CN201429165Y - Constant-temperature and constant-humidity fresh air energy-saving system - Google Patents

Constant-temperature and constant-humidity fresh air energy-saving system Download PDF

Info

Publication number
CN201429165Y
CN201429165Y CN2009201164249U CN200920116424U CN201429165Y CN 201429165 Y CN201429165 Y CN 201429165Y CN 2009201164249 U CN2009201164249 U CN 2009201164249U CN 200920116424 U CN200920116424 U CN 200920116424U CN 201429165 Y CN201429165 Y CN 201429165Y
Authority
CN
China
Prior art keywords
air
temperature
wind
humidity
new wind
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
Application number
CN2009201164249U
Other languages
Chinese (zh)
Inventor
章锡贤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HANGZHOU SUNLINES INFORMATION TECHNOLOGY Co Ltd
Original Assignee
HANGZHOU SUNLINES INFORMATION TECHNOLOGY Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by HANGZHOU SUNLINES INFORMATION TECHNOLOGY Co Ltd filed Critical HANGZHOU SUNLINES INFORMATION TECHNOLOGY Co Ltd
Priority to CN2009201164249U priority Critical patent/CN201429165Y/en
Application granted granted Critical
Publication of CN201429165Y publication Critical patent/CN201429165Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Air Conditioning Control Device (AREA)

Abstract

The utility model relates to a constant-temperature and constant-humidity fresh air energy-saving system which consists of a fresh air introduction and processing unit, an exhaust unit and a collection control unit. The system is designed against the characteristic that indoor devices of a communication room are multiple, so that the indoor temperature is increased constantly. The system can carryout automatic calculation, judgment and control according to outdoor, air supply and indoor temperature and humidity, timely introduce outdoor air, carry out comprehensive treatment of filtration, air mixing and isenthalpic humidification and temperature reduction on the introduced air, reduce the temperature of the room by the ventilation displacement technology, be automatically linked with anair conditioner for control and fully utilize a natural cold source, thereby meeting the environmental requirements of the room, simultaneously reducing the working time of the air conditioner of theroom to the maximum extent and achieving the purpose of saving energy consumption and prolonging the service life of the air conditioner.

