Compressor exhaust assembly, compressor and refrigeration equipment

Abstract

The invention discloses a compressor exhaust assembly, a compressor and refrigeration equipment, and belongs to the technical field of compressors, the compressor exhaust assembly comprises a crankcase, an exhaust cover and a buffer structure, the crankcase is provided with an exhaust cavity, the exhaust cover is connected to the crankcase, and a cavity opening of the exhaust cavity is covered with the exhaust cover; exhaust airflow enters the exhaust cavity and then is exhausted from the exhaust hole; the buffer structure is additionally arranged in the exhaust cavity, the exhaust cavity is divided into at least two cavities through the buffer structure, and the adjacent cavities are communicated through the through holes of the buffer structure, so that exhaust airflow can enter different cavities through the through holes, and the pressure reduction and buffer effects on the exhaust airflow are achieved; therefore, vibration generated by pressure pulsation in the exhaust process to a pipeline in the compressor is reduced, the effective noise reduction effect is achieved, and the requirement for quiet operation of the compressor is met.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, and in particular to a compressor exhaust assembly, a compressor and a refrigeration device. Background Art

[0002] Due to the periodic suction and exhaust process of a reciprocating compressor, the pressure in the compressor pipeline is not stable, but fluctuates around an average value. This phenomenon is called pressure pulsation. Pressure pulsation is the main cause of vibration and noise in the compressor pipeline.

[0003] In related technologies, the crankcase of the compressor is usually provided with an exhaust muffler, which reduces the noise generated by the operation of the compressor by reducing the vibration of the internal pipeline. Due to the simple structural design of the exhaust muffler, the exhaust muffler itself will produce large vibrations under the action of the refrigerant airflow, which in turn induces the vibration of the internal pipeline of the compressor, resulting in the noise elimination effect being unable to meet the requirements of the quiet operation of the compressor. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a compressor exhaust assembly that can effectively reduce the vibration caused by exhaust pulsation on the compressor's internal piping, achieve excellent noise reduction effects, and meet the compressor's demand for quiet operation.

[0005] The present invention also provides a compressor and a refrigeration device comprising the compressor exhaust assembly.

[0006] According to an embodiment of the first aspect of the present invention, a compressor exhaust assembly includes: a crankcase, provided with an exhaust cavity, one end of the exhaust cavity is provided with a cavity opening; an exhaust cover, connected to the crankcase and covering the cavity opening, the exhaust cover is provided with an exhaust hole connected to the exhaust cavity; a buffer structure, provided in the exhaust cavity, the buffer structure is used to separate the exhaust cavity into at least two cavities, the buffer structure is provided with a plurality of through holes, and adjacent cavities are connected through the through holes.

[0007] The compressor exhaust assembly according to the embodiment of the present invention has at least the following beneficial effects:

[0008] By arranging an exhaust chamber in the crankcase and connecting an exhaust cover to the crankcase, the exhaust cover covers the cavity opening of the exhaust chamber, so that the exhaust airflow enters the exhaust chamber and is discharged from the exhaust hole; a buffer structure is added in the exhaust chamber, and the exhaust chamber is divided into at least two cavities by the buffer structure. Adjacent cavities are connected by multiple through holes of the buffer structure, so that the exhaust airflow can enter different cavities through the through holes, which has a pressure-reducing and buffering effect on the exhaust airflow, thereby reducing the vibration of the pressure pulsation in the exhaust process on the pipeline in the compressor, having an effective noise reduction effect, and meeting the compressor's requirements for quiet operation.

[0009] According to some embodiments of the present invention, the buffer structure includes a body, a fixing portion is provided at the end of the body, the fixing portion is fixedly connected to the cavity opening, the body extends from the cavity opening toward the exhaust cavity, and a plurality of through holes are distributed on the body.

[0010] According to some embodiments of the present invention, the body is constructed as a cylinder, the fixing portion is constructed as a flange structure connected to the end of the cylinder, and the periphery of the exhaust cover abuts against the upper end surface of the flange structure to fasten the buffer structure.

