WO2024001523A1 - Ensemble soupape d'échappement et compresseur à spirale le comprenant - Google Patents

Ensemble soupape d'échappement et compresseur à spirale le comprenant Download PDF

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Publication number
WO2024001523A1
WO2024001523A1 PCT/CN2023/092704 CN2023092704W WO2024001523A1 WO 2024001523 A1 WO2024001523 A1 WO 2024001523A1 CN 2023092704 W CN2023092704 W CN 2023092704W WO 2024001523 A1 WO2024001523 A1 WO 2024001523A1
Authority
WO
WIPO (PCT)
Prior art keywords
exhaust valve
exhaust
piston
valve housing
valve assembly
Prior art date
Application number
PCT/CN2023/092704
Other languages
English (en)
Chinese (zh)
Inventor
黄志刚
徐天赐
牟英涛
Original Assignee
上海海立新能源技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 上海海立新能源技术有限公司 filed Critical 上海海立新能源技术有限公司
Publication of WO2024001523A1 publication Critical patent/WO2024001523A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
    • F04C18/0215—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/06—Silencing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • F04C29/124—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps
    • F04C29/126—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps of the non-return type

Definitions

  • the present invention relates to the field of compressors, and in particular, to an exhaust valve assembly and a scroll compressor including the same.
  • Vehicle scroll compressors generally adopt a horizontal structure. Reed-type exhaust valves have become the first choice for horizontal scroll compressor exhaust valves because of their simple structure and easy and quick closing during shutdown.
  • Reed exhaust valve includes reeds, baffles, fastening bolts and other components. Different types of compressors use different sizes and shapes of exhaust valves due to their different displacements. If the old model cannot be directly borrowed, it will need to be redesigned and fully inspected, resulting in a longer compressor development cycle. Mismatched reed-type exhaust valves can easily lead to loud exhaust noise during actual use, or even failure such as exhaust valve plate breakage.
  • Patent CN114263592A has designed an exhaust valve assembly consisting of a valve plate and a baffle to address the above problems.
  • the valve plate is mainly composed of a fixed part, a moving part and a head.
  • the baffle is mainly composed of a fixed installation section, a transitional connection section and a lift. It consists of limit sections and so on.
  • the longitudinal sections of the transition connection section and the lift limit section are both arc-shaped, with radii of R1 and R2 respectively, and R2>R1.
  • the valve plate is designed to increase stepwise from the fixed part to the head direction.
  • the object of the present invention is to provide an exhaust valve assembly and a scroll compressor including the same.
  • the exhaust valve assembly is originally a novel piston exhaust valve assembly.
  • the hollow cavity of the valve housing serves as the exhaust chamber, and the exhaust channel on the side wall of the exhaust valve housing serves as a muffler exhaust hole, thereby improving exhaust noise and exhaust pulsation, and improving the user experience.
  • a first aspect of the invention provides an exhaust valve assembly, including:
  • the exhaust valve housing includes a side wall and a hollow cavity.
  • the side wall is provided with at least one first exhaust channel.
  • the at least one first exhaust channel connects the hollow cavity and the exhaust valve housing.
  • the first end of the exhaust valve housing is provided with a vent passage and partially closes the hollow cavity, and the second end can be connected to the compressor static plate;
  • a piston is arranged in the hollow cavity of the exhaust valve housing, and the shape of the piston matches the inner wall of the exhaust valve housing;
  • a telescopic structure is arranged in the hollow cavity of the exhaust valve housing.
  • the two ends of the telescopic structure are respectively connected to the first end of the hollow cavity and the piston.
  • the telescopic structure drives the piston to move at the desired position.
  • the exhaust valve housing moves in the axial direction.
  • the exhaust valve assembly further includes:
  • a guide connecting rod one end of which is fixed to the first end of the hollow cavity of the exhaust valve housing;
  • the piston and the telescopic structure are sleeved on the guide connecting rod, and the telescopic structure can telescope along the axial direction of the guide connecting rod, and the piston can telescope along the axial direction of the guide connecting rod. move.
  • the exhaust valve assembly further includes a valve seat fixed to the exhaust valve.
  • the inner wall of the second end of the air valve housing is connected to the other end of the guide connecting rod;
  • the valve seat is provided with at least one second exhaust channel, and the at least one second exhaust channel communicates with the hollow cavity and the outside of the exhaust valve housing.
  • valve seat and the side wall are one piece.
  • the side wall is provided with a plurality of first exhaust channels, and the plurality of first exhaust channels are evenly distributed along the circumferential direction of the side wall.
  • the side wall is provided with a plurality of first exhaust channels, and the plurality of first exhaust channels satisfy:
  • the radial size of the first exhaust channel is less than or equal to 2mm; and/or
  • the distance between the first exhaust channels is less than or equal to 1.5 times the radial size of the first exhaust channels.
  • the telescopic structure is a spring.
  • the piston is provided with a first through hole, which is sleeved on the guide connecting rod through a clearance fit between the first through hole and the guide connecting rod.
  • the first end of the exhaust valve housing is provided with a counterbore on one side facing the hollow cavity, and the guide connecting rod and the first end of the exhaust valve housing pass through the The counterbore is connected with an interference fit at one end of the guide connecting rod.
  • the side wall at the second end of the exhaust valve housing is provided with threads, and is fixedly connected to the compressor static plate through the threads.
  • a second aspect of the invention provides a scroll compressor including the exhaust valve assembly.
  • the invention provides a novel piston exhaust valve assembly, in which the hollow cavity of the exhaust valve housing serves as the exhaust chamber, and the exhaust channel on the side wall of the exhaust valve housing serves as the muffler exhaust hole.
  • the piston exhaust valve assembly can be installed offline, which is more suitable for automated production.
  • the exhaust channel and piston are designed symmetrically, and there is no installation direction requirement; further , compared with traditional reed-type exhaust valves, the exhaust valve assembly and the compressor static plate can be directly connected through threads, with no directionality requirements, high fault tolerance, and reduced manufacturing costs.
  • Figure 1 is a schematic structural diagram of an exhaust valve assembly according to an embodiment of the present invention.
  • Figure 2 is a schematic structural diagram of an exhaust valve housing according to an embodiment of the present invention.
