CN119436327A - Air conditioning purification system for clean workshop - Google Patents
Air conditioning purification system for clean workshop Download PDFInfo
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- CN119436327A CN119436327A CN202411701908.5A CN202411701908A CN119436327A CN 119436327 A CN119436327 A CN 119436327A CN 202411701908 A CN202411701908 A CN 202411701908A CN 119436327 A CN119436327 A CN 119436327A
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 156
- 238000000746 purification Methods 0.000 title claims abstract description 35
- 238000001914 filtration Methods 0.000 claims abstract description 27
- 230000003749 cleanliness Effects 0.000 claims abstract description 20
- 230000007613 environmental effect Effects 0.000 claims abstract description 12
- 238000005259 measurement Methods 0.000 claims abstract description 11
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 100
- 230000001105 regulatory effect Effects 0.000 claims description 89
- 230000033228 biological regulation Effects 0.000 claims description 34
- 230000001276 controlling effect Effects 0.000 claims description 29
- 239000013618 particulate matter Substances 0.000 claims description 22
- 238000001816 cooling Methods 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 10
- 230000007423 decrease Effects 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims 3
- 238000005265 energy consumption Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 9
- 230000001143 conditioned effect Effects 0.000 abstract 1
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 230000026676 system process Effects 0.000 abstract 1
- 238000007664 blowing Methods 0.000 description 9
- 238000007791 dehumidification Methods 0.000 description 7
- 238000013461 design Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005485 electric heating Methods 0.000 description 3
- 239000003507 refrigerant Substances 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000008520 organization Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000003303 reheating Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 229960000074 biopharmaceutical Drugs 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000003584 silencer Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0096—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater combined with domestic apparatus
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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
- F24F11/0008—Control or safety arrangements for air-humidification
-
- 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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/52—Indication arrangements, e.g. displays
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
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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
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
-
- 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
-
- 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
-
- 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
- F24F6/00—Air-humidification, e.g. cooling by humidification
- F24F6/12—Air-humidification, e.g. cooling by humidification by forming water dispersions in the air
-
- 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
- F24F8/108—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 using dry filter elements
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Fluid Mechanics (AREA)
- Human Computer Interaction (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Dispersion Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Air Conditioning Control Device (AREA)
Abstract
本发明提供用于洁净厂房的空调净化系统，该系统包括用于对室外新风进行粗效过滤和湿度调控的新风机组、对流经空气进行中效过滤和温度调节的空调机组、将经空调机组调节净化后的空气进行高效过滤并送入洁净空间的过滤送风装置、布置在空调机组的空气流路上游的回风新风装置，以及负责室内环境参数和系统运行参数的测量和调控的测控系统。提出了新的空调净化系统流程和调控方法，解决了正压调控与湿度调控相互耦合的解耦难题，实现了洁净厂房的温度、湿度、洁净度和正压四个环境参数的独立调控，提高了洁净厂房环境参数的控制精度，并使其空调净化的运行能耗大幅度减少。
The present invention provides an air conditioning purification system for a clean room, which includes a fresh air unit for coarse filtering and humidity control of outdoor fresh air, an air conditioning unit for medium-efficiency filtering and temperature control of air flowing through, a filtering air supply device for efficiently filtering the air conditioned and purified by the air conditioning unit and sending it into a clean space, a return air fresh air device arranged upstream of the air flow path of the air conditioning unit, and a measurement and control system responsible for measuring and controlling indoor environmental parameters and system operation parameters. A new air conditioning purification system process and control method are proposed, which solves the problem of decoupling the mutual coupling between positive pressure control and humidity control, realizes the independent control of the four environmental parameters of temperature, humidity, cleanliness and positive pressure of the clean room, improves the control accuracy of the environmental parameters of the clean room, and greatly reduces the operating energy consumption of the air conditioning purification.
Description
Technical Field
The invention relates to the field of air conditioning purification, in particular to an air conditioning purification system for independently regulating and controlling four environmental parameters, namely temperature, humidity, cleanliness and positive pressure, of a clean factory building.
Background
Production, assembly and testing work in the fields of aerospace, electronics, bio-pharmaceuticals and the like are all required to be carried out in a clean factory building, the clean factory building is a typical high-energy-consumption building, and how to reduce energy consumption is an important problem to be solved by the design of the clean factory building. The clean factory building needs to control more indoor environment parameters, and four indoor environment parameters including indoor temperature, humidity, cleanliness and positive pressure are required to be simultaneously adjusted and controlled, however, the four indoor environment parameters are mutually related and mutually coupled, and the adjustment of one of the four indoor environment parameters generally causes the change of other related parameters, so that the four indoor environment parameters are difficult to accurately adjust and control simultaneously. For example, in order to improve the accuracy of adjusting and controlling the temperature and humidity parameters of an air conditioner, it has been common in the past to adjust and control the temperature by reducing the temperature, condensing and dehumidifying to a desired moisture content and then increasing the temperature by heating means such as electric heating. However, how to perform decoupling regulation and control on the four parameters and realize independent and accurate control of the four parameters is an important technical problem which is not solved satisfactorily in the clean factory building design.
The prior art currently includes the following related technologies for air conditioning purification of clean plants:
(1) The chinese patent of invention, issued to CN102297502B, discloses a vertically installed FFU system for a clean hall, which includes an air filtration unit (FFU) vertically installed in a ceiling (or floor) of the clean hall;
(2) The Chinese patent application No. CN105299758A discloses an environment-protecting purifying air conditioning system for clean hall, which is characterized by that the lower portion of heat-exchanging coil pipe in air conditioning unit is equipped with water-collecting tank, and the heat-exchanging coil pipe is used for heating or cooling water body in the water-collecting tank so as to implement regulation and control of air humidity
(3) The utility model of China with the authorized bulletin number of CN207113088U discloses a clean hall and a clean system (CN 207113088U), which adopts an air flow organization form that an air supply port and ground return air are distributed on the top.
