Heating disc assembly and food processor
By optimizing the structure and layout of the heating elements in the heating plate, the problem of uneven heat distribution was solved, achieving uniform heating, reducing the risk of burning the bottom and maintaining cooking efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG SHAOXING SUPOR DOMESTIC ELECTRICAL APPLIANCE CO LTD
- Filing Date
- 2025-06-20
- Publication Date
- 2026-07-21
AI Technical Summary
The heating plates of existing food processors have uneven heat distribution, resulting in cold spots near the wiring terminals and hot spots in the middle, which easily leads to food burning. Reducing the heating plate power to reduce burning will prolong the cooking time.
The first and second heating sections are spiral-wound structures, while the middle heating section is a straight structure or a larger spiral-wound structure. Combined with parallel auxiliary heating wires, the pitch and layout of the heating wires are optimized to balance heat differences and avoid excessive heat concentration.
It effectively reduces the chance of the bottom sticking to the pan, while avoiding prolonged cooking time and achieving uniform heating of the heating plate.
Smart Images
Figure CN224522949U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of small household appliance technology, and more specifically, to a heating plate assembly and a food processor. Background Technology
[0002] Current food processors typically use heating plates, but these plates suffer from uneven heat distribution. For example, the area near the two terminals generates less heat, creating a cold zone, while the area between the terminals generates more heat, creating a hot zone. When cooking food, the areas in these hot zones are prone to burning. Some food processors reduce this by lowering the heating plate's power, but this increases cooking time. Summary of the Invention
[0003] This application provides a heating plate assembly and a food processor that can reduce the likelihood of food burning on the bottom without extending the cooking time.
[0004] A heating plate assembly, comprising:
[0005] Disk body;
[0006] A heating wire is located below the disk body and is arranged in a ring along the outer contour of the disk body for heating the disk body. The heating wire includes a first heating segment, a second heating segment, and an intermediate heating segment connecting the first heating segment and the second heating segment. The end of the first heating segment away from the intermediate heating segment is designated as a first terminal, and the end of the second heating segment away from the intermediate heating segment is designated as a second terminal. The first heating segment and the second heating segment are spirally wound, and the intermediate heating segment is configured as a straight structure and / or a spiral wound structure with a pitch greater than that of the first heating segment and the second heating segment.
[0007] The heating plate assembly provided in this application has a first heating section and a second heating section, both of which are spiral wound structures with a small pitch, while the middle heating section is a straight structure and / or a spiral wound structure with a large pitch. This can appropriately increase the heat output of the second heating zone and appropriately reduce the heat output of the first heating zone, thereby balancing the heat difference between the first and second heating zones. This can improve the problem of burning the bottom and also avoid excessively long cooking times.
[0008] Optionally, the pitch of the first heating segment is equal to the pitch of the second heating segment. This ensures that the heat output per unit length is approximately the same for both the first and second heating segments, and also facilitates manufacturing.
[0009] Optionally, the first heating segment and the second heating segment are symmetrically arranged on both sides of the intermediate heating segment. In this way, the first heating segment and the second heating segment have the same length and the same degree of winding density, making the heat generation of the first heating segment and the second heating segment relatively uniform and reducing the heat difference between the first heating segment and the second heating segment.
[0010] Optionally, the intermediate heating section includes two or more sub-heating sections connected in parallel, at least one of which has a straight structure; and / or, at least one of the sub-heating sections has a spiral wound structure with a pitch greater than that of the first heating section and the second heating section. The parallel connection of multiple sub-heating sections ensures sufficient heat output while also dispersing the heat source, preventing excessive heat concentration. Furthermore, the structure of the sub-heating sections can be more diverse to balance the heat difference between the intermediate heating section and the first and second heating sections on either side.
[0011] Optionally, the intermediate heating section includes two or more sub-heating sections connected in series, at least two of which are respectively a straight structure and a spiral winding structure with a pitch greater than that of the first heating section and the second heating section. This arrangement ensures that each sub-heating section has a different heat output and diverse structures, preventing excessive heat concentration and potential scorching.
[0012] Optionally, the heating plate assembly further includes an auxiliary heating wire, which is connected in parallel with the main heating wire. This can improve the overall heat output of the heating plate assembly, making it suitable for high-power applications.
