Microchannel heat exchanger group and air conditioning system having same

Abstract

A microchannel heat exchanger group and an air conditioning system having the same are provided. The microchannel heat exchanger group includes a plurality of fins and a plurality of rows of first flat tubes and a plurality of rows of second flat tubes; the microchannel heat exchanger group includes at least a first heat exchanger and a second heat exchanger; the first heat exchanger and the second heat exchanger are independent of each other; the first heat exchanger includes the first flat tubes; the second heat exchanger includes the second flat tubes; insertion slots include first insertion slots and second insertion slots; the first flat tubes are inserted into the first insertion slots; and the second flat tubes are inserted into the second insertion slots. The air conditioning system includes the microchannel heat exchanger group.

What is claimed is: 
     
         1 . A microchannel heat exchanger group, comprising
 a plurality of fins, wherein the plurality of fins are arranged in a plurality of rows, and each of the plurality of fins are provided with insertion slots;   wherein the microchannel heat exchanger group further comprises at least a first heat exchanger and a second heat exchanger, the first heat exchanger comprises a plurality of first flat tubes, the second heat exchanger comprises a plurality of second flat tubes, the plurality of first flat tubes and the plurality of second flat tubes are arranged in a plurality of layers along a length direction of each of the plurality of fins, the plurality of first flat tubes and the plurality of second flat tubes are arranged in a plurality of rows along a width direction of each of the plurality of fins; and   the insertion slots comprise a first insertion slot and a second insertion slot, the plurality of first flat tubes are inserted into the first insertion slot, the plurality of second flat tubes are inserted into the second insertion slot, and the plurality of first flat tubes are separated from the plurality of second flat tubes.   
     
     
         2 . The microchannel heat exchanger of  claim 1 , wherein the plurality of first flat tubes and the plurality of second flat tubes alternate with each other along the length direction of the plurality of fins. 
     
     
         3 . The microchannel heat exchanger group of  claim 2 , wherein the first heat exchanger comprises a first connector assembly and a second connector assembly,
 each of the plurality of first flat tubes, the first connector assembly and the second connector assembly are connected to and in communication with each other, a first circulation path is defined by a refrigerant flowing into one of the plurality of first flat tubes from the first connector assembly, and flowing out from the second connector assembly; and   the second heat exchanger comprises a third connector assembly and a fourth connector assembly, each of the plurality of second flat tubes, the third connector assembly and the fourth connector assembly are connected to and in communication with each other, a second circulation path is defined by the refrigerant flowing into one of the plurality of first flat tubes from the third connector assembly, and flowing out from the fourth connector assembly;   wherein a group of the first circulation path and a group of the second circulation path and are isolated from one another, the number of the first circulation path in the group of the first circulation path is defined as M, the number of the second circulation path in the group of the second circulation path is defined as N, and both the number M of the first circulation path in the group of the first circulation path and the number N of the second circulation path in the group of the second circulation path are natural numbers equal to or greater than 1.   
     
     
         4 . The microchannel heat exchanger group of  claim 3 , wherein the number M of the first circulation path in the group of the first circulation path and the number N of the second circulation path in the group of the second circulation path satisfy a following formula: M=N. 
     
     
         5 . The microchannel heat exchanger group of  claim 1 , wherein the insertion slots are disposed at a same side of the plurality of fins, the insertion slots at adjacent rows of the plurality of fins alternate with each other; optionally wherein both sides of each of the plurality of fins are provided with the insertion slots, and the insertion slots disposed at both sides of each of the plurality of fins alternate with each other. 
     
     
         6 . The microchannel heat exchanger group of  claim 3 , wherein the first connector assembly comprises a first distributor and a plurality of first capillary tubes being connected to and in communication with the first distributor, both ends of each of the plurality of first capillary tubes are connected to and in communication with the first distributor and corresponding one of the plurality of first flat tubes, respectively; and
 the third connector assembly comprises a second distributor and a plurality of second capillary tubes being connected to and in communication with the second distributor, both ends of each of the plurality of second capillary tubes are connected to and in communication with the second distributor and corresponding one of the plurality of second flat tubes, respectively.   
     
     
         7 . The microchannel heat exchanger group of  claim 6 , wherein the second connector assembly comprises a first collecting tube and a plurality of first connecting tubes being connected to and in communication with the first collecting tube, both ends of each of the plurality of the first connecting tubes are connected to and in communication with the first collecting tube and corresponding one of the plurality of first flat tubes; and
 the fourth connector assembly comprises a second collecting tube and a plurality of second connecting tubes being connected to and in communication with the second collecting tube, both ends of each of the plurality of the second connecting tubes are connected to and in communication with the second collecting tube and corresponding one of the plurality of second flat tubes.   
     
     
         8 . The microchannel heat exchanger group of  claim 1 , wherein both the plurality of first flat tubes and the plurality of second flat tubes are arranged in a plurality of rows, the first heat exchanger comprises a plurality of first bending tubes, the second heat exchanger comprises a plurality of second bending tubes, the first flat tubes arranged in adjacent rows of the plurality of first flat tubes are connected to and in communication with each other via corresponding one of the plurality of first bending tubes, and the plurality of first bending tubes and the plurality of first flat tubes are separately arranged; and the second flat tubes arranged in adjacent rows of the plurality of second flat tubes are connected to and in communication with each other via corresponding one of the plurality of second bending tubes, and the plurality of second bending tubes and the plurality of second flat tubes are separately arranged. 
     
     
         9 . The microchannel heat exchanger group of  claim 6 , further comprising an adapter, the adapter is disposed between the plurality of first capillary tubes and the plurality of first flat tubes and between the plurality of second capillary tubes and the plurality of second flat tubes, and a tube orifice of the adapter opposite to the plurality of first flat tubes matches with a tube orifice of corresponding one of the plurality of first flat tube and another tube orifice of the adapter opposite to the plurality of second flat tubes matches with a tube orifice of corresponding one of the plurality of second flat tube. 
     
     
         10 . An air conditioning system, comprising the microchannel heat exchanger group of  claim 1 .