JP2009174820A - Greenhouse horticulture hot air heater - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an up-flow type greenhouse horticulture hot air heater for solving problems with the arrangement of an air duct. <P>SOLUTION: To the upper part of a casing 2, a cylindrical base with a flange 13 is fixed in communication with the inside and outside of the casing. An air outlet body 14 forming a horizontal hot air outlet 12 is supported on the base in a peripherally swingable manner by a plurality of guide rings 15 to be guided on the upper face of the flange in the peripheral direction. On the upper part of the casing 2, a driving motor 20 is mounted at a position a predetermined distance from a trunk portion 14b of the air outlet body 14 for driving a belt means 18 wound on the trunk portion 14b of the air outlet body 14. With the operation of clockwise and counterclockwise limit switches arranged at two positions along the peripheral direction of the air outlet body, an oscillating control means controls the reverse oscillating motion of the air outlet body. A swing blade 30 is arranged in the air outlet 12 for vertical swinging motion in linkage with the oscillating motion of the air outlet body. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention heat-exchanges the air sucked from the air suction port provided in the lower part of the casing with the combustion gas generated in the furnace, and discharges the generated hot air into the house from the hot air discharge port in the upper part of the casing. The facility relates to a hot air heater for horticulture.

  Conventional hot air heaters used for facility gardening are generally classified into a downflow type (with hot air blowing down) and an upflow type (with hot air blowing up). In the down flow type, a vinyl air duct that extends from the lower outlet of the heater is placed on the ground, and hot air is blown into the house from the air outlet of the air duct. Used for warming high-quality items (mandarin orange, kumquat, etc.). Patent Document 1 shows an example of a downflow type structure. On the other hand, the upflow type hangs a vinyl air duct that extends from the upper discharge port of the heater at the top of the house, blows down the warm air from the air outlet of the air duct into the house, Used to heat relatively short items such as flower buds (such as buds and chrysanthemums).

JP-A-5-133610

  In the above upflow type, (1) Since a plurality of air ducts are arranged above the producer, the air ducts hinder the work in the house. (2) When the air is not blown, the ducts hang down. (3) The hanging duct hinders the spraying of medicine and ventilation in the house, (4) The exhaustion of the duct is early, (5) The temperature balance in the house tends to be unbalanced (the upper part of the house) There was a problem such as temperature build-up), and there was a strong demand for improvement.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a warm air heater for facility horticulture that can solve various problems associated with the arrangement of the air duct in the upflow type.

In order to solve the above problems, a hot air heater for facility horticulture of claim 1 according to the present invention is provided.
A furnace and a number of smoke pipes are arranged inside the casing, an air suction port and a hot air discharge part are provided at the lower part of the casing, and a blower is attached to the air suction port. In the facility horticulture hot air heater that formed a heat exchange part around a large number of smoke tubes,
A cylindrical flanged base communicating with the inside and outside of the casing is fixed to the upper part of the casing, and a discharge port body that communicates with the inside and outside of the casing and forms a hot air discharge port sideways is formed around the flange top surface. Supported in a circumferential direction by a plurality of guide wheels guided in the direction,
At the top of the casing, a drive motor that drives the belt or chain means wound around the body of the discharge port body is attached at a position away from the body of the discharge port body by a predetermined distance,
Provided with swing control means for reversing and controlling the swing motion of the discharge port body by the action of the clockwise and counterclockwise limit switches arranged at two locations along the circumferential direction of the discharge port body;
A swing blade that swings up and down around a horizontal axis in conjunction with the swinging motion of the discharge port body is disposed in the discharge port.

  According to the hot air heater for facility horticulture according to claim 1, the temperature in the horizontal direction can be increased by swinging the discharge outlet main body within a predetermined range by means such as a drive motor, belt or chain means, limit switch or the like. The direction of the wind discharge direction changes periodically, and warm air can be sent evenly from the side to the back of the house, and the temperature balance in the house is balanced. In addition, the air duct can be eliminated, and various problems associated with the air duct are eliminated. Furthermore, in the case of the upflow type, heat tends to accumulate in the upper part of the house and a temperature difference occurs between the upper part and the lower part, but the swing blade in the discharge port swings up and down in conjunction with the swinging motion of the discharge port body. Thus, the temperature difference between the upper and lower sides in the house is also averaged, and the overall temperature balance in the house is further balanced by these synergistic effects.

