Structure for forcibly distributing air and wall-mounted gas boiler combustion system
By setting up air channels and air inlets on the outside of the combustion chamber, combined with the fan design, the problem of uneven air distribution in traditional wall-hung boilers is solved, thereby optimizing flue gas emissions and improving combustion efficiency.
Patent Information
- Application Number
- CN202520314733.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-26
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2035-02-26
AI Technical Summary
Uneven air distribution in traditional wall-hung boilers leads to insufficient combustion efficiency and output power, and makes it difficult to effectively control the ratio of primary and secondary air, resulting in substandard flue gas emissions.
The structure employs forced air distribution, which ensures that air enters the combustion chamber in proportion by setting an air flow channel outside the combustion chamber and opening air intake holes on the sides and bottom. Combined with the fan design, it achieves precise control of primary and secondary air.
It has achieved effective control of flue gas emissions, improved the efficiency of the wall-hung boiler by 2-5%, reduced oxygen content and carbon monoxide emissions, and enhanced the overall performance of the combustion system.
Smart Images
Figure CN223807208U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a gas wall -hanging stove technical field especially a kind of structure and gas wall-hanging stove combustion system of forced distribution air. BACKGROUND
[0002] In the combustion system of gas wall-hanging stove, fan is usually installed on the upper portion of wall-hanging stove, and negative pressure is caused in the combustion chamber of wall-hanging stove by suction. Primary air and secondary air required for combustion are secondary air sucked in by the bottom of burner and primary air sucked in by the injection port of burner. If it is necessary to improve the combustion power of burner and obtain good flue gas emission, primary air must be controlled at 60%-70%. However, the traditional method for controlling primary air of wall-hanging stove is to add secondary air baffle at the bottom of burner. Since the bottom of combustion chamber of traditional wall-hanging stove is not sealed, it is very difficult to control primary air by secondary baffle, so that wall-hanging stove cannot obtain higher efficiency and output power, and therefore, it is particularly important to effectively control the reasonable distribution of air required for combustion into wall-hanging stove. SUMMARY
[0003] The utility model aims at providing a kind of structure and gas wall-hanging stove combustion system of forced distribution air, which can be used to adjust the ratio of primary air and secondary air.
[0004] The utility model can be realized by the following technical scheme: a kind of structure of forced distribution air, including air flow passage being arranged in the outside of combustion chamber, side air inlet hole being arranged in the side of combustion chamber and bottom air inlet hole being arranged in the bottom of combustion chamber, and air flow passage is communicated with combustion chamber by side air inlet hole and bottom air inlet hole.
[0005] Preferably, a burner is arranged in the combustion chamber, and the side air inlet hole and the bottom air inlet hole are respectively arranged at the side and the bottom of the burner.
[0006] Further preferably, the air inlet direction of the side air inlet hole is perpendicular to the length direction of the fire row of the burner.
[0007] Further preferably, the combustion chamber is symmetrically provided with a plurality of side air inlet holes on the left and right sides of the burner.
[0008] Further preferably, the height of the side air inlet hole is lower than the top fire hole of the burner.
[0009] Preferably, the side air inlet hole is a long circular hole arranged in a matrix.
[0010] Preferably, the bottom air inlet hole is a long circular hole arranged in a matrix.
[0011] Preferably, the combustion chamber is a hollow box structure enclosed by a top plate, a bottom plate, a front plate, a rear plate, a left side plate and a right side plate.
[0012] The bottom plate is provided with a bottom air inlet hole, the left side plate and the right side plate are provided with side air inlet holes, the top plate is provided with an air outlet, and the bottom plate is provided with a gas inlet.
[0013] Preferably, the combustion chamber is provided with an air inlet hole and an air flow channel formed outside the combustion chamber.
[0014] Further preferably, the air inlet hole is arranged outside the air outlet of the combustion chamber.
[0015] Preferably, the air flow channel is provided with a primary air flow channel corresponding to the injection port of the burner and communicating with the air flow channel.
[0016] Further preferably, the primary air flow channel is arranged on the front side of the burner.
[0017] In the utility model, the side air inlet holes on the side of the combustion chamber and the bottom air inlet holes on the bottom are secondary air holes. A part of the air in the air flow channel enters the combustion chamber as secondary air through the side air inlet holes and the bottom air inlet holes, and the remaining part enters the injection port of the burner as primary air through the primary air flow channel.
[0018] A gas wall-hanging stove combustion system comprising the structure for forcibly distributing air.
[0019] Preferably, the gas wall-hanging stove combustion system further comprises a heat exchanger and a fan.
[0020] The heat exchanger is arranged on the upper side of the combustion chamber, and the fan communicates with the combustion chamber.
[0021] Compared with the prior art, the utility model has the following beneficial effects:
[0022] 1. The structure for forcibly distributing air can be used to adjust the ratio of primary air and secondary air, so that the smoke emission is effectively controlled.
