JP2000346342A - Combustion control device - Google Patents

Abstract

(57) [Summary] [Problem] A combustion control device used in an oil hot air heater, which roughly displays a combustible time after a refueling is detected, informs a user of a remaining combustion time without causing confusion, and heats the heating. Improve usability without sacrificing feeling. SOLUTION: The display of the remaining time until immediately before the final display is as follows.
The display time must be longer than the displayed time since the switch, and the final display time should be shorter than the displayed time since the switch.
The user can be notified that the combustible time has been shortened, and after refueling is detected, the user can change the amount of combustion, for example, the conditions of the use atmosphere change and the heating load changes, thus impairing the feeling of heating. There is no need to worry, and the remaining combustion time can be set to an optimal time according to the conditions used, and the user can be notified of the amount of fuel remaining in the tank 2 without causing confusion to the user without refueling detection. The remaining combustion time is notified by means 23, and the usability is greatly improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combustion control device for use in a petroleum hot air heater or the like.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 5, a petroleum hot air heater of this type is a main body case 1 having a tank 2 holding liquid fuel at a lower portion thereof and a detachable upper portion of the tank 2. A cartridge tank 3 is provided. The tank 2 has an oil level detecting means 4 such as a float type for detecting the oil level of the fuel in the tank 2, and the fuel in the cartridge tank 3 is measured by the weight of the cartridge tank 3. Refueling detection means 4 for detecting the sky
A is provided.

[0005] A pump 5 is mounted on the upper surface of the tank 2.
From the upper end, fuel is supplied to the vaporizing section 7 kept at a predetermined temperature or higher by the heater 8 and the temperature detecting means 9 via the oil supply pipe 6.

[0004] Reference numeral 10 denotes a nozzle portion disposed at the tip of the vaporizing section 7, which sucks primary air by an ejector effect provided in a horizontal direction at a downstream side of the vaporizing section 7 to separate the fuel gas vaporized by the vaporizing section 7. Into the mixing tube 11. Reference numeral 12 denotes a line-shaped burner unit integrated with the mixing pipe 11, which burns the mixed gas from the mixing pipe 11, and has a combustion sensor 13 disposed near the combustion sensor 13 for detecting the combustion state of the burner unit 12.

[0005] A combustion tube 14 guides the combustion exhaust gas from the burner section 12 upward, and a blower 15 for taking in and sending out the indoor air flow is disposed behind the combustion tube. 16 is the combustion cylinder 14
This is a duct that mixes the combustion exhaust gas from the air with the indoor air flow from the blower 15 to generate hot air.

As shown in FIG. 6, reference numeral 17 denotes a pump 5,
A control unit for driving and controlling the heater 8, the blower 15, and the like, which is determined in advance based on an operation condition signal input from the operation unit 18, an output of the oil level detecting unit 4 and the output of the combustion sensor 13, and an output of the temperature detecting unit 9 and the like. The control is performed in such a sequence that the operation condition of the burner unit 12 is displayed on the display unit 19.

In the above configuration, the vaporizing section 7 is kept at a predetermined temperature or higher by the heating control of the heater 8 by the temperature detecting means 9, and vaporizes the fuel supplied from the pump 5 through the oil supply pipe 6. The vaporized fuel gas is supplied to the vaporizing section 7.
The surrounding air is ejected from the nozzle portion 10 at the tip, and the surrounding air is sucked and mixed by the ejector effect, and the mixed gas is supplied into the burner portion 12 through the mixing pipe 11, and is ejected from the flame hole portion to burn. Is done.

The generated combustion exhaust gas is guided upward by a combustion tube 14 disposed so as to cover the periphery of the burner portion 12, and mixed with a room air flow from a blower 15 by a duct 16 covering the combustion tube 14. It is discharged as warm air and used for heating. Then, the control unit 17 changes the driving frequency and applied voltage of the pump 5 based on an operation condition signal input from the operation unit 18 in comparison with the ambient air temperature to control the fuel supply amount. As the primary air volume increases or decreases, the amount of combustion can be changed while maintaining a constant fuel-to-air ratio.

When the amount of fuel in the cartridge tank 3 is reduced due to the use of the fuel in the cartridge tank 3 and the weight in the cartridge tank 3 is reduced, the controller 17 detects that the amount of oil in the cartridge tank 3 is reduced by the weight. The means 4A detects and causes the display unit 19 to display a first oil-out indication. Then, when the fuel is further used and becomes low and the oil level in the tank 2 becomes low, the oil level detecting means 4 detects the oil level and displays the second oil level on the display unit 19. The combustion in the burner section 12 is stopped after a predetermined time has elapsed so that the combustion is stopped before the fuel in the tank 2 runs out and the pump 5 cannot send the fuel. When the combustion of the burner unit 12 causes an abnormality for some reason, for example, when the combustion amount becomes extremely small, the control unit 17 stops the combustion by detecting the abnormality by the combustion sensor 13 and stops the combustion. , The display section 19 is adapted to display a display in accordance with the details of the combustion abnormality.

[0010]

However, in such a conventional oil hot air heater, the fuel in the tank 2 is used less and the oil level in the tank 2 becomes lower, so that the oil level becomes higher. Is detected by the oil level detecting means 4 and a display of oil shortage is displayed on the display unit 19, and then the burner is stopped after a predetermined time elapses so as to stop combustion before the fuel in the tank 2 runs out and the pump 5 cannot send fuel. Although the combustion of the unit 12 is stopped, the driving frequency and the applied voltage of the pump 5 are changed based on an operating condition signal and the like input from the operating unit 18 in comparison with the ambient atmosphere temperature to supply the fuel. When the amount is adjusted, the amount of fuel used in the tank 2 changes,
There has been a problem that the combustible time fluctuates and the user is confused.

