nozzle

Abstract

To provide a nozzle that keeps a liquid spray distance short.SOLUTION: A nozzle of the present invention comprises a nozzle body that has a slit 42 for discharging a liquid outward, and an internal channel 5 extending in a first direction so as to communicate with the slit 42 and guiding the liquid to the slit 42. The slit 42 has a first direction set as a width direction, and spreads along a surface direction orthogonal to the first direction. The width of the slit 42 is smaller than a size in the surface direction at a position of communicating with the slit 42 in the internal channel 5.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a nozzle for dispersing a liquid. [Background technology]

[0002] Conventionally, liquid spraying devices have been known that spray liquids such as water in fields where crops such as various vegetables or flowers are grown outdoors, vegetable gardens, greenhouses, orchards, parks where lawns or flowers are planted, gardens, etc. (see Patent Document 1).

[0003] As shown in Figure 11, the nozzle (spray head) 500 of this liquid spraying device comprises an attachment portion 510 attached to the upper end of the riser pipe 501, and a stepped portion 520 formed in a stepped shape that protrudes upward from the attachment portion 510.

[0004] The stepped portion 520 has a lower step portion 521 connected to the attachment portion 510 and an upper step portion 522 connected to an upper portion of the lower step portion 521.

[0005] Lower stage 521 has an external shape that is approximately rectangular parallelepiped, and is formed so that its central axis coincides with the axis of nozzle 500, while upper stage 522 has an external shape that is approximately cylindrical, and is formed so that its axis coincides with the axis of nozzle 500. Furthermore, stepped portion 520 is formed with a plurality of holes 525... that can sprinkle water onto a watering area such as soil. These plurality of holes 525... are arranged radially from the axis of nozzle 500 and at equal intervals (45° apart) from one another.

[0006] 12, hole 525 is formed in the shape of a slit in the vertical direction so as to straddle horizontal surface 521a of lower stage portion 521 and vertical surface 522a extending upward from horizontal surface 521a, that is, vertical surface 522a of upper stage portion 522. That is, hole 525 has slit portion 525a (slit portion formed in horizontal surface 521a) formed in horizontal surface 521a and slit portion 525b (slit portion formed in vertical surface 522a) formed in vertical surface 522a, and slit portion 525a and slit portion 525b communicate with each other.

[0007] Water is discharged vertically upward from slit portion 525a in hole 525. On the other hand, water is discharged horizontally from slit portion 525b in hole 525. Therefore, water discharged vertically upward collides with water discharged horizontally, and as a result, water is discharged diagonally upward from hole 525.

[0008] In this way, the nozzle 500 of the liquid spraying device can spray the liquid at a predetermined angle, thereby spraying the liquid to a position far from the nozzle 500. [Prior art documents] [Patent documents]

[0009] [Patent Document 1] Japanese Patent Application Publication No. 10-180150 Summary of the Invention [Problem to be solved by the invention]

[0010] However, depending on the type of plant being cultivated and the cultivation location, there may be cases where it is required to limit the area where the liquid is sprayed (the distance from the nozzle 500).

[0011] Therefore, an object of the present invention is to provide a nozzle that reduces the distance over which liquid is sprayed. [Means for solving the problem]

[0012] The nozzle of the present invention comprises: a nozzle body having a slit for discharging liquid to the outside, and an internal flow path extending in a first direction, which is a predetermined direction, communicating with the slit and guiding the liquid to the slit; The slit has the first direction as a width direction and extends along a surface direction perpendicular to the first direction, The width of the slit is smaller than the size of the internal flow path in the planar direction at a position where the slit communicates with the internal flow path.

[0013] According to this configuration, the nozzle is arranged so that the first direction is vertical, and the liquid supplied to the nozzle is ejected horizontally from the slit of the nozzle. Moreover, because the width of the slit is smaller than the internal flow path, the vertical velocity component of the liquid ejected horizontally from the slit to the outside is suppressed, thereby suitably reducing the spray distance of the liquid.

