CN203068741U - Heat recovery air conditioning unit - Google Patents
Heat recovery air conditioning unit Download PDFInfo
- Publication number
- CN203068741U CN203068741U CN2012206570999U CN201220657099U CN203068741U CN 203068741 U CN203068741 U CN 203068741U CN 2012206570999 U CN2012206570999 U CN 2012206570999U CN 201220657099 U CN201220657099 U CN 201220657099U CN 203068741 U CN203068741 U CN 203068741U
- Authority
- CN
- China
- Prior art keywords
- heat
- air
- pipe
- conditioning unit
- exchanger
- 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 - Fee Related
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/56—Heat recovery units
Landscapes
- Other Air-Conditioning Systems (AREA)
Abstract
The utility model relates to an air conditioning unit, in particular to a heat recovery air conditioning unit. The heat recovery air conditioning unit comprises an air conditioning unit main body and further comprises an intelligent control system and a heat pipe type heat exchanger. The air conditioning unit main body comprises an air exhaust channel and a fresh air channel which are arranged side by side. The intelligent control system is connected with an air source heat pump. One part of the air source heat pump is arranged in the air exhaust channel and the other part of the air source heat pump is arranged in the fresh air channel. A heat pipe recovering side of the heat pipe type heat exchanger is arranged in the air exhaust channel and a heat pipe releasing side of the heat pipe type heat exchanger is arranged in the fresh air channel. According to the heat recovery air conditioning unit, first level recovery and second level recovery are conducted on air conditioning energy in exhausted air in a building, exhausted dirty air and fresh air are totally insulated, cross contamination is not generated, a used heat pipe is easy to wash, and the heat recovery air conditioning unit is particularly suitable for occasions with high sanitary requirements.
Description
Technical field
The utility model relates to a kind of new blower fan group, relates in particular to a kind of recuperation of heat air-conditioning unit.
Background technology
It is to carry out direct air draft with indoor that existing indoor ventilating fan group is changed wind, draws outside new wind then again, and the easy like this foul atmosphere that will discharge that causes mixes mutually with fresh air, has caused cross pollution.And the employed heat exchanger of unit, such as plate-fin heat recovering heat exchanger, rotary-type heat recovering heat exchanger, heat exchanger places inside, is not easy to clean, and the time has been grown and can produce dirt, makes the wind that exchanges for contain assorted flavor.
The utility model content
The purpose of this utility model is to solve the problems of the prior art, and a kind of recuperation of heat air-conditioning unit is provided.
The technical solution of the utility model is:
Recuperation of heat air-conditioning unit, comprise the air-conditioning generating set main body, described air-conditioning generating set main body comprises air exhaust passage and the new wind passage that is arranged side by side, it is characterized in that: also comprise an intelligence control system, described intelligence control system connects an air supply heat pump, described air supply heat pump partly places in the air exhaust passage, and another part places in the new wind passage; Also comprise a heat-pipe heat exchanger, the heat pipe of described heat-pipe heat exchanger reclaims side and is arranged in the air exhaust passage, and its heat pipe discharges side and is arranged in the new wind passage.
Described air-conditioning generating set main body also comprises an exhaust blower, and described exhaust blower is positioned at the import of described air exhaust passage; Also comprise a pressure fan, described pressure fan is positioned at the exit of described new wind passage.
Described heat-pipe heat exchanger middle part is provided with a rotating shaft, is rotationally connected between described heat-pipe heat exchanger and described rotating shaft; Also be provided with a heat pipe steer-drive, described heat pipe steer-drive is provided with a driving mechanism, and described driving mechanism connects described heat-pipe heat exchanger.
In the use, drive described heat-pipe heat exchanger by described heat pipe steer-drive and change angle, adjust heat pipe and reclaim side and heat pipe and discharge height relationships between the side, and then adjustment heat exchange direction, be applicable to winter operational mode and summer operational mode.
