JP3963797B2 - Display device for liquid fuel combustion system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a display device for a liquid fuel combustion apparatus for burning liquid fuel such as kerosene.
[0002]
[Prior art]
In this type of liquid fuel combustion device, the residual oil of the fuel is detected and displayed by various methods. For example, detection of the amount of residual oil is mainly performed using float buoyancy, and the amount of generated heat is calculated and displayed by combining this float and a proximity switch, and is described in Japanese Utility Model Registration No. 2588169. Thus, when the remaining fuel is low, the display lamp is automatically extinguished and the display lamp is turned on, or the display section lamp is turned off based on the value detected by the weight sensor as described in Japanese Patent Publication No. 7-122495. Lastly, the fuel lamp is turned on, and further, as described in Japanese Patent No. 3136719, the residual oil in the fuel tank is detected by a pressure sensor. There are those that are turned on and those that inform the front panel display of a fire extinguishing notice due to running out of fuel, as described in JP-A-2001-336744. That.
[0003]
As for turning off the display, as described in Japanese Patent Application Laid-Open No. 2001-41581, the brightness of the display unit is automatically switched according to the operation status of the device, or As described in Japanese Patent No. 12746, there is one in which the luminance of the display unit can be changed by a switch operation.
[0004]
[Problems to be solved by the invention]
By the way, in the conventional liquid fuel combustion apparatus, the operation part is on the upper surface, and the fuel remaining amount display part is arranged on the front surface of the device main body to improve the visibility, but the fuel remaining amount display is small and visually recognized. Problems such as poor performance and the remaining amount of fuel display on the front, so it lights / flashes during the timer count (usually sleeping), and the light of the LED lamp (especially when flashing) disturbs the sleep There was a problem of becoming.
[0005]
SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a display device for a liquid fuel combustion apparatus that can improve the visibility and usability of a notification means.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, according to the present invention, an oil amount display unit comprising a plurality of lamps disposed on the front surface of the main body and displaying light emission according to the remaining amount of fuel, and the main body upper surface separately from the oil amount display unit An operation display unit comprising an operation switch and a display unit for displaying an operation state, and a timer lamp for displaying the operation of the timer on the operation display unit, and when the setting of the timer is completed, the operation display unit The operation lamp is turned off and the timer lamp is turned on, the oil quantity lamp in the oil quantity display section is turned on, is turned off after a predetermined time, and only the timer lamp in the operation display section is continuously turned on . According to this configuration, the oil level display is turned off while the timer is operating, so you can go to bed without worrying about the brightness when using the device in a sleeping place such as a bedroom, which greatly improves your convenience. be able to.
[0007]
In particular, when the oil amount display unit is composed of a plurality of lamps that emit light according to the amount of remaining oil, it is more effective if all the lamps of the oil amount display unit are turned off during the timer operation. .
[0008]
Here, the operation of the timer includes both the operation of the turn-off timer and the operation of the on-timer. For example, when the off timer is set at bedtime or the like, the operation is in progress, and when the on timer is set at bedtime or the like, the operation is in progress.
[0009]
In addition, when an operation display unit including an operation switch and a display unit for displaying an operation state is provided on the upper surface of the main body separately from the oil amount display unit, the operation display unit (especially a timer lamp) ) Is lit, the user can check the operation status and the usability is improved.
[0010]
Here, the operation switch refers to a switch such as an operation switch or a timer switch, and the display unit refers to a single liquid crystal display or a display lamp or a set of display lamps that display an operation status excluding the oil amount display. If these operation display parts are arranged on the upper surface of the main body that does not disturb the user's sleep at the time of going to sleep, separately from the oil amount display part, the driving operation can be confirmed and the usability is improved. Even in that case, in the operation display section, the timer lamp can be turned on, and other displays (for example, liquid crystal display) can be turned off.
[0011]
Further, in the present invention, an oil amount display unit that displays the residual oil status of the fuel by light emission is provided, and the oil amount display unit includes a plurality of lamps that display according to the residual oil amount, It is characterized by notifying with the lamp.
[0012]
According to this configuration, since the lighting state of the lamp changes step by step according to the amount of remaining oil by a plurality of lamps, it becomes easy to grasp the amount of remaining oil, and since all lamps notify at the time of fueling notice, Compared with, the appeal power to inform the user of refueling is greatly improved.
