Gas stove

Abstract

The utility model discloses a gas stove, relates to the technical field of gas stoves, and aims to solve the problem that the gas of the conventional gas stove is not easy to burn sufficiently. The gas stove comprises a burner, an injection pipe assembly and a fire cover assembly. A gas mixing cavity with an opening is formed in the furnace end. The injection pipe assembly communicates with the gas mixing cavity. And the fire cover assembly covers the opening of the furnace end. A fire outlet hole is formed in the fire cover assembly and communicates with the gas mixing cavity. The cross-sectional area of an opening of one end, close to the gas mixing cavity, of each fire outlet hole is smaller than that of an opening of one end, away from the gas mixing cavity, of each fire outlet hole. The gas stove is used for cooking food.

Description

Technical Field

[0001] The utility model relates to the technical field of gas stoves, in particular to a gas stove. Background Art

[0002] A gas stove refers to a kitchen appliance that uses combustible gas as fuel and is ignited by electronic pulses or piezoelectric ceramics for heating and cooking.

[0003] The main components of the combustion system in the gas stove include an ejector, an injection device, a burner and a fire cover. Among them, the fire cover is provided with a plurality of fire outlet holes so that the gas can burn through the fire outlet holes and heat the bottom of the cooker.

[0004] The apertures of the fire holes on current gas stoves are mostly small, which makes it difficult for the gas coming out of the fire holes to burn completely, thereby causing an increase in CO and smoke indicators, causing damage to human health. Utility Model Content

[0005] The utility model aims to provide a gas stove, aiming to solve the problem that the gas in the current gas stove is not easy to burn fully.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The utility model provides a gas stove, comprising a burner head, an ejector tube assembly and a fire cover assembly. The burner head forms a gas mixing cavity with an opening. The ejector tube assembly is connected to the gas mixing cavity. The fire cover assembly is covered on the opening of the burner head. A fire outlet hole is provided on the fire cover assembly, and the fire outlet hole is connected to the gas mixing cavity. The cross-sectional area of ​​the opening of the fire outlet hole close to one end of the gas mixing cavity is smaller than the cross-sectional area of ​​the opening of the fire outlet hole away from one end of the gas mixing cavity.

[0008] In the gas stove provided in the embodiment of the present application, the gas enters the gas mixing chamber inside the burner head and mixes with the primary air in the gas mixing chamber. Then the gas is ejected from the multiple fire outlet holes opened on the fire cover assembly, and then ignited, and the ignited flame heats the pots on the gas stove. Among them, when the gas passes through the fire outlet hole, it first passes through a section of the fire outlet hole with a smaller cross-sectional area. When the fluid passes through a space with a smaller volume, it will pass through at a higher speed. Therefore, the gas at this time can pass quickly, increasing the gas delivery amount, thereby ensuring that more sufficient heat can be output to the outside. Then the gas passes through a section of the fire outlet hole with a larger cross-sectional area. After the gas passes through this place, the flow rate will slow down due to the larger cross-sectional area. At the same time, the gas can be mixed with more secondary air here, making the gas more sufficient and preventing the gas from backfiring. Therefore, this design can not only increase the gas delivery amount and increase the firepower, but also prevent the occurrence of backfiring.

[0009] In some embodiments, the fire hole includes a first fire hole segment and a second fire hole segment. One end of the first fire hole segment is connected to the gas mixing chamber. Along the extension direction of the first fire hole segment, the area of ​​the cross section of the first fire hole segment remains unchanged. The cross section of the first fire hole segment is perpendicular to the extension direction of the first fire hole segment. The second fire hole segment is connected to the first fire hole segment. Along the extension direction of the second fire hole segment, the area of ​​the cross section of the second fire hole segment remains unchanged. The cross section of the second fire hole segment is perpendicular to the extension direction of the second fire hole segment. Along the extension direction of the first fire hole segment, the cross section of the first fire hole segment is smaller than the area of ​​the cross section of the second fire hole segment along the extension direction of the second fire hole segment.

[0010] In some embodiments, along the extension direction of the fire outlet hole, the cross-sectional area of ​​the fire outlet hole gradually increases. The cross-sectional area of ​​the fire outlet hole is perpendicular to the extension direction of the fire outlet hole.

[0011] In some embodiments, the burner head has a first annular chamber and a second annular chamber. The second annular chamber is nested with the first annular chamber, and the second annular chamber is located on the periphery of the first annular chamber. The fire cover assembly includes an inner ring fire cover and an outer ring fire cover. The inner ring fire cover is provided with a fire outlet hole. An inner ring gas mixing chamber is formed between the inner ring fire cover and the first annular chamber, and the fire outlet hole is connected to the inner ring gas mixing chamber. The outer ring fire cover is provided with a fire outlet hole. An outer ring gas mixing chamber is formed between the outer ring fire cover and the second annular chamber, and the fire outlet hole is connected to the outer ring gas mixing chamber. The gas mixing chamber includes an inner ring gas mixing chamber and an outer ring gas mixing chamber.

