WO2011068312A2

WO2011068312A2 - Flow sensor and combustion device having same

Info

Publication number: WO2011068312A2
Application number: PCT/KR2010/007957
Authority: WO
Inventors: 민태식
Original assignee: 주식회사 경동나비엔
Priority date: 2009-12-03
Filing date: 2010-11-11
Publication date: 2011-06-09
Also published as: KR101132006B1; KR20110062656A; WO2011068312A3

Abstract

The present invention relates to a flow sensor and a combustion device having the same, in which the flow sensor is easily installed in and separated from a pipe body of the combustion device, thereby enabling maintenance work for the internal parts of the flow sensor to be readily conducted and increasing the capacity of a filter provided to a pipe having a limited length. In order to realize said purpose, the flow sensor of the present invention comprises: an instrument unit which mechanically moves along the flow of a fluid; and a sensor unit which senses the movement of the instrument unit, wherein the sensor unit is provided to the outside of the pipe inside the combustion device, and the instrument unit is positioned in the place corresponding to the sensor unit inside the pipe of the combustion device.

Description

Flow sensor and combustion device with same

The present invention relates to a flow sensor for detecting the flow rate of the fluid flowing into the combustion device, such as a water heater or boiler, and filtering and purifying the foreign matter contained in the fluid, and more specifically, a combustion device piping The flow sensor is designed to be easily installed and detached on the body to facilitate the maintenance work of the internal components of the flow sensor and to increase the capacity of the filter installed on the pipe of limited length. And it relates to a combustion device having the same.

Combustor having a configuration that can heat the water by using the burner in the combustion chamber includes a boiler and a water heater.

That is, a boiler used in a general home or a public building is used for heating or hot water, and a water heater is a device configured to enable the user to conveniently use hot water by heating cold water to a predetermined temperature within a short time.

1 is a schematic view showing the configuration of a conventional water heater.

Looking at the configuration of a conventional water heater, a filter (1) for filtering and purifying the foreign matter contained in the inflowing water on the direct water inflow pipe (5) in which the direct water flows, and a flow sensor (2) for measuring the flow rate of the incoming direct water ), The direct water flowing into the heat exchanger (8) is heated by heat exchange with combustion heat generated by the air and gas supplied from the blower (6) by the burner (7) to heat the hot water supply pipe (9) Is discharged through, on the hot water supply pipe (9) is provided with a flow control valve (4) for adjusting the supply flow rate of hot water.

In addition, a bypass pipe 5a is connected between the direct water inflow pipe 5 and the hot water supply pipe 9 to directly transfer the introduced direct water to the hot water supply pipe 9 without passing through the heat exchanger 8. It is configured to control the temperature of the hot water by mixing the hot water and direct water heated through the), the mixing valve 3 is provided on the bypass pipe (5a) is a direct water conveyed through the bypass pipe (5a) To control the flow rate.

2 is a cross-sectional view showing the internal configuration of a conventional flow sensor.

The conventional flow sensor 1 is provided with a moving passage of the fluid therein, the body 10 formed to face the inlet 11 and the outlet 12 of the fluid and the flow of fluid flowing into the inlet 11 Rotor 20 that rotates inside the body 10 by, the rotation center of the rotor 20 and the rotation axis 30 is coupled to a plurality of rotary blades 25 around the circumference, and the body 10 The holder 40 is fixed to support the rotating shaft 30, and the Hall sensor 60 for sensing the rotational speed of the magnet 50 provided on one side of the rotary blade 25.

Referring to the operation of the flow sensor 1 as follows.

When the fluid is introduced into the inlet 11, the rotary blade 25 and the rotary shaft 30 coupled with a predetermined direction around the rotary shaft 30 of the rotor 20 rotates integrally, at this time the flow rate of the fluid In proportion, the rotation speed of the rotor 20 is different.

One side of the rotor blade 25 of the rotor 20 is provided with a magnet 50, the N pole and the S pole cross each other, the rotor 20 is rotated so that the magnet pole (N pole and S pole cross each time) In 50), a magnetic signal is generated.

