Uninterruptible power supply

Abstract

An uninterruptible power supply of the type provided with a cooling system for controlling the temperature of its components which generate heat the most, the cooling system being of the type with a refrigeration cycle and having a refrigeration container inside which at least one of the components which generate heat the most is arranged.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

Further characteristics and advantages of the invention will become better apparent from the following detailed description of a preferred but not exclusive embodiment thereof, illustrated by way of non-limiting example in the accompanying drawings, wherein:

FIG. 1 is a diagram of a generic known type of uninterruptible power supply;

FIG. 2 is a diagram of a cooling system for an uninterruptible power supply according to the invention.

Claims

1. An uninterruptible power supply provided with a cooling system for controlling temperature of its components which generate heat, said cooling system having a refrigeration cycle and a refrigeration container inside which at least one of said components which generate heat is arranged.

2. The uninterruptible power supply of claim 1, comprising: a main power supply line;a rectifier, with an input transformer associated thereto, suitable to improve a waveform of a current drawn from the main line,an inverter suitable to convert into AC voltage a DC voltage from said rectifier or from one or more batteries which are connected to said main power supply line,and a static switch suitable to connect to a user device either said main power supply line or a bypass secondary power supply line, which is connected directly to a network.

3. The uninterruptible power supply of claim 2, further comprising an output transformer, located between said inverter and said switch.

4. The uninterruptible power supply of claim 2, wherein said cooling system comprises: a heat exchanger; a throttling element; and a refrigeration circuit which comprises a compressor which is suitable to compress a refrigerant in gaseous phase in order to send the refrigerant to the heat exchanger, in output from which said refrigerant, in a liquid phase, is suitable to pass through said throttling element and from there to said refrigeration container, inside which at least one of said components of the uninterruptible power supply which generates heat is positioned, said refrigerant being suitable to exit in the gaseous phase from said container in order to return in input to said compressor.

5. The uninterruptible power supply of claim 4, wherein said components which generate heat include said rectifier, said input transformer, said inverter, said output transformer and said static switch.

6. The uninterruptible power supply of claim 5, wherein said output transformer is positioned within said refrigeration container.

7. The uninterruptible power supply of claim 6, wherein at least part of remaining components of the uninterruptible power supply which are not contained within said container are positioned around and in contact with said refrigeration container.

8. The uninterruptible power supply of claim 6, wherein said refrigeration container is provided externally with a plate for cooling at least one component of the power supply which is arranged in contact with said plate.

9. The uninterruptible power supply of claim 7, wherein said plate is suitable to cool said rectifier and said input transformer, the inverter and the switch, each of which is arranged in contact with said plate.

10. The uninterruptible power supply of claim 8, wherein said rectifier, said input transformer, said inverter, said switch and any other components which generate heat are arranged within the refrigeration container.