CN208903104U - A kind of vent cabinet stable state valve control system - Google Patents
A kind of vent cabinet stable state valve control system Download PDFInfo
- Publication number
- CN208903104U CN208903104U CN201821752193.6U CN201821752193U CN208903104U CN 208903104 U CN208903104 U CN 208903104U CN 201821752193 U CN201821752193 U CN 201821752193U CN 208903104 U CN208903104 U CN 208903104U
- Authority
- CN
- China
- Prior art keywords
- stable state
- state valve
- module
- mouth
- controller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Emergency Alarm Devices (AREA)
Abstract
The utility model discloses a kind of vent cabinet stable state valve control systems, master control borad including shell and in shell, the master control borad includes controller, communication module, power module and four stable state output modules, and the four stable states output module includes that the first timing detection module, the second timing detection module, third timing detection module, the 4th timing detection module, the first stable state valve driving mouth, the second stable state valve driving mouth, third stable state valve driving mouth and the 4th stable state valve drive mouth.Four stable state output module of the utility model includes that the first stable state valve driving mouth, the second stable state valve driving mouth, third stable state valve driving mouth and the 4th stable state valve driving mouth, the switching being able to achieve between 4 kinds of states, applicability are wider；It is additionally arranged the first timing detection module, the second timing detection module, third timing detection module and the 4th timing detection module, more comprehensively and conveniently；It can remotely be monitored by communication module, function is richer, can be widely applied to laboratory equipment field.
Description
Technical field
The utility model relates to laboratory equipment field, especially a kind of vent cabinet stable state valve control system.
Background technique
Vent cabinet is essential a kind of equipment in laboratory.Some toxic gases and powder are often generated in an experiment
At this moment dirt just needs vent cabinet that these toxic gases and dust are discharged out of laboratory in time, to protect the peace of user
Entirely.In vent cabinet, stable state valve is needed often to realize the switching between different conditions, such as: work is realized by bistable valve
Switching etc. under state and idle state between two different airflow values.Stable state valve generally realizes different shapes by control system
Switching between state.Current stable state valve is mostly bistable valve or three-stable state valve, and four stable state valves are not yet seen in report.Correspondingly,
The control system of stable state valve can only at most be realized between 3 kinds of different conditions (such as working condition, standby mode and state on duty) at present
Switching, it is difficult to realize the switching between 4 kinds of states, applicability is not wide.In addition, at present the control system of stable state valve do not have yet it is defeated
The function that the timing that does well is detected and remotely monitored, function are not abundant enough.
Utility model content
In order to solve the above technical problems, the purpose of this utility model is that: it is extensively and feature-rich to provide a kind of applicability
Vent cabinet stable state valve control system.
Technical solution adopted in the utility model is:
A kind of vent cabinet stable state valve control system, the master control borad including shell and in shell, the master control borad include
Controller, communication module, power module and four stable state output modules, the four stable states output module include that the first timing detects
Module, the second timing detection module, third timing detection module, the 4th timing detection module, the first stable state valve drive mouth, second
Stable state valve drives mouth, third stable state valve driving mouth and the 4th stable state valve to drive mouth, and the output end of the controller is separately connected the
One stable state valve drives mouth, the second stable state valve driving mouth, third stable state valve driving mouth and the 4th stable state valve to drive mouth, and described first is fixed
When detection module drive mouth and controller connect with the first stable state valve respectively, the second timing detection module respectively with second surely
State valve driving mouth is connected with controller, and the third timing detection module drives mouth and controller to connect with third stable state valve respectively
It connects, the 4th timing detection module drives mouth and controller to connect with the 4th stable state valve respectively, the output of the power module
The input terminal of end connection controller, the communication module are connect with controller.
Further, the first timing detection module, the second timing detection module, third timing detection module and the 4th are fixed
When detection module use identical control circuit, the control circuit includes timer and detection circuit, the timer it is defeated
The connection of the input terminal of outlet and detection circuit, the output end of the detection circuit and the input terminal of controller connect.
