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 plate comprises a contact face used for making contact with food materials. 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 arranged between the heating part and the heating disc, 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. Convex teeth extending outwards in the radial direction of the heat conduction piece are arranged in the containing groove, the heat insulation piece is contained in the containing groove and provided with tooth grooves matched with the convex teeth in shape, and the convex teeth are embedded into the tooth grooves in a matched mode. The heating disc assembly is uniform in heat, and the risk of the bottom pasting phenomenon is 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] Current food processors typically use heating elements, but these elements 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 in these hot zones is 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 disposed between the heating element and the heating plate. 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 a receiving groove. The receiving groove is provided with protruding teeth extending radially outward along the heat conduction component. The heat insulation component is received in the receiving groove and is provided with a tooth groove adapted to the shape of the receiving groove. The protruding teeth are adapted to be embedded in the tooth groove.

[0008] The heating plate assembly and food processor provided in this application have a heat insulation component located between the first heating zone and the heating plate. Heat from the first heating zone is transferred to the heating plate via the heat insulation component, and heat from the second heating zone is transferred to the heating plate via the second heat-conducting portion. Because the thermal conductivity of the heat insulation component is lower than that of the second heat-conducting portion, the thermal resistance at the heat insulation component is higher. This results in a lower heat transfer rate from the first heating zone to the heating plate via the heat insulation component, and a higher heat transfer rate from the second heating zone to the heating plate via the second heat-conducting portion. This ensures that the heat distribution between the heating plate and the corresponding areas of the first and second heating zones is relatively balanced, preventing localized overheating and scorching. Furthermore, the heat insulation component is housed within a receiving groove, and the toothed groove of the heat insulation component engages with the protruding teeth of the receiving groove, which has toothed edges. This increases the contact area between the heat insulation component and the first heat-conducting portion, improving the strength of the weld.

[0009] Optionally, the receiving groove is located at the outer edge of the heat-conducting component, and the heat insulation component is adapted to be received within the receiving groove. This facilitates the assembly of the heat insulation component and reduces the machining accuracy of the heat insulation component's dimensions.

[0010] Optionally, the receiving groove extends through the thickness direction of the heat-conducting component, and the thickness of the heat-insulating component is less than or equal to the thickness of the second heat-conducting portion. If the thickness of the heat-insulating component is less than that of the second heat-conducting portion, a gap is formed on one or both sides of the heat-insulating component, which serves as an air heat transfer layer, further increasing the thermal resistance. If the thickness of the heat-insulating component is equal to that of the second heat-conducting portion, the heat-insulating component is flush with the second heat-conducting portion, facilitating assembly and resulting in a more rational internal layered structure.

[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 central angle corresponding to the heat insulation component is β, where 30°≤β≤270°. Within this angle range, the arc 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.

[0013] Optionally, the receiving groove includes a plurality of spaced-apart protrusions, and the heat insulation component is provided with a plurality of corresponding grooves for the protrusions, with each protrusion embedded in one of the grooves. This increases the number of protrusions, and the heat insulation component and the first heat-conducting part can be connected at more points through the one-to-one cooperation of the protrusions and grooves, resulting in a more reliable connection.

[0014] Optionally, the receiving groove is formed at the edge of the first heat-conducting part, and a plurality of protruding teeth are disposed on the outer edge of the first heat-conducting part. The width dimension of each protruding tooth in the circumferential direction of the heat-conducting part is W, 1mm≤W≤5mm; and / or the distance between two adjacent teeth is a preset angle α, 5°≤α≤60°. The value of W can ensure the strength of the teeth and reduce the risk of breakage or deformation of each tooth. The angle α can ensure that there is an appropriate distance between two adjacent teeth.

[0015] Optionally, in the orthographic projection along the thickness direction of the heat-conducting component, the first heating zone includes an arc-shaped inner contour line and an outer contour line surrounding the inner contour line. The projection of the protruding tooth is located between the inner and outer contour lines, and the projection of the tooth tip is located inside the inner contour line. With this configuration, since the tooth root is located inside the inner contour line of the heating element, the radial dimension of the heat insulation component along the heat-conducting component can be designed to be relatively large. This increases the contact area between the heat insulation component and the first heating zone, ensuring a sufficient heat transfer area. Furthermore, multiple protruding teeth can also be used for heat dissipation, resulting in relatively long protruding teeth, good heat dissipation effect, and prevention of melting of the heating element in the first heating zone.

[0016] 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.

[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 being assembled to the bottom of the cup body to form the bottom of the cup body. The food processor provides even heating.

[0018] Optionally, the food processor also includes a mixing blade rotatably mounted on the heating plate assembly. The cup body has a food processing chamber, and the blade of the mixing blade is disposed within the food processing chamber. This food processor also has a blending function, meeting the needs of various application scenarios. Attached Figure Description

[0019] Figure 1 This is a cross-sectional view of the cup assembly of a food processor shown in an exemplary embodiment of this application;

[0020] Figure 2 This is a bottom view of the heating element assembly;

[0021] Figure 3 This is an exploded view of the heating element assembly;

[0022] Figure 4 This is a cross-sectional view of the heating element assembly;

[0023] Figure 5 This is a top view of the first heating zone, the heating components, and the insulation components in their assembled state.

