42results about How to "Large drop in temperature" patented technology

The invention provides a laterally-arranged heat pump clothes drying cabinet of a deep dehumidification device. The laterally-arranged heat pump clothes drying cabinet comprises a drying room and a refrigeration and dehumidification device. The refrigeration and dehumidification device is arranged on the side face of the drying room to form a high-position air suction and low-position air exhaust mode or a low-position air suction and high-position air exhaust mode. The drying room air inlet is provided with an air bag, and drying air flows into the drying room through through-holes formed in the air bag. The refrigeration and dehumidification device comprises a first condenser, a second condenser, a third condenser and an evaporator, wherein wet air is divided into two ways, one way of wet air flows through the first condenser and the second condenser to perform heating and temperature rise so as to obtain high-temperature drying air, the other way of wet air flows through the evaporator to perform temperature reduction and passes through the third condenser to perform heating and temperature rise so as to obtain high-temperature drying air, and two ways of drying air are input into the drying room after being mixed. By means of the refrigeration and dehumidification device, the problem that condensation pressure and condensation temperature of a traditional heat pump clothes drying machine at a speed-reduction drying phase are continuously improved, accordingly power consumption, pressure difference and compression ratio of a compressor are improved, energy efficiency ratio is reduced, the working condition is severely worsened, and even the compressor is burned down is solved.

The invention relates to an evaporative cooling method and equipment with an air exhaust function and a cooling capacity recovery function. An air supply pipe and an air exhaust pipe are integrated into a dual-layer pipeline or an integrated double pipeline to be communicated with the equipment and a cooled place, and therefore airflow opposite in air outlet direction and airflow opposite in air return direction can flow in the pipeline at the same time. The thickness of a heat exchanger is small, and the size, in the width direction, of a system is greatly lowered. The two ends of a fan motor are each provided with an axial flow fan blade, and therefore the overall cost is reduced, and the inner structure is compact. The ball wetting efficiency is high and can be 95%-115%. Therefore, according to the equipment with the volume similar to that of an evaporation air conditioner in the prior art, on the premise of increasing little cost, the air exhaust function and the cooling capacity recovery function are additionally added. An additional air exhaust system does not need to be arranged on a building envelope structure like the existing evaporation air conditioner, the system structure is compact, pipeline arrangement is attractive, and the engineering cost is low.

A high-pressure, large-flow, low-temperature, liquid nitrogen / helium heat exchange device. The invention relates to a liquid nitrogen / helium heat exchange device, which comprises a casing and a core placed in the casing. The heat exchanger core is installed in the heat exchanger casing, and the casing is filled with liquid nitrogen. Helium enters the core of the heat exchanger from the two helium inlet pipes in two routes, then enters the gas collection chamber welded on the tube sheet, and then passes through the heat exchange tubes at the rear of the upper part in turn, and connects to the heat exchanger at the front of the upper part. After the heat pipe, the heat exchange tube in the front of the lower half of the connecting pipe, the connecting pipe, and the heat exchange tube in the rear of the lower half, lead out from the helium outlet pipe respectively. The heat exchange tubes are welded between the tube sheets on both sides and supported by the supporting plates. The invention adopts the secondary cooling technology, which can obtain larger temperature drop and lower outlet temperature than the existing low-temperature heat exchanger. The structure design of the gas collection chamber breaks through the shortcoming of low pressure of the existing heat exchanger, and the design technology of the combination of expansion and welding breaks through the problem of easy leakage of helium under high pressure.

A convenient refrigerant for food is prepared from water and one or two of organic acid and alkali-metal carbonate. Its advantages are high effect, low cost and no poison and damage to human body.

The invention discloses an evaporative energy-saving purification air conditioning system for spinning. The system comprises a unit casing. A fresh air port a and an air supply port are arranged on two opposite lateral walls of the unit casing respectively. An air filter a, a mixing chamber a, a vertical pipe indirect evaporative cooler, a mixing chamber b, a hydrodynamic force water spraying device, a water baffle and a blower are sequentially arranged in the unit casing in the fresh air inlet direction. An air return port b is arranged at the top of the mixing chamber a, an air filter c is arranged in the mixing chamber a at the position close to the air return port b, an air outlet is arranged on the upper portion of the vertical pipe indirect evaporative cooler at the position corresponding to the top wall of the unit casing, and a secondary fan is arranged in the air outlet. An air return port a is arranged at the top of the mixing chamber b, an air filter b is arranged in the mixing chamber b at the position close to the air return port a, and the air return port b and the air return port a are communicated with a workshop through air return pipes. By means of the air conditioning system, temperature drop scale is increased, humidifying cooling and dust-removing effects of a water spraying chamber are improved, and energy consumption of the blower is reduced.