CN102026527A - Miniature refrigerator for cooling electronic equipment - Google Patents

Miniature refrigerator for cooling electronic equipment Download PDF

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Publication number
CN102026527A
CN102026527A CN 201010545934 CN201010545934A CN102026527A CN 102026527 A CN102026527 A CN 102026527A CN 201010545934 CN201010545934 CN 201010545934 CN 201010545934 A CN201010545934 A CN 201010545934A CN 102026527 A CN102026527 A CN 102026527A
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CN
China
Prior art keywords
compressor
electronic equipment
evaporator
expansion valve
miniature refrigerator
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.)
Pending
Application number
CN 201010545934
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Chinese (zh)
Inventor
孙正军
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SHENZHEN AD TECHNOLOGY Co Ltd
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SHENZHEN AD TECHNOLOGY Co Ltd
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Publication date
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Priority to CN 201010545934 priority Critical patent/CN102026527A/en
Publication of CN102026527A publication Critical patent/CN102026527A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a miniature refrigerator for cooling electronic equipment. The miniature refrigerator comprises a micro-compressor, a condenser, an electronic expansion valve, an evaporator and a microcomputer control system which are assembled on a bottom plate, wherein the micro-compressor, the condenser, the electronic expansion valve and the evaporator are hermetically connected through connecting pipes in turn to form a closed loop, in which a refrigerant circularly flows; and the surface of the evaporator is attached to a cooled component. The refrigerator can directly cool the cooled component and has high heat flux density; and because the microcomputer control system is used for controlling the miniature refrigerator, the miniature refrigerator has the characteristics of controllable temperature and compact structure, can easily reach a temperature less than the ambient temperature, and can be used for cooling a chip and devices such as a light emitting diode (LED), an optical component and the like.