Described air supply heat pump comprises compressor, four-way change-over valve, outside heat-exchanger rig, indoor heat-exchanger rig and expansion valve, described compressor and outside heat-exchanger rig are installed on the both sides that described heat pipe reclaims side, described indoor heat-exchanger rig is arranged in the described new wind passage, described outside heat-exchanger rig is connected by pipeline with the indoor heat-exchanger rig, forms a circulatory system; Compressor is connected with a four-way change-over valve, and inserts in the described pipeline by described four-way change-over valve; Also be connected with described expansion valve in the described pipeline.
Described outside heat-exchanger rig is arranged at described air exhaust passage exit.
Described indoor heat-exchanger rig is arranged at the inboard that heat pipe discharges side.
Described intelligence control system is arranged on the described air exhaust passage.
Described intelligence control system is provided with a network control interface, so that network control.
Beneficial effect: the utility model unit carries out one-level with the air conditioner energy in the air draft in the building and reclaims and secondary recovery, then the air conditioner energy and the extra air conditioner energy that increases of compressor that reclaim is sent in the building by the outlet of new wind passage together.This unit is not only realized sending into fresh air in building, reaches air conditioning comfortableness and clean functional requirement, and has reached energy-efficient requirement in use; And this unit can be isolated fully with foul atmosphere and the fresh air of discharging, and can not cause cross pollution, and the heat pipe of use is easy to clean, and is fit to very much the occasion higher to hygienic requirements.
Description of drawings
Fig. 1 is the utility model unit vertical view;
Fig. 2 overlooks schematic diagram for the utility model unit summer operation;
Fig. 3 overlooks schematic diagram for the utility model unit winter operation;
Fig. 4 by in the utility model the structural representation of use heat pipe;
The enforcement figure that Fig. 5 is indoor for the utility model is installed on.
The specific embodiment
For technological means, technical characterictic, utility model purpose and the technique effect that the utility model is realized is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
Shown in Fig. 1 ~ 3, a kind of recuperation of heat air-conditioning unit A comprises the air exhaust passage 1 and the new wind passage 2 that are arranged side by side, is provided with exhaust blower 12 at import 11 places of air exhaust passage 1, is provided with pressure fan 22 at outlet 21 places of new wind passage 2.
The utility model unit A also comprises intelligence control system 3, heat-pipe heat exchanger 5 and the air supply heat pump of being made up of compressor 4, four-way change-over valve 9, outside heat-exchanger rig 6, indoor heat-exchanger rig 7 and expansion valve 8, intelligence control system 3 is installed in air exhaust passage 1 place, intelligence control system 3 control connection compressors 4 are connected with compressor 4, four-way change-over valve 9, circulatory system of expansion valve 8 formation respectively between the two ends of outside heat-exchanger rig 6 and indoor heat-exchanger rig 7.Four-way change-over valve 9 is used for adjusting the cooling fluid circulation path.Intelligence control system 3 is provided with a network control interface, so that network control.
Heat-pipe heat exchanger 5 middle parts are provided with a rotating shaft, are rotationally connected between heat-pipe heat exchanger 5 and rotating shaft.Also be provided with a heat pipe steer-drive 97, heat pipe steer-drive 97 is provided with a driving mechanism, and driving mechanism connects heat-pipe heat exchanger 5.In the use, drive heat-pipe heat exchanger 5 by the heat pipe steer-drive and change angles, adjust heat pipe and reclaim side and heat pipe and discharge height relationships between the side, and then adjustment heat exchange direction, be applicable to winter operational mode and summer operational mode.The heat pipe that is arranged in the air exhaust passage 1 reclaims lateral root according to the pattern difference, can be used as heat pipe cold recovery side 51 or heat pipe heat recovery side 52.The heat pipe that is arranged in the new wind passage 2 discharges lateral root according to the pattern difference, can be used as the heat pipe cold and discharges side 53 or heat pipe heat release side 54.Below this heat-pipe heat exchanger, be provided with a condensate pipe 55.Compressor 4 and outside heat-exchanger rig 6 are installed in the both sides of heat pipe cold recovery side 51 and heat pipe heat recovery side 52, outside heat-exchanger rig 6 is arranged on outlet 13 places of air exhaust passage 1, indoor heat-exchanger rig 7 is arranged on that the heat pipe cold discharges side 53 and the heat pipe heat discharges side 54 inboards, roughly in new wind passage 1 import 23 with export between 21.
The coil pipe of outside heat-exchanger rig 6 has different functions in summer or winter, can be respectively as air supply heat pump cold recovery coil pipe 61 and air supply heat pump heat recovery coil pipe 62.The coil pipe of indoor heat-exchanger rig 7 has different functions in summer or winter, and the air supply heat pump cold of conduct discharges coil pipe 71 and air supply heat pump heat release coil pipe 72 respectively.
The heat pipe basic principle of the utility model employing is as follows as shown in Figure 4:
Heat-pipe heat exchanger 5 is the fabulous artificial members of a kind of heat transfer property, is made up of airtight metal tube and internal working medium usually.Manage outer suit fin, increasing heat exchange area and heat exchange amount, 91 flow through direction (outdoor new wind of winter indoor exhaust wind or summer) for cold air flows through direction (winter outdoor new wind or summer indoor exhaust wind), 94 for hot-air for liquid backflow direction, 93 for steam up direction, 92 among the figure.
Operation principle is: liquid refrigerant is because the gravity effect accumulates in the low side of heat pipe, when winter indoor exhaust wind or summer outdoor fresh air flow through low side when being heated, inner liquid refrigerant just is subjected to thermal evaporation, forms steam, steam flows to high-end; Simultaneously, winter outdoor fresh air or summer indoor exhaust wind flow through that opposite heat tube cools off when high-end, be condensed into liquid state after the steam in high-end is caught a cold, then because the gravity effect, liquid refrigerant flows to low side along the heat pipe inwall, is heated again to become steam.This process constantly circulates, and also just constantly the cold in the air draft (summer) or heat (winter) is delivered in the fresh air, has reduced the novel wind energy consumption, realizes energy-conservation purpose.
Be installed on indoor schematic diagram as Fig. 5 for the utility model unit A, wherein this unit A be installed in indoor one jiao, 95 is that dining room, 96 is fresh wind tube among the figure, and fresh wind tube 96 joins with new wind passage 2 pipelines.Be the utility model unit at the summer operation schematic diagram as Fig. 2:
Unit A operational mode is placed refrigeration mode, and this moment, the heat pipe angle of inclination was air exhaust passage 1 height, and new wind passage 2 is low.The temperature of air draft is lower, and gaseous working medium in the heat pipe is cooled to liquid, and liquid refrigerant is because the gravity effect flows to the new wind passage 2 of low side, and air draft is heated, and temperature raises, and the cold in the air draft is recovered.This is that one-level reclaims.
Because organic efficiency can not reach 100%, at this moment temperature of outgoing air still is lower than outdoor environment temperature, at this moment discharge air flow is through air supply heat pump cold recovery coil pipe 61, wherein cold-producing medium is cooled off, and air draft is heated, and temperature further raises, and the cold in the air draft is reclaimed fully, indoor exhaust wind dirty, high temperature is discharged to outside the building, and this is secondary recovery.
For new wind passage 2, the flow through low side of heat pipe of the higher outdoor fresh air of temperature, have from high-end cooling down in the heat pipe this moment and flow to the liquid refrigerant of low side, liquid refrigerant is evaporated to gaseous state under the fresh air heating of higher temperature, flow to high-end, and fresh air is cooled, and temperature descends, and the cold in the air draft is released.This is new wind precooling.
Discharged coil pipe 71 by the fresh air of the precooling air supply heat pump cold of further flowing through, fresh air adds thermosetting steam with the coil pipe inner refrigerant, is sucked by compressor 4, forms the circulation of air supply heat pump system; And fresh air is cooled, and temperature further reduces, and fresh refrigerant air is transported in the building by pressure fan then.This is the cold again of new wind, because unit A realizes twice recovery of cold in the air draft, so energy-saving effect is fairly obvious.
