Heating disc assembly and food processor

Abstract

The utility model relates to a heating disc assembly and a food processor. The heating disc device comprises a heating disc, a heating piece, a heat insulation piece and a heat conduction piece. The heating element is arranged on one side, back to the contact surface, of the heating disc, the heating element can generate heat after being electrified, the heating element comprises a first heating area and a second heating area, and heat of the first heating area is higher than that of the second heating area. The heat insulation part and the heat conduction part are stacked between the heating disc and the heating part, the heat insulation part corresponds to the first heating area, the heat conductivity of the heat insulation part is smaller than that of the heat conduction part, and the heat conduction part comprises a first heat conduction part corresponding to the first heating area and a second heat conduction part corresponding to the second heating area. The first heat conduction part is provided with a plurality of heat exchange channels and spacing parts located between the adjacent heat exchange channels, the first heat conduction part and the heat insulation part are located between the first heating area and the heating disc, and the second heat conduction part is located between the second heating area and the heating disc. The heat of the heating disc assembly is more balanced, and the probability of the bottom pasting phenomenon can be reduced.

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] Existing cooking appliances 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 insulation component and a heat conduction component are stacked between the heating plate and the heating element. The heat insulation component is disposed corresponding to the first heating area and has a thermal conductivity lower than that of the heat conduction component. The heat conduction component includes a first heat conduction portion corresponding to the first heating area and a second heat conduction portion corresponding to the second heating area. The first heat conduction portion is provided with multiple heat exchange channels and a spacer between adjacent heat exchange channels. The first heat conduction portion and the heat insulation component are located between the first heating area and the heating plate, and the second heat conduction portion is located between the second heating area and the heating plate.

[0008] The heating plate assembly and food processor provided in this application utilize a heat-conducting component to transfer heat from the heating element to the heating plate. To prevent overheating and scorching of the bottom of the heating plate corresponding to the first heating zone, a heat exchange channel and a spacer are provided in the first heat-conducting component. Simultaneously, a heat insulation component is also provided corresponding to the first heating zone. Although the heat of the first heating zone is higher than that of the second heating zone, the heat transfer from the first heating zone is blocked or slowed down by the heat insulation component and the heat exchange channel. This increases the thermal resistance and reduces the heat transfer rate when heat is transferred from the first heating zone to the heating plate, resulting in more even heating of the heating plate and preventing localized overheating and scorching. Furthermore, a spacer is provided between the first heating zone and the heating plate, which can transfer some heat, preventing insufficient heat transfer from the first heating zone to the heating plate and the risk of heat accumulation in the first heating zone leading to melting.

[0009] Optionally, the thickness of the first heat-conducting part is less than the thickness of the second heat-conducting part. This provides assembly space for the heat insulation component and also helps the second heat-conducting part maintain contact with the second heating area, ensuring the heat transfer efficiency of the second heating area.

[0010] Optionally, the heat insulation element is disposed on the side of the first heat-conducting portion facing the heating element. In this way, when the first heat-conducting portion contacts the heating plate, since the thermal conductivity of the first heat-conducting portion is greater than that of the heat insulation element, the heat transferred to the heating plate by the first and second heat-conducting portions is more even, which can avoid the generation of thermal marks on the contact surface of the heating plate.

[0011] Optionally, the thickness difference between the first heat-conducting portion and the second heat-conducting portion is equal to the thickness of the insulation component. This keeps the insulation component flush with the second heat-conducting portion, facilitating assembly and preventing heat loss.

[0012] Optionally, the contact surface is provided with multiple protrusions. These protrusions can thicken the heating plate, improving the prevention of scorching; furthermore, they can separate the food from the contact surface, reducing the contact area and making cleaning easier.

[0013] Optionally, the heat insulation element and the first heat-conducting portion are arranged around the center of the heat-conducting element and are adapted to the shape of the first heating area. This ensures that the heat in the first heating area is more evenly distributed under the heat transfer effect of the heat insulation element and the first heat-conducting portion.

[0014] Optionally, the heat insulation element is arc-shaped, and the central angle of the heat insulation element is β, where 30°≤β≤270°. Within this angle range, it can both avoid excessive heat loss and effectively block heat to prevent the heated plate from overheating.

[0015] Optionally, the spacing portion comprises multiple protruding teeth extending radially outward along the heat-conducting element. These protruding teeth are spaced apart, forming a heat exchange channel between adjacent teeth. Each protruding tooth has a circumferential dimension D around the center of the heat-conducting element, where 1mm ≤ D ≤ 3mm; and / or, a preset angle α is provided between adjacent teeth, where 5° ≤ α ≤ 60°. This dimension D prevents the protruding teeth from breaking and ensures effective heat dissipation. The angle α provides an appropriate heat dissipation gap between the teeth.

