CN104534613A - A controlling system and a controlling method of a two-pipe air conditioner specially used for a clean operation room - Google Patents
A controlling system and a controlling method of a two-pipe air conditioner specially used for a clean operation room Download PDFInfo
- Publication number
- CN104534613A CN104534613A CN201410663173.1A CN201410663173A CN104534613A CN 104534613 A CN104534613 A CN 104534613A CN 201410663173 A CN201410663173 A CN 201410663173A CN 104534613 A CN104534613 A CN 104534613A
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- temperature
- humidity
- control
- difference
- setting value
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
Abstract
The invention discloses a controlling system of a two-pipe air conditioner specially used for a clean operation room. The controlling system includes a coiler which hot water or cold water can enter, a temperature detector and a humidity detector that are used for detecting the indoor environment, an electric heater, a controlling valve, and a controller. The controller includes a constant temperature and humidity controlling subsystem. Different running modes are designed according to different environments. Meanwhile, a customer can also select different running modes according to the actual demands so that the advantages of the two-pipe air conditioner can be used to the highest degree. Therefore, the two-pipe air conditioner has a better application scope. Furthermore, with the constant temperature and humidity mode, the temperature is used as the initial comparing value, and the humidity is used as the prior value so that the temperature and the humidity can be controlled within the deviation quickly and stably at the same time.
Description
Technical field
The present invention relates to control technology field, particularly relate to control system and the control method of the special two pipes system air-conditioning of a kind of clean operating room.
Background technology
According to the part throttle characteristics of building, two pipes system air-conditioning and four-pipe system air-conditioning can be divided in air-conditioning water route.Two pipes system air-conditioning to refer in air-conditioning box only one group of coil pipe, and summer leads to cold water, and winter leads to hot water, controls room temperature and humidity in summer or winter by heater or humidifier.Four-pipe system air-conditioning refers in air-conditioning box and cold pipe and heat pipe is housed simultaneously, often organizes coil pipe one and enters one time, totally four.
Four-pipe system system investments is large, complex management but have can the advantage of unrestricted choice heat supply at any time or cooling simultaneously; Two pipes system system investments is little, can meet most of demand.
But existing two pipes system air-conditioning system is all priority acccess control pattern with temperature, no matter and the humid control in room, in the occasion that some is special, such as, when medicine room, operating room etc. need the environment of constant temperature and humidity, the control system of existing two pipes system air-conditioning can not satisfy the demands.
Summary of the invention
Technical problem to be solved by this invention is, for the above-mentioned deficiency of prior art, proposes a kind of control accuracy high and can make by the control system adjusting environment to be in the special two pipes system air-conditioning of clean operating room of constant-temperature constant-humidity environment.
The technical scheme that the present invention solves the employing of its technical problem is, the control system of the special two pipes system air-conditioning of a kind of clean operating room is proposed, it comprises: the coil pipe that can pass into hot water or cold water, for temperature detector and the moisture detector of sensing chamber's environment, electric heater, control valve and controller; Described controller comprises constant temperature and humidity RACS, and described constant temperature and humidity RACS controls in the following way:
The difference of more indoor Current Temperatures detected value, Humidity Detection value and setting value;
When temperature gap is greater than 0, then export the opening of the analog signal control control valve of 0-10V according to the concrete numerical value of difference to reduce temperature;
If temperature reaches setting value, humidity does not reach setting value, continues outputting analog signal control control valve opening and reduces temperature further;
After temperature is lower than setting value, opening electric heater is to promote temperature, to reduce humidity until temperature and humidity is all in the deviation range of permission simultaneously;
When temperature gap is less than 0, then regulate institute's calorific requirement to improve temperature according to the concrete Numerical Control electric heater of difference with binary mode;
If temperature reaches setting value, humidity is higher than setting value, and the while of continuing to export control signal control electric heater quantity of heat given up, opening controlling valve is until temperature and humidity is all in the deviation range of permission.
Further, also comprise the coil temperature detector for detecting coil temperature, described controller also comprises pattern handover subsystem, and the temperature that described pattern handover subsystem detects according to coil temperature detector switches pattern or winter modes in summer.
