KR20170089821A - Vacuum adiabatic body, container, container for vehicle, and vehicle - Google Patents

Abstract

Disclosed is a vacuum insulation body, comprising: a heat diffusion block placed in a third space; a thermoelectric module coming in contact with the heat diffusion block to exchange heat and placed in the third space; and a heat sink exchanging heat with the thermoelectric module and placed in a first space or a second space. According to the present invention, the present invention can obtain high insulation performance and heat transmission performance.

Description

{Vacuum adiabatic body, container, container for vehicle, and vehicle}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum insulator, a reservoir, a vehicle storage, and a vehicle. For example, the present invention relates to a vacuum insulator, a storage bin, a vehicle bin, and a vehicle, which allow food to be stored at a desired temperature in a vehicle.

In some cases, the car is equipped with a reservoir to store simple beverage cans or a small amount of food. The storage room is mainly installed in an internal space such as a armrest so that a driver can conveniently take a meal. The above-mentioned storage is installed on the luxury vehicle, thereby enhancing the image of the vehicle and making the user's convenience higher.

In the case where the storage room installed in the vehicle uses an air conditioning system installed in the vehicle, the storage room can not reach the desired temperature or the speed at which the temperature reaches the target temperature is too long. In consideration of this problem, a device using a thermoelectric module (TEM) has recently been introduced.

The thermoelectric module refers to a semiconductor device that performs cooling or heating using a thermoelectric phenomenon. The thermoelectric effect means a reversible, direct energy conversion between heat and electricity. The thermoelectric phenomenon is a phenomenon caused by the movement of charge carriers, that is, electrons and holes, in the material.

The thermoelectric phenomenon can be divided into a Seebeck effect and a Peltier effect.

The Seebeck effect is that the temperature difference is directly converted to electricity. Therefore, the present invention can be applied to the power generation field by using the electromotive force generated from the temperature difference between the both ends of the thermoelectric material. The Peltier effect is a phenomenon in which heat is generated at the upper junction and heat is absorbed at the lower junction when a current is passed through the circuit. Therefore, the present invention can be applied to the cooling field by using the temperature difference at both ends formed by the current applied from the outside. On the other hand, the Seebeck effect and the Peltier effect are different from the Joule heating in that they are thermodynamically reversible.

There has been introduced a device that can be fixedly mounted on a vehicle using the above-mentioned thermoelectric phenomenon, or can store food by using current of a vehicle cigar jack. However, these articles use a heat insulating material exemplified by foaming urethane for heat insulation. Therefore, there is a problem that a sufficient heat insulating performance can not be obtained even if a thick heat insulating wall is used and a thick heat insulating wall is used.

In order to solve the above problem, a structure for evacuating the insulating wall has been proposed. For example, Japanese Unexamined Patent Publication No. 2003202183 discloses a technique in which a surface area of an enclosure is five times the area of a heat transfer surface provided on a thermoelectric module in a heat insulating box body provided with a thermoelectric module. It is also disclosed that vacuum insulation is provided between the enclosure and the enclosure. However, polystyrene is exemplified as a substance having a low thermal conductivity in the cited document 39-45.

However, according to the above-described prior art, a sufficient degree of vacuum can not be obtained. As a result, a sufficient heat insulating effect can not be obtained. Further, since the performance of the thermoelectric module can not be increased, a large cooling effect can not be obtained in comparison with the electric energy consumed.

Japanese Unexamined Patent Publication No. 2003202183, an insulating box body provided with a thermoelectric module

SUMMARY OF THE INVENTION It is an object of the present invention to provide a vacuum insulator, a storage compartment, a vehicle compartment, and a vehicle for achieving a sufficient heat insulation performance and a high heat transfer performance of a thermoelectric module.

Further, the present invention provides a vacuum insulator, a reservoir, a vehicle storage, and a vehicle for the purpose of maintaining a high heat insulating performance stably for a long period of time.

A thermal diffusion block placed in a high level of vacuum space to enhance the high thermal insulation performance and the heat transfer performance of the thermoelectric module; A thermoelectric module that is in contact with the heat diffusion block for heat exchange and is placed in the vacuum space; And a heat sink for heat exchange with the thermoelectric module, the heat sink being placed in the first space or the second space. The vacuum pressure of the vacuum space may be 5 × 10 ^-3 Torr or less.

A thermal diffusion block placed in a vacuum space having a high vacuum level to improve the heat insulation performance and the heat transfer performance of the thermoelectric module; A thermoelectric module interfaced with the thermal diffusion block for heat exchange and placed in the vacuum space; And a heat sink for heat exchange with the thermoelectric module, the heat sink being placed in the external space, and a vacuum is applied to the thermoelectric module such that both sides of the thermoelectric module are strongly interfaced.

A first plate member defining at least a portion of the wall for the interior space of the reservoir, for enhancing the high thermal insulation performance and the heat transfer performance of the thermoelectric module; A second plate member defining at least a portion of the wall for the external space of the reservoir; A thermal diffusion block positioned in a high level vacuum space and in surface contact with the first plate member; A thermoelectric module placed in the vacuum space part and having both surfaces in heat-exchange with the thermal diffusion block and the second plate member; And at least one of the heat diffusion block and the heat sink is fastened with the plate member using a bolt and a nut.

In order to improve the heat transfer performance of the thermoelectric module, a liquid thermal interface module may be interposed on the contact surface of the heat sink, and a solid thermal interface module may be interposed on both surfaces of the thermoelectric module.

A wire is included to apply power to the thermoelectric module in order to maintain the inside of the vacuum space at a high degree of vacuum and to introduce electric wires into the vacuum space part; And a coating of a resin material covering at least a part of the outside of the lead wire.

The cover may be provided as a protruding covering which is spaced apart from each other so that the conductor can have flexibility.

In order to maintain the inside of the vacuum space at a high degree of vacuum and improve the thermal conductivity, a thermal interface module may be interposed between both surfaces of the thermoelectric module and the thermal diffusion module. As the material of the thermal interface module, indium or lead may be used.

