Movable disc structure and scroll compressor
By setting up lubrication channels in the moving disk structure of the scroll compressor, the lubricating oil can flow effectively to the bearing, solving the problem of insufficient lubrication, reducing noise and extending the equipment life.
Patent Information
- Application Number
- CN202421323207.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-11
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-06-11
AI Technical Summary
In existing scroll compressors, insufficient lubrication between the moving disc and the bearing can easily lead to bearing failure, resulting in noise and irreparable damage.
A moving disk structure is designed, including a moving disk substrate and a moving disk type line, forming a compression chamber, and a lubricating passage is provided in the compression chamber, the lubricating passage consisting of a first through hole and a second through hole, through which lubricating oil flows to the bearing to ensure sufficient lubrication.
Through effective lubrication, bearing failure is avoided, the operating noise of the scroll compressor is significantly reduced, and the service life of the equipment is extended.
Smart Images
Figure CN222746237U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of compressors, and in particular to a moving plate structure and a scroll compressor. Background Art
[0002] Scroll air compressors are widely used in industries such as industry, agriculture, and transportation where compressed air is needed due to their high efficiency, low noise, small size, energy saving, and environmental protection. The scroll disks, the main operating parts of a scroll air compressor, only mesh with each other, and the relatively low operating speed makes it difficult to wear out. Therefore, the service life is longer than that of piston and screw compressors, and it is an ideal power source for pneumatic machinery. In a scroll air compressor, the main operating parts are the moving disk and the stationary disk. The moving disk and the stationary disk are equipped with a scroll body, which is usually combined with the moving disk and the stationary disk to form a compression chamber. When the moving disk is driven by the crankshaft to move along a certain circular trajectory, the scroll body of the moving disk moves relative to the scroll body of the stationary disk, that is, the compression chamber formed by the two moves and changes its volume, thereby performing air intake, compression, and discharge to complete the process of compressing air.
[0003] In the relevant technology, the moving plate is connected to the counterweight block through the bearing, which has very high requirements for the lubrication of the bearing. If it is not fully lubricated, it will easily lead to bearing failure, abnormal noise, and even in severe cases, irreparable damage to the entire machine. Utility Model Content
[0004] The purpose of the embodiments of the present application is to provide a moving plate structure and a scroll compressor that can effectively ensure lubrication and avoid bearing failure.
[0005] In a first aspect, an embodiment of the present application provides a moving disk structure, comprising: a moving disk substrate and a moving disk profile, wherein the moving disk profile connects the moving disk substrate to form a compression chamber, wherein the compression chamber is configured for gas compression, and wherein the compression chamber is provided with a lubrication channel along a preset direction, wherein the lubrication channel comprises a first through hole and a second through hole, wherein the first through hole is connected to the second through hole so that lubricating oil passes through the first through hole and the second through hole in sequence.
[0006] In the above-mentioned implementation process, the moving disc profile connects the moving disc base plate to form a compression chamber. The compression chamber is provided with a lubrication channel. The lubrication channel includes a first through hole and a second through hole which are interconnected. When the moving disc structure is connected to the counterweight block through the bearing, the lubricating oil in the compression chamber passes through the first through hole and the second through hole in turn and then flows to the bearing, thereby effectively ensuring lubrication, avoiding bearing failure, and significantly reducing the operating noise of the scroll compressor.
[0007] In some embodiments, a groove is configured on a side of the moving plate substrate facing away from the compression chamber, the groove is configured to accommodate a counterweight block, and the groove is in communication with the second through hole.
[0008] In the above implementation process, the moving plate substrate is provided with a groove for accommodating the counterweight block, so that the lubricating oil in the compression chamber can enter the groove through the first through hole and the second through hole, thereby lubricating the bearing, avoiding bearing failure, and significantly reducing the operating noise of the scroll compressor.
[0009] In some embodiments, a diameter of the first through hole is greater than a diameter of the second through hole.
[0010] In the above implementation process, since the diameter of the second through hole is very small, by forming a step in the lubrication channel, not only the processing difficulty of the lubrication channel can be reduced, but also the pressure loss during the lubrication process can be reduced.
