CN203467116U - Cabinet air-conditioning system - Google Patents

Cabinet air-conditioning system Download PDF

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Publication number
CN203467116U
CN203467116U CN201320612938.XU CN201320612938U CN203467116U CN 203467116 U CN203467116 U CN 203467116U CN 201320612938 U CN201320612938 U CN 201320612938U CN 203467116 U CN203467116 U CN 203467116U
Authority
CN
China
Prior art keywords
air
unit
conditioning
heat exchanger
rack
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn - After Issue
Application number
CN201320612938.XU
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Chinese (zh)
Inventor
万炯
张汉波
马骏峰
马兴原
黄永炎
崔琼梅
郑超
石铸
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Euroklimat Air Conditioning and Refrigeration Co Ltd
Original Assignee
Guangdong Euroklimat Air Conditioning and Refrigeration Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong Euroklimat Air Conditioning and Refrigeration Co Ltd filed Critical Guangdong Euroklimat Air Conditioning and Refrigeration Co Ltd
Priority to CN201320612938.XU priority Critical patent/CN203467116U/en
Application granted granted Critical
Publication of CN203467116U publication Critical patent/CN203467116U/en
Withdrawn - After Issue legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a cabinet air-conditioning system comprising a cabinet and an air-conditioning machine set. The cabinet comprises at least one device area and at least one machine set area which is arranged at one side of the device area and is for installing the air-conditioning machine set. The air-conditioning machine set is at least partially arranged in the machine set area. The back sides and the front sides of the device area and the machine set area are respectively provided with a cabinet front side plate and a cabinet back side plate. A cabinet separator plate is detachably arranged between the device area and the machine set area. The air-conditioning machine set comprises a blower fan and a heat exchanger, wherein the blower fan is arranged at one side of the heat exchanger. The separator plate, corresponding to the heat exchanger, is provided with a cabinet return air port. The cabinet front side plate or the cabinet separator plate is provided with a cabinet air inlet. When the air-conditioning machine set is arranged inside the cabinet, the air-conditioning machine set carries out refrigeration directly on a server device; compared with a traditional cabinet air-conditioner, the refrigerating efficiency of the air-conditioning system is improved; and installation and maintenance work is done conveniently, and construction cost and material cost can be reduced.

