Cooktop

Abstract

The present application discloses a cooktop. The cooktop comprises: a pot support, configured to support a cooking vessel; a burner, surrounded by the pot support and configured to heat the cooking vessel; and a heat recovery device, arranged on the outer side of the pot support in a radial direction of the pot support, and configured to absorb heat from flue gas generated by the burner and to heat air flowing toward the burner.

Description

stove

[0001] Related applications

[0002] This application claims priority to the Chinese patent application filed with the China Patent Office on February 29, 2024, with application number 2024102300930 and application name “Stove”, the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the technical field of stoves, and in particular to a stove. Background Art

[0004] The stove in the related art heats the pot through a burner, but the burner will also generate smoke in the process of generating flames. The smoke will escape into the air through the gap between the pot and the stove. The heat carried in the smoke cannot be used, thereby causing exhaust heat loss. Summary of the Invention

[0005] This application aims to address at least one of the technical problems existing in the exemplary technology. To this end, one objective of this application is to provide a stove that can recover waste heat from escaping flue gases and preheat the air flowing to the burner, thereby improving the heat utilization rate of the escaping flue gases, effectively saving fuel, and reducing carbon emissions.

[0006] In order to achieve the above-mentioned objectives, according to an embodiment of the present application, a stove is proposed, comprising: a pot rack configured to support the pot; a burner surrounded by the pot rack and configured to heat the pot; and a heat recovery device arranged on the outer side of the pot rack along the radial direction of the pot rack, configured to absorb heat from the flue gas generated by the burner and heat the air flowing to the burner.

[0007] In some embodiments, a smoke channel is defined between the upper surface of the pot rack and the lower surface of the pot; in the axial direction of the pot rack, the heat recovery device corresponds to the position of the smoke channel.

[0008] In some embodiments, the heat recovery device extends along the circumference of the pot support.

[0009] In some embodiments, there are a plurality of heat recovery devices, and the plurality of heat recovery devices are evenly and spacedly arranged along the circumference of the pot rack.

[0010] In some embodiments, the upper surface of the heat recovery device is not lower than the outer periphery of the lower surface of the cookware.

[0011] In some embodiments, the lower surface of the heat recovery device is no higher than the outer periphery of the upper surface of the pot support.

[0012] In some embodiments, the heat recovery device includes a first heat exchange portion, which is provided on the outer side of the pot support along the radial direction of the pot support, and the first heat exchange portion is configured to absorb heat from the flue gas generated by the burner.

[0013] In some embodiments, the heat recovery device includes a second heat exchange portion that exchanges heat with the first heat exchange portion, and the second heat exchange portion is configured to heat the air flowing toward the burner.

[0014] In some embodiments, a supplementary air flow passage is provided at the lower portion of the burner, and flue gas is generated at the upper portion of the burner; the second heat exchange portion is located below the first heat exchange portion and is configured to heat the air flowing into the supplementary air flow passage.

[0015] In some embodiments, the heat recovery device is a heat pipe.

[0016] In some embodiments, the heat recovery device is provided with a smoke guiding channel, a smoke inlet and a smoke outlet.

[0017] In some embodiments, the smoke guiding channel extends along the axial direction of the pan support and is connected to the smoke inlet and the smoke outlet.

[0018] In some embodiments, the smoke inlet is located above the smoke outlet, and the smoke generated by the burner flows into the smoke guiding channel through the smoke inlet.

[0019] In some embodiments, the flue gas in the flue gas guiding channel flows out through the flue gas outlet to heat the air flowing to the burner.

[0020] In some embodiments, the pot support and the heat recovery device are constructed as an integrated structure.

[0021] In some embodiments, the pot support and the heat recovery device are constructed as an integral structure and are detachably connected thereto.

[0022] In some embodiments, the cooker further comprises: a panel, the pot rack, the burner and the heat recovery device are arranged on an upper surface of the panel, and the heat recovery device is movable relative to the panel.

[0023] The stove of the embodiment of the present application is configured to absorb the heat of the flue gas escaping from the gap between the stove and the pot by adding a heat recovery device, and heat the air flowing to the burner, thereby improving the utilization rate of the waste heat of the flue gas, effectively saving fuel and reducing carbon emissions.

