WO2015125253A1 - Scroll compressor and refrigeration cycle device using same - Google Patents
Scroll compressor and refrigeration cycle device using same Download PDFInfo
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- WO2015125253A1 WO2015125253A1 PCT/JP2014/054032 JP2014054032W WO2015125253A1 WO 2015125253 A1 WO2015125253 A1 WO 2015125253A1 JP 2014054032 W JP2014054032 W JP 2014054032W WO 2015125253 A1 WO2015125253 A1 WO 2015125253A1
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- joint member
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- scroll compressor
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- injection
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/04—Heating; Cooling; Heat insulation
- F04C29/042—Heating; Cooling; Heat insulation by injecting a fluid
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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
- F04C18/02—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
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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
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/082—Details specially related to intermeshing engagement type 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
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/008—Hermetic 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
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L41/00—Branching pipes; Joining pipes to walls
- F16L41/08—Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of the wall or to the axis of another pipe
- F16L41/082—Non-disconnectible joints, e.g. soldered, adhesive or caulked joints
-
- 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
Definitions
- the present invention relates to a scroll compressor that compresses refrigerant circulating in a refrigeration cycle circuit, and a refrigeration cycle apparatus using the scroll compressor.
- Patent Document 1 a scroll compressor that cools a compressor by injecting and evaporating, for example, liquid refrigerant in a receiver that forms a refrigerant circuit into an intermediate pressure portion in the course of compression has been proposed (for example, Patent Document 1).
- the scroll compressor of Patent Document 1 two injection ports are provided on the upper surface of the fixed scroll, and injection pipes are connected to the two injection ports, respectively.
- the injection pipe is a so-called T-shaped pipe, and the refrigerant flowing through the injection pipe is branched into two and flows into each injection port.
- the injection piping shown in Patent Document 1 has a structure in which, for example, a hole is formed in the side wall of the pipe by burring or the like, and another pipe is inserted into the hole and brazed.
- a high-pressure liquid refrigerant flows through the injection pipe, such as when using a high-pressure refrigerant such as a mixed refrigerant containing CO2 refrigerant, R32 refrigerant, etc.
- the thickness of the copper pipe is increased from the viewpoint of pressure resistance.
- the injection pipe is thick, burring and the like are difficult. For this reason, the fitting depth (fitting margin) at the time of brazing becomes short, and there is a possibility that cracks may occur in the joint portion due to excessive stress.
- the present invention has been made to solve the above-described problems, and even when a high-pressure refrigerant is used, a scroll compressor that can reliably prevent the occurrence of cracks in the injection pipe and the like, and An object of the present invention is to provide a refrigeration cycle apparatus using the same.
- the scroll compressor according to the present invention includes a swing scroll provided with a spiral body and performing a swing motion by driving a motor, and a spiral body fitted into the spiral body of the swing scroll, and cooperates with the swing scroll. And a fixed scroll that forms a compression chamber for compressing the working gas, the fixed scroll having a plurality of injection ports penetrating from the upper part to the compression chamber. An injection piping unit that is provided on the plurality of injection ports and supplies the working fluid to the plurality of injection ports.
- the injection piping unit includes a main pipe through which the working fluid supplied from the outside to the plurality of injection ports flows, and one end Is connected to the main pipe and the other end has multiple injection ports It has a plurality of branch pipes that are connected respectively, and a joint member whose ends are joined fitted respectively between the pipe and a plurality of branch pipes.
- the main pipe and the plurality of branch pipes are fitted and joined to the joint member, so that the main pipe and the branch pipe can be increased in thickness. Since it is possible to secure the fitting depth (fitting margin) at the time of joining the pipe and the plurality of branch pipes, even when a high-pressure working fluid flows, cracks occur in the joint due to excessive stress. Can be prevented.
- FIG. 1 is a sectional view of a scroll compressor 1 according to Embodiment 1 of the present invention
- FIG. 2 is a perspective view showing an example of a fixed scroll in the scroll compressor of FIG. 1
- FIG. 3 is a fixed scroll in the scroll compressor of FIG.
- the scroll compressor 1 will be described with reference to FIGS. 1 to 3.
- the scroll compressor 1 shown in FIGS. 1 to 3 compresses and discharges a working fluid such as a gas refrigerant in a scroll-shaped compression chamber 10A. It has.
- the shell (sealed container) 2 is formed in a cylindrical shape having a sealed space and has pressure resistance.
