CN219828833U - Venturi mixer for condensing wall-mounted furnace - Google Patents
Venturi mixer for condensing wall-mounted furnace Download PDFInfo
- Publication number
- CN219828833U CN219828833U CN202321364925.5U CN202321364925U CN219828833U CN 219828833 U CN219828833 U CN 219828833U CN 202321364925 U CN202321364925 U CN 202321364925U CN 219828833 U CN219828833 U CN 219828833U
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- gas
- venturi
- wall
- intake pipe
- air inlet
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- 210000003437 trachea Anatomy 0.000 claims abstract 2
- 230000000694 effects Effects 0.000 abstract description 8
- 239000007789 gas Substances 0.000 description 69
- 238000002485 combustion reaction Methods 0.000 description 10
- 239000002737 fuel gas Substances 0.000 description 9
- 239000000446 fuel Substances 0.000 description 6
- 238000009792 diffusion process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000008602 contraction Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
Landscapes
- Gas Burners (AREA)
Abstract
A venturi mixer for condensing hanging stove, including venturi, venturi includes entry section, constriction section and expansion section, and venturi's entry section's tip is provided with the air inlet, and air inlet department is provided with guiding device, guiding device includes support and gas intake pipe, gas intake pipe is hollow cylindrical trachea, and gas intake pipe and venturi coaxial setting are provided with the guide plate in the outside of gas intake pipe, leave combustion-supporting gas air inlet gap between gas intake pipe's the outer wall and venturi's the air inlet inner wall. The utility model provides a venturi mixer for a condensing wall-mounted furnace, which can achieve an ideal gas-combustion-supporting gas mixing effect under lower gas pressure, is easy to adjust, and is suitable for small wall-mounted furnaces and household use environments.
Description
Technical Field
The utility model relates to a venturi mixer, in particular to a venturi mixer for a condensing wall-mounted furnace, and belongs to the technical field of wall-mounted furnace application.
Background
In the condensing wall-mounted furnace, fuel gas and air enter a combustor for combustion after being premixed, and a currently common premixing device is a venturi mixer which can fully mix the fuel gas and the air to form a uniform combustion mixture. By optimizing the flow mode and mixing process of the gas, the venturi mixer can realize efficient combustion, maximally utilize the energy of the fuel, and improve the thermal efficiency. However, in the existing condensing wall-mounted furnace, a gas pipe is axially arranged at an inlet section, gas axially enters the venturi pipe, a combustion-supporting gas inlet is arranged at the side surface of the inlet section, and combustion-supporting gas such as air enters the venturi pipe from the side surface combustion-supporting gas inlet, wherein the gas inlet is required to be provided with a gas regulating valve and a combustion-supporting gas regulating valve, the regulating mechanism is complex, and the two valves are difficult to regulate to the optimal mixing rate; and the shunt air inlet structure has high requirement on the gas pressure, and when the gas pressure is lower, the speed and the kinetic energy of the gas are possibly insufficient to generate enough turbulence and diffusion, so that the mixing is uneven or incomplete, the wall-mounted furnace is difficult to ignite and incomplete to burn, and the thermal efficiency and the applicable environment of the wall-mounted furnace are reduced. The problems existing above make the current Venturi mixer difficult to adjust when being applied to a small-sized wall-mounted furnace, and are not applicable to areas with lower gas pressure, so that the application environment of the wall-mounted furnace is limited.
Disclosure of Invention
The utility model aims to provide a venturi mixer for a condensing wall-mounted furnace, which can achieve an ideal gas-combustion-supporting gas mixing effect under lower gas pressure, is easy to adjust, and is suitable for small wall-mounted furnaces and household use environments.
