WO2014025248A1

WO2014025248A1 - Mica warmer heater for electrical cook top

Info

Publication number: WO2014025248A1
Application number: PCT/MY2013/000139
Authority: WO
Inventors: Chon Chin TEE
Original assignee: VBC ELECTRO-HEAT Sdn Bhd
Current assignee: VBC ELECTRO-HEAT Sdn Bhd
Priority date: 2012-08-10
Filing date: 2013-08-06
Publication date: 2014-02-13
Anticipated expiration: 2015-02-10

Description

Mica Warmer Heater for Electrical Cook Top

Field of Invention

The present invention relates a mount in attachment system in combination of pressed fit steel plate for attaching an electrical warmer heater element. The invention particularly applies to provide sufficient controlled heat to warm, melt and simmer effectively. Low temperature limiting prevents burning and scorching, typically found with high performance heating zones. Background of the Invention

For many people, the lack of safety in electrical cook hob which can result in lack of usage of electrical cooking appliances Conventionally, the heating / warming elements are often locked to the vessel by wiring as to securely fix the heating / warming elements. When problem occurs such as the temperature raise up, the power will cut off. It is more on safety purposes.

Disclosure of Invention

The present invention has two thermostats. One is Normally Open (N/O) Bl Metal Switch as an indication that the cooking element reached the required

Temperature and ready for cooking. Meanwhile, the Normally Close Bl (N/C)Metal Switch is to control the temperature. One aspect of the present invention is a Wiring system includes the N/C Bl Metal 1 Switch connected to Jumper Lead as part of the fixture. The connecting terminal 1 switch and the Jumper Lead for live fasten. It engage each other by relative movement to insert the zinc coated plate of wiring lock into the aperture and to It can be rotated up to 30° and the rotation of the plate in a first rotational direction to an installed position. The mounting system used is allowing easy placement and fully interchangeable with all diameter dish warmers.

Another aspect of the present invention in between of the mica plate and metal support plate there is an insulation of mica plate. It is to avoid from current leakage.

Due to more space the wiring harness can pass underneath warmzone and not visible.

The other side of the plate is coiled with ribbon type resistance wire onto the mica surface to transform the heat.

The ribbon heater is fast visual light up, designed for automation ribbon thermal which results in mechanically robust high quality product. It is joined with two mica plate. Brief Description of the Drawings

FIG 1 is a Auto Version (2 switches + Jumper Lead)

FIG 2 is a Standard Version (1 N/O Switch) FIG 3 is a Temperature Controller Version (1 N/C Switch + Jumper Lead)

FIG 4 is a Switchless Version

FIG 5 is Standard Version + Jumper (Rotate 30°) FIG 6 is Standard Version (1 N/O Switch) no Lead (Rotate 30°)

Detailed Description of Drawing and Best Mode for Carrying Out The Invention

In order that the invention may be more readily understood and put into practical effect, a preferred example of the invention will now be described with reference to the accompanying drawings, in which:

FIG 1

Illustrates a preferred example of a warmer heater constructed accordance with the invention. Referring to FIG 1 it can be seen that the mica warmer comprises the spot weld legs in position, jumper lead connected to thermostat. There are 2 switches. One is normally open (N/O) Bl-Metal Switch acts as hot warning indicator and the other one is normally closed (N/C) Bl metal switch which had function as temperature control. The power will cut off whenever the temperature increased. The N/C switch is connected to the jumper lead on top and faston (terminal) at the below portion.

FIG 2

Figure 2 shows the mica support plate is connected to rivets 2, switch 1 , faston 1. the N/O Bl- Metal Switch is for hot warning only.

FIG 3

Figure 2 shows the mica support plate is connected to rivets 2, switch 1 , faston 1. the N/C Bl- Metal Switch is for Temperature Controller where the power will cut off whenever the temperature raised up. Figure 4 illustrates the product with switchless version. This version is to energize heat without N/C or N/O switches. Figure 5 illustrates the standard version which is connected with N/C switch only with jumper lead. It is installed with a rotation of 30°.

Figure 6 illustrates the standard version with only 1 N/O Switch which acts as a hot warning indicator and without Jumper Lead.

Claims

1. Mica heater adapted to a cooking hob, in particular a glass-ceramic cooktop, which comprises

an insulating base that has, on one end, a substantially flat and circular first face upon which at least one heating resistance is fixed, and, on an opposite end, a substantially circular second face, and a metal support cover that houses said insulating base in its interior. The second face of the insulating base is supported directly on a bottom surface of the support cover via a contact surface, the area of said contact surface being smaller than the area of the circle delimited by the second face of the insulating base.

2. The mica warmer heating element adapted to a cooking hob as claimed in claim 1 , wherein said locking system further comprising of washer to fasten and secure said non-threaded conduit steel plate to said mica warmer heater.

3. The mica warmer heater element adapted to cooking hob as claimed in any claim 1 to 2, Rib on the support plate to ensure the flatness and prevent the heat lost to avoid poor heat transformation.

4. The mica warmer heater element adapted to cooking hob as claimed in any claim 1 & 2, Mounting Bracket Enforcement to ensure robust mounting and increase the strength.

5. The mica warmer heater element adapted to cooking hob as claimed in 1 , wherein said warmer heater elements attached to said 1 thermostat by jumper lead.

6. The mica warmer heating element adapted to a cooking hob as claimed in claim 1 , wherein said non-visible spacer washer which was fasten for external secure prevent from current leakage during handling or vibration..

7. The mica warmer heating element adapted to a cooking hob as claimed in claim 1 , 1 switch has a temperature controller version where the power cut off whenever the temperature raised up and the other 1 is hot warning indicator.

8. The mica warmer heating element adapted to a cooking hob as claimed in claim 1 , the ribbon type nickel resistance wire is coiled onto a piece of mica on the underside position of the warmer heater and attached with 2 winding plate.

9. The mica warmer heating element adapted to a cooking hob as claimed in claim 1 , wherein said the holding plate is made of galvanized steel material.