JP5808652B2 - Liquid fuel combustion equipment - Google Patents

Description

  The present invention relates to a liquid fuel combustion apparatus used for a heater.

Conventionally, in this type, in order to notify the refueling of the cartridge tank with good timing, for example, when the remaining amount of fuel becomes below a predetermined value, the refueling lamp blinks sequentially with time.
(For example, refer to Patent Document 1.)

It also recognizes the initial value of the fuel in the cartridge tank, subtracts the amount of fuel used from it, calculates the remaining amount of fuel in the cartridge tank, and displays the remaining amount of fuel and the remaining operable time on the display unit. There was a thing.
(For example, see Patent Document 2.)

JP 09-318059 A JP 2001-349532 A

  By the way, in this prior art, in Patent Document 1, when the oil level detecting means for detecting the amount of fuel in the main body tank in the liquid fuel combustion apparatus detects that the remaining amount of fuel is below a predetermined level, the fueling lamp blinks. The fuel in the main body tank can continue to burn for about 15-20 minutes, but the operation can be started by operating the operation switch of the liquid fuel combustion device with almost no fuel in the cartridge tank. When the operation part of the liquid fuel combustion device is operated when there is almost no fuel in the cartridge tank, it is not known that the fuel in the cartridge tank will be exhausted soon, and the fuel in the main body tank will be exhausted 15 to 20 minutes after that. Therefore, the user must go to the liquid fuel combustion device again to refuel the cartridge tank. There was no.

  Also in Patent Document 2, the remaining amount of fuel in the cartridge tank and the remaining operable time are displayed on the display unit, but this is also not understood unless the user goes to the liquid fuel combustion device and looks at the display unit. If the user goes to the liquid fuel combustion device and does not look at the display unit, after the fuel in the cartridge tank is exhausted, the fuel in the main body tank is exhausted, and the user is informed of the refueling. It was necessary to go to the fuel combustion device and refuel the cartridge tank.

  The present invention has been made in order to solve the above-described problems. In order to start the operation, the user operates the operation switch to go to the liquid fuel combustion apparatus, or sets the temperature during operation. If the remaining amount of fuel is low when you go to the liquid fuel combustion device to operate the operation switch to change the operation or stop the operation, the user will inform you that the remaining amount of fuel is low, and the user will again burn the liquid fuel for refueling It is an object of the present invention to provide an easy-to-use liquid fuel combustion apparatus that does not need to go to the apparatus.

In order to solve the above-mentioned problem, in claim 1 of the present invention, a main body tank provided in the apparatus main body, an oil level detecting means for detecting a remaining fuel level in the main body tank, a burner portion, An electromagnetic pump that pumps up the fuel in the main body tank and supplies it to the burner unit, a cartridge tank that supplies fuel into the main body tank, a cartridge tank detection means that detects whether the cartridge tank is inserted in the main body, and an operation An operation unit including a switch, a room temperature setting switch, and the like, a display unit, a notification unit, and a control unit for controlling operation, the control unit calculates a current remaining fuel amount less than a predetermined remaining amount. In the liquid fuel combustion apparatus for notifying the fact that the remaining amount of fuel is low when any switch of the operation unit is operated, the control unit calculates the current fuel calculated If any of the switches on the operation unit is operated when the oil level detection means detects that the oil level of kerosene in the main body tank has continued to decrease for a predetermined time when the remaining amount is greater than or equal to the predetermined amount The notification means notifies that the remaining amount of fuel is low.

  According to a second aspect of the present invention, when the cartridge tank detecting means detects that the cartridge tank has been removed from the main body, the control unit sets the remaining amount of fuel to an initial value, and starts operation from the remaining amount of fuel. The present fuel remaining amount is calculated by subtracting the amount of fuel consumption.

  According to a third aspect of the present invention, the initial value of the remaining amount of fuel is the capacity of the cartridge tank.

