KR20100028216A - Apparatus for controlling temperature of calorific window - Google Patents

Abstract

PURPOSE: A device for controlling the temperature of a heating window is provided to remove dew condensation generated on the surface of the heating window by heating a nano material layer. CONSTITUTION: A device for controlling the temperature of a heating window comprises a heating window(30), a power supply unit(40), a dew condensation detecting part(50), and a controller(60). The heating window comprises a nano material layer(30b) and a power terminal(30c). The nano material layer is composed of a transparent substrate and a carbon nanotube formed on the transparent substrate. The power supply unit applies power on the power terminal. The dew condensation detecting part detects the dew condensation generated on the heating window. The controller analyzes signals detected through the dew condensation detecting part and controls the power supplied to the power terminal.

Description

Fever window temperature control device {APPARATUS FOR CONTROLLING TEMPERATURE OF CALORIFIC WINDOW}

The present invention relates to an inventive window temperature control device, and more particularly, when condensation occurs in a heating window having a nanomaterial layer including a transparent substrate and carbon nanotubes, condensation is effectively removed by controlling the temperature of the nanomaterial layer. The heating window temperature control device that can be.

In general, the car is coated with a heating element 12 at regular intervals on the glass 10 as shown in Figure 1 in order to prevent the occurrence of sexual intercourse in winter.

The heating element 12 constitutes a closed circuit to allow current to flow, and both ends of the circuit are connected to a power source.

Therefore, when power is supplied to the closed circuit, current flows along the heating element to generate heat, and this heat increases the temperature of the plate glass on which the heating element is printed, thereby eliminating frost and mist.

Recently, a transparent conductive film such as ITO (Induim Tin Oxide) or ATO (Antimony Tin Oxide) is used to secure a driver's vision. This heating element is useful for glass heating because it is conductive and transparent. When used, there is a disadvantage that the heat loss is increased due to exposure to air.

On the other hand, the outer wall glass or window of the building is an air layer between the two panes 20 and 22 by adhering a portion of the area between the outer and inner panes 20 and 22 with an adhesive 24, as shown in FIG. By forming (26), it is intended to enhance the thermal insulation effect.

However, when using such a double layer has to use two sheets of glass, not only increases the cost, but there is also a problem that the fog occurs due to the temperature difference between the outside temperature and the inside temperature.

Techniques for improving this problem have been disclosed in the Republic of Korea Patent No. 10-0797194 filed by the present applicant entitled "transparent heater and its manufacturing method".

This technique fuses a nanomaterial dense layer made of carbon nanotubes (CNT) onto a transparent substrate and forms electrodes on both edges of the nanomaterial dense layer.

According to this, since the nanomaterial is dense, the transparency is small due to the small volume, and the nanomaterial is concentrated in the small volume and connected in the form of a net, so that the conductivity is improved to have excellent heat generation performance.

However, this technology has a disadvantage in that it only generates heat by applying current to a nanomaterial dense layer made of carbon nanotubes (CNT) formed on a transparent substrate.

That is, there is a drawback of steaming or frost caused by the difference between the outside temperature and the inside temperature. However, the steaming or frost cannot be prevented by appropriately responding to the difference between the outside temperature and the inside temperature of the inside.

An object of the present invention for solving the problems of the background technology, a condensation detection unit, such as a temperature sensor or a laser detector in the heating window made of a transparent substrate and a nanomaterial layer having carbon nanotubes formed on the surface of the transparent substrate, and in the condensation detection unit The present invention provides a heating window temperature control device that includes a control unit for controlling the temperature of the nanomaterial layer by analyzing the detected signal to remove condensation by heating the nanomaterial layer when condensation occurs.

The heating window temperature control apparatus of the present invention for solving the above problems is a heating window comprising a transparent substrate and a nano material layer made of carbon nanotubes formed on the transparent substrate and a power terminal electrically connected to the nano material layer; A power supply unit for supplying power to the power terminal, a condensation detection unit for detecting condensation occurring in the heat generating window, and a control unit for controlling power supply to the power terminal by analyzing a signal detected by the condensation detection unit. It is characterized by.