The hall sensor 60 is installed at one side of the body 10 at a predetermined distance from the magnet 50 to generate a frequency pulse corresponding to the magnetic signal generated from the magnet 50, and the controller ( In the drawing), the frequency pulse of the Hall sensor 60 is input to adjust the flow rate of the fluid based on the set flow rate.

The conventional flow sensor 1 having such a configuration separates the flow sensor 1 from the pipe in order to remove metal foreign matter stuck to the magnet 50 provided in the rotary blade 25 after being used for a predetermined period. Maintenance work will be performed.

However, the conventional flow sensor 1 has a structure in which the inlet 11 and the outlet 12 are coupled to both sides on the direct inlet pipe 5 so as not to be easy to separate, and to have an integral body. Rotor 20 is provided in the interior of the (10) has a problem that the cleaning of the rotary blade 25 is not easy even if the flow sensor 1 is separated from the inflow pipe (5).

In addition, the conventional flow sensor 1 is manufactured and installed as a separate component separate from the filter 2, there was a problem that the number of components inside the water heater increases.

In addition, the filter (2) is installed in the form of a net in the direction perpendicular to the flow direction of the direct inflow pipe (5) in order to increase the capacity of the filter (2) to form a long straight section of the pipe in which the filter (2) is installed Since there must be a problem in the space constraints for installing the filter (2).

The present invention has been made in order to solve the above problems, the flow sensor and the filter is composed of a single component, to facilitate the installation and separation in the piping body of the combustion machine to facilitate the maintenance work inside the flow sensor It is an object of the present invention to provide a flow sensor and a combustion device having the same that can be performed easily.

Another object of the present invention is to provide a flow sensor having a structure capable of maximizing the capacity of the filter on a pipe of a limited length and a combustion device having the same.

The flow sensor of the present invention for realizing the object as described above, in the flow sensor consisting of a mechanical unit moving mechanically in accordance with the flow of the fluid, and a sensor unit for detecting the movement of the mechanical unit, the sensor unit It is installed outside the pipe, the mechanism is characterized in that installed in a position corresponding to the sensor unit in the pipe inside the combustion device.

The mechanism part, the movement passage of the fluid is provided therein and the inlet and the outlet of the fluid is formed opposite to the body, and the center of rotation of the rotor to rotate in accordance with the flow of the fluid in the body to form a plurality of rotary wings around the coupling It consists of an upper cover that is coupled to the upper side of the body while supporting the upper end of the rotating shaft, the sensor unit, characterized in that consisting of a Hall sensor for sensing the rotational speed of the magnet provided on one side of the rotary blade.

A cone-shaped filter is inserted in the longitudinal direction on the fluid passage in the body.

The body includes a cylindrical upper body portion in which the filter is accommodated; and an inlet is formed between a plurality of partition walls extending downwardly inclined radially downward at intervals in a circumferential direction from a lower end portion of the upper body portion, and the plurality of partition walls The lower end of the lower body portion is connected to the horizontal horizontal flange portion; characterized in that consisting of.

O-ring is coupled between the outer surface of the lower end of the filter and the inner surface of the lower end of the upper body portion.

A plurality of locking portions protrude radially from the lower end of the filter, the movement of the filter in the flow direction of the fluid is caught by the lower end of the upper body portion located in the inlet.

The inner surface of the upper cover is characterized in that the flow rate adjustment ring for adjusting the cross-sectional area of the outlet by the pressure of the fluid is further provided.

Combustion apparatus having a flow sensor according to the present invention, the flow sensor; and a first connection portion coupled to the connection pipe inflowing direct water from the combustion device, the first connection portion is in communication with the first connection portion downward from one side And a pipe body having a second connection part which is inclined to extend to be exposed to the outside of the combustion device housing and to which the flow sensor is inserted and coupled.

A lower cover is coupled to a lower end of the second connector.

According to the flow sensor and the combustion apparatus having the same according to the present invention, since the flow sensor can be easily separated and combined from the piping body of the combustion device, the cleaning and maintenance of the internal components can be easily performed. There is this.

In addition, according to the present invention, by installing the flow sensor and the filter as a single part, the installation structure of the combustion device is simplified, and the filter capacity is increased by taking the structure in which the cone-shaped filter is inserted in the longitudinal direction of the inside of the flow sensor. And it has the advantage of reducing the installation space constraints of the filter.

