Diaphragm valve

Abstract

A diaphragm valve allows a diaphragm to move along a chamber to block a passage. The channel is composed of four sections. The second section is curved from the first section to the chamber. The third section is curved from the chamber to the fourth section. One end of the second section has a shape conforming to the contours of the septum to be blocked by the septum when contacted by the septum, and the septum has a conical protrusion to direct flow in the chamber when moved away.

Description

Technical Field

[0001] The present invention relates to a valve, and more particularly to a diaphragm valve for controlling fluids such as chemical solutions and water. Background Art

[0002] In many manufacturing processes, such as when a pharmaceutical factory produces drugs or when a semiconductor factory coats the surface of a wafer to form a thin film with a uniform thickness, it is necessary to control the amount of chemical solution or water. Therefore, precise valves are required in many industries. However, the valve installed in the flow path will affect the fluid, resulting in pressure loss. At the same time, the valve needs to be able to block the fluid smoothly and completely to achieve precise control. Therefore, a valve that can both reduce the pressure loss of the liquid flowing through the valve and smoothly and completely cut off the fluid is needed to achieve precise control. Summary of the Invention

[0003] The present invention discloses a diaphragm valve with optimized flow streamline and better blocking effect.

[0004] One aspect of the present invention provides a diaphragm valve comprising a controller and a body. The controller includes a knob and a diaphragm, the diaphragm being connected to the knob and driven by the knob. The body includes an opening, a chamber, and a channel. The opening is covered by the controller. The chamber contains the diaphragm and allows the diaphragm to move along the center line of the chamber. The channel includes a first section, a second section, a third section, and a fourth section. One end of the second section is connected to the inlet of the chamber. The outlet of the chamber is connected to one end of the third section. The second section bends from the first section to the chamber, and the third section bends from the chamber to the fourth section. An annular protrusion projects from the inner wall of one end of the second section, wherein the shape of the annular protrusion conforms to the profile of the adjacent diaphragm to be blocked by the diaphragm when they contact.

[0005] Another aspect of the present invention provides a diaphragm valve comprising a controller and a body. The controller includes a knob and a diaphragm, the diaphragm being connected to the knob and driven by the knob. The body includes an opening, a chamber, and a channel. The opening is covered by the controller. The chamber contains the diaphragm and allows the diaphragm to move along the center line of the chamber. The channel includes a first section, a second section, a third section, and a fourth section. One end of the second section is connected to the inlet of the chamber. The outlet of the chamber is connected to one end of the third section. The second section bends from the first section to the chamber, and the third section bends from the chamber to the fourth section. The diaphragm has a conical protrusion to guide the flow.

[0006] Another aspect of the present invention provides a diaphragm valve including a controller and a body. The controller includes a knob and a diaphragm, and the diaphragm is connected to the knob and driven by the knob. The body includes an opening, a chamber, and a passage. The opening is covered by the controller. The chamber contains the diaphragm and allows the diaphragm to move along the center line of the chamber. The passage includes a first section, a second section, a third section, and a fourth section. One end of the second section is connected to the inlet of the chamber. The outlet of the chamber is connected to one end of the third section. The second section bends from the first section to the chamber, and the third section bends from the chamber to the fourth section. One end of the second section has a shape that conforms to the contour of the diaphragm and is blocked by the diaphragm when contacted by the diaphragm. The angle between the center line of the chamber and the vertical line of the first section of the passage is in the range of 20 to 60 degrees.

[0007] The features and technical advantages of the present invention are broadly outlined above to better understand the embodiments of the present invention. The features and advantages of the present invention will be described below and form the subject matter of the claims of the present invention. Those skilled in the art should understand that the concepts and specific embodiments of the present invention may be modified or designed into other structures or methods for achieving the same purpose as the content of the present invention, and such equivalent structures do not depart from the spirit and scope of the present invention set forth in the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] A more complete understanding of the present invention can be obtained from the embodiments and the claims in conjunction with the drawings, in which:

[0009] Figure 1 is a perspective view of a diaphragm valve according to an embodiment of the present invention;

[0010] Figure 2 is Figure 1 a perspective view of the controller of the diaphragm valve of

[0011] Figure 3 is Figure 1 a perspective view of the body of the diaphragm valve of

