CN108286758B - Heat pipe type machine room direct expansion energy-saving air conditioner assembly and use method thereof - Google Patents
Heat pipe type machine room direct expansion energy-saving air conditioner assembly and use method thereof Download PDFInfo
- Publication number
- CN108286758B CN108286758B CN201611093081.XA CN201611093081A CN108286758B CN 108286758 B CN108286758 B CN 108286758B CN 201611093081 A CN201611093081 A CN 201611093081A CN 108286758 B CN108286758 B CN 108286758B
- Authority
- CN
- China
- Prior art keywords
- machine room
- heat pipe
- temperature
- heat exchanger
- controller
- 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.)
- Active
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/28—Arrangement or mounting of filters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
-
- 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]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The invention relates to a heat pipe type machine room direct expansion energy-saving air conditioner assembly and a use method thereof, wherein the heat pipe type machine room direct expansion energy-saving air conditioner assembly comprises a heat pipe heat exchanger arranged on a machine room wall body, one part of the heat pipe heat exchanger is arranged on a machine room outer wall body, and the other part of the heat pipe heat exchanger is arranged on a machine room inner wall body; the heat pipe heat exchanger arranged on the outer wall of the machine room is connected with the exhaust fan through an exhaust pipe, and the heat pipe heat exchanger arranged on the inner wall of the machine room is connected with the blower through an air supply pipe; the blower is arranged in the machine room; the energy-saving air conditioner component comprises a surface cooler and a control system, wherein the surface cooler is respectively connected with a blower and an air supply opening; the control system comprises a temperature monitoring component and a controller which are arranged in the machine room. The automatic temperature control device has the advantages of simple structure, reasonable design, low production and maintenance cost, stable and reliable operation of indoor temperature control of the machine room, capability of performing corresponding temperature control according to different seasons, higher degree of automation, energy conservation and emission reduction, contribution to environmental protection and the like.
Description
Technical Field
The invention relates to the technical field of indoor temperature regulation of a machine room, in particular to a heat pipe type machine room direct expansion energy-saving air conditioner component and a use method thereof.
Background
The machine room is an important place for people to produce, test and the like, the machine room is often kept in a preset temperature environment, in the prior art, the control is often carried out by means of large-scale air conditioning, ventilation and air supply equipment, the use of the equipment not only increases the operation cost of enterprises and units, but also increases the maintenance cost, and the improvement on the aspects of energy conservation and emission reduction is not obvious. In addition, the requirements on the temperature and humidity in an important machine room are higher, and certain requirements on the degree of automatic control of the temperature and humidity are also met, so that at present, the research on the control is not more, and therefore, the research on the machine room temperature regulating device with low production and maintenance cost, energy conservation, environmental protection and reliable and stable operation has important research significance and economic significance.
Disclosure of Invention
Aiming at the defects of the air conditioner for adjusting the indoor temperature of a machine room in the prior art, the invention aims at: the heat pipe type machine room direct expansion energy-saving air conditioner component and the use method thereof have the advantages of simple structure, reasonable design, low production and maintenance cost, stable and reliable operation of indoor temperature regulation of the machine room, capability of carrying out corresponding temperature regulation according to different seasons, higher degree of automation, energy conservation and emission reduction, contribution to environmental protection and the like.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the heat pipe type machine room direct expansion energy-saving air conditioner component comprises a heat pipe heat exchanger arranged on a machine room wall, wherein one part of the heat pipe heat exchanger is arranged on an outer wall of the machine room, and the other part of the heat pipe heat exchanger is arranged on an inner wall of the machine room; the heat pipe heat exchanger arranged on the outer wall of the machine room is connected with the exhaust fan through an exhaust pipe, and the heat pipe heat exchanger arranged on the inner wall of the machine room is connected with the blower through an air supply pipe; the blower is arranged in the machine room; the energy-saving air conditioner component comprises a surface cooler and a control system, wherein the surface cooler is respectively connected with a blower and an air supply opening; the control system comprises a temperature monitoring component and a controller which are arranged in the machine room; the temperature monitoring assembly monitors indoor temperature signals of the machine room in real time and sends the signals to the controller, and the controller controls the on-off of the exhaust fan, the surface cooler and the blower according to the indoor temperature signals of the machine room.
As a further optimization of the scheme, the control system further comprises a humidity monitoring assembly and a humidifying dehumidifier which are arranged indoors, wherein the humidity monitoring assembly and the humidifying dehumidifier are connected with the controller; the humidity monitoring assembly monitors indoor temperature signals of the machine room in real time and sends the signals to the controller, and the controller controls the on-off of the humidifying dehumidifier according to the indoor humidity signals.
