CN107525212A - A kind of dehumidifier blast Zero magnitude control method and system - Google Patents
A kind of dehumidifier blast Zero magnitude control method and system Download PDFInfo
- Publication number
- CN107525212A CN107525212A CN201710584013.1A CN201710584013A CN107525212A CN 107525212 A CN107525212 A CN 107525212A CN 201710584013 A CN201710584013 A CN 201710584013A CN 107525212 A CN107525212 A CN 107525212A
- Authority
- CN
- China
- Prior art keywords
- air
- blast
- valve
- setting
- value
- 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.)
- Granted
Links
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
Landscapes
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a kind of dehumidifier blast Zero magnitude control method and system, method includes：When in same engineering, same engineering coordinated signals pattern is performed；When in different engineerings, judge whether all blower fans use same rotational speed, if so, then performing same rotating speed control mode；Conversely, then perform FREQUENCY CONTROL pattern.System is included with Engineering Control unit and different Engineering Control units.The present invention can be by making actual air-out wind speed consistent with target air-out wind speed the control for mixing wind air-valve.Moreover, the present invention by the regulation to blower fan frequency, can also be such that blast zero point falls on an evaporator, make heat exchange more abundant, effectively improve dehumidification rate before and after different project installations, different rotation speed of fan and new air draft unlatching；So cause that wind speed is smaller at evaporator, allows condensed water to be not easy to be carried away by the wind, so as to fall on drip tray, is easy to focusing on for condensed water simultaneously.It the composite can be widely applied in dehumidifier.
Description
Technical field
The present invention relates to dehumidifier control technology field, more particularly to a kind of dehumidifier blast Zero magnitude control method and it is
System.
Background technology
The return air fan and breeze fan used in three traditional integrated formula dehumidifiers use is determined frequency blower fan and followed
Ring, can not realize and be precisely controlled for unit back blast zero point, its dehumidification rate is decreased, the method be primarily present with
Lower defect：
Under same rotation speed of fan, pressure drag caused by different project installation exterior line pressure drop differences will influence dehumidifier
Air-out wind speed, make actual air-out wind speed and target air-out wind speed inconsistent.
In same project installation, after new air draft air-valve is opened, windage changes in unit, and going out wind velocity will also occur
Change, make actual air-out wind speed and target air-out wind speed inconsistent.
Before and after different project installations, different rotation speed of fan and new air draft are opened, blast dead-center position all can inside unit
Change, if blast zero point can not fall on an evaporator, the reduction of unit dehumidification rate, energy consumption increase will be caused；
In summary, to ensure that the actual air-out wind speed of unit is consistent with target air-out wind speed under different engineerings or operating mode,
Unit dehumidification rate highest, then a kind of more intelligent blower fan and air-valve control mode are needed, realize that higher efficiency dehumidifies.
The content of the invention
In order to solve the above-mentioned technical problem, it is an object of the invention to provide one kind can make air-out wind speed consistent, and can improve
The dehumidifier blast Zero magnitude control method and system of dehumidification rate.
The technical solution used in the present invention is：
A kind of dehumidifier blast Zero magnitude control method, comprises the following steps：
When in same engineering, same engineering coordinated signals pattern is performed；
When in different engineerings, judge whether all blower fans use same rotational speed, mould is controlled with rotating speed if so, then performing
Formula；Conversely, then perform FREQUENCY CONTROL pattern.
As a kind of described dehumidifier blast Zero magnitude control further improvements in methods, the same engineering coordinated signals mould
Formula specifically includes：
According to the aperture demand of air draft air-valve and fresh air air-valve, the aperture of fresh air air-valve and air draft air-valve is adjusted；
The blast pressure difference exported at supply and exhaust is detected, when blast pressure difference ＞ target differential pressures value+setting return difference value, by mixed wind
The aperture increase of air-valve, until blast pressure difference is reduced to the target differential pressure value ± setting return difference value section of setting, then holding is current
Aperture；When blast pressure difference ＜ target differential pressures value+setting return difference, the aperture of mixed wind air-valve is reduced, until the increase of blast pressure difference
To the target differential pressure value ± setting return difference value section of setting, then current aperture is kept.
