Heating device
By using a two-layer structure design, the bottom and side walls of the towel heating device are heated evenly using heating modules and heat-conducting structures, which solves the problems of uneven heat distribution and increased cost in existing technologies and improves heating efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHENSHI LUTEJIACHENG SUPPLYCHAIN MANAGEMENT CO LTD
- Filing Date
- 2025-05-30
- Publication Date
- 2026-06-02
AI Technical Summary
Existing towel heating devices typically have their heating structure located at the bottom of the tub, causing heat to accumulate at the bottom of the towels, resulting in uneven heating at the top. Additionally, installing heating wires on the outer wall of the tub increases costs.
It adopts a two-layer structure, with a heating module inside the outer barrel and a heat-conducting structure on the outside of the inner barrel. Part of the hot air flow heats the bottom of the barrel, and the other part heats the side wall of the barrel through the heat-conducting structure, so as to achieve uniform heating.
This technology enables simultaneous and uniform heating of the bottom and sidewalls of the towel, improving heating efficiency and avoiding problems such as uneven heat distribution and increased costs.
Smart Images
Figure CN224319534U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of household appliance technology, and in particular to a heating device. Background Technology
[0002] A towel heater is a small household appliance whose main function is to heat and keep towels warm so that they can provide a warm and comfortable experience when used.
[0003] Currently, the heating element of towel heating devices is generally located at the bottom of the container. During use, when too many towels are added, heat accumulates at the bottom, leaving the tops unheated or poorly heated. Therefore, some existing towel heating devices have heating wires fixed to the side wall of the container, heating the entire device and thus the towels. The disadvantage is that the heat from the heating wires is not uniform; the area near the wires is hotter than the area further away, and the additional heating wires on the outer wall of the container increase costs. Utility Model Content
[0004] The main purpose of this invention is to provide a heating device that can simultaneously and uniformly heat the bottom and side walls of a bucket.
[0005] To achieve the above objectives, the present invention proposes a heating device comprising an outer tub, a heating module, and an inner tub. The outer tub has a first receiving cavity with an opening. The heating module is disposed at the bottom of the first receiving cavity. The inner tub is disposed in the first receiving cavity and has a second receiving cavity with an opening, the second receiving cavity being used to place the item to be heated. A portion of the hot airflow generated by the heating module heats the item located in the second receiving cavity; another portion flows into the space between the inner tub and the outer tub to heat the peripheral wall of the inner tub, thereby heating the item to be heated.
[0006] In one embodiment, a heat-conducting structure is provided on the outer side of the peripheral wall of the inner tub. The heat-conducting structure includes an installation plate spaced apart from the peripheral wall of the inner tub, and a flow guide strip is provided on the side of the installation plate facing the peripheral wall of the inner tub.
[0007] In one embodiment, the guide strips are provided in multiple ways, each guide strip extending along the circumferential direction of the inner barrel's peripheral wall, and the multiple guide strips are arranged at intervals along the depth direction of the inner barrel.
[0008] In one embodiment, at least two of the guide strips are arranged at circumferential intervals, and an air passage is formed between two adjacent guide strips arranged at circumferential intervals. Along the depth direction of the inner barrel, a plurality of air passages are staggered.
[0009] In one embodiment, the heat-conducting structure has an opening at the bottom for the flow of heated air.
[0010] In one embodiment, a through hole is provided at the bottom of the second receiving cavity, and the first receiving cavity communicates with the second receiving cavity through the through hole.
[0011] In one embodiment, the heating module is disposed between the bottom wall of the inner tub and the bottom wall of the outer tub, the through hole is disposed on the outer side of the bottom wall of the inner tub, and the projection of the through hole along the depth direction of the inner tub does not coincide with the projection of the heating module along the depth direction of the inner tub.
[0012] In one embodiment, the heating device has a heating cavity that communicates with the through hole. The heating module includes a heating element and a fan. The heating element is disposed inside the heating cavity, and the fan is used to provide airflow into the heating cavity.
