CN203633039U - air conditioning unit - Google Patents
air conditioning unit Download PDFInfo
- Publication number
- CN203633039U CN203633039U CN201320751424.2U CN201320751424U CN203633039U CN 203633039 U CN203633039 U CN 203633039U CN 201320751424 U CN201320751424 U CN 201320751424U CN 203633039 U CN203633039 U CN 203633039U
- Authority
- CN
- China
- Prior art keywords
- air
- conditioning unit
- cooling
- cooler
- valve
- 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.)
- Expired - Lifetime
Links
- 238000004378 air conditioning Methods 0.000 title claims abstract description 41
- 238000001816 cooling Methods 0.000 claims abstract description 93
- 239000003507 refrigerant Substances 0.000 claims abstract description 37
- 239000007788 liquid Substances 0.000 claims abstract description 13
- 238000001704 evaporation Methods 0.000 claims description 26
- 230000008020 evaporation Effects 0.000 claims description 26
- 230000004907 flux Effects 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 2
- 230000008676 import Effects 0.000 claims description 2
- 238000005057 refrigeration Methods 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 239000002826 coolant Substances 0.000 abstract description 5
- 239000000428 dust Substances 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 239000012809 cooling fluid Substances 0.000 description 1
- 235000019628 coolness Nutrition 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000010365 information processing Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Images
Landscapes
- Cooling Or The Like Of Electrical Apparatus (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
Abstract
The utility model discloses an air conditioning unit, including refrigerating system and electrical system, refrigerating system includes compressor, condenser, evaporimeter, flash tank and throttling element, and electrical system includes a plurality of electronic components. The air conditioning unit further comprises a cooling loop, the cooling loop comprises a siphon pipe and a cooler which are sequentially communicated, an inlet of the siphon pipe is communicated with the liquid space of the flash evaporator, an outlet of the cooler is communicated with the gaseous space of the flash evaporator, and the cooler and the electronic components in the cooling loop are configured in a heat transfer relationship to enable the electronic components to be cooled. The cooling effect of the cooling medium is good and the cooling efficiency is high compared with air cooling and water cooling; an air cooling system is omitted, so that the equipment is small in size and noise is reduced; the refrigerant of the air conditioning unit is utilized to complete the refrigeration cycle, so that the electronic components can be in a closed environment, the influence of dust is avoided, the interior is clean, and the service life is long.
Description
Technical field
The utility model relates to refrigeration technology field, and particularly air-conditioning unit electronic devices and components is cooling.
Background technology
Current, for refrigeration air-conditioner unit, the rectifier of unit, inverter constant power device in use produce amount of heat with increased power, need effective type of cooling guaranteed output device be operated in reliable temperature range, and conventional at present have modes such as air-cooled, water-cooled, refrigerant be cooling.
There is following problems in air-cooled technology:
1. wind-cooling heat dissipating ability, if cooling load demand is large, requires air quantity large, causes blower fan volume large;
2. Wind Volume causes fan noise bigger than normal;
3. reliability or the safe operation of air-cooled laying dust problem to electronic devices and components exerts an influence;
4. cooling blower modulability is poor, and energy consumption is high, not energy-conservation;
5. blower fan air draft causes unit installation environment temperature to raise, and need to increase corresponding air-conditioning system to machine room.
There is following problems in Water Cooling Technology:
1, need external supply and drain water system;
2, the easy fouling of water, causes the long-term rear cooling effect variation that uses;
3, the conductance of non-pure water is high, once pipeline leaks, will cause short circuit, causes unit to damage.
For the cooling technology of existing employing refrigerating system coolant, carry out cooling for draw high pressure refrigerant from condenser.In unit running process, from the high-pressure liquid refrigerant of condenser after throttling for cool electronic components and parts, the refrigerant return-air after heat absorption evaporation flows into evaporator.For this type of cooling, there are the following problems, and the refrigerant of drawing from condenser need to be used restricting element throttling, and cost is high, and cooling consumed refrigerant amount is large, reduced the efficiency of unit.
Utility model content
In order to overcome the deficiencies in the prior art, the utility model provides a kind of air-conditioning unit, to solve the problem that electronic devices and components cooling effect is poor, cost is high in air-conditioning unit in prior art.
