CN107355954A - A kind of all-fresh air thermostatic constant wet control system and method - Google Patents

A kind of all-fresh air thermostatic constant wet control system and method Download PDF

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Publication number
CN107355954A
CN107355954A CN201710659251.4A CN201710659251A CN107355954A CN 107355954 A CN107355954 A CN 107355954A CN 201710659251 A CN201710659251 A CN 201710659251A CN 107355954 A CN107355954 A CN 107355954A
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CN
China
Prior art keywords
temperature
fresh air
air
humidity sensor
humidifier
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Pending
Application number
CN201710659251.4A
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Chinese (zh)
Inventor
黄乐之
吴杰生
陈锐群
许思秒
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Shanghai Ji Rong Air Conditioning Technology Co Ltd
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Shanghai Ji Rong Air Conditioning Technology Co Ltd
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Priority to CN201710659251.4A priority Critical patent/CN107355954A/en
Publication of CN107355954A publication Critical patent/CN107355954A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a kind of all-fresh air thermostatic constant wet control system and method, including air conditioner main, fresh air Temperature Humidity Sensor, evaporator surface temperature sensor, air-supply Temperature Humidity Sensor, indoor temperature and humidity sensor, refrigerant dehumidification system, heater, humidifier, pressure fan and control system;Air conditioner main includes housing, compressor and compressor regulating valve;Control system includes PLC;Fresh air Temperature Humidity Sensor is arranged at fresh wind port;Evaporator surface temperature sensor is arranged on refrigerant dehumidification system, and air-supply Temperature Humidity Sensor is arranged at air outlet.The all-fresh air thermostatic constant wet control system and method are reasonable in design, simple in construction, and all-fresh air constant temperature and humidity machine needs to freeze, dehumidifies when putting into operation, will not excessive refrigerated dehumidification, heating, humidification do not put into operation substantially;Control accuracy is high;3rd, save, good economy performance.

