KR200152394Y1 - Pipe union structure of heat-exchanger - Google Patents

Abstract

The present invention relates to a gas boiler equipped with a heat exchanger for heating heating water and hot water, and more particularly, to simplify the assembly of the heat exchanger and to disassemble and clean it if necessary after the heat exchanger is manufactured. The present invention relates to a heating and hot water pipe coupling structure of a heat exchanger for a gas boiler, which prevents waste of resources caused by replacing the whole and thus reduces repair costs.

The heating and hot water pipe coupling structure of the present invention has a pair of upper and lower heating pipes (9a ') having one side end coupled to communicate with each other and a support ring (9a) formed along the circumferential surface adjacent to the open end of the opposite position, respectively. ; Upper and lower side panels 9b 'in close contact with the support ring 9a adjacent to the open end of the heating pipe 9a', welded along the circumferential surface of the pipe, and having a plurality of screw grooves 9b formed therein; Coupled to the upper and lower side panels 9b 'by a screw 24, protrusions 20a are formed to cover one open side of the upper and lower two heating pipes 9a', and each heating pipe is formed on the inner side. (9a ') is a hot water pipe installation hole 21 for supporting the hot water pipe (9d') is inserted into the inside, the pipe connection elbow connected to the inlet pipe (17) and / or outlet pipe (18) 22, the first injection cap 20 is formed; A pair of hot water pipes 9d 'coupled to the hot water pipe installation holes 21 of the first injection cap 20 and protruding to the outside through the surface of the heating pipe 9a'; And it is coupled to the first injection cap 20 by a screw 24 is composed of a second injection cap 30 to form a communication path communicating the upper and lower hot water pipe installation hole 21 with each other.

Description

Combined heating and hot water pipe structure of heat exchanger for gas boiler

The present invention simplifies the assembly of the heat exchanger and can be dismantled and cleaned as needed after the heat exchanger is manufactured to prevent waste of resources caused by replacing the entire heat exchanger when troubleshooting and to reduce repair costs accordingly. The present invention relates to a heating and hot water pipe coupling structure of a heat exchanger for a gas boiler.

In general, a gas boiler burns gas using fuel, heats water by heat exchange using heat generated in the combustion process, and circulates the heated water along a heating pipe in the room to heat the water. It is equipped with the function to supply hot water to a bathroom, a sink, etc.

1 is a schematic configuration diagram of a conventional gas boiler using a bidirectional circulation pump.

As shown in the drawing, the gas boiler has a gas inlet pipe 1 through which external gas is introduced, a gas valve 2 for adjusting the pressure of the gas supplied as installed on the gas inlet pipe 1, and the gas inlet pipe ( 1) the burner (3) which burns by mixing the gas and air introduced through the combustion, the flue (4) for discharging the burned exhaust gas, and the exhaust gas of the flue (4) at the same time as the air is sucked into the burner (3) The exhaust fan 5 for forcibly discharging the gas is included.

In addition, the gas boiler is a water tank for temporarily storing the heating water returned as installed on the heating return pipe (6), the heat return and return pipe (6) where the heating water from the heating pipe (not shown) of each room to be heated. (7), two-way circulation pump for circulating the heating water and selecting and changing the flow of the heating water when using the heating and hot water (8), heat exchanger for heating the heating water (9), and heating the heated water to the heating pipe of each room Heating water supply pipe (10) for supplying, water supplement pipe (11) for replenishing the heating water, automatic supplement water valve (12) installed on the water supplement pipe (11), direct water supply when using hot water to the heat exchanger (9) The hot water supply pipe 13, the hot water supply pipe 14 for discharging the heated hot water from the heat exchanger (9), and the flow switch 15 for detecting the flow of direct water when using hot water.

The gas boiler is capable of heating and using hot water. The use of hot water, that is, the direct flow of the direct water supply pipe 13 is detected by the flow switch 15, and the flow switching of the heating water is performed by the flow switch (as described above). It is made by the circulation pump (8) is changed in the rotation direction in accordance with the hot water use state detection of 15).

On the other hand, the amount of heating water in the heating pipe decreases little by little due to evaporation, etc. If the amount of heating water decreases above a certain level, the float switch 7a in the water tank 7 detects this and the automatic refill water valve 12 Open). When the automatic refill water valve 12 is opened, water is replenished in the heating pipe. When the water is replenished to a certain level, the float switch 7a detects this again and closes the automatic refill water valve 12.

As described above, the heating of the heating water in the conventional gas boiler is performed by the heat exchange action between the heat generated by the combustion action of the burner 3 and the heating water in the heat exchanger 9, and the heating of the hot water is performed by heating the heated water. It is made by the heat exchange effect with the direct water (hot water) flowing through the hot water pipe in the heat exchanger (9).

