Scroll compressors and refrigeration equipment

Abstract

The present invention discloses a scroll compressor and refrigeration equipment. The scroll compressor includes a fixed scroll and an orbiting scroll, wherein a first oil groove is provided on the end surface of the fixed scroll; the orbiting scroll is rotatably connected to the fixed scroll and cooperates with the fixed scroll to define a compression chamber; the orbiting scroll is provided with a first oil supply channel and a second oil supply channel, wherein the first oil supply channel is provided with a first oil outlet on the end surface of the orbiting scroll, and the first oil outlet is periodically connected to the first oil groove; the second oil supply channel is provided with a second oil outlet on the end surface of the orbiting scroll, and the second oil outlet is periodically connected to the first oil groove; the second oil outlet is located on the side of the end surface of the orbiting scroll away from the first oil outlet. The technical solution of the present invention improves the lubrication capacity between the end surfaces of the orbiting scroll and the fixed scroll, reduces wear between the two, and improves the reliability of the compressor.

Description

Technical Field

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

[0002] The scroll compressor includes a fixed scroll, an orbiting scroll and a crankshaft. The orbiting scroll is installed on the crankshaft. The orbiting scroll and the fixed scroll are assembled together and can move relative to the fixed scroll. When the scroll compressor is working, the eccentric movement of the crankshaft drives the orbiting scroll to move, so that the refrigerant forms a continuous operation of suction, compression and discharge in the compression chamber defined by the fixed scroll and the orbiting scroll, thereby realizing the suction, compression and exhaust process of the compressor.

[0003] In the related art, a high-pressure oil groove is usually opened on the end face of the static scroll, and the oil supply channel on the movable scroll supplies oil to the high-pressure oil groove of the static scroll. However, the lubricating oil coming out of the oil supply channel outlet of the movable scroll needs to pass through a longer path to reach the tail of the oil groove, which greatly reduces the lubrication effect, resulting in insufficient local lubrication of the scroll and wear problems. Summary of the Invention

[0004] The main purpose of the present invention is to provide a scroll compressor, aiming to improve the lubrication effect of the scroll plate and reduce wear.

[0005] To achieve the above-mentioned object, the scroll compressor proposed in the present invention comprises:

[0006] a fixed scroll, wherein a first oil groove is provided on an end surface of the fixed scroll; and

[0007] an orbiting scroll rotatably connected to the fixed scroll and cooperating with the fixed scroll to define a compression chamber;

[0008] The orbiting scroll is provided with a first oil supply channel and a second oil supply channel. The first oil supply channel is provided with a first oil outlet on the end surface of the orbiting scroll, and the first oil outlet is periodically connected to the first oil groove; the second oil supply channel is provided with a second oil outlet on the end surface of the orbiting scroll, and the second oil outlet is periodically connected to the first oil groove;

[0009] Wherein, the second oil outlet is located on a side of the end surface of the orbiting scroll away from the first oil outlet.

[0010] In one embodiment of the present application, the scroll compressor further comprises a bracket provided below the orbiting scroll, wherein a high-pressure oil storage chamber is formed between the bracket and the orbiting scroll;

[0011] The first oil inlet of the first oil supply channel is communicated with the high-pressure oil storage chamber, and the second oil inlet of the second oil supply channel is periodically communicated with the high-pressure oil storage chamber.

[0012] In one embodiment of the present application, it is defined that the orbiting scroll has a first state in which the second oil outlet is connected to the first oil groove and a second state in which the second oil outlet is not connected to the first oil groove during movement;

[0013] In the first state, the second oil inlet is connected to the high-pressure oil storage chamber;

[0014] In the second state, the second oil inlet is not connected to the high-pressure oil storage chamber.

[0015] In one embodiment of the present application, the movable scroll includes a movable scroll body, an movable scroll tooth provided on the movable scroll body, and an eccentric bearing portion for cooperating with the crankshaft, and the eccentric bearing portion is movably assembled in the high-pressure oil storage chamber;

[0016] The second oil supply channel is arranged on the movable plate body, and the second oil inlet and the second oil outlet are respectively located on the two side end surfaces of the movable plate body. On the end surface projection of the movable plate body, the second oil inlet is located on the outside of the eccentric bearing part; in the second state, the second oil inlet is blocked by the bracket.

[0017] In one embodiment of the present application, the first oil supply channel is provided in the movable plate body, the first oil inlet and the first oil outlet are respectively located on both side end surfaces of the movable plate body, and the first oil inlet is connected to the inner cavity of the eccentric bearing part.

[0018] In one embodiment of the present application, the second oil supply passage and the first oil supply passage are respectively arranged on opposite sides of the eccentric bearing portion.

