JP2021110460A - Flow control valve - Google Patents

Abstract

To provide a valve easy in assembly and disassembly.SOLUTION: A valve includes: an actuation assembly 10 including a drive portion generating driving force, a needle shaft connected to the drive portion at one end to receive the driving force from the drive portion and to perform linear motion, a needle nut coupled to the drive portion and having a middle hole through which the needle shaft passes, so as to guide the linear motion of the needle shaft, and a valve disc coupled to the other end of the needle shaft; a body 20 coupled to the actuation assembly 10 and having a valve opening selectively opened and closed by linear motion of the valve disc inserted into the inside in which water flows; and a clip 30 for fixing the body 20 and the actuation assembly 10 so that the body 20 and the actuation assembly 10 are not separated from each other.SELECTED DRAWING: Figure 3

Description

The present invention relates to a flow rate adjusting valve.

The flow rate control valve is a component arranged to control the flow rate flowing in a water heater such as a boiler, and a physical change occurs by being controlled by receiving an electric signal, and the inside thereof. The flow rate of water flowing through can be adjusted.

The valve can be formed by combining various components rather than being formed integrally. As water flows through the inside of the valve, each component must be tightly coupled to maintain the valve's watertightness.

However, since the counterpart is connected to the valve at a right angle or the valve and counterpart are densely arranged in a narrow water heater, the inside of the valve must be checked for inspection and management of the valve. If not, there is a problem that the valve is not easy to assemble and separate due to lack of space inside the water heater and interference by other fixed components.

On the other hand, such a flow rate adjusting valve adjusts the flow rate of water in order to match the hot water temperature set by the water heater, but is generally linear for predictable control. Flow rate control must be done. When the flow rate change is non-linear, there is a problem that it must be reflected in the control logic after measuring the flow rate for changes in many conditions such as differential pressure change and valve angle change, but when the flow rate change is linear. , The conditions required for the design of the control log and the number of flow data can be significantly reduced.

The present invention has been devised to solve such a problem, and provides a flow rate adjusting valve configured to be easily controlled. The present invention also provides a valve in which the flow rate changes linearly.

The flow control valve according to the embodiment of the present invention includes a drive unit that generates a driving force, a needle shaft whose one end is connected to the drive unit so as to linearly move by receiving the transmission of the drive force from the drive unit, and the above. An operating assembly that includes a needle nut that is coupled to a drive unit and has a hole through which the needle shaft penetrates to guide the linear motion of the needle shaft, and a valve disc that is coupled to the other end of the needle shaft. A body that is coupled to the working assembly and is inserted inside so that water can flow, and a valve port that is selectively opened and closed by linear motion of the valve disc, and the body and the working Includes the body and a clip that secures the working assembly so that the assemblies do not separate from each other.

The valve according to the embodiment of the present invention has a drive unit that generates a driving force, a needle shaft whose one end is connected to the drive unit so as to linearly move by receiving the transmission of the drive force from the drive unit, and the drive unit. An actuating assembly comprising a needle nut coupled and having an inner hole through which the needle shaft penetrates to guide linear motion of the needle shaft, and a valve disc coupled to the other end of the needle shaft, and the actuating assembly. The valve disc includes a body having a valve port inside which is connected to the solid and is inserted inside so that water can flow and is selectively opened and closed by linear motion of the valve disc. When the valve disc is connected to the reference direction end of the needle shaft that further protrudes from the needle nut along the reference direction, has a convex shape along the reference direction, and the valve disk moves linearly along the reference direction, the said The effective region of the flow path formed between the circumference of the valve opening and the outer surface of the valve disk closest to the valve opening is formed so as to be formed like a side surface of a conical stand.

This allows the components of the valve to be separated or assembled and the valve to be easily managed. The flow rate can be adjusted linearly as a whole.

FIG. 3 is a vertical cross-sectional view of an exemplary valve. It is a perspective view of the valve by one Embodiment of this invention. It is a figure which showed the situation which assembles the valve by one Embodiment of this invention. It is a vertical sectional view of the valve by one Embodiment of this invention. It is an exploded perspective view of the valve by one Embodiment of this invention. It is a side view of the valve by one Embodiment of this invention. It is a detailed view which showed the region adjacent to the valve disk by one Embodiment of this invention. It is a vertical sectional view of the valve by another embodiment of this invention. It is a perspective view of the valve disk by another embodiment of this invention. It is a front view of the valve disk by another embodiment of this invention. It is a detailed view which showed the situation which the valve disk by one Embodiment of this invention is inserted into a valve opening.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary diagrams. It should be noted that by assigning reference codes to the components of each figure, the same components are given the same code as much as possible even if they are displayed on other figures. .. Further, in explaining the embodiment of the present invention, if it is determined that a specific description of the related known configuration or function hinders the understanding of the embodiment of the present invention, the detailed description thereof will be omitted. do.