As a kind of described dehumidifier blast Zero magnitude control further improvements in methods, described same rotating speed control mode
Specifically include：
Dehumidifier blower fan is opened, and fresh air air-valve and air draft air-valve remain turned-off；
The blast pressure difference of return air inlet and air outlet is detected, will be mixed when blast pressure difference ＞ target differential pressures value+setting return difference value
The aperture increase of wind air-valve, until blast pressure difference is reduced to the target differential pressure value ± setting return difference value section of setting, then keeping ought
Preceding aperture；When blast pressure difference ＜ target differential pressures value+setting return difference, the aperture of mixed wind air-valve is reduced, until blast pressure difference increases
Target differential pressure value ± setting return difference value the section of setting is added to, then keeps current aperture.
As a kind of described dehumidifier blast Zero magnitude control further improvements in methods, described FREQUENCY CONTROL pattern tool
Body is：
The forefront pressure of evaporator and rear end pressure are detected, it is preferential to reduce return air if forefront pressure is more than rear end pressure
Blower fan frequency, increase breeze fan frequency if return air fan frequency can not reduce；If forefront pressure is less than rear end pressure, excellent
Return air fan frequency is first increased, reduces breeze fan frequency if return air fan frequency can not increase.
Another technical scheme of the present invention is：
A kind of dehumidifier blast Zero magnitude control system, including：
With Engineering Control unit, for when in same engineering, performing same engineering coordinated signals pattern；
Different Engineering Control units, for when in different engineerings, judging whether all blower fans use same rotational speed, if
It is then to perform same rotating speed control mode；Conversely, then perform FREQUENCY CONTROL pattern.
As a kind of further improvement of described dehumidifier blast Zero magnitude control system, the same Engineering Control unit bag
Include：
New exhaust valve adjustment unit, for the aperture demand according to air draft air-valve and fresh air air-valve, to fresh air air-valve and row
The aperture of wind air-valve is adjusted；
Blast detection unit, for detecting the blast pressure difference exported at supply and exhaust, when blast pressure difference ＞ target differential pressures value+set
When determining return difference value, the aperture of mixed wind air-valve is increased, until blast pressure difference is reduced to the target differential pressure value ± setting return difference of setting
It is worth section, then keeps current aperture；When blast pressure difference ＜ target differential pressures value+setting return difference, the aperture of mixed wind air-valve is reduced,
Until blast pressure difference increases to the target differential pressure value ± setting return difference value section of setting, then current aperture is kept.
As a kind of further improvement of described dehumidifier blast Zero magnitude control system, described same rotating speed control mode
Specifically include：
Air-blower control unit, opened for dehumidifier blower fan, fresh air air-valve and air draft air-valve remain turned-off；
Pressure differential detection unit, for detecting the blast pressure difference of return air inlet and air outlet, when blast pressure difference ＞ target differential pressures value+
When setting return difference value, the aperture of mixed wind air-valve is increased, the target differential pressure value ± setting that setting is reduced to until blast pressure difference is returned
Difference section, then keep current aperture；When blast pressure difference ＜ target differential pressures value+setting return difference, the aperture of mixed wind air-valve is subtracted
It is small, until blast pressure difference increases to the target differential pressure value ± setting return difference value section of setting, then keep current aperture.
As a kind of further improvement of described dehumidifier blast Zero magnitude control system, described FREQUENCY CONTROL pattern tool
Body is：
The forefront pressure of evaporator and rear end pressure are detected, it is preferential to reduce return air if forefront pressure is more than rear end pressure
Blower fan frequency, increase breeze fan frequency if return air fan frequency can not reduce；If forefront pressure is less than rear end pressure, excellent
Return air fan frequency is first increased, reduces breeze fan frequency if return air fan frequency can not increase.
