Valve group structure and compressor

Abstract

The present invention discloses a valve group structure and a compressor, relating to the technical field of compressors. The valve seat structure includes a valve seat, an exhaust valve plate, a limiter, a fastener, and an elastic member. The limiter includes a limiting body, a damping body, and an additional body. The limiting body includes a first mounting portion and a first bending portion, and the first bending portion bends and extends toward the side away from the exhaust port. The damping body is connected to the first bending portion. The additional body includes a second mounting portion and a second bending portion, the second bending portion is connected to the damping body, one end of the second mounting portion is connected to the second bending portion, and the other end is spaced from the first mounting portion. The elastic modulus of the damping body is less than that of the limiting body and the additional body. The fastener passes through the first mounting portion and the second mounting portion and is fixed to the valve seat. The elastic member is sleeved on the fastener and is disposed between the first mounting portion and the second mounting portion. The present invention can effectively attenuate the vibration response generated when the exhaust valve plate strikes the limiter, and has a good noise reduction effect.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, and particularly to a valve group structure and a compressor. Background Art

[0002] In related technologies, a compressor has the characteristic of intermittent exhaust, which causes the exhaust valve plate to periodically strike the stopper, exciting the stopper to generate relatively large vibrations, and transmitting them to the housing through structures such as bearings, resulting in the radiated noise of the housing and making the operating noise of the compressor relatively large. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. For this purpose, the present invention provides a valve seat structure that can effectively attenuate the vibration response generated when the exhaust valve plate strikes the stopper, and has a good noise reduction effect.

[0004] The present invention also provides a compressor having the above valve seat structure.

[0005] According to a valve seat structure of the first aspect embodiment of the present invention, it includes: a valve seat provided with a fixing portion and an exhaust port; an exhaust valve plate disposed on the exhaust side of the exhaust port; a stopper disposed on the side of the exhaust valve plate away from the exhaust port, the stopper includes a limiting body, a damping body, and an additional body, the limiting body includes a first mounting portion and a first bending portion, one end of the first bending portion is connected to the first mounting portion, and the other end bends and extends away from the exhaust port; the damping body is connected to the side of the first bending portion away from the exhaust port; the additional body includes a second mounting portion and a second bending portion, the second bending portion is connected to the side of the damping body away from the first bending portion, one end of the second mounting portion is connected to the second bending portion, and the other end is spaced from the first mounting portion; the elastic modulus of the damping body is less than the elastic modulus of the limiting body and less than the elastic modulus of the additional body; a fastener passing through the first mounting portion and the second mounting portion and fixed to the fixing portion; an elastic member sleeved on the fastener and disposed between the first mounting portion and the second mounting portion.

[0006] The valve seat structure according to the embodiment of the present invention has at least the following beneficial effects:

[0007] By providing a stopper including a limiting body, a damping body, and an additional body, the first bending portion of the limiting body, the damping body, and the second bending portion of the additional body are stacked in sequence, and the elastic modulus of the damping body is less than that of the limiting body and the additional body. An elastic member is embedded in the space between the first mounting portion of the limiting body and the second mounting portion of the accessory body; when the exhaust valve flap strikes the limiting body, the generated vibration is transmitted to the damping body with a smaller elastic modulus, and tensile and compressive deformations occur inside the damping body to absorb part of the vibration. Moreover, the damping body and the elastic member are respectively arranged at the free end and the fixed end of the stopper, forming a parallel structure, which broadens the vibration reduction frequency band and improves the vibration reduction effect; the damping body and the elastic member form a dynamic vibration absorber to absorb the vibration from the limiting body and dissipate it through the additional body with a larger elastic modulus, thereby reducing the vibration transmission rate of the stopper to the valve seat; the first mounting portion and the second mounting portion are penetrated and fixed to the valve seat by fasteners, thereby realizing the stable connection between the stopper and the valve seat. The elastic member is sleeved on the fastener and is used to support the first mounting portion and the second mounting portion, which can increase the flexibility between the stopper and the valve seat and has a buffer vibration reduction effect. Under the action of the elastic member, the deformation amount of the damping body can be limited to prevent the damping body from being in a tensile state all the time and affecting the vibration reduction effect, enabling the damping body to deform through the displacement of the limiting body and the additional body, dissipating the vibration energy, attenuating the vibration at the free end of the stopper, reducing the medium and high frequency noise of the stopper, and making the noise reduction effect of the stopper better.

