KR101932998B1 - Gas boiler have ventilation duct prevention damaged thermistor - Google Patents

Abstract

The present invention relates to a gas boiler with a thermistor damage preventing ventilation duct. According to the present invention, a combustion chamber, a heat exchange inflow fan, and a water supply device are installed in a boiler housing having an air inlet and an air outlet formed therein, and a ventilation duct having a thermistor is formed around the inside of the air outlet of the boiler housing, such that a discharge pipe is inserted into the air outlet of the boiler housing. Accordingly, the bottom circumference of the discharge pipe entering the air outlet is locked to a blocking step covering the upper part of the thermistor, such that the thermistor is prevented from colliding with the discharge pipe. Moreover, the bottom of the discharge pipe is locked to the blocking step of the ventilation duct in insertion of the discharge pipe into the air outlet, such that the discharge pipe is prevented from colliding with the thermistor, and condensate flowing in a connection part or dropped from the bottom of the discharge pipe is dropped in the blocking step covering the upper side of the thermistor, such that the thermistor is prevented from coming in contact with water. In particular, the temperature of discharged gas is precisely measured by the thermistor, such that normal operation of the boiler is correctly determined, thereby providing an advantage of improving reliability of a product.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a gas boiler having an exhaust duct for preventing breakdown of a thermistor,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas boiler, and more particularly, to a gas boiler having an exhaust duct having a thermistor inside an exhaust port of a boiler housing and introducing the exhaust pipe into an exhaust port of the boiler housing, To a gas boiler provided with an exhaust duct for preventing breakdown of a thermistor, which prevents the exhaust pipe from being collided with a thermistor.

Generally, a gas boiler uses gas as a fuel, heats water using combustion heat generated when the gas is burned, and uses a circulation pump for forcibly circulating the heated and heated water, To heat the room, and to supply heated water to hot water in bathrooms and kitchens.

Patent Literature 1 discloses a conventional gas boiler. Referring to this, a boiler having a burner therein, an air damper motor connected to the burner of the boiler to supply outside air to the burner, and a burner A fuel damper motor for supplying fuel to the burner and a sensor module which protrudes upward at one end of the boiler and communicates with the boiler, and a sensor module installed on the inner circumferential surface of the burner for measuring the temperature of the exhaust gas discharged through the flue .

Here, when the air damper motor and the fuel damper motor are driven to simultaneously supply air and fuel to the burner, air and fuel are mixed in the burner to generate a mixed gas.

Then, the burner generates a flame by burning the mixed gas, and the flame heats the internal space of the boiler so that the boiler is heated.

The mixed gas is burned by the burner to exhaust the exhaust gas, and the exhaust gas is discharged to the outside of the boiler through the flue.

Here, the exhaust gas discharged through the flue passes over the sensor module. At this time, the sensor module measures the temperature of the exhaust gas and transfers the measured temperature to the control unit. In this control unit, The temperature is compared and calculated to determine the normal temperature of the boiler and whether it is operating normally.

However, in the above-described Patent Document 1, when the extension pipe is installed in the flue for discharging the exhaust gas, the extension pipe collides with the sensor module while entering the flue, so that the sensor module is easily broken. Also, It is impossible to accurately measure the temperature of the exhaust gas by the sensor module, and the control unit judges that the boiler state is defective due to the failure of the temperature measurement due to the damage of the sensor module or the contact with the rainwater. In particular, There is a problem that the reliability of the product is deteriorated.

KR 10-1738091 B1

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a combustion chamber, a heat exchanger intake fan, and a water supply device in a boiler housing having a feed mechanism and an exhaust port, A thermistor is provided in the exhaust port of the boiler housing and the exhaust pipe is inserted into the exhaust port of the boiler housing to prevent the thermistor from colliding with the exhaust pipe due to the engagement of the lower edge of the exhaust pipe entering the exhaust port into the blocking jaw covering the upper portion of the thermistor, And to provide a gas boiler provided with an exhaust duct for preventing breakage.

In order to accomplish the object of the present invention, the gas boiler provided with the exhaust duct for preventing breakdown of the thermistor according to the present invention includes: a supply mechanism for sucking outside air in an upper part in a hollow shape; A boiler housing having an exhaust port formed therein; A combustion chamber installed at one side of the inside of the boiler housing and being ignited by mixing air and gas supplied through the air supply mechanism; A heat exchanger installed inside the combustion chamber and being heated in the combustion chamber; An intake fan provided at a front end of the combustion chamber and forcibly sucking air through the air supply mechanism to supply the air to the combustion chamber; A water supply device connected to the heat exchanger to supply water to the heat exchanger; And a thermistor disposed around the inside of the exhaust port of the boiler housing for measuring an exhaust gas temperature discharged through the exhaust port, wherein the boiler housing is installed on the inner upper surface and communicates with the exhaust port in a hollow shape, And the thermistor is formed on the inner circumferential surface of the connecting portion so as to form a coupling hole, and the upper portion of the coupling hole is provided with a blocking jaw for preventing the exhaust pipe entering the connecting portion from colliding with the thermistor, And further includes a duct.

