JPH0719122A - Liquefied gas fuel container heating device for working machine mounted with liquefied gas fuel engine - Google Patents

Abstract

PURPOSE:To provide a liquefied gas fuel container heating device for a working machine mounted with a liquefied gas fuel engine, having heating adjusting function to the change of outside air temperature. CONSTITUTION:Liquefied gas fuel containers 3 for a working machine mounted with a liquefied gas fuel engine are erected on the engine bed 4 of a liquefied gas fuel engine 1, at the side of the engine 1, and rotary shafts 6 with baffle plates 5 fixed thereto are pivotally supported on the engine bed 4. The baffle plates 5 are placed to face part of the liquefied gas fuel containers 3 and also part of the cooling air outlet 8 of an engine bonnet 7. It is so constituted that the opposed angles of each baffle plate 5 to the liquefied gas fuel container 3 and cooling air outlet 8 can be changed by adjusting and fixing the angle of the rotary shaft 6. A part of hot exhaust air generated by a cooling fan 2 and exhausted from the cooling air outlet 8 is direction-changed by the baffle plate 5 and blasted to heat the liquefied gas fuel container 3, thus accelerating the gasification of liquefied gas fuel.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquefied gas fuel container heating device for various working machines such as rice transplanters, construction machines or tractors equipped with a liquefied gas fuel engine.

[0002]

2. Description of the Related Art As a device for heating a liquefied gas fuel container of a liquefied gas fuel engine to promote vaporization of the liquefied gas fuel, in the prior art, for example, as disclosed in Japanese Utility Model Publication No. 4-35571, as shown in FIG. , There is one configured as follows. That is, the high temperature part of the liquefied gas fuel engine 1 is cooled by the cooling air generated by the cooling fan 2, and the hot exhaust air is blown onto the liquefied gas fuel container 3 to heat it to accelerate vaporization of the liquefied gas fuel. It is composed. The liquefied gas fuel in the liquefied gas fuel container 3 is vaporized in the container 3,
The pressure is adjusted by the pressure regulator 30, mixed with the air flowing in from the air cleaner 31, and burned in the combustion chamber 32 of the engine 1, and the exhaust gas thereof is discharged from the muffler 33 to the outside. By the rotation of the cooling fan 2, the outside air is taken in through the air intake port 34, passes through the periphery of the combustion chamber 32 and the like to be cooled, and then becomes warm exhaust air and is exhausted to the rear of the engine 1. The liquefied gas fuel container 3 is disposed in the discharge space of the warm exhaust air and is heated.

[0003]

The above-mentioned conventional techniques have the following problems. It does not require an electric heater for heating and the temperature of the hot exhaust air is not too high, so it is not overheated, the amount of air is large and vaporization can be sufficiently promoted, and the vaporization capacity increases in proportion to the engine load. However, it does not have the function of heating control for changes in the outside air temperature in summer and winter. That is, the liquefied gas fuel in the liquefied gas fuel container 3 needs to be heated in the winter when the outside air temperature is low because it is difficult to evaporate, but it does not need to be heated in the summer when the outside air temperature is high because it is easily vaporized. Further, in the middle season, it is preferable that the heating state can be adjusted according to the outside air temperature. An object of the present invention is to provide a liquefied gas fuel container heating device for a working machine equipped with a liquefied gas fuel engine, which has a heating adjustment function with respect to changes in the outside air temperature.

[0004]

In order to achieve the above object, the present invention adds the following improved structure to the above prior art, as shown in FIG. 1 or 2, for example. That is, in the liquefied gas fuel container heating device of the working machine equipped with the liquefied gas fuel engine, the liquefied gas fuel container 3
Is erected on the side of the liquefied gas fuel engine 1 on the machine base 4 of the liquefied gas fuel engine 1, and the rotary shaft 6 to which the baffle plate 5 is fixed is pivotally supported on the machine base 4. Then, the baffle plate 5 is made to face a part of each of the liquefied gas fuel container 3 and the cooling air outlet 8 of the engine bonnet 7. Further, by adjusting and fixing the angle of the rotary shaft 6, it is possible to change the facing angle between the baffle plate 5, the liquefied gas fuel container 3 and the cooling air outlet 8. And
A part of the warm exhaust air discharged from the cooling air outlet 8 is deflected by the air guide plate 5 and is blown to the liquefied gas fuel container 3.

[0005]

The present invention operates as follows. A liquefied gas fuel container 3 is erected on a machine base 4 beside the liquefied gas fuel engine 1, and a baffle plate 5 is pivotally supported on the machine base 4 by a rotary shaft 6. The cooling air generated by the rotation of the cooling fan 2 in the engine bonnet 7 cools the engine 1 and becomes warm exhaust air, which is discharged from the cooling air outlet 8. Since the baffle plate 5 faces a part of the cooling air outlet 8, a part of the warm exhausted air discharged from the engine 1 is diverted by hitting the baffle plate 5 of the engine 1. The liquefied gas fuel container 3 on the side is sprayed. As shown in the figure, the facing angle between the baffle plate 5 and the liquefied gas fuel container 3 and the cooling air outlet 8 is, as shown in the figure, a baffle plate 5 (W) in winter or a baffle plate 5 (S) in summer. As described above, the angle of the rotary shaft 6 is changed and fixedly adjusted. As a result, the amount of warm exhaust air blown onto the liquefied gas fuel container 3 can be adjusted, and the heating state can be adjusted according to the outside air temperatures of the winter W and the summer S.