[0019] In one embodiment of the present application, the scroll compressor also includes a casing, a crankshaft arranged in the casing and connected to the eccentric bearing portion, an oil pool is provided at the bottom of the casing, an oil suction channel connected to the oil pool is provided in the crankshaft, and an outlet end of the oil suction channel is connected to the high-pressure oil storage chamber.

[0020] In one embodiment of the present application, a back pressure chamber is further formed between the bracket and the movable scroll, and the back pressure chamber is arranged on the outer periphery of the high-pressure oil storage chamber; the bracket is provided with an annular groove, and a seal for isolating the back pressure chamber from the high-pressure oil storage chamber is provided in the annular groove, and the seal is clamped between the movable scroll and the bracket.

[0021] In one embodiment of the present application, the second oil outlet and the first oil outlet are respectively arranged on both radial sides of the end surface of the orbiting scroll.

[0022] In one embodiment of the present application, the orbiting scroll is provided with two second oil supply channels, and the second oil outlets of the two second oil supply channels are spaced apart from the first oil outlet on the end surface of the orbiting scroll.

[0023] In one embodiment of the present application, the diameter of the second oil outlet is the same as the width of the first oil groove.

[0024] In one embodiment of the present application, the fixed scroll plate has a fixed scroll tooth, and the first oil groove is annularly surrounding the outer periphery of the fixed scroll tooth;

[0025] A second oil groove is further provided on the end surface of the fixed scroll plate, and the second oil groove surrounds the outer circumference of the first oil groove; the first oil groove and the second oil groove are periodically connected to the first oil outlet respectively.

[0026] To achieve the above object, the present invention further provides a refrigeration device comprising the above scroll compressor.

[0027] In the scroll compressor of the technical solution of the present invention, the static scroll and the movable scroll cooperate to define a compression chamber, a first oil groove is provided on the end face of the static scroll, and the movable scroll is provided with a first oil supply channel and a second oil supply channel, and the first oil outlet of the first oil supply channel is periodically connected to the first oil groove. By setting the second oil outlet of the second oil supply channel on the side of the end face of the movable scroll away from the first oil outlet, and making the second oil outlet periodically connected to the first oil groove, when the movable scroll moves, the first oil outlet and the second oil outlet can be periodically connected to different positions of the first oil groove respectively, so that oil can be supplied from different positions of the first oil groove, which increases the oil supply amount and makes the oil distribution more uniform, thereby improving the lubrication ability between the end faces of the movable scroll and the static scroll, reducing the wear between the two, and improving the reliability of the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0029] Figure 1 It is a structural schematic diagram of an embodiment of a scroll compressor of the present invention;

[0030] Figure 2 Schematic diagram of the structure of the movable scroll in an embodiment of the present invention;

[0031] Figure 3 for Figure 2A full cross-sectional view of an embodiment of the present invention;

[0032] Figure 4 Schematic diagram of the structure of the fixed scroll in an embodiment of the present invention;

[0033] Figure 5 This is a structural diagram of an embodiment of the coordination between the orbiting scroll and the fixed scroll in the present invention;

[0034] Figure 6 Schematic diagram of the structure of another embodiment of the coordination between the orbiting scroll and the fixed scroll in the present invention;

[0035] Figure 7 Schematic diagram of the structure of another embodiment of the coordination between the orbiting scroll and the fixed scroll in the present invention;

[0036] Figure 8 It is a structural schematic diagram of another embodiment of the coordination between the orbiting scroll and the fixed scroll in the present invention.

[0037] Description of Figure Numbers:

[0038] Label name Label name 100 static scroll 202a Second oil outlet 101 First oil tank 202b Second oil inlet 102 Second oil tank 300 bracket 110 Stationary scroll gear 400 seals 200 Orbiting scroll A High-pressure oil storage chamber 210 Moving disk B Back pressure chamber 220 Orbital scroll gear 500 chassis 230 Eccentric bearing 510 oil pool 201 First oil supply channel 600 crankshaft 201a First oil outlet 610 Oil suction channel 201b First oil inlet 700 Throttle 202 Second oil supply channel

[0039] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0041] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0042] At the same time, the meaning of "and / or" or "and / or" appearing in the full text includes three options. Taking "A and / or B" as an example, it includes option A, or option B, or an option in which both A and B are satisfied.

[0043] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features specified as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0044] The present invention proposes a scroll compressor, which aims to increase the oil supply by providing more than one oil outlet on the movable scroll to different parts of the first oil tank on the fixed scroll, avoid uneven oil distribution on the end surface, improve the lubrication effect, reduce wear, and improve the performance of the compressor. It can be understood that this scroll compressor can be applied to different types of refrigeration equipment, such as refrigerators, air conditioners, cold chain vehicles, etc., and is not limited to a specific type of equipment. The structure of the scroll compressor is described below.

