CN201553510U - Frequency conversion energy-saving device for elevators and ladders - Google Patents
Frequency conversion energy-saving device for elevators and ladders Download PDFInfo
- Publication number
- CN201553510U CN201553510U CN2009202201781U CN200920220178U CN201553510U CN 201553510 U CN201553510 U CN 201553510U CN 2009202201781 U CN2009202201781 U CN 2009202201781U CN 200920220178 U CN200920220178 U CN 200920220178U CN 201553510 U CN201553510 U CN 201553510U
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- braking resistor
- loop
- contactless switch
- energy
- frequency converter
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Abstract
The utility model relates to a frequency conversion energy-saving device for elevators and ladders, which comprises a frequency converter, a braking resistor and an energy feedback unit, wherein two ends of the braking resistor are respectively connected with the positive pole of the frequency converter and the input terminal of the braking resistor or the negative pole of the frequency converter, thus forming a braking resistor circuit; the braking resistor circuit is internally provided with at least one first contactor; at least three input power terminals of the energy feedback unit are connected with the corresponding input power terminals of the frequency converter; the positive pole and the negative pole of the energy feedback unit are respectively connected with the positive pole and the negative pole of a direct current bus of the frequency converter, thus forming an energy feedback circuit; the energy feedback circuit is internally provided with at least one second contactor; and the first contactor and the second contactor can be interlocked mechanically, therefore, the energy feedback circuit and the braking resistor circuit are switched automatically for application. The frequency conversion energy-saving device has simple structure, is easy to be assembled and maintained, can effectively save resources, guarantee the continuous and normal running of the elevators, also can implement the function of indicating the running state of the elevators, and can be widely applied to various equipment such as elevators, ladders and the like.
Description
Technical field
The utility model relates to a kind of elevator staircase frequency converting and energy saving device.
Background technology
People at present, in nearly all middle-high building, all can install elevator, so that can conveniently arrive each destination.The operation logic of existing elevator is roughly as follows:
When car (or staircase) at full load, if ascending for elevator, then motor is in the driving running state, and if elevator is descending, then motor is in brake running state;
When car (or staircase) was unloaded, if ascending for elevator, then motor was in brake running state, and if elevator is descending, then motor is in the driving running state.
And when above-mentioned brake running state, motor is the equal of an electrical generator, and it can be to the unnecessary electric energy of frequency converter feedback, and this moment, frequency converter must be handled the electric current of these feedbacks.
Feedback current when elevator industry is to running under braking is at present handled following dual mode:
One, shown in Fig. 1～2, on frequency converter, connect common braking resistor or braking resistor and brake unit, to consume feedback current;
Two, as shown in Figure 3, on frequency converter, connect the energy back unit, continue to use thereby the feedback current backflow is delivered to power supply grid, thereby reach energy-saving effect.
But all there is defective in above-mentioned dual mode, and wherein first kind of mode causes the waste of the energy because of the electric energy of motor feedback is directly consumed by resistance heating; The second way then can make elevator under the situation that energy feedback unit breaks down, and can't continue normal operation.
The utility model content
The purpose of this utility model is to propose a kind of elevator staircase frequency converting and energy saving device, and it is the feedback current of processing motor effectively, energy savings, and can guarantee that the lasting of elevator normally moves, thus overcome the deficiencies in the prior art.
For achieving the above object, the utility model has adopted following technical scheme:
A kind of elevator staircase frequency converting and energy saving device, comprise frequency converter, it is characterized in that, this device also comprises braking resistor and energy back unit, one end of braking resistor is connected with frequency converter is anodal, the other end is connected with the braking resistor input terminal or the negative pole of frequency converter, constitute a braking resistor loop, at least one first contactless switch is set in this braking resistor loop, at least three input supply terminal of energy back unit are connected with corresponding input supply terminal of frequency converter, it just, negative pole respectively with frequency changer direct current bus just, negative pole connects, constitute an energy back loop, at least one second contactless switch is set in this energy back loop, and above-mentioned first contactless switch and second contactless switch can be mechanical interlocked, when the energy back unit breaks down, second contactless switch disconnects, and the energy backfeed loop is opened circuit, simultaneously the first contactless switch closure, make the conducting of braking resistor loop, otherwise, when the energy back unit normally moves, the second contactless switch conducting, first contactless switch disconnects, and makes the braking resistor loop open circuit.
Described braking resistor also is provided with a brake unit in the loop, and the two ends of braking resistor are connected with brake unit respectively, and the positive and negative electrode of brake unit links with the positive and negative electrode of frequency converter respectively.
Described braking resistor also is provided with an accident indicator in the loop, and this accident indicator is in parallel with first contactless switch.