[0024] Figure 6 This is a top view of the heating element assembly. Detailed Implementation

[0025] 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.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] exist Figure 1In 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 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.

[0031] 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.

[0032] 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.

[0033] 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 welding 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.

[0034] 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.

[0035] 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.

[0036] A heat insulation element 34 and a heat conduction element 33 are disposed between the heating element 32 and the heating plate 31. The heat insulation element 34 is correspondingly disposed to the first heating area 321, and its thermal conductivity is less than that of the heat conduction element 33. The heat conduction element 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 receiving groove 3310. The receiving groove 3310 is provided with protruding teeth 3310a extending radially along the heat conduction element 33, so that the receiving groove 3310 forms a toothed edge. The heat insulation element 34 is received in the receiving groove 3310 and is provided with a toothed groove 340 adapted to the shape of the protruding teeth 3310a. The protruding teeth 3310a are adaptedly embedded in the toothed groove 340.

[0037] As described above, the heat insulation component 34 is located between the first heating zone 321 and the heating plate 31. The heat from the first heating zone 321 is transferred to the heating plate 31 via the heat insulation component 34, and the heat from the second heating zone 322 is transferred to the heating plate 31 via the second heat-conducting part 332. Since the thermal conductivity of the heat insulation component 34 is less than that of the second heat-conducting part 332, the thermal resistance at the heat insulation component 34 is relatively large. The heat transfer rate from the first heating zone 321 to the heating plate 31 via the heat insulation component 34 is low, while the heat transfer rate from the second heating zone 322 to the heating plate 31 via the second heat-conducting part 332 is high. This makes the heat distribution between the heating plate 31 and the corresponding parts of the first heating zone 321 and the second heating zone 322 relatively balanced, thus avoiding local overheating and scorching. In addition, the heat insulation component 34 is housed in the receiving groove 3310. The toothed groove 340 of the heat insulation component 34 mates with the receiving groove 3310 with toothed edges. That is, the toothed groove 340 and the protruding tooth 3310a are interlocked and connected, which increases the contact area between the heat insulation component 34 and the first heat-conducting part 331 and improves the firmness after welding.

[0038] In one embodiment, such as Figure 3As shown, the receiving groove 3310 is located at the outer edge of the heat-conducting element 33, and the heat-insulating element 34 is adaptedly received within the receiving groove 3310. That is, the receiving groove 3310 is an open groove that opens to the side, which facilitates the assembly of the heat-insulating element 34 and reduces the machining accuracy required for the dimensions of the heat-insulating element 34. In some other embodiments, the receiving groove 3310 may also be a closed groove located inside the heat-conducting element 33.

[0039] In one embodiment, the receiving groove 3310 extends through the thickness direction of the heat-conducting component 33, that is, the receiving groove 3310 extends through the first heat-conducting portion 331, and the thickness of the heat-insulating component 34 is less than or equal to the thickness of the second heat-conducting portion 332. If the thickness of the heat-insulating component 34 is less than the thickness of the second heat-conducting portion 332, a gap will be formed on one or both sides of the heat-insulating component 34, and this gap forms an air heat transfer layer, which can further increase the thermal resistance. If the thickness of the heat-insulating component 34 is equal to the thickness of the second heat-conducting portion 332, then the heat-insulating component 34 is flush with the second heat-conducting portion 332, which facilitates assembly and makes the internal layered structure more reasonable.

[0040] exist Figure 3 In the illustrated embodiment, the heat insulation element 34 is arc-shaped, adapting 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.

[0041] In one embodiment, the central angle corresponding to the heat insulation element 34 is β, where 30° ≤ β ≤ 270°. Within this angle range, the arc length of the heat insulation element 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°, or 270°, but is not limited to these.

[0042] The receiving groove 3310 is provided with a plurality of protruding teeth 3310a at intervals. That is, the outer edge of the heat-conducting component 2 has a plurality of protruding teeth 3310a. The protruding teeth 3310a are all located within the receiving groove 3310. The heat insulation component 34 is provided with a plurality of toothed grooves 340 corresponding to the plurality of protruding teeth 3310a. The plurality of protruding teeth 3310a are embedded one-to-one into the plurality of toothed grooves 340. With this arrangement, the number of protruding teeth 3310a is increased. The heat insulation component 34 and the first heat-conducting part 331 can be connected at multiple points through the one-to-one cooperation of the plurality of protruding teeth 3310a and toothed grooves 340, and the connection is more reliable. In this embodiment, the matching means that the shape, number and spacing of the protrusions 3310a are all matched with the tooth grooves 340. For example, multiple protrusions 3310a are all set as rectangular teeth and are evenly spaced, and multiple tooth grooves are all set as rectangular grooves and are evenly spaced, which makes the heat of the first heat-conducting part 331 more balanced.

