RU139542U1 - RADIATOR SECTION - Google Patents

Abstract

The radiator section contains a metal casing, a channel for the passage of fluid formed by the walls, front and rear panels, longitudinal ribs connecting the front and rear panels to the channel for the passage of fluid, transverse couplings for connecting with other elements of the radiator section, at least one set of heat transfer ribs separated by grooves for the passage of air protruding outward from the walls of the channel and longitudinal ribs. The heat transfer ribs have a trapezoidal shape with rounded corners between the outer base and opposite sides. The angle between the opposite sides of the trapezoid is 3 ° -15 °, regardless of the size of the inner base of the heat transfer ribs. The front and rear panels are flat and are located along the vertical camera. The technical result of the proposed utility model is to increase the heat transfer of the radiator.

Description

The utility model relates to the field of heating equipment, namely to radiators used in water heating systems, and can be used for central and individual heating systems of residential, public and industrial buildings.

A sectional heating radiator is known, comprising a series of longitudinal finned tubes of aluminum profile, using nipples sealed in the holes of the upper and lower manifolds, also made of aluminum profile. The fins of each pipe are made in the form of a two-side ridge, in the center of which the pipe is symmetrically located. (Patent for invention RU 2059933 C1, priority 1993.09.01, publication date 1996.05.10)

The disadvantage of this device is that the fins on the pipe are strictly vertical and do not have inclined channels for supplying heat to the heated room. In addition, the disadvantage of the prototype is the lack of modern industrial design of the appearance of a sectional radiator.

Known sectional heating radiator, consisting of sections tightly interconnected from an aluminum alloy. Contains in each section a vertical pipe communicating with the upper and lower manifolds for the passage of coolant. In this case, the vertical pipe is made with bilateral symmetrical vertical fins located between the extreme wide panels. (Utility Model Patent No. 75014 U1, priority 02/18/2008, publication date 07/20/2008)

A disadvantage of the known radiator is the low heat transfer due to non-optimal aerodynamics and geometry of the panels and fins, which leads to insufficient intake and acceleration of air in the channels for flows.

A known radiator for circulating hot water for space heating, comprising a radiating section open from the outside, comprising: radiating panels for hot water, consisting of pipes made entirely of plastic; each radiating panel contains: a group of sets of plastic vertical pipes, identical in diameter and length, arranged in parallel, while the corresponding upper ends of the plastic vertical pipes communicate with their respective lower ends through each of the plastic horizontal pipes, (patent for invention No. 2433352, priority of March 17, 2008, published November 10, 2011)

A disadvantage of the known radiator is the low heat transfer of the radiator.

The closest technical solution, according to coinciding common features, that is, a prototype, is a heating radiator element consisting of a main body, transverse couplings, and at least one set of fins that protrude from the body wall, separated by grooves (application WO 2011045653, priority of October 13, 2009, published April 21, 2011)

The disadvantage of this device is not high enough heat transfer.

The technical result of the proposed utility model is to increase the heat transfer of the radiator.

The technical result is achieved due to the fact that the radiator section contains a metal casing formed by the walls of the channel for the passage of fluid, front and rear panels, longitudinal ribs connecting the front and rear panels to the channel for the passage of fluid, transverse couplings for connection with other elements of the radiator section, at least one set of heat transfer ribs separated by grooves for air passage and protruding outward from the channel walls and longitudinal ribs. The heat transfer ribs have a trapezoidal shape with rounded corners between the outer base and opposite sides. The angle between the opposite lateral sides of the heat transfer ribs is 3 ° -15 °, regardless of the size of the inner base.

The front and rear panels are flat and are located along the vertical camera.

The use of trapezoidal heat transfer ribs with an angle α between opposite sides lying in the range of 3 ° -15 ° leads to an increase in the convection component of heat transfer, and, consequently, to an increase in the overall heat transfer of the radiator.

The utility model is illustrated by drawings, where in FIG. 1 shows a general view of the radiator, FIG. 2 is a front view of a heat transferring fin of a radiator.

According to figure 1, the radiator section consists of a housing made of metal, for example, of aluminum by injection molding. The housing comprises a channel 1 for the passage of fluid formed by the walls, located vertically and extending along the radiator section, front 2 and rear 3 panels, transverse couplings 4 for connecting with other radiator elements and / or with the hydraulic system, at least one row of heat transfer ribs 5 separated by grooves 6.

Along the channel 1 for the passage of fluid opposite each other are located front 2 and rear 3 panels. The front 2 and rear 3 panels are made in the form of flat rectangular plates connected to the channel 1 for the passage of body fluid through longitudinal ribs 7 and located along the vertical chamber. Front 2 and rear 3 panels act as heat transfer plates. The front panel 2, mainly facing the heated external environment.