A kind of air-conditioning unit, comprise refrigerating system and electric-control system, refrigerating system comprises compressor, condenser, evaporator, flash evaporation and restricting element, electric-control system comprises some electronic devices and components, air-conditioning unit also comprises cooling circuit, cooling circuit comprises the siphon pipe and the 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, makes this electronic devices and components cooling.
Further, comprise many cooling branch roads, on every cooling branch road, be at least provided with a cooler.
Further, cooler is multiple, series, parallel or series-parallel connection between multiple coolers.
Further, cooling branch road also comprises the adjuster valve for regulating cold medium flux.
Further, adjuster valve is electromagnetically operated valve and/or choke valve.
Further, choke valve is electric expansion valve, heating power expansion valve, capillary or restricting orifice.
Further, also comprise the temperature sensor for detection of the temperature of cooler and/or electronic devices and components.
Further, also comprise the controller of the temperature value regulating and controlling valve opening for detecting according to temperature sensor.
Further, cooling branch road also comprises break valve.
Further, cooling branch road also comprises the filter of the refrigerant for filtering flash evaporation output.
Further, electronic devices and components comprise at least one in rectifier, inverter, frequency converter, reactor, Intelligent Power Module, processor.
Further, air-conditioning unit is centrifugal refrigerating machines.
The beneficial effects of the utility model are: with respect to air-cooled and water-cooled, and the good cooling results that refrigerant is cooling, cooling effectiveness is high; Save air cooling system, make equipment volume little, reducing noise; Utilize the refrigerant of air-conditioning unit to complete kind of refrigeration cycle, make the electronic devices and components can be in closed environment, avoid dust impact, inner clean, service life be long; With respect to the type of cooling of drawing refrigerant from condenser, can save choke valve, reduce costs.
Accompanying drawing explanation
Fig. 1 is the air-conditioning unit structure framework schematic diagram of the utility model embodiment mono-;
Fig. 2 is the electronic devices and components cooling system structure framework schematic diagram with multichannel cooling circuit of the utility model embodiment mono-;
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
Embodiment mono-
As shown in Figure 1, the air-conditioning unit of the present embodiment comprises the evaporator 10, compressor 20, condenser 30, flash evaporation 40 and the restricting element that form refrigerating system, restricting element comprise be connected in the first throttle element 51 between evaporator 10 and flash evaporation 40 and be connected in condenser 30 and flash evaporation 40 between second section fluid element 52.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-conditioning unit is handpiece Water Chilling Units, further, is centrifugal refrigerating machines.
The electric-control system of air-conditioning unit comprises some electronic devices and components, wherein portions of electronics components and parts, particularly semiconductor power device and the information processing chip larger needs of caloric value in the time of work are cooling, as rectifier, inverter, IPM module (Intelligent Power Module), chopper circuit, reactor and some CPU.
For the cooling electronic devices and components of cooling needs, air-conditioning unit comprises cooling circuit, this cooling circuit comprises the cooler 60 and the 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 distributing while 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 realize siphonage, need to be by the setting height(from bottom) of cooler 60 junction lower than siphon pipe 70 and flash evaporation 40.
After air-conditioning unit starting, make flash evaporation 40 export the liquid refrigerant of supercooled state, enter into cooler 60 through siphon pipe.Refrigerant absorbs the heat of vaporization of electronic devices and components herein, and formation gaseous coolant enters into the gaseous space on flash evaporation 40 tops by connecting line, again get back in the cooling cycle system of air-conditioning unit.By siphonage, without external impetus, refrigerant can circulate between flash evaporation 40, siphon pipe 70 and cooler 60, constantly absorbs the heat that electronic devices and components distribute, and is its cooling.When after compressor emergency shutdown, in flash evaporation, there be not liquid refrigerants, siphon stops, and in cooler 60, passes through without refrigerant, the cooling fluid of electronic devices and components is stopped.
Because the liquid refrigerants in flash evaporation 40 is in supercooled state, can utilize the direct cool electronic components and parts of this refrigerant, in cooling circuit, choke valve can be set, reduce the cost of air-conditioning unit.
