CN107339783A - Dual system air-conditioner control system - Google Patents
Dual system air-conditioner control system Download PDFInfo
- Publication number
- CN107339783A CN107339783A CN201710723801.4A CN201710723801A CN107339783A CN 107339783 A CN107339783 A CN 107339783A CN 201710723801 A CN201710723801 A CN 201710723801A CN 107339783 A CN107339783 A CN 107339783A
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- air
- conditioning
- temperature
- single system
- temperature sensor
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Abstract
The invention discloses a kind of dual system air-conditioner control system, include controller, operate display interface, detecting signal unit and electric execution unit, output end of the input of controller respectively with operation display interface and detecting signal unit is connected, the output end of controller and the input of electric execution unit connect, data communication is carried out between operation display interface and controller, detecting signal unit includes return air temperature sensor, coil temperature sensor, environment temperature sensor and warning circuit, electric execution unit includes evaporation fan, compressor A, condensation fan A, compressor B and condensation fan B.The present invention ensures that dual system work timesharing starts with intelligence, reliable control technology reduces startup power, single system the using and the reserved alternation, evaporator automatic defrosting when dual system works, meet the demand of cooled equipment or the very big temperature adjustment of space caloric value excursion.
Description
Technical field
The present invention relates to the control system field of special refrigeration plant, specifically a kind of dual system air-conditioner control system.
Background technology
With the development of modern technologies, special refrigeration plant is widely used, currently for cooled equipment or space
Caloric value excursion is big, or because of power supply finite capacity and to the conditional situation of air-conditioning equipment startup power, generally adopts
Freezed with conversion system.
Frequency conversion is that fixed mains frequency is changed to transformable frequency using frequency converter, compressor on startup, rotating speed
It is changed stepwise from slow to fast, reduces the impact to power supply, when temperature reaches near setting value, reduces the rotating speed of compressor
So as to reduce power and refrigerating capacity, temperature is set to maintain near setting value, its comfortableness, energy saving is preferable, and particularly direct current becomes
Frequency more power saving while AC frequency conversion advantage is had concurrently.
But in the market without powerful frequency-changeable compressor, and frequency conversion does not apply to cooled equipment or space hair yet
The very big occasion of thermal change scope, dual system air-conditioning cold flow, heat can zoom in or out one times, and air conditioner structure it is simple,
Parts are conventional, when reliability, Electro Magnetic Compatibility are good for sexual valence, in order to preferably make dual system air-conditioning more effectively work,
Reasonably, reliable control method is extremely important.
The content of the invention
The invention aims to make up prior art defect, there is provided a kind of dual system air-conditioner control system, with intelligence
, reliable control technology ensures that dual system work timesharing starts reduces startup power, single system the using and the reserved alternation, double
Evaporator automatic defrosting when system works, to meet the need of cooled equipment or the very big temperature adjustment of space caloric value excursion
Ask.
Technical scheme is as follows：
A kind of dual system air-conditioner control system, it is characterised in that：Include controller, operation display interface, detecting signal unit
And electric execution unit, the input of the controller output end with the operation display interface and detecting signal unit respectively
Connection, the output end of controller are connected with the input of the electric execution unit, described operation display interface and the control
Data communication is carried out between device processed, described detecting signal unit includes return air temperature sensor, coil temperature sensor, ring
Border temperature sensor and warning circuit, described electric execution unit include evaporation fan, compressor A, condensation fan A, pressure
Contracting machine B and condensation fan B.
Described dual system air-conditioner control system, it is characterised in that：Described return air temperature sensor detection air-conditioning evaporation
Device return air inlet temperature, described controller are set according to the return air temperature sensor detected value with the operation display interface
The difference automatic control air conditioner single system of target temperature or the start and stop and work of dual system；When return air inlet temperature and the target of setting
When temperature-difference is 2 DEG C, air-conditioning single system alternation, an air-conditioning single system uses, and another air-conditioning single system is standby, and one
Individual air-conditioning single system automatically switch extremely another air-conditioning single system work；When return air inlet temperature and the target temperature temperature difference of setting
For 4 DEG C when, air-conditioning dual system works, timesharing start, to reduce startup power.
Control method is as follows：
T：Return air inlet temperature, T0：Design temperature, T1：External environment temperature.
1. at T >=T0+2 DEG C, air-conditioning single system refrigeration, during T≤T0, stop refrigeration；
At T >=T0+4 DEG C, air-conditioning dual system refrigeration, during T ＜ T0+2 DEG C, air-conditioning single system refrigeration, during T≤T0, stop refrigeration；
2. at T≤T0-2 DEG C, the heating of air-conditioning single system, during T >=T0, stop heating；
At T≤T0-4 DEG C, the heating of air-conditioning dual system, during T ＞ T0-2 DEG C, the heating of air-conditioning single system, during T >=T0, stop heating；
3. other situations are ventilation.
