CN208969478U - A kind of oxygen mfg. machine with miniature molecular sieve and its control system - Google Patents
A kind of oxygen mfg. machine with miniature molecular sieve and its control system Download PDFInfo
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- CN208969478U CN208969478U CN201822041821.6U CN201822041821U CN208969478U CN 208969478 U CN208969478 U CN 208969478U CN 201822041821 U CN201822041821 U CN 201822041821U CN 208969478 U CN208969478 U CN 208969478U
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Abstract
The utility model discloses a kind of oxygen mfg. machine with miniature molecular sieve and its control system, which includes microprocessor, power regulator, AC-DC converter, battery, detection of power loss module, battery switching module, battery voltage sensing module, cell charge protection module and two position four-way solenoid valves.Above-mentioned oxygen mfg. machine with miniature molecular sieve is when executing shutdown operation or unexpected shutdown transient, battery switching module is connected to the circuit between battery and power regulator and powers to oxygen mfg. machine with miniature molecular sieve, microprocessor sends power down protection control instruction to two position four-way solenoid valves according to the currently performed control phase of pressure-variable adsorption cycle program, adjust the two position four-way solenoid valves closure or openness, compressor is set to be in low-pressure load condition and be not likely to produce violent chattering phenomenon, to avoid compressor body from causing to damage because of mechanical shock or cause compressor body high vibration to strike guard shield or oxygenerator other component is made to be caused failure by high vibration.
Description
Technical field
The utility model relates to gas separation technique field more particularly to a kind of oxygen mfg. machine with miniature molecular sieve and its control systems
System.
Background technique
Molecular sieve oxygen machine is a kind of oxygen generating plant for isolating oxygen from air using principle of pressure swing adsorption, system with molecular sieve for preparing
Oxygen machine compresses air by compressor, enters the adsorption tower equipped with molecular sieve by scavenging air valve after air compression, through adsorbing
Desorption cycle oxygen producing periodically.In recent years, molecular-sieve oxygen generator is reducing volume, is mitigating the technologies such as weight, reduction noise
Aspect tool has greatly improved, and the molecular-sieve oxygen generator of miniaturization has obtained preferable application in home oxygen therapy, becomes breathing
The method the most easy-to-use of one of system chronic disease integrated control to the alleviation state of an illness, promotes rehabilitation, improvement sub-health state
Deng having effects that brilliance.At the same time, usage experience and reliability requirement of the user to oxygenerator under home oxygen therapy situation
Also higher and higher.
Currently, oxygen mfg. machine with miniature molecular sieve, in oxygen processed, the big pressure load of compression machine travel is run, when execution shutdown operation
When or unexpected shutdown transient, compressor generate violent chattering phenomenon still in bringing onto load state, compressor body is because of machinery
It impacts and may cause damage, and easily cause compressor body high vibration to strike guard shield or make other portions of oxygenerator
Part is caused failure by high vibration.
Summary of the invention
The technical problem to be solved by the utility model is to provide a kind of oxygen mfg. machine with miniature molecular sieve and its control systems
It is able to solve oxygen generating plant when executing shutdown operation or unexpected shutdown transient compressor generates violent buffeting and causes event
The technical issues of barrier.
In order to solve the above technical problems, the utility model uses technical solution as described below:
A kind of oxygen mfg. machine with miniature molecular sieve control system comprising have one liang of position four-way solenoid valve, be installed on compressor with
On air delivering pipeline between adsorbing tower with molecular sieve, for controlling compressor and molecular sieve absorption according to the control instruction of microprocessor
The on-off of air delivering pipeline between tower；One AC-DC converter accesses AC power source and controls for the oxygen mfg. machine with miniature molecular sieve
System provides DC power supply；One battery is used to provide standby working power for the oxygen mfg. machine with miniature molecular sieve control system；
One power regulator will export stable operating voltage after the adjustment of the voltage of AC-DC converter or battery；One detection of power loss
Module, whether the detection AC power source, which powers off and will test result, is sent to microprocessor；One microprocessor is detecting
To exporting a battery switching signal when AC power source power-off, and according to the currently performed control phase of pressure-variable adsorption cycle program to
Two position four-way solenoid valves send power down protection control instruction, adjust two position four-way solenoid valve to execute power down protection movement；
One battery switching module, the circuit path being connected to according to the battery switching signal between the battery and power regulator.
