KR20120048423A - Vacuum insulation panel having a part for monitoring insulation efficiency - Google Patents

Abstract

The present invention provides a vacuum insulation panel having a heat insulation performance monitoring unit. The vacuum insulation panel having the insulation performance monitoring unit has a core embedded therein, a metal film surrounding the core; And a thermal insulation performance monitoring unit configured to measure a temperature change in the core and determine whether the thermal change is in accordance with whether the measured temperature change is within a preset temperature change range. Therefore, the present invention can monitor the heat insulation by grasping the thermal change in the core inside the vacuum insulation panel, it is possible to check the information on the insulation state of the vacuum insulation panel from the outside from time to time, and also from the outside user In addition, it is possible to easily know, and in the finished product, such as a refrigerator to which the vacuum insulation panel is applied, it is possible to easily check the quality of the vacuum insulation panel can reduce the defective rate of the entire finished product.

Description

VACUUM INSULATION PANEL HAVING A PART FOR MONITORING INSULATION EFFICIENCY

The present invention relates to a vacuum insulation panel having a heat insulation performance monitoring unit, and more particularly to a vacuum insulation panel having a heat insulation performance monitoring unit that can monitor the heat insulation state of the vacuum insulation panel used for insulation of the refrigerator main body.

Typically a refrigerator is a device used to freeze or store food at a low temperature for a period of time, and a refrigeration cycle device that generates cold air is generally installed inside the device.

Therefore, since the refrigerator having the freezing and refrigerating functions as described above achieves a predetermined temperature or less than the outside temperature, the refrigerator must be provided with an insulation function so that the temperature inside the refrigerator is not affected by the external temperature environment.

In general, a vacuum insulation panel embedded in the inside of the main body and the door of the refrigerator is used to perform the heat insulation function.

It is common for a conventional vacuum insulation panel to have a core inside.

Since such a vacuum insulation panel is embedded in the main body wall and door of the refrigerator, there is no way to check their insulation performance at any time, and even if a poor insulation occurs during manufacture, the product defect rate is increased. There was this.

Therefore, conventionally, the thermal conductivity measurement and the partial reverse vacuum method were used for the thermal insulation performance evaluation of a vacuum insulation panel.

First, when the thermal conductivity measurement is applied to the vacuum insulation panel, only 30 to 60 minutes of thermal conductivity measurement time is required, which leads to a long measurement time, and does not apply to all the vacuum insulation panels produced. By measuring against, there is a problem that the reliability of the thermal insulation performance is lowered.

In addition, when the partial reverse vacuum method is applied to the vacuum insulation panel, the heat insulation failure confirmation time is excellent in less than 1 minute, but there is a problem in that damage due to the reverse vacuum is provided to the vacuum insulation panel itself.

The present invention has been created to solve the above problems, the object of the present invention is to monitor the heat insulation performance to monitor the heat insulation by grasping the thermal change in the core inside the vacuum insulation panel, without damaging the vacuum insulation panel It is to provide a vacuum insulation panel having a portion.

It is another object of the present invention to provide a vacuum insulation panel having a thermal insulation performance monitoring unit that allows the user to easily check the information on the insulation state of the vacuum insulation panel from the outside at any time, and can be easily known to the user from the outside. .

It is still another object of the present invention to provide a vacuum insulation panel having an insulation performance monitoring unit that can easily inspect the quality of the vacuum insulation panel in a finished product such as a refrigerator to which the vacuum insulation panel is applied, thereby reducing the defect rate of the entire finished product. have.

In a preferred embodiment, the present invention provides a vacuum insulation panel having a heat insulation performance monitoring portion.

The vacuum insulation panel having the insulation performance monitoring unit has a core embedded therein, a metal film surrounding the core; And a heat insulation performance monitoring unit configured to measure a temperature change in the core and determine whether the heat is measured according to whether the measured temperature change is within a preset temperature change range.

