JP2005188521A - Manufacturing method of compressor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily mount a rotor of an electric mechanism part on a rotation axis even at a place out of a regular manufacturing line. <P>SOLUTION: This rotating type compressor 100 is furnished with a rotating type compression mechanism part C and the electric mechanism part M to give torque to the compression mechanism part C through the rotation axis 4 and is devised to provide a cutout 20D on an outer peripheral part of a rotor upper end plate type member 20 on which a disc 17 for oil separation is installed and to install the whole of the rotor 3 on the rotation axis 4 by heating the rotor 3 integrated by fastening it by a connection fixing means 21 up to specified temperature, thereafter hanging it up by an assembly jig 31 by hooking a pair of hooks 30 on the outer peripheral part on which the cutout 20D is provided of the rotor upper end plate type member 20, carrying it onto the rotation axis 4, lowering the smaller cutout 20D toward the side of a cutout 4B of the rotation axis 4 and shrink-fitting a large number of laminated revolving core type plates 3A on the rotation axis 4. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a method for manufacturing a compressor for compressing a refrigerant.

As this type of compressor, for example, an internal high-pressure rotary compressor (hereinafter simply referred to as a compressor) 100X shown in FIGS. 6 and 7 is well known. In the compressor 100X, an electric mechanism part M including a stator 2, a rotor 3 and the like is provided in the upper part of the hermetic container 1, and the lower part is connected to the lower part of the electric mechanism part M via the rotor 3 and the rotary shaft 4. A compression mechanism C is provided. (See Patent Document 1)
The compression mechanism C includes a compression chamber 8 surrounded by a cylinder 5, an upper bearing 6 and a lower bearing 7 sealing both ends thereof, and a rotating shaft 4 supported by the upper bearing 6 and the lower bearing 7. A cylindrical roller 9 that is provided in the eccentric portion 4A by fitting, loose fitting, etc., and rotates eccentrically by the rotation of the rotating shaft 4, and reciprocates following the eccentric rotation of the roller 9 in contact with the outer periphery of the roller 9 It is composed of a vane 10 that moves and divides the compression chamber 8 into a low pressure portion 8L and a high pressure portion 8H, and compresses a gaseous refrigerant introduced through an accumulator (not shown) in the high pressure portion 8H of the compression chamber 8, A high-pressure refrigerant jetted into an intermediate portion between the compression mechanism portion C and the electric mechanism portion M of the hermetic container 1 through the induction pipe 12 connected to the refrigerant jet port 11 and jetted into the internal space of the hermetic container 1 is provided in the upper part. An air conditioner (not shown) that discharges from the discharge port 13 And supplies the high-pressure refrigerant in the refrigerant circuit.

  On the other hand, the electric mechanism M installed in the upper part of the sealed container 1 includes a stator 2 fixed to the upper inner side of the sealed container 1 and a rotor 3 that rotates by a rotating magnetic field formed by the stator 2. The upper pressing member 14 disposed on the upper side of the rotating iron core plate of the rotor 3 and the lower pressing member 15 disposed on the lower side are provided.

  The presser members 14 and 15 are each provided with a mass balance member 16 at an appropriate position to provide a mass balance with the rotary shaft 4 that eccentrically rotates the roller 9 with the eccentric portion 4A at the lower end portion. I try to suppress vibration.

  Reference numeral 17 denotes a disk for oil separation, which is attached to the rotary shaft 4 via a support bar 18. Further, a refrigerating machine oil 19 is stored in the lower part of the sealed container 1, and the refrigerating machine oil 19 is pumped up to improve the lubrication and airtightness of the sliding portion of the compression mechanism C.

  Then, the oil separation disk 17 is rotated at a high speed by the rotation of the rotor 3, whereby the compression mechanism C is compressed, and the compression mechanism C and the electric mechanism M of the sealed container 1 are connected via the guide tube 12. The refrigerant vapor that touches the disk 17 that rotates at a high speed in the process of being discharged from the discharge port 13 provided at the upper part of the sealed container 1 and the mist of the refrigerating machine oil contained in the refrigerant vapor is It is bounced away by centrifugal force.

At that time, a stronger force acts on the mist of the refrigerating machine oil having a high density and the momentum is also large, so that the mist of the refrigerating machine oil contained in the refrigerant vapor does not decelerate, and the coil and the sealed container of the electric mechanism unit M are not decelerated. The mist of the refrigerating machine oil condenses and dripped downwards by violently colliding with the inner wall of 1 and greatly reducing the speed.
JP 2000-230484 A

  In the rotary compressor having the above-described configuration, the rotor of the electric mechanism unit placed in an inverted state is expanded by heating to a predetermined temperature, and a sealed body is formed in a rotary shaft hole provided in the rotor. In the other method (for example, other production lines), the rotor is fixed to the rotary shaft by inserting the rotary shaft of the compression mechanism fixed to the inside of the container body. There has been a problem that it is difficult to fix the rotor by shrinkage fitting, and there has been a need for a solution.

In order to solve the above-described problems of the prior art, the present invention provides a compression mechanism that compresses and discharges a gas taken in from outside, and an electric mechanism that applies rotational power to the compression mechanism. This electric mechanism is provided in a sealed container, and the electric mechanism section is fixed to the sealed container, a rotor to which rotational force is applied by a rotating magnetic field formed by the stator, and attached to the upper side of the rotor and rotated together with the rotor. A notch is provided on the outer peripheral portion of the rotor upper end plate member to which the oil separating disc is attached.
On the rotation shaft of the compression mechanism fixed to the inner side of the container body forming the sealed container, the rotor upper end plate member is positioned with reference to the notch provided on the outer periphery thereof, and the rotor main body is shrink-fitted, The rotor of the electric mechanism unit is fixed to the rotating shaft.

  According to the second aspect of the present invention, the suspended rotor is lowered by engaging the suspension support means with the notch provided in the outer peripheral portion of the rotor upper end plate-like member, and the inner side of the container body forming the sealed container The rotor main body portion is shrink-fitted on the rotation shaft of the compression mechanism portion fixed to the rotor, and the rotor of the electric mechanism portion is fixed to the rotation shaft.

As described above, according to the present invention, in the compressor configured to be provided with the oil separation disc horizontally, a notch is provided in the outer peripheral portion of the rotor upper plate member to which the oil separation disc is attached. And a compressor that
The rotor main body is shrink-fitted by positioning the rotor upper end plate-like member on the rotation shaft of the compression mechanism fixed to the inside of the container body forming the hermetic container with reference to the notch provided on the outer periphery thereof. A compressor manufacturing method in which a rotor of a mechanism unit is fixed to a rotating shaft, and a rotor that is suspended by engaging a suspension support means with a notch provided on an outer peripheral portion of a rotor upper end plate-like member Manufacture of a compressor in which the rotor body portion is shrink-fitted on the rotation shaft of the compression mechanism portion fixed to the inside of the container body portion forming the hermetic container, and the rotor of the electric mechanism portion is fixed to the rotation shaft. Because the method
The notch provided on the outer peripheral part of the rotor upper end plate-like member can be positioned as a mark so that the rotor can be shrink-fitted and fixed to the rotating shaft, or the rotor upper end plate-like member provided with the notch The rotor can be easily suspended and transported by hooking. For this reason, the rotor of the electric mechanism portion can be easily attached to the rotating shaft assembled to the compression mechanism portion even at a place off the dedicated production line.

  Hereinafter, an embodiment of the present invention will be described in detail mainly with reference to FIGS. In order to facilitate understanding, in these drawings, the same reference numerals are given to the portions having the same functions as the portions described in the drawings.

  In the compressor 100 of the present invention, for example, as shown in FIG. 1, a large number of laminated rotary iron core plates 3 </ b> A constituting the rotor 3, an upper pressing member 14 thereon, and a lower lower portion (not shown). The side presser member 15, the plate-like mass balance member 16 on the upper presser member 14, and the rotor upper end plate-like member 20 on the upper presser member 14 are tightened and integrated by a bolt-like connecting and fixing means 21, and further oil separation is performed. A circular plate 17 is attached to the rotor upper end plate member 20 by a blind rivet 22.

  The mass balance member 16 of the compressor 100 is a plate-like balance member that is symmetric with respect to the X axis and asymmetric with respect to the Y axis, as shown in FIG. The left part of the drawing having a large mass is placed in a predetermined direction, for example, two in a predetermined direction, that is, on the eccentric part 4A side so that the mass balance with the eccentric part 4A can be obtained.

  The mass balance member 16 is provided with one relatively large hole 16A centered at the intersection of the X axis and the Y axis, and further has a hole 16B through which the connection fixing means 21 is inserted. Four are provided.

  In the center of the rotor upper plate member 20, one hole 20A having the same size as the hole 16A of the mass balance member 16 is provided as shown in FIG. The four holes 20 </ b> B are provided at the same coordinate position as the holes 16 </ b> B of the mass balance member 16.

  The rotor upper end plate-like member 20 is provided with two rivet holes 20C on the X axis. The two rivet holes 20C are arranged on the Y-axis at a position where the X-axis and the Y-axis coincide with each other and the rotor upper end plate-like member 20 is overlapped with the mass balance member 16 so as to be disengaged outwardly from the mass balance member 16. It is provided in a symmetrical part.

  Furthermore, notches 20D are provided in the outer peripheral portion in the diameter direction of the rotor upper end plate-like member 20, in this case, the outer peripheral portions at two left and right positions on the X axis. The two notches 20D are formed in different sizes.

  The oil separating disc 17 is provided with two rivet holes 17A at the same coordinate position as the rivet hole 20C of the rotor upper end plate member 20 as shown in FIG.

  One of the two rivet holes 17A, for example, the rivet hole 17A on the left side of the drawing is provided with the same size as the rivet hole 20C of the rotor top plate member 20, and the other rivet hole 17A, ie, the rivet hole 17A on the right side of the drawing is It is slightly larger, for example, about 1.5 to 4 mm in diameter. Further, a notch 17C is provided on the outer peripheral portion on the small diameter rivet hole 17A side.

  The portion of the disc 17 where the rivet hole 17A is provided projects locally downward, and the rivet hole 17A is provided at the center of each downward projection 17B. The downward projecting amount of the downward projecting portion 17B of the disc 17 is slightly larger than the height of the head portion 21A of the connection fixing means 21.

  The oil separating disc 17 is attached to the rotor upper end plate member 20 by using a blind rivet 22, for example, as shown in FIG. That is, the rivet hole 20C is aligned with the small-diameter rivet hole 17A, that is, the rivet hole 17A on the side where the notch 17C is provided, and the disc 17 is overlaid on the rotor upper end plate member 20, and from above the blind rivet 22 The distal end 22A is sequentially inserted into the small-diameter rivet hole 17A and the rivet hole 20C of the rotor upper end plate member 20, and in this state, the other rivet holes 17A and 20C are made to coincide with each other. 22 is inserted through the distal end side 22A.

  Then, by pulling the shaft portion 22B of the blind rivet 22 upward using a dedicated jig (not shown), the cylindrical tip portion 22C expands in a bowl shape, and pulls the existing hand side hook-like portion 22D and the shaft portion 22B. The disc 17 for oil separation and the rotor upper end plate-like member 20 are fastened and integrated by the front end side flange 22E formed by the operation. Note that the shaft portion 22B is automatically cut by the jig portion 22D on the proximal side.

  In the compressor 100 of the present invention configured as described above, a large number of laminated rotary iron core plates 3A, an upper pressing member 14 thereon, a lower pressing member 15 below, and a plate above the upper pressing member 14 are arranged. After the rotor 3 in which the cylindrical mass balance member 16 and the rotor upper plate member 20 on the upper portion thereof are fastened and integrated with a bolt-like connecting and fixing means 21 is heated to a predetermined temperature, for example, as shown in FIG. A compression mechanism fixed to the inside of the body for forming the hermetic container 1 by hanging a pair of hooks 30 on the outer peripheral portion of the rotor upper end plate-like member 20 where the notch 20D is provided and lifting it with an assembly jig 31. It is transported onto the rotating shaft 4 assembled to the part C, the smaller notch 20D is lowered toward the notch 4B side of the rotating shaft 4, and a large number of laminated rotating core plates 3A are attached to the rotating shaft 4. Shrink fit, low 3 whole is attached to the rotating shaft 4.

  Therefore, the notch 20D provided on the outer peripheral portion of the rotor upper end plate member 20 can be positioned as a mark so that the rotor 3 can be shrink-fitted and fixed to the rotary shaft 4, and the rotor upper end provided with the notch 20D. The rotor 30 can be easily suspended and transported by hooking the hook 30 on the outer peripheral portion of the plate-like member 20.

  The oil separation disc 17 can be attached to the rotor upper end plate member 20 by an extremely simple operation of inserting the blind rivet 22 into the rivet holes 17A and 20C and pulling the shaft portion 22B of the blind rivet 22. Yes.

  In addition, the blind rivet 22 is first inserted into the rivet hole 20C of the rotor upper plate member 20 with the small-diameter rivet hole 17A of the disc 17 and then the other rivet holes 17A and 20C are made to coincide with each other to blind. By inserting the rivet 22 and integrating them, even if the position of the rivet hole 17A of the disc 17 and the rivet hole 20C of the rotor upper end plate member 20 are slightly shifted, the rotor upper end plate member 20 is used for oil separation. The disc 17 can be securely attached.

  Further, since the rivet hole 17A of the oil separating disc 17 is provided in the downward projecting portion 17B, the oil separating disc 17 is formed by the proximal side flange portion 22D and the distal end side flange portion 2E of the blind rivet 22. When the upper plate member 20 and the rotor upper plate member 20 are fastened and integrated, the head portion 21A of the connection fixing means 21 interferes and the disk 17 is not deformed.

  In addition, the oil separation disc 17 is attached using a low-cost blind rivet that is small in size and mass, without using special rivets, etc., thus reducing component costs. In addition, the required input of the electric mechanism M can be reduced.

  In addition, since this invention is not limited to the said embodiment, various deformation | transformation implementation is possible in the range which does not deviate from the meaning as described in a claim.

  For example, the rotor 3 may be shrink-fitted onto the rotating shaft 4 after the oil separation disc 17 is attached to the rotor upper end plate member 20.

  Further, the high-pressure refrigerant vapor compressed by the compression mechanism C may be directly ejected into the sealed container 1 and discharged from the discharge port 13 provided in the upper part of the sealed container 1.

  Furthermore, as the compressor 100, for example, as shown in FIG. 8, a two-cylinder type compressor may be used.

It is explanatory drawing which shows the principal part of the rotary compressor of this invention. It is explanatory drawing which shows the manufacturing method of the rotary compressor of this invention. It is explanatory drawing of the components used for the rotary compressor of FIG. 1, (A) is explanatory drawing of a mass balance member, (B) is explanatory drawing of a rotor upper end plate member, (C) is an oil separation disc. It is explanatory drawing of. It is explanatory drawing which looked at the rotor from the upper direction. It is explanatory drawing which shows the attachment point of the disc for oil separation. It is explanatory drawing which shows the structure of the conventional rotary compressor. It is an AA arrow line view in FIG. It is explanatory drawing of a 2 cylinder type rotary compressor.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sealed container 2 Stator 3 Rotor 3A Rotating iron core plate 4 Rotating shaft 4A Eccentric part 5 Cylinder 6 Upper bearing 7 Lower bearing 8 Compression chamber 8H High pressure part 8L Low pressure part 9 Roller 10 Vane 11 Refrigerant jet 12 Guidance pipe 13 Discharge port 14 Upper side Presser member 15 Lower presser member 16 Mass balance member 16A, 16B Hole 17 (for oil separation) Disc 17A Rivet hole 17B Lower projection 17C Notch 18 Support rod 19 Refrigerating machine oil 20 Rotor upper end plate member 20A, 20B Hole 20C Rivet hole 20D Notch 21 Connection fixing means 21A Head 22 Blind rivet 22A Tip side 22B Shaft 22C Cylindrical tip 22D Hand side hook 22E Tip side hook 30 Hook 31 Assembly jig 100, 100X Rotary compression Machine C Compression mechanism part M Electric mechanism part X, Y axis

Claims (2)

A compression mechanism portion that compresses and discharges gas taken in from the outside, and an electric mechanism portion that imparts rotational power to the compression mechanism portion is provided in the sealed container, and the electric mechanism portion is a stator fixed to the sealed container; The rotor includes a rotor to which a rotational force is applied by a rotating magnetic field formed by the stator, and an oil separation disk that is attached to the upper side of the rotor and rotates together with the rotor. The oil separation disk is attached to the rotor. A notch is provided in the outer peripheral portion of the rotor upper end plate-shaped member,
On the rotation shaft of the compression mechanism fixed to the inner side of the container body forming the sealed container, the rotor upper end plate member is positioned with reference to the notch provided on the outer periphery thereof, and the rotor main body is shrink-fitted, A method of manufacturing a compressor, comprising fixing a rotor of an electric mechanism section to a rotating shaft. Rotation of the compression mechanism fixed to the inside of the container body forming the sealed container by lowering the suspended rotor by engaging the suspension support means with the notch provided on the outer peripheral part of the rotor upper plate member 2. The method of manufacturing a compressor according to claim 1, wherein the rotor main body is shrink fitted on the shaft, and the rotor of the electric mechanism portion is fixed to the rotating shaft.