CN104633873A - Air conditioning unit - Google Patents
Air conditioning unit Download PDFInfo
- Publication number
- CN104633873A CN104633873A CN201310604180.XA CN201310604180A CN104633873A CN 104633873 A CN104633873 A CN 104633873A CN 201310604180 A CN201310604180 A CN 201310604180A CN 104633873 A CN104633873 A CN 104633873A
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- China
- Prior art keywords
- air
- cooling
- cooler
- conditioner set
- set according
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- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/40—Fluid line arrangements
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2029—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant with phase change in electronic enclosures
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention discloses an air conditioning unit. The air conditioning unit comprises a refrigeration system and an electric control system, wherein the refrigeration system comprises a compressor, a condenser, an evaporator, a flasher and a throttling element, wherein the electric control system comprises a plurality of electronic components. The air conditioning unit further comprises a cooling loop, wherein the cooling loop comprises a siphon and a cooler, the siphon and the cooler are sequentially communicated, an inlet of the siphon is communicated with a liquid space of the flasher, an outlet of the cooler is communicated with a gas space of the flasher, the cooler in the cooling loop is in hot transmission relation with the electronic components, and thus the electronic components are cooled. According to the air conditioning unit, the problems that in the prior art, an air cooling heat dissipation system for electronic components is poor in heat dissipation effect and the noise is high are solved, and compared with air cooling and water cooling, refrigerant cooling is high in cooling effect and high in cooling efficiency; an air cooling system is omitted, in this way, the size of equipment is reduced, and noise is lowered; the refrigerant of the air conditioning unit is used for refrigeration circulating, in this way, the electronic components can be in an airtight environment and are prevented from being affected by dust, the interior is clean, and service life is long.
Description
Technical field
The present invention relates to refrigeration technology field, particularly the cooling of air-conditioner set electronic devices and components.
Background technology
Current, for refrigeration air-conditioning unit, rectifier, the inverter constant power device of unit in use increase generation amount of heat with power, need effective type of cooling guaranteed output devices function in reliable temperature interval, the modes such as having of commonly using at present is air-cooled, water-cooled, refrigerant cooling.
There is following problems in air-cooled technology:
1. wind-cooling heat dissipating ability, if cooling load demand is large, requires that air quantity is large, causes blower fan volume large;
2. Wind Volume causes fan noise bigger than normal;
3. air-cooled laying dust problem has an impact to the reliability of electronic devices and components or safe operation;
4. cooling blower modulability is poor, and energy consumption is high, not energy-conservation;
5. blower fan air draft causes units' installation environment temperature to raise, and needs to increase corresponding air-conditioning system to machine room.
There is following problems in Water Cooling Technology:
1, external supply and drain water system is needed;
2, the easy fouling of water, after causing Long-Time Service, cooling effect is deteriorated;
3, the conductance of non-pure water is high, once pipeline leaks, will cause short circuit, cause unit to damage.
For the technology of existing employing refrigerating system coolant cooling, cool for drawing high pressure refrigerant from condenser.In unit running process, the high-pressure liquid refrigerant carrying out condenser is for cool electronic components and parts after throttling, and the refrigerant return-air after heat absorption evaporation flows into evaporimeter.For this type of cooling, there are the following problems, and the refrigerant of drawing from condenser needs to use restricting element throttling, and cost is high, and it is large to cool the refrigerant amount consumed, and reduces the efficiency of unit.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of air-conditioner set, to solve the problem that electronic devices and components cooling effect is poor, cost is high in prior art in air-conditioner set.
A kind of air-conditioner set, comprise refrigeration system and electric-control system, refrigeration system comprises compressor, condenser, evaporimeter, flash evaporation and restricting element, electric-control system comprises some electronic devices and components, air-conditioner set also comprises cooling circuit, cooling circuit comprises the siphon pipe and cooler that are communicated with successively, siphonal import is communicated with the liquid space of described flash evaporation, the outlet of cooler is communicated with the gaseous space of described flash evaporation, at least one in cooler and described electronic devices and components is configured to heat transfer relation, and these electronic devices and components are lowered the temperature.
Further, comprise many cooling branch roads, every bar cooling branch road is at least provided with a cooler.