Here, the heat insulation performance monitoring unit is measured from a heating element embedded in the core, a heating element for heating the heating element by receiving power from the outside, a temperature sensor for measuring the temperature of the heating element, and the temperature sensor A first controller for determining whether a temperature change according to the measured temperature value is received within a predetermined temperature change range by receiving a temperature value, and determining whether the insulation is insulated, and receiving an electrical signal from the controller to the heating element And an RF ID having a power supply for applying power, and an electrically connected signal to the controller, the information on the determined thermal insulation part is stored, and a transmitting and receiving antenna for transmitting and receiving the stored information to and from the outside using a predetermined frequency band. It is desirable to.

The first controller may be driven by receiving a driving signal from an external input device through the RFID.

The metal film includes a lower film on which the core is seated, and an upper film bonded to the upper film to cover the core.

The transmitting and receiving antenna is preferably an antenna protruding to the outside through a portion where the upper film and the lower film are bonded.

In addition, the transmission and reception antenna is a metal film antenna, it is preferable to be deposited by the heat provided from the outside is located in the bonded portion.

On the other hand, the thermal insulation performance monitoring unit is attached to the metal film, a heating plate for heating the core by receiving power from the outside, a temperature sensor embedded in the core and measuring the temperature value of the heated core and And a second controller electrically connected to the temperature sensor and positioned outside the metal film, and determining whether a temperature change according to the measured temperature value is included in a preset temperature change range, and determining whether the insulation is insulated. It may be provided.

In addition, the heat insulation performance monitoring unit is attached to the metal film, the heating plate for heating the core by receiving power from the outside, and embedded in the core and the resistance value is changed in accordance with the temperature value of the heated core It may be provided with a thermistor and a second controller which is located outside the metal film and determines whether the resistance value change according to the resistance value varying from the thermistor falls within a predetermined resistance value change range, and determines whether or not the insulation is insulated. .

The metal film may include a lower film on which the core is seated, and an upper film bonded to the upper film to cover the core, wherein the temperature sensor and the controller are electrically connected to each other through a lead wire. The lead wire is preferably heat-sealed to a portion where the upper film and the lower film are bonded.

Further, it is preferable that a coating film is further formed between the outer circumference of the lead wire and the portion where the lead wire is bonded.

In addition, a detachable portion is further provided on the lead wire near the joined portion,

The detachable part includes a first terminal part provided with a terminal groove provided at an end of the lead wire on the side of the joined portion, and a second terminal part provided at a lead wire end of the second controller side and having a terminal fitted into the terminal groove. It is desirable to.

The second controller may be electrically connected to an indicator that visually displays the thermal insulation and an alarm generator that generates an alarm to the outside when the thermal insulation is poor.

The present invention has the effect of monitoring the heat insulation by grasping the thermal change in the core inside the vacuum insulation panel.

In addition, the present invention has the effect of enabling the user to easily check the information on the insulation state of the vacuum insulation panel from the outside at any time, and also from the outside.

In addition, the present invention has the effect of reducing the defect rate of the entire product by making it easy to inspect the quality of the vacuum insulation panel in the finished product, such as a refrigerator to which the vacuum insulation panel is applied.

1 is a cross-sectional view showing a first embodiment of a vacuum insulation panel having a heat insulation performance monitoring unit of the present invention.
FIG. 2 is a diagram illustrating a heat insulation performance monitoring unit of FIG. 1.
3 is a cross-sectional view illustrating an installation state of a transceiver antenna of FIG. 1.
4 is a cross-sectional view showing a second embodiment of a vacuum insulation panel having a heat insulation performance monitoring unit of the present invention.
5 is a cross-sectional view showing an installation state of a lead wire according to a second embodiment of the present invention.
6 is a cross-sectional view showing another installation state of the lead wire according to the second embodiment of the present invention.
7 is a cross-sectional view showing that the lead wire according to the second embodiment of the present invention is coupled by a detachable part.

