초록 ▼

A fluid pressure responsive member is shifted in accordance with the pressure differential between two lines either one of which can be a suction line with the other line being a discharge line of a reversible compressor. The fluid pressure responsive member has a pair of arcuate recesses formed the

A fluid pressure responsive member is shifted in accordance with the pressure differential between two lines either one of which can be a suction line with the other line being a discharge line of a reversible compressor. The fluid pressure responsive member has a pair of arcuate recesses formed therein which serve as secondary suction ports which provide fluid communication to the elliptical chamber from suction lines in accordance with the position of the fluid pressure responsive member. Because the porting is responsive to the pressure differential between the two lines, the changeover of the porting is automatic upon the reversal of the operation of the compressor.

대표청구항 ▼

A reversible hermetic compressor unit comprising: shell means having first and second lines connected thereto; rotary compressor means within said shell means; motor means within said shell means for selectively driving said rotary compressor means in a clockwise or a counterclockwise direction; sai

A reversible hermetic compressor unit comprising: shell means having first and second lines connected thereto; rotary compressor means within said shell means; motor means within said shell means for selectively driving said rotary compressor means in a clockwise or a counterclockwise direction; said rotary compressor means including: a compressor chamber with a rotatable multi-vane rotor therein; a first pair of fluid passage means fluidly connected to said first line and said compressor chamber; a second pair of fluid passage means fluidly connected to said second fluid line and said compressor chamber; and means including a pair of supplemental suction ports movable in response to the pressure differential between said first and second lines to position said pair of supplemental suction ports in communication with either said first pair of fluid passage means or said second pair of passage means and said chamber according to which of said first and second pair of fluid passage means are suction lines as determined by the direction in which said motor means drives said rotary compressor means.