Manufacturing method of air source heat pump system

1. The utility model relates to the technical field of heat pump systems, in particular to an air source heat pump system.

Background technique:

2. Air source heat pump systems all have the problem of frosting on the air side heat exchanger. Once frosting, the heat exchange performance of the heat exchanger will decrease, so slowing down the frosting rate of the heat exchanger or suppressing the frosting of the heat exchanger can improve The heat exchange performance of the heat exchanger.

3. The skilled person finds that the existing technology has at least the following technical problems:

4. When the outdoor heat exchanger has multiple rows (more than three rows and including three rows), the frosting rate of the outdoor heat exchangers of different rows is different. Generally, the leeward side heat exchanger is frosted first, followed by The middle part of the heat exchanger, the windward side heat exchanger is the last to frost. Since the degree and rate of frosting of the heat exchanger are related to factors such as relative air humidity, air temperature, inlet wind speed and fin structure, the specific performance is that the greater the relative humidity of the inlet air, the easier it is to frost. The inlet air temperature is between 0°C and 3°C. The frosting rate is the highest in the interval. The greater the inlet wind speed, the less likely to be frosted, and the greater the fin spacing, the less likely to be frosted. The air flows from the windward side to the leeward side. As the refrigerant in the heat exchanger continuously evaporates to take away the heat of the air flowing through the surface of the heat exchanger, the temperature of the air will drop and the relative humidity will rise. Heaters are relatively more prone to frost.

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