Multi-zone independent combustion and mixed heat supply combustion device and oven

Abstract

The utility model discloses a multi-zone independent combustion and mixed heat supply combustion device and an oven. All fuels are independently combusted in a first combustion chamber and a second combustion chamber; and when airflow in the air duct flows through the first combustion chamber and the second combustion chamber through the blower device, heat generated by combustion is taken away and flows out from the hot flow outlet to realize mixed heat supply.

Description

Technical Field

[0001] The utility model belongs to the field of ovens, and in particular relates to a combustion device and an oven with multi-zone independent combustion and mixed heating. Background Art

[0002] An oven is a device that uses hot air to bake and cook food. It is usually a closed or semi-closed structure. Traditional ovens use wood or coal for heating. Modern ovens are multifunctional and use electric or gas heating.

[0003] Traditional ovens usually have a combustion chamber set up under the grill, so that fuels such as wood and coal are placed in the combustion chamber for combustion, and the heat flow generated by the fuel combustion rises to bake the food on the grill above. Usually, multiple fuels are used at the same time, and multiple fuels have two combustion modes:

[0004] The first is to burn the fuels in a mixed state, so that each fuel is burned in a concentrated manner, and the heat flow generated by each fuel is in a completely mixed state, and the food on the upper grill is grilled by the completely mixed heat flow.

[0005] The second method is to burn each fuel separately at a smaller distance, so that each fuel burns in its own area, and the heat flux generated by each fuel is partially mixed during its respective rising process, and the food on the upper grill is grilled by multiple unmixed heat fluxes and partially mixed heat fluxes.

[0006] The shortcomings of the first combustion mode mentioned above are: 1. Different fuels have different cleaning methods, and the fuel in the mixed state needs to be sorted again during subsequent cleaning, which makes cleaning inconvenient; 2. There is only one combustion state in the mixed state, so it is impossible to judge the combustion conditions of different fuels; 3. The mixed fuels affect each other during combustion, and the effects of different mixing ratios are different, which leads to unstable combustion states of each fuel.

[0007] The disadvantage of the second combustion mode is that different fuels have different heat flow states, and the heat flows of different states generated by separate combustion result in uneven heat supply to the upper grill. Utility Model Content

[0008] In view of the deficiencies in the prior art, the purpose of the present utility model is to provide a combustion device and an oven with multi-zone independent combustion and mixed heating, in which each fuel is independently burned in a first combustion chamber and a second combustion chamber, and a blower device is used to make the air flow in the air duct flow through the first combustion chamber and the second combustion chamber, taking away the heat generated by the combustion and flowing out from the heat flow outlet to realize mixed heating.

[0009] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0010] A combustion device with multi-zone independent combustion and mixed heating, characterized in that it includes: a combustion bin, wherein an air duct is arranged in the combustion bin, wherein a first combustion chamber and a second combustion chamber are formed in the air duct, wherein the first combustion chamber and the second combustion chamber are used for fuel combustion to be heated, and a heat flow outlet is formed at the end of the air duct; an air blowing device, wherein the air blowing device works to blow air flow into the air duct, and the air flow flows through the first combustion chamber and the second combustion chamber in turn to be heated to form hot air and is discharged from the heat flow outlet.

[0011] The utility model is further configured as follows: the temperature of the first combustion chamber in the combustion state is lower than the temperature of the second combustion chamber in the combustion state; the silo size of the first combustion chamber is smaller than the silo size of the second combustion chamber; and / or the fuel holding density of the first combustion chamber is smaller than the fuel holding density of the second combustion chamber; and / or the combustion calorific value of the combustible placed in the first combustion chamber is lower than the combustion calorific value of the combustible placed in the second combustion chamber.

[0012] The utility model is further configured as follows: the combustion chamber is provided with a first upper chamber above the first combustion chamber, and a second upper chamber is provided above the second combustion chamber, and the first upper chamber and the second upper chamber are separated; the first upper chamber and the second upper chamber are in a sealed structure so that the airflow cannot be discharged through the first upper chamber and the second upper chamber.

