WO2016075731A1 - Scroll compressor - Google Patents
Scroll compressor Download PDFInfo
- Publication number
- WO2016075731A1 WO2016075731A1 PCT/JP2014/079679 JP2014079679W WO2016075731A1 WO 2016075731 A1 WO2016075731 A1 WO 2016075731A1 JP 2014079679 W JP2014079679 W JP 2014079679W WO 2016075731 A1 WO2016075731 A1 WO 2016075731A1
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- WIPO (PCT)
- Prior art keywords
- insertion hole
- buffer member
- scroll
- injection
- diameter
- Prior art date
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Classifications
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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
- F04C18/02—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
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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
- 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
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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
- F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
- F04C27/008—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids for other than working fluid, i.e. the sealing arrangements are not between working chambers of the machine
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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
- F04C29/0007—Injection of a fluid in the working chamber for sealing, cooling and lubricating
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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
- F04C2240/00—Components
- F04C2240/80—Other components
- F04C2240/806—Pipes for fluids; Fittings therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
- F05C2225/04—PTFE [PolyTetraFluorEthylene]
Definitions
- the present invention relates to a scroll compressor.
- Patent Document 1 describes a scroll compressor provided with an injection mechanism for injecting fluid into a compression chamber.
- This scroll compressor has an oil injection port provided in the end plate portion of the fixed scroll.
- An oil injection pipe penetrating the upper lid of the sealed container is connected to the oil injection port.
- a tube insertion hole that is coaxial with the injection port and has a larger diameter than the injection port is formed on the back side of the fixed scroll.
- An annular bottom is formed between the tube insertion hole and the injection port due to the difference in diameter.
- the injection tube is inserted into the tube insertion hole of the fixed scroll before attaching the lid to the body of the sealed container.
- the lid part which penetrated the injection pipe is attached to the trunk
- drum are fixed by welding.
- the injection tube and the lid are fixed by brazing before the lid is completely cooled. For this reason, after the cover part has cooled down, the distal end portion of the injection tube is pressed against the annular bottom due to the difference in heat shrinkage. The stress generated thereby concentrates on the brazed portion between the injection tube and the lid, and therefore the injection tube may be damaged during operation. Therefore, the scroll compressor as described above has a problem that durability is lowered.
- the present invention has been made to solve the above-described problems, and an object thereof is to provide a scroll compressor capable of improving durability.
- a scroll compressor includes a container, a base plate part, and a spiral tooth formed on one surface of the base plate part, and is compressed between the swing scroll.
- a fixed scroll forming a chamber, an insertion hole formed in the other surface of the base plate portion, and an inner diameter smaller than the inner diameter of the insertion hole, and one of the bottom portion of the insertion hole and the base plate portion
- An injection port that penetrates between the surfaces, an injection pipe that passes through the container and is inserted into the insertion hole and injects fluid into the compression chamber via the injection port, and is larger than the inner diameter of the injection port
- An annular buffer member disposed between the injection tube and the bottom of the insertion hole, and the injection tube has an outer diameter larger than the inner diameter of the buffer member;
- a large-diameter portion that contacts the buffer member;
- a small-diameter portion having an outer diameter smaller than the outer diameter of the large-diameter portion and fitted in the buffer member, and the axial dimension of the small-diameter portion is larger
- the present invention it is possible to prevent direct contact between the tip of the injection tube and the bottom of the insertion hole, so that the injection tube can be prevented from being damaged. Therefore, according to the present invention, the durability of the scroll compressor can be improved.
- FIG. 1 It is a longitudinal cross-sectional view which shows the structure of the scroll compressor 1 which concerns on Embodiment 1 of this invention. It is a figure which shows the connection structure of the injection pipe
- FIG. 1 is a longitudinal sectional view showing a configuration of a scroll compressor 1 according to the present embodiment.
- the scroll compressor 1 is a fluid machine that compresses and discharges a fluid (for example, a gas refrigerant).
- a fluid for example, a gas refrigerant.
- the scroll compressor 1 has a configuration in which a compression mechanism unit 30 that compresses a fluid and an electric motor unit 20 that drives the compression mechanism unit 30 are accommodated in an airtight container 10.