[0011] According to some embodiments of the present invention, the crankcase is provided with an annular groove, which is located on the end face of the cavity and is adapted to the flange structure and the exhaust cover, and the periphery of the exhaust cover and the flange structure are arranged in the annular groove from top to bottom.

[0012] According to some embodiments of the present invention, the upper end surface of the flange structure is provided with a convex rib, the convex rib is arranged along the circumference of the flange structure, and the height of the convex rib ranges from 0.15 mm to 0.3 mm.

[0013] According to some embodiments of the present invention, the cylinder is spaced apart from the inner wall of the exhaust cavity, the bottom end of the cylinder abuts against the bottom wall of the exhaust cavity, and the plurality of through holes are distributed on the peripheral wall of the cylinder.

[0014] According to some embodiments of the present invention, the cylinder and the flange structure are integrally stamped from a metal plate, and the thickness of the metal plate ranges from 0.2 mm to 0.5 mm.

[0015] According to some embodiments of the present invention, the exhaust assembly also includes a fastener, the exhaust cover is provided with a through hole, the bottom wall of the exhaust cavity is provided with a connecting hole, and the buffer structure is provided with an avoidance hole. The fastener passes through the through hole and the avoidance hole in sequence from top to bottom and is connected to the connecting hole to fix the exhaust cover and the buffer structure.

[0016] According to some embodiments of the present invention, a flow passage communicating with the exhaust chamber is provided in the crankcase, and a cross-sectional area of ​​the through hole is smaller than a minimum cross-sectional area of ​​the flow passage.

[0017] According to some embodiments of the present invention, the plurality of through holes are circular holes, polygonal holes, or a combination of one or more of the above.

[0018] A compressor according to an embodiment of the second aspect of the present invention includes the compressor exhaust assembly of the embodiment of the first aspect.

[0019] The compressor according to the embodiment of the present invention has at least the following beneficial effects:

[0020] The compressor adopts the above-mentioned compressor exhaust assembly, by adding a buffer structure in the exhaust chamber, and using the buffer structure to divide the exhaust chamber into at least two cavities. The adjacent cavities are connected through multiple through holes of the buffer structure, so that the exhaust airflow can enter different cavities through the through holes, and finally be discharged from the exhaust holes. The buffer structure has a pressure-reducing and buffering effect on the exhaust airflow, thereby reducing the vibration of the pressure pulsation in the exhaust process on the pipeline inside the compressor, achieving an effective noise reduction effect and effectively reducing the operating noise of the compressor.

[0021] A refrigeration device according to an embodiment of a third aspect of the present invention includes the compressor according to the embodiment of the second aspect.

[0022] The refrigeration equipment according to the embodiment of the present invention has at least the following beneficial effects:

[0023] Since the refrigeration equipment adopts the above-mentioned compressor, it can play a pressure-reducing and buffering role on the exhaust airflow during the compressor exhaust process, thereby reducing the vibration caused by the pressure pulsation during the exhaust process on the pipeline inside the compressor, playing an effective noise reduction effect, and thus reducing the operating noise of the refrigeration equipment.

[0024] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0026] Figure 1 is an exploded schematic diagram of an exhaust assembly according to an embodiment of the present invention;

[0027] Figure 2 is a schematic top view of an exhaust assembly according to an embodiment of the present invention;

[0028] Figure 3 for Figure 2 Schematic diagram of the cross section in the AA direction;

[0029] Figure 4 for Figure 2 Schematic cross-section in the middle BB direction;

[0030] Figure 5 A schematic three-dimensional diagram of a buffer structure according to an embodiment of the present invention;

[0031] Figure 6 A schematic top view of a buffer structure according to an embodiment of the present invention;

[0032] Figure 7 for Figure 6Schematic cross-section in the CC direction;

[0033] Figure 8 for Figure 7 Schematic diagram of the enlarged structure at point D in the middle.

