Heating plate assembly and hair straightener

Abstract

This utility model discloses a heating plate assembly and a hair straightener. The heating plate assembly includes a heating element, a curling plate, a heat-conducting plate, a first cavity, and a second cavity. The heating element is disposed between the curling plate and the heat-conducting plate. The heat-conducting plate forms part of the cavity wall of the first cavity and part of the cavity wall of the second cavity. A partition is provided between the first cavity and the second cavity, and the partition has a vent connecting the first cavity wall and the second cavity. The first cavity has a liquid inlet, and the second cavity has a steam outlet, which is located facing the side of the curling plate away from the heating element. This utility model's technical solution can reduce the risk of liquid leakage from the steam outlet.

Description

Technical Field

[0001] This utility model relates to the field of hairdressing equipment, and in particular to a heating plate assembly and a hair straightener. Background Technology

[0002] A hair straightener is a household appliance that uses an electric current to heat a built-in heating element (such as MCH, PTC, or heating wire), and then uses an aluminum plate to conduct heat to achieve hair styling. Some hair straighteners now include a steam unit that sprays steam onto the hair during the straightening process to moisturize and reduce hair damage. To ensure effective steam output, the distance between the steam outlet and the steam generating chamber is generally minimized to reduce water droplet formation during steam delivery. However, a shorter distance can also lead to water leakage from the steam generating chamber, affecting the steam's effectiveness and potentially causing burns. Utility Model Content

[0003] The main objective of this invention is to provide a heating plate assembly designed to reduce the risk of liquid leakage from the steam outlet.

[0004] To achieve the above objectives, the present invention proposes a heating plate assembly comprising a heating element, a hair-curling plate, a heat-conducting plate, a first cavity, and a second cavity. The heating element is disposed between the hair-curling plate and the heat-conducting plate. The heat-conducting plate forms part of the cavity wall of the first cavity and part of the cavity wall of the second cavity. A partition is provided between the first cavity and the second cavity, and the partition has a vent connecting the first cavity and the second cavity. The first cavity has a liquid inlet, and the second cavity has a steam outlet, which is disposed facing the side of the hair-curling plate away from the heating element.

[0005] Optionally, the first cavity is provided with a first water-absorbing element, which is attached to the heat-conducting plate.

[0006] Optionally, the hair-curling plate and the heat-conducting plate are integrally formed and have an installation cavity with both ends through them, and the heating element is disposed in the installation cavity.

[0007] Optionally, the heating plate assembly further includes a sealing member, which is sleeved around the periphery of the mounting cavity and covers the openings at both ends of the mounting cavity. The sealing member has a wire passage hole corresponding to one end opening of the mounting cavity.

[0008] Optionally, the heat-conducting plate has an extension that extends out from the long side of the hair-curling plate, the steam outlet is located on the extension, the sealing member covers the extension and has an outlet corresponding to the position of the steam outlet.

[0009] Optionally, the steam outlet is an elongated strip extending along the length of the perming plate, and there are multiple outlets that are spaced apart along the length of the perming plate.

[0010] Optionally, the heat-conducting plate has an extension that extends relative to the long side of the hair-curling plate, and the steam outlet is located in the extension.

[0011] Optionally, a first check valve is provided at the liquid inlet.

[0012] Optionally, the heating plate assembly further includes a mounting base with a first groove and a second groove. The side of the heat-conducting plate opposite to the heating element covers the first groove and the second groove to form the first cavity at the first groove and the second cavity at the second groove.

[0013] Optionally, the heating plate assembly further includes a sealing element having a first annular portion and a second annular portion connected as one piece, the first annular portion being disposed around the opening of the first groove, and the second annular portion being disposed around the opening of the second groove.

[0014] Optionally, the heat-conducting plate has two limiting structures on the side opposite to the heating element. The two limiting structures are distributed at intervals along the width direction of the heat-conducting plate. Each limiting structure has a limiting part that extends toward the other limiting structure and is spaced apart from the heat-conducting plate. The mounting seat is disposed between the limiting part and the heat-conducting plate.

[0015] This utility model also proposes a hair straightener, including a housing, a liquid supply device, and at least one heating plate assembly as described above. The housing includes two clamping plates that are hinged to each other. The heating plate assembly is disposed on the clamping plates, and the liquid supply device is connected to the liquid inlet of the heating plate assembly.

