Vortex compressor

Abstract

The purpose of this invention is to improve compressor performance by preventing delay of open of a release valve and reducing operation load in a scroll compressor and provide stable release valve mechanism in mass production. The scroll compressor is provided with a compression mechanism part compressing working fluid in a compression chamber 11 and a hermetic vessel forming a delivery pressure chamber 2f in which compressed working fluid is delivered. A fixed scroll 5 is provided with a release valve device 15 to open a route to make communication of the compression chamber 11 and a delivery pressure chamber 2f when pressure of the compression chamber rises higher than established pressure. The release valve device 15 is provided with a release flow passage 15i, a release valve 15d provided to open and close the release flow passage 15i, a valve pressing body 15h applying elastic pressing force on a release valve, and retainer 16. The valve pressing body 15h includes elastic part getting free under a condition where the release valve closes the release flow passage and getting compressed under a condition where the release valve opens the release flow passage.

Description

technical field [0001] The present invention relates to a scroll compressor, in particular to a scroll compressor provided with a safety valve device for releasing working fluid from a working chamber during overcompression or liquid compression. Background technique [0002] Scroll compressors used in indoor air conditioners and the like are used under a wide range of operating conditions, and cannot avoid operation under overcompression of gas or liquid compression of refrigerant or refrigerating machine oil. Therefore, a scroll compressor having a structure capable of enduring the above conditions is desired. [0003] As a scroll compressor having a structure for preventing overcompression and liquid compression, there is one disclosed in JP-A-2002-221171 (Patent Document 1). From Figure 11 to Figure 13 The scroll compressor is shown to illustrate its mechanism. [0004] Such as Figure 11 As shown, a discharge pressure chamber 21c is formed in an airtight container 2...

AI Technical Summary

Problems solved by technology

If the pressure escape hole 29i is provided by machining, the processing of the sleeve 29g takes time, so that the sleeve becomes a relatively expensive part

[0013] In addition, in the prior art, the assembly force of the spring 29f fixed to the spring fixing part 29h of the sleeve 29g is relatively weak due to no consideration, and has the disadvantage that it is easy to fall off when discharging the overcompressed gas or liquid refrigerant during operation.

[0014] Due to the retractable range of the spring 29f, the size of the valve seat 29b, the safety valve chamber 29c, the safety valve 29e, and the relationship between the natural length and diameter of the spring 29f, the safety valve 29e may be hung on the valve seat 29b and the safety valve chamber Cons between 29c

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