CN217285407U

CN217285407U - Three-dimensional heat generation electric heating inner container

Info

Publication number: CN217285407U
Application number: CN202121376640.4U
Authority: CN
Inventors: 龚圣捷; 邱炻
Original assignee: Shanghai Jiaotong University
Current assignee: Shanghai Jiaotong University
Priority date: 2021-06-21
Filing date: 2021-06-21
Publication date: 2022-08-26
Anticipated expiration: 2031-06-21

Abstract

A three-dimensional heat generation electric heating liner comprises: the inner bag that transparent glass made and set up in the heating material strip of inner bag lateral surface and the heliciform heating material piece of inner bag outside bottom, wherein: the heating material is compounded to the outer surface of the inner container and forms a uniform heating layer for heating; the utility model realizes three-dimensional heating and direct and uniform heating of the non-metal inner container and the metal inner container, greatly improves the heating power under the unit inner container volume condition, can reach more than 30 times at most, and also improves the heating efficiency; the direct heating of the non-metal inner container is realized, the heating of the integrated glass inner container and the ceramic inner container is realized, and the design promotion space of small household appliances is expanded; the graphite sheet is used as a connecting material for connecting the electric heating sheet and the electrode, so that the electrode burning phenomenon caused by the rejection of the connection of the carbon material and the metal electrode anisotropic material is avoided, and the reliability and the durability of the heating liner component are improved.

Description

Three-dimensional heat generation electric heating inner container

Technical Field

The utility model relates to a technology in the field of daily necessities, in particular to a three-dimensional heat generation electric heating inner container.

Background

At present, in the field of household appliances, particularly in the field of small household appliances for water heating, food cooking and the like, metal resistance wires are mainly adopted as heating materials to be manufactured into metal electric heating tubes for directly heating liquid, or the metal electric heating tubes are cast in an aluminum block and welded on a heating plate for heating a chassis.

The metal resistance wire technology has the advantages of mature process, low cost and the like, and has a leading position in the existing electric heating products, but also has the outstanding defects of low heating efficiency, uneven heating, short service life and the like. Furthermore, this technique cannot be used to uniformly heat complex topographical structures. In summary, the existing electrical heating technology limits the electrical heating power of the inner container per unit capacity, and on the other hand, because the inner container is difficult to be uniformly heated, the function and quality of the small household electrical appliance are greatly affected.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the aforesaid to prior art exists is not enough, provides a three-dimensional electrical heating inner bag that generates heat, and is applicable in various different materials, different appearance structure, and high-power efficient heating container inner bag can be used to all present little household electrical appliances products, for example: the electric heating cup, the health preserving book, the electric cooker, the electric water heater and the like can realize the upgrading and updating of the prior small household appliances, greatly improve the product quality and expand the product functions.

The utility model discloses a realize through following technical scheme:

the utility model discloses a: the inner bag that transparent glass made and set up in the heating material strip of inner bag lateral surface and the heliciform heating material piece of inner bag outside bottom, wherein: the heating material is compounded to the outer surface of the inner container and forms a uniform heating layer for heating.

The heating material comprises graphene, a graphite flake, graphite slurry and carbon fibers, and an organic heat-conducting adhesive layer or an inorganic heat-conducting adhesive layer for compounding is arranged between the heating material and the outer side of the liner.

The inner bag specifically be high temperature resistance nonmetal or metal material's container, wherein: the non-metallic material is quartz glass, high borosilicate glass, various ceramic materials, and the like.

When the metal material is adopted as the inner container, an enamel sintering insulating layer or a ceramic spraying sintering insulating layer is preferably arranged on the outer surface of the inner container.

Because the adopted heating material is soft and has good compositeness, the heating technology is suitable for the inner containers with different shapes, including cylindrical barrels, barrels with elliptic sections and barrels with different cross sections.

Electrodes are arranged at two ends of the heating material, and the electrodes can be made of materials with excellent heat conduction and electric conduction, such as silver colloid electrodes, copper electrodes and the like.

The heating material is provided with a graphite sheet at the connecting position with the electrode so as to avoid the oxidation and poor contact of the electrode.

Polyimide or Teflon high-temperature-resistant insulating tapes are arranged outside the heating material strips and/or the spiral heating material sheets for electric insulation protection.

In the electric insulation protection, preferably, a bimetal isothermal protector is further arranged on the surface of the insulating layer, and when the inner container is over-temperature, the power supply is automatically cut off, so that the safety protection is realized.

The ceramic fiber layer, the glass fiber layer or the mica heat insulation layer are wrapped outside the three-dimensional heat generation electric heating liner, so that heat loss is reduced, and the energy utilization efficiency is improved.

