WO2024001523A1 - Exhaust valve assembly and scroll compressor comprising same - Google Patents

Exhaust valve assembly and scroll compressor comprising same 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
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WO
WIPO (PCT)
Prior art keywords
exhaust valve
exhaust
piston
valve housing
valve assembly
Prior art date
Application number
PCT/CN2023/092704
Other languages
French (fr)
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
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Filing date
Publication date
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Publication of WO2024001523A1 publication Critical patent/WO2024001523A1/en

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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

Provided are an exhaust valve assembly and a scroll compressor comprising same. The exhaust valve assembly comprises: an exhaust valve casing (1), comprising a side wall (11) and a hollow chamber (12), wherein the side wall (11) is provided with at least one first exhaust passage (111), a first end (13) of the exhaust valve casing (1) is provided with a gas release passage (15) and partially closes the hollow chamber (12), and a second end (14) can be connected to a compressor static disk; a piston (2), arranged in the hollow chamber (12) of the exhaust valve casing (1), the shape of the piston (2) being matched with that of the inner wall of the exhaust valve casing (1); an extension and retraction structure (3), arranged in the hollow chamber (12) of the exhaust valve casing (1), two ends of the extension and retraction structure (3) being respectively connected to the first end (13) of the hollow chamber (12) and the piston (2), and extension and retraction of the extension and retraction structure (3) driving the piston (2) to move in an axial direction of the exhaust valve casing (1). The hollow chamber (12) of the exhaust valve casing (1) serves as an exhaust chamber, and the first exhaust passages (111) of the side wall (11) of the exhaust valve casing (1) serve as silencing exhaust holes, thus reducing exhaust noise and exhaust pulsation, and improving the use experience of a user.

Description

排气阀组件及包括其的涡旋压缩机Exhaust valve assembly and scroll compressor including same 技术领域Technical field
本发明涉及压缩机领域，具体地说，涉及一种排气阀组件及包括其的涡旋压缩机。The present invention relates to the field of compressors, and in particular, to an exhaust valve assembly and a scroll compressor including the same.
背景技术Background technique
车用涡旋压缩机，一般采用卧式结构。舌簧片式排气阀因其结构简单，且在停机时容易快速关闭，成为卧式涡旋压缩机排气阀的首选。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.
舌簧片式排气阀，包括舌簧片、挡板和紧固螺栓等部件。不同型号的压缩机，因其排量的不同，使用的排气阀片尺寸和形状是不同的。如不能直接借用旧有型号，则需要重新设计和充分检验，导致压缩机开发周期变长。不匹配的舌簧片式排气阀容易在实际使用时导致排气噪声大，甚至出现排气阀片断裂等失效现象。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.
现有的舌簧片式排气阀的优化工作，也只能解决排气过程中阀片颤振所带来的噪声问题，以及某一转速范围内排气噪声问题。但是，随着新能源技术的发展，更大调速范围的变频压缩机正成为主流需求。这一变化导致整个转速范围内的噪声优化难上加难。The existing optimization work of the reed exhaust valve can only solve the noise problem caused by the flutter of the valve plate during the exhaust process, as well as the exhaust noise problem within a certain speed range. However, with the development of new energy technology, variable frequency compressors with a larger speed range are becoming mainstream demand. This change makes it more difficult to optimize noise throughout the entire speed range.
另外，随着新能源技术的发展，客户对排气脉动也提出了越来越高的要求，而舌簧片式结构的排气阀在欠压缩工况中非常容易导致排气脉动和噪声变大的问题。In addition, with the development of new energy technology, customers have also put forward higher and higher requirements for exhaust pulsation, and the reed-type exhaust valve can easily cause exhaust pulsation and noise changes in under-compression conditions. Big question.
专利CN114263592A针对上述问题设计了一种由阀片和挡板组成的排气阀组件，阀片主要由固定部、运动部和头部组成，挡板主要由固定安装段、过渡连接段和升程限位段等组成。过渡连接段和升程限位段的纵剖面均为圆弧形，半径分别为R1和R2，且R2>R1。阀片设计为由固定部向头部方向阶梯式递增。通过对阀片圆弧形结构和挡板宽度的改进设计，在不改变升程的情况下，阀片在升程过程中的振荡明显减小，阀片头部随着曲轴旋转角度更为平滑，阀片触碰挡板后的弹性回复力得到保持，有助 于阀片及时关闭，提高对现有的压缩机排气噪音的降噪效果和提升压缩机性能。该专利虽针对现有舌簧片式排气阀进行了优化设计，但其仅针对舌簧片振荡产生的噪音进行了改善，未能解决高压制冷剂在排气过程中产生的噪音，也没有对排气脉动进行任何改善。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. By improving the design of the arc-shaped structure of the valve plate and the width of the baffle, without changing the lift, the oscillation of the valve plate during the lift process is significantly reduced, and the valve plate head rotates at a smoother angle with the crankshaft. , the elastic restoring force of the valve plate after contacting the baffle is maintained, which helps The valve plate is closed in time to improve the noise reduction effect on the existing compressor exhaust noise and improve the compressor performance. Although this patent optimizes the design of the existing reed type exhaust valve, it only improves the noise generated by the oscillation of the reed, and fails to solve the noise generated by the high-pressure refrigerant during the exhaust process. Any improvements to exhaust pulsation.
