Compressor

Abstract

The invention provides a compressor which comprises a shell, a static scroll disc, a movable scroll disc and a movable assembly, an oil groove is formed in the end face of the end, facing the static scroll disc, of the static scroll disc, and an oil spraying hole corresponding to the oil groove is formed in the end face of the end, facing the static scroll disc, of the movable scroll disc; a sliding channel communicated with the oil groove is formed in the vortex static disc, the movable assembly comprises a sliding part, the sliding part is arranged in the sliding channel, a first cavity and a second cavity are formed in the shell, the first end of the sliding part is communicated with the first cavity, and the second end of the sliding part is communicated with the second cavity; in the gas compression process of the compressor, a pressure difference is formed between the pressure in the first cavity and the pressure in the second cavity, the pressure difference can drive the sliding part to slide towards the oil groove along the sliding channel, when the sliding part is located at the first position, the oil groove is at least partially cut off by the sliding part, and when the sliding part is located at the second position, the oil groove is at least partially cut off by the sliding part. The slider is located outside the oil groove. According to the compressor, the problem that the OCR is too high can be avoided.

Description

Technical Field

[0001] The present application relates to the field of gas compression equipment, and in particular to a compressor. Background Art

[0002] In related technologies, the Oil Circulation Rate (OCR) is a key factor affecting compressor performance. Controlling it within a reasonable range is a challenge in compressor development. Because the lubricating oil in a compressor is typically carried in the compressed gas to lubricate the compressor's internal components, the OCR value may vary depending on the compressor's operating state. For example, when the compression ratio is too high or the compressor is under heavy load, the OCR value of the compressor will also be higher, potentially leading to an excessively high OCR. Summary of the Invention

[0003] An embodiment of the present application provides a compressor to solve the problem of excessively high OCR of the compressor.

[0004] In order to solve the above technical problems, this application is implemented as follows:

[0005] In a first aspect, an embodiment of the present application provides a compressor, comprising a housing, a scroll stator, a scroll movable plate, and a movable assembly, wherein the scroll stator and the scroll movable plate are respectively arranged in the housing, and the scroll stator is cooperatively connected with the scroll movable plate, the scroll movable plate can rotate relative to the scroll stator, an end surface of the scroll stator facing one end of the scroll stator is provided with an oil groove, an end surface of the scroll movable plate facing one end of the scroll stator is provided with an oil injection hole corresponding to the oil groove, and during the process of the scroll movable plate rotating relative to the scroll stator, the oil injection hole can spray oil into the oil groove;

[0006] A sliding channel communicating with the oil groove is provided in the scroll stator, and the movable assembly includes a sliding member disposed in the sliding channel. A first cavity and a second cavity are formed in the housing, a first end of the sliding member is communicated with the first cavity, and a second end of the sliding member is communicated with the second cavity.

[0007] During the gas compression process of the compressor, a pressure difference is formed between the pressure in the first cavity and the pressure in the second cavity. The pressure difference between the first cavity and the second cavity can drive the sliding member to slide along the sliding channel toward the oil groove. When the sliding member is in the first position, the oil groove is at least partially intercepted by the sliding member. When the sliding member is in the second position, the sliding member is outside the oil groove.

[0008] In an embodiment of the present application, a movable component is added to the scroll stator, and during the process of gas compression by the compressor, the sliding member in the movable component can slide along the sliding channel toward the oil groove under the action of the pressure difference between the first cavity and the second cavity, and when the sliding member slides to the first position, at least part of the oil groove can be cut off. When the oil groove is cut off by the sliding member, the oil supply of the compressor will be reduced, and accordingly, the OCR of the compressor will also decrease. Therefore, during the process of gas compression by the compressor, the position of the sliding member can be controlled by the pressure difference between the first cavity and the second cavity to achieve the adjustment of the OCR, which is conducive to avoiding the problem of excessively high OCR. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0010] Figure 1 This is one of the partial schematic diagrams of the connection between the scroll stator and the movable assembly in the embodiment of the present application;

[0011] Figure 2 This is one of the cross-sectional views of the scroll stator in the embodiment of the present application;

[0012] Figure 3 This is a schematic diagram of the relative positions between the oil groove side of the scroll stator and the movable assembly in an embodiment of the present application;

[0013] Figure 4 is a cross-sectional view of a scroll disk in an embodiment of the present application;

[0014] Figure 5 yes Figure 4 A top view of

[0015] Figure 6 This is the second partial schematic diagram of the connection between the scroll stator and the movable assembly in the embodiment of the present application;

[0016] Figure 7 This is one of the schematic diagrams of the embodiment of the present application in which the fixed scroll wire teeth and the movable scroll wire teeth are in a meshing state;

[0017] Figure 8 Schematic diagram of the internal structure of the compressor in the embodiment of the present application;

[0018] Figure 9 This is a second schematic diagram of the fixed scroll teeth and the movable scroll teeth in the meshing state in the embodiment of the present application;

