JPS61280315A - Liquid fuel combustion equipment - Google Patents

Abstract

PURPOSE:To facilitate to confirm a remaining time for the continuation of combustion by a method wherein the system of the title burner is constituted so as to indicate the remaining possible time of combustion under burning with the amount of strong combustion by detecting the weight of a tank, which is reduced to a value lower than a predetermined value, in the titled combustion equipment accommodating a cartridge type fuel tank. CONSTITUTION:A micro-computer 23 controls a combustion control circuit 41 to effect the operation of combustion. When fuel is reduced as it is burnt and the amount thereof has arrived at the predetermined amount, a weight detecting means is operated and a warning signal is inputted into a warning switch 25. The micro-computer 23 operates the remaining combustion time in a condition that the burner is burnt with strong combustion rate from a time inputting the warning signal in accordance with a predetermine program and outputs an indicating signal from an output port 24 to indicate the remaining time instead of a time indication being indicated in an indicator 32. According to this constitution, the remaining time is indicated regardless of the fluctuation of the amount of combustion and confirmation of the remaining time may be facilitated.

Description

Detailed Description of the Invention (a) Industrial Application Field The present invention relates to a car containing a liquid fuel such as kerosene. The present invention relates to a fuel combustor, and particularly provides a liquid fuel combustor that displays the remaining combustible time based on the amount of fuel in a fuel tank and oil pan using a display pressure.

1) Conventional technology Conventionally, in this type of liquid fuel combustor, Japanese Patent Application Laid-Open No. 55-5
As disclosed in Japanese Patent No. 6528, there are burners that detect the amount of fuel and display the remaining combustion time digitally. There is a large difference between the remaining combustion time displayed when the combustion amount is low and when the combustion amount is low, and if the switching of the combustion amount is automatically controlled by a room temperature detection means such as a room thermistor, the remaining combustion time displayed on the display will change. Since the amount of combustion in the bath changes rapidly each time it is switched from strong to weak, it is difficult for the user to see, and it is also difficult for the user to understand the remaining combustion time.

(c) Problems to be Solved by the Invention The present invention has been made in view of the above-mentioned problems, and is designed to display the remaining combustion time without changing it even if the combustion amount of the burner is changed. This is what I did.

B) Means for Solving the Problems The present invention provides a weight detection means for detecting the weight of a cartridge-type fuel tank when a certain amount of fuel is contained before it becomes empty, and an output when the detection means is activated. A micro combeater that calculates and outputs the remaining combustion time that allows combustion to continue in the strong twist lid regardless of the burner combustion amount from the time when an activation signal is received, and the remaining combustion time that the micro combeater outputs. It consists of a display device for displaying information.

(e) Detects when the amount of active fuel has fallen below a certain amount, subtracts the fuel consumption amount depending on whether it is strong or weak from the amount of fuel at predetermined intervals, and calculates the remaining combustion time based on that value. The remaining time is displayed on the hard-twist firing lid (maximum combustion sound), so that the user can always check for the shortest combustion time C and the remaining amount of phosphorus that can continue combustion. You can easily know the time.

(F) Example Hereinafter, an example of the present invention will be described with reference to the accompanying drawings. (1) is the main body of the liquid fuel combustor, which includes a burner (2) such as a rotary gasification burner, a cartridge-type fuel tank (3) containing kerosene as liquid fuel, and kerosene flowing down from the tank (3). It has a built-in oil pan (4) that receives the oil and constitutes an oil level device.

(5) is an electromagnetic pump that supplies the fuel in the oil pan (4) to the burner (2) through the oil supply pipe (6), and connects the lower end opening of the suction pipe (5) to the lower part of the oil pan (4). It is located in .

Further, the pump (5) is controlled by a microcomputer (c) and a combustion control circuit Qll, which will be described later, and the amount of kerosene sent to the burner (2) can be varied in two levels: strong and weak. There is. (7) is a hot air outlet installed at the bottom of a panel (not shown) attached to the front of the main body +11, through which hot air from the burner (2) flows out from the combustion tube (8) into the air passage case (9). The combustion gas and the air blown by the hot air fan a are combined, and hot air is discharged into the room from this hot air outlet (7). aD is an opening/closing lid that opens and closes the entrance/exit of the tank (3), and (12+ is a heat shield plate for the tank (3), which is formed in a cross-circuit shape and also serves as a guide plate for the tank (3).

