Heating assembly and electric appliance
By designing staggered flow channels and an electrically heated film layer in the thick film heating plate, the problem of ineffective heat dissipation between the flow channel layers is solved, thereby improving the heat exchange efficiency and heat utilization rate of the heating component.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANGZHOU HEATWELL ELECTRIC HEATING TECH CO LTD
- Filing Date
- 2025-07-11
- Publication Date
- 2026-06-19
AI Technical Summary
In existing thick film heating plates, the flat area between adjacent flow channel layers causes heat to dissipate through the air, forming an ineffective heat dissipation area, resulting in a decrease in energy utilization and a low overall thermal efficiency.
A heating assembly is designed in which a first plate has staggered grooves arranged in a spiral pattern on both sides to form interlaced first and second flow channels. Heat is exchanged between the flow channel and the liquid medium through an electrically heated film layer, thereby increasing the contact area between the flow channel and the liquid medium and improving the heat exchange efficiency.
By combining the staggered flow channel design with the electric heating film layer, the contact area between the flow channel and the liquid medium is increased, the heat exchange efficiency is improved, and the uniform distribution and utilization of heat are achieved.
Smart Images
Figure CN224385709U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of electric heating elements, and specifically proposes a heating assembly and electrical device. Background Technology
[0002] Electric heating elements are components that generate heat by passing an electric current through a resistive material. They are widely used in various household appliances and industrial equipment. Among them, thick-film heating plates are a special type of electric heating element, which are mainly based on printing one or more layers of resistive material on a metal substrate and then forming the heating area through sintering and solidification.
[0003] In practical applications, thick film heating plates are generally equipped with a spiral flow channel formed by grooves on a thin metal plate and a substrate. The flow channel is filled with a medium for heat exchange. However, there are flat areas between two adjacent flow channel layers. These flat areas are not covered by liquid, which causes the heat in these areas to dissipate through the air, forming an "ineffective heat dissipation" area, resulting in a decrease in energy utilization and a low overall thermal efficiency. Utility Model Content
[0004] The purpose of this application is to solve at least some of the technical problems mentioned above, and this purpose is achieved through the following technical solutions:
[0005] In a first aspect, this application proposes a heating assembly comprising a first plate, a second plate, and a third plate. The first plate has a first surface and a second surface opposite to each other along its thickness direction. The first surface has a first groove arranged in a spiral pattern, and the second surface has a second groove arranged in a spiral pattern. The first groove and the second groove have the same spiral direction but are offset from each other. The second plate is connected to the first surface of the first plate and forms a first flow channel with the first groove. The third plate is connected to the second surface of the first plate and forms a second flow channel with the second groove. The second flow channel communicates with the first flow channel.
[0006] In some embodiments, the first groove and the second groove have the same spiral starting position, and the first plate has a first hole at the spiral starting position, the first hole connecting the first flow channel and the second flow channel.
[0007] In some embodiments, the outermost layer of the first groove has an opening at its end, and the second plate has a protrusion facing the first plate, the protrusion blocking the opening.
[0008] In some embodiments, the second plate is provided with a second hole, which communicates with the first flow channel and is located near the outermost end of the first groove.
[0009] In some embodiments, the first plate is provided with a third hole, which communicates with the second flow channel and is located near the end of the outermost layer of the second groove.
[0010] In some embodiments, the heating assembly further includes an electric heating film layer disposed on the side of the second plate and / or the third plate facing away from the first plate.
[0011] In some embodiments, the electroheating film layer includes a spirally distributed electroheating structure that at least partially projects onto the first flow channel and / or the second flow channel.
[0012] In some embodiments, the electroheating film layer includes a temperature sensor for detecting the temperature of the electroheating film layer.
[0013] Secondly, this application proposes an electrical device that includes the heating component of the first aspect.
[0014] In some embodiments, the electrical device further includes a body, and the second plate and / or the third plate are provided with an assembly structure, which is connected to the body by fasteners.
[0015] The technical solution proposed in this application has at least the following technical effects:
[0016] In this application, the first plate has a spirally distributed first groove and a second groove on both sides, which are staggered. The second plate and the third plate form a first flow channel and a second flow channel with the first groove and the second groove, respectively. That is, the various layers of the first flow channel and the second flow channel are staggered, thereby increasing the contact area between the flow channel and the liquid medium and improving the heat exchange efficiency. Attached Figure Description
[0017] To better integrate the content illustrated in the accompanying drawings with the description of the specific embodiments, a brief introduction to the drawings is provided below. It is understood that the accompanying drawings mentioned below are merely schematic illustrations of some embodiments of the relevant technical solutions and the technical solutions of this application. Without creative effort, those skilled in the art can create drawings illustrating other embodiments.
