Cooking utensil
By connecting the target ground wire to the pot body grounding point in the cooking appliance and setting up a filter device, the problem of poor EMC performance caused by the wireless temperature measurement module was solved, thereby improving EMC performance and enhancing operational stability.
Patent Information
- Application Number
- CN202520034471.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-07
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-01-07
AI Technical Summary
When existing cooking appliances are powered on, the wireless signal of the wireless temperature measurement module is coupled to the grounded casing, resulting in poor EMC performance. There is currently no effective solution.
In cooking appliances, the target ground wire is connected to the grounding point of the pot body, and a filter device, such as a magnetic ring or a tunable inductor, is installed on the target ground wire to filter out interference signals from the wireless temperature measurement module. At the same time, the power board is not grounded to avoid the influence of high-frequency noise. The target ground wire can be wrapped with or threaded through the filter device to enhance the suppression effect.
By setting up filtering components, interference signals from the wireless temperature measurement module and external interference from the power cord are effectively reduced, improving the EMC performance and operational stability of the cooking appliance and enhancing electromagnetic compatibility.
Smart Images
Figure CN223884650U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of household appliances, in particular to a cooking appliance. BACKGROUND
[0002] In the prior art, when the cooking is powered on, the ground wire is generally directly connected to the grounded shell part. For a type of appliance with wireless temperature measurement, the wireless signal of the wireless temperature measurement will be coupled to the grounded shell during communication, resulting in EMC failure.
[0003] Currently, there is no effective solution to the poor EMC effect of the cooking appliance in the related art. CONTENT OF THE UTILITY MODEL
[0004] The main purpose of the present application is to provide a cooking appliance to solve the problem of poor EMC effect of the cooking appliance in the related art.
[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present application, a cooking appliance is provided. The cooking appliance comprises: an appliance body, a target ground wire in the appliance body is connected to a grounding point of a pot body in the appliance body, and the target ground wire at least comprises a first ground wire connected by a metal shell in the appliance body; a filter device is arranged on the target ground wire to eliminate interference signals caused by a wireless temperature measurement module in the appliance body. The first ground wire connected by the metal shell in the appliance body is connected to the grounding point of the pot body in the appliance body, and the filter device is arranged on the target ground wire. The EMC interference signals caused by the wireless temperature measurement module can be effectively filtered out through the filter device, thereby improving the EMC effect of the cooking appliance.
[0006] Further, the target ground wire further comprises a second ground wire in a power line in the appliance body. By connecting the second ground wire to the grounding point of the pot body in the appliance body, the current can be quickly directed to the ground when the power line fails, thereby avoiding damage to the electronic components inside the device.
[0007] Further, the filter device is arranged on the first ground wire. By arranging the filter device on the first ground wire, the interference signals generated by the wireless temperature measurement module can be effectively blocked or reduced from being coupled to the metal shell through the ground wire, thereby improving the EMC effect of the cooking appliance.
[0008] Further, the filter device is arranged on the second ground wire. By arranging the filter device on the second ground wire, the interference signals generated by the wireless temperature measurement module can be effectively blocked or reduced, and at the same time, the external interference introduced by the power line can also be effectively reduced, thereby further improving the EMC effect of the cooking appliance.
[0009] Further, the appliance body further comprises a power board connected with the live wire and the zero wire in the power supply line, wherein the working voltage of the appliance body is provided through the power board. The power board is not grounded, which avoids the power board from being part of the ground loop, reduces the possibility of affecting the function of the power board due to high-frequency noise on the ground wire, and improves the operation stability of the cooking appliance.
[0010] Further, the filter device is a magnetic ring. The magnetic ring can effectively reduce the radiation and conducted interference on the ground wire, and the magnetic material of the magnetic ring can hinder the changing electromagnetic field, thereby reducing the electromagnetic compatibility problem. Moreover, the magnetic ring is simple in design and easy to install.
[0011] Further, the target ground wire is wound on the filter device in a preset number of turns. The filter device is arranged on the ground wire in a winding manner, and the number of turns can be adjusted to more effectively reduce electromagnetic radiation and conducted interference and improve the electromagnetic compatibility of the cooking appliance. Moreover, by setting an appropriate preset number of turns, the filter device can more effectively improve the EMC effect of the cooking appliance.
