KR20000027316A - Boiler for firewood - Google Patents

Abstract

PURPOSE: A boiler for firewood is provided to improve the thermal efficiency and not to generate the soot by burning completely not only every kind firewood but also the garbage. CONSTITUTION: A boiler for firewood comprises: a container(12) to keep temporarily the heated water; a combustor(30) to be equipped in a container(12) and to burn every kind firewood or the garbage; a guide means of heat of hire(60) to be equipped in a container(12) and connected with a combustor(30), and to circulate and discharge heat of hire to the outside of a container(12); a supply pipe of the heated water(56) to supply the heated water from a container(12) to a heating location; an inflow pipe of the heated water(52) to inflow the heated water from a heated location to a container(12); a supply pipe of warm water(58) to supply the water heated to the wanted temperature in a container(12) to the spending location of warm water; a controller to be equipped on the outside of a container(12) and to control the whole working; an air blower(31) to be equipped on the outside of the bottom of a container(12) and to circulate air forcibly into a combustor(30).

Description

Wood boiler

The present invention relates to a wood boiler, and in particular, can be used as a fuel as well as various wood as well as garbage from the home, there is little smoke during operation, there is no soot or water, and a high heat efficiency wood boiler.

In general, oil boilers or gas boilers are more thermally efficient and easier to use than wood boilers. However, in recent years, since the initial supply cost of energy, in particular oil or gas, has increased and economic conditions have become difficult, there is a problem in the economics of oil boilers or gas boilers, especially in rural or mountain wallpaper where economic conditions are insignificant. Installation and operation is more difficult.

Therefore, interest in wood boilers has recently increased. Wood boilers are economical because they use wood as a fuel, which is cheaper than other forms of energy, and are less expensive to manufacture and install because they are used on a relatively small scale. Various efforts have been made to further improve the performance of wood boilers having these advantages.

As part of such efforts, wooden boilers have been developed in which a single combustion chamber and flue are built and a water tank is installed around the combustion chamber. However, in such a conventional wood boiler, the combustion of various woods used as fuel is not completed, and a lot of smoke and soot are generated. In addition, condensation or water formation occurs in the combustion chamber and the flue, and at the same time the fuel is burned in a single combustion chamber, and at the same time, the heat of combustion is generated for heating.

The present invention has been made to solve the conventional problems as described above, the object of the present invention can be completely burned by using not only various wood but also garbage from the home as a fuel, soot or water phenomena does not occur It is to provide an economical wood boiler with high thermal efficiency.

1 is a perspective view of a wood boiler according to a preferred embodiment of the present invention,

2 is a front view of a wood boiler according to a preferred embodiment of the present invention,

3 is a right side view of a wood boiler according to a preferred embodiment of the present invention;

4A is a cross-sectional view taken along the line IV-IV of FIG. 1, and

4B is a cross-sectional view taken along the line VV of FIG. 1.

〈Description of the symbols for the main parts of the drawings〉

10: wood boiler 12: container

25: first dust collection day 26: the first dust collection lever

26c: first dust collecting plate 26d: second dust collecting hole

28: second dust collecting lever 28a: second dust collecting plate

30 combustion chamber 31 blower

38: first firearm guide 40: control box

42: oil sump 43: automatic ignition

44: auto ignition bulb 46: manual ignition bulb

52: heating water inlet pipe 54: direct water pipe

56: heating water supply pipe 58: hot water supply pipe

60: firearms guidance room 61: the first dust collector

62: rotating plate 63: second dust collecting blade

64: firearms guide 66: second firearms guide

70: firearm discharge chamber 72: third firearms guide

74: dust collecting network 76: third dust collection port

80: hot water circulation pipe

In order to achieve the above object, the present invention,

A container defining a space for temporarily holding water to be heated;

A combustion chamber disposed in the container and configured to receive and burn garbage from various trees or homes as fuel;

A firearm guide means disposed in the container so as to communicate with the combustion chamber, and configured to circulate the fire generated by the combustion of the fuel in the combustion chamber in the container and to discharge the firearm to the outside of the container;

A heating water supply pipe extending from the inside of the container to the outside of the container and supplying heating water temporarily held in the container and warmed to a desired temperature by the firearm;

A heating water inlet pipe extending from the outside of the container to the inside of the container and introducing water returning from the heating place into the container;

Hot water supply means for supplying hot water to the container and circulating the hot water to supply hot water to a hot water consumption place outside the container; And

It is provided on the outside of the container, and provides a wood boiler including control means for controlling the overall operation.

The wood boiler further includes a blower installed outside the bottom of the container to provide forced ventilation into the combustion chamber.

In the wood boiler according to the present invention having the above-described configuration, not only various trees but also garbage from the home are used as fuel in the combustion chamber to completely burn the fuel, and the heat of combustion coming out is effectively used for heating.

Hereinafter, a wooden boiler according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view of a wooden boiler according to a preferred embodiment of the present invention, Figure 2 is a front view of a wooden boiler according to a preferred embodiment of the present invention, Figure 3 is a wooden boiler according to a preferred embodiment of the present invention Right side view of the.

1 to 3, the wooden boiler 10 according to a preferred embodiment of the present invention supports a cylindrical container 12 and a cylindrical container 12 which perform a function of a water tank for temporarily holding heating water. And a support plate 14 and a leg 16 formed integrally with each other. Between the legs 16 a blower 31 and a recycling bin 18 are arranged.

On the upper surface of the container 12, a circular combustion chamber cover 20 is provided. The combustion chamber cover 20 is mounted on the top surface of the container 12 by a hinge 22 so as to open and close a circular combustion chamber 30 (see FIG. 4A) installed vertically in the container 12 as needed. In addition, an exhaust port 24, a first dust collecting lever 26, a second dust collecting lever 28, and an overflow pipe 27 are formed on the upper surface of the container 12 to protrude upward. The overflow pipe 27 is a discharge pipe of water for adjusting the amount of water contained in the container 12.

The front surface of the container 12, the thermometer 29, the control box 40 and the oil barrel 42 is disposed. The thermometer 29 receives a temperature sensing signal from a temperature sensor (not shown) built in the control box 40 and visually represents the temperature of the water to be accommodated in the container 12 to be heated. The control box 40 is for controlling the overall operation of the wood boiler 10, the temperature setting switch, the operation switch, the fuse is disposed. On the other hand, the oil injection port 41b is formed in the upper portion of the oil barrel 42. Except for supplying oil into the sump 42, the oil inlet 41b is closed by the first cap 41a.

Under the sump 42, an automatic ignition port 44 and a manual ignition port 46 are formed. An auto ignition device 43 is disposed in the auto ignition port 44. The oil supply pipe 45 extending from the oil container 42 is connected to the automatic ignition device 43. When the consumer operates the control box 40 to operate the wood boiler 10, the automatic ignition device 43 receives an operation signal from the control box 40 and the various types of the combustion chamber 30 (see FIG. 4A). Automatically ignites fuel such as wood or household waste.

The manual ignition port 46 is normally closed by the second plug 47. The manual ignition port 46 is installed in case the automatic ignition device 43 does not operate, and allows the consumer to manually ignite fuel such as various wood or household waste in the combustion chamber 30. . That is, the consumer opens the second stopper 47 and lights a piece of paper or wood to ignite the manual ignition port 46 so as to directly ignite the fuel in the combustion chamber 30.

A drain 50 is provided below the right side of the container 12. The drain 50 extends from the bottom of the container 12 and is used to drain out the water filled in the container 12 when cleaning the inside of the container 12. The heating water inlet pipe 52 and the direct water pipe 54 are installed above the drain 50. The heating water inflow pipe 52 serves as a passage for the heating water returned from the heating place to the container 12. To this end, the heating water inlet pipe 52 is fluidly connected to the heating place, and a circulation pump (not shown) is installed in the middle of the heating water inlet pipe 52. The circulation pump is driven by an electric motor (not shown) to draw the heating water from the heating place to increase the pressure of the heating water and circulate it toward the wood boiler 10.

The direct pipe 54 extends from a water source outside the wood boiler 10 such as tap water, enters the wood boiler 10, and provides fresh water into the container 12. The water supplied through the water pipe 54 is filled in the container 12.

The heating water supply pipe 56 and the hot water supply pipe 58 are installed on the upper right side of the container 12. The heating water supply pipe 56 is for recycling the heating water covered in the inside of the wood boiler 10 to the heating place, and extends from the container 12 to the outside. The hot water supply pipe 58 is introduced into the container 12 through the direct water pipe 54 to supply hot water covered while circulating the inside of the wood boiler 10 to the hot water pipe in the home.

4A is a cross-sectional view taken along the line IV-IV of FIG. 1, and FIG. 4B is a cross-sectional view taken along the line V-V of FIG. 1.

First, referring to FIG. 4A, the container 12 defines a space S for temporarily holding water to be heated, and the space S enters water from a heating place through the heating water inlet pipe 52. This will fill up to a certain height. In the container 12, a combustion chamber 30, a fire guide chamber 60, and a fire discharge chamber 70 are vertically installed. The hot water circulation pipe 80 is disposed around the fire guide chamber 60, and the hot water circulation pipe 80 penetrates the water pipe 54 installed through one lower portion of the container 12 and an upper portion of one side of the container 12. It extends between the hot water supply pipes 58 are installed. That is, one end of the hot water circulation pipe 80 is connected to the water straight pipe 54, and the other end of the hot water circulation pipe 80 is connected to the hot water supply pipe 58. Therefore, the hot water circulation pipe 80 is formed integrally with the direct water pipe 54 and the hot water supply pipe 58.

The combustion chamber 30 is configured to receive and burn fuel such as garbage from various trees or homes, and is made of stainless steel. In the lower part of the combustion chamber 30, the auto ignition hole 44 and the manual ignition hole 46 formed through the lower part of the container 12 extend through the lower part of the wall 32 of the combustion chamber 30. The auto ignition port 44 is provided with an auto ignition device 43 and two light sensors (not shown) as mentioned above. The optical sensor detects the intensity of the spark ignited by an ignition coil (not shown) provided at the tip of the automatic ignition device 43, and transmits the detection signal to the control box 40.

In addition, a blower 34 is provided at an outer radial lower portion of the combustion chamber 30. The blower 34 communicates with a plurality of blowers 36 formed through the lower portion of the wall 32 of the combustion chamber 30 and is provided outside the bottom of the container 12 at the bottom of the combustion chamber 30. It becomes the movement path of the wind from).

The first firearm guide tube 38 extends between the lower portion of the combustion chamber 30 and the lower portion of the firearm guidance chamber 60. The first firearm guide tube 38 performs a function of guiding the firearm generated as the fuel is burned in the combustion chamber 30 to the firearm guide chamber 60. The first firearm guide tube 38 is arranged with an optical sensor 39 for detecting the intensity of the firearm passing through the first firearm guide tube 38. The detection signal detected by the light sensor 39 is transmitted to the control box 40 installed in the front of the container 12.

On the other hand, in the fire guide chamber 60, the 1st dust collecting lever 26 integrally formed and the rotating plate 62 of rectangular shape are provided. Semicircular firearm guide plates 64 are formed on both upper and lower portions of the rotating plate 62 to protrude to both sides of the rotating plate 62. The firearm guide plate 64 is introduced into the firearm guide chamber 60 from the combustion chamber 30 through the first firearm guide tube 38 and rises through the firearm guide chamber 60 at both centers at the center of the firearm guide chamber 60. It is to spread with. Preferably, the firearm guide plate 64 has a shape in which the center portion is recessed to help spread the firearm.

The upper portion 26a of the first dust collecting lever 26 is welded on the upper surface of the rotating plate 62, and the lower portion 26b of the first dust collecting lever 26 is welded on the bottom surface of the rotating plate 62. The free end of the upper portion 26a of the first dust collecting lever 26 is exposed to the outside beyond the upper portion of the container 12. A disk-shaped first dust collecting plate 26c is attached to the free end of the lower portion 26b of the first dust collecting lever 26. A semicircular second dust collecting port 26d penetrates through the first dust collecting plate 26c. The second dust collector 26d has a size corresponding to the semi-circular first dust collector 61 formed through the bottom of the fire guide chamber 60.

On the lower surface of the first dust collecting plate 26c, the first dust collecting blades 25 protrude downward and are attached. When the 1st dust collecting blade 25 rotates the 1st dust collecting lever 26 to clean the inside of the fire guide chamber 60, the 1st dust collecting blade 25 collects the dust and the ash accumulated on the bottom surface of the fire guide chamber 60, etc. Sweep to the dust collector 61 to discharge. As a result, dust, ash, and the like pass through the first dust collecting port 61 and are introduced into the re-collection 18.

On the other hand, on the inner surface of the fire guide chamber 60 near the first dust collecting plate 26c at a position higher than the first dust collecting plate 26c, the second dust collecting blade 63 protrudes radially inward. The second dust collecting blade 63 has a size and a shape corresponding to the first dust collecting blade 25 of the first dust collecting lever 26. When the second dust collecting blade 63 rotates the first dust collecting lever 26 to clean the inside of the fire guide chamber 60, the second dust collecting blade 63 removes dust or ash accumulated on the upper surface of the first dust collecting plate 26c. 1 It sweeps toward the 2nd dust collector 26d of the dust collecting plate 26c, and is discharged. As a result, dust or ash passes through the second dust collecting hole 26d and the first dust collecting hole 61 which are vertically aligned by the rotation of the first dust collecting lever 26 and the first dust collecting plate 26c formed integrally. Into the re-collection 18.

Referring to FIG. 4B, a second firearm guide tube 66 extends between the upper portion of the firearm guide chamber 60 and the upper portion of the firearm discharge chamber 70. The second firearm guide tube 66 guides the firearm that has passed through the firearm guide chamber 60 into the firearm discharge chamber 70. The third firearm guide tube 72 is vertically disposed in the firearm discharge chamber 70. The dust collecting network 74 is installed in the lower part of the 3rd fire guide pipe 72. The dust collecting network 74 is installed to extend downwardly in order to increase the contact area with the firearm. An upper portion of the third fire guide tube 72 communicates with the exhaust port 24.

In addition, the second dust collecting lever 28 is vertically disposed in the fire discharge chamber 70. The upper part of the second dust collecting lever 28 is exposed to the outside past the upper part of the container 12. A disk-shaped second dust collecting plate 28a is attached to the lower portion of the first dust collecting lever 26. The second dust collecting plate 28a opens and closes the third dust collecting hole 76 formed through the bottom of the fire discharge chamber 70 according to the vertical movement of the second dust collecting lever 28. That is, when the second dust collecting lever 28 is lifted up to clean the inside of the fire discharge chamber 70, the second dust collecting plate 28a is lifted up, and as a result, the second dust collecting plate 28a is accumulated on the bottom surface of the fire discharge chamber 70. Dust or ash is discharged downward through the third dust collecting hole 76 and is introduced into the re-collection 18.

Hereinafter, the operation of the wood boiler 10 according to the preferred embodiment of the present invention having the above configuration will be briefly described.

First, when the consumer operates the automatic ignition device 43 by operating the control box 40 to operate the wood boiler 10 in a state where fuel such as various wood or household waste is charged in the combustion chamber 30, An ignition coil (not shown) of the ignition device 43 is preheated. At this time, a certain amount of oil is supplied from the sump 42 to the ignition coil of the automatic ignition device 43 through the oil supply pipe 45 extending between the automatic ignition device 43 and the sump 42. As a result, the ignition coil fires a spark toward the fuel charged in the combustion chamber 30.

Then, the fuel in the combustion chamber 30 starts to burn. At this time, the blower 31 installed in the outer lower portion of the container 12 is operated to blow air into the combustion chamber 30 through the blower 34 and the blower 36 to support combustion of fuel. As a result, the fuel burns out completely. The fire generated by the combustion of fuel in the combustion chamber 30 is introduced into the fire guide chamber 60 through a first fire guide tube 38 extending between the combustion chamber 30 and the fire guide chamber 60. The firearms introduced into the firearm guide chamber 60 flow from the inner bottom of the firearm guide chamber 60 to the top. At this time, the firearm is spread from the center to the periphery by the fire guide plate 64 installed to guide the firearm to the periphery of the inside of the firearm guide room.

The spreading fire effectively heats the hot water circulation pipe 80 installed at the outer periphery of the fire guide room 60, and extends the second fire guide pipe 66 extending between the fire guide room 60 and the fire discharge chamber 70. It is introduced into the fire discharge chamber 70 through. The firearm introduced into the firearm discharge chamber 70 is guided into the third firearm guide tube 72 through the dust collecting network 74 installed under the third firearm guide tube 72, and then the third firearm guide tube 72. And through the exhaust port 24 to the outside.

When the wood boiler 10 operates as described above, the heating water filled around the combustion chamber 30, the fire guidance chamber 60, and the fire discharge chamber 70 is heated to a constant temperature and then heated to the heating place through the heating water supply pipe 56. Is sent. In addition, hot water heated while passing through the hot water circulation pipe 80 disposed around the fire guide chamber 60 is provided to the hot water consumption place through the hot water supply pipe 58.

On the other hand, dust or ash contained in the fire can be accumulated on the inner bottom of the fire guide chamber 60 and the fire discharge chamber (70). In this case, to clean the fire guide chamber 60, the free end of the first dust collecting lever 26 exposed to the outside of the upper portion of the container 12 past the fire guide chamber 60 is rotated. Then, the first dust collecting plate 26c attached to the lower portion of the first dust collecting lever 26 is rotated, and as a result, the second dust collecting hole 26d and the bottom of the fire guide chamber 60 formed in the first dust collecting plate 26c are rotated. Dust, ash, etc. are discharged | emitted through the 1st dust collector 61 formed in the inside. At this time, since the first dust collecting blade 25 of the first dust collecting plate 26c moves while sweeping dust or ash accumulated on the bottom surface of the fire collecting chamber 60, the bottom of the fire collecting chamber 60 is cleaned cleanly. .

In addition, since the second dust collecting blade 63 formed by projecting radially inward on the inner surface of the fire guide chamber 60 sweeps the upper surface of the first dust collecting plate 26c which is rotating, the upper surface of the first dust collecting plate 26c. The dust and ash accumulated on the top pass through the second dust collecting port 26d and the first dust collecting port 61 which are vertically aligned with each other by the rotation of the first dust collecting plate 26c. The dust or ash discharged in this way is put into the collection box 18 located between the legs 16 of the container 12 and collected.

On the other hand, in order to clean the fire discharge chamber 70, the free end of the second dust collecting lever 28 exposed to the outside of the upper portion of the container 12 past the fire discharge chamber 70 is lifted upward. Then, the second dust collecting plate 28a blocking the third dust collecting hole 76 formed through the bottom of the fire discharge chamber 70 is lifted to open the third dust collecting hole 76. As a result, dust or ash accumulated on the bottom of the fire discharge chamber 70 falls through the third dust collecting hole 76 and is collected and put into the re-collection 18. As a result, the bottom of the fire discharge chamber 70 is cleaned cleanly.

As described above, in the wood boiler 10 according to the present invention, since not only various trees but also fuel such as garbage from home can be completely burned in the combustion chamber 30, smoke and soot are almost generated during operation. There is no watering. In addition, since it has an internal structure that can effectively use the heat generated during combustion, the thermal efficiency is high and the heating effect is excellent. In addition, fuel costs are low and installation is easy.

Although the above has been described with reference to a preferred embodiment of the present invention, those skilled in the art will be variously modified and changed within the scope of the invention without departing from the spirit and scope of the invention described in the claims below I can understand that you can.

Claims (11)

A container defining a space for temporarily holding water to be heated; A combustion chamber disposed in the container and configured to receive and burn garbage from various trees or homes as fuel; A firearm guide means disposed in the container so as to communicate with the combustion chamber, and configured to circulate the fire generated by the combustion of the fuel in the combustion chamber in the container and to discharge the firearm to the outside of the container; A heating water supply pipe extending from the inside of the container to the outside of the container and supplying heating water temporarily held in the container and warmed to a desired temperature by the firearm; A heating water inlet pipe extending from the outside of the container to the inside of the container and introducing water returning from the heating place into the container; Hot water supply means for supplying hot water to the container and circulating the hot water to supply hot water to a hot water consumption place outside the container; And Wood boiler installed on the outside of the container, including a control means for controlling the overall operation. The wood boiler according to claim 1, wherein the wood boiler further comprises a blower installed outside the bottom of the container to provide forced ventilation into the combustion chamber. The wood boiler according to claim 2, wherein a blower path communicating with the blower is provided at an outer radial lower portion of the combustion chamber, and a plurality of blowers penetrate through a lower part of a wall of the combustion chamber adjacent to the blower. The method of claim 1, wherein the container, A manual ignition port and an automatic ignition port formed through the lower portion of the container and the lower wall of the combustion chamber so as to communicate with the combustion chamber; A circular combustion chamber cover mounted to the upper portion of the container by a hinge to open and close the open upper portion of the combustion chamber; An exhaust port formed through the upper portion of the container to discharge the firearm to the outside of the container; An overflow pipe installed vertically through the upper portion of the container and configured to adjust an amount of water accommodated in the container; A drain installed through the lower side of the container and discharging water remaining in the container when cleaning the inside of the container; A thermometer mounted on the front portion of the container, the thermometer for visually indicating the temperature of the water contained in the container; And And a sump mounted on the front side of the container, the sump storing oil supplied into the combustion chamber when the fuel is combusted in the combustion chamber. The automatic ignition device according to claim 4, wherein an automatic ignition device having an ignition coil and at least one first optical sensor for sensing an ignition temperature of the ignition coil are installed in the automatic ignition port, and between the automatic ignition device and the oil container. The wood boiler, characterized in that the oil supply pipe is extended. According to claim 1, wherein the fire guide means, Disposed vertically in the container so as to communicate with the combustion chamber, a semi-circular fire guide plate protruding from both sides of the rotary plate at a top and bottom of the rectangular plate, and formed integrally with the rotary plate and rotating together with the rotary plate. A firearm guidance room having a first dust collecting means; A third firearm guide tube vertically disposed in the container so as to communicate with the firearm guide chamber, a dust collecting network installed under the third firearm guide tube, and a second dust collector disposed vertically outside the third firearm guide tube; A firearm discharge chamber having means; A first firearm guide tube extending between a lower portion of the combustion chamber and a lower portion of the firearm guide chamber, for guiding the firearm generated as the fuel is burned in the combustion chamber to the firearm guide chamber; And And a second firearm guide tube extending between an upper portion of the firearm guide chamber and an upper portion of the firearm discharge chamber and for guiding the firearm from the firearm guide chamber to the firearm discharge chamber. The semi-circular first dust collecting port is formed through the bottom of the fire guide chamber, wherein the fire guide plate has a recessed shape in the middle thereof, and the first dust collecting means is integrally formed with the rotating plate. A first dust collecting lever, an upper portion of the first dust collecting lever is welded on an upper surface of the rotating plate, and a free end of the upper portion of the first dust collecting lever is exposed to the outside past the upper portion of the container, A lower portion of the first dust collecting lever is welded on a bottom surface of the rotating plate, and a free end portion of the lower portion of the first dust collecting lever protrudes downward from a disk-shaped first dust collecting plate and a lower surface of the first dust collecting plate. A first dust collecting blade is attached, and a second dust collecting blade is mounted on the inner surface of the fire guide chamber near the first dust collecting plate at a position higher than the first dust collecting plate. Wood boiler, characterized in that, which is installed so as to protrude inward spirit. The dust collector of claim 7, wherein the first dust collecting plate has a second dust collecting hole having a size and a shape corresponding to the first dust collecting hole, and the first dust collecting blade is configured to clean the interior of the fire guide chamber. In the case of rotating the first dust collecting lever, the ash or dust accumulated on the bottom surface of the fire guide chamber is discharged by sweeping toward the first dust collecting port, and the second dust collecting blade rotates the first dust collecting lever, The wood boiler characterized in that the dust and ash accumulated on the upper surface of the rotating first dust collecting plate sweeps toward the second dust collecting outlet. According to claim 7, wherein the dust collecting network is formed in the lower side to increase the contact area with the firearm supplied from the fire guide chamber, the bottom of the fire discharge chamber is formed through the circular third dust collecting port, The second dust collecting means includes a second dust collecting lever disposed vertically in the fire discharge chamber and a circular second dust collecting plate attached to a lower portion of the second dust collecting lever, and an upper portion of the second dust collecting lever is disposed in the container. The wood boiler is exposed to the outside past the upper portion, the second dust collecting plate opens and closes the third dust collecting in accordance with the vertical movement of the second dust collecting lever. 8. The wood boiler according to claim 7, wherein the first firearm guide tube is provided with a second optical sensor for detecting the intensity of the firearm passing through the first firearm guide tube. According to claim 1, wherein the hot water supply means, A direct pipe for supplying the direct water into the container from a water supply outside the container; A hot water circulation pipe disposed in the container and having one end connected to the direct pipe, the hot water circulation pipe disposed around the fire guide chamber in the container to warm the direct water; And And a hot water pipe connected to the other end of the hot water circulation pipe and configured to supply hot water heated while circulating inside the container to a hot water consumption place.