WO2017128659A1

WO2017128659A1 - Device with heat exchange function

Info

Publication number: WO2017128659A1
Application number: PCT/CN2016/091912
Authority: WO
Inventors: 林辉; 洪宇平
Original assignee: 华为技术有限公司
Priority date: 2016-01-26
Filing date: 2016-07-27
Publication date: 2017-08-03
Also published as: CN105658033A

Abstract

Provided is a device with heat exchange function. The device is able to lower the overall height of the device and the overall height of the device to be increased when heat consumption of an electronic device increases. The device comprises a cabinet. The cabinet is provided with an electronic device, an internal circulation fan and a first heat exchanger. The internal circulation fan is provided above the electronic device, the first heat exchanger is provided on a door of a side wall of the cabinet. An air guide structural member is provided between the internal circulation fan and the first heat exchanger. The internal circulation fan enables the air in the cabinet to flow through the first heat exchanger via the air guide structural member. A second heat exchanger and an external circulation fan are provided at the top outside the cabinet. The first heat exchanger and the second heat exchanger are connected via a guide pipe and contain a heat-conductive working medium in communication therewith. The guide pipe enables the heat-conductive working medium to recirculate between the first heat exchanger and the second heat exchanger for heat exchange.

Description

Device with heat exchange

The present application claims priority to Chinese Patent Application No. PCT Application No. No. No. No. No. No. No. No. No. No. No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No

Technical field

Embodiments of the present invention relate to the field of communications, and more particularly to devices having hot swapping in the field of communications.

Background technique

The heat generated by the electronic device during operation causes the internal temperature of the electronic device to rise rapidly. If the heat is not dissipated in time, the electronic device will continue to heat up. When the temperature exceeds the normal operating temperature range of the electronic device in the electronic device, The performance of the electronic device is significantly degraded, which greatly affects the reliability of the electronic device, and thus the heat dissipation problem of the electronic device is receiving more and more attention. In order to prevent the communication electronic system from being affected by environmentally harmful dust, corrosive gases, mold and other adverse environmental factors, to ensure reliable and stable operation of the electronic system, the electronic devices and equipment in the electronic system are often placed in a closed cabinet, and the heat dissipation capability of the cabinet It is determined by factors such as heat dissipation area and air volume, and is limited by the cabinet volume. With the continuous improvement of the information technology industry (Information Technology, referred to as "IT") and the communication technology industry (Communication Technology, referred to as "CT"), outdoor sealed cabinets need stronger heat dissipation capability.

In order to achieve greater heat dissipation, a larger volume of temperature control unit is required. In the prior art, the temperature control unit is generally disposed on the top of the cabinet, and the heat dissipation capability is improved by increasing the height of the temperature control unit. However, when the internal electronic equipment consumes a lot of heat, this method requires a large increase in the height of the temperature control unit, resulting in a large increase in the overall size of the cabinet, which affects the compactness of the cabinet (ie, the unit volume heat dissipation capability of the cabinet).

Summary of the invention

In view of this, embodiments of the present invention provide a device with heat exchange that can reduce the overall height of the device and the increased height of the device when the heat consumption of the electronic device increases.

In a first aspect, there is provided a device having heat exchange, the device comprising a cabinet 200, the machine An electronic device 201, an internal circulation fan 202, and a first heat exchanger 203 are disposed in the cabinet 200. The internal circulation fan 202 is disposed above the electronic device 201, and the first heat exchanger 203 is disposed in the cabinet 200. An air guiding structure 204 is disposed between the inner circulation fan 202 and the first heat exchanger 203, and the inner circulation fan 202 causes air in the cabinet 200 to flow through the air guiding structure 204. The second heat exchanger 205 and the outer circulation fan 206 are disposed on the outer top of the cabinet 200, wherein the first heat exchanger 203 and the second heat exchanger 205 are connected by a conduit 207 and Containing a connected heat transfer medium, the conduit 207 causes the heat transfer medium to circulate between the first heat exchanger 203 and the second heat exchanger 205 to effect heat exchange.

