Gas furnace and combined heating appliance

Abstract

The utility model relates to the technical field of gas devices, in particular to a gas furnace and a combined heating appliance. The gas furnace comprises a shell, an ignition assembly, a spray head, a mixing pipe and a furnace end, the spray head and the mixing pipe are arranged in the shell, the furnace end is located above the shell, the ignition assembly comprises an ignition head arranged at the furnace end and an ignition switch arranged on the shell, the ignition head is electrically connected with the ignition switch, and the spray head is connected with a gas pipe and used for being connected with a gas tank through the gas pipe. The furnace end comprises a lower spraying disc, an inner spraying net and an upper spraying disc which are arranged in a stacked mode, the lower spraying disc is connected with the mixing pipe, a gap is formed between the inner spraying net and the lower spraying disc, a plurality of via holes are evenly formed in the inner spraying net, a plurality of strip-shaped holes are formed in the upper spraying disc in the circumferential direction of the upper spraying disc in an array mode, and the extending direction of the strip-shaped holes faces the radial direction of the upper spraying disc. By the adoption of the mode, the combustion efficiency can be improved, and the risk of gas backdraft is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of gas devices, in particular to a gas stove and a combined heating appliance. Background Art

[0002] With the rapid development of social economy, more and more people like to go camping outdoors, and among them, gas stoves have become one of the indispensable equipment.

[0003] In the use of the existing gas stove, the mixed gas directly rises and rushes to the flat stove plate, so the center of the flat stove plate gets more mixed gas, while other parts get less mixed gas, and because the mixed gas rushes out directly, some of the gas will inevitably not be fully burned. The above reasons cause the gas stove of the prior art to burn very unevenly, with low combustion efficiency, and also have the safety hazard of gas backdraft. Utility Model Content

[0004] The technical problem to be solved by the embodiments of the utility model is to provide a gas stove and a combined heating device, which can improve the combustion efficiency and reduce the risk of gas backdraft.

[0005] The utility model discloses a gas stove, comprising: a shell, an ignition assembly, a nozzle and a mixing tube arranged in the shell, and a burner head located above the shell, the ignition assembly comprising an ignition head arranged at the burner head, and an ignition switch arranged on the shell, the ignition head is electrically connected to the ignition switch, an air pipe is connected to the nozzle for connecting to a gas tank through the air pipe, the burner head comprises a stacked lower spray plate, an inner spray net and an upper spray plate, the lower spray plate is connected to the mixing tube, and a gap is provided between the inner spray net and the lower spray plate, a plurality of through holes are evenly distributed on the inner spray net, a plurality of strip holes are arranged in an array along the circumferential direction of the upper spray plate on the upper spray plate, and the extension direction of the strip holes is arranged toward the radial direction of the upper spray plate.

[0006] Optionally, the ignition switch includes an ignition bracket connected to the shell, and an ignition paddle rotatably connected to the ignition bracket, an ignition bracket is provided with a ignition lighter, and the pressing end of the ignition lighter is arranged corresponding to the ignition paddle, wherein the ignition lighter is electrically connected to the ignition head.

[0007] Optionally, the ignition bracket includes a first connecting part, an extension part and a second connecting part connected in sequence, the ignition bracket is connected to the shell through the first connecting part, the ignition paddle is connected to the ignition bracket through the second connecting part, and a through hole is also provided on the ignition bracket to allow the air pipe to extend through the ignition bracket.

[0008] Optionally, the nozzle includes a seat body and a nozzle connected to each other, the first connecting portion extends into the shell, and the nozzle passes through the first connecting portion and extends into the mixing tube to communicate with the mixing tube, and the nozzle is connected to the air pipe through the seat body.

[0009] Optionally, a plurality of through holes are arranged in a circular array on the mixing tube, the shell includes a side wall connected to the ignition switch, and a top cover connected to the side wall, one end of the mixing tube passes through the top cover, a plurality of ventilation holes are arranged in a circular array on the top cover, and the ventilation holes are connected to the through holes.

[0010] Optionally, the ventilation holes are in the shape of long strips, the extension direction of the ventilation holes is arranged toward the radial direction of the top cover, and the ventilation holes are arranged in a staggered manner of long and short.

[0011] Optionally, the centers of the upper spray plate and the inner spray net are concave toward one side of the lower spray plate, and the shape of the through hole is one of a circular hole, an elliptical hole, a diamond hole, a regular triangle hole and a regular hexagonal hole.

[0012] Optionally, the strip-shaped holes are arranged in a staggered manner with long and short lengths, and the outer circles of the strip-shaped holes are located on the same circumference.

[0013] The utility model also discloses a combined heating device, comprising a support frame, a heating vessel, a gas tank, and a gas furnace as described in any one of the above, wherein the heating vessel is mounted on the support frame, the gas furnace is connected to the gas tank through an air pipe, and the gas furnace is arranged in the support frame.

[0014] Optionally, the gas tank includes a tank body and a switch valve arranged on the tank body, and the gas pipe is connected to the tank body through the switch valve.

[0015] Compared with the prior art, the beneficial effects of the gas stove and combined heating device provided by the embodiment of the utility model are: by setting the burner head in a structure of a stacked lower spray plate, an inner spray net and an upper spray plate, the gas flows to the nozzle through the gas pipe, sprays into the mixing tube and mixes with the air, and then flows to the burner head. In the process, the mixed gas can be dispersed to the area through the gap between the inner spray net and the lower spray plate. In the process of flowing through the inner spray net, a plurality of holes are evenly arranged on the inner spray net, so that the mixed gas can be further dispersed, so that the mixed gas is distributed more evenly, avoiding excessive airflow near the mixing tube, which affects the full combustion of the gas. At the same time, by arranging a plurality of strip holes in an array along the circumferential direction of the upper spray plate on the upper spray plate, and the extension direction of the strip holes is arranged toward the radial direction of the upper spray plate, it is beneficial to optimize the mixing ratio of gas and air and further improve the combustion efficiency of the gas. After the gas supply is disconnected, the flame on the burner will gradually shrink and move downward. When it moves to the position of the inner spray net, the gradually shrinking flame will be divided due to the influence of a plurality of through holes evenly distributed on the inner spray net. In the absence of gas supply, the flame can be extinguished quickly, reducing the risk of gas backdraft. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The technical solution of the utility model will be further described in detail below with reference to the accompanying drawings and embodiments, in which:

[0017] Figure 1 It is a structural schematic diagram of a gas furnace provided by an embodiment of the utility model;

[0018] Figure 2 is a cross-sectional view of a gas furnace provided by an embodiment of the utility model;

[0019] Figure 3 It is a schematic diagram of a gas furnace explosion provided by an embodiment of the utility model;

[0020] Figure 4 yes Figure 3 A partial enlarged view of the middle A;

[0021] Figure 5 It is a structural schematic diagram of a combined heating device provided by an embodiment of the utility model.

[0022] The reference numerals in the figures are:

[0023] 100, gas stove; 110, shell; 112, side wall; 114, top cover; 1142, vent hole; 120, ignition assembly; 122, ignition head; 124, ignition switch; 1242, ignition bracket; 1242a, first connecting part; 1242b, extension part; 1242c, second connecting part; 1242d, through hole; 1244, ignition pick; 1246, ignition device ; 130, nozzle; 132, seat; 134, nozzle; 140, mixing tube; 142, through hole; 150, burner; 152, lower spray plate; 154, inner spray net; 156, upper spray plate; 1562, strip hole; 160, air pipe; 170, gas tank; 172, tank body; 174, switch valve; 200, combined heating device; 210, support frame; 220, heating vessel. DETAILED DESCRIPTION

[0024] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. Now, in conjunction with the accompanying drawings, a preferred embodiment of the present utility model is described in detail.

[0025] like Figures 1 to 4 As shown, the embodiment of the utility model provides a gas stove 100, including: a shell 110, an ignition assembly 120, a nozzle 130 and a mixing tube 140 arranged in the shell 110, and a burner head 150 located above the shell 110, the ignition assembly 120 includes an ignition head 122 arranged at the burner head 150, and an ignition switch 124 arranged on the shell 110, the ignition head 122 is electrically connected to the ignition switch 124, and the nozzle 130 is connected to a gas pipe 160 for passing gas The tube 160 is connected to the gas tank 170, and the burner head 150 includes a stacked lower spray plate 152, an inner spray net 154 and an upper spray plate 156. The lower spray plate 152 is connected to the mixing tube 140, and there is a gap between the inner spray net 154 and the lower spray plate 152. A plurality of through holes 1242d are evenly distributed on the inner spray net 154, and a plurality of strip holes 1562 are arranged in an array along the circumferential direction of the upper spray plate 156, and the extension direction of the strip holes 1562 is arranged radially toward the upper spray plate 156.

[0026] Specifically, when the gas stove 100 is used, the gas stove 100 needs to be connected to the gas tank 170 to supply gas to the gas stove 100. The gas flowing out of the gas tank 170 first flows into the nozzle 130 through the gas pipe 160, and then flows into the mixing tube 140, where the gas and air are mixed to facilitate the subsequent ignition of the gas. The mixed gas continues to flow upward to the burner head 150, where an ignition head 122 electrically connected to the ignition switch 124 is provided. When the ignition switch 124 is actuated, the ignition head 122 is triggered to ignite, thereby igniting the gas. It can be understood that in order to improve the ignition rate of the gas, the ignition head can be set at the center of the burner head 150.

[0027] The gas stove 100 provided in the embodiment of the present application, by setting the burner head 150 as a structure of a stacked lower spray plate 152, an inner spray net 154 and an upper spray plate 156, the gas flows to the spray head 130 through the gas pipe 160, sprays into the mixing tube 140 and mixes with the air, and then flows to the burner head 150. In the process, the mixed gas can be dispersed to the area through the gap between the inner spray net 154 and the lower spray plate 152. In the process of flowing through the inner spray net 154, a plurality of through holes 1242d are evenly arranged on the inner spray net 154, so that the mixed gas can be further dispersed, so that the mixed gas is distributed more evenly, and the air flow near the mixing tube 140 is prevented from being too large, which affects the full combustion of the gas. At the same time, by arranging a plurality of strip holes 1562 in an array along the circumferential direction of the upper spray plate 156 on the upper spray plate 156, and the extension direction of the strip holes 1562 is arranged toward the radial direction of the upper spray plate 156, it is beneficial to optimize the mixing ratio of gas and air and further improve the combustion efficiency of the gas. After the gas supply is disconnected, the flame on the burner head 150 will gradually shrink and move downward. When it moves to the position of the inner spray net 154, the gradually shrinking flame will be divided due to the influence of the multiple through holes 1242d evenly distributed on the inner spray net 154. In the absence of gas supply, the flame can be extinguished quickly, reducing the risk of gas backdraft.

[0028] In an optional embodiment of the present application, the strip holes 1562 are arranged in a staggered manner with long and short strip holes, and the outer circles of the strip holes 1562 are located on the same circumference. In this way, the structure of the upper spray plate 156 can be optimized, while enhancing the flow and mixing of air, further improving the combustion efficiency.

[0029] like Figure 1 and Figure 2 As shown, the ignition switch 124 includes an ignition bracket 1242 connected to the shell 110, and an ignition paddle 1244 rotatably connected to the ignition bracket 1242, an ignition bracket 1242 is provided with an ignition 1246, and the pressing end of the ignition 1246 is arranged corresponding to the ignition paddle 1244, wherein the ignition 1246 is electrically connected to the ignition head 122.

[0030] Specifically, the ignition paddle 1244 is used to trigger the action of the igniter 1246. The ignition paddle 1244 is rotatably connected to the ignition bracket 1242. The ignition operation can be achieved by simply moving the ignition paddle 1244 with a finger. The ignition paddle 1244 can extend to a longer position for moving, which is conducive to making the moving process more convenient and labor-saving. After the action of the igniter 1246 is triggered by the ignition paddle 1244, the electric spark generated by the igniter 1246 is transmitted to the ignition head 122, and an arcing phenomenon is generated at the ignition head 122, thereby improving the reliability of gas ignition.

[0031] like Figure 1 and Figure 3 As shown, the ignition bracket 1242 includes a first connecting portion 1242a, an extension portion 1242b and a second connecting portion 1242c which are connected in sequence. The ignition bracket 1242 is connected to the shell 110 via the first connecting portion 1242a, and the ignition paddle 1244 is connected to the ignition bracket 1242 via the second connecting portion 1242c. A through hole 1242d is also provided on the ignition bracket 1242 to allow the air pipe 160 to extend through the ignition bracket 1242.

[0032] Specifically, when the first connection portion 1242a is connected to the housing 110, it extends into the housing 110 and is connected and fixed to the housing 110 by screws, which is conducive to ensuring the stability of the connection. At the same time, by providing an extension portion 1242b on the ignition bracket 1242, the second connection portion 1242c can be extended to a position away from the housing 110. In this way, if the gas stove 100 is placed in the support frame in advance and then ignited, it will not affect the normal ignition, which is conducive to improving the convenience during operation. The ignition paddle 1244 is connected to the ignition bracket 1242 through the second connection portion 1242c. When igniting, it is only necessary to move the ignition paddle 1244 to achieve the required ignition operation. In addition, the through hole 1242d provided on the ignition bracket 1242 can play an auxiliary fixing role for the trachea 160 when the trachea 160 passes through the ignition bracket 1242, which is conducive to ensuring the stability of the connection between the trachea 160 and the nozzle 130.

[0033] like Figure 3 As shown, the nozzle 130 includes a seat body 132 and a nozzle 134 connected to each other, the first connecting portion 1242a extends into the shell 110, and the nozzle 134 passes through the first connecting portion 1242a and extends into the mixing tube 140 to communicate with the mixing tube 140, and the nozzle 130 is connected to the air pipe 160 through the seat body 132.

[0034] Specifically, the first connection portion 1242a extends into the housing 110, and the nozzle 134 passes through the first connection portion 1242a and extends into the mixing tube 140. The first connection portion 1242a can be used to fix the nozzle 130, which is beneficial to improve space utilization and reduce the complexity of fixation. After the nozzle 130 is connected to the gas pipe 160 through the seat body 132, the gas can be introduced into the mixing tube 140 through the nozzle 134. Among them, the position where the seat body 132 is connected to the gas pipe 160, and the position of the nozzle 134 can be flexibly changed according to the specific setting form, as long as the normal circulation of the gas can be guaranteed.

[0035] Please continue to refer to Figure 3A plurality of through holes 142 are arranged in a circumferential array on the mixing tube 140, the shell 110 includes a side wall 112 connected to the ignition switch 124, and a top cover 114 connected to the side wall 112, one end of the mixing tube 140 passes through the top cover 114, and a plurality of ventilation holes 1142 are arranged in a circumferential array on the top cover 114, and the ventilation holes 1142 are connected to the through holes 142.

[0036] Specifically, the housing 110 can protect the mixing tube 140 disposed in the housing 110. At the same time, by providing a plurality of vent holes 1142 in a circumferential array on the top cover 114, air can flow into the housing 110 through the vent holes 1142, and finally mix with the gas in the mixing tube 140 through the through holes 142. By providing a plurality of through holes 142 in a circumferential array on the mixing tube 140, sufficient mixing is ensured, which is beneficial to sufficient combustion of the subsequent gas.

[0037] In an optional embodiment of the present application, the vent holes 1142 are in the shape of an elongated strip, the vent holes 1142 extend in a radial direction of the top cover 114 , and the vent holes 1142 are staggered in length.

[0038] In actual applications, the top cover 114 can be set to a convex arc surface. When a plurality of air holes 1142 are set in a circular array on the top cover 114, the air holes 1142 in the center appear dense due to the smaller diameter near the center, while the air holes in the outer circle are relatively sparse. By adding shorter air holes 1142 in the outer circle, the air circulation can be guaranteed, and the structural strength of the top cover 114 itself can be guaranteed, while preventing other impurities from falling into the shell 110.

[0039] In an optional embodiment of the present application, Figure 4 As shown, the centers of the upper spray plate 156 and the inner spray net 154 are concave toward one side of the lower spray plate 152, and the shape of the through hole 1242d is one of a circular hole, an elliptical hole, a diamond hole, a regular triangle hole and a regular hexagonal hole.

[0040] Specifically, by concavely placing the center of the upper spray plate 156 and the inner spray net 154 toward one side of the lower spray plate 152, it is helpful to ensure the concentration of firepower and improve heating efficiency. In addition, by setting the through hole 1242d to different shapes, it is helpful to adjust the mixing effect of gas and air to suit different use environments.

[0041] like Figure 5As shown, the utility model also discloses a combined heating device 200, including a support frame 210, a heating vessel 220, a gas cylinder 170, and the gas stove 100 in the aforementioned embodiment, the heating vessel 220 is mounted on the support frame 210, the gas stove 100 is connected to the gas cylinder 170 through the air pipe 160, and the gas stove 100 is arranged in the support frame 210. Among them, the heating vessel 220 can be a kettle or a pot, and the embodiment of the present application does not make specific restrictions on this. The combined heating device 200 includes the same structure and beneficial effects as the gas stove 100 in the aforementioned embodiment. The structure and beneficial effects of the gas stove 100 have been described in detail in the aforementioned embodiment, and will not be repeated here.

[0042] Please continue to refer to Figure 5 The gas tank 170 includes a tank body 172 and a switch valve 174 disposed on the tank body 172 , and the gas pipe 160 is connected to the tank body 172 via the switch valve 174 .

[0043] In this way, when the gas stove 100 needs to be used, the switch valve 174 can be opened to allow the gas to flow to the gas stove 100 for ignition. When the use is over, the switch valve 174 can be closed to cut off the flow of gas, so that the flame of the gas stove 100 is extinguished, which is conducive to improving the safety during use.

[0044] It should be understood that the above embodiments are only used to illustrate the technical solutions of the present utility model rather than to limit it. For those skilled in the art, the technical solutions described in the above embodiments can be modified, or some of the technical features therein can be replaced by equivalents; and all these modifications and replacements should fall within the scope of protection of the claims attached to the present utility model.

Claims

1. A gas furnace, characterized in that: include: A shell, an ignition assembly, a nozzle and a mixing tube arranged in the shell, and a burner located above the shell, the ignition assembly includes an ignition head arranged at the burner head, and an ignition switch arranged on the shell, the ignition head is electrically connected to the ignition switch, an air pipe is connected to the nozzle for connecting to a gas tank through the air pipe, the burner includes a stacked lower spray plate, an inner spray net and an upper spray plate, the lower spray plate is connected to the mixing tube, and there is a gap between the inner spray net and the lower spray plate, a plurality of through holes are evenly distributed on the inner spray net, a plurality of strip holes are arranged in an array along the circumferential direction of the upper spray plate on the upper spray plate, and the extension direction of the strip holes is arranged toward the radial direction of the upper spray plate.

2. The gas furnace according to claim 1, characterized in that: The ignition switch includes an ignition bracket connected to the housing, and an ignition paddle rotatably connected to the ignition bracket, an igniter is arranged in the ignition bracket, and a pressing end of the igniter is arranged corresponding to the ignition paddle, wherein the igniter is electrically connected to the ignition head.

3. The gas furnace according to claim 2, characterized in that: The ignition bracket includes a first connecting portion, an extension portion, and a second connecting portion that are connected in sequence. The ignition bracket is connected to the shell via the first connecting portion, and the ignition paddle is connected to the ignition bracket via the second connecting portion. A through hole is also provided on the ignition bracket to allow the air pipe to extend through the ignition bracket.

4. The gas furnace according to claim 3, characterized in that: The nozzle comprises a seat body and a nozzle which are connected to each other. The first connection part extends into the shell, and the nozzle passes through the first connection part and extends into the mixing tube to communicate with the mixing tube. The nozzle is connected to the air pipe through the seat body.

5. The gas furnace according to claim 4, characterized in that: A plurality of through holes are arranged in a circumferential array on the mixing tube, the shell includes a side wall connected to the ignition switch, and a top cover connected to the side wall, one end of the mixing tube passes through the top cover, a plurality of ventilation holes are arranged in a circumferential array on the top cover, and the ventilation holes are connected to the through holes.

6. The gas furnace according to claim 5, characterized in that: The ventilation holes are in the shape of long strips, the extension direction of the ventilation holes is arranged toward the radial direction of the top cover, and the ventilation holes are arranged in a staggered manner with long and short holes.

7. The gas furnace according to any one of claims 1 to 6, characterized in that: The centers of the upper spray plate and the inner spray net are concave toward one side of the lower spray plate, and the shape of the through hole is one of a circular hole, an elliptical hole, a diamond hole, a regular triangle hole and a regular hexagonal hole.

8. The gas furnace according to any one of claims 1 to 6, characterized in that: The strip holes are arranged in a staggered manner with long and short lengths, and the outer circles of the strip holes are located on the same circumference.

9. A combined heating device, characterized in that: It comprises a support frame, a heating vessel, a gas tank, and the gas furnace according to any one of claims 1 to 8, wherein the heating vessel is mounted on the support frame, the gas furnace is connected to the gas tank through a gas pipe, and the gas furnace is arranged in the support frame.

10. The combined heating device according to claim 9, characterized in that: The gas tank comprises a tank body and a switch valve arranged on the tank body, and the gas pipe is connected to the tank body through the switch valve.

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