Refrigerant compressor arrangement

Abstract

The invention concerns a refrigerant compressor arrangement with a compressor unit (2) supported in a case by means of springs (12) and comprising at least one bolt (26) with a bolt head (25), a holder (23) being arranged between the compressor unit (2) and at least one spring (12), the holder (23) having in its front a recess, in which the bolt head (25) engages, and which is connected to the spring (12). It is endeavoured to reduce the noise generation during operation of the refrigerant compressor arrangement. For this purpose, the bolt head (25) is arranged in the recess (24) with lateral clearance (34).

Description

CROSS REFERENCE TO RELATED APPLICATION[0001]Applicant hereby claims foreign priority benefits under U.S.C. § 119 from German Patent Application No. 10 2007 048 936.8 filed on Oct. 12, 2007, the contents of which are incorporated by reference herein.FIELD OF THE INVENTION[0002]The invention concerns a refrigerant compressor arrangement with a compressor unit supported in a case by means of springs and comprising at least one bolt with a bolt head, a holder being arranged between the compressor unit and at least one spring, the holder having in its front a recess, in which the bolt head engages, and which is stuck together with the spring.BACKGROUND OF THE INVENTION[0003]Such a refrigerant compressor arrangement is known from, for example, U.S. Pat. No. 4,106,881. The compressor unit has an electric motor with a vertically extending shaft. Above the motor a compressor is arranged, which comprises a piston reciprocating in a cylinder. The piston is driven by the rotary movement of the ...

AI Technical Summary

Benefits of technology

[0008]In the gravity direction, the compressor unit is still supported by means of the holder. The holder transfers the weight forces of the compressor unit to the spring or the springs, when more or even all springs are connected to the compressor unit via corresponding holders. The oscillations occurring in the compressor unit are substantially directed perpendicularly to the active direction of the springs. The springs support the compressor unit in the gravity direction. When, now, a small movability of the compressor unit in relation to the holder is permitted, a vibration of the compressor unit can move the compressor unit a bit, before it starts moving the holder. Accordingly, the movement finally performed by the holder is smaller than it would be with a form-fitting connection between bolt head and holder. A movement with smaller amplitude will transfer a correspondingly smaller amount of energy to the case via the spring. Accordingly, a noise generation will be reduced. This is particularly the case for a frequency range around 800 Hz, which is particularly inconvenient for a user. In this frequency range, the amplitudes of the vibrations are relatively small, so that a lateral clearance does not have to be excessively large. This means that the bolt head is still guided to a sufficient degree in the holder.

[0019]Preferably, the holder is made of an electrically isolating plastic material. Thus, it is avoided that currents from the compressor unit, particularly from the motor of the compressor unit, can reach the case via the holder and the spring. Thus, a danger for third parties is avoided.

Problems solved by technology

This is particularly the case for a frequency range around 800 Hz, which is particularly inconvenient for a user.

Images