In a first possible implementation manner of the first aspect, the top of the cabinet 200 is provided with a through hole, and the conduit 207 connects the first heat exchanger 203 and the second heat exchanger 205 through the through hole.

In conjunction with the above-described possible implementation of the first aspect, in a second possible implementation of the first aspect, the first heat exchanger 203 is disposed on a door of a sidewall that is the largest distance from the electronic device 201.

In conjunction with the above-mentioned possible implementation of the first aspect, in a third possible implementation manner of the first aspect, the first heat exchanger 203 is configured to convert hot air flowing through into cold air, the first heat exchange The 203 includes an evaporator.

In conjunction with the above possible implementation of the first aspect, in a fourth possible implementation of the first aspect, the second heat exchanger 205 is configured to convert cold air flowing through into hot air, the second heat exchange The 205 includes a condenser.

In conjunction with the above-mentioned possible implementation manner of the first aspect, in a fifth possible implementation manner of the first aspect, the outer portion of the cabinet 200 is further provided with a liquid cooling pump or an air conditioning compressor 208, the liquid cooling pump or the air conditioning compressor 208 is used for refrigeration.

In conjunction with the above possible implementation of the first aspect, in a sixth possible implementation manner of the first aspect, the first heat exchanger 203 or the second heat exchanger 205 includes a fin, the fin is a plate fin Type, tube wing or sleeve type.

In conjunction with the above possible implementation of the first aspect, in a seventh possible implementation of the first aspect, the heat transfer medium is ammonia, acetone or tetrafluoroethane R134A.

The device with heat exchange provided by the embodiment of the present invention can reduce the height of the whole device by using the internal space of the cabinet which is not effectively utilized in the prior art by dispersing the temperature control unit in different positions of the cabinet, thereby reducing the height of the device. The volume of the device can also reduce the overall height of the device when the heat consumption of the electronic device increases, to meet the evolving heat dissipation requirements of the cabinet.

DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings to be used in the embodiments of the present invention will be briefly described below. It is obvious that the drawings described below are only some embodiments of the present invention, Those skilled in the art can also obtain other drawings based on these drawings without paying any creative work.

1 is a schematic view showing the operation of a device having heat exchange in the prior art;

2 is a schematic diagram showing the operation of a device with heat exchange according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of the operation of another device with heat exchange according to an embodiment of the present invention.

Reference mark:

200-cabinet

201-electronic equipment

202-internal circulation fan

203-first heat exchanger

204-wind guide structure

205-second heat exchanger

206-outer circulation fan

207-catheter

detailed description

The various embodiments are now described with reference to the drawings, in which the same reference In the following description, numerous specific details are set forth However, it will be apparent that the embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to illustrate one or more embodiments.

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of the present invention.

In the prior art, the device with heat exchange includes a cabinet and a heat exchanger, and the heat exchanger is disposed at the top of the cabinet, and the inside of the cabinet includes only electronic equipment. As shown in FIG. 1, the apparatus includes a cabinet 100, an electronic device 101 installed in the cabinet 100, and the apparatus further includes a top mounted on the cabinet 100. The cold air space and the hot air space are separated from each other, and the cold air space is connected to the outside, and the hot air space is connected to the cabinet 100. The cold air space is internally provided with a condenser 102 and an outer circulation fan 104, and the hot air space is internally provided. The evaporator 103 and the internal circulation fan 105 are provided with a communicating heat transfer medium between the condenser 102 and the evaporator 103.

When the electronic device 101 is in operation, the hot air generated by the electronic device 101 flows into the hot air space by the inner circulation fan 105, and the cold air outside the device flows into the cold air space by the outer circulation fan 104. Thus, when the hot air in the hot air space passes through the evaporator 103, the heat transfer medium in the evaporator 103 absorbs most of the heat generated by the hot air, and the hot air absorbed by the heat passes through the air outlet of the hot air space. Discharge into the cabinet 100 (as indicated by the arrow N in the figure), part of the heat transfer medium located in the evaporator 103 is rapidly expanded and pressurized, and the heat transfer medium is pushed to the condenser 102; in the cold air space When the cold air passes through the condenser 102, the heat transfer medium in the condenser 102 encounters the cooling air of the cold air to cool down, the bubbles shrink, the gas condenses into a liquid, the pressure drops, the heat released and a very small part of the cold air are cooled by the cold air. The air outlet of the space is discharged to the external environment (as indicated by the arrow W in the figure).

As can be seen from the above, the temperature control unit, that is, the above heat exchanger, is disposed as a whole on the top of the cabinet. When the electronic device 101 has a large heat consumption, the height of the temperature control unit has to be greatly increased to meet the heat dissipation capability of the cabinet 100, which causes the overall volume of the device to be greatly increased, which affects the compactness of the cabinet (ie, the cabinet). Unit volume cooling capacity).

The apparatus with heat exchange provided by the embodiment of the present invention will be described in detail below with reference to FIG. 2 to FIG.

2 is a schematic diagram showing the operation of a device with heat exchange according to an embodiment of the present invention. As shown in FIG. 2, the device includes a cabinet 200. The cabinet 200 is provided with an electronic device 201, an inner circulation fan 202, and a first heat exchanger 203. The inner circulation fan 202 is disposed above the electronic device 201. The first heat exchanger 203 is disposed on the door of the side wall of the cabinet 200; between the inner circulation fan 202 and the first heat exchanger 203, an air guiding structure 204 is disposed, and the inner circulation fan 202 makes the The air in the cabinet 200 flows through the first heat exchanger 203 through the air guiding structure 204;

The top of the cabinet 200 is provided with a second heat exchanger 205 and an outer circulation fan 206. The first heat exchanger 203 and the second heat exchanger 205 are connected by a conduit 207 and provided with a connected heat transfer medium. The conduit 207 causes the heat transfer medium to circulate between the first heat exchanger 203 and the second heat exchanger 205 to effect heat exchange.

Specifically, in the embodiment of the present invention, when the electronic device 201 is in operation, the electronic device 201 The generated hot air flows through the first heat exchanger 203 through the air guiding structure 204 under the driving of the inner circulation fan 202, and the cold air outside the device flows through the second heat exchanger 205 under the driving of the outer circulation fan 206. Thus, when the hot air passes through the first heat exchanger 203, the heat transfer medium in the first heat exchanger 203 absorbs most of the heat generated by the hot air, and the hot air absorbed by the heat is discharged into the cabinet 200. (As indicated by the arrow N2 in the figure). Since the first heat exchanger 203 and the second heat exchanger 205 are connected by the conduit 207, part of the heat transfer medium located in the first heat exchanger 203 is rapidly expanded and pressurized, and the heat transfer medium is pushed. Flows to the second heat exchanger 205. When the outside cold air passes through the second heat exchanger 205, the heat transfer medium in the second heat exchanger 205 encounters the cooling of the cold air, the bubble shrinks, the gas condenses into a liquid, the pressure drops, the heat released, and the pole A small portion of the cold air is discharged to the outside environment (as indicated by arrow W2 in the figure). Due to the pressure difference between the two ends, and the randomness of the gas/liquid plug distribution and the unevenness of the local heat transfer, the pressure in the adjacent tubes is unbalanced, and the heat transfer medium is driven in the first heat exchanger 203 and the second heat exchange. Circulating flow between the 205s enables heat transfer from one end to the other.

It should be understood that the current layout of the communication cabinet is to arrange the inner circulation fan 202 above the electronic device 201. As shown in FIG. 2, such a layout has two advantages: on the one hand, since the hot air naturally rises, the cold air naturally settles. The principle that the inner circulation fan 202 is placed above the electronic device 201 is more convenient to send hot air to the first heat exchanger 203 in time; on the other hand, placing the electronic device 201 below can facilitate the installation and maintenance of the electronic device 201.

It should also be understood that only the outer circulation fan 206 is located on the right side of the second heat exchanger 205 in FIG. 2, and optionally, the outer circulation fan 206 may also be located on the left side of the second heat exchanger 205, the present invention. The embodiment does not limit this.

In the prior art, assuming that the height of the cabinet is L, the height of the evaporator is M, and the height of the condenser is N, then the overall height of the device is L+M+N, and the embodiment of the present invention utilizes the prior art without The interior space of the cabinet, such as the door edge portion inside the cabinet, places the evaporator and the inner circulation fan into the interior of the cabinet. In the embodiment of the invention, the height of the cabinet is L (the interior already includes an evaporator, that is, the invention The first heat exchanger) has a height N of the condenser. Therefore, the overall height of the apparatus of the embodiment of the present invention is L+N, which lowers the overall height of the apparatus compared to the prior art. In addition, in the prior art, when the heat consumption of the electronic device is continuously increased, the prior art needs to increase the height of the temperature control unit, that is, increase the height M+N, and the present invention only needs to increase the height M. Therefore, the present invention can also reduce the electronic device. The device requires an increased overall height as the heat consumption increases.

The device with heat exchange provided by the embodiment of the invention distributes the temperature control unit to the machine Different positions of the cabinet, making full use of the internal space of the cabinet which is not effectively utilized by the prior art, can reduce the overall height of the device, thereby reducing the volume of the device, and at the same time reducing the overall increase of the device when the heat consumption of the electronic device increases. Height to meet the evolving cooling needs of the cabinet.

As an alternative embodiment, a through hole is disposed at the top of the cabinet 200, and the conduit 207 connects the first heat exchanger 203 and the second heat exchanger 205 through the through hole.

As an alternative embodiment, the first heat exchanger 203 is disposed on a door of a side wall that is the largest distance from the electronic device 201.

Specifically, the first heat exchanger 203 may be disposed on a door of any side wall of the cabinet. If the cabinet 200 has only one door, the first heat exchanger is necessarily disposed on the door, if the cabinet 200 With at least two doors, the first heat exchanger 203 can be placed on the door of the side wall that is the largest distance from the electronic device 201.

It should be understood that the first heat exchanger 203 is disposed on the door of the side wall of the cabinet 200, and the door opening can be implemented to facilitate maintenance of the electronic device 201 in the cabinet 200. After the door is closed, the inner circulation fan 202 and the first heat exchanger are closed. 203 closed ventilation.

As an alternative embodiment, the first heat exchanger 203 is used to convert hot air flowing through into cold air, and the first heat exchanger 203 includes an evaporator.

It should be understood that the first heat exchanger includes, but is not limited to, an evaporator, and any device that can convert the hot air flowing through into the cold air can be used as the first heat exchanger, which is not limited in the embodiment of the present invention.

As an alternative embodiment, the second heat exchanger 205 is used to convert cold air flowing through to hot air, and the second heat exchanger 205 includes a condenser.

It should be understood that the second heat exchanger includes, but is not limited to, a condenser, and any device that can convert the cold air flowing through into the hot air can be used as the second heat exchanger, which is not limited in the embodiment of the present invention.

As an alternative embodiment, as shown in FIG. 3, the outer portion of the cabinet 200 is further provided with a liquid cooling pump or an air conditioning compressor 208 for cooling.

Specifically, the liquid cooling pump or the air conditioning compressor 208 may be disposed at the outer top of the cabinet 200, and the liquid heat pump or the air conditioner compressor 208 may be used instead of the gravity to drive the heat transfer medium in the heat dissipation flat tube in the first change. The heater 203 flows between the heat exchanger 203 and the second heat exchanger 205.

It should be understood that only the liquid cooling pump or the air conditioning compressor 208 is shown below the second heat exchanger 205 in FIG. 3, and optionally, the liquid cooling pump or the air conditioning compressor 208 may also be disposed in the second heat exchange. 205 The embodiment of the present invention is not limited thereto, and is disposed according to the size of the liquid cooling pump or the air conditioning compressor 208 and the second heat exchanger 205.

