Heat dissipation system

The present invention relates to a heat dissipation system. The heat dissipation system includes: a chassis, configured to house single boards of an orthogonal architecture, where the single boards includes a vertically inserted board; a first fan group, installed inside a first air intake pipe in the upper front of the chassis and configured to guide air into the chassis; and an air guide cavity, installed inside the chassis and configured to transfer the air that is guided by the first fan group into the chassis to a component on the vertically inserted board to perform heat dissipation. With the heat dissipation system in embodiments of the present invention, air is separately supplied to a heat dissipation component on a vertically inserted board in a communications system device based on an orthogonal architecture.

TECHNICAL FIELD

The present invention relates to the field of communications devices, and in particular to a heat dissipation system having a U-shaped or π-shaped air duct and based on an orthogonal architecture of single boards.

BACKGROUND

An orthogonal architecture is a kind of connection structure popularly used in a current communications system to connect a main control component and several functional components. Such orthogonal architecture of single boards may be implemented by using a single board arrangement manner of vertically inserting a front board and horizontally inserting a rear board, or horizontally inserting a front board and vertically inserting a rear board. In the foregoing implementation manner, a heat dissipation system generally uses design of a Z-shaped air duct. By taking a manner of horizontally inserting a front board and vertically inserting a rear board as an example, as shown inFIG. 1, single boards include a front board11and a rear board12, which are respectively inserted on two sides of a backplane14in a chassis10. The front board11is horizontally inserted, and the rear board12is vertically inserted. When the system works, a fan15blows air outward so as to drive air from an air intake vent13at a bottom of the chassis10to enter the chassis10. In a direction indicated by arrows shown inFIG. 1, air passes through heating components121,122, and123on the rear board12, then passes through heating components124,125, and126, and is blown outward by the fan. In this way, temperature concatenation between an upper component and a lower component on the rear board is formed, thereby directly affecting a heat dissipation effect of the heating components124,125, and126close to a top. In addition, because the system uses design in which air enters from the bottom and exits from the top, a 4U air intake vent space and a 4U air outlet space need to be reserved, thereby occupying a relatively large space area.

SUMMARY

A first objective of the present invention is to solve a problem in the prior art that a heat dissipation effect is poor due to temperature concatenation between an upper component and a lower component on a vertically inserted board in a heat dissipating process.

A second objective of the present invention is to solve a problem in the prior art that a heat dissipation system occupies a large space.

According to a first aspect, the present invention provides a heat dissipation system, including:

a chassis, configured to house single boards of an orthogonal architecture, where the single boards includes a vertically inserted board;

a first fan group, installed inside a first air intake pipe in the upper front of the chassis and configured to guide air into the chassis; and

an air guide cavity, installed inside the chassis and configured to transfer the air that is guided by the first fan group into the chassis to a component on the vertically inserted board to perform heat dissipation.

According to a second aspect, the present invention provides a heat dissipation system, including:

a chassis, configured to house single boards of an orthogonal architecture, where the single boards includes at least a first vertically inserted board and a second vertically inserted board that are stacked;

a third air intake pipe and a fourth air intake pipe, where the third air intake pipe is located above the first vertically inserted board, and the fourth air intake pipe is located below the second vertically inserted board, so that air enters the chassis after passing through the third air intake pipe and the fourth air intake pipe;

an air outlet, disposed in the middle rear of the chassis and configured to discharge air inside the chassis; and

a fan group, installed inside the third air intake pipe and the fourth air intake pipe, and/or the air outlet, and configured to absorb air from the third air intake pipe and the fourth air intake pipe and/or discharge air from the air outlet.

An arrangement structure of the third air intake pipe, the fourth air intake pipe, the first vertically inserted board, and the second vertically inserted board, matched with the air outlet, enables air in the third air intake pipe and the fourth air intake pipe to respectively pass through the first vertically inserted board and the second vertically inserted board and then to be discharged by the air outlet.

By applying the heat dissipation system provided in embodiments of the present invention, air is separately supplied to a heat dissipation component on a vertically inserted board in a communications device based on an orthogonal architecture, thereby breaking through temperature concatenation between an upper component and a lower component, and at the same time, saving a heat dissipation space and improving a heat dissipation capability of the system.

DETAILED DESCRIPTION

The technical solutions of the present invention are described in further detail in the following with reference to the accompanying drawings and embodiments.

