plate along the end face of the exhaust port of the compression chamber to the first position.

[0019] The limiting hole has a second end opposite to the first end, and a second pressure chamber is formed between the exhaust valve plate and the second end. The reset structure includes the second pressure chamber, which is used to communicate with the housing cavity. The reset structure introduces pressure P2 inside the housing cavity through the second pressure chamber to apply a force to the slider to move to the second position.

[0020] In some embodiments, when the compressor exhaust structure has an exhaust valve seat; the exhaust valve seat is disposed on the end face of the exhaust port of the compression chamber and the limiting hole is formed between the two, the exhaust valve seat is provided with a connecting hole that extends to the second pressure chamber, and one end of the connecting hole facing away from the second pressure chamber is used to be disposed in the housing cavity so that the pressure chamber communicates with the housing cavity through the connecting hole.

[0021] In some embodiments, the reset structure further includes an elastic element, through which the reset structure applies a force to the slider to move it toward the second position.

[0022] In some embodiments, when the thrust structure includes a limiting hole on the compressor exhaust structure, and the exhaust valve plate is provided with a slider, the slider being disposed within the limiting hole and forming a first pressure chamber between the slider and a first end of the limiting hole; the limiting hole is used to limit the movement of the slider; the first pressure chamber communicates with the interior of the compression chamber; and when the pressure P1 inside the compression chamber is greater than or equal to a first preset value, the thrust structure uses the pressure P1 inside the compression chamber through the first pressure chamber to overcome the resistance of the reset structure and push the exhaust valve plate along the end face of the exhaust port of the compression chamber to the first position, and the limiting hole has a second end opposite to the first end, and a second pressure chamber is formed between the exhaust valve plate and the second end, the second pressure chamber being used to communicate with the compressor housing cavity.

[0023] The elastic element is disposed within the second pressure chamber.

[0024] The present invention also provides a pump body assembly comprising the compressor exhaust structure described in any one of the above-described embodiments.

[0025] The present invention also provides a compressor comprising the compressor exhaust structure described in any one of the above-described embodiments; or comprising the pump assembly described above.

[0026] The compressor exhaust structure, pump assembly, and compressor provided by this invention have the following beneficial effects:

[0027] 1. Compared with the prior art, the present invention changes the movement of the exhaust valve plate from the conventional up and down movement along the exhaust direction of the compression chamber exhaust port to the horizontal movement along the end face of the compression chamber exhaust port. As a result, the exhaust valve plate will not strike the limiter such as the limit valve plate or the end face of the compression chamber exhaust port during the opening and closing process. This can reduce or even eliminate the striking noise of the exhaust valve plate during the opening and closing process, making the compressor operation more pleasant to listen to.

[0028] 2. This invention changes the conventional up-and-down movement of the exhaust valve plate along the exhaust port direction of the compression chamber to a horizontal movement along the end face of the exhaust port of the compression chamber. This makes the opening and closing process of the exhaust valve plate more stable, and the exhaust airflow will not continuously impact the exhaust valve plate. The state of the exhaust valve plate is more stable during exhaust. At the same time, the exhaust valve plate will not break due to impact, thus improving the service life of the exhaust valve plate. Attached Figure Description

[0029] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. The drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0030] Figure 1 This is a cross-sectional view of a compressor exhaust structure provided in an embodiment of the present invention when the exhaust valve plate closes the exhaust port of the compression chamber;

[0031] Figure 2 This is a cross-sectional view from another perspective of a compressor exhaust structure provided in an embodiment of the present invention when the exhaust valve plate closes the exhaust port of the compression chamber;

[0032] Figure 3 This is a cross-sectional view of a compressor exhaust structure provided in an embodiment of the present invention when the exhaust valve plate opens the exhaust port of the compression chamber;

[0033] Figure 4 This is a cross-sectional view from another perspective of a compressor exhaust structure provided in an embodiment of the present invention when the exhaust valve plate closes the exhaust port of the compression chamber;

[0034] Figure 5 This is a schematic diagram of the structure of an exhaust valve plate provided in one embodiment of the present invention;

[0035] Figure 6 This is a schematic diagram of a slider provided in an embodiment of the present invention;

[0036] Figure 7 This is a schematic diagram of the structure of an exhaust valve seat provided in an embodiment of the present invention.