[0016] The beneficial effects of this invention are as follows: By setting a heat-conducting plate on the side of the heating element away from the curling plate, and making the heat-conducting plate form part of the cavity wall of the first cavity and part of the cavity wall of the second cavity, and providing a liquid inlet in the first cavity and a steam outlet in the second cavity, during use, the liquid first enters the first cavity. The partition between the first and second cavities, as well as the second cavity itself, can prevent the liquid from flowing directly to the steam outlet. Even if some liquid flows into the second cavity through the vent on the partition or steam accumulates in the second cavity to form droplets, it can be heated by the heating plate, causing the liquid in the second cavity to evaporate and form steam. This effectively reduces the risk of liquid leakage from the steam outlet, ensuring the steam output effect while reducing the risk of burns to the user due to high-temperature liquid leakage. Attached Figure Description

[0017] 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.

[0018] Figure 1 This is a schematic diagram of the structure of an embodiment of the heating plate assembly of this utility model;

[0019] Figure 2 for Figure 1 Cross-sectional view of the heating plate assembly;

[0020] Figure 3 for Figure 1 A cross-sectional view of another location of the heating plate assembly;

[0021] Figure 4 for Figure 3 A structural diagram of the perm plate, heat-conducting plate, and sealing component;

[0022] Figure 5 for Figure 3 A structural schematic diagram of the mounting base, check valve, and seals;

[0023] Figure 6 This is a schematic diagram of the structure of an embodiment of the hair straightener of this utility model;

[0024] Figure 7 for Figure 6 A cross-sectional view of a hair straightener.

[0025] Explanation of icon numbers:

[0026] 10. Heating plate assembly; 11. Heating element; 12. Hair curling plate; 13. Heat conducting plate; 131. Steam outlet; 132. Extension; 133. Limiting structure; 141. First cavity; 142. Second cavity; 143. Mounting cavity; 15. Mounting base; 151. First tank; 152. Second tank; 153. Liquid inlet; 154. Partition; 155. Vent; 161. First water suction element; 162. Check valve; 17. Sealing element; 171. Wire hole; 172. Outlet; 18. Sealing element; 20. Housing; 21. Clamping plate; 22. Protrusion; 30. Liquid supply device; 31. Water tank; 32. Elastic airbag; 40. Conventional heating plate.

[0027] 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

[0028] 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 protection scope of the present utility model.

[0029] 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 certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0030] 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 meaning of "and / or" throughout the text is to include three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. 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.

[0031] This invention proposes a heating plate assembly for use in a hair straightener.

[0032] In the embodiments of this utility model, such as Figures 1 to 5 As shown, the heating plate assembly 10 has a heating element 11, a hair-curling plate 12, a heat-conducting plate 13, a first cavity 141, and a second cavity 142. The heating element 11 is disposed between the hair-curling plate 12 and the heat-conducting plate 13. The heat-conducting plate 13 forms part of the cavity wall of the first cavity 141 and part of the cavity wall of the second cavity 142. A partition 154 is provided between the first cavity 141 and the second cavity 142. The partition 154 has a vent 155 that connects the first cavity 141 and the second cavity 142. The first cavity 141 has a liquid inlet 153, and the second cavity 142 has a steam outlet 131. The steam outlet 131 is disposed facing the side of the hair-curling plate 12 away from the heating element 11.

[0033] Specifically, when the heating plate assembly 10 is used in a hair straightener, the curling plate 12 is used to contact and heat the hair. The liquid inlet 153 is connected to the liquid supply device 30, allowing liquid (such as purified water) to be injected into the first cavity 141. Since the heat-conducting plate 13 forms part of the cavity wall of the first cavity 141, when liquid is injected into the first cavity 141, the liquid can contact the heat-conducting plate 13, thereby using the heat generated by the heating element 11 and conducted to the heat-conducting plate 13 to heat the liquid in the first cavity 141 to generate steam. The generated steam flows through the vent 155 to the second cavity 142, and finally is ejected from the steam outlet 131 onto the hair in contact with the curling plate 12. This allows steam to be applied to the hair during the straightening process, which can moisturize and enhance the hair's shine, while reducing heat damage.

