Ceramic heating sheet capable of uniformly heating

Abstract

The utility model provides a ceramic heating sheet capable of uniformly heating. The ceramic heating sheet comprises an upper ceramic sheet, a plurality of heating bodies and a lower ceramic sheet, the multiple heating bodies are arranged in a matrix mode, and the interval between the inner sides of the matrix arrangement is larger than the interval between the outer sides of the matrix arrangement. Each heating body comprises a positive electrode, a first heating resistor, a second heating resistor and a negative electrode, the two ends of the first heating resistor are connected with the positive electrode and the negative electrode respectively, and the two ends of the second heating resistor are connected with the positive electrode and the negative electrode respectively; the heating bodies are connected in series or in parallel according to set voltage and power; and moreover, the heating speed is high, and the use of a user is facilitated.

Description

Technical Field

[0001] The utility model relates to a ceramic heating sheet with uniform heating. Background Art

[0002] The ceramic heating sheet is a new generation of high-efficiency and green environmental protection heating device, which is widely used in various heating products such as industrial and agricultural technologies, communications, medical treatment, and daily life, and is used to provide heat sources for heating components or directly used as heating components.

[0003] At present, the ceramic heating sheets on the domestic and foreign markets are flat structures composed of ceramic sheets, heating resistors, and leads. The heating resistors are located between two ceramic sheets, and the leads are electrically connected to the heating resistors. Limited by the heating power, the heating area of each heating sheet is small, and the heating area is concentrated in the middle of the ceramic heating sheet, which makes the volume of the ceramic heating sheet large but the heating area small; and due to being concentrated in the middle of the ceramic heating sheet for a long time, the service life of the ceramic heating sheet is further reduced. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a ceramic heating sheet with uniform heating, which has uniform heating, fast heating rate, and is convenient for users to use.

[0005] The utility model is realized as follows: a ceramic heating sheet with uniform heating, including an upper ceramic sheet, a plurality of heating bodies, and a lower ceramic sheet; the plurality of heating bodies are all arranged between the upper ceramic sheet and the lower ceramic sheet;

[0006] The plurality of heating bodies are arranged in a matrix, and the interval inside the matrix arrangement is larger than the interval outside;

[0007] Each heating body includes a positive electrode, a first heating resistor, a second heating resistor, and a negative electrode. The two ends of the first heating resistor are respectively connected to the positive electrode and the negative electrode, and the two ends of the second heating resistor are respectively connected to the positive electrode and the negative electrode;

[0008] The heating bodies are connected in series or in parallel according to the set voltage and power.

[0009] Further, the first heating resistor includes a first arc resistor, a second arc resistor, and a third arc resistor. One end of the first arc resistor, the second arc resistor, and one end of the third arc resistor are connected in sequence. The other end of the first arc resistor is connected to the positive electrode, and the other end of the third arc resistor is connected to the negative electrode.

[0010] Further, there is at least one second arc resistor.

[0011] Further, the second heating resistor includes a fourth arc-shaped resistor, a fifth arc-shaped resistor, and a sixth arc-shaped resistor. One end of the fourth arc-shaped resistor, the fifth arc-shaped resistor, and one end of the sixth arc-shaped resistor are connected in sequence. The other end of the fourth arc-shaped resistor is connected to the positive electrode, and the other end of the sixth arc-shaped resistor is connected to the negative electrode.

[0012] Further, there is at least one fifth arc-shaped resistor.

[0013] Further, the inner interval minus the adjacent outer interval is equal to 1 to 3 mm.

[0014] Further, the upper ceramic sheet, the heating element, and the lower ceramic sheet form a flat plate-like structure or a curved plate-like structure.

[0015] The advantages of the present utility model are as follows: For a ceramic heating sheet with uniform heating of the present utility model, by changing the wiring method of the heating resistor, the ceramic heating sheet has uniform heating and does not concentrate in the middle of the ceramic heating sheet; furthermore, due to uniform heating, the ceramic is not easily damaged, and the service life of the ceramic heating sheet is increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following further describes the present utility model with reference to the accompanying drawings in conjunction with embodiments.

[0017] Figure 1 is a schematic diagram of the matrix arrangement of the heating elements of a ceramic heating sheet with uniform heating of the present utility model.

[0018] Figure 2 is a schematic structural diagram of the heating element of a ceramic heating sheet with uniform heating of the present utility model.

[0019] Figure 3 is a schematic structural diagram of a ceramic heating sheet with uniform heating of the present utility model Figure 1 .

