JP2022083876A - Compressor and freezer - Google Patents

Compressor and freezer Download PDF

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Publication number
JP2022083876A
JP2022083876A JP2020195464A JP2020195464A JP2022083876A JP 2022083876 A JP2022083876 A JP 2022083876A JP 2020195464 A JP2020195464 A JP 2020195464A JP 2020195464 A JP2020195464 A JP 2020195464A JP 2022083876 A JP2022083876 A JP 2022083876A
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Prior art keywords
cylinder
compressor
cylinder chamber
blade
press
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JP7393666B2 (en
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洪一 入川
Koichi Irikawa
ちひろ 遠藤
Chihiro Endo
幸博 稲田
Sachihiro Inada
遼介 和田
Ryosuke Wada
裕也 砂原
Yuya Sunahara
絵夢 加藤
Emu Kato
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Daikin Industries Ltd
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Daikin Industries Ltd
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Priority to EP21209445.2A priority patent/EP4006346B1/en
Priority to ES21209445T priority patent/ES2953284T3/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
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/32—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having both the movement defined in group F04C18/02 and relative reciprocation between the co-operating members
    • F04C18/322—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having both the movement defined in group F04C18/02 and relative reciprocation between the co-operating members with vanes hinged to the outer member and reciprocating with respect to the outer member
    • 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
    • F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • F04C29/124—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps
    • 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
    • F04C2240/80—Other components
    • F04C2240/806—Pipes for fluids; Fittings therefor
    • 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
    • F04C2250/00—Geometry

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

To provide a compressor capable of suppressing deformation of a blade hole.SOLUTION: A compressor is equipped with a cylinder (101), a cylinder chamber (103), a piston (102a) swiveling along an inner peripheral surface (101a) of the cylinder (101), a blade (102b) that partitions the cylinder chamber (103) into a high-pressure sire area (103b) and a low-pressure area (103a) with the piston (102a), a blade hole (104) in which the blade (102b) moves forward/backward, a suction passage (120) that extends from an outer peripheral surface of the cylinder (101) to the inner peripheral surface (101a) of the cylinder (101) and guides a refrigerant to the cylinder chamber (103), and a piping connection member (200) that has a press-in portion (201b) pressed in the suction passage (120) from a diametrical outer side of the cylinder (101). A distance (R2) from a center point (O1) of the cylinder chamber (103) to the press-in portion (201b) is a distance (R1) to an end on the diametrical outer side of the blade hole (104) or more.SELECTED DRAWING: Figure 3

Description

本開示は、圧縮機および冷凍装置に関する。 The present disclosure relates to compressors and refrigeration equipment.

従来、圧縮機としては、シリンダに設けられた吸入通路に接続部材を介して吸入管を取り付けるものがある(例えば、特開平６－２１３１８３号公報(特許文献１)参照)。 Conventionally, as a compressor, there is a compressor in which a suction pipe is attached to a suction passage provided in a cylinder via a connecting member (see, for example, Japanese Patent Application Laid-Open No. 6-213183 (Patent Document 1)).

上記圧縮機では、圧縮機のシリンダに形成された吸入通路に接続部材の一端が圧入固定されている。 In the compressor, one end of the connecting member is press-fitted and fixed to the suction passage formed in the cylinder of the compressor.

特開平６－２１３１８３号公報Japanese Unexamined Patent Publication No. 6-21183

上記圧縮機では、シリンダの吸入通路に圧入される接続部材の圧入部分が押し広げられて、シリンダのブレード穴が変形するという問題がある。このため、上記圧縮機は、ブレードの異常摩耗や焼き付きが生じる。 The compressor has a problem that the press-fitted portion of the connecting member to be press-fitted into the suction passage of the cylinder is expanded and the blade hole of the cylinder is deformed. Therefore, the compressor causes abnormal wear and seizure of the blade.

本開示では、ブレード穴の変形を抑制できる圧縮機およびその圧縮機を備えた冷凍装置を提案する。 The present disclosure proposes a compressor capable of suppressing deformation of a blade hole and a refrigerating apparatus provided with the compressor.

本開示の圧縮機は、
シリンダと、
上記シリンダの内周面で確定されるシリンダ室と、
上記シリンダ室に収容され、上記シリンダの内周面に沿って旋回運動するピストンと、
上記ピストンと共に、上記シリンダ室を高圧側領域と低圧側領域とに区画するブレードと、
上記シリンダに設けられると共に、上記シリンダ室に連通し、上記ブレードが進退するブレード穴と、
上記シリンダの外周面から上記シリンダの内周面まで延び、冷媒を上記シリンダ室へ案内する吸入通路と、
上記シリンダの径方向外側から上記吸入通路に圧入にされる圧入部を有する配管接続部材と
を備え、
上記シリンダ室の中心点から上記圧入部までの距離は、上記ブレード穴の径方向外側の端までの距離以上である。 The compressor of the present disclosure is
Cylinder and
The cylinder chamber determined by the inner peripheral surface of the cylinder and
A piston housed in the cylinder chamber and swiveling along the inner peripheral surface of the cylinder,
Along with the piston, a blade that divides the cylinder chamber into a high-pressure side region and a low-pressure side region,
A blade hole provided in the cylinder, communicating with the cylinder chamber, and advancing and retreating the blade,
A suction passage that extends from the outer peripheral surface of the cylinder to the inner peripheral surface of the cylinder and guides the refrigerant to the cylinder chamber.
A pipe connecting member having a press-fitting portion to be press-fitted into the suction passage from the radial outside of the cylinder is provided.
The distance from the center point of the cylinder chamber to the press-fitting portion is equal to or greater than the distance to the radial outer end of the blade hole.

本開示によれば、シリンダ室の中心点から圧入部までの距離を、ブレード穴の径方向外側の端までの距離以上にすることによって、配管接続部材の圧入部をシリンダの吸入通路に圧入するときのシリンダにおけるブレード穴の変形を抑制できる。 According to the present disclosure, the press-fitting portion of the pipe connecting member is press-fitted into the suction passage of the cylinder by setting the distance from the center point of the cylinder chamber to the press-fitting portion to be equal to or greater than the distance to the radial outer end of the blade hole. Deformation of the blade hole in the cylinder at that time can be suppressed.

また、本開示の１つの態様に係る圧縮機では、
上記吸入通路は上記シリンダ室の上記高圧側領域に連通し、上記配管接続部材からの冷媒が上記吸入通路を介して上記シリンダ室の上記高圧側領域に供給される。 Further, in the compressor according to one aspect of the present disclosure,
The suction passage communicates with the high pressure side region of the cylinder chamber, and the refrigerant from the pipe connecting member is supplied to the high pressure side region of the cylinder chamber via the suction passage.