[0034] This invention provides a heat-conducting plate 13 on the side of the heating element 11 away from the curling plate 12, forming part of the wall of the first cavity 141 and part of the wall of the second cavity 142. The first cavity 141 has a liquid inlet 153, and the second cavity 142 has a steam outlet 131. During use, the liquid first enters the first cavity 141. The partition 154 between the first and second cavities 141 and 142, as well as the second cavity 142 itself, prevents the liquid from flowing directly to the steam outlet 131. Even if some liquid flows to the second cavity 142 through the vent 155 on the partition 154, or if steam accumulates in the second cavity 142 to form droplets, it can be heated by the heating plate, causing the liquid in the second cavity 142 to evaporate and form steam. This effectively reduces the risk of liquid leakage from the steam outlet 131, ensuring both effective steam output and reducing the risk of burns to the user due to high-temperature liquid leakage.

[0035] In some embodiments, a first absorbent element 161 is provided inside the first cavity 141, and the first absorbent element 161 is attached to the heat-conducting plate 13. When liquid enters the first cavity 141, it enters the first absorbent element 161, and the water in the first absorbent element 161 evaporates under the action of heat. This can prevent liquid that has not been evaporated in the first cavity 141 from flowing to the second cavity 142, effectively preventing leakage. The first absorbent element 161 can be a washable cotton or a porous ceramic plate, etc.

[0036] In some embodiments, a second absorbent element is provided inside the second cavity 142, and the second absorbent element is attached to the heat-conducting plate 13. The first absorbent element 161 can be a washable cotton or a porous ceramic plate, etc. This prevents unevaporated liquid in the second cavity 142 from flowing to the steam outlet 131, effectively preventing leakage. Optionally, to prevent the second absorbent element from blocking the steam generated in the first cavity 141, the thickness of the second absorbent element is less than the height of the second cavity 142, that is, the surface of the second absorbent element away from the heat-conducting plate 13 is spaced from the cavity wall of the second cavity 142 (opposite to the heat-conducting plate 13).

[0037] In some embodiments, the heat-conducting plate 13 has an extension 132 that extends out from the long side of the perming plate 12, and a steam outlet 131 is disposed in the extension 132. This separates the steam outlet 131 from the perming plate 12, reducing the impact of steam on the perming plate 12, simplifying the structure of the perming plate 12, and ensuring the airtightness of the space where the heating element 11 is located, effectively preventing steam from entering the space where the heating element 11 is located. In other embodiments, the perming plate 12 has mounting holes, and the steam outlet 131 is disposed corresponding to the mounting holes.

[0038] In some embodiments, the perming plate 12 and the heat-conducting plate 13 are integrally formed and have a mounting cavity 143 extending through both ends, with the heating element 11 disposed in the mounting cavity 143. Specifically, the perming plate 12 and the heat-conducting plate 13 can be fabricated from profiles. By making the perming plate 12 and the heat-conducting plate 13 an integral structure, the number of parts in the heating plate assembly 10 can be reduced, which is beneficial for reducing storage costs. It can also reduce the fixing structure between the perming plate 12, the heating element 11, and the heat-conducting plate 13, simplifying the structure of the heating plate assembly 10 and improving assembly efficiency.

[0039] In some embodiments, the heating plate assembly 10 further includes a sealing member 17, which is sleeved around the periphery of the mounting cavity 143 and covers the openings at both ends of the mounting cavity 143. The sealing member 17 has a wire-passing hole 171 corresponding to one end opening of the mounting cavity 143. This improves the dust and water resistance of the mounting cavity 143 and reduces the risk of liquid ingress. Optionally, the sealing member 17 is a silicone component, specifically a high-temperature resistant silicone component, to ensure reliable operation.

[0040] In some embodiments, the sealing member 17 covers the extension 132 and has an outlet 172 corresponding to the position of the steam outlet 131. This facilitates the provision of the outlet 172 structure on the sealing member 17 to guide steam out and improve the steam jetting effect. Compared to providing a specific steam outlet 131 on the extension 132, the sealing member 17 is easier to form, which can reduce production difficulty and production cost.

