阅读说明：本技术 一种用于冰箱除霜除冰的面状加热装置 (Planar heating device for defrosting and deicing of refrigerator ) 是由 李辰宇 邓乐乐 于 2020-06-18 设计创作，主要内容包括：本发明公开了一种用于冰箱除霜除冰的加热装置,涉及冰箱冰柜等制冷设备技术领域,所述冰箱除霜除冰的加热装置包括发热本体、温度传感器、控制电路、绝缘固定外壳、绝缘导热层。所述发热本体由一定规格面积的微晶石墨纤维布,所述微晶石墨纤维布两侧有导电电极,所述导电电极有连接电极的导线组成,所述导线与控制线连接发热本体以及温度传感器；绝缘导热层、发热本体、温度传感器、绝缘固定外壳依次设置。本发明通过导线向所述微晶石墨纤维布供电,进而发热,并最后通过绝缘导热层来使冰箱蒸发器升温而达到化霜效果,此加热装置具有热转化率高,加热接触面积大,加热时间持续短,且绝缘导热层的温度均匀性高,能有效的降低冰箱能耗,提高面加热器的加热效率。(The invention discloses a heating device for defrosting and deicing of a refrigerator, and relates to the technical field of refrigeration equipment such as refrigerators and freezers. The heating body is made of microcrystalline graphite fiber cloth with a certain specification area, conductive electrodes are arranged on two sides of the microcrystalline graphite fiber cloth, the conductive electrodes are composed of leads connected with the electrodes, and the leads are connected with a control line to connect the heating body and the temperature sensor; insulating heat-conducting layer, the body that generates heat, temperature sensor, insulating fixed shell set gradually. The invention supplies power to the microcrystalline graphite fiber cloth through the wires to generate heat, and finally heats the refrigerator evaporator through the insulating heat conduction layer to achieve the defrosting effect.)

1. A face-shaped heating device for defrosting and deicing of a refrigerator is characterized in that: the planar heating device is sequentially provided with an insulating fixed shell (5), a heating body (4), a temperature sensor (3) and an insulating heat conducting layer (2), the heating body (4) is composed of a conductive electrode (401), microcrystalline graphite fiber cloth (402) and a lead (403), conductive electrodes (401) are arranged on two sides of the surface edge of the heating body (4), and both ends of the conductive electrode (401) are respectively connected with a lead (403), the insulating heat transfer layer (2) is tightly attached with the heating body (4), the heating body (4) is connected with a control circuit through a lead (403), the heating body (4), the temperature sensor (3) and the insulating heat-conducting layer (2) are sequentially arranged in the insulating fixed shell (5), and the planar heating device and the refrigerator evaporator are fixedly arranged in the refrigerator through an insulating fixed shell (5).

2. The planar heating device for defrosting and deicing of a refrigerator according to claim 1, wherein the insulating and heat conducting layer (2) is a high temperature resistant insulating material which can include but is not limited to mica sheet, microcrystalline glass, insulating ceramic sheet, heat conducting insulating silica gel sheet, and the like.

3. The planar heating device for defrosting and deicing of a refrigerator as claimed in claim 1, wherein said temperature sensor (3) is fixed between the insulating heat-conducting layer (2) and the heat-generating body (4) and is used for detecting the temperature of the heat-generating body, and said temperature sensor is not less than one.

4. The planar heating device for defrosting and deicing of a refrigerator according to claim 1, wherein the conductive electrodes (401) are conductive silver paste, the conductive silver paste is printed on two sides of the microcrystalline graphite fiber cloth in a printing mode, and the number of the electrodes is not less than 2.

5. The planar heating device for defrosting and deicing of a refrigerator as claimed in claim 1, wherein said insulating fixed housing (5) is made of a high flame retardant and heat resistant plastic, and said insulating fixed housing (5) is provided with wire grooves for mounting fixed wires (403).

6. The microcrystalline graphite fiber cloth (402) in the heat-generating body according to claim 1, wherein the heat-generating unit is formed of one or more pieces.

Technical Field

The invention belongs to the technical field of refrigerators, and particularly relates to a planar heating device for defrosting and deicing of a refrigerator.

