JPH0590149U - Hot air heater - Google Patents

Abstract

(57) [Abstract] [Purpose] Cleaning the vaporizer to remove the tar accumulated in the nozzles and jet holes of the warm air heater to keep the vaporized gas jet state normal at all times. [Configuration] During cleaning, the temperature of the vaporizer 7 is higher than that when the burner 2 is in steady combustion (350 ° C)
The burner 2 is steadily combusted for a certain period of time (30 minutes) after the certain period of time (30 minutes), and the heating means 8 is operated after the certain period of time (30 minutes). Stop and stop the ejection hole 11 for a fixed time (150 seconds), and after closing the ejection hole 11 for a fixed time (150 seconds), the ejection hole 11 is opened and the notification means 21 is activated at the same time. did. [Effect] By removing tar, the burner's ejection hole can always be kept in a normal shape, avoiding eccentricity during vaporized gas jetting,
The tip of the cleaning rod does not stick to the ejection hole at the tip of the nozzle to facilitate the movement of the cleaning rod, and realizes a user-friendly warm air heater that can reliably confirm the completion of the cleaning operation even at a place away from the installation location. I can.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a hot-air heater in which tar accumulated in the ejection holes of a vaporizer is removed by a cleaning operation of the vaporizer.

[0002]

[Prior Art]

 When the hot air heater is operated using heavy kerosene, tar accumulates in the vaporizer, reducing the amount of combustion and vaporization of vaporized gas from the vaporizer becoming insufficient. Equipment needs cleaning.

The cleaning operation is performed at a temperature of the vaporizer higher than the temperature (about 280 ° C.) during normal combustion of the burner (about 350 ° C.) to raise the temperature of the above-mentioned tar, and the vaporized gas from the vaporizer is removed. Vaporized gas and tar are ejected into the atmosphere from the ejection hole of the nozzle (equipped with a cleaning rod), which is the ejection path.It is generally known that this cleaning operation is continued for a certain period of time (about 30 minutes). Has been.

If such a cleaning operation is frequently performed, tar gradually adheres to the inner peripheral portion of the ejection hole to block the ejection hole, and the jet flow of vaporized gas ejected from the ejection hole during combustion is eccentric. Problems such as the combustion balance of the burner that burns when gas is supplied may be lost.

[0007] Furthermore, the above-mentioned cleaning rod is stuck due to the tar that has blocked the ejection hole, causing a problem that the ejection hole remains blocked, and the solenoid that drives the cleaning rod is incompletely operated. Problems such as a beating sound also occur.

As an example of solving such a problem, as disclosed in Japanese Utility Model Laid-Open No. 63-148055, the carburetor is heated and maintained at a temperature of about 500 ° C., which is higher than that during normal combustion, during cleaning. The tar content adhering to the inside is thermally decomposed and vaporized to be discharged from the nozzle hole.While discharging, the display lamp is turned on, and after the cleaning operation is completed, the heating of the vaporizer is stopped and the display lamp is turned off to inform the user. There is a notification that the cleaning operation is completed.

On the other hand, as disclosed in Japanese Patent Laid-Open No. 3-113207, the temperature of the carburetor is also kept at a temperature higher than that during normal combustion for a certain period of time, and after the cleaning operation is completed, the nozzle hole is continuously opened for a certain period of time. However, there is also a method in which the gas in the vaporizer, which has been heated to a high temperature and becomes high pressure, is discharged into the atmosphere from the nozzle hole due to the pressure difference.

[0008]

[Problems to be solved by the device]

 However, in the former case, although it is possible to reliably prevent ignition mistakes and ignition delays during operation after completion of the cleaning operation, the cleaning operation is not performed when the user is away from the installation location of the warm air heater. There is a problem in that the completion is not clear, and the gas in the vaporizer, which burned off the tar component adhering to the vaporizer during the cleaning operation, was insufficiently released into the atmosphere, which was a problem.

In the latter case, although the operation is almost the same as that of the present application, the cleaning operation of the vaporizer cannot be performed unless the conditions for the vaporization operation (cleaning operation) of the vaporizer are satisfied. In addition to the problem, the completion of the cleaning operation is not clear like the former publicly known example.

[0010]

[Means for Solving the Problems]

 In carrying out the cleaning operation in order to solve the above problems, the present invention keeps the temperature of the vaporizer higher than the temperature of the vaporizer during steady combustion of the burner for a certain period of time and then keeps the burner steady for a certain period of time. The cleaning operation is performed by burning, closing the ejection hole for a certain time after the elapse of this certain time, and then opening the ejection hole after a certain time elapses during the closing of the ejection hole. In addition, the notification means is operated at the same time as the opening of this ejection port.