[0012] Figure 4 is a sectional view of the body with a diaphragm according to an embodiment of the present invention;

[0013] Figure 5 is a sectional view of the body with a diaphragm according to another embodiment of the present invention;

[0014] Figure 6 is Figure 5 an enlarged view of the structure of area A of the sectional view of the body of

[0015] Figure 7 is Figure 5 an enlarged view of the structure of area B of the sectional view of the body of

[0016] Figure 8 is according toFigure 5 Side view of the diaphragm according to an embodiment;

[0017] Figure 9 is according to Figure 5 Stereogram of the diaphragm according to an embodiment;

[0018] Figure 10 is according to Figure 8 and Figure 9 Cross-sectional view of the diaphragm according to an embodiment;

[0019] Figure 11 Stereogram of the diaphragm valve according to another embodiment of the present invention; and

[0020] Figure 12 is Figure 11 Stereogram of the controller of the diaphragm valve.

[0021] Symbol description:

[0022] 10: Diaphragm valve

[0023] 10a: Diaphragm valve

[0024] 100: Controller

[0025] 100a: Controller

[0026] 120: Knob

[0027] 120a: Cylinder

[0028] 126: Threaded sleeve

[0029] 136: Flange

[0030] 136a: Flange

[0031] 138: Washer

[0032] 140: Diaphragm

[0033] 141: Notch

[0034] 142: Conical protrusion

[0035] 144: Annular groove

[0036] 145: Flat area

[0037] 146: Flexible ring

[0038] 148: Grooved ring

[0039] 152: Transparent cover

[0040] 154: Pneumatic outlet

[0041] 156: Pneumatic inlet

[0042] 200: Main body

[0043] 210: Opening

[0044] 220: Reinforcing rib

[0045] 222: Annular protrusion

[0046] 224: Diaphragm mounting seat

[0047] 226: Screw tube

[0048] 240a: Screw tube

[0049] 240b: Screw tube

[0050] 260a: Inlet

[0051] 260b: Outlet

[0052] 280: Channel

[0053] 281: First section

[0054] 282: Second section

[0055] 283: Third section

[0056] 284: Fourth section

[0057] 285: Chamber

[0058] 286: One end of the second section

[0059] 287: One end of the third section

[0060] 290: Arrow

[0061] 340a: Pipeline connector

[0062] 340b: Pipeline connector

[0063] 360a: Pipeline

[0064] 360b: Pipeline

[0065] A: Area

[0066] B: Area

[0067] C1: Center line

[0068] C2: Center line

[0069] C3: Center line

[0070] V: Vortex

[0071] S: Liquid flow

[0072] θ: Included angle Detailed Implementation Modes

[0073] The following provides many different embodiments for implementing the different features of the present invention. The schematic reference numerals may be repeated throughout the embodiments, but it does not necessarily mean that the features of one embodiment apply to another embodiment, even if they have the same reference numerals. It should be understood that although terms such as first, second, third, etc. may be used to describe various elements, components, regions, layers or segments, these elements, components, regions, layers or segments are not limited to these terms. On the contrary, these terms are only used to distinguish one element, component, region, layer or segment from another region, layer or segment. The terms used herein are only for describing specific embodiments and are not intended to limit the present invention. As used herein, the singular forms "a", "an" and "the" also mean including the plural forms unless the context clearly dictates otherwise. It should also be understood that the terms "comprising" and "including" in this specification mean the stated features, wholes, steps, operations, elements or components, and also mean additional other features, wholes, steps, operations, elements, components or their groups.

[0074] The valve of the embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0075] Figure 1 is a perspective view of the diaphragm valve 10 according to an embodiment of the present invention. Figure 2 is Figure 1 a perspective view of the controller 100 of the diaphragm valve 10 in Figure 3 is Figure 1 a perspective view of the body 200 of the diaphragm valve 10 in Figure 1 As shown in Figure 2 shown, the diaphragm valve 10 of the present invention includes a controller 100 and a body 200. As Figure 3 shown, the controller 100 includes a knob 120 and a diaphragm 140. The diaphragm 140 is connected to the knob 120 and driven by the knob 120. As Figure 1 shown, the body 200 includes an opening 210, a chamber 285 and a channel 280. The opening 210 is covered and sealed by a threaded sleeve 126 of the controller 100 as

[0076] As Figure 1 and Figure 3 shown, the diaphragm valve 10 is installed between pipelines 360a and 360b. The pipelines 360a and 360b are respectively connected to the inlet 260a and the outlet 260b of the diaphragm valve 10, while the pipeline connectors 340a and 340b are respectively installed on the solenoids 240a and 240b. In addition, the reinforcing rib 220 strengthens the structure of the chamber 285, and the arrow 290 shown on the side indicates the direction of flow.

