CN102865600B - Civil solid fuel cooking heating furnace - Google Patents

Abstract

The invention relates to a civil solid fuel cooking heating furnace. A furnace body is composed of a combustion chamber, a fuel bin and a heat exchange chamber. The lower end of the combustion chamber and the lower end of the fuel bin are connected and form a fire hole. A secondary air distribution hole is arranged on the lateral wall of the combustion chamber, and the heat exchange chamber and a kang connection port are sequentially connected on one side on the upper portion of the combustion chamber. A water jacket is arranged on the periphery of the furnace wall of the furnace body, and a heat insulation layer is arranged between the furnace walls of the combustion chamber and the fuel bin and the water jacket. The civil solid fuel cooking heating furnace is efficient, energy-saving and convenient to use, has many functions such as emphasizing in cooking, kang burning, heat supply and water heating, adapts to various fuels, and is very suitable for being used by residents in rural areas in the north of our country.

Description

Solid fuel civil cooking heating stove

technical field

The invention relates to a solid-fuel domestic stove, in particular to a multi-purpose stove for cooking, heating (water heating and kang), and the like.

Background technique

my country is extremely rich in biomass energy, and with the development of agriculture and forestry, there will be more and more biomass resources. The main problem in the current use of biomass energy is that the energy utilization rate is very low, and the use is very unreasonable, resulting in resource loss. For example, traditional earthen stoves have been used in rural areas to burn firewood and straw, which has low combustion efficiency and high labor intensity, which also causes damage to the environment.

At present, although there are stoves that use biomass fuel for cooking and heating in the market, they all have certain structural defects, resulting in insufficient fuel combustion, low thermal efficiency, and a lot of smoke and dust during combustion, and weaken some of its functions, such as the cooking function. . Chinese Patent Announcement No. CN201121918Y discloses a biomass fuel cooking and heating furnace with a water jacket. The water jacket is installed in the furnace, resulting in a low furnace temperature, which affects insufficient fuel combustion, reduces thermal efficiency, and produces higher smoke. gas. Chinese Patent Announcement No. CN202229233U discloses a multifunctional civil biomass fuel combustion furnace with a water jacket, but its fuel bin and combustion chamber directly heat the water jacket through the furnace wall, thereby reducing the temperature of the furnace, resulting in insufficient combustion , the smoke produced is high. Moreover, the above-mentioned stove, due to the heat exchange in the furnace, greatly affects the heat required for cooking, weakens the cooking power, and even cannot boil water.

Contents of the invention

The purpose of the present invention is to provide a solid fuel civil cooking heating stove which is convenient to use, safe and hygienic, highly efficient and energy-saving, suitable for a wide range of fuels, sustainable combustion, integrating cooking, heating and kang-burning, and can emphasize any function.

The present invention is achieved through the following technical solutions.

A solid fuel civil cooking and heating furnace. The furnace body is composed of a combustion chamber, a fuel bin and a heat exchange chamber. The fuel bin is provided with a feeding port. The ash hopper is set under the bridge, the side wall of the combustion chamber has secondary air distribution holes, the upper end of the combustion chamber is provided with a stove mouth, and the upper side of the combustion chamber is connected to the heat exchange chamber and the kang opening in turn. A water jacket is provided, and a heat insulation layer is provided between the furnace wall of the combustion chamber and the fuel bin and the water jacket.

The present invention can also be further realized through the following technical measures.

There are secondary air distribution holes on the furnace wall above the aforementioned burner.

The secondary air distribution hole on the side wall of the combustion chamber and above the burner is connected to the atmosphere through the air duct.

The furnace wall above the aforementioned burner is a circular arc transition type, which can guide the flame and prevent the fuel from being stuck when it sinks.

The side wall of the aforementioned combustion chamber is a downward contracting inclined structure, which reduces the dead space of the fuel at the bottom of the combustion chamber and can guide the flame to escape from the combustion chamber.

The middle section of the side wall of the aforementioned inclined structure is a vertical structure, and its secondary air distribution hole is located on the side wall of the vertical part to prevent dust from blocking the secondary air distribution hole.

