JPH08242707A - Device for preventing frost damage - Google Patents

Abstract

PURPOSE: To provide the subject device capable of preventing frost damage to crops cultured in a field with a small heat loss, by supporting a blower in a warm air layer and sending hot air of a burner from underside of the blower to the blower. CONSTITUTION: A blower F is supported on the top of a strut 3 in a warm air layer in the position of the blower to send air toward the surface of the ground GL. A burner device 1 for generating hot air is installed below and in the vicinity of the blower by fixing to the strut and being supported by it.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a frost damage prevention device for preventing a crop cultivated in a field from being damaged by frost.

[0002]

2. Description of the Related Art Crops such as mulberries and fruit trees are greatly damaged by frost during the period when new shoots are growing.
In particular, fruit trees such as apples, pears, peaches, and cherries suffer devastating damage when the vase that has been growing is damaged by frost.

The frost damage to the crops caused by this late frost causes heavy cold air generated by strong radiant cooling to flow like a river on the slopes at night in a sunny day, and accumulates in a basin or a low valley. It is generated by pushing up the warm air there and wrapping cold air around the crops in the area.

From the above, as a measure against frost damage to crops caused by late frost, as shown in FIG. 1, burner devices 1 such as kerosene burners are arranged at desired intervals in the field, and The chimney 2 which guides the combustion gas is erected in the shape of a high pillar so that the upper end portion reaches the warm air layer Y pushed up by the heavy cold air layer W generated by the radiative cooling,
At the upper end of the chimney 2, there is a blower F operated by energizing the motor M, and the blowing direction of the blower F is the ground surface G.
Assemble and support so that it will face L. Then, when the operation of the burner device 1 and the blower F is controlled by a temperature sensor arranged at an appropriate place in the field, the temperature near the ground surface drops to a predetermined temperature due to the flow of cold air by radiative cooling. In addition, by blowing the warm air of the warm air layer Y, which is pushed up by the cool air and forms the inversion layer, toward the ground surface by the operation of the blower F, the air temperature near the ground surface is re-inverted, and the cold air around the crop is reheated. At the same time, the hot air discharged from the discharge port 20 of the chimney 2 by the operation of the burner device 1 is merged with the warm air of the warm air layer Y by the operation of the blower F and blown toward the ground surface GL. I take it down and try to improve the anti-frost effect.

[0005]

In the above-mentioned frost preventing means, the inversion layer generated by pushing up the warm air layer Y by the cold air layer W normally occupies a height position of 6 to 10 m. In order to position the blower F in the warm air layer Y higher than the inversion layer, the chimney 2 serving as a pillar must be erected up to at least about 8 m.
The manufacturing cost is high in order to ensure that the blower F is assembled and supported with sufficient strength, and the hot air generated by the burner device 1 is discharged from the discharge port 20 at the upper end of the chimney 2 through the long chimney 2. However, there is a problem that the cooling is remarkable and the thermal efficiency is poor.

[0006]

[PROBLEMS] The present invention has been made to solve the above-mentioned problems that occur in the conventional means, and ensures that the blower F is positioned in the warm air layer Y above the inversion layer.
A high support is to provide a new means for supplying the hot air generated by the burner device 1 to the blower F in a heat-efficient state while ensuring reliable operation at low cost. To aim.

[0007]

In the present invention, as a means for achieving this object, a blower operated by energizing a motor is provided at the upper end of a pillar that stands high in a field. A frost damage prevention device characterized in that a burner device that is assembled and supported in a posture in which the blowing direction by operation is directed to the ground surface and that generates hot air is closely arranged below the blower and is assembled and supported on the support column. Is to be raised.