In the embodiment of the present invention, by adding a liquid cooling pump or an air conditioning compressor on the basis of the original solution, the temperature in the cabinet can be lower than the external temperature, and rapid cooling can be realized, the heat dissipation capability of the device can be greatly improved, and the cabinet can be continuously evolved. Cooling requirements.

As an alternative embodiment, the first heat exchanger 203 or the second heat exchanger 205 comprises fins which are plate finned, tube fin or sleeve type. It should be understood that the first heat exchanger 203 may be an evaporator and the second heat exchanger 205 may be a condenser.

Specifically, the first heat exchanger 203 and/or the second heat exchanger 205 may include: a fin and a heat dissipation flat tube, and the fin is disposed between the adjacent two heat dissipation flat tubes, which greatly increases the effective Heat exchange area. The heat dissipation flat tube is filled with a heat transfer medium, and the heat transfer medium may be ammonia, acetone or tetrafluoroethane R134A or the like.

It should be understood that the technical solution of the embodiment of the present invention can be applied to various cabinets that require heat dissipation, for example, an outdoor communication cabinet, a server cabinet, and a wiring cabinet, which are not limited in the embodiment of the present invention.

The term "and/or" in this context is merely an association describing the associated object, indicating that there may be three relationships, for example, A and / or B, which may indicate that A exists separately, and both A and B exist, respectively. B these three situations. In addition, the character "/" in this article generally indicates that the contextual object is an "or" relationship.

The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any equivalent person can be easily conceived within the technical scope of the present invention by any person skilled in the art. Modifications or substitutions are intended to be included within the scope of the invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

A device having heat exchange, characterized in that the device comprises a cabinet (200), and the cabinet (200) is provided with an electronic device (201), an inner circulation fan (202) and a first heat exchanger (203). The inner circulation fan (202) is disposed above the electronic device (201), and the first heat exchanger (203) is disposed on a door of a side wall of the cabinet (200); An air guiding structure (204) is disposed between the inner circulation fan (202) and the first heat exchanger (203), and the inner circulation fan (202) allows air in the cabinet (200) to pass through The wind guiding structural member (204) flows through the first heat exchanger (203);

The outer top of the cabinet (200) is provided with a second heat exchanger (205) and an outer circulation fan (206), wherein the first heat exchanger (203) and the second heat exchanger (205) pass The conduit (207) is connected and contains a communicating heat transfer medium, and the conduit (207) causes the heat transfer medium to be in the first heat exchanger (203) and the second heat exchanger (205) Circulating flow to achieve heat exchange.
The apparatus according to claim 1, wherein a top of the cabinet (200) is provided with a through hole, and the duct (207) is connected to the first heat exchanger (203) through the through hole Second heat exchanger (205).
Device according to claim 1 or 2, characterized in that the first heat exchanger (203) is arranged on a door of the side wall which is the largest distance from the electronic device (201).
The apparatus according to any one of claims 1 to 3, wherein the first heat exchanger (203) is for converting hot air flowing through into cold air, the first heat exchanger ( 203) includes an evaporator.
Apparatus according to any one of claims 1 to 4, wherein said second heat exchanger (205) is for converting cold air flowing therethrough into hot air, said second heat exchanger ( 205) includes a condenser.
The apparatus according to any one of claims 1 to 5, characterized in that the outer top of the cabinet (200) is further provided with a liquid cooling pump or an air conditioning compressor (208), the liquid cooling pump or the air conditioning compressor (208) For refrigeration.
Apparatus according to any one of claims 1 to 6, wherein said first heat exchanger (203) or said second heat exchanger (205) comprises fins, said fins being plates Wing, tube wing or sleeve type.
The apparatus according to any one of claims 1 to 7, wherein the heat transfer medium is ammonia, acetone or tetrafluoroethane R134A.