For this reason, if the above-mentioned predetermined time is set in accordance with the maximum combustion time so that the fuel does not run out within the predetermined time, the fuel is usually burned at various combustion amounts, for example, the combustion amount is minimized. In such a case, the problem that the combustible time becomes extremely short occurs, and after the oil level detecting means 4 detects the oil level in the tank 2 and makes the display unit 19 display the second oil level, How to fix the amount of combustion,
For example, if the combustion amount is fixed to a minimum and the combustion can be performed for a long time, there is a problem that the feeling of heating is impaired when the temperature is cold.

Further, a method has been considered in which the combustible time is displayed after the oil level detecting means 4 detects the oil level in the tank 2. Since the time fluctuates, if the user is not confused, there is no other way but to set the combustible time in accordance with the maximum combustion or to fix the combustion amount, which causes the same problem as described above. It was thought.

The present invention solves the above-mentioned problem, and displays the remaining time obtained by subtracting a predetermined time from the shortest combustible time after fueling is detected, so that the tank 2 can be displayed to the user.
The purpose is to roughly indicate how many hours or more can be burned with the fuel in the interior, inform the user of the remaining burning time without causing confusion, and improve the usability without impairing the feeling of heating. .

[0014]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a tank for storing fuel, an oil level detecting means for detecting the oil level of the fuel in the tank, and suctioning fuel from the tank. A pump for discharging, a burner section for burning fuel supplied by the pump, a combustion sensor disposed near the burner section to detect a combustion state of the burner section, and a burner section covering the burner section. A combustion cylinder that guides the combustion exhaust gas upward, a duct that covers the combustion cylinder and mixes the combustion exhaust gas with the indoor air flow from the blower to generate hot air, an operation unit that sets operating conditions of the pump and the like, and the operation A control unit that controls the operating conditions of the pump and the like in accordance with the setting of the unit to control the combustion of the burner unit, and a display unit that displays the state of the operating conditions of the burner unit based on a signal from the control unit. The display unit includes a refueling detection notifying unit that displays a state after the refueling is detected, and the control unit detects refueling when the oil level in the tank is equal to or less than a predetermined value by a signal of the oil level detecting unit. According to the fuel used by controlling the pump, a signal is sent by the refueling detection notifying means to display the remaining time obtained by subtracting a predetermined time from the shortest combustible time of the fuel in the tank, and the final display of the remaining time Is the same as the previous display, and is configured to send a signal to indicate that the shortest possible combustion time has become equal to or less than the remaining time display by another expression method such as a lamp.

According to the above invention, the display of the remaining time until immediately before the final display is set to be equal to or longer than the displayed time from the time of switching, and the final display is set to be equal to or less than the displayed time from the time of switching. The user can be notified that the time has become short, and it is not necessary to count down the remaining time and display "0" at the end, and it is not necessary to switch to the final display and immediately stop burning.

That is, after the fuel in the tank becomes lower than a predetermined value and refueling is detected, until the final display, the combustible time counts down to the shortest combustible time, during which the combustion amount changes and the combustion amount changes. When there is a state other than the maximum combustion, it corresponds to the remaining fuel corresponding to the combustion time that increases accordingly and the predetermined time subtracted from the shortest combustible time of the fuel in the tank by the refueling detection notification means after refueling detection The remaining fuel added can be consumed during the final display.

Therefore, after the fuel in the tank becomes equal to or less than the predetermined value and refueling is detected, the user can change the amount of combustion such as a change in the condition of the use atmosphere and a change in the heating load. And the remaining combustion time can be set to an optimal time according to the conditions used, and the user can know how much fuel is left in the tank with the refueling detection notification means without causing confusion to the user. Notifying the remaining combustion time, the usability is greatly improved.

[0018]

DETAILED DESCRIPTION OF THE INVENTION The invention of claim 1 includes a tank for storing fuel, an oil level detecting means for detecting an oil level of fuel in the tank, a pump for sucking and discharging fuel from the tank, A burner section for burning fuel supplied by a pump, a combustion sensor disposed near the burner section to detect a combustion state of the burner section, and a combustion exhaust gas covering the burner section and generated by the burner section; A combustion cylinder that guides the combustion cylinder, a duct that covers the combustion cylinder and mixes with the combustion exhaust gas and the indoor air flow from the blower to generate hot air, an operation unit that sets operating conditions such as the pump, and a setting of the operation unit. A control unit that controls operating conditions of the pump and the like in accordance with the above to control combustion of the burner unit, a display unit that displays a state of the operating condition of the burner unit based on a signal from the control unit, display And a refueling detection notifying means for displaying a state after refueling is detected.The control unit detects refueling when the oil level in the tank is equal to or less than a predetermined value based on a signal from the oil level detecting means, and controls the pump. Depending on the fuel used, a signal is sent by the refueling detection notifying means to display the remaining time obtained by subtracting a predetermined time from the shortest combustible time of the fuel in the tank, and the final display of the remaining time is the immediately preceding display. A signal is sent to indicate that the shortest combustible time has become equal to or less than the remaining time display by another expression method such as a lamp.

The display of the remaining time until immediately before the final display is equal to or longer than the displayed time from the time of switching.
The final display can be notified to the user that the combustible time has been shortened by setting the display time to be equal to or less than the displayed time from the time of switching, and the remaining time is counted down so that "0" is not displayed at the end. It becomes better and there is no need to stop burning immediately after switching to the final display.

