CN220675820U - Heating plate assembly and liquid heating container - Google Patents
Heating plate assembly and liquid heating container Download PDFInfo
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- CN220675820U CN220675820U CN202322115088.9U CN202322115088U CN220675820U CN 220675820 U CN220675820 U CN 220675820U CN 202322115088 U CN202322115088 U CN 202322115088U CN 220675820 U CN220675820 U CN 220675820U
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 114
- 239000007788 liquid Substances 0.000 title claims abstract description 30
- 239000000463 material Substances 0.000 claims description 12
- 229910000617 Mangalloy Inorganic materials 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 7
- 239000004411 aluminium Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 description 10
- 230000020169 heat generation Effects 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000002776 aggregation Effects 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000030279 gene silencing Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001743 silencing effect Effects 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
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Abstract
The application relates to a heating plate assembly and a liquid heating container, wherein the heating plate assembly comprises a first heat conducting plate and a heating tube, the first heat conducting plate comprises a main body and a protruding part, the main body comprises a first surface and a second surface which are oppositely arranged, the protruding part is arranged on the second surface and protrudes towards a direction away from the first surface, and the protruding part is used for being abutted with the bottom wall of the container body; the heating tube is arranged on the first surface and comprises a heating section and connecting sections positioned at two ends of the heating section; the main body comprises a first heat conduction area and a second heat conduction area, the heating section is positioned in the first heat conduction area, and the connecting section is positioned in the second heat conduction area; the shape of the protruding part is the same as that of the second heat conduction area, and the protruding part and the second heat conduction area are aligned along the thickness direction of the heating plate component. The connecting section is arranged in the second heat conduction area, and the part of the bottom of the container body corresponding to the connecting section can directly receive heat through the protruding part, so that the bottom of the container body is ensured to be uniformly heated, and noise generated by heating is reduced.
Description
Technical Field
The application relates to the technical field of household appliances, in particular to a heating plate component and a liquid heating container.
Background
The liquid heating container generally comprises a container body and a heating plate component arranged at the bottom of the container body, wherein the heating plate component is arranged at the bottom of the container body and comprises a heat conducting plate and a heating tube, the heat conducting plate is connected to the bottom of the container body, and the heating tube is connected to one side of the heat conducting plate away from the container body. The heating tube can produce heat after the circular telegram, and the heat passes through the heat conduction board and transmits the container body to liquid in the container body heats.
In the working process of the liquid heating container, the temperature of the area, which is opposite to the heating pipe, on the heat conducting plate is obviously higher than that of other areas, so that the bottom of the container body is heated unevenly, and vibration or bubble cracking is generated due to uneven heating of the liquid in the container body, so that larger noise is formed.
Disclosure of Invention
The application provides a heating plate component and liquid heating container can solve container body bottom and be heated inhomogeneous and have the problem of great noise.
A first aspect of the present application provides a heat-generating plate assembly comprising:
the first heat-conducting plate comprises a main body and a protruding part, wherein the main body comprises a first surface and a second surface which are oppositely arranged, the protruding part is arranged on the second surface and protrudes towards the direction away from the first surface, and the protruding part is used for being abutted with the bottom wall of the container body;
the heating tube is arranged on the first surface and comprises a heating section and connecting sections positioned at two ends of the heating section;
the main body comprises a first heat conduction area and a second heat conduction area, the heating section is located in the first heat conduction area, and the connecting section is located in the second heat conduction area;
the shape of the protruding portion is the same as that of the second heat conduction area, and the protruding portion and the second heat conduction area are aligned along the thickness direction of the heating plate component.
In the above scheme, the first surface of the first heat conduction region is in contact with the heating section, but the second surface of the first heat conduction region is not in direct contact with the bottom wall of the container body, so that heat conducted from the first heat conduction region to the bottom of the container body is reduced, and meanwhile, the transverse heat conduction of the first heat conduction region is enhanced, so that the first heat conduction region can conduct heat generated by the heating section to the second heat conduction region transversely more, and the temperature difference between the first heat conduction region and the second heat conduction region is reduced. The second heat conduction area is provided with the protruding portion, and the opposite side of protruding portion is used for the diapire butt with the container body, sets up the protruding portion to the structure the same with second heat conduction area shape, ensures simultaneously that protruding portion aligns with the position of second heat conduction area to make protruding portion can direct conduction to the bottom of the container body with the heat of second heat conduction area, reduce the heat loss of second heat conduction area to the container body bottom heat conduction in-process.