[0016] 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 at the bottom of the cup body, forming a food processing chamber together with the cup body. The heating plate assembly of this food processor provides even heat distribution, preventing food from burning.

[0017] Optionally, the food processor also includes a mixing blade rotatably disposed in the food processing chamber to process the food within the chamber. This food processor features a blending function, making its cooking capabilities more comprehensive. 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 an exploded view of the heating element assembly;

[0021] Figure 4 This is a cross-sectional view of the heating element assembly;

[0022] Figure 5 This is a top view of the heating element assembly. Detailed Implementation

[0023] 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.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] 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.

[0028] 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. 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 the ingredients.

[0029] 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 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.

[0030] 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.

[0031] The heating plate assembly 30 includes a heating plate 31, a heating element 32, a heat-conducting element 33, and a heat-insulating element 34. 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, the heat-insulating element 34, and the heating element 32 can be welded together using a lead soldering process, but are not limited to this method. 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 this method.

[0032] 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.

[0033] 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.

[0034] A heat-conducting component 33 and a heat-insulating component 34 are stacked between a heating plate 31 and a heating element 32. The thermal conductivity of the heat-insulating component 34 is less than that of the heat-conducting component 33. The heat-insulating component 34 includes, but is not limited to, a stainless steel component. The heat-insulating component 34 is correspondingly disposed to the first heating area 321. The heat-conducting component 33 includes a first heat-conducting portion 331 corresponding to the first heating area 321 and a second heat-conducting portion 332 corresponding to the second heating area 322. The first heat-conducting portion 331 is provided with a heat exchange channel 331a and a spacer portion 331b located between adjacent heat exchange channels. The first heat-conducting portion 331 and the heat-insulating component 34 are located between the first heating area 321 and the heating plate 31, and the second heat-conducting portion 332 is located between the second heating area 322 and the heating plate 31.

[0035] As described above, the heat-conducting component 33 is used to transfer the heat from the heating element 32 to the heating plate 31. To prevent the heating plate 31 from overheating and causing scorching at the corresponding part of the first heating zone 321, a heat exchange channel 331a and a spacer 331b are provided in the first heat-conducting part 331 of the heat-conducting component 33. At the same time, the heat insulation component 34 is also provided corresponding to the first heating zone 321. This ensures that although the heat of the first heating zone 321 is higher than that of the second heating zone 322, the heat of the first heating zone 321 is absorbed by the heat insulation component during the transfer process. The heat exchange channel 331a and 34 block or slow down the heat exchange, so the thermal resistance increases and the heat transfer rate decreases when heat is transferred from the first heating zone 321 to the heating plate 31. The heating plate 31 is heated evenly, avoiding local overheating and scorching. In addition, a spacer 331b is provided between the first heating zone 321 and the heating plate 31. The spacer 331b can transfer some heat, avoiding the risk of insufficient heat being transferred from the first heating zone 321 to the heating plate 31 and the risk of heat accumulating in the first heating zone 321 and causing melting.

[0036] In one embodiment, the thickness of the first heat-conducting portion 331 is less than the thickness of the second heat-conducting portion 332. That is, the thickness of the first heat-conducting portion 331 is smaller, which provides assembly space for the heat insulation component 34 and also helps the second heat-conducting portion 332 to maintain contact with the second heating area 322, ensuring the heat transfer efficiency of the second heating area.

[0037] In an alternative embodiment, a groove may be provided at the location corresponding to the first heating zone 321 on the heat-conducting element 33, thereby creating a thickness difference in the heat-conducting element 33. Alternatively, a bevel may be formed on the heat-conducting element 33, thereby creating a thickness difference in the heat-conducting element 33. The shape of the heat insulation element 34 may be configured to adapt to the shape of the accommodating space.

[0038] In this embodiment, the heat insulation element 34 is disposed on the side of the first heat-conducting portion 331 facing the heating element 32. That is, the first heat-conducting portion 331 is in contact with the heating plate 31. Since the thermal conductivity of the first heat-conducting portion 331 is greater than that of the heat insulation element 34, the heat transferred to the heating plate by the first heat-conducting portion 331 and the second heat-conducting portion 332 is more even, which can avoid the generation of thermal marks on the contact surface 310 of the heating plate 31.

[0039] In one embodiment, the thickness difference between the first heat-conducting part 331 and the second heat-conducting part 332 is equal to the thickness of the heat insulation member 34, so that the heat insulation member 34 and the second heat-conducting part 332 can be kept flush, which facilitates assembly and avoids heat loss.