[0013]
In this case, it is more effective if the oil amount display part is arranged on the front face of the main body to make it easy to visually recognize and the lamp notification at the time of refueling notice is performed by blinking. Here, the time of fueling notice refers to a state where the fuel has run out, but it may include a state where the fuel is almost exhausted.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a front perspective view of a liquid fuel combustion apparatus according to an embodiment of the present invention, and FIG. 2 is a rear perspective view of the same. In the figure, 1 is an apparatus main body, 2 is a hot air outlet to which a louver for guiding hot air is attached, 3 is an operation display section arranged on the front side of the upper surface of the main body, and 4 is arranged in the center of the front surface of the main body. Oil quantity display section, 5 is an oil tank having a main body lid, 6 is a convection fan attached to a hot air inlet 7 on the back via a fan guard 8, 9 is a thermistor for detecting a room temperature, and 10 is a handle of the oil tank. , 11 is an oil meter for the oil tank.
[0015]
The exterior body of the apparatus main body 1 is configured by fixing a front panel 13 covering the front surface, an upper surface plate 14 covering the upper surface, and a rear surface plate 15 covering the side surfaces and the rear surface on a placing table 16.
[0016]
The oil amount display unit 4 has a display sheet 17 for picture display and light source display attached to a substantially central part of the front plate 13, and a plurality of LED lamps 18 (see FIG. 7) on the apparatus main body side on the back surface of the display sheet 17. ) Is passed through, and the light from the LED lamp is diffused from three light source windows in each of the top, bottom, left and right (a total of nine) to display in red.
[0017]
FIG. 3 is a schematic view of the fuel path. In FIG. 3, 5 is a fuel tank that can be removed from the main body, 21 is an electromagnetic pump that sends fuel from the fuel tank, 22 is a vaporizer that heats the fuel from the electromagnetic pump into vaporized gas, and 23 is vaporized gas from the vaporizer. Is a burner that jets from the nozzle, mixes with combustion air, and burns. Reference numeral 24 denotes a first (oil feeding side) connecting means for connecting the fuel tank and the combustion section when the fuel tank is mounted on the main body. From the tank side connection joint 24a and the connection joint receiver 24b on the combustion section side. Composed. Reference numeral 25 denotes a second (return oil side) connecting means for connecting the oil tank and the vaporizer and returning the unburned gas to the oil tank 5 when the oil tank is attached to the main body, and the tank side connection joint 25a. And a connection joint receiver 25b on the combustion part side.
[0018]
The oil supply side connecting means 24 is provided with an air valve 26 for sending air into the path. Further, a pipe 27 is provided between the first connecting means 24 and the electromagnetic pump 21 of the fuel tank 5, a pipe 28 is provided between the electromagnetic pump 21 and the vaporizer 22, and a return oil is provided between the vaporizer 22 and the second connecting means 25. They are connected by a pipe 29.
[0019]
In the fuel path, the fuel in the fuel tank 5 is sent to the carburetor 22 by the electromagnetic pump 21, and the fuel becomes a gas from the liquid inside the carburetor heated by the carburetor heater (not shown). 22 is sent to the burner 23 and burned by the burner 23.
[0020]
An oil amount detection means 30 for detecting the amount of fuel in the tank 5 is provided on the bottom surface side of the fuel supply tank 5. As shown in FIG. 3, the oil amount detection means 30 is turned ON / OFF in accordance with the approach / separation operation of the magnet 30a and the float 30b that is disposed inside the tank 5 and that functions as a detected part. And a reed switch 30d installed on the detection die 30c side below the tank so as to face the float 30b. The float 30b is housed in a permeable cylindrical guide 30e with a canopy in a state where the magnet 30a is arranged on the lower side so as to be movable up and down in accordance with the fuel level fluctuation.
[0021]
When the fuel inside the fuel tank 5 decreases and the oil level detection means 30 reaches a certain liquid level, the reed switch 30d senses and operates by the magnet 30a of the float 30b. It is possible to inform the feed and oil amount display section 4 of out of fuel or the like.
[0022]
4 is a schematic diagram of the operation display unit, and FIG. 5 is an enlarged view of the liquid crystal display unit. As shown in the figure, the operation display unit 3 is provided with a liquid crystal display unit 32 for displaying temperature, ventilation and the like, and various setting buttons (switches) 33 to 38. As shown in FIG. 7, the liquid crystal display unit 32 digitally displays room temperature display, remaining oil supply time, current time, and the like. As the various setting buttons (switches), an operation on / off button (switch) 33, a three-hour extension button 34, a temperature / timer setting button 35, a timer button 36, a selection button 37, and a setting / release button 38 are arranged. On the upper side of the operation on / off button 33, the 3-hour extension button 34, and the timer button 36, lamps 39, 40, and 41 for displaying the operation state are provided.