Technical effects

The utility model integrally solves the defects and shortcomings of the prior electric heating wire electric heating technology, such as low unit volume power, low thermal efficiency, weak applicability to various heating requirements, incapability of directly carrying out composite heating on materials such as glass, and the like;

compared with the prior art, the utility model can be used as the core inner container of various water heating, cooking and other appliances. For a non-metal inner container (quartz, high borosilicate glass, ceramic and the like), directly compounding carbon materials (carbon fiber, graphite film, carbon slurry and the like) on the outer wall of the container, and heating; for the metal inner container, the metal outer wall can be insulated firstly, and then the carbon material is compounded on the wall surface to heat the inner container. Compare in present mainstream heating mode, the utility model discloses a three-dimensional heating mode has strong, heating power is high, the heating is even, advantage such as no electromagnetic radiation to being heated the inner bag suitability.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a schematic representation of a strip of graphite sheets;

FIG. 3 is a schematic view of a helical graphite sheet;

in the figure: transparent glass inner bag 1, graphite flake strip 2, heliciform graphite flake 3.

Detailed Description

As shown in fig. 1, the present embodiment relates to a three-dimensional heating electric heating inner container, which includes: the glass-lined water-cooled generator comprises an inner container (or an inner container made of a stainless steel outer wall surface sprayed enamel sintering layer) 1 made of transparent glass, a graphite flake strip 2 arranged on the outer side surface of the inner container and a spiral graphite flake 3 arranged at the bottom of the outer side of the inner container, wherein: the graphite sheet strip 2 and the spiral graphite sheet 3 at the bottom of the outer side of the inner container are fixed on the outer surface of the glass inner container 1 by adopting high-temperature resistant inorganic glue.

The graphite sheet strip 2 is 0.1mm in thickness and 3mm in width, spirally wound on the outer wall surface of the glass liner, and fixed on the outer wall surface of the side surface of the glass liner by adopting high-temperature-resistant inorganic glue.

The spiral graphite sheet 3 is 0.1mm in thickness and 3mm in width.

And two ends of the graphite sheet strip 2 adopt copper sheets as electrodes and are connected with a power supply.

The two ends of the spiral graphite sheet 3 adopt copper sheets as electrodes and are connected with a power supply.

The connection and contact positions are covered with graphite sheets for avoiding electrode oxidation and poor contact.

The graphite strip 2 and the spiral graphite sheet 3 are electrically insulated by being coated with polyimide, and are insulated by being coated with ceramic fiber cotton.

According to different power and heat flow distribution, heating with different thicknesses and different widths can be selectedThe surface heat flow density can reach 0.5MW/m ² As described above. For the inner container with the outer diameter of 65mm and the height of 150mm, under the condition of a composite heating film with half height (75mm) of the bottom surface and the side surface, the maximum electric power can reach 9kW, and compared with the traditional electric heating rod electric heating technology based on the electric heating wire (the power is 300W generally), the power is improved by nearly 30 times.

Compared with the prior art, the device improves the power density of unit volume, thereby improving the heating efficiency and the heating uniformity; the heating device expands the heated objects, is suitable for the direct heating of metal and nonmetal, and is suitable for the direct heating of liners with various special-shaped structures; the reliability of the heating body is improved, and the requirements on the reliability and the service life of industrial products and civil products are met; the heating material in the form of a film adopted in the design has the characteristic of good portability, and the weight of the integrated heating liner is greatly reduced.

The foregoing embodiments may be modified in various ways by those skilled in the art without departing from the spirit and scope of the present invention, which is not limited by the above embodiments but is to be accorded the full scope defined by the appended claims, and all such modifications and variations are within the scope of the invention.

Claims

1. A three-dimensional heating electric heating inner container is characterized by comprising: the inner bag that transparent glass made and set up in the heating material strip of inner bag lateral surface and the heliciform heating material piece of inner bag outside bottom, wherein: the heating material is compounded to the outer surface of the inner container and forms a uniform heating layer for heating;

an organic heat-conducting adhesive layer or an inorganic heat-conducting adhesive layer for compounding is arranged between the heating material and the outer side of the liner.

2. The three-dimensional heat generation electric heating inner container as claimed in claim 1, wherein the outer surface of the inner container is provided with an enamel sintering insulating layer or a ceramic spraying sintering insulating layer.

3. The three-dimensional heat generation electric heating liner as claimed in claim 1, wherein electrodes are arranged at two ends of the heat generation material, and graphite sheets are arranged at the connection positions of the heat generation material and the electrodes for avoiding electrode oxidation and poor contact.

4. The three-dimensional heat generation electric heating inner container as claimed in claim 1, wherein the heat generation material strip and/or the spiral heat generation material sheet is provided with a polyimide or teflon high temperature resistant insulating tape for electric insulation protection.

5. The three-dimensional heat generation electric heating inner container as claimed in claim 2, wherein a bimetal equal temperature protector is arranged on the surface of the insulating layer.

6. The three-dimensional heat generation electric heating inner container as claimed in claim 1, wherein the outer part of the inner container is wrapped with a ceramic fiber layer, a glass fiber layer or a mica heat insulation layer.

7. The three-dimensional heat generation electric heating liner as claimed in claim 1, wherein the heat generation material strip has a thickness of 0.1mm and a width of 3mm, and is spirally wound on the outer wall surface of the glass liner.

8. The three-dimensional heat generation electric heating inner container as claimed in claim 1, wherein the spiral heat generation material sheet has a thickness of 0.1mm and a width of 3 mm.