RU2834125C1 - Heating radiator with variable geometry - Google Patents

Abstract

FIELD: heat exchange.

SUBSTANCE: invention relates to heat engineering, namely to heat exchangers, and can be used in rooms for high-quality heating and maintaining a given temperature by transferring heat energy to the environment from the source to the consumer through the wall of the radiator housing. Heating radiator with variable geometry consists of a section including upper and lower manifolds for passage of heat carrier, communicating with lateral branch pipes, on which heat exchange elements with flat and ribbed parts are fixed, guide elements made up of movable plates are secured on top horizontal sections of lateral branch pipes at points of abutment on manifold.

EFFECT: increasing heat emission without changing dimensions and changing the number of radiator sections.

1 cl, 4 dwg

Description

The device belongs to the field of heat engineering, namely to heat exchangers, and can be used in rooms for high-quality heating and maintaining a set temperature by transferring thermal energy to the environment from the source to the consumer through the wall of the radiator housing.

The first heating radiator made of cast iron was invented in 1855 and put into practice in the second half of the 19th century in St. Petersburg by the Russian manufacturer and entrepreneur Franz Karlovich San-Galli (1824-1908). It was also San-Galli who first proposed the term "battery" in the context of heating. (D.Yu. Alekseev St. Petersburg entrepreneur San-Galli Business today. - 2011. - March. - P. 24-27).

The disadvantages include the fragility of cast iron. Cast iron radiators require periodic painting; in addition, the walls of the internal channels are rough and porous, which over time leads to the formation of plaque and a drop in heat transfer. The heat exchange area is changed by removing (installing) the heating sections. In this case, it is necessary to disconnect the radiator from the heating system and drain it.

Aluminum solid, sectional radiators are known Aluminum (its alloys, for example silumin, duralumin) radiators [https://m-strana.ru/articles/alyminievye-batarei-otopleniya-kharakteristiki/], are currently considered the most effective due to the high thermal conductivity of aluminum and the increased surface area of the radiator due to protrusions and ribs. A significant disadvantage of aluminum radiators is the corrosion of aluminum in an aqueous environment. The heat exchange area is changed by removing (installing) the heating sections. In this case, it is necessary to disconnect the radiator from the heating system and empty it.

Steel panel, sectional, tubular, and bimetallic radiators are known [https://farengeit-online.ru/blog/stalnye-panelnye-radiatory-kharakteristiki-kakie-byvayut-plyusy-i-minusy/].

The main disadvantage of panel, sectional, tubular radiators is the impossibility of changing the heat exchange surface area, and bimetallic radiators - the need to remove (install) heating sections. In this case, it is necessary to disconnect the radiator from the heating system, empty it.

The task is to create a heating radiator, designed with the ability to change (increase, decrease) the heat exchange area of the radiator without emptying and disassembling it.

The technical result is an increase in heat transfer without changing the dimensions or the number of radiator sections.

The technical result is achieved due to the fact that the heating radiator consists of a section including upper and lower collectors for the passage of the coolant, communicating with the side pipes, on which heat exchange elements with flat and finned parts are fixed. On the upper horizontal sections of the side pipes in the places of adjoining the collector, guide elements are fixed, made in the form of movable plates.

Fig. 1 shows a heating radiator with variable geometry.

Fig. 2, 3, 4 show two radiator sections in side view and sections, on one the finned part is located on the inner side of the section, and on the other it is turned outward.

The heating radiator with variable geometry consists of a tubular section. There can be any number of sections, including one section or many, connected to each other using a nipple with a left-hand thread on one side and a right-hand thread on the other through an internal thread in the collector of section 1.

The section includes upper and lower collectors 1 for the passage of the coolant. Collectors 1 communicate with side pipes 2, on which heat exchange elements 3 with flat and finned parts are fixed. Heat exchange elements 3 can be made movable or fixed. Heat exchange elements 3 that are installed to the wall can be made fixed.

The heat exchange element 3 consists of a middle vertical part 5, upper 6 and lower 7 parts. All parts 5, 6, 7 of the heat exchange element 3 are made with fins 8 on their inner part and flat on the outside.

