Scroll compressor and refrigeration equipment

Abstract

The invention provides a scroll compressor and refrigeration equipment, and belongs to the field of compressors. The mass block is fixed to the crankshaft of the compressor, the sealing structure is arranged between the upper end face of the mass block and the second disc face of the orbiting scroll, the contact area of the orbiting scroll base plate in a high-temperature and high-pressure cavity can be greatly reduced, and therefore deformation of the orbiting scroll base plate is reduced, the problem of abnormal abrasion of the tooth bottom of the orbiting scroll is solved, and the service life of the orbiting scroll is prolonged. The reliability of the compressor is improved.

Description

Technical Field

[0001] The present application relates to the technical field of compressors, and in particular to a scroll compressor and a refrigeration device. Background Art

[0002] Scroll compressors have the advantages of simple structure, small size, light weight, low noise, high mechanical efficiency and stable operation. With the development of air-conditioning technology, scroll compressors are also developing towards a wider operating range and higher frequency.

[0003] The movable scroll bearing seat of a conventional scroll compressor moves inside the high-temperature and high-pressure upper bracket oil pool. Figure 1 As shown, the sealing ring divides the upper bracket cavity into a high-temperature and high-pressure cavity ( Figure 1 D1 is the cavity diameter), and a low-temperature and low-pressure cavity.

[0004] However, under high-frequency and high-pressure ratio operating conditions, the bottom of the orbiting scroll tooth deforms significantly under the high temperature and high-pressure environment of the cavity, resulting in abnormal wear on the top of the fixed scroll tooth, thus affecting the reliability of the compressor. Summary of the invention

[0005] The embodiment of the present application provides a scroll compressor and refrigeration equipment, which can significantly reduce the contact area of ​​the movable scroll base plate {i.e., the second disk surface of the movable scroll} with the high-temperature and high-pressure cavity by fixing a mass block on the crankshaft shoulder of the compressor and providing a sealing structure between the upper end surface of the mass block and the second disk surface of the movable scroll, thereby reducing the deformation of the movable scroll base plate, solving the problem of abnormal wear of the movable disk tooth bottom, and improving the reliability of the compressor. Specifically:

[0006] A first aspect of an embodiment of the present application provides a scroll compressor, comprising:

[0007] chassis;

[0008] An upper bracket, the outer peripheral surface of the upper bracket is fixedly matched with the inner wall of the casing, and the inner peripheral surface is used to match with the rotor assembly;

[0009] A rotor assembly, the rotor assembly includes a crankshaft, a movable scroll connected to an end of the crankshaft, and a fixed scroll meshed with the movable scroll, the movable scroll having a first disk surface facing the fixed scroll side and a second disk surface opposite to the first disk surface, an upper bracket cavity is defined between the second disk surface of the movable scroll, the outer peripheral surface of the crankshaft and the inner peripheral surface of the upper bracket, and the upper bracket cavity is connected to the exhaust passage of the compressor and the intake passage of the compressor;

[0010] The crankshaft comprises a main shaft portion, a crank portion eccentrically arranged at the end of the main shaft and used for transmission cooperation with the movable scroll, and a shoulder portion formed between the main shaft portion and the crank portion, wherein a mass block is fixedly sleeved on the main shaft portion or the shoulder portion, and the mass block comprises an inner annular surface cooperated with the outer periphery of the crank portion, an outer annular surface cooperated with the inner periphery of the upper bracket, and a top surface and a bottom surface between the inner annular surface and the outer annular surface;

[0011] A sealing structure is formed between the top surface of the mass block and the second disk surface of the movable scroll, and the sealing structure is used to separate the upper bracket cavity into a high-temperature and high-pressure cavity connected to the exhaust channel and a low-temperature and low-pressure cavity connected to the intake channel.

[0012] In the above technical solution, an annular sealing groove is formed on the top surface of the mass block;

[0013] The sealing structure includes a sealing member, which is embedded in the annular sealing groove, and at least a portion of the sealing member protrudes out of the annular sealing groove and seals with the second disk surface of the movable scroll.

