section Home
Production, Amateur
Radio amateur
Model aircraft, rocket-
Useful, entertaining 		Stealth master
Electronics
Physics
Technologies
invention 		space Mystery
Earth Mysteries
Secrets of the Ocean
Stealth
section Map
Start
Forum
Use of material is permitted for reference (for websites - hyperlinks)
INVENTION
Russian Federation Patent RU2244221

MOBILE air heaters

MOBILE air heaters

Name of the inventor: Pryadkin VI (RU); Makarevich A. (RU); Davydov SV
The name of the patentee: Limited Liability Company "Ural-GPC"
Address for correspondence: 454014, Chelyabinsk, and / I in 2862, T.A.Krymskoy
Starting date of the patent: 2003.06.09

The invention relates to air heaters with forced air circulation, particularly for mobile and can be used as a mobile installation for heating and ventilation. Object of the invention - improving the efficiency and reliability of the device while increasing ease of use. Mobile air heater installed on the chassis of the automotive vehicle and comprises an air supply device and the heat source unit for discharging heated air. The air supply unit is designed as a mounted between the cab rear wall and the front wall of the fan body, connected through a diffuser with a heat source. The heat generator comprises two spaced apart combustion chamber block formed with heaters and burners, nozzles for discharging exhaust gas, and has an outlet for discharging heated air, and flexible hoses connecting the air supply to the consumer. A combustion chamber is placed close to the supply air location - near the diffuser, and the second - near the heated air outlet location - near the convergent channel at the rear of the body. Heaters are arranged perpendicular to the air flow from the fan, in the side wall of the car body along the entire length of the door is made to service the air heater and the flexible hose are located in separate canisters is the working temperature zone. Fan placement between the body and the cab improves ease of use, without requiring to open the bodywork door when air is drawn, and the presence of the two combustion chambers, spaced apart and placed one near the inlet of air, and the second - near the heated air output in conjunction with the performance of the heat generator output in a convergent channel at the rear of the body and placing heaters perpendicular to the direction of the fan air flow increases heat removal by increasing the air preheater efficiency and energy savings; placing the flexible hose in individual canisters is the working temperature zone increases their reliability and performance of the door along the entire length of the side wall of the body increases the ease of use.

DESCRIPTION OF THE INVENTION

The invention relates to air heaters with forced air circulation, particularly for mobile and can be used as a mobile installation for heating and ventilation.

Known mobile air heater, described in the same AS USSR №418680 tml. F 24 H 3/00, s. 09.27.71, OP. 10.23.74.

Known mobile air heater is mounted on a self-propelled chassis, it is located in the body and comprises a heat generator with a device for supplying air and the discharging duct with flexible gofrirovannnymi hoses, wherein the air duct is designed as a block shells with tapered tips into output portions, and hoses freely mounted in the mantle and equipped at the back of expanding tips to ensure a tight connection with the nomination of shells hoses. There is a power take-off, provided with a driveshaft, which by means of a belt transmission connected to the generator and the fuel pump, which are connected to the tank conduit, the filter and working nozzles launcher; air duct supplies air to the combustion chamber, in which the candle is placed and which communicates with the atmosphere through the exhaust pipe. Around the combustion chamber is arranged mnogohodny heater, indoor outside cover.

The disadvantage of the known heater is that it is inconvenient to use and uneconomical because the air supply device is placed in the back and the air intake is necessary each time to open the box; moreover, corrugated pipes discharging air duct in the inoperative position are always the same place where the combustion chamber is arranged, which impairs reliability because they are heated and dry, and are impregnated and fuel vapors. Thus the air duct has a complicated structure.

The closest in technical essence to the claimed mobile air heater is described in the technical description "Uniform Motor heater TPC-350 Model 350," 2000, produced Priluksky rent factory "Pozhmashina" and selected as a prototype.