[0006]

The present invention has the following effects because it is constructed and operates as described above. The liquefied gas fuel container 3 is erected on the machine base 4 on the side of the liquefied gas fuel engine 1, and the baffle plate 5 is pivotally supported on the machine base 4 by the rotating shaft 6 and The angle of opposition between the liquefied gas fuel container 3 and the cooling air outlet 8 of the engine bonnet 7 is set to the angle of the rotary shaft 6 as in the wind guide plate 5 (W) in winter or the wind guide plate 5 (S) in summer. Change and adjust and fix. Thus, the liquefied gas fuel container heating device of the working machine equipped with the liquefied gas fuel engine, which has the function of adjusting the amount of warm exhaust air blown to the liquefied gas fuel container 3 and having a heating adjustment function with respect to changes in the outside air temperature, can be provided. it can.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. First Embodiment (see FIG. 1) FIG. 1 (A) is a plan view of a main part of a working machine equipped with a liquefied gas fuel engine, and FIG. 1 (B) is a cutaway side view of the engine bonnet. In the figure, a working machine such as a tractor equipped with a liquefied gas fuel engine cools a high temperature part of the liquefied gas fuel engine 1 with cooling air generated by a cooling fan 2 and blows the hot exhaust air to a liquefied gas fuel container 3. Is heated to accelerate vaporization of the liquefied gas fuel. Then, the liquefied gas fuel container 3 is replaced by the liquefied gas fuel engine 1
On the machine base 4, the liquefied gas fuel engine 1 is erected sideways, and a rotary shaft 6 to which a baffle plate 5 is fixed is pivotally supported on the machine base 4. The liquefied gas fuel container 3 is, for example, a vertical type such as a household LP gas cylinder, and can be detachably attached to the front side of the machine base 4 of the engine 1 by using a chain, a band or other fixtures (not shown). It is fixed to. Then, the liquefied gas fuel in the liquefied gas fuel container 3 is vaporized in the container 3 and supplied to the engine 1 through a pipe, a switch, a pressure regulator, etc. (not shown) to drive the engine 1 and carry out the mounting work. Used as the power of the machine. Due to the rotation of the cooling fan 2 by the engine 1, outside air is sucked in from above and below and on the side behind the engine 1, and after passing through the periphery of the engine 1 and the like to be cooled, it becomes hot exhaust air and the engine bonnet 7 The air is discharged from the front cooling air outlet 8. Further, the baffle plate 5 faces a part of each of the liquefied gas fuel container 3 and the cooling air outlet 8. Also,
By adjusting and fixing the angle of the rotating shaft 6, it is possible to change the opposing angle between the baffle plate 5, the liquefied gas fuel container 3 and the cooling air outlet 8. Then, a part of the hot exhaust air discharged from the cooling air outlet 8 is deflected by the air guide plate 5 and blown onto the liquefied gas fuel container 3.

Second Embodiment (see FIG. 2) FIG. 2 is a view corresponding to FIG. In the liquefied gas fuel container heating device of the working machine equipped with the liquefied gas fuel engine,
Instead of the type in which engine cooling air is sucked in from above and below or on the rear side of the engine 1 and discharged from the cooling air outlet 8 in front of the engine bonnet 7, the engine cooling air is fed from the front cooling air inlet 9 Inhaled, engine bonnet 7
The cooling air outlet 8 can be discharged from the rear side cooling air outlet 8. In this case, the liquefied gas fuel container 3
The rotary shaft 6 to which the baffle plate 5 is fixed is installed on the machine base 4 of the engine 1 near the cooling air outlet 8 on the rear side of the engine hood 7. Then, as in the first embodiment, a part of the hot exhaust air discharged from the cooling air outlet 8 is deflected by the baffle plate 5 and blown to the liquefied gas fuel container 3. There is.

[Brief description of drawings]

1 shows a first embodiment of the present invention, FIG. 1 (A) is a plan view of a main part of a working machine equipped with a liquefied gas fuel engine, and FIG. 1 (B).
FIG. 3 is a side view of the engine bonnet cut away.

FIG. 2 shows a second embodiment of the present invention and corresponds to FIG.

FIG. 3 shows a conventional example, FIG. 3 (A) is a perspective view of a liquefied gas fuel engine, and FIG. 3 (A) is a cutaway side view of the same portion.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Liquefied gas fuel engine, 2 ... Cooling fan, 3 ... Liquefied gas fuel container, 4 ... Machine stand, 5 ... Baffle plate, 6 ... Rotating shaft, 7 ... Engine bonnet, 8
… Cooling air outlet.

Claims (1)

[Claims] 1. A liquefied gas fuel engine (1) is cooled by cooling air generated by a cooling fan (2) at a high temperature portion, and hot exhaust air is blown onto a liquefied gas fuel container (3) to heat the liquefied gas fuel engine. In a liquefied gas fuel container heating device for a working machine equipped with a liquefied gas fuel engine, which is configured to accelerate vaporization of gas fuel, the liquefied gas fuel container (3) is attached to a base (4) of the liquefied gas fuel engine (1). ) The rotary shaft which is erected on the side of the liquefied gas fuel engine (1) and on which the baffle plate (5) is fixed.
(6) is pivotally supported on the machine base (4), and its baffle plate (5) is provided on each part of the liquefied gas fuel container (3) and the cooling air outlet (8) of the engine bonnet (7). By facing and adjusting the angle of the rotating shaft (6), the opposing angle between the baffle plate (5) and the liquefied gas fuel container (3) and the cooling air outlet (8) can be changed. The liquefied gas fuel container is configured such that a part of the warm exhaust air discharged from the cooling air outlet (8) is diverted by the air guide plate (5).
A liquefied gas fuel container heating device for a working machine equipped with a liquefied gas fuel engine, characterized in that it is configured to be sprayed on (3).