That is, after the fuel in the tank becomes lower than the predetermined value and refueling is detected, until the final display, the combustible time counts down to the shortest combustible time, during which the combustion amount changes and the combustion amount changes. When there is a state other than the maximum combustion, it corresponds to the remaining fuel corresponding to the combustion time that increases accordingly and the predetermined time subtracted from the shortest combustible time of the fuel in the tank by the refueling detection notification means after refueling detection It is time to consume the amount of the remaining fuel added during the final display.

Therefore, after the fuel in the tank becomes equal to or less than the predetermined value and refueling is detected, the amount of combustion can be changed by the user, such as a change in the condition of the use atmosphere and a change in the heating load. And the remaining combustion time can be set to an optimal time according to the conditions used, and the user can know how much fuel is left in the tank with the refueling detection notification means without causing confusion to the user. Notifying the remaining combustion time, the usability is greatly improved.

According to a second aspect of the present invention, the control unit detects the refueling when the oil level in the tank is equal to or less than a predetermined value based on the signal of the oil level detecting means, and controls the pump to detect the refueling according to the fuel used. A signal is sent by the notification means to gradually display the remaining time display obtained by subtracting a predetermined time from the shortest combustible time of the fuel in the tank, and the final display of the remaining time is a display other than a number, and A signal is sent to indicate that the time is extremely low.

The same effect as the first aspect is obtained,
Since the final display of the remaining time is a display other than the number and it is displayed that the combustible time has become extremely short, the display of the remaining time immediately before the final display after refueling detection is displayed in hours, such as minutes. From the numerical display of, the final display is switched from a numerical display such as time to a character display such as "EM" which means "empty", so that it is clear to the user that the fuel in the tank is extremely low. The user can be informed, and the user can be encouraged to refuel, and the usability is greatly improved.

According to a third aspect of the present invention, the control unit detects refueling when the oil level in the tank is equal to or less than a predetermined value based on a signal from the oil level detecting means, and controls the pump to detect the refueling according to the fuel used. A signal is sent by the notification means to gradually display the remaining time display obtained by subtracting a predetermined time from the shortest combustible time of the fuel in the tank, and the final display of the remaining time is the same number or the same as the immediately preceding display. Display other than numbers,
A signal is sent to indicate that the shortest possible combustion time has become equal to or less than the remaining time display by another expression method such as a lamp.

The same effect as that of claim 1 or claim 2 is obtained, and the remaining combustion time after refueling detection is displayed by subtracting a predetermined time from the shortest combustible time of the fuel in the tank. For example, since the display is reduced at 10 intervals and displayed roughly without displaying finely, the user comes to judge as a guideline, and when the combustion amount changes during that time, there is a state other than the maximum combustion. In addition, the user does not feel a sense of discomfort even if the time between the combined remaining combustion time and the shortest possible combustion time is displayed in one step.

In other words, since the time obtained by adding the above-mentioned increased remaining combustion time and the shortest possible combustion time is displayed and corrected for each stage, the error is reduced, and the user can judge as a guide without any problem. Even if the combustion amount is changed after detection,
Since the combustion time is displayed while correcting for each stage,
The longest remaining combustion time can be displayed without impairing the feeling of heating, and usability is greatly improved.

According to a fourth aspect of the present invention, the control section detects refueling when the oil level in the tank is equal to or less than a predetermined value based on a signal from the oil level detecting means, and controls the pump to control the pump according to the fuel used.
A signal is sent by the refueling detection informing means to gradually display the remaining time display obtained by subtracting a predetermined time from the shortest combustible time of the fuel in the tank, and the final display of the remaining time is the same as the immediately preceding display. Use a number or other display to indicate that the minimum combustible time has become less than the remaining time display using other expressions, such as a lamp, and to switch the display of the remaining time stepwise to another display such as a buzzer. It is configured to notify that switching has been performed by the notification means.

The same effect as in claim 3 can be obtained, and when the display of the remaining time is switched stepwise, another switch such as a buzzer informs the user that the display has been switched. It clearly informs the user that it is more than or less than the time indicated from the time when the other notification means has been activated, alerts the user of the remaining combustion time, and refuels the user. You will be prompted each time, greatly improving usability.

According to a fifth aspect of the present invention, the control section detects refueling based on a signal from the oil level detecting means when the oil level in the tank is below a predetermined value, and controls the pump to detect the refueling in accordance with the fuel used. A signal is sent by the notification means to gradually display the remaining time display obtained by subtracting a predetermined time from the shortest combustible time of the fuel in the tank, and the final display of the remaining time is the same number or the same as the immediately preceding display. Display other than numbers,
It is configured to display that the shortest combustible time has become equal to or less than the remaining time display by another expression method such as a lamp, and to fix the control amount of the pump at each stage of the display of the remaining time that changes stepwise.

The same effect as in the third aspect is obtained, and the control amount of the pump at each stage of the display of the remaining time which is switched stepwise is fixed, so that the calculation of the remaining time can be simplified. Control of the pump is simplified and the remaining time error is reduced.

According to a sixth aspect of the present invention, the control unit detects refueling when the oil level in the tank is equal to or less than a predetermined value based on a signal from the oil level detecting means, and controls the pump to detect the refueling in accordance with the fuel used. The notification means sends a signal to display the remaining time obtained by subtracting a predetermined time from the shortest combustible time of the fuel in the tank, and the final display of the remaining time is the same number as the immediately preceding display or a display other than the numeral. A signal was sent to indicate that the shortest possible combustion time was less than the remaining time display by another expression method such as a lamp, and the remaining time was switched to the final display, and the output of the combustion sensor was less than the predetermined output. At this time, the operation is stopped, and a signal is sent to the refueling detection informing means to indicate that the oil is out.

