Semi-gasification furnace energy-saving water heater

Abstract

The utility model relates to the technical field of water heaters, and discloses a semi-gasification furnace energy-saving water heater, which comprises a semi-gasification furnace, a water heater and a waste heat recovery furnace, a combustion chamber is arranged in the semi-gasification furnace, and a smoke exhaust pipe I and a heating cavity are arranged in the water heater. The upper combustion chamber is communicated with the lower combustion chamber through a secondary oxygen supply contraction burner, the secondary oxygen supply contraction burner is communicated with an oxygen supply pipe, and the upper combustion chamber is provided with an air port. And meanwhile, the combustion efficiency is improved, the energy utilization rate is high, and the service life of equipment is long.

Description

Technical Field

[0001] This utility model relates to the field of water heater technology, specifically to a semi-gasification furnace energy-saving water heater. Background Technology

[0002] A straw gasifier, also known as a straw gasifier, environmentally friendly and energy-saving gasifier, straw gasifier, household straw gasifier, biomass gasifier, or high-efficiency biomass gasifier, is a type of fuel appliance that is environmentally friendly, energy-saving, and clean, suitable for use by farmers in rural areas and towns. It primarily uses straw or firewood as fuel, obtaining usable energy by burning wood inside the furnace for purposes such as boiling water, cooking rice, and drying food.

[0003] A semi-gasifier is a device used to achieve more complete combustion. It is also sometimes called a quasi-gasifier. The secondary air function is very significant, serving two purposes: firstly, to supplement oxygen, and secondly, to further enhance the turbulence of the flue gas, resulting in more complete combustion. This device relies heavily on supplemental air.

[0004] Chinese patent document CN218210079U discloses a gasification furnace-water heater composite device, including a combustion chamber and a furnace bridge. The combustion chamber has an ash discharge port at the bottom and a feed inlet at the top. The device is characterized by: a primary air inlet at the bottom of the combustion chamber; an inner liner inside the combustion chamber located on the furnace bridge; an annular cavity formed between the inner liner and the combustion chamber; a secondary air inlet connected to the annular cavity; air inlets surrounding the upper and lower parts of the inner liner; a liquid heat exchanger connected to the top of the combustion chamber; and a gas heat exchanger connected to the top of the liquid heat exchanger.

[0005] Chinese patent document CN211739487U discloses an integrated device for waste heat recovery and utilization from a biomass gasification furnace, including a high-temperature waste heat flue gas inlet pipe. This integrated device utilizes a combustion chamber, a high-temperature heat exchange section, a medium-temperature heat exchange section, a low-temperature heat exchange section, and a waste heat steam boiler in conjunction with these components. The combustion chamber, high-temperature heat exchange section, medium-temperature heat exchange section, and low-temperature heat exchange section convert heat in the waste heat flue gas, thereby heating the heat transfer oil for use in the production workshop. Simultaneously, the waste heat steam boiler heats water into high-temperature steam, which is then supplied for production and domestic use, thus fully utilizing the waste heat flue gas.

[0006] Existing technologies have the following shortcomings: the exhaust gas carries away a large amount of dust, the water heater has a low heat conversion rate, and the semi-gasification furnace has a short service life. Utility Model Content

[0007] To address the technical problem of reducing flue gas emissions while improving heat utilization, this utility model provides a semi-gasification furnace energy-saving water heater, comprising a semi-gasification furnace and a waste heat recovery furnace. The semi-gasification furnace contains a combustion chamber, and the water heater contains an exhaust pipe and a heating chamber. The combustion chamber comprises an upper combustion chamber and a lower combustion chamber, which are connected by a secondary oxygen supply shrink burner connected to an oxygen supply pipe. The upper combustion chamber is equipped with an air vent.

[0008] To ensure more complete fuel combustion, the secondary oxygen supply shrink burner is connected to multiple oxygen supply pipes, which are evenly arranged horizontally around the secondary oxygen supply shrink burner.