Description

Electronic equipment cooling miniature refrigerator
Technical field
The present invention relates to a kind of miniature vapour compression refrigeration system, a kind ofly formed, can be carried out direct transpiration-cooled refrigerating plant electronic devices and components such as powerful integrated circuit, transistor, MOSFET, LED, lasers by parts such as minisize refrigeration compressor, miniature condenser and miniature evaporators.
Background technology
The conventional electronic equipment type of cooling has natural convection air cooling, the cooling of fan forced air convection, heat pipe heat radiation cooling, liquid cooling cooling (generally being water-cooled) etc.
The natural convection air type of cooling is to rely on mobile heat is dispersed in the medium on every side of air to go, thereby reaches the purpose of heat radiation.Heat dissipation capacity during natural convection air is very low, and maximum is about 0.08W/cm 2When density of heat flow rate was big, the natural convection air cooling obviously can not be satisfied the cooling requirement of electronic equipment, must rely on fan to cool off i.e. forced convection air cooling.
The air forced convection type of cooling is the most frequently used radiating mode of present electronic component owing to simplicity of design, easy to use and cheap advantages such as cost have obtained using very widely.Its ordinary construction is the form that radiator adds fan, though this structure is implemented conveniently, cost is lower, and its heat-sinking capability is also limited.Can only reach 0.3 ~ 1.6 W/cm 2
Along with improving constantly of integrated circuit integrated level, its dissipation power also continues to increase, reached more than the 200W as the dissipation power of monolithic integrated circuit now, more than the conventional type of cooling can not satisfy the needs of high-power chip heat radiation.And that in a single day integrated circuit dispels the heat is bad, will cause junction temperature of chip to raise, the circuit working instability, sometimes in addition can cause chip to burn, serious accident such as circuit catches fire.Therefore must seek other the type of cooling with high heat flux.
In the liquid cooling cooling, what use morely at present is the water-cooled cooling.Heat passes to cooled plate from chip through heat conduction.Rely on the water that flows in the cooled plate that heat is taken away then.The heat transfer power of water-cooling pattern is big, but owing to increased conveying devices such as extra tube connector and water pump, very high to the sealing requirements of system.Though because specific heat of water is big, but its conductance is also high, in case cooled plate or pipeline leak, will cause short circuit.Developed at present the fluid of some low conductivities, but its thermal conductivity of the fluid of low conductivity is very poor.
And above several type of cooling all can not make the temperature of electronic component that is cooled be lower than ambient temperature.
Adopt the steam compression type refrigeration mode to come chip cooled off and have the incomparable advantage of other type of cooling.Refrigeration cooling also is the type of cooling that unique temperature that makes the object that is cooled is lower than ambient temperature.Steam compression type refrigeration has advantages such as density of heat flow rate is big, efficient is high, Controllable Temperature, compact conformation in addition.The key of using the steam compression type refrigeration mode to cool off is a compressor, and the appearance of micro-compressor makes that electronic component is carried out direct evaporative cooling becomes possibility.
Therefore, the refrigerating plant that directly cools off at electronic component becomes research object.
Summary of the invention
The present invention is big inadequately in order to solve above-mentioned existing equipment or density of heat flow rate at the electronic devices and components cooling, structure is numerous and diverse, temperature is uncontrollable and be difficult to be lower than the problem of ambient temperature, can directly carry out transpiration-cooled electronic equipment cooling miniature refrigerator to electronic devices and components and provide a kind of.
The present invention is achieved by the following scheme:
Miniature refrigerator is used in above-mentioned electronic equipment cooling, comprises the micro-compressor, condenser, electric expansion valve, evaporator, filter and the microcomputer control system that are assemblied on the base plate; Described micro-compressor, condenser, electric expansion valve, evaporator and filter are tightly connected by tube connector successively, form the loop of sealing, and cold-producing medium circulates therein; The described evaporator surface parts that are cooled of fitting.Described evaporator surface is coated with heat-conducting silicone grease with the contact-making surface of the parts that are cooled.
Described condenser is connected described micro-compressor and electric expansion valve by first tube connector respectively with second tube connector; Described evaporator is connected described electric expansion valve and filter by the 3rd tube connector respectively with the 4th tube connector; Described filter connects micro-compressor by the 5th tube connector.The described first, second, third, fourth and the 5th tube connector is a copper pipe.
Described micro-compressor is the direct current rolling rotor compressor, by the controlling and driving of described control system.
Described condenser is a parallel flow heat exchanger.
Described electric expansion valve adopts electromagnetic-type electronic expansion valve or step motor type electric expansion valve.
Described evaporator is the heat exchanger of single fluid.
Described microcomputer control system comprises master control borad and the drive plate that is fixed in described base plate; Described drive plate drives the motor of described compressor by certain rotating speed operation; This rotating speed size is determined by 0 ~ 5V voltage signal that described master control borad sent; The operation of described master control borad control whole system comprises the start and stop of described compressor, condenser and the switch motion control of electric expansion valve, and according to the evaporator surface variation of temperature, adjusts the voltage control signal that sends to described drive plate in real time.
Miniature refrigerator of the present invention can be directly at the parts cooling that is cooled, and density of heat flow rate is big; Owing to adopt microcomputer control system control, thereby have the characteristics of Controllable Temperature, compact conformation, can reach easily below the ambient temperature, not only can be used for the cooling of chip, also can be used for the cooling of components and parts such as LED, optical module.
 
