Heating disc assembly and food processor
By creating holes and adding protruding teeth on the heat-conducting components, the problem of uneven heat distribution in the heating plate assembly is solved, achieving balanced heat transfer and reducing the risk of burnt bottom and melting of the heating components.
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
- 2025-04-25
- Publication Date
- 2026-04-21
AI Technical Summary
Existing food processor heating plate components suffer from uneven heat distribution, resulting in cold areas near the wiring terminals and hot areas in the middle, which can easily cause food to burn.
A through hole is made in the heat-conducting component, and multiple convex teeth with toothed inner edges are set in the hole to reduce the contact area with the first heating zone and increase the thermal resistance. The hole and convex teeth achieve balanced heat transfer and avoid heat accumulation.
This results in a more even distribution of heat received by the heating plate, reducing the risk of scorching and minimizing the possibility of the heating element melting.
Smart Images
Figure CN224140656U_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 element assemblies for heating; however, these assemblies suffer from uneven heat distribution. For example, the area near the two terminals receives less heat, creating a cold zone, while the area between the terminals receives more heat, forming a hot zone. When cooking food, the areas in these hot zones are prone to burning. Summary of the Invention
[0003] This application provides a heating plate assembly and a food processor that can make the heat more even and reduce or even avoid the phenomenon of burning the bottom.
[0004] A heating plate assembly, comprising:
[0005] Heating plate, including contact surfaces for contacting food;
[0006] A heating element is disposed on the side of the heating plate facing away from the contact surface. The heating element can generate heat when energized. The heating element includes a first heating area and a second heating area, wherein the heat of the first heating area is higher than that of the second heating area.
[0007] A heat-conducting component is disposed between the heating plate and the heating element, and in contact with the first heating area and the second heating area. The heat-conducting component has a hole at the part corresponding to the first heating area. The hole is opened inside the heat-conducting component and extends through the thickness direction of the heat-conducting component. The hole includes a toothed inner edge.
[0008] The heating plate assembly and food processor provided in this application reduce the contact area between the heat-conducting component and the first heating zone by creating through holes in the heat-conducting component. The through holes also increase thermal resistance, allowing heat to be transferred through the air, thus slowing the transfer of heat from the first heating zone to the heating plate. This results in a more even distribution of heat received by the heating plate from both the first and second heating zones, reducing the likelihood of the food burning. Furthermore, the toothed inner edge of the holes includes multiple protruding teeth, enabling faster heat transfer at the holes and preventing excessive heat accumulation in the first heating zone. This reduces the risk of the heating component melting in the first heating zone.
[0009] Optionally, the toothed inner edge of the hole includes a plurality of spaced-apart protrusions, which are spaced apart in the extending direction of the first heating zone. This allows heat to be transferred to all parts of the first heating zone through the plurality of protrusions in the hole, resulting in more even heat transfer and preventing excessive heat accumulation in the first heating zone, thereby reducing the risk of the heating element melting in the first heating zone.
[0010] Optionally, both the hole and the first heating zone extend around the center of the heat-conducting element; in the radial direction of the heat-conducting element, the inner edge of the tooth shape is located on the edge of the hole away from the center of the heat-conducting element, and the protruding direction of the plurality of teeth is all towards the center of the heat-conducting element. With this configuration, the portions where the teeth connect at the root and the teeth that are separated from each other can transfer a portion of the heat from the first heating zone to the heating plate, preventing excessive heat accumulation in the first heating zone. This reduces the risk of the heating element melting in the first heating zone and ensures more even heat distribution.
[0011] Optionally, both the hole and the first heating zone extend around the center of the heat-conducting element; in the radial direction of the heat-conducting element, the inner edge of the tooth shape is located on the edge of the hole away from the center of the heat-conducting element, and the protruding direction of the plurality of protruding teeth is all towards the center of the heat-conducting element. With this configuration, the portions where the protruding teeth connect at the tooth roots, as well as the separated protruding teeth, can transfer a portion of the heat from the first heating zone to the heating plate. This not only prevents excessive heat accumulation in the first heating zone from causing the heating element to melt, but also slows down heat transfer to a certain extent, resulting in a more balanced heat transfer between the first and second heating zones and reducing the risk of burnt bottom.