[0024] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0026] FIG1 is a schematic diagram of an assembly of a cooker and a cooker according to an embodiment of the present application;

[0027] FIG2 is a second schematic diagram of the assembly of the cooker and the cookware according to an embodiment of the present application;

[0028] FIG3 is a schematic structural diagram of a cooker and a burner of a stove according to an embodiment of the present application;

[0029] FIG4 is a schematic diagram of the structure of a smoke guide device of a cooker according to an embodiment of the present application;

[0030] FIG5 is a second structural schematic diagram of the smoke guide device of the cooker according to an embodiment of the present application;

[0031] FIG6 is a third structural schematic diagram of the smoke guide device of the cooker according to an embodiment of the present application;

[0032] FIG7 is a schematic diagram of the working process of the heat recovery device of the cooker according to an embodiment of the present application.

[0033] Reference numerals: cooker 1 ; pot 2 ; pot rack 100 ; smoke passage 110 ; burner 200 ; heat recovery device 300 ; smoke guiding passage 310 ; smoke inlet 311 ; smoke outlet 312 ; first heat exchange part 320 ; second heat exchange part 330 ; panel 400 ; drainage device 500 . DETAILED DESCRIPTION

[0034] The embodiments of the present application are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present application are described in detail below.

[0035] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0036] In the description of this application, “plurality” means two or more.

[0037] In order to improve the utilization rate of waste heat from flue gas, stoves in the related art usually add an energy-gathering ring structure to the pot rack and a curved channel to the upper surface of the pot rack to increase the flow path of the flue gas and improve the heat exchange rate between the flue gas and the bottom of the pot. However, the flue gas escaping from the gap between the stove and the pot is not utilized, and the heat of the flue gas is not fully utilized.

[0038] The stove 1 of the embodiment of the present application is configured to absorb the heat of the flue gas escaping from the gap between the stove 1 and the pot 2 by adding a heat recovery device 300, and heat the air flowing to the burner 200, thereby improving the utilization rate of the waste heat of the flue gas, effectively saving fuel and reducing carbon emissions.

[0039] The cooker 1 according to an embodiment of the present application will be described below with reference to the accompanying drawings.

[0040] As shown in FIG. 1 to FIG. 6 , the cooker 1 according to the embodiment of the present application includes a pot rack 100 , a burner 200 and a smoke guiding device 300 .

[0041] The pot rack 100 is configured to support the pot 2, and the burner 200 is surrounded by the pot rack 100. The burner 200 is configured to heat the pot 2. By supporting the pot 2 by the pot rack 100, a certain space can be created between the burner 200 and the pot 2, and the flame generated by the burner 200 can heat the pot 2 more efficiently.

[0042] The heat recovery device 300 is disposed on the outer side of the cooker frame 100 along the radial direction of the cooker frame 100 , and is configured to absorb heat from the flue gas generated by the burner 200 and heat the air flowing toward the burner 200 .

[0043] Specifically, the heat recovery device 300 and the pot 2 are spaced apart in the radial direction of the pot rack 100 to avoid interference between the heat recovery device 300 and the pot 2 , making it convenient to place the pot 2 on and remove it from the pot rack 100 .

[0044] The flue gas escaping from between the cooker 1 and the pot 2 contains heat and will move upward and outward in the radial direction of the pot rack 100. Since the heat recovery device 300 is arranged on the outer side of the pot rack 100 in the radial direction of the pot rack 100, the heat recovery device 300 will prevent the flue gas from moving outward in the radial direction of the pot rack 100. Therefore, the flue gas exchanges heat with the heat recovery device 300, so that the heat recovery device 300 can absorb the heat of the flue gas and recover the waste heat of the flue gas.

[0045] In addition, the heat recovery device 300 can heat the air flowing to the burner 200. That is to say, the fuel of the burner 200 is mixed with the heated air and burned, which can make the fuel burn more fully, reduce carbon emissions, and use less fuel to heat the pot 2, reducing fuel consumption, saving fuel, and reducing applicable costs.

[0046] It can be seen that the stove 1 of the embodiment of the present application absorbs the heat of the flue gas by adding the heat recovery device 300, recovers the waste heat of the flue gas, and heats the air flowing to the burner 200, thereby reducing carbon emissions and saving fuel.

[0047] 1 and 2 , a smoke channel 110 is defined between the upper surface of the pan support 100 and the lower surface of the cookware 2. In the axial direction of the pan support 100, the heat recovery device 300 corresponds to the position of the smoke channel 110.