In describing the components of the embodiments of the present invention, terms such as first, second, A, B, (a), and (b) may be used. Such a term is only for distinguishing the component from other components, and the term does not limit the essence, order, order, etc. of the component. When a component is described as being "connected," "joined," or "connected" to a different component, that component may be directly connected or connected to the other component, but each component. It must also be understood that other components can be "connected", "joined" or "connected" between elements.

FIG. 1 is a vertical cross-sectional view of an exemplary valve 100.

With reference to the figure, the exemplary valve 100 can be considered to include a body 101, a valve disc 102, a drive unit 104, and a connecting member 103. The valve disc 102 moves up and down inside the body 101 so that the outer portion thereof is rested on the valve seat 1011 formed around the valve opening 1012, and the inner portion is inserted into the valve opening 1012 to open and close the valve 100. Can be adjusted.

The body 101 and the drive unit 104 that raises and lowers the valve disc 102 may be connected to each other by using a connecting member 103. After the connecting member 103 finds a fixed position on the body 101 and settles on the connecting member 103, they are fastened to each other via the fastener 105. The coupling may be carried out in such a way that they are fastened to each other. Therefore, the body 101 and the drive unit 104 are not connected at one time, but the body 101 and the drive unit 104 are connected through a plurality of steps and are connected to the drive unit 104 for raising and lowering the valve disk 102. The steps required for assembly can be further increased by including the process of connecting the components to the drive unit 104.

FIG. 2 is a perspective view of the valve 1 according to the embodiment of the present invention. FIG. 3 is a diagram showing a situation in which the valve 1 according to the embodiment of the present invention is assembled.

Referring to the figure, the valve 1 according to one embodiment of the present invention may include a working assembly 10 and a body 20 and may include a clip 30.

After the working assembly 10 is inserted into the body 20, the coupling may be performed by inserting the clip 30. As shown, the working assembly 10 can be inserted into the body 20 along the reference direction D from the opposite side of the reference direction D of the body 20, and the clip 30 is inserted in a direction across the reference direction D with the body 20. The relative positions of the working assemblies 10 may be fixed relative to each other.

The reference direction D in one embodiment of the present invention may be vertically downward, and the direction in which the clip 30 is inserted may be the horizontal direction, but the direction is not limited thereto.

The valve 1 according to one embodiment of the present invention is divided into a large portion of the body 20, the working assembly 10 and the clip 30, and a large number of fasteners (16 in FIG. 5) that must be fastened and separated using tools. ) Can be easily combined and separated by using the clip 30, and maintenance and repair work can be facilitated. The bonding structure between the clip 30 and the body 20 will be described in detail later in the description of the clip 30.

Body 20
FIG. 4 is a vertical cross-sectional view of the valve 1 according to the embodiment of the present invention. FIG. 5 is an exploded perspective view of the valve 1 according to the embodiment of the present invention.

Each component of valve 1 will be described with reference to FIGS. 4 and 5. The body 20 is a portion that provides a space through which water flows. Therefore, the body 20 is formed in the shape of an empty pipe inside so that water can flow through the inside, and one end can be connected to a portion that provides water to the valve 1.

The body 20 can be selectively opened and closed by the working assembly 10 because the valve 1 is essentially responsible for draining or preventing the drainage of water flowing in the internal space 210 formed inside the body 20. The valve port 211 may be provided inside. Such working assemblies 10 and bodies 20 can be coupled and their relative positions relative to each other fixed.

The working assembly 10 may be inserted into the body 20 provided to allow water to flow. A portion of the working assembly 10 inserted inside the body 20 may include a valve disc 14. The valve port 211 can be selectively opened and closed by the valve disk 14 moving linearly by the operation of the operating assembly 10.

