KR102091985B1 - Two door refrigerator using thermoelectric element - Google Patents

Abstract

The present invention relates to a two-door refrigerator using a thermoelectric element, which is characterized by comprising: a case (10) which is opened at one side, and in which a metal housing cooler (15) is mounted; a refrigerating chamber (20) including an upper refrigerating container (21) located at the upper portion on the inside of the housing cooler (15) and a lower refrigerating container (22) located at the lower portion on the inside of the housing cooler (15); a thermoelectric element-using cooling module (40) which is installed on the rear surface of a housing cooler inner wall (15a) in order to cool the housing cooler (15); a heat radiation module (50) which can radiate absorbed heat generated during the process of cooling the housing cooler (15); an upper door (60) which is rotatably installed at one side of the upper portion of the case (10) to open and close the upper refrigerating container (21); and a lower door (70) which is rotatably installed at one side of the lower portion of the case (10) to open and close the lower refrigerating container (22), and has a pocket (75) which enters into and exits from the lower refrigerating container (22) by the rotating movement of the lower door (70) and is provided with an accommodating space upwardly opened. Therefore, refrigeration efficiency can be prevented from deteriorating.

Description

Two-door refrigerator using thermoelectric element

The present invention relates to a thermoelectric element-driven two-door refrigerator, and more specifically, by forming two independent refrigeration spaces on the upper side and the lower side, minimizing the temperature change in the refrigeration space during storage and retrieval of the refrigerated articles. The present invention relates to a two-door refrigerator driven by a thermoelectric element that can be effectively refrigerated.

A thermoelectric device using the Peltier phenomenon is a semiconductor device that generates heat (heating) in the forward junction and absorbs heat (cooling) in the opposite junction when current is applied in one direction. Since these thermoelectric elements can be implemented with low power and ultra-small size, they are used in various small home appliances such as small refrigerators, cosmetic refrigerators, and wine refrigerators. The prior art of a refrigerator using such a thermoelectric element is disclosed in Patent Publication No. 10-2002-0069909.

1 is a view for explaining a conventional thermoelectric element-driven refrigerator. As shown, a conventional refrigerator using a thermoelectric element is combined with one side of the thermoelectric element 2 and the thermoelectric element 2 installed in the refrigerator compartment 1 in which articles such as cosmetics are stored, and inside the refrigerator compartment 1 It includes a first cooler (3) disposed in, and a second cooler (4) which is combined with the other side of the thermoelectric element (2) and disposed outside the refrigerating chamber (1). At this time, a partition wall 5 having a plurality of holes 5a formed inside the refrigerating chamber 1 is prevented from colliding with cosmetics stored in the first cooler 3, and a fan is provided inside the second cooler 4. 4a) is installed to heat the heat transmitted through the cooler 4 to the outside. With this structure, the first cooler 3 absorbs ambient heat by cold heat generated on one side of the thermoelectric element 2 to refrigerate the refrigerating chamber 1, and the second cooler 4 is a thermoelectric element 2 ) Radiates the heat generated from the other side to the outside.

However, in the refrigerator, since the refrigerating compartment 1 has one refrigerating space, when opening or closing the door to store or withdraw certain refrigerated items, hot air from outside flows into the refrigerating compartment 1, and the temperature increases rapidly. , After the door was closed, it took a long time for the temperature of the refrigerating chamber 1 to drop to the refrigerating temperature, and in this process, a change in physical properties of the refrigerated article occurred and the refrigeration efficiency was deteriorated.

The present invention was created to solve the above problems, and is divided into separate upper and lower refrigerating spaces, thereby preventing the temperature of other refrigerating spaces from changing during storage or withdrawal of goods in a specific refrigerating space. By doing so, it is an object of the present invention to provide a thermoelectric element-driven two-door refrigerator capable of preventing deterioration of refrigeration efficiency as a whole.

Another object of the present invention is to provide a thermoelectric element-driven two-door refrigerator that allows the temperature of the lower refrigeration space to quickly decrease to a normal refrigeration temperature when storing and withdrawing items from the lower refrigeration space.