Description

A kind of constant temperature and humidity fresh air energy-saving system
Technical field
The utility model relates to a kind of constant temperature and humidity fresh air energy-saving system, be meant a kind of communications equipment room constant temperature and humidity of keeping especially, and when satisfying the building environment requirement, make full use of natural cold resource, reduce the energy conserving system of the working time of air conditioner in machine room to greatest extent.
Background technology
In communications equipment room, owing to there is a large amount of electronic equipment long-term works, reasonably control the humiture of communications equipment room so that keep the normal operation of electronic equipment, air conditioner in machine room becomes the indispensable equipment of communications equipment room.But, in the air-conditioning system, there are main frame energy consumption, Cooling and Heat Source energy consumption, power aspect energy consumption, conveying aspect energy consumption, new exhaust system drainage system energy consumption etc., energy consumption is higher, causes the operating cost of air-conditioning high.And in most of area, transition season is very long, has long time outdoor air enthalpy to be lower than the room air enthalpy, thereby, utilize outdoor new wind to produce thus as the fresh air energy-saving system of low-temperature receiver.At present, utilizing outdoor new wind to greatest extent, satisfy the job requirement of machine room constant temperature and humidity, and effectively solve the harm of dust pollution to machine room, is problem demanding prompt solution during the air conditioner in machine room fresh air energy-saving system is used.
Summary of the invention
The purpose of this utility model is to provide a kind of constant temperature and humidity fresh air energy-saving system, this system can carry out automatic computing, judgement and control according to outdoor, air-supply, indoor temperature and humidity, introduce outdoor air in good time, and the air of introducing filtered, mixes wind, equal-enthalpy humidifying cooling integrated treatment, lower the temperature to machine room by the ventilation replacement technique, also can control with the air-conditioning automatically connect, make full use of natural cooling source, when satisfying the building environment requirement, reduced the working time of air conditioner in machine room to greatest extent, played energy efficient and prolong the air-conditioning purpose in service life.
For realizing the utility model purpose, intend by the following technical solutions:
A kind of constant temperature and humidity fresh air energy-saving system includes new wind at least and introduces processing unit, air exhaust units and collection control module.
New wind is introduced processing unit and is made up of new wind introducing air channel and new wind treatment box.Introduce the porch, air channel at new wind and be provided with stainless (steel) wire, the outlet end of introducing the air channel at new wind is provided with new wind treatment box.
New wind treatment box is made up of mixed wind Rose Box that is arranged at new wind treatment box top and the equal-enthalpy humidifying wind pushing box that is arranged at new wind treatment box bottom.At mixed return air inlet and the fresh wind port of having above the wind Rose Box, air returning valve is housed on return air inlet, be equipped with on the fresh wind port and connect the new air-valve that new wind is introduced the air channel, mix wind Rose Box middle part and be provided with primary efficient filter screen, primary efficient filter screen has high efficiency particulate air, for flexibly connecting, high efficiency particulate air and primary efficient filter screen left side are provided with pressure difference switch between primary efficient filter screen and the high efficiency particulate air, and the high efficiency particulate air bottom is provided with the air-supply Temperature Humidity Sensor.Centrifugal type draught fan is housed in the middle of the equal-enthalpy humidifying wind pushing box of hypomere; Equal-enthalpy humidifying device and cyclic water tank also are housed respectively in the centrifugal type draught fan both sides, and the equal-enthalpy humidifying device is delivered to equal-enthalpy humidifying device top by the water pump in the cyclic water tank with water, and equal-enthalpy humidifying device top is provided with water-locator.The cyclic water tank bottom is provided with sewage draining exit, is provided with ball valve before the sewage draining exit.Gap links to each other with sewage draining exit.Be provided with magnetic valve before the ball-cock assembly.Be provided with ball-cock assembly, high water level sensor, low water level sensor in the cyclic water tank, the water tank below is provided with water sensor.
Air exhaust units is made up of exhaust valve and wind output channel.Exhaust valve is arranged on the inlet end of wind output channel, is provided with stainless (steel) wire in the wind output channel exit.
Gather control module and be made up of acquisition system, master control borad, LCD LCD three parts, master control borad is connected with acquisition system, LCD LCD.Wherein acquisition system comprises indoor temperature and humidity sensor, outdoor temperature humidity sensor, air-supply Temperature Humidity Sensor, dust particle sensor; the data of being gathered comprise analog acquisition, switch acquisition and pulse width collection; wherein analog quantity comprises outdoor, indoor and the air-supply humiture collection; switching value comprises the collection of machine room fire alarm, the dirty stifled signal of filter, blower fan decompression signal, high water level signal, low water level signal, water logging signal and indoor high temperature protection signal, and pulse width is the collection to outdoor dust particle number.The master control borad control section comprises the control of new air-valve, air returning valve, exhaust valve, the control of centrifugal type draught fan, the control of air-conditioning interlock and water supply, humidification.
Compared with prior art, the utlity model has following technological progress:
1, constant temperature and humidity is controlled function automatically.The utility model is by the inside and outside humiture value of control system sensing chamber, calculate enthalpy, judge the whether available of outdoor air by enthalpy, when outdoor air default the zone in the time, new wind will be opened by system, and carry out respective handling, make wind pushing temperature in range of set value, thereby guarantee the requirement of machine room constant temperature and humidity.
2, cleanliness factor is controlled function automatically.In mixed wind Rose Box, be provided with primary efficient filter screen and high efficiency particulate air two-stage filter screen, can effectively filter the dust particle in the new wind, guarantee the cleanliness factor of air in the machine room.