The body 20 has a main body 21 into which the working assembly 10 is inserted and a valve port 211 is arranged inside, and a branch 22 which is connected to a device for transmitting water to the inside of the body 20 to transmit water to the main body 21. May include. The main body 21 has a shape extended along the reference direction D, and may have a pipe shape with both ends open with respect to the reference direction D. The working assembly 10 may be inserted through the open end of the main body 21 and water may be drained through the other end. The valve port 211 may be located below a portion of the main body 21 to which the branch 22 is connected. This is because the water transmitted to the main body 21 needs to be discharged through the valve port 211.

The branch 22 may penetrate the side surface of the main body 21 and extend outward from the main body 21 along a direction across the main body 21, and may have a pipe shape with the extended outer side open. A device for supplying water to the valve 1 may be coupled to the outer end of the branch 22, and the water may flow through the branch 22 and be transmitted to the main body 21. The branch 22 and the main body 21 may form a "T" shaped body 20 as illustrated.

Since the working assembly 10 is inserted into the main body 21, there may be a part of the main body 21 surrounding the needle nut 13 of the working assembly 10, as will be described later. Such a part can be penetrated to form the clip insertion opening 213. The clip insertion slot 213 may have a shape that extends along a portion around the main body 21. The insertion portion 31 of the clip 30 may be inserted or penetrated from the inside to the outside through such a clip insertion opening 213.

A central hole 212 may be formed on the reference direction D side of the valve port 211. The central hole 212 is a hole formed along the reference direction D so that the small diameter portion 125 can be inserted, and is defined by the inner surface of the body 20 so that the small diameter portion 125 is inserted to guide the linear motion. It may have a diameter larger than or the same as the outer diameter of the small diameter portion 125. With the valve disc 14 not inserted into the valve port 211, the water flowing into the valve port 211 goes to the outside of the body 20 along the reference direction D through another hole (not shown) around the central hole 212. It may be discharged.

Clip 30
FIG. 6 is a side view of the valve 1 according to the embodiment of the present invention.

The clip 30 serves to fix the body 20 and the working assembly 10 so that the body 20 and the working assembly 10 do not separate from each other. The clip 30 can penetrate the clip insertion port 213 formed in the body 20 and at the same time is inserted into the clip insertion groove 133 formed in the needle nut 13 described later to fix the body 20 and the operating assembly 10.

The clip 30 may include an insertion portion 31 and a handle portion 32. The insertion portion 31 may be inserted into the clip insertion groove 133 and the clip insertion opening 213. The insertion portion 31 may be divided into two parts, each surrounding the needle nut 13 from opposite directions and penetrating the clip insertion port 213. The handle portion 32 may be extended along the direction in which the clip insertion groove 133 is recessed or the clip insertion port 213 is open.

The handle portion 32 is a portion arranged on the outside of the body 20 when the insertion portion 31 fixes the body 20 and the needle nut 13. The handle portion 32 has a shape that is bent and extended from the insertion portion 31 so that the user can easily grasp and connect or separate the handle portion 32. In the figure, the insertion portion 31 is extended along one of the horizontal directions perpendicular to the reference direction D, and the handle portion 32 has a form in which the handle portion 32 is bent downward from the extension and is extended. The direction and the direction of turning are not limited to this.

When the insertion portion 31 is inserted into the clip insertion groove 133 and the clip insertion opening 213, the inner part of the insertion portion 31 divided into two is inserted into the clip insertion groove 133, and is inserted into the end of the insertion portion 31 and the handle portion 32. The other part of the adjacent insertion portion 31 penetrates the clip insertion opening 213. Therefore, since the insertion portion 31 is applied to the body 20 and the needle nut 13 at the same time, the clip 30 can prevent the body 20 and the needle nut 13 from relatively moving along the reference direction D or the opposite direction. In order to separate the body 20 and the working assembly 10 from each other, it is only necessary to remove the clip 30 in reverse, and the use of the clip 30 facilitates the assembly and separation of the body 20 and the working assembly 10.

Working assembly 10
The working assembly 10 is a component for allowing or blocking the flow of water in the body 20. Therefore, the operating assembly 10 may include a drive unit 11, a needle shaft 12, a needle nut 13, and a valve disc 14 so as to open and close the valve port 211 of the valve 1 by operating.

The drive unit 11 is a component that generates a driving force by receiving electric power, and a motor, an actuator, or the like may be used, and a stepping motor may be preferably used as the drive unit 11, but the type thereof is this. Not limited to. The driving unit 11 can generate a rotating rotational force as a driving force.

