Efficient combustion stove and gas range

Abstract

The utility model discloses a kind of high-efficiency combustion furnace head and gas stove, including hearth, hearth is integrally formed with gas guide cavity, injection channel and first gas guide groove, gas guide cavity is equipped with gas inlet and air inlet, gas inlet and air inlet are all communicated with gas guide cavity;One end of injection channel is formed into air inlet end, the other end of injection channel is formed into air outlet end, air inlet end is communicated with gas guide cavity, air outlet end is communicated with first gas guide groove;The caliber of air inlet end gradually decreases from the end close to gas guide cavity to the end far from gas guide cavity;The caliber of air outlet end gradually increases from the end close to air inlet end to the end far from air inlet end.A kind of gas stove, including high-efficiency combustion furnace head.The utility model can be integrally formed with gas guide cavity and injection channel on hearth, simplify furnace head structure;And with gas guide cavity mixed air and gas, then with injection channel injection mixed combustible gas into first gas guide groove, so that gas is mixed fully, improve combustion efficiency.

Description

Technical Field

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

[0002] Currently, gas stoves are widely used. Their main working principle is to guide gas through a gas pipe to the burner head of the stove, where it mixes with air to form a combustible mixture, which is then ignited. The burner cap, which covers the burner head, then guides the gas to burn evenly, resulting in a uniform flame.

[0003] Existing gas-introducing burners use an external injector tube. The injector tube guides the gas to the burner head, where it mixes with air before combustion at the burner cap on the burner base. Because the injector tube is external, it increases the external size of the burner head, resulting in a larger overall burner base and requiring more installation space when mounted in a cabinet. Furthermore, since the injector tube directly guides the gas to the burner base, mixes it with air, and then directly guides it to the burner cap, the air and gas introduced through the injector tube cannot mix thoroughly before entering the burner cap for combustion. This incomplete combustion leads to the generation of harmful gases. Utility Model Content

[0004] In order to overcome at least one of the defects mentioned above in the prior art, the present invention provides a high-efficiency combustion burner and a gas stove, which can integrally form a gas guiding cavity and an injection channel on the burner base, simplifying the burner structure; and after the gas guiding cavity mixes air and gas, the injection channel then injects the mixed combustible gas into the first gas guiding groove, so that the gas is fully mixed and the combustion efficiency is improved.

[0005] The technical solution adopted by this utility model to solve its problem is:

[0006] A high-efficiency combustion burner head includes a furnace base, on which an integrally formed gas guiding cavity, an injection channel, and a first gas guiding groove are provided. The gas guiding cavity is provided with a gas inlet and an air inlet, and both the gas inlet and the air inlet are connected to the gas guiding cavity.

[0007] One end of the ejector channel is formed as an air inlet, and the other end of the ejector channel is formed as an air outlet. The air inlet is connected to the air guide cavity, and the air outlet is connected to the first air guide groove. The diameter of the air inlet gradually decreases from the end closer to the air guide cavity to the end farther away from the air guide cavity. The diameter of the air outlet gradually increases from the end closer to the air inlet to the end farther away from the air inlet.

[0008] Furthermore, the length of the air inlet is d1, the length of the air outlet is d2, the length range of d1 is 9.5mm-20mm, and the length range of d2 is 55mm-80mm.

[0009] Furthermore, the top of the air guide cavity is provided with the air inlet; the air inlet is connected to the top side of the furnace base;

[0010] The air inlet is connected to the top of the furnace base; the furnace base is provided with a first air guide baffle, which surrounds the outer periphery of the air inlet, and the side of the first air guide baffle is provided with an air guide notch, which is connected to the air inlet; the air guide notch and the gas inlet are located on the same side of the furnace base and are distributed vertically.

[0011] Furthermore, the first gas guide baffle includes a first wall segment and two second wall segments. One end of the two second wall segments is connected to the first wall segment, and the other end of the two second wall segments extends to the outer periphery of the furnace base and is spaced to form the gas guide gaps. The second wall segments are gradually inclined towards the first wall segment from the outside to the inside.

[0012] Furthermore, the air guiding chamber includes two air guiding end walls and two air guiding side walls, one of the air guiding side walls being connected to one end of the two air guiding end walls, and the other air guiding side wall being connected to the other end of the two air guiding end walls; the gas inlet is connected to one of the air guiding side walls, and the air inlet is connected to the other air guiding side wall; the air guiding end walls gradually slope from the outside to the inside.