Description

Air-conditioning
Technical field
The utility model relates to air-conditioning technical field, relates in particular to a kind of machine room server cabinet air-conditioning system.
Background technology
Modern data is concentrated cybertimes greatly, the miniaturization of computer, rack, the slimming of server, blade.Their feature is that volume is more and more less, and still, electronic power density is but in continuous increase.Under this condition, the refrigerating system in machine room is being born increasing test.
Cabinet air conditioner is for communication field application, to design specially, as solved the heat dissipation problems such as outdoor communication cabinet, Wireless outdoor cabinet base station, storage battery cabinet.Be mainly used in taking away electric component and consume the heat that electric energy sends, for all kinds of interior of equipment cabinets provide desirable humiture environment, isolate the dust in external environment, corrosive gas simultaneously, extended the useful life of electric component, improved machine system operational reliability.Product is applicable to electric control box, communication, communication equipment, data processing case and heavy motor device control cabinet etc.
Traditional cabinet air conditioner is actual is air conditioner in machine room, and it is by regulating machine room bulk temperature to guarantee that server apparatus operating ambient temperature is suitable.But the general position of placing away from server cabinet of air conditioner in machine room, blows by air supply duct, air-supply static pressure is high, and the power consumption of blower fan is high; In addition, because air conditioner in machine room is to regulate machine room bulk temperature, but heat the largest source is server cabinet, so in order to guarantee the ambient temperature of server apparatus operation in rack, need to the bulk temperature adjusting of machine room is very low, so, the utilance of air-conditioning is reduced.
In prior art, also have a kind of cabinet air conditioner, it is arranged at air-conditioning unit between adjacent service device.For example, Chinese patent literature CN102681637A discloses a kind of " the server cooling machine cabinet refrigerating system of generating heat on a large scale ", as shown in Figure 1, it comprises server cabinet 100 and refrigerating units 200, described refrigerating units 200 is arranged between adjacent two-server rack 100, and described refrigerating units 200 comprises heat exchanger 201 and is arranged on the axial flow blower 202 of heat exchanger side.This kind of way is generally to implement after server cabinet installation, because rack position is fixing, therefore have limitation when dismounting air-conditioning unit, to air-conditioning equipment installation and service work, makes troubles; In addition, although above-mentioned cabinet air conditioner is disembarked, cabinet is nearer, but the heat that still needs the cold wind of air-conditioning unit or the rack to give out adopts the materials such as glass plate to be closed and forms cold passage or the passage of heat, the mode of this cold passage or passage of heat sealing needs the extra material cost that increases, the bulk temperature of machine room is also easily affected, toward contact, need to adopt air-conditioning to lower the temperature to machine room, the bulk temperature of guarantee machine room is suitable.
To sum up, the cabinet air conditioner of prior art exists that air-conditioning unit utilance is low, air conditioner assembly and disassembly inconvenience, high in cost of production defect, needs badly and proposes a kind of applicable machine room server cabinet air conditioner, to solve above-mentioned technical problem.
Utility model content
An object of the present utility model is to propose a kind of air-conditioning, and it is high to machine room server refrigerating efficiency.
Another object of the present utility model is to propose a kind of air-conditioning, and it has advantages of easy accessibility.
Another object of the present utility model is to propose a kind of air-conditioning, and it has the advantage that cost is low.
For reaching this object, the utility model by the following technical solutions:
A kind of air-conditioning, comprise: rack and air-conditioning unit, described rack comprises that at least one battery limits and at least one battery limits one side that is positioned at are for the unit district of the unit that installs an air-conditioner, described air-conditioning unit is placed in described unit district at least partly, the rear side in described battery limits and described unit district and front side are respectively arranged with rack front side board and rack back side panel, between described battery limits and described unit district, be provided with dismountable rack dividing plate, described air-conditioning unit comprises blower fan, heat exchanger, described blower fan is located at a side of described heat exchanger, on described dividing plate, rack return air inlet is offered in the position of corresponding described heat exchanger, on described rack front side board or described rack dividing plate, offer rack air inlet.
As a kind of preferred version, described air-conditioning unit comprises a unit box body, before being divided into by a box partition in described unit box body, rear two chambers, described assembling is positioned at front chamber on described box partition, described heat exchanger is installed on described blower fan one side and is positioned at rear chamber, unit blasting air mouth is offered in the position of the corresponding described blower fan of the front panel of described unit box body and/or wainscot and/or left wallboard and/or right wallboard, unit return air inlet is offered in the position of the corresponding described heat exchanger of the squab panel of described unit box body and/or wainscot and/or left wallboard and/or right wallboard.
As a kind of preferred version, described unit blasting air mouth place is provided for detecting the first temperature sensor of wind pushing temperature, described rack air inlet place is provided for detecting the second temperature sensor of the inlet temperature enter described battery limits, described the first temperature sensor and described the second temperature sensor all be arranged on described rack in air-conditioning unit control box be connected.
As a kind of preferred version, described rack return air inlet place or described unit return air inlet place are provided for detecting the three-temperature sensor of return air temperature, and described three-temperature sensor is connected with the air-conditioning unit control box in being arranged on described rack.