[0012] In some embodiments, along the extension direction of the fire hole on the inner ring fire cover, compared with the end of the fire hole far from the inner ring gas mixing chamber, the end of the fire hole close to the inner ring gas mixing chamber is closer to the central axis of the first annular chamber.

[0013] In some embodiments, the fire outlet holes on the inner ring fire cover are circular holes. The fire outlet holes on the outer ring fire cover are circular holes.

[0014] In some embodiments, the aperture of the first fire hole section of the fire outlet hole on the inner ring fire cover is greater than or equal to 2.0 mm, and the aperture of the first fire hole section of the fire outlet hole on the inner ring fire cover is less than or equal to 2.2 mm. The aperture of the second fire hole section of the fire outlet hole on the inner ring fire cover is greater than or equal to 2.4 mm, and the aperture of the second fire hole section of the fire outlet hole on the inner ring fire cover is less than or equal to 2.6 mm.

[0015] In some embodiments, the aperture of the first fire hole section of the fire outlet hole on the outer ring fire cover is greater than or equal to 1.8 mm, and the aperture of the first fire hole section of the fire outlet hole on the outer ring fire cover is less than or equal to 2.0 mm. The aperture of the second fire hole section of the fire outlet hole on the outer ring fire cover is greater than or equal to 2.2 mm, and the aperture of the second fire hole section of the fire outlet hole on the outer ring fire cover is less than or equal to 2.4 mm.

[0016] In some embodiments, the ejector tube assembly includes an inner ring fire ejector tube and an outer ring fire ejector tube. One end of the inner ring fire ejector tube is connected to the first annular chamber, and the other end of the inner ring fire ejector tube is provided with an inner ring fire nozzle. One end of the outer ring fire ejector tube is connected to the second annular chamber, and the other end of the outer ring fire ejector tube is provided with an outer ring fire nozzle. The aperture of the inner ring fire nozzle is greater than or equal to 0.8 mm and less than or equal to 0.86 mm. The aperture of the outer ring fire nozzle is greater than or equal to 1.4 mm and less than or equal to 1.46 mm.

[0017] In some embodiments, there is an angle between the axis of the fire outlet hole on the inner ring fire cover and the axis of the fire outlet hole on the inner ring fire cover, and the angle ranges from 10° to 20°. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 It is a cross-sectional view of the side of the outer ring fire cover in the prior art;

[0020] Figure 2 It is a cross-sectional view of the side of the inner ring fire cover in the prior art;

[0021] Figure 3 This is one of the side views of a gas stove provided by the utility model;

[0022] Figure 4 An exploded diagram of a gas stove provided by the utility model;

[0023] Figure 5 A top view of a gas stove provided by the utility model;

[0024] Figure 6 One of the cross-sectional views of the side of the outer ring fire cover provided by the utility model;

[0025] Figure 7 The second cross-sectional view of the side of the outer ring fire cover provided by the utility model;

[0026] Figure 8 This is one of the cross-sectional views of the side of the inner ring fire cover provided by the utility model;

[0027] Fig. 9 The second cross-sectional view of the side of the inner ring fire cover provided by the utility model;

[0028] Fig.10 This is a second side view of a gas stove provided by the utility model;

[0029] Fig.11 This is an overall view of a gas stove provided by the utility model;

[0030] Fig.12 This is an overall view of the pot support and the energy gathering ring provided by the utility model.

[0031] Figure markings: 010-outer ring fire cover; 020-inner ring fire cover; 030-fire outlet; 100-gas stove; 10-burner head; 101-gas mixing chamber; 11-first annular chamber; 12-second annular chamber; 20-injection pipe assembly; 201-side hole; 21-inner ring fire injection pipe; 22-outer ring fire injection pipe; 23-inner ring fire nozzle; 24-outer ring fire nozzle; 25-connecting plate; 26-air regulating plate; 30-fire cover assembly; 301-fire outlet; 3011-first fire hole section; 3012-second fire hole section; 31-inner ring fire cover; 32-outer ring fire cover; 40-bottom shell; 50-panel; 60-pot support; 70-energy focusing ring. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", "inside", "outside" and the like indicate directions or positional relationships based on the directions or relative positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. Unless otherwise specified, the above-mentioned directional description can be flexibly set in the process of actual application under the condition that the relative positional relationship shown in the accompanying drawings is satisfied.

[0034] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. It can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In the embodiments of the present invention, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, article or device. In the absence of more restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, article or device including the element.

[0037] In the embodiments of the present invention, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present invention should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0038] A gas stove refers to a kitchen appliance that uses direct fire heating with gas fuels such as liquefied petroleum gas, artificial gas, and natural gas.