In order to strengthen the control of the cold output to cooler 60, make electronic devices and components in suitable temperature range, in this cooling circuit, be also provided with the adjuster valve 70 for regulating cold medium flux.Adjuster valve 70 can be electromagnetically operated valve, or has the choke valve of throttling action, as electric expansion valve, heating power expansion valve, capillary or restricting orifice and the wherein combination of two or more throttling device.In the time that adjuster valve 70 is electromagnetically operated valve, electromagnetically operated valve can arrange on the optional position of cooling circuit; In the time that adjuster valve 70 is choke valve, choke valve is located between flash evaporation 40 and cooler 60, with the liquid refrigerants throttling to flash evaporation output.In order further to strengthen the control to refrigerant in cooling circuit, also can not only electromagnetically operated valve be set but also choke valve is set.
Preferably, on the liquid flowing tube road before choke valve, be also provided with filter, keep the fail safe of choke valve operation.
Preferably, be provided with break valve at arrival end and/or the port of export of cooling circuit, be convenient in emergency circumstances control opening or turn-offing of cooling circuit, and be convenient to replacing and the maintenance of accessory in cooling circuit.
Air-conditioning unit also comprises the temperature sensor for detection of electronic devices and components 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-conditioning unit is according to detecting that temperature carrys out the aperture of electromagnetic valve for adjusting and/or choke valve, so that in frequency conversion drive dress electronic devices and components temperature range.Except avoiding excess Temperature, also will prevent that temperature is too low, the too low meeting of temperature declines the stress ability to bear of electronic devices and components, is hit, vibrates easy fault or damage, and low temperature also can make device surface form condensation, the appearance meeting of condensation brings potential safety hazard to electronics, electrical system.
Cooler 60 is the inner metallic cold plate that is embedded with refrigerant flow path, metallic cold plate contacts with electronic devices and components, also can be according to the factor such as shape, cooling requirement of site environment situation, electronic devices and components, select suitable cooler type, for example, for can not contact heat-exchanging or to cooling less demanding device, can select fin-tube heat exchanger, finned plate heat exchanger etc. as cooler.
Preferably, electronic devices and components are located in the housing of a sealing, 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 utilance and the cooling effectiveness of refrigerant, due in enclosed environment, can also prevent the impact of dust accumulation on heat radiation, not contact with outside air and can also prevent that condensation from appearring in the too low frequency conversion drive dress electronic devices and components surface that makes of temperature.
These electronic devices and components comprise at least one in rectifier, inverter, frequency converter, reactor, Intelligent Power Module, processor.
According to the technical scheme of embodiment mono-, 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-conditioning unit.
Embodiment bis-
If desired the quantity of cooling electronic devices and components is more, or be subject to the restriction of installing space, set structure, cannot complete cooling by a cooler, this cooling circuit comprises many, every branch road is provided with at least one cooler, and adjuster valve is set on demand, adjuster valve is electromagnetically operated valve and/or choke valve.The difference of the present embodiment and embodiment mono-is, comprises many cooling circuits.
As shown in Figure 2, for the present embodiment is with the air-conditioning unit schematic diagram of many cooling branch roads.This cooling circuit comprises three branch roads, the liquid refrigerants of exporting from flash evaporation 40 is after part flow arrangement shunting, enter the three cooling branch roads in tunnel (three cooling branch road also can directly be connected with flash evaporation 40 by siphon pipe respectively), on every branch road, be equipped with adjuster valve 70 and cooler 60.The present embodiment is take cooling air conditioning frequency converter as example, and this frequency converter comprises rectifier, inverter and reactor, respectively with every branch road on cooler 60 be configured to heat transfer relation, be the coolings of these components and parts by cooler 06.Further, on pipeline before liquid refrigerants shunting or after heat absorption is confluxed, a total adjuster valve also can be set, if before being arranged on liquid refrigerants shunting, this total adjuster valve is electromagnetically operated valve and/or choke valve, after if arrange, refrigerant confluxes, this total adjuster valve is electromagnetically operated valve.