- the sealed container 10 has a configuration in which a cylindrical body 10a, a lid 10b attached to the upper end of the body 10a, and a bottom 10c attached to the lower end of the body 10a are fixed to each other by welding or the like. Have. An oil sump 11 is formed at the bottom 10c. The oil sump 11 stores refrigerating machine oil that lubricates each sliding portion.
- a suction pipe 12 that sucks a fluid (for example, a low-pressure gas refrigerant) into the low-pressure space in the sealed container 10 is connected to the body portion 10a.
- a frame 33 is fixed to the upper part of the inner peripheral surface of the trunk portion 10a.
- An electric motor stator 21 of the electric motor unit 20 is fixed below the frame 33 on the inner peripheral surface of the body 10a.
- a sub-frame 38 is fixed below the motor stator 21 on the inner peripheral surface of the body portion 10a.
- the lid 10b is supplied with a fluid (eg, a liquid refrigerant) into a discharge pipe 13 that discharges a compressed fluid (eg, high-pressure gas refrigerant) from the discharge space 14 to the outside of the hermetic container 10 and a compression chamber in the middle of the compression stroke.
- a fluid eg, a liquid refrigerant
- a compressed fluid eg, high-pressure gas refrigerant
- An injection pipe 60 to be injected (details will be described later) is connected. In this example, only one injection tube 60 is provided.
- the electric motor unit 20 drives the orbiting scroll 32 of the compression mechanism unit 30 via the main shaft 40.
- the electric motor unit 20 includes an electric motor stator 21 fixed to the inner peripheral surface of the sealed container 10 and an electric motor rotor 22 fixed to the main shaft 40.
- the electric motor rotor 22 is rotationally driven by energizing the electric motor stator 21, and rotates the main shaft 40 that transmits the driving force to the swing scroll 32.
- an eccentric shaft portion 40a that is rotatably fitted to the rocking bearing 34 of the rocking scroll 32 is formed.
- an oil hole 40 c serving as a flow path for the refrigerating machine oil stored in the oil sump 11 is provided so as to penetrate from the lower end to the upper end of the main shaft 40.
- balancers 48 and 49 for balancing the orbiting scroll 32 with respect to the center of rotation of the main shaft 40 are provided at the upper portion of the main shaft 40 and the lower portion of the motor rotor 22, respectively.
- the compression mechanism unit 30 includes a fixed scroll 31 and a swing scroll 32.
- the fixed scroll 31 is fixed to the frame 33 fixed to the trunk portion 10a.
- the fixed scroll 31 has a base plate portion 31a and involute curvilinear teeth 31b that are erected on one surface (the lower surface in this example) of the base plate portion 31a.
- a seal 43 for preventing fluid leakage is provided at the tip of the spiral tooth 31b.
- a discharge port 31 c that discharges a compressed fluid (for example, a high-pressure gas refrigerant) is formed at the center of the fixed scroll 31.
- a discharge valve 50 having a reed valve structure is provided at the outlet of the discharge port 31c.
- the rocking scroll 32 performs rocking motion without rotating with respect to the fixed scroll 31.
- the orbiting scroll 32 has a base plate portion 32a and involute curvilinear teeth 32b erected on one surface (upper surface in this example) of the base plate portion 32a.
- a seal 44 for preventing fluid leakage is provided at the tip of the spiral tooth 32b.
- a thrust plate 42 serving as a thrust bearing is provided on the other surface (thrust bearing surface) of the base plate portion 32a.
- the thrust bearing surface of the orbiting scroll 32 is supported in the axial direction by the frame 33 via the thrust plate 42.
- a bottomed cylindrical rocking bearing 34 is formed at a substantially central portion of the other surface of the rocking scroll 32.
- a slider 46 that supports the swing scroll 32 is rotatably accommodated to swing the swing scroll 32.
- An eccentric shaft portion 40 a provided at the upper end of the main shaft 40 is inserted into the slider 46 so as to be eccentric with respect to the main shaft 40.
- the fixed scroll 31 and the orbiting scroll 32 are mounted in the sealed container 10 in a state where the spiral teeth 31b and the spiral teeth 32b are engaged with each other.
