Oil supply structure and compressor

Abstract

The invention provides an oil supply structure and a compressor, an oil supply channel comprises a counter weight directly or indirectly installed on a crankshaft, a longitudinal channel used for pumping lubricating oil is arranged in the crankshaft, at least one of the counter weight and the crankshaft is provided with or connected with an oil supply channel, the oil supply channel is communicated with the longitudinal channel, and the longitudinal channel is communicated with the counter weight. An outlet of the oil supply channel is formed in the area not provided with the balance weight part, and the outlet of the oil supply channel is constructed to be capable of directly supplying oil to a movable vortex end plate or a thrust face. The outlet of the oil supply channel is formed in the non-counterweight part area, so that lubricating oil can be supplied through the oil supply channel besides being collided with the counterweight part for oil supply, the oil supply area provided by collision oil supply of the counterweight part is different from the oil supply area provided by oil supply of the oil supply channel, the lubricating area of the thrust surface is wider, and the service life of the thrust surface is prolonged. Lubricating oil is easier to enter the opening side.

Description

Technical Field

[0001] The invention relates to an oil supply structure in a compressor, in particular to an oil supply structure and a compressor. Background Art

[0002] Scroll compressors are widely used in refrigeration, air conditioning, heat pumps and other fields due to their high efficiency, small size, light weight and smooth operation.

[0003] Patent No. CN119288869A discloses a balancing weight and a scroll compressor. This solution can achieve efficient oil supply to the thrust surface, but it also has the following defects:

[0004] 1. Patent No. CN119288869A requires machining an annular groove on the inner ring of the counterweight and a specially designed closed oil supply channel on the balance block, which is not conducive to space layout and has high manufacturing costs;

[0005] 2. The thrust surface lubrication in the patent CN119288869A almost entirely relies on the lubricating oil entering the upward channel in the counterweight part, while according to the attached Figure 1 According to the results of simulation calculations in , the contact between the frame and the orbiting scroll in the compressor is not completely fitted, and the contact state of the thrust surface at different positions is different. The thrust surface can be divided into a contact side 199 and an opening side 198. When the compressor is working, the contact side 199 and the opening side 198 will rotate synchronously with the crankshaft. In the CN119288869A solution, the upward channel in the counterweight part is located near the contact side 199, which means that even if the lubricating oil is sprayed onto the thrust surface through the upward channel, its lubrication effect is still poor.

[0006] In addition, traditional compressors rely on the collision of lubricating oil with the counterweight for lubrication, and there is also the problem that the lubricating oil splashing area is basically fixed, which limits the lubrication distribution on the thrust surface. Summary of the Invention

[0007] The object of the present invention is to provide an oil supply structure to solve the problems raised in the above background technology.

[0008] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is an oil supply structure, including a counterweight directly or indirectly installed on the crankshaft, a longitudinal channel for pumping lubricating oil is provided in the crankshaft, at least one of the counterweight and the crankshaft is provided with or connected to an oil supply channel, the oil supply channel is communicated with the longitudinal channel, the outlet of the oil supply channel is provided in an area other than the counterweight part, and the outlet of the oil supply channel is constructed to be able to directly supply oil to the movable scroll end plate or the thrust surface.

[0009] Furthermore, the thrust surface includes a contact side and an opening side, and the outlet of the oil supply channel is located on the counterweight and / or the crankshaft near the opening side of the thrust surface.

[0010] Furthermore, the oil supply passage is provided in the crankshaft, one end of the oil supply passage is communicated with the longitudinal passage, and the other end of the oil supply passage is configured to face the movable scroll end plate or the thrust surface.

[0011] Furthermore, the oil supply passage is arranged in the crankshaft and the counterweight, the crankshaft is provided with the longitudinal passage for pumping lubricating oil, the crankshaft and the counterweight both have flow paths, the longitudinal passage is connected with the flow path of the crankshaft, the flow path of the crankshaft is connected with the flow path of the counterweight, one end of the counterweight flow path is constructed to face the movable scroll end plate, or the thrust surface, and the flow path of the crankshaft and the flow path of the counterweight constitute the oil supply passage.

[0012] Furthermore, the flow path in the crankshaft and the flow path in the counterweight are both hole-shaped flow paths.

[0013] Furthermore, the flow path in the counterweight is straight, or the flow path in the counterweight is L-shaped.

[0014] Further, when the flow path in the counterweight is straight, the flow path in the counterweight is inclined.