In the gas boiler provided with the exhaust duct for preventing breakdown of the thermistor according to the present invention, the blocking jaw is provided with a light oil groove which is recessed upwardly in the bottom surface thereof, and in which a part of the exhaust gas moving through the exhaust port is passed through .

In the gas boiler provided with the exhaust duct for preventing breakdown of the thermistor according to the present invention, the blocking jaw is further formed with a bending jaw which protrudes upward at the end thereof and is inserted into the exhaust pipe.

In the gas boiler provided with the exhaust duct for preventing breakdown of the thermistor according to the present invention, the blocking jaw is formed so as to be inclined downwardly on one side of the bending jaw, so that the water dropped on the blocking jaw flows down the blocking jaw And an inclined hole for guiding the light beam is further formed.

In the gas boiler provided with the exhaust duct for preventing breakdown of the thermistor according to the present invention, the blocking jaw is formed with a plurality of through holes spaced at predetermined intervals on the upper surface thereof, Is further formed.

In the gas boiler provided with the exhaust duct for preventing breakdown of the thermistor according to the present invention, the blocking jaws are protruded symmetrically with respect to each other with respect to the thermistor, and a through hole through which the exhaust gas passes is formed .

In the gas boiler provided with the exhaust duct for preventing breakdown of the thermistor according to the present invention, the exhaust duct may protrude from the inner circumferential surface of the connection portion so as to be flush with the cut-off jaw so that the exhaust pipe enters the exhaust hole at a predetermined depth or more And at least two restricting jaws are formed to cut off.

In the gas boiler provided with the exhaust duct for preventing breakage of the thermistor according to the present invention, the inner diameter of the limiting jaw is relatively smaller than the outer circumferential diameter of the exhaust pipe and relatively wider than the inner circumferential diameter of the exhaust pipe .

In the gas boiler provided with the exhaust duct for preventing breakdown of the thermistor according to the present invention, each of the limiting tangs is further provided with an inserting jaw which is formed so as to protrude upward in each of the inner circumferential surfaces and inserted into the exhaust pipe.

According to the present invention, when inserting the exhaust pipe into the exhaust port, the lower end of the exhaust pipe is caught by the blocking jaw of the exhaust duct, so that the exhaust pipe is prevented from colliding with the thermistor, the deformation due to the flow during installation and use of the exhaust pipe is minimized, The condensed water flowing into the connection portion or falling down from the lower end of the exhaust pipe is dropped onto the blocking protrusion covering the upper portion of the thermistor to prevent water from contacting the thermistor and a plurality of insertion protrusions are spaced at predetermined intervals to reduce the area of the exhaust port And the resistance of the exhaust flow is minimized. In particular, it is possible to accurately determine whether the boiler is operating normally by accurately measuring the exhaust gas temperature with a thermistor, thereby improving the reliability of the product.

1 is a schematic view showing a gas boiler provided with an exhaust duct for preventing breakdown of a thermistor according to the present invention.
2 is a partially exploded perspective view of a gas boiler provided with an exhaust duct for preventing breakdown of a thermistor according to the present invention;
3 is a side perspective view of a gas boiler provided with an exhaust duct for preventing damage to a thermistor according to the present invention.
4 is a cross-sectional perspective view illustrating an exhaust duct of a gas boiler provided with an exhaust duct for preventing breakdown of a thermistor according to the present invention.
5 to 6 are cross-sectional perspective views showing another embodiment of an exhaust duct of a gas boiler provided with an exhaust duct for preventing breakdown of a thermistor according to the present invention.

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

Referring to FIGS. 1 to 6, the boiler housing 100 has a hollow shape and forms an air supply mechanism 101 for sucking outside air and an exhaust port 102 for exhausting the exhaust gas to the outside.

The exhaust port 102 allows the exhaust pipe P to be inserted into the exhaust port 102 and exhausts the exhaust gas in the boiler housing 100 to the outside of the boiler housing 100 through the exhaust pipe P.

The boiler housing 100 is installed on the upper surface of the boiler housing 100 and has a hollow shape communicating with the exhaust port 102 to form a connection portion 111 for allowing the exhaust pipe P to enter the boiler housing 100, The coupling hole 112 is formed in the coupling hole 112 to prevent the exhaust pipe P from entering the coupling portion 111 from colliding with the thermistor 600. [ 113 formed in the exhaust duct 110.

