CN205863893U - For the net-fault stoppage protection circuit of fan and the fan with it - Google Patents
For the net-fault stoppage protection circuit of fan and the fan with it Download PDFInfo
- Publication number
- CN205863893U CN205863893U CN201620682860.2U CN201620682860U CN205863893U CN 205863893 U CN205863893 U CN 205863893U CN 201620682860 U CN201620682860 U CN 201620682860U CN 205863893 U CN205863893 U CN 205863893U
- Authority
- CN
- China
- Prior art keywords
- fan
- circuit
- power supply
- alternating current
- switch element
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model discloses a kind of net-fault stoppage protection circuit for fan and there is its fan; wherein, fan includes guard and motor, and protection circuit includes: commutation circuit; the input of commutation circuit is connected with alternating current power supply, and the outfan of commutation circuit is connected with motor；Touch signal generation circuit, touches stopping signal in order to generate when guard is touched；Zero cross detection circuit, zero cross detection circuit be connected with alternating current power supply with detect alternating current power supply voltage zero-crossing signal；Master controller; master controller is connected with commutation circuit, touch signal generation circuit and zero cross detection circuit respectively; commutation circuit is controlled according to the voltage zero-crossing signal of alternating current power supply by master controller when receiving touch stopping signal; with by commutation circuit output unidirectional current to motor so that motor stalling.This circuit is in fan electromotor running, when human or animal touches the guard of fan, it is possible to control motor stopping in time, it is to avoid damage human or animal.
Description
Technical field
This utility model relates to household electrical appliance technical field, particularly to a kind of net-fault stoppage protection circuit for fan
With there is its fan.
Background technology
The net-fault stoppage protection of fan at present, is mainly realized by relay double-throw contact, i.e. touches wind as user
During the guard fanned, by relay, the power supply of fan electromotor is switched to unidirectional current by alternating current, so that motor realizes fast
Speed braking, it is to avoid human body is damaged.
Utility model content
One of technical problem that this utility model is intended to solve in correlation technique the most to a certain extent.To this end, this reality
It is to propose a kind of net-fault stoppage protection circuit for fan by a novel purpose, when receiving touch stopping signal
Commutation circuit is controlled by the voltage zero-crossing signal according to alternating current power supply, with by commutation circuit output unidirectional current to motor,
Motor is made to realize quick shutdown, it is to avoid human or animal is damaged.
Another purpose of the present utility model is to propose a kind of fan.
For achieving the above object, on the one hand this utility model proposes a kind of net-fault stoppage protection circuit for fan,
Described fan includes that guard and motor, described net-fault stoppage protection circuit include: commutation circuit, the input of described commutation circuit
Being connected with alternating current power supply, the outfan of described commutation circuit is connected with described motor；Touch signal generation circuit, described touch is believed
Number occur circuit in order to when described guard is touched generate touch stopping signal；Zero cross detection circuit, described zero passage detection electricity
Road be connected with described alternating current power supply with detect described alternating current power supply voltage zero-crossing signal；And master controller, described main control
Device is connected with described commutation circuit, described touch signal generation circuit and described zero cross detection circuit respectively, described master controller
When receiving described touch stopping signal, described commutation circuit is controlled by the voltage zero-crossing signal according to described alternating current power supply
System, to export unidirectional current extremely described motor by described commutation circuit, so that described motor stalling.
According to the net-fault stoppage protection circuit for fan of the present utility model, the input of commutation circuit and alternating current power supply
Being connected, the outfan of commutation circuit is connected with motor, and touch signal generation circuit stops in order to generate touch when guard is touched
Machine signal, master controller is when receiving touch stopping signal, according to the voltage mistake of the alternating current power supply of zero cross detection circuit detection
Commutation circuit is controlled by zero-signal, with by commutation circuit output unidirectional current to motor, make motor realize quick shutdown, keep away
Exempt from human or animal is damaged, improve the safety of fan.
Specifically, described master controller is defeated by controlling described commutation circuit when not receiving described touch stopping signal
Go out alternating current extremely described motor, so that described motor runs well.