需要说明的是，在上述背景技术部分公开的信息仅用于加强对本发明的背景的理解，因此可以包括不构成对本领域普通技术人员已知的现有技术的信息。It should be noted that the information disclosed in the above background section is only used to enhance understanding of the background of the present invention, and therefore may include information that does not constitute prior art known to those of ordinary skill in the art.
发明内容Contents of the invention
针对现有技术中的问题，本发明的目的在于提供一种排气阀组件及包括其的涡旋压缩机，该排气阀组件本为一种新颖的活塞式排气阀组件，通过其排气阀壳体的中空腔体作为排气腔，排气阀壳体的侧壁的排气通道作为消声排气孔，从而改善排气噪声和排气脉动，提高用户的使用体验。In view of the problems in the prior art, 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.
本发明的第一方面提供了一种排气阀组件，包括：A first aspect of the invention provides an exhaust valve assembly, including:
排气阀壳体，包括侧壁和中空腔体，所述侧壁设置有至少一第一排气通道，所述至少一第一排气通道连通所述中空腔体与所述排气阀壳体外部，所述排气阀壳体的第一端设置有泄气通道且部分封闭中空腔体，第二端可与压缩机静盘连接；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. Outside the body, 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;
活塞，设置于所述排气阀壳体的中空腔体内，且所述活塞的形状与所述排气阀壳体的内壁相匹配；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;
伸缩结构，设置于所述排气阀壳体的中空腔体内，所述伸缩结构的两端分别连接中空腔体的第一端和所述活塞，所述伸缩结构的伸缩带动所述活塞在所述排气阀壳体的轴向方向移动。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.
根据本发明的第一方面，所述排气阀组件还包括：According to the first aspect of the invention, the exhaust valve assembly further includes:
导向连杆，所述导向连杆的一端固定于所述排气阀壳体的中空腔体的第一端；A guide connecting rod, one end of which is fixed to the first end of the hollow cavity of the exhaust valve housing;
所述活塞和所述伸缩结构套设于所述导向连杆，且所述伸缩结构可沿所述导向连杆的轴向方向伸缩，以及所述活塞可沿所述导向连杆的轴向方向移动。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.
根据本发明的第一方面，所述排气阀组件还包括阀座，固定于所述排 气阀壳体的第二端的内壁，且与所述导向连杆的另一端相连接；According to a first aspect of the present invention, 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;
所述阀座设置有至少一第二排气通道，所述至少一第二排气通道连通所述中空腔体与所述排气阀壳体外部。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.
根据本发明的第一方面，所述阀座与所述侧壁是一体件。According to a first aspect of the invention, the valve seat and the side wall are one piece.
根据本发明的第一方面，所述侧壁设置有多个所述第一排气通道，且多个所述第一排气通道沿所述侧壁的周向均匀公布。According to a first aspect of the present invention, 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.
根据本发明的第一方面，所述侧壁设置有多个所述第一排气通道，多个所述第一排气通道满足：According to a first aspect of the present invention, the side wall is provided with a plurality of first exhaust channels, and the plurality of first exhaust channels satisfy:
所述第一排气通道的径向尺寸小于等于2mm；和/或The radial size of the first exhaust channel is less than or equal to 2mm; and/or
所述第一排气通道之间的距离小于等于所述第一排气通道的径向尺寸的1.5倍。The distance between the first exhaust channels is less than or equal to 1.5 times the radial size of the first exhaust channels.
根据本发明的第一方面，所述伸缩结构为一弹簧。According to a first aspect of the present invention, the telescopic structure is a spring.
根据本发明的第一方面，所述活塞设置有第一通孔，通过所述第一通孔与所述导向连杆的间隙配合套设于所述导向连杆。According to a first aspect of the present invention, 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.