[0039] The structure of the gas stove mainly includes a panel, a combustion component, an ignition device and a stove frame. Among them, the combustion component includes a burner, a mixing chamber, an ejector and a fire cover. The fire cover is provided with a fire outlet.

[0040] When the gas stove is working, the gas enters the mixing chamber and mixes with the air introduced by the ejector. This part of air is called primary air. The mixed gas is ejected from the fire outlet of the fire cover and ignited by the ignition device to form a flame. The air required for combustion is called secondary air. These flames are used to heat the cookers placed on the stove.

[0041] At present, most gas stoves use a honeycomb small fire design to make the flame evenly distributed on the bottom of the cooking pot and ensure that the bottom of the pot is evenly heated. This design will make the diameter of the fire outlet hole on the fire cover smaller, and the flow rate of the gas in the fire outlet hole will be higher. Figure 1 and Figure 2 As shown, Figure 1 It is a cross-sectional view of the side of the outer ring fire cover 010 in the prior art. Figure 2It is a cross-sectional view of the side of the inner ring fire cover 020 in the prior art. The fire inlet of the fire hole 030 is the same size as the fire outlet. When the gas quickly ejected from the fire hole 030 is burning, part of the gas will not have time to be fully mixed with the secondary air, so that part of the gas cannot be fully burned, thereby generating CO and smoke.

[0042] At the same time, under long-term high temperature environment, the smaller fire hole may deform and shrink due to thermal expansion, thereby affecting the gas spray volume and combustion effect.

[0043] Based on this, the embodiment of the present application provides a gas stove, such as Figure 3 and Figure 4 As shown, Figure 3 This is one of the side views of a gas stove 100 provided by the utility model. Figure 4 The utility model provides an exploded view of a gas stove 100, which may include a burner head 10, an ejector tube assembly 20 and a fire cover assembly 30. The burner head 10 forms a gas mixing chamber 101 with an opening.

[0044] like Figure 4 As shown, the ejector tube assembly 20 can be connected to the gas mixing chamber 101. The fire cover assembly 30 is covered on the opening of the burner head 10. The fire cover assembly 30 is provided with a fire outlet hole 301, and the fire outlet hole 301 is connected to the gas mixing chamber 101. Among them, the cross-sectional area of ​​the opening of the fire outlet hole 301 close to the gas mixing chamber 101 is smaller than the cross-sectional area of ​​the opening of the fire outlet hole 301 away from the gas mixing chamber 101.

[0045] The ejector tube assembly 20 can introduce primary air into the gas mixing chamber 101 to mix the primary air with the gas. The burner head 10 can mix the gas with the air to form a mixed gas suitable for combustion. The multiple fire outlet holes 301 distributed on the fire cover assembly 30 can ensure uniform distribution of the flame and achieve uniform heating. The gas passes through the fire outlet holes 301 from the gas mixing chamber 101 to the outside to be ignited, and then burns to provide heat.

[0046] In the gas stove 100 provided in the embodiment of the present application, the gas enters the gas mixing chamber 101 inside the burner head 10 and mixes with the primary air in the gas mixing chamber 101. The gas then sprays out from the multiple fire outlets 301 provided on the fire cover assembly 30, and is then ignited, and the ignited flame heats the cookware placed on the gas stove 100.

[0047] When the gas passes through the fire outlet hole 301, it first passes through a section of the fire outlet hole 301 with a smaller cross-sectional area. When a fluid passes through a space with a smaller volume, it passes through at a higher speed. Therefore, the gas can pass through quickly at this time, increasing the gas delivery amount, thereby ensuring that sufficient heat can be output to the outside.

[0048] Then the gas passes through a section of the fire outlet hole 301 with a larger cross-sectional area. After the gas passes through this section, the flow rate will be slowed down due to the larger cross-sectional area. At the same time, the gas can be mixed with more secondary air here, making the gas more complete and preventing the gas from backfiring. Therefore, this design can increase the gas delivery volume and firepower, and can also prevent the occurrence of backfiring.

[0049] For example, Figure 5 As shown, Figure 5 This is a top view of a gas stove 100 provided by the utility model, and the number of the fire holes 301 can be multiple, and the multiple fire holes 301 are evenly distributed on the fire cover assembly 30. Such an arrangement enables the flames ejected from the fire holes 301 to evenly heat the bottom of the cooker.

[0050] In some embodiments, Figure 6 As shown, Figure 6 This is one of the cross-sectional views of the outer ring fire cover provided by the utility model. The fire hole 301 may include a first fire hole section 3011 and a second fire hole section 3012. One end of the first fire hole section 3011 is connected to the gas mixing chamber 101 ( Figure 4 ) is connected. Along the extension direction of the first fire hole segment 3011, the area of ​​the cross section of the first fire hole segment 3011 remains unchanged. The cross section of the first fire hole segment 3011 is perpendicular to the extension direction of the first fire hole segment 3011.