A transparent substrate may be further provided on the surface of the nanomaterial layer on the other side of the transparent substrate.

The dew condensation detection unit may be provided inside and outside the heating window, respectively, and a temperature sensor for detecting an outside temperature and an inside temperature and calculating a temperature difference may be used.

The condensation detection unit may be provided inside and outside the heating window, respectively, to detect a condensation using a laser light source.

An amplifier for amplifying the signal detected from the dew condensation detection unit may be further provided between the condensation detection unit and the control unit, or a switch may be further provided between the power supply terminal and the power supply unit.

The present invention has the advantage of effectively removing condensation generated on the surface of the heating window by detecting whether condensation occurs on the surface of the heating window using a temperature difference or laser light and controlling the application of current to the nanomaterial layer according to the detection result. .

3 is a configuration diagram of a heating window temperature control apparatus of the present invention, and the present invention includes a heating window 30, a power supply unit 40, a condensation detector 50, and a controller 60.

The heat generating window 30 includes a transparent substrate 30a and a nanomaterial layer 30b made of carbon nanotubes formed on the transparent substrate 30a and a power terminal 30c electrically connected to the nanomaterial layer 30b. .

The transparent substrate 30a may be made of glass, a polymer, frit glass, a conductive polymer, or the like, but is not limited thereto.

Here, the nano material layer 30b may be densely distributed as described in the Republic of Korea Patent No. 10-0797194 filed by the present applicant or uniformly distributed carbon nanotubes on the transparent substrate (30a).

In this case, the nanomaterial layer 30b may be based on carbon nanotubes, and the thin film of carbon nanotubes includes gold (Au), silver (Ag), platinum (Pt), palladium (Pd), and copper (Cu). Carbon nanotube composites doped with one or more metals selected from the group consisting of, or coated with one or more metals selected from the group, or coated with a semiconductor coating such as silicon (Si) or an oxide semiconductor layer such as silicon oxide film (SiO ₂ ) Can be used.

In addition, the carbon nanotubes may be formed of a single-walled nanotube (SWNT), a double-walled nanotube (DWNT), a multi-walled nanotube (MWNT), or the like.

The power supply terminal 30c may be made of a conductive material such as platinum (Pt) or copper (Cu).

The power supply unit 40 generates power to the nanomaterial layer 30b electrically connected to the power terminal 30c by applying power to the power terminal 30c.

That is, the joule heat is generated in the carbon nanotubes constituting the nanomaterial layer 30b by supplying a current to the nanomaterial layer 30b through the power supply unit 40.

Accordingly, the generated heat is transferred to the outside, so that the nanomaterial layer 30b generates heat, thereby obtaining a heat insulating effect on the surface of the heat generating window 30. When condensation occurs on the surface of the heat generating window 30, condensation is removed. will be.

The dew condensation detection unit 50 detects condensation occurring in the heat generating window 30, and as illustrated in FIG. 4, a temperature sensor 51 is used.

Here, condensation refers to all the phenomenon in which the vapor of the surface of the heating window 30 sticks to the vapor by the phase change of the steam, such as steaming or frost generated on the surface of the heating window 30.

The controller 60 analyzes the signal detected by the condensation detector 50, that is, the temperature sensor, and controls the power supply to the power supply terminal 30c.

Here, the temperature sensor is installed on the outside and inside of the heating window 30, respectively, the first temperature detector 51a and the second temperature detector 51b for detecting the outside temperature and the inside temperature, respectively, each temperature detector 50a. And a temperature difference calculator 51c that receives the detected temperature through 50b and calculates the temperature difference.

At this time, each of the temperature detectors 51a and 51b has a thermistor whose resistance value changes with temperature, or a thermocouple that generates a voltage by temperature, or a current voltage characteristic of the PN junction according to temperature. A changing IC temperature sensor may be used, but is not limited thereto.

According to such a configuration, when the temperature difference calculator 51c detects and outputs the difference between the outside air and the bet, the controller 60 receives the corresponding signal and controls the power supply to the power terminal 30c according to the input signal.

Here, the temperature difference signal calculated from the temperature calculator 51c may be input to the controller 60 after being amplified by the amplifier 80.

The controller 60 may directly control the power supply 40 or further include a switch 70 between the power supply terminal 30c and the power supply 40 to control the on / off of the switch.

5 is a configuration diagram of a heating window temperature control apparatus according to a second embodiment of the present invention. In the first embodiment of the present invention, a temperature sensor is used as a dew condensation detector, but in the second embodiment of the present invention, a laser detector ( 52) is used.

Here, the laser detector 52 is provided on the outside and inside of the heat generating window 30, respectively, to receive the light emitted from the opposite side of the light emitting diode 52b to detect the transparency through the received laser light analysis to determine whether condensation occurs. .

That is, the light emitting diode 52a and the light receiving diode 52b are provided at the outside and the inside of the heat generating window 30, respectively, but the light receiving diode 52b is provided at the outside of the heat generating window 30. Through the illustrated embodiment, it may be provided inside the heat generating window 30.

Accordingly, the light emitted from the light emitting diode 52a passes through the heat generating window 30 and is received by the light receiving diode 52.

The optical signal received by the light receiving diode 52b is transmitted to the controller 60 to determine whether condensation occurs on the surface of the heating window 30 by analyzing the optical signal.

Here, an amplifier 80 may be further provided between the light receiving diode 52b and the controller 60 to amplify the optical signal input to the controller 60.

That is, when dew condensation occurs on the surface of the heat generating window 30, the transparency of the heat generating window is changed and is different from the optical signal when no condensation occurs. It is possible to determine whether condensation has occurred by comparing the optical signals.

In addition, although not shown in the drawings, the present invention further provides a transparent substrate on the surface of the nanomaterial layer of the heat generating window so that the nanomaterial layer is not directly exposed to air, thereby improving heat transfer efficiency to the transparent substrate. It can be made high and the nanomaterial layer is not damaged by moisture.

1 is a perspective view showing a car defroster according to the prior art.

Figure 2 is a perspective view of a typical double glass.

3 is a block diagram of a heating window temperature control apparatus of the present invention.

4 is a block diagram of a heating window temperature control apparatus according to a first embodiment of the present invention.

5 is a block diagram of a heating window temperature control apparatus according to a second embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

30: fever window

30a: transparent substrate

30b: nano material layer

30c: power supply terminal

40: power supply

50: dew condensation detection unit

51: temperature sensor

51a: first temperature sensing unit

51b: second temperature detection unit

51c: temperature difference calculator

52: laser detector

51a: light emitting diode

51b: photodiode

60: control unit

70: switch

80: amplifier

Claims (6)

A heating window including a nanomaterial layer made of a transparent substrate and carbon nanotubes formed on the transparent substrate, and a power terminal electrically connected to the nanomaterial layer; A power supply unit applying power to the power terminal; A condensation detector for detecting condensation occurring in the heat generating window; A controller configured to control the power supply to the power terminal by analyzing the signal detected by the condensation detector; Heating window temperature control device comprising a. The method of claim 1, Heat generating window temperature control device, characterized in that the transparent substrate is further provided on the surface of the nanomaterial layer on the other side of the transparent substrate. The method of claim 1, The dew condensation detection unit is a temperature sensor which is provided inside and outside the heating window, respectively, and detects the outside temperature and the inside temperature and calculates a temperature difference. The method of claim 1, The dew condensation detection unit is a laser detector for detecting the condensation by using a laser light source and the light receiving unit, respectively provided on the outside and inside of the heat generating window. The method according to claim 3 or 4, And an amplifier configured to amplify the signal detected by the condensation detection unit between the condensation detection unit and the control unit. The method according to claim 3 or 4, Heat generating window temperature control device, characterized in that the switch is further provided between the power supply terminal and the power supply.

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