Specifically, described commutation circuit includes: first to fourth switch element, and one end of the first switch element and second is opened
Close after one end of unit is connected and be connected with one end of described alternating current power supply, one end of the 3rd switch element and the 4th switch element
One end is connected with the other end of described alternating current power supply after being connected, and the other end and described 3rd switch of described first switch element are single
The other end of unit is connected with one end of described motor after being connected, and the other end and described 4th switch of described second switch unit are single
Unit the other end be connected after be connected with the other end of described motor, the control end of described first to fourth switch element respectively with institute
State master controller to be connected.
Further, described first switch element is identical with the circuit structure of described second switch unit, and described first opens
Pass unit includes: the first switching tube, and the first end of described first switching tube is connected with one end of described alternating current power supply, described first
Second end of switching tube is connected with one end of described motor；First photoelectrical coupler, the first end of described first photoelectrical coupler
It is connected by the first end of the first resistance with described first switching tube, the second end of described first photoelectrical coupler and described first
The control end of switching tube is connected, and the 3rd end and first of described first photoelectrical coupler is preset power supply and is connected, described first photoelectricity
4th end of bonder is connected with described master controller by the second resistance.
Further, described 3rd switch element is identical with the circuit structure of described 4th switch element, and the described 3rd opens
Pass unit includes: second switch pipe, and the first end of described second switch pipe is connected with the other end of described alternating current power supply, described
Second end of two switching tubes is connected with the other end of described motor, and the control end of described second switch pipe passes through the 3rd resistance and institute
State master controller to be connected.
Further, described first switching tube and second switch pipe are controllable silicon.
Specifically, described zero cross detection circuit includes: diode, the positive pole of described diode and the one of described alternating current power supply
End is connected；Audion, the base stage of described audion is connected with the negative pole of described diode by the 4th resistance, described audion
Colelctor electrode preset power supply by the 5th resistance and first and be connected, and be connected with described master controller by the 6th resistance, described
The grounded emitter of audion；7th resistance, described 7th resistance is connected between base stage and the emitter stage of described audion.
Specifically, described master controller is opened according to the voltage zero-crossing signal control described first to fourth of described alternating current power supply
Close the switching sequence of unit so that the alternating current that described alternating current power supply exports is converted to described unidirectional current by described commutation circuit.
Additionally, this utility model also proposed a kind of fan, it includes the above-mentioned net-fault stoppage protection electricity for fan
Road.
Fan of the present utility model, by the above-mentioned net-fault stoppage protection circuit for fan, stops receiving touch
During machine signal, it is possible to according to the voltage zero-crossing signal of alternating current power supply, commutation circuit is controlled, to be exported by commutation circuit
Unidirectional current, to motor, makes motor realize quick shutdown, it is to avoid to damage human or animal, improves the safety of fan.
Accompanying drawing explanation
Fig. 1 is the block diagram of the net-fault stoppage protection circuit for fan according to this utility model embodiment.
Fig. 2 is the structural representation of the net-fault stoppage protection circuit for fan according to one embodiment of this utility model
Figure.
Fig. 3 is the switching sequence of first to fourth switch element in the commutation circuit according to one embodiment of this utility model
Figure.
Fig. 4 is the net-fault stoppage protection circuit diagram for fan according to one embodiment of this utility model.
Detailed description of the invention
Of the present utility model embodiment is described below in detail, and the example of described embodiment is shown in the drawings, the most ad initio
Represent same or similar element to same or similar label eventually or there is the element of same or like function.Below by ginseng
It is exemplary for examining the embodiment that accompanying drawing describes, it is intended to be used for explaining this utility model, and it is not intended that to this utility model
Restriction.
Below with reference to the accompanying drawings the net-fault stoppage protection electricity for fan proposed according to this utility model embodiment is described
Road and the fan with it.
Fig. 1 is the block diagram of the net-fault stoppage protection circuit for fan according to this utility model embodiment, its
In, fan includes guard and motor.
As it is shown in figure 1, this net-fault stoppage protection circuit being used for fan includes commutation circuit 10, touch signal generation circuit
20, zero cross detection circuit 30 and master controller 40.
