JP3863345B2 - Hot air heater - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a hot air heater that blows out hot air to heat a room.
[0002]
[Prior art]
Conventionally, this type is a timer device for a combustion equipment equipped with a forgetting to turn-off timer means that counts the time from the start of operation and automatically stops the operation when a predetermined time (3 hours) arrives. A plurality of display lamps provided in the operation unit are sequentially turned off with the passage of time to notify the user that the operation is almost stopped (Japanese Patent Publication No. 7-3151), or one display By changing the lamp from a normal lighting display to a blinking display, the remaining time of the forgetting-off timer means is disclosed (Japanese Patent Laid-Open No. 3-63417), or when the remaining fuel is low, the fire is automatically extinguished and the display lamp is turned on. There is a thing (No. 2588169), and there was a thing which tried to inform a user of the operating condition of an apparatus with a display lamp.
[0003]
[Problems to be solved by the invention]
However, in this conventional device, an indicator lamp that indicates the operation status of the device is provided on the operation unit, and this operation unit is covered with a lid to prevent the switch from being easily pressed due to an erroneous operation. In addition to the indicator lamps that indicate the operating status of the equipment, a number of lamps such as timer lamps are also provided, so the indicator lamp that indicates the operating status is the other lamp. It was very inconvenient because it was difficult to confirm due to the display.
[0004]
[Means for Solving the Problems]
The present invention pays attention to this point and solves the above-mentioned drawbacks . In particular, the structure is provided for an operation unit for operating the device, a burner unit for combustion, and heating using the heat generated in the burner unit as hot air. A convection fan and a single indicator that displays the operation status, the time until the timer is extinguished, and the amount of fuel by changing the light emission color, and the indicator is separated from the operation unit substantially at the front center It is provided in the position.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
According to the present invention, the operation unit 2 for operating the device provided on the upper front side of the device main body 1, the burner unit 9 for burning, and the heat generated in the burner unit 9 provided on the back side of the device main body 1 are generated. The convection fan 5 used for heating as warm air lights up in green during operation, flashes in green from a certain time before the automatic extinguishing timer means 34 automatically extinguishes fire after a predetermined time from the start of operation, and the remaining fuel A color indicator 46 (display indicating the operating status) that blinks in red when the amount is less than or equal to a predetermined amount, and the color indicator 46 is independent of the operation unit 2 and the operation unit 2 and the hot air outlet. Since it is provided at the center between the three, this color display 46 can be easily confirmed.
[0008]
【Example】
Next, an embodiment of the present invention will be described with reference to the drawings.
[0009]
Reference numeral 1 denotes a hot air heater body, 2 an operation unit provided at the upper part of the front surface, 3 a hot air outlet to which a louver 4 for guiding the hot air is attached, and 5 a fan guard 7 to the hot air intake 6 on the back surface. A convection fan attached via the airflow, 8 is a blower box for communicating the hot air intake 6 and the hot air blower 3, 9 is a burner part provided with a burner head 10 protruding from the blower box 8, 11 Is a combustion cylinder that surrounds the burner head 10 to form a combustion space, and 12 is a heat shield disposed in the blower box 8 directly above the combustion cylinder 11.
[0010]
The exterior body of the device 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 stand 16.
[0011]
Next, 17 is a cartridge-type tank for supplying liquid fuel such as kerosene, 18 is a fixed tank for temporarily storing fuel from the cartridge-type tank 17, and 19 is when the amount of fuel in the fixed tank 18 falls below a predetermined amount. A float switch 20 that is turned on, an electromagnetic pump 20 that pumps fuel in the fixed tank 18 to the burner unit 9 through an oil feed pipe 21 and an oil feed nozzle 22, and a combustion fan that blows combustion air through a blower pipe 24 It is.
[0012]
Reference numeral 25 denotes a vaporizer that vaporizes liquid fuel, 26 denotes a vaporization heater that heats the vaporizer 25 to a temperature at which the fuel can vaporize, 27 denotes a vaporization temperature sensor that detects the temperature of the vaporizer 25, and 28 denotes a burner head 8. A flame hole network provided on the outer periphery, 29 is a heat recovery ring that recovers combustion heat to the vaporizer 25, 30 is an igniter that sparks and ignites vaporized gas, and 31 is a flame rod that monitors the state of the flame. .
