CN217900100U

CN217900100U - Full decoupling type purification air conditioning system with fan and air valve joint control

Info

Publication number: CN217900100U
Application number: CN202221756682.5U
Authority: CN
Inventors: 陈瑶; 张伦; 毛海军
Original assignee: Suzhou Shuimu Keneng Technology Co ltd
Current assignee: Suzhou Shuimu Keneng Technology Co ltd
Priority date: 2022-07-07
Filing date: 2022-07-07
Publication date: 2022-11-25
Anticipated expiration: 2032-07-07

Abstract

The utility model relates to a purify air conditioner and clean engineering technical field, a full decoupling type of fan air valve allies oneself with accuse purifies air conditioning system, including control system, new fan group, air treatment unit, exhaust fan group to and the new trend main line and the branch pipeline of connecting new fan group and clean region and room, connect air treatment unit and the air supply main line and the branch pipeline in clean region and room, return air main line and branch pipeline, connect exhaust fan group and the main line and the branch pipeline of airing exhaust in clean region and room, and set up data acquisition and transmission instrument on above-mentioned each main line and branch pipeline, set up the air valve on each main line and branch pipeline, data acquisition and transmission instrument and air valve all are connected with control system. The technical scheme of the utility model in the fresh air pipeline, air supply pipeline, return air pipeline and exhaust pipe way independent setting, realized the decoupling control of fresh air volume, air supply volume and volume of airing exhaust, realize the balanced and pressure differential gradient control of the amount of wind in clean region and room more easily for prior art.

Description

Full decoupling type purification air conditioning system with fan and air valve joint control

Technical Field

The utility model relates to a purify air conditioner and clean engineering technical field, the design and the operation control technique of air conditioning system of purifying.

Background

In order to maintain normal production in large-scale biological pharmaceutical factories, semiconductor and chip manufacturing, precision instrument manufacturing and various electronic factories, some strict requirements on cleanliness, pressure difference gradient and temperature and humidity of corresponding production workshops, particularly cleanliness and pressure difference gradient, are closely related to the production quality and safety of medicines and products. The environment control of the clean area corresponding to the production workshop is undertaken by the purification air-conditioning system, and the purification air-conditioning and the ventilation system thereof can provide clean air which meets the temperature and humidity requirements and is required by the corresponding clean area, thereby maintaining the environment control parameters in the area.

For a large clean factory building, due to the fact that the clean area is provided with a plurality of rooms, the arrangement of a wind system pipe network is very complicated, and each room needs to achieve a strict pressure difference gradient. However, the existing air-conditioning purification system has many defects in design, so that the problems of room air supply quantity balance and pressure difference fluctuation caused by mutual influence of multiple rooms, local air valve switching and multi-mode switching of the air-conditioning purification system cannot be effectively solved. And the existing purifying air-conditioning system can only operate in a single mode and a constant working condition all the year round without interruption, thereby causing great energy waste.

With the development of the related art of the clean air conditioner, there are some solutions to the above problems. For example, a CAV/VAV air valve is arranged on an air system inlet and outlet branch of each room, and the air supply quantity and the pressure difference of the independent rooms are automatically adjusted. Although the method can realize the control of air volume and pressure difference of a single room, the CAV/VAV air valve and a control system (a sensor and a controller) thereof have high manufacturing cost and are not suitable for large-scale clean workshops with multiple rooms; the method can not solve the problem of the influence of mutual air channeling among the rooms on the pressure difference among the rooms, and the frequency conversion of the air feeder and the exhaust fan of the whole purification air-conditioning system is also made according to the pressure information feedback of a single air pipe branch, so that the unified adjustment of the rooms can not be realized integrally.