  • Figure 3 is a schematic structural diagram of a piston according to an embodiment of the present invention.
  • Figure 4 is a schematic structural diagram of a guide link according to an embodiment of the present invention.
  • Figure 5 is a schematic structural diagram of a valve seat according to an embodiment of the present invention.
  • FIG. 6 is a state diagram of the exhaust valve assembly during exhaust according to an embodiment of the present invention.
  • Example embodiments will now be described more fully with reference to the accompanying drawings.
  • Example embodiments may, however, be embodied in various forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concepts of the example embodiments. To those skilled in the art.
  • the described features, structures or characteristics may be combined in any suitable manner in one or more embodiments.
  • first, second, etc. are used herein to refer to various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element.
  • first interface and the second interface are represented.
  • singular forms “a”, “an” and “the” are intended to include the plural forms as well, unless the context indicates otherwise.
  • the terms “comprising” and “including” indicate the presence of stated features, steps, operations, elements, components, items, categories, and/or groups, but do not exclude one or more other features, steps, operations, The presence, occurrence, or addition of elements, components, items, categories, and/or groups.
  • the exhaust valve assembly includes: an exhaust valve housing, including a side wall and a hollow cavity.
  • the side wall is provided with at least one A first exhaust channel, the at least one first exhaust channel connects the hollow cavity and the outside of the exhaust valve housing, and a vent channel is provided at the first end of the exhaust valve housing and partially closes the hollow
  • the second end of the cavity can be connected to the compressor static plate;
  • the piston is arranged in the hollow cavity of the exhaust valve housing, and the shape of the piston matches the inner wall of the exhaust valve housing;
  • telescopic structure set Placed in the hollow cavity of the exhaust valve housing, the two ends of the telescopic structure are respectively connected to the first end of the hollow cavity and the piston.
  • the telescopic structure drives the piston to rotate in the exhaust valve. Movement of the valve housing in the axial direction.
  • the invention provides a novel piston exhaust valve assembly, in which the hollow cavity of the exhaust valve housing serves as the exhaust chamber, and the exhaust channel on the side wall of the exhaust valve housing serves as the muffler exhaust hole.
  • the piston exhaust valve assembly can be installed offline, which is more suitable for automated production.
  • the exhaust channel and piston are designed symmetrically, and there is no installation direction requirement; further , compared with traditional reed-type exhaust valves, the exhaust valve assembly and the compressor static plate can be directly connected through threads, with no directionality requirements, high fault tolerance, and reduced manufacturing costs.
  • FIG. 1 is a schematic structural diagram of an exhaust valve assembly according to an embodiment of the present invention. It can be seen that the exhaust valve assembly includes an exhaust valve housing 1, a piston 2, a telescopic structure 3, a guide connecting rod 4 and a valve seat 5.
  • FIG. 2 is a schematic structural diagram of an exhaust valve housing according to an embodiment of the present invention.
  • the exhaust valve housing 1 includes a side wall 11 and a hollow cavity 12.
  • the side wall 1 is provided with a plurality of first rows. Air passage 111.
  • the first exhaust passage 111 connects the hollow cavity 12 with the outside of the exhaust valve housing 1.
  • the first end 13 of the exhaust valve housing 1 is provided with a vent passage 15 and a partial
  • the hollow cavity 12 is closed, and the second end 14 can be connected to the compressor static plate;
  • the exhaust valve housing 1 can be cylindrical, that is, the side wall 11 and the first end 13 form a cylindrical shape.
  • the hollow cavity 12 also cylindrical.
  • the axis of the cylindrical side wall 11 can coincide with the axis of the cylindrical hollow cavity 12.
  • the present invention does not impose restrictions on the shapes of the exhaust valve housing 1 and the hollow cavity 12. They can be shaped according to the characteristics of the compressor. The specific structure is determined.
  • FIG. 3 is a schematic structural diagram of the piston in the embodiment of FIG. 2 .
  • the piston 2 is arranged in the hollow cavity 12 of the exhaust valve housing 1 .
  • the telescopic structure 3 is arranged in the hollow cavity 12 of the exhaust valve housing 1.
  • the two ends of the telescopic structure 3 are respectively connected to the first end 13 of the hollow cavity 12 and the piston 2.
  • One end of the telescopic structure 3 Fixed with the first end 13, at this time, the telescopic structure 3 telescopically drives the piston 1 to move in the axial direction of the exhaust valve housing (z direction in Figure 1). Since the piston 2 needs to move along the cylindrical axis direction of the hollow cavity 12, the piston 2
  • the shape matches the inner wall of the exhaust valve housing 1.
  • the piston is a column piston as shown in Figure 2, and the outer diameter of the piston is slightly smaller than the diameter of the hollow cavity 12 ( inner diameter of the exhaust valve housing).
  • the piston when the exhaust valve assembly only includes the exhaust valve housing 1, the piston 2 and the telescopic structure 3, to ensure the normal movement of the piston in the housing, the piston needs to have a certain thickness to function as the piston.
  • the present invention does not limit the thickness of the piston, as long as it plays a certain limiting role.
  • the telescopic structure 3 can be a spring, a rubber elastic material, a pipe telescopic device, etc., and any telescopic mechanism that can drive the piston 2 to reciprocate in the hollow cavity 12 can be used in the present invention.
  • the side wall 11 at the second end 14 of the exhaust valve housing 1 is provided with threads 112.
  • the exhaust valve assembly When the exhaust valve assembly is used in a compressor, it can be fixedly connected to the compressor static plate through the threads 112, such as It is fixedly connected to the flange at the static plate. At this time, the thread 112 meshes with the thread of the flange.
  • the exhaust valve housing can also be fixedly connected to the compressor stationary plate flange in an interference fit manner to achieve communication between the hollow cavity 12 of the exhaust valve housing and the compressor exhaust channel.
  • the exhaust valve assembly of the present invention can be installed first and then assembled on the compressor, which simplifies the production process.
  • the exhaust valve assembly may further include a guide link 4 .
  • Figure 4 is a schematic structural diagram of the guide link of this embodiment.
  • the guide link 4 is a cylindrical polished rod.
  • One end of the guide link 4 is fixed to the first end 13 of the hollow cavity 12 of the exhaust valve housing.
