| 摘要 |
<p>851,329. Refrigerating. RANCO Inc. Dec. 24, 1958 [Dec. 30, 1957], No. 41682/58. Class 29 [Also in Group XXIX] In a compression system the functions of the evaporator 20 and condenser 24 are interchanged for heating or defrosting purposes by a fluid pressure actuated piston valve 13 (see Group XXIX) moved to the position shown when a solenoid 80 is energized to connect the alternate end of the casing of valve 13. to the suction line 14 of the compressor 10 through pipe 65, reversing valve 64 (see Group XXIX) operated by the solenoid 80, and pipe 67. De-energization of the solenoid restores the system to its original condition by connecting the other end of valve 13 to the suction line through pipe 62, valve 64 and pipe 67.</p> |