Further, cooler is multiple, series, parallel or series-parallel connection between multiple cooler.
Further, cooling branch road also comprises the control valve for regulating cold medium flux.
Further, control valve is magnetic valve and/or choke valve.
Further, choke valve is electric expansion valve, heating power expansion valve, capillary or restricting orifice.
Further, the temperature sensor of the temperature for detecting cooler and/or electronic devices and components is also comprised.
Further, the controller of the temperature value control and regulation valve opening for detecting according to temperature sensor is also comprised.
Further, cool branch road and also comprise stop valve.
Further, the filter that branch road also comprises the refrigerant for filtering flash evaporation output is cooled.
Further, electronic devices and components comprise at least one in rectifier, inverter, frequency converter, reactor, SPM, processor.
Further, air-conditioner set is centrifugal refrigerating machines.
The invention has the beneficial effects as follows: relative to air-cooled and water-cooled, the good cooling results of refrigerant cooling, cooling effectiveness is high; Save air cooling system, make equipment volume little, noise reduction; Utilize the refrigerant of air-conditioner set to complete kind of refrigeration cycle, make electronic devices and components be in closed environment, avoid dust to affect, inner clean, service life is long; Relative to the type of cooling of drawing refrigerant from condenser, can choke valve be saved, reduce costs.
Accompanying drawing explanation
Fig. 1 is the air-conditioning unit structure block schematic illustration of the embodiment of the present invention one;
Fig. 2 is the electronic devices and components cooling system structure block schematic illustration with multichannel cooling circuit of the embodiment of the present invention one;
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Embodiment one
As shown in Figure 1, the air-conditioner set of the present embodiment comprises the evaporimeter 10, compressor 20, condenser 30, flash evaporation 40 and the restricting element that form refrigeration system, and restricting element comprises the first throttle element 51 be connected between evaporimeter 10 and flash evaporation 40 and the second section fluid element 52 be connected between condenser 30 and flash evaporation 40.Compressor 20 is twin-stage or compound compressor, preferably centrifugal compressor, and the secondary compression air entry of compressor 20 is communicated with flash evaporation 40.Preferably, air-conditioner set is handpiece Water Chilling Units, further, is centrifugal refrigerating machines.
The electric-control system of air-conditioner set comprises some electronic devices and components, wherein portions of electronics components and parts, particularly operationally caloric value larger needs cools, as rectifier, inverter, IPM module (SPM), chopper circuit, reactor and some CPU for semiconductor power device and information processing chip.
In order to cool the electronic devices and components needing cooling, air-conditioner set comprises cooling circuit, this cooling circuit comprises the cooler 60 and siphon pipe 70 that connect successively, cooler 60 is the inner heat exchanger with refrigerant circulation passage, the arrival end of siphon pipe 70 is communicated with the liquid space of flash evaporation 40, and the port of export of cooler 60 is communicated with the gaseous space of flash evaporation 40.Cooler 60 contacts or forms heat transfer relation near electronic devices and components, the heat distributed when taking away electronic devices and components work by the low temperature refrigerant of circulation in cooler 60, for electronic devices and components cooling, in order to can siphonage be realized, need the junction of the setting height(from bottom) of cooler 60 lower than siphon pipe 70 and flash evaporation 40.
Air-conditioner set makes flash evaporation 40 export the liquid refrigerant of supercooled state, enters into cooler 60 through siphon pipe after starting.Refrigerant absorbs the heat of vaporization of electronic devices and components herein, forms gaseous coolant enters into flash evaporation 40 top gaseous space by connecting line, again gets back in the cooling cycle system of air-conditioner set.By siphonage, without the need to external impetus, refrigerant at flash evaporation 40, circulate between siphon pipe 70 and cooler 60, can constantly absorb the heat that electronic devices and components distribute, and is its cooling.When after compressor emergency shutdown, do not having liquid refrigerants in flash evaporation, siphon stops, and passes through, then stop the cooling fluid of electronic devices and components in cooler 60 without refrigerant.
Because the liquid refrigerants in flash evaporation 40 is in supercooled state, the direct cool electronic components and parts of this refrigerant can be utilized, in cooling circuit, can not choke valve be set, reduce the cost of air-conditioner set.