[0043] Please refer to Figure 5 , Figure 5 This is a top view of the first heating zone 321, the heating component 33, and the heat insulation component 34 in their assembled state.

[0044] In one embodiment, in the orthographic projection along the thickness direction of the heat-conducting element 33, the first heating region 321 includes an arc-shaped inner contour line 321a and an outer contour line 321b surrounding the inner contour line 321a. The projection of the protrusion 3310a is located between the inner contour line 321a and the outer contour line 321b, and the projection of the tooth root of the protrusion 3310a is located inside the inner contour line 321a. Because the tooth root of the protrusion 3310a is located inside the inner contour line 321a of the heating element 32, the radial dimension of the heat insulation element 34 along the heat-conducting element 33 can be designed to be relatively large. This increases the contact area between the heat insulation element 34 and the first heating region 321, ensuring a sufficient heat transfer area. Furthermore, the multiple protrusions 3310a can also be used for heat dissipation, resulting in a relatively long protrusion 3310a, good heat dissipation effect, and prevention of melting of the heating element 32 in the first heating region 321.

[0045] In one embodiment, such as Figure 5 As shown, a plurality of protruding teeth 3310a are disposed on the outer edge of the first heat-conducting portion 331, and the aforementioned receiving groove 3310 is formed at the edge of the first heat-conducting portion. The width dimension of each protruding tooth 3310a in the circumferential direction of the heat-conducting component 33 is W, 1mm≤W≤5mm. This arrangement can ensure the strength of the teeth and reduce the risk of individual teeth breaking or deforming. In an alternative embodiment, the dimension W can be 1mm, 2mm, 3mm, 4mm, or 5mm, but is not limited to these.

[0046] In one embodiment, a preset angle α is spaced between two adjacent teeth 3310a, where 5° ≤ α ≤ 60°. This ensures an appropriate gap between adjacent teeth. In an alternative embodiment, the preset angle α can be set to 5°, 10°, 20°, 30°, 40°, 50°, or 60°, but is not limited to these values.

[0047] Please refer to Figure 6 , Figure 6 This is a top view of the heating plate assembly 30.

[0048] 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.

[0049] 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 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 disposed between the heating element (32) and the heating plate (31). The heat insulation component (34) is disposed corresponding to the first heating area (321) and has a thermal conductivity less than that of the heat conduction component (33). 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) is provided with a receiving groove (3310). The receiving groove (3310) is provided with a protruding tooth (3310a) extending radially outward along the heat conduction component (33). The heat insulation component (34) is received in the receiving groove (3310) and is provided with a tooth groove (340) adapted to the shape of the protruding tooth (3310a). The protruding tooth (3310a) is adapted to be embedded in the tooth groove (340).

2. The heat disc assembly of claim 1, wherein, The receiving groove (3310) is located at the outer edge of the heat-conducting member (33), and the heat-insulating member (34) is adaptedly received within the receiving groove (3310); and / or The receiving groove (3310) is provided through the thickness direction of the heat-conducting member (33), and the heat insulation member (34) is less than or equal to the thickness of the second heat-conducting part (332).

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

4. The heat disc assembly of claim 3, wherein, The central angle corresponding to the heat insulation component (34) is β, 30°≤β≤270°.

5. The heat disc assembly according to any one of claims 1 to 4, wherein, The receiving groove (3310) is provided with a plurality of protruding teeth (3310a) at intervals, and the heat insulation member (34) is provided with a plurality of tooth grooves (340) corresponding to the plurality of protruding teeth (3310a), and the plurality of protruding teeth (3310a) are embedded in the plurality of tooth grooves (340) one by one.

6. The heat disc assembly of claim 5, wherein, The receiving groove (3310) is formed at the edge of the first heat-conducting part, and a plurality of protrusions (3310a) are disposed on the outer edge of the first heat-conducting part (331). The width dimension of each protrusion (3310a) in the circumferential direction of the heat-conducting member (33) is W, 1mm≤W≤5mm; and / or, the distance between two adjacent protrusions (3310a) is a preset angle α, 5°≤α≤60°.

7. The heat disc assembly according to any one of claims 1 to 4, wherein, In the orthographic projection along the thickness direction of the heat-conducting element (33), the first heating area (321) includes an arc-shaped inner contour line (321a) and an outer contour line (321b) surrounding the outer periphery of the inner contour line (321a). The projection of the tooth (3310a) is located between the inner contour line (321a) and the outer contour line (321b), and the projection of the tooth root of the tooth (3310a) is located inside the inner contour line (321a).

8. The heat disc assembly according to any one of claims 1 to 4, wherein, 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 and a heating plate assembly (30) as described in any one of claims 1 to 8, the heating plate assembly (30) being assembled at the bottom of the cup body (10), the heating plate assembly (30) and the cup body forming 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).

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