CN101994696A

CN101994696A - Spring-free rotary compressor

Info

Publication number: CN101994696A
Application number: CN200910070215XA
Authority: CN
Inventors: 刘斌
Original assignee: LG Electronics Tianjin Appliances Co Ltd
Current assignee: LG Electronics Tianjin Appliances Co Ltd
Priority date: 2009-08-24
Filing date: 2009-08-24
Publication date: 2011-03-30

Abstract

The invention discloses a spring-free rotary compressor, which comprises a shell, wherein the shell comprises a barrel, an upper cover, a lower cover and the like; a motor assembly and a compressor assembly are arranged inside the shell; the motor assembly comprises a stator, a rotor, a crankshaft and the like; the compressor assembly comprises a cylinder, an upper bearing, a lower bearing and the like; a piston is arranged inside the cylinder; a baffle groove is formed on one side of the interior of the cylinder; a baffle is arranged inside the baffle groove; the baffle is a cuboid with a certain thickness; and a permanent magnet is embedded inside one end of the baffle. By canceling a spring on a side end part of the baffle and embedding the permanent magnet inside one end of the baffle, when the compressor operates and the piston rotates, the baffle is driven to reciprocate, the piston is not subjected to extra pressure, and the efficiency is improved. Meanwhile, due to the absence of a one-way external force, the compressor operates steadily, and the noise and vibration are correspondingly reduced.

Description

No spring revolution type compressor

Technical field

The invention belongs to a kind of compressor, be specifically related to a kind of no spring revolution type compressor.

Background technique

As shown in Figure 1, 2, the rolling piston compressor of prior art, the upper inside that is included in housing 1 is equipped with electric machine assembly 20, at the downside of electric machine assembly 20 compressor assembly 30 that is equipped with separated by a distance.Housing 1 is made up of cylindrical drum 11, loam cake 12 and the lower cover 13 etc. of hollow.Electric machine assembly 20 is pressed on the inner peripheral surface that is fixed on cylindrical shell 11, and it is made up of stator 21, rotor 22 and rotary crankshaft 23 of being pressed into the center that is fixed on rotor 22 and transmitting rotating force etc.

Compressor assembly 30 comprises cylinder 31, upper bearing (metal) 32 and lower bearing 33, at the inner eccentric part 23a that forms rotary crankshaft 23 of the compression volume C of cylinder 31, in the outside of eccentric part 23a, being provided with can rotation and the rolling piston 35 of revolution by eccentric part 23a, side at piston 35 is provided with baffle plate 36, one end of baffle plate 36 contacts with the excircle upper thread of rolling piston 35, and be suction area and compressing area with the compression volume C zoning that the outer peripheral surface of the inner peripheral surface of cylinder 31 and rolling piston 35 forms, the other end of baffle plate 36 contacts with spring 37.The suction port (not shown) that also is communicated with the suction pipe in the suction area in the cylinder 31, and the exhaust port (not shown) that is used to discharge compressed media in the compressing area.

In addition, be provided with exhaust port (not shown) in the upper bearing (metal) 32, its upside binding is fixed with baffler 34, is used to reduce the noise that is produced by pressure difference from the compressed media gas of exhaust port discharge.Be provided with suction pipe 50 in the bottom of seal casinghousing 1, be discharged to seal casinghousing 1 outside, on loam cake 12, be provided with discharge tube 51, on loam cake 12, also be provided with the wiring terminal 52 that connects power line for making dielectric gas by baffler 34.

But, in the compressor of prior art, when compressor operating, baffle plate 36 is because of being subjected to the spring force effect of spring 37, pass to the certain pressure of piston 31, cause piston in rotary course except the power that is compressed cold media air, increased a kind of extra power again, cause the stressed load of piston to increase the weight of, fragile.In addition, piston is subjected to the pressure of baffle plate one side all the time, also causes bent axle 23 to be subjected to force unbalance when rotated, and input torque produces fluctuation, compressor operating instability.

Summary of the invention

The present invention is for the shortcoming that overcomes prior art proposes, and its objective is provides a kind of no spring revolution type compressor.

The technological scheme of invention is: a kind of no spring revolution type compressor, comprise housing, form by cylindrical shell, loam cake and lower cover, electric machine assembly is installed in housing at housing, be provided with compressor assembly below electric machine assembly, electric machine assembly is made up of stator, rotor and bent axle.Compressor assembly comprises cylinder, is provided with upper bearing (metal) above cylinder, is provided with lower bearing and is provided with piston in the inside of cylinder below cylinder, forms baffle plate groove in the inside of cylinder one side, is provided with baffle plate in baffle plate groove.The width of baffle plate groove greater than baffle plate thickness.

The profile of described baffle plate is to have a certain thickness cuboid, is inlaid with permanent magnet in the inside of an end of baffle plate.Described permanent magnet is a cuboid.

The magnetic intensity of permanent magnet is between 200～500 Gauss spies.

The width of baffle plate groove greater than baffle plate thickness.

The present invention adopts and is inlaid with permanent magnet in the inside at baffle plate one end owing to cancelled the spring of baffle plate one side end, when compressor operating, piston rotation, drives the baffle plate to-and-fro motion, and piston is not subjected to extra pressure, and efficient improves.Because of the effect of no unidirectional external force, compressor operating more becomes steadily again, noise, the also corresponding reduction of vibration.

Description of drawings

Fig. 1 is the longitudinal sectional drawing of compressor of the prior art;

Fig. 2 is the assembling schematic representation of cylinder, plate washer and spring in the prior art compressor;

Fig. 3 is the assembling schematic representation of cylinder, piston and plate washer in the compressor of the present invention;

Fig. 4 is the stereogram of baffle plate of the present invention.

Wherein:

1 housing, 11 cylindrical shells

12 loam cakes, 13 lower covers

20 electric machine assemblies, 21 stators

22 rotors, 23 bent axles

23a eccentric part 30 compressor assemblies

31 cylinders, 32 upper bearing (metal)s

33 lower bearings, 34 bafflers

35 pistons, 36 baffle plates

37 springs, 38 baffle plates

39 permanent magnets, 40 baffle plate grooves

50 suction pipes, 51 discharge tubes

52 power-line terminals

Embodiment

Below, with reference to drawings and Examples no spring revolution type compressor of the present invention is elaborated:

In the accompanying drawings, the present invention's component same as the prior art use identical label.

Shown in Fig. 1,3, a kind of no spring revolution type compressor comprises housing 1, in the upper inside of housing 1 electric machine assembly 20 is installed, at the downside of electric machine assembly 20 compressor assembly 30 that is equipped with separated by a distance.Housing 1 is made up of cylindrical drum 11, loam cake 12 and the lower cover 13 etc. of hollow.Electric machine assembly 20 is pressed on the inner peripheral surface that is fixed on cylindrical shell 11, and it is made up of stator 21, rotor 22 and rotary crankshaft 23 of being pressed into the center that is fixed on rotor 22 and transmitting rotating force etc.

Compressor assembly 30 is made up of piston 35, cylinder 31, upper bearing (metal) 32, lower bearing 33 and silencing apparatus 34, at the inner eccentric part 23a that forms rotary crankshaft 23 of the compression volume (C) of cylinder 31.In the outside of eccentric part 23a, being provided with can rotation and the rolling piston 35 of revolution by eccentric part 23a, side at piston 35 forms baffle plate groove 40, in baffle plate groove 40, be provided with baffle plate 38, one end of baffle plate 38 contacts with the excircle upper thread of rolling piston 35, and is suction area and compressing area with the compression volume C zoning that the outer peripheral surface of the inner peripheral surface of cylinder 31 and rolling piston 35 forms.The width of baffle plate groove 40 greater than baffle plate 38 thickness.

As shown in Figure 4, the profile of baffle plate 38 is one and has certain thickness cuboid, is inlaid with the permanent magnet 39 that profile is a cuboid in the inside of an end of baffle plate 38.

When compressor operating, the eccentric part of bent axle drives the rolling that piston carries out rotation and revolution, the off-centre rolling of piston 35 drives baffle plate 38 and do straight reciprocating motion in baffle plate groove 40, because the permanent magnet 39 in the baffle plate 38 produces the magnetic force adhesive with irony piston 35, make baffle plate 38 be inlaid with an end of permanent magnet 39 and the outer peripheral surface of piston 35 closely contacts, form the isolation of suction area and compressing area in the cylinder.Because the magnetic intensity of permanent magnet 39 is that the capacity according to compressor is big, the big appropriate design of size of piston, the size of adhesive magnetic force should make baffle plate both reach tight the contact with the outer peripheral surface of piston, can not make again that adhesive magnetic force is too strong, increase frictional force.

The magnetic intensity of permanent magnet 39 can be according to the tight adhesive of piston and do not attract each other with other adjacent component and decide for standard, the capacity of compressor is big, the size of piston is big, the magnetic intensity of permanent magnet is higher, the capacity of compressor is little, the size of piston is little, the magnetic intensity of permanent magnet is low, generally speaking, the magnetic intensity of permanent magnet is between 200～500 Gauss spies.

Claims

1. no spring revolution type compressor, comprise housing (1), at housing (1) by cylindrical shell (11), loam cake (12) and lower cover (13) are formed, electric machine assembly (20) is installed in housing (1), be provided with compressor assembly (30) in the below of electric machine assembly (20), electric machine assembly (20) is by stator (21), rotor (22) and bent axle (23) are formed, compressor assembly (30) comprises cylinder (31), be provided with upper bearing (metal) (32) in the top of cylinder (31), be provided with lower bearing (32) in the below of cylinder (31), be provided with piston (35) in the inside of cylinder (31), form baffle plate groove (40) in the inside of cylinder (a 31) side, in baffle plate groove (40), be provided with baffle plate (38), it is characterized in that: the profile of described baffle plate (38) is to have a certain thickness cuboid, is inlaid with permanent magnet (39) in the inside of an end of baffle plate (38).

2. no spring revolution type compressor according to claim 1 is characterized in that: described permanent magnet (39) is a cuboid.

3. no spring revolution type compressor according to claim 1 is characterized in that: the magnetic intensity of permanent magnet (39) is between 200～500 Gauss spies.

4. no spring revolution type compressor according to claim 1 is characterized in that: the width of baffle plate groove (40) greater than baffle plate (38) thickness.