Multi-cylinder rotary type compressor

Abstract

A multi-cylinder rotary type compressor designed to reduce intake loss and noise. The multi-cylinder compressor includes first and second compressing compartments partitioned from each other; first and second intake ports communicated with the first and second compressing compartments, respectively; and a communication hole located adjacent to the first and second intake ports to communicate the first compressing compartment with the second compressing compartment.

1 . A multi-cylinder rotary type compressor, comprising: first and second compressing compartments partitioned from each other; first and second intake ports communicated with the first and second compressing compartments, respectively; and a communication hole located adjacent to the first and second intake ports to communicate the first compressing compartment with the second compressing compartment.  
   
   
       2 . The compressor according to  claim 1 , further comprising: first and second cavities recessed a predetermined depth on an inner surface of the respective first and second compressing compartments so as to be adjacent to the communication hole.  
   
   
       3 . The compressor according to  claim 2 , wherein the first and second cavities are located opposite to the communication hole.  
   
   
       4 . The compressor according to  claim 3 , further comprising: first and second cylinder bodies constituting the first and second compressing compartments, respectively; first and second compressing devices disposed within the first and second compressing compartments, respectively; a rotational shaft penetrating through the first and second compressing compartments to drive the first and second compressing devices; a partition plate disposed between the first and second cylinder bodies; and first and second shaft supporting members provided opposite to the partition plate to close openings of the first and second compressing compartments, respectively, while supporting the rotational shaft.  
   
   
       5 . The compressor according to  claim 4 , wherein the communication hole is formed through the partition plate, and the first and second cavities are formed on inner surfaces of the first and second shaft supporting members, respectively, so as to be opposite to the communication hole.  
   
   
       6 . The compressor according to  claim 5 , wherein the first and second compressing devices comprise first and second eccentric portions provided to the rotational shaft within the first and second compressing compartments so as to be eccentric in opposite directions to the rotational shaft, respectively; first and second ring pistons coupled to outer surfaces of the first and second eccentric portions within the first and second compressing compartments, respectively; and first and second vanes to partition an inner space of the first and second compressing compartments while linearly traveling in a radial direction according to rotation of the ring pistons, respectively.  
   
   
       7 . The compressor according to  claim 6 , wherein the communication hole, and the first and second cavities have a maximum width less than a thickness of the ring pistons in the radial direction.  
   
   
       8 . The compressor according to  claim 1 , further comprising: first and second cylinder bodies to constitute the first and second cylindrical compressing compartments, respectively; first and second compressing devices installed within the first and second compressing compartments, respectively; and a rotational shaft installed to penetrate through the first and second compressing compartments in order to operate the first and second compressing devices; and a partition plate disposed between the first and second cylinder bodies, wherein the communication hole is formed through the partition plate so as to be adjacent to the intake ports.  
   
   
       9 . The compressor according to  claim 8 , wherein the first and second compressing devices comprise first and second eccentric portions provided to the rotational shaft within the first and second compressing compartments so as to be eccentric in opposite directions to the rotational shaft, respectively; first and second ring pistons coupled to outer surfaces of the first and second eccentric portions within the first and second compressing compartments, respectively; and first and second vanes to partition an inner space of the first and second compressing compartments while linearly traveling in a radial direction according to rotation of the ring pistons, respectively.  
   
   
       10 . The compressor according to  claim 9 , wherein the communication hole, and the first and second cavities have a maximum width less than a thickness of the ring pistons in the radial direction.  
   
   
       11 . A multi-cylinder rotary type compressor, comprising: first and second compressing compartments partitioned from each other; first and second compressing devices to perform compressing operation in a state of being eccentric in opposite directions within the first and second compressing compartments, respectively; first and second intake ports communicated with the first and second compressing compartments, respectively; and a communication hole located adjacent to the first and second intake ports to communicate the first compressing compartment with the second compressing compartment.  
   
   
       12 . The compressor according to  claim 11 , further comprising: a partition plate disposed between the first and second compressing compartments, wherein the communication hole is formed through the partition plate.  
   
   
       13 . The compressor according to  claim 12 , further comprising: first and second cavities recessed a predetermined depth on an inner surface of the respective first and second compressing compartments so as to be adjacent to the communication hole.  
   
   
       14 . The compressor according to  claim 13 , wherein the first and second cavities are located opposite to the communication hole.