The venturi mixer for the condensing wall-mounted furnace comprises a venturi tube, wherein the venturi tube comprises an inlet section, a contraction section and an expansion section, an air inlet is formed in the end part of the inlet section of the venturi tube, a flow guiding device is arranged at the air inlet and comprises a bracket and a gas inlet pipe, the gas inlet pipe is a hollow cylindrical air pipe, the gas inlet pipe and the venturi tube are coaxially arranged, a flow guiding plate is arranged on the outer side of the gas inlet pipe, and a combustion-supporting gas inlet gap is reserved between the outer wall of the gas inlet pipe and the inner wall of the air inlet of the venturi tube;
further, the guide plates are fixedly arranged on the outer side wall of the gas inlet pipe, the guide plate body is obliquely arranged relative to the central axis of the gas inlet pipe or the guide plates are spirally arranged along the outer wall of the gas inlet pipe, a plurality of guide plates are arranged on the outer side wall of the gas inlet pipe, and the guide plates are distributed at equal intervals along the outer side wall of the gas inlet pipe;
further, the support is fixedly arranged at the air inlet of the end part of the venturi tube, the gas inlet tube is detachably arranged on the support through bolts or buckles, mounting threads are arranged at the far end of the gas inlet tube relative to the venturi tube, and the gas inlet tube is connected with the gas conveying tube through the mounting threads.
The utility model has the positive and beneficial technical effects that: the utility model can guide the gas to form spiral flow before the gas enters the mixer by arranging the flow guiding device at the gas inlet end, and has the following advantages:
1. the spiral flow of the fuel gas can improve the mixing efficiency, and the contact area of the fuel gas and the combustion-supporting gas can be increased, so that better mixing is promoted;
2. the flow direction and speed of the gas are changed by the guide plate, the gas is guided to form rotation or vortex in the mixer, the flow mode can generate turbulence and diffusion effect under lower gas pressure, so that the gas is better mixed with other media, the mixing effect of the gas at low pressure can be improved by the guide plate, uniform mixing between fuel and media such as air or oxygen is ensured, the combustion efficiency and stability are improved, and the guide plate is very important for ensuring the reliability of a combustion system, reducing fuel consumption and reducing emission;
3. improving the combustion effect: for the combustion process, uniformity and thorough mixing of the mixed gas are critical, and the spiral flow can improve the uniformity of gas mixing and better mix the fuel with the combustion supporting gas, thereby improving the combustion effect, reducing the consumption of the fuel, reducing the generation of emissions and improving the combustion stability. When the gas pressure is low, the velocity and kinetic energy of the gas may be insufficient to create sufficient turbulence and diffusion, resulting in uneven or incomplete mixing. In this case, by adding the gas guide plate, the gas can be guided to form spiral flow, and the mixing area and the contact area between the gas and other mediums are increased;
4. the fuel gas and the auxiliary fuel gas enter the mixer through the inlet, the oxygen-fuel ratio is adjusted only by adjusting the fuel gas valve, and the adjustment mode is simple and is suitable for small-sized wall-mounted furnaces.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present utility model.
Fig. 2 is a schematic view of a fuel gas inlet pipe according to an embodiment of the utility model.
FIG. 3 is a schematic cross-sectional view of one embodiment of the present utility model.
Description of the embodiments
In order to more fully explain the practice of the utility model, examples of the practice of the utility model are provided below, which are merely illustrative of the utility model and do not limit the scope of the utility model.
The utility model will be explained in further detail with reference to the accompanying drawings, in which: 1. an air inlet; 2. a shrinking section; 3. an expansion section; 4. a support; 5. a fuel gas inlet pipe; 6. installing a thread; 7. a deflector; 8. combustion-supporting gas intake gap.