[0012] Optionally, the toothed inner edge of the hole includes a plurality of spaced-apart protrusions, at least one of which extends beyond the first heating zone in its extending direction. The protruding length of the protrusions exceeds the first heating zone; relatively longer protrusions have a larger heat transfer area, which is more conducive to transferring heat from the first heating zone.
[0013] Optionally, the first heating zone is configured as an arc-shaped strip structure, and the hole matches the shape of the first heating zone. In the orthographic projection along the thickness direction of the heat-conducting element, the first heating zone includes an outer arc-shaped contour line and an inner arc-shaped contour line. The inner arc-shaped contour line is closer to the center of the heat-conducting element than the outer arc-shaped contour line. The inner edge of the tooth shape includes multiple convex teeth spaced apart, and the projection of the tooth roots of the multiple convex teeth is located between the outer arc-shaped contour line and the inner arc-shaped contour line. The hole can form a heat transfer cavity above the first heating zone. A portion of the heat from the first heating zone can be transferred to the heating plate through the heat-conducting element and the convex teeth. The heat transfer cavity can also slow down the heat transfer from the first heating zone. While transferring heat, it can also slow down the heat transfer, preventing local overheating of the heating plate and avoiding excessive heat accumulation in the first heating zone, which could cause the heating element to melt in the first heating zone.
[0014] Optionally, the hole extends around the center of the heat-conducting element, matching the shape of the first heating zone. The hole has a first end and a second end in the circumferential direction around the center of the heat-conducting element, with the first end and the second end spaced apart by a predetermined angle β, 30°≤β≤270°. Within this angle range, excessive heat loss can be avoided, and overheating of the heatable plate can also be prevented.
[0015] Optionally, the toothed inner edge of the hole includes a plurality of spaced-apart protrusions, each protrusion having a circumferential dimension D around the center of the heat-conducting element, where 1mm ≤ D ≤ 3mm; and / or, the distance between two adjacent protrusions is a preset angle α, where 5° ≤ α ≤ 60°. This dimension D prevents the protrusions from breaking and ensures effective heat transfer. This angle α provides an appropriate heat dissipation gap for the protrusions.
[0016] Optionally, the heat-conducting element has a central hole extending along its thickness at its center, and the hole portion communicates with the central hole. The central hole can increase the space at the location of the hole portion, and some of the protruding teeth can extend towards the central hole to appropriately extend the length of some of the protruding teeth and ensure the heat transfer effect.
[0017] Optionally, the contact surface is provided with 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.
[0018] A food processor includes a cup body and a heating plate assembly as described in any of the above claims. The heating plate assembly is assembled at the bottom of the cup body, forming a food processing chamber together with the cup body. This heating plate assembly provides even heat distribution, minimizing the risk of food burning.
[0019] Optionally, the food processor also includes a mixing blade rotatably disposed in the food processing chamber to blend the food within the chamber. This food processor also features a blending function, making it suitable for various applications such as preparing slurries and rice pastes. Attached Figure Description
[0020] Figure 1 This is a cross-sectional view of the cup assembly of a food processor shown in an exemplary embodiment of this application;
[0021] Figure 2 This is a bottom view of the heating element assembly;
[0022] Figure 3 This is an exploded view of the heating element assembly;
[0023] Figure 4 This is a cross-sectional view of the heating element assembly;
[0024] Figure 5 This is a schematic diagram showing the stacking of heating and heat-conducting components;
[0025] Figure 6 This is a top view of the heating element assembly. Detailed Implementation
[0026] 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.
[0027] 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.
[0028] 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.
[0029] 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 it, allowing the cup body 10 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.
[0030] 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.
[0031] 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 ingredients within the food processing chamber 101. Specifically, the blade shaft of the stirring blade 50 passes through the heating plate assembly 30 and is rotatably mounted thereon. 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 and agitating the ingredients.
[0032] 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 can be detachably assembled to the cup assembly 100 or fixedly connected to 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.
[0033] Please refer to Figures 2 to 4 , Figure 2 This is a bottom view of the heating plate assembly 30. Figure 3 This is an exploded view of the heating plate assembly 30. Figure 4 This is a cross-sectional view of the heating plate assembly 30.