Description

A kind of all-fresh air thermostatic constant wet control system and method
Technical field
The present invention relates to air conditioner technical field, specifically a kind of all-fresh air thermostatic constant wet control system and method.
Background technology
Traditional all-fresh air thermostatic and humidistatic air conditioning unit group, its compressor, heater and humidifier, all by indoor temperature and humidity or send Wind-warm syndrome humid control, often occur that compressor input carries out refrigerated dehumidification, heater input heating heating below, humidifier Input humidification, greatly load is canceled out between each other for it, causes the waste of electricity, and cause the ripple of control humiture It is dynamic, it is extremely difficult to higher control accuracy.Therefore, the present invention provides a kind of new all-fresh air thermostatic constant wet control system and side Method.
The content of the invention
It is an object of the invention to provide a kind of all-fresh air thermostatic constant wet control system and method, to solve above-mentioned background skill The problem of being proposed in art.
To achieve the above object, the present invention provides following technical scheme:
A kind of all-fresh air thermostatic constant wet control system, including air conditioner main, fresh air Temperature Humidity Sensor, evaporator surface Temperature sensor, air-supply Temperature Humidity Sensor, indoor temperature and humidity sensor, refrigerant dehumidification system, heater, humidifier, air-supply Machine and control system, the fresh air Temperature Humidity Sensor, evaporator surface temperature sensor, air-supply Temperature Humidity Sensor, interior Temperature Humidity Sensor, refrigerant dehumidification system, heater, humidifier and pressure fan are connected to control system;The air-conditioning owner Body includes housing, compressor and compressor regulating valve;The control system includes PLC;The left end of the housing is provided with Fresh wind port, the right-hand member of housing are provided with air outlet, and fresh air Temperature Humidity Sensor is arranged at fresh wind port;Evaporator surface TEMP Device is arranged on refrigerant dehumidification system, and air-supply Temperature Humidity Sensor is arranged at air outlet;The indoor temperature and humidity sensor is set In in air-conditioned room;The refrigerant dehumidification system, heater, humidifier and pressure fan are installed in enclosure interior, refrigerated dehumidification The right side of system is provided with heater, and the right side of heater is provided with humidifier, and the right side of humidifier is provided with pressure fan, refrigerated dehumidification system System is located at enclosure interior left end, and pressure fan is located at enclosure interior right-hand member.
As the further scheme of the present invention:The refrigerant dehumidification system includes evaporator.
As the further scheme of the present invention:The evaporator surface temperature sensor is located at evaporator fin.
As the further scheme of the present invention:Also include man-machine interface, man-machine interface is connected to PLC.
A kind of all-fresh air constant temperature and humidity control method, comprises the following steps:
User set indoor temperature and humidity, PLC by calculate, draw setting humiture point corresponding to dew-point temperature and Enthalpy, PLC draw fresh air enthalpy by real-time fresh air temperature and humidity value, when fresh air enthalpy is more than setting enthalpy or Indoor Temperature When degree is more than design temperature, start compressor;After compressor start, by the difference control of evaporator surface temperature and dew-point temperature System, Load-unload regulation is carried out, makes evaporator surface temperature infinite approach dew-point temperature or equal to dew-point temperature, works as indoor temperature When being less than setting enthalpy less than design temperature and fresh air enthalpy, compressor is out of service;When indoor temperature is less than design temperature, add Hot device puts into operation, and when indoor temperature is more than design temperature, heater is out of service;When indoor temperature is less than design temperature+control During precision processed, then indoor humidity is judged with setting the difference of humidity, difference is negative value, then humidifier puts into operation;Difference is just Value, then humidifier is out of service.
Compared with prior art, the beneficial effects of the invention are as follows:
The all-fresh air thermostatic constant wet control system and method are reasonable in design, simple in construction, have advantages below:
First, all-fresh air constant temperature and humidity machine needs to freeze, dehumidified when putting into operation, will not excessive refrigerated dehumidification, heating, humidification Substantially do not put into operation;
2nd, control accuracy is high, and the control accuracy of temperature can reach ± 0.5 DEG C, and the control accuracy of humidity can reach ± 3%;
3rd, save, good economy performance, because refrigerant dehumidification system does not offset with heating, humidification system substantially, compressor exists Fresh air enthalpy is less than design temperature not higher than setting enthalpy and fresh air low temperature, and compressor will not error starting.By complete with routine Fresh air constant temperature and humidity machine contrasts, and energy-conservation reaches more than 30%.
Brief description of the drawings
Fig. 1 is all-fresh air thermostatic constant wet control system and the structural representation of method.
Wherein:1- fresh air Temperature Humidity Sensors;2- evaporator surface temperature sensors;3- air-supply Temperature Humidity Sensors;4- Indoor temperature and humidity sensor;5- evaporators;6- heaters;7- humidifiers;8- pressure fan;9- control systems;10- compressors;11- Compressor regulating valve.
Embodiment
The technical scheme of this patent is described in more detail with reference to embodiment.
Referring to Fig. 1, a kind of all-fresh air thermostatic constant wet control system, including air conditioner main, fresh air Temperature Humidity Sensor 1st, evaporator surface temperature sensor 2, air-supply Temperature Humidity Sensor 3, indoor temperature and humidity sensor 4, refrigerant dehumidification system, heating Device 6, humidifier 7, pressure fan 8 and control system 9, the refrigerant dehumidification system include evaporator 5, the fresh air temperature and humidity sensing Device 1, evaporator surface temperature sensor 2, air-supply Temperature Humidity Sensor 3, indoor temperature and humidity sensor 4, evaporator 5, heater 6th, humidifier 7 and pressure fan 8 are connected to control system 9;The air conditioner main includes housing, compressor 10 and located at compression Compressor regulating valve 11 on machine 10;The refrigerant dehumidification system, heater 6, humidifier 7 and pressure fan 8 are installed in housing Inside, the right side of refrigerant dehumidification system are provided with heater 6, and the right side of heater 6 is provided with humidifier 7, and the right side of humidifier 7 is provided with Pressure fan 8, refrigerant dehumidification system are located at enclosure interior left end, and pressure fan 8 is located at enclosure interior right-hand member;The compressor 10 is located at Hull outside;
