CN203445816U - Two compressor soft start apparatus - Google Patents
Two compressor soft start apparatus Download PDFInfo
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- CN203445816U CN203445816U CN201320496167.2U CN201320496167U CN203445816U CN 203445816 U CN203445816 U CN 203445816U CN 201320496167 U CN201320496167 U CN 201320496167U CN 203445816 U CN203445816 U CN 203445816U
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- soft
- branch road
- compressor
- control assembly
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Abstract
The utility model discloses a two compressor soft start apparatus. The soft start apparatus comprises two compressors. The two compressors are connected in parallel onto a same soft starter. An interlocking circuit is arranged between the two compressors. Therefore, the effect that the single soft starter drives the two compressors to start successively is realized. When the apparatus is employed for conducting soft start, current is very low and no impact can be generated on an electrical part or a power grid. In addition, another soft starter is saved so that the cost is reduced. Moreover, the timing sequence problem of switching of the compressors and a bypass when the single soft starter is used to control the two compressors to start is solved, and the problem that the compressors cannot be started again due to faults of the soft starter because of improper timing sequence processing is also solved. Besides, when the soft start is conducted, the current is very low and no impact is generated on the electrical part or the power grid.
Description
Technical field
The utility model relates to Double-head water-cooling screw rod formula field of central air-conditioning, relates in particular to a kind of two compressor soft starting devices.
Background technology
The Starting mode of current existing water-cooling screw rod formula central air-conditioning compressor, is used star triangle start mostly, also has in addition soft start, variable frequency starting etc.
But while adopting star triangle start mode, can produce doubly 4 times of electric currents even of 2-3, electrical network and electric device are impacted, can damage device itself or reduce device useful life.
And the frequency converter price general charged that variable frequency starting mode is used is higher, the market competitiveness is low.
In addition, soft starting mode generally adopts two soft initiators to start respectively compressor separately, and the electronic-control box size causing increases, and weight increases, and heating increases, and the waste of devices use rate low-resource.
For above description, need badly and want a kind of two new compressor soft starting devices.
Summary of the invention
The purpose of this utility model is to provide a kind of two compressor soft starting devices, and this device has been saved a soft initiator, has reduced cost.
Also solved the sequence problem of compressor and bypass changeover while using a soft initiator to control two compressors to open, and sequential processing is improper, soft initiator report fault, cannot start the problem of compressor again.
And electric current is very low while carrying out soft start, can not impact electricity piece and electrical network.
For reaching this object, the utility model by the following technical solutions:
A compressor soft starting device, comprises two compressors, and described two compressors are connected in parallel on same soft initiator, between two compressors, are provided with interlock circuit, thereby realize a soft initiator, drives two compressors successively to start.
As preferably, described two compressor soft starting devices comprise: the first compressor and the second compressor,
Described the first compressor is connected with one end of the first work branch with the first soft start branch road being in parallel, and the other end that described the first soft start branch road is in parallel with the first work branch is connected with power supply;
On described the first soft start branch road, be in series with a first soft start branch road break-make control assembly and a soft initiator;
On described soft initiator, be provided with starter and open accessory;
In described the first work branch, be in series with a first work branch break-make control assembly;
Described the second compressor is connected with one end of the second work branch with the second soft start branch road being in parallel, and the other end that described the second soft start branch road is in parallel with the second work branch is connected with power supply;
On described the second soft start branch road, be in series with a second soft start branch road break-make control assembly, and described soft initiator is also connected on the second soft start branch road;
In described the second work branch, be in series with a second work branch break-make control assembly;
Described the first soft start branch road break-make control assembly, the first work branch break-make control assembly, the second soft start branch road break-make control assembly and the second work branch break-make control assembly are all connected with controller.
As preferably,
Described the first soft start branch road break-make control assembly and the second soft start branch road break-make control assembly are contactor;
Described starter is opened on accessory and is provided with two contactor auxiliary contact in parallel, described two contactor auxiliary contact are used for triggering soft initiator and open, one of them is corresponding with the first soft start branch road break-make control assembly, and another is corresponding with the second soft start branch road break-make control assembly.
As preferably, on described soft initiator, be also provided with signal feedback module, described signal feedback module is connected with described controller, for startup settling signal is fed back to described controller.
As preferably, described the first work branch break-make control assembly and the second work branch break-make control assembly are contactor.
As preferably, the contactor auxiliary contact sequential that described the first soft start branch road break-make control assembly or the second soft start branch road break-make control assembly are corresponding with it is identical.