None of the above systems of the prior art have involved independent regulation control of indoor environmental parameters.
In addition, the following related patent documents exist in the prior art regarding an air conditioning system that controls two parameters of temperature and humidity independently: the method comprises a temperature and humidity double-parameter control air conditioning refrigerating unit CN201201515508. X, a temperature and humidity independent control air conditioning system CN201720367465.X, a temperature and humidity independent control air conditioning system CN201610240179.7, a temperature and humidity independent control air conditioning system CN201710223241.6, a temperature and humidity independent control air conditioning system CN201710050861.4 and a temperature and humidity independent control air conditioning system CN201520688772.9, which are independent control problems of two parameters of indoor temperature and humidity, are not related to the independent control problems of four parameters of temperature, humidity, cleanliness and positive pressure, the independent control of indoor humidity is realized by adopting a method for dehumidifying (or humidifying) room fresh air, the higher the fresh air volume is, the stronger the indoor dehumidification (or humidifying) capability is, but the method has the following problems in clean factory buildings that the sealing performance of clean hall is very good, the fresh air volume is small, when the indoor humidity load is relatively large, the fresh air volume required by dehumidification is relatively large, the dehumidification or the humidification volume is relatively small, the indoor humidity is required to be relatively high, the indoor humidity is required to be completely different from the indoor humidity is not completely clean by the independent control system, the contradiction between the indoor humidity and the indoor humidity is completely-free humidity control system, the independent control problem is solved by the method, the contradiction between the indoor humidity control and the indoor humidity is solved, the independent control problem is solved by the independent control of the indoor humidity control system, the indoor humidity is only can not be completely controlled by the method, and the indoor humidity control is completely has high, and the indoor humidity is completely clean room is completely has high, and has high humidity is clean room is only has high quality because the clean room is only has high air room, however, the treatment method for greatly increasing the indoor air discharge volume to increase the fresh air volume can greatly increase the operation energy consumption of the air conditioner purification system.
Therefore, it is necessary to provide an air conditioning purification system capable of realizing independent processing regulation and control of four indoor environmental parameters of clean factory building temperature, humidity, cleanliness and positive pressure.
Disclosure of Invention
The invention provides an air conditioning purification system capable of realizing independent processing regulation and control of four indoor environment parameters including temperature, humidity, cleanliness and positive pressure of a clean factory building, the air conditioning purification system comprises a fresh air unit, an air conditioning unit and an air supply device, wherein the fresh air unit is sequentially arranged according to the airflow direction and used for performing rough effect filtration on outdoor fresh air and independent regulation on indoor humidity and indoor positive pressure, the air conditioning unit is used for performing medium effect filtration on flowing air and independent regulation on indoor temperature and cleanliness, the air supply device is used for performing high-efficiency filtration on the air regulated by the air conditioning unit and supplying air into a clean hall, the fresh air device is arranged at the upstream of a gas flow path of the air conditioning unit and comprises a return air pipeline for introducing indoor air into the air conditioning unit, a mixed air pipeline for introducing the outdoor fresh air and the return air into the air conditioning unit, the measuring device is used for measuring and controlling the environment parameters in the clean hall and working parameters of the air conditioning purification system, and the regulation and control device is used for regulating and controlling the working parameters of the air conditioning purification system according to the measuring result, wherein the environment parameters comprise the indoor temperature, the humidity, the indoor concentration and the indoor air, the working parameters comprise the opening degree and the operating parameters of a fan.
The air conditioning and purifying system can independently regulate and control the temperature, humidity, cleanliness and indoor positive pressure of indoor air.
Preferably, the return air pipeline of the return air fresh air device comprises a return air inlet arranged in the clean hall and a return air pipe connected between the return air inlet and the air inlet side of the air conditioning unit, and the air mixing pipeline of the return air fresh air device comprises a bypass pipe for introducing indoor return air into the air inlet of the fresh air unit. By arranging the bypass air pipe, the air conditioning purification system provided by the invention can enable the fresh air unit to be converted between a fresh air treatment working condition and a mixed air treatment working condition for treating part of fresh air and part of return air.
The fresh air unit comprises a fresh air box body, a coarse filter, a fresh air fan, a fresh air unit surface air-cooling heater and a humidifier, wherein the coarse filter, the fresh air fan, the fresh air unit surface air-cooling heater and the humidifier are sequentially arranged in the fresh air box body according to the air flow direction, the fresh air unit surface air-cooling heater is used for adjusting the temperature of air, the medium filter is used for performing medium-efficiency filtration on flowing air, the fresh air box body, the air conditioner fan is sequentially arranged in the box body according to the air flow direction, the air conditioner fan is used for driving air to circularly flow, the medium filter is used for adjusting the temperature of the air, and the air supply device comprises a plurality of filtering air supply devices and an air supply pipe, wherein the filtering air supply devices are arranged at the downstream of an air path of the air conditioner unit, and the air supply pipe is connected between the air outlet side of the air conditioner unit and the air inlet side of each filtering air supply device.
Preferably, the return air fresh air device further comprises a fresh air pipeline, wherein the fresh air pipeline comprises a fresh air port arranged outside the clean hall and a fresh air inlet pipe connected between the fresh air port and the air inlet side of the fresh air unit.
The measuring device of the measuring and controlling device comprises a fresh air inlet temperature and humidity sensor arranged on the air inlet side of the fresh air unit, a fresh air outlet temperature sensor arranged on the air outlet side of the fresh air unit, an air conditioner air supply temperature and humidity sensor arranged on the air outlet side of the air conditioner unit, an indoor temperature and humidity sensor, an indoor particulate matter concentration sensor and an indoor positive pressure sensor which are arranged in a clean hall, wherein the regulating and controlling device of the measuring and controlling device comprises a control cabinet, an air conditioner unit water supply regulating valve, a fresh air unit water supply regulating valve, a humidifier water supply regulating valve, a return air bypass regulating valve on a bypass pipe and a fresh air inlet electric valve on a fresh air inlet pipe which are arranged in an air conditioner room.