[0008] In some embodiments of the present invention, the elastic modulus of the limiting body is E1, and the elastic modulus of the damping body is E2, satisfying: 0.001 ≤ E2 / E1 ≤ 0.01.

[0009] In some embodiments of the present invention, the elastic modulus of the damping body is E2, and the elastic modulus of the additional body is E3, satisfying: 0.001 ≤ E2 / E3 ≤ 0.01.

[0010] In some embodiments of the present invention, the damping body is a layered structure and is located at the first bending portion.

[0011] In some embodiments of the present invention, the damping body is made of rubber or plastic.

[0012] In some embodiments of the present invention, the elastic member is a spring, and the two ends of the spring respectively abut against the first mounting portion and the second mounting portion.

[0013] In some embodiments of the present invention, the height of the spring is H 21 , and the thickness of the damping body is H 22 , satisfying: 0 < H 21 / H 22 ≤ 1.2.

[0014] According to some embodiments of the present invention, the thickness of the limiting body is H1, and the thickness of the additional body is H3, satisfying: 0.8≤H1 / H3≤1.2.

[0015] According to some embodiments of the present invention, the thickness of the damping body is H22, satisfying: 1 / H 22 =c*(1 / H3+1 / H1), c is a constant and satisfies: 0.5≤c≤1.

[0016] According to some embodiments of the present invention, the limiting body, the damping body and the additional body are fixed by bonding, riveting or screwing.

[0017] The compressor according to the second embodiment of the present invention comprises the valve seat structure described in the above embodiment.

[0018] The compressor according to the embodiment of the present invention has at least the following beneficial effects:

[0019] A valve seat structure of the first aspect embodiment is adopted, and the valve seat structure is provided with a limiter including a limiter, a damping body and an additional body, the first curved portion of the limiter, the damping body and the second curved portion of the additional body are stacked in sequence, and the elastic modulus of the damping body is smaller than the elastic modulus of the limiter and the elastic modulus of the additional body, and an elastic member is embedded in the space between the first mounting portion of the limiter and the second mounting portion of the additional body; when the exhaust valve plate hits the limiter, the generated vibration is transmitted to the damping body with a smaller elastic modulus, and the interior of the damping body generates tensile and compressive deformations, thereby absorbing part of the vibration, and the damping body and the elastic member are respectively arranged at the free end and the fixed end of the limiter to form a parallel structure, thereby broadening the vibration reduction frequency band and improving the vibration reduction effect; the damping body and the elastic member form a dynamic vibration absorbing device, which absorbs The vibration from the limiter is absorbed and dissipated through an additional body with a larger elastic modulus, thereby reducing the vibration transmission rate from the limiter to the valve seat; the first mounting part and the second mounting part are penetrated and fixed to the valve seat by fasteners, thereby realizing a stable connection between the limiter and the valve seat; the elastic member is sleeved on the fastener and is used to support the first mounting part and the second mounting part, which can increase the flexibility between the limiter and the valve seat and has a buffering and vibration reduction effect; the deformation of the damping body can be limited under the action of the elastic member to prevent the damping body from being in a stretched state all the time and affecting the vibration reduction effect, so that the damping body can be deformed through the displacement of the limiter and the additional body, thereby dissipating the vibration energy, attenuating the vibration of the free end of the limiter, reducing the mid- and high-frequency noise of the limiter, and making the noise reduction effect of the limiter better.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below in conjunction with the accompanying drawings and embodiments, where:

[0022] Figure 1 It is a schematic structural diagram of a compressor according to an embodiment of the present invention;

[0023] Figure 2 is Figure 1 a top view schematic diagram of the valve seat structure in

[0024] Figure 3 is Figure 2 a cross-sectional schematic diagram of the valve seat structure shown in

[0025] Figure 4 is Figure 3 an enlarged view of part A in

[0026] Figure 5 is a cross-sectional schematic diagram of a limiter according to an embodiment of the present invention;

[0027] Figure 6 is Figure 5 a three-dimensional schematic diagram of the limiter shown in

[0028] Figure 7 is a comparison chart of the noise values of the compressor according to the embodiment of the present invention and the compressor of the related art.