[0013]
Reference numeral 32 denotes a control device that controls the device main body 1 and is configured around a microcomputer (not shown). Reference numeral 33 denotes an operation unit base provided in the operation unit 2, and various switches and display lamps provided in the operation unit 2 are connected to the control device 32 via the operation unit base 33.
[0014]
34 is a forgetting-off timer means for automatically extinguishing fire when a predetermined time (3 hours) has elapsed since the time from the start of operation, and 35 starts operation of the device at a preset timer time. The good morning timer means that the fire extinguishes automatically after one hour). 36 starts counting the number of driving pulses of the electromagnetic pump 20 when the remaining fuel amount becomes a predetermined amount or less, and automatically extinguishes when the counted number of pulses becomes a predetermined value or more. This is a means to extinguish the fuel. The fuel-extinguishing / extinguishing means 36 is configured to automatically extinguish fire after a certain amount of time has elapsed since the remaining fuel amount becomes a predetermined amount or less, or the remaining fuel amount becomes a second predetermined amount or less which is smaller than the predetermined amount. This may be detected by the second float switch and automatically extinguished.
[0015]
The operation unit 2 has an operation switch 37 for instructing operation / stop of the device, an extension switch 38 for resetting the count time of the forgetting-off timer means 34 and starting counting again for a predetermined time (3 hours), A timer switch 39 for operating the good morning timer means 35, an operation lamp 40 provided in the vicinity of the operation switch 37, a timer lamp 41 provided in the vicinity of the timer switch 39, and a numerical display for displaying room temperature and time A unit 42, a fueling character display unit 43 for displaying characters of fueling, and a buzzer 44 that emits a sound when each switch is operated or when some warning is given. The number display unit 42 and the fueling character display unit 43 is provided in the liquid crystal display 45.
[0016]
A color display 46 is provided at the center between the operation unit 2 and the hot air outlet 3 and is lit in a green color with a visually reverse action during operation, and forgets to turn it off. Good morning timer means 35 blinks green for a certain time before automatic fire extinguishment, and when the remaining fuel amount becomes less than a predetermined amount and extinguishes fire by means of out of fuel extinguishing means 36, there is a visual advance action. By turning on and blinking red, which is the advance color, the user is encouraged to refuel with a more visible color.
[0017]
The color display 46 includes a light emitting portion 47 that emits red and green light and a diffusion lens 48 that diffuses the light from the light emitting portion 47 to the surroundings.
[0018]
The light emitting unit 47 is formed by alternately arranging three red LEDs 50 and three green LEDs 51 on the light emitting unit base 49, and the light emitting unit 47 is attached to the front edge of the top plate 14 in the upper space of the blower box 8. The claw part 56 of the board | substrate attachment member 55 which attached the light emission part base | substrate 49 to the hole part 54 of the mounting bracket 53 hanging down from the lower end of the mounting bracket and operation part mounting plate 52 of the front panel 13 was fixed. . The light emitting unit base 49 is connected to the base (not shown) of the control device 32 with a lead wire.
[0019]
The diffusing lens 48 is attached by hooking a locking claw 58 to an opening 57 provided at a position facing the light emitting portion 47 of the front panel 13, and further from the front, both sides, and the upper surface of the device in the attached state. The front side has a substantially hemispherical shape that swells smoothly from the periphery toward the center so that it can be confirmed, and the back surface has a quadrangular pyramid-shaped recess 59 within a range slightly smaller than the periphery. A plurality of prisms are provided, and fine unevenness is provided by graining to form a diffusing surface 60 that diffuses light uniformly to the front side, and dispersed light from the plurality of LEDs of the light emitting unit 47 received on the back side It diffuses substantially uniformly on the hemispherical front side, improves the visibility from the front of the device, and improves the visibility from above and from the side.