In addition, in the existing purification air-conditioning system, the fresh air, the supplied air and the room return air are processed by the air-conditioning unit uniformly, and the fresh air is mixed in the supplied air and is sent into a clean area, namely the fresh air system and the supplied air system are not independent, so that great difficulty is brought to the distribution of the fresh air volume of each room, and further the room pressure difference determined by the fresh air volume and the air discharge volume is difficult to control. Although the existing partial purification air conditioning system is provided with an independent fresh air processing unit and also adopts an air processing method of independent temperature and humidity processing, the control mode of the air systems of the systems is the same as that of the conventional system, and the air volume balance and pressure difference control of a plurality of branches and a plurality of rooms cannot be solved.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming current air conditioner and control system's defect of purifying, provide a fan air valve allies oneself with full decoupling type of accuse and purifies air conditioning system, through setting up independent fresh air unit and air treatment unit to and independent wind system, be equipped with the simple sensor of a definite amount and controlgear, finally the clean air supply balance and the pressure differential gradient control problem in the many rooms of effectual solution large area, and can effectively realize purifying air conditioning system's multi-mode switching.

The utility model provides a fan air valve allies oneself with full decoupling type of accuse and purifies air conditioning system, including control system, new fan group, air treatment unit, exhaust unit, and connect new fan group and clean area and the new trend main line and the tributary pipeline in room, connect air treatment unit and the air supply main line and the tributary pipeline in clean area and room, return air main line and tributary pipeline, connect exhaust unit and the main line and the tributary pipeline of airing exhaust in clean area and room, and set up data acquisition and transmission instrument on above-mentioned each main line and tributary pipeline respectively, set up the blast valve on each main line and tributary pipeline, data acquisition and transmission instrument and blast valve all are connected with control system.

Furthermore, supply-air outlet and high efficiency filter have been arranged to every clean room, set up the supply-air valve on the air supply branch pipe, and the return-air inlet has been arranged to every clean room, has arranged the return-air valve on every return-air branch pipe, fresh air inlet and high efficiency filter that arrange in every clean room, the fresh-air valve of arranging on every fresh-air branch pipe, the air exit of arranging in every clean room, the exhaust valve of arranging on every branch pipe of airing exhaust.

Furthermore, the fresh air handling unit comprises a primary filter, an air heat and humidity treatment device, a fresh air machine, a frequency converter thereof and a middle-effect filter, and is used for undertaking heat and humidity treatment, purification and fresh air volume control of outdoor fresh air. The export of new trend unit is connected to clean area through the new trend person in charge, and the new trend is responsible for and is connected to fresh air opening and high efficiency filter in the clean room that corresponds through each branch pipe afterwards, has arranged the new trend valve simultaneously on every new trend branch pipe. The total fresh air volume of the clean area is controlled by the variable frequency of a fresh air fan in the fresh air unit, and the fresh air volume of each room is adjusted by a fresh air valve on each fresh air branch pipe.

Furthermore, the air treatment unit comprises a mixing section of outdoor air and return air, air heat and humidity treatment equipment, a main blower and a frequency converter thereof and an intermediate filter, and is used for bearing heat and humidity treatment, purification and air supply quantity control of the return air of the outdoor air and a clean area. The outlet of the air handling unit is connected to the clean area through a main supply air pipe, which is then connected to supply air outlets and high efficiency filters in the corresponding clean room through respective branch pipes, while an air supply valve is arranged on each supply air branch pipe. The total air supply volume of the clean area is controlled by the frequency conversion of the main air supply blower in the air processing unit, and the air supply volume of each room is adjusted by the air supply valve on each air supply branch pipe. The mixed section entry of air handling unit is connected to clean region through the return air main pipe, and the return air main pipe is connected to the return air inlet in the clean room that corresponds through each return air branch pipe, has arranged the return air valve on every return air branch simultaneously. The return air quantity of each room of the clean area is regulated by a return air valve on each return air branch pipe.

Furthermore, exhaust fan and converter are mainly provided with among the exhaust unit, and exhaust unit is connected to clean region through the main pipe of airing exhaust, and the main pipe of airing exhaust is connected to the air exit in the clean room that corresponds through each branch pipe afterwards, has arranged the exhaust valve on every branch pipe of airing exhaust simultaneously. The total air exhausting quantity of the clean area is controlled by the frequency conversion of the exhaust fan in the exhaust fan set, and the air exhausting quantity of each room is regulated by the exhaust valve on each exhaust branch pipe.

