Cooking device
By designing a structure that combines the air intake pipe and the exhaust port in the gas oven, the exhaust gas exchanges heat with the pipe surface to preheat the gas, solving the problem of low thermal efficiency caused by the exhaust gas carrying away heat and achieving improved thermal efficiency of the gas oven.
Patent Information
- Application Number
- CN202422563500.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-22
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2034-10-22
AI Technical Summary
When a gas oven is in use, the exhaust gas takes away heat, resulting in low thermal efficiency, which is especially obvious in low temperature environments.
The first section of the intake pipe is designed to pass through the exhaust port so that the exhaust gas can exchange heat with its outer surface, thereby preheating the fuel gas to improve combustion efficiency.
By utilizing the waste heat of exhaust gas to preheat the gas, the thermal efficiency of the gas oven is improved and the combustion performance of the gas is enhanced.
Smart Images
Figure CN223350052U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of cooking utensils, and in particular to a cooking device. Background Art
[0002] Taking a gas oven as an example, in the relevant technology, the exhaust gas generated by the gas oven during use is discharged out of the box. While the exhaust gas takes away the gas in the box, it also takes away some heat; when the ambient temperature is low, the thermal efficiency of the gas is low. Utility Model Content
[0003] In view of this, an embodiment of the present application hopes to provide a cooking device that recycles the heat in the exhaust gas to improve the thermal efficiency of the cooking device.
[0004] An embodiment of the present application provides a cooking device, comprising:
[0005] A box body and a burner, wherein the box body has a cooking cavity and an exhaust port, the burner is used to heat the cooking cavity, and the exhaust port is used to discharge gas in the cooking cavity;
[0006] An air intake pipeline, the outlet end of which is connected to the burner and is used to deliver gas to the burner; the air intake pipeline is located outside the cooking cavity, and the air intake pipeline includes a first pipe section, which passes through the exhaust port so that the gas discharged from the exhaust port can flow through the outer surface of the first pipe section.
[0007] In some embodiments, the minimum distance between the first pipe section and the exhaust port does not exceed 20 mm.
[0008] In some embodiments, in an orthographic projection of a normal plane of the exhaust port, a projection of the first pipe segment and a projection of the exhaust port at least partially overlap.
[0009] In some embodiments, in an orthographic projection of a normal plane of the exhaust port, a projection of the first pipe segment and a projection of the exhaust port do not overlap with each other, and a position of the first pipe segment is higher than that of the exhaust port.
[0010] In some embodiments, the exhaust port is in the shape of an elongated strip extending along a first direction, and the first pipe section extends along the first direction.
[0011] In some embodiments, there are multiple exhaust ports, and the multiple exhaust ports are arranged along a first direction. The first pipe section extends along the first direction and passes through the multiple exhaust ports.
[0012] In some embodiments, the first direction is a horizontal direction or a vertical direction.
[0013] In some embodiments, the box body includes a first side wall, at least a portion of the first side wall serves as a partial cavity wall of the cooking cavity, the exhaust port is arranged on the first side wall, and the air intake duct is arranged on the surface of the first side wall away from the cooking cavity.
[0014] In some embodiments, a portion of the first side wall protrudes toward a side away from the cooking cavity to form a guide portion, the top edge of the guide portion is spaced apart from the rest of the first side wall to form the exhaust port, and a portion of the first pipe section is located above the guide portion.
[0015] In some embodiments, the box body has an installation cavity, which is located above the cooking cavity, and the installation cavity and the cooking cavity are not connected to each other. The air inlet end of the air inlet pipe passes through the first side wall from the upper part of the first side wall and extends into the installation cavity, and the air outlet end of the air inlet pipe passes through the first side wall from the lower part of the first side wall and extends into the box body.