  Since the drive motor is mounted at a position away from the trunk portion of the discharge port body by a predetermined distance, there is little thermal influence on the drive motor from the trunk portion of the discharge port body during hot air discharge, and the durability of the drive motor is improved.

  The facility horticultural warm air heater according to claim 2 according to the present invention is configured such that the swing operation of the swing blade is performed by a link mechanism that is operated by a single guide wheel that reciprocally guides the upper surface of the flange of the flanged base. It is characterized by that.

  According to the warm air heater of the second aspect, it is possible to swing the swing blade by using the driving force from the driving motor as it is by the action of the guide wheel and the link mechanism.

  According to a third aspect of the present invention, there is provided a warm air heater for horticultural horticulture, wherein the link mechanism includes a rotating plate coaxially attached to the one guide wheel, and a connecting end of one rod on the periphery of the rotating plate. The connecting end of the other rod is connected to the rear end of the swing blade, and the universal joint is connected to each other.

  According to the facility horticultural warm air heater of the third aspect of the present invention, it is possible to smoothly convert the swing motion of the discharge port body into the swing motion of the swing blade using the universal joint mechanism.

  The facility horticultural warm air heater according to claim 4 of the present invention is characterized in that a plurality of guide wheels are arranged between the outer peripheral surface of the flanged base and the inner peripheral surface of the discharge port body.

  According to the hot air heater of claim 4, the swinging motion of the discharge port body is smoother by disposing a plurality of guide wheels between the outer peripheral surface of the base and the inner peripheral surface of the discharge port body. It becomes.

  The hot air heater for facility horticulture according to claim 5 of the present invention is characterized in that one of the guide wheels is disposed 180 degrees opposite to the drive motor of the swinging central axis of the discharge port body. To do.

  According to the hot air heater of claim 5, by disposing one of the guide wheels on the side of the swinging central axis of the discharge port main body 180 degrees opposite to the drive motor, the neck of the discharge port main body is arranged. The swing motion becomes even smoother.

  The hot air heater for facility horticulture according to claim 6 of the present invention is characterized in that two limit switches for clockwise rotation and counterclockwise rotation are provided for stopping and overrun.

  As described above, according to the facility horticultural hot air heater according to the present invention, the hot air discharged from the hot air discharge port by the swing blade that swings up and down in conjunction with the swing motion of the discharge port body. The discharge direction is repeatedly changed in the vertical direction, whereby the vertical temperature in the house is uniformly averaged over the entire area, and the overall temperature balance in the house can be balanced.

  In addition, since the belt or chain means driven by the drive motor is wound around the body of the discharge port body during the swinging movement of the discharge port body, the discharge port body is swung stably and smoothly. In addition, by mounting the drive motor at a predetermined distance from the body of the discharge port body, even if the temperature of the body of the discharge port body rises during hot air discharge, the thermal effect on the drive motor And there is an effect that the durability of the drive motor can be improved.

  The best mode for carrying out the present invention will be described with reference to FIGS. In these drawings, reference numeral 1 denotes a hot air heater for facility horticulture, and 2 denotes a casing.

  The basic structure of the facility horticulture hot air heater 1 will be described. As shown in FIGS. 1 and 2, the casing 2 has a horizontally long sealed shape. The furnace 3 is accommodated in the front part, and a large number of smoke pipes 4 communicating with the furnace 3 are accommodated in the rear part, leaving the space S therebetween. The furnace 3 is equipped with a burner 5, and the smoke pipe 4 projects rearward of the casing 2 and communicates with a chimney 6 extending upward. An air suction port 7 is provided in the lower part of the casing 2 directly below the numerous smoke pipes 4, and a hot air discharge part 8 is provided in the upper part of the casing 2 and immediately above the furnace 3. An intake fan (blower) 9 is attached to the air inlet 7. A control panel 10 that controls combustion of the burner 5 is provided near the burner 5.