Preferably, the detection of power loss module includes a voltage sample circuit, for the output end from power regulator
Voltage is sampled to generate sampling voltage and be sent to microprocessor, and the microprocessor judges the exchange according to sampling voltage
Whether power supply powers off；One optical coupling isolation circuit, for the voltage sample circuit according to the input control of the AC power source
On-off.
Preferably, the optical coupling isolation circuit includes optocoupler U1, diode D21 and resistance R21, the voltage sample circuit
The firewire of one end and AC power source including sampling resistor R22 and sampling resistor R23, the resistance R21 connects, resistance R21's
The other end connects the anode of diode D21, the anode of the luminous tube of the cathode connection optocoupler U1 of diode D21, the hair of optocoupler U1
The cathode of light pipe and the zero curve of AC power source connect, and one end of the sampling resistor R22 is connected to by the photosensitive tube of optocoupler U1
The other end of the output end of the power regulator, sampling resistor R22 is grounded by sampling resistor R23, the sampling resistor
Connecting node between R22, sampling resistor R23 is connect with the microprocessor.
Preferably, the battery switching module includes an optical coupling isolation circuit and a relay drive circuit, the light
Coupling isolation circuit drives the relay drive circuit according to the battery switching signal, and the relay drive circuit is described
The circuit path being connected under the driving of optical coupling isolation circuit between the battery and power regulator.
Preferably, the optical coupling isolation circuit includes optocoupler U2, the relay drive circuit switching tube Q11 and relay
Switch K1, the optocoupler U2 drive the switching tube Q11 according to the battery switching signal, described in the switching tube Q11 control
The circuit path that relay switch K1 is acted to be connected between the battery and power regulator.
Preferably, the switching tube Q11 is triode or metal-oxide-semiconductor.
Preferably, the oxygen mfg. machine with miniature molecular sieve control system further includes having a battery voltage sensing module, detection
The battery terminal voltage and voltage sense signal give the microprocessor, and the microprocessor is super in the battery terminal voltage
Charge protection signal is exported when preset threshold out；One cell charge protection module disconnects institute according to the charge protection signal
The circuit path between AC-DC converter and battery is stated, stopping takes from the output end of the AC-DC converter supplies electricity to the battery
Charging.
Preferably, the cell charge protection module includes an optical coupling isolation circuit and a relay drive circuit, institute
It states optical coupling isolation circuit and the relay drive circuit is driven according to the charge protection signal, the relay drive circuit exists
The circuit path between the AC-DC converter and battery is disconnected under the driving of the optical coupling isolation circuit.
Preferably, the optical coupling isolation circuit includes optocoupler U3, the relay drive circuit include switching tube Q12 and after
Electric switch K0, the optocoupler U3 drive the switching tube Q12, the switching tube Q12 control according to the charge protection signal
The relay switch K0 movement is to disconnect the circuit path between the AC-DC converter and battery.
A kind of oxygen mfg. machine with miniature molecular sieve includes the compressor being sequentially communicated, adsorbing tower with molecular sieve, oxygen container and such as
Above-described oxygen mfg. machine with miniature molecular sieve control system.
The advantageous effects of the utility model are: above-mentioned oxygen mfg. machine with miniature molecular sieve is when executing shutdown operation or prominent
Right shutdown transient, the circuit path between battery switching module connection battery and power regulator continue to give small-size molecular-sieve oxygen
Machine power supply, microprocessor send power down to two position four-way solenoid valves according to the currently performed control phase of pressure-variable adsorption cycle program
Protect control instruction, adjust the two position four-way solenoid valves closure or openness, make compressor be in low-pressure load condition without
It is also easy to produce violent chattering phenomenon, to avoid compressor body from may cause damage because of mechanical shock or lead to compressor sheet
Body high vibration strikes guard shield or oxygenerator other component is made to be caused failure by high vibration.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the oxygen mfg. machine with miniature molecular sieve in the utility model one embodiment；
Fig. 2 is the structural block diagram of the molecular sieve oxygen generation machine control system in the utility model one embodiment；
Fig. 3 is the structural block diagram of the detection of power loss module in Fig. 2；
Fig. 4 is the structural block diagram of the battery switching module in Fig. 2；
Fig. 5 is the structural block diagram of the cell charge protection module in Fig. 2；
Fig. 6 is the circuit diagram of the molecular sieve oxygen generation machine control system in the utility model one embodiment；
Fig. 7 is the working timing figure of the molecular-sieve oxygen generator in the utility model one embodiment.
Specific embodiment
To make those skilled in the art that the purpose of this utility model, technical solution and excellent be more clearly understood
Point is further elaborated the utility model below in conjunction with drawings and examples.
As shown in Figure 1, oxygen mfg. machine with miniature molecular sieve includes the compression being sequentially communicated in the utility model one embodiment
Machine 101, adsorbing tower with molecular sieve 102 and oxygen container 103, air are input to adsorbing tower with molecular sieve after being compressed by the compressor 101
102 carry out nitrogen oxygen separating, and oxygen is exported to the oxygen container 103 and stored, then is conveyed to patient.The output of the oxygen container 103
An oxygen concentration sensor 104 and a use for the gas oxygen concentration of detection molecules sieve oxygenerator oxygen output end is additionally provided on pipeline
In the ultrasonic gas flow sensor 105 of the gas flow values of detection molecules sieve oxygenerator oxygen output end.
The oxygen mfg. machine with miniature molecular sieve includes oxygen mfg. machine with miniature molecular sieve control system, and the set-up of control system is in institute
It states in oxygen mfg. machine with miniature molecular sieve, for controlling the operation of the oxygen mfg. machine with miniature molecular sieve.As shown in Fig. 2, small-size molecular-sieve
Oxygenerator control system includes a microprocessor U5, a power regulator U6, an AC-DC converter U7, a battery BAT, one
Detection of power loss module 10, a battery switching module 20 and two position four-way solenoid valves 30.
Two position four-way solenoid valve 30, the air delivering pipeline being installed between compressor 101 and adsorbing tower with molecular sieve 102
On, for controlling air delivering pipeline between compressor 101 and adsorbing tower with molecular sieve 102 according to the control instruction of the microprocessor U5
On-off.In the present embodiment, the adsorbing tower with molecular sieve 102 includes adsorbing tower with molecular sieve A and adsorbing tower with molecular sieve B, and described point
Son sieve adsorption tower A and adsorbing tower with molecular sieve B is connect by two position four-way solenoid valve 30 with the compressor 101.Described
Under the switching control of two-position four-way solenoid valve 30, adsorbing tower with molecular sieve A and adsorbing tower with molecular sieve B alternately pressurized adsorbent, drop
Press the process control procedure of desorption.
The AC-DC converter U7 accesses 220V AC power source, the alternating current of the AC power source is converted to direct current
Electricity, and DC power supply is provided for the oxygen mfg. machine with miniature molecular sieve control system.The battery BAT be lithium battery, be used for for
The oxygen mfg. machine with miniature molecular sieve control system provides standby working power.The power regulator U6 will be converted from AC-DC
Stable operating voltage is exported after the adjustment of the voltage of device U7 or battery BAT.The detection of power loss module 10 detects the exchange
Whether power supply, which powers off and will test result, is sent to microprocessor U5.The microprocessor U5 receives the detection of power loss module
10 testing result, and a battery switching signal is exported when detecting AC power source power-off, while according to pressure-variable adsorption
The currently performed control phase of cycle program sends power down protection control instruction to two position four-way solenoid valves 30, adjusts described two
Four way solenoid valve 30 is to execute power down protection movement.The battery switching module 20 is connected to according to the battery switching signal
Circuit path between the battery BAT and power regulator U6 continues as described small-sized point in AC power source power-off
Son sieve oxygenerator control system power supply.
When oxygen mfg. machine with miniature molecular sieve is when executing shutdown operation or unexpected shutdown transient, the microprocessor U5 pass through institute
State detection of power loss module 10 detect 220V AC power source (main power source) power-off when, the microprocessor U5 switches to the battery
Module 20 sends control battery switching signal, and the battery switching module 20 is connected to the battery according to the battery switching signal
Circuit path between BAT and power regulator U6 is powered for the oxygen mfg. machine with miniature molecular sieve control system；Meanwhile it is described
Microprocessor U5 sends power down protection to two-position four-way solenoid valve according to the currently performed control phase of pressure-variable adsorption cycle program
Compressor 101 is set under low-pressure load behavior and transports to adjust 30 closure or openness of two-position four-way solenoid valve by control instruction
Row, thereby executing power down protection movement.
The working principle that oxygen mfg. machine with miniature molecular sieve executes power down protection movement is as follows:
Adsorbing tower with molecular sieve carry out pressure swing adsorption technique control process in, loop control operating process include pressurized adsorbent,
Two stages of depressurization desorption.Switching control in two-tower type process flow through two-position four-way solenoid valve inhales the pressurization of two towers
Attached, depressurization desorption alternately, has an adsorbing tower with molecular sieve to be in the pressurized adsorbent stage to the company of composition at any time
Continue oxygen processed.
