JP2004233035A - Direct cooling type refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a direct cooling type refrigerator capable of restraining temperature difference between an upper side and a lower side of an inner part of a storage chamber and temperature difference between a central side and a peripheral side thereof to the minimum. <P>SOLUTION: This direct cooling type refrigerator is provided with an outside case 2, an inside case 24 arranged inside the outside case 2 wherein the storage chamber 20 having an opened upper surface is formed and a refrigerant pipe through which a refrigerant flows is attached, a heat insulating material 30 arranged between the inside case 24 and the outside case 2, a door 32 for opening and closing the storage chamber 20, and a blowing means attached on a lower part of the storage chamber 20 or on the door 32 and circulating cooled air inside the storage chamber so that the cooled air on the central side of the storage chamber 20 is raised and the cooled air on the peripheral side of the storage chamber 20 is lowered. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

  The present invention relates to a direct-cooled refrigerator, and more particularly to a direct-cooled refrigerator having an improved cool air flow path structure so as to minimize a difference in internal temperature of a storage room.

Generally, refrigerators use a refrigerant refrigeration cycle consisting of a compressor, a condenser, an expander, and an evaporator to maintain the inside of a storage room such as a freezing room or a refrigerating room at a low temperature. It is divided into cold-cooled refrigerators and direct-cooled refrigerators.
In other words, the intercooled refrigerator is a system in which an evaporator is installed in a place other than the storage room and the storage room is cooled by forcibly circulating cool air with a fan. The storage room is cooled by conduction and natural convection.

  The intercooled refrigerator cools the storage room while the cool air is forcibly circulated, so that the temperature inside the storage room can be uniformly maintained as a whole, but the flow path structure of the cool air is complicated, and there is a possibility of refrigerant leakage. is there. On the other hand, in the direct cooling type refrigerator, since the inside of the storage room is kept at a low temperature by conduction and natural convection, the temperature difference between the central portion and the edge portion of the storage room and the temperature difference between the upper and lower portions are reduced by the intercooling. Although the size of the refrigerator is larger than that of the refrigerator, there is an advantage that the structure is simple and there is almost no possibility of refrigerant leakage.

Therefore, if a blower for forcibly circulating cool air in the storage room is attached to the direct-cooled refrigerator, the temperature difference inside the storage room can be minimized. For example, the kimchi disclosed in Korean Patent Publication No. 10-0302859 is disclosed. There is a refrigerator.
In the kimchi refrigerator, a blast passage is formed in a door for opening and closing the storage room so that cool air is sucked and then discharged, and a blast for forcibly circulating cool air in the storage room inside the blast passage. By installing a motor and a blower fan, the temperature difference in the storage room was minimized, and kimchi and vegetables were stored at a low temperature for a long time.

A bracket for fixing the blower motor is provided in the blower passage of the door so as to be orthogonal to the blower passage.
However, the direct cooling refrigerator according to the related art in which the ventilation passage is formed and the ventilation motor and the ventilation fan are mounted as described above, the flow of the cool air in the storage room circulates only at the edge of the storage room. There is a problem that a temperature difference occurs between the center side and the edge portion.

In addition, since the blower motor and the blower fan are arranged in a line with respect to the blower passage, and a bracket for fixing the blower motor is arranged so as to be orthogonal to the blower passage, the flow path resistance and noise increase. There was also a problem of doing.
Further, since the blower motor and the blower fan are mounted on the door, the weight of the door increases, the opening / closing operation of the door is not smooth, and the energy efficiency is low because the heat insulation performance of the door is deteriorated. There was a problem.
Republic of Korea Registration Patent Publication No. 10-0302859

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems of the related art, and provides a direct-cooled refrigerator capable of uniformly maintaining a temperature at an upper portion and a lower portion and a temperature at a center and an edge portion in a storage room. Especially for that purpose.
It is another object of the present invention to provide a direct-cooled refrigerator in which the flow resistance and noise of the cool air are minimized.

  In order to achieve the above object, a direct-cooled refrigerator according to the present invention includes an outer case; a refrigerant pipe disposed inside the outer case, having a storage chamber having an open upper surface and through which a refrigerant flows. A heat insulating material disposed between the inner case and the outer case; a door that opens and closes the storage room; a cold air mounted at a lower portion of the storage room and located at a center side of the storage room. And air blowing means for circulating the cool air in the storage chamber so that the cool air at the edge of the storage chamber is lowered.

  The direct-cooled refrigerator according to the present invention further includes an outer case; an inner case provided inside the outer case, the storage case having an open upper surface, and a refrigerant pipe through which a refrigerant flows is mounted. A heat insulating material formed between the inner case and the outer case; a door for opening and closing the storage room; a cool air at the center of the storage room being mounted on the door and rising at an edge of the storage room; And a blowing means for circulating the cool air in the storage chamber so that the cool air is lowered.

  In addition, the direct cooling refrigerator according to the present invention includes: an outer case; a plurality of storage chambers disposed inside the outer case, each having a storage chamber with an open upper surface, and each having a refrigerant pipe through which a refrigerant flows. An insulating case disposed between the plurality of inner cases and the outer case and between the plurality of inner cases; a plurality of doors for opening and closing each of the storage chambers; A blower mounted on at least one of the plurality of doors to circulate cool air in the storage chamber such that cool air at the center of the storage chamber is raised and cool air at an edge of the storage chamber is lowered; At least one of the plurality of doors has an air inlet formed at a center thereof so that cold air in the storage chamber is sucked and discharged after being sucked, and a plurality of air outlets are formed at an edge. Is formed, said air Air passage communicating with the inlet and an air discharge port, characterized in that is configured to include the formed flow path guide.

The direct cooling refrigerator according to the present invention has the following advantages.
1) The direct cooling refrigerator according to the present invention stores the air using a blower that circulates the cool air in the storage room such that the cool air at the center of the storage room is raised and the cool air at the edge of the storage room is lowered. Since the cold air in the room is circulated, the temperature between the center side and the edge portion in addition to the temperature between the upper side and the lower side in the storage chamber can be maintained uniformly.

