Device of conditioning for cooling of air in cabinet for electronic devices

IPC classes for russian patent Device of conditioning for cooling of air in cabinet for electronic devices (RU 2515530):

H05K7/20 - Modifications to facilitate cooling, ventilating, or heating

G12B15/00 - Cooling (by refrigeration, e.g. circulation of refrigerated fluid, F25D; heat-exchange or heat-transfer details of general application F28F)

G06F1/20 - Cooling means

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/ 2347259

/ 2341833

/ 2327237

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System comprises a first space defined by a floor, one or more lateral walls, and a roof; one or more openings located on the roof or at least one or more lateral walls; an enclosure installed within the first space, the enclosure defining a second space in fluid communication with upper regions of the inside space; and a rack installed in the first space and touching the enclosure in a sealed manner, wherein the rack is fitted with one or more units, one or more cooling fans operable to draw air from the first space through the front faces of the one or more rack-mounted units and expel heated air through the back faces of the one or more rack-mounted units to the second space.

FIELD: heating.

SUBSTANCE: invention relates to a device of conditioning for air cooling in a cabinet for electronic devices. The conditioning device comprises a body with the first side and the second side, opposite to the first side, a device for air supply and a heat exchanger. The device for air supply sucks air at the first side, sends it via the heat exchanger to the second side and releases it in the radial direction at the second side. The heat exchanger is connected with the inner or outer cooling device for supply of cooled cooling medium into the heat exchanger.

EFFECT: provision of efficient open air cooling of electronic devices in adjacent cabinets for electronic cabinets, at which the radially discharged air flow almost without preliminary mixing with hot air and accordingly without reduction of efficiency factor may be sucked by cabinets for electronic devices and used for cooling.

9 cl, 16 dwg

The technical field to which the invention relates.

The invention relates to the conditioning unit to cool the air in the Cabinet for electronic devices or the like

The level of technology

In data centers and industrial plants is widely used electronic devices in the cabinets (also known as "the stand"), which have a standard step size, such as 19 inches. Often, these cabinets have sufficient space to accommodate the many electronic devices, tightly installed one above the other. For the operation of these electronic devices along with the supply of electrical energy and data necessary to provide sufficient cooling. For cooling are commonly used air-handling units that serve essentially for generating cooling air, which by means of devices for supply air, located in the electronic device, is passed through an electronic device and selects the warmth of electronic components. By increasing the concentration of computing power per unit of space is constantly increasing, the need for effective conditioning equipment that can reliably and long to produce sufficient cold cool is his air, but without too much workspace. Usually known air-handling units are equipped with simple cooling mechanisms, which are based, for example, in the cooling circuit with the evaporator.

In modern data centers in the same room is full of rows consisting of neighboring each other cabinets for electronic devices and separated from each other by passages, while the front part of the cabinets for electronic devices of one series may be directed to the front parts of enclosures for electronic devices adjacent rows. The front part of the cabinets often contain air inlets that are designed for suction of cold air from the so-called ”cold channel. The air heated electronic components, exits through the back of the cabinets for electronic devices and enters the so-called “warm channel. This should be available at least one air conditioning unit, which directs the cold air in the cold channels, such as chilled air taken from the warm channel. There is a method of blowing cold air in cold channel through the outlet opening in the floor. Also known installation method of conditioning equipment between cabinets for electronic devices, with the cold air VD is provided from conditioning equipment perpendicular to the front of the adjacent cabinets for electronic devices. This system is an open-air cooling system.

Also known closed system. In their Cabinet for electronic device and the specified conditioning unit are in a closed casing or in the General case.

Lack of conditioning devices of the prior art is that the air cooled units air-conditioning, open air cooling system, not perfect is supplied to the cooling of electronic devices. Prepared by cooling the air when using the known discharge devices is mixed with the heated air before it eventually will be absorbed into the front part of the cabinets for electronic devices, in order to cool electronic devices.

Disclosure of inventions

Thus, the object of the invention is the provision of a device of the above type, which will reduce or completely eliminate the above mentioned disadvantages. In particular, the object of the invention is the provision of air-handling unit, which is constructed as a separate independent unit, however, especially now directs the cooled air enclosures for electronic devices, so the supplied cooling air may be supplied directly to a separate electronic device is am for their cooling.

