Lift limiter, exhaust assembly and compressor

Abstract

The utility model provides a lift limiting stopper, an exhaust assembly and a compressor. The lift limiting stopper comprises a fixed section and a movable section, the upwarp section is arranged on one side of the fixed section, the upwarp section is provided with a first limiting surface and a second limiting surface, the first limiting surface is connected with the second limiting surface, the first limiting surface is close to the fixed section relative to the second limiting surface, and the first limiting surface is a curved surface and the second limiting surface is a plane in the direction from the fixed section to the upwarp section. According to the lift limiter provided by the utility model, not only can the noise reduction requirement of the compressor be met, but also the performance requirement of the compressor can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of compressors, in particular to a lift limiter, an exhaust component and a compressor. Background Art

[0002] In related technology, compressor exhaust assemblies typically utilize a reed-type exhaust valve. This type of assembly typically includes a valve disc, a lift limiter, and a valve seat. The valve disc opens and closes the exhaust port based on the pressure differential between the inside and outside of the compressor's compression chamber, achieving both compression and exhaust. A lift limiter is located on the side of the valve disc facing away from the valve seat to limit the height to which the valve disc can open.

[0003] The function of the lift limiter is that when the lift is large, the exhaust pressure loss will decrease, but the impact speed of the exhaust valve plate on the valve seat will increase when it is closed, the noise will worsen, and the impact strength and fatigue strength of the exhaust valve plate may cause reliability problems. When the lift is small, the noise situation is better, but the exhaust resistance will increase, which will affect the performance of the compressor. Utility Model Content

[0004] The utility model aims to at least solve or improve the technical problem in the prior art that the lift limiter cannot take into account both noise reduction and exhaust effect.

[0005] To this end, a first aspect of the present utility model provides a lift limiter.

[0006] A second aspect of the present invention provides an exhaust assembly.

[0007] A third aspect of the present invention provides a compressor.

[0008] In view of this, according to the first aspect of the utility model, the utility model proposes a lift limiter, comprising: a fixed section; an upturned section, which is arranged on one side of the fixed section, the upturned section having a first limiting surface and a second limiting surface, the first limiting surface and the second limiting surface are connected, the first limiting surface is close to the fixed section relative to the second limiting surface, and along the direction from the fixed section to the upturned section, the first limiting surface is a curved surface and the second limiting surface is a flat surface.

[0009] The lift limiter proposed by the utility model includes a fixed section and an upward section connected thereto, the fixed section is used to fix the lift limiter, and the upward section is arranged on one side of the fixed section, and the upward section has a first limiting surface and a second limiting surface connected thereto, the first limiting surface is close to the fixed section, and the second limiting surface is away from the fixed section. Along the direction from the fixed section to the upward section, the first limiting surface is a curved surface. Since the exhaust valve disc is naturally in a curved state when it is raised, setting the first limiting surface to a curved surface is more in line with the curved shape of the exhaust valve disc when it is raised, which can effectively limit the lift of the exhaust valve disc, thereby reducing the noise generated by the exhaust valve disc hitting the valve seat, and the second limiting surface is a plane, which can ensure that the exhaust valve disc has sufficient lift under high-frequency working conditions, thereby ensuring the performance of the compressor. As mentioned above, by setting the limiting surfaces at both ends, the lift limiter can meet both the noise reduction requirements and the performance requirements of the compressor.

[0010] In addition, the lift limiter in the above technical solution provided by the present invention may also have the following additional technical features:

[0011] In some embodiments, optionally, the fixing section has a mounting surface, the mounting surface is tangent to the first limiting surface; and the second limiting surface is tangent to the first limiting surface.