Described dual system air-conditioner control system, it is characterised in that：Residing for described environment temperature sensor detection air-conditioning
Environment temperature, described coil temperature sensor detect air conditioning evaporator coil temperature, when the environment temperature residing for air-conditioning
In 5~27 DEG C of scopes and air-conditioning dual system refrigeration, A/C evaporator automatic defrosting, to improve low temperature environment air conditioner refrigerating effect
Rate.
Control method is as follows：When 5 DEG C≤T1≤27 DEG C and dual system are freezed, air-conditioning, which continuously works, enters sky after 90min
Single system refrigeration mode is adjusted, a compressor is stopped, resumed work after 5min, and single system is again introduced into after 45min
Refrigeration mode, another compressor are stopped, resumed work after 5min, circulate successively.
Evaporation fan shares in the electric execution unit, and compressor A and condensation fan A are one group, compressor B and condensation
Blower fan B is another group, and two systems are completely independent.The start and stop of each electric execution unit of the controller control, control method are as follows：
When air-conditioning single system works, evaporation fan, compressor A and condensation fan A work, compressor B and condensation fan B are dead electricity shape
State；Or evaporation fan, compressor B and condensation fan B work, compressor A and condensation fan A are power failure state；One air-conditioning list
Another air-conditioning single system of automatic start works during system exception.When air-conditioning dual system works, evaporation fan first works, a sky
After adjusting single system to start, restart another air-conditioning single system after being spaced 30S, compressor A, condensation fan A, compressor B and cold
Solidifying blower fan B works.
Described dual system air-conditioner control system, it is characterised in that：Described warning circuit includes an air-conditioning monosystem
System pressure anomaly, another air-conditioning single system pressure anomaly, an air-conditioning single system overload and another air-conditioning single system overload
Deng warning circuit.
Beneficial effects of the present invention：
1st, when the target temperature temperature difference of the invention for having ensured return air inlet for air-conditioner temperature and having set is 2 DEG C, air-conditioning single system alternating work
Make, the using and the reserved, an air-conditioning single system automatically switch extremely another air-conditioning single system work；
2nd, when the target temperature temperature difference of the invention for having ensured return air inlet for air-conditioner temperature and having set is 4 DEG C, air-conditioning dual system all works,
Timesharing starts, and reduces startup power.
3rd, the present invention has ensured air-conditioning in 5~27 DEG C of environment temperature and dual system refrigeration, A/C evaporator automatic defrosting,
Improve the refrigerating efficiency of air-conditioning under low temperature environment.
4th, the present invention ensured control system, evaporation fan etc. share, cost reduce and make air-conditioning equipment it is simple in construction, can
By property height.
Brief description of the drawings
Fig. 1 is structural principle block diagram of the present invention.
Embodiment
Referring to Fig. 1, a kind of dual system air-conditioner control system, include controller 1, operation display interface 2, signal detection list
Member 3 and electric execution unit 4, the input of controller 1 output end with operation display interface 2 and detecting signal unit 3 respectively
Connection, the output end of controller 1 are connected with the input of electric execution unit 4, are operated and are entered between display interface 2 and controller 1
Row data communication, detecting signal unit 3 include return air temperature sensor 5, coil temperature sensor 6, environment temperature sensor 7
And warning circuit 8, electric execution unit 4 include evaporation fan 9, compressor A10, condensation fan A11, compressor B12 and cold
Solidifying blower fan B13.
In the present invention, return air temperature sensor 5 detects A/C evaporator return air inlet temperature, and controller 1 is according to return air temperature
The difference automatic control air conditioner single system or dual system of the detected value of sensor 5 and the target temperature of the operation setting of display interface 2
Start and stop and work；When return air inlet temperature and the target temperature temperature difference set is 2 DEG C, air-conditioning single system alternation, a sky
Single system is adjusted to use, another air-conditioning single system is standby, and an air-conditioning single system automatically switches another air-conditioning single system extremely
Work；When return air inlet temperature and the target temperature temperature difference set is 4 DEG C, air-conditioning dual system works, and timesharing starts, to reduce
Startup power.
Control method is as follows：
T：Return air inlet temperature, T0：Design temperature, T1：External environment temperature.
