JPH08271114A - Cooling device - Google Patents

Abstract

PURPOSE: To effectively utilize a convection flow generated by a fan of a blower in a cooling device, and further improve a heat exchanging efficiency of the cooling device. CONSTITUTION: A pipe 19 of a cooling device 18 is formed spirally and a fan 23 of a blower 22 is installed at a location corresponding to a central part of the spiral. Many fins 20 in the pipe 19 are arranged along an air convection flow direction formed in the rotation of the fan 23. As the fan 23 is rotated, the air convections formed by air sucking from the whole circumference toward the fan 23 pass through the cooling device 18. Accordingly, the convection flow generated by the fan 23 can be effectively utilized at the cooling device 18, and a heat exchanging efficiency of the cooling device 18 can be improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling device having a structure in which air cooled by a cooler is forcedly circulated by a blower to cool a cooling chamber.

[0002]

2. Description of the Related Art A conventional structure of a cooling device, for example, a cooler portion in a refrigerator is shown in FIGS. Cooler 1
Is configured by forming a pipe 2 connected to a refrigeration cycle in a meandering shape and providing a large number of fins 3 on the pipe 2, and arranging it in a cooler accommodation chamber 4 formed at the rear part of the refrigerator main body. It is set up. In this case, the fins 3 of the cooler 1 are provided such that the lower side is rough and the upper side is denser. Above the cooler 1, a blower 5 including a fan 5a composed of a propeller fan and a motor 5b for rotationally driving the fan 5a is arranged.

In the above structure, however, the fan 5a
When the motor 5b is rotated in the direction of arrow a, the air cooled by the cooler 1 is sucked into the fan 5a side by the blowing action of the fan 5a, and the air is cooled from the outlet 6 through the outlet 6. 7 is supplied to the refrigerating chamber through a duct (not shown), and the air in the freezing chamber 7 and the refrigerating chamber is accommodated through the duct (not shown) from the suction port 4a at the lower part of the cooler accommodating chamber 4. The air in the refrigerator is forcedly circulated by being sucked into the chamber 4.

[0004]

By the way, when the fan 5a of the blower 5 is rotated, a convection flow is formed which is sucked toward the fan 5a from the entire circumference around the fan 5a. However, in the conventional configuration described above, the cooler 1
Among the convections formed by the fan 5a, only the convections flowing from the lower side of the fan 5a to the fan 5a side are used as the convections passing through, so that the convection formed by the fan 5a is effectively used. However, it cannot be said that the heat exchange efficiency of the cooler 1 is not necessarily good.

Therefore, an object of the present invention is to provide a cooling device capable of effectively utilizing convection formed by a fan of a blower in a cooler and improving heat exchange efficiency of the cooler.

[0006]

The first means of the present invention is to:
In order to achieve the above-mentioned object, a cooling device has a pipe connected to a refrigeration cycle, the pipe is formed in a spiral shape and is arranged in a cooler housing chamber, and a spiral of the pipe. It is arranged in the part corresponding to the center of
An air blower provided with a fan that sucks the air cooled by the cooler and supplies the air to the cooling chamber.

A second means of the invention comprises a pipe connected to the refrigeration cycle to achieve a similar object,
A cooler in which the pipe is formed in a spiral shape and arranged in a cooler housing chamber, an air passage forming plate which is provided in the pipe along an extending direction of the pipe and forms a spiral air passage, and It is arranged in the part corresponding to the center of the spiral of the pipe,
An air blower equipped with a fan that sucks the air cooled by the cooler through the ventilation passage and supplies the air to the cooling chamber. In this case, it is preferable to provide a large number of fins facing the ventilation passage on the ventilation passage forming plate. Further, it is preferable to form the drainage hole in a portion of the ventilation path forming plate located below the blower.

A third means of the present invention is, in order to achieve the same object as described above, a cooler arranged in a cooler accommodating chamber having first and second cooling parts in a separated state. And the first
And a blower provided with a fan disposed at a portion corresponding to the second cooling unit and sucking the air cooled by the first and second cooling units and supplying the air to the cooling chamber. It is what

In the first and third means, it is preferable that the plurality of fins in the cooler are arranged along the convection direction of the air formed by the fan of the blower.

[0010]

According to the first means, since the pipe of the cooler is formed in a spiral shape and the fan of the blower is arranged at the portion corresponding to the center of the spiral, all of the fans are arranged. All the convection (wind) of the air formed by being sucked toward the fan from the circumference passes through the cooler. Therefore, the convection formed by the fan can be effectively used for the cooler, the heat exchange efficiency of the cooler can be improved, and the cooling performance of the cooler can be improved.