[0037] The attached figures are labeled as follows:

[0038] 1. Exhaust valve seat; 2. Second sealing element; 3. Exhaust valve plate; 4. Connecting flow channel; 5. Static vortex plate; 6. Elastic element; 7. First sealing element; 8. Slider; 9. First pressure chamber; 10. Second pressure chamber; 11. Compression chamber; 12. Limiting hole; 13. Connecting hole; 14. Limiting through hole groove; 31. Insertion hole; 41. First flow channel section; 42. Second flow channel section; 43. Third flow channel section; 100. Compression chamber exhaust port; 101. End face of compression chamber exhaust port; 121. First end; 122. Second end; 141. Bottom surface of limiting through hole groove; 411. End of first flow channel section opposite to second flow channel section; 431. First connecting hole; 432. Second connecting hole; 1a. First surface. Detailed Implementation

[0039] The technical solutions of the embodiments 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, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. 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.

[0040] In the description of this invention, 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 generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention 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 invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0041] 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.

[0042] 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 should not be construed as limiting the scope of protection of this invention.

[0043] See also Figure 1-7As shown, according to an embodiment of the present invention, a compressor exhaust structure is provided, which has a compression chamber exhaust port 100, through which the compression chamber 11 of the compressor exhausts gas. The compressor exhaust structure also includes an exhaust valve plate 3 and a drive mechanism. The drive mechanism is used to push the exhaust valve plate 3 to move along the end face 101 of the compression chamber exhaust port to a first position to open the compression chamber exhaust port 100 (e.g., ...). Figure 3 (as shown); and the drive mechanism is also used to push the exhaust valve plate 3 to move along the end face 101 of the exhaust port of the compression chamber to the second position, so as to close the exhaust port 100 of the compression chamber (as shown). Figure 1 and Figure 2 (As shown).

[0044] Compared with the prior art, the present invention changes the movement of the exhaust valve plate 3 from the conventional up-and-down movement along the exhaust direction of the compression chamber exhaust port to the horizontal movement along the end face of the compression chamber exhaust port. As a result, the exhaust valve plate 3 will not strike the limiter, such as the limit valve plate or the end face 101 of the compression chamber exhaust port during the opening and closing process. This can reduce or even eliminate the striking noise of the exhaust valve plate 3 during the opening and closing process, making the compressor operation more pleasant to listen to.

[0045] Furthermore, in existing technologies, the exhaust airflow continuously impacts the exhaust valve plate, causing instability or damage. This invention, by changing the conventional up-and-down movement of the exhaust valve plate 3 along the exhaust direction of the compression chamber exhaust port to a horizontal movement along the end face of the compression chamber exhaust port, makes the opening and closing process of the exhaust valve plate 3 more stable. The exhaust airflow also prevents continuous impact on the exhaust valve plate 3, resulting in a more stable state of the exhaust valve plate 3 during exhaust. Simultaneously, the exhaust valve plate 3 is prevented from breaking due to impact, thus extending its service life.

[0046] To achieve the functions of the aforementioned drive mechanism in moving the exhaust valve plate 3 along the end face 101 of the compression chamber exhaust port to a first position to open the compression chamber exhaust port 100; and in moving the exhaust valve plate 3 along the end face 101 of the compression chamber exhaust port to a second position to close the compression chamber exhaust port 100, in some embodiments, such as Figure 1-3 As shown, the aforementioned drive mechanism may include a thrust structure and a reset structure. Specifically, the drive mechanism applies a force to the slider 8 via the reset structure, causing it to move towards a second position, thereby pushing the exhaust valve plate 3 along the end face 101 of the exhaust port of the compression chamber to the second position. Simultaneously, when the pressure P1 inside the compression chamber 11 is greater than or equal to a first preset value, the drive mechanism, through the thrust structure, utilizes the pressure P1 inside the compression chamber 11 to overcome the resistance of the reset structure and push the exhaust valve plate 3 along the end face 101 of the exhaust port of the compression chamber to the first position.