The beneficial effects of the invention are as follows：
A kind of dehumidifier blast Zero magnitude control method and system of the present invention can be by making actually to go out to the control for mixing wind air-valve
Wind wind speed is consistent with target air-out wind speed.Moreover, the present invention can also be in different project installations, different rotation speed of fan and new air draft
Before and after unlatching, by the regulation to blower fan frequency, blast zero point is fallen on an evaporator, make heat exchange more abundant, effectively improve
Dehumidification rate；So cause that wind speed is smaller at evaporator, allows condensed water to be not easy to be carried away by the wind simultaneously, so as to fall on drip tray,
It is easy to focusing on for condensed water.
Brief description of the drawings
The embodiment of the present invention is described further below in conjunction with the accompanying drawings：
Fig. 1 is a kind of step flow chart of dehumidifier blast Zero magnitude control method of the present invention；
Fig. 2 is a kind of block diagram of dehumidifier blast Zero magnitude control system of the present invention.
Embodiment
With reference to figure 1, a kind of dehumidifier blast Zero magnitude control method of the present invention, comprise the following steps：
When in same engineering, same engineering coordinated signals pattern is performed；
When in different engineerings, judge whether all blower fans use same rotational speed, mould is controlled with rotating speed if so, then performing
Formula；Conversely, then perform FREQUENCY CONTROL pattern.
Preferred embodiment is further used as, the same engineering coordinated signals pattern specifically includes：
According to the aperture demand of air draft air-valve and fresh air air-valve, the aperture of fresh air air-valve and air draft air-valve is adjusted；
Using the blast pressure difference exported at wind pressure sensor detection supply and exhaust in the present embodiment, when blast pressure difference ＞ target pressures
During difference+setting return difference value, the aperture of mixed wind air-valve is increased, until blast pressure difference is reduced to the target differential pressure value of setting ± set
Determine return difference value section, then keep current aperture, meet air output demand；When blast pressure difference ＜ target differential pressures value+setting return difference,
The aperture of mixed wind air-valve is reduced, until blast pressure difference increases to the target differential pressure value ± setting return difference value section of setting, then protected
Current aperture is held, meets air output demand.
Preferred embodiment is further used as, described same rotating speed control mode specifically includes：
Dehumidifier blower fan is opened, and fresh air air-valve and air draft air-valve remain turned-off；
Using wind pressure sensor detection return air inlet and the blast pressure difference of air outlet in the present embodiment, when blast pressure difference ＞ targets
During pressure difference+setting return difference value, the aperture of mixed wind air-valve is increased, until blast pressure difference be reduced to the target differential pressure value of setting ±
Return difference value section is set, then keeps current aperture, meets air output demand；When blast pressure difference ＜ target differential pressures value+setting is returned
Difference, the aperture of mixed wind air-valve is reduced, until blast pressure difference increases to the target differential pressure value ± setting return difference value section of setting, then
Current aperture is kept, meets air output demand.
Preferred embodiment is further used as, described FREQUENCY CONTROL pattern is specially：
The forefront pressure of evaporator and rear end pressure are detected, it is preferential to reduce return air if forefront pressure is more than rear end pressure
Blower fan frequency, increase breeze fan frequency if return air fan frequency can not reduce；If forefront pressure is less than rear end pressure, excellent
Return air fan frequency is first increased, reduces breeze fan frequency if return air fan frequency can not increase.So by controlling return air
The frequency of blower fan and breeze fan, evaporator or so is fixed on to reach blast dead-center position inside unit, so as to be optimal
Dehumidification rate.
With reference to figure 2, a kind of dehumidifier blast Zero magnitude control system of the invention, including：
With Engineering Control unit, for when in same engineering, performing same engineering coordinated signals pattern；
Different Engineering Control units, for when in different engineerings, judging whether all blower fans use same rotational speed, if
It is then to perform same rotating speed control mode；Conversely, then perform FREQUENCY CONTROL pattern.
