CN102330680A

CN102330680A - Scroll compressor

Info

Publication number: CN102330680A
Application number: CN201110292120A
Authority: CN
Inventors: 严黎坚
Original assignee: Anhui Meizhi Compressor Co Ltd
Current assignee: Anhui Meizhi Compressor Co Ltd
Priority date: 2011-09-30
Filing date: 2011-09-30
Publication date: 2012-01-25

Abstract

The invention discloses a scroll compressor, which comprises a shell, a crank shaft, a stander, a movable scroll disc, a fixed scroll disc, a gas suction pipe, an exhaust hole, an exhaust return stop mechanism and an exhaust pipe, wherein the crank shaft is arranged in the shell; the stander is arranged on the crank shaft; the movable scroll disc is arranged at the top end of the crank shaft and is positioned above the stander; the fixed scroll disc is arranged above the movable scroll disc and is mutually engaged with the movable scroll disc; the gas suction pipe is arranged on the fixed scroll disc and is communicated with a compression chamber which is formed by engaging the movable scroll disc with the fixed scroll disc; the exhaust hole is formed in the top of the fixed scroll disc and is communicated with the central compression chamber; the exhaust return stop mechanism is arranged above the fixed scroll disc and is communicated with the exhaust hole; the exhaust pipe is arranged below the stander; both the gas suction pipe and the exhaust pipe extend out of the shell; the outer wall of the stander is provided with an exhaust passage; and the exhaust passage has a divergent structure from top to bottom. The scroll compressor has a simple structure; only the groove shape of the exhaust passage is required to be changed; through the structure of the exhaust passage, the flow velocity for flowing a refrigerant into a low-pressure chamber is reduced, which contributes to oil-gas separation, and the noise level is reduced; and meanwhile, the degree of superheat of the refrigerant which enters the low-pressure chamber is reduced, so that the refrigeration cycle efficiency of the refrigerant is increased.

Description

Scroll compressor

Technical field

The present invention relates to the scroll compressor field, specifically is a kind of scroll compressor that can reduce the refrigerant degree of superheat.

Background technique

The stream of refrigerant in the scroll compressor in scroll compressor is to get in the compression chamber of moving vortex and fixed scroll engagement formation from sucking pipe earlier; Moving scroll revolves round the sun around bent axle under the driving of bent axle; Refrigerant obtains energy in moving scroll and fixed scroll formation many to compression chamber; Be discharged to hyperbaric chamber through the exhaust non-return mechanism then, the exhaust passage through frame gets into low pressure chamber again, discharges the entering condenser through outlet pipe at last and participates in heat exchange.When refrigerant flowed into low pressure chamber from hyperbaric chamber, flow velocity can increase suddenly, will produce the high-decibel noise; And the flow velocity height is unfavorable for effective separation of oil gas; The high pressure loss that produces of relative flow velocity is excessive, can cause the refrigerant degree of superheat to increase, thereby causes refrigeration cycle efficient to reduce.

Summary of the invention

The technical problem that the present invention will solve provides a kind of scroll compressor, and the refrigerant degree of superheat is too high in the existing scroll compressor of solution, influences the problem of the refrigerating efficiency of scroll compressor.

Technological scheme of the present invention is:

Scroll compressor; Comprise shell; Be arranged at bent axle in the shell, be arranged at frame on the bent axle, be arranged at the top of bent axle and be positioned at the top of frame moving scroll, be arranged at moving scroll top and with the intermeshing fixed scroll of moving scroll, be arranged on the fixed scroll and exhaust port that the sucking pipe that is communicated with compression chamber that moving scroll and fixed scroll engagement form, the top that is arranged at fixed scroll are communicated with the center compression chamber, be arranged at the exhaust non-return mechanism that is communicated with exhaust port above the fixed scroll and be arranged at the outlet pipe below the frame; Described sucking pipe and outlet pipe all reach outside the housing; The outer wall of described frame is provided with the exhaust passage, and the exhaust passage is the gradually expansion type structure from top to bottom.

Described exhaust passage be shaped to curve or high order curve moulding.

Advantage of the present invention: the exhaust passage of frame is a gradually expansion type along the refrigerant flow direction, so the flow velocity that its refrigerant flows through reduces gradually, so the noise that refrigerant produced when flowing through the exhaust passage can reduce, and flow velocity reduces the effective separation help oil gas; Relative flow velocity reduces, and separating pressure raises gradually, thereby the saturation temperature of refrigerant improves, and then the refrigerant temperature degree that is higher than saturation temperature also reduces, and the refrigerant degree of superheat that promptly gets into low pressure chamber reduces, and improves the refrigeration cycle efficient of refrigerant.

Description of drawings

Fig. 1 is a structural representation of the present invention; Wherein, the flow direction of "

" expression refrigerant.

Fig. 2 is the structural representation one of frame of the present invention; Wherein, the flow direction of "

" expression refrigerant.

Fig. 3 is the structural representation two of frame of the present invention; Wherein, the flow direction of " " expression refrigerant.

Embodiment

See Fig. 1; Scroll compressor; Comprise shell 1; Be arranged at bent axle 2 in the shell 1, be arranged at frame 3 on the bent axle 2, be arranged at the top of bent axle 2 and be positioned at the top of frame 3 moving scroll 4, be arranged at moving scroll 4 tops and with the intermeshing fixed scroll of moving scroll 45, be arranged on the fixed scroll 5 and exhaust port 8 that the sucking pipe 7 that is communicated with compression chamber 6 that moving scroll 4 and fixed scroll 5 engagements form, the top that is arranged at fixed scroll 5 are communicated with center compression chamber 6, be arranged at exhaust non-return mechanism 9 that fixed scroll 5 tops are communicated with exhaust port 8 and the outlet pipe 10 that is arranged at frame 3 belows, sucking pipe 7 and outlet pipe 10 all reach outside the housing 1;

See Fig. 2, Fig. 3, the outer wall of frame 3 is provided with exhaust passage 11, and exhaust passage 11 is the gradually expansion type structure from top to bottom, and the gradually expansion type structure is curve (see figure 2) or the moulding of high order curve (see figure 3).

See Fig. 1; The stream of refrigerant in scroll compressor is: 6 li of compression chambers that get into earlier moving vortex and fixed scroll engagement formation from sucking pipe 7; Around the bent axle revolution, refrigerant obtains energy in moving scroll and fixed scroll formation many to compression chamber to moving scroll, is discharged to hyperbaric chamber 12 through exhaust port 8, exhaust non-return mechanism 9 then under the driving of bent axle 2; Exhaust passage 11 through frame gets into low pressure chamber 13 again, discharges the entering condenser through outlet pipe 10 at last and participates in heat exchange.When refrigerant was flowed through exhaust passage 11, exhaust passage 11 was the gradually expansion type structure, had reduced the flow velocity that refrigerant flows through, and noise reduced when it flow through exhaust passage 11, and flow velocity reduces the oil gas help refrigerant and effectively separates; Relative flow velocity reduces, and separating pressure raises gradually, thereby the saturation temperature of refrigerant improves, and then the refrigerant temperature degree that is higher than saturation temperature also reduces, and the refrigerant degree of superheat that promptly gets into low pressure chamber reduces, and improves the refrigeration cycle efficient of refrigerant.

Claims

1. scroll compressor; Comprise shell; Be arranged at bent axle in the shell, be arranged at frame on the bent axle, be arranged at the top of bent axle and be positioned at the top of frame moving scroll, be arranged at moving scroll top and with the intermeshing fixed scroll of moving scroll, be arranged on the fixed scroll and exhaust port that the sucking pipe that is communicated with compression chamber that moving scroll and fixed scroll engagement form, the top that is arranged at fixed scroll are communicated with the center compression chamber, be arranged at the exhaust non-return mechanism that is communicated with exhaust port above the fixed scroll and be arranged at the outlet pipe below the frame; Described sucking pipe and outlet pipe all reach outside the housing; It is characterized in that: the outer wall of described frame is provided with the exhaust passage, and the exhaust passage is the gradually expansion type structure from top to bottom.

2. scroll compressor according to claim 1 is characterized in that: described exhaust passage be shaped to curve or high order curve moulding.