DESC:FIELD OF INVENTION:

An Automatic Milk Boiler means an Electric gadget which is used for boiling Milk without the spill over and burning at the bottom of the Stainless steel container. The electronically controlled sensor ensures that the Milk will not spill over after boiling and also it will prevent burning the bottom layer of the milk in the SS container.

The invention relates to the electric Automatic Milk Boiler prevents the Spill over of the milk every time. It also prevents the black layer(burning layer) at the bottom of the stainless steel container.

OBJECT OF THE INVENTION:

The first object is to Boil the Milk without any hassle as in the conventional method of Boiling milk spill overs and create the mess in the Kitchen. It happens > 50% of the time in many homes commonly.

DESCRIPTION OF THE INVENTION:

This invention relates to a novel milk boiler and particularly to a device containing the milk to be boiled. The novel milk boiler prevents the boiling over of the milk from the device in which it is boiled and also prevents over heating of device.

The Automatic milk boiler works on single sensor technology. The sensor is positioned on the side of the boiler. The side sensor will detect the boiling of milk and control and / or cut off the power supply. The high sensitivity sensor module will monitor the temperature continuously and give feed back to the MCU to control the power to heater and including the switching off the power.

During heating of milk the side sensor temperature rise will be gradual and the sensor will give corresponding signal to the heater source means to provide a corresponding temperature profile to the heater element. When the milk boils and touches the sensor, the sensor temperature rise will be sudden and at this point the signal is given to heater source means to cut off the heater source means from the heater element and further heating of milk is stopped completely.

DESCRIPTION OF THE DRAWINGS:

Fig. 1 Schematic drawing of Milk Boiler
Fig. 2 Board layouts
Fig. 3 Exploded View of the Milk Boiler
Fig. 4 Block diagram of circuit with main board, connector, heater & sensor of milk boiler

The construction of the novel device is such that it preferably extends somewhat beyond the simple milk boiling vessel. The construction of the device is so simple but so novel and further it is such as to keep the cost of production at a minimum. The invention produces a neat, simple but a safe and efficient device.

The device may be made of metal such as brass, copper, iron sheeting, aluminium and the like and design is not restricted by these metals. In this design there is no risk of milk being thrown out or the device being overheated to burn the milk alongwith.

The advantages and vital claims of the invention are :

In one aspect the invention relates to a milk boiler comprises of :-
a. a milk heating device for containing the milk,
b. a heater source means with plurality of heater elements is operable by a switch which is associated operably with milk heating device.
c. a temperature sensor means sensing the temperature of milk and operably associated with the milk heating device,
d. an electronic signal conditioning control means operatively associated with the temperature sensor means and with the heater source for controlling the temperature of milk contained in the milk heating device by switching on/switching off electronic programmable control means is such that initially when the milk is cold in the container the programme will reduce the power @ 200 watts to pre-heat the milk. This is basically to avoid burning at the bottom and gradually it will increase the power to the maximum of 500 Watts. Also when the milk reaches the temperature of around 80 Deg. C then the unit will control the boiling temperature by switch on and switch off method. Once the milk reaches the boiling temperature and it touches the side sensor the heater will switch off completely. This is done by selectively choosing a plurality of heater elements of the heater source means on the basis of temperature detected by the temperature sensor means,
e. an actuator means converting the electrical signal from the said control means causing heating elements of heater source means to be switched on or switched off by actuating the switch of the heater source means,

In another aspect the milk boiler disclosed above has a novel control means, wherein the control means is adapted to detect the temperature of the milk contained in the device and switch off the heater source means instantly based on the temperature detected by the sensor means.

In another aspect the milk boiler as disclosed above has a novel control means, wherein the control means is adapted to detect the temperature of the device and switch off some of the heater elements of the heater source means based on the temperature detected by the sensor means.

In another aspect the milk boiler as disclosed above has a novel sensor arrangement, wherein the sensor means is mounted on the body of the device.

