RU2205918C1 - Machine for removing ice from pavement of air fields and other coatings - Google Patents

Abstract

FIELD: ice removing facilities. SUBSTANCE: invention relates to machines designed for cleaning air fields, roads, side-walks and other objects having like coatings. Proposed machine includes self-propelled chassis with load- bearing frame installed for vertical displacement, and nozzle assembly. Radiator consists of set of infra-red radiation gas burners. Self-propelled chassis carries gas storage container, evaporator, internal combustion engine, cold air flow generator under which casing is installed on outer side of which infra-red radiation gas burners are mounted. Use of internal combustion engine and cold air flow generator and casing of outer side of which infra-red radiation gas burners are mounted makes it possible to heat air to optimum temperature. EFFECT: provision of quick separation of ice from surface of pavement and drying surface without overheating. 2 dwg

Description

 The scope of the invention is the cleaning of ice from airfields, roads, sidewalks and other objects having similar coatings.

 The problem of the maintenance of airfield coatings for the climatic conditions of our country is of great importance. The appearance of icy formations on the runway of airfields reduces the coefficient of adhesion of coated aircraft wheels and makes control of the aircraft almost impossible. Therefore, the prevention or elimination of ice formations at the airport is the most important condition for the regularity and accident-free flight of aircraft in winter conditions.

 Ice machines are used to clean airfield and similar coatings from ice, on which emitters with quartz halogen lamps and aircraft gas turbine engines that have fulfilled the established flying resource are installed.

 The disadvantage of these machines is that the emitter has low reliability and durability. And the gas stream flowing out of the nozzle nozzle has a high temperature and negatively affects the coating. Also, the gas flow rate is overestimated, which requires significant energy costs [1,2].

 The closest analogue is a machine for cleaning airfield coatings from ice, including a self-propelled chassis with a gas turbine engine installed on it. An electric generator and nozzle nozzle associated with a gas turbine engine are also mounted on a self-propelled chassis.

 A radiator consisting of a power frame is mounted to the side of the chassis, which has the ability to move vertically using a mechanism equipped with a hydraulic cylinder and quartz halogen lamps placed under it. Above the lamps there is a reflector made in the form of a plate made of quartz ceramic with a vitrified surface layer of the reflecting side [2].

 The disadvantage of the analogue is that its emitter has low reliability and durability, since moisture on the surface of quartz halogen lamps destroys them, and moisture on the contacts and metal parts of the power frame that are energized leads to a short circuit. Also negatively affects the emitter vibration, in particular on the reflector, made in the form of a plate of quartz ceramics. When the speed of movement is insufficient and the surface is completely cleaned, there is a significant overheating of the coating with a gas stream flowing out of the nozzle nozzle, and an overestimated gas flow rate requiring significant energy costs, in particular, high consumption of aviation fuel for the operation of a gas turbine engine.

 The objective of the invention is to increase the reliability of the machine, reducing overheating of the coating and energy consumption when cleaning from ice.

 The task is achieved in that the emitter is made of a set of gas burners of infrared radiation, and on a self-propelled chassis installed: a gas storage tank, an evaporator, an internal combustion engine, a cold air flow generator. At the same time, a casing is mounted under the cold air flow generator, on the external side of which there are gas burners of infrared radiation.

 In FIG. 1 shows a proposed machine, side view; figure 2 - the proposed machine, a top view.

 The machine consists of a self-propelled chassis 1, a power cage 2, on which infrared gas burners 3 are mounted, a power cage 2 is supported by rollers 4 and can be raised and lowered using a mechanism equipped with a hydraulic cylinder 5, a cold air flow generator 6, an internal combustion engine 7 , casing 8, gas burners of infrared radiation 9. To maintain the desired combustion mode, there is a valve for supplying gas to burners of infrared radiation 3.9 from its storage capacity 10 through the evaporator 11, for better distribution edeleniya charge air on the surface of the coating nozzle 12 is a nozzle.

 The machine operates as follows. The mechanism driven by the hydraulic cylinder 5 lowers the power frame 2 with the gas burners of infrared radiation 3 mounted on it until the rollers 4 come into contact with the surface. After that, gas burners of infrared radiation 3.9 are ignited, and after the engineer on the instruments available in the cab makes sure that the temperature of each burner corresponds to the operating temperature, he turns on the translational movement. Moreover, the speed is chosen such that the ice bordering the surface of the coating is melted, and the coating is not damaged. Ice is transparent to infrared rays. Therefore, infrared radiation generated by the emitter freely passes through the ice layer to the boundary surface of the coating, which, being opaque, absorbs rays and heats up. Heat from the surface of the coating, in turn, is transferred to the boundary layer of ice, which leads to the flooding of the latter and to a complete weakening of the forces that bind the ice to the coating. Then, the air flow pumped by the generator 6 passes through the casing 8, heated by gas burners of infrared radiation 9, is heated and already hot interacts with the melted ice, tearing it from the surface and blowing it through the nozzle nozzles 12 to the side and finally drying the coating.

 Confirmation of the solution of the problem is the following.

 The use of infrared radiation gas burners 3 as an emitter of gas increased the reliability and durability of the machine, since the design of infrared gas burners allows eliminating all the disadvantages associated with the analog emitter. Moisture on the surface of the gas burner of infrared radiation 3, which consists of a metal mesh, will in no way affect the technical condition. The absence of current-carrying and electrical systems completely eliminates the possibility of a circuit.

 The elimination of such a disadvantage as overheating of the coating surface with a gas stream and high energy consumption, in particular, high consumption of aviation fuel for operating a gas turbine engine, is eliminated using an internal combustion engine 7, which requires much less fuel and at a lower cost. As well as a generator of a cold air stream 6 and a casing 8, on the outer side of which there are gas burners of infrared radiation 9. The generator of a cold air stream 6 creates a sufficient pressure of air to separate and carry away ice, and a casing 8, on the outside of which there are gas burners of infrared radiation 9, heats the air to the optimum temperature, which contributes to a more rapid separation of ice and drying without overheating of the coating surface.

Sources of information
1. Auth. St. USSR 751893, class E 01 H 5/10, 1977

 2. Auth. St. USSR 1331938, class E 01 H 5/10, 1987

Claims (1)

 A machine for cleaning ice fields and similar coatings from ice, including a self-propelled chassis with a power frame with the possibility of vertical movement on which the emitter is located, as well as nozzle nozzles, characterized in that the emitter is made of a set of gas burners of infrared radiation, while on the self-propelled chassis a gas storage tank, an evaporator, an internal combustion engine, a cold air flow generator are installed, under which a casing is mounted, on the outside of which there are gas mounts Infrared radiation.

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