Expansion valve

Expansion valve

  • CN 1,721,745 A
  • Filed: 07/11/2005
  • Published: 01/18/2006
  • Est. Priority Date: 07/14/2004
  • Status: Active Application
First Claim
Patent Images

1. expansion valve, have:

  • valve body, be formed in the above-mentioned valve body can be by the first passage of high-pressure refrigerant, be formed at the valve chamber that the end is arranged in the above-mentioned first passage, be formed at abreast in the above-mentioned valve body with above-mentioned first passage, the second channel of refrigeration agent that can be by passing out to vaporizer one side, has the throttling passage that is communicated with above-mentioned valve chamber and above-mentioned second channel, be pressed into the throttle part in the above-mentioned valve body, the valve body that disposes in opposite directions with above-mentioned throttle part, be formed in the above-mentioned valve body, can be by the third channel of the refrigeration agent sent from above-mentioned vaporizer one side, operate the working beam of above-mentioned valve body, drive the drive unit of above-mentioned working beam, be communicated with the opening portion of the above-mentioned third channel be formed on the above-mentioned valve body and above-mentioned drive unit and be pressed into the second channel that is communicated with above-mentioned valve body and the opening portion of third channel in, and slidably guide the guide element of above-mentioned working beam freely;

    It is characterized in that;

    Above-mentioned drive unit, have refrigerant temperature that detection sends from above-mentioned vaporizer and the diaphragm that is shifted, with contact and the displacement of above-mentioned diaphragm passed to the limiting part of above-mentioned working beam with above-mentioned diaphragm, opposite side with above-mentioned diaphragm at above-mentioned limiting part is formed with hollow boss cylindraceous, the bottom of above-mentioned working beam embeds the hollow boss of above-mentioned limiting part, the front end of above-mentioned working beam contacts with above-mentioned valve body, has disposed the length adjustment parts that are used to adjust above-mentioned working beam length between the inner of the hollow boss of the bottom of above-mentioned working beam and above-mentioned limiting part.

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