Suspension spring for refrigeration compressor

A technology of refrigeration compressors and coil springs, applied in the direction of springs/shock absorbers, coil springs, mechanical equipment, etc., can solve the problems of hitting the shell, low spring stiffness, sudden movement, etc., and achieve the effect of reducing dynamic stiffness

Inactive Publication Date: 2012-09-26
WHIRPOOL SA
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Also, the stiffness of the springs should not be too low, otherwise there would be a risk of the motor-compressor assembly including the block 21 striking the housing 10 at the start or stop of the compressor, or even a sudden movement during transport operations. risk
[0010] However, currently developed springs are not effective at reducing the vibrational energy transferred to the refrigeration system with which the compressor is physically associated at frequencies within the operating frequency range of the compressor
In other words, the existing spring design cannot meet the requirements of reducing the noise transmitted to the outside of the compressor, and has a high structural transmission rate in the set frequency spectrum region (the force of the spring is transmitted from one end to the other end with the overall displacement), Undesirable noise when compressors are used in refrigeration installations

Method used

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  • Suspension spring for refrigeration compressor
  • Suspension spring for refrigeration compressor
  • Suspension spring for refrigeration compressor

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Embodiment Construction

[0026] As previously described and illustrated, the helical spring obtained according to the present invention is applied to a refrigeration compressor of the vertical shaft type, as shown in Figure 1, which includes a fixed assembly 20 formed by a block 21, the stator 22 of the electric motor of the compressor is fixed Attached to block 21. The fixing assembly 20 is mounted inside the housing 10 by means of a suspension system comprising helical springs 30 operating in compression, each spring having a lower end 31 and an upper end 32, only one of which is shown in FIG. a spring. A lower end 31 and an upper end 32 of the coil spring are coupled to adjacent portions of the housing 10 and the fixing assembly 20, respectively.

[0027] According to the present invention, for a predetermined size range of one of the spring parameters defined by the spring average diameter D, coil pitch p, spring wire diameter and spring effective height h, in each pair of parameters of the other...

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PUM

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Abstract

The invention relates to a suspension spring for a refrigeration compressor, comprising a shell (10) and a block (21), forming, with the stator (22) of an electric motor, a stationary assembly (20) which is mounted in the interior of the shell (10) by means of an assembly of helical springs (30). The helical spring (30) presents, for a predetermined dimensional range of one of the spring parameters defined by the spring average diameter (D), the pitch (p) of its coils, the spring wire diameter (d) and the active height (h), a ratio between at least two of each pair of the other three parameters, defined to provide, to said helical suspension spring 30, for a desired frequency band, a stiffness corresponding, at minimum, to that of structural reliability of the suspension, and an attenuation in its acoustic transmissibility, in relation to the springs dimensioned only as a function of their suspension structural requirements for a desired frequency band.

Description

technical field [0001] The invention relates to a suspension spring for use in a refrigeration compressor having a vertical crankshaft and being kept suspended in a motor-compressor assembly inside the compressor casing by means of a coil spring operating in compression. Background technique [0002] Generally, refrigeration compressors with a vertical shaft are provided with a spring suspension system for attenuating the vibration energy generated by the motor-compressor assembly (especially by the reciprocating motion of the piston) when the motor-compressor assembly operates at the frequency of the compressor, and is transmitted to the A compressor housing; for restricting movement of the motor-compressor assembly during start-up and stop of the compressor; and for supporting the motor-compressor assembly during transport. [0003] The vibrations generated during normal operation of the compressor are generated by vibrations of the movable masses of the motor-compressor m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B39/00F16F1/06
CPCF04B35/04F16F15/067F16F1/06F04B39/0044F04B39/127F04B39/00F04B39/12
Inventor C·E·旺德拉米C·德佩莱格里尼
Owner WHIRPOOL SA
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