EP3572671A1 - Verdichter - Google Patents

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Publication number
EP3572671A1
EP3572671A1 EP19176241.8A EP19176241A EP3572671A1 EP 3572671 A1 EP3572671 A1 EP 3572671A1 EP 19176241 A EP19176241 A EP 19176241A EP 3572671 A1 EP3572671 A1 EP 3572671A1
Authority
EP
European Patent Office
Prior art keywords
refrigerant
check valve
injection port
compressor
retainer
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.)
Withdrawn
Application number
EP19176241.8A
Other languages
English (en)
French (fr)
Inventor
Youhei Hotta
Hajime Sato
Yoshiaki Miyamoto
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.)
Mitsubishi Heavy Industries Thermal Systems Ltd
Original Assignee
Mitsubishi Heavy Industries Thermal Systems Ltd
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 Mitsubishi Heavy Industries Thermal Systems Ltd filed Critical Mitsubishi Heavy Industries Thermal Systems Ltd
Publication of EP3572671A1 publication Critical patent/EP3572671A1/de
Withdrawn legal-status Critical Current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
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
    • F04C18/0215—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
    • F04C18/0246—Details concerning the involute wraps or their base, e.g. geometry
    • F04C18/0253—Details concerning the base
    • F04C18/0261—Details of the ports, e.g. location, number, geometry
    • 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
    • F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
    • F04C28/24—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves
    • 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