The same effects as those of claim 1 or claim 2 can be obtained, and when the remaining time is switched to the final display, the operation is stopped when the output of the combustion sensor falls below a predetermined output, and the refueling detection notifying means is used. Since the running out of oil is displayed, the fuel continues to burn until the fuel in the tank runs out and the pump can no longer send fuel, so the burning time after displaying the running out of oil becomes longer, and the time until refueling Can be lengthened, so that the convenience of the user is improved.
In addition, since the stop of combustion due to the abnormal combustion signal from the combustion sensor caused by the pump being unable to send fuel is displayed as a combustion stop display of running out of fuel on the display unit, an erroneous display can be prevented,
Safety can be secured.

According to a seventh aspect of the present invention, the control section detects refueling when the oil level in the tank is equal to or less than a predetermined value based on a signal of the oil level detecting means, and controls the pump to control the pump according to the fuel used.
A signal is sent by the refueling detection notifying means to display a display of the remaining time obtained by subtracting a predetermined time from the shortest combustible time of the fuel in the tank, and the final display of the remaining time is the same number or number as the previous display. In addition, a signal is sent to indicate that the shortest combustible time is less than the remaining time display by other expressions such as a lamp, and when the remaining time is switched to the final display, the pump control amount is changed. It is configured to be fixed to the minimum amount.

The same effect as in claim 1 or claim 2 can be obtained, and the control amount of the pump is fixed to the minimum amount when the remaining time is switched to the final display. The pump is controlled to the minimum amount while the remaining fuel is very low during the final display immediately before running out of fuel. Because it is done, the time until the oil runs out can be kept long, and the usability is greatly improved.

According to an eighth aspect of the present invention, when the oil level in the tank is equal to or less than a predetermined value, the control unit detects the refueling based on a signal from the oil level detecting means, and controls the pump in accordance with the fuel used.
The refueling detection notification means sends a signal to display the remaining time display that is obtained by subtracting a predetermined time from the shortest combustible time of the fuel in the tank, and the final display of the remaining time is the same number or a number other than the previous display. A signal is sent to indicate that the shortest combustible time is less than the remaining time display by other expressions such as a lamp, and when the remaining time is switched to the final display, the pump control amount is minimized. Only when the room temperature set on the operation unit is set to the maximum temperature or when the setting to fix to the maximum combustion is set, the pump control amount is fixed to the maximum amount and the combustion is fixed. When the output of the sensor falls below a predetermined output, the operation is stopped and a signal is sent by the refueling detection notifying means to indicate that the oil has run out.

The same effect as that of claim 7 can be obtained, and the pump can be operated only when the room temperature set by the operation section is set to the maximum temperature or when the setting for fixing the maximum combustion is set. The control amount is fixed to the maximum amount and the operation is stopped when the output of the combustion sensor falls below the predetermined output, and the refueling detection notification means displays the oil shortage. The fuel in the tank can be quickly consumed at the time of cleaning, cleaning, etc., and the cleaning time can be shortened at the time of storing the equipment, and the usability is greatly improved.

According to a ninth aspect of the present invention, the numerical display indicating the operating condition of the burner unit and the numerical display indicating the state after the refueling is detected are displayed on the same display unit, and the operating condition of the burner unit and the like are displayed. And a signal is sent to switch the display color between the numerical display indicating the refueling detection and the display indicating the numerical value.

The same effects as those of the first and second aspects can be obtained, and when the display is switched from the room temperature display to the remaining time display, the user can display the state display such as the operating conditions such as the room temperature display and the remaining time. When the display is displayed on the same display unit, it is difficult for the user to instantly understand and easily misunderstand that the status display and the remaining time display have been switched by a lamp or the like. Since the display colors are switched by the display unit, the user can be instantly and clearly notified, and the usability is improved.

[0039]

Embodiments of the present invention will be described below with reference to the drawings. The same parts as those in the conventional example are denoted by the same reference numerals, and the description thereof will be omitted. Only different parts will be described.

(Embodiment 1) FIG. 1 is a control block diagram of Embodiment 1 of the present invention. FIG. 2 is a flowchart showing a sequence.

In FIG. 1, reference numeral 21 denotes a display unit for displaying a condition such as an operating condition of the burner unit 12 based on a signal from the control unit 17, and the display unit 21 notifies a running out of oil such as a lamp for running out of oil. Means 22 and a refueling detection notifying means 23 for displaying a numerical display indicating a state such as an operating condition of the burner section 12 and a numerical display indicating a state after refueling detection. The display colors are switched between a numerical display indicating the state of the operating conditions and the like and a numerical display indicating the combustible time after refueling is detected as refueling notification means.

In FIG. 2, the control unit 17 detects oil supply when the oil level in the tank 2 is equal to or less than a predetermined value by a signal of the oil level detection means 4 in step 25, and controls the pump 5 in step 27 to use the oil supply. In accordance with the fuel to be supplied, a signal is sent by the refueling detection informing means 23 to display a remaining time display obtained by subtracting a predetermined time from the shortest combustible time of the fuel in the tank 2, and the final display of the remaining time is made in step 28. The same as the immediately preceding display, the out-of-oil notification means 22 using another expression method of flashing a lamp and sounding a buzzer for a predetermined time is displayed to indicate that the time has become less than the remaining time display.

In the present invention, the refueling detection notifying means 23 displays the number display indicating the operating conditions of the normal burner section 12 in green with the above-mentioned structure. Later, the numerical display indicating the combustible time is changed to red, and the displayed combustible time is a remaining time display obtained by subtracting a predetermined time from the shortest combustible time of the fuel in the tank 2 as shown in step 27. Then, as the fuel is burned and the fuel in the tank 2 becomes low, the refueling detection informing means 23 counts down to the final display as the fuel decreases, and the final display is the same as the previous display as in step 28. The shortage of available combustion time is displayed by the out-of-oil notification means 22 using another expression method of flashing a lamp and sounding a buzzer for a predetermined time, and the final display to be "0" is not performed. It is like that.