Description of drawings
Fig. 1 is an electronic equipment of the present invention miniature refrigerator structural representation;
Fig. 2 is the structural representation of electronic equipment of the present invention with miniature refrigerator assembling cooling box;
Fig. 3 is the explosive view of electronic equipment of the present invention with miniature refrigerator assembling cooling box.
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Embodiment
As Fig. 1, Fig. 2, shown in Figure 3, miniature refrigerator is used in electronic equipment cooling of the present invention, comprises the micro-compressor 1, condenser 2, electric expansion valve 3, evaporator 4, filter 5 and the microcomputer control system 6 that are assemblied on the base plate 8; Wherein micro-compressor 1, condenser 2, electric expansion valve 3, evaporator 4 and filter 5 are tightly connected by tube connector successively, form the loop of circulation sealing, and cold-producing medium circulates therein.
Micro-compressor 1 is a 24V direct current rolling rotor compressor.The motor of compressor 1 is a permanent-magnet brushless DC electric machine, drives by control system 6.Micro-compressor 1 is by first tube connector 11 condenser 2 that is tightly connected.
Condenser 2 is air-cooled high efficiency parallel flow heat exchanger, by second tube connector 21 electric expansion valve 3 that is tightly connected.
Electric expansion valve 3 adopts electromagnetic-type electronic expansion valve or step motor type electric expansion valve, can accurately regulate the flow of cold-producing medium; By the 3rd tube connector 31 evaporator 4 that is tightly connected.
Evaporator 4 is heat exchangers of a kind of single fluid, by cold-producing medium sweat cooling therein, absorbs and the tight heats of contacting electronic components and parts 7 in evaporator 4 surfaces.Evaporator 4 is by the 4th tube connector 41 filter 5 that is tightly connected;
Filter 5 so far forms complete loop by the 5th tube connector (figure does not show) micro-compressor 1 that is tightly connected.
Microcomputer control system 6 comprises master control borad 61 and drive plate 62.Drive plate 62 is used for the motor of Driven Compressor 1, makes it by certain rotating speed operation; The size of rotating speed is to be determined by 0 ~ 5V voltage signal that master control borad 61 is sent.Master control borad 61 is used to control the operation of whole system, comprise the start and stop control of compressor 1, condenser 2 fans, and the switch motion of electromagnetically operated valve 3 control, and according to the variation of evaporator 4 surface temperatures, adjust the size of the voltage control signal that sends to drive plate 62 in real time, make compressor 1 do the variable speed operation.On master control borad 61 and the drive plate 62 equal fixed base plates 8,, guarantee that the temperature of master control borad 61 and drive plate 62 is unlikely too high with thermolysis by base plate 8.
The flow direction of cold-producing medium is in the mini-refrigerator system: compressor 1 → condenser 2 → electric expansion valve 3 → evaporator 4 → filter 5 → compressor 1.Cold-producing medium each parts of flowing through successively constitute a closed-loop path; The first, second, third, fourth and the 5th tube connector that connects above-mentioned each parts is the copper pipe structure, adopts soldering to connect.
During application, evaporator 4 surfaces are close to the electronic devices and components 7 that are cooled, and smear heat-conducting silicone grease at contact-making surface, in order to heat conduction.The import of evaporator 4 is connected with electric expansion valve 3 by the 3rd tube connector 31, to accept from condenser 2 and the cold-producing medium after expanding; Cold-producing medium is sweat cooling in evaporator 4, takes away the heat of the electronic devices and components 7 that are cooled; Become gas after the cold-producing medium evaporation, enter the air intake duct of compressor 1 through the outlet of evaporator 4 by the 4th tube connector 54.
In order to improve assembly performance, set up a cooling box 9 at evaporator 4 places, as Fig. 2, shown in Figure 3, evaporator 4 is fixed on the rear end of cooling box 9, and the electronic devices and components 7 that are cooled are contained in the cooling box 9 and with evaporator 4 to be close to heat radiation.
The operation principle of this mini-refrigerator system is:
Refrigerant gas is compressed by compressor 1, becomes the gas of HTHP, enters condenser 2.In condenser 2, because the temperature of high temperature and high pressure gas is higher than the temperature of the surrounding air of sending here from condenser 2 fans, therefore to the surrounding air heat radiation and condensation becomes refrigerant liquid.In the outlet of condenser 2, refrigerant gas becomes liquid fully.Refrigerant liquid enters electric expansion valve 3 then, and pressure reduces rapidly, and a part of emission of liquid is come out, and becomes the gas-liquid mixture of low-pressure low-temperature.This gas-liquid mixture inflow evaporator 4, liquid wherein continues evaporation, and temperature further reduces.In evaporation process, constantly absorb evaporator 4 surfaces by the heat that electronic devices and components 7 pass over, the temperature of electronic devices and components 7 is reduced, promptly produce refrigeration effect.To the outlet of evaporator 4, refrigerant liquid all evaporates, and becomes superheated steam.This superheated steam is sucked by compressor 1 again through filter 5 and compresses, and so moves in circles, and produces cold continuously.
The start and stop of compressor 1 according to the variation of evaporator 4 surface temperatures, are regulated the rotating speed and the start and stop of compressor 1 automatically, and are had indispensable defencive function by master control borad 61 controls of microcomputer control system 6, keep the whole system safe and stable operation.But the rotating speed step-less adjustment of compressor 1, by the voltage signal of a 0 ~ 5V being provided for drive plate 62, the rotating speed of decision compressor 1: when the voltage of giving drive plate 62 be+during 5V, compressor 1 moves with full rotating speed; When the voltage of giving drive plate 62 was 0V, compressor 1 was out of service.Micro-compressor 1 is a speed changeable compressor, and its rotating speed can be regulated between 1000rpm ~ 6500rpm continuously, therefore the evaporating temperature that can accurately regulate evaporator 4.
Miniature refrigerator of the present invention can be effectively directly at the parts cooling that is cooled, and density of heat flow rate is big; Owing to adopt microcomputer control system, thereby have the characteristics of Controllable Temperature, compact conformation, can reach easily below the ambient temperature, not only can be used for the cooling of chip, also can be used for the cooling of components and parts such as LED, optical module.
The above only is a preferable possible embodiments of the present invention, and non-so limitation protection scope of the present invention so the equivalence techniques that uses specification of the present invention and diagramatic content to do such as changes, all is contained in protection scope of the present invention.

