CN208763865U - Starting protection circuit and starting cabinet for air-conditioner set - Google Patents
Starting protection circuit and starting cabinet for air-conditioner set Download PDFInfo
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- CN208763865U CN208763865U CN201821171273.2U CN201821171273U CN208763865U CN 208763865 U CN208763865 U CN 208763865U CN 201821171273 U CN201821171273 U CN 201821171273U CN 208763865 U CN208763865 U CN 208763865U
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Abstract
This application involves a kind of starting protection circuits for air-conditioner set and starting cabinet, including starting control loop, job control circuit and delays time to control circuit.Starting control loop includes starter, start and stop exciting bank and the normally closed start stop switch device being connected in series；Job control circuit includes working control circuit, and start and stop exciting bank is for controlling working control circuit, and working control circuit is for starting or stoping workload；Delays time to control circuit includes time-delayed activation device, and start and stop exciting bank is for controlling time-delayed activation device, and time-delayed activation device is for controlling start stop switch device.Starting protection circuit provided by the present application; pass through delays time to control circuit in parallel by starting control loop; pass through interval time-delay relay and its controllable time delay contact; provided with the most short shutdown duration being again started up after compressor shutdown, so as to avoid compressor because control centre's failure is damaged caused by being again started up in a short time.
Description
Technical field
This application involves control devices, more particularly, to the starting protection circuit of air-conditioner set compressor and starting cabinet.
Background technique
In the use process of air-conditioner set, the operation for starting and stopping compressor is common operation.In air-conditioner set
Start the control system being equipped in cabinet for starting/stopping compressor, generally includes control centre and starter.In air conditioner
In the use process of group, it can be opened by control centre to starter sending by the way of manual operation or automatic control
Dynamic/stop signal, starter receive and start or stop compressor by corresponding control circuit after starting/stop signal.
Utility model content
Within air-conditioning systems, after compressor shutdown, need to keep the shutdown status of a period of time, to ensure that compressor is complete
Next starting is carried out after coming to a complete stop and lubricating again.So control centre can be arranged one in the control loop of air-conditioner set starting cabinet
Fixed downtime, compressor shutdown for a period of time after, can just issue enabling signal to start compressor.But it invents
People has found by observation and analysis: when certain components of control centre break down, as relay contact shake will lead to
It issues enabling signal again in a relatively short period of time, the feelings that compressor is insufficient in not yet dead halt or downtime can be made
Start once more under condition, compressor is easy to cause seriously to damage.Common fault secure circuit is also difficult to detect control centre
The such failure occurred.Therefore inventors have found that when control centre breaks down, it may be difficult to guarantee the necessary shutdown of compressor
Time.Although can easier guarantee the downtime of compressor by writing program, cost of implementation is higher, reliability
Also poor.
Starting protection circuit provided by the present application is passed through by delays time to control circuit in parallel by starting control loop
It is spaced time-delay relay and its controllable time delay contact, provided with the shortest delay time being again started up after compressor shutdown, thus
Avoid the case where compressor is again started up within shortest delay time generation.In addition, starting protection circuit provided by the present application
It is matched with control centre, can also realize the automatic starting of compressor.
On the one hand, the application provides a kind of starting protection circuit, comprising: starts control loop, job control circuit and prolongs
When control loop；The starting control loop includes starter, start and stop exciting bank and start stop switch device, wherein described
Starter, the start and stop exciting bank and the start stop switch device are connected in series to form series via, institute
It is normally closed for stating start stop switch device；The job control circuit includes working control circuit, wherein the start and stop exciting bank
For controlling the working control circuit, the working control circuit is for starting or stoping workload；The delays time to control
Circuit includes time-delayed activation device, wherein the start and stop exciting bank swashs for controlling the time-delayed activation device, the delay
Device is encouraged for controlling the start stop switch device.
According to above-mentioned starting protection circuit, the starter, which receives, to be connected the starting after enabling signal and controls back
Road is to motivate the start and stop exciting bank.