The exhaust duct 110 is configured to catch the lower end of the exhaust pipe P entering the exhaust port 102 to the blocking jaw 113 to prevent the exhaust pipe P from colliding with the thermistor 600 .

Water flowing downward along the outer circumferential surface of the exhaust pipe P between the inner circumferential surface of the connecting portion 111 and the outer circumferential surface of the exhaust pipe P passes through the gap between the connecting portion 111 and the exhaust pipe P, (Not shown) to block the inflow of the steam into the boiler housing 100 through the steam generator.

It is preferable that the outer circumferential surface of the connecting portion 111 is formed in a cylindrical shape.

The blocking jaw 113 is formed on the bottom surface of the blocking jaw 113 so as to form a light oil groove 113a through which a part of the exhaust gas moving to the exhaust port 102 passes.

The duel groove 113a induces a part of the exhaust gas traveling to the exhaust port 102 to pass through the vicinity of the thermistor 600 and delays the exhaust gas flow so that the thermistor 600 measures the exhaust gas temperature .

The cut-off step 113 is further formed with a bending step 113b protruding upward at the distal end thereof and inserted into the exhaust pipe P.

The end of the bending step 113b is in close contact with the inner circumferential surface of the exhaust pipe P to prevent the exhaust pipe P from flowing in the connecting part 111 before,

The blocking jaws 113 are formed on the one side of the bending jaws 113b to be inclined downward so that the water dropped into the blocking jaws 113 is guided to the lower side of the blocking jaws 113, -1).

The blocking jaws 113 are formed on the upper surface of the blocking jaws 113 so as to be spaced apart from each other by a predetermined distance. The blocking jaws 113 further include a water discharge hole 113c through which the water falls down to the blocking jaws 113.

It is preferable that the water discharge hole 113c is formed on a vertical line different from the thermistor 600.

Water falling into the blocking jaw 113 is water flowing between the connecting portion 111 and the exhaust pipe P or condensed water falling down at the bottom of the exhaust pipe P and falling down.

The blocking jaws 113 protrude from the thermistor 600 symmetrically with respect to the thermistor 600 and form a through hole 113d through which the exhaust gas passes.

The through hole 113d guides the exhaust gas flow so that exhaust gas is collected near the thermistor 600 and flows into the exhaust pipe 102. [

The exhaust duct 110 protrudes from the inner circumferential surface of the connection part 111 so as to be flush with the blocking protrusions 113 so as to prevent the exhaust pipe P from entering the exhaust port 102 beyond a predetermined depth Two or more restricting jaws 114 are further formed.

The inner diameter of the restriction protrusion 114 is relatively smaller than the diameter of the outer circumference of the exhaust pipe P and relatively larger than the inner diameter of the exhaust pipe P, P is prevented from interfering with the restricting jaw 114. As a result,

The restricting jaws 114 further have insertion grooves 114a protruding upward from the inner circumferential surfaces thereof and inserted into the exhaust pipe P, respectively.

The distal end of the insertion jaw 114a is brought into close contact with the inner circumferential surface of the exhaust pipe P to prevent the exhaust pipe P from flowing in the connecting portion 111 before,

The combustion chamber 200 is installed at one side of the inside of the boiler housing 100 and is operated by igniting the air supplied through the air supply mechanism 101 and the gas.

 The heat exchanger 300 is installed inside the combustion chamber 200 and is heated in the combustion chamber 200.

The heat exchanger 300 is heated by the flame generated in the combustion chamber 200.

The heat exchanger 300 forms a pipe 300a connected to the water supply device 500 at its periphery and transfers the water delivered from the water supply device 500 through the pipe 300a to the heat exchanger (300), and the water is heated by a heat exchange function.

The intake fan 400 is installed at the front end of the combustion chamber 200 and forcibly sucks air through the air supply mechanism 101 and supplies the air to the combustion chamber 200.

The water supply device 500 is connected to the heat exchanger 300 to supply water to the heat exchanger 300.

The water supply device 500 supplies water to the pipe 300a formed around the heat exchanger 300 so that the water passes through the pipe 300a and the water passed through the pipe 300a is heat- And is then supplied to the hot water or circulated through the heating pipe to heat the room.

The thermistor 600 is installed around the exhaust port 102 of the boiler housing 100 to measure the temperature of the exhaust gas discharged through the exhaust port 102.

One end of the thermistor 600 is exposed to the inside of the connection part 111 of the exhaust duct 110 and the other end of the thermistor 600 is exposed to the outside of the connection part 111 to be connected to a control part (not shown) installed in the boiler housing 100 .

The gas boiler provided with the exhaust duct for preventing breakdown of the thermistor according to the present invention constructed as above is used as follows.