[0077] Figure 4and Figure 5 is a cross-sectional view of a body and a diaphragm according to an embodiment of the present invention. Chamber 285 houses diaphragm 140 and allows diaphragm 140 to move along the centerline C2 of chamber 285. Channel 280 includes a first section 281, a second section 282, a third section 283, and a fourth section 284. One end 286 of the second section 284 is connected to the inlet of chamber 285, and one end 286 of the second section 282 lies in a plane perpendicular to the centerline C2 of chamber 285. The outlet of chamber 285 is connected to one end 287 of the third section 283. The second section 282 bends from the first section 281 towards chamber 285, and the third section 283 bends from chamber 285 towards the fourth section 284. The direction of the liquid flow S in the second section 282 turns from along the centerline C1 of the first section 281 to the centerline C2 of chamber 285. In addition, the liquid flow S in the third section 283 turns from chamber 285 to become along the centerline C3 of the fourth section 284.

[0078] Reference Figure 4 and Figure 5 , the angle θ between the centerline C2 of chamber 285 and the perpendicular line of the first section 281 of channel 280 is in the range of approximately 20 to 60 degrees. In a preferred embodiment of the present invention, when the angle θ between the centerline C2 of chamber 285 and the perpendicular line of the first section 281 of the channel is 34 to 36 degrees, the pressure loss of the liquid flowing through the diaphragm valve 10 is minimized. In addition, diaphragm 140 has a flexible ring 146 and a grooved ring 148. The flexible ring 146 is used to adaptively separate the fluid in chamber 285 from air, and the grooved ring 148 is used to engage the diaphragm mount 224.

[0079] Figure 4 The illustrated embodiment has a flat surface at the bottom of diaphragm 140, and the space between diaphragm 140 and the flow path allows the generation of a vortex V. However, the vortex V affects the flow. Therefore, Figure 5 Another illustrated embodiment has a conical protrusion 142 at the bottom of diaphragm 140 to eliminate the space for generating the vortex V. That is, diaphragm 140 has a conical protrusion 142 to guide the flow to eliminate the vortex V.

[0080] Figure 6 is Figure 5 an enlarged view of the detailed structure in region A of the cross-sectional view of the body, Figure 7 is Figure 5 an enlarged view of the detailed structure in region B of the cross-sectional view of the body. As Figure 6 and Figure 7As shown, the annular protrusion 222 protrudes from the inner wall of one end of the second section 282, and the annular protrusion 222 has a shape that conforms to the contour of the diaphragm 140 and can be blocked by the diaphragm 140 when the diaphragm 140 moves to contact one end 286 of the second section 282. In a preferred embodiment of the present invention, when the diaphragm 140 moves to contact one end 286 of the second section 282, the annular groove 144 on the diaphragm 140 can engage the annular protrusion 222.

[0081] Figure 8 is a side view of the diaphragm 140 according to an embodiment of Figure 5 and a perspective view of the diaphragm 140 according to an embodiment of Figure 9 is a perspective view of the diaphragm 140 according to an embodiment of Figure 5 and a sectional view of the diaphragm 140 according to an embodiment of Figure 10 and Figure 8 and Figure 9 In a preferred embodiment of Figure 8 - 10 , a flat area 145 surrounds the conical protrusion 142. In a preferred embodiment of Figure 10 , the annular groove 144 is located on the flat area 145, where the annular groove 144 conforms to the annular protrusion 222. In addition, the diaphragm 140 has a notch 141 for accommodating a device connected to the knob 120, as Figure 2 shown.

