Multitubular rotary heat exchanger
AssigneeYoshino Gypsum Co., Ltd.
InventorsTomonori Yoshida, Takeshi Takenaka
Life of this patent
Estimating the term…
Abstract
A multitubular rotary heat exchanger has a stationary shielding unit. The shielding unit is positioned in close proximity to a tube plate outside a heating or cooling region. A stationary surface of the shielding unit is positioned in opposition to and in close proximity to an end opening of a heat transfer tube moving in an upper zone of the heating or cooling region, thereby transiently reducing or restricting the flow rate of the thermal medium fluid flowing through the heat transfer tube moving in the upper zone.
Claims20
A multitubular rotary heat exchanger having a rotatable shell, tube plates closing both end portions of the shell, and a number of heat transfer tubes disposed in an inner space of the shell, wherein a heating or cooling region for heating or cooling a processed matter introduced into the inner space is formed in the shell, each end portion of each of said tubes is carried by a corresponding one of the tube plates, and each end portion of the tubes is open on an outside surface of the corresponding one of the tube plates or in its vicinity, and wherein the shell, the tube plates, and the tubes are rotated as a whole to heat or cool the processed matter by heat exchange between a thermal medium fluid in the tubes and the processed matter in the heating or cooling region, comprising:
- a stationary shielding unit for transiently reducing a flow rate of the thermal medium fluid flowing through said heat transfer tubes while the tubes move in an upper zone of said heating or cooling region,
- wherein said shielding unit is positioned in the vicinity of at least one of said tube plates outside said heating or cooling region and is provided with a stationary surface which restricts or limits a flow of said thermal medium fluid induced into an end opening of each of the tubes or the fluid effluent therefrom, and
- wherein said stationary surface is in close proximity to and in opposition to said end opening of each of the tubes moving in said upper zone and is separated apart from the end opening of each of the tubes moving in a lower zone of said heating or cooling region.
A heating or cooling method for heating or cooling a processed matter with use of a multitubular rotary heat exchanger having a rotatable shell closed at both end portions by tube plates and a number of heat transfer tubes disposed in an inner space of the shell, wherein a heating or cooling region for heating or cooling the processed matter fed to the inner space is formed in the shell;
- wherein each end portion of each of said tubes is carried by the tube plates, and each end portion is open on an outside surface of the tube plates or in its vicinity;
- and wherein the shell, the tube plates, and the tubes are rotated as a whole to heat or cool the processed matter by heat exchange between a thermal medium fluid in the tubes and the processed matter in the heating or cooling region, comprising:
- positioning a stationary surface of a shielding unit in the vicinity of at least one of said tube plates outside said heating or cooling region so as to be in close proximity to and in opposition to an end opening of each of the tubes moving in an upper zone of said heating or cooling region, for restricting or limiting a flow rate of said thermal medium fluid introduced into said end opening of each of the tubes moving in the upper zone or the fluid effluent therefrom, and
- separating said surface apart from said end opening of each of the tubes moving in a lower zone of said heating or cooling region, for releasing said restriction or limitation of the flow rate of the thermal medium fluid.
Dependencies are inferred from the claim text.