1. at T >=T0+2 DEG C, air-conditioning single system refrigeration, during T≤T0, stop refrigeration；
At T >=T0+4 DEG C, air-conditioning dual system refrigeration, during T ＜ T0+2 DEG C, air-conditioning single system refrigeration, during T≤T0, stop refrigeration；
2. at T≤T0-2 DEG C, the heating of air-conditioning single system, during T >=T0, stop heating；
At T≤T0-4 DEG C, the heating of air-conditioning dual system, during T ＞ T0-2 DEG C, the heating of air-conditioning single system, during T >=T0, stop heating；
3. other situations are ventilation.
Environment temperature sensor 7 detects the environment temperature residing for air-conditioning, and coil temperature sensor 6 detects A/C evaporator disk
The temperature of pipe, when the environment temperature residing for air-conditioning is in 5~27 DEG C of scopes and air-conditioning dual system refrigeration, A/C evaporator removes automatically
Frost, to improve low temperature environment air conditioner refrigerating efficiency.
Control method is as follows：When 5 DEG C≤T1≤27 DEG C and dual system are freezed, air-conditioning, which continuously works, enters sky after 90min
Single system refrigeration mode is adjusted, a compressor is stopped, resumed work after 5min, and single system is again introduced into after 45min
Refrigeration mode, another compressor are stopped, resumed work after 5min, circulate successively.
Evaporation fan 9 shares in electric execution unit 4, and compressor A10 and condensation fan A11 are one group, compressor B12 and
Condensation fan B13 is another group, and two systems are completely independent.Controller 1 controls the start and stop of each electric execution unit, and control method is such as
Under：When air-conditioning single system works, evaporation fan 9, compressor A10 and condensation fan A11 work, compressor B12 and condensation fan
B13 is power failure state；Or evaporation fan 9, compressor B12 and condensation fan B13 work, compressor A10 and condensation fan A11 are
Power failure state；Another air-conditioning single system of automatic start works during one air-conditioning single system exception.When air-conditioning dual system works, steam
Hair blower fan 9 first works, and after air-conditioning single system starts, is spaced after 30S and restarts another air-conditioning single system, compressor A10,
Condensation fan A11, compressor B12 and condensation fan B13 work.
Warning circuit 8 includes an air-conditioning single system pressure anomaly, another air-conditioning single system pressure anomaly, a sky
Adjust the warning circuit such as single system overload and another air-conditioning single system overload.
Below in conjunction with accompanying drawing, the present invention is further illustrated：
The target temperature that controller 1 is set according to the return air inlet for air-conditioner temperature that return air temperature sensor 5 detects with operation display interface 2
The difference automatic control air conditioner of degree is aerated, freezes, heated.It is empty when return air inlet temperature is higher than the target temperature of setting 2 degree
Adjust single system refrigeration, evaporation fan 9, compressor A10, condensation fan A11 work or evaporation fan 9, compressor A12, condensating wind
Machine A13 works；When return air inlet temperature is higher than the target temperature of setting 4 degree, air-conditioning dual system refrigeration, an air-conditioning single system opens
After dynamic, restart another air-conditioning single system, evaporation fan 9, compressor A10, condensation fan A11, compressor after being spaced 30S
B12, condensation fan B13 work；When return air inlet temperature reaches the target temperature of setting, air-conditioning stops refrigeration and only blown, and steams
Blower fan 9 works hair, compressor A10, condensation fan A11, compressor B12, condensation fan B13 are stopped；When return air inlet temperature
When spending 2 degree lower than the target temperature of setting, the heating of air-conditioning single system, when return air inlet temperature is lower than the target temperature of setting 4 degree,
Air-conditioning dual system heats.
Controller 1 monitors air conditioner surroundings temperature and air conditioning evaporator coil temperature in real time, when environment temperature is in 5~27 DEG C of models
Enclose and when air-conditioning dual system is freezed, automatic control air conditioner evaporator defrost, enter air-conditioning after air-conditioning dual system continuous cooling 90min
Single system freezes, and a compressor is stopped, resumed work after 5min, and air-conditioning monosystem controlling is again introduced into after 45min
Chill formula, another compressor are stopped, resumed work after 5min, circulate successively.
Warning circuit 8 includes an air-conditioning single system pressure anomaly, another air-conditioning single system pressure anomaly, a sky
Adjust the warning circuit such as single system overload and another air-conditioning single system overload.The state of the real-time monitoring alarming circuit 8 of controller 1,
When an air-conditioning single system exception, another air-conditioning single system work of the automatic start of controller 1.
Claims (4)
- A kind of 1. dual system air-conditioner control system, it is characterised in that：Include controller, operation display interface, signal detection list Member and electric execution unit, the input output with the operation display interface and detecting signal unit respectively of the controller End connection, the output end of controller is connected with the input of the electric execution unit, described operation display interface with it is described Carry out data communication between controller, described detecting signal unit include return air temperature sensor, coil temperature sensor, Environment temperature sensor and warning circuit, described electric execution unit include evaporation fan, compressor A, condensation fan A, Compressor B and condensation fan B.
- 2. dual system air-conditioner control system according to claim 1, it is characterised in that：Described return air temperature sensor inspection A/C evaporator return air inlet temperature is surveyed, described controller is shown according to the return air temperature sensor detected value and the operation The difference automatic control air conditioner single system of the target temperature of interface setting or the start and stop and work of dual system；When return air inlet temperature with When the target temperature temperature difference set is 2 DEG C, air-conditioning single system alternation, an air-conditioning single system uses, another air-conditioning list System reserve, an air-conditioning single system automatically switch extremely another air-conditioning single system work；When return air inlet temperature and setting When the target temperature temperature difference is 4 DEG C, air-conditioning dual system works, and timesharing starts.
- 3. dual system air-conditioner control system according to claim 1, it is characterised in that：Described environment temperature sensor inspection The environment temperature residing for air-conditioning is surveyed, described coil temperature sensor detects the temperature of air conditioning evaporator coil, when residing for air-conditioning Environment temperature when 5~27 DEG C of scopes and air-conditioning dual system are freezed, A/C evaporator automatic defrosting.
- 4. dual system air-conditioner control system according to claim 1, it is characterised in that：Described warning circuit includes one Individual air-conditioning single system pressure anomaly, another air-conditioning single system pressure anomaly, an air-conditioning single system overload and another air-conditioning The warning circuits such as single system overload.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710723801.4A CN107339783B (en) | 2017-08-22 | 2017-08-22 | Dual-system air conditioner control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710723801.4A CN107339783B (en) | 2017-08-22 | 2017-08-22 | Dual-system air conditioner control system |
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| CN107339783A true CN107339783A (en) | 2017-11-10 |
| CN107339783B CN107339783B (en) | 2023-09-26 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110631215A (en) * | 2019-11-04 | 2019-12-31 | 珠海格力电器股份有限公司 | Method for controlling display panel, controller and dual-system air conditioner |
| CN110793169A (en) * | 2019-09-23 | 2020-02-14 | 珠海格力电器股份有限公司 | Dual-system control method and device and dual-system air conditioning equipment |
| CN110926100A (en) * | 2019-12-14 | 2020-03-27 | 冰山松洋生物科技(大连)有限公司 | ECO energy-saving mode control method and system for self-cascade dual-system ultralow-temperature refrigerator |
| CN112503717A (en) * | 2020-11-02 | 2021-03-16 | 珠海格力电器股份有限公司 | Control method and device of universal air conditioner controller and universal air conditioner controller |
| CN114484716A (en) * | 2022-01-11 | 2022-05-13 | 珠海格力电器股份有限公司 | Air conditioner, control method and device thereof and computer readable storage medium |
| CN117433194A (en) * | 2023-12-20 | 2024-01-23 | 珠海格力电器股份有限公司 | Control method and device of refrigeration system, refrigeration system and storage medium |
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| CN110926100A (en) * | 2019-12-14 | 2020-03-27 | 冰山松洋生物科技(大连)有限公司 | ECO energy-saving mode control method and system for self-cascade dual-system ultralow-temperature refrigerator |
| CN110926100B (en) * | 2019-12-14 | 2022-06-03 | 冰山松洋生物科技(大连)有限公司 | ECO energy-saving mode control method and system for self-cascade dual-system ultralow-temperature refrigerator |
| CN112503717A (en) * | 2020-11-02 | 2021-03-16 | 珠海格力电器股份有限公司 | Control method and device of universal air conditioner controller and universal air conditioner controller |
| CN112503717B (en) * | 2020-11-02 | 2022-04-08 | 珠海格力电器股份有限公司 | Control method and device of universal air conditioner controller and universal air conditioner controller |
| CN114484716A (en) * | 2022-01-11 | 2022-05-13 | 珠海格力电器股份有限公司 | Air conditioner, control method and device thereof and computer readable storage medium |
| CN117433194A (en) * | 2023-12-20 | 2024-01-23 | 珠海格力电器股份有限公司 | Control method and device of refrigeration system, refrigeration system and storage medium |
| CN117433194B (en) * | 2023-12-20 | 2024-04-05 | 珠海格力电器股份有限公司 | Control method and device of refrigeration system, refrigeration system and storage medium |
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