  According to the warm air heater 1 having the above structure, when the intake fan 9 at the lower part of the casing 2 is turned to take air into the casing 2 and the burner 5 is ignited to generate a flame in the furnace 3, The combustion gas is exhausted through the smoke pipe 4 and the chimney 6, while heat is exchanged with the air taken into the casing 2 in the heat exchange section 11 (space S) around the smoke pipe 4 and the furnace 3. Hot air is discharged into the house from the hot air discharge port 12 of the hot air discharge part 8 at the upper part of the casing 2 and is used for heating for the house.

  As shown in FIG. 3, a cylindrical flanged base 13 that communicates with the inside and outside of the casing 2 and forms an air passage 13 a is fixed to the upper portion of the casing 2. An air passage 14a that communicates with the air passage 13a is formed on the flanged base 13, and a discharge port body 14 that forms a hot air discharge port 12 in a lateral direction is covered from the top to the outside. 14, a total of three guide wheels 15 supported on the inner peripheral surface of the base 13 with flange at the three circumferential positions downward at equal intervals through mounting members 15 a are placed on the upper surface of the flange 13 b at the upper end of the flanged base 13. Thus, the base 13 is supported.

  Further, the discharge port body 14 is provided at three locations in the circumferential direction via the three vertical guide wheels 15 guided in the circumferential direction on the upper surface of the flange 13b and the outer peripheral surface 13c of the base 13 via attachment members 16a. With three total guide wheels 16 that are supported outwardly (laterally) at equal intervals and guided in the circumferential direction on the inner peripheral surface 14a of the discharge outlet body 14, the head can be smoothly swung without rattling. It is said that.

  A driving motor (driving means) 20 that drives a V-belt (belt means) 18 wound around the V-shaped groove 17 of the body portion 14 b of the discharge outlet main body 14 via a pulley 19 is disposed at the upper part of the casing 2. The outlet body 14 is attached at a position separated from the trunk portion 14b by a predetermined distance L. A chain may be used in place of the V belt 18.

  In the upper part of the casing 2, limit switches 21 and 22 are disposed in the vicinity of the body portion 14 b of the discharge port body 14 and are used to reverse the rotating discharge port body 14 clockwise and counterclockwise. Arranged at intervals. Kick plates 23 and 24 for operating the limit switches 21 and 22 are attached to the body portion 14b of the discharge port body 14. As shown in FIG. 4, one limit switch 21 is configured such that the pressing portion 21 </ b> A is kicked when the discharge port main body 14 rotating counterclockwise reaches a predetermined angle (for example, 45 degrees) from the reference position O. 23, the discharge port body 14 is operated by being pressed, and the other limit switch 22 is configured such that, as shown in FIG. 5, the discharge port body 14 for turning clockwise is a predetermined angle (for example, from the reference position O). When the angle reaches 45 degrees, the pressing portion 22A is pressed by the kick plate 24 to operate, and the discharge port main body 14 is stopped.

  The drive motor 20 is configured to be driven reversely and reversely by the control of the timer mechanism, the drive is stopped by the operation of the limit switches 21 and 22, and the drive is restarted (in the reverse direction) after the set time of the timer elapses. The discharge port body 14 is rotated in the reverse direction. With these functions, the discharge port main body 14 is positioned at a predetermined angle counterclockwise from the reference position O as shown in FIG. 4, and at a predetermined angle clockwise from the reference position O as shown in FIG. Swing motion is possible within the range. Here, the limit switches 21 and 22, the kick plates 23 and 24, and the timer mechanism constitute swing control means for performing reverse control of the swing motion of the discharge port body 14. Further, the swing angle of the discharge port main body 14 can be changed as appropriate by changing the positions of the kick plates 23 and 24.

  Although not shown, an overrun limit switch is arranged in the vicinity of the limit switches 21 and 22 as a safety device, and the overrun limit switch is operated on the body portion 14b of the discharge port main body 14, respectively. It is possible to attach a kick plate for making it optional.

  A swing blade 30 that swings up and down around a horizontal axis 29 at the front end is arranged in the warm air outlet 12 of the outlet body 14 in conjunction with the swinging motion of the outlet body 14. The swing operation of the swing blade 30 is performed by a link mechanism 31 that is operated with one guide wheel 15 ′ reciprocally guided on the upper surface of the flange 13 b of the base 13 as a drive wheel.