A supporting unit for holding the vacuum space part for protecting the wire and preventing contact with parts of the wire moving path, the supporting unit comprising: a bar provided between the first plate member and the second plate member; And at least one radiation resistance sheet supported on the bar, and the radiation resistance sheet may include a wire guide portion provided in an incision on a path through which the wire passes.

In order to smoothly perform the exhaust operation through the exhaust port provided for exhausting the vacuum space part and to prevent the part where the thermoelectric module is seated from being obstructed, the wire guide part is provided with an exhaust port provided near the exhaust port And the thermoelectric module can be processed into one body with the thermoelectric module placement part.

In order to obtain surface contact between the thermoelectric module and the plate member even if there is deformation of the plate member due to a high vacuum degree of the vacuum space part, a metal material having a low melting point, for example, lead or Indium can be involved.

According to the present invention, it is possible to obtain an increase in the heat insulating effect by a high degree of vacuum, and the surface contact of parts placed in the vacuum space part can be improved by the vacuum pressing action by the vacuum pressure, The heat transfer performance of the thermoelectric module can be improved.

The thermoelectric module can be placed inside the vacuum space part without a separate fastening operation such as bolt tightening or the like by the vacuum pressure of the vacuum space part.

The thermal diffusion module and the heat sink are fastened to only the respective plates rather than the single body passing through the vacuum space portion, thereby ensuring a reliable fastening force without deteriorating the thermal conductivity.

A thermal interface module of a metal material having a small outgasing is provided on a contact surface of each component placed in the vacuum space part and a contact surface of each component placed on the outside of the vacuum space part is provided with a liquid thermal interface module, Can be improved.

In order to supply electric power to the thermoelectric module placed in the vacuum space part, the electric wire placed inside the vacuum space part is provided to peel off the coating to further reduce the out gassing. At this time, in order to prevent a short circuit between the wires, the covering of the wires can be arranged so that the protruding sheaths are spaced from each other to prevent a short circuit between the wires or a short circuit between the wires and external parts.

Since the metal thermal interface module is interposed between the thermoelectric module and the plate member, deterioration of the heat conduction performance can be prevented even when the plate member is deformed by the high vacuum pressure.

1 is a plan view of a vehicle according to an embodiment;
Fig. 2 is a vehicle storage bin according to an embodiment; Fig.
3 is an upper perspective view of the storage compartment with the door removed.
4 is a sectional view of a portion where the holder and the reservoir are in contact with each other.
5 is a sectional view of the reservoir.
6 is an exploded perspective view of a vehicle storage bin.
7 is a view for explaining the function of the thermoelectric module;
8 is a schematic cross-sectional view of one side of a reservoir in which a thermoelectric module is placed;
9 is a view showing the inside of the vacuum space portion.
10 is a chart for explaining the results of examination of each resin used in the rewriting of the supporting unit.
11 is a view showing a result of an experiment on a vacuum holding ability of a resin.
12 is a graph showing the results of analyzing the components of gas emitted from the PPS and the low outgassing PC.
13 is a graph showing the maximum deformation temperature which is broken by the atmospheric pressure at the time of high temperature exhaust.
14 is a view showing various embodiments of a conductive resistor sheet and its periphery.
15 is a graph comparing the vacuum pressure and the gas conductivity.
16 is a cross-sectional view of the reservoir at the location of the thermoelectric module;
17 is a view for explaining the fastening of the thermal diffusion block and the first plate member;
18 is a view for explaining engagement of the second plate member and the heat sink;
19 is an enlarged view of a contact surface between the thermoelectric module and the second plate member;
20 is an exploded perspective view showing the peripheral portion of the thermoelectric module in an exploded state;
21 is a view for explaining an action of a sealing terminal closing a power supply hole;
22 is a graph showing a result of an experiment on cooling performance of a storage room according to an embodiment.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described below and that other embodiments which fall within the scope of the spirit of the present invention will be readily understood by adding, It will be understood that they are also encompassed within the scope of the present invention.

The drawings used in the description of the embodiments may be expressed differently from the actual articles and may be exaggerated in order to facilitate understanding of the invention.

In the drawings used in the description of the embodiments, the reference numerals designate the parts used in different positions while performing the same function in the engineering scope, by using the same numbers, so that the mutual relationship can be easily understood . However, the minute portions such as the shape, size, material and the like of the parts may be slightly different from each other depending on the roles performed by the respective parts.

Although the first and second embodiments of the present invention describe different roles, temperatures, bands, and functions, they are described in terms of such sequences for the sake of convenience when they have a predetermined relationship . However, it does not necessarily mean that the numbers are high and low.

1 shows a plan view of a vehicle according to an embodiment.

At least one storage compartment may be provided in the vehicle 100 according to the embodiment. For example, the storage room is provided with a console box storage room 101 placed in a console box mainly used by a driver, an amortization storage room 102 placed in an armrest mainly used by a driver or an assistant driver, A glove box storage 103, a passenger storage 104 mainly used by passengers in a rear seat, and a door storage 104 provided in a door of a vehicle. The storage rooms 101, 102, 103 and 104 may function as a cooling / heating function in accordance with at least one of refrigeration and warming, or according to a selection.

In the following description of the embodiment, refrigeration will be mainly described. However, it can be understood that, when it is written as refrigeration / warmth, it refers to both refrigeration, warmth, and cases where refrigeration and warmth are selected.

The reservoir can perform a function of refrigeration / warming by using a thermoelectric module.

2 is a perspective view of a vehicle storage bin according to an embodiment.

Referring to FIG. 2, the vehicle storage bin 200 includes a main body 3 having a space in which an article is stored and at least a part of the outside being opened, And a fitting portion 2 for positioning the body in a correct position when the body is mounted on the vehicle.

The fitting portion (2) assembles at least one of the main body (3) and the door (1) in accordance with the vehicle. Therefore, even when vibration and impact are applied during operation of the vehicle, the parts aligned with the assembling of the vehicle storage bin 200 and the vehicle 100 are not separated from each other and the stable performance can be maintained. The fitting portion 2 may reduce the adverse effects of applying vibration and shock to the automobile storage 200.