- a compression chamber 35 is formed between the spiral teeth 31b and the spiral teeth 32b.
- an Oldham ring 36 is disposed between the swing scroll 32 and the frame 33 to prevent the swing scroll 32 from rotating and enable swing motion.
- a key portion 36a formed on the upper surface of the Oldham ring 36 is slidably accommodated in an Oldham groove 45 provided in the orbiting scroll 32, and a key portion (not shown) formed on the lower surface is It is slidably accommodated in an Oldham groove (not shown) provided in the frame 33.
- the frame 33 fixedly supports the fixed scroll 31 and supports the orbiting scroll 32 via a thrust plate 42. Further, the frame 33 rotatably supports an upper portion of the main shaft 40 in the vicinity of the eccentric shaft portion 40a via a main bearing 37 provided in the through hole in the center portion. A sleeve 47 for smoothly rotating the main shaft 40 is rotatably accommodated in the main bearing 37.
- the sub frame 38 is provided below the frame 33 and is fixed to the inner peripheral surface of the sealed container 10.
- the subframe 38 rotatably supports a lower portion of the main shaft 40 through a through hole formed in the center portion.
- a bearing accommodating portion 38a is provided in the through hole.
- An outer ring of a ball bearing 39 for rotatably supporting the main shaft 40 is press-fitted and fixed to the bearing housing portion 38a.
- the sub-frame 38 is provided with a positive displacement oil pump 41 for supplying refrigeration oil to each sliding portion.
- the oil pump 41 is connected to a pump shaft portion 40 b that is provided at the lower end of the main shaft 40 and transmits a rotational force to the oil pump 41.
- the pump shaft portion 40b is integrally formed with the main shaft 40.
- An oil hole 40c provided at the center of the main shaft 40 communicates with the oil pump 41 on the lower end side.
- FIG. 2 is a view showing a connection structure of the injection pipe 60 in the scroll compressor 1 according to the present embodiment.
- an insertion hole 61 having a depth shallower than the thickness of the base plate portion 31a is formed in the upper surface of the base plate portion 31a of the fixed scroll 31 along the thickness direction of the base plate portion 31a.
- an injection port 62 penetrating the base plate portion 31a is formed.
- the fixed scroll 31 of this example is provided with only one injection port 62 for injection.
- the opening end of the injection port 62 on the compression chamber 35 side is located in the middle of the compression stroke in the compression chamber 35.
- the injection port 62 is formed coaxially with the insertion hole 61 and has an inner diameter smaller than the inner diameter of the insertion hole 61.
- the bottom 61 a of the insertion hole 61 has an annular shape surrounding the injection port 62.
- the injection pipe 60 is for injecting fluid into the compression chamber 35 via the injection port 62.
- the injection pipe 60 passes through the through portion 15 formed in the lid portion 10b of the sealed container 10, and is jointed with the joint portion 60a brazed to the lid portion 10b, and the base side of the joint portion 60a (that is, the injection port 62 side). And a piping part 60b to be inserted into the insertion hole 61.
- An annular buffer member 63 is disposed between the injection tube 60 and the bottom 61a of the insertion hole 61.
- the buffer member 63 has, for example, a rectangular cross-sectional shape.
- the buffer member 63 is formed using an elastic material such as resin or rubber, for example.
- the outer diameter of the buffer member 63 is D11
- the inner diameter of the buffer member 63 is D12.
- the outer diameter D11 of the buffer member 63 is at least larger than the inner diameter of the injection port 62, and is the same as the inner diameter of the insertion hole 61 in this example. Accordingly, the buffer member 63 is disposed on the annular bottom portion 61 a in the insertion hole 61. Further, the axial dimension (thickness in the vertical direction in the figure) of the buffer member 63 is L11.
- the buffer member 63 of this example is formed using a material having a Young's modulus (elastic coefficient) smaller than the material for forming the fixed scroll 31 and the injection tube 60.
- the fixed scroll 31 is formed using cast iron (Young's modulus 152.3 GPa)
- the injection tube 60 is formed using brass (Young's modulus 103 GPa).