Definitions

  • the present invention relates to a compressor.
  • a two-stage compression refrigeration cycle in which a refrigerant is compressed in two stages is sometimes used to improve performance of a heat pump and improve the coefficient of performance (COP).
  • an economizer gas-liquid separator
  • Such a refrigeration cycle is also referred to as a gas injection cycle or an economizer cycle.
  • JP 11-107949 A discloses that an injection port penetrating an end plate of a fixed scroll is provided, and a check-valve chamber is provided in a connection portion connecting the injection port and an injection pipe. A check valve that opens and closes the outlet of the injection pipe is provided in the check-valve chamber.
  • JP 11-107949 A describes that in the check-valve chamber, the injection port formed in the fixed scroll is shifted by ⁇ H to the tip end edge side of the check valve (lead valve) from the outlet (introduction port) of the injection pipe. Hence, the injection gas that pushes open the tip end of the lead valve and flows into the check-valve chamber from the introduction port flows toward the injection port while escaping to the tip end edge side of the lead valve.
  • JP 11-107949 A describes that in a horizontal compressor, the injection port is formed in a lowermost part of the check-valve chamber in consideration of the flow of the lubricating oil, and merely discloses that the injection port is formed on the tip end edge side of the check valve.
  • the present invention has been made in view of the foregoing, and aims to provide a compressor that can reduce pressure loss near a check valve by focusing on the layout of the outlet of an injection pipe and an injection port of a fixed scroll.
  • a compressor of the present invention adopts the following solutions.
  • a compressor of the present invention includes: a housing; a scroll type mechanical compression unit accommodated in the housing and having a fixed scroll; a discharge cover accommodated in the housing and installed on a side of the mechanical compression unit on which a refrigerant is discharged; and an injection pipe having one end connected to the discharge cover and through which a refrigerant introduced into a compression chamber of the mechanical compression unit flows.
  • An injection port that introduces the refrigerant passing through the injection pipe into the compression chamber of the mechanical compression unit is formed in the fixed scroll.
  • a check valve that is capable of opening and closing an outlet of the injection pipe on a tip end side of the check valve and prevents backflow of the refrigerant supplied from the injection pipe is installed.
  • the injection port of the fixed scroll is formed closer to a fixing point of the check valve than to a tip end of the check valve.
  • one end of the injection pipe is connected to the discharge cover, and the refrigerant flows through the injection pipe and is introduced into the compression chamber of the mechanical compression unit through the injection port formed in the fixed scroll.
  • the check valve is capable of opening and closing the outlet of the injection pipe on the tip end side of the check valve and prevents backflow of the refrigerant supplied from the injection pipe.
  • the injection port of the fixed scroll is formed closer to the fixing point of the check valve than to the tip end of the check valve. Accordingly, since the refrigerant injected from the injection pipe flows into the wide space between the check valve and the injection port, the refrigerant is guided to the injection port without increase in pressure loss.
  • the above invention may further include a cover member installed between the discharge cover and the fixed scroll.
  • the cover member may have a refrigerant passage penetrating a first face on the discharge cover side and a second face on the fixed scroll side, and through which the refrigerant supplied from the injection pipe flows.
  • the check valve may be installed in the cover member so as to be capable of opening and closing the refrigerant passage, and prevent backflow of the refrigerant passing through the refrigerant passage.
  • the injection port may be formed within a projection range of an area of the check valve lifted by a lift amount equal to or lower than 95% when the check valve is lifted by the maximum lift amount.
  • the above invention may further include a long retainer that limits opening of the check valve.
  • the injection port may be formed within a maximum width of the retainer perpendicular to a longitudinal direction of the retainer.
  • the injection port may be formed within a projection range when the retainer is projected on the fixed scroll.
  • a width of an intermediate portion in the longitudinal direction of the retainer may be narrower than the maximum width of the retainer, and the injection port may be formed in a position corresponding to the intermediate portion of the retainer.
  • an edge portion of the injection port may be tapered.
  • the check valve may be fixed with a bolt, and a recess that accommodates a head of the bolt may be formed in the fixed scroll.
  • pressure loss near a check valve can be further reduced by focusing on the layout of the outlet of an injection pipe and an injection port of a fixed scroll.
  • a refrigeration cycle 10 includes components such as a scroll compressor 1 that compresses a refrigerant (fluid), a condenser 2 that dissipates heat of the compressed refrigerant to the outside, a first expansion valve 3 provided on the high-pressure side for decompression of the refrigerant flowing out of the condenser 2, an economizer (gas-liquid separator) 4 that separates the decompressed refrigerant into a liquid refrigerant and a gas refrigerant, a second expansion valve 5 provided on the low-pressure side for further decompression of the liquid refrigerant, an evaporator 6 that causes the decompressed refrigerant to absorb heat, and an injection passage 7 that guides the gas refrigerant from the economizer 4 to the scroll compressor 1.
  • a scroll compressor 1 that compresses a refrigerant (fluid)
  • a condenser 2 that dissipates heat of the compressed refrigerant to the outside
  • a first expansion valve 3
  • the scroll compressor 1 is a closed compressor, and as shown in Fig. 2 , is mainly configured of a housing 11 that has a closed space formed therein, a scroll type mechanical compression unit 12 that is accommodated in the housing 11 and compresses a refrigerant taken into the closed space, a rotating shaft 13 that transmits rotary force to the scroll type mechanical compression unit 12, and an electric motor that makes a rotating scroll 19 of the scroll type mechanical compression unit 12 orbit through the rotating shaft 13.
  • a bottom portion of the housing 11 is closed with a lower cover, and the housing 11 includes a vertically long cylindrical middle cover 14 above the lower cover.
  • a discharge cover 15 and an upper cover 16 are provided above the middle cover 14 to close the housing 11.
  • a discharge chamber 17 into which compressed high-pressure gas is discharged is formed between the discharge cover 15 and the upper cover 16.
  • the scroll type mechanical compression unit 12 is incorporated in the housing 11, and the electric motor formed of a stator and a rotor is installed below the scroll type mechanical compression unit 12.
  • the electric motor is incorporated by fixing the stator to the housing 11, and the rotating shaft 13 is fixed to the rotor.
  • the scroll type mechanical compression unit 12 includes components such as a fixed scroll 18 fixed to the housing 11, and the rotating scroll 19 slidably supported and meshed with the fixed scroll 18 to form a compression chamber 20.
  • a suction port 28 for sucking in a refrigerant is formed on a side face of the housing 11 so as to communicate into the closed space, and a discharge port 16a for discharging a compressed refrigerant gas is formed on the top side of the upper cover 16 so as to communicate with the discharge chamber 17.
  • the scroll type mechanical compression unit 12 sucks in the refrigerant gas, which is sucked into the housing 11 through suction piping and the suction port 28, into the compression chamber 20 through an external suction port 21 open to the inside of the housing 11, and compresses the refrigerant gas.
  • the compressed refrigerant gas is discharged into the discharge chamber 17 through a discharge port 22 provided in a center portion of the fixed scroll 18, a refrigerant passage 30 provided in a block member 29, and a discharge port 23 provided in the discharge cover 15, and is further transmitted to the outside of the compressor through a discharge pipe 24 provided in the upper cover 16 and communicating with the discharge chamber 17.
  • an injection pipe 25 that introduces an intermediate-pressure refrigerant into the compression chamber 20 of the scroll type mechanical compression unit 12 from outside is connected to the discharge cover 15.
  • the injection pipe 25 penetrates the upper cover 16.
  • the refrigerant is supplied to the compression chamber 20 through the injection pipe 25, a refrigerant passage 31 provided in the discharge cover 15, a refrigerant passage 32 provided in the block member 29, and an injection port 26 provided in the fixed scroll 18.
  • a lead valve 27 is a thin plate-like member, is provided in an outlet portion of the discharge port 22, and opens and closes the discharge port 22.
  • the lead valve 27 allows the refrigerant to flow only in one direction. Since the lead valve 27 is provided, the refrigerant flows to the discharge chamber 17 side from the compression chamber 20.
  • a retainer 33 that limits the movable range (opening upper limit) of the lead valve 27 is provided in the movable direction of the lead valve 27.
  • the lead valve 27 hits the retainer 33 when the lead valve 27 opens, whereby the retainer 33 can keep the lead valve 27 from opening too wide.
  • the retainer 33 is a member with high rigidity that is less likely to deform.
  • the lead valve 27 is a member long in one direction, and has an arcuate end portion, for example.
  • One end side of the lead valve 27 is fixed to the fixed scroll 18 with a bolt 34 (see Fig. 3 ), and the other end side of the lead valve 27 is capable of opening and closing the discharge port 22.
  • the retainer 33 is also a member long in one direction, and has one end side fixed together with the lead valve 27 with the bolt 34.
  • the fixed scroll 18 includes a substantially disk-shaped end plate 18a, and a scroll wall body 18b installed in a standing manner on one side face of the end plate 18a.
  • the rotating scroll 19 includes a substantially disk-shaped end plate 19a, and a scroll wall body 19b installed in a standing manner on one side face of the end plate 19a.
  • the scroll shape of each of the wall bodies 18b, 19b is defined by use of an involute curve or an Archimedean spiral.
  • the fixed scroll 18 has the discharge port 22 and the injection port 26 both penetrating the end plate 18a in the thickness direction.
  • the fixed scroll 18 and the rotating scroll 19 have centers O 1 , O 2 thereof spaced apart by a turning radius p, are meshed by shifting the phases of the wall bodies 18b, 19b by 180 degrees, and are assembled such that a slight clearance (tip clearance) in the height direction is formed between the tooth tip and bottom of the wall bodies 18b, 19b of both scrolls 18, 19 at ordinary temperature.
  • a slight clearance tip clearance
  • multiple pairs of compression chambers 20 surrounded by the end plates 18a, 19a and wall bodies 18b, 19b of both scrolls 18, 19 are formed between both scrolls 18, 19, so as to be symmetrical with respect to the scroll center.
  • the rotating scroll 19 orbits around the fixed scroll 18 by an anti-rotation mechanism such as an Oldham ring.
  • the block member 29 is an example of a cover member, and is installed on a face of the fixed scroll 18 on the discharge cover 15 side with a bolt 35, between the fixed scroll 18 and the discharge cover 15.
  • the refrigerant passage 30, and the refrigerant passage 32 through which the refrigerant from the injection pipe 25 flows are formed in the block member 29.
  • the refrigerant passage 32 penetrates the block member 29 from a face on the discharge cover 15 side to the fixed scroll 18 side.
  • a recessed lead valve chamber 36 is formed on the face of the fixed scroll 18 on the discharge cover 15 side.
  • the refrigerant having flowed through the injection pipe 25 is supplied to the refrigerant passages 31, 32, and then is supplied to the lead valve chamber 36.
  • the lead valve chamber 36 has a side face surrounding a retainer 39, and the injection port 26 is formed in a bottom face inside the lead valve chamber 36. Additionally, the refrigerant passage 32 is formed and a bolt 38 fixing a lead valve 37 and the retainer 39 is fastened on the block member 29 side of the lead valve chamber 36.
  • the fixed scroll 18 has the injection port 26 open in the lead valve chamber 36, and the injection port 26 is formed closer to the bolt 38 fixing the lead valve 37 than to the tip end of the lead valve 37.
  • the lead valve 37 is a thin plate-like member, is provided in an outlet portion of the refrigerant passage 32, and opens and closes the refrigerant passage 32.
  • the lead valve 37 allows the refrigerant to flow only in one direction. Since the lead valve 37 is provided, the refrigerant flows to the side of the compression chamber 20 of the fixed scroll 18 from the injection pipe 25.
  • a retainer 39 that limits the movable range (opening upper limit) of the lead valve 37 is provided in the movable direction of the lead valve 37.
  • the lead valve 37 hits the retainer 39 when the lead valve 37 opens, whereby the retainer 39 can keep the lead valve 37 from opening too wide.
  • the retainer 39 is a member with high rigidity that is less likely to deform.
  • the lead valve 37 is a member long in one direction, and has an arcuate end portion, for example.
  • One end side of the lead valve 37 is fixed to the block member 29 with the bolt 38, and the other end side of the lead valve 37 is capable of opening and closing the refrigerant passage 32.
  • the retainer 39 is also a member long in one direction, and has one end side fixed together with the lead valve 37 with the bolt 38.
  • one end of the injection pipe 25 is connected to the discharge cover 15.
  • the refrigerant is introduced into the compression chamber 20 in the middle of a compression process, the refrigerant is supplied to the refrigerant passages 31, 32 through the injection pipe 25, and then is supplied to the lead valve chamber 36. Then, the refrigerant gas is introduced into the compression chamber 20 of the scroll type mechanical compression unit 12 through the injection port 26 formed in the fixed scroll 18.
  • the lead valve 37 is capable of opening and closing the refrigerant passage 32, which is the outlet of the injection pipe, on the tip end side of the lead valve 37, and prevents backflow of the refrigerant supplied from the injection pipe 25.
  • the injection port 26 of the fixed scroll 18 is formed closer to the fixing point of the lead valve 37 than to the tip end of the lead valve 37. Accordingly, since the refrigerant injected from the injection pipe 25 flows into the wide space between the lead valve 37 and the injection port 26, the refrigerant is guided to the injection port 26 without increase in pressure loss.
  • the injection port 26 should not be formed within a projection range of the area of the lead valve 37 lifted by a lift amount higher than 95% and equal to or lower than 100% when the lead valve 37 is lifted by the maximum lift amount. That is, the injection port 26 is preferably formed within a projection range of the area of the lead valve 37 lifted by a lift amount equal to or lower than 95% when the lead valve 37 is lifted by the maximum lift amount. As a result, the injection port 26 is formed in a position away from the check valve.
  • the injection port 26 is preferably formed within the maximum width of the retainer 39 perpendicular to the longitudinal direction of the retainer 39.
  • the injection port 26 is more preferably formed within a projection range when the retainer 39 is projected on the fixed scroll 18. With this, the injection port 26 is formed within a range where the injection port 26 is not far from the outlet of the refrigerant passage 32, whereby the volume of the lead valve chamber 36 can be reduced.
  • a retainer 39 whose width of an intermediate portion in the longitudinal direction is narrower than the maximum width of the retainer 39 may be applied as the retainer 39.
  • the area of a passage inside the lead valve chamber 36 is increased, and the refrigerant from the refrigerant passage 32 can more easily pass a side end portion of the retainer 39, so that pressure loss can be reduced.
  • the injection port 26 is preferably formed in a position corresponding to the intermediate portion of the retainer 39. With this, the injection port 26 is formed within a range where the injection port 26 is not far from the outlet of the refrigerant passage 32.
  • an edge portion of an inlet portion of the injection port 26 may be tapered. As a result, even when the injection port 26 is provided directly below the bolt 38, the large inlet area of the injection port 26 can reduce pressure loss. Instead, as shown in Fig. 7 , a recess may be formed in a part where the head of the bolt 38 is installed. In this case, too, pressure loss inside the lead valve chamber 36 can be reduced.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Rotary Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
EP19176241.8A 2018-05-25 2019-05-23 Verdichter Withdrawn EP3572671A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2018100506A JP2019203475A (ja) 2018-05-25 2018-05-25 圧縮機

Publications (1)

Publication Number Publication Date
EP3572671A1 true EP3572671A1 (de) 2019-11-27

Family

ID=66647145

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19176241.8A Withdrawn EP3572671A1 (de) 2018-05-25 2019-05-23 Verdichter

Country Status (2)

Country Link
EP (1) EP3572671A1 (de)
JP (1) JP2019203475A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11384759B2 (en) * 2020-03-10 2022-07-12 Hanon Systems Vapor injection double reed valve plate
CN115053068A (zh) * 2020-02-03 2022-09-13 松下知识产权经营株式会社 带注入机构的压缩机
CN115176087A (zh) * 2020-03-23 2022-10-11 翰昂汽车零部件有限公司 涡旋压缩机

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11107949A (ja) 1997-10-06 1999-04-20 Matsushita Electric Ind Co Ltd スクロール圧縮機
JPH11107945A (ja) * 1997-10-06 1999-04-20 Matsushita Electric Ind Co Ltd スクロール圧縮機
EP2280172A1 (de) * 2008-05-30 2011-02-02 Mitsubishi Heavy Industries, Ltd. Kühlkompressor und ventileinheit dafür
JP2015014195A (ja) * 2013-07-03 2015-01-22 日立アプライアンス株式会社 冷凍サイクル
JP2016011620A (ja) * 2014-06-27 2016-01-21 三菱電機株式会社 スクロール圧縮機
DE112014005129T5 (de) * 2013-11-08 2016-07-28 Denso Corporation Kompressor und Kälteerzeugungskreiseinrichtung
WO2017141342A1 (ja) * 2016-02-16 2017-08-24 三菱電機株式会社 スクロール圧縮機
WO2019163628A1 (ja) * 2018-02-21 2019-08-29 三菱重工サーマルシステムズ株式会社 スクロール流体機械

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11107949A (ja) 1997-10-06 1999-04-20 Matsushita Electric Ind Co Ltd スクロール圧縮機
JPH11107945A (ja) * 1997-10-06 1999-04-20 Matsushita Electric Ind Co Ltd スクロール圧縮機
EP2280172A1 (de) * 2008-05-30 2011-02-02 Mitsubishi Heavy Industries, Ltd. Kühlkompressor und ventileinheit dafür
JP2015014195A (ja) * 2013-07-03 2015-01-22 日立アプライアンス株式会社 冷凍サイクル
DE112014005129T5 (de) * 2013-11-08 2016-07-28 Denso Corporation Kompressor und Kälteerzeugungskreiseinrichtung
JP2016011620A (ja) * 2014-06-27 2016-01-21 三菱電機株式会社 スクロール圧縮機
WO2017141342A1 (ja) * 2016-02-16 2017-08-24 三菱電機株式会社 スクロール圧縮機
WO2019163628A1 (ja) * 2018-02-21 2019-08-29 三菱重工サーマルシステムズ株式会社 スクロール流体機械

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115053068A (zh) * 2020-02-03 2022-09-13 松下知识产权经营株式会社 带注入机构的压缩机
US20230066647A1 (en) * 2020-02-03 2023-03-02 Panasonic Intellectual Property Management Co., Ltd. Compressor with injection mechanism
US12038008B2 (en) * 2020-02-03 2024-07-16 Panasonic Intellectual Property Management Co., Ltd. Compressor with injection mechanism
CN115053068B (zh) * 2020-02-03 2024-08-13 松下知识产权经营株式会社 带注入机构的压缩机
US11384759B2 (en) * 2020-03-10 2022-07-12 Hanon Systems Vapor injection double reed valve plate
CN115151728A (zh) * 2020-03-10 2022-10-04 翰昂汽车零部件有限公司 蒸气注射双簧片阀
CN115176087A (zh) * 2020-03-23 2022-10-11 翰昂汽车零部件有限公司 涡旋压缩机
CN115176087B (zh) * 2020-03-23 2024-06-11 翰昂汽车零部件有限公司 涡旋压缩机

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