According to above-mentioned starting protection circuit, the starting control loop, the job control circuit and delay control
Circuit processed is connected in parallel to form alternate path, and there are two connecting pins for the alternate path tool, is respectively connected to control
The two poles of the earth of power supply processed.
According to above-mentioned starting protection circuit, the starting protection circuit includes the first relay, first relay
Including the first excitation coil, the first normally opened contact and the second normally-closed contact, wherein the start and stop exciting bank be described first after
First excitation coil of electric appliance；The working control circuit includes the combined floodgate circuit and opening circuit being connected in parallel；The combined floodgate
Circuit includes the closing coil being connected in series and the first normally opened contact of first relay, and the closing coil obtains electric Shi Qi
Move the workload；The opening circuit includes the opening coil being connected in series and the second normally closed touching of first relay
Point, the opening coil stop the workload when obtaining electric；Wherein, when the first excitation coil of first relay obtains electric
The first normally opened contact of first relay is connected so that the closing coil obtains electric, and disconnects first relay
The second normally-closed contact so that the opening coil power loss.
According to above-mentioned starting protection circuit, the starting protection circuit includes the first relay, first relay
Including the first excitation coil and third normally-closed contact, wherein the start and stop exciting bank swashs for the first of first relay
Encourage coil；The delays time to control circuit further includes the third for first relay being connected in series with the time-delayed activation device
Normally-closed contact；Wherein, the third that first relay is connected when the first excitation coil power loss of first relay is normally closed
First excitation coil of contact, first relay disconnects the third normally-closed contact of first relay when obtaining electric.
According to above-mentioned starting protection circuit, the starting protection circuit includes the first interval time-delay relay, and described the
One interval time-delay relay includes third excitation coil and normally closed delayed contact, wherein the time-delayed activation device is described the
The third excitation coil of one interval time-delay relay, the start stop switch device are the normally closed of first interval time-delay relay
Delayed contact；Wherein, first interval is disconnected when the third excitation coil of first interval time-delay relay obtains electric immediately
The normally closed delayed contact of time-delay relay, and the described first normally closed delay for being spaced time-delay relay is connected after the predetermined time
Contact.
According to above-mentioned starting protection circuit, the starting protection circuit include second interval time-delay relay and second after
Electric appliance, wherein second interval time-delay relay includes the 4th excitation coil and normally opened delayed contact, second relay
Including the second excitation coil and the 4th normally-closed contact；The start stop switch device is the 4th normally closed touching of second relay
Point；The time-delayed activation device includes the 4th excitation coil of second interval time-delay relay, second interval delay
Second excitation coil of the normally opened delayed contact of relay and second relay, wherein the second of second relay
Excitation coil and it is described second interval time-delay relay normally opened delayed contact be connected in series after with it is described second interval delay after
4th excitation coil of electric appliance is connected in parallel；Wherein, the 4th excitation coil of second interval time-delay relay obtains electric Shi Li
Connect it is described second interval time-delay relay normally opened delayed contact so that second relay the second excitation coil
It is electric, and disconnect after the predetermined time second interval time-delay relay normally opened delayed contact so that described second after
Second excitation coil power loss of electric appliance；And the second excitation coil of second relay disconnects second relay when obtaining electric
4th normally-closed contact of device, when the second excitation coil power loss of second relay, connect the 4th of second relay often
Closed contact.
According to above-mentioned starting protection circuit, the duration that the start stop switch device is in an off state is arranged to described
The most short shutdown duration of workload.
According to above-mentioned starting protection circuit, the workload is compressor.
On the other hand, the application also provides a kind of starting cabinet for air-conditioner set, comprising: control centre, for issuing
Enabling signal；And above-mentioned compressor start protects circuit, wherein starter is for receiving enabling signal.
According to above-mentioned starting cabinet, further includes: failure protecting device, for controlling working control circuit with during operation
Stop the compressor of air-conditioner set when breaking down.
Detailed description of the invention
When following detailed description is read in conjunction with the figure, the starting protection circuit of the application will be become more fully understood from,
In entire attached drawing, identical appended drawing reference represents identical element.
