WO2016067509A1

WO2016067509A1 - Heat exchange device and heat generation body-receiving device using same

Info

Publication number: WO2016067509A1
Application number: PCT/JP2015/004720
Authority: WO
Inventors: 柴田　洋; 忍織戸; 裕二中野
Original assignee: パナソニックＩｐマネジメント株式会社
Priority date: 2014-10-28
Filing date: 2015-09-16
Publication date: 2016-05-06

Abstract

A heat exchange device (8) is provided with: a body case (12); a partition plate (13) for dividing the inside of the body case (12) into an internal-air compartment (15) and an external-air compartment (14), which are independent of each other; an internal-air circulation blower (5) for delivering air into the internal-air compartment (15); an external-air blower (17) for delivering air into the external-air compartment (14); an evaporator (18) provided in the internal-air compartment (15) and evaporating a refrigerant; a condenser (16) provided within the external-air compartment (14) and condensing the refrigerant; and at least one or more bends (21) provided to the partition plate (13). The condenser (16) and the evaporator (18) are connected by a refrigerant gas pipe (19) and a refrigerant liquid pipe (20) to form a refrigerant cycle. The bends (21) are tilted in the same direction as a line which connects the condenser (16) and the evaporator (18). At least one of the bends (21) is located downstream of the upstream end of air which flows parallel to the condenser (16) and the evaporator (18).

Description

Heat exchange device and heating element storage device using the same

The present invention relates to a heat exchange device and a heating element storage device using the heat exchange device.

Conventionally, this type of heat exchanging device is used for cooling inside a sealed container box that includes electronic components that generate heat, such as a base station of a mobile phone.

In recent years, higher performance of electronic components and higher density of electronic components with respect to the control board have progressed, and the amount of heat generated from the control board has increased dramatically. Along with this, miniaturization of storage boxes for electronic components and the like has progressed, and high performance and miniaturization of cooling devices are required.

In response to this requirement, a cooling method using a heat pipe is known as a cooling method with few components and a large amount of heat transfer (see, for example, Patent Document 1).

However, in the heat pipe, the refrigerant vapor that rises by boiling and the refrigerant liquid that condenses and descends move in the same pipe. For this reason, there is a problem that the refrigerant circulation efficiency deteriorates against each other and the heat exchange efficiency is poor. Therefore, the evaporator in which the refrigerant evaporates and the condenser in which the refrigerant is condensed and liquefied are separated. In order for the refrigerant boiling and evaporated in the evaporator to move to the condenser, a refrigerant vapor pipe for connecting the evaporator and the condenser, and for the refrigerant condensed and liquefied in the condenser to move to the evaporator, A refrigerant circuit is formed by a refrigerant liquid pipe that communicates the evaporator. Thus, a boiling cooling device that can efficiently dissipate heat by circulating a refrigerant is known (see, for example, Patent Document 2).

Hereinafter, a conventional boiling cooling device will be described with reference to FIG. FIG. 5 is a side view of a conventional boiling cooling device.

As shown in FIG. 5, the boiling cooling device 101 is attached to a housing 103 that houses a heating element 102 therein.

The boiling cooling device 101 includes a high temperature side heat exchanger 104 that performs heat exchange between the high temperature side fluid and the low temperature refrigerant, and a low temperature side heat exchanger 105 that performs heat exchange between the low temperature side air and the high temperature refrigerant. Composed. The boiling cooling device 101 includes a connecting pipe 106 that connects the high temperature side heat exchanger 104 and the low temperature side heat exchanger 105, a high temperature side blower 107 that blows the high temperature side fluid to the high temperature side heat exchanger 104, and low temperature side heat. The exchanger 105 includes a low-temperature side fan 108 that blows low-temperature side air.

A refrigerant is sealed in a closed circuit formed by the high temperature side heat exchanger 104, the low temperature side heat exchanger 105, and the connecting pipe 106.

The high temperature air inside the housing 103 passes through a duct-shaped inside air introduction path 110 provided on the back surface of the boiling cooling device 101 from the inside air inlet 109. Then, the high temperature air flows into the high temperature side heat exchanger 104, performs heat exchange with the high temperature side heat exchanger 104, and is returned into the housing 103 by the high temperature side blower 107.

