Claims:CLAIMS:
I / We Claim:
1. A thermo-electric shoes with automatic temperature control, comprising:
a thermoelectric temperature control circuit installed along an inner portion of a shoe portion, wherein said thermoelectric temperature control circuit, comprising:
a thermoelectric module configured to generate cooling and heating effect inside said shoe portion;
a battery unit connected to said thermoelectric module to supply power to said thermoelectric module;
a charging circuit configured to charge said battery unit which in turn connected to a converter that provides suitable electrical energy to said thermoelectric module, and
a thermostat switch configured with a specified range of temperature and thereby cut power supply for said thermoelectric module after crossing said specified range of temperature;
a switching unit placed along an outer portion of said shoe portion and connected to said thermoelectric temperature control circuit configured to switch functionality of said thermoelectric module between cooling function and heating function;
an indicator placed along said outer portion of said shoe portion configured with a pair LED light for indicating said cooling function and said heating function of said thermoelectric module in coordination with the selection of said switching unit, and
a heat sink placed on said thermoelectric module configured with a water block to minimize said heating effect or said cooling effect on one portion of said shoe portion.
2. The thermo-electric shoes with automatic temperature control as recited in claim 1, wherein said thermoelectric temperature control circuit runs through a power switch placed along said outer portion of said shoe portion.
3. The thermo-electric shoes with automatic temperature control as recited in claim 1, wherein said charging circuit also protects said battery unit from over charging and high voltages.
4. The thermo-electric shoes with automatic temperature control as recited in claim 1, wherein said converter is a DC-DC converter that amplifies the voltage from 5 volts to 12 volts to run said thermostat switch.
5. The thermo-electric shoes with automatic temperature control as recited in claim 1, wherein said switching unit is a DTDP switch used to change polarities for said thermoelectric module to generate said heating effect and said cool effect on a side of said shoe portion one at a time.
6. The thermo-electric shoes with automatic temperature control as recited in claim 1, wherein one of said pair of LED is a red LED that represents heat function and the other LED is green LED that represents cooling function of said shoe.
7. The thermo-electric shoes with automatic temperature control as recited in claim 1, wherein said water block comprises of a base part and top part made of materials with high thermal conductivity aluminium and copper, wherein said base part makes contact with said thermoelectric module and a top part contains water inside safely.
8. The thermo-electric shoes with automatic temperature control as recited in claim 1, wherein said thermostat switch comprises of a display unit to display current temperature of said thermoelectric module. , Description:DESCRIPTION:
Field of the invention:
[0001] The present disclosure generally relates to the technical field of a thermoelectric cooler and heater inside a shoe, in specific relates to temperature controlled shoes with a battery powered thermoelectric module which generates heat and cold inside the shoes using peltier effect.
Background of the invention:
[0002] A common strategy to keep a person warm is to wear clothing with thick insulation for retention of body heat. This works well in many cases. However, in very cold environments, the required insulation can become prohibitively bulky and heavy. The problem is particularly pronounced in boots and mittens where thick insulation can hinder walking and reduce dexterity. Another strategy to stay warm is to seal clothing to air circulation. This can hold heat in but also can seal in water vapour. Accumulated water can be uncomfortable and reduce the insulating qualities of the clothing.

[0003] The history of the shoe is as long as the record of human activity itself. In order to protect their feet, leaves were used to wrap around the foot and tied on with twine. A more sturdy form of early foot protection used animal hide to protect the foot in what eventually became the “moccasin”. The sandal is the oldest and most common kind of foot protection and is still the most popular year round footwear worn in countries having warm climates.

[0004] In areas with colder climate and hot climate, a more protective form of footwear is needed to not only protect foot sole against damage, but to insulate from the hot, cold, wet and snow. In the early times, skins and furs were used in cold places. Many solutions to this problem have been proposed and utilized to keep a person's feet warm and dry including thermal insulting materials and waterproof coatings. While these innovations have provided workable solutions to the problem, many people still feel uncomfortable and never seem to be pleased with the temperature of their feet. Older people in particular often feel that their feet are cold regardless of the temperature.