[0018] Specifically, the annotations for the accompanying drawings are as follows:
[0019] Figure 1 This is a schematic diagram of the overall structure of the heating assembly described in some embodiments of this application;
[0020] Figure 2 This is a cross-sectional schematic diagram of the heating assembly described in some embodiments of this application;
[0021] Figure 3 This is a structural schematic diagram of the first surface of the first plate body described in some embodiments of this application;
[0022] Figure 4This is a schematic diagram of the structure of the second surface of the first plate body described in some embodiments of this application;
[0023] Figure 5 This is a schematic diagram of the structure of the second plate body described in some embodiments of this application;
[0024] Figure 6 This is a schematic diagram of the structure of the third plate body described in some embodiments of this application;
[0025] Figure 7 This is a schematic diagram of the structure of the electroheating film layer described in some embodiments of this application.
[0026] Specifically, the annotations for the figure marks in the instruction manual are as follows:
[0027] 10. First plate; 101. First surface; 102. Second surface; 103. First groove; 104. Second groove; 105. First flow channel; 106. Second flow channel; 107. First hole; 108. Opening; 109. Third hole; 20. Second plate; 201. Protrusion; 202. Second hole; 30. Third plate; 301. Assembly structure; 40. Electric heating film layer; 401. Electric heating structure; 402. Temperature sensor. Detailed Implementation
[0028] To make the embodiments of this application clearer, they will be described below in conjunction with the accompanying drawings. It should be understood that the content mentioned below represents only some embodiments of this application, and not all embodiments are listed exhaustively. Therefore, other embodiments that can be obtained based on the following embodiments without any inventive effort fall within the protection scope of this application.
[0029] It should be understood that the terminology used herein is for the purpose of describing specific embodiments only and is not intended to impose strict limitations on the technical solutions unless the context clearly indicates otherwise. For example, the use of "a," "an," and "the" to modify a feature does not preclude the possibility that the feature may be plural in other embodiments.
[0030] It should be understood that the terms "comprising," "including," and "having" are open-ended, indicating the presence of the stated features but not excluding the possibility of other features in the embodiment. Similarly, the use of terms such as "first," "second," etc., to describe multiple features only indicates the distinction between one feature and another, and such terms do not imply order or sequence unless explicitly stated in the context.
[0031] It should be understood that, unless the context clearly indicates otherwise, the terms "setup," "connection," and "installation" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integrated connection; they can refer to a direct connection or an indirect connection via a medium. Those skilled in the art will understand the specific meaning of these terms in this document based on the specific circumstances.
[0032] In addition, for ease of description, the text will use terms of spatial relative relationship to describe the position of one feature relative to another feature, such as "inner", "outer", "end", "side", "upper", "middle", "lower", "high", "low", "axial", "circumferential", "radial", "horizontal", "vertical", "first direction", "second direction", etc. It can be understood that the spatial relative relationship between two features should include other specific situations besides those shown in the accompanying drawings of the specification.
[0033] The embodiments of this application are described below with reference to the accompanying drawings. It can be understood that the technical features involved in the different embodiments described below can be combined with each other as long as they do not conflict with each other.
[0034] Firstly, referring to Figures 1 to 6 This application provides a heating assembly comprising a first plate 10, a second plate 20, and a third plate 30. The first plate 10 has a first surface 101 and a second surface 102 opposite to each other along its thickness direction. The first surface 101 has a first groove 103 arranged in a spiral pattern, and the second surface 102 has a second groove 104 arranged in a spiral pattern. The first groove 103 and the second groove 104 have the same spiral direction but are staggered. The second plate 20 is connected to the first surface 101 of the first plate 10 and forms a first flow channel 105 with the first groove 103. The third plate 30 is connected to the second surface 102 of the first plate 10 and forms a second flow channel 106 with the second groove 104. The second flow channel 106 communicates with the first flow channel 105.
[0035] In this embodiment, the first plate 10 is provided with a spirally distributed first groove 103 and a second groove 104 on both sides. The first groove 103 and the second groove 104 are staggered. The second plate 20 and the third plate 30 form a first flow channel 105 and a second flow channel 106 with the first groove 103 and the second groove 104, respectively. That is, the various layers of the first flow channel 105 and the second flow channel 106 are staggered, thereby increasing the contact area between the flow channel and the liquid medium and improving the heat exchange efficiency.