Further, described controller also comprises summer temperature priority acccess control subsystem; Described summer temperature priority acccess control subsystem controls in the following way:
The difference of more indoor Current Temperatures detected value and setting value;
When temperature gap is greater than 0, then export the opening of the analog signal control control valve of 0-10V according to the concrete numerical value of difference to reduce temperature;
When temperature gap is less than 0, then regulate institute's calorific requirement to improve temperature until temperature is in the deviation range of permission according to the concrete Numerical Control electric heater of difference with binary mode.
Further, described controller also comprises RACS in winter, and described control system also comprises humidifier; Described winter, RACS controlled in the following way:
The difference of more indoor Current Temperatures, Humidity Detection value and settings;
When temperature, humidity differences are greater than 0, closed control valve, humidifier;
When temperature, humidity differences are less than 0, the analog signal exporting 0-10V according to the concrete numerical value of difference controls the opening of control valve until temperature is in the deviation range of permission, and start humidifier, what control humidifier adds moisture until humidity is in the deviation range of permission.
The present invention also provides the control method of the special two pipes system air-conditioning of a kind of clean operating room, and it comprises step:
Detect coil pipe water temperature, judge operation pattern in summer or winter modes;
If run pattern in summer, select to run summer temperature mode of priority or constant temperature and humidity pattern according to user;
Described summer temperature mode of priority comprises step:
The difference of more indoor Current Temperatures detected value and setting value;
When temperature gap is greater than 0, then export the opening of the analog signal control control valve of 0-10V according to the concrete numerical value of difference to reduce temperature;
When temperature gap is less than 0, then regulate institute's calorific requirement to improve temperature until temperature is in the deviation range of permission according to the concrete Numerical Control electric heater of difference with binary mode;
Described constant temperature and humidity pattern comprises step:
The difference of more indoor Current Temperatures detected value, Humidity Detection value and setting value;
When temperature gap is greater than 0, then export the opening of the analog signal control control valve of 0-10V according to the concrete numerical value of difference to reduce temperature;
If temperature reaches setting value, humidity does not reach setting value, continues outputting analog signal control control valve opening and reduces temperature further;
After temperature is lower than setting value, opening electric heater is to promote temperature, to reduce humidity until temperature and humidity is all in the deviation range of permission simultaneously;
When temperature gap is less than 0, then regulate institute's calorific requirement to improve temperature according to the concrete Numerical Control electric heater of difference with binary mode;
If temperature reaches setting value, humidity is higher than setting value, and the while of continuing to export control signal control electric heater quantity of heat given up, opening controlling valve is until temperature and humidity is all in the deviation range of permission;
Described winter modes comprises step:
The difference of more indoor Current Temperatures, Humidity Detection value and settings;
When temperature, humidity differences are greater than 0, closed control valve, closedown humidifier;
When temperature gap is less than 0, the analog signal exporting 0-10V according to the concrete numerical value of difference controls the opening of control valve until temperature is in the deviation range of permission, and start humidifier, what control humidifier adds moisture until humidity is in the deviation range of permission.
(such as winter, humidity was easy to control, and temperature easily rises difficulty and falls to the present invention is directed to the different operational mode of different Environment Design; And the higher difficulty of humidity in summer is removed, easy temperature control system), user also can select different operational modes to make the present invention can maximally utilise the advantage of two pipes system air-conditioning according to the demand of reality simultaneously, makes two pipes system air-conditioning have the better scope of application.Further, constant temperature and humidity pattern of the present invention utilizes temperature as initial fiducial value, and humidity, can fast and stably temperature and humidity controlled in deviation range as preferred value simultaneously.
Accompanying drawing explanation
Fig. 1 is the theory diagram of a preferred embodiment of the present invention;
Fig. 2 is the control flow chart of a preferred embodiment of the present invention.
Detailed description of the invention
Be below specific embodiments of the invention and by reference to the accompanying drawings, technical scheme of the present invention is further described, but the present invention be not limited to these embodiments.
