CN103296663A - Air conditioner and discharging circuit and discharging control method of air conditioner bus capacitor - Google Patents
Air conditioner and discharging circuit and discharging control method of air conditioner bus capacitor Download PDFInfo
- Publication number
- CN103296663A CN103296663A CN2012100465052A CN201210046505A CN103296663A CN 103296663 A CN103296663 A CN 103296663A CN 2012100465052 A CN2012100465052 A CN 2012100465052A CN 201210046505 A CN201210046505 A CN 201210046505A CN 103296663 A CN103296663 A CN 103296663A
- Authority
- CN
- China
- Prior art keywords
- air conditioner
- bus capacitor
- electromagnetic relay
- contact
- discharge
- 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.)
- Granted
Links
Images
Landscapes
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses an air conditioner and a discharging circuit and a discharging control method of an air conditioner bus capacitor. The discharging circuit of the air conditioner bus capacitor comprises the bus capacitor, a switch unit, a discharging unit which is connected with the bus capacitor through the switch unit, and a control unit. The control unit is connected with the switch unit and used for controlling the switch unit to turn on to enable the discharging unit and the bus capacitor to form the discharging circuit when the air conditioner is in a power off condition, and controlling the switch unit to turn off when the air conditioner is in a power on condition. By means of the air conditioner and the discharging circuit and the discharging control method of the air conditioner bus capacitor, the problems that in the prior art, the bus capacitor of the air conditioner is long in discharging waiting time, and manual discharging is unsafe are solved, and the effects that the bus capacitor discharges timely, and manual cost is lowered are achieved.
Description
Technical field
The present invention relates to the air conditioner field, in particular to discharge circuit and the discharge control method of a kind of air conditioner and air conditioner bus capacitor.
Background technology
When air conditioner test, maintenance, it is the personal safety that guarantees test, maintenance personal, need before test, maintenance, the bus capacitor in the booster circuit be discharged, the charging method of prior art is: test man or maintenance man connected the discharge resistance in the controller mainboard and bus capacitor before testing or keeping in repair artificially, and bus capacitor begins discharge.This kind discharge mode of the prior art, because the bus capacitor discharge needs the regular hour, in the process of bus capacitor discharge, test man or maintenance man can only wait for.Need the artificial discharge circuit of connecting when no matter being discharge, still need wait for after discharge finishes and just can test or keep in repair, all can cause waste of manpower resource.Also have electrical safety hidden danger simultaneously, produce and after sale in inconvenient related personnel test and keep in repair.
The of a specified duration and unsafe problem in manual discharge of bus capacitor discharge stand-by period at air conditioner in the correlation technique does not propose effective solution at present as yet.
Summary of the invention
Main purpose of the present invention is to provide discharge circuit and the discharge control method of a kind of air conditioner and air conditioner bus capacitor, to solve the of a specified duration and unsafe problem in manual discharge of bus capacitor discharge stand-by period of air conditioner in the prior art.
To achieve these goals, according to an aspect of the present invention, provide a kind of discharge circuit of air conditioner bus capacitor, having comprised: bus capacitor; Switch element; Discharge cell is connected with bus capacitor via switch element; And control unit, be connected with switch element, be used for control switch element closure when air conditioner is in off-position so that discharge cell and bus capacitor constitute discharge loop, when being in power-up state, air conditioner controls switch unit.
Further, switch element comprises first switch, and wherein, first end of discharge cell is connected with first end of bus capacitor, and second end of discharge cell is connected with second end of bus capacitor via first switch.
Further, switch element also comprises second switch, and wherein, first end of discharge cell is connected with first end of bus capacitor via second switch.
Further, switch element is electromagnetic relay, and wherein, the control coil of electromagnetic relay is connected with control unit, and the moving contact of electromagnetic relay and normally-closed contact are arranged between discharge cell and the bus capacitor.