As a further optimization of the above scheme, the control system further comprises a memory, a comparator and a timer, wherein the memory, the comparator and the timer are all connected with the controller, a temperature preset value is preset in the memory, the comparator compares the temperature signal value in the machine room monitored by the temperature monitoring component with the temperature preset value and sends a comparison result to the controller, and when the temperature preset value is smaller than the temperature signal value in the machine room, the controller controls the discharge machine, the surface cooler and the blower to be connected according to the comparison result; otherwise, the switch is disconnected; the timer module is internally provided with a time module in four seasons of spring, autumn and winter, and the controller controls the discharge and the disconnection of the air blower according to the time module in three seasons of spring, autumn and winter; the controller also controls the exhaust fan, the surface cooler and the air blower to be connected according to the summer time module.
As a further optimization of the scheme, the pipe orifices of the exhaust pipe and the blast pipe are also provided with air filters.
As a further optimization of the scheme, the bottom of the heat pipe heat exchanger is provided with a moving component capable of sliding on the outer wall of the machine room, the moving component comprises a sliding rail and a telescopic rod which are arranged on the outer wall of the machine room, one end of the telescopic rod is fixedly connected with the outer wall of the machine room, and the other end of the telescopic rod is fixedly connected with the bottom of the heat pipe heat exchanger; the telescopic rod is an electric telescopic rod, a pneumatic telescopic rod or a hydraulic telescopic rod; the exhaust fan and the blower are respectively a variable-frequency exhaust fan and a variable-frequency blower.
As a further optimization of the scheme, the surface cooler is a fluorine system, and is matched with a fluorine unit matched with the fluorine system outdoors.
The application method of the heat pipe type machine room direct expansion energy-saving air conditioner component is characterized by comprising the following steps of:
1) Starting the energy-saving air conditioner assembly, and enabling the temperature monitoring assembly to monitor indoor temperature signals of the machine room in real time and send the signals to the controller;
2) The controller controls the on-off of the exhaust fan, the surface cooler and the blower according to the indoor temperature signal of the machine room; meanwhile, the controller also judges the current season, and when the current season is three seasons of spring, autumn and winter, the surface cooler is controlled to be in a disconnected state; when the temperature in the machine room is higher than the preset temperature in summer, the controller controls the surface cooler to be in a connected state for indoor cooling; when the temperature in the machine room is lower than the preset temperature, the controller controls the surface air cooler to be in a disconnected state; through the judgment, the temperature in the machine room is ensured to be kept at a preset temperature value.
Compared with the air conditioner for adjusting the indoor temperature of the machine room in the prior art, the heat pipe type machine room direct expansion energy-saving air conditioner component and the use method thereof have the following beneficial effects:
(1) The structural design is more reasonable, and the installation positions can be reasonably arranged according to actual needs; the temperature sensor and the humidity sensor are utilized to collect in real time and send signals to the control system, the degree of automation is high, and the operation process is more reliable and safer.
(2) The installation position of the heat pipe heat exchanger is adjustable, and the heat exchange efficiency in the heat pipe heat exchanger can be correspondingly adjusted according to the preset temperature, so that the heat exchange efficiency is greatly improved, the extra energy consumption is not increased, and the whole device is more energy-saving.
(3) Through adopting variable frequency formula forced draught blower and exhaust fan for whole device operation noise is low, can satisfy user's operation requirement, and the suitability is wider, has better popularization and application space.
Drawings
Fig. 1 is a schematic structural diagram of a heat pipe type machine room direct expansion energy-saving air conditioner assembly according to the present invention.
In the drawings, 1 is a heat pipe exchanger; 2 is an exhaust fan, 3 is a blower, 4 is a surface cooler, 5 is a machine room wall, and 6 is a temperature monitoring component.
Detailed Description
The following describes in detail a heat pipe type machine room direct expansion energy saving air conditioner assembly and a method for using the same in accordance with the present invention with reference to fig. 1.