[0082] Figure 11 is a perspective view of a diaphragm valve 10a according to another embodiment of the present invention. Figure 12 is Figure 11 a perspective view of the controller 100a of the diaphragm valve 10a in Figure 2 . As an alternative embodiment, Figure 12 the controller 100 can be replaced by the pneumatic controller 100a shown in Figure 11 . As shown in Figure 12 , the diaphragm valve 10a includes a controller 100a and a body 200. As shown in

[0083] , the controller 100a includes a cylinder 120a and a diaphragm 140. Air is pumped and discharged through the pneumatic outlet 154 and the pneumatic inlet 156 to drive the diaphragm 140.

[0083] In summary, the diaphragm valve described in the embodiments of the present invention can perform precise and accurate fluid control and is beneficial for use in, for example, semiconductor production lines or various chemical production lines.

[0084] Although the present invention has been described in detail with its advantages, it should be understood that various changes, substitutions, and alterations can be made without departing from the spirit and scope of the invention as set forth in the claims. For example, many of the processes discussed above can be implemented in different ways and replaced by other processes or combinations thereof. In addition, the scope of the present invention is not limited to the specific embodiments of the apparatus, process, composition, means, method, or steps described in the specification. Therefore, the appended claims are intended to embrace such apparatus, process, composition, means, method, or steps within their scope.

Claims

1. A diaphragm valve, characterized in that: include: a controller including a diaphragm; and A subject, including: an opening covered by the controller; a chamber that accommodates the diaphragm for movement therein; a channel, comprising: a first section, a second section, a third section and a fourth section, wherein one end of the second section is connected to an inlet of the chamber, an outlet of the chamber is connected to one end of the third section, the second section is bent from the first section to the chamber, and the third section is bent from the chamber to the fourth section; and An annular protrusion protrudes from an inner wall of the end of the second section, wherein the annular protrusion has a shape that matches a contour of the diaphragm so as to be blocked by the diaphragm when the diaphragm contacts the end of the second section.

2. The diaphragm valve according to claim 1, characterized in that: Also included is a conical protrusion on the diaphragm to direct flow.

3. The diaphragm valve according to claim 1, characterized in that: Also included is an annular groove on the diaphragm to engage the annular protrusion.

4. The diaphragm valve according to claim 1, characterized in that: Also includes: a conical protrusion located on the diaphragm; a flat area surrounding the conical protrusion; as well as An annular groove is located on the flat area, wherein the annular groove matches the annular protrusion.

5. A diaphragm valve, characterized in that: include: a controller including a diaphragm; and A subject, including: an opening covered by the controller; a chamber that accommodates the diaphragm for movement therein; a channel, comprising: a first section, a second section, a third section and a fourth section, wherein one end of the second section is connected to an inlet of the chamber, an outlet of the chamber is connected to one end of the third section, the second section is bent from the first section to the chamber, and the third section is bent from the chamber to the fourth section; and A conical protrusion is located on the diaphragm to direct the flow.

6. The diaphragm valve according to claim 5, characterized in that It also includes an annular protrusion protruding from an inner wall of the end of the second section, wherein the annular protrusion has a shape that matches a contour of the diaphragm so as to be blocked by the diaphragm when the diaphragm contacts the end of the second section.

7. The diaphragm valve according to claim 6, characterized in that Also included is an annular groove on the diaphragm to engage the annular protrusion.

8. The diaphragm valve according to claim 6, characterized in that The invention also comprises a flat area surrounding the conical protrusion, and an annular groove located on the flat area, wherein the annular groove matches the annular protrusion.

9. A diaphragm valve, characterized in that: include: a controller including a diaphragm; and A subject, including: an opening, which is covered by the controller; a chamber that accommodates the diaphragm for movement therein; A channel comprises: a first section, a second section, a third section and a fourth section, wherein one end of the second section is connected to an inlet of the chamber, an outlet of the chamber is connected to one end of the third section, the second section bends from the first section to the chamber, and the third section bends from the chamber to the fourth section. wherein the end of the second section has a shape that matches a contour of the diaphragm so as to be blocked by the diaphragm when the diaphragm contacts the end of the second section, and Wherein, an angle between a center line of the chamber and a vertical line of the first section of the channel is in the range of 20 to 60 degrees.

10. The diaphragm valve according to claim 9, characterized in that The angle between the center line of the chamber and the vertical line of the first section of the channel is 34 to 36 degrees.

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