In order to achieve the above object, the thermoelectric element-driven two-door refrigerator according to the present invention,
A case 10 in which a housing cooler 15 made of a metallic material is built as an opening to one side; A refrigerating chamber 20 having an upper refrigerating container 21 located at an inner upper portion of the housing cooler 15 and a lower refrigerating container 22 located at an inner lower portion of the housing cooler 15; A thermoelectric element-driven cooling module 40 installed on a rear surface of the inner wall 15a of the housing cooler 15 to cool the housing cooler 15; A heat dissipation module 50 for dissipating heat absorption generated in the process of cooling the housing cooler 15; An upper door 60 that is rotatably installed on an upper side of the case 10 to open and close the upper refrigerating container 21; And it is installed to be rotatable on the lower side of the case 10 to open and close the lower refrigerated container 22, by the rotation operation of the lower door 70 is entered into the lower refrigerated container 22 and to the upper side Including; a lower door 70 having a pocket 75 in which an open storage space is formed; and the heat dissipation module 50 is a heat dissipation block 51 coupled to the front end portion 42a of the condenser block of the cooling module 40. ), The first and second heat pipes 52 and 52 ′ connected to the heat dissipation block 51 and extending toward the upper side, and heat installed in the heat dissipation block 51 and conducted from the heat dissipation block 51 As to radiate heat conducted by the first and second heat pipes 52 and 52 'connected to the lower cooler 53 for radiating heat and the first and second heat pipes 52 and 52', It characterized in that it comprises a first and second upper cooler (54, 54 ') located on the upper side of the lower cooler (53).

In the present invention, the refrigerating chamber 20 is formed on the inner wall of the upper refrigerating container 21, the upper convection hole 23 exposing the inner wall 15a of the housing cooler, and the lower refrigerating container 22 ) Is formed on the inner wall of the housing cooler further comprises a lower convection hole 24 to expose the inner wall (15a).

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In the present invention, as being formed on the partition wall (25) between the upper refrigerated container (21) and the lower refrigerated container (22), the housing cooler is formed on the partition wall (25) near the inner wall (15a) It further includes a first flow path 81 and a second flow path 82 formed in the partition partition 25 at a position remote from the housing cooler inner wall 15a.

In the present invention, when the temperature in the lower refrigerated container (22) is higher than the set temperature (T0) than the temperature of the upper refrigerated container (21), the cold air in the upper refrigerated container (21) is the lower refrigerated container (22) Further comprising a flow path opening and closing portion 90 to automatically open or close the first flow path 81 so as to flow into.

In the present invention, the first flow path 81 has a shape in which the first long holes 81a are arranged to be spaced apart from each other; The flow path opening and closing portion 90 is a pair of guide blades 91 formed on the bottom of the partition walls 25 on both sides of the first flow path 81 and the guide blades 91 as being supported for reciprocating transfer. The opening and closing plate 92 formed with the second long hole 92a having the same size and separation distance as the long hole 81a and the second long hole 92a overlapping or staggering the first long hole 81a with the opening and closing. Opening / closing operation end 93 for advancing or reversing the plate 92, first temperature sensor 94 installed in the upper refrigeration container 21 to measure the cold air temperature, and installed in the lower refrigeration container 22 It includes a second temperature sensor 95 for measuring the cold air temperature.

In the present invention, the opening / closing operation end 93 includes a connecting bar 93a connected to one side of the opening / closing plate 92, a magnetic bar 93b connected to an end of the connecting bar 93a, The magnet bar (93b) of the guide tube body (93c) that is guided to be guided forward or backward, and the first electromagnet (93d) and the guide tube (93c) are installed to be separated on the front side of the guide tube (93c) And a second electromagnet 93e that is separately installed on the rear side.

According to the present invention, since the refrigerating chamber is composed of the upper and lower refrigerating containers that are independently partitioned, it prevents the temperature of other refrigerating containers from changing during the process of receiving or withdrawing items from a specific refrigerating container, thereby preventing the overall reduction in refrigeration efficiency. It is possible to implement a refrigerator that can.

In addition, by generating air flow from the lower cooler having a plurality of heat sink fins to the first and second upper coolers having a plurality of heat sink fins, the overall volume can be minimized while maximizing the heat dissipation efficiency of the cooling module 40, Accordingly, the size of the refrigerating chamber can be made relatively large.

And by adopting the flow path opening and closing, when the temperature in the lower refrigerated container is higher than the temperature of the upper refrigerated container, the first flow path is opened to induce the cold air of the upper refrigerated container to rapidly flow into the lower refrigerated container. Accordingly, the refrigerating temperature of the lower refrigerating container can be quickly lowered, so that the article accommodated in the pocket 75 can be quickly refrigerated.