The control system 9 includes PLC, and it is warm and humid that the plural number input control terminal of PLC connects fresh air respectively Spend sensor 1, evaporator surface temperature sensor 2, air-supply Temperature Humidity Sensor 3 and indoor temperature and humidity sensor 4;PLC is controlled The plural output control terminal of device respectively with compressor electric motor, compressor regulating valve, evaporator 5, heater 6, humidifier 7 and air-supply Machine 8 connects;The realization of the various controls of whole system, completed by the way that PLC is unified;
The left end of the housing is provided with fresh wind port, and the right-hand member of housing is provided with air outlet, and fresh air Temperature Humidity Sensor 1 is arranged on At fresh wind port, for detecting outdoor temperature humidity;Evaporator surface temperature sensor 2 is arranged on evaporator 5, evaporator surface temperature Degree sensor 2 is located at evaporator fin, for detecting the temperature on the surface of evaporator 5;Air-supply Temperature Humidity Sensor 3 is installed At air outlet, for detecting air outlet humiture;The indoor temperature and humidity sensor 4 is in air-conditioned room, for detecting Humiture information in air-conditioned room;System operationally, by fresh air Temperature Humidity Sensor 1, evaporator surface temperature sensor 2nd, air-supply Temperature Humidity Sensor 3 and indoor temperature and humidity sensor 4 gather humiture information, and send information to PLC, Also include man-machine interface, man-machine interface is connected to PLC, and user sets temperature-humidity signal by man-machine interface and controlled to PLC Then device processed, PLC are carried out pair with current actual value by the way that dew-point temperature, setting enthalpy and fresh air enthalpy is calculated Than calculating;PLC is signaled to compressor electric motor, compressor regulating valve, evaporator 5, heater 6, humidifier 7 and sent Blower fan 8, PLC are started or close compressor by series of computation, are compressed machine loading regulation or load out control, Adjust heater, the output quantity of humidifier.
The refrigerant dehumidification system can also be surface cooler system, can also be one-level, two level or multi-stage refrigerating, dehumidifying system System;The heater 6 can be electric heater, steam heater or hot-water heater;Humidifier 7 can be seam humidifier, Electrode humidifier, wet-membrane humidifier, electric heating humidifier or high-pressure atomizing humidifier etc..
A kind of all-fresh air constant temperature and humidity control method, comprises the following steps:
User sets the indoor temperature and humidity needed, and PLC draws dew point corresponding to setting humiture point by calculating Temperature and enthalpy (referred to as setting enthalpy), PLC draws fresh air enthalpy by real-time fresh air temperature and humidity value, works as fresh air enthalpy When being more than design temperature more than setting enthalpy or indoor temperature, start compressor;After compressor start, by evaporator surface temperature Controlled with the difference of dew-point temperature, carry out Load-unload regulation, make evaporator surface temperature infinite approach dew-point temperature or equal to dew Point temperature, when indoor temperature is less than design temperature and fresh air enthalpy is less than setting enthalpy, compressor could be out of service;Work as room Interior temperature is less than design temperature, and heater is in proportion or PID or packet put into operation, when indoor temperature is more than design temperature, adds Hot device in proportion PID or packet it is out of service;When indoor temperature is less than design temperature+control accuracy, then judge indoor wet Degree with setting humidity difference, difference is negative value, then humidifier in proportion PID or packet put into operation;Difference is on the occasion of then Humidifier in proportion PID or packet it is out of service.
The present invention operation principle be:Difference or Indoor Temperature of the entry condition of compressor by fresh air enthalpy and setting enthalpy The difference of degree and design temperature controls.The adjusting condition of compressor is controlled by the difference of evaporator surface temperature and dew-point temperature, The stop condition of compressor is controlled by the difference and fresh air enthalpy and the difference of setting enthalpy of indoor temperature and design temperature.Compression The startup of machine plus unloading and stop the Variable Control that being not quite similar, and the operation of compressor is not by heater, humidifier Influence.The operation of humidifier temperature less than under the precondition of design temperature+control accuracy, just must judge whether to throw indoors Enter operation.Compressor is only responsible for control evaporator surface temperature, and heater, humidifier are only responsible for control indoor temperature and humidity, each control The part division of labor processed is clear and definite.By setting indoor temperature and humidity, setting enthalpy and dew-point temperature are drawn, as long as the surface temperature of evaporator Equal to dew-point temperature, in theory with regard to indoor temperature and humidity control can be made to be avoided to greatest extent in the range of setting temperature and humidity precision While compressor excessively freezes, dehumidified, heater, humidifier supplement input heating and humidification.Indoor Temperature can so be improved The control accuracy of humidity, also saves the energy, reduces the operating cost of unit.Indoor temperature and humidity control can also be changed to humiture of blowing Control, its control principle are identical.Temperature and Humidity Control precision is high, and temperature control precision can reach ± 0.5 DEG C, and humid control precision can Reach ± 3%.Its energy-saving effect is clear and definite, and humiture stability is superior, specific good economic benefit and social benefit.
The all-fresh air thermostatic constant wet control system and method are reasonable in design, simple in construction, have advantages below:
First, all-fresh air constant temperature and humidity machine needs to freeze, dehumidified when putting into operation, will not excessive refrigerated dehumidification, heating, humidification Substantially do not put into operation;
2nd, control accuracy is high, and the control accuracy of temperature can reach ± 0.5 DEG C, and the control accuracy of humidity can reach ± 3%;
3rd, save, good economy performance, because refrigerant dehumidification system does not offset with heating, humidification system substantially, compressor exists Fresh air enthalpy is less than design temperature not higher than setting enthalpy and fresh air low temperature, and compressor will not error starting.By complete with routine Fresh air constant temperature and humidity machine contrasts, and energy-conservation reaches more than 30%.
, it is necessary to illustrate, unless otherwise clear and definite in the description of this all-fresh air thermostatic constant wet control system and method Regulation and limit, term " setting ", " connected " and " connection " should be interpreted broadly, for example, it may be fixedly connected or It is detachably connected, or is integrally connected;Can be joined directly together, can also be indirectly connected by intermediary, can be two The connection of element internal.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood in the present invention In concrete meaning.
The better embodiment of this patent is explained in detail above, but this patent is not limited to above-mentioned embodiment party Formula, can also be on the premise of this patent objective not be departed from one skilled in the relevant art's possessed knowledge Make a variety of changes.

Claims (5)

1. a kind of all-fresh air thermostatic constant wet control system, it is characterised in that including air conditioner main, fresh air Temperature Humidity Sensor (1), evaporator surface temperature sensor (2), air-supply Temperature Humidity Sensor (3), indoor temperature and humidity sensor (4), refrigerated dehumidification System, heater (6), humidifier (7), pressure fan (8) and control system (9), the fresh air Temperature Humidity Sensor (1), evaporation Device surface temperature sensor (2), air-supply Temperature Humidity Sensor (3), indoor temperature and humidity sensor (4), refrigerant dehumidification system, heating Device (6), humidifier (7) and pressure fan (8) are connected to control system (9);The air conditioner main include housing, compressor and Compressor regulating valve;The control system (9) includes PLC;The left end of the housing is provided with fresh wind port, the right-hand member of housing Provided with air outlet, fresh air Temperature Humidity Sensor (1) is arranged at fresh wind port;Evaporator surface temperature sensor (2) is arranged on system On cold dehumidification system, air-supply Temperature Humidity Sensor (3) is arranged at air outlet;The indoor temperature and humidity sensor (4) is located at sky In transferring house;The refrigerant dehumidification system, heater (6), humidifier (7) and pressure fan (8) are installed in enclosure interior, refrigeration The right side of dehumidification system is provided with heater (6), and the right side of heater (6) is provided with humidifier (7), and the right side of humidifier (7) is provided with Pressure fan (8), refrigerant dehumidification system are located at enclosure interior left end, and pressure fan (8) is located at enclosure interior right-hand member.
2. all-fresh air thermostatic constant wet control system according to claim 1, it is characterised in that the refrigerant dehumidification system bag Include evaporator (5).
3. all-fresh air thermostatic constant wet control system according to claim 2, it is characterised in that the evaporator surface temperature Sensor (2) is located at evaporator fin.
4. according to any described all-fresh air thermostatic constant wet control systems of claim 1-3, it is characterised in that also including man-machine boundary Face, man-machine interface are connected to PLC.
5. a kind of all-fresh air constant temperature and humidity control method as claimed in claim 4, it is characterised in that comprise the following steps:
User sets indoor temperature and humidity, and PLC draws dew-point temperature and enthalpy corresponding to setting humiture point by calculating Value, PLC draw fresh air enthalpy by real-time fresh air temperature and humidity value, when fresh air enthalpy is more than setting enthalpy or indoor temperature During more than design temperature, start compressor;After compressor start, controlled by the difference of evaporator surface temperature and dew-point temperature, Load-unload regulation is carried out, makes evaporator surface temperature infinite approach dew-point temperature or equal to dew-point temperature, when indoor temperature is less than When design temperature and fresh air enthalpy are less than setting enthalpy, compressor is out of service;When indoor temperature is less than design temperature, heater Put into operation, when indoor temperature is more than design temperature, heater is out of service;When indoor temperature is less than design temperature+control essence When spending, then indoor humidity is judged with setting the difference of humidity, difference is negative value, then humidifier puts into operation;Difference is on the occasion of then Humidifier is out of service.
CN201710659251.4A 2017-08-04 2017-08-04 A kind of all-fresh air thermostatic constant wet control system and method Pending CN107355954A (en)

