Cooler for heater-containing box

Abstract

There is provided a cooler for heater-containing box in which an outside air fan for carrying air on an outside air path and an inside air fan for carrying air on an inside air path are arranged such that a rotating shaft of each fan is in parallel with an air intake direction, and a heat exchanger for exchanging sensible heat of outside air and inside air is arranged between the outside air path and the inside air path such that a suction port at a longitudinal air-path side of the heat exchanger is aligned with a blowout port of the fan. The cooler for heater-containing box capable of making the depth thinner can be provided.

1 . A cooler for heater-containing box comprising:
 an inside air path taking air of the box containing heating element and circulating the air by returning the air into the box containing heating element;
 an outside air path taking outside air and exhausting the outside air; 
 an outside air fan for carrying the air of the outside air path; 
 an inside air fan for carrying the air of the inside air path; 
 a heat exchanger for exchanging sensible heat between the outside air and the inside air; and 
 a control unit for controlling operation of the outside air fan and the inside air fan, 
 wherein the outside air fan and the inside air fan are arranged such that a rotating shaft of the outside air fan is in parallel with an air intake direction and a rotating shaft of the inside air fan is in parallel with an air intake direction, and 
 the heat exchanger is arranged between the outside air path and the inside air path such that one of suction ports provided at a longitudinal air-path side of the heat exchanger is aligned with a blowout direction of the outside air fan, and the other of the suction ports is aligned with a blowout direction of the inside air fan. 
   
     
     
         2 . The cooler for heater-containing box according to  claim 1 ,
 wherein a plurality of the cooling devices for box containing heating element are provided in accordance with heat generation of the heating element contained in the box containing heating element.   
     
     
         3 . The cooler for heater-containing box according to any one of  claims 1  and  2 ,
 wherein the cooler for heater-containing box has a box, and   a blowout port of the heat exchanger is aligned with an inside air blowout port and an outside air blowout port which are arranged in the box.   
     
     
         4 . The cooler for heater-containing box according to  claim 2 ,
 wherein a plurality of the cooling devices for box containing heating element are provided,   an outside-air-via-hole is provided between the outside air fans of the plurality of cooling devices for box containing heating element, in which an outside-air-temperature-detector for detecting an outside air temperature is arranged, and   an inside-air-via-hole is provided between the inside air fans of the plurality of cooling devices for box containing heating element, in which an inside-air-temperature-detector for detecting an inside air temperature is arranged.   
     
     
         5 . The cooler for heater-containing box according to any one of  claims 1  and  2 ,
 wherein a heat insulating material is arranged within the cooler for heater-containing box, the heat insulating material forming a guide shape which determines a position of the heat exchanger.   
     
     
         6 . The cooler for heater-containing box according to any one of  claims 1  and  2 , further comprising:
 a heat insulating material having a groove for wiring abutted against the heat exchanger.   
     
     
         7 . The cooler for heater-containing box according to  claim 6 ,
 wherein the heat insulating material has an operating window on a surface which is in contact with the heat exchanger, and   a connector of a wiring is detachable through the operating window without removing the heat insulating material.   
     
     
         8 . The cooler for heater-containing box according to any one of  claims 1  and  2 ,
 wherein a peaked member is attached to the outside air blowout port.   
     
     
         9 . The cooler for heater-containing box according to any one of  claims 1  and  2 , further comprising:
 a fixing plate for fixing an orifice for rectification and the outside air fan or the inside air fan,   wherein the outside air fan or the inside air fan, and the orifice are fixed to the fixing plate.   
     
     
         10 . The cooler for heater-containing box according to  claim 9 ,
 wherein the fixing plate is shaped to be top-bottom and left-right symmetric, and an attaching portion of the fixing plate is U-shaped.   
     
     
         11 . The cooler for heater-containing box according to any one of  claims 1  and  2 ,
 wherein a reinforcing member is provided at an edge portion of an upper surface or a side surface of the box, and   the reinforcing member also serves as a fixing member.   
     
     
         12 . The cooler for heater-containing box according to any one of  claims 1  and  2 ,
 wherein a removable panel forming a plane of the cooler for heater-containing box has a drop prevention member.   
     
     
         13 . The cooler for heater-containing box according to any one of  claims 1  and  2 ,
 wherein an exhaust heat hole is provided at an inside wall surface of the control unit.   
     
     
         14 . The cooler for heater-containing box according to any one of  claims 1  and  2 ,
 wherein the control unit has a built-in printed substrate, and   the printed substrate has a fixing member also serving as a handle.   
     
     
         15 . The cooler for heater-containing box according to any one of  claims 1  and  2 ,
 wherein the control unit has a built-in printed substrate, and   the printed substrate has a fixing member also serving as a radiating member.   
     
     
         16 . The cooler for heater-containing box according to any one of  claims 1  and  2 ,
 wherein an exhaust outlet is provided downwind of the outside air fan,   a bowl-like drain pan having an inclined surface toward the exhaust outlet is provided at a bottom surface of the box, and   water is pumped up along the inclined surface of the drain pan by blasting air of the outside air fan so that the water can be exhausted via the exhaust outlet which is located above a bottom of the drain pan.   
     
     
         17 . The cooler for heater-containing box according to  claim 16 ,
 wherein the exhaust outlet is provided in a direction other than downwind of the outside air fan, and   the drain pan has a drain pan groove leading the exhausting water to the exhaust outlet so that the water can be exhausted also via the exhaust outlet provided in the direction other than downwind.   
     
