US20140017107A1 - Scroll compressor - Google Patents
Scroll compressor Download PDFInfo
- Publication number
- US20140017107A1 US20140017107A1 US14/008,150 US201114008150A US2014017107A1 US 20140017107 A1 US20140017107 A1 US 20140017107A1 US 201114008150 A US201114008150 A US 201114008150A US 2014017107 A1 US2014017107 A1 US 2014017107A1
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- United States
- Prior art keywords
- pipe body
- intake
- scroll
- copper
- filter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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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
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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
- 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
- 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
- F05C2201/00—Metals
- F05C2201/04—Heavy metals
- F05C2201/0418—Noble metals
- F05C2201/0421—Silver
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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
- F05C2201/00—Metals
- F05C2201/04—Heavy metals
- F05C2201/0433—Iron group; Ferrous alloys, e.g. steel
- F05C2201/0448—Steel
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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
- F05C2201/00—Metals
- F05C2201/04—Heavy metals
- F05C2201/0469—Other heavy metals
- F05C2201/0475—Copper or alloys thereof
Definitions
- the present invention relates to a scroll type compressor which is provided in an intake pipe with a filter for removing dust mixed possibly in a refrigerant gas flowing through a refrigerant, gas pipe, the intake pipe being connected to the refrigerant gas pipe from an evaporator in a refrigeration cycle so as to draw in the refrigerant gas.
- Scroll type compressors are available as a compressor for drawing in and compressing a refrigerant gas flowing through a refrigerant gas pipe from an evaporator in a refrigeration cycle.
- this scroll type compressor disclosed in Patent Literature 1 listed below is a structure in which an intake pipe 51 made of an integrated material is joined to an end cap 4 A which is a part of a compressor casing. Furthermore, the top part of the intake pipe 51 is fitted into an inlet 18 of a stationary scroll 12 with an O-ring disposed therebetween for preventing leakage of the refrigerant gas.
- the integrated material is typically considered to be steel.
- Patent Literature 2 is an air filter for scroll-type fluid machinery.
- Patent Literature 1 Japanese Patent Application Laid-Open No. 2009-228439
- Patent Literature 2 Japanese Patent Application Laid-Open No. 2008-267142
- the first invention provides a scroll compressor in which an intake pipe for drawing in a refrigerant gas through an external pipe is securely joined to a steel compressor casing by penetrating therethrough, the compressor casing being configured to house a stationary scroll and a swingable scroll; and the lower end part of the intake pipe is fitted into an intake portion with an O-ring disposed therebetween, the intake portion being provided in the stationary scroll.
- the scroll compressor is characterized in that the intake pipe is configured to have a steel iron pipe body on the intake portion side and a copper pipe body joined to the upper end part of the iron pipe body, the copper pipe body being made of copper or another metal the surface of which is plated with copper; the copper pipe body of the intake pipe is silver-brazed to the compressor casing; and a filter for removing dust mixed in the refrigerant gas is installed in the intake pipe.
- the second invention provides a scroll compressor An which an intake pipe for drawing in a refrigerant gas through an external pipe is securely joined to a steel compressor casing by penetrating therethrough, the compressor casing being configured to house a stationary scroll and a swingable scroll; and the lower end part of the intake pipe is fitted into an intake portion with an O-ring disposed. therebetween, the intake portion being provided in the stationary scroll.
- the scroll compressor is characterized in that the intake pipe is configured to have a steel iron pipe body on the intake portion side and a copper pipe body joined to the upper end part of the iron pipe body, the copper pipe body being made of copper or another metal the surface of which is plated.
- the copper pipe body of the intake pipe is silver-brazed to the compressor easing; a stepped portion which has an inner diameter equal to or less than the minimum inner diameter of the copper pipe body and which is opened toward the copper pipe body is provided inside the iron pipe body; and the opening edge portion of a filter for removing dust mixed in the refrigerant gas has an outer diameter which allows for passing through a region of the minimum inner diameter, with the opening edge portion of the filter press-fitted into the stepped portion.
- the third invention is configured such that the filter of the first or second invention is formed by soldering.
- a fourth invention is configured such that the filter of the first or second invention is a mesh of thin metal wire, and the opening edge portion is formed by securely caulking a region into which the opening edge portion of the body of the filter is outwardly turned over.
- the fifth invention provides a scroll compressor in which an intake pipe for drawing in a refrigerant gas through an external pipe is securely joined to a steel compressor casing by penetrating therethrough, the compressor casing being configured to house a stationary scroll and a swingable scroll; and the lower end part of the intake pipe is fitted into an intake portion with an O-ring disposed therebetween, the intake portion being provided in the stationary scroll.
- the scroll compressor is characterized in that the intake pipe is configured to have a steel iron pipe body on the intake portion side and a copper pipe body joined to the upper end part of the iron pipe body, the copper pipe body being made of copper or another metal the surface of which is plated with copper; the copper pipe body of the intake pipe is silver-brazed to the compressor casing; and the opening edge portion of a filter for removing dust mixed in the refrigerant gas is sandwiched between the iron pipe body and the copper pipe body in a joint area thereof.
- the intake pipe is configured to have an iron pipe body as the lower side and a copper pipe body as the upper side, with the copper pipe body silver-brazed to the steel compressor casing.
- heat generated during the silver brazing can be made lower in temperature than heat produced during welding. It is thus possible to prevent thermal damage to the O-ring even during fabrication/manufacture with the O-ring pre-mounted on the intake pipe.
- the intake pipe is formed of two parts, i.e., the iron pipe body and the copper pipe body, it is possible to install the filter in the intake pipe as a passing work when these two parts are joined together to form the intake pipe. That is, the filter can be installed with favorable work efficiency.
- the intake pipe is configured to have an iron pipe body as the lower side and a copper pipe body as the upper side, with the copper pipe body silver-brazed to the steel compressor casing.
- heat generated during the silver brazing can be made lower in temperature than heat produced during welding. It is thus possible to prevent thermal damage to the O-ring even during fabrication/manufacture with the O-ring pre-mounted on the intake pipe.
- the intake pipe is formed of two parts, i.e., the iron pipe body and the copper pipe body, it is possible to provide a stepped portion inside the iron pipe body when the intake pipe is in the form of parts.
- the inner diameter of the stepped portion is equal to or less than the minimum inner diameter of the copper pipe body, the iron pipe body and the copper pipe body can he joined together and thereafter, the filter can be inserted from the copper pipe body side (from above) so as to press fit the opening edge portion into the stepped portion.