本開示によれば、例えば、中間圧の冷媒を、吸入通路を介してシリンダ室の高圧側領域に導入することにより、冷凍能力を向上できる。 According to the present disclosure, for example, the refrigerating capacity can be improved by introducing an intermediate pressure refrigerant into the high pressure side region of the cylinder chamber via the suction passage.

また、本開示の１つの態様に係る圧縮機では、
上記吸入通路内に設置され、上記シリンダ室の上記高圧側領域から上記配管接続部材へ向かう冷媒の流れを規制する弁構造を備える。 Further, in the compressor according to one aspect of the present disclosure,
It is installed in the suction passage and includes a valve structure that regulates the flow of the refrigerant from the high pressure side region of the cylinder chamber to the pipe connecting member.

本開示によれば、吸入通路内に設置された弁構造によって、配管接続部材とシリンダ室との間で、シリンダ室の高圧側領域から配管接続部材へ向かう冷媒の流れを規制するので、圧縮機側から吸入通路を介して冷媒が逆流するのを抑制できる。 According to the present disclosure, the valve structure installed in the suction passage regulates the flow of the refrigerant from the high pressure side region of the cylinder chamber to the pipe connecting member between the pipe connecting member and the cylinder chamber, and thus the compressor. It is possible to suppress the backflow of the refrigerant from the side through the suction passage.

また、本開示の１つの態様に係る圧縮機では、
上記シリンダ室の中心点から上記圧入部までの距離と、上記ブレード穴の径方向外側の端までの距離との比Ｒ２／Ｒ１が１．０２以上である。 Further, in the compressor according to one aspect of the present disclosure,
The ratio R2 / R1 of the distance from the center point of the cylinder chamber to the press-fitting portion and the distance to the radial outer end of the blade hole is 1.02 or more.

本開示によれば、配管接続部材の圧入部をシリンダの吸入通路に圧入するとき、シリンダにおけるブレード穴の変形を抑制できる。 According to the present disclosure, when the press-fitting portion of the pipe connecting member is press-fitted into the suction passage of the cylinder, deformation of the blade hole in the cylinder can be suppressed.

また、本開示の１つの態様に係る圧縮機では、
平面視において、上記シリンダ室の内周面の上記ブレード穴に連なる２つの端の中心点と上記シリンダ室の中心点とを通る直線と、上記吸入通路の中心軸とが、鋭角で交差する。 Further, in the compressor according to one aspect of the present disclosure,
In a plan view, the straight line passing through the center points of the two ends of the inner peripheral surface of the cylinder chamber connected to the blade holes and the center point of the cylinder chamber and the central axis of the suction passage intersect at an acute angle.

本開示によれば、配管接続部材の圧入部をシリンダの吸入通路に圧入するときの変形量が多い圧縮機の場合でも、シリンダにおけるブレード穴の変形を抑制できる。 According to the present disclosure, even in the case of a compressor having a large amount of deformation when the press-fitting portion of the pipe connecting member is press-fitted into the suction passage of the cylinder, the deformation of the blade hole in the cylinder can be suppressed.

また、本開示の冷凍装置は、
上記のいずれか１つの圧縮機を備える。 In addition, the refrigeration equipment of the present disclosure is
It is equipped with any one of the above compressors.

本開示によれば、シリンダにおけるブレード穴の変形を抑制してブレードの異常摩耗や焼き付きの発生を抑えることができる圧縮機を用いることによって、信頼性の高い冷凍装置を実現できる。 According to the present disclosure, a highly reliable freezing device can be realized by using a compressor capable of suppressing deformation of a blade hole in a cylinder and suppressing abnormal wear and seizure of the blade.

本開示の第１実施形態の圧縮機を用いた空気調和機の冷媒回路の構成図である。It is a block diagram of the refrigerant circuit of the air conditioner using the compressor of 1st Embodiment of this disclosure. 第１実施形態の圧縮機のシリンダとピストンを含む要部の上面図である。It is a top view of the main part including the cylinder and the piston of the compressor of 1st Embodiment. 第１実施形態のシリンダの断面図である。It is sectional drawing of the cylinder of 1st Embodiment. 第１実施形態の比Ｒ２／Ｒ１と変位量との関係を示すグラフである。It is a graph which shows the relationship between the ratio R2 / R1 of 1st Embodiment, and the displacement amount. 第１実施形態の比Ｒ２／Ｒ１と変位量との関係を示す図である。It is a figure which shows the relationship between the ratio R2 / R1 of 1st Embodiment, and the displacement amount. 比較例の比Ｒ２／Ｒ１と変位量との関係を示す図である。It is a figure which shows the relationship between the ratio R2 / R1 of a comparative example, and the displacement amount.

以下、実施形態を説明する。なお、図面において、同一の参照番号は、同一部分または相当部分を表わすものである。また、長さ、幅、厚さ、深さ等の図面上の寸法は、図面の明瞭化と簡略化のために実際の尺度から適宜変更されており、実際の相対寸法を表してはいない。 Hereinafter, embodiments will be described. In the drawings, the same reference number represents the same part or the corresponding part. In addition, the dimensions on the drawing such as length, width, thickness, and depth are appropriately changed from the actual scale for the purpose of clarifying and simplifying the drawing, and do not represent the actual relative dimensions.

〔第１実施形態〕
図１は本開示の第１実施形態の圧縮機２１を備えた空気調和機の冷媒回路の構成図である。この空気調和機は冷凍装置の一例である。なお、図１において、１３は、室内空気を室内熱交換器１２へ流す室内ファンであり、２８は、外気を室外熱交換器２３に流す室外ファンである。 [First Embodiment]
FIG. 1 is a block diagram of a refrigerant circuit of an air conditioner including the compressor 21 of the first embodiment of the present disclosure. This air conditioner is an example of a refrigerating device. In FIG. 1, 13 is an indoor fan for flowing indoor air to the indoor heat exchanger 12, and 28 is an outdoor fan for flowing outside air to the outdoor heat exchanger 23.

