Combustor and gas stove
By designing the inlet port of the ventilation pipe in the burner to project and diversion incline on the outside of the nozzle air outlet, the problem of the nozzle blockage caused by the reverse flow of liquid is solved, and the normal use of the burner is achieved.
Patent Information
- Application Number
- CN202323296423.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-04
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2033-12-04
AI Technical Summary
During the use of the burner of the existing gas stove, the overflowing water, oil and other liquids can easily flow backwards through the gap between the fire cover and the gas mixing chamber to the ventilation pipe, resulting in the nozzle being blocked and unable to be used normally.
Design a burner, the projection sleeve of the inlet outlet of the ventilation pipe on the plane where the nozzle air outlet is located is arranged on the outside of the nozzle air outlet, and the diversion inclined surface and chamfered surface are designed to prevent liquid from dripping directly on the nozzle. On the air port, liquid drips on the position outside the air outlet of the nozzle.
Effectively prevent liquid from clogging the nozzle air outlet, ensuring the normal use of the burner, and the liquid dripping outside the nozzle air outlet will not directly clog the nozzle, ensuring gas circulation.
Smart Images
Figure CN222256566U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of gas stoves, in particular to a burner and a gas stove. Background Art
[0002] The burner used in an existing gas stove is an upper air intake structure, which includes a nozzle seat, an air mixing chamber arranged above the nozzle seat, and a fire cover arranged above the air mixing chamber, wherein the nozzle seat is provided with one or more nozzles with an air outlet facing upward, the bottom of the air mixing chamber is provided with an injection port located above the nozzle, and the interior of the air mixing chamber is provided with a ventilation duct connected to the injection port. During use, the gas can be sprayed upward to the injection port through the air outlet of the nozzle, and then enter the ventilation duct through the injection port, and then flow to the fire hole of the fire cover through the ventilation duct, and finally ignited at the fire hole by the cooperation of the thermocouple and the ignition needle.
[0003] However, when using the burner, such as when cooking or cleaning, the overflowed water, oil and other liquids can easily flow back to the inner and outer surfaces of the ventilation duct through the gap between the fire cover and the air mixing chamber and the fire hole, and then flow along the inner and outer surfaces of the ventilation duct to the injection port, and then drip onto the top of the nozzle. Since the nozzle air outlet has a very small aperture, it cannot exhaust air after being blocked by liquid. Therefore, when the liquid drips onto the nozzle, it will cause the nozzle to be blocked and cannot be used normally. Utility Model Content
[0004] The utility model aims to provide a burner and a gas stove so as to alleviate the technical problem in the prior art that, during the use of the burner, overflowing liquids such as water and oil are easily reversely flowed through the gap between the fire cover and the air mixing chamber and the fire hole to the inner and outer surfaces of the ventilation duct inside the air mixing chamber, and then flow along the inner and outer surfaces of the ventilation duct to the injection port, and then drip onto the top of the nozzle, causing the nozzle to be blocked and unable to be used normally.
[0005] In a first aspect, the utility model provides a burner, comprising a gas mixing chamber and a ventilation duct;
[0006] The ventilation duct is arranged in the gas mixing chamber and one end of the ventilation duct is an ejection end, the pipe opening at the ejection end is an ejection port, and the ejection port is used to be opposite to the gas outlet position of the nozzle when the gas mixing chamber is installed above the nozzle of the burner;
[0007] The projection of the injection port on the plane where the air outlet of the nozzle is located is sleeved on the outer side of the air outlet of the nozzle.
[0008] In an optional embodiment, a chamfered surface is provided between the inner wall of the ventilation duct and the end face of the ejection end, and the chamfered surface is inclined from a side close to the interior of the ventilation duct to a side of the end face located at the ejection end, in a direction away from the central axis of the ventilation duct.
[0009] In an optional embodiment, the end face of the ejection end includes an inner edge, an outer edge, and a guide slope arranged between the inner edge and the outer edge, and the guide slope is inclined from one side close to the inner edge of the end face of the ejection end to the other side toward the direction close to the nozzle.