[0005] A heated boot is described in US6041518A, wherein a battery supplies energy to a heating plate in the sole of the boot. The heating plate transfers heat to air circulating through ducts and partitions in the boot to warm the foot. However, this boot has bulky duct structures, lacks thermostatic control, and the heat energy is limited to the battery charge.

[0006] However, existing shoes or boots that are used for keeping a person’s feet warm are either bulky or inconvenient or dangerous, lacks thermostatic control, and heating or cooling is limited to a battery charge. Further, the existing shoes or boots are costly.

[0007] Therefore, there is a need for convenient and low cost thermoelectric shoes that generates heating effect and cooling effect based on requirement of user. There is a need for switch with a better thermostatic control to efficiently control temperature inside the thermoelectric shoes within a range of temperature. There is a need for thermoelectric shoes, in which is suitable for any age group.
Objectives of the invention:
[0008] The primary objective of the invention is to provide thermoelectric shoes with an automatic temperature control circuit for controlling heating function or cooling function of the thermoelectric shoes.

[0009] The other objective of the invention is to provide thermoelectric shoes with a peltier chip placed inside the shoes and is used to create heating and cooling effect inside the shoes using peltier effect.

[0010] Another objective of the invention is to provide thermoelectric shoes with a thermostat switch to control the temperature inside shoes.

[0011] Another objective of the invention is to provide thermoelectric shoes with a thermostat switch that controls a thermoelectric module to operate within a selected range of temperature to create heating and cooling effect inside the shoes.

[0012] Another objective of the invention is to provide an indicator for indicating the state of condition inside thermoelectric shoes.

[0013] Another objective of the invention is to provide thermoelectric shoes with a DPDT switch to change the direction of current flowing into a thermoelectric module to generate a heating effect or a cooling effect on the same side of the thermoelectric module at a time.

[0014] Another objective of the invention is to provide a digital thermostat switch that cuts off the power supply for a thermoelectric module when its temperature exceeds the set maximum temperature.

[0015] Another objective of the invention is to provide a heat sink inside thermoelectric shoes to create heating effect on one side by minimizing cooling effect on the other side and vice versa.

[0016] Yet another objective of the invention is to develop thermoelectric temperature-controlled shoes that are at affordable price and have a long life span.
Summary of the invention:
[0017] The present disclosure proposes thermo-electric shoes with automatic temperature control. The following presents a simplified summary in order to provide a basic understanding of some aspects of the claimed subject matter. This summary is not an extensive overview. It is not intended to identify key/critical elements or to delineate the scope of the claimed subject matter. Its sole purpose is to present some concepts in a simplified form as a prelude to the more detailed description that is presented later.

[0018] In order to overcome the above deficiencies of the prior art, the present disclosure is to solve the technical problem to provide a temperature controlled shoes with a battery powered thermoelectric module which generates heat and cold inside the shoes using peltier effect.

[0019] According to an aspect, the invention provides thermo-electric shoes with automatic temperature control comprises of a thermoelectric temperature control circuit installed along an inner portion of a shoe portion. The thermoelectric temperature control circuit comprises of a thermoelectric module configured to generate cooling and heating effect inside the shoe portion, a battery unit connected to the thermoelectric module, a charging circuit is configured to charge the battery unit, which in turn is connected to a converter that provides suitable electrical energy to the thermoelectric module, and a thermostat switch is configured with a specified range of temperature and cuts off the power supply for the thermoelectric module after crossing the specified range of temperature.

[0020] A switching unit is placed along an outer portion of the shoe portion and connected to the thermoelectric temperature control circuit. The switching unit is configured to switch functionality of the thermoelectric module between cooling function and heating function. An indicator is placed along the outer portion of the shoe portion. The indicator is configured with a pair of LED for indicating the cooling function and the heating function of the thermoelectric module in coordination with the selection of the switching unit. A heat sink is placed on the thermoelectric module. The heat sink is configured with a water block to minimize the heating effect or the cooling effect on one portion of the shoe portion.