- a suction pipe 2A for taking the working gas into the shell 2 is connected to the side surface of the shell 2
- a discharge pipe 2B for discharging the compressed working gas from the shell 2 is connected to the upper surface.
- Frames 2D and 2E are fixed to the upper side and the lower side of the shell 2, respectively, and an oil sump 2C for storing lubricating oil is formed at the bottom of the shell 2.
- the main shaft 3 is rotatably supported in the shell 2 by frames 2D and 2E by bearings or the like.
- An eccentric shaft portion is attached to the upper end of the main shaft 3 in an eccentric state with respect to the main shaft 3, and an orbiting scroll 11 is provided on the eccentric shaft portion so as to be capable of revolving.
- An oil pump (not shown) is attached to the lower end of the main shaft 3, and the oil pump shakes oil stored in the lower portion of the shell 2 from the upper portion of the eccentric shaft portion through a passage provided in the main shaft 3. Supplied to the dynamic bearing 11A.
- the motor 4 rotates the main shaft 3 and has a rotor 4A and a stator 4B.
- the stator 4B is fixed to the shell 2, and the rotor 4A is fixed to the main shaft 3. And when electric power is supplied from an inverter circuit etc., the main shaft 3 and the rotor 4A rotate with respect to the stator 4B.
- the fluid compression unit 10 compresses a working fluid such as a gas refrigerant sucked from the suction pipe 2 ⁇ / b> A, and includes a rocking scroll 11 and a fixed scroll 12.
- a spiral body is formed on each of the upper surface of the swing scroll 11 and the lower surface of the fixed scroll 12, and the spiral bodies of the swing scroll 11 and the fixed scroll 12 are arranged to face each other.
- a compression chamber 10 ⁇ / b> A is formed between the spiral body of the fixed scroll 12 and the spiral body of the swing scroll 11.
- the orbiting scroll 11 is supported by the frame 2D installed inside the shell 2 so as to perform a revolving motion, and an orbiting bearing 11A is provided on the lower surface of the orbiting scroll 11.
- An Oldham ring (not shown) supported swingably on the frame 2D between the frame 2D and the swing scroll 11 so as to give a swing motion while preventing the swing scroll 11 from rotating. Is provided.
- the fixed scroll 12 is arranged on the upper part of the swing scroll 11 and is fixed to the frame 2D.
- a discharge port 12A for discharging the working fluid is formed at the center of the fixed scroll 12, and a reed valve 13 for preventing the backflow of the compressed working gas is disposed on the discharge port 12A.
- the reed valve 13 has a movable range restricted by a valve retainer 14, and the reed valve 13 and the valve retainer 14 are fixed to the upper surface of the fixed scroll 12 by a valve bolt 15.
- a plurality of compression chambers 10 ⁇ / b> A whose volumes change relatively are formed by meshing the spiral body of the orbiting scroll 11 and the spiral body of the fixed scroll 12.
- valve cover 20 is attached to the upper portion of the fixed scroll 12 with screws 23.
- An insertion hole 21 into which the discharge pipe 2B is inserted is formed in the valve cover 20, and the working fluid discharged from the discharge port 12A is discharged from the discharge pipe 2B inserted into the insertion hole 21 to the outside. ing.
- the operation of the scroll compressor 1 will be described with reference to FIG.
- the motor 4 When the motor 4 is energized, the main shaft 3 rotates and the orbiting scroll 11 at the tip of the main shaft 3 performs a revolving motion. Then, along with the orbiting motion of the orbiting scroll 11, the compression chamber 10A moves toward the center while reducing the volume, and the refrigerant is compressed. After that, the fluid sucked into the shell 2 is compressed in the fluid compressing unit 10, passes through the discharge port 12 ⁇ / b> A of the fixed scroll 12, and passes from the discharge pipe 2 ⁇ / b> B to the outside of the shell 2 through the reed valve 13 and the valve cover 20. To be discharged.
- the scroll compressor 1 causes the liquid refrigerant having a pressure higher than that in the compression chamber 10A to flow into the compression chamber 10A in order to increase the capacity of the refrigerant in the compression chamber 10A and to cool the compression chamber 10A.
- the fixed scroll 12 is provided with a plurality of injection ports 12B through which liquid refrigerant flows into the compression chamber 10A, and an intermediate portion of the compression process of the fixed scroll 12 from the injection port 12B. Liquid refrigerant flows into the tank.
- FIG. 2 although illustrated about the case where the two injection ports 12B are provided, two or more may be provided.
- the injection port 12B is a through-hole penetrating from the upper surface of the fixed scroll 12 to the surface where the spiral body is formed, and an injection pipe for supplying a working fluid (liquid refrigerant) to the injection port 12B on the injection port 12B.
- a unit 30 is arranged.
- FIG. 4 is a perspective view showing an example of the injection piping unit 30.
- the injection piping unit 30 shown in FIG. 4 has a main pipe 31, branch pipes 32 ⁇ / b> A and 32 ⁇ / b> B, and a joint member 33.
- the main pipe 31 and the branch pipes 32A and 32B are made of, for example, a copper pipe or the like, and are constituted by separate pipes.
- the working fluid supplied from the outside to the injection port 12 ⁇ / b> B flows, and the end portion is joined to the joint member 33.
- one end of each of the branch pipes 32A and 32B is joined to the joint member 33, and pipe covers 34A and 34B are attached to the other ends. Then, the pipe covers 34A and 34B are respectively fixed on the injection port 12B with screws 35, whereby the branch pipes 32A and 32B are connected to the plurality of injection ports 12B, respectively.
- the joint member 33 connects the main pipe 31 and the plurality of branch pipes 32A and 32B, and is made of a high-strength material such as iron. End portions of the main pipe 31 and the plurality of branch pipes 32A and 32B are fitted and joined to the joint member 33, respectively.
- FIG. 5 is a cross-sectional view showing a cross section of the joint member in the injection piping unit 30 of FIG. As shown in FIG. 5, the joint member 33 has a cylindrical shape having openings 33B at both ends, and is provided with holes for attaching the main pipe 31 to the side wall 33A.
- the branch pipes 32A and 32B are fitted and fixed to the opening 33B of the joint member 33, respectively, and the main pipe 31 is fitted and fixed to the hole 33H of the side wall 33A.
- the branch pipes 32A and 32B are formed with an outer diameter of ⁇ 1, an inner diameter of ⁇ 2, and a thickness of D1, respectively.
- the joint member 33 is formed such that the outer diameter ⁇ 10 is larger than the outer diameter ⁇ 1 of the branch pipes 32A and 32B, and the inner diameter ⁇ 2 is the inner diameter ⁇ 2 of the branch pipes 32A and 32B.
- the thickness D10 of the joint member 33 is larger than the thickness D1 of the branch pipes 32A and 32B.
- the main pipe 31 and the branch pipes 32A and 32B may be pipes having the same outer diameter and inner diameter, or may be pipes having different outer diameters and inner diameters.
- an insertion portion 33C is formed which is formed larger than the inner diameter ⁇ 2 of the joint member 33 and into which the branch pipes 32A and 32B are inserted.
- the plurality of branch pipes 32A and 32B are inserted into the insertion portions 33C of the openings 33B at both ends of the joint member 33, and are joined by brazing or the like.
- the insertion portion 33C has a diameter larger than the inner diameter ⁇ 2 of the joint member by the thickness D1. Then, when the branch pipes 32A and 32B are inserted into the insertion portion 33C, it is possible to prevent a step from being formed in the joint member 33. Therefore, the flow resistance when the working fluid flowing through the joint member 33 flows can be reduced.
- a hole 33H is formed in the side wall 33A of the joint member 33, and the main pipe 31 is fitted into the hole 33H and joined.
- the hole 33H of the side wall 33A of the joint member 33 has a fitting portion 33H1 into which the main pipe 31 is fitted, and a through portion 33H2 formed with a smaller diameter than the fitting portion 33H1.
- the fitting portion 33 ⁇ / b> H ⁇ b> 1 has a predetermined fitting depth (fitting margin) D ⁇ b> 2 and is formed to have the same diameter as the outer diameter of the main pipe 31.
- the main pipe 31 is fitted into the fitting portion 33H1 and joined by brazing or the like.
- the penetrating portion 33H2 has the same size as the inner diameter ⁇ 2 of the main pipe 31.
- the joint structure 33 is added to the direct connection portion between the main piping 31 and the branch piping 32A, 32B, and the piping structure in which the fitting depth (fitting margin) is secured.