1 is a view for explaining a conventional one-door thermoelectric drive type refrigerator,
Figure 2 is a perspective view of a thermoelectric element-driven two-door refrigerator according to the present invention,
3 is a view for explaining that in the refrigerator of FIG. 2, the upper door and the lower door are opened;
4 is a cross-sectional view taken along line IV-IV 'in FIG. 3,
5 is a side cross-sectional view showing the cooling module of FIG. 4,
Figure 6 is a side view showing the heat dissipation module is coupled to the cooling module of Figure 5,
7 is a view for explaining by extracting the pocket installed on the lower door of Figure 3,
8 is a view for explaining the configuration of the flow path opening and closing portion is installed on the lower side of the partition wall of Figure 3 to open and close the first flow path
9 is a cross-sectional view taken along line IX-IX 'of FIG. 8,
Figure 10 is a view for explaining the configuration by extracting the opening and closing operation of Figure 8,
11 is a view for explaining the operation of the flow path opening and closing portion of FIG.

Hereinafter, a thermoelectric element-driven two-door refrigerator according to the present invention will be described in detail with reference to the accompanying drawings.

Hereinafter, what is described as "upper" or "upper" may include not only that which is directly above in contact, but also that which is above in a non-contact manner. Terms such as first and second may be used to describe various components, but components should not be limited by terms. The terms are only used to distinguish one component from other components. Singular expressions include plural expressions unless the context clearly indicates otherwise. Also, when a part “includes” a certain component, this means that other components may be further included, rather than excluding other components, unless otherwise specified. In addition, terms such as "... unit" and "module" described in the specification mean a unit that processes at least one function or operation.

2 is a perspective view of a thermoelectric element-driven two-door refrigerator according to the present invention, and FIG. 3 is a view for explaining that the upper and lower doors are opened in the refrigerator of FIG. 2, and FIG. 4 is IV of FIG. 3 It is a cross-section along the 'IV' line.

As shown, the thermoelectric element-driven two-door refrigerator according to the present invention includes a case 10 in which a housing cooler 15 made of a metal material is embedded as an opening on one side; The housing is formed on the inner wall of the upper refrigeration container (21), the lower refrigeration container (22) located on the inner lower part of the housing cooler (15), and the upper refrigeration container (21) located on the inner upper part of the housing cooler (15). Refrigeration chamber 20 having an upper convection hole 23 exposing the cooler inner wall 15a and a lower convection hole 24 formed on the inner wall of the lower refrigeration container 22 to expose the inner wall 15a of the housing cooler. )and; An insulating cover 30 surrounding the housing cooler 15; A thermoelectric element-driven cooling module 40 installed on a rear surface of the housing cooler inner wall 15a to cool the housing cooler 15; A heat dissipation module 50 for dissipating heat absorption generated in the process of cooling the housing cooler 15; An upper door 60 installed rotatably on one side of the upper portion of the case 10 to open and close the upper refrigerator container 21; A storage space that is rotatably installed on one lower side of the case 10 to open and close the lower refrigeration container 22, and enters the lower refrigeration container 22 by the rotation operation of the lower door 70 and opens to the upper side. A lower door 70 having a pocket 75 formed therein; The first flow path 81 and the housing cooler inner wall 15a formed close to the inner wall 15a of the housing cooler as being formed on the partition wall 25 between the upper refrigerating container 21 and the lower refrigerating container 22 A cold air circulation port 80 having a second flow path 82 formed remotely from the air flow path 80; When the temperature in the lower refrigerated container 22 is higher than the temperature of the upper refrigerated container 21 by a set temperature (T0) or higher, the first flow path so that the cold air of the upper refrigerated container 21 flows into the lower refrigerated container 22. 81) to automatically open or close the flow path opening and closing portion 90; characterized in that it comprises a.

Since the refrigerator of the present invention uses a thermoelectric element as a cooling driving source, it is implemented in light weight and small size, and items for refrigeration are cosmetics, drugs, or beverages.

The housing cooler 15, as shown in FIG. 4, is made of a metal material such as high conductivity aluminum, and has a housing shape that is open toward the upper and lower doors. The housing cooler 15 is cooled by the cooling module 40 to be described later, and the upper and lower refrigerating containers (in the conduction method to directly cool the upper and lower refrigerating containers 21 and 22) located at the upper and lower sides ( 21) The air in the refrigerating space of (22) is cooled.

