Static scroll plate structure and compressor

Abstract

The invention provides a static scroll plate structure and a compressor, the static scroll plate structure comprises a static scroll plate main body, the static scroll plate main body is provided with a first groove, an enthalpy increasing channel, a pressure relief channel, a first channel and a second channel, the enthalpy increasing channel, the pressure relief channel, the first channel and the second channel are communicated with the first groove, the first groove is communicated with an enthalpy increasing pipe of the compressor, and the second groove is communicated with a second enthalpy increasing pipe of the compressor. A movable part is arranged in the first groove, a communicating channel is formed in the movable part, when the movable part is located at the first position, the movable part seals the enthalpy increasing pipe and the first channel, and the pressure relief channel is communicated with the second channel through the communicating channel, and when the movable part is located at the second position, the enthalpy increasing channel is communicated with the enthalpy increasing pipe, and the movable part seals the second channel; according to the enthalpy-increasing compressor, the technical problem that in the enthalpy-increasing process of the compressor in the prior art, exhausted gas of the pressure relief part is directly exhausted out of the compressor, and resources are wasted can be solved.

Description

Technical Field

[0001] The invention belongs to the technical field of compressors, and in particular relates to a static scroll pressure structure and a compressor. Background Art

[0002] Scroll compressors are widely used in refrigeration, air conditioning, heat pumps and other fields due to their high efficiency, small size, light weight and stable operation. Generally speaking, a scroll compressor consists of a closed housing, a fixed scroll, a movable scroll, a bracket, a crankshaft, an anti-rotation mechanism oil supply device and a motor. The profiles of the movable and fixed scrolls are both spiral. The movable scroll is eccentric to the fixed scroll and installed 180° apart, so multiple crescent-shaped spaces are formed between the movable and fixed scrolls. When the movable scroll rotates with the center of the fixed scroll as the center and rotates at a certain rotation radius without self-rotation, the outer crescent-shaped space will continue to move toward the center. At this time, the refrigerant is gradually pushed to the center space, and its volume continues to shrink while the pressure continues to increase until it is connected to the central exhaust hole. The high-pressure refrigerant is discharged from the pump body to complete the compression process.

[0003] As scroll compressors gradually increase in speed, many reliability issues have arisen. Under high-frequency operation, the load on the bearings becomes worse, and bearing reliability becomes the key to high-speed design. During the enthalpy increase process, the exhaust temperature will decrease. The use of this low exhaust temperature can achieve the effect of reducing the bearing temperature, but the exhaust temperature of the non-enthalpy increase process is uncontrollable, and the exhaust channel cannot be directly led to the bearing.

[0004] Since in the prior art, during the enthalpy increase process of the compressor, the exhaust gas of the pressure relief part is directly discharged from the compressor, which causes technical problems such as waste of resources, the present invention studies and designs a static scroll structure and a compressor. Summary of the invention

[0005] Therefore, the present invention provides a static scroll structure and a compressor, which can solve the technical problem in the prior art that during the enthalpy increase process of the compressor, the exhaust gas of the pressure relief part is directly discharged from the compressor, resulting in a waste of resources.

[0006] In order to solve the above problems, the present invention provides a static scroll structure, including: a static scroll body, the static scroll body is provided with a first groove, an enthalpy increase channel, a pressure relief channel, the first channel and the second channel, the enthalpy increase channel, the pressure relief channel, the first channel and the second channel are connected with the first groove, the first groove is connected with the enthalpy increase pipe of the compressor, a movable part is provided in the first groove, the movable part is located between the enthalpy increase pipe and the enthalpy increase channel, a connecting channel is provided in the movable part, the connecting channel is connected with the pressure relief channel, the movable part has a first position and a second position in the first groove, when the movable part is located at the first position, the movable part closes the enthalpy increase pipe and the first channel, the pressure relief channel is connected with the second channel through the connecting channel, the second channel is used to discharge the medium in the pressure relief channel out of the compressor, when the movable part is located at the second position, the enthalpy increase channel is connected with the enthalpy increase pipe, the movable part closes the second channel, the pressure relief channel is connected with the first channel through the connecting channel, and the medium in the first channel is used for heat exchange.

[0007] In some embodiments, the movable part can move in the first groove along the axial direction of the static scroll body, one end of the first channel is opened on the side wall of the first groove, the other end of the first channel is opened on the outer peripheral wall of the static scroll body, and a first pressure relief valve assembly is provided at the other end of the first channel.

