[특허]Transport refrigeration unit

Westinghouse Electric Corp.

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Transport refrigeration unit

국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B60H-003/04
미국특허분류(USC)	062/239; 062/244; 062/263
출원번호	US-0661556 (1984-10-17)
발명자 / 주소	Anderson, Lowell M. Volk, Rodney H.
출원인 / 주소	Westinghouse Electric Corp.
대리인 / 주소	Arenz, E. C.
인용정보	피인용 횟수 : 20 인용 특허 : 4

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The transport refrigeration unit (FIG. 5) includes a generally planar main frame 20, 22, 24 which supports a base frame 34 for carrying the compressor 54 and engine 56, and with an evaporator plenum 58 and a condenser plenum 60 in side-by-side, but spaced apart relation to provide a channel 62 therebetween. A heavy intermediate upper support member including wall 44 supports a bearing and support housing 68 which carries the shaft upon which is mounted, in cantilevered relation, both the evaporator blower 72 and the condenser blower 74. The plate fins 66 of the condenser are in planes parallel to the plane of the main frame with the air for the condenser entering the condenser plenum 60 from the side, rather than the front. With the arrangement as shown, all of the shafts carrying pulleys for the drive train to the blowers are parallel with each other.

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1. In a transport refrigeration unit adapted to be mounted on the front face of a transport trailer or the like and having a power pack including at least an internal combustion engine for driving a refrigerant compressor, and including a plate fin refrigerant condenser and a refrigerant evaporator, a construction and structural arrangement of elements for the unit comprising: a rectangular planar main frame including top, bottom, and opposite side members and having a horizontal cross member at a level dividing the main frame into an upper major portion area and a lower minor portion area; forwardly projecting frame means at the base of said main frame for supporting said engine and compressor forwardly of said lower minor portion area, said engine and compressor being disposed with their crankshafts generally horizontal and parallel to the plane of said main frame; an evaporator plenum and a condenser plenum in generally side-by-side, but spaced apart, relation and projecting forwardly in said upper portion area, said spaced apart relation defining a forwardly-open channel between the plenums; a condenser blower and an evaporator blower on a common shaft extending horizontally and in a plane substantially parallel with the plane of said main frame; a bearing and support housing for said shaft inside said evaporator plenum and supported by the plenum wall defining one side of said channel; said evaporator blower being located in said evaporator plenum, and said condenser blower being located in said channel and having an inlet in communication with said condenser plenum. 2. An arrangement according to claim 1 wherein: said plate fin condenser is disposed in said condenser plenum with the plate fins thereof being substantially parallel to the plane of said main frame so that air flow through said condenser is generally parallel to the plane of said main frame. 3. An arrangement according to claim 1 wherein: said bearing and supporting housing provides the sole support for said shaft so that both said blowers are cantilever supported from the said housing. 4. An arrangement according to claim 3 including: a blower pulley on said shaft; a driving pulley driven by said power pack, said pulleys being in planes at least parallel to each other; and belt means connecting said pulleys. 5. An arrangement according to claim 4 including: belt tensioner means located in said channel intermediate said pulleys. 6. An arrangement according to claim 5 wherein: said belt tensioner means comprises a pair of idler pulleys on a jackshaft; said belt means comprises one belt between one of said pair and said blower pulley, and another belt between the other of said pulleys and said driving pulley; and said belt tensioner means is supported for forward or rearward positional change for adjusting the tensions of the belts simultaneously. 7. An arrangement according to claim 2 wherein: said evaporator is disposed in an inclined disposition in said evaporator plenum with its center of gravity relatively close to said plane of said main frame. 8. An arrangement according to claim 7 wherein: said evaporator plenum includes a molded plastic interior liner, generally complementary in shape to the exterior of said evaporator plenum, but smaller, to provide a space between said liner and plenum exterior to receive thermal insulation. 9. An arrangement according to claim 8 wherein: said liner includes a part thereof forming a part of the housing for said evaporator blower. 10. An arrangement according to claim 7 wherein: said evaporator blower is a double-width, double-inlet blower in a scroll-shape blower housing having an outlet, said outlet being in direct communication with the interior of said trailer. 11. An arrangement according to claim 10 wherein: said outlet has a greater width than height, said width being a minor portion of the width of said unit, and said outlet width is offset from the vertical centerline of said unit to a degree that at least the major portion of said outlet width is to the side of said centerline.

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Transport refrigeration unit

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Transport refrigeration unit

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