Three-return-stroke three-time vaporization return combustion heating furnace
By introducing a water jacket and Z-shaped flue design into the heating furnace, the water flow is heated and vaporized three times, solving the problems of low efficiency and energy waste in existing heating furnaces, improving heat utilization and furnace stability, and enhancing the practicality and cleanliness of the heating furnace.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-19
- Publication Date
- 2026-03-31
AI Technical Summary
Existing heating stoves suffer from low heating efficiency and serious energy waste, mainly due to insufficient heat utilization and recovery, excessively high flue gas emission temperature, incomplete fuel combustion, and unreasonable design leading to heat loss and pollutant generation.
A three-pass, three-stage vaporization and reheating heating furnace is designed. It uses heating and vaporization pipes in a water jacket and a Z-shaped flue to achieve three-stage heating and vaporization of water flow, increasing the residence time of flue gas in the flue. The Z-shaped flue and fuel baffle improve heat utilization and furnace stability.
It improves heating efficiency, reduces energy waste, enhances the stability and safety of the heater, and improves practicality, cleanliness, and service life.
Smart Images

Figure CN224065532U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of heating devices, specifically to a three-pass, three-stage vaporization and reheating heating furnace. Background Technology
[0002] While various types of heating stoves are available on the market, they generally suffer from low heating efficiency and significant energy waste. This is primarily because traditional stove designs often fail to adequately consider heat utilization and recovery. For example, some stoves emit excessively high flue gas temperatures, causing a large amount of heat to be released into the atmosphere, resulting in energy waste. Furthermore, traditional stoves may have structural flaws, such as suboptimal furnace and flue designs, leading to heat loss during transmission. Additionally, some stoves are inefficient in fuel use, resulting in incomplete combustion, poor heating performance, and the generation of significant pollutants.
[0003] Therefore, it is necessary to develop a three-pass, three-stage vaporization and reheating furnace to solve the above-mentioned problems in the existing technology. Utility Model Content
[0004] The technical problem to be solved by this utility model is to overcome the defects of the above-mentioned technology and provide a three-pass three-stage vaporization and reheating heating furnace.
[0005] To achieve the above objectives, this utility model provides a three-pass, three-stage vaporization and reheating heating stove, including a base, a stove body mounted on the base, a panel on the stove body, a furnace chamber inside the stove body, a flue connected to the furnace chamber, a flue outlet at the top of the flue, a water jacket surrounding the stove body, the flue being connected to the lower part of the furnace chamber in a Z-shape, a heating pipe and a vaporization pipe inside the flue, water flowing sequentially through the water jacket, heating pipe and vaporization pipe for heating, and then vaporizing before entering the heating pipe.
[0006] Furthermore, the Z-shaped flue includes a first section horizontally disposed at the bottom of the furnace chamber, the first section being connected to the bottom of the furnace chamber, a second section being disposed parallel to the first section at the top of the furnace body, and an inclined third section being connected between the first section and the second section, the third section containing a heating tube.
[0007] Furthermore, the heating tube is connected between the water jacket and the vaporization tube, the heating tube is arranged in a meandering array inside the third section, and the vaporization tube is located at the junction of the second section and the third section.
[0008] Furthermore, it also includes: a fuel inlet, which is located on the side of the furnace away from the flue; an air inlet, which is located above the fuel inlet; a slag outlet, wherein a grate is provided at the bottom of the furnace, the grate is rotatably connected to the furnace body via a rotating shaft, the lower part of the grate is provided with a slag-containing chamber, and the side of the slag-containing chamber away from the flue is provided with a slag outlet; and an air inlet pipe, which is located at the end of the furnace body away from the slag outlet.
[0009] Furthermore, a fuel baffle is rotatably connected between the furnace and the first section, the fuel baffle being used to prevent fuel from falling into the flue.
[0010] Furthermore, the top of the vaporization tube is provided with a heating hole for heating kitchen utensils, and the exhaust port is located at the end of the second section away from the heating hole.