Fig. 7 is the working timing figure of oxygen mfg. machine with miniature molecular sieve.Referring to Fig. 7, the curve of (A) indicates two-position four-way in Fig. 7
Solenoid valve switching control action sequence curve.The curve of (B) indicates that adsorbing tower with molecular sieve sky cavity pressure accordingly follows two in Fig. 7
The change curve of position four-way solenoid valve switching control movement, wherein solid line is that adsorbing tower with molecular sieve A sky cavity pressure accordingly follows
The change curve of two-position four-way solenoid valve switching control movement, dotted line are that adsorbing tower with molecular sieve B sky cavity pressure accordingly follows two
The change curve of position four-way solenoid valve switching control movement.The curve of (C) indicates that compressor load follows two-position four-way electric in Fig. 7
The change curve of magnet valve switching control movement.According to adsorbing tower with molecular sieve sky cavity pressure change curve by pressure-variable adsorption period journey
Sequence is divided into tetra- phase intervals of T1, T2, T3, T4, when the currently performed control phase of pressure-variable adsorption cycle program is in T1 rank
Duan Shi, adsorbing tower with molecular sieve A sky cavity pressure be less than adsorbing tower with molecular sieve B sky cavity pressure, compressor to empty cavity pressure more
Low adsorbing tower with molecular sieve A inflation, compressor is in low-pressure load condition at this time；When pressure-variable adsorption cycle program currently executes
Control phase when being in the T2 stage, adsorbing tower with molecular sieve A sky cavity pressure is greater than adsorbing tower with molecular sieve B sky cavity pressure, pressure
Contracting machine keeps continuing inflating pressure to adsorbing tower with molecular sieve A, and compressor is in big pressure load state at this time；When pressure-variable adsorption week
When the currently performed control phase of phase program is in the T3 stage, adsorbing tower with molecular sieve A sky cavity pressure is greater than adsorbing tower with molecular sieve B
Empty cavity pressure, compressor is to the lower adsorbing tower with molecular sieve B inflation of empty cavity pressure, and compressor is in low-pressure load at this time
State；When the currently performed control phase of pressure-variable adsorption cycle program is in the T4 stage, adsorbing tower with molecular sieve A sky cavity pressure
Less than adsorbing tower with molecular sieve B sky cavity pressure, compressor keeps continuing inflating pressure to adsorbing tower with molecular sieve B, at this time compressor
In big pressure load state.
Referring again to Fig. 7, two-position four-way solenoid valve switches when the curve expression of (D) is not carried out power down protection movement in Fig. 7
Control shutdown action timing curve.Compressor load follows two when the curve expression of (E) is not carried out power down protection movement in Fig. 7
The change curve of four way solenoid valve switching control shutdown action, S point are pressure-variable adsorption week when executing shutdown operation or suddenly power-off
The currently performed control phase (position) of phase program, the S point fall in T2 phase interval, and compressor is still in big pressure under the situation
Load condition, when executing shutdown operation or suddenly power-off, pressure steeply rises and generates violent buffeting and show in compresser cylinder
As compressor body may cause damage because of mechanical shock, and compressor body high vibration is easily caused to strike protection
Shell makes oxygenerator other component be caused failure by high vibration.
The oxygen mfg. machine with miniature molecular sieve of the utility model is when executing shutdown operation or unexpected shutdown transient, the micro process
Device sends power down protection control instruction to two position four-way solenoid valves according to the currently performed control phase of pressure-variable adsorption cycle program,
Two position four-way solenoid valve is adjusted to execute power down protection movement.Referring again to Fig. 7, the curve of (F) indicates to execute in Fig. 7
Two-position four-way solenoid valve switching control shutdown action timing curve when electric protection acts.The curve of (G) indicates to execute power down in Fig. 7
Compressor load follows the change curve of two-position four-way solenoid valve switching control shutdown action when protection act.S ' are stopped to execute
Transformation adsorption cycle program currently performed control phase (position) when machine operation or suddenly power-off, the S ' fall in T2 phase region
Between, compressor is still in big pressure load state under the situation, and compressor is in adsorbing tower with molecular sieve A inflating pressure rank
Section；The microprocessor sends power down protection control instruction to two position four-way solenoid valves, is opened and is divided by two-position four-way solenoid valve
Son sieve adsorption tower channel B, is closed adsorbing tower with molecular sieve A channel, compressor is switched to adsorbing tower with molecular sieve B inflating pressure,
It is set to its load under low-pressure operating condition to run, compressor is in low-pressure load condition and is not likely to produce acutely under the situation
Chattering phenomenon, can avoid compressor body may cause because of mechanical shock damage or cause compressor body high vibration to hit
It hits guard shield or makes oxygenerator other component by failure caused by high vibration.
If the currently performed control phase of pressure-variable adsorption cycle program falls in T4 phase interval, compressor is still located under the situation
In big pressure load state, and compressor was in the adsorbing tower with molecular sieve B inflating pressure stage；The microprocessor is to two four
Three-way electromagnetic valve sends power down protection control instruction, opens adsorbing tower with molecular sieve A channel by two-position four-way solenoid valve, is closed molecule
Adsorption tower channel B is sieved, compressor is switched to adsorbing tower with molecular sieve A inflating pressure, its load is made to be set to low-pressure operating condition
Lower operation, compressor is in low-pressure load condition and is not likely to produce violent chattering phenomenon under the situation, can avoid compressor
Ontology may cause damage because of mechanical shock or cause compressor body high vibration to strike guard shield or make oxygenerator
Other component is by failure caused by high vibration.
If the currently performed control phase of pressure-variable adsorption cycle program falls in T1 phase interval, compressor is still located under the situation
In low-pressure load condition, and compressor was in the adsorbing tower with molecular sieve A inflating pressure stage；The microprocessor is to two four
Three-way electromagnetic valve sends power down protection control instruction, and two-position four-way solenoid valve is kept to open adsorbing tower with molecular sieve A channel, is closed molecule
Adsorption tower channel B is sieved, compressor is run under low-pressure load behavior at this time, and compressor is in low-pressure load shape under the situation
State and be not likely to produce violent chattering phenomenon, can avoid compressor body may cause because of mechanical shock damage or cause to compress
Machine ontology high vibration strikes guard shield or makes oxygenerator other component by failure caused by high vibration.
If the currently performed control phase of pressure-variable adsorption cycle program falls in T3 phase interval, compressor is still located under the situation
In low-pressure load condition, and compressor was in the adsorbing tower with molecular sieve B inflating pressure stage；The microprocessor is to two four
Three-way electromagnetic valve sends power down protection control instruction, and two-position four-way solenoid valve is kept to open adsorbing tower with molecular sieve channel B, is closed molecule
Adsorption tower A channel is sieved, compressor is run under low-pressure load behavior at this time, and compressor is in low-pressure load shape under the situation
State and be not likely to produce violent chattering phenomenon, can avoid compressor body may cause because of mechanical shock damage or cause to compress
Machine ontology high vibration strikes guard shield or makes oxygenerator other component by failure caused by high vibration.
As shown in figure 3, the detection of power loss module 10 includes a voltage sample circuit 11 and an optical coupling isolation circuit 12,
The voltage sample circuit 11 from the output end voltage of power regulator U6 for being sampled to generate sampling voltage and be sent to
Microprocessor U5, the microprocessor U5 judge whether the AC power source powers off according to sampling voltage；The light-coupled isolation electricity
Road 12 is used for the on-off of the voltage sample circuit according to the input control of the AC power source.
As shown in fig. 6, the optical coupling isolation circuit 12 by optocoupler U1, diode D21, resistance R21, varistor RV21 and
Polar capacitor C21 composition, the voltage sample circuit 11 include sampling resistor R22 and sampling resistor R23.The resistance R21's
The connection of the firewire of one end and AC power source, the anode of the other end connection diode D21 of resistance R21, the cathode of diode D21 connect
The anode of the luminous tube of optocoupler U1 is connect, the cathode of the luminous tube of optocoupler U1 and the zero curve of AC power source connect, varistor RV21
And polar capacitor C21 is parallel between the positive electrode and negative electrode of the luminous tube of the optocoupler U1.One end of the sampling resistor R22 is logical
The photosensitive tube for crossing optocoupler U1 is connected to the output end of the power regulator U6, and the other end of sampling resistor R22 passes through sampling electricity
R23 ground connection is hindered, the connecting node between the sampling resistor R22, sampling resistor R23 is connect with the microprocessor U5.It chooses
Connecting node between the sampling resistor R22, sampling resistor R23 is as voltage test points TP2, when AC power source has electricity,
The photosensitive tube of the optocoupler U1 is connected, and the voltage sample circuit 11 takes electricity from the output end of power regulator U6, by resistance
R22, sampling resistor R23 are divided, and voltage test points TP2 is in high level state；When AC power source power-off, the optocoupler
The photosensitive tube of U1 disconnects, and the voltage sample circuit 11 can not take electricity, voltage test points TP2 from the output end of power regulator U6
In low level state.The microprocessor U5 judges the connection shape of AC power source according to the level state of voltage test points TP2
State.