[0008]

In the means of the present invention configured as described above, the blower F is supported at a height position of about 8 m from the ground surface GL. Instead of using the chimney 2 of the burner device 1, the blower F is separated from the chimney 2. Since it is performed by using the columns 3 to be formed, it is possible to use the columns 3 formed of reinforced concrete, an iron pipe, or the like in a form adapted to support the blower F, so that the manufacturing cost can be reduced and the column can be made strong. Like Then, the burner device 1 is mounted and supported on the upper end side of the support column 3 through the mounting bracket 4 so as to be adjustable up and down,
Since the upper end side of the chimney 2 connected to the furnace 11 thereof may be located immediately below the blower F mounted and supported on the upper end portion of the support column 3, the hot air generated by the burner device 1 is remarkably thermally efficient. The blower F can be supplied in good condition.

[0009]

Embodiments Next, embodiments will be described in detail with reference to the drawings. Note that the same reference numerals are used for the constituent members having the same effects as those of the conventional means.

FIG. 2 is a schematic view of the whole apparatus of the embodiment of the present invention. In FIG. 2, 3 is a pillar, F is a blower, 1 is a burner device, 4 is a mounting bracket, 5 is a fuel tank, and 6 is a blower. Shows an oil pump.

The pillar 3 has a diameter of about 1 in this example.
It is a steel pipe column with a length of 30 mm of about 8 to 9 m, which is erected at a predetermined place in a field through a base 30 and a support 31 ..., and about 10 scaffold bolts 32 are provided on the peripheral surface.
... are installed at appropriate intervals above and below.

The blower F is of a low noise and large air volume type, and as shown in FIG. 3, it swings left and right on the upper surface of an assembling table 70 which is assembled and fixed to the upper end portion of the column 3. A base 71 is provided, and a bracket 73 for adjusting the depression angle is automatically or automatically changed by a vertical rotation of a pivot 72 in the lateral direction, and a bracket 73 is provided on the output shaft of the motor M. It is formed by assembling the blower main body 7 to which 74 ... Are attached.

As shown in FIG. 4, the burner device 1 is of a form in which a gun-type burner body 10 is combined with a furnace 11 and hot air is taken out from a discharge port 20 of a chimney 2 connected to the furnace 11. The burner main body 10, the furnace 11 and the chimney 2 are surrounded by a cover 12 which also serves as a supporting machine frame of the burner main body 10, and a support 3 mounted on the outer surface of the cover 12 to support the pillar 3
It is assembled and erected on.

The burner body 10 atomizes the fuel oil, which is supplied through the oil supply pipe 13 and is ejected from the nozzle, by the fan and ejects it from the ejection cylinder 14, which is ignited and burned by a discharge type ignition rod and ejected. Although it is a normal gun type burner, it is not a suction type in which fuel oil is sucked by a suction pump provided on the burner body 10 side and discharged from a nozzle, but a pressure-feed type oil delivery pump provided on the fuel tank 5 side. 6, the fuel oil pressure-fed through the oil feed pipe 13 is ejected from the nozzle.

This is because the burner device 1 is separated from the fuel tank 5 and supported at a high position of the column 3 to lengthen the pumping stroke, so that the suction pipe provided on the burner body 10 side causes the oil feed pipe 13 to move. This is because air is generated in the oil feed pipe 13 and the oil cannot be smoothly fed, resulting in a misfire.

The fuel tank 5 is separated from the burner body 10 and the mounting brackets 50, 50 provided on the outer surface of the tank 5 are attached to the lower end side of the support column 3 to support the support column 3. It is assembled and erected on. The bracket of the oil feed pump 6 is attached to the outer surface of the fuel tank 5.

The cover 12 which encloses the burner body 10 and the furnace 11 of the burner device 1 has an intake port 120 for taking in air on the lower surface side of the cover 12 and an upper surface side of the chimney 2 which surrounds the chimney 2. A cap-shaped diffuser 122 is connected to the upper end side of the outer cylinder 121 surrounding the outer cylinder 121. Then, as a result, combustion is performed in the furnace 11 of the burner device 1 and the discharge port 20 of the chimney 2 is discharged.
The hot air discharged from the cover 12 is sucked from the intake port 120 on the bottom surface of the cover 12 and flows through the cover 12 so as to be blown out from the open port on the upper end side of the outer cylinder 121, thereby exchanging heat with the peripheral surfaces of the furnace 11 and the chimney 2. Mix the outside air heated by
A cap-shaped diffuser 12 attached to the upper end of the outer cylinder 121.
2 and is blown out to the surroundings from an outlet 123 provided in the diffuser 122.

Intake port 12 provided on the bottom surface of this cover 12
0 and an opening on the upper end side of the outer cylinder 121 that surrounds the chimney 2 and a cap-shaped diffuser 122 that can be connected to the upper end side of the outer cylinder 121. A net 124 ... Is provided to prevent making. This bird-proof net 124 ... is the cover 12
Be provided in all of the openings to the outside of the.

Further, the burner device 1 includes the mounting bracket 4
By turning the column 3 to the center of the column 3,
The displacement of the column 3 is adjustable in the circumferential direction.
By adjusting the displacement of the support column 3 in the circumferential direction, as shown in FIG. 5, the diffuser 122, which is substantially the discharge port 20 of hot air, moves in the blowing direction of the blower F supported on the upper end of the support column 3. In some cases, the column 3 may be supported so as to occupy the rear position.

The mounting metal fitting 4 mounted on the outer periphery of the cover 12 is formed in a cylindrical shape so as to be vertically slidably fitted on the outer periphery of the support column 3 and has a tightening screw at a desired height position. The burner device 1 can be fixed at the desired height position by tightening 40 ... The hot air generated by the burner device 1 becomes a hot air of a temperature that does not damage the blower F and its motor M, and is supplied to the blower device F so that the blower device F is substantially fed to the burner device 1. The distance between the diffuser 122 and the hot air discharge port can be adjusted.

To adjust the distance between the blower F and the diffuser 122, which is the substantial hot air outlet of the burner device 1, the burner device 1 is fixedly mounted on the column 3, and the burner device 1 is fixed. Chimney 2 connected to the furnace 11
Also, the outer cylinder 121 of the cover 12 that surrounds the outer periphery of the outer cylinder 121 is formed to expand and contract in the vertical direction, and by adjusting the expansion and contraction of the outer cylinder 121, the diffuser 122 supported on the upper end of the outer cylinder 121 is
It may be performed by displacing the fan F up and down.

Reference numeral 8 denotes a control panel for operating and controlling the depression angle adjusting mechanism and the swinging mechanism of the blower F, the motor M of the blower F, the burner device 1 and the oil feed pump 6, and is attached to the lower end of the column 3. It is suspended.

Further, S is a temperature sensor for controlling the blower F and the burner device 1 to automatically operate when the temperature drops to a temperature at which frost may be generated. It is installed by arranging it in the part to approach.

[0024]

As described above, the frost damage prevention device according to the present invention includes the burner device 1 for supplying hot air to the blower F supported on the upper end of the pillar 3 which is erected high in the field. Since the pillar 3 that supports the blower F is used to support the fan F at a high position close to the blower F, the distance between the hot air generation position of the burner device 1 and the fan F that is supported at the upper end of the pillar 3 is Since they come close to each other, the hot air generated by the burner device 1 can be fed to the blower F in a state where there is almost no heat loss, and a frost damage prevention device with high thermal efficiency can be obtained.

Further, the hot air generated by the burner device 1 is adjusted by changing the mounting position of the burner device 1 with respect to the column 3 or by adjusting the vertical displacement of the hot air discharge port 20 of the burner device 1 to blower F and its motor. The blower F can be moved closer to the blower F by adjusting it so as not to damage it.

Further, the fuel tank 5 is formed as a separate body and is arranged below the burner device 1, and the oil pump 6 of the pressure feeding type is provided.
When the fuel oil is supplied to the burner device 1 by the oil supply pipe 13 and the oil supply pipe 13, the fuel oil can be easily replenished to the fuel tank 5, and the oil supply to the burner device 1 can be smoothly performed. It becomes possible to prevent a misfire due to the inclusion of air.

[Brief description of drawings]

FIG. 1 is a front view of a conventional frost damage prevention device in use.

FIG. 2 is a schematic front view of the entire frost damage prevention device according to the present invention in a use state.