The fitting portion 2 may not be provided when the automotive storage bin 200 is not mounted on a vehicle but is used separately from a vehicle. In this case, the automotive storage bin 200 may be called a storage bin. In the following, the term " storage space "

On one side of the main body 3, a heat sink 83 for sucking heat from the outer surface of the second plate member 20 providing the outer surface of the storage tank is provided. The heat sink 83 can promote heat exchange. The heat absorbed by the heat sink 83 includes a heat pipe 80 for rapidly moving the heat of the heat sink 83 to the outside, a fin 84 for rapidly convectively cooling the heat, A duct 82 for separating the space where the pin 84 is placed from the outside and a fan 81 for flowing the air to the duct 82.

The heat sink 83, the heat pipe 80, the pin 84, the duct 82, and the fan 81 are placed in an external environment different from the internal environment of the reservoir. And can rapidly release the heat from the internal environment or the cool air to the external environment.

3 is an upper perspective view of the storage bin with the door removed.

Referring to FIG. 3, a holder 90 may be provided in the inner space of the storage 200. The holder 90 may be provided with an appliance for drinking water or a beverage can. The holder is in contact with the first plate member 10 of the reservoir so that the cool air from the first plate member 10 can be rapidly delivered. At this time, the holder 90 is made of a material having a high thermal conductivity such as aluminum, so that the cold air can be more rapidly transmitted to the cooking appliance.

4 is a cross-sectional view of a portion where the holder and the reservoir are in contact with each other.

Referring to FIG. 4, the first plate member 10 and the holder 90 may be in surface contact with each other. The first plate member 10 and the holder 90 are press-fastened so that the thermal conductivity of the heat passing through the contact surface between the first plate member 10 and the holder 90 is improved. A thermal interface module (TIM) 42c is inserted into a contact surface between the first plate member 10 and the holder 90 to further promote thermal conduction.

A nut (96) is fastened to the inner surface of the first plate member (10) to provide the pressurized fastening. The nut 96 may be fastened to the first plate member 10 by welding or the like. At the mounting position of the holder 90, a hole is provided at a position corresponding to the nut 96, and a bolt 95 is inserted into the hole. The bolt 95 is fastened to the nut 96 so that the press fit between the first plate member 10 and the holder 90 can be maintained.

5 is a sectional view of the reservoir.

Referring to FIG. 5, cool air from the first plate member 10 is quickly transferred to the reservoir of the embodiment through the holder 90 through the conduction process. Thus, the user can quickly eat the refrigerated food. The thermoelectric module 40 is fastened to the side surface of the first plate member 10 to which the holder 90 is fastened so that the fastening mechanism can be cooled more quickly.

Reference numeral 20 denotes a second plate member 20 constituting the outer surface of the reservoir 20 and reference numeral 30 denotes a vacuum pressure of an interval between the first plate member 10 and the second plate member 10 The supporting unit 30 is a supporting unit. This will be described in more detail later.

6 is an exploded perspective view of a vehicle storage bin.

Referring to FIG. 6, the main body 3 and the door 1 may be provided as a vacuum insulation body. To this end, the vacuum insulator includes a first plate member 10 providing a wall of a low temperature space, a second plate member 20 providing a wall of a hot space, And a vacuum space portion 50 defined by the spacing between the second plate members 20. And a conductive resistance sheet 60 for preventing heat conduction between the first and second plate members 10 and 20.

In the reservoir, the first plate member 10 may be referred to as an inner case, and the second plate member 20 may be referred to as an outer case. The second plate member 20 may be provided with an exhaust port 21 for evacuating air in the vacuum space part 50 to create a vacuum state. The second plate member 20 may be provided with a getter port 23 in which a getter is placed for maintenance of a vacuum state. In the getter pot 23, a getter is placed so as to further increase the degree of vacuum after the completion of the exhaust so that a high degree of vacuum can be maintained. A power hole 22 may be provided in the second plate member 20 to supply power to the thermoelectric module 40 placed in the vacuum space part 50.

The first plate member 10 may define at least a part of the wall for the first space provided on the first plate member side. The second plate member 20 may define at least a part of the wall for the second space provided on the second plate member side. The first space and the second space may be defined as spaces having different temperatures. Here, the wall for each space may function not only as a wall directly contacting the space but also as a wall not contacting the space. For example, a vacuum insulator of the embodiment can be applied to an article having a separate wall adjacent to each space.

The door 1 may be a heat insulating structure using foamed resin, which is not a vacuum insulator, in order to prevent malfunction due to the characteristics of the automotive storage room, which is frequently opened and closed and has many impacts. However, a vacuum insulator can be applied to the door to maximize the effect of refrigeration by utilizing the high heat insulating performance.

The sealing hole 71 is welded to the power hole 22 to maintain the degree of vacuum of the vacuum space 50. A wire inside the vacuum space part 50 can be connected to the inner side of the terminal provided to the sealing terminal and a wire from the outside can be connected to the outer side of the terminal provided to the sealing terminal to maintain the power supply.

A supporting unit 30 may be provided to reduce the deformation of the vacuum space part 50. The supporting unit (30) includes a bar (31). The bar 31 may extend in a direction substantially perpendicular to the plate member between the first plate member and the second plate member. At least one end of the bar 31 may be provided with a support plate 35. The support plate 35 connects at least two bars 31 and may extend in a horizontal direction with respect to the first and second plate members 10 and 20.

The inner surface of the thermal diffusion block 41 may contact the outer surface of the first plate member 10. The inner surface of the thermoelectric module 40 is in contact with the outer surface of the thermal diffusion block 41. And the outer surface of the thermoelectric module can contact the inner surface of the second plate member 20. [ A thermal interface module is interposed in the contact surfaces of the components so that thermal conduction can occur rapidly.

When the reservoir is used as a refrigerator, the thermoelectric module 40 can absorb heat from the thermal diffusion block 41 and release heat to the second plate member 20. [ At this time, the thermal interface module can intervene in each contact surface so that the heat can be transferred quickly by conduction.

FIG. 7 is a view for explaining the function of the thermoelectric module. Referring to FIG. 7, a semiconductor 40a having a different polarity is provided in a series connection. The thermoelectric module 40 may have a composition of the first temperature portion 40c on one side and a second temperature portion 40b on the other side depending on the direction of current flow.