[0013] Furthermore, the inner diameter of the air inlet is h1, and the value of h1 ranges from 9.5mm to 17.5mm; the distance between the two air guide sidewalls is D, and the value of D ranges from 18mm to 30mm.

[0014] Furthermore, the high-efficiency combustion burner head also includes a flame cover, which is detachably installed on the furnace base and, after being installed on the burner head, seals the gas guide cavity and the first gas guide groove; the bottom end of the flame cover is provided with a second gas guide baffle, which is used to abut against the first gas guide baffle.

[0015] Furthermore, the furnace base is also provided with a second gas guiding groove. The first gas guiding groove includes a middle gas guiding section and a side gas guiding section. The side gas guiding section is connected to both sides of the middle gas guiding section, and the gas outlet is connected to the middle gas guiding section. The side gas guiding section and the second gas guiding groove are both inclined upwards from the end near the gas guiding cavity to the end away from the middle gas guiding section.

[0016] Furthermore, the furnace base is provided with an annular gas mixing groove in the middle; one end of the second gas guiding groove extends through the middle gas guiding section, and the other end of the second gas guiding groove extends through the annular gas mixing groove.

[0017] A gas stove, including the aforementioned high-efficiency combustion burner head.

[0018] In summary, this utility model has the following technical effects:

[0019] During the introduction of combustible gas, the gas enters the gas guide chamber through the gas inlet and mixes with the air entering through the air inlet. The mixed combustible gas then enters the ejector channel through the inlet end and is guided to the outlet end. During this process, the ejector channel further mixes the gas and air at the large-diameter inlet end. The small diameters of the inlet and outlet ends increase the gas flow rate before the gas is discharged through the large-diameter outlet end for further mixing. This large diameter at both the inlet and outlet ends of the ejector channel facilitates secondary mixing of the gas and air. Subsequently, the outlet end of the ejector channel guides the combustible gas to the first gas guide groove, where it undergoes a third mixing. Thus, the combustible gas guided to the burner cap through the first gas guide groove is fully mixed. This thorough mixing improves combustion efficiency and reduces the production of harmful gases during combustion. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the burner head of this utility model;

[0021] Figure 2 This is a schematic diagram of the furnace base of this utility model;

[0022] Figure 3 This is a schematic diagram of the furnace base of this utility model from another perspective;

[0023] Figure 4 This is a cross-sectional view of the furnace base of this utility model;

[0024] Figure 5 This is a schematic diagram of the structure of this utility model from another perspective;

[0025] Figure 6 This is a schematic diagram of the structure of the flame cap of this utility model.

[0026] The meanings of the reference numerals in the attached drawings are as follows: 10, furnace base; 11, gas guide cavity; 111, air inlet; 112, gas guide side wall; 113, gas guide end wall; 12, gas inlet; 13, first gas guide baffle; 131, gas guide notch; 132, first wall section; 133, second wall section; 14, ejector channel; 141, gas outlet; 142, gas inlet; 15, first gas guide groove; 151, side gas guide section; 152, baffle section; 153, second positioning rib; 16, second gas guide groove; 17, annular mixing groove; 171, first positioning rib; 20, flame cap; 21, second gas guide baffle. Detailed Implementation

[0027] To better understand and implement this invention, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings.

[0028] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. 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.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0030] See Figures 1-6 This utility model discloses a high-efficiency combustion burner head, including a furnace base 10. An air guide cavity 11, an injection channel 14 and a first air guide groove 15 are integrally formed on the furnace base 10. The injection channel 14 is formed at the bottom end of the furnace base 10. The air guide cavity 11 is provided with a gas inlet 12 and an air inlet 111. Both the gas inlet 12 and the air inlet 111 are connected to the air guide cavity 11.

[0031] One end of the ejector channel 14 is formed as an air inlet 142, and the other end of the ejector channel 14 is formed as an air outlet 141. The air inlet 142 is connected to the air guide cavity 11, and the air outlet 141 is connected to the first air guide groove 15. The diameter of the air inlet 142 gradually decreases from the end closer to the air guide cavity 11 to the end farther away from the air guide cavity 11. The diameter of the air outlet 141 gradually increases from the end closer to the air inlet 142 to the end farther away from the air inlet 142.