[0013] The utility model is further configured as follows: the air duct comprises a first air duct, a second air duct and a third air duct which are connected in sequence, the first air duct and the third air duct are arranged vertically, and the second air duct is arranged horizontally, the blowing device blows airflow into the first air duct, the heat flow outlet is arranged near the end of the third air duct, the first combustion chamber and the second combustion chamber are respectively formed in the second air duct and the first combustion chamber is located on the side of the second combustion chamber facing the first air duct; the first upper cavity and the second upper cavity are formed above the second air duct.

[0014] The utility model is further configured as follows: the first air duct is located at a side of the first upper cavity away from the second upper cavity, and the second air duct is located at a side of the second upper cavity away from the first upper cavity.

[0015] The utility model is further configured as follows: a chamber cover for opening and closing the first upper chamber and the second upper chamber is provided on the combustion chamber, and the chamber cover is opened to replenish fuel into the first upper chamber and the second upper chamber.

[0016] The utility model is further configured as follows: it also includes a combustion box, the combustion box includes a first fuel bin located in the first combustion chamber and a second fuel bin located in the second combustion chamber; the volume of the first fuel bin is 20%-50% of the volume of the second fuel bin, or a spacer is provided in the first fuel bin, or the volume of the first fuel bin is the same as the volume of the second fuel bin; a second partition for separating the first fuel bin and the second fuel bin is provided in the combustion box; a first connecting hole is provided on the peripheral wall of the combustion box, and a third connecting hole is provided on the second partition; and / or a second connecting hole is provided on the bottom wall of the combustion box.

[0017] The utility model is further configured as follows: an ash box is detachably provided in the second air duct, and the ash box is fitted on the combustion chamber in a pull-out manner; and a combustion-supporting component is provided on the upper end of the ash box.

[0018] The utility model is further configured as follows: the upper ends of the first air duct, the first upper cavity and the second upper cavity are flush, and the bin cover is placed on the upper ends of the first air duct, the first upper cavity and the second upper cavity; the height of the first upper cavity and the second upper cavity is 3-10 times the height of the second air duct.

[0019] By adopting the above technical scheme, two different fuels, such as wood particles and charcoal, can be placed in the first combustion chamber and the second combustion chamber for combustion, so that a large amount of heat is generated by combustion in the first combustion chamber and the second combustion chamber, and in the combustion process, the air flow in the air duct flows through the first combustion chamber and the second combustion chamber in sequence through the operation of the blast device to take away the hot air in the first combustion chamber and the second combustion chamber, and the hot air is mixed in the process of flowing to the hot flow outlet to ensure that the temperature of the air flow is more uniform, and finally the mixed air flow flows out through the hot flow outlet for heat supply. Among them, since the fuels are burned independently, not only can the residual fuels after combustion be cleaned up separately without classification, making cleaning more convenient, but also the combustion of each fuel can be observed separately to more accurately judge the combustion status of each fuel, and the fuels do not interfere with each other to ensure that the combustion of each fuel is more stable. In addition, since different fuels can be placed at the same time, the combustion of wood particles produces the fragrance of fruit wood and the combustion of charcoal produces the taste of charcoal grilling. The two flavors are evenly mixed to evenly grill the grilled food with multiple flavors.

[0020] A baking oven comprises a baking oven rack and the above-mentioned combustion device for independent combustion in multiple zones and mixed heating, wherein the combustion device is arranged on the baking oven rack for heating; a baking cavity is arranged on the baking oven rack, and a heat flow outlet of the combustion device is connected to the baking cavity; or a heating cavity and a baking net located above the heating cavity are arranged on the baking oven rack, and a heat flow outlet of the combustion device is connected to the heating cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 This is an assembly diagram of the first embodiment of the utility model;

[0023] Figure 2 It is a cross-sectional view of the first embodiment of the utility model;

[0024] Figure 3 This is an exploded view of the first embodiment of the utility model;

[0025] Figure 4 It is a schematic diagram of a part of the structure of an embodiment of the utility model;

[0026] Figure 5 This is a schematic diagram of a combustion box in Embodiment 1 of the present utility model;

[0027] Figure 6 This is a schematic diagram of a bin cover in Embodiment 1 of the present utility model;

[0028] Figure 7 This is a schematic diagram of the combustion-supporting component in the first embodiment of the utility model;

[0029] Figure 8 This is an assembly diagram of the second embodiment of the present utility model;

[0030] Fig. 9 It is a cross-sectional view of the second embodiment of the utility model;

[0031] Fig.10 It is a cross-sectional view of the third embodiment of the present utility model.