[0016] In the cooking device provided in an embodiment of the present application, the first section of the air intake pipe passes through the exhaust port, allowing the gas discharged from the exhaust port to flow through the outer surface of the air intake pipe. When the gas discharged from the exhaust port passes through the surface of the air intake pipe, the two exchange heat, and the surface temperature of the air intake pipe increases. The heat from the air intake pipe can be transferred to the gas within the pipe, causing the gas temperature there to increase. As the gas within the pipe continues to flow, the temperature of the gas in the air intake pipe downstream of the corresponding position of the exhaust port increases, and ultimately the temperature of the gas entering the burner is also increased, making it easier to burn, thereby improving the thermal efficiency of the cooking device. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a partial structural diagram of a cooking device in one embodiment of the present application;
[0018] Figure 2 for Figure 1 Schematic diagram of the structure in another perspective;
[0019] Figure 3 for Figure 1 Schematic diagram of the structure in another perspective;
[0020] Figure 4 for Figure 3 A partial enlarged schematic diagram of the structure at A;
[0021] Figure 5 for Figure 1 Schematic diagram of the structure in another perspective;
[0022] Figure 6 Schematic diagram of the relative position relationship between the exhaust port and the intake pipe in one embodiment of the present application;
[0023] Figure 7 This is a partial structural diagram of a cooking device in one embodiment of the present application.
[0024] Description of Reference Numerals
[0025] 10. Box body; 10a. Cooking cavity; 10b. Exhaust port; 10c. Installation cavity; 11. First side wall; 111. Air guide; 20. Burner; 30. Air inlet pipe; 31. First pipe section. DETAILED DESCRIPTION
[0026] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0027] In the description of the embodiments of the present application, it should be noted that the terms, "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of 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 operate in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.
[0028] In the description of the embodiments of this application, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of this application based on the specific circumstances.
[0029] This application provides a cooking device, see Figure 1 、 Figure 2 and Figure 3 The cooking device includes a housing 10, a burner 20, and an air inlet pipe 30. The housing 10 defines a cooking cavity 10a and an exhaust port 10b. The burner 20 is used to heat the cooking cavity 10a, and the exhaust port 10b is used to exhaust the gas within the cooking cavity 10a. The outlet end of the air inlet pipe 30 is connected to the burner 20, supplying gas to the burner 20.
[0030] Gas is the abbreviation of combustible gas. The type of gas is not limited, for example, it can be natural gas, liquefied gas, etc., which is not limited here.
[0031] It should be noted that the burner 20 is located outside the cooking cavity 10a, and the combustion exhaust gas generated during the combustion process of the burner 20 will not enter the cooking cavity. Exemplarily, the burner 20 is located below the cooking cavity 10a.
[0032] During use of the cooking device, the cooking cavity 10a is used to accommodate food, and the burner 20 ignites the gas delivered by the air intake pipe 30 to cause it to burn, generating heat, thereby increasing the temperature in the cooking cavity 10a and heating the food through heat conduction and heat radiation.
[0033] It is understood that when using the cooking device, heating food may generate water vapor, oil smoke, etc. Alternatively, the housing is provided with an air inlet that communicates with the cooking cavity, and airflow within the cooking cavity 10a is promoted by a fan or other means. The air in the cooking cavity 10a is discharged through the exhaust port 10b due to factors such as thermal expansion and contraction or mechanical force (e.g., fan rotation). The gas discharged through the exhaust port 10b is referred to as exhaust gas, which not only carries oil smoke but also has a certain temperature and heat.
[0034] See also Figure 4 The air intake pipe 30 is located outside the cooking cavity 10a and includes a first pipe section 31. The first pipe section 31 passes through the exhaust port 10b so that the gas discharged from the exhaust port 10b can flow through the outer surface of the first pipe section 31.
[0035] The first pipe section 31 mentioned in any embodiment of this application is based on the relative positional relationship between the intake pipe 30 and the exhaust port 10b. The portion of the intake pipe 30 located near the exhaust port 10b, where the surface can come into contact with the exhaust gas, is the first pipe section 31. In other words, a portion of the intake pipe 30 passes through the exhaust port 10b, allowing the exhaust gas from the exhaust port 10b to flow through the outer surface of this portion.