[First Embodiment]

In the following description, an exhaust duct according to the first embodiment will be described as an example.

First, an exhaust duct 110 is tightly fixed to an inner upper surface of a boiler housing 100 so that a connection portion 111 of the exhaust duct 110 and an exhaust port 102 of the boiler housing 100 are communicated with each other.

The connection part 111 of the exhaust duct 110 is exposed above the exhaust port 102 of the boiler housing 100 by a predetermined height or more and an airtight packing is installed on the inner circumferential surface of the connection part 111 do.

When the exhaust pipe P is introduced into the exhaust port 102, the exhaust pipe P passes through the exhaust port 102 and then enters the connection portion 111 of the exhaust duct 110. At this time, The lower end of the exhaust pipe P is tightly engaged with the blocking jaws 113 formed on the inner circumferential surface of the connecting portion 111 to prevent the exhaust pipe P from colliding with the thermistor 600.

At this time, when the exhaust pipe P enters the connection part 111, a sealing packing (not shown) provided in the connection part 111 is pressed between the connection part 111 and the exhaust pipe P, So that water flowing between the connecting portion 111 and the exhaust pipe P is blocked from flowing into the boiler housing 110.

A plurality of restricting tails 114 are formed on the inner circumferential surface of the connecting portion 111 of the exhaust duct 110 along the inner circumferential surface of the connecting portion 111 so as to be flush with the blocking jaws 113, The depth of entry of the exhaust pipe P entering the exhaust port 102 is limited.

The blocking jaw 113 is formed at its distal end with a bending jaw 113b and the limiting jaw 114 is formed with an insertion jaw 114a at its distal end so that the bending jaw 113b, The jaw 114a is inserted into the exhaust pipe P so that the bending step 113b and the insertion step 114a are closely contacted with the inner circumferential surface of the exhaust pipe P, P are fixed in the connecting portion 111 by the bending step 113b and the insertion step 114a to prevent them from flowing to the front, rear, left, or right side.

At this time, the blocking jaw 113 forms a light oil groove 113a through which a part of the exhaust gas flowing into the exhaust pipe P passes through the thermistor 600 and is delayed in exhausting the exhaust gas .

The bending step 113b has a downwardly sloping inclined hole 113b for preventing water from falling down into the blocking jaw 115a in one direction to prevent water from contacting the thermistor 600 -1).

The inner diameter of each of the bending step 113b and the insertion step 114a is formed to be smaller than the diameter of the outer circumferential surface of the exhaust pipe P so as to support and support the exhaust pipe P.

Thereafter, a finishing frame (not shown) for covering the exhaust pipe P and the connecting portion 111 of the exhaust duct 110 is installed on the upper surface of the boiler housing 100, (P) is connected and fixed to the exhaust pipe (102).

Then, when the boiler is operated to operate the suction fan 400 provided in the boiler housing 100, the suction fan 400 is operated by the suction pressure of the suction fan 400, The air is forcibly sucked.

The air introduced into the combustion chamber 200 through the intake fan 400 is mixed with the gas in the combustion chamber 200 to generate a mixed gas, and the mixed gas is combusted to generate a flame.

At this time, the mixed gas generated in the combustion chamber 200 is ignited in the combustion chamber 200 to generate a flame, and the flame heats the heat exchanger 300 provided in the combustion chamber 200, The heat exchanger 300 is heated.

The water supply device 500 supplies water to the pipe 300a formed around the heat exchanger 300. At this time, the water passing through the pipe 300a is heat-exchanged with the heat exchanger 300 And then the heated water is introduced into the heating pipe to raise the temperature of the room, or is discharged through piping such as a kitchen or a bathroom to provide hot water.

In the combustion chamber 200, exhaust gas is generated due to the mixed gas combustion, and the exhaust gas is moved to above the combustion chamber 200 and flows into the connection portion 111 of the exhaust duct 110.

At this time, the diameter of the inner circumference of the cut-off step 113 and the insertion step 114 of the exhaust duct 110 is formed to be wider than the inner diameter of the exhaust pipe P so that the exhaust gas flowing into the connection part 111 Is discharged upward through the exhaust pipe (P) without interfering with the blocking jaw (113) or the insertion jaw (114a).

Part of the exhaust gas flowing to the exhaust pipe P passes through the diesel oil groove 113a of the blocking jaw 113 and is then discharged to the outside through the exhaust pipe P. [

At this time, the thermistor 600 measures the exhaust gas temperature while passing the exhaust gas through the light oil groove 113a, and transfers the temperature signal to a control unit (not shown) provided in the boiler housing 100.

Here, the temperature of the exhaust gas measured in the thermistor 600 is calculated to check the operation of the heat exchanger 300, the combustion chamber 200, and the like.

When the water flowing into the space between the exhaust pipe P and the connecting portion 111 or the condensed water falling down to the lower end of the exhaust pipe P which is formed at the end of the exhaust pipe P falls to the blocking jaw 113 The water flow is guided through the inclined holes 113b-1 of the bending step 113b and is moved in one direction so that the water passing through the inclined holes 113b-1 drops downward, 600 are prevented from contacting the water.

[Second Embodiment]

In the following description, an exhaust duct according to the second embodiment will be described as an example, and the same contents as those described above will be omitted.

First, an exhaust duct 110 is tightly fixed to an inner upper surface of a boiler housing 100 so that a connection portion 111 of the exhaust duct 110 and an exhaust port 102 of the boiler housing 100 are communicated with each other.

The connection part 111 of the exhaust duct 110 is exposed above the exhaust port 102 of the boiler housing 100 by a predetermined height or more and an airtight packing is installed on the inner circumferential surface of the connection part 111 do.

When the exhaust pipe P is introduced into the exhaust port 102, the exhaust pipe P passes through the exhaust port 102 and then enters the connection portion 111 of the exhaust duct 110. At this time, The lower end of the exhaust pipe P is tightly engaged with the blocking jaws 113 formed on the inner circumferential surface of the connecting portion 111 to prevent the exhaust pipe P from colliding with the thermistor 600.

At this time, when the exhaust pipe P enters the connection part 111, a sealing packing (not shown) provided in the connection part 111 is pressed between the connection part 111 and the exhaust pipe P, So that water flowing between the connecting portion 111 and the exhaust pipe P is blocked from flowing into the boiler housing 110.

A plurality of restricting tails 114 are formed on the inner circumferential surface of the connecting portion 111 of the exhaust duct 110 along the inner circumferential surface of the connecting portion 111 so as to be flush with the blocking jaws 113, The depth of entry of the exhaust pipe P entering the exhaust port 102 is limited.

The blocking jaw 113 is formed at its distal end with a bending jaw 113b and the limiting jaw 114 is formed with an insertion jaw 114a at its distal end so that the bending jaw 113b, The jaw 114a is inserted into the exhaust pipe P so that the bending step 113b and the insertion step 114a are closely contacted with the inner circumferential surface of the exhaust pipe P, P are fixed in the connecting portion 111 by the bending step 113b and the insertion step 114a to prevent them from flowing to the front, rear, left, or right side.

At this time, the blocking jaw 113 is formed with a plurality of water discharge holes 113c spaced at predetermined intervals on the upper surface thereof, and the bending jaw 113b is formed with inclined holes 113b-1 The water dropped into the blocking jaws 113 drops downward through the water discharge hole 113c and the inclined holes 113b-1.

The water discharge hole 113c is formed to be deviated from the vertical line of the thermistor 600 provided below the blocking jaws 113 so that the water falling down to the lower portion of the blocking jaws 113 flows into the thermistor 600, .

The inner diameter of each of the bending step 113b and the insertion step 114a is formed to be smaller than the diameter of the outer circumferential surface of the exhaust pipe P so as to support and support the exhaust pipe P.

Thereafter, a finishing frame (not shown) for covering the exhaust pipe P and the connecting portion 111 of the exhaust duct 110 is installed on the upper surface of the boiler housing 100, (P) is connected and fixed to the exhaust pipe (102).

Then, when the boiler is operated to operate the suction fan 400 provided in the boiler housing 100, the suction fan 400 is operated by the suction pressure of the suction fan 400, The air is forcibly sucked.

The air introduced into the combustion chamber 200 through the intake fan 400 is mixed with the gas in the combustion chamber 200 to generate a mixed gas, and the mixed gas is combusted to generate a flame.

At this time, the mixed gas generated in the combustion chamber 200 is ignited in the combustion chamber 200 to generate a flame, and the flame heats the heat exchanger 300 provided in the combustion chamber 200, The heat exchanger 300 is heated.

The water supply device 500 supplies water to the pipe 300a formed around the heat exchanger 300. At this time, the water passing through the pipe 300a is heat-exchanged with the heat exchanger 300 And then the heated water is introduced into the heating pipe to raise the temperature of the room, or is discharged through piping such as a kitchen or a bathroom to provide hot water.

In the combustion chamber 200, exhaust gas is generated due to the mixed gas combustion, and the exhaust gas is moved to above the combustion chamber 200 and flows into the connection portion 111 of the exhaust duct 110.

At this time, the diameter of the inner circumference of the cut-off step 113 and the insertion step 114 of the exhaust duct 110 is formed to be wider than the inner diameter of the exhaust pipe P so that the exhaust gas flowing into the connection part 111 Is discharged upward through the exhaust pipe (P) without interfering with the blocking jaw (113) or the insertion jaw (114a).

