CN107476958B - Air suction structure of compressor - Google Patents
Air suction structure of compressor Download PDFInfo
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- CN107476958B CN107476958B CN201710863120.8A CN201710863120A CN107476958B CN 107476958 B CN107476958 B CN 107476958B CN 201710863120 A CN201710863120 A CN 201710863120A CN 107476958 B CN107476958 B CN 107476958B
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- 238000003466 welding Methods 0.000 claims abstract description 121
- 238000009413 insulation Methods 0.000 claims abstract description 25
- 239000007788 liquid Substances 0.000 claims abstract description 19
- 238000003860 storage Methods 0.000 claims abstract description 13
- 230000006835 compression Effects 0.000 claims description 26
- 238000007906 compression Methods 0.000 claims description 26
- 239000002893 slag Substances 0.000 claims description 16
- 230000007246 mechanism Effects 0.000 claims description 13
- 239000002184 metal Substances 0.000 claims description 13
- 230000006698 induction Effects 0.000 claims description 8
- 229910000679 solder Inorganic materials 0.000 claims description 7
- 230000000903 blocking effect Effects 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 2
- 230000035939 shock Effects 0.000 abstract description 11
- 238000005219 brazing Methods 0.000 description 19
- 238000010586 diagram Methods 0.000 description 15
- 239000000463 material Substances 0.000 description 11
- 238000004891 communication Methods 0.000 description 7
- 239000000945 filler Substances 0.000 description 7
- 239000003507 refrigerant Substances 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000010953 base metal Substances 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003779 heat-resistant material Substances 0.000 description 1
- 239000012770 industrial material Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
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
- F04B39/123—Fluid connections
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Compressor (AREA)
Abstract
The invention discloses a compressor air suction structure, which comprises a compressor, a liquid storage device, an elbow pipe and a guide pipe; the air suction hole of the compressor is communicated with the liquid reservoir based on the bent pipe and the guide pipe or based on the connection of the bent pipe, the guide pipe and the air suction hole; the outer edge end of the guide pipe is arranged on the guide pipe, and the guide pipe is welded and connected with the bent pipe based on the outer edge end of the guide pipe, so that the temperature of a pipeline between the liquid storage device and the air suction hole of the compressor during welding is lower than that of an air suction structure of the existing compressor, and the pipeline and parts arranged on the pipeline during welding are not influenced by high temperature and thermal shock; by additionally arranging the heat insulation layer, the energy efficiency ratio of the compressor can be effectively improved, and the compressor has good practicability.
Description
Technical Field
The invention relates to the field of compressors, in particular to a compressor suction structure.
Background
Fig. 1 shows a schematic diagram of a suction structure of a conventional compressor. In the current industry compressor suction structure, the bent pipe 201 has a bent section and a straight section, one end of the bent section is connected with the liquid storage device 200, and the other end is connected with the straight pipe section 202; a fixed pipe 103 extends out of the shell 102 of the compressor, and a connecting pipe 301 is matched with the air suction hole 101 of the compression cavity 100; the straight pipe section 202 is clamped on the reducing step of the connecting pipe 301, and the fixed pipe 103 is sleeved outside the connecting pipe 301; the straight pipe section 202, the connecting pipe 301 and the fixing pipe 103 are welded and fixed in a brazing manner, and a seal is formed.
The conventional brazing mode mainly comprises two modes of flame brazing or induction brazing, which are suitable for welding pipe fittings, but have the problems of overlarge welding thermal shock, long welding time, overlarge thermal influence range and the like, and when in welding, the temperature of the bent pipe 201 and the connecting pipe 301 is higher, so that the performance of the pipe and the performance of the compressor can be influenced.
In the actual processing and assembling process, the compressor 1 and the liquid reservoir 2 are firstly processed and assembled respectively and then communicated through a pipeline; in the manufacturing process of the compressor 1 and the liquid storage device 2, different processing sequences can be designed to avoid the influence of heat generated by processing modes such as welding on the performance of the compressor, for example, the shell part and the required pipeline part are welded in advance before the compression mechanism is installed, and then the internal compression mechanism is assembled to avoid the influence of high temperature of welding and impurities generated by welding on the performance of the compressor.