[0032] Label: 1. Combustion chamber;

[0033] 11. Air duct; 12. Combustion chamber; 13. Extension section; 14. Disassembly and assembly port; 15. Heat conducting part;

[0034] 111, first air duct; 112, second air duct; 113, third air duct; 119, heat flow outlet; 121, first combustion chamber; 122, second combustion chamber; 123, first upper cavity; 124, second upper cavity;

[0035] 2. Blowing device;

[0036] 21. Mounting bracket; 22. Fan motor;

[0037] 31. first partition; 32. second partition; 33. first bending guide rail; 34. first sliding portion; 35. second bending guide rail; 36. second sliding portion;

[0038] 4. Bin cover;

[0039] 5. Combustion box;

[0040] 51. First fuel tank; 52. Second fuel tank;

[0041] 61, first connecting hole; 62, second connecting hole; 63, third connecting hole; 64, fourth connecting hole;

[0042] 7. Gray box;

[0043] 8. Combustion-supporting parts;

[0044] 81. Support bottom; 82. Limiting side wall; 83. Hanging part; 84. Limiting part; 85. Combustion-supporting chamber;

[0045] 9. Furnace rack;

[0046] 91. Braising and roasting chamber; 92. Heating chamber; 93. Box cover; 94. Grid; 95. Support rod; 96. Grilling net. DETAILED DESCRIPTION

[0047] In order to enable those skilled in the art to better understand the present invention, and thus to more clearly define the scope of protection claimed by the present invention, the present invention is described in detail below with respect to certain specific embodiments of the present invention. It should be noted that the following are only certain specific implementation methods of the present invention, which are only part of the embodiments of the present invention, wherein the specific and direct description of the relevant structures is only for the convenience of understanding the present invention, and each specific feature does not naturally and directly limit the scope of implementation of the present invention. The conventional selections and substitutions made by those skilled in the art under the guidance of the present invention shall be deemed to be within the scope of protection claimed by the present invention.

[0048] Embodiment 1:

[0049] like Figure 1-Figure 7 As shown, the utility model discloses a combustion device with multi-zone independent combustion and mixed heating, comprising:

[0050] The combustion chamber 1 is formed by riveting, welding, etc. after a plurality of plates are assembled, and the outer peripheral shape of the combustion chamber 1 is a rectangular parallelepiped as a whole, wherein an air duct 11 and a first combustion chamber 121 and a second combustion chamber 122 are provided in the combustion chamber 1, and the first combustion chamber 121 and the second combustion chamber 122 are provided for fuel combustion to be heated, and in addition, a heat flow outlet 119 is provided at the end of the air duct 11;

[0051] The air blowing device 2 works to blow air into the air duct 11 , and the air flow flows through the first combustion chamber 121 and the second combustion chamber 122 in sequence to be heated to form hot air and discharged from the hot flow outlet 119 .

[0052] Therefore, two different fuels, such as wood particles and charcoal, can be placed in the first combustion chamber 121 and the second combustion chamber 122 for combustion, so that a large amount of heat is generated by combustion in the first combustion chamber 121 and the second combustion chamber 122, and during the combustion process, the airflow in the air duct 11 flows through the first combustion chamber 121 and the second combustion chamber 122 in sequence through the operation of the air blowing device 2 to take away the hot air in the first combustion chamber 121 and the second combustion chamber 122, and the hot air is mixed in the process of flowing to the hot flow outlet 119 to ensure that the temperature of the airflow is more uniform, and finally the mixed airflow flows out through the hot flow outlet 119 for heating. Among them, since the fuels are burned independently, not only can the residual fuels after combustion be cleaned up separately without classification, making cleaning more convenient, but also the combustion of each fuel can be observed separately to more accurately judge the combustion status of each fuel, and the fuels do not interfere with each other to ensure that the combustion of each fuel is more stable. In addition, since different fuels can be placed at the same time, for example, the burning of wood particles produces the aroma of fruit wood, and the burning of charcoal produces the smell of charcoal grilling. The two flavors are evenly mixed to evenly grill the grilled food with multiple flavors.

