KR102271061B1 - Flow detection equipment - Google Patents

Abstract

The present invention relates to a flow detection device comprising: a housing having an inlet and an outlet formed respectively at upper and lower ends, having a waterway formed inside, and having a combination hole formed on an outer surface; a housing cover combined with the combination hole of the housing; a switch installed on the outer surface of the housing; and a driving plate, which has a downward protruding resistance plate formed on the inner wall surface of the waterway of the housing, installed to be able to rotate. Accordingly, water moving upward through the waterway generates friction on the bottom surface of the driving plate and the resistance plate, thereby increasing the resistance of the driving plate while increasing the frictional area of water to adjust the rotating speed of the driving plate. According to the present invention, the resistance plate is formed to protrude from the bottom surface at both sides of the driving plate, so there is no risk of an interval between the waterway and the driving plate being reduced, and water is rubbed on the bottom surface of the driving plate and the resistance plate to increase friction while increasing the area of friction. Specifically, the driving plate is operated sensitively by the resistance of water and can be rotated swiftly owing to the increase of friction. Also, the flow of water can be detected accurately owing to the swift operation of the driving plate, the pressure of water supplied to the waterway can be reduced to be proportionate to the resistance of the driving plate. In addition, a flow path detection device can be installed in a pipeline having various water pressures to detect whether water flows in the pipeline, thereby improving the reliability of a product.

Description

Flow detection equipment

The present invention relates to a flow rate detecting device, and more particularly, to a flow rate detecting device in which a resistance plate for increasing the frictional area of water is formed on a driving plate, and the driving plate is rotated by the frictional force of water rubbed against the driving plate and the resistance plate. it's about

In general, a flow rate detection device is a device for controlling the combustion of a combustion device by detecting the flow and flow rate of direct water or heating water in a water heater or boiler.

At this time, according to the type of sensor installed in the flow rate detection device, it is divided into a switch method and a rotation speed detection method to detect the flow amount of the flow rate.

In particular, the switch method is configured in such a way that the contact is on/off according to the flow of the fluid, and detects whether the fluid flows.

Patent Document 1 shows a conventional flow sensor body. Referring to this, a direct water inlet is formed in the lower part in a hollow shape, a direct water outlet is formed on one side of the upper side, and a reed switch mounting part in which the reed switch is accommodated is formed on the outer surface. A body for guiding water flowing in through the direct water inlet to be discharged to the direct water outlet by forming a direct water supply body and a body inserted and coupled into the direct water supply body, the lower end communicating with the direct water inlet, and forming a hollow part communicating with the direct water outlet on the outer surface and magnetic paddles rotatably installed on the inner circumferential surface of the body and rotated to approach the reed switch by the water pressure of water supplied to the body.

In particular, a flow limiting valve is installed at the lower end of the body to control the amount of water supplied into the body through a direct water inlet.

That is, when water is supplied to the direct water inlet, this water is supplied to the body through the flow limiting valve and then soars upward to rotate the magnetic paddle.

Then, the magnetic of the magnetic paddle approaches the reed switch, and at this time, the reed switch is operated to detect fluid flow.

Then, the water that soars directly above the body is changed to the direction of movement after it collides with the upper surface of the body and is discharged through the direct water outlet.

However, in Patent Document 1 as described above, water moving directly upward through the direct water inlet is easily passed upward through the side of the link member, thereby reducing the frictional force of water, and the link member cannot rotate due to the decrease in the frictional force of water. The link member is positioned in place while passing in this direction, and the operation of the reed switch is limited. At this time, it is difficult to determine whether the water flow is due to a malfunction of the reed switch, so it is difficult to check the water supply amount or water flow In particular, it is necessary to increase the frictional force of water rubbing against the link member by supplying a relatively high water pressure to rotate the link member, and accordingly, the water pressure of water discharged through the direct water outlet is increased, thereby reducing the reliability of the product. have.

US 10-2016-0069532 A

The present invention is to solve the problems as described above, and an object of the present invention is to form an outlet and an inlet in each of the upper and lower ends, a water channel is formed inside, and a housing having a coupling hole formed on the outer surface thereof, By coupling the housing cover to the coupling hole of the housing, installing a switch on the outer surface of the housing, and rotatably installing a drive plate having a resistance plate protruding downward on the inner wall of the water channel of the housing, the water channel is provided on the bottom surface of the drive plate and the resistance plate. An object of the present invention is to provide a flow rate detection device for controlling the rotational speed of the driving plate by increasing the resistance of the driving plate while increasing the frictional area of the water by making the water moving upward through the friction.