[0012] Further, the target ground wire is arranged on the filter device. The target ground wire arranged on the filter device improves the convenience of deploying the filter device.
[0013] Further, the filter device comprises at least one tunable inductive element. The tunable inductive element can be dynamically adjusted to adapt to different frequency interference, which helps to optimize the EMC of the cooking appliance.
[0014] Further, the appliance body further comprises a power board box, and the first ground wire or the filter device is fixed to the power board box. The power board box can ensure the stability of the cooking appliance during transportation, reduce shaking, and avoid collision of the magnetic ring with other components.
[0015] In the cooking appliance provided in the present application, the target ground wire in the appliance body is connected to the grounding point of the pot body in the appliance body, and the target ground wire at least comprises a first ground wire connected to the metal shell in the appliance body; the filter device is arranged on the target ground wire to eliminate the interference signal caused by the wireless temperature measurement module in the appliance body, thereby solving the technical problem of poor EMC effect of the cooking appliance in the related art. In the present solution, the first ground wire connected to the metal shell in the appliance body is connected to the grounding point of the pot body in the appliance body, and the filter device is arranged on the target ground wire. The filter device can effectively filter out the EMC interference signal caused by the wireless temperature measurement module, thereby improving the EMC effect of the cooking appliance. BRIEF DESCRIPTION OF DRAWINGS
[0016] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application and are incorporated in and constitute a part of this application. The illustrations, together with the description, serve to explain the application, but are not intended to limit the application.
[0017] Figure 1 is a schematic view of a cooking appliance provided according to an embodiment of the application Figure 1 ;
[0018] Figure 2 is a schematic view of a cooking appliance provided according to an embodiment of the application Figure 2 ;
[0019] Figure 3 is a schematic view of a cooking appliance provided according to an embodiment of the application Figure 3 ;
[0020] wherein 10 - metal housing, 20 - filter device, 30 - power cord, 40 - power board, 50 - power board box and 60 - wireless temperature measurement module. DETAILED DESCRIPTION
[0021] In order to make the personnel in the art better understand the scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor should belong to the scope of protection of the present application.
[0022] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.
[0023] It should be noted that the following detailed description is all exemplary and is intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as generally understood by those of ordinary skill in the art to which the present application belongs.
[0024] It should be noted that the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is intended to include the plural form, and furthermore, it should be understood that when the terms "comprise" and / or "include" are used in the specification, they indicate the presence of a feature, step, operation, device, component and / or combination thereof.
[0025] The present application will be described below in combination with preferred implementation devices, Figure 1A schematic view of a cooking appliance is provided according to an embodiment of the present application Figure 1 As shown in Figure 1 The cooking appliance includes an appliance body and a filtering device 20.
[0026] The target ground line in the appliance body is connected to the grounding point of the pot body in the appliance body, and the target ground line at least includes a first ground line connected to the metal shell 10 in the appliance body; the filtering device 20 is arranged on the target ground line to eliminate the interference signal caused by the wireless temperature measurement module in the appliance body.
[0027] As shown in Figure 1 The cooking appliance provided in the embodiment of the present application includes an appliance body and a filtering device 20. The target ground line in the appliance body is connected to the grounding point of the pot body in the appliance body. It should be noted that, as shown in Figure 1 The target ground line at least includes a first ground line connected to the metal shell 10 in the appliance body. Connecting the target ground line to the grounding point of the pot body in the appliance body can simplify the wiring design inside the cooking appliance and reduce the manufacturing cost.
[0028] The filtering device 20 is arranged on the target ground line, for example, the filtering device 20 can be arranged on the first ground line connected to the metal shell 10 in the appliance body. The interference coupled out can be suppressed by the filtering device 20, effectively improving the EMC effect. When the cooking appliance is in operation, the current flows through the ground line, which will generate a ring-shaped magnetic field around the ground line. At this time, the filtering device 20 is arranged on the ground line, which will generate a magnetic field on the magnetic ring, and the magnetic field will also change. The transformed magnetic field will generate an electric field, and this electric field will also generate a current, that is, generate heat, thereby playing a suppression effect.