The heat pipe type machine room direct expansion energy-saving air conditioner component comprises a heat pipe heat exchanger 1 arranged on a machine room wall 5, wherein one part of the heat pipe heat exchanger is arranged on an outer wall of the machine room, and the other part of the heat pipe heat exchanger is arranged on an inner wall of the machine room; the heat pipe heat exchanger arranged on the outer wall of the machine room is connected with the exhaust fan 2 through an exhaust pipe, and the heat pipe heat exchanger arranged on the inner wall of the machine room is connected with the blower 3 through a blast pipe; the blower is arranged in the machine room; the energy-saving air conditioner component comprises a surface cooler 4 and a control system, wherein the surface cooler is respectively connected with a blower and an air supply opening; the control system comprises a temperature monitoring component 6 and a controller which are arranged in the machine room; the temperature monitoring assembly monitors indoor temperature signals of the machine room in real time and sends the signals to the controller, and the controller controls the on-off of the exhaust fan, the surface cooler and the blower according to the indoor temperature signals of the machine room. The control system also comprises a humidity monitoring assembly and a humidifying dehumidifier which are arranged indoors, wherein the humidity monitoring assembly and the humidifying dehumidifier are both connected with the controller; the humidity monitoring assembly monitors indoor temperature signals of the machine room in real time and sends the signals to the controller, and the controller controls the on-off of the humidifying dehumidifier according to the indoor humidity signals. The control system also comprises a memory, a comparator and a timer, wherein the memory, the comparator and the timer are all connected with the controller, a temperature preset value is preset in the memory, the comparator compares the temperature signal value in the machine room monitored by the temperature monitoring component with the temperature preset value and sends a comparison result to the controller, and when the temperature preset value is smaller than the temperature signal value in the machine room, the controller controls the discharge machine, the surface cooler and the blower to be connected according to the comparison result; otherwise, the switch is disconnected; the timer module is internally provided with a time module in four seasons of spring, autumn and winter, and the controller controls the discharge and the disconnection of the air blower according to the time module in three seasons of spring, autumn and winter; the controller also controls the exhaust fan, the surface cooler and the air blower to be connected according to the summer time module. And air filters are arranged at the pipe orifices of the exhaust pipe and the blast pipe. The bottom of the heat pipe heat exchanger is provided with a moving component which can slide on the outer wall of the machine room, the moving component comprises a sliding rail and a telescopic rod which are arranged on the outer wall of the machine room, one end of the telescopic rod is fixedly connected with the outer wall of the machine room, and the other end of the telescopic rod is fixedly connected with the bottom of the heat pipe heat exchanger; the telescopic rod is an electric telescopic rod, a pneumatic telescopic rod or a hydraulic telescopic rod; the exhaust fan and the blower are respectively a variable-frequency exhaust fan and a variable-frequency blower. The surface cooler is a fluorine system and is matched with a fluorine unit matched with the fluorine system outdoors.
The application method of the heat pipe type machine room direct expansion energy-saving air conditioner component is characterized by comprising the following steps of:
1) Starting the energy-saving air conditioner assembly, and enabling the temperature monitoring assembly to monitor indoor temperature signals of the machine room in real time and send the signals to the controller;
2) The controller controls the on-off of the exhaust fan, the surface cooler and the blower according to the indoor temperature signal of the machine room; meanwhile, the controller also judges the current season, and when the current season is three seasons of spring, autumn and winter, the surface cooler is controlled to be in a disconnected state; when the temperature in the machine room is higher than the preset temperature in summer, the controller controls the surface cooler to be in a connected state for indoor cooling; when the temperature in the machine room is lower than the preset temperature, the controller controls the surface air cooler to be in a disconnected state; through the judgment, the temperature in the machine room is ensured to be kept at a preset temperature value.
Through multiple tests and measurements, the heat pipe type machine room direct expansion energy-saving air conditioner component has remarkable energy-saving effect when in practical application, and can effectively reduce 20% -30% of electric energy compared with common air conditioner equipment, thereby being more beneficial to environmental protection; meanwhile, the production and maintenance cost is lower, the operation and the use are more convenient, and the method has better popularization and application space.
The previous description of the embodiments is provided to facilitate a person of ordinary skill in the art in order to make and use the present invention. It will be apparent to those skilled in the art that various modifications can be readily made to these embodiments and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the embodiments described herein, and those skilled in the art, based on the present disclosure, should make improvements and modifications without departing from the scope of the present invention.
