RU59790U1 - HEAT EXCHANGER (OPTIONS) - Google Patents

Abstract

The proposed heat exchanger relates to devices used for cooling water, oil and other liquids and can be used in the design of radiators for cooling water and oil of internal combustion engines, as well as for cooling gearbox oil, hydraulic transmissions and other heat exchangers.

The heat exchanger comprises plastic heat exchange panels placed parallel to each other with through channels inside and through holes between the channels outside, with metal zigzag tapes installed between the panels.

Execution is possible when the tapes have protrusions that are placed in the recesses of the panels.

The execution is possible when in the places of contact of the tapes with the panels, the panels have protrusions, and in the tape there are holes in which the protrusions are placed. The protrusions may take the form of rivets.

The presence of metal tapes between the panels provides an increase in thermal conductivity and structural rigidity during the flow of liquids through the channels of the heat exchanger with high temperature, and also ensures the preservation of the geometric shape of the panels when the hot fluid flows through them.

Description

The proposed heat exchanger relates to devices used for cooling water, oil and other liquids and can be used in the design of radiators for cooling water and oil of internal combustion engines, as well as for cooling gearbox oil, hydraulic transmissions and other heat exchangers.

A heat exchanger is known, mainly for cooling water and oil in an internal combustion engine, containing plastic panels in the form of a series of pipes interconnected by walls (see open application No. 1937783 Germany MPK: F 28 F 21/06, declared July 25, 1969) . The disadvantage of this heat exchanger is its non-compactness due to the presence of walls between the pipes and insufficient rigidity at elevated temperatures.

Closest to the proposed technical solution (prototype for both options) is a heat exchanger package containing parallel heat exchange panels of a polymer composition made in the form of a series of pipes connected by a wall, and the wall thickness is equal to the wall thickness of one pipe (see the invention No. 877313 IPC: F 28 F 21/06, F 28 F 1/16, published October 30, 1981).

This design does not have high thermal conductivity and sufficient rigidity and at high temperature flowing inside the liquid, the panels can change their shape.

The proposed design of the heat exchanger solves the problem of creating a heat exchanger with plastic panels with high thermal conductivity and sufficient rigidity.

To achieve the specified technical result in the proposed heat exchanger (option 1), containing plastic parallel heat exchanging panels with through channels inside and through holes between the channels outside, parallel to each other, the new is that

metal zigzag tapes are installed between the panels, and protrusions are made in the tapes, which are located in the recesses of the panels.

Placing zigzag metal bands between the panels increases the heat conductivity of the heat exchanger and creates additional rigidity at high temperature of the fluid flowing through the channels of the heat exchanger. The protrusions made in the tapes, placed in the recesses of the panels, do not allow the tapes to move in the transverse direction relative to the panels.

To achieve the specified technical result in the proposed heat exchanger (option 2), which contains plastic heat exchange panels placed parallel to each other with through channels inside and through holes between the channels outside, the new thing is that between the panels there are metal zigzag ribbons, and in the places of contact of the tape with panels, the panels have protrusions, and holes are made in the tape in which the protrusions are placed. It is advisable that the protrusions of the panels have the form of rivets.

Placing zigzag metal bands between the panels increases the heat transfer of the heat exchanger and its stiffness, and the creation of protrusions in the panels placed in the holes of the tapes eliminates the movement of the tapes, both in the longitudinal and transverse directions relative to the panels, which also increases the stiffness of the heat exchanger.

The implementation of the protrusions of the panels in the form of rivets further increases the rigidity of the heat exchanger, and virtually eliminates the irreversible change in the shape of the panels when liquids with high temperatures flow through their channels.

1 schematically shows a heat exchanger, front view.

Figure 2 is a top view of figure 1 for a heat exchanger with protrusions in the tapes.

In Fig.3 a section along aa in Fig.2

Figure 4 is a top view of figure 1 for a heat exchanger with protrusions in the panels and holes in the tapes.

In Fig. 5, a section along BB in Fig. 4.

The heat exchanger (option 1) contains plastic heat exchange panels 1 with through channels 2 inside the panels 1 and through holes 3 parallel to the channels 2 located outside the panels 1. The panels 1 are placed parallel to each other. Between the panels 1, metal zigzag tapes 4 are installed. The tapes 4 for both variants are made of a material with high thermal conductivity, for example, brass or copper. In the tapes 4, the protrusions 5 are made so that they are located in the recesses 3 of the panels 1.

The heat exchanger (option 2) contains plastic heat exchange panels 1, with through channels 2, inside the panels 1 and through holes 3, parallel to the channels 2 located outside the panels 1. The panels 1 are placed parallel to each other. Between the panels 1, metal zigzag tapes 4 are installed. In the tapes 4, in the places of contact with the panels 1, holes 6 are made. The number of holes is selected empirically. In the openings 6 there are protrusions 7 made in the panels 1. The protrusions 7 are in the form of rivets, which ensures a rigid connection of the panels 1 with the tapes 4. The protrusions 7 are obtained by softening the panels at a temperature determined for the given panel material and compressing the entire heat exchanger package. Tapes 4 are pressed into the material of the panels 1. The shape of the rivets is obtained automatically when the plastic of the panel cools in the holes of the tapes.

The through channels 2 in cross section may have a different shape, for example, round, teardrop or lentil.

The heat exchanger operates as follows. The cooled medium, for example, water or oil, enters the channels 2 of the panels 1, and the cooling medium (air) passes between the panels 1, washing the surfaces of the panels 1 and the tapes 4. Due to the presence of tapes 4 between the panels 1, additional heat is taken from the surface of the tapes . The presence of protrusions made in tapes, and placed in the recesses of the panels, provides

increased rigidity. The presence of protrusions in the panels located in the holes of the tapes significantly increases the stiffness of the heat exchanger, and the loss of shape of the panels at high temperatures flowing through the channels of liquids is virtually eliminated.

Claims (3)

1. A heat exchanger comprising plastic heat exchanger panels placed parallel to each other with through channels inside and through holes between the channels outside, characterized in that metal zigzag tapes are installed between the panels, and protrusions are made in the tapes that are in the recesses of the panels. 2. A heat exchanger comprising plastic heat exchanger panels placed parallel to each other with through channels inside and through holes between the channels outside, characterized in that metal zigzag tapes are installed between the panels, and in the places of contact of the tapes with the panel panels have protrusions and holes are made in the tapes in which the protrusions are placed. 3. The heat exchanger according to claim 2, characterized in that the protrusions of the panels are riveted.