Reciprocating compressor

Abstract

The invention relates to the technical field of compressors, and provides a reciprocating compressor which comprises an air cylinder body, a piston, a valve plate, an exhaust cavity and an exhaust valve plate, the air cylinder body is provided with a cavity, at least part of the piston is located in the cavity, the piston is movably matched with the cavity, the valve plate is arranged on the air cylinder body, and the exhaust cavity is located in the cavity. A compression cavity is defined by the piston, the inner wall of the cavity and the valve plate, an exhaust hole is formed in the valve plate, the exhaust valve plate is arranged on the valve plate and connected to the end, facing the piston, of the valve plate, and under the condition that the exhaust valve plate is in a first closed state, the exhaust valve plate blocks the exhaust hole; and under the condition that the exhaust valve plate is in the first open state, the compression cavity is communicated with the exhaust cavity of the reciprocating compressor through the exhaust valve plate and the exhaust hole. According to the reciprocating compressor, the problem that in the related technology, the clearance volume of the reciprocating compressor is large can be solved.

Description

Technical Field

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

[0002] The compressor is an important component of the refrigeration system. As people pursue high refrigeration efficiency, their requirements for compressor efficiency are gradually increasing. Carbon dioxide, as a natural refrigerant, is widely used for its safety and environmentally friendly performance. Due to the high pressure difference between the suction and exhaust ports of the carbon dioxide compressor, the compressors currently used in the refrigeration system are mainly reciprocating compressors. However, the clearance volume of the reciprocating compressors in the related technology is relatively large, resulting in low efficiency of the reciprocating compressors. Summary of the invention

[0003] The present invention provides a reciprocating compressor, which is used to solve the problem of large clearance volume of the reciprocating compressor in the related art.

[0004] The present invention provides a reciprocating compressor, comprising: a cylinder body, a piston, a valve plate, an exhaust chamber and an exhaust valve plate, wherein:

[0005] The cylinder body has a chamber, at least part of the piston is located in the chamber, and the piston is movably matched with the chamber, the valve plate is arranged on the cylinder body, the piston, the inner wall of the chamber and the valve plate form a compression chamber, the valve plate is provided with an exhaust hole, the exhaust valve sheet is arranged on the valve plate, and is connected to one end of the valve plate facing the piston;

[0006] When the exhaust valve plate is in a first closed state, the exhaust valve plate blocks the exhaust hole; when the exhaust valve plate is in a first open state, the compression chamber and the exhaust chamber of the reciprocating compressor are connected through the exhaust valve plate and the exhaust hole.

[0007] According to the reciprocating compressor provided by the present invention, the exhaust valve plate comprises a valve body and a spiral spring bar, the valve body is provided with a mounting hole, and the second end of the spiral spring bar is fixedly connected to the hole wall of the mounting hole;

[0008] In the first closed state, the spiral spring bar is located in the mounting hole and forms a sheet-like structure to block the mounting hole; in the first open state, the spiral spring bar protrudes from the mounting hole and forms a gas flow channel.

[0009] According to the reciprocating compressor provided by the present invention, the exhaust valve plate also includes a limit bar, which is provided on the valve body and located at one end of the valve body facing the piston. The limit bar cooperates with the spiral spring bar in limiting position in the direction from the exhaust chamber to the compression chamber, and in the first closed state, the spiral spring bar abuts against the limit bar.

[0010] According to the reciprocating compressor provided by the present invention, the number of the exhaust holes and the exhaust valve plates are both multiple, and the exhaust valve plates are arranged in a one-to-one correspondence with the exhaust holes, a line connecting the center of the valve body and the first end of the spiral spring bar forms an auxiliary line, the auxiliary lines of the multiple exhaust valve plates are not arranged in parallel, and the first end of the spiral spring bar of each exhaust valve plate is located within the same circumference.

[0011] According to the reciprocating compressor provided by the present invention, the edge of the exhaust valve sheet is connected to the valve plate, and the portion of the exhaust valve sheet having the gas flow channel is opposite to the exhaust hole.

[0012] According to the reciprocating compressor provided by the present invention, part of the exhaust valve plate is arranged in the exhaust hole, and the side wall of the part of the exhaust valve plate arranged in the exhaust hole is connected to the hole wall of the exhaust hole.