[0013] In one embodiment, the heat-conducting structure has an opening at the bottom, and the heating cavity communicates with the opening at the bottom of the heat-conducting structure.
[0014] In one embodiment, the heating device further includes a cover that is detachably connected to the outer barrel.
[0015] The heating device proposed in this utility model comprises two layers, an inner and an outer layer. A heating module is disposed within the first receiving cavity of the outer drum, and the inner drum is also disposed within the first receiving cavity. The heating module heats the entire first receiving cavity, indirectly heating the side walls of the inner drum. During normal use, part of the heat flow generated by the heating module heats the bottom of the inner drum and the item being heated in the second receiving cavity, while the other part diffuses into the first receiving cavity between the inner and outer drums, heating the side walls of the inner drum. This achieves simultaneous heating of the bottom and side walls, improving the heating efficiency of the item. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0017] Figure 1 A schematic diagram of the structure of an embodiment of the heating device provided by this utility model;
[0018] Figure 2 A cross-sectional schematic diagram of another embodiment of the heating device provided by this utility model;
[0019] Figure 3A schematic diagram of an embodiment of the heat-conducting structure in the heating device provided by this utility model.
[0020] Explanation of icon numbers:
[0021] 100. Heating device; 1. Outer barrel; 11. First receiving cavity; 2. Heating module; 21. Fan; 22. Heating element; 3. Inner barrel; 31. Second receiving cavity; 311. Through hole; 4. Heat-conducting structure; 41. Mounting plate; 42. Guide strip; 43. Air passage; 5. Cover; 6. Heating cavity.
[0022] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0024] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.
[0025] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0026] A towel heater is a small household appliance whose main function is to heat and keep towels warm so that they can provide a warm and comfortable experience when used.
[0027] Currently, the heating element of towel heating devices is generally located at the bottom of the container. During use, when too many towels are added, heat accumulates at the bottom, leaving the tops unheated or poorly heated. Therefore, some existing towel heating devices have heating wires fixed to the side wall of the container, heating the entire device and thus the towels. The disadvantage is that the heat from the heating wires is not uniform; the area near the wires is hotter than the area further away, and the additional heating wires on the outer wall of the container increase costs.
[0028] This utility model proposes a heating device designed to simultaneously and uniformly heat the bottom and side walls of a bucket.
[0029] Please see Figures 1 to 3 In one embodiment of this utility model, the heating device 100 includes an outer barrel 1, a heating module 2, and an inner barrel 3. The outer barrel 1 has a first receiving cavity 11 with an opening. The heating module 2 is disposed at the bottom of the first receiving cavity 11. The inner barrel 3 is disposed in the first receiving cavity 11 and has a second receiving cavity 31 with an opening. The second receiving cavity 31 is used to place the item to be heated. A portion of the hot airflow generated by the heating module 2 heats the item to be heated located in the second receiving cavity 31. Another portion flows into the space between the inner barrel 3 and the outer barrel 1 to heat the peripheral wall of the inner barrel 3, thereby heating the item to be heated.
[0030] In this embodiment, the outer tub 1 and the inner tub 3 can be made of metal, such as stainless steel, or of rigid plastic. In a preferred embodiment, the outer tub 1 can be made of double-layered material, with insulation material inside to reduce heat loss through the outer tub 1 and improve the insulation performance of the heating device 100. The heating module 2 is disposed in the first receiving cavity 11 of the outer tub 1. The heating module 2 can be a PTC heating element, which consists of a PTC ceramic heating element and an aluminum tube, and has the advantages of low thermal resistance and high heat exchange efficiency; it can also be an electric heating tube or other heating device, without further limitation. In a preferred embodiment, the heating module 2 also includes a fan 21, which is disposed at the lower part of the heating element to carry away the heat generated by the heating element through airflow, thereby improving heating efficiency. The inner tub 3 has a second receiving cavity 31, which is used to place items to be heated, such as towels. When the heating module 2 is working, the heat output by the heating module 2 can be diffused into the first receiving cavity 11 through thermal convection. Part of the heat flow corresponds to heating the bottom wall of the inner barrel 3, and the other part of the heat flows in to achieve simultaneous heating of the outer wall and the interior of the inner barrel 3.
[0031] The heating device 100 proposed in this utility model comprises inner and outer layers. A heating module 2 is disposed within the first receiving cavity 11 of the outer barrel 1, and an inner barrel 3 is also disposed within the first receiving cavity 11. The heating module 2 heats the entire first receiving cavity 11, indirectly heating the sidewalls of the inner barrel 3. During normal use, part of the heat flow generated by the heating module 2 heats the bottom of the inner barrel 3 and the items being heated within the second receiving cavity 31. The other part diffuses heat into the first receiving cavity 11 between the inner barrel 3 and the outer barrel 1, heating the sidewalls of the inner barrel 3. This achieves simultaneous heating of the bottom and sidewalls, improving the heating efficiency of the items.
[0032] In an embodiment of this utility model, a heat-conducting structure 4 is provided on the outer side of the peripheral wall of the inner barrel 3. The heat-conducting structure 4 includes an installation plate 41 spaced apart from the peripheral wall of the inner barrel 3. A guide strip 42 is provided on the side of the installation plate 41 facing the peripheral wall of the inner barrel 3.
[0033] In this embodiment, the heat-conducting structure 4 is disposed on the outer side of the peripheral wall of the inner barrel 3. The heat-conducting structure 4 includes a mounting plate 41 and a guide strip 42. The mounting plate 41 is spaced apart from the peripheral wall of the inner barrel 3. It can be understood that the size between the mounting plate 41 and the peripheral wall of the inner barrel 3 is smaller than the size of the first receiving cavity 11, so that the heat can be more concentrated and the heating effect on the outer wall of the inner barrel 3 can be improved. One side of the guide strip 42 is connected to the surface of the mounting plate 41 facing the inner barrel 3. The mounting plate 41 and the guide strip 42 can be integrally molded by injection molding or connected by other connection methods such as adhesive bonding. The guide strip 42 plays a role in diverting the flow, so that the hot airflow distribution in the heat-conducting structure 4 is more uniform, improving the heating uniformity and heating effect.
[0034] In an embodiment of this utility model, multiple guide strips 42 are provided, each guide strip 42 extends along the circumferential direction of the inner barrel 3, and the multiple guide strips 42 are arranged at intervals along the depth direction of the inner barrel 3.
[0035] In this embodiment, there are multiple guide strips 42. The guide strips 42 extend along the circumferential direction of the inner barrel 3, and the multiple guide strips 42 are evenly distributed at intervals along the axial direction of the inner barrel 3. The multiple guide strips 42 separate the mounting plate 41 and the outer wall of the inner barrel 3 to form multiple sub-accommodating cavities. Two adjacent guide strips 42 along the depth direction of the inner barrel 3 are staggered so that each guide strip 42 is interconnected. The heat flow can be carried out through the multiple guide strips 42. The multiple guide strips 42 also play a guiding role, and at the same time maximize the heating of the barrel side wall of the inner barrel 3.
[0036] It is understood that in other embodiments, the guide strip 42 is a spiral structure. The guide strip 42 is spirally arranged around the outer wall of the inner barrel 3, dividing the third receiving cavity into a spiral upward air duct. The heat flow can be carried out through the spiral air duct, which plays the role of guiding the flow and maximizing the heating of the side wall of the heating device 100, so that the distribution of hot air flow in the third receiving cavity is more uniform, improving the heating uniformity and heating effect.
[0037] In an embodiment of this utility model, at least two guide strips 42 are arranged at intervals along the circumference, and an air passage 43 is formed between two adjacent guide strips 42 arranged at intervals along the circumference. Multiple air passages 43 are staggered along the depth direction of the inner barrel 3.