[0053] Preferably, the temperature of the first combustion chamber 121 in the combustion state is lower than the temperature of the second combustion chamber 122 in the combustion state. Therefore, the airflow flowing through the first combustion chamber 121 and the second combustion chamber 122 is gradually heated up, so that the temperature gradient is positive and the heat energy transfer efficiency is higher.

[0054] Among them, in order to achieve that the temperature of the first combustion chamber 121 in the combustion state is lower than the temperature of the second combustion chamber 122 in the combustion state, the following methods can be used: the first method is to set the size of the first combustion chamber 121 (i.e., the first fuel bin 51 described later) as shown in the figure to be smaller than the size of the second combustion chamber 122 (i.e., the first fuel bin 52 described later), so that the fuel that can be accommodated in the first combustion chamber 121 is less than the fuel that can be accommodated in the second combustion chamber 122, so that the second combustion chamber 122 burns to generate more heat so that the temperature of the second combustion chamber 122 in the combustion state is higher than that of the first combustion chamber 121. The first combustion chamber 121 has a temperature; the second is that the fuel placed in the first combustion chamber 121 is less than the fuel placed in the first combustion chamber 122, so that the second combustion chamber 122 generates more heat during combustion, so that the temperature of the second combustion chamber 122 under combustion is higher than the temperature of the first combustion chamber 121; the third is that the combustion calorific value of the combustion material placed in the first combustion chamber 121 is lower than the combustion calorific value of the combustion material placed in the second combustion chamber 122, so that the second combustion chamber 122 generates more heat during combustion, so that the temperature of the second combustion chamber 122 under combustion is higher than the temperature of the first combustion chamber 121. The above three methods can be used simultaneously, or any one or two can be selected.

[0055] Specifically, the blowing device 2 is a mounting bracket 21 and a fan motor 22 arranged on the mounting bracket 21. The mounting bracket 21 is installed on the combustion chamber 1, and the fan motor 22 works to form an airflow.

[0056] In other embodiments, 1 to 3 separated combustion chambers are arranged after the second combustion chamber 121 to achieve more partitions, which are arranged specifically according to usage requirements.

[0057] Specifically, in this embodiment, the first combustion chamber 121 and the second combustion chamber 122 are arranged in a left-right arrangement so that the airflow in the air duct 11 flows through the first combustion chamber 121 and the second combustion chamber 122 in sequence from left to right.

[0058] In addition, the combustion chamber 1 is provided with a first upper chamber 123 located above the first combustion chamber 121, and a second upper chamber 124 is provided above the second combustion chamber 122. The first upper chamber 123 and the second upper chamber 124 are separated by a first partition 31; in addition, the first upper chamber 123 and the second upper chamber 124 are in a sealed structure so that the airflow cannot be discharged through the first upper chamber 123 and the second upper chamber 124.

[0059] Therefore, fuel can be added to the first combustion chamber 121 and the second combustion chamber 122 by opening the first upper chamber 123 and the second upper chamber 124, and under the action of the first partition 31, the fuel added to the first combustion chamber 121 and the fuel added to the second combustion chamber 122 cannot be mixed with each other to prevent the mixed materials from burning. In addition, the arrangement of the first upper chamber 123 and the second upper chamber 124 can increase the distance from the first combustion chamber 121 to the fuel adding position and the distance from the second combustion chamber 122 to the fuel adding position to achieve safer fuel addition, and the space of the first upper chamber 123 and the second upper chamber 124 can be used to add more fuel or put in long strips of firewood.

[0060] Among them, the air duct 11 in this embodiment includes a first air duct 111 on the left side, a second air duct 112 on the lower side and a third air duct 113 on the right side. The first air duct 111 and the third air duct 113 are both vertically extended, and the lower end of the first air duct 111 is connected to the left end of the second air duct 112, and the lower end of the third air duct 113 is connected to the right end of the second air duct 112, so that the air duct 11 as a whole has a U-shaped structure.

[0061] In addition, the first combustion chamber 121 and the second combustion chamber 122 are arranged in the second air duct 112, and correspondingly, the first upper cavity 123 and the second upper cavity 124 are located between the first air duct 111 and the third air duct 113, and the left side of the first upper cavity 123 is attached to the first air duct 111, and the right side of the second upper cavity 124 is attached to the third air duct 113.