[0034] Figure Number:

[0035] Crankcase 100; exhaust cylinder 110; exhaust chamber 111; chamber 1111; connecting hole 112; annular groove 113; flow passage 120;

[0036] Exhaust cover 200; exhaust hole 210; through hole 220;

[0037] Fastener 300;

[0038] Buffer structure 400; body 410; cylinder 411; through hole 4111; avoidance hole 4112; fixing portion 420; flange structure 421; rib 4211;

[0039] Exhaust assembly 1000. DETAILED DESCRIPTION

[0040] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0041] In the description of the present invention, it should be understood that descriptions involving orientation, such as the orientation or positional relationship indicated by up, down, etc., are based on the orientation or positional relationship 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 device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0042] In the description of the present invention, if there is a description of first and second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0043] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0044] Reciprocating compressors operate by using an electric motor to drive a crank-connecting rod mechanism to achieve reciprocating piston motion, continuously compressing the refrigerant within the cylinder chamber, thereby establishing a pressure differential across the entire refrigeration cycle. These compressors are the core components of the entire refrigeration system. With the increasing popularity of 290a refrigerant in households and the development of higher-speed compressors, the impact of exhaust pressure pulsation has increased, making it particularly susceptible to causing significant exhaust piping vibration and cabinet noise.

[0045] Currently, most approaches to controlling cabinet noise focus on transmission pathways. These include optimizing seat spring stiffness to reduce compressor movement swing, thereby reducing cabinet noise; using high-damping vibration-damping pads on the compressor to reduce noise transmission at the connection between the compressor and the cabinet floor; and adding buffer structures or weight-reducing hammers to the connection between the compressor exhaust and the cabinet piping to reduce piping vibration. However, these approaches primarily consider the impact of transmission pathways on cabinet noise, and some technical solutions overlook the noise generated by the compressor's operation itself.

[0046] The pressure pulsation change of the refrigerant is the root cause of pipeline vibration and noise. There are many exhaust silencers in the relevant technology to reduce pipeline vibration and thus reduce the noise generated by the operation of the compressor, but the effect of eliminating vibration and noise is not good. Due to the unreasonable structure of the exhaust silencer, the exhaust silencer itself will produce large vibrations under the action of the refrigerant airflow, which in turn induces vibration of the pipeline in the compressor, resulting in the effect of eliminating noise being difficult to meet the refrigeration equipment's requirement for quiet operation.

[0047] Based on this, an embodiment of the present invention proposes a compressor exhaust assembly 1000, which is suitable for a reciprocating compressor. During the compressor exhaust process, it can play a pressure-reducing and buffering role on the exhaust airflow, thereby reducing the vibration of the pressure pulsation during the exhaust process on the pipeline inside the compressor, and has a good noise reduction effect, thereby being able to reduce the operating noise of the refrigeration equipment.

[0048] Reference Figures 1 to 8 As shown, the exhaust assembly 1000 according to the embodiment of the present invention is described in detail below with reference to the accompanying drawings.

[0049] Reference Figure 1 and Figure 2 As shown, an exhaust assembly 1000 according to an embodiment of the present invention includes a crankcase 100, an exhaust cover 200, and a fastener 300. The crankcase 100 is provided with an exhaust cavity 111. The upper end of the exhaust cavity 111 has an open cavity. The exhaust cover 200 covers the cavity and is fixedly connected to the crankcase 100 by the fastener 300. The exhaust cover 200 is provided with an exhaust hole 210. The exhaust hole 210 is in communication with the exhaust cavity 111. After the exhaust gas enters the exhaust cavity 111, it is discharged through the exhaust hole 210.

[0050] Reference Figure 1 and Figure 3As shown, the crankcase 100 is provided with an exhaust cylinder block 110, which is located at the upper end of the crankcase 100. An exhaust chamber 111 is formed in the exhaust cylinder block 110. The exhaust chamber 111 is roughly cylindrical in shape, and the exhaust cover 200 matches the chamber opening, and the chamber opening can be sealed by the exhaust cover 200. The exhaust cylinder block 110 can be integrally cast with the crankcase 100, or it can adopt other assembly structures. It is understandable that the crankcase 100 is also provided with a compression cylinder block, and the inner wall of the exhaust chamber 111 is provided with a flow channel 120. The exhaust chamber 111 is connected to the cylinder head of the compression cylinder block (not shown in the drawings) through the flow channel 120. When the high-pressure refrigerant is discharged from the cylinder head, it enters the exhaust chamber 111 through the flow channel 120 and is then discharged through the exhaust hole 210.