Especially, described heat exchanger is three-dimensional diagonal and is arranged in described rear chamber.
Especially, described heat exchanger has two groups, described in two groups, a wherein end of heat exchanger is set in distance, the other end is contact setting, so that two groups of heat exchanger integral body are " V " type structural configuration in described rear chamber, and the one end of being somebody's turn to do " V " type structure is placed in the top of described rear chamber, and the other end is placed in the bottom of described rear chamber.
Especially, described blower fan has two or more, and in the vertical direction is cascading.
As a kind of preferred version, described air-conditioning unit control box is located in described unit district, between described air-conditioning unit control box and described air-conditioning unit, by the jockey with multiple-contact connectors, is connected.
Especially, described heat exchanger comprises heat exchanger tube and is located at the radiating fin outside described heat exchanger tube, described heat exchanger tube employing copper tube, and pass to chilled water or cold-producing medium.
As a kind of preferred version, one end that described air-conditioning unit arranges heat exchanger is located in described unit district, and one end that described air-conditioning unit arranges blower fan is located at outside described unit district.
Contrast prior art, the beneficial effects of the utility model are: the utility model adopts air-conditioning unit to be built in rack, and air-conditioning unit directly freezes to equipment, with respect to traditional cabinet air conditioner, aspect refrigerating efficiency, is improved; The utility model, by air-conditioning unit is directly arranged in rack, is arranged at air-conditioning unit between rack and is promoted aspect operability with respect to traditional cabinet air conditioner, and dismounting is convenient, reduces construction cost and material cost.
Accompanying drawing explanation
Fig. 1 is the schematic top plan view of a kind of extensive heating server cooling machine cabinet refrigerating system of prior art.
Fig. 2 is the structural representation of the air-conditioning described in embodiment.
Fig. 3 is the schematic top plan view of the air-conditioning described in embodiment.
Fig. 4 is the schematic top plan view of the another kind of structure of air-conditioning described in the utility model.
Fig. 5 is the structural representation of the air-conditioning unit described in embodiment.
Fig. 6 is the exploded view of the air-conditioning unit shown in Fig. 5.
Fig. 7 is the structural representation of single blower fan air-conditioning unit described in the utility model.
Fig. 8 is the structural representation of four fan device air-conditioning unit described in the utility model.
Fig. 9 is the heat exchanger structure schematic diagram of the air-conditioning unit described in embodiment.
Figure 10 is the another kind of structural representation of the heat exchanger of air-conditioning unit described in the utility model.
In figure:
100, server cabinet; 200, refrigerating units; 201, heat exchanger; 202, axial flow blower;
1, rack; 11, unit district; 12, battery limits; 111, rack front side board; 112, rack back side panel; 113, rack dividing plate; 114, rack return air inlet; 115, rack air inlet;
2, air-conditioning unit; 21, blower fan; 22, heat exchanger; 23, unit box body; 230, box partition; 231, front chamber; 232, rear chamber; 233, unit blasting air mouth; 234, unit return air inlet.
Embodiment
Below in conjunction with accompanying drawing and by embodiment, further illustrate the technical solution of the utility model.
Air-conditioning of the present utility model, comprise: rack and air-conditioning unit, air-conditioning unit is placed in described rack at least partly, air-conditioning unit is built in to rack, air-conditioning unit directly freezes to server apparatus, with respect to traditional air-conditioning, aspect refrigerating efficiency, be improved, offer convenience to installation and service work, can reduce construction cost and material cost.
Fig. 2 illustrates the structure of a kind of air-conditioning of the present utility model, and in the present embodiment, air-conditioning comprises: rack 1 and air-conditioning unit 2, and air-conditioning unit 2 parts are placed in rack 1, and another part is placed in outside rack 1.Those skilled in the art easily associate: air-conditioning unit all can also be placed in rack.
According to the air-conditioning shown in Fig. 2, more specifically scheme refers to Fig. 3, rack 1 comprises: Yi Ge unit district 11 is with the 12, unit district 11, four battery limits that lays respectively at both sides, unit district for the unit that installs an air-conditioner, and battery limits 12 are for build-in services device equipment.
The rear side in 12Yu unit district, battery limits 11 and front side are respectively arranged with rack front side board 111 and rack back side panel 112, are provided with dismountable rack dividing plate 113 between 12Yu unit district, battery limits 11.
Air-conditioning unit 2 comprises blower fan 21, heat exchanger 22, and blower fan 21 is located at a side of heat exchanger 22, is positioned at the front end of air-conditioning unit 2, and this end is placed in outside unit district 11, and the end that air-conditioning unit 2 is provided with heat exchanger is placed in unit district 11.On rack dividing plate 113, rack return air inlet 114 is offered in the position of corresponding heat exchanger, at rack front side board 111, offers rack air inlet 115.The mode of offering in air port can form lattice structure for offer a plurality of types hole on rack dividing plate or rack front side board, and also directly cutting sheet material forms larger-size opening etc.
The technical scheme that those skilled in the art are easily known refers to Fig. 4, is with the difference of the air-conditioning shown in Fig. 3, and the air-conditioning unit 2 of this programme is all placed in unit district 11.Rack return air inlet is still opened in the position corresponding with heat exchanger 22, rack dividing plate 113 rear ends, and rack air inlet 115 is opened in the rack dividing plate 113 front ends position corresponding with blower fan 21.
Two kinds of above-mentioned air-conditionings be all utilize the structure of rack itself and air-conditioning unit to form to give, return air channel, with respect to traditional air-conditioning, passage need to be additionally set, scheme implementation of the present utility model is more convenient, cost is minimized.