[0062] In addition, the air blowing device 2 is located above the left side of the first air duct 111 so that the air blowing device 2 blows air into the first air duct 111 , and the hot flow outlet 119 is located at the upper end of the third air duct 113 .

[0063] Therefore, 1. The blowing device 2 works to blow the airflow outside the combustion chamber 1 into the first air duct 111, and the airflow flows downward in the first air duct 111 to the second air duct 112, and during the flow of the airflow, the first upper chamber 123 conducts heat to the left to preheat the airflow; 2. The airflow entering the second air duct 112 flows rightward and passes through the first combustion chamber 121 and the second combustion chamber 122 in sequence, and the airflow takes away the heat generated by the combustion in the first combustion chamber 121 and the second combustion chamber 122 through heat conduction, while supplementing oxygen for the first combustion chamber 121 and the second combustion chamber 122 to ensure more complete combustion of the fuel, and then the heated airflow flows rightward to the third air duct 113; 3. The airflow entering the third air duct 113 flows upward to the heat flow outlet 119, and during the flow of the airflow, the second combustion chamber 122 conducts heat to the right to keep a higher temperature in the third air duct 113 to reduce the heat energy loss of the airflow, so that the temperature of the airflow flowing out from the heat flow outlet 119 is higher.

[0064] Among them, the upper ends of the first upper chamber 123 and the second upper chamber 124 in this embodiment are respectively provided with feed ports, and correspondingly, the combustion chamber 1 is located above the first upper chamber 123 and the second upper chamber 124 and is provided with a chamber cover 4 for opening and closing the feed port. The chamber cover 4 is opened to replenish fuel into the first upper chamber 123 and the second upper chamber 124 through the feed port. Specifically, the front and rear sides of the combustion chamber 1 are respectively provided with first bending guide rails 33 extending left and right, and the front and rear sides of the chamber cover 4 are provided with first sliding portions 34 adapted to the first bending guide rails 33 by a bending manner, so that the chamber cover 4 can slide left and right with the cooperation of the first sliding portion 34 and the first bending guide rail 33, and the feed port is opened by sliding to the left, and closed by sliding to the right.

[0065] Therefore, when it is necessary to add fuel, observe the combustion situation in the combustion chamber 12, or clean the combustion chamber 12, the feed inlet is opened by sliding the bin cover 4 to the left, and after the operation is completed, the feed inlet is closed by sliding the bin cover 4 to the right.

[0066] The right end of the combustion chamber 1 is provided with an extension section 13 extending upward, and the heat flow outlet 119 is arranged above the extension section 13 .

[0067] Therefore, the provision of the extension section 13 not only enables the heat outlet 119 to be better lifted upward to align with the chamber that needs to be heated, but also limits the rightward sliding of the compartment cover 4 under the limitation of the extension section 13 .

[0068] Preferably, in the present embodiment, the upper ends of the first air duct 111, the first upper cavity 123 and the second upper cavity 124 are flush, and the bin cover 4 is placed on the upper ends of the first air duct 111, the first upper cavity 123 and the second upper cavity 124; the height of the first upper cavity 123 and the second upper cavity 124 is h1, and the height of the second air duct 112 is h2, and h1 is 3-10 times of h2.

[0069] In addition, the combustion chamber 1 in this embodiment is detachably provided with a combustion box 5, which is located in the second air duct 112 and has an opening at the upper end. In addition, a second partition 32 is provided in the combustion box 5 to divide the combustion box 5 into a first fuel chamber 51 located in the first combustion chamber 121 and a second fuel chamber 52 located in the second combustion chamber 122. Therefore, the configuration of the combustion box 5 allows the fuel to be mainly concentrated in the first fuel chamber 51 and the second fuel chamber 52 in the combustion box 5 for combustion, and the second partition 32 effectively ensures the separation between the first fuel chamber 51 and the second fuel chamber 52, ensuring the independence of the combustion of each fuel. After the combustion is completed, the combustion box 5 can be disassembled to more conveniently clean the remaining fuel in the combustion box 5.

