Spraying device

Abstract

Provided is a shower device capable of realizing a desired water discharge pattern. A shower device having a water spraying plate, in which a plurality of water spraying holes penetrating the water spraying plate are arranged in a circumferential manner at intervals from each other on a water spraying surface of the water spraying plate; when the water spraying surface is viewed in plan, a direction in which a center line connecting an opening center of an upstream end and an opening center of a downstream end of each of the plurality of water spraying holes extends includes an inclination component with respect to a normal line direction of the circumference in each of the water spraying holes; and regarding a size of a through region in which each of the plurality of water spraying holes is penetrated by a straight line from the opening of the upstream end to the opening of the downstream end in a thickness direction of the water spraying plate, a size in a lateral direction in a cross section including the center line is set to be equal to or greater than a prescribed lower limit value and equal to or less than a prescribed upper limit value.

Description

Technical Field

[0001] This invention relates to a spraying device. Background Technology

[0002] In conventional spraying devices, there is a known device, for example, that described in Patent Document 1. The spraying device disclosed in Patent Document 1 includes a spray plate having a rectangular spray surface with a predetermined width and length in its plan view, and a plurality of spray holes formed through the spray surface. The spray direction of each of the plurality of spray holes is from the inside to the outside in the width direction of the spray surface and then outwards in the width direction. With this structure, sprayed water flows outwards in a manner that diffuses from the spray surface.

[0003] Patent Document 1: Japanese Patent Application Publication No. 2016-2243 Summary of the Invention

[0004] Recently, there has been a demand for various water discharge patterns, including the spray pattern disclosed in Patent Document 1. There is still room for improvement in achieving the desired water discharge pattern.

[0005] Therefore, the object of the present invention is to solve the above-mentioned problems and provide a spray device that can achieve the desired water outlet pattern.

[0006] To achieve the above objectives, the spraying device of the present invention includes a spray plate, on the spraying surface of the spray plate, a plurality of spray holes passing through the spray plate are spaced apart from each other and arranged in a circumferential shape; when the spraying surface is viewed in plan view, the direction extending by the center line connecting the center of the opening at the upstream end and the center of the opening at the downstream end of each of the plurality of spray holes includes an inclination component relative to the normal direction of the circumference of each spray hole; regarding the size of the through area through which the opening at the upstream end of each of the plurality of spray holes passes in a straight line along the thickness direction of the spray plate from the opening at the upstream end to the opening at the downstream end, the lateral dimension in the cross section including the center line is set to a predetermined lower limit value or higher and a predetermined upper limit value or lower.

[0007] Invention Effects

[0008] The spray device according to the present invention can achieve the desired water output pattern. Attached Figure Description

[0009] Figure 1 This is a perspective view of the spraying device according to Embodiment 1.

[0010] Figure 2 This is a schematic plan view of the water spray plate in Embodiment 1.

[0011] Figure 3 yes Figure 2 A magnified portion of the image.

[0012] Figure 4 yes Figure 2 AA view.

[0013] Figure 5 This is a diagram showing the shape of the sprayed water from the spray device in Embodiment 1.

[0014] Figure 6 This is a schematic plan view of the water spray plate of the comparative example.

[0015] Figure 7 This is a schematic plan view of the water spray plate in Embodiment 1.

[0016] Figure 8 yes Figure 7 BB view.

[0017] Figure 9 It is a graph showing the results of an experiment conducted using the spray device of Embodiment 1 to show the relationship between the lateral dimension of the through space and the water outlet angle.

[0018] Figure 10 This is a perspective view of the spraying device according to Embodiment 2.

[0019] Figure 11A This is a schematic longitudinal sectional view of the water spray hole in a modified example.

[0020] Figure 11B This is a schematic longitudinal sectional view of the spray nozzle in another variation.

[0021] Figure 11C This is a schematic longitudinal sectional view of the water spray hole in another variation.

[0022] Figure 11D This is a schematic longitudinal sectional view of the water spray hole in another variation.

[0023] Figure 12 This is a plan view of the spray device with a spray plate according to Embodiment 3.

[0024] Figure 13 From and Figure 12 View of the spray plate from the opposite side (back view).

[0025] Figure 14 yes Figure 13 A magnified portion of the image.

[0026] Figure 15 It means Figure 13 A three-dimensional view of the cross-section at a specified position of the water spray plate.

[0027] Figure 16 yes Figure 12 , Figure 13 An enlarged view of part I.

[0028] Figure 17A yes Figure 16 The KK view of the first through hole.

[0029] Figure 17B yes Figure 16 LL view of the second through hole.

[0030] Figure 17C yes Figure 16 MM view of the third through hole.

[0031] Figure 18 This is a diagram illustrating an example of the water discharge pattern of the spray plate in Embodiment 3.

[0032] Figure 19A It means and Figure 17A A diagram of the through area of ​​the first through hole with the same cross section.

[0033] Figure 19B It means and Figure 17B A diagram of the through area of ​​the second through hole with the same cross section.

[0034] Figure 19C It means and Figure 17C A diagram of the through area of ​​the third through hole with the same cross section.

[0035] Label Explanation

[0036] 2. Spraying device

[0037] 4. Sprayer board

[0038] 5. Water spray surface

[0039] 8. Ceiling

[0040] 9. Circumference

[0041] 10 water jet holes

[0042] 11 Centers

[0043] 12 Downstream opening

[0044] 14. Upstream opening

[0045] 16 Opening Center

[0046] 18 Opening Center

[0047] 20 center line

[0048] 21 Back

[0049] 22 First bend

[0050] 23. Vertical direction

[0051] 24 Second bend

[0052] 30 water spray plates

[0053] 32 water spray holes

[0054] 32A Downstream Opening

[0055] 32B Upstream opening

[0056] 34. Straight section

[0057] 36 Centerline

[0058] 40 spray plates

[0059] 42 and 44 plate components

[0060] 46, 48 openings

[0061] 49 Centerline

[0062] 50 spray plates

[0063] 52 water spray holes

[0064] 52A Downstream Opening

[0065] 52B Upstream Opening

[0066] 54 First Straight Section

[0067] 56. Second straight section

[0068] 58 Center Line

[0069] 60 spray plates

[0070] 62 water spray holes

[0071] 62A Downstream Opening

[0072] 62B Upstream Opening

[0073] 64, 66 Straight sections

[0074] 68 Centerline

[0075] 70 Spraying device

[0076] 72 Sprayer Plate

[0077] 74 Water spray surface

[0078] 76 water jet holes

[0079] 80 Spraying device

[0080] 81 First through hole group

[0081] 81J First Through Hole (First Spray Hole)