Fig. 1 is the schematic diagram of starting protection circuit in the application.
Fig. 2A -2B is the schematic diagram of the first relay and the second relay in the application.
Fig. 2 C-2D is the schematic diagram of the first interval time-delay relay and the second interval time-delay relay in the application.
Fig. 3 A-3C is the schematic diagram of the different embodiments of the starting protection circuit of Fig. 1.
Specific embodiment
The various specific embodiments of the application are described below with reference to the attached drawing for constituting this specification a part.
In the following figures, same element uses same drawing number, and similar element uses similar drawing number, to avoid weight
Multiple description.
Fig. 1 shows the schematic structure of 100 one embodiment of starting protection circuit in the application.As shown in Figure 1, this Shen
Please in starting protection circuit 100 include starting control loop 110, job control circuit 120 and delays time to control circuit 130.Starting
Control loop 110, job control circuit 120 and delays time to control circuit 130 are connected in parallel, and to form tool, there are three the parallel connections of branch
Access, there are two connecting pins 101,102 for alternate path tool, are respectively connected to the two poles of the earth (anode and cathode) of control power supply.
Starting control loop 110 includes starter 111, start and stop exciting bank 112 and start stop switch device 113.Starting
Device 111, start and stop exciting bank 112 and start stop switch device 113 are connected in series to form series via, wherein start stop switch device
113 be normally closed.Start stop switch device 113 can be connected in series in starter 111 and start and stop exciting bank 112 in Fig. 1
Between, but start stop switch device 113 also can be set in series via before starter 111 or setting is logical in series connection
In road behind start and stop exciting bank 112.
Starter 111 receives from control centre 103 and starts or stops signal, and respectively turns on or disconnect starting control
Part of the circuit 110 processed at starter 111.Starter 111 includes corresponding signal receiving device and switching device, can
To be realized using various ways.In one embodiment, control centre 103 can issue difference to starter 111
Start or stop signal (such as high level indicate enabling signal, low level indicate stop signal), starter 111, which receives, to be opened
Dynamic signal is connected to starting control loop 110, receives stop signal and disconnects starting control loop 110.In another implementation
In example, control centre 103 can continuously send out to starter or stop certain signal of sending using as starting or stoping
Signal (such as continuously sending out certain level indicates enabling signal, stops issuing level expression stop signal), starter 111 receives
It is connected to starting control loop 110 to this kind of signal, this kind of signal is not received and disconnects starting control loop 110.
Job control circuit 120 includes working control circuit 121.Working control circuit 121 is for controlling workload 105
Working condition, such as workload 105 is connected to or is disconnected to start or stop workload 105 with working power.Start and stop swash
Device 112 is encouraged by controlling working control circuit 121 to control the start and stop working condition of workload 105.In air-conditioner set,
Main workload 105 is compressor 105.
Delays time to control circuit 130 includes time-delayed activation device 131.Time-delayed activation device 131 is for controlling start stop switch dress
Being connected to for 113 disconnection and delay is set, and then controls the starting disconnection of control loop 110 and being connected to for delay.
The starting protection electricity of the application is described for below using the compressor of air-conditioner set 105 as workload 105
The course of work on road 100.It is understood that workload 105 is also possible to other all kinds of electrical equipments.
Control centre 103 in the starting cabinet of air-conditioner set, can mode manually or automatically to starter 111
Issue enabling signal.Before control centre 103 does not issue enabling signal, start stop switch device 113 is connected to (i.e. normally closed), starting
Device 111 disconnects starting control loop 110.
When control centre 103 issues enabling signal, starter 111 receives i.e. connection starting control after enabling signal
Circuit 110, to connect exciting current, in series via to motivate start and stop exciting bank 112.Then, start and stop exciting bank
Respective switch contact (being not shown in Fig. 1, referring to Fig. 3 A-3C) in 112 manipulation working control circuits 121, to start compressor
105。
When control centre 103 issues stop signal (or when stopping issuing enabling signal), starter 111 disconnects starting
Control loop 110, exciting current disappear at start and stop exciting bank 112.Then, due to the disappearance of exciting current, start and stop excitation
Device 112 manipulates the respective switch contact (being not shown in Fig. 1, referring to Fig. 3 A-3C) in working control circuit 121, to stop pressing
Contracting machine 105.Also, start and stop exciting bank 112 simultaneously to time-delayed activation device 131 issue control signal (or Electromagnetic Control letter
Number), so that time-delayed activation device 131 disconnects immediately and starts to carry out delays time to control to start stop switch device 113, so that pre-
In the fixed period (such as in 20 seconds), even if starter 111 receives enabling signal, starting control loop 110 will not
It is switched on, because start stop switch device 113 is to be in an off state；It is being more than time-delayed activation device 131 after predetermined time period
Start stop switch device 113 is connected, if at this moment starter 111 receives enabling signal again and can be connected to starting control loop
110。
When start stop switch device 113 is in an off state, starting control loop 110 is similarly in an off state.?
During this, even if control centre 103 issues enabling signal again, exciting current can not also be generated by starting in control loop 110
Start and stop exciting bank 112 is motivated, so that compressor 105 can not be started.In this way, compressor 105 would not be in not yet dead halt
Or downtime it is insufficient in the case where start once more.It can according to need to preset start stop switch device 113 and be in and break
The duration of open state, such as set compressor 105 for the duration that start stop switch device 113 is in an off state and be again started up institute
The most short shutdown duration or safe shutdown duration (such as 20 seconds) needed.After the time interval of setting, start stop switch device 113 is connect
Logical, starting control loop 110 is restored to initial connected state.It at this moment, can when control centre 103 issues enabling signal again
Normal starting compressor 105.
The starting protection circuit 100 of the application can also realize oneself of compressor 105 by the cooperation with control centre 103
Dynamic starting.The time interval that start stop switch device 113 is in an off state is set as starting automatically after compressor 105 is shut down
Time interval, and control centre 103 is set as issuing enabling signal when start stop switch device 113 is connected or continuously sending out opening
Dynamic signal, can be realized compressor 105 and starts automatically behind setting time interval.
In addition, further including failure protecting device 104 in starting cabinet, for controlling working control circuit 121.Work as compressor
105 when breaking down in the process of running, and failure protecting device 104 can detecte failure and occur and to working control circuit
121 issue fault-signal, manipulate the respective switch contact (being not shown in Fig. 1, referring to Fig. 3 A-3C) in working control circuit 121,
To stop compressor.
Fig. 2A -2B shows the schematic structure of the first relay 310 and the second relay 320 in the application.First after
Common electromagnetic relay, such as 3TH8244 model can be used in electric appliance 310 and the second relay 320.First relay 310
An excitation coil and at least one controllable contact are respectively included with the second relay 320, electric and mistake is obtained by excitation coil
Electricity switches the on off operating mode of controllable contact.The original state of controllable contact, which can according to need, is set as normally opened or normally closed
's.
In the embodiment of Fig. 2A, the first relay 310 has first excitation coil 210 and three controllable contacts
211,212,213, wherein the first normally opened contact 211 be it is normally opened, the second normally-closed contact 212 and third normally-closed contact 213 are normal
It closes.When first excitation coil 210 obtains electric, the first normally opened contact 211 is connected, the second normally-closed contact 212 is disconnected and third is normally closed
Contact；When the first 210 power loss of excitation coil, the first normally opened contact 211 is disconnected, the second normally-closed contact 212 is connected and third is normally closed
Contact.
In the embodiment of Fig. 2 B, the second relay 320 has second excitation coil 220 and a controllable contact
221, wherein the 4th normally-closed contact 221 is normally closed.When second excitation coil 220 obtains electric, the 4th normally-closed contact 221 is disconnected；The
When two 220 power loss of excitation coil, the 4th normally-closed contact 221 is connected.
