WO2016056765A1

WO2016056765A1 - Makeup water supply valve of boiler having air gap forming means

Info

Publication number: WO2016056765A1
Application number: PCT/KR2015/009713
Authority: WO
Inventors: 최성봉
Original assignee: (주)알코
Priority date: 2014-10-06
Filing date: 2015-09-16
Publication date: 2016-04-14
Also published as: GB201705831D0; GB2545847A

Abstract

According to the present invention, a makeup water supply valve of a boiler having an air gap forming means supplies makeup water to a heating water pipe by means of a simple operation of rotating an operation knob, and an air gap is automatically formed in the makeup water supply valve when the supplying of the makeup water is completed. Since the heating water pipe and a direct water pipe are maintained in a completely separated state by means of the air gap formed in the makeup water supply valve, the heating water flowing backward can be essentially prevented from flowing into the direct water pipe even if the heating water leaks and flows backward from the heating water pipe. In addition, a drain valve for discharging the heating water during the repair or replacement of the boiler is integrally formed at the makeup water supply valve of the present invention, thereby reducing an effort of separately providing the drain valve, and reducing costs.

Description

[Correction according to Rule 26.10.2015] Refill water supply valve of boiler with air gap forming means

The present invention relates to a supplementary water supply valve of a boiler having an air gap forming means, and supplementary water to block the inflow of the heating water flowed back through the supplemental water supply valve used when filling or replenishing the heating water into the direct pipe. The air gap is formed in the supply valve, and the drain port is integrally formed in the supplemental water supply valve so that the heating water can be easily and simply discharged during the repair or replacement of the boiler.

14 is a circuit diagram of a conventional general heating boiler.

As shown in FIG. 14, a conventional heating boiler 5 mainly uses heating by using a burner and a heat exchanger to circulate the heated heating water.

In addition, the boiler 5 is provided with a direct water pipe 2 separately from the heating water pipe 1 to use hot water.

When the boiler 5 is used for a long time, the heating water filled in the heating water pipe 1 of the boiler 5 is reduced by evaporation, so it is necessary to supplement the heating water.

To this end, as shown in FIG. 14, a supplemental water pipe (dotted line) connecting the direct water pipe 2 and the heating water pipe 1 is formed, and the supplemental water pipe is used only when replenishing the heating water. In this case, it should be blocked to prevent the inflow of heating water into the straight pipe.

To this end, the conventional method of blocking the back flow of the heating water by locking the supplementary water pipe through the on-off valve and the check valve is widely used. It is most preferable to completely separate the water pipe and the water pipe.

However, the supplemental water pipe which can separate the conventional heating water pipe and the direct water pipe has a problem in that the configuration is complicated and the price is high or it is inconvenient to use.

In addition, there is a problem that the drain valve for discharging the heating water is provided separately during the repair or replacement of the boiler to complicate the device and increase the price.

The prior art related to the refill water piping device is Korea Patent Publication No. 10-1992-0020155 (name of the invention: automatic replenishment of heating water of the forced hot water circulation boiler with a closed expansion tank).

The present invention has been made to solve the above problems of the prior art, the present invention can supply the supplementary water by connecting the heating water pipe and the direct water pipe in a simple operation when supplying the supplemental water and the supply of the supplementary water is completed When the air gap is automatically formed inside, it is possible to completely shut off the heating water pipe and the direct water pipe, and when it is necessary to discharge the heating water, it is possible to supply the replenishment water of the boiler that can discharge the heating water with the simple operation of opening the drain valve. It is an object to provide a valve.

The main object of the present invention is a direct inlet and a supplemental water supply port is formed and the main body is formed with an opening and closing port formed at one point on the flow path connecting the direct inlet and the supplemental water supply port therein and connected to the outside atmosphere on one side; A flow opening / closing valve installed inside the main body to selectively open and close the opening and closing hole, an air gap forming part coupled to the flow opening and closing valve and having a communication flow path formed therein, and selectively opening and closing the discharge hole of the main body; A check valve installed on the flow path between the direct water inlet and the replenishment water inlet of the main body, and an operation knob coupled to the flow path opening and closing valve to advance or retract the flow path opening and closing valve; When opening the opening and closing the air gap forming portion blocks the discharge hole of the main body, When the gas flow opening and closing valve closes the opening and closing port, the air gap forming part is formed by the supplementary water supply valve of the boiler, wherein the opening of the main body is opened.

In the replenishment water supply valve of the boiler, the flow path opening and closing valve preferably blocks the opening and closing in the direction in which water is introduced.

In the replenishment water supply valve of the boiler, the flow path opening and closing valve is formed on the circumferential surface with a pair of O-rings, the O-rings of the flow path opening and closing valve to open or close the discharge hole of the main body. Do.

In addition, to achieve the above object, the flow path opening and closing valve is further provided with a spring for pressurizing the flow path opening and closing valve to open and close the opening and closing the flow path opening and closing valve when removing the external force from the operating knob after the rotation of the operation knob. The actuating knob is preferably returned to its original position by the spring that is pressed.

In addition, the flow path opening and closing valve may be formed to block the opening and closing in the direction opposite to the direction in which water is introduced.