Preferred embodiment is further used as, the same Engineering Control unit includes：
New exhaust valve adjustment unit, for the aperture demand according to air draft air-valve and fresh air air-valve, to fresh air air-valve and row
The aperture of wind air-valve is adjusted；
Blast detection unit, for detecting the blast pressure difference exported at supply and exhaust, when blast pressure difference ＞ target differential pressures value+set
When determining return difference value, the aperture of mixed wind air-valve is increased, until blast pressure difference is reduced to the target differential pressure value ± setting return difference of setting
It is worth section, then keeps current aperture；When blast pressure difference ＜ target differential pressures value+setting return difference, the aperture of mixed wind air-valve is reduced,
Until blast pressure difference increases to the target differential pressure value ± setting return difference value section of setting, then current aperture is kept.
Preferred embodiment is further used as, described same rotating speed control mode specifically includes：
Air-blower control unit, opened for dehumidifier blower fan, fresh air air-valve and air draft air-valve remain turned-off；
Pressure differential detection unit, for detecting the blast pressure difference of return air inlet and air outlet, when blast pressure difference ＞ target differential pressures value+
When setting return difference value, the aperture of mixed wind air-valve is increased, the target differential pressure value ± setting that setting is reduced to until blast pressure difference is returned
Difference section, then keep current aperture；When blast pressure difference ＜ target differential pressures value+setting return difference, the aperture of mixed wind air-valve is subtracted
It is small, until blast pressure difference increases to the target differential pressure value ± setting return difference value section of setting, then keep current aperture.
Preferred embodiment is further used as, described FREQUENCY CONTROL pattern is specially：
The forefront pressure of evaporator and rear end pressure are detected, it is preferential to reduce return air if forefront pressure is more than rear end pressure
Blower fan frequency, increase breeze fan frequency if return air fan frequency can not reduce；If forefront pressure is less than rear end pressure, excellent
Return air fan frequency is first increased, reduces breeze fan frequency if return air fan frequency can not increase.
From the foregoing it can be that a kind of dehumidifier blast Zero magnitude control method and system of the present invention can be by mixing wind air-valve
Control make actual air-out wind speed consistent with target air-out wind speed.Moreover, the present invention can also be in different project installations, different blower fans
Before and after rotating speed and new air draft are opened, by the regulation to blower fan frequency, blast zero point is fallen on an evaporator, make heat exchange more
Fully, dehumidification rate is effectively improved；So cause that wind speed is smaller at evaporator, allows condensed water to be not easy to be carried away by the wind simultaneously, so as to
Fall on drip tray, be easy to focusing on for condensed water.
Above is the preferable implementation to the present invention is illustrated, but the invention is not limited to the implementation
Example, those skilled in the art can also make a variety of equivalent variations on the premise of without prejudice to spirit of the invention or replace
Change, these equivalent deformations or replacement are all contained in the application claim limited range.
Claims (8)
- A kind of 1. dehumidifier blast Zero magnitude control method, it is characterised in that comprise the following steps：When in same engineering, same engineering coordinated signals pattern is performed；When in different engineerings, judge whether all blower fans use same rotational speed, if so, then performing same rotating speed control mode； Conversely, then perform FREQUENCY CONTROL pattern.
- A kind of 2. dehumidifier blast Zero magnitude control method according to claim 1, it is characterised in that：The same engineering linkage Control model specifically includes：According to the aperture demand of air draft air-valve and fresh air air-valve, the aperture of fresh air air-valve and air draft air-valve is adjusted；The blast pressure difference exported at supply and exhaust is detected, when blast pressure difference ＞ target differential pressures value+setting return difference value, by mixed wind air-valve Aperture increase, until blast pressure difference is reduced to the target differential pressure value ± setting return difference value section of setting, then keeps current and open Degree；When blast pressure difference ＜ target differential pressures value+setting return difference, the aperture of mixed wind air-valve is reduced, set until blast pressure difference increases to Fixed target differential pressure value ± setting return difference value section, then keep current aperture.
- A kind of 3. dehumidifier blast Zero magnitude control method according to claim 1, it is characterised in that：Described same rotating speed control Molding formula specifically includes：Dehumidifier blower fan is opened, and fresh air air-valve and air draft air-valve remain turned-off；The blast pressure difference of return air inlet and air outlet is detected, when blast pressure difference ＞ target differential pressures value+setting return difference value, by mixed wind wind The aperture increase of valve, until blast pressure difference is reduced to the target differential pressure value ± setting return difference value section of setting, then keep current Aperture；When blast pressure difference ＜ target differential pressures value+setting return difference, the aperture of mixed wind air-valve is reduced, until blast pressure difference increases to Target differential pressure value ± setting return difference value the section of setting, then keep current aperture.