Further, the timer include 555 timing chips and relay, the relay include relay coil and after
Electric appliance normally opened contact, the output end of 555 timing chip couple relay coil, the relay normally open contact access detection
The input terminal of circuit.
Further, the detection circuit includes sampling unit and amplifying unit, and the output end of the sampling unit is by putting
Big unit is connect with the input terminal of controller in turn.
Further, the amplifying unit includes operational amplifier, the 4th resistance and the 5th resistance, the operational amplifier
Noninverting input by the 4th resistance eutral grounding, the reverse input end of the operational amplifier respectively with the output end of sampling unit and
One end of 5th resistance connects, and the output end of the operational amplifier is separately connected the input terminal and the 5th resistance of controller
The other end.
Further, the four stable states output module further includes switching switch, the input terminal and controller of the switching switch
Output end connection, the output end of the switching switch is equipped with the first switching point, the second switching point, third switching point and the 4th are cut
It changes a little, first switching point is connect with the first stable state valve driving mouth, and second switching point and the second stable state valve driving mouth connect
It connects, the third switching point is connect with third stable state valve driving mouth, and the 4th switching point is connect with the 4th stable state valve driving mouth.
Further, the four stable states output module further includes first to fourth switch, one end connection of the first switch
First stable state valve drives mouth, and one end of the second switch connects the second stable state valve and drives mouth, and one end of the third switch connects
Connect third stable state valve driving mouth, it is described 4th switch one end connect the 4th stable state valve drive mouth, the first switch it is another
The other end at end, the other end of the other end of second switch, third switch and the 4th switch is all connected with the output end of controller.
It further, further include sensor module and alarm module, the sensor module includes infrared sensor, has poison gas
Body detecting sensor, inflammable gas detection sensor, PM2.5 detection sensor and smoke intensity detection sensor, the infrared sensing
The output end of device, the output end of toxic gas detection sensor, the output end of inflammable gas detection sensor, PM2.5 detection pass
The output end of sensor and the output end of smoke intensity detection sensor are all connected with the input terminal of controller, the input terminal of the alarm module
Connect the output end of controller.
Further, the alarm module include 5V power supply, first resistor, second resistance, 3rd resistor, light emitting diode,
The first transistor, second transistor and loudspeaker, the base stage of the first transistor are separately connected the output end and third of controller
One end of resistance, one end of the second resistance and the emitter of second transistor are connect with 5V power supply, the second resistance
The other end connect by light emitting diode with the collector of the first transistor, one end of the first resistor and first brilliant
The collector of body pipe connects, and the other end of the first resistor and the base stage of second transistor connect, the second transistor
The connection of one end of collector and loudspeaker, the other end, the emitter of the first transistor and the other end of loudspeaker of the 3rd resistor
It is grounded.
Further, the communication module use mobile communication module, Bluetooth wireless communication module, WIFI communication module, with
Too at least one of Network Communication module and RS232 communication module.
The beneficial effects of the utility model are: four stable state output modules include that the first stable state valve drives mouth, the second stable state valve
It drives mouth, third stable state valve driving mouth and the 4th stable state valve to drive mouth, is able to cooperate controller and provides four kinds of different outputs to drive
Dynamic four stable state valves, to realize the switching between 4 kinds of states, applicability is wider；It is fixed that first is additionally arranged in four stable state output modules
When detection module, the second timing detection module, third timing detection module and the 4th timing detection module, each stable state valve can be driven
The output state opened one's mouth is timed detection, more comprehensively and conveniently；It is additionally arranged communication module, it can be by communication module to ventilation
Cabinet stable state valve is remotely monitored, and function is richer.
Detailed description of the invention
Fig. 1 is the circuit connecting relation figure of master control borad provided by the embodiment of the utility model；
Fig. 2 is the circuit diagram of the first timing of the utility model embodiment detection module；
Fig. 3 is a kind of structural block diagram of four stable states output module provided by the embodiment of the utility model；
Fig. 4 is another structural block diagram of four stable states output module provided by the embodiment of the utility model；
Fig. 5 is the circuit diagram of the utility model alarm module.
