WO2023065753A1 - Bearing cylinder for compressor, compressor and air conditioner - Google Patents

Bearing cylinder for compressor, compressor and air conditioner Download PDF

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Publication number
WO2023065753A1
WO2023065753A1 PCT/CN2022/108061 CN2022108061W WO2023065753A1 WO 2023065753 A1 WO2023065753 A1 WO 2023065753A1 CN 2022108061 W CN2022108061 W CN 2022108061W WO 2023065753 A1 WO2023065753 A1 WO 2023065753A1
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Prior art keywords
outer ring
compressor
inner ring
bearing
lubricating oil
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PCT/CN2022/108061
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French (fr)
Chinese (zh)
Inventor
万鹏凯
莫宗林
任丽萍
罗发游
邹鹏
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珠海格力电器股份有限公司
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Publication of WO2023065753A1 publication Critical patent/WO2023065753A1/en

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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
    • 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
    • F04C29/0007—Injection of a fluid in the working chamber for sealing, cooling and lubricating
    • 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
    • F04C2240/00—Components
    • F04C2240/10—Stators

Definitions

  • the present disclosure relates to the technical field of compressors, in particular to a bearing-type cylinder for a compressor, a compressor and an air conditioner.
  • a compressor is proposed in the related art.
  • a bearing-type cylinder By adopting a bearing-type cylinder, it is ensured that the relative sliding between the head of the slide vane and the inner wall of the inner ring is converted into a rolling motion between the inner ring and the rolling elements, thereby reducing the mechanical power consumption of the compressor and improving the performance of the compressor. efficiency.
  • the unreasonable design of the bearing cylinder structure and related parameters of this scheme may easily lead to poor compression energy efficiency of the compressor and even abnormal wear and tear.
  • the technical problem to be solved in the present disclosure is to provide a bearing cylinder for a compressor, a compressor and an air conditioner, which can effectively reduce the abnormal wear of the bearing cylinder and improve the compression energy efficiency of the compressor.
  • the present disclosure provides a bearing-type cylinder, which includes an outer ring, a rolling body and an inner ring, the rolling body is rotatably arranged between the outer ring and the inner ring, and the outer ring is axially provided with a screw avoidance hole, A compression medium flow passage and a lubricating oil passage configured to deliver lubricating oil to a cavity between the outer ring and the inner ring.
  • the inner diameter of the outer ring is D1
  • the outer diameter of the inner ring is D2
  • D1-D2 ⁇ 2mm is D1
  • the radial thickness L of the inner ring is ⁇ 2mm.
  • the total axial height of the rolling elements is h
  • the axial height of the outer ring is H
  • the axial height of the inner ring is less than the axial height of the outer ring.
  • the bearing cylinder has an integrated structure of the inner and outer rings, and the height difference between the outer ring and the inner ring at both ends is the same, wherein the height difference on one side is ⁇ h1, 0.01 ⁇ h1 ⁇ 0.03mm.
  • a compressor including the above-mentioned bearing cylinder for a compressor.
  • the volume of the compressor is V
  • the unit is mm 3
  • the axial height of the outer ring is H1
  • the unit is mm
  • an air conditioner including the above-mentioned bearing cylinder or compressor for a compressor.
  • the bearing cylinder used for compressors includes an outer ring, a rolling body and an inner ring.
  • the rolling body is rotatably arranged between the outer ring and the inner ring.
  • the bearing-type cylinder is provided with a lubricating oil flow channel on the outer ring, which can use the lubricating oil flow channel to deliver lubricating oil to the rolling element installation cavity between the outer ring and the inner ring, so that the rolling element can be lubricated conveniently and the movement resistance can be reduced.
  • the lubricating oil can be used to seal the bearing cylinder, improve the bearing capacity of the bearing cylinder, and improve the reliability of the compressor while improving the energy efficiency of the compressor.
  • Fig. 1 is a schematic structural view of a bearing cylinder according to an embodiment of the present disclosure
  • FIG. 2 is a schematic cross-sectional structural view of a bearing cylinder according to an embodiment of the present disclosure
  • Fig. 3 is a schematic diagram of an enlarged structure at L in Fig. 2;
  • Fig. 4 is a structural dimension diagram of a bearing cylinder according to an embodiment of the present disclosure.
  • Fig. 5 is a structural dimension diagram of a bearing cylinder according to an embodiment of the present disclosure.
  • Fig. 6 is a structural dimension diagram of a rolling element of a bearing cylinder according to an embodiment of the present disclosure
  • Fig. 7 is a curve diagram of the bearing load of the main shaft length and short length and the COP of the compressor under different V/(1000*H1).
  • a bearing cylinder includes an outer ring 1, a rolling body 2 and an inner ring 3, and the rolling body 2 is rotatably arranged between the outer ring 1 and the inner ring 3,
  • the outer ring 1 is provided with a screw escape hole 4, a compressed medium flow channel 5 and a lubricating oil flow channel 6 in the axial direction.
  • the lubricating oil flow channel 6 communicates with the chamber between the outer ring 1 and the inner ring 3 to transport the lubricating oil. to the chamber.
