Heat pump suitable for high altitude and control method thereof

Abstract

The invention discloses a heat pump suitable for high altitude. The heat pump comprises two air heat exchangers arranged indoors and outdoors separately, and draught fans for providing airflow for thetwo air heat exchangers, wherein the two air heat exchangers are connected through a closed refrigerant pipeline; a compressor is further arranged on the refrigerant pipeline; the heat pump further comprises an indoor unit controller and an outdoor unit controller having mutual communication; the indoor unit controller is electrically connected with the indoor draught fan; the outdoor unit controller is electrically connected with the outdoor draught fan; the heat pump further comprises an outdoor barometric pressure sensor; and the barometric pressure sensor communicates with the outdoor unit controller; and the barometric pressure sensor is utilized to detect the outdoor barometric pressure, so that the rotating speed of the draught fan is correspondingly adjusted, the air volume generated by the draught fan can meet the demand of the air heat exchangers under the barometric pressure environment, and sufficient air volume and the heating effect can be ensured especially in the highaltitude areas with thin air. The invention is used in the field of heat pumps.

Description

technical field [0001] The invention relates to the field of heat pumps, in particular to a heat pump suitable for high altitudes and a control method thereof. Background technique [0002] The most popular device for room heating is an air conditioner heat pump, which has dual functions of cooling in summer and heating in winter. Its structure is divided into two parts, indoor and outdoor, each of which is equipped with an air heat exchanger, and the air flows through the heat exchanger through the action of the fan for heat exchange, so as to achieve the purpose of cooling and heating. [0003] During heating in winter, the refrigerant in the evaporator draws heat from the air, and after being sucked into the compressor, it is compressed to increase the pressure and temperature. The hot refrigerant is sent to the indoor condenser, and the fan diffuses the hot air into the room to achieve the purpose of heating. In summer, the refrigerant cycle is reversed through the four...

AI Technical Summary

Problems solved by technology

The fan rotates at the same speed, but the air volume is much less, so the outdoor evaporator cannot absorb enough heat energy, resulting in insufficient indoor heating. The higher the altitude, the worse the heating effect, and even shutdown due to low refrigerant circulation

And because of the thin air in high-altitude areas, the indoor air supply speed is lower than the set value, which causes the airflow field to fail to form a wall-attached state, which affects the reasonable distribution of the temperature field and fails to meet the comfort requirements.

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