CN105588209A - Temperature control device controlling opening degree limit of water valve according to supply air volume for air processor - Google Patents
Temperature control device controlling opening degree limit of water valve according to supply air volume for air processor Download PDFInfo
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- CN105588209A CN105588209A CN201610112832.1A CN201610112832A CN105588209A CN 105588209 A CN105588209 A CN 105588209A CN 201610112832 A CN201610112832 A CN 201610112832A CN 105588209 A CN105588209 A CN 105588209A
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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
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
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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
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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
- F24F11/89—Arrangement or mounting of control or safety devices
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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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/28—Arrangement or mounting of filters
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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
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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
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
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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
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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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
- F24F2221/00—Details or features not otherwise provided for
- F24F2221/54—Heating and cooling, simultaneously or alternatively
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- Combustion & Propulsion (AREA)
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- 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 relates to a temperature control device controlling the opening degree limit of a water valve according to the supply air volume for an air processor. The temperature control device comprises the air processor, the electric water valve, a controller and a control panel, and a fan is arranged in the air processor. The temperature control device is characterized in that a supply air volume sensor is arranged in an air supply channel of the air processor, the air processor is provided with an air return unit, an air mixing unit, a filtering unit, a refrigerating unit, a heating unit, a humidifying unit and an air supply unit, an air volume signal output end of the supply air volume sensor is connected to a supply air volume feedback signal input end of the controller, a fan rotation speed feedback signal output end of the air processor is connected to a fan rotation speed feedback signal input end of the controller, and an opening degree feedback signal output end of the electric water valve is connected to an opening degree feedback signal input end of the controller; the controller outputs opening degree control signals for the electric water valve for controlling the opening degree of the electric water valve to be within the opening degree limit, and therefore a temperature control structure controlling the opening degree limit of the water valve according to the supply air volume for the air processor is formed. The temperature control device has the beneficial effects that the efficiency is high, the time and the labor are saved, the accuracy is high, and the energy conservation performance and the comfort level of an air-conditioning system are guaranteed.
Description
Technical field
The present invention relates to a kind of air processing machine temperature control equipment, especially relate to one and open according to air output control water valveSpend spacing air processing machine temperature control equipment. Belong to HVAC technical field.
Background technology
Air processing machine is the end prod of central air-conditioning, by heat exchanger, water pipe, filter, fan, drip tray,The composition such as air bleeding valve and support, its operation principle is the air that constantly recycles room, place in unit, and air is passed throughAfter cold water (hot water) coil pipe, be cooled (heating), to keep the constant of room temperature.
Along with the development of air-treatment machine technology, it is large that the field of utilization also becomes thereupon, existing be mainly used in office,Some places such as hospital, scientific research institution. Air processing machine is mainly the positive action by relying on blower fan, passes through surface coolerEffect get a desired effect.
The end heat exchange property of central air-conditioning system has a great impact the operation of system. In prior art, a kind of airProcessor, air quantity can artificially regulate, and water route adopts electric two-way valve to carry out break-make control. When air intake parameter is fixed,When air quantity is design air flow, only have in the time that the water yield and cold are design conditions, import and export the temperature difference and be only designed temperature difference. IfDischarge reduction, cold reduces, and now imports and exports the temperature difference and can be greater than designed temperature difference. If the water yield is excessive, import and export the temperature differenceCan be less than designed temperature difference. In order to ensure the energy-saving effect of chilled water system, just must avoid occurring " large flow, the little temperature difference "Phenomenon, thereby ensure the heat transfer effect of end and rational hydraulic equilibrium performance. When air output hour, coil heat exchangeAbility declines, and water effluent amount should reduce, and can cause equally the super stream of the water yield, reduces the asking of the heat-exchanging water temperature difference of air processing machineTopic. Therefore,, when air output is different, should limit to some extent the aperture of water valve.
The air processing machine of prior art, owing to not arranging according to air output control water valve aperture position limiting structure, existsFollowing aspect problem: (1), for avoiding " large flow, the little temperature difference ", needs manually adjustment air quantity and the water yield, efficiency is low,Take time and effort. (2) manual adjustment easily produces human error, and precision is low. For this reason, need design a kind of according to air outputControl the spacing air processing machine temperature control equipment of water valve aperture, when thering is the heat exchange amount that needs are provided, make air-conditioning coldThe actual temperature difference of operation of freezing the end of water system is greater than designed temperature difference, avoids the phenomenon of " large flow, the little temperature difference ", ensuresThe feature of the energy-conservation and comfortableness of air-conditioning system.
