CN102200128A - Crank shaft and air cylinder structure of closed type compressor - Google Patents

Abstract

The invention discloses a crank shaft and air cylinder structure of a closed type compressor. The compressor comprises a shell; the upper side inside the shell is provided with a motor assembly; a compressor assembly is arranged on the lower side of the motor assembly at intervals; the motor assembly comprises a stator, a rotor and a rotation crank shaft which is fixedly pressed in the center of the rotor and is used for passing rotary force; the compressor assembly comprises a piston, an air cylinder, an upper bearing, a lower bearing and an air suction silencer; a groove is formed at the outer side of an eccentric part; a magnet matched with the groove is arranged in the groove; a groove is formed at the inner side of the air cylinder; and a magnet matched with the groove is arranged in the groove. In the structure, since the magnets are arranged on the eccentric part of the crank shaft and the inner side of the air cylinder, the magnetic force produced by a pair of the magnets with opposite polarities can be utilized to assist in the rotation of the compressor during the exhaust period of the compressor when the compressor runs, so that the input power of the compressor is reduced, and the efficiency of the compressor is improved.

Description

The bent axle of hermetic type compressor and cylinder structure

Technical field

The invention belongs to a kind of compressor, be specifically related to a kind of bent axle and cylinder structure of hermetic type compressor.

Background technique

As shown in Figure 1, 2, the hermetic type 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, one side contacts with the excircle upper thread of rolling piston 35, and is the structures such as baffle plate 36 of 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 piston 35 forms.The intakeport (not shown) that also is communicated with the sucking pipe in the suction area in the cylinder 31, and the relief opening 37 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 sucking pipe 14 in the bottom of seal casinghousing 1, be discharged to seal casinghousing 1 outside, on loam cake 12, be provided with outlet pipe 15, on loam cake 12, also be provided with the wiring terminal 16 that connects power line for making dielectric gas by baffler 34.

The working principle of prior art compressor and process:

After motor is connected power initiation, bent axle begins to rotate, piston carries out the rotation of rotation and revolution under the drive of crankshaft eccentric portion, cylinder wall has the groove of a break-through, and baffle plate is installed in the groove, the quality of fit of baffle plate and groove requires very high, baffle plate slides in groove under the drive of piston, because baffle plate is suction area and compressing area with compression volume C zoning, when crankshaft rotating during one week, piston rotates a circle around cylinder, and air-inlet cavity is finished intake process.Meanwhile, compression chamber is finished once compression and exhaust process.

But, in the hermetic type compressor of prior art, when compressor operation, because the pressure of gas is very big, compressor pump can form very big moment of torsion in carrying out exhaust process, so not only can cause the distortion of compressor pump, also can waste a lot of powers input to a machine, make the decrease in efficiency of compressor.

Summary of the invention

The present invention is for the shortcoming that overcomes prior art proposes, and its objective is provides a kind of bent axle and cylinder structure that improves the hermetic type compressor of compressor efficiency.

Technological scheme of the present invention is: a kind of bent axle of hermetic type compressor and cylinder structure, described compressor comprises housing, in the upper inside of housing electric machine assembly is installed, at the downside of the electric machine assembly compressor assembly that is equipped with separated by a distance.Housing comprises cylindrical shell, loam cake and lower cover, and electric machine assembly is pressed on the inner peripheral surface that is fixed on cylindrical shell, and electric machine assembly comprises stator, rotor and is pressed into the rotary crankshaft that is fixed on centre of rotor and transmits rotating force.

Compressor assembly comprises piston, cylinder, upper bearing (metal), lower bearing and inhaling silencer.

The outside at eccentric part forms concave groove, is provided with magnet in concave groove, at the inboard concave groove that forms of cylinder, is provided with magnet in concave groove.

The magnet in the eccentric part outside cooperates with the concave groove in the eccentric part outside, and the magnet of cylinder inboard cooperates with the concave groove of cylinder inboard.

The polarity of two magnet is opposite.

Form T type groove in the outside of eccentric part, in T type groove, be provided with T type magnet,, in T type groove, be provided with T type magnet at the inboard T type groove that forms of cylinder.

T type magnet and T type groove are worked in coordination, and the polarity of two T type magnet is opposite.

The present invention is owing to be provided with magnet at the eccentric part of bent axle and the inboard of cylinder, when compressor operation, in the compressor air-discharging stage, the magnetic force that can utilize a pair of opposite polarity magnet to form, the auxiliary compressor running, so just reduce the input power of compressor, improved the efficient of compressor.

Description of drawings

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

Fig. 2 is the assembling schematic representation of cylinder, piston, bent axle and the baffle plate of prior art;

Fig. 3 is the longitudinal sectional drawing that the hermetic type compressor of cylinder of the present invention and crankshaft structure is installed;

Fig. 4 is a bent axle plan view of the present invention;

Fig. 5, the 6th, the assembling schematic representation of cylinder of the present invention, piston, bent axle and baffle plate.

Wherein:

1 housing, 11 cylindrical shells

12 loam cakes, 13 lower covers

14 sucking pipes, 15 outlet pipes

16 power-line terminals, 20 electric machine assemblies

21 stators, 22 rotors

23 bent axle 23a eccentric parts

30 compressor assemblies, 31 cylinders

32 upper bearing (metal)s, 33 lower bearings

34 bafflers, 35 pistons

36 baffle plates, 40 electric machine assemblies

The eccentric sound of 41 bent axle 41a

42 concave grooves, 43 magnets

44 T type grooves, 45 T type magnet

51 cylinders, 52 exhaust ports

53 concave grooves, 54 magnets

Embodiment

Below, be elaborated with reference to the bent axle and the cylinder structure of drawings and Examples to hermetic type compressor of the present invention:

Shown in Fig. 3～5, a kind of bent axle of hermetic type compressor and cylinder structure, described hermetic type compressor comprises housing 1, in the upper inside of housing 1 electric machine assembly 40 is installed, at the downside of electric machine assembly 40 compressor assembly 50 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 40 is pressed on the inner peripheral surface that is fixed on cylindrical shell 11, and it comprises stator 21, rotor 22 and is pressed into the center that is fixed on rotor 22 and transmits the rotary crankshaft 41 of rotating force.

Compressor assembly 50 comprises piston 35, cylinder 51, upper bearing (metal) 32, lower bearing 33 and inhaling silencer 34, at the inner eccentric part 41a that forms rotary crankshaft 41 of the compression volume C of cylinder 51, in the arranged outside of eccentric part 41a piston 35 is arranged.Inboard at cylinder 51 forms exhaust port 52.

Be connected with air suction silencer 34 on the top of upper bearing (metal) 32, be discharged to seal casinghousing 1 outside, on loam cake 12, be provided with outlet pipe 15, be provided with sucking pipe 14 in the bottom of seal casinghousing 1 for making dielectric gas by air suction silencer 44.

The outside at eccentric part 41a forms concave groove 42, is provided with magnet 43 in concave groove 42.Near the exhaust port 52 of cylinder 51 inboards, form concave groove 53, in concave groove 53, be provided with magnet 54.

Magnet 43 and concave groove 42 cooperate, and magnet 54 and concave groove 53 cooperate.

The polarity of magnet 43 and magnet 54 is opposite.

As shown in Figure 6,, form T type groove 44, in T type groove 44, be provided with T type magnet 45,, in T type groove 55, be provided with T type magnet 56 at the cylinder 51 inboard T type grooves 55 that form in the outside of eccentric part 41a as another embodiment.

T type magnet 45 and T type groove 44 are worked in coordination, and T type magnet 56 and T type groove 55 are worked in coordination, and the polarity of magnet 45 and magnet 56 is opposite.

The present invention is owing to be provided with magnet at the eccentric part of bent axle and the inboard of cylinder, when compressor operation is, in the compressor air-discharging stage, the magnetic force that can utilize a pair of opposite polarity magnet to form, the auxiliary compressor running, so just reduce the input power of compressor, improved the efficient of oppressive machine.

Claims (5)

1. the bent axle of a hermetic type compressor and cylinder structure, described hermetic type compressor, comprise housing (1), upper inside at housing (1) is equipped with electric machine assembly (40), at the downside of electric machine assembly (40) compressor assembly (50) that is equipped with separated by a distance, housing (1) is by cylindrical shell (11), loam cake (12) and lower cover (13) are formed, electric machine assembly (40) is pressed on the inner peripheral surface that is fixed on cylindrical shell (11), electric machine assembly (40) comprises stator (21), rotor (22) and be pressed into the center that is fixed on rotor (22) and transmit the rotary crankshaft (41) of rotating force, compressor assembly (50) comprises piston (35), cylinder (51), upper bearing (metal) (32), lower bearing (33) and inhaling silencer (34), it is characterized in that: the outside at eccentric part (41a) forms concave groove (42), in concave groove (42), be provided with magnet (43), at the inboard concave groove (53) that forms of cylinder (51), in concave groove (53), be provided with magnet (54).

2. the bent axle of hermetic type compressor according to claim 1 and cylinder structure is characterized in that: magnet (43) and concave groove (42) cooperation, magnet (54) and concave groove (53) cooperation.

3. the bent axle of hermetic type compressor according to claim 1 and cylinder structure, it is characterized in that: the polarity of magnet (43) and magnet (54) is opposite.

4. the bent axle of hermetic type compressor according to claim 1 and cylinder structure, it is characterized in that: the outside at eccentric part (41a) forms T type groove (44), in T type groove (44), be provided with T type magnet (45), at the inboard T type groove (55) that forms of cylinder (51), in T type groove (55), be provided with T type magnet (56).

5. the bent axle of hermetic type compressor according to claim 4 and cylinder structure, it is characterized in that: T type magnet (45) and T type groove (44) are worked in coordination, T type magnet (56) and T type groove (55) are worked in coordination, and the polarity of magnet (45) and magnet (56) is opposite.

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