Exhaust valve assembly, compressor and air conditioner

Abstract

The present application provides an exhaust valve assembly, a compressor, and an air conditioner. The exhaust valve assembly includes a flange (1) and an exhaust assembly. The flange (1) is provided with a valve seat (2), the valve seat (2) is provided with an exhaust port (3), the exhaust assembly is arranged on the valve seat (2), the exhaust assembly includes an upper valve plate (4) and a lower valve plate (5), the lower valve plate (5) is arranged on the valve seat (2), the lower valve plate (5) is provided with a refrigerant flow hole (6) corresponding to the exhaust port (3), the projection of the exhaust port (3) along the air flow direction completely falls within the projection range of the refrigerant flow hole (6) along the air flow direction, the upper valve plate (4) can close the refrigerant flow hole (6), and the head (8) of the lower valve plate (5) where the refrigerant flow hole (6) is provided is made of a damping material. According to the exhaust valve assembly of the present application, the force of the valve plate hitting the valve seat can be effectively reduced, and the operation noise of the compressor can be reduced.

Description

Technical Field

[0001] This application relates to the technical field of compressors, and particularly to an exhaust valve assembly, a compressor, and an air conditioner. Background Art

[0002] A compressor is a core component of a refrigeration device, and the performance and reliability of the compressor directly determine the quality of the refrigeration device. The compressor pump body mainly consists of a cylinder, a crankshaft, a cover plate, a sliding vane, a flange, an exhaust valve assembly, etc. When the compressor operates, the crankshaft rotates in the cylinder and drives the sliding vane to reciprocate, sucking in low-pressure refrigerant and compressing it by changing the volume of the cylinder. When the refrigerant pressure is greater than the condensation pressure, the high-pressure refrigerant pushes open the exhaust valve plate through the flange exhaust port for exhaust. After the exhaust is completed, the valve plate closes to shut off the exhaust port, thus completing the entire suction, compression, and exhaust process.

[0003] In this process, the exhaust valve plate continuously opens and closes. Due to the pressure difference and elastic deformation, a large slapping force is easily generated when the exhaust valve plate closes, resulting in noise. Therefore, how to reduce the force of the valve plate slapping on the valve seat is a key content in the research on reducing the operating noise of the compressor. Summary of the Invention

[0004] Therefore, the technical problem to be solved by this application is to provide an exhaust valve assembly, a compressor, and an air conditioner that can effectively reduce the force of the valve plate slapping on the valve seat and reduce the operating noise of the compressor.

[0005] To solve the above problems, this application provides an exhaust valve assembly, including a flange and an exhaust assembly. The flange is provided with a valve seat, the valve seat is provided with an exhaust port, the exhaust assembly is arranged on the valve seat, the exhaust assembly includes an upper valve plate and a lower valve plate. The lower valve plate is arranged on the valve seat, the lower valve plate is provided with a refrigerant flow hole corresponding to the exhaust port, the projection of the exhaust port along the air flow direction completely falls within the projection range of the refrigerant flow hole along the air flow direction, the upper valve plate can close the refrigerant flow hole, and the head of the lower valve plate where the refrigerant flow hole is provided is made of a damping material.

[0006] Preferably, the exhaust port is a round hole, the refrigerant flow hole is a round hole, the exhaust port and the refrigerant flow hole are coaxially arranged, the diameter of the exhaust port is d, the diameter of the refrigerant flow hole is D, and D≥1.05*d.

[0007] Preferably, the lower valve plate includes damping support feet, and the damping support feet are connected to the head.

[0008] Preferably, the number of refrigerant flow holes on the head is at least one, and the number of damping support feet is the same as the number of refrigerant flow holes.

[0009] Preferably, the damping support feet extend radially along the refrigerant flow hole, and the extension line of the damping support feet passes through the center of the refrigerant flow hole.

[0010] Preferably, an installation hole is provided at one end of the shock-absorbing foot away from the head, and the shock-absorbing foot is symmetric about the central connection line of the installation hole and the refrigerant flow hole.

[0011] Preferably, the lower valve plate is made of a damping material.