[0013] Optionally, the auxiliary heating wire has a spiral wound structure with a uniform pitch throughout. This ensures uniform heating across all parts of the auxiliary heating wire, thereby increasing overall heat output and facilitating processing.
[0014] Optionally, the central angle corresponding to the intermediate heating section is α, where 60°≤α≤180°. Within this angle range, the length of the intermediate heating section is appropriate to avoid excessive heat causing the bottom to burn.
[0015] Optionally, the pitch of the first heating segment is D, and the intermediate heating segment has a spiral winding structure with a pitch of H, where 1.1D ≤ H ≤ 3D. This allows for appropriate setting of the sparseness of each spiral segment to better balance the heat difference and ensure even heating of the disc.
[0016] Optionally, the plate body includes a contact surface for contacting food, and the contact surface has multiple protrusions. The protrusions can separate the food from the contact surface, reduce the contact area between the food and the contact surface, and make it easier to clean.
[0017] A food processor includes a cup body and a heating plate assembly as described in any of the preceding claims. The heating plate assembly is assembled to the bottom of the cup body, and the heating plate assembly and the cup body form a food processing chamber. This food processor provides even heating, preventing food from burning. Attached Figure Description
[0018] Figure 1 This is a cross-sectional view of the cup assembly of a food processor shown in an exemplary embodiment of this application;
[0019] Figure 2 This is a bottom view of the heating element assembly;
[0020] Figure 3 This is a cross-sectional view of the heating plate assembly, where the cross-section is parallel to the surface of the plate body;
[0021] Figure 4 This is a schematic diagram of the heating wire;
[0022] Figure 5 This is another schematic diagram of the heating wire;
[0023] Figure 6 This is another schematic diagram of the heating element;
[0024] Figure 7 This is another schematic diagram of the heating wire;
[0025] Figure 8 This is another schematic diagram of the heating wire;
[0026] Figure 9 This is a schematic diagram of multiple sub-heating sections connected in series;
[0027] Figure 10 This is a schematic diagram showing the heating wire and the auxiliary heating wire connected in parallel;
[0028] Figure 11 This is another schematic diagram showing the heating wire and the auxiliary heating wire connected in parallel;
[0029] Figure 12 This is a top view of the heating element assembly. Detailed Implementation
[0030] The technical solutions in the embodiments (or "implementations") of this application will be clearly and completely described herein with reference to the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.
[0031] If the embodiments of this application contain terms relating to directional indications or positional relationships (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships and movements between components in a specific posture (as shown in the attached figures); if the specific posture changes, the directional indications or positional relationships will also change accordingly. Furthermore, the terms "first" and "second" used in the embodiments of this application are only for descriptive convenience and should not be construed as indicating or implying relative importance.
[0032] Please refer to Figure 1 , Figure 1 A cross-sectional view of the cup assembly 100 of a food processor shown as an exemplary embodiment of this application.
[0033] The cup assembly 100 includes a cup body 10, a cup base 20, a heating plate assembly 30, and a cup lid 40. The cup body 10 is hollow, forming a food processing cavity 101 within the hollow space, which is used to hold food. The cup base 20 is installed at the bottom of the cup body 10 to support the cup body 10, allowing it to be placed stably on a countertop. The gap between the cup body 10 and the cup base 20 can be sealed with a sealing ring. The cup lid 40 covers the top of the cup body 10.
[0034] The heating plate assembly 30 is housed and assembled within the cup holder 20, serving as the base of the cup body 10. The heating plate assembly 30 and the cup body 10 together form a food processing cavity 101. A sealing ring may be provided between the heating plate assembly 30 and the cup body 10 to seal the gap between them.
[0035] exist Figure 1 In the illustrated embodiment, the cup assembly 100 further includes a stirring blade 50, which is rotatably disposed in the food processing chamber 101 to agitate the food within the chamber. Specifically, the blade shaft of the stirring blade 50 passes through and is rotatably mounted on the heating plate assembly 30. The axial direction of the blade shaft is aligned with the height direction of the cup body 10. The blades of the stirring blade 50 are connected to the blade shaft and located within the food processing chamber 101 for crushing ingredients. The stirring blade 50 enables the cup assembly 100 to have a agitation function, allowing it to prepare various products suitable for different applications, such as soy milk and rice paste.