- forming the intake pipe of the two parts makes it possible to facilitate installation of the filter as a passing work, i.e., with favorable installation work efficiency.
- the filter is formed by soldering.
- the filter can be press fitted after the iron pipe body and the copper pipe body are joined together as well as the copper pipe body of the intake pipe is silver-brazed to the compressor casing. It is thus possible to prevent the filter from being subjected to heat produced during joining each portion together. This also prevents the solder from being melted and thermal damage to the filter.
- the filter is a mesh of thin metal wire.
- the filter can be press fitted. After the iron pipe body and the copper pipe body are joined together as well as the copper pipe body of the intake pipe is silver-brazed to the compressor casing. It is thus possible to prevent the filter from being subjected to heat produced during joining each portion together. This also prevents thermal damage to the thin metal wire, that is, the filter.
- the intake pipe is configured to have an iron pipe body as the lower side and a copper pipe body as the upper side, with the copper pipe body silver-brazed to the steel compressor casing.
- heat generated during the silver brazing can be made lower in temperature than heat produced during welding. It is thus possible to prevent thermal damage to the O-ring even during fabrication/manufacture with the O-ring pre-mounted on the intake pipe.
- the. intake pipe is formed of two parts, i.e., the iron pipe body and the copper pipe body, the opening edge portion of the filter can be sandwiched between the iron pipe body and the copper pipe body in the joint area thereof by a passing work when these two parts are joined together to form the intake pipe.
- the filter can be installed with favorable installation work efficiency.
- FIG. 1 is a longitudinal sectional view illustrating a scroll compressor according to the present invention.
- FIG. 2 is an enlarged view illustrating a main portion of the scroll compressor of FIG. 1 .
- FIG. 3 is a further enlarged longitudinal sectional view illustrating the main portion of FIG. 2 .
- FIG. 4 is a longitudinal sectional view illustrating a modified embodiment of FIG. 3 .
- FIG. 1 Scroll type compressors are connected to a refrigerant gas pipe P from an evaporator in a refrigerant circuit (not shown) through which a refrigerant circulates to perform a refrigeration cycle operation, and are configured to compress a refrigerant gas.
- This compressor has a compressor casing 10 which is of a hermetically sealed dome type with a vertically elongated cylindrical shape.
- the compressor casing 10 which is constructed as a pressure vessel, is made up of a casing body 12 being a cylindrical barrel section that has an axial line extending in the vertical direction; an upper end cap 14 which is integrally welded thereto so as to hermetically seal the upper end thereof and which is bowl-shaped to be protruded upwardly; and a lower end cap (bottom) 16 which is integrally welded to the casing body 12 so as to hermetically seal the lower end thereof and which is bowl-shaped to be protruded downwardly.
- a scroll type compression mechanism 20 for compressing the refrigerant gas
- a driving motor 30 which is disposed below the scroll type compression mechanism 20 .
- the scroll type compression mechanism 20 and the driving motor 30 are coupled to each other by means of a driving shaft 36 which extends in the vertical direction within the compressor casing 10 and serves as the output shaft of the driving motor 30 .
- the scroll type compression mechanism 20 includes an annular main frame 40 ; a stationary scroll 22 disposed in close contact with the upper surface of the main frame 40 ; and a swingable scroll 24 disposed between the stationary scroll 22 and the main frame 40 so as to be swingingly engaged with the stationary scroll 22 .
- the main frame 40 is secured, on the entire outer peripheral surface thereof, to the casing body 12 .
- the main frame 40 divides inside the compressor casing 10 into the high-pressure space KK below the main frame 40 and a discharge space TK above the main frame 40 .
- the spaces KK and TK are in communication with each other via a vertical groove N which is formed to vertically extend through each of the circumferential portions of the main frame 40 and the stationary scroll 22 .
- the refrigerant gas compressed with the scroll type compressor 20 to a high pressure flows sequentially through the discharge space TK, the vertical groove N, and the high-pressure space KK.
- the main frame 40 has, at the center of the lower surface, a bearing unit 40 T which bears the driving shaft 36 rotatably on a radial bearing 39 and is protruded downwardly. Furthermore, the driving shaft 36 is integrally provided, on the upper end, with an eccentric shaft portion 38 which has a center axis line that is decentered from the center axis line of the driving shaft 36 . The eccentric shaft portion 38 is inserted into a cylindrical. boss portion 24 B, which is protruded downwardly at the center of the lower, surface of an end plate 24 A of the swingable scroll 24 , allowing the eccentric shaft portion 38 and the boss portion 24 B to be relatively rotatable.
- the main frame 40 is provided with a space 40 H which is formed above and in communication with the hole of the bearing unit 40 T, the space 40 H allowing the boss portion 24 B of the swingable scroll 24 having received the eccentric shaft portion 38 to be rotatable.
- a bearing plate 41 which allows the lower end part of the driving shaft 36 to be rotatably fitted therein and thereby supported.
- a tubular steel mount pipe 14 Z which is welded thereto so as to pierce therethrough with the center axis line oriented in the vertical direction.
- an intake pipe 50 which passes through the mount pipe 14 Z, the intake pipe 50 being adapted to draw the refrigerant gas from the refrigerant gas pipe P of the refrigerant circuit into the scroll type compression mechanism 20 .
- the casing body 12 is provided hermetically with a discharge pipe 70 which discharges the refrigerant gas in the high-pressure space KK inside the compressor casing 10 out of the compressor casing 10 and which is secured to the casing body 12 so as to penetrate therethrough.
- the intake pipe 50 extends through the discharge space TK in the vertical direction, and the lower end part thereof is fitted into an intake portion 22 K with an O-ring 60 disposed therebetween, the intake portion 22 K being provided in an end plate 22 A of the stationary scroll 22 .
- the intake portion 22 K is in communication with a hole portion 2211 that penetrates the end plate 22 A in such a manner as to feed the refrigerant gas into a compression chamber 26 that is defined by a lap 22 R of the stationary scroll 22 and a lap 24 R of the swingable scroll 24 .
- the refrigerant gas is drawn into the. compression chamber 26 .
- the driving motor 30 is an alternating-current motor which includes an annular stator 32 secured to the inner wall surface of the compressor casing 10 and a rotor 34 rotatably disposed inside the stator 32 , with the aforementioned driving shaft 36 secured to the rotor 34 .