[0014] In the nozzle, The internal flow path may have a straight pipe portion that extends linearly in the first direction from the communication position toward the upstream side.

[0015] With this configuration, the fan-shaped spread of the liquid released from the slit when viewed from the first direction (see, for example, angle α in Figure 5) can be sufficiently ensured, thereby ensuring a sufficient spray range.

[0016] Further, in the nozzle, the nozzle body has a columnar shape extending in the first direction, the straight pipe portion is disposed at a position shifted toward one side of a center position of the nozzle body in a third direction perpendicular to each of the first direction and the second direction when viewed from a second direction perpendicular to the first direction, The slit may extend in the second direction when viewed from the first direction and widen toward the other side in the third direction from an imaginary line that passes through the internal flow path at the communicating position.

[0017] With this configuration, the size of the nozzle body in the planar direction perpendicular to the first direction can be reduced, while the distance from the position where the slit connects to the internal flow path (straight pipe section) to the position where the liquid is released to the outside (see, for example, arrow β in Figure 5) can be sufficiently secured, thereby sufficiently reducing the vertical velocity component of the liquid released horizontally from the slit.

[0018] Further, in the nozzle, The nozzle body may be made of resin and may have at least one recess that is recessed toward the inside of the nozzle body in an area on the outer surface corresponding to at least the straight pipe portion in the first direction and in an area on the other side of the straight pipe portion in the third direction when viewed from the second direction.

[0019] If the straight pipe section is deformed or if unevenness occurs on the inner peripheral surface of the straight pipe section, the fan-shaped spread of the liquid released from the slit will be smaller when viewed from the first direction, but by offsetting the straight pipe section in the nozzle body in the third direction and providing a recess in the thickened section as in the above configuration, deformation of the straight pipe section due to shrinkage during molding and the occurrence of unevenness on the inner peripheral surface of the straight pipe section can be suppressed, thereby preventing the fan-shaped spread of the liquid released from the slit from becoming smaller. In other words, it is possible to suppress a reduction in the liquid spray range (the angle of the fan-shaped spread) caused by deformation of the straight pipe section of the nozzle or unevenness on the inner peripheral surface.

[0020] Further, in the nozzle, the internal flow path has a thick pipe portion extending in the first direction from an upstream end of the straight pipe portion, The thick pipe portion may have a cross section larger than the cross section of the straight pipe portion.

[0021] By making the section upstream of the straight pipe section in the flow direction (first direction) in the internal flow path thicker and reducing the thickness of the corresponding section of the nozzle body, shrinkage during molding in that section of the nozzle body can be reduced, thereby more effectively preventing deformation of the straight pipe section, etc. [Effects of the Invention]

[0022] As described above, according to the present invention, a nozzle that reduces the liquid spray distance can be provided. [Brief explanation of the drawings]

[0023] [Figure 1] FIG. 1 is a perspective view of a nozzle according to this embodiment. [Figure 2] FIG. 2 is a side view of the nozzle. [Figure 3] FIG. 3 is a front view of the nozzle. [Figure 4] FIG. 4 is a cross-sectional view taken along the line IV-IV in FIG. [Figure 5] FIG. 5 is a cross-sectional view taken along the line VV in FIG. [Figure 6] FIG. 6 is a cross-sectional view taken along the line VI-VI in FIG. [Figure 7] FIG. 7 is a bottom view of the nozzle. [Figure 8] FIG. 8 is a diagram showing the nozzle attached to the hose. [Figure 9] FIG. 9 is a diagram showing the distribution of the irrigation intensity of the nozzle. [Figure 10] FIG. 10 is a diagram showing the distribution of irrigation intensity when multiple nozzles are arranged linearly at intervals. [Figure 11] FIG. 11 is a diagram for explaining a conventional nozzle. [Figure 12] FIG. 12 is an enlarged view for explaining the nozzle holes. DETAILED DESCRIPTION OF THE INVENTION

[0024] Hereinafter, one embodiment of the present invention will be described with reference to FIGS.