  • a counterbore can be provided on the side of the first end 13 of the exhaust valve housing 1 facing the hollow cavity 12, and the guide connecting rod 4 is connected to the exhaust valve housing.
  • the first end 13 is connected with an interference fit to one end of the guide connecting rod 4 through a counterbore.
  • the piston 2 and the telescopic structure 3 are sleeved on the guide connecting rod 4.
  • a first through hole 21 can be provided in the center of the piston 2.
  • the guide connecting rod 4 is sleeved on the guide connecting rod 4 with a clearance fit.
  • the telescopic structure 3 can also be clearance-fitted with the guide connecting rod 4 by providing a through hole, so that the telescopic structure 3 can expand and contract along the axial direction of the guide connecting rod 4, and the piston can move along the axial direction of the guide connecting rod 4.
  • the guide link 4 moves in the axial direction.
  • the main function of the guide connecting rod 4 is to limit the radial movement of the telescopic structure and the piston. Its outer diameter is slightly smaller than the through hole of the telescopic structure and the inner diameter of the first through hole of the piston.
  • the guide connecting rod 4 allows the telescopic structure 3 to only move along the guide direction.
  • the connecting rod 4 is compressed and extended in the axial direction to avoid deflection during compression and recovery of the telescopic structure, thereby affecting the movement of the piston in the hollow cavity.
  • the exhaust valve assembly may also include a valve seat 5.
  • Figure 5 is a structural schematic diagram of the valve seat in the embodiment of Figure 1.
  • the valve seat 5 is fixed to the inner wall of the second end 14 of the exhaust valve housing 1.
  • the seat 5 can be embedded in the exhaust valve housing 1 in an interference fit manner, or can be integrated with the side wall.
  • the valve seat 5 is connected to the other end of the guide link 4, that is, the guide link 4 can be further fixed through the valve seat 5.
  • the fixed connection method of the two is not limited, such as through the central through hole of the valve seat. It is connected with an interference fit at the other end of the guide link 4.
  • the valve seat 5 is provided with at least one second exhaust channel 51 , and the at least one second exhaust channel 51 communicates with the hollow cavity 12 and the outside of the exhaust valve housing 1 .
  • the present invention also provides a scroll compressor including the above exhaust valve assembly.
  • the scroll compressor can be horizontal or vertical.
  • the structure and basic parameters of each component will be further described below through the working principle of the exhaust valve assembly.
  • Figure 6 is a state diagram of the exhaust valve assembly during exhaust according to an embodiment of the present invention. specifically:
  • the force exerted by the compressor exhaust pressure on the piston causes the piston to move away from the static plate, and at the same time overcomes the dynamic friction and expansion caused by the contact between the lower end surface of the piston and the inner wall of the exhaust valve housing.
  • the elastic force generated by the compression of the structure and the vent channel set at the first end of the exhaust valve housing connect the inside of the exhaust valve housing and the outside of the exhaust valve housing to ensure that there is no pressure difference on the upper and lower sides of the piston, which is beneficial to When the exhaust valve is working, it reduces the rising resistance of the column piston.
  • the force exerted by the exhaust pressure on the piston should be equal to the sum of the static friction force between the piston and the exhaust valve housing and the elastic force after the telescopic structure is compressed.
  • the position of the piston when it is in the equilibrium position is different.
  • it must be considered that the compression rate of the telescopic structure when the exhaust pressure is maximum is within the allowable range of the telescopic structure used.
  • the compressor When the compressor starts to work, the high-pressure refrigerant gas does work on the piston, causing the piston to rise. Therefore, the plurality of first exhaust channels of the present invention should be arranged on the side wall that can be covered by the rising stroke of the piston.
  • the compressor The exhaust channel is connected to the main exhaust chamber outside the exhaust valve housing through the second exhaust channel, the hollow cavity and the first exhaust channel on the valve seat in sequence.
  • the refrigerant flows into the hollow cavity from the second exhaust channel, and then flows into the main exhaust chamber from the first exhaust channel to realize exhaust of the refrigerant gas.
  • the present invention can design the first exhaust channel and the second exhaust channel according to the specific structure of the compressor, including the position, number, size, etc. of the exhaust channel. .
  • the side wall 11 of the exhaust valve assembly may be provided with a plurality of first exhaust channels 111, and the plurality of first exhaust channels 111 are evenly distributed along the circumference of the side wall, Such as circumferential array distribution, etc.
  • the radial size of the plurality of first exhaust channels 111 is less than or equal to 2 mm. It should be noted that the "radial size" here refers to the distance between the two farthest points on the cross section of the first exhaust channel. distance, taking the cross-section of the first exhaust channel as a circle as an example, the radial size of the first exhaust channel is the diameter of the first exhaust channel.
  • the diameter of the first exhaust channel can be It is 2mm, 1.5mm or 1mm, etc.; in addition, the distance between the first exhaust channels 111 also affects the noise and exhaust pulsation caused by the exhaust to a certain extent. Preferably, the distance between the first exhaust channels 111 The distance between them is less than or equal to 1.5 times the radial size of the first exhaust channel.
  • the cross section of the first exhaust passage is not limited to a circle, and may be in various shapes such as an ellipse or a polygon.
  • the restoring force of the piston is mainly the elastic force accumulated after the telescopic structure is compressed, and its direction is perpendicular to the inward direction of the static plate flange; affected by gravity, the lower end surface of the piston will be in contact with the exhaust
  • the inner wall of the valve housing is in contact and needs to overcome dynamic friction during the rebound process. Therefore, it is necessary to ensure that the elastic force of the telescopic structure is greater than the friction between the piston and the inner wall of the exhaust valve housing.
  • valve seat is provided with a second exhaust channel
  • the exhaust channel of the compressor must be sealed, and the contact surface between the piston and the valve seat must have a high flatness to ensure that when the compressor stops working, the second exhaust channel Completely covered by the piston, there is no possibility of backflow of high-pressure refrigerant gas.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Rotary Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