The needle shaft 12 is a component whose one end is connected to the connecting portion 111 of the driving portion 11 so as to receive a driving force from the driving portion 11 and move linearly. The connecting portion 111 of the driving unit 11 may have a gear value on the inner side surface so that the driving force transmitted by the driving unit 11 is transmitted to the needle shaft 12, and the connecting portion 111 also has a gear value on the outer surface of one end 121 of the needle shaft 12. A gear value that can be meshed with may be formed.

The needle shaft 12 may have a rod shape extending along the reference direction D. The end opposite to the reference direction D, which is one end 121 of the needle shaft 12, may be connected to the connecting portion 111 of the drive unit 11, and the valve disk 14 may be connected to the other end, which is the end on the reference direction D side.

The needle shaft 12 can move linearly by the driving force transmitted from the driving unit 11. Since the drive unit 11 can generate a rotational force, the needle shaft 12 can move linearly while rotating. A male thread 122 is formed on a part of the outer surface of the needle shaft 12 so as to allow such movement, and can be meshed with a female thread 134 formed on a part of the inner surface of the needle nut 13. That is, like the lead screw, the needle shaft 12 meshed with the inner surface of the needle nut 13 moves linearly along the inner surface of the needle nut 13 in the reference direction D or the opposite direction while being rotated by the drive unit 11. can.

The needle shaft 12 may have a shape in which two cylinders having different diameters are formed in a cylindrical shape and are joined side by side in the length direction. Of the two cylinders, the portion having a relatively large diameter is referred to as a large diameter portion 123, and the portion having a relatively small diameter is referred to as a small diameter portion 125. The male thread 122 may be formed on the large diameter portion 123, and the end opposite to the reference direction D of the needle shaft 12 coupled to the drive portion 11 may be a part of the large diameter portion 123. The linear motion of the large diameter portion 123 performed along the reference direction D may be guided by the needle nut 13.

A shaft groove 124 to which the shaft ring 152 is connected may be formed by being recessed inward on the outer surface of the large diameter portion 123. The shaft grooves 124 may be formed in a number corresponding to the number of shaft rings 152. In one embodiment of the present invention, two shaft rings 152 are arranged and the number of shaft grooves 124 is also shown to be two, but the number is not limited thereto.

The shaft ring 152 is a ring that serves to maintain watertightness between the needle shaft 12 and the needle nut 13, and may be made of an elastic material, or may be a ring formed in an annular shape. The shaft ring 152 contacts the outer surface of the needle shaft 12 and the inner surface of the needle nut 13 defining the inner hole 131, respectively, and maintains watertightness even when the needle shaft 12 has a relative movement with respect to the needle nut 13. Can be done.

The shaft ring 152 may be a quad ring having a cross-sectional shape having four protruding portions. By arranging the quad ring, one ring can have two contact points with respect to one contact surface, so that watertightness can be easily maintained and a twisting phenomenon can be prevented.

The small diameter portion 125 may be arranged in a form extended along the reference direction D from the reference direction D side end of the large diameter portion 123. The small diameter portion 125 may be inserted into the central hole 212 formed inside the body 20. Therefore, the central hole 212 may guide the linear motion of the small diameter portion 125 along the reference direction D.

A fixing groove 126 to which the fixing ring 155 is connected may be formed inwardly recessed on the outer surface of the small diameter portion 125. The fixing ring 155 is a ring for fixing the valve disc 14 so as to prevent the valve disc 14 from coming off from the needle shaft 12, and may be formed in a “C” shape. With the small diameter portion 125 inserted into the central hole 212 of the valve disc 14 and the valve disc 14 and the small diameter portion 125 coupled to each other, the fixing groove 126 is formed in a part of the small diameter portion 125 located on the reference direction D side of the valve disc 14. Is formed, and the fixing ring 155 is fitted into the fixing groove 126 to prevent the valve disc 14 from coming off along the reference direction D. The large diameter portion 123 can prevent the valve disc 14 from coming off in the direction opposite to the reference direction D.

The working assembly 10 may further include a buffer ring 153. The buffer ring 153 may be coupled to the small diameter portion 125 and disposed between the valve disc 14 and the large diameter portion 123. The buffer ring 153 is made of an elastic material, and when the valve disc 14 receives a force in the direction opposite to the reference direction D, it can exert an elastic force on the valve disc 14 to cause a buffering action. The buffer ring 153 is inserted to prevent possible leakage between the valve disc 14 and the needle shaft 12 when the flow path is completely closed.