Summary of the invention
Object of the present invention is that the air processing machine in order to solve prior art needs manually to adjust air quantity and the water yield, efficiencyLow, take time and effort, easily produce human error and the low problem of precision. Provide a kind of according to air output control water valve apertureSpacing air processing machine temperature control equipment. This air processing machine temperature control equipment is realized air output control water valve apertureSpacing, avoid the phenomenon of " large flow, the little temperature difference ", ensure the energy-conservation and comfortableness of air-conditioning system.
Object of the present invention can reach by following technical solution:
According to the spacing air processing machine temperature control equipment of air output control water valve aperture, comprise air processing machine, electronicWater valve, controller and control panel, be provided with blower fan in air processing machine; Its design feature is: at air processing machineIn air-supply passage, be provided with air output sensor, air processing machine has return air unit, mixed wind unit, filter element, refrigerationUnit, heating unit, humidifying unit and blowing unit, controller has signal processing unit and feedback information processing unitAnd several input end of analog signal, several analog signal outputs, several digital signal input ends and severalDigital signal output end; Air output sensor has air volume test head and air volume signal output, and control panel has demonstrationScreen and operation push-button, operation push-button, as manual ringing input, is inputted setting value, the dynamoelectric water valve aperture of room temperatureSpacing value; The signal output part of control panel connects the signal input part of controller, the air volume signal of air output sensorOutput connects the air output feedback signal input of controller, and the rotation speed of fan feedback signal output of air processing machine connectsConnect the rotation speed of fan feedback signal input of controller, the open degree feedback signal output part of dynamoelectric water valve connects opening of controllerDegree feedback signal input; It is right that controller carries out the air output feedback signal of air output sensor and setting air output signalRatio, the aperture control signal of output dynamoelectric water valve, with the aperture of controlling dynamoelectric water valve in the aperture of setting is spacing, formThe air processing machine temperature control structure spacing according to air output control water valve aperture.
Object of the present invention can also reach by following technical solution:
Further, in the return air channel of air processing machine, be provided with return air temperature sensor, return air temperature sensor hasTemperature detecting head and temperature signal output, it is anti-that the temperature signal output of return air temperature sensor connects the temperature of controllerFeedback signal input, controller, according to the deviation of the setting value of current return air temperature and room temperature, utilizes built-in letterAfter number processing unit processes, send to the control input end of dynamoelectric water valve using result as control signal, it is carried outSynchronization action, controls indoor temperature.
Further, controller is provided with multiple I/O ports, and wherein, analog input port AI comprises air output signalInput, dynamoelectric water valve open degree feedback signal input part, rotation speed of fan feedback signal input, analog output portAO comprises dynamoelectric water valve aperture control signal output, rotation speed of fan control signal output, digital quantity input portDI comprises blower fan start and stop status signal input, manual auto state signal input part, failure alarm signal input,Digital output port DO comprises blower fan on off control signal output part, manually automatic changeover control signal output.
Further, be connected with fault alarm at the output of controller, controller has feedback information processing unit,The rotation speed of fan feedback signal of the feedback information processing unit of controller to air processing machine, the open degree feedback letter of dynamoelectric water valveNumber carry out analyzing and processing, form alarm signal input that alarm signal outputs to fault alarm, report to the police with driving malfunctionDevice is reported to the police.
Further, signal processing unit has PID calculation process module, and this PID calculation process module is to air outputThe air output feedback signal of sensor and setting air output signal are processed and are formed air quantity difference signal, and controller passes through air quantityThe aperture of difference signal control dynamoelectric water valve.
Further, the blower fan of air processing machine is the adjustable direct current brushless motor of air quantity or frequency conversion fan, and dynamoelectric water valve isCan change by the signal of telecommunication motorized adjustment two water-through valves of valve opening, defeated respectively by the operation push-button region of control panelEnter blower fan start stop signal, manually auto state switching signal, and the blower fan start stop signal input of delivery controller and manualAuto state switching signal input.
Further, air output sensor is made up of pressure sensor.
Further, the output of controller is connected with fault alarm.