The exhaust gas flowing into the exhaust pipe P is measured in the thermistor 600 and the temperature of the exhaust gas measured in the thermistor 600 is calculated to calculate the exhaust gas temperature in the heat exchanger 300, ) And the like.

When the water flowing into the space between the exhaust pipe P and the connecting portion 111 or the condensed water falling down to the lower end of the exhaust pipe P which is formed at the end of the exhaust pipe P falls to the blocking jaw 113 The flow of water is guided through the inclined holes 113b-1 of the bending step 113b and is guided in one direction So that the water that has passed through the water discharge hole 113c and the inclined hole 113b-1 drops downward to prevent the water from contacting the thermistor 600. As a result,

[Third Embodiment]

In the following description, the exhaust duct according to the third embodiment will be described as an example, and the same contents as those described above will be omitted.

First, an exhaust duct 110 is tightly fixed to an inner upper surface of a boiler housing 100 so that a connection portion 111 of the exhaust duct 110 and an exhaust port 102 of the boiler housing 100 are communicated with each other.

The connection part 111 of the exhaust duct 110 is exposed above the exhaust port 102 of the boiler housing 100 by a predetermined height or more and an airtight packing is installed on the inner circumferential surface of the connection part 111 do.

When the exhaust pipe P is introduced into the exhaust port 102, the exhaust pipe P passes through the exhaust port 102 and then enters the connection portion 111 of the exhaust duct 110. At this time, The lower end of the exhaust pipe P is tightly engaged with the blocking jaws 113 formed on the inner circumferential surface of the connecting portion 111 to prevent the exhaust pipe P from colliding with the thermistor 600.

At this time, when the exhaust pipe P enters the connection part 111, a sealing packing (not shown) provided in the connection part 111 is pressed between the connection part 111 and the exhaust pipe P, So that water flowing between the connecting portion 111 and the exhaust pipe P is blocked from flowing into the boiler housing 110.

A plurality of restricting tails 114 are formed on the inner circumferential surface of the connecting portion 111 of the exhaust duct 110 along the inner circumferential surface of the connecting portion 111 so as to be flush with the blocking jaws 113, The depth of entry of the exhaust pipe P entering the exhaust port 102 is limited.

Here, the blocking jaws 113 are formed in pairs so as to correspond to each other, and a through hole 113d is formed therebetween.

The stop jaw 113 forms a bending jaw 113b at its distal end and the restriction jaw 114 forms an insertion jaw 114a at its distal end so that the bending jaw 113b and the insertion The jaw 114a is inserted into the exhaust pipe P so that the bending step 113b and the insertion step 114a are closely contacted with the inner circumferential surface of the exhaust pipe P, P are fixed in the connecting portion 111 by the bending step 113b and the insertion step 114a to prevent them from flowing to the front, rear, left, or right side.

At this time, the bending step 113b forms a downwardly inclined hole 113b-1 on one surface thereof so that the water dropped into the blocking step 113 is guided through the inclined hole 113b- (113).

The inner diameter of each of the bending step 113b and the insertion step 114a is formed to be smaller than the diameter of the outer circumferential surface of the exhaust pipe P so as to support and support the exhaust pipe P.

Thereafter, a finishing frame (not shown) for covering the exhaust pipe P and the connecting portion 111 of the exhaust duct 110 is installed on the upper surface of the boiler housing 100, (P) is connected and fixed to the exhaust pipe (102).

Then, when the boiler is operated to operate the suction fan 400 provided in the boiler housing 100, the suction fan 400 is operated by the suction pressure of the suction fan 400, The air is forcibly sucked.

The air introduced into the combustion chamber 200 through the intake fan 400 is mixed with the gas in the combustion chamber 200 to generate a mixed gas, and the mixed gas is combusted to generate a flame.

At this time, the mixed gas generated in the combustion chamber 200 is ignited in the combustion chamber 200 to generate a flame, and the flame heats the heat exchanger 300 provided in the combustion chamber 200, The heat exchanger 300 is heated.

The water supply device 500 supplies water to the pipe 300a formed around the heat exchanger 300. At this time, the water passing through the pipe 300a is heat-exchanged with the heat exchanger 300 And then the heated water is introduced into the heating pipe to raise the temperature of the room, or is discharged through piping such as a kitchen or a bathroom to provide hot water.

In the combustion chamber 200, exhaust gas is generated due to the mixed gas combustion, and the exhaust gas is moved to above the combustion chamber 200 and flows into the connection portion 111 of the exhaust duct 110.

