Pump body exhaust valve device and compressor

Abstract

The application discloses a pump body exhaust valve device and a compressor. The pump body exhaust valve device comprises a pump body assembly and an exhaust valve assembly. The pump body assembly comprises a first flange, and the first flange is provided with an exhaust port. The exhaust valve assembly is arranged at the exhaust port and is connected with the inner wall of the exhaust port through threads. The exhaust valve assembly comprises a valve shell, a valve upper cover, a push rod, a valve plate and a spring. The valve upper cover is arranged on the valve shell, the valve upper cover is provided with a through hole, the push rod is arranged in the through hole so that one end of the push rod extends into the valve shell, the valve plate is arranged in the valve shell and connected with the end of the push rod extending into the valve shell, and the spring is sleeved on the push rod and connected with the valve upper cover and the valve plate at two ends. The threads between the exhaust valve assembly and the inner wall of the exhaust port effectively improve the air tightness between the exhaust valve assembly and the exhaust port, help to improve the riveting or screw locking problem of the prior art, and avoid exhaust leakage.

Description

Technical Field

[0001] This invention relates to the field of compressor technology, and in particular to a pump body exhaust valve device and a compressor. Background Technology

[0002] The exhaust valve assembly is one of the key components of a rotary compressor, typically consisting of a valve seat, valve plate, and baffle. However, existing technologies have the following problems:

[0003] Firstly, the valve plate is mounted on the valve seat, and a baffle is then installed on the valve plate. The valve plate and baffle are fixed to the valve seat of the first flange by riveting or screwing. The valve seat has the compressor's gas exhaust port. The valve plate controls the one-way discharge of compressor gas, and the baffle limits the lift of the valve plate during opening. During installation, the valve plate often deviates from the center of the exhaust port, and gaps between the valve plate and the valve seat may occur due to machining issues. These factors can cause compressor exhaust leakage and performance degradation.

[0004] Secondly, the compressor compresses the gas. During the exhaust phase, the high-speed airflow passes through the exhaust port and is discharged via the exhaust valve assembly. When the valve plate opens, it impacts the valve plate baffle and rebounds at a certain speed. The valve plate bends and deforms, impacting the baffle at high speed. When the valve plate closes, it also impacts the valve seat. If the speed at which the valve plate impacts the baffle and valve seat is too high, the number of impacts between the valve seat and baffle is too many, and the fatigue of the valve plate increases with the number of bends, all of these factors directly affect the lifespan of the valve plate. They also shorten the effective opening time of the valve plate, affecting the performance of the compressor. This component is one of the most vulnerable parts of the compressor and carries a very high risk; therefore, the exhaust valve assembly has a significant impact on the performance and reliability of the compressor. Summary of the Invention

[0005] To address the problems in the prior art, the present invention provides an improved pump body exhaust valve device and compressor.

[0006] In a first aspect, the present invention discloses a pump body exhaust valve device, including a pump body assembly and an exhaust valve assembly; the pump body assembly includes a first flange, and the exhaust valve assembly is threadedly connected to the inner wall of an exhaust port provided on the first flange.

[0007] The exhaust valve assembly includes a valve housing, a valve cover, a push rod, a valve plate, and a spring. The valve cover is disposed on the valve housing and has a through hole. The push rod passes through the through hole so that one end of the push rod extends into the interior of the valve housing. The valve plate is disposed inside the valve housing and is connected to the end of the push rod that extends into the interior of the valve housing. The spring is sleeved on the push rod, and both ends of the spring are respectively connected to the valve cover and the valve plate.

[0008] In some embodiments, the valve housing includes a first end and a second end opposite to each other, and both the first end and the second end are provided with an opening, the two openings forming an airflow channel with the inner wall of the valve housing;

[0009] The valve cover is connected to the first end of the valve housing, and the cross-sectional area of ​​the valve plate is not less than the cross-sectional area of ​​the opening at the second end;

[0010] The spring undergoes elastic deformation to cause the valve plate to switch back and forth between a first state and a second state. The first state is when the valve plate closes the opening at the second end, and the second state is when the valve plate moves away from the opening at the second end.