[0015] Furthermore, the counterweight includes a ring portion, the oil supply channel is provided in the crankshaft and on the counterweight, the crankshaft is provided with the longitudinal channel for pumping lubricating oil, the crankshaft is provided with a flow path, the longitudinal channel is connected to the flow path, the flow path can transport the lubricating oil to the upper surface of the ring portion, the ring portion is provided with an oil guide slope, the oil guide slope allows at least part of the lubricating oil on the upper surface of the ring portion to be transported to the movable scroll end plate, or the thrust surface, the flow path and the oil guide slope constitute the oil supply channel.

[0016] Furthermore, blocking surfaces are provided on both sides of the oil guiding inclined surface on the upper surface of the ring portion, and the blocking surfaces and the oil guiding inclined surface are combined to form a guide groove.

[0017] Furthermore, an oil pipe is provided on or installed on the crankshaft, and a mounting hole connecting the longitudinal channel and the internal cavity of the compressor is correspondingly opened in the crankshaft. The crankshaft is connected to the oil pipe through the mounting hole, and one end of the oil pipe is constructed to face the movable scroll end plate or the thrust surface. The hollow area in the oil pipe constitutes the oil supply channel.

[0018] Furthermore, the mounting holes are arranged horizontally or obliquely.

[0019] Furthermore, the mounting holes are arranged obliquely, and the oil pipe is a straight pipe.

[0020] Furthermore, the mounting holes are arranged horizontally, and the oil pipe is a curved pipe.

[0021] Furthermore, an oil pipe is provided on or installed on the counterweight, the longitudinal channel for pumping lubricating oil is provided in the crankshaft, a flow path is provided in the crankshaft, the longitudinal channel is communicated with the flow path in the crankshaft, the mounting hole is provided in the counterweight, the flow path in the crankshaft is communicated with the mounting hole in the counterweight, the counterweight is connected to the oil pipe through the mounting hole, one end of the oil pipe is constructed to face the movable scroll end plate or the thrust surface, the flow path in the crankshaft and the hollow area in the oil pipe constitute the oil supply channel.

[0022] Furthermore, the mounting hole is a straight hole that passes through the ring portion, and the oil pipe is a curved pipe.

[0023] Furthermore, the mounting hole is L-shaped, and the oil pipe is a straight pipe.

[0024] Furthermore, the mounting hole is a three-way hole, the oil pipe is a straight pipe, and one end of the oil pipe inserted into the mounting hole is pointed. When the oil pipe and the mounting hole are installed, the oil pipe can block one end of the mounting hole.

[0025] Furthermore, in the connection between the oil pipe and the counterweight or the crankshaft, the oil pipe and the counterweight or the crankshaft are integrated, or the oil pipe and the counterweight or the crankshaft are detachably connected.

[0026] Furthermore, the detachable connection includes a plug-in connection or a threaded connection.

[0027] Furthermore, integration is achieved through powder metallurgy, welding, powder metallurgy plus prefabricated tubes, or interference fit.

[0028] Furthermore, a connection position between the oil supply channel and the counterweight and / or the crankshaft is close to one side of the eccentric shaft on the crankshaft.

[0029] Furthermore, it also includes an annular groove, which is provided on the crankshaft and / or the counterweight, and the annular groove is connected to the longitudinal channel and the oil supply channel.

[0030] Furthermore, the inner diameter of the oil supply channel is 1 to 6 mm.

[0031] Furthermore, the inner diameter of the oil supply channel is 2 to 4 mm.

[0032] The present invention also provides a compressor comprising the above-mentioned oil supply structure.

[0033] In summary, the beneficial effects of the present invention are as follows: by arranging the outlet of the oil supply channel in the non-counterweight area, the lubricating oil can be supplied through the oil supply channel in addition to the oil supply by collision with the counterweight, and the oil supply area provided by the oil supply by collision with the counterweight is different from that provided by the oil supply channel, so that the lubrication area of ​​the thrust surface is wider and the lubricating oil can more easily enter the opening side. Compared with the assembled upward channel structure disclosed in patent No. CN119288869A, the present invention can achieve an efficient upward oil supply effect by arranging the oil supply channel on the side of the eccentric shaft without setting an annular channel. The technical solution of the present invention only needs to open through holes in the crankshaft and the counterweight respectively on the basis of the existing structure, and install oil pipes to achieve the above functions. The structure is simplified, the processing is convenient, and the manufacturing cost is lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only one embodiment of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0035] Figure 1 This is an exploded view of the main components of the compressor thrust surface;

[0036] Figure 2 This is a simulation diagram of the thrust surface contact situation;