3, prevent the mistake alarm function.At the outdoor dust particle sensor that is provided with, when outdoor 1 μ m particle (the typical particle of smog) concentration is undergone mutation, system judges to have sudden particle source, for avoiding the influence to fire-detecting system in the machine room, then closes VMC.
4, energy consumption is low and prolong service life of air-conditioning.By calculating to the outdoor air enthalpy, introduce outdoor air as low-temperature receiver in good time, adopt the ventilation replacement technique to lower the temperature, to satisfy calculator room equipment to environment requirement to machine room, reduce the working time of air conditioner in machine room simultaneously, play energy-conservation and prolong the air-conditioning purpose in service life.
Description of drawings
Fig. 1 is the utility model example structure schematic diagram.
Fig. 2 is the utility model embodiment left side TV structure schematic diagram.
Label among the figure is: the 1:LCD LCD; 2: master control borad; 3: pressure difference switch; 4: air returning valve; 5: new air-valve; 6: mix the wind Rose Box; 7: primary efficient filter screen; 8: high efficiency particulate air: 9: centrifugal type draught fan; 10: water-locator: 11: the equal-enthalpy humidifying device; 12: the equal-enthalpy humidifying wind pushing box; 13: water pump; 14: water sensor; 15: cyclic water tank; 16: ball valve 17: sewage draining exit; 18: ball-cock assembly; 19: low water level sensor; 20: magnetic valve; 21: gap; 22: high water level sensor; 23: the air-supply Temperature Humidity Sensor; 24: the outdoor temperature humidity sensor; 25: new wind is introduced the air channel; 26: the high temperature protection switch; 27: the dust particle sensor; 28: indoor temperature and humidity sensor; 29: wind output channel; 30: exhaust valve.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment utility model is further described:
The utility model constant temperature and humidity fresh air energy-saving system, at least include new wind and introduce processing unit, air exhaust units and collection control module, gather control module and link to each other with air exhaust units, introduce processing unit and air exhaust units work to control new wind as host computer system and new wind introducing processing unit.
New wind is introduced processing unit and is made up of new wind introducing air channel 25 and new wind treatment box.
Introduce 25 porch, air channel at new wind and be provided with stainless (steel) wire, enter to stop winged insect and bird.
New wind treatment box is made up of the mixed wind Rose Box 6 of epimere and the equal-enthalpy humidifying wind pushing box 12 of hypomere.
At mixed return air inlet and the fresh wind port of having above the wind Rose Box 6, air returning valve 4 is housed on return air inlet, be equipped with on the fresh wind port and connect the new air-valve 5 that new wind is introduced air channel 25, mix wind Rose Box 6 middle parts and be provided with primary efficient filter screen 7 and the high efficiency particulate air 8 that is easy to change, high efficiency particulate air 8 and primary efficient filter screen 7 left sides are provided with pressure difference switch 3, are used to detect the dirty stifled situation of primary efficient filter screen 7 and high efficiency particulate air 8.High efficiency particulate air 8 tops are provided with primary efficient filter screen 7, and high efficiency particulate air 8 bottoms are provided with air-supply Temperature Humidity Sensor 23, are used to detect wind pushing temperature, humidity.
In the middle of the equal-enthalpy humidifying wind pushing box 12 of new wind treatment box bottom centrifugal type draught fan 9 is housed, centrifugal type draught fan 9 air outlet mounting planes are from the horizontal by 30 ° of inclination angles, to reduce fan resistance.In centrifugal type draught fan 9 both sides equal-enthalpy humidifying device 11 and cyclic water tank 15 are housed respectively also.Equal-enthalpy humidifying device 11 adopts organic wet film and aluminum alloy material, has water imbibition, but can not be out of shape after the suction, is used for that air is entered machine room and carries out humidification before, guarantees that the machine room interior humidity can be not low excessively, and maximum humidification amount can reach 20.2kg/h.Equal-enthalpy humidifying device 11 is delivered to equal-enthalpy humidifying device 11 tops by the water pump in the cyclic water tank 15 13 with water, and equal-enthalpy humidifying device 11 tops are provided with water-locator 10.Cyclic water tank 15 bottoms are provided with sewage draining exit 17, are provided with ball valve 16 before the sewage draining exit 17.Gap 21 links to each other with sewage draining exit 17.Be provided with magnetic valve 20 before the ball-cock assembly 18.Be provided with ball-cock assembly 18 in the cyclic water tank 15, high water level sensor 22 is used to prevent that gap 21 spilling waters cause waste when water level is too high, and low water level sensor 19 is used to protect water pump 13, prevents from that water level from crossing to find time to cause that water pump 13 damages when low.Cyclic water tank 15 belows are provided with water sensor 14, are used for detecting the situation of leaking that whether exists.
Air exhaust units is made up of exhaust valve 30 and wind output channel 29, and exhaust valve 30 is arranged on the inlet end of wind output channel 29, is provided with stainless (steel) wire in wind output channel 29 exits, enters to stop winged insect and bird.
Gather control module and be made up of acquisition system, master control borad 2, LCD liquid crystal 1 display three parts, master control borad 2 is connected with acquisition system, LCD LCD 1.Wherein acquisition system comprises indoor temperature and humidity sensor 28, outdoor temperature humidity sensor 24, air-supply Temperature Humidity Sensor 23, dust particle sensor 27; the data of gathering comprise analog acquisition, switch acquisition and pulse width collection; wherein analog quantity comprises outdoor, indoor and the air-supply humiture collection; switching value comprises the collection of machine room fire alarm, the dirty stifled signal of filter, blower fan decompression signal, high water level signal, low water level signal, water logging signal and indoor high temperature protection signal, and pulse width is the collection to outdoor dust particle number.
Master control borad 2 control sections comprise the control of new air-valve 5, air returning valve 4, exhaust valve 30, the control of centrifugal type draught fan 9, the control of air-conditioning interlock and water supply, humidification.The control of air-conditioning interlock is provided with high temperature protection switch 26, when the outdoor air detection is not satisfied service condition, opens air-conditioning automatically.
As improvement of the present utility model, also be provided with RS485 (or RS232) Centralized Monitoring interface at the collection control module, system is carried out remote monitoring.