The center of the aforementioned stove mouth deviates from the center of the fire outlet of the combustion chamber from the side where the combustion chamber communicates with the heat exchange chamber, so that the flame is closer to the center of the bottom of the cooker when the flame flutters to one side due to the induced wind effect, and the cooking efficiency is higher.

The foregoing also includes a stove mouth cover plate, and the stove mouth cover plate is placed on the stove mouth.

The aforementioned heat exchange chamber is equipped with a number of heat exchange tubes communicating with the water jacket to increase the heat exchange area and achieve higher efficiency.

There is a rotatable movable baffle between the combustion chamber and the heat exchange chamber of the aforementioned solid fuel civil cooking heating stove.

In addition to being used as a daily cooking stove, the invention can also generate hot water by heating the water jacket; the hot smoke generated by combustion is discharged from the chimney through the opening of the kang, and the heat of the smoke is used to warm the kang. Because the present invention adopts the heat insulation layer between the furnace wall of the combustion chamber and the fuel bunker and the water jacket, the heat generated by the combustion is concentrated to give priority to the cooking function, and secondly, hot water or hot kang is carried out through the waste heat of the flue gas; when it is not necessary to carry out When cooking, the stove mouth cover plate can be placed on the stove mouth, and the movable baffle plate between the combustion chamber and the heat exchange chamber can be converted to change the heat running path and emphasize the function of hot water or hot kang. In the combustion system of the present invention, the primary air enters the burner of the combustion chamber sequentially from the ash hopper and the furnace bridge, and the secondary air enters from the secondary air distribution hole on the side wall of the combustion chamber. There is a secondary air distribution hole to make the fuel burn more fully and the flame more stable; the secondary air can enter the secondary air distribution hole from the ash hopper connected to the air pipe, but in order to better control the fuel combustion, the primary and secondary air are exchanged. Without interference, it is preferred to directly enter the secondary air distribution hole from the furnace body through the air duct.

The solid fuel civil cooking and heating stove of the present invention is highly efficient, energy-saving, convenient to use, safe and reliable, has multiple functions such as cooking, kang heating, hot water heating, etc., and the fuel is widely used, and can be biomass block material, molding It is very suitable for rural residents in northern my country to use.

Description of drawings

Fig. 1 is a structural schematic diagram of a solid fuel civil cooking heating stove.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings.

As shown in Figure 1, a solid fuel civil cooking heating furnace, the furnace body is composed of a combustion chamber 9, a fuel bin 5 and a heat exchange chamber 13, and there is a rotatable movable baffle 15 between the combustion chamber 9 and the heat exchange chamber 13 A water jacket 2 is arranged around the furnace wall of the furnace body, and a heat insulating layer 3 is arranged between the furnace wall of the combustion chamber 9 and the fuel bin 5 and the water jacket 2 .

The fuel bin 5 is provided with a charging port 1, the combustion chamber 9 communicates with the lower end of the fuel bin 5 and forms a burner 6, a movable furnace bridge 7 is installed under the burner 6, an ash bucket 8 is arranged under the furnace bridge 7, and the side wall of the combustion chamber 9 is facing The lower retractable inclined structure has a vertical structure in the middle section, and there are secondary air distribution holes 4 on it. The furnace wall above the burner 6 is a circular arc transition type, which is a semicircle in this example, and has a secondary air distribution hole 4 on it; the side wall of the combustion chamber 9 and the secondary air distribution hole 4 above the burner 6 pass through The air duct communicates with the atmosphere. The upper end of the combustion chamber 9 is provided with a stove mouth 17, and the center of the stove mouth 17 deviates from the center of the fire outlet of the combustion chamber 9 from the side where the combustion chamber 9 communicates with the heat exchange chamber 13, and the center distance is 15-20 mm; The heat exchange chamber 13 and the kang opening 14 are sequentially connected. The heat exchange chamber 13 is equipped with a number of heat exchange tubes 11 communicating with the water jacket 2. The heat exchange tubes 11 are embedded with a movable dust scraper 12 to clean the heat exchange. Dust accumulation on the pipe 11, there is a dust cleaning chamber 10 below the dust scraping board 11.