Please refer to Fig. 1, in a preferred embodiment of the present invention, the control system of the special two pipes system air-conditioning of clean operating room, it comprises the coil pipe 100 that can pass into hot water or cold water, for temperature detector 200 and the moisture detector 300 of sensing chamber's environment, electric heater 400, control valve 500 and controller 600.Also comprise coil temperature detector 700, humidifier 800.
Those devices start in different modes, such as when pattern in summer then without the need to starting humidifier, then without the need to starting moisture detector under summer temperature mode of priority.
Divide in controller 600 and have multiple RACS, comprise pattern handover subsystem 610, summer temperature priority acccess control subsystem 620, constant temperature and humidity RACS 630, winter RACS 640.
Subsystems is selected to start according to pre-set programs or user, and different RACSs makes said apparatus run in a different manner.
Coil temperature detector 700 makes pattern handover subsystem 610 switch to pattern or winter modes in summer according to the coil pipe water temperature detected (hot water or cold water).
When adopting pattern in summer, summer temperature priority acccess control subsystem or constant temperature and humidity RACS can be adopted according to the instruction of user or according to actual environment demand.Such as, summer temperature priority acccess control subsystem is adopted under some environment not high to humidity requirement or the environment that needs to reach design temperature fast, at some, all higher environment is required to humidity and temperature, such as, under the environment such as operating room, medicine room, adopt constant temperature and humidity RACS.Certainly, summer temperature priority acccess control subsystem also first can be adopted to make temperature reach setting value fast, then switch to constant temperature and humidity RACS and make the temperature and humidity of whole environment can arrive preset value quickly.
Summer temperature priority acccess control subsystem controls in the following way:
The difference of more indoor Current Temperatures detected value and setting value;
When temperature gap is greater than 0, then export the opening of the analog signal control control valve of 0-10V according to the concrete numerical value of difference to reduce temperature;
When temperature gap is less than 0, then regulate institute's calorific requirement to improve temperature until temperature is in the deviation range of permission according to the concrete Numerical Control electric heater of difference with binary mode.
Electric heater binary mode refers to by electrically heated power with model split such as 1:2:4:8, and when the electric heater capacity of input 1 equal portions can not satisfy the demands, then drop into the electric heater capacity of two equal portions, the rest may be inferred.
Constant temperature and humidity RACS controls in the following way:
The difference of more indoor Current Temperatures detected value, Humidity Detection value and setting value;
When temperature gap is greater than 0, then export the opening of the analog signal control control valve of 0-10V according to the concrete numerical value of difference to reduce temperature;
If temperature reaches setting value, humidity does not reach setting value, continues outputting analog signal control control valve opening and reduces temperature further;
After temperature is lower than setting value, opening electric heater is to promote temperature, to reduce humidity until temperature and humidity is all in the deviation range of permission simultaneously;
When temperature gap is less than 0, then regulate institute's calorific requirement to improve temperature according to the concrete Numerical Control electric heater of difference with binary mode;
If temperature reaches setting value, humidity is higher than setting value, and the while of continuing to export control signal control electric heater quantity of heat given up, opening controlling valve is until temperature and humidity is all in the deviation range of permission.
In constant temperature and humidity RACS, using temperature as initial fiducial value, but using humidity as preferred value.That is, even if temperature reaches setting value, but still continue when humidity does not reach setting value to reduce temperature, worked by heater and control valve makes humidity and temperature all can control in the deviation range of setting value permission simultaneously.
It will be clear that above-mentioned constant temperature and humidity RACS is a closed-loop control subsystem, each step in constant temperature and humidity RACS all complements each other.
When coil temperature detector 700 is hot water according to the coil pipe water temperature detected, then switch to winter modes.Under winter modes, run RACS in winter, the step compensated chamber humidity of access control humidifier in winter RACS.
Winter, RACS controlled in the following way:
The difference of more indoor Current Temperatures, Humidity Detection value and settings;
When temperature, humidity differences are greater than 0, closed control valve, humidifier; The cold new wind now can sent here by new blower fan reduces temperature and humidity;
When temperature, humidity differences are less than 0, the analog signal exporting 0-10V according to the concrete numerical value of difference controls the opening of control valve until temperature is in the deviation range of permission, and start humidifier, what control humidifier adds moisture until humidity is in the deviation range of permission.
Please refer to Fig. 2, the present invention also provides the control method of the special two pipes system air-conditioning of a kind of clean operating room, and it comprises step:
Detect coil pipe water temperature, judge operation pattern in summer or winter modes;
If run pattern in summer, select to run summer temperature mode of priority or constant temperature and humidity pattern according to user;
Described summer temperature mode of priority comprises step:
The difference of more indoor Current Temperatures detected value and setting value;
When temperature gap is greater than 0, then export the opening of the analog signal control control valve of 0-10V according to the concrete numerical value of difference to reduce temperature;
When temperature gap is less than 0, then regulate institute's calorific requirement to improve temperature until temperature is in the deviation range of permission according to the concrete Numerical Control electric heater of difference with binary mode;
Described constant temperature and humidity pattern comprises step:
The difference of more indoor Current Temperatures detected value, Humidity Detection value and setting value;
When temperature gap is greater than 0, then export the opening of the analog signal control control valve of 0-10V according to the concrete numerical value of difference to reduce temperature;
If temperature reaches setting value, humidity does not reach setting value, continues outputting analog signal control control valve opening and reduces temperature further;
After temperature is lower than setting value, opening electric heater is to promote temperature, to reduce humidity until temperature and humidity is all in the deviation range of permission simultaneously;
When temperature gap is less than 0, then regulate institute's calorific requirement to improve temperature according to the concrete Numerical Control electric heater of difference with binary mode;
If temperature reaches setting value, humidity is higher than setting value, and the while of continuing to export control signal control electric heater quantity of heat given up, opening controlling valve is until temperature and humidity is all in the deviation range of permission;
Described winter modes comprises step:
The difference of more indoor Current Temperatures, Humidity Detection value and settings;
When temperature, humidity differences are greater than 0, closed control valve, humidifier;
When temperature, humidity differences are less than 0, the analog signal exporting 0-10V according to the concrete numerical value of difference controls the opening of control valve until temperature is in the deviation range of permission, and start humidifier, what control humidifier adds moisture until humidity is in the deviation range of permission.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Claims (5)
1. a control system for the special two pipes system air-conditioning of clean operating room, is characterized in that: comprising: the coil pipe that can pass into hot water or cold water, for temperature detector and the moisture detector of sensing chamber's environment, and electric heater, control valve and controller; Described controller comprises constant temperature and humidity RACS, and described constant temperature and humidity RACS controls in the following way:
The difference of more indoor Current Temperatures detected value, Humidity Detection value and setting value;
When temperature gap is greater than 0, then export the opening of the analog signal control control valve of 0-10V according to the concrete numerical value of difference to reduce temperature;
If temperature reaches setting value, humidity does not reach setting value, continues outputting analog signal control control valve opening and reduces temperature further;
After temperature is lower than setting value, opening electric heater is to promote temperature, to reduce humidity until temperature and humidity is all in the deviation range of permission simultaneously;
When temperature gap is less than 0, then regulate institute's calorific requirement to improve temperature according to the concrete Numerical Control electric heater of difference with binary mode;
If temperature reaches setting value, humidity is higher than setting value, and the while of continuing to export control signal control electric heater quantity of heat given up, opening controlling valve is until temperature and humidity is all in the deviation range of permission.
2. the control system of the special two pipes system air-conditioning of clean operating room according to claim 1, it is characterized in that: also comprise the coil temperature detector for detecting coil temperature, described controller also comprises pattern handover subsystem, and the temperature that described pattern handover subsystem detects according to coil temperature detector switches pattern or winter modes in summer.
3. the control system of the special two pipes system air-conditioning of clean operating room according to claim 2, is characterized in that: described controller also comprises summer temperature priority acccess control subsystem; Described summer temperature priority acccess control subsystem controls in the following way:
The difference of more indoor Current Temperatures detected value and setting value;
When temperature gap is greater than 0, then export the opening of the analog signal control control valve of 0-10V according to the concrete numerical value of difference to reduce temperature;
When temperature gap is less than 0, then regulate institute's calorific requirement to improve temperature until temperature is in the deviation range of permission according to the concrete Numerical Control electric heater of difference with binary mode.
