CN203489570U

CN203489570U - Heater

Info

Publication number: CN203489570U
Application number: CN201320539763.4U
Authority: CN
Inventors: 汪洋; 李国春; 陈启志
Original assignee: ANHUI NINGGUO TIANCHENG ELECTRICAL APPLIANCES Co Ltd
Current assignee: ANHUI ANZE ELECTRIC CO., LTD.
Priority date: 2013-08-30
Filing date: 2013-08-30
Publication date: 2014-03-19
Anticipated expiration: 2023-08-30

Abstract

The utility model discloses a heater which is applied to a refrigerator. The heater comprise a heating element, an insulation layer and a heat conduction layer; the heat conduction layer and the insulation layer are connected with the heating element in a hot pressing mode and distributed on the bilateral sides of the heating element respectively; the heating element comprises glass fiber filaments and heating wires; the heat can be generated by the heating wires when a power supply is applied; the heating wires wind the glass fiber filaments; conductive wires penetrate between the heating wires and the glass fiber filaments along the length direction of the glass fiber filaments from one ends of the glass fiber filaments; the electrical resistivity of the conductive wires is lower than that of the heating wires; the length of the conductive wires is smaller than that of the glass fiber filaments.

Description

A kind of heater

Technical field

The utility model relates to heater technical field, relates in particular to a kind ofly for refrigerator, can be used as the heater of compensating heater or Defrost heater.

Background technology

Cold air in refrigerator is because air contacts and generates with evaporator surface.The medium of the air of evaporimeter periphery and evaporimeter internal flow carries out heat exchange, and the cold air of generation is supplied to refrigerating chamber and the refrigerating chamber of refrigerator inside, makes refrigerator integral body maintain low-temperature condition.In air, contained moisture will form frost on the evaporator surface that maintains relative low temperature state, then further forms ice.If form ice on the surface of above-mentioned evaporimeter, can cause the problems such as heat exchanger effectiveness step-down, so need regularly to carry out the defrost process except the ice on above-mentioned evaporator surface.

Temperature controller in general refrigerator is mounted in refrigerating chamber, winter temperature is low, refrigerator need not start coolingly just can reach refrigerating chamber design temperature, therefore, in the low situation of winter temperature, refrigerator quits work and causes refrigerating chamber cannot reach predetermined temperature, so need to compensate heating, makes temperature controller temperature be detected to raise, refrigerator starts and can freeze, and ensures that refrigerating chamber can frozen food.

In prior art, the heater using in refrigerator has generally used protection pipe box, causes the thickness of heater larger, the space layout while being unfavorable for installing in refrigerator.

Utility model content

In order to solve the technical problem existing in background technology, the utility model proposes a kind of heater, for refrigerator, it is simple in structure, and thickness is little, is beneficial to the space layout when refrigerator is installed.

A kind of heater the utility model proposes, for refrigerator, comprising: calandria, insulating barrier and heat-conducting layer, and it is outer that described insulating barrier is arranged on described calandria, and described heat-conducting layer is connected with described calandria by the mode of hot pressing, wherein:

Described calandria comprises glass fiber, is applied in the heating wire that power supply can produce heat, described heating wire is looped around on described glass fiber, between described heating wire and described glass fiber, along penetrating resistivity lower than the conductive filament of described heating wire resistivity from described glass fiber one end on described glass fiber length direction, described conductive filament length is less than described glass fiber length.

Preferably, the outer, one end that described calandria does not penetrate described conductive filament is provided with protective layer.

Preferably, described protective layer is that dacron thread is closely wound.

Preferably, described heating wire uniform ring is around on described glass fiber.

Preferably, described heat-conducting layer is aluminium foil.

Preferably, described conductive filament is tinned copper wire.

