| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To inhibit overheat of a refrigerant in a refrigerant suction chamber of a cylinder head and a refrigerant sucked into a cylinder for improving volumetric efficiency of a compressor without causing weight increase, complication of a manufacturing process, and manufacturing cost increase. <P>SOLUTION: This cylinder head of the compressor made of aluminum material has the refrigerant suction chamber and a refrigerant delivery chamber defined by a bulkhead. A surface layer of the bulkhead itself forming at least one surface of at least the bulkhead is modified to oxide film layer by oxidation treatment of the aluminum material. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
