RU2795639C1 - Sectional radiator containing helical thermal bridge - Google Patents

Abstract

FIELD: heat engineering.

SUBSTANCE: invention can be used in tubular heat exchangers for heating radiators. In a heating radiator formed by an assembly of sections, each of which includes a heat exchange pipe with a thermal element, the thermal element, which is a spiral helical body coaxial to the heat exchange pipe, is made in the form of a helical plate, simultaneously acting as a thermal bridge crossing the surface of the heat pipe along its length, protruding with its edges beyond the tube surface on both sides of it, dividing the surface of the heat exchange tube into sections and providing the possibility of movement of the medium in a spiral along the inner surface of the heat exchange tube and along the surface of the thermal bridge.

EFFECT: providing increased efficiency of the heat exchanger by increasing the effective area of interaction between the medium in it between the heat exchange media, as well as creating a temperature field with a higher temperature gradient.

1 cl, 6 dwg

Description

The field of technology to which the invention belongs

It is used in heat power engineering, in cooling devices for various industrial purposes.

State of the art

The invention "Sectional radiator" is known (RU 2529765C1, F28D 5/02, 09/27/2014). The invention relates to the field of heat engineering and can be used in evaporative type heat exchangers. The improved coil assembly preferably includes serpentine tubes. These pipes have a generally elliptical cross section with external ribs (20) formed on the outer surface of the pipes.

The disadvantage of the known solution is the low coefficient of heat transfer through the plates, inefficient material consumption, which does not increase heat transfer, and the absence of an increased area of interaction between the two media.

The invention is aimed at eliminating these shortcomings and achieving more efficient operation when moving media.

The essence of the invention

The task is to create a compact heat exchanger in a given volume with the required characteristics, by creating an optimal design through the introduction of a spiral-type thermal bridge.

The technical result consists in creating a temperature field with a higher temperature gradient. The design makes it possible to significantly increase the efficiency of the heat exchanger by increasing the area of media interaction.

The heating radiator convector contains the upper and lower tubular collectors, connected by a number of vertical heat-exchange pipes containing spiral-type thermal bridges.

According to the invention, the heat exchange pipes used in the heating radiator fin have in their design a spiral-type thermal bridge connecting the heated and heating media directly and allowing to intensify heat transfer by increasing the media interaction area.

An additional technical result is compactness and improved throughput of the medium.

A phenomenon has been discovered that makes it possible to increase heat transfer from the heating surface without increasing the temperature of the coolant.

The solution is to increase the area of interaction of the heat exchange surface with the heating medium, by creating an optimal design of the heat exchanger based on the introduction of a spiral type.

Brief description of the drawings

Fig. 1. Section of a heating radiator with a heat exchange pipe containing a heat exchange bridge of a spiral type.

Fig. 2. View of the connection of the radiator sections to each other.

Fig. 3. General view of a two-section heating radiator.

Fig. 4. Heat-exchange tube with a helical-type thermal bridge crossing it.

Fig. 5. Heat exchange tube in longitudinal section.

Fig. 6. Heat exchange tube in vertical working position.

Detailed description of the invention

Designations on the drawings:

1 - heating radiator section;

2 - heat exchange pipe;

3 - sectional elbow;

4 - sectional clutch;

5 - sectional clutch bushing;

6 - plug on the sectional coupling;

7 - thermal bridge of a spiral type;

8 - section;

9 - hole;

10 - channel;

11 - plate.

The section of the heating radiator 1 consists of two heat exchange pipes 2 interconnected by sectional elbows 3, which in turn are connected by a sectional coupling 4 (Fig. 1). These sections of the radiator 1 are combined into a radiator by connecting the sectional couplings 4 with the sleeve of the sectional coupling 5 (Fig. 2). In places where there is no connection between the sectional couplings 4, and there is no coolant supply, a plug 6 is installed there (Fig. 3).

The heat exchange pipe 2 is crossed by a spiral-type thermal bridge 7 (Fig. 4) along its length, dividing it into sections 8 (Fig. 5). Thermal bridge spiral type 7, crosses the heat exchange tube 2 through. The helical type thermal bridge 7 is a helical screw stretched along the heat pipe 2 with a preferred pitch of 0 to d, where d is the pipe diameter. The edges of the helical type thermal bridge 7 are most preferably positioned at an angle of 0° to 90° to the axis of the heat pipe 1.

In a longitudinal section (Fig. 5), the heat exchange tube 2 and the helical type thermal bridge 7 conventionally form a hole 9 formed between the parts of the helical type thermal bridge 7. Thus, section 8 is formed by the helical type thermal bridge 7 and a fragment of the heat exchange tube 2. Thermal bridge helical type 7 is positioned, with respect to the heat exchange tube 2, in such a way that an opening 9 is formed which forms a channel 10. The opening 9 is in fact a section of the channel 10 and can take any form. That is, its geometry can be made in such a way as to further increase the area of interaction between the heated medium and the heating medium.

In addition, the section 8, obtained by dividing the heat exchange tube 2 by a helical-type thermal bridge 7, contains channels 10 for the movement of the medium. The medium moves along the channel 10, washing the surface of one part of the helical-type thermal bridge 7 and part of the heat-exchange tube 2. These sections 8 connect the channels 10 along the helical-type thermal bridge 7.

The movement of the medium in section 8 occurs along the channel 10 limited by the helical-type thermal bridge 7 in one direction, and when moving to another section 8, the helical-type thermal bridge 7 directs the medium further in the direction of the medium movement through the hole 9. Thus, the heating medium comes into contact with the thermal spiral type bridge 7 inside the heat exchange tube 2.

Therefore, an increased area of interaction of the medium flow with the helical-type thermal bridge 7 is created due to its helical type, which in turn increases the intensification of the heat exchange process through the helical-type thermal bridge 7 into the external environment.

The surface of the helical type thermal bridge 7 and the heat exchange tube 2, in turn, interact with the cooled medium in space. Moreover, the outer edges of the helical-type thermal bridge 7 protrude beyond the surface of the heat exchange tube 2 in the form of a plate 11 (Fig. 6).

The essence of the invention lies in the fact that the effective area of interaction of the heating medium with the cooled medium increases through the increased surface area of the heat exchanger, obtained by introducing helical-type thermal bridges 7, along which the heating medium passes through the channel 10. Based on the basic principles of heat transfer, the created design increases the intensity of heat flow to the external environment by using a spiral-type thermal bridge 7 as a working body for heat transfer.

This design makes it possible to significantly increase the efficiency of the heat exchanger by increasing the area of interaction between the media inside and outside the heat exchanger.

It is the use of a helical-type thermal bridge 7 as a transmission link between the heating and heated medium that increases the intensification of heat transfer between them. The intensity of heat transfer from the cooled surface of the heat exchanger towards the heated medium increases.

Claims (1)

A heating radiator formed by an assembly of sections, each of which includes a heat exchange pipe with a thermal element, characterized in that the thermal element, which is a helical helical body coaxial to the heat exchange pipe, is made in the form of a screw plate, simultaneously acting as a thermal bridge, crossing surface of the heat pipe along its length, protruding with its edges beyond the pipe surface on both sides of it, dividing the surface of the heat exchange pipe into sections and providing the possibility of movement of the medium in a spiral along the inner surface of the heat exchange pipe and along the surface of the thermal bridge.

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