[0047] The aforementioned first preset value can be a preset point value or a preset range value. When the pressure P1 inside the compression chamber 11 is greater than or equal to the first preset value, it indicates that the compression of the refrigerant inside the compression chamber 11 has been completed, and at this time, the exhaust port 100 of the compression chamber needs to be opened for exhaust. In the example above, when the pressure P1 inside the compression chamber 11 is greater than or equal to the first preset value and exhaust is required, the thrust structure uses the pressure P1 inside the compression chamber 11 as a power source to overcome the resistance of the reset structure and push the exhaust valve plate 3 along the end face 101 of the exhaust port of the compression chamber to the aforementioned first position. This can save the cost of equipping an additional power source and has the advantage of reducing costs.

[0048] To achieve the aforementioned thrust structure function, in some implementations, such as Figure 2-3 As shown, the aforementioned thrust structure may include a limiting hole 12 disposed on the compressor exhaust structure, and a slider 8 disposed on the exhaust valve plate 3. The slider 8 is disposed within the limiting hole 12 and forms a first pressure chamber 9 between itself and the first end 121 of the limiting hole 12. The limiting hole 12 is used to limit the movement of the slider 8. The first pressure chamber 9 is in communication with the inside of the compression chamber 11. When the pressure P1 inside the compression chamber 11 is greater than or equal to a first preset value, the aforementioned thrust structure introduces the pressure P1 inside the compression chamber 11 through the first pressure chamber 9 to overcome the resistance of the reset structure and push the exhaust valve plate 3 to move along the end face 101 of the exhaust port of the compression chamber to the aforementioned first position.

[0049] The slider 8 is sealed to the inner wall of the limiting hole 12 to prevent gaps from appearing between the slider 8 and the inner wall of the limiting hole 12, which would cause air leakage in the first pressure chamber 9 and affect the stability of the air pressure in the first pressure chamber 9.

[0050] In the above example, since the first pressure chamber 9 is connected to the compression chamber 11, the pressure inside the first pressure chamber 9 is the same as the pressure inside the compression chamber 11. During operation, the pressure P1 inside the compression chamber 11 gradually increases. When the pressure P1 inside the compression chamber 11 is greater than or equal to a first preset value, the pressure P1 inside the compression chamber 11 can overcome the resistance of the reset structure and push the exhaust valve plate 3 along the end face 101 of the exhaust port of the compression chamber to the aforementioned first position, thus realizing the function of the aforementioned thrust structure.

[0051] In some embodiments, a first stop structure is provided within the aforementioned limiting hole 12. This first stop structure is used to stop and limit the slider 8 when the exhaust valve plate 3 moves to the aforementioned first position, thereby preventing the slider 8 from continuing to drive the exhaust valve plate 3 and avoiding excessive movement of the exhaust valve plate 3. Similarly, a second stop structure is also provided within the aforementioned limiting hole 12. This second stop structure is used to stop and limit the slider 8 when the exhaust valve plate 3 moves to the aforementioned second position, thereby preventing the slider 8 from continuing to drive the exhaust valve plate 3. The slider 8 is located between the aforementioned first and second stop structures.

[0052] In order to form the aforementioned limiting hole 12, in some embodiments, such as Figure 1-3 As shown, the aforementioned compressor exhaust structure includes an exhaust valve seat 1. The exhaust valve seat 1 is disposed on the end face 101 of the exhaust port of the compression chamber, and the aforementioned limiting hole 12 is formed between the two. The exhaust valve seat 1 has a first surface 1a opposite to the end face 101 of the exhaust port of the compression chamber, and the aforementioned limiting hole 12 can be a slot provided on the first surface 1a.

[0053] To achieve the aforementioned technical effect of internal communication between the first pressure chamber 9 and the compression chamber 11, in some embodiments, such as... Figure 1 As shown, the aforementioned first pressure chamber 9 can be connected to the compression chamber 11 via the connecting flow channel 4. Specifically, the connecting flow channel 4 may include a first flow channel section 41, a second flow channel section 42, and a third flow channel section 43 connected in sequence. The first flow channel section 41 is disposed on the component where the exhaust port 100 of the compression chamber is located, the second flow channel section 42 is disposed on the exhaust valve plate 3, and the third flow channel section 43 is disposed on the exhaust valve seat 1. The connecting flow channel 4 is connected to the compression chamber 11 through one end 411 of the first flow channel section opposite to the second flow channel section, and the connecting flow channel 4 is connected to the first pressure chamber 9 through one end 43 of the third flow channel section opposite to the second flow channel section 42.