- A kind of 4. dehumidifier blast Zero magnitude control method according to claim 1, it is characterised in that：Described FREQUENCY CONTROL Pattern is specially：The forefront pressure of evaporator and rear end pressure are detected, it is preferential to reduce return air fan if forefront pressure is more than rear end pressure Frequency, increase breeze fan frequency if return air fan frequency can not reduce；It is preferential to add if forefront pressure is less than rear end pressure Big return air fan frequency, reduces breeze fan frequency if return air fan frequency can not increase.
- A kind of 5. dehumidifier blast Zero magnitude control system, it is characterised in that including：With Engineering Control unit, for when in same engineering, performing same engineering coordinated signals pattern；Different Engineering Control units, for when in different engineerings, judging whether all blower fans use same rotational speed, if so, Then perform same rotating speed control mode；Conversely, then perform FREQUENCY CONTROL pattern.
- A kind of 6. dehumidifier blast Zero magnitude control system according to claim 5, it is characterised in that：The same Engineering Control Unit includes：New exhaust valve adjustment unit, for the aperture demand according to air draft air-valve and fresh air air-valve, to fresh air air-valve and air draft wind The aperture of valve is adjusted；Blast detection unit, for detecting the blast pressure difference exported at supply and exhaust, when blast pressure difference ＞ target differential pressures value+setting is returned During difference, the aperture of mixed wind air-valve is increased, until blast pressure difference is reduced to the target differential pressure value ± setting return difference value area of setting Between, then keep current aperture；When blast pressure difference ＜ target differential pressures value+setting return difference, the aperture of mixed wind air-valve is reduced, until Blast pressure difference increases to the target differential pressure value ± setting return difference value section of setting, then keeps current aperture.
- A kind of 7. dehumidifier blast Zero magnitude control system according to claim 5, it is characterised in that：Described same rotating speed control Molding formula specifically includes：Air-blower control unit, opened for dehumidifier blower fan, fresh air air-valve and air draft air-valve remain turned-off；Pressure differential detection unit, for detecting the blast pressure difference of return air inlet and air outlet, when blast pressure difference ＞ target differential pressures value+setting During return difference value, the aperture of mixed wind air-valve is increased, until blast pressure difference is reduced to the target differential pressure value ± setting return difference value of setting Section, then keep current aperture；When blast pressure difference ＜ target differential pressures value+setting return difference, the aperture of mixed wind air-valve is reduced, directly Increase to the target differential pressure value ± setting return difference value section of setting to blast pressure difference, then keep current aperture.
- A kind of 8. dehumidifier blast Zero magnitude control system according to claim 5, it is characterised in that：Described FREQUENCY CONTROL Pattern is specially：The forefront pressure of evaporator and rear end pressure are detected, it is preferential to reduce return air fan if forefront pressure is more than rear end pressure Frequency, increase breeze fan frequency if return air fan frequency can not reduce；It is preferential to add if forefront pressure is less than rear end pressure Big return air fan frequency, reduces breeze fan frequency if return air fan frequency can not increase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710584013.1A CN107525212B (en) | 2017-07-18 | 2017-07-18 | Method and system for controlling wind pressure zero point of dehumidifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710584013.1A CN107525212B (en) | 2017-07-18 | 2017-07-18 | Method and system for controlling wind pressure zero point of dehumidifier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107525212A true CN107525212A (en) | 2017-12-29 |
| CN107525212B CN107525212B (en) | 2020-03-24 |
Family
