JP7107872B2 - Evaporative combustion device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a vaporization combustion apparatus for vaporizing and burning fuel oil.

Conventionally, when the amount of fuel oil drops below a predetermined level, this type of system issues an alarm and automatically stops combustion in the combustion section. (For example, see Patent Document 1)

In addition, in order to allow fuel to be supplied before the amount of fuel drops below a predetermined amount and the combustion of the combustor automatically stops, the remaining amount of oil in the fuel tank that can be attached and detached from the main body of the device is displayed. There is a device that measures the weight of a fuel tank stored in the device with a weight sensor and displays the weight. is displayed, in order to be able to provide appropriate information corresponding to the weight when the amount of liquid fuel in the fuel tank is the weight specified by the kerosene amount display means, in advance in the manufacturing process stage of the heater , the load when the liquid fuel is fully packed in the fuel tank is read by the weight detection device, the signal from the weight detection device is stored in the storage device via the adjustment setting device, and the actual heating is performed. In some cases, when the machine is in use, the information calculated by the central control unit based on the data stored in the storage device is output to the kerosene amount display means. (For example, see Patent Document 2)

Further, the weight of the fuel tank itself is stored in advance, and a sensor signal from a weight sensor is inputted to correct the remaining amount signal corresponding to the remaining amount of liquid fuel based on the stored weight of the fuel tank itself. there were. (See Patent Document 3, for example)

Utility Model Registration No. 2588169 JP-A-11-94247 JP-A-64-84016

By the way, in this conventional system, the weight detection device reads the load when the liquid fuel is fully filled in the fuel tank in advance in the manufacturing process of the heater, and the signal from the weight detection device is adjusted and set. A process of adjusting the variation in the output of the weight sensor, such as a process of storing the data in a storage device via the device, or a process of storing the weight of the empty fuel tank itself in the manufacturing process stage was required.

In order to solve the above problems, the present invention provides a evaporative combustion apparatus comprising a main body, a combustion section, a fuel tank, fuel tank weight detection means, a control device, and a display section. The fuel tank weight detection means detects the weight of the fuel tank inserted into the main body, and the control device stores the output value T of the fuel tank weight detection means when the fuel tank is absent. The output value T of the fuel tank weight detection means when the fuel tank is full is stored as a value N, and the output value T of the fuel tank weight detection means when the fuel tank is full is stored as a memory value F. When the fuel tank is inserted into the main body, When the output value T of the fuel tank weight detecting means is larger than the stored value F, the stored value F is updated to the output value T at that time and stored, and the range from the stored value N to the stored value F is stored. , the amount of remaining oil in the fuel tank is displayed on the display unit based on the current output value T of the fuel tank weight detection means.

According to claim 2, in claim 1, there is provided a fuel tank detection means for detecting whether or not the fuel tank is inside the main body, and the control device is configured such that the fuel tank detection means When it is detected that there is no tank in the main body, the output value T at that time is smaller than the stored value F, and the output value T at that time is an initial value stored in advance by the control device . When it is larger than f, the correction value H obtained by multiplying the stored value F by the correction coefficient a is compared with the output value T, and when the output value T is equal to or greater than the correction value H, the stored value F is output at that time. When the output value T is less than the correction value H, the stored value F is updated to the correction value H and stored.

In claim 3, in claim 1 or claim 2, further comprising a fuel tank detecting means for detecting whether or not the fuel tank is inside the main body, wherein the control device comprises the fuel tank detecting means. detects that the fuel tank is no longer in the main body, it updates the stored value N to the output value T at that time and stores it, and the fuel tank detection means detects that the fuel tank is in the main body. When the output value T at that time is larger than the stored value F, the stored value F is updated to the output value T at that time and stored.

According to claim 1 of the present invention, the fuel tank weight detecting means detects the weight of the fuel tank inserted into the main body, and the control device detects the weight of the fuel tank when there is no fuel tank. The output value T of the detection means is stored as a memory value N, and the output value T of the fuel tank weight detection means when the fuel tank is full is stored as a memory value F, and the main body stores the When the fuel tank is inserted and the output value T of the fuel tank weight detection means is larger than the stored value F, the stored value F is updated to the output value T at that time and stored, and the stored value N is changed to Since the remaining amount of oil in the fuel tank is displayed on the display unit from the range up to the stored value F and the current output value T of the fuel tank weight detection means, the main body can Even if the fuel tank is inserted into the main unit, if the fuel tank is filled up this time and the fuel tank is inserted into the main body, the stored value F when there is a full fuel tank will be the same as when there is a full fuel tank. It is possible to automatically approach the output value T, improve the accuracy of the display level of the remaining oil amount in the fuel tank, and display an accurate remaining oil amount in the fuel tank on the display.