Fig. 2 C-2D shows the first interval time-delay relay 330 and second in the application and is spaced showing for time-delay relay 340
Meaning property structure.The time relay be can before, during or after the timing cycle of setting closing or opening contact relay
Device is a kind of device for time management.The first interval time-delay relay 330 and the second interval delay relay in the application
Device 340 is one kind of the time relay, such as ST3PGB model.First interval time-delay relay 330 and second interval delay after
Electric appliance 340 respectively includes an excitation coil and at least one controllable time delay contact, and when excitation coil obtains electric, switching can immediately
The on off operating mode of delayed contact is controlled, and returns to original state the on off operating mode of controllable time delay contact after the predetermined time.It can
The original state of control delayed contact, which can according to need, is set as normally opened or normally closed.
In the embodiment of Fig. 2 C, the first interval time-delay relay 330 can with a third excitation coil 230 and one
Delayed contact 231 is controlled, wherein normally closed delayed contact 231 is normally closed.When third excitation coil 230 obtains electric, disconnect immediately normally closed
Delayed contact 231, and be followed by usually closing delayed contact 231 in the predetermined time；Third excitation coil 230 it is electric after by pre- timing
Between again power loss when, normally closed delayed contact 231 remains turned on.
In the embodiment of Fig. 2 D, the second interval time-delay relay 340 can with the 4th excitation coil 240 and one
Delayed contact 242 is controlled, wherein normally opened delayed contact 242 is normally opened.When 4th excitation coil 240 obtains electric, connect immediately normally opened
Delayed contact 242, and normally opened delayed contact 242 is disconnected after the predetermined time；4th excitation coil 240 it is electric after by pre- timing
Between again power loss when, normally opened delayed contact 242 remains off.
Fig. 3 A shows the schematic structure of one embodiment of the starting protection circuit 100 of Fig. 1, for showing starting
Protect more specific details in circuit 100.As shown in Figure 2 A, starting protection circuit 100 includes the first relay 310 (referring to figure
2A).And the first relay 310 further comprises the first excitation coil 210, the first normally opened contact 211, the second normally-closed contact 212
With third normally-closed contact 213, wherein the first excitation coil 210 of the first relay 310 is as the excitation of start and stop shown in Fig. 1
The embodiment of device 112.
In figure 3 a, working control circuit 121 includes the combined floodgate circuit 122 and opening circuit 123 being connected in parallel.Close a floodgate electricity
Road 122 includes the closing coil 201 being connected in series and the first normally opened contact 211 of the first relay 310, and closing coil 201 obtains
Start compressor 105 when electric.Opening circuit 123 second including the opening coil 202 and the first relay 310 that are connected in series is normal
Closed contact 212 stops compressor 105 when opening coil 202 obtains electric.When first excitation coil 210 of the first relay 310 obtains electric
The first normally opened contact 211 of the first relay 310 is connected so that closing coil 201 must be electric, and disconnects the first relay 310
The second normally-closed contact 212 so that 202 power loss of opening coil, to start compressor 105.
Delays time to control circuit 130 includes that the third for time-delayed activation device 131 and the first relay 310 being connected in series is normally closed
Contact 213.When starter 111 disconnects starting control loop 110 according to stop signal, the first of the first relay 310 swashs
210 power loss of coil is encouraged, connects the third normally-closed contact 213 of the first relay 310 immediately, to be connected to delays time to control circuit 130, from
And time-delayed activation device 131 is motivated, so that time-delayed activation device 131 disconnects start stop switch device 113 immediately, and when by one section
Between after connect start stop switch device 113 again.When starter 111 is connected to starting control loop 110 according to enabling signal, first
First excitation coil 210 of relay 310 must be electric, then turns off the third normally-closed contact 213 of the first relay 310, to disconnect
Delays time to control circuit 130, in an ON state due to start stop switch device 113 at this time, time-delayed activation device 131 is not to start and stop
Switching device 113 is operated.
Fig. 3 B shows the schematic structure of second embodiment of the starting protection circuit 100 of Fig. 1, for showing starting
Protect more specific details in circuit 100.As shown in Figure 3B, starting protection circuit 100 includes the first interval time-delay relay 330
(C referring to fig. 2).And the first interval time-delay relay 330 further comprises third excitation coil 230 and normally closed delayed contact 231.