Refrigerating chamber 20, as shown in Figures 3 and 4, the upper refrigeration container 21 is located on the inner upper portion of the housing cooler 15, and the lower refrigerated container is located on the inner lower portion of the housing cooler 15 (22). Since the upper and lower refrigerated containers 21 and 22 are directly cooled by the housing cooler 15 to cool the stored items, there is no need to use a pump for circulating cold air, and thus a noiseless refrigerator is implemented. do.

Meanwhile, as illustrated in FIG. 4, an upper convection hole 23 exposing the housing cooler inner wall 15a is formed on the inner wall of the upper refrigerator container 21, and the inner wall of the lower refrigerator container 22 is formed. A lower convection hole 24 is formed on the upper side to expose the side wall of the housing cooler 15.

The upper convection hole 23 directly communicates the housing cooler inner wall 15a with the refrigerating space of the upper refrigerating container 21, so that the cold air cooled by the housing cooler 15 directly to the upper side of the upper refrigerating container 21. Supply. Accordingly, since the cool air directly cooled by the housing cooler inner wall 15a is supplied to the upper refrigerated container 21 in a relatively higher space than the lower side, as a result, the lower side and the upper side of the upper refrigerated container 21 It is possible to implement a temperature distribution in which the temperature of is similar.

If the upper convection hole 23 is not formed, the temperature at the upper side of the upper refrigeration container 21 is always higher than the temperature at the lower side, and therefore, a non-uniform temperature distribution is inevitable.

The lower convection hole 24 directly communicates the housing cooler inner wall 15a with the refrigeration space of the lower refrigeration container 21, so that the cool air cooled directly by the housing cooler 15 is upper part of the lower refrigeration container 22. Side. Accordingly, when the lower door 70, which will be described later, is rotated, the outside hot air is introduced into the lower refrigeration container 22 through the lower convection hole 24 even when the external hot air is introduced into the lower refrigeration container 22 by the pocket 75. The cold air to be cooled quickly cools the lower refrigerated container (22).

For reference, the present invention employs a pocket 75 for storing items in the lower door 70, and the pocket 75 is lower when the lower door 70 is rotated to open and close the lower refrigerating container 22. The refrigeration unit 22 enters and exits in a drawer type. Therefore, when the pocket 75 is introduced into the lower refrigerated container 22, the outside room temperature air is pushed by the pocket 75 and flows into the lower refrigerated container 22, and accordingly, the cold air filled in the lower refrigerated container 22 It goes out and the inside of the lower refrigerated container 22 is quickly brought to room temperature. Such a normal temperature state increases the temperature of the article accommodated in the pocket 75 and causes deterioration of the article.

However, in the present invention, by adopting the lower convection hole 24, even if the outside hot air flows into the lower refrigeration container 22 by the pocket 75, the cold air cooled by the housing cooler inner wall 15a is refrigerated. Since it is introduced into the container 22, the lower refrigeration container 22 is rapidly cooled to prevent the temperature of the article from rising.

The insulating cover 30 is embedded in the case 10 while the housing cooler 15 is wrapped, and blocks the housing cooler 15 from directly contacting external air, so that the housing cooler 15 retains cold heat for a long time. .

5 is a side cross-sectional view showing the cooling module of FIG. 4 excerpted.

As shown, the cooling module 40 is for cooling the housing cooler 15, a body 41 having a rectangular body body 41a and a bracket 41b formed at an end of the body body 41a. And, a condenser block having a rear end portion 42b formed with a pair of locking jaws 42c symmetrically formed at the rear edge and a front end portion 42a partially protruding from the front end of the body body 41a when sandwiched by the body 41 42), the body body (41a) is formed to face the inner circumferential surface of the outer side of the condenser block 42 is spaced apart from the inner circumferential side of the body body (41a) and at the same time the jaw end (43a) to which the locking jaw (42c) hangs The plurality of ribs 43 formed, the cooler block 44 coupled to the rear surface of the housing cooler inner wall 15a, and the thermoelectric element 45 in close contact between the condenser block 42 and the cooler block 44, O-ring 46 positioned between the locking jaw 42c and the jaw end 43a in the state of being stuck in the condenser block 42, the body 41 and the condenser And a Luck 42 and the cooler block (44) and thermal element (45) molding the insulating portion 47 which is filled in the space between.