Claims (3)
1. A heat pipe type machine room direct expansion energy-saving air conditioner component is characterized in that: the energy-saving air conditioner assembly comprises a heat pipe heat exchanger (1) arranged on a machine room wall body (5), wherein one part of the heat pipe heat exchanger is arranged on an outer wall body of the machine room, and the other part of the heat pipe heat exchanger is arranged on an inner wall body of the machine room; the heat pipe heat exchanger arranged on the outer wall of the machine room is connected with the exhaust fan (2) through an exhaust pipe, and the heat pipe heat exchanger arranged on the inner wall of the machine room is connected with the air feeder (3) through an air supply pipe; the blower is arranged in the machine room; the energy-saving air conditioner component comprises a surface cooler and a control system, wherein the surface cooler (4) is respectively connected with a blower and an air supply opening; the control system comprises a temperature monitoring component (6) and a controller, wherein the temperature monitoring component is arranged in the machine room; the temperature monitoring component monitors indoor temperature signals of the machine room in real time and sends the signals to the controller, and the controller controls the on-off of the exhaust fan, the surface cooler and the blower according to the indoor temperature signals of the machine room;
the control system also comprises a humidity monitoring assembly and a humidifying dehumidifier which are arranged indoors, wherein the humidity monitoring assembly and the humidifying dehumidifier are both connected with the controller; the humidity monitoring component monitors indoor temperature signals of the machine room in real time and sends the signals to the controller, and the controller controls the on-off of the humidifying and dehumidifying device according to the indoor humidity signals;
the control system also comprises a memory, a comparator and a timer, wherein the memory, the comparator and the timer are all connected with the controller, a temperature preset value is preset in the memory, the comparator compares the temperature signal value in the machine room monitored by the temperature monitoring component with the temperature preset value and sends a comparison result to the controller, and when the temperature preset value is smaller than the temperature signal value in the machine room, the controller controls the discharge machine, the surface cooler and the blower to be connected according to the comparison result; otherwise, the switch is disconnected; the timer module is internally provided with a time module in four seasons of spring, autumn and winter, and the controller controls the discharge and the disconnection of the air blower according to the time module in three seasons of spring, autumn and winter; the controller also controls the exhaust fan, the surface cooler and the air blower to be connected according to the summer time module;
the bottom of the heat pipe heat exchanger is provided with a moving component which can slide on the outer wall of the machine room, the moving component comprises a sliding rail and a telescopic rod which are arranged on the outer wall of the machine room, one end of the telescopic rod is fixedly connected with the outer wall of the machine room, and the other end of the telescopic rod is fixedly connected with the bottom of the heat pipe heat exchanger; the telescopic rod is an electric telescopic rod, a pneumatic telescopic rod or a hydraulic telescopic rod; the exhaust fan and the blower are respectively a variable-frequency exhaust fan and a variable-frequency blower; the installation position of the heat pipe heat exchanger can be adjusted, and the heat exchange efficiency in the heat pipe heat exchanger can be correspondingly adjusted according to the preset temperature, so that the heat exchange efficiency is greatly improved, no extra energy consumption is added, and the whole device is more energy-saving;
the application method of the heat pipe type machine room direct expansion energy-saving air conditioner component comprises the following steps of:
1) Starting the energy-saving air conditioner assembly, and enabling the temperature monitoring assembly to monitor indoor temperature signals of the machine room in real time and send the signals to the controller;
2) The controller controls the on-off of the exhaust fan, the surface cooler and the blower according to the indoor temperature signal of the machine room; meanwhile, the controller also judges the current season, and when the current season is three seasons of spring, autumn and winter, the surface cooler is controlled to be in a disconnected state; when the temperature in the machine room is higher than the preset temperature in summer, the controller controls the surface cooler to be in a connected state for indoor cooling; when the temperature in the machine room is lower than the preset temperature, the controller controls the surface air cooler to be in a disconnected state; through the judgment, the temperature in the machine room is ensured to be kept at a preset temperature value.
2. The heat pipe type machine room direct expansion energy saving air conditioning assembly according to claim 1, wherein: and air filters are arranged at the pipe orifices of the exhaust pipe and the blast pipe.
