CN103486031B - A kind of rotary double cylinder compressor pump body assembly method - Google Patents
A kind of rotary double cylinder compressor pump body assembly method Download PDFInfo
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- CN103486031B CN103486031B CN201210196973.8A CN201210196973A CN103486031B CN 103486031 B CN103486031 B CN 103486031B CN 201210196973 A CN201210196973 A CN 201210196973A CN 103486031 B CN103486031 B CN 103486031B
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- 238000005096 rolling process Methods 0.000 claims abstract description 54
- 238000005192 partition Methods 0.000 claims description 17
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 abstract 1
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 230000009977 dual effect Effects 0.000 description 3
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- 238000004378 air conditioning Methods 0.000 description 2
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Abstract
The invention provides a kind of rotary double cylinder compressor pump body assembly method, the method comprises the following steps: the upper rolling rotor of S100, respectively measurement and the Offset of lower rolling rotor on bent axle; S200, respectively assembling upper cylinder assembly and lower cylinder assembly, wherein upper cylinder assembly comprises upper flange and upper cylinder, and lower cylinder assembly comprises lower flange and lower cylinder; S300, in upper cylinder assembly, put into rolling rotor and bent axle, central diaphragm, lower rolling rotor and lower cylinder assembly is put into respectively in the adjacent side of upper rolling rotor, the relative position of adjustment lower cylinder assembly and upper cylinder assembly, make upper flange inwall circle concentric with lower flange inwall circle, then with stay bolt, lower cylinder assembly and central diaphragm are fixed on the upper flange of upper cylinder assembly, or with stay bolt, upper cylinder assembly and central diaphragm are fixed on the lower flange of lower cylinder assembly, complete the assembling of the pump housing.It reduces assembling factor to the impact of compressor performance, and quality is guaranteed, can adapt to requirements of mass production.
Description
Technical Field
The invention relates to a method for assembling a pump body of a compressor, in particular to a method for assembling a pump body of a rotary double-cylinder compressor.
Background
With the continuous improvement of living standard of people, the requirement of consumers on the air conditioning system is higher and higher, and the rotary compressor does not need a motion conversion mechanism for converting rotary motion into reciprocating motion, so that the rotary compressor has few components, particularly few easily-damaged components, small volume, light weight, small vibration, relatively stable operation and low energy consumption, and is more and more widely applied to the air conditioning system.
According to the number of the cylinders, the rotary compressor can be divided into a single-cylinder compressor and a double-cylinder compressor, a crankshaft used by the single-cylinder compressor is a single-throw crankshaft and corresponds to one compression cavity, a crankshaft of the double-cylinder compressor is a double-throw crankshaft, each crank throw corresponds to one compression cavity, the two compression cavities form an angle of 180 degrees, each compression cavity is provided with a respective air suction and exhaust passage, and the pump body of the double-cylinder compressor needs two rolling rotors and two cylinders in terms of the number of parts. The double-cylinder compressor has two times of suction and exhaust in one circle of the rotor, so that the pressure fluctuation of gas is reduced, the change amplitude of the torque of the double-cylinder compressor is reduced and is only 30 percent of that of the single-cylinder compressor, so the vibration and the noise of the double-cylinder compressor are greatly improved, but the double-cylinder compressor also has some defects at present, the leakage is increased due to the increase of the fit clearance, so the negative influence on the performance is caused, and meanwhile, the assembly of the double-cylinder compressor is more complicated than that of a single-cylinder system, and the assembly of a pump body is a technology which is difficult to.
For the rotary double-cylinder compressor, in the existing pump body assembly method, the compressor pump body parts such as the cylinder cover and the middle partition plate are generally fixed on the cylinder through bolts, and with the progress of the rotary compressor technology, the limitations of the existing pump body assembly method are increasingly highlighted.
On the one hand, along with the development of rotation type double-cylinder compressor high efficiency, the cylinder platyzation receives designer's favor more and more, but because the cylinder height reduces, threaded connection's effective length shortens, leads to the bolt-up moment of pump body assembly to reduce for the compressor is in assembly, transportation or working process, and the pump body is under the influence of various effort, and the part produces the aversion, and pump body part clearance changes, influences compressor performance and reliability.
