CN201652719U - Air volume feedback control device of central air-conditioner - Google Patents
Air volume feedback control device of central air-conditioner Download PDFInfo
- Publication number
- CN201652719U CN201652719U CN2009202953016U CN200920295301U CN201652719U CN 201652719 U CN201652719 U CN 201652719U CN 2009202953016 U CN2009202953016 U CN 2009202953016U CN 200920295301 U CN200920295301 U CN 200920295301U CN 201652719 U CN201652719 U CN 201652719U
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- temperature
- air volume
- air quantity
- air
- control module
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Abstract
An air volume feedback control device of a central air-conditioner relates to the control technique of central air-conditioners. An existing air-conditioner is over-large in air volume, wastes energy resources and is poor in creating indoor comfortableness for being sometimes hot and sometimes cold. The air volume feedback control device comprises an air volume detecting device, a temperature detecting device, a temperature PI control unit and an air volume PI control unit; the air volume detecting device arranged at an outlet of a coiled pipe is used for detecting air volume; the temperature detecting device is used for detecting indoor temperature; the temperature PI control unit is used for calculating a required air volume value according to difference between preset temperature and actual room temperature; and the air volume PI control unit is used for calculating a rotation speed control value of a fan motor according to difference between an actual air volume value obtained by the air volume detecting device and a required air volume value calculated by the temperature PI control unit. The device uses the PI adjust units to adjust the rotation speed of the motor so as to adjust output air volume, realize double closed-loop control of temperature and air volume and achieve the effects of improving comfortableness and saving energy.
Description
[technical field]
The utility model relates to the control technology of central air-conditioning, particularly about the control method and the device of the air quantity of central air-conditioning feedback.
[background technology]
Fan coil is the device of the normal a kind of air quantity transmission adopted of central air-conditioning at present, is installed in usually on the ceiling in room, and the air-flow of generation uniform temperature is regulated the temperature in the room, and a kind of comfortable environment temperature is provided.
Fig. 1 promptly shows the schematic diagram structural form of existing one group of fan coil control system, and its basic structure comprises controller, blower fan, coil pipe, stop valve, temperature sensor.
Basically, mainly setting in the central air-conditioning according to room temperature, rapid adjustment goes out suitable air quantity and changes indoor temperature, if but air quantity is suddenly big or suddenly small, can influence the comfort level in room, if air quantity control simultaneously is improper, also can waste a lot of energy.
For reaching the solution commonly used of regulating indoor temperature is that several grades of rotating speeds of control motor adjust several grades air quantity.The shortcoming of this way is, actual air output is unclear, can only regulate air quantity according to motor speed, and have nothing in common with each other according to the stringing of actual conditions in the air channel, this just causes the same motor speed, air output is to have nothing in common with each other, can only adjust indoor temperature by transferring maximum (top) speed, cause air quantity excessive, energy waste, sometimes hot and sometimes cold, indoor comfort level obviously descends.
[utility model content]
The technical assignment of the technical problems to be solved in the utility model and proposition is to overcome prior art scheme shortcoming, and a kind of air quantity feed back control system of central air-conditioning is provided, to reach the rapid adjustment of air quantity, the purpose of continual and steady work.For this reason, the utility model is taked following technical scheme:
The air quantity feed back control system of central air-conditioning, described central air-conditioning comprises blower motor, coil pipe and controller, it is characterized in that: the air quantity feedback device comprises
Be located at the air quantity checkout gear that the coil pipe outlet is used to detect air quantity;
Be used to detect the temperature-detecting device of indoor temperature;
Be used for calculating the temperature PI control module of required airflow value according to the difference of preset temperature and room actual temperature;
The difference that is used for the required airflow value that the actual air volume value that obtains according to the air quantity checkout gear and temperature PI control module calculate is calculated the air quantity PI control module of the rotating speed controlling value of blower motor.Utilize the PI regulon, adjust motor speed, adjust discharge quantity of fan whereby, realize two closed-loop controls of temperature and air quantity, reach the raising comfort level, energy-conservation effect utilization air quantity checkout gear, and with air quantity as feedback control parameters, to adopt close-loop control mode to replace the open loop control mode of motor rotary speed by empirical value, the air output fast and stable of realizing control central air-conditioning fan coil reaches the purpose in the control range, avoids that air quantity is excessive, energy waste, sometimes hot and sometimes cold situation take place.
As the further of technique scheme improved and replenish, the utility model also comprises following additional technical feature:
Described temperature PI control module and air quantity PI control module all are located in the controller.Adopt software to realize PI control, reduce cost.
Described air quantity PI control module is by a blower fan driver element control blower motor rotating speed of being located in the controller.Blower motor is the stepless time adjustment motor, and air quantity PI control module is regulated air quantity in real time, reaches steady, accurate, fast control air quantity purpose.
Described temperature, air quantity checkout gear signal output signal feed back to corresponding PI control module by connecting line.Realize closed-loop control.
Beneficial effect:
Utilize the PI regulon, adjust motor speed, adjust discharge quantity of fan whereby, realize two closed-loop controls of temperature and air quantity, reach the raising comfort level, energy-conservation effect.
[description of drawings]
Fig. 1 is existing fan coil pipe structure schematic diagram;
Fig. 2 is the utility model application structure schematic diagram;
Fig. 3 is a theory structure schematic diagram of the present utility model;
Fig. 4 A is the air quantity control curve map that adopts prior art;
Fig. 4 B is the air quantity control curve map that adopts technical solutions of the utility model.