根据本发明的第一方面，所述排气阀壳体的第一端朝向中空腔体的一侧设置有沉孔，所述导向连杆与所述排气阀壳体的第一端通过所述沉孔与所述导向连杆一端的过盈配合连接。According to the first aspect of the present invention, 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.
根据本发明的第一方面，所述排气阀壳体的第二端处的侧壁设置有螺纹，通过所述螺纹与压缩机静盘固定连接。According to a first aspect of the present invention, 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.
本发明的第二方面提供了涡旋压缩机，包括所述排气阀组件。A second aspect of the invention provides a scroll compressor including the exhaust valve assembly.
本发明提供了一种新颖的活塞式排气阀组件，通过其排气阀壳体的中空腔体作为排气腔，排气阀壳体的侧壁的排气通道作为消声排气孔，从而改善排气噪声和排气脉动，提高用户的使用体验；同时，活塞式排气阀组件可离线安装，更适合自动化生产，排气通道、活塞对称式设计，无安装方向性要求；进一步的，与传统舌簧片式排气阀相比，排气阀组件与压缩机静盘之间可通过螺纹直接连接，无方向性要求，容错率高，降低制造成本。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. Thereby improving the exhaust noise and exhaust pulsation, and improving the user experience; at the same time, 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.
附图说明Description of drawings
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本 申请的实施例，并与说明书一起用于解释本申请的原理，通过阅读参照以下附图对非限制性实施例所作的详细描述，本发明的其它特征、目的和优点将会变得更明显。显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。此外，附图仅为本公开的示意性图解，并非一定是按比例绘制。图中相同的附图标记表示相同或类似的部分，因而将省略对它们的重复描述。附图中所示的一些方框图是功能实体，不一定必须与物理或逻辑上独立的实体相对应。The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate the The embodiments of the application, and together with the description serve to explain the principles of the application, other features, objects and advantages of the invention will become more apparent by reading the detailed description of the non-limiting embodiments with reference to the following drawings. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without exerting creative efforts. Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings represent the same or similar parts, and thus their repeated description will be omitted. Some of the block diagrams shown in the figures are functional entities and do not necessarily correspond to physically or logically separate entities.
图1为本发明的一实施例的排气阀组件的结构示意图；Figure 1 is a schematic structural diagram of an exhaust valve assembly according to an embodiment of the present invention;
图2为本发明的一实施例的排气阀壳体的结构示意图；Figure 2 is a schematic structural diagram of an exhaust valve housing according to an embodiment of the present invention;
图3为本发明的一实施例的活塞的结构示意图；Figure 3 is a schematic structural diagram of a piston according to an embodiment of the present invention;
图4为本发明的一实施例的导向连杆的结构示意图；Figure 4 is a schematic structural diagram of a guide link according to an embodiment of the present invention;
图5为本发明的一实施例的阀座的结构示意图；Figure 5 is a schematic structural diagram of a valve seat according to an embodiment of the present invention;
图6为本发明的一实施例的排气阀组件排气时的状态图。FIG. 6 is a state diagram of the exhaust valve assembly during exhaust according to an embodiment of the present invention.
具体实施方式Detailed ways
现在将参考附图更全面地描述示例实施方式。然而，示例实施方式能够以多种形式实施，且不应被理解为限于在此阐述的范例；相反，提供这些实施方式使得本公开将更加全面和完整，并将示例实施方式的构思全面地传达给本领域的技术人员。所描述的特征、结构或特性可以以任何合适的方式结合在一个或更多实施方式中。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.
在本说明书的表示中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的表示意指结合该实施例或示例表示的具体特征、结构、材料或者特点包括于本说明书的至少一个实施例或示例中。而且，表示的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。此外，在不相互矛盾的情况下，本领域的技术人员可以将本说明书中表示的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。In this specification, reference to the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like is intended to be in conjunction with the specific features of the embodiment or example represented. , structures, materials or features are included in at least one embodiment or example of this specification. Furthermore, the specific features, structures, materials, or characteristics shown may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art may combine and combine the different embodiments or examples represented in this specification and the features of the different embodiments or examples unless they are inconsistent with each other.