[0025] The nozzle according to this embodiment is attached to a hose H placed in a field or the like (see FIG. 8), and is used to spray water supplied through the hose H onto the field or the like. As shown in FIGS. 1 to 7, this nozzle 1 includes a slit 42 for discharging water to the outside, and an internal flow path 5 for guiding water from the hose H to the slit 42.

[0026] Specifically, the nozzle 1 comprises a cylindrical base 2, an extension 3 extending from the outer peripheral surface 2a of the base 2 in the radial direction of the base 2, and a nozzle body 4 extending from the base 2 in the direction of the central axis C of the base 2. The nozzle 1 is made of a resin such as AES resin (acrylonitrile-EPDM-styrene) or ABS resin (acrylonitrile-butadiene-styrene), and is formed by molding.

[0027] The base 2 has a first flow path 21 extending along the central axis C. This first flow path 21 constitutes a part of the internal flow path 5 of the nozzle 1. Specifically, the first flow path 21 is a hole that penetrates the center of the base 2 in the direction of the central axis C (hereinafter also referred to as the "central axis direction") as viewed from the direction of the central axis C. In this embodiment, the first flow path 21 is a circular hole as viewed from the central axis direction, and the diameter (inner diameter) at each position in the central axis direction is constant. Furthermore, the end of the base 2 opposite the nozzle body 4 in the central axis direction has a notched shape that is inclined with respect to the central axis C (see FIG. 3). That is, one end face 22 of the base 2 in the Z axis direction includes a first surface 221 that extends in a planar direction perpendicular to the Z axis direction and a second surface 222 that is inclined with respect to the Z axis direction (see FIGS. 3 and 7).

[0028] In the following, the direction in which the extension portion 3 extends is referred to as the X-axis direction (second direction), the direction in which the nozzle body 4 extends is referred to as the Z-axis direction (first direction), and the direction perpendicular to both the X-axis direction and the Z-axis direction is referred to as the Y-axis direction (third direction).

[0029] The extension portion 3 extends in the X-axis direction from an end portion on one side (the lower side in FIG. 3) in the Z-axis direction (the central axis direction) of the base portion 2. An end face 31 on one side in the Z-axis direction of the extension portion 3 expands in a plane direction perpendicular to the Z-axis direction (see FIGS. 3 and 7), and the thickness of the extension portion 3 (the dimension in the Z-axis direction) decreases toward the tip side (the right side in FIG. 3). In addition, the width of the extension portion 3 (the dimension in the Y-axis direction) decreases toward the tip side, and the tip portion of the extension portion 3 has an arc shape when viewed from the Z-axis direction (see FIG. 7).

[0030] The nozzle body 4 is a columnar portion extending from the base 2 to the other side in the Z-axis direction (upper side in FIG. 3). The nozzle body 4 of this embodiment has a main body 41 extending in the Z-axis direction, a slit 42 that discharges water (liquid) to the outside, and a second flow path 43 that extends within the main body 41 in the Z-axis direction, communicates with the slit 42, and guides water to the slit 42. The nozzle body 4 also has at least one recess 44 that is recessed toward the inside of the main body 41, and the nozzle body 4 of this embodiment has multiple recesses 44. The nozzle body 4 also has a pair of protrusions 45 that protrude from the main body 41 to one side and the other side in the Y-axis direction.

[0031] The main body 41 is a cylindrical part extending in the Z-axis direction, and the diameter (outer diameter) of the main body 41 is smaller than the diameter (outer diameter) of the base 2. Furthermore, the main body 41 extends from the base 2 so that the central axis of the main body 41 coincides with the central axis C of the base 2. In this embodiment, the diameter of the main body 41 is φ7 mm, and the diameter of the base 2 is φ11 mm.