In this application, when the heating plate subassembly heats the liquid in the container body, with the section contact and the relative higher first heat conduction region of temperature will partly heat transversely conduct to the second heat conduction region, the other part heat indirectly conducts to the corresponding position of container body bottom, the second heat conduction region that does not contact with the section that generates heat and the lower temperature then directly conducts the heat to the rest position of container body bottom through the bellying, above-mentioned structure is favorable to improving the heat conduction homogeneity of heating plate subassembly for the liquid of container body bottom is heated evenly, reduces because the bubble gathers the possibility of breaking and producing noise in the part. Some prior art have set up the linkage segment in first heat transfer area, this moment, the position temperature of the first heat transfer area corresponding with the linkage segment is lower, and this position need only be through the bottom of heat insulation structure heat conduction to the container body again, will lead to the container body bottom less with the corresponding position of linkage segment received heat, the temperature is lower, and the temperature of its surrounding part is higher relatively, will cause container body bottom liquid to be heated unevenly, there is the risk of noise production, and this application has set up the linkage segment in the second heat transfer area, container body bottom and the corresponding position of linkage segment can be direct through bellying receiving heat, ensure that this position is close with the temperature of its surrounding part, thereby ensured the even heating of container body bottom, in order to avoid above-mentioned risk.
In one possible design, the second thermally conductive region includes a first sub-region and a second sub-region, the first sub-region being circular; the second subregion is fan-shaped, along the radial of heating disk subassembly, the one end of second subregion with first subregion intercommunication.
In the above scheme, the projection of the heating section on the main body is C-shaped, the first subarea is a circle surrounded by the projection area, and the second subarea is fan-shaped to correspond to the projection shape of the connecting section on the main body.
In one possible design, the heating plate assembly further includes a second heat-conducting plate disposed on the second surface, the second heat-conducting plate including a plate body and a through hole disposed on the plate body, the protruding portion being accommodated in the through hole; the heat conductivity of the plate body is smaller than that of the first heat conducting plate.
In the above-mentioned scheme, the plate body can reduce the heat that first heat conduction region was conducted to the bottom of container body on the one hand, and on the other hand can promote the horizontal heat transfer of first heat conduction board, improves the heat that first heat conduction region was conducted to the second heat conduction region to improve the temperature of second heat conduction region, and then improve the heat that the second heat conduction region was conducted to the bottom of container body, in order to reach the effect that further improves the heated homogeneity of container body bottom.
In one possible design, the first heat transfer region and the plate body together form a high temperature heat transfer region, and the second heat transfer region and the boss together form a low temperature heat transfer region; the high temperature heat transfer area and the low temperature heat transfer area satisfy the following relation: h1/lambda 1 ·S+H2/λ 2 ·S≥L2/λ 1 S; wherein H1 is the heat conduction distance lambda of the first heat conduction region 1 S is the sectional area of the heat conduction channel of the heating disc component, H2 is the heat conduction distance of the plate body, lambda is the heat conduction coefficient of the first heat conduction plate 2 L2 is the heat conduction distance of the low-temperature heat conduction area, which is the heat conduction coefficient of the plate body.
In the scheme, when the high-temperature heat conduction area and the low-temperature heat conduction area meet the formula, the thermal resistance of the high-temperature heat conduction area is larger than or equal to that of the low-temperature heat conduction area, so that the peak clipping and valley filling effects are achieved, the overall thermal resistance of the heating plate assembly can be well balanced, the uniform heat conduction of the heating plate assembly to the container body is realized, the heat conduction of the bottom of the container body is more uniform, and finally the heating and silencing effects are realized.
In one possible design, the plate body has a first dimension L1, L1 in a radial direction of the heat generating disc assembly, satisfying: l1 is more than or equal to 25mm and less than or equal to 35mm.
In the scheme, when L1 is 25-35 mm, the heating plate assembly can ensure uniform heat conduction to the bottom of the container body.
In one possible design, the diameter of the body is D1 and the diameter of the second thermally conductive plate is D2, D1< D2.
In the above scheme, when the diameter D2 of the second heat conducting plate is larger than the diameter D1 of the main body, each part of the first heat conducting area can conduct heat to the bottom of the container body through the plate body, the condition that the bottom of the container body is heated unevenly is avoided, and when the diameter D2 of the second heat conducting plate is larger, the contact area between the second heat conducting plate and the container body is larger, the heat conducting area is larger, and the heat conducting uniformity of the plate body is ensured.
In one possible design, the thermal conduction distance H1 of the first thermally conductive region is the thickness of the body, H1 satisfying: h1 is less than or equal to 1.5mm and less than or equal to 5mm.
In the above scheme, if H1 is too small, the main body is too thin, which is not beneficial to the transverse heat conduction of the first heat conduction area, and the heat of the first heat conduction area is more conducted to the container body along the longitudinal direction, so that the heat conducted to the second heat conduction area is too little, and the heating of the heating disc assembly is uneven, which is not beneficial to the uniform heating of the liquid at the bottom of the container body; if H1 is too large, the cost of the first heat-conducting plate is too high, the overall weight of the heating plate assembly is too large, the use experience of consumers is affected, and the excessive heating plate assembly is not convenient to fix to the bottom of the container body.