[0011] In some embodiments, the valve housing includes a main body segment and a connecting segment, the diameter of the main body segment gradually decreasing from the middle to both ends, the connecting segment being connected to the bottom of the main body segment to form the second end of the valve housing, and the inner wall of the connecting segment defining an opening at the second end.

[0012] In some embodiments, the outer wall surface of the connecting section is provided with threads, and the inner wall surface of the exhaust port is provided with threads. The threads of the connecting section and the threads of the exhaust port cooperate with each other to form a threaded connection between the exhaust valve assembly and the exhaust port.

[0013] In some embodiments, the connecting segment extends toward the valve plate to form a flange, and when the valve plate is in the first state, the valve plate contacts the flange to close the opening at the second end of the valve plate.

[0014] In some embodiments, the top of the flange is an upwardly projecting arc shape, and the bottom surface of the valve plate is horizontally disposed, so that when the valve plate is in the first state, a line seal is formed between the bottom surface of the valve plate and the top of the flange.

[0015] In some embodiments, the exhaust valve assembly further includes a plurality of guide vanes, which are spaced apart on the inner wall surface of the main body segment, and each pair of adjacent guide vanes defines a guide channel with the inner wall surface of the main body segment.

[0016] In some embodiments, the lower end face of the guide plate is spaced apart from the top of the flange by a certain distance, and the valve plate is disposed between the flange and the guide plate. When the valve plate is in the second state, the top surface of the valve plate abuts against the lower end face of the guide plate.

[0017] In some embodiments, the guide vanes are evenly spaced on the inner wall surface of the main body segment.

[0018] In a second aspect, the present invention discloses a compressor including the pump body exhaust valve device as described in any of the first aspects. The compressor further includes a housing assembly, a distributor assembly, and a motor assembly. The pump body exhaust device is disposed within the housing assembly. The distributor assembly is fixed to the periphery of the housing assembly, and the inner cavity of the distributor assembly communicates with the pump body assembly. The motor assembly is connected to the pump body assembly to drive the pump body assembly.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] The pump body exhaust valve device disclosed in this invention can effectively improve the airtightness between the exhaust valve assembly and the exhaust port through the threaded connection between the exhaust valve assembly and the inner wall of the exhaust port. This helps to improve the problem of poor riveting or screw tightening in the prior art, avoid exhaust leakage, and improve the performance of the compressor.

[0021] Furthermore, by setting a push rod connected to the valve plate, the valve plate and the push rod move as a whole when the gas pushes the valve plate, which avoids the valve plate bending and reduces its fatigue risk; while the spring connected between the valve plate and the valve cover provides cushioning for the movement of the valve plate and extends the service life of the valve plate. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a partial structural diagram of the pump body exhaust valve device provided in an embodiment of the present invention;

[0024] Figure 2 A partial axial cross-sectional view of the pump body exhaust valve device provided in an embodiment of the present invention;

[0025] Figure 3 A structural diagram of the exhaust valve assembly of the pump body exhaust valve device provided in an embodiment of the present invention;

[0026] Figure 4 An axial cross-sectional view of the exhaust valve assembly of the pump body exhaust valve device provided in an embodiment of the present invention;

[0027] Figure 5 for Figure 4 An enlarged schematic diagram of node B of the exhaust valve assembly shown.

[0028] Figure 6 Another axial cross-sectional view of the exhaust valve assembly of the pump body exhaust valve device provided in the embodiment of the present invention;

[0029] Figure 7 A cross-sectional view of the exhaust valve assembly of the pump body exhaust valve device provided in an embodiment of the present invention;

[0030] Figure 8 A cross-sectional schematic diagram of a compressor provided in an embodiment of the present invention;

[0031] Figure 9 A plan view of an exhaust valve assembly in the prior art;

[0032] Figure 10 for Figure 9 The diagram shows a cross-sectional view of the exhaust valve assembly along line AA.