[0032] The second flow path 43 extends in the Z-axis direction within the main body 41, with one end in the Z-axis direction communicating with the first flow path 21 of the base 2 and the other end communicating with the slit 42. This second flow path 43, together with the first flow path 21, constitutes the internal flow path 5 of the nozzle 1. That is, the second flow path 43 and the first flow path 21 are connected to each other to form the internal flow path 5 of the nozzle 1 (see FIG. 4).

[0033] The internal flow path 5 has an opening 22a that communicates with the outside in an end face 22 on one side in the Z-axis direction of the nozzle 1 (an end face on one side of the base 2), and extends from the opening 22a toward the other side in the Z-axis direction. The internal flow path 5 has a straight pipe section 51 that extends in the Z-axis direction from a position where it communicates with the slit 42 toward one side (upstream side) in the Z-axis direction. The internal flow path 5 also has a thick pipe section 53 that extends in the Z-axis direction directly or indirectly from an end (upstream end) on one side in the Z-axis direction of the straight pipe section 51. The cross section (cross section perpendicular to the Z-axis direction) of the thick pipe section 53 is larger than the cross section (cross section perpendicular to the Z-axis direction) of the straight pipe section 51.

[0034] In this embodiment, the thick pipe section 53 extends from one end of the straight pipe section 51 in the Z-axis direction toward one side in the Z-axis direction via the connection section 52. That is, the internal flow path 5 has the straight pipe section 51, the connection section 52, and the thick pipe section 53 in this order from the other side to one side in the Z-axis direction.

[0035] The straight pipe section 51 extends linearly from the slit 42 in the Z-axis direction toward one side in the Z-axis direction, and is disposed at a position closer to one side (the left side in FIG. 4) than the center position of the main body 41 in the Y-axis direction (the position of the central axis C) when viewed from the X-axis direction. Specifically, the straight pipe section 51 is disposed so that the central axis C1 of the straight pipe section 51 is disposed to one side of the center position of the main body 41 in the Y-axis direction (the position of the central axis C) when viewed from the X-axis direction. Furthermore, the straight pipe section 51 is disposed at the center position of the main body 41 in the X-axis direction when viewed from the Y-axis direction. That is, the straight pipe section 51 is disposed at a position closer to one side of the center position of the main body 41 in the Y-axis direction and at the center position in the X-axis direction when viewed from the Z-axis direction (see FIG. 5).

[0036] The straight pipe section 51 of this embodiment is a circular hole when viewed from the Z-axis direction, and the diameter (inner diameter) d1 at each position in the Z-axis direction is constant. The diameter d1 of the straight pipe section 51 of this embodiment is φ1.3 mm, and the offset distance from the central axis C in the Y-axis direction (more specifically, the distance from the central axis C to the central axis C1 of the straight pipe section 51) is 1 mm. The length of the straight pipe section 51 (dimension in the Z-axis direction) is 6.35 mm.

[0037] The connecting portion 52 is a portion that connects the straight pipe portion 51 and the thick pipe portion 53, which have different cross-sectional sizes in the internal flow path 5, and is a portion where the cross-sectional area gradually increases from the straight pipe portion 51 toward the thick pipe portion 53. In this embodiment, the straight pipe portion 51 and the thick pipe portion 53 extend straight in the Z-axis direction, and the connecting portion 52 has a tapered shape that widens from the straight pipe portion 51 toward the thick pipe portion 53.

[0038] The thick tube portion 53 is a cylindrical hole extending in the Z-axis direction so that the central axis of the thick tube portion 53 coincides with the central axis C of the base portion 2. In the nozzle 1, the thick tube portion 53 extends from the end face 22 on one side of the base portion 2 in the Z-axis direction to one end of the main body 41 in the Z-axis direction (more specifically, the position of the slit 42). That is, the thick tube portion 53 is composed of the first flow path 21 and one end of the second flow path 43 in the Z-axis direction. The thick tube portion 53 of this embodiment is a circular hole when viewed in the Z-axis direction, and the diameter (inner diameter) d2 at each position in the Z-axis direction is constant.