[0032] Based on the above structure, when using the high-efficiency combustion burner head of this utility model, the burner base 10 is inserted into the installation position of the gas panel through the bottom end of the gas stove. The structure of the burner base 10 is located below the gas panel. The top cover of the burner base 10 is inserted through the gas panel and covers the burner cap 20.

[0033] During combustion, the gas pipe can be connected to the gas inlet 12, and gas is introduced into the gas inlet 12 through the gas pipe so that the gas enters the gas guide chamber 11. At the same time, after the gas enters the gas guide chamber 11, air can be introduced through the air inlet 111. In the gas guide chamber 11, the air and gas are fully mixed. Then, the gas enters the ejector channel 14 through the air inlet end 142 and exits through the air outlet end 141 to the first gas guide groove 15. The first gas guide groove 15 can eject the combustible gas to flow around the furnace base 10 and burn at the position of the flame cap 20. In this way, the flame of the flame cap 20 burns fully and stably.

[0034] Since the air inlet 142 of the guide channel gradually decreases in size from the end near the air guide cavity 11 to the end far from the air guide cavity 11, the combustible gas is introduced with a large diameter when it enters, thus increasing the amount of combustible gas introduced. After flowing through the air inlet 142, it is discharged through the small diameter of the air inlet 142 to the air outlet 141. That is, the small diameter of the air inlet 142 increases the flow rate of the combustible gas into the air outlet 141, thereby increasing the air outlet speed. Of course, after the combustible gas enters the outlet end 141, since the diameter of the outlet end 141 gradually increases from near the inlet end 142 to far away from the inlet end 142, the small diameter of the inlet end 142 increases the speed before entering the small diameter of the outlet end 141, resulting in a larger outlet gas velocity. Consequently, the combustible gas entering the first gas guiding groove 15 has a larger velocity. The combustible gas at the outlet end 141 gradually changes from a small diameter to a large diameter, thus increasing the velocity with a small orifice and then introducing it into the first gas guiding groove 15 with a large diameter. The velocity is reduced at the large diameter position of the outlet end 141 so that it can be fully mixed before entering the first gas guiding groove 15, achieving full mixing.

[0035] During the introduction of combustible gas, the gas can enter the gas guiding chamber 11 through the gas inlet 12 and mix with the air entering through the air inlet 111 for the first time in the gas guiding chamber 11. Then, the combustible gas mixed in the gas guiding chamber 11 enters the ejector channel 14 through the air inlet 142 and is guided to flow to the air outlet 141. In this way, during the process of ejecting the combustible gas, the air and gas are mixed again at the large diameter position of the air inlet 142. The small diameter of the air inlet 142 and the small diameter of the air outlet 141 increase the flow rate of the combustible gas, and then it is discharged through the large diameter of the air outlet 141 for mixing again. Thus, the large diameter of the air inlet 142 and the large diameter of the air outlet 141 of the ejector channel 14 both help the secondary mixing of gas and air.

[0036] Subsequently, the gas outlet 141 of the ejector channel 14 guides the combustible gas to the first gas guide groove 15, where it undergoes a third mixing. Thus, the combustible gas guided to the burner cap 20 through the first gas guide groove 15 is a fully mixed combustible gas. Combustion after the combustible gas is fully mixed can improve combustion efficiency and reduce the harmful gases produced during combustion.

[0037] Furthermore, the length of the intake end 142 is d1, and the length of the outlet end 141 is d2. The length range of d1 is 9.5mm-20mm, and the length range of d2 is 55mm-80mm. That is, the length of the intake position is relatively small, which reduces the amount of air mixed in. At the same time, the air can be mixed with the air at the intake position and then quickly enter the outlet end. Since the flow path at the outlet end is longer, it can be fully mixed before entering combustion, resulting in better combustion effect.

[0038] Furthermore, the inner diameter of the air intake end 142 is h1, and the length of h1 ranges from 9.5mm to 17.5mm. The inner diameter of the air intake end is 9.5mm to 17.5mm, and the length of the air intake end ranges from 9.5mm to 20mm, forming a relatively small air intake space. This allows the gas to enter from the large-diameter air guide chamber into the small air intake space, which can accelerate the gas flow speed and mixing speed.

[0039] Furthermore, the top of the gas guide chamber 11 is provided with an air inlet 111; the air inlet 111 is connected to the top side of the stove base 10. Since the gas inlet 12 of the stove base 10 is located on the side of the stove base 10, the gas pipe can be connected to the gas guide chamber 11 through the side of the stove base 10, which makes it convenient for the user to connect the pipe from the side of the gas stove.

