CN206257781U - A kind of laboratory multistage ventilated energy-saving control system - Google Patents
A kind of laboratory multistage ventilated energy-saving control system Download PDFInfo
- Publication number
- CN206257781U CN206257781U CN201621078415.1U CN201621078415U CN206257781U CN 206257781 U CN206257781 U CN 206257781U CN 201621078415 U CN201621078415 U CN 201621078415U CN 206257781 U CN206257781 U CN 206257781U
- Authority
- CN
- China
- Prior art keywords
- air
- control
- valve
- fan
- frequency
- Prior art date
Links
- 239000003570 air Substances 0.000 claims abstract description 100
- 238000006243 chemical reactions Methods 0.000 claims abstract description 43
- 238000009423 ventilation Methods 0.000 claims abstract description 14
- 239000000203 mixtures Substances 0.000 claims description 8
- 239000007789 gases Substances 0.000 claims description 7
- 238000000034 methods Methods 0.000 claims description 6
- 230000003068 static Effects 0.000 claims description 6
- 239000011901 water Substances 0.000 claims description 6
- 230000000875 corresponding Effects 0.000 claims description 5
- 230000002265 prevention Effects 0.000 claims description 3
- 238000004134 energy conservation Methods 0.000 abstract description 4
- 238000010586 diagrams Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000001276 controlling effects Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering processes Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
Description
Technical field
The utility model is related to laboratory ventilation equipment technical field, and in particular to a kind of laboratory multistage ventilated energy-saving control System processed.
Background technology
The ventilation in laboratory plays vital to the environmental quality in laboratory and the health of laboratory operation personnel Effect, in order to prevent the polluter produced in experiment from being spread in laboratory, all kinds of laboratories are provided with ventilating system, but It is or that existing ventilating system does not have Boiler pressure control function, as long as there is a vent cabinet to open in system using, air draft electricity Machine is unfavorable for energy-conservation with regard to running at full capacity.
Utility model content
The application provides a kind of according to the actual air quantity intelligent frequency-conversion air-supply in laboratory, realizes that the laboratory multistage of energy-conservation leads to Wind energy-saving control system, its technical scheme is as follows：
A kind of laboratory multistage ventilated energy-saving control system, including frequency conversion fan, collection raising middle flask and with it is described collection raising middle flask be connected Multiple vent cabinets, the frequency conversion fan to collection raising middle flask connection gas circuit for ventilation be responsible for, it is described collection raising middle flask to vent cabinet company Gas circuit is connect for branch vent, the branch vent is provided with air-valve, the vent cabinet is connected with face wind speed monitoring and control system, The face wind speed monitoring and control system include the face air velocity transducer being installed in each vent cabinet and electrically connect the face wind The wind volume varying controller of fast sensor, the wind volume varying controller electrically connects frequency conversion fan, and the wind volume varying controller is surveyed in real time Amount vent cabinet aperture, while the real-time measuring surface wind speed of face air velocity transducer, and converts it into voltage signal and is transmitted to variable air rate control Device processed, wind volume varying controller is compared according to face wind speed actual value with setting value, if face wind speed is not in range of set value, To frequency conversion fan output control signal, the frequency conversion fan receives control signal regulation ventilation volume to wind volume varying controller.
Preferably, the collection raising middle flask is arranged on the geometric center position of all vent cabinets in system, on the collection raising middle flask Pressure sensor is provided with, the pressure sensor electrically connects wind volume varying controller.
Preferably, the air-valve set on the branch vent includes Electric air valve and hand_pneumatic valve.
Preferably, the frequency conversion fan includes blower fan, frequency converter, PLC, the blower fan, frequency converter, PLC are sequentially connected, The PLC communications connection wind volume varying controller, the PLC sends control signal and realizes blower fan by internal processes setting Multistage speed control.
Preferably, the frequency converter includes power supply terminal R, S, T and speed control terminal RH, RM, RL, the feeder ear U, V, W power supply terminal of the corresponding sequentially connecting fan of sub- R, S, T, the PLC send control signal Y2 by inner setting program, Frequency converter speed control terminal RH, RM, RL and combination are controlled respectively, realize eight sections of speed controls of frequency conversion fan.