[0008] In some embodiments, the static scroll main structure includes a mounting seat, the enthalpy increasing tube is arranged on the mounting seat, the mounting seat at least partially extends into the first groove, and the first channel is located between the mounting seat and the bottom of the first groove.

[0009] In some embodiments, a third channel is provided on the mounting seat, both ends of the third channel are opened on the outer peripheral wall of the mounting seat, both ends of the second channel are opened on the side wall of the first groove, one end of the second channel is located between the mounting seat and the bottom of the first groove, and the other end of the second channel is connected to the third channel.

[0010] In some embodiments, one end of the third channel is opened on the portion of the mounting seat extending into the first groove, the other end of the third channel is opened on the portion of the mounting seat located outside the first groove, and a second pressure relief valve group is provided at the other end of the third channel.

[0011] In some embodiments, along the axial direction of the static scroll body, the third channel, the second channel, and the first channel are arranged in sequence.

[0012] In some embodiments, a fourth groove is provided on the outer peripheral wall of the mounting seat, the fourth groove extends along the circumference of the mounting seat, the fourth groove and the inner side wall of the first groove enclose a first chamber, and a seal is provided in the first chamber.

[0013] In some embodiments, a second groove is disposed at the bottom of the first groove, the enthalpy increasing channel is located at the bottom of the first groove, and the pressure relief channel is located at the bottom of the second groove.

[0014] In some embodiments, the movable member includes a first part and a second part, one end of the second part is connected to the first part, and the other end of the second part extends into the second groove, and the second part and the first part are arranged in an L shape.

[0015] In some embodiments, a fifth channel is provided in the first part, a fourth channel is provided in the second part, the fourth channel is connected to the pressure relief channel, one end of the fifth channel is connected to the fourth channel, the other end of the fifth channel is connected to the first channel, or the other end of the fifth channel is connected to the second channel.

[0016] In some embodiments, a plurality of through holes are provided on the first portion, and when the movable member is located at the first position, the mounting seat can close the through holes, and when the movable member is located at the second position, the enthalpy increasing channel is connected to the enthalpy increasing tube through the through holes.

[0017] In some embodiments, an elastic member is disposed between the first portion and the bottom of the first groove.

[0018] The present invention also provides a compressor, characterized in that it includes the stationary scroll structure according to any one of claims 1 to 12.

[0019] In some embodiments, the compressor includes a movable scroll, a bracket and a crankshaft, the movable scroll is meshed with the fixed scroll body, the bracket is connected to the fixed scroll body, and the crankshaft is mounted on the bracket through a bearing sleeve, the inner wall of the bracket is provided with a third groove, the third groove is arranged opposite to the bearing, and a second cavity is enclosed between the third groove and the bearing, and the medium in the first channel can flow into the second cavity.

[0020] In some embodiments, the third groove extends along the circumference of the bracket, and, along the axial direction of the bracket, the height of the third groove is smaller than the height of the bearing.

[0021] In some embodiments, a fifth groove is provided on the bracket, a cross slip ring is provided in the fifth groove, the bracket is connected to the movable scroll through the cross slip ring, an eighth channel is provided on the bracket, one end of the eighth channel is connected to the second cavity, and the other end of the eighth channel is connected to the fifth groove.

[0022] In some embodiments, a sixth channel is provided on the static vortex body, and a seventh channel is provided on the bracket. One end of the seventh channel is connected to the second cavity, and the other end of the seventh channel is connected to the sixth channel. The medium in the first channel can flow into the sixth channel.

[0023] In some embodiments, a cover is provided on the static scroll body, and a third cavity is formed between the cover and the static scroll body, and the outlet of the first channel and the inlet of the sixth channel are connected to the third cavity.

[0024] The present invention also provides a compressor, which includes the aforementioned stationary scroll structure.