In addition, according to the present invention, there is an advantage that can be adjusted within the range not exceeding the heat exchange allowable range by the flow rate adjustment ring provided inside the upper cover.

1 is a schematic view showing the configuration of a conventional water heater,

2 is a cross-sectional view showing the internal configuration of a conventional flow sensor,

3 is a cross-sectional view showing an internal configuration of a flow sensor according to the present invention;

4 is an exploded perspective view of a flow sensor according to the present invention;

5 is a plan view of a flow sensor according to the present invention;

6 is a cross-sectional view A-A of FIG.

7 is a cross-sectional view showing a state in which the flow sensor is installed in the combustion device.

100: flow sensor 101: inlet

102: outlet 110: body portion

120: upper body portion 130: lower body portion

140: upper cover 150: rotor

154: rotor blade 156: magnet

170: Hall sensor 180: filter

200: mixing valve 250: flow control valve

300: combustion device 310: combustion device housing

320: piping body 321: first connection portion

322: second connection portion 323: third connection portion

324: fourth connection portion 325: fifth connection portion

Hereinafter, the configuration and operation of the preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Figure 3 is a cross-sectional view showing the internal configuration of the flow sensor according to the invention, Figure 4 is an exploded perspective view of the flow sensor according to the invention, Figure 5 is a plan view of the flow sensor according to the invention, Figure 6 is a AA reference cross-sectional view of Figure 3 to be.

The flow sensor 100 according to the present invention is assembled into a single part by assembling a flow sensor for detecting the flow rate of the direct water flowing into the combustion device such as a water heater or a boiler and a filter for filtering and purifying foreign substances contained in the direct water. The mechanism part of the flow sensor 100 is inserted into the pipe body 320 extending to one side of the connection pipe in which the direct water flows into the structure, which makes the coupling and separation easy, and the sensor part that detects the movement of the mechanism part. It is characterized in that installed on the outside of the piping body 320.

3 and 4, the mechanism portion of the flow sensor 100 according to an embodiment of the present invention as a mechanically moving portion in accordance with the flow of the fluid, the fluid introduced through the inlet 101 formed in the lower portion Rotation in the body 110 by the flow of the fluid passing through the body 110 and the body 110 is provided with a moving passage of the fluid therein to pass toward the outlet 102 formed in the upper portion 110 The rotor 150 and the rotor 150 to form the center of rotation and the circumference to support the upper end of the rotating shaft 152 coupled with a plurality of rotary blades 154 can be coupled and separated to the upper side of the body 110 The upper cover 140 and the holder 160 is fixed to the inside of the body 110 while supporting the lower end of the rotating shaft 152.

In addition, a cone-shaped filter 180 is inserted and installed in the longitudinal direction on the fluid movement path inside the body 110 to maximize the filtering area.

The body 110 is a cylindrical upper body portion 120, the rotor 150 and the filter 180 is accommodated therein, and the lower body portion 130 is formed to extend to the lower side of the upper body portion 120 )

The lower body portion 130 has a plurality of partitions 132 are formed to extend radially inclined at intervals along the circumferential direction from the lower end of the upper body portion 120 inlet 101 between the plurality of partitions 132. The lower end of the partition wall 132 is connected to the circular horizontal flange portion 135.

As illustrated, the upper body part 120 may have a cylindrical shape in which an upper part in which the rotor 150 is accommodated and a lower part in which the filter 180 is accommodated have different diameters.

O-ring 181 is coupled between the outer surface of the lower end of the filter 180 and the inner surface of the lower end of the upper body portion 120, the filter 180 is moved upward from the lower side of the lower body portion 130 When the insert is inserted into the upper body portion 120 to be coupled to each other by the O-ring 181, the lower end of the filter 180 and the lower end of the upper body portion 120 are fitted and fixed to each other.

In addition, a plurality of locking portions 185 are radially protruded from the lower end of the filter 180, so that the locking portions (as shown in FIG. 5) when the filter 180 is inserted into the upper body portion 120. 185 is caught by the lower end of the upper body portion 120 located in the inlet 101, thereby limiting the movement of the filter 180 is pushed in the flow direction of the fluid.