This task is solved by means of air-handling unit with the features of independent claim 1 of the claims. Preferred embodiments of described in the dependent claims.

According to the first aspect of the invention, the conditioning device according to the invention includes a housing with a first side and a second side and is intended to be the first side to suck air, and from the second side to blow the cooled air. While the first side and the second side of the conditioning device according to the invention are located opposite each other, so the air conditioning unit according to the invention can be installed between cabinets for electronic devices and to receive a second side of the cooling air for use in cabinets for electronic devices. This is particularly effective for an open-air cooling system with warm and cold channels between the rows of cabinets for electronic devices that are located opposite each other.

In accordance with the second aspect of the invention the second side of the conditioning device according to the invention includes a device for air supply, which directs cooling air to the outside in the radial direction. Thus the radial direction should be understood as the direction, p is the substance, perpendicular to the axis between the first party and the second party. In accordance with this from the first axial side of the input air stream enters the air conditioning unit according to the invention, which creates a radially directed outlet flow of air on the other side.

In accordance with a third aspect of the invention between the first side and the second side of the conditioning device according to the invention is a cooling device that cools the inlet axial flow of air before it exits the machine-conditioning in the radial direction.

Thus, the conditioning device according to the invention, essentially, can provide a flow of cooling air to the outdoor air-cooled systems. To obtain a particularly effective output of the air flow, which provides the perfect flow to neighboring electronic devices, the depth of the conditioning device according to the invention are preferably chosen so that the device for air supply or air exhaust air-handling unit according to the invention acted out relative to the front portions of adjacent cabinets for electronic devices, or to set the device to supply air to the second side of the air-handling unit to solenoidality is thus relative to the front plane of the adjacent cabinets for electronic devices in the axial direction, to radial flow was held parallel to the end faces of the adjacent cabinets for electronic devices at a slight distance from them. It is particularly preferable to facing the cooling air flow tended to run along the front surfaces of adjacent cabinets for electronic devices and stick to these surfaces, and not to separate from them to continue in the original direction. Effect of adhesion of the stream known as the Coanda effect by name opened his scientist Henri Coanda. Because of this adhesion flow radially facing the cooling air flow is not distributed freely in the room containing lots of cabinets for electronic devices, where it can be mixed with warm air, and is served enclosures for electronic devices, neighboring conditioning unit according to the invention, for example, to their front parts, directly in the form of a stream of cold air, thus the corresponding device to supply air in the cabinets for electronic devices directly receive almost exclusively clean the cooling air, which can be used for cooling electronic devices.

Despite the fact that outdoor air cooling is implemented with independent separate device is additionalone, the effectiveness of the conditioning device according to the invention compared to known devices of the air conditioning is significantly increased, as produced by the cooling capacity does not have to spend on permanent losses associated with mixing with the warm air, instead, almost all of the cooling power is allocated to the conditioning unit, can be used for cooling electronic devices.

Another particular advantage of the design of the conditioning device according to the invention is that the cooling system containing multiple conditioning equipment, you can very easily scale as, for example, near local sources of very high thermal loads (so-called "hot spots"), you can easily install additional air-handling unit according to the invention, which can directly submit additional cooling air, without requiring modification of the electronic media device.

In one preferred embodiment of the invention the device for air supply is made in the form of a radial fan, which extends outward from the second side of the conditioning device according to the invention, therefore, to display an axial air flow, which post the AET in the air conditioning unit, in the radial direction parallel to the boundary surface of the second side.

The device for air supply preferably with adjustable rotation speed and, therefore, the generated air flow, allowing you to individually adjust the cooling capacity and bring it to the cooling device. Especially suitable for drive fans are brushless DC motors, because they are especially effective and have a high efficiency even at full load.

Device air-conditioning according to the invention particularly preferably contains at least one temperature sensor, which is installed in such a way as to measure the temperature leaving the cooling of the incoming air or heated air. Because of this, implementing a management option for speed control device for air supply and/or cooling capacity.

In a preferred embodiment, the conditioning device according to the invention contains at least one device at least one temperature sensor, which is located adjacent to the cooled device. The temperature measured on the reverse side of an adjacent cooled device is Ista, which is usually a Cabinet for electronic devices or electronic device in a Cabinet for electronic devices, can be used to control the volumetric flow of air and/or heat exchanger. Using feedback of the temperature measured in the neighboring device can be, for example, to exclude submission of insufficient cooling capacity cooling especially powerful devices.