Claims (7)

1, a kind of constant temperature and humidity fresh air energy-saving system includes new wind at least and introduces processing unit, air exhaust units and collection control module, gathers control module and links to each other with new wind introducing processing unit, air exhaust units;
---described new wind is introduced processing unit and is made up of new wind introducing air channel (25) and new wind treatment box, new wind treatment box is arranged on the outlet end that new wind is introduced passage (25), and new wind treatment box wherein is made up of mixed wind Rose Box (6) that is arranged at new wind treatment box top and the equal-enthalpy humidifying wind pushing box (12) that is arranged at new wind treatment box bottom;
---described air exhaust units is made up of exhaust valve (30) and wind output channel (29), and wherein exhaust valve (30) is arranged on the inlet end of wind output channel (29);
---described collection control module is made up of acquisition system, master control borad (2), LCD LCD (1) three part, and wherein master control borad (2) is connected with acquisition system, LCD LCD (1).
2, a kind of constant temperature and humidity fresh air energy-saving system according to claim 1, it is characterized in that: be provided with air returning valve (4) and new air-valve (5) above the described mixed wind Rose Box, mix wind Rose Box (6) middle part and be provided with primary efficient filter screen (7), primary efficient filter screen has high efficiency particulate air (8), be flexible connection between primary efficient filter screen (7) and the high efficiency particulate air (8), high efficiency particulate air (8) and primary efficient filter screen (7) left side are provided with pressure difference switch (3), and high efficiency particulate air (8) bottom is provided with air-supply Temperature Humidity Sensor (23).
3, a kind of constant temperature and humidity fresh air energy-saving system according to claim 1 is characterized in that: centrifugal type draught fan (9) is housed in the middle of the described equal-enthalpy humidifying wind pushing box (12); In centrifugal type draught fan (9) both sides equal-enthalpy humidifying device (11) and cyclic water tank (15) are housed respectively also, equal-enthalpy humidifying device (11) is delivered to equal-enthalpy humidifying device (11) top by the water pump (13) in the cyclic water tank (15) with water, and equal-enthalpy humidifying device (11) top is provided with water-locator (10).
4, a kind of constant temperature and humidity fresh air energy-saving system according to claim 3, it is characterized in that: described cyclic water tank (15) bottom is provided with sewage draining exit (17), the preceding ball valve (16) that is provided with of sewage draining exit (17), gap (21) links to each other with sewage draining exit (17), the preceding magnetic valve (20) that is provided with of ball-cock assembly (18), be provided with ball-cock assembly (18), high water level sensor (22), low water level sensor (19) in the cyclic water tank (15), the water tank below is provided with water sensor (14).
5, a kind of constant temperature and humidity fresh air energy-saving system according to claim 1, it is characterized in that: described acquisition system comprises indoor temperature and humidity sensor (28), outdoor temperature humidity sensor (24), air-supply Temperature Humidity Sensor (23), dust particle sensor (27), and wherein indoor temperature and humidity sensor (28), outdoor temperature humidity sensor (24), air-supply Temperature Humidity Sensor (23), dust particle sensor (27) all are connected with master control borad (2).
6, a kind of constant temperature and humidity fresh air energy-saving system according to claim 1, it is characterized in that: described collection control module also is provided with high temperature protection switch (26).
7, a kind of constant temperature and humidity fresh air energy-saving system according to claim 1 is characterized in that: described collection control module also is provided with RS485 or RS232 Centralized Monitoring interface.
CN2009201164249U 2009-03-26 2009-03-26 Constant-temperature and constant-humidity fresh air energy-saving system Expired - Fee Related CN201429165Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009201164249U CN201429165Y (en) 2009-03-26 2009-03-26 Constant-temperature and constant-humidity fresh air energy-saving system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009201164249U CN201429165Y (en) 2009-03-26 2009-03-26 Constant-temperature and constant-humidity fresh air energy-saving system