Wherein, the input of commutation circuit 10 is connected with alternating current power supply (AB), the outfan of commutation circuit 10 and motor M phase
Even.Touch signal generation circuit 20 touches stopping signal in order to generate when guard is touched.Zero cross detection circuit 30 with exchange
Power supply is connected to detect the voltage zero-crossing signal of alternating current power supply.Master controller 40 occurs with commutation circuit 10, touch signal respectively
Circuit 20 is connected with zero cross detection circuit 30, master controller 40 receive touch stopping signal time according to the voltage of alternating current power supply
Commutation circuit 10 is controlled by zero cross signal, to export unidirectional current to motor M by commutation circuit 10, so that motor M stall.
In embodiment of the present utility model, master controller 40 do not receive touch stopping signal time by control commutation
Circuit 10 output AC electricity is to motor M, so that motor M runs well.
Specifically, fan is when normally working, and master controller 40 is by controlling commutation circuit 10 output AC electricity to electricity
Machine M, so that motor M runs well.And in fan course of normal operation, if net-fault condition occurs, such as, have people or move
When thing touches the guard of fan, corresponding touch signal generation circuit 20 can generate touch stopping signal, and sends to master control
Device 40 processed, master controller 40 receive touch stopping signal after, by with any one input line in alternating current power supply input line
The zero cross detection circuit 30 being connected detects the voltage zero-crossing signal of alternating current power supply, and according to the voltage zero-crossing signal control of alternating current power supply
Commutation circuit 10 processed exports unidirectional current to motor M, so that motor M realizes fast braking, effectively prevents human or animal from being injured.
According to an embodiment of the present utility model, as in figure 2 it is shown, commutation circuit 10 includes: first to fourth switch is single
One end of unit, one end of the first switch element K1 and second switch unit K2 is connected with one end of alternating current power supply after being connected, and the 3rd
One end of switch element K3 is connected with the other end of alternating current power supply after being connected with one end of the 4th switch element K4, and the first switch is single
The other end of unit K1 and the other end of the 3rd switch element K3 are connected with one end of motor M after being connected, second switch unit K2's
The other end of the other end and the 4th switch element K4 is connected with the other end of motor M after being connected, first to fourth switch element
Control end to be connected with master controller 40 respectively.
Master controller 40 controls the switching sequence of first to fourth switch element according to the voltage zero-crossing signal of alternating current power supply
So that the alternating current that alternating current power supply exports is converted to unidirectional current by commutation circuit 10.
Specifically, as in figure 2 it is shown, when fan normally works, master controller 40 controls first in commutation circuit 10
Switch element K1 and the 4th switch element K4 is both turned on, and controls second switch unit K2 and the 3rd switch element K3 and all disconnect,
Now alternating current power supply is directly inputted into motor M, motor M normal operation.And when net-fault condition occurs, touch signal generation circuit
20 generate touch stopping signal and send to master controller 40, and master controller 40, after receiving touch stopping signal, first controls
First switch element K1 and the 4th switch element K4 all disconnects, and then waits the voltage zero-crossing signal of alternating current power supply.Such as Fig. 3 institute
Showing, when voltage zero-crossing signal VDD alternating current power supply being detected is turned to 1 by 0, master controller 40 controls second switch unit K2
It is both turned on the 3rd switch element K3, and the first switch element K1 and the 4th switch element K4 is off, when detecting
When the voltage zero-crossing signal VDD of alternating current power supply is turned to 0 by 1, master controller 40 controls second switch unit K2 and the 3rd switch
Unit K3 all disconnects, and controls the first switch element K1 and the 4th switch element K4 conducting, circulates successively, until motor M stops
Operating, controls first to fourth switch element and all disconnects, it is achieved the fast braking of motor, prevent human or animal from coming to harm.
It is understood that in embodiment of the present utility model, when fan normally works, master controller 40 can also
Control second switch unit K2 and the 3rd switch element K3 to be both turned on, so that alternating current power supply input is normally transported to motor M, motor M
Turn, and when receiving touch stopping signal, control the switching sequence of first to fourth switch element according to voltage zero-crossing signal
So that the alternating current that alternating current power supply exports is converted to unidirectional current by commutation circuit 10, I will not elaborate for concrete control process.