In one preferred embodiment of the invention on the second side of the conditioning device according to the invention is distributed multiple radial fans, thus, over the entire height of the design of the conditioning device according to the invention occurs the maximum possible uniform radial air flow. In addition, each of these radial fans preferably can provide individual control of temperature of the incoming or outgoing air at the height of the structure using individual speed control or regulation of the generated air flow in order to be able to respond to individual cooling requirements. For this purpose, the height of the conditioning device according to the invention it is possible to install multiple temperature sensors to ensure that the individual is thanku temperature on the height of structures in accordance with the cooling requirements. In a particularly preferred embodiment, the heat exchanger contains multiple segments, with each radial fan has its own individually controlled segment of the heat exchanger. Thus, it is possible to individually control both the air volume flow rate of each of the radial fan, but also the related segment of the heat exchanger.

In one preferred variant of the invention, the air conditioning unit contains the second-side protruding frame, which is equipped with a device for air supply. This frame serves to protect the device to supply air from mechanical damage, as it is according to the invention is separated some distance from the common front plane of the adjacent cabinets for electronic devices and therefore can be susceptible to damage due to negligence. This prominent frame preferably has a lattice covering, which provides lateral cooling air outlet.

According to a preferred variant of the invention, the air conditioning unit includes pipelines that serve the specific orientation and harmonization facing the cooling air. They can be installed, for example, in the above-mentioned protruding frame, namely, on her side on which ernostar. These pipelines can also be used to completely block the radial conclusion of cooling air from one side of the conditioning device according to the invention in case the Cabinet for electronic devices is located only on one side of the air-handling unit.

According to a preferred variant of the invention, these pipelines can be oriented so that, if possible, ideally to implement the Coanda effect, for example, by using a stronger concentration of the exiting air stream or by adjusting for possible curvilinear portions of the front parts of the neighboring cabinets for electronic devices.

According to a preferred variant of the invention, the air conditioning unit includes a cooling device that can cool the incoming warm air. The cooling device may be an independent device for the active generation of cooling energy, which is installed, for example, directly inside the air-handling unit according to the invention. An alternative to this, the cooling unit may be performed only in the form of a heat exchanger, which is fed centrally cooled in another part of the cooling medium that is cooled passing warm air.

When using the active cooling device is preferably equipped with a compressor with variable speed. This allows you to adjust the cooling capacity of, making it possible to reduce the cost of energy and further increase the energy efficiency of devices. Through the use of brushless DC motors even at full load ensures a very high efficiency.

The speed control of fans and compressors can be implemented using one Central control unit, which can be monitored and controlled by the control unit. When the control unit may set the voltage for managed components, this alternative is the frequency of the voltage or next alternative is to set the adjustable parameter, which compares the Autonomous control units in managed components or in the vicinity of managed components with the actual values for the control.

Brief description of drawings

Other characteristics, advantages and possible applications of the present invention are presented in the following description of embodiments and are illustrated by drawings. In this case, all described and/or illustrative presents the signs of the individual is about and in any combination form the subject matter of the invention, including regardless of their combination in the individual claims or their relationship. While the same or similar objects on the drawings are denoted by the same numbers.

In figures 1A, 1b, 1c, 1d, 1e and 1f shows the first embodiment of the conditioning device according to the invention.

In figures 2A, 2b, 2c, 2d, 2e and 2f shows a second exemplary embodiment of the conditioning device according to the invention.

In figures 3A, 3b, 3c and 3d is a schematic diagram of the conditioning device according to the invention, while figure 3d) air conditioning unit according to the invention shown in the inline position.

The implementation of the invention

Figure 1A shows the view from the first side of the device 2 conditioning according to the invention. The conditioning device 2 contains an air-liquid heat exchanger 4, which by means of pipes 6 connected with a not shown Central cooling unit for supplying the cooled cooling medium. The air by means of a radial fan 10 to be used as devices for supply air, is sucked into the device 2 air conditioning on the first side 8, as shown to the right on the back view of the conditioning device 2 according to the invention, passes through the heat exchanger 4, which is ohla the giving environment, is cooled and exits the conditioning device 2 through the holes 12 in the rear wall of the conditioning device 2 according to the invention. This means that air flows from the first side 8 of the device 2 conditioning according to the invention, cooled, passes in the direction of the second side 14 of the device 2 conditioning according to the invention, there it is deflected radial fan 10 is essentially 90°, i.e. essentially parallel to the second side 14, and exits the device 2 air-conditioning.

