SU718304A1

SU718304A1 - Vehicle heating system

Info

Publication number: SU718304A1
Application number: SU782671111A
Authority: SU
Inventors: Анатолий Сергеевич Шляхтич; Анатолий Иванович Янушко; Эдвард Александрович Павлющик; Олег Петрович Царев; Игорь Федорович Кисляков; Иван Францевич Демидович
Original assignee: Предприятие П/Я Р-6131
Priority date: 1978-10-12
Filing date: 1978-10-12
Publication date: 1980-02-29

Description

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Изобретение относитс к автомобилестроению , более конкретно к отопительным системам транспортных средств, снабженных двигателем внутреннего сгорани с воздушным или вод ным охлаждением, а также газотурбинным двигателем.The invention relates to the automotive industry, more specifically to the heating systems of vehicles equipped with an air or water cooled internal combustion engine, as well as a gas turbine engine.

Известна система обогрева дл автомобилей , содержаща два нагревател , встроенных в элементы выхлопной системы, конденсатор , отопитель, насос и средства управлени им 1.A known heating system for automobiles comprising two heaters embedded in the elements of the exhaust system, a condenser, a heater, a pump and its controls 1.

Така система дорогосто ща и сложна в эксплуатации, так как система управлени насосом состоит из электропривода и регул тора частоты импульсов, работа которого зависит в свою очередь от числа оборотов двигател .Such a system is expensive and difficult to operate, since the pump control system consists of an electric drive and a pulse frequency regulator, whose operation depends in turn on the number of revolutions of the engine.

Наиболее близким к изобретению техническим решением вл етс отопительна система транснортного средства, содержаща соединенные трубопроводами теплообменник , встроенный в элемент выхлопной системы (глушитель), насос, соединенный с его всасывающим патрубком, конденсатор и отопитель 2.The closest technical solution to the invention is the heating system of the transport means, comprising a heat exchanger connected by pipes, integrated into the exhaust system element (muffler), a pump connected to its suction inlet, a condenser and a heater 2.

Недостатками указанной отопительной системы вл етс образование на участке контура между теплообменником и отопителем двухфазной системы пар-жидкий теплоноситель, сопровождающеес образованием паровых пробок, что затрудн ет циркул цию теплоносител по контуру. Пар теплоносител имеет также меньший коэффициент теплоотдачи, чем жидкий теплоноситель .The disadvantages of this heating system are the formation of a two-phase vapor-liquid heat carrier system between the heat exchanger and the heater, which is accompanied by the formation of vapor plugs, which makes it difficult for the coolant to circulate around the circuit. Heat carrier steam also has a lower heat transfer coefficient than liquid heat carrier.

В качестве теплоносител в прототипе примен етс дорогосто щие октофлюорциклобутан и сернистый гексафлюорид. ;Expensive octofluorcyclobutane and sulfur hexafluoride are used as a coolant in the prototype. ;

Такие теплоносители при температуре 80°С создают давление в контуре пор дка 25 кг/см, что повышает энергетические затраты на работу насоса.Such fluids at a temperature of 80 ° C create pressure in the circuit of about 25 kg / cm, which increases the energy costs of the pump.

Указанные недостатки снижают эффективность обогрева и удорожают систему.These drawbacks reduce the efficiency of heating and increase the cost of the system.

Цель изобретени - повышение эффективности обогрева за счет прохождени через отопитель только жидкой фазы теплоносител при одновременном повышении экономичности.The purpose of the invention is to increase the heating efficiency by passing only the liquid phase of the heat-transfer agent through the heater while improving its efficiency.

Это достигаетс тем, что отопительна система снабжена расширительной камерой , расположенной между теплообменником и насосом и параллельно соединенной с конденсатором, а насос и конденсатор подключены к выходному трубопроводу теплообменника.This is achieved by the fact that the heating system is equipped with an expansion chamber located between the heat exchanger and the pump and connected in parallel with the condenser, and the pump and the condenser are connected to the outlet pipe of the heat exchanger.

На чертеже показана предлагаема система .The drawing shows the proposed system.

Claims

The heating system contains a closed loop forming heat exchanger 1, built in element 2 of the engine exhaust system, a pump 3 connected to its intake: a connecting pipe 4, a condenser 5, a heater 6 with a fan 7 and an expansion chamber 8 located between the heat exchanger 1 and the pump 3 and connected in parallel by pipe 9 to a condenser 5 located above the expansion chamber 8 and equipped with a steam-air valve 10. These assemblies of the system are connected in series with each other by pipes 11, 12, 13 and pipe 4 The cross section of the pipeline 9 is larger than the cross sections of the pipe 4 and the pipeline 12. The heating system of the vehicle operates as follows. The heat carrier, water or antifreeze, is pumped by the pump 3. In the heat exchanger 1, blown with hot exhaust gases, the heat carrier with partial vaporization is heated, after which the heat carrier enters the expansion chamber 8, in which the gaseous phase separates as a result of a sharp expansion. The gaseous phase rises up through the cold coolant, which is located in the duct 9 and in the condenser 5, where it condenses. The condenser 5 is a tank equipped with a steam-air valve 10 to maintain the pressure in the system within the prescribed limits. Thanks to the withdrawal of gaseous; phase and simultaneous feeding of the condenser 5 ensures uninterrupted circulation of the coolant and cavitation free operation of the pump 3. Next, the heat transfer fluid passes through the heater 6, where it gives off its heat to the air blown through the heater 7. The location of the condenser 5 behind the heat exchanger 1 and parallel connection it to the expansion chamber 8 makes it possible to increase the heating efficiency due to the passage through the heater of an exceptionally liquid phase heat carrier, i.e., its greater coefficient of heat impact than in the vapor phase and allows the use of water as a heating medium or a less expensive br, s, than the prototype, coolant, for example antifreeze. Due to the passage of the liquid phase coolant through the heater, the efficiency of vehicle heating is increased, and the use of water or antifreeze as a coolant allows for greater efficiency due to the possibility of reducing pump mosh. The invention of the heating system of the vehicle, and, connected by pipelines, a heat exchanger built into the exhaust system element, a n. Pump connected to its suction inlet, a condenser and a heater, which in order to increase heating efficiency by passing through the heater only the liquid phase of the coolant while improving efficiency, it is equipped with an expansion chamber located between the heat exchanger and the pump and connected in parallel with the condenser m, and the pump and condenser connected to the outlet pipe of the heat exchanger. Sources n; Formations taken into account during the examination 1. France, No. 2137389, Cl. B 60N 1/00, 1972.

2. The patent of Germany No. 1430598, cl. 63C 73. 1972 (prototype). .

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