However, it is inevitable that the suction hole of the assembled compressor is in pipeline communication with the elbow of the assembled accumulator; if a mechanical matching mode is used, the tightness is not good, and the refrigerant and the sucked impurities are not easy to leak; if a processing method such as brazing is used, as in the conventional compressor suction structure of fig. 1, the heating time is long during the brazing operation, the heat influence range is large, and the positions other than the welding positions are easily affected, so that the performance of the compressor is affected.
Meanwhile, the brazing operation has long heating time, larger heat influence range, higher heat resistance requirements of materials of the bent pipe and the connecting pipe and corresponding ingredients, narrower selection surfaces of the materials and the corresponding ingredients and corresponding cost increase; when brazing, the influence of high temperature and high heat on the performance of the whole communication pipeline needs to be avoided, and the implementation has higher difficulty.
Therefore, a new compressor suction structure is needed to solve the existing compressor suction structure problems.
Disclosure of Invention
In order to solve the problem of the existing compressor air suction structure, the invention provides the compressor air suction structure, which is characterized in that the guide pipe with the outer edge end of the guide pipe for being matched with welding is additionally arranged, the connection between the guide pipe and the bent pipe is realized on the basis of a welding mode that the total welding heat is low and the heat influence range is concentrated, the problems of overlarge welding thermal shock, long welding time, overlarge heat influence range and the like of the existing compressor air suction structure are effectively solved, and the invention has good practicability.
Correspondingly, the invention discloses a compressor air suction structure which comprises a compressor, a liquid storage device, an elbow pipe and a guide pipe;
the compressor comprises a shell and a compression mechanism arranged in the shell, wherein the compression mechanism comprises a compression cavity and an air suction hole communicated with the compression cavity;
one end of the bent pipe is connected to the liquid storage device, and the other end of the bent pipe is connected to the compressor; the periphery of the bent pipe connected with one end of the compressor is provided with an outer edge end of the bent pipe for matched welding;
the guide pipe is provided with at least one guide pipe outer edge end for matched welding;
one end of the guide pipe is fixed on the shell of the compressor, and the other end of the guide pipe is welded with the outer edge end of the bent pipe based on the outer edge end of the guide pipe;
after the outer edge end of the guide pipe and the outer edge end of the bent pipe are welded, a sealing channel is formed between the air suction hole and the liquid storage device.
In a preferred embodiment, the welding mode based on the welding between the outer edge end of the guide pipe and the outer edge end of the bent pipe is as follows: resistance welding or high frequency induction welding.
In a preferred embodiment, an elbow connected to one end of the compressor passes through the guide pipe and the casing and then is fitted to the suction hole.
In a preferred embodiment, the welding surface of the outer edge end of the guide pipe and the welding surface of the outer edge end of the bent pipe have at least one or more protrusions in cross-sectional shape before welding.
In the preferred embodiment, when the outer edge end of the guide pipe and the outer edge end of the bent pipe are welded, a slag baffle plate for blocking molten parent metal and molten solder from entering the compression cavity extends from the inner wall of the outer edge end of the guide pipe to the outer edge end direction of the bent pipe, and an inward concave step for avoiding the slag baffle plate is formed in the inner wall of the outer edge end of the bent pipe; or the inner wall of the outer edge end of the bent pipe extends out of the slag baffle plate for blocking the molten parent metal and the molten solder from entering the compression cavity towards the outer edge end of the guide pipe, and the inner wall of the outer edge end of the guide pipe is provided with an inward concave step for avoiding the slag baffle plate;
the slag baffle and the inward concave step are not contacted with each other;
in a preferred embodiment, the suction structure of the compressor further comprises a connecting pipe, one end of the connecting pipe is matched with the suction hole, the other end of the connecting pipe penetrates through the shell and the guide pipe, and the outer edge end of the connecting pipe is arranged at the tail end of the connecting pipe; the bent pipe connected with one end of the compressor is matched with the inner wall of the connecting pipe;
the outer edge end of the connecting pipe is clamped between the outer edge end of the guide pipe and the outer edge end of the bent pipe;
and welding is realized based on the outer edge end of the guide pipe, the outer edge end of the bent pipe and the outer edge end of the connecting pipe.
In a preferred embodiment, one end of the connecting pipe, which is matched with the air suction hole, is a straight pipe or a taper pipe.
In a preferred embodiment, before welding, the cross-sectional shape of at least one of the two welding surfaces of the outer edge end of the connecting pipe and the outer edge end of the bent pipe is provided with one or more protrusions; the cross section of at least one surface of two welding surfaces of the outer edge end of the connecting pipe and the outer edge end of the guide pipe is provided with one or more protrusions.
