초록 ▼

A reversible hermetically sealed rotary compressor for use in a refrigeration system comprising a compressor cylinder, a rotor eccentrically rotatable in the cylinder and a vane dividing the cylinder between high and low pressure sides relative to direction of rotation of the rotor. Suction and disc

A reversible hermetically sealed rotary compressor for use in a refrigeration system comprising a compressor cylinder, a rotor eccentrically rotatable in the cylinder and a vane dividing the cylinder between high and low pressure sides relative to direction of rotation of the rotor. Suction and discharge ports provided for each direction of rotation are automatically switched by changing the direction of rotation of the rotor.

대표청구항 ▼

A reversible hermetically sealed rotary refrigerant compressor comprising: a hermetic casing containing a high pressure refrigerant gas including a first and second opening; a compressor unit positioned in said casing; including a cylinder having an annular chamber, spaced under and lower end walls

A reversible hermetically sealed rotary refrigerant compressor comprising: a hermetic casing containing a high pressure refrigerant gas including a first and second opening; a compressor unit positioned in said casing; including a cylinder having an annular chamber, spaced under and lower end walls connecting with said cylinder and enclosing said annular chamber, a rotor eccentrically rotatable within said chamber with the peripheral surface of said rotor arranged to move progressively into sealing relation with successive portions of said annular chamber; a reversible motor in said casing having a shaft thereon extending into said cylinder for driving said rotor; a radial slot in said cylinder communicating with said chamber; a blade slidably positioned in said radial slot; means biasing said blade against said rotor for following said rotor thereby to drive said chamber into interchangeable high and low pressure sides; a first gas suction port in said cylinder communicating with one side of said chamber; a first gas discharge port in said cylinder communicating with the other side of said chamber; a second gas suction port in said cylinder communicating with the other side of said chamber; a second gas discharge port in said cylinder communicating with said one side of said chamber; a discharge check valve associated with each of said discharge ports dimensioned to prevent reverse flow of refrigerant into the respective side of said chamber; a suction check valve associated with each of said suction ports dimensioned to prevent reverse flow of refrigerant from the respective side of said chamber; first conduit means connecting said first suction port to said one casing opening and said first discharge port to said other casing opening when rotation of said rotor in one direction; second conduit means connecting said second suction port to said other casing opening and said second discharge port to said one casing opening when rotation of said rotor is in the other direction; and valve means communicating with said first and second conduit means being responsive when high pressure refrigerant gas is flowing through one of said conduit means from its associated discharge port for discharging a portion of said high pressure refrigerant gas therefrom into said casing to maintain the interior of said casing at said high pressure while preventing the flow of high pressure discharge gas from entering the suction port through the other of said conduit means.