CN208831213U - Air compressor and control protection circuit thereof - Google Patents
Air compressor and control protection circuit thereof Download PDFInfo
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- CN208831213U CN208831213U CN201820788119.3U CN201820788119U CN208831213U CN 208831213 U CN208831213 U CN 208831213U CN 201820788119 U CN201820788119 U CN 201820788119U CN 208831213 U CN208831213 U CN 208831213U
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- 230000005611 electricity Effects 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 238000001816 cooling Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000005662 electromechanics Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
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Abstract
The embodiment of the application provides an air compressor and a control protection circuit thereof, and the control protection circuit comprises a motor main circuit and an air compressor start-stop loop electrically connected with the motor main circuit, wherein a voltage-controlled switch is connected in series on the air compressor start-stop loop to detect the water pressure in a circulating water path of the air compressor and control the start-stop of the air compressor according to the water pressure. The embodiment of the application can realize fault monitoring of the circulating water system of the air compressor so as to protect the air compressor.
Description
Technical field
This application involves field of air compressor, more particularly, to a kind of air compressor machine and its control protection electric circuit.
Background technique
Air compressor machine, that is, air compressor is a kind of equipment to compressed gas.Air compressor machine has extensive use, such as can
To be conveyed for refrigeration and gas separation, for gas synthesis and polymerization, for gas and as air force etc..
In order to reduce the operating temperature of each component of air compressor machine, reduction wearing- in period prolongs the service life, air compressor machine
Often it is configured with circulation.However, due to noise and pump house the position factors such as more partially, circulation break down after not
Easily discovery to be easy to cause air compressor machine to operate in the case where no cooling and be damaged or burn, and then may influence normal
Production run.
Therefore, how failure monitoring is carried out to the circulation of air compressor machine, it has also become technology urgently to be resolved at present is asked
Topic.
Utility model content
The embodiment of the present application is designed to provide a kind of air compressor machine and its control protection electric circuit, to realize to air compressor machine
Circulation carries out failure monitoring.
In order to achieve the above objectives, on the one hand, the embodiment of the present application provides a kind of control protection electric circuit of air compressor machine, including
Motor main circuit and the air compressor machine start and stop circuit being electrically connected, the air compressor machine start and stop are serially connected with votage control switch on circuit,
With the hydraulic pressure in the circulation waterway for detecting air compressor machine and according to the start and stop of the hydraulic pressure control air compressor machine.
The control protection electric circuit of the embodiment of the present application, the votage control switch include electro connecting pressure gauge.
The control protection electric circuit of the embodiment of the present application, the air compressor machine start and stop are serially connected with time-delay relay on circuit.
The control protection electric circuit of the embodiment of the present application, the motor main circuit include:
Be sequentially connected in series the dynamic circuit connector main contacts in the first breaker, first contactor on three-phase line, electrothermal relay it is dynamic
Close main contacts, air compressor motor；
The dynamic circuit connector main contacts for carrying out the second contactor of star operation for controlling the air compressor motor；
And the dynamic circuit connector main contacts of the third contactor for controlling the air compressor motor progress triangle operation.
The control protection electric circuit of the embodiment of the present application, air compressor machine start and stop circuit include electrical with first breaker
One end of the dynamic circuit breaker auxiliary contact of second breaker of connection, second breaker and the electrothermal relay is electrically connected, institute
The one end of the other end of the dynamic circuit breaker auxiliary contact of electrothermal relay respectively with the first key switch, the votage control switch is stated electrically to connect
It connects, one end of the moving together contact of the other end and the 4th contactor of first key switch is electrically connected, the votage control switch
The other end and the 4th contactor coil one end be electrically connected, the other end of the moving together contact of the 4th contactor with
One end of parallel circuit is electrically connected, and the parallel circuit is assisted touching by the dynamic circuit connector of the second key switch and the first contactor
Point composition, the other end of the parallel circuit respectively with one end of the coil of the first contactor, the third contactor
One end of dynamic circuit breaker auxiliary contact, the second contactor dynamic circuit breaker auxiliary contact one end be electrically connected, the third contactor
The other end of dynamic circuit breaker auxiliary contact and one end of coil of the second contactor be electrically connected, the second contactor it is dynamic
The other end of disconnected auxiliary contact passes through the dynamic circuit connector auxiliary contact of the third contactor and the one of the coil of the third contactor
End is electrically connected, the other end of the coil of the first contactor, the other end of the coil of the second contactor, the third
The other end of the coil of the other end of the coil of contactor and the 4th contactor is electrically connected.