[0025] The static scroll structure and compressor provided by the present invention have the following beneficial effects:

[0026] The movable part has a first position and a second position in the first groove. When the compressor does not perform air replenishment and enthalpy increase, the movable part is located at the first position, the movable part closes the enthalpy increase tube and the first channel, at this time the enthalpy increase channel is closed, the movable part can prevent the medium in the compression chamber from leaking out through the enthalpy increase channel, the pressure relief channel is connected to the second channel through the connecting channel, the second channel is used to discharge the medium in the pressure relief channel out of the compressor, when the compressor performs air replenishment and enthalpy increase, the exhaust temperature will decrease, the movable part is located at the second position, the enthalpy increase channel is connected to the enthalpy increase tube, the movable part closes the second channel, the pressure relief channel is connected to the first channel through the connecting channel, the first channel is used to transport the medium in the pressure relief channel to the compressor, so that the medium in the pressure relief channel exchanges heat with the components in the compressor, and the heating components inside the compressor are cooled down. Thereby, the utilization rate of the pressure relief gas is improved, the gas after pressure relief is utilized, and the waste of resources is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. The drawings described below are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0028] Figure 1 It is a structural schematic diagram of a compressor of the prior art;

[0029] Figure 2 It is a schematic diagram of the structure of a stationary scroll in a compressor in the prior art;

[0030] Figure 3 It is an assembly structure diagram of the static scroll structure of the present invention;

[0031] Figure 4 When the movable member in the static scroll structure of the present invention is in the second position Figure 3 The enlarged view of point A in the middle;

[0032] Figure 5 When the movable member of the static scroll structure of the present invention is in the first position Figure 3 The enlarged view of point A in the middle;

[0033] Figure 6 It is a structural schematic diagram of a stationary vortex in a stationary vortex structure of the present invention;

[0034] Figure 7 The structure of the movable part in the static scroll structure of the present invention is schematically shown. Figure 1 ;

[0035] Figure 8 The structure of the movable part in the static scroll structure of the present invention is schematically shown. Figure 2 ;

[0036] Fig. 9 It is a schematic diagram of the structure of the mounting seat in the static scroll structure of the present invention;

[0037] The accompanying drawings are marked as follows:

[0038] 1. Intake pipe; 2. Upper cover; 3. Static scroll body 3; 4. Moving scroll; 5. Cross slip ring; 6. Bracket; 7. Enthalpy increase pipe; 8. Exhaust pipe; 9. Enthalpy increase channel; 10. Pressure relief channel; 11. Exhaust hole; 12. First pressure relief valve assembly; 13. Cover; 14. Sixth channel; 15. Seventh channel; 16. Eighth channel; 17. Third groove; 18. Bearing; 19. Second pressure relief valve assembly; 20. First channel; 21. Second channel; 22. Elastic member; 23. First groove; 24. Movable member; 25. Third channel; 26. Mounting seat; 27. Intake hole; 28. Fourth channel; 29. ​​Through hole; 30. First part; 31. Second part; 32. Fifth groove; 33. Fifth channel; 34. Fourth groove; 35. Second groove. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0041] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0042] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0043] See also Figure 3-9As shown, according to an embodiment of the present invention, a static scroll structure is provided, comprising: a static scroll body 3, on which a first groove 23, an enthalpy increase channel 9, a pressure relief channel 10, the first channel 20 and the second channel 21 are provided, the enthalpy increase channel 9, the pressure relief channel 10, the first channel 20 and the second channel 21 are connected with the first groove 23, the first groove 23 is connected with the enthalpy increase pipe 7 of the compressor, a movable part 24 is provided in the first groove 23, the movable part 24 is located between the enthalpy increase pipe 7 and the enthalpy increase channel 9, a connecting channel is provided in the movable part 24, and the connecting channel is connected with the pressure relief channel 10, The movable member 24 has a first position and a second position in the first groove 23. When the movable member 24 is in the first position, the movable member 24 closes the enthalpy increasing tube 7 and the first channel 20, and the pressure relief channel 10 is connected to the second channel 21 through the connecting channel. The second channel 21 is used to discharge the medium in the pressure relief channel 10 out of the compressor. When the movable member 24 is in the second position, the enthalpy increasing channel 9 is connected to the enthalpy increasing tube 7, the movable member 24 closes the second channel 21, and the pressure relief channel 10 is connected to the first channel 20 through the connecting channel. The medium in the first channel 20 is used for heat exchange. The first channel 20 is used to transport the medium in the pressure relief channel 10 to the compressor so that the medium in the pressure relief channel 10 exchanges heat with the components in the compressor. In this technical solution, preferably, the enthalpy increasing tube 7 of the compressor is arranged at the opening of the first groove 23, and has a first position and a second position in the first groove 23 through the movable part 24. When the compressor does not perform air replenishment and enthalpy increase, the movable part 24 is located at the first position, and the movable part 24 closes the enthalpy increasing tube 7 and the first channel 20. At this time, the enthalpy increasing channel 9 is closed, and the movable part 24 can prevent the medium in the compression chamber from leaking out through the enthalpy increasing channel 9. The pressure relief channel 10 is connected to the second channel 21 through the connecting channel, and the second channel 21 is used to The medium in the pressure relief channel 10 is discharged out of the compressor. When the compressor performs air replenishment and enthalpy increase, the exhaust temperature will decrease. The movable part 24 is located at the second position. The enthalpy increase channel 9 is connected to the enthalpy increase pipe 7. The movable part 24 closes the second channel 21. The pressure relief channel 10 is connected to the first channel 20 through the connecting channel. The first channel 20 is used to transport the medium in the pressure relief channel 10 to the compressor, so that the medium in the pressure relief channel 10 exchanges heat with the components in the compressor and cools down the heating components inside the compressor. Thereby, the utilization rate of the pressure relief gas is improved, the gas after pressure relief is utilized, and the waste of resources is avoided.