The apparatus may further include a heating water drain part connected to an internal space of the supplemental water supply port to discharge the heating water to the outside, wherein the heating water drain part includes a drain having a space open to the outside to discharge the heating water to the outside. A drain outlet for connecting a port, a space inside the replenishing water supply port of the main body, and a space of the drain port opened to the outside, and is installed to be movable in an internal space of the drain part, and close the drain outlet. It is preferable to include a drain actuated valve formed with a sealed seal for.

According to the supplementary water supply valve of the boiler according to the present invention, the supplementary water is supplied to the heating water pipe by a simple operation of rotating the operation knob, and when the supplementary water supply is completed, an air gap is automatically applied to the supplementary water supply valve. To form. Accordingly, since the heating water pipe and the direct water pipe are normally maintained in a completely separated state, even if the heating water leaks from the heating water pipe and flows back, it is possible to fundamentally block the inflow of the heated water back into the water pipe.

In addition, according to the supplementary water supply valve of the boiler according to the present invention by forming a drain portion in the supplementary water supply valve it is possible to easily and simply discharge the heating water during repair or replacement of the boiler.

1 is a perspective view showing an appearance of a supplemental water supply valve of a boiler having an air gap forming unit according to a first embodiment of the present invention;

2 is a cross-sectional view showing a state in which an opening and closing opening of a supplemental water supply valve of a boiler having an air gap forming means according to a first embodiment of the present invention is opened;

3 is a cross-sectional view illustrating a closed state of an opening and closing port of a supplemental water supply valve of a boiler having an air gap forming unit according to a first embodiment of the present invention;

4 is a perspective view illustrating an air gap opening valve and an air gap shutter of a supplemental water supply valve of a boiler having an air gap forming unit according to a first embodiment of the present invention;

5 is an exploded perspective view illustrating a coupling state of an operating knob and a support of a supplemental water supply valve of a boiler having an air gap forming unit according to a first embodiment of the present invention;

FIG. 6 is a cross-sectional view illustrating an opening and closing opening of a supplemental water supply valve of a boiler having an air gap forming unit according to a second embodiment of the present invention;

7 is a view conceptually illustrating a coupling relationship between a main body of a supplementary water supply valve and an operating knob of an boiler having an air gap forming unit according to a second embodiment of the present invention;

8 is a cross-sectional view showing a closed state of the opening and closing of the supplementary water supply valve of the boiler having an air gap forming means according to a second embodiment of the present invention,

9 is a cross-sectional view showing a state in which the opening and closing port of the supplementary water supply valve of the boiler having the air gap forming means according to the third embodiment of the present invention is open;

10 is a cross-sectional view showing a closed state of the opening and closing of the supplemental water supply valve of the boiler having an air gap forming means according to a third embodiment of the present invention,

11 is a perspective view showing an appearance of a supplemental water supply valve of a boiler having an air gap forming unit according to a fourth embodiment of the present invention;

12 is a cross-sectional view showing a state in which the drain operation valve of the supplementary water supply valve of the boiler having the air gap forming unit according to the fourth embodiment of the present invention is closed.

FIG. 13 is a sectional view showing an open state of a drain operation valve of a supplemental water supply valve of a boiler having an air gap forming unit according to a fourth embodiment of the present invention.

14 is a circuit diagram of a conventional general heating boiler.

Hereinafter, with reference to the accompanying drawings will be described in detail the configuration of the supplementary water supply valve of the boiler having an air gap forming means according to an embodiment of the present invention.

1 is a perspective view showing an appearance of a supplementary water supply valve of a boiler having an air gap forming means according to a first embodiment of the present invention, and FIG. 2 is an air gap forming means according to a first embodiment of the present invention. 3 is a cross-sectional view illustrating a state in which an opening and closing opening of a supplemental water supply valve of a boiler is opened, and FIG. 3 illustrates a state in which a opening and closing opening of a supplementary water supply valve of a boiler having an air gap forming unit according to a first embodiment of the present invention is closed. 4 is a perspective view illustrating a flow opening / closing valve and an air gap shutter of a replenishment water supply valve of a boiler having an air gap forming unit according to a first embodiment of the present invention, and FIG. 1 is a perspective view illustrating an exploded state of coupling between an operating knob of a supplemental water supply valve and a support of a boiler having an air gap forming unit according to a first embodiment.

As shown in Figures 1 to 5, the supplementary water supply valve of the boiler according to the first embodiment of the present invention is a main body 10 having a direct inlet 11, outlet 13 and the supplemental water supply port 12 And an air gap shutter and a first check valve 60 and a second check valve 65 which are installed inside the main body 10 to selectively open and close the opening / closing opening 16 and form an air gap. And an operating knob 40 for operating the flow path opening and closing valve 30.

The main body 10 has a pipe structure in which an empty space is formed therein, and on one side, a direct inlet 11 connected to a direct water pipe (not shown) is formed and the supplemental water supply port 12 connected to a heating water pipe (not shown) to the other side. ) Is formed and a discharge port 13 for discharging the replenishment water to the outside between the direct inlet 11 and the replenishment water supply port 12 is formed. At one side of the discharge port 13, an atmospheric exposure hole 14 opened to the atmosphere is formed, and the discharge hole 15 which connects the discharge hole 13 and the internal space of the main body 10 is formed above the discharge hole 13. . Inside the main body 10 is formed an opening and closing 16 is opened or closed by the flow path opening and closing valve 30 to be described later to selectively allow / block the supply of water. The inner side of the main body 10 is formed with a disk support portion 17 to which the check valve is mounted while allowing the replenishment water to communicate, the disk support portion 17 is in communication with the insertion hole 18 to slide the disk's extension shaft It has a communication hole 19 for.