[0036] It should be noted that the second plate 20 and the third plate 30 can be welded to both sides of the first plate 10 respectively, thereby ensuring the firmness of the connection and the airtightness of the first flow channel 105 and the second flow channel 106. The first flow channel 105 and the second flow channel 106 can be filled with a liquid medium.
[0037] To further explain, the second flow channel 106 is a layer between two adjacent layers of the first flow channel 105, and the first flow channel 105 is a layer between two adjacent layers of the second flow channel 106. This makes the heat exchange more complete and the heat distribution more uniform when the liquid medium flows in the first flow channel 105 and the second flow channel 106.
[0038] In some embodiments, refer to Figure 3 and Figure 4 The first groove 103 and the second groove 104 have the same spiral starting position. The first plate 10 has a first hole 107 at the spiral starting position. The first hole 107 connects the first flow channel 105 and the second flow channel 106.
[0039] In this embodiment, a design is proposed in which the first flow channel 105 and the second flow channel 106 are connected.
[0040] In some embodiments, refer to Figure 1 and Figure 5 The outermost layer of the first groove 103 has an opening 108 at its end, and the second plate 20 has a protrusion 201 facing the first plate 10, which blocks the opening 108.
[0041] In this embodiment, the protrusion 201 can be formed by stamping the second plate 20. Specifically, the protrusion 201 can be welded to the opening 108 of the first groove 103 to achieve a tight seal and prevent liquid medium from flowing out from the opening 108.
[0042] In some embodiments, refer to Figure 1 and Figure 5 The second plate 20 is provided with a second hole 202, which is connected to the first flow channel 105. The second hole 202 is close to the end of the outermost ring of the first groove 103.
[0043] In this embodiment, the second hole 202 can be a liquid inlet hole, that is, the liquid medium enters the first flow channel 105 from the outermost layer of the first flow channel 105, and then enters the second flow channel 106 through the first hole 107. The design is reasonable, and the liquid medium fully fills the first flow channel 105.
[0044] In some embodiments, refer to Figure 1 , Figure 3 and Figure 4The first plate 10 is provided with a third hole 109, which is connected to the second flow channel 106. The third hole 109 is close to the end of the outermost layer of the second groove 104.
[0045] In this embodiment, the third hole 109 is a liquid outlet hole. Based on the above, the liquid medium enters the first flow channel 105 from the outermost layer of the first flow channel 105, then enters the second flow channel 106 through the first hole 107, and then flows out of the second flow channel 106 from the outermost layer of the second flow channel 106, thus realizing a complete flow path and completely filling the first flow channel 105 and the second flow channel 106.
[0046] Of course, it is also a desirable implementation method to have the third hole 109 as the liquid inlet and the second hole 202 as the liquid outlet.
[0047] In some embodiments, refer to Figure 7 The heating assembly also includes an electric heating film layer 40, which is disposed on the side of the second plate 20 and / or the third plate 30 facing away from the first plate 10.
[0048] In this embodiment, the electric heating film layer 40 comprises multiple layers of resistive material, specifically, it can be sintered and cured on the side of the third plate 30 facing away from the first plate 10. The second flow channel 106 is close to the electric heating film layer 40, and the liquid medium within the second flow channel 106 has a higher temperature, which can transfer heat to the liquid medium within the first flow channel 105 to achieve uniform heat distribution.
[0049] Of course, the electric heating film layer 40 can also be provided on the side of the second plate 20 facing away from the first plate 10, or the electric heating film layer 40 can be provided on both the first plate 10 and the second plate 20.
[0050] In some embodiments, refer to Figure 7 The electric heating film layer 40 includes a spirally distributed electric heating structure 401, which at least partially overlaps with the projection of the first flow channel 105 and / or the second flow channel 106.
[0051] In this embodiment, the electric heating film layer 40 is disposed on the third plate 30, and the electric heating structure 401 is close to the second flow channel 106, with at least 80% of its projection overlapping with the second flow channel 106, so as to fully facilitate heat exchange.
[0052] In some embodiments, refer to Figure 7 The electric heating film 40 includes a temperature sensor 402, which is used to detect the temperature of the electric heating film 40.
[0053] In this embodiment, the temperature sensor 402 can be electrically connected to an electrode on the electric heating film 40, and its temperature sensing structure can be spirally distributed synchronously with the electric heating structure 401 to obtain an accurate temperature, which can be used to assist in regulating the heating power of the electric heating film 40.