[0048] In this way, the flue gas generated by the burner 200 is discharged to the outside of the pot support 100 through the flue gas channel 110, and the position of the heat recovery device 300 is aligned with the flue gas channel 110. After the flue gas escapes, it is directly blocked by the heat recovery device 300 and will not continue to flow radially outward along the pot support 2. After the flue gas escapes, it can exchange heat with the heat recovery device 300 more quickly, so as to reduce the heat damage of the flue gas before it exchanges heat with the heat recovery device 300, and increase the heat exchange between the heat recovery device 300 and the flue gas, so as to recover more flue gas heat, further increase the temperature of the air flowing to the burner 200, shorten the fuel required for the pot 2, and reduce carbon emissions.

[0049] In some embodiments, the heat recovery device 300 extends along the circumference of the pot support 100. In other words, the heat recovery device 300 can be configured in an arc shape to better match the shape of the pot support 100. Compared to a planar heat recovery device 300, the arc-shaped heat recovery device 300 is closer to the pot support 100 than a planar heat recovery device 300. Given the same area, this can improve the efficiency of the heat recovery device 300 in guiding the flue gas, prevent the disordered diffusion of the flue gas, and improve the heat utilization rate of the flue gas.

[0050] 1 and 2 , there are multiple heat recovery devices 300 , which are evenly and spaced apart along the circumference of the wok rack 100 . For example, the heat recovery devices 300 are located on opposite sides of the wok rack 100 in the radial direction.

[0051] By increasing the number of heat recovery devices 300, the amount of flue gas guided by the heat recovery devices 300 as a whole can be increased, the escaping flue gas can be utilized on a larger scale, and the heat utilization rate of the flue gas can be improved. In addition, since the multiple heat recovery devices 300 are evenly arranged along the pot rack 100, the flue gas around the pot rack 100 can be effectively guided, avoiding the situation where the multiple heat recovery devices 300 are too concentrated, resulting in the effective utilization of the flue gas in one area of ​​the pot rack 100 and the disorderly diffusion of the flue gas in the other area.

[0052] In addition, since the plurality of heat recovery devices 300 are spaced apart along the circumference of the pot rack 100 , the user can contact the pot 2 through the spacers to take out and place the pot 2 .

[0053] In some embodiments, the height of the heat recovery device 300 may be lower than the upper end of the pot 2 , so that the user can touch the upper end of the pot 2 to take out and place the pot 2 .

[0054] 1 and 2 , the upper surface of the heat recovery device 300 is not lower than the outer periphery of the upper surface of the cookware 2 , and the lower surface of the heat recovery device 300 is not higher than the outer periphery of the upper surface of the pot rack 100 .

[0055] In this way, in the axial direction of the pot rack 100, the flue gas channel 110 is completely covered by the heat recovery device 300, and the flue gas escaping from the flue gas channel 110 can be completely blocked by the heat recovery device 300, further increasing the flue gas flow rate flowing into the heat recovery device 310, and further increasing the heat of the recovered flue gas.

[0056] In some embodiments, as shown in Figures 1 and 2 , the heat recovery device 300 includes a first heat exchange portion 320 and a second heat exchange portion 330. The first heat exchange portion 320 is disposed radially outside the cooker frame 100 and is configured to absorb heat from the flue gas generated by the burner 200. The second heat exchange portion 330 exchanges heat with the first heat exchange portion 320 and is configured to heat the air flowing toward the burner 200.

[0057] For example, the first heat exchange part 320 and the second heat exchange part 330 can be connected by a heat-conducting structure with good thermal conductivity, and the heat-conducting structure can be constructed in a plate-like, fin-like or tubular shape; or the first heat exchange part 320 and the second heat exchange part 330 can directly contact and exchange heat; or the first heat exchange part 320 and the second heat exchange part 330 are both provided with pipes, and a cooling medium is provided in the pipes, and the cooling medium flows between the pipes of the first heat exchange part 320 and the pipes of the second heat exchange part 330.

[0058] By dividing the heat recovery device 300 into a first heat exchange part 320 and a second heat exchange part 330, the first heat exchange part 320 absorbs the heat of the flue gas through heat exchange with the flue gas, and then the first heat exchange part 320 and the second heat exchange part 330 exchange heat to transfer the heat to the second heat exchange part 330, it is possible to avoid heat concentration on the first heat exchange part 320 and resulting in a decrease in the heat exchange efficiency between the first heat exchange part 320 and the flue gas. The second heat exchange part 330 exchanges heat with the air flowing to the burner 200 to preheat this part of the air, thereby improving the combustion efficiency of the burner 200, effectively saving fuel, and reducing carbon emissions.

