Air handling units based on the cascade utilization of energy

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Energy cascade utilization of air handling units, which involves an Air handling units. The present invention to solve the existing air handling fresh air and return air is first mixed, post-processing, energy can not ca scade utilization, causing the system is difficult to achieve small temperature difference between flow problem. The upper layer processing unit including upper humidifier, the upper heating coil and the upper surface cooler, followed in accordance with the direction of the wind is set to the upper surface cooler, upper heating coil and the upper humidifier, lower handling units, including lower humidifier, the lower heating plate tube and the lower surface air cooler, in accordance with the direction of the wind in turn set for lower cooling, the lower the heating coil and the lower the humidifier on the return air inlets fixed on the box side at the beginning of the upper layer processing unit, one end of the pipe and return air connected to the air inlet through the upper layer processing unit of the present invention deal with return air, the lower handling units processing fresh air or fresh air plus part o f the return air, mixed after this deal, the small temperature difference between flow and energy cascade utilization.
Air handling units based on the cascade utilization of energy, which includes a box (1) partition (2), two blower (3), heat recovery (4), exhaust pipe (10), pipe (13) return air inlet (14), heat recovery exhaust port (15), outlet (16), outlet (17), motivated outlet (18), the air inlet (19), the upper processing unit ( 20), the lower processing unit (21), the first air flow control valve (F1), the second air flow control valve (F2), the third air volume control valve (F3), hot and cold source water supply (L2) and low temperature cold source water ( L1), spacer (2) is divided into the upper box and lower box (12) (11) in the box (1) in the middle, and enclosure (1), characterized in that: heat recovery system (4) fixed in the box (11) under the cabinet (12) and is located between the upper box (11) and under the cabinet (12) entry inside of the outlet (16) and under the air outlet (17) were fixed on the box (11) and box (12) on the export side of the two blower (3) were set at the exit on the box (11) and box (12), motivated outlet (18) and under the air inlet (19) were fixed on the box (11) and box (12) on the entrance side of the heat recovery of exhaust port (15) fixed to the heat recovery unit (4) on the export side of the box (11), the upper part of the partition (12) that the upper layer processing unit (20), partition (2) the lower part of that is, the lower layer processing unit (21), the upper layer processing unit (20) upper humidifier (5), the upper heating coil (6) and the upper surface cooler (7), in accordance with the direction of the wind in turn set the upper surface cooler (7), the upper heating coil (6) and the upper humidifier (5), the lower processing unit (21) including a lower humidifier (25), and the lower heating coil (26) and lower