CN220038546U - Gas stove - Google Patents

Abstract

The utility model relates to a gas stove, which comprises a stove panel, a heat shield arranged on the stove panel and a burner surrounded by the heat shield, wherein an injection pipe for injecting primary air and gas to the burner is arranged below the stove panel, and is characterized in that: the heat shield is of a double-layer structure and is provided with a cavity for preheating primary air, the bottom of the heat shield is provided with an opening communicated with the cavity corresponding to the air inlet end of the injection pipe, correspondingly, the kitchen range panel is provided with a communication hole communicated with the opening, and compared with the prior art, the heat shield has the advantages that: the cavity in the double-layer structure of the heat shield is filled with air, so that the effects of high concentration of heat quantity on the inner side and little heat dissipation on the outer side are achieved, the communication hole on the cooker panel is fully utilized to be communicated with the opening of the heat shield and corresponds to the air inlet end of the injection pipe, and therefore primary air injected by the injection pipe is preheated primary air, and the combustion efficiency is effectively improved.

Description

Gas stove

Technical Field

The utility model relates to the technical field of household kitchen ware, in particular to a gas stove capable of improving primary air preheating.

Background

In the actual use process of the existing gas cooker, as the cooker is arranged on the cooker support to heat, a certain space is reserved between the cooker and the burner, so that a considerable part of heat energy generated by gas combustion can escape into the surrounding environment besides being used for heating the cooker, and energy waste is caused; in order to solve the problems, some heat collecting and energy accumulating structures are recently developed in China, such as ZL202021775227.0 issued by the inventor of the present utility model and entitled CN 213777859U), a heat shield for a kitchen range and a gas stove using the heat shield, which comprises an annular shield body, wherein an annular cavity is formed in the center of the shield body, the shield body is double-layered and has a cavity, an air inlet hole for the outside air to flow into the cavity is formed in the outer side wall or the bottom wall of the shield body, an annular inner step is formed in the upper surface of the top of the shield body, air outlet holes for communicating the annular cavity with the cavity are formed in the first wall surface above the annular inner step at intervals along the circumferential direction, the heat shield is provided with an air inlet hole for the outside air to flow into the cavity of the heat shield, so that the outside air can be effectively preheated, the preheated secondary air can be separated by the air outlet holes to provide the preheated secondary air for a burner, and the secondary air between the inner ring and the outer ring can be avoided, so that the gas utilization rate can be effectively improved.

Although this heat shield can provide preheated secondary air, it cannot be independently supplemented with the preheated secondary air for the inner ring or the outer ring fire cover in the burner, that is, there is a case where the preheated secondary air is contended for due to the difference in the combustion load of the inner ring or the outer ring, for which further improvement is required.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a gas stove which can realize primary air from the source, namely, the primary air is ejected from an ejector pipe after being preheated.

In order to solve the technical problems, the utility model adopts the following technical scheme: this gas-cooker, including cooking utensils panel, shelve the heat exchanger on this cooking utensils panel and by the combustor that the heat exchanger encloses and establish, still be provided with under the cooking utensils panel and be used for to the injection pipe of combustor injection primary air and gas, its characterized in that: the heat shield is of a double-layer structure and is provided with a cavity for preheating primary air, the bottom of the heat shield is provided with an opening communicated with the cavity corresponding to the air inlet end of the injection pipe, and correspondingly, the kitchen range panel is provided with a communication hole communicated with the opening.

Further, the heat shield is a double-layer structure formed by an upper layer shield and a lower layer shield, wherein the lower layer shield is provided with concave-convex structures at least at three positions corresponding to the bottom wall of the cavity to form support legs distributed along the circumferential direction, and the opening is formed in one support leg. The heat shield is of a double-layer structure, and the supporting legs are formed by the concave lower-layer shield, so that on one hand, the volume of a cavity in the heat shield can be increased, and meanwhile, the capacity of air or heat-insulating materials in the heat shield is increased, so that the cost of raw materials is saved, and meanwhile, the heat-insulating property is improved; the heat transfer quantity of the upper cover to the four support legs can be effectively reduced, namely, the heat dissipation from the four support legs to the kitchen range panel is reduced, and the opening communicated with the communication hole of the kitchen range panel is formed in one support leg, so that the kitchen range panel is convenient to process.

In order to realize the integration of injection pipe and combustor in order to simplify the structure, further, injection pipe with the combustor homogeneity sets up on the base, the shaping has the injection chamber of corresponding injection pipe on the base, the combustor with injection chamber fluid communication.