[0082] 82 Group of 2 Through Holes

[0083] 82J Second Through Hole (Second Spray Hole)

[0084] 83 Group of 3 Through Holes

[0085] 83J Third Through Hole (Third Spray Hole)

[0086] 84 Sprayer Plate

[0087] 85 spray surface

[0088] 86A Downstream Opening

[0089] 86B upstream opening

[0090] 87. Exhaust direction (centerline)

[0091] 88A Downstream Opening

[0092] 88B Upstream Opening

[0093] 89. Exhaust direction (centerline)

[0094] 90A Downstream Opening

[0095] 90B Upstream Opening

[0096] 91. Exhaust direction (centerline)

[0097] 92, 93, 94 circumference

[0098] 96 Convergence Region

[0099] 98 Divergence Region

[0100] 100 spray plates

[0101] 102 water jet surfaces

[0102] 104 water jet holes

[0103] 105 Center

[0104] 106 Downstream opening

[0105] 107 circumference

[0106] 108 Upstream opening

[0107] 109 Opening Center

[0108] 110 Centerline

[0109] 111 Opening Center

[0110] 200 connecting areas

[0111] 202 First inner edge

[0112] 204 Second inner edge

[0113] 206 Water flow (vertical direction)

[0114] 210 Sprayer Board

[0115] 212 water jet holes

[0116] 212A Downstream Opening

[0117] 212B Upstream Opening

[0118] 214 Straight Section

[0119] 215 Bending section

[0120] 216 Straight Section

[0121] 217 Bending section

[0122] 218 Centerline

[0123] 220 Back

[0124] 222 First Through Area

[0125] 224 Second Through Area

[0126] 226 Third Through Area

[0127] F, G plane direction

[0128] T and X thickness directions

[0129] P Normal direction

[0130] P1 tilt component relative to the normal direction

[0131] Q Tangent direction

[0132] Q1 Inclination component relative to the tangent direction

[0133] R circumferential

[0134] Circumferential direction on one side of R1

[0135] Circumferential direction on the other side of R2

[0136] U1, U2, U3 normal directions

[0137] Inclination components of α1, α2, and α3 relative to the normal direction

[0138] Inclination components of β1, β2, and β3 relative to the thickness direction

[0139] Horizontal dimensions X, X1, X2, X3 Detailed Implementation

[0140] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to these embodiments.

[0141] (Implementation Method 1)

[0142] Figure 1 This is a schematic perspective view of the spray device 2 according to Embodiment 1.

[0143] Figure 1 The shower device 2 shown is a bathroom shower device used in a bathroom. Figure 1 The sprinkler system 2 shown is specifically an overhead sprinkler system that is fixedly installed on the ceiling 8 of the bathroom. For example... Figure 1 As shown, the spray device 2 includes a water spray plate 4.

[0144] The spray plate 4 is a plate-shaped component used for spraying water. The spray plate 4 has a spray surface 5. The spray surface 5 is the surface of one side of the spray plate 4, which is arranged to face downwards. The "spray surface" can also be called the "water outlet surface" or "flow surface", etc.

[0145] like Figure 1 As shown, a plurality of spray holes 10 are formed on the spray surface 5. The spray holes 10 are through holes that penetrate the spray plate 4 and extend from the spray surface 5, which is the surface (outflow surface) of the spray plate 4, to the back surface (inflow surface). Figure 1 The multiple water spray holes 10 shown are configured in a circumferential shape.

[0146] In the spray device 2 of Embodiment 1, the structure of the spray nozzle 10 has been carefully designed. Specific use... Figures 2-5 Please provide an explanation.

[0147] Figure 2 This is a schematic plan view of the water spray plate 4. Figure 2 In the diagram, multiple water spray holes 10 are schematically represented, and the number of water spray holes 10 is also simplified.

[0148] like Figure 2 As shown, when the water spray surface 5 is viewed in plan view, a plurality of water spray holes 10 are arranged at intervals between each other, and are arranged in a circular shape to overlap with the circumference 9, which is an imaginary line. The center 11 of the circumference 9 is the center of the water spray surface 5.

[0149] The spray holes 10 are respectively formed with a downstream opening 12 as the downstream end and an upstream opening 14 as the upstream end. The downstream opening 12 is opened on the spray surface 5, and the upstream opening 14 is opened on the back side of the spray plate 4 opposite to the spray surface 5. Water passing through the spray holes 10 flows from the upstream opening 14 toward the downstream opening 12 (refer to reference numeral 20). In Embodiment 1, the downstream opening 12 and the upstream opening 14 are circular openings with approximately the same radius.

[0150] In such Figure 2 When the water spray surface 5 is viewed in plan view, the downstream opening 12 and upstream opening 14 of each water spray hole 10 are offset and configured. Specifically, using Figure 3 , Figure 4 Please provide an explanation.

[0151] Figure 3 yes Figure 2 The enlarged view shows one water jet hole (10). Figure 4 yes Figure 2 AA view.

[0152] like Figure 3 , Figure 4 As shown, the center of the opening 16 is located at the center of the downstream opening 12, and the center of the opening 18 is located at the center of the upstream opening 14. In Embodiment 1, the center of the downstream opening 12, 16, is set to overlap with the circumference 9. Figure 3 , Figure 4 As shown, the downstream opening 12 and the upstream opening 14 are configured by offsetting the opening center 16 and the opening center 18 along the surface direction F of the spray plate 4.

[0153] like Figure 4 As shown, the water spray hole 10 in Embodiment 1 is formed by etching a plate-shaped component from both sides. The inner peripheral surface of the water spray plate 4 forming the water spray hole 10 has a first bend 22 and a second bend 24. The first bend 22 is formed by etching the water spray plate 4 from the water spray surface 5. The second bend 24 is formed by etching the water spray plate 4 from the back surface 21.