[0044] See also Figure 3As shown, both ends of the pressure relief channel 10 are arranged along the axial direction of the static scroll body 3, and the middle of the pressure relief channel 10 is arranged radially on the static scroll body 3 until the pressure relief channel 10 is connected to the first groove 23, thereby relieving the pressure of the gas in the compression chamber, and the enthalpy increase channel 9 is arranged along the axial direction of the static scroll body 3, directly connecting the compression chamber and the first groove 23.

[0045] See also Figure 1 As shown, the scroll compressor is mainly composed of a motor stator, a motor rotor, an upper bracket 6, a lower bracket, a fixed scroll body 3, a movable scroll 4, a cross slip ring 5, a crankshaft, etc. The motor stator is fixed to the housing by a shrink sleeve, and the upper bracket 6 is fixed to the housing by eight-point welding. The movable scroll 4 and the fixed scroll body 3 are installed on the upper bracket 6 with a phase angle difference of 180 degrees. The movable scroll 4 moves under the drive of the crankshaft and meshes with the fixed scroll body 3 to form a series of crescent-shaped closed cavities that are isolated from each other and have continuously changing volumes. The fixed scroll body 3 is fixed to the upper bracket 6 by screw fasteners. The lower bracket is fixed to the lower support ring by screws, and the lower support ring is fixed to the housing by spot welding.

[0046] When the compressor is running, the motor stator drives the crankshaft to rotate, and the crank of the crankshaft drives the movable scroll 4 to move. Under the anti-rotation limit of the cross slip ring 5, the movable scroll 4 moves in translation around the center of the crankshaft at a fixed radius. The refrigerant entering from the suction pipe 1 is sucked into the crescent-shaped suction cavity formed by the movable scroll 4 and the static scroll body 3. After compression, it is discharged from the exhaust hole 11 of the static scroll body 3, enters the cavity between the upper cover 2 and the static scroll body 3, and then enters the cavity between the upper bracket 6 and the motor stator through the exhaust groove of the static scroll body 3 and the upper bracket 6. Part of it enters the lower end of the motor stator through the flow groove between the motor stator and the shell, and finally the high-pressure exhaust refrigerant is discharged from the compressor from the exhaust pipe 8. Conventional scroll compressors with enthalpy increase function complete the enthalpy increase and pressure relief functions through the enthalpy increase tube 7 and the pressure relief valve assembly respectively. The enthalpy increase channel 9 and the pressure relief channel 10 are both vertical through holes.

[0047] In some embodiments, the movable part 24 can move in the first groove 23 along the axial direction of the static scroll body 3, one end of the first channel 20 is opened on the side wall of the first groove 23, and the other end of the first channel 20 is opened on the outer peripheral wall of the static scroll body 3, and the other end of the first channel 20 is provided with a first pressure relief valve assembly 12.

[0048] In this technical solution, the enthalpy increasing tube 7 is connected to the first groove 23 through the opening of the first groove 23, and the movable part 24 can move in the first groove 23 along the axial direction of the static scroll body 3, thereby ensuring that the movable part can better close the enthalpy increasing channel 9. One end of the first channel 20 is opened on the side wall of the first groove 23, and the other end of the first channel 20 is opened on the outer peripheral wall of the static scroll body 3. The other end of the first channel 20 is provided with a first pressure relief valve assembly 12. When the movable part 24 is located in the second position, the first pressure relief valve assembly 12 is used to complete the pressure relief of the gas in the compression chamber.

