Abstract A heat exchanger in which a continuous, integral, formed sheet of heat exchange material such as heat conducting metal is shaped to provide a first area and a second area spaced from each other to provide a fluid flow space and a third area in this flow space provided with displaced turbulence producing portions in the flow space. Because all of these areas are parts of one integral sheet a preferred embodiment of the heat exchanger is the tubular concentric type in which the first and second areas are formed as concentric cylinders and the third area also has a curved cross section and occupies the space between these two areas. This invention also includes a method of making a heat exchanger of the tubular type in which a metal sheet is provided with spaced apart first and second areas and an intermediate third area having turbulence promoting projections and then rolling the sheet upon itself to form a tube of at least three concentric parts in which the inner and outer parts are solid and spaced from each other to provide an annular flow space and the third part is located in this space and contains the turbulence promoting projections to comprise a turbulator.
For use in a heat exchanger, means for disposing a first fluid to have heat exchange with a second fluid, comprising: a continuous, integral, formed sheet of heat exchange material having a first area, a second area spaced therefrom to provide a laterally bounded fluid flow space therebetween having inlet and outlet ends, and a third area in said flow space between said first and second areas having a first side portion contiguous with said first area and an opposite side portion contiguous with said second area, means providing displaced turbulence producing portions of said sheet at said third area in said flow space, and means adjacent said ends joinIng said first and second areas in fluid confining relationship enclosing said third area for causing said sheet to define an enclosed fluid passage between said inlet and outlet ends for conducting a first fluid to have heat transfer association with a second fluid through said formed sheet.
Claim 2
Dependent Claim
157 words
For use in a heat exchanger, means for disposing a first fluid to have heat exchange with a second fluid, comprising: a continuous, integral, formed sheet of heat exchange material having a first area, a second area spaced therefrom to provide a laterally bounded fluid flow space therebetween having inlet and outlet ends, and a third area in said flow space between said first and second areas having a first side portion contiguous with said first area and an opposite side portion contiguous with said second area, means providing displaced turbulence producing portions of said sheet at said third area in said flow space, and means adjacent said ends joinIng said first and second areas in fluid confining relationship enclosing said third area for causing said sheet to define an enclosed fluid passage between said inlet and outlet ends for conducting a first fluid to have heat transfer association with a second fluid through said formed sheet.
Claim 3
Dependent Claim
37 words
The heat exchanger of claim 1 wherein there are provided a plurality of said displaced portions on opposite sides of said third area, some of said portions engaging said first area and others engaging said second area.
Claim 4
Dependent Claim
21 words
The heat exchanger of claim 2 wherein said displaced portions comprise projections having flat peaks engaging said first and second areas.
Claim 5
Dependent Claim
34 words
The heat exchanger of claim 1 wherein said means joining said first and second areas comprise flange areas on said formed sheet engaging adjacent portions of said sheet to enclose substantially said third area.
Claim 6
Dependent Claim
25 words
The heat exchanger of claim 1 wherein said heat exchanger is substantially tubular with said first, second and third areas being substantially concentric cylindrical sections.
Claim 7
Dependent Claim
52 words
The heat exchanger of claim 5 wherein there are provided a plurality of said displaced portions on opposite sides of said third area, some of said portions engaging said first area and others engaging said second area, and said displaced portions comprise projections having flat peaks engaging said first and second areas.
Claim 8
Dependent Claim
34 words
The heat exchanger of claim 6 wherein said means joining said first and second areas comprise flange areas on said formed sheet engaging adjacent portions of said sheet to enclose substantially said third area.