A noise reduction device for a fully premixed gas wall-mounted boiler
By improving the air and gas intake pipelines of fully premixed gas wall-mounted furnaces, and using components such as fans, slewing spiral pipes and venturi pipes, the problem of unstable gas and air mixing ratios is solved, the stability of the combustion process and the reduction of the sound of the explosion are achieved, and the stability of the equipment and user experience are improved.
Patent Information
- Application Number
- CN202421431660.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-21
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-06-21
AI Technical Summary
In low temperature and strong windy weather, the mixing ratio of gas and air is unstable, resulting in insufficient combustion or excessive combustion, resulting in burst sound, affecting the user experience.
The fan, slewing spiral pipe and venturi pipe are used to improve the air and gas intake pipeline, suck the mixed gas through the negative pressure of the fan, and preliminary mixing and uniform speed reduction are carried out in the spiral pipe and venturi pipe to ensure that the mixing ratio of gas and air is accurate and uniform.
By optimizing the mixing process of air and gas, the uniformity and stability of the mixing are improved, the generation of pops is reduced or eliminated, and the operation stability and user experience of the equipment are improved.
Smart Images
Figure CN222703303U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an improvement of an auxiliary mechanism of a wall-mounted gas stove, in particular to a noise reduction device for a full premixed wall-mounted gas stove. Background Art
[0002] The "full premixing" in the fully premixed gas wall-mounted boiler means that before combustion, the gas and air are fully mixed in the burner in a certain proportion, and then ignited and burned. Compared with the traditional partially premixed or non-premixed combustion methods, this combustion method has significant advantages and high combustion efficiency: the fully premixed burner can fully mix the gas and air to ensure more complete combustion, reduce unburned gas emissions, and thus improve combustion efficiency. Energy saving and environmental protection: Due to more complete combustion, the calorific value of the gas can be used more efficiently, reducing energy waste. At the same time, complete combustion also reduces the emission of harmful gases such as carbon monoxide and nitrogen oxides, which is more environmentally friendly. Stable combustion: The full premixing technology can maintain a stable flame, is not easy to extinguish, has a uniform flame temperature, and helps to improve the reliability and service life of the equipment.
[0003] The traditional fully premixed air intake pipe is a smooth straight pipe, and the lack of any interference and turbulence before premixing will lead to unstable air ratio during and after premixing. Especially in low temperature and windy weather, the gas and air mixture ratio will change. If the gas and air mixture ratio is not appropriate, it may lead to incomplete combustion or excessive combustion, causing explosion sound. In actual use, the wall-mounted boiler emits various noises, which will bring users a very good sense of insecurity and seriously affect the user experience. Utility Model Content
[0004] The purpose of the utility model is to provide a noise reduction device for a fully premixed gas wall-mounted boiler in response to the defects and shortcomings of the prior art. It can effectively improve the mixing effect of air and gas by improving the air intake pipelines of air and gas, solve the problem of popping sound in the fully premixed gas wall-mounted boiler, and enhance the operating stability of the equipment and user experience.
[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: it comprises a fan 1, an air inlet pipe 2, a rotary spiral tube 3, a venturi tube 4, and a gas inlet copper tube 5. The fan 1 is connected to the rotary spiral tube 3 through the air inlet pipe 2, and the inlet of the rotary spiral tube 3 is the air inlet end 31; the side of the air inlet pipe 2 is connected to the air outlet end 41 of the venturi tube 4, and the air inlet end 43 of the venturi tube 4 is connected to the gas inlet copper tube 5 through a locking nut 44.
[0006] A flange connection plate 11 is provided on one side of the fan 1 , and the air inlet pipe 2 is connected to the air inlet 12 of the fan 1 through the flange connection plate 11 .
[0007] The air outlet end 41 of the venturi tube 4 is connected to the side wall of the air inlet pipe 2 through a venturi tube flange 42 .
[0008] The air outlet 13 of the fan 1 is connected to the combustion chamber 7 via the mixing air supply pipe 6 .
[0009] The working principle of the utility model is as follows: the gas and air enter the mixing air supply pipe 6 and the combustion chamber 7 respectively through independent pipelines; the gas enters the low-pressure area of the venturi tube through an external regulating valve, and then passes through the venturi tube 4 and is preliminarily mixed with the air in the air inlet pipe 2; the air enters the spiral tube and is evenly decelerated in the spiral tube to ensure that the air enters the air inlet pipe 2 at a uniform speed, and the air entering at a uniform speed is evenly mixed with the gas coming out of the venturi tube 4; the mixed gas enters the fan 1, and the mixed gas is sucked in by the negative pressure of the fan 1, and the fully mixed gas and air mixture enters the combustion chamber 7 through the mixing air supply pipe 6 and is burned under the action of the ignition device.
[0010] Since the mixing ratio of gas and air is accurate and uniform, the combustion process is smooth, without local overheating or overcooling, thus reducing or eliminating popping sound. At the same time, the system can be equipped with sensors and controllers to monitor the flow, pressure and mixing ratio of gas and air in real time; the controller automatically adjusts the fan and gas valve according to the monitoring data to maintain the stability of the mixing ratio and ensure the continuous and smooth combustion process.