Here, the display of the remaining time until immediately before the final display of the refueling detection notifying means 23 is longer than the displayed time since the switching, and the final display is shorter than the displayed time since the switching. Since the user can be notified that the combustible time has been shortened, the user has to count down the remaining time so that "0" does not have to be displayed at the end, and it is necessary to switch to the final display and immediately stop the combustion. Disappears.

That is, after the fuel in the tank 2 becomes equal to or less than the predetermined value and refueling is detected, until the final display, the combustible time counts down to the shortest combustible time, during which the combustion amount changes and the combustion amount changes. When there is a state other than the maximum combustion, the remaining fuel corresponding to the combustion time that increases accordingly, and a predetermined amount obtained by subtracting from the shortest combustible time of the fuel in the tank 2 by the refueling detection notifying means 23 after refueling is detected. The amount obtained by adding the remaining fuel corresponding to the time can be consumed during the final display as shown at 29.

Therefore, after the fuel in the tank 2 becomes equal to or less than the predetermined value and refueling is detected, the amount of combustion can be changed by the user, for example, the condition of the use atmosphere changes and the heating load changes. And the remaining combustion time can be set to an optimum time according to the used condition, and the user can be notified of how much fuel is left in the tank 2 without causing confusion to the user. The remaining combustion time is notified by means 23, and the usability is greatly improved.

When the display is switched from the room temperature display to the remaining time display, the user displays the status display such as the operating condition such as the room temperature display and the remaining time display on the same display section. Even if it is displayed that the state display and the remaining time display have been switched in the vicinity, it is difficult to understand instantly and it is easy to misunderstand, but the display color is switched by the same display unit, that is, the refueling detection notification unit 23. , The user can be instantly and clearly notified, and the usability is improved.

(Embodiment 2) FIG. 3 is a flowchart showing the sequence of Embodiment 2 of the present invention.

Referring to FIG. 3, the control unit 17
When the oil level in the tank 2 is equal to or less than a predetermined value according to the signal of the oil level detecting means 4, the refueling is detected, and in step 31, the pump 5 is controlled and the refueling detection informing means 23 is controlled according to the fuel used.
In step 32, a signal is sent to display the remaining time obtained by subtracting a predetermined time from the shortest combustible time of the fuel in the tank 2, and in step 32, the final display of the remaining time is an empty number other than a number. "EM"
A signal is sent to indicate that the combustible time has become extremely short.

When the remaining time is switched to the final display, the control amount of the pump 5 is fixed to the minimum amount in step 34, and when the room temperature set by the operation unit 18 in step 33 is set to the maximum temperature or maximum. Only when the setting to fix the combustion is set, the control amount of the pump 5 is fixed to the maximum amount in step 35, and the remaining time displayed by the refueling detection informing means 23 is switched to the final display. When the output of the combustion sensor falls below the predetermined output at 36, operation is stopped at step 37 and
In FIG. 8, a signal is controlled by the refueling detection notifying means 23 so as to display the running out of oil.

According to the present invention, the same effect as that of the first embodiment can be obtained by the above configuration, and the display of the remaining time immediately before the final display displayed by the refueling detection notifying means 23 is displayed from the time of switching. It is possible to notify the user by displaying the fact that the combustible time has become extremely short, so that the remaining time can be counted down and not displayed as "0" at the end. It becomes better and there is no need to stop burning immediately after switching to the final display.

That is, after the fuel in the tank 2 becomes lower than the predetermined value and refueling is detected, until the final display, the combustible time counts down with the shortest combustible time, during which the combustion amount changes and the combustion amount changes. When there is a state other than the maximum combustion, the remaining fuel corresponding to the combustion time that increases accordingly, and a predetermined amount obtained by subtracting from the shortest combustible time of the fuel in the tank 2 by the refueling detection notifying means 23 after refueling is detected. This is the time consumed during the final display by adding the remaining fuel corresponding to the time.

Therefore, after the fuel in the tank 2 becomes lower than the predetermined value and refueling is detected, the amount of combustion can be changed by the user, such as a change in the condition of the use atmosphere and a change in the heating load. And the remaining combustion time can be set to an optimum time according to the used condition, and the user can be notified of how much fuel is left in the tank 2 without causing confusion to the user. The remaining combustion time is notified by means 23, and the usability is greatly improved.

Further, since the final display of the remaining time is a display other than a numeral, and the fact that the combustible time has become extremely short is displayed, the remaining time immediately before the final display after refueling detection is displayed in time. For example, from a numerical display such as a minute display, the final display is switched to a character display such as "EM" meaning "empty" instead of a numerical display such as time, indicating that the fuel in the tank 2 is extremely low. The user can be clearly informed and the user can be encouraged to refuel, and the usability is greatly improved.

When the remaining time is switched to the final display, the operation is stopped when the output of the combustion sensor falls below a predetermined output, and the refueling detection informing means 23 displays the running out of oil. The fuel is continuously burned until the pump 5 can no longer send fuel due to the lack of oil, so that the burning time after the indication of running out of oil becomes longer, and the time until refueling can be made longer, so that the user's convenience is improved. Further, since the stop of combustion by the abnormal combustion signal from the combustion sensor 13 caused by the pump 5 being unable to send fuel is signaled by the refueling detection informing means 23 as a combustion stop indication of running out of fuel,
False display can be prevented and safety can be ensured.

