Multifunctional fresh air conditioning system without outdoor unit
A technology without outdoor unit and fresh air air conditioner, which is applied in the field of home appliances, can solve the problems of insufficient utilization of heat energy, affect the appearance of buildings, and insufficient heat energy, and achieve the effects of small footprint, convenient installation, and improved efficiency
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Embodiment 1
[0052] In summer, the CPU controls the ventilation system to be in the cooling mode. The CPU controls the three-way valve 3 to open to the right, closes the south air inlet, closes the north ventilation solenoid valve 4, and opens the south ventilation solenoid valve 5, so that fresh air enters from the north and exits from the south. . Because the north side of the building is backed by the sun, the air temperature is low, and the south side is sunny, and the air temperature is high, so the fresh air is selected to enter from the north and exit from the south.
[0053] The CPU controls the four-way valve 11 to rotate 90 degrees so that the first heat exchanger coil 8 in the oil tank 16 becomes a condenser (heating), and at the same time the second heat exchanger coil 9 in the fresh air box 1 becomes an evaporator (refrigeration). The refrigerant passes through compressor 15, high pressure sensor 13, four-way valve 11, first heat exchanger coil 8, throttle valve 10, second he...
Embodiment 2
[0062] In winter, the CPU controls the air conditioning and ventilation system to be in the heating state. The CPU controls the three-way valve 3 to open to the left, close the north air inlet, open the north ventilation solenoid valve 4, and close the south ventilation solenoid valve 5. The fresh air enters from the south and the north out. Because the north side of the building is backed by the sun, the air temperature is low, and the south side is sunny, and the air temperature is high, so the fresh air is selected to enter from the south and exit from the north.
[0063] The CPU controls the four-way valve 11 to rotate 90 degrees so that the first heat exchanger coil 8 in the oil tank 16 becomes an evaporator (refrigeration), and the second heat exchanger coil 9 in the fresh air box 1 becomes a condenser ( heating). The refrigerant passes through the compressor 15, the high pressure sensor 13, the four-way valve 11, the second heat exchanger coil 9, the throttle valve 10,...
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