One normal operation indicating device also is set in the described energy back loop, and it is in parallel with second contactless switch that this normally moves indicating device.
One fault output relay also is set in the described energy back loop, and this fault output relay is connected with second contactless switch, and when the energy back unit broke down, the fault output relay disconnected.
Described accident indicator is the indicator lamp of band buzzer phone.
Described normal operation indicating device is an indicator lamp.
The utility model adopts energy back unit and brake unit (comprising braking resistor) is set in the elevator staircase frequency-changing control system simultaneously, and in the day-to-day operation of elevator staircase, use the energy back unit that motor feedback current is handled, and after the energy back unit breaks down, then automatically switch to brake unit, brake (electric energy that consumes the motor feedback) by traditional brake unit, the continuation that does not influence elevator staircase is used, thereby compared to prior art, effective energy savings not only, and can ensure the normal operation that continues of elevator staircase.Further say, above-mentioned automatic switching procedure is to realize that by being arranged on first, second contactless switch that in energy back loop and the braking resistor loop two can be mechanical interlocked when the energy back unit broke down, second contactless switch disconnected, the energy backfeed loop is opened circuit, the first contactless switch closure makes the conducting of braking resistor loop simultaneously, otherwise, when the energy back unit normally moves, the second contactless switch conducting, first contactless switch disconnects, and makes the braking resistor loop open circuit.In order to make the staff can observe the running state of elevator staircase frequency-changing control system easily, also at least two status indicator lamps can be set in above-mentioned energy back loop and the braking resistor loop, fault-indicating lamp wherein preferably adopts the indicator lamp of band buzzer phone, it is in parallel with first contactless switch, when the energy back unit breaks down, fault-indicating lamp is lighted, send buzzing alarming simultaneously, remind the staff that the energy back unit is overhauled, and normal run indicator wherein is in parallel with second contactless switch, when the energy back unit broke down, it extinguished automatically.
Compared with prior art, the beneficial effects of the utility model are: this elevator staircase frequency converting and energy saving device is simple in structure, be easy to assembling and safeguard, effective energy savings, and can ensure elevator continue normally move, also can implement the running state of indicating elevator staircase.The utility model can be widely used in the equipment such as various elevators, staircase.
Description of drawings
Fig. 1 is the electrical block diagram of a kind of elevator staircase frequency converting and energy saving device in the prior art;
Fig. 2 is the electrical block diagram of another kind of elevator staircase frequency converting and energy saving device in the prior art;
Fig. 3 is the electrical block diagram of another elevator staircase frequency converting and energy saving device in the prior art;
Fig. 4 is the electrical block diagram of a kind of elevator staircase frequency converting and energy saving device in the utility model specific embodiment;
Fig. 5 is the electrical block diagram of another kind of elevator staircase frequency converting and energy saving device in the utility model specific embodiment;
Fig. 6 is the automatic switch-over circuit principle of work scheme drawing of Fig. 4 and elevator staircase frequency converting and energy saving device shown in Figure 5.
The specific embodiment
Below in conjunction with the drawings and the specific embodiments content of the present utility model is described further.
As Fig. 4 and shown in Figure 6, this elevator staircase frequency-converting control device comprises a frequency converter, one braking resistor and an energy back unit MDBU, one end of braking resistor is connected with frequency converter is anodal, the other end is connected with the braking resistor input terminal PB of frequency converter, constitute a braking resistor loop, one first contactless switch SB is set in this braking resistor loop, three sub-R of input supply terminal of energy back unit, S, T respectively with the sub-R of corresponding input supply terminal of frequency converter, S, T connects, it just, negative pole respectively with frequency changer direct current bus just, negative pole connects, constitute an energy back loop, at least one second contactless switch SA is set in this energy back loop, simultaneously, one fault output relay also is set in the described energy back loop, the one end is trouble point output T/A, the other end comprises that two can be selected terminal T/B, T/C, this fault output relay is connected with second contactless switch.The above-mentioned first contactless switch SB and the second contactless switch SA can be mechanical interlocked.In addition, the red-fault indicator lamp of a band buzzer phone is set also in the above-mentioned braking resistor loop, it is in parallel with the first contactless switch SB, and the normal run indicator of a green also is set in the above-mentioned energy back loop, and it is in parallel with second contactless switch.