[0045] In the embodiment of the present invention, Figures 1 to 5 As shown, the scroll compressor includes a fixed scroll 100 and an orbiting scroll 200 .

[0046] A first oil groove 101 is provided on the end surface of the fixed scroll 100; the movable scroll 200 is rotatably connected to the fixed scroll 100, and cooperates with the fixed scroll 100 to define a compression chamber; the movable scroll 200 is provided with a first oil supply channel 201 and a second oil supply channel 202, and the first oil supply channel 201 is provided with a first oil outlet 201a on the end surface of the movable scroll 200, and the first oil outlet 201a is periodically connected to the first oil groove 101; the second oil supply channel 202 is provided with a second oil outlet 202a on the end surface of the movable scroll 200, and the second oil outlet 202a is periodically connected to the first oil groove 101; wherein, the second oil outlet 202a is located on the side of the end surface of the movable scroll 200 away from the first oil outlet 201a.

[0047] It can be understood that the movable scroll 200 in the scroll compressor is connected to the crankshaft 600, and the rotation of the crankshaft 600 drives the movable scroll 200 to rotate relative to the fixed scroll 100. During the rotation of the movable scroll 200, the movable scroll teeth 220 of the movable scroll 200 and the fixed scroll teeth 110 of the fixed scroll 100 engage with each other to compress the gas in the compression chamber and then discharge it from the exhaust port. The mutual cooperation structure between the movable scroll teeth 220 and the fixed scroll teeth 110 can refer to the cooperation structure in the conventional scroll compressor, and will not be repeated here. During the movement of the movable scroll 200 relative to the fixed scroll 100, the end face of the fixed scroll 100 cooperates with the end face of the movable scroll 200. A first oil groove 101 is provided on the end face of the fixed scroll 100, and the movable scroll 200 is provided with a first oil supply channel 201. The first oil outlet 201a of the first oil supply channel 201 is opened on the end face of the movable scroll 200. During the movement of the movable scroll 200, the first oil outlet 201a can be driven to periodically connect with the first oil groove 101 to realize oil supply in the first oil groove 101, which plays a role in lubricating the end face between the fixed scroll 100 and the movable scroll 200. However, since the first oil groove 101 only has the first oil outlet 201a for supplying oil, there is a problem of insufficient oil supply, which may lead to local insufficient lubrication and even wear. Based on this, the movable scroll 200 of this embodiment is also provided with a second oil supply channel 202. The second oil supply channel 202 is provided with a second oil outlet 202a on the end face of the movable scroll 200, which can be periodically connected with the first oil groove 101, and the second oil outlet 202a is set away from the first oil outlet 201a. When the movable scroll 200 moves, the first oil outlet 201a and the second oil outlet 202a can be periodically connected with different positions of the first oil groove 101 respectively, so that oil can be supplied from different positions of the first oil groove 101, which increases the oil supply and makes the oil distribution more uniform, thereby improving the lubrication ability between the end faces of the movable scroll 200 and the fixed scroll 100 and reducing the wear between the two.

[0048] The second oil outlet 202a is located on the side of the end surface of the movable scroll 200 away from the first oil outlet 201a. It can be understood that the position where the first oil groove 101 is connected to the first oil outlet 201a is the area with the most sufficient oil in the first oil groove 101. The oil entering the first oil groove 101 from the first oil outlet 201a flows along the path of the first oil groove 101 to other areas of the first oil groove 101. By setting the second oil outlet 202a away from the first oil outlet 201a, the second oil outlet 202a is periodically connected to other areas of the first oil groove 101, thereby realizing the oil supply function to other areas of the first oil groove 101, ensuring that the oil amount is sufficient and more uniform. In actual application, the specific position of the second oil outlet 202a can be determined according to actual conditions, which is related to factors such as the extension length of the first oil groove 101 and the position of the first oil outlet 201a. For example, the second oil outlet 202a and the first oil outlet 201a can be respectively arranged on opposite radial sides of the orbiting scroll 200. In this case, it can be suitable for occasions where the first oil groove 101 is an annular groove or an arc-shaped groove, so that the first oil outlet 201a and the second oil outlet 202a can both be smoothly and intermittently connected to the first oil groove 101. Alternatively, the second oil outlet 202a can be arranged in an acute angle region or an obtuse angle region relative to the central axis of the orbiting scroll 200 of the first oil outlet 201a, so long as it can ensure that the second oil outlet 202a and the first oil outlet 201a supply oil to different positions of the first oil groove 101.

