Air handling unit

Abstract

An air handling unit includes a heat exchange cabinet and a fan cabinet. The heat exchange cabinet includes two first assembly components each being at one of two ends of the heat exchange cabinet in a height direction of the heat exchange cabinet. The fan cabinet includes a second assembly component at one end of the fan cabinet in a height direction and corresponding to the first assembly components. The heat exchange cabinet is configured to be in one of a first assembly state and a second assembly state. In the first assembly state, the first assembly component at one of the two ends of the heat exchange cabinet is connected to the second assembly component. In the second assembly state, the first assembly component at another one of the two ends of the heat exchange cabinet is connected to the second assembly component.

1 .- 16 . (canceled) 
     
     
         17 . An air handling unit comprising:
 a heat exchange cabinet, including two first assembly components each being at one of two ends of the heat exchange cabinet in a height direction of the heat exchange cabinet; and   a fan cabinet, including a second assembly component at one end of the fan cabinet in a height direction and corresponding to the first assembly components;   wherein the heat exchange cabinet is configured to be in one of:
 a first assembly state, in which the first assembly component at one of the two ends of the heat exchange cabinet is connected to the second assembly component; and 
 a second assembly state, in which the first assembly component at another one of the two ends of the heat exchange cabinet is connected to the second assembly component. 
   
     
     
         18 . The air handling unit of  claim 17 , wherein:
 each of the first assembly components includes a first positioning frame and a first connection mechanism;   the second assembly component includes a second positioning frame and a second connection mechanism;   the first positioning frame and the second positioning frame are configured to match each other for positioning when the heat exchange cabinet is in the first assembly state or the second assembly state; and   the first connection mechanism and the second connection mechanism are configured to be detachably connected to each other when the heat exchange cabinet is in the first assembly state or the second assembly state.   
     
     
         19 . The air handling unit of  claim 18 , wherein the first positioning frame includes one of a positioning protrusion and a positioning recess, and the second positioning frame includes another one of the positioning protrusion and the positioning recess. 
     
     
         20 . The air handling unit of  claim 19 , wherein the positioning protrusion is provided with a first matching surface, the positioning recess is provided with a second matching surface configured to abut against the first matching surface, and the first matching surface and the second matching surface are inclined surfaces or arc surfaces that match each other. 
     
     
         21 . The air handling unit of  claim 18 , wherein:
 the heat exchange cabinet includes an enclosure plate, the enclosure plate including a sheet metal member and extending along a circumferential direction of the heat exchange cabinet; and   the two first positioning frames each include a plastic member and are connected to two ends of the enclosure plate, respectively.   
     
     
         22 . The air handling unit of  claim 21 , wherein:
 the enclosure plate includes, at each end of the two ends of the enclosure plate:
 a positioning member arranged around a part of an outer peripheral wall of the first positioning frame at the end; and 
 an installation member extending towards a center of the heat exchange cabinet; and 
   each of the two first positioning frames is fixedly connected to the corresponding installation member.   
     
     
         23 . The air handling unit of  claim 22 , wherein the outer peripheral wall of the first positioning frame is provided with a positioning groove, and the corresponding positioning member is disposed in the positioning groove. 
     
     
         24 . The air handling unit of  claim 18 , wherein:
 one of the first connection mechanism and the second connection mechanism includes a snap seat including a first snap part; and   another one of the first connection mechanism and the second connection mechanisms includes:
 a base including a first connection part; 
 a snap cover including:
 a second connection part disposed at one end of the snap cover and hinged with the first connection part, so that another end of the snap cover is capable of rotating to be close to or far away from the base; and 
 a third connection part separated from the second connection part; and 
 
 a closing cover, including a fourth connection part at one end of the closing cover and hinged with the third connection part, another end of the closing cover including a second snap part configured to be snapped with the first snap part. 
   
     
     
         25 . The air handling unit of  claim 24 , wherein:
 the first connection mechanism includes the snap seat;   the second connection mechanism further includes a fixation bolt and a torsion spring;   the first connection part and the second connection part are connected to each other by the fixation bolt; and   the torsion spring is sleeved on the fixation bolt, a first torsion arm of the torsion spring abuts against the base, and a second torsion arm of the torsion spring abuts against the snap cover to apply an elastic force to the snap cover to rotate the snap cover towards the base.   
     
     
         26 . The air handling unit of  claim 25 , wherein:
 the first connection part includes two lugs separated from each other and each being provided with a first through hole;   the snap cover includes a front panel and two side panels arranged at two sides of the front panel, respectively;   the second connection part includes two second through holes each arranged on a respective one of the two side panels; and   the fixation bolt penetrates through the first through hole and the second through hole.   
     
     
         27 . The air handling unit of  claim 26 , wherein:
 the front panel includes two avoidance grooves at the two sides of the front panel, respectively, and configured to avoid the two lugs, respectively; and   the two lugs are disposed between the two side panels.   
     
     
         28 . The air handling unit of  claim 24 , wherein:
 the first connection mechanism includes the snap seat;   the base includes a first lock member; and   the second connection mechanism further includes a lock mechanism including a second lock member, a connection member, and a grip, the second lock member is located on a side of the snap cover facing the base, one end of the connection member is connected with the second lock member, another end of the connection member penetrates through the snap cover and is connected with the grip, and the grip is configured to drive the second lock member to be locked or unlocked with the first lock member.   
     
     
         29 . The air handling unit of  claim 28 , wherein:
 the connection member includes a rotation shaft, two ends of the rotation shaft are connected to the second lock member and the grip, respectively;   the first connection part and the first lock member are disposed at upper and lower ends of the base, respectively; and   the second lock member and the grip are both of a long strip structure and have a same length direction.   
     
     
         30 . The air handling unit of  claim 18 , wherein one of the first connection mechanism and the second connection mechanism comprises a connection arm, another one of the first connection mechanism and the second connection mechanism includes a fitting hole, and the connection arm extends towards the fitting hole and is connected to the fitting hole by a fastener. 
     
     
         31 . The air handling unit of  claim 17 , further comprising:
 a filter screen plate removably connected to the first positioning frame adjacent to an air intake side of the heat exchange cabinet.   
     
     
         32 . The air handling unit of  claim 31 , wherein the first positioning frame is provided with a plurality of magnets along a circumferential direction, and the filter screen plate is connected to the plurality of magnets.