Publications (1)

Publication Number Publication Date
CN201429165Y true CN201429165Y (en) 2010-03-24

Family

ID=42032904

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2009201164249U Expired - Fee Related CN201429165Y (en) 2009-03-26 2009-03-26 Constant-temperature and constant-humidity fresh air energy-saving system

Country Status (1)

Country Link
CN (1) CN201429165Y (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102748812A (en) * 2012-06-25 2012-10-24 华为技术有限公司 Machine room air conditioner
CN103574812A (en) * 2013-11-26 2014-02-12 广东申菱空调设备有限公司 Straight ventilating machine room air-conditioning system and control method thereof
CN106843107A (en) * 2017-01-24 2017-06-13 深圳企管加企业服务有限公司 Ventilation equipment Internet of Things monitoring method and system
CN107228428A (en) * 2017-07-17 2017-10-03 西安建筑科技大学 A kind of full air-conditioning system of family formula fresh air purifying
CN107543281A (en) * 2017-07-31 2018-01-05 广东美的暖通设备有限公司 Temperature and humidity regulation method, system and air conditioner
CN108534387A (en) * 2018-06-15 2018-09-14 珠海格力电器股份有限公司 Integral air conditioner constant temperature dehumidification refrigeration cycle system
CN108917080A (en) * 2018-05-16 2018-11-30 温州大学瓯江学院 Fresh air return air hybrid system
CN109210661A (en) * 2018-10-09 2019-01-15 睿仑空气处理技术东台有限公司 A kind of combined type multidimensional pipeline equal-enthalpy humidifying system
CN109489125A (en) * 2018-09-30 2019-03-19 珠海格力电器股份有限公司 Constant temperature and humidity air conditioner
CN110278698A (en) * 2019-07-24 2019-09-24 深圳市英维克科技股份有限公司 A kind of fresh air conditioner and Xingfeng capsule method
CN110748972A (en) * 2019-11-14 2020-02-04 珠海格力电器股份有限公司 Humidifying device, air conditioner and control method of air conditioner
CN116489978A (en) * 2023-06-25 2023-07-25 杭州电瓦特科技有限公司 Computer lab energy-saving optimization control system based on artificial intelligence

