JPH0763591A - Fuel exhaustion predicting display device - Google Patents

Abstract

PURPOSE:To eliminate action failure by computing the fuel residual quantity of a fuel tank from the capacity value of a fuel tank and the fuel consumption value of a fuel device respectively preset by setting means, and also from the operating time of the fuel device. CONSTITUTION:The capacity is set by a tank capacity setter 3, and fuel consumption is set by a fuel setter 4. The operating time is known by a fuel device operation sensor 8. A CPU 9 computes the residual quantity of a fuel tank 2 by a specified expression and makes a fuel residual quantity display 5 display the residual quantity. A reset switch 7 is pressed when an alarm is stopped and fuel is filled full in the tank 2. In the case of not filling fuel full in the tank 2, the filled quantity is set to the setter 3, and the switch 7 is pressed to compute the correct residual quantity of fuel.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuel shortage forecast display device for detecting the remaining fuel amount in a fuel tank for supplying fuel such as heavy oil or kerosene to a combustion device.

[0002]

2. Description of the Related Art Conventionally, in order to detect the remaining amount of fuel in a fuel tank that supplies fuel to a combustion device, a float sensor is attached to the fuel tank itself, and the float is moved up and down according to the remaining amount of the fuel. I was checking the amount. Normally, such fuel tanks are often installed outdoors instead of indoors for safety reasons. In addition, heavy oil is often used as fuel in commercial combustion devices used in greenhouses and the like.

[0003]

Since the conventional fuel exhaustion forecast display device is constructed as described above, when the fuel tank is installed outdoors, it is necessary to confirm the fuel remaining amount outdoors. There was a problem that it was necessary to go to the fuel tank of, and the remaining amount could not be monitored indoors. Further, the float sensor has a problem in that when a fuel such as heavy oil is used especially in a cold region, it causes clogging and malfunction.

The present invention has been made to solve the above problems, and an object thereof is to obtain a fuel shortage forecast display device that can be monitored indoors without using a float sensor.

[0005]

A fuel depletion forecast display device according to the present invention comprises a capacity setting means for setting the capacity of a fuel tank and a fuel consumption setting means for setting the fuel consumption of a combustion device.
Measuring means for measuring the operating time of the combustion device, and calculating means for calculating the remaining fuel amount in the fuel tank by inputting the set values and measured values of the capacity setting means, the fuel consumption setting means, and the measuring means. Be prepared.

[0006]

According to the present invention, there is provided a fuel depletion forecast display device which comprises a fuel tank capacity set value and a combustion device fuel consumption set value.
By calculating the operating time of the combustion device from the measured value and the fuel remaining amount of the fuel tank by the calculating means, the fuel remaining amount can be known without using the float sensor.

[0007]

【Example】

Example 1. An embodiment of the present invention will be described below with reference to the drawings. 1 is a block diagram showing an embodiment of a fuel shortage forecast display device according to the invention of claim 1. In FIG. 1 is a combustion device such as a boiler, 2 is a fuel tank for supplying fuel to the combustion device 1,
3 is a tank capacity setting device (setting means) for setting the capacity of the fuel tank 2, 4 is a fuel consumption setting device (setting means) for setting the fuel consumption of the combustion device 1, and 5 is fuel for displaying the remaining fuel amount in the fuel tank 2. It is a remaining amount indicator, such as an LED or LCD. Further, 6 is an alarm device for generating a warning sound when the fuel remaining amount in the fuel tank 2 is low, and 7 is a CPU described later.
A reset switch for resetting 9, a combustion device operation sensor (measuring means) 8 for checking the operating state of the combustion device 1,
Is a CPU (calculation means) for calculating the remaining amount of fuel, and 10 is a power supply for operating the above devices.

Next, the operation will be described. Fuel tank 2
Is U (l), the capacity of the fuel tank 2 is V (l), the fuel consumption of the combustion device 1 is Q (l / h), and the operating time of the combustion device 1 is T (h),

U = V-QT

It is represented by Here, 1 is liter and h is time. The capacity V is set by the tank capacity setting device 3, and the fuel consumption Q is set by the fuel consumption setting device 4. Further, since the operating time T can be known by the combustion device operation sensor 8, the CPU
Reference numeral 9 calculates the remaining amount U of the fuel tank 2 by the above formula, and displays it on the remaining fuel amount indicator 5. Further, when the remaining amount becomes, for example, 1/5 of the capacity of the fuel tank 2, the alarm device 6 issues an alarm.

When the reset switch 7 is pressed, the CPU
Since 9 is reset to the initial state, the alarm of the alarm device 6 is stopped, and the display content of the fuel remaining amount display device 5 matches the content of the tank capacity setting device 3. Therefore, the reset switch 7 is pushed when the alarm device 6 is stopped and when the fuel tank 2 is filled with fuel. if,
If the fuel tank 2 is not filled with fuel, the amount of the fuel added is set in the tank capacity setting device 3, and the reset switch 7
By pressing, you can calculate the exact amount of fuel remaining.

[0012]

As described above, according to the present invention, the capacity value of the fuel tank and the fuel consumption value of the combustion device set in the setting means in advance, and the operating time of the combustion device measured by the measuring means, Since it is configured to calculate the amount of fuel remaining in the fuel tank, it is not necessary to use a Floto sensor, and malfunctions such as clogging occur even when using fuel such as heavy oil in an outdoor fuel tank especially in cold regions. There is an effect that a fuel depletion forecast display device that can be monitored indoors without causing a fire is obtained.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an embodiment of a fuel shortage forecast display device according to the present invention.

[Explanation of symbols]

 1 Combustion device 2 Fuel tank 3 Tank capacity setting device (setting device) 4 Fuel consumption setting device (setting device) 8 Combustion device operation sensor (measurement device) 9 CPU (calculation device)

Claims (1)

[Claims] 1. A fuel depletion forecast display device for detecting a fuel remaining amount of a fuel tank for supplying fuel to a combustion device, and a fuel consumption setting device for setting a fuel consumption of the combustion device and a capacity setting means for setting a capacity of the fuel tank. Means, a measuring means for measuring the operating time of the combustion device, a set value and a measured value from the capacity setting means, the fuel consumption setting means, and the measuring means, and the remaining fuel amount in the fuel tank is calculated. A fuel depletion forecast display device comprising a calculation means.