KR0124929B1 - Heat pipe bluing apparatus of gas-boiler and its method - Google Patents

Abstract

For a pipe cleaning, a pipe cleaning switch(27) is turned on. Then using a 3-way value(18) a heating water supply line(5) is closed. And a supplementary valve placed on the water supplementary line which is between a direct water supply line(6) and the heating water supply line is opened, then the direct water is supplied to the heating line. And an over pressure safety valve(23) is manually opened and after discharging the heating water and direct water, an intermediate valve(26) is blocked or closed. Thus the heating line of a desired room makes the direct water discharge thru the high pressure safety valve(23) and cleans up the foreign material within the heating water line. After sufficient hours of cleaning, the intermediate valve is closed and other valves are restored to the original state.

Description

Heating pipe cleaning device and method of gas boiler

1 is a configuration diagram of a conventional gas boiler.

2 is a configuration diagram of a gas boiler configured with a heating pipe cleaning device of the present invention.

3 is a flowchart for carrying out the heating pipe cleaning method of the present invention.

* Description of the symbols for the main parts of the drawings *

1: gas supply pipe 2: burner

3: heat exchanger 4: heating return pipe

5: heating water supply pipe 6: direct water supply pipe

7: hot water supply pipe 8: combustion chamber

9,19: three-way valve 10: flow valve

11,21: water supplement pipe 12,22: supplement water valve

13,23: overpressure safety valve 14: circulation pump

15: expansion tank 16, 26: intermediate valve

27: pipe cleaning switch 28, 29: on-off valve

The present invention relates to an apparatus and a method for cleaning a heating pipe installed in each room connected to a gas boiler, and more particularly, a heating pipe which can be easily cleaned using water pressure of tap water without disassembling the heating pipe. A cleaning apparatus and a method thereof.

In general, the gas boiler, as shown in FIG. 1, when gas is supplied to the burner 2 through the gas supply pipe 1, the gas boiler burns it in the burner 2 and the heat exchanger 3 through the combustion chamber 8. Heating and circulating the heating pipe of each room is returned to the heat exchanger (3) through the heating return pipe (4) is heated and then supplied back to the heating pipe of each room through the heating water supply pipe (5). have. On the other hand, when hot water is used, the direct water supplied to the heat exchanger 3 through the direct water supply pipe 6 is heated by receiving heat transfer from the heating water in the heat exchanger 3 and then supplied to the user through the hot water supply pipe 7.

In order to increase the heating efficiency of the direct water when using hot water, the heating water is circulated only in the boiler. For this purpose, a three-way valve 9 is installed between the heating return pipe 4 and the heating water supply pipe 5, and the direct water supply pipe The flow valve 10 is provided on (6). When hot water is used, direct water flows through the direct water supply pipe (6), so it is sensed by the flow valve (10) and sends an electrical signal to the three way valve (9). Opening the passage of the return pipe 4, the heating water enters the heat exchanger 3 directly through the heating return pipe 4 without passing through the heating pipe of each room. Therefore, since the heating water does not lose heat, the direct water can be efficiently heated. When the hot water is not used, the three-way valve 9 blocks the passage of the heating return pipe 4 and blocks the passage of the heating water supply pipe 5 so that the heating water circulates the heating pipe of each room.

In addition, a water supplement pipe 11 is connected between the direct water supply pipe 6 and the heating return pipe 4, and a supplemental water valve 12 is installed on the water supplement pipe 11. When it is to supplement.

And the overpressure safety valve 13 is installed on the heating return pipe (4), which is to discharge a certain amount of water automatically when the pressure in the heating pipe is above a certain level. Reference numeral 14 is a circulation pump, and 15 is an expansion tank.

In the conventional gas boiler configured as described above, the heating return pipe (4) and the heating water supply pipe (5) are connected to the heating pipes in each room. In order to save energy, an intermediate valve (16) is provided on the return pipe of each room pipe. ) Is installed so that the intermediate valve 16 is shut off for the room that does not require heating.

Conventional gas boilers configured as described above should be regularly cleaned of the heating pipe of each room in order to improve the heating circulation and improve the heating performance, and also to prevent damage to the boiler parts due to foreign objects.

However, in the conventional heating pipe cleaning method, after disassembling the heating pipe and the boiler in each room, the pressure pipe or the water must be connected to the heating pipe in each room to clean by water pressure. There was a problem in that labor costs are required because the professional should clean.

The present invention has been made to solve the above-described problem of the heating pipe cleaning method of the conventional gas boiler, and provides a device and a method which can simply clean the heating pipe using the water pressure of the direct water without disassembling the heating pipe. The purpose is to.

Heating pipe cleaning device of the present invention for achieving the above object is a conventional three-way valve (9), over-pressure safety valve 13 and the intermediate valve 16 is used as it is, the water supplement pipe (11) direct water supply pipe ( 6) and the heating water supply pipe (5), and the pipe cleaning switch to connect the three-way valve (9) so that the three-way valve (9) blocks the passage of the heating water supply pipe (5) when cleaning the heating pipe The heating pipe cleaning method of the present invention first turns on the pipe cleaning switch so that the three-way valve (9) blocks the passage of the heating water supply pipe (5) and opens the supplemental water valve (12), and then the overpressure safety valve (13). It is characterized by performing the heating pipe cleaning of each room by pulling the handle of the direct water to circulate the heating pipe of each room to be discharged to the overpressure safety valve (13).

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

Heating pipe cleaning device of the gas boiler of the present invention is installed between the heating return pipe (4) and the heating water supply pipe (5) as shown in Figure 2, the heating water flowing out of the heat exchanger (3) heating water Three-way valve 19 to selectively change the flow path to flow to the supply pipe (5) or heating return pipe (4), piping cleaning switch (27) for supplying electricity to the three-way valve (19) when cleaning the pipe, heating return pipe (4), the overpressure seat (23), which can be opened manually, and a plurality of intermediate valves (26) respectively installed on the return pipe of each heating pipe, the direct water supply pipe (6) and the heating water supply pipe (5). It consists of a water supplement pipe 21 installed between, and a supplementary water valve 22 installed on the water supplement pipe 21.

The components of the present invention are not only concerned with heating pipe cleaning, but also perform conventional functions as they are. That is, the three-way valve 19 blocks the passage of the heating return pipe (4) when heating and opens the passage of the heating water supply pipe (5), and operates by receiving electrical signals from the flow valve (10) when using hot water. Open the passage on the side of the pipe (4) and block the passage on the side of the heating water supply pipe (5).

The overpressure safety valve 23 automatically discharges a part of the heating water when overpressure is applied to the heating pipe to prevent the pressure in the heating pipe from rising above a certain level, and the intermediate valves 26 are used to control the heating water in a room where no heating is required. Prevents circulation, and the water supplement pipe 21 and the supplementary water valve 22 replenish water when water is insufficient in the heating pipe.

The present invention is to partially change the configuration of the conventional gas boiler to clean the heating pipe without disassembling the heating pipe. That is, the connection of the water supplement pipe 21 between the direct water supply pipe 6 and the heating water supply pipe 5 and the installation of the pipe cleaning switch 27 are different from those of the conventional boiler.

Instead of the pipe cleaning switch 27 of the present invention, even if the on-off valve 28 is provided on the heating water supply pipe 5 between the three-way valve 19 and the connection portion of the water filling pipe 21, the same function can be achieved. Can be. In addition, when the heating line of the gas boiler is not the air blocking type of FIG. 2 or the air opening type, or even the air blocking type, between the three-way valve 19 and the overpressure safety valve 23 to further ensure the sealing performance of the boiler side heating pipe. The on-off valve 29 can be installed on the heating return pipe 4 of the.

In the heating pipe cleaning method of the present invention, as shown in the flowchart of FIG. 3, the pipe cleaning switch 27 is turned on to cause the three-way valve 19 to block the passage of the heating supply pipe 5 side, and the direct water supply pipe 6 and Opening the supplementary water valve 22 installed on the water supplement pipe (21) installed between the heating water supply pipe (5) to supply direct water to the heating pipe, by manually opening the overpressure safety valve (23) to the heating water and direct water Discharging the gas, cleaning the object in the heating pipe by shutting off or closing the intermediate valve 26 so that the water is discharged to the overpressure safety valve 23 through the heating pipe of the room to be cleaned. Afterwards, the intermediate valve 26 and the overpressure safety valve 23 are returned to their original positions, the supplementary water valve 22 is shut off, and the pipe cleaning switch 27 is turned off.

The intermediate valve 26 is preferably opened only in the room to be cleaned and the rest is closed to increase the water pressure to be cleaned. This is because the foreign body in the heating pipe can be efficiently discharged. The cleaning is performed sequentially by cleaning one of the herbs and then cleaning the other.

When on / off valves 28 and 29 are provided on the heating water supply pipe 5 and the heating return pipe 4, the on / off valves 28 and 29 are opened and closed instead of turning on and off the pipe cleaning switch 27. Let's do it. The cleaning of the heating pipe is performed by discharging dirty heating water and foreign substances in the heating pipe when the direct water is discharged through the heating pipe, and after the cleaning, the clean heating water is filled in the heating pipe.

Heating pipe cleaning apparatus and method according to the present invention does not need to disassemble and assemble the heating pipe, pipe cleaning switch 27, supplementary water valve (without the operation of connecting and disconnecting the pressurized pump or faucet and heating pipe) 22) Since the fresh water is performed only by operating the overpressure safety valve 23 and the intermediate valve 26, the cleaning work becomes simple, and even the non-expert can perform the cleaning work, thereby reducing labor costs.

Claims (4)

In the gas boiler, the heating water discharged from the heat exchanger (3) installed between the heating return pipe (4) and the heating water supply pipe (5) is selectively flowed to the heating water supply pipe (5) or the heating return pipe (4). Overpressure safety valve installed on the three-way valve 19 for changing the flow path, the pipe cleaning switch 27 for supplying electricity to the three-way valve 19 when the pipe is cleaned, and the heating return pipe 4 so as to be opened manually. (23), a plurality of intermediate valves 26 respectively installed on a plurality of pipes of each room heating pipe, a water supplement pipe 21 installed between the direct water supply pipe 6 and the heating water supply pipe 5, and a water supplement pipe 21 Heating pipe cleaning device for a gas boiler, characterized in that consisting of a supplementary water valve (22) installed on the). The method according to claim 1, wherein an on-off valve (28) is provided on the heating water supply pipe (5) between the three-way valve (19) and the connection portion of the water supplement pipe (21) instead of the pipe cleaning switch (27). Heating pipe cleaning device characterized in that. The heating pipe cleaning apparatus according to claim 1, further comprising an on-off valve (29) provided on the heating return pipe (4) between the three-way valve (19) and the overpressure safety valve (23). A method of cleaning a heating pipe of each room connected to a gas boiler, the method comprising: turning on a pipe cleaning switch (27) to cause a three-way valve (19) to block a passage of a heating water supply pipe (5); Supplying water directly to the heating pipe by opening a supplemental water valve 22 installed on the water supplement pipe 21 installed between the direct water supply pipe 6 and the heating water supply pipe 5; Manually opening the overpressure safety valve 23 to discharge heating water and direct water; Cleaning the foreign material in the heating pipe by blocking or closing the intermediate valve 26 to discharge the overpressure safety valve 23 through the heating pipe of the room to be cleaned by the direct water; And after the sufficient cleaning is performed, the intermediate valve 26 and the overpressure safety valve 23 are returned to their original positions, the supplementary water valve 22 is shut off, and the pipe cleaning switch 27 is turned off. Heating pipe cleaning method.