CN105737339A - Fan coil temperature control device capable of controlling opening limit range of water valve according to return air temperature - Google Patents
Fan coil temperature control device capable of controlling opening limit range of water valve according to return air temperature Download PDFInfo
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- CN105737339A CN105737339A CN201610112961.0A CN201610112961A CN105737339A CN 105737339 A CN105737339 A CN 105737339A CN 201610112961 A CN201610112961 A CN 201610112961A CN 105737339 A CN105737339 A CN 105737339A
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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
- 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
- F24F11/70—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
- 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
- F24F11/62—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
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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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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- 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 relates to a fan coil temperature control device capable of controlling the opening limit range of a water valve according to return air temperature. The fan coil temperature control device comprises a fan coil, an electric water valve, a controller and a control panel, and is characterized in that a return air temperature sensor is arranged in a return air passage of the fan coil; the controller is provided with a signal processing unit, a feedback information processing unit, a plurality of analog signal input ends, a plurality of analog signal output ends, a plurality of digital signal input ends and a plurality of digital signal output ends; the return air temperature sensor is provided with a temperature measuring head and a temperature signal output end; the control panel is provided with a display screen and operation buttons; the temperature signal output end of the return air temperature sensor is connected with the return air temperature feedback information input end of the controller; the controller outputs opening control signals of the electric water valve so as to control the opening of the electric water valve in a preset opening limit range; and the fan coil temperature control structure capable of controlling the opening limit range of the water valve according to the return air temperature is formed. The fan coil temperature control device has the beneficial effects that the efficiency is high; energy and time are saved; and the precision is high.
Description
Technical field
The present invention relates to a kind of temperature control equipment, especially relate to a kind of fan coil temperature control equipment controlling water valve check according to return air temperature.Belong to HVAC technical field.
Background technology
Fan coil is the end prod of central air-conditioning, it is made up of heat exchanger, water pipe, filter, fan, drip tray, air bleeding valve and support etc., its operation principle is the air in constantly room, recirculation place in unit, it is cooled (heating) after bypassing air through cold water (hot water) coil pipe, to keep the constant of room temperature.
Along with the development of fan coil technology, the field of utilization also becomes big therewith, is now mainly used in some places such as office, hospital, scientific research institution.Fan coil, mainly by the positive action relying on blower fan, is got a desired effect by the effect of surface cooler.
In prior art, the ruuning situation of system is had a great impact by the end heat exchange property of central air-conditioning system.General fan coil, air quantity can artificially regulate, and water route adopts electrodynamic valve to carry out break-make control.When air intake parameter is fixed, and air quantity is design air flow, only when the water yield and cold are design conditions, import and export the temperature difference and be only designed temperature difference.If discharge reduction, then cold reduces, and import and export the temperature difference can more than designed temperature difference simultaneously.If the water yield is excessive, then importing and exporting the temperature difference can less than designed temperature difference.When air output is less, coil heat exchange ability declines, and water effluent amount should reduce, and can cause the super stream of the water yield, the problem reducing the system heat-exchanging water temperature difference equally.By the restriction of the exchange capability of heat of fan coil, when return air temperature is relatively low, owing to heat transfer temperature difference is little, water effluent amount should reduce, and otherwise can cause the super stream of the water yield, reduce the heat-exchanging water temperature difference of this fan coil.Therefore, when different return water temperatures, the maximum opening of reply water valve limits to some extent.
Therefore, when air output or return air temperature difference, the aperture of water valve should be limited to some extent.For central air-conditioning system of the prior art, for making heat exchange conformance with standard reach hydraulically balanced effect simultaneously, it is to avoid " big flow, the little temperature difference ".
, owing to being not provided with controlling water valve check structure according to return air temperature, there is following aspect problem: (1) is for avoiding " big flow, the little temperature difference ", it is necessary to manually adjust air quantity and the water yield in the fan coil of prior art, efficiency is low, take time and effort.(2) manual adjustment easily produces personal error, and precision is low.For this, need a kind of fan coil temperature control equipment controlling water valve check according to return air temperature of design, have, make the actual temperature difference of operation of end of air conditioning water system more than designed temperature difference while providing the heat exchange amount needed, avoid the phenomenon of " big flow; the little temperature difference ", it is ensured that the feature of the energy-conservation and comfortableness of air conditioning system.
Summary of the invention
The purpose of the present invention, it is manually adjust air quantity and the water yield to solve the fan coil of prior art, deposit that efficiency is low, take time and effort and personal error, problem that precision is low, it is provided that a kind of fan coil temperature control equipment controlling water valve check according to return air temperature.Have the advantages that to avoid " big flow, the little temperature difference " phenomenon, efficiency height, energy-and time-economizing and precision high.
The purpose of the present invention can reach by following technical solution:
Control the fan coil temperature control equipment of water valve check according to return air temperature, including fan coil, dynamoelectric water valve, controller and control panel, fan coil is provided with blower fan；Its construction features is in that: be provided with return air temperature sensor in the return air channel of fan coil, and controller has signal processing unit and feedback information processing unit and several input end of analog signal, several analog signal outputs, several digital signal input ends and several digital signal output ends；Return air temperature sensor has temperature measuring head and temperature signal outfan, and control panel has display screen and operation button, and operation button, as manual ringing input, inputs the spacing value of the setting value of room temperature, dynamoelectric water valve aperture；The signal output part of control panel connects the signal input part of controller, the temperature signal outfan of return air temperature sensor connects the return air temperature feedback signal input terminal of controller, the rotation speed of fan feedback signal output of fan coil connects the rotation speed of fan feedback signal input terminal of controller, and the open degree feedback signal output part of dynamoelectric water valve connects the open degree feedback signal input part of controller；The return air temperature feedback signal of return air temperature sensor and design temperature signal are contrasted by controller, the opening control signal of output dynamoelectric water valve, to control the aperture of dynamoelectric water valve in the check set, form the fan coil temperature control system controlling water valve check according to return air temperature.
The purpose of the present invention can also reach by following technical solution:
Further, controller is provided with multiple I/O port, wherein, analog input port AI includes return air temperature signal input part, dynamoelectric water valve open degree feedback signal input part, rotation speed of fan feedback signal input terminal, analog output port AO includes dynamoelectric water valve opening control signal outfan, rotation speed of fan control signal outfan, digital quantity input port DI includes blower fan start and stop state signal input terminal, manual auto state signal input part, failure alarm signal input, digital output port DO includes blower fan on off control signal output part, manually automatic changeover control signal outfan.
Further, outfan at controller is connected to fault alarm, controller has feedback information processing unit, the feedback information processing unit of controller the open degree feedback signal of the rotation speed of fan feedback signal of fan coil, dynamoelectric water valve is analyzed process, formed alarm signal export the alarm signal input of fault alarm, with driving malfunction alarm equipment alarm.
Further, signal processing unit has PID arithmetic processing module, and temperature feedback signal and the design temperature signal of return air temperature sensor are carried out process and form temperature signal by this PID arithmetic processing module, and controller controls the aperture of dynamoelectric water valve by temperature signal.
Further, the blower fan of fan coil is the adjustable direct current brushless motor of air quantity or frequency conversion fan, dynamoelectric water valve is can pass through the signal of telecommunication to change motorized adjustment two water-through valve of valve opening, blower fan start stop signal, manual auto state conversion signal the blower fan start stop signal input of delivery controller and manual auto state changing over signal inputs is inputted respectively by the operation key area of control panel.
Further, described display screen shows current indoor temperature and/or design temperature and/or air processing machine start and stop state and/or air force.
Further, described controller and control panel are electrically connected by RS485 interface.
The present invention has following prominent beneficial effect:
1, the present invention utilizes operation button as manual ringing input, inputs the spacing value of the setting value of room temperature, dynamoelectric water valve aperture；The signal output part of control panel connects the signal input part of controller, the temperature signal outfan of return air temperature sensor connects the return air temperature feedback signal input terminal of controller, the rotation speed of fan feedback signal output of fan coil connects the rotation speed of fan feedback signal input terminal of controller, and the open degree feedback signal output part of dynamoelectric water valve connects the open degree feedback signal input part of controller；The return air temperature feedback signal of return air temperature sensor and design temperature signal are contrasted by controller, the opening control signal of output dynamoelectric water valve, to control the aperture of dynamoelectric water valve in the check set, form the fan coil temperature control system controlling water valve check according to return air temperature；Therefore, it is possible to the fan coil solving prior art manually adjusts air quantity and the water yield, deposit that efficiency is low, take time and effort and personal error, problem that precision is low, it is to avoid " big flow, the little temperature difference " phenomenon；There is the beneficial effect that efficiency height, energy-and time-economizing and precision are high.
2, due to the fact that its operating mode consistently achieves the scope of desirable operating point, run its effect under power be optimum efficiency and the needs according to user arbitrarily regulate identical, both significantly ensured the energy-saving effect of air conditioning system, and can allow again user more comfortableness.Display screen can show current indoor temperature and/or design temperature and/or air processing machine start and stop state and/or air force, reaches the effect of monitoring treatment effect and control in real time in real time.Controller and control panel can be connected by RS485 interface, are suitable for different workpiece requirements.Controller has the signal instruction that can be operated by key area and controls the function of conversion between frequency conversion fan manual mode and auto state, and the air output for this fan coil both can be controlled manually controlling by controller.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the specific embodiment of the invention 1.
The signal that Fig. 2 is the specific embodiment of the invention 1 moves towards schematic diagram.
Detailed description of the invention
The detailed description of the invention of invention is further illustrated below in conjunction with the embodiment of accompanying drawing.
Specific embodiment 1:
Seeing figures.1.and.2, the present embodiment includes fan coil 1, dynamoelectric water valve 2, controller 3 and control panel 4, is provided with blower fan in fan coil 1；Being provided with return air temperature sensor 5 in the return air channel of fan coil 1, controller 3 has signal processing unit and feedback information processing unit and several input end of analog signal, several analog signal outputs, several digital signal input ends and several digital signal output ends；Return air temperature sensor 5 has temperature measuring head and temperature signal outfan, and control panel 4 has display screen and operation button, and operation button, as manual ringing input, inputs the spacing value of the setting value of room temperature, dynamoelectric water valve 2 aperture；The signal output part of control panel 4 connects the signal input part of controller 3, the temperature signal outfan of return air temperature sensor 5 connects the return air temperature feedback signal input terminal of controller 3, the rotation speed of fan feedback signal output of fan coil 1 connects the rotation speed of fan feedback signal input terminal of controller 3, and the open degree feedback signal output part of dynamoelectric water valve 2 connects the open degree feedback signal input part of controller 3；The return air temperature feedback signal of return air temperature sensor 5 and design temperature signal are contrasted by controller 3, the opening control signal of output dynamoelectric water valve 2, to control the aperture of dynamoelectric water valve 2 in the check set, form the fan coil temperature control system controlling water valve check according to return air temperature.
In the present embodiment:
Controller 3 is provided with multiple I/O port, wherein, analog input port AI includes return air temperature signal input part, dynamoelectric water valve 2 open degree feedback signal input part, rotation speed of fan feedback signal input terminal, analog output port AO includes dynamoelectric water valve 2 opening control signal outfan, rotation speed of fan control signal outfan, digital quantity input port DI includes blower fan start and stop state signal input terminal, manual auto state signal input part, failure alarm signal input, digital output port DO includes blower fan on off control signal output part, manually automatic changeover control signal outfan.
Outfan at controller 3 is connected to fault alarm 6, controller 3 has feedback information processing unit, the open degree feedback signal of the rotation speed of fan feedback signal of fan coil 1, dynamoelectric water valve 2 is analyzed processing by the feedback information processing unit of controller 3, forms alarm signal and exports the alarm signal input of fault alarm 6, reports to the police with driving malfunction alarm 6.
Signal processing unit has PID arithmetic processing module, and temperature feedback signal and the design temperature signal of return air temperature sensor 5 are carried out process and form temperature signal by this PID arithmetic processing module, and controller 3 controls the aperture of dynamoelectric water valve 2 by temperature signal.
The blower fan of fan coil 1 is the adjustable direct current brushless motor of air quantity or frequency conversion fan, dynamoelectric water valve 2 is can pass through the signal of telecommunication to change motorized adjustment two water-through valve of valve opening, blower fan start stop signal, manual auto state conversion signal the blower fan start stop signal input of delivery controller 3 and manual auto state changing over signal inputs is inputted respectively by the operation key area of control panel 4.
Fan coil 1 adopts the fan coil of routine techniques, dynamoelectric water valve 2 adopts motorized adjustment water valve in routine techniques, controller 3 adopts field controller or the singlechip controller of routine techniques, and control panel 4 adopts the display screen of several function signal input keys of routine techniques band to constitute.
Described display screen shows current indoor temperature and/or design temperature and/or air processing machine start and stop state and/or air force.Described controller 3 and control panel 4 are electrically connected by RS485 interface.
When indoor temperature setting value is 25 degree, the detected value of return air temperature is 29 degree, and fan coil model is FC800, and under GB operating mode, during middle-grade air quantity, cold is 6550W, and heat is 9260W.
Table one is absolute value of the bias and the water valve check relation table of return air temperature, design temperature.
According to following table one, owing to the absolute value of return air temperature Yu the deviation of design temperature is 4 DEG C, set water valve check now as 75%.
Table one
| The absolute value (DEG C) of the deviation of return air temperature and design temperature | Water valve check (%) |
| 0-1 | 25 |
| 1-2 | 50 |
| 3-5 | 75 |
| ≥5 | 100 |
The operation principle of the present embodiment is as follows:
With reference to Fig. 2, the blower fan in fan coil 1 is the adjustable direct current brushless motor of air quantity or frequency conversion fan, thus air quantity is adjustable.Blower fan is return air indoor, sends into indoor after return air heat exchange coil heat exchange in fan coil 1.The fan static pressure of fan coil 1 is generally 10-50Pa, less than 100Pa.
Dynamoelectric water valve 2 is electric control valve, can be changed the aperture of valve and then the negotiability of control valve by the signal of telecommunication, controls to enter the water yield of heat exchange coil.In practical application, it is possible to the water outlet at dynamoelectric water valve arranges flow detection head, detect the flow of dynamoelectric water valve by flow detection head and deliver to the flow feedback input of controller 3, controller judging the aperture of dynamoelectric water valve 2 according to flow.
Control panel 4 has display screen and operation button, can inputting the setting value of room temperature, air output size to the memory element of controller by display screen with coordinating of operation button, display screen can show the information such as current indoor temperature, design temperature, air processing machine start and stop state, air force.Controller has multiple input I and output O port.Wherein, analog input AI mouth includes return air temperature signal input part, open degree feedback signal input part, rotation speed of fan signal feedback input end；Analog output AO mouth includes two water-through valve aperture control output ends, rotation speed of fan control signal outfan；Digital quantity input DI mouth includes blower fan start stop signal input, manual auto state changing over signal inputs；Digital output DO mouth includes blower fan start stop signal outfan, alarm signal output ends.Input/output between control panel and controller can be directly connected to or be connected by RS485 communication interface.Return air temperature is measured by return air temperature sensor and transmits to controller.
Controller 3 has signal processing unit, and signal processing unit is connected with internal storage unit signal, and signal processing unit imports the temperature signal of internal storage unit, draws two water-through valve maximum opening limit signals after process；Temperature signal and room design temperature signal are carried out process formation temperature signal, temperature signal and maximum opening limit signal and are connected the aperture control input of two water-through valves by two water-through valve aperture control output ends of controller by the PID arithmetic processing module within signal processing unit；Temperature signal is by the air-blower control signal input part of the air-blower control signal output part connecting fan coil pipe of controller, so that temperature signal controls two water-through valves, temperature signal controls the air output of fan coil.
The rotation speed of fan feedback signal output of fan coil connects the rotation speed of fan feedback signal input terminal of controller, and the open degree feedback signal output part of two water-through valves connects the open degree feedback signal input part of controller；The rotation speed of fan feedback signal of fan coil, two water-through valves open degree feedback signal transmission to the feedback information processing unit of controller be analyzed processing, connected the alarm signal input of fault alarm after forming alarm signal or non-alarm signal by the alarm signal output ends of controller.Two water-through valves, fan coil rotating speed working condition can be analyzed by immediate feedback to the feedback information processing unit of controller, two water-through valve apertures, the frequency conversion fan rotating speed practically necessary with in the middle of signal processing unit compare, as misfitted, send alarm signal to fault alarm, non-alarm signal is then sent to fault alarm as coincideing, reach the effect of at-once monitor immediate feedback instant alarming, it is to avoid security incident occurs.
Applicant is actually used to be shown:
Fan coil supplies, backwater temperature difference is certain, and supply water temperature is more high, and refrigerating capacity amount of decrease is more big, and dehumidifying effect declines.Fan coil air quantity is certain, supply water temperature is certain, during output change, refrigerating capacity changes with the change of output, add up according to part fan coil pipe properties of product, when supply water temperature is 7 DEG C, and output reduces to 80%, refrigerating capacity is original about 92%, illustrates when output changes the impact of refrigerating capacity is comparatively slow.
Fan coil supplies, backwater temperature difference is certain, and when supply water temperature raises, refrigerating capacity is along with minimizing, and according to statistics, when supply water temperature raises 1 DEG C, refrigerating capacity reduces about 10%, and supply water temperature is more high, and amount of decrease is more big, dehumidifying effect decline.
Water supply conditions is certain, and when fan coil air quantity changes, refrigerating capacity and air-treatment enthalpy difference, along with change, are usually refrigerating capacity and reduce, and enthalpy difference increases, and specific refrigerating effect blower fan power consumption change is little.
When the fan coil water-in and water-out temperature difference increases, discharge reduction, the heat transfer coefficient of heat exchange coil is along with reduction.It addition, heat transfer temperature difference also there occurs change, therefore, the refrigerating capacity of fan coil reduces with the increase of supply backwater temperature difference, according to statistics when supply water temperature is 7 DEG C, for, backwater temperature difference from 5 DEG C bring up to 7 DEG C time, refrigerating capacity can reduce about 17%.
Thermal environment condition refers to the comprehensive function that the thermal comfort of human body is occurred by physical parameter.These physical parameters mainly include the relative humidity of air dry-bulb temperature, air, speed air flow, mean radiant temperature, human body metabolism amount and clothing etc. six.Wherein, the temperature of air and flowing velocity are to evaluate the important parameter of the thermal environment comfort conditions that fan coil provides.
Specific embodiment 2:
The present embodiment is except the absolute value of the bias of return air temperature, design temperature is different from water valve check relation and specific embodiment 1, and remainder is identical with specific embodiment 1.
Table two is absolute value of the bias and the water valve check relation table of return air temperature, design temperature.
When indoor temperature setting value is 23 degree.The detected value of return air temperature is 30 degree.Fan coil model is FC600, and under GB operating mode, during middle-grade air quantity, cold is 4850W, and heat is 6850W.
According to table two, owing to the absolute value of return air temperature Yu the deviation of design temperature is 7 DEG C, set water valve check now as 80%.
Table two
| The absolute value (DEG C) of the deviation of return air temperature and design temperature | Water valve check (%) |
| 0-1.5 | 20 |
| 1.5-3.5 | 40 |
| 3.5-5.5 | 60 |
| 5.5-7.5 | 80 |
| ≥7.5 | 100 |
Two water-through valves are controlled by the present invention by the return air temperature signal of return air temperature sensor, room design temperature signal, and return air temperature signal controls the air output of fan coil simultaneously；The end making air conditioning water system while providing the heat exchange amount needed runs the actual temperature difference more than designed temperature difference, phenomenon, it is ensured that the energy-conservation and comfortableness of air conditioning system.
The above; it is only the present invention preferably specific embodiment; but protection scope of the present invention is not limited thereto; any those familiar with the art is in the scope that the invention discloses; it is equal to replacement according to technical scheme and design thereof or is changed, being broadly fallen into protection scope of the present invention.
Claims (7)
1. the fan coil temperature control equipment of water valve check is controlled according to return air temperature, including fan coil (1), dynamoelectric water valve (2), controller (3) and control panel (4), fan coil is provided with blower fan in (1)；It is characterized in that: be provided with return air temperature sensor (5) in the return air channel of fan coil (1), controller (3) has signal processing unit and feedback information processing unit and several input end of analog signal, several analog signal outputs, several digital signal input ends and several digital signal output ends；Return air temperature sensor (5) has temperature measuring head and temperature signal outfan, control panel (4) has display screen and operation button, operation button, as manual ringing input, inputs the spacing value of the setting value of room temperature, dynamoelectric water valve (2) aperture；The signal output part of control panel (4) connects the signal input part of controller (3), the temperature signal outfan of return air temperature sensor (5) connects the return air temperature feedback signal input terminal of controller (3), the rotation speed of fan feedback signal output of fan coil (1) connects the rotation speed of fan feedback signal input terminal of controller (3), and the open degree feedback signal output part of dynamoelectric water valve (2) connects the open degree feedback signal input part of controller (3)；The return air temperature feedback signal of return air temperature sensor (5) and design temperature signal are contrasted by controller (3), the opening control signal of output dynamoelectric water valve (2), to control the aperture of dynamoelectric water valve (2) in the check set, form the fan coil temperature control system controlling water valve check according to return air temperature.
2. fan coil temperature control equipment according to claim 1, it is characterized in that: controller (3) is provided with multiple I/O port, wherein, analog input port AI includes return air temperature signal input part, dynamoelectric water valve (2) open degree feedback signal input part, rotation speed of fan feedback signal input terminal, analog output port AO includes dynamoelectric water valve (2) opening control signal outfan, rotation speed of fan control signal outfan, digital quantity input port DI includes blower fan start and stop state signal input terminal, manual auto state signal input part, failure alarm signal input, digital output port DO includes blower fan on off control signal output part, manually automatic changeover control signal outfan.
3. fan coil temperature control equipment according to claim 1, it is characterized in that: the outfan at controller (3) is connected to fault alarm (6), controller (3) has feedback information processing unit, the open degree feedback signal of the rotation speed of fan feedback signal of fan coil (1), dynamoelectric water valve (2) is analyzed processing by the feedback information processing unit of controller (3), forms alarm signal and exports the alarm signal input of fault alarm (6), reports to the police with driving malfunction alarm (6).
4. fan coil temperature control equipment according to claim 1, it is characterized in that: signal processing unit has PID arithmetic processing module, temperature feedback signal and the design temperature signal of return air temperature sensor (5) are carried out process and form temperature signal by this PID arithmetic processing module, and controller (3) controls the aperture of dynamoelectric water valve (2) by temperature signal.
5. fan coil temperature control equipment according to claim 1, it is characterized in that: the blower fan of fan coil (1) is the adjustable direct current brushless motor of air quantity or frequency conversion fan, dynamoelectric water valve (2) is can pass through the signal of telecommunication to change motorized adjustment two water-through valve of valve opening, blower fan start stop signal, manual auto state conversion signal the blower fan start stop signal input of delivery controller (3) and manual auto state changing over signal inputs is inputted respectively by the operation key area of control panel (4).
6. fan coil temperature control equipment according to claim 1, it is characterised in that: described display screen shows current indoor temperature and/or design temperature and/or air processing machine start and stop state and/or air force.
7. the fan coil temperature control equipment according to claim 1 to 6 any one, it is characterised in that: described controller (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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| CN201610112961.0A CN105737339A (en) | 2016-02-28 | 2016-02-28 | Fan coil temperature control device capable of controlling opening limit range of water valve according to return air temperature |
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| CN201610112961.0A CN105737339A (en) | 2016-02-28 | 2016-02-28 | Fan coil temperature control device capable of controlling opening limit range of water valve according to return air temperature |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110657548A (en) * | 2019-10-14 | 2020-01-07 | 珠海格力电器股份有限公司 | Temperature controller, fan coil air conditioning system and control method thereof |
| CN110686378A (en) * | 2019-09-29 | 2020-01-14 | 珠海格力电器股份有限公司 | Fan coil adjusting device, fan coil and adjusting method thereof |
| CN112594807A (en) * | 2020-11-19 | 2021-04-02 | 苏州浪潮智能科技有限公司 | Chilled water machine room air conditioning unit and control method thereof |
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| CN110686378B (en) * | 2019-09-29 | 2020-09-22 | 珠海格力电器股份有限公司 | Fan coil adjusting device, fan coil and adjusting method thereof |
| CN110657548A (en) * | 2019-10-14 | 2020-01-07 | 珠海格力电器股份有限公司 | Temperature controller, fan coil air conditioning system and control method thereof |
| CN110657548B (en) * | 2019-10-14 | 2023-07-28 | 珠海格力电器股份有限公司 | Temperature controller, fan coil air conditioning system and control method of fan coil air conditioning system |
| CN112594807A (en) * | 2020-11-19 | 2021-04-02 | 苏州浪潮智能科技有限公司 | Chilled water machine room air conditioning unit and control method thereof |
| CN112594807B (en) * | 2020-11-19 | 2022-12-27 | 苏州浪潮智能科技有限公司 | Chilled water machine room air conditioning unit and control method thereof |
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