As shown in figure 4, the battery switching module 20 includes an optical coupling isolation circuit 21 and a relay drive circuit
22, the optical coupling isolation circuit 21 drives the relay drive circuit, the relay under microprocessor U5 control
Driving circuit 22 is in the circuit being connected between the battery BAT and power regulator U6 under the driving of the optical coupling isolation circuit 21
Channel.
As shown in fig. 6, the optical coupling isolation circuit 21 is made of optocoupler U2, resistance R17 and resistance R13, the relay
Driving circuit 22 is by relay switch K1, diode D13, diode D15, NPN triode Q1 1 and resistance R12, the optocoupler U2
Luminous tube anode connect with the microprocessor U5, the cathode of the luminous tube of optocoupler U2 is grounded by resistance R17, optocoupler U2
Photosensitive tube anode connect with the output end of power regulator U6, the cathode of the photosensitive tube of optocoupler U2 is grounded by resistance R13,
The cathode of the photosensitive tube of optocoupler U2 is also connect with the base stage of NPN triode Q1 1, and the emitter of NPN triode Q1 1 passes through resistance
R12 ground connection, the collector of NPN triode Q1 1 are connect with the anode of one end of relay switch K1, diode D15 respectively, relay
The other end of device switch K1, the cathode of diode D15 are connected to the output end of power regulator, and relay switch K1's is public
Terminal contacts are connect with the battery, and the normally opened contact of relay switch K1 is connect with the anode of diode D13, diode D15's
Cathode is connect with the input terminal of the power regulator U6.When the microprocessor U5 detects AC power source power-off, to institute
Anode one high level signal of input of the luminous tube of optocoupler U2 is stated, the base of NPN triode Q1 1 is drawn high in the photosensitive tube conducting of optocoupler U2
Pole tension causes NPN triode Q1 1 to be connected, and the public terminal contacts of relay switch K1 are connect with normally opened contact, and diode D13 is mono-
Continue to power to the oxygen mfg. machine with miniature molecular sieve control system to conducting.Meanwhile the microprocessor U5 passes through connection terminal
It connect with two position four-way solenoid valve 30, is powered according to the currently performed control phase of pressure-variable adsorption cycle program to two four
Magnet valve 30 sends power down protection control instruction, adjusts two position four-way solenoid valve 30 to execute power down protection movement.It needs
It is bright, select NMOS tube to substitute the NPN tri- in the relay drive circuit 22 in the other embodiments of the utility model
Pole pipe can obtain identical technical effect.
As shown in Fig. 2, the oxygen mfg. machine with miniature molecular sieve control system further includes having 40 He of a battery voltage sensing module
One cell charge protection module 50, the battery voltage sensing module 40, for detecting battery BAT end voltage and exporting electricity
Pressure detection signal gives the microprocessor U5, and the microprocessor U5 is defeated when battery BAT end voltage exceeds preset threshold
Charge protection signal out；The cell charge protection module 50 turns for disconnecting the AC-DC according to the charge protection signal
Circuit path between parallel operation U7 and battery BAT, stopping takes from the output end of the AC-DC converter U7 supplies electricity to the battery
BAT charging.
As shown in figure 5, the cell charge protection module 50 includes an optical coupling isolation circuit 51 and a relay driving
Circuit 52, the optical coupling isolation circuit 51 drive the relay drive circuit 52 according to the charge protection signal, it is described after
Electrical apparatus driving circuit 52 disconnects between the AC-DC converter U7 and battery BAT under the driving of the optical coupling isolation circuit 51
Circuit path, stopping takes from the output end of the AC-DC converter U7 supplies electricity to battery BAT charging.
As shown in fig. 6, the battery voltage sensing module 40 is by resistance R01, resistance R02, resistance R03 and amplifier U4 group
At.The optical coupling isolation circuit 51 is made of optocoupler U3, resistance R16 and resistance R15, and the relay drive circuit 52 is by relay
Device switch K0, diode D14, NPN triode Q1 2 and resistance R14, anode and the micro process of the luminous tube of the optocoupler U3
Device connection, the cathode of the luminous tube of optocoupler U3 are grounded by resistance R16, anode and the power regulator U6 of the photosensitive tube of optocoupler U3
Output end connection, the cathode of the photosensitive tube of optocoupler U3 is grounded by resistance R15, the cathode of the photosensitive tube of optocoupler U2 also with NPN
The base stage of triode Q12 connects, and the emitter of NPN triode Q1 2 is grounded by resistance R14, the collector of NPN triode Q1 2
It is connect respectively with the anode of one end of relay switch K0, diode D14, the other end of relay switch K0, diode D14
Cathode is connected to the output end of power regulator U6, and the public terminal contacts of relay switch K0 are connect with the battery BAT, after
The normally-closed contact of electric switch K1 is connect with the output end of AC-DC converter U7.When the microprocessor U5 detects the electricity
When the pond end BAT voltage exceeds preset threshold, anode one high level signal of input of the luminous tube of Xiang Suoshu optocoupler U3, optocoupler U3's
The base voltage that NPN triode Q1 2 is drawn high in photosensitive tube conducting causes NPN triode Q1 2 to be connected, the common end of relay switch K0
Contact and normally-closed contact disconnect, and the battery BAT stops charging.It should be noted that in the other embodiments of the utility model
Middle selection NMOS tube substitutes the NPN triode in the relay drive circuit 52, can obtain identical technical effect.
The above is only the preferred embodiment of the present invention, rather than does limit in any form to the utility model
System.Those skilled in the art can impose various equivalent changes and improvement on the basis of the above embodiments, all to want in right
The equivalent variations or modification done in range are sought, should fall within the protection scope of this utility model.
Claims (10)
1. a kind of oxygen mfg. machine with miniature molecular sieve control system, which is characterized in that include:
One liang of position four-way solenoid valve, is installed on the air delivering pipeline between compressor and adsorbing tower with molecular sieve, for according to micro- place
Manage the on-off of air delivering pipeline between the control instruction control compressor of device and adsorbing tower with molecular sieve；
One AC-DC converter accesses AC power source and provides DC power supply for the oxygen mfg. machine with miniature molecular sieve control system；
One battery is used to provide standby working power for the oxygen mfg. machine with miniature molecular sieve control system；
One power regulator will export stable operating voltage after the adjustment of the voltage of AC-DC converter or battery；
One detection of power loss module, whether the detection AC power source, which powers off and will test result, is sent to microprocessor；
One microprocessor exports a battery switching signal when detecting AC power source power-off, and according to the pressure-variable adsorption period
The currently performed control phase of program sends power down protection control instruction to two position four-way solenoid valves, adjusts two four energizations
Magnet valve is to execute power down protection movement；
It is logical to be connected to the circuit between the battery and power regulator according to the battery switching signal for one battery switching module
Road.
2. oxygen mfg. machine with miniature molecular sieve control system as described in claim 1, which is characterized in that the detection of power loss module packet
It has included:
One voltage sample circuit, for being sampled from the output end voltage of power regulator with generate sampling voltage be sent to it is micro-
Processor, the microprocessor judge whether the AC power source powers off according to sampling voltage；
One optical coupling isolation circuit, the on-off for the voltage sample circuit according to the input control of the AC power source.
3. oxygen mfg. machine with miniature molecular sieve control system as claimed in claim 2, which is characterized in that the optical coupling isolation circuit packet
Include optocoupler U1, diode D21 and resistance R21, the voltage sample circuit includes sampling resistor R22 and sampling resistor R23, described
One end of resistance R21 and the firewire of AC power source connect, the anode of the other end connection diode D21 of resistance R21, diode
The anode of the luminous tube of the cathode connection optocoupler U1 of D21, the cathode of the luminous tube of optocoupler U1 and the zero curve of AC power source connect, institute
The one end for stating sampling resistor R22 is connected to the output end of the power regulator, sampling resistor R22 by the photosensitive tube of optocoupler U1
The other end be grounded by sampling resistor R23, the connecting node between the sampling resistor R22, sampling resistor R23 with it is described micro-
Processor connection.
4. oxygen mfg. machine with miniature molecular sieve control system as described in claim 1, which is characterized in that the battery switching module packet
An optical coupling isolation circuit and a relay drive circuit are included, the optical coupling isolation circuit drives according to the battery switching signal
The relay drive circuit, the relay drive circuit be connected under the driving of the optical coupling isolation circuit battery with
Circuit path between power regulator.