[0051] Reference Figure 1 As shown, the exhaust assembly 1000 of the embodiment of the present invention further includes a buffer structure 400, which is disposed in the exhaust cavity 111. The buffer structure 400 can separate the exhaust cavity 111 into at least two cavities 1111, specifically two or more cavities 1111. The buffer structure 400 is provided with a plurality of through holes 4111, which are used to connect adjacent cavities 1111, that is, the cavities 1111 are connected to each other. In this way, during the exhaust process, the exhaust airflow can enter different cavities 1111 through the through holes 4111, and finally be discharged from the exhaust hole 210, which can reduce the flow rate of the exhaust airflow, play a pressure-reducing and buffering role on the exhaust airflow, and help reduce pressure pulsation. Since the compressor has an internal pipeline connected to the exhaust hole 210, after the exhaust airflow is depressurized and buffered by the buffer structure 400, the vibration caused by the pressure pulsation on the internal pipeline of the compressor can be reduced, thereby reducing the vibration noise, and reducing the noise from the source, achieving a noise reduction and silencing effect, and meeting the compressor's requirements for quiet operation.

[0052] It is understood that the buffer structure 400 can be a partition, a cover, or other structure. For example, the partition can be fixedly connected to the inner peripheral wall of the exhaust chamber 111, dividing the exhaust chamber 111 into two upper and lower chambers 1111. The partition is provided with a plurality of through holes 4111. The upper chamber 1111 and the lower chamber 1111 are connected through the through holes 4111. After passing through the flow channel 120, the exhaust airflow first enters the lower chamber 1111, then enters the upper chamber 1111 through the through holes 4111, and finally is discharged through the exhaust hole 210. This can provide a pressure-reducing and buffering effect on the exhaust airflow, thereby reducing vibration and noise. Of course, the number of partitions is not limited to one. Two or more partitions can be arranged at intervals along the height direction of the exhaust chamber 111 to divide the exhaust chamber 111 into multiple chambers 1111. Each partition is provided with a plurality of through holes 4111 to ensure that the chambers 1111 are connected. The specific form of the buffer structure 400 can be reasonably adjusted according to the shape of the exhaust cavity 111 so that the buffer structure 400 can be matched and installed in the exhaust cavity 111.

[0053] It should be noted that the buffer structure 400 can be fixedly connected to the exhaust cylinder body 110 by welding, clamping, etc., or the buffer structure 400 can be connected to the exhaust cover 200. For example, the buffer structure 400 is a cover body, and the cover body is connected to the bottom surface of the exhaust cover 200 for easy assembly.

[0054] Reference Figure 1 As shown, in some embodiments, the buffer structure 400 is a separate component. The buffer structure 400 includes a body 410. A fixing portion 420 is provided at the upper end of the body 410. The fixing portion 420 is fixedly connected to the cavity opening. The body 410 extends from the cavity opening into the exhaust cavity 111. A plurality of through-holes 4111 are distributed on the body 410. The fixing portion 420 can be a protruding structure on the edge of the body 410. For example, the protruding structure can be a convex edge. The convex edge is connected to the exhaust cylinder 110 or the exhaust cover 200 to fix the buffer structure 400. The height of the extended body 410 can be less than or equal to the depth of the exhaust cavity 111. The shape of the body 410 can be a hemisphere, a square, or other polygonal shape. It can be understood that, compared to a flat plate, the body 410 adopting such a shape can increase the surface area. The surface of the body 410 can be provided with more through-holes 4111, resulting in a more rational structure.