The needle nut 13 has an inner hole 131 through which the needle shaft 12 penetrates so as to guide the linear motion of the needle shaft 12, and is coupled with the drive unit 11 and the body 20 to connect the components of the valve 1 as a whole. The clip 30 may be involved in the connection between the needle nut 13 and the body 20, and the fastener 16 may be used for the connection between the needle nut 13 and the drive unit 11.

After connecting the drive unit 11 and the needle shaft 12, the drive unit 11 is settled on the needle nut 13 while inserting the needle shaft 12 into the inner hole 131 of the needle nut 13, and then the drive unit 11 is connected using the fastener 16. May form the working assembly 10. A needle nut fastening hole 132 and a driving portion fastening hole 112 are formed in the needle nut 13 and the drive portion 11, respectively, and coupling may be performed via a fastener 16 that is fastened while penetrating the two fastening holes. However, the connecting member 103 is not required when the drive unit 11 and the needle nut 13 are connected.

Since the needle nut 13 has a portion where the cross-sectional area cut in a plane perpendicular to the reference direction D decreases and a portion where the cross-sectional area is maintained constant while going along the reference direction D, the needle nut 13 is tapered while going along the reference direction D as a whole. May have a shape.

The needle nut 13 may be inserted into the body 20 along the reference direction D and coupled to the body 20 by a clip 30. For this purpose, the needle nut 13 may have a clip insertion groove 133 recessed inward from a portion of the outer surface inserted inside the body 20.

A nut ring 151 may be arranged between the outer surface of the needle nut 13 and the inner surface of the body 20 that defines the internal space 210. The nut ring 151 is a ring that maintains watertightness between the needle nut 13 and the body 20, and may be made of an elastic material, or may be a ring formed in an annular shape.

The working assembly 10 includes a valve disc 14. The valve disc 14 is inserted into the valve opening 211 of the body 20 or slips through the valve opening 211 to selectively adjust the opening and closing of the valve opening 211.

FIG. 7 is a detailed view showing a region adjacent to the valve disc 14 according to the embodiment of the present invention.

The valve disc 14 may be coupled to a small diameter portion 125 located at the end on the reference direction D side of the needle shaft 12 that further protrudes from the needle nut 13 along the reference direction D, and may have a convex shape along the reference direction D. ..

When the valve disc 14 linearly moves along the reference direction D, the effective region of the flow path formed between a part of the outer surface of the valve disc 14 closest to the valve port 211 and around the valve port 211. It may be formed so that the shape of (A) is formed like the side surface of a truncated cone. Here, the effective region (A) means a portion having the narrowest width among the portions of the entire flow path and determining the total flow rate flowing along the flow path.

In order to form such an effective region (A), the valve disc 14 may have a tapered shape in which the cross-sectional area of the cross section cut in a plane perpendicular to the reference direction D decreases as the valve disc 14 goes along the reference direction D. Further, the width of the flow path formed in the side surface shape of such a truncated cone is changed so as to be linearly proportional to the displacement of the valve disc 14 moved in the reference direction D or the direction opposite to the reference direction D. The shape of the valve disc 14 may be formed.

Further, since the valve disc 14 according to the embodiment of the present invention does not have a portion protruding outward along the direction perpendicular to the reference direction D of the exemplary valve disc 14 of FIG. 1, the valve disc 14 is cheap. The valve sheet 1011 to be worn may not be formed on the inner surface of the body 20. With such a structure, it is possible to prevent a situation in which the effective region (A) formed like the shape of a truncated cone is suddenly deformed into another shape, and the change aspect of the flow rate is suddenly changed.

As a result, the valve 1 according to the embodiment of the present invention has a valve disc 14 having the above-mentioned shape and a valve port 211 into which such a valve disc 14 is inserted and opened and closed, and linearly adjusts the overall flow rate. Can be controlled.

The valve disc 14 may have a pillar portion 141 and a protruding portion 142. The pillar portion 141 is a portion formed in a columnar shape smaller than or the same as the diameter of the valve port 211, and the protruding portion 142 is formed to be convex along the reference direction D from the reference direction D side of the pillar portion 141. This is the part. The above-mentioned flow path may be formed between the boundary between the protrusion 142 and the valve port 211. The outer surface of the pillar portion 141 may be in close contact with the inner surface of the body 20 defining the valve opening 211 and may be involved in closing the valve opening 211.

