Low-temperature heating control method for refrigerating and heating air conditioner

Abstract

The invention discloses a low-temperature heating control method for a refrigerating and heating air conditioner, and belongs to the technical field of low-temperature control. A temperature sensor capable of detecting the running work condition of the air conditioner is arranged in the air conditioner, the temperature sensor is electrically connected with a controller with a temperature referencevalue, and the controller is used for controlling the air conditioner to be in a low-temperature heating mode of decreasing the circulating air volume according to a comparison result of a signal detected by the sensor and the temperature reference value. When the air conditioner is in the low-temperature heating mode, the controller outputs a control signal to adjust an indoor fan motor to run at low speed by controlling opening and closing of a relay or the silicon-controlled conduction angle, control an auxiliary electric heating device to be started through the relay, and adjust a transverse air plate through an air direction motor to enable an air outlet to be located at the direct downward position and control a lateral air outlet to be closed to decrease the indoor circulating airvolume. According to the refrigerating and heating air conditioner, the heating air supply temperature can be obviously increased, therefore, the low-temperature heating effect is improved, and peoplefeel comfortable.

Description

technical field [0001] The invention belongs to the field of air conditioners, and relates to a low-temperature heating control method for a heating and cooling air conditioner, in particular to a heating and cooling air conditioner that automatically adjusts the operating parameters of the air conditioner according to the working conditions of the air conditioner. Background technique [0002] The refrigeration system of the existing heat pump heating and cooling air conditioner is composed of a compressor, a four-way reversing valve, a condenser, a throttling component and an evaporator; the electric control system includes a controller, a sensor, a control valve, an auxiliary electric heating device and a fan motor and other components. Usually, during heating operation, the air conditioner uses the heat pump heating principle to transfer heat from the outdoors to the indoors through the work of the compressor. The compressor sends the high-temperature and high-pressure ...

AI Technical Summary

Problems solved by technology

Although the temperature of the air outlet on the indoor side is higher than the room temperature, it is still heating, but because the inlet air temperature is low, the outlet air temperature may still be lower than the human body surface temperature, making people feel that the air conditioner does not heat and blows cold air.

At this time, the heating capacity of the air conditioner is also low, and the room temperature rises slowly, which also makes people feel that the heating effect of the air conditioner is poor.