Further, according to claim 2, there is provided a fuel tank detection means for detecting whether or not the fuel tank is inside the main body, and the fuel tank detection means detects whether or not the fuel tank is present in the main body. is detected, the output value T at that time is smaller than the stored value F, and when the output value T at that time is greater than the initial value f previously stored as the first stored value F, the stored value A correction value H obtained by multiplying F by a constant correction coefficient a is compared with the output value T, and when the output value T is equal to or greater than the correction value H, the stored value F is updated to the output value T at that time. When the output value T is less than the correction value H, the stored value F is updated to the correction value H and stored. When the amount of oil to fill the tank is filled, correction is performed by updating and storing the stored value F to the correction value H. is corrected by updating the stored value F to the output value T, which is the fuel supply amount of this time, and memorizing it. By improving the accuracy of the display, it is possible to display an accurate amount of residual oil in the fuel tank.

Further, according to claim 3, there is provided a fuel tank detecting means for detecting whether or not the fuel tank is inside the main body, and the control device detects whether or not the fuel tank is inside the main body. When it is detected that the fuel tank has become empty, the stored value N is updated to the output value T at that time and stored, and the fuel tank detecting means detects that the fuel tank has changed from being absent to being present in the main body. When the output value T at that time is larger than the stored value F when it is detected, the stored value F is updated to the output value T at that time and stored. to the stored value F, the accuracy of the display level of the remaining oil amount in the fuel tank is improved, and an accurate remaining oil amount in the fuel tank can be displayed on the display unit.

1 is a perspective view showing a vaporization combustion device to which one embodiment of the present invention is applied; FIG. Cross-sectional view of the main part. FIG. 2 is a configuration diagram of the main part. The block diagram of the same control circuit. The flowchart figure.

Next, one embodiment of the invention according to the present invention will be described based on the drawings.
Reference numeral 1 denotes a main body that constitutes a vaporization type combustion apparatus installed indoors. Inside the main body 1, a combustion section 2 comprising a vaporization burner; Equipped with a fan 4 for convection at the rear opening of the main body 1, a hot air outlet 5 at the front of the main body 1, and an operation part 6 at the upper part of the front side of the main body 1. Heating is performed by blowing hot air into the room from the hot air outlet 5 by the blower 4 .

The combustion section 2 comprises a vaporization section 9 having a heater 8 below a burner head 7 having a plurality of flame holes. Liquid fuel is supplied through an oil feed nozzle 12 by driving a displacement type electromagnetic pump 11, and a mixed gas of vaporized gas obtained by vaporizing the liquid fuel and combustion air supplied from a combustion blower 13 through an air passage 14 is produced as described above. Burning is carried out in the flame holes of the burner head 7, and during combustion, heat is recovered from the flame by an annular heat recovery ring 15 provided at the upper end of the vaporizing part 9 so as to face the plurality of flame holes, and the heater 8 is energized. It has a low turndown ratio and quiet evaporative combustion.

The operation unit 6 includes an operation switch 16 for commanding start/stop of operation, a room temperature setting means 19 configured by a room temperature rise switch 17 and a room temperature fall switch 18 for setting a desired room temperature, and a residual oil amount. Various operation switches such as a display switch 20, a timer switch, and an extension switch, and a display section 21 for displaying the time, set room temperature, and remaining oil amount are provided.

A vaporization temperature sensor 22 detects the temperature of the vaporization unit 9 heated by the heater 8, and the controller 3 turns off the heater 8 when the temperature detected by the vaporization temperature sensor 22 reaches a predetermined upper limit temperature. Also, when the temperature reaches a predetermined lower limit, the heater 8 is turned on to keep the temperature of the vaporizing section 9 within a temperature range where the liquid fuel can be vaporized satisfactorily.