As shown in the figure: the venturi mixer for the condensing wall-mounted furnace comprises a venturi tube, wherein the venturi tube comprises an inlet section, a contraction section 2 and an expansion section 3, an air inlet 1 is formed in the end part of the inlet section of the venturi tube, a flow guiding device is arranged at the air inlet, the flow guiding device comprises a bracket 4 and a gas inlet pipe 5, the gas inlet pipe is a hollow cylindrical air pipe, the gas inlet pipe and the venturi tube are coaxially arranged, a guide plate 7 is arranged on the outer side of the gas inlet pipe, a combustion-supporting gas inlet gap 8 is reserved between the outer wall of the gas inlet pipe and the inner wall of the air inlet of the venturi tube, and combustion-supporting gas enters the mixer through the combustion-supporting gas inlet gap; the guide plate is fixedly arranged on the outer side wall of the gas inlet pipe, the guide plate body is obliquely arranged relative to the central axis of the gas inlet pipe or the guide plate is spirally arranged along the outer wall of the gas inlet pipe, as shown in fig. 2, in the embodiment, the guide plate is arranged on the outer side wall of the gas inlet pipe and is obliquely opposite to the axis of the cylinder, the design ensures that gas can be influenced by the surface of the guide plate when passing through the guide plate, the gas is guided to flow and the rotating effect is generated, and a plurality of guide plates are arranged on the outer side wall of the gas inlet pipe and are equidistantly distributed along the outer side wall of the gas inlet pipe; the guide plate can also be made into a spiral guide plate similar to threads, and the purpose of rotating the air flow can also be achieved; as shown in fig. 3, the air inlet of the venturi tube end is provided with a bracket 4, the gas inlet tube is detachably arranged on the bracket through a bolt, the gas inlet tube is provided with a mounting thread 6 relative to the far end of the venturi tube, the gas inlet tube is connected with a gas conveying tube through the mounting thread, the gas conveying tube is not shown in the figure, and the structure ensures that the flow guiding device is easier to mount in production and manufacture, and saves labor cost.
Having described embodiments of the present utility model in detail, it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the scope and spirit of the utility model as defined in the appended claims, and any simple, equivalent changes and modifications to the above examples are intended to be within the scope of the present utility model and the utility model is not limited to the embodiments as set forth in the specification.
Claims (3)
1. A venturi mixer for condensing hanging stove, its characterized in that: including venturi, venturi includes entry section, constriction section and expansion section, and venturi's entry section's tip is provided with the air inlet, and air inlet department is provided with guiding device, guiding device includes support and gas intake pipe, gas intake pipe is hollow cylindrical trachea, and gas intake pipe and the coaxial setting of venturi are provided with the guide plate in the outside of gas intake pipe, leave combustion-supporting gas air inlet gap between gas intake pipe's outer wall and venturi's air inlet inner wall.
2. The venturi mixer for a condensing wall-mounted boiler of claim 1, wherein: the guide plates are fixedly arranged on the outer side wall of the gas inlet pipe, the guide plate body is obliquely arranged relative to the central axis of the gas inlet pipe or spirally and spirally arranged along the outer wall of the gas inlet pipe, a plurality of guide plates are arranged on the outer side wall of the gas inlet pipe, and the guide plates are equidistantly distributed along the outer side wall of the gas inlet pipe.
3. The venturi mixer for a condensing wall-mounted boiler of claim 1, wherein: the support is fixedly arranged at the air inlet of the end part of the venturi tube, the gas inlet tube is detachably arranged on the support through bolts or buckles, mounting threads are arranged at the far end of the gas inlet tube relative to the venturi tube, and the gas inlet tube is connected with the gas conveying tube through the mounting threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321364925.5U CN219828833U (en) | 2023-05-31 | 2023-05-31 | Venturi mixer for condensing wall-mounted furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321364925.5U CN219828833U (en) | 2023-05-31 | 2023-05-31 | Venturi mixer for condensing wall-mounted furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219828833U true CN219828833U (en) | 2023-10-13 |
Family
ID=88280051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321364925.5U Active CN219828833U (en) | 2023-05-31 | 2023-05-31 | Venturi mixer for condensing wall-mounted furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219828833U (en) |
-
2023
- 2023-05-31 CN CN202321364925.5U patent/CN219828833U/en active Active
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