[0011] Furthermore, the top of the heating hole is also provided with a stove cover, which is used to block the flame when no kitchen utensils are placed on the stove.
[0012] Furthermore, the lower part of the furnace body is also provided with an ash outlet, which is located at the connection between the first section and the third section.
[0013] Furthermore, the water jacket is arranged around the furnace and the flue, and an inlet pipe and an outlet pipe are arranged on the same side of the water jacket.
[0014] Advantages of this utility model: This utility model provides a three-pass, three-stage vaporization and reheating heating stove. By setting up a water jacket and heating and vaporization pipes in the Z-shaped flue, it realizes three-stage heating and vaporization of water flow, improving heating efficiency and making full use of energy. The Z-shaped flue design increases the residence time of flue gas in the flue, allowing the heat in the flue gas to be more fully transferred to the heating and vaporization pipes, further improving heating efficiency. The fuel baffle design prevents fuel from falling into the flue and affecting the heating effect, improving the stability and safety of the stove. The design of the heating holes and stove cover allows the stove to be used as a heating source for kitchen utensils when not in use for heating, improving the practicality of the stove. The ash outlet design makes it convenient for users to clean the ash and slag in the furnace, improving the cleanliness and service life of the stove. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of a three-pass, three-stage vaporization and reheating heating furnace according to this utility model;
[0016] Figure 2 This is a three-dimensional view of a three-pass, three-stage vaporization and reheating heating stove according to this utility model;
[0017] Figure 3 This is a left view of a three-pass, three-stage vaporization and reheating heating furnace according to this utility model.
[0018] As shown in the figure: 1. Base; 2. Furnace body; 3. Water jacket; 4. Panel; 5. Heating port; 6. Flue gas outlet; 7. Fuel filling port; 8. Slag outlet; 9. Slag discharge wrench; 10. Air inlet pipe; 11. Water outlet pipe; 12. Water inlet pipe; 13. Ash outlet; 14. Air inlet; 1501. First section; 1502. Second section; 1503. Third section; 16. Heating tube; 17. Furnace chamber; 18. Vaporization tube; 19. Fuel baffle plate. Detailed Implementation
[0019] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0021] In the description of the embodiments of this utility model, if a feature is referred to as "setting", "fixing", "connecting", or "installing" on another feature, it can be set, fixed, or connected directly to the other feature, or it can be set, fixed, connected, or installed indirectly on the other feature.
[0022] In the description of the embodiments of this utility model, the term "several" means one or more, and the term "multiple" means two or more. The terms "greater than," "less than," and "exceeding" should be understood as excluding the stated number, while the terms "above," "below," and "within" should be understood as including the stated number. The terms "first" and "second" should be understood as distinguishing technical features and not as indicating or implying relative importance, the number of indicated technical features, or the order of the indicated technical features.
[0023] The present invention will now be described in further detail with reference to the accompanying drawings.
[0024] Combined with appendix Figure 1 and attached Figure 2 As shown, this embodiment provides a three-pass, three-stage vaporization and reheating heating stove, including a base 1, a stove body 2 mounted on the base 1, a panel 4 on the stove body 2, a furnace chamber 17 inside the stove body 2, a flue connected to the furnace chamber 17, a flue outlet 6 at the top of the flue, a water jacket 3 surrounding the stove body 2, the flue being connected in a Z-shape to the lower part of the furnace chamber 17, a heating pipe 16 and a vaporization pipe 18 inside the flue, water flowing sequentially through the water jacket 3, the heating pipe 16 and the vaporization pipe 18 being heated, and then vaporized and entering the heating pipe.
