Refrigerant Compressor

Abstract

A hermetically encapsulated refrigerant compressor having a hermetically sealed compressor housing, in whose interior a piston-cylinder unit operates, whose cylinder housing (1) is closed using a valve plate (2) having a pressure hole (10) and a suction hole (16), and a suction channel and a pressure channel are provided. Preferably V-shaped sealing beads (23) or sealing projections (22) are provided in the valve plate (2) and the front face of the component (9) forming the suction channel is equipped along its suction contact edge (17) with sealing projections (22) or sealing beads (23) essentially corresponding to the V-shaped sealing beads (23) or sealing projections (22), the sealing projections (22) being implemented differently from the sealing beads (23) in their geometrical design and / or having a different volume.

Description

[0001]The present invention relates to a hermetically encapsulated refrigerant compressor having a hermetically sealed compressor housing, in whose interior a piston-cylinder unit, which compresses a refrigerant, operates, whose cylinder is closed using a valve plate having a pressure hole and a suction hole, and a suction channel and a pressure channel are provided, via which refrigerant is suctioned via a suction valve into the suction hole and is compressed via a pressure valve from the pressure hole into the pressure channel, the suction channel being formed by a channel-shaped component, which is connected to the valve plate to form a seal along a suction contact edge and connects the suction hole to a preferably provided suction noise damper, according to the preamble of Claim 1 or 2.[0002]Such refrigerant compressors have been well-known for some time and predominantly are used in refrigerators or refrigerated cases. The piece count produced yearly is accordingly high.[0003]A...

AI Technical Summary

Benefits of technology

[0014]It is the object of the present invention to be able to guarantee suppression of outflow of the refrigerant from the channels into the interior of the compressor housing. This is to support a significant reduction of the suction temperature and the expulsion temperature. In particular, it is an object of the present invention to connect the suction and / or pressure channel hermetically sealed to the valve plate reliably.

Problems solved by technology

However, this solution has the disadvantage that there is usually a greater pressure drop during the intake, which reduces the volumetric efficiency and thus the energy efficiency to varying degrees.

Because the gas in the interior of the cylinder is colder than the valve plate over more than 300° crank angle, a heat flow occurs directly from the valve plate or indirectly from the valve plate to the cylinder wall and from there to the gas in the interior of the cylinder, which has a negative effect on the energy efficiency.

Furthermore, the high temperature existing in the cylinder cover also causes a heat flow in the direction of the end section of the suction noise damper, which is enclosed by the cylinder cover, but by which the refrigerant coming from the suction noise damper, which is still to be compressed, is also undesirably heated.

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