5. oxygen mfg. machine with miniature molecular sieve control system as claimed in claim 4, which is characterized in that the optical coupling isolation circuit packet
Include optocoupler U2, the relay drive circuit switching tube Q11 and relay switch K1, the optocoupler U2 switch according to the battery
Signal drives the switching tube Q11, the switching tube Q11 to control the relay switch K1 movement to be connected to the battery and electricity
Circuit path between the voltage-stablizer of source.
6. oxygen mfg. machine with miniature molecular sieve control system as claimed in claim 5, which is characterized in that the switching tube Q11 is three
Pole pipe or metal-oxide-semiconductor.
7. oxygen mfg. machine with miniature molecular sieve control system as described in claim 1, which is characterized in that the small-size molecular-sieve oxygen
Machine control system further includes having:
One battery voltage sensing module, simultaneously voltage sense signal gives the microprocessor to the detection battery terminal voltage,
The microprocessor exports charge protection signal when the battery terminal voltage exceeds preset threshold；
One cell charge protection module disconnects between the AC-DC converter and battery according to the charge protection signal
Circuit path, stopping takes from the output end of the AC-DC converter supplies electricity to the battery charging.
8. oxygen mfg. machine with miniature molecular sieve control system as claimed in claim 7, which is characterized in that the cell charge protection mould
Block includes an optical coupling isolation circuit and a relay drive circuit, and the optical coupling isolation circuit is according to the charge protection signal
The relay drive circuit is driven, described in the relay drive circuit disconnects under the driving of the optical coupling isolation circuit
Circuit path between AC-DC converter and battery.
9. oxygen mfg. machine with miniature molecular sieve control system as claimed in claim 8, which is characterized in that the optical coupling isolation circuit packet
Optocoupler U3 is included, the relay drive circuit includes switching tube Q12 and relay switch K0, and the optocoupler U3 is according to the charging
Protect signal that the switching tube Q12, the switching tube Q12 is driven to control the relay switch K0 movement to disconnect the AC-
Circuit path between DC converter and battery.
10. a kind of oxygen mfg. machine with miniature molecular sieve includes the compressor, adsorbing tower with molecular sieve, oxygen container being sequentially communicated, feature
Be: the oxygen mfg. machine with miniature molecular sieve further includes just like the described in any item oxygen mfg. machine with miniature molecular sieve controls of claim 1-9
System processed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822041821.6U CN208969478U (en) | 2018-12-06 | 2018-12-06 | A kind of oxygen mfg. machine with miniature molecular sieve and its control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822041821.6U CN208969478U (en) | 2018-12-06 | 2018-12-06 | A kind of oxygen mfg. machine with miniature molecular sieve and its control system |
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| Publication Number | Publication Date |
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| CN208969478U true CN208969478U (en) | 2019-06-11 |
Family
ID=66766188
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822041821.6U Withdrawn - After Issue CN208969478U (en) | 2018-12-06 | 2018-12-06 | A kind of oxygen mfg. machine with miniature molecular sieve and its control system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109375555A (en) * | 2018-12-06 | 2019-02-22 | 深圳市德达康健股份有限公司 | A kind of oxygen mfg. machine with miniature molecular sieve and its control system |
| CN113009852A (en) * | 2021-03-25 | 2021-06-22 | 东风汽车集团股份有限公司 | Start-stop control method and system of vehicle-mounted oxygen generator |
-
2018
- 2018-12-06 CN CN201822041821.6U patent/CN208969478U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109375555A (en) * | 2018-12-06 | 2019-02-22 | 深圳市德达康健股份有限公司 | A kind of oxygen mfg. machine with miniature molecular sieve and its control system |
| CN109375555B (en) * | 2018-12-06 | 2022-02-01 | 深圳市德达医疗科技集团有限公司 | Small molecular sieve oxygen generator and control system thereof |
| CN113009852A (en) * | 2021-03-25 | 2021-06-22 | 东风汽车集团股份有限公司 | Start-stop control method and system of vehicle-mounted oxygen generator |
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Address after: 518000 building 39-1, Dayun software Town, 8288 Longgang Avenue, Henggang street, Longgang District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Deda Medical Technology Group Co.,Ltd. Address before: 518000 building 39-1, Dayun software Town, 8288 Longgang Avenue, Henggang street, Longgang District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN DEDA HEALTH Co.,Ltd. |
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