The support 20 which supports the flow path opening and closing valve 30 is coupled to the left end of the main body 10 while maintaining the airtightness of the main body 10. The support 20 has a structure through which the center thereof is penetrated, and an opening / closing valve 30 is installed in the penetrated inner side, and an O-ring 22 is formed on the outer side of the support 20 to maintain airtightness. The left end of the support 20 is formed with a sliding portion 25 of an inclined structure gradually increasing in height along the circumference.

Flow passage opening and closing valve 30 is for opening and closing the opening and closing port 16 of the main body is slidably installed inside the support 20 and the rear end is coupled to the operating knob 40. The flow path opening and closing valve 30 is provided with an O-ring 31 on the outer circumference for maintaining airtightness with the support 20. The flow path opening / closing valve 30 has an expansion portion 33 having an increased diameter at the front end thereof, and a front surface of the expansion portion 33 has a tapered cone-shaped blocking surface 34. The blocking surface 34 is provided with an O-ring 35 to maintain airtightness when it is in close contact with the opening and closing port 16. A spring 39 is provided between the expansion part 33 of the flow path opening and closing valve 30 and the support 20 so that the flow path opening and closing valve 30 is always pressed toward the opening and closing port 16.

The operation knob 40 is coupled to one end of the flow path opening / closing valve 30 through the fixing piece 42, and a sliding part 45 having a circumferentially inclined structure is formed on the inner side thereof. The sliding portion 45 of the operating knob 40 performs a sliding operation with the sliding portion 25 of the support 20 to convert a rotational force acting on the operating knob 40 into a linear motion. In the absence of external force, the actuating knob 40 has a sliding portion 45 of the actuating knob 40 descending on the sliding portion 25 of the support 20 by the force of the spring 39 to the main body 10. In close contact with the opening / closing valve 30, the opening / closing port 16 is closed, and when the operating knob 40 is rotated by applying an external force, the sliding part 45 of the operating knob 40 is the sliding part 25 of the support 20. While operating up the operation knob 40 is far from the main body 10 and the flow path opening and closing valve 30 is to open and close the opening (16).

The air gap shutter 50 is to form an air gap by selectively opening and closing the discharge hole 15 of the main body 10 and integrally formed through the expansion part 33 and the shutter connection part 37 of the flow path opening / closing valve 30. Is connected. The air gap shutter 50 has a circumferential surface that corresponds to the shape of the inner space of the main body 10 as a cylindrical structure, and a communication passage 55 for supplying supplemental water is formed inward from the circumferential surface. On the outer circumferential surface of the air gap shutter 50, a pair of O-

rings

52 and 53 spaced apart from each other are provided to closely contact the inner surface of the main body 10. Therefore, the supplemental water introduced into the main body 10 cannot move toward the circumferential surface of the air gap shutter 50, but passes through the air gap shutter 50 only through the communication flow path 55 of the air gap shutter 50 to the opposite side. I can move it. The pair of O-

rings

52 and 53 of the air gap shutter 50 has the O-

rings

52 and 53 when the flow opening / closing valve 30 opens and closes the opening 16. It is formed to have an appropriate interval to block both sides of the).

The first check valve 60 and the second check valve 65 are formed on the right side of the air gap shutter 50. The first check valve 60 is a first disk 62 and a spring 63 for elastically supporting the first disk 62 and the first disk 62, which are in close contact with the first seat 61 and the first seat 61. It is composed. The second check valve 65 is pressed against the second seat 66 and the second seat 66 by pressing the second disk 67 and the second disk 67 which block the flow path by the second seat 66. It is composed of a spring (68). The second disk 67 and the spring 68 of the second check valve 65 are supported by the insertion hole 18 of the disk support 17.

Hereinafter will be described the operation of the replenishment water supply valve according to the first embodiment of the present invention.

First, the case of supplying supplemental water will be described. When the operating knob 40 is rotated, the sliding portion 25 of the operating knob 40 rises up the sliding portion 25 of the support 20 so that the operating knob 40 is pushed to the left side of FIG. 2. At this time, the opening / closing opening 16 is opened while the flow opening / closing valve 30 connected to the operation knob 40 is opened to the left, and the air gap shutter 50 connected to the right end of the flow opening / closing valve 30 through the shutter connection 37. The pair of O-

rings

52 and 53 of the air gap shutter 50 are positioned at both sides of the discharge hole 15 of the main body 10 so as to move to the left side together with the flow channel opening / closing valve 30. 15) is isolated from the internal space of the main body 10.

In the state in which the opening and closing port 16 is opened, the direct water flowing into the main body 10 through the direct opening inlet 11 passes through the opening and closing port 16, and then passes through the communication passage 55 of the air gap shutter 50. The valve 60 and the second check valve 65 are supplied to the heating water pipe (not shown) through the supplemental water supply port 12.