[0039] The slit 42 has a width in the Z-axis direction and extends along a plane direction perpendicular to the Z-axis direction. The slit 42 is located at the other end of the main body 41 in the Z-axis direction. In this embodiment, the slit 42 has a constant width (spacing in the Z-axis direction) at each position in the plane direction perpendicular to the Z-axis direction. The width d3 of the slit 42 is smaller than the plane size of the internal flow path 5 at the position where the slit 42 communicates with the slit 42 (in this embodiment, the diameter d1 of the straight pipe portion 51) (see FIG. 4). When viewed from the Z-axis direction, the slit 42 extends in the X-axis direction and extends to the other side in the Y-axis direction from an imaginary line VL that passes through the internal flow path 5 at the position where the slit 42 communicates with the internal flow path 5 (see FIG. 5). In this embodiment, the imaginary line VL passes through the center (central axis C1) of the straight pipe portion 51 when viewed from the Z-axis direction. The width d3 of the slit 42 in this embodiment is 0.45 mm.

[0040] The multiple recesses 44 include first recesses 44a that are arranged in a range corresponding to the straight pipe portion 51 in the Z-axis direction on the outer peripheral surface 41a of the main body 41 and on the other side of the straight pipe portion 51 in the Y-axis direction when viewed from the X-axis direction. The first recesses 44a in this embodiment are arranged on one side and the other side in the X-axis direction on the outer peripheral surface 41a of the main body 41 (see FIG. 6). That is, the multiple recesses 44 include two first recesses 44a.

[0041] The multiple recesses 44 also include second recesses 44b that are located at the same position in the Z-axis direction as the first recesses 44a on the outer peripheral surface 41a of the main body 41 and in a range on one side of the position of the straight pipe portion 51 in the Y-axis direction as viewed from the X-axis direction. Similar to the first recesses 44a, the second recesses 44b of this embodiment are located on each of one side and the other side in the X-axis direction on the outer peripheral surface 41a of the main body 41. That is, the multiple recesses 44 include two second recesses 44b.

[0042] Furthermore, the multiple recesses 44 also include multiple third recesses 44c that are arranged in a range corresponding to the connecting portion 52 in the Z-axis direction on the outer peripheral surface 41a of the main body 41. These multiple third recesses 44c are arranged at intervals in the circumferential direction of the main body 41. In this embodiment, the multiple third recesses 44c are arranged at positions that correspond to the first recesses 44a and the second recesses 44b in the circumferential direction.

[0043] Each of the pair of protrusions 45 protrudes from between the first recess 44a and the second recess 44b in the radial direction of the main body 41 (in the example of this embodiment, the Y-axis direction).

[0044] In the nozzle 1 configured as described above, the cap K is attached to the nozzle 1 so that the nozzle body 4 passes through the hole K1 of the cap K, with the base 2 and the extension 3 inserted into the hose H through holes formed in the hose H (see FIG. 8). Then, the cap K rotates around the nozzle body 4, so that the peripheral edge of the hole of the hose H is sandwiched between the extension 3 of the nozzle 1 and the cap K, thereby fixing the nozzle 1 to the hose H.

[0045] This hose H has a plurality of holes formed at predetermined intervals in the longitudinal direction, and a nozzle 1 is disposed in each hole. When water is supplied to the hose H in this state, water is sprayed from each nozzle 1 along the hose H (see, for example, Figure 10).

[0046] The nozzle 1 configured as described above includes a nozzle body 4 having a slit 42 that discharges water (liquid) to the outside, and an internal flow path 5 that extends in the Z-axis direction (first direction), communicates with the slit 42, and guides water to the slit 42. The slit 42 has its width direction in the Z-axis direction and extends along a planar direction perpendicular to the Z-axis direction, and the width d3 of the slit 42 is smaller than the size in the planar direction at the position in the internal flow path 5 where it communicates with the slit 42 (the diameter d1 of the straight pipe portion 51 in the example of this embodiment).