Preferably, also including clean area ventilated control system, clean zone control system is by touch-screen, controller, input Output module, sensor, frequency converter composition, independent frequency converter is set per Fans, and control system realizes following control function：
1), temperature control, difference and its polarity after being compared with set temperature value according to return air temperature, by controller PID arithmetic, adjusts the aperture or heater gear of surface cooler inlet valve, the temperature of controlled environment is maintained at the scope of requirement It is interior；
2), humid control, difference and its polarity after being compared with setting humidity value according to return air humidity, by controller PID arithmetic, regulation humidification valve opening makes the humidity of controlled environment be maintained in the range of requirement；
3), energy-saving run, including following state：
(a), auto state：Detection is new, air return humiture, by the enthalpy computing of controller, according to new, return air enthalpy machine Hot humidity load, automatically adjusts the aperture ratio of new air-valve, air returning valve and exhaust valve, makes energy-saving operation of air conditioner；
(b), manual mode：Toilet's pressure fan running frequency adjusts frequency conversion with the quantity of each room air-supply valve opening The upper limit running frequency of device, exhaust system adjusts exhaust blower frequency converter running frequency using CPC control；
4), CPC control, to malleation toilet, detection backwind tube static pressure with set the difference after static pressure compares and Its polarity, by the PID arithmetic of controller, on the one hand adjusts the frequency converter output frequency of exhaust blower, on the other hand adjusts new valve The aperture of door, makes system resh air requirement, return air amount and exhaust air rate maintain dynamic equilibrium, it is ensured that whole system malleation；
5), interlocked control, including：
(a), fresh air valve, return air valve, valve for air exhaust, heater, humidifier valve, air exhauster, fire protection linkage control dress Put and interlocked with clean system pressure fan；
B (), boot program, the preferential air returning valve of new air-valve is opened, the preferential exhaust blower of pressure fan is opened, and new air-valve is preferentially blown Machine is opened；Valve blow prior to return air valve opening in each laboratory；
C (), shutdown procedure, the preferential pressure fan of exhaust blower of clean system is closed, it is ensured that whole system malleation；When all wind When valve is closed, blower fan is automatically stopped operation；
Clean system pressure fan is forbidden to close when (), exhaust blower are in running status d；When in fire fighting state, fire-fighting Center is simultaneously emitted by alarm signal and shuts down linkage signal, and all blower fans in clean area stop automatically after control system time delay 3 minutes Only run；
E (), when air velocity transducer, to detect the minimum supply air rate that real-time wind speed maintained less than system shape on duty corresponding During wind speed, heater is forbidden to start；When high temperature shutoff is acted, heater is stopped；
6), room Isobarically Control, to malleation toilet, room differential pressure pickup detects the real-time pressure difference in room less than setting Value, when, the automatic aperture for reducing return air valve, when return air valve is in minimum aperture, room pressure difference is still not up to setting value, Then it is automatically increased pressure fan rotating speed.
Preferably, the touch-screen realizes following functions：
1), control device can independent control each air-valve, water valve and the running status per Fans, manually adjustable frequency conversion Device running frequency, may be set to working condition and state on duty, four kinds of operating modes of daytime and night；
2), the temperature of initialization system, humidity, blast, valve area, fan operation frequency parameter；
3), the humiture in monitoring fresh air, return air, air-supply and each room, each air-valve, the aperture of water valve, blower fan is manually, automatically Running status, ajutage wind speed, fan operation frequency, the real-time pressure difference in room, exhaust system for ventilation cabinets working condition, fire-fighting shape State；
4), the alarm of blower fan thermal overload, frequency converter overload warning, plugged filter alarm, low-temperature warning, heater high-temperature report Alert, room pressure difference alarm, fire fighting state alarm, fire prevention valve events alarm；
5) manual, automatic, timing plurality of operating modes, is realized per Fans, power frequency switches with frequency conversion, works as frequency converter failure When, can be switched to power frequency operation.