[0012] In this embodiment, the fixed section has a mounting surface. When the lift limiter is installed, the mounting surface fits the valve seat or the exhaust valve plate. The mounting surface is tangent to the first limiting surface, so that the transition between the mounting surface and the first limiting surface is smoother and more in line with the bending shape of the exhaust valve plate when it is raised, thereby ensuring the noise reduction effect. The second limiting surface is tangent to the first limiting surface, so that the transition between the first limiting surface and the second limiting surface is smoother, reducing the impact of changes in the first limiting surface and the second limiting surface on the exhaust valve plate, ensuring that the exhaust valve plate can be raised smoothly, and helping to reduce fatigue of the exhaust valve plate.

[0013] In some embodiments, optionally, the first limiting surface includes at least two sub-limiting surfaces, each of which is a curved surface; and the at least two sub-limiting surfaces are distributed along the direction from the fixed segment to the upward-curved segment.

[0014] In this embodiment, in the direction from the fixed section to the upward section, the first limit surface includes at least two sub-limit surfaces, and all the sub-limit surfaces are curved surfaces. Under different working conditions of the compressor, the degree of bending of the exhaust valve plate when it is raised is different. Therefore, the first limit surface is set to at least two sub-limit surfaces to adapt to the exhaust valve plate under different working conditions, so that better noise reduction effect can be achieved under different working conditions.

[0015] In some embodiments, optionally, it further includes: at least one groove, provided in the upward section, the groove being located on the first limiting surface and / or the second limiting surface.

[0016] In this embodiment, the lift limiter also includes at least one groove, which is arranged on the upward section and is located at the first limit surface and / or the second limit surface, thereby improving the gas resistance encountered by the exhaust valve plate during the rising process, and can also improve the viscous resistance encountered by the exhaust valve plate during the descending process, thereby improving the performance of the compressor.

[0017] In some embodiments, optionally, the groove includes: a longitudinal groove extending along a direction from the upward section to the fixed section; and / or a transverse groove extending along a direction perpendicular to the direction from the upward section to the fixed section.

[0018] In this embodiment, the groove includes a longitudinal groove, which extends along the direction from the upward section to the fixed section, that is, along the direction from the upward section to the fixed section, the longitudinal groove is opened on the first limiting surface and the second limiting surface, thereby ensuring the effect of improving the operating ability of the exhaust valve plate.

[0019] The groove includes a transverse groove, which extends in a direction perpendicular to the upward section to the fixed section, that is, along the direction perpendicular to the upward section to the fixed section, the transverse groove is opened on the first limiting surface and / or the second limiting surface, thereby ensuring the effect of improving the operating ability of the exhaust valve plate.

[0020] In some embodiments, optionally, along the direction perpendicular to the fixed section to the upturned section, the size of the longitudinal groove is b1; b1 is greater than or equal to 2 mm, and the depth of the longitudinal groove is h1, h1 is greater than or equal to 0.5 mm and less than or equal to b1.

[0021] In this embodiment, along the direction perpendicular to the fixed section to the upward-curved section, the size of the longitudinal groove is b1, b1 is greater than or equal to 2 mm, and the depth of the longitudinal groove is h1, h1 is greater than or equal to 0.5 mm and less than or equal to b1, thereby ensuring that the longitudinal groove can accommodate sufficient gas to enhance the effect of improving the gas resistance encountered by the exhaust valve disc during the rising process, and improving the effect of improving the viscous resistance encountered by the exhaust valve disc during the descending process.

[0022] Furthermore, the above arrangement can ensure that the lift limiter has sufficient strength.

[0023] In some embodiments, optionally, along the direction from the fixed section to the upward-curving section, the size of the transverse groove is b2, b2 is greater than or equal to 2 mm; the depth of the transverse groove is h2, h2 is greater than or equal to 0.5 mm, and less than or equal to b2.

[0024] In this embodiment, the size of the transverse groove along the direction from the fixed section to the upward section is b2, b2 is greater than or equal to 2 mm, and the depth of the transverse groove is h2, h2 is greater than or equal to 0.5 mm and less than or equal to b2, thereby ensuring that the transverse groove can accommodate sufficient gas to enhance the effect of improving the gas resistance encountered by the exhaust valve plate during the rising process, and improving the effect of improving the viscous resistance encountered by the exhaust valve plate during the descending process.