According to the second means, the spiral ventilation passage is formed by the ventilation passage forming plate provided along the pipe of the cooler, and the fan of the blower is arranged at a portion corresponding to the center of the spiral. Since it is provided, all the convection of air formed by being sucked toward the fan from the entire circumference of the fan passes through the cooler through the ventilation passage. Therefore, as in the case of the first means, the convection formed by the fan can be effectively used for the cooler, the heat exchange efficiency of the cooler can be improved, and the cooling performance of the cooler can be improved. Can be planned.

In this case, by providing a large number of fins facing the ventilation passage on the ventilation passage forming plate, the heat exchange efficiency can be further improved and the cooling performance of the cooler can be further improved. By forming a drainage hole in the ventilation passage forming plate, water generated inside the ventilation passage forming plate can be discharged through the drainage hole, and water is accumulated inside the spiral ventilation passage forming plate. It can be prevented. In addition, during defrosting of the cooler, warm air rises through the drain holes, so that defrosting can be performed well.

According to the third means, the cooler is arranged in the first cooling section and the second cooling section in a separated state, and the first cooling section and the second cooling section are separated from each other. Since the fan of the blower is arranged between the fans, most of the convection of air formed by being sucked toward the fan from the entire circumference of the fan passes through the cooler. Therefore, as in the case of the first means, the convection formed by the fan can be effectively used for the cooler, the heat exchange efficiency of the cooler can be improved, and the cooling performance of the cooler can be improved. Can be planned.

In the first and third means, by disposing a large number of fins in the cooler along the convection direction of the air formed by the fan of the blower,
Since the fins do not interfere with air convection (flow of wind) and come into good contact with the wind, heat exchange efficiency can be further improved.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment in which the present invention is applied to a refrigerator will be described below with reference to FIGS. First, FIG.
In FIG. 2, a cooler housing chamber 12 is formed in the rear part of the refrigerator main body 11, and the cooler housing chamber 12 is formed between the heat insulating wall 13 and the partition member 14 having heat insulating properties. . An inner box 15 is arranged on the front side of the partition member 14 with a predetermined gap, and the front of the inner box 15 is
The freezing chamber 16 is one of the cooling chambers. Inner box 15
A plurality of outlets 17 for the cool air are formed in the. A suction port 12 a is formed in the lower part of the cooler housing chamber 12.

A cooler 18 is arranged in the cooler housing chamber 12. This cooler 18 has a structure in which a pipe 19 connected to a refrigeration cycle is formed in a spiral shape and a large number of plate-shaped fins 20 are provided on the pipe 19 as shown in FIGS. 3 and 4. Has been done. Pipe 19
Is configured by arranging two outward pipes 19a on the refrigerant inlet side and two return pipes 19b on the refrigerant outlet side in parallel. Therefore, although not shown, the spiral tip portion 19c of the pipe 19 is not illustrated.
9a and the return pipe 19b are connected in a U shape. An accumulator 21 is connected to the exit side of the return pipe 19b.

Here, each fin 20 of the cooler 18 is arranged along the convection direction of air formed by the rotation of a fan 23 described later. Further, the fins 20 are densely arranged on the side close to the center of the spiral, and are arranged so as to become rougher toward the outside.

In the cooler accommodating chamber 12, a blower 22 is arranged at a portion of the cooler 18 corresponding to the center of the spiral of the pipe 19. The blower 22 includes a fan 23, which is a propeller fan, and a motor 24, which drives the fan 23 to rotate. this house,
The fan 23 has a ventilation port 25 formed in the partition member 14.
The motor 24 is mounted and fixed to the heat insulating wall 13.

In the above structure, however, the blower 22
When the fan 23 of FIG. 1 is rotated in the direction of arrow A (counterclockwise direction) in FIG. 1, the air blown by the fan 23 causes the air cooled by the cooler 18 to move as shown by arrow B.
It is sucked into the fan 23 side from the entire circumference of the fan 23. The air sucked into the fan 23 side is supplied from the outlet 17 to the freezing compartment 16 and is also supplied to the refrigerating compartment through a duct (not shown). Accordingly, the air in the freezing compartment 16 and the refrigerating compartment is not shown. The air in the refrigerator is forcibly circulated in such a manner that the air is sucked into the cooler housing chamber 12 from the suction port 12a at the lower part of the cooler housing chamber 12 through the duct. Thereby, the freezer compartment 16 and the refrigerating compartment are cooled.

According to such a first embodiment, the fan 2
Since all the convection of the air formed by being sucked toward the fan 23 from the entire circumference of 3 passes through the cooler 18, the convection formed by the fan 23 can be effectively used for the cooler 18. At the same time, the amount of air passing through the cooler 18 can be increased. Therefore, it is possible to improve the heat exchange efficiency of the cooler 18, and thus the cooler 1
The cooling performance of No. 8 can be improved.

In this case, the fins 20 in the cooler 18
Are arranged along the air convection direction formed by the fan 23, the fins 20 do not interfere with the air convection (wind flow) and come into good contact with the air, so that the heat exchange efficiency is improved. Can be further improved.

5 to 8 show a second embodiment of the present invention, which is different from the above-mentioned first embodiment in the following points. That is, in the cooler 26, the spirally formed pipe 19 is provided with the ventilation passage forming plate 27 along the pipe 19, and the ventilation passage forming plate 27 forms the spiral ventilation passage 28. Has been done. A large number of fins 29 are provided on the inner surface side of the air passage forming plate 27 so as to face the air passage 28 and along the convection flowing through the air passage 28. Also in this case, the fins 29 are densely arranged on the side close to the center of the spiral, and are arranged so as to become rougher toward the outside. Further, in the ventilation passage forming plate 27, a plurality of drain holes 3 are provided at a portion corresponding to the lower side of the blower 22, as shown in FIG.
0 is formed.

The fan 23 is arranged at a portion corresponding to the center of the spiral, as in the first embodiment.
In this case, the rotation direction of the fan 23 is the direction of arrow C (clockwise direction) in FIG. 5, which is the opposite of that of the first embodiment.

In the above structure, however, the fan 23
5 is rotated in the direction of arrow C in FIG. 5, the air blown by the fan 23 sucks the air cooled by the cooler 18 to the fan 23 side through the ventilation passage 28 as shown by the arrow D. The air sucked into the fan 23 side is supplied to the freezing compartment 16 and the refrigerating compartment in the same manner as in the first embodiment, and along with this, the air in the freezing compartment 16 and the refrigerating compartment is in the lower part of the cooler housing compartment 12. The air in the refrigerator is forcibly circulated in such a manner that the air is sucked into the cooler housing chamber 12 from the suction port 12a.

According to such a second embodiment, the fan 2
Since the convection of the air formed by being sucked toward the fan 23 from all the circumferences of 3 will pass through the cooler 26 through the ventilation path 28, the convection formed by the fan 23 will reach the cooler 26. It can be effectively used and the amount of air passing through the cooler 26 can be increased. Therefore, as in the first embodiment, the heat exchange efficiency of the cooler 26 can be improved, and the cooling performance of the cooler 26 can be improved.

Further, since a large number of fins 29 facing the ventilation passage 28 are provided on the ventilation passage forming plate 27 and each fin 29 is arranged along the convection flowing through the ventilation passage 28, heat The exchange efficiency can be further improved, and the cooling performance of the cooler 26 can be further improved. Further, the ventilation path forming plate 27
Since the drainage hole 30 is formed in the air passage, the water generated inside the ventilation passage forming plate 27 can be discharged through the drainage hole 30, and the water is accumulated inside the spiral ventilation passage forming plate 27. Can be prevented. In addition, when defrosting the cooler 26, warm air rises through the drain holes 30, so that defrosting can be favorably performed. A mesh may be provided in the drain hole 30.

FIG. 9 shows a third embodiment of the present invention. This third embodiment differs from the first embodiment in the following points. That is, in the cooler 31, the pipe 19
Is formed so as to have a first cooling section 32 on the upper side and a second cooling section 33 on the lower side in a separated state. Of the pipe 19, the first cooling unit 32 and the second cooling unit 3
Each of the three parts is formed in a meandering shape. Then, the fan 23 in the blower 22 is connected to the first cooling unit 3
It is arranged at a corresponding portion between the second cooling unit 33 and the second cooling unit 33. Further, the large number of fins 20 provided on the pipe 19 are arranged radially around the fan 23.

In the above structure, however, the fan 23
9 is rotated in the direction of arrow A in FIG. 9, the air blown by the fan 23 causes the air cooled by the cooler 18 to move from the entire circumference of the fan 23 to the fan 23 as shown by arrow E.
Is sucked to the side. The air drawn into the fan 23 side is
In the same manner as in the first embodiment, the air is supplied to the freezer compartment 16 and the refrigerating compartment, and along with this, the air in the freezer compartment 16 and the refrigerating compartment is supplied from the suction port 12a at the lower part of the cooler compartment 12 to the cooler compartment 12. The air in the refrigerator is forced to circulate as it is sucked into.

Also in the third embodiment as described above, it is possible to obtain substantially the same operational effects as in the first embodiment. In addition,
The first and second cooling units 32 and 33 may be arranged in a state of being separated left and right around the blower 22.

The present invention can be applied not only to a refrigerator but also to a cooling device such as a vending machine, as long as it has a cooler and a blower for forcibly circulating the air in the refrigerator.

[0031]

According to the cooling device of the first aspect of the present invention, the pipe of the cooler is formed in a spiral shape, and the fan of the blower is arranged at a portion corresponding to the center of the spiral. All the convection (wind) of the air formed by being sucked toward the fan from the entire circumference of the fan passes through the cooler. Therefore, the convection formed by the fan can be effectively used for the cooler, the heat exchange efficiency of the cooler can be improved, and the cooling performance of the cooler can be improved.

According to the cooling device of the second aspect, a spiral ventilation passage is formed by the ventilation passage forming plate provided along the pipe of the cooler, and the blower of the blower is provided at a portion corresponding to the center of the spiral. Since the fan is provided, all the convection of air formed by being sucked toward the fan from the entire circumference of the fan passes through the cooler through the ventilation passage. Therefore, as in the case of claim 1,
The convection formed by the fan can be effectively used for the cooler, the heat exchange efficiency of the cooler can be improved, and the cooling performance of the cooler can be improved.

According to the cooling device of the third aspect, the heat exchange efficiency can be further improved and the cooling performance of the cooler can be further improved by providing the ventilation path forming plate with a large number of fins facing the ventilation path. .

According to the cooling device of the fourth aspect, by forming the drainage holes in the ventilation passage forming plate, the water generated inside the ventilation passage forming plate can be discharged through the drainage holes, and the spiral shape is formed. It is possible to prevent water from accumulating inside the ventilation path forming plate. In addition, during defrosting of the cooler, warm air rises through the drain holes, so that defrosting can be performed well.

According to the cooling device of the fifth aspect, the cooler is arranged in the first cooling section and the second cooling section in a separated state, and the first cooling section and the second cooling section are provided. Since the fan of the blower is disposed between the fan and the section, most of the convection of air formed by being sucked toward the fan from the entire circumference of the fan passes through the cooler. Therefore, as in the case of claim 1, convection formed by the fan can be effectively used for the cooler, the heat exchange efficiency of the cooler can be improved, and the cooling performance of the cooler can be improved. be able to.

According to the cooling device of the sixth aspect, the fins are arranged along the convection direction of the air formed by the fan of the blower, so that the fins have the convection of the air (flow of the air). ) And the good contact with the wind, the heat exchange efficiency can be further improved.

[Brief description of drawings]

FIG. 1 is a rear view of an essential part showing a first embodiment of the present invention.

FIG. 2 is a vertical sectional side view of a main part.

FIG. 3 is a partially enlarged rear view of the pipes and fins of the cooler.

FIG. 4 is a cutaway enlarged perspective view of the same portion.

FIG. 5 is a view corresponding to FIG. 1 showing a second embodiment of the present invention.

FIG. 6 is a view corresponding to FIG.

FIG. 7 is a view corresponding to FIG.

FIG. 8 is a partial plan view of the drainage hole portion viewed from the top along the line XX in FIG.

FIG. 9 is a view corresponding to FIG. 1 showing a third embodiment of the present invention.

FIG. 10 is a diagram corresponding to FIG. 1 showing a conventional configuration.

FIG. 11 is a view corresponding to FIG.

[Explanation of symbols]

11 is a refrigerator main body, 12 is a cooler accommodating chamber, 16 is a freezer chamber (cooling chamber), 18 is a cooler, 19 is a pipe, 20 is a fin, 22 is a blower, 23 is a fan, 24 is a motor, 25
Is a ventilation port, 26 is a cooler, 27 is a ventilation path forming plate, 28 is a ventilation path, 29 is a fin, 30 is a drain hole, 31 is a cooler,
32 is a 1st cooling part, 33 is a 2nd cooling part.

Claims (6)

[Claims] 1. A cooler having a pipe connected to a refrigeration cycle, the pipe being formed in a spiral shape and disposed in a cooler accommodating chamber, and a portion corresponding to a central portion of the spiral of the pipe. A cooling device, which is provided with a fan that sucks the air cooled by the cooler and supplies the cooled air to the cooling chamber. 2. A cooler having a pipe connected to a refrigerating cycle, the pipe being formed in a spiral shape and arranged in a cooler accommodating chamber, and the pipe being provided along the extending direction of the cooler. An air passage forming plate that forms a spiral air passage, and a pipe that is disposed at a portion corresponding to the center of the spiral of the pipe, sucks air cooled by the cooler through the air passage, and supplies the air to the cooling chamber. And a blower equipped with a fan. 3. The cooling device according to claim 2, wherein the ventilation path forming plate is provided with a large number of fins facing the ventilation path. 4. The cooling device according to claim 2, wherein a drainage hole is formed in a portion of the ventilation passage forming plate below the blower. 5. A cooler provided with a first and a second cooling section in a separated state in a cooler accommodating chamber, and arranged at a portion corresponding to the first and the second cooling section. An air blower provided with a fan that is installed and sucks the air cooled by the first and second cooling units and supplies the air to the cooling chamber. 6. The cooler according to claim 1, wherein the cooler has a large number of fins, and each fin is arranged along a convection direction of air formed by a fan of the blower. Cooling system.