[0041] In some embodiments, the steam outlet 131 is an elongated strip extending along the length of the perming plate 12, and there are multiple outlets 172, which are spaced apart along the length of the perming plate 12. This elongated design of the steam outlet 131 simplifies the structure of the heat-conducting plate 13 and facilitates manufacturing. Furthermore, the spaced distribution of multiple outlets 172 along the length of the perming plate 12 ensures more uniform steam jetting along its length.

[0042] In some embodiments, a check valve 162 is provided at the liquid inlet 153. That is, the check valve 162 can prevent the liquid and steam in the first cavity 141 from flowing back from the liquid inlet 153, ensuring that the steam can flow fully to the steam outlet 131.

[0043] In some embodiments, the heating plate assembly 10 further includes a mounting base 15, which has a first groove 151 and a second groove 152. The side of the heat-conducting plate 13 opposite to the heating element 11 covers the first groove 151 and the second groove 152 to form a first cavity 141 in the first groove 151 and a second cavity 142 in the second groove 152. That is, the mounting base 15 and the heat-conducting plate 13 are separately formed and then assembled together, so that the heat-conducting plate 13 covers the first groove 151 to form the first cavity 141 and covers the second groove 152 to form the second cavity 142. The liquid inlet 153 is provided in the bottom wall of the first groove 151 (i.e., the groove wall opposite to the groove opening). This structure is simple and easy to form. Of course, in other embodiments, the heating plate assembly 10 also has a base plate located on the side of the heat-conducting plate 13 away from the hair-curling plate 12. The base plate, the hair-curling plate 12 and the heat-conducting plate 13 are integrally formed, and a first cavity 141 and a second cavity 142, both of which are through at both ends, are formed between the base plate and the heat-conducting plate 13. The two ends of the first cavity 141 and the second cavity 142 are sealed by a sealing member 17.

[0044] In some embodiments, the heating plate assembly 10 further includes a seal 18, which has a first annular portion and a second annular portion integrally connected. The first annular portion is disposed around the opening of the first groove 151, and the second annular portion is disposed around the opening of the second groove 152. This further reduces the risk of leakage and reduces the number of seals 18, facilitating installation and improving assembly efficiency. Optionally, the seal 18 may be made of high-temperature resistant rubber composite material or high-temperature resistant silicone composite material.

[0045] In some embodiments, the heat-conducting plate 13 has two limiting structures 133 on the side opposite to the heating element 11. The two limiting structures 133 are spaced apart along the width direction of the heat-conducting plate 13. Each limiting structure 133 has a limiting portion extending toward the other limiting structure 133 and spaced apart from the heat-conducting plate 13. The mounting base 15 is disposed between the limiting portion and the heat-conducting plate 13. In this way, the heating plate assembly 10 can be assembled into an integral module, which facilitates the assembly of the hair straightener.

[0046] This utility model also proposes a hair straightener; please refer to the references. Figure 6 and Figure 7 The hair straightener includes a housing 20, a liquid supply device 30, and at least one of the aforementioned heating plate assemblies 10. The specific structure of the heating plate assembly 10 is as described in the above embodiments. Since this hair straightener adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be described in detail here. The housing 20 includes two clamping plates 21 that are hinged to each other. The heating plate assembly 10 is disposed on the clamping plates 21, and the liquid supply device 30 is connected to the liquid inlet 153 of the heating plate assembly 10.

[0047] Specifically, at least one clamping plate 21 is provided with the above-mentioned heating plate assembly 10. In this embodiment, one clamping plate 21 is provided with the above-mentioned heating plate assembly 10, and the other clamping plate 21 is provided with a conventional heating plate 40 (i.e., a normal heating plate structure without the first cavity 141, the second set of cavities and the steam outlet 131). The heating plate assembly 10 and the conventional heating plate 40 are arranged opposite to each other so that they can clamp and heat the hair together when the two clamping plates 21 are closed.

[0048] In another embodiment, each clamp 21 is provided with one of the aforementioned heating plate assemblies 10, and the heating plate assemblies 10 on the two clamps 21 are arranged opposite each other so that they clamp and heat the hair together when the two clamps 21 are closed. A liquid supply device 30 can be provided to connect the liquid inlet 153 of the two heating plate assemblies 10, or a liquid supply device 30 can be provided for each heating plate assembly 10.

