Combustor and gas stove

Abstract

The utility model discloses a burner and a gas stove. The combustor is connected with an oxygen guide pipe, the combustor comprises a furnace end, and the furnace end comprises a secondary oxygen circulation cavity, a secondary oxygen inlet and a secondary oxygen outlet; the secondary oxygen inlet is formed in the secondary oxygen circulation cavity, communicates with one end of the oxygen guide pipe and is used for conveying oxygen corresponding to the amount of secondary oxygen to be supplemented into the secondary oxygen circulation cavity; the secondary oxygen outlet is formed in the inner side of the secondary oxygen circulation cavity and used for conveying oxygen with the secondary oxygen amount to be supplemented to inner ring flames and outer ring flames of the combustor. According to the secondary oxygen supplementing structure of the combustor, complete combustion of fuel gas is achieved, and flame uniformity can be guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas -cooker technical field especially relates to a burner and gas -cooker. BACKGROUND

[0002] For energy conservation and emission reduction and high energy efficiency conversion, the research of high-power and high-energy efficiency burner is the development direction of gas -cooker technology. Although the oxygen -enrichment technology is widely used in gas water heater products, how to use it in household gas -cooker products is still in the research stage. The main reason is that technical problems such as ignition problem, flame stability and flame uniformity have not been solved.

[0003] The existing household gas -cooker generally adopts double-ring fire burner structure. When the fire is improved, the oxygen supply is insufficient during combustion, and yellow flame, backfire and other abnormalities are prone to occur. In order to solve the above problems, a fan is usually added near the burner to forcibly enrich oxygen. However, due to the poor control precision of air volume, flame separation phenomenon may occur when the cold state or gas pressure is too large, thereby affecting the normal use of users. In addition, for ordinary gas -cookers, the gas flow of the gas distribution disc on the burner is not the same, which leads to uneven flame, and thus the flame in the whole burner area is uneven, and the part with long flame appears CO content exceeding the standard and yellow flame phenomenon, which not only wastes gas, but also pollutes the environment and harms the health of users. SUMMARY

[0004] The utility model provides a kind of burner and gas -cooker to solve the oxygen supply insufficient when the current gas -cooker burns, and yellow flame, backfire and other abnormal problems are prone to occur.

[0005] According to an aspect of the utility model, a burner is provided, which is connected with an oxygen guide pipe. The burner includes a burner head, which includes a secondary oxygen flow passage, a secondary oxygen inlet and a secondary oxygen outlet. The secondary oxygen inlet is arranged in the secondary oxygen flow passage and communicates with one end of the oxygen guide pipe, for conveying the oxygen corresponding to the secondary oxygen amount to be supplemented into the secondary oxygen flow passage. The secondary oxygen outlet is arranged inside the secondary oxygen flow passage, for conveying the oxygen of the secondary oxygen amount to be supplemented to the inner ring flame and the outer ring flame of the burner.

[0006] Optionally, a plurality of secondary oxygen outlets are arranged inside the secondary oxygen flow passage.

[0007] Optionally, the burner head further includes an outer ring ejector pipe, an inner ring ejector pipe, an outer ring mixing chamber communicating with the outer ring ejector pipe and an inner ring mixing chamber communicating with the inner ring ejector pipe.

[0008] The secondary oxygen flow passage is arranged between the outer ring mixing cavity and the inner ring mixing cavity.

[0009] Optionally, the secondary oxygen flow passage is arranged with the secondary oxygen outlets at the side of the inner ring mixing cavity at equal intervals.

[0010] Optionally, an angle between the outlet direction of the secondary oxygen outlet and the horizontal direction is set to be in a range of 30 degrees to 60 degrees.

[0011] Optionally, the secondary oxygen outlet is in a shape of one or a combination of a circle, a square, a rectangle, and a special shape.

[0012] Optionally, the other end of the oxygen guide pipe is in communication with an oxygen generator, and the oxygen generator is used to provide the secondary oxygen.

[0013] Optionally, the burner further comprises a temperature sensing module, which is used to acquire a surface temperature of the burner head, and determine the secondary oxygen based on the surface temperature.