In order to achieve the object of the present invention as described above, the flow rate detection device according to the present invention has a hollow shape, and forms an inlet at the lower end, and an outlet at the upper end opposite to the inlet, and through the inlet on the inside a housing having a water passage guiding the introduced water to be discharged to the outlet, and having a coupling hole communicating with the water passage on an outer surface of the housing; a housing cover which is inserted into the coupling hole of the housing to seal the water channel and to form a pair of rotation support walls protruding in the direction of the water channel; a switch fixedly installed on an outer surface opposite to the coupling hole of the housing; One end is rotatably installed on the inner wall surface of the water channel of the housing in a plate shape, and a magnet is formed on the upper surface to be close to the switch to operate the switch, and to protrude downward on both sides of the bottom surface to move upward through the water channel It is characterized in that it is composed of; a driving plate having a resistance plate that increases the friction area of water.

The flow rate detection device according to the present invention has a hollow shape, an inlet is formed at the lower end, an outlet is formed at the upper end opposite to the inlet, and water introduced through the inlet on the inside is discharged to the outlet. a housing in which a coupling hole communicating with the water channel is formed on an outer surface of the housing; a housing cover which is inserted into the coupling hole of the housing to seal the water channel and to form a pair of rotation support walls protruding in the direction of the water channel; a switch fixedly installed on an outer surface opposite to the coupling hole of the housing; One end is rotatably installed on the inner wall surface of the water channel of the housing in the form of a plate, and a magnet is formed on the upper surface to be close to the switch to operate the switch, and the friction area of water moving upward through the water channel is reduced on the upper surface It is characterized in that it is composed of a drive plate having a flow rate control hole formed therein.

In the flow rate detection device according to the present invention, the housing, by forming a switch cover on the outer surface opposite to the coupling hole, characterized in that to accommodate the switch.

In the flow rate detecting device according to the present invention, the housing is characterized in that a filter is further formed in a water channel between the inlet and the driving plate.

In the flow rate detection device according to the present invention, the driving plate is characterized in that it further forms a magnet cover to cover the magnet.

In the flow rate detection device according to the present invention, the resistance plate is characterized in that it is formed to protrude directly downward from both sides of the bottom surface of the driving plate.

In the flow rate detection device according to the present invention, the resistance plate is characterized in that it further forms a curved surface or an arcuate curved surface on the surfaces facing each other.

In the flow rate detecting device according to the present invention, the housing cover has a locking jaw protruding in the waterway at one end, and the driving plate is formed to protrude downwardly at one end, and rotates to be caught by the locking jaw. It is characterized in that the inclined surface is further formed to limit the rotation angle of the driving plate.

In the flow rate detecting device according to the present invention, the housing cover has a locking jaw protruding in the waterway at one end, and the driving plate is formed to protrude downwardly at one end, and rotates to be caught by the locking jaw. It is characterized in that the inclined surface is further formed to limit the rotation angle of the driving plate.

In the flow rate detection device according to the present invention, the driving plate is characterized in that both ends of the inclined surface are joined to one end of the resistance plate.

In the flow rate detecting device according to the present invention, the driving plate is characterized in that the auxiliary flow rate control hole is further formed on the upper surface of the inclined surface.

According to the present invention, resistance plates are protruded from the bottom surfaces of both sides of the driving plate, so that there is no fear of a decrease in the distance between the water channel and the driving plate. , In particular, by this frictional force improvement, the driving plate is sensitively operated by the resistance of water, so that the driving plate can be rotated quickly, and also, it is possible to accurately detect whether water flows through the rapid operation of the driving plate, It is possible to reduce the water pressure of water supplied into the conduit in proportion to the resistance force, and also, by installing a flow path sensing device in the conduit having various water pressures, it is possible to detect whether or not the flow of water flowing into the conduit is possible, thereby improving the reliability of the product There are advantages.