[0040] Since gas stoves in the current technology are generally installed in cabinets, if the air inlet of the burner base 10 is set at the bottom, the bottom of the cabinet needs to have enough space and ventilation to ensure that air can enter smoothly. However, if the cabinet is well sealed or the space is narrow, it will affect the air intake effect, resulting in incomplete combustion and the production of harmful gases such as carbon monoxide.

[0041] Therefore, in this embodiment, since the air inlet 111 of the air guide chamber 11 passes through the side of the stove base 10, the air enters the air guide chamber 11 of the stove base 10 from the side of the stove base 10. This means that the amount of air supplied is less than that supplied from the bottom of the gas stove or other locations. The installation is more flexible and the requirements for the cabinet are lower. Even if the space at the bottom of the cabinet is limited or the sealing is good, air can still be supplied from the side, which reduces the impact of unreasonable cabinet design on the combustion effect to a certain extent.

[0042] In use, gas is introduced into the gas inlet 12 through the gas pipe so that the gas enters the gas guide chamber 11. At the same time, after the gas enters the gas guide chamber 11, air can be added through the air inlet 111. In the gas guide chamber 11, the air and gas are fully mixed. Then, the gas enters the ejector channel 14 through the air inlet 142 and is discharged through the air outlet 141 to the burner cap 20 for combustion. In this way, the flame of the burner cap 20 burns fully and stably.

[0043] Furthermore, in this embodiment, the air inlet 111 extends to the top of the furnace base 10. A first air guide baffle 13 is provided on the furnace base 10, and the first air guide baffle 13 surrounds the outer periphery of the air inlet 111. An air guide notch 131 is provided on the side of the first air guide baffle 13, and the air guide notch 131 communicates with the air inlet 111. Since the air inlet 111 extends to the top of the furnace base 10, the air guide cavity 11 can directly penetrate to the end face of the furnace base 10 during processing, making processing easier and reducing costs.

[0044] After the air inlet 111 of the air guide cavity 11 extends to the top of the furnace base 10, since the air needs to be introduced from the side of the furnace base 10, a first air guide baffle 13 is provided on the furnace base 10. The first air guide baffle 13 surrounds the outer periphery of the air inlet 111, and the side of the first air guide baffle 13 is provided with an air guide notch 131, which is connected to the air inlet 111.

[0045] After assembly, when the burner cap 20 is installed on the furnace base 10, the bottom end of the burner cap 20 can abut against the first gas guide baffle 13. In this way, the top of the air inlet 111 is blocked by the burner cap 20, and the gas guide gap 131 of the first gas guide baffle 13 can be filled with air into the air inlet 111, and then into the gas guide chamber 11 to mix with the gas introduced by the gas inlet 12. This ensures that the amount of air supplied enters through the gas guide gap 131, preventing the gas concentration from being too low due to excessive air supply, which could lead to unstable combustion such as flame flickering, flashing, or even extinguishing.

[0046] Specifically, in order to allow air to be introduced from the side, the burner cap 20 is sealed to the top of the furnace base 10, which can also form an introduction interval around the periphery of the air guide cavity 11. However, this situation will lead to an excessive amount of air introduced, resulting in unstable combustion. At the same time, the gas introduced by the gas inlet 12 will also leak from the air inlet 111 of the air guide cavity 11, resulting in backfire. Therefore, the first air guide baffle 13 is set to partially surround the air inlet 111 of the air guide cavity 11, and air can be supplemented from the side through a single air guide gap 131.

[0047] Of course, if the air inlet 111 is not provided with the first air guide baffle 13, the top of the air guide cavity 11 can be set as a blind end, and the air inlet 111 can be provided on the side of the top of the air guide cavity 11.

[0048] Furthermore, the gas guide gap 131 and the gas inlet 12 are located on the same side of the furnace base 10 and are distributed vertically. In this way, the gas and air are both introduced on the same side of the gas guide chamber 11, and the introduction paths are relatively consistent. This makes it convenient for the gas to be fully mixed after introduction before entering the gas inlet end 142 of the ejector channel 14, so that the combustible gas is fully mixed and burned, resulting in more complete combustion.

[0049] Furthermore, in this embodiment, the first gas guide baffle 13 includes a first wall section 132 and two second wall sections 133. One end of the two second wall sections 133 is connected to the first wall section 132, and the other end of the two second wall sections 133 extends to the outer periphery of the furnace base 10 and is spaced to form gas guide gaps 131. In this way, the first gas guide baffle 13 can form a three-directional baffle structure from one first wall section 132 and two second wall sections 133. Air can be replenished by entering through the gas guide gaps 131, thus forming a stable air inlet flow direction and reducing gas leakage.

[0050] Furthermore, the second wall section 133 is inclined towards the first wall section 132 from the outside in, so that the gap between the two second wall sections 133 gradually narrows from the outside in. When air is introduced, the air can flow through the two second wall sections 133. The air can be introduced through the large gap in the air guide, and then gradually narrows after entering, so that the narrowed air can be squeezed downwards after the air is introduced, and fully mixed with the gas. Since the gas is below the air guide chamber 11, the space between the two second wall sections 133 on the inner side is small, and the air is introduced from above. This can effectively prevent the gas from leaking out from the upper air guide gap 131.

[0051] Furthermore, the aforementioned gas guiding chamber 11 includes two gas guiding end walls 113 and two gas guiding side walls 112. One gas guiding side wall 112 is connected to one end of the two gas guiding end walls 113, and the other gas guiding side wall 112 is connected to the other end of the two gas guiding end walls 113. The gas inlet 12 is connected to one of the gas guiding side walls 112, and the gas inlet 142 is connected to the other gas guiding side wall 112. Thus, when gas is introduced into the gas inlet 12, the gas is introduced through one gas guiding side wall 112 and then guided through the two gas guiding end walls 113 to the gas inlet 142 of the other gas guiding side wall 112. Since the gas is guided by the wall surface, the gas flow rate is stable, and the gas flowing on the wall surface can be fully mixed with air before entering the gas inlet 142, thus making the gas mixing more thorough.

[0052] Similarly, the gas guide end wall 113 gradually slopes from the outside inwards. After the gas enters through the gas inlet 12, the gas flows through the two gas guide end walls 113. Since the two gas guide end walls 113 gradually slope from the outside inwards, the gas gradually narrows towards the inlet end 142 during the introduction process. At the relatively outer position of the two gas guide end walls 113, it can be fully mixed with air. After mixing, it gradually narrows and concentrates at the inlet end 142 of the ejector channel 14. The combustible gas concentrates into the ejector channel 14, reducing leakage.

[0053] Furthermore, the distance between the two air guide sidewalls 112 is D, and the value of D ranges from 18mm to 30mm. Within this range, the gas and air can be fully mixed before entering the intake end, without mixing in too much air.

[0054] Furthermore, when the inner diameter of h1 is in the range of 9.5mm-17.5mm, the inner diameter of the air guide chamber is larger than the inner diameter of the air inlet. After the air is fully mixed in the large inner diameter air guide chamber, it enters the small inner diameter air inlet, which can increase the airflow speed.

[0055] Furthermore, the high-efficiency combustion burner also includes a flame cap 20, which is detachably installed on the furnace base 10 and, after installation on the burner, covers the gas guide chamber 11 and the first gas guide groove 15. In this way, the combustion gas enters the gas guide chamber 11 through the gas inlet 12 and is guided to the gas guide chamber 11, where it mixes with the air introduced through the air inlet 111. After mixing, the gas enters the ejector channel 14 through the air inlet 142 and then through the air outlet 141 into the first gas guide groove 15. Since the flame cap 20 covers the gas guide chamber 11 and the first gas guide groove 15, the first gas guide groove 15 guides the combustible gas to the flame cap 20 for combustion. Because air and combustion gas are mixed at the gas guide chamber 11, the combustible gas entering the ejector channel 14 can be further mixed thoroughly. Thus, after entering the first gas guide groove 15, combustion is achieved by guiding the gas to the circumference of the flame cap 20, resulting in more complete combustion.

[0056] Specifically, a second gas guide baffle 21 can be provided at the bottom of the burner cap 20. The second gas guide baffle 21 is used to abut against the first gas guide baffle 13 after the burner cap 20 is sealed to the top of the furnace base 10. When the burner cap 20 is sealed to the top of the furnace base 10, the second gas guide baffle 21 protruding from the bottom of the burner cap 20 abuts against the first gas guide baffle 13 protruding from the top of the furnace base 10. In this way, the air replenishment space formed at the air inlet 111 is formed by the upper and lower second gas guide baffles 21 and the first gas guide baffle 13. The air replenishment interval formed in this way is relatively large. Compared with the air replenishment interval formed by directly surrounding the first gas guide baffle 13, the air replenishment volume is larger, so it mixes more fully with the fuel gas and the combustion is more complete.

