Heating disc assembly and food processor

Abstract

The utility model relates to a heating disc assembly and a food processor. The heating disc assembly comprises a heating disc, a heating piece, a heat insulation piece and a heat conduction piece. The heating element is arranged on one side, opposite 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 the heat of the first heating area is higher than that of the second heating area. The heat insulation piece and the heat conduction piece are stacked between the heating piece and the heating disc, the heat conductivity of the heat insulation piece is smaller than that of the heat conduction piece, the heat insulation piece is arranged corresponding to the first heating area and comprises a heat exchange channel and a heat insulation part, and the heat conduction piece 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 and the heat insulation part are located between the heating part and the heating disc, and the second heat conduction part is located between the heating part and the heating disc. The heating disc assembly is balanced in heat, and the bottom pasting phenomenon is reduced or even avoided.

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 insulation component and a heat conduction component are stacked between the heating element and the heating plate. The thermal conductivity of the heat insulation component is less than that of the heat conduction component. The heat insulation component is disposed corresponding to the first heating area and includes a heat exchange channel and a heat insulation part. The heat conduction component includes 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 and the heat insulation component are located between the heating element and the heating plate, and the second heat conduction part is located between the heating element and the heating plate.

[0008] The heating plate assembly provided in this application has a heat insulation component corresponding to the first heating zone. The heat from the first heating zone is transferred to the heating plate through the heat insulation component and the first heat-conducting part. Since the heat insulation component has a low thermal conductivity and is also provided with a heat exchange channel and a heat insulation part, the thermal resistance increases when the heat is transferred to the heating plate through the heat insulation component and the first heat-conducting part. The heat is blocked or slowed down by the heat exchange channel and the heat insulation part, which reduces the rate at which the heat is transferred from the first heating zone to the heating plate. This is beneficial for the heating plate to be heated evenly and reduces the risk of overheating or burning at the part of the heating plate corresponding to the first heating zone.

[0009] Optionally, the thickness of the first heat-conducting portion is less than the thickness of the second heat-conducting portion. This provides assembly space for the heat insulation component and also facilitates contact between the second heat-conducting portion and the second heat-generating area.

[0010] Optionally, the heat insulation component is disposed on the side of the first heat-conducting portion facing the first heating area, and the thickness difference between the first heat-conducting portion and the second heat-conducting portion is greater than or equal to the thickness of the heat insulation component. If the thickness difference is equal to the thickness of the heat insulation component, the heat insulation component and the second heat-conducting portion remain flush, facilitating assembly. If the thickness difference is greater than the thickness of the heat insulation component, a gap will be formed on the side of the heat insulation component facing the first heating area and / or the side away from the first heating area, further increasing thermal resistance. In addition, through the contact between the heat-conducting component and the heating plate, the heat-conducting component can distribute heat evenly and can also avoid the generation of thermal marks on the contact surface of the heating plate due to uneven heat distribution.

[0011] Optionally, the heat insulation element is arc-shaped to match the shape of the first heating area. This allows the heat insulation element to fit more closely over the first heating area, thus better blocking heat from the first heating area.

[0012] Optionally, the heat exchange channel includes a plurality of through holes arranged along the length of the heat insulation member and extending along the thickness of the heat insulation member. The plurality of through holes are arranged sequentially along the length of the heat insulation member, which allows the heat in the first heating zone to be transferred relatively evenly, avoiding local overheating and melting.

[0013] Optionally, the heat insulation element is arc-shaped, including an inner arc edge and an outer arc edge surrounding the inner arc edge. Among the plurality of through holes, one of two adjacent through holes radially extends to the inner arc edge, and the other radially extends to the outer arc edge. The plurality of through holes alternately extend to the inner and outer arc edges of the heat insulation element, which makes the heat transferred to various parts of the heat insulation element relatively even, thereby making the heat transferred to the heating plate more even.

[0014] Optionally, the distance between the through hole extending radially to the outer arc edge and the inner arc edge is D1, where 0.8mm ≤ D1 ≤ 3mm. This dimension can prevent the heat insulation component from deforming or breaking at the inner arc edge.

[0015] Optionally, the distance between the through hole extending radially to the inner arc edge and the outer arc edge is D2, where 0.8mm ≤ D2 ≤ 3mm. This dimension can prevent the heat insulation component from deforming or breaking at the outer arc edge.

