CN109826820B - Smoke exhaust fan control circuit and smoke exhaust control system - Google Patents
Smoke exhaust fan control circuit and smoke exhaust control system Download PDFInfo
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- CN109826820B CN109826820B CN201910151677.8A CN201910151677A CN109826820B CN 109826820 B CN109826820 B CN 109826820B CN 201910151677 A CN201910151677 A CN 201910151677A CN 109826820 B CN109826820 B CN 109826820B
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Abstract
The application relates to a smoke exhaust fan control circuit and a smoke exhaust control system. The smoke exhaust fan control circuit comprises a signal access module and a smoke exhaust fan power supply control module; the first end of the signal access module is connected with the first end of the smoke exhaust fan power supply control module, and the second end of the signal access module is connected with the anode of the power supply; the second end of the smoke exhaust fan power supply control module is used for being connected with the negative electrode of the power supply; the signal access module is conducted when receiving the fire alarm signal, so that the power supply control module of the smoke exhaust fan conducts a power supply loop of the smoke exhaust fan based on the electric energy of the power supply; the fire alarm signal includes the smoke damper opening signal that the smoke damper sent, the automatic remote start signal that automatic alarm system of conflagration sent or the artifical remote start signal that fire alarm coordinated control system sent for this application can avoid can't starting the problem of smoke exhaust fan because of conflagration automatic alarm system and fire alarm coordinated control system break down, and then has improved the reliability of starting smoke exhaust fan.
Description
Technical Field
The application relates to the technical field of fire control, especially relates to a smoke exhaust fan control circuit and smoke exhaust control system.
Background
The smoke exhaust system is a necessary component in a building fire protection system, when a fire disaster occurs in a building, the smoke exhaust system of an evacuation channel is opened, and smoke is guided out of a fire prevention area by using a smoke exhaust fan of the smoke exhaust system so as to ensure the personal safety of personnel in the building.
In the traditional technology, according to the national standard of automatic fire alarm design specification (GB50116-2013), the control mode of the smoke exhaust system is that when the automatic fire alarm system detects a fire, the fire linkage control system sends an instruction to control a smoke exhaust valve of the smoke exhaust system, the smoke exhaust valve returns a signal to the fire linkage control system after acting in place, and the fire linkage control system sends an instruction to control a smoke exhaust fan of the smoke exhaust system again to realize a smoke exhaust function, however, in the implementation process, an inventor finds that at least the following problems exist in the traditional technology: the reliability of the conventional technology of smoke discharge control is low.
Disclosure of Invention
In view of the above, it is necessary to provide a control circuit of a smoke exhaust fan and a smoke exhaust control system for solving the problem of low reliability of smoke exhaust control in the conventional art.
In order to achieve the above object, in one aspect, an embodiment of the present application provides a control circuit of a smoke exhaust fan, including a signal access module and a smoke exhaust fan power supply control module;
the first end of the signal access module is connected with the first end of the smoke exhaust fan power supply control module, and the second end of the signal access module is connected with the anode of the power supply; the second end of the smoke exhaust fan power supply control module is used for being connected with the negative electrode of the power supply;
the signal access module is conducted when receiving the fire alarm signal, so that the power supply control module of the smoke exhaust fan conducts a power supply loop of the smoke exhaust fan based on the electric energy of the power supply; the fire alarm signal comprises a smoke exhaust valve opening signal sent by a smoke exhaust valve, an automatic remote starting signal sent by an automatic fire alarm system or a manual remote starting signal sent by a fire alarm linkage control system.
In one embodiment, the system further comprises a delay on-off module and a delay on-off control module;
the first end of the delay on-off module is connected with the first end of the delay on-off control module, the second end of the delay on-off module is connected with the first end of the signal access module, and the third end of the delay on-off module is connected with the first end of the smoke exhaust fan power supply control module;
the second end of the delay on-off control module is connected with the second end of the signal access module, and the third end of the delay on-off control module is connected with the second end of the smoke exhaust fan power supply control module.
In one embodiment, the power supply further comprises a first power-off module;
the first power-off module is connected between the delay on-off module and the smoke exhaust fan power supply control module.