In the utility model, apply after power supply, heating wire produces heat and carries out heat conduction by heat-conducting layer, conductive filament and heating wire contact portion, because the resistivity of conductive filament is lower, cause the heating wire short circuit of joining part, thereby heating wire is divided into Yu Fei hot zone, hot zone, and can, by adjusting the position of conductive filament, adjust the size of hot zone and illegal hot-zone, thereby can control the amount of heat that heating wire produces; By heater strip is looped around on glass fiber, can make full use of high strength and the insulating properties of glass fiber, not produce power waste when promoting service life of whole heater.

Accompanying drawing explanation

Fig. 1 is the structural representation of a kind of heater that the utility model proposes.

The specific embodiment

As shown in Figure 1, Fig. 1 is the structural representation of a kind of heater that the utility model proposes.

With reference to Fig. 1, a kind of heater the utility model proposes, for refrigerator, comprising: calandria, insulating barrier 4 and heat-conducting layer, and insulating barrier 4 is arranged on calandria skin, and heat-conducting layer is connected with calandria by the mode of hot pressing, wherein:

Calandria comprises glass fiber 2, is applied in the heating wire 1 that power supply can produce heat, heating wire 1 is looped around on glass fiber 2, between heating wire 1 and glass fiber 2, along penetrating resistivity lower than the conductive filament 3 of heating wire 1 resistivity from glass fiber 2 one end on glass fiber 2 length directions, conductive filament 3 length are less than glass fiber 2 length.

In the present embodiment, heating wire 1 uniform ring is around on glass fiber 2, thereby heating is more even, and makes the control of caloric value more accurate.

In specific design process; the outer, one end that calandria does not penetrate conductive filament 3 is provided with protective layer 5; protective layer 5 is closely wound for dacron thread; by protective layer 5 is set, can increase the security in heater installation and use process, adopt dacron thread to be closely wound protective layer 5 and can better control protective layer 5 thickness.

In specific design process, heat-conducting layer adopts aluminium foil, and conductive filament 3 adopts tinned copper wire, uses aluminium foil as heat-conducting layer, can ensure that heat transfer efficiency and processing are simple, and heat conductive filament adopts tinned copper wire, and technique is simple, with low cost.

In the utility model, apply after power supply, heating wire 1 produces heat and carries out heat conduction by heat-conducting layer, conductive filament 3 and heating wire 1 contact portion, because the resistivity of conductive filament 3 is lower, cause heating wire 1 short circuit of joining part, thereby heating wire 1 is divided into hot zone 7 and non-hot zone 6, and can adjust the size of hot zone 7 and non-hot zone 6 by adjusting the position of conductive filament 3, thereby can control the amount of heat that heating wire 1 produces; By heater strip being looped around on glass fiber 2, can make full use of high strength and the insulating properties of glass fiber 2, not produce power waste when promoting service life of whole heater.

The above; it is only the preferably specific embodiment of the utility model; but protection domain of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; according to the technical solution of the utility model and utility model design thereof, be equal to replacement or changed, within all should being encompassed in protection domain of the present utility model.

Claims

1. a heater, for refrigerator, is characterized in that, comprising: calandria, insulating barrier (4) and heat-conducting layer, and it is outer that described insulating barrier (4) is arranged on described calandria, and described heat-conducting layer is connected with described calandria by the mode of hot pressing, wherein:

Described calandria comprises glass fiber (2), is applied in the heating wire (1) that power supply can produce heat, described heating wire (1) is looped around on described glass fiber (2), between described heating wire (1) and described glass fiber (2), along penetrating resistivity lower than the conductive filament (3) of described heating wire (1) resistivity from described glass fiber (2) one end on described glass fiber (2) length direction, described conductive filament (3) length is less than described glass fiber (2) length.

2. heater according to claim 1, is characterized in that, the outer, one end that described calandria does not penetrate described conductive filament (3) is provided with protective layer (5).

3. heater according to claim 2, is characterized in that, described protective layer (5) is closely wound for dacron thread.

4. heater according to claim 1, is characterized in that, described heating wire (1) uniform ring is around on described glass fiber (2).

5. heater according to claim 1, is characterized in that, described heat-conducting layer is aluminium foil.

6. heater according to claim 1, is characterized in that, described conductive filament (3) is tinned copper wire.