[0049] The liquid supply device 30 has various specific structures. For example, in some embodiments, the liquid supply device 30 includes a water tank 31 and a water pump. The water pump is connected between the water tank 31 and the inlet 153 to inject water from the water tank 31 into the first cavity 141. In other embodiments, the liquid supply device 30 includes a water tank 31 and an elastic airbag 32. The elastic airbag 32 has an air inlet and an air outlet. A check valve is provided at the air inlet, and the air outlet is connected to the water tank 31. Part of the elastic airbag 32 extends to the outside of the clamp 21. The user can inject the gas in the elastic airbag 32 into the water tank 31 by pressing the elastic airbag 32, thereby squeezing the water in the water tank 31 into the first cavity 141. In another embodiment, the liquid supply device 30 includes a water tank 31 and an elastic airbag 32. The elastic airbag 32 has an air inlet and an air outlet. A check valve is provided at the air inlet, and the air outlet is connected to the water tank 31. Part of the elastic airbag 32 is located inside the clamping plate 21. A protrusion 22 is provided on the inner side of the other clamping plate 21 corresponding to the position of the elastic airbag 32. When the two clamping plates 21 are closed, the protrusion 22 squeezes the elastic airbag 32 to inject the gas in the elastic airbag 32 into the water tank 31, thereby squeezing the water in the water tank 31 into the first cavity 141.

[0050] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using 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 heat plate assembly, characterized by, The heating plate assembly includes a heating element, a hair-curling plate, a heat-conducting plate, a first cavity, and a second cavity; The heating element is disposed between the hair-curling plate and the heat-conducting plate. The heat-conducting plate forms part of the cavity wall of the first cavity and part of the cavity wall of the second cavity. A partition is provided between the first cavity and the second cavity, and the partition is provided with a vent connecting the first cavity and the second cavity. The first cavity is provided with a liquid inlet, and the second cavity is provided with a steam outlet, which is located on the side of the hair-curling plate away from the heating element.

2. The heat plate assembly of claim 1, wherein, The first cavity is provided with a first water-absorbing element, which is attached to the heat-conducting plate.

3. The heat plate assembly of claim 1, wherein, The hair-curling plate and the heat-conducting plate are integrally formed and have an installation cavity with both ends through it. The heating element is disposed in the installation cavity.

4. The heating plate assembly as described in claim 3, characterized in that, The heating plate assembly also has a sealing component, which is sleeved around the periphery of the mounting cavity and covers the openings at both ends of the mounting cavity. The sealing component has a wire passage hole corresponding to one end opening of the mounting cavity.

5. The heating plate assembly as described in claim 4, characterized in that, The heat-conducting plate has an extension that extends out from the long side of the hair-curling plate. The steam outlet is located on the extension. The sealing member covers the extension and has an outlet corresponding to the position of the steam outlet.

6. The heating plate assembly as described in claim 5, characterized in that, The steam outlet is a long strip extending along the length of the hair curling plate, and there are multiple outlets that are spaced apart along the length of the hair curling plate.

7. The heating plate assembly as described in claim 1, characterized in that, The heat-conducting plate has an extension that extends out relative to the long side of the hair-curling plate, and the steam outlet is located in the extension. And / or, a first check valve is provided at the liquid inlet.

8. The heating plate assembly as claimed in claim 1, characterized in that, The heating plate assembly also has a mounting base, which has a first groove and a second groove. The side of the heat-conducting plate opposite to the heating element covers the first groove and the second groove to form the first cavity at the first groove and the second cavity at the second groove.

9. The heating plate assembly as described in claim 8, characterized in that, The heating plate assembly also has a sealing element, which has a first annular portion and a second annular portion connected as one piece. The first annular portion is disposed around the opening of the first groove, and the second annular portion is disposed around the opening of the second groove.

10. A hair straightener, characterized in that, The device includes a housing, a liquid supply device, and at least one heating plate assembly as described in any one of claims 1 to 9, wherein the housing includes two clamping plates hinged to each other, the heating plate assembly is disposed on the clamping plates, and the liquid supply device is in communication with the liquid inlet of the heating plate assembly.

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