The beneficial effects of the utility model are: the utility model provides a kind of two compressor soft starting devices, because described soft starting device is connected in parallel in two compressors on same soft initiator, between two compressors, be provided with interlock circuit, thereby realizing a soft initiator drives two compressors successively to start, so adopt this device can save a soft initiator, reduced cost.Again because two compressors are respectively the first compressor and the second compressor, described the first compressor is connected with one end of the first work branch with the first soft start branch road being in parallel, and the other end that described the first soft start branch road is in parallel with the first work branch is connected with power supply; On described the first soft start branch road, be in series with a first soft start branch road break-make control assembly and a soft initiator; On described soft initiator, be provided with starter and open accessory; In described the first work branch, be in series with a first work branch break-make control assembly; Described the second compressor is connected with one end of the second work branch with the second soft start branch road being in parallel, and the other end that described the second soft start branch road is in parallel with the second work branch is connected with power supply; On described the second soft start branch road, be in series with a second soft start branch road break-make control assembly, and described soft initiator is also connected on the second soft start branch road; In described the second work branch, be in series with a second work branch break-make control assembly; Described the first soft start branch road break-make control assembly, the first work branch break-make control assembly, the second soft start branch road break-make control assembly and the second work branch break-make control assembly are all connected with controller.So electric current is very low while adopting this device to carry out soft start, can not impact electricity piece and electrical network; Also solved the sequence problem of compressor and bypass changeover, and sequential processing is improper, soft initiator report fault, cannot start the problem of compressor again.
Accompanying drawing explanation
Fig. 1 is the two compressor soft-start method flow charts that the utility model specific embodiment provides;
Fig. 2 is the flow chart of a kind of preferred process scheme of the two compressor soft-start methods that provide of the utility model specific embodiment;
Fig. 3 is the structural representation of the two compressor soft starting devices that provide of the utility model embodiment.
Wherein:
1: soft initiator; 2: controller; 3: the first contactors; 4: the first compressors; 5: the three contactors; 6: the second compressors; 7: the four contactors; 8: the second contactors;
11: starter is opened accessory; 12: signal feedback module;
111: the first contactor auxiliary contact; 112: the three contactor auxiliary contact.
Embodiment
Below in conjunction with accompanying drawing and by embodiment, further illustrate the technical solution of the utility model.
Device embodiment:
Two compressor soft starting devices described in this programme, comprise two compressors, described two compressors are connected in parallel on same soft initiator, between two compressors, are provided with interlock circuit, thereby realize a soft initiator, drive two compressors successively to start.
Fig. 3 is the structural representation of the two compressor soft starting devices that provide of the utility model embodiment.As shown in Figure 3, this two compressors soft starting device comprises: the first compressor 4, the second compressor 6, soft initiator 1, power supply, a controller 2.
Described the first compressor 4 is connected with one end of the first work branch with the first soft start branch road being in parallel, and the other end that described the first soft start branch road is in parallel with the first work branch is connected with power supply.On described the first soft start branch road, be in series with a first soft start branch road break-make control assembly and a soft initiator 1, on described soft initiator 1, be provided with starter and open accessory.In described the first work branch, be in series with a first work branch break-make control assembly.
Described the second compressor 6 is connected with one end of the second work branch with the second soft start branch road being in parallel, and the other end that described the second soft start branch road is in parallel with the second work branch is connected with power supply.On described the second soft start branch road, be in series with a second soft start branch road break-make control assembly, and described soft initiator 1 is also connected on the second soft start branch road.In described the second work branch, be in series with a second work branch break-make control assembly.
Described the first soft start branch road break-make control assembly, the first work branch break-make control assembly, the second soft start branch road break-make control assembly and the second work branch break-make control assembly are all connected with controller 2.
Concrete, the output of power supply is connected with the input of soft initiator 1, the output of soft initiator 1 is connected with two branch roads, wherein a branch road is connected with the first compressor 4, and between the soft initiator on this branch road 1 and the first compressor 4, be in series with the first soft start branch road break-make control assembly, in the present embodiment, described the first soft start branch road break-make control assembly is the first contactor 3, and this branch road is the first soft start branch road; Another branch road is connected with the second compressor 6, and between the soft initiator on this branch road 1 and the second compressor 6, be in series with the second soft start branch road break-make control assembly, in the present embodiment, described the second soft start branch road break-make control assembly is the 3rd contactor 5, and this branch road is also the second soft start branch road.
The output that is provided with power supply on soft initiator 1 is also connected with two branch roads, wherein the other end of a branch road is connected with the first compressor 4, and be in series with the first work branch break-make control assembly between the power supply of this branch road and the first compressor 4, in the present embodiment, described the first work branch break-make control assembly is the second contactor 8, and this branch road is the first work branch; The other end of another branch road is connected with the second compressor 6, and be in series with the second work branch break-make control assembly between the power supply of this branch road and the second compressor, in the present embodiment, described the second work branch break-make control assembly is the 4th contactor 7, and this branch road is also the second work branch.