[0038] In this embodiment, at least two guide strips 42 extend along the circumferential direction of the inner barrel 3, and an air passage 43 is formed between two adjacent guide strips 42 to connect the two adjacent guide strips 42 along the depth direction of the inner barrel 3. The heat flow can be carried out through multiple guide strips 42. The multiple guide strips 42 also play a guiding role, and at the same time maximize the heating of the barrel side wall of the inner barrel 3.
[0039] In an embodiment of this utility model, the bottom opening of the heat-conducting structure 4 is provided so that the heating airflow can flow in.
[0040] In this embodiment, the bottom opening of the heat-conducting structure 4 is provided so that the space between the heat-conducting structure 4 and the outer wall of the inner barrel 3 is connected to the first receiving cavity 11. The hot airflow generated by the heating module 2 can flow into the space between the heat-conducting structure 4 and the outer wall of the inner barrel 3 through the bottom opening of the heat-conducting structure 4 to heat the outer wall of the inner barrel 3.
[0041] In an embodiment of this utility model, a through hole 311 is provided at the bottom of the second receiving cavity 31, and the first receiving cavity 11 is connected to the second receiving cavity 31 through the through hole 311.
[0042] In this embodiment, a portion of the hot airflow generated by the heating module 2 flows into the second receiving cavity 31 through the through hole 311 to directly heat the items in the second receiving cavity 31. During normal use, the hot airflow generated by the heating module 2 can enter the second receiving cavity 31 through the through hole 311, and can also enter the first receiving cavity 11 between the inner drum 3 and the outer drum 1 through heat diffusion, achieving the effect of heating the bottom and side walls simultaneously, thus improving the heating efficiency of the items. When too many items are filled, the hot airflow at the bottom cannot be blown out from the through hole 311 to the second receiving cavity 31, causing the hot airflow at the bottom to gradually accumulate, the temperature to rise, and the towel to overheat, causing yellowing or scorching. At this time, the hot airflow can be dispersed to the first receiving cavity 11 between the inner drum 3 and the outer drum 1, thereby alleviating the high temperature at the bottom.
[0043] In an embodiment of this utility model, the heating module 2 is disposed between the bottom wall of the inner tub 3 and the bottom wall of the outer tub 1, and the through hole 311 is disposed on the outer side of the bottom wall of the inner tub 3, and the projection of the through hole 311 along the depth direction of the inner tub 3 does not coincide with the projection of the heating module 2 along the depth direction of the inner tub 3.
[0044] In this embodiment, the heating module 2 is disposed between the bottom wall of the inner barrel 3 and the bottom wall of the outer barrel 1. The through hole 311 is opened on the outer side of the bottom wall of the inner barrel 3 so that the projection of the through hole 311 in the depth direction of the inner barrel 3 does not coincide with the projection of the heating module 2 in the depth direction of the inner barrel 3. That is, the through hole 311 and the heating module 2 are misaligned in the circumferential direction of the heating device 100, so that an airflow channel can be formed between the heating module 2 and the through hole 311, and the airflow can flow into the second receiving cavity 31 through the through hole 311 to heat the items in the inner barrel 3.
[0045] In an embodiment of this utility model, the heating device 100 has a heating cavity 6, which is connected to the through hole 311. The heating module 2 includes a heating element 22 and a fan 21. The heating element 22 is disposed in the heating cavity 6, and the fan 21 is used to provide airflow into the heating cavity 6.
[0046] In this embodiment, the heating chamber 6 is connected to the second receiving cavity 31 of the inner barrel 3 through the through hole 311. The heating chamber 6 can achieve the effect of centralized heating, allowing heat flow to directly enter the second receiving cavity 31, reducing heat loss and improving the heating effect of the heating device 100. The fan 21 is embedded in the bottom wall of the outer barrel 1 to communicate with the outside. The fan 21 can guide airflow from the bottom wall of the outer barrel 1. The airflow passes through the energized heating element 22, and the heat generated by the heating element 22 is transferred to the second receiving cavity 31 and the first receiving cavity 11 through the airflow, so as to simultaneously heat the inner wall and the outer peripheral wall of the inner barrel 3, thereby improving the heating effect of the heating device 100.
