JP2011026992A - Rotary compressor, method for manufacturing the same, and device for manufacturing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a multi-cylinder type rotary compressor of a small size and a large capacity capable of suppressing the leakage of a refrigerant in a compression mechanism part. <P>SOLUTION: The rotary compressor includes a crankshaft 108 having a plurality of eccentric parts; a plurality of cylinders forming a compression chamber between an outer periphery and an inner periphery of the eccentric parts; first and second frame bodies 109 and 116 having the cylinders therebetween and arranged at both ends of the axial direction of the crankshaft, and having a bearing of the crankshaft; and a partition plate 114 partitioning the cylinders and having a crankshaft insertion hole. The partition plate 114 is divided into a plurality of parts, and the divided surface of the partition plate 114 is a plane surface laid on the crankshaft insertion hole and obliquely tilted from the axis of the crankshaft. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a rotary compressor with little leakage of a medium such as a refrigerant in a compression mechanism, a manufacturing method thereof, and a manufacturing apparatus thereof.

  Conventionally, there has been a rotary compressor shown in Patent Document 1. In this rotary compressor, an electric element (motor) and a plurality of rotary compression elements (first and second rotary compression elements) are housed in an airtight container, and the electric element and the plurality of rotary compression elements are provided with an eccentric portion. It is connected with a crankshaft. The partition plate interposed between the rotary compression elements is composed of two divided plates, and the two divided plates are joined via a seal member, and a crankshaft insertion hole is formed across the two divided plates. Is done.

  According to the rotary compressor of Patent Document 1, even if the diameter and the amount of eccentricity of the crankshaft are increased in order to increase the output of the compressor, the crankshaft insertion hole of the partition plate The shaft diameter may be about the same, and a multi-cylinder rotary compressor with high output can be easily provided.

Japanese Patent Laid-Open No. 54-121405

In the structure of the rotary compressor, not only the gap between the junctions of the partition plate, but also the gap between the partition plate and the cylinders and rollers arranged on the upper and lower end surfaces of the partition plate is reduced, so that no refrigerant leaks. It is necessary to do so.
In the compressor of the above-mentioned patent document 1, the leakage of the refrigerant between the junctions of the partition plates is reduced by interposing a seal member between the junctions of the partition plates. However, no investigation has been made on leakage from the gap between the partition plate and the cylinders and rollers disposed on the upper and lower end surfaces of the partition plate.
In addition, by interposing the seal member at the joint portion of the partition plate, the accuracy of the joint surface serving as a reference for assembling the partition plate is deteriorated. Therefore, the flatness of the upper and lower end surfaces of the partition plate, which is a contact surface with the cylinder and the rotor, deteriorates, and there is a problem that the gap between the partition plate and the cylinder and the roller is increased, and the refrigerant leaks. .
In addition, in order for the seal member interposed between the junctions of the partition plate to function, a force in a direction perpendicular to the crankshaft axis is required, so a sub-assembly operation of fastening the partition plate using bolts is necessary. Therefore, there is a problem that the number of parts and the number of assembly steps are required.

  The present invention has been made in order to solve the above-described problems, and an object of the present invention is to obtain a rotary compressor in which the medium of the compression mechanism portion is less leaked.

  The rotary compressor according to the present invention includes a motor and a compression mechanism in a sealed container. The compression mechanism corresponds to a crankshaft driven by the motor and having a plurality of eccentric parts, and a plurality of eccentric parts. And a plurality of cylinders that form a compression chamber between the outer periphery of the eccentric part and the inner peripheral part thereof, and are installed at both ends in the crankshaft axial direction with the plurality of cylinders interposed therebetween, and the crankshaft The first and second frames having the bearings, and a rotary compressor provided with a partition plate that partitions a plurality of cylinders and has a crankshaft insertion hole, wherein the partition plate is divided into a plurality of parts. The dividing surface is a plane that spans the crankshaft insertion hole and is inclined obliquely from the crankshaft axis.

A method of manufacturing a rotary compressor according to the present invention includes a motor and a compression mechanism in a sealed container, and the compression mechanism is driven by the motor and has a plurality of eccentric parts, and a plurality of eccentric parts. And a plurality of cylinders that form a compression chamber between the outer periphery of the eccentric portion and the inner peripheral portion thereof, and are installed at both ends in the crankshaft axial direction with the plurality of cylinders sandwiched therebetween. And a first and second frame body having a crankshaft bearing, and a method of manufacturing a rotary compressor including a partition plate that partitions a plurality of cylinders and has a crankshaft insertion hole,
A step of disposing a partition plate between each cylinder and having a plane that is divided into a plurality and that has a split surface that extends over the crankshaft insertion hole and that is inclined obliquely from the crankshaft axis;
Pressing the partition plate divided into a plurality in the axial direction of the crankshaft shaft;
A step of fastening the plurality of cylinders, the first and second frame bodies, and the partition plate is provided.

