KR100918609B1 - Boiler - Google Patents

Abstract

PURPOSE: A boiler is provided to improve spatial utilization rate by forming a water heat exchanger having a coil form on a space part formed inside a water tank. CONSTITUTION: Combustion gas generated from a burner(110) equipped in a boiler body(100) is ejected to the outside via a hot water exchanger couple on the lower part of a water tank. The hot water passed through the hot-water heat exchanger passes through a floor heat exchanger and a cyclic motor and flows into the water tank again. The cooling water is circulated through the hot-water heat exchanger. In the water tank, the external periphery portion of a toroidal panel is welded on the both sides of a hollow cylinder body. The both sides of the hollow cylinder body are inserted into and welded on the internal periphery portion of the toroidal panel and a space part is formed between the internal periphery side of the cylinder body and the external periphery side of a hollow body. A water heat exchanger is formed at the space part and the inlet and outlet of the water heat exchanger pass through the toroidal panel and are exposed to outside. A supplement water supply part(260) in which a water level sensor is formed on the upper part of a cylinder body is coupled.

Description

Boiler {Boiler}

The present invention relates to a boiler, and in particular, the combustion gas generated in the burner is made to be heat exchanged smoothly in the process of being discharged to the outside via the heating water heat exchanger and the lower part of the water tank, thereby increasing the heating efficiency The direct heat exchanger having a coil shape is provided in the space formed inside the water tank, so that a small space can be efficiently used and hot water with little temperature change can be easily used. Combined parts to allow the roasting section to be selectively operated, so that the chicken or duck can be grilled at the same time while using the heating and heating water.

Generally, a boiler is used to use heating and hot water, and there are oil boilers, gas boilers, regenerative boilers and firewood boilers using midnight electric power (hereinafter, referred to as "boilers") according to energy sources.

In such a boiler, the heating water and the direct water are heat-exchanged by the heating heat exchanger and the direct heat exchanger in the process of dissipating heat generated from the heat source to the outside, and the heat-exchanged heating water is circulated in the heating pipe and the heating pipe. The pump is circulated to the heating pipe embedded in the floor to heat the floor.

At the same time, the hot water heat exchanged by the direct water heat exchanger may use hot water through a hot water pipe and a faucet coupled to the hot water pipe.

However, since the heating heat exchanger and the direct heat exchanger are directly exposed to the heat generated from the heat source, when the hot water is excessively used during the heat exchange through the heating heat exchanger, the heat exchange rate of the heating heat exchanger is lowered, thereby lowering the heating efficiency. there was.

In addition, since the direct heat exchanger is directly exposed to the heat generated from the heat source, there is another problem that the temperature of the hot water is too hot or cold.

And such a boiler had a problem that cannot use other functions in addition to the function of using only heating and hot water.

The present invention was created to solve such a problem as to delay the discharge of the combustion gas to maintain the combustion gas in the boiler for a certain time to increase the heat exchange rate to increase the heating efficiency, and also the water tank The purpose of the present invention is to provide a boiler that can efficiently use hot water with a constant temperature while increasing the space utilization rate.

The present invention is the combustion gas generated from the burner 110 provided in the boiler body 100 is discharged to the outside via the heating water heat exchanger 300 coupled to the lower portion of the water tank 200, the heating water The heating water passing through the heat exchanger 300 is re-introduced into the water tank 200 via the bottom heat exchanger 400 and the circulation motor 410, and the re-injected cooling water is supplied to the heating water heat exchanger 300. In the boiler configured to be circulated through, the water tank 200 is fitted to the outer periphery of the donut-shaped panel 230 to be opposed to each other on both sides of the hollow cylindrical body 210 is coupled by a welding joint, the donut type Both sides of the hollow body 220 are fitted to the inner circumferential edge of the panel 230 and are coupled by welding to form a space 240 between the inner circumferential surface of the cylindrical body 210 and the outer circumferential surface of the hollow body 220. The direct heat exchanger 250 is provided in the unit 240 in the form of a coil. The inlet side and the outlet side of the heat exchanger 250 are exposed to the outside through the toroidal panel 230, and the supplemental water supply unit 260 having the water level sensor 261 on the upper portion of the cylindrical body 210 is Is coupled, the heating water heat exchanger 300 is a heat exchange pipe 320 is repeated in a zigzag form between the support plates 310, 310 'one side is connected to the water tank 200, the other side It is connected to the bottom heat exchanger 400, characterized in that the upper portion of the support plate 310, 310 'is spaced apart from the lower portion of the water tank 200.

The present invention is to increase the heat exchange rate by increasing the heat exchange rate to ensure that the combustion gas stays inside the boiler for a predetermined time during the combustion gas is discharged via the heating water heat exchanger and the lower portion of the water tank to obtain an effect that the heating efficiency can be increased. Can be.

In addition, by providing a direct water heat exchanger having a coil shape in a space formed inside the water tank, it is possible to obtain a further effect of using a small space efficiently and easily using hot water having a constant temperature.

On the other hand, when combined with a separate roaster in the boiler, the combined roaster is selectively operated to obtain a further effect that the chicken or duck can be baked at the same time while using the heating and heating water.

An embodiment of the present invention will be described with reference to the accompanying drawings.

1 is a perspective view of a boiler according to the present invention, Figure 2 is a rear perspective view of the boiler according to the present invention, Figure 3 is an exemplary view showing the configuration of the boiler according to the present invention, Figure 4 is a boiler according to the present invention Figure 5 is a longitudinal cross-sectional view showing the configuration of, Figure 5 is a longitudinal cross-sectional view showing the internal configuration of the roasting portion is coupled to the boiler according to the invention, Figure 6 shows the internal configuration of the roasting portion is coupled to the boiler according to the invention One is a longitudinal cross-sectional view, Figure 7 is a longitudinal cross-sectional view showing the internal configuration of the roasting unit is coupled to the boiler according to the invention, Figure 8 shows a configuration of a horizontal door portion provided in the boiler according to the invention An illustration of separation.

As illustrated in FIGS. 1 to 8, the boiler according to the present invention is a heating water heat exchanger in which combustion gas generated from a burner 110 provided inside the boiler body 100 is provided in the boiler body 100 ( After passing through 300, the first discharge passage 120a and the second discharge passage described later are delayed for a predetermined time in the process of passing through the lower portion of the water tank 200 coupled to the upper portion of the heating water heat exchanger 300. It is configured to be discharged to the outside through 120b and the combustion gas discharge pipe (120c).

The heating water passing through the heating water heat exchange part 300 is re-introduced into the water tank 200 after passing through the bottom heat exchange part 400 by the circulation motor 410, and the re-injected cooling water is the heating water. It is configured to be continuously circulated through the heat exchange unit (300).

The water tank 200 is a supplementary water supply unit 260 is coupled to the upper portion to ensure that a certain amount of water is always filled into the inside through the water level sensor 261 to the donut-shaped panel ( The outer periphery of the 230 is fitted to each other is coupled to the weld joint, the inner edge of the donut-shaped panel 230 coupled to both sides of the hollow cylindrical body 210 by the weld joint on both sides of the hollow body 220 The spaced portion 240 having a predetermined space is formed between the inner circumferential surface of the cylindrical body 210 and the outer circumferential surface of the hollow body 220 by being sandwiched by a welded joint.
The hollow cylindrical body is formed in the upper portion of the cylindrical body 210 to be spaced apart between the upper portion of the heating water heat exchanger 300 and the upper portion of the heating water heat exchanger 300 and the lower portion of the water tank 200 to be described later. A combustion gas diffusion passage 270 having a form linked along the outer circumferential edge of the 210 is formed so that a portion of the combustion gas passing through the heating water heat exchanger 300 passes through the diffusion passage 270 to the first discharge passage. It is configured to be discharged through the 120a, the second discharge passage (120b) and the combustion gas discharge pipe (120c). At this time, the replenishment water supply unit 260 having the water level sensor 261 provided to the outside of the water tank 200 is a combustion gas diffusion passage (262) by a protection tube 262 having a form passing through the combustion gas diffusion passage 270 ( 270) is maintained so that it is not affected by the high temperature combustion gas passing through the inside. That is, when directly affected by the high temperature combustion gas, it is possible to prevent the water tank 200 from being unable to supply water due to damage due to overheating of the water level sensor 261.

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The space part 240 is provided with a direct water heat exchanger 250, in which a low temperature direct water is supplied from the outside, in a coil shape, and an inlet side and a discharge side of the direct water heat exchanger 250 are donut-shaped panels 230. It is configured to pass through and be exposed to the outside.

The direct heat exchange part 250 has a portion inserted into the space part 240 through the inflow side at a predetermined interval from the outer peripheral surface of the hollow body 200 in the space between the cylindrical body 210 and the hollow body 220. And the wound state is maintained to have a coil form from one side of the hollow body 220 to the other side, the direct heat exchanger 250 wound to the other side has a diameter less than the diameter of the coil wound and the other side toward one side It is wound in the form of a coil, the end of one side is coupled to the hot water discharge faucet not shown through the donut-shaped panel 230, the inlet side of the direct heat exchanger 250 is connected to the faucet for direct water supply not shown It is configured to be.

The heating water heat exchanger 300 is installed between the burner 110 and the water tank 200, and the heat exchange pipe 320 is repeatedly coupled in a zigzag form between the support plates 310 and 310 ′ on both sides. One side of the heat exchange pipe 320 is connected to the water tank 200, the other side is configured to be connected to the bottom heat exchange unit (400).

The upper portions of the support plates 310 and 310 ′ are spaced apart from the lower portion of the water tank 200 at a predetermined interval so that the high temperature combustion gas burned by the burner 110 exchanges heat of the heating water heat exchanger 300. After passing through the pipe 320 and hit the lower portion of the water tank 200 is turned so as to be transported along the first discharge passage (120a).

Between the support plates 310 and 310 ′ of the heating water heat exchanger 300, a separation plate 330 having a vertical shape is interposed so that the heating water heat exchanger 200 is divided into left and right sides. It is possible to prevent the rising movement path of the high temperature combustion gas generated in the burner 110 to pass through the heat exchange pipe 320 of the heating water heat exchanger 300 to be changed. In other words, the hot combustion gas is transferred to the upper portion without the heat being shifted to the left or to the right.

The upper portion of the heating water heat exchanger 300 is formed to be vertical to the first discharge passage (120a) toward the bottom, parallel to the first discharge passage (120a) in the lower portion of the first discharge passage (120a). The second discharge passage 120b is provided to face upward in one state, and the combustion gas discharge pipe 120c is coupled to the second discharge passage 120b.

On the other hand, the front door of the boiler body 100 is coupled to the horizontal door 500 is coupled to the inner lower portion of the burner 110 provided to generate a high temperature heat while the heat source supplied from the outside is combusted, The front door 101, that is, the lower portion of the burner 110, the door 101 is provided to open the door 101 so that the horizontal door 500 can be unfolded or folded, and at the same time It is composed so that it can be put out and burned or the ashes burned by firewood can be taken out and discharged.

The vertical door part 600 is coupled to the boiler body 100 that is matched with the height of the horizontal door part 500, and the roasting part is formed on the boiler body 100 including the vertical door part 600. 700 is configured to be coupled.

The vertical door part 600 is divided into left and right vertical doors 600a and 600b so that one side is hinged to the boiler body 100, and the other side of the left and right vertical doors 600a and 600b is opposed to each other. The handle 610 is configured to be coupled to.

The horizontal door part 500 is located in the lower side of the boiler body 100 in which the burner 110 is installed, so that the upper and lower spaces of the boiler body 100 are closed, thereby using the burner 110 only. To operate or to put only the firewood in the lower space of the boiler body 100 is to be provided with a function that is used separately.

The horizontal door 500 having such a function is separated into left and right horizontal doors 500a and 500b so that one side is hinged shaft 510 on both inner walls of the boiler body 100 positioned below the burner 110. The other sides of the left and right horizontal doors 500a and 500b which are fixed and fixed to the hinge shaft 510 are formed to engage with each other in an uneven form.

The support shafts 530a and 520b are formed to have the centers coincident with the portions engaged in the uneven form so that the support shafts 530 penetrate through the support grooves 520a and 520b. It is.

The roasting part 700 is coupled to the hinge door 715 at the inlet side of the roasting space 710 formed therein, and the oil pan 720 is detachably coupled to the lower portion of the roasting space 710. It is configured to be.

An ignition part 730 composed of an air supply part 730a and a combustion part 730b is coupled to a lower portion of the outlet side of the roasting space 710, and an exhaust fan (top) of the inlet side of the roasting space 710. The odor emission unit 740 having the 741 is configured to be coupled.

A plurality of roasting bars 750 are horizontally installed in the roasting space unit 710, and the roasting bars 750 are configured to be rotated at a constant speed by a driving unit 760 installed outside.

The drive unit 760 is coupled to the reduction gear 763 by the first chain 762 to the drive motor 761 and the first gear 765 is coupled to the reduction shaft 764 of the reduction gear 763. The second gear 767 is coupled to the first gear 765 by a second chain 766.

The third gear 769 is configured to be coupled to the shaft 768 of the second gear 767. The reduction shaft 764 and the shaft 768 are coupled to the boiler body 100 by the rotary support 763a so that the driving force of the driving motor 761 can be simultaneously transmitted.

Polygonal grooves 763b are formed at the ends of the reduction shaft 764 and the shaft 768 so that the other side of the bar 750 corresponding to the handle 752 is detachably coupled.

The roasting bar 750 is a long end having a polygonal cross section in order to insert the chicken or duck and at the same time the chicken or duck inserted in the roasting bar 750 can be rotated like the roasting bar 750. The circular portion 751 is formed in the portion, the handle portion 752 is integrally formed in the circular portion 751, the inclined support groove formed in the grill portion 780 (circular portion 751) It is configured to be pushed by the hinged door 715 which is inserted into the 781 and closed.

The air supply part 730a has a predetermined length at the discharge port of the blower 730a-1 installed to the outside of the guiding part 700 and penetrates the guiding part body 780 to be inserted into the guiding part body 780. One side of the 730a-2 is coupled, an air nozzle 730a having a plurality of first through holes 730a-3 formed on the other side of the pipe 730a-2 inserted into the guiding portion 700. -4) is coupled to the air is blown through the blower (730a-1) to the air nozzle (730a-2) is configured.

The combustion unit 730b is coupled to a gas injection nozzle 730b-3 having a plurality of second through holes 730b-2 formed at the end of the gas supply hose 730b-1 penetrating the roasting unit body 780. The gas injection nozzle 730b-3 is configured to be coupled to an upper portion of the air nozzle 730a-4 to be joined by welding, bolts, or other joints. Reference numeral 102 in the figure is a confirmation phrase.

Boiler having such a configuration, first, after opening the door 101 provided on the front of the boiler body 100, the lower horizontal door (500a) and the lower end of the superior horizontal door (500b) located in the vertical direction At the same time, the left horizontal door 500a and the even horizontal door 500b rotate about the hinge shaft 510 to move upward, while the horizontal shape is maintained, and the portions to be opposed are engaged in the uneven shape. The support shaft 530 is inserted through the support grooves 520a and 520b in a state such that the horizontal door part 500 separates the lower space of the boiler body 100.

In this state, the burner 110 is ignited, and at the same time, the hot combustion gas generated from the burner 110 is heated in a process of moving upward through the heat exchange pipe 320 constituting the heating water heat exchanger 300. Heat exchange to absorb the heat is made.

Next, the hot water, that is, the heating water inside the heat exchange pipe 320 where heat exchange is made, is introduced into the water tank 200 by the suction force and the earth output according to the driving of the circulation motor 410. After the heating water in the pipeline passes through the bottom heat exchanger 400 through the heat dissipation heat is released to heat the floor by the action.

At this time, when the water is insufficient in the water tank 200, the solenoid valve 262 is opened by the connection of the water level sensor 261 in the form of a limit switch, so that water from the outside supplement water supply unit 260 By being supplied to the water tank 200 through, the water level of the water supplied to the water tank 200 rises and the water level sensor 261 is short-circuited as the solenoid valve 262 is closed, the water tank 200 Water supplied to) will be blocked.

Next, the heated hot water in the inside of the heat exchange pipe 320 is transferred toward the bottom heat exchanger 400 due to the continuous driving of the circulation pump 410 and at the same time, the water in the water tank 200 is heated to heat the water. The heat exchange pipe 320 is supplied to the heat exchange pipe 320 and heat exchange is performed through a process of being discharged in a state where the temperature is increased through heat exchange.

At this time, the hot combustion gas passing through the heat exchange pipe 320 of the heating water heat exchanger 300 is in contact with the lower portion of the cylindrical body 210 constituting the water tank 200 and is moved in a horizontal direction. After the heat exchange is performed with the water filled in the inside, the waste combustion gas having the heat exchange is discharged into the atmosphere through the first discharge passage 120a, the second discharge passage 120b, and the combustion gas discharge pipe 120c.

Next, the water in the water tank 200 is heat-exchanged with the water in the water tank 200 in a process in which water is supplied and discharged through the direct water heat exchanger 250 while the water is heated to some extent through heat exchange. By being made and discharged, hot water of instantaneous high temperature is not discharged, but hot water having an almost constant temperature is discharged. That is, since the direct water heat exchanger 250 has a coil shape and is wound in a double inside the water tank 200, the cross-sectional area is widened so that the temperature is almost constant at the part where the direct water is discharged.

On the other hand, when grilling the chicken or duck using the roasting part 700, the left and right vertical doors 600a and 600b into the inside of the roasting part body 780 with the hinge door 715 open. The left and right vertical doors 600a and 600b are opened toward the inside of the boiler body 100 at the same time by pushing the handle 610 coupled to the.

Next, open the door 101 provided in the boiler body 100 to put the firewood in the space provided to the lower portion of the horizontal door 500, close the door 101 and operate the ignition unit 730 To be ignited. At this time, the ignition unit 730 is rotated by the blower 730a-1 and the outside air is injected through the first through hole 730a-3 formed in the air nozzle 730a-4 through the pipe 730a-2. The gas valve is opened and the gas is injected into the second through hole 730b-2 of the gas injection nozzle 730b-3 through the gas supply hose 730b-1. As it is ignited using the ignition bar of the fire due to the ignition of the ignition unit 730 is fired.

Next, in the state of holding the handle portion 752 of the bar 750, while pulling toward the front of the body portion 780, at the same time pull the bar 750 in the axial direction and at the same time rotating support 763a The end of the bar 750 coupled to the separation will be separated, and in the state of sandwiching the prepared chicken or duck on the separated bar 750, the bar 750 again rotating support 763a and inclined support groove The handle portion 752 of the grill bar 750 inserted into the 781 and closing the open hinge door 715 and at the same time the edge of the hinge door 715 is exposed to the outside of the inclined support groove 781. As it presses the bar 750 is sometimes prevented from being separated from the inclined support groove 781. In this state, the combustion gas of the firewood boiler is moved along the inside of the roasting body 780 and then passes through the space where the burner 110 is installed through the open space of the vertical door part 600, as described above. Through the process is discharged to the combustion gas discharge pipe (120c).

Next, in the process in which the combustion gas is moved along the inside of the roasting unit body 780, not shown chicken or duck inserted in the roasting bar 750 by the heat of the combustion gas, the driving motor ( The rotational force of 761 is decelerated through the reduction gear 763, and then transmitted to each reduction shaft 764 and the shaft 768, so that each of the roasting bars 750 rotates at a constant speed so that the chicken or duck burns. It is possible to prevent, and the oil generated in the process of roasting chicken or duck is dropped to the bottom and accumulated in the drip tray 720, after the roasting is finished, take out the drip tray 720 temporarily.

Next, while opening the hinge door 715 to take out the smell or grilled chicken or duck from the roasting body 780, the chicken or duck is discharged to the upper front of the roasting body 780 The high temperature heat, steam and odor is quickly discharged to the upper by the suction force and the discharge force due to the rotation of the discharge fan 741. At this time, the chicken or duck being grilled inside the roasting unit body 780 is made of a transparent hinge hinge 715, it can be seen without opening the hinge ring 715 from the outside, roasting body The grilled chicken or duck can be easily seen by the lighting 790 provided in the upper front of the 780.

1 is a perspective view of a boiler according to the present invention;

2 is a rear perspective view of the boiler according to the present invention;

3 is an exemplary view showing a configuration of a boiler according to the present invention.

Figure 4 is a side cross-sectional view showing the configuration of a boiler according to the present invention.

Figure 5 is a longitudinal sectional view showing the internal configuration of the roasting portion is coupled to the boiler according to the present invention.

Figure 6 is a longitudinal sectional view showing the internal configuration of the roasting portion is coupled to the boiler according to the present invention.

Figure 7 is a longitudinal sectional view showing the internal configuration of the roasting portion is coupled to the boiler according to the present invention.

Figure 8 is an exploded view illustrating the configuration of a horizontal door unit provided in the boiler according to the present invention.

<Brief description of symbols for the main parts of the drawings>

100: boiler body 110: burner

200: water tank 210: cylindrical body

220: hollow body 230: donut panel

240: space portion 250: direct heat exchanger

260: Replenishment water supply 261: Water level sensor

300: heating water heat exchanger 310,310 ': support plate

320: heat exchange pipe 400: bottom heat exchanger

410: circulation motor

Claims (10)

The combustion gas generated from the burner 110 provided in the boiler body 100 is discharged to the outside via the heating water heat exchanger 300 coupled to the lower portion of the water tank 200, and the heating water heat exchanger ( The heating water passing through 300 is reflowed into the water tank 200 via the bottom heat exchanger 400 and the circulation motor 410, and the reflowed cooling water is circulated through the heating water heat exchanger 300. In a boiler with a fork. The water tank 200 is fitted to the outer periphery of the donut-shaped panel 230 on both sides of the hollow cylindrical body 210 so as to be joined to each other by a welding joint, the hollow portion in the inner peripheral portion of the donut-shaped panel 230 Both sides of the sieve 220 are fitted to each other by a welded joint to form a space portion 240 between the inner peripheral surface of the cylindrical body 210 and the outer peripheral surface of the hollow body 220, the direct heat exchanger ( 250 is provided in the form of a coil, the inlet side and the outlet side of the direct water heat exchanger 250 are exposed to the outside through the toroidal panel 230, and the water level sensor (top) of the cylindrical body (210) The supplementary water supply unit 260 having the 261 is coupled, and the heating water heat exchanger 300 has a heat exchange pipe 320 repeated in a zigzag form between the support plates 310 and 310 'so that one side of the water Is connected to the tank 200, the other side is connected to the bottom heat exchanger 400, the support Sites 310, 310 'above the boiler, characterized in the bottom and spaced doeeojim of the water tank 200 of the. The method of claim 1, The separation plate 330 vertically interposed between the support plates 310 and 310 ′ of the heating water heat exchange part 300 is interposed, and a first discharge passage 120a is disposed at an upper side of the heating water heat exchange part 300. ) Is formed to face downward, a second discharge passage 120b directed upward at a lower portion of the first discharge passage 120a, and a combustion gas discharge pipe 120c in the second discharge passage 120b. Boiler characterized in that the combined. The method of claim 1, The combustion gas diffusion passage 270 is formed on the cylindrical body 210 so that the combustion gas passing through the heating water heat exchanger 300 is discharged through the diffusion passage 270. . The method of claim 1, The boiler body 100 has a horizontal door unit 500 is coupled to the inner bottom provided with a burner 110, the vertical door unit 600 is matched with the height of the horizontal door unit 500 is the boiler To be coupled to the body 100, the boiler 700 characterized in that the roasting portion 700 is coupled to the boiler body 100 including the vertical door portion 600. The method of claim 4, wherein The roasting part 700 is coupled to the hinge door 715 at the inlet side of the roasting space 710 formed therein, and the oil receiving plate 720 is detachably coupled to the lower portion of the roasting space 710. The ignition part 730, which is composed of an air supply part 730a and a combustion part 730b, is coupled to the lower part of the outlet side of the roasting space 710, and is located on the inlet side of the roasting space 710. The odor discharge unit 740 having the discharge fan 741 is coupled, and the plurality of roasting bar 750 horizontally installed in the roasting space 710 is configured to be rotated by the drive unit 760 installed on the outside. Boiler characterized by. The method of claim 5, The driving unit 760 is coupled to the reduction gear 763 by the first chain 762 to the drive motor 761 and the first gear 765 is coupled to the reduction shaft 764 of the reduction gear 763. The second gear 767 is coupled to the first gear 765 by the second chain 766, and the other third gear 769 is coupled to the shaft 768 of the second gear 767. The reduction shaft 764 and the shaft 768 are coupled to the boiler body 100 by the rotation support 763a, and the polygonal groove 763b is formed at the end of the reduction shaft 764 and the shaft 768. A boiler characterized in that it is formed. The method of claim 5, The bar 750 has a circular portion 751 is formed at the end having a polygonal cross section, the handle portion 752 is integrally formed on the circular portion 751, the circular portion 751 The boiler is characterized in that it is configured to be pressed by the hinged hinge 715 is inserted into the inclined support groove 781 formed in the guiding body 780. The method of claim 5, One side of the pipe 730a-2 is coupled to the discharge port of the blower 730a-1, and the air supply unit 730a has a plurality of first through holes 730a-3 on the other side of the pipe 730a-2. The air nozzles 730a-4 are formed, and the combustion unit 730b has a gas injection nozzle 730b- having a plurality of second through holes 730b-2 formed at the end of the gas supply hose 730b-1. 3) is coupled to the boiler, characterized in that the air nozzle (730a-4) is coupled to the lower portion of the gas injection nozzle (730b-3). The method of claim 4, wherein The horizontal door part 500 is divided into left and right horizontal doors 500a and 500b so that one side is fixed to hinge shafts 510 on both inner walls of the boiler body 100, and the hinge shafts 510. The left and right horizontal doors 500a and 500b fixed to each other are formed to be engaged with each other in an uneven form, and support grooves 520a and 520b are formed in portions engaged with the uneven form, respectively. Boiler, characterized in that the support shaft 530 is inserted through the 520a) (520b). The method of claim 4, wherein The vertical door part 600 is divided into left and right vertical doors 600a and 600b so that one side is hinged to the boiler body 100, and the other side of the left and right vertical doors 600a and 600b is opposed to each other. Boiler, characterized in that the handle 610 is coupled to.

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