The first temperature portion 40c and the second temperature portion 40b may be in contact with the outer surface of the thermal diffusion block 41 and the inner surface of the first plate member 20, respectively.

8 is a schematic cross-sectional view of one side of the reservoir in which the thermoelectric module is placed.

Referring to FIG. 8, a supporting unit 30, a thermal diffusion block 41, and a thermoelectric module 40 are disposed in the inner space of the vacuum space part 50. A thermal diffusion block (41) abuts on the outer surface of the first plate member (10). The inner surface of the thermoelectric module 40 is in contact with the outside of the thermal diffusion block 41. The outer surface of the thermoelectric module (40) abuts the inner surface of the second plate member (20).

According to the structure, the thermal diffusion block 41 absorbs heat in a wide area of the first plate member 10, and the absorbed heat is transmitted to the second plate member 20 through the thermoelectric module 40 . The heat sink 83 contacts the outer surface of the second plate member 20 to absorb heat from the second plate member 20. The heat sink 83 may be provided to have a larger area than the corresponding direction of the thermoelectric module 40. According to this, the second plate member 20 can be cooled quickly.

The supporting unit 30 is provided with a first supporting unit 37 provided at a portion where the thermoelectric module 41 and the thermal diffusion block 41 are placed and a second supporting unit 37 provided at a portion where the plate members 10 and 20 face each other A second supporting unit 38 may be included.

The first supporting unit 37 may be provided at a lower height than the second supporting unit 38. This is intended to prevent deformation of the plate members 10 and 20 due to the vacuum pressure by providing a sufficient strength to the portions where the thermoelectric module 41 and the thermal diffusion block 41 are placed.

On the other hand, there is a contact area in which the supporting unit is not provided and the thermoelectric module 40 directly contacts the second plate member 20. The contact area can serve as a part for enhancing the contact reliability between the thermoelectric module 40 and the second plate member 20. [ In other words, it is not necessary to provide a separate pressing structure for improving the thermal conductivity of the both sides of the thermoelectric module 40, and the thermoelectric module 40 and the second plate member 20 and the contact surfaces of the thermoelectric module 40 and the thermal diffusion block 41 can be pressed. Of course, the vacuum degree of the vacuum space part 50 can be maintained at a considerably high level for this purpose.

In the first supporting unit 37, the interval of the bars 31 can be adjusted in consideration of the supporting action of the second plate member 2 and the pressing action of both surfaces of the thermoelectric module 40. For example, the spacing of the bars 31 nearest to the edges of the thermoelectric module 40 may be about 1.1 to 3 times larger than the spacing between the bars 31. This makes it possible to ensure high reliability of the pressing action of both surfaces of the thermoelectric module 40. [

The supporting unit will be described in more detail.

9 is a view showing the inside of the vacuum space part.

Referring to FIG. 9, the vacuum space portion 50 may be provided in a third space having a pressure different from that of the first space and the second space, preferably in a vacuum state, thereby reducing heat loss. The third space may be provided at a temperature corresponding to a temperature between the first space and the second space. The third space is provided as a vacuum state space. Therefore, the first plate member 10 and the second plate member 20 are subjected to a force to contract in a direction approaching each other by a force equivalent to the pressure difference of the respective spaces. As a result, the vacuum space portion 50 can be deformed in a decreasing direction. In this case, it is possible to cause an increase in the radiation transmission amount due to the contraction of the vacuum space portion and an adiabatic loss due to the increase in the amount of conduction transmission due to the contact of the plate members 10 and 20.

A supporting unit 30 may be provided to reduce the deformation of the vacuum space part 50. The supporting unit (30) includes a bar (31). The bar 31 may extend in a direction substantially perpendicular to the plate member to support an interval between the first plate member and the second plate member. At least one end of the bar 31 may be provided with a support plate 35. The support plate 35 connects at least two bars 31 and may extend in a horizontal direction with respect to the first and second plate members 10 and 20. The support plate may be provided in a plate shape and may be provided in a lattice shape so that an area of contact with the first and second plate members 10 and 20 is reduced to reduce heat transfer.

The bar 31 and the support plate are fixed at least at one portion and can be inserted together between the first and second plate members 10 and 20. The support plate 35 may contact at least one of the first and second plate members 10 and 20 to prevent deformation of the first and second plate members 10 and 20. The total cross-sectional area of the support plate 35 may be greater than the total cross-sectional area of the bar 31 so that the heat transmitted through the bar 31 Can be diffused through the support plate (35).

As the material of the supporting unit 30, a PC, a glass fiber PC, a low-outgassing PC (high-temperature glass), a high- , PPS, and LCP can be used.

A radiation resistance sheet 32 for reducing thermal radiation between the first and second plate members 10 and 20 through the vacuum space 50 will be described.

The first and second plate members 10 and 20 may be made of stainless steel capable of providing corrosion resistance and sufficient strength. Since the stainless steel material has a relatively high emissivity of 0.16, a large amount of radiant heat transfer may occur. In addition, since the emissivity of the supporting unit made of resin is lower than that of the plate member and is not entirely provided on the inner surfaces of the first and second plate members 10 and 20, it does not greatly affect radiant heat. Therefore, the radiation resistance sheet is provided in a plate shape across most of the area of the vacuum space part 50 in order to focus on reduction of radiant heat transmission between the first plate member 10 and the second plate member 20 .

As the material of the radiation resistance sheet 32, an article having a low emissivity is preferable, and in the embodiment, an aluminum thin plate having an emissivity of 0.02 can be preferably used. Further, since a single radiation resistance sheet can not obtain a sufficient radiation heat shielding effect, at least two radiation resistance sheets 32 may be provided at regular intervals so as not to contact each other. At least one sheet of radiation resistance sheet may be provided in contact with the inner surfaces of the first and second plate members 10 and 20.

Fig. 10 is a table for explaining the results of examination of each resin used in the rewriting of the above-mentioned supporting unit.