[0010] In an optional embodiment, the pipe body of the ventilation duct includes an inner eaves guide side and an outer eaves guide side that are relatively positioned, and the end face of the injection end is inclined toward the direction close to the nozzle from a side close to the inner eaves guide side to a side close to the outer eaves guide side.
[0011] In an optional embodiment, it further comprises a protective cover disposed above the nozzle, the protective cover is located below the injection port and the protective cover is provided with a vent hole facing the injection port;
[0012] The projection of the injection port on the plane where the vent hole is located is sleeved on the outer side of the vent hole.
[0013] In an optional embodiment, the side wall of the protective cover between its outer edge and the vent is inclined, and the inclined surface is inclined from one side of the vent to the side of the outer edge of the protective cover, inclining in a direction away from the central axis of the vent.
[0014] In an optional embodiment, there is a gap between a side of the protective cover facing the nozzle and an outer side wall of the nozzle.
[0015] In an optional embodiment, it further comprises a nozzle seat, wherein the nozzle seat is arranged below the gas mixing chamber and the nozzle is arranged on the nozzle seat;
[0016] The protective cover is connected to the nozzle seat.
[0017] In an optional embodiment, a connecting portion is provided on one side of the protective cover, and a first through hole and a second through hole are provided on the connecting portion;
[0018] A thermocouple and an ignition needle are installed on the nozzle seat, the connecting portion is attached to a side of the nozzle seat facing the gas mixing chamber, the thermocouple is inserted into the first through hole, and the ignition needle is inserted into the second through hole.
[0019] In a second aspect, the utility model provides a gas stove comprising the burner described in any one of the aforementioned embodiments.
[0020] The burner provided by the utility model includes an air mixing chamber and a ventilation duct; the ventilation duct is arranged in the air mixing chamber and one end of the ventilation duct is an ejection end, the pipe opening at the ejection end is an ejection port, and the ejection port is used to be opposite to the air outlet of the nozzle when the air mixing chamber is installed above the nozzle of the burner; the projection of the ejection port on the plane where the air outlet of the nozzle is located is sleeved on the outside of the air outlet of the nozzle. The burner provided by the utility model may also include a fire cover with a fire hole, in which case the fire cover is installed above the air mixing chamber, the air mixing chamber is placed above the nozzle, and the ejection end of the ventilation duct is located above the nozzle, and the other end of the ventilation duct is located above the ejection end. During the use of the burner, if external liquids such as water and oil flow through the gap between the fire cover and the mixing chamber and through the fire holes to the inner and outer surfaces of the ventilation duct, the ventilation duct will guide the liquid to the injection port. Since in the burner provided by the utility model, the projection of the injection port on the plane where the air outlet of the nozzle is located is sleeved on the outside of the air outlet of the nozzle, the edge cover of the injection port is arranged outside the air outlet of the nozzle. At this time, the air outlet of the nozzle is within the coverage range of the injection port. After the liquid guided to the injection port drips down, it will only drip at a position outside the air outlet of the nozzle, and will not drip directly on the air outlet to cause clogging of the nozzle, thereby effectively ensuring the normal use of the nozzle. It should be noted that since the gap and fire holes between the fire cover and the air mixing chamber are usually not directly above the ventilation duct, when the liquid flows from the gap and fire holes between the fire cover and the air mixing chamber to the ventilation duct, it cannot flow directly downward into the ventilation duct, but needs to turn and flow along the inner and outer walls of the air mixing chamber to the ventilation duct. Therefore, the flow rate of the liquid flowing into the ventilation duct is small, and a water column flushing downward cannot be formed. At this time, the liquid can only flow along the inner and outer surfaces of the ventilation duct to the injection port, and will not directly flush downward through the hollow part of the ventilation duct to directly above the air outlet of the nozzle. Based on this, it is only necessary to make the projection of the injection port on the plane where the air outlet of the nozzle is located be arranged on the outside of the air outlet of the nozzle to prevent the liquid in the ventilation duct from dripping onto the nozzle.
[0021] Compared with the prior art, the burner provided by the utility model enables the projection of the injection port on the plane where the nozzle air outlet is located to be sleeved on the outside of the nozzle air outlet, so that the edge cover of the injection port can be arranged outside the nozzle air outlet. When the liquid enters the ventilation duct and flows to the injection port through the inner and outer surfaces of the ventilation duct, the liquid will only drip at the position outside the nozzle air outlet without touching the air outlet, and will not cause the nozzle to be blocked.