[0012] Preferably, the lower valve plate includes a first valve section and a second valve section, and the first valve section and the second valve section are spliced together.

[0013] Preferably, a groove is provided on the first valve section, a protrusion is provided on the second valve section, and the protrusion is fitted into the groove; or, a protrusion is provided on the first valve section, a groove is provided on the second valve section, and the protrusion is fitted into the groove.

[0014] Preferably, the head is located on the second valve section, the first valve section is made of a rigid material, and the second valve section is made of a damping material.

[0015] Preferably, the exhaust assembly further includes a valve plate baffle, the valve plate baffle is fixed on the valve seat, and the upper valve plate and the lower valve plate are located between the valve plate baffle and the valve seat.

[0016] Preferably, the length of the first valve section is h, the length of the straight section of the valve plate baffle is H, and h≥H.

[0017] Preferably, the shock-absorbing foot is fixedly connected to the valve seat by clamping.

[0018] According to another aspect of the present application, a compressor is provided, including an exhaust valve assembly, and the exhaust valve assembly is the above-mentioned exhaust valve assembly.

[0019] According to another aspect of the present application, an air conditioner is provided, including an exhaust valve assembly, and the exhaust valve assembly is the above-mentioned exhaust valve assembly.

[0020] The exhaust valve assembly provided by this application includes a flange and an exhaust assembly. The flange is provided with a valve seat, the valve seat is provided with an exhaust port, the exhaust assembly is arranged on the valve seat, the exhaust assembly includes an upper valve plate and a lower valve plate, the lower valve plate is arranged on the valve seat, the lower valve plate is provided with a refrigerant flow hole corresponding to the exhaust port, the projection of the exhaust port along the air flow direction completely falls within the projection range of the refrigerant flow hole along the air flow direction, the upper valve plate can close the refrigerant flow hole, and the head of the lower valve plate where the refrigerant flow hole is provided is made of a damping material. This exhaust valve assembly adopts a double-valve plate structure, and makes the projection of the exhaust port along the air flow direction completely fall within the projection range of the refrigerant flow hole along the air flow direction. After the refrigerant is discharged from the exhaust port, due to the relatively large opening of the refrigerant flow hole, the refrigerant can directly pass through the lower valve plate without affecting the exhaust, thus having a relatively high exhaust efficiency. At the end of the exhaust, due to the combined action of the pressure difference and the deformation force of the upper valve plate, the upper valve plate moves downward and directly strikes on the lower valve plate. At this time, the lower valve plate generates tremors and forms damping vibration reduction, absorbing part of the impact energy and reducing the impact on the valve seat, thereby effectively reducing the operating noise of the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is an exploded structural schematic diagram of a pump body assembly according to an embodiment of this application;

[0022] Figure 2 is a structural schematic diagram of a pump body assembly according to an embodiment of this application;

[0023] Figure 3 is a dimensional structural schematic diagram of an exhaust valve assembly according to an embodiment of this application;

[0024] Figure 4 is a structural schematic diagram of the lower valve plate of an exhaust valve assembly according to an embodiment of this application;

[0025] Figure 5 is a structural schematic diagram of an exhaust valve assembly according to an embodiment of this application;

[0026] Figure 6 is a structural schematic diagram of the lower valve plate of an exhaust valve assembly according to an embodiment of this application;

[0027] Figure 7 is a structural schematic diagram of an exhaust valve assembly according to an embodiment of this application;

[0028] Figure 8 is a structural schematic diagram of the lower valve plate of an exhaust valve assembly according to an embodiment of this application;

[0029] Figure 9 is an assembled structural schematic diagram of the lower valve plate and the valve seat of an exhaust valve assembly according to an embodiment of this application;

[0030] Figure 10Schematic structural diagram of the lower valve plate of the exhaust valve assembly according to an embodiment of the present application;

[0031] Figure 11 Schematic structural diagram of the lower valve plate of the exhaust valve assembly according to an embodiment of the present application;

[0032] Figure 12 Schematic structural diagram of the lower valve plate of the exhaust valve assembly according to an embodiment of the present application;

[0033] Figure 13 Schematic structural diagram of the valve seat of the exhaust valve assembly according to an embodiment of the present application;

[0034] Figure 14 Schematic structural diagram of the exhaust valve assembly according to an embodiment of the present application;

[0035] Figure 15 Schematic assembly structure diagram of the lower valve plate and the valve seat of the exhaust valve assembly according to an embodiment of the present application;

[0036] Figure 16 Noise comparison diagram of the exhaust valve assembly of the related art and the exhaust valve assembly of the embodiment of the present application at different operating frequencies.

[0037] The reference numerals are shown as:

[0038] 1. Flange; 2. Valve seat; 3. Exhaust port; 4. Upper valve plate; 5. Lower valve plate; 6. Refrigerant flow hole; 7. Vibration damping support foot; 8. Head; 9. Mounting hole; 10. First valve section; 11. Second valve section; 12. Valve plate baffle; 13. Roller; 14. Crankshaft; 15. Sliding vane; 16. Cylinder. Detailed implementation manners

[0039] With reference to Figures 1 to 16 As shown, according to the embodiment of the present application, the exhaust valve assembly includes a flange 1 and an exhaust assembly. The flange 1 is provided with a valve seat 2, the valve seat 2 is provided with an exhaust port 3, the exhaust assembly is arranged on the valve seat 2, the exhaust assembly includes an upper valve plate 4 and a lower valve plate 5, the lower valve plate 5 is arranged on the valve seat 2, the lower valve plate 5 is provided with a refrigerant flow hole 6 corresponding to the exhaust port 3, the projection of the exhaust port 3 along the air flow direction completely falls within the projection range of the refrigerant flow hole 6 along the air flow direction, the upper valve plate 4 can close the refrigerant flow hole 6, and the head 8 of the lower valve plate 5 provided with the refrigerant flow hole 6 is made of a damping material.

[0040] The exhaust valve assembly adopts a double-valve plate structure, and makes the projection of the exhaust port 3 along the air flow direction completely fall within the projection range of the refrigerant flow hole 6 along the air flow direction. After the refrigerant is discharged from the exhaust port 3, due to the relatively large opening of the refrigerant flow hole 6, the refrigerant can directly pass through the lower valve plate 5 without affecting the exhaust, thus having a relatively high exhaust efficiency. At the end of the exhaust, due to the combined action of the pressure difference and the deformation force of the upper valve plate 4, the upper valve plate 4 moves downward and directly strikes on the lower valve plate 5. At this time, the lower valve plate 5 generates tremors and forms damping vibration reduction, absorbing part of the impact energy and reducing the impact on the valve seat 2, thereby effectively reducing the operating noise of the compressor.

[0041] The exhaust valve assembly of the embodiment of the present application effectively reduces the impact force of the valve plate striking the valve seat by using a simple and compact structure. While reducing the noise of the compressor, it can also improve the efficiency of the compressor, and has a wide range of applications, and can be used in rotary compressors, piston compressors, scroll compressors and air compressors.

[0042] In one embodiment, the exhaust port 3 is a round hole, the refrigerant flow hole 6 is a round hole, the exhaust port 3 and the refrigerant flow hole 6 are coaxially arranged, the diameter of the exhaust port 3 is d, and the diameter of the refrigerant flow hole 6 is D, D≥1.05*d.

[0043] The opening diameter D of the refrigerant flow hole 6 on the head 8 is slightly larger than the diameter d of the exhaust port 3, which will not block the exhaust port 3 and affect the normal exhaust process. When the pump body finishes exhausting, the upper valve plate 4 strikes downward on the lower valve plate 5 to close the exhaust port 3. The lower valve plate 5 can adopt a damping material with a relatively soft material such as PA, which can effectively relieve the impact force of the upper valve plate 4.

[0044] In one embodiment, the lower valve plate 5 includes damping support feet 7, and the damping support feet 7 are connected to the head 8. During the downward strike of the upper valve plate 4, it will strike on the damping support feet 7, thereby reducing the impact force of the upper valve plate 4 on the lower valve plate 5, and further reducing the impact force of the upper valve plate 4 on the valve seat 2.