[0154] Here, let the straight line connecting the opening center 16 and the opening center 18 be called the center line 20. The center line 20 is approximately in the same direction as the water flow in the spray hole 10. Since the opening centers 16 and 18 are offset in the surface direction F of the spray plate 4 as described above, the center line 20 is perpendicular to the thickness direction T of the spray plate 4. Figure 4 It extends in a slanted manner.

[0155] Back Figure 3When the spray surface 5 is viewed in planar view, the direction extending from the centerline 20 has an inclination component P1 relative to the normal direction P of the circumference 9, and also an inclination component Q1 relative to the tangent direction Q of the circumference 9. In particular, by having the inclination component P1 relative to the normal direction P, a spray pattern different from that of ordinary spray water can be achieved. Specific applications... Figure 5 Please provide an explanation.

[0156] Figure 5 This is a diagram illustrating an example of the spray pattern of the spray device 2 in Embodiment 1. (See diagram below.) Figure 5 As shown, a membrane is sprayed from each of the multiple water jets 10, which rotates in the circumferential direction R on one side and flows downward.

[0157] In implementation method 1, particularly as Figure 3 As shown, let the inclination component P1 of the centerline 20 relative to the normal direction P of the circle 9 be the direction toward the circumferential direction R1, and as... Figure 2 The diagram shows an inclination component oriented in the same circumferential direction R1 in all the water jets 10. This ensures that the direction of the water jets from the water jets 10 swirls in the same circumferential direction R1, producing a result such as... Figure 5 The spiral flow shown enables a well-appearing spray of water. Furthermore, in Embodiment 1, the case where the inclination component P1 of the centerline 20 is unified as circumferential R1 was described, but it can also be modified to a design change such as circumferential R2 in the opposite direction to circumferential R1.

[0158] Regarding the tilt component Q1 of centerline 20, it will be as follows: Figure 3 The direction in which the centerline 20 extends from the upstream side to the downstream side is set to be further away from the center 11 of the circumference 9 than the tangent direction Q of the circumference 9. Figure 2 The direction of ). In addition, such as Figure 2 As shown, the tilt direction is set to be the same in all the water jets 10. This unifies the direction, causing the water jetted from the water jets 10 to travel away from the center 11 of the circumference 9, and produces a... Figure 5 The flow shown diffuses outwards as it moves downwards. As a result, a spiral flow is generated that diffuses outwards from the spray hole 10 while swirling downwards in the circumferential direction R, resulting in a well-appearing spray water output.

[0159] Figure 3 The angle of the tilt component P1 shown can be set to, for example, 5 degrees or more and 175 degrees or less. This allows for the generation of a flow with a suitable tilt angle.

[0160] also, Figure 4The angle α between the centerline 20 and the vertical direction 23 can be set to, for example, 5 degrees or more and 45 degrees or less. This allows for the generation of a flow with a suitable angle of inclination.

[0161] also, Figure 2 The angle β formed by the centerlines 20 of two adjacent water jets 10 can be set to, for example, 0.15 degrees or more and 175 degrees or less. This allows for an appropriate setting of the spacing between the water jets 10. Simultaneously, it prevents the water jets from the water jets 10 from merging immediately, creating a... Figure 5 The spray membrane shown can achieve a good-looking spray water output.

[0162] Next, in Figure 6 The structure of the comparison example is shown in the middle. Figure 6 This is a schematic plan view of the water spray plate 100 of the comparative example.

[0163] like Figure 6 As shown, a plurality of spray holes 104 are formed on the spray surface 102 of the spray plate 100. The plurality of spray holes 104 are arranged in a circumferential shape and are arranged on a circumference 107 with the center 105 of the spray surface 102 as a reference.

[0164] The water jet 104 forms a downstream opening 106 and an upstream opening 108. The straight line connecting the center 109 of the downstream opening 106 and the center 111 of the upstream opening 108 is designated as the centerline 110. For example... Figure 6 As shown, when the water spray surface 102 is viewed in plan view, the centerline 110 of the water spray hole 104 is aligned with the normal direction of the circumference 107 within the water spray hole 104. That is, the direction in which the centerline 110 extends in the plan view does not have an inclined component relative to the normal direction of the circumference 107. With this structure, the water sprayed from the plurality of water spray holes 104 diffuses outwards away from the center 105 while traveling downwards without swirling in the circumferential direction S.

[0165] In contrast, according to Embodiment 1, the spray device 2 can generate a circumferential component R by making the center line 20 have an inclination component P1 relative to the normal direction P of the circumference 9, and can achieve a spray water pattern that is different from the usual spray water pattern.

[0166] In this embodiment, the focus is also on the lateral dimension of the through region from the upstream opening 14 to the downstream opening 12 of the spray hole 10, which extends in a straight line along the thickness direction T. A lower limit and an upper limit value for this dimension are set to achieve the desired water outlet pattern. (Specific application details follow.) Figure 7 , Figure 8 Please provide an explanation.

[0167] Figure 7 This is a schematic plan view of the water spray plate 4 in Embodiment 1. Figure 8 yes Figure 7 BB view. Figure 8 The cross section shown is with Figure 4 The same cross section is the cross section that includes the centerline 20 mentioned above.

[0168] like Figure 7 , Figure 8 As shown, in each water spray hole 10, there is a through region 200 that extends through the water spray plate 4 in the thickness direction T. The through region 200 is a region in which the upstream opening 14 to the downstream opening 12 of the water spray hole 10 extends in a straight line along the thickness direction T of the water spray plate 4.

[0169] exist Figure 8 In the cross-section shown, the through region 200 has a dimension X in the transverse direction along the surface direction F of the spray plate 4. The dimension X is defined by the distance in the surface direction F between the first inner edge portion 202 protruding from the inside of the first curved portion 22 and the second inner edge portion 204 protruding from the inside of the second curved portion 24.

[0170] In this embodiment, regarding Figure 8 The transverse dimension X of the through region 200 in the cross section shown is set with a lower limit and an upper limit. The dimension X of the through region 200 of each of the multiple water spray holes 10 is set to be above the lower limit and below the upper limit to form multiple water spray holes 10.

[0171] With this design, in the structure where water is deflected from the spray hole 10, it is possible to suppress water blockage in the spray hole 10 while ensuring the deflected water angle.

