Cooling device

Abstract

Provided is a cooling device capable of appropriately cooling a cold insulator and keeping the cold insulator at an appropriate temperature. The cooling device includes a cooling portion that has an inner space storing an object, a measurement means of measuring a temperature corresponding to a temperature of the object stored in the inner space, and a control means of controlling a temperature of the inner space based on a measurement result by the measurement means, in which, based on the measurement result, the control means performs control to change the temperature of the inner space from a first setting temperature that is lower than a temperature at which the object in a liquid phase starts to be solidified to a second setting temperature that is higher than the first setting temperature and lower than a melting temperature of the object.

1 . A cooling device comprising:
 a cooling portion that has an inner space storing an object;   a measurement means of measuring a temperature corresponding to a temperature of the object stored in the inner space; and   a control means of controlling a temperature of the inner space based on a measurement result by the measurement means, wherein   based on the measurement result, the control means performs control to change the temperature of the inner space from a first setting temperature that is lower than a temperature at which the object in a liquid phase starts to be solidified to a second setting temperature that is higher than the first setting temperature and lower than a melting temperature of the object.   
     
     
         2 . The cooling device according to  claim 1 , wherein
 when detecting solidification heat and the melting temperature of the object based on the measurement result and then further detecting that the measurement result reaches a reference temperature that is a temperature lower than the melting temperature, the control means performs control to change the temperature of the inner space from the first setting temperature to the second setting temperature.   
     
     
         3 . The cooling device according to  claim 1 , wherein
 when detecting the melting temperature based on the measurement result and then further detecting that the measurement result reaches a reference temperature that is a temperature lower than the melting temperature, the control means performs control to change the temperature of the inner space from the first setting temperature to the second setting temperature.   
     
     
         4 . The cooling device according to  claim 2 , wherein the control means acquires the temperature of the object per unit time from the measurement means and detects the solidification heat based on a change amount of the measurement result per unit time. 
     
     
         5 . The cooling device according to  claim 1 , wherein the control means acquires the temperature of the object per unit time from the measurement means and detects the melting temperature based on a change amount of the measurement result per unit time. 
     
     
         6 . The cooling device according to  claim 4 , wherein the control means is able to change the unit time. 
     
     
         7 . The cooling device according to  claim 1 , wherein
 the cooling portion has a placement portion on which the object is placed, and   the measurement means is a temperature sensor of a contact type that is provided in the placement portion.   
     
     
         8 . The cooling device according to  claim 7 , wherein
 the temperature sensor has a plurality of probes, and   the plurality of probes are provided in the placement portion.   
     
     
         9 . The cooling device according to  claim 7 , wherein
 the placement portion has a plurality of placement portions, the plurality of placement portions are arranged in a vertical direction, and a temperature is controlled for each of the placement portions.   
     
     
         10 . The cooling device according to  claim 1 , wherein the measurement means is a temperature sensor of a non-contact type that is provided in the inner space. 
     
     
         11 . The cooling device according to  claim 1 , wherein
 the cooling portion has a placement portion on which the object is placed,   the placement portion has a weighing means of weighing mass of the object, and   based on an expected cooling time per unit mass of the object, which is stored in advance, and   a weighing result of the weighing means, the control means approximates an expected cooling time of a whole of the object stored in the inner space.   
     
     
         12 . The cooling device according to  claim 1 , wherein
 the inner space is spatially divided into a first space and a second space that is different from the first space, and has a moving means of moving the object from the first space to the second space,   the first space includes the measurement means and is provided so as to be able to change a temperature of the first space between the first setting temperature and the second setting temperature, and   the second space is set to have a third setting temperature that is higher than the first setting temperature and lower than the melting temperature of the object.   
     
     
         13 . The cooling device according to  claim 1 , wherein
 the cooling portion has a cooling means of cooling the inner space, and   the cooling means is a cooling unit of a compressor system.   
     
     
         14 . The cooling device according to  claim 1 , wherein
 the cooling portion has a cooling means of cooling the inner space, and   the cooling means is a cooling unit of a Peltier system.   
     
     
         15 . The cooling device according to  claim 1 , comprising
 an alarm portion that outputs alarm sound, wherein   the control means changes the temperature of the inner space to the second setting temperature and then causes the alarm portion to output the alarm sound.   
     
     
         16 . The cooling device according to  claim 1 , comprising
 an alarm portion that outputs alarm sound, wherein   the control means changes the temperature of the inner space to the second setting temperature, and after the temperature of the inner space reaches the second setting temperature, the control means causes the alarm portion to output the alarm sound.   
     
     
         17 . The cooling device according to  claim 1 , comprising
 an alarm portion that outputs alarm sound, wherein   the control means changes the temperature of the inner space to the second setting temperature, and after the temperature of the object reaches the second setting temperature, the control means causes the alarm portion to output the alarm sound.