Gas stove

Abstract

The utility model provides a kind of gas stove, it is related to the technical field of gas stove, the utility model provides a kind of gas stove, which includes: burner and flow guide mechanism, flow guide mechanism includes fan and heating structure, the outlet of fan is connected with the mixing cavity of burner, to guide outside air to enter into mixing cavity;Heating structure is located the import side of fan, and heating structure is used to heat the air entering fan.In the embodiment, before the introduction of primary air, it needs to pass through the heating structure, the air passing through the heating structure is heated, and the air with temperature higher than room temperature enters the mixing cavity of burner, and after combining with gas, it can solve the problem of unstable combustion in low temperature environment and high emission.

Description

Technical Field

[0001] This utility model relates to the field of gas stove technology, and in particular to a gas stove. Background Technology

[0002] As an essential cooking appliance in modern kitchens, the combustion efficiency and stability of blower-type gas stoves directly affect the user experience. In traditional designs, the fan is usually installed at the bottom of the stove, employing a "direct suction-direct blowing" structure that directly draws in ambient air and blows it into the mixing chamber of the burner. This design means that the temperature of the air entering the combustion system depends entirely on the ambient temperature, which can meet basic combustion requirements under normal temperature conditions.

[0003] However, when used in winter or in extremely cold regions, the ambient temperature may drop to tens of degrees below zero Celsius, resulting in excessively low temperatures for the primary air drawn in. When this cold air mixes with the fuel gas, the mixture temperature drops significantly. This not only makes it difficult for the electric arc to ignite the mixture during the ignition phase but also leads to decreased flame stability during combustion. More seriously, low-temperature combustion significantly increases the amount of carbon monoxide (CO) produced in the flue gas, reducing thermal efficiency and posing safety hazards. Utility Model Content

[0004] The purpose of this utility model is to provide a gas stove that can alleviate the technical problem of low temperature of mixed gas in the mixing chamber and incomplete combustion to a certain extent.

[0005] This utility model provides a gas stove, including: a burner head and a flow guiding mechanism, wherein the flow guiding mechanism includes a fan and a heating structure, and the outlet of the fan is connected to the mixing chamber of the burner head to guide outside air into the mixing chamber; The heating structure is located on the inlet side of the fan, and the heating structure is used to heat the air entering the fan.

[0006] Furthermore, the drainage mechanism also includes an air duct, the fan is located inside the air duct, the air duct has an air inlet, and the heating structure is located between the air inlet and the fan.

[0007] Furthermore, the inlet of the fan faces the air inlet; And / or, the inlet of the fan faces away from the air inlet, and there is a gap between the outer wall of the fan and the inner wall of the air passage, the gap allowing air introduced from the air inlet to pass over the fan and enter the inlet of the fan.

[0008] Furthermore, the inner wall of the airway is covered with a heat insulation layer.

[0009] Furthermore, the gas stove also includes a housing with an opening. The airway includes a side panel and a cover plate. The side panel has an upper opening and a lower opening. The lower opening is connected to the upper opening, and the cover plate is connected to the upper opening.

[0010] Furthermore, the mixing chamber of the furnace head includes an inner ring burner cap drainage chamber and an outer ring burner cap drainage chamber, and each of the inner ring burner cap drainage chamber and the outer ring burner cap drainage chamber is connected to a drainage mechanism.

[0011] Furthermore, the gas stove also includes a filter screen, which is connected to the air inlet.

[0012] Furthermore, the filter screen has a flow-guiding slope on the side facing the inside of the air passage, which is used to guide the liquid on the filter screen to flow into the mesh of the filter screen.

[0013] Furthermore, the filter screen is detachably connected to the air passage.

[0014] Furthermore, both the fan and the heating structure are detachably connected to the air duct, so that the fan and the heating structure can be removed from the air inlet.

[0015] This utility model has at least the following advantages or beneficial effects: The gas stove provided by this utility model includes: a burner head and a flow guiding mechanism. The flow guiding mechanism includes a fan and a heating structure. The outlet of the fan is connected to the mixing chamber of the burner head to guide outside air into the mixing chamber. The heating structure is located on the inlet side of the fan and is used to heat the air entering the fan.

[0016] In this embodiment, the air needs to pass through a heating structure before being introduced. The air is heated by the heating structure, and the air with a temperature higher than room temperature enters the mixing chamber of the burner head. After it combines with the gas, it can solve the problems of unstable combustion and high emissions in low-temperature environments. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 A top view of a gas stove provided in an embodiment of this utility model (without the outer shell panel); Figure 2 for Figure 1 Sectional view along the AA direction; Figure 3 for Figure 1 Sectional view along the BB direction; Figure 4 for Figure 1 Sectional view along the CC direction; Figure 5 A schematic diagram of a gas stove provided for an embodiment of this utility model (with the outer shell panel and cover removed). Figure 6 An exploded view of the gas flow guiding mechanism of the gas stove provided in an embodiment of this utility model; Figure 7 A bottom view of the gas stove's flow guiding mechanism provided in an embodiment of this utility model.