[0025] Specifically, the furnace body 2 is the main structure of the heating stove. A base 1 is installed at the bottom of the furnace body 2, and a panel 4 is installed at the top. For higher heat utilization, a water jacket 3 surrounds the furnace body 2. A furnace chamber 17 is located inside the furnace body 2 at the front. The furnace chamber 17 has a fuel inlet 7 through which fuel enters. To prevent fuel from falling, a grate is provided at the bottom of the furnace chamber 17. For easy slag removal, a slag outlet 8 is also provided inside the furnace chamber 17, from which the combustion waste is discharged. A flue gas duct is connected to the rear of the furnace chamber 17. To increase heat utilization efficiency, the flue gas duct is designed in a Z-shape, including a first section 1501 and a second section 1502 arranged in parallel, and a third section 1503 arranged at an angle. Fuel burns in the furnace chamber 17. Afterwards, heat enters through the first section 1501, rises along the third section 1503, reaches the top of the furnace body 2, and then enters the exhaust port 6 along the second section 1502, and is discharged from the furnace body 2. The water jacket 3 is fitted around the outside of the furnace body 2. Specifically, the water jacket 3 is arranged around the furnace chamber 17 and the flue. A vaporization pipe 18 is also provided between the third section 1503 and the first section 1501. The water flow first enters the water jacket 3, then enters the heating pipe 16, and then enters the vaporization pipe 18 along the heating pipe 16. The specific principle is that the water flow first undergoes a first round of heating through the water jacket 3, and then undergoes a second round of heating after entering the heating pipe 16. Since the vaporization pipe 18 is set between the third section 1503 and the first section 1501, the water flow is heated in the third round after entering the vaporization pipe 18, which greatly improves the energy utilization rate. This embodiment achieves three-stage heating and vaporization of water flow by setting up a water jacket 3 and heating pipes 16 and vaporization pipes 18 in the Z-shaped flue, which improves heating efficiency and makes full use of energy. The Z-shaped flue design increases the residence time of flue gas in the flue, allowing the heat in the flue gas to be more fully transferred to the heating pipes 16 and vaporization pipes 18, further improving heating efficiency. The fuel baffle 19 design prevents fuel from falling into the flue and affecting the heating effect, improving the stability and safety of the heater. The design of the heating hole 5 and the furnace cover allows the heater to be used as a heating source for kitchen utensils when not in use for heating, improving the practicality of the heater. The ash outlet 13 design makes it convenient for users to clean the ash and slag in the furnace chamber 17, improving the cleanliness and service life of the heater.
[0026] Combined with appendix Figure 1 As shown, the Z-shaped flue includes a first section 1501 horizontally disposed at the bottom of the furnace chamber 17, the first section 1501 being connected to the bottom of the furnace chamber 17, a second section 1502 being disposed parallel to the first section 1501 at the top of the furnace body 2, and an inclined third section 1503 being connected between the first section 1501 and the second section 1502, the third section 1503 containing a heating tube 16.
[0027] Combined with appendix Figure 1As shown, the heating tube 16 is connected between the water jacket 3 and the vaporization tube 18. The heating tube 16 is arranged in a meandering array inside the third section 1503. The vaporization tube 18 is located at the junction of the second section 1502 and the third section 1503.
[0028] Combined with appendix Figure 1 To be continued Figure 3 As shown, it also includes: a fuel inlet 7, which is located on the side of the furnace 17 away from the flue; an air inlet 14, which is located above the fuel inlet 7; a slag outlet 8, wherein the bottom of the furnace 17 is provided with a grate, which is rotatably connected to the furnace body 2 via a rotating shaft, and the lower part of the grate is provided with a slag-containing cavity, and the side of the slag-containing cavity away from the flue is provided with a slag outlet 8; and an air inlet pipe 10, which is located at the end of the furnace body 2 away from the slag outlet 8.
[0029] Combined with appendix Figure 1 As shown, a fuel baffle 19 is rotatably connected between the furnace 17 and the first section 1501. The fuel baffle 19 is used to prevent fuel from falling into the flue.
[0030] Combined with appendix Figure 1 As shown, the top of the vaporization pipe 18 is provided with a heating hole 5 for heating kitchen utensils, and the exhaust port 6 is located at the end of the second section 1502 away from the heating hole 5.