[0023]
The operation button 33 is a button to be pressed when ignition or extinguishing. The operation lamp 39 is lit during operation and blinks when an abnormality occurs and the fire is extinguished. The 3 hour extension button 34 is a button for continuing the operation for 3 hours when pressed to extend the operation.
[0024]
The extension lamp 40 is turned on when the remaining time is within one hour, and further blinks within 15 minutes or during automatic fire extinguishing. The temperature / timer setting button 34 is a button for raising and lowering the temperature and for returning and advancing the clock and timer time settings when setting the temperature.
[0025]
When the timer button 36 is kept pressed for 1 second or longer, the timer operation is started. The display lamp 41 on the upper side of the timer button 36 is lit during the timer operation and blinks when the timer operation is finished.
[0026]
Each time the selection button 37 is pressed, the function selection is made in the order of “energy saving” → “small room” → “child lock” → “fast warm” → “speed ignition” → “care” (cleaning operation) → “energy saving”. Can be repeated. The setting / cancellation button 38 is a switch for determining / releasing the function selected by the selection button 37.
[0027]
FIG. 6 is a configuration diagram of a control circuit that controls various operation modes by signals from the various setting buttons 33 to 38 and the oil amount detection means 30. In FIG. 6, components not directly related to the present invention are not shown.
[0028]
The control unit 50 is configured by a general microcomputer, and includes a CPU, a ROM, and a RAM. The oil amount detection means 30 and various setting buttons (switches) 33 to 38 are connected to the input side. The electromagnetic pump 21 is connected via a pump drive circuit 52, the convection fan 6 is connected via a motor drive circuit 53, and the solenoid valve opens and closes the nozzles of the air valve 26 and the carburetor 22 via a valve drive circuit 54. 55 is connected. A burner ignition heater 57 and a carburetor heater 58 are connected via a heater drive circuit 56.
[0029]
Furthermore, display units such as the operation display unit 3 (including lamp display) and the oil amount display unit 4 are connected to the output side of the control unit 50 via a display drive circuit 59. In addition, a timer means 60 is connected to the control unit 50 so that it can measure time such as timer operation.
[0030]
Based on the input signal, the control unit 50 controls the drive circuits 52 to 54, 56, and 57 to control the electromagnetic pump 21, the operation display unit 3, and the oil amount display unit 4 as follows.
[0031]
FIG. 7 is a diagram showing display states of the operation display unit 3 and the oil amount display unit 4. In the liquid fuel combustion apparatus, when the fuel tank 5 replenished with fuel is attached to the apparatus body and then the operation button 33 is pressed, the carburetor heater is heated and the temperature of the carburetor 22 rises, and is sent from the fuel tank 5. The fuel that has been vaporized is sent to the burner 23 and combusted, and hot air is blown into the room from the hot air outlet 2 by the rotational drive of the convection fan 6.
[0032]
At this time, all of the operation lamp 39 and the lamp of the oil amount display unit 4 are lit, and the digital display indicates the indoor temperature. If the operation is continued as it is, the fuel in the fuel tank 5 decreases, and when the oil amount detection means 30 detects this state, the middle and lower lamps of the operation lamp 39 and the lamp 18 of the oil amount display unit 4 are displayed. Turns on and the upper lamp goes off, and the digital display shows the room temperature.
[0033]
Furthermore, when the operation is continued and the fuel in the fuel tank 5 decreases, only the operation lamp 39 and the lower lamp among the plurality of lamps 18 of the oil amount display unit 4 are turned on, the upper and middle lamps are turned off, and the digital display Displays “refueling” and “remaining time 1:00” to prompt the user to refuel.
[0034]
Furthermore, when the operation is continued and the fuel in the fuel tank 5 runs out, the operation lamp 39 and all of the plurality of lamps 18 of the oil amount display section 4 blink, and the digital display changes from “refueling” and “room temperature” to “current "Time" is displayed.
[0035]
As described above, the oil amount lamp 18 of the oil amount display unit 4 is used as a means for informing that the oil amount lamp 18 of the oil amount display unit 4 on the front plate is linked with the residual oil amount of the oil supply tank 5 and finally the fuel is exhausted. By flashing all of the above, the appeal of notifying the user of refueling is greatly improved compared to the conventional case.