[0022] The gas stove provided by the utility model comprises the above-mentioned burner, so the gas stove provided by the utility model has the same beneficial effects as the above-mentioned burner. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0024] Figure 1 An exploded diagram of a burner provided in an embodiment of the utility model;
[0025] Figure 2 A cross-sectional view of a burner provided in an embodiment of the utility model;
[0026] Figure 3 A schematic diagram of the structure of the gas mixing chamber and the injection port provided in the embodiment of the utility model;
[0027] Figure 4 A cross-sectional view of a gas mixing chamber provided in an embodiment of the utility model;
[0028] Figure 5 A bottom view of the protective cover provided in the embodiment of the utility model;
[0029] Figure 6 A schematic diagram of the structure of the protective cover provided in the embodiment of the utility model;
[0030] Figure 7 A cross-sectional view of a protective cover provided in an embodiment of the utility model.
[0031] Icons: 1-mixing chamber; 10-ventilation duct; 100-injection port; 101-chamfered slope; 102-flow guide slope; 103-inner eaves flow guide side; 104-outer eaves flow guide side; 2-nozzle; 3-fire cover; 4-protective cover; 40-ventilation hole; 41-connecting part; 410-first through hole; 411-second through hole; 5-nozzle seat; 50-thermocouple; 51-ignition needle. DETAILED DESCRIPTION
[0032] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.
[0033] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0034] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.
[0035] Example:
[0036] like Figure 1-Figure 4 As shown, the burner provided in this embodiment includes an air mixing chamber 1 and an air duct 10; the air duct 10 is arranged in the air mixing chamber 1 and one end of the air duct 10 is an injection end, and the pipe opening at the injection end is an injection port 100, and the injection port 100 is used to be opposite to the air outlet position of the nozzle 2 when the air mixing chamber 1 is installed above the nozzle 2 of the burner; the projection of the injection port 100 on the plane where the air outlet of the nozzle 2 is located is arranged on the outside of the air outlet of the nozzle 2.
[0037] like Figure 1 and Figure 2 As shown, the burner provided in this embodiment may also include a fire cover 3 provided with a fire hole. In this case, the fire cover 3 is installed above the mixing chamber 1, and the mixing chamber 1 is placed above the nozzle 2. The introduction end of the ventilation pipe 10 is located above the nozzle 2, and the other end of the ventilation pipe 10 is located above the introduction end.
[0038] in, Figure 2 The direction indicated by the hollow arrow in the figure is the direction of gas flow, and the direction of the solid arrow is the direction of flow of external liquid when it enters the ventilation pipe 10. Figure 2 As shown, the gas can be sprayed upward to the injection port 100 through the gas outlet of the nozzle 2, then enter the ventilation pipe 10 through the injection port 100, and then flow to the fire hole of the fire cover 3 through the ventilation pipe 10, and finally ignited at the fire hole by the cooperation of the thermocouple 50 and the ignition needle 51.
[0039] If the external water, oil and other liquids flow along Figure 2In the direction indicated by the solid arrow in the figure, the liquid flows through the gap between the fire cover 3 and the mixing chamber 1 and through the fire holes to the inner and outer surfaces of the ventilation duct 10, and the ventilation duct 10 will guide the liquid to the injection port 100. Since in the burner provided in this embodiment, the projection of the injection port 100 on the plane where the air outlet of the nozzle 2 is located is sleeved on the outside of the air outlet of the nozzle 2, the edge cover of the injection port 100 is arranged outside the air outlet of the nozzle 2. At this time, the air outlet of the nozzle 2 is within the coverage of the injection port 100. After the liquid guided to the injection port 100 drips downward, it will only drip at a position outside the air outlet of the nozzle 2, and will not directly drip on the air outlet to cause clogging of the nozzle 2, thereby effectively ensuring the normal use of the nozzle 2.