[0051] It can be seen that the first fire hole section 3011 extends in a straight line, which enables the gas to be transmitted more smoothly in the first fire hole section 3011, thereby increasing the gas transportation volume. In addition, the design of the straight-line extension of the fire outlet hole 301 helps the gas flow to be ejected straight in one direction, which can achieve a more uniform flame distribution and ensure a relatively balanced heat distribution on the entire heating surface.

[0052] like Figure 6 As shown, the second fire hole segment 3012 can be connected to the first fire hole segment 3011. Along the extension direction of the second fire hole segment 3012, the area of ​​the cross section of the second fire hole segment 3012 remains unchanged. The cross section of the second fire hole segment 3012 is perpendicular to the extension direction of the second fire hole segment 3012. Along the extension direction of the first fire hole segment 3011, the cross section of the first fire hole segment 3011 is smaller than the area of ​​the cross section of the second fire hole segment 3012 along the extension direction of the second fire hole segment 3012.

[0053] Similarly, the second fire hole section 3012 also extends in a straight line, which can also make the transmission of the gas in the second fire hole section 3012 smoother and increase the transportation volume of the gas.

[0054] The fire outlet hole 301 arranged in this way has a stepped cross section along the direction parallel to the axis. The stepped fire outlet hole 301 is easier to process and is more convenient to manufacture.

[0055] For example, Figure 6 As shown, the extension direction of the first fire hole section 3011 and the second fire hole section 3012 can be set in the vertical direction. The vertical ignition hole design helps the flame generated by the combustion of gas to burn vertically upward, so that the flame formed is more stable and not easily disturbed by external airflow. At the same time, the flame burning in the vertical direction is not easy to spread outward, which increases the operating safety for the user.

[0056] For example, Figure 6 As shown, the axes of the first fire hole section 3011 and the second fire hole section 3012 can be on the same straight line. In this way, the gas can be transmitted on a straight line, which speeds up the transmission speed of the gas, further increases the gas delivery volume, and increases the firepower.

[0057] In other embodiments, the axes of the first fire hole segment 3011 and the second fire hole segment 3012 may be parallel but not on the same straight line. The axes of the first fire hole segment 3011 and the second fire hole segment 3012 may not be on the same straight line and are not parallel, and there is a certain angle between the two axes. The two fire hole segments may also be connected at other angles as long as the gas can be smoothly output and burned.

[0058] In some embodiments, Figure 7 and Figure 8 As shown, Figure 7 The second cross-sectional view of the side of the outer ring fire cover provided by the utility model, Figure 8 This is one of the cross-sectional views of the inner ring fire cover provided by the present invention. The cross-sectional area of ​​the fire hole 301 can gradually increase along the extension direction of the fire hole 301. The cross-sectional area of ​​the fire hole 301 is perpendicular to the extension direction of the fire hole 301.

[0059] At this time, the cross section of the fire outlet 301 along the direction parallel to the axis is trapezoidal. The fire outlet 301 arranged in this way has a relatively simple structure, is not easy to accumulate food residues and grease, and is convenient for users to clean and maintain daily. At the same time, it can also achieve the effect of increasing the gas volume and making the gas burn completely.

[0060] In other embodiments, the cross-sectional area of ​​the fire hole 301 may be arranged in other ways. The cross-sectional area of ​​the fire hole 301 may be increased first and then decreased, as long as the cross-sectional area of ​​the first fire hole segment 3011 is smaller than the cross-sectional area of ​​the second fire hole segment 3012.

[0061] In some embodiments, Figure 4As shown, the furnace head 10 may have a first annular chamber 11 and a second annular chamber 12 . The second annular chamber 12 is nested with the first annular chamber 11 , and the second annular chamber 12 is located at the outer periphery of the first annular chamber 11 .

[0062] The fire cover assembly 30 may include an inner ring fire cover 31 and an outer ring fire cover 32. The inner ring fire cover 31 is provided with a fire outlet hole 301. An inner ring gas mixing chamber is formed between the inner ring fire cover 31 and the first annular chamber 11, and the fire outlet hole 301 is connected to the inner ring gas mixing chamber. The outer ring fire cover 32 is provided with a fire outlet hole 301. An outer ring gas mixing chamber is formed between the outer ring fire cover 32 and the second annular chamber 12, and the fire outlet hole 301 is connected to the outer ring gas mixing chamber. The gas mixing chamber 101 includes an inner ring gas mixing chamber and an outer ring gas mixing chamber.

[0063] The gas in the outer ring gas mixing chamber is ejected through the ignition holes 301 on the outer ring fire cover 32 and then ignited. The gas in the inner ring gas mixing chamber is ejected through the ignition holes 301 on the inner ring fire cover 31 and then ignited.

[0064] The fire conditions of the inner ring mixing chamber and the outer ring mixing chamber are controlled separately, so that the corresponding size of fire can be turned on according to the specific fire power required by the cooker.