3. The heat pipe type machine room direct expansion energy saving air conditioning assembly according to claim 1, wherein: the surface cooler is a fluorine system and is matched with a fluorine unit matched with the fluorine system outdoors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611093081.XA CN108286758B (en) | 2016-12-01 | 2016-12-01 | Heat pipe type machine room direct expansion energy-saving air conditioner assembly and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611093081.XA CN108286758B (en) | 2016-12-01 | 2016-12-01 | Heat pipe type machine room direct expansion energy-saving air conditioner assembly and use method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108286758A CN108286758A (en) | 2018-07-17 |
| CN108286758B true CN108286758B (en) | 2023-08-18 |
Family
ID=62817148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611093081.XA Active CN108286758B (en) | 2016-12-01 | 2016-12-01 | Heat pipe type machine room direct expansion energy-saving air conditioner assembly and use method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108286758B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008203211A (en) * | 2007-02-22 | 2008-09-04 | Espec Corp | Thermostatic and humidistatic device |
| CN102355807A (en) * | 2011-07-29 | 2012-02-15 | 上海威特力热管散热器有限公司 | Heat pipe heat exchange system and heat exchange method thereof for communication data machine room |
| CN102425828A (en) * | 2011-09-15 | 2012-04-25 | 上海交通大学 | Energy saving device suitable for accurate control air conditioner in machine room |
| CN104235975A (en) * | 2013-06-24 | 2014-12-24 | 江苏香江科技股份有限公司 | Heat exchange system of heat pipe of communication base station |
| CN105423472A (en) * | 2016-01-11 | 2016-03-23 | 中国航天空气动力技术研究院 | Heat pipe type air conditioner system for data center and heat dissipating method of heat pipe type air conditioner system |
| CN206257766U (en) * | 2016-12-01 | 2017-06-16 | 内蒙古创达热管节能设备有限公司 | A kind of heat pipe-type computer room direct-expansion type energy-saving type air conditioner component |
-
2016
- 2016-12-01 CN CN201611093081.XA patent/CN108286758B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008203211A (en) * | 2007-02-22 | 2008-09-04 | Espec Corp | Thermostatic and humidistatic device |
| CN102355807A (en) * | 2011-07-29 | 2012-02-15 | 上海威特力热管散热器有限公司 | Heat pipe heat exchange system and heat exchange method thereof for communication data machine room |
| CN102425828A (en) * | 2011-09-15 | 2012-04-25 | 上海交通大学 | Energy saving device suitable for accurate control air conditioner in machine room |
| CN104235975A (en) * | 2013-06-24 | 2014-12-24 | 江苏香江科技股份有限公司 | Heat exchange system of heat pipe of communication base station |
| CN105423472A (en) * | 2016-01-11 | 2016-03-23 | 中国航天空气动力技术研究院 | Heat pipe type air conditioner system for data center and heat dissipating method of heat pipe type air conditioner system |
| CN206257766U (en) * | 2016-12-01 | 2017-06-16 | 内蒙古创达热管节能设备有限公司 | A kind of heat pipe-type computer room direct-expansion type energy-saving type air conditioner component |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108286758A (en) | 2018-07-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106678991B (en) | Fresh air handling unit regulation and control system suitable for radiation air conditioner and control method thereof | |
| CN203837202U (en) | Energy-efficient air conditioner system | |
| CN203837109U (en) | Integrated and combined type machine room air conditioner unit | |
| CN103574858A (en) | Outdoor return air preprocessing method of central air-conditioning system | |
| CN204214094U (en) | Energy-saving running environment intelligent controlling device | |
| CN204611974U (en) | Degree of depth dehumidifying VMC | |
| CN103900189B (en) | The refrigeration control method of a kind of machine room, Apparatus and system | |
| CN103644627A (en) | Water-cooling machine room dew point self-optimizing control device and method | |
| CN202885154U (en) | Intelligent ventilation energy-saving device | |
| CN208042334U (en) | The energy-saving unitary air handling unit of independent temperature-humidity control | |
| CN111271826B (en) | Fan coil control method based on Internet of things | |
| CN113405198A (en) | Proportion-adjustable secondary return air conditioning system with reheater | |
| CN203704192U (en) | Air conditioning water system of hospital building | |
| CN202973431U (en) | Automatic monitoring system between internal unit and external unit of air conditioner for communication machine room | |
| CN108966606A (en) | Low noise computer room air energy energy saver | |
| CN205227682U (en) | SVC valves room temperature degree regulation and control system | |
| CN108286758B (en) | Heat pipe type machine room direct expansion energy-saving air conditioner assembly and use method thereof | |
| CN205026872U (en) | Environment -friendly energy -saving central air conditioner | |
| CN206257766U (en) | A kind of heat pipe-type computer room direct-expansion type energy-saving type air conditioner component | |
| CN103629788A (en) | Fresh air energy-saving system for base station room | |
| CN206669971U (en) | A kind of double low-temperature receiver dehumidifying units | |
| CN203432017U (en) | Pollution-free natural wind environment-friendly air-conditioning system | |
| CN106556100A (en) | A kind of central air-conditioning of environmental protection and energy saving | |
| CN2562116Y (en) | Automatic control thermostatic air exchanging devices | |
| CN202792398U (en) | Base station machine room fresh air energy saving system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |