Air cylinders, reciprocating compressors and refrigerators

Abstract

The invention provides a cylinder, a reciprocating compressor and a refrigerator. The cylinder includes a cylinder body and two installation bosses respectively arranged on both sides of the outer peripheral surface of the cylinder body. Each installation boss is provided with a first connecting hole and a The second connection hole, the first connection hole is used to connect with the cylinder head of the reciprocating compressor, the second connection hole is used to connect with the cylinder frame of the reciprocating compressor, the cylinder body is provided with a cylinder hole, and the cylinder is passed through powder metallurgy The process uses metal powder sintering to form an integral body. The cylinder provided by this scheme is integrally formed by sintering metal powder through the powder metallurgy process. Using the above-mentioned production process, the dimensional accuracy of the blank is easy to guarantee, and the accuracy of the cylinder hole and the installation mating surface can meet the requirements after direct molding during the sintering production of the cylinder. The subsequent processing steps of the cylinder are reduced to the greatest extent. Compared with the traditional casting molding scheme, the molding process is simple and efficient, which reduces the process cost and improves the production efficiency of the product.

Description

technical field [0001] The present invention relates to the field of refrigeration equipment, and more specifically, relates to a cylinder, a reciprocating compressor with the above cylinder, and a refrigerator with the above reciprocating compressor. Background technique [0002] In the traditional technology, the cylinder used on the reciprocating compressor is generally cast iron and the frame integrally, that is, the crankcase. Due to the complex and irregular structure of the casting crankcase blank, the process of machining the cylinder bore and the installation mating surface is complex and requires high precision, so the process cost is high; and for different types of compressors, the shape and size of the crankcase are often different. Therefore, the versatility of parts is poor. There are also a few crankcases for reciprocating compressors that use a split type, that is, the cylinder and the frame are separated into separate parts, and the cylinder is also a cast...

AI Technical Summary

Problems solved by technology

Due to the complex and irregular structure of the casting crankcase blank, the process of machining the cylinder bore and the installation mating surface is complex and requires high precision, so the process cost is high; and for different types of compressors, the shape and size of the crankcase are often different. Therefore, the versatility of parts is poor

There are also a few crankcases for reciprocating compressors that use a split type, that is, the cylinder and the frame are separated into separate parts, and the cylinder is also a cast iron casting. Many, the processing technology is still relatively complicated, and when the crankcase adopts a split type, how to ensure the stability of the cylinder installation is also a problem that needs to be solved

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