In order to realize uniform heating of the bottom of the pot, flame-stabilizing combustion can be realized, preferably, the burner comprises an internal combustion air chamber positioned in the center, an internal flame-stabilizing chamber used for stabilizing the internal combustion air chamber, an external combustion air chamber positioned at the periphery of the internal combustion air chamber and an external flame-stabilizing chamber used for stabilizing the external combustion air chamber, and correspondingly, the injection cavity of the base comprises an internal injection cavity used for being communicated with the internal combustion air chamber, a flame-stabilizing cavity used for being communicated with the internal flame-stabilizing chamber and the external flame-stabilizing chamber and an external injection cavity used for being communicated with the external combustion air chamber. Because the inner injection cavity, the outer injection cavity and the flame stabilizing cavity are mutually independent, stable fireworks, inner main fire and outer main fire can be realized without mutual influence during combustion.

In order to achieve better mixing degree when primary air and fuel gas preheated by the heat shield enter respective injection cavities, preferably, the sections of the inner injection cavity, the outer injection cavity and/or the flame stabilizing cavity are sequentially divided into a contraction section, a mixing section and a diffusion section along the flow direction of air flow. The contraction section can accelerate the primary air and the fuel gas into the respective injection cavities, the mixing section is used for enhancing the mixing, and the diffusion section is used for slowing down the entering speed of the primary air and the fuel gas so as to accelerate the improvement of the final mixing degree.

In order to facilitate the placement of the cookware, preferably, the top of the heat shield is provided with pot support legs at intervals along the circumferential direction for placing the cookware.

Compared with the prior art, the utility model has the advantages that: the cavity in the double-layer structure of the heat shield is filled with air, the poor heat transfer performance of the air is utilized to play a role in heat preservation and heat insulation, the purposes of high temperature at the inner side of the upper layer and low temperature at the outer side of the lower layer are achieved, the effects of high concentration of heat at the inner side and little heat dissipation at the outer side are achieved, communication holes on a kitchen range panel and the opening of the heat shield are fully utilized to communicate and correspond to the air inlet end of the injection pipe, so that primary air injected by the injection pipe is preheated, and the primary air can be preheated from the source, so that the combustion efficiency is effectively improved.

Drawings

FIG. 1 is a schematic view of a gas stove according to an embodiment of the present utility model;

FIG. 2 is a partial cross-sectional view of FIG. 1;

FIG. 3 is a schematic view of a burner and base integrated arrangement in accordance with an embodiment of the present utility model;

FIG. 4 is a cross-sectional view taken at an angle to FIG. 3;

fig. 5 is a cross-sectional view of another angle of fig. 3.

Detailed Description

The utility model is described in further detail below with reference to the embodiments of the drawings.

As shown in fig. 1 to 5, is a preferred embodiment of the present utility model. The gas stove of this embodiment includes cooking utensils panel 1, shelve the heat exchanger 2 on this cooking utensils panel 1 and by the combustor 3 that heat exchanger 2 encloses, still be provided with the injection pipe that is used for penetrating primary air and gas to combustor 3 below the cooking utensils panel 1, wherein heat exchanger 2 is bilayer structure and is formed with the cavity 21 that is used for preheating primary air, the bottom of heat exchanger 2 corresponds the air inlet end of injection pipe and has offered the opening 22 with cavity 21 intercommunication, correspondingly, offered the intercommunicating pore 11 with opening 22 intercommunication on the cooking utensils panel 1. The cavity 21 in the double-layer structure of the heat shield 2 is filled with air, the poor heat transfer performance of the air is utilized to play a role in heat preservation and heat insulation, the purposes of high temperature at the inner side of the upper layer and low temperature at the outer side of the lower layer are achieved, the effects of high concentration of heat at the inner side and little heat dissipation at the outer side are achieved, the communication hole 11 on the kitchen range panel 1 is fully utilized to be communicated with the opening 22 of the heat shield 2 and corresponds to the air inlet end of the injection pipe, and therefore primary air injected by the injection pipe is preheated primary air, the primary air can be preheated from the source, and the combustion efficiency is effectively improved.

Specifically, the heat shield 2 of the present embodiment has a double-layer structure composed of an upper cover 23 and a lower cover 24, the lower cover 24 has a concave-convex structure on at least three points corresponding to the bottom wall of the cavity 21 to form circumferentially distributed legs 25, and the opening 22 is opened on one of the legs 25. The heat shield 2 is of a double-layer structure, and the supporting legs 25 are formed by the downward concave shape of the lower-layer shield 24, so that on one hand, the volume of the cavity 21 in the heat shield 2 can be increased, the capacity of air or heat-insulating materials in the heat shield 2 can be increased, the cost of raw materials can be saved, and meanwhile, the heat-insulating property can be improved; the heat transfer quantity of the upper cover 23 to the four support legs 25 can be effectively reduced, namely, the heat dissipation from the four support legs 25 to the kitchen range panel 1 is reduced, and the opening 22 communicated with the communication hole 11 of the kitchen range panel 1 is formed in one support leg 25, so that the processing is convenient. The integration that draws ejector tube and combustor 3 has still been realized in this embodiment in order to simplify the structure, with drawing ejector tube and combustor 3 homogeneity setting on base 4, the shaping has the injection chamber that corresponds the ejector tube on the base 4, combustor 3 and injection chamber fluid communication.

