Compressor exhaust non-return structure, compressor and refrigeration equipment
By setting grooves and gaskets on the top plate of the scroll compressor and combining multiple guide column support structures to optimize valve plate movement, the problems of instability and wear of the exhaust check valve plate are solved, and stable operation and noise reduction of the compressor are achieved.
Patent Information
- Application Number
- CN202423112670.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-13
- Publication Date
- 2025-10-03
- Estimated Expiration
- 2034-12-13
AI Technical Summary
The exhaust check valve plate of the existing scroll compressor is prone to instability due to improper adhesion during operation, resulting in wear and noise, and the top plate is prone to abnormal wear, affecting the stability and noise level of the compressor.
A compressor exhaust check structure was designed. By setting grooves and gaskets on the top plate and combining multiple guide column support structures, the movement trajectory and adhesion of the valve plate were optimized, providing buffering and stability, and preventing valve vibration and wear.
It effectively reduces valve plate wear and noise, improves compressor operation stability, and reduces abnormal sounds and noise during operation.
Smart Images
Figure CN223411025U_ABST
Abstract
Description
Technical Field
[0001] The utility model is used in the field of compressors, and particularly relates to a compressor exhaust check structure, a compressor and refrigeration equipment. Background Art
[0002] In the prior art, the exhaust check valve of a scroll compressor generally adopts a structure in which a valve plate cooperates with a guide post. During the exhaust check process, the valve plate reciprocates along the guide post to achieve the exhaust check effect.
[0003] In the existing exhaust check valve, if the return air hole opening of the exhaust check valve top plate is too large and the contact area between the exhaust check valve plate and the top plate is small, the adhesion force generated by the oil seal between the exhaust check valve plate and the top plate is small. When the compressor exhaust ends, the high-pressure airflow exerts a downward pressure on the valve plate through the return air hole. When the downward pressure on the valve plate is greater than the adhesion force, the exhaust check valve plate will become unstable and the valve plate will shake up and down continuously, thereby aggravating the wear of the valve plate and the parts in contact with the valve plate. The scroll compressor will also generate additional noise and abnormal sound during operation; if the return air hole opening of the top plate is too small, the adhesion force generated by the oil seal between the exhaust check valve plate and the top plate is large, and the pressure generated by the return air hole is small. When the scroll compressor stops, the exhaust check valve plate may not move smoothly, causing the compressor to reverse and cause a large shutdown noise.
[0004] In addition, since the top plate is softer than the valve plate, it is prone to abnormal wear and tear, and the flatness and roughness of the exhaust check valve top plate are destroyed, which reduces the adhesion between the exhaust check valve plate and the top plate due to the oil seal, resulting in instability of the exhaust check valve plate. The valve plate keeps shaking up and down on the guide column, thereby aggravating the wear of the valve plate, guide column and top plate, and causing the compressor to produce additional noise and abnormal sounds. Utility Model Content
[0005] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art, and to provide a compressor exhaust check structure, a compressor and a refrigeration device.
[0006] The technical solution adopted by the utility model to solve its technical problems is:
[0007] In a first aspect, a compressor exhaust check structure comprises a fixed plate, a top plate, a valve plate and a plurality of guide pillars, wherein the fixed plate is provided with an exhaust hole, the top plate is arranged outside the exhaust hole, the top plate is connected to the fixed plate through the plurality of guide pillars, a gap is left between the top plate and the fixed plate, the top plate extends from the first surface to the second surface along the thickness direction, the top plate is provided with a groove extending toward the first surface on the second surface facing the fixed plate, the bottom of the groove is provided with a return air hole penetrating to the first surface, the valve plate is provided on the guide pillar, and can reciprocate along the guide pillar.
[0008] In combination with the first aspect, in certain implementations of the first aspect, a diameter of the air return hole is d, and a diameter of the groove is 5d to 10d.
[0009] In combination with the first aspect and the above-mentioned implementations, in some implementations of the first aspect, a first gasket is provided on the second surface of the top plate, and the first gasket is provided with a first through hole at a position corresponding to the groove, and the diameter of the first through hole is 5d to 10d.
[0010] In combination with the first aspect and the above implementations, in certain implementations of the first aspect, a depth of the groove extending from the second surface toward the first surface is 0.5 to 2 mm.
[0011] In combination with the first aspect and the above implementations, in certain implementations of the first aspect, the air return hole is located at the center of the groove, and the diameter of the air return hole is 1 to 3 mm.