[0033] Reference numerals in the attached figures: Pump body exhaust valve device 1; Pump body assembly 11; First flange 111; Upper silencer 112; Upper cylinder 113; Upper roller 114; Upper partition 115; Lower partition 116; Lower cylinder 117; Lower roller 118; Lower silencer 119; Second flange 120; Exhaust valve assembly 12; Valve housing 121; Main body section 1211; Connecting section 1212; Flange 1213; Valve cover 122; Main body part 1221; Connecting part 1222; Valve plate 123; Push rod 124; Spring 125; Guide plate 126; Housing assembly 2; Distributor assembly 3; Motor assembly 4; Stator 41; Rotor 42. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and, or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and, or collections thereof.

[0036] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0037] It should also be further understood that the terms “and” and “or” as used in this specification and the appended claims refer to any combination of one or more of the associated listed items and all possible combinations, and include such combinations.

[0038] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

[0039] This invention discloses a pump body exhaust valve device 1, applied to a rotary compressor, such as... Figure 1 , Figure 2 as well as Figure 8 As shown, the pump body exhaust valve device 1 may include a pump body assembly 11 and an exhaust valve assembly 12. The pump body assembly 11 is used to compress the refrigerant entering it. The exhaust valve assembly 12 is mounted on the pump body assembly 11 and is used to control the unidirectional flow of gas and ensure that the pressurized refrigerant can be smoothly discharged from the pump body assembly 11.

[0040] The pump body assembly 11 may include a first flange 111, which serves as a mounting base for the exhaust valve assembly 12. The first flange 111 has an exhaust port, and the exhaust valve assembly 12 is disposed at this exhaust port, with the exhaust valve assembly 12 connected to the inner wall of the exhaust port via threads. This threaded connection between the exhaust valve assembly 12 and the inner wall of the exhaust port simplifies the installation process and ensures good sealing performance between the exhaust valve assembly 12 and the exhaust port, avoiding leakage problems caused by poor valve plate riveting in the prior art.

[0041] See also Figure 3 and Figure 4The exhaust valve assembly 12 may include a valve housing 121, a valve cover 122, a valve plate 123, a push rod 124, a spring 125, and a guide vane 126. The valve housing 121 serves as the outer shell of the exhaust valve assembly 12. The valve cover 122 is disposed on the valve housing 121 and has a through hole. The push rod 124 passes through the through hole so that one end of the push rod 124 extends into the interior of the valve housing 121. The valve plate 123 is disposed within the valve housing 121, and the valve plate 123 is connected to the end of the push rod 124 extending into the interior of the valve housing 121. The spring 125 is a compression spring, sleeved on the push rod 124, and its two ends are respectively connected to the valve cover 122 and the valve plate 123. When high-pressure gas impacts valve plate 123 from the side away from push rod 124, and the gas pressure on the side of valve plate 123 away from push rod 124 is greater than the sum of the elastic force generated by the compression of spring 125 and the gas pressure on the side of valve plate 123 close to push rod 124, valve plate 123 drives push rod 124 to move closer to valve cover 122 to compress spring 125. In this process, by setting push rod 124 connected to valve plate 123, when gas pushes valve plate 123, valve plate 123 and push rod 124 move as a whole, avoiding bending of valve plate 123; spring 125 provides cushioning for the movement of valve plate 123. When high-pressure gas is discharged, and the gas pressure on the side of valve plate 123 away from push rod 124 is less than the sum of the elastic force generated by the compression of spring 125 and the gas pressure on the side of valve plate 123 near push rod 124, spring 125 rebounds and pushes valve plate 123 to move away from valve cover 122. Thus, valve plate 123, push rod 124, and spring 125 cooperate to open and close the exhaust valve assembly 12. Several guide vanes 126 are spaced apart on the inner wall of valve housing 121. Each pair of adjacent guide vanes 126 forms a guide channel with the inner wall of valve housing 121 to guide airflow and accelerate gas flow.

