Magnetic suspension evaporative cooling direct expansion unit and control method thereof

Abstract

The invention belongs to the technical field of refrigeration, and provides a control method of a magnetic suspension evaporative cooling direct expansion unit. The problems that an existing direct expansion unit mostly adopts an oil system, the heat exchange effect is poor, maintenance is inconvenient, noise is high, energy consumption is high, and energy saving is not facilitated are solved. The magnetic suspension evaporative cooling direct expansion unit comprises a magnetic suspension compressor, an evaporative condenser, a liquid storage device, a gas-liquid separator and a plurality of indoor air coolers; the evaporative condenser comprises a condensation fan and a water tank temperature sensor; the water tank temperature sensor is used for detecting the water temperature in a water tank; and the control method comprises the steps that the water temperature in the water tank and / or the pressure ratio of the magnetic suspension evaporative cooling direct expansion unit are / is obtained; and according to the water temperature in the water tank and / or the pressure ratio of the magnetic suspension evaporative cooling direct expansion unit, starting and stopping of the condensation fan are controlled. According to the magnetic suspension evaporative cooling direct expansion unit and the control method thereof, the heat exchange effect of the unit can be guaranteed, maintenance is convenient, noise is low, dynamic adjustment of the condensation fan can be achieved, energy-saving control is achieved, and energy consumption of the direct expansion unit can be reduced.

Description

technical field [0001] The invention belongs to the technical field of refrigeration, and specifically provides a magnetic levitation evaporative cooling direct expansion unit and a control method thereof. Background technique [0002] In the edible fungus breeding industry, traditional air-conditioning consumes a lot of power, and small machines with oil are easy to break, and the maintenance cost is high, and chillers are often used to produce low-temperature cold water, and the mode of alternating heat exchange between the cold water at the end of the room is either one or two The direct expansion system with one room in the module machine, but these are oil-filled systems, have disadvantages such as poor heat transfer effect, inconvenient maintenance, and high noise, and high energy consumption, which is not conducive to energy saving. [0003] Therefore, the art needs a new magnetic levitation evaporative cooling direct expansion unit and its control method to solve the...

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Problems solved by technology

[0004] In order to solve the above-mentioned problems in the prior art, that is, in order to solve the problems of poor heat exchange effect, inconvenient maintenance, high noise, high energy consumption and unfavorable energy saving due to the oil system mostly used in the existing direct expansion units, the present invention A control method of a magnetic levitation evaporative cooling direct expansion unit is provided. The magnetic levitation evaporative cooling direct expansion unit includes a magnetic levitation compressor, an evaporative condenser, a liquid receiver, a gas-liquid separator, and multiple indoor cooling fans. The magnetic levitation The compressor, the evaporative condenser, the liquid receiver, a plurality of the indoor cooling fans and the gas-liquid separator are sequentially connected to form a closed-loop refrigeration system, and the evaporative condenser includes a condensing fan and a A water tank temperature sensor, the water tank temperature sensor is used to detect the water temperature in the water tank of the evaporative condenser, and the control method includes: obtaining the water temperature in the water tank and / or the pressure of the magnetic levitation evaporative cooling direct expansion unit Ratio; according to the water temperature in the water tank and / or the pressure ratio of the magnetic levitation evaporative cooling direct expansion unit, control the start and stop of the condensing fan

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