According to the first aspect of the present invention, when the calculated current remaining fuel amount is less than the predetermined remaining amount, the notification means notifies that the remaining amount of fuel is low when any switch of the operation unit is operated. Since the notification is made, when the user operates any switch of the operation unit and approaches the liquid fuel combustion device, it is possible to supply the fuel that is little remaining, so that the fuel is informed that the fuel has run out. Sometimes it is possible to improve the ease of use by reducing the need to refuel and sometimes refuel , and when the calculated remaining amount of fuel is greater than or equal to the predetermined remaining amount, the oil level detecting means When it is detected that the oil level of kerosene in the main body tank has continuously decreased for a predetermined time, if any switch of the operation unit is operated, the notification means will notify that the remaining amount of fuel is low. , Full Even when the cartridge tank is inserted into the liquid fuel combustion device without refueling the kerosene, the kerosene oil level in the main body tank is reduced after the oil level height in the main body tank has continuously decreased for a predetermined time. When the user approaches any of the switches on the operation unit and approaches the liquid fuel combustion device until the operation is automatically terminated after the refueling level falls below the refueling level, the remaining amount becomes low. Fuel can be refueled.

  According to claim 2, when the cartridge tank detecting means detects that the cartridge tank is taken out from the main body, the remaining amount of fuel is set to an initial value, and the fuel consumption after the start of operation is determined from the remaining amount of fuel. Since the present fuel remaining amount is calculated by subtracting the amount, weight detection means such as a weight sensor for detecting the weight of the cartridge tank inserted into the apparatus main body after the cartridge tank is taken out from the main body is provided. It becomes unnecessary, and when the user approaches any liquid fuel combustion device by operating any switch on the operation unit without increasing the number of parts, it is possible to refuel with a small amount of fuel, and there is no fuel. Thus, it is possible to save the trouble of refueling when notified of refueling, and to improve usability.

  Further, according to claim 3, since the initial value of the remaining amount of fuel is the capacity of the cartridge tank, the cartridge tank is inserted into the apparatus main body after the cartridge tank is filled as normal fuel supply. The remaining amount of fuel can be calculated without weight detection means such as a weight sensor that detects the weight of the cartridge tank. The user can operate any switch on the operation unit without increasing the number of parts. When approaching the fuel combustion device, it is possible to refuel the fuel that is little remaining, and it is possible to save the trouble of refueling when the fuel is exhausted and the refueling is notified, and the usability can be improved. .

Schematic of a liquid fuel combustion apparatus showing an embodiment of the present invention Configuration diagram Flowchart diagram of the same low remaining amount notification control

Next, an embodiment of a liquid fuel combustion apparatus to which the present invention is applied will be described with reference to the drawings.
1 is a main body tank for storing a certain amount of kerosene as liquid fuel, 2 is an oil level detection means for detecting the remaining level of kerosene in the main body tank 1, and the float 3 follows oil level fluctuations in the main body tank 1. By responding up and down, the oil level of the kerosene in the main body tank 1 is detected and the remaining amount level is detected.

4 is a cartridge tank for supplying kerosene to the main body tank 1, 5 is an electromagnetic pump for pumping kerosene in the main body tank 1, 6 is an oil feed pipe, 7 is a burner section containing a heater 8, and 9 is a temperature of the burner section 7. Burner temperature detecting means 10 for detecting is a blower for sending primary air and secondary air for combustion.
Kerosene supplied from the main body tank 1 through the oil feed pipe 6 enters the burner section 7 which has been kept at a high temperature in advance, and is vaporized and mixed with the primary air from the blower 10 to become an air-fuel mixture.

  11 is an ignition means for igniting this vaporized gas, 12 is a burner head that forms a flame, 13 is a combustion cylinder, 14 is a flame detection means that detects the flame formed by the burner head 12, and 15 is a cartridge tank 4 Cartridge tank detecting means for detecting whether it is inserted in the body, 16 is a room temperature detecting means for detecting the room temperature, 17 is an operation section provided with an operation switch, a room temperature setting switch, and the like, and 18 is a display section for displaying with a liquid crystal or the like , 19 is an informing means for informing by a buzzer sound or voice, and 20 is a control unit constituted by a microcomputer.

