TH44329B - Mechanism for controlling the back pressure of the loop traveling in the spiral compressor. - Google Patents

Abstract

DC60 (16/05/56) Low cost, small and lightweight scroll compressors. can prevent compression performance deterioration by using medium pressure between the The suction pressure and discharge pressure are back pressure. There is a small gap in the axial direction between main frame 3 and the thrust riing. ) 8 This little space The second back pressure chamber, C2, is used, and the medium pressure between the suction pressure and discharge pressure is induced into the Second back pressure chamber C2 Low cost, small and lightweight scroll compressors. can prevent compression performance deterioration by using medium pressure between the pressure caused by suction (suction pressure) and pressure caused by discharge (discharge) pressure) is the push back There is a small gap in the axial direction between the main frame 3 and the thrust ring8. It is used as the second back pressure channel, C2, and the medium pressure between the suction pressure and the discharge pressure. pressure is induced into the second back pressure chamber C2.

Claims (8)

1. The spiral compressor consists of The inner division of the closed shell Into a compressed channel Refrigeration containing Fixed scroll) and orbiting scroll and thrusters containing Motor and main frame fixed between each other Cylindrical thrust ring Was placed between the back surface of the plate at the end of Winding coil and main frame and first back pressure channel Which brings the pressure released The surface of the first inner ring has a smaller diameter, the surface of the second inner ring has a larger diameter. And the surface of the third inner circle is diameter Smaller than the skin of the first inner circle Which have common axes and different diameters The difference of The first height formed between the surfaces of the first inner circle. And the surface of the second inner loop and the second height difference Formed between the surfaces of the first inner circle And the surface of the third inner ring and the thrust ring) where the inner diameter is larger than the reverse rotation range of Eccentric shaft of motor First and second seal surfaces Which was taken off the surface of The first and second inner rings, respectively, and the opposite surfaces are laid out. To be opposite With a surface with a difference in height first And a second independent back pressure channel is formed between the opposite surfaces And the texture has the first height difference. The said volute compressor Additional assembly By means of inducing pressure To induce moderate pressure between the pressure generated by the suction And the pressure generated by the release In the second back pressure chamber And the trajectory for controlling the movement of the receiving ring Pressure (thrust ring) formed by making the surface at the bottom of the thrust ring attached to the surface a second height difference. 2. The spiral compressor according to claim 1, here the seal tool for sealing. Air does not enter a back pressure channel between the first and / or second internal circumference surfaces of the main frame. And the first and / or second seal surface of thurst ring. 3. The spiral compressor according to claim 1 or claim 2. Here, the pressure induction device consists of a central pressure induction hole, one end which opens directly to the working chamber closed in the cavity. Compressed refrigerant and another end Which opens directly to the back surface of the orbiting scroll plate, and a continuous hole, one end which opens directly to the central pressure induction hole and Another end which opens directly to the second back pressure channel, on the thrust surface forms on the upper end surface of the thrust ring, the concave groove into the joint axial ring, and the sweet inside and Outer ring A common concentric pattern with an inlet groove is maintained between it, and one end of a consecutive hole opens into a groove. 4. The spiral compressor according to claim 3, here the outer diameter of the inner ring is set on the inside of the outer diameter of the first thrust ring seal. 5.Volume compressors, in accordance with claims 1 to 4, any one of the preceding here, the regulating apparatus For determining the extent of movement in the axial direction of the thrust ring between the thrust ring and the main frame. 6. The spiral compressor according to claim 5. Here, the model control instrument by High contrast surface of the main frame And the opposite surface of the thrust ring. 7. A shell compressor according to one of the previous claims 1 to 5, herein, the flange configuration instrument with a larger diameter than the second seal surface. Of the thrust ring and the locking surface, with the wing portion of the main frame locked. 8. The spiral compressor, in accordance with one of the previous claims 1 to 5, here the inner circumferential surface smaller than the first inner circumference surface, and the instrument. Define form control By making the lower end surface of the thrust ring 8 aligned on the surface. The second high differential forms between the first internal circumferential surface. And perimeter surface Third inner circle