The control protection electric circuit of the embodiment of the present application, the other end of the dynamic circuit breaker auxiliary contact of the third contactor is by prolonging
When relay break contact and one end of coil of the second contactor be electrically connected, and the dynamic circuit breaker of the third contactor
One end of the coil of the other end of auxiliary contact and the time-delay relay is electrically connected, the dynamic circuit connector auxiliary of the third contactor
Contact is in parallel with the moving together contact of the time-delay relay, the other end of the coil of the first contactor, second contact
The other end of the coil of device, the other end of the coil of the third contactor, the 4th contactor coil the other end and
The other end of the coil of the time-delay relay is electrically connected.
On the other hand, the embodiment of the present application also provides a kind of air compressor machine, the air compressor machine has control protection electric circuit, institute
Stating control protection electric circuit includes motor main circuit and the air compressor machine start and stop circuit being electrically connected, air compressor machine start and stop circuit
On be serially connected with votage control switch, with the hydraulic pressure in the circulation waterway for detecting air compressor machine and according to the hydraulic pressure control air compressor machine
Start and stop.
The air compressor machine of the embodiment of the present application, the votage control switch include electro connecting pressure gauge.
The air compressor machine of the embodiment of the present application, the air compressor machine start and stop are serially connected with time-delay relay on circuit.
The air compressor machine of the embodiment of the present application, the motor main circuit include:
Be sequentially connected in series the dynamic circuit connector main contacts in the first breaker, first contactor on three-phase line, electrothermal relay it is dynamic
Close main contacts, air compressor motor；
The dynamic circuit connector main contacts for carrying out the second contactor of star operation for controlling the air compressor motor；
And the dynamic circuit connector main contacts of the third contactor for controlling the air compressor motor progress triangle operation.
The air compressor machine of the embodiment of the present application, air compressor machine start and stop circuit include being electrically connected with first breaker
One end of second breaker, the dynamic circuit breaker auxiliary contact of second breaker and the electrothermal relay is electrically connected, the heat after
The other end of the dynamic circuit breaker auxiliary contact of electric appliance is electrically connected with one end of the first key switch, the votage control switch respectively, described
One end of the moving together contact of the other end of first key switch and the 4th contactor is electrically connected, the other end of the votage control switch
It is electrically connected with coil one end of the 4th contactor, the other end and parallel circuit of the moving together contact of the 4th contactor
One end be electrically connected, the parallel circuit is made of the dynamic circuit connector auxiliary contact of the second key switch and the first contactor,
The other end of the parallel circuit is assisted with the dynamic circuit breaker of one end of the coil of the first contactor, the third contactor respectively
One end of contact, the second contactor one end of dynamic circuit breaker auxiliary contact be electrically connected, the dynamic circuit breaker of the third contactor is auxiliary
One end of the other end of contact and the coil of the second contactor is helped to be electrically connected, the dynamic circuit breaker of the second contactor assists touching
The other end of point is electrically connected by the dynamic circuit connector auxiliary contact and one end of the coil of the third contactor of the third contactor
It connects, the other end of the coil of the first contactor, the other end of the coil of the second contactor, the third contactor
The other end of the coil of the other end of coil and the 4th contactor is electrically connected.
The other end of the air compressor machine of the embodiment of the present application, the dynamic circuit breaker auxiliary contact of the third contactor passes through delay relay
One end of the break contact of device and the coil of the second contactor is electrically connected, and the dynamic circuit breaker of the third contactor assists touching
Point the other end and the time-delay relay coil one end be electrically connected, the dynamic circuit connector auxiliary contact of the third contactor with
The moving together contact of the time-delay relay is in parallel, the line of the other end of the coil of the first contactor, the second contactor
The other end of circle, the other end of the coil of the third contactor, the 4th contactor coil the other end and described prolong
When relay the other end of coil be electrically connected.
As can be seen from the technical scheme provided by the above embodiments of the present application, due to the air compressor machine start and stop circuit of the embodiment of the present application
On be serially connected with votage control switch, can be used for detecting the hydraulic pressure in the circulation waterway of air compressor machine and according to the hydraulic pressure control pneumatics
The start and stop of machine；When the circulation of air compressor machine works normally, the hydraulic pressure in circulation should be higher than that pressure threshold, voltage-controlled
Switch is in closed state, and air compressor machine operates normally at this time；When circulation failure, hydraulic pressure in circulation can under
Drop, when the hydraulic pressure in circulation is dropped to no more than pressure threshold, votage control switch is disconnected, and air compressor machine stops automatically at this time
Fortune.Therefore the embodiment of the present application may be implemented to carry out failure monitoring to the circulation of air compressor machine, to prevent air compressor machine
It operates and is damaged in the case where no cooling, achieved the purpose that protect air compressor machine.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The some embodiments recorded in application, for those of ordinary skill in the art, in the premise of not making the creative labor property
Under, it is also possible to obtain other drawings based on these drawings.In the accompanying drawings:
Fig. 1 is the control protection electric circuit of air compressor machine in one embodiment of the application；
Fig. 2 is the control protection electric circuit of air compressor machine in another embodiment of the application.
Specific embodiment
In order to make those skilled in the art better understand the technical solutions in the application, below in conjunction with the application reality
The attached drawing in example is applied, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described implementation
Example is merely a part but not all of the embodiments of the present application.Based on the embodiment in the application, this field is common
The application protection all should belong in technical staff's every other embodiment obtained without creative efforts
Range.Such as in being described below, second component is formed above the first component, may include the first component and second component
It can also include the first component and second component in a manner of non-direct contact (i.e. the with the embodiment that the direct way of contact is formed
Can also include additional component between one component and second component) embodiment etc. that is formed.
Moreover, for ease of description, some embodiments of the application can be used such as " in ... top ", " ... under ",
The spatially relative terms such as " top ", " lower section ", with description such as each element shown in the drawings of embodiment or component and another
Relationship between (or other) element or component.It should be understood that space is opposite other than the orientation described in the attached drawing
Term also aims to the different direction including device in use or operation.If such as the device in attached drawing is reversed, and is described
For the element or component of " " other elements or component " below " or " under ", it will then be positioned as " " other elements or portion
Part " top " or " on ".
There is control protection electric circuit in the air compressor machine of the embodiment of the present application, which may include the main electricity of motor
Road and the air compressor machine start and stop circuit being electrically connected, the air compressor machine start and stop can be serially connected with votage control switch on circuit, to be used for
Detect the hydraulic pressure in the circulation waterway of air compressor machine and according to the start and stop of the hydraulic pressure control air compressor machine.Wherein, the pressure of votage control switch
Power probe should go deep into circulation waterway, in order to acquire the hydraulic pressure of circulation waterway.It is described in one exemplary embodiment of the application
Votage control switch for example can be electro connecting pressure gauge.It, before actual use can be previously according to needs by taking electro connecting pressure gauge as an example
Pressure threshold is set, such as the setting of pressure threshold can be according to caused by the lift of the water pump in the circulation of air compressor machine
Hydraulic pressure is arranged.When circulation works normally, the hydraulic pressure in circulation should be higher than that pressure threshold, electric contact pressure
The switch of table is in closed state, and air compressor machine operates normally at this time；Hydraulic pressure when circulation failure, in circulation
It can decline, when the hydraulic pressure in circulation is dropped to no more than pressure threshold, the switch of electro connecting pressure gauge is disconnected, at this time
Air compressor machine is stopped transport automatically, carries out failure monitoring to the circulation of air compressor machine to realize, it is therefore prevented that air compressor machine is not having
It operates and is damaged in the case where cooling, achieve the purpose that protect air compressor machine.
Refering to what is shown in Fig. 1, the motor main circuit 100 may include being sequentially connected in series in three in one embodiment of the application
Dynamic circuit connector main contacts, the pneumatics of the dynamic circuit connector main contacts of the first circuit breaker Q F1, first contactor KM on phase line, electrothermal relay FR
Electromechanical machine M, the second contactor KM that star operation is carried out for controlling the air compressor motor MYDynamic circuit connector main contacts, Yi Jiyong
In the third contactor KM for controlling the air compressor motor M progress triangle operationΔDynamic circuit connector main contacts.
Please continue to refer to shown in Fig. 1, in one exemplary embodiment of the application, air compressor machine start and stop circuit 200 can be with
Including the second circuit breaker Q F2, the second circuit breaker Q F2 and the electrothermal relay FR being electrically connected with first breaker
One end of dynamic circuit breaker auxiliary contact be electrically connected, the other end of the dynamic circuit breaker auxiliary contact of the electrothermal relay FR presses with first respectively
Key switch SB1, the electro connecting pressure gauge D one end be electrically connected, the first key switch SB1The other end connect with the 4th
Tentaculum KM2One end of moving together contact be electrically connected, the other end of the electro connecting pressure gauge D and the 4th contactor KM2's
Coil one end is electrically connected, the 4th contactor KM2Moving together contact the other end and parallel circuit one end be electrically connected,
The parallel circuit is by the second key switch SB2And the dynamic circuit connector auxiliary contact composition of the first contactor KM, the electricity in parallel
The other end on road respectively with one end of the coil of the first contactor KM, the third contactor KMΔDynamic circuit breaker auxiliary contact
One end, the second contactor KMYDynamic circuit breaker auxiliary contact one end be electrically connected, the third contactor KMΔDynamic circuit breaker
The other end of auxiliary contact and the second contactor KMYCoil one end be electrically connected, the second contactor KMYIt is dynamic
The other end of disconnected auxiliary contact passes through the third contactor KMΔDynamic circuit connector auxiliary contact and the third contactor KMΔLine
One end of circle is electrically connected, the other end of the coil of the first contactor KM, the second contactor KMYCoil it is another
End, the third contactor KMΔCoil the other end and the 4th contactor KM2The other end of coil be electrically connected at
Together.
In the embodiment of the present application, above-mentioned electro connecting pressure gauge D has low level output and high-order output both of which.In this Shen
High-order output mode please can be used in embodiment, be exported when variable exceeds given threshold.In the first circuit breaker Q F1, second
Circuit breaker Q F2 and the first key switch SB1In the state of closure, in anhydrous circulation, the metering pointer of electro connecting pressure gauge D exists
Zero-bit is exported without electric signal, the 4th contactor KM at this time2Moving together contact maintain disconnect normality, i.e. the 4th contactor KM2It is dynamic
Conjunction contact does not work；The second key switch SB is pressed at this time2, air compressor machine start and stop circuit 200 is reactionless, can not start pneumatics electromechanics
Machine M.Only when the circulation waterway of air compressor machine is opened, and hydraulic pressure force value is more than the given threshold of electro connecting pressure gauge D, electric contact
Pressure gauge D generates electric signal output, i.e., electro connecting pressure gauge D makes the 4th contactor KM2Coil obtain electric, the 4th contactor of KM2
KM2Moving together contact closure；The second key switch SB is pressed at this time2,Air compressor motor M.Electro connecting pressure gauge D can also be in sky
It is protected during compressor operation；When the hydraulic pressure force value of the circulation waterway of air compressor machine is equal to or less than setting value, electric contact
Pressure gauge D makes the 4th contactor KM2Coil losing electricity, the 4th contactor KM of KM22Moving together contact disconnect, air compressor machine stop work
Make.
In one embodiment of the application, the air compressor machine start and stop can also be serially connected with time-delay relay on circuit, to realize
The automatic switchover of the star operating status and triangle operating status of air compressor machine.In one exemplary embodiment of the application, concatenation
There is the air compressor machine start and stop circuit 200 of time-delay relay can be as shown in Figure 2.In Fig. 2, third contactor KMΔDynamic circuit breaker assist touching
The other end of point can pass through the break contact and second contactor KM of time-delay relay KTYCoil one end be electrically connected, and
The third contactor KMΔOne end of the other end and the coil of the time-delay relay KT of dynamic circuit breaker auxiliary contact electrically connect
It connects, the third contactor KMΔDynamic circuit connector auxiliary contact it is in parallel with the moving together contact of the time-delay relay KT, described first connects
The other end of the coil of tentaculum KM, the second contactor KMYCoil the other end, the third contactor KMΔCoil
The other end, the 4th contactor KM2Coil the other end and the time-delay relay KT coil the other end it is electrical
It links together.