[0009] To prevent damage to the secondary heating shrink nozzle due to excessive temperature, a cooling chamber is provided around the secondary heating shrink nozzle, and the cooling chamber is connected to the heating chamber.

[0010] To further improve heat utilization, the upper combustion chamber and the lower combustion chamber are respectively surrounded by an upper heat absorption chamber and a lower heat absorption chamber, and the upper heat absorption chamber is connected to the heating chamber and the cooling chamber.

[0011] For ease of installation and manufacturing, the upper heat absorption chamber and the lower heat absorption chamber are connected by an elbow.

[0012] To further improve heat utilization, multiple exhaust pipes are arranged longitudinally inside the heating chamber, and multiple ribs are arranged laterally inside the heating chamber. The ribs are arranged alternately laterally inside the heating chamber, and the liquid flows in an S-shape inside the heating chamber.

[0013] Preferably, the waste heat recovery furnace includes a second exhaust pipe, a waste heat chamber, and a second rib plate. The second rib plate is arranged alternately and laterally in the waste heat chamber, and the liquid flows in an S-shape in the waste heat chamber.

[0014] Preferably, the first exhaust pipe is connected to the second exhaust pipe via a duct, the heating chamber is connected to the waste heat chamber via a water pipe, the lower heat absorption chamber is provided with a water outlet, and the waste heat chamber is provided with a water inlet, thus increasing heat exchange efficiency through reverse heat exchange.

[0015] To prevent blockage of the exhaust pipe and improve heat exchange efficiency, a connecting rod is inserted into the exhaust pipe, and multiple dust baffles are alternately and obliquely arranged on the connecting rod.

[0016] To improve the heat exchange effect of the waste heat recovery furnace, a spiral rod is installed inside the second flue pipe, and multiple raised ribs are provided on the inner wall of the second flue pipe. The spiral rod and raised ribs increase the contact area and improve the heat exchange effect.

[0017] This utility model has the following beneficial effects:

[0018] 1. The secondary combustion nozzle of this utility model gathers the flue gas and allows it to burn fully in the upper combustion chamber, solving the problem of excessive flue gas and achieving a smokeless effect. At the same time, it increases combustion efficiency, ensuring that the chemical energy in the fuel is converted into heat energy to the maximum extent, thereby improving energy utilization efficiency, increasing the temperature of the heating chamber and the waste heat chamber, and thus increasing the water temperature; and reducing the harmful substances produced by incomplete combustion of fuel.

[0019] 2. Extend equipment service life: The high-temperature contact surfaces in the furnace are all cooled by water walls, which effectively reduces the damage caused by high temperature and extends the service life by several times. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of an embodiment of the semi-gasification furnace energy-saving water heater of this utility model;

[0021] Figure 2 for Figure 1 Front view;

[0022] Figure 3 for Figure 2 AA section view;

[0023] Figure 4 This is a schematic diagram of the internal structure of the semi-gasification furnace energy-saving water heater of this utility model;

[0024] Figure 5 for Figure 4 Front view;

[0025] Figure 6 for Figure 5 BB section view;

[0026] Figure 7 This is a structural diagram of the connecting rod and the dust baffle.

[0027] Figure 8 This is a cross-sectional view of exhaust pipe 2. Detailed Implementation

[0028] The following detailed description illustrates the specific implementation method:

[0029] 1. The reference numerals in the accompanying drawings of the instruction manual include: semi-gasification furnace 1, waste heat recovery furnace 2, flue pipe 201, waste heat chamber 202, rib plate 203, combustion chamber 3, upper combustion chamber 301, lower combustion chamber 302, air outlet 303, ash removal port 304, furnace opening 305, upper heat absorption chamber 306, lower heat absorption chamber 307, water heater 4, flue pipe 1 401, heating chamber 402, rib plate 1 403, secondary oxygen supply shrink burner 5, air duct 6, oxygen supply pipe 7, cooling chamber 8, elbow 9, water pipe 10, water outlet 11, water inlet 12, flue outlet 13, connecting rod 14, dust baffle 15, spiral baffle strip 16, raised rib 17, limiting rod 18. Example 1

[0030] like Figure 1-8 As shown, a semi-gasification furnace energy-saving water heater includes a semi-gasification furnace 1 and a waste heat recovery furnace 2. The semi-gasification furnace 1 is provided with a combustion chamber 3. The water heater 4 is provided with a flue pipe 401 and a heating chamber 402. The heating chamber 402 is filled with water to be heated. The combustion chamber 3 includes an upper combustion chamber 301 and a lower combustion chamber 302. The upper combustion chamber 301 and the lower combustion chamber 302 are connected by a secondary oxygen supply shrink nozzle 5. The size of the secondary oxygen supply shrink nozzle 5 is smaller than the size of the upper combustion chamber 301 and the lower combustion chamber 302. The secondary oxygen supply shrink nozzle 5 is connected to an oxygen supply pipe 7. The upper combustion chamber 301 is provided with an air vent 303 and an ash removal port 304. The lower combustion chamber 302 is provided with a furnace opening 305 for placing fuel.

[0031] The secondary oxygen supply shrink nozzle 5 is connected to three oxygen supply pipes 7. The oxygen supply pipes 7 are evenly arranged horizontally around the secondary oxygen supply shrink nozzle 5. The secondary oxygen supply shrink nozzle 5 and the oxygen supply pipes 7 are simultaneously wrapped by a cooling chamber 8.

[0032] The upper combustion chamber 301 and the lower combustion chamber 302 are respectively surrounded by an upper heat absorption chamber 306 and a lower heat absorption chamber 307. The upper heat absorption chamber 306 is connected to the heating chamber 402 and the cooling chamber 8.

[0033] The upper heat absorption chamber 306 and the lower heat absorption chamber 307 are connected by the elbow 9.

[0034] Multiple exhaust pipes 401 are arranged longitudinally inside the heating chamber 402, and multiple ribs 403 are arranged laterally inside the heating chamber 402. The exhaust pipes 401 are simultaneously inserted into the connection holes of the multiple ribs 403. The ribs 403 are arranged alternately laterally inside the heating chamber 402. For two adjacent ribs 403, the left side of one is not connected to the heating chamber 402, the right side of the other is not connected to the heating chamber 402, and the remaining sides are connected to the interior of the heating chamber 402, so that the liquid flows downward in an S-shape inside the heating chamber 402.

[0035] The waste heat recovery furnace 2 includes a second exhaust pipe 201, a waste heat chamber 202, and a second rib plate 203. The second exhaust pipe 201 is simultaneously inserted into the connection holes of multiple second rib plates 203. The second rib plates 203 are arranged alternately and laterally in the waste heat chamber 202. For two adjacent second rib plates 203, the left side of one plate is not connected to the waste heat chamber 202, the right side of the other plate is not connected to the waste heat chamber 202, and the remaining sides are connected to the interior of the waste heat chamber 202, so that the liquid flows upward in an S-shape in the waste heat chamber 202.

[0036] The first exhaust pipe 401 is connected to the second exhaust pipe 201 via the air duct 6. The heating chamber 402 is connected to the waste heat chamber 202 via the water pipe 10. The lower heat absorption chamber 307 is provided with a water outlet 11. The waste heat chamber 202 is provided with a water inlet 12 and an exhaust outlet 13.

[0037] A connecting rod 14 is inserted into the exhaust pipe 401. Multiple dust baffles 15 are alternately inclined in different directions on the connecting rod 14. The dust baffles 15 are semi-circular arcs. When dust removal is required, the connecting rod 14 is lifted and shaken.

[0038] The second exhaust pipe 201 is provided with a spiral baffle 16 inside, and multiple protruding ribs 17 are provided on the inner wall of the second exhaust pipe 201. The top of the spiral baffle 16 and the top of the connecting rod 14 are provided with limiting rods 18. The limiting rods 18 facilitate lifting and prevent the spiral baffle 16 from falling. The spiral baffle 16 and the protruding ribs 17 increase the contact area and improve the heat exchange effect.

[0039] Liquid flow: It flows upward in an S-shape from the waste heat chamber 202 at the inlet 12, enters the heating chamber 402 containing the exhaust pipe 401 through the external water pipe 10, flows downward in an S-shape in the heating chamber 402 into the upper heat absorption chamber 306 and the cooling chamber 8, enters the lower heat absorption chamber 307 through the elbow 9, and is finally discharged from the outlet 11.

[0040] Flue gas flow: The flue gas generated by the combustion of fuel in the lower combustion chamber 302 is gathered in the upper combustion chamber 301 by the secondary oxygen supply shrink burner 5 and fully combusted. Then it enters the first exhaust pipe 401, enters the second exhaust pipe 201 through the external air duct 6, and is finally discharged from the exhaust port 13.

[0041] The above descriptions are merely embodiments of this utility model. Commonly known structures and characteristics are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field prior to the application date or priority date, are knowledgeable of all existing technologies in that field, and possess the ability to apply conventional experimental methods prior to that date. Therefore, those skilled in the art can, based on the guidance provided in this application, improve and implement this solution in conjunction with their own capabilities. Typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A semi-gasification furnace energy-saving water heater, comprising a semi-gasification furnace, a water heater and a waste heat recovery furnace, a combustion chamber is arranged in the semi-gasification furnace, a smoke exhaust pipe I and a heating cavity are arranged in the water heater, characterized in that, The combustion chamber comprises an upper combustion chamber and a lower combustion chamber, the upper combustion chamber and the lower combustion chamber are communicated by a secondary air supply contraction nozzle, the secondary air supply contraction nozzle is communicated with an oxygen supply pipe, and the upper combustion chamber is provided with an air inlet.

2. The semi-gasifier energy saving water heater according to claim 1, characterized in that: The secondary air supply contraction nozzle is communicated with multiple oxygen supply pipes, and the oxygen supply pipes are uniformly arranged around the secondary air supply contraction nozzle in the transverse direction.

3. The semi-gasifier energy saving water heater according to claim 2, characterized in that: The secondary air supply contraction nozzle is wrapped with a cooling cavity, and the cooling cavity is communicated with the heating cavity.

4. The semi-gasifier energy saving water heater according to claim 3, characterized in that: The upper combustion chamber and the lower combustion chamber are respectively wrapped with an upper heat absorption cavity and a lower heat absorption cavity, and the upper heat absorption cavity is communicated with the heating cavity and the cooling cavity.

5. The semi-gasifier energy saving water heater according to claim 4, wherein: The upper heat absorption cavity and the lower heat absorption cavity are communicated by an elbow.

6. The semi-gasifier energy saving water heater according to claim 5, characterized in that: Multiple smoke exhaust pipes are longitudinally arranged in the heating cavity, multiple rib plates are transversely arranged in the heating cavity, the rib plates are alternately arranged in the heating cavity in sequence, and liquid flows in the heating cavity in an S shape.

7. The semi-gasifier energy saving water heater according to claim 6, wherein: The waste heat recovery furnace comprises a smoke exhaust pipe, a waste heat cavity and a rib plate, the rib plates are alternately arranged in the waste heat cavity in sequence, and liquid flows in the waste heat cavity in an S shape.

8. The semi-gasifier energy saving water heater according to claim 7, characterized in that: The smoke exhaust pipe is communicated with the smoke exhaust pipe by an air pipe, the heating cavity is communicated with the waste heat cavity by a water pipe, the lower heat absorption cavity is provided with a water outlet, and the waste heat cavity is provided with a water inlet.

9. The semi-gasifier energy saving water heater according to claim 8, wherein: A connecting rod is arranged in the smoke exhaust pipe, and multiple dust baffle plates are alternately and obliquely arranged on the connecting rod.

10. The semi-gasifier energy saving water heater according to claim 9, characterized in that: A spiral disturbance strip is arranged in the smoke exhaust pipe, and multiple convex rib plates are arranged on the inner wall of the smoke exhaust pipe.

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