According to above-mentioned technical proposal, the utility model is responsible for the collection raising middle flask of setting by divulging information and is installed in collection raising middle flask Pressure sensor, atmospheric pressure value in real-time monitoring collection raising middle flask simultaneously controls frequency conversion fan to carry out frequency conversion to take out by wind volume varying controller Air draft is adjusted, it is ensured that collection raising middle flask atmospheric pressure value is constant and realizes energy-saving effect, and each vent cabinet is provided with face air velocity transducer, in real time inspection The face wind speed of vent cabinet is surveyed, it is real by controlling each vent cabinet air draft air force in the presence of wind volume varying controller and air-valve The air draft on demand of existing each vent cabinet.
Brief description of the drawings
The utility model is described in further detail below by specific embodiment combination accompanying drawing.
Fig. 1 is overall structure diagram of the present utility model；
Fig. 2 is the electric hookup of frequency conversion fan in the utility model；
Fig. 3 is each terminal schematic diagram of the PLC in the utility model frequency conversion fan；
Fig. 4 is each terminal schematic diagram of the frequency converter in the utility model frequency conversion fan；
Fig. 5 is the terminal inner logic relation picture of PLC and frequency converter in the utility model frequency conversion fan.
Wherein, 1, frequency conversion fan；11st, blower fan；12nd, frequency converter；13、PLC；2nd, raising middle flask is collected；21st, pressure sensor；3rd, lead to Wind cabinet；4th, ventilation supervisor；5th, branch vent；6th, air-valve；61st, Electric air valve；62nd, hand_pneumatic valve；7th, the monitoring of face wind speed and control System；71st, face air velocity transducer；72nd, wind volume varying controller.
Specific embodiment
The utility model is described in further detail below by specific embodiment combination accompanying drawing.
As shown in figure 1, a kind of laboratory multistage ventilated energy-saving control system, including frequency conversion fan 1, collection raising middle flask 2 and with institute Multiple vent cabinets 3 of the collection connection of raising middle flask 2 are stated, the connection gas circuit of the frequency conversion fan 1 to collection raising middle flask 2 is ventilation supervisor 4, the collection The connection gas circuit of raising middle flask 2 to vent cabinet 3 is branch vent 5, and the branch vent 5 is provided with air-valve 6, and the vent cabinet 3 is connected There are face wind speed monitoring and control system 7, the face wind speed monitoring and control system 7 include the face being installed in each vent cabinet 3 The wind volume varying controller 72 of air velocity transducer 71 and the electrical connection face air velocity transducer 71, the wind volume varying controller 72 is electrically connected Frequency conversion fan 1 is connect, the wind volume varying controller 72 measures the aperture of vent cabinet 3 in real time, while face air velocity transducer 71 is measured in real time Face wind speed, and convert it into voltage signal and be transmitted to wind volume varying controller 72, wind volume varying controller 72 is according to face wind speed actual value It is compared with setting value, if face wind speed is not in range of set value, wind volume varying controller 72 is to the output control of frequency conversion fan 1 Signal, the frequency conversion fan 1 receives control signal regulation ventilation volume.Must when often opening or closing the air-valve 6 of certain vent cabinet 3 Difference after causing the change of air pressure in collection raising middle flask 2, atmospheric pressure value in real-time detection collection raising middle flask 2 to be compared with the atmospheric pressure value for setting and Its polarity, by the PID arithmetic of wind volume varying controller 72, sends the output frequency that control signal adjusts frequency conversion fan 1, realizes section Can operation.
As shown in figure 1, preferably, the collection raising middle flask 2 is arranged on the geometric center position of all vent cabinets 3 in system, The collection raising middle flask 2 is provided with pressure sensor 21, the electrical connection wind volume varying controller 72 of the pressure sensor 21.The frequency conversion wind Air pressure value changes accordingly adjust pump drainage wind air quantity in the collection raising middle flask 2 that machine 1 is detected according to pressure sensor 21, maintain the collection phase of raising middle flask 2 Negative pressure state for vent cabinet 3 simultaneously keeps collecting the stable gas pressure of raising middle flask 2, while so that the pressure difference of collection raising middle flask 2 and each vent cabinet 3 It is smaller, air draft noise can be reduced.