Further, the control device 3 monitors the temperature detected by the vaporization temperature sensor 22 according to an operation command from the operation switch 16, heats the vaporization section 9 to a temperature at which the liquid fuel can be vaporized by the heater 8, and When the temperature of 9 is raised to a temperature suitable for combustion, the electromagnetic pump 11 and the combustion blower 13 are started to drive, the mixture gas is ignited by the ignition device 23 to start combustion, and the convection blower 4 on the back of the main body 1 The electromagnetic pump 11 and the combustion blower 13 are controlled according to the deviation between the room temperature detected by the room temperature sensor 24 provided near the room temperature setting means 19 and the room temperature set by the room temperature setting means 19 to vary the combustion power. The room temperature set by the room temperature setting means 19 is controlled.

A fuel tank detector 25 detects whether or not the fuel tank 26 is inside the main body 1. When the fuel tank 26 is inserted into the main body 1, it contacts the side surface of the fuel tank 26 and closes, thereby closing the fuel tank 26. It is composed of an opening/closing switch which is opened when removed from the main body 1, and when the tank detection means 25 detects that the fuel tank 26 is removed from the main body 1 during operation, the control device 3 stops the operation.

When the fuel tank 26 is inserted into the main body 1 , the mouthpiece 27 at the tip of the fuel tank 26 is inserted into the tank insertion opening 28 formed in the oil receiving pan 10 .
An oil filter 29 is arranged in the tank insertion port 28 to filter out impurities such as dust mixed in the fuel oil. A fuel tank 26 is placed thereon.

A pin 30 protrudes from the center of the oil filter 29. When the fuel tank 26 is mounted, the pin 30 opens a fuel discharge port 31 provided in the mouthpiece 27 of the fuel tank 26. The fuel in the fuel tank 26 is supplied through the oil filter 29 into the oil pan 10 .

When the liquid level in the oil pan 10 rises and reaches the fuel discharge port 31, the supply of fuel from the fuel tank 26 is stopped. Fuel is stored.

Reference numeral 32 denotes an oil amount detecting means consisting of a float switch, which detects when the amount of fuel in the oil pan 10, which temporarily stores the fuel from the fuel tank 26, has fallen below a predetermined amount.
A timer means 33 counts a predetermined time.

Reference numeral 34 denotes an oil tank weight detecting means which is provided around the tank insertion opening 28 of the oil pan 10. When the oil tank 26 is inserted into the main body 1 of the fan heater, the mouthpiece 27 at the tip of the oil pan 26 is detected by the oil pan 10. At this time, the fuel tank 26 comes into contact with the fuel tank weight detection means 34, and the weight of the fuel tank 26 is applied to the fuel tank weight detection means 34. The output value of the fuel tank weight detection means 34 changes.

Next, the operation of this embodiment will be described with reference to the flow chart of FIG.
First, when the state in which the fuel tank detection means 25 detects that the fuel tank 26 is present in the main body 1 of the fan heater changes to the state in which it detects that there is no fuel tank 26 in the main body 1 (S1), The control device 3 updates the stored value N when the fuel tank 26 is absent to the current output value T of the fuel tank weight detection means 34 and stores it (S2).

Next, when there is no change from the state in which it is detected that there is a fuel tank 26 in the main body 1 in (S1) to the state in which it is detected that there is no fuel tank 26 in the main body 1, or when the above-mentioned fueling is performed in (S2). After updating and storing the stored value N when the tank 26 is absent to the current output value T of the fuel tank weight detection means 34, the fuel tank detection means 25 detects that the fuel tank 26 is inside the main body 1 of the fan heater. When there is a change from the state in which it is detected that there is no fuel tank 26 to the state in which it is detected that there is a fuel tank 26 in the main body 1 (S3), the current output value T of the fuel tank weight detection means 34 and the full fuel tank When the current output value T of the fuel tank weight detecting means 34 is greater than or equal to the stored value F when the fuel tank 26 is full (S4), Next, the current output value T of the fuel tank weight detection means 34 is compared with the upper limit value U stored in advance in the control device 3 when there is a full fuel tank 26, and the output value T is When it is equal to or less than the upper limit value U (S5), the stored value F is updated to the current output value T of the fuel tank weight detection means 34 and stored (S6).

This upper limit value U is the upper limit value when the full fuel tank 26 is inserted into the main body 1, that is, the output value T of the fuel tank weight detection means 34 when the full fuel tank 26 is inserted into the main body 1. is the upper limit value, and when the current output value T of the fuel tank weight detecting means 34 exceeds the upper limit value U, the fuel tank 26 is inserted into the main body 1. In this case, it is determined that the fuel tank 26 is pushed by hand or inserted with force.