With a heat dissipation system provided in an embodiment of the present invention, an air ducting apparatus is used to separately supply air to each of heating components serially connected on a vertically inserted board in a communications device based on an orthogonal architecture, thereby breaking through temperature concatenation between an upper component and a lower component. In addition, a heat dissipation capability of the vertically inserted board is improved and a height of the heat dissipation system is reduced by using a U-shaped air duct structure, or a better heat dissipation effect is achieved by using a π-shaped air duct structure.

To facilitate description, in the accompanying drawings of the following embodiments, a left side is defined as a front side of a chassis, a right side is a rear side of the chassis, a front-view direction in each schematic diagram is a left-side direction of the chassis, and all schematic diagrams are sectional views. In the following description, each embodiment and each schematic diagram are described according to directions defined herein, which are not described again.

FIG. 2is a side view of a sectional structure of a heat dissipation system with a U-shaped air duct according to a first embodiment of the present invention. As shown inFIG. 2, the heat dissipation system in the first embodiment includes: a chassis20, an air guide cavity23, and a first fan group25.

The chassis20is of a rectangular structure. A first air intake pipe in which the first fan group25is installed is reserved at a front top of the chassis20, and multiple cooling holes (not shown in the figure; and reference is made to arrows shown on a rear side of the chassis) may exist on the rear side of the chassis20. A horizontally inserted board21and a vertically inserted board22are disposed inside the chassis20, and are inserted with each other through a backplane24or directly inserted with each other to form an orthogonal architecture.

The air guide cavity23is disposed between two vertically inserted boards22, and may be installed on a framework of the chassis20or installed on the vertically inserted board22. An opening on a top of the air guide cavity23is connected to the first air intake pipe in which the first fan group25is installed. A shape of the air guide cavity23may be a column, a terrace, or a customized irregular shape. In an example, as shown inFIG. 2, the air guide cavity23is of a columnar structure, and multiple side-wall holes (not shown in the figure; and reference may be made to positions of arrows of the air guide cavity pointing to the vertically inserted board) that are toward a rear direction of the chassis exist on a side wall. In another example, as shown inFIG. 2a, the air guide cavity23is of a terrace structure, its four sides: front, rear, top, and bottom are rectangles; its two sides: left and right are trapezoids; multiple side-wall holes that are toward a rear direction of the chassis exist on a side wall of the air guide cavity23; and in addition, multiple wall holes that are directly toward heating components of a rear board may further exist, so that it is convenient to directly supply air to the heating components, thereby enhancing a heat dissipation effect.

When the heat dissipation system works, the first fan group25drives air from outside the chassis20, so that the air is absorbed into the chassis20through the first fan group25, passes through the first air intake pipe, and enters the air guide cavity23. The air is directly blown through the multiple side-wall holes of the air guide cavity23towards heating components221to226on the vertically inserted board22, so that the air is separately supplied to each heating component to facilitate heat dissipation of the component. Then the air is discharged from the cooling holes (not shown in the figure; and reference is made to the arrows shown on the rear side of the chassis) on the rear side of the chassis20. The foregoing air duct through which a cooling air flow passes is of a U-shaped structure. If the cooling holes on the rear side of the chassis20are insufficient or cannot be drilled or an air discharge volume needs to be increased, as shown inFIG. 2aandFIG. 2b, an air duct on a top of the chassis may further be utilized to discharge air out of the chassis, thereby increasing the air discharge volume.

An air discharge volume and air discharge direction of a side-wall hole on the air guide cavity23may be controlled by an air volume management apparatus (not shown in the figure). Multiple specific implementation manners of the air volume management apparatus may exist. For example, side-wall holes of different hole diameters or different hole quantities are disposed; or an air discharge volume is controlled by using an air volume regulating valve and controlling an opening size and an angle of the regulating valve.

In a case that a volume of air entering the air guide cavity23is sufficient, pressure inside the air guide cavity23is relatively high, and without being affected by air discharge loss, the air guide cavity23forms a pressure-equalized cavity. In a case that hole diameters of various air discharge holes are the same, air discharge volumes of the air discharge holes are also the same. In this case, in combination with the air volume management apparatus, different air discharge volumes may be provided conveniently according to different amounts of heat generated by various heating components, so that air is separately supplied to each component to perform heat dissipation.

In another example, as shown inFIG. 2b, an air guide pipe26exists at a bottom of the air guide cavity23to guide a part of air inside the air guide cavity23to the vertically inserted board22, so that the part of air is discharged from bottom to top along the vertically inserted board22. With such U-shaped air duct design, an air flow from bottom to top carries an air flow that is directly blown from a side-wall hole of the air guide cavity23towards a heating component, which helps the air flow flows towards an upper air outlet faster. At the same time, air may also be separately supplied to a component (such as an optimal module) behind221to226, thereby improving temperature concatenation and achieving a better heat dissipation effect.