Next, the operation will be described with reference to the flowchart of FIG.
First, the control unit 20 checks whether the power plug of the liquid fuel combustion apparatus is inserted into an outlet and the power supply is connected to the liquid fuel combustion apparatus (S1), and the power supply is connected to the liquid fuel combustion apparatus. When the operation switch is turned on in the state (S2), it is confirmed whether the cartridge tank 4 is inserted in the liquid fuel combustion apparatus based on the detection value of the cartridge tank detection means 15. (S3)

  If the cartridge tank 4 is not inserted into the liquid fuel combustion apparatus in (S3), the control unit 20 notifies the display unit 18 and the notification means 19 that there is no cartridge tank (S4), and sets the low remaining amount notification mode. It is turned off (S5), the stored fuel remaining amount is set to the initial value which is the cartridge tank capacity (S6), the fire is extinguished (S19), and the operation is advanced to S20.

  If the cartridge tank 4 is inserted in the liquid fuel combustion apparatus in (S3), then the control unit 20 needs to supply the oil level of the kerosene in the main body tank 1 by the oil level detecting means 2. (S7), it is determined that there is no fuel when the oil level of the kerosene in the main body tank 1 is less than the fueling height, and the control unit 20 displays the display unit 18 and the notification means. 19 is used to notify that the fuel is supplied without fuel (S18), and thereafter, the process proceeds to (S19).

  When the oil level of the kerosene in the main body tank 1 is higher than the required oil level in (S7), it is determined that there is fuel, and the heater 8 of the burner unit 7 is energized to turn on the temperature of the burner unit 7. When the temperature of the burner unit 7 reaches a predetermined temperature, the kerosene in the main body tank 1 is supplied to the burner unit 7 by the electromagnetic pump 5 and the primary air and secondary air for combustion are blown by the blower 10. The place where the air-fuel mixture that has been fed and mixed in the burner section 7 is ejected from the burner head 12 is ignited and burned by the ignition means 11, and the operation is started. (S8)

  After the operation is started, the controller 20 confirms whether the cartridge tank 4 is inserted in the liquid fuel combustion device based on the detection value of the cartridge tank detection means 15 during operation (S9), and the cartridge tank is inserted in the liquid fuel combustion device. If it is confirmed that the cartridge 4 is not inserted, it is determined that the cartridge tank 4 has been taken out suddenly during operation, and the process proceeds to (S4).

  If the cartridge tank 4 is inserted in the liquid fuel combustion apparatus in (S9), then the control unit 20 calculates the fuel consumption per second at the combustion level after the start of operation (S10). The current cumulative consumed amount is calculated by adding to the stored cumulative consumed amount (S11), and the current cumulative consumed amount calculated in (S11) from the remaining amount of fuel whose initial value is the cartridge tank capacity. The present fuel remaining amount is calculated by subtracting the combustion amount. (S12)

  Then, the control unit 20 compares the predetermined remaining amount set in advance, for example, the amount that the remaining amount of fuel in the cartridge tank 4 becomes 1 liter with the current remaining fuel amount calculated in (S12) (S13). When the current remaining fuel amount calculated in (S12) becomes less than the predetermined remaining amount, the control unit 20 turns on the low remaining amount notification mode (S14) and any one of the switches of the operation unit 17 is operated. (S15), “Not enough kerosene remaining” is notified by the notification means 19 of the low fuel amount. (S16)

  As a result, when the user approaches any liquid fuel combustion device and operates any switch of the operation unit 17 in an attempt to operate something, the user notifies any small amount of fuel so that the user can switch any switch of the operation unit 17. When operating and approaching the liquid fuel combustion device, it is possible to refuel the small amount of fuel.Therefore, when the fuel is exhausted and the refueling notification is given, the trouble of refueling again when approaching the liquid fuel combustion device is reduced. It saves and improves usability.

  Then, after notifying the small amount of fuel in (S16) and when any switch of the operation unit 17 is not operated in (S15), the control unit 20 uses the oil level detection means 2 to detect the kerosene in the main body tank 1. It is confirmed whether the oil level is higher than the required oil level (S17). When the oil level of the kerosene in the main body tank 1 is less than the oil level, it is determined that there is no fuel, and the control unit 20, the display unit 18 and the notification unit 19 notify the fuel supply so that there is no fuel (S18), and the electromagnetic pump 5 and the blower 10 are stopped and extinguished (S19), and the operation is finished (S20). , (S1).

  When the oil level of the kerosene in the main body tank 1 is higher than the required oil level in (S17), it is determined that there is fuel, and then it is confirmed whether the operation switch is turned off (S21). If the operation switch is not turned off, the process returns to (S9), and if the operation switch is turned off, the process proceeds to (S19).

  When the current remaining fuel amount is equal to or greater than the predetermined remaining amount in (S13), the control unit 20 determines whether the oil level height of the kerosene in the main body tank 1 has continuously decreased for a predetermined time by the oil level detecting means 2. Confirmation (S22), if the oil level height continues to decrease for a predetermined time, the process proceeds to (S14), and if the oil level height does not decrease for a predetermined time, the process proceeds to (S17).

  As a result, when the cartridge tank 4 is filled, for example, when the cartridge tank 4 is inserted into the liquid fuel combustion apparatus by filling about half of the fuel without filling up the full tank, the control unit 20 increases the initial value of the remaining amount of fuel. Since the cartridge tank capacity is set, the actual fuel remaining amount is always smaller than the calculated current fuel remaining amount, and the calculated current fuel remaining amount is less than the preset predetermined remaining amount. The actual fuel remaining amount becomes less than the predetermined remaining amount, and eventually the fuel level of the kerosene in the main body tank 1 becomes lower than the refueling level before the low remaining amount notification mode is turned on. Operation ends automatically.

  Therefore, even when the calculated current fuel remaining amount is greater than or equal to a predetermined remaining amount set in advance, when the oil level height of kerosene in the main body tank 1 continuously decreases for a predetermined time by the oil level detecting means 2, Since it is determined that the inside of the cartridge tank 4 is empty and the low remaining amount notification mode is turned on, the kerosene in the main body tank 1 starts when the oil level of the kerosene in the main body tank 1 continuously decreases for a predetermined time. When the user approaches the liquid fuel combustion device by operating any switch of the operation unit 17 until the oil level is less than the fuel supply height and the fuel supply is notified and the operation is automatically terminated, The notification means 19 notifies the small amount of remaining fuel that “the remaining amount of kerosene is low”.

  As a result, even when the cartridge tank 4 is inserted into the liquid fuel combustion apparatus without being fully filled, when the user approaches any of the switches of the operation unit 17 and approaches the liquid fuel combustion apparatus, there is little Since the remaining amount of fuel can be refueled, it is possible to save the trouble of refueling by approaching the liquid fuel combustion device again when fuel is informed and the refueling is notified, thereby improving usability.

DESCRIPTION OF SYMBOLS 1 Main body tank 2 Oil level detection means 4 Cartridge tank 5 Electromagnetic pump 7 Burner part 15 Cartridge tank detection means 17 Operation part 18 Display part 19 Notification means 20 Control part

Claims (3)

A main body tank provided in the apparatus main body, an oil level detecting means for detecting a remaining fuel level in the main body tank, a burner unit, and an electromagnetic pump for pumping the fuel in the main body tank and supplying it to the burner unit A cartridge tank for supplying fuel into the main body tank, cartridge tank detecting means for detecting whether or not the cartridge tank is inserted into the main body, an operation unit having an operation switch, a room temperature setting switch, and the like, a display unit, The control means for controlling the operation, and when the calculated current remaining fuel amount is less than the predetermined remaining amount, the control portion controls the fuel when any switch of the operation portion is operated. In the liquid fuel combustion apparatus for notifying that the remaining amount is low by the notifying means, the control unit detects that the oil level detecting means is not connected to the main body when the calculated current remaining fuel amount is not less than a predetermined remaining amount. When it is detected that the oil level of kerosene in the tank has continuously decreased for a predetermined time, a notification means notifies that the remaining amount of fuel is low if any switch of the operation unit is operated. Liquid fuel combustion device.   When the cartridge tank detection means detects that the cartridge tank has been removed from the main body, the control unit sets the remaining amount of fuel to an initial value and subtracts the fuel consumption after the start of operation from the remaining amount of fuel. 2. The liquid fuel combustion apparatus according to claim 1, wherein the present remaining fuel amount is calculated.   3. The liquid fuel combustion apparatus according to claim 1, wherein an initial value of the remaining amount of fuel is a capacity of a cartridge tank.

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