Preferably, the air-valve 6 set on the branch vent 5 includes Electric air valve 61 and hand_pneumatic valve 62.By setting The face air speed data of the detection of face air velocity transducer 71 in each vent cabinet 3 is put, wind volume varying controller 72 is according to laboratory reality Border demand exhaust air rate, the exhaust air rate air force of vent cabinet 3 is realized by controlling the opening angle of Electric air valve 61, realizes that each leads to The air draft on demand of wind cabinet 3, reaches energy conservation and consumption reduction effects, branch vent 5 when wherein hand_pneumatic valve 62 is for system installation and debugging The operation of tune equal air quantity.
As shown in Figure 2, Figure 3, Figure 4, preferably, the frequency conversion fan 1 includes blower fan 11, frequency converter 12, PLC13, institute State blower fan 11, frequency converter 12, PLC13 sequentially to connect, the PLC13 communications connection wind volume varying controller 72, the PLC13 Set by internal processes and send the multistage speed control that control signal realizes frequency conversion fan 1.
As shown in figure 5, preferably, the frequency converter 12 include power supply terminal R, S, T and speed control terminal RH, RM, U, V, W power supply terminal of the corresponding sequentially connecting fan 11 of RL, described power supply terminal R, S, T, the PLC13 pass through inner setting journey Sequence sends control signal Y2, and speed control terminal RH, RM, the RL of frequency converter 12 and combination, realize blower fan 11 eight sections are controlled respectively Speed control.Wherein the eight of Y2 sections fast frequency Pr.1-Pr.8 can set eight reasonable frequencies according to actual conditions, such as Pr.1=0, Pr.2=5, Pr.3=10, Pr.4=20, Pr.5=30, Pr.6=40, Pr.7=50, Pr.8=60;Except the control of eight sections of speed Outward, being combined by the break-make of RH, RM, RL and frequency converter other terminals can also realize five sections of speed controls, 15 sections of speed control etc. VAV control.
Preferably, also including clean area ventilated control system, clean zone control system is by touch-screen, controller, input Output module, sensor, frequency converter composition, independent frequency converter is set per Fans, and control system realizes following control function：
1), temperature control, difference and its polarity after being compared with set temperature value according to return air temperature, by controller PID arithmetic, adjusts the aperture or heater gear of surface cooler inlet valve, the temperature of controlled environment is maintained at the scope of requirement It is interior；
2), humid control, difference and its polarity after being compared with setting humidity value according to return air humidity, by controller PID arithmetic, regulation humidification valve opening makes the humidity of controlled environment be maintained in the range of requirement；
3), energy-saving run, including following state：
(a), auto state：Detection is new, air return humiture, by the enthalpy computing of controller, according to new, return air enthalpy machine Hot humidity load, automatically adjusts the aperture ratio of new air-valve, air returning valve and exhaust valve, makes energy-saving operation of air conditioner；
(b), manual mode：Toilet's pressure fan running frequency adjusts frequency conversion with the quantity of each room air-supply valve opening The upper limit running frequency of device, exhaust system adjusts exhaust blower frequency converter running frequency using CPC control；
4), CPC control, to malleation toilet, detection backwind tube static pressure with set the difference after static pressure compares and Its polarity, by the PID arithmetic of controller, on the one hand adjusts the frequency converter output frequency of exhaust blower, on the other hand adjusts new valve The aperture of door, makes system resh air requirement, return air amount and exhaust air rate maintain dynamic equilibrium, it is ensured that whole system malleation；
5), interlocked control, including：
(a), fresh air valve, return air valve, valve for air exhaust, heater, humidifier valve, air exhauster, fire protection linkage control dress Put and interlocked with clean system pressure fan；
B (), boot program, the preferential air returning valve of new air-valve is opened, the preferential exhaust blower of pressure fan is opened, and new air-valve is preferentially blown Machine is opened；Valve blow prior to return air valve opening in each laboratory；
C (), shutdown procedure, the preferential pressure fan of exhaust blower of clean system is closed, it is ensured that whole system malleation；When all wind When valve is closed, blower fan is automatically stopped operation；
Clean system pressure fan is forbidden to close when (), exhaust blower are in running status d；When in fire fighting state, fire-fighting Center is simultaneously emitted by alarm signal and shuts down linkage signal, and all blower fans in clean area stop automatically after control system time delay 3 minutes Only run；
E (), when air velocity transducer, to detect the minimum supply air rate that real-time wind speed maintained less than system shape on duty corresponding During wind speed, heater is forbidden to start；When high temperature shutoff is acted, heater is stopped；
6), room Isobarically Control, to malleation toilet, room differential pressure pickup detects the real-time pressure difference in room less than setting Value, when, the automatic aperture for reducing return air valve, when return air valve is in minimum aperture, room pressure difference is still not up to setting value, Then it is automatically increased pressure fan rotating speed.