In the embodiment of the present application, in the first circuit breaker Q F1, the second circuit breaker Q F2 and the first key switch SB1Closure
Under state, when the circulation waterway of air compressor machine is opened, and when hydraulic pressure force value is more than the given threshold of electro connecting pressure gauge D, when pressing
Second key switch SB2, the 4th contactor KM2Coil obtain electric, the 4th contactor KM2Moving together contact be attracted and formed self-locking；
At this point, second contactor KMYCoil obtain electric, second contactor KMYDynamic circuit connector auxiliary contact closure, second contactor KMYIt is dynamic
Main contacts closure is closed, air compressor motor M carries out star operation；Meanwhile the coil of time-delay relay KT obtains electric second contactor KMY
Dynamic circuit breaker auxiliary contact disconnect and time-delay relay KT start timing；When timing time then, the dynamic circuit connector of time-delay relay KT is touched
The break contact of point closure and time-delay relay KT disconnect, second contactor KMYCoil losing electricity, second contactor KMYDynamic circuit breaker
Auxiliary contact reset, second contactor KMYDynamic circuit breaker main contacts reset, third contactor KMΔCoil obtain electric, third contactor
KMΔDynamic circuit connector auxiliary contact closure and third contactor KMΔDynamic circuit breaker auxiliary contact disconnect, the coil losing electricity of time-delay relay KT
It resets, third contactor KMΔDynamic circuit connector main contacts closure, air compressor motor M carry out triangle operation.
The convenience of description, describes with function to be divided into various units when apparatus above and describes respectively.Certainly, implementing this Shen
Please when the function of each unit can be realized in same or multiple hardware.
It should also be noted that, the terms "include", "comprise" or its any other variant are intended to nonexcludability
Include, so that device or equipment including a series of elements not only include those elements, but also including not clear
The other element listed, or further include for this device or the intrinsic element of equipment.In the feelings not limited more
Under condition, the element that is limited by sentence "including a ...", it is not excluded that in the device or equipment for including the element also
There are other identical elements.
All the embodiments in this specification are described in a progressive manner, the highlights of each of the examples are with
The difference of other embodiments, the same or similar parts between the embodiments can be referred to each other.
The above description is only an example of the present application, is not intended to limit this application.For those skilled in the art
For, various changes and changes are possible in this application.All any modifications made within the spirit and principles of the present application are equal
Replacement, improvement etc., should be included within the scope of the claims of this application.
Claims (12)
1. a kind of control protection electric circuit of air compressor machine, which is characterized in that including motor main circuit and the pneumatics being electrically connected
Machine start and stop circuit, the air compressor machine start and stop are serially connected with votage control switch on circuit, in the circulation waterway for detecting air compressor machine
Hydraulic pressure and according to the start and stop of the hydraulic pressure control air compressor machine.
2. control protection electric circuit as described in claim 1, which is characterized in that the votage control switch includes electro connecting pressure gauge.
3. control protection electric circuit as described in claim 1, which is characterized in that the air compressor machine start and stop are serially connected with delay on circuit
Relay.
4. control protection electric circuit as described in claim 1, which is characterized in that the motor main circuit includes:
It is sequentially connected in series the dynamic circuit connector master of dynamic circuit connector main contacts in the first breaker, first contactor on three-phase line, electrothermal relay
Contact, air compressor motor；
The dynamic circuit connector main contacts for carrying out the second contactor of star operation for controlling the air compressor motor；
And the dynamic circuit connector main contacts of the third contactor for controlling the air compressor motor progress triangle operation.
5. control protection electric circuit as claimed in claim 4, which is characterized in that air compressor machine start and stop circuit includes and described
One end of the dynamic circuit breaker auxiliary contact of the second breaker that one breaker is electrically connected, second breaker and the electrothermal relay
Be electrically connected, the other ends of the dynamic circuit breaker auxiliary contact of the electrothermal relay respectively with the first key switch, the votage control switch
One end is electrically connected, and one end of the moving together contact of the other end and the 4th contactor of first key switch is electrically connected, institute
Coil one end of the other end and the 4th contactor of stating votage control switch is electrically connected, the moving together contact of the 4th contactor
The other end and one end of parallel circuit be electrically connected, the parallel circuit is by the second key switch and the first contactor
Dynamic circuit connector auxiliary contact composition, the other end of the parallel circuit respectively with one end of the coil of the first contactor, described the
One end of the dynamic circuit breaker auxiliary contact of three contactors, one end of the dynamic circuit breaker auxiliary contact of the second contactor are electrically connected, described
One end of the coil of the other end and second contactor of the dynamic circuit breaker auxiliary contact of third contactor is electrically connected, and described second
The dynamic circuit connector auxiliary contact and the third contactor that the other end of the dynamic circuit breaker auxiliary contact of contactor passes through the third contactor
Coil one end be electrically connected, the other end of the coil of the first contactor, the second contactor coil it is another
End, the other end of coil of the third contactor and the other end of coil of the 4th contactor are electrically connected.
6. control protection electric circuit as claimed in claim 5, which is characterized in that the dynamic circuit breaker auxiliary contact of the third contactor
The other end is electrically connected by one end of the break contact of time-delay relay and the coil of the second contactor, and the third
One end of the coil of the other end and time-delay relay of the dynamic circuit breaker auxiliary contact of contactor is electrically connected, the third contact
The dynamic circuit connector auxiliary contact of device are in parallel with the moving together contact of the time-delay relay, the other end of the coil of the first contactor,
The other end of the coil of the second contactor, the other end of the coil of the third contactor, the 4th contactor line
The other end of the coil of the other end of circle and the time-delay relay is electrically connected.
7. a kind of air compressor machine, the air compressor machine has control protection electric circuit, which is characterized in that the control protection electric circuit includes electricity
Owner's circuit and the air compressor machine start and stop circuit being electrically connected, the air compressor machine start and stop are serially connected with votage control switch on circuit, with
The hydraulic pressure in circulation waterway for detecting air compressor machine and according to the start and stop of the hydraulic pressure control air compressor machine.
8. air compressor machine as claimed in claim 7, which is characterized in that the votage control switch includes electro connecting pressure gauge.
9. air compressor machine as claimed in claim 7, which is characterized in that the air compressor machine start and stop are serially connected with delay relay on circuit
Device.
10. air compressor machine as claimed in claim 7, which is characterized in that the motor main circuit includes:
It is sequentially connected in series the dynamic circuit connector master of dynamic circuit connector main contacts in the first breaker, first contactor on three-phase line, electrothermal relay
Contact, air compressor motor；
The dynamic circuit connector main contacts for carrying out the second contactor of star operation for controlling the air compressor motor；
And the dynamic circuit connector main contacts of the third contactor for controlling the air compressor motor progress triangle operation.
11. air compressor machine as claimed in claim 10, which is characterized in that air compressor machine start and stop circuit includes breaking with described first
One end of the dynamic circuit breaker auxiliary contact of the second breaker that road device is electrically connected, second breaker and the electrothermal relay is electrical
Connection, the other end of the dynamic circuit breaker auxiliary contact of electrothermal relay one end with the first key switch, the votage control switch respectively
It is electrically connected, one end of the moving together contact of the other end and the 4th contactor of first key switch is electrically connected, the pressure
Control switch the other end and the 4th contactor coil one end be electrically connected, the moving together contact of the 4th contactor it is another
One end and one end of parallel circuit are electrically connected, and the parallel circuit is by the second key switch and the dynamic circuit connector of the first contactor
Auxiliary contact composition, the other end of the parallel circuit connect with one end of the coil of the first contactor, the third respectively
One end of the dynamic circuit breaker auxiliary contact of tentaculum, one end of the dynamic circuit breaker auxiliary contact of the second contactor are electrically connected, the third
One end of the coil of the other end and second contactor of the dynamic circuit breaker auxiliary contact of contactor is electrically connected, second contact
The other end of the dynamic circuit breaker auxiliary contact of device passes through the dynamic circuit connector auxiliary contact of the third contactor and the line of the third contactor
One end of circle is electrically connected, the other end of the coil of the first contactor, the other end of the coil of the second contactor, institute
The other end for stating the other end of the coil of third contactor and the coil of the 4th contactor is electrically connected.
12. air compressor machine as claimed in claim 11, which is characterized in that the dynamic circuit breaker auxiliary contact of the third contactor it is another
End is electrically connected by one end of the break contact of time-delay relay and the coil of the second contactor, and the third contacts
One end of the coil of the other end and time-delay relay of the dynamic circuit breaker auxiliary contact of device is electrically connected, the third contactor
Dynamic circuit connector auxiliary contact are in parallel with the moving together contact of the time-delay relay, the other end of the coil of the first contactor, described
The other end of the coil of second contactor, the other end of the coil of the third contactor, the 4th contactor coil
The other end of the coil of the other end and the time-delay relay is electrically connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820788119.3U CN208831213U (en) | 2018-05-24 | 2018-05-24 | Air compressor and control protection circuit thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820788119.3U CN208831213U (en) | 2018-05-24 | 2018-05-24 | Air compressor and control protection circuit thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208831213U true CN208831213U (en) | 2019-05-07 |
Family
ID=66304705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820788119.3U Active CN208831213U (en) | 2018-05-24 | 2018-05-24 | Air compressor and control protection circuit thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208831213U (en) |
-
2018
- 2018-05-24 CN CN201820788119.3U patent/CN208831213U/en active Active
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