在通篇说明书中，当说某器件与另一器件“连接”时，这不仅包括“直 接连接”的情形，也包括在其中间把其它元件置于其间而“间接连接”的情形。表示“下”、“上”等相对空间的术语可以为了更容易地说明在附图中图示的一器件相对于另一器件的关系而使用。这种术语是指，不仅是在附图中所指的意义，还包括使用中的装置的其它意义或作业。例如，如果翻转附图中的装置，曾说明为在其它器件“下”的某器件则说明为在其它器件“上”。因此，所谓“下”的示例性术语，全部包括上与下方。装置可以旋转90°或其它角度，代表相对空间的术语也据此来解释。Throughout this specification, when a device is said to be "connected" to another device, this includes more than just "direct The situation of "direct connection" also includes the situation of "indirect connection" by placing other elements in between. Terms indicating relative spaces such as "lower" and "upper" may be illustrated in the drawings for easier explanation. The relationship of one device to another device is used. Such terms refer not only to the meaning indicated in the figures, but also to other meanings or operations of the device in use. For example, if a device in the figures is turned over, Devices that are described as "below" other devices are then described as "above" other devices. Therefore, illustrative terms for "below" are all intended to include both above and below. Devices may be rotated 90° or at other angles. Terms representing relative space are also interpreted accordingly.
虽然在一些实例中术语第一、第二等在本文中用来表示各种元件，但是这些元件不应当被这些术语限制。这些术语仅用来将一个元件与另一个元件进行区分。例如，第一接口及第二接口等表示。再者，如同在本文中所使用的，单数形式“一”、“一个”和“该”旨在也包括复数形式，除非上下文中有相反的指示。应当进一步理解，术语“包含”、“包括”表明存在所述的特征、步骤、操作、元件、组件、项目、种类、和/或组，但不排除一个或多个其他特征、步骤、操作、元件、组件、项目、种类、和/或组的存在、出现或添加。此处使用的术语“或”和“和/或”被解释为包括性的，或意味着任一个或任何组合。因此，“A、B或C”或者“A、B和/或C”意味着“以下任一个：A；B；C；A和B；A和C；B和C；A、B和C”。仅当元件、功能、步骤或操作的组合在某些方式下内在地互相排斥时，才会出现该定义的例外。Although in some instances the terms 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. For example, the first interface and the second interface are represented. Furthermore, as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context indicates otherwise. It should be further understood that 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 terms "or" and "and/or" as used herein are to be construed as inclusive or to mean any one or any combination. Therefore, "A, B or C" or "A, B and/or C" means "any of the following: A; B; C; A and B; A and C; B and C; A, B and C" . Exceptions to this definition occur only when the combination of elements, functions, steps, or operations is inherently mutually exclusive in some manner.
虽然未不同地定义，但包括此处使用的技术术语及科学术语，所有术语均具有与本说明书所属技术领域的技术人员一般理解的意义相同的意义。普通使用的字典中定义的术语追加解释为具有与相关技术文献和当前提示的内容相符的意义，只要未进行定义，不得过度解释为理想的或非常公式性的意义。Although not differently defined, all terms including technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this specification belongs. Terms defined in commonly used dictionaries are additionally interpreted to have meanings that are consistent with the content of relevant technical documents and current prompts. As long as they are not defined, they shall not be overly interpreted to have ideal or very formulaic meanings.
针对现有技术中的问题，本发明提供了一种活塞式排气阀组件，该排气阀组件包括：排气阀壳体，包括侧壁和中空腔体，所述侧壁设置有至少一第一排气通道，所述至少一第一排气通道连通所述中空腔体与所述排气阀壳体外部，所述排气阀壳体的第一端设置有泄气通道且部分封闭中空腔体，第二端可与压缩机静盘连接；活塞，设置于所述排气阀壳体的中空腔体内，且所述活塞的形状与所述排气阀壳体的内壁相匹配；伸缩结构，设 置于所述排气阀壳体的中空腔体内，所述伸缩结构的两端分别连接中空腔体的第一端和所述活塞，所述伸缩结构的伸缩带动所述活塞在所述排气阀壳体的轴向方向移动。In order to solve the problems in the prior art, the present invention provides a piston exhaust valve assembly. 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.
本发明提供了一种新颖的活塞式排气阀组件，通过其排气阀壳体的中空腔体作为排气腔，排气阀壳体的侧壁的排气通道作为消声排气孔，从而改善排气噪声和排气脉动，提高用户的使用体验；同时，活塞式排气阀组件可离线安装，更适合自动化生产，排气通道、活塞对称式设计，无安装方向性要求；进一步的，与传统舌簧片式排气阀相比，排气阀组件与压缩机静盘之间可通过螺纹直接连接，无方向性要求，容错率高，降低制造成本。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. Thereby improving the exhaust noise and exhaust pulsation, and improving the user experience; at the same time, 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.
下面结合附图以及具体的实施例进一步阐述本发明的排气阀组件的结构和使用方法，可以理解的是，各个具体实施例不作为本发明的保护范围的限制。The structure and use method of the exhaust valve assembly of the present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that each specific embodiment does not limit the scope of the present invention.
