CN101307762A - Rotary compressor - Google Patents

Abstract

The invention discloses a rotary type compressor. The top and the bottom of a cylinder are respectively provided with a bearing; and a structure of a central part of the bearing is a protrudent projection. The end part of the projection protrudes a lug boss; the cross section area of the lug boss is less than that of the projection; the outer edge of the lug boss is provided with screw threads; through the screw threads, a nut and the lug boss are screwed together; a muffler is pressed down in order that the muffler and the bearings are combined into a whole; the diameter of a center hole of the muffler is less than the diameter of the projection and more than the diameter of the lug boss; a contact part between the muffler and the nut slightly sinks inside; the lug boss and the screw threads are made by turning and machining; the edge part of the bearing is provided with an inverted angle and is brushed with a ring of adhesive; and a contact part between the muffler and the bearing edge is slightly larger. The rotary type compressor cancels a threaded hole, reduces machining procedures, improves the sealing performance and reduces the workload in the production process.

Description

Rotary compressor

Technical field

The present invention relates to a kind of rotary compressor, especially provide a kind of baffler and bearing close-connected rotary compressor.

Background technique

The rotary compressor of prior art is the compressor that can suck, compress and discharge refrigerant in the vaporizer continuously, and it is to abate the noise that the baffler of rotary compressor closely is connected with bearing, improves the key link of compressor quality.

The body of rotary compressor by shell and respectively closed its loam cake and the lower cover in space are formed up and down, stator and rotor are installed in the body of rotary compressor, rotor combines with the bent axle that passes its centre, the lower end of bent axle and the eccentric part of cylinder interior form one, bent axle drive eccentric part rotates in cylinder interior like this, for closed cylinder, upper bearing (metal) and lower bearing have been formed in cylinder interior, when cylinder when being a plurality of, also be provided with middle (center) bearing between cylinder, in order to reduce the noise that refrigerant rolls, on upper bearing (metal) top baffler has been installed, and bottom silencer has been installed in the lower bearing bottom.

As depicted in figs. 1 and 2, with lower bearing 4 is example, lower bearing 4 cores form outstanding projection 22 downwards, the hollow part in projection 22 center portions is bearing holes 21, lower bearing 4 submarginal parts are provided with bolt hole 26, fixed component passes bottom silencer, and is fixed on the bolt hole 26, thereby bottom silencer and lower bearing 4 are connected as one.

There is following defective in the rotary compressor of prior art:

At first, need with two above bolts baffler to be connected with bearing, the mounting process more complicated also is easy to generate error.

Secondly, baffler produces distortion to bearing protruding part pressure, and this position may produce leakage problem.

Above defective both can influence the sealing of baffler, was unfavorable for reducing noise again.

Summary of the invention

Technical problem to be solved by this invention is to provide a kind of installation simple and easy accurately, tight-closed, the rotary compressor of reduction noise.

In order to solve the problems of the technologies described above, the technical solution used in the present invention is:

As a kind of rotary compressor of the present invention, bearing has been formed on the top and the bottom of the cylinder of rotary compressor, Bearing Installation baffler, bearing centre has partly formed outstanding projection, the outstanding boss that forms in this protruding end, the cross-section area of boss is less than projection, the boss outer ledge is provided with screw thread, and by screw thread, nut and boss are screwed in together, push down baffler, baffler and bearing are combined as a whole.

And the diameter of the mesopore of baffler is less than the diameter of projection, and greater than the diameter of boss, baffler and nut contact segment concave slightly.

And boss and screw thread are processed into by turning.

And the bearing edge section is provided with chamfering, and baffler is bigger slightly than other parts with bearing EDGE CONTACT part.

In addition, the chamfered part at bearing edge is brushed with a circle glue.

The invention has the beneficial effects as follows:

The tapped hole that is used to connect baffler on the rotary compressor cancellation bearing of the present invention.Reduce manufacturing procedure, improved sealed type, reduced workload in the production process.

Description of drawings

Fig. 1 is the compressor arrangement schematic representation

Fig. 2 is the worm's eye view and the A-A sectional view thereof of prior art lower bearing

Fig. 3 is the stereogram of prior art lower bearing

Fig. 4 is the worm's eye view and the sectional view of lower bearing of the present invention

Fig. 5 is the stereogram of lower bearing of the present invention

Fig. 6 is the assembly flow charts of lower bearing of the present invention and baffler

Fig. 7 is the erection drawing of lower bearing of the present invention and baffler

Among the figure:

1: shell 2: lower cover

3: go up silencing apparatus 3a: following silencing apparatus

4: lower bearing 5: eccentric part

6: middle (center) bearing 7: cylinder

8: upper bearing (metal) 9: stator

10: rotor 11: bolt hole

12: bent axle 13: loam cake

14: outlet pipe 15: overload protective device

21: bearing hole 22: projection

23: boss 24: screw thread

25: nut 26: bolt hole

Embodiment

Below in conjunction with the drawings and specific embodiments a kind of rotary compressor of the present invention is described in further detail:

As shown in Figure 1, the body of rotary compressor by shell 1 and closed respectively its loam cake 13 and the lower cover 2 in space are formed up and down, outlet pipe 14 also is being set on the loam cake 13, stator 9 and rotor 10 are installed in the body of rotary compressor, rotor 10 combines with the bent axle 12 that passes its centre, the eccentric part 5 of the lower end of bent axle 12 and cylinder 7 inside forms one, bent axle 12 drives eccentric part 5 in cylinder 7 inner rotations like this, for closed cylinder 7, formed upper bearing (metal) 8 at cylinder 7 tops, form lower bearing 4 in cylinder 7 bottoms, on the lower bearing 4 air vent is set, when cylinder 7 when being a plurality of, also be provided with middle (center) bearing 6 between the cylinder 7, in order to reduce the noise that refrigerant rolls, on upper bearing (metal) 8 tops baffler 3 has been installed, and in lower bearing 4 bottoms bottom silencer 3 has been installed, upper bearing (metal) 8, last silencing apparatus 3, lower bearing 4, following silencing apparatus 3a, cylinder 7, middle (center) bearing 6 connects as one by bolt hole 11 construction bolts.

As shown in Figure 4, with lower bearing 4 is example, lower bearing 4 cores form outstanding projection 22 downwards, the outstanding boss 23 that forms in the end of projection 22, the cross-section area of boss 23 is less than projection 22, and the hollow part in the center portion of projection 22 and boss 23 is bearing holes 21, and guiding gutter also is being set in the bearing hole 21, as shown in Figure 5, boss 23 outer ledges are provided with screw thread 24.

As shown in Figure 6 and Figure 7, the diameter of the mesopore of bottom silencer 3a is less than projection 22 diameter, and greater than the diameter of boss 23, bottom silencer 3a and nut 25 contact segments concave slightly, make installation simpler and easy, firm.The installation process of bottom silencer 3a is: earlier bottom silencer 3a is covered lower bearing 4, allow boss 23 in the mesopore of bottom silencer 3a, expose again, allow bottom silencer 3a closely contact then with lower bearing 4, at last nut 25 is screwed on the boss 23, push down bottom silencer 3a, bottom silencer 3a and lower bearing 4 are combined as a whole, thereby bottom silencer 3a and lower bearing 4 are being connected as one.

Above-mentioned boss 23 and screw thread 24 are processed into by turning.

For bottom silencer 3a and lower bearing 4 are connected as one more hermetically, lower bearing 4 edge sections are provided with chamfering, and bottom silencer 3a is bigger slightly than other parts with lower bearing 4 EDGE CONTACT part.

And the chamfered part at lower bearing 4 edges is brushed with a circle glue.

The present invention is equally applicable between upper bearing (metal) 8 and the last baffler 3.

Rotary compressor of the present invention adds a little boss again with bearing center protrusion end, and machining screw, is used to connect the tapped hole of baffler on the cancellation bearing.Reduce manufacturing procedure, also improved sealed type, reduced workload in the production process.

Claims (5)

1, a kind of rotary compressor, bearing has been formed on the top and the bottom of the cylinder of rotary compressor, Bearing Installation baffler, bearing centre has partly formed outstanding projection, it is characterized in that: the outstanding boss (23) that forms in the end of described projection (22), the cross-section area of boss (23) is less than projection (22), boss (23) outer ledge is provided with screw thread (24), by screw thread (24), nut (25) and boss (23) are screwed in together, push down baffler (3,3a), baffler (3,3a) and bearing (4,8) are combined as a whole.

2, rotary compressor according to claim 1, it is characterized in that: the diameter of the mesopore of described baffler (3,3a) is less than the diameter of projection (22), and greater than the diameter of boss (23), baffler (3,3a) and nut (25) contact segment concave slightly.

3, rotary compressor according to claim 2 is characterized in that: described boss (23) and screw thread (24) are processed into by turning.

4, according to the described rotary compressor of claim 1 to 3, it is characterized in that: described bearing (4,8) edge section is provided with chamfering, and baffler (3,3a) is bigger slightly than other parts with bearing (4,8) EDGE CONTACT part.

5, rotary compressor according to claim 4 is characterized in that: the chamfered part at described bearing (4,8) edge is brushed with a circle glue.

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