[0045] The number of refrigerant flow holes 6 on the head 8 is at least one, and the number of damping support feet 7 is the same as the number of refrigerant flow holes 6.

[0046] In one embodiment, the head 8 of the lower valve plate 5 is provided with one refrigerant flow hole 6, and the head 8 is connected with one damping support foot 7. This valve plate is a single-damping support foot valve plate structure, and the damping support foot 7 at the tail is strip-shaped, so as to fix the lower valve plate 5 and the valve plate baffle 12 on the valve seat 2 together. The head of the lower valve plate 5 is designed with an arc shape to fully adapt to the structures of the valve seat 2 and the upper valve plate 4 and increase the contact area.

[0047] In order to adapt to the number of exhaust ports 3, the lower valve plate 5 can also be designed as an integral structure with two or more damping feet 7, which can reduce the compressor parts and simplify the assembly process. The damping feet 7 at the tail refer to the strip-shaped brackets with damping functions at the fixed end of the valve plate screw.

[0048] In one embodiment, the damping feet 7 extend along the radial direction of the refrigerant flow hole 6, and the extension line of the damping feet 7 passes through the center of the refrigerant flow hole 6, so that the extension direction of the damping feet 7 can be designed to be consistent with the extension direction of the upper valve plate 4, thereby ensuring that the upper valve plate 4 and the lower valve plate 5 can have a better matching effect, and enabling the lower valve plate 5 to have a better damping effect on the upper valve plate 4.

[0049] In one embodiment, the exhaust assembly further includes a valve plate baffle 12, which is fixed on the valve seat 2, and the upper valve plate 4 and the lower valve plate 5 are located between the valve plate baffle 12 and the valve seat 2. The valve plate baffle 12 is arranged on the outermost side, which can limit the deformation of the upper valve plate 4 and prevent the upper valve plate 4 from being damaged due to excessive deformation, thus forming an effective protection for the upper valve plate 4.

[0050] In one embodiment, an installation hole 9 is provided at one end of the damping foot 7 away from the head 8, and the damping foot 7 is symmetric about the center line connecting the installation hole 9 and the refrigerant flow hole 6. By providing the installation hole 9, it is convenient to fix the upper valve plate baffle 12, the upper valve plate 4 and the lower valve plate 5 together on the valve seat 2 through rivets or fixing bolts.

[0051] In this embodiment, since most of the valve plate materials used for the lower valve plate 5 are plastics with relatively soft materials, in order to prevent it from loosening due to the attenuation of the screw torque caused by tremor during operation, other methods need to be used for fixing. In this embodiment, the riveting method is selected, and the valve plate baffle 12 and the upper and lower valve plates are directly fixed on the valve seat 2 by using rivets. Compared with screw fixation, riveting fixation can prevent the valve plate from loosening caused by torque attenuation and ensure smooth exhaust. In addition, other rigid connection methods can also be used for fixed connection.

[0052] In one embodiment, the lower valve plate 5 can be integrally made of a damping material. The material of the lower valve plate 5 is, for example, plastic, rubber or other flexible materials.

[0053] In one embodiment, the lower valve plate 5 includes a first valve section 10 and a second valve section 11, and the first valve section 10 and the second valve section 11 are spliced together. In this embodiment, a part of the lower valve plate 5 is fixedly connected and basically will not be subjected to much slapping, while the other part is more susceptible to slapping and is more easily damaged. Therefore, a segmented design is adopted for the lower valve plate 5, which can facilitate the replacement of only the head structure after the valve section as the head is damaged, without replacing the other end valve section, thereby reducing the replacement cost. At the same time, the installation during the replacement process is also simpler, and the head of the lower valve plate 5 can be installed without disassembling the upper valve plate 4 and the valve plate baffle 12, thereby improving the installation efficiency.

[0054] In one embodiment, a embedding groove is provided on the first valve section 10, and a protrusion is provided on the second valve section 11, and the protrusion is embedded in the embedding groove.

[0055] The first valve section 10 is provided with a protrusion, and the second valve section 11 is provided with an embedding groove, and the protrusion and the embedding groove are embedded together.

