CN201344128Y

CN201344128Y - Vane of rolling rotor compressor

Info

Publication number: CN201344128Y
Application number: CNU2008201582067U
Authority: CN
Inventors: 张利
Original assignee: Shanghai Hitachi Household Appliance Co Ltd
Current assignee: Shanghai Hitachi Household Appliance Co Ltd
Priority date: 2008-12-30
Filing date: 2008-12-30
Publication date: 2009-11-11
Anticipated expiration: 2018-12-30

Abstract

The utility model provides a vane of a rolling rotor compressor, wherein at least one end surface of the vane is provided with a groove extending in the same direction as the vane moves, so as form a labyrinth cavity. By taking the advantage of the labyrinth seal principle that the gas flows with high speed from the high pressure side through the throttle clearance and then into the labyrinth cavity for expansion so as to consume the velocity energy produced when the gas flows through the clearance and reduce the leakage of the gas, the utility model reduces the leakage of the gas and improves the working efficiency of the compressor remarkably.

Description

A kind of blade of rolling rotor type compressor

Technical field

The utility model relates to a kind of blade of rolling rotor type compressor, especially can reduce the rolling rotor type compressor blade that gas coming through leaks, improves compressor operating efficient relevant for a kind of.

Background technique

Fig. 1,2 is depicted as a kind of traditional compressor 9 and refrigerant leakage situation schematic representation thereof.This compressor with rolling rotor 9 comprises a housing 90 and is contained in active chamber in the housing 90.Active chamber comprises compositions such as upper cylinder cover 911, following cylinder cap 912, cylinder 92, bent axle 93, rotor 94, blade 95, spring 96.Upper cylinder cover 911, following cylinder cap 912, cylinder 92 are assembled together by bolt 913.Blade 95 places in the blade groove 921 on the cylinder 92, and active chamber is provided with suction port 97 and relief opening 98.Rotor 94 is positioned in the cylinder 92 and by eccentric crankshaft 93 and drives, and blade 95 heads contact with rotor 94 surfaces.In the working procedure of compressor, rotor 94 surfaces, blade 95 surfaces, cylinder 92 internal surfaces, on/following cylinder cap 911,912 end faces are cylinder 92 inner space separated into two parts: air aspiration cavity 922 and compression chamber 923.Along with the rotation of bent axle 93, rotor 94 moves in cylinder 92, and the volume of air aspiration cavity 922 increases gradually, and the volume of compression chamber 923 reduces gradually, and the pressure of gas increases gradually in the compressor, is discharged by relief opening 98 after pressure reaches exhaust pressure.Blade 95 is along 92 blade groove 921 to-and-fro motion on the cylinder, on it/certain clearance arranging between the end face of lower end surface and upper and lower cylinder cap 911,912, the working medium of compression chamber 923 can be leaked to air aspiration cavity by this gap like this.The working medium of compressor 9 each leakage way 99 in compressor 9 chambeies as shown in Figure 2.Among Fig. 1,2 blade 95 of compressor with rolling rotor 9 as shown in Figure 3, the both sides end face 951 of blade 95 is the plane, simultaneously cylinder cap 91 also is the plane with the position that blade 95 end faces 951 cooperate.Leaf side leakage way 991 is to be caused by the gap between the end face 951 of blade 95 and 91 two substantially parallel flat boards of cylinder cap.In leaf side leakage way 991, the high-pressure working medium of compression chamber 923 can leak in the air aspiration cavity 922.Leak the gettering quantity that can influence compressor 9 on the one hand, also can influence the indicated power of compressor 9 simultaneously, so reduce to leak the working efficiency that can significantly improve compressor.

Summary of the invention

Technical problem to be solved in the utility model is to reduce the refrigerant leakage amount of leaf side leakage way.

In order to solve the problems of the technologies described above, the utility model provides a kind of blade of rolling rotor type compressor, offers a groove identical with this blade movement direction at least one end face of this blade, forms chamber, a labyrinth.

The beneficial effect that the utility model brought is by adopting the principle of labyrinth seal, gas from the high pressure side with high speed flow through throttle clearance, enter the chamber, labyrinth again and expand, the speed energy that forms when coming spent gas to flow through the gap with this reduces the leakage of gas.Reduce to leak the working efficiency that can significantly improve compressor.

Description of drawings

Fig. 1 is a kind of part cross-sectional schematic of traditional compressor.

Fig. 2 is a traditional compressor refrigerant leakage situation schematic representation shown in Figure 1.

Fig. 3 is the amplification schematic perspective view of traditional compressor blade shown in Fig. 1,2.

A kind of preferred embodiment compressor of Fig. 4 the utility model schematic representation of laterally working.

Fig. 5 is the amplification schematic perspective view of the utility model preferred embodiment blade shown in Figure 3.And,

Fig. 6 is that the utility model preferred embodiment middle period shown in Figure 3 side canal leaks the situation schematic representation.

Embodiment

With reference to figure 4,5,6, wherein Figure 4 shows that laterally work schematic representation of a kind of preferred embodiment compressor 1 of the utility model.Compressor with rolling rotor 1 includes blade that rotor 14 that a cylinder 12, one be contained in cylinder 12 inside, one can slide along the blade groove on the cylinder 12 121 15, air aspiration cavity 122, compression chamber 123, an intakeport 17 that is communicated with air aspiration cavity 122 and a relief opening 18 that is communicated with compression chamber 123.Because between the active chamber or active chamber and cylinder 12 inside exist pressure reduction, on high-tension side working medium 2 can leak to low voltage side under the effect of this pressure reduction.The working medium 2 of compressor 1 each leakage way 19 in compressor 1 chamber as shown in Figure 4.The blade 15 of compressor with rolling rotor 1 offers a groove 152 identical with blade 15 moving direction as shown in Figure 5 among Fig. 4 at least one end face 151 of blade 15, forms chamber, a labyrinth.Its leakage way shape as shown in Figure 6 at this moment.In the preferred embodiment of the present utility model shown in Fig. 4 and Fig. 5, respectively offer a groove 152 on two opposing end surfaces 151 of blade 15.The utility model has adopted the principle of labyrinth seal, promptly gas from the high pressure side with high speed flow through throttle clearance, enter the chamber, labyrinth again and expand, the speed energy that forms when coming spent gas to flow through the gap with this reduces the leakage of gas.

Known to those skilled in the art, drawings and Examples of the present utility model are only for illustrating that function of the present utility model, structure and principle should not become the restriction in the utility model understanding; Simultaneously, the purpose of this utility model all realizes.The foregoing description may be had some change under the situation that does not break away from the utility model principle, so protection of the present utility model should be as the criterion with the scope described in claims.

Claims

1. the blade (15) of a rolling rotor type compressor (1) is characterized in that: offer a groove (152) identical with described blade (15) moving direction at least one end face (151) of described blade (15).

2. the blade (15) of rolling rotor type compressor as claimed in claim 1 (1) is characterized in that respectively offering a groove (152) identical with described blade (15) moving direction on two opposing end surfaces (151) of described blade (15).