Specific embodiment
Referring to Fig.1, a kind of vent cabinet stable state valve control system, the master control borad including shell and in shell, the master
Control plate includes controller, communication module, power module and four stable state output modules, and the four stable states output module includes first
Timing detection module, the second timing detection module, third timing detection module, the 4th timing detection module, the first stable state valve drive
It opens one's mouth, the second stable state valve driving mouth, third stable state valve driving mouth and the 4th stable state valve driving mouth, the output end of the controller divide
The first stable state valve driving mouth, the second stable state valve driving mouth, third stable state valve driving mouth and the 4th stable state valve driving mouth, institute are not connected
State the first timing detection module drives mouth and controller to connect with the first stable state valve respectively, the second timing detection module difference
Mouth and controller is driven to connect with the second stable state valve, the third timing detection module drives mouth and control with third stable state valve respectively
Device connection processed, the 4th timing detection module drive mouth and controller to connect with the 4th stable state valve respectively, the power module
Output end connection controller input terminal, the communication module connect with controller.
Specifically, controller is the logic control center of master control borad, is responsible for the various controls letter of triggering vent cabinet stable state valve
Number (including communications control signal, output control signal, abnormality alarming control signal etc.).The controller step of the utility model does not relate to
And the prior art can be used to realize in the improvement on any software approach, control signal trigger process.List can be used in controller
Piece machine, dsp chip, ARM etc., such as STC12C5A60S2 chip.
Communication module, for realizing controller and cloud server, remote monitoring terminal, background server or other equipment
Deng communication.Communication module can adopt mobile communication module, Bluetooth wireless communication module, WIFI communication module, ethernet communication mould
Block, RS232 communication module etc. can be connect by UART serial ports or universaling I/O port with controller.
Power module, for powering for controller.It may include power management chip inside power module, pass through power supply line
Connect the power interface of controller.
First stable state valve drives mouth, the second stable state valve driving mouth, third stable state valve driving mouth and the 4th stable state valve to drive mouth,
For driving four outlet on or off of stable state valve core, thus realize 4 kinds of different conditions, such as: the first stable state valve drives
It opens one's mouth corresponding working state, the second stable state valve driving mouth correspond to standby mode, and third stable state valve drives mouth to correspond to state on duty, the
Four stable state valves driving mouth corresponds to the state of emergency (such as fire alarm state).First stable state valve drives mouth, the second stable state valve
The interfaces such as general I/O mouth can be used in driving mouth, third stable state valve driving mouth and the 4th stable state valve driving mouth.
First timing detection module, the second timing detection module, third timing detection module and the 4th timing detection module,
It is detected for the output state timing to each stable state valve driving mouth.
Referring to Fig. 2, it is further used as preferred embodiment, the first timing detection module, the second timing detection mould
Block, third timing detection module and the 4th timing detection module use identical control circuit, and the control circuit includes timing
The input terminal of device and detection circuit, the output end of the timer and detection circuit connects, the output end of the detection circuit with
The input terminal of controller connects.
Specifically, timer is used to provide the working signal continued for some time to detection circuit.
Detection circuit, for detecting whether each stable state valve driving mouth has corresponding signal to export.
Referring to Fig. 2, it is further used as preferred embodiment, the timer includes 555 timing chip U1 and relay,
The relay includes the output end coupling relay of relay coil M and relay normally open contact K, the 555 timing chip U1
Device coil M, the input terminal of the relay normally open contact K detection circuit for access.
Specifically, timer is the monostable circuit being connected into using 555 timing chip U1, when timer is in running order
When, so that the output of 555 timing chip U1 is become high level by low level, keep relay coil M in running order, then first after
Electric appliance normally opened contact Kl closure and output services signal, so that detection circuit is made to work, meanwhile, the 7th foot of 555 timing chip U1
Inside cut-off, power supply VCC will pass through resistance R7 and charge to capacitor C1, and here it is the beginnings of timing, when the voltage of capacitor C1 rises
To power supply VCC voltage 2/3 when, the 7th foot channel of 555 timing chip U1 makes capacitor C1 discharge, and makes the output of the 3rd foot by high electricity
Flat to change back to low level, the first relay coil M release, no longer output services signal, then detection circuit powers off, which determines
When length determined by R7 and C1.
Referring to Fig. 2, it being further used as preferred embodiment, the detection circuit includes sampling unit and amplifying unit,
The output end of the sampling unit is connect by amplifying unit with the input terminal of controller.
Specifically, sampling unit, for sampling the output signal of each stable state valve driving mouth to export sampled voltage.With first
For stable state valve drives mouth, the sampled voltage that corresponding sampling unit obtains is V1, as shown in Figure 2.
Amplifying unit, for amplifying sampled voltage by a certain percentage, to pass through AD thief hatch or universaling I/O port input control
Device processed.
Referring to Fig. 2, it is further used as preferred embodiment, the amplifying unit includes operational amplifier U2, the 4th electricity
R4 and the 5th resistance R5 is hindered, the noninverting input of the operational amplifier U2 is grounded by the 4th resistance R4, the operation amplifier
The reverse input end of device U2 is connect with the output end of sampling unit with one end of the 5th resistance R5 respectively, the operational amplifier U2
Output end be separately connected controller input terminal VO and the 5th resistance R5 the other end.
Specifically, the 6th resistance R6 of Fig. 2 is to avoid input voltage is excessive from damaging operational amplifier by partial pressure
U2。
Referring to Fig. 3, it is further used as preferred embodiment, the four stable states output module further includes switching switch K1,
The input terminal of the switching switch K1 and the output end of controller connect, and the output end of the switching switch is equipped with the first switching point
1, the second switching point 2, third switching point 3 and the 4th switching point 4, first switching point 1 are connect with the first stable state valve driving mouth,
Second switching point 2 is connect with the second stable state valve driving mouth, and the third switching point 3 is connect with third stable state valve driving mouth,
4th switching point 4 is connect with the 4th stable state valve driving mouth.
Specifically, the four stable state output modules of the present embodiment can provide 4 tunnels difference by common four throw switch of hilted broadsword
Output, thus realize 4 kinds of different conditions switching.
Referring to Fig. 4, it is further used as preferred embodiment, the four stable states output module further includes first to fourth opening
It closes, one end of the first switch connects the first stable state valve and drives mouth, and one end of the second switch connects the second stable state valve and drives
It opens one's mouth, one end connection third stable state valve of the third switch drives mouth, and one end of the 4th switch connects the 4th stable state valve
Mouth is driven, the other end of the first switch, the other end of second switch, the other end of third switch and the 4th switch another
End is all connected with the output end of controller.
Specifically, 4 common single-pole single-throw switch (SPST)s can also be used to provide 4 tunnels in the four stable state output modules of the present embodiment
Different output, to realize the switching of 4 kinds of different conditions.
Referring to Fig.1, it is further used as preferred embodiment, further includes sensor module and alarm module, the sensing
Device module include infrared sensor, toxic gas detection sensor, inflammable gas detection sensor, PM2.5 detection sensor and
Smoke intensity detection sensor, the output end of the infrared sensor, the output end of toxic gas detection sensor, inflammable gas detection
The output end of the output end of sensor, the output end of PM2.5 detection sensor and smoke intensity detection sensor is all connected with controller
Input terminal, the output end of the input terminal connection controller of the alarm module.
Specifically, infrared sensor, for obtaining infrared detection signal, with detect stable state valve nearby whether someone.It is infrared
Existing infrared sensor can be used in sensor, can will test signal by general purpose I/O Interface and be transmitted to controller.