The known air heater is mounted on a self-propelled chassis and comprises a heat source mounted in the body with a device for supplying air and the discharging duct. The heat generator includes a power take-off, the combustion chamber with spark plug and air valve, starting and working nozzles for spraying fuel and installed along the air flow direction of the heater with the release of heated air to the front wall of the body. The air supply unit is a fan for supplying air to the air heater and the combustion chamber on the funnel, which has two inspection hatches. Fuel tanks of absorbed pump and pumped under pressure into the air heating fuel. the pump is driven by a belt drive from the motor shaft. The air intake fan is made through the open back door of the body. Flexible hoses and discharging air pipe arranged in a body provided with a small air heater for servicing a door in one of the sides.

The disadvantage of the air heating operation is a disadvantage due to its location in the body of the fan and the need to open the door for the air intake of the body, and a narrow door for servicing the air heater in the side wall of the body. Furthermore, air heater disadvantage is its low efficiency due to the presence of a combustion heater and position the camera along the direction of flow of the supply air, which reduces the heat removal and makes it ineffective. In addition, in the known device the discharging air duct hoses are laid directly in the radiator ducts, which reduces reliability, since hoses overheat, impregnated with fuel vapors and are easily damaged.

The purpose of the claimed invention is to increase the efficiency and reliability of the device while increasing its operating convenience. The inventive object is achieved in that in mobile air heater installed on a self-propelled vehicle chassis and comprising a device for supplying air, designed as a fan connected through a diffuser with a heat source consisting of a combustion chamber with a heater, and having an outlet for discharging heated air and connecting flexible sleeves for the air supply to the consumer, but also a device discharge of heated air, wherein the heat generator and the outlet air duct installed in the body, the side wall is provided with a door according to the invention, a fan is mounted between the rear wall of the cab and the front body wall in the air preheater is introduced further the second combustion chamber with heater, with a combustion chamber adapted to block burners spaced apart and placed one on the air flow entering from the fan near the diffuser, and the second - before leaving the heat generator for heating air on the rear wall of the body and designed as a confuser, heaters are perpendicular the direction of air flow of the fan, the door to the vehicle body side wall formed along its entire length, and flexible hoses for supplying heated air to the consumer are located in separate canisters heat source is above the working temperature zone.

Fan placement between the body and the cab improves usability without requiring open bodywork door when air is drawn, and the presence of the two combustion chambers with block burners spaced apart and located one near the inlet of air, and the second - near the heated air output in conjunction with the implementation of output of heat generator in the form of a convergent channel at the rear of the body and placing heaters perpendicular to the direction of the fan air flow increases heat removal, increasing the efficiency of the air heater with an energy-saving; placing the flexible hose in special canisters outside the working temperature zone increases the reliability and performance of the door along the entire side wall of the body increases the ease of use. The inventive air heater has a new, different from the prototype such essential features as a fan arrangement for supplying air between the cab and the body, an introduction to the heat source of the second combustion chamber with a heater, the execution of the combustion chambers with block burners, execution output of the heat generator for discharging heated air in a convergent channel on the back bulkhead, placing spaced apart combustion chambers one at the entrance of air, and the second - before confuser, location heaters perpendicular to the direction of air flow, placing the flexible hose in special canisters outside the working temperature zone and the implementation of the door along the entire length of the side wall of the car body, providing together to achieve the desired result.

Applicant known technical solutions having the above distinctive features, giving a total desired result, so he believes that the claimed solution meets the criterion of "inventive step".

The inventive mobile air heater can be widely used for heating various objects at low ambient temperatures or to dry, and therefore meets the criterion of "industrial applicability".

The invention is illustrated with drawings, which shows on:

- Figure 1 - The overall look of the car with a mobile air heater;

- 2 - a schematic design of the claimed performance of the air heater.

The inventive air heater is mounted on a mobile self-propelled chassis and apparatus 1 comprises a supply air heat source unit 2 and 3 discharge the heated air.

Air supply device 1 is in particular a centrifugal fan, which is installed between the body front wall 4 and rear wall of the cab 5. The fan 1 comprises a casing housing the impeller and bearing (not shown and not designated). In the central part of the casing has air intake with a safety net - fencing. At the outlet of the housing flange mounted fan for connection to the inlet diffuser 6 of the heat generator.