Furthermore, the data acquisition and transmission instrument is a pressure sensor, and the pressure sensor of the fresh air main pipe is arranged on the fresh air main pipe and used for measuring the pressure condition in the fresh air main pipe, so that the real-time calculation of the total fresh air volume is realized; correspondingly, a fresh air branch pipe pressure sensor is arranged on the fresh air branch pipe leading to each clean room and used for measuring the pressure condition in the fresh air branch pipe and realizing the real-time calculation of the fresh air volume of each clean room. The air supply main pipe is provided with an air supply main pipe pressure sensor which is used for measuring the pressure condition in the air supply main pipe, thereby realizing the real-time calculation of the total air supply quantity; correspondingly, an air supply branch pipe pressure sensor is arranged on an air supply branch pipe leading to each clean room and used for measuring the pressure condition in the air supply branch pipe and realizing the real-time calculation of the air supply quantity of each clean room. The air return main pipe is provided with an air return main pipe pressure sensor which is used for measuring the pressure condition in the air return main pipe, thereby realizing the real-time calculation of the total air return amount; correspondingly, a return air branch pipe pressure sensor is arranged on a return air branch pipe leading to each clean room and used for measuring the pressure condition in the return air branch pipe and realizing the real-time calculation of the return air volume of each clean room. The main exhaust pipe is provided with a main exhaust pipe pressure sensor for measuring the pressure condition in the main exhaust pipe, thereby realizing the real-time calculation of the total exhaust air quantity; correspondingly, an air exhaust branch pipe pressure sensor is arranged on the air exhaust branch pipe leading to each clean room and used for measuring the pressure condition in the air exhaust branch pipe and realizing the real-time calculation of the air exhaust volume of each clean room. In addition, a room pressure sensor is installed in each clean room in the clean area for measuring and displaying a differential pressure of each clean room in real time.

Furthermore, the air quantity and the differential pressure are collected through the air pipes and the sensors in the room, real-time data are transmitted to the control system, and the control system outputs control parameters meeting the operation requirements of the whole purification air-conditioning system, so that the differential pressure control of the air quantity balance of the whole clean area is realized.

Further, the control system comprises a central controller, an air valve control communication module and an air fan control communication module.

Furthermore, the central controller is connected with the air pipes and all pressure sensors arranged in the clean rooms, can receive real-time data transmitted by all the pressure sensors, and further calculates and converts the real-time air quantity and the pressure difference of all the main pipes, branch pipes and rooms of the air pipes into; the central controller is respectively connected to the air valve control communication module and the fan control communication module, and can acquire real-time opening information of each air valve in the system from the air valve control communication module and acquire real-time frequency information of each fan in the system from the fan control communication module. The central controller obtains the air volume and valve information of all main pipes and branch pipes, the pressure difference information of all rooms and the frequency information of all fans in the purification air-conditioning system and the clean area, further can automatically calculate the parameters required by the working conditions and modes to be implemented by the system, and then sends the calculated opening execution signals and fan frequency execution signals of all air valves to the air valve control communication module and the air fan control communication module respectively.

Further, the air valve control communication module is connected to all air valves in the system and used for receiving real-time opening information of the air valves and outputting opening adjusting signals to the air valves; the fan control communication module is connected to the fresh air fan, the main air feeder and the frequency converters of the exhaust fan and used for receiving real-time frequency information of all the fans and outputting operation adjusting signals to the fans. The air valve control communication module and the air valve and fan adjusting parameters of the air valve control communication module and the fan control communication module are all from the central controller.

The utility model discloses a technical scheme according to the change of the volume of airing exhaust of total volume of airing exhaust and room, calculate the fresh air volume in total fresh air volume and each room by central controller, then through blast gate control communication module and fan control communication module, the frequency of control fresh air machine and the aperture of all fresh air valves match the change of the volume of airing exhaust of total volume of airing exhaust and room, can realize controlling the pressure differential in all clean rooms.

