CN201992763U

CN201992763U - AC multispeed remote controller of FFU (Fan Filter Unit)

Info

Publication number: CN201992763U
Application number: CN2011201093645U
Authority: CN
Inventors: 严勤丰; 李嘉华; 陈中权; 黄文才
Original assignee: SUZHOU INDAIR INDOOR AIR TECHNOLOGY Co Ltd
Current assignee: SUZHOU INDAIR INDOOR AIR TECHNOLOGY Co Ltd
Priority date: 2011-04-14
Filing date: 2011-04-14
Publication date: 2011-09-28
Anticipated expiration: 2021-04-14

Abstract

The utility model discloses an AC multispeed remote controller of an FFU (Fan Filter Unit), which comprises a remote control signal collecting unit, a signal analysis unit and a signal output switching unit, wherein the signal collecting unit comprises a wireless signal receiving module, a decoding module, a grouping setting module, a grouping display module and a manual control module, the decoding module is connected with the wireless signal receiving module, the grouping setting module, the grouping display module and the manual control module are respectively connected with the decoding module, and the decoding module is further connected with the signal analysis unit. The AC multispeed remote controller of the FFU can remotely control the FFU and has low cost, high stability and long service life.

Description

FFU exchanges how fast remote controller

Technical field

The utility model relates to fan filter unit (Fan Filter Unit), more specifically, is that a kind of FFU exchanges how fast remote controller.

Background technology

In the fan filter unit of air cleaning facility (FFU), controller module is an important part.The control module of FFU system has multiple control modes such as multi-gear switch control, stepless speed regulation control, remote control control, computer team control.Generally quantity and the user according to FFU in clean room central air conditioner system control mode, the toilet requires to select control mode economically and reasonably to the FFU control system.Particularly, above-mentioned control mode has following characteristics.

1, multi-gear switch control mode.The multi-gear switch control system includes only a speed-regulating switch and power switch that FFU carries.Because control element is that FFU carries, and be distributed in each position in toilet's furred ceiling, so the staff must regulate FFU by pulling out position switch at the scene, control is got up extremely inconvenient, and the wind speed adjustable extent of FFU is limited, only limits to several grades.For overcoming above-mentioned inconvenient factor, through the electric wiring design, can put together the multi-gear switch of all FFU, be put on the ground in the cupboard, realize centralized operation, but be on outward appearance or function, all to have its limitation.Adopting multi-gear switch control mode advantage is that control is simple, cost is low, but has many defectives: big such as: energy consumption, can not stepless speed control, do not have feedback signal, can not realize cohort control flexibly etc.

2, stepless speed regulation control mode.Compare with the multi-gear switch control mode, many continuous velocity adjusters make the FFU rotation speed of fan adjustable continuously, but have also sacrificed electric efficiency simultaneously, make it can loss-rate multi-gear switch control mode taller.

3, computer control mode.Computer control mode generally adopts direct current generator, compares with the front dual mode, and computer control mode has following advanced person's function: (1), employing collective and distributive type control mode, can realize concentrated monitoring and the control of FFU very easily.(2), can realize the separate unit of FFU, many and subregion control easily.(3), intelligent control system has power saving function.(4), can adopt optional remote control mode to monitor and control.(5), control system reserves communication interface, can carry out communication with host computer or network, thereby realize telecommunication and management function.

The outstanding advantage of control direct current generator is: easy control, speed adjustable range broad.But this control mode has following major defect: because clean room does not allow the FFU motor to have brush, therefore, the motor of FFU all adopts brushless direct current motor, the commutation problem is then solved by the electronics phase changer, and the short also reduction greatly in service life that makes whole control system of the life-span of electronics phase changer.And whole system involves great expense, later maintenance expense height.

Exchange in the control mode at FFU, mainly be divided into two kinds of control modes again: Regulation Control mode and VFC mode.So-called Regulation Control mode is adjusted the rotating speed of motor exactly by the size of direct change motor stator voltage.The shortcoming of voltage regulating mode is: the efficient during speed governing is lower, and during low speed, the motor feels hot seriously, speed adjustable range is narrower etc.The VFC mode is exactly to regulate the rotating speed of motor by the mode that changes supply frequency, simultaneously, adjusts the input voltage of whole motor by a certain percentage.Should say that the frequency-variable controller that is applied to three-phase alternating-current supply is a goodish thing, very mature and stable, the VFC mode has excellent performance, and speed adjustable range is big, and flatness is higher, the speed efficiency advantages of higher.But most FFU adopt single phase alternating current power supply, when the interchange control technology of three-phase is transplanted to single phase alternating current power supply, can produce the type controller motor phenomenon of additionally generating heat, be not very stable thereby cause control system, and then can the corresponding service life that influences motor.In addition, frequency conversion mode cost is than higher.For the output harmonic wave that makes frequency converter reduces as much as possible, the switching frequency of the device for power switching of inverter is high as much as possible.Therefore, generally adopt GTR, GTO, PMOSFET as switching device.The cost of above-mentioned these devices own is higher.Therefore, VFC mode overall cost is also than higher.Service life is not long yet, because asynchronous motor belongs to inductive load, power factor can not equal 1.0, so always there is the exchange of reactive power between intermediate dc link and motor.Because the electronic power switch in the inverter can't energy storage, so quadergy can only lean on the energy-storage travelling wave tube (capacitor) in the DC link to cushion.Life of capacitors has limited the service life of frequency converter greatly.