Background

The refrigerator is a refrigeration device capable of keeping constant low temperature, is an electrical appliance for storing food or other articles at low temperature, and is widely applied to the fields of life and industry. At present, most heaters adopted by a household air-cooled refrigerator for defrosting and deicing are steel pipe or quartz pipe heaters, and the steel pipe or quartz pipe heaters have the problems of small heating area, long working time, high energy consumption, low heating efficiency, poor temperature uniformity (over-high local temperature), difficulty in controlling the highest heating temperature and the like when the steel pipe or quartz pipe heaters are used for defrosting inside the refrigerator. The fiber cloth (patent of invention, patent number 201910271815.6) is a nonmetal heating material with the characteristics of light weight, thin thickness, high electrothermal conversion rate of 99%, strong hydrophobic property, high heating speed, uniform heating, strong weather resistance, high temperature resistance, oxidation resistance and the like.

Therefore, a planar heating device for defrosting and deicing a refrigerator is studied to improve defrosting and deicing efficiency in the refrigerator.

Disclosure of Invention

The invention aims to provide a planar heating device for defrosting and deicing of a refrigerator, which supplies power to a conductive electrode through a lead so as to heat a heating body, and finally heats an evaporator of the refrigerator through an insulating heat-conducting layer so as to achieve the defrosting effect of the refrigerator, thereby solving the problems of small heating area, long heating time, high energy consumption, low heating efficiency, poor temperature uniformity and difficulty in controlling the highest heating temperature of the conventional steel pipe heater.

In order to solve the technical problems, the invention is realized by the following technical scheme.

A planar heating device for defrosting and deicing of a refrigerator is sequentially provided with an insulating fixed shell, a heating body, a temperature sensor and an insulating heat conduction layer; the heating body consists of a conductive electrode, microcrystalline graphite fiber cloth and a lead; conductive electrodes are arranged on two sides of the edge of the surface of the heating body; and both ends of the conductive electrode are respectively connected with a lead; the insulating heat transfer layer is tightly attached to the heating body; the heating body is connected with the control circuit through a lead; a temperature sensor, a heating body and an insulating heat conduction layer are sequentially arranged in the insulating fixed shell; and the surface heater and the refrigerator evaporator are fixedly arranged in the refrigerator through an insulating fixed shell.

Further, the insulating and heat conducting layer is made of heat-resistant and temperature-conducting insulating materials such as but not limited to mica sheets, microcrystalline glass, insulating ceramic sheets, heat-conducting and insulating silica gel sheets and the like.

Further, the heating layer is microcrystalline graphite carbon fiber cloth.

Further, the electrode plate is a silver paste electrode plate.

Further, the insulating fixed shell is made of high-flame-retardant heat-resistant plastic.

Furthermore, a wire groove is formed on the insulating fixing layer.

Further, the wire groove can be provided with a fixed wire.

The present invention has the following advantageous effects.

The invention supplies power to the microcrystalline graphite fiber cloth through the wires, so that the heating body generates heat, and finally the refrigerator achieves the defrosting and deicing effects through the insulating heat conduction layer.

According to the invention, the microcrystalline graphite fiber cloth is used as the heating body in the heating layer, and compared with a steel tube or quartz tube heater, the planar heater is used for planar global heating, so that the working temperature for defrosting and deicing is relatively low, the highest heating temperature of the planar heater is easier to control, the safety of the refrigerator is improved, and the safety of people is guaranteed.

Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without inventive labor.

Fig. 1 is a schematic structural diagram of a planar heating device for defrosting and deicing a refrigerator according to the present invention.

In the drawings, the components represented by the respective reference numerals are listed below.

1-refrigerator evaporator, 2-insulating heat conduction layer, 3-temperature sensor, 401-conducting electrode, 402-microcrystalline graphite fiber cloth, 403-wire and 5-insulating fixed shell.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "disposed," "open," "down," "upper surface," "edge," "inner," "end," and the like are used in an orientation or positional relationship that is merely for convenience in describing and simplifying the description, and do not indicate or imply that the referenced components or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be considered as limiting the present invention.

As shown in fig. 1, the invention is a planar heating device for defrosting and deicing of a refrigerator, which is sequentially provided with an insulating fixed shell 5, a heating body 4, a temperature sensor 3 and an insulating heat conduction layer 2 from bottom to top; the insulating heat conduction layer 2 is tightly attached to the heating body 4; the insulating heat conduction layer 2 can effectively transfer and dissipate heat generated by the heating body 4, and the defrosting and deicing efficiency in the refrigerator is improved.