In another aspect the milk boiler as disclosed above has a novel sensor arrangement, wherein the sensor means is mounted on the side surface wall of the device.

In another aspect the milk boiler as disclosed above has a novel sensor arrangement, wherein the said sensor is connected to the input of the control means, the output of the control means is connected to actuator means and said actuator means adapted to alter the heater rate of the source heater means.

In another aspect the milk boiler as disclosed above has a novel sensor arrangement, wherein the said sensor means is adapted to be a level sensor means for also sensing level of the milk in the heating device and providing an electrical signal to the control means based on the detected temperature of the milk in contact with the first sensor means and instantly switch off the heat to the device.

In another aspect the milk boiler as disclosed above has a novel sensor arrangement, wherein the said temperature sensor means is adapted to be mounted on the device at a height such that milk is in contact with first sensor means only around boiling temperature of the milk.

In another aspect the milk boiler as disclosed above has a novel sensor arrangement, wherein the said first sensor means may be more than one.

Accordingly as per the invention, automatic milk boiler works on temperature and power control technology. The input power to the heater is controlled by PWM (Pulse width modulation) method by detecting the temperature through sensor.

The controller IC with built in temperature module will monitor and give the feedback to control the PWM. This will ensure the correct power is delivered to the heater so that the milk is boiled correctly, but not blackened at the bottom.

During large variation in the input supply AC voltage, the circuit will detect and PWM is adjusted accordingly to ensure correct power to heater.
The unit is switched ON and OFF using a touch key button with a controller. The heater with sensor is connected to base unit circuit through circular contact connector. Dual Red-Green colour LED on the base indicates boiling and end of boiling status.

Moreover the electronic compositions are all segregated with a separate enclosure as base unit. A SS container with the heater will be a separate unit. Furthermore, the arrangement has eliminated the use of relay from the circuit and the heater power is controlled by using PWM, the Pulse Width Modulation method. This ensures that at any input voltage the power will be constant. It works like a voltage regulator.

The boiler as per the invention is not only efficient and simple and ensures the electronics and heater are spaced away from each other. To this end, the system arrangement in accordance with the invention is characterised in essential feature provided and described herein above. However many further embodiments which can be defined and derived from this disclosure is also within the scope of this invention.

As disclosed above the milk boiler in the above aspects discloses the unique boiler which manages the heating of the milk efficiently and also disabling the device when undesired.

In one aspect, the invention relates to a milk boiler comprising of:-

a milk heating device with a container for containing the milk.

There is a heater source means with plurality of heating elements operable by a switch which is associated operably with milk heating device. A power control means will be sensing the input power supply and operably associated with the heater source means to controllably supply within predetermined range of power supply to the heater source means. A temperature sensor means mounted on the side wall of the heating device for sensing the milk by contact and providing a signal indicative thereof and operably associated with the milk heating device. The device also includes an electronic programmable signal conditioning control means operatively associated with the said temperature sensor means and with the heater source means for controlling the temperature supplied to milk contained in the milk heating device by switching on/switching off selectively a first set of plurality of heating elements of the heater source means at the first instance, thereafter switching on/switching off selectively a second set of plurality of heating elements of the heater source means at the second instance, wherein there is a time gap between the first instance and second instance. An actuator means will convert the electrical signal from the said control means causing heating elements of heater source means to be switched on or switched off by actuating the switch of the heater source means.

The novelty and inventive step les in the said temperature sensor means associated with the electronic programmable signal conditioning control means and in that the control means is further adapted to control the temperature of the milk contained in the milk heating device by switching on/switching off through the actuator the heater source means also based on the temperature detected by the said temperature sensor, such that control means is adapted for providing a calculated first heater rate of the heater source means and thereafter after a time gap providing a calculated second heater rate of the heater source and finally switching off the heater source on detecting the predetermined boiling temperature of milk by the said temperature sensor.