In one possible design, the thermal conduction distance H2 of the plate body is the thickness of the plate body, H2 satisfying: h2 is more than or equal to 0.1mm and less than or equal to 5mm.
In the above scheme, if the H2 is too small, the plate body is too thin, so that a proper material cannot be found to realize enough heat resistance, the heat insulation effect of the plate body is affected, and the heat conducted to the bottom of the container body by the plate body in the first heat conduction area is too much, so that the uniform heating of the liquid at the bottom of the container body is not facilitated; if H2 is too large, the cost of the second heat-conducting plate is too high, the overall weight of the heating plate assembly is too large, the use experience of consumers is affected, and the excessive heating plate assembly is not convenient to fix to the bottom of the container body.
In one possible design, the material of the first heat-conducting plate is aluminum and the material of the second heat-conducting plate is high manganese steel.
In the scheme, when the first heat-conducting plate is aluminum and the second heat-conducting plate is high manganese steel, the overall heat resistance of the heating plate assembly can be well balanced, the uniform heat conduction of the heating plate assembly to the container body is realized, the heat conduction of the bottom of the container body is more uniform, and finally the heating mute effect is realized.
A second aspect of the present application provides a liquid heating vessel comprising:
the container body is used for containing liquid;
the heating plate assembly is the heating plate assembly, and the heating plate is arranged at the bottom of the container body and is used for heating liquid.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
FIG. 1 is a schematic cross-sectional view of a portion of a liquid heating vessel according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of the heat-generating plate assembly of FIG. 1;
FIG. 3 is an exploded view of the heat-generating plate assembly of FIG. 2;
FIG. 4 is a schematic structural view of the first heat-conducting plate in FIG. 3;
FIG. 5 is an enlarged view of portion A of FIG. 1;
FIG. 6 is a schematic view of the second heat conductive plate in FIG. 3;
FIG. 7 is a graph of temperature change of a hotplate assembly;
fig. 8 is a graph of temperature variation of a hotplate assembly.
Reference numerals:
10-a heat-generating plate assembly;
20-a container body;
1-a first heat-conducting plate;
11-a body;
111-a first surface;
112-a second surface;
113-a first thermally conductive region;
114-a second thermally conductive region;
114 a-a first sub-region;
114 b-a second subregion;
12-a boss;
2-heating tubes;
21-a heating section;
22-connecting segments;
3-a second heat-conducting plate;
31-through holes;
32-plate body;
4-temperature controller.
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.
Detailed Description
For a better understanding of the technical solutions of the present application, embodiments of the present application are described in detail below with reference to the accompanying drawings.
It should be understood that the described embodiments are merely some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
The terminology used in the embodiments of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be understood that the term "and/or" as used herein is merely one relationship describing the association of the associated objects, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
It should be noted that, the terms "upper", "lower", "left", "right", and the like in the embodiments of the present application are described in terms of the angles shown in the drawings, and should not be construed as limiting the embodiments of the present application. In the context of this document, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on the other element or be indirectly on the other element through intervening elements.
The embodiment of the application provides a liquid heating container, as shown in fig. 1, the liquid heating container includes a container body 20 and a heating plate assembly 10, the container body 20 is a cavity-shaped structure with an open top, the interior of the container body can hold liquid to be heated, and the heating plate assembly 10 is installed at the bottom of the container body 20 and is used for heating the liquid in the container body 20.
The embodiment of the application further provides a heating plate assembly 10, which is used in the liquid heating container, as shown in fig. 2 and 3, the heating plate assembly 10 includes a first heat-conducting plate 1 and a heat-generating tube 2, the first heat-conducting plate 1 includes a main body 11 and a protruding portion 12, the main body 11 includes a first surface 111 and a second surface 112 which are oppositely disposed, the protruding portion 12 is disposed on the second surface 112 and protrudes in a direction away from the first surface 111, and the protruding portion 12 is used for abutting against a bottom wall of the container body 20; the heating tube 2 is disposed on the first surface 111, and the heating tube 2 includes a heating section 21 and connection sections 22 located at both ends of the heating section 21. The main body 11 includes a first heat conduction area 113 and a second heat conduction area 114, the heat generating section 21 is located in the first heat conduction area 113, the connecting section 22 is located in the second heat conduction area 114, the shape of the protruding portion 12 is the same as that of the second heat conduction area 114, and the protruding portion 12 and the second heat conduction area 114 are aligned along the thickness direction Z of the heat generating disc assembly 10.