The holes 12 may be made in the form of a lattice with holes, which covers part of the conditioning device 2 according to the invention in order, for example, to protect the fan 10 from damage.

The conditioning device 2 according to the invention is preferably made with the possibility of its installation between cabinets for electronic devices, or near them, with the front discharge region 16 with side holes 12 explicitly removed in space from the front of the cabinets for electronic devices, so the air coming through the holes 12 in the lattice, can be carried along the front of the cabinets for electronic devices and stick to it. Due to the Autonomous design of air-handling unit according to the invention, for the implementation of obanno efficient cooling does not require any modifications of the neighboring cabinets for electronic devices.

Front view of the conditioning device 2 according to the invention in the figure 1b shows that in case of relatively small width can provide a particularly effective cooling of the adjacent cabinets for electronic devices. The conditioning device 2 according to the invention compared with conventional cabinets for electronic devices requires very little width.

As shown in figure 1C, the inclined heat exchanger 4 is installed inside the device 2 conditioning according to the invention, therefore passing the air may cover a relatively large surface of the heat exchanger 4.

Next on the figure 1d shows a top view, on which you can see the components of the conditioning device according to the invention with figures 1A-1C, this is especially clearly seen that the heat exchanger 4 is installed obliquely, i.e. at an angle to the axis between the first side 8 and the second side 14. Because of this, due to particularly good use of the available volume, you can maximize the active surface of the heat exchanger 4.

Finally, in figures 1E and 1f shows the first embodiment of the conditioning device 2 according to the invention in two different isometric projections. For clarity, the grating 12 is removed, which opens up a view of the fan 10. For protection from damage and contamination of the first sides is 8 closed safety bars 18, which may be, for example, are suspended on ball bearing hinges 20 in order to provide access to the pipes 6 and other components of air-handling unit. And, finally, to the management device 2 conditioning according to the invention on the second side 14 is a control block 22, which may be controlled, for example, the location of the valves of the pipes 6 to individually, in accordance with the need to regulate the passage of the cooling medium and thus the cooling capacity.

Pipelines 6 includes, for example, the base 24 and rise to the top cover 26, so connecting pipelines can be used above or below the conditioning device 2 according to the invention.

In figures 2A-2f illustrates a second example implementation of the device 28 conditioning according to the invention, which essentially differs from the conditioning device 2 according to the invention in the first embodiment, a built-in compact active cooling device 30. It is particularly preferable for small data centers or free-standing cabinets for electronic devices in a production environment where the application of the Central refrigeration plant to provide heat exchangers cooled cooling medium is economic is impractical. The basis of the cooling device 30, shown here only schematically, can be used, for example, known from household refrigerators refrigeration circuit with the evaporator. In air-to-liquid heat exchanger 32 of the cooling device 30 is served chilled liquid, so the air flow passing from the first side 8 of the second side 14, is subjected to cooling. As shown, the air-liquid heat exchanger 32 due to the lack of free space can be located not inclined inside 28-conditioning according to the invention, since the cooling device 30 may take the mounting space required for inclined installation of the heat exchanger, however, it is possible to compensate for the increased depth of the air-liquid heat exchanger 32.

In this second embodiment, the device 28 conditioning according to the invention may also have a relatively small width compared with the conventional cases for electronic devices, as seen in figure 2b.

Finally, in figures 2E and 2f of the second exemplary embodiment of the device 28 conditioning according to the invention is presented in two different isometric projections, which show the inner construction.

As stated above, the principle of the invention is based on the fact that the device 2 or 28 to which diciannove according to the invention provides open air cooling of electronic devices, located in neighbouring enclosures for electronic devices, however, it eliminates the disadvantages of known devices current level of technology. This can be done due to the fact that the discharge region 16 of the device 2 or 28-conditioning according to the invention is separated from the front parts of the neighboring cabinets for electronic devices, and the cooled air out radially along the front portions of these adjacent cabinets for electronic devices. The cooling air passes directly along the front parts of enclosures for electronic devices and should only be absorbed in the appropriate cabinets for electronic devices, to provide cooling. This principle according to the invention uses the Coanda effect, which describes the adhesion of the thread to the planes.