Fig. 5, 6 illustrate the structure of a kind of air-conditioning unit of the present utility model, in the present embodiment, air-conditioning unit comprises a unit box body 23, before being divided into by a box partition 230 in unit box body 23, rear chamber 231, 232, blower fan 21 is installed on and on box partition 230, is positioned at front chamber 231, heat exchanger 22 is installed on blower fan one side and is positioned at rear chamber 232, the front panel of unit box body 23, wainscot, unit blasting air mouth 233 is offered in the position of the corresponding blower fan of left wallboard and right wallboard, the squab panel of unit box body 23, unit return air inlet 234 is offered in the position of the corresponding heat exchanger of right wallboard.The quantity of unit blasting air mouth 233 and unit return air inlet 234, position and version all can be adjusted according to actual needs, and for example, the unit blasting air mouth in illustrated scheme adopts air-supply lattice structure, and unit return air inlet adopts in sheet material upper shed structure.
Air-conditioning unit of the present utility model can adopt single blower fan structure (referring to Fig. 7), two blower fan structure or four fan device structure (referring to Fig. 8) etc. according to actual needs.If adopt two or more blower fan structures, these blower fan in the vertical directions are cascading.The size of two single blower fan structure stacks is identical with two blower fan structures, and size and the four fan device of two two blower fan structure stacks are measure-alike, so, are convenient to carry out according to actual needs the expansion of unit.
Heat exchanger of the present utility model preferably includes heat exchanger tube and is located at the radiating fin outside heat exchanger tube, and described heat exchanger tube adopts copper tube.The heat exchanger of air-conditioning unit can adopt chilled water system or refrigerant system.If adopt chilled water system can adopt two-port valve or triple valve to control chilled-water flow; If adopt refrigerant system can adopt capillary or expansion valve to control refrigerant flow.
Heat exchanger can adopt more than one group or two groups.Fig. 9 illustrates a kind of heat exchanger arrangement form of the present utility model, in the present embodiment, the quantity of heat exchanger 22 is one group, and one end of heat exchanger 22 is placed in the top of the rear side left of rear chamber 232, the other end is placed in right-hand bottom, front side, and integral body is three-dimensional diagonal and is arranged in rear chamber.Corresponding with heat exchanger, at the squab panel of unit box body 23, right wallboard, offer unit return air inlet 234, by trailing flank and the right flank of unit, carry out return air.If one end of heat exchanger is placed in to right-hand top of rear side of rear chamber, the other end is placed in the bottom of front side left, integral body is three-dimensional diagonal and is arranged in rear chamber, accordingly at the squab panel of unit box body, left wallboard, offer unit return air inlet, by trailing flank and the left surface of unit, carry out return air.As can be seen here, more the direction of the inclination of heat exchanger is relevant for air return method.In addition, can also be as required in the top walls panels of unit box body, return air inlet be set, to increase return air area.
Figure 10 illustrates another kind of heat exchanger arrangement form of the present utility model, the quantity of this heat exchanger is two groups, a wherein end of two groups of heat exchangers 22 is set in distance, the other end is contact setting, so that two groups of heat exchanger integral body are " V " type structural configuration in rear chamber 232, and the one end of being somebody's turn to do " V " type structure is placed in the top of rear chamber 232, and the other end is placed in the bottom of rear chamber 232.Corresponding with heat exchanger, at the squab panel of unit box body 23, right wallboard, left wallboard, offer unit return air inlet 234, by trailing flank, right flank and the left surface of unit, carry out return air.In addition, can also be as required in the top walls panels of unit box body, return air inlet be set, to increase return air area.
The air-conditioning course of work of the present embodiment is described in conjunction with Fig. 3: the thermal current that in battery limits, server gives out passes through rack return air inlet successively, the blower fan in unit return air inlet Er Bei unit district sucks, air-flow carries out heat exchange through heat exchanger and forms cold airflow, the blower fan of flowing through is blown both sides to the left and right by unit blasting air mouth, air-flow forms wind screen before battery limits, be positioned at radiator fan in the battery limits rack air inlet inhalation device district on rack front side board, server apparatus in battery limits is dispelled the heat, the thermal current that then temperature raises is sucked by the blower fan in unit district again, circulation so successively.
In work , unit district for better regulation and control unit, air-conditioning unit control box is set, between air-conditioning unit control box and air-conditioning unit, can be connected by the jockey with multiple-contact connectors.
At unit blasting air mouth place, be provided for detecting the first temperature sensor of wind pushing temperature, rack air inlet place is provided for detecting the second transducer of the inlet temperature in access arrangement district, and the first temperature sensor is all connected with air-conditioning unit control box with the second temperature sensor.At rack return air inlet place or unit return air inlet place be provided for detecting the three-temperature sensor of return air temperature, three-temperature sensor is connected with air-conditioning unit control box.The consume of the known cold wind of temperature that the temperature detecting according to the first temperature sensor and the second temperature sensor detect in course of conveying, if consume is larger, air-conditioning unit control box regulates chilled-water flow and rotation speed of fan.According to three-temperature sensor, detect return air temperature, the temperature environment situation of known battery limits, regulates chilled-water flow and rotation speed of fan by air-conditioning unit control box according to need.
Know-why of the present utility model has below been described in conjunction with specific embodiments.These are described is in order to explain principle of the present utility model, and can not be interpreted as by any way the restriction to the utility model protection range.Explanation based on herein, those skilled in the art does not need to pay performing creative labour can associate other embodiment of the present utility model, within these modes all will fall into protection range of the present utility model.

