CN202348677U

CN202348677U - Scroll compressor

Info

Publication number: CN202348677U
Application number: CN2011204645125U
Authority: CN
Inventors: 黄志刚; 许世璋
Original assignee: Anhui Meizhi Compressor Co Ltd
Current assignee: Anhui Meizhi Compressor Co Ltd
Priority date: 2011-11-22
Filing date: 2011-11-22
Publication date: 2012-07-25
Anticipated expiration: 2021-11-22

Abstract

The utility model discloses a scroll compressor. A part of a frame of the scroll compressor, which is located below an oil drainage hole, is provided with an oil return hole communicated with a frame oil nest; the oil return hole is internally provided with a differential pressure valve; the frame is externally sleeved with an annular oil tank cover, the oil tank cover consists of an annular bottom plate and an annular side plate connected with an external ring of the annular bottom plate; the internal wall of the annular bottom plate and the external wall of the frame below the oil return hole are connected to form a frame oil tank; and the upper part of the annular side plate is provided with the oil drainage hole communicated with an oil return passage. The scroll compressor disclosed by the utility model has a simple structure and is convenient to install; the abnormal abrasion of each friction surface during the movement of a crankshaft is avoided, and the reliability and the service life of the compressor are increased.

Description

Scroll compressor

Technical field

The utility model relates to the scroll compressor field, specifically is a kind of scroll compressor that can slow down inordinate wear between scroll compressor when running bent axle and the main bearing.

Background technique

Existing scroll compressor structure is in some fuel feeding bad working environments or when being in the start and stop state for a long time, probably because oil starvation and lack of lubrication causes the inordinate wear of bearing portion between scroll compressor main bearing and the bent axle.And main bearing is a compressor operating key load-bearing component, and the abnormal wear of main bearing is prone to cause compressor failure, has a strong impact on compressor reliability.

The model utility content

The technical problem that the utility model will solve provides a kind of scroll compressor, solves between existing scroll compressor main bearing and the bent axle problem that influences scroll compressor reliability and working life owing to oil starvation.

The technological scheme of the utility model is:

Scroll compressor; Comprise housing; Be arranged at the bent axle that has crankshaft oil hole in the housing, be arranged at the bent axle bottom the electric motor rotor, be set in the outer electric motor stator iron core of electric motor rotor, be arranged at bent axle top and the moving scroll that connects through capacity eccentric bearing, be arranged at moving scroll top and the intermeshing fixed scroll of moving scroll, be arranged at moving scroll below and the frame that is connected with bent axle through main bearing and be arranged in the housing and be positioned at bottom oil sump; Described moving scroll and the fixed scroll formation compression chamber that is meshing with each other; Form frame oil nest between described moving scroll and the frame; Form drainback passage between described electric motor stator iron core and the inner walls; Described frame is provided with the oil drainage hole that is communicated with frame oil nest, and the below that is positioned at oil drainage hole on the described frame is provided with the spill port that is communicated with frame oil nest, is provided with pressure difference valve in the spill port; Described frame is set with annular oil sump cover outward; The oil sump cover is made up of annular bottom plate and the annular side plate that is connected in the annular bottom plate outer ring; The frame outer wall of annular bottom plate inwall and spill port below is connected to form the frame oil sump, and the top of annular side plate is provided with the oil outlet that is communicated with drainback passage.

The top of described oil sump shroud ring shape side plate is connected with frame.

The advantage of the utility model: the utility model is simple in structure, easy for installation, only needs the oil sump cover to be set outside frame and on frame, to increase spill port to get final product, and forms the frame oil sump between oil sump cover and the frame; The frame oil sump carries out of short duration storage to the oil that in oil drainage hole, flows out; When the oil starvation state appearred in compressor operating, the pressure difference valve in the frame spill port was opened, and the of short duration refrigeration oil that is stored in the frame oil sump can flow into frame oil nest from spill port; Flow between crank spindle portion and the main bearing from frame oil nest again; Lubricated main shaft part reduces the frictional force that bent axle moves, and increases the utilization efficiency and the working life of compressor.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is the linkage structure schematic representation of the utility model oil sump cover and frame.

Fig. 3 is the structure for amplifying schematic representation of pressure difference valve.

Embodiment

See Fig. 1; Scroll compressor; Comprise housing 1; Be arranged at the bent axle 2, the electric motor rotor 3 that is arranged at bent axle 2 bottoms that have crankshaft oil hole 19 in the housing 1, be set in the outer electric motor stator iron core 4 of electric motor rotor 3, be arranged at bent axle 2 tops and the moving scroll 5 that connects through capacity eccentric bearing 8, be arranged at the intermeshing fixed scroll of moving scroll 5 tops and moving scroll 56, be arranged at moving scroll 5 belows and the frame 7 that is connected with bent axle 2 through main bearing 9 and be arranged at the oil sump 18 bottom being positioned in the scroll compressor housing 1; Form compression chamber 20 between moving scroll 5 and the fixed scroll 6; Form frame oil nest 10 between moving scroll 5 and the frame 7, form drainback passage 11 between electric motor stator iron core 4 and housing 1 inwall;

See Fig. 2; Frame 7 is provided with the oil drainage hole 12 and spill port 13 that is communicated with frame oil nest 10; Spill port 13 is arranged in below and the spill port 13 of oil drainage hole 12 and is provided with pressure difference valve 14 (see figure 3)s; Be set with annular oil sump cover 15 outside the frame 7; Oil sump cover 15 is made up of annular bottom plate and the annular side plate that is connected in the annular bottom plate outer ring, and frame 7 outer walls of annular bottom plate inwall and spill port 13 belows are connected to form frame oil sump 16, and the top of annular side plate is connected with frame 7 and the top of annular side plate is provided with the oil outlet 17 that is communicated with drainback passage 11.

See Fig. 1, Fig. 2; The stream of refrigeration oil in scroll compressor is: in the refrigeration oil elder generation suction crankshaft oil hole 19 in the oil sump 18 of scroll compressor bottom; Refrigeration oil gets into moving scroll 5 and decides in the compression chamber 20 between the scroll 6 through frame oil nest 10 then; Part refrigeration oil in the compression chamber 20 flows out through the oil drainage hole in the frame 7 12 and gets in the frame oil sump 16; When oil mass in the frame oil sump 16 continued to increase, refrigeration oil was discharged in the oil sump 18 of compressor bottom through oil outlet 17, drainback passage 11 successively; And when the oil starvation state appears in the scroll compressor operation; Can produce pressure reduction between frame oil sump 16 and the frame oil nest 10; This pressure differential pressure difference valve 14 is opened automatically, and the refrigeration oil in the frame oil sump 16 is got back to frame oil nest 10 through spill port 13, flows into the gap between main bearing 9 and the bent axle 2 then; Lubricated bent axle 2 and main bearing 9 are to improve the reliability of scroll compressor in some specific operation or abnormal conditions.

Claims

1. scroll compressor; Comprise housing; Be arranged at the bent axle that has crankshaft oil hole in the housing, be arranged at the bent axle bottom the electric motor rotor, be set in the outer electric motor stator iron core of electric motor rotor, be arranged at bent axle top and the moving scroll that connects through capacity eccentric bearing, be arranged at moving scroll top and the intermeshing fixed scroll of moving scroll, be arranged at moving scroll below and the frame that is connected with bent axle through main bearing and be arranged in the housing and be positioned at bottom oil sump; Described moving scroll and the fixed scroll formation compression chamber that is meshing with each other; Form frame oil nest between described moving scroll and the frame; Form drainback passage between described electric motor stator iron core and the inner walls; Described frame is provided with the oil drainage hole that is communicated with frame oil nest, it is characterized in that: the below that is positioned at oil drainage hole on the described frame is provided with the spill port that is communicated with frame oil nest, is provided with pressure difference valve in the spill port; Described frame is set with annular oil sump cover outward; The oil sump cover is made up of annular bottom plate and the annular side plate that is connected in the annular bottom plate outer ring; The frame outer wall of annular bottom plate inwall and spill port below is connected to form the frame oil sump, and the top of annular side plate is provided with the oil outlet that is communicated with drainback passage.

2. scroll compressor according to claim 1 is characterized in that: the top of described oil sump shroud ring shape side plate is connected with frame.