- the buffer member 63 uses, for example, rubber (Young's modulus 0.01 to 0.1 GPa) whose Young's modulus is sufficiently smaller than that of the above material, polytetrafluoroethylene (Young's modulus 0.5 GPa), or the like. Is formed.
- the piping part 60b of the injection pipe 60 has a large diameter part 60b1 and a small diameter part 60b2 located on the root side of the large diameter part 60b1.
- the small diameter portion 60b2 is formed, for example, by performing a cutting process on the large diameter portion 60b1.
- An O-ring 64 is accommodated in the entire circumferential groove 65. The O-ring 64 is for airtightly separating the injection port 62 and the discharge space 14.
- the outer diameter of the large diameter portion 60b1 is D21.
- the outer diameter of the small diameter part 60b2 is D22 smaller than the outer diameter D21 of the large diameter part 60b1.
- the outer diameter D21 of the large diameter portion 60b1 is the same as or smaller than the inner diameter of the insertion hole 61 and is larger than the inner diameter D12 of the buffer member 63.
- the lower end portion of the large diameter portion 60b1 is in contact with the buffer member 63. Thereby, the buffer member 63 is sandwiched between the lower end portion of the large diameter portion 60 b 1 and the bottom portion 61 a of the insertion hole 61.
- the small diameter portion 60b2 is fitted into the buffer member 63 (including press-fitting). That is, the outer diameter D22 of the small diameter portion 60b2 is substantially the same as or smaller than the inner diameter D12 of the buffer member 63. In this example, the outer diameter D22 of the small diameter portion 60b2 is larger than the inner diameter of the injection port 62, but the outer diameter D22 of the small diameter portion 60b2 may be smaller than the inner diameter of the injection port 62.
- the axial dimension (the length in the vertical direction in the figure) of the small diameter portion 60b2 is L21.
- the axial dimension L21 of the small diameter portion 60b2 is smaller than the axial dimension L11 of the buffer member 63.
- the operation of the scroll compressor 1 in the present embodiment will be described with reference to FIG.
- the motor stator 21 When electric power is supplied to the motor stator 21, the motor rotor 22 rotates together with the main shaft 40.
- the rotational driving force of the main shaft 40 is transmitted to the orbiting scroll 32 via the slider 46.
- the orbiting scroll 32 to which the rotational driving force is transmitted is restricted from rotating by the Oldham ring 36 and performs an orbiting motion with respect to the fixed scroll 31.
- the volume of the compression chamber 35 formed between the fixed scroll 31 and the swing scroll 32 changes.
- a fluid for example, a low-pressure gas refrigerant
- a fluid for example, a low-pressure gas refrigerant
- the compressed fluid passes through the discharge port 31c, pushes up the discharge valve 50 and is discharged into the discharge space 14, and then is discharged from the discharge pipe 13 to the outside.
- a fluid for example, liquid refrigerant
- a fluid having a pressure higher than that in the compression chamber 35
- the injection pipe 60 guides a fluid into the compression chamber 35 in the middle of the compression stroke.
- the amount of fluid in the compression chamber 35 increases and the inside of the compression chamber 35 is cooled.
- the compressed fluid is discharged to the outside from the discharge pipe 13 through the discharge port 31c, the discharge valve 50, and the discharge space 14 as described above.
- the compression mechanism part 30 and the electric motor part 20 produced through a predetermined process are fixed to the inner peripheral surface of the body part 10a using shrink fitting or the like.
- the buffer member 63 is arranged on the bottom 61a of the insertion hole 61 of the fixed scroll 31 (buffer member arranging step).
- the injection tube 60 is inserted into the insertion hole 61 (injection tube insertion step).
- injection tube insertion step the small diameter portion 60b2 of the injection tube 60 is fitted into the buffer member 63, and the lower end portion of the large diameter portion 60b1 is in contact with the buffer member 63.
- the buffer member 63 may be fitted into the small diameter portion 60b2 of the injection pipe 60 before insertion, instead of arranging the buffer member 63 at the bottom 61a of the insertion hole 61.
- the injection pipe 60 is passed through the through portion 15 of the lid portion 10b.
- the lid portion 10b is assembled to the trunk portion 10a (lid portion assembling step).
- drum 10a is carried out over the perimeter (welding process).
- the injection tube 60 and the lid portion 10b are brazed before the lid portion 10b heated in the welding process is cooled to room temperature (brazing step).
- the injection pipe 60 and the lid portion 10b are joined by the brazing portion 15a.
- the scroll compressor 1 is produced through the above steps.
- the scroll compressor 1 includes the sealed container 10 and the spiral teeth that are accommodated in the sealed container 10 and formed on one surface of the base plate portion 31a and the base plate portion 31a.
- a fixed scroll 31 that forms a compression chamber 35 between the rocking scroll 32, an insertion hole 61 formed on the other surface of the base plate portion 31a, and an inner diameter of the insertion hole 61 is smaller.
- An injection port 62 having an inner diameter and penetrating between the bottom 61a of the insertion hole 61 and one surface of the base plate portion 31a, and being inserted into the insertion hole 61 through the sealed container 10 and passing through the injection port 62
- the injection tube 60 has an outer diameter D21 that is larger than the inner diameter D12 of the buffer member 63, and has a large diameter portion 60b1 that contacts the buffer member 63 and an outer diameter D22 that is smaller than the outer diameter D21 of the large diameter portion 60b1. , And a small diameter portion 60b2 fitted in the buffer member 63.
- the axial dimension L21 of the small diameter portion 60b2 is smaller than the axial dimension L11 of the buffer member 63.
- the buffer member 63 can be sandwiched between the injection pipe 60 and the bottom 61a of the insertion hole 61. That is, in the axial direction of the injection pipe 60, the buffer member 63 can exist between the lower end portion of the large diameter portion 60b1 and the bottom portion 61a of the insertion hole 61, and the lower end portion of the small diameter portion 60b2 and the insertion hole A space 66 can exist between the bottom portion 61 a of 61.
- the injection tube 60 and the bottom 61a of the insertion hole 61 are in direct contact with each other. Can be prevented. Thereby, the stress which concentrates on the brazing part 15a can be relieved, and the damage of the injection pipe 60 can be prevented. Therefore, according to the present embodiment, the durability of the scroll compressor 1 can be improved.
- FIG. 3 is a diagram showing a connection structure of the injection pipe 60 in the scroll compressor 1 according to the present embodiment.
- a rubber O-ring 63a is used as a buffer member provided between the injection tube 60 and the bottom 61a of the insertion hole 61.
- Other configurations, operations, and manufacturing steps are the same as those in the first embodiment, and thus description thereof is omitted.
- the same effect as in the first embodiment can be obtained. Furthermore, according to the present embodiment, by using the O-ring 63a as the buffer member, the structure of the scroll compressor 1 can be simplified and the manufacturing cost can be reduced. Further, when the required airtightness is obtained by the O-ring 63a, the formation of the entire circumferential groove 65 and the attachment of the O-ring 64 can be omitted.
- FIG. 4 is a view showing a connection structure of the injection pipe 60 in the scroll compressor 1 according to the present embodiment.
- at least the surface is a buffer formed using polytetrafluoroethylene (PTFE) as a buffer member provided between the injection tube 60 and the bottom 61a of the insertion hole 61.
- PTFE polytetrafluoroethylene
- a member 63b is used.
- Other configurations, operations, and manufacturing steps are the same as those in the first embodiment, and thus description thereof is omitted.
- the entire buffer member 63b may be formed using PTFE, or only the surface thereof may be formed using PTFE.
- the buffer member 63b may be a rubber O-ring whose surface is covered with PTFE.
- PTFE is characterized by high sealing and sliding properties and low dust generation.
- the same effect as in the first embodiment can be obtained. Furthermore, according to the present embodiment, since the slidability of the buffer member 63b can be improved, the pipe assembly property in the injection pipe insertion step can be further improved. Moreover, according to this Embodiment, since the dust generation property of the buffer member 63b can be reduced, the failure of the scroll compressor 1 due to foreign matter contamination can be prevented.
- the present invention is not limited to the above embodiment, and various modifications can be made.
- the vertical scroll compressor 1 is taken as an example, but the present invention can also be applied to a horizontal scroll compressor.
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Abstract
Description
本発明の実施の形態1に係るスクロール圧縮機について説明する。図1は、本実施の形態に係るスクロール圧縮機1の構成を示す縦断面図である。スクロール圧縮機1は、流体(例えば、ガス冷媒)を圧縮して吐出する流体機械であり、例えば冷蔵庫や冷凍庫、自動販売機、空気調和装置、冷凍装置、給湯機等に用いられる冷凍サイクルの構成要素の一つとなるものである。なお、図1を含む以下の図面では、各構成部材の相対的な寸法の関係や形状等が実際のものとは異なる場合がある。 Embodiment 1 FIG.
A scroll compressor according to Embodiment 1 of the present invention will be described. FIG. 1 is a longitudinal sectional view showing a configuration of a scroll compressor 1 according to the present embodiment. The scroll compressor 1 is a fluid machine that compresses and discharges a fluid (for example, a gas refrigerant). One of the elements. In the following drawings including FIG. 1, the relative dimensional relationship and shape of each component may be different from the actual one.
本発明の実施の形態2に係るスクロール圧縮機について説明する。図3は、本実施の形態に係るスクロール圧縮機1におけるインジェクション管60の接続構造を示す図である。図3に示すように、本実施の形態では、インジェクション管60と挿入穴61の底部61aとの間に設けられる緩衝部材として、例えばゴム製のOリング63aが用いられている。その他の構成、動作及び製造工程については、実施の形態1と同様であるので説明を省略する。 Embodiment 2. FIG.
A scroll compressor according to Embodiment 2 of the present invention will be described. FIG. 3 is a diagram showing a connection structure of the
本発明の実施の形態3に係るスクロール圧縮機について説明する。図4は、本実施の形態に係るスクロール圧縮機1におけるインジェクション管60の接続構造を示す図である。図4に示すように、本実施の形態では、インジェクション管60と挿入穴61の底部61aとの間に設けられる緩衝部材として、少なくとも表面がポリテトラフルオロエチレン(PTFE)を用いて形成された緩衝部材63bが用いられている。その他の構成、動作及び製造工程については、実施の形態1と同様であるので説明を省略する。 Embodiment 3 FIG.
A scroll compressor according to Embodiment 3 of the present invention will be described. FIG. 4 is a view showing a connection structure of the
本発明は、上記実施の形態に限らず種々の変形が可能である。
例えば、上記実施の形態では、縦置き型のスクロール圧縮機1を例に挙げたが、本発明は横置き型のスクロール圧縮機にも適用できる。 Other embodiments.
The present invention is not limited to the above embodiment, and various modifications can be made.
For example, in the above embodiment, the vertical scroll compressor 1 is taken as an example, but the present invention can also be applied to a horizontal scroll compressor.
Claims (3)
- 容器と、
前記容器内に収容され、台板部と前記台板部の一方の面に形成された渦巻歯とを有し、揺動スクロールとの間に圧縮室を形成する固定スクロールと、
前記台板部の他方の面に形成された挿入穴と、
前記挿入穴の内径よりも小さい内径を有し、前記挿入穴の底部と前記台板部の一方の面との間を貫通する注入ポートと、
前記容器を貫通して前記挿入穴に挿入され、前記注入ポートを介して前記圧縮室に流体を注入するインジェクション管と、
前記注入ポートの内径よりも大きい外径を有し、前記インジェクション管と前記挿入穴の底部との間に配置された環状の緩衝部材と、
を備え、
前記インジェクション管は、前記緩衝部材の内径よりも大きい外径を有し、前記緩衝部材に当接する大径部と、前記大径部の外径よりも小さい外径を有し、前記緩衝部材内に嵌入された小径部と、を備えており、
前記小径部の軸方向寸法は、前記緩衝部材の軸方向寸法よりも小さいものであるスクロール圧縮機。 A container,
A fixed scroll that is housed in the container, has a base plate portion and a spiral tooth formed on one surface of the base plate portion, and forms a compression chamber between the swing scroll;
An insertion hole formed in the other surface of the base plate part;
An injection port having an inner diameter smaller than the inner diameter of the insertion hole and penetrating between the bottom of the insertion hole and one surface of the base plate part,
An injection pipe that penetrates the container and is inserted into the insertion hole and injects fluid into the compression chamber via the injection port;
An annular buffer member having an outer diameter larger than the inner diameter of the injection port and disposed between the injection tube and the bottom of the insertion hole;
With
The injection pipe has an outer diameter larger than the inner diameter of the buffer member, a large diameter portion that contacts the buffer member, an outer diameter smaller than the outer diameter of the large diameter portion, A small-diameter portion fitted in,
A scroll compressor in which an axial dimension of the small diameter portion is smaller than an axial dimension of the buffer member. - 前記緩衝部材はOリングである請求項1に記載のスクロール圧縮機。 The scroll compressor according to claim 1, wherein the buffer member is an O-ring.