Compared with the embodiment of Fig. 3 A, the third excitation coil 230 of the first interval time-delay relay 330 is used as time-delayed activation device 131
Embodiment, embodiment party of the normally closed delayed contact 231 as start stop switch device 113 of the first interval time-delay relay 330
Formula.
In figure 3b, when starter 111 disconnects starting control loop 110 according to stop signal, the first relay 310
210 power loss of the first excitation coil, connect the third normally-closed contact 213 of the first relay 310 immediately, be connected to delays time to control return
Road 130 so that first interval time-delay relay 330 third excitation coil 230 it is electric, thus immediately disconnect first interval delay
The normally closed delayed contact 231 of relay 330, and connect the normally closed of the first interval time-delay relay 330 again after a period of time
Delayed contact 231.When starter 111 is connected to starting control loop 110 according to enabling signal, the of the first relay 310
One excitation coil 210 must be electric, the third normally-closed contact 213 of the first relay 310 is then turned off, with off delay control loop
130, so that 230 power loss of third excitation coil of the first interval time-delay relay 330；At this time due to the first interval time-delay relay
Electricity condition, the normally closed delayed contact of the first interval time-delay relay 330 are already to obtain before 330 third excitation coil 230
231 remain turned on.
Fig. 3 C shows the schematic structure of another embodiment of the starting protection circuit of Fig. 1, and 3 include the second relay
The interval 320 (B referring to fig. 2) and second time-delay relay 340 (D referring to fig. 2).Second relay 320 further comprises second sharp
Encourage coil 220 and the 4th normally-closed contact 221.Second interval time-delay relay 340 further comprises the 4th excitation coil 240 and often
Open delayed contact 242.The normally opened delay of the second excitation coil 220 and the second interval time-delay relay 340 of second relay 320
The 4th excitation coil 240 that contact 242 is spaced time-delay relay 340 with second after being connected in series is connected in parallel.
Compared with the embodiment of Fig. 3 A, the second excitation coil 220, second of the second relay 320 is spaced time-delay relay
4th excitation coil 240 of 340 normally opened delayed contact 242 and the second interval time-delay relay 340, collectively as time-delayed activation
The embodiment of device 131.Embodiment party of 4th normally-closed contact 221 of the second relay 320 as start stop switch device 113
Formula.
In fig. 3 c, when starter 111 disconnects starting control loop 110 according to stop signal, the first relay 310
210 power loss of the first excitation coil, connect the third normally-closed contact 213 of the first relay 310 immediately, be connected to delays time to control return
Road 130 so that second interval time-delay relay 340 the 4th excitation coil 240 it is electric, thus immediately connect second interval delay
The normally opened delayed contact 242 of relay 340, so that the second excitation coil 220 of the second relay 320 must be electric.Second relay
Second excitation coil 220 of device 320 obtains electric the 4th normally-closed contact 221 for disconnecting the second relay 320.Through after a period of time
Afterwards, the normally opened delayed contact 242 of the second interval time-delay relay 340 disconnects, so that the second excitation coil of the second relay 320
220 power loss, to connect the 4th normally-closed contact 221 of the second relay 320.
When starter 111 is connected to starting control loop 110 according to enabling signal, the first of the first relay 310 swashs
Encouraging coil 210 must be electric, and the third normally-closed contact 213 for then turning off the first relay 310 is made with off delay control loop 130
Obtain 240 power loss of the 4th excitation coil of the second interval time-delay relay 340；At this time due to the second interval time-delay relay 340
Electricity condition is already to obtain before 4th excitation coil 240, the normally opened delayed contact 242 of the second interval time-delay relay 340 is protected
Hold off-state.At this point, the second excitation coil 220 of the second relay 320 keeps power failure state, the of the second relay 320
Four normally-closed contacts 221 remain turned on.
Compared with the embodiment of Fig. 3 B, since the second relay 320 is spaced energy for time-delay relay 330 relative to first
More controllable contact is enough set, passes through the second interval the second relay 320 of control of time-delay relay 340 in the embodiment of Fig. 3 C
And then control starting 110 on-off of control loop set-up mode, can be used a delays time to control circuit 130 simultaneously to it is multiple its
His circuit or device controls.
Starting protection circuit provided by the present application makes full use of interval time-delay relay and its controllable time delay contact, so that
After compressor shutdown, the contact for being connected on starting control loop is disconnected, before the downtime of setting does not reach, even if again
Compressor can not be started by issuing enabling signal, and structure is simple, easy to operate, smaller to the change of original circuit, and is substantially improved
The security performance of compressor.
This specification uses examples to disclose the application, and one or more of examples are illustrated in attached drawing.Each
Example is provided to explanation the application and provides, rather than in order to limit the application.In fact, for those skilled in the art and
Speech is it is readily apparent that can carry out various modifications and become to the application in the case where not departing from scope of the present application or spirit
Type.For example, the diagram of a part as one embodiment or description feature can be used together with another embodiment, with
Obtain further embodiment.Therefore, it is intended that the application and covers range in the appended claims and its equivalent
The modifications and variations of interior progress.
Claims (10)
1. a kind of starting protection circuit (100), characterized by comprising:
Start control loop (110), job control circuit (120) and delays time to control circuit (130)；
The starting control loop (110) includes starter (111), start and stop exciting bank (112) and start stop switch device
(113), wherein the starter (111), the start and stop exciting bank (112) and the start stop switch device are with concatenated
Mode is connected to form series via, and the start stop switch device (113) is normally closed；
The job control circuit (120) includes working control circuit (121), wherein the start and stop exciting bank (112) is used for
It controls the working control circuit (121), the working control circuit (121) is for starting or stoping workload (105)；
The delays time to control circuit (130) includes time-delayed activation device (131), wherein the start and stop exciting bank (112) is used for
The time-delayed activation device (131) is controlled, the time-delayed activation device (131) is for controlling the start stop switch device (113).
2. starting protection circuit (100) according to claim 1, it is characterised in that:
The starter (111) connects the starting control loop (110) after receiving enabling signal to motivate the start and stop
Exciting bank (112).
3. starting protection circuit (100) according to claim 1, it is characterised in that:
The starting control loop (110), the job control circuit (120) and the delays time to control circuit (130) are with parallel connection
Mode connect to form alternate path, there are two connecting pin (101,102) for the alternate path tool, are respectively connected to control electricity
The two poles of the earth in source.
4. starting protection circuit (100) according to claim 3, it is characterised in that:
The starting protection circuit (100) includes the first relay (310), and first relay (310) includes the first excitation
Coil (210), the first normally opened contact (211) and the second normally-closed contact (212), wherein the start and stop exciting bank (112) is institute
State the first excitation coil (210) of the first relay (310)；
The working control circuit (121) includes the combined floodgate circuit (122) and opening circuit (123) being connected in parallel；
The combined floodgate circuit (122) includes the first normal of closing coil (201) and first relay (310) being connected in series
It opens contact (211), the closing coil (201) starts the workload (105) when obtaining electric；
The opening circuit (123) includes the second normal of opening coil (202) and first relay (310) being connected in series
Closed contact (212), the opening coil (202) stop the workload (105) when obtaining electric；
Wherein, first relay (310) is connected when the first excitation coil (210) of first relay (310) obtains electric
The first normally opened contact (211) so that the closing coil (201) it is electric, and disconnect first relay (310)
Second normally-closed contact (212) is so that the opening coil (202) power loss.
5. starting protection circuit (100) according to claim 3, it is characterised in that:
The starting protection circuit (100) includes the first relay (310), and first relay (310) includes the first excitation
Coil (210) and third normally-closed contact (213), wherein the start and stop exciting bank (112) is first relay (310)
The first excitation coil (210)；
The delays time to control circuit (130) further includes first relay being connected in series with the time-delayed activation device (131)
The third normally-closed contact (213) of device (310)；
Wherein, first relay (310) is connected when the first excitation coil (210) power loss of first relay (310)
Third normally-closed contact (213), the first excitation coil (210) of first relay (310) it is electric when disconnect described first
The third normally-closed contact (213) of relay (310).
6. starting protection circuit (100) according to claim 5, it is characterised in that:
The starting protection circuit (100) includes the first interval time-delay relay (330), first interval time-delay relay
It (330) include third excitation coil (230) and normally closed delayed contact (231), wherein the time-delayed activation device (131) is institute
The third excitation coil (230) of the first interval time-delay relay (330) is stated, the start stop switch device (113) is described first
It is spaced the normally closed delayed contact (231) of time-delay relay (330)；
Wherein, described first is disconnected immediately when the third excitation coil (230) at first interval time-delay relay (330) obtains electric
Be spaced the normally closed delayed contact (231) of time-delay relay (330), and connect after the predetermined time first interval delay after
The normally closed delayed contact (231) of electric appliance (330).
7. starting protection circuit (100) according to claim 5, it is characterised in that:
The starting protection circuit (100) includes the second interval time-delay relay (340) and the second relay (320), wherein institute
State the second interval time-delay relay (340) include the 4th excitation coil (240) and normally opened delayed contact (242), described second after
Electric appliance (320) includes the second excitation coil (220) and the 4th normally-closed contact (221)；
The start stop switch device (113) is the 4th normally-closed contact (221) of second relay (320)；
The time-delayed activation device (131) include it is described second interval time-delay relay (340) the 4th excitation coil (240),
Second excitation of the normally opened delayed contact (242) and second relay (320) at second interval time-delay relay (340)
Coil (220), wherein the second excitation coil (220) of second relay (320) and second interval time-delay relay
(340) the 4th excitation coil that normally opened delayed contact (242) is spaced time-delay relay (340) with described second after being connected in series
(240) it is connected in parallel；
Wherein, described second is connected immediately when the 4th excitation coil (240) at second interval time-delay relay (340) obtains electric
Be spaced time-delay relay (340) normally opened delayed contact (242) so that second relay (320) the second excitation coil
(220) must be electric, and the described second normally opened delayed contact (242) for being spaced time-delay relay (340) is disconnected after the predetermined time
So that the second excitation coil (220) power loss of second relay (320)；And
The second excitation coil (220) of second relay (320) disconnects the 4th of second relay (320) when obtaining electric
Normally-closed contact (221), when the second excitation coil (220) power loss of second relay (320), connect second relay
(320) the 4th normally-closed contact (221).
8. starting protection circuit (100) according to claim 1, it is characterised in that:
The duration that the start stop switch device (113) is in an off state is arranged to the most short of the workload (105) and stops
Machine duration.
9. starting protection circuit (100) according to claim 1 to 8, it is characterised in that:
The workload (105) is compressor.
10. a kind of starting cabinet for air-conditioner set, characterized by comprising:
Control centre (103), for issuing enabling signal；And
Starting protection circuit (100) described in any one of -7 according to claim 1, wherein the starter (111) is used for
Receive the enabling signal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821171273.2U CN208763865U (en) | 2018-07-23 | 2018-07-23 | Starting protection circuit and starting cabinet for air-conditioner set |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821171273.2U CN208763865U (en) | 2018-07-23 | 2018-07-23 | Starting protection circuit and starting cabinet for air-conditioner set |
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| CN208763865U true CN208763865U (en) | 2019-04-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109113975A (en) * | 2018-07-23 | 2019-01-01 | 江森自控空调冷冻设备(无锡)有限公司 | Starting protection circuit and starting cabinet for air-conditioner set |
-
2018
- 2018-07-23 CN CN201821171273.2U patent/CN208763865U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109113975A (en) * | 2018-07-23 | 2019-01-01 | 江森自控空调冷冻设备(无锡)有限公司 | Starting protection circuit and starting cabinet for air-conditioner set |
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