CN201884281U - Single-cylinder dual-rotor rotary type refrigerating compressor - Google Patents

Abstract

The utility model discloses a single-cylinder double-rotor rotary refrigeration compressor, which improves the utilization rate of the effective space of the compressed gas, has a compact structure, and at the same time reduces metal consumption, reduces costs and saves energy. The main shaft, the outer rotor and the inner rotor are integrated, and a cylinder integrated with the cylinder head is arranged between the outer rotor and the inner rotor. The inner rotor is tangent to the inner surface of the cylinder and forms a first crescent-shaped space with the inner surface of the cylinder. The outer rotor is tangent to the outer surface of the cylinder and forms a second crescent-shaped space with the outer surface of the cylinder. The outer rotor and the inner rotor have the same rotation center and have an eccentricity with the rotation center of the main shaft; the main shaft, the cylinder and the casing have The same center of rotation; one side of the cylinder is provided with a sliding vane slot along the axial direction, and the sliding vane slot is installed with two ends respectively tangent to the outer surface of the inner rotor and the inner surface of the outer rotor. The sheet divides the first crescent space and the second crescent space into two parts.

Description

Single cylinder dual rotor rotary type refrigeration compressor

Technical field

The utility model relates to a kind of single cylinder dual rotor rotary type refrigeration compressor that utilizes the cylinder both sides as working surface, compact structure, saving material.

Background technique

The present rolling rotor refrigeration compressor that uses, the simple structure of component, few easy workout part, running are steady.But because the space that swept volume is the internal surface of the outer surface of rotor and cylinder to be formed, increase volume space, the diameter of rotor increases, the weight of rotor increases, the metal consumptive material increases, unbalanced revolution moment of inertia strengthens, smoothness of operation descends, need join heavier counterweight, steady with the running that guarantees compressor, the complete machine weight of whole refrigeration compressor increases the weight of, thus, the rolling rotor refrigeration compressor only is applicable to the small-business refrigeration system, can not satisfy the refrigeration system of big air displacement, big refrigerating capacity.In the exploitation of rolling rotor refrigeration compressor, also there is not at present to propose the concrete technological scheme of implementing.

The model utility content

The utility model is in order to overcome deficiency of the prior art; provide a kind of cylinder surfaces and outer surface of utilizing as the single cylinder dual rotor rotary type refrigeration compressor of working surface, compact structure,, reduce investment to reduce the metal consumptive material; the protection environment, energy saving.

The utility model is realized by subordinate's technological scheme;

A kind of single cylinder dual rotor rotary type refrigeration compressor is characterized in that, comprises sucking pipe, outlet pipe, casing, equilibrium block, motor stator, rotor, main shaft, slide plate, external rotor, internal rotor, cylinder cap, upper end cap and cylinder; Cylinder cap is fixedlyed connected with casing, described main shaft, external rotor and internal rotor connect as one by land, be provided with cylinder between external rotor and the internal rotor with the cylinder cap one, the outer surface of internal rotor and the inner surface axial of cylinder are tangent, form first crescent-shaped space between the outer surface of internal rotor and the internal surface of cylinder, land and the cylinder cap, the internal surface of external rotor and the outer surface of cylinder are axially tangent, form second crescent-shaped space between the internal surface of external rotor and the outer surface of cylinder, land and the cylinder cap, main shaft, cylinder and casing have identical gyration center; External rotor and internal rotor have identical gyration center and with the gyration center of main shaft throw of eccentric are arranged; Equilibrium block is fixedly connected on the land of external rotor and internal rotor; One side of cylinder offers the slide plate groove along axial direction, be equipped with in the described slide plate groove two ends respectively with internal rotor outer surface and the tangent slide plate of external rotor internal surface, described slide plate is divided into two-part with first crescent-shaped space and second crescent-shaped space; Seal by sealing gasket between described upper end cap and cylinder cap, and connect by screw; Have on the upper end cap with cylinder cap on the suction port and the oilhole that communicate, be provided with exhaust cavity between upper end cap and the cylinder cap; Be respectively arranged with first vent ports that is communicated with first crescent-shaped space and second vent ports that is communicated with second crescent-shaped space with the symmetrical position of suction port on the cylinder cap, corresponding first vent ports and the second vent ports place are equipped with first outlet valve and second outlet valve respectively on the cylinder cap, and the air outlet of first outlet valve and second outlet valve is communicated with exhaust cavity; Be provided with the eccentric oil duct along axial direction that communicates in main shaft and the internal rotor, eccentric oil duct radially leads to slide plate, and cylinder one side of cylinder cap has the lubricating oil groove that communicates with eccentric oil duct; Described main shaft is connected by connecting key with rotor, and rotor cooperates with motor stator; Sucking pipe pass casing and with casing welding, outlet pipe passes casing and is connected with exhaust cavity and welds with casing.

The lubricating oil groove of cylinder cap is a cross.

The utlity model has following technique effect:

Single cylinder dual rotor rotary type refrigeration compressor of the present utility model, make full use of the useful space that cylinder cooperates with rotor, utilize cylinder surfaces and outer surface as working surface, improve the utilization ratio of the pressurized gas useful space, increased the volumetric efficiency and the performance of compressor, compact structure, simultaneously, reduce metal consumption, reduce cost energy saving.And the rolling rotor refrigeration compressor component of double face cylinder of the present utility model are few, and processing and assembling is convenient, and running gear is few, and it is steady, safe and reliable to turn round.

Description of drawings

Fig. 1 is the schematic representation of the utility model single cylinder dual rotor rotary type refrigeration compressor.

Fig. 2 is the A-A sectional view;

Fig. 3 is the B-B sectional view;

Fig. 4 is the C-C sectional view;

Fig. 5 is the D-D sectional view.

Embodiment

Below in conjunction with the drawings and specific embodiments the utility model is described in detail.

The schematic representation of single cylinder dual rotor rotary type refrigeration compressor of the present utility model such as Fig. 1 comprise sucking pipe 1, outlet pipe 21, casing 2, equilibrium block 3, motor stator 4, rotor 5, main shaft 6, slide plate 8, external rotor 9, internal rotor 10, cylinder cap 11, upper end cap 13, cylinder 14 to shown in Figure 5.Cylinder cap 11 is fixedlyed connected with casing 2, described main shaft 6, external rotor 9 and internal rotor 10 connect as one by land, be provided with cylinder 14 between external rotor 9 and the internal rotor 10 with cylinder cap 11 one, the inner surface axial of the outer surface of internal rotor 10 and cylinder 14 is tangent, the outer surface of internal rotor and the internal surface of cylinder, form first crescent-shaped space 15 between land and the cylinder cap 11, the outer surface of the internal surface of external rotor 9 and cylinder 14 is axially tangent, the outer surface of the internal surface of external rotor 9 and cylinder 14, form second crescent-shaped space 16 between land and the cylinder cap 11, main shaft, casing 2 has identical gyration center with cylinder 14, external rotor 9 and internal rotor 10 have identical gyration center and with the gyration center of main shaft throw of eccentric are arranged, and throw of eccentric is the inside radius of cylinder and the semidiameter of internal rotor.Equilibrium block 3 is fixedly connected on the land of external rotor and internal rotor by screw 27.One side of cylinder 14 offers slide plate groove 25 along axial direction, be equipped with in the described slide plate groove 25 two ends respectively with internal rotor outer surface and the tangent slide plate 8 of external rotor internal surface, slide plate 8 is divided into two-part with first crescent-shaped space 15 and second crescent-shaped space 16, along with external rotor 9, when internal rotor 10 turns to diverse location, slide plate 8 constantly gos deep into first crescent-shaped space 15 or second crescent-shaped space 16 along slide plate groove 25, realize changing the size in two little spaces in first crescent-shaped space 15 or second crescent-shaped space 16, realize air-breathing, compression and exhaust process.11 of described upper end cap 13 and cylinder caps are by the sealing gasket sealing, and screw 12 connections by being positioned at screw hole 17.Have on the upper end cap with cylinder cap on the suction port 22 and the oilhole 28 that communicate, be provided with exhaust cavity 18 between upper end cap and the cylinder cap.Be respectively arranged with first vent ports 24 that is communicated with first crescent-shaped space and second vent ports 26 that is communicated with second crescent-shaped space with the symmetrical position of suction port on the cylinder cap, corresponding first vent ports is equipped with first outlet valve 19 on the cylinder cap, the air outlet that the corresponding second vent ports place is equipped with second outlet valve, 20, the first outlet valves 19 and second outlet valve 20 on the cylinder cap is communicated with exhaust cavity 18.Be provided with the eccentric oil duct 7 along axial direction that communicates in main shaft and the internal rotor, eccentric oil duct 7 radially leads to slide plate 8, and cylinder one side of cylinder cap has the lubricating oil groove 23 that communicates with eccentric oil duct.Described main shaft 6 and rotor 5 are connected by connecting key, and rotor 5 cooperates with motor stator 4.Sucking pipe 1 pass casing 2 and with casing welding, outlet pipe 21 passes casing 2 and is connected with exhaust cavity 18 and welds with casing.

After outlet valve in the exhaust cavity on the cylinder cap 11 18 19 and outlet valve 20 installed, place gasket seal, install by screw 12 and upper end cap 13.Connect with rotor 5 preparing equilibrium block 3 backs on the main shaft 6.

Motor stator 4 is pressed into the bottom of the lower half shell of casing 2, charge into the lubricants capacity that needs, one side of main shaft 6 rotors 5 is cooperated with motor stator 4, in the slide plate groove 25 of cylinder 14, put into slide plate 8, mounted cylinder cap 11 and upper end cap 13 assemblies are inserted, and a side of slide plate 8 is contacted with the internal surface of external rotor 9, an other side contacts with the outer surface of internal rotor 10.Sucking pipe 1 is welded on the upper top cover central authorities of casing 2, and with the upper top cover and the lower half shell welding of casing 2, welding procedure is taken over, and the assembling of compressor complete machine finishes.During main shaft 6 high speed rotating, the lubricant oil that is positioned at casing 2 bottoms flows to relative motion surface that need be lubricated, the matching gap between obturator along the eccentric oil duct 7 that main shaft 6 axial directions are offered by lubricating oil groove 23 under action of centrifugal force, reduce and leak and frictional loss.The space that upper end cap 13 tops and casing are 2 forms air-breathing buffer cavity, the gas refrigeration working medium of low-temp low-pressure that makes suction fully enters the working space of compressor after the buffering in this air-breathing buffer cavity, reduce noise, even entrained liquids also can be in this space evaporation, can not cause the liquid hammer accident, the lubricating oil separation of carrying secretly in the gas refrigeration working medium of the low-temp low-pressure of suction comes out to flow into bottom space through oilhole 28.

Gas refrigeration working medium by the next low-temp low-pressure of vaporizer enters casing 2 internal upper parts of compressor and the air-breathing buffer cavity of upper end cap 13 by sucking pipe 1, the breathing space that suction port 22 on upper end cap 13 successively enters in first crescent-shaped space 15, second crescent-shaped space 16, high temperature and high pressure gas refrigeration working medium after compression through first exhaust port 24 on the cylinder cap 11 back down first outlet valve 19, second exhaust port 26 on cylinder cap 11 backs down second outlet valve 20 and successively discharges, after exhaust cavity 18 fully mixes buffering, enter outlet pipe 21 and discharge compressors.

As shown in Figure 2, main shaft 6 is done and is turned clockwise, the little space of upside of first crescent-shaped space 15 and second crescent-shaped space 16 is air-breathing, the little space compression of bottom, main shaft 6 continues rotation, little space, the top of first crescent-shaped space 15 and second crescent-shaped space 16 is continued air-breathing, gas in the little space, bottom is compressed to pressure is enough to back down corresponding outlet valve 19 and 20, gas is discharged, the little space of upside reaches maximum inhale finishes, and main shaft 6 drives internal rotor and external rotor rotation, turns over suction port 22, enter compression process, so go round and begin again.

The rolling rotor refrigeration compressor of double face cylinder of the present utility model makes full use of two surfaces of cylinder as working surface, work simultaneously, design of part is simple, moving element is few, processing and assembling is convenient, and fragile parts are few, when reducing metal consumptive material, reduction complete machine weight, running steadily, reliable, reduce cost, energy saving, enlarged the using scope of rolling piston refrigeration compressor.

Although relate to a kind of single cylinder dual rotor rotary type refrigeration compressor and carried out special description disclosed with reference to embodiment, embodiment described above is illustrative and not restrictive, under the situation that does not break away from spirit and scope of the present utility model, all variations and modification are all within scope of the present utility model.

Claims (2)

1. A single-cylinder double-rotor rotary refrigeration compressor is characterized in that it comprises a suction pipe, an exhaust pipe, a casing, a balance weight, a motor stator, a motor rotor, a main shaft, sliding vanes, an outer rotor, an inner rotor, Cylinder head, upper end cover and cylinder; the cylinder head is fixedly connected with the casing, the main shaft, the outer rotor and the inner rotor are connected as a whole through a connection plate, and a cylinder integrated with the cylinder head is arranged between the outer rotor and the inner rotor, and the inner rotor The outer surface of the outer rotor is axially tangent to the inner surface of the cylinder, the first crescent-shaped space is formed between the outer surface of the inner rotor and the inner surface of the cylinder, the connection plate and the cylinder head, and the inner surface of the outer rotor is axial to the outer surface of the cylinder Tangential, a second crescent-shaped space is formed between the inner surface of the outer rotor and the outer surface of the cylinder, the connection plate and the cylinder head, the main shaft, cylinder and casing have the same center of rotation; the outer rotor and the inner rotor have the same center of rotation And there is an eccentric distance from the center of rotation of the main shaft; the balance weight is fixedly connected to the connection plate of the outer rotor and the inner rotor; one side of the cylinder is provided with a sliding vane slot along the axis direction, and two ends of the sliding vane slot are installed in the slot. a sliding sheet tangent to the outer surface of the inner rotor and the inner surface of the outer rotor, the sliding sheet divides the first crescent-shaped space and the second crescent-shaped space into two parts; the upper end cover and the cylinder head are sealed by a gasket, It is connected by screws; the upper end cover is provided with a suction hole and an oil hole connected to the cylinder head, and an exhaust chamber is arranged between the upper end cover and the cylinder head; The first exhaust port communicated with the first crescent-shaped space and the second exhaust port communicated with the second crescent-shaped space are respectively installed on the cylinder head corresponding to the first exhaust port and the second exhaust port There are a first exhaust valve and a second exhaust valve, and the air outlets of the first exhaust valve and the second exhaust valve communicate with the exhaust cavity; the main shaft and the inner rotor are provided with an eccentric oil passage along the axial direction that communicates with each other. The eccentric oil passage leads to the sliding plate in the radial direction, and there is a lubricating oil groove communicating with the eccentric oil passage on the cylinder side of the cylinder head; the main shaft and the motor rotor are connected by connecting keys, and the motor rotor cooperates with the motor stator; The pipe passes through the casing and is welded with the casing, and the exhaust pipe passes through the casing and is connected with the exhaust cavity and is welded with the casing. 2. The single-cylinder double-rotor rotary refrigeration compressor according to claim 1, wherein the lubricating oil groove of the cylinder head is cross-shaped.

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