[0034] The heating plate assembly 30 includes a heating plate 31, a heating element 32, and a heat-conducting element 33. The heating plate 31 includes a contact surface 310 for contacting food, which is the bottom surface of the food processing cavity 101. The heating plate 31, the heat-conducting element 33, and the heating element 32 can be welded together using processes such as lead soldering, but are not limited to these methods. The heating plate 31 can be a stainless steel plate, and the heat-conducting element 33 can be an aluminum component, but are not limited to these methods.
[0035] The heating element 32 is disposed on the side of the heating plate 31 facing away from the contact surface 310. The heating element 32 is generally annular and includes a first terminal (L terminal) and a second terminal (N terminal). The L terminal is used to connect the live wire, and the N terminal is used to connect the neutral wire. The heating element 32 generates heat when energized. The heating element 32 includes a first heating area 321 and a second heating area 322. The heat generated by the first heating area 321 is higher than that generated by the second heating area 322.
[0036] exist Figure 2 In the embodiment shown, the region of the heating element 32 near the L end and N end is the second heating region 322. Figure 2 The unshaded area on the left side of the heating element 32 is the first heating zone 321. Figure 2 (The shaded area on the right side). A gap exists between the two terminals of the heating element 32. Therefore, the area of the heating element 32 near the L and N terminals is conducive to heat dissipation, and the heat generated here is relatively less than in the middle area. This results in the heating element 32 forming a first heating zone 321 and a second heating zone 322 with uneven heat distribution. It should be noted that the first heating zone 321 and the second heating zone 322 may differ depending on the structural form of the heating element 32.
[0037] A heat-conducting element 33 is disposed between the heating plate 31 and the heating element 32, and contacts the first heating area 321 and the second heating area 322. It is used to conduct heat from the heating element 32 to the heating plate 31. The heat-conducting element 33 has a toothed hole 330 at the portion corresponding to the first heating area 321. The hole 330 is formed inside the heat-conducting element 33 and is located in the thickness direction of the heat-conducting element 33. Figure 4 The hole 330 extends through the Z-axis and includes a toothed inner edge. The phrase "formed inside the heat-conducting element 33" means that the outline of the hole 330 is within the outer outline of the heat-conducting element 33, and the hole 330 does not create a notch at the outer edge of the heat-conducting element 33. This toothed inner edge is the toothed outline of the hole 330.
[0038] As described above, by creating a through hole 330 in the heat-conducting element 33, the contact area between the heat-conducting element 33 and the first heating zone 321 can be reduced. Furthermore, the through hole 330 increases thermal resistance, allowing heat to be transferred through the air in the hole 339, thus slowing down the transfer of heat from the first heating zone 321 to the heating plate 31. This results in a more balanced distribution of heat received by the heating plate 31 from the first heating zone 321 and the second heating zone 322, which helps reduce the occurrence of burnt-out phenomena. Additionally, since the toothed inner edge of the hole 330 includes multiple protruding teeth 330a, faster heat transfer is achieved at the hole 330 through these teeth, preventing heat accumulation in the first heating zone. This reduces the risk of the heating element 32 melting in the first heating zone 321. The number of protruding teeth 330a is not limited and can be selected based on the size of the first heating zone 321. Multiple protruding teeth 330a can be evenly arranged, but are not limited to this arrangement.
[0039] Please refer to Figure 5 , Figure 5 This is a schematic diagram showing the heat-conducting element 33 and the heat-generating element 32 stacked together.
[0040] In one embodiment, the toothed inner edge of the hole 330 includes a plurality of spaced-apart protrusions 330a, at least one of the protrusions 330a extending beyond the first heating zone 321 in its extending direction. This arrangement results in the protruding length of the protrusions 330a exceeding the first heating zone 321, and the relatively longer protrusions 330a have a larger heat transfer area, which is more conducive to heat transfer in the first heating zone.
[0041] exist Figure 5 In the embodiment shown, multiple protrusions 330a extend beyond the first heating zone 321 along their own protrusion direction.
[0042] In one embodiment, a plurality of protrusions 330a are arranged at intervals along the extending direction of the first heating zone 321. This arrangement ensures that all parts of the first heating zone 321 can transfer heat to the heating plate 31 through the protrusions 330a of the hole 330, resulting in more even heat transfer and preventing excessive heat accumulation in the first heating zone 321. This reduces the risk of the heating element 32 melting in the first heating zone 321.
