Heat exchanger, electric control box and air conditioning system

An electric control box, comprising a box body and a heat exchanger, wherein the heat exchanger is arranged on the box body, and the heat exchanger is configured to dissipate heat from the electric control box;

• and
• wherein the heat exchanger comprises:
• a heat exchanging body, defining a plurality of first micro-channels and a plurality of second micro-channels;
• and
• a fluid-collecting tube assembly, comprising a first fluid-collecting tube and a second fluid-collecting tube, wherein the first fluid-collecting tube defines a first fluid-collecting channel, the first fluid-collecting channel is configured to provide a first cooling medium to the plurality of first micro-channels and/or to collect the first cooling medium that flows through the plurality of first micro-channels;
• the second fluid-collecting tube defines a second fluid-collecting channel, the second fluid-collecting channel is configured to provide a second cooling medium to the plurality of second micro-channels and/or to collect the second cooling medium that flows through the plurality of second micro-channels, and heat is exchanged between the first cooling medium flowing through the plurality of first micro-channels and the second cooling medium flowing through the plurality of second micro-channels;
• wherein the heat exchanging body comprises a plate body, the plurality of first micro-channels and the plurality of second micro-channels are arranged alternately in a same row in the plate body.

An air conditioning system, comprising:

• a compressor, a four-way valve, an outdoor heat exchanger, an indoor heat exchanger and a heat exchanger, wherein the heat exchanger is disposed between the outdoor heat exchanger and the indoor heat exchanger, the compressor is configured to provide a circulating cooling medium flowing between the outdoor heat exchanger and the indoor heat exchanger through the four-way valve;
• and
• wherein the heat exchanger comprises:
• a heat exchanging body, defining a plurality of first micro-channels and a plurality of second micro-channels;
• and
• a fluid-collecting tube assembly, comprising a first fluid-collecting tube and a second fluid-collecting tube, wherein the first fluid-collecting tube defines a first fluid-collecting channel, the first fluid-collecting channel is configured to provide a first cooling medium to the plurality of first micro-channels and/or to collect the first cooling medium that flows through the plurality of first micro-channels;
• the second fluid-collecting tube defines a second fluid-collecting channel, the second fluid-collecting channel is configured to provide a second cooling medium to the plurality of second micro-channels and/or to collect the second cooling medium that flows through the plurality of second micro-channels, and heat is exchanged between the first cooling medium flowing through the plurality of first micro-channels and the second cooling medium flowing through the plurality of second micro-channels;
• wherein the heat exchanging body comprises a plate body, the plurality of first micro-channels and the plurality of second micro-channels are arranged alternately in a same row in the plate body.