La présente invention concerne un ensemble soupape d'échappement et un compresseur à spirale le comprenant. L'ensemble soupape d'échappement comprend : un carter de soupape d'échappement (1), comprenant une paroi latérale (11) et une chambre creuse (12), la paroi latérale (11) comportant au moins un premier passage d'échappement (111), une première extrémité (13) du carter de soupape d'échappement (1) comportant un passage de libération de gaz (15) et fermant partiellement la chambre creuse (12), et une seconde extrémité (14) pouvant être reliée à un disque statique de compresseur ; un piston (2), agencé dans la chambre creuse (12) du carter de soupape d'échappement (1), la forme du piston (2) étant adaptée à celle de la paroi interne du carter de soupape d'échappement (1) ; une structure d'extension et de rétraction (3), agencée dans la chambre creuse (12) du carter de soupape d'échappement (1), deux extrémités de la structure d'extension et de rétraction (3) étant respectivement reliées à la première extrémité (13) de la chambre creuse (12) et au piston (2), et l'extension et la rétraction de la structure d'extension et de rétraction (3) amenant le piston (2) à se déplacer dans un sens axial du carter de soupape d'échappement (1). La chambre creuse (12) du carter de soupape d'échappement (1) sert de chambre d'échappement, et les premiers passages d'échappement (111) de la paroi latérale (11) du carter de soupape d'échappement (1) servent de trous d'échappement silencieux, réduisant ainsi le bruit d'échappement et la pulsation d'échappement, et améliorant l'expérience d'utilisation d'un utilisateur.
PCT/CN2023/092704 2022-06-27 2023-05-08 Ensemble soupape d'échappement et compresseur à spirale le comprenant WO2024001523A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202210736542.XA CN115059611A (zh) 2022-06-27 2022-06-27 排气阀组件及包括其的涡旋压缩机
CN202210736542.X 2022-06-27

