KR20220059642A - Oil boiler - Google Patents

Abstract

According to the present invention, an oil boiler comprises: a combustion chamber for providing a combustion space where a combustion reaction takes place; a plurality of flue pipes connected to the combustion chamber so that a combustion gas flows through the inside thereof, to heat heating water flowing outside by using the combustion gas generated by the combustion reaction; a burner including a fuel nozzle for spraying oil-type fuel into the combustion space, a blower for providing air to the combustion space, and a spark plug for igniting a mixture of the sprayed fuel and the sprayed air; and a processor electrically connected to the burner. The processor controls the blower so that the blower operates at a low stage for providing the air at a predetermined wind speed at the time of ignition, and operates at a high stage for providing air at a wind speed greater than a predetermined wind speed after ignition. Therefore, at the time of ignition of the oil boiler, flames are stably settled so that lifting of the flame is reduced.

Description

oil boiler {OIL BOILER}

The present invention relates to an oil boiler.

A boiler is a device for heating a desired area by heating a fluid in a container. Therefore, in order to heat the heating water of the boiler, the boiler generates a flame and combustion gas by causing a combustion reaction using a burner, and generally has a structure that can heat the heating water using the heat transmitted from the flame and the heat transmitted from the combustion gas. have

A burner needs fuel to initiate a combustion reaction. As the fuel, liquefied petroleum gas or liquefied natural gas, which are a kind of fossil fuel, may be used, but oil-type diesel or kerosene may be used.

In the case of designing an oil boiler using a burner that generates less heavy dust and oxygen by using oil-type fuel, a method of supplying air together with fuel at high speed may be required. However, when the air and fuel supplied at high speed meet and ignite, a lifting phenomenon may occur in which the flame is not accurately positioned where it should be. In this case, ignition may not be smooth, and incomplete combustion may occur, which may increase the generation of nitrogen oxides. In addition, when incomplete combustion occurs, there is a high possibility that a yellow flame is formed by soot, and passages inside the boiler provided to allow the combustion gas to flow in a predetermined path may be blocked.

The present invention has been devised to solve such problems, and it is to provide an oil boiler in which the generation of nitrogen oxides is reduced by increasing the rate of settling of the flame during ignition to reduce the occurrence of lifting and realize stable combustion.

An oil boiler according to an embodiment of the present invention includes a combustion chamber providing a combustion space, which is a space in which a combustion reaction occurs; a plurality of pipes connected to the combustion chamber so that the combustion gas flows through the inside to heat the heating water flowing from the outside using the combustion gas generated by the combustion reaction; a burner including a fuel nozzle for spraying oil-type fuel into the combustion space, a blower for providing air to the combustion space, and a spark plug for igniting a mixture of the sprayed fuel and the injected air; and a processor electrically connected to the burner, wherein the processor operates at a low stage providing the air at a predetermined wind speed at the time of ignition, and provides the air at a wind speed greater than the predetermined wind speed after ignition Control the blower to operate at a high stage.

Accordingly, when the oil boiler is ignited, the flame is stably settled to reduce flame lifting, and stable combustion is possible, thereby reducing the generation of nitrogen oxides.

1 is a conceptual diagram of an internal structure of an oil boiler according to an embodiment of the present invention.
2 is a perspective view showing the internal structure of an oil boiler according to an embodiment of the present invention.
3 is a perspective view illustrating a burner of an oil boiler according to an embodiment of the present invention.
4 is a perspective view illustrating a state in which a flame forming unit is separated from a burner of an oil boiler according to an embodiment of the present invention.
5 is a perspective view illustrating an internal structure of a flame forming part of an oil boiler according to an embodiment of the present invention.
6 is a perspective view illustrating a situation in which the blower tube is disassembled from the flame forming part of the oil boiler according to an embodiment of the present invention.
7 is a longitudinal cross-sectional view of a flame forming part of an oil boiler according to an embodiment of the present invention.
8 is a perspective view illustrating a flame holder, a spark plug, a fuel nozzle, and a flame forming cover of an oil boiler according to an embodiment of the present invention.
9 is a bottom view of a flame forming part of an oil boiler according to an embodiment of the present invention.
10 is a perspective view illustrating a flameholder of an oil boiler according to an embodiment of the present invention.
11 is an exploded perspective view illustrating parts related to a blower in a burner of an oil boiler according to an embodiment of the present invention.
12 is an exploded perspective view of a blower of an oil boiler according to an embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. In adding reference numerals to the components of each drawing, it should be noted that the same components are given the same reference numerals as much as possible even though they are indicated on different drawings. In addition, in describing the embodiment of the present invention, if it is determined that a detailed description of a related known configuration or function interferes with the understanding of the embodiment of the present invention, the detailed description thereof will be omitted.

In addition, in describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only for distinguishing the elements from other elements, and the essence, order, or order of the elements are not limited by the terms. When it is described that a component is "connected", "coupled" or "connected" to another component, the component may be directly connected or connected to the other component, but another component is between each component. It will be understood that may also be "connected", "coupled" or "connected".

1 is a conceptual diagram of an internal structure of an oil boiler 1 according to an embodiment of the present invention. 2 is a perspective view showing the internal structure of the oil boiler 1 according to an embodiment of the present invention.

Referring to FIGS. 1 and 2 , the oil boiler 1 is a device for heating heating water through heat exchange between combustion gas and heating water generated therefrom after generating heat. The oil boiler 1 includes a combustion chamber 30 , a burner 20 , a flue 40 and a processor P. The oil boiler 1 may include a case 10 , an enclosure 60 , and a buffalo plate 50 . The case 10 may be formed in a cylindrical shape, but the shape is not limited thereto.

A combustion chamber 30 providing a combustion space 300, which is a space in which a combustion reaction occurs, may be provided inside the case 10 containing other components, and the burner 20 is disposed in the combustion space 300 The combustion reaction can produce heat and combustion gases. The combustion chamber 30 may be provided on the lower side of the case 10 , but the position thereof is not limited thereto.

The combustion chamber 30 may communicate with one end of the pipe 40 . A hollow 70 disposed outside the combustion chamber 30 and the combustion chamber 40 to allow heating water to flow around the combustion chamber 30 and the tube 40 may be formed in the case 10 . While the combustion gas generated in the combustion chamber 30 is discharged to the other end of the tube 40 through the tube 40, heating water flowing in the hollow 70 around the tube 40 and the combustion chamber 30 is discharged from the combustion gas. It can be heated and discharged by receiving heat.

The pipe 40 may extend along the vertical direction of FIG. 1 , and water may flow therethrough. A buffalo plate 50 may be disposed inside the tube 40 . The buffalo plate 50 is disposed so that the path through which the combustion gas flowing in the pipe 40 flows can be determined.

The pipe 40 is a component in which the combustion gas is provided to flow therein, and a plurality of water heaters may be disposed as shown. A buffalo plate 50 is inserted in the tube 40 . One end of the pipe 40 may communicate with the combustion chamber 30 . The pipe 40 may be arranged such that the other end of the pipe 40 crosses the hollow 70 to discharge the combustion gas to the outside. One end of the tube 40 may be a lower end located at the lower side, and the other end may be an upper end located at the upper side.

The burner 20 is provided to cause a combustion reaction from air and fuel. The fuel used by the burner 20 of the oil boiler 1 may be an oil type. The end of the burner 20 to which fuel is injected is located in the combustion chamber 30 , so that a combustion reaction may occur in the combustion space 300 of the combustion chamber 30 .

The enclosure 60 is a component that contains the internal structures of the oil boiler 1 illustrated in FIG. 1 . The enclosure 60 may have a rectangular parallelepiped shape as shown, but the shape is not limited thereto. A processor P may be installed in the enclosure 60 .

The processor P is a component including an element capable of performing a logical operation for performing a control command, and may include a central processing unit (CPU) or the like. The processor P may be connected to various components to transmit a signal according to a control command to each component, and may receive information obtained by being connected to various sensors or acquisition units in the form of signals. Accordingly, in one embodiment of the present invention, the processor P may be electrically connected to the blower 22 , the spark plug 24 , the fuel nozzle 23 , and the like included in the oil boiler 1 . Since the processor (P) may be electrically connected to each of the components, it may be connected with a conducting wire or may further have a communication module capable of wireless communication to communicate with each other.

The oil boiler 1 may further include a storage medium, so that control commands performed by the processor P may be stored in the storage medium and utilized. The storage medium may be a device such as a hard disk drive (HDD), a solid state drive (SSD), a server, a volatile medium, a non-volatile medium, and the like, but the type is not limited thereto. In addition to this, the storage medium may further store data necessary for the processor P to perform a task.

3 is a perspective view showing the burner 20 of the oil boiler 1 according to an embodiment of the present invention.

The burner 20 is a component that causes a combustion reaction, and includes a fuel nozzle 23 , a spark plug 24 and a blower 22 . The burner 20 may further include a housing 21 , a flame holder 25 , a tube frame 28 , a blower tube 26 , and a fuel pump 27 .

The housing 21 surrounds the components of the burner 20 or is coupled to the case 10 after being combined with each component to fix the relative positions of the components of the burner 20 with respect to the case 10 . am. The housing 21 is coupled to the blower 22 and the flame forming part, is coupled to the case 10 to cover the opening of the combustion chamber 30, and the combustion chamber cover 211 is coupled to the combustion chamber cover 211 to cover the flame forming part. Forming cover 212 may be included. In addition, the blower coupling part 213 provided so that the blower 22 is coupled from the outside of the case 10 may be formed in the combustion chamber cover 211 .

The fuel pump 27 is a device for pressurizing fuel provided from the outside or stored in a separate fuel tank to the fuel nozzle 23 through the fuel supply pipe 273 . Accordingly, the fuel pump 27 includes a fuel pressure forming unit 271 including a device such as a fuel impeller 224 capable of pressurizing fuel, and as it is driven by electric power, this fuel pressure forming unit 271 is to be driven. It may include a fuel motor 272 that generates and provides power that can be used.

4 is a perspective view showing a state in which the flame forming part is separated from the burner 20 of the oil boiler 1 according to an embodiment of the present invention. 5 is a perspective view showing an internal structure of the flame forming part of the oil boiler 1 according to an embodiment of the present invention. 6 is a perspective view illustrating a situation in which the blower tube 26 is disassembled from the flame forming part of the oil boiler 1 according to an embodiment of the present invention. 7 is a longitudinal sectional view of the flame forming part of the oil boiler 1 according to an embodiment of the present invention. 8 is a perspective view showing the flame holder 25, the spark plug 24, the fuel nozzle 23, and the flame forming cover 212 of the oil boiler 1 according to an embodiment of the present invention. 9 is a bottom view of the flame forming part of the oil boiler 1 according to an embodiment of the present invention.

The flame forming unit may include a flame holder 25 , a tube frame 28 , a blower tube 26 , a fuel nozzle 23 , and a spark plug 24 . In the flame forming part, fuel and air are mixed to generate a flame so that the flame is disposed in the combustion space 300 of the combustion chamber 30 .

Flame forming part - fuel nozzle (23)

The fuel nozzle 23 is a component that sprays oil-type fuel into the combustion space 300 . Therefore, the fuel nozzle 23 is connected to the fuel pump 27 through the fuel supply pipe 273, and can receive oil-type fuel from the fuel pump 27, and the fuel pump 27 pressurizes the fuel. The fuel is sprayed into the combustion space 300 by pressure. Let the direction in which the fuel nozzle 23 sprays fuel into the combustion space 300 be a reference direction (D). The reference direction D may be a direction in which the burner 20 is inserted into the case 10 or a direction in which the fuel nozzle 23 extends.

The flow rate at which the fuel nozzle 23 sprays fuel may be determined by the fuel pump 27 . The fuel nozzle 23 may be disposed through the flame forming cover 212 . The inner end 231 of the nozzle, which is the end of the fuel nozzle 23 on the reference direction (D) side and where the outlet through which the fuel is injected is formed, may be located inside the combustion chamber 30 as shown, and in the reference direction ( While extending from the columnar nozzle body 232 passing through the housing 21 along D), the cross-sectional area in a cross-section cut in a plane perpendicular to the reference direction D may be reduced.

Flame Forming Part - Spark Plug (24)

The spark plug 24 is a component that ignites a mixture of sprayed fuel and sprayed air. The spark plug 24 may cause an electrical spark to ignite the mixed material. As the oil-type fuel is sprayed and air is sprayed and mixed in the flame forming unit and the combustion space 300 to form a mixed material, an electric spark is generated, thereby forming a flame.

The plug body 242 passes through the housing 21 in the reference direction D, and an end opposite to the reference direction D of the spark plug 24 may be electrically connected to the processor P or a power source. The plug inner end 241 , which is an end on the reference direction D side of the spark plug 24 , may be disposed adjacent to the nozzle inner end 231 inside the combustion chamber 30 . The fuel nozzle 23 may be disposed at the center of the blower tube 26 when viewed along the reference direction D, and the spark plug 24 may be disposed around the fuel nozzle 23 . The plug inner end 241 may be inclined in a direction approaching the nozzle inner end 231 from the plug body 242 in the reference direction D. A spark may be formed at the inner end 241 of the plug.

Flame forming part - blower tube (26)

The blower tube 26 surrounds a portion of the fuel nozzle 23 and the spark plug 24 inserted into the combustion chamber 30 and is connected to the blower 22 . The blower tube 26 may have an internal space through which the air compressed by the blower 22 flows, and an exhaust opening that is an opening open toward the combustion space 300 . Therefore, the fuel sprayed by the fuel nozzle 23 and the air compressed by the blower 22 may be discharged into the combustion space 300 through the exhaust opening, and sparks may form while generating a flame. The discharge opening may be at least partially covered by the flameholder 25 .

The blower tube 26 may include a straight tube portion 262 having a cylindrical appearance and having an end opposite to the reference direction D coupled to the housing 21 . The blower tube 26 is a tapered portion ( 261) may be included. That is, the tapered portion 261 may correspond to the tube end region, which is a region adjacent to the end of the blower tube 26 in the reference direction (D). A flame holder 25 may be disposed on the inside of the tapered portion 261 . A tube frame 28 is disposed inside the straight pipe part 262 , and the tube frame 28 may be coupled to the inner surface of the straight pipe part 262 .

The inner surface of the tapered portion 261 of the blower tube 26 and the outer surface of the flame holder 25 may be spaced apart from each other at a predetermined distance. That is, the blower tube 26 and the flame holder 25 may not contact each other, and the flame holder 25 may not completely cover the discharge opening. The predetermined interval may be 0.8 mm or more and 1.8 mm or less, but may vary depending on the amount of heat generated by the burner 20 or other characteristics. When looking at the blower tube 26 and the flame holder 25 along the reference direction (D), the discharge opening and the flame holder 25 may form a concentric circle.

Flame Forming Part - Tube Frame (28)

The tube frame 28 is a component arranged to fix the relative position of the components within the flame forming section. The tube frame 28 is connected to the tube connection part 281 coupled to the inner surface of the straight pipe part 262 of the blower tube 26, and the tube connection part 281, and the holder connection part 282 is coupled to the flame holder 25. ) may be included. Therefore, the tube frame 28 is spaced apart from the blower tube 26 and the flame holder 25 without contacting each other, and when viewed along the reference direction (D), a relative positional relationship that can draw concentric circles can be maintained. .

The tube connecting portion 281 may be formed in a disk shape so as to be coupled to and in contact with the inner surface of the straight tube portion 262 . An opening is formed in the center of the tube connection part 281 so that the fuel nozzle 23 can be inserted and fixed. The holder connection portion 282 may be formed in a shape such as a pillar to protrude along the reference direction (D) from the tube connection portion 281 and be coupled to the flame holder 25, and stably the flame holder 25. A plurality may be disposed to support it. The end of the holder connection part 282 in the reference direction (D) is inserted into the coupling hole 256 formed in the flame holder 25 , or is coupled with the fastener inserted into the coupling hole 256 and coupled with the flame holder 25 . can be

Since the tube frame 28 is for maintaining the relative positional relationship between the blower tube 26 and the flame holder 25, it may include a plurality of holes formed to reduce the weight. A spark plug 24 may pass through one of these holes.

Flame Forming Part - Flame Holder (25)

10 is a perspective view showing the flame holder 25 of the oil boiler 1 according to an embodiment of the present invention.

The flame holder 25 is a component disposed for smooth flame formation. The flame holder 25 may include a holder plate 251 and a holder circumference 252 . The flame holder 25 may further include a central opening 253 , a vortex opening 254 , a coupling hole 256 , and a vortex blade 255 formed in the holder plate 251 .

The holder plate 251 is formed in a plate shape and is a component arranged to at least partially cover the discharge opening formed in the blower tube 26 . In one embodiment of the present invention, although it is illustrated that the holder plate 251 is formed in a disk shape, the shape is not limited thereto.

The holder circumference 252 is a portion extending from the circumference of the holder plate 251 in the reference direction D, and in an embodiment of the present invention, since the holder plate 251 is formed in a disk shape, the holder plate 251 ) may have a ring shape protruding in the reference direction (D) along the circumference. However, the shape of the holder peripheral portion 252 is not limited thereto.

The central opening 253 is an opening formed in the center of the holder plate 251 so that the fuel sprayed by the fuel nozzle 23 reaches the combustion space 300 . Air may be discharged through the central opening 253 . The central opening 253 may be formed in a circular shape, but may be formed in an incomplete circular shape in which a portion of the periphery is linearly formed as shown, and the shape is not limited thereto.

The vortex opening 254 is another opening formed in the holder plate 251, and may be formed in plurality. The vortex opening 254 may be radially formed around the central opening 253 . In one embodiment of the present invention, the four vortex openings 254 are described based on the drawings shown as being arranged to form an equal angle of 90 degrees, but the number and arrangement are not limited thereto. As the vortex opening 254 is formed, the air provided to the blower tube 26 by the blower 22 moves to the combustion space 300 to form a vortex to form a flame together with the fuel.

The vortex blade 255 is a portion disposed on the holder plate 251 adjacent to the vortex opening 254 . The vortex blades 255 may have a number corresponding to the number of the vortex blades 255 . The vortex blades 255 may be disposed to guide the air so that the air discharged through the vortex opening 254 rotates in the same direction, protruding from the circumference of the vortex opening 254 .

The vortex blade 255 may protrude from the circumference of the vortex opening 254 to the outside of the combustion space 300 , that is, in the opposite direction to the reference direction (D). The vortex blade 255 may be formed to be inclined in one direction with respect to the direction opposite to the reference direction (D). Specifically, when the flame holder 25 is viewed along the reference direction D, the perimeter of each of the vortex openings 254 is a clockwise edge and a counterclockwise edge extending radially from the central opening 253 . can have The plurality of vortex blades 255 protrude from the corners in a common direction among the clockwise corners or counterclockwise corners of the plurality of vortex openings 254, counterclockwise with respect to the direction opposite to the reference direction (D). It may have a shape inclined in a direction or a clockwise direction. Therefore, when the flame holder 25 is viewed along the reference direction D, the vortex wings 255 may cover at least a portion of the vortex opening 254 . In one embodiment of the present invention shown in the drawings, the plurality of vortex openings 254 protrude from the clockwise side corners, and have a shape inclined counterclockwise with respect to the direction opposite to the reference direction (D).

Due to the shape of the vortex blade 255 and the vortex opening 254 described above, the air discharged from the internal space of the blower tube 26 through the flame holder 25 is whirled along the shape of the vortex blade 255 . It can form a vortex and better create a mixed material with the atomized fuel. Accordingly, the flame is smoothly formed, and the occurrence of a lifting phenomenon in which the flame is separated from the flame holder 25 can be reduced.

A coupling hole 256 is formed in the holder plate 251 to be coupled to the holder connection portion 282 of the tube frame 28 described above. The coupling holes 256 may be formed in plurality, and the flame holder 25 may be supported in a balanced manner, and may be arranged at equal intervals and at an angle to each other based on the center of the holder plate 251 .

Blower(22)

11 is an exploded perspective view illustrating parts related to the blower 22 in the burner 20 of the oil boiler 1 according to an embodiment of the present invention. 12 is an exploded perspective view of the blower 22 of the oil boiler 1 according to an embodiment of the present invention.

The blower 22 is a device for pressurizing air supplied from the outside to the combustion space 300 . The blower 22 is an impeller 224 for compressing air and delivering it to the blower tube 26, and a blower motor 223 that generates a rotational driving force for rotating the impeller 224 and transmits it to the impeller 224. may include The blower 22 includes an impeller cover 222 that can cover the impeller 224 built in the blower coupling part 213, and a motor cover 221 that covers the blower motor 223 seated on the impeller cover 222. may include

The motor cover 221 may be formed to accommodate the blower motor 223 therein. The motor cover 221 may be coupled and fixed to the housing 21 while the blower motor 223 is embedded therein. The motor cover 221 may include a motor built-in part 2211 in which the blower motor 223 is built, and an air inlet part 2212 which is a passage through which air is introduced from the outside. Air may be introduced into the motor built-in part 2211 from the outside through the air inlet 2212 , and the introduced air may be delivered to the impeller 224 to be pressurized to the blower tube 26 .

The blower motor 223 may include a stator 2232 , a shaft 2234 , a rotor 2233 , and a motor frame. A stator 2232 and a rotor 2233 are disposed in the motor frame, and the motor frame is coupled to the impeller cover 222 to fix the blower motor 223 with respect to other components. The stator 2232 is formed in an annular shape and may be formed in a shape in which a conductive coil is wound a plurality of times. The rotor 2233 is inserted into an opening formed open along the reference direction D at the center of the stator 2232 , and may be formed of a conductive material. When power is applied to the blower motor 223 , the rotor 2233 may rotate in the axial direction in the reference direction D by electromagnetic interaction between the stator 2232 and the rotor 2233 .

A shaft 2234 extending along the reference direction D is inserted into the center of the rotor 2233 . The shaft 2234 may be coupled to the power transmission unit 2242 of the impeller 224 to be described later, and may transmit the rotation of the rotor 2233 to the impeller 224 . That is, the impeller 224 may also rotate in the reference direction (D) in the axial direction.

The impeller cover 222 may be formed in an annular plate shape. The impeller cover 222 may be coupled to the housing 21 while covering the impeller 224 built in the blower coupling part 213 . A blower motor 223 may be coupled to an upper surface of the impeller cover 222 , and a motor cover 221 may be coupled to the impeller cover 222 . Air introduced through the motor cover 221 may be delivered to the center of the impeller 224 through a hole formed in the center of the impeller cover 222 . The shaft 2234 may be coupled to the power transmission unit 2242 of the impeller 224 through a hole formed in the center of the impeller cover 222 .

The impeller 224 compresses and blows the introduced air by rotating. Therefore, the impeller 224 may have a special shape, and may be formed in such a way that a plurality of spiral blades are disposed spaced apart from each other on the outer surface of the body formed in a gentle cone or truncated cone shape. However, the shape of the impeller 224 is not limited thereto.

The inlet of the impeller 224 is a region corresponding to the vertex of the cone or the upper surface of the truncated cone. That is, an annular hole formed between the power transmission unit 2242 formed in the center of the impeller 224 and the shroud 2241 according to an embodiment of the present invention may act as an inlet of the impeller 224 . Air introduced through the inlet of the impeller 224 is transmitted to the outlet of the impeller 224 formed in the radial direction of the impeller 224 through the space between the blades and the blades according to the rotation of the impeller 224, and compressed can be released from the state. The impeller 224 may further include a shroud 2241 covering the wings. An air passage communicating the blower coupling part 213 and the blower tube 26 may be formed in the housing 21 . The outlet of the impeller 224 blows compressed air into this air passage.

The blower 22 may be controlled such that air is pressure fed to the blower tube 26 at a plurality of different wind speeds. The processor P may control the blower 22 so that the blower 22 operates in a low stage or a high stage. The processor P may control the blower motor 223 to operate in a low stage or a high stage by providing currents of different magnitudes to the blower motor 223 . At a low stage, the processor P may provide a predetermined low stage current to the blower motor 223 , and at a high stage, the processor P may provide a higher stage current greater than the low stage current to the blower motor 223 . The processor (P) may control the blower 22 to operate in a low stage at the time of ignition, and in a high stage after ignition.

The low stage means a state in which the blower motor 223 rotates at a low stage speed so as to provide air at a low stage wind speed that is a predetermined wind speed. The low stage speed may be determined according to the low stage air ratio of the burner 20 or the amount of heat generated. The high stage means a state in which the blower motor 223 rotates at a high stage speed greater than the low stage speed to provide air at a high stage wind speed greater than the low stage wind speed. Here, the low speed may be 20% to 60% of the high speed. For example, the low speed may be 1400 rpm or more and 2600 rpm or less, and the high speed may be 3000 rpm or more and 3400 rpm or less. As described above, the blower 22 is controlled differently at the time of ignition and after ignition to prevent a flame lifting phenomenon that may occur due to wind speed of excessively strong air during ignition, but strong wind speed to obtain high heat quantity after ignition air can be provided.

In the above, even though it has been described that all components constituting the embodiment of the present invention operate by being combined or combined into one, the present invention is not necessarily limited to this embodiment. That is, within the scope of the object of the present invention, all the components may operate by selectively combining one or more. In addition, terms such as "comprises", "comprises" or "have" described above mean that the corresponding component may be inherent, unless otherwise specified, excluding other components. Rather, it should be construed as being able to further include other components. All terms, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs, unless otherwise defined. Terms commonly used, such as those defined in the dictionary, should be interpreted as being consistent with the contextual meaning of the related art, and are not interpreted in an ideal or excessively formal meaning unless explicitly defined in the present invention.

The above description is merely illustrative of the technical spirit of the present invention, and various modifications and variations will be possible without departing from the essential characteristics of the present invention by those skilled in the art to which the present invention pertains. Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments. The protection scope of the present invention should be construed by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

1: oil boiler
10: case
20: burner
21: housing
22 : blower
23: fuel nozzle
24 : spark plug
25: flame holder
26: blower tube
27: fuel pump
28: tube frame
30: combustion chamber
40 : association
50: buffalo plate
60: enclosure
70: hollow
211 combustion chamber cover
212: flame forming cover
213: blower coupling part
221: motor cover
222: impeller cover
223: blower motor
224: impeller
231: nozzle inner end
232: nozzle body
241: plug inner end
242: plug body
251: holder plate
252: holder circumference
253: central opening
254: vortex opening
255: vortex wing
256: coupling hole
261: taper part
262: straight pipe
271: fuel pressure forming part
272: fuel motor
273: fuel supply pipe
281: tube connection part
282: holder connection part
300: combustion space
2211: Motor built-in part
2212: air inlet
2231: motor frame
2232 : Stator
2233: rotor
2234: shaft
2241 : Shroud
2242: power transmission unit
2243: impeller exit
D: reference direction
P: processor

Claims (9)

a combustion chamber providing a combustion space that is a space in which a combustion reaction occurs;
a plurality of pipes connected to the combustion chamber so that the combustion gas flows through the inside to heat the heating water flowing from the outside using the combustion gas generated by the combustion reaction;
a burner including a fuel nozzle for spraying oil-type fuel into the combustion space, a blower for providing air to the combustion space, and a spark plug for igniting a mixture of the sprayed fuel and the injected air; and
a processor electrically connected to the burner;
The processor controls the blower to operate in a low stage providing the air at a predetermined wind speed at the time of ignition, and in a high stage providing the air at a wind speed greater than the predetermined wind speed after ignition. According to claim 1,
The blower includes a blower motor that generates a rotational force for pumping air,
and the processor controls the blower motor to operate in the low stage or the high stage by providing currents of different magnitudes to the blower motor. According to claim 1,
a central opening formed in the center so that the fuel sprayed by the fuel nozzle reaches the combustion space; The oil boiler further comprising: a flame holder having a plurality of vortex openings radially formed around the periphery of the plurality of vortex openings, and a plurality of vortex blades protruding outwardly of the combustion space from the circumference of the plurality of vortex openings. 4. The method of claim 3,
The plurality of vortex blades are disposed to guide the air so that the air discharged through the plurality of vortex openings rotates in the same direction. 5. The method of claim 4,
When the fuel nozzle sprays fuel into the combustion space as a reference direction,
When the flame holder is viewed along the reference direction, the circumference of each of the plurality of vortex openings has a clockwise edge and a counterclockwise edge extending radially from the central opening,
The plurality of vortex blades are protruded from the corners in a common direction among the clockwise corners or the counterclockwise corners, and are inclined in a counterclockwise or clockwise direction with respect to the opposite direction of the reference direction. Eggplant, oil boiler. 4. The method of claim 3,
A blower tube surrounding the fuel nozzle and the spark plug, the blower tube having an internal space connected to the blower through which the air compressed by the blower flows, and an exhaust opening that is an opening open toward the combustion space,
wherein the flameholder covers the discharge opening. 7. The method of claim 6,
The inner surface of the blower tube and the outer surface of the flame holder are spaced apart from each other at a predetermined distance, an oil boiler. 8. The method of claim 7,
When the fuel nozzle sprays fuel into the combustion space as a reference direction,
When the blower tube and the flame holder are viewed along the reference direction, the discharge opening and the flame holder form concentric circles. 8. The method of claim 7,
When the fuel nozzle sprays fuel into the combustion space as a reference direction,
The tube end region adjacent to the reference direction end of the blower tube has a shape in which a cross-sectional area cut in a plane perpendicular to the reference direction decreases along the reference direction.

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