Described the first contactor 3, the second contactor 8, the 3rd contactor 5 and the 4th contactor 7 are respectively by closed or disconnect being switched on or switched off of each branch road of controlling place.
On described soft initiator 1, be provided with starter and open accessory 11, starter is opened accessory 11 for controlling the unlatching of soft initiator 1 or closing, in the present embodiment, as preferably, starter is opened on accessory 11 and is provided with two contactor auxiliary contact in parallel, be respectively the first contactor auxiliary contact 111 and the 3rd contactor auxiliary contact 112, the first contactor auxiliary contact 111 are corresponding with the first contactor 3, when the first contactor 3 closure, the first contactor auxiliary contact 111 are also closed, touch soft initiator 1 entry into service.The 3rd contactor auxiliary contact 112 are corresponding with the 3rd contactor 5, and when the 3rd contactor 5 closure, the 3rd contactor auxiliary contact 112 are also closed, touch soft initiator 1 entry into service.
In the present embodiment, described the first contactor auxiliary contact 111 and the first contactor 3 or the 3rd contactor auxiliary contact 112 and the 3rd contactor 5 sequential can be identical, also can be different.
In the present embodiment, on described soft initiator, be also provided with signal feedback module 12, described signal feedback module 12 is connected with described controller 2, for startup settling signal being fed back to described controller 2.
Embodiment of the method:
Fig. 1 is the two compressor soft-start method flow charts that the utility model specific embodiment provides.As shown in Figure 1, this kind two compressor soft-start methods comprise the following steps:
S101: controller is controlled the first compressor and connected with one of them the soft start branch road being connected in the second compressor, be connected on soft initiator on described soft start branch road and by the starter on it, opened accessory and trigger and open, when described soft initiator is opened, drive and be switched on the compressor that branch road is connected and open.
S102: after described compressor start completes, soft initiator feeds back to controller by startup settling signal.
S103: controller receives and starts after settling signal, the soft start branch road being switched on described in control disconnects, and described soft initiator is closed, and the work branch being connected between the compressor being unlocked described in simultaneously controlling and power supply is connected.
S104: repeating step S101～S103, described controller is controlled another unlatching in described the first compressor and the second compressor.
Below in conjunction with Fig. 2, describe the above-mentioned details that each is processed in detail.Fig. 2 is the flow chart of a kind of preferred process scheme of the two compressor soft-start methods that provide of the utility model specific embodiment, as shown in Figure 2, comprises the following steps:
S201: it is closed that controller is controlled the first transmitter to the first contactor transmitted signal, and described the first contactor auxiliary contact are also closed, the closure of the first contactor auxiliary contact triggers soft initiator and starts to start, soft initiator starts to start rear drive the first compressor starts running, and soft initiator and the first compressor complete startup at one time.In the present embodiment, described the first contactor auxiliary contact and the first contactor can be simultaneously closed, also can be later than the closing time of the first contactor.
S202: after the first compressor start completes, described soft initiator feeds back to described controller by signal feedback module by startup settling signal.
S203: controller receives and starts after settling signal, controls the first contactor and disconnects, and the first contactor auxiliary contact also disconnect, after the first contactor auxiliary contact disconnect, described soft initiator is also closed, and it is closed that controller is controlled the second contactor simultaneously, and the first compressor is switched on power.
S204: it is closed that controller is controlled the 3rd transmitter to the 3rd contactor transmitted signal, and described the 3rd contactor auxiliary contact are also closed, the closure of the 3rd contactor auxiliary contact triggers soft initiator and starts to start, soft initiator starts to start rear drive the second compressor starts running, and soft initiator and the second compressor complete startup at one time.In the present embodiment, described the 3rd contactor auxiliary contact and the 3rd contactor can be simultaneously closed, also can be later than the closing time of the 3rd contactor.
S205: after the second compressor start completes, described soft initiator feeds back to described controller by signal feedback module by startup settling signal.
S206: controller receives and starts after settling signal, controls the 3rd contactor and disconnects, and the 3rd contactor auxiliary contact also disconnect, after the 3rd contactor auxiliary contact disconnect, described soft initiator is also closed, and it is closed that controller is controlled the 4th contactor simultaneously, and the second compressor is switched on power.
Adopt this kind two compressor soft-start methods, saved a soft initiator, reduced cost.And solved the sequence problem of compressor and bypass changeover while using a soft initiator to control two compressors to open, and sequential processing is improper, soft initiator report fault, cannot start the problem of compressor again.The frequency converter price of using during with respect to variable frequency starting is lower, and the market competitiveness is strong.And electric current is very low while carrying out soft start, can not impact electricity piece and electrical network.