Referring to FIG. 10, the present inventors have studied various resin materials, but most resins can not be used because their outgrowth rate and water absorption rate are remarkably high. As a result, a resin satisfying the conditions of outgraging rate and water absorption rate was studied roughly. As a result, PE material is inadequate to use due to high outgasing rate and low compressive strength. PCTFE material is not suitable for use because of its high price, and PEEK material is inadequate to use due to high outgasing rate.

Accordingly, it has been found that the supporting unit can use a resin selected from a polycarbonate (PC), a glass fiber PC, a low outgassing PC, a polyphenylene sulfide (PPS), and a liquid crystal polymer (LCP). However, in the case of PC, the outage rate is as low as 0.19, so it can be used by extending the baking time to a certain level while heating.

Various studies have been carried out on the material of the resin which is expected to be usable in the vacuum space part to find the optimum material. Hereinafter, the results of each research activity will be described with reference to the drawings.

Fig. 11 shows the results of experiments on the vacuum holding ability of the resin.

Referring to FIG. 1, there is shown a graph showing a result of testing a performance capable of maintaining a vacuum after the supporting unit is manufactured using each resin. First, the supporting unit manufactured using the selected material was washed with ethanol, exposed to outside air for 2.5 hours at a low pressure, put in a vacuum insulation body, and exhausted at 90 degrees Celsius for about 50 hours The vacuum holding performance was measured.

In the case of the LCP, the initial evacuation performance is the best, but the vacuum retention performance is poor. This can be expected to be due to temperature sensitivity. Also, it is expected that 5 × 10 ^-3 torr will be maintained for about 0.5 years if it is the final allowable pressure. Therefore, the material of the supporting unit is disadvantageous compared with other materials.

It can be seen that the glass fiber PC (G / F PC) has a high exhaust speed but a poor vacuum holding performance. This may be due to the influence of additives. In addition, it is expected that the vacuum performance can be maintained for about 8.2 years under the same conditions. Therefore, the material of the supporting unit is disadvantageous compared with other materials.

The low outgassing PC (O / G PC) is superior to the two materials in terms of vacuum holding performance and is expected to maintain the vacuum performance for about 34 years under the same conditions. However, since the initial exhaust performance deteriorates, the manufacturing efficiency is lowered.

In the case of the PPS, it can be seen that the vacuum holding performance is remarkably excellent and the exhaust performance is excellent. Therefore, when the vacuum holding performance is used as a standard, it is most preferable to use the material of the PPS as the material of the supporting unit.

FIG. 12 shows the result of analysis of gas components emitted from PPS and low outgassing PC. The horizontal axis represents the molecular weight of the gas and the vertical axis represents the concentration. Figure 6a as the analysis of the emission gas of low outgassing PC, H ₂ sequence (Ⅰ), H ₂ O series _{(Ⅱ), N 2 / CO} / CO 2 / O 2 series (Ⅲ), and hydrocarbons (Ⅳ) And the like. FIG. 6B is an analysis of the emission gas of PPS, showing that H ₂ series (I), H ₂ O series (II) and N ₂ / CO / CO ₂ / O ₂ series (III) have. 6C is an analysis of the discharge gas of stainless steel, and it is seen that a gas similar to PPS is emitted. As a result, it was confirmed that PPS showed similar emission of gas as stainless steel.

As a result of the analysis, it was confirmed once again that PPS is excellent as a material of the supporting unit.

FIG. 13 shows the result of measuring the maximum deformation temperature which is broken by the atmospheric pressure at the time of high temperature exhaust. At this time, the bars 31 were provided at intervals of less than 30 mm with a diameter of 2 mm. Referring to FIG. 13, it can be seen that the fracture occurred at 60 ° C for PE, the fracture occurred at 90 ° C for low outgassing PC, and the fracture occurred at 125 ° C for PPS.

As a result of the above analysis, it was found that PPS was the most preferable material for the resin used in the vacuum space portion. However, in terms of manufacturing costs, a low outgassing PC could be used.

14 is a view showing various embodiments of the conductive resistance sheet and its periphery. In FIG. 6, the conductive resistance sheet is shown in a simplified form, but it can be understood in more detail with reference to the drawings.

Firstly, the conductive resistor sheet shown in Fig. 14A can be preferably applied to a vacuum insulator applied to the main body 3. In detail, the second plate member 20 and the first plate member 10 should be sealed in order to keep the inside of the vacuum insulator under vacuum. At this time, since the temperature of the two plate members are different from each other, heat transfer may occur between them. A conductive resistance sheet (60) is provided to prevent heat conduction between two different plate members.

The conductive resistance sheet 60 may have a sealing portion 61 to define at least a part of the wall for the third space and to seal both ends thereof to maintain a vacuum state. The conductive resistance sheet 60 is provided as a thin sheet of micrometers to reduce the amount of heat conduction along the wall of the third space. The sealing portion 61 may be provided as a welded portion. That is, the conductive resistance sheet 60 and the plate members 10 and 20 can be fused together. The conduction resistance sheet 60 and the plate members 10 and 20 may be made of the same material and stainless steel so as to bring about fusion between each other. The sealing portion 61 is not limited to the welding portion but may be provided through a method such as caulking. The conductive resistance sheet 60 may be provided in a curved shape. Therefore, the distance of heat conduction of the conductive resistance sheet 60 is provided longer than the straight line distance of each plate member, so that the amount of heat conduction can be further reduced.

A temperature change occurs along the conductive resistance sheet 60. Therefore, in order to block the heat transfer to the outside, it is preferable that a shielding portion 62 is provided outside the conductive resistance sheet 60 so as to perform a thermal insulation action. In other words, in the case of the reservoir, the second plate member 20 is hot and the first plate member 10 is cold. The conductive resistance sheet 60 is thermally conductive at a high temperature to a low temperature, and the temperature of the sheet rapidly changes along with the heat flow. Therefore, when the conductive resistance sheet 60 is opened to the outside, heat transfer through the open area may occur severely. In order to reduce the heat loss, the shielding portion 62 is provided outside the conductive resistance sheet 60. For example, even when the conductive resistance sheet 60 is exposed to either the low-temperature space or the high-temperature space, the conductive resistance sheet 60 is not preferable because it does not function as a conductive resistance by the amount of exposure .