Toxic gas detection sensor tests indoor toxic gas detection signal for obtaining, and toxic gas includes chlorine
Gas, ammonia, nitrogen oxides, phosgene, hydrogen fluoride, sulfur dioxide, sulfur trioxide and dimethyl suflfate etc..The utility model it is toxic
Existing toxic gas detection sensor can be used to realize in gas detection sensor, can be will test by general purpose I/O Interface
Signal is transmitted to controller.
Inflammable gas detection sensor tests indoor inflammable gas detection signal, the inflammable gas packet for obtaining
Include hydrogen, methane, propane, ethylene, ethane, acetylene and hydrogen sulfide etc..The inflammable gas detection sensor of the utility model can be used
Existing inflammable gas detection sensor is realized, can be will test signal by general purpose I/O Interface and is transmitted to controller.
PM2.5 detection sensor tests indoor PM2.5 particle analyte detection signal for obtaining.The utility model can
It is realized using existing PM2.5 sensor, signal can be will test by general purpose I/O Interface and be transmitted to controller.
Smoke intensity detection device tests indoor smoke intensity inductive signal for obtaining in real time.The smoke intensity of the utility model incudes
Existing smoke intensity sensor can be used to realize in signal, smoke intensity inductive signal can be transmitted to control by general purpose I/O Interface
Device.
Referring to Fig. 5, it is further used as preferred embodiment, the alarm module includes 5V power supply, first resistor R1, the
Two resistance R2,3rd resistor R3, Light-emitting diode LED, the first transistor Q1, second transistor Q2 and loudspeaker SP1, described first
The base stage of transistor Q1 is separately connected the output end of controller and one end of 3rd resistor R3, one end of the second resistance R2 and
The emitter of second transistor Q2 is connect with 5V power supply, the other end of the second resistance R2 by Light-emitting diode LED into
And connect with the collector of the first transistor Q1, one end of the first resistor R1 is connect with the collector of the first transistor Q1,
The other end of the first resistor R1 is connect with the base stage of second transistor Q2, the collector and loudspeaker of the second transistor Q2
One end of SP1 connects, and the other end of the other end of the 3rd resistor R3, the emitter of the first transistor Q1 and loudspeaker SP1 is equal
Ground connection.
The working principle of circuit shown in Fig. 5 are as follows: (there are toxic gases and dust such as experiment interior in abnormal conditions for controller
Deng) when triggering high level signal increases the base voltage of Q1, the collector and emitter of Q1 is connected at this time, and LED lights, simultaneously
Q2 base voltage is pulled low, Q2 conducting, SP1 sounding alarm.
It is further used as preferred embodiment, the communication module uses mobile communication module, Bluetooth wireless communication mould
At least one of block, WIFI communication module, ethernet communication module and RS232 communication module.
A kind of course of work of vent cabinet stable state valve control system of the utility model is as follows: power module powers on rear system and opens
Beginning work, controller obtain the detection signal such as toxic gas, dust by sensor module, and trigger corresponding control signal,
It include: that there are triggering alarm control signal driving alarm modules whens toxic gas and dust etc. to carry out acousto-optic report in laboratory
It is alert；The data such as the detection signal that triggering communications control signal will acquire by communication module are uploaded to cloud server, long-range prison
Control terminal, background server or other equipment, to realize long-range monitoring；The stable state valve control signal under corresponding state is triggered to lead to
It crosses in the first stable state valve driving mouth, the second stable state valve driving mouth, third stable state valve driving mouth and the 4th stable state valve driving mouth extremely
Lack one to drive stable state valve to work under corresponding stable state.In addition, the first timing detection module, the second timing detection module,
Third timing detection module and the 4th timing detection module will also periodically detect whether each stable state valve driving mouth has signal output, with
The state of system is obtained at the first time.
It is to be illustrated to the preferable implementation of the utility model, but the utility model is not limited to the reality above
Example is applied, those skilled in the art can also make various equivalent changes without departing from the spirit of the present invention
Shape or replacement, these equivalent deformations or replacement are all included in the scope defined by the claims of the present application.