In embodiment of the present utility model, the first switch element K1 to the 4th switch element K4 can be controllable silicon, MOS
Pipe, high-voltage three-pole pipe or photoelectrical coupler etc..
Specifically, according to an embodiment of the present utility model, as shown in Figure 4, the first switch element K1 and second switch
The circuit structure of unit K2 is identical.First switch element K1 includes first switch transistor T the 1, first photoelectrical coupler U1, the first resistance
R1 and the second resistance R2, wherein, the first end of the first switch transistor T 1 is connected with one end A of alternating current power supply, the first switch transistor T 1
Second end is connected with one end of motor M, and first end of the first photoelectrical coupler U1 passes through the first resistance R1 and the first switch transistor T 1
The first end be connected, second end of the first photoelectrical coupler U1 and the control end of the first switch transistor T 1 are connected, the first photoelectric coupling
3rd end of device U1 and first is preset power supply VCC1 (voltage can be+5V) and is connected, and the 4th end of the first photoelectrical coupler U1 passes through
Second resistance R2 is connected with master controller 40, and the first switch transistor T 1 can be controllable silicon.
As shown in Figure 4, the circuit structure of the 3rd switch element K3 and the 4th switch element K4 is identical, the 3rd switch element K3
Including second switch pipe T2 and the 3rd resistance R3, wherein, the other end B phase of first end of second switch pipe T2 and alternating current power supply
Even, second end of second switch pipe T2 is connected with the other end of motor M, and the control end of second switch pipe T2 passes through the 3rd resistance R3
Being connected with master controller 40, second switch pipe T2 can be controllable silicon.
According to an embodiment of the present utility model, as shown in Figure 4, zero cross detection circuit may include that diode D1, three
Pole pipe Q1, the 4th resistance R4, the 5th resistance R5, the 6th resistance R6 and the 7th resistance R7, wherein, the positive pole of diode D1 with exchange
One end of power supply A is connected, and the base stage of audion Q1 is connected by the negative pole of the 4th resistance R4 and diode D1, audion Q1's
Colelctor electrode is preset power supply VCC1 by the 5th resistance R5 and first and is connected, and is connected with master controller 40 by the 6th resistance R6,
The grounded emitter GND of audion Q1, the 7th resistance R7 are connected between base stage and the emitter stage of audion Q1.Specific works is former
I will not elaborate for reason.
According to the net-fault stoppage protection circuit for fan of this utility model embodiment, the input of commutation circuit and friendship
Stream power supply is connected, and the outfan of commutation circuit is connected with motor, and touch signal generation circuit is in order to generate when guard is touched
Touching stopping signal, master controller is when receiving touch stopping signal, according to the alternating current power supply of zero cross detection circuit detection
Commutation circuit is controlled by voltage zero-crossing signal, with by commutation circuit output unidirectional current to motor, make motor realize quickly
Shut down, it is to avoid human or animal is damaged, improves the safety of fan.
Additionally, embodiment of the present utility model also proposed a kind of fan, it includes that the above-mentioned net-fault for fan is stopped
Machine protection circuit.
The fan of this utility model embodiment, by the above-mentioned net-fault stoppage protection circuit for fan, is receiving
When touching stopping signal, it is possible to according to the voltage zero-crossing signal of alternating current power supply, commutation circuit is controlled, with by commutation electricity
Road output unidirectional current, to motor, makes motor realize quick shutdown, it is to avoid to damage human or animal, improves the safety of fan
Property.
In description of the present utility model, term " first ", " second " are only used for describing purpose, and it is not intended that indicate
Or imply relative importance or the implicit quantity indicating indicated technical characteristic.Thus, " first ", " second " are defined
Feature can express or implicitly include at least one this feature.