Further, electromagnetic relay is the double-contact electromagnetic relay, discharge cell is the compressor heat tape of air conditioner, wherein, the control coil of double-contact electromagnetic relay is connected with control unit, first moving contact of double-contact electromagnetic relay is connected with first end of compressor heat tape, second moving contact of double-contact electromagnetic relay is connected with second end of compressor heat tape, first normally-closed contact of double-contact electromagnetic relay is connected with first end of bus capacitor, and second normally-closed contact of double-contact electromagnetic relay is connected with second end of bus capacitor.
Further, electromagnetic relay is the double-contact electromagnetic relay, discharge cell is the compressor heat tape of air conditioner, wherein, the control coil of double-contact electromagnetic relay is connected with control unit, first moving contact of double-contact electromagnetic relay is connected with first end of compressor heat tape, second moving contact of double-contact electromagnetic relay is connected with second end of compressor heat tape, first normally-closed contact of double-contact electromagnetic relay is connected with first end of bus capacitor, second normally-closed contact of double-contact electromagnetic relay is connected with second end of bus capacitor, first normally opened contact of double-contact electromagnetic relay is connected by first end of the 3rd switch with the compressor heating power supply of air conditioner, second normally opened contact of double-contact electromagnetic relay is connected with second end of the compressor heating power supply of air conditioner, when the compressor of air conditioner needs heat supply, the 3rd switch closure, when the compressor of air conditioner does not need heat supply, the 3rd switch disconnects, wherein, the 3rd switch is the switch in the compressor heat supplying loop of air conditioner.
Further, control unit is the CPU of air conditioner.
To achieve these goals, according to a further aspect in the invention, a kind of discharge control method of air conditioner bus capacitor is provided, and the discharge circuit of any bus capacitor that this method can provide by foregoing of the present invention is carried out, and comprising: the "on" position that detects air conditioner; When air conditioner was in off-position, the switch element closure between control discharge cell and the bus capacitor was so that discharge cell and bus capacitor constitute discharge loop; And when air conditioner is in power-up state, control switch unit.
To achieve these goals, according to a further aspect in the invention, provide a kind of air conditioner, comprised the discharge circuit of any air conditioner bus capacitor that foregoing of the present invention provides.
By the present invention, adopt the discharge circuit that comprises following structure: switch element; Discharge cell is connected with bus capacitor via switch element; And control unit, be connected with switch element, be used for control switch element closure when air conditioner is in off-position so that discharge cell and bus capacitor constitute discharge loop, when being in power-up state, air conditioner controls switch unit, by the control whether discharge loop of bus capacitor is connected, in time the control discharge loop is connected when air conditioner cuts off the power supply, in case having realized the air conditioner outage just discharges to bus capacitor, and then realized bus capacitor discharge off before air-conditioner repair or test, avoided maintenance personal or tester's wait; Simultaneously, whether the connection by automatic control discharge loop, need not the people for being switched on or switched off discharge loop, realized the personal safety that reduces human cost and guarantee maintenance personal or tester.By the present invention, solved the of a specified duration and unsafe problem in manual discharge of bus capacitor discharge stand-by period of air conditioner in the prior art, and then reached the effect that bus capacitor in time discharges, reduces human cost.
Description of drawings
The accompanying drawing that constitutes the application's a part is used to provide further understanding of the present invention, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not constitute improper restriction of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram according to the discharge circuit of first embodiment of the invention;
Fig. 2 is the schematic diagram according to the discharge circuit of second embodiment of the invention;
Fig. 3 is the schematic diagram according to the discharge circuit of third embodiment of the invention; And
Fig. 4 a and Fig. 4 b are the connection layouts according to the heating circuit of the discharge circuit of third embodiment of the invention and cooler compressor.
Embodiment
Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
Fig. 1 is the schematic diagram according to the discharge circuit of first embodiment of the invention, and as shown in Figure 1, the discharge circuit of first embodiment of the invention comprises: bus capacitor, switch element, discharge cell and control unit.Particularly, switch element, bus capacitor and discharge cell series connection constitute discharge loop, and control unit is connected with switch element, with control switch element closure when air conditioner is in off-position, and then make the discharge loop conducting, the bus capacitor discharge; Control switch unit when air conditioner is in power-up state, and then discharge loop is disconnected, bus capacitor stops discharge.