[0036] It should be noted that the food processor may also include a main unit (not shown). For example, the main unit may be a base-type main unit, which is assembled to the bottom of the cup assembly 100, and the main unit may be detachably assembled with the cup assembly 100. Alternatively, the main unit may be a head-type main unit, which is assembled to the top of the cup assembly 100.
[0037] Please refer to Figure 2 and Figure 3 , Figure 2 This is a bottom view of the heating plate assembly 30. Figure 3 This is a cross-sectional view of the heating plate assembly 30, where the cross-section is parallel to the surface of the plate body 31.
[0038] The heating plate assembly 30 includes a plate body 31 and a heating wire 32. The plate body 31 includes a contact surface 310 for contacting food (see [link]). Figure 1 The contact surface 310 is the bottom surface of the food processing cavity 101. The heating wire 32 is located below the plate 31, on the side of the plate 31 facing away from the contact surface 310. The heating wire 32 is arranged in a ring shape along the outer contour of the plate 31, that is, the heating wire 32 forms a single-loop annular structure with a radius greater than 180° and less than 360°. When energized, the heating wire 32 generates heat to heat the plate 31, and thus the food inside the food processing cavity 101.
[0039] The heating wire 32 includes a first heating zone 32a and a second heating zone 32b, wherein the heat generated by the first heating zone 32a is higher than that generated by the second heating zone 32b. Figure 3 In the illustrated embodiment, the heating wire 32 is generally ring-shaped, including a first terminal (L terminal) and a second terminal (N terminal). The L terminal is used to connect to the live wire, and the N terminal is used to connect to the neutral wire. The middle region of the heating wire 32 is the first heating zone 32a. Figure 2 The shaded area in the upper middle part of the heating wire 32, near the L and N ends, is conducive to heat dissipation. The heat in this area is relatively less than in the middle area, which leads to uneven heat distribution in the heating wire 32, forming a first heating zone 32a and a second heating zone 32b. Figure 2 (The lower half of the non-shaded area). The heating plate assembly 30 can also enclose the tube body 33, with the heating wire 32 installed inside the tube body 33, and the first terminal (L end) and the second terminal (N end) exposed outside the tube body 33.
[0040] The heating wire 32 includes a first heating section 321, a second heating section 322, and an intermediate heating section 323 connecting the first heating section 321 and the second heating section 322. The end of the first heating section 321 away from the intermediate heating section 323 is designated as a first terminal (e.g., L terminal), and the end of the second heating section 322 away from the intermediate heating section 323 is designated as a second terminal (e.g., N terminal).
[0041] To address the uneven heat distribution between the first heating zone 32a and the second heating zone 32b, the first heating segment 321 and the second heating segment 322 are configured as a spiral winding structure. The intermediate heating segment 321 has a straight structure and / or a spiral winding structure with a pitch greater than that of the first heating segment 321 and the second heating segment 322. Here, a straight structure refers to a non-winding structure or can be understood as a straightened spiral winding structure.
[0042] As described above, the first heating section 321 and the second heating section 322 are both spiral wound structures with a small pitch, while the middle heating section 323 is a straight structure and / or a spiral wound structure with a large pitch. This can appropriately increase the heat output of the second heating zone 32b and appropriately reduce the heat output of the first heating zone 32a, thereby balancing the heat difference between the first heating zone 32a and the second heating zone 32b. This can improve the problem of burning the bottom and also avoid excessive cooking time.
[0043] Please refer to Figure 4 and Figure 5 , Figure 4 This is a schematic diagram of the heating wire 32. Figure 5 This is another schematic diagram of heating wire 32.
[0044] exist Figure 4 and Figure 5 In the illustrated embodiment, the pitch of the first heating segment 321 is equal to the pitch of the second heating segment 322. Equal pitch means that the winding density is the same, which makes the heat output of the first heating segment 321 and the second heating segment 322 approximately the same per unit length, and also facilitates processing.
[0045] exist Figure 4 and Figure 5 In the illustrated embodiment, the first heating segment 321 and the second heating segment 322 are symmetrically arranged on both sides of the intermediate heating segment 323. Thus, the first heating segment 321 and the second heating segment 322 have equal lengths and the same degree of winding density, resulting in relatively uniform heat generation from the first heating segment 321 and the second heating segment 322, reducing the heat difference at different locations in the second heating zone 32b.