[0023] 2. The structure can adjust the area of the secondary air holes of the combustion chamber through the combustion condition, so that the primary air and the secondary air required for combustion can be optimally matched, and the structure is simple and convenient to adjust.
[0024] 3. The smoke enters the heat exchanger from the upper part of the burner, is sucked out by the fan and is discharged into the flue, so that the problem that the air leaked into the combustion system is not effectively utilized can be avoided.
[0025] 4. The wall-hanging stove of the utility model improves the flue gas emission, and the oxygen content reduction improves the efficiency of the wall-hanging stove by 2%-5%. BRIEF DESCRIPTION OF DRAWINGS
[0026] Fig. 1 Front view of the structure of the utility model for forced air distribution;
[0027] Fig. 2 Side view of the structure of the utility model for forced air distribution;
[0028] Fig. 3 Bottom view of the structure of the utility model for forced air distribution;
[0029] Fig. 4 Structure diagram of the rear plate of the combustion chamber of the utility model;
[0030] Fig. 5 Structure diagram of the side plate of the combustion chamber of the utility model;
[0031] Fig. 6 Structure diagram of the bottom plate of the combustion chamber of the utility model;
[0032] In the figure: 1 - combustion chamber, 11 - side air inlet hole, 12 - bottom air inlet hole, 13 - air outlet, 14 - gas inlet, 15 - front plate, 16 - rear plate, 17 - side plate, 18 - bottom plate, 19 - burner mounting bracket, 2 - burner, 3 - air inlet, 32 - air chamber front cover plate, 4 - heat exchanger, 5 - primary air flow channel. DETAILED DESCRIPTION
[0033] The utility model will be described in detail below in combination with the drawings and specific embodiments. The embodiment is implemented on the premise of the technical scheme of the utility model, and detailed implementation modes and specific operation processes are given, but the protection scope of the utility model is not limited to the following embodiments.
[0034] It should be noted that: similar signs and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.
[0035] Some embodiments of the utility model will be described in detail below in combination with the drawings. In the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.
[0036] Embodiment 1
[0037] A structure for forced air distribution, as shown in Figs. 1-3 It includes a combustion chamber 1, an air flow channel, a side air inlet hole 11 and a bottom air inlet hole 12.
[0038] Wherein, the air flow channel is arranged outside the combustion chamber 1, the side air inlet hole 11 is arranged on the side of the combustion chamber 1, the bottom air inlet hole 12 is arranged on the bottom, the air flow channel is communicated with the combustion chamber 1 through the side air inlet hole 11 and the bottom air inlet hole 12, that is, the secondary air can only enter the burner 2 from the side air inlet hole 11 and the bottom air inlet hole 12, and the ratio of the primary air and the secondary air required for combustion can be adjusted by adjusting the areas of the side air inlet hole 11 and the bottom air inlet hole 12.
[0039] Embodiment 2
[0040] A gas wall-hanging stove combustion system, comprising a combustion chamber 1, a burner 2, an air inlet chamber 3, a heat exchanger 4 and a fan.
[0041] Wherein, the air inlet chamber 3 is arranged outside the combustion chamber 1 and has a hollow box structure, the size of which is larger than that of the combustion chamber 1, and the air inlet chamber 3 is provided with an air inlet 31 and forms an air flow channel with the outer wall of the combustion chamber 1. The combustion chamber 1 is formed into a hollow box structure by a front plate 15, a rear plate 16, left and right side plates 17, a bottom plate 18 and a top plate, and the bottom plate is provided with a bottom air inlet hole 12 and a gas inlet 14, the left and right side plates 17 are provided with side air inlet holes 11, and the top plate is provided with an air outlet 13. The combustion chamber 1 further comprises a burner mounting bracket 19, the burner 2 is mounted in the combustion chamber 1 through the burner mounting bracket 19, and the air chamber front cover plate 32 of the air inlet chamber 3 and the front plate 15 of the combustion chamber 1 are detachable, which facilitates the installation and dismounting of the burner 2. The fan is communicated with the air outlet 13 of the combustion chamber 1, and the heat exchanger 4 is arranged on the upper side of the combustion chamber 1.
[0042] Embodiment 3
[0043] A structure for forced distribution of primary air, by sealing the wall-hanging stove combustion chamber 1, according to the required primary air coefficient designed, a certain area (30-40% of the total air inlet area) of secondary air holes is opened on the sealed combustion chamber 1, so as to limit the proportion of secondary air entering the burner, and the remaining air enters the burner suction port as primary air through the primary air flow channel 5 corresponding to the burner suction port. This structure can adjust the area of the secondary air hole of the combustion chamber through the combustion condition, so that the primary air and the secondary air required for combustion can reach the best ratio.
[0044] Specifically, as shown in Figs. 4-6 The combustion chamber 1 is composed of a combustion chamber rear plate 16, combustion chamber left and right side plates 17, a combustion chamber bottom plate 18 and a burner mounting bracket 19. The combustion chamber front cover plate (front plate 15) is a detachable cover plate for sealing the front part of the combustion chamber 1 after the installation of the burner 2.
