Heat load processing system

Abstract

Provided is a measure against a refrigerant leak. A heat load processing system has a plurality of refrigerant circuits and includes a plurality of device units, a casing that collectively houses the plurality of device units configuring the different refrigerant circuits, a refrigerant leak detector that individually detects a refrigerant leak in the respective refrigerant circuits, and a controller. The device units include a heat exchanger that is connected to a refrigerant pipe and a heat medium pipe as a device configuring one of the refrigerant circuits. When the refrigerant leak detector detects the refrigerant leak, the controller performs refrigerant leaking circuit identification processing for identifying a refrigerant circuit in which the refrigerant leak is occurring and a refrigerant leak third control for changing an operating state of a predetermined refrigerant circuit based on a result of the refrigerant leaking circuit identification processing.

1 . A heat load processing system including a plurality of refrigerant systems through which refrigerant circulates, the system comprising:
 a plurality of refrigerant system component devices including a compressor that is configured to compress the refrigerant and/or a heat exchanger that is connected to a refrigerant pipe through which the refrigerant flows and a heat medium pipe through which heat medium flows and being configured to cause the refrigerant and the heat medium to exchange heat with each other, as devices configuring one of the refrigerant system;   a casing collectively housing the plurality of refrigerant system component devices configuring the different refrigerant systems;   a refrigerant leak detector configured to individually detect a refrigerant leak in the respective refrigerant systems; and   a controller configured to control operations of actuators of the respective refrigerant systems,   the controller being configured to perform, when the refrigerant leak detector detects the refrigerant leak, first processing for identifying a refrigerant leaking system that is the refrigerant system in which the refrigerant leak is occurring and second processing for changing an operating state of at least one of the refrigerant systems based on a result of the first processing.   
     
     
         2 . The heat load processing system according to  claim 1 , wherein
 the controller is configured to control the refrigerant leaking system into a stop state in the second processing.   
     
     
         3 . The heat load processing system according to  claim 1  further comprising
 a refrigerant state sensor configured to detect pressures or temperatures of the refrigerant in the respective refrigerant systems, 
 wherein 
 the controller is configured to identify the refrigerant leaking system by comparing states of the refrigerant in the respective refrigerant systems with each other based on detection value of the refrigerant state sensor in the first processing. 
 
     
     
         4 . The heat load processing system according to  claim 1 , wherein
 the controller is configured to identify the refrigerant leaking system while operating the respective refrigerant systems in the first processing.   
     
     
         5 . The heat load processing system according to  claim 1 , wherein
 the controller is configured to identify the refrigerant leaking system while stopping the respective refrigerant systems in the first processing.   
     
     
         6 . The heat load processing system according to  claim 5 , wherein
 the refrigerant system component devices further include a second heat exchanger that is configured to cause the refrigerant compressed by the compressor to condense or radiate heat by causing the refrigerant to exchange heat with water, and   the controller is configured to identify the refrigerant leaking system based on a degree of a pressure drop of high-pressure refrigerant in each of the refrigerant systems in the first processing.   
     
     
         7 . The heat load processing system according to  claim 1 , wherein
 the controller is configured to control the refrigerant systems, other than the refrigerant leaking system out of the refrigerant systems operating when the refrigerant leak is detected by the refrigerant leak detector, in operating states, in the second processing.   
     
     
         8 . The heat load processing system according to  claim 2  further comprising
 a refrigerant state sensor configured to detect pressures or temperatures of the refrigerant in the respective refrigerant systems, 
 wherein 
 the controller is configured to identify the refrigerant leaking system by comparing states of the refrigerant in the respective refrigerant systems with each other based on detection value of the refrigerant state sensor in the first processing. 
 
     
     
         9 . The heat load processing system according to  claim 2 , wherein
 the controller is configured to identify the refrigerant leaking system while operating the respective refrigerant systems in the first processing.   
     
     
         10 . The heat load processing system according to  claim 3 , wherein
 the controller is configured to identify the refrigerant leaking system while operating the respective refrigerant systems in the first processing.   
     
     
         11 . The heat load processing system according to  claim 2 , wherein
 the controller is configured to identify the refrigerant leaking system while stopping the respective refrigerant systems in the first processing.   
     
     
         12 . The heat load processing system according to  claim 3 , wherein
 the controller is configured to identify the refrigerant leaking system while stopping the respective refrigerant systems in the first processing.   
     
     
         13 . The heat load processing system according to  claim 2 , wherein
 the controller is configured to control the refrigerant systems, other than the refrigerant leaking system out of the refrigerant systems operating when the refrigerant leak is detected by the refrigerant leak detector, in operating states, in the second processing.   
     
     
         14 . The heat load processing system according to  claim 3 , wherein
 the controller is configured to control the refrigerant systems, other than the refrigerant leaking system out of the refrigerant systems operating when the refrigerant leak is detected by the refrigerant leak detector, in operating states, in the second processing.   
     
     
         15 . The heat load processing system according to  claim 4 , wherein
 the controller is configured to control the refrigerant systems, other than the refrigerant leaking system out of the refrigerant systems operating when the refrigerant leak is detected by the refrigerant leak detector, in operating states, in the second processing.   
     
     
         16 . The heat load processing system according to  claim 5 , wherein
 the controller is configured to control the refrigerant systems, other than the refrigerant leaking system out of the refrigerant systems operating when the refrigerant leak is detected by the refrigerant leak detector, in operating states, in the second processing.   
     
     
         17 . The heat load processing system according to  claim 6 , wherein
 the controller is configured to control the refrigerant systems, other than the refrigerant leaking system out of the refrigerant systems operating when the refrigerant leak is detected by the refrigerant leak detector, in operating states, in the second processing.