[0020]
As described above, the color display 46 is divided into the light emitting unit 47 on the device body 1 side and the diffusing lens 48 on the front panel 13 side, and the space between them is opened. The diffusion lens 48 can be kept low in heat resistance, and the front panel 13 is attached after the lead wire of the light emitting unit 47 is connected to the substrate of the control device 32 during assembly, and then the diffusion lens 48 is attached. Since it can be attached to the front panel 13, the unstable operation of holding the front panel 13 close to the device main body 1 and connecting the lead wires is eliminated, the assembly is easy and the productivity is improved, and the reverse The procedure can also improve the decomposability, thus improving the maintainability.
[0021]
Next, the operation of the present embodiment will be described with reference to the flowcharts of FIGS.
[0022]
First, when the operation switch 37 is pressed (step 1, hereinafter abbreviated as S1), an ON operation confirmation sound “beep” is emitted from the buzzer 44 (S2), and the operation lamp 40 provided in the vicinity of the operation switch 37 blinks slowly. Flashing starts at a cycle (0.5 seconds on / 0.5 seconds off) (S3), energization of the vaporizing heater 26 is started and preheating of the vaporizer 25 is started (S4), and the operation is accepted by a confirmation sound. It can be seen that the carburetor 25 has entered the preheated state by the blinking state of the operation lamp 40.
[0023]
Next, when preheating is completed by detecting the temperature at which the vaporization temperature sensor 27 can be ignited (S5), the green LED 51 of the color display 46 is turned on (S6), and the operation lamp 40 is changed from blinking to lighting ( S7), the combustion fan 23, the electromagnetic pump 20, the igniter 30, and the convection fan 5 are driven to perform an ignition operation (S8). In this way, the color display 46 is lit in a retreat color such as green or blue to indicate that combustion is being performed without being visually noisy.
[0024]
When the operation is started, the forgetting-off timer means 34 is operated to start the operation time counting (S9), and then it is checked whether the float switch 19 is turned on (S10).
[0025]
If the fuel amount has not decreased to the level at which the float switch 19 is turned on in S10, it is checked whether the count time of the forgetting-off timer means 34 has reached 15 minutes before the fire extinguishing time (S11), and 15 minutes of the fire extinguishing time. If it was before, the buzzer 44 generates a notification sound “Peep-Peep” (S12), and the green LED 51 of the color display 46 blinks at a slow blinking cycle (2 seconds on / 1 second off) (S13). ) The characters “OFF” are blinked (0.5 seconds on / 0.5 seconds off) in the segment of the number display section 42 that has displayed the room temperature (S14), and the sound and color display by the buzzer 44 is displayed. The user is surely informed that automatic fire extinguishing is near by the light by 46 and the character display by the number display unit 42.
[0026]
When the count time of the forget-to-extinguish timer means 34 has reached 10 minutes before the fire extinguishing time (S15), the buzzer 44 again generates a notification sound "Spi" (P16), and automatic fire extinguishing is close. To the user.
[0027]
Further, when the count time of the forget-to-extinguish timer means 34 reaches 3 minutes before the fire extinguishing time (S17), the buzzer 44 again generates a notification sound "P-P-P" (S18), and the color display 46 The green LED 51 is changed from a slow flashing cycle to a fast flashing cycle (1 second on / 0.5 seconds off) and flashes (S19), and the remaining time until the automatic fire extinguishing is shortened. Can be informed.
[0028]
Then, when the count time of the forget-to-extinguish timer means 34 counts the fire extinguishing time (S20), the buzzer 44 generates a beeping sound (P21) (S21) to notify that the automatic fire extinguishing is performed. The green LED 51 and the operation lamp 40 of the color display 46 are turned off (S22, S23), the “OFF” character display of the number display unit 42 is changed from the blinking state to the lit state (S24), and the combustion fan 23, The electromagnetic pump 20 and the convection fan 5 are stopped and fire extinguishing operation is performed (S25).