1 is a perspective view showing a flow rate detection device according to a first embodiment of the present invention.
Figure 2 is an exploded perspective view of Figure 1;
3 is a side cross-sectional view of the flow rate detection device according to the first embodiment of the present invention.
4 is a side cross-sectional view showing a state in which the driving plate of the flow rate detection device according to the first embodiment of the present invention is rotated upward.
5 is a view showing another embodiment of the drive plate of the flow rate detection device according to the first embodiment of the present invention.
6 is an exploded perspective view of a flow rate detection device according to a second embodiment of the present invention;

Hereinafter, embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

[First embodiment]

1 to 5 , the housing 100 has a hollow shape, an inlet 101 is formed at the lower end, and an outlet 102 is formed at the upper end opposite to the inlet 101 , and the inlet port on the inside A water passage 103 for guiding the water introduced through 101 to be discharged to the outlet 102 is formed, and a coupling hole 104 communicating with the water passage 103 is formed on the outer surface.

Preferably, the inlet 101 and the outlet 102 of the housing 100 are positioned on different vertical lines.

The housing 100 allows the housing cover 200 to be inserted into the coupling hole 104 to seal the coupling hole 104 .

The housing 100 further forms a stepped portion 100a on the inner wall surface of the water channel 103 to support and support the rotation support wall portion 202 of the housing cover 200 entering into the coupling hole 104. .

The stepped portion 100a supports the rotation support wall portion 202 to prevent the rotation support wall portion 202 from sagging downward.

The housing 100 accommodates the switch 300 by forming a switch cover 105 on an outer surface opposite to the coupling hole 104 .

The switch cover 105 is formed on the same arc as the magnet 401 of the rotating driving plate 400 .

The switch cover 105 is preferably recessed in the inner direction from the outer surface of the housing 100 .

The housing 100 further forms a filter 106 in the water channel 103 between the inlet 101 and the driving plate 400 .

The filter 106 filters out foreign substances contained in the water moving in the direction of the driving plate 400 through the water channel 103 .

The housing cover 200 is inserted into the coupling hole 104 of the housing 100 to seal the water channel 103, and the rotation support wall part 202 protruding as a pair toward the water channel 103 direction. to form

The rotation support wall part 202 is inserted into the water channel 103 of the housing 100 and is seated on the stepped part 100a.

The housing cover 200 further forms an O-ring (O) on its outer surface.

The O-ring (O) is pressed into the gap between the housing cover 200 and the coupling hole 104, so that water leaks through the gap between the housing cover 200 and the coupling hole 104. block

The housing cover 200 forms a locking jaw 201 protruding in the inner direction of the water channel 103 at one end.

The locking protrusion 201 allows the inclined surface 403 of the driving plate 400 to be caught, thereby preventing the driving plate 400 from being rotated upward by a predetermined angle or more.

The switch 300 is fixedly installed on an outer surface opposite to the coupling hole 104 of the housing 100 .

The switch 300 is turned ON when the magnet 401 of the rotationally operated driving plate 400 approaches, and detects whether water flows through the water channel 103 .

The switch 300 is turned OFF as the magnet 401 moves away.

The switch 300 is installed on the switch cover 105 of the housing 100 and is positioned on the same arc as the magnet 401 of the driving plate 400 .

The driving plate 400 has a plate shape, one end is rotatably installed between the rotation support wall parts 202 , and is close to the switch 300 on the upper surface to form a magnet 401 for operating the switch 300 . And, a resistance plate 402 is formed on both sides of the bottom surface to increase the friction area of water protruding downward and moving upward through the water channel.

The driving plate 400 is rotated by being pressed upward by the hydraulic pressure of water flowing directly upward through the water channel 103 .

The magnet 401 is rotated integrally by the driving plate 400 and is in close contact with the inner wall surface of the water channel 103 so as to be close to the switch 300 to operate the switch 300 .

The driving plate 400 further forms a magnet cover 400a surrounding and covering the magnet 401 .

The magnet cover 400a prevents the magnet 401 from coming into contact with water.

The resistance plate 402 increases the resistance of the driving plate 400 by friction with water moving upward through the water channel 103 while delaying the flow of water moving in both directions of the driving plate 400 . .

The resistance plate 402 is formed to protrude directly downward from both sides of the bottom surface of the driving plate 400 .