[0014] According to another aspect of the present application, a gas stove is provided, which comprises the burner of any of the embodiments of the present application.

[0015] Optionally, the gas stove further comprises a fire power control valve and a controller, the fire power control valve is connected with the controller, and the fire power control valve is used to output a current fire power value, so that the controller provides the secondary oxygen for the burner according to the current fire power value.

[0016] The larger the fire power of the gas stove is, the more secondary oxygen needs to be supplemented, but the structure of the burner head is limited by the space size, and the secondary oxygen passage cannot be too large, and the larger the secondary oxygen passage is, the greater the energy loss is, and the flame burning needs oxygen supplement, and the larger the fire power is, the more oxygen needs to be supplemented. The technical scheme of the embodiment of the present application realizes the provision of sufficient secondary oxygen by the secondary oxygen flow passage arranged in the burner, the secondary oxygen flow passage is located between the outer ring mixing cavity and the inner ring mixing cavity, and is provided with the secondary oxygen inlet in communication with the oxygen guide pipe, the inner side of the secondary oxygen flow passage is provided with a plurality of secondary oxygen outlets, the oxygen is supplemented to the inner ring flame and the outer ring flame, the secondary oxygen outlet is at a certain angle with the horizontal direction, the oxygen is supplemented upward, the other end of the oxygen guide pipe is in communication with the oxygen generator, so that when the oxygen generator works, the oxygen can be continuously supplied to the burner, and the flame of the gas stove is continuously and stably burned.

[0017] It should be understood that the content described in this part is not intended to identify key or important features of the embodiments of the present application, nor is it used to limit the scope of the present application. Other features of the present application will become apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0019] Figure 1 is a structural schematic diagram of a burner including a furnace head according to an embodiment of the present application;

[0020] Figure 2 is a cross-sectional schematic diagram of a burner including a furnace head according to an embodiment of the present application;

[0021] Figure 3 is a structural explosion schematic diagram of a burner according to an embodiment of the present application;

[0022] Figure 4 is a structural schematic diagram of a gas stove according to an embodiment of the present application;

[0023] Figure 5 is a partial structural schematic diagram of a gas stove according to an embodiment of the present application;

[0024] Figure 6 is a structural schematic diagram of a firepower gear control valve in a gas stove according to an embodiment of the present application. DETAILED DESCRIPTION

[0025] In order to make those skilled in the art better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should be within the scope of protection of the present application.

[0026] Figure 1 is a structural schematic diagram of a burner including a furnace head according to an embodiment of the present application, Figure 2The utility model discloses a kind of burner including the cross section schematic diagram of furnace end provided in the embodiment, the embodiment can be applicable to timely secondary oxygen supplement for the burner of gas stove, so that gas burns completely and flame is uniform, the burner can be configured in various types of gas stove.

[0027] The burner is connected with oxygen gas guide pipe, as shown in Figure 1 And Figure 2 The furnace end includes secondary oxygen flow-through cavity 5015, secondary oxygen inlet 5016 and secondary oxygen outlet 5017;Secondary oxygen inlet 5016 is arranged in secondary oxygen flow-through cavity 5015, and is communicated with one end of oxygen gas guide pipe, for transporting oxygen corresponding to the amount of secondary oxygen to be supplemented into secondary oxygen flow-through cavity 5015;Secondary oxygen outlet 5017 is arranged inside secondary oxygen flow-through cavity 5015, for transporting oxygen corresponding to the amount of secondary oxygen to be supplemented to inner ring flame and outer ring flame of the burner.

[0028] Continue to refer to Figure 1 And 2 As shown in order to ensure that gas burns completely, and can guarantee that flame uniformity, secondary oxygen flow-through cavity 5015 inside is provided with a plurality of secondary oxygen outlet 5017, the number of specifically arranged secondary oxygen outlet 5017 is not specially limited, that is, a plurality of secondary oxygen outlet 5017 can be evenly and equally spaced in secondary oxygen flow-through cavity 5015, or can be non-equally spaced according to actual oxygen delivery demand. Optionally, four, six or eight or the like number of secondary oxygen outlet 5017 is symmetrically arranged inside secondary oxygen flow-through cavity 5015.