[specific embodiment]
Below in conjunction with Figure of description the technical solution of the utility model is described in further detail.
As Fig. 2, shown in 3, the air quantity feed back control system of central air-conditioning, central air-conditioning comprises blower motor, coil pipe and controller, air quantity feedback device comprise is located at the air quantity checkout gear that the coil pipe outlet is used to detect air quantity, be used to detect the temperature-detecting device of indoor temperature, be used for calculating the temperature PI control module of required airflow value according to the difference of preset temperature and room actual temperature, the difference that is used for the required airflow value that the actual air volume value that obtains according to the air quantity checkout gear and temperature PI control module calculate is calculated the air quantity PI control module of the rotating speed controlling value of blower motor.Wherein temperature PI control module and air quantity PI control module all are located in the controller.Air quantity PI control module is by a blower fan driver element control blower motor rotating speed of being located in the controller.Temperature, air quantity checkout gear signal output signal feed back to corresponding PI control module by connecting line.
The air quantity feedback step of central air-conditioning is:
1) detects step, detect fan coil exit air quantity, measure indoor temperature by temperature-detecting device by the air quantity checkout gear that is installed in the coil pipe exit;
2) Wind Coverage Calculation step, actual temperature that detection is obtained and design temperature compare and draw both differences, and temperature PI control module calculates institute's required airflow according to temperature gap;
3) air quantity compensation process, actual air volume and institute's required airflow that detection is obtained compare, and draw both differences, and air quantity PI control module compensates air quantity according to the rotating speed of air quantity difference calculating blower motor;
4) set-up procedure, electric-motor drive unit is adjusted according to the blower motor rotating speed that calculates gained; Be back to the step 1) circulation.
Fig. 4 A, 4B are performance diagrams, contrast shows the curve of existing control method and the air quantity control of the utility model control method, and only there is large, medium and small third gear in Fig. 4 A air quantity, reach the stall of temperature range blower motor or switch height, in, low-rotate speed, make air quantity cut in and out, the time little when big, temperature fluctuation is big, and in Fig. 4 B, air quantity is constantly with the temperature adjustment, after reaching room temperature fast, air quantity and temperature fluctuation are little, and that indoor basic maintenance constant temperature, air quantity change is little, effectively improve comfort level.
The air quantity feed back control system of the central air-conditioning shown in above Fig. 2,3 is a specific embodiment of the utility model; the utility model substantive distinguishing features and progress have been embodied; can be according to the use needs of reality; under enlightenment of the present utility model; it is carried out the equivalent modifications of aspects such as shape, structure, all at the row of the protection domain of this programme.
Claims (4)
1. the air quantity feed back control system of central air-conditioning, described central air-conditioning comprises blower motor, coil pipe and controller, it is characterized in that: the air quantity feedback device comprises
Be located at the air quantity checkout gear that the coil pipe outlet is used to detect air quantity;
Be used to detect the temperature-detecting device of indoor temperature;
Be used for calculating the temperature PI control module of required airflow value according to the difference of preset temperature and room actual temperature;
The difference that is used for the required airflow value that the actual air volume value that obtains according to the air quantity checkout gear and temperature PI control module calculate is calculated the air quantity PI control module of the rotating speed controlling value of blower motor.
2. the air quantity feed back control system of central air-conditioning according to claim 1, it is characterized in that: described temperature PI control module and air quantity PI control module all are located in the controller.
3. the air quantity feed back control system of central air-conditioning according to claim 2 is characterized in that: described air quantity PI control module is by a blower fan driver element control blower motor rotating speed of being located in the controller.
4. the air quantity feed back control system of central air-conditioning according to claim 3, it is characterized in that: described temperature, air quantity checkout gear signal output signal feed back to corresponding PI control module by connecting line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202953016U CN201652719U (en) | 2009-12-29 | 2009-12-29 | Air volume feedback control device of central air-conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202953016U CN201652719U (en) | 2009-12-29 | 2009-12-29 | Air volume feedback control device of central air-conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201652719U true CN201652719U (en) | 2010-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202953016U Expired - Lifetime CN201652719U (en) | 2009-12-29 | 2009-12-29 | Air volume feedback control device of central air-conditioner |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101737900B (en) * | 2009-12-29 | 2012-07-04 | 卧龙电气集团股份有限公司 | Method and device for feedback control of air quantity of central air conditioner |
| CN102538148A (en) * | 2012-03-05 | 2012-07-04 | 中兴通讯股份有限公司 | Method and system for controlling wind volume of communication room |
| WO2018082103A1 (en) * | 2016-11-07 | 2018-05-11 | City University Of Hong Kong | A thermostat apparatus and a temperature regulation system |
-
2009
- 2009-12-29 CN CN2009202953016U patent/CN201652719U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101737900B (en) * | 2009-12-29 | 2012-07-04 | 卧龙电气集团股份有限公司 | Method and device for feedback control of air quantity of central air conditioner |
| CN102538148A (en) * | 2012-03-05 | 2012-07-04 | 中兴通讯股份有限公司 | Method and system for controlling wind volume of communication room |
| CN102538148B (en) * | 2012-03-05 | 2017-09-15 | 深圳市中兴康讯电子有限公司 | The control method and system of wind volume of communication room |
| WO2018082103A1 (en) * | 2016-11-07 | 2018-05-11 | City University Of Hong Kong | A thermostat apparatus and a temperature regulation system |
| CN110402355A (en) * | 2016-11-07 | 2019-11-01 | 香港城市大学 | Thermostat device and humidity control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20101124 Effective date of abandoning: 20091229 |