Be the utility model unit operation logic figure in the winter time as Fig. 3:
Unit A operational mode is placed heating mode, and the air supply heat pump system is by the commutation effect of four-way change-over valve, and refrigerant flow direction takes a turn for the worse, and also overturn in the heat pipe angle of inclination simultaneously, for air exhaust passage is low, and new wind passage height.The temperature of air draft is higher, and liquid refrigerant in the heat pipe is heated to be gas, and gaseous working medium flows to high-end new wind passage, and air draft is cooled, and temperature reduces, and the heat in the air draft is recovered, and this is that one-level reclaims.
Because organic efficiency can not reach 100%, at this moment temperature of outgoing air still is higher than outdoor environment temperature, at this moment discharge air flow is through the air supply heat pump heat recovery coil pipe 62 of air supply heat pump system, wherein cold-producing medium is heated, and air draft is cooled, and temperature further reduces, and the heat in the air draft is reclaimed fully, indoor exhaust wind dirty, low temperature is discharged to outside the building, and this is secondary recovery.
For new wind passage 2, the outdoor fresh air that temperature is lower the high-end of heat pipe of flowing through, having in the heat pipe this moment is evaporated from low side flows to high-end gaseous working medium, gaseous working medium is condensed into liquid state under the fresh air cooling of lower temperature, flow to low side, and fresh air is heated, temperature raises, heat in the air draft is released, and this is new wind preheating.
The fresh air that the is preheated air supply heat pump heat of further flowing through discharges coil pipe 72, and fresh air is cooled to liquid state with the coil pipe inner refrigerant, flows to expansion valve, forms the circulation of air supply heat pump system; And fresh air is heated, and temperature further raises, and fresh warm air is transported in the building by pressure fan then.This is the heat again of new wind, because unit is realized twice recovery of heat in the air draft, so energy-saving effect is fairly obvious.
In the intelligence control system 3 of the present utility model computerized control system is installed, its button has as follows:
Automatically: the new wind-warm syndrome degree unit according to control enters refrigeration, dehumidifying or heating mode automatically;
Refrigeration: unit is pressed the refrigerating state operation, and new wind is at first handled through system's refrigeration after heat pipe reclaims again and sent into the room;
Dehumidifying: remake after unit recovers energy earlier to new wind and fall wet process and send into the room;
Ventilate: unit is discharged indoor foul atmosphere, sends into fresh air, can be reclaimed, and also can not carry out energy and reclaim;
Heat: system is by heating the state operation, and new wind at first heats to handle through system after the heat pipe energy reclaims again sends into the room.
The utility model unit A also can adopt the network centralized management, network centralized management is exactly with a line control machine or the computer realization centralized management function to many units, owing to increased special-purpose network manager, make that the networking function of unit is very flexible, need not to arrange address, the air-conditioning networking of any amount, the length of networking line is the longest to reach 1000 meters, can carry out independently control such as function setting, timing to every air-conditioner, also can carry out colony's control to many air-conditioners of networking.
The utlity model has following characteristics:
1) Zhuo Yue energy-efficient performance, according to different configurations, heat pipe sensible heat organic efficiency free of charge can reach more than 80% from 50% maximum.Add the recuperation of heat of air supply heat pump simultaneously, can realize that not only air conditioner energy reclaims in 100% air draft, can also produce additional cold and hot amount, reach the user to the requirement of new wind-warm syndrome degree.
2) new wind and air draft can be isolated fully, do not produce any cross pollution.
3) there are not low temperature limitation such as icing in unit, uses the zone more extensive.
4) the unit heat pipe can clean, long service life.
5) unit can guarantee the cleannes of new wind according to the first effect of user's request configuration, middle effect and even inferior high-efficient air filter.
6) unit can dispose humidifier according to user's request, realizes humidity regulation.
7) at transition season, unit can be set to not have heat recovery mode, in the building of outdoor fresh refrigerant air can being made a gift to someone, reduces operation of air conditioner, reaches energy-conservation purpose.
