Liquid transporting apparatus and liquid transporting method

Abstract

A liquid transporting apparatus includes a pump unit that transports a liquid, a battery housing unit that houses a battery supplying power for driving the pump unit; a driving unit that drives the pump, a control unit that controls the driving unit, and a temperature measuring unit that measures a temperature. The control unit controls driving of the pump unit by a first mode in which the pump unit is driven by a predetermined driving amount in unit time and a second mode in which the pump is driven by a driving amount that is smaller than the predetermined driving amount in unit time that is shorter than the unit time described above when the temperature measured by the temperature measuring unit is lower than a predetermined value.

What is claimed is: 
     
         1 . A liquid transporting apparatus transporting a liquid, comprising:
 a pump unit that transports a liquid;   a drive unit that drives the pump unit by being supplied power from a battery;   a temperature measuring unit that measures a temperature; and   a control unit that controls the drive unit by a control of a first mode or a control of a second mode based on the temperature,   wherein the drive unit drives the pump unit by a predetermined driving amount per unit time as the control of the first mode, and   wherein the drive unit drives the pump unit by a driving amount that is less than the predetermined driving amount per unit time shorter than the unit time as the control of the second mode if the temperature is lower than a predetermined value.   
     
     
         2 . The liquid transporting apparatus according to  claim 1 , further comprising:
 a boosting circuit that boosts a voltage of power supplied to the drive unit.   
     
     
         3 . The liquid transporting apparatus according to  claim 1 ,
 wherein the pump unit includes a tube, a plurality of fingers pressing the tube, a cam pressing the fingers,   wherein in the control of the first mode, a skip drive is performed to skip a period in which a finger on the most downstream side in a transport direction of a liquid closes the tube and the liquid is not transported, and a period in which the finger on the most downstream side is opened and the liquid flows back, and   wherein in the control of the second mode, the skip drive is not performed.   
     
     
         4 . The liquid transporting apparatus according to  claim 1 ,
 wherein a battery housing unit storing the battery includes a heat insulating material for insulating the battery.   
     
     
         5 . The liquid transporting apparatus according to  claim 4 ,
 wherein the temperature measuring unit is housed in the battery housing unit.   
     
     
         6 . A liquid transporting method for transporting a liquid, the method comprising:
 driving a pump unit by a drive unit by power supplied from a battery;   performing a control to drive the drive unit by a control unit by a predetermined driving amount per unit time as a control of a first mode; and   performing a control to drive the drive unit by the control unit by a driving amount that is less than the predetermined driving amount per unit time shorter than the unit time as a control of a second mode if the temperature measured by a temperature measuring unit is lower than a predetermined value.