Hereinafter, with reference to the accompanying drawings, it will be described a vacuum insulation panel having a heat insulation performance monitoring unit of the present invention.

≪ Embodiment 1 >

1 to 3, a first embodiment of a vacuum insulation panel having a heat insulation performance monitoring unit of the present invention will be described.

An object of the present invention is to measure the thermal change of the core 200 provided inside the vacuum insulation panel to determine whether the insulation performance.

Here, in the first embodiment of the present invention will be described to determine the heat insulation performance when the heat source is present in the core 200 embedded in the vacuum insulation panel.

First, the configuration of the vacuum insulation panel according to the first embodiment of the present invention is as follows.

Referring to FIG. 1, the vacuum insulation panel of the present invention includes a metal film 100 formed of an upper metal film 110 made of metal and a lower metal film 120 bonded to both ends of the upper metal film 110. In addition, the core 200 is embedded in the metal film 100 and the heat insulation performance monitoring unit 300 to determine whether the heat insulation.

Therefore, the core 200 forms a state buried in the upper and lower metal films 110 and 120, and bonding portions P of one side of the films 110 and 120 are bonded to both ends of the upper and lower metal films 110 and 120. Is formed.

Here, the thermal insulation performance monitoring unit 300 is substantially installed inside the core 200. However, a part of the transmitting and receiving antenna 370 described below is partially exposed to the outside through the junction portion (P).

The configuration of the insulation performance monitoring unit 300 will be described.

The thermal insulation performance monitoring unit 300 includes a heating element 310, a heating element 320, a temperature sensor 330, a first controller 350, a power supply 340, and a transmission / reception antenna 370. RF ID 360 is configured.

The heating element 310 is installed inside the core 200 and is formed in a coin shape made of metal.

The heating element 320 may be a heating coil inserted into the core 200, may be electrically connected to the heating element 310, and may be disposed to surround an outer circumference of the heating element 310.

The heater 320 may be electrically connected to the power supply 340 and may be heated to a predetermined temperature by receiving power from the power supply 340. Here, the power supply 340 is also inserted into the core 200.

The temperature sensor 330 is inserted into the core 200 and is a sensor capable of measuring a temperature, such as a thermocouple, and the heating element 310 and the heating element 310 to measure a temperature value of the heating element 310. Can be contacted.

The first controller 350 is inserted into the core 200 and is electrically connected to the power supply 340 and the temperature sensor 350. The first controller 350 controls the driving of the power supply 340 to apply power to the heating element 320. The first controller 350 may receive a temperature value measured from the temperature sensor 330. The first controller 350 has a preset temperature change range. Herein, the temperature change range may be variably set through an external input unit.

The first controller 350 receives the measured temperature value and determines whether a temperature change according to the measured temperature value is included in a preset temperature change range, and thus determines whether the insulation is in good condition. Here, the predetermined temperature change range is an empirical value in the criterion judged to be a good insulation.

The ID ID 360 is inserted into the core 200 and is electrically connected to the first controller 350. The RF ID 360 includes a transmit / receive antenna 370. The transmit / receive antenna 370 may be formed in the form of a metal film, and may be partially deposited on the junction P of the metal film 100 to protrude out of the metal film 100.

In addition, the RF ID 360 may store information about the heat insulation and the information, and the information may be wirelessly communicated with the RFID ID recognition device (not shown) in proximity to the transmitting and receiving antenna 370. Accordingly, the RFID ID 360 and the RFID ID recognition device may communicate with each other using a predetermined frequency band, and thus the information may be recognized by the recognition device.

Next, the operation of the first embodiment of the vacuum insulation panel of the present invention having the configuration as described above will be described.

1 to 3, any external device (not shown) transmits a driving signal to the first controller 350 through a transmission / reception antenna 370 using a predetermined frequency band.