In order to strengthen the control exported the cold of cooler 60, making electronic devices and components be in suitable temperature range, in this cooling circuit, being also provided with the control valve 70 for regulating cold medium flux.Control valve 70 can be magnetic valve, or has the choke valve of throttling action, as the combination of electric expansion valve, heating power expansion valve, capillary or restricting orifice and wherein two or more throttling device.When control valve 70 is magnetic valve, magnetic valve can be arranged on the optional position of cooling circuit; When control valve 70 is choke valve, choke valve is located between flash evaporation 40 and cooler 60, with the liquid refrigerants throttling exported flash evaporation.In order to strengthen the control to refrigerant in cooling circuit further, also not only magnetic valve can be set but also arrange choke valve.
Preferably, the liquid flowing tube road before choke valve is also provided with filter, keeps the security that choke valve runs.
Preferably, be provided with stop valve at the arrival end of cooling circuit and/or the port of export, be convenient to opening or turning off of in emergency circumstances controlled cooling model loop, and be convenient to replacing and the maintenance of accessory in cooling circuit.
Air-conditioner set also comprises the temperature sensor for detected electrons components and parts temperature or chiller temperature, and this temperature sensor is affixed on frequency conversion drive dress electronic devices and components face, or embeds frequency conversion drive dress electronic devices and components.The controller of air-conditioner set, according to detecting that temperature carrys out the aperture of electromagnetic valve for adjusting and/or choke valve, fills in electronic devices and components temperature range to make frequency conversion drive.Except avoid temperature too high except, temperature also will be prevented too low, and the too low meeting of temperature makes the stress ability to bear of electronic devices and components decline, be then hit, vibrate easy fault or damage, and low temperature also can make device surface form condensation, the appearance of condensation can bring potential safety hazard to electronics, electrical system.
Cooler 60 is the inner metallic cold plate being embedded with refrigerant flow path, metallic cold plate contacts with electronic devices and components, also can according to factors such as the shape of site environment situation, electronic devices and components, cooling requirements, select suitable cooler type, such as can not contact heat-exchanging or to cooling less demanding device, fin-tube heat exchanger, plate-fin heat exchanger etc. can be selected as cooler.
Preferably, electronic devices and components are located in a closed housing, inner surface and/or the outer surface of housing are provided with insulation material, to reduce the heat transmission of cooler 60 and outside air, reduce loss of refrigeration capacity, improve utilization rate and the cooling effectiveness of refrigerant, owing to being in enclosed environment, dust accumulation can also be prevented the impact of heat radiation, can also not prevent with contacting external air that temperature is too low to be made frequency conversion drive fill electronic devices and components surface to occur condensation.
These electronic devices and components comprise at least one in rectifier, inverter, frequency converter, reactor, SPM, processor.
According to the technical scheme of embodiment one, solve frequency conversion drive dress electronic devices and components problem in prior art, safe and reliable, and it is high to improve cooling effectiveness, reduces the cost of air-conditioner set.
Embodiment two
The quantity of the electronic devices and components if desired cooled is more, or be subject to the restriction of installing space, set structure, cooling cannot be completed by cooler, this cooling circuit comprises many, every bar branch road is provided with at least one cooler, and control valve is set on demand, control valve is magnetic valve and/or choke valve.The difference of the present embodiment and embodiment one is, comprises many cooling circuits.
As shown in Figure 2, for the present embodiment is with the air-conditioner set schematic diagram of many cooling branch roads.This cooling circuit comprises three branch roads, from flash evaporation 40 export liquid refrigerants through part flow arrangement shunting after, enter three tunnels cooling branch road (three cooling branch road also directly can be connected with flash evaporation 40 respectively by siphon pipe), every bar branch road is equipped with control valve 70 and cooler 60.The present embodiment is to cool air conditioning frequency converter, and this frequency converter comprises rectifier, inverter and reactor, is configured to heat transfer relation respectively with the cooler 60 on every bar branch road, is the cooling of these components and parts by cooler 06.Further, pipeline before liquid refrigerants shunting or after heat absorption is confluxed also can arrange a total control valve, if before being arranged on liquid refrigerants shunting, then this total control valve is magnetic valve and/or choke valve, after if arrange, refrigerant confluxes, then this total control valve is magnetic valve.