[0029]
When the operation switch 37 is turned off after the fire extinguishing operation is performed (S26), a confirmation sound “pi beep” for the off operation is generated from the buzzer 44 (S27), and the “OFF” character display on the numeric display unit 42 is turned off. The clock is displayed (S28). Since the “OFF” character display is thus continued until the operation switch 37 is turned off, it is possible to know that the operation of the device has been extinguished by the timer means 34 after extinguishing the fire.
[0030]
Next, the case where the remaining fuel amount in the fixed tank 18 is equal to or less than the predetermined amount and the float switch 19 is turned on in S10 will be described. The buzzer 44 generates a beeping sound continuously three times (S29). The green LED 51 of the color display 46 is turned off (S30), and at the same time, the red LED 50 of the color display 46 starts to flash at a slow flashing cycle (2 seconds on / 1 second off) (S31). The flashing display of “Lubrication” (1 second on / 0.5 second off) is started (S32).
[0031]
In this way, the display of the color display 46 is changed from green, which is the reverse color during normal operation, to red, which is the advance color, so that the remaining amount of fuel has been visually displayed more positively and clearly. Further, the sound from the buzzer 44, the light from the color display 46, and the letters “fueling” on the fueling character display 43 are surely informed to the user that automatic fire extinguishing due to running out of fuel is near, and fueling is encouraged.
[0032]
Next, counting of the number of drive pulses of the electromagnetic pump 20 is started (S33), and it is determined whether or not the counted number of pulses is equal to or greater than a predetermined value (S34). The predetermined number of pulses to be counted is set so that the fuel in the fixed tank 18 is not completely emptied, and the combustion can be continued for about 20 minutes with strong combustion and about 40 minutes with weak combustion.
[0033]
When the number of pulses counted here reaches a predetermined value (Yes in S34), the buzzer 44 generates a beeping sound three times in succession (S35) and slows down the red LED 50 of the color display 46. The flashing is changed from the flashing of the cycle to the flashing of the fast cycle (1 second on / 0.5 second off) and starts flashing (S36). (S37), and the user is informed of the fact that automatic fire extinguishing due to running out of fuel will be performed, and then the user stops driving the combustion fan 23, the electromagnetic pump 20, and the convection fan 5. A fire extinguishing operation is then performed (S38).
[0034]
Even after the fire extinguishing operation is performed, until the operation switch 37 is turned off, the red LED 50 and the operation lamp 40 of the color display 46 and the flashing display of the characters “oiling” on the fueling character display unit 43 are continued. Therefore, even after the operation is finished, the red LED 50 of the color display 46 continues to blink rapidly, and even when the user is not near the device main body 1 at the time of fire extinguishing, it is left that the operation has stopped due to running out of fuel. It can be displayed clearly from the position, and it can appeal to the need for refueling, making it easy to use.
[0035]
Next, when the operation switch 37 is turned off (S39), an off operation confirmation sound "beep" is generated (S40), and the red LED 50, the operation lamp 40, and the fueling character display unit 43 of the color display 46 are turned off. (S41, S42, S43) Therefore, when the user is not willing to refuel, the operation can be turned off by turning off the operation switch 37, so that the red LED 50 blinks visually on the color display 46. It can easily cope with a noisy feeling.
[0036]
As described above, the automatic fire extinguishing notice after a predetermined time has elapsed from the start of operation is performed by blinking the color indicator 46 in green (retracted color such as green, blue, etc.), and automatically when the remaining fuel amount is reduced. The fire extinguishment notice flashes the color display 46 in red (advance colors such as red, yellow, etc.) so that it can appeal more visually and attract more attention, so confirm the color of the color display 46 Then, the cause of the automatic fire extinguishing notice can be clearly understood, and the user can take an appropriate action by pressing the extension switch 38 or refueling, which is convenient.
[0037]
In addition, the operation lamp 40 is turned on (flashes) when the operation switch 37 is turned on, and is turned off when the operation switch 37 is turned off. Since the color display 46 to be notified in advance is provided separately, confirmation of the operation of the operation switch 37 can be confirmed by a hand operated with the operation lamp 40 provided in the vicinity of the operation switch 37, and during combustion. The notice that there will be and automatic fire extinguishing can be easily confirmed from a distant place with the color display 46, and the current operating state of the device can be displayed more and clearly, which is very convenient to use. Is.
