PTC stainless steel heating pipe

PTC stainless steel heating pipe

11) National patent, ZL 2010 2 01356626.0, high power density water heater.

National patent, ZL 201320630141.2, surround PTC heating tube.

National patent, ZL 2011 2022 0811.4, anti-corrosion PTC heating tube.

National patent, ZL 2011 2012 6016.9, Used for special high security, there are 2 layers of insulator and 2 layers of metal protective layer. That can prevent the electricity leakage on the heater caused by breakdown of PTC ceramic.

National patent, ZL 201520425957.0, PTC heating element used in electroplate tank.

National patent, ZL 201520103573.7, PTC heating element used in three phases.

National patent, ZL 201520103574.1 PTC heating element applied with multi voltage.

Water heating element

1)     Transflux type. Water flows in the hole of the heating element and the water could be heated by the heating element.

2) Immerging type. The heating element is immerged in a water container, and the water could be heated by the heating element.

3) Underside type. The heating element can be put under a water container, and the water could be heated by the heating element.

4) Surrounding pipe type. The heating element can be surrounded out of the metal water pipe and the water in pipe could be heated.

The above types can be consist of materials below:

1) Aluminium shell or pipe, it is not good in resistance to corrosion. Anti-corrosion coating could be betterin resistance to corrosion. 
2) Brass or copper shell or pipe, it is good in resistance to corrosion. But it costs higher. 
3) Ceramic shell, it`s good in resistance to corrosion. But its heating power could not be very large. 
4) Stainless steel shell or pipe, it`s very excellence for preventing corrosion, and meets food safe standard. But it costs higher and has bigger bulk.

5) Titanium shell, it`s very good in corrosion resistance, but the cost is quite high.

3. Some samples of uses.

PTC water heater could be used for shower, footbath, washing hand, vegetable and dish, drink warmer and boiler, fermenter, tea warmer, coffee wamer, milk warmer, vapor generator, sauna bath.

They could be used in heating diesel oil, gasoline or other liquid. Using PTC as a heating element could prevent the oil burning, it`s safer.

4. Notice in appliance.

PTC as a heating element, it fits for high safety, long life-time, slap-up product. In some situations, it`s low cost and convenient.

The electric power of PTC water heater changes with the temperature of water. The higher is the temperature of water, the smaller is the power.

Using higher switch temperature PTC can get higher power, 220~270Cswitch temperature PTC is selected usually. But if the switch temperature is too high, the reliable will reduce.

4. Current products.

Some immerging heating elements.

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