In this embodiment, the heating section 21 of the heating tube 2 is provided with heating wires, the connecting section 22 is not provided with heating wires, the first heat conduction region 113 is a region of the main body 11 corresponding to the heating section 21 of the heating tube 2, the temperature is higher, and the second heat conduction region 114 is a region of the main body 11 not corresponding to the heating section 21, the temperature is lower. The first surface 111 of the first heat conductive area 113 is in contact with the heat generating section 21, but the second surface 112 thereof is not in direct contact with the bottom wall of the container body 20, but has a certain gap, forming a heat insulating structure, which can delay the longitudinal heat conduction of the first heat conductive area 113, reduce the heat conducted from the first heat conductive area 113 to the bottom of the container body 20, and enhance the lateral heat conduction of the first heat conductive area 113, so that the first heat conductive area 113 can more laterally conduct the heat generated by the heat generating section 21 to the second heat conductive area 114, to reduce the temperature difference between the first heat conductive area 113 and the second heat conductive area 114. The second surface 112 of the second heat conducting area 114 is provided with the protruding portion 12, the other side of the protruding portion 12 is used for abutting against the bottom wall of the container body 20, the protruding portion 12 is arranged to be in the same structure as the shape of the second heat conducting area 114, and meanwhile, the protruding portion 12 is aligned with the position of the second heat conducting area 114, so that the protruding portion 12 can conduct heat of the second heat conducting area 114 to the bottom of the container body 20 directly, and heat loss in the process that the second heat conducting area 114 conducts heat to the bottom of the container body 20 is reduced.
When the heat-generating plate assembly 10 heats the liquid in the container body 20, the first heat-conducting area 113 contacting the heat-generating section 21 and having a relatively high temperature laterally conducts a part of heat to the second heat-conducting area 114, and another part of heat is indirectly conducted to a corresponding portion of the bottom of the container body 20 through the heat-insulating structure (may be that heat is conducted through air between the first heat-conducting area 113 and the bottom wall of the container body 20, or a solid structure is disposed at a gap between the first heat-conducting area 113 and the bottom wall of the container body 20, and heat is conducted through the solid structure), and the second heat-conducting area 114 not contacting the heat-generating section 21 and having a relatively low temperature directly conducts heat to the rest of the bottom of the container body 20 through the protruding portion 12. Some prior arts set the connection section 22 in the first heat conduction area 113, at this time, the temperature of the portion of the first heat conduction area 113 corresponding to the connection section 22 is lower, and the portion needs to be conducted to the bottom of the container body 20 through the heat insulation structure, which will result in less heat received by the portion of the bottom of the container body 20 corresponding to the connection section 22, the temperature is lower, and the temperature of the surrounding portion is relatively higher, which will cause uneven heating of the liquid at the bottom of the container body 20, and there is a risk of noise generation.
The boss 12 and the main body 11 are integrally formed, and have the same thermal conductivity, so that heat loss during heat conduction from the second heat conduction region 114 to the container body 20 via the boss 12 can be reduced as much as possible.
In this application, the specific shape of the second heat conducting area 114 may be adjusted according to the structural shape of the heating tube 2, for example, the heating tube 2 in a specific embodiment is in a C-shaped structure, as shown in fig. 2 and fig. 4, and accordingly, the second heat conducting area 114 includes a first sub-area 114a and a second sub-area 114b, the first sub-area 114a is circular, the second sub-area 114b is in a fan-ring shape, and one end of the second sub-area 114b is communicated with the first sub-area 114a along the radial direction of the heating disc assembly 10.
The projection of the heating section 21 on the main body 11 is C-shaped, the first sub-area 114a is a circle surrounded by the projection area, and the second sub-area 114b is fan-shaped to correspond to the projection shape of the connection section 22 on the main body 11. When the structure of the heating tube 2 is changed, the structure of the second heat conduction region 114 is also changed, and is not limited to the structural shape described in the present embodiment.
In this embodiment, the shape of the heating tube 2 and the mounting position thereof on the main body 11 determine the shape and size of the first sub-area 114a and the second sub-area 114b, and the first sub-area 114a and the second sub-area 114b are communicated, and together form the second heat conduction area 114, so that the structural size of the boss 12 can be determined, and thereby, the heat conduction from the part of the main body 11 which is not in contact with the heating section 21 to the bottom of the container body 20 can be ensured through the boss 12.
In a specific embodiment, as shown in fig. 1 and 2, the heat generating plate assembly 10 further includes a temperature controller 4, the temperature controller 4 is mounted on the first surface 111, and the temperature controller 4 is connected to the connection section 22.
The temperature controller 4 is fixedly connected to the side of the heating plate assembly 10 away from the container body 20, as shown in fig. 2, the temperature controller 4 is located in the second heat conducting area 114, and one end of the temperature controller 4 is connected to the connecting section 22 of the heating tube 2 through a lead pin and is used for controlling the heating temperature of the heating tube 2.