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102748812A (en) * 2012-06-25 2012-10-24 华为技术有限公司 Machine room air conditioner
CN102748812B (en) * 2012-06-25 2014-09-03 华为技术有限公司 Machine room air conditioner
CN103574812A (en) * 2013-11-26 2014-02-12 广东申菱空调设备有限公司 Straight ventilating machine room air-conditioning system and control method thereof
CN106843107A (en) * 2017-01-24 2017-06-13 深圳企管加企业服务有限公司 Ventilation equipment Internet of Things monitoring method and system
CN107228428A (en) * 2017-07-17 2017-10-03 西安建筑科技大学 A kind of full air-conditioning system of family formula fresh air purifying
CN107228428B (en) * 2017-07-17 2022-08-02 西安建筑科技大学 Household fresh air purification full air conditioning system
CN107543281B (en) * 2017-07-31 2020-04-17 广东美的暖通设备有限公司 Temperature and humidity regulation and control method and system and air conditioner
CN107543281A (en) * 2017-07-31 2018-01-05 广东美的暖通设备有限公司 Temperature and humidity regulation method, system and air conditioner
CN108917080A (en) * 2018-05-16 2018-11-30 温州大学瓯江学院 Fresh air return air hybrid system
CN108534387A (en) * 2018-06-15 2018-09-14 珠海格力电器股份有限公司 Integral air conditioner constant temperature dehumidification refrigeration cycle system
CN108534387B (en) * 2018-06-15 2023-11-03 珠海格力电器股份有限公司 Integral air conditioner constant temperature dehumidification refrigeration cycle system
CN109489125A (en) * 2018-09-30 2019-03-19 珠海格力电器股份有限公司 Constant temperature and humidity air conditioner
CN109210661A (en) * 2018-10-09 2019-01-15 睿仑空气处理技术东台有限公司 A kind of combined type multidimensional pipeline equal-enthalpy humidifying system
CN110278698A (en) * 2019-07-24 2019-09-24 深圳市英维克科技股份有限公司 A kind of fresh air conditioner and Xingfeng capsule method
CN110278698B (en) * 2019-07-24 2024-05-31 深圳市英维克科技股份有限公司 Fresh air conditioner and fresh air control method
CN110748972A (en) * 2019-11-14 2020-02-04 珠海格力电器股份有限公司 Humidifying device, air conditioner and control method of air conditioner
CN116489978A (en) * 2023-06-25 2023-07-25 杭州电瓦特科技有限公司 Computer lab energy-saving optimization control system based on artificial intelligence
CN116489978B (en) * 2023-06-25 2023-08-29 杭州电瓦特科技有限公司 Computer lab energy-saving optimization control system based on artificial intelligence

Similar Documents

Publication Publication Date Title
CN201429165Y (en) Constant-temperature and constant-humidity fresh air energy-saving system
CN202303663U (en) Fresh air conditioner for computer room
CN206257781U (en) A kind of laboratory multistage ventilated energy-saving control system
CN100523635C (en) Intelligent cluster control system of central air-conditioning
CN105202646A (en) Intelligent purification cabinet type fresh air ventilator
CN103673132B (en) Energy-saving storehouse environmental index regulation and control all-in-one
CN202171301U (en) Fresh air energy-saving system device in machine room
CN210512165U (en) Air source heat pump air heater
CN203980561U (en) A kind of machine room natural cooling source energy conserving system
CN208059181U (en) A kind of communications equipment room intelligent fresh air air-conditioning system
CN103900189B (en) The refrigeration control method of a kind of machine room, Apparatus and system
CN202709318U (en) Intelligent control system for indoor environment
CN101603723A (en) The clean prompting method of indoor machine filter screen of embedded type air conditioner
CN202885154U (en) Intelligent ventilation energy-saving device
CN202328607U (en) Intelligent broad-coverage high-efficient dustproof fresh air system
CN113124491A (en) Intelligent dehumidifying fresh air system
CN102829517A (en) Fresh air energy-saving system for small communication machine room
CN207365245U (en) A kind of indoor fresh air ventilating system
CN210624832U (en) Variable water temperature dehumidification fresh air ground radiation air conditioning system
CN104235972A (en) Intelligent energy-saving control system and method for fresh air volume of operating rooms
CN218972809U (en) Green low-carbon fresh air conditioner
CN201766801U (en) Bidirectional automatic dedusting intelligent ventilation system without exhaust fan
CN208687923U (en) Ventilating system based on pernicious gas detection
CN204176810U (en) A kind of operating room resh air requirement intelligent power saving regulator control system
CN208817646U (en) A kind of communication machine room intelligent fresh air air interchanger

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: 20100324

Termination date: 20150326

EXPY Termination of patent right or utility model