2) The direct-cooled refrigerator according to the present invention is disposed at a lower portion inside the storage room, has an air discharge port formed at the center, and has a plurality of air intake ports formed at an edge thereof. A cooling air is further inhaled from the edge of the storage chamber and is concentrated and discharged through the center of the storage chamber because the airflow path further includes a flow path guide formed with a discharge port and an air intake port. As a result, the flow of the cool air is smooth. In addition, there is an advantage that the inside of the storage room is cooled uniformly.
3) The flow path guide is formed in a polygonal shape, and the air suction port is formed at the center or the top of the edge of the flow path guide. Has the advantage of being uniformly circulated.

4) The flow path guide has a waterproof rib protruding from an upper peripheral edge of the air discharge port so as to prevent liquid from entering from the air discharge port, and prevents liquid from entering from the air suction port. In addition, since the waterproof ribs are also formed to protrude from the upper peripheral edge of the air inlet, there is an advantage that the inside of the storage chamber can be held cleanly.
5) Since the flow path guide is made of a heat transfer member, there is an advantage that deterioration of the cooling performance due to the flow path guide can be prevented.

6) The direct-cooled refrigerator according to the present invention has an advantage in that a deodorant is further provided at the air discharge port, so that food odors and the like in the storage room can be efficiently deodorized.
7) The blower is composed of a blower motor provided at the center of the inner bottom of the inner case and a blower fan provided on a rotating shaft of the blower motor, so that the cool air circulated is There is an advantage that the direction discharge is easy and the circulating cool air can radiate heat from the blower motor.

  8) The blower is disposed below the center of the bottom of the inner case, and has a blower motor having a rotating shaft protruding into the storage chamber through an opening formed in the inner case; Since it is composed of a blower fan mounted on the motor, the flow resistance of the cool air circulating in the flow path guide is minimized, the blowing performance is improved, and when the circulated cool air hits the blower motor, There is an advantage that possible noise is prevented and vibration and noise are minimized by being buffered by the heat insulating material.

  9) The blower is disposed in a machine room formed at a lower portion of the outer case, and a blower motor having a rotating shaft protruding into the storage chamber through the heat insulating material and the inner case; Since it is composed of a blower fan provided on the rotating shaft, the flow resistance of the cool air circulating in the flow path guide is minimized, the blowing performance is improved, and the circulated cool air hits the blower motor. There is an advantage that noise which may sometimes occur can be prevented, and the blower motor has high heat dissipation performance.

10) In the direct cooling refrigerator according to the present invention, a blower for circulating cool air in the storage room such that the cool air at the center side of the storage room is raised and the cool air at the edge of the storage room is lowered is provided at the door. The door is provided with a flow path guide formed with an air inlet at the center, a plurality of air outlets at an edge, and a ventilation passage communicating with the air inlet and the air outlet. Since it is installed, the cool air in the storage room circulates through the inside of the storage room and the door, and has an advantage that the temperature between the center and the edge in addition to the temperature between the upper and lower sides of the storage room is uniformly maintained. .
11) Since the flow path guide is made of a heat insulating member, there is an advantage that the heat insulating performance of the door can be prevented from lowering.

Hereinafter, embodiments of the present invention capable of realizing the above objects will be described with reference to the accompanying drawings.
FIG. 1 is an internal configuration diagram of a first embodiment of a direct cooling refrigerator according to the present invention.
In the first embodiment of the direct cooling refrigerator according to the present invention, as shown in FIG. 1, a storage room 20 having an open upper surface is formed inside an outer case 2 forming an outer shape, and a refrigerant through which a refrigerant flows. An inner case 24 to which the pipe 22 is attached is provided, and a heat insulating material 30 is provided between the outer case 2 and the inner case 24.

A top cover 31 surrounding the upper end of the heat insulating material 30 is disposed at the upper end of the outer case 2 and the upper end of the inner case 24.
A machine chamber 3 is formed at a lower portion of the outer case 2, and a compressor 4 for compressing the evaporated refrigerant to a high temperature and a high pressure while passing through the refrigerant pipe 22 in the machine chamber 3. A condenser 5 in which the compressed refrigerant is condensed by heat exchange with the surroundings, and an expansion mechanism 6 for expanding the refrigerant to a low temperature and a low pressure so that the refrigerant condensed in the condenser 5 is easily evaporated are provided. You.
The condenser 5 includes a refrigerant pipe 5a through which the refrigerant passes, and an electrothermal metal member 5b to which the refrigerant pipe 5a is fixed.

The inner case 24 is formed of a rectangular box having an open upper surface and an inner portion, the inside of which is the storage chamber 20, and facilitates heat conduction between the refrigerant passing through the refrigerant pipe 22 and the air in the storage chamber 20. It is made of a heat transfer metal member such as aluminum, and forms an evaporator together with the refrigerant pipe 22.
The upper end of the inner case 24 is bent so as to surround the upper end of the outer case 2.
The heat insulating material 30 is foamed and embedded between the outer case 2 and the inner case 24 so as to wrap both side surfaces and the bottom surface of the inner case 24.

In the direct cooling refrigerator, a door 32 for opening and closing the upper surface of the storage room 4 is attached.
The door 32 is connected to the outer case 2 by a hinge 14, and a heat insulating material 16 is embedded inside the door 32, and a packing for preventing cold air leakage between the door 32 and the storage room 20 is provided on an edge of a bottom surface thereof. 38 are deposited.
On the other hand, in the direct cooling refrigerator, the cool air in the storage room 20 is three-dimensionally circulated such that the cool air at the center of the storage room 20 is raised and the cool air at the edge of the storage room 20 is lowered. It further includes a blower 40 and a flow path guide 50 for guiding the cool air when blowing the cool air by the blower 40.

The blower 40 includes a blower motor 42 provided at the center of the bottom inside the inner case 24 and a blower fan 44 mounted on a rotating shaft 43 of the blower motor 42.
The flow path guide 50 is formed at a lower portion in the inner case 24. An air outlet 52 is formed at the center, and a plurality of air inlets 54 are formed at an edge. An air passage 56 communicating with the air inlet 52 and the air inlet 54 is formed.
The flow path guide 50 may be made of a plastic injection material, but may be made of a heat transfer metal member such as aluminum having high heat conductivity so as to facilitate heat transfer through the bottom of the inner case 24. preferable.

In addition, it is preferable that the upper surface of the flow path guide 50 is flat so that the storage container A in which foods such as kimchi and vegetables are stored is placed.
On the other hand, it is preferable that the direct cooling refrigerator is provided with a deodorant 57 for deodorizing odors of foods and the like in the storage room 20. The deodorant 57 is used for deodorizing cold air discharged from the air discharge port 52. It is preferable to provide the air discharge port 52 at the air outlet.

FIG. 2 is a plan view showing an example of a storage room and a flow path guide in the first embodiment of the direct cooling refrigerator according to the present invention, and FIG. 3 is a first embodiment of the direct cooling refrigerator according to the present invention. It is a bottom view which shows an example of the channel guide in FIG.
Although the flow path guide 50 may be formed in a circular shape, as shown in FIGS. 2 and 3, it is preferable that the flow path guide 50 be formed in a polygonal shape, in particular, a square shape, corresponding to the internal shape of the inner case 24. .
Here, the air discharge port 52 is formed larger than the blower motor 42 and the blower fan 44 so as not to interfere with the blower motor 42 and the blower fan 44.

The plurality of air inlets 54 are provided so that the cool air at the edge of the storage chamber 20 is sucked downward through the central part of the front, rear, left and right surfaces of the flow guide 50 when the blower fan 44 rotates. Each of the 50 edges is formed at the center of the edge.
The air passage 56 is formed on the bottom surface of the flow guide 50 so that the cool air sucked downward from each of the air inlets 54 is collected at the center and then discharged upward from the air outlet 52. A cross is formed so as to communicate with each of the air discharge port 52 and the air suction port 54.
An unexplained reference numeral 58 is a discharge port waterproof rib protrudingly formed on the upper peripheral edge of the air discharge port 52 so as to prevent the liquid from entering the air discharge port 52 in the flow path guide 50. Reference numeral 59 denotes an inlet waterproof rib formed on the upper peripheral edge of the air inlet 54 so as to prevent liquid from entering the air inlet 54.

Next, the operation of the first embodiment of the direct-cooled refrigerator according to the present invention thus configured will be described.
First, when the compressor 4 is driven, the high-temperature and high-pressure gas refrigerant compressed by the compressor 4 is condensed by heat exchange with external air while passing through the refrigerant pipe 5a of the condenser 5, and the expansion is performed. The refrigerant is expanded into a low-temperature and low-pressure refrigerant that evaporates easily while passing through the mechanism 6, absorbs the heat of the storage chamber 20 while passing through the refrigerant pipe 22 constituting the evaporator, is evaporated, and is circulated again to the compressor 4.
Then, when the blower motor 42 is driven, the blower fan 44 generates a blown air, and the cool air at the edge of the storage room 20 is blown downward along the center of the front, rear, left and right inner surfaces of the inner case 24. Thus, the air is sucked into each of the air suction ports 54 of the flow path guide 50.

The cool air sucked into each of the air suction ports 54 of the flow path guide 50 is guided along the air blowing passage 56 and gathers at a lower portion of an air discharge port 52 which is a lower center of the storage chamber 20, and subsequently, the air is cooled. The liquid is discharged upward through the discharge port 52 toward the upper center of the storage chamber 20.
The cool air discharged toward the upper center of the storage room 20 cools the center side of the storage room 20 while passing through the center side of the storage room 20, and hits the center of the bottom surface of the door 32.
The cool air hitting the center of the bottom surface of the door 32 spreads back and forth, left and right, cools the upper part of the storage room 20, and is guided along the bottom surface of the door 32 to the edge of the storage room 20, after which the inner case 24 is cooled. The air is blown downward along the center of the front, rear, left and right inner surfaces, and is sucked into the air suction port 54 of the flow path guide 50.

That is, the cool air in the storage room 20 circulates between the edge, the lower portion, the center, and the upper portion of the storage room 20 to maintain the internal temperature of the storage room 20 as a whole.
On the other hand, the cool air in the storage room 20 passes through the deodorant 57 when discharged upward from the air discharge port 52 of the flow path guide 50, so that the smell of food or the like adhering to the deodorant 57 is deodorized. .
On the other hand, the present invention is not limited to the above embodiment, and various cool air circulation channels can be applied depending on the position of the air intake port of the channel guide 50 and the shape of the air passage.

FIG. 4 is a plan view showing another example of the storage room and the flow path guide in the first embodiment of the direct-cooled refrigerator according to the present invention, and FIG. It is a bottom view showing other examples of a channel guide in an example.
As shown in FIGS. 4 and 5, the flow path guide 50 'is formed in a polygonal shape, particularly a quadrangular shape. An air discharge port 52' is formed in the center of the flow path guide 50 '. A mouth 54 'is formed.

A plurality of air inlets 54 'are formed symmetrically with a line connecting the apex of the flow guide 50' and the air outlet 52 'interposed therebetween.
Further, a ventilation passage 56 'is formed on the bottom surface of the flow path guide 50' so that the air discharge port 52 'and the air suction port 54' communicate with each other.
The air passage 56 ′ is formed so that a first air passage 56 a ′ formed in a cross shape on the bottom surface of the flow path guide 50 ′ and an end of the first air passage 56 a ′ communicate with each other. And a second ventilation passage 56b 'formed in a square shape along the bottom edge of the guide 50'.

  When the channel guide 50 ′ configured as described above is attached to the lower portion inside the storage room 20, the cool air at the edge of the storage room 20 is blown downward along the four corners of the inner case 24. The cold air is sucked into each of the air suction ports 54 ′ of the flow path guide 50 ′, and the sucked cool air is guided along the second air passage 56 b ′ and the first air passage 56 a ′. Are collected at the lower portion of the air discharge port 52 ′, and then discharged upward from the air discharge port 52 ′ toward the upper center of the storage room 20.

The cool air discharged toward the upper center of the storage chamber 20 cools the center of the storage chamber 20 while passing through the center of the storage chamber 20, and hits the center of the bottom surface of the door 32.
The cool air hitting the center of the bottom surface of the door 32 spreads back and forth, right and left, cools the upper part of the storage room 20, and is guided to the edge of the storage room 20 along the bottom surface of the door 32, and then returns to the inner case. The air is blown downward along the four corners 24 and is sucked into the air suction port 54 'of the flow path guide 50'.
That is, the cool air in the storage room 20 circulates between the edge, the lower portion, the center, and the upper portion of the storage room 20 to maintain the internal temperature of the storage room 20 as a whole.

FIG. 6 is an internal configuration diagram of a second embodiment of the direct cooling refrigerator according to the present invention.
In the second embodiment of the direct cooling refrigerator according to the present invention, since the configuration other than the blower is the same as that of the first embodiment, the same reference numerals are used for the same configuration as the first embodiment, and the detailed description thereof will be omitted. It shall be omitted.
The blower 100 of the present embodiment is disposed below the center of the bottom of the inner case 24, and the rotating shaft 101 passes through an opening 24 a formed in the center of the bottom of the inner case 24, and And a blower fan 104 mounted on a rotating shaft 101 of the blower motor 102.

Here, it is preferable that the blower motor 102 is wrapped and fixed by the heat insulating material 30 below the inner case 24.
In the blower 100 of the present embodiment, since the blower motor 102 is provided outside the inner case 24 without being provided inside the flow guide 50, the flow of the cool air passing through the flow guide 50 is reduced. Road resistance is minimized, ventilation performance is improved, and noise that can be generated when circulating cool air hits the ventilation motor 102 is prevented, and vibration and Noise is minimized.

FIG. 7 is an internal configuration diagram of a third embodiment of the direct cooling refrigerator according to the present invention.
The third embodiment of the direct cooling refrigerator according to the present invention has the same configuration as the first embodiment except for the blower, so that the same reference numerals are used for the same configurations as the first embodiment, and the detailed description thereof will be omitted. Omitted.
The blower 110 of the present embodiment is disposed in the machine room 3 formed below the outer case 2, and the rotating shaft 111 is provided with an opening hole 24 a formed in the center of the bottom of the heat insulating material 30 and the inner case 24. It comprises a blower motor 112 which penetrates and protrudes into the storage chamber, and a blower fan 114 which is mounted on a rotating shaft 111 of the blower motor 112.

It is preferable that the blower motor 112 is mounted in the machine room so as to be radiated by air in the machine room, and is fixed to a lower end of the heat insulating material 30.
The blower 110 of the present embodiment is disposed inside the machine room 3 without being provided on the flow path of the cool air through which the blow motor 112 is circulated, so that the flow resistance of the cool air circulating through the flow path guide 50 is reduced. Is minimized, the air blowing performance is improved, noise that may be generated when circulating cool air hits the air blowing motor 112 is prevented, and the heat radiation performance of the air blowing motor 112 is enhanced.

FIG. 8 is an internal configuration diagram of a fourth embodiment of a direct cooling refrigerator according to the present invention.
As shown in FIG. 8, the fourth embodiment of the direct-cooled refrigerator according to the present invention has the same configuration as the first embodiment except for the blower, the flow path guide, and the door. The same reference numerals are used for the configuration, and a detailed description thereof will be omitted.
In this embodiment, the blower 120 is not installed at the lower portion inside the storage room 20 as in the above-described embodiments and the like, but is installed at a door 130 that opens and closes the storage room 20.

That is, the blower 120 of the present embodiment is provided at the center of the door 130 and has a blower motor 122 having a rotation shaft 121 protruding downward, and a blower fan 124 provided on the rotation shaft 121 of the blower motor 122. It is composed of
In addition, the door 130 is provided with a flow path guide 140 for guiding the intake and discharge of cool air.
That is, the door 130 includes a door case 132 forming an outer shape, a heat insulating material 134 in the door case 132, and a flow path guide 140 below the heat insulating material 134.

The flow path guide 140 has an air inlet 142 formed at the center, a plurality of air outlets 144 formed at an edge, and an air passage 146 communicating with the air inlet 144 and the air outlet 144. .
The passage guide 140 is preferably made of the same material as the heat insulating material 134 for heat insulation inside the storage chamber 20.
On the other hand, the direct cooling refrigerator is provided with a deodorant 150 for deodorizing food odor and the like in the storage room 20, and the deodorant 150 is included in the cool air sucked upward through the air inlet 142. It is preferable that the air suction port 142 is provided at the air suction port 142 so as to remove odor.

FIG. 9 is a bottom view showing an example of a door and a flow path guide of a fourth embodiment of the direct cooling refrigerator according to the present invention, and FIG. 10 is a bottom view showing a fourth embodiment of the direct cooling refrigerator according to the present invention. It is a top view which shows an example of a flow path guide.
The flow path guide 140 may be formed in a circular shape, but is preferably formed in a polygonal shape, in particular, a square shape as shown in FIGS. 9 and 10 corresponding to the internal shape of the inner case.
The air inlet 142 is formed larger than the blower motor 122 and the blower fan 124 so as not to interfere with the blower motor 122 and the blower fan 124.

The plurality of air outlets 144 are formed such that the cool air sucked from the center of the storage chamber 20 when the blower fan 124 rotates is discharged downward through the center of the front and rear and left and right surfaces of the flow path guide 140. It is formed at the center of the edge of the channel guide 140.
The air passage 146 is formed in the flow path guide 140 such that the cool air sucked upward through the air inlet 142 is dispersed in four directions of front, rear, left and right, and then discharged downward from the air outlet 144. The upper surface is formed in a cross shape so as to communicate with the air outlet 142 and the air inlet 144, respectively.

Next, the operation of the fourth embodiment of the direct-cooled refrigerator according to the present invention will be described.
First, the door 130 is opened to put the storage container A into the storage room 20, and then the door 130 is closed.
When the blower motor 122 is driven, the blower fan 124 generates a blown air, and the cool air at the center of the storage room 20 is blown upward and is sucked through the air inlet 142 of the flow guide 140. The cool air thus sucked is dispersed in all directions along the air passage 146, and the dispersed cool air is blown downward from each of the air discharge ports 144, and is centrally located in the front, rear, left, and right inner surfaces of the inner case 24. Is blown downward along.

The cool air blown downward along the center of the front, rear, left and right inner surfaces of the inner case 24 collides with the bottom of the inner case 24 and then gathers in the lower center of the inside of the storage room 20, and again, the storage room 20. After cooling the center side of the storage room 20 while being blown upward toward the center upper side of the storage chamber 20, the air is sucked through the air suction port 142 of the flow path guide 140.
In other words, the cool air inside the storage room 20 circulates through the center of the storage room 20, the inside of the door 130, the edge of the storage room 20, and the lower portion of the storage room 20, so that the internal temperature of the storage room 20 can be reduced. Is maintained uniformly.

FIG. 11 is a bottom view showing another example of the door and the flow guide in the fourth embodiment of the direct cooling refrigerator according to the present invention, and FIG. 12 is a fourth embodiment of the direct cooling refrigerator according to the present invention. It is a top view showing other examples of a channel guide in an example.
As shown in FIGS. 11 and 12, the flow guide 140 'is formed in a polygonal shape, particularly a quadrangle, and an air inlet 142' is formed in the center of the flow guide 140 '. An air outlet 144 'is formed at each apex of the edge of 140'.

Also, a plurality of the air inlets 144 'are formed symmetrically with a line connecting the apex of the flow path guide 140' and the air inlet 144 'interposed therebetween.
An air passage 146 'is formed on the upper surface of the flow guide 140' so that the air inlet 142 'and the air outlet 144' communicate with each other.
The air passage 146 ′ is formed so that the first air passage 146 a ′ formed in a cross shape on the upper surface of the flow guide 140 ′ and the end of the first air passage 146 a ′ communicate with each other. A second air passage 146b 'formed in a square shape along the upper edge of the guide 140'.

  When the flow path guide 140 ′ having the above-described configuration is provided on the door 130, the cool air at the center of the storage chamber 20 is blown upward and is sucked through the air suction port 142 ′ of the flow path guide 140 ′. You. The cool air thus sucked is guided to the first air passage 146a 'and dispersed in the front, rear, left and right directions of the flow path guide 140', and the dispersed cool air is guided to the second air passage 146b '. After moving to the apex portion of the flow path guide 140 ′, the air is discharged from each of the air discharge holes 144 ′ and is blown downward along the corner portion of the inner case 24.

The cool air blown downward along the corners of the inner case 24 collides with the bottom of the inner case 24, and then gathers at the center of the lower inside of the storage room 20, again toward the upper center of the storage room 20. After cooling the center side of the storage room 20 while being blown upward, the air is circulated to the air inlet 142 ′ of the flow path guide 140 ′.
In other words, the cool air in the storage room 20 circulates through the center of the storage room 20, the inside of the door 130, the edge of the storage room 20, and the lower portion of the storage room 20, so that the internal temperature of the storage room 20 can be totally controlled. Is maintained uniformly.

FIG. 13 is an internal configuration diagram of a fifth embodiment of the direct cooling refrigerator according to the present invention.
In the fifth embodiment of the direct-cooled refrigerator according to the present invention, as shown in FIG. 13, storage chambers 204 and 206 each having an open upper surface are formed inside an outer case 202 forming an outer shape, and a refrigerant is provided. A plurality of inner cases 212 and 214 to which the flowing refrigerant pipes 208 and 210 are attached are disposed, between the outer case 202 and each of the plurality of inner cases 212 and 214, and between the plurality of inner cases 212 and 214. A heat insulating material 216 is embedded between the two.

A top cover 217 surrounding the upper end of the heat insulating material 216 is provided at the upper end of the outer case 202 and the upper ends of the inner cases 212 and 214.
A machine chamber 218 is formed at a lower portion of the outer case 202. Inside the machine chamber 218, a compressor 220 that compresses the evaporated refrigerant to a high temperature and a high pressure while passing through the refrigerant pipes 208 and 210, A condenser 222 in which the refrigerant compressed by the compressor 220 is condensed by heat exchange with the surroundings; and an expansion in which the refrigerant is expanded to a low temperature and a low pressure so that the refrigerant condensed in the condenser 222 is easily evaporated. A mechanism 224 is provided.

The condenser 222 includes a refrigerant pipe 222a through which the refrigerant passes, and a heat transfer metal member 222b to which the refrigerant pipe 222a is fixed.
The refrigerant pipes 208 and 210 may be connected in series. However, it is preferable that the refrigerant pipes 208 and 210 are connected in parallel so that sufficient cooling is performed in the respective storage chambers 204 and 206. When connected, the refrigerant evaporated while passing through each of the refrigerant pipes 208 and 210 is combined, then flows into the compressor 220 and is compressed, and the refrigerant expanded by the expansion mechanism 224 is dispersed. And flows into the respective refrigerant pipes 208 and 210.

The inner cases 212 and 214 are formed in the shape of a square tube having an open upper surface and an inner portion, and the inside thereof is the storage chambers 204 and 206, and the refrigerant passing through the refrigerant pipes 208 and 210 and the inside of the storage chambers 204 and 206 are formed. It is made of a heat transfer metal member such as aluminum so as to facilitate the heat conduction of air, and forms an evaporator together with the refrigerant pipes 208 and 210.
The heat insulating material 216 is foamed and embedded between the outer case 202 and the inner cases 212 and 214 so as to surround the side and lower surfaces of the inner cases 212 and 214, respectively.

  In the direct cooling refrigerator of the present embodiment, a plurality of doors 226 and 228 are attached to the upper portions of the storage chambers 204 and 206 so as to be openable and closable, respectively. Blowers 230 and 232 for circulating cool air in the storage chambers 204 and 206 such that cool air at the center of the storage chambers 202 and 206 is raised and cool air at edges of the storage chambers 204 and 206 is lowered. Air inlets 234 and 236 formed at the center and a plurality of air outlets 238 and 240 formed at the edges of the storage chambers 204 and 206 for sucking and discharging the cool air; , 236 and flow guides 246, 248 formed with air passages 242, 244 communicating with the air discharge ports 238, 240.

That is, each of the doors 226 and 228 includes a door case 250 and 252 forming an outer shape, heat insulating materials 254 and 256 inside the door cases 250 and 252, and a flow path below the heat insulating materials 254 and 256, respectively. Guides 246 and 248 are provided.
Each of the blowers 230 and 232 is disposed at the center of each of the doors 226 and 228, and the respective blow shafts 262 and 264 with the respective rotation shafts 258 and 260 protruding downward, and the respective blower motors 262 and 264. And the blowers 266 and 268 provided on the rotation shafts 258 and 260 of FIG.
The flow guides 246 and 248 are preferably made of a heat insulating material for heat insulation inside the storage chambers 204 and 206.

On the other hand, the direct cooling refrigerator is provided with deodorants 270 and 272 for deodorizing odors of foods and the like in the respective storage rooms 202 and 206. The deodorants 270 and 272 are provided with the flow path guides 246 and 248, respectively. The flow guides 246 and 248 are preferably installed at the respective air inlets 234 and 236 so that the odor in the cold air sucked upward through the air inlets 234 and 236 can be deodorized.
An unexplained reference numeral 280 is a back cover attached to the back of the machine room 218, and an unexplained reference numeral 282 is a ventilation hole formed in the back cover 280.

FIG. 14 is a bottom view showing an example of a plurality of doors and flow path guides in a fifth embodiment of the direct cooling refrigerator according to the present invention, and FIG. 15 is a fifth embodiment of the direct cooling refrigerator according to the present invention. It is a top view showing an example of a plurality of channel guides in an example.
Each of the flow path guides 226 and 228 may be formed in a circular shape, but may be formed in a polygonal shape, particularly a rectangular shape as shown in FIGS. 14 and 15 corresponding to the internal shape of the inner case. preferable.

Each of the air intake ports 234 and 236 is formed larger than the blower motors 262 and 264 and the blower fans 266 and 268 so as not to interfere with the blower motors 262 and 264 and the blower fans 266 and 268.
The plurality of air discharge ports 238 and 240 are arranged such that the cool air sucked from the center of the storage chambers 204 and 206 when the blower fans 266 and 268 rotate is positioned at the center of the front / rear and left / right surfaces of the flow path guides 246 and 248. The flow guides 246 and 248 are formed at the center of the edges of the flow guides 246 and 248 so as to be discharged downward.

Then, the cooling air sucked upward through the air inlets 234 and 236 is dispersed in the front, rear, left and right directions, and is then discharged downward through the air outlets 238 and 240. On the upper surfaces of the flow path guides 246 and 248, a cross shape is formed so as to communicate with the air suction ports 234 and 236 and the air discharge ports 238 and 240, respectively.
Next, the operation of the fifth embodiment of the direct-cooled refrigerator according to the present invention will be described.
First, the doors 226 and 228 are opened to put the storage container A into the storage chambers 204 and 206, and then the doors 226 and 228 are closed.

  When each of the blower motors 262 and 264 is driven, each of the blower fans 266 and 268 generates a blown air, and the cool air at the center of each of the storage chambers 204 and 206 is blown upward to flow through the flow path guide. The air is sucked through the air inlets 234 and 236 of the air conditioners 246 and 248, respectively. The cool air thus sucked is guided to each of the ventilation passages 242 and 244 and dispersed in four directions, and the dispersed cool air is discharged from each of the air discharge ports 238 and 240 to each of the internal cases 212 and 214. The air is blown downward along the center of the front, rear, left and right inner surfaces.

The cool air blown downward along the center of the front / rear and left / right inner surfaces of each of the inner cases 212 and 214 hits the bottom of each of the inner cases 212 and 214, and then the inside of each of the storage chambers 204 and 206. After gathering at the center of the lower part and cooling the central part of each of the storage chambers 204 and 206 while being blown upward again toward the upper central part of each of the storage chambers 204 and 206, the air in the flow path guides 246 and 248 becomes Circulated to the inlets 234, 236.
That is, the cool air in the storage chambers 204 and 206 respectively circulates through the center of the storage chambers 204 and 206, the inside of the doors 226 and 228, the edges and the lower parts of the storage chambers 204 and 206, respectively. To keep the internal temperature uniformly.

FIG. 16 is a bottom view showing another example of a plurality of doors and flow path guides of the fifth embodiment of the direct cooling refrigerator according to the present invention, and FIG. It is a top view showing other examples of a channel guide of a 5th example.
As shown in FIGS. 16 and 17, the flow guides 246 'and 248' are formed in a polygonal shape, particularly a quadrangle, and the air intake ports 234 'and 236 are provided at the center of the flow guides 246' and 248 '. 'Is formed.

The flow guides 246 ′ and 248 ′ have first air outlets 238 ′ and 240 ′ formed at the apexes of the edges of the flow guides 246 ′ and 248 ′, respectively. A second air outlet 238 ", 240" is formed between the vertices at the edge facing 228.
The first air outlets 238 'and 240' are arranged in a symmetrical manner with a line connecting the tops of the flow guides 246 'and 248' and the air inlets 234 'and 236' interposed therebetween. It is formed.
The plurality of second air discharge ports 238 "and 240" are formed apart from each other.

FIG. 18 is a perspective view showing a flow of cool air when cool air is discharged by another example of the flow path guide of the fifth embodiment of the direct cooling refrigerator according to the present invention.
Generally, in a direct-cooled refrigerator in which a plurality of the inner cases 212 and 214 are mounted, the plurality of the inner cases 212 and 214 are compared with each other in comparison with a portion where each of the inner cases 212 and 214 and the outer case 202 face each other. Are relatively excellent in heat insulation performance, and especially in the region where the inner cases 212 and 214 face each other, the central portion in the front-rear direction shows the best heat insulation performance.

  In other words, each of the storage chambers 204 and 206 has the lowest temperature near the center in the front-rear direction of the portion where the plurality of inner cases 212 and 214 face each other than the other portions. The air discharge ports 238 ", 240" rapidly circulate cool air near the center in the front-rear direction of the portion where the plurality of inner cases 212, 214 face each other, so that the cool air temperature of the storage chambers 204, 206 is entirely reduced. Make sure it is kept even.

17, the air inlets 234 ', 236', the first air outlets 238 ', 240', and the second air outlet 238 are provided on the upper surfaces of the flow guides 246 ', 248', as shown in FIG. The air passages 242 'and 244' are formed so that "" and "240" communicate with each other.
The air passages 242 ′ and 244 ′ have first air passages 242 a ′ and 244 a ′ formed in a cross shape on the upper surfaces of the flow path guides 246 ′ and 248 ′, respectively. And second air passages 242b 'and 244b' formed in a square shape along the upper surface edge of the flow path guides 246 'and 248' so that the ends of the air passages communicate with each other.

  When the flow path guides 246 ′ and 248 ′ configured as described above are provided in each of the doors 226 and 228, the cool air at the center side of each of the storage chambers 204 and 206 is blown upward to blow the flow path guide 246. ', 248' are drawn through the respective air inlets 234 ', 236'. The cool air thus sucked is guided to each of the first air passages 242a 'and 244a' and is dispersed in the front, rear, left, and right directions of the flow path guides 246 'and 248', respectively. It is guided by each of the second ventilation passages 242b 'and 244b', and moves to the top of the flow path guides 246 'and 248'.

The cool air that has moved to the apexes of the flow path guides 246 ′ and 248 ′ is discharged from each of the first air discharge ports 238 ′ and 240 ′ and is directed downward along the corner of each of the inner cases 212 and 214. It is blown.
The cool air blown downward along the corners of the inner cases 212 and 214 collides with the bottoms of the inner cases 212 and 214, and then gathers at the lower center of the inside of each of the storage chambers 204 and 206. After cooling the central sides of the storage chambers 204 and 206 while being blown upward toward the central upper sides of the storage chambers 204 and 206, the air is circulated to the air intake ports 234 'and 236' of the flow path guides 246 'and 248'. You.

  On the other hand, a part of the cool air guided to each of the second air passages 242b 'and 244b' and moved to the apexes of the flow path guides 246 'and 248' is separated from the second air discharge ports 238 "and 240". The plurality of inner cases 212 and 214 are discharged downward in the vicinity of the center in the front-rear direction of the opposing portions to promote the circulation of cool air, thereby minimizing the temperature deviation in the storage chambers 204 and 406.

  That is, the cool air inside the storage chambers 204 and 406 circulates through the center of the storage chambers 204 and 206, the inside of the doors 226 and 228, the edges of the storage chambers 204 and 406, and the lower part of the storage chambers 204 and 206. The internal temperature of the storage chambers 204 and 206 is maintained uniformly as a whole, and in particular, more cooling air is circulated around the center in the front-rear direction of the opposing portions of the plurality of inner cases 212 and 214, thereby increasing the heat insulation performance difference. To minimize temperature deviations.

  On the other hand, in the fifth embodiment of the direct cooling refrigerator according to the present invention, the blower and the flow path guide are mounted on each of a plurality of doors, but the present invention is not limited to the fifth embodiment, It is needless to say that the present invention is applicable to a case where the blower and the flow path guide are mounted only on a part of the plurality of doors.

1 is an internal configuration diagram of a first embodiment of a direct cooling refrigerator according to the present invention. It is a top view showing an example of a storage room and a channel guide in a 1st example of a direct cooling type refrigerator concerning the present invention. It is a bottom view showing an example of a channel guide in a 1st example of a direct cooling type refrigerator concerning the present invention. It is a top view showing other examples of a storage room and a channel guide in a 1st example of a direct cooling type refrigerator concerning the present invention. It is a bottom view showing other examples of a channel guide in a 1st example of a direct cooling type refrigerator concerning the present invention. FIG. 4 is an internal configuration diagram of a second embodiment of the direct cooling refrigerator according to the present invention. FIG. 6 is an internal configuration diagram of a third embodiment of the direct cooling refrigerator according to the present invention. FIG. 9 is an internal configuration diagram of a fourth embodiment of a direct cooling refrigerator according to the present invention. It is a bottom view showing an example of a door and a channel guide in a 4th embodiment of a direct cooling type refrigerator concerning the present invention. It is a top view showing an example of a channel guide in a 4th example of a direct cooling type refrigerator concerning the present invention. It is a bottom view showing other examples of a door and a channel guide in a 4th embodiment of a direct cooling type refrigerator concerning the present invention. It is a top view showing other examples of a channel guide in a 4th embodiment of a direct cooling type refrigerator concerning the present invention. FIG. 10 is an internal configuration diagram of a fifth embodiment of a direct cooling refrigerator according to the present invention. It is a bottom view showing an example of a door and a channel guide in a 5th example of a direct cooling type refrigerator concerning the present invention. It is a top view showing an example of a channel guide in a 5th embodiment of a direct cooling type refrigerator concerning the present invention. It is a bottom view showing other examples of a plurality of doors and a channel guide in a 5th embodiment of a direct cooling type refrigerator concerning the present invention. It is a top view showing other examples of a channel guide in a 5th example of a direct cooling type refrigerator concerning the present invention. It is a perspective view showing cold air flow when cold air is discharged by other examples of a flow guide in a 5th embodiment of a direct cooling type refrigerator concerning the present invention.

Explanation of reference numerals

2, 202 ... outer case 3 ... machine room 4 ... compressor 5 ... evaporator 6 ... expander 20, 204, 206 ... storage room 22, 208, 210 ... refrigerant pipe 24, 212, 214 ... inner case 30 ... heat insulating material 32, 130, 226, 228 Door 14 Hinge 16, 134, 216, 254, 256 Thermal insulation 18 Packing 40, 100, 110, 120, 230, 232 Blower 42, 102, 112, 122, 262 , 264 ... blow motors 43, 101, 111, 121, 258, 260 ... rotating shafts 44, 104, 114, 124, 266, 268 ... blow fans 50, 50 ', 140, 140', 246, 246 ', 248, 248 '... flow path guides 52, 52', 144, 144 '238, 240 ... air discharge ports 54, 54', 142, 142 ', 234, 234', 236, 2 6 '... air inlets 56, 56', 146, 146 ', 242, 244, 242', 244 '... ventilation passages 56a', 146a '... first ventilation passages 56b', 146b '... second ventilation passages 57, 150, 270, 272 deodorant 58 discharge port waterproof rib 59 suction port waterproof rib 132, 250, 252 door case 238 ', 240' first air discharge port 238 ", 240" second air discharge port

Claims (20)

An outer case;
An inner case provided inside the outer case, having a storage chamber with an open upper surface, and having a refrigerant pipe through which a refrigerant flows;
A heat insulator disposed between the inner case and the outer case;
A door for opening and closing the storage room;
A blower mounted at a lower portion of the storage room to circulate cool air in the storage room such that cool air at the center of the storage room is raised and cool air at an edge of the storage room is lowered. A direct-cooled refrigerator characterized by the following.   The direct cooling refrigerator is disposed at an inner lower portion of the inner case, has an air outlet at a center, and has a plurality of air inlets at an edge, and the air outlet and the air inlet. The direct-cooled refrigerator according to claim 1, further comprising a flow path guide that forms an air passage that communicates with the refrigerator. The channel guide is formed in a polygonal shape,
The direct-cooled refrigerator according to claim 2, wherein the air inlet is formed at a center of an edge of the channel guide. The channel guide is formed in a polygonal shape,
The direct-cooled refrigerator according to claim 2, wherein the air inlet is formed at an apex of an edge of the flow path guide.   The direct-cooled refrigerator according to claim 2, wherein the direct-cooled refrigerator further includes a deodorant provided in the air discharge port.   2. The air blower according to claim 1, wherein the air blower includes a blower motor provided at a center of an inner bottom of the inner case, and a blower fan provided on a rotation shaft of the blower motor. 3. Direct-cooled refrigerator.   The blower is disposed below the center of the bottom of the inner case, the blower motor having a rotating shaft protruding into the storage chamber through an opening formed in the inner case; and The direct-cooled refrigerator according to claim 1, further comprising a blower fan provided on the rotating shaft.   The blower is disposed in a machine room formed at a lower portion of the outer case, and a blower motor having a rotation shaft protruding into the storage chamber through an opening formed in the heat insulating material and the inner case. The direct-cooled refrigerator according to claim 1, comprising: a blower fan provided on a rotation shaft of the blower motor. An outer case;
An inner case disposed inside the outer case and having a storage chamber with an open top surface and a refrigerant pipe through which a refrigerant flows;
A heat insulating material formed between the inner case and the outer case;
A door for opening and closing the storage room;
Blowing means for circulating cool air in the storage chamber so that the cool air at the center of the storage chamber is mounted on the door and the cool air at the edge of the storage chamber is lowered. A direct-cooled refrigerator characterized by: The door includes a flow path guide that guides the cold air inside the storage chamber to be discharged after being sucked,
The passage guide has an air inlet formed at the center, a plurality of air outlets formed at an edge, and a ventilation passage communicating with the air inlet and the air outlet. The direct-cooled refrigerator according to claim 9. The channel guide is formed in a polygonal shape,
The direct-cooled refrigerator according to claim 10, wherein the air discharge port is formed at a center of an edge of the flow path guide. The channel guide is formed in a polygonal shape,
The direct cooling refrigerator according to claim 10, wherein the air discharge port is formed at an apex of an edge of the flow path guide.   The direct-cooled refrigerator according to claim 10, wherein the direct-cooled refrigerator further includes a deodorant provided at an air inlet of the flow path guide. The blower is disposed at the center of the door, a blower motor whose rotating shaft protrudes downward,
The direct-cooled refrigerator according to claim 9, comprising a blower fan provided on a rotation shaft of the blower motor. An outer case;
A plurality of inner cases, each of which is provided inside the outer case and has a storage chamber with an open upper surface, and each of which is provided with a refrigerant pipe through which a refrigerant flows;
A heat insulator disposed between the plurality of inner cases and the outer case, and between the plurality of inner cases;
A plurality of doors for opening and closing each of the storage compartments;
A blower mounted on at least one or more of the plurality of doors to circulate cool air in the storage room such that cool air at the center of the storage room is raised and cool air at an edge of the storage room is lowered. ;
At least one of the plurality of doors has an air inlet formed at a center thereof so that cold air in the storage chamber is sucked and discharged after being sucked, and a plurality of air outlets are formed at an edge. A direct-cooled refrigerator characterized by comprising a flow path guide in which a ventilation passage communicating with the air suction port and the air discharge port is formed. The channel guide is formed in a polygonal shape,
The direct-cooled refrigerator according to claim 15, wherein the air discharge port is formed at a center of an edge of the channel guide. The channel guide is formed in a polygonal shape,
The direct cooling refrigerator according to claim 15, wherein the air discharge port is formed at an apex of an edge of the flow path guide. The channel guide is formed in a polygonal shape,
The direct cooling according to claim 15, wherein the air discharge port is formed between a vertex portion of an edge of the flow path guide and a vertex portion of an edge facing the plurality of doors. Refrigerator.   The direct-cooled refrigerator according to claim 15, wherein the direct-cooled refrigerator further includes a deodorant provided at an air inlet of the flow path guide.   16. The air blower, comprising: a motor disposed at the center of the door and having a rotating shaft protruding downward; and a blower fan mounted on the rotating shaft of the motor. The direct-cooled refrigerator according to 1.

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