Pump

Abstract

A pump is provided that includes a tube 1 , tube rotors 21 A, 21 B, and 21 C in contact with the tube 1 , a case 3 containing the tube 1 and tube rotors 21 A, 21 B, and 21 C, and a drive apparatus 10 that rotates the tube rotors 21 A, 21 B, and 21 C from outside the case 3 without contacting the tube rotors 21 A, 21 B, and 21 C.

1 . A pump comprising:
 a tube;   a tube rotor in contact with the tube;   a case containing the tube and the tube rotor;   a drive apparatus rotating the tube rotor from outside the case without contacting the tube rotor; and   a light reflector disposed on a tube rotor holding member holding the tube rotor.   
     
     
         2 . The pump according to  claim 1 , wherein the case is closed. 
     
     
         3 . The pump according to  claim 1 , wherein the case has no fluid permeability. 
     
     
         4 . The pump according to  claim 1 , wherein the case has no liquid permeability. 
     
     
         5 . The pump according to  claim 1 , wherein
 the case is provided with an inlet connector and an outlet connector,   one end of the tube is connected to the inlet connector, and   another end of the tube is connected to the outlet connector.   
     
     
         6 . The pump according to  claim 1 , wherein the case is provided, on an inside thereof, with a recessed part for accommodating the tube and the tube rotor. 
     
     
         7 . The pump according to  claim 1 , further comprising a magnet connected to the tube rotor, wherein
 the drive apparatus rotates the tube rotor via a magnetic force of the magnet.   
     
     
         8 . The pump according to  claim 7 , wherein the magnet is provided to the tube rotor. 
     
     
         9 . The pump according to  claim 7 , further comprising a transmission rotor connected to the tube rotor, wherein
 the magnet is provided to the transmission rotor.   
     
     
         10 . The pump according to  claim 9 , further comprising an internal drive rotor connecting the tube rotor and the transmission rotor. 
     
     
         11 . The pump according to  claim 9 , wherein the case is provided, on an inside thereof, with a recessed part for accommodating the transmission rotor. 
     
     
         12 . (canceled) 
     
     
         13 . The pump according to  claim 1 , further comprising:
 a light source that projects light to the light reflector from outside the case; and   a light receiver that receives reflected light from the light reflector.   
     
     
         14 . The pump according to  claim 13 , further comprising a rotation rate calculator that computes a rotation rate of the tube rotor, based on reflected light received by the light receiver. 
     
     
         15 . The pump according to  claim 13 , wherein a housing part that contains the light source and the light receiver is provided in an outer wall of the case. 
     
     
         16 . The pump according to  claim 1 , wherein the case and the drive apparatus are separable. 
     
     
         17 . A pump comprising:
 a case provided with an annular recessed part;   a tube disposed along at least a portion of a side surface of the recessed part of the case;   a tube rotor disposed inside the recessed part of the case so as to be able to contact the tube; and   an internal drive rotor in contact with the tube rotor, wherein the tube rotor is rotated by a frictional force between the internal drive rotor and the tube rotor, the frictional force being generated in the case where the internal drive rotor rotates,   the pump further comprising a light reflector disposed on a tube rotor holding member holding the tube rotor.   
     
     
         18 . The pump according to  claim 17 , wherein the tube rotor rotates around a center of the tube rotor as well as rotates around a center of the internal drive rotor inside the recessed part. 
     
     
         19 . The pump according to  claim 17 , wherein the tube rotor has a longer radius than a radius of the internal drive rotor. 
     
     
         20 . The pump according to  claim 17 , wherein, at a portion of the side surface of the recessed part of the case where the tube is not disposed, the tube rotor contacts this portion of the side surface of the recessed part. 
     
     
         21 . The pump according to  claim 17 , wherein a surface of the internal drive rotor in contact with the tube rotor is rough.