[0065] The number of fire holes 301 on the inner ring fire cover 31 connected to the inner ring gas mixing chamber is small and concentrated in the middle, which is more suitable for heating cookers with a smaller bottom area. At the same time, the inner ring fire generated at the inner ring fire cover 31 can quickly increase the heat output in a short time to meet the needs of rapid heating or fine control of firepower, such as stewing, boiling soup or frying when local high temperature is required.

[0066] The number of fire holes 301 on the outer ring fire cover 32 connected to the outer ring gas mixing chamber is large, and the outer ring fire cover 32 is located on the outer circle of the inner ring fire cover 31, so that the distribution area of ​​the fire holes 301 on the outer ring fire cover 32 is large. Therefore, the outer ring gas mixing chamber is suitable for heating cookers with a large bottom area. At the same time, the outer ring fire generated on the outer ring fire cover 32 can fully contact the bottom of the cooker, providing a large range and balanced heat distribution, which is more suitable for long-term cooking or food that requires a lot of heat to cook.

[0067] The operator can also use the gas in the inner ring gas mixing chamber and the outer ring gas mixing chamber for heating at the same time, so that the bottom of the cooker is evenly heated.

[0068] Exemplarily, there may be an angle between the axis of the fire outlet hole 301 on the outer ring fire cover 32 and the axis of the outer ring fire cover 32 , and the angle may be in the range of 5° to 10°.

[0069] As an example, the angle between the extension direction of the first fire hole segment 3011 and the second fire hole segment 3012 of the fire hole 301 on the outer ring fire cover 32 and the horizontal direction can be 5°, 7° or 10°.

[0070] Compared with the inclination angle of the fire holes 301 on the inner ring fire cover 31, the inclination angle of the fire holes 301 on the outer ring fire cover 32 is relatively small. Because if the inclination angle of the fire holes 301 on the outer ring fire cover 32 is too large, the flames burning at the outermost fire holes 301 on the outer ring fire cover 32 may not act on the cooker, thereby causing a waste of gas.

[0071] At the same time, the flames generated by the fire outlet holes 301 with a smaller inclination angle have better stability, and the flames on the outermost circle side are not easily extinguished by external influences.

[0072] In some embodiments, Fig. 9 As shown, Fig. 9 The second cross-sectional view of the inner ring fire cover provided by the utility model, along the extension direction of the fire outlet hole 301 on the inner ring fire cover 31, compared with the end of the fire outlet hole 301 far away from the inner ring gas mixing chamber, the end of the fire outlet hole 301 close to the inner ring gas mixing chamber is close to the first annular chamber 11 ( Figure 4 )’s central axis.

[0073] For the fire outlet holes 301 on the inner fire cover, compared with being arranged in the vertical direction, the inclined arrangement can increase the contact area between the flame at the fire outlet holes 301 and the bottom of the kitchenware, thereby increasing the heating force of the flame on the kitchenware.

[0074] At the same time, the inclined fire outlet 301 can prevent the heat flow generated when the flame is sprayed from the fire outlet 301 from directly acting on the bottom of the cooker, so that the reaction force on the bottom of the cooker is small. The flame spraying direction is not blocked, and the speed of gas outflow can be accelerated, driving the air flow rate near it to increase, so that more secondary air is mixed with the gas. This is conducive to the full combustion of the gas and reduces the generation of CO and smoke.

[0075] In some embodiments, Fig. 9 As shown, the axis of the fire outlet hole 301 on the inner ring fire cover 31 may have an angle with the axis of the inner ring fire cover 31, and the angle may range from 10° to 20°.

[0076] As an example, the angle between the extension direction of the first fire hole segment 3011 and the second fire hole segment 3012 of the fire hole 301 on the inner ring fire cover 31 and the horizontal direction can be 10°, 15° or 20°.

[0077] The angle between the extension direction of the first fire hole section 3011 and the second fire hole section 3012 and the horizontal direction should not be too large. If the angle is too large, the flame ejected from the fire hole 301 will be too inclined, so it is difficult to ensure that the flame evenly covers the bottom of the cooker, resulting in uneven heating of the bottom of the pot, large temperature differences between different areas in the pot, and poor taste of the cooked dishes.

[0078] In some embodiments, Figure 5 As shown, the fire outlet hole 301 formed on the inner ring fire cover 31 can be a circular hole. The fire outlet hole 301 formed on the outer ring fire cover 32 can be a circular hole.

[0079] The circular hole design helps to form a uniform and stable flame profile, and the circular hole-shaped fire outlet 301 has relatively little impact on gas transportation, is not easy to cause air flow turbulence, is conducive to the stable combustion of the gas and air mixture, and avoids incomplete combustion or flashback.

[0080] In other embodiments, the shape of the fire hole 301 may also be other shapes, as long as the gas can be smoothly transmitted in the fire hole 301 and extend from the fire hole 301 to burn smoothly.