[0057] When the gas is introduced, the gas pipeline can mix with air to form a combustible gas, which is then guided through the injection channel 14 to the middle gas guide section of the first gas guide groove 15. Since the middle gas guide section is located in the middle of the first gas guide groove 15, part of the combustible gas can flow to the side gas guide section 151 and be discharged to the outer burner cap 20, while part of it is discharged to the middle burner cap 20 through the middle second gas guide groove 16.

[0058] During the process of being directed to the burner cap 20, the combustible gas in the side guide section 151 is guided upward by the inclined wall. When the gas flows on the inclined surface, a thin gas film is formed on its surface, which is in full contact with the air. This facilitates better mixing of the gas and the air, improves the combustion efficiency of the external burner cap 20, reduces the emission of harmful gases, and makes the flame more stable.

[0059] Similarly, the combustible gas in the second gas guide groove 16 in the middle can also be guided upward through the inclined wall. When the gas flows on the inclined surface, a thin gas film will form on its surface, which will fully contact the air and facilitate better mixing of the gas and air. This can improve the combustion efficiency of the middle burner cap 20, reduce the emission of harmful gases, and make the flame more stable.

[0060] In addition, the combustible gas flows from the middle gas guide section into the side gas guide section 151 and the inclined surface of the second gas guide groove 16, which can carry out preliminary diffusion and diversion before reaching the burner cap 20, avoiding the gas from concentrating in a certain area, thereby making the flame evenly distributed on the burner cap 20 and improving the combustion efficiency.

[0061] Furthermore, the intermediate gas guide section and the side gas guide section 151 are connected by an arc surface. This allows the combustible gas in the intermediate gas guide section to enter the side gas guide section 151, where the arc surface provides a smooth transition. The relatively smooth arc surface provides gentler contact with the gas, enabling the gas to flow smoothly along its surface. Compared to transitions using sharp corners or flat surfaces, this significantly reduces airflow separation and turbulence, thereby lowering flow resistance and improving gas transmission efficiency. Reducing resistance during gas flow ensures smooth gas flow.

[0062] Furthermore, the side gas guide section 151 extends circumferentially along the furnace base 10. Thus, when the combustible gas flows within the side gas guide section 151, the combustible gas can flow upward from the slope and be evenly distributed circumferentially on the burner cap 20. In this way, the combustible gas can be evenly guided to the outer burner cap 20 to achieve uniform combustion.

[0063] Furthermore, both sides of the intermediate gas guide section are connected to side gas guide sections 151. The side gas guide sections 151 on both sides and the intermediate gas guide section extend along the circumference of the furnace base 10. In this way, the combustible gas entering the intermediate gas guide section can flow from the middle toward the side gas guide sections 151 on both sides, and be guided upwards to the outer burner cover 20 on both sides. Thus, the combustible gas entering the outer burner cover 20 is guided by both sides at the same time, and the combustible gas flow distributed throughout the entire outer burner cover 20 is uniform, without uneven distribution caused by the introduction from one side.

[0064] Furthermore, a baffle section 152 can be provided at the top of the first gas guide groove 15. The baffle section 152 surrounds the top of the first gas guide groove 15. After the outer flame cap 20 is sealed above the first gas guide groove 15, the baffle section 152 can extend upward to surround the outer flame cap 20. This can prevent the combustible gas in the first gas guide groove 15 from overflowing and reduce the backfire caused by the overflow of combustible gas.

[0065] More specifically, the second gas guide groove 16 extends to the middle end of the baffle section 152, so that the combustible gas in the middle gas guide section can flow upward and enter the second gas guide groove 16 through the middle end of the baffle section 152, increasing the flow time of the combustible gas in the middle gas guide section. The gas can be fully mixed in the middle gas guide section before entering the second gas guide groove 16, thus making the combustion more complete.

[0066] Furthermore, an annular mixing groove 17 can be provided in the middle of the furnace base 10, and one end of the second gas guiding groove 16 extends to the middle gas guiding section, while the other end of the second gas guiding groove 16 extends to the annular mixing groove 17. Based on this structure, after the combustible gas in the middle gas guiding section enters the second gas guiding groove 16, it can be further guided to the annular mixing groove 17. That is, the combustible gas can be guided to flow in an annular manner on the inner circumferential wall of the annular mixing groove, achieving thorough re-mixing and more complete combustion of the gas at the position of the middle burner cap 20.