[0040] It should be noted that the burner is in a high temperature environment during the cooking process, so the liquid dripping outside the nozzle 2 will eventually evaporate gradually as the burner is used, and will not stay around the nozzle 2 for a long time.
[0041] It should also be noted that since the gap and fire hole between the fire cover 3 and the mixing chamber 1 are usually not directly above the ventilation duct 10, when the liquid flows from the gap and fire hole between the fire cover 3 and the mixing chamber 1 to the ventilation duct 10, it cannot directly flow downward into the ventilation duct 10, but needs to turn and flow along the inner and outer walls of the mixing chamber 1 to the ventilation duct 10. Therefore, the flow rate of the liquid flowing into the ventilation duct 10 is small, and a water column that flushes downward cannot be formed. At this time, the liquid can only flow along the inner and outer surfaces of the ventilation duct 10 to the injection port 100, and will not directly flush downward through the hollow part of the ventilation duct 10 to directly above the air outlet of the nozzle 2. Based on this, it is only necessary to make the projection of the injection port 100 on the plane where the air outlet of the nozzle 2 is located be arranged on the outside of the air outlet of the nozzle 2 to prevent the liquid in the ventilation duct 10 from dripping onto the nozzle 2.
[0042] Compared with the prior art, the burner provided in this embodiment enables the edge cover of the injection port 100 to be arranged outside the air outlet of the nozzle 2 by making the projection of the injection port 100 on the plane where the air outlet of the nozzle 2 is located be arranged on the outside of the air outlet of the nozzle 2. When the liquid enters the ventilation pipe 10 and flows to the injection port 100 through the inner and outer surfaces of the ventilation pipe 10, the liquid will only drip on the position outside the air outlet of the nozzle 2 without touching the air outlet, and will not cause the nozzle 2 to be blocked.
[0043] In addition, in this embodiment, the end face of the ejection end includes an inner edge and an outer edge. To effectively prevent liquid from dripping onto the nozzle 2, the projection of the inner edge of the end face of the ejection end on the plane where the gas outlet of the nozzle 2 is located needs to be located outside the gas outlet of the nozzle 2. Specifically, when the end face of the ejection end is annular and the nozzle 2 is cylindrical, the inner diameter of the ejection end needs to be greater than the maximum outer diameter of the nozzle 2.
[0044] like Figure 2 , Figure 3 and Figure 4 As shown, a chamfered surface 101 is provided between the inner wall of the ventilation duct 10 and the end face of the ejection end, and the chamfered surface 101 is inclined from the side close to the inside of the ventilation duct 10 to the side of the end face located at the ejection end, in a direction away from the central axis of the ventilation duct 10.
[0045] Since the chamfered surface 101 extends from the side close to the inside of the ventilation duct 10 to the side of the end face at the injection end, the chamfered surface 101 can enlarge the aperture of the injection port 100 on the end face of the injection end, making it more difficult for the liquid flowing to the injection port 100 to drip onto the nozzle 2.
[0046] In addition, the chamfered surface 101 can also guide the flow of liquid from the inner wall of the ventilation duct 10 to the injection port 100, so that the droplets attached to the inner wall of the ventilation duct 10 are easier to flow to the injection port 100 with an enlarged diameter, thereby making the liquid farther away from the nozzle 2 after dripping.
[0047] Since the chamfered surface 101 can make it easier for the droplets on the inner wall of the ventilation duct 10 to flow to the injection port 100 instead of directly dripping down above the air outlet of the nozzle 2, the projection of the side of the chamfered surface 101 close to the inside of the ventilation duct 10 on the plane where the air outlet of the nozzle 2 is located can be only arranged on the outside of the air outlet of the nozzle 2, and does not have to be arranged on the outside of the outer edge of the nozzle 2.
[0048] However, in order to further prevent the liquid from dripping onto the air outlet of the nozzle 2, the aperture of the injection port 100 can be enlarged so that the liquid cannot drip directly onto the outer surface of the nozzle 2. Correspondingly, in this embodiment, the projection of the chamfered surface 101 on one side of the end face of the injection end (that is, the injection port 100) on the plane where the air outlet of the nozzle 2 is located is preferably arranged outside the outer edge of the nozzle 2.
[0049] When the cross section of the ventilation duct 10 is annular and the nozzle 2 is cylindrical, the maximum diameter of the ventilation duct 10 at the chamfered surface 101 (i.e., the diameter of the injection port 100) is greater than the maximum outer diameter of the nozzle 2. For example, if the outer diameter of the nozzle 2 is 8 mm, the maximum diameter of the ventilation duct 10 at the chamfered surface 101 needs to be greater than 8 mm.
[0050] like Figure 4 As shown, the end face of the ejection end includes an inner edge, an outer edge and a guide slope 102 arranged between the inner edge and the outer edge. The guide slope 102 is inclined from one side close to the inner edge of the end face of the ejection end to the other side toward the direction close to the nozzle 2.
[0051] When a chamfered surface 101 is provided between the end surface of the ejection end and the inner wall of the ventilation duct 10 , the flow guiding surface 102 may be provided between one side of the chamfered surface 101 located at the end surface of the ejection end and the outer edge of the end surface of the ejection end.
[0052] If the end face of the ejection end is located in a horizontal plane, after the liquid flows to the ejection port 100, the liquid will be uniformly adsorbed on the end face of the ejection end under the action of liquid tension, and then drip randomly, resulting in high uncertainty in the dripping position.
[0053] Based on this, the present embodiment preferably sets a flow guiding slope 102 between the inner edge and the outer edge of the end face of the ejection end. Since the flow guiding slope 102 is inclined from one side close to the inner edge of the end face of the ejection end to the other side toward the direction close to the nozzle 2, when the liquid flows to the end face of the ejection end, the liquid can flow from the highest point of the flow guiding slope 102 to the lowest point of the flow guiding slope 102 under the action of gravity, and then concentrate on dripping from the lowest point of the flow guiding slope 102 (that is, the side of the flow guiding slope 102 close to the outer edge of the ejection end). When the liquid concentrates on dripping from the lowest point of the flow guiding slope 102, the dripping position of the liquid can be made as far away from the nozzle 2 as possible, thereby effectively preventing the liquid from dripping onto the nozzle 2.
[0054] It should be noted that when the end face of the ejection end is annular and the nozzle 2 is cylindrical, the diameter of the lowest point of the guide slope 102 (that is, the side of the guide slope 102 close to the outer edge of the ejection end) needs to be larger than the maximum outer diameter of the nozzle 2. In this embodiment, the diameter of the lowest point of the guide slope 102 is preferably at least 2 mm larger than the maximum outer diameter of the nozzle 2. For example, when the outer diameter of the nozzle 2 is 8 mm, the diameter of the lowest point of the guide slope 102 is not less than 10 mm.
[0055] Further, such as Figure 2 and Figure 4 As shown, the pipe body of the ventilation duct 10 includes an inner eaves guide side 103 and an outer eaves guide side 104 which are relatively positioned, and the end face of the injection end is inclined from a side close to the inner eaves guide side 103 to a side close to the outer eaves guide side 104, toward a direction close to the nozzle 2.
[0056] In actual application, the liquid entering the ventilation pipe 10 through the fire hole of the fire cover 3 will flow downward along the inner surface of the ventilation pipe 10, and the liquid entering the ventilation pipe 10 through the gap between the fire cover 3 and the gas mixing chamber 1 will flow downward along the outer surface of the ventilation pipe 10. When the liquid flows downward along the outer surface of the ventilation pipe 10, Figure 2 As shown, liquid flows not only on the outer surface of the inner eaves guide side 103 of the ventilation duct 10 , but also on the outer surface of the outer eaves guide side 104 of the ventilation duct 10 , which causes liquid to drip all around the ventilation duct 10 .
[0057] Based on this, the end face of the ejector end in this embodiment is preferably inclined from the side close to the inner eaves guide side 103 to the side close to the outer eaves guide side 104 toward the direction close to the nozzle 2. When liquid flows on the outer surfaces of the inner eaves guide side 103 and the outer eaves guide side 104 of the ventilation duct 10, the liquid on the outer surface of the inner eaves guide side 103 will automatically flow to the outer eaves guide side 104 along the inclined end face of the ejector end under the action of gravity, thereby merging with the liquid on the outer eaves guide side 104 and dripping downwards.