The end surface 143 of the plane formed at the reference direction D side end of the valve disc 14 may be orthogonal to the reference direction D. That is, the end on the reference direction D side of the protrusion 142 may form the end surface 143 as if it were cut by a plane perpendicular to the reference direction D.

The disc groove 144 may be formed so as to be recessed inward from the outer surface of the valve disc 14. An annular disc ring 154 may be inserted into such a disc groove 144. That is, the valve disc 14 may be inserted into the disc ring 154, and the disc ring 154 may be caught in the disc groove 144.

Such a disc groove 144 may be formed so as to be recessed inward from the outer surface of the portion where the pillar portion 141 and the protruding portion 142 are in contact with each other. Therefore, a disc groove 144 is formed at the point where the protruding portion 142 ends, and the valve port 211 can be closed after the flow path is formed by the protruding portion 142.

The disc ring 154 is arranged between the valve disc 14 and the inner surface of the body 20 that defines the valve port 211 to maintain watertightness and ensure that the valve port 211 is closed by the valve disc 14. The disc ring 154 may be made of an elastic material so as to surround the valve disc 14 and make good contact with the inner surface of the body 20. The outer surface of the disc ring 154 is on the inner surface of the body 20 that defines the valve opening 211 so that when the valve disk 14 moves along the reference direction D and is inserted into the valve opening 211, the valve opening 211 is closed. You may contact. The disc ring 154 may be a quad ring having four protruding portions in cross-sectional shape.

Other Embodiment FIG. 8 is a vertical cross-sectional view of the valve 2 according to another embodiment of the present invention. FIG. 9 is a perspective view of the valve disc 44 according to another embodiment of the present invention. FIG. 10 is a front view of the valve disc 44 according to another embodiment of the present invention. FIG. 11 is a detailed view showing a situation in which the valve disc 44 according to the embodiment of the present invention is inserted into the valve opening 211.

The valve 2 according to another embodiment of the present invention differs from the one embodiment in the shape of the valve disc 44 and the presence or absence of the disc ring 154. Therefore, the contents described for the valve 1 according to one embodiment of the present invention may be applied to the valve 2 for other embodiments of the present invention.

The valve disc 44 may be made of a material containing Teflon®. Teflon (registered trademark) has low adhesiveness, good chemical resistance, abrasion resistance, heat resistance, and low friction, so it is in direct contact with the valve seat 214 to close the valve port 211 and maintain watertightness. It is suitable to do so.

The valve disc 44 may have a column portion 441 and a protruding portion 442. The pillar portion 441 is a portion formed in a columnar shape having a bottom surface having a diameter larger than the diameter of the valve opening 411. The protruding portion 442 is a portion formed by projecting from the reference direction D side of the pillar portion 441 along the reference direction D in a convex shape. The protrusion 442 may be formed so as to be inserted into the valve opening 211.

A step may be formed at a portion where the pillar portion 441 and the protruding portion 442 are in contact with each other. When a step is formed and the valve opening 211 is closed, the lower surface 4411 of the column portion 441 may come into contact with the valve seat 214 formed around the valve opening 211.

The protrusion 442 may have a cylindrically formed protruding base 4421 having a bottom surface smaller than or having the same diameter as the diameter of the valve opening 211 so that such a step can be formed. The protruding base portion 4421 may project from the pillar portion 441 in a columnar shape along the reference direction D. The diameter of the lower surface 4411 of the pillar portion 441 is larger than the diameter of the valve port 211, but the diameter of the bottom surface of the protruding base portion 4421 is smaller than or the same as the diameter of the valve opening 211, and the diameter of the bottom surface of the protruding base portion 4421 is the pillar portion. Since it is smaller than the diameter of the lower surface 4411 of the 441, a step can be formed at a position where the pillar portion 441 and the protruding portion 442 come into contact with each other.

The protruding base portion 4421 has the diameter described above and may be inserted and fitted into the valve opening 211 when the valve opening 211 is closed. The flow path may be formed between the boundary between the protrusion 442 and the valve port 211. The outer surface of the protruding base portion 4421 may be in close contact with the inner surface of the body 20 defining the valve opening 211 and may be involved in closing the valve opening 211. That is, even without the disc ring 154 of one embodiment, the outer surface of the protruding base portion 4421 and the lower surface 4411 of the pillar portion 441 are in contact with the inner surface of the body 20 and the valve seat 214, which define the valve opening 211, respectively. The valve port 211 can be closed to maintain watertightness.

The protruding portion 442 has a shape that protrudes from the reference direction D side of the protruding base portion 4421 along the reference direction D, and the cross-sectional area of the cross section cut in a plane orthogonal to the reference direction D decreases as the protrusion portion 442 goes along the reference direction D. May include a protruding insertion portion 4422 having.

The end surface of the plane formed at the reference direction D side end of the valve disk 44 may be orthogonal to the reference direction D. That is, the end surface of the protrusion 442 on the reference direction D side may form an end surface as if it were cut by a plane perpendicular to the reference direction D.

When the valve disc 44 linearly moves along the reference direction D, the effective region of the flow path formed between a part of the outer surface of the valve disc 44 closest to the valve port 211 and around the valve port 211. It may be formed so that the shape of (A) is formed like the side surface of a truncated cone. Here, the effective region (A) means a portion having the narrowest width among the portions of the entire flow path and determining the total flow rate flowing along the flow path.

In order to form such an effective region (A), a tapered shape is formed in which the cross-sectional area of the cross section cut in a plane perpendicular to the reference direction D decreases as the protruding insertion portion 4422 of the valve disk 44 goes along the reference direction D. May have. Further, the width of the flow path formed in the side surface shape of such a truncated cone can be changed linearly in proportion to the displacement of the valve disk 44 in the reference direction D or the direction opposite to the reference direction D. , The shape of the valve disk 44 may be formed.

Although it has been described above that all the components constituting the embodiment of the present invention are combined or operate in combination, the present invention is not necessarily limited to such an embodiment. .. That is, as long as it is within the scope of the present invention, all the components may be selectively combined with one or more to operate. In addition, the terms such as "including", "constituting", and "having" described above mean that the component can be inherent unless otherwise opposed. Rather than excluding other components, it must be interpreted as being able to include other components further. All terms, including technical or scientific terms, have the same meaning as generally understood by those with ordinary knowledge in the technical field to which the present invention belongs, unless otherwise defined. Commonly used terms, such as those defined in the dictionary, must be construed to be consistent with the contextual meaning of the relevant technology and are ideal or excessive unless explicitly defined in this application. Not interpreted in a formal sense.

The above description is merely an exemplary explanation of the technical idea of the present invention, and any person having ordinary knowledge in the technical field to which the present invention belongs can view the essential characteristics of the present invention. Various corrections and modifications should be possible within the range that does not come off. Therefore, the embodiments disclosed in the present invention are not for limiting the technical idea of the present invention, but for explaining the technical idea, and such an embodiment limits the scope of the technical idea of the present invention. It's not something. The scope of protection of the present invention shall be construed according to the following claims, and all technical ideas within the equivalent scope shall be construed as being included in the scope of rights of the present invention. ..

1, 2, 100: Valve 10: Operating assembly 11, 104: Drive unit 12: Needle shaft 13: Needle nut 14, 44, 102: Valve disc 16, 105: Fastener 20, 101: Body 21: Main body 22 : Branch 30: Clip 31: Insertion part 32: Handle part 103: Connecting member 111: Connecting part 112: Drive part fastening hole 121: One end of needle shaft 122: Male thread 123: Large diameter part 124: Shaft groove 125: Small diameter part 126: Fixing groove 131: Inner hole 132: Needle nut fastening hole 133: Clip insertion groove 134: Female thread 141, 441: Pillar portion 142, 442: Protruding portion 143: End surface 144: Disc groove 151: Nut ring 152: Shaft Ring 153: Buffer ring 154: Disc ring 155: Fixed ring 210: Internal space 211, 1012: Valve port 212: Center hole 213: Clip insertion port 214, 1011: Valve sheet 4411: Bottom surface of pillar 4421: Protruding base 4422 : Protruding insertion part A: Effective area of the flow path D: Reference direction

Claims (15)