[0029] In summary, the first ground line connected to the metal shell in the appliance body is connected to the grounding point of the pot body in the appliance body, and the filtering device is arranged on the target ground line. The EMC interference signal caused by the wireless temperature measurement module can be effectively filtered out by the filtering device, thereby improving the EMC effect of the cooking appliance.
[0030] Optionally, in the cooking appliance provided in the embodiment of the present application, the target ground line further includes a second ground line in the power line 30 in the appliance body.
[0031] In an optional embodiment, as shown in Figure 1 The target ground line further includes a second ground line in the power line 30 in the appliance body, that is, the second ground line is also connected to the grounding point of the pot body in the appliance body. By connecting the second ground line to the grounding point of the pot body in the appliance body, the current can be quickly directed to the ground when the power line fails, avoiding damage to the electronic components inside the device.
[0032] Optionally, in the cooking utensil provided in the embodiments of the present application, the filter device 20 is arranged on the first ground wire.
[0033] In an optional embodiment, as shown in Figure 2 the filter device 20 can be arranged on the first ground wire. By arranging the filter device 20 on the first ground wire, the interference signals generated by the wireless temperature measurement module can be effectively blocked or reduced from being coupled to the metal shell 10 in the utensil body through the ground wire, so that the EMC effect of the cooking utensil is improved.
[0034] Optionally, in the cooking utensil provided in the embodiments of the present application, the filter device 20 is arranged on the second ground wire.
[0035] In an optional embodiment, as shown in Figure 1 the filter device 20 is arranged on the second ground wire. By arranging the filter device 20 on the second ground wire, the interference signals generated by the wireless temperature measurement module can be effectively blocked or reduced, and at the same time, the external interference introduced by the power line can also be effectively reduced, so that the EMC effect of the cooking utensil can be further improved.
[0036] Optionally, in the cooking utensil provided in the embodiments of the present application, the utensil body further comprises a power board 40, the power board 40 is connected with the live wire and the neutral wire in the power line 30, and the power board 40 provides working voltage for the utensil body.
[0037] In an optional embodiment, as shown in Figure 3 the utensil body further comprises a power board 40, the power board 40 is connected with the live wire and the neutral wire in the power line 30, and the ground wire of the power board 40 is not grounded. It should be noted that the power board 40 is used to provide working voltage for the utensil body. The power board 40 is not grounded, which avoids the power board from becoming a part of the ground wire loop, reduces the possibility that the high-frequency noise on the ground wire affects the function of the power board, and thus improves the running stability of the cooking utensil.
[0038] Optionally, the filter device 20 is a magnetic ring. The magnetic ring can effectively reduce the radiation and conducted interference on the ground wire, and the magnetic material of the magnetic ring has a hindering effect on the changing electromagnetic field, so that the electromagnetic compatibility problem is reduced. In addition, the magnetic ring is simple in design and easy to install.
[0039] Optionally, the target ground wire is wound on the filter device 20 in a preset number of turns.
[0040] In an optional embodiment, when the filter device 20 is a magnetic ring, the filter device 20 can be arranged on the target ground wire in the following manner: the target ground wire is wound on the filter device 20 in a preset number of turns, for example, the target ground wire is wound on the filter device 20 in 1 turn, 2 turns or more turns. By arranging the filter device on the ground wire in a winding manner, the electromagnetic radiation and conduction interference can be more effectively reduced by adjusting the number of turns, thereby improving the electromagnetic compatibility of the cooking appliance, and by setting an appropriate preset number of turns, the filter device 20 can more effectively improve the EMC effect of the cooking appliance.
[0041] Optionally, the target ground wire is arranged on the filter device 20.
[0042] In an optional embodiment, when the filter device 20 is a magnetic ring, the filter device 20 can be arranged on the target ground wire in the following manner: the target ground wire is wound on the filter device 20 in a preset number of turns, for example, the target ground wire is wound on the filter device 20 in 1 turn, 2 turns or more turns. By arranging the filter device on the ground wire in a winding manner, the electromagnetic radiation and conduction interference can be more effectively reduced by adjusting the number of turns, thereby improving the electromagnetic compatibility of the cooking appliance, and by setting an appropriate preset number of turns, the filter device 20 can more effectively improve the EMC effect of the cooking appliance.