At this time, the refrigerant in the high temperature side heat exchanger 104 evaporates by heat exchange with high temperature air, passes through the connecting pipe 106, and flows into the low temperature side heat exchanger 105.

On the other hand, the outside air taken in from the outside air inlet 111 by the operation of the low temperature side blower 108 passes through the air passage 112 provided between the high temperature side heat exchanger 104 and the low temperature side heat exchanger 105. Then, the outside air flows into the low temperature side heat exchanger 105, performs heat exchange with the low temperature side heat exchanger 105, and is then exhausted by the low temperature side blower 108.

At this time, the refrigerant in the low temperature side heat exchanger 105 is condensed by heat exchange with the outside air, passes through the connecting pipe 106, and flows into the high temperature side heat exchanger 104 again. Thus, the inside of the housing 103 is cooled by the natural circulation of the refrigerant.

In the boiling cooling device 101, after the air passes through the high temperature side heat exchanger 104 and the low temperature side heat exchanger 105, respectively, the high temperature side blower 107 and the low temperature side blower 108 suck in the air. For this reason, there exists a tendency for the air which flows into the ventilation path of the

heat exchangers

104 and 105 by the side where an air path length becomes short to increase. Therefore, the wind speed passing through the

heat exchangers

104 and 105 is not uniform.

JP-A-60-113498 Japanese Patent Laid-Open No. 10-261887

Such a conventional boiling cooling device has a problem that the cooling speed cannot be sufficiently exhibited because the wind speed passing through the heat exchanger becomes uneven.

Therefore, the present invention solves the above conventional problems. An object of this invention is to provide the heat exchange apparatus which can equalize the wind speed which passes a heat exchanger more, and can improve cooling performance.

In order to achieve this object, a heat exchange device according to the present invention includes a main body case, a partition plate that divides the inside of the main body case into independent internal air compartments and external air compartments, and an internal air circulation blower that blows air into the internal air compartments. And an outside air blower for blowing air to the outside air section. Moreover, it is provided with the evaporator which evaporates a refrigerant | coolant provided in an internal air division, the condenser provided in an external air division, and condenses a refrigerant | coolant, and the at least 1 or more bending part provided in the partition plate. The condenser and the evaporator are connected by a refrigerant air pipe and a refrigerant liquid pipe to form a refrigerant cycle. Further, the bent portion has an inclination in the same direction as a line connecting the condenser and the evaporator, and at least one of the bent portions is downstream of the upstream end portion of the air flowing in parallel with the evaporator and the condenser. Located in. This achieves the intended purpose.

According to the present invention, since the bent portion is provided at a position downstream of the upstream end of the air flowing in parallel with the evaporator and the condenser, the air is blown from the inside air circulation blower and the outside air blower. Air that tends to flow a lot on the downstream side of the air passage with straightness is diverted to the heat exchanger side. For this reason, air is blown also to the air path upstream side of the heat exchange device, and the wind speed of the air passing through the heat exchange device can be made more uniform. Therefore, an effect that the cooling performance is improved can be obtained.

Further, according to the present invention, the evaporator and the condenser are arranged to be inclined in the respective sections, so that the air that is blown from the inside-air circulation blower and the outside-air blower has a straight direction and has a wind direction. It can flow into the heat exchange device without change. For this reason, the wind speed of the air which passes a heat exchange apparatus can be equalized more. Therefore, an effect that the cooling performance is improved can be obtained.

FIG. 1 is a diagram showing a heating element storage device according to Embodiment 1 of the present invention. FIG. 2 is a side view of the heat exchange device according to Embodiment 1 of the present invention and a heating element storage device using the heat exchange device. FIG. 3 is a side view of the heat exchange device according to the second embodiment of the present invention. FIG. 4 is a side view of the heat exchange device according to Embodiment 3 of the present invention. FIG. 5 is a side view of a conventional boiling cooling device.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
FIG. 1 is a diagram showing a heating element storage device according to Embodiment 1 of the present invention. FIG. 2 is a side view of the heat exchange device according to Embodiment 1 of the present invention and a heating element storage device using the heat exchange device.