The central controller sends control parameters to the blower control communication module to control the frequency of the frequency converter of the total blower to realize regulation; the central controller sends control parameters to the air valve control communication module to control the opening of each air supply valve to realize adjustment. The return air quantity of the system is directly sent to the air valve control communication module by the central controller to control the opening of each return air valve to realize regulation. The total fresh air volume of the system is sent to a fan control communication module by a central controller to control the frequency of a fresh air fan frequency converter to realize regulation; the fresh air volume of each clean room is sent to the air valve control communication module by the central controller to control the opening of each fresh air valve to realize adjustment. The central controller sends control parameters to the fan control communication module to control the frequency of the frequency converter of the exhaust fan to realize regulation; the central controller sends control parameters to the air valve control communication module to control the opening of each air exhaust valve to realize adjustment.

The utility model discloses a technical scheme in because the system has set up mutually independent supply air duct, fresh air duct, return air duct and exhaust duct, the fan independent control that air supply volume, fresh air volume and air discharge volume can both correspond through system separately. Therefore, when the total air supply and return air quantity of the clean area are fixed and the air supply and return air quantity of each clean room are also fixed, the pressure difference of each clean room is only related to the difference between the fresh air quantity and the exhausted air quantity of the room. The total air discharge amount of the clean room and the air discharge amount of the room are closely related to the operation condition of equipment in a production workshop, so that the air discharge amount is generally changed in real time, and the change of the air discharge amount can cause the pressure difference of the clean room to change. Therefore, in the system, the pressure difference of all clean rooms can be controlled only by correspondingly calculating the total fresh air volume and the fresh air volume of each room by the central controller according to the change of the total air exhaust volume and the room air exhaust volume, then controlling the communication module and the fan control communication module through the air valve, controlling the frequency of the fresh air fan and the opening of all the fresh air valves, and matching the change of the total air exhaust volume and the room air exhaust volume.

In addition, compared with the prior art, the technical scheme of the utility model, the switching of working mode is realized more easily and more conveniently, when the purification air conditioning system switches between working mode, on duty mode and disinfection mode, the central controller obtains the total air supply volume, fresh air volume and exhaust air volume that adapt to each mode by controlling the frequency change of fresh air machine, forced draught blower and exhaust fan; meanwhile, the central controller controls the opening degree of all the air supply valves, the air return valves, the fresh air valves and the exhaust valves to be matched with the real-time frequency value of each fan to change, and therefore air volume balance and rapid adjustment of pressure difference gradient of all rooms can be achieved.

Compared with the prior art, the utility model, the technical scheme who adopts has following advantage:

1) The fresh air pipeline, the air supply pipeline, the air return pipeline and the exhaust pipeline in the system are respectively and independently arranged, so that the decoupling control of fresh air quantity, air supply quantity and exhaust quantity is realized, and compared with the existing purification air-conditioning system, the air quantity balance and pressure difference gradient control of a clean area and a room are easier to realize.

2) Aiming at the mutual influence of air supply quantity and pressure difference change caused by an air pipe network and a communication door among a plurality of rooms in a clean area, the air quantity balance of the whole clean area is stabilized through the combined control of a fresh air fan, an air feeder and an exhaust fan, and then the air quantity of each branch and the pressure difference control of each room are accurately realized through the combined calculation and control of all air valves.

3) The data sensor used in the system is only a conventional differential pressure sensor, the control system only adopts a conventional programmable controller, and the investment of the whole data transmission and control system is much lower than that of an intelligent system. The utility model discloses a central processing unit among the technical scheme adopt on the market common purification air conditioner central processing unit can, need not carry out the procedure editing alone or type.