[0029] Reference numerals in the drawings:

[0030] Housing 100; Exhaust pipe 110;

[0031] Motor assembly 200; Rotor 210; Stator 220;

[0032] Pump body assembly 300; Cylinder 310; Main bearing 320; Auxiliary bearing 330; Crankshaft 340;

[0033] Accumulator 400;

[0034] Valve seat structure 500; Valve seat 510; Exhaust port 511; Fixed part 512; Exhaust valve plate 520; Limiter 530; Limiting body 531; First mounting part 5311; First bending part 5312; First through hole 5313; Damping body 532; Additional body 533; Second mounting part 5331; Second bending part 5332; Second through hole 5333; Fastener 540; Elastic member 550. Detailed implementation manners

[0035] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0036] In the description of the present invention, it should be understood that with regard to the orientation description, such as the orientation or positional relationship indicated by up, down, etc., it is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0037] In the description of the present invention, "a plurality of" means more than two. If the first and the second are described, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features or implicitly specifying the sequence relationship of the indicated technical features.

[0038] In the description of the present invention, unless otherwise clearly defined, terms such as "set", "installed", "connected", etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0039] Referring to Figure 1 As shown, a compressor according to an embodiment of the present invention is used in a refrigeration system or a heat pump system, such as household appliances like air conditioners and air source heat pumps. For example, in the refrigeration system cycle of an air conditioner, the compressor serves as the power component for the refrigerant cycle. The compressor compresses the low-temperature and low-pressure gaseous refrigerant to form a high-temperature and high-pressure gaseous refrigerant, and then successively releases heat through the condenser, reduces pressure through the throttling device, absorbs heat through the evaporator, and then re-enters the compressor for the next refrigerant cycle.

[0040] Referring to Figure 1As shown, a compressor according to an embodiment of the present invention is a rotary compressor. The compressor according to an embodiment of the present invention includes a housing 100, a motor assembly 200, a pump body assembly 300, and a liquid receiver 400. The motor assembly 200 and the pump body assembly 300 are located inside the housing 100, and the liquid receiver 400 is provided outside the housing 100. It can be understood that the motor assembly 200 includes a rotor 210 and a stator 220, and the stator 220 and the pump body assembly 300 are fixed to the inner wall of the housing 100. The pump body assembly 300 includes a cylinder 310, a main bearing 320, a sub-bearing 330, and a crankshaft 340. The cylinder 310 forms a compression chamber (not shown in the figure). The main bearing 320 and the sub-bearing 330 are respectively connected to two ends of the cylinder 310 along the axial direction of the housing 100, so as to seal both ends of the compression chamber. The refrigerant of the refrigeration system enters the compressor through the liquid receiver 400. The liquid receiver 400 provides gaseous refrigerant for the pump body assembly 300. The rotor 210 is connected to the crankshaft 340, so as to drive the crankshaft 340 to rotate through the motor assembly 200. The crankshaft 340 rotates stably under the support of the main bearing 320 and the sub-bearing 330. A piston (not shown in the figure) is sleeved outside the crankshaft 340. The piston is arranged inside the cylinder 310 and performs an eccentric rotational motion relative to the center of the cylinder 310, so as to cause the compression chamber to change periodically. The pump body assembly 300 completes the processes of suction, compression, and exhaust. The compressed gaseous refrigerant enters the refrigeration system cycle again through the exhaust pipe 110 at the top of the housing 100.

[0041] Referring to Figure 1 and Figure 2 As shown, for a compressor according to an embodiment of the present invention, the pump body assembly 300 is provided with a valve seat structure 500, and the pump body assembly 300 realizes the exhaust of the compression chamber through the valve seat structure 500. The valve seat structure 500 according to an embodiment of the present invention is arranged on the main bearing 320. It should be noted that the valve seat structure 500 can also be arranged on the sub-bearing 330, a partition plate (not shown in the figure), and other structures, and will not be specifically limited here.

[0042] Referring to Figure 2 and Figure 3 As shown, the valve seat structure 500 according to an embodiment of the present invention includes a valve seat 510, an exhaust valve plate 520, and a limiter 530. The valve seat 510 is integrally processed with the main bearing 320 and is a groove structure formed by milling; the valve seat 510 can also be fixed to the main bearing 320 by welding or other means. The valve seat 510 is provided with an exhaust port 511 communicating with the compression chamber. The exhaust port 511 is arranged at one end of the valve seat 510 along the length direction, and the exhaust port 511 is used to discharge the compressed high-temperature and high-pressure gaseous refrigerant.

