Refrigerator
专利汇可以提供Refrigerator专利检索，专利查询，专利分析的服务。并且PURPOSE: To avoid the damage due to the liq. compression at the starting of a scroll compressor by opening a normally closed valve provided in a fixed scroll-side intermediate compression chamber by the internal pressure in this compression chamber in the case of stating of the scroll compressor to escape a liq. refrigerant to a refrigerant piping at the upstream of a throttle unit.
CONSTITUTION: In case a scroll compressor 1 starts with a liq. refrigerant stagnating in a compression chamber 12, the refrigerant is compressed to bring about an abnormally high pressure in an intermediate compression chamber 12b having a closed structure. When the pressure in this chamber 12b becomes higher than the sum of a force of valve retaining spring 16b for retaining a valve element 16a and pressure in a refrigerant piping 17, a normally closed valve 16 opens. The refrigerant in the intermediate compression chamber 12b flows because of the pressure difference from an opening 15 via the piping 17, joins in a refrigerant piping 6a connecting a condenser 2 to a throttle unit 3 to an evaporator 4 and flows to the throttle unit 3. Thereby the pressure in the intermediate compression chamber 12b never exceeds a limit pressure, hence no excessive force is exerted on a bearing, etc., of the scroll compressor 1 and this compressor smoothly starts, without being damaged.
COPYRIGHT: (C)1989,JPO，下面是Refrigerator专利的具体信息内容。
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