SU1334032A1 - Heat exchanger - Google Patents

Description

The invention relates to heat exchangers and can be used in the food and chemical industry for cooling or heating various bulk and plastic materials.

The aim of the invention is to control the intensity of heat exchange along the length of the heat exchanger.

The drawing shows the described heat exchanger.

The heat exchanger comprises a housing I with a jacket 2 for supplying the test-transfer liquid. Case 1 is equipped with a loading 3 and 4 discharge hoppers. Shirt 2 in the lower part has a nozzle 5 for supplying heat transfer fluid, and in the upper part - a pipe) - a side 6 for its removal. Inside the housing 1, a rotor is made rotatably on bearings 7 and is made of an outer tube 8 and cylinders 9-15 each of different lengths located inside coaxially. The pipe 8 has a hollow blade 16 - 19, located at an angle to its axis. Inside the hollow blades, flat partitions 20–23 are installed with a gap 24 in the peripheral part, equal to the gap 25 between the inner walls of the blade and its partition in longitudinal section with the formation of input and output channels. Each blade is equipped with a pair of cylinders connected to the input and output channels of this blade. The annular gap between the cylinder of greater length in each pair and the outer tube 8 is blocked by an annular partition 26. The cylinder of a smaller length of each pair is connected to a flat partition of the corresponding blade. The areas of the annular gaps 27 in the cross section between any two cylinders are equal to the area of the gap 25 between the inner walls of the blade and its partition in cross section. The device is equipped with a drive (not shown) providing rotation of the rotor.

The heat exchanger operates as follows.

The drive turns on, and the rotor starts to rotate in bearings 7 of Koji-Pus 1. When the material is fed into the funnel 3, the blades 16 to 19 move the material along the body to the funnel 4 At the same time as the drive is turned on, the heat transfer

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The fluids through the nozzle 5 and the cylinders, Heat transfer fluid supplied to the cylinder 9 of shorter length, jets over the partition 20, changes its direction of movement at an angle of 90 and through the gaps 25 and 24 enters the cylinder 10 of greater length, flowing the internal surfaces of the blade 16 and is then removed from the heat exchanger. This involves heat exchange between the heat transfer fluid and the material through the walls of the blade 16. In the other blade 18, the heat exchange process is similar to that of the blade 16, but the heat transfer fluid is fed through a longer length of the cylinder 12. , and the withdrawal of waste fluid through a cylinder 11 of shorter length. This prevents the possibility of heat exchange between the introduced into some. or a blade with heat-transfer fluid and a fluid that has been exhausted in adjacent blades, which reduces the influence of the temperature of the liquids of adjacent blades on each other. The heat transfer fluid flowing through the jacket 2 further cools the material.

The use of the invention makes it possible to direct the heat transfer liquid of optimal parameters into any blade independent of the parameters of the liquids of the adjacent blades, and thereby ensure the possibility of controlling the intensity of heat exchange along the length of the heat exchanger. Equality of the areas of annular gaps in the cross section between any two coaxial cylinders with the area of the gap between the inner walls of the blade and the partition in longitudinal section provides for the transfer of heat transfer fluids with constant optimal velocities in them, which contributes to the achievement of the maximum heat transfer coefficient.

In the case of a large number of blades to prevent an increase in the diameter of the main outer tube, the supply and removal of heat transfer fluids can be carried out on both sides of the rotor with the inclusion of a certain number of blades on each side.

3 1334032 Formula of the inventive mannika, between the pipes additionally

A heat exchanger, comprising a housing, is placed a system coaxially with a heating jacket and installed cylinders of different lengths,

inside it is a rotor made in the zi- and the cylinders are connected in pairs

de-coaxially located one in the input and output channels of the other pipes, on the outer of which is the corresponding blade with overlapping

reinforced sloping hollow blades skoltsevogo gap between the outer

longitudinal partitions inside, pipe and cylinder of greater length in

constituting the input and output channels for each pair, and the intersection bore section, differing in that, for each two cylinders is equal to

that, in order to regulate the intensity-passage section of the channel with respect to heat exchange along the length of the heat-supplying blade.

Claims (1)

SUMMARY OF THE INVENTION A heat exchanger comprising a housing with a heating jacket and a rotor installed inside it, made in the form of pipes coaxially arranged in one another, on the outside of which inclined hollow blades with longitudinal walls inside are formed, forming input and output channels, characterized in that, in order to regulate the heat transfer intensity along the length of the heat exchanger, between the pipes there is additionally a system of coaxially arranged cylinders of different lengths, the cylinders being connected in pairs ⁵ to one and the output channels of the corresponding blades with overlapping annular gap between the outer pipe and the cylinder of a larger length of 1p each pair, and the passage section between each two cylinders is equal to the passage section of the channel of the corresponding blade.