[0014] In the above technical solution, the sealing member includes an elastic member and a sealing ring, the bottom portion of the annular sealing groove is provided with the elastic member, and the surface of the elastic member is provided with the sealing ring;

[0015] Wherein, under the pressing action of the elastic member, the sealing ring at least partially protrudes out of the annular sealing groove and elastically presses on the second disk surface of the movable scroll.

[0016] In the above technical solution, the elastic member includes a wave spring arranged in the annular sealing groove.

[0017] In the above technical solution, the mass block is an eccentric mass block with an eccentric hole;

[0018] The crank part which is eccentrically arranged relative to the main shaft part is arranged in the eccentric hole, and the crankshaft is balanced by cooperating with the eccentric hole of the mass block.

[0019] In the above technical solution, the bearing seat of the movable scroll is embedded in the eccentric hole;

[0020] The outer periphery of the bearing seat of the movable scroll is matched with the eccentric hole gap, and the inner periphery of the bearing seat of the movable scroll is matched with the crank part through the bearing transmission.

[0021] In the above technical solution, the rotation axis of the outer circle of the mass block is colinear with the rotation axis of the main shaft part;

[0022] The rotation axis of the eccentric hole of the mass block is colinear with the rotation axis of the crank portion.

[0023] In the above technical solution, the eccentric hole is a circular hole, and the annular sealing groove is a circular groove arranged on the top surface of the mass block and arranged around the outer periphery of the eccentric hole;

[0024] The center of the eccentric hole is concentric with the center of the annular sealing groove.

[0025] In the above technical solution, a mounting groove is concavely provided on one side of the bottom surface of the mass block, and the mounting groove is matched with the shoulder part of the crankshaft and is locked by a locking member.

[0026] A second aspect of an embodiment of the present application provides a refrigeration device, which includes the scroll compressor provided in the first aspect of an embodiment of the present application.

[0027] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0028] In the embodiment of the present application, a mass block is fixed on the crankshaft of the compressor, and a sealing structure is provided between the upper end surface of the mass block and the second disk surface of the movable scroll. This can greatly reduce the contact area of ​​the movable scroll base plate {i.e., the second disk surface of the movable scroll} with the high-temperature and high-pressure cavity, thereby reducing the deformation of the movable scroll base plate, solving the problem of abnormal wear of the movable disk tooth bottom, and improving the reliability of the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a partial cross-sectional structural schematic diagram of a scroll compressor in the prior art;

[0030] Figure 2 Schematic diagram of the overall structure of the scroll compressor in the embodiment of the present application;

[0031] Figure 3 It is a schematic diagram of a partial cross-sectional structure of a scroll compressor in an embodiment of the present application;

[0032] Figure 4 This is a schematic cross-sectional view of the rotor assembly and the mass block after assembly in the embodiment of the present application;

[0033] Figure 5 It is a schematic diagram of the exploded structure of the rotor assembly and the mass block during assembly in the embodiment of the present application.

[0034] in:

[0035] Figure 1 middle:

[0036] 1-static scroll; 2-orbiting scroll; 3-upper bracket; 4-sealing ring; 5-high temperature and high pressure chamber; 6-low temperature and low pressure chamber;

[0037] Figure 2-Figure 5 middle:

[0038] 100- housing;

[0039] 200-upper bracket;

[0040] 300-rotor assembly; 301-crankshaft; 3011-main shaft portion; 3012-crank portion; 3013-shoulder portion; 302-orbiting scroll; 303-static scroll;

[0041] 400-mass block; 401-annular sealing groove; 402-sealing member; 4021-elastic member; 4022-sealing ring;

[0042] 500-high temperature and high pressure chamber;

[0043] 600- low temperature and low pressure chamber;

[0044] 700-locking piece;

[0045] 800-Bearings. DETAILED DESCRIPTION

[0046] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0047] Throughout the specification and claims, the following terms have at least the meanings explicitly associated herein, unless the context dictates otherwise. The meanings identified below do not necessarily limit the terms, but merely provide illustrative examples of the terms.

