Blower device of a speed sprayer

Abstract

To equalize and improve efficiency of chemical liquid spraying by enhancing a chemical liquid spraying capability (wind speed) to the upper side, improve fuel consumption and improve noise.SOLUTION: An air blower of a speed sprayer comprises: a moving blade part 2 in which a plurality of moving blades 2p ... are provided in a radiation direction Fr at a prescribed interval along a peripheral direction Ff; a rotation drive part 3 which rotates the moving blade part 2; a stationary blade part 4 in which a plurality of stationary blades 4p ... are provided in the radiation direction at a prescribed interval along the peripheral direction Ff and which is fixedly arranged on the front side in the air blowing direction Fw by the moving blade part 2; and a rectification part 5 which is arranged on the front side in the air blowing direction Fw of the stationary blade part 4 and has rectification cylinders 5i, 5o that rectify the air blow W from the stationary blade part 4 in the radiation direction Fr. Air blow guide parts 6id, 6od which guide the air blow W flowing out from the stationary blade part 4 to the upper side Fu are provided in lower parts 5id, 5od of the rectification cylinders 5i, 5o in the rectification part 5.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a blower device for a speed sprayer provided with a rectifying section having at least one rectifying cylinder for rectifying the blowing direction.

Background Art

[0002] Generally, a speed sprayer for spraying a chemical solution on fruit trees in a field is known. This type of speed sprayer usually includes a rotor blade section provided with a plurality of radial rotor blades at predetermined intervals along the circumferential direction, a rotational drive section for rotating the rotor blade section, a stator blade section provided with a plurality of radial stator blades at predetermined intervals along the circumferential direction and fixed in front of the blowing direction by the rotor blade section, and a rectifying section having a rectifying cylinder disposed in front of the blowing direction of the stator blade section and rectifying the blowing from the stator blade section in the radial direction. The chemical solution sprayed from a plurality of injection nozzles facing the rectifying section is sprayed (atomized) in the radial direction.

[0003] Conventionally, as such a blower device, a blower device for a speed sprayer described in Patent Document 1 proposed by the present applicant and a blower mechanism for a speed sprayer described in Patent Document 2 are already known. The blower device described in Document 1 aims to avoid negative factors such as ensuring a noise reduction effect, causing an impact on the rectifying effect, and increasing the overall size. Specifically, it includes a rotor blade section provided with a plurality of radial rotor blades, a rotational drive section for rotating the rotor blade section, a stator blade section provided with a plurality of radial stator blades and fixed in front of the blowing direction by the rotor blade section, and a rectifying section disposed in front of the blowing direction of the stator blade section and rectifying the blowing from the stator blade section in the spraying direction. The blower device of the speed sprayer sprays the chemical solution sprayed from a plurality of injection nozzles facing the rectifying section in the spraying direction, and has a configuration in which a ridge portion having a zigzag shape is provided on the surface of at least some of the stator blades among the plurality of stator blades along the radial direction.

[0004] In addition, the blower mechanism described in the same Document 2 aims to achieve stabilization of air blowing, improvement of air blowing efficiency (air volume), prevention of unnecessary scattering near the vehicle, etc., and to enable easy optimization of the rectification of the air blowing by the blower mechanism. Specifically, it includes a rotor blade part provided with a plurality of rotor blades in the radial direction, a rotational drive part for rotating this rotor blade part, a stator blade part provided with a plurality of stator blades in the radial direction and fixed and arranged in front of the air blowing direction by the rotor blade part, and a discharge part arranged in front of the air blowing direction of this stator blade part and rectifying the air blowing from the rotor blade part in the radial direction. It constitutes the blower mechanism of a speed sprayer that sprays the chemical liquid discharged from a plurality of spray nozzles facing this discharge part in the radial direction, and the circumferential angle with respect to the radial axis in at least a part of the plurality of stator blades is set in the range of 40 ± 20° with respect to the front-rear direction of the speed sprayer.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0006] However, the conventional blower device in the above-described speed sprayer also had the following problems to be solved.

