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A heat exchanger using thermoelectric structures is provided for cooling a heat generating component of an electronic device. The heat exchanger includes a row of spaced passages, for example, formed by two or more separate tubes or a single coiled tube, for carrying a first cooling fluid. The heat

A heat exchanger using thermoelectric structures is provided for cooling a heat generating component of an electronic device. The heat exchanger includes a row of spaced passages, for example, formed by two or more separate tubes or a single coiled tube, for carrying a first cooling fluid. The heat exchanger further includes a thermoelectric structure disposed between adjacent spaced passages and exposed to a second cooling fluid. In one embodiment, the heat exchange also includes fins disposed between the same adjacent spaced passages so that the thermoelectric structure is disposed between the adjacent passages and the fins.

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A heat exchanger using thermoelectric structures is provided for cooling a heat generating component of an electronic device. The heat exchanger includes a row of spaced passages, for example, formed by two or more separate tubes or a single coiled tube, for carrying a first cooling fluid. The heat

A heat exchanger using thermoelectric structures is provided for cooling a heat generating component of an electronic device. The heat exchanger includes a row of spaced passages, for example, formed by two or more separate tubes or a single coiled tube, for carrying a first cooling fluid. The heat exchanger further includes a thermoelectric structure disposed between adjacent spaced passages and exposed to a second cooling fluid. In one embodiment, the heat exchange also includes fins disposed between the same adjacent spaced passages so that the thermoelectric structure is disposed between the adjacent passages and the fins. ivot axis offset from and parallel to the main pivot axis, the latching means automatically securing the rear portions of the mounting arms to the rear portion of the tractor frame when the rear portions of the mounting arms are raised to a desired position. 2. The combination of claim 1 wherein the latching means comprises at least one latch hook pivotally mounted to the rear portion of one of the mounting arms, the latch hook having a hook-shaped forward portion adapted to capture and hold onto the rear portion of the tractor frame. 3. The combination of claim 2 wherein the spring biased latching means comprises a pair of laterally spaced latch hooks each pivotally connected to the rear portions of the mounting arms respectively and having a hook-shaped forward portion adapted to hook onto an upright portion of the tractor frame, and a pair of springs operatively connecting the latch hooks to the mounting arms so as to pivotally bias the latch hooks toward a hooked or latched position in the absence of an opposing force. 4. The combination of claim 3 wherein the springs are coiled tension springs. 5. The combination of claim 3 wherein the latch hooks are elongated and substantially flat latch plates that are identical with each other, substantially parallel to each other, and arranged so as to be remote from a hitch hole on the tractor frame. 6. The combination of claim 3 wherein the hook-shaped forward portion of the latch hook includes a slot adapted to capture a source of vertical support on the rear portion of the tractor frame, a blunt point disposed forward of the slot, a rearwardly and downwardly inclined edge beginning at the blunt point and terminating at a curved edge that leads into the slot. 7. The combination of claim 3 comprising a latch cross bar rigidly connecting the latch hooks such that the latch hooks are pivotally movable in unison, the latch cross bar connecting the latch hooks at points offset from the latch hook pivot axis so as to constitute a lever arm for applying a force in opposition to the biasing force to release the latch hooks from the latched position. 8. The combination of claim 3 comprising a lateral cross member for rigidly connecting the rear portions of the mounting arms together, the cross member including opposite ends attached to the mounting arms respectively and a rearwardly curved central portion therebetween. 9. The combination of claim 3 comprising a generally H-shaped subframe including a pair of spaced apart elongated support legs having upper and lower portions, the lower portions of the legs being rigidly attached respectively to the rear portions of the mounting arms without being attached to a hitch plate and a hitch hole on the tractor frame. 10. The combination of claim 9 comprising a rigid locking tab pivotally attached to one of the support legs for selectively pivoting into engagement with one of the latch hooks so as to prevent pivotal movement of the one of the latch hooks and secure said latch hook in the capturing or latched position. 11. The combination of claim 3 wherein the latch hooks each have a rear portion with a hole formed therethrough for slidably and rotatably receiving a pair of coaxial latch hook pivot shafts rigidly connected to the mounting arms respectively. 12. The combination of claim 3 wherein the forward portion of the mounting arm has a mounting pin opening therein adapted to receive a mounting pin disposed on the tractor frame along the main pivot axis. 13. The combination of claim 12 wherein the mounting pin opening is an elongated slot extending through the mounting arm. 14. The combination of claim 13 wherein the slot in the mounting arm extends downwardly and has a mouth or entrance thereinto at a lower edge of the mounting arm. 15. The combination of claim 14 wherein the pair of mounting arms comprises a pair of substantially flat plates arranged parallel to each other, the plates having an overall L-shaped profile and wherein an elong