KR100638896B1 - A protection against heat apparatus of monitor refrigerator - Google Patents

Abstract

The present invention relates to a heat dissipation device of a refrigerator provided with a monitor device, and more particularly, a heat generation unit for dissipating heat, a heat bridge through which heat generated in the heat generation unit is transferred, and a heat generation unit and heat. A radiator of a refrigerator having a monitor device including a circuit element contact portion for transferring heat to a heat bridge between the bridges and a heat spreader for transferring heat of the high temperature portion to the low temperature portion.

According to the spirit of the present invention as described above, in the refrigerator equipped with a monitor device, there is no separate power consumption for heat dissipation of heat generated from the circuit portion, and the effect of noise generated while the fan used for conventional heat dissipation is operated. It is also effective in ensuring the reliability and stability of the circuit. In addition, unlike the fan or cooler, the heat spreader is not a consumable item, so it can be used permanently, and it is more economical than the fan installation because it does not require a separate manufacturing cost when using the EMS shield cover as a heat spreader.

Heat dissipation unit, heat bridge, heat spread of refrigerator with monitor unit

Description

Heat dissipation device of a refrigerator equipped with a monitor device {A protection against heat apparatus of monitor refrigerator}

1 is a perspective view of a refrigerator provided with a monitor device;

2 is an assembly view of a monitor device provided in the refrigerator.

3 is a plan view of the circuit portion.

4 is an enlarged perspective view illustrating an enlarged circuit part.

5 is an enlarged perspective view of a heat transfer process in a circuit device.

6 is a view of temperature change with or without a heat bridge on the circuit unit.

7 is a graph of temperature change before and after the heat bridge installation in the H zone.

8 is a I zone temperature distribution before and after the H zone heat bridge installation.

Figure 9 is an embodiment of the present invention heat radiation device.

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

10: refrigerator 11: door 13: monitor mounting

100: display panel 101: LCD 102: LCD cover

103: circuit portion 104: EM shield cover 105: monitor case

110: T51 111: T52 112: FIN1

113: FIN2 114: IC703 inverter SMPS 115: IC501

116: ANT 120: heat generating part 121: heat spreader

122: heat bridge 123: circuit element contact portion

The present invention relates to a heat dissipation device of a refrigerator provided with a monitor device, and more particularly, to provide a structure for discharging heat generated from the monitor to the outside in a refrigerator equipped with a monitor device.

As is well known, a refrigerator is a device for freshly storing food or cooking materials by releasing cold air in a refrigerator using a cooling cycle. Recently, refrigerators having various functionalities have been developed to satisfy various needs of consumers.

In particular, while conventional electronic products have only one function, recent electronic products have been made into a multifunctional electronic product that can be utilized as various electronic products beyond the original functions of the product.

 As one example, a refrigerator equipped with a monitor device has recently been used. The monitor device is implemented as a thin, light weight liquid crystal display device. The liquid crystal display has a display panel and is installed on the front of the door. The liquid crystal display device displays not only the status information of the refrigerator such as the amount and type of food stored therein, but also various functions such as watching TV, shopping on the Internet, shopping on the home, memo function, and image chat. Can be performed.

However, in such a conventional refrigerator, since the monitor device is fixed to the front door of the door, it is not easy to discharge the heat generated from the monitor device.

In the related art, heat generated in a circuit part is discharged to the outside using a small fan. In more detail, the fan was installed on one side of the circuit unit to radiate heat between the monitor and the insulation on the door.

However, the efficiency of the fan is small, and the gap for dissipating heat is narrow, and the efficiency is remarkably decreased. For the same reason, the reliability and stability of the circuit may be caused. In addition, the noise generated from the fan is large, causing inconvenience to users, and unnecessary power is consumed to operate the small fan. Furthermore, in the case of dissipating heat of the circuit portion by using the discharge fan, the heat was directly discharged to the outside through the upper portion of the monitor device. For this reason, there is a problem that the hot heat is discharged to the face of the consumer and thereby the consumer may feel uncomfortable.

The present invention has been made to solve the above problems of the prior art, the object of the present invention is to use a heat pipe and a thermosiphon to overcome the structural constraints of the refrigerator during heat dissipation of heat generated in the refrigerator capable of watching television It is to provide a heat dissipation structure that can dissipate heat in a different way from the heat dissipation system.