The upper 6 and lower 7 parts of the heat exchange element 3 are made stationary and are attached to the side pipes 2 (more precisely, to the connecting branches - upper and lower) in the traditional way from aluminum by casting the alloy around the pipe 2 and then assembled by welding the branches to the upper and lower collector 1.

On the upper horizontal sections of the side pipes 2 at the points of adjoining the manifold 1, guide elements 4 are fixed, made in the form of movable plates. The movable plates are made superimposed and consist of two halves pulled together by means of a screw connection. If the movable plates are made non-detachable, then a tube of a suitable diameter is inserted into the opening of the middle vertical part 5 of the heat exchange element 3, bends (upper and lower) are welded at both ends, and a side pipe 2 is obtained. The upper element 6 is installed (put on) on the upper bend of the side pipe 2 and the guide element 4 is put on the straight section welded to this bend. A fixed angular heat exchange element 7 is put on from the lower part of the bend of the side pipe 2 and the straight section is welded to the bend. The resulting finished heat exchange element 3 is welded to the manifold 1.

In the space formed between the side branch pipe 2 and the middle vertical part 5 of the heat exchange element 3, a heat-conducting material is placed in the form of a graphite-based lubricant or heat-conducting paste. During operation of the radiator, the heat-conducting

The material can be replaced.

Collectors 1 are used to connect to the heating system, as well as to install plugs with an air vent, drain cock or plug. Heat exchange elements 3 are made of aluminum, duralumin, copper or other available material with good heat-conducting properties.

The device works as follows.

The variable geometry heating radiator is connected to the heating system in the traditional way using standard threaded fittings installed on the collectors 1. The hot coolant moves along the upper collector 1 and flows down the side pipes 2 into the lower collector 1, while cooling and giving off thermal energy through the fins 8 of the heat exchange element 3 to the external heated environment. Then, through the lower collector 1, the cooled coolant is removed from the radiator back into the heating system.

In the normal position, the rotating middle vertical part 5 of the heat exchange element 3 faces outward with the flat side, and the elements 4 are in a horizontal position, the gaps between the guide elements 4, the heat exchange elements 3 of the section are minimal (the radiator is "closed"). Air from the room side, when in contact with the radiator, moves upward along the smooth side of the middle vertical part 5 of the heat exchange element 3, receiving a minimum amount of thermal energy from the radiator, while a minimum amount of air flows through the inner part of the radiator due to the small gaps between the guide elements 4 and the sections (if there is more than one).

To increase the transferred thermal energy, the finned parts 8 of the middle vertical part 5 of the heat exchange element 3 "open" by turning on the side branch pipe (along the heat-conducting material) around its axis by 180° with the finned part 8 facing the outside of the radiator towards the inside of the room, and the flat part facing the inside of the radiator. In this case, the heat transfer coefficient a increases with the incoming air flow velocity remaining constant, due to the larger heat exchange surface.

To further increase heat exchange, the upper guide elements 4 are “opened” (by moving from a horizontal to an inclined or vertical position) and the air flow increases through the inner part of the radiator section, while it is possible to direct the air flow to the side (for example, from under the edge of a window sill).

The gap between the rotating middle vertical part 5 of the heat exchange element 3 and the side branch pipe 2 is minimal, filled with a heat-conducting material, for example, a heat-conducting paste, due to which improved heat transfer from the heating medium to the heated one through the walls of the vertical side branch pipe 2 is ensured.

Thus, the claimed technical solution allows to regulate heat output from the heating radiator without disassembling it to change the number of sections, without stopping the heating system, thereby ensuring an increase in heat output without changing the number of radiator sections, and also has a more compact appearance and can be used in places with limited space that require greater power.

Claims (1)

A heating radiator consisting of a section including upper and lower collectors for the passage of the coolant, communicating with side pipes on which heat exchange elements with flat and finned parts are fixed, and on the upper horizontal sections of the side pipes at the points of adjoining the collector, guide elements made in the form of movable plates are fixed.