Refrigerant compressor arrangement

Details Refrigerant compressor arrangement Refrigerant compressor arrangement

1997-01-03

1998-09-08

Thorpe, Timothy

Pumps

With muffler acting on pump fluid

417902, 285302, 62296, F04B 3900

Patent

active

058037179

DESCRIPTION:

BRIEF SUMMARY
BACKGROUND OF THE INVENTION

The invention relates to a refrigerant compressor arrangement having a compressor which is arranged in a housing and has a suction connection, the housing being provided with a suction connector which is joined to the suction connection by way of a suction channel.
In a known arrangement of that kind (U.S. Pat. No. 4,969,804), the suction channel is provided in the region of both ends with an O-ring seal and is fixedly inserted in the suction connector and the suction connection respectively. In the suction connection of the compressor there is a slight axial play. However, significant opportunity for the compressor to move with respect to the suction channel is non-existent. Vibrations of the compressor will consequently be transferred to the housing. As a result, undesirable noise occurs, particularly at the start and the end of the compressor operation.
DE 36 33 487 A1 discloses a compressor system in which a tubular sealing element is inserted in the suction connector. At the other end, the sealing element has a conical widened portion which on assembly positions itself against the compressor housing in such a way that the edge of the widened portion surrounds the suction connection. The widened portion is provided with slots. This makes the widened portion resilient in some respects, that is to say, vibrations or oscillations of the compressor can be absorbed to a certain extent. But the slots lead to considerable permanent leakage, so that refrigerant enters the housing, that is to say, the capsule surrounding the compressor, and heats up there. Although the compressor is also able to take in and compress heated refrigerant, in doing so its efficiency decreases.


SUMMARY OF THE INVENTION

The invention is based on the problem of providing a compressor arrangement in which the compressor is able to oscillate relatively freely in the housing without appreciable reduction in efficiency.
In a refrigerant compressor arrangement of the kind mentioned at the outset, this problem is solved in that, at its housing end, the suction channel is in the form of a telescope tube which is capable of being telescoped into the suction connector.
This makes relatively large compressor movements possible. The telescoping arrangement of the telescope tube in the suction connector allows movements of relatively large amplitude, without openings forming in the suction channel. On the contrary, the movements are made possible by the telescope tube sliding to and fro in the suction connector. Furthermore, the flow of refrigerant is then predominantly not in contact with the inner wall of the housing end of the suction connector. The latter is heated by the compressor housing, particularly the first 2-3 cm. If this contact, and consequently dissipation of heat to the refrigerant, can now be avoided, the refrigerant remains colder and the efficiency of the compressor increases.
The suction channel is preferably interrupted at the end of the telescope tube and has there a suction flange against which a telescope tube flange joined to the telescope tube lies. In this construction, the part of the suction channel which must be able to effect the telescoping movement in the suction connector can be suitably designed without the entire suction channel needing to be of corresponding construction. Construction can consequently be kept simple and inexpensive. A satisfactory join between telescope tube and suction channel is ensured by means of the two flanges.
The suction flange and the telescope tube flange are preferably displaceable relative to one another by a predetermined distance before the suction channel emerges into the inside of the housing. The join between telescope tube and suction channel therefore does not even need to be rigid. On the contrary, displacements can be allowed. Although the telescopic guidance of the suction channel in the suction connector allows the compressor to oscillate not only in one direction but to a certain extent allows oscillations also in the other direction, the

REFERENCES:
patent: 3685117 (1972-08-01), Wing et al.
patent: 4160625 (1979-07-01), Dyhr et al.
patent: 5462311 (1995-10-01), Cipolla

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