Claims (10)
1. a kind of vent cabinet stable state valve control system, it is characterised in that: the master control borad including shell and in shell, the master
Control plate includes controller, communication module, power module and four stable state output modules, and the four stable states output module includes first
Timing detection module, the second timing detection module, third timing detection module, the 4th timing detection module, the first stable state valve drive
It opens one's mouth, the second stable state valve driving mouth, third stable state valve driving mouth and the 4th stable state valve driving mouth, the output end of the controller divide
The first stable state valve driving mouth, the second stable state valve driving mouth, third stable state valve driving mouth and the 4th stable state valve driving mouth, institute are not connected
State the first timing detection module drives mouth and controller to connect with the first stable state valve respectively, the second timing detection module difference
Mouth and controller is driven to connect with the second stable state valve, the third timing detection module drives mouth and control with third stable state valve respectively
Device connection processed, the 4th timing detection module drive mouth and controller to connect with the 4th stable state valve respectively, the power module
Output end connection controller input terminal, the communication module connect with controller.
2. a kind of vent cabinet stable state valve control system according to claim 1, it is characterised in that: first timing detects
Module, the second timing detection module, third timing detection module and the 4th timing detection module use identical control circuit, institute
Stating control circuit includes timer and detection circuit, and the output end of the timer and the input terminal of detection circuit connect, described
The output end of detection circuit and the input terminal of controller connect.
3. a kind of vent cabinet stable state valve control system according to claim 2, it is characterised in that: the timer includes
555 timing chips and relay, the relay include relay coil and relay normally open contact, 555 timing chip
Output end couple relay coil, the input terminal of the relay normally open contact detection circuit for access.
4. a kind of vent cabinet stable state valve control system according to claim 2, it is characterised in that: the detection circuit includes
The output end of sampling unit and amplifying unit, the sampling unit is connect by amplifying unit with the input terminal of controller.
5. a kind of vent cabinet stable state valve control system according to claim 4, it is characterised in that: the amplifying unit includes
Operational amplifier, the 4th resistance and the 5th resistance, the noninverting input of the operational amplifier are described by the 4th resistance eutral grounding
The reverse input end of operational amplifier is connect with one end of the output end of sampling unit and the 5th resistance respectively, the operation amplifier
The output end of device is separately connected the input terminal of controller and the other end of the 5th resistance.
6. a kind of vent cabinet stable state valve control system according to claim 1, it is characterised in that: four stable state exports mould
Block further includes switching switch, and the input terminal of the switching switch and the output end of controller connect, the output of the switching switch
End is equipped with the first switching point, the second switching point, third switching point and the 4th switching point, first switching point and the first stable state valve
Mouth connection is driven, second switching point is connect with the second stable state valve driving mouth, and the third switching point and third stable state valve drive
It opens one's mouth connection, the 4th switching point is connect with the 4th stable state valve driving mouth.
7. a kind of vent cabinet stable state valve control system according to claim 1, it is characterised in that: four stable state exports mould
Block further includes first to fourth switch, and one end of the first switch connects the first stable state valve and drives mouth, the second switch
One end connects the second stable state valve and drives mouth, and one end connection third stable state valve of the third switch drives mouth, the 4th switch
One end connect the 4th stable state valve drive mouth, the other end of the first switch, the other end of second switch, third switch it is another
The other end of one end and the 4th switch is all connected with the output end of controller.
8. a kind of vent cabinet stable state valve control system according to claim 1, it is characterised in that: further include sensor module
And alarm module, the sensor module include infrared sensor, toxic gas detection sensor, inflammable gas detection sensing
Device, PM2.5 detection sensor and smoke intensity detection sensor, output end, the toxic gas detection sensor of the infrared sensor
Output end, the output end of inflammable gas detection sensor, the output end of PM2.5 detection sensor and smoke intensity detection sensor
Output end is all connected with the input terminal of controller, the output end of the input terminal connection controller of the alarm module.
