Energy-saving device for improving energy conservation and stability of gas-fired boiler
By installing an outer ring wall and a flue gas box on the outside of the gas-fired boiler, the high-temperature flue gas is used to preheat cold water, and dust is removed by scrapers. This solves the problem of low heat energy utilization rate of exhaust gas in gas-fired boilers and achieves efficient heat energy recycling and insulation effect.
Patent Information
- Application Number
- CN202423184429.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-24
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-12-24
AI Technical Summary
Existing gas boilers have low exhaust gas heat energy utilization rate, and dust in the exhaust gas reduces heat transfer efficiency.
It adopts a structure of ring wall, flue box, heat pipe and rotating frame, uses high temperature flue gas to preheat cold water, and removes dust by scraper to improve the thermal energy utilization rate.
It improves the recycling rate of waste gas heat energy, enhances the insulation effect of gas boilers, accelerates the heating speed of cold water, and improves heat transfer efficiency.
Smart Images
Figure CN223622941U_ABST
Abstract
Description
Technical Field
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[0001] The utility model relates to the technical field of gas boilers, and particularly relates to an energy-saving device for improving the energy saving and stability of gas boilers. Background Art
[0002] Gas boilers include gas water boilers, gas hot water boilers, gas steam boilers, etc. Among them, gas hot water boilers are also called gas heating boilers and gas bathing boilers. As the name implies, gas boilers refer to boilers fueled by gas. Gas boilers are the most economical compared with oil-fired boilers and electric boilers. Therefore, most people choose gas boilers as boiler equipment for steam, heating, and bathing.
[0003] However, there are some defects in existing gas boilers. For example:
[0004] The waste gas generated after gas combustion is directly discharged from the boiler, resulting in waste of the thermal energy in the waste gas. And since there is dust in this part of the waste gas, if the waste gas is recycled using a pipeline, the dust in the waste gas will adhere to the pipeline wall, reducing the heat conduction efficiency and still resulting in low utilization rate of the thermal energy in the waste gas. Content of the Utility Model
[0005] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides an energy-saving device for improving the energy saving and stability of gas boilers to solve the problem of low utilization rate of the thermal energy of the waste gas in the gas boiler mentioned above. <00000Through the above technical solution, the annular wall and the smoke box can be fitted outside the gas-fired boiler. When the high-heat flue gas passes through the annular wall and the smoke box, the temperature of the annular wall and the smoke box can be higher than the normal temperature, thereby reducing the temperature difference between the gas-fired boiler and the external environment and keeping the gas-fired boiler warm.
[0013] Before entering the gas boiler, cold water can first flow into the heat pipe, and use the high-heat flue gas in the flue gas box to preheat the cold water, thereby accelerating the heating speed of the water flow and recycling the heat energy of the high-heat flue gas.
[0014] Furthermore, when dust accumulates on the outer wall of the heat pipe, the rotating frame can be rotated to allow the scraper to remove the dust, preventing the dust from reducing the heat conduction performance of the heat pipe, ensuring the efficiency of heat transfer from high-temperature flue gas to cold water, and improving the utilization rate of waste gas heat energy.
[0015] Preferably, a lifting plate moves vertically through the upper side of the smoke box, the lifting plate has a notch at its center and the rotating frame is located in the notch, and the vertical end of the heat-conducting pipe moves vertically through the lifting plate.
[0016] The above technical solution allows workers to control the rotation of the rotating frame from outside the smoke box, and prevents the lifting plate from obstructing the rotation of the rotating frame when pushing the lifting plate upward.
[0017] Preferably, an inner support plate is fixedly connected inside the smoke box, and a spring is fixed between the upper side of the inner support plate and the lower side of the lifting plate. A first rotating buckle is rotatably connected to the upper side of the smoke box, and the lower side of the first rotating buckle abuts against the upper side of the lifting plate.
[0018] With the above technical solution, when there is no first buckle restriction, the spring can actively push the lifting plate upward without the need for manual pulling of the lifting plate upward, which is convenient to use. When it is necessary to move the lifting plate downward, the first buckle can restrict the lifting plate from moving upward at will, thereby controlling the lifting of the lifting plate.
[0019] Preferably, a sealing gasket is fixed to the side of the notch of the lifting plate, and the sealing gasket contacts the side of the rotating frame;
[0020] The above technical solution increases the sealing between the rotating frame and the lifting plate notch, preventing flue gas from flowing out of the notch.
[0021] Preferably, an opening is provided between the ring wall and the lower side of the smoke box, and a bottom door moves vertically through the opening. A second rotating buckle is provided between the ring wall and the lower side of the smoke box, and the second rotating buckle supports the bottom door upward.
[0022] Through the above technical solution, the second buckle can restrict the bottom door within the opening of the ring wall and the smoke box, sealing the ring wall and the smoke box. After rotating the second buckle, the bottom door can be removed downwards, allowing the inner walls of the ring wall and the smoke box to be cleaned through the opening.