When the solid fuel civil cooking heating stove is working, open the cover of the feeding port 1, add fuel to the fuel bin 5, light the fuel at the bottom of the fuel bin 5 with a fire source, and at this time, the movable baffle 15 can be transferred to the hot kang stall, that is, the horizontal position , more conducive to wind, easier to ignite. The air enters the furnace bridge 7 through the ash hopper 8 and conveys the primary air upward to support combustion. The flame enters the combustion chamber 9 from the burner 6 along with the air flow. . Flame rises in combustion chamber 9 and sprays toward stove mouth 17, can be used for cooking. At this time, if the movable baffle 15 is turned to the water heating gear, that is, the vertical position, the high-temperature flue gas detours in the heat exchange chamber 13 to heat the water in the heat exchange tube 11, and the hot water in the water jacket 2 is output through the pipe for heating Or wash, the flue gas passes through the kang road from the opening 14 of the kang or directly (when no heating is needed) is discharged to the outside through the chimney; if it is necessary to emphasize the function of the heating, the movable baffle 15 can be transferred to the level of the heating position, the high-temperature flue gas will quickly pass through the upper part of the heat exchange chamber 13 and directly enter the kang road to heat the kang, increasing the temperature and speed of the kang. When need not carry out cooking and heating at the same time, can take away the cooking utensil of stove mouth 17, place stove mouth cover plate 16, can improve flue gas temperature about 100 ℃, heat enters heat exchanger 13 or kang road fully, water heating and hot kang The effect is better, and the effect is better if the stove mouth cover plate 16 is set as a heat-insulating type.

As the combustion process progresses, the fuel is gradually consumed, and the fuel automatically drops in the fuel bin 5 due to gravity, and the fuel is replenished through the burner 6, and the fuel in the fuel bin 5 can be replenished at any time from the feeding port 1, and the fuel produced after the fuel is burned out The furnace ash sinks down to the ash hopper, and the ash hopper can be taken out.

Claims (8)

1. a solid fuel domestic cooking heating stove, body of heater is by combustion chamber, Bunker and Heat Room composition, Bunker is provided with charge door, combustion chamber and Bunker lower end communicate and form burner, movable grate is housed below burner, under grate, ash bucket is set, the sidewall of combustion chamber has secondary wind distributing hole, upper end, combustion chamber is provided with stove mouth, side, top, combustion chamber is communicated with Heat Room and logical a heatable brick bed mouth successively, around the furnace wall that it is characterized in that body of heater, water jacket is set, between the furnace wall of described combustion chamber and Bunker and water jacket, thermal insulation layer is set, furnace wall above described burner is arc transitional type, and furnace wall has secondary wind distributing hole.

2. solid fuel domestic cooking heating stove according to claim 1, is characterized in that the secondary wind distributing hole above described sidewall of combustion chamber and burner is communicated with air by airduct.

3. solid fuel domestic cooking heating stove according to claim 1, is characterized in that the sidewall of described combustion chamber is retracted downward formula incline structure.

4. solid fuel domestic cooking heating stove according to claim 3, it is characterized in that the sidewall stage casing of described incline structure is vertical structure, its secondary wind distributing hole is positioned on the sidewall of vertical portion.

5. solid fuel domestic cooking heating stove according to claim 1, is characterized in that the center of bias combustion room, the side crater that the center of stove mouth is communicated with from combustion chamber with Heat Room.

6. solid fuel domestic cooking heating stove according to claim 1, characterized by further comprising stove velar plate, and described stove velar plate is placed on stove mouth.

7. solid fuel domestic cooking heating stove according to claim 1, is characterized in that Heat Room is built with the some heat exchanger tubes communicated with water jacket.

8. the solid fuel domestic cooking heating stove according to the arbitrary claim of claim 1 ~ 7, is characterized in that there is rotatable sideboard between described combustion chamber and Heat Room.