空気調和機は、図１示すように、室内ユニット１と、冷媒回路ＲＣの一部を介して接続された室外ユニット２とを備えている。室内ユニット１は、室内熱交換器１２、室内ファン１３などを有する。一方、室外ユニット２は、室外熱交換器２３、室外ファン２８などを有する。また、冷媒回路ＲＣでは、充填された冷媒が循環することで冷凍サイクルが行われる。冷媒回路ＲＣには、圧縮機２１、四路切換弁２２、室外熱交換器２３、室外膨張弁２４、気液分離器２５、室内膨張弁１１、および室内熱交換器１２が環状に接続されている。四路切換弁２２の第１ポートＰ１は、吐出管Ｌ１を介して圧縮機２１の吐出側に接続されている。四路切換弁２２の第２ポートＰ２は、吸入管Ｌ４を介して圧縮機２１の第１吸入ポート１１０(図２,図３に示す)に接続されている。四路切換弁２２の第３ポートＰ３は、室外熱交換器２３の一端に接続されている。四路切換弁２２の第４ポートＰ４は、室内熱交換器１２の一端に接続されている。 As shown in FIG. 1, the air conditioner includes an indoor unit 1 and an outdoor unit 2 connected via a part of a refrigerant circuit RC. The indoor unit 1 has an indoor heat exchanger 12, an indoor fan 13, and the like. On the other hand, the outdoor unit 2 has an outdoor heat exchanger 23, an outdoor fan 28, and the like. Further, in the refrigerant circuit RC, the refrigeration cycle is performed by circulating the filled refrigerant. A compressor 21, a four-way switching valve 22, an outdoor heat exchanger 23, an outdoor expansion valve 24, a gas-liquid separator 25, an indoor expansion valve 11, and an indoor heat exchanger 12 are connected to the refrigerant circuit RC in an annular shape. There is. The first port P1 of the four-way switching valve 22 is connected to the discharge side of the compressor 21 via the discharge pipe L1. The second port P2 of the four-way switching valve 22 is connected to the first suction port 110 (shown in FIGS. 2 and 3) of the compressor 21 via the suction pipe L4. The third port P3 of the four-way switching valve 22 is connected to one end of the outdoor heat exchanger 23. The fourth port P4 of the four-way switching valve 22 is connected to one end of the indoor heat exchanger 12.

気液分離器２５の内部と中間インジェクション配管Ｌ２の一端とが接続され、中間インジェクション配管Ｌ２の他端と中間電磁弁２６の一端とが接続されている。中間電磁弁２６の他端と中間配管Ｌ３の一端とが接続され、中間配管Ｌ３の他端と圧縮機２１の第２吸入ポート１２０(図２,図３に示す)とが接続されている。 The inside of the gas-liquid separator 25 and one end of the intermediate injection pipe L2 are connected, and the other end of the intermediate injection pipe L2 and one end of the intermediate solenoid valve 26 are connected. The other end of the intermediate solenoid valve 26 and one end of the intermediate pipe L3 are connected, and the other end of the intermediate pipe L3 and the second suction port 120 (shown in FIGS. 2 and 3) of the compressor 21 are connected.

中間配管Ｌ３と吸入連通管Ｌ５の一端とが接続され、吸入連通管Ｌ５の他端と圧縮機２１の吸入管Ｌ４とが接続されている。吸入連通管Ｌ５に、開閉弁である吸入電磁弁２７が配設されている。 The intermediate pipe L3 and one end of the suction communication pipe L5 are connected, and the other end of the suction communication pipe L5 and the suction pipe L4 of the compressor 21 are connected. A suction solenoid valve 27, which is an on-off valve, is arranged in the suction communication pipe L5.

冷房運転では、四路切換弁２２が第１状態(図１の破線で示す状態)となり、第１ポートＰ１と第３ポートＰ３とが連通すると同時に第２ポートＰ２と第４ポートＰ４とが連通する。圧縮機２１で圧縮された冷媒は、室外熱交換器２３で凝縮し、室内膨張弁１１で減圧され、室内熱交換器１２で蒸発する。 In the cooling operation, the four-way switching valve 22 is in the first state (the state shown by the broken line in FIG. 1), and the first port P1 and the third port P3 communicate with each other, and at the same time, the second port P2 and the fourth port P4 communicate with each other. do. The refrigerant compressed by the compressor 21 is condensed by the outdoor heat exchanger 23, depressurized by the indoor expansion valve 11, and evaporated by the indoor heat exchanger 12.

暖房運転では、四路切換弁２２が第２状態(図１の実線で示す状態)となり、第１ポートＰ１と第４ポートＰ４とが連通すると同時に第２ポートＰ２と第３ポートＰ３とが連通する。圧縮機２１で圧縮された冷媒は、室内熱交換器１２で凝縮し、室外膨張弁２４で減圧され、室外熱交換器２３で蒸発する。 In the heating operation, the four-way switching valve 22 is in the second state (the state shown by the solid line in FIG. 1), and the first port P1 and the fourth port P4 communicate with each other, and at the same time, the second port P2 and the third port P3 communicate with each other. do. The refrigerant compressed by the compressor 21 is condensed by the indoor heat exchanger 12, decompressed by the outdoor expansion valve 24, and evaporated by the outdoor heat exchanger 23.

冷媒回路ＲＣでは、中間圧の冷媒を圧縮機２１内の高圧側領域へ導入するインジェクション動作が行われる。インジェクション動作が実行されるときには、中間電磁弁２６が開放されかつ吸入電磁弁２７が閉鎖される。これにより、気液分離器２５内の中間圧の冷媒は、中間インジェクション配管Ｌ２を通じて圧縮機２１の中間配管Ｌ３へ導入される。インジェクション動作が停止されるときには、中間電磁弁２６が閉鎖されかつ吸入電磁弁２７が開放される。 In the refrigerant circuit RC, an injection operation is performed in which an intermediate pressure refrigerant is introduced into the high pressure side region in the compressor 21. When the injection operation is performed, the intermediate solenoid valve 26 is opened and the suction solenoid valve 27 is closed. As a result, the intermediate pressure refrigerant in the gas-liquid separator 25 is introduced into the intermediate pipe L3 of the compressor 21 through the intermediate injection pipe L2. When the injection operation is stopped, the intermediate solenoid valve 26 is closed and the suction solenoid valve 27 is opened.

図２は圧縮機２１のシリンダ１０１と揺動体１０２の上面図である。図２において、シリンダ１０１内に内周面１０１ａによって確定されるシリンダ室１０３が形成されている。 FIG. 2 is a top view of the cylinder 101 and the rocking body 102 of the compressor 21. In FIG. 2, a cylinder chamber 103 determined by an inner peripheral surface 101a is formed in the cylinder 101.