4) The utility model discloses a purify air conditioning system can realize the switching of working mode, mode on duty and disinfection mode fast to after mode switch accomplishes, can resume the amount of wind balance in the wind system fast and realize regional pressure differential gradient and room pressure differential control fast, make and purify air conditioning system can be according to the actual production condition of production region, the nimble mode switch that carries on, and need not worry the problem that the mode switch back operating mode is difficult to maintain, can effectual lowering system energy consumption.

5) Compared with the traditional clean air conditioning system, the utility model is additionally provided with an independent fresh air unit, an independent fresh air pipeline and a fresh air port; the setting of independent fresh air unit can increase initial input to a certain extent, and independent fresh air pipeline and fresh air inlet will occupy extra equipment fixing space. However, the utility model discloses the return of convenience and energy-conserving effect is adjusted to the system that brings, will be far more than the increase of initial input. Additionally, the utility model discloses an air valve is simple electrical control valve, for utilizing VAV and CAV air valve that the price is high, realizes the scheme of complicated pipe network and clean regional amount of wind balance and pressure differential control, is greatly reduced again in the equipment input cost is actual.

Drawings

Fig. 1 is a design diagram of a fully decoupled air conditioner and its air system according to an embodiment of the present invention;

FIG. 2 is a data collection and transmission meter layout diagram of an embodiment of the present invention;

fig. 3 is a schematic diagram of a data transmission and control system according to an embodiment of the present invention.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings.

The utility model provides a fan air valve allies oneself with complete decoupling type purification air conditioning system of accuse service be large-scale clean production factory building, the clean room of this type of factory building divides very much, is provided with the door in two rooms of a plurality of intercommunications between the clean room usually. The opening and closing of the door and the ubiquitous door gap cause air leakage between rooms, so that the air volume and the pressure difference of a single room change, and the air volume and the pressure difference of the whole clean area change. In addition, the air system pipeline of the large-scale clean area with multiple rooms is very complex, and the air quantity of one branch and the air valve opening change to cause the air quantity of other branches to change. Therefore, the air volume balance and the pressure gradient in such clean areas are difficult to control.

A full decoupling type purification air conditioning system with joint control of fans and air valves is shown in figure 1 and comprises a fresh air unit 1, an air handling unit 2, an exhaust unit 11, a fresh air main pipeline and a branch pipeline which are connected with the fresh air unit 1, a clean area and rooms, an air supply main pipeline and a branch pipeline which are connected with the air handling unit 2, the clean area and the rooms, an air return main pipeline and a branch pipeline which are connected with the exhaust unit 11, an air exhaust main pipeline and a branch pipeline which are connected with the clean area and the rooms, an air supply outlet and a high-efficiency filter 3 which are arranged in each clean room, an air supply valve 4 which is arranged on each air supply branch pipeline, an air return outlet 5 which is arranged in each clean room, an air return valve 6 which is arranged on each air return branch pipeline, a fresh air outlet and a high-efficiency filter 7 which are arranged in each clean room, a fresh air valve 8 which is arranged on each fresh air branch pipeline, an air outlet 9 which is arranged in each clean room, and an exhaust valve 10 which is arranged on each exhaust branch pipeline.

Furthermore, the fresh air handling unit 1 comprises a primary filter, an air heat and humidity treatment device, a fresh air machine, a frequency converter thereof and a medium efficiency filter, and is used for undertaking heat and humidity treatment, purification and fresh air volume control of outdoor fresh air. The export of new trend unit 1 is connected to clean area through the new trend person in charge, and the new trend is responsible for afterwards and is connected to fresh air opening and high efficiency filter 7 in the clean room that corresponds through each branch pipe, has arranged new trend valve 8 on every new trend branch pipe simultaneously. The total fresh air volume of the clean area is controlled by the variable frequency of the fresh air machine in the fresh air machine unit 1, and the fresh air volume of each room is adjusted by the fresh air valve 8 on each fresh air branch pipe.