At this time, the diameter of the inner circumference of the cut-off step 113 and the insertion step 114 of the exhaust duct 110 is formed to be wider than the inner diameter of the exhaust pipe P so that the exhaust gas flowing into the connection part 111 Is discharged upward through the exhaust pipe (P) without interfering with the blocking jaw (113) or the insertion jaw (114a).

Part of the exhaust gas flowing into the exhaust pipe P flows into the connecting portion 111 through the passage hole 113d between the blocking jaws 113 so that the passage between the blocking jaws 113 The exhaust gas is concentrated in the hole 113d and the temperature of the exhaust gas concentrated around the through hole 113d by the thermistor 600 is measured.

Then, an exhaust gas temperature signal measured by the thermistor is transmitted to a control unit (not shown) to calculate the exhaust gas temperature to check whether the heat exchanger 300, the combustion chamber 200, and the like are operated.

When the water flowing into the space between the exhaust pipe P and the connecting portion 111 or the condensed water falling down to the lower end of the exhaust pipe P which is formed at the end of the exhaust pipe P falls to the blocking jaw 113 The water flow is guided through the inclined hole 113b-1 of the bending step 113b and is moved in one direction so that the water having passed through the inclined hole 113b-1 drops downward, Water is prevented from coming into contact with the substrate 600.

The lower end of the exhaust pipe is caught by the cut-off jaw of the exhaust duct when the exhaust pipe is inserted into the exhaust port, and the lower end of the exhaust pipe is caught by the cut-off jaw of the exhaust duct when the exhaust pipe is inserted into the exhaust port, The exhaust pipe is prevented from colliding with the thermistor and the condensed water flowing into the connecting portion or falling from the lower end of the exhaust pipe drops to the blocking jaw covering the upper portion of the thermistor to prevent water from contacting the thermistor, By accurately measuring the gas temperature, it is possible to accurately determine whether the boiler is operating normally.

The gas boiler having the exhaust duct for preventing overheating according to the present invention is not limited to the above-described embodiment, and can be applied to a conventional gas boiler, There is a technical spirit to the extent that anyone with knowledge can make various changes.

100: boiler housing 101: feed mechanism
102: exhaust port 110: exhaust duct
111: connecting part 112: engaging hole
113: blocking jaw 113a: light oil groove
113b: bending jaw 113b-1: inclined hole
113c: water discharge hole 113d: through hole
114: Restricted chin 114a:
200: combustion chamber 300: heat exchanger
300a: piping 400: suction fan
500: water supply device 600: thermistor
P: Exhaust pipe

Claims (9)