[0007] That is, in this type of speed sprayer, usually, in order to avoid unnecessary air blowing downward, a blocking plate (reference numeral 81 in FIG. 1) for blocking the air blowing downward is arranged. However, the blocked air blowing downward is discharged in the radial direction other than downward, particularly in the left-right direction like the air blowing Wr shown by the virtual line in FIG. 6, and there was a problem that the wind speed (air volume) in the left-right direction based on the air blowing Wr increased.

[0008] As countermeasures, conventionally, measures such as setting the angle of the stationary blade in the stationary blade section to an appropriate angle or increasing the rotational speed of the rotational drive section that rotates the moving blade section have been taken, but there have been problems that cannot necessarily be said to be sufficient. In particular, from the viewpoint of optimizing the air volume (wind speed) and the spraying area in the radial direction and enhancing the spraying ability upward so as to spray with a margin up to the vicinity of the upper end of fruit trees and the like, and further from the viewpoints of improving the efficiency of chemical liquid spraying, improving fuel consumption, and improving noise, there have still been points to be further improved.

[0009] An object of the present invention is to provide a blower device for a speed sprayer that solves the problems existing in such background art.

Means for Solving the Problems

[0010] In order to solve the above-described problems, the present invention provides a rotor blade section 2 provided with a plurality of rotor blades 2p... in the radial direction Fr at predetermined intervals along the circumferential direction Ff, a rotational drive section 3 for rotating the rotor blade section 2, a plurality of stator blades 4p... in the radial direction provided at predetermined intervals along the circumferential direction Ff, and a stator blade section 4 fixedly disposed in front of the air blowing direction Fw by the rotor blade section 2, and a rectifying section 5 disposed in front of the air blowing direction Fw of the stator blade section 4 and having at least one rectifying cylinder 5i, 5o for rectifying the air blowing W from the stator blade section 4 in the radial direction Fr. When configuring the air blower 1 of the speed sprayer M that sprays the chemical liquid sprayed from a plurality of injection nozzles N... facing the rectifying section 5 in the radial direction Fr, a curved inner rectifying cylinder 5i that guides the air blowing W from the stator blade section 4 in the radial direction Fr, and a rectifying section 5 having a curved outer rectifying cylinder 5o located outside the inner rectifying cylinder 5i in the radial direction Fr and guiding the air blowing W from the stator blade section 4 in the radial direction Fr are provided. At the lower part 5id of the inner rectifying cylinder 5i, a blowing air guiding section 6id having a pair of left and right inner side regulating sections 6idp, 6idq that guide the air blowing W from the stator blade section 4 upward and are bent at the left and right edge positions to regulate the air blowing W in the left and right directions is provided, or at the lower part 5od of the outer rectifying cylinder 5o, a blowing air guiding section 6od having a pair of left and right outer side regulating sections 6odp, 6odq that guide the air blowing W from the stator blade section 4 upward and are bent at the left and right edge positions to regulate the air blowing W in the left and right directions is provided, which is a feature of the present invention.

[0011] Further, according to a preferred embodiment of the present invention, when providing the blowing air guiding section 6id having the inner side regulating sections 6idp, 6idq, the blowing air guiding section 6od can be provided at the lower part 5od of the outer rectifying cylinder 5o, and a pair of left and right outer side regulating sections 6odp, 6odq bent to regulate the air blowing W (Wr) in the left and right directions can be provided at the left and right edge positions. Also, when providing the blowing air guiding section 6od having the outer side regulating sections 6odp, 6odq, the blowing air guiding section 6id can be provided at the lower part 5id of the inner rectifying cylinder 5i, and a pair of left and right inner side regulating sections 6idp, 6idq bent to regulate the air blowing W (Wr) in the left and right directions can be provided at the left and right edge positions.

Effects of the Invention

[0012] According to the blower 1 of the speed sprayer M according to the present invention having such a configuration, the following remarkable effects are achieved.

