GB2111595A - A rotary gas compressor - Google Patents

Abstract

The compressor comprises a stationary hollow cylinder and a rotor 40 located within the cylinder, the radially outer peripheral surface of the rotor having a trough portion(s) and a crest portion(s) contiguous therewith and the said surface together with the inner surface of the cylinder defining a chamber(s) for the working fluid. An inlet(s) 34 and an outlet(s) 31 for said fluid are separated by an intermedial "component(s)" e.g. a vane 33, the component(s) being resiliently biased so as to engage said surface of the rotor so that when the rotor rotates working fluid is displaced from the inlet(s) to the outlet(s) by the crest portion(s). <IMAGE>

Description

SPECIFICATION A rotary compressor BACKGROUND OF THE INVENTION The present invention relates to a compressor, and more particularly to a rotary compressor having a plurality of wavy compressing shaft formed on its rotor.

In general the freon gas compressor for automobiles is driven by means of belt pulley connected to the engine, and therefore the number of revolutions of the driving rotor is apt to be influenced by the automobile traveling conditions, and due to engine's driving its load is undoubtedly increased, resulting in the reduction of vehicle horsepower, whereas this is the main reason why air-conditioners could not be installed on general vehicles of lower horsepower.

Furthermore, compressors are divided into two types: reciprocal and rotary, in the former the compression being almost adiabatic, so the gases compressed having still to a certain heat transferred to the surroundings and needing cooling from outside. The disadvantage of this type of compressor is of power-wasting. And as the puff tube contracts the pressure skyrockets and some safety devices are needed. In addition, there are many mechanical contact parts, efficiency being low, and there is shock in the puffy flow, provision of an air chamber being needed, or'a risk of the puff gases mixed with the lubricant oil. In the latter, although there are many advantages yet with difficulties of capacity and adjustments, and the disadvantage of high noises.

SUMMARY OF THE INVENTION The object of the present invention is to eliminate the disadvantages of existing cooling compressor and to provide a kind of rotary compressor with a wavy compressing shaft, expecting by using a D.C. motor or current of a lower voltage to drive a compressing shaft of a wavy curvohedron rotor, and hereby to compress the gases inbetween the inner wall of a cylindrical stator and the outer wall of compressing shaft of a curvohedron rotor.

Another object of the present invention is to provide a wavy rotary compressor capable of being used for an automobile air-conditioner, it can be directly connected with the batteries and does not have to drive with the belt pulley of the engine, and therefore its RPM is not influenced by the automobile's traveling conditions.

Still another object of the present invention is to provide a rotary compressor with a wavy compressing shaft, wherein the freon efficiency is highly enhanced due to lower revolutions and sparse mechanical contacts.

BRIEF DESCRIPTION OF THE DRAWINGS Other objects and advantages of the invention will become apparent during the following discussion of the accompanying drawings, wherein: FIG. 1 is a partially cross-sectional perspective view of an embodiment of a wavy rotary compressor according to the present invention.

FIG. 2 is an enlarged cross-sectional view taken on line A-A in FIG. 1.

FIG. 3 is an explosive perspective view of the above embodiment.

DETAILED DESCRIPTION OF THE DRAWINGS Before going to discuss the construction of the present invention, it would be in time to state that in principle the corrugated rotor according to the present invention comprises at least more than three wavy bodies and arched bodies as preference, however, for the convenience of description a rotor with four wavy bodies is used as the embodiment of the invention for explanation.

Reference is made to appended drawings, the wavy rotary compressor according to the present invention comprises a D.C. motor 10, a speedreducing gear device 20, a cylindrical stator 30 and a quarterly wavy rotor 40. The direct current from batteries is utilized to directly drive the motor 10, which rotates by the torque produced through the speed reducer 20; at the motor spindle is pivotly connected a rotor with a wavy compressing shaft 40, making it rotatably mounted inside the cylindrical stator 30; and a fixing seat 60 is provided between the stator 30 and the four corners' edges of a sealed housing 50 of the compressor, and a compression vent tunnels 61 (see FIG. 2) is formed by along the contacting surface of the longitudinal fixing seat 60 and the compression outlet hole 31 provided at the outer wall of stator 30, said vent tunnels 61 being separated with one another and joined together at a conveying tube (not shown in the drawings).

As shown in FIG. 2, the outer peripheral wall of the stator 3 are provided four slots 32, in which four sets of movable gas pressure blocking means 33, are movably mounted and on two lateral sides of each said slots 32 is provided in series inlet holes 34 and outlet holes 31; on the outer surface of outlet hole 31 is fitted a blocking spring members 311 to prevent the back-flow of compressive gases; the round openings at the rear end of movable gas pressure blocking means 33 are respectively fitted through with secured pin 332 wound with spring 331, making the gas pressure blocking means 33, connected through to the fixing seat 60, extensible and contractible in compressive elasticity along with the wavy surface 41 of the rotor, when the rotor 40 rotates, since the wavy surface 41 contacts with the four movable gas pressure blocking means 33 imbeded into the outer wall of stator 30, so that the gases can thus be compressed between the stator 30 and the arched space of wavy wall of the compressing shaft 41, and gas incoming and exhausting actions are effected through the inlet and outlet holes in series at two lateral sides of the gas compressure blocking means 33 under nonleaking conditions; the wavy rotor 40 rotates smoothly under very low resistance, and therefore it can be driven by utilizing low-voltage current or D.C. power supply. If used as a cooling compressor for an automobile it can be directly connected to storage batteries as a power supply for driving the motor, hence the number of revolutions of driving rotor is not influenced by the automobile's traveling condition.

As for the manner of assembly, please refer to FIG. 1 and 3, the D.C. motor 10 and the speed reducer 20 are overslipped into the motor housing 11 and closely contact with the compressor housing 50, at four corners inside said housing 50 are fitted longitudinally extending fixing seats 60, which are cut oblique slots 62 respectively, and in the transversal slot 32 of the cylinder is movably inserted movable gas pressure blocking means 33 to fit the wavy rotor 40 with compressing shaft 40 through to the inside of cylindrical stator 30, so that a same space volume is formed between the inner surface of stator 30 and the wall of compressing shaft 41, and when the stator 30 is received into the compressor housing 50 the four gas pressure blocking means 33 pass through slots 62 retained by fixing seats 60 which is connected to the four corners inside the housing, making the spring secured pin 332 go against the slot bottom to impart elasticity to the gas pressure blocking means in the slot 62. When the rotor with compressing shaft 40 rotates, its wavy shaft wall 41 contacts closely with the gas pressure blocking means 33, follows the revolution of the compressing shaft 40, and forces the compressed air to the outlet hole 31, exhausting altogether along the compressive vent hole 311.

Claims (6)

1. A rotary compressor comprising a cylindrical member and a co-operating member located within the cylindrical member, at least one of the members being rotatable relative to the other of the members on an axis extending longitudinally of the cylindrical member and the members having opposite facing first and second surfaces, the first surface having a trough portion and a crest portion contiguous therewith and the. first surface with the second surface defining a chamber, the chamber having an inlet for fluid entering therethrough to the chamber and an outlet spaced from the inlet in a direction of rotation for fluid expelled therethrough from the chamber and the second surface having a component extending therefrom, said component being resiliently biased so as to engage the first surface whereby during relative movement of the members, the component and the crest portion move towards one another causing fluid contained in the chamber to be swept through the outlet.

2. A rotary compressor with wavy compressing shaft comprising: a driving means, rotor means with a wavy compressive shaft pivotly connected to said driving means and a cylindrical stator means rotatably receiving said rotor means within its inner space, outside which a plurality of movable gas blocking means and their associated gas inlet holes and puffy outlet holes are provided, wherein during the operation, the gases in an arched space between the outer peripheral surface of said rotor means and the inner peripheral surface of said stator means are effectively sucked in and puffed out under non-leaking conditions to achieve the compression of Freon (Registered Trade Mark) and the like.

3. A compressor as claimed in claim 2, wherein a plurality of longitudinal fixing seats are fitted at the inside corners of the compressor housing, said fixing seats are respectively formed oblique slot means for receiving their corresponding gas pressure blocking means and enabling the front end of said blocking means to extend through the outer peripheral surface of the stator means and to closely contact a wavy outer surface of said rotor means to make said blocking means being capable of having elasticity of extension and contraction along said wavy outer peripheral surface of said rotor means.-

4. A compressor as claimed in claim 2, wherein a plurality of compressive venting holes are provided at the faces of said fixing seats corresponding to the compressive outlet holes of the stator means and on the outer surface of said compressive outlet holes are provided with a blocking spring member to prevent said compressive gases from reversal flow.

5. A compressor as claimed in claim 2, wherein between the two lateral end of said blocking means are formed with inlet and outlet gas holes and said gas inlet holes are located at the offset position of said fixing seat.

6. A rotary compressor substantially as hereinbefore described and as illustrated in the accompanying drawings.