Claims (10)

1. an air-conditioning, it is characterized in that, comprise: rack and air-conditioning unit, described rack comprises that at least one battery limits and at least one battery limits one side that is positioned at are for the unit district of the unit that installs an air-conditioner, described air-conditioning unit is placed in described unit district at least partly, the rear side in described battery limits and described unit district and front side are respectively arranged with rack front side board and rack back side panel, between described battery limits and described unit district, be provided with dismountable rack dividing plate, described air-conditioning unit comprises blower fan, heat exchanger, described blower fan is located at a side of described heat exchanger, on described dividing plate, rack return air inlet is offered in the position of corresponding described heat exchanger, on described rack front side board or described rack dividing plate, offer rack air inlet.
2. air-conditioning according to claim 1, it is characterized in that, described air-conditioning unit comprises a unit box body, before being divided into by a box partition in described unit box body, rear two chambers, described assembling is positioned at front chamber on described box partition, described heat exchanger is installed on described blower fan one side and is positioned at rear chamber, unit blasting air mouth is offered in the position of the corresponding described blower fan of the front panel of described unit box body and/or wainscot and/or left wallboard and/or right wallboard, unit return air inlet is offered in the position of the corresponding described heat exchanger of the squab panel of described unit box body and/or wainscot and/or left wallboard and/or right wallboard.
3. air-conditioning according to claim 2, it is characterized in that, described unit blasting air mouth place is provided for detecting the first temperature sensor of wind pushing temperature, described rack air inlet place is provided for detecting the second temperature sensor of the inlet temperature enter described battery limits, described the first temperature sensor and described the second temperature sensor all be arranged on described rack in air-conditioning unit control box be connected.
4. air-conditioning according to claim 2, it is characterized in that, described rack return air inlet place or described unit return air inlet place are provided for detecting the three-temperature sensor of return air temperature, and described three-temperature sensor is connected with the air-conditioning unit control box in being arranged on described rack.
5. according to the air-conditioning described in claim 2 to 4 any one, it is characterized in that, described heat exchanger is three-dimensional diagonal and is arranged in described rear chamber.
6. according to the air-conditioning described in claim 2 to 4 any one, it is characterized in that, described heat exchanger has two groups, described in two groups, a wherein end of heat exchanger is set in distance, the other end is contact setting, so that two groups of heat exchanger integral body are " V " type structural configuration in described rear chamber, and one end that should " V " type structure is placed in the top of described rear chamber, and the other end is placed in the bottom of described rear chamber.
7. according to the air-conditioning described in claim 1 to 4 any one, it is characterized in that, described blower fan has two or more, and in the vertical direction is cascading.
8. according to the air-conditioning described in claim 3 or 4, it is characterized in that, described air-conditioning unit control box is located in described unit district, between described air-conditioning unit control box and described air-conditioning unit, by the jockey with multiple-contact connectors, is connected.
9. according to the air-conditioning described in claim 1 to 4 any one, it is characterized in that, described heat exchanger comprises heat exchanger tube and is located at the radiating fin outside described heat exchanger tube, described heat exchanger tube employing copper tube, and pass to chilled water or cold-producing medium.
10. according to the air-conditioning described in claim 1 to 4 any one, it is characterized in that, one end that described air-conditioning unit arranges heat exchanger is located in described unit district, and one end that described air-conditioning unit arranges blower fan is located at outside described unit district.
CN201320612938.XU 2013-09-29 2013-09-29 Cabinet air-conditioning system Withdrawn - After Issue CN203467116U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320612938.XU CN203467116U (en) 2013-09-29 2013-09-29 Cabinet air-conditioning system