[0013] According to the reciprocating compressor provided by the present invention, a first groove is provided on the side of the valve plate facing the piston, the first port of the exhaust hole is opened on the bottom wall of the first groove, the bottom wall of the first groove includes a limiting mounting surface arranged around the first port, and the exhaust valve plate is fixedly arranged in the first groove and fixedly connected to the limiting mounting surface.

[0014] According to the reciprocating compressor provided by the present invention, the valve plate is provided with an air suction hole, and the reciprocating compressor further comprises an air suction valve plate, the air suction valve plate is provided on the valve plate and is located on a side of the valve plate facing the piston;

[0015] When the intake valve plate is in the second closed state, the intake valve plate blocks the intake hole. When the intake valve plate is in the second open state, the compression chamber and the intake chamber of the reciprocating compressor are connected through the intake hole.

[0016] According to the reciprocating compressor provided by the present invention, the intake valve plate is an elastic component, and the intake valve plate includes a connecting portion and a blocking portion, the connecting portion is fixedly connected to the valve plate, the blocking portion is opposite to the intake hole, and in the second closed state, the blocking portion is in contact with the valve plate to block the intake hole.

[0017] According to the reciprocating compressor provided by the present invention, the reciprocating compressor also includes a cylinder head, the cylinder head is connected to the valve plate, the cylinder body and the cylinder head are respectively located on two opposite sides of the valve plate, the cylinder head and the valve plate form an air cavity, the cylinder head is provided with a partition, and the partition divides the air cavity into the exhaust cavity and the intake cavity.

[0018] In the embodiment of the present application, the exhaust valve sheet is arranged at the end of the valve plate facing the piston, and the exhaust hole on the valve plate is not part of the compression chamber, the exhaust hole is located outside the compression chamber, and the exhaust hole does not constitute part of the clearance volume, so the clearance volume of the reciprocating compressor can be reduced. It can be seen that the present application can solve the problem of large clearance volume of the reciprocating compressor in the related art. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 It is a structural schematic diagram of a reciprocating compressor provided by the present invention;

[0021] Figure 2 It is a position relationship diagram of the piston and the valve plate after the exhaust process and the intake process are completed provided by the present invention;

[0022] Figure 3 It is a schematic structural diagram of an end of the valve plate facing away from the piston provided by the present invention;

[0023] Figure 4 It is a schematic structural diagram of one end of the valve plate facing the piston provided by the present invention;

[0024] Figure 5 is a schematic diagram of the structure of the exhaust valve plate provided by the present invention (the exhaust valve plate is in a first open state);

[0025] Figure 6 It is a schematic diagram of the structure of the exhaust valve sheet in a first closed state provided by the present invention;

[0026] Figure 7 It is a diagram showing the angle relationship between the auxiliary lines of the plurality of exhaust valve sheets provided by the present invention.

[0027] Reference numerals:

[0028] 110, cylinder block; 111, chamber; 120, cylinder head;

[0029] 200, piston;

[0030] 300, valve plate; 310, exhaust hole; 320, air intake hole; 330, partition;

[0031] 410, exhaust cavity; 420, suction cavity;

[0032] 510, exhaust valve plate; 511, valve body; 512, spiral spring bar; 5121, first end; 5122, second end; 513, gas flow channel; 520, intake valve plate; 521, connecting part; 522, blocking part;

[0033] 600, crank;

[0034] 700, connecting rod;

[0035] 800. Auxiliary lines. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Please refer to Figures 1 to 7 The present invention discloses a reciprocating compressor, which includes a cylinder block 110, a piston 200, a valve plate 300, an exhaust chamber 410 and an exhaust valve plate 510.

[0038] Among them, the cylinder body 110 has a chamber 111, at least part of the piston 200 is located in the chamber 111, and the piston 200 and the chamber 111 are movably matched, that is, the piston 200 can move back and forth in the chamber 111, and the valve plate 300 is arranged on the cylinder body 110. Optionally, the valve plate 300 can be fixed to the cylinder body 110 by screw connection or welding. The piston 200, the inner wall of the chamber 111 and the valve plate 300 form a compression chamber. The valve plate 300 is provided with an exhaust hole 310, and the exhaust hole 310 is opposite to the chamber 111. The exhaust valve plate 510 is arranged on the valve plate 300, at least part of the exhaust valve plate 510 is opposite to the exhaust hole 310, and the exhaust valve plate 510 is connected to the end of the valve plate 300 facing the piston 200.

