WO2020108232A1 - 涡旋压缩机及用于涡旋压缩机的静涡旋部件的定位方法 - Google Patents

涡旋压缩机及用于涡旋压缩机的静涡旋部件的定位方法 Download PDF

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Publication number
WO2020108232A1
WO2020108232A1 PCT/CN2019/115285 CN2019115285W WO2020108232A1 WO 2020108232 A1 WO2020108232 A1 WO 2020108232A1 CN 2019115285 W CN2019115285 W CN 2019115285W WO 2020108232 A1 WO2020108232 A1 WO 2020108232A1
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WO
WIPO (PCT)
Prior art keywords
scroll
groove
main bearing
scroll compressor
fixed scroll
Prior art date
Application number
PCT/CN2019/115285
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English (en)
French (fr)
Inventor
黄幼玲
束宏飞
Original Assignee
艾默生环境优化技术(苏州)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
Priority claimed from CN201811443474.8A external-priority patent/CN111237188B/zh
Priority claimed from CN201822005773.5U external-priority patent/CN209164082U/zh
Application filed by 艾默生环境优化技术(苏州)有限公司 filed Critical 艾默生环境优化技术(苏州)有限公司
Publication of WO2020108232A1 publication Critical patent/WO2020108232A1/zh

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    • 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
    • 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

Definitions

  • the present disclosure relates to a scroll compressor, and more particularly, to a scroll compressor having a positioning device disposed between a fixed scroll component and a main bearing housing, a housing, or a fixed member.
  • the present disclosure also relates to a positioning method for a fixed scroll component of a scroll compressor.
  • Scroll compressors generally include a casing, a driving mechanism housed in the casing, a compression mechanism driven by the driving mechanism, a main bearing housing supporting the compression mechanism, and the like.
  • the compression mechanism generally includes a movable scroll member and a stationary scroll member that mesh with each other.
  • the fixed scroll member needs to be fixed in the circumferential direction relative to the main bearing housing to prevent the fixed scroll member from rotating around its axis.
  • the fixed scroll component needs to be able to move slightly axially along its axis, so as to provide a certain axial flexibility for the scroll compressor.
  • a common positioning method for the fixed scroll component in the prior art is that a lug is provided on the outer periphery of the fixed scroll component, a through hole is formed in the lug, and a thread is formed in the arm portion of the main bearing housing Hole, through the bolt with guide sleeve to fix the fixed scroll component and the main bearing seat together. Since the through hole formed in the lug of the fixed scroll component can slide axially on the guide sleeve, the fixed scroll component is allowed to move slightly axially relative to the main bearing housing. In addition, the bolt prevents movement in the circumferential direction between the fixed scroll member and the main bearing housing.
  • a guide ring may be provided on the outer periphery of the fixed scroll component, a through hole is provided in the guide ring, and bolts are used to pass through the guide ring And through the threaded hole in the main bearing seat.
  • the guide ring allows axial movement of the static scroll component.
  • an additional groove may be provided on the fixed scroll member, and a positioning pin fixed to the main bearing housing and fitted in the additional groove provided on the fixed scroll member may be used to prevent the fixed scroll member from rotating about its axis .
  • the radial centering and axial limit of the fixed scroll component are achieved by the transmission of multiple components (for example, in the first positioning method, the fixed scroll component needs to be guided by Radial centering of the bushing and bolt, and in the second positioning method, the static scroll component needs to be guided by the guide ring to achieve radial centering), which increases the accuracy requirements of the relevant fitting dimensions and thus increases the processing cost .
  • the axial movement range of the fixed scroll component is limited by the bottom surface of the bolt cap and the bottom surface of the guide ring, respectively, which makes the reliability of the limitation of the axial movement range to be improved.
  • the purpose of the present disclosure is to solve or at least mitigate at least one of the above-mentioned problems, namely to provide a scroll compressor and a method for positioning a static scroll component of a scroll compressor, the scroll compressor and
  • the scroll compressor assembled by the positioning method can realize the radial centering of the fixed scroll component, allow the fixed scroll component to move axially relative to the main bearing housing, and prevent the fixed scroll component from rotating relative to the main bearing housing.
  • a scroll compressor having a positioning device includes a housing, a compression mechanism, and a main bearing housing.
  • the compression mechanism includes a static scroll component and a static scroll component. It includes a base plate and an outer peripheral wall extending downward from the base plate, the outer peripheral wall of the fixed scroll member is provided on the outer periphery of the scroll of the fixed scroll member, the main bearing housing is adapted to support the compression mechanism, wherein, at the inner peripheral wall of the housing , One of the circumferential ring groove and the protrusion is formed at the inner peripheral surface of the main bearing housing or at the inner peripheral surface of the fixing member fixedly connected to the housing and/or the main bearing housing, and is in the static vortex The other of the circumferential ring groove and the protrusion is provided at the outer peripheral wall of the component, and the protrusion is axially clearance fit in the circumferential ring groove.
  • the main bearing housing has a body portion, at least one arm portion extending axially upward from the body portion, and at least one fitting groove adjacent to the arm portion, a circumferential ring groove is formed at the inner circumferential surface of the arm portion, the circumferential ring groove Communicate with the assembly groove.
  • the stationary scroll member is integrally formed with a protrusion.
  • the circumferential width of the protrusion is smaller than the circumferential width of the fitting groove, and/or the number of protrusions corresponds to the number of fitting grooves.
  • the scroll compressor includes a muffler cover, an anti-rotation key is formed at one of a lower surface of the muffler cover and an upper surface of the base plate of the fixed scroll component, and the other is formed Groove.
  • a positioning hole is formed on the top surface of the arm portion of the main bearing housing, and the positioning hole communicates with the circumferential ring groove.
  • An anti-rotation pin is provided in the positioning hole, and a part of the anti-rotation pin passes through the positioning hole and enters the circumferential ring groove.
  • an anti-rotation groove is formed at the protrusion, and when the assembly is completed, a part of the anti-rotation pin passes through the positioning hole and fits in the anti-rotation groove.
  • the anti-rotation groove is configured to accommodate the anti-rotation pin in the radially outer portion of the anti-rotation groove and the key of the cross slip ring of the scroll compressor in the radially inner portion of the anti-rotation groove.
  • a snap ring connected to the fixed scroll member is provided, and a part of the snap ring protrudes from the outer peripheral wall of the fixed scroll member in the radial direction to serve as a protrusion.
  • the snap ring is formed into a circular ring shape with an opening.
  • a step surface is formed at the outer peripheral wall of the fixed scroll component, and the elastic retaining ring is provided above the step surface.
  • a fixing hole is formed at the elastic retaining ring, and the elastic retaining ring is fixedly connected to the static scroll component through the fixing hole.
  • the protrusion is also radially fitted in the circumferential ring groove to limit the radial movement of the static scroll member; and/or the portion of the outer peripheral wall of the static scroll member where the circumferential ring groove or protrusion is not formed and the shell A portion of the inner peripheral wall of the body, the inner peripheral surface of the main bearing housing or the inner peripheral surface of the fixing member where no circumferential ring groove or protrusion is formed is radially fitted to restrict radial movement of the static scroll member.
  • a positioning method for a fixed scroll component used with a scroll compressor includes a main bearing housing and a fixed scroll component, the main bearing housing has a main body portion, at least one The arm portion and at least one fitting groove are formed with a circumferential ring groove on the inner circumferential surface of the arm portion, and a protrusion is integrally formed on the static scroll component, and the positioning method includes:
  • a positioning hole is formed on the top surface of the arm portion of the main bearing housing, an anti-rotation pin is provided in the positioning hole, an anti-rotation groove is formed at the protrusion, and the positioning method further includes: passing a part of the anti-rotation pin Pass the positioning hole into the circumferential groove and insert into the anti-rotation groove.
  • the protrusion is also radially fitted in the circumferential ring groove to limit the radial movement of the static scroll member; and/or the portion of the outer peripheral wall where the protrusion is not formed and the inner peripheral surface of the main bearing seat are not The portion forming the circumferential ring groove forms a radial fit to limit the radial movement of the static scroll member.
  • a positioning method for a fixed scroll component used in a scroll compressor includes a main bearing housing and a fixed scroll component, the main bearing housing has a main body portion and an arm portion And an assembly groove, a circumferential ring groove is formed on the inner circumferential surface of the arm portion, and a step surface is formed on the outer circumferential wall of the static scroll component.
  • the positioning method includes:
  • the circlip is also radially fitted in the circumferential ring groove to limit the radial movement of the static scroll component; and/or the outer peripheral wall is formed with a portion of the inner circumferential surface of the main bearing seat where no circumferential ring groove is formed Radial fit to limit radial movement of the static scroll component.
  • one of the lower surface of the muffler cover of the scroll compressor or the upper surface of the fixed scroll member is formed with an anti-rotation key and the other is formed with a groove cooperating with the anti-rotation key, the positioning The method further includes: inserting the anti-rotation key into the groove.
  • the advantage of a scroll compressor according to the present disclosure or a scroll compressor assembled using the positioning method of the present disclosure is that its static scroll component directly achieves radial centering through a small clearance fit between the outer peripheral wall and the main bearing housing,
  • the axial limit of the static scroll component is achieved by the clearance fit between the circumferential ring groove and the protrusion or the elastic ring, which reduces the number of components, saves radial space and facilitates the control of the axial movement distance of the static scroll component;
  • the rotary key or anti-rotation pin can be integrated with the static scroll component or the noise reduction cover, which can reduce the number of parts, reduce the processing difficulty, reduce the processing cost, and make the assembly, disassembly and reinstallation of the scroll compressor easier , More reliable, etc.
  • FIG. 1 is a partial longitudinal cross-sectional view of a scroll compressor according to a first exemplary embodiment of the present disclosure
  • FIG. 2 is a perspective schematic view of a fixed scroll component of a scroll compressor according to the first exemplary embodiment of the present disclosure
  • FIG. 3 is a schematic perspective view of the main bearing housing of the scroll compressor according to the first exemplary embodiment of the present disclosure
  • FIG. 4 is a schematic perspective view when the fixed scroll component and the main bearing housing are assembled according to the first exemplary embodiment of the present disclosure
  • FIG. 5 is a schematic perspective view of the fixed scroll component after being assembled with the main bearing housing according to the first exemplary embodiment of the present disclosure
  • FIG. 6 is a partial longitudinal cross-sectional view of a scroll compressor according to a second exemplary embodiment of the present disclosure
  • FIG. 7 is a schematic perspective view of the main bearing housing of the scroll compressor according to the second exemplary embodiment of the present disclosure.
  • FIG. 8 is a perspective schematic view when the fixed scroll component and the main bearing housing are assembled according to the second exemplary embodiment of the present disclosure
  • FIG. 9 is a schematic perspective view of the second embodiment of the present disclosure when the fixed scroll component is assembled with the main bearing housing;
  • FIG. 10 is a partial longitudinal cross-sectional view of a scroll compressor according to a third exemplary embodiment of the present disclosure.
  • FIG. 11 is a schematic perspective view of a snap ring according to a third exemplary embodiment of the present disclosure.
  • FIG. 1 is a partial longitudinal cross-sectional view of a scroll compressor according to a first exemplary embodiment of the present disclosure.
  • the scroll compressor mainly includes a casing, a compression mechanism, a main bearing housing 14 and a driving mechanism (not shown).
  • the housing generally includes a generally cylindrical housing body 13, an upper end cover, and a lower end cover.
  • a muffler cover 11 is provided between the casing body 13 and the upper end cover to divide the internal space of the compressor into a low-pressure area and a high-pressure area.
  • the compression mechanism generally includes a fixed scroll member 12 and a movable scroll member 15. The compression mechanism is driven by the drive mechanism.
  • the movable scroll member 15 can be driven via the crank pin of the drive shaft, so that the movable scroll member 15 performs translational rotation relative to the stationary scroll member 12.
  • the axis of the movable scroll member 15 orbits in a circular orbit relative to the axis of the fixed scroll member 12, but both the movable scroll member 15 and the fixed scroll member 12 themselves do not rotate about their respective axes.
  • the compression mechanism is supported by the main bearing housing 14, which is fixedly connected to the housing body 13 or integrally formed with the housing body 13 by, for example, riveting.
  • the fixed scroll member 12 includes a base plate 124 provided with a spiral wrap at a lower portion of the base plate 124.
  • the scroll of the fixed scroll member 12 and the scroll of the movable scroll member 15 mesh with each other, and thus a series of compression chambers for compressing fluid such as refrigerant are formed between them.
  • These compression chambers are respectively a compression chamber at suction pressure, a compression chamber at intermediate pressure, and a compression chamber at discharge pressure from the outside to the inside in the radial direction.
  • the intermediate pressure is between the suction pressure and the discharge pressure of a fluid such as refrigerant.
  • the compression chamber at an intermediate pressure is referred to as an intermediate pressure chamber.
  • An annular recess 123 is formed on the upper portion of the base plate 124, and the seal assembly is disposed in the annular recess 123, so a back pressure cavity is formed between the seal assembly and the annular recess 123.
  • a communication hole 126 forming communication between the back pressure chamber and the intermediate pressure chamber is formed at the bottom of the annular recess 123.
  • the fixed scroll member 12 further includes a substantially cylindrical outer peripheral wall 125 extending downward from the base plate 124 and provided on the outer circumference of the wrap of the fixed scroll member 12.
  • One or more protrusions 122 protruding outward in the radial direction are formed on the outer peripheral wall 125.
  • the fixed scroll member 12 further includes an anti-rotation key 121 extending upward from the outer periphery of the base plate 124 and/or the annular recess 123 toward the wall.
  • the anti-rotation key 121 can be engaged with a groove formed on the lower surface of the muffler cover 11 to prevent the static scroll member 12 from rotating in the circumferential direction.
  • the anti-rotation key 121 can also be formed integrally with the lower surface of the muffler cover 11, and the anti-rotation is formed on the outer circumferential wall of the base plate 124 or the annular recess 123 of the fixed scroll member 12 Key-fit grooves (for example, grooves that open upward).
  • the anti-rotation key may also be a separate key, and therefore, a groove for accommodating the anti-rotation key is provided at both the fixed scroll member 12 and the sound attenuation cover 11.
  • the main bearing housing 14 includes a body portion 142 extending in the radial direction, and four arm portions 143 extending upward from the body portion 142 in the axial direction.
  • a circumferential ring groove 145 is formed on the inner circumferential surface of the arm portion 143.
  • An assembly groove 146 is formed between every two adjacent arm portions 143.
  • the circumferential ring groove 145 communicates with the fitting groove 146, that is, the bottom surface of the fitting groove 146 is flush with or lower than the bottom surface of the circumferential ring groove 145.
  • the main bearing housing 14 may include more or fewer arms according to design requirements.
  • the fitting groove 146 is formed on the arm portion 143 downward from the top surface of the arm portion 143 in the axial direction.
  • the number of fitting grooves 146 may be the same as the number of protrusions 122 on the fixed scroll member 12, and the circumferential width of the fitting grooves 146 may be greater than the circumferential width of the protrusions 122.
  • the outer diameter of the outer peripheral wall 125 (the portion that is not the protruding portion 122) of the fixed scroll 12 is slightly smaller than the inner diameter of the arm portion 143 (the portion that is not the circumferential ring groove 145) of the main bearing housing 14, so The outer peripheral wall 125 can fit inside the arm portion 143 of the main bearing housing with a small clearance, thereby realizing radial centering of the fixed scroll member 12.
  • the radial depth of the circumferential ring groove 145 is slightly larger than the radial length of the portion of the protrusion 122 located in the circumferential ring groove 145, so that the protrusion 122 and the circumferential ring groove 145 form a small clearance fit in the radial direction to achieve
  • the stationary scroll member 12 is radially centered.
  • Those skilled in the art should understand that only the small clearance of the outer peripheral wall 125 of the fixed scroll member 12 and the arm portion 143 of the main bearing housing 14 fits, or only the small clearance of the protrusion 122 and the circumferential ring groove 145 in the radial direction The cooperation can realize the radial centering of the static scroll component 12.
  • radial centering can also be achieved by simultaneously using the above two small clearance fits.
  • the above-mentioned two small clearance fits may refer to the outer diameter of the insert in the two parts that are matched with each other is equal to or slightly smaller than the inner diameter of the insert, so that the insert can be freely inserted into the insert At the same time, the radial movement of the insert relative to the inserted part is restricted or substantially restricted after insertion.
  • the axial height of the circumferential ring groove 145 is slightly larger than the thickness of the protrusion 122, so that the protrusion 122 can be clearance fit in the circumferential ring groove 145 to realize the axial floating of the static scroll member 12.
  • the clearance fit means that the thickness of the insert in the two parts that cooperate with each other is less than the axial height of the inserted piece, so that the insert can be freely inserted into the inserted piece while After insertion, the insert can move axially to a certain extent relative to the insert.
  • the fixed scroll member 12 is pressed against the movable scroll member 15, thereby preventing leakage between the respective compression chambers.
  • the fixed scroll member 12 can move slightly axially upward. Therefore, at the end surfaces of the respective scrolls of the fixed scroll member and the movable scroll member, a leakage passage that communicates with each compression chamber is formed, so that each compression chamber is unloaded. Since the outer peripheral wall 125 of the fixed scroll member 12 is engaged with the small clearance of the arm portion 143 of the main bearing housing 14, the fixed scroll member 12 can be kept radially centered. Due to the cooperation of the anti-rotation key 121 and the groove, the fixed scroll member 12 cannot move or rotate in the circumferential direction relative to the main bearing housing 14 (housing).
  • the outer peripheral wall 125 with a small clearance fit and the arm portion 143, the protrusion 122 with a clearance fit, and the circumferential ring groove 145, with a simpler structure, easier to manufacture, and easier
  • the method of assembly and higher reliability realizes the radial centering and rotation prevention of the fixed scroll member 12 while providing the fixed scroll member 12 with a certain axial flexibility. That is, the stationary scroll member 12 is prevented from rotating about its axis with respect to the main bearing housing 14 (housing) with slight axial movement relative to the main bearing housing 14 (housing).
  • the outer peripheral wall 125 of the fixed scroll member 12 directly forms a small clearance fit with the arm portion 143 of the main bearing housing 14 and is integrally formed on the outer periphery of the fixed scroll member 12
  • the protrusion 122 on the wall 125 forms a clearance fit with the circumferential ring groove 145 of the arm 143, eliminating the need to additionally provide a guide ring or using a special bolt with a guide sleeve, which reduces the number of parts and saves radial
  • the space and the axial floating distance of the fixed scroll member 12 can be controlled more easily and more reliably by adopting a circumferential ring groove.
  • the radial centering, axial floating, and axial floating limits of the fixed scroll component are achieved by directly establishing a cooperation between the fixed scroll component and the main bearing housing, so the dimensional chain is reduced and thus reduced To meet the accuracy requirements of the size.
  • FIGS. 6 to 9 are a partial longitudinal cross-sectional view of a scroll compressor according to a second exemplary embodiment of the present disclosure. Similar reference numerals are used below and in FIGS. 6 to 9 (in the second exemplary embodiment, "2" is substituted for "1" in the first exemplary embodiment as a starting point, and the rest remain the same) To identify similar parts.
  • the main structure and function of the scroll compressor are basically the same as those of the scroll compressor of the first exemplary embodiment, and therefore will not be described in detail.
  • the main bearing housing 24 includes the same main body portion 242, arm portion 243, circumferential ring groove 245 and the same as the main bearing housing 14 in the first exemplary embodiment.
  • one or more positioning holes 247 are formed on the top surface of the arm portion 243.
  • the positioning holes 247 extend downward from the top surface of the arm portion 243 and form a circumferential ring with the inner peripheral surface of the arm portion 243
  • the groove 245 is in communication.
  • the fixed scroll member 22 includes the same protrusions 222, annular recesses, base plate, outer peripheral wall, and communication hole as the fixed scroll member 12 in the first exemplary embodiment, as Alternatively or additionally, an anti-rotation key 126 is formed on the fixed scroll member 12, and an anti-rotation groove 2221 may be formed on the protrusion 222.
  • the anti-rotation groove 2221 may be formed integrally with a key groove equipped with a cross slip ring, or may be formed separately.
  • an anti-rotation pin 211 is further provided in the positioning hole 247, and a part of the anti-rotation pin 211 passes through the positioning hole 247 and enters the circumferential ring groove 245, and This portion is positioned in the anti-rotation groove 2221 of the protrusion 222, thereby preventing the stationary scroll member 22 from rotating about its axis.
  • the anti-rotation pin 211 and the positioning hole 247 have an interference fit.
  • the anti-rotation pin 211 can be accommodated in the groove
  • the key of the cross slip ring is accommodated in the radially inner part of the groove.
  • the fixed scroll member 22 and the main bearing housing 24 in the second exemplary embodiment are similar in structure to the first exemplary embodiment, they have similar effects to the first exemplary embodiment.
  • the static vortex can be realized in a simpler structure, easier to manufacture, easier to assemble, and more reliable by providing the outer wall with a small gap fit, the arm 243, the protrusion 222 with a gap fit, and the circumferential ring groove 245
  • the radial centering of the spiral member 22 provides the fixed scroll member 22 with a certain axial flexibility. The number of components is reduced, the processing accuracy requirements are reduced, the radial space is saved, and the axial floating distance of the static scroll component 22 is easier to control.
  • the anti-rotation pin 211 is matched with the anti-rotation groove 2221, so the static vortex can be realized in another way with a simple structure
  • the circumferential positioning of the rotating parts, and the appropriate size and strength of anti-rotation pins can be selected according to the displacement of the compressor, which improves the scope of application and reliability.
  • FIG. 10 is a partial longitudinal cross-sectional view of a scroll compressor according to a third exemplary embodiment of the present disclosure. Similar reference signs are used below and in FIG. 10 (in the third exemplary embodiment, "3" is substituted for "1" in the first exemplary embodiment as a starting point, and the rest remain the same) to identify similar Parts.
  • the main structure and function of the scroll compressor are basically the same as those of the scroll compressor of the first exemplary embodiment, and therefore will not be described in detail.
  • the main bearing housing 34 is the same as the main bearing housing 14 in the first exemplary embodiment and includes a main body portion, an arm portion, a circumferential ring groove, and a fitting groove.
  • the specific structure and function of the main bearing housing 34 and its components are the same as those of the first bearing housing 14 in the first exemplary embodiment, and will not be repeated here.
  • the stationary scroll member 32 includes the same anti-rotation key, annular recess, base plate, outer peripheral wall 325, and communication hole as the stationary scroll member 12 in the first exemplary embodiment as the outer periphery
  • a stepped surface 3251 is formed on the outer peripheral wall 325.
  • a snap ring 36 is provided between the fixed scroll member 32 and the main bearing housing 34.
  • This axial distance is greater than the thickness of the snap ring 36.
  • a part of the elastic retaining ring 36 is located above the stepped surface 3251, and the other part is located in the circumferential ring groove 345 and forms a clearance fit with the circumferential ring groove 345.
  • the snap ring 36 has a substantially circular ring shape with an opening.
  • the elastic retaining ring 36 has flat upper and lower surfaces, which is convenient for installation and cooperates with the stepped surface 3251 and the circumferential ring groove 345.
  • One or more fixing holes 361 are formed on the elastic retaining ring 36.
  • two fixing holes 361 are formed at the opening of the elastic ring 36.
  • the snap ring 36 is fixed to the fixed scroll member 32 through a fixing hole 361 with, for example, screws.
  • the snap ring 36 may not be fixedly connected to the fixed scroll member 32, but may be stably arranged between the fixed scroll member 32 and the main bearing seat by virtue of its own elasticity.
  • the outer peripheral wall 325 of the fixed scroll member 32 is slid into the arm portion of the main bearing housing 34 to form a small clearance fit between the outer peripheral wall 325 of the fixed scroll member 32 and the arm portion of the main bearing housing 34, thereby achieving Radial centering of the fixed scroll member 32;
  • the elastic retainer ring 36 is installed from the assembly groove between the fixed scroll member 32 and the main bearing housing 34, so that the elastic retainer ring 36 One part is located above the stepped surface 3251, and the other part of the circlip 36 is located in the circumferential ring groove 345; again, the circlip 36 is fixed on the static scroll member 32 to form the circlip 36 and the circumferential ring groove 345
  • the anti-rotation key of the fixed scroll member 32 and the muffler cover in FIGS. 10 and 11 (Not shown)
  • the fixed scroll member 32 and the main bearing housing 34 in the third exemplary embodiment are similar to the structure in the first exemplary embodiment, they have similar effects to the first exemplary embodiment.
  • the outer wall 325 with a small clearance fit, the arm, the elastic retaining ring 36 with a clearance fit, and the circumferential ring groove 345, the static vortex is realized in a simpler structure, easier to manufacture, easier to assemble, and more reliable
  • the radial centering of the spiral member 32 provides the fixed scroll member 32 with a certain axial flexibility.
  • the method of installing the circlip 36 and the fixed scroll component 32 can facilitate the assembly, disassembly, re-installation and replacement of components of the scroll compressor.
  • the circumferential ring groove is formed in the main bearing housing.
  • a circumferential ring groove may also be formed on other suitable fixing parts, for example, a circumferential ring groove is directly formed on the casing (such as the casing body) (in this case, it may be considered that the corresponding part A thickened portion is provided so as to form a circumferential ring groove), or a circumferential member is formed on a fixed member (such as a member similar to a guide ring) fixedly connected to the housing and/or the main bearing seat.
  • a circumferential ring groove is formed at the main bearing seat and a protrusion is provided at the fixed scroll member.
  • a protruding portion may be provided at the main bearing seat to form a circumferential ring groove at the fixed scroll member.

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Abstract

一种涡旋压缩机和用于涡旋压缩机的静涡旋部件的定位方法。该涡旋压缩机包括：壳体（13）、压缩机构和主轴承座（14,24,34），压缩机构包括静涡旋部件（12,22,32），静涡旋部件（12,22,32）包括基板和从基板向下延伸的外周壁，静涡旋部件（12,22,32）的外周壁设置在静涡旋部件（12,22,32）的涡卷外周，主轴承座（14,24,34）适于支撑压缩机构，在壳体（13）的内周壁处、在主轴承座（14,24,34）的内周表面处、或者在与壳体（13）和/或主轴承座（14,24,34）固定地连接的固定构件的内周表面处形成有周向环槽（145,245,345）和突起部中的一者，并且在静涡旋部件（12,22,32）的外周壁处设置有周向环槽（145,245,345）和突起部中的另一者，突起部轴向地间隙配合在周向环槽（145,245,345）中。采用上述压缩机和定位方法，能够减少部件数量、节省径向空间、便于控制静涡旋部件的轴向浮动、使涡旋压缩机的组装和拆卸变得更容易和可靠。

Description

涡旋压缩机及用于涡旋压缩机的静涡旋部件的定位方法
本申请要求以下中国专利申请的优先权：于2018年11月29日提交中国专利局的申请号为201811443474.8、发明创造名称为“涡旋压缩机及用于涡旋压缩机的静涡旋部件的定位方法”的中国专利申请；于2018年11月29日提交中国专利局的申请号为201822005773.5、发明创造名称为“涡旋压缩机”的中国专利申请。这些专利申请的全部内容通过引用结合在本申请中。
技术领域
本公开涉及一种涡旋压缩机，更具体地，涉及一种具有设置在静涡旋部件与主轴承座、壳体或固定构件之间的定位装置的涡旋压缩机。本公开还涉及一种用于涡旋压缩机的静涡旋部件的定位方法。
背景技术
涡旋压缩机一般包括壳体、容纳在壳体中的驱动机构、由驱动机构驱动的压缩机构、支撑压缩机构的主轴承座等。压缩机构一般包括相互啮合的动涡旋部件和静涡旋部件。一方面，静涡旋部件需要相对于主轴承座沿周向方向固定以防止静涡旋部件绕其轴线旋转。另一方面，静涡旋部件需要能够沿其轴线轻微地轴向运动，从而为涡旋压缩机提供一定的轴向柔性。
现有技术中常用的一种用于静涡旋部件的定位方式是：在静涡旋部件的外周设置有凸耳，在凸耳中形成有通孔，在主轴承座的臂部中形成有螺纹孔，通过带有导向套管的螺栓将静涡旋部件和主轴承座固定在一起。由于静涡旋部件的凸耳中所形成的通孔能够在导向套管上轴向滑动，因此允许静涡旋部件相对于主轴承座轻微地轴向运动。此外，通过螺栓防止静涡旋部件与主轴承座之间的沿周向方向的运动。
另外，在现有技术中常用的另一种用于静涡旋部件的定位方式中，在静涡旋部件的外周可设置有一个导向环，导向环中设置有通孔，使用螺栓穿过导向环中的通孔且旋拧在主轴承座的螺纹孔中。导向环允许静涡旋部件轴向运动。此外，静涡旋部件上可设置有另外的凹槽，并且可采用固定到主轴承座且配合在静涡旋部件上另外设置的凹槽中的定位销来防止静涡旋部件绕其轴线旋转。
然而，在上述第一种定位方式中，需要在静涡旋部件上加工通孔，并且需要使用导向套管和螺栓，这会额外增加压缩机的组装成本和组装时间。另外，需要在静涡旋部件的外周设置凸耳，因此难以减小静涡旋部件以及压缩机的径向尺寸。在上述第二种定位方式中，使用了与主轴承座通过螺钉而固定连接的附加导向环，这可能会增加压缩机的加工难度和加工成本。此外，两种定位方式中均采用螺钉/螺栓，在装配时需要提供足够的且尽可能均匀的预紧力来抵抗涡旋的径向力和轴向浮动时的载荷，这对螺钉/螺栓的强度有一定要求。此外，在两种定位方式中，静涡旋部件的径向对中和轴向限位均通过多个部件传递来实现(例如，在第一种定位方式中，静涡旋部件需借助于导向套管和螺栓实现径向对中，而在第二种定位方式中，静涡旋部件需借助于导向环实现径向对中)，这提高了相关配合尺寸的精度要求从而也提高了加工成本。此外，在两种定位方式中，静涡旋部件的轴向运动范围分别由螺栓帽底面和导向环底面来限制，这使得轴向运动范围的限制的可靠性有待改进。
因此，存在对于改进静涡旋部件的定位方式的需求。
发明内容
本公开的目的在于解决或至少减轻上述的问题中的至少一个问题，即提供一种涡旋压缩机以及一种用于涡旋压缩机的静涡旋部件的定位方法，该涡旋压缩机以及采用该定位方法装配的涡旋压缩机能够实现其静涡旋部件的径向对中、允许静涡旋部件相对于主轴承座轴向运动的同时防止静涡旋部件相对于主轴承座转动。
根据本公开的一个方面，提供了一种具有定位装置的涡旋压缩机，该涡旋压缩机包括：壳体、压缩机构和主轴承座，该压缩机构包括静涡旋部件，静涡旋部件包括基板和从基板向下延伸的外周壁，静涡旋部件的外周壁设置在静涡旋部件的涡卷外周，该主轴承座适于支撑该压缩机构，其中，在壳体的内周壁处、在主轴承座的内周表面处、或者在与壳体和/或主轴承座固定地连接的固定构件的内周表面处形成有周向环槽和突起部中的一者，并且在静涡旋部件的外周壁处设置有周向环槽和突起部中的另一者，突起部轴向地间隙配合在周向环槽中。
可选地，主轴承座具有主体部分、从主体部分沿轴向向上延伸的至少一个 臂部和与臂部相邻的至少一个装配槽，周向环槽形成在臂部的内周表面处，周向环槽与装配槽连通。
可选地，静涡旋部件一体形成有突起部。可选地，突起部的周向宽度小于装配槽的周向宽度，并且/或者，突起部的数量与装配槽的数量相对应。
可选地，涡旋压缩机包括消音盖，消音盖的下表面和静涡旋部件的基板的上表面中的一者处形成有防转键而另一者处形成有与防转键配合的凹槽。
可选地，主轴承座的臂部的顶表面形成有定位孔，定位孔与周向环槽连通，在定位孔中设置有防转销，防转销的一部分穿过定位孔而进入周向环槽中。可选地，突起部处形成有防转槽，当装配完成时防转销的一部分穿过定位孔而配合在防转槽中。可选地，防转槽构造成适于在防转槽的径向外侧部分容纳防转销而在防转槽的径向内侧部分容纳涡旋压缩机的十字滑环的键。
可选地，设置有连接至静涡旋部件的弹性挡圈，弹性挡圈的一部分从静涡旋部件的外周壁沿径向突出而用作突起部。可选地，弹性挡圈形成为具有开口的圆环形。可选地，静涡旋部件的外周壁处形成有台阶面，弹性挡圈设置在台阶面上方。可选地，弹性挡圈处形成有固定孔，弹性挡圈通过固定孔固定地连接至静涡旋部件。
可选地，突起部还径向地配合在周向环槽中以限制所述静涡旋部件的径向运动；并且/或者静涡旋部件的外周壁的未形成周向环槽或突起部的部分与壳体的内周壁、主轴承座的内周表面或固定构件的内周表面的未形成周向环槽或突起部的部分径向地配合以限制所述静涡旋部件的径向运动。
根据本公开的另一方面，提供了一种用与涡旋压缩机的静涡旋部件的定位方法，涡旋压缩机包括主轴承座和静涡旋部件，主轴承座具有主体部分、至少一个臂部和至少一个装配槽，在臂部的内周表面处形成有周向环槽，静涡旋部件处一体地形成有突起部，该定位方法包括：
使静涡旋部件的突起部与主轴承座的装配槽对准，将静涡旋部件的外周壁滑入主轴承座的臂部内侧，并将突起部置于装配槽中；以及使静涡旋部件沿周向旋转，将突起部滑入周向环槽中，以形成突起部与周向环槽之间的轴向间隙配合。
可选地，主轴承座的臂部的顶表面形成有定位孔，在定位孔中设置有防转销，突起部处形成有防转槽，该定位方法还包括：将防转销的一部分穿过定位 孔进入周向凹槽而插入防转槽中。
可选地，突起部还径向地配合在周向环槽中以限制所述静涡旋部件的径向运动；并且/或者外周壁的未形成突起部的部分与主轴承座的内周表面的未形成周向环槽的部分形成径向配合以限制所述静涡旋部件的径向运动。
根据本公开的又一方面，提供了一种用与涡旋压缩机的静涡旋部件的定位方法，涡旋压缩机包括主轴承座和静涡旋部件，主轴承座具有主体部分、臂部和装配槽，在臂部的内周表面处形成有周向环槽，静涡旋部件的外周壁处形成有台阶面，该定位方法包括：
将静涡旋部件的外周壁滑入主轴承座的臂部内侧；以及将弹性挡圈从装配槽装入静涡旋部件与主轴承座之间，使得弹性挡圈的一部分位于台阶面的上方，并且弹性挡圈的另一部分位于周向环槽内，以形成弹性挡圈与周向环槽之间的轴向间隙配合。
可选地，弹性挡圈还径向地配合在周向环槽中以限制所述静涡旋部件的径向运动；并且/或者外周壁与主轴承座的内周表面的未形成周向环槽的部分形成径向配合以限制所述静涡旋部件的径向运动。
可选地，涡旋压缩机的消音盖的下表面或静涡旋部件的上表面中的一者处形成有防转键而另一者处形成有与防转键配合的凹槽，该定位方法还包括：将防转键插至凹槽中。
根据本公开的涡旋压缩机或采用本公开的定位方法装配的涡旋压缩机的优点在于，其静涡旋部件直接通过外周壁与主轴承座之间的小间隙配合实现径向对中，静涡旋部件的轴向限位通过周向环槽与突起部或弹性挡圈之间的间隙配合实现，减少了部件数量、节省了径向空间并且便于控制静涡旋部件的轴向运动距离；防转键或防转销可以与静涡旋部件或消音盖一体化形成，可以减少零部件数量、减小加工难度、降低加工成本、使涡旋压缩机的组装、拆卸和重新安装变得更容易、更可靠等。
附图说明
通过以下参照附图的描述，本公开的一个或多个实施方式的特征和优点将变得更加容易理解。这里所描述的附图仅是出于说明目的而并非意图以任何方式限制本公开的范围。附图并非按比例绘制，而是可以放大或缩小一些特征 以显示特定部件的细节。在附图中：
图1是根据本公开的第一示例性实施方式的涡旋压缩机的局部纵剖面图；
图2是根据本公开的第一示例性实施方式的涡旋压缩机的静涡旋部件的立体示意图；
图3是根据本公开的第一示例性实施方式的涡旋压缩机的主轴承座的立体示意图；
图4是根据本公开的第一示例性实施方式的当静涡旋部件与主轴承座开始装配时的立体示意图；
图5是根据本公开的第一示例性实施方式的当静涡旋部件与主轴承座装配后的立体示意图；
图6是根据本公开的第二示例性实施方式的涡旋压缩机的局部纵剖面图；
图7是根据本公开的第二示例性实施方式的涡旋压缩机的主轴承座的立体示意图；
图8使根据本公开的第二示例性实施方式的当静涡旋部件与主轴承座开始装配时的立体示意图；
图9使根据本公开的第二示例性实施方式的当静涡旋部件与主轴承座装配后的立体示意图；
图10是根据本公开的第三示例性实施方式的涡旋压缩机的局部纵剖面图；以及
图11是根据本公开的第三示例性实施方式的弹性挡圈的立体示意图。
具体实施方式
下面将参照附图对本公开的优选实施方式进行描述，该描述仅仅是示例性的，而不构成对本公开及其应用的限制。
图1是根据本公开的第一示例性实施方式的涡旋压缩机的局部纵剖面图。如图1所示，涡旋压缩机主要包括壳体、压缩机构、主轴承座14以及驱动机构(未示出)。壳体一般包括呈大致圆筒形的壳体本体13、上端盖以及下端盖。另外，在壳体本体13与上端盖之间设置有消音盖11，以将压缩机内部空间分隔为低压区和高压区。压缩机构一般包括静涡旋部件12以及动涡旋部件15。压缩机构由驱动机构驱动。具体地，当驱动机构的驱动轴旋转时，能够经由驱 动轴的曲柄销驱动动涡旋部件15，使得动涡旋部件15相对于静涡旋部件12进行平动转动。换句话说，动涡旋部件15的轴线相对于静涡旋部件12的轴线沿圆形轨道绕动，但是动涡旋部件15和静涡旋部件12二者本身不会绕它们各自的轴线旋转。压缩机构由主轴承座14支撑，主轴承座14通过比如铆接等方式与壳体本体13固定连接或者与壳体本体13一体地形成。
涡旋压缩机的例如压缩机构和驱动机构等部件的更具体结构在申请人早先提交的中国专利申请号201120265622.9中有较详细描述。该专利申请的全部内容在此通过参引而并入本申请中。
根据第一示例性实施方式，如图1和图2所示，静涡旋部件12包括基板124，基板124的下部设置有螺旋形的涡卷。静涡旋部件12的涡卷与动涡旋部件15的涡卷彼此啮合，因此在它们之间形成一系列的用于压缩流体例如制冷剂的压缩腔。这些压缩腔沿径向从外向内分别为处于吸入压力的压缩腔、处于中间压力的压缩腔和处于排出压力的压缩腔。其中，中间压力处于流体例如制冷剂的吸入压力与排出压力之间。下文，将处于中间压力的压缩腔称之为中压腔。
基板124的上部形成有环形凹部123，密封组件设置在环形凹部123中，因此在密封组件与环形凹部123之间形成背压腔。环形凹部123的底部形成有在背压腔和中压腔之间形成连通的连通孔126。在压缩机运转过程中，中压腔中的压力通过连通孔126引入背压腔中，为静涡旋部件12提供向下的压力，从而将静涡旋部件12压在动涡旋部件15上，防止各个压缩腔之间的流体泄漏。
静涡旋部件12还包括从基板124向下延伸并且设置在静涡旋部件12的涡卷外周的大致圆筒形的外周壁125。外周壁125上形成有沿径向向外突出的一个或多个突起部122。静涡旋部件12还包括从例如基板124和/或环形凹部123的外周向壁向上延伸的防转键121。防转键121能够与形成于消音盖11的下表面的凹槽配合，防止静涡旋部件12的周向转动。除了图2中示出的方式之外，防转键121还可以与消音盖11的下表面一体形成，而在静涡旋部件12的基板124或环形凹部123的外周向壁上形成与防转键配合的凹槽(例如朝上开口的凹槽)。另外，还可以理解，防转键也可以为分体的键，由此在静涡旋部件12和消音盖11处均设置有用于容纳防转键的凹槽。
如图1和图3所示，主轴承座14包括沿径向延伸的主体部分142、和从 主体部分142沿轴向向上延伸的四个臂部143。臂部143的内周向表面上形成有周向环槽145。在每两个相邻的臂部143之间形成装配槽146。周向环槽145与装配槽146连通，也就是说，装配槽146的底表面与周向环槽145的底表面齐平或比周向环槽145的底表面更低。本领域技术人员应该明白，主轴承座14可以根据设计要求包括更多或更少的臂部。当臂部143的数量为一个时，可以视为在臂部143上从臂部143的顶表面沿轴向向下形成有装配槽146。装配槽146的数量与静涡旋部件12上的突起部122数量可以一致，并且装配槽146的周向宽度可以大于突起部122的周向宽度。
其中，静涡旋部件12的外周壁125(非突起部122的部分)的外径略小于主轴承座14的臂部143(非周向环槽145的部分)的内径，使得静涡旋部件12的外周壁125能够小间隙配合在主轴承座的臂部143内侧，实现静涡旋部件12的径向对中。附加性地，在装配完成时周向环槽145的径向深度略大于突起部122的位于周向环槽145中的部分的径向长度，使得突起部122与周向环槽145在径向上形成小间隙配合，实现静涡旋部件12的径向对中。本领域技术人员应该明白，仅通过静涡旋部件12的外周壁125与主轴承座14的臂部143的小间隙配合，或者仅通过突起部122与周向环槽145在径向方向上的小间隙配合即可以实现静涡旋部件12的径向对中。还可以理解，也可以同时借助上述两种小间隙配合来实现径向对中。这里，需要说明的是，上述两种小间隙配合可以指相互配合的两个部件中的插入件的外径等于或略微小于被插入件的内径，使得插入件可以自由地插入至被插入件中、同时在插入之后限制或基本限制插入件相对于被插入件的径向移动。此外，周向环槽145的轴向高度略大于突起部122的厚度，使得突起部122能够间隙配合在周向环槽145中，实现静涡旋部件12的轴向浮动。这里，需要说明的是，此处的间隙配合是指相互配合的两个部件中的插入件的厚度小于被插入件的轴向高度，使得插入件可以自由地插入至被插入件中、同时在插入之后插入件能够相对于被插入件在一定程度上沿轴向运动。
下面参照图4和图5对第一示例性实施方式的静涡旋部件12的定位方法进行说明。
首先，将静涡旋部件12的突起部122与主轴承座14的装配槽146对准，将静涡旋部件12的外周壁125滑入主轴承座14的臂部143内侧以形成静涡旋 部件12的外周壁125与主轴承座14的臂部143之间的小间隙配合，并将突起部122置于装配槽146中，从而实现静涡旋部件12的径向对中；其次，将静涡旋部件12沿周向旋转，将突起部122滑入周向环槽145中，以形成突起部122与周向环槽145之间的间隙配合，从而实现静涡旋部件12的轴向浮动(即，一定运动范围内的轴向浮动)；最后，使静涡旋部件12的防转键126与消音盖11(图4和图5未示出)上的凹槽对准而将防转键126装入凹槽中，从而防止静涡旋部件12绕其轴线转动。
在压缩机的正常运转过程中，由于背压腔中的压力，静涡旋部件12被压在动涡旋部件15上，从而防止各个压缩腔之间的泄漏。当压缩腔中存在过载时，由于突起部122与周向环槽145的间隙配合，所以静涡旋部件12能够向上轻微地轴向运动。因此，在静涡旋部件和动涡旋部件的各自的涡卷的端面处形成使得各个压缩腔连通的泄漏通道，使得各个压缩腔卸载。由于静涡旋部件12的外周壁125与主轴承座14的臂部143的小间隙配合，所以静涡旋部件12能够保持径向对中。而由于防转键121与凹槽的配合，所以静涡旋部件12不可相对于主轴承座14(壳体)周向运动或转动。
在本公开的第一示例性实施方式中，通过设置小间隙配合的外周壁125与臂部143、间隙配合的突起部122和周向环槽145，以一种结构更简单、更容易制造、更容易组装、可靠性更高的方式实现静涡旋部件12的径向对中和旋转防止，同时为静涡旋部件12提供一定的轴向柔性。即，在允许静涡旋部件12相对于主轴承座14(壳体)轻微地轴向运动的情况下防止静涡旋部件12相对于主轴承座14(壳体)绕其轴线旋转。具体地，由于根据本公开第一示例性实施方式的静涡旋部件12的外周壁125直接与主轴承座14的臂部143形成小间隙配合并且一体化地形成在静涡旋部件12的外周壁125上的突起部122与臂部143的周向环槽145形成间隙配合，不再需要另外设置导向环、也不需要使用特殊的带有导向套管的螺栓，减少了部件数量，节省了径向空间并且通过采用周向环槽的方式而更容易地且更可靠地控制静涡旋部件12的轴向浮动距离。而且，由于通过在静涡旋部件与主轴承座之间直接地建立配合来实现静涡旋部件的径向对中、轴向浮动及轴向浮动的限制，因此减小了尺寸链进而减小了配合尺寸的精度要求。
同时，通过在静涡旋部件12或消音盖11上一体化地形成防转键，也不 需要使用额外的定位销以及另外设置与定位销相配合的凹槽等结构，因此本公开能够完全实现静涡旋部件的无螺钉连接，使得静涡旋部件的径向对中、旋转防止和轴向柔性的结构得到简化，从而能够减少零部件数量、减小加工难度、降低加工成本、节省组装时间、使涡旋压缩机的组装、拆卸和重新安装变得更容易等。
图6是根据本公开的第二示例性实施方式的涡旋压缩机的局部纵剖面图。在下文和图6至图9中使用相似的附图标记(在第二示例性实施方式中以“2”替代第一示例性实施方式中的“1”为起始，而其余部分保持一致)来标识相似的部件。该涡旋压缩机与第一示例性实施方式的涡旋压缩机的主要结构和功能基本一致，因此不再赘述。
根据第二示例性实施方式，如图6和图7所示，主轴承座24除了包括与第一示例性实施方式中的主轴承座14相同的主体部分242、臂部243、周向环槽245和装配槽246之外，在臂部243的顶表面还形成有一个或多个定位孔247，该定位孔247从臂部243的顶表面向下延伸并与臂部243的内周表面形成的周向环槽245连通。
如图6至图9所示，静涡旋部件22除了包括与第一示例性实施方式中的静涡旋部件12相同的突起部222、环形凹部、基板、外周壁和连通孔之外，作为在静涡旋部件12上形成防转键126的替代方案或者附加地，可以在突起部222上形成有防转槽2221。该防转槽2221可以与装配十字滑环的键槽一体形成，也可以单独形成。
参照图6，静涡旋部件22与主轴承座24完成装配时，在定位孔247中还设置有防转销211，防转销211的一部分穿过定位孔247而进入周向环槽245中，并且该部分定位在突起部222的防转槽2221中，从而防止静涡旋部件22绕其轴线旋转。优选地，防转销211与定位孔247过盈配合。另外，在用于容纳防转销211的槽与用于容纳十字滑环的键的槽合二为一(即一体形成为防转槽2221)的情况下，可以使防转销211容纳在槽的径向外侧部分并且使十字滑环的键容纳在槽的径向内侧部分。
下面参照图8和图9对第二示例性实施方式的静涡旋部件22的定位方法进行说明。
首先，将静涡旋部件22的突起部222与主轴承座24的装配槽246对准， 将静涡旋部件22的外周壁滑入主轴承座24的臂部243内侧以形成静涡旋部件22的外周壁与主轴承座24的臂部243之间的小间隙配合，并将突起部222置于装配槽246中，从而实现静涡旋部件22的径向对中；其次，将静涡旋部件22沿周向旋转，将突起部222滑入周向环槽245中，以形成突起部222与周向环槽245之间的间隙配合，从而实现静涡旋部件22的轴向浮动(即，一定运动范围内的轴向浮动)；最后，使臂部243的定位孔247与突起部222的防转槽2221对准，将防转销211从定位孔247插入使防转销的一部分穿过定位孔247进入周向凹槽245而插入防转槽2221中，从而防止静涡旋部件22绕其轴线转动。
由于第二示例性实施方式中的静涡旋部件22和主轴承座24与第一示例性实施方式中的结构相似，因此具有与第一示例性实施方式相似的效果。例如同样通过设置小间隙配合的外周壁与臂部243、间隙配合的突起部222和周向环槽245，以一种结构更简单、更容易制造、更容易组装、可靠性更高的方式实现静涡旋部件22的径向对中，同时为静涡旋部件22提供一定的轴向柔性。减少了部件数量、降低了加工精度要求、节省了径向空间并且更易于控制静涡旋部件22的轴向浮动距离。
此外，通过在主轴承座24上另外设置定位孔247并与另外的防转销211配合，进而使防转销211与防转槽2221配合，因此可以采用结构简单的另一种方式实现静涡旋部件的周向定位，而且，可以根据压缩机的排量等选择合适的尺寸及强度的防转销，提升了适用范围及可靠性。通过将用于容纳防转销211的槽与用于容纳十字滑环的键的槽合二为一，也简化了结构并节约了成本。
图10是根据本公开的第三示例性实施方式的涡旋压缩机的局部纵剖面图。在下文和图10中使用相似的附图标记(在第三示例性实施方式中以“3”替代第一示例性实施方式中的“1”为起始，而其余部分保持一致)来标识相似的部件。该涡旋压缩机与第一示例性实施方式的涡旋压缩机的主要结构和功能基本一致，因此不再赘述。
根据第三示例性实施方式，主轴承座34与第一示例性实施方式中的主轴承座14相同，包括主体部分、臂部、周向环槽和装配槽。主轴承座34及其部件的具体结构和功能与第一示例性实施方式中的主轴承座14相同，在此不再赘述。
如图10所示，静涡旋部件32除了包括与第一示例性实施方式中的静涡旋部件12相同的防转键、环形凹部、基板、外周壁325和连通孔之外，作为在外周壁325上形成突起部的替代方案，在外周壁325上形成台阶面3251。另外在静涡旋部件32与主轴承座34之间还设置有弹性挡圈36。将静涡旋部件32装入主轴承座34时，该台阶面3521低于周向环槽345的位于上方的内表面，也就是说，该台阶面3521与周向环槽345的位于上方的内表面之间具有一定的轴向距离。该轴向距离大于弹性挡圈36的厚度。弹性挡圈36的一部分位于台阶面3251的上方，另一部分位于周向环槽345内并与周向环槽345形成间隙配合。
如图11所示，弹性挡圈36为具有开口的大致圆环形。弹性挡圈36具有平坦的上表面和下表面，便于安装以及与台阶面3251、周向环槽345配合。在弹性挡圈36上形成有一个或多个固定孔361。优选地，在弹性挡圈36的开口处形成有两个固定孔361。弹性挡圈36通过固定孔361、采用例如螺钉固定在静涡旋部件32上。然而，可以理解，弹性挡圈36也可以不与静涡旋部件32固定连接，而是借助于其自身弹性而可以稳定地布置在静涡旋部件32与主轴承座之间。
下面对第三示例性实施方式的静涡旋部件32的定位方法进行说明。
首先，将静涡旋部件32的外周壁325滑入主轴承座34的臂部内侧以形成静涡旋部件32的外周壁325与主轴承座34的臂部之间的小间隙配合，从而实现静涡旋部件32的径向对中；其次，利用弹性挡圈36的开口，将弹性挡圈36从装配槽装入静涡旋部件32与主轴承座34之间，使得弹性挡圈36的一部分位于台阶面3251的上方，并且弹性挡圈36的另一部分位于周向环槽345内；再次，将弹性挡圈36固定在静涡旋部件32上，以形成弹性挡圈36与周向环槽345之间的间隙配合，从而实现静涡旋部件32的轴向浮动(即，一定运动范围内的轴向浮动)；最后，使静涡旋部件32的防转键与消音盖(图10和图11中未示出)上的凹槽对准而将防转键装入凹槽中，从而防止静涡旋部件32绕其轴线转动。
由于第三示例性实施方式中的静涡旋部件32和主轴承座34与第一示例性实施方式中的结构相似，因此具有与第一示例性实施方式相似的效果。例如通过设置小间隙配合的外周壁325与臂部、间隙配合的弹性挡圈36和周向环 槽345，以一种结构更简单、更容易制造、更容易组装、可靠性更高的方式实现静涡旋部件32的径向对中，同时为静涡旋部件32提供一定的轴向柔性。同时，通过在静涡旋部件32或消音盖上一体化地形成防转键，使得静涡旋部件的径向对中和轴向柔性的结构得到简化，从而能够减少零部件数量、减小加工难度、降低加工成本、节省了径向空间并且更易于控制静涡旋部件32的轴向浮动距离。
此外，采用弹性挡圈36与静涡旋部件32安装的方式，可以方便涡旋压缩机的组装、拆卸、重新安装及更换部件等。
本公开容许各种可行的变型。例如，在上述实施方式中，描述了在主轴承座中形成周向环槽。然而，可以理解，也可以在其他合适的固定部上形成周向环槽，例如直接在壳体(比如壳体本体)上形成周向环槽(在这种情况下，可以考虑在壳体本体的相应部分上设置加厚部以便于形成周向环槽)、或者在与壳体和/或主轴承座固定地连接的固定构件(比如类似于导向环的构件)上形成周向环槽。又例如，在上述实施方式中，描述了在主轴承座处形成周向环槽而在静涡旋部件处设置突起部。然而，可以理解，也可以在主轴承座处设置突起部而在静涡旋部件处形成周向环槽。
尽管在此已详细描述本公开的各种实施方式，但是应该理解本公开并不局限于这里详细描述和示出的具体实施方式，在不偏离本公开的实质和范围的情况下可由本领域的技术人员实现其它的变型和变体。所有这些变型和变体都落入本公开的范围内。而且，所有在此描述的构件都可以由其他技术性上等同的构件来代替。

Claims (19)

  1. 一种涡旋压缩机，所述涡旋压缩机包括：
    壳体(13)；
    压缩机构，所述压缩机构包括静涡旋部件(12,22,32)，所述静涡旋部件(12,22,32)包括基板和从所述基板向下延伸的外周壁，所述静涡旋部件(12,22,32)的外周壁设置在所述静涡旋部件(12,22,32)的涡卷外周；以及
    主轴承座(14,24,34)，所述主轴承座(14,24,34)适于支撑所述压缩机构，
    其中，在所述壳体(13)的内周壁处、在所述主轴承座(14,24,34)的内周表面处、或者在与所述壳体和/或所述主轴承座固定地连接的固定构件的内周表面处形成有周向环槽(145,245,345)和突起部中的一者，并且
    在所述静涡旋部件(12,22,32)的外周壁处设置有所述周向环槽(145,245,345)和所述突起部中的另一者，所述突起部轴向地间隙配合在所述周向环槽(145,245,345)中。
  2. 根据权利要求1所述的涡旋压缩机，其中，所述主轴承座(14,24,34)具有主体部分(142,242)、从所述主体部分(142,242)沿轴向向上延伸的至少一个臂部(143,243)和与所述臂部(143,243)相邻的至少一个装配槽(146，246)，所述周向环槽(145,245,345)形成在所述臂部(143，243)的内周表面处，所述周向环槽(145,245,345)与所述装配槽(146，246)连通。
  3. 根据权利要求2所述的涡旋压缩机，其中，所述静涡旋部件(12,22)一体形成有所述突起部(122,222)。
  4. 根据权利要求3所述的涡旋压缩机，其中，所述突起部(122,222)的周向宽度小于所述装配槽(146,246)的周向宽度，并且/或者，所述突起部(122,222)的数量与所述装配槽的数量(146,246)相对应。
  5. 根据权利要求3所述的涡旋压缩机，其中，所述涡旋压缩机包括消音 盖(11)，所述消音盖(11)的下表面和所述静涡旋部件(12)的基板的上表面中的一者处形成有防转键(121,321)而另一者处形成有与所述防转键(121，321)配合的凹槽。
  6. 根据权利要求3所述的涡旋压缩机，其中，所述主轴承座(24)的臂部(243)的顶表面形成有定位孔(247)，所述定位孔(247)与所述周向环槽(245)连通，在所述定位孔(247)中设置有防转销(211)，所述防转销(211)的一部分穿过所述定位孔(247)而进入所述周向环槽(245)中。
  7. 根据权利要求6所述的涡旋压缩机，其中，所述突起部(222)处形成有防转槽(2221)，当装配完成时所述防转销(211)的一部分穿过所述定位孔(247)而配合在所述防转槽(2221)中。
  8. 根据权利要求7所述的涡旋压缩机，其中，所述防转槽(2221)构造成适于在所述防转槽(2221)的径向外侧部分容纳所述防转销(211)而在所述防转槽(2221)的径向内侧部分容纳所述涡旋压缩机的十字滑环的键。
  9. 根据权利要求2所述的涡旋压缩机，其中，设置有连接至所述静涡旋部件(12,22)的弹性挡圈(36)，所述弹性挡圈(36)的一部分从所述静涡旋部件(12,22)的外周壁(325)沿径向突出而用作所述突起部。
  10. 根据权利要求9所述的涡旋压缩机，其中，所述弹性挡圈(36)形成为具有开口的圆环形。
  11. 根据权利要求9所述的涡旋压缩机，其中，所述静涡旋部件(32)的外周壁(325)处形成有台阶面(3251)，所述弹性挡圈(36)设置在所述台阶面(3251)上方。
  12. 根据权利要求9所述的涡旋压缩机，其中，所述弹性挡圈(36)处形成有固定孔(361)，所述弹性挡圈(36)通过所述固定孔(361)固定地连接 至所述静涡旋部件(32)。
  13. 根据权利要求1至12中的任一项所述的涡旋压缩机，其中：
    所述突起部还径向地配合在所述周向环槽中以限制所述静涡旋部件的径向运动；并且/或者
    所述静涡旋部件(12，22，32)的外周壁(125，325)的未形成所述周向环槽(145，245，345)或所述突起部的部分与所述壳体(13)的内周壁、所述主轴承座(14，24，34)的内周表面或所述固定构件的内周表面的未形成所述周向环槽(145，245，345)或所述突起部的部分径向地配合以限制所述静涡旋部件的径向运动。
  14. 一种用于涡旋压缩机的静涡旋部件的定位方法，其中，所述涡旋压缩机包括主轴承座(14,24)和静涡旋部件(12,22)，所述主轴承座(14,24)具有主体部分(142,242)、至少一个臂部(143,243)和至少一个装配槽(146,246)，在所述臂部(143,243)的内周表面处形成有周向环槽(145,245)，所述静涡旋部件(12,22)处一体地形成有突起部(122,222)，所述定位方法包括：
    使所述静涡旋部件(12,22)的突起部(122,222)与所述主轴承座(14,24)的装配槽(146,246)对准，将所述静涡旋部件(12，22)的外周壁(125)滑入所述主轴承座(14，24)的臂部(143，243)内侧，并将所述突起部(122,222)置于所述装配槽(146,246)中；以及
    使所述静涡旋部件(12,22)沿周向旋转，将所述突起部(122,222)滑入所述周向环槽(145,245)中，以形成所述突起部(122,222)与所述周向环槽(145,245)之间的轴向间隙配合。
  15. 根据权利要求14所述的用于涡旋压缩机的静涡旋部件的定位方法，其中，所述主轴承座(24)的臂部(243)的顶表面形成有定位孔(247)，在所述定位孔(247)中设置有防转销(211)，所述突起部(222)处形成有防转槽(2221)，
    所述定位方法还包括：将所述防转销(211)的一部分穿过所述定位孔(247)进入所述周向凹槽(245)而插入所述防转槽(2221)中。
  16. 根据权利要求14或15中的任一项所述的用于涡旋压缩机的静涡旋部件的定位方法，其中，
    所述突起部(122,222)还径向地配合在所述周向环槽(145,245)中以限制所述静涡旋部件的径向运动；并且/或者
    所述外周壁(125，325)的未形成所述突起部(122,222)的部分与所述主轴承座(14,24)的内周表面的未形成所述周向环槽(145,245)的部分形成径向配合以限制所述静涡旋部件的径向运动。
  17. 一种用于涡旋压缩机的静涡旋部件的定位方法，其中，所述涡旋压缩机包括主轴承座(34)和静涡旋部件(32)，所述主轴承座(34)具有主体部分、臂部和装配槽，在所述臂部的内周表面处形成有周向环槽(345)，所述静涡旋部件(32)的外周壁(325)处形成有台阶面(3251)，所述定位方法包括：
    将所述静涡旋部件(32)的外周壁(325)滑入所述主轴承座(34)的臂部内侧；以及
    将弹性挡圈(36)从所述装配槽装入所述静涡旋部件(32)与所述主轴承座(34)之间，使得所述弹性挡圈(36)的一部分位于所述台阶面(3251)的上方，并且所述弹性挡圈(36)的另一部分位于所述周向环槽(345)内，以形成所述弹性挡圈(36)与所述周向环槽(345)之间的轴向间隙配合。
  18. 根据权利要求17中的任一项所述的用于涡旋压缩机的静涡旋部件的定位方法，其中，
    所述弹性挡圈(36)还径向地配合在所述周向环槽(345)中以限制所述静涡旋部件的径向运动；并且/或者
    所述外周壁(325)与所述主轴承座(14,24,34)的内周表面的未形成所述周向环槽(345)的部分形成径向配合以限制所述静涡旋部件的径向运动。
  19. 根据权利要求14或17所述的用于涡旋压缩机的静涡旋部件的定位方法，其中，所述涡旋压缩机的消音盖(11,31)的下表面或所述静涡旋部件(12,32)的上表面中的一者处形成有防转键(121,321)而另一者处形成有与所述 防转键(121,321)配合的凹槽，
    所述定位方法还包括：将所述防转键(121,321)插至所述凹槽中。
PCT/CN2019/115285 2018-11-29 2019-11-04 涡旋压缩机及用于涡旋压缩机的静涡旋部件的定位方法 WO2020108232A1 (zh)

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CN1419633A (zh) * 2000-03-24 2003-05-21 蜗卷技术公司 互锁的涡旋压缩机零件
CN103032315A (zh) * 2011-09-30 2013-04-10 丹佛斯（天津）有限公司 用于涡旋压缩机的联轴节和涡旋压缩机
CN203614400U (zh) * 2013-12-12 2014-05-28 艾默生环境优化技术(苏州)有限公司 涡旋压缩机
CN205714778U (zh) * 2016-06-21 2016-11-23 新昌县大明制冷机厂 一种具有防自转装置的涡旋压缩机
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JPS5928090B2 (ja) * 1976-10-12 1984-07-10 日本電気ホームエレクトロニクス株式会社 タ−レツト式チユ−ナ
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CN103032315A (zh) * 2011-09-30 2013-04-10 丹佛斯（天津）有限公司 用于涡旋压缩机的联轴节和涡旋压缩机
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