The shield 62 may be provided as a porous material in contact with the outer surface of the conductive resistance sheet 60 or may be provided in a heat insulating structure exemplified by a separate gasket placed outside the conductive resistance sheet 60 , And the vacuum insulator used for the main body 3 may be provided as a corresponding portion when the door 1 is closed.

The conductive resistance sheet shown in Fig. 14B can be preferably applied to the vacuum insulator provided in the door 1, and a portion different from Fig. 14A will be described in detail, and the same description applies to the same portions. A side frame (70) is further provided on the outside of the conductive resistance sheet (60). The side frame 70 may include parts for sealing the door and the main body, an exhaust port for the exhaust process, and a getter port for vacuum maintenance. This is because, in the case of the main body, the mounting of the parts can be convenient, but in the case of the door, the position is limited.

In the case of the vacuum heat insulator used for the door 1, the conductive resistance sheet 60 is difficult to be placed at the tip end portion of the vacuum space portion, that is, at the corner side surface portion. This is because the edge portion of the door 3 is exposed to the outside unlike the main body. In more detail, when the conductive resistance sheet 60 is placed at the front end of the vacuum space, the edge of the door 3 is exposed to the outside, and therefore, a separate heat insulating portion must be formed for the insulation of the conductive resistance sheet 60 There is a disadvantage.

15 is a graph comparing the vacuum pressure and the gas conductivity.

Referring to FIG. 15, the gas conductivity according to the vacuum pressure according to the size of the gap in the vacuum space 50 is expressed by a graph of the substantial heat transfer coefficient eK. The gap of the vacuum space portion was measured in three cases of 2.76 mm, 6.5 mm, and 12.5 mm. The gap of the vacuum space part is defined as follows. Wherein when the radiation resistance sheet (32) is present in the vacuum space part, the radiation resistance sheet is a distance between the radiation resistance sheet and the adjacent plate, and if there is no radiation resistance sheet in the vacuum space part, 2 is the distance between the plate members.

The point corresponding to the actual heat transfer coefficient 0.0196 W / mk of the conventional reservoir for foaming polyurethane and providing the heat insulating material was 2.65 × 10 ^-1 Torr even when the gap size was 2.76 mm. On the other hand, the point at which the effect of reducing the adiabatic effect due to the gas conduction heat saturates even when the vacuum pressure is lowered is about 5 × 10 ^-4 Torr. Also, when it is higher than 5 × 10 ^-3 Torr, the adiabatic effect drops sharply. Under this background, the conventional pressure of 5 × 10 ^-3 Torr can be determined as a point where the effect of reducing the gas conduction heat is saturated. Therefore, it is preferable that the vacuum pressure of the vacuum space is maintained at 5 x 10 < ^-3 > Torr or less in order to obtain the best heat insulating performance without radiating and radiating.

As can be seen from the above description, the pressure inside the vacuum space portion 50 is maintained in a substantially vacuum state in which the gas is very thin in order to reduce radiative heat transfer. Therefore, a considerable pressure is applied between the plate members 10 and 20, and a contracting force is applied in a direction in which the distance between the plate members 10 and 20 is reduced. The shrinking force is applied to both sides of the thermoelectric module 40. [

Figure 16 is a cross-sectional view of the reservoir at the location of the thermoelectric module. The heat transfer path through the thermoelectric module will be described with reference to FIG.

Referring to FIG. 16, a thermal diffusion block 41 is disposed on the outer surface of the first plate member 10. The thermoelectric module (40) is placed at the center of the outer surface of the thermal diffusion block (41). The inner surface of the second plate member 20 abuts against the outer side of the thermoelectric module 40. A heat sink 83 is placed on the outer surface of the second plate member 20.

As described above, the vacuum space portion 50 is in a vacuum state close to zero. Therefore, a large contractive force acts between the plate members 10 and 20. The heat transfer block 41 and the second plate member 20 which are in contact with the inner and outer surfaces of the thermoelectric module 40 perform heat transfer by conduction. In other words, when the contact surfaces are spaced apart from each other, heat conduction can not be performed, and since they are placed inside the vacuum space part 50, a convection action does not occur and only heat transfer by radiation occurs. It is therefore important that the contact surface is in perfect contact.

The contraction force between the plate members 10 and 20 due to the vacuum pressure of the vacuum space portion 50 is lower than the surface contact between the thermoelectric module 40 and the thermal diffusion block 41, The surface contact of the plate member 20 can be improved to improve the performance of the heat conduction. The contact surface between the thermoelectric module 40 and the thermal diffusion block 41, the contact surface between the thermoelectric module 40 and the second plate member 20 and the contact surface between the thermal diffusion block 41 and the first plate member 10 The heat conduction can be further enhanced through the thermal interface modules 42b, 42c and 42d.

As the thermal interface used herein, a metal material exemplified by indium or lead can be used. Accordingly, the influence of outgassing inside the vacuum space part 50 can be minimized.

As another example, a heat grease may be used as the thermal interface module 42a used for the contact surface between the heat sink 83 and the second plate member 20. [ This is because the contact surface is outside of the vacuum space part 50, so there is no influence of outgasing.

17 is a view for explaining the fastening of the thermal diffusion block and the first plate member;

As described above, the quality of the contact surface between the respective members determines the heat conduction performance. Therefore, it is preferable to secure the fastening force between the thermal diffusion block 41 and the first plate member 10 by using bolts and nuts.

17, the nut 96 is fastened to the first plate member 10 by welding or the like. The heat diffusion block 41 is provided with a hole having a large head portion so that the nut 96 is placed on the head portion. Thereafter, the bolt 95 is fastened to penetrate through the hole and the nut 96. The positions where the bolts 95 and the nuts 96 are fastened to each other may be provided at about 4 to 6 positions in the entire thermal diffusion block 41. A thermal interface module 42a made of a metal material may be inserted into the contact surface between the thermal diffusion block 41 and the first plate member 10.

18 is a view for explaining the engagement of the second plate member and the heat sink.

As described above, the quality of the contact surface between the respective members determines the heat conduction performance. Therefore, it is preferable that the heat sink 83 and the second plate member 20 are secured using a bolt and a nut to secure a strong fastening force.

18, the nut 96 is fastened to the second plate member 20 by welding or the like. The heat sink 83 is provided with a hole having a large head so that the nut 96 is placed on the head. Thereafter, the bolt 95 is fastened to penetrate through the hole and the nut 96. A portion where the bolt 95 and the nut 96 are engaged with each other may be provided at about 6 to about 10 points in the entire heat sink 83. A liquid thermal interface module using heat grease may be inserted into the contact surfaces of the heat sink 83 and the second plate member 20.

19 is an enlarged view of a contact surface between the thermoelectric module and the second plate member;

Referring to FIG. 19, the second plate member 20 is provided as a thin plate, and the thermoelectric module 40 is provided as a ceramic. The second plate member 20 is brought into line contact with the edge of the thermoelectric module 40 and the thermoelectric module 40 is brought into contact with the second plate member 20, The second plate and the thermoelectric module 40 may be spaced apart from each other. This can be done by adjusting the spacing of the bars 31 provided in the supporting unit 35. In this case, the heat conduction performance deteriorates.

In order to solve this problem, indium or lead may be used as the thermal interface module 42b.

The melting point of indium is 156 ° C. and the temperature is low. Therefore, by heating the thermal interface module 42b to which indium is applied after applying the vacuum degree of the vacuum space portion 50 at a set value, the second plate and the thermoelectric module 40 can be spaced apart from each other. In this case, deterioration of the heat conduction performance can be prevented.

The lead has a melting point of 327 degrees, but has a loose property. Therefore, when the degree of vacuum of the vacuum space portion 50 is applied as a set value and the second plate member 20 is deformed, the thermal interface module 42b to which the lead is applied is formed at the center of the thermoelectric module 40 2 plate and the thermoelectric module 40 can be spaced apart from each other. In this case, deterioration of the heat conduction performance can be prevented.

The thermal diffusion layer 41 and the thermoelectric module 40 may be provided with the same structure on the contact surface, thereby improving the thermal conductivity of the contact surface.

20 and 21, a configuration for applying power to the thermoelectric module will be described.

20 is an exploded perspective view showing the peripheral portion of the thermoelectric module in an exploded manner.

20, the supporting unit 30 is provided with at least two radiation resistance sheets 32 which are fitted to the supporting plate 35 at predetermined intervals. The radiation resistance sheet 32 may be supported on the bar 31 connecting the support plate 35 with a predetermined gap therebetween. Here, the spacers may be placed between the respective radiation resistance sheets 32.

The thermoelectric module 40 and the thermal diffusion block 41 can be brought into direct contact with the plate members 10 and 20 without the support unit 30 being provided where the thermoelectric module 40 is placed.

A pair of wires 213 may extend from the power hole 22 to the thermoelectric module 40 in order to apply power to the thermoelectric module 40. [ The pair of wires 213 may be provided in the state of a stripped wire to eliminate outgasing. The pair of wires 213 may be provided with a protruding cover 214 of a resin material in order to prevent short-circuiting between each other at the time of bending and to prevent contact of respective parts placed inside the vacuum space part. The protruding cover 214 may be provided with adjacent parts with predetermined spacing. At this time, the lead wire made of copper material is bent without the protruding cover 214, so that the predetermined bending process can be performed.

The protruding cover 214 may be made of a material having a small outgasing such as a material providing the supporting unit 30. For example, polycarbonate (PC), glass fiber PC, low outgassing PC, polyphenylene sulfide (PPS), and liquid-crystal polymer (LCP) More preferably, a PPS which is the same material as the supporting unit can be used. In the case of using polycarbonate, glass fiber PC, low outgassing PC, polyphenylene sulfide (PPS), and liquid-crystal polymer (LCP) with low outgassing as a whole, the covering may be provided as a whole. However, since the general wire covering uses a plastic vinyl chloride resin, the protruding cover 214 may be used.

In order to prevent shorting of the wire 213 on the path through which the wire 213 passes, a predetermined area in the entire area of the radiation resistance sheet 32 can be cut. Specifically, the radiation resistance sheet 32 may be cut along the path of the wire 213 to provide the wire guide portion 324. The wire guide portion 324 may be cut along with the thermoelectric module placement portion 322 where the thermoelectric module 40 is placed.

Exhaust is made through the exhaust port 21 to make the vacuum space part 50 vacuum. A strong flow rate may be generated in the exhaust port 21 at the beginning of the air discharge process. In order to prevent deformation of the radiation resistance sheet 32 due to the strong flow velocity and to prevent contact with each other, the position corresponding to the exhaust port 21 in the radiation resistance sheet 32 is cut to provide an exhaust port 323 can do. The exhaust port setting portion 323 may be cut along with the wire guide portion 324.

21 is a view for explaining the action of the sealing terminal closing the power supply hole.

Referring to Fig. 21, the sealing terminal 71 includes a cylindrical sealing frame 74, for example. The shape of the sealing frame 74 may be provided in a shape similar to the shape of the power supply hole 22. [ Two power terminals 72 can pass through the center of the sealing frame 74. The gap between the power supply terminal 72 and the sealing frame 74 may be sealed with an encapsulating material 73. The encapsulating material 73 may be made of glass.

The power terminal 72 may be inserted into the power hole 22 so that one end of the power terminal 72 may be connected to the wire 213. The other end of the power terminal 72 may be connected to an external power source. The sealing frame 74 covers the power hole 22 and the sealing frame 74 and the second plate member 20 are welded to seal the space between the members.

22 is a graph showing a result of an experiment of a storage room according to an embodiment.

Referring to FIG. 22, the interval of the vacuum space 50 is 10 mm, the internal capacity of the reservoir is 11 liters, the thermocouple 40 uses N49 of LG Innotek, the power of 50 W is applied, 500 cc of beverage was left in the container.

As a result of measuring the time when the internal temperature of the storage container dropped from 25 degrees Celsius to 15 degrees Celsius degrees, it was 0.9 hours. In addition, it has been confirmed that the temperature can be lowered to minus 19 degrees Celsius after falling sufficiently below.

In the above embodiment, the case where the storage room is used as a refrigerator has been mainly described. However, by switching the direction of the current supplied to the thermoelectric module 40, it can be easily expected that the storage 200 can be used as a warming-up furnace.

According to the present invention, it is possible to provide a vacuum storage container using a thermoelectric module. Further, it is possible to provide a storage space suitable for a vehicle. Therefore, it is possible to further enhance the needs of the consumer, and the industrial application is highly expected.

1: Door
2: Fitting portion
3: Body
40: thermoelectric module
41: thermal diffusion block
83: Heatsink
100: vehicle
200: Car storage

Claims (14)

A first plate member defining at least a portion of the wall for the first space and being capable of flexing against the vacuum pressure;
A second plate member defining at least a portion of a wall for a second space different in temperature from the first space and being capable of flexing against a vacuum pressure;
A sealing part sealing the first plate member and the second plate member so as to provide a third space which is a space between the temperature of the first space and the temperature of the second space and is a vacuum space;
A supporting unit for maintaining the third space;
A thermoelectric module placed in the third space and having a first surface and a second surface, the temperature of which can be differentiated by the thermoelectric effect;
A third surface and a fourth surface, wherein one surface of the first surface and the second surface of the thermoelectric module is in contact with any one of the third surface and the third surface to perform heat exchange, and the first plate member and the second plate A thermal diffusion block thicker than the plate member; And
And a heat sink for heat exchange with the other surface of the first surface and the second surface of the thermoelectric module and placed in the first space or the second space,
In the supporting unit,
A bar provided between the first plate member and the second plate member; And
At least one radiation resistance sheet supported on the bar,
Wherein none of the third surface and the fourth surface, which is not in contact with one surface of the first surface and the second surface of the thermoelectric module, is provided wider than the first surface and the second surface of the thermoelectric module,
Wherein the heat sink has a larger heat transfer area than the other surfaces of the first and second surfaces of the thermoelectric module. The method according to claim 1,
Wherein the thermal diffusion block is in contact with the first plate member, the thermoelectric module is in contact with the second plate member, and the heat sink is in contact with the second plate member. 3. The method of claim 2,
A nut fastened to an inner surface of the first plate member; And
And a bolt fastened to the nut through the thermal diffusion block. 3. The method of claim 2,
A nut fastened to an outer surface of the second plate member;
A bolt interposed between the heat sink and the nut; And
And a liquid interface module interposed between the heat sink and the second plate. The method according to claim 1,
Wherein at least one of the thermoelectric module and the thermal diffusion block has a thermal interface module interposed therebetween. 6. The method of claim 5,
Wherein the thermal interface module is made of a metal. The method according to claim 6,
Wherein the metal is indium or lead. The method according to claim 1,
The thermoelectric module includes a wire for applying power to the thermoelectric module,
In the wire,
Internal conductors; And
Wherein a coating of a resin material covering at least a part of the outside of the conductor is included. 9. The method of claim 8,
Wherein the resin material is at least one of polycarbonate (PC), glass fiber PC, low outgassing PC, polyphenylene sulfide (PPS), and liquid-crystal polymer (LCP). 9. The method of claim 8,
Wherein the coating is a protruding coating which is spaced apart from each other to cover the conductor. The method according to claim 1,
And the plate member is further provided with a getter pot. A body provided with an internal space capable of storing the storage; And
And a door provided to open and close the main body from an external space,
Wherein at least one of the body and the door is provided as a vacuum insulator,
In the vacuum heat insulating member,
A first plate member defining at least a portion of the wall for the interior space;
A second plate member defining at least a portion of a wall for said outer space;
A sealing part sealing the first plate member and the second plate member to provide a vacuum space part between the temperature of the internal space and the temperature of the external space, which is a vacuum space;
A supporting unit for holding the vacuum space part;
A thermoelectric module placed in the vacuum space and having a first surface and a second surface, the temperature of which can be differentiated by a thermoelectric effect;
A wire for applying power to the thermoelectric module;
Wherein one surface of the first surface and the second surface of the thermoelectric module is in contact with one of the third surface and the third surface and is heat-exchanged to diffuse heat, and the first plate member And a thermal diffusion block thicker than the second plate member; And
A heat sink for heat exchange with the other surface of the first surface and the second surface of the thermoelectric module and placed in the outer space,
Wherein none of the third surface and the fourth surface of the thermal diffusion block which is not in contact with one surface of the first surface and the second surface of the thermoelectric module is provided wider than the first surface and the second surface of the thermoelectric module,
And both sides of the thermoelectric module are strongly interfaced by the vacuum pressure of the vacuum space part. 13. The method of claim 12,
Wherein the plate member is further provided with a getter port. A body provided with an internal space capable of storing the storage;
A door provided to open and close the main body from an external space; And
A fitting portion provided at least in an interval between the main body and the vehicle so as to allow the main body to be positioned at an accurate position of the vehicle,
Wherein at least one of the body and the door is provided as a vacuum insulator,
In the vacuum heat insulating member,
A first plate member defining at least a portion of the wall for the interior space;
A second plate member defining at least a portion of a wall for said outer space;
A sealing part sealing the first plate member and the second plate member to provide a vacuum space part between the temperature of the internal space and the temperature of the external space, which is a vacuum space;
A supporting unit for holding the vacuum space part;
A thermal diffusion block placed in the vacuum space and in surface contact with the first plate member and thicker than the first plate member and the second plate member;
A thermoelectric module having a first surface and a second surface that can be provided at different temperatures by a thermoelectric effect so that both surfaces of the thermoelectric module are placed in the vacuum space portion and both surfaces thereof can be heat-exchanged with the thermal diffusion block and the second plate member, ;
A wire for applying power to the thermoelectric module; And
And a heat sink for heat exchange with the second plate member and in the outer space,
At least one of the heat diffusion block and the heat sink is fastened using the plate member, the bolt and the nut,
Wherein a contact surface between the thermal diffusion block and the first plate member is provided wider than a first surface and a second surface of the thermoelectric module.

Images