With the solution in the first embodiment of the present invention, by using design of an air guide cavity, a heat dissipation system of a U-shaped structure in which air enters from a top and exits from the top is implemented, so that a lower space is saved and a 4U height is reduced in the terms of space, as compared with a conventional Z-shaped heat dissipation system. At the same time, air is separately supplied to a heating component on a rear board, thereby breaking through temperature concatenation between an upper component and a lower component and achieving a better heat dissipation effect.

When a communications system device uses a high-power single board which imposes a higher heat dissipation requirement, an air intake area and an air discharge area may be expanded on a basis of the first embodiment, and a heat dissipation system of a π-shaped structure is used to greatly improve heat dissipation performance of the system.FIG. 3is a side view of a sectional structure of a heat dissipation system of a π-shaped structure according to a second embodiment of the present invention. As shown inFIG. 3, the heat dissipation system in the second embodiment includes: a chassis30, an air guide cavity33, a first fan group35, a second fan group35′, and an air volume management apparatus (not shown in the figure).

The air guide cavity33and the air volume management apparatus are exactly the same as corresponding apparatuses described in the first embodiment, which are not described herein again.

A first air intake pipe in which the first fan group35is installed is reserved at a front top of the chassis30, and a second air intake pipe in which the second fan group35′ is installed is reserved at a front bottom of the chassis30. In addition to fans, a silencing structure cavity may further be installed inside the first air intake pipe and the second air intake pipe to facilitate noise reduction design of the system. Multiple cooling holes (not shown in the figure; and reference is made to arrows shown on a rear side of the chassis) may exist on the rear side of the chassis30. A first air discharge pipe and a second air discharge pipe are connected to the exterior of the chassis and may also be used for installing a third fan group. A horizontally inserted board31and a vertically inserted board32are disposed inside the chassis30, and are inserted with each other through a backplane34or directly inserted with each other to form an orthogonal architecture.

When the heat dissipation system works, air outside the chassis30is absorbed by the first fan group35and the second fan group35′ into the chassis30, passes through the first air intake pipe and the second air intake pipe, and enters the air guide cavity33from an upper end and a lower end. In this case, pressure inside the air guide cavity33is relatively high and a pressure-equalized cavity is formed. The air is directly blown through side-wall holes of the air guide cavity33towards heating components321to326on the vertically inserted board32, so that the air is separately supplied to each heating component to facilitate heat dissipation of the component. Then the air is discharged from the cooling holes (not shown in the figure) on the rear side of the chassis30and air ducts at a top and a bottom of the rear side of the chassis. In an example, as shown inFIG. 3a, a third fan group36is installed inside the first air discharge pipe and the second air discharge pipe, and is configured to help improve an air discharge volume and an air flow rate, thereby further improving a heat dissipation effect. The foregoing air duct through which a cooling air flow passes is of a lateral π-shaped structure.

With the heat dissipation system of the π-shaped structure, air is separately supplied to a heating component, thereby breaking through temperature concatenation between an upper component and a lower component; and in addition, in a case that an occupied space is the same as that of a conventional Z-shaped heat dissipation structure, both an air intake volume and an air discharge volume of the system are doubled, thereby effectively improving the heat dissipation effect.

When a communications system device uses inserted single boards that have a stacking structure, the π-shaped heat dissipation structure provided in the second embodiment may be simplified to evolve into a π-shaped heat dissipation system applicable to a stacking structure of single boards.FIG. 4atoFIG. 4bare side views of a sectional structure of a heat dissipation system with a π-shaped air duct according to a third embodiment of the present invention. As shown in the figure, the heat dissipation system in the third embodiment includes: a chassis40, a third air intake pipe41, a fourth air intake pipe41′, a third air discharge pipe42, and a fan group43.

The chassis40is of a rectangular structure. The third air intake pipe41and the fourth air intake pipe41′ are respectively reserved at a front top and at a front bottom of the chassis40. The third air discharge pipe42is reserved on a rear side of the chassis40, and is located between a first vertically inserted board44and a second vertically inserted board45. In addition, multiple cooling holes may further exist on the rear side of the chassis40.

In an example, as shown inFIG. 4a, the fan group43is installed inside two air intake vents41and41′. When the heat dissipation system works, the fan group43works and drives air to flow into the chassis40. Air entering the third air intake pipe41passes through the first vertically inserted board44to dissipate heat of a component on the first vertically inserted board44; air entering the fourth air intake pipe41′ passes through the second vertically inserted board45to dissipate heat of a component on the second vertically inserted board45; and then the air is discharged from the third air discharge pipe42. Multiple cooling holes further exist on the rear side of the chassis40to facilitate heat dissipation of the chassis40.