The utility model content

The purpose of this utility model is to overcome the problems referred to above of existing FFU controller, thereby provides a kind of novel FFU to exchange how fast remote controller.

FFU of the present utility model exchanges how fast remote controller, comprises remote signal collecting unit, signal analysis unit and signal output switch unit, wherein:

Described signal gathering unit comprises wireless signal receiver module, the decoder module that is connected with described wireless signal receiver module and the grouping and setting module that is connected with described decoder module respectively, grouping display module and manual control module, and described decoder module further is connected to described signal analysis unit;

Described signal analysis unit comprises the control module that is connected with described decoder module, the power module that is connected with described control module, the dry contact output module that is connected with described control module, the power selection module that is connected with described control module, the current sample module that is connected with described control module and the fault display module that is connected with described current sample module, and described control module further is connected to described signal output switch unit.

Preferably, described decoder module comprises the decoding integrated chip.

Preferably, described decoding integrated chip is the PT2272-L4 chip.

Preferably, described grouping display module comprises digital pipe driving chip and charactron.

Preferably, described digital driving chip is the 74LS47 chip.

Preferably, described wireless signal receiver module is a 315M superhet wireless signal receiver module.

Preferably, described control module comprises singlechip chip.

Preferably, described singlechip chip is the NEC9222 chip.

Preferably, described signal output handover module comprises the driving chip.

Preferably, described driving chip is the ULN2003 chip.

FFU of the present utility model exchanges how fast remote controller and can realize the remote control of FFU is controlled, and cost is low, and stability is high, long service life.

Description of drawings

Fig. 1 is the theory diagram that FFU of the present invention exchanges how fast remote controller;

Fig. 2 is the theory diagram of remote signal collecting unit among Fig. 1;

Fig. 3 is the theory diagram of signal analysis unit among Fig. 1;

Fig. 4 is the circuit diagram of an embodiment of decoder module among Fig. 2, grouping and setting module and grouping display module;

Fig. 5 is the circuit diagram of an embodiment of manual control module among Fig. 2;

Fig. 6 is the circuit diagram of an embodiment of control module among Fig. 3;

Fig. 7 is the circuit diagram of an embodiment of circuit sampling module among Fig. 3;

Fig. 8 is the circuit diagram of an embodiment of power module among Fig. 3;

Fig. 9 is the circuit diagram of an embodiment of power selection module among Fig. 3;

Figure 10 is the circuit diagram of an embodiment of signal output handover module among Fig. 1.

The specific embodiment

Below in conjunction with accompanying drawing, the composition and the operation principle that FFU of the present utility model are exchanged how fast remote controller are elaborated.

As shown in Figure 1, the how fast remote controller of FFU of the present invention comprises remote signal collecting unit 100, signal analysis unit 200 and signal output switch unit 300.Particularly, as shown in Figure 2, signal gathering unit 100 comprises wireless signal receiver module 110, the decoder module 120 that is connected with wireless signal receiver module 110 and the grouping and setting module 130 that is connected with decoder module 120 respectively, grouping display module 140 and manual control module 150, and decoder module 120 further is connected to signal analysis unit 200.Further as shown in Figure 3, signal analysis unit 200 comprises the control module 210 that is connected with decoder module 120 in the remote signal collecting unit 100, the power module 220 that is connected with control module 210, the dry contact output module 230 that is connected with control module 210, the power selection module 240 that is connected with control module 210, the current sample module 250 that is connected with control module and the fault display module 260 that is connected with current sample module 250, and control module 210 further is connected to signal output switch unit 300.

In conjunction with Fig. 1-3, in an embodiment of the present utility model, wireless signal receiver module 110 is a 315M superhet wireless signal receiver module.Decoder module 120 is used for processings of decoding from the signal of wireless signal receiver module 110 transmission, and grouping and setting module 130 and grouping display module 140 are used to be responsible for being provided with each FFU grouping situation and carry out partition packet control and grouping demonstration.As shown in Figure 4, be the circuit theory diagrams of decoder module 120, grouping and

setting module

130 and 140 1 embodiments of grouping display module.In this embodiment, decoder module 120 comprises decoding integrated chip U1, and in this embodiment, this decoding integrated chip is the PT2272-L4 chip.Grouping display module 140 comprises digital pipe driving chip U2 and charactron DS1, and in this embodiment, digital driving chip is the 74LS47 chip.In addition, in this embodiment, grouping and setting module 130 adopts dual-in-line package three-way switch SW DIP-3.Understand easily, described decoding integrated chip, digital pipe driving chip also can adopt other element commonly used.As shown in Figure 5, be the circuit theory diagrams of 150 1 embodiments of manual control module, it comprises switch S 1, S2 and light emitting diode D1.Manual control module 150 is responsible for manually operations such as control FFU open and close, the adjustment of wind speed gear, and running status is reflected by working station indicator (i.e. light emitting diode D1 in this embodiment).