Preferably, the air conditioning fan of the air conditioning unit is a variable frequency centrifugal fan, the regulating and controlling device controls the operation frequency of the air conditioning fan according to the particulate matter concentration in the indoor air detected by the indoor particulate matter concentration sensor, and takes the median value of the particulate matter concentration meeting the preset air cleanliness as a control target value, wherein the regulating and controlling device controls the operation frequency of the air conditioning fan to be increased to improve the purified air volume when the particulate matter concentration detected by the indoor particulate matter concentration sensor is below the control target value and exceeds a set deviation value, and controls the operation frequency of the air conditioning fan to be decreased to reduce the purified air volume when the indoor cleanliness detected by the indoor particulate matter concentration sensor is below the control target value and exceeds the set deviation value.
Preferably, the fresh air fan of the fresh air unit is a variable frequency centrifugal fan, and the regulating and controlling device controls the operation frequency of the fresh air fan according to the indoor positive pressure detected by the indoor positive pressure sensor, wherein the regulating and controlling device regulates down the operation frequency of the fresh air fan to reduce the fresh air quantity when the indoor positive pressure is higher than a set value and exceeds a set deviation value, and regulates up the operation frequency of the fresh air fan to increase the fresh air quantity when the indoor positive pressure is lower than the set value and exceeds the set deviation value.
Preferably, the regulating device controls the opening of the fresh air bypass regulating valve according to the indoor positive pressure detected by the indoor positive pressure sensor, and under the condition that the indoor humidity independent control is affected by the too small fresh air quantity required by maintaining the indoor positive pressure, the regulating device controls to open the fresh air bypass regulating valve so as to change the fresh air unit from the whole fresh air treatment working condition of the unit into the mixed air treatment working condition of fresh air and return air.
The control device is used for controlling the opening of the air conditioning water supply regulating valve and the humidifying water supply regulating valve of the fresh air unit according to the indoor humidity detected by the indoor temperature and humidity sensor, and realizing the control of the indoor humidity, wherein for summer working conditions, when the indoor relative humidity is higher than a set value and exceeds a certain deviation value, the humidity can be reduced by opening the air conditioning water supply regulating valve, and when the indoor relative humidity is lower than the set value and exceeds a certain deviation value, the humidity can be increased by closing the air conditioning water supply regulating valve;
the control device controls the opening of the fresh air bypass regulating valve and the opening of the fresh air inlet electric valve according to the indoor humidity detected by the indoor temperature and humidity sensor, wherein under the working condition in summer, the control device controls the fresh air bypass valve to be opened to the maximum and the indoor humidity is still continuously increased, the fresh air bypass valve is opened and the fresh air inlet electric valve is synchronously closed until the regulation of the fresh air bypass valve is stopped when the indoor humidity starts to be reduced, the humidity regulation is performed only by controlling the opening of the air conditioner water supply valve of the fresh air unit, under the working condition in winter, the control device controls the fresh air bypass valve to be opened to the maximum and the indoor humidity is still continuously reduced, and the fresh air inlet electric valve is synchronously closed until the regulation of the fresh air bypass valve is stopped when the indoor humidity starts to be increased, and the humidity regulation is performed only by controlling the opening of the humidifying water supply valve of the fresh air unit.
Preferably, if the indoor positive pressure detected by the indoor positive pressure sensor is still lower than the set value and continuously decreases when the frequency of the fresh air fan of the fresh air unit is adjusted to the power frequency, the regulation and control device closes the return air bypass valve and synchronously opens the fresh air inlet valve until the indoor positive pressure starts to increase and is higher than the set value.
According to the air conditioner purifying system, the bypass pipe and the fresh air bypass valve are arranged and regulated and controlled according to the regulation and control method, so that the working condition of the fresh air unit treated by the original fresh air can be changed into the working condition of treating part of fresh air and part of return air, and the fresh air unit can keep smaller fresh air quantity, and the air quantity treatment and dehumidification (or humidification) capability of the fresh air unit can be greatly increased, thereby solving the decoupling problem of contradiction between positive pressure control and humidity control, and reducing the running energy consumption of air conditioner purification.
In summary, the air conditioner purifying system has the beneficial effects that the decoupling problem of independent regulation and control of four parameters of indoor temperature, humidity, cleanliness and positive pressure of a clean factory building is solved, particularly the contradiction problem of humidity control and positive pressure control when fresh air volume of the clean factory building is too small is solved, the regulation and control precision of four indoor environment parameters is improved, the circulating air volume and the fresh air volume of air conditioner purification are reduced as much as possible, and the problem of cold and hot offset of reheating and regulation by adopting electric heating is avoided, so that the operation energy consumption of the air conditioner purifying system is greatly reduced.
Drawings
Fig. 1 is a schematic view showing functional modules of an air conditioning purification system according to an embodiment of the present invention;
Fig. 2 is a plan view schematically showing the structure of an air conditioning purification system according to an embodiment of the present invention.
Fig. 3 is a cross-sectional view taken along line A-A of fig. 2 illustrating an air conditioning purification system according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of the components, numerical representations and values described in these embodiments does not limit the scope of the present invention unless specifically stated otherwise.
The structure and operation of the air conditioning and purifying system according to the present invention will be described in detail below with reference to the accompanying drawings, taking a clean hall employing a top air supply, a single side lower return air flow organization and a centralized air conditioning and purifying scheme as an example. It is apparent that the present invention is not limited thereto and that other airflow patterns such as top-blown double-sided lower return air and side-blown side-return layered air conditioning purification, as well as decentralized air conditioning purification schemes, may be employed.
