Electric heating plate

Abstract

The utility model discloses an electric heating plate, which comprises a heating plate body and an electric heating tube, the heating plate body comprises two heating areas, and a middle connecting part is arranged between the two heating areas; the electric heating tube penetrates through the two heating areas and the middle connecting part, and the heating power of the electric heating tube in the heating areas is larger than that of the electric heating tube in the middle connecting part. According to the electric heating plate provided by the utility model, the electric heating tube penetrates through the two heating areas and the middle connecting part, so that the electric heating plate has the advantages of high heat conduction performance and low cost; by differentially controlling the heating power of different sections of the electric heating tube, uniform heating of the heating area can be ensured, heating of the middle connecting part is obviously lower than that of the heating area, aging of devices around the middle connecting part is effectively prevented, safety is improved, and the service life is prolonged.

Description

Technical Field

[0001] This utility model relates to a heating plate, and more particularly to an electric heating plate. Background Technology

[0002] Electric heating plates are a common type of electric heating device. The heating elements of existing electric heating plates are generally straight tubes or coils, and they are often used in electric kettles, frying pans, baking pans, and electric griddles.

[0003] With the increasing popularity of robotic vacuum cleaners, there is a growing demand for heating plates for cleaning the mop cloths. Since robotic vacuum cleaner mops consist of two disc-shaped cloths, using two heating coils directly would be bulky, costly, complex to control, and have low performance. Therefore, it is necessary to improve existing technology and provide an electrically heated heating plate. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide an electric heating plate that has the advantages of high thermal conductivity and low cost, can ensure uniform heating, effectively prevent the aging of surrounding devices used with it, and improve safety and service life.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is to provide an electric heating plate, including a heating plate body and an electric heating tube, wherein the heating plate body includes two heating zones, and the two heating zones are connected in the middle; the electric heating tube passes through the two heating zones and the middle connecting part, and the heating power of the electric heating tube in the heating zone is greater than the heating power in the middle connecting part.

[0006] Furthermore, the heating element has a first heating power density in the middle region of the heating zone and a second heating power density in the middle connection portion, wherein the second heating power density is less than or equal to 60% of the first heating power density.

[0007] Furthermore, the heating plate and heating element are integrally formed by die casting or inlay stamping.

[0008] Furthermore, the two heating zones protrude outward to form arc-shaped bosses, and the heating tube is a straight tube. After the straight tube is bent inward in the heating zone, it fits into the inner cavity surface of the arc-shaped bosses.

[0009] Furthermore, the arc-shaped protrusion coincides with the edge of the disc-shaped cloth, so that the entire cloth can be heated, cleaned, and dried with each rotation of the disc-shaped cloth.

[0010] Furthermore, the heating plate body is provided with fixing and mounting holes.

[0011] Furthermore, the heating plate body has electrical component mounting holes for connecting heating electrical components, such as temperature control fuses, temperature sensors, or temperature control switches.

[0012] Furthermore, the temperature sensor is a negative temperature coefficient thermistor.

[0013] Furthermore, the heating plate is made of aluminum.

[0014] Compared with the prior art, the present invention has the following advantages: The electric heating plate provided by the present invention uses an electric heating tube that runs through two heating zones and the middle connecting part, which has the advantages of high heat conduction performance and low cost; by controlling the heating power of different sections of the straight tube differently, it can ensure that the heating zone is heated evenly, and the heating of the middle connecting part is significantly lower than that of the heating zone, which effectively prevents the aging of the components around the middle connecting part and improves safety and service life. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the high-performance heating plate structure according to an embodiment of the present utility model;

[0016] Figure 2 This is a schematic diagram of the front structure of the high-performance heating plate according to an embodiment of the present invention;

[0017] Figure 3 This is a schematic diagram of the back structure of the high-performance heating plate according to an embodiment of the present invention;

[0018] Figure 4 This is a schematic diagram of the side structure of the high-performance heating plate according to an embodiment of the present invention;

[0019] Figure 5 This is a schematic diagram of the irregular straight tube arrangement behind the high-performance heating plate in an embodiment of this utility model. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This is a schematic diagram of the high-performance heating plate structure according to an embodiment of the present utility model; Figure 2 This is a schematic diagram of the front structure of the high-performance heating plate according to an embodiment of the present invention.

