Gas stove

Abstract

The utility model relates to the technical field of kitchen equipment, and particularly discloses a gas stove which comprises an injection pipe, a furnace end seat and an air blower, the injection pipe is provided with a fuel input port, a primary air inlet and an injection air outlet, the injection air outlet is communicated with an air inlet channel of the furnace end seat, and the air blower is provided with an air outlet and a first air inlet. The air outlet communicates with the primary air inlet, the first air inlet is used for inputting heated air, the air blower sucks in the heated air through the first air inlet and then supplies the heated air to the injection pipe, and the temperature of mixed gas obtained after primary air and natural gas are mixed in the injection pipe can be effectively increased; therefore, the temperature difference between the mixed gas and the high-temperature flue gas generated after combustion can be reduced, and the heat consumed for increasing the temperature is reduced, so that the combustion efficiency of the gas stove is improved.

Description

Technical Field

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

[0002] A gas stove can generate heat by burning natural gas, and this heat can be used for cooking. During the combustion of natural gas, a certain amount of oxygen needs to be supplemented. Some existing burners of gas stoves use the natural ejection method for the primary air supply. Specifically, a mixing ejection of gas and air is carried out through an ejection pipe, and then it is supplied to the burner for combustion reaction. However, the following problems exist in this burner:

[0003] 1), The air introduced by the ejection pipe is at room temperature, while the flue gas generated after combustion is at a high temperature. There is a temperature difference between the two, and the increase in temperature requires consuming a part of the heat generated by the combustion reaction, thereby reducing the combustion efficiency of the gas stove;

[0004] 2), A part of the heat released after the combustion of natural gas will be absorbed by the pot support, and wasted through heat exchange with the surrounding environment, which will further reduce the combustion efficiency of the gas stove.

[0005] Therefore, there is an urgent need for a gas stove to solve the above problems. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a gas stove to improve the combustion efficiency of the gas stove.

[0007] The utility model provides a gas stove, which includes an ejection pipe and a burner base. The ejection pipe has a fuel input port, a primary air inlet, and an ejection air outlet. The ejection air outlet is communicated with the air inlet channel of the burner base. The gas stove further includes a blower, which has an air outlet and a first air inlet. The air outlet is communicated with the primary air inlet, and the first air inlet is used for inputting heated air.

[0008] As a preferred technical solution of the gas stove, the gas stove further includes a preheating pot support and an air inlet pipe. The preheating pot support is used to support cookware. A preheating cavity is arranged inside the preheating pot support, and an air inlet for communicating the preheating cavity with the outside is provided. The air inlet pipe is respectively communicated with the first air inlet and the preheating cavity.

[0009] As a preferred technical solution of the gas stove, the preheating cavity is annular, and the gas stove includes a plurality of air inlet pipes, and the plurality of air inlet pipes are evenly distributed along the circumferential direction of the preheating cavity.

[0010] As a preferred technical solution of the gas stove, a heat preservation cavity is further arranged inside the preheating pot support, and the heat preservation cavity is located above the preheating cavity.

[0011] As a preferred technical solution of the gas stove, a transition cavity is further provided in the preheating pot rack, and the transition cavity is located between the preheating cavity and the heat preservation cavity.

[0012] As a preferred technical solution of the gas stove, the volume of the transition cavity is smaller than the volume of the heat preservation cavity, and the volume of the transition cavity is smaller than the volume of the preheating cavity.

[0013] As a preferred technical solution of the gas stove, the gas stove further includes a water receiving tray disposed below the preheating pot rack, and the air inlet pipe passes through the water receiving tray; and / or,

[0014] The air inlet pipe is attached to the outer wall of the burner base, and the air inlet pipe is attached to the outer wall of the ejector pipe.

[0015] As a preferred technical solution of the gas stove, the preheating cavity is provided with a plurality of air inlets, and the plurality of air inlets are uniformly distributed along the circumferential direction of the preheating cavity.

[0016] As a preferred technical solution of the gas stove, the blower further has a second air inlet for inputting normal temperature air.

[0017] As a preferred technical solution of the gas stove, the second air inlet surrounds the outer circumference of the first air inlet, and the center line of the second air inlet coincides with the center line of the first air inlet.