8) unit self has phase sequence, the high-low pressure protection, and the overheat of compressor protection, the delivery temperature protection, multiple protectives such as compressor start delay protection and compressor, blower fan overcurrent protection guarantee that unit operation is reliable.
9) general popular liquid crystal display line traffic control guidance panel can be controlled in the 1200m distance range, and it is convenient, attractive in appearance to use.
10) can realize building control networking by the RS-485 communication, be easier to Centralized Monitoring.
11) use installation convenient, the scene only need connect corresponding airduct and get final product, and need not to lay refrigerant line and chilled water pipeline, and initial gross investment is low.
12) unit can be realized the segmentation installation in position, is convenient to the job site transportation, and is in place, installs.
Being the utility model preferred embodiment only in sum, is not to limit practical range of the present utility model.Be that all equivalences of doing according to the content of the utility model claim change and modification, all should belong to technology category of the present utility model.
Claims (7)
1. recuperation of heat air-conditioning unit, comprise the air-conditioning generating set main body, described air-conditioning generating set main body comprises air exhaust passage and the new wind passage that is arranged side by side, it is characterized in that: also comprise an intelligence control system, described intelligence control system connects an air supply heat pump, described air supply heat pump partly places in the air exhaust passage, and another part places in the new wind passage; Also comprise a heat-pipe heat exchanger, the heat pipe of described heat-pipe heat exchanger reclaims side and is arranged in the air exhaust passage, and its heat pipe discharges side and is arranged in the new wind passage.
2. recuperation of heat air-conditioning unit according to claim 1, it is characterized in that: described air-conditioning generating set main body also comprises an exhaust blower, and described exhaust blower is positioned at the import of described air exhaust passage; Also comprise a pressure fan, described pressure fan is positioned at the exit of described new wind passage.
3. recuperation of heat air-conditioning unit according to claim 1 is characterized in that: be provided with a rotating shaft in the middle part of the described heat-pipe heat exchanger, be rotationally connected between described heat-pipe heat exchanger and described rotating shaft; Also be provided with a heat pipe steer-drive, described heat pipe steer-drive is provided with a driving mechanism, and described driving mechanism connects described heat-pipe heat exchanger.
4. recuperation of heat air-conditioning unit according to claim 1, it is characterized in that: described air supply heat pump comprises compressor, four-way change-over valve, outside heat-exchanger rig, indoor heat-exchanger rig and expansion valve, described compressor and outside heat-exchanger rig are installed on the both sides that described heat pipe reclaims side, described indoor heat-exchanger rig is arranged in the described new wind passage, described outside heat-exchanger rig is connected by pipeline with the indoor heat-exchanger rig, forms a circulatory system; Compressor is connected with a four-way change-over valve, and inserts in the described pipeline by described four-way change-over valve; Also be connected with described expansion valve in the described pipeline.
5. recuperation of heat air-conditioning unit according to claim 4, it is characterized in that: described outside heat-exchanger rig is arranged at described air exhaust passage exit.
6. recuperation of heat air-conditioning unit according to claim 4 is characterized in that: described indoor heat-exchanger rig is arranged at the inboard that heat pipe discharges side.