[0055] Specifically, refer to Figure 2 and Figure 3As shown, in the embodiment, the body 410 is constructed as a barrel 411, which is generally cylindrical in shape. A plurality of through holes 4111 are evenly distributed on the peripheral wall of the barrel 411 along the circumference of the barrel 411. The barrel 411 divides the exhaust chamber 111 into two cavities 1111, one of which is located between the body 410 and the inner wall of the exhaust chamber 111 and is connected to the flow passage 120; the other cavity 1111 is located on the inner side of the body 410 and is connected to the exhaust hole 210. The two cavities 1111 are connected via the through holes 4111. The structure of the barrel 411 is easy to implement. The exhaust chamber 111 can be divided into two chambers using a relatively low-cost structure, which is beneficial for decompressing and buffering the exhaust airflow, reducing pressure pulsation, and thus reducing noise and vibration of the compressor.

[0056] It is understandable that the main body 410 is not limited to one cylinder 411, and can be a structure in which two or more cylinders 411 are arranged in sequence, so that a cavity 1111 is formed between adjacent cylinders 411. During the exhaust process, the exhaust airflow passes through each cavity 1111 from the outside to the inside in sequence and is discharged through the exhaust hole 210, which has a better noise reduction effect.

[0057] In some embodiments, the outer diameter of the cylinder 411 matches the inner diameter of the exhaust chamber 111, so that the outer peripheral wall of the cylinder 411 can be close to the inner peripheral wall of the exhaust chamber 111, and multiple through holes 4111 are distributed at the bottom of the cylinder 411. In this way, the exhaust chamber 111 is separated by the cylinder 411 to form two upper and lower chambers 1111, and the assembly structure of the cylinder 411 is stable and reliable and not prone to loosening.

[0058] Reference Figure 2 、 Figure 4 and Figure 6 As shown, in some embodiments, the exhaust cover 200 is connected to the crankcase 100 through a fastener 300, wherein a through-hole 220 is provided on the exhaust cover 200, and a connecting hole 112 is provided on the bottom wall of the exhaust chamber 111. In the embodiment, the fastener 300 is specifically a screw, and the connecting hole 112 is specifically a screw hole. Since the screw needs to pass through the through-hole 220 and extend into the bottom of the exhaust chamber 111 to be connected with the screw hole, the bottom of the cylinder 411 is hollowed out to form an avoidance hole 4112. During assembly, the screw can pass through the through-hole 220 and the avoidance hole 4112 from top to bottom in sequence and be connected with the screw hole. The entire buffer structure 400 does not affect the installation of the exhaust cover 200. The assembly of the buffer structure 400 can be completed after the exhaust cover 200 is fixed.

[0059] Of course, the exhaust cover 200 is not limited to being connected to the crankcase 100 through the fastener 300. The exhaust cover 200 can also be assembled by welding or other fastening connection methods to ensure that the exhaust cover 200 will not loosen or leak when the compressor is running, thereby improving operational reliability.

[0060] Reference Figure 5 and Figure 6 As shown, the fixing portion 420 in the embodiment is constructed as a flange structure 421, which is specifically a flange formed by folding the circumference of the upper end of the cylinder 411 outward. The outer diameter of the flange structure 421 is larger than the inner diameter of the exhaust chamber 111. During assembly, the flange structure 421 is located between the exhaust cover 200 and the upper end face of the cavity mouth, and the outer circumference of the exhaust cover 200 abuts against the upper end face of the flange structure 421. After fixing the exhaust cover 200 with screws, the flange structure 421 can be pressed against the cavity mouth through the exhaust cover 200, thereby completing the assembly of the buffer structure 400, and the assembly is simple and quick.

[0061] Combine Figure 3 and Figure 4 It can be understood that after the buffer structure 400 is assembled in place, the upper end of the cylinder 411 is fixed by the flange structure 421, and the cylinder 411 is separated from the inner wall of the exhaust chamber 111 to form a certain gap. The bottom of the cylinder 411 abuts against the bottom wall of the exhaust chamber 111, so that the upper and lower ends of the cylinder 411 are fixed, making it difficult for the cylinder 411 to loosen and vibrate. A roughly annular cavity 1111 is formed between the cylinder 411 and the inner wall of the exhaust chamber 111, and a roughly cylindrical cavity 1111 is formed on the inner side of the cylinder 411. A plurality of through holes 4111 are evenly arranged on the surface of the cylinder 411. The above-mentioned cylinder 411 structure can slow down the speed of the exhaust airflow, reduce the pressure pulsation of the airflow, and effectively reduce vibration noise.