[0043] Referring to Figure 3As shown, it can be understood that the valve seat 510 is further provided with a fixing part 512, which is arranged at the other end of the valve seat 510 along the length direction. The fixing part 512 is used to fix the exhaust valve plate 520 and the stopper 530, and the fixing part 530 can be configured as a mounting hole structure. The exhaust valve plate 520 and the stopper 530 are fixedly connected to the fixing part 512 in sequence along the air flow direction of the exhaust port 511. The exhaust valve plate 520 and the stopper 530 can be connected to the fixing part 512 through fasteners 540 such as rivets and bolts, so as to achieve a stable connection with the valve seat 510. The exhaust valve plate 520 covers one end of the exhaust port 511 far from the compression chamber, that is Figure 3 above the exhaust port 511 in Figure 3 above the exhaust valve plate 520 in

[0044] It should be noted that during each exhaust process of the exhaust port 511, the gaseous refrigerant will drive the exhaust valve plate 520 to impact the stopper 530, which will cause the stopper 530 to generate a large vibration. Therefore, to solve the above problems, the stopper 530 of the embodiment of the present invention includes a limiting body 531, a damping body 532 and an additional body 533. Referring to Figure 3 and Figure 5 As shown, it can be understood that the structure of the limiting body 531 is basically the same as that of the stopper 530 of a traditional compressor. The limiting body 531 includes a first mounting part 5311 and a first bending part 5312 that are connected and form an integral structure. One end of the first bending part 5312 is connected to the first mounting part 5311, and the other end bends and extends away from the exhaust port 511. In the embodiment of the present invention, the first mounting part 5311 is formed with a first through hole 5313. The additional body 533 includes a second mounting part 5331 and a second bending part 5332 that are connected. The second mounting part 5331 and the second bending part 5332 can form an integral structure, or achieve a stable connection through welding, bonding and other methods. One end of the second mounting part 5331 is connected to the second bending part 5332, and the other end is arranged at an interval from the first mounting part 5311. In the embodiment of the present invention, the second mounting part 5331 is formed with a second through hole 5333. The damping body 532 is arranged between the first bending part 5312 and the second bending part 5332, and is respectively connected to the first bending part 5312 and the second bending part 5332. The first bending part 5312, the damping body 532 and the second bending part 5332 are stacked in sequence to form a structure similar to a sandwich.

[0045] Referring to Figure 3 and Figure 4As shown in the figure, the valve seat structure 500 of the embodiment of the present invention further includes a fastener 540 and an elastic member 550. The fastener 540 can be a rivet or a screw, etc. The fastener 540 passes through the first through hole 5313 of the first mounting portion 5311 and the second through hole 5333 of the second mounting portion 5331 and is fixed to the third through hole of the fixing portion 512, thereby realizing the stable connection between the limiter 530 and the valve seat 510. The elastic member 550 can be a spring or other elements with elastic deformation characteristics. The elastic member 550 is sleeved on the outer peripheral wall of the fastener 540 and is clamped between the first mounting portion 5311 and the second mounting portion 5331. The elastic member 550 is in a state where both ends respectively abut against the first mounting portion 5311 and the second mounting portion 5331. Of course, as another embodiment, both ends of the elastic member 550 can also be respectively connected to the first mounting portion 5311 and the second mounting portion 5331.

[0046] It can be understood that the elastic modulus of the damping body 532 is less than that of the limiting body 531, and the elastic modulus of the damping body 532 is less than that of the additional body 533. When the exhaust valve plate 520 strikes the limiting body 531, the generated vibration is transmitted to the damping body 532 with a smaller elastic modulus, and the damping body 532 can absorb part of the vibration. It should be noted that when the limiting body 531 undergoes bending deformation, tensile and compressive deformations are generated in the damping body 532, that is, alternating tensile and compressive stresses and strains are generated, and the strain lags behind the stress, so that the vibration energy of the limiting body 531 is converted into heat energy dissipated by the damping body 532, thereby achieving the purpose of vibration reduction and noise reduction.