[0036] When the gas (i.e., exhaust gas) discharged from exhaust port 10b passes over the surface of first pipe segment 31, heat is exchanged between the two, causing the surface temperature of first pipe segment 31 to rise. Heat from first pipe segment 31 is transferred to the gas within the pipe, raising the gas temperature there. As the gas within the pipe continues to flow, the gas temperature within intake pipe 30 downstream of first pipe segment 31 rises, ultimately increasing the temperature of the gas entering burner 20, making it easier to burn and thus improving the thermal efficiency of the cooking device. In other words, the first pipe segment 31, passing through exhaust port 10b, can utilize the waste heat of the exhaust gas to preheat the gas.
[0037] Exemplarily, the cooking device can be a gas oven that uses a combustible gas such as natural gas or liquefied petroleum gas as fuel to grill food. Exemplarily, the cooking device can also include a gas cooktop. The cooktop is located outside the cooking cavity 10a and at the top of the cooking cavity. The cooking device's gas pipeline is located in the space between the top wall of the cooking cavity 10a and the cooktop, branching off to form an air intake pipeline 30, which is connected to the burner 20 located below the cooking cavity 10a.
[0038] Of course, the cooking device may also be in other forms, such as a portable oven, a steam-bake combination machine, etc.
[0039] In one embodiment, the burner 20 includes a nozzle, a distributor, and an ignition device. The nozzle sprays gas supplied from the air intake line 30 into the distributor. The air and gas mixture flows out of the distributor, and the ignition device ignites the mixture to initiate combustion. Ignition methods include, but are not limited to, piezoelectric and pulse ignition.
[0040] In some embodiments, the cooking device further includes a door disposed on the front side of the housing 10. The front side of the cooking cavity 10a has an access opening for a user to place or remove food. The door is used to open and close the access opening. For example, the door is pivotally connected to the housing 10, and the door's axis of rotation can be oriented vertically or horizontally. When the cooking device is in operation, the door is closed, which helps to increase the temperature within the cooking cavity 10a.
[0041] The material of the first pipe section 31 may be the same as or different from the material of the other pipe sections of the intake pipe 30. In some embodiments, the intake pipe 30 is made of metal, such as copper, stainless steel, or aluminum alloy. Intake pipes 30 made of metal have good resistance to high temperatures and are relatively safe even if heated by exhaust gas while passing through the exhaust port 10b. Of course, the intake pipe 30 may also be made of other non-metallic materials with good heat resistance.
[0042] It is understandable that the closer the air intake pipe 30 is to the exhaust port 10 b , the better the preheating effect of the gas.
[0043] In some embodiments, the minimum distance L between the first pipe section 31 and the exhaust port 10b does not exceed 20 mm (millimeter), that is, 0mm≤L≤20mm, including but not limited to 0mm, 5mm, 10mm, 20mm, etc.
[0044] The aforementioned minimum distance L not exceeding 20 mm means that there is at least one position within the plane shape enclosed by the exhaust port 10 b (ie, the flow cross-section of the exhaust port 10 b ) whose distance to the first pipe section 31 does not exceed 20 mm.
[0045] In some embodiments, in an orthographic projection of the normal plane of the exhaust port 10 b , the projection of the first pipe segment 31 and the projection of the exhaust port 10 b at least partially overlap.
[0046] The above-mentioned orthographic projection of the normal plane refers to the projection formed on the normal plane along a direction perpendicular to the normal plane. The plane perpendicular to the normal line of the plane in which the exhaust port 10b is located is the normal plane of the exhaust port 10b. In this embodiment, the intake conduit 30 is at least partially positioned directly opposite the exhaust port 10b, so that the exhaust gas can flow through the surface of the intake conduit 30 after being discharged.
[0047] It should be noted that, at least partially overlapping the projection of the first pipe segment 31 and the projection of the exhaust port 10b means that at least a portion of the projection of the first pipe segment 31 overlaps with the projection of the exhaust port 10b. For example, in some embodiments, the projection of the first pipe segment 31 does not exceed the projection of the exhaust port 10b; in other embodiments, a portion of the projection of the first pipe segment 31 overlaps with the projection of the exhaust port 10b, and another portion of the projection of the first pipe segment 31 does not overlap with the projection of the exhaust port 10b.
[0048] In some other embodiments, in the orthographic projection of the normal plane of the exhaust port 10b, the projection of the first pipe segment 31 and the projection of the exhaust port 10b do not overlap with each other, and the first pipe segment 31 is located higher than the exhaust port 10b.