[0046] exist Figure 4 In the illustrated embodiment, the intermediate heating section 323 is configured as a single, spirally wound structure with a uniform pitch that is greater than that of the first and second heating sections. Figure 5In the illustrated embodiment, the intermediate heating section 323 is configured as a single, flat structure. It should be noted that this flat intermediate heating section 323 is moderately curved along the contour of the disc 31, roughly forming an arc. Of course, depending on the shape of the outer contour of the disc 31, the extended shape of the flat intermediate heating section 323 can vary.
[0047] like Figure 4 As shown, in one embodiment, the central angle corresponding to the intermediate heating section 323 is α, 60°≤α≤180°. For example, the central angle α can be 60°, 70°, 80°, 90°, 100°, 110°, 120°, 130°, 140°, 150°, 160°, 170°, or 180°. Within this angle range, the length of the intermediate heating section 323 is appropriate to avoid excessive heat causing the bottom to burn.
[0048] exist Figure 4 In the illustrated embodiment, both the first heating segment 321 and the second heating segment 322 are spiral wound structures with a pitch of D. The intermediate heating segment 323 is also a spiral wound structure with a pitch of H, where 1.1D ≤ H ≤ 3D. This allows for appropriate adjustment of the density of each spiral segment to better balance the heat difference and ensure even heating of the disc 31.
[0049] Please refer to Figures 6 to 8 , Figure 6 This is another schematic diagram of heating wire 32. Figure 7 This is another schematic diagram of heating wire 32. Figure 8 This is another schematic diagram of heating wire 32.
[0050] exist Figures 6 to 8 In the illustrated embodiment, the intermediate heating section 323 includes two or more sub-heating sections 3230 connected in parallel. The parallel connection of multiple sub-heating sections 3230 can both ensure the amount of heat generated and make the heat source relatively dispersed, avoiding excessive heat concentration.
[0051] exist Figure 6 In the illustrated embodiment, both sub-heating segments 3230 are configured with a spiral winding structure. The pitch of both sub-heating segments 3230 is the same and is set to be greater than the pitch of the first heating segment 321 and the second heating segment 322. Of course, in other embodiments, the pitch of the two or more sub-heating segments 3230 with spiral winding structures may be different, but the pitch of each sub-heating segment 3230 is greater than the pitch of the first heating segment 321 and the second heating segment 322. This can appropriately distribute the heat generated by the intermediate heating segment 323, and it is easier to achieve heat balance compared to the heat generated by the first heating segment 321 and the second heating segment 322.
[0052] exist Figure 7In the illustrated embodiment, both sub-heating segments 3230 are configured to have a straight structure, curving along the outer contour of the disk 31. Two or more sub-heating segments 3230 with a straight structure can make the heat generation of the first heating zone 32a relatively dispersed and even.
[0053] exist Figure 8 In the embodiment shown, one of the two sub-heating sections 3230 is configured to be a straight structure, and the other is configured to be a spiral wound structure. The pitch of the sub-heating section configured to be spiral wound is greater than the pitch of the first heating section 321 and the second heating section 322, so as to ensure heat dispersion and reduce the heat difference between the hot and cold zones.
[0054] It should be noted that in some other embodiments, the specific number of sub-heating segments 3230 can be set according to actual needs, and the structure of each sub-heating segment 3230 can be selected and positioned according to actual needs. For example, only one of the multiple sub-heating segments 3230 may be in a straight structure, while the rest may be in a spiral winding structure, or only one of the multiple sub-heating segments 3230 may be in a spiral winding structure, while the rest may be in a straight structure, or a certain number of sub-heating segments 3230 with a straight structure and a certain number of sub-heating segments 3230 with a spiral winding structure may be combined, etc.
[0055] Please refer to Figure 9 , Figure 9 This is a schematic diagram of multiple sub-heating sections 3230 connected in series.
[0056] In one embodiment, the intermediate heating section 323 includes two or more sub-heating sections 3230 connected in series. At least two of the sub-heating sections 3230 are respectively configured as a straight structure and a spiral wound structure with a pitch greater than that of the first heating section 321 and the second heating section 322. With this configuration, the heat output of each sub-heating section 3230 is different and the structure is diverse, avoiding excessive heat concentration and scorching of the bottom.
[0057] Please refer to Figure 10 and Figure 11 , Figure 10 This is a schematic diagram showing the parallel connection of heating wire 32 and auxiliary heating wire 34. Figure 11 This is another schematic diagram showing the heating wire 32 and the auxiliary heating wire 34 connected in parallel.
[0058] In one embodiment, the heating plate assembly 30 further includes an auxiliary heating wire 34, which is connected in parallel with the heating wire 32. This can improve the overall heat output of the heating plate assembly 30, making it suitable for high-power applications.
[0059] In this embodiment, the auxiliary heating wire 34 has a spiral wound structure with a uniform pitch throughout. This ensures uniform heat distribution throughout the auxiliary heating wire 34, improving overall heat output and facilitating manufacturing. Of course, in other embodiments, the auxiliary heating wire 34 can be segmented into different structures or formed as a single, straight piece.
[0060] Please refer to Figure 12 , Figure 12 This is a top view of the heating plate assembly 30.
[0061] In one embodiment, the contact surface 310 of the plate body 31 has a plurality of protrusions 310a. The plurality of protrusions 310a can, on the one hand, thicken the plate body 31 and improve the prevention of food sticking to the bottom; on the other hand, the protrusions 310a can separate food from the contact surface 310, reducing the contact area between the food and the contact surface 310 and making it easier to clean. The protrusions 310a can be circular, but are not limited to this.
[0062] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.
Claims
1. A heating plate assembly, characterized in that, include: Disk body (31); A heating wire (32) is disposed below the disk body (31) and is arranged in a ring along the outer contour of the disk body (31) for heating the disk body (31). The heating wire (32) includes a first heating section (321), a second heating section (322), and an intermediate heating section (323) connecting the first heating section (321) and the second heating section (322). The end of the first heating section (321) away from the intermediate heating section (323) is designated as a first terminal, and the end of the second heating section (322) away from the intermediate heating section (323) is designated as a second terminal. The first heating section (321) and the second heating section (322) have a spiral winding structure, and the intermediate heating section (323) has a straight structure and / or a spiral winding structure with a pitch greater than that of the first heating section (321) and the second heating section (322).
2. The heating plate assembly according to claim 1, characterized in that, The pitch of the first heating segment (321) is equal to the pitch of the second heating segment (322).
3. The heating plate assembly according to claim 2, characterized in that, The first heating segment (321) and the second heating segment (322) are symmetrically arranged on both sides of the intermediate heating segment (323).
4. The heating plate assembly according to any one of claims 1 to 3, characterized in that, The intermediate heating section (323) includes two or more parallel-connected sub-heating sections (3230), at least one of which has a straight structure; and / or, at least one of which has a spiral winding structure with a pitch greater than that of the first heating section and the second heating section.
5. The heating plate assembly according to any one of claims 1 to 3, characterized in that, The intermediate heating section (323) includes two or more sub-heating sections (3230) connected in series. At least two of the sub-heating sections (3230) are respectively a straight structure and a spiral winding structure with a pitch greater than that of the first heating section and the second heating section.
6. The heating plate assembly according to any one of claims 1 to 3, characterized in that, The heating plate assembly (30) also includes an auxiliary heating wire (34), which is connected in parallel with the heating wire (32).
7. The heating plate assembly according to claim 6, characterized in that, The auxiliary heating wire (34) has a spiral winding structure with a uniform pitch everywhere.
8. The heating plate assembly according to any one of claims 1 to 3, characterized in that, The central angle corresponding to the intermediate heating section (323) is α, 60°≤α≤180°; and / or The pitch of the first heating section is D, and the intermediate heating section is a spiral winding structure with a pitch of H, where 1.1D≤H≤3D.
9. The heating plate assembly according to any one of claims 1 to 3, characterized in that, The plate body (31) includes a contact surface (310) for contacting food ingredients, and the contact surface (310) is provided with a plurality of protrusions (310a).
10. A food processor, characterized in that, The food processor includes a cup body and a heating plate assembly (30) as described in any one of claims 1 to 8, wherein the heating plate assembly (30) is assembled at the bottom of the cup body (10) and the heating plate assembly (30) and the cup body form a food processing cavity (101).