Dehumidification control method for vehicle frequency conversion air conditioner

Abstract

The invention relates to a dehumidification control method of a frequency conversion air conditioner of a vehicle, comprising the following steps: A, judging the passenger carrying capacity in a vehicle compartment; when the carrying capacity H >= the first set carrying capacity AW1, executing step B; when the carrying capacity H is less than the first set carrying capacity AW1, executing step C;B, controlling that air conditioning system to operate in a normal refrigeration mode; C, judging whether that start condition of the dehumidification mode is met, and If the condition is met, the dehumidification mode is entered, and if the condition is not met, the normal cooling mode is performed. The invention introduces passenger carrying capacity information of a car into dehumidification control, according to the passenger capacity information of the train compartment to control the dehumidification and refrigeration of the air conditioning system, not only the control method is simple,but also the dehumidification effect can be guaranteed and the comfort can be improved. At the same time, the method only relies on the frequency conversion control technology to realize the constanttemperature dehumidification control. In the constant temperature dehumidification process of the air conditioner, no additional equipment loss and electric energy consumption are added, so as to achieve the purpose of energy conservation and environmental protection.

Description

technical field [0001] The invention belongs to the technical field of air conditioning, and in particular relates to a dehumidification control method for a vehicle frequency conversion air conditioner. Background technique [0002] The environment of the air-conditioning system of rail vehicles generally has the characteristics of large differences in the environment where the vehicle is located, large changes in the environment outside the compartment during the operation of the vehicle, large changes in the passenger capacity during the operation of the vehicle, and large differences in the heat load inside the compartment. In the cooling season, affected by the external environment and the passenger capacity of the vehicle, the humidity in the compartment is high, which affects the passenger experience. Therefore, the air conditioning system needs to carry out necessary dehumidification and humidity control to the air in the compartment. [0003] At present, most of th...

AI Technical Summary

Problems solved by technology

When this method is used for dehumidification, if the heat load in the compartment is small and the humidity is higher than the set value, the air conditioner will run in full cooling mode, which will cause the temperature in the compartment to drop rapidly. Lowering the set temperature will cause the interior temperature of the compartment to be lower, which will affect passengers. ride experience

[0004] For rail vehicle air conditioning systems using frequency conversion control, the dehumidification effect can only be achieved by adjusting the air volume or increasing the operating frequency of the compressor. The adjustment method is relatively simple, and the dehumidification effect and comfort are poor.

The better effect usually adopts the way of compressor high-frequency refrigeration and electric heating heating working at the same time, that is, controlling the high-frequency refrigeration of the compressor, and at the same time controlling the outlet air temperature through electric heating, which has achieved the dehumidification effect and ensured comfort, but this The energy consumption of this method is relatively high, and the goal of high efficiency and energy saving cannot be achieved.

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