[0019] Icons: 2-Inner ring burner cap; 3-Outer ring burner cap; 4-Fan; 5-Heating structure; 6-Air duct; 7-Cover plate; 8-Upper part; 9-Lower part; 11-Knob assembly; 12-Fan control board; 13-Chassis; 14-Air inlet; 15-Filter. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0022] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0023] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to 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. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0025] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 based on the specific circumstances.

[0026] like Figures 1-7 As shown, the gas stove provided by this utility model includes: a burner head and a flow diversion mechanism.

[0027] The number of burners can be one or more.

[0028] like Figure 2 As shown, the air intake mechanism includes a fan 4 and a heating structure 5. The outlet of the fan 4 is connected to the mixing chamber of the furnace head to guide outside air into the mixing chamber.

[0029] The heating structure 5 is located on the inlet side of the fan 4, and is used to heat the air entering the fan 4. The heating structure 5 can be a controllable PTC thermistor or a metal heating element, with a power range of approximately 50 W–200 W and a surface temperature reaching 150℃–250℃.

[0030] In this embodiment, the primary air needs to pass through heating structure 5 before being introduced. The air is heated by heating structure 5, and the air with a temperature higher than room temperature enters the mixing chamber of the burner head. After combining with the gas, it can solve the problems of unstable combustion and high emissions in low-temperature environments. The primary air can be stably preheated to 40–80°C, and CO emissions can be reduced by 30–50% in winter, while thermal efficiency can be improved by 3–5 percentage points.

[0031] like Figure 5 and Figure 6 As shown, the drainage mechanism also includes an air duct 6, the fan 4 is located inside the air duct 6, the air duct 6 has an air inlet 14, and the heating structure 5 is located between the air inlet 14 and the fan 4.

[0032] The function of the air duct 6 is to allow heated gas to enter the fan 4 while preventing unheated air from entering. Furthermore, the air duct 6 forms an independent cavity that encloses the fan 4, providing protection. Since the air duct 6 does not share a cavity with the internal electronic components of the cooktop, oil and water vapor are less likely to enter the fan 4, reducing the risk of corrosion and short circuits, and increasing the overall lifespan of the appliance by ≥30%.

[0033] like Figure 2 As shown, in this embodiment, the gas stove includes a casing, which includes a chassis 13 with an opening. A gas duct 6 is located inside the casing, and its lower opening connects to the opening on the chassis 13. The gas duct 6 extends vertically. In the first fan 4 arrangement, the inlet of the fan 4 faces the air inlet 14, i.e., the inlet faces downwards. The upward airflow, after being heated, can directly flow into the fan 4. By placing the opening on the chassis 13, the air inlet 14 is effectively isolated from the high-temperature zone of the burner, preventing hot flue gas from flowing back and causing the fan 4 to overheat, thus extending its lifespan.

[0034] like Figure 2 As shown, in the second arrangement of the fan 4, the inlet of the fan 4 faces away from the air inlet 14, i.e., upwards, and there is a gap between the outer wall of the fan 4 and the inner wall of the air duct 6. The airflow flowing in from the air inlet passes through the heating structure 5, passes through the gap, and then rotates 180° before entering the fan 4. Setting the inlet of the fan 4 upwards, compared to the first arrangement, further increases the distance between the inlet of the fan 4 and the air inlet 14 of the air duct 6. With the increased distance, the volume of the heating structure 5 located in front of the fan 4 can be increased, thereby improving heating efficiency. In this embodiment, one burner head corresponds to two flow guiding mechanisms. The inlet of the fan 4 corresponding to the mixing chamber of the outer ring burner 3 faces downwards, and the inlet of the fan 4 corresponding to the mixing chamber of the inner ring burner 2 faces upwards.

[0035] To reduce heat dissipation, a heat insulation layer is attached to the inner wall of the air duct 6. The heat insulation layer can be a 5mm–10mm aerogel or ceramic fiber heat insulation layer, which reduces heat loss and lowers the temperature rise of the outer casing.

[0036] like Figure 6 As shown, the air duct 6 includes a side panel and a cover plate 7. The side panel has an upper opening and a lower opening, and the lower opening is connected to the upper opening. The connection is sealed with adhesive to improve airtightness. The cover plate 7 is connected to the upper opening, and similarly, the connection is sealed with adhesive. For ease of assembly, the side panel can be divided into upper and lower parts 9, both of which are cylindrical. The upper part 8 has an assembly hole that connects to the outlet of the fan 4. The upper end of the lower part 9 is joined to the upper part 8 and sealed with adhesive. The lower part 9 is sealed to the base 13 of the outer casing. Condensate inside the outer casing must not drip into the fan 4 to reduce electrical safety hazards.