7. according to claim 1,2,3,4 or 5 described recuperation of heat air-conditioning units, it is characterized in that: described intelligence control system is arranged on the described air exhaust passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206570999U CN203068741U (en) | 2012-12-03 | 2012-12-03 | Heat recovery air conditioning unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206570999U CN203068741U (en) | 2012-12-03 | 2012-12-03 | Heat recovery air conditioning unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203068741U true CN203068741U (en) | 2013-07-17 |
Family
ID=48767520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012206570999U Expired - Fee Related CN203068741U (en) | 2012-12-03 | 2012-12-03 | Heat recovery air conditioning unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203068741U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398430A (en) * | 2013-08-13 | 2013-11-20 | 朱军 | Heat-pump-type fresh air handing unit for waste heat recovery |
| CN104006462A (en) * | 2014-06-04 | 2014-08-27 | 多乐空气处理设备（苏州）有限公司 | Rotary-wheel type heat recovery air-handling unit and heating method thereof |
| CN104266277A (en) * | 2014-10-21 | 2015-01-07 | 东南大学 | Heat pipe heat recovery all fresh air dehumidification air-conditioning device |
| CN106016501A (en) * | 2016-07-29 | 2016-10-12 | 江苏赛诺浦节能科技有限公司 | Refrigeration and fresh air integrated outdoor unit special for mushroom house |
| CN107120757A (en) * | 2017-04-28 | 2017-09-01 | 同济大学 | It is a kind of to be combined the heat recovery type fresh air conditioner group constituted by three refrigerant circulations |
-
2012
- 2012-12-03 CN CN2012206570999U patent/CN203068741U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398430A (en) * | 2013-08-13 | 2013-11-20 | 朱军 | Heat-pump-type fresh air handing unit for waste heat recovery |
| CN104006462A (en) * | 2014-06-04 | 2014-08-27 | 多乐空气处理设备（苏州）有限公司 | Rotary-wheel type heat recovery air-handling unit and heating method thereof |
| CN104266277A (en) * | 2014-10-21 | 2015-01-07 | 东南大学 | Heat pipe heat recovery all fresh air dehumidification air-conditioning device |
| CN106016501A (en) * | 2016-07-29 | 2016-10-12 | 江苏赛诺浦节能科技有限公司 | Refrigeration and fresh air integrated outdoor unit special for mushroom house |
| CN107120757A (en) * | 2017-04-28 | 2017-09-01 | 同济大学 | It is a kind of to be combined the heat recovery type fresh air conditioner group constituted by three refrigerant circulations |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2016179884A1 (en) | Variable-refrigerant-flow radiant air-conditioning system | |
| CN203132011U (en) | Liquid desiccant regeneration heat-and-humidity independent treatment air-conditioner device | |
| CN203869369U (en) | Cooling and heating combined unit | |
| CN103017269A (en) | Solution dehumidification/regeneration heat and moisture independent treatment air conditioning device and energy-saving operation method thereof | |
| CN203068741U (en) | Heat recovery air conditioning unit | |
| CN106895530B (en) | A kind of water cold storage independent temperature-humidity control regional cold supply system | |
| CN201731575U (en) | Energy-saving and environment-friendly clean air conditioning system | |
| CN105135572A (en) | Heat pipe composite heat recovery type evaporative cooling air-conditioning system for data center | |
| CN106705489A (en) | Variable refrigerant flow system combined with air source heat pump hot water and control method of variable refrigerant flow system | |
| CN104930653A (en) | Whole house air environment system and control method thereof | |
| CN207132480U (en) | Monoblock type radiation air-conditioner unit | |
| CN106705203B (en) | A kind of family heat-pipe radiating apparatus compound using heat pump and electric heating | |
| CN206176840U (en) | White formula wind energy heat pump of coldization | |
| CN109341138B (en) | Combined air conditioning system of machine room and hot water system and control method thereof | |
| CN202955800U (en) | Heat pipe and heat pump type heat recovery fresh air unit | |
| CN205119549U (en) | Multi -functional heat pump type evaporation formula condensation air conditioning unit | |
| CN110057020A (en) | A kind of new and effective air energy heat pump aeration device | |
| CN206300381U (en) | Heating air source heat pump system with cold loop is crossed | |
| CN105135552A (en) | Air conditioning system | |
| CN102829519B (en) | Dehumidifying unit of double cold source all fresh air heat pump provided with cold carrying heat exchanger | |
| CN109520047A (en) | Air-source air conditioner | |
| CN202581632U (en) | Heat-pump air conditioning unit of evaporating type condenser | |
| CN103225850B (en) | A kind of silent air-conditioning system | |
| CN102147170B (en) | Water-cooling multi-split air-conditioning system with triple co-generation and central air-conditioning system | |
| CN208124521U (en) | Independent temperature-humidity control system with free cooling tower cooling supply |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130717 Termination date: 20151203 |
|
| EXPY | Termination of patent right or utility model |