[0042] Specifically, the valve housing 121 includes a first end and a second end, which are disposed opposite to each other. Both the first and second ends have openings that form an airflow channel with the inner wall of the valve housing 121. Gas enters the valve housing 121 through the opening at the second end, flows through the airflow channel, and exits the valve housing 121 through the opening at the first end. A valve cover 122 is connected to the first end of the valve housing 121. A valve plate 123 is disposed inside the valve housing 121, and the cross-sectional area of ​​the valve plate 123 is not less than the cross-sectional area of ​​the opening at the second end, so that the valve plate 123 closes the opening at the second end. It should be noted that although the valve cover 122 is connected to the first end of the valve housing 121, it does not close the opening at the first end. As the gas pressure on the side of the valve plate 123 away from the push rod 124 changes, the spring 125 undergoes elastic deformation, causing the valve plate 123 to switch back and forth between a first state and a second state. The first state is when the valve plate 123 closes the opening at the second end, and the second state is when the valve plate 123 moves away from the opening at the second end. The first state is the closed state of the exhaust valve assembly 12, and the second state is the open state of the exhaust valve assembly 12.

[0043] Specifically, in combination Figure 5 The valve housing 121 may include a main body section 1211 and a connecting section 1212. The diameter of the main body section 1211 gradually decreases from the middle to both ends, thus giving the main body section 1211 a drum shape that expands in the middle and narrows at both ends. The connecting section 1212 is connected to the bottom of the main body section 1211 to form the second end of the valve housing 121, and the inner wall of the connecting section 1212 defines the opening at the second end. This drum-shaped main body section 1211 is beneficial for reducing noise in the exhaust airflow. Its noise reduction utilizes the sound reflection effect at the abrupt change in cross-section in the airflow channel, thereby attenuating the passing sound energy and achieving a noise reduction effect. The noise reduction formula is:

[0044]

[0045] In the formula, TL is the noise reduction amount, m = S1 / S2, where m is the expansion ratio, S1 is the area of ​​the cross-section corresponding to the position with the largest diameter in the middle of the main body segment 1211, S2 is the area of ​​the cross-section corresponding to the position with the smallest diameter at both ends of the main body segment 1211, and the larger m is, the greater the noise reduction amount; k = 2π / λ, where k is the wave number, λ is the wavelength; and l is the height of the main body segment 1211.

[0046] In some embodiments, the outer wall surface of the connecting segment 1212 is threaded, and the inner wall surface of the exhaust port of the first flange 111 is threaded. The threads of the connecting segment 1212 and the threads of the exhaust port engage with each other to form a threaded connection between the exhaust valve assembly 12 and the exhaust port, thereby improving the sealing performance between the exhaust valve assembly 12 and the exhaust port. The connecting segment 1212 extends toward the valve plate 123 to form a flange 1213. The flange 1213 protrudes from the position where the connecting segment 1212 connects with the main body segment 1211. When the valve plate 123 is in the first state, the valve plate 123 contacts the flange 1213 to close the opening at the second end.

[0047] Combined Figure 2 , Figure 9 as well as Figure 10 In some embodiments, the top of the flange 1213 is an upwardly protruding arc shape, and the bottom surface of the valve plate 123 is horizontally arranged so that when the valve plate 123 is in the first state, a line seal is formed between the bottom surface of the valve plate 123 and the top of the flange 1213, further improving the airtightness of the exhaust valve assembly 12 when closed. The distance from the bottom of the connecting section 1212 to the top of the flange 1213 is L2, which is the thickness of the second end opening of the valve housing 121, and L2 ≥ 2mm; while the distance from the valve seat end face to its boss in the prior art is L1, which is the thickness of the exhaust port in the prior art. The prior art needs to consider fixing the baffle to the valve seat by riveting or screw locking. Considering its structural strength and large stress, L1 ≥ 4mm. Therefore, the minimum dimension of L2 in the present invention can be designed to be smaller than the minimum dimension of L1, which can reduce the clearance volume of the compressor and improve the performance of the compressor.