The radiator section contains one or more heat transfer ribs 5, protruding outward from the walls of the channel 1 for the passage of liquid and longitudinal ribs 7, and located by an internal base A to the channel 1 for the passage of liquid and longitudinal ribs 7. The heat transfer ribs 5 are separated by corresponding grooves 6 for air passage . As seen in FIG. 2, the heat transfer ribs 5 of the radiator have a trapezoidal shape and are made with rounded corners between the outer base and opposite sides. The angle α between the opposite sides of the heat transfer ribs lies in the range of 3 ° -15 °, regardless of the size of the lower inner base A.

When using heat-transmitting fins of a trapezoidal radiator with an angle α between opposite sides lying in the indicated interval, the heat transfer of the radiator increases. This is explained by the fact that convection flows arise with heat-transmitting fins of a trapezoidal radiator, which increase the convective component of heat transfer T _k . The radiant heat transfer component T _l depends on the area of the heat transfer ribs. And when using heat-transmitting fins of a trapezoidal radiator, in comparison with rectangular heat-transmitting fins, the radiant component of heat transfer T _l decreases slightly. The decrease in the radiant component of heat transfer is offset by a more substantial increase in the convective component of heat transfer. Thus, the total heat transfer T _total radiator increases:

Where

ΔT _total - change in the total heat transfer, in%;

ΔТ _к - change in the convective component of heat transfer, in%;

ΔT _l - change in the radiant component of heat transfer, in%.

The value of the angle α between the opposite lateral sides of the heat transfer ribs 5, lying in the range from 3 ° -15 °, provides the maximum difference between the increase in the convective component of the heat transfer T _to and the loss of the radiant component of the heat transfer T _l , and, therefore, the maximum increase in the overall heat transfer of the radiator.

Here are examples of choosing the angle α between the opposite sides of the heat transfer fins of the radiator.

Example 1

Take heat-transferring fins of a radiator with an angle α between the opposite sides of the trapezoid 1 °. In this case, the opposite sides become almost parallel, the radiant component of the heat transfer decreases by 1%, the convection component of the heat transfer does not increase, because the dimensions for convection flows are too small. Therefore, there is a decrease in the overall heat transfer of the radiator by 1%.

Example 2

We take the heat-transferring fins of the radiator with an angle between the opposite sides of the trapezoid equal to 3 °. With this size of the heat transfer ribs, convection flows arise that increase the convective component of the heat transfer by 3%. The radiant heat transfer component is reduced by about 1.1%. Thus, the total heat transfer increases by 1.9%:

ΔT _total = ΔT _to + ΔT _l = 3-1.1 = 1.9%

Example 3

Let us take heat-transferring fins of a radiator with an angle between the opposite sides of the trapezoid equal to 10 °. With this size of the heat transfer ribs, convection flows arise that increase the convective component of the heat transfer by 3.2%. The radiant heat transfer component decreases by about 1.2%. Thus, the total heat transfer increases by 2%:

ΔT _total = ΔT _to + ΔT _l = 3.2-1.2 = 2%

Example 4

We take the heat-transferring fins of a radiator with an angle between the opposite sides of the trapezoid equal to 15 °. With this size of the heat transfer ribs, convection flows arise that increase the convective component of the heat transfer by 3.5%. The radiant heat transfer component is reduced by about 1.5%. Thus, the total heat transfer increases by 2%:

ΔT _total = ΔT _to + ΔT _l = 3.5-1.5 = 2%

Example 5

Take heat-transferring fins of a radiator with an angle between the opposite sides of the trapezoid of 20 °. In this case, the area of heat transfer ribs decreases and the radiant component of heat transfer decreases by 3.8%, and the convection component increases by 3.8%. Thus, the overall heat transfer of the radiator does not increase:

ΔT _total = ΔT _to + ΔT _l = 3.8-3.8 = 0%

Thus, it is seen that through the use of heat transfer ribs with an angle α between the opposite sides of the heat transfer ribs in the range of 3 ° -15 °, the heat transfer surface of the radiator is optimized and the difference between the increase in the convective component of heat transfer and the loss of the radiant component of heat transfer is maximum.

When the angle α between the opposite sides of the heat transfer ribs is less than 3%, there is no increase in heat transfer, because the changes in the radiant and convection components of heat transfer are such that the radiant component of heat transfer decreases, the convection component of heat transfer remains unchanged, because dimensions for convective flow are too small. The overall heat transfer of the radiator is reduced.

When the angle α exceeds 15 ° between the opposite lateral sides of the heat transfer fins, the area of the heat transfer fins of the radiator decreases, the radiant component of heat transfer decreases, and the convection component that increases in this case is less than the loss of the radiant component.

Claims (1)

A radiator section comprising at least one channel formed by the walls for the passage of fluid and separated by grooves for the passage of air protruding outward from the walls of the channel heat-transmitting fins having a trapezoidal shape with rounded corners between the outer base and opposite sides, the angle between the opposite sides of the heat transfer ribs lies in the range from 3 ° to 15 °.

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