[0054] The first flow channel section 41 and the second flow channel section 42 are connected by having their ports facing each other. Similarly, the second flow channel section 42 and the third flow channel section 43 are also connected by having their ports facing each other.

[0055] In some implementations, such as Figure 1 As shown, the end 411 of the first flow channel section opposite to the second flow channel section can be located on the side wall of the compression chamber exhaust port 100, so as to communicate with the compression chamber 11 through the compression chamber exhaust port 100.

[0056] In some embodiments, when the aforementioned compressor exhaust structure is applied to a scroll compressor, the component where the aforementioned compression chamber exhaust port 100 is located is the stationary scroll plate 5, that is, the aforementioned compression chamber exhaust port 100 and the first flow channel section 41 are both provided on the stationary scroll plate 5.

[0057] To facilitate the processing of the aforementioned third flow channel section 43, in some embodiments, such as Figure 1 and Figure 4 As shown, the aforementioned exhaust valve seat 1 has a first surface 1a abutting against the end face 101 of the exhaust port of the compression chamber and a second surface adjacent to the first surface 1a. The aforementioned third flow channel section 43 includes a first connecting hole 431 disposed on the first surface 1a and a second connecting hole 432 disposed on the second surface. The second connecting hole 432 extends from the second surface into the interior of the first pressure chamber 9, and the opening of the second connecting hole 432 on the second surface is sealed by a first sealing member 7. The first connecting hole 431 extends from the first surface 1a into the interior of the second connecting hole 432. The third flow channel section 43 communicates with the second flow channel section 42 through the end of the first connecting hole 431 facing away from the second connecting hole 432, and communicates with the first pressure chamber 9 through the end of the second connecting hole 432 facing away from the second surface.

[0058] In the above example, the second flow channel segment 42 is connected to the first pressure chamber 9 sequentially through the first connecting hole 431 and the second connecting hole 432. The first connecting hole 431 and the second connecting hole 432 can each be machined by drilling holes on their respective end faces. Then, a first sealing element 7, such as a bolt, is used to seal the opening of the second connecting hole 432 on its second face, thus completing the machining of the third flow channel segment 43. Compared to other machining methods, machining the third flow channel segment 43 by drilling is more convenient and faster.

[0059] In some implementations, such as Figure 2 and Figure 7 As shown, the aforementioned exhaust valve seat 1 may be provided with a limiting through hole groove 14 on the side opposite to the end face 101 of the exhaust port of the compression chamber. The aforementioned exhaust valve plate 3 is disposed between the end face 101 of the exhaust port of the compression chamber and the bottom surface of the limiting through hole groove 14, and the exhaust valve plate 3 is slidably engaged with both the end face 101 of the exhaust port of the compression chamber and the bottom surface of the limiting through hole groove 14.

[0060] In the above example, the bottom surface of the limiting through-hole groove 14 can stop and limit the exhaust valve plate 3, preventing the limiting valve plate from moving upward under the impact of exhaust.

[0061] To achieve the function of the aforementioned reset structure, in some embodiments, the aforementioned compressor exhaust structure is disposed within the compressor housing cavity. Furthermore, the compressor housing exhaust port 100 is located within the housing cavity when open, allowing exhaust through the housing cavity. The aforementioned reset structure is used to apply a force to the slider 8, causing it to move to a second position, using the pressure P2 inside the housing cavity.

[0062] In the example above, after the compression chamber 11 finishes venting, the moving scroll rotates, causing the volume of the compression chamber 11 to increase rapidly, thereby causing the pressure P1 inside the compression chamber 11 to decrease rapidly. At this time, the pressure P2 inside the shell cavity is still relatively large, making P2 greater than P1, which can push the slider 8 to move to the second position.

[0063] In particular, since the reset structure uses the pressure P2 inside the housing cavity as a power source to apply a force to the slider 8 to move to the second position, the cost of equipping an additional power source can be saved, which has the advantage of reducing costs.

[0064] It should be noted that the closer the end 411 of the first flow channel section away from the second flow channel section is to the inside of the compression chamber 11, the smaller the pressure P1 introduced into the inside of the compression chamber 11 by the first pressure chamber 9 will be when the moving scroll continues to rotate after the compression chamber 11 has finished exhausting. At this time, the pressure difference between P1 and P2 will be greater, which is more conducive to the reset structure using the pressure P2 inside the shell cavity to apply a force to the slider 8 to move to the second position.