[0048] In the description of the present invention, the phrase "in one embodiment" does not necessarily refer to the same embodiment, although it may refer to the same embodiment. Similarly, the phrase "in some embodiments" as used herein, when used multiple times, does not necessarily refer to the same embodiment, although it may refer to the same embodiment. As used herein, the term "or" is an inclusive "or" operator and is equivalent to the term "and / or", unless the context clearly dictates otherwise. The term "based on" is not exclusive and allows for additional factors not described, unless the context clearly dictates otherwise. The word "exemplary" means "used as an example, instance or illustration" in this article. Any embodiment described herein as "exemplary" is not necessarily interpreted as being superior or superior to other embodiments. The scope of the present invention is limited only by the scope of the appended claims, and any examples set forth in this specification are not intended to be limiting, but only to set forth some of the many possible embodiments of the claimed invention. The various embodiments provided by the present invention should not be interpreted as limiting the scope of protection of the present invention.

[0049] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0050] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0051] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0053] Background

[0054] Scroll compressors have the advantages of simple structure, small size, light weight, low noise, high mechanical efficiency and stable operation. With the development of air-conditioning technology, scroll compressors are also developing towards a wider operating range and higher frequency.

[0055] The movable scroll bearing seat of a conventional scroll compressor moves inside the high-temperature and high-pressure upper bracket oil pool. Figure 1 As shown, the sealing ring divides the upper bracket cavity into high temperature and high pressure cavities. Figure 1 D1 is the cavity diameter and the low temperature and low pressure cavity.

[0056] However, under high-frequency and high-pressure ratio operating conditions, the bottom of the orbiting scroll tooth deforms significantly under the high temperature and high-pressure environment of the cavity, resulting in abnormal wear on the top of the fixed scroll tooth, thus affecting the reliability of the compressor.

[0057] Based on this, Figure 2-Figure 5 As shown, the first aspect of the embodiment of the present application provides a scroll compressor, comprising:

[0058] Housing 100;

[0059] An upper bracket 200, the outer peripheral surface of the upper bracket 200 is fixedly matched with the inner wall of the housing 100, and the inner peripheral surface is used to match with the rotor assembly;

[0060] The rotor assembly 300 includes a crankshaft 301, a movable scroll 302 connected to the end of the crankshaft 301, and a fixed scroll 303 meshing with the movable scroll 302. The movable scroll 302 has a first disk surface facing the fixed scroll side and a second disk surface opposite to the first disk surface. An upper support cavity is defined between the second disk surface of the movable scroll 302, the outer peripheral surface of the crankshaft 301, and the inner peripheral surface of the upper support 200. The upper support cavity is connected to the exhaust passage of the compressor and the intake passage of the compressor.

[0061] The crankshaft 301 includes a main shaft portion 3011, a crank portion 3012 eccentrically arranged at the end of the main shaft portion 3011 and used for transmission cooperation with the movable scroll 302, and a shoulder portion 3013 formed between the main shaft portion 3011 and the crank portion 3012, wherein a mass block 400 is fixedly sleeved on the main shaft portion 3011 or the shoulder portion 3013, and the mass block 400 includes an inner annular surface matched with the outer periphery of the crank portion 3012, an outer annular surface matched with the inner periphery of the upper bracket 200, and a top surface and a bottom surface between the inner annular surface and the outer annular surface;

[0062] A sealing structure is formed between the top surface of the mass block 400 and the second disk surface of the movable scroll 302, and the sealing structure is used to separate the upper support cavity into a high-temperature and high-pressure cavity 500 connected to the exhaust channel and a low-temperature and low-pressure cavity 600 connected to the intake channel.

[0063] Preferably, the mass block 400 is arranged on the crank shoulder of the compressor. In the embodiment of the present application, by fixing the mass block on the crank shoulder of the compressor and providing a sealing structure between the upper end surface of the mass block and the second disk surface of the movable scroll, the contact area of ​​the movable scroll base plate {i.e., the second disk surface of the movable scroll} in the high-temperature and high-pressure cavity can be greatly reduced, thereby reducing the deformation of the movable scroll base plate, solving the problem of abnormal wear of the movable disk tooth bottom, and improving the reliability of the compressor.