Further, described mixed wind unit mixes for new wind and return air, and described filter element is for filtered airGrain, described humidifying unit is for increasing air humidity, and air processing machine internal element structure is followed successively by return air unit, mixed windUnit, filter element, refrigeration unit, heating unit, humidifying unit, blowing unit.
Further, described display screen shows current indoor temperature and/or design temperature and/or air processing machine start and stop stateAnd/or air force; Described controller and control panel are electrically connected by RS485 interface.
The present invention has following outstanding beneficial effect:
1, the present invention by being provided with air output sensor, the wind of air output sensor in the air-supply passage of air processing machineAmount signal output part connects the air output feedback signal input of controller, and the rotation speed of fan feedback signal of air processing machine is defeatedGo out the rotation speed of fan feedback signal input that end connects controller, the open degree feedback signal output part of dynamoelectric water valve connects to be controlledThe open degree feedback signal input part of device; Controller is by the air output feedback signal of air output sensor and setting air output signalContrast, the aperture control signal of output dynamoelectric water valve, with the aperture of controlling dynamoelectric water valve in the aperture of setting is spacing,Form the air processing machine temperature control structure spacing according to air output control water valve aperture; Therefore, can solve existing skillThe air processing machine of art needs manually to adjust air quantity and the water yield, and efficiency is low, take time and effort, easily produce human error and essenceSpend low problem, avoid the phenomenon of " large flow, the little temperature difference "; When being provided, the heat exchange amount needing makes air-condition freezingThe actual temperature difference of operation of the end of water system is greater than designed temperature difference; Have that efficiency is high, time saving and energy saving, precision is high, guarantee is emptyThe beneficial effect of the energy-conservation and comfortableness of adjusting system.
2, the present invention limits the aperture of two water-through valves according to the size of air output, thereby the heat exchange amount needing providing is providedTime, the air processing machine discharge under this air output does not exceed the flow of needs, and the chilled water Inlet and outlet water temperature difference can notToo low, the actual Inlet and outlet water temperature difference is greater than designed temperature difference, avoids the phenomenon of " large flow, the little temperature difference ". Because its operating mode beginsReach eventually the scope of desirable operating point, under identical operate power, its effect is optimum efficiency and according to user's needTo arbitrarily regulate, both ensure the energy-saving effect of air-conditioning system, can allow again more comfortableness of user.
3, of the present invention carry out again the filtration treatment of next stage after new wind and indoor return air are mixed or humidification is processed orPerson's heat treated or cooling are processed; Filter element can filtered air particle, humidifying unit can increase air humidity,Fully adapt to each regional air quality demand, reach object applied widely.
4, the present invention's feedback information processing to controller by the working condition meeting immediate feedback of dynamoelectric water valve, frequency conversion fanUnit is analyzed, and dynamoelectric water valve aperture, the frequency conversion fan rotating speed default with signal processing unit compare, if do not kissedClose and send alarm signal to fault alarm, send non-alarm signal to fault alarm as coincideing, reach instant prisonSurvey the effect of immediate feedback instant alarming, avoid security incident to occur.
Brief description of the drawings
Fig. 1 is the structured flowchart of the specific embodiment of the invention 1.
Fig. 2 is that the signal of the specific embodiment of the invention 1 flows to block diagram.
Fig. 3 is the internal element structured flowchart of the air processing machine of the specific embodiment of the invention 1.
Detailed description of the invention
Specific embodiment 1:
Further illustrate the detailed description of the invention of invention below in conjunction with the embodiment of accompanying drawing.
See figures.1.and.2, the present embodiment comprises air processing machine 1, dynamoelectric water valve 2, controller 3 and control panel 4,In air processing machine 1, be provided with blower fan; In the air-supply passage of air processing machine 1, be provided with air output sensor 5, air placeReason machine 1 has return air unit, mixed wind unit, filter element, refrigeration unit, heating unit, humidifying unit and air-supply listUnit, controller 3 has signal processing unit and feedback information processing unit and several input end of analog signal, someIndividual analog signal output, several digital signal input ends and several digital signal output ends; Air output sensor 5Have air volume test head and air volume signal output, control panel 4 has display screen and operation push-button, operation push-button conductManual ringing input, the setting value of input room temperature, the spacing value of dynamoelectric water valve 2 apertures; The letter of control panel 4Number output connects the signal input part of controller 3, and the air volume signal output of air output sensor 5 connects controller 3Air output feedback signal input, the rotation speed of fan feedback signal output of air processing machine 1 connects the wind of controller 3Machine speed feedback signal input, the open degree feedback signal output part of dynamoelectric water valve 2 connects the open degree feedback letter of controller 3Number input; Controller 3 contrasts the air output feedback signal of air output sensor 5 with setting air output signal,The aperture control signal of output dynamoelectric water valve 2, with the aperture of controlling dynamoelectric water valve 2 in the aperture of setting is spacing, formThe air processing machine temperature control structure spacing according to air output control water valve aperture.