- the driving shaft 36 causes the eccentric shaft portion 38 to be rotated, thereby driving the aforementioned swingable scroll 24 .
- the swingable scroll 24 is driven, the swingable scroll 24 is pivoted (swung) while being restricted from rotating around its own axis, due to the operation of a known Oldham. ring 28 .
- the pivotal motion is produced in a circle, n with the radius being the amount of the eccentricity of the eccentric shaft: portion 38 relative to the driving shaft 36 .
- the driving shaft 36 is provided with a pickup (not shown) which is linked to the lower end so as to pick up the oil stored in the inner bottom. portion of the lower end cap 16 .
- the picked-up oil is supplied to the oil, chamber 80 KK below the swingable scroll 24 through the oil feeding passage 80 in the driving shaft 36 , and then. supplied from the oil chamber 80 KK to each sliding portion of the scroll type compression mechanism 20 and the compression chamber 26 through a communication passage 24 AR that is provided in the swingable scroll 24 .
- the stationary scroll 22 has the end plate 22 A and the aforementioned spiral, i.e., involute lap 22 R which is formed on the lower surface of the end plate 22 A.
- the swingable scroll 24 has the end plate 24 A and the aforementioned spiral, i.e., involute lap 24 R which is formed on the upper surface of the end plate 24 A, Further, the lap 22 R of the stationary scroll 22 and the lap 24 R of the swingable scroll 24 are opposed so as to be swingingly engaged with each other, whereby both the laps 22 R and 24 R form three or an appropriate number of compress. on chambers 26 between the stationary scroll 22 and the swingable scroll 24 .
- the driving shaft 36 located below the bearing unit 40 T of the main frame 40 is provided with a balance weight 37 for maintaining dynamic balance with the swingable scroll 24 or the eccentric shaft portion 38 or the like, so that the swingable scroll 24 is pivoted without being rotated around its own axis while balance is being maintained with the balance weight 31 .
- the compression chamber 26 is configured to compress the refrigerant gas drawn in through the intake pipe 50 to a higher pressure by contracting the volume between both the laps 22 R and 24 R toward the center of the stationary scroll 22 as the swingable scroll 24 is pivoted.
- the stationary scroll 22 is provided at the center with a discharge hole TP.
- the high-pressure refrigerant gas discharged from the discharge hole TP is discharged into the discharge space TK through the discharge valve 42 .
- the high-pressure refrigerant gas flows into the high-pressure space KK below the main frame 40 through the aforementioned vertical groove M which is provided. in each outer circumferential portion of the main frame 40 and the stationary scroll 22 .
- the high-pressure refrigerant gas is discharged out of the compressor casing 10 through the discharge pipe 70 provided on the casing body 12 .
- FIG. 2 showing an enlarged view of the upper end cap 14 and the intake pipe 50 of the scroll type compressor described above and to FIG. 3 showing an enlarged view of the intake pipe 50 .
- an iron pipe body 54 made of steel in an appropriate length and a copper pipe body 52 made of copper or another metal such as steel plated with copper in an appropriate length were prepared for the intake pipe 50 .
- the copper pipe body 52 is less in thickness than the iron pipe body 54 .
- the copper pipe body of this example is half or less in thickness than the iron pipe body 54 .
- the iron pipe body 54 is provided on the lower outer circumference with an annular groove 54 M along which the O-ring 60 is installed, and the lower end outer circumferential portion is formed into a tapered. guide portion 54 G.
- the intake portion 22 K provided in the end plate 22 A of the stationary scroll 22 on the main body side of the scroll type compressor is formed into a guide portion with the inlet edge portion increased in diameter toward the top (upwardly), so that this guide portion and the above-mentioned guide portion 54 G facilitate insertion of the intake pipe 50 into the intake portion 22 K.
- a joint area 54 A which is the upper end part of the iron pipe body 54 is provided with an upwardly-opened first stepped portion 54 D′, into which a joint area 52 A of the lower end part of the copper pipe body 52 is fitted and to which the joint area 52 A is silver-brazed with a silver braze Y 2 .
- a second stepped portion 54 D which is opened (upwardly) toward the copper pipe body 52 .
- the inner diameter D 2 of the second stepped portion 54 D is equal to or less than the minimum inner diameter Di of the copper pipe body 52 .
- the outer diameter of an inlet opening edge portion FA of a basket-like filter F (the maximum outer diameter of the filter F) for removing dust mixed in the refrigerant gas is sized to be capable of passing through a region of the minimum inner diameter D 1 of the copper pipe body 52 as well as being press-fitted into the second stepped portion 54 D.
- FIG. 3 is a view showing the press-fitted filter F.
- the filter F of this example is formed of a mesh of thin stainless steel wire, so that the inlet opening edge portion FA is formed by a turnover of the mesh being caulked.
- a filter F according to another embodiment is also available.
- the inlet opening edge portion FA it is also acceptable to employ a stainless-steel annular plate and solder this plate to an appropriate filter body.
- the appropriate filter body it is acceptable to solder a plurality of filter body elements divided in the circumferential direction so as to join the elements together.
- the structure in which the filter F is press-fitted allows the filter F to be inserted and press-fitted into the intake pipe 50 after each part has been joined together.
- the filter F provided by soldering the problem with the solder being melted can be prevented.
- the filter F made of a wire material reduced in diameter the thermal damage to the wire material can be prevented.
- the inlet opening edge portion FA can be installed by being sandwiched between the lower end bottom surface of the first stepped portion 54 D′ and the lower end of the copper pipe body 52 , i.e., the lower end of the joint area 52 A.
- the inlet opening edge portion FA is preferably formed in the shape of a so-called flange that is expanded sideward, which would facilitate sandwiching of the inlet opening edge portion FA.
- the inlet opening edge portion FA needs to be sandwiched before being silver-brazed with the silver braze Y 2 .
- the filter F requiring no soldering would be preferable.
- the present invention it is able to save the trouble of providing in a prescribed manner such a filter F into another pipe such as the refrigerant gas pipe P.
- FIG. 4 As another embodiment for press-fitting the opening edge portion FA of the filter F into the stepped portion, there is also available an embodiment of FIG. 4 which is different from that of FIG. 3 . That is, the joint area 52 A or the lower end part of the copper pipe body 52 is fitted into and silver-brazed with the silver braze Y 2 to the first stepped portion 54 D′ of the iron pipe body 54 , in the case of which the size of the step of the first stepped portion 54 D′ is greater by an appropriate size than the thickness of the joint area 52 A.
- the filter F is press-fitted so that the opening edge portion FA is placed on the step surface that remains inward of the joint area 52 A.
- the matters in the embodiment of FIG. 4 are the same as described in relation to the embodiment of FIG. 3 except that the opening edge portion FA is press fitted not into the second stepped portion 540 but into the first, step portion 54 D′.
- the steel mount pipe 14 Z is welded to the steel upper end cap 14 by arc welding as described above (the built-up portion denoted by reference number Y 1 ).
- the intake pipe 50 is fitted into the mount pipe 14 Z, so that the fitted portion of the copper pipe body 52 is silver-brazed with a silver braze Y 3 to the mount pipe 14 Z.
- the upper end cap assembly is formed. Since this allows the O-ring 60 to remain detached while the intake pipe 50 is being securely joined to the upper end cap 14 , it is possible to prevent thermal. damage to the O-ring caused by heat. produced during the joining work.
- the present invention not the aforementioned sequence of manufacture/fabrication but the following one may he employed.
- the intake pipe 50 may be fabricated in a manner such that the lower end part thereof is fitted into the intake portion 22 K provided in the end. plate 22 A of the stationary scroll 22 with the O-ring 60 disposed therebetween; after that, the upper part of the intake e pipe 50 is passed through the mount pipe 14 Z welded to the upper end cap 14 ; and then the fitted portion of the copper pipe body 52 is silver-brazed thereto with the silver braze Y 3 .
- the silver brazing Y 3 can be performed at a temperature lower than that for the arc welding, and thus thermal damage to the O-ring 60 can also he prevented or reduced.
- a stepped portion 14 D having a step bottom surface 14 S is formed on the outer side of the peripheral lower end part of the upper end cap 14 , so that the stepped portion 14 D is fitted into the upper end part of the casing body 12 and then arc welded thereto (reference number Y 4 of FIG. 1 ).
- the present invention is applicable to the scroll type compressor.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Rotary Pumps (AREA)
Abstract
A scroll compressor which is capable of preventing thermal damage to an O-ring and has a filter arrangement structure with favorable installation work efficiency is provided. The compressor is configured such that an intake pipe (50) for drawing in a refrigerant gas through an external pipe (P) is securely joined to a steel compressor casing (10) by penetrating therethrough, the compressor casing housing a stationary scroll (22) and a swingable scroll (24); and the lower end part of the intake pipe is fitted into an intake portion (22K) with an O-ring (60) disposed therebetween, the intake portion being provided in the stationary scroll. The intake pipe is configured to have a steel iron pipe body (54) on the intake portion side and a copper pipe body (52) joined to the upper end part of the iron pipe body. The copper pipe body of the intake pipe is silver-brazed (13) to the compressor casing, and a filter (F) is installed in the intake pipe.
Description
- The present invention relates to a scroll type compressor which is provided in an intake pipe with a filter for removing dust mixed possibly in a refrigerant gas flowing through a refrigerant, gas pipe, the intake pipe being connected to the refrigerant gas pipe from an evaporator in a refrigeration cycle so as to draw in the refrigerant gas.
- Scroll type compressors are available as a compressor for drawing in and compressing a refrigerant gas flowing through a refrigerant gas pipe from an evaporator in a refrigeration cycle. As this scroll type compressor, disclosed in Patent Literature 1 listed below is a structure in which an intake pipe 51 made of an integrated material is joined to an end cap 4A which is a part of a compressor casing. Furthermore, the top part of the intake pipe 51 is fitted into an inlet 18 of a
stationary scroll 12 with an O-ring disposed therebetween for preventing leakage of the refrigerant gas. Note that the integrated material is typically considered to be steel. Furthermore, disclosed in Patent Literature 2 is an air filter for scroll-type fluid machinery. - Patent Literature 1: Japanese Patent Application Laid-Open No. 2009-228439
- Patent Literature 2: Japanese Patent Application Laid-Open No. 2008-267142
- However, when the intake pipe is made of steel as disclosed. in Patent Literature 1 and is welded to the end cap made of steel, welding heat may cause thermal damage to the O-ring. Furthermore, in the refrigeration cycle, as disclosed in Patent. Literature 2 above, it is necessary to install a filler somewhere in the refrigerant, piping circuit in order to remove dust in the refrigerant gas. It would be preferable to be capable of placing this filter by efficient work.
- It is therefore an object of the invention to solve the problem by providing a scroll compressor which is capable of preventing thermal. damage to an O-ring and which has a filter arrangement structure with favorable installation work efficiency.
- In view of the aforementioned problem, the first invention provides a scroll compressor in which an intake pipe for drawing in a refrigerant gas through an external pipe is securely joined to a steel compressor casing by penetrating therethrough, the compressor casing being configured to house a stationary scroll and a swingable scroll; and the lower end part of the intake pipe is fitted into an intake portion with an O-ring disposed therebetween, the intake portion being provided in the stationary scroll. The scroll compressor is characterized in that the intake pipe is configured to have a steel iron pipe body on the intake portion side and a copper pipe body joined to the upper end part of the iron pipe body, the copper pipe body being made of copper or another metal the surface of which is plated with copper; the copper pipe body of the intake pipe is silver-brazed to the compressor casing; and a filter for removing dust mixed in the refrigerant gas is installed in the intake pipe.
- The second invention, an aspect of the first invention, provides a scroll compressor An which an intake pipe for drawing in a refrigerant gas through an external pipe is securely joined to a steel compressor casing by penetrating therethrough, the compressor casing being configured to house a stationary scroll and a swingable scroll; and the lower end part of the intake pipe is fitted into an intake portion with an O-ring disposed. therebetween, the intake portion being provided in the stationary scroll. The scroll compressor is characterized in that the intake pipe is configured to have a steel iron pipe body on the intake portion side and a copper pipe body joined to the upper end part of the iron pipe body, the copper pipe body being made of copper or another metal the surface of which is plated. with copper; the copper pipe body of the intake pipe is silver-brazed to the compressor easing; a stepped portion which has an inner diameter equal to or less than the minimum inner diameter of the copper pipe body and which is opened toward the copper pipe body is provided inside the iron pipe body; and the opening edge portion of a filter for removing dust mixed in the refrigerant gas has an outer diameter which allows for passing through a region of the minimum inner diameter, with the opening edge portion of the filter press-fitted into the stepped portion.
- The third invention is configured such that the filter of the first or second invention is formed by soldering.
- A fourth invention is configured such that the filter of the first or second invention is a mesh of thin metal wire, and the opening edge portion is formed by securely caulking a region into which the opening edge portion of the body of the filter is outwardly turned over.
- The fifth invention, an aspect of the first invention, provides a scroll compressor in which an intake pipe for drawing in a refrigerant gas through an external pipe is securely joined to a steel compressor casing by penetrating therethrough, the compressor casing being configured to house a stationary scroll and a swingable scroll; and the lower end part of the intake pipe is fitted into an intake portion with an O-ring disposed therebetween, the intake portion being provided in the stationary scroll. The scroll compressor is characterized in that the intake pipe is configured to have a steel iron pipe body on the intake portion side and a copper pipe body joined to the upper end part of the iron pipe body, the copper pipe body being made of copper or another metal the surface of which is plated with copper; the copper pipe body of the intake pipe is silver-brazed to the compressor casing; and the opening edge portion of a filter for removing dust mixed in the refrigerant gas is sandwiched between the iron pipe body and the copper pipe body in a joint area thereof.
- In the first invention, the intake pipe is configured to have an iron pipe body as the lower side and a copper pipe body as the upper side, with the copper pipe body silver-brazed to the steel compressor casing. Thus, heat generated during the silver brazing can be made lower in temperature than heat produced during welding. It is thus possible to prevent thermal damage to the O-ring even during fabrication/manufacture with the O-ring pre-mounted on the intake pipe. Furthermore, since the intake pipe is formed of two parts, i.e., the iron pipe body and the copper pipe body, it is possible to install the filter in the intake pipe as a passing work when these two parts are joined together to form the intake pipe. That is, the filter can be installed with favorable work efficiency.
- In the second invention, the intake pipe is configured to have an iron pipe body as the lower side and a copper pipe body as the upper side, with the copper pipe body silver-brazed to the steel compressor casing. Thus, heat generated during the silver brazing can be made lower in temperature than heat produced during welding. It is thus possible to prevent thermal damage to the O-ring even during fabrication/manufacture with the O-ring pre-mounted on the intake pipe. Furthermore, since the intake pipe is formed of two parts, i.e., the iron pipe body and the copper pipe body, it is possible to provide a stepped portion inside the iron pipe body when the intake pipe is in the form of parts. Since the inner diameter of the stepped portion is equal to or less than the minimum inner diameter of the copper pipe body, the iron pipe body and the copper pipe body can he joined together and thereafter, the filter can be inserted from the copper pipe body side (from above) so as to press fit the opening edge portion into the stepped portion. Thus, forming the intake pipe of the two parts makes it possible to facilitate installation of the filter as a passing work, i.e., with favorable installation work efficiency.
- In the third invention, the filter is formed by soldering. The filter can be press fitted after the iron pipe body and the copper pipe body are joined together as well as the copper pipe body of the intake pipe is silver-brazed to the compressor casing. It is thus possible to prevent the filter from being subjected to heat produced during joining each portion together. This also prevents the solder from being melted and thermal damage to the filter.
- In the fourth invention, the filter is a mesh of thin metal wire. The filter can be press fitted. after the iron pipe body and the copper pipe body are joined together as well as the copper pipe body of the intake pipe is silver-brazed to the compressor casing. It is thus possible to prevent the filter from being subjected to heat produced during joining each portion together. This also prevents thermal damage to the thin metal wire, that is, the filter.
- In the fifth invention, the intake pipe is configured to have an iron pipe body as the lower side and a copper pipe body as the upper side, with the copper pipe body silver-brazed to the steel compressor casing. Thus, heat generated during the silver brazing can be made lower in temperature than heat produced during welding. It is thus possible to prevent thermal damage to the O-ring even during fabrication/manufacture with the O-ring pre-mounted on the intake pipe. Furthermore, since the. intake pipe is formed of two parts, i.e., the iron pipe body and the copper pipe body, the opening edge portion of the filter can be sandwiched between the iron pipe body and the copper pipe body in the joint area thereof by a passing work when these two parts are joined together to form the intake pipe. Thus, the filter can be installed with favorable installation work efficiency.
-
FIG. 1 is a longitudinal sectional view illustrating a scroll compressor according to the present invention. -
FIG. 2 is an enlarged view illustrating a main portion of the scroll compressor ofFIG. 1 . -
FIG. 3 is a further enlarged longitudinal sectional view illustrating the main portion ofFIG. 2 . -
FIG. 4 is a longitudinal sectional view illustrating a modified embodiment ofFIG. 3 . - Now, the present invention will be described in more detail with reference to the accompanying drawings. First, reference will be made to
FIG. 1 . Scroll type compressors are connected to a refrigerant gas pipe P from an evaporator in a refrigerant circuit (not shown) through which a refrigerant circulates to perform a refrigeration cycle operation, and are configured to compress a refrigerant gas. This compressor has acompressor casing 10 which is of a hermetically sealed dome type with a vertically elongated cylindrical shape. Thecompressor casing 10, which is constructed as a pressure vessel, is made up of acasing body 12 being a cylindrical barrel section that has an axial line extending in the vertical direction; anupper end cap 14 which is integrally welded thereto so as to hermetically seal the upper end thereof and which is bowl-shaped to be protruded upwardly; and a lower end cap (bottom) 16 which is integrally welded to thecasing body 12 so as to hermetically seal the lower end thereof and which is bowl-shaped to be protruded downwardly. - Housed inside the
compressor casing 10 are a scrolltype compression mechanism 20 for compressing the refrigerant gas; and a drivingmotor 30 which is disposed below the scrolltype compression mechanism 20. The scrolltype compression mechanism 20 and the drivingmotor 30 are coupled to each other by means of a drivingshaft 36 which extends in the vertical direction within thecompressor casing 10 and serves as the output shaft of the drivingmotor 30. There is also formed a high-pressure space KK between the scrolltype compression mechanism 20 and the drivingmotor 30. - The scroll
type compression mechanism 20 includes an annularmain frame 40; astationary scroll 22 disposed in close contact with the upper surface of themain frame 40; and aswingable scroll 24 disposed between thestationary scroll 22 and themain frame 40 so as to be swingingly engaged with thestationary scroll 22. Themain frame 40 is secured, on the entire outer peripheral surface thereof, to thecasing body 12. Furthermore, themain frame 40 divides inside thecompressor casing 10 into the high-pressure space KK below themain frame 40 and a discharge space TK above themain frame 40. The spaces KK and TK are in communication with each other via a vertical groove N which is formed to vertically extend through each of the circumferential portions of themain frame 40 and thestationary scroll 22. The refrigerant gas compressed with thescroll type compressor 20 to a high pressure flows sequentially through the discharge space TK, the vertical groove N, and the high-pressure space KK. - The
main frame 40 has, at the center of the lower surface, abearing unit 40T which bears the drivingshaft 36 rotatably on aradial bearing 39 and is protruded downwardly. Furthermore, the drivingshaft 36 is integrally provided, on the upper end, with aneccentric shaft portion 38 which has a center axis line that is decentered from the center axis line of the drivingshaft 36. Theeccentric shaft portion 38 is inserted into a cylindrical.boss portion 24B, which is protruded downwardly at the center of the lower, surface of anend plate 24A of theswingable scroll 24, allowing theeccentric shaft portion 38 and theboss portion 24B to be relatively rotatable. Themain frame 40 is provided with aspace 40H which is formed above and in communication with the hole of thebearing unit 40T, thespace 40H allowing theboss portion 24B of theswingable scroll 24 having received theeccentric shaft portion 38 to be rotatable. Below the drivingmotor 30, there is provided abearing plate 41 which allows the lower end part of the drivingshaft 36 to be rotatably fitted therein and thereby supported. - Furthermore, as already mentioned above, at a predetermined position of the
upper end cap 14 of thecompressor casing 10, there is provided a tubularsteel mount pipe 14Z which is welded thereto so as to pierce therethrough with the center axis line oriented in the vertical direction. As will be described in more detail later, there is securely provided anintake pipe 50 which passes through themount pipe 14Z, theintake pipe 50 being adapted to draw the refrigerant gas from the refrigerant gas pipe P of the refrigerant circuit into the scrolltype compression mechanism 20. Furthermore, thecasing body 12 is provided hermetically with adischarge pipe 70 which discharges the refrigerant gas in the high-pressure space KK inside thecompressor casing 10 out of thecompressor casing 10 and which is secured to thecasing body 12 so as to penetrate therethrough. Theintake pipe 50 extends through the discharge space TK in the vertical direction, and the lower end part thereof is fitted into anintake portion 22K with an O-ring 60 disposed therebetween, theintake portion 22K being provided in anend plate 22A of thestationary scroll 22. Furthermore, theintake portion 22K is in communication with a hole portion 2211 that penetrates theend plate 22A in such a manner as to feed the refrigerant gas into acompression chamber 26 that is defined by alap 22R of thestationary scroll 22 and alap 24R of theswingable scroll 24. In this mariner, the refrigerant gas is drawn into the.compression chamber 26. - In this example, the driving
motor 30 is an alternating-current motor which includes anannular stator 32 secured to the inner wall surface of thecompressor casing 10 and a rotor 34 rotatably disposed inside thestator 32, with theaforementioned driving shaft 36 secured to the rotor 34. When being rotated, the drivingshaft 36 causes theeccentric shaft portion 38 to be rotated, thereby driving the aforementionedswingable scroll 24, When theswingable scroll 24 is driven, theswingable scroll 24 is pivoted (swung) while being restricted from rotating around its own axis, due to the operation of a known Oldham.ring 28. The pivotal motion is produced in a circle, n with the radius being the amount of the eccentricity of the eccentric shaft:portion 38 relative to the drivingshaft 36. - There is a lower space UK which is located below the driving
motor 30 and kept at a high pressure, and some oil is stored in the inner bottom portion of thelower end cap 16 that defines the lower space UK. There is formed anoil feeding passage 80 as part of high-pressure oil feeding means within the drivingshaft 36, and theoil feeding passage 80 is in communication with an oil chamber 80KK on the lower surface of theend plate 24A of theswingable scroll 24. The drivingshaft 36 is provided with a pickup (not shown) which is linked to the lower end so as to pick up the oil stored in the inner bottom. portion of thelower end cap 16. The picked-up oil is supplied to the oil, chamber 80KK below theswingable scroll 24 through theoil feeding passage 80 in the drivingshaft 36, and then. supplied from the oil chamber 80KK to each sliding portion of the scrolltype compression mechanism 20 and thecompression chamber 26 through a communication passage 24AR that is provided in theswingable scroll 24. - The
stationary scroll 22 has theend plate 22A and the aforementioned spiral, i.e.,involute lap 22R which is formed on the lower surface of theend plate 22A. On the other hand, theswingable scroll 24 has theend plate 24A and the aforementioned spiral, i.e.,involute lap 24R which is formed on the upper surface of theend plate 24A, Further, thelap 22R of thestationary scroll 22 and thelap 24R of theswingable scroll 24 are opposed so as to be swingingly engaged with each other, whereby both thelaps chambers 26 between thestationary scroll 22 and theswingable scroll 24. - The driving
shaft 36 located below thebearing unit 40T of themain frame 40 is provided with abalance weight 37 for maintaining dynamic balance with theswingable scroll 24 or theeccentric shaft portion 38 or the like, so that theswingable scroll 24 is pivoted without being rotated around its own axis while balance is being maintained with the balance weight 31. Further, thecompression chamber 26 is configured to compress the refrigerant gas drawn in through theintake pipe 50 to a higher pressure by contracting the volume between both thelaps stationary scroll 22 as theswingable scroll 24 is pivoted. - The
stationary scroll 22 is provided at the center with a discharge hole TP. The high-pressure refrigerant gas discharged from the discharge hole TP is discharged into the discharge space TK through thedischarge valve 42. Then, as described above, the high-pressure refrigerant gas flows into the high-pressure space KK below themain frame 40 through the aforementioned vertical groove M which is provided. in each outer circumferential portion of themain frame 40 and thestationary scroll 22. Then, the high-pressure refrigerant gas is discharged out of thecompressor casing 10 through thedischarge pipe 70 provided on thecasing body 12. - Now, reference will be made to
FIG. 2 showing an enlarged view of theupper end cap 14 and theintake pipe 50 of the scroll type compressor described above and toFIG. 3 showing an enlarged view of theintake pipe 50. First, aniron pipe body 54 made of steel in an appropriate length and acopper pipe body 52 made of copper or another metal such as steel plated with copper in an appropriate length were prepared for theintake pipe 50. Thecopper pipe body 52 is less in thickness than theiron pipe body 54. The copper pipe body of this example is half or less in thickness than theiron pipe body 54. Theiron pipe body 54 is provided on the lower outer circumference with anannular groove 54M along which the O-ring 60 is installed, and the lower end outer circumferential portion is formed into a tapered. guideportion 54G. Theintake portion 22K provided in theend plate 22A of thestationary scroll 22 on the main body side of the scroll type compressor is formed into a guide portion with the inlet edge portion increased in diameter toward the top (upwardly), so that this guide portion and the above-mentionedguide portion 54G facilitate insertion of theintake pipe 50 into theintake portion 22K. - Furthermore, the inner periphery of a
joint area 54A which is the upper end part of theiron pipe body 54 is provided with an upwardly-opened first steppedportion 54D′, into which ajoint area 52A of the lower end part of thecopper pipe body 52 is fitted and to which thejoint area 52A is silver-brazed with a silver braze Y2. Furthermore, immediately below the first steppedportion 54D′, there is provided a second steppedportion 54D which is opened (upwardly) toward thecopper pipe body 52. The inner diameter D2 of the second steppedportion 54D is equal to or less than the minimum inner diameter Di of thecopper pipe body 52. - On the other hand, the outer diameter of an inlet opening edge portion FA of a basket-like filter F (the maximum outer diameter of the filter F) for removing dust mixed in the refrigerant gas is sized to be capable of passing through a region of the minimum inner diameter D1 of the
copper pipe body 52 as well as being press-fitted into the second steppedportion 54D.FIG. 3 is a view showing the press-fitted filter F. The filter F of this example is formed of a mesh of thin stainless steel wire, so that the inlet opening edge portion FA is formed by a turnover of the mesh being caulked. - However, a filter F according to another embodiment is also available. For example, as the inlet opening edge portion FA, it is also acceptable to employ a stainless-steel annular plate and solder this plate to an appropriate filter body. On the other hand, to obtain the appropriate filter body, it is acceptable to solder a plurality of filter body elements divided in the circumferential direction so as to join the elements together.
- As described above, the structure in which the filter F is press-fitted allows the filter F to be inserted and press-fitted into the
intake pipe 50 after each part has been joined together. Thus, even in the case of the filter F provided by soldering, the problem with the solder being melted can be prevented. Furthermore, even in the case of the filter F made of a wire material reduced in diameter, the thermal damage to the wire material can be prevented. After such a filter F has been placed, the upper end part of thecopper pipe body 52 is copper-brazed to the refrigerant gas pipe P. - Furthermore, even in the case of the filter F having the inlet opening edge portion FA the size of which is greater than the maximum outer diameter of the filter F of
FIG. 3 , the inlet opening edge portion FA can be installed by being sandwiched between the lower end bottom surface of the first steppedportion 54D′ and the lower end of thecopper pipe body 52, i.e., the lower end of thejoint area 52A. In this case, the inlet opening edge portion FA is preferably formed in the shape of a so-called flange that is expanded sideward, which would facilitate sandwiching of the inlet opening edge portion FA. For the installation by sandwiching, the inlet opening edge portion FA needs to be sandwiched before being silver-brazed with the silver braze Y2. Thus, the filter F requiring no soldering would be preferable. - According to the present invention, it is able to save the trouble of providing in a prescribed manner such a filter F into another pipe such as the refrigerant gas pipe P.
- As another embodiment for press-fitting the opening edge portion FA of the filter F into the stepped portion, there is also available an embodiment of
FIG. 4 which is different from that ofFIG. 3 . That is, thejoint area 52A or the lower end part of thecopper pipe body 52 is fitted into and silver-brazed with the silver braze Y2 to the first steppedportion 54D′ of theiron pipe body 54, in the case of which the size of the step of the first steppedportion 54D′ is greater by an appropriate size than the thickness of thejoint area 52A. The filter F is press-fitted so that the opening edge portion FA is placed on the step surface that remains inward of thejoint area 52A. The matters in the embodiment ofFIG. 4 are the same as described in relation to the embodiment ofFIG. 3 except that the opening edge portion FA is press fitted not into the second stepped portion 540 but into the first,step portion 54D′. - On the other hand, in this embodiment, the
steel mount pipe 14Z is welded to the steelupper end cap 14 by arc welding as described above (the built-up portion denoted by reference number Y1). Theintake pipe 50 is fitted into themount pipe 14Z, so that the fitted portion of thecopper pipe body 52 is silver-brazed with a silver braze Y3 to themount pipe 14Z. Thus, the upper end cap assembly is formed. Since this allows the O-ring 60 to remain detached while theintake pipe 50 is being securely joined to theupper end cap 14, it is possible to prevent thermal. damage to the O-ring caused by heat. produced during the joining work. However, according to the present invention, not the aforementioned sequence of manufacture/fabrication but the following one may he employed. That is, theintake pipe 50 may be fabricated in a manner such that the lower end part thereof is fitted into theintake portion 22K provided in the end.plate 22A of thestationary scroll 22 with the O-ring 60 disposed therebetween; after that, the upper part of theintake e pipe 50 is passed through themount pipe 14Z welded to theupper end cap 14; and then the fitted portion of thecopper pipe body 52 is silver-brazed thereto with the silver braze Y3. In this case, since thecopper pipe body 52 is employed, the silver brazing Y3 can be performed at a temperature lower than that for the arc welding, and thus thermal damage to the O-ring 60 can also he prevented or reduced. - Furthermore, a stepped portion 14D having a
step bottom surface 14S is formed on the outer side of the peripheral lower end part of theupper end cap 14, so that the stepped portion 14D is fitted into the upper end part of thecasing body 12 and then arc welded thereto (reference number Y4 ofFIG. 1 ). - The present invention is applicable to the scroll type compressor.
-
- 10 compressor casing
- 12 casing body
- 14 upper end cap
- 14D stepped portion
- 14Z mount pipe
- 22 stationary scroll
- 22K intake portion
- 24 swingable scroll
- 50 intake pipe
- 52 copper pipe body
- 52A joint area
- 54 iron pipe body
- 54A joint area
- 54D stepped portion
- 60 O-ring
- D1 minimum inner diameter of copper pipe body
- F filter
- FA inlet opening edge portion
- Y1, Y4 arc welded portion
- Y2, Y3 silver-brazed portion
Claims (6)
1. A scroll compressor in which an intake pipe for drawing in a refrigerant gas through an external pipe is securely joined to a steel compressor casing by penetrating therethrough, the compressor casing being configured to house a stationary scroll and a swingable scroll; and a lower end part of the intake pipe is fitted into an intake portion with an O-ring disposed therebetween, the intake portion being provided in the stationary scroll, the scroll compressor being characterized in that the intake pipe is configured to have a steel iron pipe body on the intake portion side and a copper pipe body joined to an upper end part of the iron pipe body, the copper pipe body being made of copper or another metal a surface of which is plated with copper; the copper pipe body of the intake pipe is silver-brazed to the compressor casing; and a filter for removing dust mixed in the refrigerant gas is installed in the intake pipe.
2. A scroll compressor in which an intake pipe for drawing in a refrigerant gas through an external pipe is securely joined to a steel compressor casing by penetrating therethrough, the compressor casing being configured to house a stationary scroll and a swingable scroll; and a lower end part of the intake pipe is fitted into an intake portion with an O-ring disposed therebetween, the intake portion being provided in the stationary scroll, the scroll compressor being characterized in that the intake pipe is configured to have a steel iron pipe body on the intake portion side and a copper pipe body joined to an upper end part of the iron pipe body, the copper pipe body being made of copper or another metal a surface of which is plated with copper; the copper pipe body of the intake pipe is silver-brazed to the compressor casing; a stepped portion which has an inner diameter equal to or less than the minimum inner diameter of the copper pipe body and which is opened toward the copper pipe body is provided inside the iron pipe body; and an opening edge portion of a filter for removing dust mixed in the refrigerant gas has an outer diameter which allows for passing through a region of the minimum inner diameter, with the opening edge portion of the filter press-fitted into the stepped portion.
3. The scroll compressor according to claim 1 , wherein the filter is formed by soldering.
4. The scroll compressor according to claim 2 , wherein the filter is a mesh of thin metal wire, and the opening edge portion is formed by securely caulking a region into which the opening edge portion of the body of the filter is outwardly turned over.
5. A scroll compressor in which an intake pipe for drawing in a refrigerant gas through an external pipe is securely joined to a steel compressor casing by penetrating therethrough, the compressor casing being configured to house a stationary scroll and a swingable scroll; and a lower end part of the intake pipe is fitted into an intake portion with an O-ring disposed therebetween, the intake portion being provided in the stationary scroll, the scroll compressor being characterized in that the intake pipe is configured to have a steel iron pipe body on the intake portion side and a copper pipe body joined to the upper end part of the iron pipe body, the copper pipe body being made of copper or another metal the surface of which is plated with copper; the copper pipe body of the intake pipe is silver-brazed to the compressor casing; and an opening edge portion of a filter for removing dust mixed in the refrigerant gas is sandwiched between the iron pipe body and the copper pipe body in a joint area thereof
6. The scroll compressor according to claim 2 , wherein the filter is formed by soldering.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011075129A JP2012207620A (en) | 2011-03-30 | 2011-03-30 | Scroll type compressor |
JP2011-075129 | 2011-03-30 | ||
PCT/JP2011/080590 WO2012132164A1 (en) | 2011-03-30 | 2011-12-27 | Scroll compressor |
Publications (1)
Publication Number | Publication Date |
---|---|
US20140017107A1 true US20140017107A1 (en) | 2014-01-16 |
Family
ID=46929961
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/008,150 Abandoned US20140017107A1 (en) | 2011-03-30 | 2011-12-27 | Scroll compressor |
Country Status (4)
Country | Link |
---|---|
US (1) | US20140017107A1 (en) |
JP (1) | JP2012207620A (en) |
CN (1) | CN103443464B (en) |
WO (1) | WO2012132164A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150377531A1 (en) * | 2014-06-26 | 2015-12-31 | Lg Electronics Inc. | Linear compressor and refrigerator including a linear compressor |
FR3034807A1 (en) * | 2015-04-13 | 2016-10-14 | Peugeot Citroen Automobiles Sa | CONNECTION ASSEMBLY OF A CYLINDER HOUSING WITH A TURBOCHARGER FOR ITS LUBRICATION |
US20170013674A1 (en) * | 2014-03-21 | 2017-01-12 | Huawei Technologies Co., Ltd. | Methods and Nodes in a Wireless Communication Network |
US20170303308A1 (en) * | 2014-02-25 | 2017-10-19 | Microsoft Technology Licensing, Llc | Priority Access to a Priority Access Channel |
EP3311030A4 (en) * | 2015-06-16 | 2018-11-07 | Bitzer Kühlmaschinenbau GmbH | Duct-mounted suction gas filter |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN113404668A (en) * | 2020-03-16 | 2021-09-17 | 瑞智精密股份有限公司 | Compressor with controller cooling function |
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- 2011-03-30 JP JP2011075129A patent/JP2012207620A/en not_active Withdrawn
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- 2011-12-27 WO PCT/JP2011/080590 patent/WO2012132164A1/en active Application Filing
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US20170303308A1 (en) * | 2014-02-25 | 2017-10-19 | Microsoft Technology Licensing, Llc | Priority Access to a Priority Access Channel |
US20170013674A1 (en) * | 2014-03-21 | 2017-01-12 | Huawei Technologies Co., Ltd. | Methods and Nodes in a Wireless Communication Network |
US20150377531A1 (en) * | 2014-06-26 | 2015-12-31 | Lg Electronics Inc. | Linear compressor and refrigerator including a linear compressor |
FR3034807A1 (en) * | 2015-04-13 | 2016-10-14 | Peugeot Citroen Automobiles Sa | CONNECTION ASSEMBLY OF A CYLINDER HOUSING WITH A TURBOCHARGER FOR ITS LUBRICATION |
WO2016166434A1 (en) * | 2015-04-13 | 2016-10-20 | Peugeot Citroen Automobiles Sa | Connection assembly for connecting a cylinder housing to a turbocharger for the lubrication thereof |
EP3311030A4 (en) * | 2015-06-16 | 2018-11-07 | Bitzer Kühlmaschinenbau GmbH | Duct-mounted suction gas filter |
Also Published As
Publication number | Publication date |
---|---|
JP2012207620A (en) | 2012-10-25 |
CN103443464B (en) | 2016-03-16 |
WO2012132164A1 (en) | 2012-10-04 |
CN103443464A (en) | 2013-12-11 |
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