Compressor and household appliance

Abstract

The invention discloses a compressor and a household appliance. The compressor comprises a valve plate, double valve plates, a lift limiter, a protective rubber layer, a crankcase, a piston assembly and a cylinder cover. The valve plate is provided with a mounting groove and an exhaust hole, and the exhaust hole is formed in the bottom surface of the mounting groove; the double-valve plate is arranged in the mounting groove and comprises an exhaust valve plate and an exhaust reed, the exhaust valve plate covers the exhaust hole, the exhaust reed comprises a connecting part and a bending part, the exhaust valve plate is connected with the connecting part and the bottom surface of the mounting groove, the connecting part is connected with the bending part, and the bending part is spaced from the exhaust valve plate; the lift limiter is arranged in the mounting groove and comprises a middle part and an edge part, the middle part is spaced from the bent part, and the edge part is connected with the bent part; the protective adhesive layer is arranged on one side, opposite to the exhaust reed, of the middle part and the edge part; a cylinder hole is formed in a mounting part of the crankcase and is communicated with the exhaust hole; the piston assembly extends into the air cylinder hole. The cylinder cover is connected with the crankcase through the valve plate. Generation of noise can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of compressors, and more specifically, to a compressor and a household appliance. Background Art

[0002] In the related art, the compressor includes an exhaust valve plate, which can frequently open and close the exhaust hole when the compressor is working to adjust the exhaust flow of the compressor. However, during the operation of the exhaust valve plate, it will collide with other related parts of the compressor (such as exhaust reed, lift limiter, valve seat, fasteners, etc.), thereby generating mechanical noise. Summary of the invention

[0003] The embodiments of the present application provide a compressor and a household appliance to solve or improve the technical problem of high noise caused by the double valve discs hitting the lift limiter.

[0004] A compressor according to an embodiment of the present application includes a valve plate, a double valve plate, a lift limiter, a protective rubber layer, a crankcase, a piston assembly and a cylinder head. Wherein, the valve plate is provided with a mounting groove and an exhaust hole, and the exhaust hole is provided on the bottom surface of the mounting groove; the double valve sheet is provided in the mounting groove, the double valve sheet comprises an exhaust valve sheet and an exhaust reed, the exhaust valve sheet covers the exhaust hole, the exhaust reed comprises a connecting portion and a bending portion, one end of the exhaust valve sheet is respectively connected to one end of the connecting portion and the bottom surface of the mounting groove, the other end of the connecting portion is connected to the bending portion, and the bending portion is spaced apart from the exhaust valve sheet in a direction away from the exhaust hole; the lift limiter is provided in the mounting groove, the lift limiter comprises a middle portion and an edge portion, the middle portion is spaced apart from the bending portion, and the edge portion is connected to the bending portion; a protective rubber layer, the protective rubber layer is provided on a side of the middle portion and the edge portion opposite to the exhaust reed; the crankcase comprises a mounting portion, the mounting portion is provided with a cylinder hole, and the cylinder hole is communicated with the exhaust hole; the piston assembly extends into the cylinder hole; the cylinder head is connected to the crankcase through the valve plate.

[0005] In this way, by setting an intermediate portion on the lift limiter and spacing the intermediate portion from the bent portion of the exhaust reed, when the exhaust reed is bent by the impact of the exhaust valve plate, the space between them can provide a certain degree of buffering, and by setting a protective rubber layer on the lift limiter, the protective rubber layer has high damping, thereby reducing the impact response of the exhaust reed hitting the lift limiter and reducing the generation of noise.

[0006] In some embodiments, the bent portion and the exhaust valve sheet are suspended to form a buffer space.

[0007] In this way, by suspending the bending portion and the exhaust valve plate to form a buffer space, it can provide a certain degree of buffering when the exhaust reed is bent by the exhaust valve plate. At the same time, there is no need to set a limiting block to fix the exhaust reed, which can reduce the complexity of the structure and save costs.

[0008] In some embodiments, the edge portion includes a first edge portion and a second edge portion, the middle portion connects the first edge portion and the second edge portion, and the maximum distance between the second edge portion and the first edge portion is smaller than the maximum distance between the bending portion and the connecting portion, so that the second edge portion abuts the bending portion.

[0009] In this way, by making the maximum distance between the bent portion and the connecting portion greater than the maximum distance between the second edge portion and the first edge portion, the second edge portion of the lift limiter can abut against the bent portion 222, and the bent portion of the exhaust reed can be compressed by the downward pressure of the second edge portion, thereby reducing the noise generated by the excessive displacement of the exhaust reed and the collision of the exhaust valve plate during the exhaust process of the compressor.

[0010] In some embodiments, the shape of the mounting groove is adapted to the shape of the lift limiter, and the lift limiter includes an elastic fixing member, which is connected to the second edge portion, and the elastic fixing member is configured to abut against the inner wall of the mounting groove so that the lift limiter and the mounting groove have an interference fit.

[0011] In this way, by adapting the shape of the mounting groove to the shape of the lift limiter, the lift limiter and the mounting groove are interference-fitted, which is convenient for installation and removal. In addition, an elastic fixing member is provided on the lift limiter, so that the elastic fixing member can fix the lift limiter in the mounting groove, which is convenient for installation and removal.

[0012] In certain embodiments, the mounting groove includes a supporting portion, and the supporting portion is used to support the dual valve plate and the lift limiter.

[0013] In this way, by providing the supporting portion, the double valve plate and the lift limiter can be supported in the mounting groove, which is beneficial for the exhaust valve plate to control the opening and closing of the exhaust hole.

[0014] In some embodiments, the support portion includes a first support portion, a second support portion and a third support portion, the exhaust hole is formed with a boss, the first support portion, the boss and the second support portion have the same height to support the double valve plate, and the third support portion is higher than the first support portion and the second support portion to support the lift limiter.

[0015] In this way, by making the first supporting portion, the boss and the second supporting portion have the same height, the exhaust valve sheet and the exhaust hole can be supported on the same plane, which is beneficial for the exhaust valve sheet to seal the exhaust hole and facilitates opening the exhaust hole.

[0016] In some embodiments, the mounting groove includes a limiting groove, the exhaust valve plate is provided with a first limiting portion, the exhaust reed is provided with a second limiting portion, and the first limiting portion and the second limiting portion are gap-matched with the limiting groove.

[0017] In this way, by matching the first limiting portion and the second limiting portion with the limiting groove gap, the exhaust valve plate and the exhaust reed plate can be fixed in the installation groove, and due to the existence of the gap, disassembly and installation are convenient.

[0018] In some embodiments, the exhaust valve plate is connected to the exhaust reed plate by welding or bolts.

[0019] In this way, by welding or bolting the exhaust valve plate and the exhaust reed plate, it is possible to save installation steps and reduce costs.

[0020] In some embodiments, the compressor includes a fixing member, a piston assembly and a motor assembly, the valve plate is provided with a mounting hole, and the valve plate is configured so that the fixing member passes through the mounting hole so that the valve plate is fixed between the cylinder head and the crankcase, the motor assembly is connected to the piston assembly, and the motor assembly is configured to drive the piston assembly to perform reciprocating motion in the cylinder hole.

[0021] In this way, by fixing the valve plate assembly between the cylinder head and the crankcase, and arranging the piston assembly and the motor assembly, the motor assembly drives the piston assembly to move, so that the intake and exhaust of the compressor can be controlled, which is beneficial to the normal operation of the compressor.

[0022] A household appliance according to an embodiment of the present application includes a compressor as described in any one of the above embodiments.

[0023] Additional aspects and advantages of the embodiments of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0025] Figure 1 is a partial structural schematic diagram of a compressor in certain embodiments of the present application;

[0026] Figure 2is a schematic structural diagram of a valve plate assembly according to certain embodiments of the present application;

[0027] Figure 3 is an exploded schematic diagram of a valve plate assembly according to certain embodiments of the present application;

[0028] Figure 4 is a cross-sectional schematic diagram of a valve plate assembly according to certain embodiments of the present application;

[0029] Figure 5 is a schematic diagram of the structure of a lift limiter in certain embodiments of the present application;

[0030] Figure 6 It is a schematic diagram of the structure of a double valve sheet in certain embodiments of the present application;

[0031] Figure 7 is a noise result diagram of a simulation test of a valve plate assembly according to some embodiments of the present application;

[0032] Figure 8 It is a noise result diagram of actual testing of the valve plate assembly of certain embodiments of the present application.