In one embodiment, the power supply further comprises a second power-off module;
the second power-off module is connected between the first power-off module and the smoke exhaust fan power supply control module.
In one embodiment, the system further comprises a status indication module;
the first end of the state indicating module is connected with the third end of the smoke exhaust fan power supply control module, the second end of the state indicating module is connected with the second end of the signal access module, and the third end of the state indicating module is connected with the second end of the smoke exhaust fan power supply control module.
In one embodiment, the signal access module comprises a first type of normally open switch controlled by a smoke exhaust valve, a second type of normally open switch controlled by an automatic fire alarm system and a third type of normally open switch controlled by a fire alarm linkage control system;
the first end of the first type of normally open switch, the first end of the second type of normally open switch and the first end of the third type of normally open switch are connected with the second end of the time-delay on-off module; and the second end of the first type of normally-open switch, the second end of the second type of normally-open switch and the second end of the third type of normally-open switch are used for being connected with the positive electrode of the power supply.
In one embodiment, the fume extractor power supply control module comprises a first coil;
the first end of the first coil is connected with the third end of the delay on-off module, and the second end of the first coil is used for being connected with the negative electrode of the power supply.
In one embodiment, the signal access module further comprises a first normally open switch controlled by the first coil;
the first end of the first normally open switch is connected with the second end of the delay on-off module, and the second end of the first normally open switch is used for being connected with the positive electrode of the power supply.
In one embodiment, the delay on-off control module comprises a second coil and a first type of normally closed switch controlled by the smoke exhaust valve; the delay on-off module comprises a first normally closed switch controlled by the second coil;
the first end of the second coil is connected with the first end of the first type of normally closed switch, and the second end of the second coil is connected with the second end of the smoke exhaust fan power supply control module; the second end of the first type of normally closed switch is connected with the second end of the signal access module;
the first normally closed switch is connected between the signal access module and the smoke exhaust fan power supply control module.
In one embodiment, the state indicating module comprises a second normally open switch and a second normally closed switch controlled by the first coil, and further comprises a first indicating lamp and a second indicating lamp;
the first end of the second normally open switch is connected with the first end of the first indicator light, and the second end of the second normally open switch is connected with the second end of the signal access module; the second end of the first indicator light is connected with the second end of the smoke exhaust fan power supply control module;
the first end of the second normally closed switch is connected with the first end of the second indicator light, and the second end of the second normally closed switch is connected with the second end of the signal access module; the second end of the second indicator light is connected with the second end of the smoke exhaust fan power supply control module.
On the other hand, the smoke exhaust control system comprises an automatic fire alarm system, a fire alarm linkage control system, a smoke exhaust valve and a fire alarm module box; the control circuit of the smoke exhaust fan is also included;
the smoke exhaust fan control circuit is respectively connected with the fire alarm linkage control system, the smoke exhaust valve and the fire alarm module box; the fire automatic alarm system is respectively connected with the fire alarm module box and the smoke exhaust valve.
One of the above technical solutions has the following advantages and beneficial effects:
the embodiment of each smoke exhaust fan control circuit provided by the application comprises a signal access module and a smoke exhaust fan power supply control module; the first end of the signal access module is connected with the first end of the smoke exhaust fan power supply control module, and the second end of the signal access module is connected with the anode of the power supply; the second end of the smoke exhaust fan power supply control module is used for being connected with the negative electrode of the power supply; the signal access module is conducted when receiving the fire alarm signal, so that the power supply control module of the smoke exhaust fan conducts a power supply loop of the smoke exhaust fan based on the electric energy of the power supply; the fire alarm signal includes the smoke damper opening signal that the smoke damper sent, the automatic remote start signal that automatic alarm system of conflagration sent or the artifical remote start signal that fire alarm coordinated control system sent, make this application smoke exhaust fan control circuit can be controlled by the smoke damper, automatic alarm system of conflagration and fire alarm coordinated control system, and avoid the problem that can't start the smoke exhaust fan because of automatic alarm system of conflagration and fire alarm coordinated control system break down, the reliability of starting the smoke exhaust fan has been improved, and then can in time start the smoke exhaust fan and discharge fume when the conflagration, reduce the injury of flue gas to personnel.
