US20250354544A1 - Compressor - Google Patents

Compressor

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Publication number
US20250354544A1
US20250354544A1 US18/860,405 US202318860405A US2025354544A1 US 20250354544 A1 US20250354544 A1 US 20250354544A1 US 202318860405 A US202318860405 A US 202318860405A US 2025354544 A1 US2025354544 A1 US 2025354544A1
Authority
US
United States
Prior art keywords
contactable region
compressor
damping device
housing
region
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
US18/860,405
Other languages
English (en)
Inventor
Haibo Hao
Weixian Guan
Peng Wang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dometic Sweden AB
Original Assignee
Dometic Sweden AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dometic Sweden AB filed Critical Dometic Sweden AB
Publication of US20250354544A1 publication Critical patent/US20250354544A1/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/0027—Pulsation and noise damping means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/0027—Pulsation and noise damping means
    • F04B39/0044—Pulsation and noise damping means with vibration damping supports
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/02—Lubrication
    • F04B39/0223—Lubrication characterised by the compressor type
    • F04B39/023—Hermetic compressors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/121—Casings

Definitions

  • the present embodiments relate to a compressor and, more particularly, to a linear compressor for compressing a refrigerant by a linear reciprocating motion of a piston.
  • a compressor is a device that receives power from a power generating device such as a motor or turbine and compresses a working fluid such as air or a refrigerant.
  • Compressors have been widely used throughout the industry or in household appliances, especially in vapor compression refrigeration cycles.
  • the driving unit in order to avoid vertical vibration of a driving unit in the compressor, the driving unit is typically connected at its bottom side to the bottom of a housing via a spring element for suppressing the vibration.
  • a damping device is typically provided to prevent the driving unit from coming into contact with the top of the housing during this connection.
  • the spring element for suppressing the vertical vibration of the driving unit cannot suppress the deflection of the driving unit.
  • the spring element in the case of a refrigerant compressor having a variable rotational speed or a refrigerant compressor having a constant but lower speed, the spring element must be designed in a relatively soft manner due to the low rotational speed occurring during operation, but this in turn leads to a greater deflection of the driving unit.
  • the driving unit which provides a rotational movement will cause a tendency of movement of an internal unit in a rotational direction when the vehicle starts and stops, resulting in a constant impact of the damping device arranged on the driving unit against the housing, and undesired noise.
  • the compressor according to the present embodiments is considered to prevent or at least minimize the formation of destructive noise or internal unit damage due to a deflection of a driving unit in relation to acceleration, deceleration and inclination of a vehicle on which the compressor is mounted, and the problem of undesired noise resulting from an impact of a damping device arranged on the driving unit of the compressor against a housing.
  • the main idea of the present embodiments is to provide a further improved damping device, and in this regard, in particular to prevent the deflection of the driving unit and to prevent the generation of undesired noise due to the rotational tendency of the compressor.
  • the present embodiments provide a compressor comprising a hermetically sealed housing and a driving unit arranged inside the housing,
  • a distance is maintained between the first contactable region of the damping device and the second contactable region of the housing.
  • the first contactable region of the damping device will be in contact with a corresponding region in the second contactable region of the housing when the vehicle on which the compressor is mounted is accelerated, decelerated or in a driving state on a slope, or otherwise causes the driving unit to deviate from its basic state, thereby suppressing and limiting the deflection of the driving unit.
  • “match” means that the surface form of the first contactable region of the damping device and the surface form of the associated second contactable region of the housing are the same. There is therefore at least one form-fit state between the first contactable region of the damping device and the second contactable region of the housing. For example, if the first contactable region of the damping device has a planar surface form, the associated second contactable region of the housing also has a planar surface form. Alternatively, in another example, if the surface form of the first contactable region of the damping device has a curvature, the surface form of the associated second contactable region of the housing has the same curvature. In general, the first contactable region of the damping device and the associated second contactable region of the housing are parallel to each other in the basic state of the driving unit.
  • the compressor is a linear compressor.
  • the arrangement according to the present embodiments avoids the generation of undesired noise due to the rotational tendency of the compressor during start/stop of the driving unit and when the rotational speed changes, in which this effect arises in particular from the arrangement of the circular arc-shaped circumferential contactable region of the first contactable region of the damping device.
  • the circular arc-shaped circumferential contactable region enables the driving unit to have a greater freedom of movement, i.e., a greater freedom of rotational movement (especially rotation in a horizontal plane), without touching the housing.
  • the shape of the first contactable region of the damping device is the shape of one eighth of a spherical surface.
  • the first contactable region of the damping device comprises at least a circular arc-shaped circumferential contactable region and a flat top surface contactable region.
  • the shape of the first contactable region of the damping device is a shape obtained by further flattening an upper surface on the basis of the shape of one eighth of the spherical surface.
  • the circular arc-shaped circumferential contactable region tapers uniformly toward the flat top surface contactable region. This means that all cross sections of the damping device in the vertical direction are continuously differentiable, with no steps or bends or changed edges.
  • the circular arc-shaped circumferential contactable region of the first contactable region of the damping device transitions to the flat top surface contactable region through a rounded structure.
  • the contact area can be increased when the first contactable region of the damping device and the corresponding region in the second contactable region of the housing are in contact with each other, and the contact region can be continuously changed with the changes in vibration, displacement and deflection, thereby improving the effect of suppressing and limiting the deflection of the driving unit and reducing the possibility of generating noise and damage due to the deflection of the driving unit.
  • the housing in the second contactable region is conformed to the shape of the first contactable region of the damping device by deformation.
  • This deformation keeps the thickness of the housing substantially constant, whereby the inner surface and the outer surface of the second contactable region are substantially parallel to each other.
  • the thickness may be reduced due to the deformation, in particular in regions with high curvature, but this is still understood that according to the present embodiments, the thickness of the housing remains substantially the same before and after the deformation.
  • the second contactable region of the housing of the present embodiments has a generally recessed form with respect to the other parts.
  • the housing is manufactured from a metal sheet by deep drawing or hydroforming.
  • the damping device has damping characteristics, and preferably comprises or is made of a polymer material.
  • the polymer material is understood to include materials having elasticity and damping properties, such as plastics, elastomers and rubbers produced from natural and/or synthetic materials.
  • the compressor has at least four damping devices.
  • the four damping devices are arranged at four end corners of the compressor, whereby each of the damping devices spans an angle of approximately 90 degrees in a circumferential direction. Based on this arrangement, the deflection of the compressor in any direction can be taken into account.
  • FIG. 1 is a top view of a compressor of an embodiment, with an upper housing not shown;
  • FIG. 2 is a perspective view of the compressor of an embodiment shown in FIG. 1 . with the upper housing not shown;
  • FIG. 3 is a perspective view of the compressor of an embodiment shown in FIG. 1 . showing the upper housing:
  • FIG. 4 is a top view of a compressor of a further embodiment, with an upper housing not shown;
  • FIG. 5 is a perspective view of the compressor of the further embodiment shown in FIG. 4 , with the upper housing not shown;
  • FIG. 6 is a perspective view of the compressor of the preferred embodiment shown in FIG. 4 , showing the upper housing;
  • FIG. 7 is a top view of a compressor of a still further embodiment, with an upper housing not shown;
  • FIG. 8 is a perspective view of the compressor of the still further embodiment shown in FIG. 7 , with the upper housing not shown;
  • FIG. 10 is an enlarged partial cross-sectional view of a damping device and the housing of the compressor at a first contactable region and a second contactable region in a circumferential direction.
  • the compressor comprises a hermetically sealed housing 1 and a driving unit 2 arranged inside the housing.
  • At least one damping device 3 for suppressing and limiting a deflection of the driving unit 2 is provided inside the housing 1 .
  • the damping device 3 is connected to the driving unit 2 .
  • the damping device 3 has a first contactable region 4 facing and at a distance from an inner surface of the housing 1 .
  • the housing 1 comprises a second contactable region 5 corresponding to the first contactable region 4 of the damping device 3 .
  • the second contactable region 5 comprises an inner surface and an outer surface.
  • the shape of the second contactable region 5 of the housing 1 matches the shape of the first contactable region 4 of the damping device 3 .
  • the shape of the first contactable region 4 of the damping device 3 is the shape of one eighth of a spherical surface, which shape is considered as a uniform circular arc shape as a whole.
  • the first contactable region of the damping device comprises at least a circular arc-shaped circumferential contactable region 6 and a flat top surface contactable region 7 .
  • the circular arc-shaped circumferential contactable region 6 tapers uniformly toward the flat top surface contactable region 7 .
  • the shape of the first contactable region of the damping device is a shape obtained by further flattening an upper surface on the basis of the shape of one eighth of the spherical surface. In this case, this obviously means that all cross sections of the damping device in the vertical direction are continuously differentiable, with no steps or bends or changed edges.
  • the first contactable region of the damping device comprises at least a circular arc-shaped circumferential contactable region 6 and a flat top surface contactable region 7 .
  • the circular arc-shaped circumferential contactable region 6 of the first contactable region of the damping device transitions to the flat top surface contactable region 7 through a rounded structure.
  • the circular arc-shaped circumferential contactable region 6 of the first contactable region of the damping device likewise transitions in a circumferential direction to an adjacent region through a rounded structure.
  • a distance is maintained between the first contactable region 4 of the damping device 3 and the second contactable region 5 of the housing 1 .
  • the first contactable region 4 of the damping device 3 will be in contact with a corresponding region in the second contactable region 5 of the housing when the vehicle on which the compressor is mounted is accelerated, decelerated or in a driving state on a slope, or otherwise causes the driving unit to deviate from its basic state, thereby suppressing and limiting the deflection of the driving unit 2 .
  • the surface form of the first contactable region 4 of the damping device 3 and the surface form of the associated second contactable region 5 of the housing 1 are the same.
  • the associated second contactable region of the housing also has a planar surface form.
  • the surface form of the first contactable region of the damping device has a curvature (see the first contactable region 4 in FIG. 2 and the circular arc-shaped circumferential contactable region 6 shown in FIGS. 5 and 8 )
  • the surface form of the associated second contactable region of the housing has the same curvature.
  • the first contactable region of the damping device and the associated second contactable region of the housing are parallel to each other in the basic state of the driving unit.
  • the compressor has at least four damping devices according to one implementation.
  • the four damping devices are provided at four end corners of a substantially rectangular or square area in which an internal unit of the compressor is located.
  • Each of the damping devices spans an angle of approximately 90 degrees in the circumferential direction. Based on this arrangement, the deflection of the compressor in any direction can be taken into account.
  • FIG. 10 an enlarged partial cross-sectional view of the damping device 3 and the housing of the compressor of the present embodiments at the first contactable region 4 and the second contactable region 5 in the circumferential direction is shown.
  • the compressor is a linear compressor
  • the circular arc-shaped circumferential contactable region 6 of the damping device 3 avoids the generation of undesired noise due to the rotational tendency of the compressor and the impact against the housing caused by the rotation of the driving unit 2 .
  • the circular arc-shaped circumferential contactable region enables the driving unit to have a greater freedom of movement, i.e., a greater freedom of rotational movement (especially rotation in a horizontal plane), without touching the housing.
  • the contact area can be increased when the first contactable region 4 of the damping device 3 and the corresponding region in the second contactable region 5 of the housing 1 are in contact with each other, and the contact region can be continuously changed with the changes in vibration, thereby improving the effect of suppressing and limiting the deflection of the driving unit 2 . reducing the possibility of generating noise and damage due to the deflection of the driving unit 2 , and improving the stability of the driving unit 2 .
  • the housing 1 in the second contactable region 5 is conformed to the shape of the first contactable region 4 of the damping device 3 by deformation.
  • This deformation keeps the thickness of the housing substantially constant, whereby the inner surface and the outer surface of the second contactable region 5 are substantially parallel to each other.
  • the thickness may be reduced due to the deformation, in particular in regions with high curvature, but this is still understood that the thickness of the housing remains substantially the same before and after the deformation.
  • the second contactable region 5 of the housing 1 of the present embodiments has a generally recessed form with respect to the other parts. It is thus ensured that the circular arc-shaped circumferential contactable region 6 of the damping device 3 does not touch the housing 1 during the rotational movement of the driving unit 2 .
  • the housing 1 is manufactured from a metal sheet by deep drawing or hydroforming.
  • the damping device 3 has damping characteristics, and comprises or is made of a polymer material.
  • the polymer material is understood to include any polymer material having elasticity and damping properties, such as plastics, elastomers and rubbers produced from natural and/or synthetic materials.
  • orientations, the position relationships or the shapes indicated by the terms such as “upper”, “lower”, “inner”, “outer”, “above”, “below”, “recess” and “projection” are based on the orientations, the position relationships or the shapes shown in the accompanying drawings, which is only for ease of description and for simplifying the description, rather than indicating or implying that the devices or elements referred to necessarily have a specific orientation structure and operation, and therefore cannot be construed as limiting.
  • first and second are only used to distinguish each other for the purpose of description, and should not be construed as indicating or implying relative importance and sequence.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
US18/860,405 2022-04-28 2023-04-21 Compressor Pending US20250354544A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CN202210493843.4A CN117006016A (zh) 2022-04-28 2022-04-28 压缩机
CN202210493843.4 2022-04-28
PCT/CN2023/089666 WO2023207771A1 (zh) 2022-04-28 2023-04-21 压缩机

Publications (1)

Publication Number Publication Date
US20250354544A1 true US20250354544A1 (en) 2025-11-20

Family

ID=88517676

Family Applications (1)

Application Number Title Priority Date Filing Date
US18/860,405 Pending US20250354544A1 (en) 2022-04-28 2023-04-21 Compressor

Country Status (5)

Country Link
US (1) US20250354544A1 (de)
EP (1) EP4513032A4 (de)
CN (1) CN117006016A (de)
AU (1) AU2023259172A1 (de)
WO (1) WO2023207771A1 (de)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2721028A (en) * 1954-04-05 1955-10-18 Gen Electric Arrangement for reducing case resonance
US2741425A (en) * 1954-04-19 1956-04-10 Gen Electric Compressor bumper arrangement
US3465954A (en) * 1967-08-11 1969-09-09 Lennox Ind Inc Compressor supporting means
US4312627A (en) * 1979-01-31 1982-01-26 Carrier Corporation Suspension and seal system for a refrigeration motor compressor
CN205503391U (zh) * 2016-03-04 2016-08-24 思科普压缩机(天津)有限公司 制冷压缩机
EP3730789B1 (de) * 2019-04-23 2021-06-16 Secop GmbH Kühlkompressor
KR102414137B1 (ko) * 2020-08-20 2022-06-28 엘지전자 주식회사 밀폐형 압축기
CN215452758U (zh) * 2021-07-29 2022-01-07 四川安和精密电子电器股份有限公司 一种阻尼件及线性振动马达
CN217682165U (zh) * 2022-04-28 2022-10-28 多美达瑞典有限公司 压缩机

Also Published As

Publication number Publication date
EP4513032A1 (de) 2025-02-26
AU2023259172A1 (en) 2024-11-28
EP4513032A4 (de) 2026-04-15
CN117006016A (zh) 2023-11-07
WO2023207771A1 (zh) 2023-11-02

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