A boiler housing (100) having an air supply device (101) for sucking outside air in an upper portion thereof and an exhaust port (102) for exhausting the exhaust gas to the outside;
A combustion chamber 200 installed at one side of the inside of the boiler housing 100 and ignited by mixing air and gas supplied through the air supply mechanism 101;
A heat exchanger 300 installed in the combustion chamber 200 and operated in the combustion chamber 200;
An intake fan 400 installed at a front end of the combustion chamber 200 for forcibly sucking air through the air supply mechanism 101 and supplying the air to the combustion chamber 200;
A water supply device 500 connected to the heat exchanger 300 to supply water to the heat exchanger 300;
A thermistor 600 disposed around the inside of the exhaust port 102 of the boiler housing 100 for measuring the temperature of the exhaust gas discharged through the exhaust port 102;
≪ / RTI >
The boiler housing (100)
And a connection portion 111 communicating with the exhaust port 102 and allowing entry of the exhaust pipe P is formed in a hollow shape on the inner upper surface of the connecting portion 111. The thermistor 600 is coupled to the inner circumferential surface of the connecting portion 111, And a stopper 113 formed on the coupling hole 112 to prevent the exhaust pipe P entering the connection portion 111 from colliding with the thermistor 600. The exhaust duct (110), < / RTI >
The blocking jaw (113)
And a dew condensation groove (113a) formed on the bottom surface of the exhaust duct (113) so as to allow a part of the exhaust gas to pass through the exhaust port (102). A boiler housing (100) having an air supply device (101) for sucking outside air in an upper portion thereof and an exhaust port (102) for exhausting the exhaust gas to the outside;
A combustion chamber 200 installed at one side of the inside of the boiler housing 100 and ignited by mixing air and gas supplied through the air supply mechanism 101;
A heat exchanger 300 installed in the combustion chamber 200 and operated in the combustion chamber 200;
An intake fan 400 installed at a front end of the combustion chamber 200 for forcibly sucking air through the air supply mechanism 101 and supplying the air to the combustion chamber 200;
A water supply device 500 connected to the heat exchanger 300 to supply water to the heat exchanger 300;
A thermistor 600 disposed around the inside of the exhaust port 102 of the boiler housing 100 for measuring the temperature of the exhaust gas discharged through the exhaust port 102;
≪ / RTI >
The boiler housing (100)
And a connection portion 111 communicating with the exhaust port 102 and allowing entry of the exhaust pipe P is formed in a hollow shape on the inner upper surface of the connecting portion 111. The thermistor 600 is coupled to the inner circumferential surface of the connecting portion 111, And a stopper 113 formed on the coupling hole 112 to prevent the exhaust pipe P entering the connection portion 111 from colliding with the thermistor 600. The exhaust duct (110), < / RTI >
The blocking jaw (113)
And a bending jaw (113b) protruding upward at a distal end thereof and inserted into the exhaust pipe (P). A boiler housing (100) having an air supply device (101) for sucking outside air in an upper portion thereof and an exhaust port (102) for exhausting the exhaust gas to the outside;
A combustion chamber 200 installed at one side of the inside of the boiler housing 100 and ignited by mixing air and gas supplied through the air supply mechanism 101;
A heat exchanger 300 installed in the combustion chamber 200 and operated in the combustion chamber 200;
An intake fan 400 installed at a front end of the combustion chamber 200 for forcibly sucking air through the air supply mechanism 101 and supplying the air to the combustion chamber 200;
A water supply device 500 connected to the heat exchanger 300 to supply water to the heat exchanger 300;
A thermistor 600 disposed around the inside of the exhaust port 102 of the boiler housing 100 for measuring the temperature of the exhaust gas discharged through the exhaust port 102;
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The boiler housing (100)
And a connection portion 111 communicating with the exhaust port 102 and allowing entry of the exhaust pipe P is formed in a hollow shape on the inner upper surface of the connecting portion 111. The thermistor 600 is coupled to the inner circumferential surface of the connecting portion 111, And a stopper 113 formed on the coupling hole 112 to prevent the exhaust pipe P entering the connection portion 111 from colliding with the thermistor 600. The exhaust duct (110), < / RTI >
The blocking jaw (113)
And a through-hole (113d) protruding from the thermistor (600) so as to be symmetrical with respect to each other and through which the exhaust gas passes is formed. A boiler housing (100) having an air supply device (101) for sucking outside air in an upper portion thereof and an exhaust port (102) for exhausting the exhaust gas to the outside;
A combustion chamber 200 installed at one side of the inside of the boiler housing 100 and ignited by mixing air and gas supplied through the air supply mechanism 101;
A heat exchanger 300 installed in the combustion chamber 200 and operated in the combustion chamber 200;
An intake fan 400 installed at a front end of the combustion chamber 200 for forcibly sucking air through the air supply mechanism 101 and supplying the air to the combustion chamber 200;
A water supply device 500 connected to the heat exchanger 300 to supply water to the heat exchanger 300;
A thermistor 600 disposed around the inside of the exhaust port 102 of the boiler housing 100 for measuring an exhaust gas temperature discharged through the exhaust port 102;
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The boiler housing (100)
And a connection portion 111 communicating with the exhaust port 102 and allowing entry of the exhaust pipe P is formed in a hollow shape on the inner upper surface of the connecting portion 111. The thermistor 600 is coupled to the inner circumferential surface of the connecting portion 111, And a stopper 113 formed on the coupling hole 112 to prevent the exhaust pipe P entering the connection portion 111 from colliding with the thermistor 600. The exhaust duct (110), < / RTI >
The exhaust duct (110)
At least two restricting protrusions 114 protruding from the inner circumferential surface of the connecting portion 111 so as to be flush with the blocking protrusions 113 to block entry of the exhaust pipe P into the exhaust port 102 beyond a predetermined depth ) Is further formed,
Wherein the inner diameter of the limiting jaw is relatively smaller than the outer diameter of the exhaust pipe and relatively larger than the inner diameter of the exhaust pipe. Gas boiler. 3. The method of claim 2,
The blocking jaw (113)
And a dew condensation groove (113a) formed on the bottom surface of the exhaust duct (113) so as to allow a part of the exhaust gas to pass through the exhaust port (102). 3. The method of claim 2,
The blocking jaw (113)
The inclined hole 113b-1 is formed so as to be inclined downward on one side of the bending step 113b and guides the water dropped to the blocking step 113 to flow down below the blocking step 113 Wherein the heat exchanger is provided with an exhaust duct for preventing damage to the thermistor. 3. The method of claim 2,
The blocking jaw (113)
And a water discharge hole (113c) formed in the upper surface thereof so as to be spaced apart from the water discharge hole (113c) so as to pass downward the water dropped to the blocking jaw (113) Gas boiler. 5. The method of claim 4,
The limiting jaw (114)
And an insertion step (114a) protruding upward from the inner circumferential surface and inserted into the exhaust pipe (P) is further provided. delete

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