[0047] Moreover, the damping body 532 and the elastic member 550 are respectively arranged at the free end and the fixed end of the limiter 530, forming a parallel structure, broadening the vibration reduction frequency band and improving the vibration reduction effect. The damping body 532 and the elastic member 550 form a dynamic vibration absorber, which is used to absorb the vibration from the limiting body 531 and dissipate it through the additional body 533 with a larger elastic modulus, thereby reducing the vibration transmission rate of the limiter 530 transmitted to the valve seat 510. The elastic member 550 can increase the flexibility between the limiter 530 and the valve seat 510, and has a buffer vibration reduction effect. Under the action of the elastic member 550, the deformation amount of the damping body 532 can be limited, preventing the damping body 532 from being in a stretched state all the time and affecting the vibration reduction effect, so that the damping body 532 can deform through the displacement of the limiting body 531 and the additional body 533, dissipate the vibration energy, attenuate the vibration of the free end of the limiter 530, reduce the medium and high frequency noise of the limiter 530, make the noise reduction effect of the limiter 530 better, and further reduce the vibration and noise of the compressor.

[0048] Refer to Figure 5 and Figure 6As shown, it can be understood that the elastic modulus of the limiting body 531 is defined as E1, and the elastic modulus of the damping body 532 is defined as E2. The elastic modulus E1 of the limiting body 531 and the elastic modulus E2 of the damping body 532 satisfy: 0.001 ≤ E2 / E1 ≤ 0.01. When the elastic modulus E2 of the damping body 532 is much smaller than the elastic modulus E1 of the limiting body 531 within the above range, better dissipation effect can be obtained when vibration is transmitted from the limiting body 531 to the damping body 532, thereby improving the vibration damping ability of the damping body 532.

[0049] Referring to Figure 5 and Figure 6 As shown, it can be understood that the elastic modulus of the damping body 532 is defined as E2, and the elastic modulus of the additional body 533 is defined as E3. The elastic modulus E2 of the damping body 532 and the elastic modulus E3 of the additional body 533 satisfy: 0.001 ≤ E2 / E3 ≤ 0.01. When the elastic modulus E2 of the damping body 532 is much smaller than the elastic modulus E3 of the additional body 533 within the above range, the vibration of the dynamic vibration absorber can be amplified, so that the vibration generated by the collision of the exhaust valve plate 520 with the limiter 530 is dissipated during the vibration of the additional body 533, thereby facilitating the structural loss factor of the limiter 530 to be maintained at a relatively high level. Moreover, the elastic modulus E2 of the damping body 532 is much smaller than the elastic modulus E1 of the limiting body 531 and the elastic modulus E3 of the additional body 533, enabling the damping body 532 to deform through the displacements of the limiting body 531 and the additional body 533, dissipating more vibration energy and further attenuating the vibration of the free end of the limiter 530.

[0050] Referring to Figure 5 and Figure 6 As shown, it can be understood that the damping body 532 is a layered structure, and the damping body 532 is distributed on the first bending portion 5312, and can utilize the structure of the limiting body 531 to be distributed at the position with a relatively large vibration amplitude of the limiting body 531, thereby dissipating the vibration energy of the limiting body 531 to the greatest extent. The damping body 532 is arranged between the first bending portion 5312 and the second bending portion 5332, which can improve the connection effect between the limiting body 531 and the accessory body and enhance the structural stability of the dynamic vibration absorber.

[0051] Referring to Figure 5 As shown, it can be understood that the damping body 532 can be made of rubber or plastic, which is more convenient to process, has a low production cost, and can meet the parameter requirements of the elastic modulus.

[0052] It can be understood that as another embodiment, the damping body 532 can be a multi-layer structure, and the materials of each layer can be the same or different, as long as they all meet the parameter requirements of the elastic modulus.

[0053] Referring to Figure 5As shown, it can be understood that the episome 533 can be a layered structure, that is, the episome 533 can be one or more layered structures. When the episome 533 is a multi-layered structure, the materials of each layer can be the same or different, as long as the parameter requirements of the elastic modulus are satisfied.

[0054] Referring to Figure 5 As shown, it can be understood that the elastic member 550 in the embodiment of the present invention uses a spring, and both ends of the spring respectively abut against the first mounting portion 5311 and the second mounting portion 5331. The structure of the spring is durable, easy to assemble, and has low production costs. Moreover, the spring can meet the needs of the limiter 530 to achieve the above functions.

[0055] Referring to Figure 5 As shown, it can be understood that the height of the spring is the length of the spring in the free state, and this parameter is defined as H 21 (not shown in the figure), the thickness of the damping body 532 is H 22 , the height H of the spring 21 and the thickness H of the damping body 532 22 satisfy: 0 < H 21 / H 22 ≤ 1.2. Within the above parameter range, the spring located between the first mounting portion 5311 and the second mounting portion 5331 is in a compressed state, which can better control the vibration amplitude of the episome 533, limit the deformation amount of the front end of the damping body 532, prevent the damping body 532 from being in a tensile state all the time, and ensure the vibration damping effect of the limiter 530. When it is greater than the above parameter range, it will cause the deformation amount of the front end of the damping body 532 to be too large, and in severe cases, it will even cause the damping body 532 to become detached, which is not conducive to the long-term use of the limiter 530.

[0056] It can be understood that in the embodiment of the present invention, the spring can be compressed and installed between the first mounting portion 5311 and the second mounting portion 5331, so that the spring has a pre-tightening force under pressure, which is more convenient for assembly.

[0057] Referring to Figure 5 As shown, it can be understood that the thickness of the limiting body 531 is defined as H1, and the thickness of the episome 533 is defined as H3. The thickness H1 of the limiting body 531 and the thickness H3 of the episome 533 satisfy: 0.8 ≤ H1 / H3 ≤ 1.2. Within the above parameter range, the limiter 530 can form a symmetric damping and vibration reduction structure, making the overall stiffness of the limiter 530 reach the best, which is beneficial to improving the loss factor of the damping and vibration reduction structure and enhancing the vibration damping and noise reduction effects of the limiter 530.

[0058] Referring to Figure 5 As shown, it can be understood that the thickness H of the damping body 532 22, the thickness H1 of the limiting body 531 and the thickness H3 of the additional body 533 satisfy: 1 / H 22 = c * (1 / H3 + 1 / H1), where c is a constant and satisfies: 0.5 ≤ c ≤ 1. Within the above parameter range, the damper 530 can form a better damping and vibration reduction structure, making the overall stiffness of the damper 530 reach the best, which is beneficial to improving the loss factor of the damping and vibration reduction structure, better dissipating the vibration energy of the damper 530, and enhancing the vibration reduction and noise reduction effects of the damper 530.

[0059] Referring to Figure 5 and Figure 6 as shown, it can be understood that the limiting body 531 and the damping body 532 are fixed by bonding, riveting or screwing, so as to achieve the stable connection between the limiting body 531 and the damping body 532, ensuring the overall vibration reduction effect of the damper 530. The damping body 532 and the additional body 533 are fixed by bonding, riveting or screwing, so as to achieve the stable connection between the additional body 533 and the damping body 532, ensuring the overall vibration reduction effect of the damper 530. It can be understood that the limiting body 531, the damping body 532 and the accessory body can also be directly penetrated and fixed by rivets or screws, so as to achieve a more stable connection. The specific installation method is selected according to the actual product and will not be limited here.

[0060] Referring to Figure 1As shown in the figure, a compressor according to an embodiment of the present invention includes the valve seat structure 500 of the above embodiment. The compressor according to the embodiment of the present invention adopts the valve seat structure 500 of the embodiment of the first aspect. The valve seat structure 500 is provided with a stopper 530 including a limiting body 531, a damping body 532, and an additional body 533. The first bending portion 5312 of the limiting body 531, the damping body 532, and the second bending portion 5332 of the additional body 533 are sequentially stacked. The elastic modulus of the damping body 532 is less than the elastic modulus of the limiting body 531 and the elastic modulus of the additional body 533. An elastic member 550 is embedded in the space between the first mounting portion 5311 of the limiting body 531 and the second mounting portion 5331 of the accessory body. When the exhaust valve plate 520 strikes the limiting body 531, the generated vibration is transmitted to the damping body 532 with a smaller elastic modulus, and tensile and compressive deformations are generated inside the damping body 532 to absorb part of the vibration. Moreover, the damping body 532 and the elastic member 550 are respectively arranged at the free end and the fixed end of the stopper 530 to form a parallel structure, broadening the vibration reduction frequency band and improving the vibration reduction effect. The damping body 532 and the elastic member 550 form a dynamic vibration absorber to absorb the vibration from the limiting body 531 and dissipate it through the additional body 533 with a larger elastic modulus, thereby reducing the vibration transmission rate of the stopper 530 to the valve seat 510. The first mounting portion 5311 and the second mounting portion 5331 are penetrated and fixed to the valve seat 510 by a fastener 540, thereby realizing the stable connection between the stopper 530 and the valve seat 510. The elastic member 550 is sleeved on the fastener 540 and used to support the first mounting portion 5311 and the second mounting portion 5331, which can increase the flexibility between the stopper 530 and the valve seat 510 and has a buffering and vibration reduction effect. Under the action of the elastic member 550, the deformation amount of the damping body 532 can be limited to prevent the damping body 532 from being in a stretched state all the time and affecting the vibration reduction effect, so that the damping body 532 can deform through the displacement of the limiting body 531 and the additional body 533, dissipate the vibration energy, attenuate the vibration at the free end of the stopper 530, reduce the medium and high frequency noise of the stopper 530, and make the noise reduction effect of the stopper 530 better.

[0061] Figure 7 It is a comparison chart of the noise values of the compressor according to the embodiment of the present invention and the compressor of the related art at different frequency bands. Refer to Figure 7 It can be clearly shown that, compared with the compressor of the related art, the compressor according to the embodiment of the present invention has obvious improvement in the noise values in the frequency bands of 1250 to 4000 and 10000 to 20000, can effectively reduce the medium and high frequency noise of the compressor, and makes the noise reduction effect of the compressor better.

[0062] Since the compressor adopts all the technical solutions of the valve seat structure 500 of the above embodiment, it has at least all the beneficial effects brought by the technical solutions of the above embodiment, which will not be elaborated here.

[0063] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the scope of knowledge possessed by those of ordinary skill in the art.

Claims

1. Valve seat structure, characterized in that, Comprising: A valve seat, provided with a fixing portion and an exhaust port; An exhaust valve plate, arranged on the exhaust side of the exhaust port; A limiter, arranged on the side of the exhaust valve plate away from the exhaust port, the limiter includes a limiting body, a damping body and an additional body, the limiting body includes a first mounting portion and a first bending portion, one end of the first bending portion is connected to the first mounting portion, and the other end bends and extends towards the side away from the exhaust port; the damping body is connected to the side of the first bending portion away from the exhaust port; the additional body includes a second mounting portion and a second bending portion, the second bending portion is connected to the side of the damping body away from the first bending portion, one end of the second mounting portion is connected to the second bending portion, and the other end is arranged at an interval from the first mounting portion; the elastic modulus of the damping body is less than the elastic modulus of the limiting body and less than the elastic modulus of the additional body; A fastener, passing through the first mounting portion and the second mounting portion and fixed to the fixing portion; An elastic member, sleeved on the fastener and arranged between the first mounting portion and the second mounting portion; The damping body is a layered structure and is located at the first bending portion; The elastic member is a spring, and two ends of the spring respectively abut against the first mounting portion and the second mounting portion; The height of the spring is H 21 , where the height of the spring is the length of the spring in the free state, and the thickness of the damping body is H 22 , satisfying: 0 < H 21 / H 22 ≤1.2 2. The valve seat structure according to claim 1, characterized in that: The elastic modulus of the limiting body is E1, and the elastic modulus of the damping body is E2, satisfying: 0.001≤E2 / E1≤0.

01.

3. The valve seat structure according to claim 1 or 2, characterized in that: The elastic modulus of the damping body is E2, and the elastic modulus of the additional body is E3, satisfying: 0.001≤E2 / E3≤0.

01.

4. The valve seat structure according to claim 1, characterized in that: The damping body is made of rubber or plastic.

5. The valve seat structure according to claim 1, characterized in that: The thickness of the limiting body is H1, and the thickness of the additional body is H3, satisfying: 0.8≤H1 / H3≤1.

2.

6. The valve seat structure according to claim 5, characterized in that: The thickness of the damping body is H 22 , satisfying: 1 / H 22 = c*(1 / H3 + 1 / H1), where c is a constant and satisfies: 0.5 ≤ c ≤ 1.

7. The valve seat structure according to claim 1, characterized in that: The limiting body, the damping body and the additional body are fixed by bonding, riveting or screwing.

8. Compressor, characterized in that: Including the valve seat structure according to any one of claims 1 to 7.

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