As shown in FIGS. 1 and 2, a mobile phone base station 1 corresponding to a heating element storage device includes a box-shaped cabinet 2, a rack 3, a fan unit 6, a heat exchange device 8, and an inside air duct 9. And the door cover 10. The rack 3 accommodates communication equipment provided in the cabinet 2. The fan unit 6 includes a blower 5 for circulating inside air in a blower case 4 installed on the top of the rack 3. The heat exchange device 8 is provided on the door 7 of the cabinet 2. The inside air duct 9 guides the air blown from the inside air circulation blower 5 to the heat exchange device 8. The door cover 10 covers the heat exchange device 8.

The heat exchanging device 8 fixes a flange 11 provided around the heat exchanging device 8 to the door 7 with a bolt or the like.

The inside of the main body case 12 that forms the outline of the heat exchange device 8 is partitioned by a partition plate 13 into an outside air compartment 14 on the door cover 10 side and an inside air compartment 15 on the cabinet 2 side.

The condenser 16 is arranged above the outside air section 14 so that the ventilation direction is substantially horizontal, and the outside air blower 17 is arranged below. In the inside air section 15, the evaporator 18 is disposed at a position lower than the condenser 16 so that the ventilation direction is substantially horizontal.

The main body case 12 is provided with an inside air inlet 22 above the evaporator 18 outside the inside air compartment 15 and an inside air inlet 23 at a position facing the evaporator 18. In addition, an outside air suction port 24 is provided at a position facing the suction port of the outside air blower 17 outside the outside air section 14, and an exhaust port 25 is provided at a position facing the condenser 16.

The condenser 16 and the evaporator 18 are provided with cylindrical tanks sealed at both ends at the upper and lower parts, and the upper and lower tank pipes are communicated with each other by a plurality of thin plate tubes having a plurality of holes therein. The heat exchanger has a structure in which a plurality of corrugated fins are provided between the thin plate tubes. That is, the heat exchanger is composed of tanks 16a (18a) and 16b (18b), tubes and fins.

The upper tank 16 a of the condenser 16 and the upper tank 18 a of the evaporator 18 are connected by a refrigerant trachea 19. The lower tank 16 b of the condenser 16 and the lower tank 18 b of the evaporator 18 are connected by a refrigerant liquid pipe 20. These connections form a closed circuit refrigerant cycle. A refrigerant is sealed inside the refrigerant cycle. This refrigerant flow is indicated by broken-line arrows in the pipe.

The refrigerant trachea 19 and the refrigerant liquid pipe 20 penetrate the partition plate 13. The independence of the outside air compartment 14 and the inside air compartment 15 is ensured by sealing the penetration portion with a gasket or the like (not shown).

The partition plate 13 is inclined toward the evaporator 18 at a position below the upper tank 18a of the evaporator 18 and inclined toward the condenser 16 at a position above the lower tank 16b of the condenser 16. As shown, a bent portion 21 is provided.

The inside air section 15 is provided with a control box 26 for controlling the inside air circulating blower 5 and the outside air blower 17.

With such a configuration, the air that has become hot due to the heat generated by the communication device housed in the rack 3 of the cabinet 2 is taken into the fan unit 6. The high temperature air blown out by the blower 5 for circulating inside air passes through the inside air duct 9 and flows into the heat exchange device 8 from the inside air suction port 22 of the heat exchange device 8. Thereafter, the air flows through the inside air passage 27 formed by the partition plate 13 and the main body case 12 downward. The flow of this high temperature air is indicated by an arrow (A).

The flow direction of the high-temperature air and the evaporator 18 are in a parallel relationship, and the high-temperature air has a straightness in the downward direction. However, the high temperature air flowing downward by the bent portion 21 provided on the partition plate 13 is turned to the evaporator 18 side on the upper side of the evaporator 18. For this reason, high temperature air also flows into the upper part of the evaporator 18. Accordingly, the high-temperature air passes through the evaporator 18 in a state where the wind speed distribution is not biased between the upper and lower parts. Therefore, the heat exchange efficiency in the evaporator 18 can be improved.

In the evaporator 18, the refrigerant evaporates due to heat absorption from the high-temperature air, and flows into the condenser 16 through the refrigerant trachea 19. The high-temperature air cooled by the endothermic action accompanying the evaporation of the refrigerant in the evaporator 18 returns to the cabinet 2 from the inside air supply port 23 to cool the communication device.

