Refrigeration apparatus

Abstract

This application provides a refrigeration apparatus using a main fan to cool an electronic control device while meeting heat exchange requirements of a heat exchanger. By arranging a first air duct and a second air duct in parallel, and controlling a relationship between a cross-sectional area of a first air duct inlet and a cross-sectional area of a second air duct outlet, and a relationship between a cross-sectional area of a second air duct inlet and the cross-sectional area of the second air duct outlet, air flowing into the first air duct after heat exchange with a refrigerant in the heat exchanger and air in the second air duct after heat exchange with the electronic control device are merged in the first air duct, and are discharged from the refrigeration apparatus through a first air duct outlet.

What is claimed is: 
     
         1 . A refrigeration apparatus comprising:
 a heat exchanger;   a first air duct with an air inlet disposed corresponding to the heat exchanger;   a fan disposed at an air outlet of the first air duct, corresponding to the heat exchanger across the first air duct;   a second air duct with an air outlet opened on a side of the first air duct and an air inlet open to an atmosphere; and   an electronic control device disposed in the second air duct.   
     
     
         2 . The refrigeration apparatus according to  claim 1 , wherein
 the first air duct and the second air duct are perpendicular to each other.   
     
     
         3 . The refrigeration apparatus according to  claim 1 , wherein
 the air outlet of the second air duct is opened on the side of the first air duct while being immediately adjacent to the heat exchanger.   
     
     
         4 . The refrigeration apparatus according to  claim 3 , wherein the electronic control device further includes
 an electronic control unit and heat dissipation fins disposed around the electronic control unit.   
     
     
         5 . The refrigeration apparatus according to  claim 1 , wherein the heat dissipation fins include
 air duct-parallel heat dissipation fins disposed parallel to an airflow direction in the second air duct, and   air duct flow-guiding heat dissipation fins disposed at a predetermined angle relative to the airflow direction in the second air duct.   
     
     
         6 . The refrigeration apparatus according to  claim 5 , wherein the air duct flow-guiding heat dissipation fins are disposed on a side of the electronic control unit closer to the air inlet of the second air duct. 
     
     
         7 . The refrigeration apparatus according to  claim 1 , wherein a cross-sectional area X of the air inlet of the first air duct and a cross-sectional area Y of the air outlet of the second air duct satisfy a mathematical relationship of Y<0.05X. 
     
     
         8 . The refrigeration apparatus according to  claim 7 , wherein a cross-sectional area of the air inlet of the second air duct is greater than a cross-sectional area of the air outlet of the second air duct. 
     
     
         9 . The refrigeration apparatus according to  claim 1 , wherein a cross-sectional area of the air inlet of the second air duct is greater than a cross-sectional area of the air outlet of the second air duct. 
     
     
         10 . The refrigeration apparatus according to  claim 1 , further comprising:
 a filter screen disposed at the air inlet of the second air duct.   
     
     
         11 . The refrigeration apparatus according to  claim 1 , further comprising:
 a flow guide plate disposed at the air outlet of the second air duct while deflecting toward the fan and configured to guide air from the second air duct and air from the first air duct.