[0065] To achieve the aforementioned effect of the reset structure applying a force to the slider 8 to move it to the second position using the pressure P2 inside the housing cavity, in some embodiments, such as... Figure 2-3 As shown, when the thrust structure includes a limiting hole 12 on the compressor exhaust structure, and the exhaust valve plate 3 is provided with a slider 8, the slider 8 is disposed in the limiting hole 12 and forms a first pressure chamber 9 between the slider 8 and the first end 121 of the limiting hole 12; the limiting hole 12 is used to limit the movement of the slider 8; the first pressure chamber 9 is in communication with the inside of the compression chamber 11; when the pressure P1 inside the compression chamber 11 is greater than or equal to a first preset value, the thrust structure uses the pressure P1 inside the compression chamber 11 through the first pressure chamber 9 to overcome the resistance of the reset structure and push the exhaust valve plate 3 to move along the end face 101 of the exhaust port of the compression chamber to the first position, the aforementioned limiting hole 12 also has a second end 122 opposite to the first end 121, and a second pressure chamber 10 is formed between the exhaust valve plate 3 and the second end 122. The aforementioned reset structure may include the second pressure chamber 10, the second pressure chamber 10 is used to communicate with the housing cavity, and the reset structure introduces the pressure P2 inside the housing cavity through the second pressure chamber 10 to apply a force to the slider 8 to move to the second position.

[0066] In the above example, since the second pressure chamber 10 is connected to the housing cavity, the pressure P2 inside the housing cavity can be introduced into the second pressure chamber 10 and exert a force on the slider 8 to move to the second position. When the compression chamber 11 completes the exhaust and the internal pressure P1 decreases to P1 less than P2, the pressure P2 inside the second pressure chamber 10 can overcome the pressure resistance P1 inside the first pressure chamber 9 and push the slider 8 to the aforementioned second position.

[0067] To achieve the effect of communication between the second pressure chamber 10 and the shell cavity, in some embodiments, such as Figure 2-3 As shown, when the compressor exhaust structure has an exhaust valve seat 1; the exhaust valve seat 1 is disposed on the end face 101 of the exhaust port of the compression chamber, and the aforementioned limiting hole 12 is formed between the two, the exhaust valve seat 1 may be provided with a connecting hole 13 that extends to the second pressure chamber 10. The end of the connecting hole 13 facing away from the second pressure chamber 10 is used to be disposed in the housing cavity, so that the pressure chamber is connected to the housing cavity through the connecting hole 13, thus achieving the effect of connecting the second pressure chamber 10 with the housing cavity.

[0068] To achieve the function of the aforementioned reset structure, in some embodiments, such as Figure 2-3 As shown, the aforementioned reset structure may also include an elastic element 6, and the reset structure also applies a force to the slider 8 to move to the second position through the elastic element 6.

[0069] In order to install the elastic element 6, in some embodiments, when the thrust structure includes a limiting hole 12 provided on the compressor exhaust structure, and the exhaust valve plate 3 is provided with a slider 8, the slider 8 is provided in the limiting hole 12 and forms a first pressure chamber 9 between the slider 8 and the first end 121 of the limiting hole 12; the limiting hole 12 is used to limit the movement of the slider 8; the first pressure chamber 9 is in communication with the inside of the compression chamber 11; when the pressure P1 inside the compression chamber 11 is greater than or equal to a first preset value, the thrust structure uses the pressure P1 inside the compression chamber 11 through the first pressure chamber 9 to overcome the resistance of the reset structure and push the exhaust valve plate 3 to move along the end face 101 of the exhaust port of the compression chamber to the first position, and the limiting hole 12 has a second end 122 opposite to the first end 121, and a second pressure chamber 10 is formed between the exhaust valve plate 3 and the second end 122, and the second pressure chamber 10 is used to communicate with the housing cavity of the compressor, the aforementioned elastic element 6 can be provided in the second pressure chamber 10 to make the overall structure more compact.