Because rectifier wherein and the heat radiation of inverter are had relatively high expectations, the branch road adjuster valve on these two branch roads is adjustable adjuster valve, as electric expansion valve, adjustable orifice plate or electromagnetically operated valve, regulate the aperture of this adjuster valve according to the actual temperature of rectifier and inverter, to obtain suitable cold medium flux.The branch road adjuster valve being positioned on another branch road can adopt fixed adjuster valve, as fixing orifice plate or capillary, mates best restricting element according to systematic function.Be wherein that rectifier and inverter contact with metallic cold plate with the metallic cold plate structure of refrigerant circulation pipeline for the cooler of cooling rectifier and inverter, 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 rate is fast, cooling effectiveness is high, can greatly reduce the requirements of type selecting of volume and the element of current transformer.
Wherein rectifier and inverter also can be cooling by a cooling circuit, and rectifier arranges two coolers of connecting on same cooler or on a branch road with inverter arrangements, and two coolers are respectively rectifier and inverter is cooling.Can reduce like this control of Dui Yi road adjuster valve, simplify control and saving components and parts, reduce costs.
The cooling system providing according to the utility model can well solve the cooling problem of electronic devices and components, and the cooling capacity of refrigerant is better than air-cooled and water-cooled; Can also be according to cooling requirement, regulate the flow of each branch road refrigerant; Refrigerant is insulator, does not have short circuit or electric leakage hidden danger, safe, utilizes the refrigerant of air-conditioning unit to complete kind of refrigeration cycle, makes the electronic devices and components can be in closed environment, avoids dust impact, and inner clean, service life is long.
Because the refrigerant for cooling use is taken from flash evaporation, in supercooled state, can cancel choke valve, reduce costs, owing to cancelling choke valve, in cooling circuit, refrigerant flow rate is sooner, cooling capacity is stronger.In order to improve cooling control precision, adjuster valve also can be set, but with respect to prior art, because refrigerant temperature is lower, cooling needed coolant quantity can reduce, reduce the cooling medium charging amount of unit, reduce the size of choke valve, also can reduce costs.
To sum up, according to the technical solution of the utility model, can effective cooling the electronic devices and components of heating, reduce the cost of air-conditioning unit, improve cooling capacity and cooling effectiveness, improve the efficiency of unit.
The above embodiment has only expressed several execution mode of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection range of the present utility model.Therefore, the protection range of the utility model patent should be as the criterion with claims.
Claims (12)
1. an air-conditioning unit, comprises refrigerating system and electric-control system, and described refrigerating system comprises compressor, condenser, evaporator, 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 the 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, makes this electronic devices and components cooling.
2. air-conditioning unit according to claim 1, is characterized in that, described cooling circuit comprises many branch roads, is at least provided with a cooler on every described branch road.
3. air-conditioning unit according to claim 1, is characterized in that, described cooler is multiple, series, parallel or series-parallel connection between described multiple coolers.
4. according to the air-conditioning unit described in claims 1 to 3 any one, it is characterized in that, described cooling circuit also comprises the adjuster valve for regulating cold medium flux.
5. air-conditioning unit according to claim 4, is characterized in that, described adjuster valve is electromagnetically operated valve and/or the choke valve being arranged on described siphon pipe.
6. air-conditioning unit 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-conditioning unit according to claim 4, is characterized in that, also comprises the temperature sensor for detection of the temperature of described cooler and/or described electronic devices and components.
8. air-conditioning unit according to claim 7, is characterized in that, also comprises the controller of control valve opening described in the temperature value control for detecting according to described temperature sensor.
9. according to the air-conditioning unit described in claims 1 to 3 any one, it is characterized in that, described cooling circuit also comprises break valve.
10. according to the air-conditioning unit described in claims 1 to 3 any one, it is characterized in that, described cooling circuit also comprises the filter of the refrigerant for filtering described flash evaporation output.
11. according to the air-conditioning unit described in claims 1 to 3 any one, it is characterized in that, described electronic devices and components comprise at least one in rectifier, inverter, frequency converter, reactor, Intelligent Power Module, processor.