[0021] The thermoelectric temperature control circuit runs through a power switch which is placed along the outer portion of the shoe portion. The charging circuit also used to protect the battery unit from over charging and high voltages. The converter is a DC-DC converter that amplifies the voltage from 5 volts to 12 volts to run the thermostat switch. The switching unit is a DTDP switch used to change polarities for the thermoelectric module to generate the heating effect and the cool effect on a side of the shoe portion one at a time. One of the pair of LED is a red LED that represents heat function and the other LED is green LED that represents cooling function of said shoe.

[0022] The water block comprises of a base part and top part made of materials with high thermal conductivity aluminium and copper, the base part makes contact with the thermoelectric module and a top part contains water inside safely. The thermostat switch comprises of a display unit to display current temperature of said thermoelectric module.

[0023] Further, objects and advantages of the present invention will be apparent from a study of the following portion of the specification, the claims, and the attached drawings.
Detailed description of drawings:
[0024] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate an embodiment of the invention, and, together with the description, explain the principles of the invention.

[0025] FIG. 1 illustrates a block diagram of thermo-electric shoes with automatic temperature control in accordance with an exemplary embodiment of the invention.

[0026] FIG. 2 illustrates an exemplary prototype of thermo-electric shoes with automatic temperature control in accordance with an exemplary embodiment of the invention.
Detailed invention disclosure:
[0027] Various embodiments of the present invention will be described in reference to the accompanying drawings. Wherever possible, same or similar reference numerals are used in the drawings and the description to refer to the same or like parts or steps.

[0028] The present disclosure has been made with a view towards solving the problem with the prior art described above, and it is an object of the present invention to provide a temperature controlled shoes with a battery powered thermoelectric module which generates heat and cold inside the shoes using peltier effect.

[0029] According to an exemplary embodiment of the invention, FIG. 1 refers to a block diagram of thermo-electric shoes with automatic temperature control 100. The automatic temperature control 100 comprises of a thermoelectric temperature control circuit 101, installed along an inner portion of a shoe portion. The thermoelectric temperature control circuit 101 comprises of a thermoelectric module 102, battery unit 103 connected to the thermoelectric module 102, a charging circuit 104 connected to the battery unit 103, and a thermostat switch 105. A switching unit 106 along with an indicator 107a and 107b is placed along an outer portion of the shoe portion, and a heat sink 108 is placed on the thermoelectric module 102. A display unit is placed on the thermostat switch 105 to display current temperature of the thermoelectric module 102.

[0030] The thermoelectric module 102 is configured to generate cooling effect and heating effect inside the shoe portion. The battery unit 103 is configured to supply power to the thermoelectric module 102. The charging circuit 104 is configured to charge the battery unit 103, which in turn is connected to a converter that provides a suitable electrical energy to the thermoelectric module 102. The switching unit 106 is configured to switch functionality of the thermoelectric module 102 from cooling function to heating function and vice versa. The thermostat switch 105 is configured with a specified range of temperature and cuts off the power supply for the thermoelectric module 102, in case the thermoelectric module 102 crosses a specific range of temperature.

[0031] The indicator is a pair of LED light 107a and 107b used for indicating the cooling function and the heating function of the thermoelectric module 102. The heat sink 108 is configured with a water block to minimize the heating effect or the cooling effect on one portion of the shoe portion. The water block is configured with a water path for flow of water.

[0032] According to another exemplary embodiment of the invention, the charging circuit 104 act as a protection circuit for the battery unit 103. The battery unit 103 is connected to a buck converter in order to amplify the voltage from 5 volts to 12 volts. The 12 volts voltage is utilized to run the thermostat switch 105. The thermostat switch 105 is configured the specific range of temperature for both the heating function and the cooling function of the thermoelectric module 102, within which the thermoelectric module 102 is allowed to work. In case, the thermoelectric module 102 exceeds maximum temperature point of the specified range, then the thermostat switch 105 terminates the power supply to the thermoelectric module 102. In case, the thermoelectric module 102 falls below the specified temperature, then the thermostat switch 105 supplies power to the thermoelectric module 102.