[0011]

[Action]

 After the burner is kept at a temperature higher than that of the vaporizer during steady combustion for a certain period of time, the burner is steadily burned for a certain period of time, and the tar in the vaporizer is pushed out to the nozzle by the pressure of the vaporized gas during combustion. It also removes tar from the nozzle tip (spout hole).

Further, by closing the ejection hole for a certain period of time after the burner has been steadily combusted for a certain period of time, the above-described cleaning rod smoothly moves to a predetermined position of the ejection port from which tar has been removed.

Furthermore, the completion of the cleaning operation of the vaporization device becomes clear by the operation of the notification means at the same time when the ejection hole is opened.

[0014]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS. 1 to 4.

FIG. 1 is a schematic cross-sectional view of a warm air heater, FIG. 2 is an explanatory view of a main part of the same, and FIG. 3 is a partial cross-sectional side view of the vaporizer.

In these figures, reference numeral 1 is a main body of a warm air heater, and a burner base 3 for fixing a burner 2 is provided on an inner bottom portion thereof. A hole 4 for taking in primary and secondary air for combustion is provided in the lower rear part of the burner base 3, and a secondary combustion is provided around the flame hole (not shown) of the burner 2 on the upper surface of the burner base 3. A plurality of small holes 5 are provided to send air in a well-balanced manner.

Reference numeral 6 denotes a blower that is a blowing means of a warm air heater provided on the back surface of the main body 1.

Reference numeral 7 denotes a vaporizer (hereinafter, vaporizer) which is provided inside the main body 1. A heating means (hereinafter, vaporizer heater) 8 is installed in the substantial center of the vaporizer 7, and outside the vaporizer 7. A temperature detecting means (hereinafter, a vaporizer thermistor) 9 for detecting the temperature of the vaporizer 7 is attached.

Reference numeral 10 is a nozzle having an ejection hole 11 at its tip, which serves as a passage for the vaporized gas ejected from the vaporizer 7 from the ejection hole 11 and is a cleaning device for opening and closing the ejection hole 11 inside. It has 12 bars.

Reference numeral 14 denotes a solenoid, which is attached to the nozzle 10 via a guide pipe 13, and the cleaning rod 12 closes the ejection hole 11 when the solenoid 14 operates. Further, a suction port (not shown) of the burner 2 is located at a corresponding portion of the nozzle 10.

Reference numeral 15 denotes a spring, which is provided in the guide pipe 13 so that the cleaning rod 12 always opens the ejection hole 11 by the spring 15 when the solenoid 14 is not operating.

Reference numeral 16 denotes an oil supply tank which is detachably attached to the main body 1 and supplies fuel oil to an oil pan 17 provided inside the main body 1.

Reference numeral 18 denotes a pump for supplying the fuel oil in the oil receiving tray 17 to the carburetor 7, one end of which is immersed in the fuel oil in the oil receiving tray 17, and the other end is connected to the carburetor 7.

Reference numeral 19 denotes a control means (hereinafter referred to as a control circuit) including a microcomputer or the like, which is provided in the upper part of the main body 1. A part of the input from the control circuit 19 is applied to the carburetor thermistor 9 and the carburetor 7. It is connected to the tar removing means 20 operated at the start of cleaning, and its outputs are connected to the vaporizer heater 8, the blower 6, the solenoid 14, the pump 18, and the notification means 21 which sounds when cleaning of the vaporizer 7 is completed.

The operation of the embodiment thus configured will be described below.

FIG. 4 is a timing chart of related departments during the cleaning operation of the warm air heater. The process of the cleaning operation will be described with reference to this figure.

At the start of cleaning the hot air heater, first, the tar removing means 20 is operated.

The control circuit 19 to which the signal from the means 20 is input commands the energization control to the carburetor heater 8, and by this energization control, the temperature of the carburetor 7 is maintained for a fixed time T1 (about 30 minutes) during the normal burner burner. The temperature t1 (about 350 ° C.) higher than the temperature t2 (about 280 ° C.) of the vaporizer 7 is maintained for a predetermined time T1 (30 minutes).

All the operations thereafter are controlled by the control circuit 19.

The tar accumulated inside the vaporizer 7 is softened while being kept at this temperature t1 (about 350 ° C.), and a part thereof is lightened and vaporized.

During the fixed time T2 (about 30 minutes) after the fixed time T1 (about 30 minutes) has passed, the burner 2 is steadily burned while the temperature t2 of the vaporizer 7 is kept at about 280 ° C.

Up to this point, the cleaning rod 12 opens the ejection hole 11 by the spring 15 because the solenoid 14 is not operating.

The tar accumulated in the carburetor 7 during the steady combustion is softened or lightened as described above and is discharged from the nozzle 10, and the cleaning proceeds.

After the elapse of this fixed time T2 (about 30 minutes), the heating operation of the heating means 8 is stopped, and the combustion of the burner 2 is automatically extinguished.

Immediately after the combustion of the burner 2 is extinguished, the solenoid 14 is driven to close the ejection hole 11 by the cleaning rod 12 for a predetermined time T3 (about 150 seconds), and the unburned gas in the carburetor 7 is discharged from the tip of the nozzle 10. Be careful not to spout it into the atmosphere from the spouting hole 11.

After the elapse of the predetermined time T3 (about 150 seconds), the energization of the solenoid 14 is stopped, and the cleaning rod 12 is driven by the spring 15 to open the ejection hole 11.

When the opening of the ejection hole 11 is detected, the notification means 21 is activated to notify the completion of the cleaning operation of the carburetor 7.

[0038]

[Effect of the device]

 As described above, according to the present invention, the tar in the vaporizer is liquefied or liquefied by maintaining the temperature of the vaporizer at a temperature higher than that during steady combustion for a certain period of time and then continuously burning the burner for a certain period of time. In addition to being vaporized and pushed out by the nozzle to be removed, the vaporized gas and liquid tar also remove the tar adhering to the jet hole at the tip of the nozzle when passing through the nozzle, so the jet hole is always in a normal state. Since it can be held at a high temperature, a burner that does not cause eccentricity of the vaporized gas jet from the jet hole can be realized.

Further, after the burner is steadily burned, the cleaning rod is driven to close the ejection hole for a certain period of time, so that the tip of the cleaning rod does not stick to the ejection hole portion and the cleaning rod moves smoothly. It was

Further, since the notification means operates at the same time as the opening of the ejection hole, it is clear that the cleaning operation of the carburetor is completed. Therefore, even when the user is away from the installation location of the warm air heater. We were able to realize a hot-air heater that is easy to use and can reliably confirm the completion of cleaning operations.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view of a hot air heater according to an embodiment of the present invention.

FIG. 2 is a schematic main part explanatory view of a warm air heater according to an embodiment of the present invention.

FIG. 3 is a partial cross-sectional side view of a vaporizer according to an embodiment of the present invention.

FIG. 4 is a diagram showing an example of a timing chart of related departments during a cleaning operation of the hot air heater according to the embodiment of the present invention.

[Explanation of symbols]

1 main body 2 burner 7 vaporizer 8 heating means 9 temperature detection means 10 nozzle 11 ejection hole 14 solenoid 19 control means 21 notification means t1 temperature of vaporizer held during cleaning operation t2 held during steady combustion after cleaning operation Temperature of vaporizer T1 Time when vaporizer is kept at constant temperature during cleaning operation T2 Steady state after vaporization operation T2 Time when vaporizer is kept at constant temperature during combustion T3 Steady state after cleaning operation Time the nozzle remains closed after combustion is stopped

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location F23N 5/26 101 B

Claims (2)

[Scope of utility model registration request] 1. A vaporizer (7) for vaporizing fuel oil, heating means (8) for heating the vaporizer, and temperature detection means (9) for detecting the temperature of the vaporizer heated by the heating means. A nozzle (10) provided with the vaporizer and having a jet hole (11) for jetting vaporized gas heated and vaporized by the vaporizer, and a nozzle provided in the nozzle and controlling opening and closing of the jet hole. A cleaning rod (12), a solenoid (14) for driving the cleaning rod, a control means (19) for controlling energization of the solenoid and the heating means, the control means, the vaporization device, and the heating means. A main body (1) accommodating and installing the temperature detecting means and the solenoid; and a burner (2) provided in the main body (1) for burning vaporized gas ejected from the ejection holes. Control means accumulates in the ejection holes, etc. In the warm air heater in which the cleaning operation of the vaporizer is performed, the control means controls the solenoid to close the ejection hole by the cleaning rod and control the heating means. The temperature of the vaporizer detected by the temperature detection means is set to the temperature (t
2) A higher temperature (t1) is maintained for a fixed time (T1), and the next fixed time (T2) after this fixed time (T1) elapses, the solenoid is driven to open the ejection hole and the vaporizer The temperature is returned to the temperature at the time of steady combustion (t2) to make the burner steady combustion, and after the elapse of the fixed time (t2), the solenoid is driven to close the ejection hole again and stop the heating means. The hot air heater is characterized in that after a certain period of time (T3) has elapsed, the solenoid is driven to reopen the ejection holes to perform a cleaning operation. 2. The warm air heater according to claim 1, wherein the main body is provided with an informing means (21) which sounds at the same time when the ejection hole is opened by the control means.