When supply of the supplementary water to the heating water pipe is completed and the external force is removed from the operating knob 40, the flow path opening / closing valve 30 moves to the right by the force of the spring 39 to close the opening / closing opening 16 and open and close the flow path. The operating knob 40 coupled to the valve 30 also moves to the right while rotating. The air gap shutter 50 also moves to the right side along with the flow path opening / closing valve 30, and the pair of O-

rings

52 and 53 leave the discharge hole 15 and the discharge hole 15 is an internal space of the main body 10. Connected with Since the opening and closing port 16 is blocked by the flow path opening and closing valve 30 and water does not move, the first check valve 60 and the second check valve 65 are also in a closed state. At this time, since the internal space between the first check valve 60 and the opening / closing opening 16 of the main body 10 is connected to the outside air through the discharge hole 15 and the atmospheric exposure hole 14, the first check valve ( An air gap is formed between the opening 60 and the opening 16. That is, when the user releases the operating knob 40, the operating knob 40 is automatically returned to its original position by the force of the spring 39, and the opening / closing opening 16 is closed and an air gap is formed inside the supplemental water supply valve. will be.

If the heating water flows back from the heating water pipe, the first check valve 60 and the second check valve 65 block the back flow of the heating water, or the first check valve 60. When the second check valve 65 is damaged or fails to function, and the heating water flows back through the first check valve 60 and the second check valve 65, the flow path opening / closing valve 30 is opened or closed. Since the air gap is formed on the right side of the opening / closing opening 16 and the first check valve 60 is blocked, the heating water flowing back to the outlet 16 is discharged to the outside. Therefore, the heating water does not occur flowing through the opening and closing port 16 to the direct inlet 11.

When the O-

rings

52 and 53 of the air gap shutter 50 respectively block both sides of the discharge hole 15, an air gap is not formed inside the supplemental water supply valve, and the air gap shutter 50 is formed. O-rings (52, 53) of the outside of the discharge hole 15, the state in which the discharge hole 15 is connected to the internal space of the body 10 is referred to as the air gap formed state.

In the supplementary water supply valve according to the present embodiment, the shutoff surface 34 of the flow path opening / closing valve 30 is formed inside the main body 10 even when the valve (not shown) of the straight water pipe is opened so that the water pressure of the straight water is strong. Since opening and closing the opening 16 to the right side of the pressure does not occur no matter how the opening and closing opening 16. Therefore, even when the water valve is accidentally opened, the water flowing into the body does not leak out through the discharge hole 15.

Hereinafter, a configuration of a supplemental water supply valve of a boiler having an air gap forming unit according to a second embodiment of the present invention will be described.

FIG. 6 is a cross-sectional view illustrating an opening and closing opening of a supplemental water supply valve of a boiler having an air gap forming unit according to a second embodiment of the present invention, and FIG. 7 is an air gap according to a second embodiment of the present invention. A conceptual diagram illustrating a coupling relationship between a main body of a supplementary water supply valve and an operating knob of a boiler having a forming means, and FIG. 8 is a supplemental water of a boiler having an air gap forming means according to a second embodiment of the present invention. It is sectional drawing which shows the state of opening and closing of a supply valve.

As shown in Figure 6 to 8, the supplementary water supply valve according to the second embodiment of the present invention is installed in the body 110 and the body 110, the direct inlet 111 and the supplemental water supply port is formed It is configured to include a flow path opening and closing valve 130 and the air gap shutter 150 and the check valve 160.

The main body 110 has a direct water inlet 111 connected to the direct water pipe and receives the direct water supply and a supplemental water supply port 112 for supplying the supplemental water to the heating water pipe. Opening and closing port 116 is formed for the internal space from the direct inlet 111 to the supplemental water supply port 112 is connected. The opening and closing port 116 has a surface inclined to the right side. At one point of the body 110, a discharge port 113 for discharging the replenishment water to the outside is formed if necessary. At one side of the discharge port 113, an air communication hole 114 opened to the atmosphere is formed, and the discharge hole connecting the space inside the discharge port 113 and the internal space of the main body 110 to the upper side of the discharge port 113 ( 115) is formed. The outlet 113 may be closed with a stopper if necessary. The inner side of the main body 110 is provided with a disk support 117 for installing the check valve 160 at the same time to allow the water to communicate with the disk support 117 to allow the disk 162 to advance and retreat. The insertion hole 118 is provided with a communication hole 119 for communicating water. On the outer circumferential surface of the left end of the main body 110 is formed a locking projection 109 for the advancing operation of the operation knob 140 to be described later.

The flow path opening and closing valve 130 is installed at one end of the main body 110, and an expansion part 133 having a blocking surface 134 for opening and closing the opening and closing opening 116 of the main body 110 is formed on the right side and the flow path opening and closing valve is formed. The left end of the 130 is coupled to the operation knob 140 to be described later, and the right side of the extension 133 is connected to the air gap shutter 150 for selectively opening and closing the discharge hole 115 of the main body 110 do. The blocking surface 134 and the air gap shutter 150 are located at the right side of the opening and closing opening 116 based on the opening and closing opening 116 of the main body 110.

In the air gap shutter 150, a pair of O-rings 152 and 123 are disposed on the circumferential surface at intervals as in the first embodiment, and a communication passage 155 is formed inside the circumferential surface. A spring 139 is installed on the right side of the air gap shutter 150, and the right end of the spring 139 is in close contact with the seat 161 of the check valve 160. The left end of the spring 139 is an air gap. In close contact with the shutter 150, the air gap shutter 150 and the flow path opening / closing valve 130 are pressed to the left by the spring 139.