[0062] In some embodiments, a groove matching the cylinder 411 is provided on the bottom wall of the exhaust chamber 111, and the bottom end of the cylinder 411 can be inserted into the groove for positioning, so that the upper and lower ends of the cylinder 411 are reliably fixed, thereby improving the reliability of the assembly of the buffer structure 400.

[0063] Reference Figure 3 and Figure 4 As shown, the upper end surface of the exhaust cylinder body 110 is provided with an annular groove 113, which is located on the inner peripheral wall of the cavity. The size of the annular groove 113 is adapted to the size of the flange structure 421 and the exhaust cover 200. During assembly, the cylinder body 411 and the exhaust cover 200 are placed into the exhaust cylinder body 110 in sequence, and the periphery of the exhaust cover 200 and the flange structure 421 are arranged from top to bottom in the annular groove 113, and then fastened with screws. The annular groove 113 plays a positioning role for the exhaust cover 200 and the flange structure 421, thereby improving assembly efficiency and making the assembly structure of the buffer structure 400 more stable and reliable, and not prone to loosening.

[0064] It should be noted that the specific dimensions of the flange structure 421 and the exhaust cover 200 are set according to the dimensions of the annular groove 113 to ensure that the outer periphery of the exhaust cover 200 abuts against the flange structure 421 and that the flange structure 421 can be pressed tightly after the exhaust cover 200 is fixed.

[0065] Reference Figure 7 and Figure 8 As shown, in some embodiments, a rib 4211 is provided on the upper end surface of the flange structure 421, and the rib 4211 is arranged along the circumference of the flange structure 421. When the exhaust cover 200 presses the flange structure 421, the rib 4211 abuts against the circumference of the exhaust cover 200, thereby improving the sealing between the exhaust cover 200 and the flange structure 421, ensuring that the exhaust cover 200 can effectively seal the exhaust chamber 111, avoiding air leakage in the exhaust chamber 111, and improving the operating reliability of the compressor.

[0066] Reference Figure 8 As shown, it can be understood that the higher the extrusion force generated by the mutual abutment between the exhaust cover 200 and the flange structure 421, the higher the sealing performance. By adding a rib 4211 to the end face of the flange structure 421, the sealing performance between the exhaust cover 200 and the flange structure 421 can be improved. The height h of the rib 4211 is understood to be the height of the rib 4211 protruding from the end face of the flange structure 421, and the height h ranges from 0.15mm to 0.3mm. When the height h of the rib 4211 is too small, the extrusion force generated by the mutual abutment between the rib 4211 and the exhaust cover 200 is small, reducing the sealing performance. When the height h of the rib 4211 is too large, the degree of fit between the end face of the exhaust cover 200 and the end face of the flange structure 421 is reduced. In other words, the exhaust cover 200 and the flange structure 421 are tightly attached at the rib 4211 position, but not fully attached at other positions, affecting the sealing performance. Therefore, in the embodiment of the present invention, the height h of the rib 4211 is within the above range. When the height h of the rib 4211 is between 0.15 mm and 0.3 mm, the sealing effect of the exhaust cavity 111 can be ensured. In specific embodiments, the height h of the rib 4211 can be set to 0.15 mm, 0.2 mm, 0.3 mm, etc., and can be selected according to actual product requirements.

[0067] Reference Figure 5 and Figure 7 As shown, since the buffer structure 400 is installed in the exhaust chamber 111 and is subjected to the impact of higher-pressure airflow, in order to improve the strength of the buffer structure 400, the flange structure 421 and the cylinder 411 in this embodiment are integrally stamped and formed. Specifically, they are stamped from a metal plate with a thickness ranging from 0.2mm to 0.5mm. This ensures a uniform thickness distribution throughout the buffer structure 400, providing high structural strength and strong pressure resistance, ensuring the stability of the assembly of the buffer structure 400 and preventing deformation. It can be understood that the rib 4211 is integrally formed with the flange structure 421, and after the cylinder 411 is formed, a through hole 4111 is opened on the peripheral wall of the cylinder 411.