Subsequently, the first controller 350 operates the power supply 340 to apply a predetermined power to the heating element 320. Accordingly, the heating element 320 generates heat while heating the heating element 310 connected thereto, and the heating element 310 is heated to a predetermined temperature. Therefore, the metal coin heating element 310 is heated to a predetermined temperature while being inserted into the core 200.

Here, the temperature sensor 330 measures the temperature value of the heating element 310 to be heated and transmits it to the first controller 350.

Here, in the case where the heat insulation performance of the vacuum insulation panel including the core 200 and the metal film 100 is normal, the heating temperature of the heating element 310 may be increased rapidly compared with the case where the heat insulation performance of the panel is not normal. Can be. That is, when the heat insulation performance of the heat insulation panel is normal, since the heat lost to the outside of the panel is small, the temperature rise of the heating element 310 may be rapidly made.

On the other hand, the first controller 350 determines whether the temperature change according to the measured temperature value transmitted for a predetermined time is included in the preset temperature change range. Here, when the temperature change is included in the preset temperature change range, it is determined that the insulation is normal, and when the temperature change is not included in the preset temperature change range, the insulation is determined to be abnormal. That is, the first controller 350 may determine whether the heat insulation.

In this case, the first controller 350 transmits the result of the determined thermal insulation to the storage of the RF ID 360, and the RF ID 360 stores the result as information.

When the external RFID ID recognition device is close to the RFID ID 360, the RFID ID recognition device and the RFID ID 360 may use a predetermined frequency band using the transmission / reception antenna 370 as an information communication path. Accordingly, the RFID ID recognition device may wirelessly receive a result of the insulation insulation from the RFID ID 360.

Here, the transmission and reception antenna 370 forms a shape of a metal film and is deposited between the joint portions P of the metal film 100, and an end portion thereof is exposed to the outside of the joint portion P, thereby facilitating smooth connection with the recognition device. Information communication can be achieved.

≪ Embodiment 2 >

4 to 7, a second embodiment of a vacuum insulation panel having a heat insulation performance monitoring unit of the present invention will be described.

In the second embodiment, an external heat source (heating plate 410) is present, whereby the core 200 is heated, and an object thereof is to determine whether the heat is insulated through thermal change of the heated core 200. have.

In detail, referring to FIG. 4, the thermal insulation performance monitoring unit 400 according to the second embodiment of the present invention includes a heating plate 410, a temperature sensor 420 or a thermistor, and a second controller 430. It consists of.

Here, the temperature sensor 420 may be used to measure the temperature value of the core 200 to be heated, and the thermistor may be used to measure resistance values that vary as the core 200 is heated. Of course, the second embodiment of the present invention describes two examples of using the temperature sensor 420 and thermistor independently, but using any one of the temperature sensor 420 and thermistor at the same time to select and drive You can also do it.

First, in the case of using the temperature sensor 420, the thermal insulation performance monitoring unit 400 is attached to the outer surface of the metal film 100, a heating plate for heating the core 200 by receiving power from the outside 410, a temperature sensor 420 embedded in the core 200 and measuring a temperature value of the heated core 200, and electrically connected to the temperature sensor 420 and the metal film ( The second controller 430, which is located outside of 100, determines whether a temperature change in accordance with the measured temperature value is included in a preset temperature change range, and determines whether or not the thermal insulation is performed.

In addition, when using a thermistor, the heat insulation performance monitoring unit 400 is attached to the metal film 100, the heating plate 410 for heating the core by receiving power from the outside, and the core The thermistor which is embedded in the inside of the 200 and the resistance value is changed according to the temperature value of the heated core 200 and the resistance value change depending on the resistance value which is located outside the metal film 100 and varies from the thermistor It may be configured as a second controller 430 to determine whether or not included in the predetermined resistance value change range, and determine whether the insulation.

The metal film 100 includes a lower metal film 110 on which the core 200 is seated, and an upper metal film 120 bonded to the lower metal film 110 to cover the core 200.