     
         18 . The cooler for heater-containing box according to  claim 1 ,
 wherein the heat exchanger has a substantially rectangular first heat transfer plate and a substantially rectangular second heat transfer plate,   the first heat transfer plate includes:
 a plurality of substantially L-shaped and hollow convex-shaped air-path-retaining-members; 
 a linear first shielding member and substantially L-shaped second shielding member which are formed at a peripheral portion; 
 a plurality of substantially L-shaped air paths, a heat transfer surface, and an inlet and an outlet provided at both ends of the air path, which are formed of the plurality of air-path-retaining-members, a plurality of the first shielding members, and a plurality of the second shielding members; 
   an opening retaining member provided at an edge portion of the air-path-retaining-member located at the inlet and the outlet;   a sealing member folded back to be substantially perpendicular to the heat transfer surface at an peripheral edge portion of the first heat transfer plate; and   a first opening provided at a location of the sealing member where the inlet and the outlet of the air path are symmetrical with respect to a central point of the heat transfer plate,   wherein the second heat transfer plate has a similar shape to the first heat transfer plate, and has a plurality of side-surface-retaining-members in longitudinal directions of the first shielding member and the second shielding member,   the first heat transfer plate and the second heat transfer plate are integrally formed using a sheet,   the first transfer plate and the second transfer plate are alternately stacked with rotating 180 degree such that the inlet and the outlet of the first heat transfer plate has an opposite positional relationship to the inlet and the outlet of the second heat transfer plate,   a first air path and a second air path are alternately formed by stacking the first heat transfer plate and the second heat transfer plate, and   the air-path-retaining-members at a portion, where a fluid flowing on the first air path and the second air path forms a counter current, have a curved shape, and are arranged at substantially equal intervals.   
     
     
         19 . The cooler for heater-containing box according to  claim 18 ,
 wherein the air-path-retaining-members at a portion, where the fluid flowing at the first air path and the second air path forms a counter current, are arranged at irregular intervals.   
     
     
         20 . The cooler for heater-containing box according to  claim 19 ,
 wherein among the plurality of substantially L-shaped air paths, the air-path-retaining-members are arranged at irregular intervals such that an air path having a short air-path length at a side of the first shielding member has a narrow air-path width, and an air path having a long air-path length at a side of the second shielding member has a wide air-path width.   
     
     
         21 . The cooler for heater-containing box according to any one of  claims 19  and  20 ,
 wherein the air-path-retaining-members are arranged at irregular intervals so as to reduce a air flow difference of the plurality of substantially L-shaped air paths in accordance with a shape of the air paths provided in front of and at the back of a carrying member blowing air to the heat exchanger, or the heat exchanger.   
     
     
         22 . The cooler for heater-containing box according to  claim 21 ,
 wherein the air-path-retaining-members are arranged at irregular intervals such that among the plurality of substantially L-shaped air paths, an air path having a short air-path length at the side of the first shielding member has a wide air-path width, and an air path having a long air-path length at the side of the second shielding member has a narrow air-path width.   
     
     
         23 . The cooler for heater-containing box according to  claim 21 ,
 wherein the air-path-retaining-members are arranged at irregular intervals such that among the plurality of substantially L-shaped air paths, an air path at a central portion has a narrow air-path width, and the air path having a short air-path length at the side of the first shielding member and the air path having a long air-path length at the side of the second shielding member have wide air-path widths.   
     
     
         24 . The cooler for heater-containing box according to any one of  claims 18  and  19 ,
 wherein the side-surface-retaining-member is arranged at locations serving as both ends of the first shielding member and corners in a longitudinal direction of the second shielding member, which are formed at the second heat transfer plate, and as an edge portion of an opening of the first heat transfer plate adjacent thereto, and   at the both ends of the first shielding member and at both ends of the second shielding member which is located opposite to the first shielding member, an upper surface of the first shielding member of the first heat transfer plate is abutted against a lower surface of the second shielding member of the second heat transfer plate, an upper surface of the second shielding member of the first heat transfer plate is abutted against a lower surface of the first shielding member of the second heat transfer plate, and an upper surface of the side-surface-retaining-member is abutted against lower surfaces of the first shielding member and the second shielding member of the first heat transfer plate.   
     
     
         25 . The cooler for heater-containing box according to any one of  claims 18  and  19 ,
 wherein at least one peripheral-air-path-retaining-member is provided at portions which do not face side surfaces of the first shielding member and the second shielding member formed at the first heat transfer plate, and   
       the peripheral-air-path-retaining-member is abutted against the first shielding member and the second shielding member formed at the second heat transfer plate located therebelow. 
     
     
         26 . The cooler for heater-containing box according to any one of  claims 18  and  19 ,
 wherein the sealing members formed at the peripheral edge portions of the first heat transfer plate and the second heat transfer plate are folded back to have a length longer than an air-path height with respect to the heat transfer surface, and   
       the sealing members below the inlet and the outlet are provided with a second opening. 
     
     
         27 . The cooler for heater-containing box according to  claim 26 ,
 wherein the first opening and the second opening are formed such that a height of the opening between the heat transfer surface and the edge portion of the first opening or the second opening is greater than an air-path height in the inlet and the outlet when the first heat transfer plates and the second heat transfer plates are alternately stacked.