The condenser block 42 has a cube shape as a whole, and is made of aluminum having high thermal conductivity and excellent workability.

The cooler block 44 indirectly connects the thermoelectric element 45 to the rear surface of the housing cooler inner wall 15a.

The thermoelectric element 45 forms a structure in which the cold end 45a generating cold heat and the warm end 45b generating heat are interconnected by the separation end 45c. At this time, the cold end (45a) of the thermoelectric element 45 is in close contact with the condenser block 42, the warm end (45b) is in close contact with the cooler block (44), whereby the cold heat generated in the cold end (45a) is a condenser Conduction is conducted to the block 42, and the heat generated from the thermal stage 45b is conducted to the cooler block 44.

By having a cushion, the O-ring 46 functions to supplement the tolerance gap even when a tolerance gap due to an injection tolerance occurs when the body 41 is injected, and furthermore, the thermoelectric element 45 is attached to the rear end portion 42b. When positioning, guide it so that it is positioned correctly.

The molding insulation portion 47 is implemented by injecting a liquid epoxy between the condenser block 42 and the body body 41a and curing the body, integrating the body 41 with the condenser block 42 and the cooler block 44 By doing so, durability, impact resistance, and moisture resistance can be satisfied, and moisture resistance can be realized by completely surrounding the edges of the thermoelectric element 45. In addition, the molding insulation unit 47 can prevent the body 41 from being excessively cooled by insulating the condenser block 42 and the body 41, thereby preventing sexuality from occurring in the body 41.

FIG. 6 is a side view showing the heat dissipation module coupled to the cooling module of FIG. 5.

As illustrated, the heat dissipation module 50 is connected to the distal end portion 42a of the condenser block of the cooling module 40 by a bolt, and the heat dissipation block 51 connected to the heat dissipation block 51 to extend to the upper side. The first and second heat pipes 52 and 52 ', a lower cooler 53 installed in the heat dissipation block 51 to dissipate heat conducted from the heat dissipation block 51, and the first and second heat pipes ( 52) First and second upper coolers (52 ') connected to (52') to dissipate heat conducted by the first and second heat pipes (52, 52 ') and located on the upper side of the lower cooler (53) ( 54) (54 ').

Since the first and second heat pipes 52 and 52 'transfer heat through evaporation of the internal fluid, the heat transfer speed is about 100 times faster than that of a pipe using only copper or aluminum, and accordingly, the lower cooler 53 The heat absorbed in the first and second upper coolers (54, 54 ') is quickly transferred. The lower cooler 53 is coupled by a bolt to the tip portion 42a of the condenser block of the cooling module 40 inside the case 10, and is made of a metal material having good conductivity, for example, aluminum or stainless steel. It includes a plurality of cooling fins (53a) for increasing the contact area with the air.

The first and second upper coolers 54 and 54 'are connected to the first and second heat pipes 52 and 52' in a state located on the upper side of the lower cooler 53 from the inside of the case 10. do. The first and second upper coolers 54 and 54 'are made of a metal material having good conductivity, for example, aluminum or stainless steel, and include a plurality of cooling fins 54a for increasing the contact area with air.

The first and second upper coolers 54 and 54 'are located on the upper side of the lower cooler 53, and the first and second heat pipes 52 and 52' absorb heat absorbed from the lower cooler 53. Since it conducts to the first and second upper coolers 54 and 54 ', the temperature of the first and second upper coolers 54 and 54' is lower than that of the lower cooler 53. Therefore, since the temperature of the air near the lower cooler 53 is higher than the temperature of the air near the first and second upper coolers 54 and 54 ', the first and second upper coolers from the heat sink fins 53a of the lower cooler 53 ( 54) The flow of air is generated in a direction passing through the heat dissipation fins 54a of 54 ', thereby increasing heat dissipation efficiency.

As described above, the lower cooler 53 and the first and second upper coolers 54 and 54 'maintain the lower temperature in the refrigerating chamber 20, thereby inducing circulation of cold air in the refrigerating chamber to cool the air in the refrigerator. Occurs effectively.

7 is a view for explaining by extracting the pocket installed on the lower door of FIG.