[0038]
Next, it is conceivable that the fire extinguisher timer means 34 automatically extinguishes fire for about 20 to 40 minutes from when the float switch 19 is turned on until the fire extinguishes. The operation at this time will be described.
[0039]
When the float switch 19 is turned on in S10, the buzzer 44 generates a beeping sound three times in succession (S29), turns off the green LED 51 of the color display 46 that has been on until then (S30), At the same time, the red LED 50 of the color display 46 starts blinking with a slow blinking cycle (2 seconds on / 1 second off) (S31), and the characters “fueling” on the fueling character display 43 blinks (1 second on / 0). .5 seconds off) is started (S32), and the number of driving pulses of the electromagnetic pump 20 is started (S33).
[0040]
Next, it is determined whether or not the counted number of pulses is greater than or equal to a predetermined value, and here it is less than or equal to the predetermined value (No in S34), so check whether the time counted by the forgetting-off timer means 34 is 15 minutes before the extinguishing time (S44).
[0041]
If the count time of the forget-to-extinguish timer means 34 is 15 minutes before the fire extinguishing time (Yes in S44), the buzzer 44 emits a notification sound "P, P, P" (S45), and the color display 46 In the state where the red LED 50 continues to blink slowly without changing the display of “”, the character “OFF” is blinked and displayed on the segment of the number display section 42 displaying the room temperature (S46), and the forgetting to turn off timer means 34 Inform the user that automatic fire fighting is near.
[0042]
Returning to S34 again, the number of pulses has not reached the predetermined value, so the process proceeds to S44, and since S44 is No, the process proceeds to S47. Similarly, it is determined whether the count time of the forgetting to extinguish timer means 34 is 10 minutes before the extinguishing time. To check. When 10 minutes before the fire extinguishing time, the display of the color indicator 46 is not changed as in the case of 15 minutes before, and the buzzer 44 emits a notification sound “Peep-Peep” while the red LED 50 continues to blink slowly. (S48) The user is informed that automatic fire extinguishing by the forgetting to extinguish timer means 34 is near. The same applies 3 minutes before the fire extinguishing time.
[0043]
When the count time of the forget-to-extinguish timer means 34 reaches the fire extinguishing time (S50), the buzzer 44 emits a notification sound “Peep-Peep” (S51), and turns on the red LED 50 and the operation lamp 40 of the color display 46. When the light is turned off (S52, S53), the "OFF" character display on the number display unit 42 is changed from blinking to light (S54), and it is notified that automatic fire extinguishing is performed by the forgetting to turn off timer means 34, the combustion fan 23, electromagnetic The pump 20 and the convection fan 5 are stopped and fire extinguishing operation is performed (S55).
[0044]
When the operation switch 37 is turned off after the fire extinguishing operation is performed (S56), a confirmation sound “pipi” is generated for the off operation (S57), and the “OFF” character display and the fueling character display unit 43 of the number display unit 42 are generated. Is turned off (S58, S59). In this way, the “OFF” character display and the fuel supply character display unit 43 continue until the operation switch 37 is turned off, so that the operation of the device has been extinguished by the timer means 34 and the remaining fuel amount is reduced. You can find out after the fire.
[0045]
When the number of pulses of the electromagnetic pump 20 exceeds a predetermined value after the notification sound is generated by the forget-to-extinguish timer means 34 and before the extinguishing time of the forget-to-extinguish timer means 34 (S44 to S50), In S34, the result is Yes, and the operations in S35 to S43 are performed. The color display 46 blinks in red with a fast blinking cycle so that it can be clearly seen from a remote position that the operation has stopped due to running out of fuel. To do.
[0046]
Further, before the float switch 19 is turned on in S10, the remaining fuel amount is reduced before the extinguishing time of the forgetting-off timer means 34 comes after the notification sound is emitted by the forgetting-off timer means 34 (S11 to S20). When the float switch 19 is turned on (Yes in S10), the process proceeds to S29, where the color indicator 46 blinks with a slow red blinking cycle and the fuel has run out (Yes in S34), or 3 hours have elapsed since the start of operation (in S50). Yes) whichever is earlier, fire extinguishing control is performed.
