CN204099253U - A kind of fire-fighting is held concurrently the control system of dual-purpose Double Speed Fan at ordinary times - Google Patents
A kind of fire-fighting is held concurrently the control system of dual-purpose Double Speed Fan at ordinary times Download PDFInfo
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- CN204099253U CN204099253U CN201420467681.8U CN201420467681U CN204099253U CN 204099253 U CN204099253 U CN 204099253U CN 201420467681 U CN201420467681 U CN 201420467681U CN 204099253 U CN204099253 U CN 204099253U
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Abstract
The utility model relates to structural fire protection blower fan field, and particularly a kind of fire-fighting is held concurrently the control system of dual-purpose Double Speed Fan at ordinary times.Control system comprises: the first contactor, the second contactor, the 3rd contactor, fire-fighting control circuit and controller.This fire-fighting control circuit is used for controlling the first contactor when pressing danger button and disconnects, and the second contactor and the 3rd contactor close; Controller comprises normally closed control end and power end, and power end is connected with danger button, and normally closed control end is connected with the first contactor.The utility model is when pressing danger button, first contactor disconnects, second contactor, the 3rd contactor are closed, power end with Time Controller is connected and is triggered normally closed control end and disconnects, thus ensure that the first contactor very first time disconnected, avoid the first contactor and the 3rd contactor simultaneously closed and the short trouble that causes, ensure the safe operation of Double Speed Fan.
Description
Technical field
The utility model relates to structural fire protection blower fan field, and particularly a kind of fire-fighting is held concurrently the control system of dual-purpose Double Speed Fan at ordinary times.
Background technique
At present, the Design of ventilation of the underground parking garage of building needs to consider to carry out when fiery residence smoke evacuation simultaneously and dailyly to take a breath.Due to the difference of exhaust smoke level and exhaust air rate, in order to saving power, usually adopt fire-fighting to hold concurrently Double Speed Fan dual-purpose at ordinary times, run at high speed when fire, daily with low cruise.
Refer to Fig. 1, Fig. 1 is the circuit diagram of the Double Speed Fan of prior art.As shown in Figure 1, the Double Speed Fan 10 of prior art comprises high speed input end 11 and low speed input end 12, high speed input end 11 connects power supply 15 by the first switch 13, low speed input end 12 connects power supply 15 by second switch 14, one end of 3rd switch 16 is connected between low speed input end 12 and second switch 14, the other end short circuit of the 3rd switch 16.When daily ventilation, the first switch 13 and the 3rd switch 16 all disconnect, and second switch 14 closes, and the low speed input end 12 of Double Speed Fan 10 connects power supply 15 by second switch 14, Double Speed Fan 10 low cruise; When discharging fume, the first switch 13 and the 3rd switch 16 all closed, second switch 14 disconnects, and the high speed input end 11 of Double Speed Fan 10 connects power supply 15 by the first switch 13, Double Speed Fan 10 high speed operation.
When Double Speed Fan 10 proceeds to high speed operation from low cruise, the first switch 13 may be there is also do not close, but the 3rd switch 16 closes, and the situation that second switch 14 still closes, namely the 3rd switch 16 and second switch 14 locate closed state simultaneously, cause instantaneous short circuit thus, cause electric accident.
Model utility content
The control system that the utility model provides a kind of fire-fighting to hold concurrently dual-purpose Double Speed Fan at ordinary times, enables the instantaneous short circuit fault that may occur when avoiding Double Speed Fan to switch wind speed.
A kind of fire-fighting that the utility model provides is held concurrently the control system of dual-purpose Double Speed Fan at ordinary times,
Described Double Speed Fan to comprise when being switched on power by it described Double Speed Fan with the first input end of First Speed work, and when being switched on power by it described Double Speed Fan with the second input end of second speed work, wherein: described control system comprises: the first contactor, described first contactor is connected between described first input end and described power supply; Second contactor, described second contactor is connected between described second input end and described power supply; 3rd contactor, one end of described 3rd contactor is connected between described first contactor and described first input end, the other end short circuit of described 3rd contactor; Fire-fighting control circuit, it comprises danger button, and described fire-fighting control circuit is used for controlling described first contactor when pressing described danger button and disconnects, and described second contactor and described 3rd contactor close; Controller, it comprises normally closed control end and power end, and described normally closed control end is connected with described first contactor, and described power end is connected with described danger button.Because the normally closed control end of controller is normally closed, after therefore the power end of controller is energized, this normally closed control end will disconnect automatically.
Further, described controller is auxiliary reclay, and described control end is the normally closed auxiliary contact of described auxiliary reclay, and described normally closed auxiliary contact is connected with described first contactor.
Compared with prior art, beneficial effect is: the normally closed control end of the utility model controller and power end, connects respectively with the first contactor and danger button.When pressing danger button, first contactor disconnects, second contactor, the 3rd contactor are closed, with the power end of Time Controller, connection is triggered normally closed control end and disconnects, thus ensure that the first contactor very first time disconnected, avoid the first contactor and the 3rd contactor simultaneously closed and the short trouble that causes, ensure the safe operation of Double Speed Fan.
Accompanying drawing explanation
Fig. 1 is the principle schematic of existing Double Speed Fan.
Fig. 2 is the principle schematic of the Double Speed Fan control system of embodiment.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the technical solution of the utility model is further described.