In another example, as shown inFIG. 4b, the fan group43is installed inside the third air discharge pipe42. When the heat dissipation system works, the fan group43works and drives air to flow into the chassis40. Air entering the third air intake pipe41passes through the first vertically inserted board44to dissipate heat of a component on the first vertically inserted board44; air entering the fourth air intake pipe41′ passes through the second vertically inserted board45to dissipate heat of a component on the second vertically inserted board45; and then the air is discharged outside by the fan group43that is disposed in the third air discharge pipe42.

In still another example, the fan group43is installed inside the third air intake pipe41, the fourth air intake pipe41′, and the third air discharge pipe42. The fan group43installed inside the third air intake pipe41and the fan group43installed inside the fourth air intake pipe41′ guide external air into the chassis40. Air entering the third air intake pipe41passes through the first vertically inserted board44to dissipate heat of a component on the first vertically inserted board44; air entering the fourth air intake pipe41′ passes through the second vertically inserted board45to dissipate heat of a component on the second vertically inserted board45; and then the air inside the chassis40is discharged outside by the fan group43that is installed inside the third air discharge pipe42. In this way, air flowing of the heat dissipation system is enhanced and a heat dissipation effect can be further improved.

In the foregoing three examples, two groups of vertically inserted boards44and45share the same air discharge pipe42, thereby saving a certain heat conducting space. By using heat dissipation systems of the foregoing types of π-shaped structures, air is separately supplied to each vertically inserted board in a stacking structure, thereby breaking through temperature concatenation between vertically inserted boards in a stacking structure and effectively enhancing a heat dissipation effect.

When a system has more than two stacked single boards and heat dissipation of multiple single boards is required, a solution of adding an air intake or discharge pipe and a fan on the basis of the foregoing π-shaped heat dissipation system may be used to solve a heat dissipation requirement. A case that three vertically inserted boards are stacked is taken as an example for description.

As shown inFIG. 4c, a communications system includes a first vertically inserted board44, a second vertically inserted board45, and a third vertically inserted board46, which are placed in a stacking manner.

A third air intake pipe41and a fourth air intake pipe41′ are respectively reserved at a front top and at a front bottom of a chassis40. A third air discharge pipe42is reserved on a rear side of the chassis40, and is located between the first vertically inserted board44and the second vertically inserted board45. In addition, a fourth air discharge pipe42′ is further reserved on the rear side of the chassis40, and is located between the first vertically inserted board44and the third vertically inserted board46.

A fan group43is installed inside two air intake vents41and41′. When a heat dissipation system works, the fan group43works and drives air to flow into the chassis40. Air entering the third air intake pipe41is split into two parts after passing through holes on the rear side. One part flows upward to pass through the third vertically inserted board46to dissipate heat of a component on the third vertically inserted board46, and then is discharged by the fourth air discharge pipe42′; and the other part flows downward to pass through the first vertically inserted board44to dissipate heat of a component on the first vertically inserted board44, and then is discharged by the third air discharge pipe42. Air entering the fourth air intake pipe41′ passes through the second vertically inserted board45to dissipate heat of a component on the second vertically inserted board45, and then is discharged by the third air discharge pipe42.

In this way, independent heat dissipation is implemented for each vertically inserted board in three-layer stacking structure, thereby breaking through temperature concatenation between vertically inserted boards in a stacking structure and effectively enhancing a heat dissipation effect. In addition, in the foregoing example, two groups of vertically inserted boards44and45share the same air discharge pipe42, and two groups of vertically inserted boards44and46share the same air intake pipe41, which also saves a certain heat conducting space.

According to the heat dissipation systems of the foregoing types of π-shaped structures provided in the embodiments of the present invention, a π-shaped heat dissipation system that is applicable to an architecture of stacking more single boards and supplies air separately to each vertically inserted board may be easily expanded.

Although the embodiments of the present invention are discussed in detail by using an example that a horizontally inserted board is on a front side of a chassis and a vertically inserted board is on a rear side of the chassis, it should be noted that the present invention is also applicable to a scenario in which a vertically inserted board is on the front side and a horizontally inserted board is on the rear side.

In the foregoing specific embodiments, the objectives, technical solutions, and beneficial effects of the present invention are described in further detail. It should be understood that the foregoing descriptions are merely specific embodiments of the present invention, but are not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention shall all fall within the protection scope of the present invention.