Preferably, the touch-screen realizes following functions：
1), control device can independent control each air-valve, water valve and the running status per Fans, manually adjustable frequency conversion Device running frequency, may be set to working condition and state on duty, four kinds of operating modes of daytime and night；
2), the temperature of initialization system, humidity, blast, valve area, fan operation frequency parameter；
3), the humiture in monitoring fresh air, return air, air-supply and each room, each air-valve, the aperture of water valve, blower fan is manually, automatically Running status, ajutage wind speed, fan operation frequency, the real-time pressure difference in room, exhaust system for ventilation cabinets working condition, fire-fighting shape State；
4), the alarm of blower fan thermal overload, frequency converter overload warning, plugged filter alarm, low-temperature warning, heater high-temperature report Alert, room pressure difference alarm, fire fighting state alarm, fire prevention valve events alarm；
5) manual, automatic, timing plurality of operating modes, is realized per Fans, power frequency switches with frequency conversion, works as frequency converter failure When, can be switched to power frequency operation.
Use above specific case is illustrated to the utility model, is only intended to help and understands the utility model, and It is not used to limit the utility model.For the utility model person of ordinary skill in the field, according to think of of the present utility model Think, some simple deductions, deformation can also be made or replaced.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621078415.1U CN206257781U (en) | 2016-09-26 | 2016-09-26 | A kind of laboratory multistage ventilated energy-saving control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621078415.1U CN206257781U (en) | 2016-09-26 | 2016-09-26 | A kind of laboratory multistage ventilated energy-saving control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206257781U true CN206257781U (en) | 2017-06-16 |
Family
ID=59022419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621078415.1U CN206257781U (en) | 2016-09-26 | 2016-09-26 | A kind of laboratory multistage ventilated energy-saving control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206257781U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107525212A (en) * | 2017-07-18 | 2017-12-29 | 广东芬尼克兹节能设备有限公司 | A kind of dehumidifier blast Zero magnitude control method and system |
| CN107678314A (en) * | 2017-10-16 | 2018-02-09 | 海宁欣源电子科技有限公司 | A kind of VAV control systems |
| CN108153212A (en) * | 2017-11-27 | 2018-06-12 | 安徽依诺格实验室设备有限公司 | A kind of laboratory environment intelligent monitoring system |
| CN108195048A (en) * | 2017-12-28 | 2018-06-22 | 复旦大学附属华山医院 | A kind of GMP laboratories clean air-conditioning system control method |
| CN108227604A (en) * | 2017-11-27 | 2018-06-29 | 安徽依诺格实验室设备有限公司 | A kind of intelligence laboratory environment monitoring method |
| CN109520572A (en) * | 2018-11-09 | 2019-03-26 | 珠海格力电器股份有限公司 | The initial open method of enthalpy difference chamber air circulation measuring device and its nozzle |
| CN110425683A (en) * | 2019-08-16 | 2019-11-08 | 苏州瑞达通机电科技有限公司 | Processing procedure emission control and static pressure transmission diversity weighting control method |
-
2016
- 2016-09-26 CN CN201621078415.1U patent/CN206257781U/en active IP Right Grant
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107525212A (en) * | 2017-07-18 | 2017-12-29 | 广东芬尼克兹节能设备有限公司 | A kind of dehumidifier blast Zero magnitude control method and system |
| CN107678314A (en) * | 2017-10-16 | 2018-02-09 | 海宁欣源电子科技有限公司 | A kind of VAV control systems |
