RU54150U1 - HEAT EXCHANGER OF THE HEATING BOILER - Google Patents

Abstract

The utility model relates to energy and can be used for autonomous water heating and year-round hot water supply for domestic and industrial premises, for heating residential premises and for the selection of hot water for domestic needs

The objective of the proposed solution is to increase efficiency and reliability while reducing metal consumption.

The problem is solved in that in the heat exchanger of the heating boiler, containing the outer and inner bodies, the cavity between which forms a water jacket, there are heat exchange elements in the form of rows of hollow pipes mounted horizontally in the inner case. For the circulation of the coolant located in the cavity of the water jacket, according to the solution, partitions are installed in the transverse plane of the cavity of the water jacket, having channels for the passage of the coolant, designed to provide a change in the direction of movement of the coolant in the rows of pipes.

Description

The utility model relates to energy and can be used for autonomous water heating and year-round hot water supply for domestic and industrial premises, for heating residential premises and for the selection of hot water for domestic needs.

A heat exchange device of a heating boiler is known in which the heat exchange element is made in the form of a cavity of a L-shaped form with an expanded upper part (see application for invention of the Russian Federation No. 2000104926, IPC F 24 H 1/00).

The disadvantage is that with this design does not provide a high efficiency boiler.

A heat exchange device with heat exchange elements in the form of flat horizontal tubes is also known (see RF patent No. 2158394, IPC F 24 H 1/00).

However, the use of flat heat-exchange elements leads to a rise in the cost of the boiler by increasing the complexity of manufacturing heat-exchange elements.

Closest to the proposed solution is a heat exchanger of a heating boiler, containing an outer and inner case, the cavity between which forms a water jacket, with heat exchange elements in the form of rows of hollow pipes for circulation of the coolant. The heat exchange elements are located in the inner casing and form a closed loop for the coolant with the cavity of the water jacket. Heat exchange elements are installed horizontally and diametrically opposite at different heights (see application for invention of the Russian Federation No. 2002110019, IPC F 24 H 1/44).

The disadvantage of this device is that, the heat-exchange elements are made in the form of flat hollow elements, which requires additional costs for their manufacture. A strictly horizontal arrangement of the heat exchange elements delays the movement of the coolant, which does not contribute to intensive heat transfer. The location of the heat exchange elements in relation to the previous one at an angle of 90 ° complicates the assembly and welding of the boiler.

The objective of the proposed solution is to increase efficiency and reliability while reducing metal consumption.

The problem is solved in that in the heat exchanger of the heating boiler, containing the outer and inner bodies, the cavity between which forms a water jacket, are located Heat exchange elements in the form of rows of hollow pipes,

mounted horizontally in the inner casing, and forming a closed loop with the cavity of the water jacket for the circulation of the coolant. For the circulation of the coolant located in the cavity of the water jacket, according to the solution, partitions are installed in the transverse plane of the cavity of the water jacket, having channels for the passage of the coolant, designed to provide a change in the direction of movement of the coolant in the rows of pipes.

The cases are made rectangular, and the partitions are formed by the corner elements of the L-shaped profile, located along the length of three sides. The nominal diameter of the pipes is selected in the range from 10 to 32 mm, depending on the power of the boiler. Pipes and partitions are located at an angle from 1.3 ° -3 ° to the transverse plane.

The utility model is illustrated by drawings, in which Fig. 1 shows a general view of a heat exchange device - a side view, and in Fig. 2 - in vertical section, where:

1 - heat exchange elements;

2 - angle of inclination;

3 - the direction of movement of the coolant;

4 - external housing;

5 - inner case;

6 - water shirt;

7 - partitions.

The device contains an outer 4 and an inner 5 rectangular case. The cavity between them forms a water jacket 6. The heat exchange elements 1 are made in the form of rows of hollow pipes for circulation of the coolant and are located in the inner housing 5. In the transverse plane of the cavity of the water jacket 6, partitions 7 are installed, for example, in the form of elements of a L-shaped profile, welded one side of the profile to the three sides of the inner case 5. The absence of a partition on the fourth side forms a gap (channel) between the outer and inner case for the passage of coolant. Partitions divide the rows of pipes into sections, while in adjacent sections the coolant moves in opposite directions due to the corresponding inclination of the pipes (opposite for adjacent sections) and the arrangement of gaps from different, for example, opposite sides of the housings.

The device operates as follows: the heat carrier (water) entering from the bottom of the cavity of the water jacket of the device is heated and moves upward in direction 3. To optimize heat removal when moving the heat carrier, the heat transfer pipes 1 are not horizontally, but at an angle to the transverse plane. To prevent direct movement of water through the cavity of the water jacket 6

between the walls are welded partitions 7 at an angle to the transverse plane equal to the angle of the pipe. T.O. pipes 1 and partitions 7 are located in the device in parallel. All together provides a serpentine passage of the coolant through the heat exchanger, which significantly increases the efficiency of the boiler.

The angle of inclination of pipes 1.3 ° -3 ° is determined as a result of calculations and experimental work. The absence of the angle of inclination of the pipes prevents the intensive passage of the coolant through the heat exchanger, which leads to stagnation. An angle of more than 3 ° does not provide complete heat removal, reduces the efficiency of the boiler.

The proposed solution also allows to reduce labor and material costs, energy consumption, unit cost of the product through the use of standard lightweight pipes with nominal bore depending on the boiler capacity from 10 to 32 mm and a simple device design.

Claims (4)

1. A heat exchanger device of a heating boiler, comprising an outer and inner case, arranged to form a cavity between them for a water jacket, heat exchange elements in the form of rows of hollow pipes, located in the inner case and forming a closed loop for the circulation of the heat carrier with the cavity of the water jacket, characterized in that in the transverse plane of the cavity of the water jacket installed partitions forming channels for the passage of coolant, located with the possibility of providing a change in direction coolant movement in the rows of pipes between adjacent partitions. 2. The device according to claim 1, characterized in that the cases are made rectangular, and the partitions are formed by corner elements of the L-shaped profile, located along the length of three sides. 3. The device according to claim 1, characterized in that the pipes have a nominal diameter of from 10 to 32 mm 4. The device according to claim 1, characterized in that the pipes and partitions are located at an angle from 1.3 ° -3 ° to the transverse plane.