[0013] (1) By the air flow guiding portions 6id and 6od provided at the lower portions 5id and 5od of the straightening cylinders 5i and 5o in the straightening portion 5, the air flow W flowing out from the stator blade portion 4, particularly the lower air flow W, can be guided upward to Fu. Therefore, the release of the air flow W (Wr) in the left - right direction is blocked, and the wind speed in the upward direction Fu can be increased. As a result, the spraying ability upward can be enhanced, and it is possible to spray with a margin up to the vicinity of the upper end of fruit trees, etc. That is, the air volume (wind speed) and the spraying area in the radial direction Fr, namely, the optimization of the chemical liquid spraying can be achieved. In addition, the efficiency of the chemical liquid spraying, the improvement of fuel consumption, and the improvement of noise can be realized.

[0014] (2) Since the straightening portion 5 is configured by providing an inner straightening cylinder 5i having a curved shape for guiding the air flow W flowing out from the stator blade portion 4 in the radial direction Fr, and an outer straightening cylinder 5o having a curved shape for guiding the air flow W flowing out from the stator blade portion 4 in the radial direction Fr by being located outside the inner straightening cylinder 5i in the radial direction Fr, the air flow can be straightened by the two - stage straightening cylinders 5i and 5o on the inner and outer sides. Thereby, the effectiveness of the effect can be further enhanced from the viewpoint of optimizing the chemical liquid spraying.

[0015] (3) In a preferred embodiment, when providing the air flow guiding portion 6od having the outer - side regulating portions 6odp and 6odq, if the air flow guiding portion 6id is integrally formed at the lower portion 5id of the inner straightening cylinder 5i, it can be integrally formed on the existing inner straightening cylinder 5i. Therefore, it can contribute to the improvement of the ease of manufacturing and low cost, and in particular, can enhance the guiding action on the air flow W near the center on the lower side flowing out from the stator blade portion 4.

[0016] (4) In a preferred embodiment, when providing the air blowing induction part 6od having the outer side regulating parts 6odp and 6odq, if a pair of left and right inner side regulating parts 6idp and 6idq formed by bending and regulating the left and right direction air blowing W (Wr) are integrally provided at the left and right edge positions of the air blowing induction part 6id, particularly, since the discharge in the left and right direction with respect to the air blowing W near the center at the lower side flowing out from the stator vane part 4 can be surely blocked, the chemical liquid spraying ability to the upper side Fu can be further enhanced.

[0017] (5) In a preferred embodiment, when providing the air blowing induction part 6id having the inner side regulating parts 6idp and 6idq, if the air blowing induction part 6od is integrally formed at the lower part 5od of the outer fairing 5o, it can be integrally formed with the existing outer fairing 5o, so that it can contribute to the improvement of the manufacturing easiness and low cost, and particularly, the induction effect with respect to the air blowing W near the outer periphery at the lower side flowing out from the stator vane part 4 can be enhanced.

[0018] (6) In a preferred embodiment, when providing the air blowing induction part 6id having the inner side regulating parts 6idp and 6idq, if a pair of left and right outer side regulating parts 6odp and 6odq formed by bending and regulating the left and right direction air blowing W (Wr) are integrally provided at the left and right edge positions of the air blowing induction part 6od, particularly, since the discharge in the left and right direction with respect to the air blowing W near the outer periphery at the lower side flowing out from the stator vane part 4 can be surely blocked, the chemical liquid spraying ability to the upper side Fu can be further enhanced.

Brief Description of the Drawings

[0019]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Mode for Carrying Out the Invention

[0020] Next, preferred embodiments according to the present invention will be given and described in detail with reference to the drawings.

[0021] First, to facilitate the understanding of the air blower 1 according to the present embodiment, the overall schematic configuration of the speed sprayer M will be described with reference to FIG. 2.