[0011] In some embodiments, the diameter of the second through hole is 1 / 10 to 1 / 5 of the diameter of the first through hole. A step can be formed in the lubrication channel, which can reduce the processing difficulty of the lubrication channel and the pressure loss during the lubrication process, and part of the lubricating oil can be stored in the first through hole, which can more effectively ensure the lubrication of the bearing, and can also separate part of the lubricating oil from the refrigerant, thereby improving the heat exchange efficiency of the air conditioning system.
[0012] In some embodiments, the length of the first through hole is not less than the length of the second through hole. This can reduce the processing difficulty of the lubrication channel and the pressure loss during the lubrication process, and improve the processing yield rate of the moving disk structure.
[0013] In some embodiments, the length of the second through hole is 1 / 20 to 1 / 5 of the length of the first through hole. Since the diameter of the second through hole is very small, by forming a step in the lubrication channel, not only the processing difficulty of the lubrication channel can be reduced, but also the pressure loss during the lubrication process can be reduced.
[0014] In some embodiments, the concentric arrangement of the first through hole and the second through hole can complete the processing by positioning once, thereby improving the processing accuracy. The concentric arrangement can also prevent local force in the first through hole, reduce pressure loss, and ensure sufficient flow rate and lubrication.
[0015] In some embodiments, the first through hole includes at least one waist-shaped hole, and the second through hole includes a straight hole, so that the lubricating oil in the compression chamber can be introduced into the groove of the moving plate structure, reducing the transportation obstacle of the lubricating oil, thereby fully lubricating the bearing, avoiding bearing failure, and significantly reducing the operating noise of the scroll compressor.
[0016] In some embodiments, the central axis of the first through hole deviates from the central axis of the second through hole, thereby reducing interference during processing, ensuring that the outlet position of the lubrication channel is located at the optimal lubrication position of the bearing, and facilitating adjustment of the feed position.
[0017] In a second aspect, the present application also provides a scroll compressor, comprising a moving plate structure as described in any one of the above items.
[0018] Since the scroll compressor provided in the second embodiment of the present application includes the moving plate structure described in the technical solution of the first aspect, it has all the technical effects of the above embodiments and will not be repeated here.
[0019] Other features and advantages of the present disclosure will be set forth in the following description, or some features and advantages may be inferred or unambiguously determined from the description, or may be learned by implementing the above-mentioned technology of the present disclosure.
[0020] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.
[0022] Figure 1 A schematic diagram of the structure of the moving disk provided in the embodiment of the present application;
[0023] Figure 2 A cross-sectional view of a moving disk structure provided in an embodiment of the present application;
[0024] Figure 3 A top view of the moving disk structure provided in an embodiment of the present application;
[0025] Figure 4 for Figure 3 A partial enlarged schematic diagram of
[0026] Figure 5 Schematic diagram of other structural forms of the lubrication channel of the movable disc structure provided in an embodiment of the present application.
[0027] Reference numerals
[0028] 100, moving disk substrate; 200, moving disk profile; 300, compression chamber; 400, lubrication channel; 401, first through hole; 402, second through hole; 500, counterweight; 600, bearing; 700, main shaft. DETAILED DESCRIPTION
[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.
[0030] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.
[0031] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.
[0032] In addition, the terms "installed", "set", "provided with", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or a point connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0033] In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.
[0034] Example
[0035] Scroll compressor is a kind of positive displacement compressor with high efficiency, low noise and smooth operation. It has been widely used in air conditioners and refrigeration units in recent years. Generally speaking, scroll compressor consists of a closed shell, a moving plate, a stationary plate, a crankshaft, an anti-rotation mechanism and a motor. A pair of meshing moving and stationary plate scroll teeth form several pairs of crescent-shaped closed working chambers. Driven by the crankshaft, the moving plate revolves around the center of the stationary plate and makes a non-rotating translation with a fixed rotation radius. The crescent working chamber moves continuously toward the center, and its volume continues to decrease while the pressure continues to increase until it communicates with the central exhaust hole. The high-pressure refrigerant is discharged from the pump body, thereby realizing the suction and compression of the refrigerant.
[0036] During the design process, the inventor discovered that in existing scroll compressors, the moving plate is generally connected to the main shaft counterweight through a ball bearing, but the ball bearing has the defect of high noise. In order to solve this problem, a sliding bearing is used to connect the moving plate and the main shaft counterweight. This method has very high requirements for the lubrication of the sliding bearing. If it is not fully lubricated, it is easy to cause the sliding bearing to fail, produce abnormalities, and even cause irreparable damage to the entire machine in severe cases.