[0018] The gas stove provided by the present utility model at least has the following beneficial effects:

[0019] The gas stove includes an ejector pipe, a burner base and a blower. The ejector pipe has a fuel input port, a primary air inlet and an ejection outlet. The ejection outlet is communicated with the air inlet channel of the burner base. The blower has an air outlet and a first air inlet. The air outlet is communicated with the primary air inlet. The first air inlet is used for inputting heated air. The blower inhales the heated air through the first air inlet and then supplies it to the ejector pipe, which can effectively increase the temperature of the mixed gas after the primary air and natural gas are mixed in the ejector pipe. Furthermore, it can reduce the temperature difference between the mixed gas and the high-temperature flue gas generated after combustion, and reduce the heat consumed for temperature increase, so as to improve the combustion efficiency of the gas stove. Description of the Drawings

[0020] Figure 1 is a schematic structural view of the gas stove in the embodiment of the present utility model Figure 1 ;

[0021] Figure 2 is a schematic structural view of the gas stove in the embodiment of the present utility model Figure 2 ;

[0022] Figure 3Structural schematic diagram of the gas stove in the embodiment of the present utility model Figure 3 ;

[0023] Figure 4 Structural schematic diagram of the blower in the gas stove in the embodiment of the present utility model;

[0024] Figure 5 Cross-sectional view of the preheating pot rack in the gas stove in the embodiment of the present utility model.

[0025] In the figure:

[0026] 1. Ejector pipe; 2. Burner head base; 3. Nozzle;

[0027] 41. Inner fire cover; 42. Outer fire cover;

[0028] 5. Blower; 51. First air inlet; 52. Air outlet; 53. Second air inlet;

[0029] 6. Preheating pot rack; 61. Preheating cavity; 62. Air intake port; 63. Heat preservation cavity; 64. Transition cavity;

[0030] 71. Air inlet pipe; 72. Summarizing pipe;

[0031] 8. Water receiving tray; 9. Mounting seat. Detailed implementation manners

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0033] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions. Moreover, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0034] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0035] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0036] Please refer to Figures 1 to 3 , this embodiment provides a gas stove, which includes an ejector tube 1 and a burner base 2. The ejector tube 1 has a fuel inlet, a primary air inlet, and an ejection outlet, and the ejection outlet is communicated with the intake passage of the burner base 2. Specifically, in this embodiment, the fuel inlet is used to input natural gas, the primary air inlet is used to introduce primary air, and the natural gas and the primary air are mixed and then transported into the intake passage of the burner base 2. The burner base 2 distributes the input mixed gas to the inner burner cover 41 and the outer burner cover 42 for combustion reaction. Among them, a nozzle 3 is provided at the primary air inlet of the ejector tube 1, and the nozzle 3 is used to connect the gas supply pipeline of natural gas, and the natural gas is sprayed into the ejector tube 1 through the nozzle 3.

[0037] Existing gas stoves mix and eject gas and air through an ejector pipe, and then supply it to the burner for combustion reaction. The air introduced by the ejector pipe is at room temperature, while the flue gas generated after combustion is at a high temperature. There is a temperature difference between the two, and the increase in temperature requires consuming a part of the heat generated by the combustion reaction, thereby reducing the combustion efficiency of the gas stove.

[0038] In this regard, in this embodiment, the gas stove further includes a blower 5. The blower 5 has an air outlet 52 and a first air inlet 51. The first air inlet 51 is used to input heated air, and the air outlet 52 is communicated with the primary air inlet. With such a setting, the blower 5 sucks in the heated air through the first air inlet 51 and then supplies it to the ejector pipe 1, which can effectively increase the temperature of the mixed gas after the air and natural gas are mixed in the ejector pipe 1. Furthermore, it can reduce the temperature difference between the mixed gas and the high-temperature flue gas generated after combustion, and reduce the heat consumed for temperature increase, so as to improve the combustion efficiency of the gas stove.

[0039] Specifically, in this embodiment, a mounting seat 9 is provided on the ejector pipe 1, and the blower 5 is mounted on the mounting seat 9.

[0040] In the existing gas stove, a part of the heat released after the natural gas burns is absorbed by the pot support and wasted through heat exchange with the surrounding environment, which will further reduce the combustion efficiency of the gas stove.

[0041] In this regard, in this embodiment, the gas stove further includes a preheating pot support 6 and an air inlet pipe 71. The preheating pot support 6 is used to support the cookware. A preheating cavity 61 is provided inside the preheating pot support 6, and an air inlet 62 communicating the preheating cavity 61 with the outside, and the air inlet pipe 71 is respectively communicated with the first air inlet 51 and the preheating cavity 61.