[0022] In the speed sprayer M, 50 is the body. A pair of left and right front wheels (not shown in the figure) are provided on the front side of the body 50, and a pair of left and right rear wheels 51... are provided on the rear side, and it runs by itself with the mounted engine. Also, a driver's seat (not shown in the figure) is provided at the front of the body 50, and on the front panel in front of the driver's seat, lighting devices such as headlights and necessary vehicle equipment such as rearview mirrors are provided. And behind the driver's seat, a chemical liquid tank 52 showing only the rear part side in FIG. 2 and a machine room 53 accommodating an engine room and a rotary drive unit 3 etc. are mounted, and behind this, a chemical liquid spraying part 54 provided with the air blower 1 according to the present embodiment is mounted. Therefore, this chemical liquid spraying part 54 is provided with, in addition to the air blower 1, a plurality of injection nozzles N... for injecting chemical liquid against the air blower 1, and chemical liquid is supplied to this injection nozzle N... from a chemical liquid supply part (not shown).

[0023] Next, the configuration of the air blower 1 according to the present embodiment, particularly the overall basic configuration, will be described with reference to FIG. 2 (and FIG. 1).

[0024] As shown in Fig. 2, the blower device 1 includes a blower housing portion 21 that is disposed at a distance rearward from the rear end surface 50r of the body 50 (chemical solution tank 52) and has a fan guard 22 provided at the rear end. A rotor portion (blower fan) 2 having a plurality of rotor blades 2p... is disposed on the rear side inside the blower housing portion 21 in the radial direction Fr. Therefore, the plurality of rotor blades 2p... are arranged at equal intervals along the circumferential direction Ff. On the other hand, since the above-described rotational drive unit 3 is incorporated inside the body 50, a transmission shaft 3s that rotationally transmits the rotational output of the rotational drive unit 3 is extended rearward from the rear end surface 50r and fixed to the rotational center portion of the rotor portion 2. Thereby, the rotor portion 2 is rotated by the rotational drive unit 3. Note that the rotational drive source of the rotational drive unit 3 is an engine.

[0025] Also, on the front side inside the blower housing portion 21, that is, in front of the rotor portion 2 (in front of the blowing direction Fw), a stator portion 4 having a plurality of stator blades 4p... in the radial direction Fr and disposed with fixed positions is provided. The stator portion 4 has a cylindrical base portion 4b at the central position, and a plurality of stator blades 4p... are arranged between the cylindrical base portion 4b and the blower housing portion 21. Each of the stator blades 4p... is arranged at equal intervals along the circumferential direction, and the inner end of each stator blade 4p... is fixed to the outer peripheral surface of the cylindrical base portion 4b, and the outer end is fixed to the inner peripheral surface of the blower housing portion 21.

[0026] On the other hand, a blowing space S is secured between the front end of the blower housing portion 21, that is, between the front end 4f of the stator portion 4 and the rear end surface 50r of the body 50, and a rectifying portion 5 with a fixed position that constitutes the main part of the present invention is disposed in this blowing space S.

[0027] Next, the configuration of the main part of the blower device 1 according to the present embodiment will be specifically described with reference to Figs. 1 - 5.

[0028] First, the rectifying unit 5 includes at least one rectifying cylinder (in the embodiment, two rectifying cylinders 5i and 5o) that rectifies the blown air W from the stator vane unit 4 in the radial direction Fr (spraying direction). Specifically, as shown in FIG. 2, the inner rectifying cylinder 5i having a curved shape that guides the blown air W flowing out from the stator vane unit 4, particularly the blown air W near the center, to the radial direction Fr, and the outer rectifying cylinder 5o having a curved shape that guides the blown air W flowing out from the stator vane unit 4, particularly the blown air W near the outer periphery, to the radial direction Fr by being arranged outside the inner rectifying cylinder 5i in the radial direction Fr. By providing the inner rectifying cylinder 5i and the outer rectifying cylinder 5o in this way, the two-stage rectifying cylinders 5i and 5o on the inner and outer sides can be used for rectification, so the effectiveness of the effect can be further enhanced from the viewpoint of optimizing the chemical liquid spraying.

