Silencer

Abstract

The invention relates to a silencer which comprises a body (2) made from a stainless steel material. A connecting end opening (2) allowing fluid to flow in and out is formed in the body (2). The silencer is characterized in that a connecting sleeve (1) made from a copper material is fixed into the at least one connecting end opening (21) in a welded manner, the connecting sleeve (1) comprises a barrel body part (11), and the outer wall (111) of the barrel body part (11) is matched with the inner wall (211) of the connecting end opening (21). A step face (22) is arranged at the position, on the inner side of the connecting sleeve, of the inner wall of the connecting end opening (21) matched with the barrel body part (11). A locating step part is arranged at the position, relatively close to the step face, of the connecting sleeve. An axial distance is arranged between the step face of the body and the locating step part of the connecting sleeve. The silencer is high in work reliability, universality of products of manufacturers can be achieved, cost is reduced on the premise of guaranteeing the product welding reliability, and the copper pipe deformation problem in the manufacturing process environmental pollution and transportation process is reduced.

Description

technical field [0001] The invention belongs to the technical field of refrigeration, and mainly relates to a muffler. Background technique [0002] The muffler is a basic component in the refrigeration system. It can be used as a liquid receiver in the system to store excess refrigerant in the system; it can also be used as a muffler to allow airflow to pass through and effectively reduce noise. [0003] The generally used muffler includes a cylinder with a larger diameter and an inlet pipe and an outlet pipe with a smaller diameter welded to both ends of the cylinder. The cylinder body, air intake pipe and air outlet pipe of the traditional muffler are all made of copper pipes. The price of copper material is high, which makes the cost of the muffler relatively high. Moreover, the muffler made of copper often needs to be pickled after welding. The process cleans the surface and has a great impact on the environment. [0004] In the Chinese Invention Publication Patent No...

AI Technical Summary

Problems solved by technology

Although such a structure saves part of the cost, in the manufacturing process, the copper air inlet / outlet pipe must be welded to the stainless steel cylinder. Since the welding characteristics of the copper material and the stainless steel material are very different, the process is relatively more difficult. Large, welding quality is not easy to guarantee

In addition, during use, due to the large weld seam located outside the muffler, that is, the surface area of ​​the weld seam that may be in contact with the air is relatively large, which will affect the service life of the muffler

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