[0070] Specifically, in order to achieve that the temperature of the first combustion chamber 121 in the combustion state is lower than the temperature of the second combustion chamber 122 in the combustion state, the following methods can be used: the first is that the volume of the first fuel bin 51 is 20%-50% of the volume of the second fuel bin 52, so that the volume of the first fuel bin 51 is smaller and can accommodate less fuel; the second is that a spacer is provided in the first fuel bin 51, so that the spacer structures the first fuel bin 51, and the area available for accommodating fuel is smaller; the third is that the volume of the first fuel bin 51 is the same as the volume of the second fuel bin 52, so that fuels with different combustion calorific values ​​can be placed.

[0071] In addition, a plurality of first connecting holes 61 are respectively arranged on the front, rear, left and right peripheral walls of the combustion box 5, and correspondingly, a plurality of third connecting holes 63 are arranged on the second partition 32, so that the airflow flowing from the left side to the right of the second air duct 112 can flow through the first connecting holes 61 and the second connecting holes 62 through the first fuel bin 51 and the second fuel bin 52, and the airflow enters the first fuel bin 51 and the second fuel bin 52 for direct heating, making the heat transfer faster, and oxygen is supplied to the first fuel bin 51 and the second fuel bin 52 to ensure more complete combustion of the fuel.

[0072] In addition, a plurality of second connecting holes 62 are provided on the upper opening of the bottom wall of the combustion box 5 in the present embodiment. The second connecting holes 62 connect the first fuel bin 51 with the first combustion chamber 121 below the first fuel bin 51, and connect the second fuel bin 52 with the second combustion chamber 122 below the second fuel bin 52. Therefore, the heat in the first fuel bin 51 and the second fuel bin 52 can be directly diffused to the first combustion chamber 121 below the first fuel bin 51 and the second combustion chamber 122 below the second fuel bin 52 through the air, so that the airflow flowing through the first combustion chamber 121 below the first fuel bin 51 and the second combustion chamber 122 below the second fuel bin 52 is heated, so that the temperature of the subsequent mixed airflow is higher to improve the utilization rate of thermal energy. In addition, the second connecting holes 62 are also used for the ash produced by combustion to escape from the combustion box 5, so as to ensure that the fuel in the combustion box 5 is more completely in contact with the air to improve the combustion efficiency.

[0073] Specifically, the combustion chamber 1 in this embodiment is provided with second bending guide rails 35 extending left and right on the front and rear sides of the second air duct 112, and correspondingly, the front and rear sides of the combustion box 5 are provided with second sliding parts 36 adapted to the second bending guide rails 35 by a bending manner, so that the combustion box 5 can slide left and right through the cooperation of the second bending guide rails 35 and the second sliding part 36. In addition, a disassembly port 14 is provided on the left side of the combustion chamber 1, so that the combustion box 5 slides to the left and escapes from the disassembly port 14 to achieve disassembly, and is assembled by inserting the disassembly port 14 and aligning the second bending guide rail 35 and the second sliding part 36.

[0074] In addition, in this embodiment, an ash box 7 is detachably provided below the second air duct 112, and the ash box 7 is fitted on the combustion chamber 1 in a pull-out manner; the ash is collected below the combustion box 5 through the ash box 7, and the ash box 7 can be pulled out and disassembled from the disassembly port 14, making the cleaning of the ash more convenient.

[0075] In addition, a combustion-supporting component 8 is provided at the upper end of the ash box 7 in this embodiment, so that solid alcohol and other combustion-supporting materials can be ignited on the combustion-supporting component 8, and then the ash box 7 is inserted into the combustion chamber 1, so that the combustible materials burning below the combustion zone can efficiently support the combustion of the fuel in the combustion zone, making the combustion safer.

[0076] In addition, the combustion-supporting component 8 in this embodiment is a metal stamping component, which includes a supporting bottom 81, a limiting side wall 82 bent on the left and right sides of the supporting bottom 81, and a hanging portion 83 bent on the front and rear sides of the supporting bottom 81. In addition, two limiting portions 84 arranged front and back are punched out on the supporting bottom 81, so that a combustion-supporting cavity 85 is formed by the supporting bottom 81, the limiting side wall 82, and the limiting portion 84; therefore, the front and rear sides of the combustion-supporting component 8 are hung on the ash box 7 through the two hanging portions 83, and combustion-supporting materials can be added in the combustion-supporting cavity 85 to promote combustion.