[0058] It can be seen that the end face of the ejection end is inclined from the side close to the inner eaves guide side 103 to the side close to the outer eaves guide side 104 toward the direction close to the nozzle 2, which can make the liquid dripping position more orderly and concentrated.
[0059] like Figure 1-Figure 2 , Figure 5-Figure 7 As shown, the burner provided in this embodiment also includes a protective cover 4 arranged above the nozzle 2, the protective cover 4 is located below the injection port 100 and is provided with an air vent 40 facing the injection port 100; the projection of the injection port 100 on the plane where the air vent 40 is located is arranged on the outside of the air vent 40.
[0060] When cleaning the gas stove, the user will occasionally pick up the burner and other components for cleaning. However, when wiping the burner with a rag, the air outlet of the nozzle 2 is easily blocked by liquids such as oil and water on the rag, and it is difficult for the user to find the blockage of the nozzle 2, resulting in the next use of the burner. The gas cannot be sprayed from the air outlet of the nozzle 2, making the burner unable to emit gas and unable to burn normally, resulting in flameout.
[0061] The burner provided in this embodiment shields the nozzle 2 through the protective cover 4, which can effectively prevent the rag from contacting the nozzle 2, thereby effectively preventing the air outlet of the nozzle 2 from being blocked.
[0062] It should be noted that in order to prevent the vent hole 40 of the protective cover 4 from being blocked due to the rag coming into contact with it during cleaning, in this embodiment, the aperture of the vent hole 40 is preferably larger than the aperture of the air outlet of the nozzle 2. At this time, even if the rag comes into contact with the vent hole 40 of the protective cover 4, it will be difficult to completely block the vent hole 40 due to the larger aperture of the vent hole 40.
[0063] It should also be noted that, since the vent hole 40 on the protective cover 4 and the injection port 100 face each other, and the injection port 100 is opposite to the gas outlet of the nozzle 2, the gas outlet of the nozzle 2, the vent hole 40 on the protective cover 4 and the injection port 100 are sequentially located on the same straight line and are correspondingly connected. Therefore, the vent hole 40 on the protective cover 4 can ensure that the gas at the gas outlet of the nozzle 2 can be normally sprayed to the injection port 100, thereby preventing the protective cover 4 from obstructing the gas flow process.
[0064] In addition, since the projection of the injection port 100 on the plane where the vent 40 is located is arranged outside the vent 40, the liquid will fall on the protective cover 4 after dripping from the injection port 100, and will not pass through the vent 40 and drip on the nozzle 2.
[0065] like Figure 2 , Figure 6 and Figure 7 As shown, the side wall of the protective cover 4 between its outer edge and the vent 40 is inclined, and the inclined surface is inclined from the side of the vent 40 to the side of the outer edge of the protective cover 4, away from the central axis of the vent 40.
[0066] Since the inclined side wall of the protective cover 4 is inclined from the side located at the vent hole 40 to the side located at the outer edge of the protective cover 4 in a direction away from the central axis of the vent hole 40, after the liquid drips from the injection port 100 onto the protective cover 4, the liquid will automatically flow along the inclined surface of the protective cover 4 to the outer edge of the protective cover 4 under the action of its own weight, and then drip downward from the outer edge of the protective cover 4. Since the protective cover 4 is arranged above the nozzle 2, the nozzle 2 as a whole will be within the coverage of the protective cover 4. At this time, the outer edge of the protective cover 4 is located outside the outer edge of the nozzle 2. When the liquid drips downward from the outer edge of the protective cover 4, the liquid will drip to a position away from the nozzle 2, which can further effectively prevent the liquid from contacting the outer surface of the nozzle 2.
[0067] It can be seen that when the side wall of the protective cover 4 is inclined, the protective cover 4 can play a guiding role, so that the liquid is concentrated and drips downward from the outer edge of the protective cover 4 and away from the nozzle 2.