[0068] It should be noted that in some embodiments of the present invention, the through holes 4111 may be circular holes, triangular holes, square holes, prismatic holes or other polygonal holes, and all the through holes 4111 have the same shape, such as Figure 5 In the illustrated embodiment, all through holes 4111 are circular holes, and each through hole 4111 has the same cross-sectional area, which makes processing and manufacturing easy and achieves a pressure-reducing and buffering effect. Of course, the shape of the through holes 4111 is not limited to the above embodiment. In other embodiments, through holes 4111 of different shapes can be combined. That is, the multiple through holes 4111 can be a combination of two or more of circular holes, triangular holes, square holes, prismatic holes, or other polygonal holes. For example, a portion of the through holes 4111 is in the shape of a circular hole, and another portion of the through holes 4111 is in the shape of a square hole. By combining through holes 4111 of different shapes, the design is more flexible.

[0069] It can be understood that in some embodiments, the cross-sectional area of ​​the through hole 4111 is smaller than the minimum cross-sectional area of ​​the flow channel 120. The through hole 4111 and the flow channel 120, both of which have circular cross-sections, are used as examples for explanation. Since the cross-sectional area of ​​the circular hole will affect the airflow velocity, the larger the size of the circular hole, the higher the airflow velocity. When the cross-sectional area of ​​the circular hole is larger than the minimum cross-sectional area of ​​the flow channel 120, the airflow discharged from the flow channel 120 can pass through the through hole 4111 more smoothly. The circular hole has an unobvious pressure-reducing and buffering effect on the airflow, which is not conducive to vibration reduction and noise reduction.

[0070] Therefore, in the embodiment, the cross-sectional area of ​​the through hole 4111 needs to be set smaller than the minimum cross-sectional area of ​​the flow channel 120 to ensure that the buffer structure 400 plays an effective pressure-reducing and buffering role. The specific cross-sectional area of ​​the through hole 4111 needs to be selected according to the displacement, refrigerant, and speed of the actual compressor. In addition, considering that the cross-sectional dimensions of the flow channel 120 are not uniformly distributed, the minimum cross-sectional area of ​​the flow channel 120 is used in the embodiment for comparison with the cross-sectional area of ​​the through hole 4111. Figure 3 In the embodiment shown, it can be understood that the cross-sectional dimension of the end of the flow channel 120 close to the exhaust cavity 111 is smaller, so the cross-sectional area of ​​the end of the flow channel 120 communicating with the exhaust cavity 111 can be taken as the minimum cross-sectional area.

[0071] In an embodiment of the present invention, an exhaust chamber 111 is provided in the crankcase 100, and an exhaust cover 200 is connected to the crankcase 100, and the exhaust cover 200 covers the cavity opening of the exhaust chamber 111, so that the exhaust airflow enters the exhaust chamber 111 and is discharged from the exhaust hole 210; a buffer structure 400 is added in the exhaust chamber 111, and the exhaust chamber 111 is separated by the buffer structure 400 to form at least two cavities 1111, and the adjacent cavities 1111 are connected by multiple through holes 4111 of the buffer structure 400, so that the exhaust airflow can enter different cavities 1111 through the through holes 4111, which has a pressure reducing and buffering effect on the exhaust airflow, thereby reducing the vibration of the pressure pulsation in the exhaust process on the pipeline in the compressor, achieving an effective noise reduction effect, and meeting the compressor's requirements for quiet operation.

[0072] According to an embodiment of the present invention, a compressor is further provided, comprising the compressor exhaust assembly 1000 of the above embodiment. An exhaust cylinder block 110 is provided on the crankcase 100, an exhaust cavity 111 is formed in the exhaust cylinder block 110, an exhaust cover 200 and a buffer structure 400 are installed in the exhaust cylinder block 110, wherein the exhaust cover 200 closes the cavity opening of the exhaust cavity 111, and the buffer structure 400 is located in the exhaust cavity 111. The exhaust cavity 111 is divided into at least two cavities 1111 by the buffer structure 400, and the adjacent cavities 1111 are connected by a plurality of through holes 4111 of the buffer structure 400, so that the exhaust gas flow can enter different cavities 1111 through the through holes 4111 and finally be discharged from the exhaust hole 210. The buffer structure 400 plays a role in reducing the pressure and buffering the exhaust gas flow, thereby reducing the vibration of the pressure pulsation in the exhaust process on the pipeline in the compressor, achieving an effective noise reduction effect, and effectively reducing the operating noise of the compressor.