In another aspect the control means is adapted to detect the actuation of the device and switch-on some of the heater elements of the heater source means at the first instance.

In another aspect the control means is adapted to detect the actuation of the device and after a lapse of pre-determined time from first instance switch-on additional heater elements of the heater source means.

In another aspect the said temperature sensor means is mounted on the body of the device.

In another aspect the said temperature sensor means is mounted on the side surface of the device.

In another aspect the said temperature sensor means is connected to the input of the control means, the output of the control means is connected to actuator means and said actuator means adapted to switch off supply from the source heater means.

In another aspect the said temperature sensor means is adapted to be mounted on the device at a height such that milk is in contact with said temperature sensor means only around boiling temperature of the milk.

In another aspect the said temperature sensor means is adapted to be a level sensor means for sensing level of the milk in the heating device and providing an electrical signal to the control means based on the detected boiling milk in contact with the said temperature sensor means.

In another aspect the said temperature sensor means may be more than one.

While the invention has been illustrated and described, it is to be understood that it does not limit to the precise construction and instead covers all changes and modifications coming within the scope of the invention. The applicant intends to rely on the provisional specification and drawings filed with provisional specification
,CLAIMS:1. A milk boiler comprising :-

a. a milk heating device with a container for containing the milk,

b. a heater source means with plurality of heating elements operable by a switch which is associated operably with milk heating device.

c. a power control means sensing input power supply and operably associated with the heater source means to controllably supply within predetermined range of power supply to the heater source means.

d. a temperature sensor means mounted on the side wall of the heating device for sensing the milk by contact and providing a signal indicative thereof and operably associated with the milk heating device,

e. an electronic programmable signal conditioning control means operatively associated with the said temperature sensor means and with the heater source means for controlling the temperature supplied to milk contained in the milk heating device by switching on/switching off selectively a first set of plurality of heating elements of the heater source means at the first instance, thereafter switching on/switching off selectively a second set of plurality of heating elements of the heater source means at the second instance, wherein there is a time gap between the first instance and second instance,

f. an actuator means converting the electrical signal from the said control means causing heating elements of heater source means to be switched on or switched off by actuating the switch of the heater source means, and

g. characterized in that it comprises the said temperature sensor means is associated with the electronic programmable signal conditioning control means and in that the control means is further adapted to control the temperature of the milk contained in the milk heating device by switching on/switching off through the actuator the heater source means also based on the temperature detected by the said temperature sensor, such that control means is adapted for providing a calculated first heater rate of the heater source means and thereafter after a time gap providing a calculated second heater rate of the heater source and finally switching off the heater source on detecting the predetermined boiling temperature of milk by the said temperature sensor.

2. The milk boiler as claimed in claim 1, wherein the control means is adapted to detect the actuation of the device and switch-on some of the heater elements of the heater source means at the first instance.

3. The milk boiler as claimed in claim 1 & 2 wherein the control means is adapted to detect the actuation of the device and after a lapse of pre-determined time from first instance switch-on additional heater elements of the heater source means.

4. The milk boiler as claimed in claim 1, wherein the said temperature sensor means is mounted on the body of the device.

5. The milk boiler as claimed in claim 1, wherein the said temperature sensor means is mounted on the side surface of the device.

6. The milk boiler as claimed in claim 1, wherein the said temperature sensor means is connected to the input of the control means, the output of the control means is connected to actuator means and said actuator means adapted to switch off supply from the source heater means.

7. The milk boiler as claimed in claim 1, wherein the said temperature sensor means is adapted to be mounted on the device at a height such that milk is in contact with said temperature sensor means only around boiling temperature of the milk.

8. The milk boiler as claimed in claim 1, wherein the said temperature sensor means is adapted to be a level sensor means for sensing level of the milk in the heating device and providing an electrical signal to the control means based on the detected boiling milk in contact with the said temperature sensor means.

9. The milk boiler as claimed in claim 1, wherein the said temperature sensor means may be more than one.