[0047] According to this configuration, nozzle 1 is positioned so that the Z-axis direction is vertical, and water supplied to nozzle 1 is released horizontally from slit 42 of nozzle 1. Moreover, because width d3 of slit 42 is smaller than internal flow path 5, the vertical velocity component of the water released horizontally to the outside from slit 42 is suppressed, thereby suitably reducing the distance over which water is sprayed.

[0048] Furthermore, when multiple nozzles 1 are arranged on the hose H so as to be spaced apart along the length of the hose H, the water pressure inside the hose H decreases as the nozzles move away from the end of the hose H (the water supply position). However, by reducing the slit width in each nozzle 1 and thereby reducing the amount of water released from the slit 42, the amount of decrease in water pressure according to the distance from the supply position can be reduced, making it possible to supply water at the desired water pressure even to nozzles 1 arranged farther from the supply position.

[0049] By making the slit width smaller than the diameter d1 of the straight pipe section 51, as in the nozzle 1 of this embodiment, when the supply pressure is 0.04 MPa, the desired water pressure can be maintained within the hose H up to a position approximately 90 m away from the supply position (i.e., a uniform water pressure distribution is obtained).

[0050] Furthermore, in the nozzle 1 of this embodiment, the internal flow path 5 has a straight pipe section 51 that extends linearly in the Z-axis direction (first direction) from the position where it communicates with the slit 42 toward the upstream side. By having this straight pipe section 51, it is possible to ensure a sufficient fan-shaped spread of water released from the slit 42 when viewed from the Z-axis direction (angle α in FIG. 5), thereby ensuring a sufficient spray range (spray area). In the nozzle 1 of this embodiment, the fan-shaped spread of water (angle α) is approximately 120°.

[0051] Furthermore, in the nozzle 1 of this embodiment, the nozzle body 4 (more specifically, the body 41) is columnar and extends in the Z-axis direction (first direction), and the straight pipe portion 51 is disposed at a position closer to one side of the Y-axis direction (third direction) than the center of the nozzle body 4 in the X-axis direction (second direction). The slit 42 extends in the X-axis direction and extends to the other side of the Y-axis direction from an imaginary line VL passing through the internal flow path 5 at a position where the slit 42 communicates with the slit 42 (see FIG. 5 ). This configuration allows the size of the nozzle body 4 in a planar direction perpendicular to the Z-axis direction (in this embodiment, the outer diameter of the body 41) to be reduced, while ensuring a sufficient distance (see symbol β in FIG. 5 ) from the position where the slit 42 communicates with the internal flow path 5 (straight pipe portion 51) to the position where water is released to the outside, thereby sufficiently suppressing the vertical velocity component of the water released horizontally from the slit 42.

[0052] Furthermore, in the nozzle 1 of this embodiment, the nozzle body 4 is made of resin and has at least one first recess 44a recessed toward the inside of the nozzle body 4 in a range on the outer surface 41a corresponding to at least the straight pipe section 51 in the Z-axis direction (first direction) and in a range on the other side of the straight pipe section 51 in the Y-axis direction (third direction) when viewed from the X-axis direction (second direction).

[0053] If the straight pipe section 51 is deformed or if irregularities occur on the inner peripheral surface of the straight pipe section 51, the fan-shaped spread of water discharged from the slits 42 when viewed from the Z-axis direction will be smaller (the angle α in FIG. 5 will be smaller). However, as in the nozzle 1 of this embodiment, by offsetting the straight pipe section 51 in the Y-axis direction in the nozzle body 4 and providing a recess 44 in the thickened portion, deformation of the straight pipe section 51 due to shrinkage during molding and the occurrence of irregularities on the inner peripheral surface of the straight pipe section 51 can be effectively suppressed, thereby preventing the fan-shaped spread of water discharged from the slits 42 from becoming smaller. In other words, it is possible to suppress a reduction in the water spray range (the angle α of the fan-shaped spread: see FIG. 5) caused by deformation of the straight pipe section 51 of the nozzle 1 or irregularities on the inner peripheral surface.