[0025] Furthermore, the above arrangement can ensure that the lift limiter has sufficient strength.

[0026] In some embodiments, optionally, the groove is formed by bending the upwardly curved section.

[0027] In this embodiment, the groove is formed by bending the upwardly curved section, so that the lift limiter can be processed by punching or other processing methods, thereby reducing the processing difficulty of the lift limiter.

[0028] According to the second aspect of the utility model, the utility model proposes an exhaust assembly, including: a valve seat, the valve seat having an exhaust port; an exhaust valve plate, arranged on the valve seat, one end of the exhaust valve plate can move towards or away from the valve seat to open and close the exhaust port; a lift limiter as provided in the embodiment of the first aspect, the fixed section of the lift limiter is fixed on the valve seat, and the upward section is opposite to the exhaust valve plate.

[0029] The exhaust assembly proposed by the utility model includes a valve seat, an exhaust valve plate and a lift limiter as provided in the first aspect embodiment. The exhaust valve plate and the lift limiter are arranged on the valve seat. The valve seat has an exhaust port. One end of the exhaust valve plate can move towards or away from the valve seat. The other end of the exhaust valve is fixed on the valve seat, so that the exhaust valve plate can open and close the exhaust port. The fixed section of the lift limiter is fixed on the valve seat, and the upward section cooperates with the exhaust valve plate. When the exhaust valve plate rises, it is limited by the lift limiter.

[0030] The exhaust assembly proposed in the present invention includes the lift limiter provided in the first embodiment, and therefore has all the beneficial effects of the lift limiter provided in the first embodiment, which will not be described one by one here.

[0031] According to a third aspect of the present invention, the present invention provides a compressor, comprising: a lift limiter as provided in the embodiment of the first aspect; or an exhaust assembly as provided in the embodiment of the second aspect.

[0032] The compressor proposed in the present invention includes the lift limiter provided in the first embodiment; or the exhaust assembly provided in the second embodiment. Therefore, it has the lift limiter provided in the first embodiment; or the exhaust assembly provided in the second embodiment, which will not be listed one by one here.

[0033] Additional aspects and advantages of the present invention will become apparent in the following description or will be understood through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] 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:

[0035] Figure 1 A schematic structural diagram of a lift limiter provided by an embodiment of the present utility model is shown;

[0036] Figure 2 A schematic structural diagram of a lift limiter provided by an embodiment of the present utility model is shown;

[0037] Figure 3 A schematic structural diagram of a lift limiter provided by an embodiment of the present utility model is shown;

[0038] Figure 4 Shown as Figure 3 A cross-sectional view of the lift limiter is shown;

[0039] Figure 5 A schematic structural diagram of a lift limiter provided by an embodiment of the present utility model is shown;

[0040] Figure 6 A schematic structural diagram of a lift limiter provided by an embodiment of the present utility model is shown;

[0041] Figure 7 A schematic structural diagram of a lift limiter provided by an embodiment of the present utility model is shown;

[0042] Figure 8 A cross-sectional view of an exhaust assembly provided by one embodiment of the present utility model is shown;

[0043] Figure 9 A schematic structural diagram of a lift limiter and an exhaust valve plate in an exhaust assembly provided by one embodiment of the present utility model is shown;

[0044] Figure 10 A cross-sectional view of a valve seat in an exhaust assembly provided by one embodiment of the present utility model is shown;

[0045] Figure 11 A schematic diagram showing a partial structure of a compressor provided by an embodiment of the present utility model;

[0046] Figure 12 A cross-sectional view showing a partial structure of a compressor provided by one embodiment of the present utility model;

[0047] Figure 13The figure shows the comparative relationship between the energy efficiency and noise of the compressor provided by one embodiment of the present invention under different working conditions and basic parameters.