[0056] The shape of the protrusion is, for example, circular or T-shaped, and may also be designed to be other shapes. The shape of the embedding groove is adapted to the shape of the protrusion, ensuring a good matching relationship between the first valve section 10 and the second valve section 11 .

[0057] In one embodiment, the head 8 is located at the second valve section 11, the first valve section 10 is made of a rigid material, and the second valve section 11 is made of a damping material, such as plastic. In this way, the first valve section 10 supported by a rigid material can be used in conjunction with the rivet, which can avoid the problem of the riveted structure damaging the flexible valve sheet, and ensure that the first valve section 10 can be stably installed between the valve sheet baffle 12 and the valve seat 2, and does not need to be replaced for a long time. When the second valve section 11 is damaged, the second valve section 11 can be directly replaced.

[0058] In one embodiment, the length of the first valve section 10 is h, the length of the straight section of the valve plate baffle 12 is H, and h≥H, so that a better valve plate fixing effect can be obtained. The lower valve plate 5 is divided into two parts, one part is a rigid material to ensure that the lower valve plate 5 will not be deformed due to the extrusion of the screws or rivets and the valve plate baffle 12, thereby causing the head of the lower valve plate 5 to tilt and affect the sealing of the exhaust port; the other part is a flexible material to play a role in buffering and vibration reduction.

[0059] The length of the rigid material of the lower valve disc 5 must be greater than or equal to the straight portion of the valve disc baffle 12 (i.e. the portion where the baffle contacts the valve disc) so that the lower valve disc 5 can be firmly fixed; when the length of the rigid material of the lower valve disc 5 is less than the straight portion of the valve disc baffle 12, a portion of the valve disc baffle 12 will be pressed on the flexible material portion of the lower valve disc 5, causing the flexible portion of the lower valve disc 5 to deform and warp.

[0060] In one embodiment, the ratio of the contact length between the rigid material of the lower valve plate 5 and the straight part of the valve plate baffle 12 to the length h of the rigid material of the lower valve plate 5 is 1 / 2 to 1.

[0061] In one embodiment, the damping feet 7 are snap-fixed to the valve seat 2. In this embodiment, the lower valve plate 5 adopts an embedded valve seat structure. The valve seat 2 at the screw fixing end of the tail of the upper valve plate 4 and the tail of the lower valve plate 5 are both designed in the form of snaps. The snaps of the two can be of various structures such as circular and T-shaped. The lower valve plate 5 and the valve seat 2 are combined through the snaps and stably fixed on the valve seat 2.

[0062] The above several structures can firmly fix the lower valve plate 5 on the valve seat 2 without affecting the valve plate itself, and the structure is stable and reliable.

[0063] According to an embodiment of the present application, the compressor includes an exhaust valve assembly, and this exhaust valve assembly is the above-mentioned exhaust valve assembly.

[0064] When the compressor is working normally, the crankshaft 14 rotates to drive the roller 13 to move in the cylinder 16. The roller 13 cooperates with the sliding vane 15 to increase the volume of the suction chamber of the cylinder 16. The low-pressure refrigerant enters the cylinder 16 from the suction port. When the crankshaft 14 rotates to a certain angle, the compressor completes the suction. Thereafter, the volume of the air chamber gradually becomes smaller and enters the state of compressing the refrigerant. The upper valve plate 4 is closed during the suction and compression processes. When the compressed refrigerant reaches the exhaust pressure, the high-pressure gas pushes the upper valve plate 4 upward through the exhaust port 3. Since the refrigerant flow hole 6 in the head 8 of the lower valve plate 5 has a relatively large opening, the gas can directly pass through the lower valve plate 5 without affecting the exhaust. At the end of the exhaust, due to the combined action of the pressure difference and the deformation force of the upper valve plate 4, the upper valve plate 4 moves downward to close the exhaust port 3. The upper valve plate 4 moves downward and directly strikes on the lower valve plate 5. At this time, the lower valve plate 5 generates tremors and flexible deformation to absorb part of the impact energy, thereby reducing the impact on the valve seat 2.