The operating knob 140 is fixedly coupled to the flow path opening / closing valve 130 and has a spiral protrusion 142 that is caught on the locking protrusion 109 of the body 110 described above and climbs up the locking protrusion 109. . The operating knob 140 surrounds the locking protrusion 109 outside the main body 110 from the outside, and the spiral protrusion 142 of the operating knob 140 is caught by the locking protrusion 109 so that the operating knob 140 is the main body 110. It has a structure that does not deviate from.

Check valve 160 is composed of a seat portion 161 and the disk 162 and the spring 163 for elastically supporting the disk 162, the extension shaft of the disk 162 is the disk support portion (inside of the body 110) Positioned to be inserted into the insertion hole 118 of the 117 is supported by the spring 163 and the seat portion 161 is fixed to the left side of the disk 162 is installed.

Hereinafter will be described the operation of the replenishment water supply valve according to a second embodiment of the present invention.

When the user rotates the operating knob 140 while winning the force of the spring 139, the operating knob 140 is rotated while the spiral protrusion 143 ascends the engaging protrusion 109 while the operating knob 140 rotates. As the flow path opening and closing valve 130 connected to the operation knob 140 moves to the right side, the blocking surface 134 of the expansion unit 133 falls from the opening and closing port 116 to open and close the opening and closing port 116.

When the flow path opening / closing valve 130 moves to the right side, the air gap shutter 150 coupled to the flow opening / closing valve 130 also moves to the right side, so that the pair of O-

rings

152 and 153 are discharge holes of the body 110. Seal 115) on both sides. Therefore, the discharge hole 115 is completely blocked from the internal space of the main body 110 by the circumferential surface of the air gap shutter 150 and the O-

rings

152 and 153.

Since the opening and closing port 116 is open, the water flowing in from the direct inlet 111 passes through the communication channel 155 of the air gap shutter 150 after the opening and closing port 116, and then the disk 162 of the check valve 160. After moving to the right to move through the communication hole 119 of the disk support 117 is supplied to the supplemental water supply port 112 is finally supplied to the heating water pipe.

When the supply of the replenishment water is completed and the user releases his hand from the operating knob 140, the operating knob 140 rotates by the force of the spring 139 that is pressing the air gap shutter 150 while the air gap shutter 150 rotates. ) And the flow path opening and closing valve 130 and the operation knob 140 all move to the left. At this time, while the blocking surface 134 provided with the O-ring 135 of the flow path opening / closing valve 130 blocks the inclined surface of the opening / closing port 116, the flow path through which the replenishing water moves is blocked. When the flow opening / closing valve 130 moves to the left side, the air gap shutter 150 also moves to the left side, and the pair of O-

rings

152 and 153 also move to the left side of the discharge hole 115 to discharge the discharge hole 115. Is connected to the inner space of the right side of the opening and closing port 116 of the main body 110. The discharge hole 115 is connected to the inner space of the main body 110 on the right side of the opening and closing port 116, the air gap is formed to the right of the opening and closing port 116. Therefore, even though the heating water flows back from the heating water pipe and passes through the check valve 160, the heating water beyond the check valve 160 is discharged to the outside through the discharge hole 115, and thus does not pass through the opening and closing port 116. It does not flow into the straight pipe.

Hereinafter, a configuration of a supplemental water supply valve of a boiler having an air gap forming unit according to a third embodiment of the present invention will be described.

9 is a cross-sectional view showing an open and closed state of a refill water supply valve of a boiler having an air gap forming means according to a third embodiment of the present invention, and FIG. 10 is an air gap according to a third embodiment of the present invention. It is sectional drawing which shows the state which the opening and closing of the supplemental water supply valve of the boiler provided with the formation means was closed.

9 and 10, the supplementary water supply valve according to the third embodiment of the present invention is installed in the main body 210 and the main body 210 in which the direct inlet 211 and the supplemental water supply port are formed. The flow path opening and closing valve 230 and the air gap shutter 250 and the check valve 260 is configured to include.

The main body 210 has a direct water inlet 211 connected with a direct water pipe and receives a direct water supply, and a supplemental water supply port 212 for supplying supplemental water to a heating water pipe. Opening and closing port 216 is formed and the inner space is connected from the direct inlet 211 to the supplemental water supply port (212). The opening and closing port 216 has a surface inclined to the right side. At one point of the main body 210, a discharge port 213 for discharging the replenishment water to the outside is formed if necessary. One side of the discharge port 213 is formed with an air communication hole 214 opened to the atmosphere and the discharge hole for connecting the space inside the discharge port 213 and the internal space of the main body 210 above the discharge port 213 ( 215 is formed. The inner side of the body 210 is provided for the check valve 260 is installed at the same time the disk support portion 217 to allow the water to communicate with the disc support portion 217 so that the disk 262 can advance and retreat. The insertion hole 218 is provided with a communication hole 219 for communicating water.

One end of the main body 210 is coupled to a support 220 that functions to support the flow path opening and closing valve 230 and maintains the airtightness of one end of the main body 210. The support 220 has a structure that penetrates inside, and the flow path opening and closing valve 230 slides inwardly. The outer periphery of the left end of the support 220 is formed with a locking projection 225 for the forward and backward operation of the operation knob 240 to be described later.

