KR20140036469A - High efficient cool mat system using low electric power thermal electrical module - Google Patents

Abstract

One purpose of the present invention is to provide a cooling gel mat with a structure for maximizing the efficiency of an absorbent polymer sealed in a mat with a certain size, and the other purpose of the present invention is to provide a cooling gel mat which is to maintain a cooling effect using low power in preparation for deterioration in not only the effect of an absorbent polymer, but also the cooling effect. A cooling gel mat according to the present invention comprises a plastic base (1-1), a film layer (1-5) coated with aluminum with high thermal conductivity, and a gel layer (1-7), wherein the film layer (1-5) positioned under the plastic base (1-1) is sealed after installed to directly touch the gel layer (1-7). In addition, because the cooling effect of the gel layer cannot be maintained solely, a control unit (1-3) automatically applies electricity to a thermoelectric element (1-2) after recognizing the rise of temperature above a reference value so that the temperature can be continuously dropped, wherein the temperature is detected by a temperature detecting part (1-4) installed in the gel layer. A power source used for dropping the temperature is a lithium battery or a super condenser (1-6) having high charge efficiency and applied to a USB or a charger capable of being used anywhere without a cord.

Description

High Efficient Cool Mat System Using Low Electric Power Thermal Electrical Module

Cool mat, thermoelectric element, low power cold and hot element.

3 ℃ chill temperature! Using the principle of vaporization heat, you can feel the coolness of the third degree car, so you can spend the summer tropical night coolly. ”

It is an ad text that appears in various media every summer. Thanks to these advertisements, the so-called "cool mats" are receiving explosive reactions from consumers. At this time, there is something to entice consumers with the saying that they can spend summer cool without electricity, which is the principle of cool mat in advertisement. While emphasizing that he uses the scientific principle of 'intelligent cooling gel', he questioned the actual effect and experimented with the effect and cause of the cool mat. However, since the cooling effect is negligible, effective cooling is only possible if new technology is introduced in this technology.

The Peltier element that will be applied to this efficient cool mat device is also called thermoelectric module, Pelce element, thermo module, thermos, thermoelectric cooling element, and thermoelectric module. When electricity is applied to both junctions of one system, one junction absorbs heat and the other junction releases heat. The Peltier element consists of two or more semiconductors that are electrically in series and thermally parallel, and heat is passed through the thermoelectric element only while electricity flows alternately up and down the substrate through each N-type and P-type element. It is arranged to move in only one direction. Heat is transferred from the heat-absorbing surface to the heat-dissipating surface through the thermoelectric element and the heat transferred is proportional to the voltage supplied. If you change the polarity, you can change the function of heating and cooling by changing the polarity of the current to the same thermoelectric element.

  Pletier's main uses are as follows: In the temperature control sheet of automobiles, in the field of semiconductors, chillers, circulators, cold plates and chucks, blood analyzers in medical instruments, PCR, sample temperature cycle testers, circulators in chemistry, dehumidifiers, spectrophotometers, and optics CCD Cooling, Infrared Sensor Cooling, Laser Diode Cooling, Photodiode Cooling, SHG Laser Cooling, Computer Cooling, CPU Cooling, Chipset Burn-in, etc. It is used for waste heat generator and remote power generation for industrial purposes.

The principle of the cool mat is gel, which is a heat-absorbing cold material. According to the ad, when the body temperature reaches, it absorbs heat quickly and releases the heat as the gel moves through continuous twisting. In other words, the cooling gel maintains a proper temperature through endothermic and exothermic heat.

Endothermic reaction: A reaction in which the energy of the reactant is relatively small and the energy of the product is so large that the heat energy must be absorbed from the environment in order for the reaction to proceed.

Exothermic reaction: the energy of reacted substances is greater than the energy of the produced substances, and the energy corresponding to the difference is released to the outside. It mainly includes reactions at room temperature such as combustion reactions and neutralization reactions.

Gel: A substance in which the colloidal particles in solution lose their fluidity and harden into a solid or semi-solid state with some elasticity and firmness.

Shape and example of the gel: The colloidal particles are connected to each other in a three-dimensional mesh shape, and the space is filled with liquid. Examples are agar, gelatin, tofu and the protoplasm of living organisms.

Specific heat: The amount of heat needed to raise the temperature of 1 g of a substance to 1 ° C or 1K.

-Specific heat formula: If the mass of m (g) is supplied with Q (cal) of heat, if the temperature change by ΔT (° C) occurs, then the specific heat of this material is obtained by the following equation.

C = Q / m ΔT (cal / g ℃)

-Specific heat measurement method: Measure the specific heat of an object using the formula: Q = cm △ t and (calories lost by a high temperature object) = (heat obtained by a low temperature object).

Heat conduction: A phenomenon in which thermal energy is continuously transferred from a high temperature material to a low temperature material even though the movement of the material is not lost. It occurs mainly inside solids and, in the case of conductors, heat transfers faster. Liquids and gases have a very slow thermal conductivity compared to solids, and are difficult to diffuse the heat applied to a part. As such, the rate of conduction varies greatly depending on the type of material.