  • the bearing-type cylinder is provided with a lubricating oil flow channel 6 on the outer ring 1, and the lubricating oil flow channel 6 can be used to deliver lubricating oil to the rolling element installation cavity between the outer ring 1 and the inner ring 3, so that the rolling element 2 can be conveniently installed.
  • lubricating oil can be used to seal the bearing cylinder to improve the bearing capacity of the bearing cylinder. While improving the energy efficiency of the compressor, it can also improve the reliability of the compressor.
  • an oil channel is provided on the side of the lubricating oil flow channel 6 close to the inner ring 3, and the oil channel communicates with the lubricating oil flow channel 6 and the chamber between the outer ring 1 and the inner ring 3, thereby enabling It is convenient to transport the lubricating oil in the lubricating oil flow channel 6 to the chamber, and lubricate the rolling element 2 between the outer ring 1 and the inner ring 3 .
  • the oil passage area of the oil channel should be reasonably designed. In one embodiment, the oil passage area of the oil channel ranges from 0.03mm 2 to 0.1mm 2 .
  • the bearing type cylinder also includes a cage 7, which is arranged between the outer ring 1 and the inner ring 3, and the rolling body 2 is installed through the cage 7.
  • the screw avoidance holes 4 have multiple structures of different sizes, so as to meet the installation requirements of screws of different specifications.
  • the screw avoidance holes 4 are divided into two sizes, and the screw avoidance holes 4 of the two sizes are alternately arranged in the circumferential direction of the outer ring 1 .
  • the compressed medium channel 5 is also a plurality of structures of different sizes, which may be circular or waist-shaped holes. Among them, the waist hole is more suitable for the situation where the structural distance is insufficient, but a large flow area is required.
  • the lubricating oil flow channel 6 is in order to meet the lubricating oil circulation requirements of the bearing type cylinder or other structural pump body parts, and can be a plurality of structures of different shapes.
  • the lubricating oil flow channel 6 is a circular hole.
  • the number of lubricating oil flow passages 6 is at least one, and the flow area S of a single lubricating oil flow passage 6 is greater than or equal to 3 mm 2 , thereby ensuring that the lubricating oil flow passage 6 has a sufficiently large flow area and reducing the flow of lubricating oil.
  • the flow resistance ensures that the lubricating oil can fill the space before the outer ring 1 and inner ring 3, fully lubricate the rolling element 2, reduce the friction between the rolling element 2 and the outer ring 1 and inner ring 3, and reduce friction loss.
  • the lubricating oil can be more fully utilized to realize the sealing of the bearing cylinder.
  • the oil needs to enter the oil from the end face of the outer ring 1.
  • the oil inlet passage between the outer ring 1 and the inner ring 3 is required to be large enough.
  • the inner diameter of the outer ring 1 is D1
  • the outer diameter of the inner ring 3 is D2
  • D1-D2 ⁇ 2mm so that the lubricating oil can more fully contact the rolling body 2 and effectively lubricate the rolling body 2.
  • the radial thickness L of the inner ring 3 is greater than or equal to 2mm, so that the end surface of the inner ring 3 has a sufficient sealing area to form a sealing oil film to ensure the tightness of the inner ring 3 during rotation.
  • the radial thickness L of the inner ring 3 is the thickness after the chamfering is removed, that is, the radial thickness of the inner ring 3 should be the end face width capable of forming an oil film.
  • the total axial height of the rolling elements 2 is h
  • the axial height of the outer ring 1 is H
  • h ⁇ H/4 Since the weakest structure of the bearing cylinder under radial load is the rolling element 2, the actual bearing range is the contact distance between the rolling element 2 and the inner and outer rings.
  • the relationship between the total axial height h of the body 2 and the axial height H of the outer ring 1 satisfies h ⁇ H/4.
  • the single-row ball h the rolling body diameter d
  • the double-row ball h 2d
  • the h of the cylindrical roller or needle roller bearing is the effective contact height between the rolling body 2 and the inner and outer rings.
  • the axial height of the inner ring 3 is smaller than the axial height of the outer ring 1 . Because the inner ring 3 of the bearing type cylinder needs to rotate, the outer ring 1 is pressed on the upper flange and the lower flange by screws, and is fixedly arranged. In order to ensure the smooth rotation of the inner ring 3 and meet the sealing requirements of the rolling body space and the front and rear chambers of the slide, the axial height of the inner ring 3 must be smaller than the axial height of the outer ring 1, so as to prevent the inner ring 3 from contacting the upper flange. Or contact wear occurs on the lower flange.
  • the inner and outer rings of the bearing cylinder are integrated, and the height difference between the outer ring 1 and the inner ring 3 at both ends is the same, wherein the height difference is ⁇ h1, 0.01 ⁇ h1 ⁇ 0.03mm.
  • the compressor includes a bearing cylinder, which is the bearing cylinder described above.
  • the volume of the compressor is defined as Vmm 3
  • the axial height of the outer ring 1 is H1mm
  • the relationship between V and H1 is required to satisfy 1.9mm 2 ⁇ V/(1000*H1) ⁇ 3.8mm 2 .
  • the load of the compressor pump body is borne by the upper and lower flanges.
  • the energy efficiency of the compressor shows a trend of rising first and then falling, so the upper limit requirement is increased.
  • an air conditioner includes the above-mentioned bearing cylinder or the above-mentioned compressor.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

A bearing cylinder for a compressor, a compressor and an air conditioner. The bearing cylinder comprises an outer ring (1), a rolling body (2) and an inner ring (3), wherein the rolling body (2) can be arranged between the outer ring (1) and the inner ring (3) in a rotatable manner; the outer ring (1) is provided with a screw avoidance hole (4), a compression medium flow channel (5) and a lubricating oil flow channel (6) in an axially penetrating manner; and the lubricating oil flow channel (6) is configured to convey lubricating oil towards a cavity between the outer ring (1) and the inner ring (3). Abnormal wear of the bearing cylinder is effectively reduced, and the compression energy efficiency of the compressor is improved.

Description

用于压缩机的轴承式气缸、压缩机和空调器Bearing cylinders for compressors, compressors and air conditioners
相关申请的交叉引用Cross References to Related Applications
本公开是以中国申请号为202111236138.8，申请日为2021年10月22日的申请为基础，并主张其优先权，该中国申请的公开内容在此作为整体引入本申请中。This disclosure is based on the application with the Chinese application number 202111236138.8 and the filing date is October 22, 2021, and claims its priority. The disclosure content of the Chinese application is hereby incorporated into this application as a whole.
技术领域technical field
本公开涉及压缩机技术领域，具体涉及一种用于压缩机的轴承式气缸、压缩机和空调器。The present disclosure relates to the technical field of compressors, in particular to a bearing-type cylinder for a compressor, a compressor and an air conditioner.
背景技术Background technique
现有传统旋叶式压缩机滑片端部和气缸内壁磨损严重，造成压缩机机械功耗偏大，整体能效较差，严重时甚至引起异常磨损等可靠性问题。The end of the sliding vane and the inner wall of the cylinder of the existing traditional rotary vane compressor are severely worn, resulting in excessive mechanical power consumption of the compressor, poor overall energy efficiency, and even abnormal wear and other reliability problems in severe cases.
相关技术中提出了一种压缩机，通过采用轴承式气缸，保证滑片头部与内圈内壁的相对滑动转为内圈与滚动体的滚动运动，从而降低压缩机机械功耗，提高压缩机能效。但该方案轴承式气缸结构及相关参数设计不合理，容易导致压缩机压缩能效差，甚至出现异常磨损等情况。A compressor is proposed in the related art. By adopting a bearing-type cylinder, it is ensured that the relative sliding between the head of the slide vane and the inner wall of the inner ring is converted into a rolling motion between the inner ring and the rolling elements, thereby reducing the mechanical power consumption of the compressor and improving the performance of the compressor. efficiency. However, the unreasonable design of the bearing cylinder structure and related parameters of this scheme may easily lead to poor compression energy efficiency of the compressor and even abnormal wear and tear.
发明内容Contents of the invention
因此，本公开要解决的技术问题在于提供一种用于压缩机的轴承式气缸、压缩机和空调器，能够有效降低轴承式气缸的异常磨损，提高压缩机的压缩能效。Therefore, the technical problem to be solved in the present disclosure is to provide a bearing cylinder for a compressor, a compressor and an air conditioner, which can effectively reduce the abnormal wear of the bearing cylinder and improve the compression energy efficiency of the compressor.
为了解决上述问题，本公开提供一种轴承式气缸，包括外圈、滚动体和内圈，滚动体能够转动地设置在外圈和内圈之间，外圈沿轴向贯通设置有螺钉避让孔、压缩介质流道和润滑油流道，润滑油流道被配置为向外圈和内圈之间的腔室输送润滑油。In order to solve the above problems, the present disclosure provides a bearing-type cylinder, which includes an outer ring, a rolling body and an inner ring, the rolling body is rotatably arranged between the outer ring and the inner ring, and the outer ring is axially provided with a screw avoidance hole, A compression medium flow passage and a lubricating oil passage configured to deliver lubricating oil to a cavity between the outer ring and the inner ring.
在一些实施例中，外圈的内径为D1，内圈的外径为D2，D1-D2≥2mm。In some embodiments, the inner diameter of the outer ring is D1, the outer diameter of the inner ring is D2, and D1-D2≥2mm.
在一些实施例中，内圈的径向厚度L≥2mm。In some embodiments, the radial thickness L of the inner ring is ≥ 2mm.
在一些实施例中，滚动体的轴向总高度为h，外圈的轴向高度为H，h≥ H/4。In some embodiments, the total axial height of the rolling elements is h, the axial height of the outer ring is H, and h≥H/4.
在一些实施例中，内圈的轴向高度小于外圈的轴向高度。In some embodiments, the axial height of the inner ring is less than the axial height of the outer ring.
在一些实施例中，轴承式气缸为内、外圈一体式结构，外圈和内圈在两端的高度差一致，其中单边高度差为Δh1，0.01≤Δh1≤0.03mm。In some embodiments, the bearing cylinder has an integrated structure of the inner and outer rings, and the height difference between the outer ring and the inner ring at both ends is the same, wherein the height difference on one side is Δh1, 0.01≤Δh1≤0.03mm.
在一些实施例中，轴承式气缸的外圈和内圈为可拆卸分离结构，外圈和内圈的总高度差Δh2＝H1-H2，0.015mm≤Δh2≤0.05mm。In some embodiments, the outer ring and the inner ring of the bearing cylinder are detachable and separated structures, and the total height difference between the outer ring and the inner ring is Δh2=H1-H2, 0.015mm≤Δh2≤0.05mm.
在一些实施例中，润滑油流道的数量为至少一个，单个润滑油流道的流通面积S≥3mm 2。 In some embodiments, there is at least one lubricating oil flow channel, and the flow area S of a single lubricating oil flow channel is ≥ 3 mm 2 .
根据本公开的另一方面，提供了一种压缩机，包括上述的用于压缩机的轴承式气缸。According to another aspect of the present disclosure, a compressor is provided, including the above-mentioned bearing cylinder for a compressor.
在一些实施例中，压缩机的容积为V，单位为mm 3，外圈的轴向高度为H1，单位为mm，1.9mm 2≤V/(1000*H1)≤3.8mm 2。 In some embodiments, the volume of the compressor is V, the unit is mm 3 , the axial height of the outer ring is H1, the unit is mm, and 1.9mm 2 ≤V/(1000*H1)≤3.8mm 2 .
在一些实施例中，2.2mm 2≤V/(1000*H1)≤3.0mm 2。 In some embodiments, 2.2 mm 2 ≤ V/(1000*H1) ≤ 3.0 mm 2 .
根据本公开的另一方面，提供了一种空调器，包括上述的用于压缩机的轴承式气缸或压缩机。According to another aspect of the present disclosure, an air conditioner is provided, including the above-mentioned bearing cylinder or compressor for a compressor.
本公开提供的用于压缩机的轴承式气缸，包括外圈、滚动体和内圈，滚动体能够转动地设置在外圈和内圈之间，外圈沿轴向贯通设置有螺钉避让孔、压缩介质流道和润滑油流道，润滑油流道被配置为向外圈和内圈之间的腔室输送润滑油。该轴承式气缸通过在外圈上设置润滑油流道，能够利用润滑油流道向外圈和内圈之间的滚动体安装腔内输送润滑油，从而能够方便对滚动体进行润滑，降低运动阻力，降低轴承式气缸的异常磨损，同时可以利用润滑油对轴承式气缸进行密封，提高轴承式气缸承载能力，在提高压缩机能效的同时，可以提高压缩机的可靠性。The bearing cylinder used for compressors provided by the present disclosure includes an outer ring, a rolling body and an inner ring. The rolling body is rotatably arranged between the outer ring and the inner ring. A medium flow passage and an oil flow passage, the oil flow passage being configured to deliver oil to a cavity between the outer ring and the inner ring. The bearing-type cylinder is provided with a lubricating oil flow channel on the outer ring, which can use the lubricating oil flow channel to deliver lubricating oil to the rolling element installation cavity between the outer ring and the inner ring, so that the rolling element can be lubricated conveniently and the movement resistance can be reduced. , reduce the abnormal wear of the bearing cylinder, and at the same time, the lubricating oil can be used to seal the bearing cylinder, improve the bearing capacity of the bearing cylinder, and improve the reliability of the compressor while improving the energy efficiency of the compressor.
附图说明Description of drawings
图1为本公开一个实施例的轴承式气缸的结构示意图；Fig. 1 is a schematic structural view of a bearing cylinder according to an embodiment of the present disclosure;
图2为本公开一个实施例的轴承式气缸的剖视结构示意图；2 is a schematic cross-sectional structural view of a bearing cylinder according to an embodiment of the present disclosure;
图3为图2的L处的放大结构示意图；Fig. 3 is a schematic diagram of an enlarged structure at L in Fig. 2;
图4为本公开一个实施例的轴承式气缸的结构尺寸图；Fig. 4 is a structural dimension diagram of a bearing cylinder according to an embodiment of the present disclosure;
图5为本公开一个实施例的轴承式气缸的结构尺寸图；Fig. 5 is a structural dimension diagram of a bearing cylinder according to an embodiment of the present disclosure;
图6为本公开一个实施例的轴承式气缸的滚动体的结构尺寸图；Fig. 6 is a structural dimension diagram of a rolling element of a bearing cylinder according to an embodiment of the present disclosure;
图7为不同V/(1000*H1)下主轴长短轴承承载及压缩机COP曲线图。Fig. 7 is a curve diagram of the bearing load of the main shaft length and short length and the COP of the compressor under different V/(1000*H1).
附图标记表示为：The reference signs are indicated as:
1、外圈；2、滚动体；3、内圈；4、螺钉避让孔；5、压缩介质流道；6、润滑油流道；7、保持架。1. Outer ring; 2. Rolling body; 3. Inner ring; 4. Screw escape hole; 5. Compressed medium flow path; 6. Lubricating oil flow path; 7. Cage.
具体实施方式Detailed ways
结合参见图1至图7所示，根据本公开的实施例，轴承式气缸包括外圈1、滚动体2和内圈3，滚动体2能够转动地设置在外圈1和内圈3之间，外圈1沿轴向贯通设置有螺钉避让孔4、压缩介质流道5和润滑油流道6，润滑油流道6与外圈1和内圈3之间的腔室连通以便将润滑油输送到腔室。1 to 7, according to an embodiment of the present disclosure, a bearing cylinder includes an outer ring 1, a rolling body 2 and an inner ring 3, and the rolling body 2 is rotatably arranged between the outer ring 1 and the inner ring 3, The outer ring 1 is provided with a screw escape hole 4, a compressed medium flow channel 5 and a lubricating oil flow channel 6 in the axial direction. The lubricating oil flow channel 6 communicates with the chamber between the outer ring 1 and the inner ring 3 to transport the lubricating oil. to the chamber.
该轴承式气缸通过在外圈1上设置润滑油流道6，能够利用润滑油流道6向外圈1和内圈3之间的滚动体安装腔内输送润滑油，从而能够方便对滚动体2进行润滑，降低运动阻力，降低轴承式气缸的异常磨损，同时可以利用润滑油对轴承式气缸进行密封，提高轴承式气缸承载能力，在提高压缩机能效的同时，可以提高压缩机的可靠性。The bearing-type cylinder is provided with a lubricating oil flow channel 6 on the outer ring 1, and the lubricating oil flow channel 6 can be used to deliver lubricating oil to the rolling element installation cavity between the outer ring 1 and the inner ring 3, so that the rolling element 2 can be conveniently installed. Lubricate, reduce motion resistance, and reduce abnormal wear of the bearing cylinder. At the same time, lubricating oil can be used to seal the bearing cylinder to improve the bearing capacity of the bearing cylinder. While improving the energy efficiency of the compressor, it can also improve the reliability of the compressor.
在一个实施例中，在润滑油流道6靠近内圈3的一侧设置有油路通道，油路通道连通润滑油流道6以及外圈1和内圈3之间的腔室，从而能够方便将润滑油流道6内的润滑油输送至腔室内，对外圈1和内圈3之间的滚动体2进行润滑。为了保证供油量的合理性，避免润滑油大量进入到外圈1和内圈3之间的腔室，使得油路高压对内圈3造成不利影响，或者是进入到外圈1和内圈3之间的腔室内的润滑油量过少，油路通道的通油面积应该进行合理设计，在一个实施例中，油路通道的通油面积范围为0.03mm 2～0.1mm 2。 In one embodiment, an oil channel is provided on the side of the lubricating oil flow channel 6 close to the inner ring 3, and the oil channel communicates with the lubricating oil flow channel 6 and the chamber between the outer ring 1 and the inner ring 3, thereby enabling It is convenient to transport the lubricating oil in the lubricating oil flow channel 6 to the chamber, and lubricate the rolling element 2 between the outer ring 1 and the inner ring 3 . In order to ensure the rationality of the oil supply, avoid a large amount of lubricating oil entering the chamber between the outer ring 1 and the inner ring 3, so that the high pressure of the oil circuit will adversely affect the inner ring 3, or enter the outer ring 1 and the inner ring If the amount of lubricating oil in the chamber between 3 is too small, the oil passage area of the oil channel should be reasonably designed. In one embodiment, the oil passage area of the oil channel ranges from 0.03mm 2 to 0.1mm 2 .
轴承式气缸还包括保持架7，保持架7设置在外圈1和内圈3之间，滚动体2通过保持架7进行安装。The bearing type cylinder also includes a cage 7, which is arranged between the outer ring 1 and the inner ring 3, and the rolling body 2 is installed through the cage 7.
在一个实施例中，螺钉避让孔4为多个不同尺寸的结构，从而可以满足不同规格螺钉的安装需求。在本实施例中，螺钉避让孔4分为两种尺寸，两种尺寸的螺钉避让孔4在外圈1的周向交替排布。In one embodiment, the screw avoidance holes 4 have multiple structures of different sizes, so as to meet the installation requirements of screws of different specifications. In this embodiment, the screw avoidance holes 4 are divided into two sizes, and the screw avoidance holes 4 of the two sizes are alternately arranged in the circumferential direction of the outer ring 1 .
在一个实施例中，压缩介质流道5同样为多个不同尺寸的结构，可以为圆形，也可以为腰型孔。其中腰型孔更加适用于结构距离不足，但是需要较大流通面积的情况。In one embodiment, the compressed medium channel 5 is also a plurality of structures of different sizes, which may be circular or waist-shaped holes. Among them, the waist hole is more suitable for the situation where the structural distance is insufficient, but a large flow area is required.
润滑油流道6是为了满足轴承式气缸或者其他结构泵体零件润滑油流通需 求，可以为多个不同形状的结构，在本实施例中，润滑油流道6为圆孔。The lubricating oil flow channel 6 is in order to meet the lubricating oil circulation requirements of the bearing type cylinder or other structural pump body parts, and can be a plurality of structures of different shapes. In the present embodiment, the lubricating oil flow channel 6 is a circular hole.
在一个实施例中，润滑油流道6的数量为至少一个，单个润滑油流道6的流通面积S≥3mm 2，从而能够保证润滑油流道6具有足够大的流通面积，减小润滑油的流动阻力，保证润滑油能够充满外圈1和内圈3之前的空间，对滚动体2进行充分润滑，降低滚动体2与外圈1和内圈3之间的摩擦，降低摩擦损耗，同时可以更加充分地利用润滑油实现轴承式气缸的密封。 In one embodiment, the number of lubricating oil flow passages 6 is at least one, and the flow area S of a single lubricating oil flow passage 6 is greater than or equal to 3 mm 2 , thereby ensuring that the lubricating oil flow passage 6 has a sufficiently large flow area and reducing the flow of lubricating oil. The flow resistance ensures that the lubricating oil can fill the space before the outer ring 1 and inner ring 3, fully lubricate the rolling element 2, reduce the friction between the rolling element 2 and the outer ring 1 and inner ring 3, and reduce friction loss. The lubricating oil can be more fully utilized to realize the sealing of the bearing cylinder.
由于滚动体2需要润滑，进油需要从外圈1的端面进油，为了保证对滚动体2的润滑，要求外圈1和内圈3之间的进油通道足够大，在一个实施例中，外圈1的内径为D1，内圈3的外径为D2，D1-D2≥2mm，从而使得润滑油能够更加充分与滚动体2接触，对滚动体2形成有效润滑。Since the rolling element 2 needs to be lubricated, the oil needs to enter the oil from the end face of the outer ring 1. In order to ensure the lubrication of the rolling element 2, the oil inlet passage between the outer ring 1 and the inner ring 3 is required to be large enough. In one embodiment , the inner diameter of the outer ring 1 is D1, the outer diameter of the inner ring 3 is D2, and D1-D2≥2mm, so that the lubricating oil can more fully contact the rolling body 2 and effectively lubricate the rolling body 2.
在一个实施例中，内圈3的径向厚度L≥2mm，使得内圈3的端面具有足够的密封面积，能够形成密封油膜，保证内圈3旋转过程的密封性。在本实施例中，当内圈3倒角时，内圈3的径向厚度L是去除倒角之后的厚度，也即，该内圈3的径向厚度应该是能够形成油膜的端面宽度。In one embodiment, the radial thickness L of the inner ring 3 is greater than or equal to 2mm, so that the end surface of the inner ring 3 has a sufficient sealing area to form a sealing oil film to ensure the tightness of the inner ring 3 during rotation. In this embodiment, when the inner ring 3 is chamfered, the radial thickness L of the inner ring 3 is the thickness after the chamfering is removed, that is, the radial thickness of the inner ring 3 should be the end face width capable of forming an oil film.
在一个实施例中，滚动体2的轴向总高度为h，外圈1的轴向高度为H，h≥H/4。由于轴承式气缸径向受力承载最薄弱的结构为滚动体2，实际承载范围为滚动体2与内外圈接触的距离，为了满足压缩机承载要求，防止内圈3倾斜产生异常磨损，要求滚动体2的轴向总高度h与外圈1的轴向高度H之间关系满足h≥H/4。其中单列球h＝滚动体直径d；双列球h＝2d；圆柱滚子或滚针轴承的h为滚动体2和内外圈的有效接触高度。In one embodiment, the total axial height of the rolling elements 2 is h, the axial height of the outer ring 1 is H, and h≧H/4. Since the weakest structure of the bearing cylinder under radial load is the rolling element 2, the actual bearing range is the contact distance between the rolling element 2 and the inner and outer rings. The relationship between the total axial height h of the body 2 and the axial height H of the outer ring 1 satisfies h≥H/4. Among them, the single-row ball h=the rolling body diameter d; the double-row ball h=2d; the h of the cylindrical roller or needle roller bearing is the effective contact height between the rolling body 2 and the inner and outer rings.
在一个实施例中，内圈3的轴向高度小于外圈1的轴向高度。由于轴承式气缸内圈3需要转动，而外圈1通过螺钉压紧在上法兰和下法兰上，固定设置。为保证内圈3的转动顺畅，同时满足和滚动体空间以及滑片前后腔的密封要求，内圈3的轴向高度需小于外圈1的轴向高度，从而避免内圈3与上法兰或者下法兰发生接触磨损。In one embodiment, the axial height of the inner ring 3 is smaller than the axial height of the outer ring 1 . Because the inner ring 3 of the bearing type cylinder needs to rotate, the outer ring 1 is pressed on the upper flange and the lower flange by screws, and is fixedly arranged. In order to ensure the smooth rotation of the inner ring 3 and meet the sealing requirements of the rolling body space and the front and rear chambers of the slide, the axial height of the inner ring 3 must be smaller than the axial height of the outer ring 1, so as to prevent the inner ring 3 from contacting the upper flange. Or contact wear occurs on the lower flange.
在一个实施例中，轴承式气缸的内、外圈是一体式的，外圈1和内圈3在两端的高度差相同，其中高度差为Δh1，0.01≤Δh1≤0.03mm。In one embodiment, the inner and outer rings of the bearing cylinder are integrated, and the height difference between the outer ring 1 and the inner ring 3 at both ends is the same, wherein the height difference is Δh1, 0.01≤Δh1≤0.03mm.
在一个实施例中，轴承式气缸的外圈1和内圈3为可拆卸分离结构，外圈1和内圈3的总高度差Δh2＝H1-H2，0.015mm≤Δh2≤0.05mm。In one embodiment, the outer ring 1 and the inner ring 3 of the bearing cylinder are detachable and separable structures, and the total height difference between the outer ring 1 and the inner ring 3 is Δh2=H1-H2, 0.015mm≤Δh2≤0.05mm.
根据本公开的实施例，压缩机包括轴承式气缸，该轴承式气缸为上述的轴承式气缸。According to an embodiment of the present disclosure, the compressor includes a bearing cylinder, which is the bearing cylinder described above.
在一个实施例中，压缩机排量越大，其承载越大，而该载荷需要泵体承受， 与轴承式气缸高度相关。为了满足压缩机能效及承载要求，定义压缩机容积为Vmm 3，外圈1的轴向高度为H1mm，要求V与H1之间的关系满足1.9mm 2≤V/(1000*H1)≤3.8mm 2。 In one embodiment, the larger the displacement of the compressor, the greater its load, and the load needs to be borne by the pump body, which is related to the height of the bearing cylinder. In order to meet the energy efficiency and bearing requirements of the compressor, the volume of the compressor is defined as Vmm 3 , the axial height of the outer ring 1 is H1mm, and the relationship between V and H1 is required to satisfy 1.9mm 2 ≤V/(1000*H1)≤3.8mm 2 .
在一个实施例中，2.2mm 2≤V/(1000*H1)≤3.0mm 2。 In one embodiment, 2.2 mm 2 ≤ V/(1000*H1) ≤ 3.0 mm 2 .
压缩机泵体承载靠上、下法兰承受，H1越大，V/(1000*H1)越小，主轴上下承载的跨距越大，上、下法兰(主轴长、短轴)越容易出现异常磨损，因此有下限要求。反之，H1越小，V/(1000*H1)越大，泵体越扁，为保证V值，偏心量会增大，上、下法兰(主轴长、短轴)承载也会增加，同时压缩机能效呈先升后降的趋势，因此增加上限要求。The load of the compressor pump body is borne by the upper and lower flanges. The larger the H1, the smaller the V/(1000*H1), the larger the span of the upper and lower bearings of the main shaft, and the easier it is for the upper and lower flanges (long main shaft, short shaft) Abnormal wear occurs, so there is a lower limit requirement. Conversely, the smaller H1 is, the larger V/(1000*H1) is, and the flatter the pump body is, in order to ensure the V value, the eccentricity will increase, and the load of the upper and lower flanges (main shaft long and short shaft) will also increase, and at the same time The energy efficiency of the compressor shows a trend of rising first and then falling, so the upper limit requirement is increased.
结合参见图7所示，当V/(1000*H1)在上述范围时，主轴长短轴的承载较小，而压缩机的COP较大，因此能够有效保证压缩机运行在最佳工作能效。As shown in Figure 7, when V/(1000*H1) is in the above range, the load on the long and short shafts of the main shaft is small, and the COP of the compressor is large, so it can effectively ensure that the compressor operates at the best energy efficiency.
根据本公开的实施例，空调器包括上述的轴承式气缸或上述的压缩机。According to an embodiment of the present disclosure, an air conditioner includes the above-mentioned bearing cylinder or the above-mentioned compressor.
本领域的技术人员容易理解的是，在不冲突的前提下，上述各有利方式可以自由地组合、叠加。Those skilled in the art can easily understand that, on the premise of no conflict, the above-mentioned advantageous modes can be freely combined and superimposed.
以上仅为本公开的较佳实施例而已，并不用以限制本公开，凡在本公开的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本公开的保护范围之内。以上仅是本公开的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本公开技术原理的前提下，还可以做出若干改进和变型，这些改进和变型也应视为本公开的保护范围。The above are only preferred embodiments of the present disclosure, and are not intended to limit the present disclosure. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present disclosure shall be included in the protection scope of the present disclosure Inside. The above are only preferred implementations of the present disclosure. It should be pointed out that for those of ordinary skill in the art, some improvements and modifications can be made without departing from the technical principles of the present disclosure. These improvements and modifications should also be regarded as the scope of protection of the present disclosure.

Claims (12)

  1. 一种用于压缩机的轴承式气缸，包括外圈(1)、滚动体(2)和内圈(3)，所述滚动体(2)可转动地设置在所述外圈(1)和所述内圈(3)之间，所述外圈(1)沿轴向贯通设置有螺钉避让孔(4)、压缩介质流道(5)和润滑油流道(6)，所述润滑油流道(6)与所述外圈(1)和所述内圈(3)之间的腔室连通，以将润滑油输送到所述腔室。A bearing type cylinder for a compressor, comprising an outer ring (1), a rolling body (2) and an inner ring (3), the rolling body (2) is rotatably arranged on the outer ring (1) and Between the inner rings (3), the outer ring (1) is axially provided with screw avoidance holes (4), compressed medium flow channels (5) and lubricating oil flow channels (6), the lubricating oil The flow channel (6) communicates with the cavity between the outer ring (1) and the inner ring (3) to deliver lubricating oil to the cavity.
  2. 根据权利要求1所述的轴承式气缸，其中所述外圈(1)的内径为D1，所述内圈(3)的外径为D2，D1-D2≥2mm。The bearing cylinder according to claim 1, wherein the inner diameter of the outer ring (1) is D1, the outer diameter of the inner ring (3) is D2, and D1-D2≥2mm.
  3. 根据权利要求1或2所述的轴承式气缸，其中所述内圈(3)的径向厚度L≥2mm。The bearing cylinder according to claim 1 or 2, wherein the radial thickness L of the inner ring (3) is ≥ 2mm.
  4. 根据权利要求1-3中任一项所述的轴承式气缸，其中所述滚动体(2)的轴向总高度为h，所述外圈(1)的轴向高度为H，h≥H/4。The bearing-type cylinder according to any one of claims 1-3, wherein the total axial height of the rolling elements (2) is h, the axial height of the outer ring (1) is H, h≥H /4.
  5. 根据权利要求1-4中任一项所述的轴承式气缸，其中所述内圈(3)的轴向高度小于所述外圈(1)的轴向高度。The bearing cylinder according to any one of claims 1-4, wherein the axial height of the inner ring (3) is smaller than the axial height of the outer ring (1).
  6. 根据权利要求1-5中任一项所述的轴承式气缸，其中所述轴承式气缸的内圈(3)和外圈(1)是一体的，所述外圈(1)和所述内圈(3)在两端的高度差是相同的，其中所述高度差为Δh1，0.01≤Δh1≤0.03mm。The bearing cylinder according to any one of claims 1-5, wherein the inner ring (3) and the outer ring (1) of the bearing cylinder are integrated, and the outer ring (1) and the inner The height difference of the ring (3) at both ends is the same, wherein the height difference is Δh1, 0.01≤Δh1≤0.03mm.
  7. 根据权利要求1-5中任一项所述的轴承式气缸，其中所述轴承式气缸的外圈(1)和内圈(3)是可分离的，所述外圈(1)和所述内圈(3)的总高度差Δh2＝H1-H2，0.015mm≤Δh2≤0.05mm。The bearing cylinder according to any one of claims 1-5, wherein the outer ring (1) and the inner ring (3) of the bearing cylinder are separable, and the outer ring (1) and the The total height difference of the inner ring (3) Δh2=H1-H2, 0.015mm≤Δh2≤0.05mm.
  8. 根据权利要求1-7中任一项所述的轴承式气缸，包括至少一个所述润滑油流道(6)，单个所述润滑油流道(6)的流通面积S≥3mm 2。 The bearing-type cylinder according to any one of claims 1-7, comprising at least one lubricating oil flow channel (6), the flow area S of a single lubricating oil flow channel (6) ≥ 3mm 2 .
  9. 一种压缩机，包括权利要求1至8中任一项所述的用于压缩机的轴承式气缸。A compressor, comprising the bearing-type cylinder for a compressor according to any one of claims 1 to 8.
  10. 根据权利要求9所述的压缩机，其中所述压缩机的容积为Vmm 3，所述外圈(1)的轴向高度为H1mm，1.9mm 2≤V/(1000*H1)≤3.8mm 2。 The compressor according to claim 9, wherein the volume of the compressor is Vmm 3 , the axial height of the outer ring (1) is H1mm, 1.9mm 2 ≤ V/(1000*H1) ≤ 3.8mm 2 .
  11. 根据权利要求10所述的压缩机，其中2.2mm 2≤V/(1000*H1)≤3.0mm 2。 The compressor according to claim 10, wherein 2.2 mm 2 ≤ V/(1000*H1) ≤ 3.0 mm 2 .
  12. 一种空调器，包括权利要求1至8中任一项所述的用于压缩机的轴承式气缸或权利要求9至11中任一项所述的压缩机。An air conditioner, comprising the bearing cylinder for a compressor according to any one of claims 1 to 8 or the compressor according to any one of claims 9 to 11.
PCT/CN2022/108061 2021-10-22 2022-07-27 Bearing cylinder for compressor, compressor and air conditioner WO2023065753A1 (en)

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CN113790157A (en) * 2021-10-22 2021-12-14 珠海格力电器股份有限公司 Bearing cylinder, compressor and air conditioner

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CN113790157A (en) * 2021-10-22 2021-12-14 珠海格力电器股份有限公司 Bearing cylinder, compressor and air conditioner
CN216044419U (en) * 2021-10-22 2022-03-15 珠海格力电器股份有限公司 Bearing cylinder, compressor and air conditioner

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JPH058043U (en) * 1991-07-22 1993-02-02 光洋精工株式会社 Bearing lubricator
JP2005061575A (en) * 2003-08-19 2005-03-10 Nsk Ltd Rolling bearing
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CN207363876U (en) * 2017-09-29 2018-05-15 珠海格力电器股份有限公司 Oil circuit structure of compressor and compressor
CN113790157A (en) * 2021-10-22 2021-12-14 珠海格力电器股份有限公司 Bearing cylinder, compressor and air conditioner
CN216044419U (en) * 2021-10-22 2022-03-15 珠海格力电器股份有限公司 Bearing cylinder, compressor and air conditioner

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