  The link mechanism 31 includes a rotating plate 32 that is coaxially attached to the guide wheel 15 ′ by a connecting shaft 32 a, and a connecting end of one rod 33 via a connecting pin 33 b at a part of the peripheral edge of the rotating plate 32. A universal joint 35 is connected to the rear end a of the swing wing 30 and the connection end 34a of the other rod 34 is slidably coupled within the slide hole 30b.

  The universal joint 35 functions to convert the rotational movement of the rotating plate 32 accompanying the reciprocating motion of the guide wheel 15 'into the up and down swing motion of the swing blade 30, and as shown in FIG. With the movement, when the connecting end 33a of the universal joint 35 comes to the top dead center of the rotating plate 32, the rear end of the swing blade 30 faces upward, and the connecting end 33a of the universal joint 35 comes to the bottom dead center of the rotating plate 32. Sometimes the swing blade 30 swings up and down by the rear end of the swing blade 30 facing downward.

  As shown in FIG. 7, a plurality of rectifying vertical grids 36 for rectifying the hot air discharged from the hot air outlet 12 are attached to the inside of the hot air outlet 12 at equal intervals. In order to avoid interference with each rectifying vertical grid 36, a plurality of slits 30 c are formed at the front end of the swing blade 30 to accommodate the respective rectifying vertical grids 36 in the vertical direction.

  Next, heating in a house using the hot air heater 1 for facility horticulture configured as described above will be described below.

  High-temperature combustion generated in the furnace 3 by operating the intake fan 9 of the hot air heater 1 for horticultural horticulture installed in the house and taking air in the house into the casing 2 and igniting the burner 5 Heat exchange is performed between the gas and the heat exchanging unit 11, and the generated hot air is discharged from the hot air discharge port 12 of the hot air discharge unit 8 into the house. The warm air of about 50 to 60 ° C. generated in the casing 2 passes through the air passage 13a of the flanged base 13 and the air passage 14a of the discharge port main body 14, and is rectified by each rectifying vertical grid 16. It is discharged into the house.

  The V-belt 18 is driven by a drive motor 20 that is timer-controlled in synchronism with the operation of the hot air heater 1, and the discharge switch body 14 is moved by operating the limit switches 21 and 22 together with FIGS. As shown in FIG. 5, the head is swung within a predetermined angle range (90 degrees in the illustrated example), the horizontal direction of the hot air discharged from the hot air discharge port 12 is changed, and the air is applied from the side in the house to the back. Try to send warm air evenly.

  Since the discharge port main body 14 is rotated by the rubber V-shaped belt 18, the movement behavior of the discharge port main body 14 during rotation is absorbed by the V-shaped belt 18, and stable without causing the discharge port main body 14 to rattle. Can be swung. Further, since the drive motor 20 can be attached at a position away from the outer surface of the discharge port body 14, thermal deterioration of the drive motor 20 can be prevented and durability can be improved. In addition, since the outer surface of the discharge outlet main body 14 rises to 50 to 60 ° C. when discharging hot air, there is a concern that the drive motor 20 may be thermally deteriorated in the case of direct drive. Furthermore, the adoption of the V-shaped belt 18 reduces the drive noise and facilitates maintenance such as replacement.

  Since the swing blade 30 in the warm air discharge port 12 is caused to swing up and down by the link mechanism 31 interlocked with the swinging motion of the discharge port main body 14, the discharge direction of the warm air from the warm air discharge port 12 is Periodically, upward and downward are repeated to form up-down convection in the air in the house, and the air in the house is evenly stirred. In the case of the upflow type, the discharged hot air tends to accumulate in the upper part of the house, and therefore the upper part has a high temperature and the lower part has a low temperature distribution. In combination with the fact that the temperature difference at the planar position in the house is averaged by the swinging movement of the discharge port body 14, the temperature in the house is leveled as a whole and three-dimensionally.

  By using said warm air heater 1, heating efficiency improves and, as a result, heavy oil usage-amount can be reduced. As a result, it is possible to reduce heating costs, and in turn reduce production costs for facility vegetables, flowers, fruit trees, and the like.