4. the control system of the special two pipes system air-conditioning of the clean operating room according to Claims 2 or 3, it is characterized in that: described controller also comprises RACS in winter, described control system also comprises humidifier; Described winter, RACS controlled in the following way:
The difference of more indoor Current Temperatures, Humidity Detection value and settings;
When temperature, humidity differences are greater than 0, closed control valve, humidifier;
When temperature, humidity differences are less than 0, the analog signal exporting 0-10V according to the concrete numerical value of difference controls the opening of control valve until temperature is in the deviation range of permission, and start humidifier, what control humidifier adds moisture until humidity is in the deviation range of permission.
5. a control method for the special two pipes system air-conditioning of clean operating room, is characterized in that: comprise step:
Detect coil pipe water temperature, judge operation pattern in summer or winter modes;
If run pattern in summer, select to run summer temperature mode of priority or constant temperature and humidity pattern according to user;
Described summer temperature mode of priority comprises step:
The difference of more indoor Current Temperatures detected value and setting value;
When temperature gap is greater than 0, then export the opening of the analog signal control control valve of 0-10V according to the concrete numerical value of difference to reduce temperature;
When temperature gap is less than 0, then regulate institute's calorific requirement to improve temperature until temperature is in the deviation range of permission according to the concrete Numerical Control electric heater of difference with binary mode;
Described constant temperature and humidity pattern comprises step:
The difference of more indoor Current Temperatures detected value, Humidity Detection value and setting value;
When temperature gap is greater than 0, then export the opening of the analog signal control control valve of 0-10V according to the concrete numerical value of difference to reduce temperature;
If temperature reaches setting value, humidity does not reach setting value, continues outputting analog signal control control valve opening and reduces temperature further;
After temperature is lower than setting value, opening electric heater is to promote temperature, to reduce humidity until temperature and humidity is all in the deviation range of permission simultaneously;
When temperature gap is less than 0, then regulate institute's calorific requirement to improve temperature according to the concrete Numerical Control electric heater of difference with binary mode;
If temperature reaches setting value, humidity is higher than setting value, and the while of continuing to export control signal control electric heater quantity of heat given up, opening controlling valve is until temperature and humidity is all in the deviation range of permission;
Described winter modes comprises step:
The difference of more indoor Current Temperatures, Humidity Detection value and settings;
When temperature, humidity differences are greater than 0, closed control valve, startup humidifier;
When temperature, humidity differences are less than 0, the analog signal exporting 0-10V according to the concrete numerical value of difference controls the opening of control valve until temperature is in the deviation range of permission, and start humidifier, what control humidifier adds moisture until humidity is in the deviation range of permission.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410663173.1A CN104534613A (en) | 2014-11-19 | 2014-11-19 | A controlling system and a controlling method of a two-pipe air conditioner specially used for a clean operation room |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410663173.1A CN104534613A (en) | 2014-11-19 | 2014-11-19 | A controlling system and a controlling method of a two-pipe air conditioner specially used for a clean operation room |
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| CN104534613A true CN104534613A (en) | 2015-04-22 |
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Cited By (3)
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| CN106871339A (en) * | 2017-01-24 | 2017-06-20 | 成都宏达洁净技术工程有限公司 | A kind of operating room four seasons temperature and humidity control system |
| CN107062535A (en) * | 2017-03-28 | 2017-08-18 | 深圳达实智能股份有限公司 | A kind of independent temperature-humidity control method and device applied to hospital operating room |
| CN107702284A (en) * | 2017-10-09 | 2018-02-16 | 昆山璟赫机电工程有限公司 | A kind of constant temperature and humidity system and its control method |
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| CN107702284A (en) * | 2017-10-09 | 2018-02-16 | 昆山璟赫机电工程有限公司 | A kind of constant temperature and humidity system and its control method |
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