[0043] Optionally, the filter device 20 comprises at least one tunable inductive element. The tunable inductive element can be dynamically adjusted to adapt to different frequency interference, which helps to optimize the EMC of the cooking appliance.
[0044] Optionally, the appliance body further comprises a power panel box 50, wherein the first ground wire or the filter device is fixed to the power panel box 50.
[0045] In an optional embodiment, as shown in Figure 3 , the appliance body further comprises a power panel box 50, and the first ground wire or the filter device can be fixed to the power panel box 50. It should be noted that a wire harness buckle is arranged in the power panel box 50 to fix the first ground wire or the filter device to the power panel box 50. By arranging the power panel box, the stability of the cooking appliance during transportation can be ensured, the shaking can be reduced, and the magnetic ring can be prevented from colliding with other components.
[0046] In an optional embodiment, as shown in , the cooking appliance comprises a metal shell 10 in the appliance body, a filter device 20, a power cord 30, a power panel 40 and a wireless temperature measurement module 60. The ground wire in the power cord is connected to the grounding point of the pot body, and the grounding wire of the metal shell is connected to the grounding point of the pot body after passing through the magnetic ring (the ground wire is wound in 1 turn or several turns). Winding the ground wire through a magnetic ring can suppress the coupled interference and effectively improve the EMC effect.
[0047] In the cooking utensil provided in the application, the target ground wire in the utensil body is connected to the grounding point of the pot body in the utensil body, and the target ground wire at least includes the first ground wire connected to the metal shell in the utensil body; the filter device is arranged on the target ground wire to eliminate the interference signal caused by the wireless temperature measurement module in the utensil body, thereby solving the technical problem of poor EMC effect of the cooking utensil in the related art. In the scheme, the first ground wire connected to the metal shell in the utensil body is connected to the grounding point of the pot body in the utensil body, and the filter device is arranged on the target ground wire, so that the EMC interference signal caused by the wireless temperature measurement module can be effectively filtered out, thereby improving the EMC effect of the cooking utensil.
[0048] It should be noted that the terms "first", "second", and the like in the specification and claims of the application and the above-described drawings are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the application described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to only those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.
[0049] For ease of description, spatial relative terms such as "over", "above", "upper surface", "upper", etc. can be used herein to describe the spatial positional relationship of one device or feature with respect to other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device as described in the drawings.
[0050] For example, if the device in the drawing is inverted, the device described as "above" or "over" other devices or structures will be positioned "below" or "under" the other devices or structures. Thus, the exemplary term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly.
[0051] The above merely describes preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A cooking appliance characterized by, The utility model relates to an electric cooker, and particularly relates to a wireless temperature measurement module and a filter device for the same. The utility model relates to an electric cooker, and particularly relates to a wireless temperature measurement module and a filter device for the same. The target ground wire further comprises a second ground wire in a power supply wire in the appliance body.
2. The cooking appliance of claim 1, wherein, The filter device (20) is arranged on the first ground wire.
3. The cooking appliance of claim 1, wherein, The filter device (20) is arranged on the second ground wire.
4. The cooking appliance of claim 2, wherein, The appliance body further comprises:
5. The cooking appliance of claim 2, wherein, A power board (40) connected with a fire wire and a zero wire in the power supply wire, wherein the appliance body is provided with working voltage through the power board (40). The filter device (20) is a magnetic ring.
6. The cooking appliance of claim 1, wherein, The target ground wire is wound on the filter device (20) with a preset number of turns.
7. The cooking appliance of claim 6, wherein, The target ground wire is threaded on the filter device (20).
8. The cooking appliance of claim 6, wherein, The filter device (20) comprises at least one tunable inductive element.
9. The cooking appliance of claim 1, wherein, The appliance body further comprises a power board box (50), wherein the first ground wire or the filter device is fixed to the power board box (50).
10. The cooking appliance of claim 1, wherein,