[0029] The overall shape of the inner rectifying cylinder 5i is shown in FIGS. 3 and 5. As shown in FIGS. 3 and 5, the inner rectifying cylinder 5i includes an inflow portion 61, an outflow portion 62 located in front of the inflow portion 61 in the blowing direction Fw, and a curved rectifying portion 63 provided between the inflow portion 61 and the outflow portion 62. A plurality of convex strip portions 63s... that function as reinforcing ribs arranged along the radial direction Fr are arranged at predetermined intervals in the circumferential direction Ff on the outer peripheral surface of the curved rectifying portion 63, and the whole is integrally formed by a synthetic resin material such as FRP (fiber-reinforced plastic).

[0030] Thereby, it has a function of guiding (guiding) the blown air W in the axial direction Fc flowing out from the stator vane unit 4, particularly the blown air W near the center, to the radial direction Fr that is substantially at a right angle, and discharging (spraying) it in the radial direction Fr that is the spraying direction.

[0031] Also, the overall shape of the outer rectifying cylinder 5o is shown in FIGS. 4 and 5. As shown in FIGS. 4 and 5, the outer rectifying cylinder 5o includes an inflow portion 71, an outflow portion 72 located in front of the inflow portion 71, and a curved rectifying portion 73 provided between the inflow portion 71 and the outflow portion 72. A plurality of convex strip portions 73s... that function as reinforcing ribs arranged along the radial direction are arranged at predetermined intervals in the circumferential direction Ff on the outer peripheral surface of the curved rectifying portion 73, and the whole is integrally formed by a synthetic resin material such as ABS resin.

[0032] This causes the air flow W in the axial direction Fc flowing out from the stationary blade portion 4, particularly the air flow W near the outer periphery, to be guided (guided) in the radial direction Fr that is substantially perpendicular, and to have a function of discharging (spraying) in the radial direction Fr that is the spraying direction.

[0033] By the way, such an inner fairing 5i and an outer fairing 5o spray the chemical liquid in the radial direction Fr and eliminate the need for spraying at least downward. Conventionally, the lower parts 5id and 5od were cut, and a blocking plate 81 as shown in FIGS. 1 and 7 was installed below this to prevent the useless and wasteful air flow W downward. However, the air flow W blocked by the blocking plate 81 (Wr: see FIG. 6) is discharged in the left-right direction, and there was a problem that optimized chemical liquid spraying could not be achieved.

[0034] Therefore, in the embodiment according to the present invention, an air flow guiding portion 6id as shown in FIGS. 3 and 5, that is, an air flow guiding portion 6id that guides the air flow W near the center on the lower side flowing out from the stationary blade portion 4 upward in the upward direction Fu, is provided at the lower part 5id of the inner fairing 5i. Also, an air flow guiding portion 6od as shown in FIGS. 4 and 5, that is, an air flow guiding portion 6od that guides the air flow W near the outer periphery on the lower side flowing out from the stationary blade portion 4 upward in the upward direction Fu, is provided at the lower part 5od of the outer fairing 5o.

[0035] In this case, since the inner fairing 5i is integrally formed as a whole from a synthetic resin material as described above, the air flow guiding portion 6id can be integrally formed (integrally molded) with the lower part 5id of the inner fairing 5i so as to be continuous with the inner fairing 5i. In this way, if the air flow guiding portion 6id is integrally molded with respect to the inner fairing 5i, it can be continuously formed on the existing inner fairing 5i, which can contribute to improving the ease of manufacturing and cost reduction. In particular, the guiding effect on the air flow W near the center on the lower side flowing out from the stationary blade portion 4 (arrow Wi in FIG. 5) can be enhanced.

[0036] In addition, as shown in FIGS. 3 and 5, the air blowing guiding portion 6id forms the shape of the intermediate portion in the left-right direction into a curved surface 6idm so that the air blowing W becomes the arrow Wi, and at the left and right edges of this curved surface 6idm, a pair of left and right inner side regulating portions 6idp and 6idq that are bent in a stepped shape to regulate the air blowing W in the left-right direction are integrally provided. By providing such inner side regulating portions 6idp and 6idq, in particular, the release in the left-right direction of the air blowing W near the center on the lower side flowing out from the stator blade portion 4 can be surely blocked, so that the chemical liquid spraying ability upward to Fu can be further enhanced.

[0037] On the other hand, since the outer fairing 5o is also integrally formed as a whole from a synthetic resin material as described above, the air blowing guiding portion 6od can be integrally formed (integrally molded) with the lower portion 5od of the outer fairing 5o so as to be continuous with this outer fairing 5o. By integrally molding the air blowing guiding portion 6od with respect to the outer fairing 5o in this way, the existing outer fairing 5o can be continuously formed, so that it can contribute to the improvement of the ease of manufacture and low cost, and in particular, the guiding action with respect to the air blowing W (arrow Wo in FIG. 5) near the outer periphery on the lower side flowing out from the stator blade portion 4 can be enhanced.

[0038] In addition, as shown in FIGS. 4 and 5, the air blowing guiding portion 6od forms the shape of the intermediate portion in the left-right direction into a curved surface 6odm so that the air blowing W becomes the arrow Wo, and at the left and right edges of this curved surface 6odm, a pair of left and right outer side regulating portions 6odp and 6odq that are bent in a stepped shape to regulate the air blowing W in the left-right direction are integrally provided. By providing such outer side regulating portions 6odp and 6idq, in particular, the release in the left-right direction of the air blowing W (Wo) near the outer periphery on the lower side flowing out from the stator blade portion 4 can be surely blocked, so that the chemical liquid spraying ability upward to Fu can be further enhanced.

[0039] Then, in the air supply space S where the inner rectifying cylinder 5i including the air supply guiding part 6id and the outer rectifying cylinder 5o including the air supply guiding part 6od are arranged, as shown in FIGS. 2 and 7, a plurality of injection nozzles N... are arranged at predetermined intervals in the circumferential direction Ff. As a result, each injection nozzle N... is connected to the chemical liquid tank 52 described above via a chemical liquid pipe, a valve, and a liquid supply pump (not shown in the figure).

[0040] Next, the function (operation) of the air supply device 1 according to the present embodiment will be described with reference to FIGS. 1 to 8.

[0041] Now, assume that the speed sprayer M is operating in the chemical liquid spraying mode. In this case, the rotor blades 2 rotate due to the rotation of the rotary drive unit 3. The rotation direction of the rotor blades 2 at this time is the counterclockwise direction Rm shown in FIG. 7. Due to the rotation of the rotor blades 2, outside air is sucked from the rear end port through the fan guard 22 of the air casing 21, and this outside air (air supply W) is directed in the air supply direction Fw shown in FIG. 2, and this air supply W is primarily rectified in the axial direction Fc by the stator blade plates 4p... of the stator blade part 4.

[0042] Furthermore, the air supply W that has passed through the stator blade part 4 reaches the rectifying part 5, that is, the inflow part 61 of the inner rectifying cylinder 5i and the inflow part 71 of the outer rectifying cylinder 5o, and is secondarily rectified in the right-angle direction (radial direction Fr) by the curved rectifying part 63, the curved rectifying part 73, and the rear end face 50r of the body 50. At this time, since the chemical liquid is supplied from the chemical liquid tank 52 to each injection nozzle N..., the chemical liquid is sprayed from each injection nozzle N..., and the sprayed chemical liquid is dispersed (sprayed) in the radial direction Fr by the air supply W.

[0043] In addition, since the lower part 5id of the inner rectifying cylinder 5i and the lower part 5od of the outer rectifying cylinder 5o are provided with air supply guiding parts 6id, 6od for guiding the lower air supply W flowing out from the stator blade part 4 upward Fu, the air supply W flowing out from the stator blade part 4 is guided particularly upward Fu in the radial direction Fr as shown by the dotted arrow in FIG. 6. Therefore, it is not guided downward, leftward, or rightward. In FIG. 6, the arrow Wr shown by the virtual line indicates the air supply direction in the left-right direction when the air supply guiding parts 6id, 6od are not provided.

[0044] On the other hand, Fig. 8 shows the measurement results of the wind speed P [m / s] with respect to the blowing direction (Fr) in the blower 1. When measuring the wind speed, as shown in Fig. 7, the position at a distance Rs = 1000 [mm] in the injection direction Fr from the axis passing through the rotation center of the moving blade part 2 is taken as the measurement position, and at this measurement position, the wind speed P is measured at fifteen circumferential positions of points A, B, C... N, O equally divided at equal angles in the circumferential direction (Ff) shown in Fig. 7. Also, Pr in Fig. 8 indicates the wind speed characteristics of the conventional example, that is, the conventional example when the blowing induction parts 6id, 6od are removed. As shown in Fig. 8, at points F, G, H, I, J near the upper end position in the circumferential direction, the wind speed can be increased (strengthened) compared to the conventional example, and at points A, B, N, O near the left and right positions, it can be decreased (weakened) compared to the conventional example. Moreover, the overall wind speed in the circumferential direction could be equalized.

[0045] Thus, according to the blower 1 of the speed sprayer M according to this embodiment, as a basic configuration, when constructing the blower 1 of the speed sprayer M, a moving blade part 2 provided with a plurality of moving blade blades 2p... in the radial direction Fr at predetermined intervals along the circumferential direction Ff, a rotation drive part 3 for rotating this moving blade part 2, a plurality of stationary blade blades 4p... provided at predetermined intervals along the circumferential direction Ff and fixed and arranged in front of the blowing direction Fw by the moving blade part 2, a stationary blade part 4, and a rectifying part 5 having at least one rectifying cylinder 5i, 5o arranged in front of the blowing direction Fw of this stationary blade part 4 and rectifying the blowing W from the stationary blade part 4 in the radial direction Fr. In the blower 1 of the speed sprayer M that sprays the chemical liquid sprayed from a plurality of injection nozzles N... facing this rectifying part 5 in the radial direction Fr, in particular, since the blowing induction parts 6id, 6od for guiding the blowing W flowing out from the stationary blade part 4 upward Fu are provided at the lower parts 5id, 5od of the rectifying cylinders 5i, 5o in the rectifying part 5, the blowing induction parts 6id, 6od can guide the blowing W flowing out from the stationary blade part 4, especially the lower blowing W, upward Fu.

[0046] As a result, the release of the blowing W (Wr) in the left - right direction is blocked, and the wind speed upward to Fu can be increased. Also, the spraying ability upward can be enhanced, and spraying can be carried out with a margin up to near the upper end of fruit trees and the like. That is, the air volume (wind speed) and the spraying area in the radial direction Fr, namely, the optimization of the chemical liquid spraying can be achieved. In addition, the efficiency of the chemical liquid spraying, the improvement of fuel consumption, and the reduction of noise can be realized.

[0047] As described above, the preferred embodiments have been described in detail. However, the present invention is not limited to such embodiments, and can be arbitrarily changed, added, or deleted in terms of the detailed configuration, shape, material, quantity, method, etc., without departing from the gist of the present invention.

[0048] For example, the flow - straightening part 5 is illustrated in the case of being configured by providing an inner flow - straightening cylinder 5i having a curved shape for guiding the blowing W flowing out from the stator blade part 4 in the radial direction Fr, and an outer flow - straightening cylinder 5o having a curved shape for guiding the blowing W flowing out from the stator blade part 4 in the radial direction Fr by being located outside the inner flow - straightening cylinder 5i in the radial direction Fr. However, three or more flow - straightening cylinders including additional other flow - straightening cylinders may be included. Also, an example is shown in which the air - flow guiding part 6id is integrally formed at the lower part 5id of the inner flow - straightening cylinder 5i, and further, the air - flow guiding part 6od is integrally formed at the lower part 5od of the outer flow - straightening cylinder 5o. However, the separately formed air - flow guiding parts 6id and 6od may be fixed by fixing bolts or the like. In this case, the forming conditions such as the forming material can be changed as necessary. On the other hand, it is desirable to provide the inner - side regulating parts 6idp and 6idq provided at the left - and - right edge positions of the air - flow guiding part 6id and the outer - side regulating parts 6odp and 6odq provided at the left - and - right edge positions of the air - flow guiding part 6od, but they are not essential components.

Industrial Applicability

[0049] The blowing device according to the present invention can be used in various speed sprayers for spraying chemical liquids. In this case, the speed sprayers include vehicles of various forms for spraying chemical liquids, for example, four - wheel trucks and tractors with a chemical liquid spraying device mounted on the loading platform are also included.

Explanation of Reference Numerals

[0050] 1: Blower device, 2: Rotor blade section, 2p…: A plurality of rotor blades, 3: Rotation drive section, 4: Stator blade section, 4p…: A plurality of stator blades, 5: Rectifying section, 5i: Inner rectifying cylinder, 5id: Lower part of the inner rectifying cylinder, 5o: Outer rectifying cylinder, 5od: Lower part of the outer rectifying cylinder, 6id: Air supply induction section, 6idp: Inner side regulating section, 6idq: Inner side regulating section, 6od: Air supply induction section, 6odp: Outer side regulating section, 6odq: Outer side regulating section, Fr: Radial direction, Fw: Air supply direction, Fu: Upward direction, Ff: Circumferential direction, N…: A plurality of injection nozzles, M: Speed sprayer

Claims

1. A blower device for a speed sprayer that sprays a chemical solution radiating from a plurality of injection nozzles facing the rectifying unit in a radial direction, comprising: a rotor blade part provided with a plurality of radial rotor blades at predetermined intervals along the circumferential direction; a rotational drive part for rotating the rotor blade part; a stator blade part provided with a plurality of radial stator blades at predetermined intervals along the circumferential direction and fixed and arranged in front of the blower direction by the rotor blade part; and a rectifying part having at least one rectifying cylinder arranged in front of the blower direction of the stator blade part and rectifying the blower from the stator blade part in the radial direction. The rectifying part includes a curved inner rectifying cylinder for guiding the blower from the stator blade part in the radial direction, and a curved outer rectifying cylinder located outside the inner rectifying cylinder in the radial direction for guiding the blower from the stator blade part in the radial direction. A blower guiding part is provided at the lower part of the inner rectifying cylinder, which guides the blower from the stator blade part upward and has a pair of left and right inner side regulating parts formed by bending at the left and right edge positions to regulate the blower in the left and right directions.

2. The blower device for a speed sprayer according to claim 1, wherein the outer rectifying cylinder integrally forms the blower guiding part at the lower part of the outer rectifying cylinder.

3. The blower device for a speed sprayer according to claim 1, wherein the blower guiding part integrally includes a pair of left and right outer side regulating parts formed by bending at the left and right edge positions to regulate the blower in the left and right directions.

4. A blower device of a speed sprayer that sprays a chemical solution injected from a plurality of injection nozzles facing the rectifying unit in the radial direction, comprising: a rotor blade portion provided with a plurality of radial rotor blades at predetermined intervals along the circumferential direction; a rotational drive unit that rotates the rotor blade portion; a stator blade portion provided with a plurality of radial stator blades at predetermined intervals along the circumferential direction and fixed in front of the blower direction by the rotor blade portion; and a rectifying unit disposed in front of the blower direction of the stator blade portion and having at least one rectifying cylinder that rectifies the blower from the stator blade portion in the radial direction. The rectifying unit includes a curved inner rectifying cylinder that guides the blower from the stator blade portion in the radial direction, and a curved outer rectifying cylinder that is located outside the inner rectifying cylinder in the radial direction and guides the blower from the stator blade portion in the radial direction. A blower guiding portion is provided at the lower part of the outer rectifying cylinder, which guides the blower from the stator blade portion upward and has a pair of left and right outer side regulating portions that are bent at the left and right edge positions to regulate the blower in the left and right directions.

5. The blower device of the speed sprayer according to claim 4, wherein the inner rectifying cylinder is integrally formed with the blower guiding portion at the lower part of the inner rectifying cylinder.

6. The blower device of the speed sprayer according to claim 4, wherein the blower guiding portion integrally includes a pair of left and right inner side regulating portions that are bent at the left and right edge positions to regulate the blower in the left and right directions.

Images