[0011] After adopting the above technical solution, the utility model has the following beneficial effects: by improving the air and gas intake pipelines, it can effectively improve the mixing effect of air and gas, solve the popping sound problem in the fully premixed gas wall-mounted boiler, and improve the operating stability of the equipment and user experience. It uses a spiral tube and a venturi tube plus a fan to effectively solve the popping sound problem in the fully premixed gas wall-mounted boiler. This method optimizes the mixing process of air and gas, improves the uniformity and stability of the mixing, and thus reduces or eliminates the generation of popping sound. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0013] Figure 1 It is a structural schematic diagram of the utility model;
[0014] Figure 2 yes Figure 1 Left view of .
[0015] Explanation of the accompanying drawings: Explanation of the accompanying drawings: Fan 1, air inlet pipe 2, rotary spiral tube 3, Venturi tube 4, gas inlet copper tube 5, air inlet end 31, air outlet end 41, air inlet end 43, locking nut 44, flange connecting plate 11, air inlet 12, Venturi tube flange 42, air outlet 13, mixing air supply pipe 6, combustion chamber 7. DETAILED DESCRIPTION
[0016] See also Figure 1-2 As shown, the technical solution adopted in this specific embodiment is: it includes a fan 1, an air inlet pipe 2, a rotary spiral pipe 3, a venturi tube 4, and a gas inlet copper pipe 5. The fan 1 is connected to the rotary spiral pipe 3 through the air inlet pipe 2, and the inlet of the rotary spiral pipe 3 is the air inlet end 31; the side of the air inlet pipe 2 is connected to the outlet end 41 of the venturi tube 4, and the inlet end 43 of the venturi tube 4 is connected to the gas inlet copper pipe 5 through a locking nut 44; a flange connection plate 11 is provided on one side of the fan 1, and the air inlet pipe 2 is connected to the air inlet 12 of the fan 1 through the flange connection plate 11. The outlet end 41 of the venturi tube 4 is connected to the side wall of the air inlet pipe 2 through the venturi tube flange 42. The air outlet 13 of the fan 1 is connected to the combustion chamber 7 through the mixing air supply pipe 6.
[0017] The gas and air enter the mixing air supply pipe 6 and the combustion chamber 7 through independent pipelines respectively; the gas enters the low-pressure area of the venturi tube through an external regulating valve, and then passes through the venturi tube 4 and is preliminarily mixed with the air in the air inlet pipe 2; the air enters the spiral tube and is evenly decelerated in the spiral tube to ensure that the air enters the air inlet pipe 2 at a uniform speed, and the air entering at a uniform speed is evenly mixed with the gas coming out of the venturi tube 4; the mixed gas enters the fan 1, and the mixed gas is sucked in by the negative pressure of the fan 1, and the fully mixed gas and air mixture enters the combustion chamber 7 through the mixing air supply pipe 6 and is burned under the action of the ignition device.
[0018] Since the mixing ratio of gas and air is accurate and uniform, the combustion process is smooth, without local overheating or overcooling, thus reducing or eliminating popping sound. At the same time, the system can be equipped with sensors and controllers to monitor the flow, pressure and mixing ratio of gas and air in real time; the controller automatically adjusts the fan and gas valve according to the monitoring data to maintain the stability of the mixing ratio and ensure the continuous and smooth combustion process.
[0019] This specific implementation method can effectively improve the mixing effect of air and gas by improving the air and gas intake pipelines, solve the popping sound problem in the full premixed gas wall-mounted boiler, and improve the operating stability of the equipment and user experience. It uses a spiral tube and a venturi tube plus a fan to effectively solve the popping sound problem in the full premixed gas wall-mounted boiler. This method optimizes the mixing process of air and gas, improves the uniformity and stability of the mixing, and thus reduces or eliminates the generation of popping sound.
[0020] The above description is only used to illustrate the technical solution of the utility model rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the utility model by ordinary technicians in this field should be included in the scope of the claims of the utility model as long as they do not depart from the spirit and scope of the technical solution of the utility model.
Claims
1. A noise reduction device for a fully premixed gas wall-mounted boiler, characterized in that: It comprises a fan (1), an air inlet pipe (2), a rotary spiral pipe (3), a venturi tube (4), and a gas inlet copper pipe (5). The fan (1) is connected to the rotary spiral pipe (3) through the air inlet pipe (2), and the inlet of the rotary spiral pipe (3) is an air inlet end (31); the side of the air inlet pipe (2) is connected to the air outlet end (41) of the venturi tube (4), and the air inlet end (43) of the venturi tube (4) is connected to the gas inlet copper pipe (5) through a locking nut (44).
2. A noise reduction device for a full premixed gas wall-mounted boiler according to claim 1, characterized in that: A flange connection plate (11) is provided on one side of the fan (1), and the air inlet pipe (2) is connected to the air inlet (12) of the fan (1) via the flange connection plate (11).
3. A noise reduction device for a full premixed gas wall-mounted boiler according to claim 1, characterized in that: The air outlet end (41) of the venturi tube (4) is connected to the side wall of the air inlet pipe (2) via a venturi tube flange (42).
4. The noise reduction device for a full premixed gas wall-mounted boiler according to claim 1 is characterized in that: The air outlet (13) of the fan (1) is connected to the combustion chamber (7) via a mixing air supply pipe (6).