CN109424515B - Compressor and manufacturing method thereof - Google Patents
Compressor and manufacturing method thereof Download PDFInfo
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- CN109424515B CN109424515B CN201710792695.5A CN201710792695A CN109424515B CN 109424515 B CN109424515 B CN 109424515B CN 201710792695 A CN201710792695 A CN 201710792695A CN 109424515 B CN109424515 B CN 109424515B
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- shell
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- crankshaft
- inner hole
- compressor
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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
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
- F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
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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
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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
- F04B39/0027—Pulsation and noise damping means
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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
- F04B39/14—Provisions for readily assembling or disassembling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The present invention provides a compressor and a method for manufacturing the same, the compressor including: a housing having a central axis; the upper cylinder cover is positioned in the shell and is provided with a first inner hole with an axis parallel to the central shaft; the lower cylinder cover is positioned in the shell and is provided with a second inner hole which is coaxial with the first inner hole; the motor and the cylinder are accommodated in the shell, and the cylinder is provided with a third inner hole of which the axis is parallel to the central shaft; a crankshaft transferring a rotational force of the motor to a piston in the cylinder to compress a refrigerant, the crankshaft being inserted into the upper first, third, and second bores; before the crankshaft is inserted into the first inner hole, the upper cylinder cover or the cylinder and the shell are integrated parts; or the upper cylinder cover or the cylinder is connected with the shell. The compressor and the manufacturing method thereof provided by the invention can improve the noise of the compressor.
Description
Technical Field
The invention relates to the field of air conditioners, in particular to a compressor and a manufacturing method thereof.
Background
In general, a hermetic compressor includes a motor for generating a driving force in an inner space of a hermetic case, and a compression member coupled to the motor for compressing a refrigerant. The main application in the field of air conditioners, refrigerators, communication bases and other related refrigeration air conditioners is a rolling rotor compressor. The compression principle of the rolling rotor compressor mainly utilizes the rotating force of a motor.
The motor of the related art rolling rotor type compressor has a crank shaft through which a rotational force of the motor is transmitted to a compression part. For example, as shown in fig. 1, the main structure of the rotary hermetic compressor is as follows:
the upper and lower ends of the sealed housing 10 ' are welded to the upper and lower covers 1 ' and 5 ', respectively. The motor 20 ' is disposed in the hermetic casing 10 ', and the motor 20 ' includes a rotor 22 ' sleeved on the crankshaft 40 ' and a stator 21 ' fixed on the hermetic casing 10 '. The rotor 22 'is inserted into the stator 21' with a predetermined gap between the rotor 22 'and the stator 21', and thus rotates the rotor 22 'by interaction with the stator 21'. The crankshaft 40 ' is coupled to the rotor 22 ' to transmit the rotational force of the rotor 22 ' to the compression part. The lower portion of the crankshaft 40 'is positioned in the central axis of the hermetic case 10' by means of bearing members (the upper cylinder head 32 'and the lower cylinder head 33'). The upper cylinder head 32 'forms a friction pair with the crankshaft 40' via an internal boss structure (an inner cylinder-like structure in fig. 1).
The compressing part may include: a cylinder, a rotary piston and a vane for isolating a high-low pressure chamber in the cylinder, and a plurality of bearing members for defining a compression space together with the cylinder and supporting the crankshaft 40'. A bearing member is generally located at one side of the motor 20 'to support the crankshaft 40'.
In the prior art compressor, the bearing members (the upper cylinder head 32 ' and the lower cylinder head 33 ') and the crankshaft 40 ' are directly contacted and matched as shown in fig. 1, and the upper cylinder head 32 ' is welded with the sealed shell 10 '. In the conventional assembly process of the compressor, after the pump bodies such as the crankshaft 40 ', the upper cylinder cover 32 ', the cylinder 31 ', the lower cylinder cover 33 ' and the like are assembled, the pump bodies are connected with the shell 10 ' in the forms of welding/flange plates and the like. The inventor researches and discovers that the structure and the assembly mode have the following disadvantages: welding deformation and deflection of the rotor 22 'inevitably occur during the assembly process, and the deflection of the air gap of the stator and rotor 22' cannot be fundamentally avoided all the time. The uneven air gap between the stator 21 'and the rotor 22' may cause the collision between the rotor 22 'and the stator 21', so that the stator and the rotor are stressed more unevenly, and generate larger noise.