[0048] Combined Figure 3 In some embodiments, the valve cover 122 may include a circular main body 1221 and a connecting portion 1222 disposed around the main body 1221. The main body 1221 may be circular, and the aforementioned through hole for the push rod 124 to pass through is disposed on the main body 1221. This through hole may also be circular. Preferably, the through hole, the main body 1221, and the valve housing 121 are coaxially arranged. The connecting portion 1222 connects the main body 1221 and the first end of the valve housing 121. The connecting portion 1222 is spaced apart to expose the opening at the first end of the valve housing 121, allowing gas to be discharged from the opening at the first end. Specifically, the connecting portion 1222 may be welded to the first end of the valve housing 121. It can be understood that, when meeting the noise reduction requirements, the valve cover 122 may also be disposed at a position relatively inward from the first end of the valve housing 121.

[0049] See also Figure 7In some embodiments, the valve plate 123 may be circular, with an area larger than the cross-sectional area of ​​the connecting section 1212 of the valve housing 121, so that it can close the opening at the second end of the valve housing 121; the area of ​​the valve plate 123 is smaller than the cross-sectional area of ​​the main body section 1211 of the valve housing 121 above the flange 1213, so that it can move inside the valve housing 121. The through hole, the main body 1221, the valve housing 121, the push rod 124, and the valve plate 123 are coaxially arranged, making the axial force on the valve plate 123 more uniform and extending the service life of the valve plate 123 and the push rod 124. The valve plate 123 can be made of stainless steel strip, which has good rigidity. The surface of the valve plate 123 is finely polished, which can effectively cooperate with the flange 1213 for sealing, further improving the airtightness.

[0050] In some embodiments, the guide vane 126 may be an irregular quadrilateral, with one side connected to the inner wall of the valve housing 121 being an arc similar to the inner wall of the valve housing 121, and the other three sides being straight. Specifically, the two sides of the guide vane 126 near both ends of the valve housing 121 are horizontally arranged, and the side opposite to the arc is vertically arranged. The flow channel formed between the guide vane 126 and the inner wall of the valve housing 121 can accelerate gas flow, allowing the airflow to flow orderly between the guide vanes 126, effectively preventing high-speed airflow from forming vortices in the "drum-shaped" cavity of the main body section 1211, thus avoiding exhaust obstruction. The guide vanes 126 may be evenly spaced on the inner wall surface of the main body section 1211 to ensure that the airflow velocity in each flow channel is the same, avoiding the formation of pressure differences between different airflows, which would slow down the exhaust velocity.

[0051] See also Figure 5 as well as Figure 6 The arrow at the bottom of the diagram indicates the gas flow direction. The lower end face of the guide vane 126 is spaced apart from the top of the flange 1213, and the valve plate 123 is disposed between the flange 1213 and the guide vane 126. When the valve plate 123 is in the second state, the top surface of the valve plate 123 abuts against the lower end face of the guide vane 126, thereby limiting the stroke of the valve plate 123. The thickness of the valve plate 123 is h, and the distance between the top of the flange 1213 and the lower end face of the guide plate 126 is H. The value of h / H is defined as a, where 0.01 < a < 1. a < 1 allows the valve plate 123 to move between the lower end face of the guide plate 126 and the top of the flange 1213. a > 0.01 can prevent the valve plate 123 from being too thin or the distance between the top of the flange 1213 and the lower end face of the guide plate 126 from being too large, thereby avoiding the problem of excessively strong impact between the valve plate 123 and the guide plate 126 or between the valve plate 123 and the flange 1213, which would shorten its service life.

[0052] See also Figure 8The present invention also discloses a compressor applied in an air conditioning system. In addition to the aforementioned pump body exhaust valve device 1, the compressor also includes a housing assembly 2, a distributor assembly 3, and a motor assembly 4. The pump body exhaust device is disposed within the housing assembly 2. The distributor assembly 3 is fixed to the periphery of the housing assembly 2, and its inner cavity communicates with the pump body assembly 11 of the pump body exhaust valve device 1. The distributor assembly 3 is used to separate the mixed refrigerant entering the compressor from the air conditioning system into a gas-liquid state, and introduce the separated gaseous refrigerant into the pump body assembly 11. The motor assembly 4 is connected to the pump body assembly 11 to drive the pump body assembly 11 to pressurize the gaseous refrigerant inside.

[0053] Specifically, the pump body assembly 11 of the pump body exhaust valve device 1 includes, in addition to the first flange 111 mentioned above, a crankshaft, an upper muffler 112, an upper cylinder 113, an upper roller 114, an upper partition 115, a lower partition 116, a lower cylinder 117, a lower roller 118, a second flange 120, and a lower muffler 119; the crankshaft is sequentially connected to the upper muffler 112, the first flange 111, the upper cylinder 113, the upper roller 114, the upper partition 115, the lower partition 116, the lower cylinder 117, the lower roller 118, the second flange 120, and the lower muffler 119 to drive the rotation of each component.

[0054] A first flange 111 is mounted on the upper cylinder 113, and an upper muffler 112 is mounted on the side of the first flange 111 away from the upper cylinder 113, forming a muffler cavity with the side of the first flange 111. Specifically, the upper muffler 112 is fastened to the side of the first flange 111, and both the upper muffler 112 and the first flange 111 have through holes in their middle portions for the crankshaft to pass through. The first flange 111 extends away from the upper cylinder 113 to form an extension portion, which covers the outer periphery of the crankshaft. The edge of the through hole on the upper muffler 112 is sealed to the side of the extension portion, thus sealing the upper muffler 112 with the first flange 111, enhancing the sealing effect of the muffler cavity, and thereby increasing the muffler's noise reduction effect. The upper roller 114 is disposed inside the upper cylinder 113. The crankshaft, upper roller 114, and sliding vanes (not shown in the figure) divide the interior of the upper cylinder 113 into an intake zone and an exhaust zone (not shown in the figure). The crankshaft can drive the upper roller 114 to rotate. The refrigerant that just enters the upper cylinder 113 is in the intake zone. After the rotation of the crankshaft and the upper roller 114, the volume of the upper cylinder 113 gradually decreases, compressing the low-temperature, low-pressure gaseous refrigerant into a high-temperature, high-pressure gaseous refrigerant. The high-pressure gaseous refrigerant is discharged through the exhaust port disposed on the first flange 111 on one end face of the upper cylinder 113. The upper baffle 115 and the lower baffle 116 are disposed between the upper cylinder 113 and the lower cylinder 117. The crankshaft and the upper baffle 115 cooperate with the upper cylinder 113 to form a compression chamber (not shown in the figure).

[0055] The connection method and function of the lower partition 116, lower cylinder 117, lower roller 118, second flange 120 and lower muffler 119 are similar to those of the upper muffler 112, first flange 111, upper cylinder 113, upper roller 114 and upper partition 115, and will not be described again here.

[0056] The motor assembly 4 may include a stator 41 and a rotor 42. The rotor 42 is disposed in the middle of the stator 41 and is connected to the crankshaft. When the stator 41 is powered on, it generates a magnetic field. The conductors in the rotor 42 generate an induced electromotive force and produce a current. Under the action of the magnetic field, a torque is generated to drive the rotor 42 to rotate, and the rotor 42 in turn drives the crankshaft to rotate.