Claims (9)

1. miniature refrigerator is used in an electronic equipment cooling, and it is characterized in that: described refrigerator comprises micro-compressor, condenser, electric expansion valve, evaporator, filter and the microcomputer control system that is assemblied on the base plate; Described micro-compressor, condenser, electric expansion valve, evaporator and filter are tightly connected by tube connector successively, form the loop of sealing, and cold-producing medium circulates therein; The described evaporator surface parts that are cooled of fitting.
2. miniature refrigerator is used in electronic equipment cooling as claimed in claim 1, it is characterized in that: described evaporator surface is coated with heat-conducting silicone grease with the contact-making surface of the parts that are cooled.
3. miniature refrigerator is used in electronic equipment cooling as claimed in claim 1, and it is characterized in that: described condenser is connected described micro-compressor and electric expansion valve by first tube connector respectively with second tube connector; Described evaporator is connected described electric expansion valve and filter by the 3rd tube connector respectively with the 4th tube connector, and described filter connects micro-compressor by the 5th tube connector.
4. miniature refrigerator is used in electronic equipment cooling as claimed in claim 3, and it is characterized in that: the described first, second, third, fourth and the 5th tube connector is a copper pipe.
5. miniature refrigerator is used in electronic equipment cooling as claimed in claim 1, and it is characterized in that: described micro-compressor is the direct current rolling rotor compressor, by the controlling and driving of described control system.
6. miniature refrigerator is used in electronic equipment cooling as claimed in claim 1, and it is characterized in that: described condenser is a parallel flow heat exchanger.
7. miniature refrigerator is used in electronic equipment cooling as claimed in claim 1, and it is characterized in that: described electric expansion valve adopts electromagnetic-type electronic expansion valve or step motor type electric expansion valve.
8. miniature refrigerator is used in electronic equipment cooling as claimed in claim 1, and it is characterized in that: described evaporator is the heat exchanger of single fluid.
9. miniature refrigerator is used in electronic equipment cooling as claimed in claim 1, and it is characterized in that: described microcomputer control system comprises master control borad and the drive plate that is fixed in described base plate;
Described drive plate drives the motor of described compressor by certain rotating speed operation; This rotating speed size is determined by 0 ~ 5V voltage signal that described master control borad sent;
The operation of described master control borad control whole system comprises the start and stop of described compressor, condenser and the switch motion control of electric expansion valve, and according to the evaporator surface variation of temperature, adjusts the voltage control signal that sends to described drive plate in real time.
CN 201010545934 2010-11-16 2010-11-16 Miniature refrigerator for cooling electronic equipment Pending CN102026527A (en)

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Application Number Priority Date Filing Date Title
CN 201010545934 CN102026527A (en) 2010-11-16 2010-11-16 Miniature refrigerator for cooling electronic equipment

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Application Number Priority Date Filing Date Title
CN 201010545934 CN102026527A (en) 2010-11-16 2010-11-16 Miniature refrigerator for cooling electronic equipment

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CN102026527A true CN102026527A (en) 2011-04-20