[0047] In an embodiment of this utility model, the bottom opening of the heat-conducting structure 4 is provided, and the heating cavity 6 is connected to the bottom opening of the heat-conducting structure 4.
[0048] In this embodiment, the bottom of the heat-conducting structure 4 is connected to the heating chamber 6 through an opening. The fan 21 is embedded in the bottom wall of the outer barrel 1 to communicate with the outside. The fan 21 can guide the airflow from the bottom wall of the outer barrel 1. The airflow passes through the electrically powered heating element 22 and transfers the heat generated by the heating element 22 in the heating chamber 6 to the second receiving cavity 31 and the space between the heat-conducting structure 4 and the outer peripheral wall of the inner barrel 3 through the airflow. This achieves the effect of simultaneously heating the inner wall and the outer peripheral wall of the inner barrel 3, thereby improving the heating effect of the heating device 100.
[0049] In an embodiment of this utility model, the heating device 100 further includes a cover 5, which is detachably connected to the outer barrel 1.
[0050] In this embodiment, the heating device 100 further includes a cover 5 connected to the barrel body. The cover 5 can reduce heat loss from the opening of the barrel body, thereby improving the overall heating and heat preservation effects of the heating device 100. In a preferred embodiment, the cover 5 has an internal structure filled with heat-insulating material and is rotatably connected to the edge of the opening of the barrel body. It can also achieve stepless hovering, preventing the cover 5 from rotating and affecting the retrieval of items.
[0051] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.
Claims
1. A heating device, characterized in that, The heating device includes: An outer tub having a first receiving cavity with an opening; A heating module, wherein the heating module is disposed at the bottom of the first receiving cavity; and An inner tub is disposed in the first receiving cavity, and the inner tub has a second receiving cavity with an opening for placing heated items. The hot airflow generated by the heating module heats the item located in the second receiving cavity; another part flows into the space between the inner barrel and the outer barrel to heat the peripheral wall of the inner barrel, thereby heating the item being heated.
2. The heating device as described in claim 1, characterized in that, A heat-conducting structure is provided on the outer side of the inner barrel's peripheral wall. The heat-conducting structure includes an installation plate spaced apart from the peripheral wall of the inner barrel, and a flow guide strip is provided on the side of the installation plate facing the peripheral wall of the inner barrel.
3. The heating device as described in claim 2, characterized in that, The guide strips are configured in multiple ways, each guide strip extending along the circumferential direction of the inner barrel's peripheral wall, and the multiple guide strips are arranged at intervals along the depth direction of the inner barrel.
4. The heating device as described in claim 3, characterized in that, At least two of the aforementioned guide strips are arranged at intervals along the circumference, and an air passage is formed between two adjacent guide strips arranged at intervals along the circumference. Multiple air passages are staggered along the depth direction of the inner barrel.
5. The heating device as described in claim 4, characterized in that, The heat-conducting structure has an opening at the bottom, allowing hot airflow to enter.
6. The heating device as described in claim 2, characterized in that, The bottom of the second receiving cavity has a through hole, and the first receiving cavity communicates with the second receiving cavity through the through hole.
7. The heating device as described in claim 6, characterized in that, The heating module is disposed between the bottom wall of the inner tub and the bottom wall of the outer tub. The through hole is disposed on the outer side of the bottom wall of the inner tub, and the projection of the through hole along the depth direction of the inner tub does not coincide with the projection of the heating module along the depth direction of the inner tub.
8. The heating device as described in claim 6, characterized in that, The heating device has a heating cavity that communicates with the through hole. The heating module includes a heating element and a fan. The heating element is disposed in the heating cavity, and the fan is used to provide airflow into the heating cavity.
9. The heating device as described in claim 8, characterized in that, The heat-conducting structure has an opening at the bottom, and the heating cavity is connected to the opening at the bottom of the heat-conducting structure.
10. The heating device according to any one of claims 1 to 7, characterized in that, The heating device also includes a cover, which is detachably connected to the outer barrel.