[0045] In addition to the secondary air entering the combustion chamber 1, the remaining air will be diverted to the suction port of the burner 2 to enter the burner 2.
[0046] Because the primary air and the secondary air are effectively controlled, when debugging the combustion condition, the optimal distribution ratio of the primary air and the secondary air can be adjusted according to the oxygen content, the carbon monoxide content, the carbon dioxide content, the efficiency and the like in the flue gas emission. That is, the required amount of the secondary air is adjusted by changing the opening area size of the left and right side plates 17 and the combustion chamber bottom plate 18 of the combustion chamber, so that the size of the primary air is controlled.
[0047] The structure of the utility model forces the distribution of the primary air to control the air of the wall-hanging stove, the air is sucked into the wall-hanging stove combustion system by the air suction direction of the fan, enters the combustion chamber 1 two sides along the air inlet air chamber 3, because the combustion chamber 1 is closed, part of the air can only enter the burner 2 from the side air inlet hole 11 of the combustion chamber 1 and the bottom air inlet hole 12 at the bottom of the combustion chamber 1, and the remaining air will all enter the primary air injection port. The primary air and the secondary air entering the combustion chamber 1 complete primary combustion and secondary combustion after mixing with the gas. The flue gas enters the heat exchanger 4 from the upper part of the burner 2, is sucked out by the fan and is discharged into the flue, so that the air entering the combustion system without being effectively utilized due to air leakage is avoided.
[0048] The structure of the utility model is applied to the wall-hanging stove structure, and the ratio of the primary air and the secondary air is adjusted through the above structure. The flue gas emission is effectively controlled.
[0049] The flue gas emission of the original structure is as follows:
[0050] The oxygen content is 10-11.5%;
[0051] The carbon monoxide content is >100ppm (under the condition that the primary air coefficient = 1);
[0052] The structure of the utility model is as follows:
[0053] The oxygen content is 8.8-10%;
[0054] The carbon monoxide content is <100ppm (under the condition that the primary air coefficient = 1);
[0055] The flue gas emission of the wall-hanging stove is improved through the structure of the utility model, and the efficiency of the wall-hanging stove is improved by 2%-5% due to the reduction of the oxygen content.
[0056] The above description of the embodiments is for facilitating the understanding and use of the utility model by ordinary skilled persons in the technical field. The person skilled in the art can obviously easily make various modifications to the embodiments, and apply the general principles described herein to other embodiments without creative labor. Therefore, the utility model is not limited to the above embodiments, and the improvements and modifications made by the person skilled in the art without departing from the scope of the utility model should be within the protection scope of the utility model.
Claims
1. A structure for forced air distribution, characterized by, The air flow channel is arranged outside the combustion chamber (1), the side air inlet hole (11) is arranged on the side of the combustion chamber (1), and the bottom air inlet hole (12) is arranged on the bottom of the combustion chamber (1), and the air flow channel is communicated with the combustion chamber (1) through the side air inlet hole (11) and the bottom air inlet hole (12).
2. The structure for forced distribution of air according to claim 1, wherein The combustion chamber (1) is provided with a burner (2), and the side air inlet hole (11) and the bottom air inlet hole (12) are arranged on the side and the bottom of the burner (2) respectively.
3. The structure for forced distribution of air according to claim 2, wherein The air inlet direction of the side air inlet hole (11) is perpendicular to the length direction of the fire row of the burner (2).
4. The structure for forced distribution of air according to claim 2, wherein The combustion chamber (1) is symmetrically provided with a plurality of side air inlet holes (11) on the left and right sides of the burner (2), and the height of the side air inlet hole (11) is lower than the top fire hole of the burner (2).
5. The structure for positively distributing air according to claim 1, wherein The side air inlet hole (11) and the bottom air inlet hole (12) are long circular holes arranged in a matrix.
6. The structure for positively distributing air according to claim 1, wherein The combustion chamber (1) is a hollow box structure surrounded by a top plate, a bottom plate, a front plate, a rear plate, a left side plate and a right side plate. The bottom plate is provided with a bottom air inlet hole (12), the left side plate and the right side plate are provided with a side air inlet hole (11), the top plate is provided with an air outlet (13), and the bottom plate is provided with a gas inlet (14).
7. The structure for positively distributing air according to claim 1, wherein The combustion chamber (1) is provided with an air inlet hole (31) outside the combustion chamber (1), and the air inlet hole (31) is arranged outside the air outlet (13) of the combustion chamber (1).
8. The structure for forced distribution of air according to claim 7, wherein The structure of forcibly distributing air according to any one of claims 1-8.
9. A gas boiler combustion system, characterized in that, Further comprising a heat exchanger (4) and a fan; 10. The gas boiler burning system according to claim 9, characterized in that, The heat exchanger (4) is arranged on the upper side of the combustion chamber (1), and the fan is communicated with the combustion chamber (1). The heat exchanger (4) is arranged on the upper side of the combustion chamber (1), and the fan is communicated with the combustion chamber (1).