This elevator staircase frequency converting and energy saving device is when work, if the operation of energy back unit is normal, then trouble point output T/A, T/B connect, it is fault output relay closure, the second contactless switch SA closure, the conducting of energy back loop, green normal run indicator is bright, the first contactless switch SB disconnects simultaneously, the braking resistor loop open circuit;
And if the energy back unit is when breaking down, then cooresponding trouble point output T/A, T/B disconnect, be that the fault output relay disconnects, the second contactless switch SA disconnects, the charged adhesive of first contactless switch SB coil this moment, the conducting of braking resistor loop, the line of braking resistor inserts frequency converter, keeps the normal operation of elevator, and red simultaneously fault display lamp is lighted, the staff is reminded in buzzing, and fault has appearred in the energy back unit.
The utility model also can adopt another kind of embodiment as shown in Figure 5, its base portion is identical with embodiment shown in Figure 4, but in its braking resistor loop a brake unit is set also, the two ends of braking resistor are connected with brake unit respectively, and the positive and negative electrode of brake unit links with the positive and negative electrode of frequency changer direct current bus respectively.The operation logic of this embodiment is identical with embodiment principle shown in Figure 6 with Fig. 4.
The foregoing description only is explanation technical conceive of the present utility model and characteristics, and its purpose is to allow the personage who is familiar with this technology can understand content of the present utility model and enforcement according to this, can not limit protection domain of the present utility model with this.All equivalences of being done according to the utility model spirit change or modify, and all should be encompassed within the protection domain of the present utility model.
Claims (7)
1. elevator staircase frequency converting and energy saving device, comprise frequency converter, it is characterized in that, this device also comprises braking resistor and energy back unit, one end of braking resistor is connected with frequency converter is anodal, the other end is connected with the braking resistor input terminal or the negative pole of frequency converter, constitute a braking resistor loop, at least one first contactless switch is set in this braking resistor loop, at least three input supply terminal of energy back unit are connected with corresponding input supply terminal of frequency converter, it just, negative pole respectively with frequency changer direct current bus just, negative pole connects, constitute an energy back loop, at least one second contactless switch is set in this energy back loop, and above-mentioned first contactless switch and second contactless switch can be mechanical interlocked, when the energy back unit breaks down, second contactless switch disconnects, and the energy backfeed loop is opened circuit, simultaneously the first contactless switch closure, make the conducting of braking resistor loop, otherwise, when the energy back unit normally moves, the second contactless switch conducting, first contactless switch disconnects, and makes the braking resistor loop open circuit.
2. elevator staircase frequency converting and energy saving device according to claim 1, it is characterized in that, described braking resistor also is provided with a brake unit in the loop, and the two ends of braking resistor are connected with brake unit respectively, and the positive and negative electrode of brake unit links with the positive and negative electrode of frequency converter respectively.
3. elevator staircase frequency converting and energy saving device according to claim 1 is characterized in that, described braking resistor also is provided with an accident indicator in the loop, and this accident indicator is in parallel with first contactless switch.
4. elevator staircase frequency converting and energy saving device according to claim 1 is characterized in that, a normal operation indicating device also is set in the described energy back loop, and it is in parallel with second contactless switch that this normally moves indicating device.
5. according to claim 1 or 4 described elevator staircase frequency-converting control devices, it is characterized in that a fault output relay also is set in the described energy back loop, and this fault output relay is connected with second contactless switch, when the energy back unit broke down, the fault output relay disconnected.
6. elevator staircase frequency converting and energy saving device according to claim 3 is characterized in that, described accident indicator is the indicator lamp of band buzzer phone.
7. elevator staircase frequency converting and energy saving device according to claim 4 is characterized in that, described normal operation indicating device is an indicator lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202201781U CN201553510U (en) | 2009-10-27 | 2009-10-27 | Frequency conversion energy-saving device for elevators and ladders |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202201781U CN201553510U (en) | 2009-10-27 | 2009-10-27 | Frequency conversion energy-saving device for elevators and ladders |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201553510U true CN201553510U (en) | 2010-08-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202201781U Expired - Fee Related CN201553510U (en) | 2009-10-27 | 2009-10-27 | Frequency conversion energy-saving device for elevators and ladders |
Country Status (1)
| Country | Link |
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| CN (1) | CN201553510U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105174017A (en) * | 2015-08-31 | 2015-12-23 | 日立电梯（广州）自动扶梯有限公司 | Escalator energy recovery device |
| CN107450618A (en) * | 2017-09-12 | 2017-12-08 | 亿和精密金属制品(深圳)有限公司 | Energy saving device and related product |
-
2009
- 2009-10-27 CN CN2009202201781U patent/CN201553510U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105174017A (en) * | 2015-08-31 | 2015-12-23 | 日立电梯（广州）自动扶梯有限公司 | Escalator energy recovery device |
| CN107450618A (en) * | 2017-09-12 | 2017-12-08 | 亿和精密金属制品(深圳)有限公司 | Energy saving device and related product |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100818 Termination date: 20111027 |