[0077] In addition, fourth connecting holes 64 are respectively provided on the supporting bottom 81 and the limiting side wall 82, so that the combustion-supporting chamber 85 is opened in the airflow direction of the second air duct 112, and the airflow continuously supplies oxygen to the combustion-supporting material to ensure more complete combustion.

[0078] Preferably, the combustion chamber 1 in this embodiment is provided with a heat-conducting member 15 with a narrowed inner circumference at the heat flow outlet 119, so as to make the heat flow flow upward more concentratedly and quickly for heat supply.

[0079] Embodiment 2:

[0080] like Figure 8-Figure 9 As shown, a baking oven comprises a furnace frame 9 and a combustion device for independent combustion in multiple zones and mixed heating as described in the first embodiment. The combustion device is arranged in the furnace frame 9. A stewing and baking cavity 91 is arranged above the furnace frame 9. The heat flow outlet 119 of the combustion device is connected to the stewing and baking cavity 91.

[0081] Therefore, the airflow from the hot outlet 119 of the combustion device is directly introduced into the stewing and baking chamber 91 to keep the stewing and baking chamber 91 at a high temperature so as to bake the food to be baked in the stewing and baking chamber 91, and the airflow is continuously introduced into the stewing and baking chamber 91 so that the airflow in the stewing and baking chamber 91 flows quickly and mixes to achieve a uniform temperature in the stewing and baking chamber 91 so as to make the baking more uniform. In addition, since different fuels can be placed at the same time, such as the combustion of wood particles to produce the fragrance of fruit wood and the combustion of charcoal to produce the taste of charcoal grilling, the two flavors are evenly mixed and enter the stewing and baking chamber 91 with the airflow, and the airflow can evenly bake the stewed and baked food with multiple flavors while providing heat for baking.

[0082] A box cover 93 is hingedly provided on the oven rack 9, so that the box cover 93 can be placed on the oven rack 9 to close the stewing and baking cavity 91, or the stewing and baking cavity 91 can be turned over to open the stewing and baking cavity 91 for baking operation.

[0083] In addition, grids 94 are provided on the left and right sides of the stewing and roasting cavity 91, and a plurality of vertically arranged support rods 95 are provided on the grids 94, so that a plurality of roasting nets 96 can be placed to improve the roasting efficiency.

[0084] Embodiment three:

[0085] like Fig.10 As shown, a baking oven comprises a furnace frame 9 and a combustion device for independent combustion in multiple zones and mixed heating as described in the first embodiment. The combustion device is arranged in the furnace frame 9. The furnace frame 9 is provided with a heating cavity 92 above the combustion device, and a baking net 96 is arranged above the heating cavity 92. The heat flow outlet 119 of the combustion device is connected to the heating cavity 92.

[0086] Therefore, the airflow flowing out of the combustion device from the heat flow outlet 119 is introduced into the heating cavity 92 to keep the heating cavity 92 in a high temperature state, and the upper end surface of the heating cavity 92 diffuses heat upward to bake the food on the grill 96, and the upper end surface of the heating cavity 92 diffuses heat in the form of a surface area, so that the grill 96 is fully covered and the food is baked more evenly.

[0087] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A combustion device with multi-zone independent combustion and mixed heating, characterized in that: include: A combustion chamber (1), wherein an air duct (11) is arranged in the combustion chamber (1), wherein a first combustion chamber (121) and a second combustion chamber (122) are formed in the air duct (11), wherein the first combustion chamber (121) and the second combustion chamber (122) are used for fuel combustion to be heated, and a heat flow outlet (119) is formed at the end of the air duct (11); An air blowing device (2) is operated to blow air into the air duct (11), and the air flow flows through the first combustion chamber (121) and the second combustion chamber (122) in sequence to be heated to form hot air and discharged from the hot flow outlet (119).

2. The combustion device with multi-zone independent combustion and mixed heating according to claim 1 is characterized in that: The temperature of the first combustion chamber (121) in a combustion state is lower than the temperature of the second combustion chamber (122) in a combustion state; The size of the first combustion chamber (121) is smaller than the size of the second combustion chamber (122); and / or, The fuel accommodation density of the first combustion chamber (121) is smaller than the fuel accommodation density of the second combustion chamber (122); and / or, The combustion calorific value of the combustible placed in the first combustion chamber (121) is lower than the combustion calorific value of the combustible placed in the second combustion chamber (122).

3. The combustion device with multiple zones of independent combustion and mixed heating according to claim 1 or 2, characterized in that: The combustion chamber (1) is provided with a first upper chamber (123) located above the first combustion chamber (121), and a second upper chamber (124) located above the second combustion chamber (122), wherein the first upper chamber (123) and the second upper chamber (124) are separated from each other; The first upper chamber (123) and the second upper chamber (124) are in a sealed structure, so that airflow cannot be discharged through the first upper chamber (123) and the second upper chamber (124).

4. The combustion device with multi-zone independent combustion and mixed heating according to claim 3 is characterized in that: The air duct (11) comprises a first air duct (111), a second air duct (112) and a third air duct (113) which are connected in sequence, the first air duct (111) and the third air duct (113) are arranged vertically, and the second air duct (112) is arranged horizontally, the air blowing device (2) blows air into the first air duct (111), the hot flow outlet (119) is arranged close to the end of the third air duct (113), the first combustion chamber (121) and the second combustion chamber (122) are respectively formed in the second air duct (112), and the first combustion chamber (121) is located on a side of the second combustion chamber (122) facing the first air duct (111); The first upper cavity (123) and the second upper cavity (124) are formed above the second air duct (112).

5. The combustion device with multi-zone independent combustion and mixed heating according to claim 4 is characterized in that: The first air duct (111) is located on a side of the first upper chamber (123) away from the second upper chamber (124), and the second air duct (112) is located on a side of the second upper chamber (124) away from the first upper chamber (123).

6. The combustion device with multi-zone independent combustion and mixed heating according to claim 4 is characterized in that: The combustion chamber (1) is provided with a chamber cover (4) for opening and closing the first upper chamber (123) and the second upper chamber (124); the chamber cover (4) is opened to replenish fuel into the first upper chamber (123) and the second upper chamber (124).

7. The combustion device with multi-zone independent combustion and mixed heating according to claim 4 is characterized in that: It also includes a combustion box (5), wherein the combustion box (5) includes a first fuel bin (51) located in the first combustion chamber (121) and a second fuel bin (52) located in the second combustion chamber (122); The volume of the first fuel tank (51) is 20%-50% of the volume of the second fuel tank (52), or a spacer is provided in the first fuel tank (51), or the volume of the first fuel tank (51) is the same as the volume of the second fuel tank (52); A second partition (32) is provided in the combustion box (5) for separating the first fuel bin (51) and the second fuel bin (52); A first connecting hole (61) is provided on the peripheral wall of the combustion box (5), and a third connecting hole (63) is provided on the second partition (32); and / or, A second communicating hole (62) is provided on the bottom wall of the combustion box (5).

8. The combustion device with multiple independent combustion zones and mixed heating according to claim 4 is characterized in that: An ash box (7) is detachably arranged in the second air duct (112), and the ash box (7) is fitted on the combustion chamber (1) in a pull-out manner; a combustion-supporting component (8) is arranged at the upper end of the ash box (7).

9. The combustion device with multiple independent combustion zones and mixed heating according to claim 6 is characterized in that: The upper ends of the first air duct (111), the first upper chamber (123) and the second upper chamber (124) are flush, and the bin cover (4) is placed on the upper ends of the first air duct (111), the first upper chamber (123) and the second upper chamber (124); The heights of the first upper chamber (123) and the second upper chamber (124) are 3 to 10 times the height of the second air duct (112).

10. A baking oven, characterized in that: It comprises a furnace frame (9) and a combustion device for independent combustion in multiple zones and mixed heating as claimed in any one of claims 1 to 9, wherein the combustion device is arranged on the furnace frame (9) for heating; The stove frame (9) is provided with a stewing and roasting cavity (91), and the heat flow outlet (119) of the combustion device is connected to the stewing and roasting cavity (91); or, The furnace frame (9) is provided with a heating cavity (92) and a grill (96) located above the heating cavity (92); a heat flow outlet (119) of the combustion device is in communication with the heating cavity (92).

Images