An apparatus for manufacturing a rotary compressor according to the present invention includes a crankshaft having a plurality of eccentric portions, a compression chamber arranged corresponding to the plurality of eccentric portions, and between an outer periphery of the eccentric portion and an inner peripheral portion thereof. A plurality of cylinders, a first frame and a second frame body having crankshaft bearings disposed between both ends of the crankshaft axially with a plurality of cylinders sandwiched therebetween, and partitioning between the plurality of cylinders An apparatus for manufacturing a rotary compressor including a compression mechanism having a partition plate having a crankshaft insertion hole,
A base for installing and positioning the compression mechanism section, and a partition plate having a plane that is divided into a plurality of parts and whose divided surfaces straddle the insertion hole of the crankshaft shaft and that is inclined with respect to the crankshaft shaft. A pressing mechanism that presses in the direction, and a fastening mechanism that fastens the plurality of cylinders, the first and second frame bodies, and the partition plate are provided.

  In the rotary compressor according to the present invention, the partition plates for partitioning the cylinders are divided into a plurality of parts, and the partition surface of the partition plate is a plane that extends over the crankshaft insertion hole and is inclined obliquely from the crankshaft axis. The contact area between the divided partition plates is increased, and the sealing performance of a medium such as a refrigerant is improved.

  A rotary compressor manufacturing method and manufacturing apparatus according to the present invention includes a plurality of divided partition plates installed between cylinders with a crankshaft interposed therebetween, and the divided partition plates are arranged in the axial direction of the crankshaft shaft. The compression mechanism can be assembled without sub-assembling the divided partition plates by fastening the plurality of cylinders, the first and second frame bodies, and the partition plates in the pressed state. Thus, it is possible to provide a multi-cylinder rotary compressor with a small number of parts and a small number of man-hours.

It is a longitudinal cross-sectional view of the rotary compressor by Embodiment 1 of this invention. It is a cross-sectional view of the rotary compressor by Embodiment 1 of this invention. It is a perspective view of the partition plate by Embodiment 1 of this invention. It is a flowchart of the surface finishing process of the partition plate in the manufacturing method of the rotary compressor by Embodiment 2 of this invention. It is a front view of the fixed jig used for Embodiment 2 of this invention. It is a top view of the fixed jig used for Embodiment 2 of this invention. It is a front view of the state which the fixed jig used for Embodiment 2 of this invention inclines. It is front sectional drawing of the assembly apparatus of the compression mechanism part by Embodiment 3 of this invention. It is a top view of the partition plate and V-shaped clamper by Embodiment 3 of this invention. It is a flowchart of the assembly process of the compression mechanism part by Embodiment 3 of this invention. It is a flowchart of the assembly process of the compression mechanism part by Embodiment 3 of this invention. It is front sectional drawing which shows 1 step of the assembly process of the compression mechanism part by Embodiment 3 of this invention. It is sectional drawing which shows the pressure distribution of the compression chamber of the compression mechanism part by Embodiment 3 of this invention. It is a front view which shows the state of the partition plate in 1 step of the assembly process of the compression mechanism part by Embodiment 3 of this invention.

Embodiment 1 FIG.
Hereinafter, a rotary compressor according to Embodiment 1 of the present invention will be described with reference to the drawings. FIG. 1 is a longitudinal sectional view of the rotary compressor according to the first embodiment, and FIG. 2 is a transverse sectional view taken along line AA of the rotary compressor of FIG. In the first embodiment, a two-cylinder rotary compressor for a refrigeration / air conditioner having two compression chambers will be described as an example.

  The rotary compressor 100 according to the present embodiment includes a shell 101 that is a hermetic container, a motor 102 that is a drive source installed inside the shell 101, and a compression mechanism unit 103 that is also installed inside the shell 101. . The shell 101 includes an upper shell 101a, an intermediate shell 101b, and a lower shell 101c. The upper shell 101a is provided with a glass terminal 104 for supplying electric power to the motor 102 from the outside, and a discharge pipe 105 for discharging the compressed refrigerant to the outside of the compressor. The intermediate shell 101 b has a motor 102 and a compression mechanism 103 fixed thereto, and a suction pipe 106 that guides the refrigerant to the compression mechanism 103 is fixed. The suction pipe 106 is connected to a suction muffler 107, and gas-liquid separation of the refrigerant and removal of dust in the refrigerant are performed in the suction muffler 107.

