3 results about "Liquid cooling system" patented technology

The invention relates to an inverter electric welding machine device with adjustable electric arc, which comprises a welding host machine, a welding torch, a liquid cooling system, a compressed air supply device, a protective gas supply device and an electric arc adjusting device, wherein the welding torch comprises a handle, a main cylinder body, a nozzle, an outer bushing, an inner bushing, a compression screw, a tungsten stick, a ceramic sleeve and a fixed sleeve. An electric arc adjusting device comprises an electric adjusting mechanism, and a control circuit of the electric arc adjusting device mainly consists of a push-and-pull coil and a reversing switch; the direction of current can be changed by switching the reversing switch, namely, the magnetic induction polarity of the push-and-pull coil can be changed, so that the moving direction of an induction magnet coil is forced to be changed, and the inner and the outer bushings of the welding torch are driven to change the moving direction of the tungsten stick; and a manual adjusting mechanism consists of an adjusting disc and a rotating sleeve, wherein the adjusting disc is manually rotated to drive the rotating sleeve to rotate, and the inner and the outer bushings moves up and down to drive the tungsten stick to move by mechanical transmission. The inverter electric welding machine device has the advantages that one welding machine can realize two electric arc types; free electric arc continuous compression can be converted into plasma electric arc; and the structure is simple, and the use is convenient.

The invention discloses a small liquid cooling system driven by electro-hydraulic micropumps and a method. The system comprises a liquid cooling block filled with liquid working fluid and a heat exchanger filled with liquid working fluid. An outlet of the heat exchanger is connected with an inlet of the liquid cooling block through a first loop pipeline. A first electro-hydraulic micropump is connected into a pipe of the first loop pipeline in series. An outlet of the liquid cooling block is connected with an inlet of the heat exchanger through a second loop pipeline. A second electro-hydraulic micropump is connected into a pipe of the second loop pipeline in series. The liquid cooling system not only solves the high-efficiency cooling problem of a large power electronic device, but also overcomes the defects of conventional mechanical pumps, such as large sizes, high power consumption, large noise, inaccurate flow control, etc. The system has advantages such as no moving parts, reliable operation, low power consumption, easy manufacturing and no need for maintenance. The system can be integrated with chips or channels directly and does not need independent space. The system can be applied to electronic cooling, drug transportation, micro-electro-mechanical system and other fields.

Provided is a cooling system wherein a first two-phase refrigerant can be circulated by a pump through an evaporator, to a first condenser, to a refrigerant-to-refrigerant heat exchanger and back to the pump. By providing the refrigerant-to-refrigerant heat exchanger in series with the condenser, a first environment can be cooled without having to operate a vapor compression circuit when an ambient temperature outside the first environment is a predetermined amount below an ambient temperature in the first environment.