α3 is a weight detection means that closes a notice switch αa consisting of a microswitch etc. when the weight of the tank (3) decreases, and is attached to the right rear end of the upper surface of the oil pan (4).
1 Fixed support metal fitting αQ and the bent part at the tip (17a)
The rear end is connected to the support fitting (1) so that it can move up and down.
61, a coil spring bracket that energizes the bent portion (17a) of the operating plate Q71 to the advance switch a1, and a coil spring bracket fixed to the front surface of the heat shield plate (12+). It is comprised of a fixing fitting Q9 that locks and supports the other end and has a notice switch Q41 attached thereto, and the actuating plate αη places the fuel tank (3) on the oil pan (4). By doing so, the white liquid will mix with the bottom surface of the tank (3).

Furthermore, when the fuel in the tank (3) drops to the level (a), the springs a~ act against the weight of the tank (3) and move the tip of the actuating plate (17) to the warning switch (14).
) It has a return force trap setting that allows it to move to the side. In addition, this level (a) is a position where combustion can continue for a preset time (for example, 90 minutes) from the activation of the detection means (31). It is a float that has been levitated, and is normally floated at the level (B) position. When the liquid level in the saucer (4) drops from level (B) to level (C), the float (A) is lowered to close the tank.

Next, a block diagram of an electric circuit showing an embodiment shown in FIG. 1 will be explained. (c) is a microcomputer (hereinafter referred to as a microcomputer) that stores in advance the sequence program q-gram for performing combustion operation and has a clock function and a timer function inside. 0 output boats that output display signals such as the current time or remaining combustion time, a first input boat (c) that inputs the signal of the aforementioned advance notice switch I, and a second input boat that inputs the signal of the stop switch ψυ. The engine is equipped with an input/output engine that controls the combustion control circuit (41), which will be described later.

(to) is a power supply terminal which inputs the DC voltage V■ output from the power supply circuit (2!1).- is the general commercial AC power supply of AClooV, and 61 is the GND terminal connected to the ground.

C321 is a display connected to the microcomputer (two additional output ports), and the display 02 has four numeric displays (34), C35, (to) juxtaposed, and the left 2 Digit number display - Displays the time at 0, and the right two digit number display (
C), 06) displays the minutes and remaining combustion time. Further, a colon display body 0D (2) is provided between the display portions (34) and 01 of the display device 04 to display the hours and minutes. C3l (41 is an LED that displays AM and PM).

(4υ is a combustion control circuit connected to the input/output board (2η) of the microcomputer (c), and this control circuit (4υ is a circuit that controls all operations of the combustor according to the output signal of the microcomputer (c)) It is.

The present invention has the above-mentioned configuration, and its operation will be described below.

Now, the m-fuel tank (3) placed on the oil pan (4) is filled with almost full kerosene, and the kerosene in the oil pan (4) is stably stopped at level (B). Open the switch (2υ,
On the other hand, due to the weight of the fuel tank (3), the tip of the actuating plate QD of the detecting means a3 moves down to open the warning switch Q41. In the above state, the time signal is output from the output port (to) of the microcomputer (c) regardless of whether or not the burner (2) is burning, and the display shows, for example, 'AMIO:00' as shown in FIG. When a combustion start signal is input to the microcomputer (2) by the user's operation, the microcomputer (23) & the combustion control circuit (41) are controlled to start combustion operation.

After that, by continuing to burn the burner (2), when the kerosene in the fuel tank (3) is consumed to the level (a), that is, a certain amount of fuel is stored in the tank (3) before it becomes empty. The weight detection means a3 detects the weight of the tank at the time, closes the notice switch a4, and inputs a notice signal to the first input port (c) of the microcomputer (231). From the time when the warning signal is input to the input port (c), the remaining combustion time is calculated based on the flowchart in Figure 8, and the display signal is output from the output capo (H4) to be displayed on the display C4aK with priority over the time signal. do. At this time, the calculation of the remaining combustion time performed by the microcomputer (c) is performed by the first
0 input capo) (from the time when the warning signal is input to 251, it is determined whether the combustion amount of the burner (2) is strong or weak at predetermined time intervals (for example, 1 minute), and depending on the combustion amount. The amount of fuel consumed is subtracted from the value set in advance on the program (remaining amount of kerosene), and the subtracted value is calculated as the remaining combustion time (Tl is set to 0 on the display) that can be continued at a strong twist burn rate. It is to be displayed.