Wherein, switch element can comprise first switch, and first end of discharge cell directly is connected with first end of bus capacitor, and second end of discharge cell is connected with second end of bus capacitor by first switch.
By the control whether discharge loop of bus capacitor is connected, in time the control discharge loop is connected when air conditioner cuts off the power supply, in case having realized the air conditioner outage just discharges to bus capacitor, and then realized bus capacitor discharge off before air-conditioner repair or test, avoided maintenance personal or tester's wait; Simultaneously, whether the connection by automatic control discharge loop, need not the people for being switched on or switched off discharge loop, realized the personal safety that reduces human cost and guarantee maintenance personal or tester.Solve the of a specified duration and unsafe problem in manual discharge of bus capacitor discharge stand-by period of air conditioner in the prior art, and then reached the effect that bus capacitor in time discharges, reduces human cost.
Preferably, switch element also comprises second switch, and wherein, first end of discharge cell is connected with first end of bus capacitor via second switch.
By first switch and second switch are set, avoided to disconnect the discharge loop that causes because breaking down and to disconnect when one of them switch the drawback that air conditioner can't operate as normal in switch element.The arranging of first switch and second switch guaranteed that bus capacitor can either regular picture, can satisfy air conditioner operate as normal demand again.
Fig. 2 is the schematic diagram according to the discharge circuit of second embodiment of the invention, the discharge circuit of second embodiment of the invention is compared with the discharge circuit of first embodiment of the invention, the two difference is: as shown in Figure 2, in second embodiment of the invention, switch element is electromagnetic relay, in Fig. 2, be illustrated with a double-contact electromagnetic relay (conversion hysteria relay), wherein, the control coil of electromagnetic relay is connected with control unit, and the moving contact of electromagnetic relay and normally-closed contact are arranged between discharge cell and the bus capacitor.
When air conditioner is in power-up state, control unit control electromagnetic relay adhesive (that is, the moving contact of electromagnetic relay is connected with normally opened contact), at this moment, discharge loop is in off-state; When air conditioner was in off-position, the electromagnetic relay switch restPosed (that is, the moving contact of electromagnetic relay is connected with normally-closed contact), at this moment, and discharge loop conducting, bus capacitor discharge.Double-contact electromagnetic relay among Fig. 2 also can be replaced by the moving fault electromagnetic relay.
Whether conducting by adopting electromagnetic relay control discharge loop, realized the effect of simple control loop break-make.
Fig. 3 is the schematic diagram according to the discharge circuit of third embodiment of the invention, the discharge circuit of second embodiment of the invention is compared with the discharge circuit of second embodiment of the invention, the two difference is: as shown in Figure 3, in third embodiment of the invention, discharge cell is the compressor heat tape of air conditioner, switch element is the double-contact electromagnetic relay of twin coil, the control coil of output point electromagnetic relay is connected with control unit, first moving contact of double-contact electromagnetic relay is connected with first end of compressor heat tape, second moving contact of double-contact electromagnetic relay is connected with second end of compressor heat tape, first normally-closed contact of double-contact electromagnetic relay is connected with first end of bus capacitor, and second normally-closed contact of double-contact electromagnetic relay is connected with second end of bus capacitor.
When air conditioner is in power-up state, the adhesive of control unit control electromagnetic relay (namely, the moving contact of electromagnetic relay is connected with normally opened contact, comprise: first moving contact is connected with first normally opened contact, second moving contact is connected with second normally opened contact), at this moment, discharge loop is in off-state; When air conditioner is in off-position, the electromagnetic relay switch restPoses (namely, the moving contact of electromagnetic relay is connected with normally-closed contact, comprise: first moving contact is connected with first normally-closed contact, second moving contact is connected with second normally-closed contact), at this moment, discharge loop conducting, bus capacitor discharge.
Existing compressor heat tape has reached the effect of simplifying circuit structure as the discharge cell of discharge circuit in the air-conditioner system by utilizing.