[0029] Continue to refer to Figure 1 And 2 As shown, the furnace end further includes outer ring ejection pipe 5011, inner ring ejection pipe 5012, outer ring mixing cavity 5013 communicated with outer ring ejection pipe 5011 and inner ring mixing cavity 5014 communicated with inner ring ejection pipe 5012, secondary oxygen flow-through cavity 5015 is arranged between outer ring mixing cavity 5013 and inner ring mixing cavity 5014. On the basis, secondary oxygen outlet 5017 is equally spaced on the side of secondary oxygen flow-through cavity 5015 towards inner ring mixing cavity 5014, or secondary oxygen outlet 5017 can be irregularly spaced, and the embodiment does not make any limitation to this.

[0030] Based on the above, to ensure a continuous supply of oxygen to the burner from the secondary oxygen circulation chamber 5015, the outlet direction of the secondary oxygen outlet 5017 is at a certain angle to the horizontal direction. This facilitates upward oxygen replenishment and ensures the secondary oxygen replenishment effect. Therefore, to avoid the angle between the outlet direction of the secondary oxygen outlet 5017 and the horizontal direction being too small, which would prevent the secondary oxygen replenishment effect from being achieved, and to avoid the angle being too large, which would cause flame lift-off, the angle between the outlet direction of the secondary oxygen outlet 5017 and the horizontal direction can optionally be set within the range of 30 degrees to 60 degrees.

[0031] Based on the above, the shape of the secondary oxygen outlet 5017 can be one or more combinations of circles, squares, rectangles, or irregular shapes. For example, the secondary oxygen outlets 5017, all circular in shape, are evenly spaced on the side of the secondary oxygen flow cavity 5015 facing the inner ring mixing cavity 5014. Alternatively, circular and square secondary oxygen outlets 5017 can be alternately arranged on the side of the secondary oxygen flow cavity 5015 facing the inner ring mixing cavity 5014. It is understood that more combinations of shapes can be chosen and interspersed; this embodiment does not impose any limitations on this.

[0032] Further reading continues Figure 1 and 2 As shown, the burner also includes a temperature sensing module 11, which is used to acquire the surface temperature of the burner head, determine the amount of secondary oxygen to be replenished based on the surface temperature, and then deliver the oxygen to be replenished through the secondary oxygen inlet 5016 to the secondary oxygen flow chamber 5015, and control the secondary oxygen outlet 5017 to deliver the oxygen to be replenished to the inner and outer ring flames.

[0033] The working state of the burner is determined by the surface temperature of the burner head detected by the temperature sensing module 11. The secondary oxygen supply of the burner is controlled in combination with the working state of the burner. The temperature sensing module 11 can be implemented by existing temperature sensors or by other devices with temperature detection functions. This embodiment does not impose any special restrictions on this.

[0034] As is known, the higher the firepower of the gas stove and the higher the surface temperature of the burner head, the more secondary oxygen is required. Therefore, based on the surface temperature fed back by the temperature sensing module 11, the amount of secondary oxygen to be replenished is selected accordingly. The relationship between the surface temperature of the burner head and the amount of secondary oxygen to be replenished can be preset based on experience or by other means. This embodiment does not impose any restrictions on this.

[0035] Further, the other end of the oxygen guide pipe is communicated with an oxygen machine, and the oxygen machine can continuously provide oxygen to the combustor when working, that is, the oxygen machine can provide the oxygen to be supplemented to the combustor.

[0036] On the basis of the above embodiment, Figure 3 The combustor structure explosion schematic diagram provided by the embodiment of the utility model, continue to see Figure 1 、 Figure 2 and Figure 3 As shown in the figure, the combustor further comprises an inner ring nozzle 506 and an outer ring nozzle 507, the inner ring nozzle 506 is connected with the inner ring ejection pipe 5012, and the outer ring nozzle 507 is connected with the outer ring ejection pipe 5013; the gas enters the inner ring mixing chamber 5014 through the inner ring ejection pipe 5012 via the inner ring nozzle 506 to form an inner ring flame; the gas enters the outer ring mixing chamber 5013 through the outer ring ejection pipe 5011 via the outer ring nozzle 507 to form an outer ring flame.