Further, the air handling unit 2 comprises a mixing section of outdoor air and return air, an air heat and humidity processing device, a main blower, a frequency converter of the main blower and a medium efficiency filter, and is used for carrying out heat and humidity processing, purification and air supply quantity control on the return air of the outdoor air and a clean area. The outlet of the air handling unit 2 is connected to the clean area through a main supply air duct, which is then connected to supply air outlets in the corresponding clean room and a high efficiency filter 3 through respective branch ducts, while a supply air valve 4 is arranged on each supply air branch duct. The total air supply to the clean area is controlled by the variable frequency of the main blower in the air handling unit 1, while the air supply to each room is regulated by the blower valve 4 on each blower branch. The entry of the mixing section of the air handling unit 2 is connected to a clean area through a return air main pipe, the return air main pipe is connected to a return air inlet 5 in a corresponding clean room through each return air branch pipe, and a return air valve 6 is arranged on each return air branch pipe. The return air volume of each room of the clean area is regulated by a return air valve 5 on each return air branch.

Further, an exhaust fan and a frequency converter thereof are mainly arranged in the exhaust fan unit 11, the exhaust fan unit 11 is connected to a clean area through an exhaust main pipe, then the exhaust main pipe is connected to the corresponding exhaust outlet 9 in the clean room through each branch pipe, and an exhaust valve 10 is arranged on each exhaust branch pipe. The total exhaust air volume of the clean area is controlled by the variable frequency of the exhaust fan in the exhaust fan set 11, and the exhaust air volume of each room is adjusted by the exhaust valve 10 on each exhaust branch pipe.

The fully-decoupled purification air-conditioning system with the joint control of the fan and the air valve and the data acquisition and transmission instruments in the clean area and the clean room which are responsible for the system are arranged as shown in fig. 2. The fresh air main pipe is provided with a fresh air main pipe pressure sensor 12 for measuring the pressure condition in the fresh air main pipe, so that the real-time calculation of the total fresh air volume is realized; correspondingly, a fresh air branch pipe pressure sensor 18 is arranged on the fresh air branch pipe leading to each clean room and used for measuring the pressure condition in the fresh air branch pipe and realizing the real-time calculation of the fresh air volume of each clean room. The air supply main pipe is provided with an air supply main pipe pressure sensor 13 for measuring the pressure condition in the air supply main pipe, thereby realizing the real-time calculation of the total air supply quantity; correspondingly, an air supply branch pipe pressure sensor 16 is arranged on the air supply branch pipe leading to each clean room and used for measuring the pressure condition in the air supply branch pipe and realizing the real-time calculation of the air supply quantity of each clean room. A return air main pipe pressure sensor 14 is arranged on the return air main pipe and used for measuring the pressure condition in the return air main pipe, so that the real-time calculation of the total return air volume is realized; correspondingly, the return air branch pipe pressure sensor 17 is arranged on the return air branch pipe leading to each clean room and used for measuring the pressure condition in the return air branch pipe and realizing the real-time calculation of the return air volume of each clean room. The main exhaust pipe is provided with a main exhaust pipe pressure sensor 15 for measuring the pressure condition in the main exhaust pipe, thereby realizing the real-time calculation of the total exhaust air quantity; correspondingly, an exhaust branch pressure sensor 19 is arranged on the exhaust branch leading to each clean room and used for measuring the pressure condition in the exhaust branch and realizing the real-time calculation of the exhaust volume of each clean room. In addition, a room pressure sensor 20 is installed at each clean room in the clean area for measuring and displaying a pressure difference of each clean room in real time.

The data transmission and control system of the fully decoupled purification air conditioning system with joint control of the fan and the air valve is shown in fig. 3. The air quantity and the differential pressure are collected through sensors in the air pipes and the rooms, real-time data are transmitted into the control system to be analyzed, and the control system outputs control parameters meeting the operation requirements of the whole purification air-conditioning system, so that the differential pressure control of the air quantity balance of the whole clean area is realized. The control system includes a central controller 21, a damper control communication module 22, and a damper control communication module 23.