[0016] Optionally, the dimension of each through hole in the extending direction of the thermal insulation member is W, where 0.8mm ≤ W ≤ 5mm. This dimension ensures that the solid area of ​​the thermal insulation member is approximately equal to the area of ​​the through hole, thus avoiding excessive thermal resistance.

[0017] Optionally, the central angle corresponding to the heat insulation component is β, where 30°≤β≤270°. Within this angle range, the circumferential length of the heat insulation component is appropriate, which can both avoid excessive heat loss and effectively block heat to prevent the heating plate from overheating.

[0018] Optionally, the heat insulation component is integrally formed into a series of continuous Z-shaped structures to form the heat exchange channels and the heat insulation parts. This heat insulation component has a simple structure, is easy to process, and can form alternating heat exchange channels and heat insulation parts. The uniform arrangement of both ensures relatively uniform heat transfer in all parts of the heat insulation component.

[0019] Optionally, the contact surface is provided with multiple protrusions. These protrusions can, on the one hand, thicken the heating plate and improve the prevention of scorching; on the other hand, they can separate the food from the contact surface, reducing the contact area and making cleaning easier.

[0020] 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, and the heating plate assembly and the cup body together form a food processing chamber. This food processor provides even heat distribution and minimizes the risk of food burning.

[0021] Optionally, the food processor also includes a mixing blade, which is rotatably disposed in the food processing chamber to blend the ingredients within the chamber. This food processor also has a blending function, making it suitable for various applications such as making soy milk and rice paste. Attached Figure Description

[0022] Figure 1 This is a cross-sectional view of the cup assembly of a food processor shown in an exemplary embodiment of this application;

[0023] Figure 2 This is a bottom view of the heating element assembly;

[0024] Figure 3 This is an exploded view of the heating element assembly;

[0025] Figure 4 This is a cross-sectional view of the heating element assembly;

[0026] Figure 5 This is the front view of the thermal insulation component;

[0027] Figure 6 This is a top view of the heating element assembly. Detailed Implementation

[0028] 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.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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 to have a agitation function, allowing for the preparation of various applications such as soy milk and rice paste.

[0034] 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.

[0035] Please refer to Figures 2 to 5 , 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. Figure 5 This is the front view of the thermal insulation component 34.

[0036] 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 processes such as lead soldering, but are not limited to these methods. The heating plate 31 can be made of stainless steel, the heat-conducting element 33 can be made of aluminum, and the heat-insulating element 34 can be made of stainless steel, but are not limited to these methods.

[0037] 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 generates heat when energized. The heating element 32 includes a first heating area 321 and a second heating area 322, with the heat generated by the first heating area 321 being higher than that of the second heating area 322. The heating element 32 is generally ring-shaped and includes 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.

[0038] 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 middle section), the middle area 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.

[0039] A heat insulation component 34 and a heat-conducting component 33 are stacked between the heating plate and the heating element 32, wherein the thermal conductivity of the heat insulation component 34 is less than that of the heat-conducting component 33. The heat insulation component 34 is provided corresponding to the first heating area 321 and includes a heat exchange channel 34a and a heat insulation portion 34b. 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 and the heat insulation component 34 are located between the heating element 32 and the heating plate 31, and the second heat-conducting portion 332 is located between the heating element 32 and the heating plate 31.

[0040] As described above, the heat insulation component 34 is provided corresponding to the first heating zone 321. The heat from the first heating zone 321 is transferred to the heating plate 31 through the heat insulation component 34 and the first heat-conducting part 331. Since the heat insulation component 34 has a low thermal conductivity and is provided with a heat exchange channel 34a and a heat insulation part 34b, the thermal resistance increases when the heat is transferred to the heating plate 31 through the heat insulation component 34 and the first heat-conducting part 331. The heat is blocked or slowed down by the heat exchange channel 34a and the heat insulation part 34b, which reduces the rate at which the heat is transferred from the first heating zone to the heating plate. This is beneficial for the heating plate to be heated evenly and reduces the risk of overheating or burning at the part of the heating plate 31 corresponding to the first heating zone 321.

[0041] In one embodiment, the thickness of the first heat-conducting portion 331 is less than the thickness of the second heat-conducting portion 332. The relatively small thickness of the first heat-conducting portion 331 provides assembly space for the heat insulation component 34 and also facilitates contact between the second heat-conducting portion 332 and the second heating area 322. For example, a groove can be provided in the first heat-conducting portion 331 to reduce its thickness.