[0039] The exhaust valve plate 510 includes a first closed state and a first open state. When the exhaust valve plate 510 is in the first closed state, the exhaust valve plate 510 blocks the exhaust hole 310, so that the compression chamber is not connected to the exhaust chamber 410 of the reciprocating compressor; when the exhaust valve plate 510 is in the first open state, the compression chamber and the exhaust chamber 410 of the reciprocating compressor are connected through the exhaust valve plate 510 and the exhaust hole 310.

[0040] In the related art, the exhaust valve plate is usually arranged at the end of the valve plate away from the piston. In this way, the exhaust hole on the valve plate is also part of the compression chamber, and the gap between the piston and the exhaust valve plate through which gas can flow (which can also be understood as the exhaust hole) also constitutes a part of the clearance volume, which makes the clearance volume of the reciprocating compressor larger.

[0041] In the embodiment of the present application, the exhaust valve sheet 510 is arranged at the end of the valve plate 300 facing the piston 200, and the exhaust hole 310 on the valve plate 300 is not part of the compression chamber, and the exhaust hole 310 is located outside the compression chamber. The exhaust hole 310 does not constitute a part of the clearance volume, so the clearance volume of the reciprocating compressor can be reduced. It can be seen that the present application can solve the problem of large clearance volume of the reciprocating compressor in the related art.

[0042] In order to realize the movement of the piston 200, the reciprocating compressor may also include a crank 600 and a connecting rod 700. The crank 600 is connected to the connecting rod 700, and the connecting rod 700 is connected to the piston 200. The rotation of the crank 600 drives the connecting rod 700 to move, and the movement of the connecting rod 700 drives the piston 200 to move, so that the piston 200 can reciprocate under the drive of the crank 600 and the connecting rod 700.

[0043] There are many structures of the exhaust valve plate 510. In an optional embodiment, the exhaust valve plate 510 may include a valve body 511 and a spiral spring bar 512. The valve body 511 may be provided with a mounting hole, and the second end 5122 of the spiral spring bar 512 may be fixedly connected to the hole wall of the mounting hole. The valve body 511 and the spiral spring bar 512 may both be elastic components, and the valve body 511 and the spiral spring bar 512 may be a split structure, that is, the valve body 511 and the spiral spring bar 512 may be connected together by welding or the like, or the valve body 511 and the spiral spring bar 512 may be an integrated structure.

[0044] In the first closed state, the spiral spring bar 512 can be located in the mounting hole and form a sheet-like structure, thereby blocking the mounting hole so that the gas cannot pass through the exhaust valve plate 510; in the first open state, the spiral spring bar 512 can protrude axially from the mounting hole so that a gas flow channel 513 is formed between different sections of the spiral spring bar.

[0045] When the piston 200 moves toward the valve plate 300, the gas in the compression chamber is compressed, so that the pressure in the compression chamber is greater than the pressure in the exhaust chamber 410. Under the action of the pressure difference between the compression chamber and the exhaust chamber 410, the spiral spring bar 512 protrudes from the valve body 511 in the direction away from the piston 200, so that different sections of the spiral spring bar 512 are staggered to form a gas flow channel 513, so that the exhaust valve plate 510 is in a first open state, and the gas in the compression chamber is discharged into the exhaust chamber 410 through the gas flow channel 513 and the exhaust hole 310.

[0046] Since the spiral spring bar 512 is an elastic component, after the pressure difference between the compression chamber and the exhaust chamber 410 decreases or disappears, the spiral spring bar 512 returns to its initial state, that is, the adjacent different sections of the spiral spring bar 512 contact each other, so that the spiral spring bar 512 forms a sheet structure without a gas flow channel 513, so that the exhaust valve plate 510 is in a first closed state.