The temperature sensor 420 and the second controller 430 are electrically connected to each other through a lead wire 460.

The lead wire 460 is preferably heat-sealed to the portion (P) to which the upper metal film 110 and the lower metal film 120 are bonded. Here, when the lead wire 460 connecting the temperature sensor 420 or thermistor is inserted between the films 110 and 120 and thermally fused, the lead wire 460 to prevent leakage due to a gap therebetween. ) Should have a certain thickness. That is, the thickness of the lead wire 460 is preferably made 0.2mm or less. In addition, the shape of the lead wire 460 is preferably a cross section of which is square or circular.

And, as shown in FIG. 5, a separate coating film may not be formed on the lead wires 460 between the films 110 and 120, but as shown in FIG. 6, the outer circumference of the lead wires 460 may be different from that of the lead wires 460. A coating film 461 may be further formed between the bonded portions P on which the lead wires 460 are installed.

Here, the coating layer 461 may effectively prevent leakage by preventing gaps between the films 110 and 120 and the outer circumference of the lead wire 460. The coating film 461 may be the same as the material of the film 100, preferably made of LLDPE.

Meanwhile, referring to FIG. 7, a detachable part 500 is further provided on the lead wire 461 near the joined part P, and the detachable part 500 is a lead of the joined part P side. The first terminal portion 510 provided with the terminal protrusion 511 provided at the end of the wire 461 and the lead wire 462 at the side of the second controller 430 and the terminal protrusion 511 are fitted to each other. A second terminal portion 520 having a terminal groove 521 may be provided.

Therefore, the lead wires 461 on the side P joined by the detachable part 500 and the lead wires 462 on the side of the second controller 430 can be easily detached, thereby allowing them to be detached depending on whether or not they are measured. It can be detachable or assembled.

In addition, the second controller 430 may be electrically connected to the indicator 440 that visually displays the heat insulation unit, and may be electrically connected to an alarm generator 450 that generates an alarm to the outside when the heat insulation failure occurs. Can be.

Next, the operation of the second embodiment configured as described above will be described.

Referring to FIG. 4, the second controller 430 may be driven by receiving a driving signal from the outside.

The second controller 430 heats the heating plate 410 in contact with the metal film 100 using a power supply not shown. The heating plate 410 may serve as a kind of heater. Here, the heating temperature range of the heating plate 410 may be in the range of 50 to 85 degrees Celsius, which is an experience temperature so as not to damage the metal film 100, which is the shell. In addition, the contact time between the heating plate 410 and the metal film 100 during heating is preferably set within 60 minutes.

As such, when the heating plate 410 is heated, heat generated from the heating plate 410 may be transferred to the core 200 through the metal film 100. Here, the heating temperature of the core 200 when the heat insulation performance of the heat insulation panel is normal may be lower than the heating temperature of the core when heat insulation performance is abnormal. That is, when the thermal insulation performance is typical, the thermal conductivity is lower than when the thermal insulation performance is abnormal.

When the core 200 is heated as the heating plate 410 is heated as described above, the temperature sensor 420 or thermistor embedded in the core 200 has a temperature value and a resistance value of the core 200 heated. The measurement is transmitted to the second controller 430.

The second controller 430 calculates a temperature change or a resistance change according to the heated temperature value or the resistance value, and determines whether it is included in a predetermined temperature change range or a resistance change range.

In addition, the second controller 430 is insulated when the temperature change or the resistance change according to the heated temperature value or the resistance value is within the preset temperature change range or the resistance change range. It is normal.

In addition, the determination result of the heat insulating unit is transmitted to the display unit 440 which is electrically connected to be displayed on the outside. If it is determined that the insulation performance result is poor, that is, abnormal, the second controller 430 may transmit an electrical signal to the alarm generator 450 to generate an alarm informing the outside of the insulation failure.

