JPS5984012A - Vaporizing burner - Google Patents

Abstract

PURPOSE:To operate a thermostat accurately even at low temperatures by a method wherein a detecting section capable of detecting the combustion condition in a combustion chamber or a gasifying chamber is made to confront the outer cylinder of the vaporizing burner and the thermostat is attached to the detecting section through a heat transfer rod 43. CONSTITUTION:The detecting section 42 in the shape of a screw is provided within the gasification chamber 35 in the outer cylinder 24 of the vaporizing burner. The detecting section 42 projects rearward and is provided with the heat transfer rod 43 which is attached with the thermostat 44. Therefore, the heat transfer rod 43 and the thermostat 44 are subjected to air proportional to the rotation of a blower 29 so that the thermostat 44 functions accurately without heating itself to a high temperature. Consequently, the thermostat operates accurately at low temperatures.

Description

[Detailed description of the invention] The present invention relates to an evaporative burner.

Conventionally known vaporizers for grain drying equipment, for example, as described in Japanese Utility Model Application Publication No. 55-64622, use a rotary heating bowl to rotate and stir kerosene supplied from a kerosene supply device. However, the combustion air for vaporizing and gasifying the kerosene used the powerful air flowing in the ventilation tube.

Since the present invention also improves the air blowing mechanism of the known example, the deficiencies of the known example will be explained as follows.

- Generally, inside the ventilation cylinder of a circulation-type humidity-controlled grain dryer,
At least, there is a strong wind of 1 to 2 m3/sec per 11 tons of unhulled rice, so it is naturally possible to burn kerosene by using that wind.

With this type, when the amount of oil is reduced to make the flame smaller, the wind may be too strong and cause a misfire.

Therefore, the present invention prevents misfires by providing a separate blower exclusively for the vaporizing burner that blows combustion air, and by freely controlling the separately installed blower exclusively for the vaporizing burner, it is possible to achieve temperatures up to 1300°C. In addition, the installation of a thermostat for detecting abnormal overheating of the vaporizing burner formed as described above requires a special mechanism. It is something. In other words, it was previously possible to access the thermostat, but previously it was located outside the burner. However, the temperature on the outside of the burner hardly changes even if the burn-up is changed, so 1
1E was not certain.

Therefore, in the present invention, a vaporizing burner is provided in a ventilation tube such that a drying air passage is formed between an inner wall of the ventilation tube and an outer periphery of the vaporization burner, and the vaporization burner is provided with a drying air passage that flows through the vaporization burner. Separately from the fan for the drying air, there is a blower exclusively for the vaporizing burner. A vaporizing burner including a thermostat that can detect the combustion degree of the vaporizing burner in an air passage, a vaporizing burner in a ventilation tube, and a drying air passage between an inner wall of the ventilation tube and an outer periphery of the vaporization burner. The vaporizing burner is equipped with a dedicated air blower for the vaporizing burner in addition to a fan for drying air flowing through the drying air passage, and the vaporizing burner building air blower is controlled by a variable motor to control the burnup level. A combustion chamber and a cassification chamber of the vaporization burner, the vaporization burner being formed so that the amount of air blown is changed proportionally, and a thermostat capable of detecting the combustion degree of the vaporization burner is provided in the air path of the blower. The outline of the structure of the vaporizing burner is that a detection part capable of detecting the combustion state in the combustion chamber or gasification chamber faces the outer cylinder forming the combustion chamber, and the thermostat is provided to the detection part via a heat transfer rod. That is.

To explain with the drawings, Fig. 1 is a longitudinal cross-sectional view of a humidity control drying device using a vaporizing burner according to the present invention, where l is a two-part humidity control tank, and the two parts of the humidity control tank l are funnel two. .2, and the funnel 2.20 has a vertical flow type drying chamber 3 at its end.
．． Connect the upper ends of 3.

In the embodiment, the humidity control tank 1 and the down-flow drying chamber 3 are integrated, but they may be separated.