Flow opening and closing valve 230 is installed on the support 220 of the main body 210 and the expansion portion 233 having a blocking surface 234 for opening and closing the opening and closing 216 of the main body 210 is formed at the right end O-ring 235 is installed on the blocking surface 234, the left end of the flow path opening and closing valve 230 is coupled to the operation knob 240 to be described later, the discharge of the main body 210 to the left of the expansion portion 233 An air gap shutter 250 for selectively opening and closing the ball 215 is coupled. The blocking surface 234 is located at the right side of the opening and closing hole 216 and the air gap shutter 250 is located at the left side of the opening and closing hole 216, based on the opening and closing hole 216 of the main body 210.

The air gap shutter 250 is provided with a pair of O-

rings

252 and 253 spaced apart from each other on the circumferential surface of the air gap shutter 250 and a communication passage 255 is formed therein. The inside of the main body 210 is provided with a spring 239 to the right of the expansion portion 233 of the flow path opening and closing valve 230, the spring 239 is the right end and the left end of the seat portion of the check valve 260, respectively 261 and the expansion part 233 of the flow path open / close valve 230 pressurize the flow path open / close valve 230 to the left.

The operating knob 240 is fixedly coupled to the flow path opening / closing valve 230 and has a spiral protrusion 245 which is caught on the locking protrusion 225 of the above-described supporter 220 and climbs up the locking protrusion 225. . The operating knob 240 surrounds the locking protrusion 225 outside the support 220 from the outside and the spiral protrusion 245 of the operating knob 240 is caught by the locking protrusion 225 so that the operating knob 240 is the support 220. It has a structure that does not deviate from. The spiral protrusion 245 of the operating knob 240 of the present embodiment and the locking protrusion 225 of the support 220 have the spiral protrusion 142 and the main body 110 of the operating knob 140 of the second embodiment. It is almost similar to the structure of the locking projections (109).

The check valve 260 is composed of a seat portion 261, a disk 262 and a spring 263 for elastically supporting the disk 262, the guide shaft of the disk 262 is the disk support (inside the body 210) ( Positioned to be inserted into the insertion hole 218 of the 217 is supported by the spring 263 and the seat portion 261 to the left of the disk 262 is fixed to the main body 210 is installed.

Hereinafter will be described the operation of the supplementary water supply valve of the boiler according to the third embodiment of the present invention.

When the user rotates the operating knob 240 while winning the force of the spring, while the operating knob 240 rotates, the spiral protrusion 245 of the operating knob 240 rises up the locking protrusion 225 of the support 220. As the operating knob 240 moves to the right side and the flow path opening / closing valve 230 connected to the operating knob 240 moves to the right side, the blocking surface 234 of the expansion part 233 falls from the opening / closing opening 216 and the opening / closing opening 216 ) Is opened.

When the flow path opening / closing valve 230 moves to the right, the air gap shutter 250 coupled to the flow path opening / closing valve 230 is also integrally moved to the right, and the pair of O-

rings

252 and 253 of the air gap shutter 250 are moved. The discharge hole 215 of the main body 210 is sealed at both sides. Therefore, the discharge hole 215 is completely blocked from other spaces inside the main body 210 by the circumferential surface of the air gap shutter 250 and the o-

rings

252 and 253.

Since the opening and closing port 216 is in an open state, the direct water flowing from the direct inlet 211 passes through the communication flow path 255 of the air gap shutter 250 and moves to the opening and closing port 216, and then passes through the opening and closing port 216 and check valve ( The disk 262 of the 260 is pushed to the right to secure a flow path, passes through the check valve 260, passes through the communication hole 219 of the disk support 217, and is supplied to the replenishment water supply port 212 and finally heated. It is supplied to the water pipe.

When the supply of the replenishment water is completed and the user releases the hand from the operating knob 240, the operating knob 240 is pushed to the left by the force of the spring 239 that was pressurizing the flow opening / closing valve 230, and the opening / closing valve 230 also moves to the left. While the blocking surface 234 provided with the O-ring 235 of the flow path opening and closing valve 230 blocks the inclined surface of the opening and closing port 216, the flow path for direct water movement is blocked. When the flow opening / closing valve 230 moves to the left side, the air gap shutter 250 also moves to the left side, and the pair of O-

rings

252 and 253 also move to the left side of the discharge hole 215 to discharge the discharge hole 215. Is connected to the inner space on the left side of the opening and closing port 216 of the main body 210. As the discharge hole 215 is connected to the inner space of the left side of the opening and closing hole 216, an air gap is formed at the left side of the opening and closing hole 216. Therefore, even if the heating water passes through the check valve 260 and the opening / closing valve 230 of the opening / closing opening 216 in the heating water pipe, the heating water beyond the opening and closing opening 216 is discharged to the outside through the discharge hole 215. As it exits, it does not flow into the straight pipe.

In the refill water supply valve of the above embodiments, an operation knob fixing means (not shown) may be formed between the operation knob and the main body to rotate the operation knob to supply the replenishment water. have. The actuating knob fixing means may include, for example, a structure in which holes are coupled to the actuating knob and the main body, and a pin is coupled to the holes to fix the actuating knob to the main body.

The main body used in the supplemental water supply valve of the above embodiments has a structure in which two parts are combined to facilitate installation of internal parts.

