CN104482637A - Control system and control method for special two/four-pipe air conditioner for clean operating room - Google Patents
Control system and control method for special two/four-pipe air conditioner for clean operating room Download PDFInfo
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- CN104482637A CN104482637A CN201410663085.1A CN201410663085A CN104482637A CN 104482637 A CN104482637 A CN 104482637A CN 201410663085 A CN201410663085 A CN 201410663085A CN 104482637 A CN104482637 A CN 104482637A
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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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
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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
- F24F11/62—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
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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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
-
- 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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
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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
- F24F2110/00—Control inputs relating to air properties
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/20—Humidity
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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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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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
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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- Combustion & Propulsion (AREA)
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- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a control system for a special two/four-pipe air conditioner for a clean operating room. The control system comprises a cold water coil, a hot water coil, a cold water coil temperature detector, a hot water coil temperature detector, a cold water coil control valve, a hot water coil control valve, an electric heater, a humidifier, a temperature detector, a humidity detector and a controller, wherein the cold water coil temperature detector is used for detecting the water temperature of the cold water coil, the hot water coil temperature detector is used for detecting the water temperature of the hot water coil, and the temperature detector is used for detecting an indoor environment. When the hot water coil temperature detector detects hot water, the controller runs a four-pipe control system. When the hot water coil temperature detector detects cold water, the controller runs a two-pipe control system. The control system is compatible with an existing two-pipe or four-pipe air conditioner, different control modes are designed according to different running modes and different control environments, and a user can select the different control modes according to practical requirements, so that the control system can adapt to almost all use environments. The invention further discloses a control method for the special two/four-pipe air conditioner for the clean operating room.
Description
Technical field
The present invention relates to control technology field, particularly relate to control system and the control method of the special two/four-pipe 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 existing 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, exceedingly high logical 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.
Two pipes system air-conditioning system and four-pipe system air-conditioning system respectively have pluses and minuses, and existing air-conditioning system is two pipes system or is four-pipe system, the two well can not be combined.
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 system that can switch two pipes system and four-pipe system air-conditioning, improve the special two/four-pipe system air-conditioning of clean operating room of the air-conditioning scope of application.
The technical scheme that the present invention solves the employing of its technical problem is, the control system of the special two/four-pipe system air-conditioning of a kind of clean operating room is proposed, it comprises: chilled water coil, hot-water coil pipe, for detecting the chilled water coil temperature detector of chilled water coil water temperature, for detecting the hot-water coil pipe temperature detector of hot-water coil pipe water temperature, chilled water coil control valve, hot-water coil pipe control valve, electric heater, humidifier, for temperature detector and the moisture detector of sensing chamber's environment, and controller; When hot-water coil pipe temperature detector is detected as hot water, controller runs four-pipe system control system; When hot-water coil pipe temperature detector is detected as cold water, controller runs two pipes system control system.
Further, described two pipes system control system also comprises pattern handover subsystem, and the temperature that described pattern handover subsystem detects according to chilled water coil temperature detector switches pattern or winter modes in summer.
Further, described summer, pattern comprised constant temperature and humidity RACS and/or summer temperature priority acccess control subsystem.
Further, 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 chilled water coil 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 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 chilled water coil 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 chilled water coil 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, open cold water coil control valve is until temperature and humidity is all in the deviation range of permission.
Further, described winter modes such as under type controls:
The difference of more indoor Current Temperatures, Humidity Detection value and settings;
When temperature, humidity differences are greater than 0, close chilled water coil 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 chilled water coil control valve until temperature is in the deviation range of permission, start humidifier, what control humidifier adds moisture until humidity is in the deviation range of permission.
Further, described four-pipe system control system controls in the following way:
The difference of more indoor Current Temperatures detected value, Humidity Detection value and setting value;
If temperature, humidity differences are greater than 0, then export the opening of the analog signal control chilled water coil 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 chilled water coil control valve opening and reduces temperature further;
After temperature is lower than setting value, the analog signal simultaneously exporting 0-10V controls the opening of hot-water coil pipe control valve until temperature and humidity is all in the deviation range of permission;
If temperature, humidity differences are less than 0, then export the opening of the analog signal control hot-water coil pipe control valve of 0-10V according to the concrete numerical value of difference to improve temperature, humidifier work simultaneously;
If temperature reaches setting value, humidity does not reach setting value, and close hot-water coil pipe control valve, humidifier works on;
The Numerical Control chilled water coil control valve that the heat brought according to humidifier makes temperature rise and hot-water coil pipe control valve are until temperature and humidity is all in the deviation range of permission.
The present invention also provides the control method of the special two/four-pipe system air-conditioning of a kind of clean operating room, and it comprises step:
Detect hot-water coil pipe temperature, if run two pipes system control method when hot-water coil pipe temperature is cold water, if run four-pipe system control method when hot-water coil pipe temperature is hot water;
Described two pipes system control method comprises the steps:
Detect chilled water coil 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 gap is greater than 0, closed control valve, 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;
Described four-pipe system control method comprises the steps:
The difference of more indoor Current Temperatures detected value, Humidity Detection value and setting value;
If temperature, humidity differences are greater than 0, then export the opening of the analog signal control chilled water coil 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 chilled water coil control valve opening and reduces temperature further;
After temperature is lower than setting value, the analog signal simultaneously exporting 0-10V controls the opening of hot-water coil pipe control valve until temperature and humidity is all in the deviation range of permission;
If temperature, humidity differences are less than 0, then export the opening of the analog signal control hot-water coil pipe control valve of 0-10V according to the concrete numerical value of difference to improve temperature, humidifier work simultaneously;
If temperature reaches setting value, humidity does not reach setting value, and close hot-water coil pipe control valve, humidifier works on;
The Numerical Control chilled water coil control valve that the heat brought according to humidifier makes temperature rise and hot-water coil pipe control valve are until temperature and humidity is all in the deviation range of permission.
The compatible existing two pipes system air-conditioning of the present invention and four-pipe system air-conditioning, devise different control models for different operational modes, different controling environment, user also can select different control models to make the present invention can adapt to nearly all environment for use according to the demand of reality simultaneously.Further, the present invention under two pipes system pattern and constant temperature and humidity pattern and the constant temperature and humidity pattern of four-pipe system all utilize temperature as initial fiducial value, 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 two pipes system in a preferred embodiment of the present invention;
Fig. 3 is the control flow chart of four-pipe system in 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-Fig. 3, in a preferred embodiment of the present invention, the control system of the special two/four-pipe system air-conditioning of clean operating room, it comprises chilled water coil 100, hot-water coil pipe 200, for detecting the chilled water coil temperature detector 110 of chilled water coil water temperature, for detecting the hot-water coil pipe temperature detector 210 of hot-water coil pipe water temperature, chilled water coil control valve 120, hot-water coil pipe control valve 220, electric heater 300, humidifier 400; For temperature detector 500 and the moisture detector 600 of sensing chamber's environment, and controller 700.
Those devices start in different modes, such as when pattern in summer then without the need to starting humidifier, then without the need to controlled humidity value under summer temperature mode of priority.
The title of chilled water coil 100 and hot-water coil pipe 200 is only for distinguishing two pipelines, and do not represent that chilled water coil 100 can only pass into cold water, hot-water coil pipe 200 can only pass into hot water.When adopting two pipes system, chilled water coil 100 can pass into cold water or hot water, and hot-water coil pipe 200 does not pass into hot water or passes into cold water; At employing four-pipe system, chilled water coil 100 passes into cold water, and hot-water coil pipe 200 passes into hot water.
Hot water and cold water can adopt a certain temperature spot or temperature range to divide, such as, adopt 25 DEG C for diacritical point differentiation hot water and cold water, other temperature spots can certainly be adopted to distinguish.
When hot-water coil pipe temperature detector is detected as hot water, controller runs four-pipe system control system; When hot-water coil pipe temperature detector is detected as cold water, controller runs two pipes system control system.
In two pipes system control system, the water temperature passed into according to chilled water coil 100 be again divided into winter modes and summer pattern.Namely when chilled water coil passes into cold water, being pattern in summer, when chilled water coil passes into hot water, is winter modes.
In summer pattern, 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 chilled water coil 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, 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 chilled water coil 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 chilled water coil 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, open cold water coil control 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 chilled water coil 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.
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, close chilled water coil 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 chilled water coil control valve until temperature is in the deviation range of permission, start humidifier, what control humidifier adds moisture until humidity is in the deviation range of permission.
When adopting four-pipe system, four-pipe system control system controls in the following way:
The difference of more indoor Current Temperatures detected value, Humidity Detection value and setting value;
If temperature, humidity differences are greater than 0, then export the opening of the analog signal control chilled water coil 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 chilled water coil control valve opening and reduces temperature further;
After temperature is lower than setting value, the analog signal simultaneously exporting 0-10V controls the opening of hot-water coil pipe control valve until temperature and humidity is all in the deviation range of permission;
If temperature, humidity differences are less than 0, then export the opening of the analog signal control hot-water coil pipe control valve of 0-10V according to the concrete numerical value of difference to improve temperature, humidifier work simultaneously;
If temperature reaches setting value, humidity does not reach setting value, and close hot-water coil pipe control valve, humidifier works on;
The Numerical Control chilled water coil control valve that the heat brought according to humidifier makes temperature rise and hot-water coil pipe control valve are until temperature and humidity is all in the deviation range of permission.