[0064] See also Figure 1 D1 and Figure 4 It can be seen from D2 that, compared with the conventional prior art, in the embodiment of the present application, by setting a mass block 400 at the shoulder portion 3012 of the crankshaft 301 and setting a sealing structure between the top of the mass block 400 and the bottom of the movable scroll 302, the diameter of the high-temperature and high-pressure cavity 500 can be greatly reduced, thereby reducing the high-temperature and high-pressure load action area of ​​the substrate of the movable scroll 302, thereby reducing the deformation of the substrate and reducing the risk of abnormal wear of the tooth bottom contact.

[0065] Further, in some possible implementations, such as Figure 3-Figure 5 As shown, an annular sealing groove 401 is formed on the top surface of the mass block 400;

[0066] The sealing structure includes a sealing member 402 , which is embedded in the annular sealing groove 401 , and at least a portion of the sealing member 402 protrudes out of the annular sealing groove 401 and seals with the second disk surface of the movable scroll 302 .

[0067] In the embodiment of the present application, an annular sealing groove 401 is provided on the top surface where the mass block 400 cooperates with the movable scroll 302, and a sealing member 402 that seals and cooperates with the movable scroll 302 is provided in the annular sealing groove 401. In this way, the upper bracket cavity can be divided into two independent high-temperature and high-pressure chambers 500 and low-temperature and low-pressure chambers 600. Moreover, since the sealing member 402 is provided on the top surface of the mass block 400, compared with the prior art in which the sealing ring is provided on the top surface of the upper bracket, the diameter of the high-temperature and high-pressure chamber 500 can be effectively reduced, thereby reducing the high-temperature and high-pressure load action area of ​​the substrate of the movable scroll 302, thereby reducing the deformation of the substrate and reducing the risk of abnormal wear of the tooth bottom contact.

[0068] Specifically, in some possible implementations, such as Figure 3-Figure 5 As shown, the sealing member 402 includes an elastic member 4021 and a sealing ring 4022. The elastic member 4021 is disposed at the bottom of the annular sealing groove 401, and the sealing ring 4022 is disposed on the surface of the elastic member 4021.

[0069] The sealing ring 4022 at least partially protrudes out of the annular sealing groove 401 under the pressing action of the elastic member 4021 and elastically presses on the second disk surface of the movable scroll 302 .

[0070] In the embodiment of the present application, the sealing member 402 is configured as a combination of an elastic member 4021 and a sealing ring 4022, so that the sealing ring 4022 is always pressed against the base surface {i.e., the second disk surface} of the movable scroll 302 under the elastic action of the elastic member 4021, thereby improving the sealing effect between the high-temperature and high-pressure chamber 500 and the low-temperature and low-pressure chamber 600.

[0071] Further, in some possible implementations, such as Figure 5 As shown, preferably, the elastic member 4021 includes a wave spring disposed in the annular sealing groove 401 .

[0072] In the embodiment of the present application, the elastic member 4021 is configured as a wave spring. When the wave spring is installed in the annular sealing groove 401, the annular sealing ring 4022 disposed in the annular sealing groove 401 can be lifted up. At the same time, the lifting height of the lifted annular sealing ring 4022 at each position in the circumferential direction thereof is approximately equal, thereby improving the sealing effect of the annular seal 4022.

[0073] Further, in some possible implementations, such as Figure 3-Figure 5 As shown, the mass block 400 is an eccentric mass block having an eccentric hole 403;

[0074] The crank portion 3012 eccentrically arranged relative to the main shaft portion 3011 is arranged in the eccentric hole 403 , and balances the crankshaft 301 by cooperating with the eccentric hole 403 of the mass block 400 .

[0075] In the embodiment of the present application, the mass block 400 is set to an eccentric mass block with an eccentric hole 403, and the eccentrically arranged crank part 3012 is set in the eccentric hole 403. In this way, on the one hand, the eccentrically arranged crank part 3012 can be used to drive the movable scroll 302 to move relative to the fixed scroll 303 to compress the refrigerant. On the other hand, the cooperation between the mass block 400 and the crank part 301 can also balance the crankshaft 301, so that the crankshaft 301 and the mass block 400 that constitute an integral whole are in a non-eccentric state, thereby reducing the rotational resistance of the crankshaft 301 during rotation. Since the rotational resistance of the crankshaft 301 is reduced, theoretically, the oil stirring loss of the crank part 3012 on the crankshaft 301 is zero, so the oil stirring loss is greatly reduced.

[0076] Specifically, in some possible implementations, such as Figure 3-Figure 5 As shown, the rotation axis of the outer circle of the mass block 400 is colinear with the rotation axis of the main shaft portion 3011;

[0077] The rotation axis of the eccentric hole 403 of the mass block 400 is colinear with the rotation axis of the crank portion 3012 .

[0078] Furthermore, in some possible implementations, the eccentric hole 403 is a circular hole, and the annular sealing groove 401 is a circular groove disposed on the top surface of the mass block 400 and arranged around the outer periphery of the eccentric hole 403;

[0079] The center of the eccentric hole 403 is concentric with the center of the annular sealing groove 401 .

[0080] That is, in the embodiment of the present application, the outer circle of the eccentric mass block 400 is concentric with the main shaft center line {i.e., the rotation center} of the crankshaft 301, and an eccentric hole 403 is provided in the eccentric mass block 400, and the center of the eccentric hole 403 is concentric with the center line of the crank portion 3012. The bearing seat 3021 of the movable scroll 302 has a cold-pressed sliding bearing 800 inside, which is installed on the crank portion 3012, and the movable scroll bearing seat 3021 is built into the eccentric hole 403 of the eccentric mass block 400, and there is a gap between the eccentric hole 403. Because the center of the eccentric hole 403 is concentric with the center line of the crank portion 3012, the movable scroll bearing seat 3021 and the eccentric hole of the eccentric mass block 403 can move relative to each other.

[0081] Further, in some possible implementations, such as Figure 3-Figure 5 As shown, the upper bracket 200 has an upper bracket top surface facing the second disk surface side of the movable scroll 302, and a distance x1 is spaced between the top surface of the upper bracket 200 and the second disk surface of the movable scroll 302;

[0082] There is a distance x2 between the top surface of the mass block 400 and the second disk surface of the movable scroll 302;

[0083] like Figure 3 As shown, where x1>x2.

[0084] Furthermore, in some possible implementations, a mounting groove is recessed on one side of the bottom surface of the mass block 400 , and the mounting groove is matched with the shoulder portion 3013 of the crankshaft 301 and is locked by a locking member 700 .

[0085] In the embodiment of the present application, a mounting groove is provided on the bottom surface of the mass block 400 , so as to facilitate mounting the mass 400 on the shoulder portion 3013 of the crankshaft 301 .

[0086] Specifically, in order to more clearly understand the improvement of the scroll compressor provided in the embodiment of the present application relative to the existing scroll compressor, the following is combined with Figure 1-Figure 5 For further details:

[0087] like Figure 1As shown, the conventional scroll compressor is mainly composed of a motor, an upper bracket 3, a lower bracket, a fixed scroll 1, a movable scroll 2, a cross slip ring, a crankshaft, etc. The motor is fixed to the compressor housing by a shrink sleeve, and the upper bracket 3 is fixed to the housing by spot welding. The movable scroll 2 and the fixed scroll 1 are installed on the upper bracket 3 with a phase angle difference of 180 degrees. The movable scroll 2 moves under the drive of the crankshaft and meshes with the fixed scroll 1 to form a series of crescent-shaped closed cavities that are isolated from each other and have continuously changing volumes. The fixed scroll 1 is fixed to the upper bracket 3 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.

[0088] When the compressor is running, the motor drives the crankshaft to rotate, and the crank of the crankshaft drives the movable scroll 2 to move. Under the anti-rotation limit of the cross slip ring, the movable scroll 2 performs translational motion around the center of the crankshaft with a fixed radius e. The refrigerant entering from the suction pipe is sucked into the crescent-shaped suction cavity formed by the movable scroll 2 and the fixed scroll 1, and is discharged from the exhaust hole of the fixed scroll 1 after being compressed, and enters the cavity between the compressor cover and the fixed scroll 1, and then enters the cavity between the upper bracket 3 and the motor through the exhaust groove of the fixed scroll 1 and the upper bracket 3. Part of it enters the lower end of the motor through the flow groove between the motor and the housing, and finally the high-pressure exhaust refrigerant is discharged through the exhaust pipe.

[0089] like Figure 3 As shown, Figure 2 This is a schematic diagram of the partial structure of the scroll compressor in an embodiment of the present application. The lower mounting groove of the eccentric mass block 400 is fixed on the shoulder portion 3013 of the crankshaft 301, and then fixed by a locking member 800 {preferably a screw}. An annular sealing groove 401 is provided at the upper end of the eccentric mass block 400, and the annular sealing groove 401 has a built-in wave spring and a sealing ring.

[0090] like Figure 4 As shown in the schematic diagram of the rotor assembly, the outer circle of the eccentric mass block 400 is concentric with the main shaft centerline of the crankshaft 301 {i.e., the rotation center}, and an eccentric hole 403 is provided in the eccentric mass block 400. The center of the eccentric hole 403 is concentric with the centerline of the crank portion 3012. The cold-pressed sliding bearing 800 inside the bearing seat 3021 of the movable scroll 302 is installed on the crank portion 3012. The movable scroll bearing seat 3021 is built into the eccentric hole 403 of the eccentric mass block 400, and there is a gap between the eccentric hole 403 and the eccentric hole 403. Because the center of the eccentric hole 403 is concentric with the centerline of the crank portion 3012, the movable scroll bearing seat 3021 and the eccentric hole 403 of the eccentric mass block 400 can move relative to each other. The assembly relationship is shown in FIG. Figure 5 .

[0091] Specifically, when the compressor is in operation, the sealing ring 4022 in the annular sealing groove 401 of the eccentric mass block 400 contacts the base plate of the movable scroll 302 {that is, contacts the second disk surface of the movable scroll} under the elastic force of the wave spring, thereby dividing the upper bracket cavity of the upper bracket 200 into a high-temperature and high-pressure cavity 500 and a low-temperature and low-pressure cavity 600. Because the sealing ring 4022 is installed on the eccentric mass block 400, compared with the conventional prior art, the diameter D2 of the high-temperature and high-pressure cavity 500 can be greatly reduced, as shown in FIG. Figure 4 As shown, the high temperature and high pressure load action area of ​​the substrate of the movable scroll 302 is reduced, thereby reducing the deformation of the substrate and reducing the risk of abnormal wear of the bottom contact of the teeth. In addition, the lubricating oil is stored in the oil pool of the upper bracket 200. Because the bearing seat 3021 of the movable scroll 302 is inserted into the eccentric hole 403 of the eccentric mass block 400, and because the outer circle of the eccentric mass block 400 is concentric with the main shaft part 3011 of the crankshaft, the oil stirring loss of the crank part 3012 on the crankshaft is theoretically zero, so the oil stirring loss is greatly reduced. Combined with the above description, in the embodiment of the present application, by installing the sealing ring on the eccentric block 400, the deformation of the substrate of the movable scroll 302 can be greatly reduced, thereby ensuring the reliable and efficient operation of the compressor.

[0092] Furthermore, the second aspect of the embodiment of the present application also provides a refrigeration device, which includes the scroll compressor provided by the first aspect of the embodiment of the present application.

[0093] In the above-mentioned embodiments of the present application, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments. The steps shown in the relevant flow chart can be executed in a computer system such as a set of computer executable instructions, and although the logical order is shown in the flow chart, in some cases, the steps shown or described can be executed in an order different from that here. In other words, the order of steps described in the foregoing embodiments is only an example, and it is also within the scope of protection of the embodiments of the present application to reasonably adjust the order of steps based on the content of the embodiments of the present application.

[0094] The sequence of serial numbers or introduction of the embodiments of the present application is for description only and does not represent the superiority or inferiority of the embodiments.