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108151181A (en) * 2018-01-26 2018-06-12 天津市龙川净化工程有限公司 A kind of constant temperature and humidity unit with pre- increasing enthalpy system
CN108294356A (en) * 2018-03-09 2018-07-20 四川中烟工业有限责任公司 A kind of cut tobacco winnowing machine circulated air humiture control system and its control method on the spot
CN109463941A (en) * 2018-12-12 2019-03-15 深圳市美晶科技有限公司 Constant temperature and humidity system
CN109832840A (en) * 2019-02-12 2019-06-04 上海应用技术大学 A kind of constant temperature and humidity sterilizing antioxygen bookcase
CN111483486A (en) * 2020-04-30 2020-08-04 中车青岛四方车辆研究所有限公司 Air conditioner for railway vehicle and dehumidification method thereof
CN112228997A (en) * 2020-11-17 2021-01-15 珠海格力电器股份有限公司 Fresh air device and control method thereof
CN112303859A (en) * 2020-10-30 2021-02-02 东莞骏科空调制造有限公司 Air conditioner constant temperature and humidity variable frequency control method, device, equipment and storage medium
CN112747411A (en) * 2019-10-31 2021-05-04 同方股份有限公司 Control method of direct expansion air conditioning unit with variable air supply set temperature
CN113899046A (en) * 2021-10-28 2022-01-07 宁波威霖住宅设施有限公司 New fan and control method for sterilization of new fan type
TWI763413B (en) * 2021-03-30 2022-05-01 奇鼎科技股份有限公司 Air Environment Control System
CN115218466A (en) * 2022-08-12 2022-10-21 南京天加环境科技有限公司 Full fresh air constant temperature and humidity system and refrigerating method and heating method thereof
CN115523636A (en) * 2022-08-03 2022-12-27 青岛海尔空调器有限总公司 Control method of fresh air equipment and fresh air equipment

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CN106642589A (en) * 2016-12-30 2017-05-10 广东申菱环境系统股份有限公司 Enthalpy value control method of full fresh air constant-temperature constant-humidity unit

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JPH0237245A (en) * 1988-07-25 1990-02-07 Nissan Motor Co Ltd Operation control device in air conditioner
CN2708152Y (en) * 2004-04-13 2005-07-06 东莞市广大制冷有限公司 Frequency changing precision air-conditioner
CN1707188A (en) * 2004-06-08 2005-12-14 东莞市广大制冷有限公司 Whole-fresh air precision air conditioning system
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CN106642589A (en) * 2016-12-30 2017-05-10 广东申菱环境系统股份有限公司 Enthalpy value control method of full fresh air constant-temperature constant-humidity unit

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108151181A (en) * 2018-01-26 2018-06-12 天津市龙川净化工程有限公司 A kind of constant temperature and humidity unit with pre- increasing enthalpy system
CN108294356A (en) * 2018-03-09 2018-07-20 四川中烟工业有限责任公司 A kind of cut tobacco winnowing machine circulated air humiture control system and its control method on the spot
CN109463941A (en) * 2018-12-12 2019-03-15 深圳市美晶科技有限公司 Constant temperature and humidity system
CN109832840A (en) * 2019-02-12 2019-06-04 上海应用技术大学 A kind of constant temperature and humidity sterilizing antioxygen bookcase
CN112747411A (en) * 2019-10-31 2021-05-04 同方股份有限公司 Control method of direct expansion air conditioning unit with variable air supply set temperature
CN111483486A (en) * 2020-04-30 2020-08-04 中车青岛四方车辆研究所有限公司 Air conditioner for railway vehicle and dehumidification method thereof
CN112303859A (en) * 2020-10-30 2021-02-02 东莞骏科空调制造有限公司 Air conditioner constant temperature and humidity variable frequency control method, device, equipment and storage medium
CN112228997A (en) * 2020-11-17 2021-01-15 珠海格力电器股份有限公司 Fresh air device and control method thereof
TWI763413B (en) * 2021-03-30 2022-05-01 奇鼎科技股份有限公司 Air Environment Control System
CN113899046A (en) * 2021-10-28 2022-01-07 宁波威霖住宅设施有限公司 New fan and control method for sterilization of new fan type
CN113899046B (en) * 2021-10-28 2024-01-12 宁波威霖住宅设施有限公司 Fresh air fan and fresh air machine type sterilization control method
CN115523636A (en) * 2022-08-03 2022-12-27 青岛海尔空调器有限总公司 Control method of fresh air equipment and fresh air equipment
CN115218466A (en) * 2022-08-12 2022-10-21 南京天加环境科技有限公司 Full fresh air constant temperature and humidity system and refrigerating method and heating method thereof

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Application publication date: 20171117