Further, when the remaining time displayed by the refueling detection notifying means 23 is switched to the final display, the pump 5
The control amount is fixed to the minimum amount, so until the final display, the combustion corresponding to the heating load is counted and the countdown is continued so that the feeling of heating is not impaired, and the final display immediately before the fuel runs out During this period, the amount of control of the pump 5 is fixed to the minimum amount while the amount of remaining fuel is extremely small, so that the time until the oil runs out can be kept long and the usability can be greatly improved.

When the oil runs out, the temperature is often controlled so that the maximum combustion is not achieved, and if the control amount of the pump 5 is fixed to the minimum amount, the fuel in the tank 2 will not be discharged quickly. This is time-consuming and time-consuming when you want to clean up equipment, such as off-season when you want to, or when cleaning. However, the control amount of the pump 5 is fixed to the maximum amount and the combustion sensor 13 is set only when the room temperature set by the operation unit 18 is set to the maximum temperature or when the setting for fixing to the maximum combustion is set.
The operation is stopped when the output of falls below the predetermined output, and the refueling detection notifying means 23 displays an out of oil.
When the fuel in the tank 2 is desirably consumed quickly, the fuel in the tank 2 can be consumed quickly, and when the device is closed or cleaning is quickened, the usability is greatly improved.

(Embodiment 3) FIG. 4 is a flowchart showing the sequence of Embodiment 3 of the present invention. The same parts as those described in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.
Only different parts will be described.

In FIG. 4, the control unit 17
Is detected when the oil level in the tank 2 is equal to or less than a predetermined value according to a signal from the oil level detection means 4, and in step 42, the pump 5 is controlled and the refueling detection notification means 23 is controlled in accordance with the fuel used.
In step 44, a signal is sent to gradually display the remaining time display obtained by subtracting a predetermined time from the shortest combustible time of the fuel in the tank 2. In step 44, the final display of the remaining time is empty other than a numeral. In step 45, the shortage of available combustion time is extremely reduced by the oil-out notification means 22 using another method of flashing a lamp and sounding a buzzer for a predetermined time in step 45. It is configured to send a signal.

Further, the control unit 17 fixes the control amount of the pump 5 at each stage during the display of the remaining time of stepwise switching at step 42 as shown at step 41 and displays the control amount at the refueling detection informing means 23. When the display of the remaining time is switched step by step, as shown in step 40, the buzzer is sounded for a predetermined time.

In the embodiment of the present invention, the remaining combustion time displayed by the refueling detection notifying means 23 after refueling is detected by the above configuration is the remaining time obtained by subtracting a predetermined time from the shortest possible combustion time of the fuel in the tank 2. Since the display is reduced stepwise, for example, at intervals of 10 and is displayed roughly without displaying finely, the user comes to judge as a guideline, and during that time the amount of combustion changes and the state of the combustion other than the maximum combustion is changed. If there is
The user does not feel uncomfortable even when the time between the remaining combustion time and the shortest possible combustion time, which increases accordingly, is displayed in one step.

That is, since the time obtained by adding the above-mentioned increased remaining combustion time and the shortest possible combustion time is displayed and corrected for each stage, the error is reduced, and the user can judge as a guide without any problem. Even if the combustion amount is changed after detection,
Since the combustion time is displayed while correcting for each stage,
The longest remaining combustion time can be displayed without impairing the feeling of heating, and usability is greatly improved.

Further, when the display of the remaining time is switched step by step, it is informed that the change has been made by the oil-out notification means 22 using another expression method such as a lamp. In other words, it clearly informs the user that the time is longer than or equal to the displayed time from the time when the out-of-oil notification means 22 is activated, and alerts the user of remaining combustion time, and refuels the user. It will prompt you each time, greatly improving usability.

Further, since the control amount of the pump 5 at each stage of the display of the remaining time, which is switched stepwise, is fixed, the calculation of the remaining time can be simplified, and the control of the pump 5 is simplified, and the remaining time is simplified. Is also reduced.

In this embodiment, the final display of the remaining time is the same as that of the immediately preceding display, a numerical display indicating the operation condition of the burner unit 12, and the state after the refueling is detected. Although the method of switching the display color of the display to be displayed has been described at the same time, this may be individual, and the final display of the remaining time is a method of displaying other than a number, and burning when the remaining time is switched to the final display. When the output of the sensor 13 falls below a predetermined output, the operation is stopped and the refueling detection informing means 2
Although the method of sending a signal to display the running out of oil has been described at the same time in step 3, the method may be individual. Further, the method of displaying the remaining time stepwise and the method of displaying the remaining time are switched stepwise. At the same time, a method of notifying that switching has been performed by other notification means such as a buzzer, and a method of fixing the control amount of the pump 5 in accordance with each step of displaying the remaining time that is switched stepwise have been described. The components may be individually provided, may be combined in any manner, and the configuration of each unit may be any configuration as long as the object of the present invention is achieved.

[0066]

As described above, according to the first aspect of the present invention,
The display of the remaining time until immediately before the final display shall be longer than the displayed time from the time of switching, and the final display shall be less than the displayed time from the time of switching, indicating that the combustible time has become shorter. , And the remaining time is counted down so that "0" does not have to be displayed at the end, and it is not necessary to switch to the final display and immediately stop the combustion.

In other words, after the fuel in the tank becomes equal to or less than the predetermined value and refueling is detected, until the final display, the combustible time counts down to the shortest combustible time, during which the combustion amount changes and the combustion amount changes. When there is a state other than the maximum combustion, it corresponds to the remaining fuel corresponding to the combustion time that increases accordingly and the predetermined time subtracted from the shortest combustible time of the fuel in the tank by the refueling detection notification means after refueling detection It is time to consume the amount of the remaining fuel added during the final display.