In a specific embodiment, as shown in fig. 1 and 3, the heat generating plate assembly 10 further includes a second heat conducting plate 3, where the second heat conducting plate 3 is disposed on the second surface 112, the second heat conducting plate 3 includes a plate body 32 and a through hole 31 disposed on the plate body 32, the boss 12 is accommodated in the through hole 31, and the thermal conductivity of the plate body 32 is smaller than that of the first heat conducting plate 1.
In this embodiment, the second heat-conducting plate 3 is disposed on the second surface 112, and at least part of the plate body 32 corresponds to the first heat-conducting region 113 along the thickness direction Z of the heat-generating plate assembly 10, and since the heat conductivity of the plate body 32 is smaller than that of the first heat-conducting plate 1, it is equivalent to disposing a plate-shaped heat-insulating structure at the gap between the first heat-conducting plate 1 and the bottom wall of the container body 20.
The plate body 32 can reduce the heat conducted by the first heat conducting area 113 to the bottom of the container body 20 on one hand, and can promote the transverse heat transfer of the first heat conducting plate 1 on the other hand, and improve the heat conducted by the first heat conducting area 113 to the second heat conducting area 114, so as to improve the temperature of the second heat conducting area 114, and further improve the heat conducted by the second heat conducting area 114 to the bottom of the container body 20, so as to achieve the effect of further improving the heating uniformity of the bottom of the container body 20.
In a specific embodiment, as shown in fig. 1, the diameter of the main body 11 is D1, and the diameter of the second heat conductive plate 3 is D2, D1< D2.
When the diameter D2 of the second heat-conducting plate 3 is larger than the diameter D1 of the main body 11, each part of the first heat-conducting area 113 can conduct heat to the bottom of the container body 20 through the plate body 32, so that the condition that the bottom of the container body 20 is heated unevenly is avoided, and when the diameter D2 of the second heat-conducting plate 3 is larger, the contact area with the container body 20 is larger, the heat-conducting area is also larger, and the heat-conducting uniformity of the plate body 32 is ensured.
In a specific embodiment, as shown in fig. 5, the thickness of the main body 11 is H1, and H1 satisfies: h1 is less than or equal to 1.5mm and less than or equal to 5mm. Specifically, H1 may be 1.5mm, 2mm, 2.5mm, 3mm, 4mm or 5mm, or may be other values within the above range, which is not limited in this embodiment.
If H1 is too small (e.g., less than 1.5 mm), it may cause the main body 11 to be too thin, which is disadvantageous for the lateral heat conduction of the first heat conduction region 113, and the heat of the first heat conduction region 113 is more conducted to the container body 20 in the longitudinal direction, and the heat conducted to the second heat conduction region 114 is too small, which may cause uneven heat generation of the heat-generating disc assembly 10, which is disadvantageous for the uniform heat generation of the liquid at the bottom of the container body 20; if H1 is too large (e.g., greater than 5 mm), this may result in excessive cost of the first heat-conducting plate 1, and may result in excessive weight of the heat-generating plate assembly 10 as a whole, affecting the consumer's use experience, and the excessive weight of the heat-generating plate assembly 10 may be inconvenient to fix to the bottom of the container body 20.
Therefore, when the thickness H1 of the main body 11 is 1.5mm to 5mm, the heat conduction effect in the lateral direction of the first heat conduction region 113 can be ensured, and the weight of the heat generation plate assembly 10 can be appropriately reduced, and the cost of the heat generation plate assembly 10 can be reduced.
In one specific embodiment, as shown in fig. 5, the thickness of the plate 32 is H2, where H2 satisfies: h2 is more than or equal to 0.1mm and less than or equal to 5mm. Specifically, H2 may be 0.1mm, 0.6mm, 1mm, 1.5mm, 2mm, 3mm, 4mm or 5mm, or may be other values within the above range, which is not limited in this embodiment.
If H2 is too small (e.g. less than 0.1 mm), the plate 32 is too thin, so that a suitable material cannot be found to realize a sufficient thermal resistance, which affects the heat insulation effect of the plate 32, and causes excessive heat conducted from the first heat conducting area 113 to the bottom of the container 20 through the plate 32, so that uniform heating of the liquid at the bottom of the container 20 is not facilitated; if H2 is too large (e.g., greater than 5 mm), this may result in excessive cost of the second heat-conducting plate 3, and may result in excessive weight of the heat-generating plate assembly 10 as a whole, affecting the consumer's use experience, and the excessive weight of the heat-generating plate assembly 10 may be inconvenient to fix to the bottom of the container body 20.
Therefore, when the thickness H2 of the plate body 32 is 0.1mm to 5mm, the heat insulating effect of the plate body 32 can be ensured, and the weight of the heat generating plate assembly 10 can be appropriately reduced, and the cost of the heat generating plate assembly 10 can be reduced.