In the present embodiment:
In the return air channel of air processing machine 1, be provided with return air temperature sensor, return air temperature sensor has temperature detectionHead and temperature signal output, the temperature signal output of return air temperature sensor connects the temperature feedback signal of controller 3Input, controller 3, according to the deviation of the setting value of current return air temperature and room temperature, utilizes built-in signal placeAfter reason cell processing, send to the control input end of dynamoelectric water valve 2 using result as control signal, it is carried out sameStep action, controls indoor temperature.
Controller 3 is provided with multiple I/O ports, wherein, analog input port AI comprise air output signal input part,Dynamoelectric water valve 2 open degree feedback signal input parts, rotation speed of fan feedback signal input, analog output port AO comprisesDynamoelectric water valve 2 aperture control signal outputs, rotation speed of fan control signal output, digital quantity input port DI comprisesBlower fan start and stop status signal input, manual auto state signal input part, failure alarm signal input, digital quantity is defeatedOutbound port DO comprises blower fan on off control signal output part, manually automatic changeover control signal output.
Be connected with fault alarm 6 at the output of controller 3, controller 3 has feedback information processing unit, controlsThe rotation speed of fan feedback signal of the feedback information processing unit of device 3 to air processing machine 1, the open degree feedback of dynamoelectric water valve 2Signal carries out analyzing and processing, form alarm signal output to the alarm signal input of fault alarm 6, with driving malfunctionAlarm 6 is reported to the police.
Signal processing unit has PID calculation process module, and this PID calculation process module is to air output sensor 5Air output feedback signal and setting air output signal are processed and are formed air quantity difference signal, and controller 3 is by the poor letter of air quantityNumber control the aperture of dynamoelectric water valve 2.
The blower fan of air processing machine 1 is the adjustable direct current brushless motor of air quantity or frequency conversion fan, and dynamoelectric water valve 2 is for passing throughThe signal of telecommunication changes motorized adjustment two water-through valves of valve opening, inputs respectively wind by the operation push-button region of control panel 4Machine start stop signal, manually auto state switching signal, and the blower fan start stop signal input of delivery controller 3 and certainly manualMoving state switching signal input.
Air output sensor 5 is made up of pressure sensor. The output of controller 3 is connected with fault alarm 6.
Described mixed wind unit mixes for new wind and return air, and described filter element is for filtered air particle, described in addWet unit is for increasing air humidity, and air processing machine 1 internal element structure is followed successively by return air unit, mixed wind unit, mistakeFilter unit, refrigeration unit, heating unit, humidifying unit, blowing unit.
Described display screen shows current indoor temperature and/or design temperature and/or air processing machine start and stop state and/or air quantitySize; Described controller 3 and control panel 4 are electrically connected by RS485 interface.
Air processing machine 1 adopts the air processing machine of routine techniques, and dynamoelectric water valve 2 adopts motorized adjustment in routine techniquesWater valve, controller 3 adopts field controller or the singlechip controller of routine techniques, and control panel 4 adopts routine techniquesDisplay screen with several function signal input keys forms.
In the present embodiment:
In the signal processing unit that table one is controller, air output accounts for ratio and the spacing relation of water valve aperture of maximum quantity of wind;
When indoor temperature setting value is 23 degree. The nominal air delivery of air processing machine is 20000m3/h, and specified cold is120KW。
According to room load situation, air conditioning water system situation and water valve hydraulic characteristic(s) etc., air output is set and water valve leavesSpend spacing relation as following table.