To explain in more detail, for example, when the combustion amount of the burner is strong, 300
At 0 Km/h and 1500 Km/h, the amount of kerosene consumed per minute is approximately 6 cc when the power is high and approximately 3 cc when the power is low.
And, when the weight detection means 0 is activated, the amount of kerosene contained in the fuel tank (3) and oil pan (4) is approximately 60
If it is 0 cc, combustion can be continued for about 100 minutes with a strong twist firing amount. Therefore, by setting a value of 1540'' (remaining kerosene cap) on the microcomputer (231) with a margin in advance in the program, when the detection means Q31 is activated, the indicator 0 will be displayed as shown in Fig. 6. 90'' is displayed.

After that, if the operation continues with a strong twist firing amount, the remaining combustion time (Tl will be subtracted by "i" every minute and will be 0 as shown in Figure 7) will be displayed on the display c34. becomes.

In addition, if operation is continued at a weak combustion amount after the detection means 03 is activated, the remaining combustion time displayed on the display 04 is subtracted by "I+" every 2 minutes and displayed after 180 minutes. The remaining combustion time is 0" as shown in Figure 7.
becomes.

The relationship between the activation of the detection means α3 and the remaining combustion time displayed on the display is shown in the table below. The remaining combustion time for a strong twist amount is always displayed by changing the interval at which the remaining time is subtracted for a weak burn amount.

In addition, even if the combustion amount of the burner (2) is varied by a room thermistor or manual operation (not shown) while the display unit 0 is displaying the remaining combustion time, the combustion amount is determined every minute and the remaining combustion time is determined. Since the combustion time is not calculated, there is little display error, and there is no need to change the display depending on the amount of combustion.

If combustion continues without replenishing the fuel tank (3) with kerosene, the kerosene in the fuel tank (3) will be completely empty and the remaining combustion time displayed on the display 04 will be @
After that, the kerosene in the oil pan (4) reaches the level (c).
When the temperature decreases to 1, the float wire separates from the stop switch 3υ and closes the stop switch (211), whereby a stop signal is input to the second input port (261) of the microcomputer +231 and the combustion control circuit (41) control to stop combustion operation.

In addition, even if the combustion operation is stopped by the user's operation while the remaining combustion time is displayed on the display 04, the microcomputer (c) will display the value at the time of extinguishing the burner (2) (remaining kerosene ) is memorized and held, and at the start of the next combustion operation, calculation of the remaining combustion time is started based on that value (1 ton of remaining kerosene) K, and the calculation is displayed.

Further, as mentioned above, the determination of combustion and the calculation of the remaining combustion time are performed every minute, but it is possible to improve the accuracy by shortening the determination time and the period of calculation. It is possible.

(f) Effects As described above, the present invention is capable of varying the combustion amount in at least two stages of strong e and weak.From the time when the weight of the fuel tank that supplies liquid fuel to the burner becomes less than a predetermined heavy sound. The display displays the remaining combustion time that can be burned at a high twist rate regardless of the burner combustion rate, so even if the burner combustion rate is variable, the remaining combustion time at a high twist rate is displayed. Therefore, the display of the remaining combustion time does not change as the combustion amount changes, and the user can easily check the remaining combustion time.

[Brief explanation of the drawing]

Figures 1 to 8 show an embodiment of the present invention. Figure 1 is a block diagram of the electric circuit, Figure m2 is a vertical cross-sectional side view of the main parts, and Figure 3 is a front view of Figure 2. Figure 4 is a cross-sectional front view of the main part of the liquid fuel combustor, Figures 5 to 7 are diagrams explaining the display, and Figure 8 calculates the remaining combustion time inside the microcomputer. It is a flowchart figure. (2)...Burner, (3)...Fuel tank, Q
3i...Weight detection means, c! 31...Microcomputer, 04...Display unit. Applicant: Sanyo Electric Co., Ltd. and 1 other representative: Patent attorney: Yasuo Sano Figure 5, Figure 6, Figure 7, Figure 8

Claims (1)

[Claims] (1) In a liquid fuel combustor equipped with a burner that can vary the combustion amount in at least two stages, strong and weak, a fuel tank that accommodates liquid fuel to be supplied to the burner, and a weight of the tank that is less than or equal to a predetermined weight. weight detection means that operates and sends out an activation signal when the detection means reaches the point where the activation signal is reached, and calculates and outputs the remaining combustion time during which combustion can be continued at a high twist firing amount regardless of the burner combustion amount from the time when the activation signal of the detection means is received. A liquid fuel combustor comprising a microcomputer and a display that displays the remaining combustion time output by the microcomputer.