As described above, in the present invention, since the filter 180 having a cone shape in the longitudinal direction is inserted and fixed on the fluid movement passage inside the upper body portion 120, the filter is installed in the vertical direction on the fluid movement passage. Compared to this, the filter capacity can be increased while simplifying the structure.

In addition, the present invention is characterized in that the upper cover 140 for supporting the rotating shaft 152 of the rotor 150 made of a structure that can be separated to the upper side of the upper body portion 120.

A stepped portion is formed at the lower end of the upper cover 140 so that the upper cover 140 is inserted into the upper end of the upper body part 120 to be coupled, and the outer side and the upper body part 120 of the lower part of the upper cover 140 are coupled to each other. O-ring 142 is coupled between the inner side of the upper end of the close contact is kept tight.

Alternatively, the upper cover 140 and the upper body portion 120 may be configured to be coupled in a screwing manner.

As the upper cover 140 and the upper body portion 120 is made of a detachable structure as described above, after the upper cover 140 is separated from the upper body portion 120, the upper cover 140 and the upper body portion 120 are installed inside the upper body portion 120. Since the rotor 150 can also be drawn out, it is possible to easily remove the foreign matter attached to the rotary blade 154 and the magnet 156.

In FIG. 3,

reference numerals

121 and 141 denote O-rings for maintaining airtightness when the flow sensor 100 is inserted into and coupled to the pipe body 320 to be described later.

Referring to Figure 6, the flow sensor 100 according to the present invention detects the flow rate and in addition to the function of filtering the foreign matter, the flow rate adjustment ring 145 on the inner side of the upper cover 140 to control the rapid flow rate of direct water ) Is further provided.

The flow control ring 145 is formed in a cylindrical housing 145a, a ring-shaped expansion and contraction member 145b inserted into the inner surface of the housing 145a, and integrally formed with the housing 145a. It consists of a fixing member (145c) for fixing the (145b).

The flow control ring 145 serves to adjust the flow rate of the direct water flowing through the outlet 102 into the heat exchanger 8 so as not to exceed the heat exchange capacity of the heat exchanger.

That is, when the water pressure of the direct water exceeds a predetermined range, the flow control ring 145 is deformed into a flat shape by the water pressure to reduce the cross-sectional area of the outlet 102 through which the direct water passes, and when the water pressure of the direct water drops again. The original convex shape is restored to widen the cross-sectional area of the outlet 102.

The flow sensor 100 having the above structure is installed inside the combustion device 300 such as a boiler or a water heater, and is inserted into and coupled to the inside of the pipe body 320 to form a flow path of direct water and hot water.

Here, the piping body 320 inside the combustion device 300 refers to an integral injection molding provided in the combustion device housing 310 to form a flow path as shown in FIG. 7.

The first lower portion 321 is coupled to the connection pipe 331 of the side in which the direct water flows into the lower right portion of the pipe body 320 and the combustion device housing 310 is inclined downward from one side of the first connection portion 321. It is extended so as to be exposed to the outside of the flow sensor 100 includes a second connecting portion 322 is inserted and coupled.

And the upper right side of the second connecting portion 322 of the pipe body 320 is extended so that the mixing valve 200 is inserted into the coupling and the connection pipe of the direct inflow pipe 5 introduced into the heat exchanger (8) side. 332 and a third connection portion 323 coupled to the connection pipe 333 of the hot water supply pipe 9 to which hot water heated from the heat exchanger 8 is supplied.

In addition, a fourth connection part 324 coupled to the connection pipe 334 through which hot water is discharged extends downward on the left side of the third connection part 323 of the pipe body 320, and the fourth connection part 324. On the upper side opposite to the flow control valve 250 is inserted into the fifth connection portion 325 is coupled is formed.

If the structure of the portion in which the flow sensor 100 is installed in the structure of the pipe body 320 will be described in more detail, the pipe body 320 is in communication with the connection pipe 331 is introduced into the water flow to the right It is downwardly inclined and extended to be exposed to the outside of the combustion device housing 310, the flow sensor 100 is inserted inward through the exposed end of the pipe body 320 and the lower cover 190 is coupled to the lower end.