External air taken into the heat exchanging device 8 from the outside by the outdoor air blower 17 flows upward in the outdoor air passage 28 formed by the partition plate 13 and the main body case 12. This flow of outside air is indicated by an arrow (B).

The flow direction of the outside air and the condenser 16 are parallel to each other, and the outside air blown by the outside air blower 17 has an upward straightness, so that the outside air flows more easily to the upper part than the lower part of the condenser 16. However, the outside air flowing upward by the bent portion 21 provided in the partition plate 13 is turned to the condenser 16 side on the lower side of the condenser 16. For this reason, outside air easily flows into the lower part of the condenser 16. Therefore, the outside air passes through the condenser 16 in a state where the wind speed distribution is not biased between the upper part and the lower part. Therefore, the heat exchange efficiency in the condenser 16 can be improved.

In the condenser 16, the refrigerant is condensed by heat radiation to the outside air, and flows again into the evaporator 18 through the refrigerant liquid pipe 20. The outside air whose temperature has been raised by heat exchange with the refrigerant in the condenser 16 is discharged from the exhaust port 25 to the outdoors.

As described above, even in the heat exchange device 8 in which the protrusion from the cabinet 2 is reduced, the wind speed distribution passing through the evaporator 18 and the condenser 16 can be improved by the bent portion 21 provided in the partition plate 13. Therefore, the heat exchange efficiency of the evaporator 18 and the condenser 16 is improved. Therefore, the cooling capacity as the heat exchange device 8 can be improved.

In this embodiment, since the lower part of the condenser 16 and the upper part of the evaporator 18 are overlapped in the height direction, the partition plate 13 is provided with one bent portion 21. However, depending on the positional relationship between the condenser 16 and the evaporator 18, a plurality of bent portions may be provided, and the air flowing into the condenser 16 and the evaporator 18 is changed stepwise by providing a plurality of bent portions. You may let them.

As described above, the heat exchanging device 8 of the present embodiment has the main body case 12, the partition plate 13 that divides the inside of the main body case 12 into the independent internal air compartment 15 and the external air compartment 14, and the internal air compartment 15. A blower 5 for circulating inside air that blows air and an outside air blower 17 that blows air to the outside air section 14 are provided. In addition, an evaporator 18 that evaporates the refrigerant, an evaporator 18 that evaporates the refrigerant, a condenser 16 that condenses the refrigerant, and at least one bent provided in the partition plate 13. Part 21. Further, the condenser 16 and the evaporator 18 are connected by a refrigerant air pipe 19 and a refrigerant liquid pipe 20 to form a refrigerant cycle. Further, the bent portion 21 is inclined in the same direction as a line connecting the condenser 16 and the evaporator 18. Further, at least one of the bent portions 21 is located on the downstream side of the upstream end portion of the air flowing in parallel with the evaporator 18 and the condenser 16.

Thus, the bent portion 21 is provided at a position downstream of the upstream end portion of the air flowing in parallel with the evaporator 18 and the condenser 16, so that the air is blown from each blower and has a straight traveling property. Air that tends to flow a lot downstream is diverted to the heat exchanger. For this reason, air is blown also to the air path upstream side of the heat exchanger, and the wind speed of the air passing through the heat exchanger can be made more uniform. Therefore, an effect that the cooling performance is improved can be obtained.

Further, the heating element storage device corresponding to the base station 1 of the present embodiment is one in which the heat exchange device 8 is mounted. Thereby, the effect that cooling performance improves can be acquired.

(Embodiment 2)
FIG. 3 is a side view of the heat exchange device according to the second embodiment of the present invention. 3, the same components as those in FIGS. 1 and 2 are denoted by the same reference numerals, and detailed description thereof is omitted.

3, the evaporator 18 is disposed so as to be inclined so that the lower part is on the side of the partition plate 13 and the upper part is on the side opposite to the partition plate 13.

The condenser 16 is disposed so as to be inclined so that its upper part is close to the partition plate 13 side and its lower part is close to the cabinet 2 side.

In the above configuration, the high-temperature air flowing downward in the inside air air passage 27 has a straightness in the downward direction. However, since the ventilation path of the evaporator 18 is formed so as to cross the inside air path 27, the high-temperature air having straightness inevitably passes through the entire ventilation path of the evaporator 18 almost uniformly. Therefore, the heat exchange efficiency of the evaporator 18 can be improved.