A hot air supply chamber 4 is formed between the pair of left and right downstream drying chambers 3.3, and a hot air exhaust chamber 5.5 is formed outside each of the downstream drying chambers 3.3. A rotary valve 6.6 is installed at the lower end of the flow F type drying chamber 3.3,
The lower side of the rotary valve 6.6 is surrounded by a receiving gutter 7, and a screw conveyor 8 is installed horizontally at the upper center of the receiving gutter 7.
The grains conveyed laterally by the screw conveyor 8 are fried by an elevator and then stacked and returned to the humidity control tank 1. FIG. 2 is a cross section taken along line II-II in FIG. 1. A ventilation tube 9 is provided at one end of the hot air supply chamber 4, and an exhaust tube 10 is attached to the discharge side of the hot air exhaust R chamber 5.5. A suction fan 11 is installed in the exhaust pipe 10, and when the suction fan 11 rotates, hot air is circulated as shown by the arrow in FIG.

The suction fan 11 is of a powerful type at all times, such that at least 2 m3/sea of air is sent per ton of unhulled rice.

Inside the ventilation tube 9, a vaporizing burner 12 is installed as shown in FIG.
is installed. That is, at the center of the ventilation front 9, the ventilation cylinder 9 is provided with a ventilation cylinder 13 which is formed to have a much smaller diameter than the inner diameter of the ventilation cylinder 9.

A vertical mounting plate 14 is provided within the blast tube 13, and a motor 15 having a much smaller diameter than the blast tube 13 is fixed to the center of the attachment plate 14. A plurality of through holes 16 are bored in the first plate 14. The rotation shaft 17 of the motor 15 extends horizontally forward and connects to the tip opening 1 of the blower tube 13.
8, and a bowl-shaped heating bowl 19 is fixed to the tip thereof. A tipper tube 20 having a small diameter tip is identified on the front side of the blow tube 13. The heating bowl 19 is in a state facing rearward (toward the blower tube 13 side),
The outer periphery of the tipper tube 20 is surrounded with a gap 21 formed therein. The heating bowl 19 is located inside the rotating shaft 17.
A conical portion 22 (diffuser) is attached to the blower tube 13, which has a large diameter on the bottom side and gradually becomes smaller in diameter according to a recent publication. Reference numeral 23 denotes a kerosene supply device, which extends forward inside the tipper tube 20 attached to the front side of the blast tube 13, and whose tip is connected to the conical portion 22.
It has an opening at the top. The base of the tipper tube 20 is fixed to the front surface of the blower tube 13, and the outer tube 24 is attached thereto.
The base of is also fixed. The outside@24 largely surrounds the outside of the heating bowl 19. The lower wall 25 of the ventilation pipe 9 in FIG.
A suction pipe 26 is attached to the lower wall 25 from the F side and protrudes into the drying air passage 28. The suction pipe 26 is for sucking the air flowing through the dry air passage 28, and its upper end is formed into a #J portion 27 with a slope that is lower toward the front. The dry air passage 28 in the gap 9 is opened L1. The ventilation pipe 9
A blower 29 is mounted on the lower side of the lower wall 25, and the blower 29 and the air inlet part 30 of the vaporizing burner 12 are connected with a removable elastic air blower pipe, and a fastener is attached. 3
I can close it with 2. The air blower @29 is rotated by a variable motor 37, and an IC circuit rotates the air blower 29 at a desired speed.

Therefore, 33 is a combustion plate, and 34 is a ceramic heater 13.
5 is a gasification chamber, and 36 is a combustion chamber. The outer cylinder 24 forming the combustion chamber 36 has a drain pipe 38 at its lowest part.
Attach the top end of the An opening 39 is formed in the lower wall 25 of the ventilation tube 9, where the outer tube 24 is located, and an opening 39 is formed in the opening 39.
A drain cup 41 having openings 40 on two sides is removably fitted. The end of the drain pipe 38 is opened and faces the opening 39 of the drain cup 41.

A screw-shaped detection part 42 is provided in the gasification chamber 35 of the outer cylinder 24, and the detection part 42 protrudes rearward. takes the thermostat 44 (=J). Therefore, the heat transfer body 43
The thermostat 44 is exposed to the air from the blower 29.

Next, we will discuss the effect.