Know-why of the present utility model has below been described in conjunction with specific embodiments.These are described is in order to explain principle of the present utility model, and can not be interpreted as by any way the restriction to the utility model protection range.Explanation based on herein, those skilled in the art does not need to pay performing creative labour can associate other embodiment of the present utility model, within these modes all will fall into protection range of the present utility model.
Claims (6)
1. a compressor soft starting device, comprise two compressors, it is characterized in that, described two compressors are connected in parallel on same soft initiator, between two compressors, be provided with interlock circuit, thereby realize a soft initiator, drive two compressors successively to start.
2. two compressor soft starting devices according to claim 1, is characterized in that, comprising: the first compressor (4) and the second compressor (6),
Described the first compressor (4) is connected with one end of the first work branch with the first soft start branch road being in parallel, and the other end that described the first soft start branch road is in parallel with the first work branch is connected with power supply;
On described the first soft start branch road, be in series with a first soft start branch road break-make control assembly and a soft initiator (1);
On described soft initiator (1), be provided with starter and open accessory;
In described the first work branch, be in series with a first work branch break-make control assembly;
Described the second compressor (6) is connected with one end of the second work branch with the second soft start branch road being in parallel, and the other end that described the second soft start branch road is in parallel with the second work branch is connected with power supply;
On described the second soft start branch road, be in series with a second soft start branch road break-make control assembly, and described soft initiator (1) is also connected on the second soft start branch road;
In described the second work branch, be in series with a second work branch break-make control assembly;
Described the first soft start branch road break-make control assembly, the first work branch break-make control assembly, the second soft start branch road break-make control assembly and the second work branch break-make control assembly are all connected with controller (2).
3. two compressor soft starting devices according to claim 2, is characterized in that,
Described the first soft start branch road break-make control assembly and the second soft start branch road break-make control assembly are contactor;
Described starter is opened on accessory and is provided with two contactor auxiliary contact in parallel, described two contactor auxiliary contact are used for triggering soft initiator and open, one of them is corresponding with the first soft start branch road break-make control assembly, and another is corresponding with the second soft start branch road break-make control assembly.
4. two compressor soft starting devices according to claim 2, is characterized in that,
On described soft initiator (1), be also provided with signal feedback module (12), described signal feedback module (12) is connected with described controller (2), for startup settling signal being fed back to described controller (2).
5. two compressor soft starting devices according to claim 2, is characterized in that, described the first work branch break-make control assembly and the second work branch break-make control assembly are contactor.
6. two compressor soft starting devices according to claim 3, is characterized in that, the contactor auxiliary contact sequential that described the first soft start branch road break-make control assembly or the second soft start branch road break-make control assembly are corresponding with it is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320496167.2U CN203445816U (en) | 2013-08-14 | 2013-08-14 | Two compressor soft start apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320496167.2U CN203445816U (en) | 2013-08-14 | 2013-08-14 | Two compressor soft start apparatus |
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| CN203445816U true CN203445816U (en) | 2014-02-19 |
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| CN201320496167.2U Expired - Lifetime CN203445816U (en) | 2013-08-14 | 2013-08-14 | Two compressor soft start apparatus |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104158445A (en) * | 2014-09-03 | 2014-11-19 | 中船重工（武汉）船舶与海洋工程装备设计有限公司 | Frequency-conversion soft starter |
| CN105065245A (en) * | 2015-07-23 | 2015-11-18 | 珠海格力电器股份有限公司 | Refrigeration equipment and compressor soft start device and method |
| CN105305887A (en) * | 2015-11-20 | 2016-02-03 | 上海凯伟电气设备有限公司 | Soft start control box |
| CN111817609A (en) * | 2019-04-11 | 2020-10-23 | 株洲中车时代电气股份有限公司 | Soft start method and system for motor |
-
2013
- 2013-08-14 CN CN201320496167.2U patent/CN203445816U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104158445A (en) * | 2014-09-03 | 2014-11-19 | 中船重工（武汉）船舶与海洋工程装备设计有限公司 | Frequency-conversion soft starter |
| CN105065245A (en) * | 2015-07-23 | 2015-11-18 | 珠海格力电器股份有限公司 | Refrigeration equipment and compressor soft start device and method |
| CN105305887A (en) * | 2015-11-20 | 2016-02-03 | 上海凯伟电气设备有限公司 | Soft start control box |
| CN111817609A (en) * | 2019-04-11 | 2020-10-23 | 株洲中车时代电气股份有限公司 | Soft start method and system for motor |
| CN111817609B (en) * | 2019-04-11 | 2022-08-12 | 株洲中车时代电气股份有限公司 | Soft start method and system for motor |
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Granted publication date: 20140219 |