The present invention relates to a heat dissipation device of a refrigerator provided with a monitor device, and more particularly, a heat generation unit for dissipating heat, a heat bridge through which heat generated in the heat generation unit is transferred, and a heat generation unit and heat. A radiator of a refrigerator having a monitor device including a circuit element contact portion for transferring heat to a heat bridge between the bridges and a heat spreader for transferring heat of the high temperature portion to the low temperature portion.

According to the present invention, in the refrigerator equipped with a monitor device, there is no separate power consumption for heat dissipation of heat generated in the circuit portion, there is no influence of noise generated when the fan used for conventional heat dissipation, reliability of the circuit It is also effective in ensuring stability.

Hereinafter, a heat dissipation device of a refrigerator having a monitor device according to the spirit of the present invention will be described in detail with reference to the accompanying drawings.

Referring to FIG. 1, a refrigerator having a monitor device includes a case forming an external appearance of a cube, a door 11 positioned at the front of the case to open the inside, and a LCD positioned at the center of the door. Included is a monitor mounting portion 13 for mounting 101.

Looking at the configuration and operation of the monitor of the refrigerator equipped with the monitor device, a television reception control unit for receiving a television signal and controlling television viewing is mounted on the upper side of the refrigerator and wired to the television reception control unit. The means receives the television signal and outputs the screen. The television reception control unit is connected to a television reception antenna for receiving a television signal in the form of a cable terminal provided on a wall inside a building, and is connected to a tuner unit for tuning a television signal received through the wired cable, and outputs from the tuner unit. The television signal is transmitted to the LCD 101, which is a display means, and controls the tuning unit and converts the signal so that the television signal is tuned according to a user's control command input through the LCD 101 or the remote controller. It consists of a television signal processing unit.

In the refrigerator in which the television signal configured as described above is received, a television reception control unit is integrally formed with the refrigerator, and the television reception control unit is connected to a television reception antenna for transmitting a television signal with a wired cable.

2 is an assembly view of the monitor device provided in the refrigerator.

Referring to FIG. 2, the monitor device includes a display panel 100 positioned at the most front part to protect the monitor device and enhance its appearance, and an LCD 101 which is stewed at the rear of the display panel 100 to display an image. And a circuit cover 103 attached to the LCD cover 102 for reinforcing and fixing the strength of the LCD 101 and a rear surface of the LCD cover 102 to control the operation of an image signal and a monitor. The circuit unit 103 includes a heat bridge 122 through which heat generated from the heat generating unit is transferred.

On the other hand, the EMI shield cover 104 and the EM shield cover which are located at the rear of the circuit unit 103 and serve as a heat spreader to block the electromagnetic waves and to spread the heat of the high temperature portion to the low temperature portion. Includes a monitor case assembled to the rear of the EMI Shield Cover (104).

3 is a plan view of the circuit portion.

Referring to FIG. 3, a plurality of circuit elements for generating and controlling an image of a monitor are placed on a circuit board. In particular, a heat bridge 122 is provided on an upper side of the circuit device among the circuit devices, and heat is transferred to a low temperature portion on the heat spreader 121 through the heat bridge 122.

The main circuit elements of the circuit elements include the T51 inverter 110, the T52 inverter 111, the FIN1 112, the FIN2 113, the IC703 inverter SMPS 114, the IC501 115, and the ANT 116.

The effect of the present invention can be seen by measuring the temperature at the time of the monitor operation of the circuit element and measuring the temperature change when the heat bridge and the heat spreader are connected to the upper side of the circuit element. The results thereof will be described later with reference to FIGS. 6 and 7.

4 is an enlarged perspective view illustrating an enlarged circuit part.

Referring to FIG. 4, the circuit part includes a heat generating part 120 that emits a large amount of heat from the circuit part, and a heat bridge positioned on an upper side of the invention part to transfer heat generated from the heat generating part upward ( 122 and a circuit element contact part 123 positioned between the heat generating part and the heat bridge to transfer heat generated in the heat generating part to the heat bridge without loss as much as possible, and a heat transferring to the upper side of the heat bridge. Spreader 121 is included.