12. according to the air-conditioning unit described in claims 1 to 3 any one, it is characterized in that, described air-conditioning unit is centrifugal refrigerating machines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320751424.2U CN203633039U (en) | 2013-11-25 | 2013-11-25 | air conditioning unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320751424.2U CN203633039U (en) | 2013-11-25 | 2013-11-25 | air conditioning unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203633039U true CN203633039U (en) | 2014-06-04 |
Family
ID=50819474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320751424.2U Expired - Lifetime CN203633039U (en) | 2013-11-25 | 2013-11-25 | air conditioning unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203633039U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104633873A (en) * | 2013-11-25 | 2015-05-20 | 珠海格力电器股份有限公司 | Air conditioning unit |
| CN107388644A (en) * | 2017-06-12 | 2017-11-24 | 珠海格力电器股份有限公司 | Variable-frequency water cooling unit and control method thereof |
| CN110351987A (en) * | 2019-07-15 | 2019-10-18 | 珠海格力电器股份有限公司 | Radiator, controller, photovoltaic electric equipment and radiating method |
| US10941955B2 (en) | 2017-10-27 | 2021-03-09 | Dometic Sweden Ab | Systems, methods, and apparatuses for providing communications between climate control devices in a recreational vehicle |
| US11254183B2 (en) | 2017-08-25 | 2022-02-22 | Dometic Sweden Ab | Recreational vehicle, cooling device, controlling system and method for controlling the cooling device |
-
2013
- 2013-11-25 CN CN201320751424.2U patent/CN203633039U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104633873A (en) * | 2013-11-25 | 2015-05-20 | 珠海格力电器股份有限公司 | Air conditioning unit |
| CN107388644A (en) * | 2017-06-12 | 2017-11-24 | 珠海格力电器股份有限公司 | Variable-frequency water cooling unit and control method thereof |
| US11254183B2 (en) | 2017-08-25 | 2022-02-22 | Dometic Sweden Ab | Recreational vehicle, cooling device, controlling system and method for controlling the cooling device |
| US11919363B2 (en) | 2017-08-25 | 2024-03-05 | Dometic Sweden Ab | Recreational vehicle, cooling device, controlling system and method for controlling the cooling device |
| US10941955B2 (en) | 2017-10-27 | 2021-03-09 | Dometic Sweden Ab | Systems, methods, and apparatuses for providing communications between climate control devices in a recreational vehicle |
| CN110351987A (en) * | 2019-07-15 | 2019-10-18 | 珠海格力电器股份有限公司 | Radiator, controller, photovoltaic electric equipment and radiating method |
| CN110351987B (en) * | 2019-07-15 | 2024-02-23 | 珠海格力电器股份有限公司 | Radiator, controller, photovoltaic electric equipment and radiating method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104640421A (en) | Air conditioning unit | |
| CN103486752A (en) | Power electronic device cooling system and distributed power generation system | |
| WO2016155081A1 (en) | Server rack heat sink system with combination of liquid cooling device and auxiliary heat sink device | |
| CN104501648A (en) | Cooling system for cabinet of data machine room | |
| CN203633039U (en) | air conditioning unit | |
| CN102425831A (en) | Motorless split-type heat-pipe air conditioner combined unit and refrigerating method | |
| CN104633873A (en) | Air conditioning unit | |
| CN104613668A (en) | Combined air-conditioning system as well as control method thereof | |
| CN102393052A (en) | Unpowered integral combined heat-pipe air conditioning unit and refrigerating method thereof | |
| CN102967019A (en) | Direct evaporation integral heat pipe exchanger | |
| CN204359196U (en) | A kind of data center module rack cooling system | |
| CN104791925A (en) | Energy-saving type open cold supply system for cooling tower | |
| CN111457509B (en) | Energy-saving air conditioner | |
| CN211011738U (en) | Small-sized water-cooling cold air conditioning system | |
| CN203633038U (en) | air conditioning unit | |
| CN104214854A (en) | Integrated machine room air conditioning system | |
| CN102954548A (en) | Direct evaporation split type heat pipe heat-exchanger | |
| CN203163566U (en) | Anti-condensation refrigerant circulation heat pipe system | |
| CN104613667A (en) | Combined air-conditioning system as well as control method thereof | |
| CN104252187B (en) | A kind of control method of secondary water loops server cabinet cooling system | |
| CN204115119U (en) | Air-conditioning and refrigerating box all-in-one | |
| CN203518143U (en) | Air conditioner | |
| CN203518304U (en) | Power electronic device cooling system and distributed power generation system | |
| CN211953115U (en) | Energy-saving air conditioner | |
| CN203605376U (en) | Integrated machine room air conditioning system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140604 |