[0033] Description of reference numerals:

[0034] 1000, compressor; 100, valve plate assembly; 10, valve plate; 11, mounting groove; 111, support portion; 112, first support portion; 113, second support portion; 114, third support portion; 115, limit groove; 12, exhaust hole; 121, boss; 13, mounting hole; 20, double valve plate; 21, exhaust valve plate; 211, first limit portion; 22, exhaust reed; 221, connecting portion; 222 , bending portion; 223, buffer space; 224, second limit portion; 30, lift limiter; 31, middle portion; 32, edge portion; 321, first edge portion; 322, second edge portion; 34, protective rubber layer; 35, elastic fixing member; 200, crankcase; 210, mounting portion; 220, cylinder hole; 300, piston assembly; 400, motor assembly; 500, cylinder head; 600, connecting member. DETAILED DESCRIPTION

[0035] The embodiments of the present application are described in detail below, and 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 only used to explain the present application, and cannot be understood as limiting the present application.

[0036] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application 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 application. In the description of the present application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0037] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0038] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0039] The disclosure of this article provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described herein. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, and does not indicate the relationship between the various embodiments and / or settings discussed in itself. In addition, the present application provides various specific examples of processes and materials, but those of ordinary skill in the art can appreciate the application of other processes and / or the use of other materials.

[0040] See also Figures 1 to 4A compressor 1000 provided in an embodiment of the present application includes a valve plate 10, a double valve plate 20, a lift limiter 30, a protective rubber layer 34, a crankcase 200, a piston assembly 300 and a cylinder head 500. The valve plate 10 is provided with a mounting groove 11 and an exhaust hole 12, and the exhaust hole 12 is provided on the bottom surface of the mounting groove 11; the double valve plate 20 is provided in the mounting groove 11, and the double valve plate 20 includes an exhaust valve plate 21 and an exhaust reed 22, the exhaust valve plate 21 covers the exhaust hole 12, and the exhaust reed 22 includes a connecting portion 221 and a bending portion 222, one end of the exhaust valve plate 21 is respectively connected to one end of the connecting portion 221 and the bottom surface of the mounting groove 11, the other end of the connecting portion 221 is connected to the bending portion 222, and the bending portion 222 is connected to the exhaust valve plate 21 in a direction away from the exhaust hole 12. 1 interval; the lift limiter 30 is arranged in the mounting groove 11, and the lift limiter 30 includes a middle part 31 and an edge part 32, the middle part 31 is spaced from the bending part 222, and the edge part 32 is connected to the bending part 222; the protective rubber layer 34 is arranged on the side of the middle part 31 and the edge part 32 opposite to the exhaust reed 22; the crankcase 200 includes a mounting part 210, the mounting part 210 is provided with a cylinder hole 220, and the cylinder hole 220 is connected to the exhaust hole 12; the piston assembly 300 extends into the cylinder hole 220; the cylinder head 500 is connected to the crankcase 200 through the valve plate 10.

[0041] In this way, by setting the middle part 31 on the lift limiter 30, and the middle part 31 is spaced apart from the bent part 222 of the exhaust reed 22, when the exhaust reed 22 is hit and bent by the exhaust valve plate 21, the spaced buffer space 223 can play a certain degree of buffering, and by setting the protective rubber layer 34 on the lift limiter 30, the protective rubber layer 34 has high damping, thereby reducing the impact response of the exhaust reed 22 hitting the lift limiter 30 and reducing the generation of noise.

[0042] Among them, the compressor 1000 can be applied in household appliances (not marked in the accompanying drawings), and household appliances include but are not limited to refrigerators, air conditioners, and freezers. The household appliances of this application are described by taking a refrigerator as an example. The compressor 1000 is a core component in the refrigeration system of the refrigerator, and can convert low-temperature and low-pressure gas into high-temperature and high-pressure gas. For example, the compressor 1000 can inhale low-temperature and low-pressure refrigerant gas and convert it into high-temperature and high-pressure gas through mechanical compression. Thus, through the compression effect of the compressor 1000, the temperature and pressure of the refrigerant are improved. At the same time, the compressor 1000 can also control the temperature and pressure of the refrigeration system by adjusting its working state, thereby meeting different refrigeration needs.

[0043] The compressor 1000 can provide refrigeration power to the refrigeration system of the refrigerator. For example, in a refrigeration cycle, the compressor 1000 can push the refrigerant to circulate continuously in the refrigeration system, thereby achieving a continuous refrigeration effect. The compressor 1000 can be a reciprocating compressor 1000, which can compress the refrigerant gas into a high-pressure gas through the reciprocating motion of the piston, thereby achieving a refrigeration cycle.

[0044] The compressor 1000 includes a crankcase 200, a piston assembly 300, a motor assembly 400, a valve plate assembly 100 and a cylinder head 500. The crankcase 200 can form a closed space inside the compressor 1000, which can effectively prevent external impurities and moisture from entering the compressor 1000, thereby protecting the compressor 1000 from damage; at the same time, the sealing structure inside the crankcase 200 can also prevent the high-pressure refrigerant gas inside the compressor 1000 from leaking to the outside, ensuring the normal operation of the compressor 1000; and the crankcase 200 provides an installation position and support for the crankshaft. For example, during the operation of the compressor 1000, the crankshaft that can convert the reciprocating linear motion of the piston into a rotational motion is arranged in the crankcase 200, so that the crankcase 200 ensures the stable operation of the crankshaft. At the same time, the crankcase 200 also supports other key components such as connecting rods and cylinder liners, ensuring the stability and reliability of the entire compressor 1000 structure.

[0045] The piston assembly 300 can convert the pressure energy of the gas into mechanical energy, thereby driving the compressor 1000 to work. Among them, the piston assembly 300 includes a piston, a connecting rod and a crankshaft. The piston and the crankshaft can be connected through a connecting rod. One end of the connecting rod is connected to the crank pin on the crankshaft, and the other end is connected to the piston rod of the piston. When the crankshaft rotates, the crank pin will drive the connecting rod to reciprocate, and then push the piston to reciprocate in the cylinder hole 220. There are many ways to connect the piston rod and the piston. For example, a cylindrical boss connection or a conical surface connection, etc. The connection method between the piston rod and the piston needs to ensure a close fit and sufficient strength between the piston rod and the piston to withstand the gas pressure and the impact force during movement.

[0046] The motor assembly 400 can provide power for the compressor 1000 to perform compression. The motor assembly 400 includes a motor and a coupling, and the motor can be connected to the crankshaft through the coupling. For example, the motor includes a stator and a rotor, and the stator can be connected to the crankshaft through a coupling, and the coupling is a device for connecting two shafts, which can transmit torque and rotational motion, so that the motor can drive the crankshaft to move.

[0047] The cylinder head 500 can be connected to the crankcase 200, so that the valve plate assembly 100 can be fixed between the cylinder head 500 and the crankcase 200 and the crankcase 200 is closed, thereby constructing the compression space of the compressor 1000. In addition, the cylinder head 500 can provide necessary protection for the crankcase 200, preventing the high-temperature and high-pressure refrigerant gas generated by the crankcase 200 during the compression process from directly expanding outward, and also preventing external dust and moisture from entering the crankcase 200, thereby ensuring the normal operation of the compressor 1000.

[0048] Specifically, the compressor 1000 includes a valve plate assembly 100. The valve plate assembly 100 can control the entry and exit of refrigerant gas in the compressor 1000. For example, the valve plate assembly 100 can control the flow rate of low-temperature and low-pressure refrigerant entering the compressor 1000, and control the flow rate of high-temperature and high-pressure refrigerant compressed by the compressor 1000.

[0049] The valve plate assembly 100 includes a valve plate 10, a double valve plate 20 and a lift limiter 30. The valve plate 10 can control the flow of gas in and out of the compressor 1000. For example, during the suction phase of the compressor 1000, the valve plate 10 will remain open to allow gas to enter the compressor 1000; while during the compression phase, the valve plate 10 will be closed to prevent gas backflow or leakage, and the flow of gas can be controlled by controlling the opening and closing time.

[0050] The valve plate 10 is provided with a mounting groove 11 and an exhaust hole 12, and the exhaust hole 12 is provided at the bottom surface of the mounting groove 11, so that the mounting groove 11 can be used to install a double valve plate 20 for controlling the opening and closing of the exhaust hole 12. And the valve plate 10 is provided with a plurality of mounting holes 13, so that the connecting member 600 can be fixed by sequentially passing through the cylinder head 500, the valve plate assembly 100 and the crankcase 200.

[0051] The double valve plate 20 can be arranged in the mounting groove 11, and one end of the double valve plate 20 can be fixedly connected to the bottom surface of the mounting groove 11, so that the double valve plate 20 can be used to control the opening and closing of the exhaust hole 12. For example, when the compressor 1000 is in the exhaust stage, the gas in the compressor 1000 will push up the double valve plate 20 under the action of pressure, so that the exhaust hole 12 can be opened. The double valve plate 20 includes an exhaust valve plate 21 and an exhaust reed 22, and the exhaust valve plate 21 and the exhaust reed 22 are both made of elastic materials. Among them, the exhaust valve plate 21 can cover the exhaust hole 12, thereby sealing the exhaust hole 12, and preventing the compressor 1000 from leaking. The exhaust reed 22 can press against the exhaust valve plate 21 when exhausting, so as to limit the height of the exhaust valve plate 21 being pushed up to limit the exhaust flow rate.

[0052] The exhaust reed 22 includes a connecting portion 221 and a bending portion 222. One end of the exhaust valve plate 21 can be connected to one end of the connecting portion 221, and one end of the exhaust valve plate 21 can be connected to the bottom surface of the mounting groove 11, so that the exhaust reed 22 and the exhaust valve plate 21 are fixed in the mounting groove 11. The other end of the connecting portion 221 can be connected to the bending portion 222, and the bending portion 222 is spaced from the exhaust valve plate 21 in a direction away from the exhaust hole 12, that is, the bending portion 222 can be suspended from the exhaust valve plate 21 to form a buffer space 223. When exhausting, the exhaust valve plate 21 can be buffered by the buffer space 223 before contacting the exhaust reed 22, which reduces the slapping response of the exhaust valve plate 21 hitting the exhaust reed 22, which is conducive to reducing noise. Furthermore, the buffer space 223 can provide a certain degree of buffering when the exhaust reed 22 is hit and bent by the exhaust valve plate 21 . At the same time, there is no need to set a limiting block to fix the exhaust reed 22 , which can reduce the complexity of the structure and save costs.

[0053] The lift limiter 30 can be used to limit the movement of the dual valve plate 20. The lift limiter 30 is arranged in the mounting groove 11, and the lift limiter 30 includes a middle portion 31. When the lift limiter 30 is installed in the mounting groove 11, the middle portion 31 can be spaced from the bent portion 222, so that when the bent portion 222 is abutted by the exhaust valve plate 21, the bent portion 222 can pass through the buffer space 223 and then hit the bent portion 222 of the lift limiter 30, thereby reducing noise.

[0054] The lift limiter 30 includes a protective rubber layer 34, which is arranged on the middle portion 31 and the second edge portion 322. The protective rubber layer 34 can be made of a gel-like material with elasticity, for example, the protective rubber layer 34 can be made of rubber, plastic and other materials. By arranging the protective rubber layer 34 on the middle portion 31 and the second edge portion 322, when the compressor 1000 is exhausting, the bent portion 222 of the exhaust reed 22 can hit the protective rubber layer 34. Since the protective rubber layer 34 has high damping, it can absorb the hitting force generated by the exhaust reed 22, thereby reducing the noise generated by the exhaust reed 22 hitting the lift limiter 30. In this way, by arranging the protective rubber layer 34 on the middle portion 31 and the second edge portion 322, the noise generated by the exhaust valve plate 21 hitting the lift limiter 30 can be reduced.

[0055] See also Figure 4 , Figure 5 and Figure 6In a certain embodiment, the edge portion 32 includes a first edge portion 321 and a second edge portion 322, the middle portion 31 connects the first edge portion 321 and the second edge portion 322, and the maximum distance between the second edge portion 322 and the first edge portion 321 is less than the maximum distance between the bending portion 222 and the connecting portion 221, so that the second edge portion 322 abuts against the bending portion 222.

[0056] In this way, by making the maximum distance between the bending portion 222 and the connecting portion 221 greater than the maximum distance between the second edge portion 322 and the first edge portion 321, the second edge portion 322 of the lift limiter 30 can abut against the bending portion 222, and the bending portion 222 of the exhaust reed 22 can be compressed by the downward pressure of the second edge portion 322, thereby reducing the noise generated by the excessive displacement of the exhaust reed 22 and the collision of the exhaust valve plate 21 during the exhaust process of the compressor 1000.

[0057] Specifically, the lift limiter 30 further includes a first edge portion 321 and a second edge portion 322. The middle portion 31 of the lift limiter 30 can connect the first edge portion 321 and the second edge portion 322, and the first edge portion 321 can abut against one end of the connection portion 221 and the exhaust valve plate 21, so that the lift limiter 30 can fix the double valve plate 20. The second edge portion 322 can abut against one end of the bent portion 222 away from the connection portion 221, so that the slapping response of the exhaust reed 22 hitting the lift limiter 30 when it is abutted by the exhaust valve plate 10 can be reduced, so that the noise generated by the exhaust reed 22 hitting the lift limiter 30 can be reduced.

[0058] The bent portion 222 of the exhaust reed 22 needs to be set to a specific bending degree, so that after the lift limiter 30 is assembled into the mounting groove 11, the second edge portion 322 can abut against the end of the bent portion 222 away from the connecting portion 221, so as to reduce the noise generated by the exhaust reed 22 hitting the lift limiter 30. For example, before the valve plate assembly 100 is assembled, by setting the maximum distance h of the bent portion 222 from the connecting portion 221 to be greater than the maximum distance H of the second edge portion 322 from the first edge portion 321, it can be ensured that after the lift limiter 30 is assembled into the mounting groove 11, the second edge portion 322 can abut against the end of the bent portion 222 away from the connecting portion 221.

[0059] Please refer again Figure 3 In a certain embodiment, the shape of the mounting groove 11 is adapted to the shape of the lift limiter 30, and the lift limiter 30 includes an elastic fixing member 35, which is connected to the second edge portion 322, and the elastic fixing member 35 is configured to abut against the inner wall of the mounting groove 11 so that the lift limiter 30 and the mounting groove 11 have an interference fit.

[0060] In this way, the shape of the mounting groove 11 is adapted to the shape of the lift limiter 30, so that the lift limiter 30 and the mounting groove 11 are interference-fitted, which is convenient for installation and removal. In addition, an elastic fixing member 35 is provided on the lift limiter 30, so that the elastic fixing member 35 can fix the lift limiter 30 in the mounting groove 11, which is convenient for installation and removal.

[0061] Specifically, the lift limiter also includes an elastic fixing member 35. The elastic fixing member 35 can be made of an elastic material, so that the elastic fixing member 35 has a certain elastic force. Therefore, by setting the elastic fixing member 35 on the second edge portion 322 of the lift limiter 30, and when the lift limiter 30 needs to be installed, the elastic fixing member 35 can be compressed, so that the lift limiter 30 can extend into the installation groove 11. When the lift limiter 30 reaches the fixed position, the elastic fixing member 35 receives the interaction of the elastic force and can squeeze the inner wall of the installation groove 11, so that the lift limiter 30 can abut against the inner wall of the installation groove 11, and then the lift limiter 30 is fixed in the installation groove 11. When the lift limiter 30 needs to be disassembled, the elastic fixing member 35 is compressed so that the width of the lift limiter 30 is smaller than the width of the mounting groove 11, so that the lift limiter 30 can be easily removed from the mounting groove 11 without the need for additional disassembly tools, which can reduce the disassembly process and reduce costs.

[0062] The shape of the mounting groove 11 provided on the valve plate 10 needs to be set according to the shape of the lift limiter 30, so that the lift limiter 30 can be installed in the mounting groove 11. For example, before the mounting groove 11 is formed on the valve plate 10, the size and shape of the lift limiter 30 need to be measured. When the shape of the lift limiter 30 is cylindrical, the shape of the mounting groove 11 also needs to be set to a cylindrical shape; when the shape of the lift limiter 30 is a prismatic shape, the shape of the mounting groove 11 also needs to be set to a prismatic shape. In this way, the lift limiter 30 can be placed in the mounting groove 11.

[0063] By making the outer diameter of the lift limiter 30 slightly larger than the inner diameter of the mounting groove 11, the lift limiter 30 only needs to be pressed into the mounting groove 11 with a certain force during installation, thereby ensuring that the lift limiter 30 is firmly fixed in the mounting groove 11 after installation, and the installation is simple.

[0064] By providing a small interference between the outer surface of the lift limiter 30 and the inner surface of the mounting groove 11, the jamming phenomenon caused by the dimensional tolerance or assembly error of the lift limiter 30 during the assembly process can be avoided, so that the lift limiter 30 can be easily and accurately installed in the mounting groove 11. In addition, during the operation of the compressor 1000, the lift limiter 30 may undergo thermal expansion due to the increase in temperature, so the clearance fit between the mounting groove 11 and the lift limiter 30 can accommodate the occurrence of thermal expansion and prevent the lift limiter 30 from being damaged or failing due to excessive thermal stress. And the reasonable interference between the mounting groove 11 and the lift limiter 30 can reduce the friction and wear between the lift limiter 30 and the mounting groove 11, extend the service life of the lift limiter 30, and thus improve the reliability and stability of the compressor 1000. Finally, the clearance fit between the mounting groove 11 and the lift limiter 30 enables the lift limiter 30 to be more easily removed from the mounting groove 11 when maintenance or replacement is required, thereby reducing maintenance costs and time.

[0065] See also Figure 3 In a certain embodiment, the mounting groove 11 includes a supporting portion 111 , and the supporting portion 111 is used to support the dual valve plate 20 and the lift limiter 30 .

[0066] In this way, by providing the support portion 111 , the dual valve disc 20 and the lift limiter 30 can be supported in the mounting groove 11 , thereby facilitating the exhaust valve disc 21 to control the opening and closing of the exhaust hole 12 .

[0067] Specifically, a support portion 111 is provided on the mounting groove 11. The support portion 111 can be used to support the double valve disc 20 and the lift limiter 30. In a certain embodiment, the support portion 111 includes a first support portion 112, a second support portion 113 and a third support portion 114. The first support portion 112, the boss 121 and the second support portion 113 can be used to support the exhaust valve disc 21, and the third support portion 114 can be used to support the lift limiter 30. And since the exhaust hole 12 is formed with a boss 121, in order to prevent the exhaust valve disc 21 from being unable to seal the boss 121, the heights of the first support portion 112, the boss 121 and the second support portion 113 are the same, so that the first support portion 112, the boss 121 and the second support portion 113 are on the same plane to support the double valve disc 20.

[0068] It should be noted that the third support portion 114 is higher than the first support portion 112 and the second support portion 113, so that the third support portion 114 can be used to support the lift limiter 30. In this way, by making the first support portion 112, the boss 121 and the second support portion 113 have the same height, the exhaust valve plate 21 and the exhaust hole 12 can be supported on the same plane, which is beneficial for the exhaust valve plate 21 to seal the exhaust hole 12 and facilitates opening the exhaust hole 12.

[0069] Please participate Figure 3 In some embodiments, the mounting groove 11 includes a limiting groove 115, the exhaust valve plate 21 is provided with a first limiting portion 211, and the exhaust reed plate 22 is provided with a second limiting portion 224, and the first limiting portion 211 and the second limiting portion 224 are clearance-matched with the limiting groove 115.

[0070] In this way, by matching the first limiting portion 211 and the second limiting portion 224 with the limiting groove 115, the exhaust valve plate 21 and the exhaust reed plate 22 can be fixed in the installation groove 11, and the existence of the gap facilitates disassembly and installation.

[0071] Specifically, a limiting groove 115 is provided on one end of the installation groove 11 close to the connection portion 221, and the limiting groove 115 can be used to limit the exhaust valve plate 21 and the exhaust reed 22. By providing a first limiting portion 211 on one end of the exhaust valve plate 21 connected to the connection portion 221, and providing a second limiting portion 224 on one end of the exhaust reed 22 close to the connection portion 221, and the shapes of the first limiting portion 211 and the second limiting portion 224 can be adapted to the shape of the limiting groove 115, so that the first limiting portion 211 and the second limiting portion 224 can be gap-matched with the limiting groove 115, and then the exhaust valve plate 21 and the exhaust reed 22 can be fixed in the installation groove 11.

[0072] By reserving a certain gap between the limiting groove 115 and the first limiting portion 211, and between the limiting groove 115 and the second limiting portion 224, the jamming phenomenon caused by the dimensional tolerance or assembly error of the exhaust valve plate 21 and the exhaust reed plate 22 during the assembly process can be avoided, so that the double valve plate 20 can be easily and accurately installed in the installation groove 11. In addition, during the operation of the compressor 1000, the double valve plate 20 may undergo thermal expansion due to the increase in temperature, so the clearance fit between the installation groove 11 and the double valve plate 20 can accommodate the occurrence of thermal expansion, and prevent the double valve plate 20 from being damaged or failing due to excessive thermal stress.

[0073] See also Figure 7In some embodiments, by providing the middle portion 31 on the lift limiter 30, and the middle portion 31 is spaced from the bent portion 222 of the exhaust reed 22, and by providing the bent portion 222 on the exhaust reed 22, the second edge portion 322 of the lift limiter 30 can abut against the bent portion 222, so that the bent portion 222 of the exhaust reed 22 can be pressed by the downward pressure of the second edge portion 322. After simulation tests were conducted on the improved compressor 1000 and the compressor 1000 before the improvement, the valve plate assembly 100 before the improvement had obvious response peaks near frequencies such as 3200Hz, 4500Hz, and 5800Hz. With the improved valve plate assembly 100, the response of the valve plate assembly 100 near the frequency band of 3200Hz-6000Hz was significantly reduced, thereby reducing the slapping excitation of the exhaust valve plate 21, reducing the excitation source, and improving high-frequency noise.