11 is a perspective view showing the appearance of a supplementary water supply valve of a boiler having an air gap forming means according to a fourth embodiment of the present invention, and FIG. 12 is an air gap forming means according to a fourth embodiment of the present invention. 13 is a cross-sectional view illustrating a state in which a drain operation valve of a supplementary water supply valve of a boiler is closed, and FIG. 13 is a drain operation valve of a supplementary water supply valve of a boiler having an air gap forming unit according to a fourth embodiment of the present invention. It is sectional drawing which shows the state which opened.

As shown in Figure 11 to Figure 13, the supplementary water supply valve of the boiler according to the fourth embodiment of the present invention is the main body 310, the direct inlet inlet 311 and outlet 313 and the supplemental water supply port 312 is formed And an air gap shutter and a first check valve 360 and a second check valve 365 that are installed inside the main body 310 to selectively open and close the opening and closing port 316, and to form an air gap. And an operation knob 340 for operating the flow path opening and closing valve 330.

The main body 310 is a pipe structure in which an empty space is formed therein, and a water supply inlet 311 is formed at one side connected to a direct water pipe (not shown), and the supplemental water supply port 312 connected to the heating water pipe (not shown) at the other side. ) Is formed and a discharge port 313 for discharging the replenishment water to the outside between the direct water inlet 311 and the replenishment water supply port 312 is formed. At one side of the outlet 313 is formed an atmospheric exposure hole 314 opened to the atmosphere and the discharge hole 315 is formed above the outlet 313 to connect the outlet 313 and the internal space of the main body 310. . An opening or closing hole 316 that is opened or closed by a flow path opening / closing valve 330 to be described later is formed in the body 310 to selectively allow / block supply of water. The inner side of the main body 310 is formed with a disk support 317 to which the check valve is mounted while allowing the replenishment water to communicate, and the disk support 317 communicates with the insertion hole 318 for sliding the extended shaft of the disk. It is provided with a communication hole (319).

A support 320 supporting the flow path opening / closing valve 330 is coupled to the left end of the main body 310 while maintaining the airtightness of the main body 310. The support 320 has a center-penetrated structure, and a flow path opening and closing valve 330 is installed in the penetrated inner side, and an O-ring 322 is formed on the outer side of the support 320 to maintain airtightness. The left end of the support 320 is formed with a sliding portion 325 of an inclined structure gradually increasing in height along the circumference.

Flow opening and closing valve 330 is to open and close the opening and closing port 316 of the main body is slidably installed inside the support 320 and the rear end is coupled to the operation knob 340. The flow path opening and closing valve 330 is provided with an O-ring 331 on the outer circumference for maintaining airtightness with the support 320. The flow path opening and closing valve 330 is formed with an expansion portion 333 having an increased diameter at the front end thereof, and a front surface of the expansion portion 333 has a tapered cone-shaped blocking surface 334. The blocking surface 334 is provided with an O-ring 335 can be kept airtight when in close contact with the opening and closing port 316. A spring 339 is provided between the expansion part 333 of the flow path opening and closing valve 330 and the support 320 so that the flow path opening and closing valve 330 is always pressurized toward the opening and closing port 316.

The operation knob 340 is coupled to one end of the flow path opening / closing valve 330 through the fixing piece 342, and a sliding part 345 having a circumferentially inclined structure is formed at an inner side thereof. The sliding portion 345 of the operating knob 340 performs a sliding operation with the sliding portion 325 of the support 320 to convert a rotational force acting on the operating knob 340 into a linear motion. In the absence of external force, the actuating knob 340 is driven by the force of the spring 339 and the sliding portion 345 of the actuating knob 340 descends the sliding portion 325 of the support 320 to the main body 310. In close contact with the opening / closing valve 330, the opening and closing valve 330 is closed, and when the operating knob 340 is rotated by applying an external force, the sliding part 345 of the operating knob 340 is the sliding part 325 of the support 320. The operation knob 340 moves away from the main body 310 while the up and down flow opening and closing valve 330 opens the opening and closing port 316.

The air gap shutter 350 is for forming an air gap by selectively opening and closing the discharge hole 315 of the main body 310 and integrally formed through the expansion part 333 and the shutter connection part 337 of the flow opening / closing valve 330. Is connected. The air gap shutter 350 has a cylindrical structure and has a circumferential surface corresponding to the shape of the internal space of the main body 310, and a communication passage 355 is formed to supply the replenishment water inward from the circumferential surface. On the outer circumferential surface of the air gap shutter 350, a pair of O-

rings

352 and 53 spaced apart from each other are provided to closely contact the inner surface of the main body 310. Therefore, the supplemental water introduced into the main body 310 cannot move toward the circumferential surface of the air gap shutter 350, but passes through the air gap shutter 350 only through the communication passage 355 of the air gap shutter 350 to the opposite side. I can move it. The pair of O-

rings

352 and 53 of the air gap shutter 350 have the O-

rings

352 and 53 when the flow opening / closing valve 330 opens and closes the opening 316. It is formed to have an appropriate interval to block both sides of the).

The first check valve 360 and the second check valve 365 are formed on the right side of the air gap shutter 350. The first check valve 360 is a spring 363 that elastically supports the first disk 362 and the first disk 362 which are in close contact with the first seat 361 and the first seat 361 to block the flow path. It is composed. The second check valve 365 is pressed against the second seat 366 and the second seat 366 by pressing the second disk 367 and the second disk 367 to close the flow path by the second seat 366. It is composed of a spring (368). The second disk 367 and the spring 368 of the second check valve 365 are supported by the insertion hole 318 of the disk support 317.