[0059] In other embodiments of the present application, a supplementary air flow duct is provided at the lower portion of the burner 200, flue gas is generated at the upper portion of the burner 200, and the second heat exchange portion 330 is located below the first heat exchange portion 320 and is configured to heat the air flowing into the supplementary air flow duct.

[0060] Since flue gas usually moves upward, it is difficult to use the heat of the flue gas to heat the air flowing downward toward the burner 200. By setting the first heat exchange part 320 and the second heat exchange part 330, the heat of the flue gas is transferred downward, thereby achieving the purpose of preheating the air flowing toward the burner 200.

[0061] In some embodiments, the heat recovery device 300 is a heat pipe. The heat pipe has high heat transfer efficiency, which can further improve the efficiency of flue gas heat recovery. In addition, the heat pipe has a simple structure and occupies a small space, making it suitable for application to the stove 1 to reduce the volume of the stove 1.

[0062] The following describes the working process when the heat recovery device 300 is a heat pipe by way of example with reference to the accompanying drawings:

[0063] As shown in FIG7 , the low-temperature air flowing to the burner 200 exchanges heat with the condensing end of the heat pipe. The gaseous working medium in the condensing end releases heat to heat the low-temperature air. The low-temperature air temperature rises and becomes high-temperature air. The high-temperature air continues to flow to the burner 200. At this time, the gaseous working medium becomes liquid working medium. The liquid working medium flows to the evaporation end driven by the gas-liquid density difference.

[0064] Next, the high-temperature air mixes with the fuel and burns in the burner 200, and the burner 200 generates smoke, which escapes from between the pot 2 and the pot rack 100;

[0065] Then, the escaping flue gas exchanges heat with the evaporation end of the heat pipe. The liquid phase working medium in the evaporation end absorbs heat to recover the waste heat in the escaping flue gas, and the flue gas is turned into low-temperature flue gas. At this time, the liquid phase working medium becomes a gas phase working medium, and the gas phase working medium flows to the condensation end driven by the gas-liquid density difference.

[0066] It should be noted that the dotted arrows in the drawings indicate the direction of air flow or flue gas flow, and the actual arrows indicate the direction of working medium flow in the heat pipe.

[0067] In some embodiments, as shown in Figures 4 to 6, the heat recovery device 300 is provided with a smoke guiding channel 310, a smoke inlet 311 and a smoke outlet 312. The smoke guiding channel 310 extends along the axial direction of the pot rack 100 and is connected to the smoke inlet 311 and the smoke outlet 312. The smoke inlet 311 is located above the smoke outlet 312. The smoke generated by the burner 200 flows into the smoke guiding channel 310 through the smoke inlet 311, and the smoke in the smoke guiding channel 310 flows out through the smoke outlet 311 to heat the air flowing to the burner 200.

[0068] For example, a drainage device 500 may be provided within the smoke guiding channel 310, or at the smoke outlet 312, or at the smoke inlet 311. The drainage device 500 is configured to guide the flow of smoke, and the drainage device 500 may be a fan. When the drainage device 500 is located at the smoke outlet 312 or the smoke inlet 311, the drainage device 500 may be an axial flow fan; when the drainage device 500 is located within the smoke guiding channel 310, the drainage device 500 may be a centrifugal fan.

[0069] By providing a flue gas guide channel 310, a flue gas inlet 311 and a flue gas outlet 312, the flue gas can be guided to flow in a predetermined direction, for example, the flue gas can be guided downward so that the flue gas can directly exchange heat with the air flowing to the burner 200. The structure of the heat recovery device 300 is simpler, and no additional cooling medium is required, thereby reducing costs.

[0070] In some embodiments, as shown in Figure 1, the pot rack 100 and the heat recovery device 300 are constructed as an integrated structure. In this way, the pot rack 100 and the heat recovery device 300 can be processed and formed as one piece, which reduces the production steps, improves the production efficiency, increases the connection strength between the pot rack 100 and the heat recovery device 300, and reduces the probability of separation between the pot rack 100 and the heat recovery device 300. In addition, the pot rack 100 and the heat recovery device 300 can be installed and disassembled together, which reduces the assembly and disassembly steps and improves the assembly and disassembly efficiency.

[0071] In other embodiments of the present application, the pot rack 100 and the heat recovery device 300 are detachably connected. This allows the pot rack 100 and the heat recovery device 300 to be installed and removed independently. If one of the pot rack 100 and the heat recovery device 300 is damaged, the other does not need to be repaired or replaced, reducing maintenance costs. This also makes transportation and storage more convenient and saves space. Furthermore, the heat recovery device 300 is an optional component, allowing users to select it based on their needs, thereby expanding the applicability of the stove 1.