[0074] See also Figure 8 After actual testing of the improved compressor 1000 and the compressor 1000 before and after improvement, it can be concluded that the average decibel of the valve plate assembly 100 before improvement between frequencies of 100 Hz and 6000 Hz is greater than the average decibel of the valve plate assembly 100 after improvement between frequencies of 100 Hz and 6000 Hz, so that the improved valve plate assembly 100 can reduce noise.

[0075] In the description of this specification, the descriptions with reference to the terms "certain embodiments", "in an example", "exemplarily", etc., mean that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0076] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are optional and cannot be understood as limitations to the present application. A person skilled in the art can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A compressor, characterized in that: include: A valve plate, wherein the valve plate is provided with a mounting groove and an exhaust hole, and the exhaust hole is provided on the bottom surface of the mounting groove; A double valve plate, the double valve plate is arranged in the mounting groove, the double valve plate comprises an exhaust valve plate and an exhaust reed, the exhaust valve plate covers the exhaust hole, the exhaust reed comprises a connecting portion and a bending portion, one end of the exhaust valve plate is respectively connected to one end of the connecting portion and the bottom surface of the mounting groove, the other end of the connecting portion is connected to the bending portion, and the bending portion is spaced from the exhaust valve plate in a direction away from the exhaust hole; A lift limiter, the lift limiter is arranged in the mounting groove, the lift limiter comprises a middle portion and an edge portion, the middle portion is spaced apart from the bending portion, and the edge portion is connected to the bending portion; A protective rubber layer, the protective rubber layer being arranged on a side of the middle portion and the edge portion opposite to the exhaust reed; A crankcase, the crankcase comprising a mounting portion, the mounting portion being provided with a cylinder hole, the cylinder hole being in communication with the exhaust hole; a piston assembly, the piston assembly extending into the cylinder bore; A cylinder head is connected to the crankcase through the valve plate.

2. The compressor according to claim 1, characterized in that The bent portion and the exhaust valve sheet are suspended to form a buffer space.

3. The compressor according to claim 1, characterized in that The edge portion includes a first edge portion and a second edge portion, the middle portion connects the first edge portion and the second edge portion, and the maximum distance between the second edge portion and the first edge portion is smaller than the maximum distance between the bending portion and the connecting portion, so that the second edge portion abuts the bending portion.

4. The compressor according to claim 3, characterized in that The shape of the mounting groove is adapted to the shape of the lift limiter, and the lift limiter includes an elastic fixing member, which is connected to the second edge portion, and the elastic fixing member is configured to abut against the inner wall of the mounting groove so that the lift limiter and the mounting groove have an interference fit.

5. The compressor according to claim 4, characterized in that The mounting groove includes a supporting portion, and the supporting portion is used to support the double valve plate and the lift limiter.

6. The compressor according to claim 5, characterized in that The support portion includes a first support portion, a second support portion and a third support portion, the exhaust hole is formed with a boss, the first support portion, the boss and the second support portion have the same height to support the double valve plate, and the third support portion is higher than the first support portion and the second support portion to support the lift limiter.

7. The compressor according to claim 1, characterized in that The mounting groove comprises a limiting groove, the exhaust valve plate is provided with a first limiting portion, the exhaust reed plate is provided with a second limiting portion, and the first limiting portion and the second limiting portion are clearance-matched with the limiting groove.

8. The compressor according to claim 1, characterized in that The exhaust valve sheet is connected to the exhaust reed sheet by welding or bolts.

9. The compressor according to claim 1, characterized in that The compressor includes a fixing part, a piston assembly and a motor assembly. The valve plate is provided with a mounting hole, and the valve plate is configured so that the fixing part passes through the mounting hole so that the valve plate is fixed between the cylinder head and the crankcase. The motor assembly is connected to the piston assembly, and the motor assembly is configured to drive the piston assembly to reciprocate in the cylinder hole.

10. A household appliance, characterized in that: A compressor comprising the compressor described in any one of claims 1-9.

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