Although the diagram is omitted, when undried undried rice is supplied to the inlet formed at the bottom of the elevator, the undried rice is fried by the elevator and supplied into the humidity control tank l, where it falls under its own weight and flows down. Fill the drying chamber 3.3, funnel 2.2, and humidity control tank 1 to capacity. When the switch is turned on in this state, electricity is applied to the motor that rotates the suction fan ll installed in the exhaust pipe lO, and the suction fan ll is rotated at a furious speed, and the paddy 1 +- at least 2 m per unit
Supply drying air below 3/sea. The motor 15 that rotates the heating bowl 19 and the variable motor 37 that rotates the blower 29 are also energized to rotate the heating bowl 19 and the blower #129. Therefore, the kerosene supplied by the kerosene supply device M23 is rotated at 2500 revolutions per minute. Since it is dropped on the part 22, it is blown away by the centrifugal force, reaches the inner surface of the heating bowl 19, rotates together, and is blown off by the centrifugal force. The blown air passes through the inclined part 27 → the elastic blower pipe 31 → the through hole 16 → the open end part 18 → the gap 21, and the amount of air corresponding to the amount of kerosene is blown, so the kerosene is It is gasified, becomes a completely mixed gas in the waste chamber 35, and is injected into the combustion chamber 36 outside (forward) from the combustion plate 33.Therefore, by energizing the ceramic heater 34, it can be easily mixed like ordinary gas. The flame ignites and burns.Therefore, the flame makes the outer surface of the heating bowl 19 red hot.Then,
The kerosene in the gap 21 on the inner surface of the heating bowl 19 becomes more and more actively gasified, and finally becomes a blue flame and burns at a high temperature of 1300°C.

Therefore, the hot air with n-color flame is supplied from the hot air supply chamber 4 to the down-flow drying chambers 3, 3, but unlike the conventional combustion with red flame, the drying air with blue flame does not reduce the quality of the grain. .

In this case, the kerosene initially ejected into the outer cylinder 24 does not burn completely for a while, so it turns into oil droplets and enters the outer cylinder 24.
4, and is taken out to the drain cup 41 via the drain pipe 38. Since it opens facing the upper surface opening 39 of the drain cup 41 in the ventilation pipe 9, there is no pressure difference between the entrance and exit, and therefore, the water drips smoothly.

Further, a screw-shaped detection part 42 is provided in the gasification chamber 35 of the outer cylinder 24, and the detection part 42 protrudes rearward, into which a heat transfer rod 43 can be inserted. In 43,
Since the thermostat 44 is attached, the heat transfer rod 43
Since wind proportional to the rotation of the blower 29 hits the thermostat 44, the temperature of the thermostat 44 does not become high even during low combustion when pack combustion is likely to occur, and the accuracy is high.

On the other hand, the grains dried by hot air are dropped little by little onto the receiving trough 7 by the rotation of the rotary valve 6, 6, collected by the screw conveyor 8, fried by the unloading plate A, and stacked on top of the unhulled rice in the humidity control tank 1. , gradually drained and dried again. If this circulation drying is repeated about 5 to 6 times, the unhulled rice will be completely dried.

Conventionally known vaporizing burners for grain drying equipment rotate and stir kerosene supplied from a kerosene supply device using a rotating heating bowl, as described in, for example, Japanese Utility Model Application Publication No. 55-64622. However, the combustion air for vaporizing the kerosene and gasifying it used a part of the powerful air flowing inside the ventilation pipe. In addition, in general, a strong wind of at least 1 to 2 m3/sec per ton of unhulled rice flows through the ventilation cylinder of a circulation-type humidity-controlled grain drying device, so if that wind is used, it is natural to burn kerosene. is possible, but in this format, no oil.

When narrowing down the flame to make it smaller, the wind may be too strong and cause a misfire. In addition, the thermostat could be accessed in the past, but previously it was located outside the burner. However, the temperature on the outside of the burner hardly changes even if the burn-up is changed, so it was not accurate.