Control module 210 is used to receive the control signal of remote signal collecting unit 100 through decoded signal or 150 outputs of reception manual control module, and it instructs to exporting switch unit 300 through transmission after compiling computing.As shown in Figure 6, be the circuit theory diagrams of 210 1 embodiments of the utility model control module, control module 210 comprises singlechip chip U3.In this embodiment, singlechip chip is the NEC9222 chip.Understand easily, singlechip chip also can adopt other microprocessor commonly used.Current sample module 250 and fault display module 260 are used to monitor the FFU running status and export indicating fault.Be the circuit theory diagrams of 250 1 embodiments of current sample module as shown in Figure 7.Certainly, it also can realize current sample by other circuit structure.Power module 220 is used to system to power, and is illustrated in figure 8 as the schematic diagram of an embodiment of power module 220.Dry contact output module 230 has the output of a Lu Changkai/close signal dry contact.When controller runs well, the normally opened contact closure, when the system failure or outage, length is closed the closure of getting an electric shock, so that the interlock of toilet's miscellaneous equipment control.Be an embodiment schematic diagram of power selection module 240 shown in Fig. 9, it mainly comprises dual-in-line package four-way switch SW DIP-4.

Signal output switch unit 300 is used for the instruction according to signal analysis unit 200, closure or disconnection corresponding relays, power supply tap to corresponding FFU motor is powered, thereby makes motor in corresponding gear operation, realizes the open and close of FFU and the adjustment of wind speed gear.As shown in figure 10, be the circuit theory diagrams of 300 1 embodiments of signal output switch unit.Among the figure, signal output handover module 300 comprises driving chip U4.In this embodiment, driving chip is the ULN2003 chip.Certainly, driving chip also can adopt other conventional signal to come this circuit is made up.

In sum, FFU of the present utility model exchanges how fast remote controller can supporting how fast tap blower fan and combined with remote-control controller, section frequency receiver, thereby formed a cover and exchanged grouping open and close and the air quantity adjusting that remote control system is controlled FFU, particularly, the utlity model has following advantage:

1, utilizes remote controller control FFU can save the staff and enter the loaded down with trivial details work that the technology interlayer is realized FFU open and close and speed governing, particularly concerning the very low space of technology interlayer, more embody its advantage;

2, the utility model makes full use of the characteristic operation of motor itself, and is reliable and stable, do not injure blower fan, long service life;

3, utilize market-ripe technology 315M superhet wireless receiving, sending module, control circuit is simple, and cost is low, saves the initial investment expense;

4, blower fan does not produce extra noise and extra the motor feels hot;

5, can realize separate unit control or many combination controls, the control coverage can reach hundreds of rice;

6, indicating fault be can export, local indication of controller and external indicator lamp comprised;

7, can realize dry contact output, be convenient to the interlock control of Cleanroom system.

Claims

1. a FFU exchanges how fast remote controller, it is characterized in that, this how fast remote controller comprises remote signal collecting unit, signal analysis unit and signal output switch unit, wherein:

2. FFU according to claim 1 exchanges how fast remote controller, it is characterized in that described decoder module comprises the decoding integrated chip.

3. FFU according to claim 2 exchanges how fast remote controller, it is characterized in that described decoding integrated chip is the PT2272-L4 chip.

4. FFU according to claim 1 exchanges how fast remote controller, it is characterized in that described grouping display module comprises digital pipe driving chip and charactron.

5. FFU according to claim 4 exchanges how fast remote controller, it is characterized in that, described digital driving chip is the 74LS47 chip.

6. FFU according to claim 1 exchanges how fast remote controller, it is characterized in that described wireless signal receiver module is a 315M superhet wireless signal receiver module.

7. FFU according to claim 1 exchanges how fast remote controller, it is characterized in that described control module comprises singlechip chip.

8. FFU according to claim 7 exchanges how fast remote controller, it is characterized in that described singlechip chip is the NEC9222 chip.

9. FFU according to claim 1 exchanges how fast remote controller, it is characterized in that, described signal output handover module comprises the driving chip.

10. FFU according to claim 9 exchanges how fast remote controller, it is characterized in that described driving chip is the ULN2003 chip.