In this utility model, unless otherwise clearly defined and limited, term " install ", " being connected ", " connection ", " Gu
Fixed " etc. term should be interpreted broadly, connect for example, it may be fixing, it is also possible to be to removably connect, or integral；Can be
It is mechanically connected, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, can be two
The connection of element internal or the interaction relationship of two elements, unless otherwise clear and definite restriction.Common skill for this area
For art personnel, above-mentioned term concrete meaning in this utility model can be understood as the case may be.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show
Example " or the description of " some examples " etc. means to combine this embodiment or example describes specific features, structure, material or spy
Point is contained at least one embodiment of the present utility model or example.In this manual, the schematic table to above-mentioned term
State and be necessarily directed to identical embodiment or example.And, the specific features of description, structure, material or feature are permissible
One or more embodiment in office or example combine in an appropriate manner.Additionally, in the case of the most conflicting, this area
Technical staff the feature of the different embodiments described in this specification or example and different embodiment or example can be entered
Row combines and combination.
Although above it has been shown and described that embodiment of the present utility model, it is to be understood that above-described embodiment is
Exemplary, it is impossible to it is interpreted as that those of ordinary skill in the art is in scope of the present utility model to restriction of the present utility model
In above-described embodiment can be changed, revise, replace and modification.
Claims (9)
1. the net-fault stoppage protection circuit for fan, it is characterised in that described fan includes guard and motor, described tactile
Net stoppage protection circuit includes:
Commutation circuit, the input of described commutation circuit is connected with alternating current power supply, the outfan of described commutation circuit and described electricity
Machine is connected；
Touch signal generation circuit, described touch signal generation circuit shuts down letter in order to generate when described guard is touched to touch
Number；
Zero cross detection circuit, described zero cross detection circuit be connected with described alternating current power supply with detect described alternating current power supply voltage mistake
Zero-signal；And
Master controller, described master controller is examined with described commutation circuit, described touch signal generation circuit and described zero passage respectively
Slowdown monitoring circuit be connected, described master controller when receiving described touch stopping signal according to described alternating current power supply voltage zero-cross letter
Number described commutation circuit is controlled, with by described commutation circuit output unidirectional current to described motor so that described motor
Stall.
2. the net-fault stoppage protection circuit for fan as claimed in claim 1, it is characterised in that described master controller is not
By controlling described commutation circuit output AC electricity extremely described motor when receiving described touch stopping signal, so that described motor
Run well.
3. the net-fault stoppage protection circuit for fan as claimed in claim 1 or 2, it is characterised in that described commutation circuit
Including:
First to fourth switch element, one end of the first switch element and one end of second switch unit exchange with described after being connected
One end of power supply is connected, and one end of the 3rd switch element is connected with one end of the 4th switch element afterwards another with described alternating current power supply
One end is connected, and the other end of described first switch element is connected rear and described motor with the other end of described 3rd switch element
One end is connected, and the other end of described second switch unit is connected rear and described motor with the other end of described 4th switch element
The other end is connected, and the control end of described first to fourth switch element is connected with described master controller respectively.
4. the net-fault stoppage protection circuit for fan as claimed in claim 3, it is characterised in that described first switch element
Identical with the circuit structure of described second switch unit, described first switch element includes:
First switching tube, the first end of described first switching tube is connected with one end of described alternating current power supply, described first switching tube
The second end be connected with one end of described motor；
First photoelectrical coupler, the first end of described first photoelectrical coupler by the first resistance and described first switching tube the
One end is connected, and the second end of described first photoelectrical coupler is connected with the control end of described first switching tube, described first photoelectricity
3rd end of bonder and first is preset power supply and is connected, and the 4th end of described first photoelectrical coupler passes through the second resistance with described
Master controller is connected.
5. the net-fault stoppage protection circuit for fan as claimed in claim 4, it is characterised in that described 3rd switch element
Identical with the circuit structure of described 4th switch element, described 3rd switch element includes:
Second switch pipe, the first end of described second switch pipe is connected with the other end of described alternating current power supply, described second switch
Second end of pipe is connected with the other end of described motor, and the control end of described second switch pipe is by the 3rd resistance and described master control
Device processed is connected.
6. the net-fault stoppage protection circuit for fan as claimed in claim 5, it is characterised in that described first switching tube and
Second switch pipe is controllable silicon.
7. the net-fault stoppage protection circuit for fan as claimed in claim 1, it is characterised in that described zero cross detection circuit
Including:
Diode, the positive pole of described diode is connected with one end of described alternating current power supply；
Audion, the base stage of described audion is connected with the negative pole of described diode by the 4th resistance, described audion
Colelctor electrode is preset power supply by the 5th resistance and first and is connected, and is connected with described master controller by the 6th resistance, and described three
The grounded emitter of pole pipe；
7th resistance, described 7th resistance is connected between base stage and the emitter stage of described audion.