The heating water drain 370 is formed on the right side of the second check valve 365. The heating water drain 370 is used to discharge the heating water filled in the heating pipe of the heating system to the outside in order to repair or replace the heating system.

The heating water drain part 370 has a space formed inside, and a drain port 371 is formed to connect the space of the heating water drain part 370 to the outside, and a drain operation is performed on the right side of the heating water drain part 370. The valve connection part 372 is formed and the drain operation valve 380 is screwed to the drain operation valve connection part 372. The drain operation valve connecting portion 372 has a female thread 374 formed at one inner side thereof. The space of the heating water drain 370 is connected to the space below the supplemental water supply port 312 through the drain outlet 373.

The drain actuating valve 380 is formed at one end thereof with a soft sealing packing portion 381 for sealing the drain outlet 371, and a male screw 382 is formed at the outer periphery thereof, An o-ring 383 is installed to prevent leakage between the drain actuation valve connection 372. A contact portion 384 for contacting the set screw 377 is formed on the right side of the O-ring 383 of the drain operation valve 380. At the right end of the drain operation valve 380, a rotary knob 385 having a plurality of protrusions is formed. A fixing screw 377 is coupled to a fixing screw coupling hole 376 at which a female screw is formed at a point adjacent to an end of the drain operation valve connecting portion 372. When the lower end of the fixing screw 377 is in close contact with the contact portion 384 of the drain operation valve 380 by tightening the fixing screw 377, the rotation of the drain operation valve 380 is prevented.

An operation process of supplying supplemental water through the supplementary water supply valve according to the fourth embodiment of the present invention is the same as the operation process of the supplementary water supply valve according to the first embodiment of the present invention, and thus description thereof is omitted.

Hereinafter, a process of draining the heating water through the supplemental water supply valve according to the fourth embodiment of the present invention will be described.

Usually, the sealed packing part 381 of the drain operation valve 380 blocks the drain outlet 373. Therefore, the space below the make-up water supply port 312 and the internal space of the drain port 371 are blocked from each other.

In the case of discharging the heating water to the outside, the rotary knob 385 is turned to move the drain operation valve 380 to the right. When the drain operation valve 380 is moved to the right, the drain outlet 371 is opened while the sealed packing part 381 which has blocked the drain outlet 371 moves to the right. Accordingly, the inner space of the supplemental water supply port 312 is connected to the internal space of the drain port 371, and the heating water flows in through the supplemental water supply port 312 connected to the heating pipe and passes through the drain outlet 373. It is discharged to the outside through the drain port 371.

When the heating water is again filled with the heating pipe, the drain operation valve 380 is moved to close the drain outlet 373, and then supplement water is supplied again to fill the heating pipe with the heating water.

The present invention relates to a replenishment water supply valve of a boiler having an air gap forming means, and is used when filling or replenishing heating water.

Claims

A main body having a direct water inlet and a supplemental water supply port formed therein and having an opening and closing hole formed at one point on a flow path connecting the direct water inlet and the supplemental water supply port and having an outlet hole connected to the outside air at one side thereof;

A flow path opening and closing valve installed inside the main body to selectively open and close the opening and closing port;

An air gap forming unit coupled to the flow path opening / closing valve and having a communication flow path formed therein to selectively open and close the discharge hole of the main body;

A check valve provided on the flow path between the direct inlet of the main body and the replenishment inlet; And

An operation knob coupled to the flow path open / close valve to move the flow path open / close valve forward or backward,

The air gap forming portion blocks the discharge hole of the main body when the flow path opening / closing valve opens the opening, and the air gap forming portion closes the discharge hole of the main body when the flow opening / closing valve closes the opening / closing opening. Supplementary water supply valve of the boiler, characterized in that for opening.
The method of claim 1,

The flow path opening and closing valve is formed with a pair of O-rings spaced apart from each other,

The supplemental water supply valve of the boiler, characterized in that the O-rings of the flow path opening and closing valve opens or closes the discharge hole of the main body.
The method of claim 1,

A spring is further provided to press the flow path opening and closing valve so that the flow path opening and closing valve closes the opening and closing opening,

When the external force is removed from the operating knob after the rotation of the operating knob, the operating knob is returned to its original position by the spring for pressing the flow path opening and closing valve of the boiler.
The method of claim 1,

The flow path opening and closing valve is a supplementary water supply valve of the boiler, characterized in that installed to block the opening and closing inlet in the direction.
The method of claim 1,

The flow path opening and closing valve is a supplementary water supply valve of the boiler, characterized in that installed to block the opening and closing in the direction opposite to the direction in which water is introduced.
The method of claim 1,

Further comprising a heating water drain connected to the internal space of the supplemental water supply port for discharging the heating water to the outside,

The heating water drain portion,

A drain port having a space open to the outside for discharging the heating water to the outside;

A drain outlet for connecting a space inside the supplementary water supply port of the main body and a space of the drain port opened to the outside;

A supplementary water supply valve of a boiler, characterized in that it comprises a drain operation valve which is installed to be movable in the internal space of the drain portion and formed with a sealed packing for closing the outlet for the drain.