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Publication Number Publication Date
WO2024001523A1 true WO2024001523A1 (fr) 2024-01-04

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WO (1) WO2024001523A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115059611A (zh) * 2022-06-27 2022-09-16 上海海立新能源技术有限公司 排气阀组件及包括其的涡旋压缩机

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN200993100Y (zh) * 2006-12-30 2007-12-19 上海三电贝洱汽车空调有限公司 涡旋压缩机的单向阀
US20160201673A1 (en) * 2012-09-14 2016-07-14 Emerson Climate Technologies (Suzhou) Co., Ltd. Discharge valve and compressor comprising same
CN207278954U (zh) * 2017-10-16 2018-04-27 扬州日上真空设备有限公司 一种能够降低排气噪音的单向阀
CN209638461U (zh) * 2018-12-19 2019-11-15 苏州跃佳阀门有限公司 一种新型升降式止回阀
CN115059611A (zh) * 2022-06-27 2022-09-16 上海海立新能源技术有限公司 排气阀组件及包括其的涡旋压缩机

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN200993100Y (zh) * 2006-12-30 2007-12-19 上海三电贝洱汽车空调有限公司 涡旋压缩机的单向阀
US20160201673A1 (en) * 2012-09-14 2016-07-14 Emerson Climate Technologies (Suzhou) Co., Ltd. Discharge valve and compressor comprising same
CN207278954U (zh) * 2017-10-16 2018-04-27 扬州日上真空设备有限公司 一种能够降低排气噪音的单向阀
CN209638461U (zh) * 2018-12-19 2019-11-15 苏州跃佳阀门有限公司 一种新型升降式止回阀
CN115059611A (zh) * 2022-06-27 2022-09-16 上海海立新能源技术有限公司 排气阀组件及包括其的涡旋压缩机

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