この圧縮機２１は、図２に示すように、シリンダ室１０３に収容されるピストン１０２ａと、ブレード１０２ｂとが一体に形成された揺動体１０２を備え、シリンダ１０１内において揺動体１０２が揺動する。揺動体１０２のブレード１０２ｂによってシリンダ室１０３内を仕切っている。ブレード１０２ｂの右側に吸入室１０３ａ(低圧側領域)を形成し、ブレード１０２ｂの左側に圧縮室１０３ｂ(高圧側領域)を形成している。ピストン１０２ａとブレード１０２ｂによってシリンダ室１０３を高圧側領域と低圧側領域とに夫々区画している。 As shown in FIG. 2, the compressor 21 includes a rocking body 102 in which a piston 102a housed in a cylinder chamber 103 and a blade 102b are integrally formed, and the rocking body 102 swings in the cylinder 101. .. The inside of the cylinder chamber 103 is partitioned by the blade 102b of the rocking body 102. A suction chamber 103a (low pressure side region) is formed on the right side of the blade 102b, and a compression chamber 103b (high pressure side region) is formed on the left side of the blade 102b. The cylinder chamber 103 is divided into a high pressure side region and a low pressure side region by the piston 102a and the blade 102b, respectively.

また、シリンダ１０１においてブレード１０２ｂの右側(吸入室１０３ａ側)に、径方向に貫通する第１吸入ポート１１０が形成されている。第１吸入ポート１１０は、ブレード１０２ｂの右側の吸入室１０３ａに開口している。第１吸入ポート１１０に外側から吸入管Ｌ４(図１に示す)が接続される。 Further, in the cylinder 101, a first suction port 110 penetrating in the radial direction is formed on the right side (suction chamber 103a side) of the blade 102b. The first suction port 110 is open to the suction chamber 103a on the right side of the blade 102b. A suction pipe L4 (shown in FIG. 1) is connected to the first suction port 110 from the outside.

また、シリンダ１０１においてブレード１０２ｂの左側(圧縮室１０３ｂ側)に、径方向に貫通する第２吸入ポート１２０が形成されている。第２吸入ポート１２０は、ブレード１０２ｂの左側の圧縮室１０３ｂに開口している。第２吸入ポート１２０に外側から配管接続部材２００が接続されている。第２吸入ポート１２０は吸入通路の一例である。シリンダ１０１の径方向外側から第２吸入ポート１２０(吸入通路)に配管接続部材２００の圧入部２０１ｂが圧入されている。配管接続部材２００に外側から中間配管Ｌ３(図１に示す)が接続される。配管接続部材２００に外側から中間配管Ｌ３(図１に示す)が溶接で接続される。 Further, in the cylinder 101, a second suction port 120 penetrating in the radial direction is formed on the left side (compression chamber 103b side) of the blade 102b. The second suction port 120 is open to the compression chamber 103b on the left side of the blade 102b. The pipe connecting member 200 is connected to the second suction port 120 from the outside. The second suction port 120 is an example of a suction passage. The press-fitting portion 201b of the pipe connecting member 200 is press-fitted into the second suction port 120 (suction passage) from the radial outside of the cylinder 101. An intermediate pipe L3 (shown in FIG. 1) is connected to the pipe connecting member 200 from the outside. An intermediate pipe L3 (shown in FIG. 1) is connected to the pipe connecting member 200 from the outside by welding.

また、シリンダ１０１のブレード穴１０４は、シリンダ室１０３と連なってシリンダ１０１に設けられたブッシュ穴である。ブレード穴１０４内に一対の揺動ブッシュ１０５,１０５が配置されている。 Further, the blade hole 104 of the cylinder 101 is a bush hole provided in the cylinder 101 in connection with the cylinder chamber 103. A pair of swing bushes 105, 105 are arranged in the blade hole 104.

ブレード１０２ｂと揺動ブッシュ１０５,１０５との間は、潤滑油で潤滑される。揺動ブッシュ１０５,１０５によりブレード１０２ｂを両側から挟んで進退可能に支持している。このブレード１０２ｂは、シリンダ１０１に設けられた背面空間１０６に出没する。 The space between the blade 102b and the swing bushes 105 and 105 is lubricated with lubricating oil. The swing bushes 105 and 105 sandwich the blade 102b from both sides and support it so that it can move forward and backward. The blade 102b appears and disappears in the back space 106 provided in the cylinder 101.

そして、回転軸１４０は、シリンダ室１０３内に配置される偏心部１５０を有する。この偏心部１５０は、回転軸１４０の中心軸に対して偏心するように設けられている。回転軸１４０の時計回りの回転に伴って偏心部１５０が偏心回転して、偏心部１５０に嵌合したピストン１０２ａが、シリンダ室１０３の内周面１０１ａに沿って旋回運動する。ピストン１０２ａがシリンダ室１０３内で公転するのに伴って、第１吸入ポート１１０から低圧の冷媒ガスを吸入室１０３ａに吸入して、圧縮室１０３ｂで圧縮して高圧にした後、吐出ポート１３０から高圧の冷媒ガスを吐出する。なお、インジェクション動作時は、中間圧の冷媒が第２吸入ポート１２０から圧縮室１０３ｂに導入される。その後、吐出ポート１３０から吐出された冷媒ガスは、圧縮機２１の吐出管Ｌ１から排出される。 The rotating shaft 140 has an eccentric portion 150 arranged in the cylinder chamber 103. The eccentric portion 150 is provided so as to be eccentric with respect to the central axis of the rotating shaft 140. The eccentric portion 150 rotates eccentrically with the clockwise rotation of the rotation shaft 140, and the piston 102a fitted to the eccentric portion 150 swivels along the inner peripheral surface 101a of the cylinder chamber 103. As the piston 102a revolves in the cylinder chamber 103, low-pressure refrigerant gas is sucked into the suction chamber 103a from the first suction port 110, compressed in the compression chamber 103b to a high pressure, and then from the discharge port 130. Discharges high-pressure refrigerant gas. During the injection operation, the intermediate pressure refrigerant is introduced from the second suction port 120 into the compression chamber 103b. After that, the refrigerant gas discharged from the discharge port 130 is discharged from the discharge pipe L1 of the compressor 21.

図３は、シリンダ１０１を回転軸１４０(図２に示す)に直交する平面で切った断面図である。図３において、１３０は、シリンダ１０１においてブレード１０２ｂの左側(圧縮室１０３ｂ側)に形成された吐出ポートである。 FIG. 3 is a cross-sectional view of the cylinder 101 cut along a plane orthogonal to the axis of rotation 140 (shown in FIG. 2). In FIG. 3, reference numeral 130 denotes a discharge port formed on the left side (compression chamber 103b side) of the blade 102b in the cylinder 101.

第２吸入ポート１２０の流入端(シリンダ１０１の径方向外側)に中間配管Ｌ３(図１に示す)を接続している。第２吸入ポート１２０の流出端(シリンダ１０１の径方向内側)はシリンダ室１０３の圧縮室１０３ｂに開口している。これにより、中間配管Ｌ３と圧縮室１０３ｂとが第２吸入ポート１２０を介して連通する。シリンダ１０１の外周面からシリンダ１０１の内周面１０１ａまで延びた第２吸入ポート１２０により、冷媒をシリンダ室１０３へ案内する。 An intermediate pipe L3 (shown in FIG. 1) is connected to the inflow end of the second suction port 120 (outward in the radial direction of the cylinder 101). The outflow end of the second suction port 120 (inward in the radial direction of the cylinder 101) is open to the compression chamber 103b of the cylinder chamber 103. As a result, the intermediate pipe L3 and the compression chamber 103b communicate with each other via the second suction port 120. The refrigerant is guided to the cylinder chamber 103 by the second suction port 120 extending from the outer peripheral surface of the cylinder 101 to the inner peripheral surface 101a of the cylinder 101.

ここで、平面視において、シリンダ室１０３の内周面のブレード穴１０４に連なる２つの端の中心点Ｏ２とシリンダ室１０３の中心点Ｏ１とを通る直線ｘと、第２吸入ポート１２０(吸入通路)の中心軸ｙとが角度θ(例えば２５ｄｅｇ)で交差する。 Here, in a plan view, a straight line x passing through the center point O2 of the two ends connected to the blade hole 104 on the inner peripheral surface of the cylinder chamber 103 and the center point O1 of the cylinder chamber 103, and the second suction port 120 (suction passage). ) And the central axis y intersect at an angle θ (for example, 25 deg).

シリンダ１０１の径方向外側から第２吸入ポート１２０(吸入通路)に圧入されている配管接続部材２００は、円筒状の本体２０１と、環状の弁体２０２と、環状の弁座２０３とを有する。 The pipe connecting member 200 press-fitted into the second suction port 120 (suction passage) from the radial outside of the cylinder 101 has a cylindrical main body 201, an annular valve body 202, and an annular valve seat 203.

円筒状の本体２０１は、シリンダ１０１の径方向外側から順に、フランジ部２０１ａと、圧入部２０１ｂと、弁押さえ部２０１ｃとを有する。弁押さえ部２０１ｃは、軸方向に貫通する複数の貫通穴２０１ｄを有する。複数の貫通穴２０１ｄは、第２吸入ポート１２０の中心軸ｙを中心に環状に配置されている。 The cylindrical main body 201 has a flange portion 201a, a press-fitting portion 201b, and a valve holding portion 201c in this order from the radial outer side of the cylinder 101. The valve holding portion 201c has a plurality of through holes 201d penetrating in the axial direction. The plurality of through holes 201d are arranged in an annular shape about the central axis y of the second suction port 120.

シリンダ室１０３の圧縮室１０３ｂの冷媒圧力が、配管接続部材２００に接続された中間配管Ｌ３内の冷媒圧力よりも低いとき、環状の弁体２０２が弁座２０３に押し付けられる。これにより、中間配管Ｌ３からの冷媒が、弁押さえ部２０１ｃの複数の貫通穴２０１ｄから弁体２０２の中央穴２０２ａと弁座２０３の中央穴２０３ａを介してシリンダ室１０３の圧縮室１０３ｂに流入する。 When the refrigerant pressure in the compression chamber 103b of the cylinder chamber 103 is lower than the refrigerant pressure in the intermediate pipe L3 connected to the pipe connecting member 200, the annular valve body 202 is pressed against the valve seat 203. As a result, the refrigerant from the intermediate pipe L3 flows into the compression chamber 103b of the cylinder chamber 103 from the plurality of through holes 201d of the valve holding portion 201c through the central hole 202a of the valve body 202 and the central hole 203a of the valve seat 203. ..

一方、シリンダ室１０３の圧縮室１０３ｂの冷媒圧力が、配管接続部材２００に接続された中間配管Ｌ３内の冷媒圧力よりも高いとき、環状の弁体２０２が弁押さえ部２０１ｃに押し付けられる。これにより、弁押さえ部２０１ｃの複数の貫通穴２０１ｄが弁体２０２により閉鎖されて、シリンダ室１０３の圧縮室１０３ｂ(高圧側領域)から配管接続部材２００を介して外部に向かう冷媒の流れを規制する。 On the other hand, when the refrigerant pressure in the compression chamber 103b of the cylinder chamber 103 is higher than the refrigerant pressure in the intermediate pipe L3 connected to the pipe connecting member 200, the annular valve body 202 is pressed against the valve holding portion 201c. As a result, the plurality of through holes 201d of the valve holding portion 201c are closed by the valve body 202, and the flow of the refrigerant from the compression chamber 103b (high pressure side region) of the cylinder chamber 103 to the outside via the pipe connecting member 200 is restricted. do.

この円筒状の本体２０１の弁押さえ部２０１ｃと弁体２０２と弁座２０３とで第２吸入ポート１２０を開閉するための弁構造２１０を構成している。上記弁構造２１０は、配管接続部材２００とシリンダ室１０３との間に位置する。なお、この実施形態では、本体２０１の弁押さえ部２０１ｃと弁体２０２と弁座２０３とで構成された弁構造２１０を用いたが、弁構造はこれに限らず、他の構成の弁構造を用いてもよい。 The valve holding portion 201c of the cylindrical main body 201, the valve body 202, and the valve seat 203 form a valve structure 210 for opening and closing the second suction port 120. The valve structure 210 is located between the pipe connecting member 200 and the cylinder chamber 103. In this embodiment, a valve structure 210 composed of a valve holding portion 201c of the main body 201, a valve body 202, and a valve seat 203 is used, but the valve structure is not limited to this, and a valve structure having another configuration can be used. You may use it.

図３に示すように、シリンダ室１０３の中心点Ｏ１から配管接続部材２００の圧入部２０１ｂまでの距離Ｒ２は、ブレード穴１０４の径方向外側の端までの距離Ｒ１以上としている。 As shown in FIG. 3, the distance R2 from the center point O1 of the cylinder chamber 103 to the press-fitting portion 201b of the pipe connecting member 200 is set to be equal to or greater than the distance R1 to the radial outer end of the blade hole 104.

図４は、ＦＥＭ(有限要素法)解析を用いたシミュレーシヨンにより求めた距離Ｒ２と距離Ｒ１との差(Ｒ２－Ｒ１)と、ブレード穴１０４の変位との関係を示す。図４において、横軸は差(Ｒ２－Ｒ１)を表し、縦軸は、差(Ｒ２－Ｒ１)が－１．２ｍｍのときのブレード穴１０４の変位を１００としたときの変位の割合を表す。なお、図４におけるブレード穴１０４の変位とは、ブレード穴１０４の半径方向の歪の(最大値－最小値)を表す。 FIG. 4 shows the relationship between the difference (R2-R1) between the distance R2 and the distance R1 obtained by simulation using FEM (finite element method) analysis and the displacement of the blade hole 104. In FIG. 4, the horizontal axis represents the difference (R2-R1), and the vertical axis represents the displacement ratio when the displacement of the blade hole 104 when the difference (R2-R1) is −1.2 mm is 100. .. The displacement of the blade hole 104 in FIG. 4 represents the radial strain (maximum value-minimum value) of the blade hole 104.

図４に示すように、比Ｒ２／Ｒ１が１．０２８６のとき、０．９７５５のときに比べて変位量は約６８となっている。また、比Ｒ２／Ｒ１が１．０８３７のとき、０．９７５５のときに比べて変位量は約５２となっている。 As shown in FIG. 4, when the ratio R2 / R1 is 1.0286, the displacement amount is about 68 as compared with the case of 0.9755. Further, when the ratio R2 / R1 is 1.0837, the displacement amount is about 52 as compared with the case of 0.9755.

図５は、ＦＥＭ(有限要素法)解析を用いたシミュレーシヨンにより求めた第１実施形態のシリンダ１０１の比Ｒ２／Ｒ１と変位量との関係を示し、図６は、比較例のシリンダの比Ｒ２／Ｒ１と変位量との関係を示す。図５では、比Ｒ２／Ｒ１が１．０２８６であり、図６では、比Ｒ２／Ｒ１が０．９７５５である。なお、図５,図６におけるブレード穴１０４の変位量とは、圧入前後のブレード穴１０４の半径方向の変位量を示す。 FIG. 5 shows the relationship between the ratio R2 / R1 of the cylinder 101 of the first embodiment and the displacement amount obtained by simulation using FEM (finite element method) analysis, and FIG. 6 shows the ratio of the cylinders of the comparative example. The relationship between R2 / R1 and the amount of displacement is shown. In FIG. 5, the ratio R2 / R1 is 1.0286, and in FIG. 6, the ratio R2 / R1 is 0.9755. The displacement amount of the blade hole 104 in FIGS. 5 and 6 indicates the displacement amount of the blade hole 104 in the radial direction before and after press fitting.

図５,図６において、×印は、配管接続部材２００が第２吸入ポート１２０(吸入通路)に圧入される前の元形状であり、◇印は、配管接続部材２００が第２吸入ポート１２０(吸入通路)に圧入された後の変形形状である。なお、◇印の変形形状は、変位量を５００倍にして元形状に加算している。 In FIGS. 5 and 6, the x mark is the original shape before the pipe connection member 200 is press-fitted into the second suction port 120 (suction passage), and the ◇ mark is the pipe connection member 200 in the second suction port 120. It is a deformed shape after being press-fitted into (suction passage). The deformed shape marked with ◇ is added to the original shape by multiplying the displacement amount by 500.

上記構成の圧縮機２１によれば、シリンダ室１０３の中心点Ｏ１から配管接続部材２００の圧入部２０１ｂまでの距離Ｒ２を、ブレード穴１０４の径方向外側の端までの距離Ｒ１以上にすることで、配管接続部材２００の圧入部２０１ｂをシリンダ１０１の第２吸入ポート１２０(吸入通路)に圧入するときのシリンダ１０１におけるブレード穴１０４の変形を抑制でき、ブレード１０２ｂの異常摩耗や焼き付きの発生を抑えることができる。 According to the compressor 21 having the above configuration, the distance R2 from the center point O1 of the cylinder chamber 103 to the press-fitting portion 201b of the pipe connecting member 200 is set to be equal to or greater than the distance R1 to the radial outer end of the blade hole 104. , Deformation of the blade hole 104 in the cylinder 101 when the press-fitting portion 201b of the pipe connecting member 200 is press-fitted into the second suction port 120 (suction passage) of the cylinder 101 can be suppressed, and abnormal wear and seizure of the blade 102b can be suppressed. be able to.

また、上記第２吸入ポート１２０(吸入通路)はシリンダ室１０３の圧縮室１０３ｂ(高圧側領域)に連通し、配管接続部材２００からの冷媒が第２吸入ポート１２０を介してシリンダ室１０３の圧縮室１０３ｂに供給されることによって、中間圧の冷媒を、第２吸入ポート１２０を介してシリンダ室１０３の圧縮室１０３ｂに導入することにより、冷凍能力を向上できる。 Further, the second suction port 120 (suction passage) communicates with the compression chamber 103b (high pressure side region) of the cylinder chamber 103, and the refrigerant from the pipe connecting member 200 compresses the cylinder chamber 103 via the second suction port 120. By being supplied to the chamber 103b, the refrigerating capacity can be improved by introducing the intermediate pressure refrigerant into the compression chamber 103b of the cylinder chamber 103 via the second suction port 120.

また、第２吸入ポート１２０(吸入通路)内に設置された弁構造２１０によって、配管接続部材２００とシリンダ室１０３との間で、シリンダ室１０３の高圧側領域から配管接続部材２００へ向かう冷媒の流れを規制するので、圧縮機２１側から第２吸入ポート１２０を介して冷媒が逆流するのを抑制できる。 Further, the valve structure 210 installed in the second suction port 120 (suction passage) allows the refrigerant to flow from the high pressure side region of the cylinder chamber 103 to the pipe connection member 200 between the pipe connection member 200 and the cylinder chamber 103. Since the flow is regulated, it is possible to suppress the backflow of the refrigerant from the compressor 21 side through the second suction port 120.