FIG. 3 is a perspective view showing a state in which the blower of the above-mentioned frost damage prevention device is assembled and supported on the upper end portion of a column of a blower.

FIG. 4 is a partially cutaway front view of the burner device of the above-mentioned frost damage prevention device in a state where the burner device is assembled and supported by a column.

FIG. 5 is a perspective view of an example in which the above-described frost damage prevention device is changed in the assembling state with respect to the upper end portion of the column.

[Explanation of symbols]

F ... Blower, GL ... Ground surface, M ... Motor, W ... Cold air layer, Y ... Warm air layer, S ... Temperature sensor, 1 ... Burner device,
10 ... Burner body, 11 ... Furnace, 12 ... Cover, 13
... Oil supply pipe, 14 ... Discharge cylinder, 120 ... Intake port, 121 ... Outer cylinder, 122 ... Diffuser, 123 ... Air outlet, 124 ... Net, 2 ... Chimney, 20 ... Discharge port, 3 ... Strut, 30 ... Base, 31 ... Support, 32 ... Scaffolding bolt, 4 ... Mounting bracket, 40 ... Tightening screw, 5 ... Fuel tank, 50 ... Mounting bracket, 6 ... Oil pump, 7 ... Blower body, 70 ... Assembly base,
71 ... Revolving base, 72 ... Axis, 73 ... Bracket, 74 ...
Airfoil, 8 ... Control panel.

Claims (7)

[Claims] 1. An upper end portion of a pillar 3 which is erected high in a field,
The blower F, which is operated by energizing the motor M, is installed and supported so that the blowing direction of the blower F faces the ground surface GL, and the burner device 1 for generating hot air is closely arranged below the blower F. An apparatus for preventing frost damage, characterized in that it is assembled and supported on the column 3. 2. At the upper end of the pillar 3 which is erected high in the field,
The blower F, which is operated by energizing the motor M, is installed and supported so that the blowing direction of the blower F faces the ground surface GL, and the burner device 1 for generating hot air is closely arranged below the blower F. The frost damage prevention device is characterized in that it is assembled and supported on the support column 3 and the hot air discharge port 20 thereof is arranged at a rear position in the blowing direction of the blower F supported on the upper end of the support column 3. 3. The displacement of the hot air discharge port 20 of the burner device 1 supported on the support column 3 can be adjusted vertically with respect to the blower F supported on the upper end of the support column 3. Frost damage prevention device. 4. A burner device 1 for generating hot air is supported on a supporting column 3 via a mounting bracket 4, and the mounting bracket 4 is mounted on the supporting column 3.
The frost damage prevention apparatus according to claim 1, wherein the frost damage prevention apparatus is attached to the upper and lower parts so that the vertical displacement can be adjusted. 5. The frost damage prevention according to claim 1, wherein the burner device 1 for generating hot air is supported on the column 3 via a mounting member 4 so that the circumferential displacement of the column 3 can be adjusted. apparatus. 6. An intake air which encloses the outer periphery of a burner body 10 and a furnace 11 and a chimney 2 connected to the furnace 11 of a burner device 1 for generating hot air with a cover 12, and the outside air flows into the bottom surface side of the cover 12. The mouth 120 is opened, and the portion of the cover 12 that surrounds the chimney 2 is the outer cylinder 12
1, the outside air heated by the heat exchange with the furnace 11 and the peripheral surface of the chimney 2 flows through the inside of the cover 12 and joins and mixes with the heat generated by the burner device 1. The frost damage prevention device according to claim 1, which is characterized. 7. The upper end of the pillar 3 which is erected high in the field,
The blower F, which is operated by energizing the motor M, is installed and supported so that the blowing direction of the blower F faces the ground surface GL, and the burner device 1 for generating hot air is closely arranged below the blower F. Is installed and supported on the support column 3, a fuel tank 5 formed separately is disposed below the burner device 1, and a fuel is fed to the burner device 1 via an oil feed pipe 13 by a pressure feed type oil feed pump 6. A frost damage prevention device characterized by supplying oil.