[0040] Please continue to refer to this. Figure 3The heat insulation element 34 and the first heat-conducting part 331 are arranged around the center of the heat-conducting element 33, and are adapted to the shape of the first heating area 321. In the illustrated embodiment, the first heating area 321 is arc-shaped, and both the heat insulation element 34 and the first heat-conducting part 331 are set as arc-shaped structures. This ensures that the heat in the first heating area 321 is more evenly distributed under the heat transfer effect of the heat insulation element 34 and the first heat-conducting part 331.

[0041] In one embodiment, the heat insulation element 34 is arc-shaped, and the central angle corresponding to the heat insulation element 34 is β, where 30°≤β≤270°. This angle β is set according to the size of the first heating zone 321. Within this angle range, it can avoid excessive heat loss and effectively block heat to prevent the heating plate 31 from overheating. 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.

[0042] In one embodiment, the spacer portion 331b comprises a plurality of protruding teeth extending radially outward along the heat-conducting element 33. These protruding teeth are spaced apart, and a heat exchange channel 331a is formed between adjacent protruding teeth. The circumferential dimension of each protruding tooth around the center O of the heat-conducting element is D, where 1 mm ≤ D ≤ 3 mm. This dimension D prevents the protruding teeth from breaking and ensures effective heat dissipation. In an alternative embodiment, the dimension D can be set to 1 mm, 1.5 mm, 2 mm, 2.5 mm, or 3 mm.

[0043] In one embodiment, the distance between two adjacent protrusions is a preset angle α, where 5° ≤ α ≤ 60°. This angle α provides adequate heat dissipation clearance for the teeth. 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.

[0044] exist Figure 3 In the embodiment shown, the heat-conducting component 33 has a central hole 330 extending along the thickness direction at its center. The central hole 330 serves as a clearance hole for other components, such as a cutter shaft, to pass through.

[0045] It should be noted that the spacer 331b is not limited to Figure 3 As shown in some other embodiments, the spacer 331b may be arc-shaped and arranged radially from the inside to the outside at the first heat-conducting portion 331. The arc-shaped gap between two adjacent arc-shaped spacers 331b is the heat exchange channel 331a. Alternatively, the heat exchange channel 331a may be configured as through holes that are isolated from each other and do not communicate with each other, with the portion between each through hole being the spacer 331b.

[0046] Please refer to Figure 5 , Figure 5 This is a top view of the heating plate assembly 30.

[0047] 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 heating plate 31 and improve the prevention of food burning; 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 and facilitating cleaning. The protrusions 310a can be circular, but are not limited to this.

[0048] 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 insulation component (34) and a heat conduction component (33) are stacked between the heating plate (31) and the heating element (32). The heat insulation component (34) is disposed corresponding to the first heating area (321) and has a thermal conductivity lower than that of the heat conduction component (33). The heat conduction component (33) includes a first heat conduction portion (331) corresponding to the first heating area (321) and a second heat conduction portion (332) corresponding to the second heating area (322). The first heat conduction portion (331) is provided with a plurality of heat exchange channels (331a) and a spacer portion (331b) located between adjacent heat exchange channels. The first heat conduction portion (331) and the heat insulation component (34) are located between the first heating area (321) and the heating plate (31), and the second heat conduction portion (332) is located between the second heating area (322) and the heating plate (31).

2. The heat disc assembly of claim 1, wherein, The thickness of the first heat-conducting part (331) is less than the thickness of the second heat-conducting part (332).

3. The heat disc assembly of claim 2, wherein, The heat insulation element (34) is located on the side of the first heat-conducting part (331) facing the heat-generating element (32).

4. The heat disc assembly of claim 2, wherein, The thickness difference between the first heat-conducting part (331) and the second heat-conducting part (332) is equal to the thickness of the heat insulation component (34).

5. The heating plate assembly according to claim 1, characterized in that, The contact surface (310) is provided with a plurality of protrusions (310a).

6. The heat disc assembly of claim 1, wherein, The heat insulation element (34) and the first heat-conducting part (331) are arranged around the center of the heat-conducting element (33) and are adapted to the shape of the first heat-generating area (321).

7. The heat disc assembly of claim 6, wherein, The heat insulation element (34) is arc-shaped, and the central angle of the heat insulation element (34) is β, 30°≤β≤270°.

8. The heat disc assembly according to any one of claims 1 to 7, wherein, The spacer (331b) consists of a plurality of protruding teeth extending radially outward along the heat-conducting element (33). The plurality of protruding teeth are spaced apart, and the heat exchange channel (331a) is formed between two adjacent protruding teeth. The circumferential dimension of each protruding tooth around the center of the heat-conducting element (33) is D, 1mm≤D≤3mm; and / or, the spacer between two adjacent protruding teeth is a preset angle α, 5°≤α≤60°.

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 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 process the food in the food processing chamber (101).

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