[0081] In some embodiments, the length of the first fire hole section 3011 of the fire hole 301 on the inner ring fire cover 31 can be 1.5 mm, and the aperture can range from 2.0 mm to 2.2 mm. The length of the second fire hole section 3012 of the fire hole 301 on the inner ring fire cover 31 can be 1.5 mm, and the aperture can range from 2.4 mm to 2.6 mm.

[0082] If the aperture of the fire hole 301 is too large, the flow rate of the gas in the fire hole 301 will be reduced, and the combustion speed of the gas on the side of the fire hole 301 away from the gas mixing chamber 101 may be greater than the speed of the gas ejection, which will cause the gas to burn in the fire hole 301, thereby causing backfire, which has certain safety hazards.

[0083] Meanwhile, if the aperture of the fire outlet 301 is too large, the amount of gas sprayed out will increase, and the gas consumption will also increase accordingly, which will easily cause a waste of gas and affect the energy-saving effect of the gas stove 100.

[0084] If the aperture of the fire outlet 301 is too small, the gas flow rate will be too high, so that part of the gas will be ignited before it can mix with the air, which will result in incomplete combustion due to lack of sufficient oxygen, thus generating CO and smoke, which will have a certain impact on human health.

[0085] Therefore, the aperture of the fire outlet hole 301 on the inner ring fire cover 31 should be within a suitable range. As mentioned above, the aperture of the first fire hole section 3011 on the inner ring fire cover 31 can be greater than or equal to 2.0 mm and less than or equal to 2.2 mm. As an example, the aperture of the first fire hole section 3011 on the inner ring fire cover 31 can be 2.0 mm, 2.1 mm, 2.15 mm or 2.2 mm, etc.

[0086] The aperture of the second fire hole section 3012 on the inner ring fire cover 31 can be greater than or equal to 2.4 mm and less than or equal to 2.6 mm. As an example, the aperture of the second fire hole section 3012 on the inner ring fire cover 31 can be 2.4 mm, 2.5 mm, 2.55 mm or 2.6 mm.

[0087] In some embodiments, the aperture of the first fire hole section 3011 of the fire hole 301 on the outer ring fire cover 32 may be greater than or equal to 1.8 mm and less than or equal to 2.0 mm. The aperture of the second fire hole section 3012 of the fire hole 301 on the outer ring fire cover 32 may be greater than or equal to 2.2 mm and less than or equal to 2.4 mm.

[0088] Exemplarily, the length of the first fire hole section of the fire outlet hole on the inner ring fire cover may be 1.5 mm, and the length of the second fire hole section may be 2.0 mm.

[0089] The principle is the same as above. If the aperture of the fire hole 301 on the outer ring fire cover 32 is too large or too small, there will be certain defects. Therefore, the aperture of the fire hole 301 should be within an appropriate range. As mentioned above, the aperture of the first fire hole section 3011 on the outer ring fire cover 32 can be greater than or equal to 1.8 mm and less than or equal to 2.0 mm. As an example, the aperture of the first fire hole section 3011 on the outer ring fire cover 32 can be 1.8 mm, 1.9 mm, 1.95 or 2.0 mm, etc.

[0090] The aperture range of the second fire hole section 3012 on the outer ring fire cover 32 can be greater than or equal to 2.2 mm and less than or equal to 2.4 mm. As an example, the aperture of the second fire hole section 3012 on the outer ring fire cover 32 can be 2.2 mm, 2.3 mm, 2.35 mm or 2.4 mm.

[0091] Exemplarily, the length of the first fire hole section of the fire outlet hole on the outer ring fire cover may be 2.0 mm, and the length of the second fire hole section may be 1.5 mm.

[0092] In some embodiments, Figure 4 and Fig.10 As shown, Fig.10The second side view of a gas stove provided by the utility model, the ejector assembly 20 may include an inner ring fire ejector 21 and an outer ring fire ejector 22. One end of the inner ring fire ejector 21 is connected to the first annular chamber 11, and the other end is provided with an inner ring fire nozzle 23. One end of the outer ring fire ejector 22 is connected to the second annular chamber 12, and the other end is provided with an outer ring fire nozzle 24.

[0093] The aperture of the inner ring fire nozzle 23 is greater than or equal to 0.8 mm and less than or equal to 0.86 mm. The aperture of the outer ring fire nozzle 24 is greater than or equal to 1.4 mm and less than or equal to 1.46 mm.

[0094] As an example, the aperture of the inner ring fire nozzle may be 0.8 mm, 0.83 mm, or 0.86 mm, etc.

[0095] The inner ring fire ejector tube 21 and the outer ring fire ejector tube 22 are used to input air into the inner ring gas mixing chamber and the outer ring gas mixing chamber respectively. The inner ring fire ejector tube 21 is responsible for mixing the primary air with the gas in the inner ring gas mixing chamber, and the outer ring fire ejector tube 22 is responsible for mixing the primary air with the gas in the outer ring gas mixing chamber.