The burner 3 comprises an internal combustion air chamber 31 positioned in the center, an internal flame stabilizing chamber 32 used for stabilizing the flame of the internal combustion air chamber 31, an external combustion air chamber 33 positioned at the periphery of the internal combustion air chamber 31 and an external flame stabilizing chamber 34 used for stabilizing the flame of the external combustion air chamber 33, and correspondingly, the injection cavity of the base 4 comprises an internal injection cavity 41 used for communicating with the internal combustion air chamber 31, a flame stabilizing cavity 42 used for communicating with the internal flame stabilizing chamber 32 and the external flame stabilizing chamber 34 and an external injection cavity 43 used for communicating with the external combustion air chamber 33. Because the inner ejection chamber 41, the outer ejection chamber 43 and the flame stabilizing chamber 42 are mutually independent, stable flame, internal main flame and external main flame can be realized without mutual influence when being combusted, so that the bottom of the pot is uniformly heated, and stable flame can be combusted at the same time, and the cross sections of the inner ejection chamber 41, the flame stabilizing chamber 42 and the outer ejection chamber 43 are sequentially divided into a contraction section 44, a mixing section 45 and a diffusion section 46 along the flow direction of air flow in order to realize better mixing degree when primary air and fuel gas preheated by the heat shield 2 enter the respective ejection chambers, the contraction section 44 can accelerate the primary air and the fuel gas into the respective ejection chambers, the mixing section 45 is used for enhancing mixing, the diffusion section 46 is used for slowing down the speed of the primary air and the fuel gas so as to accelerate the final mixing degree, and finally, the pot support legs 26 for placing the pot are arranged at the top of the heat shield 2 along the circumferential direction at intervals.

To sum up, the primary air of the gas stove is preheated by the heat shield 2 and then enters the inner injection cavity 41, the outer injection cavity 43 and the flame stabilizing cavity 42 of the base 4 respectively, and passes through the contraction section 44, the mixing section 45 and the diffusion section 46 of the respective injection cavities to improve the mixing degree of the primary air and the fuel gas, and finally flows into the internal combustion air chamber 31, the external combustion air chamber 33, the inner flame stabilizing chamber 32 and the outer flame stabilizing chamber 34 of the combustor 3 to improve the combustion efficiency.

Claims (6)

1. The utility model provides a gas-cooker, is including cooking utensils panel (1), lay heat exchanger (2) on this cooking utensils panel (1) and by combustor (3) that heat exchanger (2) enclose, still be provided with under cooking utensils panel (1) and be used for to the injection pipe of combustor (3) injection primary air and gas, its characterized in that: the heat shield (2) is of a double-layer structure and is provided with a cavity (21) for preheating primary air, an opening (22) communicated with the cavity (21) is formed in the bottom of the heat shield (2) corresponding to the air inlet end of the injection pipe, and correspondingly, a communication hole (11) communicated with the opening (22) is formed in the kitchen range panel (1).

2. The gas cooker as claimed in claim 1, wherein: the heat shield (2) is of a double-layer structure formed by an upper layer shield (23) and a lower layer shield (24), the lower layer shield (24) is provided with concave-convex structures at least at three positions on the bottom wall corresponding to the cavity (21) to form support legs (25) distributed along the circumferential direction, and the opening (22) is formed in one of the support legs (25).

3. The gas cooker as claimed in claim 2, wherein: the injection pipe and the burner (3) are uniformly arranged on the base (4), an injection cavity corresponding to the injection pipe is formed on the base (4), and the burner (3) is in fluid communication with the injection cavity.

4. A gas cooker as claimed in claim 3, wherein: the burner (3) comprises an internal combustion air chamber (31) positioned in the center, an internal flame stabilizing chamber (32) used for stabilizing the flame of the internal combustion air chamber (31), an external combustion air chamber (33) positioned at the periphery of the internal combustion air chamber (31) and an external flame stabilizing chamber (34) used for stabilizing the flame of the external combustion air chamber (33), and correspondingly, the injection cavity of the base (4) comprises an internal injection cavity (41) used for being communicated with the internal combustion air chamber (31), a flame stabilizing cavity (42) used for being communicated with the internal flame stabilizing chamber (32) and the external flame stabilizing chamber (34) and an external injection cavity (43) used for being communicated with the external combustion air chamber (33).

5. The gas cooker as claimed in claim 4, wherein: the sections of the inner ejection cavity (41), the outer ejection cavity (43) and/or the flame stabilizing cavity (42) are sequentially divided into a contraction section (44), a mixing section (45) and a diffusion section (46) along the flow direction of the airflow.

6. The gas cooker according to any one of claims 1 to 5, characterized in that: the top of the heat shield (2) is provided with pot support legs (26) for placing a pot at intervals along the circumferential direction.