Figures 3A-3d further clarify this principle. In figures 3A-3c show examples of the implementation of the device 2 or 28-conditioning according to the invention in schematic form. The first side 8, i.e. the rear side of the device 2 or 28-conditioning according to the invention, is directed to the so-called "warm channel" with the spent heated cooling air, while the second side 14, i.e. the front side, directed toward the "cold channel with fresh cooled cooling air. Can the Department is actively measure the temperature of the incoming air by means of the temperature sensors 9, to the extent necessary to adjust the speed of rotation of the centrifugal fan 10. Figure 3b shows several temperature sensors 9, which are distributed over the height of the conditioning device 2 according to the invention and, thus, enable an individual to regulate the speed of rotation of all centrifugal fans. An alternative to this or in addition you can also set one or more temperature sensors on the outlet side of the heat exchanger. Especially, it is preferable to set the temperature sensors at different heights on the rear side cooled neighboring cabinets for electronic devices and to use the received temperature data there for regulating the overall or individual speed centrifugal fan 10 and/or if each fan preferred way has its own separately controlled segment of the heat exchanger is also individually control the segments of the heat exchanger.

In conclusion, figure 3d shows the device 2 or 28-conditioning according to the invention installed between two cabinets for electronic devices 34, along the front portions 36 which cold air is blown from the centrifugal fan 10 and according to the Coanda effect sticks to these end faces.

Examples of the implementation of the disorder conditioning according to the invention is particularly effective thanks to Coanda effect for radially extending cooling air. This should indicate that the air conditioning unit according to the invention is not limited to the described embodiments. Moreover, the subject invention is any possible modification of technical performance with devices for supply air, located more or less on top of each other or next to each other, with different internal or external cooling devices, the performances of the heat exchangers and aerodynamic details.

1. The device (2, 28) conditioning for cooling air in a Cabinet for electronic devices, comprising: a housing with a first side (8) and second side (14), opposite the first side (8), the device (10) for air supply and the heat exchanger (4, 32), the device (10) for supplying air sucks the air from the first side (8), sends it through a heat exchanger (4, 32) to the second side (14) and releases the air in the radial direction from the second side (14), while the heat exchanger (4, 32) connected to an external cooling unit or with an internal cooling device (30) for supplying the heat exchanger (4, 32) chilled cooling medium, and a device (10) for air supply is made in the form of a radial fan, which extends outward from the second side (14) of the mouth of the STS (2, 28) air conditioning and is located on the possibility of showing the axial flow of air entering the device (2, 28) air-conditioning in the radial direction parallel to the boundary surface of the second side (14).

2. The device (2, 28) conditioning on p. 1, characterized in that it contains several spaced from each other and located at different heights device (10) for air supply.

3. The device (2, 28) conditioning on p. 2, characterized in that the heat exchanger contains several individually controllable segments of the heat exchanger located at different heights.

4. The device (2, 28) conditioning on p. 1, characterized in that it contains also the protruding frame, in which there is a device (10) for air supply.

5. The device (2, 28) conditioning on p. 1, characterized in that it contains at least one pipe (6)connecting the heat exchanger (4, 32) with a Central cooling unit.

6. The device (2, 28) conditioning on p. 1, characterized in that is provided to regulate air flow created by the device (10) for air supply.

7. The device (2, 28) conditioning on p. 2, characterized in that provided an opportunity for individual regulation of the air flow generated by each device (10) DL the air supply.

8. The device (2, 28) conditioning on PP. 6 or 7, characterized in that it contains at least one temperature sensor (9, 11) for measuring the temperature of the incoming and/or outgoing air on the back side of the refrigerated Cabinet for electronic devices, on the rear side of the air-handling unit or on the output side of the heat exchanger.

9. The device (2, 28) conditioning on p. 8, characterized in that it contains several temperature sensors that measure the temperature at different heights, and the measured temperatures are used for individual regulation of the volumetric flow of air and/or segments of the heat exchanger.