Wherein, discharge circuit in the third embodiment of the invention is when utilizing the compressor heat tape as discharge cell, not influencing the compressor heat tape is the compressor heat supply, particularly, shown in Fig. 4 a and Fig. 4 b, Fig. 4 a and Fig. 4 b are the connection layouts according to the heating circuit of the discharge circuit of third embodiment of the invention and cooler compressor, wherein, the annexation of control unit and control unit and electromagnetic relay has been shown, not shown control unit among Fig. 4 b among Fig. 4 a.When utilizing the compressor heat tape as discharge cell, first normally opened contact of double-contact electromagnetic relay (double-contact electromagnetic relay in Fig. 4 b be labeled as k1) can be connected with an end of heating power supply by the 3rd switch (the 3rd switch in Fig. 4 b be labeled as k2), second normally opened contact of double-contact electromagnetic relay is connected with the other end of heating power supply.
When air conditioner is in power-up state, the adhesive of control unit control electromagnetic relay (namely, the moving contact of electromagnetic relay is connected with normally opened contact, comprising: first moving contact is connected with first normally opened contact, and second moving contact is connected with second normally opened contact), at this moment, discharge loop is in off-state, and compressor heat tape work if desired then can be controlled the 3rd switch closure, make the heating circuit conducting, give the compressor heat supply; If do not need the work of compressor heat tape, then can control the 3rd switch and disconnect, heating circuit is disconnected, stop to the compressor heat supply.When air conditioner is in off-position, when air conditioner is in off-position, naturally do not need to be the compressor heat supply yet, the electromagnetic relay switch restPoses, and (that is, the moving contact of electromagnetic relay is connected with normally-closed contact, comprising: first moving contact is connected with first normally-closed contact, second moving contact is connected with second normally-closed contact), at this moment, discharge loop conducting, bus capacitor discharge.
Preferably, control unit is the CPU of air conditioner.
CPU by utilizing air conditioner can in time promptly be judged the "on" position of air conditioner as the control unit in the embodiment of the invention, has reached to make the bus capacitor effect of discharge in time.
In addition, the embodiment of the invention also provides the discharge control method of a kind of air conditioner and air conditioner bus capacitor, wherein, the air conditioner of the embodiment of the invention comprises any discharge circuit that the embodiment of the invention provides, the discharge circuit of any bus capacitor that the discharge control method of the air conditioner bus capacitor of the embodiment of the invention can provide by foregoing of the present invention is carried out, and specifically comprises: the "on" position that detects air conditioner; When air conditioner was in off-position, the switch element closure between control discharge cell and the bus capacitor was so that discharge cell and bus capacitor constitute discharge loop; And when air conditioner is in power-up state, control switch unit.
Detect by the "on" position to air conditioner, in time the control discharge loop is connected when air conditioner cuts off the power supply, in case having realized the air conditioner outage just discharges to bus capacitor, and then realized bus capacitor discharge off before air-conditioner repair or test, avoided maintenance personal or tester's wait; Simultaneously, whether the connection by automatic control discharge loop, need not the people for being switched on or switched off discharge loop, realized the personal safety that reduces human cost and guarantee maintenance personal or tester.Solve the of a specified duration and unsafe problem in manual discharge of bus capacitor discharge stand-by period of air conditioner in the prior art, and then reached the effect that bus capacitor in time discharges, reduces human cost.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. the discharge circuit of an air conditioner bus capacitor is characterized in that, comprising:
Bus capacitor;
Switch element;
Discharge cell is connected with bus capacitor via described switch element; And
Control unit, be connected with described switch element, it is closed so that described discharge cell and described bus capacitor constitute discharge loop to be used for controlling when air conditioner is in off-position described switch element, controls described switch element and disconnect when described air conditioner is in power-up state.
2. circuit according to claim 1, it is characterized in that, described switch element comprises first switch, wherein, first end of described discharge cell is connected with first end of described bus capacitor, and second end of described discharge cell is connected with second end of described bus capacitor via described first switch.
3. circuit according to claim 2 is characterized in that, described switch element also comprises second switch, and wherein, first end of described discharge cell is connected with first end of described bus capacitor via described second switch.