Shown in Figure 2, Fig. 2 is the principle schematic of the control system of the Double Speed Fan of the utility model first embodiment.This Double Speed Fan 21 comprises first input end 211 and the second input end 212, and when Double Speed Fan 21 connects power supply 27 by first input end 211, Double Speed Fan 21 runs with First Speed; When Double Speed Fan 21 connects power supply 27 by the second input end 212, Double Speed Fan 21 runs with second speed.Preferably, First Speed is low speed, and second speed is at a high speed.It will be appreciated by persons skilled in the art that the low speed of Double Speed Fan and high speed are relative concepts.
As shown in Figure 2, the control system of the present embodiment comprises the first contactor 22, second contactor 23, the 3rd contactor 24, controller 25 and fire-fighting control circuit 26.Wherein, first contactor 22 is connected between first input end 211 and power supply 27, second contactor 23 is connected between the second input end 212 and power supply 27, and one end of the 3rd contactor 24 is connected between the first contactor 22 and first input end 211, the other end short circuit of the 3rd contactor 24.
Fire-fighting control circuit 26 comprises danger button (figure does not look), and when pressing danger button, the first contactor 22 disconnects, and the second contactor 23 and the 3rd contactor 24 close.Controller 25 comprises normally closed control end 251 and power end 252, and wherein normally closed control end 251 is connected with the first contactor 22, and power end 252 is connected with danger button.When the power end power end pressing danger button Time Controller is connected, and trigger normally closed control end 252 and disconnect, thus guarantee that the first loop, contactor 22 place disconnects, avoid the electric accident that the first contactor 22 and the 3rd contactor 24 close simultaneously.
Preferably, controller 25 is auxiliary reclay, and aforementioned normally closed control end 251 is the normally closed auxiliary contact of this auxiliary reclay, and this normally closed auxiliary contact 251 is connected with the first contactor 22.Can borrow power, controller 25 can replace with as other control units by those of ordinary skill in the art completely.
Below the working principle of Double Speed Fan control system is described in detail.
Double Speed Fan 21 is when carrying out daily ventilation, and the first contactor 22 closes, and the second contactor 23 and the 3rd contactor 23 disconnect, and the first input end 211 of Double Speed Fan 21 connects power supply 27 by the first contactor 22, Double Speed Fan 21 low cruise.Now, the danger button of fire-fighting control circuit 26 keeps original state, and controller 25 quits work because of power end 252 power-off, and normally closed control end 251 keeps on-state.
Double Speed Fan 21 is when running into fire-fighting accident and needing to discharge fume fast, high speed operation state is proceeded to from low-speed run state in order to make Double Speed Fan 21, staff can by the danger button of pressing fire-fighting control circuit, impel control first contactor 22 to disconnect, the second contactor 23 and the 3rd contactor 24 close.In the moment that danger button is pressed, the power end of controller 25 is connected, normally closed control end 251 is caused to disconnect instantaneously, thus guarantee that the first contactor 22 disconnected in the very first time, effectively avoid the second contactor 23 off state not yet, but the first contactor 22 and the short circuit accident of the 3rd contactor 24 simultaneously caused by closed state.
Claims (2)
1. a fire-fighting is held concurrently the control system of dual-purpose Double Speed Fan at ordinary times, described Double Speed Fan to comprise when being switched on power by it described Double Speed Fan with the first input end of First Speed work, and described Double Speed Fan, with the second input end of second speed work, is characterized in that when being switched on power by it: described control system comprises:
First contactor, described first contactor is connected between described first input end and described power supply;
Second contactor, described second contactor is connected between described second input end and described power supply;
3rd contactor, one end of described 3rd contactor is connected between described first contactor and described first input end, the other end short circuit of described 3rd contactor;
Fire-fighting control circuit, it comprises danger button, and described fire-fighting control circuit is used for controlling described first contactor when pressing described danger button and disconnects, and described second contactor and described 3rd contactor close;
Controller, it comprises normally closed control end and power end, and described normally closed control end is connected with described first contactor, and described power end is connected with described danger button.
2. control system according to claim 1, is characterized in that, described controller is auxiliary reclay, and described normally closed control end is the normally closed auxiliary contact of described auxiliary reclay, and described normally closed auxiliary contact is connected with described first contactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420467681.8U CN204099253U (en) | 2014-08-18 | 2014-08-18 | A kind of fire-fighting is held concurrently the control system of dual-purpose Double Speed Fan at ordinary times |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420467681.8U CN204099253U (en) | 2014-08-18 | 2014-08-18 | A kind of fire-fighting is held concurrently the control system of dual-purpose Double Speed Fan at ordinary times |
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| CN204099253U true CN204099253U (en) | 2015-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420467681.8U Active CN204099253U (en) | 2014-08-18 | 2014-08-18 | A kind of fire-fighting is held concurrently the control system of dual-purpose Double Speed Fan at ordinary times |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105387582A (en) * | 2015-12-30 | 2016-03-09 | 广西玉柴机器股份有限公司 | Ventilation control system and ventilation control method of commissioning chamber |
| CN107800349A (en) * | 2017-11-02 | 2018-03-13 | 中国航发哈尔滨东安发动机有限公司 | A kind of double-speed motor control circuit |
-
2014
- 2014-08-18 CN CN201420467681.8U patent/CN204099253U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105387582A (en) * | 2015-12-30 | 2016-03-09 | 广西玉柴机器股份有限公司 | Ventilation control system and ventilation control method of commissioning chamber |
| CN105387582B (en) * | 2015-12-30 | 2018-03-16 | 广西玉柴机器股份有限公司 | The ventilated control system and aeration control method of test-run a machine room |
| CN107800349A (en) * | 2017-11-02 | 2018-03-13 | 中国航发哈尔滨东安发动机有限公司 | A kind of double-speed motor control circuit |
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