The height of the resistance plate 402 can be manufactured to have different heights by the user, and the height is proportional to the friction area on which water is rubbed, so that the friction area on which water is rubbed according to the height of the resistance plate 402 is relatively As it increases or decreases, the resistive force of the driving plate 400 is changed.

The delay time for the flow of water passing over the resistance plate 402 is proportional to the area of the resistance plate 402 .

The resistance plate 402 further forms a curved surface 402a or an arcuate curved surface 402b on surfaces facing each other.

The curved surface 402a or the arcuate curved surface 402b of the resistance plate 402 increases the friction area on which water moving upward through the water channel 103 is rubbed, thereby increasing the resistance of the driving plate 400 . increase

The driving plate 400 is formed to protrude downwardly at one end and rotated to be caught by the engaging projection 201 , further forming an inclined surface 403 limiting the rotation angle of the driving plate 400 .

The lower surface of the inclined surface 403 is rubbed against the water pressure of water moving directly upward through the water channel 103 to rotate the driving plate 400 at a predetermined angle.

The inclined surface 403 is caught by the locking protrusion 201 of the housing cover 200 to prevent the driving plate 400 from being rotated by more than a predetermined angle.

It is preferable that the inclined surface 403 is caught by the locking jaw 201 to form a horizontal state.

The driving plate 400 is bonded so that both ends of the inclined surface 403 are connected to one end of the resistance plate 402 .

The driving plate 400 blocks water from leaking through a gap between the inclined surface 403 and the resistance plate 402 .

The flow rate detection device according to the first embodiment of the present invention configured as described above is used as follows.

First, one end of the driving plate 400 is rotatably coupled between the rotation support wall parts 202 of the housing cover 200, and the housing cover 200 to which the driving plate 400 is coupled is inserted into the coupling hole. By inserting and coupling at 104 , the coupling hole 104 of the housing 100 is sealed.

At this time, the rotation support wall portion 202 inserted into the water channel 103 of the housing 100 is seated on the stepped portion 100a, and the rotation support wall portion 202 is prevented from sagging downward.

At this time, the housing cover 200 forms an O-ring (O) on its outer surface, and pressurizes the O-ring (O) between the housing cover 200 and the coupling hole 104, so that the housing cover 200 ) and the gap between the coupling hole 104 is sealed.

In addition, the driving plate 400 forms a magnet cover 400a on its upper surface, receives the magnet 401 in the magnet cover 400a, and places the magnet 401 on the upper surface of the driving plate 400 . make it

In particular, the driving plate 400 has resistance plates 402 extending downwardly on both bottom surfaces thereof, and the resistance plates 402 and the water channels 103 are spaced apart from each other by a predetermined distance.

Then, the switch 300 is inserted and fixed into the switch cover 105 of the housing 100 so that the switch 300 and the magnet 401 of the driving plate 400 are positioned on the same arc.

When water is supplied to the inlet 101 formed in the housing 100 of the flow rate detection device coupled as described above, the water passes through the filter 106, and at this time, foreign substances contained in the water enter the filter 106. The filtered and purified water moves directly above the water channel 103 .

Here, it is preferable that the water pressure of the water moving directly above the water channel 103 is proportional to the water pressure of the water flowing in through the inlet 101 .

Subsequently, the water moving directly above the water channel 103 reaches the bottom surface of the driving plate 400 , and in this state, it rubs against the bottom surface of the driving plate 400 and presses the driving plate 400 upward. Thus, the driving plate 400 is rotated.

That is, the water moving upward through the water channel 103 presses the driving plate 400 upward while rubbing against the bottom surface of the driving plate 400, the resistance plate 402 and the inclined surface 403, The friction area of the water rubbed against the driving plate 400 is increased, and accordingly, the resistance to the driving plate 400 is increased.

Here, when the resistance plate 402 of the driving plate 400 is formed to be relatively high, the friction area on which water rubs is increased in proportion to the height of the resistance plate 402 and the By increasing the resistance, the water pressure of the water moving directly upward through the water channel 103 can be formed to be relatively low.

On the other hand, when the resistance plate 402 of the driving plate 400 is formed to be relatively low, the friction area on which water rubs is reduced in proportion to the height of the resistance plate 402 and the The resistance is reduced, so that the water pressure of the water moving directly upward through the water channel 103 can be made relatively high.