Referring to fig. 1 to 3, an air conditioning and purifying system 10 according to an embodiment of the present invention includes an air conditioning unit 100, a fresh air unit 200, an air supply device 300, a return air fresh air device 400, and a measurement and control system 500, which are sequentially arranged according to an airflow direction. The fresh air handling unit 200 performs coarse filtration and humidity adjustment on outdoor fresh air, and can realize independent regulation and control on indoor air humidity and indoor positive pressure. The air conditioning unit 100 performs medium-efficiency filtration and temperature adjustment on the flowing air, and can realize independent regulation and control on the indoor air temperature and the indoor air particulate matter concentration. The air blower 300 efficiently filters the air purified by the air conditioner 100 and blows the air into the clean hall. The return air fresh air device 400 is disposed upstream of the air flow path of the air conditioning unit 100 and includes a return air duct 410 for introducing clean hall air into the air conditioning unit 100 and a mixing duct 420 for introducing the outdoor fresh air into the air conditioning unit 100 after mixing with the return air in the return air duct 410. The measurement and control system 500 includes a measuring device 510 for measuring environmental parameters in a clean hall room and operating parameters of an air conditioning and purifying system, and a regulating device 520 for regulating the operating parameters of the air conditioning and purifying system according to the measurement results. The environment parameters in the clean hall comprise the temperature, the humidity, the particulate matter concentration and the indoor positive pressure of indoor air, and the working parameters of the air conditioner purifying system comprise the running frequency of a fan and the opening degree of each electric valve.
The air conditioning unit 100 includes an air conditioning case 110, an air conditioning fan 120 for driving air to circulate, an air conditioning unit surface air-cooling heater 130 for adjusting air temperature, a medium-efficiency filter 140 for medium-efficiency filtering flowing air, and an air conditioning unit air inlet pipe 150 for conveying fresh air and part of return air to an air inlet of the air conditioning unit, which are sequentially arranged in the air conditioning case 100 according to an air flow direction.
Among them, the air conditioning fan 120 preferably employs a variable frequency centrifugal fan that can be operated at a variable frequency to control the amount of purified air. By adjusting the operating frequency of the air conditioning fan 120 of the air conditioning unit 100, the indoor air particulate matter concentration can be regulated. The median value of the concentration of the particulate matters in the level of the required cleanliness is taken as a control target value, the operating frequency of the air conditioner fan 120 is regulated to improve the purified air quantity under the condition that the median value is higher than the target value and exceeds a certain deviation value, and the operating frequency of the air conditioner fan 120 is regulated to reduce the purified air quantity (but not lower than 30Hz to ensure the minimum purified air quantity) under the condition that the median value is lower than the target value and exceeds a certain deviation value.
Wherein, cold water is provided to the air conditioning unit surface air-cooled heater 130 in summer to cool air, and hot water is provided to the air conditioning unit surface air-cooled heater 130 in winter to warm air.
The air conditioner 100 further includes an air conditioner water supply pipe 131 and an air conditioner air return pipe 133 which are communicated with the air conditioner surface air heater 130. As a preferable scheme, an air conditioning water supply pipe of the air conditioning unit is provided with an air conditioning water supply manual valve 132 for switching on and off air conditioning water supply, and an air conditioning water return pipe 133 of the air conditioning unit is provided with an air conditioning water return valve 134 for switching on and off air conditioning water return, and the air conditioning water supply manual valve 132 and the air conditioning water return manual valve 134 are mainly used for closing air conditioning water supply and water return pipelines when the air conditioning unit is overhauled.
The indoor temperature can be controlled by adjusting the opening degree of the air-conditioning water supply adjusting valve 522 of the air-conditioning unit 100. Specifically, in the summer mode, when the indoor temperature is lower than the set value and exceeds a certain deviation value, the air-conditioner water supply regulating valve 522 is closed to raise the temperature, otherwise, when the indoor temperature is higher than the set value and exceeds a certain deviation value, the air-conditioner water supply regulating valve 522 is opened to lower the temperature, and in the winter mode, when the indoor temperature is lower than the set value and exceeds a certain deviation value, the air-conditioner water supply regulating valve 522 is opened, otherwise, when the indoor temperature is higher than the set value and exceeds a certain deviation value, the air-conditioner water supply regulating valve 522 is closed.
The fresh air unit 200 comprises a fresh air box 210, a coarse filter 220, a fresh air fan 230, a fresh air unit surface air-cooled heater 240 and a humidifier 250, wherein the coarse filter 220, the fresh air fan 230, the fresh air unit surface air-cooled heater 240 and the humidifier 250 are sequentially arranged in the fresh air box 210 according to the airflow direction. The fresh air blower preferably employs a variable frequency centrifugal blower that is operable at a variable frequency to control the amount of air delivered by the fresh air blower. The fresh air unit surface air heater 240 provides cold water to cool and dehumidify fresh air or partial return air in summer and provides hot water to warm fresh air or partial return air in winter. The humidifier 250 preferably employs a high pressure micro mist humidifier for humidification during winter.
The fresh air unit 200 further includes a fresh air unit air conditioning water supply pipe 243 and a fresh air unit air conditioning return pipe 242, which are in communication with the fresh air unit surface air cooling heater 240. As a preferable scheme, a fresh air unit air conditioner water supply manual valve 241 for switching on and off air conditioner water supply and a fresh air unit air conditioner water return manual valve 244 for switching on and off air conditioner water return are arranged on a fresh air unit air conditioner water supply pipe 243, and the air conditioner water supply manual valve 241 and the air conditioner water return manual valve 244 are mainly used for closing air conditioner water supply and water return pipelines when the fresh air unit 200 is overhauled. Optionally, the fresh air handling unit 200 further includes a humidified water supply 251 in communication with the humidifier 250. The humidifying water supply pipe 251 receives softened water, and is also provided with a humidifying water supply manual valve 252 for switching on and off the humidifier water supply pipe, which is mainly used for closing humidifying water supply when the humidifier 250 and the humidifier water supply adjusting valve 524 are overhauled.