[0070] In some implementations, such as Figure 2-3 As shown, the second end 122 of the aforementioned limiting hole 12 can penetrate one side of the limiting valve seat, thus allowing the limiting hole 12 to be machined in the drilling direction. The second end 122 of the limiting hole 12 can be sealed by a second sealing member 2, such as a bolt. The elastic member 6 is located between the slider 8 and the second sealing member 2. The elastic member 6 can be a spring or flexible plastic, etc. One end of the elastic member 6 abuts against the slider 8, and the other end of the elastic member 6 abuts against the second sealing member 2.

[0071] In some embodiments, the aforementioned slider 8 can be mounted on the exhaust valve plate 3 by insertion. In a specific embodiment, the exhaust valve plate 3 may be provided with a insertion hole 31, and the slider 8 has an insertion part. The insertion part of the slider 8 is inserted into the insertion hole 31 and is interference-fitted with the insertion hole 31; thus, the installation and fixation of the slider 8 and the exhaust valve plate 3 are achieved.

[0072] In some embodiments, the present invention also provides a pump body assembly comprising the compressor exhaust structure of any of the above.

[0073] In some embodiments, the present invention also provides a compressor that may include the compressor exhaust structure described in any one of the above embodiments; or include the pump assembly described above.

[0074] The compressor mentioned above is a scroll compressor.

[0075] For ease of understanding, the overall structure of the present invention will be described below, and its working principle will be explained.

[0076] The following example illustrates the application of the aforementioned compressor exhaust structure to a scroll compressor.

[0077] The assembly process of the compressor exhaust structure of the present invention is as follows: First, the slider 8 and the exhaust valve plate 3 are assembled and fixed; then the combination of slider 8 and exhaust valve plate 3 is installed on the exhaust valve seat 1; then the elastic member 6 and the second sealing member 2 are installed on the exhaust valve seat 1, and the first sealing member 7 is assembled on the exhaust valve seat 1; then the entire exhaust valve seat 1 is installed on the stationary volute 5 by bolts.

[0078] The main function of the aforementioned exhaust valve plate 3 is to prevent the oil and gas in the housing cavity from flowing back into the compression chamber 11, causing the compressor to reverse. The exhaust valve plate 3 of the present invention mainly includes two working processes: opening the exhaust port 100 of the compression chamber and closing the exhaust port 100 of the compression chamber. The present invention mainly utilizes the pressure difference between the compression chamber 11 and the housing cavity to realize the movement of the exhaust valve plate 3, thereby enabling the exhaust valve plate 3 to complete the states of opening and closing the exhaust port 100 of the compression chamber.

[0079] (1) The process of the exhaust valve plate 3 opening the exhaust port 100 of the compression chamber is as follows: When the scroll compressor is running, the pressure P1 in the compression chamber 11 formed by the moving disc teeth and the stationary disc teeth gradually increases. At this time, the exhaust port 100 of the compression chamber is blocked by the exhaust valve plate 3, and the airflow in the compression chamber 11 will enter the first pressure chamber 9 along the connecting flow channel 4, so that the pressure in the first pressure chamber 9 is also P1. The second pressure chamber 10 is connected to the housing cavity, and the pressure is P2. When the pressure P1 in the first pressure chamber 9 is greater than the pressure P2 in the second pressure chamber 10, the pressure on both sides of the slider 8 is unequal. The pressure P1 in the first pressure chamber 9 overcomes the air pressure resistance of the elastic element 6 and the second pressure chamber 10, driving the exhaust valve plate 3 to move horizontally to the aforementioned first position to open the exhaust port 100 of the compression chamber.

[0080] (2) The process of the exhaust valve plate 3 closing the exhaust port 100 of the compression chamber is as follows: the pressure P1 in the compression chamber 11 formed by the moving plate teeth and the stationary plate teeth is less than the pressure P2 in the housing chamber. At this time, the gas pressure on both sides of the slider 8 is: the pressure of the first pressure chamber 9 is less than the pressure of the second pressure chamber 10. The pressure difference and the presence of the spring will push the slider 8 and the exhaust valve plate 3 to move to the aforementioned second position to close the exhaust port 100 of the compression chamber, thereby preventing the backflow of oil and gas in the housing chamber from causing the compressor to reverse.