[0042] exist Figure 4 In the illustrated embodiment, the heat insulation element 34 is disposed on the side of the first heat-conducting portion 331 facing the heating element 32. The thickness difference between the first heat-conducting portion 331 and the second heat-conducting portion 332 is equal to the thickness of the heat insulation element 34. This allows the heat insulation element 34 to be flush with the second heat-conducting portion 332, facilitating assembly. It also ensures that the heat transfer distance from the first heating area 321 to the heat insulation element 34 and the heat transfer distance from the second heating area 322 to the second heat-conducting portion 332 are equal. Furthermore, since the thermal conductivity of the first heat-conducting portion 331 is greater than that of the heat insulation element 34, the heat transferred through the first heat-conducting portion 331 and the second heat-conducting portion 332 is more evenly distributed. Therefore, by having the heat insulation element 34 contact the first heating area 321 and the first heat-conducting portion 331 contact the heating plate 31, thermal marks can be avoided on the contact surface 310 of the heating plate 31 due to uneven heat distribution.

[0043] In another embodiment, the thickness difference between the first heat-conducting portion 331 and the second heat-conducting portion 332 is greater than the thickness of the heat insulation member 34. This creates a gap between the heat insulation member 34 and the first heating area 321, forming an air heat transfer layer that further increases thermal resistance. In other embodiments, the air heat transfer layer may also be formed on opposite sides of the heat insulation member 34, or between the heat insulation member 34 and the first heat-conducting portion 331.

[0044] In one embodiment, the heat insulation element 34 is arc-shaped, adapted to the shape of the first heating area 321. This allows the heat insulation element 34 to more closely cover the first heating area 321, thus better blocking the heat from the first heating area 321.

[0045] In one embodiment, the heat exchange channel 34a includes a plurality of through holes 340a arranged sequentially along the length of the heat insulation member 34 and extending through the thickness of the heat insulation member 34. That is, the plurality of through holes 340a are arranged sequentially along the length of the first heating zone 321, which ensures that the heat in the first heating zone 321 is transferred relatively evenly, preventing local overheating and melting. The shape of the through holes 340a is not limited; for example, the plurality of through holes 340a can be configured as closed holes inside the heat insulation member 34, or as open holes at the edge of the heat insulation member 34. The plurality of through holes 340a can be evenly distributed, but is not limited to this.

[0046] In one embodiment, a plurality of through holes 340a are provided at the edge of the heat insulation member 34. Specifically, the heat insulation member 34 is arc-shaped, including an inner arc edge 341 and an outer arc edge 342 surrounding the inner arc edge 341. Of the plurality of through holes 340a, one of two adjacent through holes 340a radially extends to the inner arc edge 341, and the other radially extends to the outer arc edge 342. This arrangement allows the multiple through holes 340a to alternately penetrate the inner and outer arc edges of the heat insulation member 34, resulting in a relatively even distribution of heat across the heat insulation member 34, and consequently, a more even distribution of heat transferred to the heating plate 1. Figure 5 In the embodiment shown, the plurality of through holes 340a are configured as rectangular holes, but are not limited to this.

[0047] In one embodiment, the distance between the through hole 340a, which radially extends to the outer arc edge 342, and the inner arc edge is D1, where 0.8 mm ≤ D1 ≤ 3 mm. This dimension prevents the heat insulation element 34 from deforming or breaking at the inner arc edge 341. In an alternative embodiment, D1 can be 0.8 mm, 1 mm, 1.2 mm, 1.5 mm, 1.8 mm, or 2 mm, but is not limited to these values.

[0048] In one embodiment, the distance between the through hole 340a, which radially extends to the inner arc edge 341, and the outer arc edge 342 is D2, where 0.8mm ≤ D2 ≤ 3mm. This dimension prevents the heat insulation element 34 from deforming or breaking at the outer arc edge 342. In an alternative embodiment, D2 can be 0.8mm, 1mm, 1.2mm, 1.5mm, 1.8mm, or 2mm, but is not limited to these values.

[0049] In one embodiment, the dimension of each through hole 340a in the extending direction of the heat insulation member 34 is W, 0.8mm ≤ W ≤ 5mm. This dimension ensures that the solid area of ​​the heat insulation member 34 is approximately equal to the area of ​​the holes, avoiding excessive thermal resistance. In an alternative embodiment, W can be set to 0.8mm, 1mm, 1.2mm, 1.5mm, 1.8mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, or 5mm. Figure 5 In the embodiment shown, each through hole 340a has the same size in the extending direction of the heat insulation member 34.