[0096] The two ejector tubes are set separately to optimize the ratio of mixed air and gas, ensuring that each part of the flame can burn fully and reduce the emission of harmful gases such as CO caused by incomplete combustion. At the same time, the separated design is conducive to maintenance and repair. The damage of a single component will not affect the normal use of other areas. It also reduces the risk of failure and improves the overall safety performance.

[0097] The apertures of the inner ring fire nozzle 23 and the outer ring fire nozzle 24 are larger than those of the existing nozzles. Nozzles with larger apertures can introduce more gas. With sufficient gas, the gas stove 100 can provide greater firepower.

[0098] For example, Fig.10 As shown, the ejector tube assembly 20 may further include a connecting plate 25 and an air regulating plate 26, which are located on a side of the ejector tube close to the nozzle. The connecting plate 25 is connected to the ejector tube, and the air regulating plate 26 is located on a side of the connecting plate 25 close to the nozzle and is rotatably connected to the connecting plate 25. A vent is provided on the air regulating plate 26.

[0099] When the gas enters the mixing chamber 101 from the nozzle, it will drive the surrounding airflow to flow. The airflow will reduce the surrounding pressure, and the nearby air will enter the mixing chamber 101 from the vent due to the pressure and mix with the gas.

[0100] By rotating the air regulating plate 26, the size of the vent can be controlled, thereby controlling the amount of primary air entering the mixing chamber 101 as required.

[0101] For example, Fig.10 As shown, the side walls of the inner ring fire nozzle 23 and the outer ring fire nozzle 24 may be provided with side holes 201. The diameter of the side holes 201 on the inner ring nozzle may be 5 mm, and the diameter of the side holes 201 on the outer ring nozzle may be 3.5 mm.

[0102] It is understandable that the nearby air can also enter the mixing chamber 101 from the side hole 201. One more air inlet position can increase the amount of primary air entering, so that the gas in the mixing chamber 101 can be more easily mixed with the primary air, avoiding incomplete combustion of the gas.

[0103] For example, Fig.11 As shown, Fig.11 The gas stove 100 provided by the utility model may further include a bottom shell 40, a panel 50, a pot support 60 and an energy focusing ring 70. The bottom shell 40 forms an installation cavity with an opening.

[0104] The panel 50 is covered on the opening of the bottom shell 40. The panel 50 is provided with an escape hole, and the escape hole is connected to the furnace head 10 ( Figure 4 ) relative settings.

[0105] The pot support 60 is arranged on the side of the panel 50 away from the installation cavity. The distance from the side of the pot support 60 close to the panel 50 to the side of the pot support 60 away from the panel 50 is 61.5 mm. The energy focusing ring 70 is arranged on the side of the pot support 60 away from the panel 50 and connected to the pot support 60.

[0106] The stove bottom shell 40 is mainly used to place stove related components, such as the stove head 10 ( Figure 4 )、Ejector tube assembly 20( Figure 4 ) and fire cover assembly 30 ( Figure 4 ) and other components. The panel 50 can provide a user with an operable platform, which is convenient for the user to adjust the firepower and other operations.

[0107] The pot support 60 is a common tool for supporting cooking utensils, and is generally placed directly on the panel 50. The energy focusing ring 70 is placed on the pot support 60 to concentrate the energy of the flame and reduce the ineffective heat loss on the side. At the same time, the energy focusing ring 70 can also resist the influence of external airflow on the flame and keep the flame burning stably.

[0108] For example, Fig.12 As shown, Fig.12 The overall view of the pot support and the energy-gathering ring provided by the utility model shows that the total height of the pot support 60 claws is 61.5 mm. Compared with the total height of the existing pot support 60 claws, the pot support 60 is improved. Fig.11) side and the height of the side of the energy focusing ring 70 close to the panel 50 are both increased, wherein the pot support 60 is increased by 1 mm on the side of the energy focusing ring 70 away from the panel 50, and is increased by 3 mm on the side of the energy focusing ring 70 close to the panel 50.

[0109] In this way, there will be a certain gap between the cooker and the energy focusing ring 70, and the energy focusing ring 70 and the panel 50 ( Fig.11 ) There are more gaps between the two. This allows more secondary air to combine with the fuel gas through the gaps, allowing the fuel gas to burn more completely.

[0110] For example, Figure 5 As shown, some of the fire holes can be blind holes. The blind holes are located at the position where the pot support is set on the fire cover. This can prevent the pot support from being directly heated by the flame of the gas combustion. Long-term high-temperature heating can easily cause the pot support to deform, thereby failing to stably support the cooker.

[0111] By improving the aperture size of the fire hole 301, the aperture size of the nozzle and the height of the pot support 60, the performance of the gas stove 100 can be upgraded from a heat load of 4.5Kw and a heat efficiency of 67% to a heat load of 5.0Kw and a heat efficiency of 68%.