[0068] In this embodiment, the vent hole 40 and the injection port 100 on the protective cover 4 can be circular. For example, the diameter of the vent hole 40 of the protective cover 4 is 5 mm and the diameter of the injection port 100 is 8 mm. When the liquid at the injection port 100 drips downward, the liquid will only drip on the 8 mm diameter of the protective cover 4, and will not enter the range of the vent hole 40 with a diameter of 5 mm. Even if some droplets reach the edge of the vent hole 40 by sputtering and flow from the inside of the vent hole 40 to the side of the protective cover 4 facing the nozzle 2, since the side wall of the protective cover 4 is an inclined surface, these droplets will also flow to the outer edge of the protective cover 4 under the guidance of the side wall of the protective cover 4, and will not cross and interfere with the upper surface of the nozzle 2.
[0069] Furthermore, there is a gap between the side of the protective cover 4 facing the nozzle 2 and the outer side wall of the nozzle 2 .
[0070] When there is a gap between the side of the protective cover 4 facing the nozzle 2 and the outer wall of the nozzle 2, it can prevent the droplets flowing to the side of the protective cover 4 facing the nozzle 2 from flowing more easily along the side wall of the protective cover 4 to the outer edge of the protective cover 4 instead of directly hanging on the upper surface of the nozzle 2.
[0071] Specifically, in order to effectively prevent the droplets from hanging on the upper surface of the nozzle 2, in this embodiment, it is preferred that the spacing between the side of the protective cover 4 facing the nozzle 2 and the outer side wall of the nozzle 2 is not less than 3 mm.
[0072] like Figure 1 As shown, the burner provided in this embodiment further includes a nozzle seat 5 , which is arranged below the gas mixing chamber 1 and on which a nozzle 2 is arranged; and a protective cover 4 is connected to the nozzle seat 5 .
[0073] The nozzle seat 5 can not only support the nozzle 2 and provide a mounting position for the nozzle 2 , but also support the protective cover 4 so that the protective cover 4 can be stably placed above the nozzle 2 .
[0074] It should be noted that the installation position of the protective cover 4 is not limited to the nozzle seat 5 . When the space on the nozzle seat 5 is limited, the protective cover 4 can also be connected to the gas mixing chamber 1 .
[0075] In this embodiment, if Figure 5-Figure 7 As shown, a connecting portion 41 is provided on one side of the protective cover 4, and a first through hole 410 and a second through hole 411 are provided on the connecting portion 41; Figure 1 and Figure 2 As shown, a thermocouple 50 and an ignition needle 51 are installed on the nozzle holder 5 , the connecting portion 41 is attached to the side of the nozzle holder 5 facing the gas mixing chamber 1 , and the thermocouple 50 is inserted into the first through hole 410 , and the ignition needle 51 is inserted into the second through hole 411 .
[0076] The connecting portion 41 is used to achieve a fixed connection between the protective cover 4 and the nozzle seat 5. In practical applications, the connecting portion 41 can be fixedly connected to the nozzle seat 5 by welding, bonding, threaded connection or screw connection. Furthermore, the connecting portion 41 can also be directly connected to the thermocouple 50 on the nozzle seat 5 by fasteners such as screws.
[0077] In order to facilitate the removal and cleaning of the protective cover 4, the present embodiment preferably has a detachable connection between the connection part 41 and the nozzle seat 5. Furthermore, the present embodiment preferably has the connection part 41 attached to the side of the nozzle seat 5 facing the gas mixing chamber 1, and the thermocouple 50 on the nozzle seat 5 is inserted into the first through hole 410, and the ignition needle 51 is inserted into the second through hole 411. At this time, the nozzle seat 5 can form a stable support for the connection part 41, thereby forming a stable support for the protective cover 4, so that the protective cover 4 can be stably located above the nozzle 2; and the thermocouple 50 and the ignition needle 51 can cooperate with each other to limit the connection part 41, thereby limiting the protective cover 4, and effectively preventing the protective cover 4 from rotating freely on the nozzle seat 5.
[0078] It can be seen that, under the support of the nozzle seat 5, combined with the limiting effect of the thermocouple 50 and the ignition needle 51, the protective cover 4 can be stably located above the nozzle 2. Compared with the screw connection method, the protective cover 4 can be stably installed only through the first through hole 410 and the second through hole 411, which can not only effectively improve the convenience of installation and removal of the protective cover 4, but also reduce the use of parts and effectively save material costs.