[0067] More specifically, a number of first positioning ribs 171 can be provided on the peripheral wall of the annular mixing groove 17. When the intermediate flame cap 20 is sealed to the annular mixing groove 17, the number of first positioning ribs 171 can be inserted into the positioning post of the intermediate flame cap 20, assembled with the connecting screw of the intermediate flame cap 20, or abutted against the limiting post of the intermediate flame cap 20, thereby realizing the assembly limitation of the intermediate flame cap 20, preventing the flame cap 20 from shifting during use, and ensuring the stable assembly of the flame cap 20 structure.

[0068] Furthermore, a second positioning rib 153 may be provided on the inner peripheral wall of the first air guide groove 15. The second positioning rib 153 is located at the connection position between the middle air guide section and the side air guide section 151. Several second positioning ribs 153 may be inserted into the positioning post of the outer flame cap 20, or assembled with the connecting screw of the outer flame cap 20, or abutted against the limiting post of the outer flame cap 20, thereby realizing the assembly limitation of the outer flame cap 20, preventing the flame cap 20 from shifting during use, and ensuring the stable assembly of the flame cap 20 structure.

[0069] The second positioning rib 153 is a circular arc rib. When the combustible gas in the middle air guide section is guided to the side air guide section 151 for transition, the circular arc outer surface of the rib provides smooth guidance, reducing the instability of airflow at the corner position.

[0070] Example 2,

[0071] A gas stove includes a high-efficiency combustion burner head as described in Embodiment 1. The burner base 10 is inserted into the mounting position of the gas panel through the bottom end of the gas stove. The structure of the burner base 10 is located below the gas panel. The top cover of the burner base 10 extends through the gas panel and covers the burner cap 20.

[0072] During combustion, the gas pipe can be connected to the gas inlet 12, and gas is introduced into the gas inlet 12 through the gas pipe so that the gas enters the gas guide chamber 11. At the same time, after the gas enters the gas guide chamber 11, air can be introduced through the air inlet 111. In the gas guide chamber 11, the air and gas are fully mixed. Then, the gas enters the ejector channel 14 through the air inlet end 142 and exits through the air outlet end 141 to the first gas guide groove 15. The first gas guide groove 15 can eject the combustible gas to flow around the furnace base 10 and burn at the position of the flame cap 20. In this way, the flame of the flame cap 20 burns fully and stably.

[0073] Since the air inlet 142 of the guide channel gradually decreases in size from the end near the air guide cavity 11 to the end far from the air guide cavity 11, the combustible gas is introduced with a large diameter when it enters, thus increasing the amount of combustible gas introduced. After flowing through the air inlet 142, it is discharged through the small diameter of the air inlet 142 to the air outlet 141. That is, the small diameter of the air inlet 142 increases the flow rate of the combustible gas into the air outlet 141, thereby increasing the air outlet speed. Of course, after the combustible gas enters the outlet end 141, since the diameter of the outlet end 141 gradually increases from near the inlet end 142 to far away from the inlet end 142, the small diameter of the inlet end 142 increases the speed before entering the small diameter of the outlet end 141, resulting in a larger outlet gas velocity. Consequently, the combustible gas entering the first gas guiding groove 15 has a larger velocity. The combustible gas at the outlet end 141 gradually changes from a small diameter to a large diameter, thus increasing the velocity with a small orifice and then introducing it into the first gas guiding groove 15 with a large diameter. The velocity is reduced at the large diameter position of the outlet end 141 so that it can be fully mixed before entering the first gas guiding groove 15, achieving full mixing.

[0074] During the introduction of combustible gas, the gas can enter the gas guiding chamber 11 through the gas inlet 12 and mix with the air entering through the air inlet 111 for the first time in the gas guiding chamber 11. Then, the combustible gas mixed in the gas guiding chamber 11 enters the ejector channel 14 through the air inlet 142 and is guided to flow to the air outlet 141. In this way, during the process of ejecting the combustible gas, the air and gas are mixed again at the large diameter position of the air inlet 142. The small diameter of the air inlet 142 and the small diameter of the air outlet 141 increase the flow rate of the combustible gas, and then it is discharged through the large diameter of the air outlet 141 for mixing again. Thus, the large diameter of the air inlet 142 and the large diameter of the air outlet 141 of the ejector channel 14 both help the secondary mixing of gas and air.