The heat generator 2 is fixed on a special frame to the vehicle floor 4. It consists of a housing 7 accommodated therein two chambers 9 and 10 are block combustion burners and heaters 11 and 12. The main body of the heat generator 2 are arranged pipes 13 and 14 for discharging gases from the combusted fuel heaters 11,12 to the atmosphere. Heaters 11,12 are attached to the housing 7 and located thereon perpendicularly to the direction of air flow from the fan 1. The cover 9 each of the chambers 10 and combustion are flanges for mounting the burner block (not shown and not designated). The fuel tanks are connected with an electric pump 9 and the combustion chambers 10 (tanks and pumps not shown). At the output of a heat source in the housing 7 on the back wall of the body 4 is fixed confusor 15 to exit heated air.

The device 3 comprises a discharge heated air placed on confusor 15 tubes 16 for connecting them flexible hose (hose) 17 for the preheated air supply to the consumer, packed in special canisters 18, outside the working temperature zone.

mobile air heater is based on the transfer of heat from the walls of the radiator the heat source air from the atmosphere, and supplying heated air to the heated object.

When the power take-off (not shown and not designated) in the cab 5, the fan 1 receives the rotation from the motor vehicle 19. Impeller fan 1 rotates, air captures and transmits it through the funnel nozzle and diffuser wall 6 on the heaters 11, 12.

The heat for heating the air coming from the atmosphere by the fan 1, is released during combustion of fuel in the chambers 9 and 10, the combustion of the heat generator.

From the desk of the cab driver 5 turns on the motor fuel pump drive, the fuel from the tank is fed into the chamber 9 and 10 of the combustion, which in their block burners included spark plugs and fuel is sprayed by nozzles. Inflammation combustible mixture is produced in chambers 9 and 10, the combustion spark ignition block burners for start-up mode, and further combustion supplied from a fuel tank by an electric fuel pump of the fuel - the main mode - comes from the torch flames formed at the time of ignition of combustible mixture in the starting mode . The chambers 9 and 10 through the combustion nozzle atomized fuel is mixed with air and forms a fuel-air mixture which, burning, heats the walls of chambers 9, 10 and heaters 11, 12. The two chambers 9 and 10 increases the overall combustion efficiency of the air preheater and enhances heat removal. This may be used both compartments 9 and 10 simultaneously or alternately combustion, depending on the needs. Formed during combustion gases move through the gas duct heaters 11, 12 to the exhaust pipes 13 and 14 and give off their heat through the steel wall heaters 11.12 Washed air supplied from the air under the pressure of fan heaters 1. Location of flues 11, 12 perpendicular to the feed stream outside and enhances heat removal. The heated air is supplied to confuser 15 and through the outlet nozzle 16 and flexible hoses, sleeves 17 - to the heated object.

Location of flexible hoses, sleeves 17 in special canisters 18 protects them from the effects of the fuel vapor and increases the reliability of their work. Implementation of the door 20 along the entire length of the side wall of the body 4, provides easy access for servicing air heater.

Performing the heat generator outputs a convergent channel 15 on the rear wall of the body 4 allows the user to transfer heat directly, eliminating the need for additional metal pipelines intensively dissipate heat and thereby reduces the fuel consumption and heat, making the device more efficient, economical and convenient to ekspluattsii.

In comparison with the claimed prototype mobile air heater it is more economical, reliable and easy to use.

CLAIM

Mobile air heater installed on a vehicle self-propelled chassis and comprising a device for supplying air, designed as a fan connected through a diffuser with a heat source consisting of a combustion chamber with a heater and having an outlet for discharging heated air and connecting flexible hoses for supplying air to the consumer, but also a device for discharging heated air, wherein the heat source and device for discharge installed in a body equipped on the side wall door to serve the air preheater, characterized in that the fan is mounted between the rear wall of the cab and the front body wall in the air preheater is introduced further the second combustion chamber with a heater while the combustion chamber are made with block burners spaced apart and placed one on the air flow entering from the fan near the diffuser, and the second - before leaving the heat generator for heating air on the rear wall of the body and designed as a confuser heaters arranged perpendicular to the direction air flow from the fan, the door for maintenance of the air preheater in a side wall of a body formed along its entire length, and flexible hoses for supplying heated air to the consumer are located in separate canisters heat source is above the working temperature zone.

print version
Publication date 24.01.2007gg