The arrow of FIG. 4 represents a movement path of heat generated in a circuit element on the circuit portion. In more detail, the heat transfer from the high temperature portion to the low temperature circuit element through the heat bridge 122 and the heat spreader 121 is represented schematically.

Looking at the process of heat dissipation as the component of Figure 4, the heat bridge 122 is installed in a portion of the circuit elements of the circuit portion. More specifically, since not all of the circuit elements of the circuit part emit a large amount of heat, only a part of the circuit element that emits a large amount of heat in particular as compared to other elements of the circuit elements as described above is required. The heat bridge 122 is installed on the upper side of the device as described above. A material having high thermal conductivity is used for the heat bridge 122, and the heat bridge 122 is used to connect the heat spreader 121 and the circuit element to facilitate the progress of heat. A circuit element contact portion 123 is positioned between the heat generating portion and the heat bridge 122, and the circuit element contact portion 123 is also adhesive and has a high thermal conductivity, so that heat is faster and smoother without heat loss. To be delivered. Heat passing through the heat bridge 122 is evenly distributed on the entire surface of the heat spreader through the heat spreader 121.

In addition, the heat bridge 122 may be manufactured in an appropriate shape or shape according to the size or shape of the heat generating portion. More specifically, the heat bridge 122 may be determined according to the amount of heat generated from the heat generating portion, the size of the circuit element, and the material of the circuit element. The size or shape is determined by the limit temperature of the circuit element. That is, in addition to the cross section such as a circle or a square, the thickness and the width can also be adjusted to suit the situation.

On the other hand, it is possible to propose a heat dissipating device of a refrigerator having a monitor device in which at least two heat bridges are included on a circuit unit. In the case where a plurality of heat generating parts are present on the circuit part of the monitor or to increase the speed and efficiency of heat dissipation, the heat dissipation efficiency may be increased by increasing the number of heat bridges.

5 is an enlarged perspective view illustrating a heat transfer process in a circuit device.

Referring to FIG. 5, a heat bridge 120 having heat dissipation system 120 and a heat bridge positioned at an upper side of the heat dissipating unit may transfer upward heat generated from the heat dissipating unit. ) 122, a circuit element contact part 123 for transferring heat to the heat bridge between the heat generating part and the heat bridge, and a heat spreader 121 attached to an upper side of the heat bridge to transfer heat.

The circuit element contact portion 123 may be made of a material capable of minimizing heat loss and firmly fixing the heat generating portion and the heat bridge, and an aluminum epoxy or a conductive tape may be used. However, the present invention is not limited thereto, and it is apparent that a material having excellent thermal conductivity can be used within a range apparent to those skilled in the art.

On the other hand, the heat passing through the heat bridge 122 is widely spread to the low temperature portion of the heat spreader 121 by the second law of thermodynamics. Due to this effect, the cooler is not installed, but the maximum temperature on the circuit unit 103 is reduced, and the heat dissipation device is installed.

In order to maximize the above effects, the material selection of the heat bridge 122 and the heat spreader 121 is important. Instead of installing the heat spreader 121 separately, the conventional EM shield cover 104 may be used to serve as a heat spreader. In this case, a conventional galvanized steel sheet may be used as the conventional EM shield cover 104, but an EM shield cover may be manufactured by using silver or copper having excellent thermal conductivity. This also reveals that it is possible to change the material to the extent apparent to those skilled in the art.

6 is a view of temperature change with or without the heat bridge 122 on the circuit unit.

Referring to FIG. 6, it can be seen that the temperature distribution of the circuit part is very nonuniform in the range of 40 ° C. to 90 ° C. after power is supplied to the LCD monitor 101 and the steady state is reached. However, by using the conductive shield cover 104 or other frame made of a material having good thermal conductivity as a heat spreader 121, a part of the heating circuit (area H, B, C and D) Looking at the temperature distribution after the heat bridge is installed and connected to the heat spreader 121 to dissipate the heat, it can be seen that the heat of the high temperature portion moves to the low temperature portion and the heat bridge installation portion of the circuit portion has an average temperature distribution.

On the other hand, in the E zone, F zone and G zone where the heat bridge is not installed (zone I), there is no significant difference compared to before the heat spreader is installed.