[0012] In combination with the first aspect and the above implementations, in some implementations of the first aspect, a second gasket is provided on the back end surface of the fixed plate, and the second gasket is provided with a second through hole at a position corresponding to the exhaust hole.
[0013] In combination with the first aspect and the above-mentioned implementation methods, in some implementation methods of the first aspect, the guide column includes a first guide column, a second guide column and a third guide column, and the first guide column, the second guide column and the third guide column are distributed in three different directions of the valve plate, and the valve plate is provided with a first guide hole cooperating with the first guide column, a second guide hole cooperating with the second guide column and a third guide hole cooperating with the third guide column.
[0014] In combination with the first aspect and the above-mentioned implementations, in some implementations of the first aspect, the guide column includes a guide sleeve and a screw, the screw passes through the top plate and is connected to the fixed plate, and the guide sleeve is sleeved on the screw and supported between the top plate and the fixed plate.
[0015] In a second aspect, a compressor comprises the compressor exhaust check structure described in any implementation manner in the first aspect.
[0016] In a third aspect, a refrigeration device comprises the compressor described in any implementation of the second aspect.
[0017] One of the above technical solutions has at least one of the following advantages or beneficial effects: In the technical solution of the present invention, when the scroll compressor is exhausted, the refrigerant compressed by the movable disc and the fixed disc pushes the valve plate toward the top plate, and the valve plate is attached to the top plate under the action of the adhesive force generated by the oil seal, etc., and the refrigerant is discharged through the exhaust hole. When the scroll compressor finishes exhausting or stops working, the high-pressure air flows through the return air hole of the top plate, and then pushes the valve plate toward the fixed disc and closes the exhaust hole. Among them, by adding a groove on the second side of the top plate, a buffer can be provided for the high-pressure air flow flowing in from the return air hole, reducing the flow rate of the high-pressure air flow flowing in from the return air hole, preventing the exhaust check valve plate from being subjected to too much downward pressure, ensuring that the valve plate will not fall when the compressor is running, avoiding the state of constant up and down shaking, reducing the wear of the valve plate and the parts in contact with the valve plate, and at the same time, reducing the extra noise and abnormal sound generated by the scroll compressor during operation.
[0018] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:
[0020] Figure 1 This is a schematic structural diagram of an embodiment of the compressor of the utility model;
[0021] Figure 2 This is a schematic cross-sectional view of an embodiment of the compressor exhaust check structure of the present utility model;
[0022] Figure 3 This is a top view of an embodiment of the compressor exhaust check structure of the utility model;
[0023] Figure 4 This is a schematic diagram of the structure of an embodiment of the compressor exhaust check structure of the utility model when it is shut down;
[0024] Figure 5 This is a schematic structural diagram of an embodiment of the compressor exhaust check structure of the present invention during operation. DETAILED DESCRIPTION
[0025] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.
[0026] In the present invention, if there is a description of directions (up, down, left, right, front and back), it is only for the convenience of describing the technical solution of the present invention, and does not indicate or imply that the technical features referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.
[0027] In this utility model, "several" means one or more, "multiple" means more than two, "greater than," "less than," "exceeds," etc. are understood to exclude the number itself; "above," "below," "within," etc. are understood to include the number itself. In the description of this utility model, the use of "first" or "second" is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.
[0028] In this utility model, unless otherwise expressly defined, terms such as "disposed," "installed," and "connected" should be interpreted broadly. For example, they may refer to direct connection or indirect connection through an intermediate medium; fixed connection or detachable connection or integral molding; mechanical connection or electrical connection or mutual communication; and internal connection between two components or interaction between two components. Those skilled in the art can reasonably determine the specific meanings of these terms in this utility model based on the specific content of the technical solution.
[0029] See also Figure 1 、 Figure 2 , an embodiment of the present utility model provides a compressor exhaust check structure, including a fixed plate 100, a top plate 200, a valve plate 300 and a plurality of guide pillars 400, the fixed plate 100 is provided with an exhaust hole 101, the top plate 200 is arranged outside the exhaust hole 101, the top plate 200 is connected to the fixed plate 100 through a plurality of guide pillars 400, and a gap is left between the top plate 200 and the fixed plate 100, the top plate 200 extends from the first surface 201 to the second surface 202 along the thickness direction, the top plate 200 is provided with a groove 203 extending toward the first surface 201 on the second surface 202 facing the fixed plate 100, and the bottom of the groove 203 is provided with a return hole 204 penetrating to the first surface 201, the valve plate 300 is provided on the guide pillar 400, and can reciprocate along the guide pillar 400.