On the other hand, along with the development of double-cylinder variable-capacity compressors and double-stage compressors, the cylinder of the compressor needs to bear more functions, more hole sites can be designed on the cylinder wall, the strength of the cylinder wall is reduced due to the increased hole sites, and the deformation of the cylinder wall is increased under the action of bolt torque, so that the performance coefficient and the reliability of the compressor are reduced.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the pump body assembling method of the rotary double-cylinder compressor, which has the advantages of simple process, less equipment investment, guaranteed quality and capability of meeting the requirement of large-scale production. In order to achieve the purpose, the technical scheme of the invention is as follows:
a method for assembling a pump body of a rotary double-cylinder compressor comprises the following steps:
s100, respectively measuring the offset of an upper rolling rotor and a lower rolling rotor on a crankshaft;
s200, respectively assembling an upper air cylinder assembly and a lower air cylinder assembly, wherein the upper air cylinder assembly comprises an upper flange and an upper air cylinder, and the lower air cylinder assembly comprises a lower flange and a lower air cylinder;
s300, an upper rolling rotor and a crankshaft are placed in an upper cylinder assembly, a middle partition plate, a lower rolling rotor and a lower cylinder assembly are respectively placed on the adjacent sides of the upper rolling rotor, the relative position of the lower cylinder assembly and the upper cylinder assembly is adjusted, the inner wall circle of an upper flange is concentric with the inner wall circle of a lower flange, then the lower cylinder assembly and the middle partition plate are fixed on an upper flange of the upper cylinder assembly through long bolts, or the upper cylinder assembly and the middle partition plate are fixed on a lower flange of the lower cylinder assembly through the long bolts, and the assembly of the pump body is completed.
Preferably, the step S100 specifically includes:
respectively installing an upper rolling rotor and a lower rolling rotor on a crankshaft, measuring the maximum distance Xmax from the outer diameter of the upper rolling rotor to the outer diameter of the opposite side of the long shaft of the crankshaft, then measuring the maximum distance Ymax from the outer diameter of the lower rolling rotor to the outer diameter of the opposite side of the short shaft of the crankshaft, and finally respectively taking down the upper rolling rotor and the lower rolling rotor;
preferably, the step 200 specifically includes:
s210, determining an upper rolling rotor gap 1, wherein the step comprises the following steps: cylinder and last flange in the equipment, measure the inner wall of going up the cylinder and to the distance X of the different side inner wall of last flange, calculate and roll the rotor clearance:
1=X-Xmax
adjusting the relative position of the upper cylinder and the upper flange on the basis of the calculated 1, and fixing the upper cylinder on the upper flange by using a short bolt when the 1 reaches a specified range to form an upper cylinder assembly;
s220, determining a lower rolling rotor gap 2, wherein the step comprises the following steps: and (3) forming a lower cylinder and a lower flange, measuring the distance Y from the inner wall of the lower cylinder to the inner wall of the different side of the lower flange, and calculating the clearance of a lower rolling rotor:
2=Y-Ymax
and (3) adjusting the relative position of the lower cylinder lower flange on the basis of the calculated 2, and fixing the lower cylinder on the lower flange by using a short bolt when the 2 reaches a specified range to form a lower cylinder assembly.
Preferably, the upper flange, the middle partition plate and the lower flange are respectively provided with a positioning hole, and the positioning holes are positioned by using positioning pins.
Preferably, the length of the long bolt in the step S300 is 38-56 mm.
Preferably, the length of the short bolt is 6-15 mm.
Preferably, the measuring tool in step S100 or step S200 is an electric gauge or a pneumatic gauge.
Preferably, the height of the upper cylinder and the lower cylinder is 5-14 mm.
The invention has the beneficial effects that: the invention aims to provide an assembly method of a rotary double-cylinder compressor pump body, which can overcome the defects or limitations of the existing assembly method of the double-cylinder compressor pump body, reduce the influence of assembly factors on the performance of the compressor, ensure the production quality of the double-cylinder compressor pump body and meet the requirement of mass production.
Drawings
FIG. 1 is a cross-sectional view of a rolling rotor and crankshaft assembly of a rotary compressor pump body employing the method of assembly of the rotary dual cylinder compressor pump body of the present invention;
FIG. 2 is a sectional view of the upper cylinder assembly of the rotary compressor pump body utilizing the method of assembling the rotary dual cylinder compressor pump body of the present invention;
FIG. 3 is a cross-sectional view of the lower cylinder assembly of the rotary compressor pump body utilizing the method of assembling the rotary dual cylinder compressor pump body of the present invention;
fig. 4 is a sectional view of a pump body of a rotary compressor using the method for assembling a pump body of a rotary double cylinder compressor according to the present invention.
Wherein,
1, a crankshaft; 11, rolling the rotor; 12 lower rolling rotor; 2, an upper flange; 3, an upper cylinder;
31 short bolts; 4 a middle partition board; 5, a lower cylinder; 6, a lower flange; 7 long bolts.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the following will take the rotary type twin-cylinder compressor pump body for an air conditioner as an example with reference to the accompanying drawings and embodiments to further explain the method for assembling the pump body of the rotary type twin-cylinder compressor of the present invention in detail. It should be understood that the embodiments described herein are only for explaining the present invention and are not intended to limit the method for assembling the pump body of the rotary twin-cylinder compressor described in the present invention to be used for the pump body of the rotary twin-cylinder compressor for an air conditioner.
Referring to fig. 4, the rotary double-cylinder compressor pump body according to the embodiment of the present invention includes a crankshaft 1, an upper flange 2, an upper cylinder 3, an upper rolling rotor 11, a middle partition plate 4, a lower cylinder 5, a lower rolling rotor 12, and a lower flange 6, wherein the upper flange 2 is concentric with an inner wall circle of the lower flange 6.
The method for assembling the pump body of the rotary double-cylinder compressor comprises the following steps:
the first step is as follows: respectively measuring the offset of the upper rolling rotor 11 and the lower rolling rotor 12 on the crankshaft;
as shown in fig. 1, an upper rolling rotor 11 and a lower rolling rotor 12 are respectively installed on a crankshaft 1, the upper long end part of the crankshaft 1 is a long shaft of the crankshaft 1, the lower short end part of the crankshaft 1 is a short shaft of the crankshaft 1, an electric measuring instrument or an air measuring instrument is used for measuring the maximum distance Xmax from the outer diameter of the upper rolling rotor 11 to the outer diameter of the opposite side of the long shaft of the crankshaft 1, and then the maximum distance Ymax from the outer diameter of the lower rolling rotor 11 to the outer diameter of the opposite side of the short shaft of the crankshaft 1 is measured; the measured values are recorded and finally the upper rolling rotor 11 and the lower rolling rotor 12 are removed, respectively.
The second step is that: respectively assembling an upper air cylinder assembly and a lower air cylinder assembly, wherein the upper air cylinder assembly comprises an upper flange 2 and an upper air cylinder 3, and the lower air cylinder assembly comprises a lower flange 6 and a lower air cylinder 5;
as shown in fig. 2, the upper cylinder 3 and the upper flange 2 are assembled, and the distance X from the inner wall of the upper cylinder 3 to the inner wall of the upper flange 2 on the opposite side is measured by an electric gauge or an air gauge, and the gap of the upper rolling rotor 11 is calculated:
1=X-Xmax
adjusting the relative position of the upper cylinder 3 and the upper flange 2 on the basis of the calculated 1, and fixing the upper cylinder on the upper flange by using a short bolt 31 when the 1 reaches a specified range to form an upper cylinder assembly, wherein the length of the short bolt 31 is 6-15 mm;
as shown in fig. 3, the lower cylinder 5 and the lower flange 6 are assembled, and the distance Y from the inner wall of the lower cylinder 5 to the inner wall of the lower flange 6 on the opposite side is measured by an electric measuring instrument or a pneumatic measuring instrument, so as to calculate the lower rolling rotor gap:
2=Y-Ymax
and (3) adjusting the relative position of the lower cylinder lower flange on the basis of the calculated 2, and when the 2 reaches a specified range, fixing the lower cylinder 5 on the lower flange 6 by using a short bolt 31 to form a lower cylinder assembly, wherein the length of the short bolt 31 is 6-15 mm.
The third step: assembling a pump body;
as shown in figure 3, an upper rolling rotor 11 and a crankshaft 1 are placed in an upper cylinder assembly, a middle partition plate 4, a lower rolling rotor 12 and a lower cylinder assembly are respectively placed at the adjacent lower side of the upper rolling rotor 11, the relative positions of the lower cylinder assembly and the upper cylinder assembly are adjusted, the inner wall circle of an upper flange 2 is concentric with the inner wall circle of a lower flange 6, then the lower cylinder assembly and the middle partition plate 4 are fixed on the upper flange 2 of the upper cylinder assembly by using a long bolt 7, or the upper cylinder assembly and the middle partition plate 4 are fixed on the lower flange 6 of the lower cylinder assembly by using a long bolt 7, and the assembly of a pump body is completed, wherein the length of the long bolt 7 is 38-56 mm.
As an implementation manner, the method for determining the concentricity of the inner wall circles of the upper flange 2, the middle partition plate 4 and the lower flange 6 is to use an automatic centering device or to respectively open positioning holes on the upper flange 2, the middle partition plate 4 and the lower flange 6 and use positioning pins to position the three.
As another possible embodiment, the height of the upper cylinder 2 and the lower cylinder 3 is 5 to 14 mm.
Compared with the general pump body assembly method, the pump body assembly method of the rotary double-cylinder compressor in the embodiment has the advantages that the cylinder height of the compressor is not limited by the pump body assembly process because the pump body assembly method is fixed on the upper flange, the lower flange and the middle partition plate in a threaded connection manner, the cylinder flattening design is facilitated, and the energy efficiency of the compressor is improved; the deformation of the air cylinder is small, the friction and the abrasion among pump body parts during the operation of the compressor are reduced, and the energy efficiency and the reliability of the compressor are improved; for the air cylinder with the height of 5-14 mm, the assembly scheme is adopted, the reliability of threaded connection can be effectively improved, and the assembly quality is guaranteed.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (7)
1. A method for assembling a pump body of a rotary double-cylinder compressor is characterized by comprising the following steps:
s100, respectively measuring the offset of an upper rolling rotor and a lower rolling rotor on a crankshaft;
s200, respectively assembling an upper air cylinder assembly and a lower air cylinder assembly, wherein the upper air cylinder assembly comprises an upper flange and an upper air cylinder, and the lower air cylinder assembly comprises a lower flange and a lower air cylinder;
the step 200 specifically comprises: s210, determining an upper rolling rotor gap 1, wherein the step comprises the following steps: cylinder and last flange in the equipment, measure the inner wall of going up the cylinder and to the distance X of the different side inner wall of last flange, calculate and roll the rotor clearance:
1=X-Xmax
adjusting the relative position of the upper cylinder and the upper flange on the basis of the calculated 1, and fixing the upper cylinder on the upper flange by using a short bolt when the 1 reaches a specified range to form an upper cylinder assembly; s220, determining a lower rolling rotor gap 2, wherein the step comprises the following steps: assembling a lower cylinder and a lower flange, measuring the distance Y from the inner wall of the lower cylinder to the inner wall of the lower flange on the different side, and calculating the clearance of a lower rolling rotor:
2=Y-Ymax
adjusting the relative position of a lower cylinder lower flange on the basis of the calculated 2, and fixing the lower cylinder on the lower flange by using a short bolt when the 2 reaches a specified range to form a lower cylinder assembly;
wherein Xmax is the maximum distance from the outer diameter of the upper rolling rotor to the outer diameter of the different side of the long shaft of the crankshaft, and Ymax is the maximum distance from the outer diameter of the lower rolling rotor to the outer diameter of the different side of the short shaft of the crankshaft;
s300, an upper rolling rotor and a crankshaft are placed in an upper cylinder assembly, a middle partition plate, a lower rolling rotor and a lower cylinder assembly are respectively placed on the adjacent sides of the upper rolling rotor, the relative position of the lower cylinder assembly and the upper cylinder assembly is adjusted, the inner wall circle of an upper flange is concentric with the inner wall circle of a lower flange, then the lower cylinder assembly and the middle partition plate are fixed on an upper flange of the upper cylinder assembly through long bolts, or the upper cylinder assembly and the middle partition plate are fixed on a lower flange of the lower cylinder assembly through the long bolts, and the assembly of the pump body is completed.
2. The method for assembling a pump body of a rotary double-cylinder compressor according to claim 1, wherein the step S100 is specifically:
respectively installing the upper rolling rotor and the lower rolling rotor on a crankshaft, measuring the maximum distance Xmax from the outer diameter of the upper rolling rotor to the outer diameter of the opposite side of the long shaft of the crankshaft, then measuring the maximum distance Ymax from the outer diameter of the lower rolling rotor to the outer diameter of the opposite side of the short shaft of the crankshaft, and finally respectively taking down the upper rolling rotor and the lower rolling rotor.
3. The method for assembling a pump body of a rotary double-cylinder compressor according to claim 1, wherein:
and the upper flange, the middle partition plate and the lower flange are respectively provided with a positioning hole, and the positioning holes are positioned by using positioning pins.
4. The method for assembling a pump body of a rotary double-cylinder compressor according to claim 1, wherein:
the length of the long bolt in the step S300 is 38-56 mm.
5. The method for assembling a pump body of a rotary double-cylinder compressor according to claim 1, wherein:
the length of the short bolt is 6-15 mm.
6. The method for assembling the pump body of a rotary double-cylinder compressor according to any one of claims 1 to 2, characterized in that:
the measuring tool in the step S100 or the step S200 is an electric gauge or a pneumatic gauge.
7. The method for assembling a pump body of a rotary twin-cylinder compressor according to any one of claims 1 to 5, wherein:
the height of the upper cylinder and the height of the lower cylinder are 5-14 mm.
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| CN201210196973.8A CN103486031B (en) | 2012-06-14 | 2012-06-14 | A kind of rotary double cylinder compressor pump body assembly method |
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| CN201210196973.8A CN103486031B (en) | 2012-06-14 | 2012-06-14 | A kind of rotary double cylinder compressor pump body assembly method |
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| CN103486031B true CN103486031B (en) | 2015-12-16 |
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| CN109356851B (en) * | 2018-10-15 | 2024-06-07 | 珠海格力节能环保制冷技术研究中心有限公司 | Variable capacity compressor and refrigeration equipment |
| CN110332114A (en) * | 2019-06-10 | 2019-10-15 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of compressor pump structure, assembly method and rotor compressor |
| CN112229101B (en) * | 2020-10-26 | 2022-08-02 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor and air conditioning system |
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| JPS63297791A (en) * | 1987-05-29 | 1988-12-05 | Matsushita Electric Ind Co Ltd | Assembly method of rotating type sealed electric compressor with two cylinders |
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| CN101397997A (en) * | 2008-10-24 | 2009-04-01 | 珠海格力电器股份有限公司 | Assembly method of rotary double-cylinder compressor pump body |
| CN102121474A (en) * | 2010-01-07 | 2011-07-13 | 珠海格力电器股份有限公司 | Pump body assembling method of double-cylinder rotary compressor |
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2012
- 2012-06-14 CN CN201210196973.8A patent/CN103486031B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63297791A (en) * | 1987-05-29 | 1988-12-05 | Matsushita Electric Ind Co Ltd | Assembly method of rotating type sealed electric compressor with two cylinders |
| JPH03225097A (en) * | 1990-01-31 | 1991-10-04 | Sanyo Electric Co Ltd | Two-cylinder rotary compressor assembling method |
| CN1451864A (en) * | 2002-04-16 | 2003-10-29 | 上海日立电器有限公司 | Double-cylinder rotary compressor eccentrically assembling method |
| CN1796790A (en) * | 2004-12-22 | 2006-07-05 | 上海日立电器有限公司 | Method for assembling pump-body of compressor with revolving twin cylinder |
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