4. circuit according to claim 1 is characterized in that,
Described switch element is electromagnetic relay,
Wherein, the control coil of described electromagnetic relay is connected with described control unit, and the moving contact of described electromagnetic relay and normally-closed contact are arranged between described discharge cell and the described bus capacitor.
5. circuit according to claim 1 is characterized in that,
Described switch element is the double-contact electromagnetic relay,
Described discharge cell is the compressor heat tape of described air conditioner,
Wherein, the control coil of described double-contact electromagnetic relay is connected with described control unit, first moving contact of described double-contact electromagnetic relay is connected with first end of described compressor heat tape, second moving contact of described double-contact electromagnetic relay is connected with second end of described compressor heat tape, first normally-closed contact of described double-contact electromagnetic relay is connected with first end of described bus capacitor, and second normally-closed contact of described double-contact electromagnetic relay is connected with second end of described bus capacitor.
6. circuit according to claim 1 is characterized in that,
Described switch element is the double-contact electromagnetic relay,
Described discharge cell is the compressor heat tape of described air conditioner,
Wherein, the control coil of described double-contact electromagnetic relay is connected with described control unit, first moving contact of described double-contact electromagnetic relay is connected with first end of described compressor heat tape, second moving contact of described double-contact electromagnetic relay is connected with second end of described compressor heat tape, first normally-closed contact of described double-contact electromagnetic relay is connected with first end of described bus capacitor, second normally-closed contact of described double-contact electromagnetic relay is connected with second end of described bus capacitor, first normally opened contact of described double-contact electromagnetic relay is connected by first end of the 3rd switch with the compressor heating power supply of described air conditioner, second normally opened contact of described double-contact electromagnetic relay is connected with second end of the compressor heating power supply of described air conditioner, when the compressor of described air conditioner needs heat supply, described the 3rd switch closure, when the compressor of described air conditioner does not need heat supply, described the 3rd switch disconnects, wherein, the switch in described the 3rd switch compressor heat supplying loop that is described air conditioner.
7. circuit according to claim 1 is characterized in that, described control unit is the CPU of described air conditioner.
8. an air conditioner is characterized in that, comprises the discharge circuit of each described bus capacitor in the claim 1 to 7.
9. the discharge control method of an air conditioner bus capacitor is characterized in that, comprising:
Detect the "on" position of air conditioner;
When described air conditioner was in off-position, the switch element between control discharge cell and the bus capacitor was closed so that described discharge cell and described bus capacitor constitute discharge loop; And
When described air conditioner is in power-up state, controls described switch element and disconnect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210046505.2A CN103296663B (en) | 2012-02-27 | 2012-02-27 | The discharge circuit of air-conditioner and air-conditioner bus capacitor and discharge control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210046505.2A CN103296663B (en) | 2012-02-27 | 2012-02-27 | The discharge circuit of air-conditioner and air-conditioner bus capacitor and discharge control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103296663A true CN103296663A (en) | 2013-09-11 |
| CN103296663B CN103296663B (en) | 2016-10-05 |
Family
ID=49097157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210046505.2A Active CN103296663B (en) | 2012-02-27 | 2012-02-27 | The discharge circuit of air-conditioner and air-conditioner bus capacitor and discharge control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103296663B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104578031A (en) * | 2014-12-23 | 2015-04-29 | 珠海格力电器股份有限公司 | Control circuit and air conditioner unit |
| CN105302214A (en) * | 2015-10-22 | 2016-02-03 | 珠海格力电器股份有限公司 | Standby control circuit, standby control method and electrical apparatus |
