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1. WO2018037469 - SCREW COMPRESSOR AND REFRIGERATION CYCLE DEVICE

Publication Number WO/2018/037469
Publication Date 01.03.2018
International Application No. PCT/JP2016/074443
International Filing Date 23.08.2016
IPC
F04C 29/04 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
29Component parts, details, or accessories, of pumps or pumping installations specially adapted for elastic fluids, not provided for in groups F04C18/-F04C28/193
04Heating; Cooling; Heat insulation
F04C 18/16 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
18Rotary-piston pumps specially adapted for elastic fluids
08of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
12of other than internal-axis type
14with toothed rotary pistons
16with helical teeth, e.g. chevron-shaped, screw type
F04C 18/52 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
18Rotary-piston pumps specially adapted for elastic fluids
48Rotary-piston pumps with non-parallel axes of movement of co-operating members
50the axes being arranged at an angle of 90 degrees
52of intermeshing engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
F04C 29/02 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
29Component parts, details, or accessories, of pumps or pumping installations specially adapted for elastic fluids, not provided for in groups F04C18/-F04C28/193
02Lubrication; Lubricant separation 
CPC
F04C 18/52
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS
18Rotary-piston pumps specially adapted for elastic fluids
48Rotary-piston pumps with non-parallel axes of movement of co-operating members
50the axes being arranged at an angle of 90 degrees
52of intermeshing engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
F04C 2210/26
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS
2210Fluid
26Refrigerants with particular properties, e.g. HFC-134a
F04C 29/0014
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS
29Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
0007Injection of a fluid in the working chamber for sealing, cooling and lubricating
0014with control systems for the injection of the fluid
F04C 29/042
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS
29Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
04Heating; Cooling
042by injecting a fluid
Applicants
  • 三菱電機株式会社 MITSUBISHI ELECTRIC CORPORATION [JP]/[JP]
Inventors
  • 前田 克也 MAEDA, Katsuya
Agents
  • 特許業務法人きさ特許商標事務所 KISA PATENT & TRADEMARK FIRM
Priority Data
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) SCREW COMPRESSOR AND REFRIGERATION CYCLE DEVICE
(FR) COMPRESSEUR À VIS ET DISPOSITIF À CYCLE FRIGORIFIQUE
(JA) スクリュー圧縮機及び冷凍サイクル装置
Abstract
(EN)
A screw compressor equipped with: a casing in which is formed a refrigerant liquid flow path through which a refrigerant liquid passes from the outside; a screw rotor on the outer circumferential surface of which multiple screw grooves forming a compression chamber are formed, and which is arranged so as to rotate inside the casing; and a slide valve that is provided between the casing and the screw rotor, and that slides in the direction of the rotary shaft of the screw rotor. The casing and/or the slide valve are provided with an oil injection port for supplying oil to the screw grooves. The slide valve has a refrigerant liquid injection flow path enabling the refrigerant liquid flow path to communicate with the screw grooves, and moves between a first position, in which the refrigerant liquid injection flow path communicates with the screw grooves from immediately before compression to immediately after compression, and a second position, which is a position in which the refrigerant liquid injection flow path communicates with the screw grooves in an intake stroke before compression begins, and the position of the refrigerant liquid injection flow path in the direction of the rotary shaft is closer to the oil injection port than the first position.
(FR)
L'invention concerne un compresseur à vis qui est pourvu : d'un carter permettant la formation d'un circuit d'écoulement de liquide frigorigène à travers lequel passe un liquide frigorigène en provenance de l'extérieur ; un rotor à vis ayant sur sa face circonférentielle externe de multiples rainures hélicoïdales formant une chambre de compression, et agencé pour tourner à l'intérieur du carter ; un tiroir disposé entre le carter et le rotor à vis et coulissant dans la direction de l'arbre rotatif du rotor à vis. Le carter et/ou le tiroir sont munis d'un orifice d'injection d'huile afin d'alimenter en huile les rainures hélicoïdales. Le tiroir possède un circuit d'écoulement d'injection de liquide frigorigène, qui permet la communication du circuit d'écoulement de liquide frigorigène avec les rainures de vis, et se déplace entre une première position, dans laquelle le circuit d'écoulement d'injection de liquide frigorigène est en communication avec les rainures hélicoïdales depuis le moment juste avant la compression jusqu'au moment juste après la compression, et une seconde position, dans laquelle le circuit d'écoulement d'injection de liquide frigorigène est en communication avec les rainures hélicoïdales pendant une course d'admission avant le début de la compression, et la position du circuit d'écoulement d'injection de liquide frigorigène dans la direction de l'arbre rotatif est plus proche de l'orifice d'injection d'huile que la première position.
(JA)
スクリュー圧縮機は、外部からの冷媒液が通過する冷媒液流路が形成されたケーシングと、圧縮室を構成する複数のスクリュー溝が外周面に形成され、ケーシング内で回転するように配置されたスクリューロータと、ケーシングとスクリューロータとの間に設けられ、スクリューロータの回転軸方向にスライド移動するスライドバルブとを備える。そして、ケーシング又はスライドバルブ又はその両方には、スクリュー溝に油を供給する油インジェクションポートが設けられている。スライドバルブは、冷媒液流路をスクリュー溝に連通させる冷媒液注入流路を有し、冷媒液注入流路を、圧縮開始直前から直後までの間のスクリュー溝に連通させる第1位置と、冷媒液注入流路を、圧縮開始前の吸込行程にあるスクリュー溝にさせる位置であって、第1位置よりも回転軸方向の位置が油インジェクションポートに近づく第2位置とに移動する。
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