[0072] In some embodiments, as shown in FIG. 2 , the cooker 1 further includes a panel 400 , and the pot rack 100 , the burner 200 and the heat recovery device 300 are disposed on an upper surface of the panel 400 . The heat recovery device 300 is movable relative to the panel 400 .

[0073] For example, the panel 400 may be provided with a slide rail (not shown in the figure), and the heat recovery device 300 may be provided with a slider (not shown in the figure), which may be slidably arranged in the slide rail. The heat recovery device 300 may be manually slid relative to the panel 400, or the heat recovery device 300 may be automatically slid relative to the panel 400 by providing a driving device such as a motor or a hydraulic drive (not shown in the figure) to drive the heat recovery device 300 to slide relative to the panel 400.

[0074] By setting the panel 400, the relative positions of the pot rack 100, the burner 200 and the heat recovery device 300 can be fixed, and since the heat recovery device 300 is movable relative to the panel 400, when pots 2 of different sizes are placed on the cooker 1, the position of the heat recovery device 300 relative to the panel 400 can be adjusted to adjust the position of the heat recovery device 300 relative to the pot 2. On the one hand, the pot 2 and the heat recovery device 300 will not be too close, thereby avoiding interference between the pot 2 and the heat recovery device 300. On the other hand, the heat recovery device 300 will not be too far from the pot 2, thereby being able to absorb more escaping flue gas and improving the utilization rate of flue gas.

[0075] Other structures and operations of the cooker 1 according to the embodiment of the present application are known to those skilled in the art and will not be described in detail here.

[0076] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0077] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A stove, wherein: include: a pot stand configured to support a pot; a burner, surrounded by the pot support, configured to heat the pot; The heat recovery device is arranged on the outer side of the boiler frame along the radial direction of the boiler frame, and is configured to absorb the heat of the flue gas generated by the burner and heat the air flowing to the burner.

2. The cooker according to claim 1, wherein: A smoke channel is defined between the upper surface of the pot rack and the lower surface of the pot; In the axial direction of the pot support, the heat recovery device corresponds to the position of the flue gas channel.

3. The cooker according to claim 2, wherein: The heat recovery device extends along the circumference of the pot support.

4. The cooker according to claim 2 or 3, wherein: There are multiple heat recovery devices, and the multiple heat recovery devices are evenly and spacedly arranged along the circumference of the pot rack.

5. The cooker according to any one of claims 2 to 4, wherein: The upper surface of the heat recovery device is not lower than the outer periphery of the lower surface of the cookware; and / or The lower surface of the heat recovery device is not higher than the outer periphery of the upper surface of the pot rack.

6. The cooker according to any one of claims 1 to 5, wherein: The heat recovery device comprises: a first heat exchange portion, disposed on an outer side of the pot support in a radial direction of the pot support, the first heat exchange portion being configured to absorb heat from the flue gas generated by the burner; The second heat exchange part exchanges heat with the first heat exchange part, and the second heat exchange part is configured to heat the air flowing toward the burner.

7. The cooker according to claim 6, wherein: The lower part of the burner is provided with a flow channel, and the upper part of the burner generates smoke; The second heat exchange portion is located below the first heat exchange portion and is configured to heat the air flowing toward the supplementary air flow channel.

8. The cooker according to claim 6 or 7, wherein: The heat recovery device is a heat pipe.

9. The cooker according to any one of claims 1 to 8, wherein: The heat recovery device is provided with a smoke guide channel, a smoke inlet and a smoke outlet. The smoke guide channel extends along the axial direction of the pot support and is connected with the smoke inlet and the smoke outlet. The smoke inlet is located above the smoke outlet. The smoke generated by the burner flows into the smoke guide channel through the smoke inlet. The smoke in the smoke guide channel flows out through the smoke outlet to heat the air flowing to the burner.

10. The cooker according to any one of claims 1 to 9, wherein: The pot support and the heat recovery device are constructed as an integrated structure; or The pot support and the heat recovery device are constructed as an integrated structure and are detachably connected therebetween.

11. The cooker according to any one of claims 1 to 10, wherein: Also includes: A panel, the pot support, the burner and the heat recovery device are arranged on the upper surface of the panel, and the heat recovery device is movable relative to the panel.

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