图1为本发明的一实施例的排气阀组件的结构示意图，可以看出，排气阀组件包括排气阀壳体1、活塞2、伸缩结构3、导向连杆4和阀座5。Figure 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.
图2为本发明的一实施例的排气阀壳体的结构示意图，具体地，排气阀壳体1包括侧壁11和中空腔体12，所述侧壁1设置有多个第一排气通道111，所述第一排气通道111连通所述中空腔体12与所述排气阀壳体1外部，所述排气阀壳体1的第一端13设置有泄气通道15且部分封闭中空腔体12，第二端14可与压缩机静盘连接；排气阀壳体1可以呈圆柱状，即侧壁11和第一端13构成圆筒状，相应地，中空腔体12也为圆柱状。优选地，圆筒状的侧壁11的轴线可以与圆柱状的中空腔体12的轴线重合，本发明对排气阀壳体1和中空腔体12的形状不做限制，可以根据压缩机的具体结构确定。Figure 2 is a schematic structural diagram of an exhaust valve housing according to an embodiment of the present invention. Specifically, 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. Correspondingly, the hollow cavity 12 Also cylindrical. Preferably, 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.
图3为图2实施例的活塞的结构示意图，活塞2设置于所述排气阀壳体1的中空腔体12内。伸缩结构3设置于所述排气阀壳体1的中空腔体12内，所述伸缩结构3的两端分别连接中空腔体12的第一端13和所述活塞2，伸缩结构3的一端固定与第一端13，此时，所述伸缩结构3的伸缩带动所述活塞1在所述排气阀壳体的轴向方向(图1的z方向)移动。由于活塞2需在中空腔体12沿着圆柱状的轴线方向，因此，所述活塞2 的形状与所述排气阀壳体1的内壁相匹配，当中空腔体12为圆柱状时，活塞如图2所示为柱式活塞，活塞的外径略小于中空腔体12的直径(排气阀壳体的内径)。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. When the hollow cavity 12 is cylindrical, 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).
在一些实施例中，排气阀组件仅包括排气阀壳体1、活塞2和伸缩结构3部件时，如要确保活塞在壳体内正常运动活塞，活塞需具有一定的厚度，以起到活塞移动时的导向作用，本发明对活塞的厚度不做限定，起到一定的限位作用即可。在实际的使用中，伸缩结构3可以是弹簧、橡胶弹性材料、管道伸缩器等，可以驱动活塞2在中空腔体12内往复运动的伸缩机构均可用于本发明。In some embodiments, 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. For the guiding function during movement, the present invention does not limit the thickness of the piston, as long as it plays a certain limiting role. In actual use, 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.
所述排气阀壳体1的第二端14处的侧壁11设置有螺纹112，当排气阀组件使用于一压缩机时，可以通过所述螺纹112与压缩机静盘固定连接，如与静盘处的法兰固定连接，此时，螺纹112与法兰的螺纹相齿和。排气阀壳体也可以以过盈配合的方式与压缩机静盘法兰固定连接，以实现排气阀壳体的中空腔体12与压缩机排气通道的相连通。本发明的排气阀组件可以先安装完后再组装到压缩机上，简化了生产工艺流程。The side wall 11 at the second end 14 of the exhaust valve housing 1 is provided with threads 112. 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.
图1的实施例中，排气阀组件还可以包括导向连杆4。图4为该实施例的导向连杆的结构示意图，导向连杆4为一圆柱光杆，所述导向连杆4的一端固定于所述排气阀壳体的中空腔体12的第一端13，在一实施例中，可以在所述排气阀壳体1的第一端13朝向中空腔体12的一侧设置有沉孔，所述导向连杆4与所述排气阀壳体的第一端13通过沉孔与所述导向连杆4一端的过盈配合连接。所述活塞2和所述伸缩结构3套设于所述导向连杆4，在一些实施例中，可以通过在所述活塞2中央设置第一通孔21，通过所述第一通孔21与所述导向连杆4的间隙配合套设于所述导向连杆4。同样的，伸缩结构3也可以通过设置通孔与所述导向连杆4的间隙配合，实现所述伸缩结构3可沿所述导向连杆4的轴向方向伸缩，以及所述活塞可沿所述导向连杆4的轴向方向移动。导向连杆4的主要作用是限制伸缩结构和活塞的径向移动，其外径要略小于伸缩结构的通孔和活塞的第一通孔的内径，导向连杆4使得伸缩结构3只能沿导向连杆4的轴向上进行压缩和伸长，避免伸缩结构压缩、恢复等过程中产生偏移，从而影响活塞在中空腔体内的移动。 In the embodiment of FIG. 1 , 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. , in one embodiment, 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. In some embodiments, a first through hole 21 can be provided in the center of the piston 2. Through the first through hole 21 and The guide connecting rod 4 is sleeved on the guide connecting rod 4 with a clearance fit. Similarly, 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.