8. the net-fault stoppage protection circuit for fan as claimed in claim 3, it is characterised in that described master controller according to
The voltage zero-crossing signal of described alternating current power supply controls the switching sequence of described first to fourth switch element so that described commutation is electric
The alternating current that described alternating current power supply exports is converted to described unidirectional current by road.
9. a fan, it is characterised in that include that the net-fault for fan as according to any one of claim 1-8 is shut down and protect
Protection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620682860.2U CN205863893U (en) | 2016-06-29 | 2016-06-29 | For the net-fault stoppage protection circuit of fan and the fan with it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620682860.2U CN205863893U (en) | 2016-06-29 | 2016-06-29 | For the net-fault stoppage protection circuit of fan and the fan with it |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205863893U true CN205863893U (en) | 2017-01-04 |
Family
ID=57644969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620682860.2U Expired - Fee Related CN205863893U (en) | 2016-06-29 | 2016-06-29 | For the net-fault stoppage protection circuit of fan and the fan with it |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205863893U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105914708A (en) * | 2016-06-29 | 2016-08-31 | 广东美的环境电器制造有限公司 | Net-touching shutdown protection circuit used for fan and fan equipped with same |
-
2016
- 2016-06-29 CN CN201620682860.2U patent/CN205863893U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105914708A (en) * | 2016-06-29 | 2016-08-31 | 广东美的环境电器制造有限公司 | Net-touching shutdown protection circuit used for fan and fan equipped with same |
| CN105914708B (en) * | 2016-06-29 | 2019-08-27 | 广东美的环境电器制造有限公司 | For the net-fault stoppage protection circuit of fan and with its fan |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103595037B (en) | Three-phase alternating current phase sequence error correction device | |
| CN103675424B (en) | Zero passage and standby zero-power-consumption key press detecting circuit, washing machine | |
| CN105282914B (en) | Switchgear and load control system including the switchgear | |
| CN107769159A (en) | A kind of earth leakage protective device, electrical leakage detecting method and a kind of charging equipment | |
| CN104538949B (en) | Remote feeding power system and the partition method of cable short trouble | |
| CN104539049B (en) | Remote feeding power system and the localization method of cable short trouble | |
| CN104201939A (en) | Control system of AC (alternate current) motor | |
| CN205863893U (en) | For the net-fault stoppage protection circuit of fan and the fan with it | |
| CN106383312A (en) | Motor state detection circuit and motor state display device | |
| CN107425811A (en) | The monitoring device and photovoltaic generating system of photovoltaic resistor | |
| CN109842102A (en) | A kind of overload short circuit protection circuit and device | |
| CN103606901A (en) | Electrostatic protection device, intelligent power module and frequency conversion household appliance | |
| CN205811517U (en) | Dc motor protector | |
| CN205847076U (en) | AC D/C power | |
| CN105914708B (en) | For the net-fault stoppage protection circuit of fan and with its fan | |
| CN105977913A (en) | Fan as well as screen touch shutdown protection method and protection circuit for fan | |
| CN207459702U (en) | A kind of earth leakage protective device and a kind of charging equipment | |
| CN104253417B (en) | Zero cross signal produces and synchronous communication circuit, method and home appliance | |
| CN102594226B (en) | A kind of non-contact reversing contactor | |
| CN205540123U (en) | Zero power consumption standby circuit and washing machine | |
| CN205430102U (en) | Adopt brushless DC motor controlling means of singlechip | |
| CN209707939U (en) | Circuit is protected in the enabling of electrical equipment | |
| KR101657228B1 (en) | Apparatus for controlling stand-by power of air conditioner | |
| CN207648948U (en) | A kind of air cleaning system based on air-treatment unit | |
| CN208094168U (en) | A kind of motor control fail-safe circuit and device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170104 Effective date of abandoning: 20190827 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20170104 Effective date of abandoning: 20190827 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170104 Termination date: 20200629 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |