KR20160089302A

KR20160089302A - Firewood boiler which has a hexagonal heating duct is briquette laid

Info

Publication number: KR20160089302A
Application number: KR1020160086143A
Authority: KR
Inventors: 김혜경
Original assignee: 김혜경
Priority date: 2016-07-07
Filing date: 2016-07-07
Publication date: 2016-07-27

Abstract

Disclosed is a firewood boiler including a horizontal briquette placement type hexagonal heating duct. The present invention relates to a briquette assisting type firewood boiler keeping heat of hot water in a water talk for a long time, capable of preventing a rapid temperature drop of hot water in a water tank through heat of briquettes, properly delayed to be ignited by a briquette combustion control panel, since combustion gas flows around the outer surface of the briquettes as the briquettes are horizontally placed in the hexagonal heating duct. The hexagonal heating duct secures structural hardness to bear strong heat. An upper ∧-shaped part of the duct prevents the duct from being curved or drooped by the weight of the hot water in the water tank. A lower V-shaped part prevents the duct from being curved or drooped by the weight of the briquettes, and also makes pyroligneous liquor discharged under the horizontally placed briquettes along a discharge groove forming a natural gradient in a range of 1-5 degrees. Therefore, the present invention is capable of solving a problem that hot water becomes rapidly cool in the morning as combustion is finished early due to a shortage of additional firewood even though firewood was full in a common firewood boiler in the evening.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a wood boiler having a briquetting cross-over type hexagonal hot water heating furnace,

The present invention relates to a briquette-assisted wood boiler capable of keeping warm water of a water tank for a long time, and also relates to an internal heating flue structure of a wood boiler ensuring structural stiffness against high heat.

Solid fuels used as firewood in wood boilers are bulky and have a low heat efficiency compared to oil or gas because they generate less heat per unit weight. Therefore, the inner volume of the combustion chamber of the wood boiler must be large so that a large amount of firewood can be burnt and burned at once, and the structure of the combustion chamber interior and inlet should be a simple rectangular shape to easily scrape up the burned residue adhered to the inner surface do.

In addition, the wood boiler must be capable of burning various solid fuels such as wood, pallets and coal as needed. Therefore, the combustion chamber opening door should be large enough to have an entrance, and should be easy to open and close and lock.

Unlike liquid fuels, the solid fuels described above are difficult to continuously supply in a small amount, and the recovery of residual combustibles is troublesome. Because of this, the door of the wooden boiler can be designed to be designed with the same width and height as the combustion chamber so that it can inject a large quantity of fuel quickly and can easily remove ashes and residue.

The wood boiler has a water jacket structure that corresponds to a thin space between the water tank and the flue, between the flue and the combustion chamber, that is, a space that surrounds the combustion chamber thinly. The water is heated by transferring the heat of the combustion chamber to the water jacket, As heating water or hot water.

Therefore, the higher the temperature of the outer wall of the combustion chamber, which transfers heat to the water jacket when the same amount of wood is introduced, and the longer the temperature of the outer wall of the combustion chamber, the higher the thermal efficiency of the wood boiler.

In order to transfer the temperature of the wall of the combustion chamber directly to the outer wall, the wall thickness of the combustion chamber should be as thin as possible, but adequate strength must be supported to withstand the high temperature and load of the water tank.

In order to absorb the heat of combustion as much as possible, the internal flue of the wood boiler is installed in a water tank in a round shape or a round shape which reciprocates at least once in the longitudinal direction of the combustion chamber. At this time, the inner surface of the year is also likely to stick to wood vinegar or rosin, so that the sectional area of the flue is formed to be wide enough so that the tool can be easily inserted and cleaned.

On the other hand, most of the wood boilers are used for economical purposes such as reducing the fuel cost, so that the price of boiler products should be set as low as possible. Therefore, it is preferable to use a simple square rectangular shape of the boiler so that the steel plate forming the main structure can be easily cut, sheeted, assembled, welded, and manufactured at a low cost.

In order to compensate for the insufficient combustion duration of wood fuel, a mixed boiler has been studied which sets the burning time of the wood which is settled in the combustion chamber differently or burns the mixture of briquet and wood.

Today's wood boilers are being market-friendly to improve the combustion characteristics optimized for the usage patterns of actual customers. Recently, it is important to know how long the heating water in the water jacket and water tank can be kept hot with limited fuel quantity. Is being recognized.

However, wood, which is the main raw material of wood boilers, has a weak point of peak to peak calorific value, and it has a weak point that cumulative total calorific value is unsatisfactory because it is difficult to burn slowly.

The drawback of this fuel characteristic is that it is difficult to keep the combustion chamber in combustion state for at least 7 ~ 8 hours when using wood boiler as general household heating boiler, so it is difficult to avoid the trouble of supplementing fuel at midnight or early morning in winter. Mixed boilers have been studied in which mixed wood and wood are mixed and burned.

Briquettes have a weak point in that they take a long time to completely ignite and generate carbon monoxide, which is a harmful gas, but they are a good complementary fuel that can solve the weakness of the above mentioned wood boiler in that it can be taken for a long time if a fire occurs.

The following prior art documents relate to the present invention of the applicant of the present invention relating to wood boilers and to the application of the other bifurcated harmonious boiler application to other people, which is necessary for the design of combustion chamber, door, year and water jacket Technical knowledge is fully disclosed, and the concept of technology for placing briquettes in the year of the combustion gas flow is presented.

(1) A wood-boiler having an integrated combustion chamber and a flat convection tube for natural convection arranged upside down in the year (2) A boiler door assembly and a wooden boiler having the same (3) Registered utility model 20-0386276 Combined fire-fighting and general purpose boiler

The concept of technology that allows the use of briquettes in wood boilers has long been attempted. However, most of the additions of briquetting furnaces were simply connected to the water tank of the wood boiler by heating pipes, or they were merely inserted into the combustion chamber where the wood was burnt, so that only the combustion chamber was limited.

In wood-briquetted mixed boilers, the combustion chamber should be more tightly sealed in consideration of the combustion characteristics of briquettes that are late in ignition and generate harmful gases.

Briquettes are usually burned in a furnace made of heat-resistant material. This method can keep the briquetting for a long time because of the small contact area between air and briquettes, but it is difficult to organically combine with other combustion chamber spaces due to limited heating direction and heat transfer area .

The briquettes were designed to be stacked in a combustion chamber, which was advantageous in propagating the temperature of the surface of the briquettes through the radiant heat inside the combustion chamber, but as a result, the void space inside the combustion chamber became excessively large, The thermal efficiency is low and the flow of air and combustion gas is worse than the merits. In addition, the ignition time and combustion duration of the two combustion chambers were very different, and it was necessary to take many inconveniences and troubles to obtain more calories.

As shown in the above-mentioned prior art document (3), replacing part of the path of the combustion gas passing through the wood with the briquetting furnace is a good way to efficiently use the whole space.

However, the briquetting combined wood boiler of Document (3) has a disadvantage in that the briquetting furnace is too heavy to install the water jacket for hot water circulation around the flue disposed therein. The role of the hot water heating cycle is to ensure that there is a water-filled space (water jacket) around it and a thin steel plate for the heat transfer.

In document (3), water jacket formation is abandoned in order to support the weight of the furnace, and the upper flue of the combustion chamber is formed of a strong structural member, thereby greatly limiting the heat transfer area for hot water heating.

In addition, combustion gases can not pass around the briquettes because of the oven, and only through the holes in the briquettes can the gas pass. If the wood is burned in the lower combustion chamber, the surface of the briquetting hole will rapidly accumulate the wood vinegar and the rosin contained in the combustion gas, thereby reducing the overall combustion efficiency.

(3) is not a boiler that burns wood and briquettes at the same time, but can only remove the hearth and burn wood if necessary, or only the operation of supplying only fresh air from the combustion chamber, This is possible.

As described above, the entire combustion chamber space and the water jacket installation structure are not designed optimally and can not be effectively used as either the wood or the briquettes because they are inefficient.

The main object of the present invention is to absorb the advantages of briquette fuel while maintaining the basic structure and specific effect of the wooden boiler.

In the present invention, in order to maintain the inherent thermal efficiency of the wood boiler, it is not necessary to provide a separate space for briquetting combustion, and the briquetting device should not change the unique structure of the water jacket around the wood boiler combustion chamber and the hot water heating furnace .

Accordingly, the role of briquetting needs to be limited to the auxiliary concept of extending the burning time of wood fuel only (hereinafter referred to as the solid fuel for wood boilers including wood).

That is, since the maximum weak point of the conventional wood-dedicated boiler is that the holding time of the combustion heat is not long enough, the present invention studies a method in which the burnt briquetting is ignited a little later and the wood in the combustion chamber is burned almost all after burning.

It should be noted in this process that the flue gas passing through the hot water heating cycle of the wood boiler should not interfere with the heat exchange with the wall inside the flue just to ignite the briquettes.

In order to satisfy the above conditions, the present invention has devised a method in which a briquette is directly exposed to a flow of a combustion gas by transversely briquetting the briquettes in a hot water heating furnace in a row.

The duct cross-sectional area of the hot water heating flue should be larger than the size of the briquettes (the size of the round briquette over the top of the briquettes viewed in the longitudinal direction (downward direction)) so that the combustion gas can flow around the rolled briquettes.

On the other hand, if the briquettes are placed directly on the inner wall of the year, the weight of the briquettes and the high temperature may work together, and the steel sheet itself may be bent or sagged. In addition, there is a possibility that the air is excessively supplied to the vicinity of the briquette and the briquette is ignited prematurely.

In order to prevent this, a hexagonal pipe was used to withstand the high temperature when the hot water heating year was over, and a briquetting combustion control plate was installed in front of the point where the briquette was transversally blocked.

The upper part of the hexagonal pipe is supported to prevent bending or sagging of the hot water in the water tank. The lower part V is supported so as to prevent bending or sagging of the load of the briquettes, And serves as a discharge groove for the flowing wood vinegar. In addition, the briquette combustion regulating plate installed at the inlet of the hot water heating burner is set to a size similar to the briquetting wood, and it is a net type disk having the size and number of the through holes appropriately adjusted in the disk completely filled with the wood fuel and the desired briquetting ignition point. As shown in FIG.

This completes the auxiliary combustion structure of the briquette which hardly interferes with the flue gas flow in the wood burned in the combustion chamber and the heat exchange between the veneer discharge and the hot water heating flue and the water jacket.

In addition to the above-described solutions, additional technical means and associated structures supporting the technical idea of the present invention refer to the following detailed description based on the accompanying drawings.

According to the present invention, it is possible to solve the disadvantage that when the combustion chamber is filled in the evening in the domestic household wood boiler and the wood fuel is not further supplied until the next morning, the combustion is prematurely terminated and the hot water is rapidly cooled.

Assuming that a normal 22-ball No. 2 briquetting (weight of 3.3 kg or more when dry, heat of 15200 kcal or more, calorific value per hour 1300 to 1500 kcal / h) is completely ignited after 2 hours from the start of combustion of wood fuel and burned for 8 hours Is not a combustion condition, so the average heat per hour for 8 hours can be seen as 1000 ~ 1200kcal. When three briquettes are transposed, the heat output per hour is 3000 ~ 3600kcal, which is the heat quantity that can raise 300 ~ 360 liters of water by 10 ℃ for 1 hour. That is, when the temperature setting for the winter operation (heating hot water circulation amount) of the wood boiler storing 350 liters of hot water is set to a temperature drop of 20 ° C per hour, the temperature falls within 5 ° C per hour after 4 to 5 hours from the start of combustion It is possible to hold more than 2 ~ 3 hours. If the circulation amount of heating hot water is appropriately reduced, it is possible to provide sufficient amount of heat for showering hot water while maintaining minimum warmth in the morning of winter.

In the process of exhibiting the above effects, the briquette hot air directly touches the inner wall surface of the hot water heating furnace so that hot water in the water jacket is hotter, and on the one hand, there is no unnecessary additional parts (cost) It is another effect inherent to the present invention that the function of the wood boiler can be faithfully exhibited.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view of a boiler according to the present invention,
3, 4 and 5 are perspective views of the boiler of the present invention,
Figures 6 and 7 are enlarged views of the briquetting transversal structure and individual perspective views of the major components
8 is an overall sectional view of the boiler according to the present invention

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and advantages of the present invention will be more apparent from the following description taken in conjunction with the accompanying drawings, in which: FIG.

However, in the embodiments described below, the components expressed in the specific terminology and the combination structure thereof do not limit the technical ideas encompassed in the present invention.

In the present invention, a component showing independent technical features such as a hot water heating year is defined as reference numeral 50, and the detailed structure and accessories of the hot water heating year are defined to be included in the reference numerals 51 to 59 belonging to the corresponding digit Respectively.

That is, the configuration defined by one of the reference numerals 51 to 59 may be a detailed configuration included in the hot water heating year 50, and the same definition may be applied to other configurations such as the combustion chamber door 40 and the discharge year 70 .

FIGS. 1 and 2 are perspective views of an inventive wooden boiler according to the present invention, and FIGS. 3 to 5 are perspective views showing an internal structure of the wood boiler body by partially removing the outer surface thereof.

In the wood boiler, a combustion chamber 30 for burning wood is disposed at the bottom, and a water tank 80 is disposed thereon. In the drawing, the boiler front portion where the doors 40 and 42 are disposed is forward, and the boiler rear portion to which the exhaust flues 70 are connected is rearward.

Between the combustion chamber 30 and the water tank 80, a water jacket 81 surrounds the combustion chamber and provides heating and circulating space for hot water.

The water tank 80, which can be seen as a structure including a water jacket, is disposed above the water jacket so that water can pass through each other. In other words, the inside of the water tank 80 is heated and stored as hot water, and the storage space extends to the hot water heating and circulation space in the water jacket 81 disposed below.

A hot water heating furnace (50) is arranged above the combustion chamber and a waste heat recovery furnace (60) is arranged next to the hot water heating furnace in the upper part of the furnace to form a flue of a typical wooden boiler.

The outlet of the combustion chamber is connected to the rear inlet of the hot water heating furnace (50) by one conduit. In addition, the front outlet of the hot water heating flue is connected to the front inlet of the waste heat recovery flue by one duct.

The flue door 42, which provides a passage for opening or closing the front outlet of the hot water heating flue 50 and introducing or discharging the briquette, is formed to be as big as the combustion chamber door 40 as shown in the figure, It is advantageous to clean and manage the whole year by simultaneously opening and closing the entrance.

For reference, the hot water heating furnace 50 is inclined at an inclination angle of 1 ° to 5 ° so that the veneer condensed while the combustion gas cools down can be smoothly discharged to the bottom of the combustion chamber through the bottom of the burned briquettes And the height of the door is higher).

In the waste heat recovery year (60), heat is transferred to the water jacket through the hot water heating burner, and then a somewhat coarse combustion gas passes through. In order to recover the maximum amount of waste heat before the flue gas, which has cooled somewhat but is significantly hotter than the hot water temperature, completely escapes to the discharge flue 70, the material of the waste heat recovery flue is preferably a very thin steel plate The pipe cross-sectional area is reduced as compared with the hot water heating period so that the flow rate is increased, and the thin plate is made into a circular pipe so as to withstand the water pressure of the water tank.

The briquetting transversal structure of the present invention and its technical function will be described with reference to Figs. 5 to 6 which show the rear inlet side of the combustion heating furnace and the outlet side of the combustion chamber in detail.

The hot water heating furnace 50 may be configured as a hexagonal tube made of a steel plate and may have a structure in which at least one briquette is transversely disposed therein and a hot combustion gas capable of sufficiently blowing the briquettes around the outer circumferential surface of the briquette Sectional area of the pipe.

The upper portion of the hot water heating furnace 50 is supported so as to be prevented from bending or sagging against the load of the hot water in the water tank 80 while the lower portion V portion conveys heat to the water jacket 81, As a drainage groove 54 of the vinegar liquid flowing downward.

A briquetting combustion regulating plate (51) is installed at the rear inlet of the hot water heating furnace to appropriately block a large amount of combustion gas flowing through the inside and outside of the rolled briquettes, thereby controlling the ignition timing and the total burning time of the briquet.

In other words, the briquetting combustion regulating plate 51 needs to have various forms in which the size and density of the through holes are adjusted so as to control the ignition timing and the total burning time of the briquettes. Thus, various kinds of briquetting combustion regulating plates 51 are heated It should be easily removable in the year. For this purpose, a throttling plate hanger 52 is installed at the upper end of the inlet of the hot water heating flue by means of a hole provided in the briquette combustion regulating plate 51.

The briquetting transverse chin 53 is installed at the bottom of the inlet of the hot water heating flue to support the briquette so that it does not fall into the combustion chamber. As shown in the figure, there is a slight gap between the lower portion of the briquetting transverse chin 53 and the lower portion of the hot water heating burner, so there is no problem in the natural veneer discharge.

An additional requirement to maximize the effect of the briquetted transversal hot water heating year constructed as described above is that the flame of the flue gas coming from the combustion chamber outlet must last for a sufficiently long time so that the briquettes are ignited as late as possible.

To do this, we can think of a method of selectively placing small sized wood fuel at the bottom of the combustion chamber and large, large log fuel at the top of the combustion chamber, as shown below. A flame shielding plate 10 for effectively preventing the flame of the top-end wood fuel at the combustion stage without deteriorating the refueling workability at the time of opening and closing the combustion chamber door can be applied.

7 and 8. First, the flame blocking plate 10 for a wood boiler is rotatably coupled to the inside upper side of the combustion chamber inlet to prevent the flames inside the combustion chamber, especially the intense heat and flame coming out from the thick wood at the top of the combustion chamber 20 give.

When the flame blocking plate 10 is lifted and pushed into the combustion chamber, the blocking plate fixing protrusions support the a-shaped bending portion. The inlet of the combustion chamber is fully opened with the blocking wall of the flame blocking plate lifted up above the horizontal.

Preferably, the flame blocking plate 10 shields an area ranging from 0.3 to 0.6 times the inlet area of the combustion chamber with the blocking wall when the blocking wall is hanging down, and when the blocking wall is lifted upward, It is adjusted to an appropriate size so as to shield an area ranging from 0.1 to 0.3 times the entrance area of the combustion chamber with a blocking jaw which is shortened by a short line. The shielding area thus set effectively prevents strong flames and heat from the thick wood that is placed on the top of the combustion chamber 20 to be described later, and prevents inconveniences such as inserting and removing the combustion chamber or cleaning the residue of the combustion chamber bottom do.

The combustion chamber 20 for the wood boiler is formed in a shape of a shelf smaller than the inner space of the combustion chamber so that the wood can be drawn into the combustion chamber 30 in a state where the wood is placed on the top of the combustion chamber in a state where the vertical column and the horizontal tooth are combined. .

The vertical column is formed in a C-shape in cross section to vertically support at least one of four corners and both sides of the horizontal stand.

Preferably, there are three to six equidistantly spaced lateral planes on each side of the horizontal stand, and a clean six-foot to twelve-foot structure is arranged so that a sufficient amount of wood can be stacked beneath the horizontal scale without any obstacles do.

In this case, the flame and heat of the wood (fuel), which is placed at the bottom between the vertical columns, is appropriately escaped and transferred to the side wall of the combustion chamber. Further, the remaining heat of the bottom chest wood (fuel) is effectively introduced into the open portion of the C-shaped cross-section arranged to face the center of the combustion chamber 30, that is, the wood that is placed on top of the horizontal crook along the groove of the C- .

As a result, a very suitable heat and flame is transmitted to the uppermost timber, which makes it possible to place thick and large trees that are less likely to catch fire. Since the C-shaped section steel is widely distributed as a ready-made product of various sizes, it is possible to reduce the production cost as a whole, and when the C type steel material of various sizes is bought without any additional simulation, The number of columns and the number and spacing of the appropriate columns can be derived. The C-shaped steel has sufficient strength to resist buckling and a thin thickness that does not degrade thermal efficiency, providing a bottom-to-top sequential ignition capability that can provide high thermal efficiency and long-lasting flames.

The technical idea of the present invention has been described above with reference to specific embodiments. It should be understood that the technical idea of the present invention should be construed on the basis of the contents described in the following claims rather than the technical interpretation category of the embodiment.

10: Flame shield plate
20: Combustion zone
30: Combustion chamber
40: Combustion chamber door
41:
42: Year door
50: Hot water heating year
51: Briquette combustion control plate
52: throat hanger
53: Briquette transverse chin
54: Groove discharge groove
55: Wood veneer discharge hole
60: Waste heat recovery year
70: year of discharge
71: forced ejector
80: Water tank
81: Water jacket

Claims

A combustion chamber for burning wood;
A water jacket surrounding the combustion chamber as heating and circulating space for hot water;
A water tank which extends above the water jacket as a heat storage and storage space for hot water;
A hot water heating furnace disposed above the combustion chamber and having a duct cross-sectional area through which combustion gas can flow around an outer circumferential surface of the briquette in a state in which at least one briquette is transversely disposed therein; And
And a flue door for opening and closing the front outlet of the hot water heating flue so as to allow the briquettes to be drawn in or drawn out.

The method according to claim 1,
The hot water heating flue is formed of a hexagonal pipe made of a steel plate so that the upper portion of the upper portion is supported to prevent bending or sagging of a load of hot water in the water tank and the lower portion V portion is supported so as to be prevented from bending or sagging Wherein the briquette serves as a discharge groove for the veneer flowing down the briquettes.

3. The method of claim 2,
A waste heat recovery year disposed above the hot water heating cycle;
And a briquetting combustion control plate installed at a rear inlet of the hot water heating burner to adjust an ignition timing and a total burning time of the rolled briquettes.

The method of claim 3,
A control panel hanger capable of detachably attaching the briquetting combustion control plate to the upper and lower ends of the inlet of the hot water heating vessel and a briquetting transverse chin supporting the briquette to prevent the briquette from falling into the combustion chamber.

The method of claim 3,
The hot water heating cycle is inclined to a range of 1 to 5 degrees so that the wood vinegar is naturally discharged to the bottom of the combustion chamber,
Wherein the flue door is sized to open and close the outlet of the hot water heating flue and the inlet of the waste heat recovery flue at the same time.