[0049] In some embodiments, the static scroll structure includes a mounting seat 26, the enthalpy increasing tube 7 is arranged on the mounting seat 26, the mounting seat 26 at least partially extends into the first groove 23, and the first channel 20 is located between the mounting seat 26 and the bottom of the first groove 23. Fig. 9 As shown, a channel is provided in the mounting seat 26 for connecting the enthalpy increasing tube 7 and the first groove 23. The mounting seat 26 has an annular protrusion, and the mounting seat 26 at least partially extends into the first groove 23. The annular protrusion cooperates with the end face of the static scroll body 3, and the mounting seat 26 is fixed by screws or other means. The first channel 20 is located between the mounting seat 26 and the bottom of the first groove 23 to avoid the mounting seat 26 affecting the first channel 20.

[0050] In some embodiments, the mounting seat 26 is provided with a third channel 25, both ends of the third channel 25 are opened on the outer peripheral wall of the mounting seat 26, both ends of the second channel 21 are opened on the side wall of the first groove 23, one end of the second channel 21 is located between the mounting seat 26 and the groove bottom of the first groove 23, and the other end of the second channel 21 is connected to the third channel 25. In this technical solution, through the third channel 25, when the movable member 24 is located in the second position, the medium in the pressure relief passage 10 is discharged out of the fixed scroll body 3 through the second channel 21 and the third channel 25, and discharged out of the compressor through the exhaust pipe 8. Further, in combination with reference to Figure 4 As shown, the third channel 25 and the second channel 21 are U-shaped, and the opening directions of the third channel 25 and the second channel 21 are opposite.

[0051] In some embodiments, one end of the third channel 25 is opened on the portion of the mounting seat 26 extending into the first groove 23, the other end of the third channel 25 is opened on the portion of the mounting seat 26 located outside the first groove 23, and the other end of the third channel 25 is provided with a second pressure relief valve group 19. In this technical solution, one end of the third channel 25 is opened on the portion of the mounting seat 26 extending into the first groove 23, the other end of the third channel 25 is opened on the portion of the mounting seat 26 located outside the first groove 23, and the other end of the third channel 25 is provided with a second pressure relief valve group 19, so as to ensure that the medium in the pressure relief passage 10 is discharged out of the static scroll body 3, and the medium is relieved by the second pressure relief valve group 19, so as to ensure that the movable member 24 can achieve the pressure relief effect in the first position or the second position. It should be noted that the second pressure relief valve group 19 and the first pressure relief valve group 12 are both existing pressure relief structures.

[0052] In some embodiments, the third channel 25, the second channel 21, and the first channel 20 are arranged in sequence along the axial direction of the static scroll body 3. In this technical solution, the third channel 25, the second channel 21, and the first channel 20 are arranged in sequence along the axial direction of the static scroll body 3, ensuring that when the movable part moves along the axial direction of the static scroll body 3, it can connect to the first channel 20 and close the second channel 21, or close the first channel 20 and connect to the second channel 21, so as to ensure the normal operation of the pressure relief function.

[0053] In some embodiments, a fourth groove 34 is provided on the outer peripheral wall of the mounting seat 26, and the fourth groove 34 extends along the circumference of the mounting seat 26. The fourth groove 34 and the inner side wall of the first groove 23 enclose a first chamber, and a sealing member is provided in the first chamber. Figure 3 As shown, the mounting seat 26 and the first groove 23 are sealed by a sealing member to prevent gas leakage and affect the energy efficiency of the compressor.

[0054] In some embodiments, a second groove 35 is provided at the bottom of the first groove 23, the enthalpy increase channel 9 is located at the bottom of the first groove 23, and the pressure relief channel 10 is located at the bottom of the second groove 35. In this technical solution, the enthalpy increase channel 9 and the pressure relief channel 10 are separated by the second groove 35 to ensure that the enthalpy increase channel 9 and the pressure relief channel 10 do not affect each other.

[0055] In some embodiments, the movable member 24 includes a first portion 30 and a second portion 31, one end of the second portion 31 is connected to the first portion 30, and the other end of the second portion 31 extends into the second groove 35, and the second portion 31 and the first portion 30 are arranged in an L shape. Figure 7 and Figure 8 As shown, the other end of the second portion 31 extends into the second groove 35 to limit and guide the movable part 24. Preferably, the depth of the second groove 35 matches the running distance of the movable part 24, or the depth of the second groove 35 is greater than the running distance of the movable part 24, thereby ensuring the normal movement of the movable part 24.

[0056] In some embodiments, a fifth channel 33 is provided in the first portion 30, a fourth channel 28 is provided in the second portion 31, the fourth channel 28 is connected to the pressure relief channel 10, one end of the fifth channel 33 is connected to the fourth channel 28, the other end of the fifth channel 33 is connected to the first channel 20, or the other end of the fifth channel 33 is connected to the second channel 21. In this technical solution, the fifth channel 33 and the first channel 20 are arranged in an L shape, ensuring that the medium in the pressure relief channel 10 can flow into the first channel 20 or the second channel 21, thereby performing pressure relief.

[0057] In some embodiments, a plurality of through holes 29 are provided on the first portion 30. When the movable member 24 is located at the first position, the mounting seat 26 can close the through holes 29. When the movable member 24 is located at the second position, the enthalpy increasing channel 9 is connected to the enthalpy increasing tube 7 through the through holes 29. Figure 8 As shown, the through hole 29 passes through the first part 30 along the axial direction of the static scroll body 3. When the movable part 24 is located in the first position, the end of the mounting seat 26 can close the through hole 29. When the movable part 24 is located in the second position, the mounting seat 26 is separated from the movable part 24, and the enthalpy increase channel 9 is connected to the enthalpy increase tube 7 through the through hole 29.

[0058] In some embodiments, an elastic member 22 is disposed between the first portion 30 and the bottom of the first groove 23. In this technical solution, the elastic member 22 is a spring, and the elastic member 22 ensures the normal operation of the movable member 24 and the reset of the movable member 24.

[0059] The present invention also provides a compressor, comprising the above-mentioned stationary scroll structure.

[0060] In some embodiments, the compressor includes a movable scroll 4, a bracket 6 and a crankshaft, the movable scroll 4 is meshed with the fixed scroll body 3, the bracket 6 is connected to the fixed scroll body 3, and the crankshaft is sleeved on the bracket 6 through a bearing 18, and the inner wall of the bracket 6 is provided with a third groove 17, the third groove 17 is arranged opposite to the bearing 18, and the third groove 17 and the bearing 18 enclose a second cavity, and the medium in the first channel 20 can flow into the second cavity. In this technical solution, in combination with reference to Figure 3 As shown, the third groove 17 and the bearing 18 enclose a second cavity, and the medium in the first channel 20 can flow into the second cavity. That is, during the process of replenishing air and increasing enthalpy, the temperature of the pressure relief medium is reduced, so that the medium is transported to the second cavity through the first channel 20 to cool down and exchange heat for the bearing 18.

[0061] In some embodiments, the third groove 17 extends along the circumference of the bracket 6, and the height of the third groove 17 along the axial direction of the bracket 6 is less than the height of the bearing 18. In this technical solution, the third groove 17 extends along the circumference of the bracket 6, and can effectively perform all-round heat exchange on the bearing 18, increase the heat exchange area, and improve the heat exchange efficiency. Along the axial direction of the bracket 6, the height of the third groove 17 is less than the height of the bearing 18. Avoid leakage of the medium and affect the operation of the compressor.

[0062] In some embodiments, the bracket 6 is provided with a fifth groove 32, a cross ring 5 is provided in the fifth groove 32, the bracket 6 is connected to the movable scroll 4 through the cross ring 5, and the bracket 6 is provided with an eighth channel 16, one end of the eighth channel 16 is connected to the second cavity, and the other end of the eighth channel 16 is connected to the fifth groove 32. In this technical solution, the medium after heat exchange with the bearing 18 is transported to the fifth groove 32 to form a medium-pressure cavity, and the movable scroll 4 can also be supported to improve the utilization rate of the pressure relief medium.

[0063] In some embodiments, a sixth channel 14 is provided on the static vortex body 3, and a seventh channel 15 is provided on the bracket 6. One end of the seventh channel 15 is connected to the second cavity, and the other end of the seventh channel 15 is connected to the sixth channel 14. The medium in the first channel 20 can flow into the sixth channel 14. In some embodiments, a cover 13 is provided on the static vortex body 3. The cover 13 and the static vortex body 3 form a third cavity. The outlet of the first channel 20 and the inlet of the sixth channel 14 are connected to the third cavity. In this technical solution, in combination with reference to Figure 3As shown, the cover 13 and the static scroll body 3 enclose a third cavity, thereby ensuring that the medium in the first channel 20 can flow into the second cavity through the sixth channel 14 and the seventh channel 15 to perform heat exchange and cooling on the bearing 18 .

[0064] In the compressor of the present invention, the enthalpy increasing tube 7 is connected to the enthalpy increasing channel 9 through the mounting seat 26, and a group of pressure relief valve assemblies are respectively arranged on the sides of the mounting seat 26 and the static plate 3, and the pressure relief channel 20 is connected to the enthalpy increasing anti-reversal area through a horizontal channel. The enthalpy increasing anti-reversal function is formed by the movable part 24 and the spring. The movable part 24 has a horizontal fifth channel 33 and a fourth channel 28 inside to form a pressure relief channel. The gas in the compression chamber flows in from the fourth channel 28 and flows out from the fifth channel 33. When the enthalpy increasing function is used, the enthalpy increasing refrigerant presses the movable part 24 down, and the refrigerant flows to the enthalpy increasing channel 9 through the through hole 29. At this time, the fifth channel 33 of the movable part 24 is connected to the first channel 20. After the pressure relief gas enters the cover body 13 area, it flows through the sixth channel 14 and the seventh channel 15 of the upper bracket to the third groove 17 on the outer periphery of the upper bracket bearing 18. The third grooves 17 are not connected in the vertical direction to prevent gas leakage with the pressure relief chamber, thereby achieving a cooling effect, and then flow from the eighth channel 16 of the upper bracket 6 to the active area of ​​the cross slip ring 5 to form a medium-pressure chamber to support the movable scroll 4; when the enthalpy increase function is not used, the spring 22 pushes the movable part 24 to the bottom of the enthalpy increase pipe seat to seal the through hole 29, and the mounting seat 26 and the through hole 29 do not overlap at all. At this time, the fifth channel 33 of the reversing member is connected to the second channel 21, and the decompression gas is discharged into the compressor cavity after passing through the second channel 21 and the third channel 25.

[0065] It is easy for those skilled in the art to understand that, without conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0066] The above description is only 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 principle of the present invention shall be included in the protection scope of the present invention. The above description is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present invention. These improvements and variations should also be regarded as the protection scope of the present invention.

Claims

1. A static scroll structure, characterized in that: include: A stationary scroll body (3), wherein the stationary scroll body (3) is provided with a first groove (23), an enthalpy increasing channel (9), a pressure relief channel (10), the first channel (20) and a second channel (21); the enthalpy increasing channel (9), the pressure relief channel (10), the first channel (20) and the second channel (21) are connected to the first groove (23); the first groove (23) is connected to an enthalpy increasing pipe (7) of the compressor; a movable part (24) is provided in the first groove (23); the movable part (24) is located between the enthalpy increasing pipe (7) and the enthalpy increasing channel (9); a connecting channel is provided in the movable part (24); the connecting channel is connected to the pressure relief channel (10); the movable part (24) The first groove (23) has a first position and a second position. When the movable part (24) is located at the first position, the movable part (24) closes the enthalpy increasing tube (7) and the first channel (20), and the pressure relief channel (10) is connected to the second channel (21) through the connecting channel, and the second channel (21) is used to discharge the medium in the pressure relief channel (10) out of the compressor; when the movable part (24) is located at the second position, the enthalpy increasing channel (9) is connected to the enthalpy increasing tube (7), the movable part (24) closes the second channel (21), the pressure relief channel (10) is connected to the first channel (20) through the connecting channel, and the medium in the first channel (20) is used for heat exchange.

2. The static scroll structure according to claim 1, characterized in that: Along the axial direction of the static scroll body (3), the movable part (24) is capable of moving in the first groove (23), one end of the first channel (20) is opened on the side wall of the first groove (23), the other end of the first channel (20) is opened on the outer peripheral wall of the static scroll body (3), and the other end of the first channel (20) is provided with a first pressure relief valve assembly (12).

3. The static scroll structure according to claim 1, characterized in that: The static scroll main body structure comprises a mounting seat (26), the enthalpy increasing tube (7) is arranged on the mounting seat (26), the mounting seat (26) at least partially extends into the first groove (23), and the first channel (20) is located between the mounting seat (26) and the bottom of the first groove (23).

4. The static scroll structure according to claim 3, characterized in that: The mounting seat (26) is provided with a third channel (25), both ends of the third channel (25) are opened on the outer peripheral wall of the mounting seat (26), both ends of the second channel (21) are opened on the side wall of the first groove (23), one end of the second channel (21) is located between the mounting seat (26) and the groove bottom of the first groove (23), and the other end of the second channel (21) is connected to the third channel (25).

5. The static scroll structure according to claim 4, characterized in that: One end of the third channel (25) is opened on the portion of the mounting seat (26) extending into the first groove (23), and the other end of the third channel (25) is opened on the portion of the mounting seat (26) located outside the first groove (23), and the other end of the third channel (25) is provided with a second pressure relief valve group (19).

6. The static scroll structure according to claim 4, characterized in that: Along the axial direction of the static scroll body (3), the third channel (25), the second channel (21), and the first channel (20) are arranged in sequence.

7. The static scroll structure according to claim 3, characterized in that: A fourth groove (34) is provided on the outer peripheral wall of the mounting seat (26), and the fourth groove (34) extends along the circumference of the mounting seat (26). The fourth groove (34) and the inner side wall of the first groove (23) enclose a first chamber, and a sealing member is provided in the first chamber.

8. The static scroll structure according to claim 3, characterized in that: A second groove (35) is provided at the bottom of the first groove (23), the enthalpy increasing channel (9) is located at the bottom of the first groove (23), and the pressure relief channel (10) is located at the bottom of the second groove (35).

9. The static scroll structure according to claim 8, characterized in that: The movable part (24) comprises a first part (30) and a second part (31), one end of the second part (31) is connected to the first part (30), and the other end of the second part (31) extends into the second groove (35), and the second part (31) and the first part (30) are arranged in an L shape.

10. The static scroll structure according to claim 9, characterized in that: A fifth channel (33) is provided in the first part (30), a fourth channel (28) is provided in the second part (31), the fourth channel (28) is connected to the pressure relief channel (10), one end of the fifth channel (33) is connected to the fourth channel (28), the other end of the fifth channel (33) is connected to the first channel (20), or the other end of the fifth channel (33) is connected to the second channel (21).

11. The static scroll structure according to claim 9, characterized in that: A plurality of through holes (29) are provided on the first portion (30); when the movable member (24) is located at a first position, the mounting seat (26) can close the through holes (29); when the movable member (24) is located at a second position, the enthalpy increasing channel (9) is connected to the enthalpy increasing tube (7) through the through holes (29).

12. The static scroll structure according to claim 9, characterized in that: An elastic member (22) is provided between the first portion (30) and the bottom of the first groove (23).

13. A compressor, characterized in that: The invention comprises the stationary scroll structure according to any one of claims 1 to 12.

14. The compressor according to claim 13, characterized in that: The compressor comprises a movable scroll (4), a bracket (6) and a crankshaft, wherein the movable scroll (4) is meshed with the fixed scroll main body (3), the bracket (6) is connected with the fixed scroll main body (3), and the crankshaft is sleeved on the bracket (6) via a bearing (18), and a third groove (17) is provided on the inner wall of the bracket (6), the third groove (17) and the bearing (18) are arranged opposite to each other, and a second cavity is formed between the third groove (17) and the bearing (18), and the medium in the first channel (20) can flow into the second cavity.

15. The compressor according to claim 14, characterized in that: The third groove (17) extends along the circumference of the bracket (6), and, along the axial direction of the bracket (6), the height of the third groove (17) is smaller than the height of the bearing (18).

16. The compressor according to claim 14, characterized in that: The bracket (6) is provided with a fifth groove (32), a cross ring (5) is provided in the fifth groove (32), the bracket (6) is connected to the movable scroll (4) via the cross ring (5), the bracket (6) is provided with an eighth channel (16), one end of the eighth channel (16) is connected to the second cavity, and the other end of the eighth channel (16) is connected to the fifth groove (32).

17. The compressor according to claim 14, characterized in that: A sixth channel (14) is provided on the static scroll body (3), and a seventh channel (15) is provided on the bracket (6). One end of the seventh channel (15) is connected to the second cavity, and the other end of the seventh channel (15) is connected to the sixth channel (14). The medium in the first channel (20) can flow into the sixth channel (14).

18. The compressor according to claim 16, characterized in that: A cover body (13) is provided on the static scroll main body (3), and a third cavity is formed between the cover body (13) and the static scroll main body (3), and the outlet of the first channel (20) and the inlet of the sixth channel (14) are connected to the third cavity.

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