[0048] in, Figure 1 and Figure 13 The corresponding relationship between the reference numerals and component names is as follows:

[0049] 100 lift limiter, 110 fixed section, 112 mounting surface, 120 upward section, 122 first limit surface, 1222 sub-limit surface, 124 second limit surface, 130 groove, 132 longitudinal groove, 134 transverse groove, 200 exhaust assembly, 210 valve seat, 212 exhaust port, 214 mounting port, 220 exhaust valve plate, 230 connecting piece, 300 compressor, 310 bearing. DETAILED DESCRIPTION

[0050] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present invention and the features therein can be combined with each other without conflict.

[0051] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0052] Refer to the following Figures 1 to 13 A lift limiter 100 , an exhaust assembly 200 , and a compressor 300 according to some embodiments of the present invention will be described.

[0053] like Figure 1 As shown, according to the first aspect of the present invention, the present invention provides a lift limiter 100 , which is arranged on the valve seat 210 of the exhaust component 200 , and is used to limit the lift of the exhaust valve plate 220 of the exhaust component 200 .

[0054] Specifically, the lift limiter 100 includes a fixed section 110 and an upward section 120 connected to each other. The fixed end is used to fix the lift limiter 100, and the upward section 120 is used to limit the exhaust valve plate 220. The upward section 120 has a first limiting surface 122 and a second limiting surface 124. The first limiting surface 122 and the second limiting surface 124 are directed toward the exhaust valve plate 220 to limit the exhaust valve plate 220. The first limiting surface 122 is close to the fixed section 110 relative to the second limiting surface 124, and the second limiting surface 124 is away from the fixed section 110 relative to the first limiting surface 122. Along the direction BA from the fixed section 110 to the upward section 120, the first limiting surface 122 is a curved surface and the second limiting surface 124 is a flat surface.

[0055] The lift limiter 100 provided by the present invention comprises a fixed section 110 and an upward section 120 connected thereto. The fixed section 110 is used to fix the lift limiter 100. The upward section 120 is arranged on one side of the fixed section 110. The upward section 120 has a first limiting surface 122 and a second limiting surface 124 connected thereto. The first limiting surface 122 is close to the fixed section 110, and the second limiting surface 124 is away from the fixed section 110. Along the direction BA from the fixed section 110 to the upward section 120, the first limiting surface 122 is a curved surface. When the exhaust valve plate 220 is lifted, the first limiting surface 122 is naturally in a curved position. In the bent state, the first limiting surface 122 is set to a curved surface that is more in line with the curved shape of the exhaust valve plate 220 when it is lifted, which can effectively limit the lift of the exhaust valve plate 220, thereby reducing the noise generated by the exhaust valve plate 220 hitting the valve seat 210. In addition, the second limiting surface 124 is a plane, which can ensure that the exhaust valve plate 220 has sufficient lift under high-frequency working conditions, thereby ensuring the performance of the compressor 300. As mentioned above, by setting the limiting surfaces at both ends, the lift limiter 100 can meet both the noise reduction requirements of the compressor 300 and the performance requirements of the compressor 300.

[0056] That is, because the first limiting surface 122 is a curved surface, when the compressor 300 is operating at a low frequency, the movement frequency of the exhaust valve disc 220 is low, and the curved first limiting surface 122 can effectively limit the lift of the exhaust valve disc 220. However, when the compressor 300 is operating at a high frequency, the movement frequency of the exhaust valve disc 220 is high, and the second limiting surface 124 can provide lift space for the exhaust valve disc 220, thereby ensuring the performance of the compressor 300. Specifically, the first limiting surface 122 can be an arc surface. The first limiting surface 122 is convex toward the exhaust valve disc 220.

[0057] like Figure 1 As shown, in some embodiments, optionally, the fixing section 110 has a mounting surface 112 , the mounting surface 112 is connected to the first limiting surface 122 , and the first limiting surface 122 is a curved surface, and the mounting surface 112 and the first limiting surface 122 are tangent.