[0033] The switching unit 106 is a DPDT switch which is used to change the functionality of the thermoelectric module 102 from the heating function to the cooling function and vice- versa. A red LED light indicator 107a is used to represent the heating function of the thermoelectric module 102. A green LED light indicator 107b is used to represent the cooling function of the thermoelectric module 102.

[0034] According to another exemplary embodiment of the invention, an on/off switch 110 is pressed to run the thermoelectric module 102. When the on/off switch 110 is pressed, the battery unit 103 supplies power to the thermoelectric module 102 through the DC-DC convert 109. The charging circuit 104 is used to charge the battery unit 103. The thermoelectric module 102 uses peltier effect also known as seebeck effect to create a heat flux at a junction of two different types of materials. Based on the peltier effect the thermoelectric module 102 generates hot temperature on one side of the shoe portion and cold temperature on the other side of the shoe portion.

[0035] When a DC electric current flows through the thermoelectric module 102, heat is transferred from one side of the shoe portion to the other side and thereby, one side gets cooler while the other gets hotter. The hot side is attached to the water block, so that the hot side remains at ambient temperature, while the cool side goes below the room temperature. In some applications, multiple coolers can be cascaded together for lower temperature.

[0036] The thermostat switch 105 stops the power supply of the thermoelectric module 102, when the temperature of thermoelectric module 102 crosses the specified range of the temperature. The thermostat switch 105 uses an inbuilt NTC sensor to measure the temperature of the thermoelectric module 102 and cuts off the power supply, when the temperature of the thermoelectric module 102 crosses a predefined temperature. The DPDT switch 106 is used to change the polarities of the thermoelectric module 105. Due to the change of the polarities, the thermoelectric module 102 generates the heat effect and the cool effect on the inner portion of the shoe, one at a time in accordance with the selection of the DPDT switch 106. When the thermoelectric module 102 is generating heating effect then, the red LED 107a is switched open representing the heating function. When the thermoelectric module 102 is generating cooling effect then, the green LED 107b is switched open representing the cooling function.

[0037] The water block is used as a heat sink in order to create the heating effect on one side by minimizing the cooling effect on the other side. Similarly, for the cooling effect on one side, the heating effect is minimized on other side. The water block consists of at least two main parts a base part and a top part. The base part is an area that makes contact with the thermoelectric module 102. The base is manufactured from metals with high thermal conductivity such as aluminium or copper. The top part ensures the water is contained safely inside the water block and has a connection that allows hosing to connect the water block with a water block loop. The top part is made of the same metal as that of the base part, transparent Perspex Derlin NYLON or HDPE.

[0038] According to another exemplary embodiment of the invention, FIG. 2 refers to an exemplary prototype of the thermo-electric shoes 200 with automatic temperature control.
The on/off switch 201 is pressed to run the thermoelectric module, which is placed inside the thermo-electric shoes 200. The DPDT switch 204 is used to change the polarities of the thermoelectric module. Due to the change of the polarities, the thermoelectric module generates the heat effect and the cool effect on the inner portion of the shoe, one at a time in accordance with the selection of the DPDT switch 204. When the thermoelectric module is generating heating effect then, the red LED 203 is switched open representing the heating function. When the thermoelectric module is generating cooling effect then, the green LED 202 is switched open representing the cooling function.

[0039] Numerous advantages of the present disclosure may be apparent from the discussion above. In accordance with the present disclosure, the thermo-electric shoe with automatic temperature control is disclosed here. The thermo-electric shoe is a temperature controlled shoes with a battery powered thermoelectric module which generates heat and cold inside the shoes using peltier effect.

[0040] The thermo-electric shoes is a low cost and small size shoes which is suitable for any age group. Thermo-electric shoes with thermoelectric module have advantages such as compact size, light weight, high reliability, no mechanical moving parts and no working fluid.

[0041] It will readily be apparent that numerous modifications and alterations can be made to the processes described in the foregoing examples without departing from the principles underlying the invention, and all such modifications and alterations are intended to be embraced by this application.