[0172] By setting dimension X above the lower limit, sufficient space is ensured for water to pass through the nozzle 10 along the centerline 20. This allows water to pass smoothly while preventing blockage. Furthermore, by setting dimension X below the upper limit, the flow rate of water 206 that needs to pass vertically downward along the thickness direction T is limited when water passes through the nozzle 10 along the centerline 20, ensuring a deflection angle of the water outlet relative to the thickness direction T.

[0173] exist Figure 9 The image shows an example of experimental results when an experiment was conducted using the spray plate 4 of Embodiment 1 to investigate the relationship between the lateral dimension X of the through area 200 and the water outlet angle. Figure 9 This is a graph showing the dimension X (unit: mm) on the horizontal axis and the water outlet angle (unit: degrees) on the vertical axis. Detailed experimental conditions are omitted.

[0174] like Figure 9As shown, a target water outlet angle is preset for the water outlet angle from the spray hole 10. When the dimension X is 0.4 mm or less, an outlet angle above the target angle is achieved. On the other hand, when the dimension X is larger than 0.4 mm, the outlet angle becomes smaller and falls below the target angle. If it falls below the target angle, the water tends to flow vertically downwards, making it difficult to achieve a deflected outlet angle.

[0175] If the size X increases, the water outlet angle decreases because, as shown in the reference... Figure 8 As explained, the flow rate of water 206 that passes vertically downward along the thickness direction T increases, and the vertical downward flow becomes dominant.

[0176] In this embodiment, the lower limit of dimension X is set to 0.1 mm, and the upper limit is set to 0.4 mm. In each of the plurality of water spray holes 10, the lateral dimension X of the through region 200 is controlled to be within the range of 0.1 mm or more and 0.4 mm or less to form a plurality of water spray holes 10. With this setting, when water is discharged at an angle from the water spray holes 10, water blockage can be suppressed while achieving an angled water discharge.

[0177] In this embodiment, the setting value (e.g., 0.3 mm) is determined using a value between a lower limit of 0.1 mm and an upper limit of 0.4 mm, and the plurality of water jet holes 10 are formed in such a way that the dimension X of the through region 200 in each of the plurality of water jet holes 10 is approximately the same. By setting it in this way, by unifying the lateral dimension X of the through region 200, the water outlet angle and flow rate from each water jet hole 10 can be made uniform.

[0178] As described above, in the spray device 2 of this embodiment, the dimensions of the through area 200 in which the upstream opening 14 to the downstream opening 12 of each of the plurality of spray holes 10 are connected in a straight line along the thickness direction T of the spray plate 4 are such that the lateral dimension X in the cross section including the center line 20 is above a predetermined lower limit and below a predetermined upper limit, thereby forming a plurality of spray holes 10.

[0179] With this structure, when water is deflected from the spray hole 10, it is possible to suppress water blockage while ensuring the deflection angle, thus achieving the desired water outlet pattern.

[0180] (Implementation Method 2)

[0181] The spraying apparatus according to Embodiment 2 of the present invention will be described. In Embodiment 2, the differences from Embodiment 1 will be mainly described, and the descriptions that are repeated in Embodiment 1 will be omitted.

[0182] In Embodiment 1, the plurality of water spray holes 10 are arranged in a circumferential shape, while in Embodiment 2, in addition to the plurality of water spray holes 10, other plurality of water spray holes are formed in a circumferential shape.

[0183] Figure 10 This is a perspective view of the spray device 70 according to Embodiment 2. Figure 10 The spray device 70 shown includes a spray plate 72. On the spray surface 74 of the spray plate 72, in addition to the group of multiple spray holes 10, another group of spray holes 76 is formed. When viewed in plan view of the spray surface 74, the multiple spray holes 76 are arranged in a circumferential shape, concentric with and spaced apart from the first spray hole 10. The multiple spray holes 10 are the first spray holes, and the multiple spray holes 76 are the second spray holes. In embodiment 2, the second spray holes 76 are disposed inside the first spray hole 10. With this structure, by emitting water from the spray holes 10 and 76, a double-sprayed film can be formed, achieving a spray water emission pattern different from the usual.

[0184] exist Figure 10 In the spray device 70 shown, the second spray holes 76 are also set with the same tilt angle as the first spray holes 10 described in Embodiment 1. Specifically, it is designed such that, when viewed in plan view of the spray surface 74, the direction extending from the center line connecting the opening centers of the upstream and downstream ends of each of the second spray holes 76 includes a tilt component relative to the normal direction of the circumference of each of the second spray holes 76. With this structure, not only the multiple spray holes 10, but also the multiple spray holes 76 can generate a spiral flow, enabling other spray patterns.

[0185] In addition, Figure 10 In the spray device 70 shown, the second spray hole 76 is constructed using the same lower and upper limits as those described in Embodiment 1 regarding the dimension X of the through region 200 of the first spray hole 10. With this structure, not only the first spray hole 10, but also the second spray hole 76, can ensure a deflected water outlet angle while suppressing water blockage in the spray hole 10, thus achieving the desired water outlet pattern.

[0186] Furthermore, the present invention is not limited to the above-described embodiments and can be implemented in various other ways. For example, in Embodiment 1, the water spray holes 10 are formed by etching, and the following are provided: Figure 4 The water jet hole 10 with curved portions 22 and 24 has been illustrated, but it is not limited to this case. Water jet holes can also be formed by any method other than etching; for example, they can be formed as shown in the diagram. Figures 11A to 11D The shape of the spray nozzle is shown.

[0187] exist Figure 11A In the water spray plate 30 shown, the inner peripheral surface of the water spray plate 30 forming the water spray holes 32 has a straight portion 34 that is inclined in a straight line. The center line 36, which is the straight line connecting the opening center of the downstream opening 32A and the opening center of the upstream opening 32B of the water spray holes 32, extends in a direction inclined relative to the vertical direction. The water spray holes 32 having such a shape can be formed, for example, by machining based on 5-axis machining, laser machining, etc.

[0188] Figure 11B The water spray plate 40 shown is constructed by stacking two plate components 42 and 44. Plate component 42 forms an opening 46, and plate component 44 forms an opening 48. A water spray hole 45 is formed by the openings 46 and 48. The openings 46 and 48 are offset in the surface direction G of the water spray plate 40. The centerline 49, which is the straight line connecting the center of the opening at the upstream end of the opening 46 and the center of the opening at the downstream end of the opening 48, extends in a direction inclined relative to the vertical direction. The water spray hole 45 with such a shape can be formed, for example, by pressure joining of the plate components 42 and 44.

[0189] exist Figure 11C In the water spray plate 60 shown, the inner peripheral surface of the water spray plate 60 forming the water spray holes 62 has straight sections 64 and 66 with asymmetrical cross-sectional shapes. The straight section 64 extends along the Y direction, which is the thickness direction of the water spray plate 60, and the straight section 66 extends in a direction inclined relative to the Y direction. The center line 68, which is the straight line connecting the opening center of the downstream opening 62A and the opening center of the upstream opening 62B of the water spray hole 62, extends in a direction inclined relative to the vertical direction. The water spray hole 62 with such a shape can be formed, for example, by resin molding.

[0190] exist Figure 11D In the spray plate 210 shown, the inner circumferential surface of the spray plate 210 forming the spray holes 212 has straight portions 214 and 216 and curved portions 215 and 217 with asymmetrical cross-sectional shapes. The straight portion 214 extends along the Y direction, which is the thickness direction of the spray plate 210, and the straight portion 216 extends in a direction inclined relative to the Y direction. The curved portion 215 bends outward from the straight portion 214 toward the upstream opening 212B, and the curved portion 217 bends outward from the straight portion 216 toward the upstream opening 212B. The centerline 218, which is the straight line connecting the opening center of the downstream opening 212A of the spray hole 212 and the opening center of the upstream opening 212B, extends in a direction inclined relative to the vertical direction. The spray holes 212 with such a shape can be formed, for example, by resin molding.

[0191] exist Figures 11A to 11DThe water jet holes 32, 45, 62, and 212 shown can also be designed with respect to center lines 36, 49, 68, and 218 to achieve the same effect. Figure 3 The tilt component P1 shown is relative to the normal direction P of circle 9, to generate the same... Figure 5 The water flow shown is the same.

[0192] Furthermore, in implementation method 1, for example... Figure 3 The description shows a case where the centerline 20 of each spray hole 10 extends from the upstream side to the downstream side in a direction further away from the center 11 of the circumference 9 than the tangent direction Q of the circumference 9 of each spray hole 10, but this is not a limitation. For example, when viewed in plan view of the spray surface 5, the centerline 20 of each spray hole 10 may extend from the upstream side to the downstream side in a direction closer to the center 11 of the circumference 9 than the tangent direction Q of the circumference 9 of each spray hole 10. In this case, a spray film that narrows inward from the multiple spray holes 10 can be formed. Alternatively, when viewed in plan view of the spray surface 5, the direction in which the centerline 20 of each spray hole 10 extends may be aligned with the tangent direction Q of the circumference 9 of each spray hole 10. In this case, the tilt angle of the spray hole 10 can be set based on the tangent direction Q of the circumference 9, making the design easier.

[0193] Furthermore, in implementation method 1, for Figure 3 The angles of tilt component P1 and tilt component Q1 are shown. Figure 4 The example illustrates the case where the angle α is the same value in all the spray holes 10, but this is not a limitation. Different values ​​can also be set for each angle in each spray hole 10.

[0194] Furthermore, in Embodiment 2, the case of two groups of spray holes with multiple spray holes 10 and multiple spray holes 76 was described, but it is not limited to this case, and other groups of spray holes may also be provided. That is, a membrane with three or more layers of spray can also be formed. An example of a structure that forms a membrane with three layers of spray will be described in Embodiment 3 below.

[0195] Furthermore, in embodiments 1 and 2, the case where the spray device 2 is a top-mounted spray device fixed to the ceiling 8 of the bathroom was described, but it is not limited to this case. For example, it can be any spray device such as a handheld spray device that the user holds in their hand.

[0196] The above-described variations can also be applied to the following implementation method 3.

[0197] (Implementation Method 3)

[0198] The water spray plate and the spraying device equipped with it according to Embodiment 3 of the present invention will be described. In Embodiment 3, the differences from Embodiments 1 and 2 will be mainly described, and the descriptions that are repeated in Embodiments 1 and 2 will be omitted.

[0199] In Embodiment 1, the group of water spray holes 10 is arranged in a circumferential shape. In Embodiment 2, the group of water spray holes 10 and the group of water spray holes 76 are each arranged in a circumferential shape. However, in Embodiment 3, the group of three water spray holes is arranged in a circumferential shape.

[0200] Figure 12 This is a plan view of the spray device 80 according to Embodiment 3. Figure 12 The spray device 80 shown includes a spray plate 84, on which three groups of through holes 81, 82, and 83 are formed on the spray surface 85 of the spray plate 84. The "through holes" can also be called "spray holes". Figure 12 The sprinkler device 80 shown is a sprinkler device used as a faucet, for example, in a washroom or kitchen.

[0201] The first through-hole group 81 consists of a plurality of through holes arranged in a circumferential shape on the outermost side; the second through-hole group 82 consists of a plurality of through holes arranged in a circumferential shape in the center; and the third through-hole group 83 consists of a plurality of through holes arranged in a circumferential shape on the innermost side. The second through-hole group 82 is located inside the first through-hole group 81, and the third through-hole group 83 is located inside the second through-hole group 82.

[0202] In embodiment 3, each through hole constituting the first through hole group 81, the second through hole group 82, and the third through hole group 83 is circular in plan view. Furthermore, the number of through holes constituting the first through hole group 81, the second through hole group 82, and the third through hole group 83 is the same. Additionally, each through hole in the first through hole group 81, the second through hole group 82, and the third through hole group 83 is arranged in a row along the radial direction H of the water spray surface 85.

[0203] exist Figure 13 The middle indicates from and Figure 12 A plan view of the spray plate 84 viewed from the opposite side (back 220).

[0204] like Figure 13 As shown, when the back surface 220 is viewed in plan view, each through hole constituting the first through hole group 81, the second through hole group 82, and the third through hole group 83 has an opening shape that is different from a circle. In Embodiment 3, the opening shape of each through hole on the back surface 220 is an elongated hole shape, which is set in an orientation that is uniformly inclined relative to the radial direction H. The inclination angle of the elongated hole shape of each of the first through hole group 81, the second through hole group 82, and the third through hole group 83 is set to be different from each other.

[0205] Will Figure 13 A portion of the enlarged image shows... Figure 14 In the middle, it will indicate Figure 13 The perspective view of the cross-section at the specified position of the water spray plate 84 shown is presented in... Figure 15 In the middle, Figure 12 , Figure 13 An enlarged view of part I is shown in Figure 16 middle.

[0206] like Figure 14 , Figure 15 As shown, the openings on the upstream side of each through hole constituting the first through hole group 81, the second through hole group 82, and the third through hole group 83 are elongated, while the openings on the downstream side are circular, exhibiting a conical shape that narrows from upstream to downstream. In such a manner... Figure 14 When the back surface 220 is viewed in plan view, the elongated hole shape on the upstream side of each through hole includes the overall circular shape on the downstream side. The elongated hole shape is a combination of an arc shape and a straight line shape.

[0207] like Figure 16 As shown, the first through hole (first spray hole) 81J constituting the first through hole group 81 is arranged on the circumference 92, and forms a downstream opening 86A as the downstream end and an upstream opening 86B as the upstream end. The downstream opening 86A is a circular opening opened on the spray surface 85, and the upstream opening 86B is an elongated opening opened on the back surface 220. Water passing through the first through hole 81J flows from the upstream opening 86B toward the downstream opening 86A in the spray direction 87. The spray direction 87 is approximately aligned with the center line connecting the opening center of the upstream opening 86B and the opening center of the downstream opening 86A.

[0208] Similarly, the second through hole (second spray hole) 82J constituting the second through hole group 82 is arranged on the circumference 93, and forms a downstream opening 88A as the downstream end and an upstream opening 88B as the upstream end. The downstream opening 88A is circular in shape on the spray surface 85, and the upstream opening 88B is elongated in shape on the back surface 220. Water passing through the second through hole 82J flows from the upstream opening 88B toward the downstream opening 88A in the spray direction 89. The spray direction 89 is approximately aligned with the centerline connecting the opening centers of the upstream opening 88B and the downstream opening 88A.

[0209] Similarly, the third through hole (third spray hole) 83J constituting the third through hole group 83 is arranged on the circumference 94, forming a downstream opening 90A as the downstream end and an upstream opening 90B as the upstream end. The downstream opening 90A is circular in shape on the spray surface 85, and the upstream opening 90B is elongated in shape on the back surface 220. Water passing through the third through hole 83J flows from the upstream opening 90B toward the downstream opening 90A in the spray direction 91. The spray direction 91 is approximately aligned with the centerline connecting the opening centers of the upstream opening 90B and the downstream opening 90A.

[0210] Similar to embodiments 1 and 2, the ejection directions 87, 89, and 91 of the first through hole 81J, the second through hole 82J, and the third through hole 83J all contain tilt components α1, α2, and α3 relative to the normal directions U1, U2, and U3 of each circumference 92, 93, and 94. Therefore, water is ejected in a "spiral" manner from the first through hole group 81, the second through hole group 82, and the third through hole group 83, achieving a triple spiral water ejection pattern.

[0211] In embodiment 3, in particular, the ejection directions 87, 89, and 91 of the first through hole 81J, the second through hole 82J, and the third through hole 83J are all directed toward the center relative to the tangential directions of each circumference 92, 93, and 94. That is, the water ejected from the first through hole 81J, the second through hole 82J, and the third through hole 83J is directed toward the center of the spray plate 85.

[0212] Furthermore, in Embodiment 3, the shapes of each through hole 81J, 82J, and 83J are set such that the tilt components α1, α2, and α3 with respect to the normal directions U1, U2, and U3 are in the relationship α1>α2>α3. That is, the tilt component α1 of the ejection direction 87 with respect to the normal direction U1 is larger than the tilt component α2 of the ejection direction 89 with respect to the normal direction U2, and the tilt component α2 of the ejection direction 89 with respect to the normal direction U2 is larger than the tilt component α3 of the ejection direction 91 with respect to the normal direction U3.

[0213] By setting these tilt components α1, α2, and α3, the outermost through-holes 81J, 82J, and 83J have a greater component traveling in the circumferential rotational direction, causing water to fall towards the center of the downward-facing spray plate 84. The water ejected from the first through-hole group 81, the second through-hole group 82, and the third through-hole group 83 temporarily converges at the center before dispersing away from it. This achieves a triple spiral water discharge pattern.

[0214] Next, in Figure 17A , Figure 17B , Figure 17CThe figure shows a longitudinal sectional view of the first through hole 81J, the second through hole 82J, and the third through hole 83J. Figure 17A yes Figure 16 KK view of the first through hole 81J, Figure 17B This is the LL view of the second through hole 82J. Figure 17C This is a MM view of the third through hole 83J.

[0215] like Figure 17A As shown, the water ejection direction 87 of the first through hole 81J has an inclination component β1 relative to the thickness direction T of the spray plate 84. Similarly, as Figure 17B As shown, the water ejection direction 89 of the second through hole 82J has an inclination component β2 relative to the thickness direction T, as... Figure 17C As shown, the water ejection direction 91 of the third through hole 83J has an inclination component β3 relative to the thickness direction T. The inclination components β1, β2, and β3 are all as follows: Figure 16 The component shown is oriented toward the center side of the water jet surface 85.

[0216] In embodiment 3, the shapes of each through hole 81J, 82J, and 83J are specifically designed such that the tilt components β1, β2, and β3 with respect to the thickness direction T are in the relationship β1>β2>β3. That is, the tilt component β1 of the ejection direction 87 is larger than the tilt component β2 of the ejection direction 89, and the tilt component β2 of the ejection direction 89 is larger than the tilt component β3 of the ejection direction 91.

[0217] By setting these tilt components β1, β2, and β3, the outermost through-holes 81J, 82J, and 83J have a greater component of propagation in the direction parallel to the water spray surface 85, causing the water to fall downwards towards the center of the spray plate 84. When the water ejected from the first through-hole group 81, the second through-hole group 82, and the third through-hole group 83 forms a spiral flow, the outermost through-holes emit water with a stronger rotational component, flowing towards the center of the spray plate 84, converging at the center, and then diverging outwards. This triple spiral water discharge pattern can be achieved.

[0218] Through the structure of the through holes 81J, 82J, and 83J described above, it is possible to form a structure like... Figure 18 The flow is shown as a triple spiral. (Example) Figure 18As shown, in the through-hole groups 81, 82, and 83, the outermost through-hole group has a stronger lateral component in the direction parallel to the water jet surface 85. The water jetted from the first through-hole group 81 has a stronger lateral component than the water jetted from the second through-hole group 82, and the water jetted from the second through-hole group 82 has a stronger lateral component than the water jetted from the third through-hole group 83. Since the water jetted from through-hole groups 81, 82, and 83 all fall towards the center, after temporarily converging in the convergence region 96, it diverges away from the center from the divergence region 98. When the water diverges in the divergence region 98, the outermost through-hole groups 81, 82, and 83 diverge further away from the center.

[0219] This water spray pattern not only enhances aesthetics but also allows for the separate use of water sprayed with a larger contact area, such as in the convergence zone 96, and water sprayed with a smaller contact area, such as in the dispersion zone 98, depending on the intended use. For example, when washing fingertips or small dirt, simply placing the object in the convergence zone 96 allows for efficient washing of the concentrated water area. Conversely, placing the object in the dispersion zone 98 allows for the rapid rinsing of larger areas such as the palms or arms. Furthermore, when the spray device 80 is installed in a large water tank, the dispersion zone 98 effectively rinsing the entire tank.

[0220] Furthermore, if water is sprayed into a circular bucket in the manner described in Embodiment 3, a vortex flow can be generated within the bucket, enabling effective washing of handkerchiefs and similar items. Additionally, the mixing of detergent is improved when detergent is added.

[0221] Furthermore, according to the spray pattern of Embodiment 3, since it is a triple spiral flow, it can generate wind around it. For example, when used as a shower device in a bathroom, the user can feel the wind.

[0222] In Embodiment 3, similar to Embodiments 1 and 2, the focus is on the lateral dimension of the through region extending along the thickness direction T from the upstream opening to the downstream opening of the spray holes 81J, 82J, and 83J. By setting a lower limit and an upper limit value for this dimension, the desired water outlet pattern is achieved. Specifically, using... Figures 19A-19C Please provide an explanation.

[0223] Figures 19A-19C They represent respectively with Figures 17A-17C Cross-sectional views of the through regions 222, 224, and 226 of the through holes 81J, 82J, and 83J in the same cross section.

[0224] like Figure 19AAs shown, each spray hole 81J has a first through region 222 that extends linearly along the thickness direction T of the spray plate 84. Similarly, as Figure 19B As shown, each water spray hole 82J has a second through region 224 that extends linearly along the thickness direction T of the water spray plate 84, such as... Figure 19C As shown, each water spray hole 83J has a third through region 226 that extends in a straight line along the thickness direction T of the water spray plate 84.

[0225] like Figures 14-16 As shown, when viewed in plan view of the back surface 220 of the spray plate 84, the entire downstream opening, which is circular in shape, is contained within the upstream opening, which is elongated in shape, in each through hole constituting the spray hole groups 81, 82, and 83. Therefore, as Figures 19A-19C As shown, the first through region 222 includes the entire downstream opening 86A, the second through region 224 includes the entire downstream opening 88A, and the third through region 226 includes the entire downstream opening 90A.

[0226] exist Figures 19A-19C In each cross-section, the through regions 222, 224, and 226 have lateral dimensions X1, X2, and X3, respectively. In Embodiment 3, the diameters of the downstream openings 86A, 88A, and 90A are set to be approximately the same length. Therefore, the dimensions X1, X2, and X3 of the through regions 222, 224, and 226 are approximately the same length.

[0227] In Embodiment 3, the through holes 81J, 82J, and 83J are configured such that the dimensions X1, X2, and X3 are all set between the same lower limit value (e.g., 0.1 mm) and the same upper limit value (e.g., 0.4 mm) as in Embodiments 1 and 2 (e.g., 0.3 mm). With this design, similar to Embodiments 1 and 2, the flow rate of water flowing along the thickness direction T in each of the spray holes 81J, 82J, and 83J can be limited, and the deflection angle of the water outlet can be ensured while suppressing the clogging of water in the spray holes 81J, 82J, and 83J.

[0228] As described above, in the spray device 80 of embodiment 3, regarding the dimensions of the through regions 222, 224, and 226 of the plurality of spray holes 81J, 82J, and 83J, the lateral dimensions X1, X2, and X3 in the cross sections including the spraying directions (center lines) 87, 89, and 91 are set to a predetermined lower limit value and a predetermined upper limit value.

[0229] Based on this structure, by setting the lower and upper limits of the lateral dimensions X1, X2, and X3 of the through regions 222, 224, and 226, water can be easily sprayed out at an angle while suppressing blockage of the water passing through the respective spray holes 81J, 82J, and 83J. Thus, the desired water outlet pattern can be achieved.

[0230] Furthermore, in the spray device 80 of Embodiment 3, the lower limit of dimensions X1, X2, and X3 is 0.1 mm, and the upper limit is 0.4 mm. With this structure, it is possible to effectively suppress water blockage in the spray holes 81J, 82J, and 83J while ensuring a deflected water outlet angle.

[0231] Furthermore, in the spray device 80 of Embodiment 3, the through regions 222, 224, and 226 of each of the plurality of spray holes 81J, 82J, and 83J include the entirety of the downstream openings 86A, 88A, and 90A. According to this structure, since the lateral dimensions of the downstream openings 86A, 88A, and 90A are identical to the lateral dimensions X1, X2, and X3 of the through regions 222, 224, and 226, respectively, the lateral dimensions X1, X2, and X3 of the through regions 222, 224, and 226 can be adjusted by adjusting the dimensions of the downstream openings 86A, 88A, and 90A. Therefore, the lateral dimensions X1, X2, and X3 of the through regions 222, 224, and 226 can be controlled with high precision, making it easy to achieve the desired water outlet pattern.

[0232] Furthermore, in the spray device 80 of Embodiment 3, the downstream openings 86A, 88A, and 90A of each of the plurality of spray holes 81J, 82J, and 83J are circular. According to this structure, by unifying the downstream openings 86A, 88A, and 90A into a circular shape, deviations in the water outlet direction and flow rate of the spray holes 81J, 82J, and 83J can be suppressed.

[0233] Furthermore, in the spray device 80 of Embodiment 3, the upstream openings 86B, 88B, and 90B of each of the plurality of spray holes 81J, 82J, and 83J have an elongated orifice shape. Based on this structure, if... Figure 16 As shown, by changing the length of the upstream openings 86B, 88B, and 90B in the length direction, it is possible to achieve the following: Figures 17A-17C The water outlet direction of the spray holes 81J, 82J, and 83J can be easily adjusted as shown.

[0234] Furthermore, in the spray device 80 of Embodiment 3, a plurality of first spray holes 81J arranged at intervals on a circumference 92 and a plurality of second spray holes 82J arranged concentrically with the first spray holes 81J and at intervals on a circumference 93 are provided on the spray plate 84. The first spray holes 81J have a first through region 222, and the second spray holes 82J have a second through region 224. Regarding the size of the first through region 222 through which the upstream opening 86B to the downstream opening 86A of each of the first spray holes 81J passes through in a straight line along the thickness direction T, the lateral dimension X1 in the cross section including the spray direction 87 is set to a predetermined lower limit value and a predetermined upper limit value. Similar to the first water jet hole 81J, regarding the size of the second through region 224 through which the upstream end opening 88B to the downstream opening 88A of each of the second water jet holes 82J are straight through in the thickness direction T, the lateral dimension X2 in the cross section including the ejection direction 89 is set to be above the lower limit and below the upper limit of the same value as the first through region 222.

[0235] Based on this structure, by providing a second spray hole 82J in addition to the first spray hole 81J, a double spray film can be sprayed. Furthermore, regarding the lateral dimension X2 of the second through-region 224 of the second spray hole 82J, by applying the lower and upper limits of the lateral dimension X1 of the first through-region 222, water blockage can be suppressed not only in the first spray hole 81J but also in the second spray hole 82J, while water can be easily sprayed at an angle, achieving the desired water outlet pattern. In addition, by applying the same lower and upper limits to the lateral dimensions of both the first through-region 222 and the second through-region 224, the design becomes easier.

[0236] Furthermore, in the spray device 80 of Embodiment 3, the angle β1 formed by the spray direction 87 of the first spray hole 81J and the thickness direction T of the spray plate 84 is different from the angle β2 formed by the spray direction 89 of the second spray hole 82J and the thickness direction T of the spray plate 84. With this structure, even when the water outlet angles of the first spray hole 81J and the second spray hole 82J are different, the same lower limit value and the same upper limit value are applied to the lateral dimensions X1 and X2 of the through regions 222 and 224. This effectively suppresses water blockage in both spray holes 81J and 82J, while also allowing for easy, oblique water spraying, simplifying the design.

[0237] In addition, in Embodiment 3, the case of three groups of through holes 81, 82, and 83 is described, but it is not limited to this case. The number of groups of through holes can also be two or four or more.

[0238] Furthermore, by appropriately combining the various forms mentioned above, each can achieve its own specific effect.

[0239] The present invention has been fully described with reference to the accompanying drawings and in connection with preferred embodiments; however, various modifications and alterations will be apparent to those skilled in the art. Such modifications and alterations are to be understood as included therein, provided they do not depart from the scope of the invention as defined by the appended claims. Furthermore, variations in the combination and order of elements of the embodiments can be implemented without departing from the scope and spirit of the invention.

[0240] This invention is useful for overhead shower devices in bathrooms and shower devices used as faucets in kitchens or washrooms, as well as the spray plates they have.

Claims

1. A spraying device comprising a spray plate, characterized in that, On the spray surface of the aforementioned spray plate, a plurality of spray holes penetrating the aforementioned spray plate are spaced apart from each other in a circumferential arrangement. When the above-mentioned water spray surface is viewed in plan view, the direction of the center line connecting the center of the opening at the upstream end and the center of the opening at the downstream end of each of the above-mentioned multiple water spray holes includes the inclination component relative to the normal direction of the above-mentioned circumference in each water spray hole. Regarding the dimensions of the through area in which the openings at the upstream and downstream ends of each of the plurality of water spray holes are connected in a straight line along the thickness direction of the water spray plate, the lateral dimension in the cross section including the center line is set to be above a predetermined lower limit and below a predetermined upper limit. The opening at the upstream end of each of the aforementioned plurality of water jets has an elongated orifice shape that is a combination of two arcuate shapes and two straight shapes, the two straight shapes being parallel to each other.

2. The spraying device as described in claim 1, characterized in that, The upper limit mentioned above is 0.4 mm.

3. The spraying device as described in claim 1 or 2, characterized in that, The lower limit mentioned above is 0.1 mm.

4. The spraying device as described in claim 1 or 2, characterized in that, The through area of ​​each of the aforementioned plurality of water jets includes the entirety of the aforementioned opening at the downstream end.

5. The spraying device as described in claim 1 or 2, characterized in that, The opening at the downstream end of each of the aforementioned plurality of water spray holes has a circular shape.

6. The spraying device as described in claim 1 or 2, characterized in that, The aforementioned multiple water spray holes are multiple first water spray holes, and the aforementioned through area is the first through area; The aforementioned spray plate is also provided with a plurality of second spray holes. When the aforementioned spray surface is viewed in plan view, the plurality of second spray holes and the aforementioned first spray hole are concentric and are arranged in a circumferentially spaced apart. When the above-mentioned water spray surface is viewed in plan view, the direction of the center line connecting the opening center of the upstream end and the opening center of the downstream end of each of the above-mentioned second water spray holes includes the inclination component relative to the normal direction of the above-mentioned circumference in each water spray hole. Regarding the dimensions of the second through region, in which the opening at the upstream end of each of the second water spray holes extends in a straight line along the thickness direction of the water spray plate to the opening at the downstream end, the lateral dimension in the cross section including the center line is set to be above the lower limit and below the upper limit, which is the same as that of the first through region.

7. The spraying device as described in claim 6, characterized in that, The angle between the centerline of the first water spray hole and the thickness direction of the water spray plate is different from the angle between the centerline of the second water spray hole and the thickness direction of the water spray plate.

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