7 is a graph of temperature change before and after the heat bridge installation in the H zone.

Referring to the graph, the T51 part (zone A) had a temperature drop from 97.5 ° C. to 74.9 ° C. and the T52 part (zone B) also had a temperature drop from 97.1 ° C. to 85.5 ° C. IC703 part (zone C) showed little change from 88.9 ° C to 89.4 ° C. The IC501 part (zone D) decreased in temperature from 88.0 ° C to 72.6 ° C. In other words, it can be seen from the above results that the circuit part after the installation of the heat bridge has reduced in temperature and the heat dissipation effect of the heat bridge 122 is excellent.

8 is the I zone temperature distribution before and after the H zone heat bridge installation.

Referring to the graph, the ANT part (zone E) changed from 55.1 ° C to 56.7 ° C, the FIN1 part (zone F) changed from 73.8 ° C to 71.1 ° C and the FIN2 part (zone G) 78.6 ° C to 79.0 ° C. Changed to. In summary, there was almost no temperature change before and after the experiment, and heat transfer from the high temperature part to the low temperature part occurred little.

9 is an embodiment of the heat dissipation device of the present invention.

Referring to FIG. 9, the monitor device includes a display panel 100 that forms a skeleton, an LCD 32 that is assembled to the rear of the display panel 31 to display an image, and an LCD cover 33 for fixing the LCD 32. ) And the circuit unit 103 located at the rear of the LCD cover 33 and the rear side of the circuit unit 103 to control the operation of the image signal and the monitor, and serve to transfer heat generated from the high temperature unit of the circuit unit to the low temperature unit. A heat spreader 121 and an EM shield cover 104 positioned at the rear of the spreader to block electromagnetic waves and a monitor case 105 assembled to the rear of the EM shield cover are included.

Using the above structure, in addition to the effects and embodiments that occur when the EM shield cover 104 also serves as the heat spreader 121, there is an effect to maximize the electromagnetic shielding and heat transfer efficiency. In more detail, unlike in FIG. 2, the EMI shield cover 104 and the heat spreader 121 are separated from each other so as to be in charge of electromagnetic shielding and heat transfer in different parts. When 104) plays the above two roles, it is possible to avoid the constraint of having to propose a material having high electromagnetic shielding and heat transfer efficiency.

The heat dissipation device according to the spirit of the present invention is found to be applicable to all electronic devices that require heat dissipation, such as a general television or computer in addition to the monitor attached to the refrigerator.

According to the spirit of the present invention as described above, in the refrigerator equipped with a monitor device, there is no separate power consumption for heat dissipation of heat generated from the circuit portion, and the effect of noise generated while the fan used for conventional heat dissipation is operated. It is also effective in ensuring the reliability and stability of the circuit. In addition, unlike the fan or cooler, the heat spreader is not a consumable item, so it can be used permanently, and it is more economical than the fan installation because it does not require a separate manufacturing cost when using the EMS shield cover as a heat spreader.

Claims (11)

A monitor mounting portion formed on the door of the refrigerator; A monitor selectively accommodated in the monitor mounting portion; A circuit unit which controls the operation of the monitor and includes a heat generating unit for generating heat; An EMS shield cover connected to the heat generating unit, shielding electromagnetic waves radiated from the circuit unit, and transferring heat to each other; And And a case formed on the rear side of the EM shield cover to protect the monitor.        The method of claim 1, Heat spreader of the refrigerator having a monitor device, characterized in that the heat spreader is included between the monitor circuit portion and the EM shield cover. The method of claim 1, A heat bridge transferring heat generated from the heat generating unit; And a circuit element contact portion interposed between the heat generating portion and the heat bridge and adhering the heat generating portion to the heat bridge. The method of claim 3, wherein The circuit device contact portion heat dissipation neglecting the refrigerator having a monitor device, characterized in that the material of high thermal conductivity. The method of claim 3, wherein And at least two heat bridges are formed on the circuit unit. The method of claim 1, The material of the EM shield cover is a heat dissipation device of a refrigerator provided with a monitor device, characterized in that the heat conductivity is excellent silver or copper. delete delete delete delete delete

Images