Drawings
Fig. 1 is a schematic structural diagram of a control circuit of a smoke exhaust fan according to an embodiment of the present application;
fig. 2 is a circuit configuration diagram of a control circuit of the smoke exhaust fan according to the present application in one embodiment;
fig. 3 is a schematic structural diagram of a control circuit of a smoke exhaust fan according to another embodiment of the present application;
FIG. 4 is a schematic diagram of a control circuit of a smoke exhaust fan according to another embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of a control circuit of a smoke exhaust fan according to still another embodiment of the present application;
fig. 6 is a schematic structural diagram of the smoke evacuation control system according to the present application in one embodiment.
Detailed Description
To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are shown in the drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element and be integral therewith, or intervening elements may also be present. The terms "first end," "second end," and the like are used herein for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In order to solve the problem of low reliability of the smoke exhaust control in the prior art, in one embodiment, as shown in fig. 1, a smoke exhaust fan control circuit is provided, which includes a signal access module 11 and a smoke exhaust fan power supply control module 13;
the first end of the signal access module 11 is connected with the first end of the smoke exhaust fan power supply control module 13, and the second end is used for connecting the anode of the power supply; the second end of the smoke exhaust fan power supply control module 13 is used for connecting the negative pole of the power supply;
the signal access module 11 is turned on when receiving a fire alarm signal, so that the power supply control module 13 of the smoke exhaust fan turns on a power supply loop of the smoke exhaust fan based on the electric energy of the power supply; the fire alarm signal comprises a smoke exhaust valve opening signal sent by a smoke exhaust valve, an automatic remote starting signal sent by an automatic fire alarm system or a manual remote starting signal sent by a fire alarm linkage control system.
It should be noted that, in the actual use process, the control circuit of the smoke exhaust fan of the application is connected into a fire-fighting system in a building.
The signal access module is a controlled end of the smoke exhaust fan control circuit, so that the smoke exhaust fan control circuit can receive external control to switch on a power supply loop of the smoke exhaust fan and start the smoke exhaust fan. Specifically, the signal access module receives a fire alarm signal sent by external equipment, and the signal access module is switched on inside when receiving the fire alarm signal, so that the electric energy of the power supply is transmitted to the smoke exhaust fan power supply control module. Specifically, the fire alarm signal is a control signal sent by fire fighting equipment (e.g., an automatic fire alarm system, a fire alarm linkage control system, a smoke exhaust valve, etc.) in the building to a smoke exhaust fan control circuit when a fire occurs in the building, and in one example, the fire alarm signal includes a smoke exhaust valve opening signal sent by the smoke exhaust valve, an automatic remote start signal sent by the automatic fire alarm system, or a manual remote start signal sent by the fire alarm linkage control system. It should be noted that the automatic fire alarm system is installed in the fire control room and is a background signal collecting device for each fire probe; the fire alarm linkage control system is arranged in a fire control room, is a component of the automatic fire alarm system and is used for monitoring equipment related to fire protection; the smoke exhaust valve is installed in an evacuation channel of a building and is used for exhausting smoke when opened. In one example, the signal access module can be realized by adopting a single chip microcomputer, and when a fire alarm signal is received, the electric energy of the power supply is transmitted to the smoke exhaust fan power supply control module.
In a specific embodiment, as shown in fig. 2, the signal access module comprises a first type of normally open switch ZJ controlled by a smoke exhaust valve, a second type of normally open switch HJ controlled by an automatic fire alarm system, and a third type of normally open switch HA1 controlled by a fire alarm coordinated control system;
the first end of the first type of normally open switch ZJ, the first end of the second type of normally open switch HJ and the first end of the third type of normally open switch HA1 are all connected with the second end of the delay on-off module 17; the second end of the first type of normally open switch ZJ, the second end of the second type of normally open switch HJ and the second end of the third type of normally open switch HA1 are used for being connected with the positive electrode of the power supply.