The opening degrees of the fresh air unit water supply regulating valve 523 and the humidifier water supply regulating valve 524 of the fresh air unit 200 are regulated, so that the indoor humidity can be regulated. For example, in the summer mode, when the indoor relative humidity is higher than the set value and exceeds a certain deviation value, the humidity can be reduced by opening the fresh air duct water supply regulating valve 523, and when the indoor relative humidity is lower than the set value and exceeds a certain deviation value, the humidity can be increased by closing the fresh air duct water supply regulating valve 523. In winter, the water supply regulating valve 524 of the humidifier is used for regulating and controlling the indoor humidity, when the indoor relative humidity is higher than a set value and exceeds a certain deviation value, the humidifying water supply regulating valve 524 is closed, otherwise, when the indoor relative humidity is lower than the set value and exceeds a certain deviation value, the humidifying water supply regulating valve 524 is opened.
In addition, the refrigerant of the surface cooling heater 130 of the air conditioning unit 100 and the refrigerant of the surface cooling heater 240 of the fresh air unit 200 can be chilled water with 7 ℃ water supply and 12 ℃ water return provided by the outside, the heating medium can be hot water with 60 ℃ water supply and 50 ℃ water return provided by the outside, and the water supply and return temperatures of the refrigerant and the heating medium can be adjusted according to actual requirements.
The air blowing device 300, which is capable of efficiently filtering air fed into a room and delivering and distributing clean air into a clean space, includes a plurality of filtering air blowing devices 310 disposed downstream of an air path of the air conditioning unit 100, an air blowing pipe 320 connected between an air outlet side of the air conditioning unit 100 and an air inlet side of each filtering air blowing device, and an air blowing silencer 330 disposed on an air blowing manifold 323. Specifically, the air supply duct 320 includes an air supply main 323, an air supply main 322, and an air supply branch 321, which are sequentially arranged in the air supply direction and are communicated with each other, so that air output from the air conditioning unit 100 is efficiently filtered by the connected filtering air supply device 310 and then is transferred to the clean hall. The filtering and air-blowing device 310 includes an air-blowing port 311 communicating with the room of the clean hall and a high-efficiency filter 312 communicating with the air-blowing port 311 to efficiently filter the flow air. The high efficiency filter 312 is disposed between the air supply trunk 322 and the air supply branch 321. In addition, the blast pipe 320 further includes a blast valve 324 provided on the blast branch pipe 321. The air quantity delivered to the filtering air supply device 310 can be controlled by adjusting the opening of the air supply valve 324, so that the air quantity delivered to the clean hall is adjusted, and the air supply quantity of each air supply opening of the clean hall is basically the same. Alternatively, the air supply opening 311 may be disposed on the top or side wall of the clean hall.
The return air fresh air device 400 is disposed upstream of the air flow path of the air conditioning unit 100, and is capable of collecting and delivering indoor return air and fresh air, and includes a return air pipe 410 for introducing the return air into the air conditioning unit 100, and a mixing pipe 420 for mixing the outdoor fresh air with the return air in the return air pipe and then introducing the mixture into the air conditioning unit.
Specifically, the return air duct 410 includes a plurality of return air inlets 411 disposed in the clean hall, and a return air duct 412 connected between the return air inlets 411 and the air intake side of the air conditioning unit 100. The return duct 412 includes return branch pipes 4121, return main pipes 4122 and return header pipes 4123 that are sequentially connected in the air flow direction, and further includes return valves 4124 provided on the respective return branch pipes 4121. Wherein, a plurality of return air branch pipes 4121 are respectively communicated with the plurality of return air inlets 411, the return air branch pipes 4121 are arranged between the return air inlets 411 and the return air main pipes 4122, and the return air main pipes 4122 are communicated with the air conditioning unit 100. Preferably, the return air duct 410 further includes a return air muffler 413, the return air muffler 413 preferably being disposed on the return air manifold 4123. And the mix duct 420 includes a bypass 421 that directs the indoor return air into the fresh air intake duct 432.
In addition, the return air fresh air device 400 further includes a fresh air duct 430 including a fresh air inlet 431 disposed outside the clean hall, a fresh air inlet duct 432 and a fresh air inlet duct 434 sequentially connected between the fresh air inlet 431 and an air inlet side of the fresh air unit 200 in an air flow direction. In addition, the fresh air pipeline 430 also preferably includes a fresh air muffler 433 disposed on the fresh air intake pipe 434. The bypass pipe 421 is connected between the fresh air intake duct 432 and the return air duct 4123.
The measurement and control system 500 can measure, display and regulate environmental parameters of the air conditioner. Specifically, the measurement device 510 of the measurement and control system 500 includes a fresh air inlet temperature and humidity sensor 517 disposed on an air inlet side of the fresh air handling unit 200 and configured to measure a temperature and a humidity of outdoor fresh air, a fresh air outlet temperature sensor 518 disposed on an air outlet side of the fresh air handling unit 200 and configured to measure an outlet temperature of the fresh air handling unit 200, and an air conditioning supply temperature and humidity sensor 519 disposed on an air outlet side of the air conditioning unit 100 and configured to measure an outlet temperature and a humidity of the air conditioning unit 100. In addition, the measuring device 510 further includes an indoor air temperature and humidity sensor 513 disposed in the clean hall for measuring an indoor temperature and humidity of the clean hall, a particulate matter concentration sensor 511 for measuring a particulate matter concentration in air in the clean hall, and an indoor positive pressure sensor 512 for measuring an indoor positive pressure of the clean hall.
