Cooling system of heating power device

Abstract

The invention provides a cooling system of a heating power device. The cooling system comprises an air conditioning unit and an ejector; the air conditioning unit comprises a compressor, a condenser, a throttle part and an evaporator; a second coolant outlet of the condenser is connected with a high-pressure inlet of the ejector; a liquid coolant outlet of the evaporator is connected with a low-pressure inlet of the ejector; an outlet of the ejector is connected with a second suction inlet of the evaporator and a suction inlet of the compressor; a pipeline between the outlet of the ejector or a pipeline between the outlet of the ejector and the suction inlet of the compressor is in heat transfer relation with the heating power device. The cooling system has the advantages that the ejector is directly used to guide low-temperature low-pressure coolant from the evaporator to a position around the heating power device, thereby cooling the heating power device, using the throttle element to throttle the coolant and then cool the heating power device is not required, and the cooling system is simple to control and can run stably and reliably.

Description

technical field [0001] The invention relates to a refrigeration and cooling system, in particular to a cooling system for heating power devices. Background technique [0002] At present, for refrigeration units with photovoltaic power generation systems, important components such as inverters, rectifier modules, and reactors of frequency converters usually use the refrigerant cooling of the refrigeration system itself or use air cooling. figure 1 It is a schematic diagram of the cycle of cooling the heating power device by the refrigerant in the commonly used refrigeration system. During the operation of the unit, part of the high-pressure liquid refrigerant from the condenser flows into the evaporator through the main refrigeration circuit for heat exchange, and the other part enters the auxiliary refrigeration circuit, and is used to cool the inverter, rectifier module and reactor of the frequency converter respectively after throttling. After absorbing heat and evaporati...

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Problems solved by technology

[0004] 1. Due to the large demand for cooling load, the volume of the fan is large, resulting in a large overall volume of the inverter;

[0005] 2. The large air volume causes the noise of the fan to be too large;

[0006] 3. The problem of dust accumulation has an impact on the reliability of electrical components

[0007] 4. The cooling fan has poor regulation, high energy consumption and no energy saving

[0008] 5. The fan exhaust causes the temperature of the unit installation environment to rise, and it is necessary to add a corresponding air conditioning system to the machine room

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