[0043] exist Figure 5 In the illustrated embodiment, the first heating area 321 is configured as an arc-shaped strip structure, and the shape of the hole 330 matches the shape of the first heating area 321, being an arc-shaped hole. Along the thickness direction of the heat-conducting element 33 ( Figure 5In the orthographic projection (perpendicular to the plane of the paper), the first heating zone 321 includes an outer arc-shaped contour line 321a and an inner arc-shaped contour line 321b, wherein the inner arc-shaped contour line 321b is located inside the outer arc-shaped contour line 321a and is closer to the center of the heat-conducting element 33 than the outer arc-shaped contour line 321a. The toothed inner edge of the hole portion 330 includes a plurality of spaced protrusions 330a, and the projection of the tooth roots of the plurality of protrusions 330a is located between the outer arc-shaped contour line 321a and the inner arc-shaped contour line 321b. In other words, the hole 330 can form a heat transfer cavity above the first heating zone 321. A portion of the heat from the first heating zone 321 can be transferred to the heating plate 31 through the heat-conducting element 33 and the protrusions 330a. The heat transfer from the first heating zone can also be slowed down through the heat transfer cavity (the gap between the protrusions 330a and the hole 330). While transferring heat, the heat transfer can also be slowed down to prevent the heating plate 31 from overheating locally. At the same time, it can also prevent the heat from accumulating too much heat in the first heating zone 321, which could cause the heating element 32 to melt in the first heating zone. Figure 5 The outer arc-shaped contour line 321a in the middle coincides with the outer contour line of the heat-conducting element 33, but is not limited to this.
[0044] exist Figure 5 In the illustrated embodiment, both the hole 330 and the first heating zone 321 extend around the center of the heat-conducting element 33. In the radial direction of the heat-conducting element 33, the inner edge of the tooth shape is located on the edge of the hole 330 away from the center of the heat-conducting element 33, and the protruding direction of the plurality of protruding teeth 330a is towards the center of the heat-conducting element 33. With this configuration, the plurality of protruding teeth 330a are connected at the tooth root, which corresponds to the first heating zone 321. The tooth root and the multiple protruding teeth 330a, which are separated from each other, can transfer a portion of the heat from the first heating zone 321 to the heating plate 31, preventing excessive heat accumulation in the first heating zone 321. This reduces the risk of the heating element 32 melting in the first heating zone 321. Simultaneously, the separation of the multiple protruding teeth 330a and the gaps between adjacent protruding teeth 330a can slow down the transfer of some heat from the first heating zone 321, which helps prevent scorching.
[0045] In one embodiment, such as Figure 5 As shown, the heat-conducting component 33 has a central hole 331 extending along the thickness direction at its center. The central hole 331 serves as a clearance hole, allowing other components, such as a cutter shaft, to pass through. The hole portion 330 communicates with the central hole 331. This arrangement increases the space at the location of the hole portion 330, allowing some of the protruding teeth 330a to extend towards the central hole 331, thereby appropriately lengthening the length of some of the protruding teeth 330a and ensuring heat transfer efficiency.
[0046] In one embodiment, the hole 330 is disposed around the center O of the heat-conducting element 33 and extends circumferentially along the heat-conducting element 33, matching the shape of the first heating area 321. The hole 330 has a first end 330b and a second end 330c circumferentially around the center O of the heat-conducting element 33, with the first end 330b and the second end 330c spaced apart by a predetermined angle β, 30°≤β≤270°. This angle β is set according to the size of the first heating area 321. Within this angle range, excessive heat loss can be avoided, and overheating of the heatable plate 31 can be prevented. In an alternative embodiment, the angle β can be set to 30°, 50°, 80°, 100°, 120°, 150°, 200°, 230°, or 270°, but is not limited to these.
[0047] In one embodiment, the circumferential dimension of each of the protrusions 330a around the center O of the heat conductor 33 is D, where 1mm ≤ D ≤ 3mm. This dimension D can prevent the protrusions 330a from breaking and also ensures the heat transfer effect. In an alternative embodiment, the dimension D can be set to 1mm, 1.5mm, 2mm, 2.5mm, or 3mm.
[0048] In one embodiment, two adjacent protrusions 330a are spaced apart by a predetermined angle α, where 5° ≤ α ≤ 60°. This angle α provides a suitable heat dissipation gap for the protrusions 330a. In an alternative embodiment, the angle α can be set to 5°, 10°, 20°, 30°, 40°, 50°, or 60°, but is not limited to these.
[0049] Please refer to Figure 6 , Figure 6 This is a top view of the heating plate assembly 30.
[0050] In one embodiment, the contact surface 310 of the heating plate 31 has a plurality of protrusions 310a. These protrusions 310a can, on the one hand, thicken the plate body 1, improving the prevention of food sticking to the bottom; on the other hand, the protrusions 310a can separate the food from the contact surface 310, reducing the contact area between the food and the contact surface 310, making it easier to clean. The protrusions 310a can be circular, but are not limited to this.
[0051] 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 heat disc assembly, characterized by, include: Heating plate (31), including contact surface (310) for contacting food; A heating element (32) is disposed on the side of the heating plate (31) facing away from the contact surface (310). The heating element (32) can generate heat when energized. The heating element (32) includes a first heating area (321) and a second heating area (322). The heat of the first heating area (321) is higher than that of the second heating area (322). A heat-conducting element (33) is disposed between the heating plate (31) and the heating element (32), and is in contact with the first heating area (321) and the second heating area (322). A hole (330) is provided at the part of the heat-conducting element (33) corresponding to the first heating area (321). The hole (330) is opened inside the heat-conducting element (33) and penetrates in the thickness direction of the heat-conducting element (33). The hole (330) includes a toothed inner edge.
2. The heat disc assembly of claim 1, wherein, The toothed inner edge of the hole (330) includes a plurality of spaced protrusions (330a), which are spaced apart in the extension direction of the first heating zone (321).
3. The heat disc assembly of claim 2, wherein, Both the hole (330) and the first heating area (321) extend around the center of the heat conductor (33); in the radial direction of the heat conductor (33), the toothed inner edge is located on the side edge of the hole (330) away from the center of the heat conductor (33), and the protrusion direction of the plurality of protrusions (330a) is all towards the center of the heat conductor (33).
4. The heat disc assembly of claim 1, wherein, The toothed inner edge of the hole (330) includes a plurality of spaced protrusions (330a), at least one of the protrusions (330a) extending beyond the first heating area (321) in the extending direction of the protrusion (330a).
5. The heat disc assembly of claim 1, wherein, The first heating area (321) is configured as an arc-shaped strip structure. The hole (330) matches the shape of the first heating area (321). In the orthographic projection along the thickness direction of the heat-conducting element (33), the first heating area (321) includes an outer arc-shaped contour line (321a) and an inner arc-shaped contour line (321b). The inner arc-shaped contour line (321b) is closer to the center of the heat-conducting element (33) than the outer arc-shaped contour line (321a). The toothed inner edge includes a plurality of convex teeth (330a) spaced apart. The projection of the tooth roots of the plurality of convex teeth (330a) is located between the outer arc-shaped contour line (321a) and the inner arc-shaped contour line (321b).
6. The heat disc assembly of claim 1, wherein, The hole (330) extends around the center of the heat conductor (33) and matches the shape of the first heating area (321). The hole (330) has a first end (330b) and a second end (330c) in the circumferential direction around the center of the heat conductor (33). The first end (330b) and the second end (330c) are spaced apart by a preset angle β, 30°≤β≤270°.
7. The heat disc assembly of claim 6, wherein, The toothed inner edge of the hole (330) includes a plurality of spaced protrusions (330a), each of which has a circumferential dimension D around the center of the heat conductor (33), where 1mm≤D≤3mm; and / or, the two adjacent protrusions (330a) are spaced apart by a preset angle α, where 5°≤α≤60°.
8. The heat disc assembly according to any one of claims 1 to 7, wherein, The heat-conducting element (33) has a central hole (331) extending along the thickness direction at its center, and the hole portion (330) communicates with the central hole (331); and / or The contact surface (310) is provided with a plurality of protrusions (310a).
9. A food processor, characterized in that, The food processor includes a cup body (10) 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 together with the cup body (10) forms a food processing cavity (101).
10. The food processor of claim 9, wherein, The food processor also includes a mixing blade (50), which is rotatably disposed in the food processing chamber (101) to mix the food in the food processing chamber (101).