[0058] In this embodiment, the fixed section 110 has a mounting surface 112. When the lift limiter 100 is installed, the mounting surface 112 fits the valve seat 210 or the exhaust valve plate 220. The mounting surface 112 and the first limiting surface 122 are tangent to each other, so that the transition between the mounting surface 112 and the first limiting surface 122 is smoother and more in line with the curved shape of the exhaust valve plate 220 when it is raised, thereby ensuring the noise reduction effect.

[0059] like Figure 1 As shown, in some embodiments, optionally, the second limiting surface 124 and the first limiting surface 122 are tangent.

[0060] In this embodiment, the second limiting surface 124 is tangent to the first limiting surface 122, so that the transition between the first limiting surface 122 and the second limiting surface 124 is smoother, reducing the impact of the changes in the first limiting surface 122 and the second limiting surface 124 on the exhaust valve plate 220, ensuring that the exhaust valve plate 220 can rise smoothly, and helping to reduce the fatigue of the exhaust valve plate 220.

[0061] like Figure 2 As shown, in some embodiments, optionally, along the direction BA from the fixed section 110 to the upward-curving section 120 , the first limiting surface 122 includes at least two sub-limiting surfaces 1222 , and each sub-limiting surface 1222 is a curved surface.

[0062] In this embodiment, in the direction BA from the fixed section 110 to the upward section 120, the first limiting surface 122 includes at least two sub-limiting surfaces 1222, and all the sub-limiting surfaces 1222 are curved surfaces. Under different working conditions of the compressor 300, the degree of bending of the exhaust valve plate 220 when it is raised is different. Therefore, the first limiting surface 122 is set to at least two sub-limiting surfaces 1222 to adapt to the exhaust valve plate 220 under different working conditions, so that better noise reduction effect can be achieved under different working conditions.

[0063] Specifically, the number of the sub-limiting surfaces 1222 can be 2, 3, 4 or 5, etc.

[0064] like Figure 3 As shown, in some embodiments, optionally, the lift limiter 100 also includes a groove 130 provided at least on the upward section 120, the number of the groove 130 is at least one, and the groove 130 is located on the first limit surface 122, the groove 130 is located on the second limit surface 124, or the groove 130 is located on the first limit surface 122 and the second limit surface 124.

[0065] In this embodiment, the lift limiter 100 also includes at least one groove 130, which is arranged on the upward section 120 and is located at the first limit surface 122 and / or the second limit surface 124, thereby improving the gas resistance encountered by the exhaust valve plate 220 during the lifting process, and can also improve the viscous resistance encountered by the exhaust valve plate 220 during the descending process, thereby improving the performance of the compressor 300.

[0066] Specifically, another portion of the groove 130 may also be provided on the fixing section 110 .

[0067] like Figure 4 and Figure 5 As shown, in some embodiments, optionally, the groove 130 includes a longitudinal groove 132 , and the longitudinal groove 132 extends along the direction AB from the upward section 120 to the fixed section 110 .

[0068] In this embodiment, the groove 130 includes a longitudinal groove 132, which extends along the direction AB from the upward section 120 to the fixed section 110, that is, along the direction AB from the upward section 120 to the fixed section 110, the longitudinal groove 132 is opened on the first limiting surface 122 and the second limiting surface 124, thereby ensuring the effect of improving the operating ability of the exhaust valve plate 220.

[0069] like Figure 6 and Figure 7 As shown, in some embodiments, optionally, the groove 130 includes a transverse groove 134 , and the transverse groove 134 extends along a direction CD perpendicular to the upward-tilted segment 120 to the fixed segment 110 .

[0070] In this embodiment, the groove 130 includes a transverse groove 134, which extends along the direction CD perpendicular to the upward section 120 to the fixed section 110, that is, along the direction CD perpendicular to the upward section 120 to the fixed section 110, the transverse groove 134 is opened on the first limiting surface 122 and / or the second limiting surface 124, thereby ensuring the effect of improving the operating ability of the exhaust valve plate 220.