| CN108153212A (en) * | 2017-11-27 | 2018-06-12 | 安徽依诺格实验室设备有限公司 | A kind of laboratory environment intelligent monitoring system |
| CN108227604A (en) * | 2017-11-27 | 2018-06-29 | 安徽依诺格实验室设备有限公司 | A kind of intelligence laboratory environment monitoring method |
| CN108195048A (en) * | 2017-12-28 | 2018-06-22 | 复旦大学附属华山医院 | A kind of GMP laboratories clean air-conditioning system control method |
| CN109520572A (en) * | 2018-11-09 | 2019-03-26 | 珠海格力电器股份有限公司 | The initial open method of enthalpy difference chamber air circulation measuring device and its nozzle |
| CN110425683A (en) * | 2019-08-16 | 2019-11-08 | 苏州瑞达通机电科技有限公司 | Processing procedure emission control and static pressure transmission diversity weighting control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103335363B (en) | Control device and the control method of air treatment system are concentrated in integration | |
| US7001263B2 (en) | Air flow monitoring and control system with reduced false alarms | |
| CN104633795B (en) | Energy-environment integrated machine for energy-efficient buildings | |
| CN202303663U (en) | Fresh air conditioner for computer room | |
| CN205279278U (en) | Intelligence purifying cabinet formula fresh air ventilator | |
| CN105066337A (en) | Multifunctional indoor air purification and detection system | |
| CN203323263U (en) | Central fresh air purifying and humidifying system | |
| CN102494390B (en) | Intelligent air adjusting system, air supply device and intelligent air adjusting method | |
| CN100523635C (en) | Intelligent cluster control system of central air-conditioning | |
| CN103644627B (en) | A kind of water-cooled room dew point self-optimizing control device and method | |
| CN101832612A (en) | Efficient automatic dust-removing and intelligent ventilation system and automatic dust-removing method | |
| KR101003258B1 (en) | Ventilation device with outdoor air cooling | |
| CN103574812A (en) | Straight ventilating machine room air-conditioning system and control method thereof | |
| CN203586433U (en) | Fresh air conveying and control system of central air conditioning | |
| CN203116224U (en) | Fresh air energy-saving control system for small machine room | |
| CN201935336U (en) | Temperature controller for radiant cooling and heating | |
| CN201368558Y (en) | Air supply control system for data equipment cabinet | |
| CN103335387A (en) | Central air conditioning system and air regulation device and method thereof | |
| CN103574858B (en) | A kind of central air conditioner system outdoor return preprocess method | |
| CN101896057B (en) | Bidirectional automatic dust removal and intelligent ventilation system and bidirectional dust removing method | |
| CN203010786U (en) | Integrated type machine room energy-saving air conditioner | |
| CN103900189B (en) | The refrigeration control method of a kind of machine room, Apparatus and system | |
| CN202134825U (en) | On-line intelligent monitoring system for monitoring internal environment of electrical cabinet | |
| CN104764166B (en) | A kind of method and its device for being used to emulate all-air air conditioning system | |
| CN201992768U (en) | Ventilation energy-saving device of household air-conditioner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200115 Address after: Room 827 and 829, building 10, 1258 Jinfeng South Road, Mudu Town, Wuzhong District, Suzhou City, Jiangsu Province Patentee after: Suzhou Mingliang Intelligent Technology Co., Ltd Address before: Mudu Wuzhong District Jin Feng Road Suzhou city Jiangsu province 215156 No. 1258 building 10 room 831 Patentee before: Celestica Suzhou Yihua electromechanical Co Ltd |
|
| TR01 | Transfer of patent right |