なお、上記第１実施形態では、比Ｒ２／Ｒ１が１．０２８６としたが、シリンダ室１０３の中心点Ｏ１から配管接続部材２００の圧入部２０１ｂまでの距離Ｒ２と、ブレード穴１０４の径方向外側の端までの距離Ｒ１との比Ｒ２／Ｒ１が１．０２以上であるのが好ましい。これにより、配管接続部材２００の圧入部２０１ｂをシリンダ１０１の第２吸入ポート１２０(吸入通路)に圧入するとき、シリンダ１０１におけるブレード穴１０４の変形を抑制できる。 In the first embodiment, the ratio R2 / R1 is 1.0286, but the distance R2 from the center point O1 of the cylinder chamber 103 to the press-fitting portion 201b of the pipe connecting member 200 and the radial outside of the blade hole 104. It is preferable that the ratio R2 / R1 to the distance R1 to the end is 1.02 or more. As a result, when the press-fitting portion 201b of the pipe connecting member 200 is press-fitted into the second suction port 120 (suction passage) of the cylinder 101, deformation of the blade hole 104 in the cylinder 101 can be suppressed.

また、平面視において、シリンダ室１０３の内周面のブレード穴１０４に連なる２つの端の中心点Ｏ２とシリンダ室１０３の中心点Ｏ１とを通る直線ｘと、第２吸入ポート１２０(吸入通路)の中心軸ｙとが、鋭角で交差するのが好ましい。これにより、配管接続部材２００の圧入部２０１ｂをシリンダ１０１の第２吸入ポート１２０に圧入するときの変形量が多い圧縮機の場合でも、シリンダ１０１におけるブレード穴１０４の変形を抑制できる。 Further, in a plan view, a straight line x passing through the center point O2 of the two ends connected to the blade hole 104 on the inner peripheral surface of the cylinder chamber 103 and the center point O1 of the cylinder chamber 103, and the second suction port 120 (suction passage). It is preferable that the central axis y of the above crosses at an acute angle. As a result, even in the case of a compressor having a large amount of deformation when the press-fitting portion 201b of the pipe connecting member 200 is press-fitted into the second suction port 120 of the cylinder 101, the deformation of the blade hole 104 in the cylinder 101 can be suppressed.

また、シリンダ１０１におけるブレード穴１０４の変形を抑制してブレード１０２ｂの異常摩耗や焼き付きの発生を抑えることができる圧縮機２１を用いることによって、信頼性の高い空気調和機を実現できる。 Further, by using the compressor 21 capable of suppressing the deformation of the blade hole 104 in the cylinder 101 and suppressing the occurrence of abnormal wear and seizure of the blade 102b, a highly reliable air conditioner can be realized.

〔第２実施形態〕
本開示の第２実施形態の圧縮機は、弁構造を除いて第１実施形態の圧縮機２１と同一の構成をしている。この第２実施形態の圧縮機は、シリンダ室の高圧側領域から配管接続部材を介して外部に向かう冷媒の流れを規制する弁構造を圧縮機の外部に設置している。 [Second Embodiment]
The compressor of the second embodiment of the present disclosure has the same configuration as the compressor 21 of the first embodiment except for the valve structure. In the compressor of the second embodiment, a valve structure that regulates the flow of the refrigerant from the high-pressure side region of the cylinder chamber to the outside via the pipe connecting member is installed outside the compressor.

上記第２実施形態の圧縮機は、第１実施形態の圧縮機２１と同様の効果を有する。 The compressor of the second embodiment has the same effect as the compressor 21 of the first embodiment.

上記第１,第２実施形態では、１シリンダの圧縮機について説明したが、２シリンダの圧縮機に本開示を適用してもよいし、他の構成の圧縮機に本開示を適用してもよい。 In the first and second embodiments, the one-cylinder compressor has been described, but the present disclosure may be applied to a two-cylinder compressor, or the present disclosure may be applied to a compressor having another configuration. good.

上記第１,第２実施形態では、冷凍装置としての空気調和機について説明したが、空気調和機に限らず、他の構成の冷凍装置でもよい。 In the first and second embodiments, the air conditioner as a refrigerating device has been described, but the air conditioner is not limited to the air conditioner, and a refrigerating device having another configuration may be used.

本開示の具体的な実施の形態について説明したが、本開示は上記第１,第２実施形態に限定されるものではなく、本開示の範囲内で種々変更して実施することができる。例えば、ピストン１０２ａとブレード１０２ｂとが一体に形成された揺動体１０２を用いていたが、ピストンとブレードとが別体に形成された揺動体を用いてもよい。 Although the specific embodiments of the present disclosure have been described, the present disclosure is not limited to the first and second embodiments described above, and various modifications can be made within the scope of the present disclosure. For example, although the rocking body 102 in which the piston 102a and the blade 102b are integrally formed is used, a rocking body in which the piston and the blade are formed separately may be used.

１…室内ユニット
２…室外ユニット
１１…室内膨張弁
１２…室内熱交換器
２１…圧縮機
２２…四路切換弁
２３…室外熱交換器
２４…室外膨張弁
２５…気液分離器
１０１…シリンダ
１０１ａ…内周面
１０２…揺動体
１０２ａ…ピストン
１０２ｂ…ブレード
１０３…シリンダ室
１０３ａ…吸入室(低圧側領域)
１０３ｂ…圧縮室(高圧側領域)
１１０…第１吸入ポート
１２０…第２吸入ポート(吸入通路)
１３０…吐出ポート
１４０…回転軸
１５０…偏心部
２００…配管接続部材
２０１…円筒状の本体
２０１ａ…フランジ部
２０１ｂ…圧入部
２０１ｃ…弁押さえ部
２０１ｄ…貫通穴
２０２…環状の弁体
２０３…環状の弁座
２０３ａ…中央穴
２１０…弁構造
Ｌ１…吐出管
Ｌ２…中間インジェクション配管
Ｌ３…中間配管
Ｌ４…吸入管
Ｌ５…吸入連通管
Ｐ１…第１ポート
Ｐ２…第２ポート
Ｐ３…第３ポート
Ｐ４…第４ポート
ＲＣ…冷媒回路 1 ... Indoor unit 2 ... Outdoor unit 11 ... Indoor expansion valve 12 ... Indoor heat exchanger 21 ... Compressor 22 ... Four-way switching valve 23 ... Outdoor heat exchanger 24 ... Outdoor expansion valve 25 ... Gas-liquid separator 101 ... Cylinder 101a ... Inner peripheral surface 102 ... Swinging body 102a ... Piston 102b ... Blade 103 ... Cylinder chamber 103a ... Suction chamber (low pressure side region)
103b ... Compression chamber (high pressure side region)
110 ... 1st suction port 120 ... 2nd suction port (suction passage)
130 ... Discharge port 140 ... Rotating shaft 150 ... Eccentric part 200 ... Piping connection member 201 ... Cylindrical body 201a ... Flange part 201b ... Press-fitting part 201c ... Valve holding part 201d ... Through hole 202 ... Circular valve body 203 ... Circular Valve seat 203a ... Central hole 210 ... Valve structure L1 ... Discharge pipe L2 ... Intermediate injection pipe L3 ... Intermediate pipe L4 ... Suction pipe L5 ... Suction communication pipe P1 ... 1st port P2 ... 2nd port P3 ... 3rd port P4 ... 4-port RC ... Refrigerator circuit

Claims (6)

シリンダ(１０１)と、
上記シリンダ(１０１)の内周面(１０１ａ)で確定されるシリンダ室(１０３)と、
上記シリンダ室(１０３)に収容され、上記シリンダ(１０１)の内周面(１０１ａ)に沿って旋回運動するピストン(１０２ａ)と、
上記ピストン(１０２ａ)と共に、上記シリンダ室(１０３)を高圧側領域(１０３ｂ)と低圧側領域(１０３ａ)とに区画するブレード(１０２ｂ)と、
上記シリンダ(１０１)に設けられると共に、上記シリンダ室(１０３)に連通し、上記ブレード(１０２ｂ)が進退するブレード穴(１０４)と、
上記シリンダ(１０１)の外周面から上記シリンダ(１０１)の内周面(１０１ａ)まで延び、冷媒を上記シリンダ室(１０３)へ案内する吸入通路(１２０)と、
上記シリンダ(１０１)の径方向外側から上記吸入通路(１２０)に圧入にされる圧入部(２０１ｂ)を有する配管接続部材(２００)と
を備え、
上記シリンダ室(１０３)の中心点(Ｏ１)から上記圧入部(２０１ｂ)までの距離(Ｒ２)は、上記ブレード穴(１０４)の径方向外側の端までの距離(Ｒ１)以上である、圧縮機(２１)。 Cylinder (101) and
The cylinder chamber (103) determined by the inner peripheral surface (101a) of the cylinder (101) and
A piston (102a) housed in the cylinder chamber (103) and swiveling along the inner peripheral surface (101a) of the cylinder (101).
A blade (102b) that divides the cylinder chamber (103) into a high pressure side region (103b) and a low pressure side region (103a) together with the piston (102a).
A blade hole (104) provided in the cylinder (101) and communicating with the cylinder chamber (103) to allow the blade (102b) to advance and retreat.
A suction passage (120) extending from the outer peripheral surface of the cylinder (101) to the inner peripheral surface (101a) of the cylinder (101) and guiding the refrigerant to the cylinder chamber (103).
A pipe connecting member (200) having a press-fitting portion (201b) to be press-fitted into the suction passage (120) from the radial outside of the cylinder (101) is provided.
The distance (R2) from the center point (O1) of the cylinder chamber (103) to the press-fitting portion (201b) is equal to or greater than the distance (R1) to the radial outer end of the blade hole (104). Machine (21). 請求項１に記載の圧縮機(２１)において、
上記吸入通路(１２０)は上記シリンダ室(１０３)の上記高圧側領域(１０３ｂ)に連通し、上記配管接続部材(２００)からの冷媒が上記吸入通路(１２０)を介して上記シリンダ室(１０３)の上記高圧側領域(１０３ｂ)に供給される、圧縮機(２１)。 In the compressor (21) according to claim 1,
The suction passage (120) communicates with the high pressure side region (103b) of the cylinder chamber (103), and the refrigerant from the pipe connecting member (200) passes through the suction passage (120) to the cylinder chamber (103). ), The compressor (21) supplied to the high pressure side region (103b). 請求項２に記載の圧縮機(２１)において、
上記吸入通路(１２０)内に設置され、上記シリンダ室(１０３)の上記高圧側領域(１０３ｂ)から上記配管接続部材(２００)へ向かう冷媒の流れを規制する弁構造(２１０)を備える、圧縮機(２１)。 In the compressor (21) according to claim 2,
A compression that is installed in the suction passage (120) and includes a valve structure (210) that regulates the flow of refrigerant from the high pressure side region (103b) of the cylinder chamber (103) to the pipe connecting member (200). Machine (21). 請求項１から３までのいずれか一項に記載の圧縮機(２１)において、
上記シリンダ室(１０３)の中心点(Ｏ１)から上記圧入部(２０１ｂ)までの距離(Ｒ２)と、上記ブレード穴(１０４)の径方向外側の端までの距離(Ｒ１)との比(Ｒ２／Ｒ１)が１．０２以上である、圧縮機(２１)。 In the compressor (21) according to any one of claims 1 to 3, the compressor (21)
The ratio (R2) of the distance (R2) from the center point (O1) of the cylinder chamber (103) to the press-fitting portion (201b) and the distance (R1) to the radial outer end of the blade hole (104). / R1) is 1.02 or more, the compressor (21). 請求項２または３に記載の圧縮機(２１)において、
平面視において、上記シリンダ室(１０３)の内周面(１０１ａ)の上記ブレード穴(１０４)に連なる２つの端の中心点(Ｏ２)と上記シリンダ室(１０３)の中心点(Ｏ１)とを通る直線(ｘ)と、上記吸入通路(１２０)の中心軸(ｙ)とが、鋭角で交差する、圧縮機(２１)。 In the compressor (21) according to claim 2 or 3.
In a plan view, the center point (O2) of two ends connected to the blade hole (104) of the inner peripheral surface (101a) of the cylinder chamber (103) and the center point (O1) of the cylinder chamber (103) are set. A compressor (21) in which a straight line (x) passing through and a central axis (y) of the suction passage (120) intersect at an acute angle. 請求項１から５までのいずれか一項に記載の圧縮機(２１)を備える、冷凍装置。 A refrigerating apparatus comprising the compressor (21) according to any one of claims 1 to 5.
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JPH0988856A (en) * 1995-09-20 1997-03-31 Daikin Ind Ltd Rotary compressor
JP2006152931A (en) * 2004-11-30 2006-06-15 Hitachi Home & Life Solutions Inc Rotary two-stage compressor

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JPH06213183A (en) 1993-01-21 1994-08-02 Matsushita Refrig Co Ltd Intake device for rotary compressor
JP2003262192A (en) * 2002-03-07 2003-09-19 Daikin Ind Ltd Sealed compressor
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JPS5388809U (en) * 1976-12-23 1978-07-21
JPS58109591U (en) * 1982-01-20 1983-07-26 三菱電機株式会社 rotary compressor
JPH0988856A (en) * 1995-09-20 1997-03-31 Daikin Ind Ltd Rotary compressor
JP2006152931A (en) * 2004-11-30 2006-06-15 Hitachi Home & Life Solutions Inc Rotary two-stage compressor

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