[0054] Furthermore, in the nozzle 1 of this embodiment, the internal flow path 5 has a thick pipe section 53 extending in the Z-axis direction (first direction) from the upstream end of the straight pipe section 51, and the cross section of the thick pipe section 53 is larger than the cross section of the straight pipe section 51. In this way, by thickening the section of the internal flow path 5 upstream of the straight pipe section 51 in the flow direction (Z-axis direction), the thickness (radial thickness) of the corresponding section of the nozzle body 4 and the thickness (radial thickness) of the base 2 are reduced, thereby reducing shrinkage in that section of the nozzle body 4 during molding, and thereby more suitably reducing deformation of the straight pipe section 51, etc. [Example]

[0055] Here, in order to confirm the effect of the nozzle 1 of the above embodiment, water was sprayed using the nozzle 1, and the irrigation intensity was measured at each position. The results are shown in Figs. 9 and 10.

[0056] FIG. 9 shows the measurement results (distribution of irrigation intensity) when water was supplied to a hose H to which a nozzle was attached at 0.04 MPa and 0.27 L / min, with the vertical and horizontal axes set so that the vertical axis coincides with the X-axis direction of the nozzle and the horizontal axis coincides with the Y-axis direction of the nozzle. The nozzle's position is indicated by N on the vertical axis, and the irrigation intensity is measured in mm / hour. FIG. 10 shows the measurement results (distribution of irrigation intensity) when water was supplied to a hose H to which a plurality of nozzles were attached at 0.04 MPa and 0.27 L / min, with the nozzles arranged in a row (hose H) at 40 cm intervals with the X-axis direction of each nozzle aligned with the longitudinal direction of the hose H, with the vertical and horizontal axes set so that the vertical axis coincides with the X-axis direction of each nozzle and the horizontal axis coincides with the Y-axis direction of each nozzle. The nozzle's position is indicated by N on the vertical axis, and the irrigation intensity is measured in mm / hour. Note that Figure 10 shows the results of measuring the distribution of irrigation intensity in an area narrower than the range of arrangement of the five nozzles in the longitudinal direction of the hose H (the range indicated by N in the vertical direction in Figure 10). For this reason, N, which indicates the nozzle arrangement position, is also indicated in a position outside the range of the vertical axis of the graph (specifically, a position below the vertical axis of the graph in Figure 10).

[0057] From these measurement results, it was confirmed that the nozzle 1 of the above embodiment can spray the liquid widely in the X-axis direction while reducing the spray distance in the Y-axis direction (i.e., it can spray with a large fan-shaped spread (angle α) when viewed in a plane).

[0058] The nozzle of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention. For example, the configuration of one embodiment can be added to the configuration of another embodiment, or part of the configuration of one embodiment can be replaced with the configuration of another embodiment. Furthermore, part of the configuration of one embodiment can be deleted.

[0059] The specific configuration for fixing (attaching) the nozzle 1 to the hose H is not limited. For example, the nozzle 1 in the above embodiment is removably fixed to the hose H using the cap K, but is not limited to this configuration. The nozzle 1 may be configured to be fixed to the hose H without using the cap K. Furthermore, the nozzle 1 may be configured to be fixed to the hose H in a non-removable manner. Furthermore, the specific configuration of the cap K is not limited.

[0060] Furthermore, in the nozzle 1 of the above embodiment, the straight pipe section 51 is disposed at a position (offset position) closer to one side in the Y-axis direction from the center position of the main body 41 in the Y-axis direction when viewed from the X-axis direction, but this configuration is not limited. As long as the distance β (see FIG. 5) from the communication position between the slit 42 and the straight pipe section 51 to the position at which water is released to the outside in the slit 42 (slit outlet) can be secured, the position of the straight pipe section 51 (more specifically, the position in the plane perpendicular to the Z-axis) is not limited.