[0042] Since the combustion reaction is carried out inside the preheating pot support 6, the preheating pot support 6 can absorb enough heat to maintain a high temperature. Therefore, the preheating pot support 6 can heat the air entering the preheating cavity 61 from the air inlet 62 through the preheating cavity 61. The heated air can be successively transported to the burner head through the blower 5, the ejector pipe 1 and the furnace head seat 2 and supplied to the natural gas for combustion, so as to recover and reuse part of the heat absorbed by the preheating pot support 6, reduce the heat loss caused by heat exchange between the preheating pot support 6 and the surrounding environment, and further improve the combustion efficiency of the gas stove.

[0043] It should be noted that the heating method of the air introduced by the ejector pipe 1 in this embodiment is not limited to the above-mentioned one method, and the heat source for heating the air can also come from other external heating devices, such as the heat absorbed by a waste heat recovery device arranged in the kitchen, the heat dissipated when other kitchen appliances in the kitchen work, the heat generated when an electric heater works, and the heat generated when a solar heater works, etc.

[0044] Optionally, see Figure 4 The blower 5 also has a second air inlet 53, which is used to input air at normal temperature. By providing the second air inlet 53, sufficient air supply to the ejector pipe 1 can be ensured, thereby ensuring sufficient combustion of natural gas. In addition, by adjusting the opening of the second air inlet 53 and the opening of the first air inlet 51, the temperature of the air delivered to the ejector pipe 1 can also be adjusted to meet the needs of different working conditions.

[0045] Optionally, please refer again to Figure 4 , the second air inlet 53 surrounds the outer periphery of the first air inlet 51, and the center line of the second air inlet 53 coincides with the center line of the first air inlet 51. Such a configuration is conducive to the full mixing of the hot air entering from the first air inlet 51 and the normal temperature air entering from the second air inlet 53, thereby ensuring the temperature balance of the mixed air. Exemplarily, the first air inlet 51 is configured in a circular shape, the second air inlet 53 is configured in a circular ring shape, and the area of ​​the first air inlet 51 is smaller than the area of ​​the second air inlet 53.

[0046] Optionally, see Figure 5 The preheating chamber 61 is provided with a plurality of air inlets 62, and the plurality of air inlets 62 are evenly distributed along the circumferential direction of the preheating chamber 61. Such a configuration can ensure that enough air enters the preheating chamber 61, thereby ensuring that the preheating chamber 61 can supply enough heated air to the blower 5 through the air inlet pipe 71.

[0047] Optionally, please refer again to Figure 5 , the preheating chamber 61 is annular, and the gas stove includes a plurality of air inlet pipes 71, and the plurality of air inlet pipes 71 are evenly distributed along the circumferential direction of the preheating chamber 61. Such an arrangement can ensure the rate of heated air supplied to the blower 5 by the preheating chamber 61 through the air inlet pipe 71, and the temperature of the air in each part of the preheating chamber 61 can be kept relatively balanced, thereby ensuring the heating effect of the air. Specifically, this embodiment exemplarily provides a solution in which the gas stove includes two air inlet pipes 71, and the two air inlet pipes 71 are respectively arranged on the left and right sides of the burner base 2.

[0048] Optionally, see Figure 2 and Figure 3 The gas stove further includes a water receiving pan 8 disposed below the preheating pot rack 6, and an air inlet pipe 71 is disposed through the water receiving pan 8. In this embodiment, an air intake gap is provided between the bottom surface of the preheating pot rack 6 and the water receiving pan 8, and the air inlet 62 is connected to the air intake gap. External air enters the air inlet 62 through the air intake gap. When the air passes through the air intake gap, the air can also exchange heat with the surface of the preheating pot rack 6 to initially increase the temperature, so as to further improve the heating effect of the preheating pot rack 6 on the air.

[0049] Optionally, see Figures 1 to 3, the air inlet pipe 71 is attached to the outer wall of the burner base 2, and the air inlet pipe 71 is also attached to the outer wall of the ejector pipe 1. Such an arrangement can ensure the overall aesthetic appearance of the gas stove. Among them, the left air inlet pipe 71 and the right air inlet pipe 71 are respectively integrated with the outer wall of the burner base 2 and the outer wall of the ejector pipe 1. It should be noted that multiple air inlet pipes 71 can all be connected to the first air inlet 51, or they can converge to a collecting pipe 72 at a position close to the ejector pipe 1, and this collecting pipe 72 is connected to the first air inlet 51.

[0050] Optionally, please refer to Figure 5 , a heat preservation cavity 63 is further provided in the preheating pot rack 6, and the heat preservation cavity 63 is located above the preheating cavity 61. Specifically, in this embodiment, the preheating pot rack 6 has a disc-shaped structure, and the upper surface of the preheating pot rack 6 forms a semi-enclosed accommodating space, which is used to accommodate the high-temperature flue gas generated by the combustion of natural gas and slow down its rate of dissipation to the outside, so as to increase the heat exchange time between the high-temperature flue gas and the bottom of the pot, and thus improve the combustion efficiency of the gas stove. In this embodiment, by providing the heat preservation cavity 63 in the preheating pot rack 6, it is possible to prevent the temperature of the upper surface of the preheating pot rack 6 from being affected by the preheating cavity 61 and decreasing, thereby reducing the consumption of the heat of the high-temperature flue gas by the upper surface of the preheating pot rack 6 and avoiding affecting the heat exchange effect between the high-temperature flue gas and the bottom of the pot.

[0051] Optionally, please refer to again Figure 5 , a transition cavity 64 is further provided in the preheating pot rack 6, and the transition cavity 64 is located between the preheating cavity 61 and the heat preservation cavity 63. By providing the transition cavity 64, it is possible to further reduce the heat transfer between the heat preservation cavity 63 and the preheating cavity 61 and further ensure the heat exchange effect between the high-temperature flue gas and the bottom of the pot.

[0052] Optionally, please refer to again Figure 5 , the volume of the transition cavity 64 is smaller than the volume of the heat preservation cavity 63, and the volume of the transition cavity 64 is smaller than the volume of the preheating cavity 61. With such an arrangement, it can effectively ensure that the air absorbs sufficient heat in the relatively large preheating cavity 61 and ensure the air supply to the ejector pipe 1; at the same time, it can also ensure the heat preservation effect of the heat preservation cavity 63 on the upper surface of the preheating pot rack 6.

[0053] Obviously, the above-mentioned embodiments of the present invention are merely examples for clearly explaining the present invention, rather than limiting the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation manners here. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A gas stove, comprising an ejector tube (1) and a burner base (2), wherein the ejector tube (1) has a fuel input port, a primary air inlet and an ejector air outlet, wherein the ejector air outlet is connected to an air inlet passage of the burner base (2), and characterized in that: The gas stove further comprises a blower (5), wherein the blower (5) comprises an air outlet (52) and a first air inlet (51), wherein the air outlet (52) is connected to the primary air inlet, and the first air inlet (51) is used for inputting heated air.

2. The gas stove according to claim 1, characterized in that: The gas stove further comprises a preheating pot rack (6) and an air inlet pipe (71); the preheating pot rack (6) is used to support the pot; a preheating cavity (61) and an air inlet (62) communicating with the preheating cavity (61) and the outside world are arranged in the preheating pot rack (6); the air inlet pipe (71) is communicated with the first air inlet (51) and the preheating cavity (61) respectively.

3. The gas stove according to claim 2, characterized in that: The preheating chamber (61) is annular, and the gas stove comprises a plurality of air inlet pipes (71), wherein the plurality of air inlet pipes (71) are evenly distributed along the circumferential direction of the preheating chamber (61).

4. The gas stove according to claim 2, characterized in that: A heat preservation chamber (63) is also provided in the preheating pot rack (6), and the heat preservation chamber (63) is located above the preheating chamber (61).

5. The gas stove according to claim 4, characterized in that: A transition chamber (64) is also provided in the preheating pot rack (6), and the transition chamber (64) is located between the preheating chamber (61) and the heat preservation chamber (63).

6. The gas stove according to claim 5, characterized in that: The volume of the transition chamber (64) is smaller than the volume of the heat preservation chamber (63), and the volume of the transition chamber (64) is smaller than the volume of the preheating chamber (61).

7. The gas stove according to claim 2, characterized in that: The gas stove further comprises a water receiving tray (8) arranged below the preheating pot rack (6), and the air inlet pipe (71) is passed through the water receiving tray (8); and / or, The air inlet pipe (71) is in contact with the outer wall of the burner base (2), and the air inlet pipe (71) is in contact with the outer wall of the ejector pipe (1).

8. The gas stove according to claim 2, characterized in that: The preheating chamber (61) is provided with a plurality of air inlets (62), and the plurality of air inlets (62) are evenly distributed along the circumferential direction of the preheating chamber (61).

9. The gas stove according to any one of claims 1 to 8, characterized in that: The blower (5) also has a second air inlet (53), and the second air inlet (53) is used to input air at normal temperature.

10. The gas stove according to claim 9, characterized in that: The second air inlet (53) surrounds the outer periphery of the first air inlet (51), and the center line of the second air inlet (53) coincides with the center line of the first air inlet (51).

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