Vane room unit and rotary compressor having the same

Abstract

A rotary compressor includes a cylinder main body to define an inner space, a vane coupled to the cylinder main body to extend into and out of the inner space, the cylinder main body including a vane room formed at a side of the cylinder main body to guide entrance and exit of the vane, an opening part to extend from the vane room toward an outer surface of the cylinder main body, and a valve accommodating part to extend from the opening part, and having a sectional area larger than the opening part, and a vane room valve seated in the valve accommodating part to open and close the opening part according to pressure of the vane room.

1 . A rotary compressor comprising:
 a cylinder main body to define an inner space;   a vane coupled to the cylinder main body to extend into and out of the inner space, the cylinder main body comprising:
 a vane room formed at a side of the cylinder main body to guide entrance and exit of the vane, 
 an opening part to extend from the vane room toward an outer surface of the cylinder main body, and 
 a valve accommodating part to extend from the opening part, and having a sectional area larger than the opening part; and 
   a vane room valve seated in the valve accommodating part to open and close the opening part according to pressure of the vane room.   
   
   
       2 . The rotary compressor of  claim 1 , further comprising:
 a valve supporting member coupled to the vane room valve to support the vane room valve when the opening part is opened and closed.   
   
   
       3 . The rotary compressor of  claim 2 , wherein the opening part communicates with the vane room to guide supply of lubricant when the opening part is opened. 
   
   
       4 . The rotary compressor of  claim 1 , wherein the vane room valve forcedly contacts the valve accommodating part to close the opening part if a low pressure is formed in the vane room, and opens the opening part if a high pressure is formed in the vane room. 
   
   
       5 . The rotary compressor of  claim 2 , wherein:
 the vane room valve comprises metal, and   the valve supporting member comprises a magnet interposed between the vane room and the vane room valve to attract the vane room valve from an opening position to a closing position.   
   
   
       6 . The rotary compressor of  claim 2 , wherein the valve supporting member comprises:
 a spring coupled to the vane room valve to elastically press the vane room valve from an opening position to a closing position.   
   
   
       7 . The rotary compressor of  claim 2 , wherein the valve supporting member comprises:
 a pin coupling a first side of the vane room valve to the valve accommodating part, and   a second side of the vane room valve is opened and closed.   
   
   
       8 . The rotary compressor of  claim 7 , further comprising:
 a sealing member interposed between the vane room valve and the valve accommodating part.   
   
   
       9 . The rotary compressor of  claim 6 , further comprising:
 a sealing member interposed between the vane room valve and the valve accommodating part.   
   
   
       10 . The rotary compressor of  claim 5 , further comprising:
 a sealing member interposed between the vane room valve and the valve accommodating part.   
   
   
       11 . The rotary compressor of  claim 4 , further comprising:
 a sealing member interposed between the vane room valve and the valve accommodating part.   
   
   
       12 . The rotary compressor of  claim 3 , further comprising:
 a sealing member interposed between the vane room valve and the valve accommodating part.   
   
   
       13 . The rotary compressor of  claim 2 , further comprising:
 a sealing member interposed between the vane room valve and the valve accommodating part.   
   
   
       14 . The rotary compressor of  claim 1 , further comprising:
 a sealing member interposed between the vane room valve and the valve accommodating part.   
   
   
       15 . A vane room unit usable with a rotary compressor comprising a cylinder main body to define an inner space, and a vane coupled to the cylinder main body to go into and out of the inner space, the vane room unit comprising:
 a vane room formed to a side of the cylinder main body to guide entrance and exit of the vane;   an opening part to extend from the vane room toward an outer surface of the cylinder main body;   a valve accommodating part to extend from the opening part, and having a sectional area larger than the opening part; and   a vane room valve seated in the valve accommodating part to open and close the opening part according to pressure of the vane room.   
   
   
       16 . The vane room unit of  claim 15 , further comprising:
 a valve supporting member coupled to the vane room valve to support the vane room valve when the opening part is opened and closed.   
   
   
       17 . A rotary compressor, comprising:
 a cylinder main body defining an inner space; and   a semi-hermetic vane room to guide a movement of a vane between the inner space and the semi-hermetic vane room, the semi-hermetic vane room comprising:
 a vane room opening formed at an outer surface of the cylinder main body, and 
 a vane room access member to regulate opening and closing of the semi-hermetic vane room according to a pressure thereof. 
   
   
   
       18 . The rotary compressor of  claim 17 , wherein the access member comprises:
 a vane room valve seated in the vane room opening to open and close the vane room opening according to a pressure of the vane room; and   a sealing member interposed between the vane room valve and the vane room opening.   
   
   
       19 . The rotary compressor of  claim 17 , wherein the access member regulates a supply of a lubricant to the vane room. 
   
   
       20 . A method to regulate a supply of lubricant to a vane of a rotary compressor, the method comprising:
 opening a seal of a vane room to allow a supply of lubricant to the vane,   wherein the vane is located within the vane room of a main cylinder body to guide a movement of a vane between an inner space defined by the main cylinder body and the semi-hermetic vane room, and the seal is opened or closed according to a pressure of the vane room.   
   
   
       21 . A method to regulate a supply of lubricant to a vane of a rotary compressor, the method comprising:
 opening a seal of a vane room of a main cylinder body by a first pressure level within the vane room to allow supply of lubricant to the vane; and   closing the seal of the vane room of the main cylinder body by a second pressure level within the vane room to prevent the lubricant from entering the vane room.