Table one
| Air output accounts for the ratio (%) of maximum quantity of wind | Water valve aperture spacing (%) |
| 90-100 | 100 |
| 66-90 | 75 |
| 33-66 | 50 |
| 10-33 | 25 |
| 0-10 | 5 |
| 0 | 0 |
The spacing ratio setting that accounts for maximum quantity of wind according to air output of water valve aperture. According to current return air temperature and room temperatureThe deviation of setting value, utilize after PID calculation process, send to two water-through valves using operation result as control signalMechanism, makes it carry out synchronization action, controls indoor temperature.
The operation principle of the present embodiment is as follows:
Blower fan in air processing machine is frequency conversion fan, thereby makes air quantity adjustable. Blower fan is from indoor return air, and return air is through emptyAfter the heat exchange coil heat exchange of the heating unit in gas disposal machine, send into indoor. The frequency conversion fan static pressure of air processing machine is generally100-600Pa。
Dynamoelectric water valve 2 is electric control valve, can change by the signal of telecommunication aperture of valve, and then the stream of control valveLogical ability, controls the water yield that enters heat exchange coil. In practical application, can flow be set at the water outlet of dynamoelectric water valveDetection head, is detected the flow of dynamoelectric water valve and is delivered to the flow feedback input end of controller 3 by flow detection head, by controllingDevice processed judges the aperture of dynamoelectric water valve 2 according to flow.
Control panel 4 has display screen and operation push-button, by display screen and coordinating of operation push-button inputting room temperatureThe setting value, air output size of degree be to the memory cell of controller, display screen can show current indoor temperature, design temperature,The information such as air processing machine start and stop state, air force. Controller has multiple input I and output O port. Wherein,Analog input AI mouth comprises return air temperature signal input part, open degree feedback signal input part, rotation speed of fan signal feedbackInput; Analog output AO mouth comprises two water-through valve aperture control output ends, rotation speed of fan control signal output;Digital quantity input DI mouth comprises blower fan start stop signal input, manual auto state switching signal input; Digital quantity is defeatedGo out DO mouth and comprise blower fan start stop signal output, alarm signal output ends.
I/O between control panel 4 and controller 3 can directly connect or connect by RS485 communication interface.Return air temperature is measured and is transferred to controller by return air temperature sensor.
When actual use, according to the air output setting value of current artificial setting, the signal processing unit of controller 3 calculatesDraw the spacing value of dynamoelectric water valve 2 maximum opening, make the aperture of dynamoelectric water valve 2 under current air output be not more than this electric waterValve 2 maximum openings are spacing. According to the deviate of the setting value of current return air temperature and room temperature, utilize signal processingAfter the PID calculation process resume module of inside, unit, send to dynamoelectric water valve 2 using operation result as control signalControl input end, thereby the discharge of control dynamoelectric water valve 2. Realize air output control discharge, finally control Indoor TemperatureThe object of degree.
The temperature signal of return air temperature sensor stores the internal storage unit of controller 3 into; The rotation speed of fan of controller 3Control signal output connects the control signal input of frequency conversion fan, and the blower fan start stop signal output of controller 3 connectsThe blower fan start stop signal input of frequency conversion fan; The signal processing unit of controller 3 imports the air output of internal storage unitSignal, draws dynamoelectric water valve 2 maximum opening limit signals after processing; The PID calculation process of signal processing unit insideModule is processed formation temperature signal to temperature signal and room design temperature signal, and temperature signal and maximum opening are spacingSignal is controlled the aperture of dynamoelectric water valve 2 by the dynamoelectric water valve aperture control output end of controller 3; Controller 3 manuallyAuto state switching signal output connects the manual auto state switching signal input of frequency conversion fan.
The actual use of applicant shows:
Air processing machine supplies, backwater temperature difference is certain, and supply water temperature is higher, and refrigerating capacity amount of decrease is larger, and dehumidifying effect declines.Air-treatment fan delivery is certain, and supply water temperature is certain, and when output changes, refrigerating capacity changes with the variation of output,According to part air processing machine properties of product statistics, when supply water temperature is 7 DEG C, when output reduces to 80%, refrigerating capacityFor 92% original left and right, illustrate in the time that output changes comparatively slow on the impact of refrigerating capacity.
Air processing machine supplies, backwater temperature difference is certain, and when supply water temperature raises, refrigerating capacity, along with minimizing, according to statistics, supplies waterTemperature raises 1 DEG C time, and refrigerating capacity reduces by 10% left and right, and supply water temperature is higher, and amount of decrease is larger, and dehumidifying effect declines.