[0081] In conventional exhaust valve plates, the opening and closing of the compression chamber exhaust port generates impact noise on the end face of the compression chamber exhaust port of the limiter, such as the limit valve plate or the stationary volute. The exhaust valve plate 3 of this invention changes its conventional up-and-down movement (along the exhaust direction of the compression chamber exhaust port) to a horizontal translational movement. This prevents impact noise by avoiding the impact on the end face 101 of the compression chamber exhaust port of the limiter, such as the limit valve plate or the stationary volute 5, during the opening and closing of the compression chamber exhaust port 100. Furthermore, after the exhaust valve plate 3 fully opens the compression chamber exhaust port 100, the airflow will not continuously impact the exhaust valve plate 3, making its state more stable and preventing damage due to impact. This improves the stability and service life of the exhaust valve plate 3.

[0082] It will be readily understood by those skilled in the art that, without conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0083] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention. The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the protection scope of the present invention.

Claims

1. A compressor exhaust structure, characterized in that: The compressor has a compression chamber exhaust port (100); the compressor exhaust structure further includes an exhaust valve plate (3) and a drive mechanism; wherein the drive mechanism is used to push the exhaust valve plate (3) along the end face (101) of the compression chamber exhaust port to a first position to open the compression chamber exhaust port (100); and to push the exhaust valve plate (3) along the end face (101) of the compression chamber exhaust port to a second position to close the compression chamber exhaust port (100).

2. The compressor exhaust structure according to claim 1, characterized in that: The driving mechanism includes a thrust structure and a reset structure; wherein... The drive mechanism applies a force to the slider (8) to move it to the second position through the reset structure, so as to push the exhaust valve plate (3) to move to the second position along the end face (101) of the exhaust port of the compression chamber; When the pressure P1 inside the compression chamber (11) is greater than or equal to the first preset value, the drive mechanism uses the pressure P1 inside the compression chamber (11) through the thrust structure to overcome the resistance of the reset structure and push the exhaust valve plate (3) to move along the end face (101) of the exhaust port of the compression chamber to the first position.

3. The compressor exhaust structure according to claim 2, characterized in that: The thrust structure includes a limiting hole (12) provided on the compressor exhaust structure, and a slider (8) is provided on the exhaust valve plate (3). The slider (8) is disposed in the limiting hole (12) and forms a first pressure chamber (9) between itself and the first end (121) of the limiting hole (12). The limiting hole (12) is used to limit the movement of the slider (8). The first pressure chamber (9) is connected to the inside of the compression chamber (11); when the pressure P1 inside the compression chamber (11) is greater than or equal to a first preset value, the thrust structure introduces the pressure P1 inside the compression chamber (11) through the first pressure chamber (9) to overcome the resistance of the reset structure and push the exhaust valve plate (3) to move along the end face (101) of the exhaust port of the compression chamber to the first position.

4. The compressor exhaust structure according to claim 3, characterized in that: The compressor exhaust structure also has an exhaust valve seat (1); the exhaust valve seat (1) is disposed on the end face (101) of the exhaust port of the compression chamber, and the limiting hole (12) is formed between the two.

5. The compressor exhaust structure according to claim 4, characterized in that: The first pressure chamber (9) is connected to the compression chamber (11) through a connecting flow channel (4); wherein, the connecting flow channel (4) includes a first flow channel section (41), a second flow channel section (42) and a third flow channel section (43) connected in sequence; the first flow channel section (41) is disposed on the component where the exhaust port (100) of the compression chamber is located, the second flow channel section (42) is disposed on the exhaust valve plate (3), and the third flow channel section (43) is disposed on the exhaust valve seat (1); the connecting flow channel (4) is connected to the compression chamber (11) through one end (411) of the first flow channel section away from the second flow channel section, and is connected to the first pressure chamber (9) through one end of the third flow channel section (43) away from the second flow channel section (42).

6. The compressor exhaust structure according to claim 5, characterized in that: The exhaust valve seat (1) has a first surface (1a) abutting against the end face (101) of the exhaust port of the compression chamber and a second surface adjacent to the first surface (1a). The third flow channel section (43) includes a first connecting hole (431) disposed on the first surface (1a) and a second connecting hole (432) disposed on the second surface. The second connecting hole (432) extends from the second surface into the interior of the first pressure chamber (9). The opening of the second connecting hole (432) on the second surface is sealed by a first sealing member (7). The first connecting hole (431) extends from the first surface (1a) into the interior of the second connecting hole (432). The third flow channel section (43) is connected to the second flow channel section (42) through one end of the first connecting hole (431) away from the second connecting hole (432), and is connected to the first pressure chamber (9) through one end of the second connecting hole (432) away from the second surface.