- a high-pressure refrigerant such as a mixed refrigerant containing CO2 refrigerant, R32 refrigerant, etc., it is necessary to increase the thickness of the piping.
- the joint member 33 is made of a high-strength member made of iron or the like, so that the size of the joint member 33 can be made compact and space can be saved, and the injection piping is provided on the back surface of the fixed scroll 12 with little space by the valve cover 20 or the like.
- a unit 30 can be installed.
- the joint member 33 has a cylindrical shape with openings 33B formed at both ends, and holes 33H are formed in the side wall 33A, and a plurality of branch pipes 32A and 32B are opened at both ends of the joint member 33.
- the fitting depth of the plurality of branch pipes 32A and 32B (fitting allowance) is set. It can be surely secured to prevent the pipe from being damaged. Further, the degree of freedom of the pipe shape or pipe diameter in the axial direction and the circumferential direction of the joint member 33 can be increased, and the injection pipe unit 30 can be installed on the back surface of the fixed scroll 12 with little space by the valve cover 20 or the like.
- the hole 33H of the side wall 33A of the joint member 33 has a fitting part 33H1 into which the main pipe 31 is fitted and a through part 33H2 formed with a smaller diameter than the fitting part 33H1, the main pipe 31 is provided. It is possible to reliably secure the fitting depth (fitting margin) and to prevent the pipe from being damaged.
- FIG. FIG. 6 is a perspective view showing an injection piping unit in the scroll compressor according to Embodiment 2 of the present invention, and the injection piping unit 130 will be described with reference to FIG. 6.
- the injection piping unit 130 of FIG. 6 the part which has the same structure as the injection piping unit 30 of FIG. 4 is attached
- the injection pipe unit 130 in FIG. 6 is different from the injection pipe unit 30 in FIG. 4 in the structure of the joint member 133.
- the joint structure between the joint member 133 and the main pipe 31 in FIG. 6 is the same as the joint structure between the joint member 33 and the branch pipes 32A and 32B in FIG. 5, and the joint member 133 and the branch pipes 32A and 32B in FIG. Is the same as the joint structure of the joint member 33 and the main pipe 31 in FIG.
- the joint member 133 is added to the direct connection portion between the main piping 31 and the branch piping 32A, 32B, and the insertion depth is increased.
- FIG. FIG. 7 is a refrigerant circuit diagram showing an embodiment of an air-conditioning apparatus using the scroll compressor of the present invention, and the refrigeration cycle apparatus 200 will be described with reference to FIG.
- the refrigeration cycle apparatus 200 includes a scroll compressor 1, a condenser 202, a first expansion valve 203 that is a decompression apparatus, and an evaporator 204 connected by a refrigerant pipe.
- the scroll compressor 1 compresses a refrigerant and has a structure provided with an injection port 12B.
- the condenser 202 radiates the heat of the refrigerant to the heat medium by exchanging heat between the refrigerant flowing through the main refrigerant circuit and the heat medium (for example, air or water). For example, the condenser 202 exchanges heat between air supplied from a blower (not shown) and the refrigerant.
- the condenser 202 includes, for example, a heat transfer tube through which the refrigerant passes and a heat transfer fin (not shown) for increasing the heat transfer area between the refrigerant flowing through the heat transfer tube and the air. Heat exchange with the outside air).
- the first expansion valve 203 decompresses and expands the refrigerant flowing through the main refrigerant circuit, and may be configured with a valve whose opening degree can be variably controlled, such as an electronic expansion valve.
- the evaporator 204 causes the refrigerant to absorb the heat of the heat medium by exchanging heat between the refrigerant flowing through the main refrigerant circuit and the heat medium (for example, air or water).
- the heat medium for example, air or water
- the condenser 202 exchanges heat between air supplied from a blower (not shown) and the refrigerant.
- the evaporator 204 includes, for example, a heat transfer tube that allows the refrigerant to pass therethrough and a heat transfer fin (not shown) for increasing the heat transfer area between the refrigerant flowing through the heat transfer tube and the air. Heat is exchanged between them, and the refrigerant is evaporated and gasified.
- an injection pipe 205 and an inter-refrigerant heat exchanger 206 for injecting the scroll compressor 1 are connected between the condenser 202 and the first expansion valve 203.
- the injection pipe 205 circulates the refrigerant to be injected from between the condenser 202 and the first expansion valve 203 to the injection port 12B (see FIGS. 1 to 6) via the injection pipe units 30 and 130 of the scroll compressor 1. Is.