Therefore, after the fuel in the tank becomes lower than the predetermined value and refueling is detected, the amount of combustion can be changed by the user, for example, the condition of the use atmosphere changes and the heating load changes. And the remaining combustion time can be set to an optimal time according to the conditions used, and the user can know how much fuel is left in the tank with the refueling detection notification means without causing confusion to the user. Notifying the remaining combustion time, the usability is greatly improved.

According to the second aspect of the present invention, the same effect as in the first aspect is obtained, and the final display of the remaining time is a display other than a numeral, and the fact that the combustible time is extremely short is displayed. Therefore, the display of the remaining time until immediately before the final display after the detection of refueling is displayed from a numerical display such as a time, for example, a minute display, and the final display is not a numerical display such as a time, but is, for example, “EM” meaning empty. And so on, the user can be clearly notified that the fuel in the tank is extremely low, and the user can be encouraged to refuel, greatly improving the usability. .

According to the third aspect of the invention, the same effects as those of the first or second aspect are obtained, and the remaining combustion time after refueling detection is obtained by subtracting a predetermined time from the shortest possible combustion time of the fuel in the tank. The display of the remaining time is gradually reduced, for example, at intervals of 10 and is roughly displayed without detailed display, so that the user can judge as a guide, during which the amount of combustion changes and the amount of combustion is maximized. If there is a state other than the above, the user does not feel uncomfortable even if the time between the combined remaining combustion time and the shortest possible combustion time is displayed in one step.

That is, since the time obtained by adding the above-mentioned increased remaining combustion time and the shortest possible combustion time is displayed and corrected for each stage, the error is reduced, and the user can determine it as a guide without any problem. Even if the combustion amount is changed after detection,
Since the combustion time is displayed while correcting for each stage,
The longest remaining combustion time can be displayed without impairing the feeling of heating, and usability is greatly improved.

According to the fourth aspect of the invention, the same effect as in the third aspect can be obtained, and when the display of the remaining time is switched stepwise, it is notified that the display is switched by another notification means such as a buzzer. Therefore, it is necessary to clearly inform the user that the time is longer than or equal to the time displayed since the time when the other notification means such as the buzzer is activated, and to call attention to the remaining combustion time. As a result, the user is prompted to refuel each time, and the usability is greatly improved.

According to the fifth aspect of the present invention, the same effect as that of the third aspect is obtained, and the control amount of the pump at each stage of the display of the remaining time which is switched stepwise is fixed. The calculation of time is also simplified, the control of the pump is simplified and the error in the remaining time is reduced.

According to the sixth aspect of the invention, the same effects as those of the first or second aspect are obtained, and the operation is started when the output of the combustion sensor falls below the predetermined output when the remaining time is switched to the final display. Since the stop and the refueling detection notification means indicate that the oil is running out, the fuel continues to burn until the fuel in the tank runs out and the pump can no longer send fuel, so the burning time after displaying the running out of oil is long. Therefore, the time required for refueling can be lengthened, so that the user's convenience is improved. Further, since the stop of combustion due to the abnormal combustion signal from the combustion sensor caused by the pump being unable to send fuel is displayed on the display unit as a combustion stop indication of running out of fuel, an erroneous display can be prevented and safety can be secured.

According to the seventh aspect of the invention, the same effect as in the first or second aspect is obtained, and the control amount of the pump is fixed to the minimum amount when the remaining time is switched to the final display. Until the final display, the combustion that matches the heating load is performed and the countdown is performed so that the feeling of heating is not impaired. Since the control amount is fixed to the minimum amount, the time until the oil runs out can be kept long, and the usability is greatly improved.

According to the eighth aspect of the present invention, the same effects as those of the seventh aspect are obtained, and the setting for fixing the temperature so that the maximum temperature is set when the room temperature set by the operation unit is set or the maximum combustion is set. Only when it is set, the control amount of the pump is fixed to the maximum amount, and when the output of the combustion sensor falls below the predetermined output, the operation is stopped and the refueling detection notification means displays the oil shortage. The fuel in the tank can be quickly consumed when the device is closed or when cleaning is performed, so that the device can be quickly stored or cleaned, and the usability is greatly improved.

According to the ninth aspect of the present invention, the same effects as those of the first and second aspects are obtained, and when the display is switched from the room temperature display to the remaining time display, the user is prompted to read the operating conditions such as the room temperature display. If the status display and the remaining time display are displayed on the same display, the user will not be able to instantly recognize that the status display and the remaining time display have been switched using a lamp, etc. It is easy to
Since the display colors are switched and displayed on the same display unit, it is possible to immediately and clearly notify the user, and the usability is improved.

[Brief description of the drawings]

FIG. 1 is a block diagram of a combustion control device according to a first embodiment of the present invention.

FIG. 2 is a flowchart of the combustion control device.

FIG. 3 is a flowchart of a combustion control device according to a second embodiment of the present invention.

FIG. 4 is a flowchart of a combustion control device according to a third embodiment of the present invention.

FIG. 5 is a block diagram of a petroleum hot air heater using the present invention and a conventional combustion control device.

FIG. 6 is a block diagram showing a conventional combustion control device.

[Explanation of symbols]

 2 Tank 4 Oil level detection means 5 Pump 12 Burner section 13 Combustion sensor 14 Combustion cylinder 15 Blower 16 Duct 17 Control section 18 Operation section 19 Display section 22 Out-of-oil notification means 23 Refueling detection notification means

Claims (9)

[Claims] 1. A tank for storing fuel, an oil level detecting means for detecting an oil level of the fuel in the tank, a pump for sucking and discharging the fuel from the tank, and burning the fuel supplied by the pump. A burner portion, a combustion sensor disposed near the burner portion to detect a combustion state of the burner portion, a combustion tube covering the burner portion and guiding combustion exhaust gas generated in the burner portion upward, and a combustion tube A duct that covers the combustion exhaust gas and the indoor air flow from the blower to generate hot air, an operation unit that sets operating conditions of the pump and the like, and controls operating conditions of a pump and the like according to the setting of the operation unit. A control unit for controlling the combustion of the burner unit, a display unit for displaying the state of the burner unit such as operating conditions based on a signal from the control unit, and a refueling detection (refueling required In The control unit detects a refueling when the oil level in the tank is equal to or less than a predetermined value by a signal of the oil level detecting means, and controls the pump. According to the fuel to be controlled and used, the refueling detection notifying means sends a signal to display the remaining time obtained by subtracting a predetermined time from the shortest combustible time of the fuel in the tank, and the final display of the remaining time is A combustion control device that uses the same number as the immediately preceding display and sends a signal to indicate that the shortest possible combustion time has become less than or equal to the remaining time display in another expression such as a lamp. And a control unit for detecting refueling when the oil level in the tank is equal to or less than a predetermined value based on a signal from the oil level detecting means. A signal is sent so that the remaining time display, which is obtained by subtracting the predetermined time from the shortest combustible time of the fuel in the car, is displayed step by step. The combustion control device according to claim 1, wherein a signal is sent to indicate that the operation has been completed. 3. A control unit detects a refueling when the oil level in the tank is equal to or less than a predetermined value based on a signal of the oil level detecting means, and controls the pump to control the pump to inform the tank based on the fuel to be used. A signal is sent so as to display the remaining time, which is obtained by subtracting a predetermined time from the shortest possible combustion time of the fuel, within the same time, and the final display of the remaining time shall be the same number as the previous display or a display other than the number A signal is sent to indicate that the shortest combustible time has become equal to or less than the remaining time display by another expression method such as a lamp or a lamp.
The combustion control device according to any one of the preceding claims. 4. A control unit detects a refueling when the oil level in the tank is equal to or less than a predetermined value based on a signal of the oil level detecting means, and controls a pump to control the pump to inform the tank based on the fuel to be used. A signal is sent so as to display the remaining time, which is obtained by subtracting a predetermined time from the shortest possible combustion time of the fuel, within the same time, and the final display of the remaining time shall be the same number as the previous display or a display other than the number , A lamp or other expression method is used to indicate that the shortest combustible time has become less than the remaining time display, and that the display of the remaining time has been switched stepwise by other notification means such as a buzzer. The combustion control device according to claim 3, wherein the notification is issued. 5. A control section detects a refueling when the oil level in the tank is equal to or less than a predetermined value based on a signal of the oil level detecting means, and controls a pump to control the pump to inform the tank based on the fuel used. A signal is sent so as to display the remaining time, which is obtained by subtracting a predetermined time from the shortest possible combustion time of the fuel, within the same time, and the final display of the remaining time shall be the same number as the previous display or a display other than the number 4. A method for displaying that the shortest combustible time has become equal to or less than the remaining time display by another expression method, such as a lamp, and fixing the control amount of the pump at each stage of the display of the remaining time that changes stepwise. Combustion control device. 6. A control unit detects a refueling when the oil level in the tank is equal to or less than a predetermined value based on a signal from the oil level detecting means, and controls the pump to control the pump to inform the tank based on the fuel used. A signal is sent to display the remaining time obtained by subtracting the predetermined time from the shortest possible combustion time of the fuel in the same, and the final display of the remaining time shall be the same number as the previous display or a display other than the number, such as a lamp In other expressions, a signal is sent to indicate that the shortest combustible time is less than the remaining time display, and the operation is stopped when the remaining time switches to the final display and the output of the combustion sensor falls below the predetermined output. The combustion control device according to claim 1 or 2, wherein a signal is sent by the refueling detection notifying means so as to indicate running out of oil. 7. A control unit detects a refueling when the oil level in the tank is equal to or less than a predetermined value by a signal of the oil level detecting means, and controls the pump to control the pump to inform the tank based on the fuel to be used. A signal is sent to display the remaining time display after subtracting the predetermined time from the shortest possible combustion time of the fuel in the same, and the final display of the remaining time shall be the same number as the previous display or a non-numeric display, such as a lamp In another expression method, a signal is sent to indicate that the shortest possible combustion time has become equal to or less than the remaining time display, and when the remaining time is switched to the final display, the control amount of the pump is fixed to the minimum amount. The combustion control device according to claim 1 or 2. 8. A control unit detects a refueling when the oil level in the tank is equal to or less than a predetermined value based on a signal of the oil level detecting means, and controls the pump to supply the fuel to the tank by the refueling detection informing means according to the fuel to be used. A signal is sent to display the remaining time, which is obtained by subtracting a predetermined time from the shortest combustible time of the fuel in the tank, and the final display of the remaining time shall be the same number as the previous display or a non-numeric display, such as a lamp In other expressions, send a signal to indicate that the shortest possible combustion time is less than the remaining time display, and when the remaining time is switched to the final display, fix the pump control amount to the minimum amount, Only when the room temperature set by the operation unit is set to the maximum temperature or when the setting for fixing to the maximum combustion is set, the control amount of the pump is fixed to the maximum amount and the combustion sensor Force combustion control apparatus as in claim 7 wherein according to signal to display the oil shortage in the stopped the fuel supply detecting notifying means driving when below a predetermined output. 9. A numerical display indicating a condition such as an operating condition of a burner portion and a numerical display indicating a condition after refueling detection are displayed on the same display portion, and a numerical display indicating a condition such as an operating condition of the burner portion. 3. The combustion control device according to claim 1, wherein a signal is transmitted to switch the display color of a display indicating a state after refueling is detected.