7. The compressor exhaust structure according to any one of claims 4-6, characterized in that: The exhaust valve seat (1) has a limiting through hole groove (14) on the side opposite to the end face (101) of the exhaust port of the compression chamber. The exhaust valve plate (3) is disposed between the end face (101) of the exhaust port of the compression chamber and the bottom surface of the limiting through hole groove (14). The exhaust valve plate (3) is in sliding fit with both the end face (101) of the exhaust port of the compression chamber and the bottom surface of the limiting through hole groove (14).

8. The compressor exhaust structure according to any one of claims 2-6, characterized in that: The compressor exhaust structure is disposed within the compressor housing cavity, and the compressor housing exhaust port (100) is located within the housing cavity when open, so as to exhaust through the housing cavity; The reset structure is used to apply a force to the slider (8) to move it to the second position using the pressure P2 inside the housing cavity.

9. The compressor exhaust structure according to claim 8, characterized in that: When the thrust structure includes a limiting hole (12) provided on the compressor exhaust structure, and the exhaust valve plate (3) is provided with a slider (8), the slider (8) is provided in the limiting hole (12) and forms a first pressure chamber (9) between the slider (8) and the first end (121) of the limiting hole (12); the limiting hole (12) is used to limit the movement of the slider (8); the first pressure chamber (9) is in communication with the inside of the compression chamber (11); when the pressure P1 inside the compression chamber (11) is greater than or equal to a first preset value, the thrust structure uses the pressure P1 inside the compression chamber (11) through the first pressure chamber (9) to overcome the resistance of the reset structure and push the exhaust valve plate (3) to move along the end face (101) of the exhaust port of the compression chamber to the first position. The limiting hole (12) has a second end (122) opposite to the first end (121). A second pressure chamber (10) is formed between the exhaust valve plate (3) and the second end (122). The reset structure includes the second pressure chamber (10). The second pressure chamber (10) is used to communicate with the housing cavity. The reset structure introduces the pressure P2 inside the housing cavity through the second pressure chamber (10) to apply a force to the slider (8) to move to the second position.

10. The compressor exhaust structure according to claim 9, characterized in that: When the compressor exhaust structure has an exhaust valve seat (1); the exhaust valve seat (1) is disposed on the end face (101) of the exhaust port of the compression chamber, and the limiting hole (12) is formed between the two, the exhaust valve seat (1) is provided with a connecting hole (13) that extends to the second pressure chamber (10), and one end of the connecting hole (13) facing away from the second pressure chamber (10) is used to be disposed in the housing cavity so that the pressure chamber communicates with the housing cavity through the connecting hole (13).

11. The compressor exhaust structure according to any one of claims 2-6 and 9-10, characterized in that: The reset structure also includes an elastic element (6), which applies a force to the slider (8) to move it to the second position through the elastic element (6).

12. The compressor exhaust structure according to claim 11, characterized in that: When the thrust structure includes a limiting hole (12) provided on the compressor exhaust structure, and the exhaust valve plate (3) is provided with a slider (8), the slider (8) is disposed in the limiting hole (12) and forms a first pressure chamber (9) between the slider (8) and the first end (121) of the limiting hole (12); the limiting hole (12) is used to limit the movement of the slider (8); the first pressure chamber (9) is in communication with the inside of the compression chamber (11); and the pressure P1 inside the compression chamber (11) is greater than or equal to the first pre-pressure chamber. When the value is set, the thrust structure uses the pressure P1 inside the compression chamber (11) through the first pressure chamber (9) to overcome the resistance of the reset structure and push the exhaust valve plate (3) to move along the end face (101) of the exhaust port of the compression chamber to the first position. The limiting hole (12) has a second end (122) opposite to the first end (121). A second pressure chamber (10) is formed between the exhaust valve plate (3) and the second end (122). When the second pressure chamber (10) is used to communicate with the housing cavity of the compressor, The elastic element (6) is disposed in the second pressure chamber (10).

13. A pump body assembly, characterized in that: The compressor exhaust structure includes any one of claims 1-12.

14. A compressor, characterized in that: It includes the compressor exhaust structure of any one of claims 1-12; or it includes the pump assembly of claim 13.

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