[0037] In view of this, if Figure 1-Figure 5 As shown, in the first aspect, an embodiment of the present application provides a moving disk structure, including: a moving disk substrate 100 and a moving disk profile 200, the moving disk profile 200 is connected to the moving disk substrate 100 to form a compression chamber 300, the compression chamber 300 is configured for gas compression, the compression chamber 300 is configured with a lubrication channel 400 along a preset direction, the preset direction includes but is not limited to the up and down direction, wherein the lubrication channel 400 includes a first through hole 401 and a second through hole 402, the first through hole 401 is connected to the second through hole 402, so that lubricating oil passes through the first through hole 401 and the second through hole 402 in sequence.
[0038] Exemplarily, the moving disc structure is connected to the counterweight 500 through a bearing 600, and the bearing 600 includes but is not limited to a sliding bearing, and the counterweight 500 is connected to the main shaft 700; wherein the moving disc profile 200 is formed on the moving disc substrate 100, and the moving disc profile 200 and the moving disc substrate 100 enclose an air inlet chamber, the compression chamber 300 and the air outlet chamber, and the air inlet chamber, the compression chamber 300 and the air outlet chamber are connected in sequence; one end of the first through hole 401 is connected to the compression chamber 300, and the other end thereof is connected to the second through hole 402, so that the lubricating oil enters the lubrication channel 400 from the compression chamber 300, wherein the lubrication channel 400 can be an inclined hole, a straight hole and / or a tapered hole, etc.
[0039] In the above-mentioned implementation process, the moving disc profile 200 is connected to the moving disc substrate 100 to form a compression chamber 300. The compression chamber 300 is provided with a lubrication channel 400. The lubrication channel 400 includes a first through hole 401 and a second through hole 402 which are connected to each other, so that when the moving disc structure is connected to the counterweight block 500 through the bearing 600, the lubricating oil in the compression chamber 300 passes through the first through hole 401 and the second through hole 402 in turn and then flows to the bearing 600, thereby effectively ensuring lubrication, avoiding failure of the bearing 600, and significantly reducing the operating noise of the scroll compressor.
[0040] like Figure 2 As shown, a groove is disposed on a side of the moving plate substrate 100 away from the compression chamber 300 , and the groove is configured to accommodate a counterweight 500 , and the groove is in communication with the second through hole 402 .
[0041] In the above-mentioned implementation process, the moving disk substrate 100 is configured with a groove for accommodating the counterweight block 500, so that the lubricating oil in the compression chamber 300 can enter the groove through the first through hole 401 and the second through hole 402, thereby lubricating the bearing 600, avoiding failure of the bearing 600, and significantly reducing the operating noise of the scroll compressor.
[0042] In some embodiments, a diameter of the first through hole 401 is greater than a diameter of the second through hole 402 .
[0043] In the above implementation process, since the diameter of the second through hole 402 is very small, by forming a step in the lubrication channel 400, not only the processing difficulty of the lubrication channel 400 can be reduced, but also the pressure loss during the lubrication process can be reduced.
[0044] In some embodiments, the diameter of the second through hole 402 is 1 / 10 to 1 / 5 of the diameter of the first through hole 401. A step can be formed in the lubrication channel 400, which can reduce the difficulty of processing the lubrication channel 400 and the pressure loss during the lubrication process, and part of the lubricating oil can be stored in the first through hole 401, which can more effectively ensure the lubrication of the bearing 600, and can also separate part of the lubricating oil from the refrigerant, thereby improving the heat exchange efficiency of the air conditioning system.
[0045] In some embodiments, the length of the first through hole 401 is not less than the length of the second through hole 402. This can reduce the processing difficulty of the lubrication channel 400 and the pressure loss during the lubrication process, and improve the processing yield rate of the moving disk structure.
[0046] In some embodiments, the length of the second through hole 402 is 1 / 20 to 1 / 5 of the length of the first through hole 401. Since the diameter of the second through hole 402 is very small, by forming a step in the lubrication channel 400, not only the processing difficulty of the lubrication channel 400 can be reduced, but also the pressure loss during the lubrication process can be reduced.