According to the configuration of the combustor equipped with the flow sensor 100, as shown by the arrow in FIG. 7, the water flowing into the first connection portion 321 through the connection pipe 331 is a pipe body 320 Along the flow path in the direction of the downward inclined second connection portion 322 is introduced into the inlet 101 formed in the lower body portion 130, and then through the fluid movement passage inside the upper body portion 120 Will be moved to.

In addition, the direct moving water moving upwards removes foreign substances contained in the direct water while passing through the cone-shaped filter 180. Purified water is to continue to move to the upper side of the upper body 120 to rotate the rotary blade 154 of the rotor 150, the rotational speed of the magnet 156 provided on one side of the rotary blade 154 pipe body The sensor unit provided at one side of the 320 detects the flow rate of direct water.

The sensor unit may be configured as a hall sensor 170.

In this embodiment, the flow control valve 250 is described in the combustion device 300, but instead of the flow control valve 250, a flow control ring 145 may be used to control the flow rate of the fluid.

Direct water passing through the outlet 102 of the upper cover 140 by the flow control ring 145 is discharged after the supply amount is adjusted to a predetermined range is supplied to the heat exchanger (8).

As described above, according to the present invention, the flow sensor 100 can be easily coupled and separated from the outside of the combustion device 300, as well as the body 110 and the upper cover 140 are separated from the rotor 150. It is possible to easily clean the foreign matter attached to the rotary blade 154 and the magnet 156 of the inside, by inserting the cone-shaped filter 180 on the fluid movement passage inside the body 110 within the direct water. There is an advantage that can effectively remove the contained foreign matter.

It is apparent to those skilled in the art that the present invention is not limited to the above embodiments and can be practiced in various ways without departing from the technical spirit of the present invention. will be.

Claims

In the flow rate sensor consisting of a mechanism unit moving mechanically in accordance with the flow of the fluid, and a sensor unit for detecting the movement of the mechanism,

The sensor unit is installed on the outside of the pipe inside the combustion device, the mechanism is a flow sensor, characterized in that installed in a position corresponding to the sensor unit inside the pipe inside the combustion device.
The method of claim 1,

The mechanism part, the movement passage of the fluid is provided therein and the inlet and the outlet of the fluid is formed opposite to the body, and the center of rotation of the rotor to rotate in accordance with the flow of the fluid in the body to form a plurality of rotary wings around the coupling It consists of an upper cover that is coupled to the upper side of the body while supporting the upper end of the rotating shaft,

The sensor unit, the flow sensor, characterized in that consisting of a Hall sensor for detecting the number of revolutions of the magnet provided on one side of the rotary blade.
The method of claim 2,

The flow sensor, characterized in that the filter is formed in the longitudinal direction on the fluid movement passage in the body inserted in the longitudinal direction.
The method of claim 3,

The body,

A cylindrical upper body portion in which the filter is accommodated; and

An inlet is formed between a plurality of partition walls extending downwardly inclined radially downward at intervals along the circumferential direction from a lower end of the upper body portion, and lower ends of the plurality of partition walls are connected to a circular horizontal flange portion; Flow sensor, characterized in that made.
The method of claim 4, wherein

O-ring is coupled between the outer surface of the lower end of the filter and the inner surface of the lower end of the upper body portion.
The method of claim 4, wherein

A plurality of locking portions protrude radially from the lower end of the filter, the flow sensor is characterized in that the movement of the filter in the flow direction of the fluid is caught by the lower end of the upper body portion located in the inlet.
The method of claim 2,

Flow sensor, characterized in that the inner side of the upper cover is further provided with a flow control ring for adjusting the cross-sectional area of the outlet by the pressure of the fluid.
The flow sensor according to any one of claims 1 to 7; And

A first connection part coupled to a connection pipe into which direct water flows from a combustion device, and is communicated with the first connection part and extends downward from one side of the first connection part to be exposed to the outside of the combustion device housing so that the flow sensor is inserted A pipe body having a second connection portion coupled thereto;

Combustion apparatus having a flow sensor comprising a.
The method of claim 8,

Combustion apparatus having a flow sensor, characterized in that the lower cover is coupled to the lower end of the second connecting portion.