Cooling system: A device that prevents the cylinder from overheating due to the high temperature generated in an internal combustion engine. It is largely divided into air cooling and water cooling. In the air-cooled case, there are cooling fins around the cylinder, which dissipate some of the temperature in the cylinder into the atmosphere. Since cooling is inferior to water cooling, only small engines should be used. In the case of water cooling, a water jacket, a radiator, a fan, and a thermostat (thermostat) are installed around the cylinder. The structure is somewhat more complicated than air cooling, but it is widely used in the cooling system of internal combustion engine because it has much better cooling action.

-Cooling element: Also known as Peltier, Thermoelectric Module, Pelce, and Thermo Module. When two different metals deliver electricity to both junctions of a system where only the two ends are joined together, one device absorbs heat and the other bonds heat. Heat is transferred from the heat-absorbing surface to the heat-dissipating surface through the thermoelectric element and the heat transferred is proportional to the voltage supplied.

-Cooling elements: Circulator, cooling plate and chuck in medical field, blood analyzer in PCR, PCR, spectrophotometer, infrared sensor cooling, CPU cooling in computer, chipset burn-in, etc. It is used in refrigerators, hot and cold water heaters, wine refrigerators, rice barrels, small kimchi refrigerators, dehumidifiers, and waste heat generators and remote power generation.

Accordingly, an object of the present invention is to find a cooling gel mat having a structure that maximizes the efficiency of the absorbent polymer encapsulated in a mat of a certain size, and another object is to use a low power in preparation for when the cooling effect is reduced as well as the absorbent polymer. It is to provide a cooling gel mat that the cooling effect is continuously shown.

Experiment 1.Comparison of Cooling Effect of Company A, Company B and Company C

Compare the cooling effects of the three cool mat products on the market. The comparison of the cooling effect at this time uses the temperature change of the contact portion of the cool mat and the body temperature higher than the room temperature. Three cool mats will be explained by the principle that the cool mat, which best prevents the temperature rise when it comes in contact with body temperature, has a high cooling effect.

Hypothesis: Cooling effect will be greatest in order of price A <B <C.

Experiment 2. Cool mat  Internal structure and specific heat measurement of gel

Cut out the three cool mats on the market and observe their internal structure to see how they affect the cooling effect. In addition, the specific heat of each gel is measured by measuring the specific heat of iron beads and explored the cooling effect. Find out which of the internal structure and specific heat has a greater influence on the cooling effect.

Hypothesis: Both the internal structure and the specific heat of the gel will affect the cooling effect.

Experiment 3. Effective Cool Mat  device

Based on the fact that the thermal conductivity of metals is high, cool mats are designed to be more effective than cool mats on the market. In order to design the most effective cool mat, we compare experimentally the cooling effect of the cool mat, the cooling device of the computer CPU, and the heat conduction of the cooling element.

Hypothesis: Cooling mat will be the highest cooling effect in the order of cooling element of computer CPU .

Experiment 1.Comparison of Cooling Effect of Company A, Company B and Company C

-Preparations: Electronic thermometer, A company cool mat, B company cool mat, C company cool mat

① Measure the temperature of company A's cool mat at 27 ℃ by using electronic thermometer.

② Sit on coolant A company for 20 minutes.

③ After 20 minutes, measure the temperature of company A's contact mat with the body.

④ For company B and company C, experiment for 20 minutes under the same conditions and measure the temperature.

⑤ Compare the cooling effect of the three cool mats by changing the temperature due to body temperature.

Experiment 2. Internal structure of cool mat and specific heat measurement of gel

-Preparations: Company A cool mat (gel 100g), Company B cool mat (gel 100g), Company C cool mat (gel 100g), knife, 53 ℃ water, 3 transparent cups, electronic thermometer, iron ball 150g

① Cut some of the A, B and C cool mats and observe the internal structure.

② Put 100g of the three gels in the cut into three transparent cups.

③ Measure the temperature of company A gel.

④ Put iron ball in the hot water of 53 ℃ and measure the temperature of water after 1 minute. (The temperature of the water and the temperature of the iron ball at this time are the same.)

⑤ Put the hot iron ball in the gel of company A and measure the thermal equilibrium temperature after a while.

⑥ Obtain specific heat of company A gel using the fact that calorie lost by calorie and calorie of company A is the same.

⑦ B company and C company also find the specific heat using the same method.

Experiment 3. Effective Cool Mat  device

-Preparation materials: electronic thermometer, C company cool mat, computer CPU cooler, cooling element, 63 ℃ water, aluminum 10g

① Put aluminum in 63 ℃ hot water and measure the temperature of water after 1 minute.

② Put the heated aluminum on the cool mat and measure the temperature change for 4 minutes.