[0047]
In this way, even if the color display 46 starts blinking in green once, when the remaining fuel amount is low, the color display 46 is changed to red blinking display, and the fire extinguishing notice by the forgetting to extinguish timer means 34 is displayed. Since the fact that the remaining fuel amount has decreased is displayed on the color display 46 with priority, it can be surely known that the remaining fuel amount has decreased.
[0048]
Further, when the fuel is extinguished by the out-of-fuel extinguishing means 36, it will disappear immediately even if the operation is started again if refueling is not performed. Therefore, the color display 46 is advanced even after the fire extinguishes in order to surely notify the necessity of refueling. When the fire is extinguished by the forgotten-off timer means 34, it is visually informed that the fire has been extinguished due to the rapid flashing of the color red, and the operation switch 37 is simply turned on again. The color display 46 is turned off because the operation can be started again and continued without requiring another return operation.
[0049]
Next, when the timer switch 39 is turned on and the good morning timer means 35 is set, the difference from the automatic fire extinguishing by the forgetting-off timer means 35 will be described. From S1 to S9 in FIG. First, when the timer switch 39 is turned on (S60), an on operation confirmation sound “beep” is emitted from the buzzer 44 (S61), and the timer lamp 41 provided in the vicinity of the timer switch 39 is turned on. Lights up (S62).
[0050]
When the timer time is reached (S63), the operation lamp 40 starts blinking at a slow blinking cycle (on for 0.5 seconds / off for 0.5 seconds) (S64), energization of the vaporizing heater 26 is started, and the vaporizer 25 is started. Preheating is started (S65), and when the vaporization temperature sensor 27 detects a temperature at which ignition is possible and preheating is completed (S66), the green LED 51 of the color display 46 is turned on (S67), and the operation lamp 40 starts blinking. The lighting operation is changed (S68), and the combustion fan 23, the electromagnetic pump 20, the igniter 30, and the convection fan 5 are driven to perform an ignition operation (S69).
[0051]
Then, the counting of a one-hour timer (referred to as “forgetting to turn off” for convenience) is started. Thereafter, except for the count time of the forget-to-turn-off timer being 1 hour, it is the same as that after S10 in FIG.
[0052]
The good morning timer means 35 is released when the timer switch 39 is turned off, and is not released when the operation switch 37 is turned off. When the timer time of the next day comes, the steps from S63 are repeated. It is.
[0053]
【The invention's effect】
As described above, according to the present invention, since the indicator that indicates the operation status is provided independently of the operation unit, the indicator can be easily confirmed without being distracted by other display lamps provided in the operation unit. can do. And, since the color of the display form is changed according to the driving situation, the driving situation can be easily and clearly recognized not only by the conventional lighting / flashing display but also by the difference in the color of the display. In addition, if the display is provided at the approximate center of the front surface of the device main body, the visibility is further improved.
[Brief description of the drawings]
FIG. 1 is an external perspective view of a hot air heater according to an embodiment of the present invention.
FIG. 2 is a sectional view of the main body.
FIG. 3 is a cross-sectional view of the combustion system.
FIG. 4 is a front view of the operation unit.
FIG. 5 is a configuration diagram of the control system.
FIG. 6 is a front view of the display base in an attached state.
FIG. 7 is an explanatory diagram of the diffusion lens.
FIG. 8 is a flowchart showing the operation.
FIG. 9 is a flowchart showing the operation.
FIG. 10 is a flowchart showing the operation.
[Explanation of symbols]
2 Operation section 5 Convection fan 9 Burner section 46 Color display (display)

Claims (1)

The operation part for operating the equipment, the burner part for combustion, the convection fan that uses the heat generated in the burner part as heating air for heating, the operating status, the time until the timer is extinguished, and the amount of fuel to be changed and a single display for displaying Te, warm-air heating apparatus, characterized in that the indicator is provided to separate away instrument front panel substantially central position between the operating unit.

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