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Application Number Priority Date Filing Date Title
CN201320612938.XU CN203467116U (en) 2013-09-29 2013-09-29 Cabinet air-conditioning system

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CN201320612938.XU Withdrawn - After Issue CN203467116U (en) 2013-09-29 2013-09-29 Cabinet air-conditioning system

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103476231A (en) * 2013-09-29 2013-12-25 广东欧科空调制冷有限公司 Cabinet air conditioner system
CN105228415A (en) * 2015-10-16 2016-01-06 能节(北京)科技发展有限公司 A kind of air-conditioning cabinet and there is its server cabinet system
CN105465888A (en) * 2015-12-07 2016-04-06 深圳市艾特网能技术有限公司 Internally-arranged type air conditioner indoor unit suitable for 19-inch standard cabinet
CN105682421A (en) * 2016-01-29 2016-06-15 北京中普瑞讯信息技术有限公司 Refrigerating system for high-heat flux equipment cabinet
CN105823126A (en) * 2016-03-25 2016-08-03 广东欧科空调制冷有限公司 Air conditioner
CN107360709A (en) * 2017-06-19 2017-11-17 广州汇安科技有限公司 A kind of all-in-one micro computer room with low-and high-frequency electro-magnetic screen function

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103476231A (en) * 2013-09-29 2013-12-25 广东欧科空调制冷有限公司 Cabinet air conditioner system
CN103476231B (en) * 2013-09-29 2016-04-06 广东欧科空调制冷有限公司 Air-conditioning
CN105228415A (en) * 2015-10-16 2016-01-06 能节(北京)科技发展有限公司 A kind of air-conditioning cabinet and there is its server cabinet system
CN105228415B (en) * 2015-10-16 2018-10-26 能节(北京)科技发展有限公司 A kind of server cabinet system
CN105465888A (en) * 2015-12-07 2016-04-06 深圳市艾特网能技术有限公司 Internally-arranged type air conditioner indoor unit suitable for 19-inch standard cabinet
CN105682421A (en) * 2016-01-29 2016-06-15 北京中普瑞讯信息技术有限公司 Refrigerating system for high-heat flux equipment cabinet
CN105823126A (en) * 2016-03-25 2016-08-03 广东欧科空调制冷有限公司 Air conditioner
CN107360709A (en) * 2017-06-19 2017-11-17 广州汇安科技有限公司 A kind of all-in-one micro computer room with low-and high-frequency electro-magnetic screen function
CN107889440A (en) * 2017-06-19 2018-04-06 广州汇安科技有限公司 A kind of electronics bay with low-and high-frequency electro-magnetic screen function and energy-saving safety
CN107360709B (en) * 2017-06-19 2018-08-24 广州汇安科技有限公司 A kind of all-in-one micro computer room with low-and high-frequency electro-magnetic screen function

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