Further, since the bent portion 21 is provided in the vicinity of the lower tank 18b of the evaporator 18, high-temperature air having a downward straightness is turned to the evaporator 18 side and easily flows into the evaporator 18. .

The same applies to the condenser 16 side, and the outside air that is blown by the outside air blower 17 and flows upward in the outside air passage 28 has a straightness in the upward direction. However, since the ventilation path of the condenser 16 is formed so as to cross the outside air path 28, the outside air having a straight traveling property inevitably passes through the entire ventilation path of the condenser 16 almost uniformly. Therefore, the heat exchange efficiency of the condenser 16 can be improved.

Since the heat exchange efficiency of the evaporator 18 and the condenser 16 is improved, the cooling capacity of the heat exchange device 8 can be improved.

As described above, the heat exchanging device 8 of the present embodiment partitions the main body case 12 having the inside air supply port 23 and the exhaust port 25 and the inside of the main body case 12 into the independent inside air compartment 15 and the outside air compartment 14. A partition plate 13, an inside air circulation fan 5 that blows air to the inside air section 15, and an outside air blower 17 that blows air to the outside air section 14 are provided. Moreover, the evaporator 18 provided in the inside air division 15 and evaporating a refrigerant | coolant, and the condenser 16 provided in the outside air division 14 and condensing a refrigerant | coolant are provided. Further, the condenser 16 and the evaporator 18 are connected by a refrigerant trachea 19 and a refrigerant liquid pipe 20 to form a refrigerant cycle. Further, the evaporator 18 is disposed in the inside air section 15 so that the air that has passed through the evaporator 18 is directed to the inside air supply port 23 of the main body case 12. Further, the condenser 16 is disposed in an inclined manner in the outside air section 14 so that the air that has passed through the condenser 16 is directed to the exhaust port 25 of the main body case 12.

This allows air that is blown from each blower and has straightness to flow into the heat exchanger without changing the wind direction. Therefore, the wind speed of the air passing through the heat exchanger can be made more uniform. Therefore, there is an effect that the cooling performance is improved.

(Embodiment 3)
FIG. 4 is a side view of the heat exchange device according to Embodiment 3 of the present invention. 4, the same components as those in FIGS. 1, 2, and 3 are denoted by the same reference numerals, and detailed description thereof is omitted.

4, the evaporator 18 is disposed so as to be inclined so that the upper part thereof is close to the partition plate 13 side and the lower part thereof is close to the cabinet 2 side.

Also, the inside air supply port 23 is provided below the evaporator 18 outside the inside air section 15 of the main body case 12.

In the evaporator 18, the refrigerant evaporated by the heat absorption from the high temperature air has a high flow velocity, and the pressure loss in the refrigerant trachea is larger than that of the liquid refrigerant. However, the upper part of the condenser 16 into which the gaseous refrigerant flows and the upper part of the evaporator 18 from which the gaseous refrigerant flows out are on the partition plate 13 side. Thereby, the condenser 16 is disposed so as to be inclined so that the air passing through the condenser 16 is directed toward the exhaust port 25 of the main body case 12. Therefore, the length of the refrigerant trachea connecting the two can be shortened. Therefore, the pressure loss in the refrigerant trachea can be reduced, and the refrigerant circulation amount increases. Therefore, the cooling capacity can be improved.

Further, the position of the inside air supply port 23 can be set lower than in the first and second embodiments. Therefore, the communication equipment accommodated in the lower part of the rack can be efficiently cooled by the cooled inside air blown out from the inside air supply port 23 into the cabinet 2.

As described above, the heat exchange device 8 of the present embodiment includes the main body case 12 having the exhaust port 25, the partition plate 13 that divides the interior of the main body case 12 into the independent internal air compartment 15 and the external air compartment 14, and the internal air. The inside air circulation blower 5 for blowing air to the section 15 and the outside air blower 17 for blowing air to the outside air section 14 are provided. Moreover, the evaporator 18 provided in the inside air division 15 and evaporating a refrigerant | coolant, and the condenser 16 provided in the outside air division 14 and condensing a refrigerant | coolant are provided. Further, the condenser 16 and the evaporator 18 are connected by a refrigerant air pipe 19 and a refrigerant liquid pipe 20 to form a refrigerant cycle. The evaporator 18 is inclined and arranged so that the outlet of the gaseous refrigerant that has passed through the evaporator 18 approaches the partition plate 13 side. Further, the condenser 16 is disposed so as to be inclined so that the air that has passed through the condenser 16 is directed toward the exhaust port 25 of the main body case 12.