| CN109869879A (en) * | 2019-03-06 | 2019-06-11 | 珠海格力电器股份有限公司 | Air conditioner control circuit and its discharge circuit |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1558684A (en) * | 2004-01-17 | 2004-12-29 | 深圳创维－Rgb电子有限公司 | Automatic testing discharge device |
| CN2817176Y (en) * | 2005-06-03 | 2006-09-13 | 独民行 | Mine standby cell discharge-charge device |
| CN1847736A (en) * | 2005-04-11 | 2006-10-18 | Lg电子株式会社 | Discharge device and air conditioner having said device |
| CN101446625A (en) * | 2007-11-26 | 2009-06-03 | 薛剑鸿 | Storage battery discharge comprehensive tester |
| CN202127247U (en) * | 2011-06-23 | 2012-01-25 | 嵩县电业局 | Discharge device for capacitor |
| CN202444254U (en) * | 2012-02-27 | 2012-09-19 | 珠海格力电器股份有限公司 | Air conditioner and discharge circuit of air conditioner bus capacitor |
-
2012
- 2012-02-27 CN CN201210046505.2A patent/CN103296663B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1558684A (en) * | 2004-01-17 | 2004-12-29 | 深圳创维－Rgb电子有限公司 | Automatic testing discharge device |
| CN1847736A (en) * | 2005-04-11 | 2006-10-18 | Lg电子株式会社 | Discharge device and air conditioner having said device |
| CN2817176Y (en) * | 2005-06-03 | 2006-09-13 | 独民行 | Mine standby cell discharge-charge device |
| CN101446625A (en) * | 2007-11-26 | 2009-06-03 | 薛剑鸿 | Storage battery discharge comprehensive tester |
| CN202127247U (en) * | 2011-06-23 | 2012-01-25 | 嵩县电业局 | Discharge device for capacitor |
| CN202444254U (en) * | 2012-02-27 | 2012-09-19 | 珠海格力电器股份有限公司 | Air conditioner and discharge circuit of air conditioner bus capacitor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104578031A (en) * | 2014-12-23 | 2015-04-29 | 珠海格力电器股份有限公司 | Control circuit and air conditioner unit |
| CN105302214A (en) * | 2015-10-22 | 2016-02-03 | 珠海格力电器股份有限公司 | Standby control circuit, standby control method and electrical apparatus |
| CN109869879A (en) * | 2019-03-06 | 2019-06-11 | 珠海格力电器股份有限公司 | Air conditioner control circuit and its discharge circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103296663B (en) | 2016-10-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202444254U (en) | Air conditioner and discharge circuit of air conditioner bus capacitor | |
| CN104132420B (en) | Low-power consumption standby circuit device, air conditioner and control method of air conditioner | |
| CN102591241B (en) | Control method of indoor power off-home mode intelligent control device | |
| CN201413455Y (en) | Energy-saving control device | |
| CN105915041A (en) | Charge bleed-off method, bleeder circuit and converter | |
| CN108119994A (en) | The low power consumpting controling circuit and Low-power-consumptiocontrol control method of air conditioner | |
| CN102374613B (en) | Method for controlling power-on of air conditioner through human body induction | |
| CN102710026B (en) | Remote power utilization management system | |
| CN104110800A (en) | Air conditioner, and on-off control method and on-off control system for resistive load | |
| CN202056029U (en) | Power supply combined control system of compressor and electric heating belt | |
| CN206023622U (en) | Power control circuit for uninterrupted equipment | |
| CN110360703A (en) | A kind of method for handover control of air-conditioning, device, storage medium and air-conditioning | |
| CN103151790A (en) | Intelligent power supply system of peak moving and valley filling | |
| CN103296663A (en) | Air conditioner and discharging circuit and discharging control method of air conditioner bus capacitor | |
| CN103378720A (en) | Compressor capacity charge control device and method and compressor | |
| CN105571062A (en) | Automatic cooling water control system and method for air conditioner in machine room | |
| CN102495558A (en) | System and method for remotely controlling turn-on or turn-off of electric equipment by using radio frequency communication | |
| CN202201606U (en) | Energy-saving elevator system | |
| CN208075251U (en) | The low power consumpting controling circuit of air conditioner | |
| CN103855791A (en) | Generator intelligent control system | |
| CN103135464A (en) | Electricity saving control system and method of standby electric equipment | |
| CN113629884B (en) | Energy storage system electric leakage processing device and method and energy storage system | |
| CN202734255U (en) | Electric heating function control device for heat-pump water heater | |
| CN106980279B (en) | Automatic power-on and power-off control device for elevator | |
| CN206452182U (en) | On-delay control device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |