Compressor relief valve cap and cover

摘要

A relief valve for a compressor includes a valve body, a relief port, a cap and a cover. The relief port is formed in the end of the valve body and refrigerant gas is blown out through the relief port if pressure in the compressor is excessively increased. An engaging portion is formed in the cover so as to be engageable with the valve body such that the cover is prevented from moving relative to the valve body. With the cover is mounted on the valve body through the cap, the relief port is covered by the end of the cap, a first clearance is formed between the ends of the cap and the valve body so as to be in communication with the relief port, and a flowing passage for refrigerant gas blown out through the relief valve is formed from the relief port through the first clearance.

主权项

1. A relief valve for a compressor comprising:
a valve body including an end and a peripheral surface; a relief port formed in the end of the valve body, the relief port through which refrigerant gas is blown out if pressure in the compressor is excessively increased; a cap including an end of said cap, and a peripheral surface of said cap engageable with the peripheral surface of the valve body; and a cover including an end, a peripheral surface engageable with the peripheral surface of the cap and an engaging portion engageable with the valve body such that the cover is prevented from moving relative to the valve body, wherein, when the cover is mounted on the valve body through the cap, the relief port is covered by the end of the cap, such that a first clearance is formed between the end of the cap and the end of the valve body so as to be in communication with the relief port, and a flowing passage for refrigerant gas blown out from the relief valve is formed from the relief port through the first clearance, and wherein the cap is mounted between the cover and the valve body so as to be movable in an axial direction of the valve body due to pressure of refrigerant gas blown out of the relief port, and wherein the cap is movable with respect to the cover while the cover is mounted to the valve body.