Refrigerant compressor

a compressor and refrigerant technology, applied in the direction of pump components, positive displacement liquid engines, suction devices, etc., can solve the problems of affecting the reliability of the compressor, the leakage of the pressure pipe and the connection pipe, and the inability of the pressure pipe to be attached to the connection pipe to allow satisfactory automated assembly, etc., to achieve the effect of increasing the stability of the pressure section and the robustness of the pressure section

Inactive Publication Date: 2010-09-09
ACC AUSTRIA GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0014]It is therefore the object of the present invention to provide a reliably sealing attachment capability for a pressure pipe to a connection pipe, which is manufactured from metal, of a refrigerant compressor. In particular, the continuous flow of the refrigerant exiting from the piston-cylinder unit is not to be obstructed.

Problems solved by technology

A problem results in this case because of the differing coefficients of thermal expansion of the connection pipe, which is manufactured from metal, typically copper or steel, and the pressure pipe manufactured from plastic, in particular because operating temperatures of approximately 120° C. are reached in the interior of the compressor housing and the danger of leaks between the pressure pipe and the connection pipe arises during cool down of the system to room temperature after the refrigerant compressor has been shut down.
Furthermore, plugging the (tubular or serpentine) pressure pipe onto the connection pipe would not allow satisfactory automated assembly.
Because of this relatively low layer thickness, a pipe connection of this type is not suitable for use in a pressure pipe attachment of refrigerant compressors according to the species, because the coatings could wear in case of relative movements between the pressure pipe and the connection pipe and the danger of a leak would result in the present connection area.

Method used

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Examples

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Embodiment Construction

[0038]FIG. 1 shows a refrigerant compressor in a perspective view having a compressor housing 1 with a suction pipe 2 and a pressure section 3, 6, which is formed by a pressure pipe 3 and a connection pipe 6.

[0039]The suction pipe 2 leads into the interior 8 of the compressor housing 1 and guides a refrigerant coming from a vaporizer (not shown) to a piston-cylinder unit 4 installed on the base plate 16 in the compressor housing 1, in order to compress the refrigerant expanded in the vaporizer again. The compressed refrigerant is guided away from the piston-cylinder unit 4 again and / or guided out of the interior 8 of the compressor housing 1 via the pressure section 3, 6 (see also FIG. 2).

[0040]The section of the pressure section3, 6 leading to the interior of the compressor housing 1, namely the pressure pipe 3 connected to the piston-cylinder unit 4, is shown in FIG. 2. This section is also designated as a “serpentine”. The end area 3c of the pressure pipe 3 is provided for connec...

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Abstract

A refrigerant compressor, comprising a hermetically sealed compressor housing (1), in whose interior (8) a piston-cylinder unit (4) compressing a refrigerant operates, which sucks in refrigerant from outside (9) the compressor housing (1) via a suction pipe (2) and expels the refrigerant under compression via a pressure section (3, 6), formed from a pressure pipe (3) manufactured from plastic and a connection pipe (6) manufactured from metal in the direction of a condenser situated outside (9) the compressor housing (1). In order to enable a reliable sealing connection between the pressure pipe (3) and the connection pipe (6), it is provided that the pressure pipe (3) is connected to form a seal to the connection pipe (6) using a sleeve-shaped connector (5), which is manufactured from plastic and is situated between the pressure pipe (3) and the connection pipe (6), the connection pipe (6) having an at least sectionally constricted end section (6c), facing toward the pressure pipe (3), which secures the connector (5) situated inside the connection pipe (6) in its axial location.

Description

FIELD OF THE INVENTION[0001]The invention relates to a refrigerant compressor, comprising a hermetically sealed compressor housing, in whose interior a piston-cylinder unit which compresses a refrigerant operates, which sucks in refrigerant from outside the compressor housing via a suction pipe and expels the refrigerant under compression via a pressure section, which is formed by a pressure pipe manufactured from plastic and a connection pipe manufactured from metal, in the direction of a condenser situated outside the compressor housing, according to the preamble of Claim 1.[0002]The refrigerating machine process using zeotropic gases has been known per se for some time. The refrigerant is heated by absorbing energy from the space to be cooled in the vaporizer and finally overheated, which results in vaporization, and is compressed to a higher pressure level using a piston-cylinder unit of the refrigerant compressor, where it dissipates heat via a condenser and is conveyed back in...

Claims

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Application Information

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IPC IPC(8): F04B39/12
CPCF04B39/123
InventorKULMER, HERWIG
OwnerACC AUSTRIA GMBH