[0079] When there is a gap between the side of the protective cover 4 facing the nozzle 2 and the outer side wall of the nozzle 2, in order to form the gap, the side wall of the protective cover 4 can be inclined, and the connecting part 41 is connected to the outer edge of the protective cover 4. At this time, the connecting part 41 is located at the lowest point of the protective cover 4. When the connecting part 41 is attached to the side of the nozzle holder 5 facing the mixing chamber 1, the connecting part 41 can support the protective cover 4, so that there is a gap between the protective cover 4 with an inclined side wall and the nozzle 2.
[0080] This embodiment also provides a gas stove, which includes the above-mentioned burner. Therefore, the gas stove provided in this embodiment and the above-mentioned burner can solve the same technical problems and achieve the same technical effects, which will not be described in detail here.
[0081] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.
Claims
1. A burner, characterized in that: It comprises a gas mixing chamber (1) and a ventilation duct (10); The ventilation duct (10) is arranged in the gas mixing chamber (1), and one end of the ventilation duct (10) is an ejection end, and the pipe opening at the ejection end is an ejection port (100). The ejection port (100) is used to be opposite to the gas outlet position of the nozzle (2) when the gas mixing chamber (1) is installed above the nozzle (2) of the burner; The projection of the injection port (100) on the plane where the air outlet of the nozzle (2) is located is sleeved on the outside of the air outlet of the nozzle (2).
2. The burner according to claim 1, characterized in that A chamfered slope (101) is provided between the inner wall of the ventilation duct (10) and the end face of the ejection end, and the chamfered slope (101) is inclined from a side close to the interior of the ventilation duct (10) to a side located at the end face of the ejection end, in a direction away from the central axis of the ventilation duct (10).
3. The burner according to claim 1, characterized in that The end face of the ejection end comprises an inner edge, an outer edge and a flow guiding inclined surface (102) arranged between the inner edge and the outer edge, and the flow guiding inclined surface (102) is inclined from one side close to the inner edge of the end face of the ejection end to the other side in a direction close to the nozzle (2).
4. The burner according to claim 1, characterized in that The pipe body of the ventilation duct (10) comprises an inner eaves flow guiding side (103) and an outer eaves flow guiding side (104) which are located opposite to each other, and the end face of the ejection end is inclined from a side close to the inner eaves flow guiding side (103) to a side close to the outer eaves flow guiding side (104), and is inclined towards a direction close to the nozzle (2).
5. The burner according to any one of claims 1 to 4, characterized in that: It also comprises a protective cover (4) disposed above the nozzle (2), the protective cover (4) being located below the injection port (100) and having an air vent (40) facing the injection port (100); The projection of the injection port (100) on the plane where the vent hole (40) is located is sleeved on the outside of the vent hole (40).
6. The burner according to claim 5, characterized in that The side wall of the protective cover (4) between its outer edge and the vent (40) is in the form of an inclined surface, and the inclined surface is inclined from one side of the vent (40) to one side of the outer edge of the protective cover (4), in a direction away from the central axis of the vent (40).
7. The burner according to claim 6, characterized in that There is a gap between the side of the protective cover (4) facing the nozzle (2) and the outer side wall of the nozzle (2).
8. The burner according to claim 5, characterized in that It also comprises a nozzle seat (5), wherein the nozzle seat (5) is arranged below the gas mixing chamber (1) and the nozzle (2) is arranged on the nozzle seat (5); The protective cover (4) is connected to the nozzle seat (5).
9. The burner according to claim 8, characterized in that A connecting portion (41) is provided on one side of the protective cover (4), and a first through hole (410) and a second through hole (411) are provided on the connecting portion (41); A thermocouple (50) and an ignition needle (51) are mounted on the nozzle seat (5); the connecting portion (41) is attached to a side of the nozzle seat (5) facing the gas mixing chamber (1); the thermocouple (50) is inserted into the first through hole (410); and the ignition needle (51) is inserted into the second through hole (411).
10. A gas stove, characterized in that: A burner comprising the burner according to any one of claims 1 to 8.