[0037] Among them, the inner ring nozzle 506 is connected with the inner ring ejection pipe 5012 through a gas distribution seat, the outer ring nozzle 507 is connected with the outer ring ejection pipe 5013 through a gas distribution seat, other existing means can also be used for connection, and the embodiment does not make any limitation in this aspect.

[0038] Specifically, the gas enters the inner ring ejection pipe 5012 via the inner ring nozzle 506, reaches the inner ring mixing chamber 5014, enters the outer ring ejection pipe 5011 via the outer ring nozzle 507, reaches the outer ring mixing chamber 5013, and forms the inner ring flame and the outer ring flame to start combustion; because the flame combustion needs oxygen supplement, and the firepower is large, more oxygen supplement is needed to maintain the continuous and stable combustion of the flame, so the secondary oxygen flow cavity 5015 arranged in the combustor is provided to provide sufficient secondary oxygen.

[0039] On the basis of the above embodiment, continue to see Figure 1 、 Figure 2 and Figure 3 As shown in the figure, the combustor further comprises a copper core 502 and a copper cover 503, the copper core 502 is arranged on the inner ring mixing chamber, and the copper cover 503 is arranged on the outer ring mixing chamber 5013; the gas enters the inner ring mixing chamber 5014 through the inner ring ejection pipe 5012 via the inner ring nozzle 506, reaches the copper core 502 to form an inner ring flame; the gas enters the outer ring mixing chamber 5013 through the outer ring ejection pipe 5011 via the outer ring nozzle 507, reaches the copper cover 503 to form an outer ring flame.

[0040] As known, the gas enters the furnace head 501 through the inner ring nozzle 506 and the outer ring nozzle 507, a part of oxygen is brought into the furnace head 501 through the inner ring nozzle 506 and the outer ring nozzle 507 and the throat of the furnace head 501, and mixed gas is formed in the cavity of the furnace head 501, and finally, the inner ring flame and the outer ring flame are formed at the fire cover part (the fire cover part includes the copper core 502 and the copper cover 503) and are combusted, and part of the secondary oxygen is needed for combustion when the inner ring flame and the outer ring flame are combusted, in order to realize rapid stir-frying, the gas stove power is generally above 5.0kW, the greater the power, the more oxygen is needed, in order to ensure that the combustion can be continuously and stably, the furnace head structure for rapidly supplementing the secondary oxygen is provided in the embodiment.

[0041] Based on the same utility model concept, Figure 4 A structural schematic diagram of a gas stove is provided in the embodiment of the utility model, referring to Figure 4 , the gas stove comprises the burner 5 in any embodiment of the utility model. Referring to Figure 4 , the gas stove further comprises a gas guide pipe 4, a controller 6, an oxygen generator 7 and an oxygen guide pipe 8; the gas guide pipe is connected with the burner 5 and is used for conveying gas to the burner 5; the oxygen generator 7 is connected with the burner 5 through the oxygen guide pipe 8 and is used for conveying oxygen to the burner 5; the controller 6 is connected with the oxygen generator 7 and is used for controlling the oxygen generator 7 to work.

[0042] Referring to Figure 4 , the gas stove further comprises a base plate 1, the controller 6 and a temperature sensing module 11 and the like, and the temperature sensing module 11 can be arranged on the inner ring injection pipe of the furnace head of the burner.

[0043] Figure 5 A partial structural schematic diagram of a gas stove is provided in the embodiment of the utility model, and referring to Figure 5 , the gas stove further comprises a face plate 9, and the face plate 9 can be provided with a display screen at any position, the display screen can display related data of the gas stove, for example, the working state of the oxygen generator 7 and the information such as the amount of secondary oxygen to be supplemented of the burner 5, and can also provide the gas stove control functions such as start-stop control and power adjustment of the gas stove, and the size and the arrangement position of the display screen and the like can be selected and arranged according to requirements, and the embodiment does not make any limitation here.

[0044] Further, referring to Figure 5 , the gas stove further comprises a pot rack 10, and the specific form, material and quantity of the pot rack 10 can be selected and arranged, and the embodiment does not make any limitation.

[0045] Figure 6 A structural schematic diagram of a power gear control valve in a gas stove is provided in the embodiment of the utility model, and referring to Figure 4 , Figure 5 andFigure 6 As shown, the gas stove further comprises a fire power level control valve 3 and a controller 6, the fire power level control valve 3 is connected with the controller 6, the fire power level control valve 3 is used to output a current fire power level value, so that the controller 6 provides the oxygen with an output secondary oxygen supplementing amount for the burner 5 according to the current fire power level value.

[0046] Wherein, the fire power level control valve 3 can output a fire power level value as a large fire power level, a medium fire power level and an off fire power level, and the current fire power level value is the large fire power level, the medium fire power level or the off fire power level.

[0047] Specifically, the controller 6 outputs a corresponding instruction according to the current fire power level value, the gas enters the gas inlet pipe 2, the gas stove is controlled by the fire power level control valve 3, the gas enters the burner 5 through the gas guide pipe 4, the flame combustion is realized at the head of the burner 5, the rotation and the closing of the oxygen drum machine 7 are further controlled, and the rotation speed of the oxygen drum machine 7 can be controlled, the oxygen drum machine 7 provides the oxygen with a suitable secondary oxygen supplementing amount for the burner 5, the oxygen enters the burner 5 through the oxygen guide pipe 8, so as to provide sufficient oxygen for the gas combustion, and the stable and sufficient combustion of the flame is ensured.

[0048] In the embodiment, the temperature sensing module 11 can monitor the working state of the burner 5, whether the working state of the burner 5 is cold or hot, and feedback to the controller 6, and then the controller 6 matches the output corresponding fan rotation speed of the oxygen drum machine 7 according to the current fire power level value output by the fire power level control valve 3, that is, the oxygen drum machine 7 outputs the oxygen with a secondary oxygen supplementing amount.

[0049] The above specific embodiments do not constitute a limitation on the protection scope of the present application. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A burner, characterized in that, The burner is connected to an oxygen supply pipe. The burner includes a burner head, which includes a secondary oxygen flow chamber, a secondary oxygen inlet, and a secondary oxygen outlet. The secondary oxygen inlet is located in the secondary oxygen flow chamber and is connected to one end of the oxygen supply pipe, for supplying oxygen corresponding to the amount of secondary oxygen to be replenished into the secondary oxygen flow chamber. The secondary oxygen outlet is located inside the secondary oxygen flow chamber and is used to supply the amount of secondary oxygen to be replenished to the inner and outer ring flames of the burner.

2. The burner according to claim 1, characterized in that, The secondary oxygen flow chamber is provided with multiple secondary oxygen outlets on its inner side.

3. The burner according to claim 1, characterized in that, The furnace head also includes an outer ring ejector tube, an inner ring ejector tube, an outer ring mixing chamber connected to the outer ring ejector tube, and an inner ring mixing chamber connected to the inner ring ejector tube. The secondary oxygen flow chamber is located between the outer ring mixing chamber and the inner ring mixing chamber.

4. The burner according to claim 3, characterized in that, The secondary oxygen flow chamber has secondary oxygen outlets spaced at equal intervals on the side facing the inner ring mixing chamber.

5. The burner according to claim 1, characterized in that, The angle between the outlet direction of the secondary oxygen outlet and the horizontal direction is set to a range of 30 degrees to 60 degrees.

6. The burner according to claim 1, characterized in that, The shape of the secondary oxygen outlet is one or more combinations of circles, squares, rectangles, or irregular shapes.

7. The burner according to claim 1, characterized in that, The other end of the oxygen delivery tube is connected to the oxygen blower, which is used to provide the amount of oxygen to be replenished.

8. The burner according to claim 1, characterized in that, The burner also includes a temperature sensing module, which is used to acquire the surface temperature of the burner head to determine the amount of secondary oxygen to be replenished based on the surface temperature.

9. A gas stove, characterized in that, The gas stove includes the burner according to any one of claims 1-8.

10. The gas stove according to claim 9, characterized in that, The gas stove also includes a fire level control valve and a controller. The fire level control valve is connected to the controller and is used to output the current fire level value so that the controller provides the burner with the amount of secondary oxygen to be replenished according to the current fire level value.

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