[0030] Combine Figure 1 、 Figure 4 、 Figure 5In the technical solution of the present invention, when the scroll compressor is exhausting, the refrigerant compressed by the movable plate 500 and the fixed plate 100 pushes the valve plate 300 toward the top plate 200. The valve plate 300 is attached to the top plate 200 under the action of the adhesive force generated by the oil seal, etc., and the refrigerant is discharged through the exhaust hole 101. When the scroll compressor finishes exhausting or stops working, the high-pressure air flows through the return air hole 204 of the top plate 200, and then pushes the valve plate 300 toward the fixed plate 100 and closes the exhaust hole 101. Among them, by adding a groove 203 on the second surface 202 of the top plate 200, a buffer can be provided for the high-pressure airflow flowing in from the return air hole 204, reducing the flow rate of the high-pressure airflow flowing in from the return air hole 204, preventing the exhaust check valve plate 300 from being subjected to too much downward pressure, ensuring that the valve plate 300 will not fall when the compressor is running, avoiding the state of constant up and down shaking, reducing the wear of the valve plate 300 and the parts in contact with the valve plate 300, and at the same time, reducing the additional noise and abnormal sound generated by the scroll compressor during operation.
[0031] In some embodiments, see Figure 2 The diameter ΦA of the air return hole 204 is d, and the diameter ΦB of the groove 203 is 5d~10d.
[0032] In some embodiments, see Figure 2 The depth of the groove 203 extending from the second surface 202 to the first surface 201 is H, where H=0.5-2 mm.
[0033] By providing the grooves 203 within a specific diameter range and depth range, the valve plate 300 will not malfunction due to excessive or insufficient adhesion F.
[0034] Further, in some embodiments, see Figure 2 The second surface 202 of the top plate 200 is provided with a first gasket 600. The first gasket 600 has higher strength and higher hardness than the top plate 200. By arranging the first gasket 600 on the second surface 202 of the top plate 200, the wear of the top plate 200 caused by the valve plate 300 when it moves is reduced. Moreover, since the first gasket 600 has higher strength and higher hardness, it is not easy to increase the flatness and roughness of the first gasket 600, so that the adhesion force between the valve plate 300 and the first gasket 600 due to the oil seal does not change much, thereby ensuring that the valve plate 300 does not shake up and down when the compressor is running, and avoiding other noises and abnormal sounds from the compressor.
[0035] Among them, see Figure 2The first gasket 600 is provided with a first through hole at a position corresponding to the groove 203, and the diameter ΦC of the first through hole is 5d to 10d. This embodiment can ensure that the valve plate 300 will not be unable to reset when the compressor stops due to excessive adhesion F between the valve plate 300 and the first gasket 600, causing the compressor to reverse and cause a large shutdown noise. Alternatively, if the adhesion F is too small, the valve plate 300 will be unstable when the compressor is running, and the valve plate 300 will show a state of constant up and down shaking, thereby aggravating the wear of the valve plate 300 and the parts in contact with the valve plate 300, and the scroll compressor will also generate additional noise and abnormal sounds during operation.
[0036] In some embodiments, see Figure 2 The return air hole 204 is located at the center of the groove 203 and has a diameter of ΦA = 1-3 mm. When the scroll compressor finishes exhausting or stops operating, the high-pressure air flows through the top plate 200 for buffering, then returns through the return air hole 204 on the top plate 200, pushing the valve plate 300 downward. This ensures that the force applied to the valve plate 300 is even when it returns to its original position, preventing it from shifting and interfering with the guide post 400.
[0037] In some embodiments, see Figure 2 A second gasket 700 is provided on the back side of the fixed plate 100. The second gasket 700 has a second through hole at a position corresponding to the exhaust hole 101. The second gasket 700 has higher strength and hardness than the fixed plate 100. By providing the second gasket 700 on the back side of the fixed plate 100, wear on the fixed plate 100 caused by the valve plate 300 during operation is reduced, thereby preventing other noise and abnormal sounds from the compressor.
[0038] In some embodiments, see Figure 1-Figure 5 The guide column 400 includes a first guide column, a second guide column and a third guide column. The first guide column, the second guide column and the third guide column are distributed in three different directions of the valve plate 300. The valve plate 300 is provided with a first guide hole cooperating with the first guide column, a second guide hole cooperating with the second guide column and a third guide hole cooperating with the third guide column.
[0039] In this embodiment, a three-point guide column 400 support structure is adopted. The guide columns 400 are evenly distributed in a triangular shape around the exhaust hole 101 of the fixed plate 100. The guide columns 400 fix the second gasket 700 on the fixed plate 100, and the first gasket 600 is fixed between the guide columns 400 and the top plate 200. The top plate 200 is located at the top. The valve plate 300 moves up and down along the guide columns 400 between the first gasket 600 and the second gasket 700, so that the valve plate 300 can move upward along the guide columns 400 to open the exhaust hole 101, or move downward to reset and close the exhaust hole 101.
[0040] In some embodiments, the guide column 400 includes a guide sleeve 401 and a screw 402. The screw 402 passes through the top plate 200 and is connected to the fixed plate 100. The guide sleeve 401 is sleeved on the screw 402 and supported between the top plate 200 and the fixed plate 100. The top plate 200 and the guide column 400 are fixed by the screw 402. The entire structure is stable and reliable and easy to assemble.
[0041] An embodiment of the present utility model further provides a compressor, comprising the compressor exhaust check structure in any of the above embodiments.
[0042] Combine Figure 1 When the compressor in the embodiment of the present invention is in operation, as the compressor crankshaft 800 rotates, the multiple meshing points of the fixed disk 100 and the rotating disk 500 continuously move from the outside to the inside along the scroll tooth walls, forming a vortex crescent-shaped working chamber whose volume gradually decreases from large to small, achieving a periodic change in the working chamber volume and realizing suction, compression, and discharge. When the scroll compressor is exhausted, the compressed high-pressure gas is discharged through the exhaust hole 101 on the back of the fixed disk 100. The high-pressure gas lifts the valve plate 300, which moves upward along the guide post 400 and stops when it contacts the top plate 200. The high-pressure airflow is discharged from the vortex crescent-shaped working chamber into the high-pressure chamber above the fixed scroll.
[0043] The embodiment of the present invention further provides a refrigeration device, comprising the compressor in any of the above embodiments. The refrigeration device includes an air conditioner, a refrigerator, and the like.
[0044] Throughout this specification, references to terms such as "example," "embodiment," or "some embodiments" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
[0045] Of course, the invention is not limited to the above-mentioned embodiments. Those skilled in the art may make equivalent modifications or substitutions without violating the spirit of the invention. These equivalent modifications or substitutions are all within the scope defined by the claims of this application.
Claims
1. A compressor exhaust check structure, characterized in that: The valve disc comprises a fixed plate, a top plate, a valve plate and a plurality of guide pillars, wherein the fixed plate is provided with an exhaust hole, the top plate is arranged outside the exhaust hole, the top plate is connected to the fixed plate through a plurality of guide pillars, a gap is left between the top plate and the fixed plate, the top plate extends from the first surface to the second surface along the thickness direction, the top plate is provided with a groove extending toward the first surface on the second surface facing the fixed plate, the bottom of the groove is provided with an air return hole penetrating to the first surface, the valve disc is provided on the guide pillar and can reciprocate along the guide pillar.
2. The compressor exhaust check structure according to claim 1, characterized in that: The diameter of the air return hole is d, and the diameter of the groove is 5d-10d.
3. The compressor exhaust check structure according to claim 2, characterized in that: A first gasket is provided on the second surface of the top plate. The first gasket is provided with a first through hole at a position corresponding to the groove. The diameter of the first through hole is 5d to 10d.
4. The compressor exhaust check structure according to claim 1, characterized in that: The depth of the groove extending from the second surface toward the first surface is 0.5-2 mm.
5. The compressor exhaust check structure according to claim 1, characterized in that: The air return hole is located at the center of the groove, and the diameter of the air return hole is 1 to 3 mm.
6. The compressor exhaust check structure according to claim 1, characterized in that: A second gasket is provided on the back end surface of the fixed plate, and a second through hole is provided on the second gasket at a position corresponding to the exhaust hole.
7. The compressor exhaust check structure according to claim 1, characterized in that: The guide pillars include a first guide pillar, a second guide pillar and a third guide pillar, which are distributed in three different directions of the valve plate. The valve plate is provided with a first guide hole that cooperates with the first guide pillar, a second guide hole that cooperates with the second guide pillar and a third guide hole that cooperates with the third guide pillar.
8. The compressor exhaust check structure according to claim 1, characterized in that: The guide column includes a guide sleeve and a screw. The screw passes through the top plate and is connected to the fixed plate. The guide sleeve is sleeved on the screw and supported between the top plate and the fixed plate.
9. A compressor, characterized in that: The invention comprises the compressor exhaust check structure according to any one of claims 1 to 8.
10. A refrigeration device, characterized in that: Including the compressor according to claim 9.