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(11) | EP 2 584 288 A3 |
| (12) | EUROPEAN PATENT APPLICATION |
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| (54) | Cooling System And Cooling Method |
| (57) Cooling system and cooling method that enable preventing breakdown of coolant pump
(7) is provided. The cooling system (100), includes: evaporator (8) for evaporating
coolant by heat exchange with indoor air as an object of air conditioning; condenser
(5) for cooling and condensing coolant evaporated by evaporator (8); coolant liquid
storage section (6) that communicates with condenser (5) and stores coolant liquid
flowing in from condenser (5); coolant pump (7) that communicates with coolant liquid
storage section (6) and pressure-transmits coolant liquid toward evaporator (8), the
coolant liquid flowing in from coolant liquid storage section (6); coolant liquid
detection units (S1, S2) for individually detecting whether or not liquid level of
coolant liquid stored in coolant liquid storage section (6) is higher than or equal
to respective plural heights (H1, H2) including first height (H1) and second height
(H2) higher than first height (H1) in coolant liquid storage section (6); and control
unit (10) that changes motor rotation speed of coolant pump (7), corresponding to
detection result input from coolant liquid detection units (S1, S2).
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