Air source heat pump defrosting system
An air source heat pump and defrosting solenoid valve technology, applied in lighting and heating equipment, damage protection, refrigeration components, etc., can solve problems such as difficult to guarantee thermal comfort and large room temperature fluctuations, and achieve temperature balance and rational utilization Effect
Pending Publication Date: 2015-07-01
周海瑞
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Problems solved by technology
It can be seen from the above process that during the whole defrosting process, the four-way valve reversed twice, the compressor stopped / started twice, and the heat pump unit stopped supplying heat to the air-conditioned room for 5-10 minutes, resulting in large fluctuations in room temperature and difficulty in thermal comfort. ensure
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Embodiment 1
[0016] A kind of air source heat pump defrosting system of this embodiment, refer to figure 1 , including a hermetic compressor i, the air outlet of the hermetic compressor i is connected to a four-way reversing valve h, one end of the four-way reversing valve h is connected to an evaporator g, and the other end of the evaporator g is connected to a Throttle device f connected in parallel with heating solenoid valve 2 e-7, the other end of throttling device f is connected with defrosting solenoid valve e and heating solenoid valve 1 e-6, and one end of defrosting solenoid valve e is connected with fin The other end of plate heat exchanger k and fin heat exchanger k is connected with three-way solenoid valve a, and the other two ends of three-way solenoid valve a are respectively connected with distributor one b- which is connected with four-way reversing valve h 1. Distributor 2 b-2 connected with heating solenoid valve 1 e-6, the other end of distributor 2 b-2 is connected wi...
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The invention relates to an air source heat pump defrosting system and belongs to the technical field of heat pump defrosting system structures. The air source heat pump defrosting system comprises a full sealing compressor which is connected with a four-way reversing valve. The four-way reversing valve is connected with an evaporator. The other end of the evaporator is connected with a throttling device, and the other end of the throttling device is connected with a defrosting electromagnetic valve and a first heating electromagnetic valve in parallel. One end of the defrosting electromagnetic valve is connected with a finned heat exchanger, and the other end of the finned heat exchanger is connected with a three-way electromagnetic valve. The other two ends of the three-way electromagnetic valve are respectively connected with a first allocator and a second allocator, the other end of the second allocator is connected with a heating expansion valve, and the other end of the heating expansion valve is connected with a third allocator. According to the air source heat pump defrosting system, the refrigerant is circulated through two ways so that the compressor can complete the defrosting process under the normal operation state and the situations that the working condition and the heat amount do not change. Therefore, the air source heat pump defrosting system ensures the using of the compressor more reasonably, maintains the balance of the temperature and reasonably utilizes the resources.
Description
[0001] technical field [0002] The invention relates to an air source heat pump defrosting system, in particular to an air source heat pump defrosting system applied to an air conditioning unit, and belongs to the technical field of heat pump defrosting system structures. Background technique [0003] As the cold and heat source of the air conditioning system, the air source heat pump unit has made great progress in recent years due to its convenient installation and simple operation. However, in areas with low outdoor temperature and high humidity in winter, when the surface temperature of the finned tube is lower than the air dew point temperature, the water vapor in the air will condense, and when the temperature is lower than 0°C, the condensation will form Frost forms in the form of loose ice crystals that accumulate on the surface of the finned tubes. With the gradual thickening of the frost layer, the resistance of the air flowing through the finned tubes is incre...
Claims
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IPC IPC(8): F25B47/02
CPCF25B47/022
Inventor 周海瑞
Owner 周海瑞