JPH064208Y2 - Liquid fuel combustion device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a liquid fuel combustion apparatus having an airtight oil tank,
In particular, the present invention relates to a device having a function of displaying the amount of residual oil.

[Conventional technology]

Conventionally, in this type of liquid fuel combustion apparatus, as a means for confirming the residual oil amount, a peep window attached to the lower part of the oil tank or a float switch for detecting the fuel sibel in the oil pan is used. was there.

[Problems to be solved by the invention]

However, the peep window is very difficult to see because its mounting position is limited, and moreover, only a part of the inside of the tank can be peeked, so it was not necessarily suitable for checking the residual oil amount.

Further, the one provided with the float switch has an advantage that the detection state can be displayed at an arbitrary position, but since the display is based on the binary information by turning the switch on and off, the residual oil amount is displayed. The confirmation could only be done if the fuel in the oil tank had run out or was almost empty.

As described above, in the conventional liquid fuel combustion device of this type,
The range in which the amount of residual oil could be confirmed was limited. For this reason,
For example, there is a problem that it is not possible to estimate the next refueling period by looking at the fuel consumption process.

Therefore, the applicant of the present application has proposed a liquid fuel combustion apparatus which can easily confirm the residual oil amount in the tank by a weight sensor regardless of the amount of the liquid fuel combustion apparatus in order to solve the problem.
I proposed it as 815.

An object of the present invention is to obtain a liquid fuel combustion apparatus capable of more accurately detecting the residual oil amount by further improving the above-mentioned Japanese Patent Application No. 62-7815 filed by the same applicant.

[Means for solving problems]

The liquid fuel combustion apparatus according to the present invention detects the weight of a portion, such as an oil tank, where liquid fuel is stored by a weight sensor, and displays the detected amount of the weight sensor as the residual oil amount. The oil supply pipe for supplying the oil is formed of a single member, and a curved portion for length adjustment is provided in the middle of the oil supply pipe.

[Action]

As described above, since the curved portion for adjusting the length is provided on the refueling pipe, when the refueling pipe is connected, the curved portion can be expanded / contracted to be attached to the weight sensor unit without applying excessive force. The detection output of the sensor is displayed accurately.

〔Example〕

Hereinafter, a preferred embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an internal structure diagram showing a liquid fuel combustion device according to the present invention, and FIG. 2 is a block diagram showing a residual oil amount display device thereof. FIG. 3 is a detailed view of the oil supply pipe. First, in FIG. 1, 1 is an airtight oil tank, 2 is an oil meter attached to the oil tank 1, 3 is an oil pan, 4 is a weight sensor,
5a and 5b are actuators, 6 is a strain plate, 7 is a strain sensor, 8 is a bottom plate, 9 is a combustor, 13 is a blower fan, 14 is an outer case, 17 is an oil pan 3 and a fuel pump 10.
Reference numeral 18 denotes a refueling pipe made of a single member that connects between the refueling pipe and the refueling pipe.

Next, the operation will be described. First, liquid fuel such as kerosene is stored in the oil tank 1.

The oil tank 1 is configured to be detachable from the main body.

The oil pan 3 stores the fuel supplied to the combustor 9 at a constant level. The fuel in the oil receiving tray 3 is automatically replenished from the oil tank 1 using the pressure difference.

The weight sensor 4 includes a pair of actuators 5a and 5b,
It is composed of a strain plate 6 and a strain sensor 7.

The weight sensor 4 is provided between the oil pan 3 and the bottom plate 8 and detects the total weight of the oil pan 3 and the oil tank 1 on the oil pan 3 via the strain plate 6 and the actuators 5a and 5b.

Next, the operation of detecting the residual oil amount will be described. First, the actuators 5 a and 5 b of the weight sensor 4 transmit the load between the oil tank 1 and the oil pan 3 to the strain plate 6. The strain plate 6 is strained by the transmitted load, and the strain sensor 7 outputs an electrical signal that changes according to the strain. The total weight of the oil tank 1 and the oil pan 3 is predetermined. Therefore, from the weight sensor 4, a detection output regarding the total weight of the fuel stored in the oil tank 1 and the oil receiving tray 3 is obtained.

As shown in FIG. 2, the detection output of the weight sensor 4 is subjected to processing such as amplification and bias correction by a signal processing circuit 15 and then an indicator meter 16 which is a kind of analog display.
Given to. The display panel of the indicator meter 16 is provided with scales and characters for displaying the input level as the oil amount. The mounting position of the indicating meter 16 can be freely selected. Therefore, it is possible to arbitrarily select and install the position where the liquid fuel combustion device is easy to see. As a result, the total amount of liquid fuel remaining in the oil tank 1 and the oil receiving tray 3 is displayed in an easy-to-see state regardless of the amount.

By the way, in such a configuration, if the refueling pipe 17 formed of a single member is longer or shorter than a predetermined length, an unreasonable force is applied to the weight sensor 4 when the refueling pipe 17 is connected, and The detection output of the sensor 4 changes and appears. In the present embodiment, therefore, a curved portion 18 for adjusting the length is provided in the horizontal direction in the middle of the oil supply pipe 17. As a result, since the bending portion 18 can be attached while adjusting the length at the time of connection, it is possible to eliminate applying an unreasonable force to the weight sensor 4 and obtain an accurate detection output of the residual oil amount. .

[Effect of device]

As described above, the present invention detects the weight of the portion where the liquid fuel is stored, such as the oil tank, by the weight sensor,
In a device that displays the amount detected by the weight sensor as the amount of oil, an oil supply pipe that connects the fuel storage unit and the combustor is formed of a single member, and a curved portion for length adjustment is provided in the middle of the oil supply pipe. Therefore, the length can be easily adjusted when the refueling pipe is attached, and it is possible to prevent the weight sensor from being subjected to an unreasonable force. Therefore, the accurate residual oil amount can be detected and displayed.

[Brief description of drawings]

FIG. 1 is an internal configuration diagram of a liquid fuel combustion apparatus according to an embodiment of the present invention, FIG. 2 is a block diagram showing a residual oil amount display device,
FIG. 3 is an external view showing an embodiment of the oil supply pipe, FIG. 3 (A) is a plan view and FIG. 3 (B) is a side view. In the figure, 1 is an oil tank, 3 is an oil pan, 4 is a weight sensor,
5a and 5b are actuators, 6 is a strain plate, 7 is a strain sensor, 9 is a combustor, 16 is an indicator, 17 is a refueling pipe, and 18 is a curved portion.

Claims (2)

[Scope of utility model registration request] 1. A liquid fuel combustion apparatus in which a weight sensor detects the weight of a fuel storage portion in which liquid fuel is stored to display the residual oil amount, and the fuel is supplied from the fuel storage portion to a combustor. And a curved portion for adjusting the length is provided in the middle of the oil supply pipe. 2. A utility model registration claim characterized in that the fuel storage portion is composed of an oil tank which can be taken out and an oil pan for storing liquid fuel supplied from the oil tank at a constant level. The liquid fuel combustion apparatus according to item (1).