100: metal film
200: core
300, 400: insulation performance monitoring section
310: heating element
320: heating element
330 temperature sensor
340: power supply
350: first controller
360: RF ID
370: transmit and receive antenna
410: heating plate
420: temperature sensor
430: second controller
460: lead wire
461: coating film
500: detachable part

Claims (11)

A core having a core embedded therein and surrounding the core; And
And a thermal insulation performance monitoring unit for measuring a temperature change in the core and determining whether the thermal insulation is determined according to whether the measured temperature change is within a preset temperature change range. panel. The method of claim 1,
The insulation performance monitoring unit,
The heating element embedded in the core, the heating element to receive the power from the outside to heat the heating element, a temperature sensor for measuring the temperature of the heating element, and receives the temperature value measured from the temperature sensor is measured A first controller for determining whether a temperature change according to a temperature value is included in a preset temperature change range, and determining whether the insulation is insulated, and a power supply for receiving electric signals from the first controller and applying power to the heating element. And an RF ID electrically connected to the controller and having an ID for storing the determined adiabatic quantity and having a transmitting / receiving antenna for transmitting and receiving the stored information to and from the outside using a predetermined frequency band. Vacuum insulation panel with performance monitoring section. The method of claim 2,
The first controller is a vacuum insulation panel having a heat insulation performance monitoring unit characterized in that the drive is driven by receiving a drive signal from an external input device through the RF ID. The method of claim 2,
The metal film includes a lower film on which the core is seated, and an upper film bonded to the upper film to cover the core.
The transceiver antenna is a vacuum insulation panel having a heat insulation performance monitoring unit, characterized in that the antenna projecting to the outside through the portion where the upper film and the lower film is bonded. The method of claim 4, wherein
The transceiver antenna is a metal film antenna,
The vacuum insulation panel having a heat insulation performance monitoring unit, characterized in that deposited by the heat provided from the outside located in the bonded portion. The method of claim 1,
The insulation performance monitoring unit,
A heating plate attached to the metal film and receiving power from an external source, a temperature sensor embedded in the core to measure a temperature value of the heated core, and electrically connected to the temperature sensor And a second controller positioned outside of the metal film and determining whether a temperature change according to the measured temperature value is included in a preset temperature change range, and determining whether or not the insulation is insulated. Vacuum insulation panel with performance monitoring section. The method of claim 1,
The insulation performance monitoring unit,
A heating plate attached to the metal film and receiving power from the outside to heat the core, embedded in the core, and a thermistor having a resistance variable according to a temperature value of the heated core; and an outside of the metal film A vacuum controller having a heat insulation performance monitoring unit, comprising: a second controller positioned at and determining whether or not a change in resistance value according to a resistance value varying from the thermistor falls within a predetermined resistance value change range, and determining whether the insulation is good or bad; Insulation panels. The method according to any one of claims 6 to 7,
The metal film includes a lower film on which the core is seated, and an upper film bonded to the upper film to cover the core.
The temperature sensor and the controller are electrically connected to each other through a lead wire,
The lead wire is a vacuum insulation panel having a thermal insulation performance monitoring unit, characterized in that the heat-sealed to the portion where the upper film and the lower film is bonded. The method of claim 8,
And a coating film is further formed between the outer circumference of the lead wire and the bonded portion where the lead wire is installed. The method of claim 8,
A detachable part is further provided on a lead wire near the joined portion,
The detachable part includes a first terminal part provided with a terminal groove provided at an end of the lead wire on the side of the joined portion, and a second terminal part provided at a lead wire end of the second controller side and having a terminal fitted into the terminal groove. Vacuum insulation panel having a heat insulation performance monitoring unit, characterized in that. The method according to any one of claims 6 to 7,
The second controller is a vacuum insulation panel having a heat insulation performance monitoring unit characterized in that it is electrically connected to the indicator to visually display both the heat insulation and the alarm generator for generating an alarm to the outside in case of poor insulation.

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