Because the cooling requirements of rectifier wherein and inverter is higher, branch road control valve then on these two branch roads is adjustable control valve, as electric expansion valve, adjustable orifice plate or magnetic valve, the aperture of this control valve is regulated, to obtain suitable cold medium flux according to the actual temperature of rectifier and inverter.The branch road control valve be positioned on another branch road then can adopt fixed control valve, as fixing orifice plate or capillary, according to the restricting element that systematic function coupling is best.Be wherein metallic cold plate structure with refrigerant flow pipe for cooling the cooler of rectifier and inverter, rectifier and inverter contact with metallic cold plate, and the cooler of cooling reactor is metal pipe structure, is wrapped on reactor.The cooling effect of the relative wind-cooling heat dissipating of this radiating mode is better, and cooling velocity is fast, cooling effectiveness is high, greatly can reduce the volume of current transformer and the requirements of type selecting of element.
Wherein rectifier and inverter also can be cooled by a cooling circuit, and namely rectifier and inverter arrangements arrange two coolers of connecting on same cooler or on a branch road, and two coolers are respectively rectifier and inverter cooling.The control to a road control valve can be reduced like this, simplify and control and save components and parts, reduce costs.
Can well solve the cooling problem of electronic devices and components according to cooling system provided by the invention, and the cooling capacity of refrigerant is better than air-cooled and water-cooled; According to cooling requirement, the flow of each branch road refrigerant can also be regulated; Refrigerant is insulator, and do not have short circuit or electric leakage hidden danger, security is high, utilizes the refrigerant of air-conditioner set to complete kind of refrigeration cycle, makes electronic devices and components be in closed environment, avoids dust to affect, and inner clean, service life is long.
Because the refrigerant for cooling takes from flash evaporation, being in supercooled state, can cancelling choke valve, reduce costs, owing to cancelling choke valve, then in cooling circuit, refrigerant flow rate is sooner, and cooling capacity is stronger.In order to the control accuracy improving cooling also can arrange control valve, but relative to prior art, because refrigerant temperature is lower, the coolant quantity required for cooling can reduce, and reduces the cooling medium charging amount of unit, reduces the size of choke valve, also can reduce costs.
To sum up, according to technical scheme of the present invention, can the electronic devices and components of effective cooling heating, reduce the cost of air-conditioner set, improve cooling capacity and cooling effectiveness, improve the efficiency of unit.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (12)
1. an air-conditioner set, comprises refrigeration system and electric-control system, and described refrigeration system comprises compressor, condenser, evaporimeter, flash evaporation and restricting element, and described electric-control system comprises some electronic devices and components, it is characterized in that:
Also comprise cooling circuit, described cooling circuit comprises the siphon pipe and cooler that are communicated with successively, described siphonal import is communicated with the liquid space of described flash evaporation, the outlet of described cooler is communicated with the gaseous space of described flash evaporation, at least one in described cooler and described electronic devices and components is configured to heat transfer relation, and these electronic devices and components are lowered the temperature.
2. air-conditioner set according to claim 1, is characterized in that, described cooling circuit comprises many branch roads, branch road described in every bar is at least provided with a cooler.
3. air-conditioner set according to claim 1, is characterized in that, described cooler is multiple, series, parallel or series-parallel connection between described multiple cooler.
4. the air-conditioner set according to any one of claims 1 to 3, is characterized in that, described cooling circuit also comprises the control valve for regulating cold medium flux.
5. air-conditioner set according to claim 4, is characterized in that, described control valve is be arranged on magnetic valve on described siphon pipe and/or choke valve.
6. air-conditioner set according to claim 5, is characterized in that, described choke valve is electric expansion valve, heating power expansion valve, capillary or restricting orifice.
7. air-conditioner set according to claim 4, is characterized in that, also comprises the temperature sensor of the temperature for detecting described cooler and/or described electronic devices and components.
8. air-conditioner set according to claim 7, is characterized in that, the temperature value also comprised for detecting according to described temperature sensor controls the controller of described control valve opening.