Please refer to Fig. 2-Fig. 3, the present invention also provides a kind of control method of two/four-pipe system air-conditioning, and it comprises step:
Detect hot-water coil pipe temperature, if run two pipes system control method when hot-water coil pipe temperature is cold water, if run four-pipe system control method when hot-water coil pipe temperature is hot water;
Described two pipes system control method comprises the steps:
Detect chilled water coil 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; Now can reduce temperature, humidity by external environment condition, such as, cold new wind by being sent here by new blower fan reduces temperature and humidity value;
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;
Described four-pipe system control method comprises the steps:
The difference of more indoor Current Temperatures detected value, Humidity Detection value and setting value;
If temperature, humidity differences are greater than 0, then export the opening of the analog signal control chilled water coil 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 chilled water coil control valve opening and reduces temperature further;
After temperature is lower than setting value, the analog signal simultaneously exporting 0-10V controls the opening of hot-water coil pipe control valve until temperature and humidity is all in the deviation range of permission;
If temperature, humidity differences are less than 0, then export the opening of the analog signal control hot-water coil pipe control valve of 0-10V according to the concrete numerical value of difference to improve temperature, humidifier work simultaneously;
If temperature reaches setting value, humidity does not reach setting value, and close hot-water coil pipe control valve, humidifier works on;
The Numerical Control chilled water coil control valve that the heat brought according to humidifier makes temperature rise and hot-water coil pipe control valve are until temperature and humidity is all 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 (8)
1. the control system of the special two/four-pipe system air-conditioning of clean operating room, it is characterized in that: comprising: chilled water coil, hot-water coil pipe, for detecting the chilled water coil temperature detector of chilled water coil water temperature, for detecting the hot-water coil pipe temperature detector of hot-water coil pipe water temperature, chilled water coil control valve, hot-water coil pipe control valve, electric heater, humidifier, for temperature detector and the moisture detector of sensing chamber's environment, and controller; When hot-water coil pipe temperature detector is detected as hot water, controller runs four-pipe system control system; When hot-water coil pipe temperature detector is detected as cold water, controller runs two pipes system control system.
2. control system according to claim 1, is characterized in that: described two pipes system control system also comprises pattern handover subsystem, and the temperature that described pattern handover subsystem detects according to chilled water coil temperature detector switches pattern or winter modes in summer.
3. control system according to claim 2, is characterized in that: described summer, pattern comprised constant temperature and humidity RACS and/or summer temperature priority acccess control subsystem.
4. control system according to claim 3, is characterized in that: 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 chilled water coil 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.
5. the control system according to claim 3 or 4, is characterized in that: 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 chilled water coil 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 chilled water coil 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, open cold water coil control valve is until temperature and humidity is all in the deviation range of permission.
6. control system according to claim 2, is characterized in that: described winter modes comprises RACS in winter, and 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, close chilled water coil 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 chilled water coil control valve until temperature is in the deviation range of permission, start humidifier, what control humidifier adds moisture until humidity is in the deviation range of permission.
7. control system according to claim 1, is characterized in that: described four-pipe system control system controls in the following way:
The difference of more indoor Current Temperatures detected value, Humidity Detection value and setting value;
If temperature, humidity differences are greater than 0, then export the opening of the analog signal control chilled water coil 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 chilled water coil control valve opening and reduces temperature further;
After temperature is lower than setting value, the analog signal simultaneously exporting 0-10V controls the opening of hot-water coil pipe control valve until temperature and humidity is all in the deviation range of permission;
If temperature, humidity differences are less than 0, then export the opening of the analog signal control hot-water coil pipe control valve of 0-10V according to the concrete numerical value of difference to improve temperature, humidifier work simultaneously;
If temperature reaches setting value, humidity does not reach setting value, and close hot-water coil pipe control valve, humidifier works on;
The Numerical Control chilled water coil control valve that the heat brought according to humidifier makes temperature rise and hot-water coil pipe control valve are until temperature and humidity is all in the deviation range of permission.
8. a control method for the special two/four-pipe system air-conditioning of clean operating room, is characterized in that: comprise step:
Detect hot-water coil pipe temperature, if run two pipes system control method when hot-water coil pipe temperature is cold water, if run four-pipe system control method when hot-water coil pipe temperature is hot water;
Described two pipes system control method comprises the steps:
Detect chilled water coil 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;
Described four-pipe system control method comprises the steps:
The difference of more indoor Current Temperatures detected value, Humidity Detection value and setting value;
If temperature, humidity differences are greater than 0, then export the opening of the analog signal control chilled water coil 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 chilled water coil control valve opening and reduces temperature further;
After temperature is lower than setting value, the analog signal simultaneously exporting 0-10V controls the opening of hot-water coil pipe control valve until temperature and humidity is all in the deviation range of permission;
If temperature, humidity differences are less than 0, then export the opening of the analog signal control hot-water coil pipe control valve of 0-10V according to the concrete numerical value of difference to improve temperature, humidifier work simultaneously;
If temperature reaches setting value, humidity does not reach setting value, and close hot-water coil pipe control valve, humidifier works on;
The Numerical Control chilled water coil control valve that the heat brought according to humidifier makes temperature rise and hot-water coil pipe control valve are until temperature and humidity is all in the deviation range of permission.
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| CN201410663085.1A CN104482637A (en) | 2014-11-19 | 2014-11-19 | Control system and control method for special two/four-pipe air conditioner for clean operating room |
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