CN218235473U - Low-noise integrated high-compression-ratio oil-free scroll compressor - Google Patents

Abstract

The utility model relates to a low noise integrates high compression ratio and does not have oily scroll compressor, including motor, eccentric main shaft, vortex movable disk and vortex quiet dish, the quiet dish of vortex includes quiet whirlpool dish and cooling bellows, quiet whirlpool dish crimping vortex movable disk is on the motor casing of motor and through screw cross-under locking, all set up low pressure sealing strip on quiet whirlpool dish and vortex movable disk crimping terminal surface, vortex movable disk and the motor casing crimping terminal surface, air inlet and gas vent switch-on quiet pairing vortex movable disk move the compression intracavity that the vortex dish formed, quiet whirlpool dish, movable whirlpool dish correspond respectively and laminate and set up high pressure sealing strip between the compression chamber bottom end face; the lower end of the motor is provided with a fan box, a cooling fan is arranged in the fan box, the eccentric main shaft penetrates out of the lower end of the motor shell and is connected with the cooling fan, and the fan is connected with a cooling air box through a bypass air pipe. The structure is compact, low noise and heat dispersion of the equipment are taken into consideration, and stable high compression ratio is ensured.

Description

Low-noise integrated oil-free scroll compressor with high compression ratio

Technical Field

The utility model relates to a scroll compressor, a low noise integrates high compression ratio oil-free scroll compressor specifically says so.

Background

The oil-free scroll air compressor is widely applied to occasions needing compressed air in industries such as industry, agriculture, transportation and the like due to the advantages of high efficiency, low noise, small volume, energy conservation, environmental protection and the like. The main operation part of the oil-free scroll air compressor is a scroll disk, and the scroll disk is only meshed without abrasion, so that the service life of the oil-free scroll air compressor is longer than that of a piston type screw compressor, and the oil-free scroll air compressor is an ideal power source of a pneumatic machine. In an oil-free scroll air compressor, a scroll disk serving as a main operation part is divided into a movable disk and a fixed disk, scroll pieces are arranged in the movable disk and the fixed disk, generally, the movable disk and the fixed disk are combined with each other to form a compression cavity, when the movable disk is driven by a crankshaft to make translation along a certain circumferential track, the movable disk scroll pieces move relative to the fixed disk scroll pieces, namely, the compression cavity formed by the movable disk and the fixed disk scroll pieces moves and changes the volume of the compression cavity, so that the processes of sucking, compressing and discharging are carried out, and the process of compressing air is completed.

The existing scroll air compressor in the market is a compressor disclosed as CN106989018B, the movable scroll disk of the existing scroll air compressor is acted by downward compressed air pressure of a compression cavity for a long time, the supporting performance of a main shaft is influenced, and the service life of the main shaft transmission and the bearing support is shortened; in addition, the sealing performance of a compression cavity formed by the matching of the movable vortex disk and the fixed vortex disk at the joint of the vortex disk and the cavity bottom is poor, the compression performance is directly influenced, and the requirement of higher compression ratio cannot be met. In addition, the high-speed compression operation has high exhaust temperature rise on the static scroll disk, and is inconvenient for the long-term safe use of equipment.

Disclosure of Invention

The utility model provides a compact structure compromises equipment low noise, heat dispersion, ensures to stabilize the low noise of high compression ratio and integrates high compression ratio oil-free scroll compressor.

The utility model adopts the technical proposal that: the utility model provides a low noise integrates high compression ratio and does not have oily scroll compressor, includes motor, eccentric main shaft, vortex driving disk and the quiet dish of vortex, and eccentric main shaft cross-under is in the motor, and the motor casing of motor is worn out through the bearing in eccentric main shaft upper end, and the eccentric shaft section warp beam of eccentric main shaft accepts the vortex driving disk, and the cooperation sets up the quiet dish of vortex on the vortex driving disk, its characterized in that: the vortex static disc comprises a static vortex disc and a cooling air box, the cooling air box is arranged on the static vortex disc, the centers of the cooling air box and the static vortex disc are communicated and connected with an air outlet, and the side edge of the cooling air box is connected with an air inlet; the lower end of the motor is provided with a fan box, a cooling fan is arranged in the fan box, the eccentric main shaft penetrates out of the lower end of the motor shell and is connected with the cooling fan, and the fan is connected with a cooling air box through a bypass air pipe.

The motor casing upper end sets up the indent structure, and the indent structure forms pressure balance chamber with the vortex driving disk, sets up the pressure regulating hole on the vortex driving disk, and pressure regulating hole switch-on compression chamber and pressure balance chamber.

A plurality of anti-rotation devices are uniformly distributed on the circumference in the pressure balance cavity and comprise anti-rotation bearings and anti-rotation cranks, the two anti-rotation bearings are respectively fixed on the lower end face of the vortex moving disc and the concave bottom end face of the motor shell, and the two ends of each crank are respectively connected in the two anti-rotation bearings in a penetrating mode.

The lower end of a motor shell of the motor is sealed by a motor rear cover, the cooling air box is connected to the lower end of the rear end of the motor, and the lower part of the eccentric spindle penetrates out of the motor rear cover through a shaft seal.

And a nut is screwed on the eccentric main shaft in the shaft seal, a main shaft bearing is supported on the nut, and the main shaft bearing is abutted and fixed at the lower end of a fastening sleeve on the eccentric main shaft through a wave spring.

And the vortex walls of the static vortex disk and the movable vortex disk are provided with Ni-P-B coatings or polytetrafluoroethylene coatings.

Adopt above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. the fixed scroll disk and the movable scroll disk have Ni-P-B coatings or polytetrafluoroethylene coatings on the scroll walls, so that the strength and the wear-resistant impact property of the scroll walls are improved, a small gap is reserved between the scroll wall parts of the movable scroll disk and the fixed scroll disk, the scroll walls are not rubbed during operation, the noise is reduced, and the service life is prolonged;

2. the vortex wall of the static vortex disk and the movable vortex disk is embedded with a high-pressure sealing strip on the bottom end surface forming the compression cavity to form a closed compression cavity with higher sealing performance, so that the compression ratio can be improved, and the maximum exhaust pressure is improved;

3. the anti-rotation device adopts an anti-rotation bearing and an anti-rotation crank 8 to limit the motion track of the vortex moving disc, so that the vortex moving disc performs rotary translation according to the designed track, and rotation is effectively prevented;

4. the axial compression joint end surfaces of the vortex moving disc, the vortex static disc and the motor shell are provided with low-pressure sealing strips, so that impurities such as oil gas dust and the like are prevented from entering a compression cavity;

5. when compression working medium is the air, the design of vortex driving disk has the pressure regulating hole, passes through the pressure regulating hole with partial compressed air and gets into the pressure balance intracavity that vortex driving disk and motor shell formed, forms certain pressure and supports the vortex driving disk, reduces the axial force of vortex driving disk, and the size and the position in pressure regulating hole need be according to required balanced pressure design.

Drawings

FIG. 1 is a three-dimensional structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the present invention;

fig. 3 is an enlarged view of a portion a in fig. 2.

In the figure: the device comprises a motor shell 1, a motor 2, an eccentric spindle 3, an upper bearing 4, a lower bearing 5, a nut 6, a wave spring 7, a fastening sleeve 8, a pressure balance cavity 9, a vortex moving disc 10, a moving vortex disc 11, a moving disc 12, a compression cavity 13, a vortex fixed disc 14, a fixed vortex disc 15, a fixed disc 16, a pressure regulating hole 17, a low-pressure sealing strip 18, an anti-rotation bearing 19, an anti-rotation crank 20, a cooling air box 21, an exhaust port 22, an air inlet 23, an air pipe 24, a fan box 25, a fan 26, a cooling fan 27, a high-pressure sealing strip 28, an air duct 29 and a motor rear cover 30.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

FIG. 1 shows: a low-noise integrated oil-free scroll compressor with high compression ratio comprises a motor shell 1, a cooling air box 21, a static scroll disc 14, an air pipe 24 and a fan box 25, wherein a motor is arranged in the motor shell 1, the upper part of the motor shell 1 is connected with the static scroll disc 14, the upper part of the static scroll disc 14 is connected with the cooling air box 21, the middle part and the side edge of the cooling air box are respectively provided with an air outlet 22 and an air inlet 23, and the internal connection structure of the air outlet 22 and the air inlet 23 belongs to the prior art of the upper air inlet and outlet scroll compressor (such as patent numbers 201880092084.2, 201918004619. X and the like), and the detailed drawing is not needed in the drawing; a plurality of air ducts 29 are arranged in the cooling air box 21, the air ducts 29 are arranged from the air outlet 22 to the air inlet 23 and are exhausted from one side of the air inlet when moving, and one side of the cooling air box 21 far away from the air inlet is connected with the fan box 21 arranged below the motor shell 1 through the air pipe 24.

The internal structure of the compressor of the present application shown in fig. 2-3: motor 2 is arranged in motor casing 1, eccentric main shaft 3 cross-under is in motor 2, motor casing 1 lower extreme covers through motor back cover 30 dress, 3 lower parts of eccentric main shaft cup joint fastening sleeve 8 and connect nut 6 soon, 3 lower extremes of eccentric main shaft are through 8 crimping motor back cover 30 interior wave spring 7 of fastening sleeve, lower bearing 5 supports on nut 6, the upper end is through upper bearing 4 cross-under in motor casing 1 upper end, 3 lower parts of eccentric main shaft wear out motor back cover 30 through bearing seal 2 and connect cooling fan 27 down, cooling fan 27 is arranged in the fan case 25 that motor back cover connects down.

The upper end of the motor shell 1 is locked and supported with a static vortex disc 14, the static vortex disc 14 is pressed on a movable disc 12 of a movable vortex disc 10 by a shell body, and low-pressure sealing strips 18 are uniformly arranged between the end surface of the shell body of the static vortex disc 14 and the movable disc 12 and between the movable disc 12 and the upper end surface of the motor shell 1; a pressure balance cavity 9 is formed between a movable disc 12 of a vortex movable disc 10 and a motor shell 1, an upper eccentric shaft section of an eccentric main shaft 3 extends upwards out of the motor shell and is connected into a compression cavity 13, and the movable disc 12 is supported by a shaft, a plurality of anti-rotation devices are uniformly distributed on the circumference between the bottom end of the pressure balance cavity 9 and the lower end of the movable disc 12, each anti-rotation device comprises an anti-rotation bearing 19 and an anti-rotation crank 20, the two anti-rotation bearings are respectively fixed on the lower end face of the movable disc 12 and the bottom end face of the pressure balance cavity 9, and two ends of each anti-rotation crank 20 are respectively connected into the two anti-rotation bearings 19 in a penetrating manner; the movable scroll disk 11 of the scroll movable disk 10 is upwards matched with the static scroll disk 15 of the scroll static disk 14 to form a compression cavity 13, the center of the compression cavity 13 is upwards connected with an exhaust port 22 and is connected with an air inlet from the outer side, the movable scroll disk 11 is also provided with a pressure regulating hole 17, and the pressure regulating hole 17 is connected with the compression cavity 13 and a pressure balance cavity 9; and high-pressure sealing strips 28 are arranged between the fixed scroll 15 of the scroll fixed disc 14 and the movable scroll 11 in the compression cavity and between the movable scroll 11 of the scroll movable disc 10 and the fixed scroll 16 in the compression cavity.

In the embodiment, a Ni-P-B coating or a polytetrafluoroethylene coating is arranged on the scroll walls of the fixed scroll and the movable scroll.

Claims (6)

1. The utility model provides a low noise integrates high compression ratio and does not have oily scroll compressor, includes motor, eccentric main shaft, vortex driving disk and the quiet dish of vortex, and eccentric main shaft cross-under is in the motor, and the motor casing of motor is worn out through the bearing in eccentric main shaft upper end, and the eccentric shaft section warp beam of eccentric main shaft accepts the vortex driving disk, and the cooperation sets up the quiet dish of vortex on the vortex driving disk, its characterized in that: the vortex static disc comprises a static vortex disc and a cooling air box, the cooling air box is arranged on the static vortex disc, the centers of the cooling air box and the static vortex disc are communicated and connected with an air outlet and an air inlet at the side, the static vortex disc is in pressure connection with a vortex moving disc on a motor shell of the motor and is in cross connection and locked through screws, low-pressure sealing strips are arranged on the pressure connection end surfaces of the static vortex disc and the vortex moving disc and the pressure connection end surfaces of the vortex moving disc and the motor shell, the air inlet and the air outlet are communicated with a compression cavity formed by the static vortex disc and the vortex moving disc, and high-pressure sealing strips are arranged between the bottom end surfaces of the static vortex disc and the vortex moving disc and correspondingly attached to the compression cavity; the lower end of the motor is provided with a fan box, a cooling fan is arranged in the fan box, the eccentric main shaft penetrates out of the lower end of the motor shell and is connected with the cooling fan, and the fan is connected with a cooling air box through a bypass air pipe.

2. The low noise integrated high compression ratio oil-free scroll compressor as claimed in claim 1, wherein: the motor casing upper end sets up the indent structure, and the indent structure forms pressure balance chamber with the vortex driving disk, sets up the pressure regulating hole on the vortex driving disk, and pressure regulating hole switch-on compression chamber and pressure balance chamber.

3. A low noise integrated high compression ratio oil-free scroll compressor as claimed in claim 2, wherein: a plurality of anti-rotation devices are uniformly distributed on the circumference in the pressure balance cavity and comprise anti-rotation bearings and anti-rotation cranks, the two anti-rotation bearings are respectively fixed on the lower end face of the vortex moving disc and the concave bottom end face of the motor shell, and the two ends of each crank are respectively connected in the two anti-rotation bearings in a penetrating mode.

4. The low noise integrated high compression ratio oil-free scroll compressor as claimed in claim 1, wherein: the lower end of a motor shell of the motor is sealed by a motor rear cover, a cooling air box is connected to the lower end of the rear end of the motor, and the lower part of the eccentric spindle penetrates out of the motor rear cover through a shaft seal.

5. The low noise integrated high compression ratio oil-free scroll compressor as claimed in claim 4, wherein: and a nut is screwed on the eccentric main shaft in the shaft seal, a main shaft bearing is supported on the nut, and the main shaft bearing is abutted and fixed at the lower end of a fastening sleeve on the eccentric main shaft through a wave spring.

6. The low noise integrated high compression ratio oil-free scroll compressor as claimed in claim 1, wherein: and the vortex walls of the static vortex disk and the movable vortex disk are provided with Ni-P-B coatings or polytetrafluoroethylene coatings.

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