[0065] Combined with reference to Figure 16 As shown, after adopting the exhaust valve assembly of the embodiment of the present application, compared with the exhaust valve assembly of the related art, when the compressor operates in the frequency band above 63HZ, the noise reduction amplitude can reach nearly 20%. Therefore, adopting the exhaust valve assembly of the embodiment of the present application can greatly reduce the noise of the compressor and improve the reliability of the compressor.

[0066] According to an embodiment of the present application, the air conditioner includes an exhaust valve assembly, and this exhaust valve assembly is the above-mentioned exhaust valve assembly.

[0067] It is easy for those skilled in the art to understand that, on the premise of no conflict, the above-mentioned advantageous methods can be freely combined and superimposed.

[0068] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application. The above is only the preferred implementation manner of the present application. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present application, several improvements and variations can still be made, and these improvements and variations should also be regarded as within the protection scope of the present application.

Claims

1. An exhaust valve assembly, characterized in that, It includes a flange (1) and an exhaust assembly. The flange (1) is provided with a valve seat (2). The valve seat (2) is provided with an exhaust port (3). The exhaust assembly is arranged on the valve seat (2). The exhaust assembly includes an upper valve plate (4) and a lower valve plate (5). The lower valve plate (5) is arranged on the valve seat (2). The lower valve plate (5) is provided with a refrigerant flow hole (6) corresponding to the exhaust port (3). The projection of the exhaust port (3) along the air flow direction completely falls within the projection range of the refrigerant flow hole (6) along the air flow direction. The upper valve plate (4) can close the refrigerant flow hole (6). The head (8) of the lower valve plate (5) where the refrigerant flow hole (6) is provided is made of a damping material. The lower valve plate (5) includes a first valve section (10) and a second valve section (11). The first valve section (10) and the second valve section (11) are spliced together. The head (8) is located on the second valve section (11). The first valve section (10) is made of a rigid material. The second valve section (11) is made of a damping material. The exhaust assembly further includes a valve plate baffle (12). The valve plate baffle (12) is fixed on the valve seat (2). The upper valve plate (4) and the lower valve plate (5) are located between the valve plate baffle (12) and the valve seat (2). The length of the first valve section (10) is h, and the straight-line segment length of the valve plate baffle (12) is H, and h≥H.

2. The exhaust valve assembly according to claim 1, wherein The exhaust port (3) is a round hole. The refrigerant flow hole (6) is a round hole. The exhaust port (3) and the refrigerant flow hole (6) are coaxially arranged. The diameter of the exhaust port (3) is d, and the diameter of the refrigerant flow hole (6) is D, and D≥1.05*d.

3. The exhaust valve assembly according to claim 1, characterized in that, The lower valve plate (5) includes damping feet (7). The damping feet (7) are connected to the head (8).

4. The exhaust valve assembly according to claim 3, characterized in that, The number of the refrigerant flow holes (6) on the head (8) is at least one. The number of the damping feet (7) is the same as the number of the refrigerant flow holes (6).

5. The exhaust valve assembly according to claim 4, characterized in that, The damping feet (7) extend radially along the refrigerant flow hole (6), and the extension line of the damping feet (7) passes through the center of the refrigerant flow hole (6).

6. The exhaust valve assembly according to claim 4, wherein, One end of the damping feet (7) far from the head (8) is provided with a mounting hole (9). The damping feet (7) are symmetric about the center connection line of the mounting hole (9) and the refrigerant flow hole (6).

7. The exhaust valve assembly according to claim 1, characterized in that, An embedding groove is provided on the first valve section (10), and a protrusion is provided on the second valve section (11). The protrusion is engaged with the embedding groove. Or, a protrusion is provided on the first valve section (10), and an embedding groove is provided on the second valve section (11). The protrusion is engaged with the embedding groove.

8. The exhaust valve assembly according to claim 3, characterized in that The damping feet (7) are fixedly connected to the valve seat (2) by clamping.

9. A compressor, characterized in that, It includes an exhaust valve assembly. The exhaust valve assembly is the exhaust valve assembly according to any one of claims 1 to 8.

10. An air conditioner, characterized in that, It includes an exhaust valve assembly. The exhaust valve assembly is the exhaust valve assembly according to any one of claims 1 to 8.

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