[0057] Compared with the prior art, the pump body exhaust valve device 1 and compressor disclosed in this invention have the following advantages:

[0058] The exhaust valve assembly 12 is small in size, therefore, the valve seat reserved area on the first flange 111 is small, which helps to improve the structural strength of the first flange 111;

[0059] The exhaust valve assembly 12 is connected to the inner wall of the exhaust port on the first flange 111 by a thread, which helps to improve the problem of poor riveting or screw tightening in the prior art, avoid exhaust leakage, and improve compressor performance;

[0060] Using a push rod 124 to connect the valve plate 123 and using a spring 125 to buffer the valve plate 123 helps to reduce the risk of fatigue fracture of the valve plate 123.

[0061] The valve housing 121 has a built-in guide vane 126, which can efficiently guide the flow and improve the exhaust rate;

[0062] The valve body 121 has a drum-shaped design that expands in the middle and narrows at both ends, which can effectively reduce exhaust noise.

[0063] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A pump body exhaust valve device, characterized in that, It includes a pump body assembly and an exhaust valve assembly; the pump body assembly includes a first flange, and the exhaust valve assembly is threadedly connected to the inner wall of an exhaust port provided on the first flange; The exhaust valve assembly includes a valve housing, a valve cover, a push rod, a valve plate, and a spring. The valve cover is disposed on the valve housing and has a through hole. The push rod passes through the through hole so that one end of the push rod extends into the interior of the valve housing. The valve plate is disposed inside the valve housing and is connected to the end of the push rod that extends into the interior of the valve housing. The spring is sleeved on the push rod, and both ends of the spring are respectively connected to the valve cover and the valve plate. The valve housing includes a first end and a second end opposite to each other, both of which have openings. The two openings and the inner wall of the valve housing form an airflow channel. The valve cover is connected to the first end of the valve housing. The cross-sectional area of ​​the valve plate is not less than the cross-sectional area of ​​the opening at the second end. The spring undergoes elastic deformation to cause the valve plate to switch back and forth between a first state and a second state. The first state is when the valve plate closes the opening at the second end, and the second state is when the valve plate moves away from the opening at the second end. The valve housing includes a main body section and a connecting section. The diameter of the main body section gradually decreases from the middle to both ends. The connecting section is connected to the bottom of the main body section to form the second end of the valve housing. The inner wall of the connecting section defines an opening at the second end. The exhaust valve assembly also includes a plurality of guide vanes, which are spaced apart on the inner wall surface of the main body section, and each pair of adjacent guide vanes and the inner wall surface of the main body section define a guide channel.

2. The pump body exhaust valve device according to claim 1, characterized in that, The outer wall of the connecting section is threaded, and the inner wall of the exhaust port is threaded. The threads of the connecting section and the threads of the exhaust port cooperate with each other to form a threaded connection between the exhaust valve assembly and the exhaust port.

3. The pump body exhaust valve device according to claim 1, characterized in that, The connecting segment extends toward the valve plate to form a flange. When the valve plate is in the first state, the valve plate contacts the flange to close the opening at the second end of the valve plate.

4. The pump body exhaust valve device according to claim 3, characterized in that, The top of the flange is an upwardly protruding arc shape, and the bottom surface of the valve plate is horizontally arranged so that when the valve plate is in the first state, a line seal is formed between the bottom surface of the valve plate and the top of the flange.

5. The pump body exhaust valve device according to claim 4, characterized in that, The lower end face of the guide plate is spaced apart from the top of the flange by a certain distance. The valve plate is disposed between the flange and the guide plate. When the valve plate is in the second state, the top surface of the valve plate abuts against the lower end face of the guide plate.

6. The pump body exhaust valve device according to claim 5, characterized in that, The guide vanes are evenly spaced on the inner wall surface of the main body section.

7. A compressor, characterized in that, The compressor includes the pump body exhaust valve device according to any one of claims 1 to 6, and further includes a housing assembly, a distributor assembly and a motor assembly. The pump body exhaust valve device is disposed inside the housing assembly. The distributor assembly is fixed to the periphery of the housing assembly and its inner cavity communicates with the pump body assembly. The motor assembly is connected to the pump body assembly to drive the pump body assembly.

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