  The motor 102 has a stator 102a and a rotor 102b, and the rotor 102b is attached to the crankshaft 108. The rotational torque generated by the motor 102 is transmitted to the compression mechanism unit 103 through the crankshaft 108.

  The compression mechanism 103 includes a crankshaft 108, a first frame 109 having a first bearing 109a formed on the inner periphery, a first cylinder 110, a first spring 111, a first vane 112, a first roller 113, and a partition plate. 114, a second cylinder 115, a second bearing 116 a having a second frame 116 formed on the inner periphery, a second spring 117, a second vane 118, and a second roller 119.

  The crankshaft 108 includes a rotor fitting portion 120, a first bearing insertion portion 121, a first eccentric portion 122, an intermediate portion 123, a second eccentric portion 124, and a second bearing insertion portion 125. The first eccentric portion 122 and the second eccentric portion 124 have an eccentric phase that is 180 degrees different, and the first roller 113 and the second roller 119 are attached to the respective outer peripheral surfaces.

  A space surrounded by the lower end surface of the first frame 109, the inner peripheral surface of the first cylinder 110, the upper end surface of the partition plate 114, and the outer peripheral surface of the first roller 113 becomes the first compression chamber 126. A space surrounded by the lower end surface of the partition plate 114, the inner peripheral surface of the second cylinder 115, the upper end surface of the second frame 116, and the outer peripheral surface of the second roller 119 is the second compression chamber 127. A first spring 111 and a second spring 117 that extend and contract in the radial direction are attached to the first cylinder 110 and the second cylinder 115, and the first vane 112 and the second vane 118 are made to be the first roller by the pressing force of each spring. 113 and the outer peripheral surface of the second roller 119. The first vane 112 and the second vane 118 have a function of dividing the first compression chamber 126 and the second compression chamber 127 into a low pressure portion 128 and a high pressure portion 129. In this example, the first vane 112 and the second vane 118 have the same phase.

  As shown in FIG. 3, the partition plate 114 is formed by combining a first partition plate 130 and a second partition plate 131. The 1st partition plate 130 has four surfaces, the upper end surface 130a, the lower end surface 130b, the division surface 130c, and the outer peripheral surface 130d. The dividing surface 130c has a groove 130d for inserting the crankshaft 108. The second partition plate 131 has four surfaces: an upper end surface 131a, a lower end surface 131b, a dividing surface 131c, and an outer peripheral surface 131d. The dividing surface 131c has a groove 131d for inserting the crankshaft 108. The first partition plate 130 and the second partition plate 131 are provided with a plurality of bolt fastening holes 130e and 131e (three each in this example) used for assembling the compression mechanism 103.

  The dividing surface 130c of the first partition plate 130 and the dividing surface 131c of the second partition plate 131 are planes inclined obliquely with respect to the crankshaft axis. The inclination angle of the dividing surface 130c of the first partition plate 130 with respect to the crankshaft axis is equal to the inclination angle of the dividing surface 131c of the second partition plate 131 with respect to the crankshaft axis. When the first partition plate 130 and the second partition plate 131 are assembled with the dividing surface 130c and the dividing surface 131c in contact with each other, the upper end surface 130a of the first partition plate 130 and the upper end surface 131a of the second partition plate 131 are The lower end surface 130b of the first partition plate 130 and the lower end surface 131b of the second partition plate 131 are on the same plane. Therefore, when the compression mechanism unit 103 is assembled, the joint between the first partition plate 130 and the second partition plate 131, and the first partition plate 130, the second partition plate 131, the first cylinder 110, and the second cylinder 115 are combined. The gap between them becomes small, and refrigerant leakage during operation of the rotary compressor is reduced. Furthermore, since the joint portion of the first partition plate 130 and the second partition plate 131 is inclined obliquely with respect to the crankshaft axis, the first partition plate is compared with the case where the joint portion is parallel to the crankshaft shaft. The contact width between 130 and the second partition 131 is increased, and the sealing performance when assembled is improved.

  As described above, the first partition plate 130 and the second partition plate 131 are assembled so that the divided surface 130c and the divided surface 131c are in contact with each other. At this time, the groove 130d of the first partition plate 130 and the groove 131d of the second partition plate 131 face each other to form the crankshaft insertion hole 132. The diameter of the crankshaft insertion hole 132 is larger than the diameter of the intermediate portion 123 of the crankshaft 108 and smaller than the diameters of the first eccentric portion 122 and the second eccentric portion 124. Due to such a structure, even if the eccentric amount of the eccentric portion of the crankshaft 108 is large, the diameter of the crankshaft insertion hole 132 can be reduced, and leakage from the crankshaft insertion hole 132 is reduced. be able to.

  The rotary compressor 100 according to the present embodiment drives the motor 102 installed inside the shell 101 by energization from the glass terminal portion 105, and the crankshaft 108 having the first eccentric portion 122 and the second eccentric portion 124 is driven. Rotate. Then, through the suction muffler 107 and the suction pipe 106, the refrigerant flows into the first compression chamber 126 formed by the first cylinder 110, the first vane 112 and the first roller 113, and the second cylinder 115, the second vane 118 and the first The air is sucked into the second compression chamber 127 formed by the two rollers 119, is compressed as the crankshaft 108 rotates, and is discharged into the shell 101 from the discharge port 133 when the pressure reaches a certain level. Is discharged.

  As described above, according to the present embodiment, in the rotary compressor having a plurality of cylinders, the partition plates that partition the cylinders are divided into a plurality of portions, and the partition surfaces of the partition plates span the crankshaft insertion holes. At the same time, since the plane is inclined obliquely from the crankshaft axis, the contact area between the plurality of partition plates is increased, and the sealing performance of a medium such as a refrigerant is improved. In addition, it is possible to realize a rotary compressor that is small and has a large capacity and has little leakage.

  In the above-described embodiment, the case where the partition plate that divides each cylinder is divided into the first and second partition plates has been described. However, the partition plate may be divided into three or more. However, as in this embodiment, when divided into two parts, the first and second partition plates, there are advantages that the sealing performance is better, the number of parts is reduced, and the assembly work is simplified. is there.

Embodiment 2. FIG.
Next, the surface finishing process of the partition plate of the compression mechanism part of the rotary compressor according to the second embodiment of the present invention will be described. The rotary compressor described in the second embodiment has the same configuration as the rotary compressor described in the first embodiment, and the same component numbers as those in the first embodiment are used in the second embodiment.

  In the surface finishing process of the partition plate according to the present embodiment, the surface of the first partition plate 130 and the second partition plate 131 is formed after the first partition plate 130 and the second partition plate 131 are molded, drilled, cut, and the like. This is a process performed to improve accuracy. FIG. 4 is a flowchart showing the procedure of the surface finishing process of the partition plate according to the present embodiment. The fixed jig 200 used in STEP 3 to STEP 6 in the flowchart of FIG. 4 is shown in FIGS. 5 is a front view showing a state in which the first partition plate 130 and the second partition plate 131 are set on the fixed jig 200, FIG. 6 is a plan view of the fixed jig 200 of FIG. 5, and FIG. It is a front view which shows the state which inclined the fixed jig | tool 200. FIG.

Hereinafter, description will be made based on the flowchart of FIG.
In STEP1, the first partition plate 130 and the second partition plate 131 are set on a holding jig set on a table of a rotary grinding machine. At this time, the first partition plate 130 and the second partition plate 131 are set so that the upper and lower end surfaces thereof are on the same plane.
In STEP2, the upper and lower end surfaces of the first partition plate 130 and the second partition plate 131 are ground simultaneously by a rotary grinder.
In STEP 3, the first partition plate 130 is set on the fixed jig 200 set on the table of the surface grinding machine.
In STEP 4, the fixed jig 200 includes an upper end surface 130a of the first partition plate 130 and a lower end surface 131b of the second partition plate 131, and a lower end surface 130b of the first partition plate 130 and an upper end surface 131a of the second partition plate 131, respectively. The 2nd partition plate 131 is set so that it may become the same plane.
In STEP 5, the fixed jig 200 is tilted by a predetermined angle.
In STEP 6, the dividing surface 130c of the first partition plate 130 and the dividing surface 131c of the second partition plate 131 are ground simultaneously by a surface grinder.

  As described in STEP 1 and STEP 2 in the flowchart of FIG. 4, by simultaneously grinding the upper and lower end surfaces of the first partition plate 130 and the second partition plate 131, the thickness of the first partition plate 130 and the second partition plate 131 can be adjusted. The difference is extremely small, and the steps generated on the dividing surfaces 130c and 131c when the first partition plate 130 and the second partition plate 131 are assembled are extremely small. For this reason, the gap between the first partition plate 130 and the second partition plate 131 and the first cylinder 110 and the second cylinder 115 when the compression mechanism 103 is assembled is reduced, so that the refrigerant leakage during operation is reduced. The efficiency of the rotary compressor is improved.

  A fixed jig 200 used in STEP 3 to STEP 6 in the flowchart of FIG. 4 will be described with reference to FIGS. 5, 6, and 7. The fixed jig 200 includes a holding unit 201 that holds the first partition plate 130 and the second partition plate 131, a tilting mechanism 202 that tilts the holding unit 201, and a base unit 203 that serves as a base for the tilting mechanism 202. Two holding parts 201 are provided so that the 1st partition plate 130 and the 2nd partition plate 131 can be fixed simultaneously, the upper end surface 130a of the 1st partition plate 130, the lower end surface 131b of the 2nd partition plate 131, and The first partition plate 130 and the second partition plate 131 can be set so that the lower end surface 130b of the first partition plate 130 and the upper end surface 131a of the second partition plate 131 are in the same plane. The tilt mechanism 202 can tilt the holding unit 201 at a certain angle from the base unit 203, and the dividing surface 130 c of the first partition plate 130 and the dividing surface 131 c of the second partition plate 131 set in the holding unit 201 are the base unit 203. That is, the holding part 201 can be inclined until it becomes parallel to the grinder table (not shown).

  As described in STEP 3 to STEP 6 of FIG. 4 and FIGS. 5, 6, and 7, the dividing surfaces 130 c and 131 c are simultaneously ground while the first partition plate 130 and the second partition plate 131 are inclined, so that the division is performed. The difference between the inclination angles of the surfaces 130c and 131c is extremely small.

  As described above, in the present embodiment, the upper and lower end surfaces of the first partition plate 130 and the second partition plate 131 are processed simultaneously, so that the difference in plate thickness between the first partition plate 130 and the second partition plate 131 is extremely small. Can be.

  In addition, the first partition plate 130 and the second partition plate 131 have the upper end surface aligned with the lower end surface of the first partition plate 130 and the upper end surface of the second partition plate 131 in the same plane. By simultaneously processing the dividing surface 130c of the partition plate 130 and the dividing surface 131c of the second partition plate 131, the difference in inclination angle between the dividing surface 130c of the first partition plate 130 and the dividing surface 131c of the second partition plate 131 can be extremely reduced. Can be small.

  Furthermore, when assembling the compression mechanism described in the third embodiment below, the upper end surface of the first partition plate 130 and the upper end surface of the second partition plate 131, the lower end surface of the first partition plate 130, and the second By assembling with the lower end surfaces of the partition plates 131 aligned, the upper and lower end surfaces of the first partition plate 130 and the second partition plate 131 can be assembled on the same plane without a gap between the split surfaces. As a result, when the compression mechanism unit 103 is assembled, the upper and lower end surfaces of the first and second partition plates 130 and 131 and the first and second cylinders are divided between the first partition plate 130 and the second partition plate 131. In addition, it is possible to manufacture a rotary compressor in which no gap is formed between the first and second rollers and the refrigerant leaks less during operation.

Embodiment 3 FIG.
Next, an assembling apparatus and assembling process for a compression mechanism portion of a rotary compressor according to Embodiment 3 of the present invention will be described. The rotary compressor described in the third embodiment has the same configuration as the rotary compressor described in the first embodiment, and the same component numbers as those in the first embodiment are used in the third embodiment.

(1) Assembling apparatus for compression mechanism section FIG. 8 is a front sectional view showing an assembling apparatus 300 for a compression mechanism section of a rotary compressor according to the present embodiment, and FIG. 9 is a sectional view taken along line BB in FIG. .
The compression mechanism unit assembly apparatus 300 includes a base 301, a clamper drive mechanism 302, a positioning pin 303, a V-shaped clamper 304 driven by the clamper drive mechanism 302, a frame body gripping mechanism 305, and an axis adjustment mechanism 306. And a bolt fastening mechanism 307. A clamper driving mechanism 302 and a positioning pin 303 are installed on the base 301, and a first cylinder 110 can be installed on the base 301. A V-shaped clamper 304 is attached to the clamper driving mechanism 302, and by driving the clamper driving mechanism 302, the V-shaped clamper 304 advances in the direction of the first and second partition plates 130 and 131, and the first and second partitions The plates 130 and 131 can be held and pressed in the axial direction of the crankshaft 108. In addition, a frame body gripping mechanism 305 and an axis adjustment mechanism 306 are connected above the base 301, and the frame body gripping mechanism 305 holds the second frame body 116 having the second bearing 116a and the first frame body. The shaft center of the 109 first bearing 109a and the second bearing 116a of the second frame 116 are adjusted, and the position of the second frame 116 having the second bearing 116a is adjusted so that the respective shaft centers are on the same straight line. Can be adjusted. Further, a bolt fastening mechanism 307 is installed above the base 301, and the second frame 116 having the second bearing 116a, the second cylinder 115, the first and second partition plates 130 and 131, and the first One cylinder 110 can be fastened with a bolt.

(2) Assembling process of compression mechanism part Next, the procedure of the assembling process of the compression mechanism part is demonstrated based on the flowchart shown in FIG.10 and FIG.11.
FIG. 10 is a flowchart showing an assembly process of the first cylinder 110 and the first frame 109 and the second cylinder 115 and the second frame 116.
In STEP 10, the eccentric amounts of the first bearing insertion portion 121 and the first eccentric portion 122 of the crankshaft 108 are measured.
In STEP 11, the eccentric amounts of the second bearing insertion portion 125 and the second eccentric portion 124 of the crankshaft 108 are measured.
In STEP 12, the first frame 109 having the first cylinder 110 and the first bearing is moved between the outer periphery of the first roller 113 and the inner periphery of the first cylinder 110 when the crankshaft 108 is rotated based on the measurement result of the eccentric amount. Assemble so that the gap is optimal. In this example, the first cylinder 110 and the first frame 109 are each provided with six bolt holes. In STEP 3, bolts are inserted into the three bolt holes, and the first cylinder 110 and the first frame 109 are connected to the first cylinder 110 and the first frame 109, respectively. The frame body 109 is fixed.
In STEP 13, the second frame 116 having the second cylinder 115 and the second bearing is moved between the outer periphery of the second roller 119 and the inner periphery of the second cylinder 115 when the crankshaft 108 is rotated based on the measurement result of the eccentricity. Assemble so that the gap is optimal. In this example, each of the second cylinder 115 and the second frame 116 is provided with six bolt holes. In STEP 4, bolts are inserted into the three bolt holes, and the second cylinder 115 and the second frame 116 are connected to each other. The frame body 116 is fixed.

FIG. 11 is a flowchart showing an assembly process of the compression mechanism unit 103 using the assembly mechanism 300 of the compression mechanism unit.
In STEP 20, the first cylinder 110 to which the first frame 109 is fixed in STEP 12 is installed on the base 203 of the assembling apparatus 300. At this time, positioning is performed by inserting positioning pins 303 into the remaining three bolt holes for fixing the first cylinder 110 and the first frame 109.
In STEP 21, the first roller 113 and the first vane 112 are inserted into the first cylinder 110.
In STEP 22, the crankshaft 108 is inserted into the first cylinder 110 and the first bearing 109 a of the first frame 109.
In STEP 23, the first partition plate 130 and the second partition plate 131 are installed on the first cylinder 110. At this time, the split surface 130c of the first partition plate 130 and the split surface 131c of the second partition plate 131 are aligned so that the intermediate portion 123 of the crankshaft 108 passes through the crankshaft insertion hole of the partition plate 114. In addition, as shown in FIG. 9, the pair of V-shaped clampers 304 so that the dividing surface 130 c of the first partition plate 130 and the dividing surface 131 c of the second partition plate 131 are perpendicular to the driving direction of the clamper driving mechanism 302. Set to. Further, the positioning pins 303 are fitted into the three bolt holes of the first partition plate 130 and the second partition plate 131. The state at this time is shown in FIG.
In STEP 24, the second roller 119 and the second cylinder 115 on which the second vane 118 is set are inserted into the crankshaft 108, and the second cylinder 115 is installed on the first partition plate 130 and the second partition plate 131.
In STEP 25, the frame holding mechanism 305 holds the second frame 116 having the second bearing 116a.
In STEP 26, one V-shaped clamper 304 is advanced by the clamper driving mechanism 302 and brought into contact with one of the first partition plate 130 or the second partition plate 131.
In STEP 27, the other V-shaped clamper 304 is advanced by the clamper driving mechanism 302 and pressed against the other of the first partition plate 130 or the second partition plate 131.
In STEP 28, the position of the second frame 116 having the second bearing 116a is adjusted by the shaft center adjusting mechanism 306 so that the first bearing 109a and the second bearing 116a are coaxial.
In STEP 29, the second frame 116 having the second bearing 116 a is installed on the second cylinder 115.
In STEP 30, the bolt fastening mechanism 307 fastens the second frame 116 having the second bearing 116a, the second cylinder 115, the first and second partition plates 130 and 131, and the first cylinder 110 with bolts. The state at this time is shown in FIG.
In STEP 31, the V-shaped clamper 304 is moved backward by the clamper driving mechanism 302.
By using the above manufacturing method and manufacturing apparatus, even if the partition plate 114 is divided into a plurality of parts (first partition plate 130 and second partition plate 131), the sub-assembly of fastening the divided partition plate 114 is performed. The compression mechanism 103 can be assembled without any additional work.

During the operation of the compressor, various forces are applied to the compression mechanism 103 and a pressure difference of the refrigerant is generated. Therefore, the compression mechanism 103 is required to have a robust structure and airtightness. The pressure acting on the partition plate 114 during operation of the compressor is as follows. That is, the discharge pressure (high pressure) acts on the inner and outer circumferences of the shaft through hole of the partition plate 114, and the discharge pressure (high pressure) is changed from the suction pressure (low pressure) to the upper and lower end surfaces of the partition plate 114 according to the phase of the eccentric portion of the crankshaft 108. ) Pressure will work. The crankshaft 108 is eccentric with the first eccentric portion 122 and the second eccentric portion 124 being 180 degrees out of phase. Therefore, for example, as shown in FIG. 13, when the first eccentric portion 122 is in the direction of about 90 degrees from the first vane 112, the pressure of the low pressure chamber 128 of the first compression chamber 126 is p11, and the pressure of the high pressure chamber 129 is p12. In this case, the second eccentric portion 124 is 270 degrees from the second vane 118, and when the pressure of the low pressure chamber 128 is p21 and the pressure of the high pressure chamber 129 is p22, the pressures p11, p12, p21, and p22 have the following relationship: Equation (1) is satisfied.
p11 = p21 <p12 <p22 (1)
Therefore, in the region of 0 to 90 degrees from the vanes 112 and 118, the pressure is equal on the upper and lower end surfaces of the partition plate 114 (p11 = p21), and in the region of 90 to 270 degrees from the vanes 112 and 118, the pressure acts on the upper end surface of the partition plate 114. The pressure is larger than the pressure acting on the lower end surface (p12> p21), and the pressure acting on the upper end surface of the partition plate 114 is smaller than the pressure acting on the lower end surface in the region of vanes 112, 118 to 270 to 360 degrees (p12 <p22). Since the pressure difference is generated between the upper and lower end surfaces of the partition plate 114 in this way, the deformation occurs so as to be shifted at the joint portion between the first partition plate 130 and the second partition plate 131, and the refrigerant leaks from a slight gap. there is a possibility.

  In the manufacturing method and the manufacturing apparatus of the rotary compressor according to the present embodiment, not only the vertical tightening force (crankshaft axis direction) by bolt fastening but also the horizontal direction by the V-shaped clamper 304 ( The above problem is solved by applying a pressing force in the direction of the crankshaft axis. When a horizontal clamping force is applied to the first partition plate 130 and the second partition plate 131 by the V-shaped clamper 304, the split surface 130c of the first partition plate 130 and the split surface 131c of the second partition plate 131 come into contact with each other. Glide on the contact surface. Then, as shown in FIG. 14, the second partition plate 131 is shifted upward with respect to the first partition plate 130. After that, the second cylinder 115 is brought into contact with the first partition plate 130 and the second partition plate 131 from above and bolt fastening is performed, so that the first partition plate 130 and the second partition plate 131 are vertically tightened. Occurs. Then, by adjusting the vertical bolt tightening force and the horizontal V-shaped clamper pressing force, the second partition plate 131 slides downward, and the upper end surfaces of the first partition plate 130 and the second partition plate 131 And the lower end surface are fixed in a state where they are aligned on the same plane.

  As described above, according to the present embodiment, the first partition plate 130 and the second partition plate 131 are in contact with each other without any gap and are fixed while pressed against each other. Even if there is a pressure difference between the upper and lower end surfaces of 131, there is little leakage of the refrigerant, and deformation can be suppressed because the frictional force acts on the mutual contact surfaces. In addition, the force acting on the partition plate when the compressor is stopped and during operation is mainly due to the pressure difference between the upper and lower end surfaces of the partition plate, sliding between the roller and the partition plate, vibration during operation, etc. However, these forces do not act in the direction of positively separating the first partition plate and the second partition plate, and the partition plate divided by the friction force generated between the cylinder and the partition plate by bolt fastening is released. There is no.

  As described above, since the compression mechanism can be assembled without sub-assembling the partition plate composed of a plurality of parts, the number of parts and the number of man-hours can be reduced. Further, since the compression mechanism portion can be assembled in a state where the gaps between the components of the compression mechanism portion are small, the leakage of the medium is reduced, and an efficient compressor can be manufactured.

  The present invention can be applied to a multi-cylinder rotary compressor, a manufacturing method thereof, and a manufacturing apparatus thereof.

100 rotary compressor, 101 shell, 102 motor, 103 compression mechanism,
108 crankshaft, 109 first bearing, 110 first cylinder,
111 first spring, 112 first vane, 113 first roller, 114 partition plate,
115 second cylinder, 116 second bearing, 117 second spring, 118 second vane,
119 Second roller, 126 First compression chamber, 127 Second compression chamber, 130 First partition plate,
131 2nd partition plate, 200 fixed jig, 300 assembly device, 301 base,
302 clamper drive mechanism, 303 positioning pin, 304 V-shaped clamper,
305 Frame gripping mechanism, 306 shaft center adjusting mechanism, 307 bolt fastening mechanism.

Claims (8)

A sealed container is provided with a motor and a compression mechanism, and the compression mechanism is driven by the motor and has a plurality of eccentric parts. A plurality of cylinders forming a compression chamber between the outer periphery of the eccentric part and the inner peripheral part thereof, and the crankshaft bearings installed at both ends in the crankshaft axial direction with the plurality of cylinders interposed therebetween A first and second frame body having a partition plate that partitions the plurality of cylinders and has a crankshaft insertion hole;
A rotary compressor in which the partition plate is divided into a plurality of parts, and a dividing surface of the partition plate is a flat surface that extends over the crankshaft insertion hole and is inclined obliquely from the crankshaft shaft. The rotary compressor according to claim 1, wherein the plurality of cylinders, the first and second frame bodies, and the partition plate are bolted. A sealed container is provided with a motor and a compression mechanism, and the compression mechanism is driven by the motor and has a plurality of eccentric parts. A plurality of cylinders forming a compression chamber between the outer periphery of the eccentric part and the inner peripheral part thereof, and the crankshaft bearings installed at both ends in the crankshaft axial direction with the plurality of cylinders interposed therebetween A first and second frame body having a partition plate between the plurality of cylinders and a partition plate having a crankshaft insertion hole,
A step of arranging a partition plate having a plane which is divided into a plurality of cylinders and whose dividing surface extends over the crankshaft insertion hole and which is inclined obliquely from the crankshaft axis;
Pressing the partition plate divided into a plurality in the axial direction of the crankshaft shaft;
The manufacturing method of the rotary compressor provided with the process of fastening the said some cylinder, the said 1st and 2nd frame, and the said partition plate. The manufacturing method of the rotary compressor of Claim 3 provided with the process of adjusting the axial center of the crankshaft bearing of the said 1st and 2nd frame. The manufacturing method of the rotary compressor of Claim 3 which finishes simultaneously the upper-lower-end surface of the said partition plate divided | segmented into plurality when finishing the plate | board thickness dimension of the said partition plate. The partition plate includes a first partition plate and a second partition plate. When finishing the split surfaces of the first and second partition plates, the upper end surface of the first partition plate, the lower end surface of the second partition plate, and the first The dividing surfaces of the first partition plate and the second partition plate in a state where the directions of the first partition plate and the second partition plate are aligned so that the lower end surface of the partition plate and the upper end surface of the second partition plate are respectively in the same plane. When the partition plate is assembled, the upper end surface of the first partition plate and the upper end surface of the second partition plate, and the lower end surface of the first partition plate and the lower end surface of the second partition plate are in the same plane. The method of manufacturing a rotary compressor according to claim 3, wherein the rotary compressor is assembled in such a direction that both divided surfaces are in contact with each other. A crankshaft having a plurality of eccentric parts, a plurality of cylinders arranged corresponding to the plurality of eccentric parts and forming a compression chamber between an outer periphery of the eccentric part and an inner peripheral part thereof, The first and second frames are installed at both ends of the crankshaft in the axial direction with a plurality of cylinders sandwiched therebetween, and have bearings for the crankshaft, and the crankshaft insertion holes are partitioned between the plurality of cylinders. A rotary compressor manufacturing apparatus including a compression mechanism provided with a partition plate,
A base for installing and positioning the compression mechanism section, and a partition plate that is divided into a plurality of parts and has a plane that is inclined with respect to the crankshaft shaft while the divided surface straddles the insertion hole of the crankshaft shaft. An apparatus for manufacturing a rotary compressor, comprising: a pressing mechanism that presses in the axial direction of a shaft; and a fastening mechanism that fastens the plurality of cylinders, the first and second frame bodies, and the partition plate. The rotary compressor manufacturing apparatus according to claim 7, further comprising an axis adjustment mechanism that adjusts an axis of a crankshaft bearing of the first and second frame bodies.

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