Further, the central controller 21 is connected with the air pipes and each pressure sensor installed in the clean room, and can receive real-time data transmitted by each pressure sensor, and further calculate and convert the real-time air quantity and the pressure difference of each main pipe, branch pipe and room of the air pipes; the central controller 21 is further connected to the air valve control communication module 22 and the fan control communication module 23, respectively, and can obtain real-time opening information of each air valve in the system from the air valve control communication module 22 and obtain real-time frequency information of each fan in the system from the fan control communication module 23. The central controller 21 obtains the air volume and valve information of all main pipes and branch pipes, the pressure difference information of all rooms and the frequency information of all fans in the clean air conditioning system and the clean area, and then can automatically calculate the parameters required by the working conditions and modes to be implemented by the system, and then sends the calculated execution signals of all air valve openings and the fan frequency execution signals to the air valve control communication module 22 and the air fan control communication module 23 respectively.

Further, the air valve control communication module 22 is connected to all air valves in the system, and is configured to receive real-time opening information of the air valves and output opening adjustment signals to the air valves; the fan control communication module 23 is connected to the fresh air fan, the main blower and the frequency converter of the exhaust fan, and is used for receiving the real-time frequency information of all the fans and outputting operation adjusting signals to the fans. The air valve and fan regulation parameters of the air valve control communication module 22 and the fan control communication module 23 are all from the central controller 21.

The central controller 21 sends control parameters to the blower control communication module 23 to control the frequency of the frequency converter of the total blower to realize regulation; the central controller 21 sends control parameters to the air valve control communication module 22 to control the opening of each air supply valve 4 to realize adjustment. The return air quantity of the system is directly sent to the air valve control communication module 22 by the central controller 21 to control the opening degree of each return air valve 6 to realize regulation. The total fresh air volume of the system is sent to a fan control communication module 23 by a central controller 21, and the frequency of a frequency converter of a fresh fan is controlled to realize regulation; the fresh air volume of each clean room is sent to the air valve control communication module 22 by the central controller 21 to control the opening of each fresh air valve 8 to realize adjustment. The central controller 21 sends out control parameters to the fan control communication module 23 to control the frequency of the frequency converter of the exhaust fan to realize regulation; the central controller 21 sends control parameters to the air valve control communication module 22 to control the opening of each air exhaust valve 10 to realize adjustment.

According to the change of the total air exhaust volume and the room air exhaust volume, the central controller calculates the total fresh air volume and the fresh air volume of each room, then controls the communication module and the fan control communication module through the air valve, controls the frequency of the fresh air fan and the opening of all the fresh air valves, and matches the change of the total air exhaust volume and the room air exhaust volume, so that the control of the pressure difference of all clean rooms can be realized.

Because the system is provided with the mutually independent air supply pipeline, the fresh air pipeline, the return air pipeline and the exhaust pipeline, the air supply quantity, the fresh air quantity and the exhaust air quantity can be independently controlled by the fans corresponding to the respective systems. Therefore, when the total air supply and return air quantity of the clean area are fixed and the air supply and return air quantity of each clean room are also fixed, the pressure difference of each clean room is only related to the difference between the fresh air quantity and the exhausted air quantity of the room. The total air discharge amount of the clean room and the air discharge amount of the room are closely related to the operation condition of equipment in a production workshop, so that the air discharge amount is generally changed in real time, and the change of the air discharge amount can cause the pressure difference of the clean room to change. Therefore, in the system, the pressure difference of all clean rooms can be controlled only by correspondingly calculating the total fresh air volume and the fresh air volume of each room by the central controller 21 according to the changes of the total air discharge volume and the room air discharge volume, then controlling the frequency of the fresh air fan and the opening of all the fresh air valves 8 by the air valve control communication module 22 and the air fan control communication module 23 to match the changes of the total air discharge volume and the room air discharge volume.

