Novel air source heat pump heating system with automatic defrosting function

Abstract

The invention discloses a novel air source heat pump heating system with an automatic defrosting function. The novel air source heat pump heating system comprises an air source heat pump heating pipe which comprises a water storage tank, a fan coil radiator, a first water pump, a second water pump, a pressure tank and a water feeding / water drainage valve; the left side and the right side of the water storage tank are each provided with a water inlet pipe and a water outlet pipe, and a water loop is formed on one side through the water feeding / water drainage valve, the pressure tank, the first water pump and a fluorine / water heat exchanger; and a heating water loop is formed on the other side of the water storage tank through the second water pump, the water storage tank and the fan coil radiator. According to the novel air source heat pump heating system, a pressure difference meter is installed at the position, close to a lower-portion frame, of the outdoor fluorine / water heat exchanger, one air taking pipe opening of the pressure difference meter is exposed out of outdoor air, and is arranged in a manner of facing the wind; and the other air taking pipe opening is installed at the airflow facing position where air flows through one horizontal fin pipe cluster. According to the novel air source heat pump heating system, motion of the first water pump and a four-way valve are controlled according to switching signals output according to the pressure difference meter, and therefore automatic defrosting is achieved.

Description

technical field [0001] The invention relates to a heating system utilizing an air source heat pump, in particular to an air source heat pump heating system with a novel automatic defrosting function. The invention belongs to the technical field of building energy-saving and emission-reducing air conditioning. Background technique [0002] Air source heat pump is an advanced, clean, renewable energy heating equipment. [0003] Replacing coal-fired stoves with electric heating is an inevitable trend for energy saving, environmental protection and air pollution reduction! Air source heat pump is the most energy-efficient heating equipment, so it is the only way to protect the environment. Air source heat pump is not only energy-saving, environmentally friendly, and power-saving, but also can provide cooling / warming and domestic hot water. [0004] The disadvantages of the previous air source heat pump heating system are: 1. When the outdoor air humidity is high in winter, the...

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Problems solved by technology

[0004] The disadvantages of the previous air source heat pump heating system are: 1. When the outdoor air humidity is high in winter, the outdoor unit of the air source heat pump frosts seriously. Since the defrosting heat is taken from the room, the indoor temperature will drop, especially when the hot air is used for heating. make the body feel uncomfortable

[0005] 2. Since the moisture content of the outdoor air changes throughout the heating season, when the moisture content is low, the defrosting in the past will also be performed when the outdoor unit has no frost, which wastes power in vain

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