CN201497019U - Energy-saving household cooker - Google Patents

Abstract

An energy-saving household stove, including a furnace body, a furnace, and a furnace ring for erecting a pot body. A combustion chamber is formed in the furnace, and a stove grate is arranged at the bottom of the combustion chamber. The combustion chamber passes through the stove grate It is connected to the air inlet channel, and the combustion chamber is also connected to the furnace channel for adding fuel. The utility model has the advantages of less heat loss and high thermal efficiency.

Description

Energy-saving household stove

technical field

The utility model relates to an energy-saving cooker, in particular to a household cooker using solid fuels such as firewood, straw and coal.

Background technique

The utility model relates to a household stove. At present, in the vast rural areas of our country, most rural families still generally use earthen or brick-concrete stoves, which mainly burn wood, reed poles or coal. The chimney is composed of the furnace, the combustion chamber, and the flue is straight through. The air enters the combustion chamber from the stove door through the furnace to support the combustion. In this way, the flame produced by the combustion is deflected along the flue to the direction of the chimney, and the cooking utensils are heated unevenly. The heat is easily radiated to the furnace and flue, and the heat spreads over a large range, resulting in low heat energy utilization and high fuel consumption. Since the fuel is mainly wood, it seriously damages forest resources. At present, liquefied gas has been widely used in cities. Stoves, but liquefied gas is still expensive compared to rural households, and the natural villages are relatively scattered, and the transportation is inconvenient. Under such circumstances, it is a feasible way to reduce the consumption of wood fuel as much as possible so as to achieve the purpose of protecting forest resources.

my country's vast number of scientific and technological workers and enterprises have done a lot of work on energy saving and consumption reduction. The CN 2427752Y patent provides a conveniently mobile household stove that is suitable for rural families. It should have high thermal energy utilization and low fuel consumption. Small pluses. The utility model household stove adopts a frame structure, which is composed of a frame, heat insulation material, refractory bricks, furnace passage, combustion chamber, flue, and chimney. The combustion chamber is a semi-closed form with two openings, one of which is for feeding The mouth is located on the side and facing the furnace so that the furnace can be directly connected to the combustion chamber. The other opening is that the combustion port is located on the upper part of the combustion chamber and extends into the flue above the combustion chamber. The stove panel corresponding to the combustion port is also opened accordingly. The cooking utensils are placed in this opening, and the tail of the flue is connected to the chimney. After adopting such a structure, since the combustion chamber is a semi-closed form, after the furnace directly leads to the combustion chamber, it needs to pass upward through the combustion port to the flue In this way, the heat generated by combustion can be concentrated under the cooker, and at the same time, the suction force of the chimney makes the flame and smoke generated by combustion evenly flow into the flue along the periphery of the combustion port, forming a circular fire path, and the flame and smoke are under the cooker It can be evenly distributed, thereby improving the utilization rate of heat energy. In addition, this prior art adopts a frame-type structure, and each component is integrated into a relatively independent whole with a compact structure, so the occupied area is small and the movement is more convenient.

However, this technology still has obvious disadvantages. After passing through the bottom of the pot, a large amount of heat energy remaining in the hot flue gas is lost with the flue and is not utilized. Secondly, the combustion chamber is not closed, and the top of the combustion port is still connected to the atmosphere through the gap between the bottom of the pot and the furnace body, resulting in a large amount of heat loss, although the wind pulling effect of the flue can weaken this loss. Finally, the annular inlet of the flue is located near the bottom of the pot. Under the action of pulling the wind from the flue, the hot flue gas from the combustion chamber will first flow into the flue without passing through the bottom of the pot, thus losing the opportunity to heat the bottom of the pot and wasting heat energy.

Contents of the invention

The utility model aims to solve the shortcoming of low heat efficiency of the existing household cooker, and provides a household cooker with high heat efficiency.