[0071] In some embodiments, optionally, the longitudinal groove 132 and the transverse groove 134 , the longitudinal groove 132 extends along the direction AB from the upward section 120 to the fixed section 110 , and the transverse groove 134 extends along the direction CD perpendicular to the upward section 120 to the fixed section 110 .

[0072] In this embodiment, the groove 130 includes a longitudinal groove 132 and a transverse groove 134. The longitudinal groove 132 extends along the direction AB from the upward section 120 to the fixed section 110, and the transverse groove 134 extends along the direction CD perpendicular to the upward section 120 to the fixed section 110, that is, thereby ensuring the effect of improving the operating ability of the exhaust valve plate 220.

[0073] like Figure 4 and Figure 5 As shown, in some embodiments, optionally, along the direction CD perpendicular to the fixed section 110 to the upturned section 120, the size of the longitudinal groove 132 is b1; b1 is greater than or equal to 2 mm, and the depth of the longitudinal groove 132 is h1, h1 is greater than or equal to 0.5 mm, and less than or equal to b1.

[0074] In this embodiment, along the direction CD perpendicular to the fixed section 110 to the upward-curving section 120, the size of the longitudinal groove 132 is b1, b1 is greater than or equal to 2 mm, and the depth of the longitudinal groove 132 is h1, h1 is greater than or equal to 0.5 mm and less than or equal to b1, thereby ensuring that the longitudinal groove 132 can accommodate sufficient gas to enhance the effect of improving the gas resistance encountered by the exhaust valve plate 220 during the rising process, and improving the effect of improving the viscous resistance encountered by the exhaust valve plate 220 during the descending process.

[0075] Furthermore, the above configuration can ensure that the lift limiter 100 has sufficient strength.

[0076] The value of b1 can be 2 mm, 2.5 mm or 3 mm, and the value of h1 can be 0.5 mm, 1 mm or 1.5 mm.

[0077] like Figure 6 and Figure 7 As shown, in some embodiments, optionally, along the direction BA from the fixed segment 110 to the upturned segment 120, the size of the transverse groove 134 is b2, b2 is greater than or equal to 2 mm; the depth of the transverse groove 134 is h2, h2 is greater than or equal to 0.5 mm, and less than or equal to b2.

[0078] In this embodiment, along the direction BA from the fixed section 110 to the upward-curved section 120, the size of the transverse groove 134 is b2, b2 is greater than or equal to 2 mm, and the depth of the transverse groove 134 is h2, h2 is greater than or equal to 0.5 mm and less than or equal to b2, thereby ensuring that the transverse groove 134 can accommodate sufficient gas to enhance the effect of improving the gas resistance encountered by the exhaust valve plate 220 during the rising process, and improving the effect of improving the viscous resistance encountered by the exhaust valve plate 220 during the descending process.

[0079] Furthermore, the above configuration can ensure that the lift limiter 100 has sufficient strength.

[0080] The value of b2 can be 2 mm, 2.5 mm or 3 mm, and the value of h2 can be 0.5 mm, 1 mm or 1.5 mm.

[0081] like Figure 4 、 Figure 5 、 Figure 6 and Figure 7 As shown, in some embodiments, optionally, the groove 130 is formed by bending the upwardly curved section 120 .

[0082] In this embodiment, the groove 130 is formed by bending the upwardly curved section 120 , so that the lift limiter 100 can be processed by a processing method such as stamping, thereby reducing the processing difficulty of the lift limiter 100 .

[0083] Specifically, after the upward section 120 is stamped, a protrusion is formed on the side away from the first limiting surface 122 and the second limiting surface 124 , and a groove 130 is formed on the first limiting surface 122 and the second limiting surface 124 .