[0022] Please see Figure 1 and Figure 2The electric heating plate provided by this utility model uses a single straight or corrugated tube (still a straight tube in the horizontal projection plane) as the heating element instead of two heating elements, achieving uniform heating of both heating zones simultaneously, greatly saving costs and reducing the size of the heating plate. Since the heating element has a high power, especially if the middle part of the two heating zones heats up excessively, it can easily lead to aging of surrounding components over time, affecting the service life of the heating plate. Therefore, this utility model differentiates and controls the heating power of different segments of the heating element to ensure uniform heating in the heating zones, with the heating at the intermediate connection point being significantly lower than that of the heating zones. This achieves high-performance electric heating, effectively preventing aging of components around the intermediate connection point, and improving safety and service life. Specifically, the high-performance heating plate of this utility model embodiment includes a heating plate body and a heating element 1. The heating plate body includes two heating zones 2, with an intermediate connection point 3 between the two heating zones 2. The heating element 1 passes through the two heating zones 2 and the intermediate connection point 3, and the heating power of the heating element 1 in the heating zone 2 is greater than that in the intermediate connection point 3.

[0023] The electric heating plate provided by this utility model has a first heating power density in the middle region of the heating zone 2 and a second heating power density in the middle connecting part 3. The second heating power density is only less than 60% of the first heating power density.

[0024] The electric heating plate provided by this utility model has a heating plate body and an electric heating tube 1 integrally formed by die casting or inlay stamping, and the material can be aluminum, copper, or iron. The two heating zones 2 protrude outwards to form arc-shaped bosses. The electric heating tube 1 is a straight tube, which bends inwards in the heating zone 2 to form a roughly wavy shape, so as to tightly fit the inner cavity surface of the arc-shaped bosses and the intermediate connecting part 3; that is, the electric heating tube 1 bends along the direction of the inner cavity surface, such as... Figure 4 and Figure 5 As shown, but in the horizontal projection plane it is still a straight tube, such as Figure 3 As shown.

[0025] The electric heating plate provided by this utility model has an arc-shaped boss whose radius matches the radius of the disc-shaped cloth; the arc-shaped boss coincides with the edge of the disc-shaped cloth; in this way, the entire cloth can be heated, cleaned, and dried with each rotation of the disc-shaped cloth. While ensuring heating efficiency, it greatly reduces the volume occupied; it can be directly installed into existing robotic vacuum cleaners; in use, a water container can be placed on the arc-shaped boss, and a sealing ring can be installed next to the arc-shaped boss to ensure overall flatness. The heating plate body is provided with fixing mounting holes 4, the shape, position, and number of which can be set according to the installation structure requirements of the robotic vacuum cleaner. In addition, the inner side of the heating plate body is provided with electrical component mounting holes 5 for connecting heating electrical components, such as temperature control fuses, temperature sensors, or temperature control switches. The temperature sensor is preferably a negative temperature coefficient thermistor (NTC thermistor).

[0026] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications and improvements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the claims.

Claims

1. An electric heating plate, comprising a heating plate body and an electric heating tube (1), characterized in that, The heating plate includes two heating zones (2), and the two heating zones (2) are connected by an intermediate connection (3); the electric heating tube (1) passes through the two heating zones (2) and the intermediate connection (3), and the heating power of the electric heating tube (1) in the heating zone (2) is greater than the heating power in the intermediate connection (3).

2. The electric heating plate as described in claim 1, characterized in that, The electric heating tube (1) has a first heating power density in the middle region of the heating zone (2) and a second heating power density in the middle connection part (3), wherein the second heating power density is less than or equal to 60% of the first heating power density.

3. The electric heating plate as described in claim 1, characterized in that, The heating plate and heating element (1) are integrally formed by die casting or inlay stamping.

4. The electric heating plate as described in claim 1, characterized in that, The two heating zones (2) protrude outward to form arc-shaped bosses. The electric heating tube (1) is a straight tube. After the straight tube is bent inward in the heating zone (2), it fits against the inner cavity surface of the arc-shaped boss.

5. The electric heating plate as described in claim 4, characterized in that, The arc-shaped protrusion overlaps with the edge of the disc-shaped cloth, so that the entire cloth can be heated, cleaned and dried with each rotation of the disc-shaped cloth.

6. The electric heating plate as described in claim 1, characterized in that, The heating plate body is provided with a fixing installation hole (4).

7. The electric heating plate as described in claim 1, characterized in that, The heating plate has an electrical component mounting hole (5) on its inner side for connecting a heating electrical component, which is a temperature control fuse, a temperature sensor or a temperature control switch.

8. The electric heating plate as described in claim 7, characterized in that, The temperature sensor is a negative temperature coefficient thermistor.

9. The electric heating plate as described in claim 1, characterized in that, The heating plate is made of aluminum.

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