[0047] In some embodiments, the first through hole 401 and the second through hole 402 are arranged concentrically. The processing can be completed by positioning once, thereby improving the processing accuracy. The concentric arrangement can also prevent local force in the first through hole 401, reduce pressure loss, and ensure sufficient flow rate and lubrication.
[0048] In some embodiments, the first through hole 401 includes at least one waist-shaped hole, that is, the outer diameter of the first through hole 401 gradually decreases along the direction close to the second through hole 402, and the second through hole 402 includes a straight hole, that is, the outer diameter of the second through hole 402 remains unchanged in the direction from the first through hole 401 to the second through hole 402. When the first through hole 401 includes multiple waist-shaped holes, the lubrication channel 400 forms three or more delivery sections to increase the oil storage lubrication effect; of course, in other embodiments, the first through hole 401 and the second through hole 402 are both set as straight holes, and the first through hole 401 can be a one-stage straight hole or a multi-stage straight hole. The lubricating oil of the compression chamber 300 can be introduced into the groove of the moving plate structure, reducing the transportation obstacle of the lubricating oil, thereby fully lubricating the bearing 600, avoiding the failure of the bearing 600, and significantly reducing the operating noise of the scroll compressor.
[0049] In some embodiments, the central axis of the first through hole 401 deviates from the central axis of the second through hole 402. For example, both the first through hole 401 and the second through hole 402 can be set as straight holes, and the first through hole 401 and the second through hole 402 can also be a combination of an oblique hole and a straight hole (a tapered hole or a waist-shaped hole), etc. The interference during the processing is reduced, and the outlet position of the lubrication channel 400 is ensured to be located at the optimal lubrication position of the bearing 600, so as to facilitate the adjustment of the feed position.
[0050] In a second aspect, the present application also provides a scroll compressor, comprising the moving plate structure as described above.
[0051] Since the scroll compressor provided in the second embodiment of the present application includes the moving plate structure described in the technical solution of the first aspect, it has all the technical effects of the above embodiments and will not be repeated here.
[0052] In all the embodiments of the present application, "big" and "small" are relative, "more" and "less" are relative, and "up" and "down" are relative. The expressions of such relative terms are not elaborated in the embodiments of the present application.
[0053] It should be understood that the "in this embodiment", "in the embodiment of the present application" or "as an optional implementation" mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, "in this embodiment", "in the embodiment of the present application" or "as an optional implementation" appearing throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. Those skilled in the art should also be aware that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily required for the present application.
[0054] In the various embodiments of the present application, it should be understood that the size of the serial numbers of the above-mentioned processes does not necessarily mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.
[0055] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.
Claims
1. A moving disk structure, characterized in that: include: A moving disk substrate and a moving disk profile, wherein the moving disk profile connects the moving disk substrate to form a compression chamber, wherein the compression chamber is configured for gas compression, and wherein the compression chamber is provided with a lubrication channel along a preset direction, wherein the lubrication channel comprises a first through hole and a second through hole, wherein the first through hole is connected to the second through hole, so that lubricating oil passes through the first through hole and the second through hole in sequence.
2. The moving plate structure according to claim 1, characterized in that: A groove is arranged on a side of the moving plate substrate facing away from the compression chamber. The groove is configured to accommodate a counterweight block, and the groove is in communication with the second through hole.
3. The moving plate structure according to claim 1 or 2, characterized in that: A diameter of the first through hole is greater than a diameter of the second through hole.
4. The moving plate structure according to claim 3, characterized in that: The diameter of the second through hole is 1 / 10 to 1 / 5 of the diameter of the first through hole.
5. The moving plate structure according to claim 4, characterized in that: The length of the first through hole is not less than the length of the second through hole.
6. The moving plate structure according to claim 5, characterized in that: The length of the second through hole is 1 / 20 to 1 / 5 of the length of the first through hole.
7. The moving plate structure according to claim 6, characterized in that: The first through hole and the second through hole are arranged concentrically.
8. The moving plate structure according to claim 7, characterized in that: The first through hole includes at least one waist-shaped hole, and the second through hole includes a straight hole.
9. The moving plate structure according to claim 3, characterized in that: A central axis of the first through hole deviates from a central axis of the second through hole.
10. A scroll compressor, characterized in that: It comprises a moving disk structure as described in any one of claims 1-9.