[0095] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0096] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A scroll compressor, characterized in that: include: Housing (100); An upper bracket (200), the outer peripheral surface of the upper bracket (200) being fixedly matched with the inner wall of the casing (100), and the inner peripheral surface being used to match with the rotor assembly; A rotor assembly (300), the rotor assembly (300) comprising a crankshaft (301), a movable scroll (302) connected to an end of the crankshaft (301), and a fixed scroll (303) meshed with the movable scroll (302), the movable scroll (302) having a first disk surface facing the fixed scroll side and a second disk surface opposite to the first disk surface, an upper support cavity is defined between the second disk surface of the movable scroll (302), the outer peripheral surface of the crankshaft (301) and the inner peripheral surface of the upper support (200), and the upper support cavity is connected to the exhaust passage of the compressor and the intake passage of the compressor; The crankshaft (301) comprises a main shaft portion (3011), a crank portion (3012) eccentrically arranged at the end of the main shaft portion (3011) and used for transmission cooperation with the movable scroll (302), and a shoulder portion (3013) formed between the main shaft portion (3011) and the crank portion (3012), wherein a mass block (400) is fixedly sleeved on the main shaft portion (3011) or the shoulder portion (3013), and the mass block (400) comprises an inner annular surface cooperated with the outer periphery of the crank portion (3012), an outer annular surface cooperated with the inner periphery of the upper bracket (200), and a top surface and a bottom surface between the inner annular surface and the outer annular surface; A sealing structure is formed between the top surface of the mass block (400) and the second disk surface of the movable scroll (302), and the sealing structure is used to separate the upper support cavity into a high-temperature and high-pressure cavity (500) connected to the exhaust channel and a low-temperature and low-pressure cavity (600) connected to the intake channel.

2. The scroll compressor according to claim 1, characterized in that: An annular sealing groove (401) is formed on the top surface of the mass block (400); The sealing structure comprises a sealing member (402), wherein the sealing member (402) is embedded in the annular sealing groove (401), and at least a portion of the sealing member (402) protrudes out of the annular sealing groove (401) and is sealingly matched with the second disk surface of the movable scroll (302).

3. The scroll compressor according to claim 2, characterized in that: The sealing member (402) comprises an elastic member (4021) and a sealing ring (4022); the elastic member (4021) is provided at the bottom of the annular sealing groove (401); and the sealing ring (4022) is provided on the surface of the elastic member (4021); Wherein, under the pressing action of the elastic member (4021), the sealing ring (4022) at least partially protrudes outside the annular sealing groove (401) and elastically presses against the second disk surface of the movable scroll (302).

4. The scroll compressor according to claim 3, characterized in that: The elastic member (4021) comprises a wave spring arranged in the annular sealing groove (401).

5. The scroll compressor according to any one of claims 2 to 4, characterized in that: The mass block (400) is an eccentric mass block having an eccentric hole (403); The crank portion (3012) eccentrically arranged relative to the main shaft portion (3011) is arranged in the eccentric hole (403), and the crankshaft is balanced by cooperating with the eccentric hole of the mass block.

6. The scroll compressor according to claim 5, characterized in that: The bearing seat (3021) of the movable scroll (302) is embedded in the eccentric hole (403); The outer periphery of the bearing seat (3021) of the movable scroll (302) is loosely fitted with the eccentric hole (403), and the inner periphery of the bearing seat (3021) of the movable scroll (302) is coupled with the crank portion (3012) via a bearing (800).

7. The scroll compressor according to claim 5, characterized in that: The rotation axis of the outer circle of the mass block (400) is colinear with the rotation axis of the main shaft portion (3011); The rotation axis of the eccentric hole (403) of the mass block (400) is colinear with the rotation axis of the crank part (3012).

8. The scroll compressor according to claim 5, characterized in that: The eccentric hole (403) is a circular hole, and the annular sealing groove (401) is a circular groove provided on the top surface of the mass block (400) and arranged around the outer periphery of the eccentric hole (403); The center of the eccentric hole (403) is concentric with the center of the annular sealing groove (401).

9. The scroll compressor according to any one of claims 1 to 4, characterized in that: A mounting groove is concavely provided on one side of the bottom surface of the mass block (400), and the mounting groove is matched with the shaft shoulder portion (3013) of the crankshaft (301) and is locked by a locking member (700).

10. A refrigeration device, characterized in that: The invention comprises the scroll compressor according to any one of claims 1 to 9.

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