9. the air-conditioner set according to any one of claims 1 to 3, is characterized in that, described cooling circuit also comprises stop valve.
10. the air-conditioner set according to any one of claims 1 to 3, is characterized in that, described cooling circuit also comprises the filter for filtering the refrigerant that described flash evaporation exports.
11. air-conditioner set according to any one of claims 1 to 3, it is characterized in that, described electronic devices and components comprise at least one in rectifier, inverter, frequency converter, reactor, SPM, processor.
12. air-conditioner set according to any one of claims 1 to 3, it is characterized in that, described air-conditioner set is centrifugal refrigerating machines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310604180.XA CN104633873A (en) | 2013-11-25 | 2013-11-25 | Air conditioning unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310604180.XA CN104633873A (en) | 2013-11-25 | 2013-11-25 | Air conditioning unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104633873A true CN104633873A (en) | 2015-05-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310604180.XA Pending CN104633873A (en) | 2013-11-25 | 2013-11-25 | Air conditioning unit |
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| CN (1) | CN104633873A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106546020A (en) * | 2016-10-27 | 2017-03-29 | 重庆美的通用制冷设备有限公司 | Air conditioning system |
| CN108088103A (en) * | 2017-12-08 | 2018-05-29 | 珠海格力电器股份有限公司 | Air-conditioning system and control method |
| CN108775721A (en) * | 2018-07-27 | 2018-11-09 | 珠海格力电器股份有限公司 | Cooling system and its control method |
| CN109028486A (en) * | 2018-06-20 | 2018-12-18 | 广东美的暖通设备有限公司 | Refrigerant cooling device and its control method and air-conditioning system |
| CN109891165A (en) * | 2017-10-06 | 2019-06-14 | 日立江森自控空调有限公司 | Air conditioner |
| CN112460823A (en) * | 2019-09-06 | 2021-03-09 | 中车株洲电力机车研究所有限公司 | Frequency converter thermal management system of air conditioner and air conditioner |
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| CN203633039U (en) * | 2013-11-25 | 2014-06-04 | 珠海格力电器股份有限公司 | Air-conditioning unit |
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| JP2001119184A (en) * | 1999-10-19 | 2001-04-27 | Ebara Corp | Cooling method for frequency converter |
| CN101403541A (en) * | 2008-10-23 | 2009-04-08 | 浙江大学 | Heat pump air conditioning system |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106546020A (en) * | 2016-10-27 | 2017-03-29 | 重庆美的通用制冷设备有限公司 | Air conditioning system |
| CN106546020B (en) * | 2016-10-27 | 2018-04-06 | 重庆美的通用制冷设备有限公司 | Air-conditioning system |
| CN109891165A (en) * | 2017-10-06 | 2019-06-14 | 日立江森自控空调有限公司 | Air conditioner |
| CN109891165B (en) * | 2017-10-06 | 2021-05-04 | 日立江森自控空调有限公司 | Air conditioner |
| US11231185B2 (en) | 2017-10-06 | 2022-01-25 | Hitachi-Johnson Controls Air Conditioning, Inc. | Air conditioner |
| CN108088103A (en) * | 2017-12-08 | 2018-05-29 | 珠海格力电器股份有限公司 | Air-conditioning system and control method |
| CN109028486A (en) * | 2018-06-20 | 2018-12-18 | 广东美的暖通设备有限公司 | Refrigerant cooling device and its control method and air-conditioning system |
| CN108775721A (en) * | 2018-07-27 | 2018-11-09 | 珠海格力电器股份有限公司 | Cooling system and its control method |
| CN108775721B (en) * | 2018-07-27 | 2019-10-29 | 珠海格力电器股份有限公司 | Cooling system and its control method |
| WO2020019641A1 (en) * | 2018-07-27 | 2020-01-30 | 珠海格力电器股份有限公司 | Cooling system and control method therefor |
| US11668500B2 (en) | 2018-07-27 | 2023-06-06 | Gree Electric Appliances, Inc. Of Zhuhai | Cooling system and control method therefor |
| CN112460823A (en) * | 2019-09-06 | 2021-03-09 | 中车株洲电力机车研究所有限公司 | Frequency converter thermal management system of air conditioner and air conditioner |
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