In the heat exchanger 9 performing the functions of heating water heating and hot water as described above, the combined structure of the heating and hot water pipes is shown in FIG. 2 in the side panel 9b, the heating pipe 9a, After joining the copper cap 9c and the hot water pipe 9d to each other by brazing the joints, they are assembled.Then, the brass cap 9c is forged in the heating pipe 9a. (9e) is constructed by welding. The inlet pipe 17 or the outlet pipe 18 described above is fastened to the fitting 9e by using a nut.

As described above, the conventional heat exchanger 9 has a problem in that the assembly work takes a lot of time and the manufacturing cost increases accordingly because each component is assembled by welding.

In addition, since each part is integrated by welding, it cannot be disassembled once manufactured.

However, in the heat exchanger 9, foreign matters accumulate in the heating pipe 9a and the hot water pipe 9d, and a clogging phenomenon often occurs, and a damage such as burst occurs due to the corrosion effect of oxidation of these parts. .

In this case, when a defect occurs, conventionally, the heat exchanger 9 is not disassembled and repaired, but the entire heat exchanger is replaced.

Therefore, in the related art, waste of resources is caused by discarding the entire heat exchanger, and there is a problem of burdening a high repair cost on the consumer.

The present invention has been made to solve the above-mentioned problems of the prior art, it is possible to simplify the assembly of the heat exchanger to reduce the manufacturing cost and also due to clogging and oxidation of the heating pipe and hot water pipe by foreign objects Heating and hot water pipe combined structure of the gas boiler heat exchanger that prevents waste of resources that dispose of the whole heat exchanger and saves repair costs for consumers by disassembling and cleaning the heat exchanger in case of damage, etc. To provide that purpose.

The heating and hot water pipe coupling structure of the heat exchanger of the present invention for achieving the above object is a pair of upper and lower pairs of which one end is coupled to communicate with each other and a support ring is formed along the circumferential surface adjacent to the open end of the opposite position, respectively. Heating pipes; Upper and lower side panels in close contact with the support ring adjacent to the open end of the heating pipe, welded along the circumferential surface of the pipe, and having a plurality of screw grooves formed therein; It is coupled to the upper and lower side panels by a screw, a protrusion is formed to surround the open one side of the two upper and lower heating pipes, hot water pipe installation hole for supporting the hot water pipes are inserted into each heating pipe on the inner side A first injection cap having a pipe connection elbow formed therein and connected to the inlet pipe and / or the outlet pipe; A pair of hot water pipes coupled to the hot water pipe installation holes of the first injection cap, the other end of which penetrates the surface of the heating pipe; And a second injection cap coupled to the first injection cap by a screw to form a communication path communicating the upper and lower hot water pipe installation holes with each other.

1 is a schematic configuration diagram of a conventional gas boiler using a bidirectional circulation pump.

Figure 2 is a partial cross-sectional view showing a coupling structure of the heating and hot water pipes of the heat exchanger for a conventional gas boiler.

3 is a partial cross-sectional view showing a coupling structure of the heating and hot water pipes of the heat exchanger for a gas boiler according to the present invention.

* Explanation of symbols for main parts of the drawings

1: gas inlet pipe 2: gas valve

3: burner 4: year

5: exhaust fan 6: heating return pipe

7: water tank 7a: float switch

8: circulating pump 9, 9 ': heat exchanger

10: heating water supply pipe 11: water supply pipe

12: automatic refill water valve 13: direct water supply pipe

14: hot water supply pipe 15: flow switch

16: bypass pipe 17: inlet pipe

18: outlet pipe 20: first injection cap

21: hot water pipe installation worker 22: pipe connection elbow

23: sealing 24: screw

30: second injection cap

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

3 is a partial cross-sectional view showing a coupling structure of the heating and hot water pipes of the heat exchanger for a gas boiler according to the present invention.

As shown, the heat exchanger 9 'according to the present invention is to cover one side of the upper and lower heating pipes 9a' by the first injection cap 20, which is a plastic injection, and the upper and lower heating pipes 9a '. The hot water pipes 9d 'in the inside of the c) are communicated with each other by the second injection cap 30.

The upper and lower heating pipes 9a 'have a plurality of fins formed on the outside in order to increase the heat transfer efficiency as in the conventional case, and a support ring 9a is formed adjacent to one side end. Further, side panels 9b 'are welded adjacent to one end of the heating pipe 9a', respectively. The side panel 9b 'is formed in a circular shape along the circumferential surface of the heating pipe 9a', and a plurality of screw grooves 9b are formed on the surface thereof and are coupled by the screw 24 or the like.

The first injection cap 20 is connected to the side panel 9b. The first injection cap 20 is formed with protrusions 20a having two different top and bottom shapes so as to surround one side surface of the two upper and lower heating pipes 9a '. The inner surface of the first injection cap 20 is also formed with a hot water pipe installation hole 21 for engaging with the hot water pipe 9d 'inserted into each heating pipe 9a', and the inlet pipe 17 or A first injection cap 20 having a pipe connection elbow 22 connected to the outlet pipe 18 is coupled by a screw.

The hot water pipe 9d 'is coupled to the hot water pipe installation hole 21 of the first injection cap 20, and a groove in which the sealing ring 23 is installed is formed on the inner surface of the hot water pipe installation hole 21 to be hermetically sealed. Keep it.

And the second injection cap 30 to form a communication path for communicating the upper and lower hot water pipe installation hole 21 with each other in order to communicate the upper and lower hot water pipe (9d ') is coupled to the first injection cap 20, The second injection cap 30 is fastened by the screw 24 to the first injection cap 20 or the side panel 9b '.

Between the first injection cap 20 and the heating pipe 9a ', between the first injection cap 20 and the hot water pipe 9d', and between the first injection cap 20 and the second injection cap 30 In order to prevent leakage of water, seal rings 23 are provided respectively.

The heat exchanger of the present invention configured as described above acts as follows.

If a foreign material accumulates in the heating pipe 9a 'and hot water pipe 9d' while the heat exchanger 9 'is installed in the boiler, or if these parts are corroded by oxidation, the heat exchanger is disassembled for troubleshooting. do.

Disassembly of the heat exchanger 9 'first separates the inlet tube 17 and the outlet tube 18 from the two pipe connecting elbows 22, and then the side panel 9b' and the first injection cap 20. The first injection cap 20 and the second injection cap 30 to the heating pipe 9a 'and the side panel by unscrewing the screw 24 fastening the screw 24 and the second injection cap 30. 9b ') and hot water pipe 9d'. When the first injection cap 20 and the second injection cap 30 are separated, the heating pipe 9a 'and the hot water pipe 9d' inside the heat exchanger 9 'can be accessed, thereby fixing the The objects can be cleaned, and the parts damaged by the corrosion can be repaired by welding.

The heating and hot water pipe coupling structure of the gas boiler heat exchanger according to the present invention is to be combined by a screw, so the assembly work is simpler compared to the welding method by the welding work, which requires less assembly time and accordingly manufacturing cost There is an advantage of being inexpensive.

In addition, if a blockage occurs in the heating pipe 9a 'and the hot water pipe 9d' by foreign objects or damage occurs due to corrosion by oxidation, the heat exchanger can be disassembled and cleaned and repaired. By replacing the entire heat exchanger when it occurs, it is possible to prevent the waste of resources caused and to reduce the repair cost for the consumer.

Although the present invention has been described in detail only with respect to the described embodiments, it will be apparent to those skilled in the art that various changes or modifications can be made within the spirit and scope of the present invention, and thus such changes or modifications are intended to be provided with the accompanying utility model. It will have to fall within the scope of the registration request.

Claims (1)

In a heat exchanger of a gas boiler for supplying heating water and hot water, a pair of upper and lower heating units having one end portion coupled to communicate with each other and a support ring 9a formed along a circumferential surface adjacent to an open end of an opposite position, respectively. Pipe 9a '; Upper and lower side panels 9b 'in close contact with the support ring 9a adjacent to the open end of the heating pipe 9a', welded along the circumferential surface of the pipe, and having a plurality of screw grooves 9b formed therein; Coupled to the upper and lower side panels 9b 'by a screw 24, protrusions 20a are formed to cover one open side of the upper and lower two heating pipes 9a', and each heating pipe is formed on the inner side. (9a ') is a hot water pipe installation hole 21 for supporting the hot water pipe (9d') is inserted into the inside, the pipe connection elbow connected to the inlet pipe (17) and / or outlet pipe (18) 22, the first injection cap 20 is formed; A pair of hot water pipes 9d 'coupled to the hot water pipe installation holes 21 of the first injection cap 20 and protruding to the outside through the surface of the heating pipe 9a'; And it is coupled to the first injection cap 20 by the screw 24 as a gas, characterized in that composed of a second injection cap 30 to form a communication path communicating the upper and lower hot water pipe installation hole 21 with each other Combined heating and hot water pipe of boiler heat exchanger.