The control device 520 of the measurement and control system 500 comprises a control cabinet 521 arranged in an air conditioning machine room, an air conditioning unit water supply regulating valve 522 arranged on an air conditioning water supply pipe 131 of the air conditioning unit 100, a fresh air unit water supply regulating valve 523 arranged on an air conditioning water supply pipe 243 of the fresh air unit 200, a humidifier water supply regulating valve 524 arranged on a humidifying water supply pipe 251 of a humidifier 250 of the fresh air unit 200, a return air bypass regulating valve 525 arranged on a bypass pipe 421 and a fresh air inlet electric valve 526 on a fresh air inlet pipe 432. The air conditioning unit water supply regulating valve 522 is used for regulating and controlling the water supply flow of the air conditioning water supply pipe 131 of the air conditioning unit 100, the fresh air unit water supply regulating valve 523 is used for regulating and controlling the water supply flow of the air conditioning water supply pipe 243 of the fresh air unit 200, the humidifier water supply regulating valve 524 is used for regulating and controlling the humidification amount of the humidifier 250 of the fresh air unit 200, the return air bypass regulating valve 525 is used for regulating and controlling the return air volume of indoor return air which is transmitted to the inlet of the fresh air unit 200 through the bypass pipe 421, and the fresh air inlet motor valve 526 is used for regulating and controlling the air volume of outdoor fresh air which enters the fresh air unit 200.
The control cabinet 521 has a display screen and an operation keyboard, and is capable of displaying and adjusting environmental parameters and/or operating parameters. The operation keyboard may be integrated with the display screen.
The regulating device 520 controls the operating frequency of the air conditioner fan 120 according to the indoor cleanliness detected by the particulate matter concentration sensor 511, and takes the median value of the air particulate matter concentration satisfying the predetermined cleanliness as a control target value. The control device 520 controls to increase the operation frequency of the air conditioner fan 120 to increase the purified air volume in the case that the concentration of the particulate matter detected by the particulate matter concentration sensor 511 is higher than the control target value and exceeds the set deviation value, and controls to decrease the operation frequency of the air conditioner fan 120 to decrease the purified air volume to achieve the energy saving effect of reducing the operation energy consumption in the case that the indoor cleanliness detected by the particulate matter concentration sensor 511 is lower than the control target value and exceeds the set deviation value.
The control device 520 controls the operation frequency of the fresh air fan 230 according to the indoor positive pressure detected by the indoor positive pressure sensor 512, and when the indoor positive pressure is higher than a set value and exceeds a set deviation value, the control device 520 decreases the operation frequency of the fresh air fan 230 to reduce the fresh air volume, but controls the frequency of the fresh air fan 230 not lower than 30Hz to ensure the minimum fresh air volume, and when the indoor positive pressure is lower than the set value and exceeds a certain deviation value, increases the operation frequency of the fresh air fan 230 to increase the fresh air volume.
The regulating device 520 also controls the opening of the return air bypass regulating valve 525 according to the indoor positive pressure detected by the indoor positive pressure sensor 512, and under the condition that the fresh air volume required for maintaining the indoor positive pressure is too small to influence the independent control of the indoor humidity, the control device controls to open the return air bypass regulating valve 525 so as to change the fresh air handling condition of the fresh air handling unit 200 from the unit total fresh air handling condition to the fresh air handling condition of the fresh air and the return air.
The following describes an automatic monitoring judgment and automatic regulation method of the air conditioning purification system according to the present invention in the case where a contradiction occurs between dehumidification control and positive pressure control. Specifically, the control device 520 can control the opening degrees of the return air bypass control valve 525 and the fresh air intake electric valve 526 according to the indoor humidity detected by the indoor air temperature and humidity sensor 513. For example, in the case where the air conditioner water supply regulation valve 523 of the fresh air handling unit 200 is opened to the maximum and the indoor humidity is still continuously increasing under the summer condition, which indicates that the dehumidification control and the positive pressure control are contradictory, the regulation device controls to open the return air bypass regulation valve 525 and simultaneously close the fresh air intake electric valve 526 until the regulation of the opening degree of the fresh air bypass valve is stopped when the start of the decrease of the indoor humidity is detected. Under the winter working condition, when the humidifier water supply adjusting valve 524 of the fresh air handling unit 200 is opened to the maximum and the indoor humidity is still continuously reduced, which indicates that the contradiction occurs between the dehumidification control and the positive pressure control, the adjusting device 520 controls to open the return air bypass adjusting valve 525 and synchronously closes the fresh air intake electric valve 526, the adjustment of the return air bypass adjusting valve 525 is stopped until the indoor humidity begins to increase, and the humidity is adjusted by controlling the opening of the humidifier water supply adjusting valve 524 of the fresh air handling unit 200. If the indoor positive pressure detected by the indoor positive pressure sensor 512 is still lower than the design value and continues to decrease when the fresh air fan frequency of the fresh air handling unit 200 is adjusted to the power frequency, the regulating device 520 closes the return air bypass regulating valve 525 and synchronously opens the fresh air intake electric valve 526 until the indoor positive pressure starts to increase and is higher than the design value.
Preferably, the indoor air temperature and humidity sensor 513, the particulate matter concentration sensor 511, and the indoor positive pressure sensor 512 may all have a function of displaying the detected environmental parameter. The sensor can be arranged at a height of 1.2 m-1.8 m from the ground, so that the sensor is convenient to observe. Alternatively, a plurality of sensors may be provided at different positions, and the control may be performed by taking an average value of the detection results.
In addition, when the clean factory building stops running, the fresh air inlet electric valve 526 can be closed to keep the clean environment of the indoor air conditioner, so that the energy consumption is reduced.
In summary, the air conditioner purifying system provided by the invention solves the decoupling problem of independent regulation and control of four parameters including temperature, humidity, cleanliness and positive pressure in a clean hall, especially the decoupling problem of contradiction between humidity regulation and positive pressure regulation when the fresh air volume in the clean hall is too small, improves the regulation and control precision of four indoor environment parameters, reduces the circulating air volume and the fresh air volume of air conditioner purification as much as possible, and also does not have the problem of cold and hot offset of reheating by adopting electric heating, thereby greatly reducing the operation energy consumption of the air conditioner purifying system.
Although the present invention has been described above with reference to the exemplary embodiments, the above embodiments are merely for illustrating the technical concept and features of the present invention, and are not intended to limit the scope of the present invention. Any equivalent modifications or variations according to the spirit of the present invention should be included in the scope of the present invention.
Reference numerals illustrate:
10. An air conditioning purification system;
100. an air conditioning unit;
110. an air conditioning case;
120. An air conditioner fan;
130. surface cooling heater of air conditioning unit;
131. air conditioning water supply pipe of air conditioning unit;
132 air conditioning unit air conditioning water supply manual valve;
133 an air conditioning return pipe of an air conditioning unit;
134 air conditioning backwater manual valve of air conditioning unit;
140. a medium-efficiency filter;
150. an air inlet pipe of the air conditioning unit;
200. a fresh air unit;
210. A new bellows body;
220. A coarse filter;
230. fresh air blower;
240. Fresh air unit surface cooling heater;
241 fresh air unit air conditioner water supply manual valve;
242. fresh air unit air conditioner return pipe;
243. fresh air unit air conditioner water supply pipe;
244 fresh air handling unit air conditioning backwater manual valve;
250. a humidifier;
251. Humidifying water supply pipe;
252. A humidifying water supply manual valve;
300 air supply device;
310. A filtering air supply device;
311. An air supply port;
312. a high-efficiency filter;
320 blast pipes;
321. An air supply branch pipe;
322. An air supply dry pipe;
323. a main air supply pipe;
324. An air supply valve;
330. an air supply muffler;
400. A return air fresh air device;
410 return air line;
411. An air return port;
412 return air pipe
4121. A return air branch pipe;
4122. a return air main pipe;
4123. A return air main pipe;
4124. a return air valve;
413. a return air muffler;
420. a wind mixing pipeline;
421. a bypass pipe;
430. a fresh air pipeline;
431. a new wind gap;
432. fresh air inlet pipe;
433. Fresh air muffler;
434. fresh air inlet pipe;
500. a measurement and control system;
510. A measuring device;
511 a particulate matter concentration sensor;
512 indoor positive pressure sensor;
513. An indoor air temperature and humidity sensor;
517. fresh air inlet temperature and humidity sensor;
518. a fresh air outlet temperature sensor;
519. an air conditioner air supply temperature and humidity sensor;
520. a regulating device;
521. a control cabinet;
522. a water supply regulating valve of an air conditioning unit;
523. a fresh air unit water supply regulating valve;
524. A humidifier water supply regulating valve;
525. a return air bypass regulating valve;
526. Fresh air intake electric valve.
Claims (10)
1. An air conditioning purification system for clean factory building, air conditioning purification system (10) is including being used for carrying out coarse filtration and carrying out independent regulation to indoor humidity and indoor malleation fresh air unit (200) according to the air current direction that air conditioning purification system (10) arranged in proper order, carries out the air conditioning unit (100) that the intermediate efficiency was filtered and carries out independent regulation to indoor temperature and cleanliness factor to the air supply of air conditioning unit after adjusting the purification and carry out high-efficient filtration in to clean big hall room air supply, wherein, air conditioning purification system still includes:
a return air fresh air device (400) arranged upstream of the air flow path of the air conditioning unit and comprising a return air line (410) for introducing indoor air into the air conditioning unit and a mixing line (420) for introducing the outdoor fresh air into the air conditioning unit after mixing with the return air in the return air line, and
A measurement and control system (500) comprising a measuring device (510) for measuring the environmental parameters in the clean hall and the working parameters of the air-conditioning purification system, and a regulating device (520) for regulating the working parameters of the air-conditioning purification system according to the measuring result,
Wherein the environmental parameters include temperature, humidity, particulate concentration, and indoor positive pressure of the indoor air, and the operating parameters include fan operating frequency and valve opening.
2. The air conditioning and purifying system according to claim 1, wherein,
The return air pipeline of the return air fresh air device comprises a return air inlet (411) arranged in the clean hall and a return air pipe (412) connected between the return air inlet and the air inlet side of the air conditioning unit, and
The air mixing pipeline of the return air fresh air device comprises a bypass pipe (421) for introducing indoor return air into the inlet of the fresh air unit.
3. The air conditioning and purifying system according to claim 1 or 2, wherein,
The fresh air unit comprises a fresh air box body (210), a coarse filter (220) arranged in the fresh air box body in sequence according to the air flow direction, a fresh air fan (230) for driving air to flow, a fresh air unit surface air-cooled heater (240) for adjusting the air temperature and a humidifier (250) for improving the air humidity;
the air conditioning unit comprises an air conditioning box body (110), an air conditioning fan (120) for driving air to circularly flow, an air conditioning unit surface air-cooling heater (130) for adjusting the air temperature, and a medium-efficiency filter (140) for medium-efficiency filtering of flowing air, wherein the air conditioning fan (120) is sequentially arranged in the box body according to the air flow direction;
The air supply device (300) comprises a plurality of filtering air supply devices (310) arranged at the downstream of the air path of the air conditioning unit and an air supply pipe (320) connected between the air outlet side of the air conditioning unit and the air inlet side of each filtering air supply device (310).
4. The air conditioning and purifying system according to claim 3, wherein,
The return air fresh air device also comprises a fresh air pipeline (430), wherein the fresh air pipeline comprises a fresh air port (431) arranged outside the clean hall and a fresh air inlet pipe (432) connected between the fresh air port and the air inlet side of the fresh air unit.
5. The air conditioning purification system as recited in claim 4, wherein,
The measuring device of the measuring and controlling device comprises a fresh air inlet temperature and humidity sensor (517) arranged on the air inlet side of a fresh air unit, a fresh air outlet temperature sensor (518) arranged on the air outlet side of the fresh air unit, an air conditioner air supply temperature and humidity sensor (519) arranged on the air outlet side of an air conditioner unit, an indoor air temperature and humidity sensor (513) arranged in a clean hall, a particulate matter concentration sensor (511) and an indoor positive pressure sensor (512);
The control device of the measurement and control device comprises a control cabinet (521), an air conditioning unit water supply regulating valve (522), a fresh air unit water supply regulating valve (523), a humidifier water supply regulating valve (524), a return air bypass regulating valve (525) on a bypass pipe and a fresh air inlet electric valve (526) on a fresh air inlet pipe, which are arranged in a hall air conditioning machine room.
6. The air conditioning and purifying system according to claim 5, wherein the air conditioning fan of the air conditioning unit is a variable frequency centrifugal fan, the controlling means controls an operation frequency of the air conditioning fan according to the indoor cleanliness detected by the indoor particulate matter concentration sensor, and takes a particulate matter concentration median value satisfying a predetermined cleanliness as a control target value,
The control device is used for controlling the air conditioner fan to be operated at a higher frequency to improve the purified air quantity under the condition that the particle concentration detected by the indoor particle concentration sensor is higher than a control target value and exceeds a set deviation value, and controlling the air conditioner fan to be operated at a lower frequency to reduce the purified air quantity under the condition that the indoor cleanliness detected by the indoor particle concentration sensor is lower than the control target value and exceeds the set deviation value.
7. The air conditioning and purifying system according to claim 5, wherein the fresh air fan of the fresh air unit is a variable frequency centrifugal fan, the regulating device controls the operation frequency of the fresh air fan according to the indoor positive pressure detected by the indoor positive pressure sensor,
The regulating device regulates down the running frequency of the fresh air fan to reduce the fresh air quantity under the condition that the indoor positive pressure is higher than a set value and exceeds a set deviation value, and regulates up the running frequency of the fresh air fan to increase the fresh air quantity under the condition that the indoor positive pressure is lower than the set value and exceeds a certain deviation value.
8. The air conditioning purification system according to claim 5, wherein the regulation device regulates the air conditioning water supply regulating valve and the humidification water supply regulating valve of the fresh air unit to regulate the indoor humidity by regulating the opening degrees of the air conditioning water supply regulating valve and the humidification water supply regulating valve of the fresh air unit as follows according to the indoor humidity detected by the indoor temperature and humidity sensor:
For summer working condition, when the indoor relative humidity is higher than the set value and exceeds a certain deviation value, the air conditioner water supply regulating valve is opened to reduce the humidity, and when the indoor relative humidity is lower than the set value and exceeds a certain deviation value, the air conditioner water supply regulating valve is closed to increase the humidity,
For the working condition in winter, when the indoor relative humidity is higher than the set value and exceeds a certain deviation value, the humidifying and water supply regulating valve is closed, and when the indoor relative humidity is lower than the set value and exceeds a certain deviation value, the humidifying and water supply regulating valve is opened.
9. The air conditioning purification system according to claim 8, wherein the regulating device regulates the opening degrees of the fresh air bypass regulating valve and the fresh air intake electric valve according to the indoor humidity detected by the indoor temperature and humidity sensor as follows:
Under the working condition in summer, under the condition that an air conditioner water supply regulating valve of a fresh air unit is opened to the maximum and the indoor humidity is still continuously increased, the regulating and controlling device controls to open a large return air bypass valve and synchronously close a fresh air inlet electric valve, so that the fresh air unit is changed from a fresh air treatment working condition to a fresh air and return air mixing treatment working condition, and the regulation of the return air bypass valve is stopped until the indoor humidity begins to be reduced, and the humidity is regulated only by controlling the opening of an air conditioner water supply valve of the fresh air unit;
Under winter working conditions, when the humidifying water supply manual valve of the fresh air unit is opened to the maximum and the indoor humidity is still continuously reduced, the regulating and controlling device controls, the large return air bypass valve is opened, the fresh air inlet electric valve is closed synchronously, and the regulation of the return air bypass valve is stopped until the indoor humidity begins to increase, and the humidity regulation is performed only by controlling the opening of the humidifying water supply valve of the fresh air unit.
10. The air conditioning purification system as set forth in claim 7, wherein if the indoor positive pressure detected by the indoor positive pressure sensor is still lower than the set value and continues to decrease when the fresh air fan frequency of the fresh air unit is adjusted to the power frequency, the regulating means closes the fresh air bypass valve and simultaneously opens the fresh air intake valve until the indoor positive pressure starts to increase and is higher than the set value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411701908.5A CN119436327A (en) | 2024-11-26 | 2024-11-26 | Air conditioning purification system for clean workshop |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411701908.5A CN119436327A (en) | 2024-11-26 | 2024-11-26 | Air conditioning purification system for clean workshop |
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| Publication Number | Publication Date |
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| CN119436327A true CN119436327A (en) | 2025-02-14 |
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| Application Number | Title | Priority Date | Filing Date |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120521251A (en) * | 2025-07-25 | 2025-08-22 | 天通瑞宏科技有限公司 | Clean room dust removal and humidity control system and control method |
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2024
- 2024-11-26 CN CN202411701908.5A patent/CN119436327A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120521251A (en) * | 2025-07-25 | 2025-08-22 | 天通瑞宏科技有限公司 | Clean room dust removal and humidity control system and control method |
| CN120521251B (en) * | 2025-07-25 | 2025-10-21 | 天通瑞宏科技有限公司 | Clean room dust removal and humidity control system and control method |
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