[0049] As an example, the second oil outlet 202a and the first oil outlet 201a are respectively arranged on both radial sides of the end surface of the orbiting scroll 200. This can increase the distance between the first oil outlet 201a and the second oil outlet 202a, thereby better supplying oil to the insufficiently lubricated area of ​​the first oil groove 101 and improving the lubrication effect.

[0050] In actual use, the first oil supply channel 201 supplies oil to the first oil tank 101 by pumping oil from the oil pool 510 of the casing 500 to the oil storage chamber of the bracket 300 through the oil suction channel 610 of the crankshaft 600, and then delivering the oil to the first oil tank 101 through the first oil supply channel 201. Correspondingly, the second oil supply channel 202 supplies oil to the first oil tank 101 by pumping oil from the oil storage chamber of the bracket 300 through the second oil outlet 202a. Optionally, the structure of the first oil supply channel 201 and the structure of the second oil supply channel 202 can be the same or different, and the oil circuits of the two can be the same or different. The specific structures of the two are not limited here.

[0051] As an example, the cross-sectional shape of the first oil groove 101 can be determined according to actual conditions, such as arc shape, U-shape, square shape, triangle shape or other special shapes.

[0052] In the scroll compressor of the technical solution of the present invention, the fixed scroll 100 and the movable scroll 200 cooperate to define a compression chamber, the end surface of the fixed scroll 100 is provided with a first oil groove 101, the movable scroll 200 is provided with a first oil supply channel 201 and a second oil supply channel 202, the first oil outlet 201a of the first oil supply channel 201 is periodically connected to the first oil groove 101, by arranging the second oil outlet 202a of the second oil supply channel 202 on the side of the end surface of the movable scroll 200 away from the first oil outlet 201a, and The second oil outlet 202a is periodically connected to the first oil groove 101, so that when the movable scroll 200 moves, the first oil outlet 201a and the second oil outlet 202a can be periodically connected to different positions of the first oil groove 101 respectively, so that oil can be supplied from different positions of the first oil groove 101, which increases the oil supply and makes the oil distribution more uniform, thereby improving the lubrication ability between the end faces of the movable scroll 200 and the fixed scroll 100, reducing the wear between the two, and improving the reliability of the compressor.

[0053] In one embodiment of this application, please refer to Figure 1 as well as Figures 5 to 8 The scroll compressor also includes a bracket 300 arranged below the movable scroll 200, and a high-pressure oil storage chamber A is formed between the bracket 300 and the movable scroll 200; the first oil inlet 201b of the first oil supply channel 201 is connected to the high-pressure oil storage chamber A, and the second oil inlet 202b of the second oil supply channel 202 is periodically connected to the high-pressure oil storage chamber A.

[0054] In this embodiment, the bracket 300 serves to support and mount the orbiting scroll 200 and the fixed scroll 100. It is understood that the orbiting scroll 200 and the fixed scroll 100 cooperate to define a compression chamber. Low-temperature, low-pressure refrigerant enters the compression chamber from the air intake and is compressed to high-temperature, high-pressure refrigerant before being discharged from the air outlet. During the compression process, the fixed scroll 100 and the orbiting scroll 200 are subjected to the separation pressure exerted by the refrigerant on the fixed scroll 100 and the orbiting scroll 200. To prevent the orbiting scroll 100 from separating from the fixed scroll 100, a high-pressure chamber can be provided between the bracket 300 and the orbiting scroll 200 to apply an upward force to the orbiting scroll 100, thereby ensuring the reliability of the cooperation between the orbiting scroll 100 and the fixed scroll 100. In actual application, due to the entrainment of gas and the oil pumping function of the crankshaft 600, a certain amount of lubricating oil will be stored in the high-pressure chamber, thus forming a high-pressure oil storage chamber A. By connecting the first oil inlet 201b of the first oil supply channel 201 to the high-pressure oil storage chamber A, under the action of high pressure, the oil in the high-pressure oil storage chamber A can be smoothly transported through the first oil supply channel 201 to the first oil outlet 201a, thereby supplying oil to the first oil tank 101. Correspondingly, by connecting the second oil inlet 202b of the second oil supply channel 202 to the high-pressure oil storage chamber A, under the action of high pressure, the oil in the high-pressure oil storage chamber A can be smoothly transported through the second oil supply channel 202 to the second oil outlet 202a, thereby supplying oil to the first oil tank 101.