9. a kind of vent cabinet stable state valve control system according to claim 8, it is characterised in that: the alarm module includes
5V power supply, first resistor, second resistance, 3rd resistor, light emitting diode, the first transistor, second transistor and loudspeaker, it is described
The base stage of the first transistor is separately connected the output end of controller and one end of 3rd resistor, one end of the second resistance and
The emitter of two-transistor is connect with 5V power supply, and the other end of the second resistance is brilliant by light emitting diode and first
The collector of body pipe connects, and one end of the first resistor and the collector of the first transistor connect, the first resistor it is another
The connection of the base stage of one end and second transistor, the collector of the second transistor and one end of loudspeaker connect, the third electricity
The other end of the other end of resistance, the emitter of the first transistor and loudspeaker is grounded.
10. -9 described in any item a kind of vent cabinet stable state valve control systems according to claim 1, it is characterised in that: described logical
Believe that module is logical using mobile communication module, Bluetooth wireless communication module, WIFI communication module, ethernet communication module and RS232
Believe at least one of module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821752193.6U CN208903104U (en) | 2018-10-26 | 2018-10-26 | A kind of vent cabinet stable state valve control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821752193.6U CN208903104U (en) | 2018-10-26 | 2018-10-26 | A kind of vent cabinet stable state valve control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208903104U true CN208903104U (en) | 2019-05-24 |
Family
ID=66576909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821752193.6U Active CN208903104U (en) | 2018-10-26 | 2018-10-26 | A kind of vent cabinet stable state valve control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208903104U (en) |
-
2018
- 2018-10-26 CN CN201821752193.6U patent/CN208903104U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205281716U (en) | Kitchen intelligent security alarm system | |
| CN202998169U (en) | Intelligent power source monitoring device | |
| CN207115708U (en) | A kind of kitchen fuel gas alarm | |
| CN103116335A (en) | Environment management and control system based on Internet and telecommunication network | |
| CN102979949A (en) | Alarm type gas leakage induction cutoff switch | |
| CN208903104U (en) | A kind of vent cabinet stable state valve control system | |
| CN206430322U (en) | Central air-conditioning ventilation warning positioning system | |
| CN205981081U (en) | Electric valve stroke detection device | |
| CN209497644U (en) | A kind of intelligent lighting system | |
| CN208651734U (en) | Fire resisting damper control cabinet | |
| CN203259871U (en) | Control system of positive voltage explosion-proof house | |
| CN203191782U (en) | Environment management and control system based on Internet and telecommunication network | |
| CN203519603U (en) | Intelligent household electronic nose for gas monitoring | |
| CN109377741A (en) | A kind of self-checking system and method for the smoke alarm based on Zigbee network | |
| CN208954263U (en) | Alarm terminal and system | |
| CN209707967U (en) | A kind of slewing control switch | |
| CN207741797U (en) | Valve member current divider box | |
| CN202650988U (en) | Electronic switch | |
| CN208907966U (en) | A kind of detection and tele-control system based on transformation cabinet | |
| CN107895466A (en) | A kind of cordless electrical appliance fire monitoring system | |
| CN217588233U (en) | Gas pipe leakage detection alarm device | |
| CN205353620U (en) | Intelligence house control box | |
| CN208285233U (en) | A kind of alarm bell power supply unit with status detection function | |
| CN213363015U (en) | Intelligent face recognition system for refrigerated cabinet | |
| CN208969827U (en) | A kind of campus intelligent fire monitoring system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 511400 room 508, Tian'an entrepreneurship center, No. 555, North Panyu Avenue, Donghuan street, Panyu District, Guangzhou City, Guangdong Province Patentee after: Guangdong Klaus Laboratory System Technology Co.,Ltd. Address before: 511400 103, No. 95, Dongxing Road, Donghuan street, Panyu District, Guangzhou City, Guangdong Province (Workshop II) Patentee before: GUANGZHOU CLAUS LABORATORY EQUIPMENT CO.,LTD. |