进一步的，排气阀组件还可以包括阀座5，图5为图1实施例的阀座的结构示意图，阀座5固定于所述排气阀壳体1的第二端14的内壁，阀座5可以是过盈配合的方式嵌入排气阀壳体1内，也可以与所述侧壁是一体件。同时，阀座5与所述导向连杆4的另一端相连接，即可以通过阀座5进一步地固定导向连杆4，两者的固定连接方式不限，如可以通过阀座的中心通孔与导向连杆4的另一端的过盈配合连接。所述阀座5设置有至少一第二排气通道51，所述至少一第二排气通道51连通所述中空腔体12与所述排气阀壳体1外部。Further, 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. At the same time, 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 .
本发明还提供了一种包括上述排气阀组件的涡旋压缩机，涡旋压缩机可以是卧式的，也可以是立式的。下面通过排气阀组件的工作原理进一步说明其结构和各个部件的基本参数，图6为本发明的一实施例的排气阀组件排气时的状态图。具体地：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:
当压缩机开始排气时，压缩机排气压力对活塞的作用力使活塞向远离静盘的方向移动，同时克服活塞的下端面与排气阀壳体的内侧壁接触产生的动摩擦力和伸缩结构被压缩的产生的弹力，排气阀壳体的第一端设置的泄气通道，将排气阀壳体内和排气阀壳体外部连通，保证活塞上下两侧不存在压差力，有利于排气阀在工作时，减小柱式活塞上升的阻力。在达到平衡时，排气压力对活塞的作用力应等于活塞和排气阀壳体之间的静摩擦力与伸缩结构被压缩后的弹力之和。同理，因为在不同工况下，压缩机的排气压力是不一样的，因此，活塞处于平衡位置时的位置是不一样的，为了保证伸缩结构被压缩到极限时伸缩结构不会失效，因此，在进行伸缩结构选用或设计时要考虑排气压力最大时伸缩结构的压缩率在所用伸缩结构允许的范围内。When the compressor starts to exhaust, 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. When equilibrium is reached, 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. In the same way, because the exhaust pressure of the compressor is different under different working conditions, the position of the piston when it is in the equilibrium position is different. In order to ensure that the telescopic structure will not fail when it is compressed to the limit, Therefore, when selecting or designing a telescopic structure, 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.
当压缩机开始工作时，高压制冷剂气体对活塞做功，使活塞上升，因此，本发明的多个第一排气通道应设置于活塞上升的行程能够覆盖的侧壁上，此时，压缩机排气通道依次通过阀座上的第二排气通道、中空腔体以及第一排气通道与排气阀壳体外的主排气腔相连通。排气时，制冷剂从第二排气通道流入中空腔体，再从第一排气通道流入到主排气腔，实现制冷剂气体的排气。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. At this time, 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. When exhausting, 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.
由于排气时高压制冷剂气体依次从第一排气通道和第二排气通道通 过，当活塞受到排气压力的作用向上运动时，确保活塞上升的距离可以使设置于侧壁原理第二端的第一排气通道与压缩机排气通道1通，确保每个通道都有制冷剂流出可有效地降低排气带来的噪声和排气脉动，本发明可以结构压缩机的具体结构设计第一排气通道和第二排气通道，包括排气通道的位置、数量、尺寸等。在一些实施例中，排气阀组件的侧壁11可以设置有多个所述第一排气通道111，且多个所述第一排气通道111沿所述侧壁的周向均匀公布，如周向阵列分布等。优选地，多个所述第一排气通道111的径向尺寸小于等于2mm，需要说明的是，此处的“径向尺寸”是指第一排气通道的横截面上最远两点间的距离，以第一排气通道的横截面为圆形为例，第一排气通道的径向尺寸即第一排气通道的直径，此时，优选地，第一排气通道的直径可以为2mm、1.5mm或1mm等；另外，所述第一排气通道111之间的距离也一定程度影响排气带来的噪声和排气脉动，优选地，所述第一排气通道111之间的距离小于等于所述第一排气通道的径向尺寸的1.5倍。第一排气通道的横截面不限于圆形，可以是椭圆形、多边形等各种形状。Since the high-pressure refrigerant gas flows through the first exhaust channel and the second exhaust channel in sequence during exhaust, However, when the piston moves upward due to the exhaust pressure, ensure that the piston rises far enough to allow the first exhaust channel set at the second end of the side wall principle to communicate with the compressor exhaust channel 1, ensuring that each channel has refrigeration Agent outflow can effectively reduce the noise and exhaust pulsation caused by the exhaust. 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. . In some embodiments, 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. Preferably, 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. At this time, preferably, 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.