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102815181A (en) * 2011-06-09 2012-12-12 杭州三花研究院有限公司 Automobile air conditioning system
CN103052305A (en) * 2013-01-08 2013-04-17 南车株洲电力机车研究所有限公司 Method, device and system for cooling power electronic heating element
WO2013104140A1 (en) * 2012-01-09 2013-07-18 齐力制冷系统(深圳)有限公司 Refrigerating device
CN104080311A (en) * 2013-03-28 2014-10-01 北京航空航天大学 Metal/alloy solid-liquid phase change and vapor compression refrigeration cycle combined electronic component radiator and method
CN104427825A (en) * 2013-08-28 2015-03-18 北京航空航天大学 Multigang frequency conversion type refrigeration system for fixed-point refrigeration of multiple heat dissipation sources of electronic device, and operation method thereof
CN105299938A (en) * 2015-11-06 2016-02-03 中国电子科技集团公司第二十九研究所 Small-sized compression refrigerating system based on micro-channel heat exchanger
CN105431017A (en) * 2015-12-23 2016-03-23 广西大学 Knudsen effect-based electronic component cooling device and method
CN106352573A (en) * 2016-08-26 2017-01-25 青岛海信电子设备股份有限公司 Refrigerant direct cooling system and control method thereof
CN107104360A (en) * 2017-07-13 2017-08-29 重庆师范大学 The micro- sweat cooling of large power laser diode array throttling is heat sink
WO2017148103A1 (en) * 2016-02-29 2017-09-08 深圳宝控科技有限公司 Computer mainframe box
TWI651506B (en) * 2017-09-11 2019-02-21 旭品科技股份有限公司 Heat exchanger
CN111322779A (en) * 2020-04-15 2020-06-23 武汉微冷科技有限公司 Miniature refrigerating device

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CN1972586A (en) * 2006-11-29 2007-05-30 上海国冶工程技术有限公司 Heat radiator of industrial electric control box
CN201322465Y (en) * 2008-11-05 2009-10-07 齐力制冷系统(深圳)有限公司 Small controller cabinet air-conditioner

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CN1972586A (en) * 2006-11-29 2007-05-30 上海国冶工程技术有限公司 Heat radiator of industrial electric control box
CN201322465Y (en) * 2008-11-05 2009-10-07 齐力制冷系统(深圳)有限公司 Small controller cabinet air-conditioner

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9581368B2 (en) 2011-06-09 2017-02-28 Hangzhou Sanhua Research Institute Co., Ltd. Automobile air-conditioning system
CN102815181A (en) * 2011-06-09 2012-12-12 杭州三花研究院有限公司 Automobile air conditioning system
WO2013104140A1 (en) * 2012-01-09 2013-07-18 齐力制冷系统(深圳)有限公司 Refrigerating device
CN103052305A (en) * 2013-01-08 2013-04-17 南车株洲电力机车研究所有限公司 Method, device and system for cooling power electronic heating element
CN104080311A (en) * 2013-03-28 2014-10-01 北京航空航天大学 Metal/alloy solid-liquid phase change and vapor compression refrigeration cycle combined electronic component radiator and method
CN104080311B (en) * 2013-03-28 2019-10-18 北京航空航天大学 A kind of cooling electronic component device and method
CN104427825A (en) * 2013-08-28 2015-03-18 北京航空航天大学 Multigang frequency conversion type refrigeration system for fixed-point refrigeration of multiple heat dissipation sources of electronic device, and operation method thereof
CN104427825B (en) * 2013-08-28 2020-01-17 北京航空航天大学 Multi-connected variable-frequency refrigeration system for fixed-point cooling of multiple heat dissipation sources of electronic equipment and operation method of multi-connected variable-frequency refrigeration system
CN105299938B (en) * 2015-11-06 2017-11-14 中国电子科技集团公司第二十九研究所 A kind of compact refrigeration system based on micro-channel heat exchanger
CN105299938A (en) * 2015-11-06 2016-02-03 中国电子科技集团公司第二十九研究所 Small-sized compression refrigerating system based on micro-channel heat exchanger
CN105431017A (en) * 2015-12-23 2016-03-23 广西大学 Knudsen effect-based electronic component cooling device and method
CN105431017B (en) * 2015-12-23 2018-04-20 广西大学 It is a kind of based on the electronic component cooling device and method of exerting gloomy effect
WO2017148103A1 (en) * 2016-02-29 2017-09-08 深圳宝控科技有限公司 Computer mainframe box
CN106352573A (en) * 2016-08-26 2017-01-25 青岛海信电子设备股份有限公司 Refrigerant direct cooling system and control method thereof
CN107104360A (en) * 2017-07-13 2017-08-29 重庆师范大学 The micro- sweat cooling of large power laser diode array throttling is heat sink
CN107104360B (en) * 2017-07-13 2019-06-07 重庆师范大学 The micro- sweat cooling of large power laser diode array throttling is heat sink
TWI651506B (en) * 2017-09-11 2019-02-21 旭品科技股份有限公司 Heat exchanger
CN111322779A (en) * 2020-04-15 2020-06-23 武汉微冷科技有限公司 Miniature refrigerating device

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Application publication date: 20110420