  The hot air heater 1 described above is mainly used for heating the house, but when the inside of the house is irradiated with the sun and the temperature in the house rises in the summer, it is used for stirring and ventilating the air in the house. Can also be used. Stirring and ventilation of the air in the house can be promoted by the swing motion of the discharge port body 14 and the vertical swing motion of the swing blade 30.

  The facility horticultural hot air heater according to the present invention is widely used not only for warm air heaters that supply hot air to the facility horticulture house to heat the house, but also for agitation and ventilation of the air in the house. be able to.

The side view which shows the external appearance of the warm air heater for facilities gardening which concerns on this invention, Sectional drawing of the hot air heater for facility horticulture shown in FIG. FIG. 1 is a cross-sectional view of a main part showing a hot air discharge part of the hot air heater for horticulture in FIG. The principal part top view which shows the swing motion of the same warm air discharge part, The principal part top view which shows the swing motion of the same warm air discharge part, Explanatory drawing of the link mechanism for swinging the swing wing up and down, It is a front view of a warm air discharge part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Warm air heater 2 for horticultural horticulture 2 Casing 3 Furnace 4 Smoke pipe 5 Burner 6 Chimney 7 Air inlet 8 Hot air discharge part 9 Intake fan (blower)
DESCRIPTION OF SYMBOLS 10 Control board 11 Heat exchange part 12 Hot air discharge port 13 Base 13a, 14a with a flange Air passage 13b Flange 14 Discharge port main body 14a Inner peripheral surface 14b of discharge port main body Body 15, 15 of discharge port main body Guide wheel 15a, 16a Mounting member 17 V-shaped groove 18 V belt (belt means)
19 Pulley 20 Drive motors 21 and 22 Limit switches 21A and 22A Press parts 23 and 24 Kick plate 29 Horizontal shaft 30 Swing blade 30a Slit 31 Link mechanism 32 Rotating plate 33 and 34 Rod 33a and 34a Connection end 33b Connection pin 35 Universal joint 36 Rectifying vertical grid

Claims (6)

A furnace and a large number of smoke pipes are arranged inside the casing, an air suction port is provided at the lower part of the casing, and a hot air discharge unit is provided at the upper part. And in the facility horticulture hot air heater in which a heat exchanging part is formed around many smoke pipes,
A cylindrical flanged base communicating with the inside and outside of the casing is fixed to the upper part of the casing, and a discharge port body that communicates with the inside and outside of the casing to form a hot air discharge port laterally with respect to the flanged base surrounds the upper surface of the flange. Supported by a plurality of guide wheels guided in the direction so as to be able to swing in the horizontal direction,
A drive motor that drives a belt or chain means wound around the trunk portion of the discharge port main body is attached to the upper portion of the casing at a position away from the trunk portion of the discharge port main body,
Swing control means for reversely controlling the swing motion of the discharge port body by the operation of the clockwise and counterclockwise limit switches disposed at two locations along the circumferential direction of the discharge port body is provided,
A warm air heater for horticultural horticulture, characterized in that a swing blade that swings up and down around a horizontal axis in conjunction with a swinging motion of the discharge outlet body is disposed in the discharge outlet.   The hot air heater for facility horticulture according to claim 1, wherein the swing operation of the swing blade is performed by a link mechanism that is operated by a single guide wheel that reciprocally guides the upper surface of the flange of the flanged base. .   The link mechanism includes a rotating plate coaxially attached to the one guide wheel, a connecting end of one rod at the periphery of the rotating plate, and a connecting end of the other rod at the rear end of the swing blade. The hot air heater for facility horticulture according to claim 2, characterized in that it is composed of a connected universal joint.   The facility horticulture according to any one of claims 1 to 3, wherein a plurality of guide wheels are arranged between the outer peripheral surface of the flanged base and the inner peripheral surface of the discharge port body. Hot air heater for use.   5. The facility horticulture hot air heater according to claim 4, wherein one of the guide wheels is disposed 180 degrees opposite to the driving means of the swing center axis of the discharge outlet main body.   6. The facility horticultural hot air heater according to claim 1, wherein two limit switches for clockwise rotation and counterclockwise rotation are provided for stopping and overrun. .

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