③ Put the hot aluminum on the cooling system and measure the temperature change for 4 minutes.

④ Place the hot aluminum on the cooling element and measure the temperature change for 4 minutes.

⑤ Compare the cooling effect of the three devices by changing the temperature caused by the device.

When the mat comes in contact with a body temperature higher than the mat's temperature, the heat moves through the contacting surface, so the temperature must be high. If the cool mat has been effective, the temperature of the contacting surfaces should be lowered or at least maintained. This is because the temperature decreases or stays as it means that it absorbs heat well from the contact area within the cool mat. However, as a result of the experiment, company A had a temperature of 5 ° C, company B had a temperature of 3 ° C, and only company C maintained the temperature. As a result, it was concluded that the cooling effect was good in the order of A <B <C and that the overall cooling effect was not large.

1 is an embodiment of the present invention.

The cool mat cooled the aluminum from 63 ° C to 29 ° C, the computer CPU cooler from 63 ° C to 18 ° C, and the cooling element from 63 ° C to 3 ° C. In other words, the cooling effect was higher in the order of cool mat <computer CPU cooler <cooling element. In the case of computer CPU coolers and cooling elements, the temperature changes caused by computer CPU coolers were more severe at first, but as a result, the cooling elements lowered the temperature of aluminum further.

Experiment 1.Comparison of Cooling Effect of Company A, Company B and Company C

This experiment was based on the heat transfer principle. Heat moves from a hot object to a cold one, and when the cool mat comes into contact with the body, heat moves from the body to the cool mat. Therefore, at room temperature, the temperature of the contacting surface should rise. If it was an effective cool mat, the temperature should drop. Absorption of heat within the cool mat lowers its surface temperature. However, as a result of the experiment, the A, B, and C cool mats all went up or remained unchanged. From this, the hypothesis that the cooling effect will be greatest in the order of A <B <C could be proved, and it was concluded that the cooling degree of the cool mat is less efficient than the advertisement.

Experiment 2. Internal structure of cool mat and specific heat measurement of gel

The experiment examined the factors that influence the cooling effect by observing the internal structure of the cool mat and measuring the specific heat of the gel. Though the internal structure and the specific heat of the gel were thought to be affected, the exploration showed that the internal structure was significant.

The elasticity and firmness of the gel were high in the order of A, B, and C, and the gel component was filled up, which affected the cooling effect. In the C cool mat internal structure, which had the best cooling effect, it had a triple structure. The first layer, aluminum, effectively conducts heat and diffuses hot heat to the surroundings. I thought it would have the effect of lowering the temperature. The third layer, the gel, is also densely stacked, which means that the thermal conductivity is good.

Unexpectedly, the specific heat of the gel did not significantly affect the cooling effect. Because the gel's specific heat is greatly affected by its gel state. In this experiment, the cooling effect of A was the lowest, but the specific heat was measured the most because it was liquid, while the cooling effect of C was the highest, but the specific heat was the smallest because it was solid.

Experiment 3. Effective Cool Mat  device

From this experiment, the cooling device with the principle of heat pipe that performs endothermic reaction through evaporation on one side and exothermic reaction by condensation on the other side than the cool mat which only performs basic endothermic heat reaction efficiently transferred heat. In addition, the cooling element (1-2) using the flow of electrons and the current installed under the cool mat was more effective than the cooling device.

Therefore, by using the thermal conductivity principle of the metal, when the heat absorbing part comes into contact with the body, a small amount of current enters, but a much more efficient cooling mat can be devised.

In the present invention, the film layer (1-5) coated with aluminum having excellent thermal conductivity on the lower layer of the plastic base (1-1) is brought into direct contact with the gel layer (1-7) and then sealed.

In addition, since the cooling effect cannot be continuously maintained by the gel layer alone, a temperature measuring unit (1-4) is installed between the gel layers, and if the temperature rises above the cough level, the controller (1-3) recognizes this automatically. The thermoelectric element (1-2) is supplied with electricity to continuously lower the temperature. At this time, the power source used is a lithium battery or a super capacitor (1-6) with excellent charging efficiency using a USB or a charger that can be used anywhere without a cord.

1-1 Cool Mat Surface
1-2 thermoelectric element (TEM)
1-3 Switches and Controls
1-4 Electronic Temperature Measurement Unit
1-5 metal conductive film layer
1-6 USB Charger.
1-7 endothermic gel layer
1-8 pillow

Claims (1)

In the present invention, the film layer (1-5) coated with aluminum having excellent thermal conductivity on the lower layer of the plastic base (1-1) is brought into direct contact with the gel layer (1-7) and then sealed.
In addition, since the cooling effect cannot be continuously maintained by the gel layer alone, a temperature measuring unit (1-4) is installed between the gel layers, and if the temperature rises above the cough level, the controller (1-3) recognizes this automatically. It is limited to a cool mat that continuously performs an action of lowering the temperature by applying electricity to the thermal electric module (1-2).

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