A multi-cycle HVAC air conditioning assembly, controller and control method thereof

Abstract

The invention discloses a multi-cycle HVAC air conditioning assembly, a controller and a control method thereof. The multi-cycle HVAC air conditioning assembly comprises a HVAC assembly cabinet, wherein a controller, a main air inlet duct and an air outlet channel are arranged on the HVAC assembly cabinet; a cooling / heating core is arranged in the HVAC assembly cabinet; the multi-cycle HVAC air conditioning assembly further comprises a short-circuit air door, a servo motor mechanism and a short-circuit air duct; the servo motor mechanism is connected with the controller; the controller sends out a servo signal, controls the short-circuit air door to open and guides a part of outlet air into the main air inlet duct through the short-circuit air duct; after the outlet air is mixed with a small amount of fresh inlet air to form mixed air, the mixed air passes through the cooling / heating core again, and a multi-cycle air mixing function is achieved; and the other part of the outlet air is directly blown out of an air outlet through the air outlet channel. According to the multi-cycle HVAC air conditioning assembly, the controller and the control method thereof disclosed by the invention, multi-cycle is adopted to perform multiple heat exchange between the inhaled fresh air and the cooling / heating core, and only a part of the air after heat exchange is blown out of the opening of the air duct; and after multi-cycle of the air entering the HVAV, the heating / cooling capacity exchange efficiency is increased greatly, and an ideal air outlet temperature can be achieved as required.

Description

technical field [0001] The invention relates to a multi-cycle HVAC air-conditioning assembly, a controller and a control method thereof, and belongs to the technical field of automobile electrics. Background technique [0002] At present, the air-conditioning HVAC assembly on the market is directly blown out through the air duct after a heat exchange through the cooling evaporator core or the warm air core, and the degree of single heat exchange between the fresh air and the cold / heating core is insufficient. [0003] This method will cause the cold air blown out under the cooling state to be not cold enough, and the hot air blown out under the heating state to be hot enough when the cab temperature does not change significantly at the initial stage of the air conditioner. [0004] The wind blown by the air conditioner is quickly neutralized with the air in the cab, the temperature of the cab does not drop significantly, and the temperature of the fresh air inhaled by the ai...

AI Technical Summary

Problems solved by technology

[0002] At present, the air-conditioning HVAC assembly on the market is directly blown out through the air duct after a heat exchange through the cooling evaporator core or the warm air core, and the degree of single heat exchange between the fresh air and the cold / heating core is insufficient.

[0003] This method will cause the cold air blown out under the cooling state to be not cold enough, and the hot air blown out under the heating state to be hot enough when the cab temperature does not change significantly at the initial stage of the air conditioner.

[0004] The wind blown by the air conditioner is quickly neutralized with the air in the cab, the temperature of the cab does not drop significantly, and the temperature of the fresh air inhaled by the air conditioning system is still close to the room temperature of the cab, which affects the effect of the next heat exchange; In the early stage, the temperature itself could not quickly reach the ideal working temperature, which further exacerbated the difficulty of heat exchange between the fresh air and the core to achieve the ideal air outlet temperature

[0005] Therefore, for a period of time after the air conditioner is turned on, the fresh air temperature is always close to the current temperature of the cab, while the air outlet temperature is difficult to reach a satisfactory comfortable temperature for a long time

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