Then, in (S6), after the stored value F is updated to the current output value T of the fuel tank weight detection means 34 and stored, the stored value N when there is no fuel tank 26 is filled. The range up to the stored value F when the tank 26 is present is divided into the number of display levels to calculate the remaining oil amount display level in the fuel tank (S7).

Then, the remaining oil amount display level in the fuel tank is reset based on the display level of the remaining oil amount in the fuel tank calculated in (S7) (S8), and the current output value T of the fuel tank weight detection means 34 is used as the fuel tank remaining amount display level. The current remaining oil amount in the fuel tank is displayed on the display unit 21 in comparison with the oil amount display level (S9).

As a result, when the fuel tank 26 is inserted into the main body 1 without being filled with fuel at the previous fueling, the output value T of the fuel tank weight detection means 34 of the fuel tank 26 which has not been filled up to the previous full tank is detected. It is stored as the stored value F when the fuel tank 26 is full. Since the value T is updated and stored as the stored value F when the fuel tank 26 is full, the stored value F is automatically changed to the output value T when the fuel tank 26 is full. The display unit 21 can display an accurate remaining oil amount in the fuel tank by improving the accuracy of the display level of the remaining oil amount in the fuel tank.

Also, in (S4), when the current output value T of the fuel tank weight detection means 34 is less than the stored value F when the fuel tank 26 is full, then the current output of the fuel tank weight detection means 34 The value T is compared with the initial value f stored in advance by the control device 3, and when the current output value T of the fuel tank weight detection means 34 is equal to or greater than the initial value f (S10), then the current A comparison is made to see if the output value T of the fuel tank weight detection means 34 is less than a correction value H obtained by multiplying the stored value F by a correction coefficient a set to a value smaller than 1 (S11).

Then, in (S11), when the current output value T of the fuel tank weight detection means 34 is less than the correction value H obtained by multiplying the stored value F by the correction coefficient a, when the fuel tank 26 is full. The stored value F is updated to the correction value H obtained by multiplying the stored value F by the correction coefficient a and stored (S12), and the process proceeds to (S7).

Here, the correction coefficient a is used to correct the case where the previous oil supply was more than the rated full tank, and is set to a constant value smaller than 1, such as 0.9 or 0.95. be.

Also, in (S3), when the state in which the fuel tank detecting means 25 detects that there is no fuel tank 26 in the main body 1 of the fan heater does not change to the state in which it detects that there is a fuel tank 26 in the main body 1. Or, when the output value T exceeds the upper limit value U in (S5), or when the current output value T of the fuel tank weight detection means 34 indicates that the fuel tank 26 is full in (S10). is less than the initial value f, the display level of the remaining oil amount in the fuel tank is not set again, and the previous setting is left as it is (S13), and the process proceeds to (S9).

As a result, each time the amount of fuel supplied to the fuel tank 26 during fueling increases, the stored value F when the fuel tank 26 is full is changed to the current value by (S4), (S5), and (S6). Since the output value T of the fuel tank weight detection means 34 is updated and stored, the remaining oil amount display level in the fuel tank 26 can be automatically adjusted when the amount of fuel supplied to the fuel tank 26 increases.

Further, the fuel tank 26 is designed to have a rated oil amount when 70% to 90% of the total capacity is filled. When 90% of the total volume is filled with oil and the oil supply tank 26 is inserted into the main body 1, the stored value F is updated and stored as a full oil amount larger than the rated full tank oil amount. (S5) Based on this, the remaining oil amount display level in the fuel tank is calculated by dividing it into the number of display levels (S6). When the fuel tank 26 is inserted into the main body 1, the display level of the remaining oil amount in the fuel tank remains the same as before, so the full tank may not be displayed.

Therefore, when the fuel tank 26 filled with 90% of the total capacity of the fuel tank 26 is inserted into the main body 1, the process proceeds from (S4) to (S10). The output value T of the weight detection means 34 is compared with the initial value f when the fuel tank 26 is full.