An energy-saving household stove, including a furnace body, a furnace, and a furnace ring for erecting a pot body. A combustion chamber is formed in the furnace, and a stove grate is arranged at the bottom of the combustion chamber. The combustion chamber passes through the stove grate It is connected to the air inlet, and the combustion chamber is also connected to the furnace for adding fuel and the flue for exhausting smoke. It is characterized in that: a multi-hole heat storage radiant panels.

Further, the furnace ring has a shape that can cooperate with the pot body to form a closed furnace, and the entrance of the flue constitutes the only flue gas outlet of the closed combustion chamber.

Further, the entrance of the flue is located at a lower position of the combustion chamber, and the heat storage radiation plate is higher than the entrance of the flue and lower than the bottom of the pot.

Further, the heat storage radiation plate is in the form of a conical ring surface with a large upper part and a smaller lower part, the upper side is connected to the side wall of the furnace, and the lower side is supported on the bottom of the furnace, and the tapered annular surface faces the bottom of the pot.

Further, the furnace and the bottom of the furnace are lined with a heat insulating material layer.

Further, the exhaust gas drawn from the flue passes around the water heater and exchanges heat with the cold water in the water heater.

Further, the tail gas drawn out through the flue is heat-exchanged with the cold air that will enter the furnace through a heat exchanger.

Further, the heat exchanger is arranged under the heat storage radiant plate and in the furnace space at the entrance of the flue.

Further, a blower is connected to the heat exchanger.

When the utility model is in use, the law of heat rising and cooling of the airflow is utilized, and the flame first rushes to the bottom of the pot, and then returns to the entrance of the flue through the heat storage radiation plate, and firstly fully utilizes the heat of the flame. The heat storage radiant plate is made of high temperature resistant materials, which can withstand flame radiation and flue gas erosion at 1200-1600°C for a long time. The smoke generated by fuel combustion passes through the holes of the porous heat storage radiant plate, and the heat carried by the flue gas is partially absorbed. Absorbed by the porous heat storage radiant plate, the temperature of the heat storage plate rises to 100% after being heated, and at the same time radiate heat to the heated vessel, the radiant heat absorbed by the heated vessel can account for 20-40% of the total energy, or even higher, after a certain period of time After being in a balanced state, while absorbing the heat of the flue gas, it radiates energy to the heated vessel; the flue gas passing through the heat storage radiant plate can also transfer energy to the water heater placed on the flue flow channel, and can enter after the water heater absorbs heat. The heat exchanger transmits energy to the combustion air, and then the flue gas enters the flue and is discharged through the chimney. At this time, the temperature is already very low.

Heating the cool air that reacts with the solid fuel helps to increase the flame temperature and achieve complete combustion.

The utility model has the advantages of less heat loss and high thermal efficiency.

Description of drawings

Fig. 1 is the schematic diagram of the first embodiment of the present utility model

Figure 1-1 is a side view of Figure 1

Figure 1-2 is a top view of Figure 1

Figure 1-3 is a schematic diagram of the utility model using a circular stove grate

Fig. 2 is the schematic diagram of the second embodiment of the utility model

Figure 2-1 is a side view of Figure 2

Figure 2-2 is a top view of Figure 2

Fig. 3 is the schematic diagram of the third embodiment of the present utility model

Figure 3-1 is a side view of Figure 3

Figure 3-2 is a top view of Figure 3

Fig. 4 is the schematic diagram of the fourth embodiment of the present utility model

Figure 4-1 is a side view of Figure 4

Figure 4-2 is a top view of Figure 4

Figure 5 is a schematic diagram of the combined use of a heat exchanger and a water heater

Figure 5-1 is a side view of Figure 5

Figure 5-2 is a top view of Figure 5

Detailed ways

Embodiment one

Refer to Figure 1, 1-1, 1-2, 1-3

The energy-saving household stove includes a furnace body 1, a furnace, and a furnace ring for erecting a pot body. A combustion chamber 2 is formed in the furnace, and a stove grate 3 is arranged at the bottom of the combustion chamber 2. The combustion chamber 2 passes through The stove grate 3 communicates with the air inlet channel 4, and the combustion chamber 2 also communicates with the furnace duct 5 for adding fuel and the flue 6 for removing smoke, and it is characterized in that: the combustion chamber 2 is connected to the A porous thermal storage radiation plate 7 is blocked between the entrances of the flue 6 .