If the water pressure of the water moving directly upward through the water channel 103 is the same, when the resistance plate 402 is formed to be high, the resisting force of the driving plate 400 is increased to increase the resistance of the driving plate 400 . The rotation speed or rotation angle is increased.

Conversely, when the resistance plate 402 is formed low, the resistance force on the driving plate 400 is reduced, so that the rotation speed of the driving plate 400 is relatively reduced or the rotation angle of the driving plate 400 is decreased. relatively low

Then, the driving plate 400 is pushed and rotated upward by the hydraulic pressure of the water moving upward, thereby bringing the magnet cover 400a into close contact with the inner wall surface of the water passage 103 .

At this time, the magnet 401 installed in the magnet cover 400a turns on the switch 300 installed in the switch cover 105, and the switch 300 outputs a signal to the outside, so that the water channel ( 103) detects the flow of water moving directly upward.

Here, the inclined surface 403 of the driving plate 400 is caught by the clasp 201 of the housing cover 200 to prevent the driving plate 400 from being rotated by a predetermined angle or more.

Then, the water passing through the resistance plate 402 is moved upward through a gap between the driving plate 400 and the water channel 103 and discharged to the outlet 102 .

On the other hand, when the water flowing into the inlet 101 is blocked, the water supplied to the water channel 103 is blocked and the water pressure of the water pressing the driving plate 400 is released at the same time as the driving plate 400 . It is returned to the original position by this free fall method.

At this time, while the magnet 401 is rotated downward by the driving plate 400 , it moves away from the switch 300 , and accordingly, the switch 300 is turned OFF.

[Second embodiment]

In the following description, the same reference numerals are used for the same components as those of the first embodiment, and detailed descriptions thereof are omitted.

Referring to FIG. 6 , the driving plate 400 ′ has a plate shape, one end is rotatably installed between the rotation support wall parts 202 , and is close to the switch 300 on the upper surface to operate the switch 300 . A magnet 401 is formed, and a flow rate control hole 404 is formed on the upper surface to reduce the frictional area of water moving upward through the water channel.

The driving plate 400 ′ is rotated by being pressed upward by the hydraulic pressure of water flowing directly upward through the water channel 103 .

The magnet 401 is integrally rotated by the driving plate 400 ′ and is in close contact with the inner wall surface of the water channel 103 so as to be close to the switch 300 to operate the switch 300 .

The driving plate 400 ′ further forms a magnet cover 400a that surrounds and covers the magnet 401 .

The magnet cover 400a prevents the magnet 401 from coming into contact with water.

The size of the diameter of the flow control hole 404 can be adjusted by the user, and the friction area rubbed against the bottom surface of the driving plate 400 ′ is increased or decreased so as to be inversely proportional to the diameter of the flow control hole 404 , The resistance of the driving plate 400' is changed.

It is preferable that the resistance force of the driving plate 400' is proportional to the friction area of the water rubbed against the bottom surface of the driving plate 400'.

The driving plate 400 ′ further forms an auxiliary flow rate adjustment hole 403a on the upper surface of the inclined surface 403 .

The auxiliary flow control hole 403a reduces the area of the inclined surface 403 , thereby reducing the frictional area of water rubbing against the inclined surface 403 .

The size of the diameter of the auxiliary flow control hole 403a can be adjusted by the user, and the friction area rubbed against the bottom surface of the inclined surface 403 is increased or decreased in inverse proportion to the diameter size of the auxiliary flow control hole 403a.

The driving plate 400' is formed to protrude downwardly at one end, and rotated to be caught by the engaging protrusion 201, further forming an inclined surface 403 for limiting the rotation angle of the driving plate 400'.

The bottom surface of the inclined surface 403 is rubbed against the water pressure of water moving directly upward through the water channel 103 to rotate the driving plate 400' at a predetermined angle.

The inclined surface 403 is caught by the locking protrusion 201 of the housing cover 200 to prevent the driving plate 400 from being rotated by a predetermined angle or more.

It is preferable that the inclined surface 403 is caught by the locking jaw 201 to form a horizontal state.

The flow rate detection device according to the second embodiment of the present invention configured as described above is used as follows.

First, one end of the driving plate 400' is rotatably coupled between the rotation support wall parts 202 of the housing cover 200, and the housing cover 200 to which the driving plate 400' is coupled is removed. The coupling hole 104 of the housing 100 is sealed by being inserted into the coupling hole 104 .

At this time, the rotation support wall portion 202 inserted into the water channel 103 of the housing 100 is seated on the stepped portion 100a, and the rotation support wall portion 202 is prevented from sagging downward.

At this time, the housing cover 200 forms an O-ring (O) on its outer surface, and pressurizes the O-ring (O) between the housing cover 200 and the coupling hole 104, so that the housing cover 200 ) and the gap between the coupling hole 104 is sealed.

In addition, the driving plate 400' has a magnet cover 400a formed on its upper surface, and the magnet 401 is accommodated in the magnet cover 400a, and a magnet 401 is formed on the upper surface of the driving plate 400'. place the

Then, the switch 300 is inserted and fixed into the switch cover 105 of the housing 100 so that the switch 300 and the magnet 401 of the driving plate 400' are positioned on the same arc. .

When water is supplied to the inlet 101 formed in the housing 100 of the flow rate detection device coupled as described above, the water passes through the filter 106, and at this time, foreign substances contained in the water enter the filter 106. The filtered and purified water moves directly above the water channel 103 .

Here, it is preferable that the water pressure of the water moving directly above the water channel 103 is proportional to the water pressure of the water flowing in through the inlet 101 .

Then, the water moving directly above the water channel 103 reaches the bottom surface of the driving plate 400', and in that state rubs the driving plate 400' while rubbing the driving plate 400'. By pressing upward, the driving plate 400' is rotated.

At this time, a flow rate control hole 404 of a predetermined diameter is formed in the driving plate 400', and accordingly, the driving plate ( 400') is reduced.

That is, the water moving upward through the water channel 103 presses the driving plate 400' upward while rubbing against the bottom surface of the driving plate 400' around the flow rate control hole 404, The friction area of the water rubbed against the driving plate 400' is reduced, and accordingly, the resistance of the driving plate 400' is reduced.

Here, when the flow rate control hole 404 of the driving plate 400 ′ is formed to be relatively large, the friction area on which water rubs is reduced so as to be inversely proportional to the size of the flow rate control hole 404 and the driving plate 400 ') is reduced, so that the water pressure of water moving directly upward through the water channel 103 can be formed to be relatively high.

On the other hand, when the flow rate control hole 404 of the driving plate 400' is formed to be relatively small, the friction area on which water is rubbed increases in inverse proportion to the size of the flow rate control hole 404 and the driving plate 400 ') is increased, so that the water pressure of water moving directly upward through the water channel 103 can be formed to be relatively low.

If the water pressure of the water moving directly upward through the water channel 103 is the same, if the resistance plate 402 is formed to be high, the resisting force on the driving plate 400' is increased, and the driving plate 400' ) of the rotation speed or rotation angle is increased.

On the contrary, when the resistance plate 402 is formed low, the resistance force on the driving plate 400' is reduced, so that the rotation speed of the driving plate 400' is relatively reduced or the driving plate 400' The rotation angle is relatively low.

Then, the driving plate 400' is pushed and rotated upward by the hydraulic pressure of the water moving upward, thereby bringing the magnet cover 400a into close contact with the inner wall surface of the water channel 103.

At this time, when the magnet 401 installed in the magnet cover 400a turns on the switch 300 installed in the switch cover 105, the switch 300 outputs a signal to the outside, so that the water channel ( 103) detects the flow of water moving directly upward.

In addition, the inclined surface 403 of the driving plate 400 ′ is caught by the clasp 201 of the housing cover 200 to prevent the driving plate 400 ′ from being rotated by more than a predetermined angle.

Here, the auxiliary flow rate adjustment hole 403a is formed in the inclined surface 403, and the friction area of water rubbed against the inclined surface 403 bottom surface is increased or decreased in inverse proportion to the diameter size of the auxiliary flow rate adjustment hole 403a. .

At this time, when the size of the auxiliary flow control hole 403a is relatively large, the friction area on which water rubs is reduced in inverse proportion to the size of the auxiliary flow control hole 403a, and the resistance force of the driving plate 400' By reducing the rotation speed of the driving plate 400' is reduced.