[0075] Subsequently, the gas outlet 141 of the ejector channel 14 guides the combustible gas to the first gas guide groove 15, where it undergoes a third mixing. Thus, the combustible gas guided to the burner cap 20 through the first gas guide groove 15 is a fully mixed combustible gas. Combustion after the combustible gas is fully mixed can improve combustion efficiency and reduce the harmful gases produced during combustion.

[0076] Of course, it should be noted that the other structures of the high-efficiency combustion burner in this embodiment are the same as those in Embodiment 1, while the other structures of the gas stove are all existing technologies. The gas ignition structure and working principle are the same as those of existing technologies and will not be described in detail here.

[0077] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. A high efficiency combustion burner head characterized by, The furnace base includes an integrally formed gas guide cavity, an injection channel, and a first gas guide groove. The gas guide cavity is provided with a gas inlet and an air inlet, and both the gas inlet and the air inlet are connected to the gas guide cavity. One end of the ejector channel is formed as an air inlet, and the other end of the ejector channel is formed as an air outlet. The air inlet is connected to the air guide cavity, and the air outlet is connected to the first air guide groove. The diameter of the air inlet gradually decreases from the end closer to the air guide cavity to the end farther away from the air guide cavity. The diameter of the air outlet gradually increases from the end closer to the air inlet to the end farther away from the air inlet.

2. The high efficiency combustion burner head of claim 1, wherein, The length of the air inlet is d1, and the length of the air outlet is d2. The length of d1 ranges from 9.5mm to 20mm, and the length of d2 ranges from 55mm to 80mm.

3. The high efficiency combustion firepot of claim 1, wherein, The air inlet is located at the top of the air guide cavity; the air inlet is connected to the top side of the furnace base; The air inlet is connected to the top of the furnace base; the furnace base is provided with a first air guide baffle, which surrounds the outer periphery of the air inlet, and the side of the first air guide baffle is provided with an air guide notch, which is connected to the air inlet; the air guide notch and the gas inlet are located on the same side of the furnace base and are distributed vertically.

4. The high efficiency combustion burner head of claim 3, wherein, The first gas guide baffle includes a first wall section and two second wall sections. One end of the two second wall sections is connected to the first wall section, and the other end of the two second wall sections extends to the outer periphery of the furnace base and forms the gas guide gaps at intervals. The second wall sections are gradually inclined towards the first wall section from the outside to the inside.

5. The high efficiency combustion burner head of claim 3, wherein, The gas guiding chamber includes two gas guiding end walls and two gas guiding side walls, one of the gas guiding side walls is connected to one end of the two gas guiding end walls, and the other gas guiding side wall is connected to the other end of the two gas guiding end walls; the gas inlet is connected to one of the gas guiding side walls, and the gas inlet is connected to the other gas guiding side wall; the gas guiding end walls gradually slope from the outside to the inside.

6. The high efficiency combustion burner head of claim 5, wherein, The inner diameter of the air inlet is h1, and the value of h1 ranges from 9.5mm to 17.5mm; the distance between the two air guide sidewalls is D, and the value of D ranges from 18mm to 30mm.

7. A high efficiency combustion firepot as in any preceding claim, wherein, The high-efficiency combustion burner also includes a flame cover, which is detachably installed on the furnace base and, after being installed on the burner, seals the gas guide cavity and the first gas guide groove; the bottom end of the flame cover is provided with a second gas guide baffle, which is used to abut against the first gas guide baffle.

8. A high efficiency combustion burner head according to any one of claims 1 to 6, wherein, The furnace base is also provided with a second gas guiding groove. The first gas guiding groove includes a middle gas guiding section and a side gas guiding section. The side gas guiding section is connected to both sides of the middle gas guiding section. The gas outlet is connected to the middle gas guiding section. The side gas guiding section and the second gas guiding groove are both inclined upwards from the end near the gas guiding cavity to the end away from the middle gas guiding section.

9. The high efficiency combustion burner head of claim 8, wherein, The furnace base is provided with an annular gas mixing groove in the middle; one end of the second gas guiding groove extends through the middle gas guiding section, and the other end of the second gas guiding groove extends through the annular gas mixing groove.

10. A gas stove comprising a high-efficiency combustion burner head according to any one of claims 1-9.

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