Water supply conditions is certain, and when air-treatment fan delivery changes, refrigerating capacity and air-treatment enthalpy difference, along with variation, are generallyRefrigerating capacity reduces, and enthalpy difference increases, and the power consumption of specific refrigerating effect blower fan changes little.
When the air processing machine water-in and water-out temperature difference increases, discharge reduction, the heat transfer coefficient of heat exchange coil is along with reducing. In addition,Also there is variation in heat transfer temperature difference, therefore, the refrigerating capacity of air processing machine reduces with the increase of supply backwater temperature difference, according to systemIt is 7 DEG C that meter is worked as supply water temperature, and when confession, backwater temperature difference are brought up to 7 DEG C from 5 DEG C, refrigerating capacity can reduce by 17% left and right.
Thermal environment condition refers to the comprehensive function that physical parameter occurs the thermal comfort of human body. Main in these physical parametersComprise the relative humidity of air dry-bulb temperature, air, the metabolism amount of speed air flow, mean radiant temperature, human bodyAnd six of clothing etc. Wherein, the temperature of air and flowing velocity are that comfortable of the thermal environment that provides of air processing machine is providedThe important parameter of part.
Specific embodiment 2:
The present embodiment compared with specific embodiment 1, the air processing machine temperature control spacing according to air output control water valve apertureThe structure of device processed is identical, except air output in the signal processing unit of controller accounts for ratio and the water valve aperture of maximum quantity of windThe spacing relation outside difference, this relation as:
Indoor temperature setting value is 23 degree, and the nominal air delivery of air processing machine is 20000m3/h, and specified cold is120KW。
According to room load situation, air conditioning water system situation and water valve hydraulic characteristic(s) etc., air output is set and water valve leavesSpend spacing relation as shown in the formula (ratio that note air output accounts for nominal air delivery is M, and water valve aperture is spacing is X, thus MBe 0～1 with the span of X):
X＝M2.5
The spacing ratio-dependent that is accounted for maximum quantity of wind according to above formula by air output of water valve aperture. According to current return air temperature and roomBetween the deviation of setting value of temperature, utilize after PID calculation process, operation result is sent to two-way as control signalThe mechanism of water valve, makes it carry out synchronization action, controls indoor temperature.
The above, be only preferably specific embodiment of the present invention, but protection scope of the present invention is not limited to this, anyBe familiar with, in scope that this technical staff discloses in the present invention, being equal to and replacing according to technical solution of the present invention and inventive concept thereofChange or change, all belonging to protection scope of the present invention. In the present invention, do not have the content of concrete explanation to be the existing skill in this areaArt scope.
Claims (10)
1. according to the spacing air processing machine temperature control equipment of air output control water valve aperture, comprise air processing machine (1),Dynamoelectric water valve (2), controller (3) and control panel (4), air processing machine is provided with blower fan in (1); It is characterized in that: at skyIn the air-supply passage of gas disposal machine (1), be provided with air output sensor (5), air processing machine (1) has return air unit, mixed windUnit, filter element, refrigeration unit, heating unit, humidifying unit and blowing unit, controller (3) has signal placeReason unit and feedback information processing unit and several input end of analog signal, several analog signal outputs, someIndividual digital signal input end and several digital signal output ends; Air output sensor (5) has air volume test head and air quantitySignal output part, control panel (4) has display screen and operation push-button, and operation push-button is as manual ringing input,The setting value of input room temperature, the spacing value of dynamoelectric water valve (2) aperture; The signal output part of control panel (4) connects controlThe signal input part of device processed (3), it is anti-that the air volume signal output of air output sensor (5) connects the air output of controller (3)Feedback signal input, it is anti-that the rotation speed of fan feedback signal output of air processing machine (1) connects the rotation speed of fan of controller (3)Feedback signal input, the open degree feedback signal output part of dynamoelectric water valve (2) connects the open degree feedback signal input of controller (3)End; Controller (3) contrasts the air output feedback signal of air output sensor (5) with setting air output signal, outputThe aperture control signal of dynamoelectric water valve (2), with the aperture of controlling dynamoelectric water valve (2) in the aperture of setting is spacing, shapeBecome the air processing machine temperature control structure spacing according to air output control water valve aperture.