Disclosure of Invention
In view of the defects in the prior art, the present invention provides a compressor and a method for manufacturing the same, which can improve the noise of the compressor.
According to an aspect of the present invention, there is provided a compressor including: a housing having a central axis; the upper cylinder cover is positioned in the shell and is provided with a first inner hole with an axis parallel to the central shaft; the lower cylinder cover is positioned in the shell and is provided with a second inner hole which is coaxial with the first inner hole; the motor and the cylinder are accommodated in the shell, and the cylinder is provided with a third inner hole of which the axis is parallel to the central shaft; a crankshaft transferring a rotational force of the motor to a piston in the cylinder to compress a refrigerant, the crankshaft being inserted into the upper first, third, and second bores; before the crankshaft is inserted into the first inner hole, the upper cylinder cover or the cylinder and the shell are integrated parts; or the upper cylinder head or the cylinder and the housing are already connected to each other.
Optionally, before the crankshaft is inserted into the first inner hole, the upper cylinder cover and the housing are integrated or connected with each other, and the coaxiality of the inner diameter of the housing and the first inner hole is less than 0.5 mm.
Optionally, before the crankshaft is inserted into the first inner hole, the cylinder and the housing are integrated or connected with each other, and the coaxiality of the inner diameter of the housing and the third inner hole is less than 0.5 mm.
Optionally, the housing includes an upper portion and a lower portion divided by the upper cylinder head, the upper portion of the housing having a height H on the central axis1≥h1/5+h2+h3，h1Is the stack thickness of the motor, h2Is the height of the lower side coil of the stator of the motor on the central shaft, h3H3 is greater than 1mm for the safe electrical distance from the bottom of the lower coil to the nearest component.
Optionally, the ratio H/D of the height H of the shell on the central shaft to the outer diameter D of the shell is more than or equal to 0.3.
Optionally, the upper cylinder cover or the cylinder and the shell are formed into an integrated part through casting, forging and solid material digging-out and material removing.
Optionally, the upper cylinder cover or the cylinder and the housing are connected to each other by welding, glue bonding, shrink fitting, cold pressing, a bushing bracket, and a flange.
Optionally, the upper head or the cylinder is powder metallurgy or cast iron or steel.
According to still another aspect of the present invention, there is also provided a manufacturing method of a compressor having the structure as described above, the manufacturing method including: providing an integrated shell, wherein the upper cylinder cover or the cylinder and the shell are integrated into the integrated shell, and the coaxiality of the upper cylinder cover or the cylinder and the shell is less than 0.5 mm; inserting the crankshaft into the first inner hole of the upper cylinder cover, wherein the crankshaft and the first inner hole are coaxially arranged; sleeving a rotor of the motor on the crankshaft, wherein the rotor and the crankshaft are coaxially arranged; and fixing a stator of the motor with the integrated shell, rotationally matching the stator outside the rotor, wherein the stator and the integrated shell are coaxially arranged, and an air gap is formed between the stator and the rotor.
According to still another aspect of the present invention, there is also provided a manufacturing method of a compressor having the structure as described above, the manufacturing method including: connecting the upper cylinder cover or the cylinder with the shell to enable the coaxiality of the upper cylinder cover or the cylinder and the shell to be less than 0.5 mm; inserting the crankshaft into the first inner hole of the upper cylinder cover, wherein the crankshaft and the first inner hole are coaxially arranged; sleeving a rotor of the motor on the crankshaft, wherein the rotor and the crankshaft are coaxially arranged; and fixing a stator of the motor with the integrated shell, rotationally matching the stator outside the rotor, wherein the stator and the integrated shell are coaxially arranged, and an air gap is formed between the stator and the rotor.
Due to the adoption of the technology, the compressor and the manufacturing method realize the unification of the assembly reference and the positioning reference; the compressor does not have stress release in the assembling process, effectively reduces welding deformation, reduces the offset of the stator and the rotor, enables the air gap of the stator and the rotor to be more uniform, and improves the noise of the whole compressor.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a cross-sectional view of a prior art compressor;
fig. 2 is a sectional view of the integration of the housing and the upper cylinder head of the first embodiment of the present invention;
FIG. 3 is a sectional view of the internal assembly of the compressor housing of the first embodiment of the present invention;
FIG. 4 is a sectional view of a crankshaft in a first embodiment of the present invention;
fig. 5 is a sectional view showing the internal assembly of a compressor housing when the housing and a cylinder are integrated according to a second embodiment of the present invention.
Reference numerals
1' Upper cover
10' sealed housing
20' motor
40' crankshaft
22' rotor
21' stator
32' upper cylinder cover
31' compression member
33' lower cylinder cover
5' lower cover
10 casing
101 center shaft
40 crankshaft
401 long axis part
402 eccentric part
403 short shaft part
32 upper cylinder cover
321 first inner hole
322 axis of the first bore
31 cylinder
311 third bore
33 lower cylinder cover
331 second bore
34 piston
35 blade
Detailed Description
Hereinafter, a detailed description will be given of embodiments of the present invention. While the invention will be described and illustrated in connection with certain specific embodiments thereof, it should be understood that the invention is not limited to those embodiments. Rather, modifications and equivalents of the invention are intended to be included within the scope of the claims.
Furthermore, in the following detailed description, numerous specific details are set forth in order to provide a better understanding of the present invention. It will be understood by those skilled in the art that the present invention may be practiced without these specific details. In other instances, well-known structures and components are not shown in detail in order not to obscure the subject matter of the invention.
First embodiment
Fig. 2 is a sectional view of the housing and the upper cylinder head of the first embodiment of the present invention as integrated, as shown in fig. 2 to 4; FIG. 3 is a sectional view of the internal assembly of the compressor housing of the first embodiment of the present invention; fig. 4 is a sectional view of a crankshaft in the first embodiment of the present invention.
The compressor includes a housing 10, an upper cylinder head 32, a lower cylinder head 33, a motor (e.g., 20' in fig. 1), a cylinder 31, and a crankshaft 40. The housing 10 has an accommodating space. The housing 10 is optionally a cylindrical-like shell and has a central axis 101. The ratio H/D of the height H of the shell 10 on the central shaft 101 to the outer diameter D of the shell 10 is more than or equal to 0.3. In the embodiment of the vertical compressor, since the components are axially connected, the housing 10 needs to have a sufficient height to accommodate the components. The upper cylinder head 32 is located within the housing 10 and has a first bore 321 with an axis 322 parallel to the central axis 101. In the present embodiment, the housing 10 includes an upper portion and a lower portion divided by the upper cylinder head 32, and the upper portion of the housing 10 has a height H on the center axis 1011≥h1/5+h2+h3Wherein h is1Is the stack thickness of the motor, h2The height of the lower coil of the stator of the motor on the central shaft h3H3 is greater than 1mm for the safe electrical distance from the bottom of the lower coil to the nearest component. Therefore, the installation height of each component can be ensured, and the transportation of each component is reducedWhile in motion, friction and hence mechanical wear occurs.
In the present embodiment, the upper cylinder head 32 and the housing 10 are integrated before the crankshaft 40 is inserted into the first bore 321. For example, during the manufacture of the housing 10, the upper head 32 and the housing 10 may be formed as an integral part by casting, forging, removing solid material, or the like. In the embodiment where the upper cylinder cover 32 and the housing 10 are integrated, the integrated component can increase the assembly strength of the compressor, reduce the gap between the components to facilitate the miniaturization of the compressor, and prevent the thermal deformation of other components caused by welding before assembly, rather than welding after assembly, thereby causing the problem of misalignment. In a variation of the present embodiment, the upper head 32 and the housing 10 are connected to each other before the crankshaft 40 is inserted into the first bore 321. For example, the upper cylinder head 32 and the housing 10 are connected to each other by welding, gluing, shrink fitting, cold pressing, bushing brackets, flanges, etc. In the embodiment where the upper cylinder head 32 and the housing 10 are connected to each other before the crankshaft 40 is inserted into the first bore 321, the assembly of the compressor is more flexible than that of an integrated component, and a new mold does not need to be made, and meanwhile, the gap between the components can be reduced to facilitate the miniaturization of the compressor; the mutual connection before assembly rather than the welding after assembly can prevent the thermal deformation of other parts caused by welding, thereby generating the problem of inaccurate alignment. The upper head 32 is optionally powder metallurgical or cast iron or steel, and thus may have good hardness, whether during joining or integral molding.
The lower cylinder head 33 is located in the housing 10, and the lower cylinder head 33 has a second inner hole 331 coaxial with the first inner hole 321. The motor and the cylinder 31 are accommodated in the housing 10. The cylinder 31 has a third bore 311 with an axis parallel to the central axis 101. The crankshaft 40 is inserted into the first, third and second bores 321, 311 and 331. The crankshaft 40 transmits the rotational force of the motor to the piston in the cylinder 31 to compress the refrigerant.
Specifically, the upper cylinder head 32 and the lower cylinder head 33 serve as upper and lower covers of the cylinder 31. The eccentric portion 402 of the crankshaft 40 is located in a compression space defined by the upper and lower cylinder heads 32 and 33 and the cylinder 31 to compress refrigerant fluid flowing from the reservoir into the cylinder 31. The upper cylinder head 32 is positioned above the eccentric portion 402 of the crankshaft 40, and supports the long shaft portion 401 of the crankshaft 40. The lower cylinder head 33 is located below the eccentric portion 402 of the crankshaft 40, and supports the short shaft portion 403 of the crankshaft 40 so as to thrust the crankshaft 40.
Further, in the present embodiment, the coaxiality of the inner diameter of the housing 10 and the first inner hole 321 is less than 0.5 mm. The coaxiality, i.e. the distance between the central axis 101 of the housing 10 and the axis 322 of the first bore 321, is less than 0.5 mm. Therefore, when the crankshaft 40 is inserted into the first inner hole 321, the crankshaft can be approximately kept at the central shaft of the shell 10, when the rotor and the stator of the motor are sleeved on the crankshaft 40, the rotor and the stator can be unified with each other in terms of assembly reference and positioning reference, and meanwhile, the offset of the stator and the rotor is reduced, so that the air gap of the stator and the rotor is more uniform, and the overall noise of the compressor is improved. Specifically, the stator of the motor may be fixedly mounted directly on the inner circumference of the housing 10. Thus, the inner circumference of the shell 10 is used as the positioning reference of the motor stator, the first inner hole 321 is used as the positioning reference of the motor rotor, and the coaxiality of the first inner hole 321 and the inner circumference of the shell 10 is less than 0.1mm, so that the rotor and the stator are basically coaxial, an excellent clearance fit effect is achieved between the rotor and the stator, and abrasion and noise are reduced.
Second embodiment
Referring to fig. 5, fig. 5 is a sectional view showing an internal assembly of a compressor housing when the housing and a cylinder are integrated according to a second embodiment of the present invention.
The compressor includes a housing 10, an upper cylinder head 32, a lower cylinder head 33, a motor (e.g., 20' in fig. 1), a cylinder 31, and a crankshaft 40. The housing 10 has an accommodating space. The upper cylinder head 32 is located within the housing 10 and has a first bore 321 with an axis 322 parallel to the central axis 101.
The lower cylinder head 33 is located in the housing 10, and the lower cylinder head 33 has a second inner hole 331 coaxial with the first inner hole 321. The motor and the cylinder 31 are accommodated in the housing 10. The cylinder 31 has a third bore 311 with an axis parallel to the central axis 101. The crankshaft 40 is inserted into the first, third and second bores 321, 311 and 331. The crankshaft 40 transmits the rotational force of the motor to the piston in the cylinder 31 to compress the refrigerant.
In the present embodiment, the cylinder 31 and the housing 10 are integrated before the crankshaft 40 is inserted into the first bore 321. In the embodiment in which the cylinder 31 and the housing 10 are integrated, the integrated component can increase the assembly strength of the compressor, reduce the gap between the components to facilitate the miniaturization of the compressor, and prevent the thermal deformation of other components caused by welding before assembly, rather than welding after assembly, thereby causing misalignment. In a variation of the present embodiment, the cylinder 31 and the housing 10 are coupled to each other before the crankshaft 40 is inserted into the first bore 321. In the embodiment in which the cylinder 31 and the housing 10 are connected to each other before the crankshaft 40 is inserted into the first bore 321, the assembly of the compressor is more flexible than that of an integrated component, and a new mold does not need to be manufactured, and meanwhile, the gap between the components can be reduced to facilitate the miniaturization of the compressor; the mutual connection before assembly rather than the welding after assembly can prevent the thermal deformation of other parts caused by welding, thereby generating the problem of inaccurate alignment. The cylinder 31 is optionally powder metallurgical or cast iron or steel, whereby it may have a good hardness, whether during joining or integral forming.
In addition, in the present embodiment, the coaxiality of the inner diameter of the housing 10 and the third inner hole 331 is less than 0.5 mm. The coaxiality, i.e., the distance between the central axis 101 of the housing 10 and the axis of the third bore 331, is less than 0.5 mm. Because the upper cylinder cover 32 is connected with the cylinder 31 and can use the axis of the cylinder as a positioning reference, when the crankshaft 40 is inserted into the first inner hole 321, the crankshaft can be approximately kept at the central shaft of the shell 10, when the rotor and the stator of the motor are sleeved on the crankshaft 40, the assembly reference and the positioning reference of the rotor and the stator can be unified, and meanwhile, the offset of the stator and the rotor is reduced, so that the air gap of the stator and the rotor is more uniform, and the overall noise of the compressor is improved. Specifically, the stator of the motor may be fixedly mounted directly on the inner circumference of the housing 10. Thus, the inner circumference of the shell 10 is used as the positioning reference of the motor stator, the third inner hole 321 is used as the positioning reference of the motor rotor, and the coaxiality of the third inner hole 321 and the inner circumference of the shell 10 is less than 0.5mm, so that the rotor and the stator are basically coaxial, an excellent clearance fit effect is achieved between the rotor and the stator, and abrasion and noise are reduced.
The present invention also provides a method of manufacturing a compressor having any one of the configurations described above, corresponding to the first and second embodiments described above. The manufacturing method comprises the following steps: providing an integrated shell, wherein the upper cylinder cover or the cylinder and the shell are integrated into the integrated shell, and the coaxiality of the upper cylinder cover or the cylinder and the shell is less than 0.5 mm; inserting the crankshaft into the first inner hole of the upper cylinder cover, wherein the crankshaft and the first inner hole are coaxially arranged; sleeving a rotor of the motor on the crankshaft, wherein the rotor and the crankshaft are coaxially arranged; and fixing a stator of the motor with the integrated shell and assembling the stator and the integrated shell outside the rotor, wherein the stator and the integrated shell are coaxially arranged, and an air gap is formed between the stator and the rotor. The present invention also provides another method for manufacturing the compressor, the method comprising: connecting the upper cylinder cover or the cylinder with the shell to enable the coaxiality of the upper cylinder cover or the cylinder and the shell to be less than 0.5 mm; inserting the crankshaft into the first inner hole of the upper cylinder cover, wherein the crankshaft and the first inner hole are coaxially arranged; sleeving a rotor of the motor on the crankshaft, wherein the rotor and the crankshaft are coaxially arranged; and fixing a stator of the motor with the integrated shell and assembling the stator and the integrated shell outside the rotor, wherein the stator and the integrated shell are coaxially arranged, and an air gap is formed between the stator and the rotor.
Due to the adoption of the technology, the compressor and the manufacturing method realize the unification of the assembly reference and the positioning reference; the compressor does not have stress release in the assembling process, effectively reduces welding deformation, reduces the offset of the stator and the rotor, enables the air gap of the stator and the rotor to be more uniform, and improves the noise of the whole compressor.
Exemplary embodiments of the present invention are specifically illustrated and described above. It is to be understood that the invention is not to be limited to the disclosed embodiments, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the scope of the appended claims.
Claims (7)
1. A compressor, comprising:
a housing having a central axis;
the upper cylinder cover is positioned in the shell and is provided with a first inner hole with an axis parallel to the central shaft;
the lower cylinder cover is positioned in the shell and is provided with a second inner hole which is coaxial with the first inner hole;
the motor and the cylinder are accommodated in the shell, and the cylinder is provided with a third inner hole of which the axis is parallel to the central shaft;
a crankshaft transferring a rotational force of the motor to a piston in the cylinder to compress a refrigerant, the crankshaft being inserted into the first, third, and second bores;
wherein, before the crankshaft is inserted into the first bore,
the upper cylinder cover or the cylinder and the shell are integrated parts; or
The upper cylinder head or the cylinder and the housing have been connected to each other, wherein,
the housing includes an upper portion and a lower portion divided by the upper cylinder head, and a height H of the upper portion of the housing on the center axis1≥h1/5+h2+h3The ratio H/D of the height H of the shell on the central shaft to the outer diameter D of the shell is more than or equal to 0.3,
wherein h is1Is the stack thickness of the motor, h2Is the height of the lower side coil of the stator of the motor on the central shaft, h3The safety electrical distance h from the lower coil to the nearest component3Is larger than 1mm in the length direction,
if the upper cylinder cover and the shell are integrated parts or are mutually connected with each other before the crankshaft is inserted into the first inner hole, the coaxiality of the inner diameter of the shell and the first inner hole is less than 0.5mm,
if before the crankshaft is inserted into the first inner hole, the cylinder and the shell are integrated parts or are mutually connected with the shell, and the coaxiality of the inner diameter of the shell and the third inner hole is less than 0.5 mm.
2. The compressor of claim 1, wherein the upper head or the cylinder and the housing are formed as an integral part by casting, forging, or solid material removal.
3. The compressor of claim 1, wherein said upper head or said cylinder is interconnected with said shell by welding, gluing, shrink fitting, cold pressing, bushing brackets or flanges.
4. The compressor of claim 1, wherein the upper head or the cylinder is made by powder metallurgy.
5. The compressor of claim 1, wherein the upper head or the cylinder is cast iron or steel.
6. A manufacturing method of a compressor, characterized by being used for manufacturing the compressor according to any one of claims 1 to 5, the manufacturing method comprising:
providing an integrated shell, wherein the upper cylinder cover or the cylinder and the shell are integrated into the integrated shell, and the coaxiality of the upper cylinder cover or the cylinder and the shell is less than 0.5 mm;
inserting the crankshaft into the first inner hole of the upper cylinder cover, wherein the crankshaft and the first inner hole are coaxially arranged;
sleeving a rotor of the motor on the crankshaft, wherein the rotor and the crankshaft are coaxially arranged; and
and fixing a stator of the motor with the integrated shell, and installing the stator and the integrated shell on the outer side of the rotor, wherein the stator and the integrated shell are coaxially arranged, and an air gap is formed between the stator and the rotor.
7. A manufacturing method of a compressor, characterized by being used for manufacturing the compressor according to any one of claims 1 to 5, the manufacturing method comprising:
connecting the upper cylinder cover or the cylinder with the shell to enable the coaxiality of the upper cylinder cover or the cylinder and the shell to be less than 0.5 mm;
inserting the crankshaft into the first inner hole of the upper cylinder cover, wherein the crankshaft and the first inner hole are coaxially arranged;
sleeving a rotor of the motor on the crankshaft, wherein the rotor and the crankshaft are coaxially arranged; and
and fixing a part formed by mutually connecting the stator of the motor and the upper cylinder cover or the cylinder and the shell, and installing the part on the outer side of the rotor, wherein the stator and the integrated shell are coaxially arranged, and an air gap is formed between the stator and the rotor.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710792695.5A CN109424515B (en) | 2017-09-05 | 2017-09-05 | Compressor and manufacturing method thereof |
| PCT/CN2018/076422 WO2019047477A1 (en) | 2017-09-05 | 2018-02-12 | Compressor and fabrication method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710792695.5A CN109424515B (en) | 2017-09-05 | 2017-09-05 | Compressor and manufacturing method thereof |
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| Publication Number | Publication Date |
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| CN109424515A CN109424515A (en) | 2019-03-05 |
| CN109424515B true CN109424515B (en) | 2020-12-08 |
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| CN201710792695.5A Active CN109424515B (en) | 2017-09-05 | 2017-09-05 | Compressor and manufacturing method thereof |
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| WO (1) | WO2019047477A1 (en) |
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| CN112855535A (en) * | 2019-11-27 | 2021-05-28 | 上海海立电器有限公司 | Compressor cylinder reaches compressor including it |
| CN113803254B (en) * | 2021-08-30 | 2022-07-08 | 广州市德善数控科技有限公司 | Compressor and manufacturing method thereof |
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| JP2006200363A (en) * | 2005-01-18 | 2006-08-03 | Fujitsu General Ltd | Hermetic compressor |
| CN2816419Y (en) * | 2005-08-18 | 2006-09-13 | 乐金电子(天津)电器有限公司 | Fixing structure of upper bearing and housing of compressor |
| CN101070844A (en) * | 2006-05-12 | 2007-11-14 | 乐金电子(天津)电器有限公司 | Improved compressor |
| CN101782069B (en) * | 2010-02-25 | 2012-07-04 | 西安庆安制冷设备股份有限公司 | Closed rotor compressor and method for manufacturing same |
| CN102477984B (en) * | 2010-11-26 | 2015-05-27 | 上海日立电器有限公司 | Rotary compressor structure with uniform stator and rotor clearance |
| CN102536831A (en) * | 2012-03-13 | 2012-07-04 | 西安庆安制冷设备股份有限公司 | Air cylinder fixing mechanism of rotary compressor |
| CN103511277B (en) * | 2013-07-22 | 2016-04-06 | 广东美芝制冷设备有限公司 | Rotary compressor |
| CN203500008U (en) * | 2013-09-03 | 2014-03-26 | 广东美芝制冷设备有限公司 | Rotary compressor and refrigeration system comprising same |
| CN104747449A (en) * | 2013-12-30 | 2015-07-01 | 上海日立电器有限公司 | Double support compressor making and assembling method |
| CN104948568B (en) * | 2014-03-31 | 2018-09-11 | 珠海凌达压缩机有限公司 | Crankshaft, compressor and assembling method |
| CN105464980A (en) * | 2014-08-28 | 2016-04-06 | 上海日立电器有限公司 | Compressor and manufacturing method thereof |
| CN204357704U (en) * | 2014-12-18 | 2015-05-27 | 上海日立电器有限公司 | A kind of rotary double cylinder compressor |
| CN105114314A (en) * | 2015-08-03 | 2015-12-02 | 广东美芝制冷设备有限公司 | Rotary compressor and assembly method thereof |
| JP2017053229A (en) * | 2015-09-07 | 2017-03-16 | ジョンソンコントロールズ ヒタチ エア コンディショニング テクノロジー（ホンコン）リミテッド | Scroll compressor |
| CN107120285A (en) * | 2017-06-30 | 2017-09-01 | 广东美芝制冷设备有限公司 | The assembly method of compressor and its spring bearing |
-
2017
- 2017-09-05 CN CN201710792695.5A patent/CN109424515B/en active Active
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2018
- 2018-02-12 WO PCT/CN2018/076422 patent/WO2019047477A1/en active Application Filing
Also Published As
| Publication number | Publication date |
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| CN109424515A (en) | 2019-03-05 |
| WO2019047477A1 (en) | 2019-03-14 |
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