- the inter-refrigerant heat exchanger 206 exchanges heat between the refrigerant flowing from the condenser 202 to the first expansion valve 203 and the refrigerant flowing through the injection pipe 205.
- the injection pipe 205 is provided with a second expansion valve 207, which decompresses one refrigerant flowing into the inter-refrigerant heat exchanger 206 and adjusts the flow rate of the refrigerant flowing through the injection pipe 205.
- the injection piping units 30 and 130 used for the high-pressure refrigerant such as the mixed refrigerant containing the CO2 refrigerant, the R32 refrigerant, and the like.
- FIG. 7 illustrates the case where the injection pipe 205 is heat-exchanged in the inter-refrigerant heat exchanger 206, but is not limited to this as long as it is a circuit for injecting refrigerant into the injection port 12B of the scroll compressor 1.
- various known refrigeration cycle circuits can be used.
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Abstract
Description
以下、図面を参照しながら本発明のスクロール圧縮機の実施形態について説明する。図1は本発明の実施形態1に係るスクロール圧縮機1の断面図、図2は図1のスクロール圧縮機における固定スクロールの一例を示す斜視図、図3は図1のスクロール圧縮機における固定スクロールの一例を示す断面図であり、図1から図3を参照してスクロール圧縮機1について説明する。図1から図3のスクロール圧縮機1は、例えばガス冷媒等の作動流体をスクロール状の圧縮室10Aにおいて圧縮して吐出するものであって、シェル2、主軸3、モータ4、流体圧縮部10を備えている。
Hereinafter, an embodiment of a scroll compressor of the present invention will be described with reference to the drawings. 1 is a sectional view of a
図6は、本発明の実施形態2に係るスクロール圧縮機におけるインジェクション配管ユニットを示す斜視図であり、図6を参照してインジェクション配管ユニット130について説明する。なお、図6のインジェクション配管ユニット130において、図4のインジェクション配管ユニット30と同一の構成を有する部位には、同一の符号を付してその説明を省略する。図6のインジェクション配管ユニット130が、図4のインジェクション配管ユニット30と異なる点は、継ぎ手部材133の構造である。
FIG. 6 is a perspective view showing an injection piping unit in the scroll compressor according to
図7は、本発明のスクロール圧縮機を用いた空気調和装置の実施形態を示す冷媒回路図であり、図7を参照して冷凍サイクル装置200について説明する。冷凍サイクル装置200は、スクロール圧縮機1と、凝縮器202と、減圧装置である第1膨張弁203と、蒸発器204とが冷媒配管により接続されたものである。スクロール圧縮機1は、図1から図6に示すように、冷媒を圧縮するものであって、インジェクションポート12Bが設けられた構造を有している。
FIG. 7 is a refrigerant circuit diagram showing an embodiment of an air-conditioning apparatus using the scroll compressor of the present invention, and the
Claims (8)
- 渦巻き体が設けられ、モータの駆動により揺動運動を行う揺動スクロールと、前記揺動スクロールの渦巻き体に嵌め込まれる渦巻き体を有し、前記揺動スクロールと協働して作動ガスを圧縮する圧縮室を形成する固定スクロールとを備えたスクロール圧縮機であって、
前記固定スクロールは、上部から前記圧縮室に貫通する複数のインジェクションポートを有するものであり、
前記固定スクロールの上部の前記複数のインジェクションポート上に設けられ、前記複数のインジェクションポートに作動流体を供給するインジェクション配管ユニットと
を備え、
前記インジェクション配管ユニットは、
外部から前記複数のインジェクションポートに供給される作動流体が流れる本配管と、
一端が前記本配管に接続され、他端が前記複数のインジェクションポートにそれぞれ接続された複数の枝配管と、
前記本配管と前記複数の枝配管との端部がそれぞれ嵌め込まれて接合された継ぎ手部材と
を有するスクロール圧縮機。 A scroll body provided with a spiral body that swings when driven by a motor, and a spiral body that is fitted into the spiral body of the swing scroll, and compresses the working gas in cooperation with the swing scroll. A scroll compressor comprising a fixed scroll forming a compression chamber,
The fixed scroll has a plurality of injection ports penetrating from the upper part to the compression chamber,
An injection piping unit that is provided on the plurality of injection ports above the fixed scroll and supplies a working fluid to the plurality of injection ports;
The injection piping unit is
A main pipe through which the working fluid supplied to the plurality of injection ports from the outside flows;
A plurality of branch pipes each having one end connected to the main pipe and the other end connected to the plurality of injection ports;
A scroll compressor having a joint member in which ends of the main pipe and the plurality of branch pipes are fitted and joined. - 前記継ぎ手部材は、両端に開口が形成された円筒形状を有し、側壁に穴が形成されたものであり、
前記複数の枝配管は、前記継ぎ手部材の両端の開口に嵌り込んで接合されており、
前記本配管は、前記継ぎ手部材の側壁の穴に嵌り込んで接合されている請求項1に記載のスクロール圧縮機。 The joint member has a cylindrical shape in which openings are formed at both ends, and a hole is formed in a side wall;
The plurality of branch pipes are fitted and joined to openings at both ends of the joint member,
The scroll compressor according to claim 1, wherein the main pipe is fitted into and joined to a hole in a side wall of the joint member. - 前記継ぎ手部材の側壁の穴は、前記本配管が嵌め込まれる嵌め込み部と、前記嵌め込み部よりも小さい径で形成された貫通部とを有することを特徴とする請求項2に記載のスクロール圧縮機。 The scroll compressor according to claim 2, wherein the hole in the side wall of the joint member has a fitting portion into which the main pipe is fitted, and a through portion formed with a smaller diameter than the fitting portion.
- 前記継ぎ手部材の内径は、前記枝配管の外径よりも小さく形成されており、
前記継ぎ手部材の開口には、前記継ぎ手部材の内径よりも大きく形成され前記枝配管を挿入するための挿入部が形成されている請求項2または3に記載のスクロール圧縮機。 An inner diameter of the joint member is formed smaller than an outer diameter of the branch pipe,
4. The scroll compressor according to claim 2, wherein an opening of the joint member is formed to be larger than an inner diameter of the joint member and into which the branch pipe is inserted. - 前記継ぎ手部材は、一方に開口が形成され他方が閉塞している円筒形状を有し、側壁に複数の穴が形成されたものであり、
前記本配管は、前記継ぎ手部材の開口に嵌り込んで接合されており、
前記複数の枝配管は、前記継ぎ手部材の複数の穴にそれぞれ嵌り込んで接合されている請求項1に記載のスクロール圧縮機。 The joint member has a cylindrical shape in which an opening is formed on one side and the other is closed, and a plurality of holes are formed on the side wall.
The main pipe is fitted into and joined to the opening of the joint member,
The scroll compressor according to claim 1, wherein the plurality of branch pipes are fitted into and joined to the plurality of holes of the joint member. - 前記作動流体は、CO2冷媒、R32冷媒を含有する混合冷媒である請求項1~5のいずれか1項に記載のスクロール圧縮機。 The scroll compressor according to any one of claims 1 to 5, wherein the working fluid is a mixed refrigerant containing CO2 refrigerant and R32 refrigerant.
- 前記継ぎ手部材は、鉄製からなるものである請求項1~6のいずれか1項に記載のスクロール圧縮機。 The scroll compressor according to any one of claims 1 to 6, wherein the joint member is made of iron.
- 請求項1~7のいずれか1項に記載の圧縮機を備えた冷凍サイクル装置。 A refrigeration cycle apparatus comprising the compressor according to any one of claims 1 to 7.
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PCT/JP2014/054032 WO2015125253A1 (en) | 2014-02-20 | 2014-02-20 | Scroll compressor and refrigeration cycle device using same |
JP2016503837A JP6218919B2 (en) | 2014-02-20 | 2014-02-20 | Scroll compressor and refrigeration cycle apparatus using the same |
GB1608791.8A GB2538005B (en) | 2014-02-20 | 2014-02-20 | Scroll compressor and refrigeration cycle apparatus using the same |
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PCT/JP2014/054032 WO2015125253A1 (en) | 2014-02-20 | 2014-02-20 | Scroll compressor and refrigeration cycle device using same |
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WO2019087227A1 (en) * | 2017-10-30 | 2019-05-09 | 三菱電機株式会社 | Scroll compressor |
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GB2538005A (en) | 2016-11-02 |
GB2538005B (en) | 2020-06-24 |
JP6218919B2 (en) | 2017-10-25 |
GB201608791D0 (en) | 2016-07-06 |
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