[0023] The beneficial effects of this utility model are as follows:
[0024] This device allows the annular wall and flue gas box to be fitted over the gas-fired boiler. When the high-heat flue gas passes through the annular wall and flue gas box, the temperature of the annular wall and flue gas box will be higher than the ambient temperature, reducing the temperature difference between the gas-fired boiler and the external environment and thus insulating the gas-fired boiler. Before entering the gas-fired boiler, cold water can first flow into the heat pipe, and the high-heat flue gas in the flue gas box will preheat the cold water, accelerating the heating speed of the water flow. This allows for the recycling of the heat energy of the high-heat flue gas. Furthermore, when dust accumulates on the outer wall of the heat pipe, the rotating frame can be rotated to allow the scraper to remove the dust, preventing the dust from reducing the thermal conductivity of the heat pipe and ensuring the efficiency of heat transfer from the high-temperature flue gas to the cold water, thereby improving the utilization rate of waste gas heat energy.
[0025] In summary, this device can recycle the thermal energy in high-temperature flue gas to insulate the gas-fired boiler, preheat cold water to improve the efficiency of cold water heating, and ensure the heat transfer efficiency between cold water and high-temperature flue gas, thus greatly improving the thermal energy recycling rate of high-temperature flue gas. Attached Figure Description
[0026] Figure 1 This is a perspective view of the present invention.
[0027] Figure 2 This is the front view of the present invention.
[0028] Figure 3 for Figure 2 A schematic diagram of the cross-sectional structure at point AA.
[0029] Figure 4 for Figure 2 Schematic diagram of the cross-sectional structure at point BB.
[0030] In the diagram: 1. Ring wall; 2. Exhaust pipe; 3. Intake pipe; 4. Smoke box; 5. Heat conduction pipe; 6. External connection end; 7. First buckle; 8. Sealing gasket; 9. Rotating frame; 10. Lifting plate; 11. Second buckle; 12. Bottom door; 13. Scraper; 14. Spring; 15. Inner support plate. Detailed Implementation
[0031] The following will refer to the attached reference. Figures 1 to 4 The embodiments of this utility model will be described in detail. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of this utility model and are not intended to limit the scope of protection of this utility model.
[0032] As attached Figure 1 -Appendix Figure 4 As shown, an energy-saving device for improving the energy efficiency and stability of a gas-fired boiler includes an annular wall 1, a flue gas box 4, a heat-conducting pipe 5, and a rotating frame 9.
[0033] Ring wall 1: The ring wall 1 is in a U-shaped form and hollow inside. An exhaust pipe 2 passes through the upper side of the front half of the ring wall 1 to discharge flue gas.
[0034] Smoke passing box 4: The rear end of the smoke passing box 4 is fixed to the rear end of the ring wall 1, and the rear end of the smoke passing box 4 is connected to the rear end of the ring wall 1, so that the inside of the smoke passing box 4 is connected to the inside of the ring wall 1. An intake pipe 3 passes through the front side of the smoke passing box 4. After the high-temperature flue gas enters the smoke passing box 4 from the intake pipe 3, it flows from the front end of the smoke passing box 4 to the rear end of the smoke passing box 4, and then flows into the ring wall 1. In order to facilitate cleaning the inner walls of the ring wall 1 and the smoke passing box 4, an opening is provided between the lower sides of the ring wall 1 and the smoke passing box 4, and dust falls downward from the opening. In order to prevent the flue gas from leaking from the opening when the flue gas passes through the smoke passing box 4, a bottom door 12 passes through the opening up and down, and the bottom door 12 seals the opening. A second rotating buckle 11 rotates on the lower sides of the ring wall 1 and the smoke passing box 4, and the second rotating buckle 11 supports the bottom door 12 upward to prevent the bottom door 12 from falling off.
[0035] Heat conduction pipe 5: The heat conduction pipe 5 is fixed inside the smoke passing box 4. The heat conduction pipe 5 is in a U-shaped form, that is, the lower half of the heat conduction pipe 5 is semicircular, and the two ends of the lower half of the heat conduction pipe 5 extend vertically upward to form vertical ends. After the two vertical ends of the heat conduction pipe 5 pass through the upper part of the smoke passing box 4, an external connection end 6 is fixed. The number of the heat conduction pipes 5 is three and they are sleeved inside and outside. The centers of the lower halves of the three heat conduction pipes 5 are on the same straight line, and there is a gap between the inner and outer heat conduction pipes 5 to ensure that the flue gas makes surface contact with more heat conduction pipes 5 and ensure the heat conduction efficiency.
[0036] Rotating frame 9: The rotating frame 9 rotates inside the smoke passing box 4. The rotation center of the rotating frame 9 is on the same straight line as the center of the lower half of the heat conduction pipe 5. A scraping plate 13 is integrally formed on the side surface of the rotating frame 9, and the lower half of the scraping plate 13 is movably sleeved outside the lower half of the heat conduction pipe 5.
[0037] In this embodiment, a lifting plate 10 passes through the upper side of the smoke passing box 4 up and down. A notch is provided in the center of the lifting plate 10 and the rotating frame 9 is located in the notch. The vertical ends of the heat conduction pipe 5 pass through the lifting plate 10 up and down. An inner support plate 15 is fixedly connected inside the smoke passing box 4. A spring 14 is fixed between the upper side of the inner support plate 15 and the lower side of the lifting plate 10. A first rotating buckle 7 is rotatably connected to the upper side of the smoke passing box 4, and the lower side of the first rotating buckle 7 abuts against the upper side of the lifting plate 10. A sealing gasket 8 is fixed on the side surface of the notch of the lifting plate 10, and the sealing gasket 8 contacts the side surface of the rotating frame 9.
[0038] The working principle of this device is as follows:
[0039] The ring wall 1 and the smoke box 4 are fixedly fitted around the gas boiler. The water inlet of the gas boiler is connected to one of the external terminals 6 by a pipe. The water outlet of the water supply equipment is connected to the other external terminal 6 by a pipe. The water flows into the gas boiler after passing through the water supply equipment, the external terminal 6, the heat pipe 5 and the other external terminal 6 in sequence.
[0040] The flue gas outlet of the gas boiler is connected to the inlet pipe 3 by a pipe. The high-temperature flue gas passes through the inlet pipe 3, the flue box 4, the ring wall 1 and the outlet pipe 2 in sequence and is then discharged. The high-temperature flue gas heats the heat-conducting pipe 5 in the flue box 4, and then heats the cold water.
[0041] When it is necessary to clean the outer wall of the heat pipe 5, the inner wall of the ring wall 1, and the inner wall of the smoke box 4, rotate the first buckle 7 and the second buckle 11. The spring 14 pushes the lifting plate 10 upward, allowing the rotating frame 9 to rotate freely. Then rotate the rotating frame 9, which drives the scraper 13 to rotate. The scraper 13 scrapes off the dust on the outer wall of the heat pipe 5, and the lower opening of the ring wall 1 and the smoke box 4 opens, allowing the inner walls of the ring wall 1 and the smoke box 4 to be cleaned. After cleaning, press the lifting plate 10 down and turn the first buckle 7 back, insert the bottom door 12 back into the lower opening of the ring wall 1 and the smoke box 4, and turn the second buckle 11 back.
[0042] It should be noted that in the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0043] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0044] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.
Claims
1. An energy-saving device for improving the energy efficiency and stability of a gas-fired boiler, characterized in that, It includes an annular wall (1), a smoke passing box (4), heat conduction tubes (5) and a rotating frame (9); Annular wall (1): The annular wall (1) is in a U shape and hollow inside; Smoke passing box (4): The smoke passing box (4) is fixed at the port of the annular wall (1), and the inside of the smoke passing box (4) is connected to the inside of the annular wall (1); Heat conduction tubes (5): The heat conduction tubes (5) are fixed inside the smoke passing box (4). The lower half of the heat conduction tubes (5) is semicircular. The two ends of the lower half of the heat conduction tubes (5) extend vertically upward to form vertical ends. After the two vertical ends of the heat conduction tubes (5) pass through the smoke passing box (4) upward, external connection ends (6) are fixed; Rotating frame (9): The rotating frame (9) rotates inside the smoke passing box (4). The rotation center of the rotating frame (9) is on the same straight line as the center of the lower half of the heat conduction tubes (5). A scraping plate (13) is integrally formed on the side of the rotating frame (9). The lower half of the scraping plate (13) is movably sleeved outside the lower half of the heat conduction tubes (5).
2. The energy-saving device for improving the energy efficiency and stability of a gas-fired boiler according to claim 1, characterized in that, A lifting plate (10) passes through the upper side of the smoke passing box (4) up and down. A notch is provided at the center of the lifting plate (10), and the rotating frame (9) is located in the notch. The vertical ends of the heat conduction tubes (5) pass through the lifting plate (10) up and down.
3. The energy-saving device for improving the energy efficiency and stability of a gas-fired boiler according to claim 2, characterized in that, An inner support plate (15) is fixedly connected inside the smoke passing box (4). A spring (14) is fixed between the upper side of the inner support plate (15) and the lower side of the lifting plate (10). A first rotating buckle (7) is rotatably connected to the upper side of the smoke passing box (4), and the lower side of the first rotating buckle (7) abuts against the upper side of the lifting plate (10).
4. An energy-saving device for improving the energy saving and stability of a gas boiler according to claim 2, Its features are, A sealing gasket (8) is fixed on the side of the notch of the lifting plate (10), and the sealing gasket (8) contacts the side of the rotating frame (9).
5. An energy-saving device for improving the energy efficiency and stability of a gas-fired boiler according to claim 1, characterized in that, An opening is provided between the lower sides of the annular wall (1) and the smoke passing box (4), and a bottom door (12) passes through the opening up and down. A second rotating buckle (11) rotates on the lower sides of the annular wall (1) and the smoke passing box (4), and the second rotating buckle (11) supports the bottom door (12) upward.