- 前記緩衝部材の少なくとも表面は、PTFEを用いて形成されている請求項1又は請求項2に記載のスクロール圧縮機。 The scroll compressor according to claim 1 or 2, wherein at least a surface of the buffer member is formed using PTFE.
Priority Applications (3)
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GB1701457.2A GB2546897B (en) | 2014-11-10 | 2014-11-10 | Scroll compressor |
JP2016558451A JP6227164B2 (en) | 2014-11-10 | 2014-11-10 | Scroll compressor |
PCT/JP2014/079679 WO2016075731A1 (en) | 2014-11-10 | 2014-11-10 | Scroll compressor |
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PCT/JP2014/079679 WO2016075731A1 (en) | 2014-11-10 | 2014-11-10 | Scroll compressor |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2019087227A1 (en) * | 2017-10-30 | 2019-05-09 | 三菱電機株式会社 | Scroll compressor |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0617676B2 (en) * | 1985-02-15 | 1994-03-09 | 株式会社日立製作所 | Helium scroll compressor |
JPH11107950A (en) * | 1997-10-06 | 1999-04-20 | Matsushita Electric Ind Co Ltd | Injection device of compressor |
JP2001002188A (en) * | 1999-06-23 | 2001-01-09 | Nippon Paint Co Ltd | Sealed cap opener |
JP2012241550A (en) * | 2011-05-17 | 2012-12-10 | Hitachi Appliances Inc | Sealed scroll compressor for helium |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3481158B2 (en) * | 1999-02-24 | 2003-12-22 | 松下電器産業株式会社 | Method of manufacturing X-ray scintillator |
JP4288770B2 (en) * | 1999-07-13 | 2009-07-01 | ダイキン工業株式会社 | Scroll fluid machinery |
JP4966951B2 (en) * | 2008-11-21 | 2012-07-04 | 日立アプライアンス株式会社 | Hermetic scroll compressor |
-
2014
- 2014-11-10 JP JP2016558451A patent/JP6227164B2/en active Active
- 2014-11-10 GB GB1701457.2A patent/GB2546897B/en active Active
- 2014-11-10 WO PCT/JP2014/079679 patent/WO2016075731A1/en active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0617676B2 (en) * | 1985-02-15 | 1994-03-09 | 株式会社日立製作所 | Helium scroll compressor |
JPH11107950A (en) * | 1997-10-06 | 1999-04-20 | Matsushita Electric Ind Co Ltd | Injection device of compressor |
JP2001002188A (en) * | 1999-06-23 | 2001-01-09 | Nippon Paint Co Ltd | Sealed cap opener |
JP2012241550A (en) * | 2011-05-17 | 2012-12-10 | Hitachi Appliances Inc | Sealed scroll compressor for helium |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019087227A1 (en) * | 2017-10-30 | 2019-05-09 | 三菱電機株式会社 | Scroll compressor |
JPWO2019087227A1 (en) * | 2017-10-30 | 2020-06-18 | 三菱電機株式会社 | Scroll compressor |
Also Published As
Publication number | Publication date |
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GB2546897B (en) | 2020-07-08 |
GB2546897A (en) | 2017-08-02 |
JP6227164B2 (en) | 2017-11-08 |
JPWO2016075731A1 (en) | 2017-04-27 |
GB201701457D0 (en) | 2017-03-15 |
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