Compared with the prior art, the technical scheme of the utility model is easier and more convenient to realize the switching of the working modes, when the purifying air-conditioning system is switched among the working mode, the duty mode and the disinfection mode, the central controller 21 obtains the total air supply volume, the fresh air volume and the air exhaust volume which are suitable for each mode by controlling the frequency change of the fresh air machine, the air feeder and the exhaust fan; the central controller 21 controls the opening of all the blast valves 8, the return air valves 6, the fresh air valves 8 and the exhaust air valves 8 to realize the air volume balance and the pressure difference gradient adjustment of all the rooms.

To sum up, the technical scheme of the utility model be fresh air pipeline, air supply pipeline, return air pipeline and exhaust pipe way independent setting respectively in the system for prior art's obvious advantage, realized the decoupling zero control of fresh air volume, air supply volume and exhaust volume, realize the balanced and pressure difference gradient control of the amount of wind in clean region and room more easily for current purification air conditioning system. The pressure sensor used in the system is only a conventional differential pressure sensor, the control system is not complicated, and the investment of the whole data transmission and control system is much lower than that of an intelligent system.

Claims

1. The utility model provides a full decoupling type purification air conditioning system of fan blast gate allies oneself with accuse which characterized in that: the air supply main pipeline and the branch pipeline of the air handling unit and the clean area and the room, the return air main pipeline and the branch pipeline of the air handling unit and the clean area and the room are connected, the exhaust air main pipeline and the branch pipeline of the exhaust fan unit and the clean area and the room are connected, data acquisition and transmission instruments and air valves are arranged on the main pipelines and the branch pipelines respectively, and the air valves are arranged on the main pipelines and the branch pipelines respectively.

2. The fully decoupled air conditioning system with integrated fan and air valve control of claim 1, wherein: the clean room is provided with an air supply outlet, a high-efficiency filter, a fresh air inlet, the high-efficiency filter, an air return inlet and an air outlet, an air supply valve is arranged on the air supply branch pipe, an air return valve is arranged on the air return branch pipe, a fresh air valve is arranged on the fresh air branch pipe, and an air exhaust valve is arranged on each air exhaust branch pipe.

3. The fully-decoupled purification air conditioning system with integrated control of the fans and the air valves as claimed in claim 1, characterized in that: the fresh air handling unit comprises a primary filter, air heat and humidity treatment equipment, a fresh air fan, a frequency converter of the fresh air fan and a medium efficiency filter.

4. The fully decoupled air conditioning system with integrated fan and air valve control of claim 1, wherein: the air treatment unit comprises a mixing section of outdoor air and return air, air heat and humidity treatment equipment, a main blower, a frequency converter of the main blower and an intermediate filter.

5. The fully decoupled air conditioning system with integrated fan and air valve control of claim 1, wherein: the exhaust unit comprises an exhaust fan and a frequency converter thereof.

6. The fully decoupled air conditioning system with integrated fan and air valve control of claim 1, wherein: the data acquisition and transmission instrument is a pressure sensor, a fresh air main pipe pressure sensor is arranged on a fresh air main pipe, a fresh air branch pipe pressure sensor is arranged on a fresh air branch pipe leading to each clean room, an air supply main pipe pressure sensor is arranged on an air supply main pipe, an air supply branch pipe pressure sensor is arranged on an air supply branch pipe leading to each clean room, a return air main pipe pressure sensor is arranged on a return air main pipe, a return air branch pipe pressure sensor is arranged on a return air branch pipe leading to each clean room, an air exhaust main pipe pressure sensor is arranged on an air exhaust main pipe, an air exhaust branch pipe pressure sensor is arranged on an air exhaust branch pipe leading to each clean room, and a room pressure sensor is arranged in each clean room in a clean area.

7. The fully decoupled air conditioning system with integrated fan and air valve control of claim 1, wherein: the control system comprises a central controller, an air valve control communication module and an air blower control communication module.

8. The fully decoupled air conditioning system with integrated fan and air valve control of claim 7, wherein: the central controller is connected with the air pipe and each pressure sensor arranged in the clean room, and the central controller is respectively connected to the air valve control communication module and the fan control communication module.