[0050] In one embodiment, the two ends of the heat insulation member 34 are spaced apart by a preset angle β, that is, the central angle corresponding to the heat insulation member 34 is β, where 30°≤β≤270°. Within this angle range, the circumferential length of the heat insulation member 34 is appropriate, which can both avoid excessive heat loss and effectively block heat to prevent the heating plate 31 from overheating. In an optional embodiment, the angle β can be set to 30°, 50°, 80°, 100°, 120°, 150°, 200°, 230°, 270°, but is not limited to these.

[0051] In one embodiment, the heat insulation element 34 is integrally formed into a series of continuous Z-shaped structures, such as... Figure 3 and Figure 5 As shown, the heat exchange channel 34a and the heat insulation part 34b are formed. This structure is simple and easy to manufacture. Moreover, multiple consecutive Z-shaped structures can form alternating heat exchange channels 34a and heat insulation parts 34b, making the heat exchange channels 34a and heat insulation parts 34b evenly distributed, so that the heat transfer in all parts of the heat insulation member 34 is relatively uniform.

[0052] exist Figure 3 In the embodiment shown, the heat-conducting element 33 has a central hole extending along the thickness direction at its center. The central hole serves as a clearance hole for other components, such as a cutter shaft, to pass through.

[0053] Please refer to Figure 6 , Figure 6 This is a top view of the heating plate assembly 30.

[0054] 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.

[0055] 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) includes a contact surface (310) for contacting food. A heating element (32) is disposed on the side of the heating plate 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 element (32) and the heating plate. The thermal conductivity of the heat insulation component (34) is less than that of the heat conduction component (33). The heat insulation component (34) is provided corresponding to the first heating area (321) and includes a heat exchange channel (34a) and a heat insulation part (34b). The heat conduction component (33) includes a first heat conduction part (331) corresponding to the first heating area (321) and a second heat conduction part (332) corresponding to the second heating area (322). The first heat conduction part (331) and the heat insulation component (34) are located between the heating element (32) and the heating plate (31), and the second heat conduction part (332) is located between the heating element (32) 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 disposed on the side of the first heat-conducting part (331) facing the first heat-generating area (321), and / or the thickness difference between the first heat-conducting part (331) and the second heat-conducting part (332) is greater than or equal to the thickness of the heat insulation element (34).

4. The heat disc assembly of claim 1, wherein, The heat insulation element (34) is arc-shaped and matches the shape of the first heating area (321).

5. The heat disc assembly of claim 1, wherein, The heat exchange channel (34a) includes a plurality of through holes (340a) arranged along the length of the insulation member (34) and extending through the thickness of the insulation member (34).

6. The heat disc assembly of claim 5, wherein, The heat insulation element (34) is arc-shaped, including an inner arc edge (341) and an outer arc edge (342) surrounding the inner arc edge (341). Among the plurality of through holes (340a), one of two adjacent through holes (340a) extends radially to the inner arc edge (341), and the other extends radially to the outer arc edge (342).

7. The heating plate assembly according to claim 6, characterized in that, The distance between the through hole (340a) extending radially to the outer arc edge (342) and the inner arc edge (341) is D1, 0.8mm≤D1≤3mm, and / or The distance between the through hole (340a) extending radially to the inner arc edge (341) and the outer arc edge (342) is D2, 0.8mm≤D2≤3mm, and / or The dimensions of each through hole (340a) in the extension direction of the heat insulation member (34) are W, 0.8mm≤W≤5mm.

8. The heating plate assembly according to any one of claims 4 or 6, characterized in that, The central angle corresponding to the heat insulation component (34) is β, 30°≤β≤270.

9. The heating plate assembly according to any one of claims 1 to 7, characterized in that, The heat insulation component (34) is integrally formed into a series of Z-shaped structures to form the heat exchange channel (34a) and the heat insulation part (34b).

10. The heating plate assembly according to any one of claims 1 to 7, characterized in that, The contact surface (310) is provided with a plurality of protrusions (310a).

11. 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 10, wherein the heating plate assembly (30) is assembled at the bottom of the cup body (10), and the heating plate assembly and the cup body (10) together form a food processing cavity (101).

12. The food processor according to claim 11, characterized in that, The food processor also includes a mixing blade (50), which is rotatably disposed in the food processing chamber (101) to mix the ingredients in the food processing chamber (101).

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