In addition, when the size of the auxiliary flow control hole 403a is relatively small, the friction area on which water is rubbed is increased in inverse proportion to the size of the auxiliary flow control hole 403a to increase the resistance of the driving plate 400'. By increasing, the rotation speed of the driving plate 400' is increased.

That is, the auxiliary flow rate control hole 403a is further formed on the inclined surface 403 of the driving plate 400 ′ on which the flow rate control hole 404 is formed to adjust the rotational speed of the driving plate 400 ′.

Then, the water passing through the resistance plate 402 is moved upward through a gap between the driving plate 400 and the water channel 103 and discharged to the outlet 102 .

On the other hand, when the water flowing into the inlet 101 is blocked, the water supplied to the water channel 103 is blocked and at the same time the water pressure of the water pressing the driving plate 400 ′ is released, so that the driving plate 400 ') is returned to the original position by the free fall method.

At this time, the magnet 401 is rotated downward by the driving plate 400 ′, moving away from the switch 300 , and accordingly, the switch 300 is turned OFF.

As described above, the resistance plate is formed on the driving plate, and the resistance plate is formed to protrude from the bottom surfaces of both sides of the driving plate to increase the frictional force of the driving plate by rubbing the water in the water channel with the resistance plate, so that the resistance plate is formed between the water channel and the driving plate. There is no fear of reducing the gap, and frictional force is improved at the same time as the friction area is increased by rubbing water on the bottom surface of the driving plate and the resistance plate. It can be rotated quickly, and whether or not water flows can be accurately detected by the quick operation of the driving plate, and the water pressure of water supplied into the water channel can be reduced in proportion to the resistance force of the driving plate.

The flow detection device according to the present invention described above is not limited to the above embodiment, and anyone with ordinary knowledge in the field to which the present invention belongs without departing from the gist of the present invention as claimed in the claims below It has its technical spirit to the extent that it can be implemented with various changes.

100: housing 100a: stepped portion
101: inlet 102: outlet
103: waterway 104: coupling hole
105: switch cover 106: filter
200: housing cover 201: locking jaw
202: rotation support wall 300: switch
400: drive plate 400a: magnet cover
401: magnet 402: resistance plate
402a: curved surface 402b: curved surface
403: inclined surface 403a: auxiliary flow control hole
404: flow control hole O: O-ring

Claims (11)

delete In a hollow shape, the inlet 101 is formed at the lower end, the outlet 102 is formed at the upper end opposite to the inlet 101, and the water introduced through the inlet 101 inside the outlet 102 a housing 100 in which a water channel 103 is formed to guide the discharge to the water channel 103 and a coupling hole 104 communicating with the water channel 103 is formed on the outer surface;
The housing cover 200 is inserted and coupled to the coupling hole 104 of the housing 100 to seal the water channel 103 and form a pair of rotation support wall parts 202 protruding in the direction of the water channel 103 . );
a switch 300 fixedly installed on an outer surface opposite to the coupling hole 104 of the housing 100;
In a plate shape, one end is rotatably installed between the rotation support wall parts 202, and a magnet 401 that is close to the switch 300 and operates the switch 300 is assembled on the upper surface, and the a driving plate 400' having a flow rate control hole 404 for reducing the frictional area of water moving upward through the water channel;
Flow rate detection device, characterized in that consisting of. 3. The method of claim 2,
The housing 100 is
Flow rate detection device, characterized in that by forming a switch cover (105) on the outer surface opposite to the coupling hole (104) to accommodate the switch (300). 3. The method of claim 2,
The housing 100 is
A flow rate detecting device, characterized in that a filter (106) is further formed in the water passage (103) between the inlet (101) and the driving plate (400'). 3. The method of claim 2,
The driving plate 400 'is,
Flow rate detection device, characterized in that further forming a magnet cover (400a) to cover the magnet (401). delete delete delete 3. The method of claim 2,
The housing cover 200,
At one end of the water channel 103, a protruding protrusion 201 is formed in the inner direction,
The driving plate 400 'is,
A flow rate detection device, characterized in that one end is formed to protrude downward and is rotated to be caught by the locking jaw (201), and an inclined surface (403) for limiting the rotation angle of the driving plate (400') is further formed. delete 10. The method of claim 9,
The driving plate 400 'is,
Flow rate detection device, characterized in that the auxiliary flow control hole (403a) is further formed on the upper surface of the inclined surface (403).

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