In one particular embodiment, as shown in fig. 5 and 6, the plate 32 has a first dimension L1, in a radial direction of the heat-generating plate assembly 10, satisfying: l1 is more than or equal to 25mm and less than or equal to 35mm. Specifically, the thickness may be 25mm, 26.5mm, 28mm, 30mm, 31.5mm, 33mm or 35mm, or may be other values within the above range, and the present embodiment is not limited thereto.
In this embodiment, as shown in fig. 5, there are a plurality of points on the bottom wall of the container body 20, where the line connecting the heat generating section 21 does not pass through the second heat conducting plate 3, wherein the point with the smallest linear distance from the heat generating section 21 is point a, the smallest distance from the point a to the heat generating section 21 is L2, and the first dimension L1 of the plate body 32 determines the size of the smallest distance L2.
As shown in fig. 7 and 8, t is the temperature of the bottom wall of the container body 20, L is the distance between the bottom wall of the container body 20 and the heat generating section 21, S1 is the relationship between the temperature of the bottom wall of the container body 20 and the distance L when the second heat conducting plate 3 is not provided, S2 is the relationship between the temperature of the region of the bottom wall of the container body 20, which conducts heat through the plate body 32, and the distance L when the second heat conducting plate 3 is provided, S3 is the relationship between the temperature of the region of the bottom wall of the container body 20, which does not conduct heat through the plate body 32, and the distance L when L is provided, and S3 is the temperature of the point a.
When L1 is too small (for example, less than 25 mm), the minimum distance L2 is too small, and at this time, along the thickness direction Z of the heat generating plate assembly 10, the point a corresponds to the position of the first heat conduction region 113, and the point a is dislocated from the plate body 32. Since L1 is smaller, the second heat-conducting plate 3 is not disposed in the partial area corresponding to the heat-generating section 21 on the first heat-conducting area 113, and the partial area conducts more heat to the bottom of the container body 20, so that the temperature of the corresponding portion (point a portion) of the bottom of the container body 20 is higher, the second heat-conducting plate 3 is disposed in the remaining area corresponding to the heat-generating section 21 around the partial area, and the heat conducted to the bottom of the container body 20 in the remaining partial area is less, so that the temperature of the corresponding portion (portion near the point a) of the bottom of the container body 20 is lower, and the bottom of the container body 20 is unevenly heated. Specifically, as can be seen from fig. 7, when L1 is too small, the minimum distance L2 is too small, at this time, the distance between the point a and the heating section 21 is relatively short, the area where the point a is located is not thermally conductive through the plate body 32, the temperature is relatively high, the temperature of the area near the point a is relatively low through the plate body 32, and the area on the first heat conductive plate 1 corresponding to the area near the point a is affected by the plate body 32, and thermally conductive to the area around the area corresponding to the point a, which finally results in the temperature of the point a being higher than the bottom wall temperature of the container body 20 when the second heat conductive plate 3 is not provided, resulting in a relatively large temperature difference between the area at the point a and the surrounding area, and the noise is likely to be generated due to local aggregation and rupture of bubbles at the point a.
When L1 is too large (for example, greater than 35 mm), the larger area of the plate body 32 may result in a decrease in the area of the boss 12, and at this time, along the thickness direction Z of the heat generating plate assembly 10, the point a corresponds to the position of the second heat conduction region 114, and the point a is dislocated from the plate body 32. Because the area of the plate 32 is larger, a part of the second heat conduction area 114 will conduct heat to the bottom of the container body 20 through the plate 32, in this case, one of the plate 32 will force the part to conduct heat in the lateral direction, and the other plate 32 will block the part to conduct heat to the bottom of the container body 20, so that the heat conducted to the bottom of the container body 20 by the part is greatly reduced, and the temperature of the corresponding position (the position near the point a) of the bottom of the container body 20 is lower. Moreover, because the area of the plate body 32 is larger, the heat conduction from the first heat conduction plate 1 to the bottom of the container body 20 is inconvenient, the first heat conduction plate 1 is forced to conduct heat in the transverse direction, and under the condition that the power of the heating plate assembly 10 is unchanged, the part of the second heat conduction region 114 which does not conduct heat through the plate body 32 receives more heat conducted from the first heat conduction region 113 and the part of the second heat conduction region 114 which conducts heat through the plate body 32, so that the heat conducted to the bottom of the container body 20 by the part of the second heat conduction region 114 which does not conduct heat through the plate body 32 is greatly increased, and the temperature of the corresponding part (point A part) at the bottom of the container body 20 is higher. Specifically, as shown in fig. 8, when L1 is too large, the minimum distance L2 is too large, at this time, the distance between the point a and the heating section 21 is far, the area where the point a is located is not thermally conductive through the plate body 32, the temperature is high, the temperature of the area near the point a is low through the plate body 32, and the area on the first heat conductive plate 1 corresponding to the area near the point a is affected by the plate body 32, and thermally conductive to the area around the area corresponding to the point a, which finally results in the temperature of the point a being higher than the bottom wall temperature of the container body 20 when the second heat conductive plate 3 is not provided, resulting in a large temperature difference between the point a and the surrounding area, and the point a is prone to generate noise due to local aggregation and rupture of bubbles.