A drive unit that generates a driving force, a needle shaft whose one end is connected to the drive unit so as to linearly move by receiving the transmission of the drive force from the drive unit, and a linear motion of the needle shaft that is coupled to the drive unit. An operating assembly including a needle nut having an inner hole through which the needle shaft penetrates to guide the needle shaft and a valve disc coupled to the other end of the needle shaft.
A body having a valve port that is connected to the working assembly and is inserted inside so that water can flow and is selectively opened and closed by linear motion of the valve disk.
A valve comprising a clip that secures the body and the working assembly so that the body and the working assembly do not separate from each other. The body includes a clip insertion slot formed by penetrating a portion surrounding the needle nut.
The needle nut includes a clip insertion groove recessed inward from a portion of the outer surface inserted inside the body.
The valve according to claim 1, wherein the clip is inserted into the clip insertion groove while penetrating the clip insertion port to fix the body and the working assembly. The clip is
The clip insertion groove, the insertion portion inserted into the clip insertion port, and
The valve according to claim 2, wherein the insertion portion includes a handle portion having a shape bent and extended from the insertion portion so that the insertion portion is arranged outside the body when fixing the body and the needle nut. The valve disc
The valve according to claim 1, further protruding from the needle nut along the reference direction, coupled to the reference direction end of the needle shaft and having a convex shape along the reference direction. The valve according to claim 4, wherein the plane formed at the reference direction end of the valve disk is orthogonal to the reference direction. The valve disc
When the valve disc moves linearly along a reference direction, the effective region of the flow path formed between the circumference of the valve opening and the outer surface of the valve disc most adjacent to the valve opening is a truncated cone. The valve according to claim 1, which is formed so as to be formed like a side surface of the valve. Further including an annular disc ring inserted into a disc groove formed inwardly recessed from the outer surface of the valve disc.
The outer surface of the disc ring contacts the inner surface of the body that defines the valve opening so that the valve opening is closed when the valve disk moves along a reference direction and is inserted into the valve opening. , The valve according to claim 1. The valve disc
A pillar portion formed in a columnar shape smaller than or the same as the diameter of the valve opening,
Includes a protrusion formed in a convex shape along the reference direction from the reference direction side of the pillar portion.
The valve according to claim 7, wherein the disc groove is formed by being recessed inward from the outer surface of a portion where the pillar portion and the protruding portion are in contact with each other. The valve according to claim 7, wherein the disc ring is a quad ring having a cross-sectional shape having four protruding portions. The valve disc
A column portion formed in a columnar shape having a bottom surface having a diameter larger than the diameter of the valve port,
Including a protruding portion formed by projecting from the reference direction side of the pillar portion in a convex shape along the reference direction so as to be inserted into the valve opening.
Claimed that a step is formed at a portion where the pillar portion and the protruding portion are in contact with each other so that the lower surface of the pillar portion comes into contact with a valve sheet formed around the valve opening when the valve port is closed. The valve according to 1. The protrusion is
A protrusion that protrudes from the column portion in a columnar shape along the reference direction and has a bottom surface that is smaller than or has the same diameter as the diameter of the valve opening so that the valve port is fitted into the valve port when the valve port is closed. The base and
A protrusion insertion portion having a shape that protrudes from the reference direction side of the protrusion base portion along the reference direction and has a shape in which the cross-sectional area of a cross section cut by a plane orthogonal to the reference direction decreases as the reference direction is followed. The valve according to claim 10. The valve according to claim 1, wherein the valve disc is made of a material containing Teflon. A male thread is formed on a part of the outer surface of the needle shaft.
A female thread that meshes with the male thread of the needle shaft is formed on a part of the inner surface of the needle nut that defines the inner hole.
The valve according to claim 1, wherein the needle shaft linearly moves along the inner surface of the needle nut while rotating by a driving force transmitted from the driving unit. The working assembly further includes an annular shaft ring that contacts the inner surface of the needle nut that is coupled to the outer surface of the needle shaft and defines the inner hole so as to maintain watertightness.
The valve according to claim 1, wherein the shaft ring is a quad ring having a cross-sectional shape having four protruding portions. A drive unit that generates a driving force, a needle shaft whose one end is connected to the drive unit so as to linearly move by receiving the transmission of the drive force from the drive unit, and a linear motion of the needle shaft that is coupled to the drive unit. An operating assembly including a needle nut having an inner hole through which the needle shaft penetrates to guide the needle shaft and a valve disc coupled to the other end of the needle shaft.
Includes a body internally provided with a valve opening that is coupled to the working assembly and is inserted therein so that water can flow and is selectively opened and closed by linear motion of the valve disc.
The valve disc is coupled to the reference direction end of the needle shaft that further protrudes from the needle nut along the reference direction, has a convex shape along the reference direction, and the valve disc is along the reference direction. When moving linearly, the effective region of the flow path formed between the circumference of the valve opening and the outer surface of the valve disk closest to the valve opening is formed like a side surface of a truncated cone. Formed into a valve.

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