CN2577007Y - External-driving double rotary compressor - Google Patents

Abstract

The utility model relates to an improved external-driving double-rotary compressor, which can effectively solve the problem of long lubrication line, deficient oil supply and short service life. The utility model has the structure that a rotary cylinder is arranged on a machine body and the inner side of a left end cover by a rolling bearing, an integral piston on a hollow crank is connected with the rotary cylinder, and the integral piston is mainly driven by the rotary cylinder. The hollow crank is driven to rotate by the integral piston, an annular oil groove is arranged on the machine body, a screw plug for an oil inlet opening and an oil releasing opening is arranged on the annular oil groove, and the end of the hollow crank is provided with an oil slinger. The utility model has the advantages of novel structure, simplicity, small size, light weight, high efficiency, energy saving, low noise, long life time, convenient maintenance and wide purpose.

Description

The outer pair rotary compressors that drive

(1) technical field

The utility model relates to the two rotary compressors of outer driving of the compression use of a kind of air compressor, refrigeration compressor and other gas mediums, is a kind of novel gas medium compression device.

(2) background technique

At present the gas medium compressor drives two rotary compressors in adopting, and is 93219300.5 semiclosed pair of Rotary Refrigerate Compressor as number of patent application, though it has characteristics such as the high and low noise of gas transmission efficient, but because the two revolutions of interior driving, its complex structure, volume is big, and particularly axial dimension is grown up, the lubricating structure complexity, lubricated circuit is long, and lubricant oil is under-supply, and working life is short, the cost height, so it is applied and has been subjected to considerable restraint.

(3) model utility content

At above-mentioned situation, the order of the utility model is to provide the two revolution of a kind of novel outer driving dynamic formula compressor, be that one of application number 93219300.5 patents are improved greatly, it is long to solve lubricated circuit effectively, the problem that fuel feeding is not enough and working life is short, it is to reinstall the commentaries on classics cylinder body through rolling bearing in body, the conjuncted piston of double-action type is housed on the hollow crankshaft, and the hollow crankshaft end is equipped with disc, on the end left side is arranged about body, right end cap, annular oil groove is arranged on the body, the revolution cylinder body drives conjuncted piston and rotates synchronously, and piston drives also revolution thereupon of hollow crankshaft, piston with cylinder-bore that rotary cylinder body shaft axis hangs down mutually in move back and forth, thereby change displacement, reach air-breathing, compression, the purpose of exhaust, its novel structure, simply, volume is little, and is in light weight, energy-efficient, noise is low, and the life-span is long, and is easy to maintenance, easily produce and apply, good economic and social benefit is arranged.

(4) description of drawings

Fig. 1 is a sectional front view of the present utility model.

Fig. 2 is the utility model distribution working drawing.

Fig. 3 is the utility model mechanical mechanism schematic diagram.

(5) embodiment

Below in conjunction with accompanying drawing structure of the present utility model and working condition are specified.

Provide by Fig. 1, the utility model includes body, changes cylinder body, the conjuncted piston of double-action type, hollow crankshaft and left and right end cap admittedly, the conjuncted piston of double-action type is contained on the hollow crankshaft, left and right end cap is equipped with at the body two ends, revolution cylinder body 5 is loaded on body 8 and left end cap 2 inboards by rolling bearing 3, the conjuncted piston 6 of double-action type on the hollow crankshaft 7 links to each other with revolution cylinder body 5, the conjuncted piston 6 of revolution cylinder body 5 main drivings, conjuncted piston 6 drives hollow crankshaft 7 and rotates, annular oil groove 17 is arranged on the body 8, on hollow crankshaft 7 one ends disc 15 is arranged; In order to guarantee using effect, rubber pad 18 is housed on the plug screw 17, body 8 has O-ring seals 10 at right end cap 11 inwall places, left and right end cap is with end pad 9 is arranged between body 8 terminations, on the right end cap 11 by the screw 14 fastening labyrinth collars 16 that are equipped with, left and right end cap is loaded on body 8 two ends by bolt 2, elastic washer 13, and bearing shell 4 is equipped with at hollow crankshaft 7 two ends, and locating stud 1 is arranged on the left end cap 2.

The utility model by structure as can be seen, former pair of its moving line of rotary compressor is from inside to outside, be that the bent axle master drives piston, piston drives cylinder body again, and the utility model is from outside to inside, cylinder body master driven plunger, piston drives bent axle, variation on its rotational structure, all protect under the consistent prerequisite with the unit time air displacement at the main rotating speed that drives, the outer volume and weight that drives two rotary compressors drives two rotary compressors than bent axle master and reduces half approximately, and cost of material greatly reduces, and the little meaning crankshaft eccentric of volume radius, cylinder bore also greatly reduces, make the axial length of compressor reduce, the vertical shaft type center of gravity reduces, good stability, vibrate little, long service life; Volume reduces, and weight saving is for be to reduce non-load-carrying spatial position crowded vehicle brake air compressor, air condition compressor as far as possible, with regard to more apparent its advantage; And because axial and outside dimension minimizing, a lubricated axle road also shortens dramatically, and it is simple that lubricating structure also becomes, significantly reduced between the contacting of lubricant oil and compressed media emptyly, prolonged lubricant oil working life, can keep the good lubrication performance for a long time, reduce frictional loss, prolong bearing life; Because volume reduces, and is simple in structure, is easy to reduce cost and processing.

It should be appreciated that the utility model has changed the form that former compressor oil groove places the bottom, changes into and establishes annular oil groove on the body, pasta is raise, improve static pressure, increased the heat diffusion area of lubricant oil; Disc with bent axle one end replaces former compressor oil pump, form a left side by the centrifugal force in the bent axle high speed rotating, the pressure reduction in right two chambeies, by being located at a left side, the short oil road of right end cap is connected with the endless oil groove of body, thereby realize the circulation of oil circuit and lubricating of each bearing, the suction of compressor, deploying gas is realized by the revolution cylinder body, the size of its compression ratio ensures by the vent ports position of change body, exhaust ends, piston tip overlaps with the body inwall, surplus crack volume (seeing shown in Figure 2) not, so compressor gas transmission efficient height, the lower end of piston is air-breathing end of a period, at this moment the total kilometres of piston are 4 times of crank radius, and the biography of having broken piston stroke and be 2 times of eccentric arms further makes volume and weight greatly reduce around structure; By shown in Figure 3, when work, slide block is along the guide rod to-and-fro motion, there is not the motion dead point in guide-bar mechanism, overcomes the problem that original guide-bar mechanism has the dead point, and gas transmission efficient reaches more than 90%, improve 15-20% than former compressor, and noise is very little, and is stable and reliable for performance, and purposes is wide, both can be used as air compressor, also can be used as refrigeration compressor, also can be used for the compression of other gas mediums, opened up the wide world of compression applications.

Claims (3)

1, a kind of outer two rotary compressors that drive, include body, the revolution cylinder body, the conjuncted piston of double-action type, a hollow crankshaft and a left side, right end cap, the conjuncted piston of double-action type is contained on the hollow crankshaft, a left side is equipped with at the body two ends, right end cap, it is characterized in that turning round cylinder body (5) and be loaded on body (8) and left end cap (2) inboard by rolling bearing (3), the conjuncted piston of double-action type (6) on the hollow crankshaft (7) links to each other with revolution cylinder body (5), the main conjuncted piston (6) that drives of revolution cylinder body (5), conjuncted piston (6) drives hollow crankshaft and rotates, annular oil groove (19) is arranged on the body (8), have on it into, fuel outlet has disc (15) with plug screw (17) on hollow crankshaft (7) one ends.

2, outer two rotary compressors that drive according to claim 1, it is characterized in that body (8) has O-ring seals (10) at right end cap (11) inwall place, end pad (9) is arranged between the same body of left and right end cap (8) termination, and right end cap (11) is gone up by the fastening labyrinth collar (16) that is equipped with of screw (14).

3, outer two rotary compressors that drive according to claim 1 is characterized in that locating stud (1) is arranged on the left end cap (2).

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