[0020] Figure 4 is a schematic structural diagram of a ceramic heating sheet with uniform heating of the present utility model Figure 2 . DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Please refer to Figures 1 to 4 As shown, a ceramic heating sheet with uniform heating of the present utility model includes an upper ceramic sheet 1, a plurality of heating elements 2, and a lower ceramic sheet 3; a plurality of the heating elements 2 are all arranged between the upper ceramic sheet 1 and the lower ceramic sheet 3;

[0022] A plurality of the heating elements 2 are arranged in a matrix, and the inner interval of the matrix arrangement is greater than the outer interval;

[0023] Each of the heating elements 2 includes a positive electrode 21, a first heating resistor 22, a second heating resistor 23, and a negative electrode 24. Both ends of the first heating resistor 22 are respectively connected to the positive electrode 21 and the negative electrode 24, and both ends of the second heating resistor 23 are respectively connected to the positive electrode 21 and the negative electrode 24;

[0024] The heating elements 2 are connected in series or in parallel according to the set voltage and power. For example, if the power of the heating element 2 is 5w and the voltage is 5V, and at this time the rated power of the ceramic heating sheet is required to be 100W and the rated voltage is 50V, then 20 heating elements 2 are needed. Divide the 20 heating elements 2 into two groups, and then connect 10 heating elements 2 in series and then in parallel;

[0025] A single heating element 2 is very small and heats up very quickly, and can quickly reach the set temperature; through the cooperation between multiple heating elements 2, the heating speed of the entire ceramic heating sheet is rapid, and according to the above matrix arrangement, the heat of the entire ceramic heating sheet will not be concentrated in the middle, and the entire ceramic heating sheet can heat evenly.

[0026] In this embodiment, preferably, the first heating resistor 22 includes a first arc-shaped resistor 221, a second arc-shaped resistor 222, and a third arc-shaped resistor 223. One end of the first arc-shaped resistor, the second arc-shaped resistor, and one end of the third arc-shaped resistor are connected in sequence. The other end of the first arc-shaped resistor is connected to the positive electrode, and the other end of the third arc-shaped resistor is connected to the negative electrode.

[0027] In this embodiment, preferably, there is at least one second arc-shaped resistor.

[0028] In this embodiment, preferably, the second heating resistor 23 includes a fourth arc-shaped resistor 231, a fifth arc-shaped resistor 232, and a sixth arc-shaped resistor 233. One end of the fourth arc-shaped resistor, the fifth arc-shaped resistor, and one end of the sixth arc-shaped resistor are connected in sequence. The other end of the fourth arc-shaped resistor is connected to the positive electrode, and the other end of the sixth arc-shaped resistor is connected to the negative electrode.

[0029] In this embodiment, preferably, there is at least one fifth arc-shaped resistor.

[0030] In this embodiment, preferably, the inner interval minus the adjacent outer interval is equal to 1 to 3 mm.

[0031] As Figure 3 shown, the upper ceramic sheet, the heating element, and the lower ceramic sheet form a flat plate-like structure.

[0032] As Figure 4 shown, the upper ceramic sheet, the heating element, and the lower ceramic sheet form a curved plate-like structure.

[0033] A ceramic heating sheet with uniform heat generation, comprising a plurality of ceramic heating sheets 1 and a heat conducting sheet 2; the plurality of ceramic heating sheets 1 are arranged in a matrix and fixed to the heat conducting sheet 2;

[0034] The inner intervals L1 and L3 of the matrix arrangement are greater than the outer intervals L2 and L4, that is, L1 > L2, L3 > L4; it can also be set that the difference between L1 and L2 is 1 mm, and the difference between L3 and L4 is 1 mm; and so on for the arrangement;

[0035] The ceramic heating sheets 1 are connected in series or in parallel according to the set voltage and power; for example, the power of the ceramic heating sheet 1 is 5 w and the voltage is 5 V. At this time, a power of 100 W and a rated voltage of 50 V are required, so 20 ceramic heating sheets 1 are needed. Divide the 20 into two groups, and then connect 10 ceramic heating sheets 1 in parallel and then in series;

[0036] When the ceramic heating sheet 1 is rectangular, both the length and width are less than or equal to 1 cm;

[0037] When the ceramic heating sheet 1 is circular, its diameter is less than or equal to 1 cm; the ceramic heating sheet 1 has a small volume, which is convenient for users to have sufficient space during the arrangement; and through the above settings, when the heat conducting sheet 2 generates heat, the heat generation temperatures of each part are basically the same.

[0038] In this embodiment, preferably, a plurality of card slots 21 are provided on the heat conducting sheet 2, the ceramic heating sheets 1 are arranged in the card slots 21, and the card slots 21 correspond to the ceramic heating sheets 1 one by one; by nesting the ceramic heating sheets 1 in the card slots 21, high-temperature resistant glue can be used for fixing, so that most of the heat of the ceramic heating sheets 1 is transferred to the heat conducting sheet, enabling the entire heat conducting sheet 21 to quickly heat up and meet the usage requirements.