[0112] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0113] The above are only specific implementations of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A gas stove, It is characterized in that The gas stove comprises: A furnace head, wherein the furnace head forms a gas mixing cavity having an opening; an ejector tube assembly, the ejector tube assembly being in communication with the gas mixing chamber; and A fire cover assembly, the fire cover assembly is covered on the opening of the burner; a fire outlet hole is opened on the fire cover assembly, and the fire outlet hole is communicated with the gas mixing chamber; Wherein, the cross-sectional area of ​​the opening of the fire outlet hole close to one end of the gas mixing chamber is smaller than the cross-sectional area of ​​the opening of the fire outlet hole away from one end of the gas mixing chamber.

2. The gas stove according to claim 1, It is characterized in that The fire outlet comprises: a first fire hole segment, one end of which is connected to the gas mixing chamber; along the extension direction of the first fire hole segment, the cross-sectional area of ​​the first fire hole segment remains unchanged; and the cross-sectional area of ​​the first fire hole segment is perpendicular to the extension direction of the first fire hole segment; a second fire hole segment, the second fire hole segment being connected to the first fire hole segment; along the extension direction of the second fire hole segment, the cross-sectional area of ​​the second fire hole segment remains unchanged; and the cross-sectional area of ​​the second fire hole segment is perpendicular to the extension direction of the second fire hole segment; An area of ​​a cross section of the first fire hole segment along an extending direction of the first fire hole segment is smaller than an area of ​​a cross section of the second fire hole segment along an extending direction of the second fire hole segment.

3. The gas stove according to claim 1, It is characterized in that Along the extension direction of the fire outlet hole, the cross-sectional area of ​​the fire outlet hole gradually increases; the cross-sectional area of ​​the fire outlet hole is perpendicular to the extension direction of the fire outlet hole.

4. The gas stove according to claim 2, It is characterized in that The burner has: a first annular chamber; A second annular chamber; the second annular chamber is nested with the first annular chamber, and the second annular chamber is located on the outer periphery of the first annular chamber; The fire cover assembly comprises: An inner ring fire cover, wherein the inner ring fire cover is provided with the fire outlet hole; an inner ring gas mixing chamber is formed between the inner ring fire cover and the first annular chamber, and the fire outlet hole is communicated with the inner ring gas mixing chamber; An outer ring fire cover, wherein the outer ring fire cover is provided with the fire outlet hole; an outer ring gas mixing chamber is formed between the outer ring fire cover and the second annular chamber, and the fire outlet hole is communicated with the outer ring gas mixing chamber; The gas mixing chamber includes the inner ring gas mixing chamber and the outer ring gas mixing chamber.

5. The gas stove according to claim 4, It is characterized in that Along the extension direction of the fire outlet hole on the inner ring fire cover, compared with the end of the fire outlet hole far away from the inner ring gas mixing chamber, the end of the fire outlet hole close to the inner ring gas mixing chamber is close to the central axis of the first annular chamber.

6. The gas stove according to claim 4, It is characterized in that The fire outlet hole formed on the inner ring fire cover is a circular hole; The fire outlet hole formed on the outer ring fire cover is a circular hole.

7. The gas stove according to claim 5, It is characterized in that The aperture of the first fire hole section of the fire hole on the inner ring fire cover is greater than or equal to 2.0mm, and the aperture of the first fire hole section of the fire hole on the inner ring fire cover is less than or equal to 2.2mm; the aperture of the second fire hole section of the fire hole on the inner ring fire cover is greater than or equal to 2.4mm, and the aperture of the second fire hole section of the fire hole on the inner ring fire cover is less than or equal to 2.6mm.

8. The gas stove according to claim 5, It is characterized in that The aperture of the first fire hole section of the fire hole on the outer ring fire cover is greater than or equal to 1.8 mm, and the aperture of the first fire hole section of the fire hole on the outer ring fire cover is less than or equal to 2.0 mm; the aperture of the second fire hole section of the fire hole on the outer ring fire cover is greater than or equal to 2.2 mm, and the aperture of the second fire hole section of the fire hole on the outer ring fire cover is less than or equal to 2.4 mm.

9. The gas stove according to claim 4, It is characterized in that The ejector tube assembly comprises: An inner ring fire ejector pipe, one end of which is in communication with the first annular chamber, and the other end of which is provided with an inner ring fire nozzle; An outer ring fire ejector pipe, one end of which is in communication with the second annular chamber, and the other end of which is provided with an outer ring fire nozzle; The aperture of the inner ring fire nozzle is greater than or equal to 0.8 mm and less than or equal to 0.86 mm; The aperture of the outer ring fire nozzle is greater than or equal to 1.4 mm and less than or equal to 1.46 mm.

10. The gas stove according to claim 5, It is characterized in that An included angle is formed between the axis of the fire outlet hole on the inner ring fire cover and the axis of the inner ring fire cover, and the included angle ranges from 10° to 20°.

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