The present invention provides a vaporizing burner 12 in a ventilation tube 9 such that a dry air passage 28 is formed between an inner wall of the ventilation tube 9 and an outer periphery of the vaporization burner 12.
2, a blower 29 dedicated to the vaporization burner is installed separately from the fan for the drying air flowing through the drying air passage 28, and the blower 29 dedicated to the vaporization burner is equipped with a variable motor 37.
A vaporizing burner formed so that the amount of air blown varies in proportion to the burnup degree, and a thermostat 44 that can detect the burnup degree of the vaporization burner 12 in the air path of the blower 29, and a ventilation tube. 9, a vaporizing burner 12,
A drying air passage 28 is provided between the inner wall of the ventilation tube 9 and the outer periphery of the vaporizing burner 12, and the vaporizing burner 12 is equipped with a fan for the drying air flowing through the drying air passage 28. Separately, a blower 29 dedicated to the vaporization burner
The blower 29 for the vaporizing burner jpI is configured to change the amount of air blowing in proportion to the burn-up by a variable motor 37, and the burn-up of the vaporizer burner 12 is detected in the air path of the blower 29. In the vaporizing burner provided with a thermostat 44, the vaporizing burner 12
The outer cylinder 24 that forms the combustion chamber 36 and the gasification chamber 35 is provided with a detection section 42 that can detect the combustion state within the combustion chamber 36 or the gasification chamber 35, and the detection section 42 includes a heat transfer rod. 4
Since the vaporizing burner is provided with the thermostat 44 via the thermostat 44, (1) there is no misfire.

(2) The thermostat 44 operates accurately even at low temperatures.

This effect can be expected.

[Brief explanation of the drawing]

Figure f81 is the overall longitudinal sectional front view, Figure 2 is the same II-II.
3 is a sectional view of the inside of the ventilation tube, FIG. 4 is a sectional view of the burner, and FIG. 5 is a partially cutaway front view of the ventilation tube. Humidity control tank 1, funnel 2, flow drying room 3, hot air supply room 4
, hot air exhaust chamber 5, rotary valve 6, receiving gutter 7. Screw conveyor 85 HL tube 9, exhaust tube io, suction fan 11,
Vaporization/Hoehner 12, blower tube 13, holding plate 14, motor 15, through hole 16, rotating shaft 17. Tip opening part 18. Heating bowl 19, tipper cylinder 20, gap 21, conical part 22, kerosene supply device 23, outer cylinder 24. Lower wall 25, suction pipe 26
, inclined opening 27, dry air passage 28, blower 29, air inlet 30, elastic air pipe 31, fastener 32, combustion plate 3
3, ceramic heater 34, gasification chamber 35, combustion chamber 3
6, variable motor 37, drain pipe 38, opening 3
9, opening 40, drain cup 41, detection part 42, heat transfer rod 43, thermostat 44° Patent applicant Hirobe Shinseki, patent attorney for Iseki Agricultural Machinery Co., Ltd. 1. □, 1 other person'

Claims (2)

[Claims] (1) A vaporizing burner is provided in the ventilation tube in such a manner that a dry air passage is formed between the niI ventilation tube wall and the outer periphery of the vaporization burner, and the vaporization burner is provided with air flowing through the dry air passage. Separately from the drying fan, a blower exclusively for the vaporizing burner can be obtained. A vaporizing burner that is equipped with a thermostat in the air path that can detect the combustion level of the vaporizing burner. (2) A vaporizing burner is provided in the ventilation tube in such a manner that a drying air passage is formed between the inner wall of the ventilation tube and the outer periphery of the vaporization burner, and the vaporization burner is provided with a drying air that flows through the drying air passage. Separately from the wind fan, a blower dedicated to the vaporization burner can be obtained, and the blower dedicated to the vaporization burner is configured so that the speed of air blowing changes from large to small in proportion to the burn-up degree using a variable motor. In a vaporizing burner equipped with a thermostat capable of detecting the combustion degree of the vaporizing burner in the path, an outer cylinder forming a combustion chamber and a gasification chamber of the vaporizing burner includes a thermostat that detects the combustion state in the combustion chamber or gasification chamber. 1. A vaporizing burner, which has a detecting section facing the sensor, and the thermostat is provided to the detecting section via a heat transfer rod.