SU1008017A1 - Vehicle body heating arrangement - Google Patents

Abstract

A BODY CIRCUIT AREA, an associated heat exchanger with two cylindrical concentrically installed shells, the cavity between which is connected by the circulation coolant circuit with a radiator located in the vehicle body and located above the specified heat exchanger and the inner sheath of the inlet shell. equipped with a noise silencer exhaust pipe of an internal combustion engine, characterized in that, in order to increase reliability and effect In particular, the above-mentioned pipes are installed tangentially with respect to the inner shell, and the outlet pipe is connected to the exhaust pipe behind the silencer.

Description

The invention relates to a transport engineering, in particular to vehicle body heating systems. Closest to the proposed technical entity is a vehicle body heater containing a heat exchanger having two cylindrical concentrically installed shells, the cavity between which is connected by the circulation loop of a heat transfer fluid with a radiator placed in the vehicle body and located above the specified heat exchanger , and the cavity of the inner shell of the inlet and outlet nozzles communicated with the internal engine exhaust pipe fitted with a silencer silencer - combustion The above pipes are connected to the exhaust pipe in front of the muffler. ClD When the exhaust gases (primary coolant) pass through the inner shell liquid (secondary X coolant in the cavity between the shells heats up and due to natural convection enters the body radiator to heat it. Then, after cooling, the secondary coolant returns back to the heat exchanger for heating and the cycle repeats. A disadvantage of the known device is reduced operational reliability and operating efficiency, copulating in that the direct result of m linear movement of the primary heat transfer fluid (exhaust gas) of the internal cavity of the sleeve on its walls is deposited soot, adversely affects the heat transfer from the primary to the secondary coolant. At the same time, the resistance to the passage of exhaust gases, ie, ise-va, reducing the internal section of the cavity through the cavity of the shell due to carbon deposition increases. The purpose of the invention is to increase the reliability and efficiency of the devices. The goal is achieved in that the heater contains a heat exchanger having two cylindrical concentrically installed shells, the cavity between which is communicated by the circulation circuit of the heat-transfer fluid with a radiator placed in the vehicle body and located above the specified heat exchanger, and the cavity of the inner shell of the inlet and outlet nozzles communicated with the exhaust pipe of the internal engine fitted with a silencer Early combustion, the above-mentioned nozzles are installed relative to the inner shell of tangeizi. Well, the outlet is connected to the exhaust pipe behind the silencer. FIG. 1 schematically shows the layout of the heater on the vehicle, side view; in fig. 2 - the same, top view; in fig. 3 is a flow chart of the flow of exhaust gases through the cavity of the inner shell; in fig. 4 is a top view of FIG. 3; in fig. 5 shows section A-A in FIG. 2; in fig. 6 is a section BB in FIG. $ 3 in FIG. 7 is a section bb of FIG. 3. A vehicle body heater contains a heat exchanger 1, having two cylindrical concentrically mounted shells 2 and 3, the space between which is connected by the circulation loop of a liquid heat exchanger with a radiator 4 placed in the vehicle body (not shown) and located above the heat exchanger 1. B the circulation loop includes a pipeline 5 for withdrawing from the heat exchanger 1 - a hot secondary coolant to the expansion tank 6, a pipeline 7 connecting the tank 6 to the radiator 4, and a pipeline 8 connecting Radiator 4 with heat exchanger 1. The cavity of the inner shell 3 inlet 9 and outlet 10 tangential nozzles and pipelines 11 and 12 are connected with the exhaust pipe 13 of an internal combustion engine (not shown) equipped with a noise silencer 14. Moreover, the inlet 9 is connected to the pipe 13 in front of the silencers 14 noise, and the outlet 10 behind the pipe 13. Connection of the pipes to the exhaust pipe is carried out using tees 15 and 16. The tee 15 is equipped with an adjustable valve 17 for changing the amount of exhaust gases through the heat exchanger 1. Heater vehicle body works as follows. With the passage of exhaust gases (primary coolant) through the cavities of the inner shell 3, the secondary coolant in the cavity between the shells 2 and 3 is heated and due to natural convection flows through pipe 5, expansion tank b and pipe 7 to radiator 4 to heat the body. Then, having cooled in radiator 4, the secondary coolant through line 8 returns to heat exchanger 1, and the cycle repeats. The exhaust gases during operation of the Cvigagel of the Combustion Combustion enter the shell cavity 3 along the tangentially installed patrol-9 and, therefore, do it in a vrasitelny aviation in this cavity, i.e. the gas flow is moving turbulently (this is the tangential location of the nozzle 10). Intensive swirling of the gas flow reduces the formation of soot. At the same time, the exhaust gas exiting the shell cavity to the exhaust pipe section 13 behind the silencer (in the reduced pressure zone of the main exhaust gas flow through the exhaust pipe) decreases the resistance to the exhaust gas flow in the cavity of the inner shell 3, 100 7 which also contributes to intensive twisting in flow of primary heat carrier. Installing the nozzles relative to the shell is tangential., And connecting the nozzle to the exhaust pipe behind the silencer allows the heater to work intensively to remove carbon from the inner surface of the shell 3, which in turn will increase the reliability and efficiency of the heater due to its self-cleaning and improving heat transfer from the primary to the secondary coolant. Self-cleaning of soot simplifies the maintenance of the heater.

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Claims (1)

VEHICLE BODY HEATER, comprising a heat exchanger having two concentric cylindrical shells, a cavity between which is connected by a liquid coolant circulation circuit with a radiator located in the vehicle body and located above the heat exchanger, and an inner and outer cavity cavity is connected to the inlet and outlet nozzles with a plug provided noise by the exhaust pipe of an internal combustion engine, characterized in that, in order to increase the reliability and efficiency p The operations mentioned pipes are installed tangentially relative to the inner shell, and the outlet pipe is connected to the exhaust pipe behind the noise muffler. § SU, „. 1008017 1008 017 2