[0073] According to an embodiment of the present invention, a refrigeration device is further provided. The refrigeration device is specifically a refrigerator, a freezer, etc., which includes the compressor of the above embodiment.

[0074] Since the refrigeration equipment adopts the above-mentioned compressor, it can play a pressure-reducing and buffering role on the exhaust airflow during the compressor exhaust process, thereby reducing the vibration caused by the pressure pulsation during the exhaust process on the pipeline inside the compressor, playing an effective noise reduction effect, and thus reducing the operating noise of the refrigeration equipment.

[0075] Of course, the present invention is not limited to the above-mentioned embodiments. Those skilled in the art may make equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A compressor exhaust assembly, characterized in that: include: The crankcase is provided with an exhaust cavity, and one end of the exhaust cavity is provided with a cavity opening; An exhaust cover is connected to the crankcase and covers the cavity opening, and the exhaust cover is provided with an exhaust hole communicating with the exhaust cavity; A buffer structure is provided in the exhaust cavity, and is used to separate the exhaust cavity into at least two cavities. The buffer structure is provided with a plurality of through holes, and adjacent cavities are connected through the through holes.

2. The compressor exhaust assembly according to claim 1, wherein: The buffer structure includes a body, an end portion of the body is provided with a fixing portion, the fixing portion is fixedly connected to the cavity opening, the body extends from the cavity opening toward the exhaust cavity, and a plurality of through holes are distributed on the body.

3. The compressor exhaust assembly according to claim 2, wherein: The main body is configured as a cylinder, the fixing portion is configured as a flange structure connected to an end portion of the cylinder, and the periphery of the exhaust cover abuts against an upper end surface of the flange structure to fasten the buffer structure.

4. The compressor exhaust assembly according to claim 3, wherein: The crankcase is provided with an annular groove, which is located on the end surface of the cavity and is adapted to the flange structure and the exhaust cover. The periphery of the exhaust cover and the flange structure are arranged in sequence in the annular groove from top to bottom.

5. The compressor exhaust assembly according to claim 3, wherein: The upper end surface of the flange structure is provided with a convex rib, and the convex rib is arranged along the circumference of the flange structure. The height of the convex rib ranges from 0.15 mm to 0.3 mm.

6. The compressor exhaust assembly according to claim 3, wherein: The cylinder is spaced apart from the inner wall of the exhaust cavity, the bottom end of the cylinder abuts against the bottom wall of the exhaust cavity, and a plurality of through holes are distributed on the peripheral wall of the cylinder.

7. The compressor exhaust assembly according to claim 3, wherein: The cylinder and the flange structure are integrally stamped from a metal plate, and the thickness of the metal plate ranges from 0.2 mm to 0.5 mm.

8. The compressor exhaust assembly according to claim 3, wherein: The exhaust assembly also includes a fastener, the exhaust cover is provided with a through hole, the bottom wall of the exhaust cavity is provided with a connecting hole, and the buffer structure is provided with an avoidance hole. The fastener passes through the through hole and the avoidance hole in sequence from top to bottom and is connected to the connecting hole to fix the exhaust cover and the buffer structure.

9. The compressor exhaust assembly according to claim 1, wherein: A flow passage communicating with the exhaust chamber is provided in the crankcase, and the cross-sectional area of ​​the through hole is smaller than the minimum cross-sectional area of ​​the flow passage.

10. The compressor exhaust assembly according to claim 9, wherein: The plurality of through holes are a combination of one or more of circular holes and polygonal holes.

11. A compressor, characterized in that: A compressor exhaust assembly comprising the compressor exhaust assembly according to any one of claims 1 to 10.

12. A refrigeration device, characterized in that: Including the compressor according to claim 11.

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