Therefore, when L1 is 25mm to 35mm, uniform heat conduction from the heat generating plate assembly 10 to the bottom of the container body 20 can be ensured. Further, when L1 satisfies 25mm to 35mm, L2 is preferably 16.24mm.
The point a is not a specific point, but is merely a partial region where the bottom of the container body 20 has a relatively high temperature, and a plurality of points a may be present on the bottom wall of the container body 20 along the circumferential direction of the heat generating plate assembly 10.
In this embodiment, there are two ways of conducting heat from the heat generating section 21 of the heat generating tube 2 to the bottom of the container body 20, one is that the heat generating section 21 is conducted to the plate body 32 through the first heat conducting area 113 of the first heat conducting plate 1, and then conducted to the bottom of the container body 20 through the plate body 32, i.e. the first heat conducting area 113 and the plate body 32 together form a high temperature heat conducting area; the other is that the heat-generating section 21 is directly conducted to the bottom of the container body 20 through the second heat-conducting area 114 and the protruding portion 12, i.e. the second heat-conducting area 114 and the protruding portion 12 together form a low-temperature heat-conducting area. The thermal resistance of the first mode should be greater than or equal to the thermal resistance of the second mode to achieve uniform heat conduction from the heat-generating plate assembly 10 to the container body 20.
The thermal resistance calculation formula of the thermal conduction model is as follows:
Rth＝L/λ·S
where L is a heat conduction distance (m), S is a cross-sectional area (m 2) of the heat conduction channel, and λ is a heat conduction coefficient (W/mK).
Then the high temperature heat transfer area and the low temperature heat transfer area should satisfy the following relationship: r is R th1 ≥R th2 I.e. H1/lambda 1 ·S+H2/λ 2 ·S≥L2/λ 1 ·S。
Wherein H1 is a heat conduction distance of the first heat conduction region 113, i.e., a thickness of the body 11; lambda (lambda) 1 Is the heat conduction coefficient of the first heat conduction plate 1; s is the sectional area of a heat conduction channel of the heating plate component, namely the bottom area of the container body; h2 is the heat conduction distance of the plate 32, i.e., the thickness of the plate 32; lambda (lambda) 2 Is the thermal conductivity of the plate 32; l2 is the heat transfer distance of the low temperature heat transfer area, i.e. the minimum distance from point a to the heat generating section 21.
According to the following table, the material of the first heat-conducting plate 1 may be selected to be aluminum, and the material of the second heat-conducting plate 3 may be selected to be high manganese steel.
The thermal conductivity of the commonly used solid materials is shown in the following table:
when the first heat conducting plate 1 is aluminum and the second heat conducting plate 3 is high manganese steel, the thermal resistance of the first heat conducting mode (heat conducting in the high temperature area) is as follows:
R th1 ＝H1/λ 1 ·S+H2/λ 2 ·S
wherein, H1 takes 2mm, H2 takes 0.8mm, lambda 1 230W/m.K, lambda 2 Is 12.979W/m.K,
calculate the available R th1 ＝(0.703×10 -3 )/S。
When the first heat conducting plate 1 is aluminum and the second heat conducting plate 3 is high manganese steel, the thermal resistance of the second heat conducting mode (heat conducting in the low temperature area) is:
R th2 ＝L2/λ 1 ·S
wherein L2 is 16.24mm, lambda 1 Is set to be 230W/m.K,
calculate the available R th2 ＝(0.7×10 -3 )/S。
Therefore, in this embodiment, the materials of the first heat-conducting plate 1 and the second heat-conducting plate 3 can meet the thermal resistance of the high-temperature heat-conducting area being greater than or equal to the thermal resistance of the low-temperature heat-conducting area, so as to achieve the effect of peak clipping and valley filling, so that the overall thermal resistance of the heating plate assembly 10 can reach better balance, uniform heat conduction from the heating plate assembly 10 to the container body 20 is realized, the heat conduction at the bottom of the container body 20 is more uniform, and finally the effect of heating and silencing is realized.
In addition, the aluminum and the high manganese steel have the advantages of low cost, difficult corrosion and rust, and the like.
When designing the heat generating plate assembly 10, H1, H2, λ 1 、λ 2 And L2 may be designed according to actual needs, for example, values of H1, H2, and L2 may be set according to space dimensions, and materials of the first heat conductive plate 1 and the second heat conductive plate 3 may be selected correspondingly, or materials of the first heat conductive plate 1 and the second heat conductive plate 3 may be selected according to cost budget and material characteristics, and then specific designs may be performed on H1, H2, and L2. The present embodiment is not limited to this, and only needs to satisfy the condition that the thermal resistance of the first heat conduction mode is equal to or greater than the thermal resistance of the second heat conduction mode.
