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US 5,730,001 AGranted
Absorption type refrigerating machine
AssigneeSanyo Electric Co., Ltd.
InventorMasahiro Furukawa
Life of this patent
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AssigneeSanyo Electric Co., Ltd.
InventorMasahiro Furukawa
Estimating the term…
A plurality of protrusions 32 are formed in a longitudinal direction on the outer surface of a heat transmission pipe, a convex portion 33 and a concave portion 34 adjacent thereto of each of the protrusions 32 are each in the form of a curved surface, the curvature radius of the concave portion 34 is made larger than the curvature radius of the convex portion 33, and a groove 34A is formed in the bottom of the concave portion so that the absorption solution dropping onto the heat transmission pipe 31 flows from the concave portion 34 over the convex portion 33 to the next concave portion 34 smoothly, the shifting of the absorption solution in the concave portion 34 is carried out smoothly, and Marangoni convections generated in the convex portion 33 and the concave portion 34 interfere with each other. The Marangoni convections are caused effectively by an easy entry of the absorption solution into the groove 34A , whereby a large turbulent function is produced in a pipe axial direction, the heat exchange efficiency of the heat transmission pipe 31 is greatly improved and the refrigerant vapor absorption power of the absorber is enhanced.
An improved absorption type refrigerating machine comprising an absorber having at least one heat transmission pipe for cooling an absorption solution external to each heat transmission pipe with cooling water internal to each heat transmission pipe, wherein each heat transmission pipe has a plurality of protrusions formed on the outer surface thereof, wherein each protrusion comprises a convex portion and a concave portion, and wherein the convex portion and the concave portion extend continuously in an axial direction along a corresponding heat transmission pipe, the improvement comprising:
An improved absorption type refrigerating machine comprising an absorber having at least one heat transmission pipe for cooling an absorption solution external to each heat transmission pipe with cooling water internal to each heat transmission pipe, wherein each heat transmission pipe has a plurality of alternating convex and concave portions formed along the outer circumferential surface thereof, and wherein the convex and concave portions extend continuously in an axial direction along a corresponding heat transmission pipe, the improvement comprising:
An improved absorption type refrigerating machine comprising an absorber having at least one heat transmission pipe for cooling an absorption solution external to each heat transmission pipe with cooling water internal to each heat transmission pipe, wherein each heat transmission pipe has a plurality of protrusions formed on the outer surface thereof, wherein each protrusion comprises a convex portion and a concave portion, and wherein the convex portion and the concave portion extend continuously in an axial direction along a corresponding heat transmission pipe, the improvement comprising:
An improved absorption type refrigerating machine comprising an absorber having at least one heat transmission pipe for cooling an absorption solution external to each heat transmission pipe with cooling water internal to each heat transmission pipe, wherein each heat transmission pipe has a plurality of alternating convex and concave portions formed along the outer circumferential surface thereof, and wherein the convex and concave portions extend continuously in an axial direction along a corresponding heat transmission pipe, the improvement comprising:
Dependencies are inferred from the claim text.