In a preferred embodiment, the compressor suction mechanism further comprises one or more heat insulating layers for reducing heat exchange between the inside and outside of the sealed passageway.
In a preferred embodiment, when the elbow is fitted to the air suction hole, the heat insulation layer is fitted to the inner wall of the elbow, and/or to the periphery of the elbow, and/or to the inner wall of the air suction hole;
when the elbow is matched in the connecting pipe, the heat insulation layer is matched with the inner wall of the elbow and/or the periphery of the elbow and/or the inner wall of the connecting pipe and/or the periphery of the connecting pipe and/or the inner wall of the air suction hole.
The air suction structure of the compressor provided by the invention realizes a welding mode with lower total welding heat and more concentrated heat influence range based on the outer edge end of the guide pipe, avoids the problems of overlarge thermal shock, long welding time, overlarge heat influence range and the like in the traditional brazing welding, and has good practicability. In the process of realizing the connection of the air suction structure of the compressor, only local heating is needed at the welding part to realize welding, so that the whole air suction structure is not heated in a large area, the problems of overlong welding time and the like in the traditional brazing are reduced, the influence of long-time heating on the material of the whole air suction structure is also reduced, and the layout of the internal heat-resistant material structure of the traditional air suction structure can be met.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 shows a schematic diagram of a prior art compressor suction configuration;
FIG. 2 shows a schematic diagram of a compressor suction structure according to a first embodiment of the invention;
FIG. 3 is a schematic view showing a catheter structure according to a first embodiment of the invention;
FIG. 4 is a schematic view showing a bent pipe structure according to a first embodiment of the invention;
FIG. 5 shows a schematic diagram of a compressor suction structure of a second embodiment of the invention;
fig. 6 shows a schematic diagram of a connecting pipe structure according to a second embodiment of the invention;
FIG. 7 is a schematic cross-sectional view of a welding surface at the outer edge of a connecting pipe according to a second embodiment of the invention;
FIG. 8 is a schematic view showing a catheter structure according to a second embodiment of the invention;
FIG. 9 is a schematic diagram showing the cross-sectional shape of the welded surface of the outer edge end of the elbow in the second embodiment of the invention;
FIG. 10 is a schematic diagram of a first embodiment of the present invention;
FIG. 11 is a schematic diagram showing a thermal insulation layer structure according to a first embodiment of the invention;
FIG. 12 is a schematic view of a second insulating layer structure according to a second embodiment of the invention;
FIG. 13 shows a third schematic view of a thermal barrier structure according to a second embodiment of the invention;
fig. 14 shows a schematic view of a heat insulating layer provided on the inner wall of the suction hole.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Fig. 2 shows a compressor suction structure of a first embodiment of the invention. The air suction structure of the compressor of the embodiment of the invention comprises a compressor, a liquid storage device 200, an elbow 201 and a conduit 401:
the compressor comprises a shell 102 and a compression mechanism arranged in the shell, wherein the compression mechanism comprises a compression cavity 100 and a suction hole 101 communicated with the compression cavity;
one end of the bent pipe 201 is used for connecting a liquid reservoir, and the other end is used for connecting a compressor; in a specific implementation, the bent pipe 201 includes a section of bent section, and straight pipe sections can be simultaneously arranged at two ends of the bent section or not arranged at two ends, or straight pipe sections are arranged at one end of the bent section and one end of the bent section; the diameter of the straight pipe section can be fixed, or the straight pipe section can be processed into a reducer pipe in actual conditions, or the straight pipe section is bent in a certain radian at a part of positions;
in the embodiment of the invention, the bent pipe 201 comprises a bent section and a straight pipe section 202, one end of the bent section is connected with the liquid storage device, and the other end of the bent section is connected with the straight pipe section; the diameter of the straight pipe section 202 is fixed; the elbow 201 connects to the compressor based on the straight tube section 202.
In the embodiment of the invention, the outer periphery of the straight pipe section 202 is provided with an outer edge end 203 of the bent pipe for matched welding; the outer edge 203 of the elbow may also be disposed on the curved section, but because the welding fit based on the outer edge 203 of the elbow is difficult to control in the curved section, in a specific implementation, the outer edge 203 of the elbow is fixed to the outer periphery of the end of the curved section away from the reservoir 200 or the outer periphery of the straight pipe section 202; the outer edge 203 of the bent pipe can be formed by processing the bent pipe 201 itself or by welding external parts;
the catheter 401 of the present embodiment has two catheter outer edge ends, a first catheter outer edge end 402 and a second catheter outer edge end 403, respectively; wherein the first conduit outer edge end 402 is necessary for welding with the elbow outer edge end 203 when the accumulator and the compressor are finally assembled, and transferring the welding center to the first conduit outer edge end 402 and the elbow outer edge end 203 to avoid the influence of high heat and thermal shock on the pipeline performance and the performance of parts near the pipeline; meanwhile, the welding mode adopts resistance welding or high-frequency induction welding and other modes, so that the total heat is smaller and the heat affected zone is more concentrated during welding, excessive heat is prevented from being transferred to positions except the outer edge end 402 of the first conduit and the outer edge end 203 of the bent pipe, and the influence of high heat and thermal shock on the performance of the communication pipeline and the compressor is reduced;
the second outer edge 403 of the pipe is used for connecting and fixing the pipe 401 and the casing 102, which is not necessary, in order to unify the processing technology, in the embodiment of the invention, the second outer edge 403 of the pipe is arranged at the other end of the pipe 401 opposite to the first outer edge 402 of the pipe, and welding is performed based on the same welding mode as the first outer edge 402 of the pipe, so as to avoid the increase of production cost caused by various welding technologies; in particular, the fixing between the catheter 401 and the housing 102 may be performed in any manner, such as soldering, welding, etc. of various types.
Fig. 3 shows various catheter structures according to a first embodiment of the invention. In a specific implementation, the first catheter outer edge 402 and the second catheter outer edge 403 may be external parts fixed on the catheter by welding or the like, as shown in a series a of fig. 3; the catheter itself may also be formed by machining, as shown in the B series of fig. 3.
In the specific implementation, in the manufacturing process of the compressor, the conduit 401 is welded to the shell 102, and because the compression mechanism in the shell 102 is not assembled at this time, the influence of heat on the compression mechanism during welding is not considered, and therefore, the welding modes can be various welding modes such as resistance welding, brazing, gas welding, friction welding and the like; after the welding of the guide tube 401 and the housing 102 is completed, the compression mechanism is mounted; after the compressor and the accumulator are assembled separately, it is necessary to communicate the accumulator 200 with the suction hole 101 of the compressor. Because the final reservoir 200 is connected to the suction hole 101 of the compressor, the reservoir and the compressor are assembled separately, and at this time, during welding, heat during welding is transferred to the compression mechanism through the connecting pipe between the reservoir 200 and the suction hole 101, so as to avoid the influence of high heat and thermal shock on the performance of the pipeline and the performance of parts near the pipeline, the welding between the elbow 201 and the pipe 401 needs to be fixed by welding based on the outer edge end 401 of the first pipe and the outer edge end 203 of the elbow, and the welding mode needs to be a welding mode with less total heat and more concentrated heat affected zone, such as resistance welding, high-frequency induction welding using low-temperature solder, and the like, so as to avoid the influence of high heat and thermal shock on the performance of the pipeline and the performance of the compressor.
In a specific implementation, when resistance welding is used, a base material needs to be heated to a melting temperature, when high-frequency induction welding is used, brazing filler metal needs to be heated to the melting temperature, in order to prevent the melted base material or brazing filler metal from entering the compression cavity 100, in a specific implementation, a slag baffle 404 for blocking the melted base material or brazing filler metal from flowing into the compression cavity 100 extends from the inner wall of the outer edge end 402 of the first conduit to the outer edge end 203 of the elbow, an inner concave step for avoiding the slag baffle 404 is formed on the inner wall of the outer edge end 203 of the elbow, and in order to prevent the slag baffle 404 and the inner concave step from being welded during welding, the slag baffle 404 and the inner concave step are not contacted with each other, and a structural schematic diagram of the embodiment is shown in fig. 2.
Similarly, in a specific implementation, the inner wall of the outer edge 203 of the elbow may also extend to the outer edge 402 of the first conduit to form a slag trap for blocking the molten base metal or brazing filler metal from flowing into the compression chamber 100, and the inner wall of the outer edge 402 of the first conduit is provided with an inner concave step for avoiding the slag trap.
In a specific implementation, when the welding mode between the first pipe outer edge 402 and the elbow outer edge 203 adopts a resistance welding mode, in order to enhance the quality of the welding seam and reduce the welding time, in a specific implementation, at least one of the two welding surfaces of the first pipe outer edge 402 and the elbow outer edge 203 has one or more protrusions in cross section; the protrusions are beneficial to increasing the section current, and a large amount of heat is generated at the protrusions in the initial stage of welding so as to reach the welding temperature of the base metal more quickly and reduce the welding time. In the embodiment of the invention, a conical bulge is arranged on the section of the welding surface of the outer edge end 402 of the first conduit; when the welding mode adopts high-frequency induction welding, the bulges are beneficial to the solder to flow between gaps formed by the bulges so as to reduce the welding time; the arrangement of the protrusions has the advantages of reducing the welding time, increasing the welding quality and the like for the welding mode based on melting of the base metal or the welding mode based on filling of the brazing filler metal, and the embodiment of the invention is not limited.
Fig. 3 shows various catheter structures according to a first embodiment of the invention. In particular implementations, the cross-sectional shape of the weld surface of the first conduit outer edge 402 may be planar, as shown by A0, B0; the cross-sectional shape may have a protrusion, as shown by A1, B1, A2, B2, A4, B4; the cross-sectional shape may have two protrusions, as shown in A3, B3; similarly, the cross-sectional shape of the second conduit outer edge end 403 may be planar; the cross-sectional shape may have a protrusion, as shown by A0, B0, A1, B1; the cross-sectional shape may have two protrusions, as shown by A2, B2, A3, B4, A4, B4; in a specific implementation, the first catheter outer edge end 402 and the second catheter outer edge end 403 with different structures can be freely combined according to actual situations; the number of the protrusions is not limited to the number limited by the embodiment of the present invention, and may be designed according to practical situations.
Fig. 4 shows a schematic structural view of the outer edge ends of three bent pipes according to the first embodiment of the invention. In a specific implementation, the welding surface of the outer edge end 203 of the elbow may be a plane, as shown in a; the cross-sectional shape may have a protrusion, as shown in b; the cross-sectional shape may have two protrusions, as shown in c; the number of the protrusions is not limited to the number limited by the embodiment of the present invention, and may be designed according to practical situations.
The shapes and the number of the protrusions of the cross-sectional shapes of the outer edge end of the first conduit, the outer edge end of the second conduit and the outer edge end of the bent pipe can be designed according to practical situations, and the above is only a part of the implementation manners listed in the embodiment of the invention.
In the above structure, the refrigerant flows out of the accumulator 200 through the elbow 201 first, and then flows into the suction hole 101 through the duct 401 and the casing 102 of the compressor; in the embodiment of the present invention, as shown in fig. 2, the end of the straight pipe section 202 of the bent pipe 201 sequentially passes through the guide pipe 401 and the housing 102 and is fitted on the air suction hole 101. After the outer edge 203 of the elbow and the outer edge 402 of the first conduit are welded, the space between the reservoir 200 and the suction hole 101 is sealed based on the elbow 201 and the conduit 401.
Fig. 5 shows a schematic diagram of a compressor suction structure according to a second embodiment of the invention. As shown in fig. 5, in the suction structure of the compressor in the second embodiment of the invention, a connecting pipe 501 is further provided, the lower end of the connecting pipe 501 is fitted on the suction hole 101, the other end passes through the casing 102, and the outer edge end 502 of the connecting pipe is provided at the end; the outer edge end 502 of the connecting pipe is clamped between the outer edge end 203 of the bent pipe and the outer edge end 402 of the first conduit, and the outer edge end 502 of the connecting pipe, the outer edge end 203 of the bent pipe and the outer edge end 402 of the first conduit are fixed in the same welding process; the straight pipe section 202 of the bent pipe 201 fits inside the connecting pipe 501 and abuts on the reducing step of the connecting pipe 501.
Fig. 6 shows a schematic structural diagram of a connection pipe 501 according to a second embodiment of the invention. In a specific implementation, one end of the connection pipe 501, which is matched with the air suction hole, may be a straight pipe or a taper pipe.
Fig. 7 is a schematic view showing the cross-sectional shape of the outer edge end of the connection pipe according to the embodiment of the present invention. The two welding surfaces of the outer edge end 502 of the connecting pipe can be plane, as shown in the structure of fig. 7-d; one or more protrusions can be arranged on the cross section of the two welding surfaces, and as shown in the structure of fig. 7-e, the cross section of the two welding surfaces is a saw tooth surface; two welding surfaces may be planar, one of which is a cross-section having one or more protrusions, not shown in fig. 7; adding protrusions on the welding surface is beneficial to improving the quality of the welding seam and reducing the welding time, for example, when resistance welding is carried out, the local current of the contact surface is improved so as to reach the welding temperature more quickly; or during brazing, the brazing filler metal can flow rapidly among gaps formed at the protruding positions, and filling of the brazing filler metal is completed more rapidly. The arrangement of the protrusions has certain beneficial effects on the welding mode based on base metal melting or solder melting, and the embodiment of the invention is not limited to an example.
Fig. 8 shows various catheter structures according to the second embodiment of the invention. Similarly, in the structure of the second embodiment of the present invention, in order to match the welding surface of the outer edge end of the connecting pipe, the cross-sectional shape of the welding surface of the outer edge end 402 of the first conduit of the conduit 401 should be adjusted accordingly. The cross-sectional shape of the welding surface of the outer edge 401 of the first conduit should be adjusted to be planar or saw-tooth or have one or more protrusions, the magnitude of which is small to ensure a reliable positioning.
Fig. 9 shows a schematic diagram of a bent pipe structure according to a second embodiment of the invention. Similarly, in the structure of the second embodiment of the present invention, in order to match the welding surface of the outer edge 502 of the connecting pipe, the cross-sectional shape of the welding surface of the outer edge 203 of the straight pipe 202 of the bent pipe 201 should be adjusted accordingly. The cross-sectional shape of the welding surface of the outer edge 203 of the bent pipe should be adjusted to be plane or saw-tooth, and the amplitude of the protrusion is smaller to ensure more reliable positioning.
In view of performance requirements, at present, materials of the bent pipe, the guide pipe and the connecting pipe are mainly metal, and the heat conduction performance of the metal is good, so that a refrigerant can generate a large amount of heat exchange with the outside through the bent pipe, the guide pipe and the connecting pipe in the process of flowing from the liquid reservoir to the air suction hole, and the energy efficiency ratio is reduced. In order to reduce heat exchange of the refrigerant in pipeline transportation, heat exchange of the refrigerant with the outside can be reduced by adding a heat insulation layer with low heat conductivity coefficient.
In the existing air suction structure of the compressor, a large amount of large-scale heat and thermal shock are generated during welding, so that the requirement on the material of the heat insulation layer is high, the material selection surface of the heat insulation layer is narrow, the cost is high, and the industrial production is not facilitated; the common industrial materials with low cost and good heat insulation property are plastics and ceramics; the plastic is easy to melt in a high-temperature environment, and the ceramic is easy to break due to unbalanced deformation in a thermal shock state, so that the ceramic is not suitable for the air suction structure of the existing compressor;
in the first embodiment and the second embodiment of the invention, the final communication between the liquid reservoir and the air suction hole is realized based on the outer edge end of the first conduit and the outer edge end of the bent pipe, and when a welding mode of low total heating value, centralized heat influence range, such as resistance welding, high-frequency induction welding, and the like is adopted, heat and heat sources are mainly centralized on the outer edge end of the first conduit and the outer edge end of the bent pipe; the temperature on the communication pipeline between the liquid storage device and the air suction hole is lower.
Therefore, based on the air suction structure of the compressor, materials such as plastics, ceramics and the like with lower cost and lower heat conductivity coefficient can be selected as the heat insulation layer material, so that the cost of the heat insulation layer is greatly reduced, and the air suction structure of the compressor is beneficial to industrial production.
Fig. 2 shows a schematic view of a heat insulating layer structure according to the first embodiment of the invention, and fig. 10 shows a schematic view of a heat insulating layer structure according to the first embodiment of the invention. When the structure of the first embodiment of the present invention is adopted, the heat insulation layer 601 may be disposed on the inner wall of the straight pipe section 202, and the heat insulation layer is fixed and limited by the variable diameters disposed at two ends of the straight pipe section 202, or is limited by fitting the assembly dimensions; in specific implementation, the lower end of the heat insulation pipe 601 can be limited by means of the air suction hole 101; as shown in fig. 11, the heat insulating layer 601 may be provided on the outer periphery of the straight pipe section 202, and may be fixed and limited by the diameter change or the fitting size of the outer periphery of the straight pipe section 202.
Fig. 5 shows a schematic diagram of a heat insulating layer structure of a second embodiment of the invention, fig. 12 shows a schematic diagram of a heat insulating layer structure of a second embodiment of the invention, and fig. 13 shows a schematic diagram of a heat insulating layer structure of a second embodiment of the invention. When the structure of the second embodiment of the invention is adopted, the heat insulation layer 601 can be matched with the inner wall of the straight pipe section 202 and the inner wall of the connecting pipe 501 as shown in the first heat insulation layer structure; the heat insulation layer 601 may also be disposed on the outer periphery of the straight pipe section 202 as shown in the second heat insulation layer structure, and fixed and limited by the diameter variation of the outer periphery of the straight pipe section 202, or limited by the fit of assembly dimensions; the heat insulation layer 601 can be sleeved in the straight pipe section 202 as shown in a heat insulation layer structure III, and the heat insulation layer 601 is limited through the air suction holes.
Fig. 14 shows a schematic view of the structure of the heat insulating layer provided on the suction hole. In the first and second embodiments of the present invention, the heat insulating layer 601 may be disposed on the inner wall of the air intake hole 101, and the conduit of the first embodiment of the present invention or the connection pipe of the second embodiment of the present invention may be fitted on the heat insulating layer 601.
In particular implementation, in order to enhance the heat insulation effect, the number of the heat insulation layers can be more than one layer, so that heat exchange between the refrigerant and the outside of the pipeline is reduced, and the energy efficiency ratio is improved.
According to the air suction structure of the compressor, provided by the embodiment of the invention, through the structural arrangement of the outer edge end of the guide pipe, the welding is realized based on the outer edge end, and the temperature on the communication pipeline between the liquid reservoir and the air suction hole of the compressor is far lower than that of the air suction structure of the existing compressor during the welding, so that on one hand, the lower temperature of the communication pipeline during the welding is ensured, and the performances of the compressor and the pipeline are not influenced; on the other hand, the heat resistance and the thermal shock resistance of the internal heat insulation pipe can be reduced, the manufacturing cost of the heat insulation pipe is reduced, the energy efficiency ratio of the compressor is improved, and the compressor has good practicability.
The compressor suction structure provided by the embodiment of the present invention has been described in detail, and specific examples are applied herein to illustrate the principles and embodiments of the present invention, and the description of the above examples is only for helping to understand the method and core idea of the present invention; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present invention, the present description should not be construed as limiting the present invention in view of the above.
Claims (7)
1. The air suction structure of the compressor is characterized by comprising the compressor, a liquid storage device, a connecting pipe, an elbow pipe and a guide pipe;
the compressor comprises a shell and a compression mechanism arranged in the shell, wherein the compression mechanism comprises a compression cavity and an air suction hole communicated with the compression cavity;
one end of the connecting pipe is matched with the air suction hole, and the other end of the connecting pipe penetrates through the shell and the guide pipe;
one end of the bent pipe is connected to the liquid storage device, and the other end of the bent pipe is connected to the compressor; the periphery of the bent pipe connected with one end of the compressor is provided with an outer edge end of the bent pipe for matched welding;
the periphery of the guide pipe is provided with a guide pipe outer edge end for matched welding;
one end of the guide pipe is fixed on the shell of the compressor, and the other end of the guide pipe is welded based on the outer edge end of the guide pipe and the outer edge end of the bent pipe;
after the outer edge end of the guide pipe and the outer edge end of the bent pipe are welded, a sealing channel is formed between the air suction hole and the liquid storage device;
the bent pipe connected with one end of the compressor passes through the guide pipe and the shell and then is matched with the air suction hole;
before welding, the welding surface of the outer edge end of the guide pipe and the welding surface of the outer edge end of the bent pipe are provided with one or more protrusions in the cross section of at least one surface;
when the outer edge end of the guide pipe and the outer edge end of the bent pipe are welded, a slag baffle plate for blocking molten parent metal and molten solder from entering the compression cavity extends from the inner wall of the outer edge end of the guide pipe to the outer edge end of the bent pipe, and an inward concave step for avoiding the slag baffle plate is formed in the inner wall of the outer edge end of the bent pipe; or the inner wall of the outer edge end of the bent pipe extends out of the slag baffle plate for blocking the molten parent metal and the molten solder from entering the compression cavity towards the outer edge end of the guide pipe, and the inner wall of the outer edge end of the guide pipe is provided with an inward concave step for avoiding the slag baffle plate;
the slag baffle and the inward concave step are not contacted with each other.
2. The compressor suction structure of claim 1, wherein the welding means based on the welding of the outer edge end of the duct and the outer edge end of the elbow is as follows: resistance welding or high frequency induction welding.
3. The compressor suction structure of claim 1, wherein the end of the connection pipe is provided with a connection pipe outer edge end; the bent pipe connected with one end of the compressor is matched with the inner wall of the connecting pipe;
the outer edge end of the connecting pipe is clamped between the outer edge end of the guide pipe and the outer edge end of the bent pipe;
and welding is realized based on the outer edge end of the guide pipe, the outer edge end of the bent pipe and the outer edge end of the connecting pipe.
4. The suction structure of the compressor as set forth in claim 1, wherein one end of the connection pipe, which is engaged with the suction hole, is a straight pipe or a taper pipe.
5. A compressor suction structure as claimed in claim 3, wherein the cross-sectional shape of at least one of the two welding surfaces of the outer edge end of the connecting pipe and the outer edge end of the elbow pipe has one or more protrusions before welding; the cross section of at least one surface of two welding surfaces of the outer edge end of the connecting pipe and the outer edge end of the guide pipe is provided with one or more protrusions.
6. A compressor suction structure, as claimed in any one of claims 1 to 5, further comprising one or more insulating layers for reducing heat exchange between the inside and outside of said sealed passageway.
7. The compressor suction structure of claim 6, wherein the heat insulating layer is fitted to the inner wall of the elbow and/or to the outer periphery of the elbow and/or to the inner wall of the suction hole when the elbow is fitted to the suction hole;
when the elbow is matched in the connecting pipe, the heat insulation layer is matched with the inner wall of the elbow and/or the periphery of the elbow and/or the inner wall of the connecting pipe and/or the periphery of the connecting pipe and/or the inner wall of the air suction hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710863120.8A CN107476958B (en) | 2017-09-22 | 2017-09-22 | Air suction structure of compressor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710863120.8A CN107476958B (en) | 2017-09-22 | 2017-09-22 | Air suction structure of compressor |
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| Publication Number | Publication Date |
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| CN107476958A CN107476958A (en) | 2017-12-15 |
| CN107476958B true CN107476958B (en) | 2023-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710863120.8A Active CN107476958B (en) | 2017-09-22 | 2017-09-22 | Air suction structure of compressor |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108759198A (en) * | 2018-06-19 | 2018-11-06 | 安徽美芝精密制造有限公司 | Refrigeration equipment, compressor and its liquid storage device |
| CN110345071B (en) * | 2019-08-26 | 2023-08-04 | 珠海格力节能环保制冷技术研究中心有限公司 | Flexible sealing structure of compressor and compressor |
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| JPS63314383A (en) * | 1987-06-18 | 1988-12-22 | Daikin Ind Ltd | Compressor |
| CN101318255A (en) * | 2007-06-04 | 2008-12-10 | 左铁军 | Method of manufacturing inserted aluminum pipe welded joint |
| CN201779032U (en) * | 2010-09-15 | 2011-03-30 | 广东美芝制冷设备有限公司 | Rotary type compressor |
| CN105402106A (en) * | 2014-09-08 | 2016-03-16 | 三菱电机株式会社 | Compressor And Method For Manufacturing Compressor |
| CN207195143U (en) * | 2017-09-22 | 2018-04-06 | 刘悦吟 | A kind of compressor air suction structure |
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2017
- 2017-09-22 CN CN201710863120.8A patent/CN107476958B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63314383A (en) * | 1987-06-18 | 1988-12-22 | Daikin Ind Ltd | Compressor |
| CN101318255A (en) * | 2007-06-04 | 2008-12-10 | 左铁军 | Method of manufacturing inserted aluminum pipe welded joint |
| CN201779032U (en) * | 2010-09-15 | 2011-03-30 | 广东美芝制冷设备有限公司 | Rotary type compressor |
| CN105402106A (en) * | 2014-09-08 | 2016-03-16 | 三菱电机株式会社 | Compressor And Method For Manufacturing Compressor |
| CN207195143U (en) * | 2017-09-22 | 2018-04-06 | 刘悦吟 | A kind of compressor air suction structure |
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| CN107476958A (en) | 2017-12-15 |
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