当压缩机排气停止时，此时的状态图见图1，活塞恢复力主要是伸缩结构被压缩后积蓄的弹力，其方向垂直于静盘法兰面向里；受重力影响，活塞下端面会与排气阀壳体的内侧壁接触，在回弹的过程中需克服动摩擦力，因此要保证伸缩结构的弹力大于活塞与排气阀壳体内侧壁的摩擦力。当活塞盖住第一排气通道或下降至第一排气通道以下时，要保证伸缩结构仍处于被压缩状态，以确保压缩机的排气通道被完全密封。由于阀座设置有第二排气通道，要密封压缩机的排气通道，活塞与阀座的接触面要做具有较高的平整度，以保证当压缩机停止工作时，第二排气通道被活塞完全盖住，不存在高压制冷剂气体回流的可能性。When the exhaust of the compressor stops, the state diagram at this time is shown in Figure 1. 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. When the piston covers the first exhaust channel or drops below the first exhaust channel, ensure that the telescopic structure is still in a compressed state to ensure that the exhaust channel of the compressor is completely sealed. Since the 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.
以上内容是结合具体的优选实施方式对本发明所作的进一步详细说明，不能认定本发明的具体实施只局限于这些说明。对于本领域技术人员而言，显然本申请不限于上述示范性实施例的细节，而且在不背离本申请的精神或基本特征的情况下，能够以其他的具体形式实现本申请。因此，无论从哪一点来看，均应将实施例看作是示范性的，而且是非限制性的， 本申请的范围由所附权利要求而不是上述说明限定，因此旨在将落在权利要求的等同要件的含义和范围内的所有变化涵括在本申请内。不应将权利要求中的任何附图标记视为限制所涉及的权利要求。 The above content is a further detailed description of the present invention in combination with specific preferred embodiments, and it cannot be concluded that the specific implementation of the present invention is limited to these descriptions. It is obvious to those skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, and that the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as illustrative and non-restrictive from any point of view. The scope of the present application is defined by the appended claims rather than the above description, and therefore all changes that fall within the meaning and range of equivalent elements of the claims are intended to be embraced therein. Any reference signs in the claims shall not be construed as limiting the claim in question.

Claims (11)

  1. 一种排气阀组件，其特征在于，包括：An exhaust valve assembly, characterized by including:
    排气阀壳体，包括侧壁和中空腔体，所述侧壁设置有至少一第一排气通道，所述至少一第一排气通道连通所述中空腔体与所述排气阀壳体外部，所述排气阀壳体的第一端设置有泄气通道且部分封闭中空腔体，第二端可与压缩机静盘连接；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. Outside the body, 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;
    活塞，设置于所述排气阀壳体的中空腔体内，且所述活塞的形状与所述排气阀壳体的内壁相匹配；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;
    伸缩结构，设置于所述排气阀壳体的中空腔体内，所述伸缩结构的两端分别连接中空腔体的第一端和所述活塞，所述伸缩结构的伸缩带动所述活塞在所述排气阀壳体的轴向方向移动。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.
  2. 根据权利要求1所述的排气阀组件，其特征在于，还包括：The exhaust valve assembly according to claim 1, further comprising:
    导向连杆，所述导向连杆的一端固定于所述排气阀壳体的中空腔体的第一端；A guide connecting rod, one end of which is fixed to the first end of the hollow cavity of the exhaust valve housing;
    所述活塞和所述伸缩结构套设于所述导向连杆，且所述伸缩结构可沿所述导向连杆的轴向方向伸缩，以及所述活塞可沿所述导向连杆的轴向方向移动。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.
  3. 根据权利要求2所述的排气阀组件，其特征在于，还包括阀座，固定于所述排气阀壳体的第二端的内壁，且与所述导向连杆的另一端相连接；The exhaust valve assembly according to claim 2, further comprising a valve seat fixed to the inner wall of the second end of the exhaust valve housing and connected to the other end of the guide connecting rod;
    所述阀座设置有至少一第二排气通道，所述至少一第二排气通道连通所述中空腔体与所述排气阀壳体外部。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.
  4. 根据权利要求3所述的排气阀组件，其特征在于，所述阀座与所述侧壁是一体件。The exhaust valve assembly according to claim 3, wherein the valve seat and the side wall are one piece.
  5. 根据权利要求1所述的排气阀组件，其特征在于，所述侧壁设置有多个所述第一排气通道，且多个所述第一排气通道沿所述侧壁的周向均匀公布。The exhaust valve assembly according to claim 1, wherein the side wall is provided with a plurality of first exhaust channels, and the plurality of first exhaust channels are along the circumferential direction of the side wall. Publish evenly.
  6. 根据权利要求1所述的排气阀组件，其特征在于，所述侧壁设置有多个所述第一排气通道，多个所述第一排气通道满足： The exhaust valve assembly according to claim 1, wherein the side wall is provided with a plurality of first exhaust channels, and the plurality of first exhaust channels satisfy:
    所述第一排气通道的径向尺寸小于等于2mm；和/或The radial size of the first exhaust channel is less than or equal to 2mm; and/or
    所述第一排气通道之间的距离小于等于所述第一排气通道的径向尺寸的1.5倍。The distance between the first exhaust channels is less than or equal to 1.5 times the radial size of the first exhaust channels.
  7. 根据权利要求1所述的排气阀组件，其特征在于，所述伸缩结构为一弹簧。The exhaust valve assembly according to claim 1, wherein the telescopic structure is a spring.
  8. 根据权利要求2所述的排气阀组件，其特征在于，所述活塞设置有第一通孔，通过所述第一通孔与所述导向连杆的间隙配合套设于所述导向连杆。The exhaust valve assembly according to claim 2, wherein the piston is provided with a first through hole, and is sleeved on the guide connecting rod through a clearance fit between the first through hole and the guide connecting rod. .
  9. 根据权利要求2所述的排气阀组件，其特征在于，所述排气阀壳体的第一端朝向中空腔体的一侧设置有沉孔，所述导向连杆与所述排气阀壳体的第一端通过所述沉孔与所述导向连杆一端的过盈配合连接。The exhaust valve assembly according to claim 2, characterized in that 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 exhaust valve The first end of the housing is connected with an interference fit between the counterbore and one end of the guide connecting rod.
  10. 根据权利要求1所述的排气阀组件，其特征在于，所述排气阀壳体的第二端处的侧壁设置有螺纹，通过所述螺纹与压缩机静盘固定连接。The exhaust valve assembly according to claim 1, wherein 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.
  11. 一种涡旋压缩机，其特征在于，包括如权利要求1至10中任意一项所述的排气阀组件。 A scroll compressor, characterized by comprising the exhaust valve assembly according to any one of claims 1 to 10.
PCT/CN2023/092704 2022-06-27 2023-05-08 Exhaust valve assembly and scroll compressor comprising same WO2024001523A1 (en)

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CN115059611A (en) * 2022-06-27 2022-09-16 上海海立新能源技术有限公司 Discharge valve subassembly reaches scroll compressor including it

Citations (5)

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CN200993100Y (en) * 2006-12-30 2007-12-19 上海三电贝洱汽车空调有限公司 Non-return valve for scroll compressor
US20160201673A1 (en) * 2012-09-14 2016-07-14 Emerson Climate Technologies (Suzhou) Co., Ltd. Discharge valve and compressor comprising same
CN207278954U (en) * 2017-10-16 2018-04-27 扬州日上真空设备有限公司 A kind of check valve that can reduce exhaust noise
CN209638461U (en) * 2018-12-19 2019-11-15 苏州跃佳阀门有限公司 A kind of lifting/lowering type check-valves
CN115059611A (en) * 2022-06-27 2022-09-16 上海海立新能源技术有限公司 Discharge valve subassembly reaches scroll compressor including it

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN200993100Y (en) * 2006-12-30 2007-12-19 上海三电贝洱汽车空调有限公司 Non-return valve for scroll compressor
US20160201673A1 (en) * 2012-09-14 2016-07-14 Emerson Climate Technologies (Suzhou) Co., Ltd. Discharge valve and compressor comprising same
CN207278954U (en) * 2017-10-16 2018-04-27 扬州日上真空设备有限公司 A kind of check valve that can reduce exhaust noise
CN209638461U (en) * 2018-12-19 2019-11-15 苏州跃佳阀门有限公司 A kind of lifting/lowering type check-valves
CN115059611A (en) * 2022-06-27 2022-09-16 上海海立新能源技术有限公司 Discharge valve subassembly reaches scroll compressor including it

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