Here, the initial value f is the lower limit value when the full fuel tank 26 is inserted into the main body 1, that is, the output of the fuel tank weight detection means 34 when the full fuel tank 26 is inserted into the main body 1. This is a value at which the output value T of the fuel tank weight detecting means 34 does not become smaller than this value even if there are variations, variations in the weight of the fuel tank 26 itself, changes in density due to the temperature of the fuel, etc., and the current fuel tank weight. If the output value T of the detecting means 34 is less than the initial value f, which is the lower limit, it is determined that the fuel tank 26 was inserted into the main body 1 without filling the tank completely, and the process proceeds to (S13). Since the display level of the remaining oil amount in the fuel tank is not reset and remains unchanged from the previous setting, for example, when a half-filled fuel tank 26 is inserted into the main body 1, the current remaining oil amount in the fuel tank is displayed on the display unit 21. is displayed halfway, and it is possible to prevent erroneous indication that the tank is full when the tank is not full.

Further, when the current output value T of the fuel tank weight detection means 34 is equal to or greater than the initial value f which is the lower limit value at (S10), the process further proceeds to (S11), and at (S11) the current fuel tank weight detection means is detected. If the output value T of 34 is less than the correction value H obtained by multiplying the stored value F by the correction coefficient a, it is determined that the previous oil supply exceeded the rated full tank, and the process proceeds to (S12). By updating and storing the stored value F when the fuel tank 26 is full to the correction value H obtained by multiplying the stored value F by the correction coefficient a, the previous refueling exceeds the rated full tank. Even after fueling, the stored value F can be automatically brought close to the output value T when the rated full fuel tank 26 is present, and the accuracy of the remaining oil amount display level in the fuel tank is improved and accurate. The amount of remaining oil in the fuel tank can be displayed on the display unit 21.

Further, when the current output value T of the fuel tank weight detection means 34 is equal to or greater than the correction value H obtained by multiplying the stored value F by the correction coefficient a in (S11), the previous fueling exceeded the rated full tank. After refueling, it is judged that although the refueling exceeds the rated full tank this time, it is determined that refueling was less than the previous time, and the process proceeds to (S6), where the stored value F is changed to the current output value of the refueling tank weight detection means 34. By updating and storing T, even if the current refueling is less than the previous refueling but the refueling exceeds the rated full tank, the stored value F is set when the rated full tank 26 is present. can be automatically brought close to the output value T of , and the display unit 21 can display an accurate remaining oil amount in the fuel tank by improving the accuracy of the display level of the remaining oil amount in the fuel tank.

As described above, the full-tank state ranges from less than the rated full-tank amount to more than the rated full-tank amount. F is updated and stored, and based on this, the display level of the remaining oil amount in the fuel tank is calculated by dividing it into the number of display levels. By improving the accuracy of the level, it is possible to display an accurate amount of remaining oil in the fuel tank on the display unit 21. - 特許庁

REFERENCE SIGNS LIST 1 main body 2 combustion section 3 control device 21 display section 26 fuel tank 34 fuel tank weight detection means

Claims (3)

A vaporization combustion apparatus comprising a main body, a combustion section, a fuel tank, fuel tank weight detection means, a controller, and a display, wherein the fuel tank weight detection means is inserted into the main body. The weight of the fuel tank is detected, and the control device stores the output value T of the fuel tank weight detection means when the fuel tank is absent as a memory value N, and the fuel tank is full. The output value T of the fuel tank weight detection means in the state of is larger, the stored value F is updated to the output value T at that time and stored, and from the range from the stored value N to the stored value F and the current output value T of the fuel tank weight detection means, the A evaporative combustion device, wherein the remaining oil amount in a fuel tank is displayed on the display unit. A fuel tank detecting means for detecting whether or not the fuel tank is inside the main body is provided, and the control device detects that the fuel tank detecting means has changed from being absent to being present inside the main body. When the output value T at that time is smaller than the stored value F and when the output value T at that time is larger than the initial value f stored in advance by the control device , the stored value F is multiplied by the correction coefficient a. The corrected value H is compared with the output value T, and when the output value T is equal to or greater than the corrected value H, the stored value F is updated to the output value T at that time and stored. 2. The evaporative combustion apparatus according to claim 1, wherein when the correction value is less than the correction value H, the stored value F is updated to the correction value H and stored. A fuel tank detecting means for detecting whether or not the fuel tank is inside the main body is provided, and the control device detects that the fuel tank detecting means changes from presence to absence of the fuel tank inside the main body. , the stored value N is updated to the output value T at that time and stored, and when the fuel tank detection means detects that the fuel tank is present in the main body from absent, the output value T at that time is stored. is greater than said stored value F, said stored value F is updated to the output value T at that time and stored.

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