CN208158095U - Circuit sharing overload protection and air conditioning unit with same - Google Patents
Circuit sharing overload protection and air conditioning unit with same Download PDFInfo
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- CN208158095U CN208158095U CN201820821848.4U CN201820821848U CN208158095U CN 208158095 U CN208158095 U CN 208158095U CN 201820821848 U CN201820821848 U CN 201820821848U CN 208158095 U CN208158095 U CN 208158095U
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- 238000004378 air conditioning Methods 0.000 title abstract description 9
- 230000002159 abnormal effect Effects 0.000 claims abstract description 8
- 238000001514 detection method Methods 0.000 claims description 52
- 239000003990 capacitor Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 3
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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Abstract
The utility model discloses a sharing overload protection's circuit and have air conditioning unit of this circuit, wherein, sharing overload protection's circuit includes: the overload protection system comprises power equipment with an overload interface and at least one working system connected with the power equipment, wherein a controller is arranged in each working system. The power equipment is connected to an external power supply through the switch device, the overload interface changes the output signal according to whether the power equipment is abnormal or not, and the controller receives the output signal of the overload interface and controls the on-off of the switch device and the start-stop of a working system where the controller is located. The utility model discloses need not to realize the control of a plurality of operating systems with the help of auxiliary relay, line connection is simple and convenient and with low costs.
Description
Technical field
The utility model relates to the route of overload protection technical field more particularly to a kind of shared overload protection and have should
The air-conditioner set of route.
Background technique
With the continuous improvement of scientific and technological level, the use scope of air-conditioning is more and more extensive, needs to adapt to different environment
It wants, there has been the large-size air conditioning unit with multiple air-conditioning systems, each air-conditioning system passes through independent controller control
Its working condition is made, this large-size air conditioning unit generally realizes overload protection by sharing overload protection route.
Such as external fan overload, blower needs all to shut down blower and whole air-conditioning systems when overloading, and air-conditioning system
System can also protect shutdown when individually opening, and be typically all in the prior art by means of the multiple groups contact use of intermediate relay in polyphyly
It is protected on system, this control mode must use the multiple groups contact of intermediate relay, and control route is more complicated, and
Wiring point is easy that there are hidden danger.
Therefore, how to design a kind of shared overload protection route and air-conditioner set without intermediate relay is industry
Technical problem urgently to be resolved.
Utility model content
In order to solve drawbacks described above existing in the prior art, the utility model proposes a kind of routes of shared overload protection
And air-conditioner set.
The technical solution adopted in the utility model be design a kind of route of shared overload protection, including：It is connect with overload
Mouthful power-equipment, at least one work system for being connect with power-equipment, be equipped with controller in each work system.
Power-equipment is connected on external power supply by switching device, and overload interface is according to power-equipment with the presence or absence of abnormal
Change output signal, controller receives the output signal of overload interface, and work where the on-off of control switch device and controller
Make the start and stop of system.
Preferably, controller has the overload detection mouth connecting with overload interface, and controller is received according to overload detection mouth
To signal control the start and stop of work system where the controller.
Preferably, controller has the control delivery outlet connecting with switching device, and controller passes through switching control delivery outlet
Output state carry out the on-off of control switch device.
In one embodiment, which includes multiple work systems, and the overload detection mouth of all controllers is connected in parallel
It overloads on interface, the control delivery outlet of all controllers is connected in parallel on the switchgear.
Preferably, controller also has control input port, controls and is connected with overload inspection between input port and overload detection mouth
The signal that overload detection mouth receives is converted control signal input control input port, control by slowdown monitoring circuit, overload detection circuit
Device is according to the output state for controlling switch method of remote signal delivery outlet.
In one embodiment, overload detection circuit includes：First capacitor, first resistor, optocoupler and second resistance, described
One end of one capacitor is connected on the overload detection mouth, the other end is connected the first resistor ground connection, the input of the optocoupler
Proper pole is connected on overload detection mouth, input cathode is connected, and the first resistor is grounded, and the pole output end C of the optocoupler connects
It connects on the control input port, the pole output end E ground connection, one end ground connection of the second resistance, the other end are connected to optocoupler
Output end C extremely on.
Preferably, controller have detection signal output, overload interface one end be connected to detection signal output on,
The other end is connected on overload detection mouth.When power-equipment is without exception, overload interface is connected, when power-equipment has abnormal, overload
Interface disconnects.
In one embodiment, power-equipment is blower, and overload interface is normally closed passive contact.
In one embodiment, switching device is contactor.
In one embodiment, work system includes electric heater connected to the controller, humidifier and solenoid valve.
The utility model also proposed a kind of air-conditioner set with above-mentioned route.
Compared with prior art, the power-equipment in the utility model has overload interface, using overload interface in power
Equipment deposits the characteristic for changing output signal when abnormal, controller and overload interface is carried out signal connection, controller received
The output signal of interface is carried, and the start and stop of work system where the on-off of control switch device and controller.It is practical new using this
The control of multiple work systems can be realized without intermediate relay for this shared overload protection mode of type, improve empty
The reliability and safety of unit are adjusted, connection is simple and convenient and at low cost.
Detailed description of the invention
The utility model is described in detail below with reference to embodiment and attached drawing, wherein：
Fig. 1 is the circuit connection diagram that overload protection is shared in the utility model；
Fig. 2 is the circuit connection diagram of overload detection circuit in the utility model.
Specific embodiment
As shown in Figure 1, the utility model proposes route, including：Power-equipment M1 and connect with power-equipment M1 to
A few work system.
About power-equipment, power-equipment M1 included overload interface T1/T2, power-equipment M1 are built-in with test circuit, lead to
It crosses test circuit to detect the electric current etc. of power-equipment M1 to judge that it is without exception that it has, overloads interface T1/T2 according to power
Equipment M1 changes output signal with the presence or absence of abnormal, specifically, when power-equipment M1 is without exception overloads interface T1/T2 and connects
Logical, overload interface T1/T2 is disconnected when power-equipment M1 has exception, common this power-equipment such as blower, and overload interface is
Normally closed passive contact, when blower overload, normally closed passive contact is disconnected.Power-equipment M1 is connected to outside by switching device KM1
On power supply, power-equipment M1 works when switching device KM1 is connected, and power-equipment M1 stops when switching device KM1 is disconnected, common
This switching device such as contactor, the contact of contactor are connected between power-equipment and external power supply, the coil of contactor
Contact is connected when energization, and contact disconnects when the coil blackout of contactor.
About work system, controller is equipped in each work system, controller can receive the defeated of overload interface T1/T2
Signal out, according to the start and stop of work system where the on-off of Signal-controlled switch device KM1 and controller.Controller can be with
Carry out signal connection with overload interface T1/T2 by the way of wired or wireless, likewise, controller can also using wired or
Wirelessly signal connection is carried out with switching device KM1.
In preferred embodiment, controller has the overload detection mouth of the output signal for receiving overload interface T1/T2
F-OP, overload detection mouth F-OP are connected directly between on overload interface T1/T2, represent power when overload detection mouth F-OP is received
When the normal signal of equipment M1, work system where controller controls it works on, when overload detection mouth F-OP is received
When representing the signal of power-equipment M1 exception, the work of work system where controller stops it.
Controller has for exporting the control delivery outlet FAN for executing signal, the control delivery outlet to switching device KM1
FAN is connected directly between on switching device KM1, and controller is by the output state of switching control delivery outlet FAN come control switch dress
The on-off for setting KM1, when overload detection mouth F-OP receive represent power-equipment M1 normal signal when, controller switching control is defeated
The output state of outlet FAN remains up switching device KM1, and when overload detection mouth F-OP is received, to represent power-equipment M1 different
When normal signal, the output state of controller switching control delivery outlet FAN disconnects switching device KM1.Controller also has control
Input port I/O processed（It is not marked in figure）, it controls and is connected with overload detection circuit between input port I/O and overload detection mouth F-OP,
Control signal input control input port I/O is converted by the overload detection mouth F-OP signal received by overload detection circuit,
Controller is according to the output state for controlling switch method of remote signal delivery outlet FAN.
Preferably, controller has detection signal output, and one end of overload interface T1/T2 is connected to detection signal output
On mouth, the other end be connected on overload detection mouth F-OP, after controller powers on the detection signal output export detection signal,
Overload interface T1/T2 plays the role of transmitting the detection signal, and interface T1/T2 is overloaded when power-equipment M1 is normal and persistently transmits inspection
Signal is surveyed, overload interface T1/T2 can not transmit detection signal when power-equipment M1 exception.The benefit of this set is overload interface
Without external circuits, controller can be fully utilized itself port and realize system control, and route is simple and compact and high reliablity.
It is at present using a kind of wide overload detection circuit as shown in Figure 2, overload detection circuit includes：First electricity
Hold C1, first resistor R1, optocoupler U1 and second resistance R2, one end of first capacitor C1 is connected on overload detection mouth F-OP, is another
One end is connected first resistor R1 ground connection, and the input anode of optocoupler U1 is connected on overload detection mouth F-OP, input cathode string
Join first resistor R1 ground connection, the pole output end C of optocoupler U1 is connected on control input port I/O, the pole output end E is grounded, the second electricity
A termination simulation ground, the other end of resistance R2 be connected to the output end C of optocoupler U1 extremely on.
For Fig. 1 and Fig. 2, the plant-grid connection mouth of controller connects 220V external power supply, the detection signal of controller
Delivery outlet exports 12V high level.It is equipped with connection plant-grid connection mouth inside controller and controls the switching circuit between delivery outlet FAN
Or switch block, switch the on-off of switching circuit or switch block by control input port I/O received signal, connects time control
Delivery outlet FAN processed exports 220V signal.
When blower M1 is worked normally, the overload interface T1/T2 of blower M1 is in closed state, is input to overload detection mouth
The signal of F-OP is high level 12V, and work system works on, optocoupler U1 triggering and conducting, is input to the letter of control input port I/O
It number is low level, the execution signal of the control delivery outlet FAN output 220V of controller at this time, the contact of contactor KM1 keeps connecing
Logical, blower M1 is persistently worked normally.Conversely, the T1/T2 overload interface of blower M1, which is in, disconnects shape when blower M1 occurs abnormal
State, the input of overload detection mouth F-OP no signal, work system stop working, and optocoupler U1 cut-off is input to control input port I/O's
Signal is high level, and the control delivery outlet FAN of controller executes signal without output at this time, and the contact of contactor KM1 disconnects, blower
M1 stops working.
As shown in Figure 1, in the preferred embodiment, route includes multiple work systems, and work system includes and controller
Electric heater, humidifier and solenoid valve of connection etc..The overload detection mouth F-OP of all controllers is connected in overload interface in parallel
On T1/T2, the control delivery outlet FAN of all controllers is connected in parallel on one end of switching device, the detection of all controllers
Signal output is connected in parallel on the other end of switching device.When original state, any work system starts work, and overload connects
Mouth T1/T2 output represents the normal signal of power-equipment M1, and controller actuating switching device KM1 makes power-equipment M1 start work
Make；After exception occurs in power-equipment M1, overload interface T1/T2 output represents the signal of power-equipment M1 exception, and controller stops
The only work of work system, and disconnecting switching device KM1 makes power-equipment M1 stop working.
The utility model also proposed a kind of air-conditioner set with above-mentioned route.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Claims (11)
1. a kind of route of shared overload protection, including：Power-equipment with overload interface is connect with the power-equipment
At least one work system is equipped with controller in each work system；
It is characterized in that, the power-equipment is connected on external power supply by switching device, the overload interface is according to power
Equipment whether there is abnormal change output signal, and the controller receives the output signal of overload interface, and control switch device
On-off and controller where work system start and stop.
2. route as described in claim 1, which is characterized in that the controller has the overload connecting with the overload interface
Detection mouth, the start and stop of work system where the controller controls the controller according to the signal that overload detection mouth receives.
3. route as claimed in claim 2, which is characterized in that the controller has the control connecting with the switching device
Delivery outlet, the controller control the on-off of the switching device by the output state of switching control delivery outlet.
4. route as claimed in claim 3, which is characterized in that the route includes multiple work systems, the mistake of all controllers
It carries detection mouth to be connected in parallel on the overload interface, the control delivery outlet of all controllers is connected in the switching device in parallel
On.
5. route as described in claim 3 or 4, which is characterized in that the controller also has control input port, the control
Overload detection circuit is connected between input port and overload detection mouth, the overload detection circuit receives overload detection mouth
Signal is converted into control signal input control input port, and the controller is according to the output shape for controlling switch method of remote signal delivery outlet
State.
6. route as claimed in claim 5, which is characterized in that the overload detection circuit includes：First capacitor, the first electricity
Resistance, optocoupler and second resistance, one end of the first capacitor is connected on the overload detection mouth, other end series connection described first
Resistance eutral grounding, the input anode of the optocoupler is connected on overload detection mouth, input cathode is connected, and the first resistor connects
Ground, the pole output end C of the optocoupler is connected on the control input port, the pole output end E is grounded, one end of the second resistance
Ground connection, the other end be connected to the output end C of the optocoupler extremely on.
7. such as the described in any item routes of claim 2 to 4, which is characterized in that the controller has detection signal output,
One end of the overload interface is connected on the detection signal output, the other end is connected on the overload detection mouth；Institute
State power-equipment it is without exception when, the overload interface is connected, when the power-equipment has abnormal, the overload interface disconnection.
8. such as the described in any item routes of Claims 1-4, which is characterized in that the power-equipment is blower, and the overload connects
Mouth is normally closed passive contact.
9. such as the described in any item routes of Claims 1-4, which is characterized in that the switching device is contactor.
10. such as the described in any item routes of Claims 1-4, which is characterized in that the work system includes to connect with controller
Electric heater, humidifier and solenoid valve.
11. a kind of air-conditioner set with any one of claims 1 to 10 route.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820821848.4U CN208158095U (en) | 2018-05-30 | 2018-05-30 | Circuit sharing overload protection and air conditioning unit with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820821848.4U CN208158095U (en) | 2018-05-30 | 2018-05-30 | Circuit sharing overload protection and air conditioning unit with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208158095U true CN208158095U (en) | 2018-11-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820821848.4U Active CN208158095U (en) | 2018-05-30 | 2018-05-30 | Circuit sharing overload protection and air conditioning unit with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208158095U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108565828A (en) * | 2018-05-30 | 2018-09-21 | 珠海格力电器股份有限公司 | Circuit sharing overload protection and air conditioning unit with same |
-
2018
- 2018-05-30 CN CN201820821848.4U patent/CN208158095U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108565828A (en) * | 2018-05-30 | 2018-09-21 | 珠海格力电器股份有限公司 | Circuit sharing overload protection and air conditioning unit with same |
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