[0084] The lift limiter 100 provided in the present application, the degree of lift of the upward section 120, the curvature of the first limit surface 122, the inclination of the second limit surface 124, etc., can be calculated according to the lift of the exhaust valve plate 220 under different working conditions. That is, according to the calculation of the lift of the exhaust valve plate 220 under different working conditions, the contours of the first limit surface 122 and the second limit surface 124 are designed, and the groove 130 is provided to improve the gas resistance encountered by the exhaust valve plate 220 when it rises and the viscous resistance encountered when it descends. While reducing the vibration noise of the compressor 300, the energy efficiency of each frequency working condition is taken into account, and it is easy to generate and manufacture.

[0085] like Figure 8 As shown, according to the second aspect of the present invention, the present invention provides an exhaust component 200, which is arranged on the bearing 310 of the compressor 300, and the exhaust component 200 includes a valve seat 210, an exhaust valve plate 220 and a lift limiter 100 as provided in the embodiment of the first aspect, the valve seat 210 has an exhaust port 212, the exhaust valve plate 220 is arranged on the valve seat 210, one end of the exhaust valve plate 220 can move close to or away from the valve seat 210 to open and close the exhaust port 212, the other end of the exhaust valve plate 220 is fixed on the valve seat 210, the fixed section 110 of the lift limiter 100 is fixed on the valve seat 210, and the upturned section 120 and the exhaust valve plate 220 are opposite.

[0086] The exhaust assembly 200 provided by the present invention includes a valve seat 210, an exhaust valve plate 220 and a lift limiter 100 as provided in the first aspect embodiment. The exhaust valve plate 220 and the lift limiter 100 are arranged on the valve seat 210. The valve seat 210 has an exhaust port 212. One end of the exhaust valve plate 220 can move toward or away from the valve seat 210. The other end of the exhaust valve is fixed on the valve seat 210, so that the exhaust valve plate 220 can open and close the exhaust port 212. The fixed section 110 of the lift limiter 100 is fixed on the valve seat 210, and the upward section 120 cooperates with the exhaust valve plate 220. When the exhaust valve plate 220 rises, it is limited by the lift limiter 100.

[0087] The exhaust assembly 200 provided by the present invention includes the lift limiter 100 provided in the first embodiment, and therefore has all the beneficial effects of the lift limiter 100 provided in the first embodiment, which will not be described one by one here.

[0088] Specifically, if Figure 9 As shown, the lift limiter 100 is arranged on the side of the exhaust valve plate 220 away from the exhaust port 212, and the upward section 120 of the lift limiter 100 is tilted in the direction away from the exhaust valve plate 220. The upward section 120 has a first limiting surface 122 and a second limiting surface 124 facing the valve plate, wherein the first limiting surface 122 close to the fixed section 110 has a curved cross-sectional profile, such as an arc shape, and the second limiting surface 124 away from the fixed section 110 has a straight cross-sectional profile.

[0089] Alternatively, as Figure 10 As shown, the valve seat 210 further has a mounting opening 214. A connector 230 passes through the lift limiter 100, the exhaust valve disc 220, and the mounting opening 214 to achieve fixation, thereby ensuring the installation accuracy of the lift limiter 100 to the exhaust valve disc 220. The connector 230 may be a rivet or a screw.

[0090] like Figure 11 and Figure 12 As shown, according to the third aspect of the present invention, the present invention proposes a compressor 300, comprising: the lift limiter 100 provided in the embodiment of the first aspect; or the exhaust assembly 200 provided in the embodiment of the second aspect.

[0091] The compressor 300 proposed in the present invention includes the lift limiter 100 provided in the first embodiment or the exhaust assembly 200 provided in the second embodiment. Therefore, the compressor 300 has the lift limiter 100 provided in the first embodiment or the exhaust assembly 200 provided in the second embodiment, which are not listed one by one here.

[0092] Specifically, the compressor 300 includes a bearing 310 , and the lift check device 100 or the exhaust assembly 200 is disposed on the bearing 310 . The lift check device 100 or the exhaust assembly 200 may be disposed on a main bearing or a secondary bearing.