This allows air that is blown from the inside air circulation blower and the outside air blower to flow straight into the heat exchanger without changing the wind direction. Therefore, the wind speed of the air passing through the heat exchanger can be made more uniform, and the length of the refrigerant trachea 19 having a high flow velocity and a large pressure loss can be shortened. Therefore, the refrigerant circulation amount is increased, and the cooling capacity is improved.

The heat exchange device according to the present invention can improve the cooling capacity by improving the wind speed distribution passing through the heat exchanger such as an evaporator and a condenser by providing a bent portion that changes the wind direction in the partition plate. it can. Therefore, it is useful as a heat exchange device and a heating element storage device using the heat exchange device.

DESCRIPTION OF SYMBOLS 1 Base station 2 Cabinet 3 Rack 4 Blower case 5 Blower for inside air circulation 6 Fan unit 7 Door 8 Heat exchange device 9 Inside air duct 10 Door cover 11 Flange 12 Main body case 13 Partition plate 14 Outside air compartment 15 Inside air compartment 16 Condenser

16a Upper tank

16b Lower tank 17 Outside air blower 18 Evaporator

18a Upper tank

18b Lower tank 19 Refrigerant air pipe 20 Refrigerant liquid pipe 21 Bent part 22 Inside air inlet 23 Inside air inlet 24 Outside air inlet 25 Exhaust opening 26 Control box 27 Inside air path 28 Outside air Wind path

Claims

A body case,
A partition plate for partitioning the inside of the main body case into independent inside air compartment and outside air compartment,
A blower for circulating inside air for blowing air into the inside air compartment;
An outside air blower for blowing air to the outside air compartment;
An evaporator provided in the inside air compartment for evaporating the refrigerant;
A condenser provided in the outside air compartment for condensing the refrigerant;
In the heat exchange apparatus provided with at least one or more bent portions provided in the partition plate,
The condenser and the evaporator are connected by a refrigerant trachea and a refrigerant liquid pipe to form a refrigerant cycle,
The bent portion is inclined in the same direction as a line connecting the condenser and the evaporator, and at least one of the bent portions is an upstream end portion of air flowing in parallel with the evaporator and the condenser. Heat exchange device located on the downstream side.
A body case having an inside air supply port and an exhaust port;
A partition plate for partitioning the inside of the main body case into independent inside air compartment and outside air compartment,
A blower for circulating inside air for blowing air into the inside air compartment;
An outside air blower for blowing air to the outside air compartment;
An evaporator provided in the inside air compartment for evaporating the refrigerant;
In the heat exchange device provided in the outside air compartment and provided with a condenser for condensing the refrigerant,
The condenser and the evaporator are connected by a refrigerant trachea and a refrigerant liquid pipe to form a refrigerant cycle,
The evaporator is arranged to be inclined in the inside air compartment so that the air that has passed through the evaporator is directed to the inside air supply port of the main body case,
The condenser is a heat exchange device that is disposed in an inclined manner in the outside air compartment so that air that has passed through the condenser is directed to the exhaust port of the main body case.
A body case having an exhaust port;
A partition plate for partitioning the inside of the main body case into independent inside air compartment and outside air compartment,
An inside air circulation blower for blowing air to the inside air compartment, and an outside air blower for blowing air to the outside air compartment,
An evaporator provided in the inside air compartment for evaporating the refrigerant;
In the heat exchange device provided in the outside air compartment and provided with a condenser for condensing the refrigerant,
The condenser and the evaporator are connected by a refrigerant trachea and a refrigerant liquid pipe to form a refrigerant cycle,
The evaporator is arranged to be inclined so that the outlet of the gaseous refrigerant that has passed through the evaporator approaches the partition plate side,
The condenser is a heat exchange device that is disposed so as to be inclined so that air that has passed through the condenser is directed toward the exhaust port of the main body case.
A heating element storage device equipped with the heat exchange device according to any one of claims 1 to 3.