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Fully-closed noise reduction structure of refrigeration compressor

A refrigeration compressor, fully enclosed technology, applied in the field of refrigeration compressors, can solve the problems of large noise, high energy excited by valve seat sound, and aggravated vibration of the shell, so as to reduce mechanical noise and reduce the effect of noise transmission

Inactive Publication Date: 2012-08-15
WUHU ABAUR MECHANICAL & ELECTRICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In addition to improving the machining accuracy of parts, mechanical noise cannot be avoided.
like figure 1 As shown, the exhaust valve plate 2 in the prior art is installed in the groove valve plate 1, and then the cold-rolled carbon steel limit plate 3 is installed on the exhaust valve plate 2, and the cold-rolled carbon steel limit plate 3 It is a material with good rigidity. The exhaust valve plate 2 is a kind of high-carbon steel with high hardness and certain rigidity. The exhaust valve plate 2 is knocked against the cold-rolled carbon steel limit On the position plate 3, the sound of hitting the valve seat has high energy and high-frequency broadband characteristics; at the same time, the noise is transmitted through the refrigerant medium and the structure of the pump body, which will form a new noise source, which will aggravate the vibration of the casing and form a more loud noise

Method used

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  • Fully-closed noise reduction structure of refrigeration compressor
  • Fully-closed noise reduction structure of refrigeration compressor
  • Fully-closed noise reduction structure of refrigeration compressor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] like figure 2 , image 3 As shown, the present invention provides a noise reduction structure for a fully enclosed refrigeration compressor. The refrigeration compressor is provided with an exhaust valve, including a valve plate 1, an exhaust valve plate 2 and an exhaust valve plate limiting plate. The exhaust valve plate limiting plate is a cold-rolled carbon steel limiting plate 3, and a damping material layer is provided on the surface of the exhaust valve plate 2 on the cold-rolled carbon steel limiting plate 3. .

[0035] The damping material layer is a sprayed damping layer 4, and the material composition of the sprayed damping layer 4 mainly includes polymer resin.

[0036] An epoxy primer is also mixed in the sprayed damping layer 4 .

[0037] In this embodiment, for the existing valve plate assembly, the rigid contact mode between the original exhaust limiting plate and the valve plate is changed, and a coating of damping material is added on the exhaust li...

Embodiment approach

[0038] The specific implementation method is:

[0039] Using polymer resin, adding appropriate amount of fillers and auxiliary materials to prepare damping paint coating materials, spraying damping paint directly on the side of the exhaust limit plate to limit the lift of the exhaust valve plate to form a sprayed damping layer 4 . Alternatively, the damping paint is used in conjunction with the epoxy primer, and the paint mixed with the epoxy primer is directly sprayed on the side of the exhaust limiting plate that is on the lift limit side of the exhaust valve plate to form a spray damping layer 4 . Constitute a specific coating structure, which can reduce vibration and noise.

[0040] The spraying thickness is controlled at 0.3-0.5mm. like image 3 Assembled in the manner shown: install the exhaust valve plate 2 in the groove valve plate 1, and then install the cold-rolled carbon structure sprayed with a 0.3mm-0.5mm thick spray damping layer 4 on the exhaust valve plate 2 ...

Embodiment 2

[0043] like Figure 4 , Figure 5 As shown, the present invention provides a noise reduction structure for a fully enclosed refrigeration compressor. The refrigeration compressor is provided with an exhaust valve, including a valve plate 1, an exhaust valve plate 2 and an exhaust valve plate limiting plate. The exhaust valve plate limiting plate is a cold-rolled carbon steel limiting plate 3, and a damping material layer is provided on the surface of the exhaust valve plate 2 on the cold-rolled carbon steel limiting plate 3. .

[0044] The damping material layer is a damping alloy cladding 5 .

[0045] The material of the damping alloy cladding 5 is Mn-Cu alloy.

[0046] The exhaust valve limiting plate described in this embodiment is made of damping alloy, which has good vibration damping performance, is not only a structural material, but also has high damping performance, such as Mn-Cu alloys, which have good vibration damping properties. It has high mechanical strength...

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PUM

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Abstract

The invention discloses a fully-closed noise reduction structure of a refrigeration compressor. The refrigeration compressor is provided with an exhaust valve. The exhaust valve consists of a valve plate (1), an exhaust valve block (2) and an exhaust valve block limiting plate, the exhaust valve block limiting plate is a cold-rolled carbon steel limiting plate (3), and a damping material layer is arranged on the surface, facing to the exhaust valve block (2), of the cold-rolled carbon steel limiting plate (3). In the technical scheme, an exhaust valve block impact zone is provided with a damping valve seat material or buffering valve block, sound energy generated by mechanical noise excited by the exhaust valve block can be absorbed and consumed by the damping valve seat material or buffering valve block, impedance matching between the exhaust valve block and the valve seat material is destroyed, noise excited by a noise source is lowered, a noise propagation route is cut off, and knocking mechanical noise of the compressor is lowered.

Description

technical field [0001] The invention belongs to the technical field of refrigeration compressors. Specifically, the present invention relates to a noise reduction structure of a hermetic refrigeration compressor. Background technique [0002] In the current piston compressor, the main noise sources are mechanical noise, aerodynamic noise and electromagnetic noise, and the main cause of electromagnetic noise is the operation of the motor, the fundamental magnetic flux and the high-order harmonic magnetic flux along the radial direction. into the air gap. [0003] The frequency generated by the tangential vibration is generally an integer multiple of the fundamental frequency of the rotor rotation. The frequency is low and the excitation energy is not high. By enhancing the machining accuracy and assembly accuracy of the motor, stator and rotor, the motor noise can generally be ignored; [0004] The aerodynamic noise can be controlled within the required range by increasing ...

Claims

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Application Information

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IPC IPC(8): F04B39/00F04B39/10
Inventor 方泽云林银坤何景云林军谢国家邹敏王丙银赵征阳潘岳凌
Owner WUHU ABAUR MECHANICAL & ELECTRICAL
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