[0047] Optionally, the number of spiral spring bars 512 can be multiple, for example, two, the first ends 5121 of the two spiral spring bars 512 can be fixedly connected, the second ends 5122 of the two spiral spring bars 512 can be connected to the hole wall of the mounting hole, the two spiral spring bars 512 can be intertwined, and in the first open state, adjacent sections of the two spiral spring bars 512 can be staggered to form a gas flow channel 513, and in the first closed state, adjacent sections of the two spiral spring bars 512 can contact each other to make the gas flow channel 513 disappear.

[0048] We know that the reciprocating compressor also includes an air intake process. During the air intake process, the pressure in the compression chamber is relatively low, which may also cause a pressure difference between the compression chamber and the exhaust chamber 410, thereby possibly causing the spiral spring bar 512 to protrude toward the direction close to the piston 200, causing the exhaust valve plate 510 to form a gas flow channel 513, thereby causing the compression chamber and the exhaust chamber 410 to be connected.

[0049] In order to prevent the exhaust valve plate 510 from opening during the suction process of the reciprocating compressor, in an optional embodiment, the exhaust valve plate 510 may also include a limit bar, which may be provided on the valve body 511 and located at the end of the valve body 511 facing the piston 200. The limit bar may cooperate with the spiral spring bar 512 in the direction from the exhaust chamber 410 to the compression chamber, and in the first closed state, the spiral spring bar 512 abuts against the limit bar. In this case, the limit bar can prevent the spiral spring bar 512 from protruding from the valve body 511 in the direction close to the piston 200, thereby preventing the exhaust valve plate 510 from opening during the suction process of the reciprocating compressor.

[0050] In a further technical solution, a second groove may be provided at one end of the valve body 511 facing the piston 200 , and the end of the limit strip may be arranged in the second groove, so that the end surface of the limit strip facing the piston 200 is flush with the end surface of the valve body 511 facing the piston 200 .

[0051] In the embodiment of the present application, the number of the exhaust hole 310 and the exhaust valve plate 510 can be one, the number of the exhaust hole 310 and the exhaust valve plate 510 can also be multiple, and the exhaust valve plate 510 is set one by one with the exhaust hole 310, the line connecting the center of the valve body 511 and the first end 5121 of the spiral spring bar 512 can form an auxiliary line 800, the first end 5121 of the spiral spring bar 512 is the end of the spiral spring bar 512 close to the center of the valve body 511, and the auxiliary lines 800 of multiple exhaust valve plates 510 can be arranged non-parallel, that is, the auxiliary lines 800 of each exhaust valve plate 510 can have an angle a between them, and the angle a is not equal to 0°, and the first end 5121 of the spiral spring bar 512 of each exhaust valve plate 510 can be located in the same circumference. This structure can make the exhaust pressure of the reciprocating compressor more stable.

[0052] It should be noted that, when the exhaust valve plate 510 has multiple, for example two, spiral spring bars 512, the first end 5121 of one of the spiral spring bars 512 of each exhaust valve plate 510 can be located within a circle, and the first end 5121 of another spiral spring bar 512 of each exhaust valve plate 510 is located within another circle.

[0053] In the above solution, the exhaust valve plate 510 is disposed on the valve plate 300 . There are many ways to dispose the exhaust valve plate 510 on the valve plate 300 .

[0054] In an optional embodiment, the edge of the exhaust valve plate 510 can be connected to the valve plate 300 by means of a structure such as screws, and the portion of the exhaust valve plate 510 having the gas flow channel 513 (that is, the spiral spring bar 512) can be opposite to the exhaust hole 310, so that when the exhaust valve plate 510 is opened, the gas can be discharged into the exhaust cavity 410 through the gas flow channel 513 of the exhaust valve plate 510 and the exhaust hole 310. This connection method is relatively simple. Specifically, the valve body 511 of the exhaust valve plate 510 can be fixedly connected to the valve plate 300 by means of screws.

[0055] In an optional embodiment, a part of the exhaust valve plate 510 can be arranged in the exhaust hole 310, and a part of the exhaust valve plate 510 can be located on the side of the valve plate 300 facing the piston 200, and the side wall of the exhaust valve plate 510 arranged in the exhaust hole 310 can be connected to the hole wall of the exhaust hole 310 by screw connection or bonding. This structure makes the part of the exhaust valve plate 510 located in the valve plate 300, which can reduce the volume of the reciprocating compressor. Specifically, the side wall of the valve body 511 of the exhaust valve plate 510 can be fixedly connected to the hole wall of the exhaust hole 310 by screw connection, or by bonding, or by interference fit.

[0056] In an optional embodiment, a first groove may be provided on the side of the valve plate 300 facing the piston 200, a first port of the exhaust hole 310 may be opened on the bottom wall of the first groove, the bottom wall of the first groove may further include a position limiting mounting surface arranged around the first port, the exhaust valve plate 510 may be fixedly arranged in the first groove, and fixedly connected to the position limiting mounting surface, further, the end surface of the exhaust valve plate 510 facing the piston 200 may be flush with the end surface of the valve plate 300 facing the piston 200. In this case, it is possible to make the operation of installing the exhaust valve plate 510 on the valve plate 300 relatively simple, and the exhaust valve plate 510 may be located inside the valve plate 300, thereby reducing the volume of the reciprocating compressor.

[0057] Specifically, the valve body 511 of the exhaust valve plate 510 can be fixedly connected to the limiting mounting surface by screws, so that the exhaust valve plate 510 is fixed in the first groove.

[0058] In order to realize the suction process of the reciprocating compressor, the valve plate 300 can also be provided with a suction hole 320. The reciprocating compressor can also include an suction valve plate 520. The suction valve plate 520 can be provided on the valve plate 300 and is located on the side of the valve plate 300 facing the piston 200. At least a part of the suction valve plate 520 can be opposite to the suction hole 320. The suction valve plate 520 includes a second open state and a second closed state. When the suction valve plate 520 is in the second closed state, the suction valve plate 520 blocks the suction hole 320. When the suction valve plate 520 is in the second open state, the compression chamber and the suction chamber 420 are connected through the suction hole 320.

[0059] The intake valve plate 520 is arranged on the side of the valve plate 300 facing the piston 200, so that the intake hole 320 on the valve plate 300 is not part of the compression chamber. The intake hole 320 is located outside the compression chamber, so that the intake hole 320 does not constitute a part of the clearance volume, thereby also being able to reduce the clearance volume of the reciprocating compressor.

[0060] Specifically, the intake valve plate 520 can be an elastic component, and the intake valve plate 520 can include a connecting portion 521 and a blocking portion 522. The connecting portion 521 can be fixedly connected to the valve plate 300 by screws, and the blocking portion 522 can be opposite to the intake hole 320. In the second closed state, the blocking portion 522 is in contact with the valve plate 300 to block the intake hole 320.

[0061] During the process of the piston 200 moving away from the valve plate 300, the pressure in the compression chamber decreases, so that the pressure in the compression chamber is lower than the pressure in the suction chamber 420. The blocking portion 522 moves away from the valve plate 300 under the action of the pressure difference, and a gap is generated between the blocking portion 522 and the valve plate 300, so that the suction hole 320 is exposed in the compression chamber, so that the gas in the suction chamber 420 can enter the compression chamber.

[0062] After the air intake process is completed, the pressure difference between the compression chamber and the air intake chamber 420 decreases or disappears, and the blocking portion 522 returns to its initial state under the action of its own elasticity, that is, returns to the state of being attached to the valve plate 300.

[0063] In the above scheme, the reciprocating compressor has an exhaust chamber 410 and an intake chamber 420. For this purpose, the reciprocating compressor may further include a cylinder head 120. The cylinder head 120 may be connected to the valve plate 300 by screw connection or welding. The cylinder body 110 and the cylinder head 120 may be respectively located on opposite sides of the valve plate 300. The cylinder head 120 and the valve plate 300 may enclose an air cavity. The cylinder head 120 may be provided with a partition 330. The partition 330 may separate the air cavity into an exhaust chamber 410 and an intake chamber 420.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A reciprocating compressor, characterized in that: include: A cylinder body (110), a piston (200), a valve plate (300), an exhaust chamber (410) and an exhaust valve plate (510), wherein: The cylinder body (110) has a chamber (111), at least a portion of the piston (200) is located in the chamber (111), and the piston (200) and the chamber (111) are movably matched, the valve plate (300) is provided on the cylinder body (110), the piston (200), the inner wall of the chamber (111) and the valve plate (300) form a compression chamber, the valve plate (300) is provided with an exhaust hole (310), and the exhaust valve plate (510) is provided on the valve plate (300) and connected to one end of the valve plate (300) facing the piston (200); When the exhaust valve plate (510) is in a first closed state, the exhaust valve plate (510) blocks the exhaust hole (310); when the exhaust valve plate (510) is in a first open state, the compression chamber and the exhaust chamber (410) of the reciprocating compressor are connected through the exhaust valve plate (510) and the exhaust hole (310).

2. The reciprocating compressor according to claim 1, characterized in that: The exhaust valve plate (510) comprises a valve body (511) and a spiral spring bar (512); the valve body (511) is provided with a mounting hole, and the second end (5122) of the spiral spring bar (512) is fixedly connected to the hole wall of the mounting hole; In the first closed state, the spiral spring strip (512) is located in the mounting hole and forms a sheet-like structure to block the mounting hole; in the first open state, the spiral spring strip (512) protrudes from the mounting hole and forms a gas flow channel (513).

3. The reciprocating compressor according to claim 2, characterized in that: The exhaust valve plate (510) further comprises a limit bar, which is arranged on the valve body (511) and is located at one end of the valve body (511) facing the piston (200). The limit bar cooperates with the spiral spring bar (512) in a limiting manner in a direction from the exhaust chamber (410) to the compression chamber, and in the first closed state, the spiral spring bar (512) abuts against the limit bar.

4. The reciprocating compressor according to claim 2, characterized in that: The exhaust holes (310) and the exhaust valve plates (510) are both multiple in number, and the exhaust valve plates (510) are arranged in one-to-one correspondence with the exhaust holes (310), a line connecting the center of the valve body (511) and the first end (5121) of the spiral spring bar (512) forms an auxiliary line (800), the auxiliary lines (800) of the multiple exhaust valve plates (510) are not arranged in parallel, and the first end (5121) of the spiral spring bar (512) of each exhaust valve plate (510) is located within the same circumference.

5. The reciprocating compressor according to claim 1, characterized in that: The edge of the exhaust valve sheet (510) is connected to the valve plate (300), and the portion of the exhaust valve sheet (510) having the gas flow channel (513) is opposite to the exhaust hole (310).

6. The reciprocating compressor according to claim 1, characterized in that: Part of the exhaust valve plate (510) is disposed in the exhaust hole (310), and a side wall of the part of the exhaust valve plate (510) disposed in the exhaust hole (310) is connected to a hole wall of the exhaust hole (310).

7. The reciprocating compressor according to claim 1, characterized in that: A first groove is provided on a side of the valve plate (300) facing the piston (200); a first port of the exhaust hole (310) is opened on the bottom wall of the first groove; the bottom wall of the first groove includes a limiting mounting surface arranged around the first port; the exhaust valve plate (510) is fixedly arranged in the first groove and fixedly connected to the limiting mounting surface.

8. The reciprocating compressor according to claim 1, characterized in that: The valve plate (300) is provided with an air suction hole (320), and the reciprocating compressor further comprises an air suction valve plate (520), wherein the air suction valve plate (520) is provided on the valve plate (300) and is located on a side of the valve plate (300) facing the piston (200); When the intake valve plate (520) is in a second closed state, the intake valve plate (520) blocks the intake hole (320), and when the intake valve plate (520) is in a second open state, the compression chamber and the intake chamber (420) of the reciprocating compressor are connected through the intake hole (320).

9. The reciprocating compressor according to claim 8, characterized in that: The air intake valve plate (520) is an elastic component, and comprises a connecting portion (521) and a blocking portion (522). The connecting portion (521) is fixedly connected to the valve plate (300), and the blocking portion (522) is opposite to the air intake hole (320). In the second closed state, the blocking portion (522) is in contact with the valve plate (300) to block the air intake hole (320).

10. The reciprocating compressor according to claim 8, characterized in that The reciprocating compressor further comprises a cylinder head (120), wherein the cylinder head (120) is connected to the valve plate (300), the cylinder body (110) and the cylinder head (120) are respectively located on opposite sides of the valve plate (300), the cylinder head (120) and the valve plate (300) enclose an air cavity, and the cylinder head (120) is provided with a partition (330), and the partition (330) divides the air cavity into the exhaust cavity (410) and the intake cavity (420).

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