As shown, while the lower door 70 is rotated on the lower side of the case 10, the pocket 75 in which the article is stored is brought in and out of the lower refrigerated container 22. At this time, the article storage space formed inside the pocket 75 is opened to the upper side.

Since the present invention uses a thermoelectric element that is a semiconductor as a driving source, the refrigerator has to be small in size such that it does not become 1 m in height. Therefore, the lower refrigerating container 22 located at the lower side of the upper refrigerating container 21 is from the bottom. It has to be located at a height of about 10cm. Therefore, it is inevitably physically very difficult for the user to directly receive and withdraw the goods in the lower refrigerated container 22.

In order to solve this problem, the lower door 70 of the present invention uses a pocket 75 completely immersed or exited into the lower refrigerating container 22 for refrigeration according to a rotational operation, and also in the pocket 75 It has a shape opened to the upper side for easy storage of the article.

The pocket 75 is provided with a cover 76 that can be opened and closed to the upper side. The cover 76 delays the relatively high external air from flowing into the pocket 75 as much as possible when the pocket 75 is positioned outside the lower refrigeration container 22, and accordingly, of the article accommodated in the pocket 75. Let the refrigeration continue.

On the other hand, the pocket 75 is composed of first and second pockets (75a) (75b) that are independently divided, the cover 76 is a first and second pockets 75a, (75b) to open and close independently, It consists of two covers 76a and 76b. In the case of such a configuration, even if the first pocket 76a is opened to open the first pocket 75a, the second pocket 75b is closed by the second cover 76b, so the first pocket by external air The article accommodated in 75b may remain refrigerated.

8 is a view for explaining the configuration of the flow path opening and closing portion installed on the lower side of the partition bulkhead of FIG. 3 to open and close the first flow path, FIG. 9 is a cross-sectional view along the line IX-IX 'of FIG. 8, and FIG. 8 is a view for explaining the configuration by extracting the opening and closing operation end of FIG.

As shown, the cold air circulation port 80, as shown in Figure 3, the first flow path 81 and the housing cooler formed in the partition partition wall 25 in a position close to the inner wall of the housing cooler (15a) And a second flow path 82 formed in the partition partition wall 25 at a position remote from the inner wall 15a. At this time, the second flow path 82 has a long formed shape and is always open.

The first flow path 81 has a shape in which the first long holes 81a are arranged to be spaced apart from each other, and a plurality of first long holes 81a are simultaneously opened or closed by the flow path opening and closing part 90, which will be described later. Since the first flow path 81 is located close to the inner wall 15a of the housing cooler that is directly cooled by the cooling module 40, the temperature of the first flow path 81 side is the temperature of the second flow path 82 side. It is lower, which means that the cold air density at the first flow path 81 side is greater than the cold air density at the second flow path 82 side.

When the temperature in the lower refrigerating container 22 is higher than the temperature of the upper refrigerating container 21 by a set temperature T0 or higher, the flow opening / closing unit 90 opens the first flow path 81 to cool the upper refrigerating container 21. Is to be quickly introduced into the lower refrigerated container 22 to lower the cold air temperature of the lower refrigerated container 22.

4, 8 and 9, a pair of guide blades 91 and guide blades formed on the bottom of the partition partitions 25 on both sides of the first flow path 81 are provided. The opening / closing plate 92 formed with the second long hole 92a having the same size and separation distance as the first long hole 81a as being reciprocatingly conveyed to the 91, and the second long hole 92a as the first long hole The opening and closing operation stage 93 for advancing or reversing the opening / closing plate 92 to overlap or cross the (81a), and the first temperature sensor 94 installed in the upper refrigeration container 21 to measure the cooling air temperature, It is installed in the lower refrigerated container 22 and includes a second temperature sensor 95 for measuring the cold air temperature.

Opening and closing operation end 93, as shown in Figure 10, the connecting bar 93a connected to one side of the opening and closing plate 92, and the connecting bar 93a and the magnetic bar 93b connected to the end of the , A guide tube 93c in which the magnet bar 93b is guided to be moved forward or backward, a first electromagnet 93d separately installed on the front side of the guide tube 93c, and a rear side of the guide tube 93c It includes a second electromagnet (93e) is installed to be separated.

The opening / closing operation stage 93 adopts independently driven first electromagnet 93d and second electromagnet 93e to advance or reverse the magnet bar 93b connected to the opening / closing plate 92 in a large stroke range. In particular, by reversing the polarity of the power applied to each of the first electromagnet 93d and the second electromagnet 93e, the magnet bar 93b can be moved back and forth with great force.

That is, by the opening / closing operation end 93, as shown in FIG. 8, the first long hole 81a of the first flow path 81 and the second long hole 92a of the opening / closing plate 92 are displaced from each other. When the first flow path 81 is closed, when the power of opposite polarity is applied to the first electromagnet 93d and the second electromagnet 93e, as shown in FIG. 11, the opening / closing plate connected to the magnet bar 93b is shown. As 92 is advanced, the first long hole 81a of the first flow path 81 and the second long hole 92a of the opening / closing plate 92 coincide with each other, and accordingly, the first flow path 81 is opened. And when the power of the opposite polarity is applied to the first and second electromagnets 93d and 93e, the opening / closing plate 92 connected to the magnet bar 93b is reversed, thereby closing the first flow path 81 as shown in FIG. 8. Is to do.

By adopting the flow path opening and closing part 90, when the temperature measured by the second temperature sensor 95 is higher than the temperature at which the first temperature sensor 94 is measured is higher than the set temperature T0, for example, 5 ° C or higher. , The operation signal is generated so that the opening / closing operation stage 93 opens the first flow path 81, and in this case, the cold air cooled by the housing cooler 15 is the upper refrigeration container 21-> the first flow path 81 )-> Lower refrigerated container (22)-> generates a cold air flow circulating in the second flow path (86). This cold air flow proceeds until the temperature of the upper refrigerated container 21 and the lower refrigerated container 22 becomes the same.

As described above, according to the present invention, since the refrigerating chamber 20 is composed of the upper compartment 21 and the lower compartment 22, which are independently partitioned, in the process of receiving or withdrawing items from a particular refrigerator container, the other refrigerator containers It is possible to implement a refrigerator that prevents a change in temperature and thus prevents a decrease in refrigeration efficiency as a whole. In particular, as shown in FIG. 1, it is possible to operate silently by not adopting a configuration such as a blower for refrigeration.

In addition, by generating air flow from the lower cooler 53 having a plurality of radiating fins 53a in the heat dissipation module 50 to the first and second upper coolers 54 and 54 'having a plurality of radiating fins 54a. While minimizing the overall volume, the heat dissipation efficiency of the cooling module 40 can be maximized, and accordingly, the size of the refrigerating chamber 20 can be relatively increased.

And by adopting the flow path opening and closing portion 90, when the temperature in the lower refrigerated container 22 is higher than the temperature of the upper refrigerated container 21 by a set temperature T0 or higher, the first flow path 81 is opened to open the upper refrigerated container 21 ) Can be induced to quickly flow into the lower refrigerated container 22, and accordingly, the refrigeration temperature of the lower refrigerated container 22 can be quickly lowered so that the article accommodated in the pocket 75 can be quickly refrigerated. can do.

The present invention has been described with reference to one embodiment shown in the drawings, but this is only exemplary, and those skilled in the art will understand that various modifications and other equivalent embodiments are possible therefrom.

10 ... Case 15 ... Housing cooler
15a ... Housing cooler inner wall 20 ... Refrigerator compartment
21 ... Upper Refrigerated Container 22 ... Lower Refrigerated Container
23 ... upper convection hole 24 ... lower convection hole
25 ... partition bulkhead 30 ... insulation cover
40 ... cooling module 41 ... body
41a ... body body 41b ... bracket
42 ... condenser block 42a ... tip
42b ... rear end 42c ... locking jaw
43 ... rib 44 ... cooler block
45 ... thermoelectric element 45a ... cold thermal stage
45b ... thermal stage 45c ... separation stage
46 ... O-ring 47 ... Molding insulation part
50 ... heat dissipation module 51 ... heat dissipation block
52, 52 '... 1st, 2nd heat pipe 53 ... Lower cooler
54, 54 '... 1st, 2nd upper cooler 60 ... Upper door
70 ... lower door 75 ... pocket
75a, 75b ... first and second pockets 76 ... cover
76a, 76b ... 1st, 2nd cover 80 ... Cold air circulation
81 ... Euro 1 81a ... Chapter 1
82 ... Euro 2 90 ... Euro Switching
91 ... Guide wings 92 ... Opening and closing plate
92a ... Chapter 2 hole 93 ... Opening and closing operation stage
93a ... connecting bar 93b ... magnetic bar
93c ... Guide tube 93d ... 1st electromagnet
93e ... 2nd electromagnet 94 ... 1st temperature sensor
95 ... 2nd temperature sensor

Claims (7)

A case 10 in which a housing cooler 15 made of a metallic material is built as an opening to one side;
A refrigerating chamber 20 having an upper refrigerating container 21 located at an inner upper portion of the housing cooler 15 and a lower refrigerating container 22 located at an inner lower portion of the housing cooler 15;
A thermoelectric element-driven cooling module 40 installed on a rear surface of the inner wall 15a of the housing cooler 15 to cool the housing cooler 15;
A heat dissipation module 50 for dissipating heat absorption generated in the process of cooling the housing cooler 15;
An upper door 60 that is rotatably installed on an upper side of the case 10 to open and close the upper refrigerating container 21; And
It is installed to be rotatable on the lower side of the case 10 to open and close the lower refrigerated container 22, and enters and exits the lower refrigerated container 22 by the rotation operation of the lower door 70 and opens to the upper side. Includes; lower door 70 having a pocket 75 with a storage space is formed,
The heat dissipation module 50 includes a heat dissipation block 51 coupled to the front end portion 42a of the condenser block of the cooling module 40, and first and second heat pipes connected to the heat dissipation block 51 and extending upwardly. 52, 52 ', a lower cooler 53 that is installed in the heat dissipation block 51 to dissipate heat conducted from the heat dissipation block 51, and the first and second heat pipes 52 and 52 The first and second upper coolers 54 connected to the upper side of the lower cooler 53 as heat dissipated by the first and second heat pipes 52 and 52 ' 54 ') thermoelectric element driven two-door refrigerator, characterized in that it comprises a. According to claim 1, The refrigerating chamber 20,
An upper convection hole 23 formed on an inner wall of the upper refrigerating container 21 to expose the inner wall 15a of the housing cooler,
A thermoelectric element-driven two-door refrigerator, further comprising a lower convection hole (24) formed on the inner wall of the lower refrigerator container (22) to expose the inner wall (15a) of the housing cooler. delete According to claim 1,
As formed on the partition bulkhead 25 between the upper refrigerated container 21 and the lower refrigerated container 22,
The first flow path 81 is formed on the partition partition wall 25 at a position close to the inner wall 15a of the housing cooler, and the second flow path is formed on the partition partition wall 25 at a position remote from the inner wall 15a of the housing cooler. A thermoelectric element-driven two-door refrigerator further comprising (82). The method of claim 4,
When the temperature in the lower refrigerated container 22 is higher than the set temperature (T0) than the temperature of the upper refrigerated container 21,
Thermoelectric element driving type, characterized in that it further comprises a flow path opening and closing portion (90) to automatically open or close the first flow path (81) so that the cold air of the upper refrigerated container (21) flows into the lower refrigerated container (22). 2 door refrigerator. The method of claim 5,
The first flow path 81 has a shape in which the first long holes 81a are arranged to be spaced apart from each other;
The flow path opening and closing portion 90 is a pair of guide blades 91 formed on the bottom of the partition walls 25 on both sides of the first flow path 81 and the guide blades 91 as being supported for reciprocating transfer. The opening and closing plate 92 having the second long hole 92a having the same size and separation distance as the long hole 81a and the second long hole 92a overlapping or staggering the first long hole 81a. Opening / closing operation end 93 for advancing or reversing the plate 92, first temperature sensor 94 installed in the upper refrigeration container 21 to measure the cold air temperature, and installed in the lower refrigeration container 22 It is a thermoelectric element driven two-door refrigerator, characterized in that it comprises a second temperature sensor 95 for measuring the cold air temperature. According to claim 6, The opening and closing operation end 93,
A connecting bar 93a connected to one side of the opening / closing plate 92,
A magnet bar 93b connected to an end of the connecting bar 93a,
A guide tube (93c) in which the magnetic bar (93b) is guided to be guided forward or backward,
A first electromagnet 93d which is separately installed on the front side of the guide tube 93c,
Thermoelectric element driven two-door refrigerator, characterized in that it comprises a second electromagnet (93e) is installed to be separated on the rear side of the guide tube (93c)

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