[0039] In this embodiment, preferably, as Figure 3 and 4 shown, the ceramic heating sheet 1 includes an upper ceramic sheet 11, a heating body 12, and a lower ceramic sheet 13; the upper ceramic sheet 11, the heating body 12, and the lower ceramic sheet 13 are connected in sequence; the heating body 12 includes a positive electrode 121, a first heating resistor 122, a second heating resistor 123, and a negative electrode 124. The first heating resistor 122 includes a first arc-shaped resistor 1221, a second arc-shaped resistor 1222, and a third arc-shaped resistor 1223. One end of the first arc-shaped resistor 1221, the second arc-shaped resistor 1222, and one end of the third arc-shaped resistor 1223 are connected in sequence. The other end of the first arc-shaped resistor 1221 is connected to the positive electrode 121, and the other end of the third arc-shaped resistor 1223 is connected to the negative electrode 124;

[0040] The second heating resistor 123 includes a fourth arc-shaped resistor 1231, a fifth arc-shaped resistor 1232, and a sixth arc-shaped resistor 1233. One end of the fourth arc-shaped resistor 1231, the fifth arc-shaped resistor 1232, and one end of the sixth arc-shaped resistor 1233 are connected in sequence. The other end of the fourth arc-shaped resistor 1232 is connected to the positive electrode 121, and the other end of the sixth arc-shaped resistor 1233 is connected to the negative electrode 124. Through the above arrangement, the heating element 12 looks circular and has three layers of heating, so that the ceramic heating sheet 1 has high thermal efficiency, high heating temperature, and rapid temperature rise.

[0041] In this embodiment, preferably, the heat conducting sheet 2 is an aluminum plate or a ceramic plate. The heat conducting sheet 2 can be fixed to a hair curler or a hair straightener to provide heat. Because it heats up quickly and evenly, the effects of the hair curler or the hair straightener are greatly enhanced, which is convenient for users to use and reduces damage to the user's hair.

[0042] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0043] Although the specific embodiments of the present invention have been described above, those skilled in the art of this technology should understand that the specific embodiments we described are only illustrative, rather than used to limit the scope of the present invention. Equivalent modifications and variations made by those skilled in the art in accordance with the spirit of the present invention should be covered by the scope protected by the claims of the present invention.

Claims

1. A ceramic heating sheet with uniform heat generation, characterized in that: It includes an upper ceramic sheet, a plurality of heating elements, and a lower ceramic sheet; the plurality of heating elements are all arranged between the upper ceramic sheet and the lower ceramic sheet; the plurality of heating elements are arranged in a matrix, and the inner interval of the matrix arrangement is greater than the outer interval; each heating element includes a positive electrode, a first heating resistor, a second heating resistor, and a negative electrode. Both ends of the first heating resistor are respectively connected to the positive electrode and the negative electrode, and both ends of the second heating resistor are respectively connected to the positive electrode and the negative electrode; the heating elements are connected in series or in parallel according to the set voltage and power.

2. The ceramic heating sheet with uniform heat generation according to claim 1, characterized in that: the first heating resistor includes a first arc-shaped resistor, a second arc-shaped resistor, and a third arc-shaped resistor. One end of the first arc-shaped resistor, the second arc-shaped resistor, and one end of the third arc-shaped resistor are connected in sequence. The other end of the first arc-shaped resistor is connected to the positive electrode, and the other end of the third arc-shaped resistor is connected to the negative electrode.

3. The ceramic heating sheet with uniform heat generation according to claim 2, wherein: there is at least one second arc-shaped resistor.

4. The ceramic heating sheet with uniform heat generation according to claim 1, wherein: the second heating resistor includes a fourth arc-shaped resistor, a fifth arc-shaped resistor, and a sixth arc-shaped resistor. One end of the fourth arc-shaped resistor, the fifth arc-shaped resistor, and one end of the sixth arc-shaped resistor are connected in sequence. The other end of the fourth arc-shaped resistor is connected to the positive electrode, and the other end of the sixth arc-shaped resistor is connected to the negative electrode.

5. The ceramic heating sheet with uniform heat generation according to claim 4, wherein: there is at least one fifth arc-shaped resistor.

6. The ceramic heating sheet with uniform heat generation according to claim 1, wherein: the inner interval minus the adjacent outer interval is equal to 1 to 3 mm.

7. The ceramic heating sheet with uniform heat generation according to claim 1, wherein: the upper ceramic sheet, the heating elements, and the lower ceramic sheet form a flat plate-like structure or a curved plate-like structure.

Images