[0093] like Figure 13 As shown, the percentage of energy efficiency and basic parameters of the compressor 300 provided in the present application is that, when the seer (seasonal energy efficiency ratio) is 30, the cooling capacity increases by nearly 50%, the input decreases by more than 50%, and the COP (Coefficient Of Performance) increases by more than 50%. When the seer is 60, the cooling capacity increases by less than 50%, the input decreases by less than 50%, and the COP increases by nearly 50%. The difference between the noise and basic parameters of the compressor 300 provided in the present application is that, when the seer is 30, the noise is reduced by nearly 50%, when the seer is 60, the noise increases by less than 0.5dB, or even less than 0.3dB. When the seer is 120, the noise increases by less than 0.5dB, or even less than 0.2dB.

[0094] The lift limiter 100, exhaust assembly 200 and compressor 300 provided by the present invention solve the problem of high noise caused by the exhaust of the compressor 300 to a certain extent, while also taking into account the high-frequency and low-frequency energy efficiency of the compressor 300.

[0095] In this utility model, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "plurality" refers to two or more, unless expressly limited otherwise. Terms such as "installed," "connected," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean fixed, removable, or integral; "connected" can mean directly or indirectly through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0096] In the description of the present invention, it is necessary to understand that the terms "up", "down", "left", "right", "front", "back", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or units referred to must have a specific direction, be constructed and operated in a specific direction, and therefore, cannot be understood as limiting the present invention.

[0097] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean 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.

[0098] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A lift limiter, characterized in that: include: Fixed segment; an upwardly curved section, disposed on one side of the fixed section, the upwardly curved section having a first limiting surface and a second limiting surface, the first limiting surface and the second limiting surface being connected, the first limiting surface being closer to the fixed section relative to the second limiting surface, and along a direction from the fixed section to the upwardly curved section, the first limiting surface is a curved surface, and the second limiting surface is a flat surface; The first limiting surface includes at least two sub-limiting surfaces, each of which is a curved surface; At least two of the sub-limiting surfaces are distributed along the direction from the fixed section to the upward-curving section.

2. The lift limiter according to claim 1, characterized in that: The fixing section has a mounting surface, and the mounting surface is tangent to the first limiting surface; The second limiting surface is tangent to the first limiting surface.

3. The lift limiter according to claim 1 or 2, characterized in that: Also includes: At least one groove is provided in the upwardly curved section, and the groove is located on the first limiting surface and / or the second limiting surface.

4. The lift limiter according to claim 3, characterized in that: The groove comprises: a longitudinal groove extending from the upwardly curved section to the fixed section; and / or A transverse groove extends along a direction perpendicular to the upward-curving section to the fixed section.

5. The lift limiter according to claim 4, characterized in that: Along the direction perpendicular to the fixed section to the upward section, the size of the longitudinal groove is b1, and b1 is greater than or equal to 2 mm; the depth of the longitudinal groove is h1, and h1 is greater than or equal to 0.5 mm and less than or equal to b1.

6. The lift limiter according to claim 4, characterized in that: Along the direction from the fixed section to the upward-curved section, the size of the transverse groove is b2, and b2 is greater than or equal to 2 mm; the depth of the transverse groove is h2, and h2 is greater than or equal to 0.5 mm and less than or equal to b2.

7. The lift limiter according to claim 4, characterized in that: The groove is formed by bending the upward section.

8. An exhaust assembly, characterized in that: include: a valve seat having an exhaust port; an exhaust valve plate, disposed on the valve seat, wherein one end of the exhaust valve plate can move toward or away from the valve seat to open and close the exhaust port; The lift limiter according to any one of claims 1 to 7, wherein the fixed section of the lift limiter is fixed to the valve seat, and the upturned section is opposite to the exhaust valve plate.

9. A compressor, characterized in that: include: The lift limiter according to any one of claims 1 to 7; or The exhaust assembly of claim 8.

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