RU212260U1 - TUBE HEATING RADIATOR - Google Patents

Abstract

The utility model relates to the field of heat engineering, namely to heating equipment, and can be used in heating systems for residential and public buildings as a heating device. The utility model is aimed at improving the efficiency of heat transfer by increasing the turbulence of the coolant flow due to the presence of inserts in vertical pipes 3 in the form of disks 5 having the shape of hollow truncated cones. This is achieved by the fact that the tubular heating radiator contains the upper 1 and lower 2 horizontal pipes for supplying and discharging the coolant, hermetically connected to each other by vertical pipes 3. In the proposed solution, the horizontal pipes 1 and 2 have a square profile, the vertical pipes 3 are equipped with inserts in the form of a set disks 5 having the shape of hollow truncated cones, oriented downwards with their smaller bases and rigidly connected by diametrically located vertical couplers 6, while the diameter D of the larger base of each disk 5 is equal to the inner diameter of the vertical pipe 3, the diameter of the smaller base of each disk 5 is equal to d and is selected from the range (0.5÷0.9) D , and the step t of the relative placement of disks 5 along the vertical braces 6 is equal to (6÷12)( D - d ). 3 ill.

Description

The utility model relates to the field of heat engineering, namely to heating equipment, and can be used in heating systems for residential and public buildings as a heating device.

Known "Panel of radiant-convective heat transfer" [patent for utility model RU No. 148328 U1, published 27.11.2014 IPC F24H 3/06 (2006.01), F28D 1/02 (2006.1), F28F 1/22 (2006.01)]. The technical solution shows the design of a panel for radiant-convective heat exchange, consisting of parallel vertical tubes connected by horizontal inlet and outlet manifolds, and a heat exchange plate covering them in the form of a truncated wave.

The disadvantage of the known technical solution is the low heat transfer efficiency of the radiator due to the low turbulence of the coolant flow in the vertical tubes due to the absence of turbulators.

The closest technical solution chosen as a prototype is the "Tubular Radiator" [invention HR P20190212 A2, published 08/07/2020 IPC F28D 1/04 (2006/01), F28F 1/00 (2006/01), F16L 41/08 (2006/01), F28F 9/26 (2006/01), F24D 19/00 (2006/01), F28F 21/08 (2006/01), F28F 9/18 (2006/01), B23P 15/26 (2006/01)]. The technical solution shows the design of a radiator consisting of vertical and horizontal pipes of the same diameter, hermetically connected to each other by branch pipes by welding or soldering.

The following set of prototype features coincides with the essential features of the utility model: a tubular heating radiator containing upper and lower horizontal pipes for supplying and discharging coolant, hermetically interconnected by vertical pipes.

The disadvantage of the known technical solution is the low efficiency of heat transfer between the coolant and the heated surface of the heater, which is associated with low turbulence of the coolant flow in vertical pipes.

The utility model is aimed at improving the efficiency of heat transfer by increasing the turbulence of the coolant flow due to the presence of inserts in vertical pipes in the form of disks having the shape of hollow truncated cones.

This is achieved by the fact that the tubular heating radiator contains the upper and lower horizontal pipes for supplying and discharging the coolant, hermetically connected to each other by vertical pipes.

In the proposed solution, the horizontal pipes have a square profile, the vertical pipes are equipped with internal inserts in the form of a set of discs in the form of hollow truncated cones, oriented downward with their smaller bases, and rigidly connected by diametrically located vertical ties, while the diameter D of the larger base of each disc is equal to the inner diameter of the vertical pipe, the diameter of the smaller base of each disk is equal to d and is selected from the range (0.5÷0.9) D , and the step t of the relative placement of the disks along the vertical ties is (6÷12)( D - d ).

The use of a square profile pipe for the upper and lower horizontal pipes simplifies the technology for manufacturing a tubular heating radiator when connecting horizontal and vertical pipes.

The presence of inserts in the form of a set of discs in the form of hollow truncated cones, rigidly connected by diametrically located vertical couplers, in vertical pipes intensifies the turbulence of the coolant flow.

The equality of the diameters of the inner vertical pipe and the larger base of each disk is necessary for rigid fixation of the inserts inside the vertical pipes of the radiator.

The choice of the diameter of the smaller base of each disk d from the range (0.5÷0.9)D is due to the need to maintain a moderate value of hydraulic resistance.

Preservation of a continuous turbulent wake is ensured by choosing the step t of the relative placement of disks along the vertical couplers according to the ratio t =(6÷12)( D - d ).

Thus, the set of distinctive features of the proposed solution provides an increase in the efficiency of heat transfer between the coolant and the heated surface of the tubular heating radiator.

The specified parameters of the inserts, having the form of hollow truncated cones, and their location were confirmed during a series of experiments in the laboratory of the Department of Heat and Gas Supply and Ventilation of the Belarusian State Technical University. V.G. Shukhov.

The design of the utility model is illustrated by graphic material.

In FIG. 1 shows a longitudinal section of a heating radiator; in fig. 2 shows a general view of the insert; in fig. 3 shows a longitudinal section of an insert element having the shape of a hollow truncated cone.

The tubular heating radiator contains upper 1 and lower 2 horizontal pipes, which have a square profile and are hermetically connected to each other by vertical pipes 3. To connect the radiator to the inlet and outlet lines, there are branch pipes 4 at the ends of the horizontal pipes. Vertical pipes 3 are equipped with inserts in the form of a set of disks 5, having the shape of hollow truncated cones and oriented downwards with their smaller bases. Discs 5 are rigidly connected to each other by diametrically located vertical ties 6.

The diameter D of the larger base of the discs 5 is equal to the inner diameter of the vertical pipes 3. The diameter of the smaller base of each disc is d and is selected from the range (0.5÷0.9) D . Along the vertical couplers 6 disks 5 are installed with a step t selected by the ratio (6÷12)( D - d ).

The number of sections (vertical channels) of the radiator is limited only by the technological capabilities of the production equipment.

In FIG. 1 shows a radiator with six vertical channels.

Tubular heating radiator works as follows. From the supply line, the coolant through one of the pipes 4 enters the cavity of the upper horizontal pipe 1, while a plug is installed on the second pipe 4 of the upper horizontal pipe 1. Further, the coolant is distributed along the vertical pipes 3. Moving along the vertical pipes 3, the coolant washes the discs 5. This creates zones of turbulence of the coolant flow in the near-wall region of the vertical pipes 3. This increases the efficiency of heat transfer of the coolant with the heated surface of the vertical pipes 3. Then the coolant is removed through the bottom horizontal pipe 2 and one of the nozzles 4 into the outlet line. Just as with the upper pair of nozzles 4, a plug is installed on one of the nozzles 4 of the lower horizontal pipe 2.

The design of the proposed device will improve the efficiency of heat transfer between the coolant and the heated surface of the tubular heating radiator.

Claims (1)

A tubular heating radiator containing upper and lower horizontal pipes for supplying and discharging a heat carrier, hermetically connected to each other by vertical pipes, characterized in that the horizontal pipes have a square profile, the vertical pipes are equipped with internal inserts in the form of a set of disks having the shape of hollow truncated cones oriented smaller bases down, and rigidly connected by diametrically located vertical couplers, while the diameter D of the larger base of each disk is equal to the inner diameter of the vertical pipe, the diameter of the smaller base of each disk is equal to d and is selected from the range (0.5-0.9) D , and the step t of the relative placement of disks along the vertical couplers is equal to (6-12)( D - d ).

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