[0037] Airway 6 is made of 1mm–1.5mm aluminum plate or high-temperature resistant plastic.

[0038] like Figures 3-5 As shown, the mixing chamber of the burner head includes an inner ring burner cap 2 drainage chamber and an outer ring burner cap 3 drainage chamber. Each of the inner ring burner cap 2 drainage chamber and the outer ring burner cap 3 drainage chamber is connected to a drainage mechanism. Gas is injected into the inner ring burner cap 2 drainage chamber and the outer ring burner cap 3 drainage chamber through the two independent drainage mechanisms, thereby achieving independent adjustment.

[0039] The outer walls of two drainage mechanisms can be connected together, and the top openings of the two outer walls can be closed by a cover plate 7.

[0040] like Figure 7 As shown, the gas stove also includes a filter screen 15, which is connected to the air inlet 14. The filter screen has a mesh size of φ1–2mm and is used to block dust and insects. Furthermore, the side of the filter screen 15 facing the inside of the gas passage 6 is provided with a flow-guiding slope. The flow-guiding slope is used to guide the liquid on the filter screen 15 to flow towards the mesh of the filter screen 15. The filter screen 15 can be set in a funnel shape, that is, low in the middle and high around the edges, so that condensate can be guided to the outside of the outer shell.

[0041] The filter screen 15 is detachably connected to the air passage 6, which facilitates cleaning of the clogged filter screen 15.

[0042] Both the fan 4 and the heating structure 5 are detachably connected to the air duct 6 so that the fan 4 and the heating structure 5 can be removed from the air inlet 14.

[0043] The fan 4 can be connected to the mixing chamber via a plug-in method. Specifically, a slot can be provided on the side wall of the mixing chamber, and a buckle can be provided at the outlet of the fan 4. The fan 4 is engaged by sliding it upwards, and the fan 4 can be removed by pulling it downwards. Similarly, the heater can be connected to the air duct 6 in the same way.

[0044] like Figure 1 As shown, the gas stove also includes an ignition control board for controlling burner ignition and a fan control board 12 for controlling the fan 4. The ignition control board is located below the knob assembly 11, and the fan control board 12 is located in the middle of the chassis 13. The two are respectively located in different positions on the chassis 13, achieving spatial isolation. The fan control board 12 is located in the low-temperature zone outside the gas duct 6 and is connected to the heating structure 5 through a high-temperature resistant wire harness passing through the sealed gland, meeting the IP54 waterproof requirement.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A gas stove, characterized in that, include: The furnace head and the flow guiding mechanism include a fan (4) and a heating structure (5). The outlet of the fan (4) is connected to the mixing chamber of the furnace head to guide outside air into the mixing chamber. The heating structure (5) is located on the inlet side of the fan (4) and is used to heat the air entering the fan (4).

2. The gas stove according to claim 1, characterized in that, The drainage mechanism also includes an air passage (6), the fan (4) is located inside the air passage (6), the air passage (6) has an air inlet (14), and the heating structure (5) is located between the air inlet (14) and the fan (4).

3. The gas stove according to claim 2, characterized in that, The inlet of the fan (4) faces the air inlet (14). And / or, the inlet of the fan (4) faces away from the air inlet (14), and there is a gap between the outer wall of the fan (4) and the inner wall of the air passage (6), the gap allowing air introduced from the air inlet (14) to pass over the fan (4) and enter the inlet of the fan (4).

4. The gas stove according to claim 2, characterized in that, The inner wall of the airway (6) is covered with a heat insulation layer.

5. The gas stove according to claim 2, characterized in that, The gas stove also includes a housing, on which an opening is provided; The airway (6) includes a side panel and a cover plate (7). The side panel has an upper opening and a lower opening. The lower opening is connected to the lower opening, and the cover plate (7) is connected to the upper opening.

6. The gas stove according to claim 2, characterized in that, The mixing chamber of the furnace head includes an inner ring flame cap (2) drainage chamber and an outer ring flame cap (3) drainage chamber, and each of the inner ring flame cap (2) drainage chamber and the outer ring flame cap (3) drainage chamber is connected to a drainage mechanism.

7. The gas stove according to any one of claims 2-6, characterized in that, The gas stove also includes a filter screen (15), which is connected to the air inlet (14).

8. The gas stove according to claim 7, characterized in that, The filter screen (15) has a flow-guiding slope on the side facing the inside of the air passage (6), which is used to guide the liquid on the filter screen (15) to flow to the mesh of the filter screen (15).

9. The gas stove according to claim 7, characterized in that, The filter (15) is detachably connected to the air passage (6).

10. The gas stove according to any one of claims 2-6, characterized in that, The fan (4) and the heating structure (5) are both detachably connected to the air duct (6) so that the fan (4) and the heating structure (5) can be removed from the air inlet (14).

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