[0055] As an example, the second oil inlet 202b of the second oil supply channel 202 is periodically connected to the high-pressure oil storage chamber A. It can be understood that when the orbiting scroll 200 moves, the second oil outlet 202a is intermittently connected to the first oil groove 101. Since the first oil inlet 201b is always connected to the high-pressure oil storage chamber A, the first oil outlet 201a can supply oil to the oil grooves (high-pressure oil groove and medium-pressure oil groove) on the fixed scroll 100. In this embodiment, the second oil inlet 202b of the second oil supply channel 202 is intermittently connected to the high-pressure oil storage chamber A, so that the second oil supply channel 202 can only smoothly supply oil when the second oil outlet 202a is connected to the first oil groove 101. When the second oil outlet 202a is not connected to the first oil groove 101, no oil will be supplied, thereby avoiding cross-flow between the high-pressure area and the medium-pressure area.

[0056] Specifically, it is defined that during the movement of the orbiting scroll 200, the second oil outlet 202a is in a first state in which the second oil outlet 202a is in communication with the first oil groove 101, and the second oil outlet 202a is in a second state in which the second oil groove 101 is not in communication.

[0057] In the first state, the second oil inlet 202b is connected to the high-pressure oil storage chamber A;

[0058] In the second state, the second oil inlet 202b is not connected to the high-pressure oil storage chamber A.

[0059] See also Figure 1 as well as Figures 5 to 8 This embodiment illustrates the periodic connection between the second oil inlet 202b and the high-pressure oil storage chamber A. It will be appreciated that during compressor operation, the orbiting scroll 200 periodically moves relative to the fixed scroll 100. Within each orbiting scroll 200 movement cycle, the second oil outlet 202a may be either connected or disconnected from the first oil groove 101. Based on the refrigerant pressure distribution, the fixed scroll 100 has a medium-pressure oil groove and a high-pressure oil groove. The first oil groove 101 is a high-pressure oil groove on the end surface of the fixed scroll 100, and the second oil groove 102 is a medium-pressure oil groove on the end surface of the fixed scroll 100. The second oil groove 102 is located on the periphery of the first oil groove 101. The first state is when the second oil outlet 202a is connected to the first oil groove 101, while the second state is when the second oil outlet 202a is disconnected from the first oil groove 101.

[0060] When in the first state, see Figure 5 The second oil outlet 202a is connected to the first oil tank 101. In order to ensure that the second oil outlet 202a supplies oil to the first oil tank 101, the second oil inlet 202b is connected to the high-pressure oil storage chamber A, so that the oil in the high-pressure oil storage chamber A can be smoothly transported to the first oil tank 101 through the second oil supply channel 202, thereby realizing the oil supply function for the first oil tank 101.

[0061] When in the second state, see Figures 6 to 8 The second oil outlet 202a is not connected to the first oil groove 101. The second oil outlet 202a is in the medium pressure area. In order to avoid the impact of air leakage between the high pressure area and the medium pressure area on the matching reliability of the fixed scroll 100 and the movable scroll 200, the second oil inlet 202b is not connected to the high pressure oil storage chamber A. The oil in the high pressure oil storage chamber A will not enter the second oil supply channel 202, so the medium pressure and the high pressure can be avoided from being mixed, and the pressure distribution stability can be ensured.

[0062] In one embodiment, see Figure 1 as well as Figures 5 to 8 The movable scroll 200 includes a movable scroll body 210, a movable scroll tooth 220 provided on the movable scroll body 210, and an eccentric bearing portion 230 for cooperating with the crankshaft 600. The eccentric bearing portion 230 is movably assembled in the high-pressure oil storage chamber A; the second oil supply channel 202 is provided on the movable scroll body 210, and the second oil inlet 202b and the second oil outlet 202a are respectively located on the two side end surfaces of the movable scroll body 210. In the end surface projection of the movable scroll body 210, the second oil inlet 202b is located on the outside of the eccentric bearing portion 230; in the second state, the second oil inlet 202b is blocked by the bracket 300.

[0063] This embodiment illustrates the structural relationship of the second oil supply passage 202 on the orbiting scroll 200. The orbiting scroll 220 is configured to engage with the fixed scroll 110 of the fixed scroll 100 to define a compression chamber. An eccentric bearing 230 is movably mounted within the high-pressure oil storage chamber A and is configured to engage with the eccentric portion of the crankshaft 600, enabling the orbiting scroll 200 to move parallel to the fixed scroll 100 when the crankshaft 600 rotates. The second oil supply passage 202 is disposed within the orbiting scroll body 210. A second oil inlet 202b is located at the end of the orbiting scroll body 210 where the eccentric bearing 230 is located, and a second oil outlet 202a is located at the end of the orbiting scroll body 210 where the orbiting scroll 220 is located.

[0064] In this embodiment, by arranging the second oil inlet 202b on the outside of the eccentric bearing portion 230, the orbiting scroll 200 can drive the second oil inlet 202b to periodically move between the area where the high-pressure oil storage chamber A is located and the area where the end surface of the bracket 300 is located during its movement. In other words, the second oil inlet 202b has a position where it communicates with the high-pressure oil storage chamber A and a position where it is blocked by the bracket 300. In this way, when the orbiting scroll 200 is in the first state, the second oil inlet 202b is connected to the high-pressure oil storage chamber A, and the second oil supply channel 202 can smoothly supply oil to the first oil tank 101. When the orbiting scroll 200 is in the second state, the second oil inlet 202b is blocked by the bracket 300, and the second oil supply channel 202 no longer supplies oil, and the problem of cross-flow does not occur.

[0065] As will be understood, the scroll compressor includes a housing 500, a crankshaft 600 disposed within the housing 500 and connected to the eccentric bearing portion 230, an oil pool 510 disposed at the bottom of the housing 500, and an oil suction passage 610 disposed within the crankshaft 600, communicating with the oil pool 510. The outlet end of the oil suction passage 610 communicates with the high-pressure oil reservoir A. The oil in the high-pressure oil reservoir A can be pumped from the oil pool 510 via the oil suction passage 610 within the crankshaft 600, ensuring a sufficient oil supply.

[0066] Further, see Figures 1 to 5 The first oil supply channel 201 is provided on the movable plate body 210 . The first oil inlet 201 b and the first oil outlet 201 a are respectively located on both side end surfaces of the movable plate body 210 . The first oil inlet 201 b is communicated with the inner cavity of the eccentric bearing portion 230 .

[0067] This embodiment illustrates the structural relationship of the first oil supply passage 201 on the orbiting scroll 200. The first oil inlet 201b is located at the end of the orbiting scroll body 210 where the eccentric bearing portion 230 is disposed, and the first oil outlet 201a is located at the end of the orbiting scroll body 210 where the orbiting scroll 220 is disposed. It will be appreciated that the eccentric bearing portion 230 is located in a high-pressure region and is capable of moving within the high-pressure oil reservoir A. By locating the first oil inlet 201b inside the eccentric bearing portion 230, the first oil inlet 201b remains connected to the high-pressure region regardless of the position of the orbiting scroll 200. Consequently, regardless of whether the first oil outlet 201a is in communication with the first oil groove 101 or the second oil groove 102, the first oil supply passage 201 can supply oil to the corresponding oil groove, thereby ensuring lubrication of the end surfaces of the fixed scroll 100 and the orbiting scroll 200.

[0068] In one embodiment of the present application, the second oil supply passage 202 and the first oil supply passage 201 are respectively disposed on two opposite sides of the eccentric bearing portion 230 .

[0069] In this embodiment, by arranging the second oil supply channel 202 and the first oil supply channel 201 on opposite sides of the eccentric bearing portion 230, respectively, the first oil outlet 201a and the second oil outlet 202a are positioned as far as possible on opposite sides of the end surface of the movable plate body 210. In this way, the distance between the first oil outlet 201a and the second oil outlet 202a can be increased, thereby better supplying oil to the insufficiently lubricated area of ​​the first oil groove 101 and improving the lubrication effect.

[0070] As an example, the first oil supply channel 201 is arranged to extend radially along the movable plate body 230, which effectively shortens the path of the first oil supply channel 201, improves the flow efficiency of the lubricating oil, and enhances the oil supply efficiency for the first oil groove 101, which is beneficial to improving the reliability of the scroll compressor.

[0071] Accordingly, the second oil supply channel 202 is extended radially along the movable plate body 230, which effectively shortens the path of the second oil supply channel 202, improves the flow efficiency of the lubricating oil, and enhances the oil supply efficiency for the first oil groove 101, which is beneficial to improving the reliability of the scroll compressor.

[0072] As an example, see Figure 1, a throttling device 700 can be set in the first oil supply channel 201 to prevent excessive oil volume and excessive oil flow rate. Correspondingly, a throttling device can also be set in the second oil supply channel 202 to prevent excessive oil volume and excessive oil flow rate. Alternatively, the throttling device 700 can be omitted, and the throttling purpose can be achieved by adjusting the area of ​​the oil inlet and the oil outlet. For details, please refer to the throttling method of the conventional oil supply channel, which will not be elaborated here. It should be noted that in order to prevent the second oil supply channel 202 from being pressurized externally with the movable scroll plate 200, an oil plug or a throttling device can be set in the second oil supply channel 202 near the outer edge of the movable plate body 230.

[0073] In one embodiment of the present application, a back pressure chamber B is further formed between the bracket 300 and the movable scroll 200, and the back pressure chamber B is arranged on the outer periphery of the high-pressure oil storage chamber A; the bracket 300 is provided with an annular groove 301, and a seal 400 is provided in the annular groove 301 for isolating the back pressure chamber B from the high-pressure oil storage chamber A, and the seal 400 is clamped between the movable scroll 200 and the bracket 300.

[0074] As can be understood from the foregoing embodiment, the high-pressure oil storage chamber A generates upward pressure on the orbiting scroll 200. The high-pressure oil storage chamber A is located in the middle of the orbiting scroll 200. To ensure better fit between the orbiting scroll 200 and the fixed scroll 100, a back-pressure chamber B is formed between the bracket 300 and the orbiting scroll 200. This back-pressure chamber B can generate an upward force on the outer edge of the orbiting scroll 200. At the same time, considering that the pressure on the orbiting scroll 200 cannot be too high, as excessive pressure may result in excessive pressure between the orbiting scroll 200 and the fixed scroll 100, the back-pressure chamber B is a medium-pressure chamber. In this embodiment, an annular groove 301 is provided on the bracket 300, and a seal 400 is provided within the annular groove 301. The seal 400 is used to seal against the bracket 300 and the orbiting scroll body 230, respectively, to isolate the back-pressure chamber B from the high-pressure oil storage chamber A.

[0075] As an example, the second oil inlet 202b can be set close to the seal 400. When the orbiting scroll 200 drives the second oil outlet 202a to just leave the first oil groove 101, the second oil inlet 202b will be blocked by the seal 400 to ensure that high pressure and low pressure do not mix.

[0076] Optionally, the sealing member 400 may be a PTFE (polytetrafluoroethylene) sealing ring.

[0077] In one embodiment of this application, please refer to Figures 1 to 4The static scroll plate 100 has a static scroll tooth 110, and the first oil groove 101 is annularly surrounding the outer periphery of the static scroll tooth 110; a second oil groove 102 is also provided on the end surface of the static scroll plate 100, and the second oil groove 102 surrounds the outer periphery of the first oil groove 101; the first oil groove 101 and the second oil groove 102 are periodically connected to the first oil outlet 201a respectively.

[0078] As can be understood, the fixed scroll 110 and the orbiting scroll 220 mesh with each other to define a compression chamber. Based on the refrigerant pressure distribution, the first oil groove 101 near the fixed scroll 110 is a high-pressure oil groove, while the second oil groove 102 away from the fixed scroll 110 is a medium-pressure oil groove. The first and second oil grooves 101, 102 are periodically connected to the first oil outlet 201a, respectively, to ensure the supply of oil within the first and second oil grooves 101, 102.

[0079] As an example, a complete movement cycle of the orbiting scroll 200 relative to the fixed scroll 100 is used as an example for description:

[0080] like Figure 5 As shown, the movable scroll 200 is in the first state, the second oil outlet 202a of the second oil supply channel 202 is connected to the first oil groove 101, and the second oil inlet 202b is connected to the high-pressure oil storage chamber A. At this time, the oil in the high-pressure oil storage chamber A will enter the first oil groove 101 through the second oil supply channel 202 to achieve oil supply and lubrication.

[0081] The orbiting scroll 200 continues to move until Figure 6 In the position shown, the orbiting scroll 200 is in the second state, the second oil outlet 202a is not connected to the first oil groove 101, and the second oil inlet 202b is blocked by the seal 400. At this time, the second oil supply channel 202 does not supply oil.

[0082] The orbiting scroll 200 continues to move until Figure 7 In the position shown, the second oil outlet 202a is connected to the second oil tank 102, but the second oil inlet 202b is blocked by the bracket 300. At this time, the second oil supply channel 202 will not supply oil, and there will be no air cross-talk between the high-pressure area and the low-pressure area.

[0083] The orbiting scroll 200 continues to move until Figure 8 In the position shown, the orbiting scroll 200 is at the farthest position in this direction, the second oil outlet 202a is at the medium pressure position, the second oil inlet 202b is blocked by the bracket 300, the second oil supply channel 202 will not supply oil, and there will be no air cross-talk between the high-pressure area and the low-pressure area.

[0084] The subsequent movable scroll 200 continues to move back to Figure 5 The position shown moves repeatedly.

[0085] In some other embodiments of the present application, the orbiting scroll 200 is provided with two second oil supply channels 202 , and the second oil outlets 202 a of the two second oil supply channels 202 are spaced apart from the first oil outlet 201 a and distributed on the end surface of the orbiting scroll 200 .

[0086] It is understood that the number of second oil supply passages 202 is not limited to one, and can be determined according to actual conditions, such as one, two, three, four, or five. For example, two second oil supply passages 202 and one first oil supply passage 201 can be provided. By distributing the two second oil outlets 202a and the first oil outlet 201a on the end surface of the orbiting scroll 200 at intervals, the oil supply function to the first oil groove 101 is achieved.

[0087] In one embodiment of the present application, the diameter of the second oil outlet 202 a is the same as the width of the first oil groove 101 .

[0088] In this embodiment, by making the diameter of the second oil outlet 202a the same as the width of the first oil groove 101, sealing performance and excellent lubrication efficiency are ensured, while reducing processing costs.

[0089] The present invention further provides a refrigeration device including a scroll compressor. The specific structure of the scroll compressor is as described above. Since the present refrigeration device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which are not described in detail here. Optionally, the refrigeration device includes a refrigerator, an air conditioner, or a cold chain vehicle.

[0090] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention description and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A scroll compressor, characterized in that: include: a fixed scroll plate, wherein a first oil groove is provided on an end surface of the fixed scroll plate; and an orbiting scroll rotatably connected to the fixed scroll and cooperating with the fixed scroll to define a compression chamber; The orbiting scroll is provided with a first oil supply channel and a second oil supply channel. The first oil supply channel is provided with a first oil outlet on the end surface of the orbiting scroll, and the first oil outlet is periodically connected to the first oil groove; the second oil supply channel is provided with a second oil outlet on the end surface of the orbiting scroll, and the second oil outlet is periodically connected to the first oil groove; Wherein, the second oil outlet is located on a side of the end surface of the orbiting scroll away from the first oil outlet; The scroll compressor further comprises a bracket provided below the movable scroll, wherein a high-pressure oil storage chamber is formed between the bracket and the movable scroll; The first oil inlet of the first oil supply channel is in communication with the high-pressure oil storage chamber, and the second oil inlet of the second oil supply channel is in periodic communication with the high-pressure oil storage chamber; The orbiting scroll is defined as having a first state in which the second oil outlet is connected to the first oil groove and a second state in which the second oil outlet is not connected to the first oil groove during movement; In the first state, the second oil inlet is connected to the high-pressure oil storage chamber; In the second state, the second oil inlet is not connected to the high-pressure oil storage chamber; The movable scroll includes a movable scroll body, and the first oil supply passage extends in a radial direction of the movable scroll body.

2. The scroll compressor according to claim 1, wherein The movable scroll includes a movable scroll tooth provided on the movable scroll body and an eccentric bearing portion for cooperating with the crankshaft, and the eccentric bearing portion is movably assembled in the high-pressure oil storage chamber; The second oil supply channel is arranged on the movable plate body, and the second oil inlet and the second oil outlet are respectively located on the two side end surfaces of the movable plate body. On the end surface projection of the movable plate body, the second oil inlet is located on the outside of the eccentric bearing part; in the second state, the second oil inlet is blocked by the bracket.

3. The scroll compressor according to claim 2, wherein: The first oil inlet and the first oil outlet are respectively located on both side end surfaces of the movable plate body, and the first oil inlet is communicated with the inner cavity of the eccentric bearing portion.

4. The scroll compressor according to claim 3, wherein: The second oil supply passage and the first oil supply passage are respectively arranged on opposite sides of the eccentric bearing portion.

5. The scroll compressor according to claim 2, wherein: The scroll compressor also includes a casing, a crankshaft arranged in the casing and connected to the eccentric bearing portion, an oil pool is provided at the bottom of the casing, an oil suction channel connected to the oil pool is provided in the crankshaft, and an outlet end of the oil suction channel is connected to the high-pressure oil storage chamber.

6. The scroll compressor according to any one of claims 1 to 5, wherein: A back pressure chamber is also formed between the bracket and the movable scroll, and the back pressure chamber is arranged on the outer periphery of the high-pressure oil storage chamber; the bracket is provided with an annular groove, and a seal for isolating the back pressure chamber from the high-pressure oil storage chamber is provided in the annular groove, and the seal is clamped between the movable scroll and the bracket.

7. The scroll compressor according to any one of claims 1 to 5, wherein: The second oil outlet and the first oil outlet are respectively arranged on two radial sides of the end surface of the orbiting scroll.

8. The scroll compressor according to any one of claims 1 to 5, wherein: The movable scroll is provided with two second oil supply passages, and the second oil outlets of the two second oil supply passages are spaced apart from the first oil outlet and are distributed on the end surface of the movable scroll.

9. The scroll compressor according to any one of claims 1 to 5, wherein: The diameter of the second oil outlet is the same as the width of the first oil groove.

10. The scroll compressor according to any one of claims 1 to 5, wherein: The fixed scroll plate has a fixed scroll tooth, and the first oil groove is annularly surrounding the outer periphery of the fixed scroll tooth; A second oil groove is further provided on the end surface of the fixed scroll plate, and the second oil groove surrounds the outer circumference of the first oil groove; the first oil groove and the second oil groove are periodically connected to the first oil outlet respectively.

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

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