[0049] In this embodiment, the first pipe section 31 is not disposed directly opposite the exhaust port 10 b to reduce obstruction to exhaust gas discharge. However, the exhaust gas discharged from the exhaust port 10 b has a higher temperature and can spontaneously move upward and still pass through the first pipe section 31 above.
[0050] For some examples, see Figure 3 and Figure 4 The exhaust port 10b is in the shape of an elongated strip extending in a first direction, and the first pipe section 31 extends in the first direction. In other words, the first pipe section 31 is arranged along the extension direction of the exhaust port 10b. This increases the surface area of the intake pipe 30 in contact with the exhaust gas, thus increasing the heat exchange area and improving the utilization rate of the waste heat in the exhaust gas.
[0051] The first direction is not limited, for example, the first direction may be a horizontal direction, a vertical direction, or a direction inclined relative to the horizontal direction.
[0052] See also Figure 6 The first pipe section 31 is arranged along the extension direction of the exhaust port 10b. The minimum distance L between the first pipe section 31 and the exhaust port 10b does not exceed 20 mm. The area enclosed by the dotted-dash circle in the figure is schematically included. The radius of the dotted-dash circle is 20 mm. When viewed along the first direction, if the cross-section of the first pipe section 31 is at least partially within the dotted-dash circle, then the distance between the first pipe section 31 and the exhaust port 10b does not exceed 20 mm.
[0053] In some embodiments, the angle between the first direction and the horizontal plane does not exceed 10°, including but not limited to 0°, 1°, 2°, 4°, 5°, 7°, 10°, etc. In other words, the first direction extends substantially in the horizontal plane.
[0054] It is understood that the temperature of the newly exhausted exhaust gas is relatively high, and it spontaneously moves upward, meaning that the direction of movement is approximately perpendicular to the horizontal plane. Therefore, the smaller the angle between the first direction and the horizontal plane, the greater the effective contact area between the exhaust gas and the intake pipe 30, thereby improving the utilization rate of the residual heat in the exhaust gas.
[0055] For some examples, see Figure 3 and Figure 5 There are multiple exhaust ports 10b, arranged along a first direction. The first pipe section 31 extends along the first direction and passes through the exhaust ports 10b. Multiple exhaust ports 10b not only facilitate exhaust gas discharge but also increase the contact area between the exhaust gas and the intake pipe 30, thereby increasing the heat exchange area and improving the utilization rate of the waste heat in the exhaust gas.
[0056] It should be noted that the sizes of the exhaust ports 10b may be the same or different.
[0057] As an optional embodiment, each exhaust port 10 b is in the shape of an elongated strip extending in the first direction, so as to further increase the contact area between the exhaust gas and the intake pipe 30 .
[0058] It should be noted that the air intake pipe 30 may be bent multiple times along its path to avoid other structures and meet design requirements.
[0059] In some embodiments, the cooking device includes an air intake valve, which is used to control the flow of gas into the air intake pipe 30. One end of the air intake pipe 30 is connected to the air intake valve, and the other end is connected to the burner 20.
[0060] In some embodiments, the box body 10 includes a first side wall 11, at least a portion of the first side wall 11 serves as a partial cavity wall of the cooking cavity 10a, the exhaust port 10b is provided on the first side wall 11, and the air intake duct 30 is arranged on the surface of the first side wall 11 away from the cooking cavity 10a.
[0061] In this embodiment, the exhaust gas in the cooking cavity 10a is discharged through the exhaust port 10b along a shorter path, and the air intake pipe 30 is arranged on the surface of the first side wall 11, with a compact structure, which saves space and realizes the utilization of exhaust gas.
[0062] The first side wall 11 may be the left side wall, the right side wall, or the rear side wall of the box body 10 , which is not limited here.
[0063] For example, the cabinet further includes two second side walls, one of which is a left side wall and the other is a right side wall, and the first side wall is a rear side wall. In this way, the air intake duct 30 is arranged on the rear surface of the rear side wall, reducing the impact of the air intake duct 30 on the appearance of the cooking device.
[0064] For some examples, see Figure 4 A portion of the first sidewall 11 protrudes toward the side away from the cooking cavity 10a to form a guide portion 111. The top edge of the guide portion 111 is spaced apart from the rest of the first sidewall 11 to form the exhaust port 10b. A portion of the first pipe section 31 is located above the guide portion 111. The guide portion 111 is used to guide exhaust gas out of the exhaust port 10b in a nearly vertical direction, allowing the exhaust gas to move upward as much as possible and contact the air intake pipe 30 above. This also reduces the emission of exhaust gas and reduces any harm to user health.
[0065] For some examples, see Figure 7 The box body 10 has an installation cavity 10c, which is located above the cooking cavity 10a, and the installation cavity 10c and the cooking cavity 10a are not connected to each other. The air inlet end of the air inlet pipe 30 passes through the first side wall 11 from the upper part and extends into the installation cavity 10c, and the air outlet end of the air inlet pipe 30 passes through the first side wall 11 from the lower part and extends into the box body 10.
[0066] In other words, the air inlet line 30 originates from the mounting cavity 10c and delivers gas to its outlet. For example, a gas cooktop can be installed within or above the mounting cavity 10c. A branch of the gas line from the cooktop connects to the air inlet line 30. This allows the cooking device to have both a cooking cavity below and a gas cooktop above, improving its integration and enriching its functionality.
[0067] In the embodiments of the present application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0068] In the description of this specification, reference to the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.
[0069] The various embodiments / implementations provided in this application can be combined with each other without causing any contradiction.
[0070] The foregoing description is merely a preferred embodiment of the present application and is not intended to limit the present application. Persons skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.
Claims
1. A cooking device, characterized in that: include: A box body and a burner, wherein the box body has a cooking cavity and an exhaust port, the burner is used to heat the cooking cavity, and the exhaust port is used to discharge gas in the cooking cavity; An air intake pipeline, the outlet end of which is connected to the burner and is used to deliver gas to the burner; the air intake pipeline is located outside the cooking cavity, and the air intake pipeline includes a first pipe section, which passes through the exhaust port so that the gas discharged from the exhaust port can flow through the outer surface of the first pipe section.
2. The cooking device according to claim 1, wherein: The minimum distance between the first pipe section and the exhaust port does not exceed 20 mm.
3. The cooking device according to claim 1, wherein In an orthographic projection of the normal plane of the exhaust port, the projection of the first pipe segment and the projection of the exhaust port at least partially overlap.
4. The cooking device according to claim 1, wherein In an orthographic projection of a normal plane of the exhaust port, a projection of the first pipe segment and a projection of the exhaust port do not overlap with each other, and a position of the first pipe segment is higher than that of the exhaust port.
5. The cooking device according to claim 1, wherein The exhaust port is in a strip shape extending along a first direction, and the first pipe section extends along the first direction.
6. The cooking device according to claim 1, wherein There are multiple exhaust ports, and the multiple exhaust ports are arranged along a first direction. The first pipe section extends along the first direction and passes through the multiple exhaust ports.
7. The cooking device according to claim 5 or 6, characterized in that: The first direction is a horizontal direction or a vertical direction.
8. The cooking device according to any one of claims 1 to 6, characterized in that: The box body includes a first side wall, at least a portion of the first side wall serves as a partial cavity wall of the cooking cavity, the exhaust port is provided on the first side wall, and the air intake duct is arranged on a surface of the first side wall away from the cooking cavity.
9. The cooking device according to claim 8, wherein A portion of the first side wall protrudes toward a side away from the cooking cavity to form a guide portion, a top edge of the guide portion is spaced apart from the remaining portion of the first side wall to form the exhaust port, and a portion of the first pipe section is located above the guide portion.
10. The cooking device according to claim 8, wherein The box body has an installation cavity, which is located above the cooking cavity, and the installation cavity and the cooking cavity are not connected to each other. The air inlet end of the air inlet pipe passes through the first side wall from the upper part and extends into the installation cavity, and the air outlet end of the air inlet pipe passes through the first side wall from the lower part and extends into the box body.