CN110325737B - Compressor - Google Patents
Compressor Download PDFInfo
- Publication number
- CN110325737B CN110325737B CN201780086751.1A CN201780086751A CN110325737B CN 110325737 B CN110325737 B CN 110325737B CN 201780086751 A CN201780086751 A CN 201780086751A CN 110325737 B CN110325737 B CN 110325737B
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- CN
- China
- Prior art keywords
- joint
- pipe
- connection pipe
- suction connection
- suction
- 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.)
- Expired - Fee Related
Links
- 238000003466 welding Methods 0.000 claims abstract description 49
- 239000003507 refrigerant Substances 0.000 claims abstract description 27
- 230000006835 compression Effects 0.000 claims abstract description 22
- 238000007906 compression Methods 0.000 claims abstract description 22
- 238000005219 brazing Methods 0.000 claims description 31
- 238000005304 joining Methods 0.000 claims description 14
- 230000004927 fusion Effects 0.000 claims description 11
- 238000000034 method Methods 0.000 description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000005057 refrigeration Methods 0.000 description 8
- 238000005096 rolling process Methods 0.000 description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- 229910000679 solder Inorganic materials 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 238000010894 electron beam technology Methods 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000005493 welding type Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
-
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L13/00—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints
- F16L13/02—Welded joints
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
- F25B1/04—Compression machines, plants or systems with non-reversible cycle with compressor of rotary type
Abstract
The compressor is provided with: a closed container for the inflow of refrigerant; a suction element for sucking a refrigerant into the closed container; a compression element provided in the closed container and compressing the refrigerant; and an electric element for driving the compression element. The suction element has a cylindrical joint pipe and a cylindrical suction connection pipe inserted into the joint pipe. The first end of the junction tube is connected to the closed vessel, and the second end of the junction tube is configured to be located outside the closed vessel. The third end of the suction connection pipe is connected to the compression element, and the fourth end of the suction connection pipe is configured to suck the refrigerant outside the closed container. A plurality of joint sites for welding joint are formed by the suction connecting pipe and the joint pipe. Multiple joint locations can be used in different types of welded joints.
Description
Technical Field
The present invention relates to a compressor used in a refrigeration cycle provided in a refrigerator, an air conditioner, or the like.
Background
A refrigeration cycle of a refrigerator, an air conditioner, or the like circulates a refrigerant, and the refrigerant is compressed by a compressor of the refrigeration cycle. The compressor includes a closed container, and a compression mechanism and a suction mechanism disposed in the closed container, and a refrigerant sucked into the closed container through the suction mechanism is compressed by the compression mechanism. As a refrigerant suction mechanism, a mechanism including a suction connection pipe, a suction pipe, and a connection pipe has been proposed (for example, patent document 1). The connection pipe is connected to a hole formed in a side surface of the closed container, and a suction connection pipe is inserted into the connection pipe. One end of the suction connection pipe is connected to the suction pipe, and the other end is connected to the compression mechanism. The refrigerant flows from the outside of the compressor through the suction pipe. In the compressor of patent document 1, the joint pipe is made of copper, and the suction connection pipe and the joint pipe are fixed by brazing.
As a suction mechanism of a compressor, a mechanism constituted only by a suction connection pipe has also been proposed (for example, patent document 2). In this mechanism, the suction connection pipe is inserted into an opening formed in a side surface of the closed container, and is connected to the compression mechanism in the closed container. A flange protruding outward is formed on the outer circumferential surface of the suction connection pipe. The flange of the suction connection pipe is joined to an edge portion closing the opening of the container by resistance welding.
Patent document 1: japanese patent laid-open publication No. 11-13671
Patent document 2: japanese examined patent publication (Kokoku) No. 7-117043
The compressor of patent document 1 uses brazing for joining the suction connection pipe and the joint pipe. In the brazing process, even if brazing leakage occurs, the brazing can be joined by additionally performing re-brazing. That is, since the brazing process can facilitate repair and the processing equipment, there is an advantage of the brazing process when the number of processes is relatively small. However, when heat generated by brazing is transferred to the closed container or the compression mechanism, the compression mechanism is deformed, and the performance of the compression mechanism is degraded. Therefore, the brazing process requires a high skill, and when the suction mechanism is fixed by the brazing process, it is difficult to ensure stable quality. In addition, in the case of brazing, since the time required for the brazing work is long, materials for brazing are required, and thus the manufacturing cost tends to be high. Therefore, when the number of steps increases, the quality and the manufacturing cost increase for the steps of brazing work become problems.
On the other hand, in the manufacture of the compressor of patent document 2, electrodes are provided at the positions where the flanges are formed, and resistance welding is performed. For the electric resistance welding processing, the construction time is short, and higher skill is not needed. However, in the case where the welding missing occurs, the resistance welding apparatus needs to be newly provided. Therefore, when the number of operations is small, the entire manufacturing cost increases in the electric resistance welding process.
Disclosure of Invention
The present invention has been made to solve the above-described problems, and an object thereof is to suppress an increase in manufacturing cost in manufacturing a compressor.
The compressor according to the present invention includes: a closed container for the inflow of refrigerant; a suction element for sucking the refrigerant into the closed container; a compression element provided in the closed container and compressing the refrigerant; and an electric element for driving the compression element, wherein the suction element includes a cylindrical joint pipe and a cylindrical suction connection pipe, the suction connection pipe is inserted into the joint pipe, a first end of the joint pipe is connected to the closed container, a second end of the joint pipe is disposed outside the closed container, a third end of the suction connection pipe is connected to the compression element, a fourth end of the suction connection pipe is configured to suck the refrigerant outside the closed container, the suction element includes a first joint portion welded by resistance welding, a second joint portion welded by brazing, and a third joint portion welded by fusion bonding, and the joint pipe and the suction connection pipe can be welded by resistance welding of the first joint portion, brazing of the second joint portion, and a third joint portion welded by fusion bonding, And welding of any one of the fusion joints of the third joint portion.
Further, the following configuration is possible: a joint pipe flange protruding outward is formed at a second end portion of the joint pipe, a suction connection pipe flange protruding outward is formed at the fourth end portion of the suction connection pipe, and the first joint portion is formed by a surface of the joint pipe flange facing the suction connection pipe flange and a surface of the suction connection pipe flange facing the joint pipe flange.
Further, the following configuration is possible: a space is formed between an inner circumferential surface of the joint pipe and an outer circumferential surface of the suction connection pipe, and the second joint portion is formed by the inner circumferential surface of the joint pipe and the outer circumferential surface of the suction connection pipe.
Further, the following configuration is possible: a suction connection pipe flange protruding outward is formed at the fourth end portion of the suction connection pipe, a joint pipe flange protruding outward is formed at the second end portion of the joint pipe, the joint pipe flange has an outer diameter larger than an outer diameter of the suction connection pipe flange, and the third joint portion is formed by a side surface of the suction connection pipe flange and a plane of the joint pipe flange.
Further, the following configuration is possible: the first joint part is welded by resistance welding.
Further, the following configuration is possible: the second joint portions are joined by brazing.
Further, the following configuration is possible: the third joint portion is fusion bonded or brazing bonded.
Further, the following configuration is possible: at least two of the first joint site, the second joint site, and the third joint site are joined.
According to the compressor of the present invention, the suction joint pipe and the joint pipe form a plurality of joint sites for welding, and the plurality of joint sites can be used for welding in different forms. Therefore, the weld joint can be selected according to the situation, and an increase in the manufacturing cost of the compressor can be suppressed.
Drawings
Fig. 1 is a sectional view schematically showing the structure of a compressor according to an embodiment of the present invention.
Fig. 2 is a cross-sectional view showing the structure of a suction connection pipe and a junction pipe in a compressor according to an embodiment of the present invention.
Fig. 3 is a cross-sectional view schematically showing resistance welding joining of a suction connection pipe and a joint pipe in the compressor according to the embodiment of the present invention.
Fig. 4 is a cross-sectional view showing the structure of the welding electrode when resistance welding is performed.
Fig. 5 is a cross-sectional view schematically showing the brazing of the suction connection pipe and the joint pipe in the compressor according to the embodiment of the present invention.
Fig. 6 is a cross-sectional view schematically showing fusion bonding of a suction connection pipe and a joint pipe in a compressor according to an embodiment of the present invention.
Fig. 7 is a cross-sectional view schematically showing a weld leakage repairing portion of resistance welding of a suction connection pipe and a joint pipe in a compressor according to an embodiment of the present invention.
Fig. 8 is a sectional view showing a structure of a conventional example of a connection portion between a suction connection pipe and a junction pipe.
Detailed Description
Hereinafter, an embodiment of the compressor according to the present invention will be described in detail with reference to the drawings. The present invention is not limited to the embodiments described below. In the following drawings, the sizes of the respective components may be different from those of an actual apparatus.
Provided is an implementation mode.
Fig. 1 is a sectional view schematically showing the structure of a compressor according to an embodiment of the present invention. The compressor 100 is one of the components of a refrigeration cycle used in various industrial machines such as a refrigerator, a freezer, an automatic vending machine, an air conditioner, a refrigeration device, and a water heater. The compressor 100 sucks a refrigerant circulating through a refrigeration cycle, compresses the refrigerant to a high-temperature and high-pressure state, and discharges the refrigerant. The compressor 100 includes a closed container 1, an electric element 2, a compression element 3, and an accumulator 14. Inside the closed container 1, the electric element 2 is disposed on the upper side, and the compression element 3 is disposed on the lower side. The accumulator 14 is a container for accumulating liquid refrigerant. The compression element 3 includes a cylinder 5, a drive shaft 4, an upper bearing 7, a lower bearing 8, and a rolling piston 6. The cylinder 5 has a space for compressing the refrigerant. Electric element 2 includes stator 21 and rotor 22. The stator 21 is shrink-fitted to the closed vessel 1. The rotor 22 is shrink-fitted to the drive shaft 4. The rotor 22 starts to be rotated by starting energization to the stator 21, and rotates the drive shaft 4. The driving force generated by the electric element 2 is transmitted to the rolling piston 6 via the drive shaft 4. The drive shaft 4 is supported by an upper bearing 7 and a lower bearing 8. The rolling piston 6 is fitted into a eccentric portion (not shown) provided in the drive shaft 4, and is rotatably supported in the cylinder 5.
Fig. 2 is a cross-sectional view showing the structure of a suction connection pipe and a junction pipe in a compressor according to an embodiment of the present invention. The joint pipe 10 is cylindrical as a whole and has both ends open. One end (first end) of the junction tube 10 is inserted into an opening formed in a side surface of the closed vessel 1, and is welded and fixed to the side surface of the closed vessel 1. The other end (second end) of the junction tube 10 is disposed outside the closed vessel 1, and a flange 10A is formed on the peripheral edge thereof.
The suction connection pipe 12 is cylindrical as a whole, and has both ends open. The suction connection pipe 12 has a large diameter portion 121 and a small diameter portion 122. The large diameter portion 121 has an outer diameter larger than that of the small diameter portion 122. An insertion hole 12B is formed inside the suction connection pipe 12. The insertion hole 12B is formed so that the inner diameter thereof is the same as the large diameter portion 121 and the small diameter portion 122. In the suction connection pipe 12, a flange 12A protruding outward is formed on the peripheral edge of the end on the large diameter portion 121 side.
The suction connection pipe 12 is disposed such that the large diameter portion 121 is disposed in the joint pipe 10 and the small diameter portion 122 is inserted into the cylinder 5 of the compression element 3. That is, the end (third end) of the suction connection pipe 12 on the small diameter portion 122 side is connected to the compression element 3, and the end (fourth end) on the large diameter portion 121 side is located outside the closed casing 1. The flange 12A of the suction connection pipe 12 is engaged with the end of the joint pipe 10 on the side where the flange 10A is formed. A suction pipe 15 is inserted into the large-diameter portion 121 of the suction connection pipe 12, and the suction pipe 15 is connected to the accumulator 14. According to the above configuration, the accumulator 14 and the compression element 3 communicate with each other through the suction connection pipe 12 and the suction pipe 15.
Here, the operation of the compressor 100 will be described with reference to fig. 1. When the energization of the stator 21 of the electric element 2 is started, the rotor 22 is rotationally driven. The drive shaft 4 is also rotated by the rotor 22 being rotationally driven, which is transmitted to the rolling piston 6. That is, the driving force generated by the electric element 2 is transmitted to the rolling piston 6 via the drive shaft 4. As a result, the rolling piston 6 eccentrically rotates in the cylinder 5. The rolling piston 6 eccentrically rotates in the cylinder 5, whereby the refrigerant in the accumulator 14 is introduced into the cylinder 5 through the suction pipe 15 and the suction connection pipe 12. The introduced refrigerant is compressed in the cylinder 5. The compressed refrigerant is discharged into the closed casing 1, and then moves to the upper part of the closed casing 1 through the gap of the electric element 2. The refrigerant is discharged to the refrigeration cycle through the discharge pipe 9. The refrigerant circulating through the refrigeration cycle returns to the accumulator 14 again.
As shown in fig. 2, a tapered surface 12C is formed on the outer peripheral surface of the suction connection pipe 12 at a portion where the large diameter portion 121 and the flange 12A intersect. An opening edge portion 10B of the end portion of the joint pipe 10 where the flange 10A is formed abuts against a tapered surface 12C of the suction connection pipe 12. The first joint portion 31 is formed by a surface of the flange 10A facing the flange 12A and a surface of the flange 12A facing the flange 10A. A space is formed between the inner circumferential surface of the joint pipe 10 and the outer circumferential surface of the suction connection pipe 12, and a second joint portion 32 is formed by the inner circumferential surface of the joint pipe 10 and the outer circumferential surface of the suction connection pipe 12. The flange 10A of the joint pipe 10 has an outer diameter larger than the outer diameter of the flange 12A of the suction connection pipe 12, and a third joint portion 33 is formed by the side surface of the flange 12A and the flat surface of the flange 10A.
The first joint site 31 is a joint site where joining by resistance welding is possible, the second joint site 32 is a joint site where joining by brazing welding is possible, and the third joint site 33 is a joint site where joining by fusion welding is possible. That is, in the compressor 100 of the present embodiment, the suction connection pipe 12 and the joint pipe 10 are formed with the first joint site 31, the second joint site 32, and the third joint site 33 for welding, and the plurality of joint sites are configured to be usable for different types of welding. The respective modes of the solder bonding will be described later.
Fig. 3 is a cross-sectional view schematically showing resistance welding joining of a suction connection pipe and a joint pipe in the compressor according to the embodiment of the present invention. The suction connection pipe 12 is made of an iron member or a member having an iron surface plated with copper. The material of the suction pipe 15 is different according to its joining method with the suction connection pipe 12. The engaging pipe 10 is engaged with the side of the closed vessel 1 in advance. The suction connection pipe 12 is previously coupled with the suction pipe 15. The suction connection pipe 12 is inserted into the cylinder 5 and then joined to a joint pipe 10 welded and fixed to a side surface of the closed casing 1 in advance. When the suction connection pipe 12 and the joint pipe 10 are joined by arc welding, the suction pipe 15 made of iron is used. When the suction connection pipe 12 and the joint pipe 10 are joined by brazing or gas brazing, the suction pipe 15 is made of iron or copper.
The tapered surface 12C of the suction connection pipe 12 is pressed against the opening edge portion 10B of the end portion of the joint pipe 10 where the flange 10A is formed. Then, a large current is applied to a small area for a short time and then pressurized, thereby generating resistance heat at the contact portion between opening edge 10B and tapered surface 12C. The surfaces of the flange 10A and the flange 12A forming the first joint portion 31 are melted by the resistance heat generation to form a resistance welding portion 311, and the suction connection pipe 12 and the joint pipe 10 are joined to each other.
Fig. 4 is a cross-sectional view showing the structure of the welding electrode when resistance welding is performed. The upper electrode 16 and the lower electrode 17 are made of copper or copper alloy. The suction connection pipe 12 is pressed against the junction pipe 10 by disposing the upper electrode 16 above the upper surface flat portion 12D of the suction connection pipe 12 and pressing the upper surface flat portion 12D downward. The lower electrode 17 is disposed on the outer peripheral surface of the joint pipe 10 so as to receive the pressurizing force applied to the joint pipe 10 by the suction connection pipe 12, and holds the joint pipe 10. This can prevent the closed container 1 from being loaded. In this state, a large current flows between the upper electrode 16 and the lower electrode 17 for a short time, and the suction connection tube 12 is connected to the connection tube 10 as described above.
Fig. 8 is a sectional view showing a structure of a conventional example of a connection portion between a suction connection pipe and a junction pipe. The suction pipe 150 of the conventional example also serves as a suction connection pipe. The flat portion 150A is formed on the suction pipe 150 by bulging. On the other hand, the end portion 1A is formed outside the side surface of the closed vessel 1 by burring. The flat portion 150A is directly welded to the end portion 1A. According to the welding method of this conventional example, the closed vessel 1 is directly subjected to the pressure applied to the welding electrode for projection welding. Therefore, there is a possibility that deformation of the closed vessel 1 and deformation of the cylinder 5 are caused. As a result, the performance of the compressor may be degraded, and the quality and reliability of the compressor may be deteriorated.
In contrast, according to the present embodiment, the junction tube 10 is provided so as to avoid direct application of pressure applied to the welding electrode to the closed vessel 1. Therefore, the closed casing 1 and the cylinder 5 are not deformed during the manufacture of the compressor 100. As a result, the quality and reliability of the compressor 100 can be prevented from being degraded.
Fig. 5 is a cross-sectional view schematically showing the brazing of the suction connection pipe and the joint pipe in the compressor according to the embodiment of the present invention. A second joint portion 32 is formed between the outer circumferential surface of the suction connection pipe 12 and the inner circumferential surface of the junction pipe 10. The solder joint portion 321 is formed by inserting solder into the second joint portion 32 and melting, thereby joining the suction connection pipe 12 and the joint pipe 10. The length of the outer diameter of the flange 10A of the joint pipe 10 is longer than the length of the outer diameter of the flange 12A of the suction connection pipe 12. Therefore, the solder of the solder inserted into the second tab portion 32 can be surely accumulated. As a result, the suction connection pipe 12 and the joint pipe 10 can be easily brazed.
Depending on the type of solder used for soldering, it is necessary to perform a copper plating process on the joint pipe 10 and the suction connection pipe 12 before soldering. In this case, the suction pipe 15 is made of a copper pipe, and thus the suction pipe 15, the suction connection pipe 12, and the joint pipe 10 can be brazed at the same time.
Fig. 6 is a cross-sectional view schematically showing fusion bonding of a suction connection pipe and a joint pipe in a compressor according to an embodiment of the present invention. In the present embodiment, the length of the outer diameter of the flange 10A of the joint pipe 10 is longer than the length of the outer diameter of the flange 12A of the suction connection pipe 12. Therefore, the suction connection pipe 12 and the junction pipe 10 are joined to each other by forming a third joint portion 33 by the side surface of the flange 12A and the upper plane of the flange 10A, and forming a fusion joint portion 331 by fusion joining by arc welding or electron beam welding the third joint portion 33.
Fig. 7 is a cross-sectional view schematically showing a weld leakage repairing process of resistance welding of a suction connection pipe and a joint pipe in a compressor according to an embodiment of the present invention. Here, with reference to fig. 7, a repair joining in the case where a weld leakage occurs at a joint portion formed by resistance welding of the suction connection pipe 12 and the joint pipe 10 will be described. As described above, when the suction connection pipe 12 and the resistance welding portion 311 of the joint pipe 10 joined by resistance welding are subjected to leak welding due to a welding failure, the leak welding portion cannot be joined again even if resistance welding is performed again. This is because the joint area where resistance welding has been performed is large, and resistance heat generation due to current concentration cannot be generated. Even in such a case, according to the present embodiment, the repair joining can be performed by forming the brazing repair portion 34 by brazing the second joint portion 32 formed by the side surface of the flange 12A of the suction connection pipe 12 and the flat surface of the flange 10A of the joint pipe 10. Further, the second joint portion 32 can be repaired by performing arc welding or electron beam welding as described above to form a molten joint portion 331 as shown in fig. 6.
As described above, in the present embodiment, the compressor 100 includes the plurality of joint locations, i.e., the first joint location 31, the second joint location 32, and the third joint location 33. Therefore, the joining method according to the situation can be applied to each of the joint portions. In addition, when a poor joint occurs at a joint portion, the joint portion can be easily repaired by joining other joint portions.
Description of reference numerals:
1 … closing the container; 1a … end; 2 … electrically powered element; 3 … compressing the element; 4 … drive shaft; 5 … cylinders; 6 … rolling piston; 7 … upper bearing; 8 … lower bearing; 9 discharge pipe of 9 …; 10 … joint pipe; 10a … flange; 10B … opening edge portion; 12 … suction connecting tube; 12a … flange; 12B … through hole; 12C … tapered surfaces; 12D … upper surface flat; 14 … a reservoir; 15 … suction tube; 16 … upper electrode; 17 … lower electrode; 21 … stator; 22 … rotor; 31 … first joint location; a 32 … second joint location; 33 … third joint site; 34 … brazing repair site; 100 … compressor; 121 … large diameter section; 122 … minor diameter; 150 … suction tube; 150a … flat; 311 … resistance welding part; 321 … braze joint; 331 … melting the joint.
Claims (2)
1. A compressor is characterized by comprising:
a closed container into which a refrigerant flows;
a suction element that sucks the refrigerant into the closed container;
a compression element provided in the closed container and compressing the refrigerant; and
an electric element that drives the compression element,
the suction element has a cylindrical joint pipe and a cylindrical suction connection pipe inserted into the joint pipe,
a first end of the junction tube is connected with the closed vessel, a second end of the junction tube is configured to be located outside the closed vessel,
a third end of the suction connection pipe is connected to the compression element, a fourth end of the suction connection pipe is configured to suck the refrigerant outside the closed casing,
the suction element has a first joint portion welded by resistance welding, a second joint portion welded by brazing, and a third joint portion welded by fusion bonding or brazing,
a joint pipe flange protruding outward is formed at the second end portion of the joint pipe,
a suction connection pipe flange protruding outward is formed at the fourth end portion of the suction connection pipe, the first joint portion is formed by a surface of the joint pipe flange facing the suction connection pipe flange and a surface of the suction connection pipe flange facing the joint pipe flange,
a space is formed between an inner circumferential surface of the joint pipe and an outer circumferential surface of the suction connection pipe, the second joint portion is formed by the inner circumferential surface of the joint pipe and the outer circumferential surface of the suction connection pipe,
the joint pipe flange has an outer diameter larger than that of the suction connection pipe flange, the third joint portion is formed by a side surface of the suction connection pipe flange and a plane of the joint pipe flange,
the joint pipe and the suction connection pipe can be joined by at least one of resistance welding at the first joint site, brazing at the second joint site, and fusion bonding or brazing at the third joint site,
in the case where welding leakage due to poor welding occurs at the first joint portion joined by resistance welding, repair is performed by joining the second joint portion or the third joint portion.
2. The compressor of claim 1,
at least two of the first joint location, the second joint location, and the third joint location are engaged.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2017/006918 WO2018154689A1 (en) | 2017-02-23 | 2017-02-23 | Compression machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110325737A CN110325737A (en) | 2019-10-11 |
| CN110325737B true CN110325737B (en) | 2021-05-25 |
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ID=63253671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780086751.1A Expired - Fee Related CN110325737B (en) | 2017-02-23 | 2017-02-23 | Compressor |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPWO2018154689A1 (en) |
| CN (1) | CN110325737B (en) |
| WO (1) | WO2018154689A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110645741B (en) * | 2019-08-22 | 2021-06-18 | 珠海格力节能环保制冷技术研究中心有限公司 | Enthalpy-increasing pipeline of compressor and assembling method thereof |
| CZ2022180A3 (en) * | 2019-11-21 | 2022-05-25 | Mitsubishi Electric Corporation | Hermetic compressor, refrigeration cycle equipment and method of producing the hermetic compressor |
| JP6940080B2 (en) * | 2020-01-27 | 2021-09-22 | ダイキン工業株式会社 | Refrigerant piping |
| WO2021171583A1 (en) * | 2020-02-28 | 2021-09-02 | 三菱電機株式会社 | Method for manufacturing sealed compressor |
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| JP6289649B2 (en) * | 2014-09-08 | 2018-03-07 | 三菱電機株式会社 | Compressor and manufacturing method of compressor |
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- 2017-02-23 JP JP2019500933A patent/JPWO2018154689A1/en active Pending
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2018154689A1 (en) | 2018-08-30 |
| CN110325737A (en) | 2019-10-11 |
| JPWO2018154689A1 (en) | 2019-11-07 |
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