[0054] Of course, the temperature sensor 402 is an optional structure, and it is also a desirable implementation method to not provide the temperature sensor 402 in the electric heating film layer 40.
[0055] Secondly, embodiments of this application provide an electrical device that includes the heating component of the first aspect.
[0056] In this embodiment, the electrical device has all the technical effects of the heating component, and the specific technical effects of the heating component will not be described in detail.
[0057] Alternatively, the electrical appliance may be a coffee machine, an oven, or a kettle.
[0058] In some embodiments, refer to Figure 1 and Figure 6 The electrical device also includes a main body, and the second plate 20 and / or the third plate 30 are provided with an assembly structure 301, which is connected to the main body by fasteners.
[0059] In this embodiment, as Figure 1 As shown, the assembly structure 301 includes three annular structures spaced apart on the outer periphery of the third plate 30. In some embodiments not shown in the figure, the main body base of the electrical device is provided with corresponding screw holes, and the fasteners can be screws. After passing through the annular structures, the screws are locked in the screw holes on the main body.
[0060] It should be noted that the electrical device in this embodiment may also include other components, such as power lines, electrical housings, etc., which will not be described here.
[0061] In particular, the term "and / or" in this application should be understood as follows:
[0062] In the first case, the term “and / or” between the first subject and the second subject includes any of the following meanings: (1) only the first subject; (2) only the second subject; and (3) both the first subject and the second subject.
[0063] In the second case, the term "and / or" between the last two of three or more subjects means including at least any one of the subjects. For example, "first subject, second subject and / or third subject" has the same meaning as "first subject and / or second subject and / or third subject", specifically including the following combinations: (1) only the first subject; (2) only the second subject; (3) only the third subject; (4) first subject and second subject and no third subject; (5) first subject and third subject and no second subject; (6) second subject and third subject and no first subject; and (7) first subject, second subject and third subject;
[0064] Furthermore, the character " / " in this application indicates that the objects before and after it are in an "or" relationship.
[0065] Finally, although the embodiments of this application have been described above in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the concept of this application, and such modifications and variations all fall within the scope of protection of this application.
Claims
1. A heating assembly, characterized by, include: The first plate (10) has a first surface (101) and a second surface (102) opposite to each other along its thickness direction. The first surface (101) is provided with a first groove (103) distributed in a spiral pattern, and the second surface (102) is provided with a second groove (104) distributed in a spiral pattern. The first groove (103) and the second groove (104) have the same spiral direction and are staggered. The second plate (20) is connected to the first surface (101) of the first plate (10) and forms a first flow channel (105) with the first groove (103); The third plate (30) is connected to the second surface (102) of the first plate (10) and surrounds the second groove (104) to form a second flow channel (106), which is connected to the first flow channel (105).
2. The heating assembly of claim 1, wherein, The first groove (103) and the second groove (104) have the same spiral starting position. The first plate (10) has a first hole (107) at the spiral starting position. The first hole (107) connects the first flow channel (105) and the second flow channel (106).
3. The heating assembly of claim 1, wherein, The outermost layer of the first groove (103) has an opening (108) at its end, and the second plate (20) has a protrusion (201) facing the first plate (10), which blocks the opening (108).
4. The heating assembly according to claim 1, characterized in that, The second plate (20) is provided with a second hole (202), which communicates with the first flow channel (105) and is located near the end of the outermost ring of the first groove (103).
5. The heating assembly of claim 1, wherein, The first plate (10) is provided with a third hole (109), which is connected to the second flow channel (106) and is located near the end of the outermost layer of the second groove (104).
6. The heating assembly of any one of claims 1 to 5, wherein, The heating assembly further includes an electric heating film layer (40), which is disposed on the side of the second plate (20) and / or the third plate (30) facing away from the first plate (10).
7. The heating assembly of claim 6, wherein, The electroheating film layer (40) includes a spirally distributed electroheating structure (401), which at least partially overlaps with the first flow channel (105) and / or the second flow channel (106) in projection.
8. The heating assembly of claim 6, wherein, The electric heating film (40) includes a temperature sensor (402) for detecting the temperature of the electric heating film (40).
9. An electrical appliance device, characterized by Includes the heating assembly as described in any one of claims 1 to 8.
10. The electrical device of claim 9, wherein, The electrical device also includes a main body, and the second plate (20) and / or the third plate (30) are provided with an assembly structure (301), which is connected to the main body by fasteners.