[0019] Figure 10 This is the second cross-sectional view of the scroll stator in the embodiment of the present application. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0021] See Figure 1-7 , an embodiment of the present application provides a compressor, which includes a housing 400, a scroll stator 100, a scroll movable plate 200 and a movable assembly 300, wherein the scroll stator 100 and the scroll movable plate 200 are respectively arranged in the housing 400, and the scroll stator 100 is cooperatively connected with the scroll movable plate 200, the scroll movable plate 200 can rotate relative to the scroll stator 100, and the end surface of the scroll stator 100 facing one end of the scroll stator 100 is provided with an oil groove 101, and the end surface of the scroll movable plate 200 facing one end of the scroll stator 100 is provided with an oil injection hole 201 corresponding to the oil groove 101, and during the rotation of the scroll movable plate 200 relative to the scroll stator 100, the oil injection hole 201 can spray oil into the oil groove 101;

[0022] The scroll stator 100 is provided with a sliding passage communicating with the oil groove 101, and the movable assembly 300 includes a sliding member 310 disposed in the sliding passage. A first cavity and a second cavity are formed in the housing 400. A first end of the sliding member 310 is communicated with the first cavity, and a second end of the sliding member 310 is communicated with the second cavity.

[0023] During the gas compression process of the compressor, a pressure difference is formed between the pressure in the first cavity and the pressure in the second cavity. The pressure difference between the first cavity and the second cavity can drive the sliding member 310 to slide along the sliding channel toward the oil groove 101. When the sliding member 310 is in the first position, the oil groove 101 is at least partially intercepted by the sliding member 310. When the sliding member 310 is in the second position, the sliding member 310 is outside the oil groove 101.

[0024] The fact that the scroll moving plate 200 can rotate relative to the stator scroll 100 may specifically mean that the scroll moving plate 200 can reciprocate relative to the stator scroll 100 within a certain angular range.

[0025] See Figure 8In some embodiments of the present application, the shell 400 may include an upper cover 401, a middle shell 402 and a lower cover 403 connected in sequence.

[0026] The above-mentioned compressor can be a scroll compressor, which can be specifically used as a compressor in an air-conditioning heat pump system. The principle of gas compression performed by the compressor can be the same as the compression principle of various compressors in air-conditioning heat pump systems in the related art. Accordingly, in the embodiment of the present application, the relevant structure of the compressor for gas compression can be the same as the gas compression structure inside various compressors in air-conditioning heat pump systems in the related art. For example, in some embodiments of the present application, the compressor can also include a crankshaft 600 and a rotary drive assembly 700, and the bottom of the shell 400 can be provided with an oil pool 407 for storing lubricating oil, and the shell 400 also includes an air inlet and an exhaust port, wherein the air inlet can be connected to the compression chamber 406 of the gas compressor of the compressor to provide low-pressure medium to the compression chamber 406, and the exhaust port can be connected to the pressure discharge chamber 404 of the compressor to discharge the high-pressure medium in the pressure discharge chamber 404. The first end of the crankshaft 600 can extend into the oil pool 407, and a bearing seat 204 can be provided at the end of the vortex moving plate 200 facing away from the vortex stator 100, and a neck shaft bearing 205 can be provided in the bearing seat 204. The second end of the crankshaft 600 can be connected to the neck shaft bearing 205, and the rotation drive assembly 700 can be installed in the housing 400, and the power output end of the rotation drive assembly 700 can be connected to the crankshaft 600 to drive the crankshaft 600 to rotate. While the crankshaft 600 rotates, the crankshaft 600 can drive the vortex moving plate 200 to rotate synchronously to achieve relative rotation between the vortex moving plate 200 and the vortex stator 100, thereby realizing the gas compression function of the compressor. A first oil guide channel may be opened inside the crankshaft 600, and the first oil guide channel may extend from the first end of the crankshaft 600 to the second end of the crankshaft 600. A second oil guide channel may be opened inside the vortex movable plate 200, and the second oil guide channel may connect the internal space of the bearing seat 204 with the oil injection hole 201. The first oil guide channel may connect with the second oil guide channel through the internal space of the bearing seat 204.

[0027] The rotary drive assembly 700 may be any drive assembly capable of outputting rotary motion, such as a conventional motor or an electromagnetic rotary motor. The oil groove 101 may be connected to the compression chamber 406 via the gap between the scroll moving plate 200 and the scroll stator 100. Thus, as the rotary drive assembly 700 drives the scroll moving plate 200 to rotate relative to the scroll stator 100 via the crankshaft 600 and the neck shaft bearing 205, a suction force may be generated on the lubricating oil in the oil pool 407. Thus, the lubricating oil may sequentially pass through the first oil guide channel, the interior space of the bearing seat 204, the second oil guide channel, and the oil injection port to reach the oil groove 101 of the scroll stator 100. Thereafter, the lubricating oil may enter the compression chamber 406 through the gap between the scroll moving plate 200 and the scroll stator 100, thereby lubricating the relative motion between the scroll moving plate 200 and the scroll stator 100. Among them, the lubricating oil entering the compression chamber 406 can flow synchronously with the compressed medium. After entering the pressure discharge chamber 404, it can flow back to the oil pool 407 through the oil return port in the pressure discharge chamber 404. The oil return port can be connected to the oil pool 407 through the oil return channel.

[0028] See Figure 3 In some embodiments of the present application, an oil inlet 104 connected to the oil groove 101 can be further opened at one end of the vortex stator 100 facing the vortex movable plate 200. During the rotation of the vortex movable plate 200, the vortex movable plate 200 can rotate to a position where the oil injection hole 201 is aligned with the oil inlet 104. When the oil injection hole 201 is aligned with the oil inlet 104, the lubricating oil sprayed from the oil injection hole 201 can enter the oil groove 101 through the oil inlet 104.

[0029] In some embodiments of the present application, during the gas compression process of the compressor, the pressure in the first cavity is greater than the pressure in the second cavity, and the pressure difference between the first cavity and the second cavity is positively correlated with the compression ratio of the compressor; when the pressure difference between the first cavity and the second cavity is greater than a preset threshold, under the action of the pressure difference between the first cavity and the second cavity, the sliding member 310 is located in the first position; when the pressure difference between the first cavity and the second cavity is less than or equal to the preset threshold, the sliding member 310 is located in the second position.

[0030] The positive correlation between the pressure difference between the first cavity and the second cavity and the compression ratio of the compressor may mean that: as the compression ratio of the compressor increases, the gas pressure in the first cavity increases, and the gas pressure in the second cavity remains unchanged. Alternatively, the positive correlation between the pressure difference between the first cavity and the second cavity and the compression ratio of the compressor may also mean that: as the compression ratio of the compressor increases, the gas pressure in the first cavity increases, and the gas pressure in the second cavity also increases, wherein the increase in the gas pressure in the first cavity is greater than the increase in the gas pressure in the second cavity, and the compression ratio is the ratio of the exhaust pressure to the intake pressure of the compressor.

[0031] The above-mentioned compressor may further include a reset assembly for driving the sliding member 310 to reset from the first position to the second position. The reset assembly may provide the sliding member 310 with a reset force in the direction opposite to the oil groove 101. As the compression ratio of the compressor increases, the pressure difference between the first cavity and the second cavity also increases. Correspondingly, the thrust of the pressure difference on the sliding member 310 will also increase. Therefore, the preset threshold value and the magnitude of the reset force may be predetermined to ensure that when the pressure difference is greater than the preset threshold value, the thrust of the pressure difference on the sliding member 310 can overcome the reset force and drive the sliding member 310 to slide toward the side of the oil groove 101, so as to at least partially cut off the oil groove 101. At the same time, when the compression ratio of the compressor is greater, the OCR of the compressor is also greater. Therefore, in the embodiment of the present application, when the OCR of the compressor is greater than a certain threshold, the pressure difference between the first cavity and the second cavity is greater than the above-mentioned preset threshold. At this time, the sliding member 310 can, under the action of the pressure difference, at least partially cut off the oil groove 101, thereby reducing the oil supply to the oil groove 101. Accordingly, the OCR of the compressor will also decrease to avoid the OCR of the compressor being too high. Accordingly, when the compression ratio of the OCR is smaller, the thrust of the pressure difference on the sliding member 310 can be less than the reset force. At this time, under the action of the reset force, the sliding member 310 is in the second position, and the sliding member 310 does not cut off the oil groove 101, which is conducive to achieving normal oil supply.

[0032] The reset assembly may be any reset assembly capable of providing the sliding member 310 with a reset force on the side facing away from the oil tank 101. For example, the reset assembly may include a compression spring located between the oil tank 101 and the sliding member 310, with one end thereof abutting against the sliding member 310. Alternatively, the reset assembly may also include a tension spring located on the side of the sliding member 310 facing away from the oil tank 101, with one end thereof connected to the sliding member 310. In some embodiments of the present application, the reset assembly may include Figure 1 The first elastic member 320 in the illustrated embodiment.

[0033] The above-mentioned first cavity and second cavity can be two independent cavities in the compressor, and during the gas compression process of the compressor, the gas pressure between the first cavity and the second cavity is different. For example, in some embodiments of the present application, the end face of the vortex stator 100 facing away from the vortex movable plate 200 and the inner wall of the shell 400 are enclosed to form a pressure relief cavity 404. The first cavity is the pressure relief cavity 404, and the second cavity is the cavity formed by the internal space of the oil tank 101, that is, the oil tank 101 forms the first cavity.

[0034] In other embodiments of this application, see Figure 8 The compressor further includes a frame 500, which is located on the side of the scroll plate 200 facing away from the scroll plate 100. The frame 500 includes an annular connecting portion 501 arranged around the disk surface 202 of the scroll plate 200. The scroll plate 100 is fixedly connected to the annular connecting portion 501. The outer wall of the scroll plate 200 and the annular connecting portion 501 enclose a back pressure chamber 405; wherein, the second cavity is in communication with the back pressure chamber 405, or, when the scroll plate 200 rotates to a preset position, the second cavity is in communication with the back pressure chamber 405. See Figure 9 The scroll stator 100 may further be provided with a first connecting groove 109 communicating with the oil groove 101, wherein the oil groove 101 can maintain communication with the back pressure chamber 405 via the first connecting groove 109. Alternatively, a second connecting groove may be provided on the surface of the disk surface 202 of the scroll moving plate 200 facing one end of the scroll stator 100. When the scroll moving plate 200 rotates to a preset position, the oil groove 101 can maintain communication with the back pressure chamber 405 via the first connecting groove 109. When the scroll moving plate 200 rotates to a position other than the preset position, the oil groove 101 is disconnected from the back pressure chamber 405, thereby achieving intermittent communication.

[0035] See further Figure 8 The frame 500 further includes a frame plate 502 disposed inside the frame 500 , and the frame plate 502 abuts against the end surface of the scroll moving plate 200 facing away from the scroll stator 100 to achieve a relatively fixed position of the scroll moving plate 200 .

[0036] It can be understood that, when the oil tank 101 is connected to the back pressure chamber 405, the first cavity may include the internal space of the oil tank 101 and the back pressure chamber 405; when the oil tank 101 is not connected to the back pressure chamber 405, the first cavity only includes the internal space of the oil tank 101.

[0037] In other embodiments of the present application, the end face of the scroll stator 100 facing away from the scroll movable plate 200 and the inner wall of the shell 400 form a pressure discharge chamber 404, and the scroll movable plate 200 and the scroll stator 100 form a compression chamber 406. Since the gas pressure in the pressure discharge chamber 404 is higher than the gas pressure in the compression chamber 406 during the gas compression process of the compressor, the pressure discharge chamber 404 can be used as the above-mentioned first chamber, and the compression chamber 406 can be used as the second chamber.

[0038] See Figure 8 In some embodiments of the present application, the pressure relief chamber 404 includes, in addition to the cavity formed between the end surface of the scroll stator 100 facing away from the scroll movable plate 200 and the inner wall of the upper cover 401 of the shell 400, the cavity enclosed by the outer wall of the frame 500 and the empty shell. At the same time, the pressure relief chamber 404 may also include a partial space located in the lower cover 403, wherein the pressure relief chambers 404 at various positions may be connected to each other.

[0039] See Figure 2-3 The scroll stator 100 may include: a fixed scroll line tooth 106 protruding upward from the disk surface 105 of the scroll stator 100; the scroll orbiting plate 200 may include: a movable scroll line tooth 203 protruding upward from the disk surface 202 of the scroll orbiting plate 200; see Figure 2-5 The mating connection between the stator scroll 100 and the orbiting scroll 200 may specifically mean that the fixed scroll teeth 106 of the stator scroll 100 and the orbiting scroll teeth 203 of the orbiting scroll 200 engage with each other. The projection of the fixed scroll teeth 106 onto the disk surface 105 of the stator scroll 100 is an involute of a circle. Correspondingly, the projection of the orbiting scroll teeth 203 onto the disk surface 202 of the orbiting scroll 200 is also an involute of a circle.

[0040] See Figure 3 In some embodiments of the present application, the oil groove 101 may be arc-shaped, and the oil groove 101 may be arranged on the outer side of the static scroll tooth 106 .

[0041] The oil groove 101 being at least partially cut off by the sliding member 310 may mean that the sliding member 310 completely cuts off the oil groove 101. In this case, the sliding member 310 is inserted into the oil groove 101 and extends from the bottom of the oil groove 101 to the notch of the oil groove 101. For example, see Figure 3, the sliding member 310 can separate the oil groove 101 into a first sub-oil groove 1011 and a second sub-oil groove 1012, and the first sub-oil groove 1011 and the second sub-oil groove 1012 are not connected to each other. In this way, since the lubricating oil entering the first sub-oil groove 1011 from the oil inlet 104 cannot break through the sliding member 310 and flow into the second sub-oil groove 1012, the oil groove 101 can only be supplied with oil through the first sub-oil groove 1011, thereby reducing the oil supply of the oil groove 101. Accordingly, the oil groove 101 is at least partially cut off by the sliding member 310, which can also mean that the sliding member 310 partially cuts off the oil groove 101. At this time, the sliding member 310 is inserted into the oil groove 101 from the bottom of the oil groove 101, but there is a certain gap between the sliding member 310 and the groove opening of the oil groove 101, that is, Figure 3 In the described embodiment, the first sub-oil groove 1011 and the second sub-oil groove 1012 can be connected through the gap between the sliding member 310 and the groove opening of the oil groove 101, but due to the obstruction of the sliding member 310, the connection area between the first sub-oil groove 1011 and the second sub-oil groove 1012 is reduced, thereby reducing the amount of lubricating oil entering the second sub-oil groove 1012 from the first sub-oil groove 1011. In this way, the oil supply of the oil groove 101 can also be reduced to a certain extent.

