RU2324883C2 - Heat exchanger block - Google Patents

Abstract

FIELD: heating, heat exchange.

SUBSTANCE: proposed technical solution relates to the field of mechanical engineering, in particular to auxiliaries cooling systems and waste heat recovery systems of internal combustion engines. A heat exchanger block comprises at least couple of heat exchangers arranged concentrically towards one another, each heat exchanger having inlet and outlet fittings for hot medium. Adjoining heat exchangers may have a common wall. This heat exchanger block configuration allows improving the efficiency of auxiliaries cooling and heat utilization of an internal combustion engine by means of its waste heat recovery.

EFFECT: improving the efficiency of auxiliaries cooling and heat utilization of an internal combustion engine by means of its waste heat recovery.

2 cl, 2 dwg

Description

The proposed technical solution relates to the field of engineering and, in particular, to cooling systems of units and heat recovery of internal combustion engines.

The radiator unit of a multi-circuit cooling system of a transport power plant (prototype) is known, which contains radiators of independent cooling circuits, and the radiators are mounted in parallel in the air flow in the frontal plane and are made in the same row in depth and with one common linear dimension in the frontal plane (see ed. St. 1379772, published on 03/07/1998, bull. No. 9). This design of the radiator block provides only cooling of the engine units.

The design proposed for consideration solves the problem of increasing the efficiency of cooling the units and using the heat of the internal combustion engine by utilizing the heat removed.

To achieve the specified technical result in the heat exchanger block containing at least a pair of heat exchangers, it is new that they are mounted concentrically relative to each other. The most appropriate is the implementation of adjacent heat exchangers with a common wall.

With this design, the heat loss of one heat exchanger passes to the adjacent heat exchanger and the more heat exchangers are in the block, the more fully the heat of the internal combustion engine is used when utilizing the heat removed.

Figure 1 shows schematically a block of heat exchangers (top view).

Figure 2 schematically shows a scan of one heat exchanger.

The heat exchanger unit comprises a heat exchanger 1 and a heat exchanger 2 mounted concentrically relative to each other. They have a common wall 3. The heat exchanger 1 has a pipe 4 for supplying cold water to the heat exchanger and a pipe 5 for the exit of heated water from the heat exchanger. The heat exchanger 1 also has a pipe 6 for supplying hot antifreeze from an internal combustion engine (not shown in the drawing) and a pipe 7 for outputting the cooled antifreeze. The heat exchanger 2 has a pipe 8 for supplying cold water to the heat exchanger and a pipe 9 for the exit of heated water from the heat exchanger. The heat exchanger 2 also has a pipe 10 for supplying hot oil from the engine and a pipe 11 for leaving the cooled oil. The heat exchanger 1 is made in the form of a sealed housing 12 with nozzles 6 and nozzles 7, and a zigzag pipe 13 with nozzles 4 and 5 mounted at the ends of the pipeline is installed inside the heat exchanger. The heat exchanger 2 is made in a similar manner.

The heat exchanger unit operates as follows. Cold water is supplied through the pipe 4, inside the heat exchanger 1 through the pipe 6 is fed hot antifreeze from the internal combustion engine. Antifreeze, washing the pipeline 13, through which water passes, heats it, and he cools. After exiting through the pipe 7, the cooled antifreeze is again supplied to cool the engine, and the heated water through the pipe 5 is supplied to the consumer or, if it is not sufficiently heated, is supplied through the pipe 8 to the heat exchanger 2. From the engine, hot oil is supplied through the pipe 10 to the heat exchanger 2, which washing the pipeline with cold water, heats the water, which, leaving through the pipe 9, is sent to the consumer, and the cooled oil through the pipe 11 is sent to the engine.

Thanks to the concentric arrangement of the heat exchangers, heat is only lost through the outer walls. The more heat exchangers installed in the unit, the less heat loss during its utilization will be compared to the prototype. When performing adjacent heat exchangers with a common wall, heat loss is also reduced.

Heat exchangers can also be installed in the heat exchanger block for heat recovery from the combustion products, for cooling the charge air and other systems.

Claims (2)

1. A heat exchanger unit comprising at least a pair of heat exchangers, characterized in that the heat exchangers are mounted concentrically relative to each other, each heat exchanger having inlet and outlet nozzles for cold and hot media. 2. The heat exchanger block according to claim 1, characterized in that the adjacent heat exchangers have a common wall.

Images