The foregoing is merely a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and variations may be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims (10)
1. A heat-generating plate assembly, comprising:
a first heat-conducting plate (1) comprising a main body (11) and a protruding part (12), wherein the main body (11) comprises a first surface (111) and a second surface (112) which are oppositely arranged, the protruding part (12) is arranged on the second surface (112) and protrudes towards a direction away from the first surface (111), and the protruding part (12) is used for abutting against the bottom wall of a container body (20);
the heating tube (2) is arranged on the first surface (111), and the heating tube (2) comprises a heating section (21) and connecting sections (22) positioned at two ends of the heating section (21);
wherein the main body (11) comprises a first heat conduction area (113) and a second heat conduction area (114), the heating section (21) is positioned in the first heat conduction area (113), and the connecting section (22) is positioned in the second heat conduction area (114);
the shape of the protruding part (12) is the same as that of the second heat conduction area (114), and the protruding part (12) and the second heat conduction area (114) are aligned along the thickness direction of the heating plate assembly (10).
2. The heat-generating plate assembly of claim 1, wherein the second thermally conductive region (114) comprises a first sub-region (114 a) and a second sub-region (114 b), the first sub-region (114 a) being circular;
the second sub-area (114 b) is in a fan ring shape, and one end of the second sub-area (114 b) is communicated with the first sub-area (114 a) along the radial direction of the heating disc assembly (10).
3. The heat-generating plate assembly according to claim 1, wherein the heat-generating plate assembly (10) further comprises a second heat-conducting plate (3), the second heat-conducting plate (3) being provided to the second surface (112), the second heat-conducting plate (3) comprising a plate body (32) and a through hole (31) provided on the plate body (32), the protruding portion (12) being accommodated within the through hole (31);
the thermal conductivity of the plate body (32) is smaller than that of the first thermal conductive plate (1).
4. A heat-generating plate assembly as claimed in claim 3, characterized in that the first heat-conducting area (113) and the plate body (32) together form a high-temperature heat-conducting area, and the second heat-conducting area (114) and the raised portion (12) together form a low-temperature heat-conducting area;
the high temperature heat transfer area and the low temperature heat transfer area satisfy the following relation: h1/lambda 1 ·S+H2/λ 2 ·S≥L2/λ 1 ·S；
Wherein H1 is the heat conduction distance lambda of the first heat conduction region (113) 1 S is the sectional area of the heat conduction channel of the heating plate component, H2 is the heat conduction distance of the plate body (32), lambda is the heat conduction coefficient of the first heat conduction plate (1) 2 L2 is the thermal conduction distance of the low temperature heat transfer area, which is the thermal conductivity of the plate body (32).
5. The heat-generating plate assembly as recited in claim 4, wherein a heat conduction distance H1 of the first heat-conducting region (113) is a thickness of the main body (11), H1 satisfying: h1 is less than or equal to 1.5mm and less than or equal to 5mm.
6. The heat-generating plate assembly as recited in claim 4, wherein the heat conduction distance H2 of the plate body (32) is a thickness of the plate body (32), H2 satisfying: h2 is more than or equal to 0.1mm and less than or equal to 5mm.
7. A hotplate assembly according to claim 3, wherein the plate body (32) has a first dimension L1, in a radial direction of the hotplate assembly (10) satisfying: l1 is more than or equal to 25mm and less than or equal to 35mm.
8. A hotplate assembly according to claim 3, wherein the diameter of the body (11) is D1 and the diameter of the second thermally conductive plate (3) is D2, D1< D2.
9. A heat generating disc assembly as claimed in any of claims 3-8, characterized in that the material of the first heat conducting plate (1) is aluminium and the material of the second heat conducting plate (3) is high manganese steel.
10. A liquid heating vessel comprising:
a container body (20) for containing a liquid;
-a heat generating plate assembly (10), the heat generating plate assembly (10) being a heat generating plate assembly (10) according to any one of claims 1-9, the heat generating plate being mounted to the bottom of the container body (20) for heating a liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322115088.9U CN220675820U (en) | 2023-08-07 | 2023-08-07 | Heating plate assembly and liquid heating container |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322115088.9U CN220675820U (en) | 2023-08-07 | 2023-08-07 | Heating plate assembly and liquid heating container |
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| Publication Number | Publication Date |
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| CN220675820U true CN220675820U (en) | 2024-03-29 |
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| CN202322115088.9U Active CN220675820U (en) | 2023-08-07 | 2023-08-07 | Heating plate assembly and liquid heating container |
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2023
- 2023-08-07 CN CN202322115088.9U patent/CN220675820U/en active Active
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