CN101105174B

CN101105174B - Low-power consumption rolling piston type refrigerating compressor

Info

Publication number: CN101105174B
Application number: CN2007100699340A
Authority: CN
Inventors: 薛亮亮; 薛锋
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-07-06
Filing date: 2007-07-06
Publication date: 2010-08-25
Anticipated expiration: 2027-07-06
Also published as: CN101105174A

Abstract

A rolling reciprocating refrigeration compressor with low power dissipation is provided. Two eccentric wheels sheathed with clamping rings are arranged on main shafts of two cylinders, and fixed at 180 DEG to each other, a partitioning plate is respectively provided on the inner surface of the two cylinders, an inner ring chamber is provided in the partitioning plate, a radial oil guiding hole leading into the inner ring chamber is provided on the lower ring sheet of the inner ring chamber, a plurality of radial leaf blades are provided on the main shaft positioned in the inner ring chamber of the partitioning plate, the annular space between the inner ring surface of the partitioning plate and the main shaft forms a radial oil transferring passage, the outer end surfaces of the two cylinders are respectively arranged with a front cylinder cover and a back cylinder cover of the main shaft bearing, and an elastic doctor blade, an air suction port and an air exhaust port are both equipped on the part higher than lubricant reservoir surface of the bottom of the chassis. The invention successfully solves the problems of rolling reciprocating compressor including poor lubrication, easiness of burn-in due to oil cutoff and difficulty of gas-oil separation. The rolling reciprocating refrigeration has the advantages of simple structure, small volume and lower power dissipation; and can be used in air conditioning apparatus of low-power automobile.

Description

Low-power consumption rolling piston type refrigerating compressor

Technical field

The invention belongs to technical field of refrigeration compressors, particularly relate to a kind of rolling piston type refrigerating compressor.

Background technique

At present, the air conditioner for automobile refrigeration compressor mostly is the swash plate Reciprocting piston compressor greatly, and such compressor arrangement is complicated, the cost height, and power consumption is big, therefore, generally is unwell on small-sized, the minicar that discharge capacity is lower than 1.3 liters and uses.Patent CN2259510Y and CN2270643Y propose with structure simpler respectively, and volume is little, and operation friction power rolling piston type refrigerating compressor little, low in energy consumption is as the air condition compressor of fraction horsepower automobile.But it is high that this compressor exists accuracy of manufacturing to require, the lubricated difficulty of running and easily broken rusting machine, and Oil-gas Separation is difficult and influence refrigerating efficiency and working life, also has slide plate work problems such as to stablize inadequately, thereby is difficult to carry out popularization.And described two patents do not propose effective corrective measure to the problem of above-mentioned existence, and therefore, not seeing as yet on the market so far has the air conditioner refrigerating compressor that is successfully applied on the fraction horsepower automobile.

Summary of the invention

Purpose of the present invention is to be refrigeration plant, particularly automobile with small output volumn air conditioner, and a kind of suitable low-power consumption rolling piston type refrigerating compressor is provided.

Technical solution of the present invention is: it comprises casing, cylinder, main shaft, be positioned at the eccentric wheel of installing on the cylinder inner main axis section that is set with pressure ring, be installed on the cylinder shell, its front end contacts closely with the pressure ring appearance and cylinder inner cavity is separated into air aspiration cavity and the elastic doctor blade that compresses air cavity, and relief opening and the outlet valve offered on intakeport of offering on the air aspiration cavity casing wall and the compression air cavity casing wall, and two cylinders are installed in the described casing, the eccentric wheel of installing on the two cylinder inner main axis that is set with pressure ring staggers 180 ° mutually, be provided with dividing plate between the interior edge face of two cylinders, this dividing plate is provided with interior ring cavity, offer the radially oil guiding hole of ring cavity in feeding on the girth sheets of its underpart, the main shaft that is positioned at the dividing plate ring cavity is provided with some radial blades, annular space between dividing plate inner ring face and the main shaft constitutes axial oil transportation road, the exterior edge face of two cylinders is separately installed with front end housing and the back cylinder cover that is provided with main shaft bearing, the elastic doctor blade of cylinder, intakeport and relief opening all are arranged on and are higher than on the above position of bottom of shell lubricating oil bath liquid level.

The invention has the beneficial effects as follows: owing to adopted two oil cylinder central diaphragm structures, and in central diaphragm, be provided with micro-vacuum oil suction ring cavity, then to both sides cylinder and main shaft delivery cycle lubricant oil continuously, thereby solved the difficult problem of the easily broken rusting machine of rolling piston compressor poor lubrication; Simultaneously tradition is set in place to change into and is positioned at casing middle part, thereby avoided the cylinder intake and exhaust to bring the problem of Oil-gas Separation difficulty by the bottom of shell lubricating oil bath in cylinder intakeport, the relief opening of bottom of shell.The present invention is simple and compact for structure, volume is little, and it is reliable and stable, low in energy consumption to turn round.Through practical test, this machine-processed cold reaches 3000 watt-hours, and power consumption is 1 kilowatt.Therefore, successfully provide the refrigeration compressor that is suitable for for the fraction horsepower automotive fittings air conditioner of 1.3 liter capacities.

Description of drawings

Fig. 1 is the overall sectional structure schematic representation of the present invention.

Fig. 2 is a broken section structural representation of the present invention.

Fig. 3 is an A-A cross-sectional view among Fig. 1.

Fig. 4 is a B-B cross-sectional view among Fig. 1.

Embodiment

The invention will be further described with embodiment below in conjunction with accompanying drawing.

This machine core 27 is made up of the dividing plate 7 between two cylinders 16, the two cylinder interior edge faces and the front end housing 17 on the cylinder exterior edge face and the back cylinder cover 9 on another cylinder exterior edge face, and links into an integrated entity by stay bolt 29; Main shaft 1 penetrates movement 27 from front end housing 17 centers, thereafter the end is installed on the radial bearing 10 and cod 11 at back cylinder cover 9 centers, front end housing 17 centers are provided with the radial bearing 10 and cod 11 of main shaft 1 too, be positioned on the main shaft section of two cylinders 16 and be separately installed with the eccentric wheel 21 that is set with pressure ring 5, be provided with radial spring pin 30 between main shaft 1 and the eccentric wheel 21, the both ends of the surface of pressure ring 5 are joined with a sidewall of cylinder and an outer wall of dividing plate 7 respectively, also offer some lightening holes 35 on the pressure ring 5; The throw of eccentric C of eccentric wheel 21 is preferably 6.0～6.5mm; Cylinder block adopts the good CrMoCu material of wear-resisting property, and pressure ring is then selected good thermal stability, CrWMn material that expansion coefficient is little for use, thereby has guaranteed the reliability of cylinder operation; The cylinder body of cylinder 16 is provided with an outer protuberantia 31, in its grand groove, spring 14 is installed, the middle leading portion of spring 14 is socketed with the elastic doctor blade 13 that its front end contacts cylinder pressure ring 5 closely, elastic doctor blade 13 is separated into air aspiration cavity 34 and compression air cavity 36 with cylinder, on the casing wall of air aspiration cavity, offer intakeport 33 near the protuberantia place, intakeport 33 air feed channel 20 interior with being arranged at cylinder wall and front end housing is connected, on the casing wall of compression air cavity, offer relief opening 32 near the protuberantia place, at outer wall of cylinder block, the relief opening position is provided with valve seat 24, and the reed valve plate 25 that covers the valve seat mouth is installed, what be provided with reed valve plate simultaneously opens limiting board 26, and high pressure air drains in the exhaust chamber 19 between casing and the movement; Dividing plate 7 is the hollow sheetings with interior ring cavity 6 that are made of concave-board and cover plate 28 that match with cylinder 16 sagittal planes, be positioned on the main shaft of dividing plate ring cavity 6 and be evenly equipped with some radial blades 15, offer the radially oil guiding hole 37 of ring cavity in feeding on the girth sheets of partition groove plate bottom, the annular space 38 between dividing plate inner ring face and the main shaft constitutes axial oil transportation road.The above-mentioned movement that assembles 27 is installed in the casing 12, and intakeport 33, the relief opening 32 of cylinder in the movement all are positioned at more than the liquid level of bottom of shell lubricating oil bath 39, oil guiding hole 37 lower end mouth of dividing plate 7 are then in the floodlubrication oil sump 39; On casing 12 ports end cap 3 is installed, end cap 3 is provided with the air inlet vallecular cavity and combines the back with front end housing forms air-inlet cavity 22, its top is provided with the air input joint 4 that is connected with air-inlet cavity 22, and end cap 3 is provided with casing, front end housing junction surface and is provided with main shaft axial sealing ring 23 in O-ring seals 18, the end cap; The opening of the air feed channel 20 in the front end housing is arranged in air-inlet cavity 22; Casing 12 rearward end tops be provided with casing, movement between the high pressure air out splice going splice 8 that is connected of exhaust chamber 19; The shaft end that main shaft 1 stretches out shell end cover 3 is equipped with the transmission pulley 2 of being with clutch.

Claims

1. low-power consumption rolling piston type refrigerating compressor, comprise casing (12), cylinder (16), main shaft (1), be positioned at the eccentric wheel of installing on the cylinder inner main axis section that is set with pressure ring (5) (21), be installed on the cylinder shell, its front end contacts closely with pressure ring (5) appearance and cylinder inner cavity is separated into air aspiration cavity (34) and the elastic doctor blade (13) that compresses air cavity (36), and relief opening (32) and the outlet valve offered on intakeport of offering on the air aspiration cavity casing wall (33) and the compression air cavity casing wall, it is characterized in that being equipped with in the casing (12) two cylinders, the eccentric wheel of installing on two cylinders (16) inner main axis that is set with pressure ring (5) (21) staggers 180 ° mutually, be provided with dividing plate (7) between the interior edge face of two cylinders (16), this dividing plate is provided with interior ring cavity (6), offer the radially oil guiding hole (38) of ring cavity in feeding on the girth sheets of its underpart, the main shaft that is positioned at dividing plate ring cavity (6) is provided with some radial blades (15), annular space between dividing plate inner ring face and the main shaft (38) constitutes axial oil transportation road, the exterior edge face of two cylinders (16) is separately installed with the front end housing (17) and back cylinder cover (9) that is provided with main shaft bearing, the elastic doctor blade of cylinder (13), intakeport (33) and relief opening (32) all are arranged on and are higher than on the above position of bottom of shell lubricating oil bath (39) liquid level.

2. by the described low-power consumption rolling piston type refrigerating compressor of claim 1, it is characterized in that front end housing (17), back cylinder cover (9) center are respectively equipped with the radial bearing (10) and cod (11) that main shaft (1) is installed.

3. by the described low-power consumption rolling piston type refrigerating compressor of claim 1, it is characterized in that the throw of eccentric C of the eccentric wheel (21) on the cylinder main shaft is 6.0～6.5mm.

4. by the described low-power consumption rolling piston type refrigerating compressor of claim 1, it is characterized in that the cylinder body of cylinder (16) is provided with an outer protuberantia (31), spring (14) is installed in its grand groove, the middle leading portion of spring (14) is socketed with described elastic doctor blade (13).

5. by the described low-power consumption rolling piston type refrigerating compressor of claim 1, it is characterized in that being provided with valve seat (24) on the position at cylinder (16) outer wall of cylinder block, relief opening (32), and the reed valve plate (25) that covers the valve seat mouth is installed, what be provided with reed valve plate simultaneously opens limiting board (26).

6. by the described low-power consumption rolling piston type refrigerating compressor of claim 1, it is characterized in that the cylinder block of cylinder (16) adopts the CrMoCu material.

7. by the described low-power consumption rolling piston type refrigerating compressor of claim 1, it is characterized in that pressure ring (5) adopts the CrWMn material.