[0061] Furthermore, in the nozzle 1 of the above embodiment, the thick pipe portion 53 in the internal flow path 5 communicates (connects) with the straight pipe portion 51 via the connecting portion 52, but this configuration is not limited thereto. The thick pipe portion 53 may also directly communicate (connect) with the straight pipe portion 51. Furthermore, the internal flow path 5 may be formed only by the straight pipe portion 51.

[0062] Furthermore, in the nozzle 1 of the above embodiment, the cross-sectional shape of the internal flow path 5 is circular, but is not limited to this configuration. The cross-sectional shape of the internal flow path 5 may be polygonal, elliptical, or the like.

[0063] Furthermore, in the nozzle 1 of the above embodiment, the slit 42 is configured to discharge (spray) the liquid to the other side in the Y-axis direction, but this configuration is not limited thereto. The slit 42 may be configured to discharge the liquid in any direction as long as the direction is along a plane perpendicular to the Z-axis direction. The slit 42 may also be configured to discharge the liquid to both sides in the Y-axis direction. In other words, the slit 42 may be configured so that the width of the slit 42 is smaller than the size of the internal flow path 5 at the position where the slit 42 communicates with the slit 42 (in the above embodiment, the diameter (inner diameter) d1) and the direction in which the liquid is discharged is not limited thereto.

[0064] Furthermore, although the nozzle 1 in the above embodiment sprays water, it may also spray other liquids. Furthermore, the nozzle body 4 does not have to be a columnar shape extending in the Z-axis direction. In other words, the external shape of the nozzle body 4 is not limited. [Explanation of symbols]

[0065] 1... nozzle, 2... base, 2a... outer peripheral surface, 21... first flow path, 22... end surface, 221... first surface, 222... second surface, 22a... opening, 3... extension portion, 31... end surface, 4... nozzle body, 41... body, 41a... outer peripheral surface, 42... slit, 43... second flow path, 44... recess, 44a... first recess (recess), 44b... second recess, 44c... third recess, 45... protrusion, 5... internal flow path, 51... straight pipe portion, 52... connection portion, 53... thick Pipe section, 500... nozzle, 501... rising pipe, 510... mounting section, 520... stepped section, 521... lower section, 521a... horizontal surface, 522... upper section, 522a... vertical surface, 525... hole, 525a, 525b... slit section, C, C1... central axis, d1... diameter (inner diameter) of straight pipe section, d2... diameter (inner diameter) of thick pipe section, d3... width of slit, H... hose, K... cap, K1... hole, VL... imaginary line, α... angle, β... distance

Claims

1. a nozzle body having a slit for discharging liquid to the outside, and an internal flow path extending in a first direction, which is a predetermined direction, communicating with the slit and guiding the liquid to the slit; The slit has the first direction as a width direction and extends along a surface direction perpendicular to the first direction, the width of the slit is smaller than the size of the internal flow path in the planar direction at a position where the slit communicates with the internal flow path, the internal flow path has a straight pipe portion extending linearly in the first direction from the communication position toward the upstream side, the nozzle body has a columnar shape extending in the first direction, the straight pipe portion is disposed at a position shifted toward one side of a center position of the nozzle body in a third direction perpendicular to each of the first direction and the second direction when viewed from a second direction perpendicular to the first direction, The slit extends in the second direction when viewed from the first direction and widens toward the other side in the third direction from an imaginary line passing through the internal flow path at the communicating position.

2. 2. The nozzle according to claim 1, wherein the nozzle body is made of resin and has at least one recess recessed toward the inside of the nozzle body in at least a range on the outer peripheral surface corresponding to the straight pipe portion in the first direction and in a range on the other side of the straight pipe portion in the third direction as viewed from the second direction.

3. the internal flow path has a thick pipe portion extending in the first direction from an upstream end of the straight pipe portion, The nozzle according to claim 1 or 2, wherein the cross section of the thick pipe portion is larger than the cross section of the straight pipe portion. Lu.

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