Fuel flow guide air chamber for combustion device and formed mixing chamber
By designing staggered air ducts and mixing chambers in the combustion device, the problem of insufficient fuel-air mixing is solved, achieving full combustion and efficient utilization of fuel.
Patent Information
- Application Number
- CN202520460977.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-17
- Publication Date
- 2026-03-17
- Estimated Expiration
- 2035-03-17
AI Technical Summary
In existing combustion devices, fuel and air are not mixed sufficiently, resulting in incomplete combustion and low fuel utilization.
Design a fuel guide air chamber with air grooves distributed around the circumference of the cylinder. The co-current and counter-current air grooves are arranged alternately to form clockwise and counter-clockwise airflow. Combined with the mixing chamber, the fuel and air are fully mixed.
It improves fuel combustion efficiency, ensures complete combustion of fuel, reduces carbon monoxide emissions, and enhances fuel utilization.
Smart Images
Figure CN224003702U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of combustion assistance technology, and in particular to a fuel guide air chamber and a mixing chamber for a combustion device. Background Technology
[0002] A combustion device is a heat source that generates heat by burning fuel. Fuels generally include liquid fuels and gaseous fuels (this invention mainly focuses on liquid and gaseous fuels). For fuel to burn completely, it needs to be thoroughly mixed with air (oxygen in the air). However, existing combustion devices do not effectively mix fuel and air thoroughly. They generally ignite directly at the fuel outlet (for example, in a typical gas stove, combustion usually occurs at the gas outlet). This results in some gas not being fully mixed with air before combustion, leading to incomplete combustion and higher carbon monoxide emissions. This also results in low fuel utilization. Utility Model Content
[0003] The purpose of this utility model is to solve the technical problems pointed out in the background art, and to provide a fuel guide air chamber and a mixing chamber for a combustion device. The cylinder wall has air grooves distributed in a circular pattern, and three air groove layout schemes are provided. These schemes guide the air inside the cylinder into the required airflow and mix it fully with the fuel so that the fuel can be fully burned. This is beneficial to improving the fuel combustion efficiency and can be used as a core component of a high-power stove.
[0004] The objective of this utility model is achieved through the following technical solution:
[0005] A fuel guide chamber for a combustion device includes a guide cylinder cavity, which consists of a cylinder and a top plate located at the top of the cylinder and sealed to the top of the cylinder. The bottom of the cylinder of the guide cylinder cavity has an air inlet. The inner cavity of the cylinder is a guide air chamber. The cylinder wall of the cylinder has a plurality of air slots distributed circumferentially. Among all the air slots, all air slots are downwind slots, or all air slots are upwind slots, or some air slots are downwind slots and the remaining air slots are upwind slots.
[0006] To better realize this utility model, in all the air ducts, half of the air ducts are windward ducts and the other half are windward ducts. All the windward ducts form a windward duct unit and are arranged on one half of the cylinder wall. All the windward ducts form a windward duct unit and are arranged on the other half of the cylinder wall.
[0007] Preferably, the air duct includes a long air duct and a short air duct.
[0008] Preferably, the following air duct is arranged to discharge air at a clockwise angle from the inner wall to the outer wall of the cylinder, and the counter-wind duct is arranged to discharge air at a counter-clockwise angle from the inner wall to the outer wall of the cylinder.
[0009] Preferably, the air inlet at the bottom of the cylinder is sealed with a sealing base plate A, and the sealing base plate A has an air inlet that communicates with the air guide cavity.
[0010] Preferably, the top plate and the top end of the cylinder have guide arc surfaces.
[0011] A mixing chamber consisting of a fuel guide air chamber, wherein a mixing cylinder is fitted outside the fuel guide air chamber, and a mixing cavity is formed between the inner wall and the outer wall of the mixing cylinder, and a fuel inlet communicating with the mixing cavity is opened in the cylinder wall of the mixing cylinder.
[0012] Preferably, the fuel guide air chamber has half of a counter-wind trough on the left side of the fuel inlet and half of a co-wind trough on the right side of the fuel inlet.
[0013] Preferably, a sealing base plate B is sealed between the bottom ends of the mixing cylinder and the top end of the mixing cylinder, the top of the mixing cylinder is higher than the top plate, and the part of the mixing cylinder cavity above the top plate is the mixing outlet.
[0014] Preferably, the fuel inlet is sealed with a fuel delivery pipe, and a delivery pump is installed on the fuel delivery pipe.
[0015] Compared with the prior art, this utility model has the following advantages and beneficial effects:
[0016] The cylindrical body of this utility model has air grooves distributed around its circumference, providing three air groove layout schemes. These schemes guide the air inside the cylinder into the required airflow and mix it thoroughly with the fuel to ensure complete combustion of the fuel. This improves the combustion efficiency of the fuel and can be used as a core component of a high-power stove. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of the fuel guide air chamber of this utility model;
[0018] Figure 2 for Figure 1 A structural diagram viewed from below after removing the sealing base plate A;
[0019] Figure 3 A schematic diagram of the structure of the mixing chamber formed by the fuel guide air chamber;
[0020] Figure 4 for Figure 3 A sectional view;
[0021] Figure 5 This is a cross-sectional view of one implementation direction in the embodiment;
[0022] Figure 6This is a schematic diagram showing that a counter-wind chute and a follow-wind chute are respectively arranged on the left and right sides of the fuel inlet in the embodiment.
[0023] Figure 7 A top view of the structure in which the entire flow guide tube cavity is equipped with counter-wind troughs.
[0024] The names corresponding to the reference numerals in the attached figures are as follows:
[0025] 1-Guide cylinder cavity, 2-Cylinder body, 21-Guide air cavity, 211-Sealing bottom plate A, 3-Top plate, 4-Guide arc surface, 5-Reverse wind groove, 6-Follow-wind groove, 7-Mixing cylinder, 71-Sealing bottom plate B, 711-Mixing cavity, 8-Fuel inlet, 81-Fuel delivery pipe, 9-Inlet direction. Detailed Implementation
[0026] The present invention will be further described in detail below with reference to the embodiments:
[0027] Example
[0028] like Figures 1-5 As shown, a fuel guiding air chamber for a combustion device includes a guiding cylinder cavity 1, which consists of a cylinder 2 and a top plate 3 located at the top of the cylinder 2 and sealed to the top of the cylinder 2. The top of the cylinder 2 is sealed by the top plate 3, and the guiding cylinder cavity 1 is an integrally formed structure. The bottom of the cylinder 2 of the guiding cylinder cavity 1 has an air inlet, and a fan is correspondingly provided at the air inlet of the guiding cylinder cavity 1. The air from the fan enters the internal cavity of the guiding cylinder cavity 1 through the air inlet. The internal cavity of the cylinder 2 is a guiding air chamber 21, and the cylinder wall of the cylinder 2 has several air slots (including long air slots and short air slots) distributed circumferentially. In all the air slots, the first option is that all the air slots are in the direction of airflow; since all the air slots of the cylinder 2 are in the direction of airflow, the fan blows air into the internal cavity of the cylinder 2, and after passing through all the air slots (the air slots act as airflow guides), a clockwise airflow is formed.
[0029] The second option: Figure 7 As shown, all air ducts are counter-current air ducts; since all air ducts in cylinder 2 are counter-current air ducts, the fan blows air into the inner cavity of cylinder 2, and after passing through all the air ducts (the air ducts serve to guide and comb the airflow), a counter-clockwise airflow is formed.
[0030] The third option is to designate some of the wind ducts as downwind ducts and the remaining wind ducts as upwind ducts.
[0031] The following air duct 6 is inclined clockwise from the inner wall to the outer wall of the cylinder 2 (so that the air discharged from the following air duct 6 of the cylinder 2 will form a clockwise wind), and the counter-wind duct 5 is inclined counter-clockwise from the inner wall to the outer wall of the cylinder 2 (so that the air discharged from the counter-wind duct 5 of the cylinder 2 will form a counter-clockwise wind).
[0032] In some embodiments, the third preferred technical solution of this embodiment is as follows: Figure 6 As shown, in all the air ducts, half are downwind ducts 6, and the other half are upwind ducts 5. All downwind ducts 6 form downwind duct units and are arranged on one half of the cylinder wall of the cylinder 2, and all upwind ducts 5 form upwind duct units and are arranged on the other half of the cylinder wall of the cylinder 2. In the actual setup of this embodiment, the fuel inlet A6 enters fuel in the intake direction 9 ( Figure 6 As indicated by the arrow, the fuel entering from the intake direction 6 is vaporized into gas in a high-temperature environment (if it is a gaseous fuel, vaporization is not required). The fuel inlet 8 is located at the junction of the downwind slot unit and the upwind slot unit. Part of the fuel entering from the intake direction 9 moves clockwise under the guidance of the downwind flow in the downwind slot unit and is fully mixed at the same time. The other part moves counterclockwise under the guidance of the upwind flow in the upwind slot unit and is fully mixed at the same time.
[0033] In some embodiments, the air inlet at the bottom of the cylinder 2 is sealed with a sealing base plate A211, and the sealing base plate A211 has an air inlet communicating with the guide air cavity 21. The top plate 3 and the top of the cylinder 2 have guide arc surfaces 4.
[0034] A mixing chamber comprising a fuel guide air chamber, wherein a mixing cylinder 7 is fitted outside the fuel guide air chamber, and a mixing cavity 711 is formed between the inner wall of the mixing cylinder 7 and the outer wall of the cylinder 2, and a fuel inlet 8 communicating with the mixing cavity 711 is opened in the cylinder wall of the mixing cylinder 7. Figure 6 As shown, the fuel guide chamber has half of a counter-current sluice 5 on the left side of the fuel inlet 8, and half of a forward-current sluice 6 on the right side of the fuel inlet 8. In the actual configuration of this embodiment, the fuel inlet 8 enters the fuel in the intake direction 9 ( Figure 6 As indicated by the arrow, fuel inlet 8 is located at the junction of the downwind trough unit and the upwind trough unit. Part of the fuel (gas or liquid fuel vaporized) entering from the intake direction 9 moves clockwise under the guidance of the downwind flow in the downwind trough unit and is fully mixed at the same time, while the other part moves counterclockwise under the guidance of the upwind flow in the upwind trough unit and is fully mixed at the same time.
[0035] like Figure 4 As shown, a sealing base plate B71 is sealed between the bottom end of the mixing cylinder 7 and the bottom end of the cylinder 2. The top of the mixing cylinder 7 is higher than the top plate 3. The part of the mixing cylinder 7 that is higher than the top plate 3 is the mixing outlet (the gaseous fuel or the vaporized fuel is fully mixed in the mixing chamber 711, and then discharged through the mixing outlet and fully burned).
[0036] The fuel inlet 8 is sealed with a fuel delivery pipe 81, and a delivery pump (preferably a pulse oil pump) is installed on the fuel delivery pipe 81.
[0037] In use, taking gaseous fuel as an example, a fan is installed at the air inlet of the guide tube cavity 1. The air from the fan enters the guide air chamber 21 of the guide tube cavity 1 through the air inlet. The gaseous fuel enters the mixing chamber 711 through the fuel inlet. Since the cylinder 2 of the guide tube cavity 1 is provided with multiple air slots, the required airflow is formed after all the air slots are combed and guided (any of the three types of airflow, but the third type of air slot design is preferred in this embodiment), and it is fully mixed with the gaseous fuel that enters successively, so as to achieve full mixing of fuel and air, so as to facilitate the subsequent full combustion of fuel.
[0038] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A fuel guide chamber for a combustion device, characterized in that: The device comprises a guide cylinder cavity which is composed of a cylinder and a top plate on the top of the cylinder and sealed with the top end of the cylinder, the bottom of the cylinder has an air inlet cylinder port, the inner cavity of the cylinder is a guide wind cavity, and the cylinder wall of the cylinder is circumferentially distributed with several wind grooves; in all wind grooves, all wind grooves are downwind grooves, or all wind grooves are upwind grooves, or part of the wind grooves are downwind grooves and the remaining wind grooves are upwind grooves.
2. A fuel plenum for a combustion device according to claim 1, wherein: In all wind grooves, half of the wind grooves are downwind grooves and the other half are upwind grooves, all downwind grooves form a downwind groove unit and are arranged on one half of the cylinder wall, and all upwind grooves form an upwind groove unit and are arranged on the other half of the cylinder wall.
3. A fuel plenum for a combustion device according to claim 1 or 2, wherein: The wind grooves include long wind grooves and short wind grooves.
4. A fuel plenum for a combustion device according to claim 1 or 2, wherein: The downwind grooves are arranged to blow out in a clockwise direction from the inner wall to the outer wall of the cylinder, and the upwind grooves are arranged to blow out in an anticlockwise direction from the inner wall to the outer wall of the cylinder.
5. A fuel plenum for a combustion device according to claim 1, wherein: The bottom of the cylinder is closed with a sealing bottom plate A, and the sealing bottom plate A is provided with an air inlet port which is in communication with the guide wind cavity.
6. A fuel plenum for a combustion device according to claim 1, wherein: The top plate and the top end of the cylinder have a guide arc surface.
7. A mixing chamber formed by the fuel flow plenum of any one of claims 1 to 6, characterized in that: The fuel guide wind chamber is externally provided with a mixing cylinder, and a mixing cavity is formed between the inner wall of the mixing cylinder and the outer wall of the cylinder, and the cylinder wall of the mixing cylinder is provided with a fuel inlet which is in communication with the mixing cavity.
8. A fuel plenum for a combustion device according to claim 7, wherein: The fuel guide wind chamber is provided with half of the upwind grooves on the left side of the fuel inlet, and the fuel guide wind chamber is provided with half of the downwind grooves on the right side of the fuel inlet.
9. A fuel plenum for a combustion device according to claim 7, wherein: The bottom end of the mixing cylinder is sealingly connected with the bottom end of the cylinder, the top of the mixing cylinder is higher than the top plate, and the part of the cylinder cavity of the mixing cylinder which is higher than the top plate is a mixing outlet.
10. A fuel plenum for a combustion device according to claim 7, wherein: The fuel inlet is sealingly provided with a fuel delivery pipe, and the fuel delivery pipe is provided with a delivery pump.