[0042] It is understandable that, since the first position can be the position where the sliding member 310 partially cuts off the oil groove 101 or the position where the sliding member 310 completely cuts off the oil groove 101, the first position can be any position where the sliding member 310 is inserted into the oil groove 101. Accordingly, the second position can be any other position after the sliding member 310 is withdrawn from the oil groove 101. The cut-off position where the sliding member 310 cuts off the oil groove 101 can be any other position in the longitudinal direction of the oil groove 101 except the two end points. Figure 3 This is just an example of this application and can also be found in Figure 3 Locations other than those shown.

[0043] In this embodiment, by adding a movable component 300 in the scroll stator 100, during the process of gas compression by the compressor, the sliding component 310 in the movable component 300 can slide along the sliding channel toward the oil groove 101 under the action of the pressure difference between the first cavity and the second cavity, and when the sliding component 310 slides to the first position, at least part of the oil groove 101 can be cut off. When the oil groove 101 is cut off by the sliding component 310, the oil supply of the compressor will be reduced, and accordingly, the OCR of the compressor will also decrease. Therefore, during the process of gas compression by the compressor, the position of the sliding component 310 can be controlled by the pressure difference between the first cavity and the second cavity to achieve the adjustment of the OCR, which is beneficial to avoid the problem of excessive OCR.

[0044] Optionally, the movable assembly 300 further includes a first elastic member 320, and the sliding member 310 includes a first segment 311 and a second segment 312, wherein the first segment 311 and the second segment 312 are respectively cylindrical, and the cross-sectional area of the first segment 311 is larger than the cross-sectional area of the second segment 312; the sliding channel includes a first sub-channel 107 and a second sub-channel 108, wherein the second sub-channel 108 is located between the first sub-channel 107 and the oil groove 101, and the cross-sectional area of the first sub-channel 107 matches the cross-sectional area of the first segment 311, and the cross-sectional area of the second sub-channel 108 matches the cross-sectional area of the second segment 312;

[0045] The first segment 311 is located in the first sub-channel 107, and the side wall of the first segment 311 is in contact with the inner wall of the first sub-channel 107. At least a portion of the second segment 312 is located in the second sub-channel 108, and the side wall of the second segment 312 is in contact with the inner wall of the second sub-channel 108. The sliding channel includes a first step surface 103 formed at the connection between the first sub-channel 107 and the second sub-channel 108. The side wall of the sliding member 310 includes a second step surface 313 formed at the connection between the first segment 311 and the second segment 312. The first step surface 103 and the second step surface 313 are opposite to each other. The first end of the first elastic member 320 is connected to the first step surface 103, and the second end of the first elastic member 320 is connected to the second step surface 313. The first elastic member 320 is in an elastically compressed state.

[0046] When the pressure difference between the first cavity and the second cavity is less than or equal to the preset threshold, under the action of the first elastic member 320 , the sliding member 310 is located at the second position.

[0047] The first elastic member 320 may be a spring, and the first elastic member 320 may be sleeved on the second segment 312. The first segment 311 and the second segment 312 may be cylindrical or polygonal, etc., respectively. In addition, the cross-sectional shape of the first sub-channel 107 may be the same as the cross-sectional shape of the first segment 311. The cross-sectional shape of the second sub-channel 108 may be the same as the cross-sectional shape of the second segment 312. The following takes the first segment 311 and the second segment 312 as an example to further explain the structure of the sliding member 310. Please refer to Figure 1 The first segment 311 and the second segment 312 can be integrally formed, and the first segment 311 and the second segment 312 are coaxially arranged.

[0048] The cross-sectional area of the first sub-channel 107 matches the cross-sectional area of the first segment 311, which may specifically mean that the cross-sectional area of the first sub-channel 107 is the same as that of the first segment 311, or the cross-sectional area of the first sub-channel 107 is slightly larger than that of the first segment 311, in which case the first segment 311 can be loosely fitted with the first sub-channel 107, or the outer sidewall of the first segment 311 is in contact with the inner sidewall of the first sub-channel 107. Correspondingly, the cross-sectional area of the second sub-channel 108 matches the cross-sectional area of the second segment 312, which may specifically mean that the cross-sectional area of the second sub-channel 108 is the same as that of the second segment 312, or the cross-sectional area of the second sub-channel 108 is slightly larger than that of the second segment 312, in which case the second segment 312 can be loosely fitted with the second sub-channel 108, or the outer sidewall of the second segment 312 is in contact with the inner sidewall of the second sub-channel 108.

[0049] See Figure 1 The first end of the first elastic member 320 abuts against the first step surface 103 , and the second end of the first elastic member 320 abuts against the second step surface 313 .

[0050] It is understood that, as the sliding member 310 slides along the sliding channel, the first elastic member 320 is always in an elastically compressed state, and as the sliding member 310 slides toward the oil groove 101, the compression of the first elastic member 320 continues to increase. Because the pressure difference between the first cavity and the second cavity is positively correlated with the compression ratio of the compressor, the thrust exerted by the pressure difference on the sliding member 310 is also positively correlated with the compression ratio of the compressor. That is, the greater the compression ratio of the compressor, the greater the thrust exerted by the pressure difference on the sliding member 310. Correspondingly, the distance that the sliding member 310 can be pushed to slide toward the oil groove 101 is also greater, the sliding member 310 extends further into the oil groove 101, and the oil supply to the oil groove 101 is reduced. Therefore, in the embodiment of the present application, the cut-off depth of the oil groove 101 by the sliding member 310 can be dynamically adjusted according to the compression ratio, that is, the greater the compression ratio and the higher the OCR, the deeper the cut-off depth of the oil groove 101 by the sliding member 310 is, and the smaller the effect of reducing the OCR is. This makes it possible to dynamically adjust the OCR according to the compression ratio so that the OCR is always within a certain range.

[0051] In this embodiment, a first elastic member 320 in an elastically compressed state is provided between the first step surface 103 and the second step surface 313. In this way, the first elastic member 320 can provide a driving force for the sliding member 310 toward the oil groove 101. In this way, it can be ensured that the sliding member 310 will only cut off the oil groove 101 to reduce the OCR when the OCR of the compressor is high, and the OCR can be dynamically adjusted according to the compression ratio so that the OCR is always within a certain range.

[0052] Optionally, the movable assembly 300 further includes an end cover 350 and a first annular seal 330 . The end cover 350 is fixedly connected to a port at an end of the sliding channel away from the oil groove 101 , and the end cover 350 defines a communication channel 351 for connecting the first end of the sliding member 310 with the first cavity.

[0053] The end surface of the sliding member 310 facing the end cover 350 is provided with a first annular groove matching the first annular seal 330, the first end of the first annular seal 330 is embedded in the first annular groove, the second end of the first annular seal 330 extends out of the first annular groove, and the second end of the first annular seal 330 is in contact with the end surface of the end cover 350 facing the end of the sliding member 310, and the end surface of the connecting channel 351 facing the end of the sliding member 310 is located inside the first annular seal 330.

[0054] The first annular seal 330 can be in contact with the inner sidewall of the first annular groove to enhance the sealing effect of the first annular seal 330. It is understood that the second end of the first annular seal 330 can always abut against the end surface of the end cap 350 facing the end of the sliding member 310. As the sliding member 310 slides along the sliding groove, the first annular seal 330 can slide within the first annular shape. The first annular seal 330 can be made of various materials, for example, various rubber materials.

[0055] In this embodiment, by providing the first annular seal 330 , relative isolation between the first cavity and the second cavity can be achieved, ensuring that a sufficiently large pressure difference can be generated between the first cavity and the second cavity to push the sliding member 310 to slide along the sliding channel.

[0056] Optionally, the movable component 300 also includes a second elastic member 360, which is embedded in the first annular groove, and the first end of the second elastic member 360 abuts against the bottom of the first annular groove, and the second end of the second elastic member 360 abuts against the first end of the first annular seal 330, and the second elastic member 360 is in an elastically compressed state.

[0057] See Figure 1 The second elastic member 360 can also be a spring, and the first elastic member 320 can be coaxially arranged with the first segment 311 and embedded in the first annular groove.

[0058] It can be understood that during the process of the sliding member 310 sliding toward the side of the oil groove 101, the second elastic member 360 is always in an elastic compression state, the first annular seal 330 extends relative to the first annular groove, and the second end of the first annular seal 330 can always abut against the end face of the end cover 350 toward one end of the sliding member 310.

[0059] In this embodiment, since the second elastic member 360 is in an elastically compressed state, during the sliding of the sliding member 310 toward the oil groove 101, under the push of the second elastic member 360, the second end of the first annular seal 330 can always abut against the end face of the end cover 350 toward the end of the sliding member 310, and in this process, the first end of the first annular seal 330 is located in the first annular groove, so the first cavity and the second cavity can always be kept in a relatively isolated state.

[0060] Optionally, the end cap 350 includes a columnar boss 352 extending into the interior of the sliding channel, and the side wall of the columnar boss 352 is in contact with the inner wall of the sliding channel. The end surface of the columnar boss 352 facing the end of the sliding member 310 is provided with a first annular protrusion 353, and the first annular protrusion 353 is arranged around the first annular seal 330. The side wall of the columnar boss 352 is provided with a second annular groove. The movable assembly 300 also includes a second annular seal 340, which is embedded in the second annular groove and abuts against the inner wall of the sliding channel.

[0061] When the sliding member 310 is located at the second position, the first annular protrusion 353 abuts against the sliding member 310 .

[0062] The second position in this embodiment may refer to the maximum position at which the sliding member 310 can slide toward the end cover 350 under the action of the first elastic member 320. Figure 1Due to the blocking effect of the first annular protrusion 353, when the sliding member 310 is located Figure 1 In the second position, the sliding member 310 cannot slide further toward the end cover 350 .

[0063] The second annular sealing member 340 may be a sealing member made of various materials, for example, a sealing member made of various plastic materials.

[0064] In this embodiment, by providing the first annular protrusion 353, the sliding range of the sliding member 310 in the sliding channel can be limited. At the same time, when the sliding member 310 is located at the second position, since the first annular protrusion 353 abuts against the sliding member 310, the first annular protrusion 353 can form a second layer of sealing structure in addition to the first annular seal 330. At the same time, the second annular seal 340 can improve the sealing effect of the connection between the columnar boss 352 and the sliding channel, so that the isolation effect between the first cavity and the second cavity can be further improved.

[0065] Optionally, the sidewall of the second segment 312 is in contact with the inner wall of the second sub-channel 108. A third annular groove is defined in the sidewall of the second segment 312. The movable assembly 300 further includes a third annular seal 370, which is embedded in the third annular groove and abuts against the inner wall of the second sub-channel 108. The third annular seal 370 can be made of various materials, for example, various plastic materials.

[0066] See Figure 6 This is a schematic diagram of the structure of a compressor provided in another embodiment of the present application. Compared with the above embodiment, in this embodiment, the isolation between the first cavity and the second cavity can also be achieved by sleeve-mounting a third annular seal 370 on the second segment 312. Figure 6 ,exist Figure 6 In the illustrated embodiment, the movable component 300 also includes the above-mentioned end cover 350. When the sliding member 310 is located in the second position, the sliding member 310 abuts against the end cover 350. In this way, the sliding range of the sliding member 310 is limited by the end cover 350.

[0067] In this embodiment, by sleeve-mounting the third annular seal 370 on the second segment 312 , relative isolation between the first cavity and the second cavity can be achieved.

[0068] In some embodiments of the present application, the first annular seal 330 , the second annular seal 340 , and the third annular seal 370 may be provided simultaneously in the compressor to further improve the isolation effect between the first cavity and the second cavity.

[0069] Optionally, the first elastic member 320 is an annular elastic member, and the first elastic member 320 is sleeved on the second segment 312;

[0070] The first step surface 103 is provided with a second annular protrusion 102, which is arranged around the first elastic member 320. When the sliding member 310 is located at the first position, the second step surface 313 is in contact with the end surface of the second annular protrusion 102 facing the second step surface 313.

[0071] See Figure 1 Due to the blocking effect of the second annular protrusion 102 , when the sliding member 310 is located at the first position, the sliding member 310 cannot slide further toward the oil groove 101 . At this time, the sliding member 310 completely cuts off the oil groove 101 .

[0072] In this embodiment, by providing the second annular protrusion 102 , the sliding range of the sliding member 310 in the sliding channel can be limited. At the same time, the second annular protrusion 102 can limit the position of the first elastic member 320 .

[0073] See Figure 10 In some other embodiments of the present application, the above-mentioned sealing member may not be provided between the movable component 300 and the sliding channel.

[0074] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. A compressor, characterized in that: The invention comprises a housing (400), a vortex stator (100), a vortex movable plate (200) and a movable assembly (300), wherein the vortex stator (100) and the vortex movable plate (200) are respectively arranged in the housing (400), and the vortex stator (100) is cooperatively connected with the vortex movable plate (200), and the vortex movable plate (200) can rotate relative to the vortex stator (100), and an oil groove (101) is provided on the end surface of the vortex stator (100) facing one end of the vortex stator (100), and an oil injection hole (201) corresponding to the oil groove (101) is provided on the end surface of the vortex movable plate (200) facing one end of the vortex stator (100), and when the vortex movable plate (200) rotates relative to the vortex stator (100), the oil injection hole (201) can spray oil into the oil groove (101); A sliding channel communicating with the oil groove (101) is provided in the scroll stator (100), and the movable assembly (300) includes a sliding member (310), the sliding member (310) being arranged in the sliding channel, a first cavity and a second cavity being formed in the housing (400), a first end of the sliding member (310) being communicated with the first cavity, and a second end of the sliding member (310) being communicated with the second cavity; During the process of gas compression by the compressor, a pressure difference is formed between the pressure in the first cavity and the pressure in the second cavity. The pressure difference between the first cavity and the second cavity can drive the sliding member (310) to slide along the sliding channel toward the oil groove (101). When the sliding member (310) is in the first position, the oil groove (101) is at least partially intercepted by the sliding member (310). When the sliding member (310) is in the second position, the sliding member (310) is located outside the oil groove (101).

2. The compressor according to claim 1, characterized in that The end surface of the vortex stator (100) facing away from the vortex moving plate (200) and the inner wall of the shell (400) form a pressure relief cavity (404), the first cavity is the pressure relief cavity (404), and the second cavity is the cavity formed by the internal space of the oil tank (101).

3. The compressor according to claim 2, characterized in that The compressor further comprises a frame (500), the frame (500) being located on a side of the scroll moving plate (200) facing away from the scroll stator (100), the frame (500) comprising an annular connecting portion (501) arranged around a disk surface (202) of the scroll moving plate (200), the scroll stator (100) being fixedly connected to the annular connecting portion (501), and a back pressure chamber (405) being enclosed between an outer side wall of the scroll moving plate (200) and the annular connecting portion (501); The second cavity is in communication with the back pressure cavity (405), or, when the vortex disk (200) rotates to a preset position, the second cavity is in communication with the back pressure cavity (405).

4. The compressor according to claim 1, characterized in that The end surface of the vortex stator (100) facing away from the vortex moving plate (200) and the inner wall of the housing (400) form a pressure discharge chamber (404), and the vortex moving plate (200) and the vortex stator (100) form a compression chamber (406). The first chamber is the pressure discharge chamber (404), and the second chamber is the compression chamber (406).

5. The compressor according to claim 1, characterized in that During gas compression by the compressor, the pressure in the first cavity is greater than the pressure in the second cavity, and the pressure difference between the first cavity and the second cavity is positively correlated with the compression ratio of the compressor; When the pressure difference between the first cavity and the second cavity is greater than a preset threshold, the sliding member (310) is located at the first position under the action of the pressure difference between the first cavity and the second cavity; When the pressure difference between the first cavity and the second cavity is less than or equal to the preset threshold, the sliding member (310) is located at the second position.

6. The compressor according to claim 5, characterized in that The movable component (300) further includes a first elastic member (320); the sliding member (310) includes a first segment (311) and a second segment (312); the first segment (311) and the second segment (312) are respectively columnar, and the cross-sectional area of the first segment (311) is larger than the cross-sectional area of the second segment (312); the sliding channel includes a first sub-channel (107) and a second sub-channel (108); the second sub-channel (108) is located between the first sub-channel (107) and the oil groove (101); the cross-sectional area of the first sub-channel (107) matches the cross-sectional area of the first segment (311), and the cross-sectional area of the second sub-channel (108) matches the cross-sectional area of the second segment (312); The first segment (311) is located in the first sub-channel (107), and the side wall of the first segment (311) is in contact with the inner wall of the first sub-channel (107); at least a portion of the second segment (312) is located in the second sub-channel (108), and the side wall of the second segment (312) is in contact with the inner wall of the second sub-channel (108); the sliding channel includes a first step surface (107) formed at the connection between the first sub-channel (107) and the second sub-channel (108); 03), the side wall of the sliding member (310) includes a second step surface (313) formed at the connection between the first segment (311) and the second segment (312), the first step surface (103) and the second step surface (313) are opposite to each other, and the first end of the first elastic member (320) is connected to the first step surface (103), the second end of the first elastic member (320) is connected to the second step surface (313), and the first elastic member (320) is in an elastically compressed state; When the pressure difference between the first cavity and the second cavity is less than or equal to the preset threshold, under the action of the first elastic member (320), the sliding member (310) is located at the second position.

7. The compressor according to claim 6, characterized in that The movable assembly (300) further includes an end cover (350) and a first annular seal (330), wherein the end cover (350) is fixedly connected to a port at one end of the sliding channel away from the oil groove (101), and the end cover (350) is provided with a communication channel (351) for connecting the first end of the sliding member (310) and the first cavity; The end surface of the sliding member (310) facing the end cover (350) is provided with a first annular groove matching the first annular seal (330), the first end of the first annular seal (330) is embedded in the first annular groove, the second end of the first annular seal (330) extends out of the first annular groove, and the second end of the first annular seal (330) is in contact with the end surface of the end cover (350) facing the sliding member (310), and the end surface of the connecting channel (351) facing the sliding member (310) is located inside the first annular seal (330).

8. The compressor according to claim 7, characterized in that The movable component (300) also includes a second elastic member (360), which is embedded in the first annular groove, and the first end of the second elastic member (360) abuts against the bottom of the first annular groove, and the second end of the second elastic member (360) abuts against the first end of the first annular seal (330), and the second elastic member (360) is in an elastically compressed state.

9. The compressor according to claim 7, characterized in that The end cover (350) includes a columnar boss (352) extending into the interior of the sliding channel, and the side wall of the columnar boss (352) is in contact with the inner wall of the sliding channel. The end surface of the columnar boss (352) facing one end of the sliding member (310) is provided with a first annular protrusion (353), and the first annular protrusion (353) is arranged around the first annular seal (330). The side wall of the columnar boss (352) is provided with a second annular groove. The movable component (300) further includes a second annular seal (340), and the second annular seal (340) is embedded in the second annular groove, and the second annular seal (340) is in contact with the inner wall of the sliding channel. When the sliding member (310) is located at the second position, the first annular protrusion (353) abuts against the sliding member (310).

10. The compressor according to claim 6, characterized in that The side wall of the second segment (312) is in contact with the inner wall of the second sub-channel (108), and a third annular groove is provided on the side wall of the second segment (312). The movable component (300) further includes a third annular seal (370), which is embedded in the third annular groove and abuts against the inner wall of the second sub-channel (108).

11. The compressor according to claim 6, characterized in that The first elastic member (320) is an annular elastic member, and the first elastic member (320) is sleeved on the second segment (312); The first step surface (103) is provided with a second annular protrusion (102), and the second annular protrusion (102) is arranged around the first elastic member (320). When the sliding member (310) is located at the first position, the second step surface (313) is in contact with the end surface of the second annular protrusion (102) facing the second step surface (313).

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