Technical characteristics of air source heat pump system

Technical characteristics:

1. An air source heat pump system, characterized by comprising more than two outdoor heat exchangers, wherein the outdoor heat exchangers are divided into preheating heat exchangers (1) and ordinary heat exchangers (2), so One side of the preheating heat exchanger (1) is connected to the indoor heat exchanger (3), and the refrigerant discharged from the indoor heat exchanger (3) can flow directly to the preheating heat exchanger ( 1), the other side of the preheating heat exchanger (1) is connected with the ordinary heat exchanger (2) and a throttling device (4) is arranged between the two, the preheating heat exchanger (1) The air passing through it can be heated, and the heated air can flow to the ordinary heat exchanger (2). 2. The air source heat pump system according to claim 1, wherein the outdoor heat exchanger is divided into a windward side heat exchanger (5), an intermediate heat exchanger (6) and a leeward side heat exchanger (7). ), the intermediate heat exchanger (6) is located between the windward side heat exchanger (5) and the leeward side heat exchanger (7), the windward side heat exchanger (5) and the leeward side heat exchanger (5) The side heat exchanger (7) is the ordinary heat exchanger (2), and the preheating heat exchanger (1) is an intermediate heat exchanger (6). 3. The air source heat pump system according to claim 2, wherein the number of the intermediate heat exchanger (6) is one, and the intermediate heat exchanger (6) and the windward side heat exchanger (5) and the leeward side heat exchanger (7) are connected in sequence. 4. The air source heat pump system according to claim 2, wherein the number of the intermediate heat exchanger (6) is one, and the intermediate heat exchanger (6) and the leeward heat exchanger (7) and the windward side heat exchanger (5) are connected in sequence. 5. The air source heat pump system according to claim 2, characterized in that the number of the intermediate heat exchangers (6) is more than two, and each outdoor heat exchanger is connected in series, starting from the preheating The ordinary heat exchanger (2) to which the refrigerant discharged from the heat exchanger (1) finally flows after throttling is the windward side heat exchanger (5) or the leeward side heat exchanger (7) or intermediate heat exchanger (6). 6. The air source heat pump system according to claim 2, wherein the number of the intermediate heat exchanger (6) is one; or the number of the intermediate heat exchanger (6) is two Above and the air can pass through the windward side heat exchanger (5), each of the intermediate heat exchangers (6) and the leeward side heat exchanger (7) in sequence. 7. According to claim 1

The air source heat pump system according to any one of 6, characterized in that the throttling device (4) is an expansion valve. 8. According to claim 1

The air source heat pump system according to any one of 6, characterized in that a throttling device (4) is provided between the indoor heat exchanger (3) and the preheating heat exchanger (1). 9. The air source heat pump system according to claim 2, characterized in that a fan (8) or one of the windward side heat exchanger (5) is provided on one side of the leeward side heat exchanger (7) A fan (8) is provided on the side. 10. According to claim 1

The air source heat pump system according to any one of 6, characterized in that the air source heat pump system further includes a compressor (9), a gas-liquid separator (10) and a four-way valve (11).

Technical summary

The utility model provides an air source heat pump system, relates to the technical field of heat pump systems, and provides a new air source heat pump system that can slow down the frosting of heat exchangers. The air source heat pump system includes more than two outdoor heat exchangers. The outdoor heat exchangers are divided into preheating heat exchangers and ordinary heat exchangers. One side of the preheating heat exchanger is connected to the indoor heat exchanger and the indoor The refrigerant discharged from the heat exchanger can flow directly to the preheating heat exchanger without throttling. The other side of the preheating heat exchanger is connected with the ordinary heat exchanger and a throttling device is set between the two to preheat the heat exchange. The heat exchanger can heat the air passing through it and the heated air can flow to the ordinary heat exchanger. The utility model is used for slowing down the frosting rate of the heat exchanger of the air source heat pump system. Slow down the frosting rate of the heat exchanger of the air source heat pump system. Slow down the frosting rate of the heat exchanger of the air source heat pump system.

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