JPH025249Y2 - - Google Patents

Description

[Detailed explanation of the idea] (Industrial application field) The present invention relates to a combustion device.

(Prior Art and Problems) Conventionally, a plurality of solenoid valves have often been used to switch fluid flow rates, but all of these solenoid valves are installed on the same plane and are elongated in one direction.
By the way, Japanese Patent Application No. 136149 (1982)
In combustion devices such as No. 15011), in addition to switching the amount of primary air, a fluid element also switches the supply destination of the mixture, and a solenoid valve is also required in the control air passage for this switching. It was hot.

The present invention eliminates the above-mentioned conventional drawbacks, uses the control air solenoid valve also as the primary air amount switching solenoid valve, reduces the number of parts, and improves ease of assembly.

(Example) Reference numeral 1 denotes a fuel supply unit, which is composed of an air chamber 2 and a carburetor 3. A primary air pipe 4 is connected to the air chamber 2 so that primary air from a fan is introduced, and the carburetor 3 is connected to the air chamber 2. is provided with a rotor 6 rotated by a motor 5, an oil pipe 7 for dropping oil onto the rotor 6, and a heater 8 for vaporizing the sprayed oil. A fluid element 9 is provided downstream of the vaporizer 3, and the element 9
Output ports 10 and 11 are connected to a combustion section (not shown) such as a combustion tube. Reference numeral 12 denotes a control air port opened downstream of the nozzle 27 of the fluid element 9, to which a control air passage 13 is connected. 14 is a solenoid valve block, a primary chamber 15 is provided with a fan connection port 16, and a secondary air chamber 17 is connected to a primary air pipe 4. Reference numerals 18 and 19 indicate electromagnetic valves that open and close the valve ports 20 and 21 from the primary chamber 15 side, and are provided orthogonally to each other. The solenoid valve 19 was developed in 1986.
A flow path 24 is formed between the plunger 22 and the plunger guide 23 as in No. 121571,
The flow path 24 is connected to the control air passage 13. Further, a small hole 26 is provided in the valve body 25 of the valve.

Next, the operation of this configuration will be explained. The primary air blown by the fan enters the primary chamber 15 of the electromagnetic valve block 14, passes through the valve ports 20 and 21, flows into the air chamber 2 through the primary air pipe 4, and is sent into the vaporizer 3. On the other hand, a rotor 6 rotated by a motor 5
Petroleum is dripped onto the oil pipe 7 and the spray particles are vaporized in the vaporizer 3 heated by the heater 8 . The vaporized gas and the primary air flowing in from the air chamber 2 are mixed and stirred to form a combustible mixture, which is then passed through the nozzle 27.
flows into the fluid element 9, and each output port 10,
11 and guided to the combustion section where it is combusted. If the combustion capacity of this combustion device is switched in three stages, when the combustion capacity is high, both solenoid valves 18 and 19 are open, and when the combustion capacity is medium, only the solenoid valve 18 is closed. At this time, the flow path 24 of the solenoid valve 19
are closed, no control air flows and the mixture is diverted to the output ports 10,11. When it is weak, the solenoid valve 19 is also closed, and the primary air only flows through the small hole 26 provided in the valve body 25. At the same time, the flow path 24 is opened and control air flows into the control air passage 13, so that the flow of the air-fuel mixture is switched only to the output port 10. Needless to say, when the capacity is changed, the amount of oil supplied from the oil pipe 7 is also changed.

In this way, the primary air amount is varied by a solenoid valve, and the control air passage 13 is connected to one of the solenoid valves.
If solenoid valves are installed in parallel, control air passage 1
3 is difficult to connect and assemble, but by installing the solenoid valves orthogonally, other solenoid valves will not get in the way.
Easier to assemble.

(Effects of the invention) As described above, in this invention, the control air for the fluidic element is taken out from the solenoid valve for switching the primary air amount, so the number of parts can be reduced, and the solenoid valve can be used in other solenoid valves. Since they are orthogonally disposed, the assemblability is also improved. Furthermore, the solenoid valve block is no longer elongated in only one direction, which is advantageous in terms of its arrangement.

[Brief explanation of drawings]

The drawing is a sectional view of an embodiment of the present invention. 1...Fuel supply section, 9...Fluid element, 13...
Control air passage, 18, 19... Solenoid valve, 22...
Plunger, 23... Plunger guide, 24...
...Flow path.

Claims (1)

[Scope of utility model registration request] a fuel supply section that creates an air-fuel mixture using primary air from a fan and fuel; a fluid element that divides and switches the air-fuel mixture to a plurality of combustion sections;
In those equipped with a solenoid valve for switching the next air amount,
A combustion device characterized in that among these solenoid valves, a solenoid valve that takes out control air for a fluid element from between a plunger and a plunger guide is provided orthogonally to another solenoid valve.