ID=60748339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710584013.1A Active CN107525212B (en) | 2017-07-18 | 2017-07-18 | Method and system for controlling wind pressure zero point of dehumidifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107525212B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63173813A (en) * | 1987-01-13 | 1988-07-18 | Toyota Motor Corp | Two-cycle internal combustion engine |
| CN101806484A (en) * | 2010-04-06 | 2010-08-18 | 南京航空航天大学 | Variable air volume air-conditioner control system with variable frequency fan and digital air valve for adjusting tail end air volume and implementation method |
| CN102029203A (en) * | 2010-10-25 | 2011-04-27 | 广州市泛美实业有限公司 | Control system of laboratory variable air volume (VAV) fume hood |
| CN203550035U (en) * | 2013-08-30 | 2014-04-16 | 上海云懋空气处理设备有限公司 | Wind pressure automation balancing dehumidifier system |
| CN206257781U (en) * | 2016-09-26 | 2017-06-16 | 苏州天弘益华机电有限公司 | A kind of laboratory multistage ventilated energy-saving control system |
-
2017
- 2017-07-18 CN CN201710584013.1A patent/CN107525212B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63173813A (en) * | 1987-01-13 | 1988-07-18 | Toyota Motor Corp | Two-cycle internal combustion engine |
| CN101806484A (en) * | 2010-04-06 | 2010-08-18 | 南京航空航天大学 | Variable air volume air-conditioner control system with variable frequency fan and digital air valve for adjusting tail end air volume and implementation method |
| CN102029203A (en) * | 2010-10-25 | 2011-04-27 | 广州市泛美实业有限公司 | Control system of laboratory variable air volume (VAV) fume hood |
| CN203550035U (en) * | 2013-08-30 | 2014-04-16 | 上海云懋空气处理设备有限公司 | Wind pressure automation balancing dehumidifier system |
| CN206257781U (en) * | 2016-09-26 | 2017-06-16 | 苏州天弘益华机电有限公司 | A kind of laboratory multistage ventilated energy-saving control system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107525212B (en) | 2020-03-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106679002B (en) | A kind of dehumidification by condensation and the compound Fresh air handing device and method of solution dehumidification | |
| CN106482573B (en) | A kind of blower fan of cooling tower Optimal Control System and method | |
| CN105571073B (en) | A kind of subway station air-conditioner water system frequency conversion control energy-saving method | |
| CN102003773A (en) | Shunt compensation control system of inverter-driven multi-split air conditioner | |
| CN204730411U (en) | Central air conditioning cooling water system energy-saving controller | |
| CN205156138U (en) | Special air conditioner of computer lab with condensate recovery function | |
| CN106568166A (en) | Anti-condensation control method and device for combined air conditioner and combined air conditioner | |
| CN203771958U (en) | Heat-pump agricultural product drying system with function of waste heat recovery | |
| CN110657500A (en) | Air conditioner with automatic humidifying function and control method | |
| CN212801014U (en) | Hot air balance control system of paper machine | |
| CN104197480B (en) | Follow-up type air conditioner ventilation control system and running method thereof | |
| CN110332648A (en) | A kind of control method of electric expansion valve, device and multi-gang air conditioner | |
| CN203550754U (en) | System for optimizing operation of cooling tower group | |
| CN111076277A (en) | Energy-saving system and method for accurately controlling fresh air temperature and humidity and air conditioner | |
| CN101893851A (en) | Indoor temperature fuzzy control system and method thereof | |
| CN206771574U (en) | The variable air volume air handling system system of function is corrected with sensor fault | |
| CN204115156U (en) | A kind of trailing type air conditioner ventilation control system | |
| CN106196422A (en) | The frostless control method of liquid desiccant air conditioning | |
| CN107525235B (en) | Zhongting and neighboring area air conditioning terminal intelligent control method | |
| CN107525212A (en) | A kind of dehumidifier blast Zero magnitude control method and system | |
| CN106765764B (en) | Air source heat pump heating machine and control method and device thereof | |
| CN110260431A (en) | Spinning and weaving workshop air conditioner system control method | |
| CN204593696U (en) | The air-conditioner set of automatic control system and evaporative cooling-mechanical refrigeration system compound | |
| CN210891933U (en) | Air conditioner with automatic humidification function | |
| CN206145848U (en) | Constant temperature and humidity system device suitable for precision casting environment |
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 |