[0031] Furthermore, the top of the heating hole 5 is also provided with a stove cover, which is used to block the flame when no kitchen utensils are placed on the stove.
[0032] Combined with appendix Figure 1 As shown, the lower part of the furnace body 2 is also provided with an ash outlet 13, which is located at the connection between the first section 1501 and the third section 1503.
[0033] Combined with appendix Figure 1 To be continued Figure 3 As shown, the water jacket 3 surrounds the furnace 17 and the flue, and an inlet pipe 12 and an outlet pipe 11 are arranged on the same side of the water jacket 3. The present invention and its embodiments have been described above. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited to this. In conclusion, if those skilled in the art, inspired by this description, design similar structures and embodiments without departing from the spirit of the present invention, such designs should fall within the protection scope of the present invention.
Claims
1. A three-pass, three-stage vaporization and reheating heating stove, comprising a base, a stove body mounted on the base, a panel on the stove body, a furnace chamber inside the stove body, a flue connected to the furnace chamber, and a flue outlet at the top of the flue, characterized in that: The water jacket box is arranged around the furnace body, the flue is connected to the lower part of the hearth in a Z shape, the heating pipe and the vaporization pipe are arranged in the flue, water flows through the water jacket box, the heating pipe and the vaporization pipe in sequence and is heated, and after vaporization, the water enters the heating pipeline.
2. A three-pass triple-vaporizing return-to-burn heating stove according to claim 1, characterized in that: The Z-shaped flue comprises a first section arranged horizontally at the bottom of the hearth, the first section is arranged in communication with the bottom of the hearth, a second section is arranged in parallel with the first section at the top of the furnace body, and an inclined third section is arranged in connection between the first section and the second section, and the heating pipe is arranged in the third section.
3. A three-pass triple-vaporizing return-to-burn heating stove according to claim 2, characterized in that: The heating pipe is connected between the water jacket box and the vaporization pipe, the heating pipe is arranged in a meandering array inside the third section, and the vaporization pipe is arranged at the junction of the second section and the third section.
4. A three-pass triple-vaporizing return-to-burn heating stove according to claim 3, characterized in that, Further comprising: A fuel adding port is arranged on the side of the hearth away from the flue, an air inlet is arranged on the upper part of the fuel adding port, a slag outlet is arranged at the bottom of the hearth, a grate is arranged at the bottom of the hearth, the grate is rotatably connected to the furnace body through a rotating shaft, a slag containing cavity is arranged at the lower part of the grate, and a slag outlet is arranged on the side of the slag containing cavity away from the flue, and an air inlet pipe is arranged at the end of the furnace body away from the slag outlet.
5. A three-pass triple-vaporizing return-to-pilot heating stove according to claim 4, characterized in that: A fuel blocking plate is rotatably arranged between the hearth and the first section, and the fuel blocking plate is used to prevent fuel from falling into the flue.
6. A three-pass triple-vaporizing return-to-pilot heating stove according to claim 5, characterized in that: A heating hole for heating kitchen utensils is arranged at the top of the vaporization pipe, and an exhaust port is arranged at the end of the second section away from the heating hole.
7. A three-pass triple-vaporizing return-to-pilot heating stove according to claim 6, characterized in that: A furnace cover is further arranged at the top of the heating hole, and the furnace cover is used to block the flame when no kitchen utensils are placed on the heating stove.
8. A three-pass triple-vaporizing return-to-purge heating stove according to claim 2, characterized in that: An ash outlet is further arranged at the lower part of the furnace body, and the ash outlet is arranged at the junction of the first section and the third section.
9. A three-pass triple-vaporizing return-to-purge heating stove according to claim 1, characterized in that: The water jacket box is arranged around the hearth and the flue, and the water jacket box is arranged on the same side of the hearth and the flue and is provided with a water inlet pipe and a water outlet pipe.