2. the air processing machine temperature control dress spacing according to air output control water valve aperture according to claim 1Put, it is characterized in that: in the return air channel of air processing machine (1), be provided with return air temperature sensor, return air temperature sensingUtensil has temperature detecting head and temperature signal output, and the temperature signal output of return air temperature sensor connects controller (3)Temperature feedback signal input, controller (3) is according to the deviation of the setting value of current return air temperature and room temperature,Utilize after built-in signal processing unit processes, send to the control of dynamoelectric water valve (2) using result as control signalInput processed, makes it carry out synchronization action, controls indoor temperature.
3. the air processing machine temperature control spacing according to air output control water valve aperture according to claim 1 and 2Device processed, is characterized in that: controller (3) is provided with multiple I/O ports, and wherein, analog input port AI comprisesAir output signal input part, dynamoelectric water valve (2) open degree feedback signal input part, rotation speed of fan feedback signal input,Analog output port AO comprises dynamoelectric water valve (2) aperture control signal output, the output of rotation speed of fan control signalEnd, digital quantity input port DI comprises blower fan start and stop status signal input, manually auto state signal input part, eventBarrier alarm signal input, digital output port DO comprises blower fan on off control signal output part, manually conversion automaticallyControl signal output.
4. the air processing machine temperature control spacing according to air output control water valve aperture according to claim 1 and 2Device processed, is characterized in that: be connected with fault alarm (6) at the output of controller (3), controller (3) has feedbackInformation process unit, the rotation speed of fan feedback signal of the feedback information processing unit of controller (3) to air processing machine (1),The open degree feedback signal of dynamoelectric water valve (2) carries out analyzing and processing, and formation alarm signal outputs to the warning of fault alarm (6)Signal input part, report to the police with driving malfunction alarm (6).
5. the air processing machine temperature control spacing according to air output control water valve aperture according to claim 1 and 2Device processed, is characterized in that: signal processing unit has PID calculation process module, this PID calculation process module pairThe air output feedback signal of air output sensor (5) and setting air output signal are processed and are formed air quantity difference signal, controlDevice (3) is by the aperture of air quantity difference signal control dynamoelectric water valve (2).
6. the air processing machine temperature control spacing according to air output control water valve aperture according to claim 1 and 2Device processed, is characterized in that: the blower fan of air processing machine (1) is the adjustable direct current brushless motor of air quantity or frequency conversion fan,Dynamoelectric water valve (2) is for changing by the signal of telecommunication motorized adjustment two water-through valves of valve opening, by the behaviour of control panel (4)Do key area and input respectively blower fan start stop signal, manually auto state switching signal, and the blower fan of delivery controller (3)Start stop signal input and manually auto state switching signal input.
7. the air processing machine temperature control spacing according to air output control water valve aperture according to claim 1 and 2Device processed, is characterized in that: air output sensor (5) is made up of pressure sensor.
8. the air processing machine temperature control spacing according to air output control water valve aperture according to claim 1 and 2Device processed, is characterized in that: the output of controller (3) is connected with fault alarm (6).
9. the air processing machine temperature control spacing according to air output control water valve aperture according to claim 1 and 2Device processed, is characterized in that: described mixed wind unit mixes for new wind and return air, and described filter element is for filteringAir particles, described humidifying unit is for increasing air humidity, and air processing machine (1) internal element structure is followed successively by return airUnit, mixed wind unit, filter element, refrigeration unit, heating unit, humidifying unit, blowing unit.
10. air processing machine temperature control equipment according to claim 1 and 2, is characterized in that: described demonstrationScreen display is shown current indoor temperature and/or design temperature and/or air processing machine start and stop state and/or air force; Described controlDevice (3) and control panel (4) are electrically connected by RS485 interface.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610112832.1A CN105588209A (en) | 2016-02-28 | 2016-02-28 | Temperature control device controlling opening degree limit of water valve according to supply air volume for air processor |
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| CN201610112832.1A CN105588209A (en) | 2016-02-28 | 2016-02-28 | Temperature control device controlling opening degree limit of water valve according to supply air volume for air processor |
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| CN201610112832.1A Pending CN105588209A (en) | 2016-02-28 | 2016-02-28 | Temperature control device controlling opening degree limit of water valve according to supply air volume for air processor |
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