The furnace ring has a shape that can cooperate with the pot body to form a closed furnace, and the entrance of the flue 6 constitutes the only flue gas outlet of the closed combustion chamber 2 .

The entrance of the flue 6 is located at the lower position of the combustion chamber 2, and the heat storage radiation plate 7 is higher than the entrance of the flue and lower than the bottom of the pot.

The heat storage radiant plate 7 is a conical annular surface with a large upper part and a smaller lower part. Its upper side is connected to the side wall of the furnace, and its lower side is supported on the bottom of the furnace. The conical annular surface faces the bottom of the pot.

The furnace hearth and furnace bottom are lined with a layer of heat insulating material.

Embodiment two

Refer to Figure 2, 2-1, 2-2

The difference between this embodiment and the first embodiment is that the exhaust gas drawn from the flue 6 passes around the water heater 8 and exchanges heat with the cold water in the water heater 8 . The rest is the same.

Embodiment three

Refer to Figure 3, 3-1, 3-2

The difference between the present embodiment and the first embodiment is that the tail gas drawn out through the flue 6 exchanges heat with the cold air that will enter the furnace through the heat exchanger 9 .

The heat exchanger 9 is arranged in the furnace space between the bottom of the heat storage radiant plate and the entrance of the flue 6 . The rest is the same.

Embodiment four

Refer to Figure 4, 4-1, 4-2

The difference between this embodiment and the third embodiment is that: the heat exchanger 9 is connected with a blower 10 . The rest is the same.

The content described in the embodiments of this specification is only an enumeration of the realization forms of the utility model concept, and the protection scope of the utility model should not be regarded as being limited to the specific forms stated in the embodiments, and the protection scope of the utility model also extends to Equivalent technical means that those skilled in the art can think of according to the concept of the utility model.

Claims (9)

1. An energy-saving household stove, including a furnace body, a furnace, and a furnace ring for erecting a pot body. A combustion chamber is formed in the furnace, and a stove grate is arranged at the bottom of the combustion chamber. The combustion chamber passes through the The stove grate is connected to the air inlet, and the combustion chamber is also connected to the furnace for adding fuel and the flue for exhausting smoke. It is characterized in that: the entrance of the combustion chamber and the flue is blocked There are porous thermal storage radiant panels. 2. The energy-saving household stove according to claim 1, characterized in that: said hoop has a shape that can cooperate with the pot body to form a closed furnace, and the entrance of said flue constitutes the closed combustion chamber. The only flue gas outlet. 3. The energy-saving household stove according to claim 2, characterized in that: the entrance of the flue is located at a lower position of the combustion chamber, and the heat storage radiation plate is higher than the entrance of the flue, lower than the entrance of the flue. at the bottom of the pot. 4. The energy-saving household stove as claimed in claim 3, characterized in that: the heat storage radiant plate is a tapered annular surface with a large top and a small bottom, the upper side of which is connected to the side wall of the furnace, and the lower side is supported on the bottom of the furnace. The conical ring surface faces the bottom of the pot. 5. The energy-saving household stove according to claim 4, characterized in that: the furnace hearth and the bottom of the furnace are lined with a layer of heat-insulating material. 6. The energy-saving household stove according to claim 5, characterized in that: the exhaust gas drawn from the flue passes around the water heater and exchanges heat with the cold water in the water heater. 7. The energy-saving household stove as claimed in claim 5 or 6, characterized in that: the tail gas drawn out through the flue conducts heat exchange with the cold air that will enter the furnace through a heat exchanger. 8. The energy-saving household stove according to claim 7, wherein the heat exchanger is arranged under the heat storage radiation plate and in the furnace space at the entrance of the flue. 9. The energy-saving household stove according to claim 8, characterized in that: said heat exchanger is connected with a blower.

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