[0036]
When the on-timer operation is performed, the operation button 33 is pressed, the timer button 36 is further pressed for 1 second or longer, and the operation start time is set by the setting button 35. When such an operation is performed, the operation lamp 39 of the operation display unit 3 is turned off and the timer lamp 41 is turned on. At this time, the oil amount lamp 18 of the oil amount display unit 4 is turned on, but is turned off after a predetermined time (about 8 seconds), and only the timer lamp 41 of the operation unit 3 is kept on. When the set time is reached, timer operation is started.
[0037]
When the timer operation is started, the oil amount lamp 18 of the oil amount display unit 4 is turned on for a certain time and then turned off. Further, the oil amount lamp 18 of the oil amount display unit 4 may be turned on before the timer operation is completed.
[0038]
As described above, the oil amount lamp of the oil amount display section 4 on the front panel temporarily displays when the timer is operated, but then turns off, so that it is bright when using the device in a sleeping place such as a bedroom. It is possible to go to bed without worrying about this, and the usability can be greatly improved.
[0039]
In this embodiment, it is not necessary to set a turn-off timer because the fire button automatically turns off after a predetermined time elapses after the operation button 33 is turned ON or after a predetermined time elapses after the 3-hour extension button 34 is turned ON. When the off timer function is provided and set, the oil amount lamp 18 of the oil amount display unit 4 may be turned off and only the timer lamp 41 of the operation unit 3 may be turned on while the timer is operating.
[0040]
In addition, the oil amount display function is not limited to the lamp display, and a voice notification function for notifying by a chime or the like, for example, when the remaining amount is low can be added according to the oil amount state. In this case, if the voice notification function is not operated while the timer is operating, it does not interfere with bedtime and the usability is improved.
[0041]
【The invention's effect】
As is clear from the above description, according to the present invention, the oil amount lamp of the oil amount display portion is turned off when the timer is operated, so that the brightness when using the device in the sleeping place is not concerned. It is possible to go to bed, and the usability can be greatly improved.
[0042]
In addition, since all lamps are informed at the time of refueling notice, the appealing power to inform the user of refueling is greatly improved as compared with the conventional case.
[Brief description of the drawings]
1 is a front perspective view of a liquid fuel combustion apparatus according to an embodiment of the present invention. FIG. 2 is a rear perspective view of FIG. 1. FIG. 3 is a schematic view of a fuel path in FIG. Fig. 5 is a schematic diagram of the operation display unit of Fig. 5. Fig. 5 is an enlarged view of the liquid crystal display unit of Fig. 4. Fig. 6 is a block diagram of a control unit for controlling various operation modes of Fig. 1. Fig. 7 Figure showing the display status [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Apparatus body 2 Hot air outlet 3 Operation display part 4 Oil quantity display part 5 Oil supply tank 6 Convection fan 7 Hot air inlet 9 Thermistor 10 for detecting room temperature Handle 11 Oil amount meter 12 Plug 13 Front panel 14 Top plate 15 Back Face plate 16 Stand 21 Electromagnetic pump 22 Vaporizer 23 Burner 24 1st connection means 25 2nd connection means 30 Oil amount detection means 32 Liquid crystal display part 33 Operation button 34 3-hour extension button 35 Temperature / timer setting button 36 Timer button 37 selection button 38 setting / cancellation button 50 control unit

Claims (3)

An oil amount display unit that is arranged on the front of the main unit and displays a number of lamps that emit light according to the amount of remaining oil in the fuel, and is arranged on the upper surface of the main unit separately from the oil amount display unit to display operation switches and operating status An operation display unit composed of a display unit to perform, and a timer lamp for displaying the operation of the timer on the operation display unit,
When the setting of the timer is completed, the operation lamp of the operation display unit is turned off and the timer lamp is turned on, the oil amount lamp of the oil amount display unit is turned on, and is turned off after a predetermined time, and the timer lamp of the operation display unit is turned on. A display device for a liquid fuel combustion apparatus, characterized in that only the light continues to be lit.   2. The display device for a liquid fuel combustion apparatus according to claim 1, wherein at the start of the timer operation, an oil amount lamp of the oil amount display unit is turned on for a predetermined time and then turned off.   3. The display device for a liquid fuel combustion apparatus according to claim 1, wherein an oil amount lamp of the oil amount display unit is lit before completion of the timer operation.

Images