[0037] Figure 3 This is a schematic diagram of the oil supply structure of a traditional compressor and a partial enlarged diagram;

[0038] Figure 4 It is a method of setting up an oil circuit inside the crankshaft;

[0039] Figure 5 It is a method of setting up an oil circuit inside the crankshaft;

[0040] Figure 6 It is a method of setting up an oil circuit inside the counterweight;

[0041] Figure 7 It is a method of setting up an oil circuit inside the counterweight;

[0042] Figure 8 It is a method of setting up the oil supply channel by combining the crankshaft and the counterweight;

[0043] Figure 9 It is a way to install the oil pipe on the crankshaft;

[0044] Figure 10 It is a way to install the oil pipe on the crankshaft;

[0045] Figure 11 It is a way of installing the oil pipe with a counterweight;

[0046] Figure 12 yes Figure 11 sectional view of

[0047] Figure 13 It is a way of installing the oil pipe with a counterweight;

[0048] Figure 14 yes Figure 13 sectional view of

[0049] Figure 15 It is a way of installing the oil pipe with a counterweight;

[0050] Figure 16 yes Figure 15 sectional view of

[0051] Figure 17 There are threaded oil pipes and non-threaded oil pipes;

[0052] Figure 18 It is a method of installing counterweights and oil pipes on the crankshaft;

[0053] Figure 19 yes Figure 18 Oil circuit simulation diagram of the technical solution in the middle;

[0054] Figure 20 yes Figure 18 Physical simulation test of technical solutions;

[0055] Figure 21 This is a schematic diagram of the installation of the inclined oil pipe on the counterweight;

[0056] Figure 22 It is a schematic diagram of the assembly of a crankshaft with an annular groove and a counterweight. DETAILED DESCRIPTION

[0057] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the embodiments of the present invention are further described in detail below with reference to the accompanying drawings. It should be pointed out that the embodiments are only detailed explanations of the present invention and should not be regarded as limitations of the present invention. All features disclosed in the embodiments of the present invention, or all steps in the methods or processes disclosed, except for mutually exclusive features and / or steps, can be combined in any way.

[0058] In order for those skilled in the art to better understand the technical improvements of the present invention, the oil supply structure of a conventional compressor is briefly described first: the oil supply structure includes a crankshaft 10 and a counterweight 20, the counterweight 20 including a counterweight portion 30 and an annular portion 21, the crankshaft 10 having an eccentric shaft 11, and one function of the counterweight portion 30 is to balance the inertial force generated when the eccentric shaft 11 rotates. Therefore, the counterweight portion 30 is usually arranged on the side of the crankshaft 10 opposite to (away from) the eccentric shaft 11. When the compressor is started, the lubricating oil is pumped up from the longitudinal channel 80 of the crankshaft 10, and the pumped lubricating oil falls onto the upper surface of the annular portion 21 of the counterweight 20 through the first gap 96 between the eccentric shaft 11 and the orbiting scroll hub 98. The upper surface of the annular portion 21 of the counterweight 20 receives the lubricating oil and collides with the rotating counterweight 20, thereby splashing onto the orbiting scroll end plate or thrust surface. The lubricating oil needs to enter the upper surface of the ring portion 21 of the counterweight 20 through the longitudinal channel 80 and the first gap 96 in sequence, and then collide with the counterweight 20 to complete the splashing. This oil supply method is slow to oil and the amount of oil supplied is small, which will increase the risk of thrust surface wear.

[0059] Example 1.

[0060] In order to solve the technical problem of poor lubrication effect in the background technology, this embodiment provides an oil supply structure, including a counterweight 20 directly or indirectly mounted on the crankshaft 10, a longitudinal channel 80 for pumping lubricating oil is provided in the crankshaft 10, and at least one of the counterweight 20 and the crankshaft 10 is provided with or connected to an oil supply channel, the oil supply channel is connected to the longitudinal channel 80, and the outlet of the oil supply channel is provided in the non-counterweight area, which is other areas outside the counterweight area. The oil supply channel is constructed to be able to directly supply oil to the movable scroll end plate or the thrust surface. The so-called direct oil supply means that the oil sprayed from the oil supply channel outlet can directly enter the movable scroll end plate or the thrust surface. This method has the highest oil supply efficiency. By setting the outlet of the oil supply channel in the non-counterweight area, the lubricating oil can be supplied through the oil supply channel in addition to the oil supply by collision with the counterweight part 30, and the oil supply areas that can be provided by the oil supply by collision with the counterweight part 30 and the oil supply through the oil supply channel are different, so that the lubrication area of ​​the thrust surface is wider and the lubricating oil can more easily enter the opening side 198.

[0061] Preferably, in order to allow more lubricating oil to enter the opening side 198. The outlet of the oil supply channel is located in the area of ​​the opening side 198 of the thrust surface. At this time, the flow rate (aperture) of the oil supply channel can be controlled so that, except for the lubricating oil that lubricates the movable scroll hub area, the rest of the lubricating oil is supplied to the movable scroll end plate or the thrust surface through the oil supply channel. In the oil supply structure under this structure, the lubricating oil no longer needs to flow through the movable scroll hub position, but is directly supplied to the rotating end plate or the thrust surface through the oil supply channel, which can achieve an extremely short oil supply time. At the same time, there is no temperature rise through the bearing, the oil temperature is lower, and the lubrication effect is better; in addition, the outlet of the oil supply channel directly supplies oil to the opening side 198 accurately, which is conducive to the formation of an oil wedge, thereby generating a fluid dynamic lubrication effect and a better lubrication effect. As for how to realize that the outlet of the oil supply channel is located in the area of ​​the opening side 198 of the thrust surface, when the basic design of the counterweight is completed, the thrust surface contact of the compressor can be simulated and calculated to obtain the attached Figure 2 The thrust surface contact simulation data in is used, and the outlet position of the oil supply channel is set according to the position of the opening side 198 relative to the crankshaft and the counterweight.

[0062] It should be noted that when the outlet position of the oil supply channel is determined, it does not mean that the connection position of the oil supply channel with the counterweight 20 and / or the crankshaft 10 is determined, or in other words, the position of the oil supply channel on the counterweight 20 and / or the crankshaft 10 is determined. Because the oil supply channel is not necessarily installed vertically, it may also be installed at an angle (for example, with Figure 21 Therefore, there is no relationship between the outlet position of the oil supply passage and the connection position of the oil supply passage on the counterweight 20 and / or the crankshaft 10, or the location of the oil supply passage on the counterweight 20 and / or the crankshaft 10.

[0063] Regarding how to set up the oil supply channel, the present invention provides multiple methods:

[0064] Method 1: The oil supply channel is provided in the crankshaft, and a longitudinal channel for pumping lubricating oil is provided in the crankshaft. One end of the oil supply channel is connected to the longitudinal channel, and the other end of the oil supply channel is constructed to face the movable scroll end plate or the thrust surface. Figure 4 The crankshaft 10 is provided with a longitudinal passage 80 and an oil supply passage 106. One end of the oil supply passage 106 is connected to the longitudinal passage 80, and the other end of the oil supply passage 106 is configured to face the orbiting scroll end plate or thrust surface. When oil is introduced into the longitudinal passage 80, some lubricating oil enters the oil supply passage 106 and is directly sprayed onto the orbiting scroll end plate or thrust surface.

[0065] Method 2: The oil supply channel is arranged in the crankshaft and the counterweight. A longitudinal channel for pumping lubricating oil is provided in the crankshaft. The crankshaft and the counterweight both have flow paths. The longitudinal channel is connected to the flow path of the crankshaft, and the flow path of the crankshaft is connected to the flow path of the counterweight. One end of the counterweight flow path is constructed to face the movable scroll end plate or the thrust surface. The flow path of the crankshaft and the flow path of the counterweight constitute the oil supply channel.

[0066] In a specific embodiment, referring to the attached Figure 5 The crankshaft 10 is provided with a first flow path 107, which is communicated with the longitudinal channel 80. Figure 6 A second flow path 108 is provided in the annular portion 21 of the counterweight 20. One end of the second flow path 108 is constructed to face the movable scroll end plate or the thrust surface. When the crankshaft 10 and the counterweight 20 are assembled, the first flow path 107 is connected to the second flow path 108. When oil is introduced into the longitudinal channel 80, part of the lubricating oil will enter the first flow path 107 and flow into the second flow path 108, and finally be directly sprayed onto the movable scroll end plate or the thrust surface. The first flow path 107 in the crankshaft 10 and the second flow path 108 in the counterweight 20 constitute an oil supply channel. In this embodiment, the first flow path 107 and the second flow path 108 are both hole-shaped flow paths.

[0067] Preferably, refer to the attached Figure 6 , the second flow path 108 is straight. Further, the second flow path 108 is inclined.

[0068] Preferably, refer to the attached Figure 7 The second flow path 108 is L-shaped. Regarding how to form the L-shaped second flow path 108, a vertical blind hole and a horizontal blind hole can be machined in the counterweight 20, and the two blind holes can be connected at the same time; alternatively, a vertical blind hole and a horizontal through hole can be machined in the counterweight 20, and the blind hole and the through hole can be connected at the same time, and the through hole on the outer surface of the ring portion 21 can be blocked with a wire plug 109.

[0069] Method three: The oil supply channel is arranged in the crankshaft and on the counterweight. A longitudinal channel for pumping lubricating oil is provided in the crankshaft. A flow path is provided in the crankshaft. The longitudinal channel is connected to the flow path of the crankshaft. The flow path can transport the lubricating oil to the upper surface of the ring portion. An oil guide slope is provided on the ring portion of the counterweight. The oil guide slope allows at least part of the lubricating oil on the upper surface of the ring portion to be transported to the movable scroll end plate or the thrust surface. The flow path of the crankshaft and the oil guide slope on the counterweight constitute the oil supply channel.

[0070] In a specific embodiment, a first flow path 107 is provided in the crankshaft 10, and one end of the first flow path 107 is connected to the longitudinal channel 80. Figure 8The ring portion 21 of the counterweight 20 is provided with an oil guide slope 130. The oil guide slope 130 allows the lubricating oil on the upper surface of the ring portion 21 to be guided to the orbiting scroll end plate or the thrust surface. When the crankshaft 10 and the counterweight 20 are assembled, it is necessary to ensure that the first flow path 107 is not blocked by the ring portion 21, so that the oil flowing out of the first flow path 107 can enter the upper surface of the ring portion 21. When oil is introduced into the longitudinal channel 80, the lubricating oil will enter the first flow path 107 and flow to the upper surface of the ring portion 21. At least part of the lubricating oil is guided by the oil guide slope 130 to the orbiting scroll end plate or the thrust surface. The first flow path 107 in the crankshaft 10 and the oil guide slope on the counterweight 20 constitute an oil supply channel.

[0071] Preferably, blocking surfaces 114 are further provided on the upper surface of the ring portion 21 on both sides of the oil guide slope. The blocking surfaces 114 and the oil guide slope 130 form guide grooves that help guide as much lubricating oil as possible from the upper surface of the ring portion 21 to the orbiting scroll end plate or thrust surface. Furthermore, the blocking surfaces 114 extend to the position of the first flow path 107.

[0072] In this embodiment, the first flow path 107 is a hole-shaped flow path.

[0073] Method 4: An oil pipe is provided or installed on the crankshaft, and a mounting hole is opened in the crankshaft to connect the longitudinal channel and the internal cavity of the compressor. The crankshaft is connected to the oil pipe through the mounting hole. One end of the oil pipe is constructed to face the end plate of the movable scroll or the thrust surface. The hollow area in the oil pipe constitutes the oil supply channel. For details, refer to the attached Figure 9 A first mounting hole 111 is correspondingly formed in the crankshaft 10, connecting the longitudinal passage 80 with the internal cavity of the compressor. The crankshaft 10 is connected to an oil pipe 110 through the first mounting hole 111. One end of the oil pipe 110 is configured to face the orbiting scroll end plate or thrust surface. The hollow area within the oil pipe 110 constitutes an oil supply passage. When oil enters the longitudinal passage 80, some of the lubricating oil is sprayed through the oil pipe 110 onto the orbiting scroll end plate or thrust surface.

[0074] Preferably, the first mounting hole 111 can be arranged horizontally or tilted. Figure 9 , the first mounting hole 111 is arranged obliquely, and the oil pipe 110 is a straight pipe. Figure 10 The first mounting hole 111 is arranged horizontally, and the oil pipe 110 is a bent pipe, such as an L-shaped pipe. The L-shaped oil pipe can be obtained by bending or other processing methods. The bent pipe can be pre-bent or bent after installation.

[0075] Method 5: An oil pipe is provided or installed on the counterweight, a longitudinal channel for pumping lubricating oil is provided in the crankshaft, a flow path is provided in the crankshaft, the longitudinal channel is connected to the flow path in the crankshaft, a mounting hole is provided in the counterweight, the flow path in the crankshaft is connected to the mounting hole in the counterweight, the counterweight is connected to the oil pipe through the mounting hole, one end of the oil pipe is constructed to face the movable scroll end plate or the thrust surface, the flow path in the crankshaft and the hollow area in the oil pipe constitute the oil supply channel. For details, refer to the attached Figure 5 The crankshaft 10 is provided with a first flow path 107, which is communicated with the longitudinal channel 80. Figure 11 A second mounting hole 112 is provided in the annular portion 21 of the counterweight 20. When the crankshaft 10 and the counterweight 20 are assembled, the first flow path 107 is connected to the second mounting hole 112. The oil pipe 110 is installed in the second mounting hole 112. One end of the oil pipe 110 is constructed to face the movable scroll end plate or the thrust surface. The first flow path 107 in the crankshaft 10 and the hollow area in the oil pipe constitute an oil supply channel. When oil is introduced into the longitudinal channel 80, part of the lubricating oil will enter the first flow path 107 and will eventually be sprayed onto the movable scroll end plate or the thrust surface through the oil pipe 110. In method four, the first flow path 107 is a hole-shaped flow path.

[0076] In a specific embodiment, referring to the attached Figure 11 、 12 The second mounting hole 112 is a straight hole that passes through the ring portion 21 , and the oil pipe 110 is a curved pipe, such as an L-shape.

[0077] In a specific embodiment, referring to the attached Figure 13 、 14 The second mounting hole 112 is L-shaped, and the oil pipe 110 is a straight pipe. The L-shaped second mounting hole 112 can be formed by first machining a vertical blind hole and a horizontal blind hole in the counterweight 20, and then connecting the two blind holes. Alternatively, a vertical blind hole and a horizontal through hole can be machined in the counterweight 20, and then connecting the blind hole and the through hole. The through hole on the outer surface of the ring portion 21 can be blocked with a screw plug 109.

[0078] In a specific embodiment, referring to the attached Figure 15 、 16 The second mounting hole 112 is a three-way hole, the oil pipe 110 is a straight pipe, and the end of the oil pipe 110 inserted into the second mounting hole 112 is pointed. When the oil pipe 110 and the second mounting hole 112 are installed, the oil pipe 110 can block one end of the second mounting hole 112. Figure 16 shown.

[0079] Other methods: freely combine any of the methods 1 to 5. Since there are too many free combination methods, the present invention does not list them one by one.

[0080] Preferably, in the fourth and fifth methods, the oil pipe 110 and the counterweight 20 or the crankshaft 10 are connected in an integrated manner, or the oil pipe 110 and the counterweight 20 or the crankshaft 10 are detachably connected. The detachable connection includes plug-in connection, threaded connection or other conventional connection methods, such as the attached Figure 17 Integration can be achieved through powder metallurgy, welding, powder metallurgy + prefabricated tubes, or interference fit.

[0081] In order to allow the lubricating oil to be supplied to the movable scroll end plate or the thrust surface more quickly and comprehensively, the connection position of the oil supply channel and the counterweight 20 and / or the crankshaft 10 is preferably close to one side of the eccentric shaft 11 on the crankshaft, such as in the attached Figure 18 In the solution, the rotation center of the crankshaft 10 is the rotation axis A, and the oil supply channel formed by the first flow path 107 and the hollow area inside the oil pipe 110 is located on the side of the counterweight 20 close to the eccentric shaft 11. This technical solution can bring two advantages:

[0082] 1. Compared with the oil supply channel located on the side of the counterweight 30, the oil supply channel close to the eccentric shaft 11 is farther away from the rotation axis A. Therefore, the oil supply channel located on the side of the eccentric shaft 11 can provide a greater centrifugal force to the lubricating oil in the channel, making it easier for the lubricating oil to be sprayed onto the movable scroll end plate or the thrust surface. Figure 19 , for attachment Figure 18 The scheme in the simulation was simulated, and the simulation result was that the oil pipe can spray the oil directly onto the thrust surface. At the same time, the applicant also conducted a physical simulation test. The physical simulation test was: without installing the movable scroll disk, the top of the longitudinal channel was sealed with an oil plug (the seal here completely simulates the characteristics and flow channel of the movable scroll hub during the actual operation of the compressor, and will not affect the experimental results) to simulate the movable scroll hub 98, and add a layer of plastic wrap above the crankshaft counterweight to directly observe the oil supply to the thrust surface. In the physical simulation test, when the compressor was started for 1 second, lubricating oil appeared on the plastic wrap, that is, the oil pipe 110 can spray the lubricating oil directly onto the movable scroll end plate / thrust surface of the compressor. Compared with an assembled upward channel structure shown in Example 3 of Patent No. CN119288869A, it still needs to rely on an annular channel to increase the oil pressure. The present invention sets the oil supply channel on one side of the eccentric shaft 11. Without setting an annular channel, it can achieve an efficient upward oil supply effect and has a lower manufacturing cost. For example, the attached Figure 18 The solution only needs to open through holes in the crankshaft and the counterweight respectively on the basis of the existing structure and install the oil pipe 110 to achieve the above functions, which simplifies the structure and facilitates processing.

[0083] 2. The oil supply channel close to the side of the eccentric shaft 11 will help to supplement the oil supply area of ​​the thrust surface. In the prior art, the thrust surface is lubricated only by throwing oil through the counterweight part 30, and the lubrication area is limited. In the solution of the present invention, there is an oil supply channel on one side of the eccentric shaft 11, and the eccentric shaft 11 is located on the opposite side of the counterweight part 30. At this time, the oil supply channel can supply oil to the area that was originally unable to be lubricated, making the lubrication area complete. This solution is applicable to all compressors. Even if the thrust surface contact is not simulated, since the lubrication area of ​​the compressor is complete at this time, it can also ensure that the opening side 198 is sufficiently lubricated.

[0084] Although the technical solution of the present invention allows technicians to directly supply oil from the oil supply channel to the orbiting scroll or thrust surface without providing an annular groove, in some cases, technicians still want to increase the oil pressure in the oil supply channel. Preferably, the oil supply structure also includes an annular groove, which is provided on the counterweight and / or crankshaft, and is configured to communicate with the longitudinal channel and the oil supply channel. In some embodiments, an annular groove 81 is provided on the crankshaft 10. When the crankshaft and the counterweight are assembled, a closed annular groove is formed, which communicates with the longitudinal channel and the oil supply channel.

[0085] The technicians of the present invention tested oil supply channels with different inner diameters and found that the inner diameter of the oil supply channel is preferably 1-6 mm, and more preferably, 2-4 mm.

[0086] Example 2.

[0087] This embodiment provides a compressor having any one of the oil supply passages in embodiment 1.

[0088] The other implementations of this embodiment are the same as those of embodiment 1.

[0089] The above are only specific implementation methods of the invention, but the scope of protection of the invention is not limited to this. Any changes or substitutions that are not conceived through creative work should be covered within the scope of protection of the invention. Therefore, the scope of protection of the invention should be based on the scope of protection defined in the claims.

[0090] The inventions shown and described herein may be implemented in the absence of any elements, limitations, or other elements specifically disclosed herein. The terms and expressions employed are used as terms of illustration rather than limitation, and it is not intended that any equivalents of the features shown and described herein or portions thereof be excluded from the use of these terms and expressions, and it should be recognized that various modifications are feasible within the scope of the invention. It should therefore be understood that although the invention has been specifically disclosed through various embodiments and optional features, modifications and variations of the concepts herein may be adopted by those of ordinary skill in the art, and it is believed that these modifications and variations fall within the scope of the invention as defined by the appended claims.

[0091] The contents of the articles, patents, patent applications, and all other documents and electronically available information referenced herein or described herein are incorporated by reference in their entirety to the same extent as if each individual publication were specifically and individually indicated to be incorporated by reference. Applicants reserve the right to incorporate into this application any and all materials and information from any such articles, patents, patent applications, or other references.

Claims

1. An oil supply structure, characterized in that: It includes a counterweight directly or indirectly mounted on the crankshaft, wherein the crankshaft is provided with a longitudinal channel for pumping lubricating oil, and at least one of the counterweight and the crankshaft is provided with or connected to an oil supply channel, wherein the oil supply channel is communicated with the longitudinal channel, and the outlet of the oil supply channel is arranged in an area other than the counterweight portion, and the outlet of the oil supply channel is constructed to be able to directly supply oil to the movable scroll end plate or the thrust surface.

2. An oil supply structure according to claim 1, characterized in that: The thrust surface includes a contact side and an opening side, and the outlet of the oil supply passage is located on the counterweight and / or the crankshaft near the opening side of the thrust surface.

3. An oil supply structure according to claim 1, characterized in that: The oil supply passage is provided in the crankshaft, one end of the oil supply passage is communicated with the longitudinal passage, and the other end of the oil supply passage is configured to face the movable scroll end plate or the thrust surface.

4. An oil supply structure according to claim 1, characterized in that: The oil supply passage is arranged in the crankshaft and the counterweight. The crankshaft is provided with the longitudinal passage for pumping lubricating oil. The crankshaft and the counterweight both have flow paths. The longitudinal passage is connected with the flow path of the crankshaft. The flow path of the crankshaft is connected with the flow path of the counterweight. One end of the counterweight flow path is constructed to face the movable scroll end plate or the thrust surface. The flow path of the crankshaft and the flow path of the counterweight constitute the oil supply passage.

5. An oil supply structure according to claim 4, characterized in that: The flow path in the crankshaft and the flow path in the counterweight are both hole-shaped flow paths.

6. An oil supply structure according to claim 4, characterized in that: The flow path in the counterweight is straight, or the flow path in the counterweight is L-shaped.

7. An oil supply structure according to claim 6, characterized in that: When the flow path in the counterweight is straight, the flow path in the counterweight is inclined.

8. An oil supply structure according to claim 1, characterized in that: The counterweight includes a ring portion, and the oil supply passage is provided in the crankshaft and on the counterweight. The longitudinal passage for pumping lubricating oil is provided in the crankshaft, and a flow path is provided in the crankshaft. The longitudinal passage is communicated with the flow path, and the flow path can transport the lubricating oil to the upper surface of the ring portion. The ring portion is provided with an oil guide slope, and the oil guide slope allows at least part of the lubricating oil on the upper surface of the ring portion to be transported to the movable scroll end plate or the thrust surface. The flow path and the oil guide slope constitute the oil supply passage.

9. An oil supply structure according to claim 8, characterized in that: The upper surface of the ring portion is further provided with blocking surfaces on both sides of the oil guiding inclined surface, and the blocking surfaces and the oil guiding inclined surface are combined to form a guide groove.

10. An oil supply structure according to claim 1, characterized in that: An oil pipe is provided on or installed on the crankshaft, and a mounting hole connecting the longitudinal channel and the internal cavity of the compressor is correspondingly opened in the crankshaft. The crankshaft is connected to the oil pipe through the mounting hole. One end of the oil pipe is constructed to face the movable scroll end plate or the thrust surface, and the hollow area in the oil pipe constitutes the oil supply channel.

11. An oil supply structure according to claim 10, characterized in that: The mounting holes are arranged horizontally or obliquely.

12. An oil supply structure according to claim 11, characterized in that: The mounting holes are arranged obliquely, and the oil pipe is a straight pipe.

13. An oil supply structure according to claim 11, characterized in that: The mounting holes are arranged horizontally, and the oil pipe is a curved pipe.

14. An oil supply structure according to claim 1, characterized in that: An oil pipe is provided on or installed on the counterweight, the longitudinal channel for pumping lubricating oil is provided in the crankshaft, a flow path is provided in the crankshaft, the longitudinal channel is communicated with the flow path in the crankshaft, the mounting hole is provided in the counterweight, the flow path in the crankshaft is communicated with the mounting hole in the counterweight, the counterweight is connected to the oil pipe through the mounting hole, one end of the oil pipe is constructed to face the movable scroll end plate or the thrust surface, the flow path in the crankshaft and the hollow area in the oil pipe constitute the oil supply channel.

15. An oil supply structure according to claim 14, characterized in that: The mounting hole is a straight hole that passes through the ring portion, and the oil pipe is a curved pipe.

16. An oil supply structure according to claim 14, characterized in that: The mounting hole is L-shaped, and the oil pipe is a straight pipe.

17. An oil supply structure according to claim 14, characterized in that: The mounting hole is a three-way hole, the oil pipe is a straight pipe, and one end of the oil pipe inserted into the mounting hole is pointed. When the oil pipe and the mounting hole are installed, the oil pipe can block one end of the mounting hole.

18. An oil supply structure according to any one of claims 10 to 17, characterized in that: In the connection between the oil pipe and the counterweight or the crankshaft, the oil pipe and the counterweight or the crankshaft are integrated, or the oil pipe and the counterweight or the crankshaft are detachably connected.

19. An oil supply structure according to claim 18, characterized in that: The detachable connection includes a plug-in or a threaded connection.

20. An oil supply structure according to claim 18, characterized in that: Integration is achieved through powder metallurgy, welding, powder metallurgy plus prefabricated tubes, or interference fit.

21. An oil supply structure according to claim 1, characterized in that: The connection position of the oil supply channel and the counterweight and / or the crankshaft is close to one side of the eccentric shaft on the crankshaft.

22. An oil supply structure according to claim 1, characterized in that: It also includes an annular groove, which is provided on the crankshaft and / or the counterweight, and the annular groove is connected with the longitudinal channel and the oil supply channel.

23. An oil supply structure according to claim 1, characterized in that: The inner diameter of the oil supply channel is 1 to 6 mm.

24. An oil supply structure according to claim 1, characterized in that: The inner diameter of the oil supply channel is 2-4 mm.

25. A compressor, characterized in that: A fuel supply structure comprising any one of claims 1 to 24.

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