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PTC heating device

A heating device and heating core technology, applied in the shape of heating elements, ohmic resistance heating parts, ohmic resistance electrodes, etc., can solve problems such as flashover and explosion, reduce the cost of aluminum materials, increase the heat dissipation area, and eliminate functional defects Effect

Pending Publication Date: 2019-01-18
WUXI GUOWEI CERAMIC ELECTRICAL APPLIANCES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0021] Purpose of the invention: The purpose of the present invention is to solve the problem of loosening of the heat-conducting aluminum tube caused by the thermal stress release caused by the instantaneous cold and heat shock during the frequent work of the heating element in the tube of the existing PTC heating device - heating - shutdown cooling The gap between the heating element in the tube and the conductive electrode and the insulating layer, and the contact gap caused by the flashover between the heating element and the electrode sheet, carbonization, and even the local high temperature caused by the long-term flashover, resulting in the melting of the insulating layer A series of major and vicious safety accidents such as surface electrification and leakage, short circuit and breakdown, explosion and burning of flammable plastic indoor units

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A PTC heating device, including a PTC heating core, a heat-conducting aluminum tube and a radiator, the heat-conducting aluminum tube 1 has a heat-conducting plane 8 and a pressing surface 9, and the wall thickness of the heat-conducting plane 8 exceeds the wall thickness of the pressing surface 9 3 times, the radiator includes cooling fins, and the preparation process of the heat-conducting aluminum tube is:

[0042] 1) Melt and soften the aluminum ingot in a special melting furnace;

[0043] 2) Stretching the softened aluminum liquid with a certain strength at the mouth of the furnace to the outside of the furnace through a special mold cavity, the mold cavity is located at the mouth of the melting furnace;

[0044] 3) The softened aluminum liquid is rapidly cooled in the uniform stretching process at room temperature to form an oblong hollow heat-conducting aluminum tube.

[0045] The heat sink 6 is a heat dissipation tooth piece 10 cut by shoveling at the wall thic...

Embodiment 2

[0050] A PTC heating device, including a PTC heating core, a heat-conducting aluminum tube 1 and a radiator, the heat-conducting aluminum tube 1 has a heat-conducting plane 8 and a pressing surface 9, and the wall thickness of the heat-conducting plane 8 exceeds the wall thickness of the pressing surface 9 3 times, the radiator includes cooling fins 10, and the preparation process of the heat-conducting aluminum tube 1 is:

[0051] 1) Melt and soften the aluminum ingot in a special melting furnace;

[0052] 2) Stretching the softened aluminum liquid with a certain strength at the mouth of the furnace to the outside of the furnace through a special mold cavity, the mold cavity is located at the mouth of the melting furnace;

[0053] 3) The softened aluminum liquid is rapidly cooled in the uniform stretching process at room temperature to form an oblong hollow heat-conducting aluminum tube.

[0054] The heat sink 6 is a heat dissipation tooth piece 10 cut by shoveling at the wa...

Embodiment 3

[0059] The utility model relates to an electrical appliance containing a PTC heating device.

[0060] The electrical appliance is at least one selected from air conditioners, heaters, hot air curtains, bathroom heaters, dehumidifiers, air purifiers, clothes dryers, new energy vehicle heaters or defoggers.

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Abstract

The invention discloses a PTC heating device, comprising a PTC heating core, a heat conducting aluminum tube and a heat sink, wherein the heat conducting aluminum tube has a heat conducting plane anda pressing surface, the wall thickness of the heat conducting plane exceeds three times of the wall thickness of the pressing surface, and the heat sink comprises heat dissipating fins. By adopting the design of the invention, the heat dissipation area is increased, the cost of the aluminum material is reduced, and the shape of the heat dissipation fin can reach the effect of storing and accommodating the condensed water droplets caused by the surface temperature difference of the heat exchanger after the machine is turned off, and the effect of eliminating the functional defect caused by thewater droplets blowing into the room with the instantaneous heat exchange air quantity when the machine is turned on again is avoided.

Description

technical field [0001] The invention relates to a heat-sensitive ceramic heater, in particular to a PTC heating device of a heat-conducting aluminum tube with main ribs on the side. Background technique [0002] A bracket for a PTC heat-sensitive ceramic electric heater and a PTC electric heater (publication number CN201174784), including a mounting surface and a supporting surface, a concave cavity for installing and fixing a heating element is arranged on the supporting surface, and the bottom of the concave cavity is also There is an inwardly extending cavity for placing the wires connected to the lead-out terminals of the heating element, and a lead-out hole is provided on the supporting surface at the bottom of the cavity. A through hole for placing the fuse is provided on one side wall of the supporting surface. [0003] Through this technical solution, the fuse can be combined with the bracket to prevent it from being connected to the periphery of the bracket and aff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B3/03H05B3/50H05B3/02
CPCH05B3/02H05B3/03H05B3/50
Inventor 蒋国屏
Owner WUXI GUOWEI CERAMIC ELECTRICAL APPLIANCES CO LTD
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