It should be noted that the first-type normally-open switches are in one-to-one correspondence with the smoke exhaust valves, in other words, the smoke exhaust valves are installed at different positions in the evacuation passage of the building, each smoke exhaust valve corresponds to one first-type normally-open switch in the signal access module, and each first-type normally-open switch in the signal access module is connected in parallel. When a fire disaster happens, when a smoke exhaust valve is opened, the corresponding first type of normally open switch is closed, the signal access module is internally conducted, namely, the smoke exhaust valve opening signal is transmitted through the closing of the first type of normally open switch.
The second type normally open switch is controlled by a fire automatic alarm system, when a fire breaks out, the automatic alarm system controls the second type normally open switch to be closed, the signal access module is internally conducted, and the automatic remote starting signal is transmitted equivalently through the closing of the second type normally open switch. The third type normally-open switch is controlled by a fire alarm linkage control system, when a fire disaster occurs, the fire alarm linkage control system controls the third type normally-open switch to be closed, the signal access module is internally switched on, and the manual remote starting signal is transmitted equivalently through the closing of the third type normally-open switch.
Adopt the signal access module that above-mentioned first type normally opened switch, second type normally opened switch and third type normally opened switch formed, simple structure easily realizes can reducing smoke exhaust fan control circuit's manufacturing cost.
The power supply control module of the smoke exhaust fan is used for directly controlling the starting of the smoke exhaust fan, and after the signal access module is controlled to be switched on, the power supply control module of the smoke exhaust fan obtains the power supply of the power supply to switch on the power supply loop of the smoke exhaust fan.
In a particular embodiment, as shown in fig. 2, the fume exhaust fan power supply control module 13 comprises a first coil C;
the first end of the first coil C is connected with the third end of the delay on-off module 17, and the second end is used for connecting the negative electrode of the power supply. It should be noted that the first coil is a coil constituting a relay, a normally open switch constituting the relay is installed in a power supply circuit of the smoke exhaust fan, and when the first coil is powered on, the normally open switch in the power supply circuit is closed, and the smoke exhaust fan is powered on and started.
In a further specific embodiment, the signal access module 11 further comprises a first normally open switch C1 controlled by the first coil C; the first end of the first normally open switch C1 is connected to the second end of the delay on-off module 17, and the second end is used for connecting the positive pole of the power supply. It should be noted that, after the first coil is obtained, the first normally open switch is closed, so that the signal access module can be stably kept in a conducting state, and the problem that the smoke exhaust fan stops working due to the fact that the first coil is powered off because of the damage of the smoke exhaust valve, the automatic fire alarm system or the fire alarm linkage control system is avoided.
In another specific embodiment, the signal access module 11 further includes a fourth type normally open switch HA controlled by the field control box; the first end of the fourth type normally open switch HA is connected to the second end of the delay on-off module 17, and the second end is used for connecting the positive pole of the power supply. It should be noted that the fourth type of normally open switch is closed when receiving the control of the field control box, so as to turn on the inside of the signal access module. Furthermore, the signal access module further comprises a pull-up resistor RD, and the second end of the signal access module is connected with the positive pole of the power supply through the pull-up resistor RD.
In each embodiment of the control circuit of the smoke exhaust fan, the control circuit comprises a signal access module and a smoke exhaust fan power supply control module; the first end of the signal access module is connected with the first end of the smoke exhaust fan power supply control module, and the second end of the signal access module is connected with the anode of the power supply; the second end of the smoke exhaust fan power supply control module is used for being connected with the negative electrode of the power supply; the signal access module is conducted when receiving the fire alarm signal, so that the power supply control module of the smoke exhaust fan conducts a power supply loop of the smoke exhaust fan based on the electric energy of the power supply; the fire alarm signal includes the smoke damper opening signal that the smoke damper sent, the automatic remote start signal that automatic alarm system of conflagration sent or the artifical remote start signal that fire alarm coordinated control system sent, make this application smoke exhaust fan control circuit can be controlled by the smoke damper, automatic alarm system of conflagration and fire alarm coordinated control system, and avoid the problem that can't start the smoke exhaust fan because of automatic alarm system of conflagration and fire alarm coordinated control system break down, the reliability of starting the smoke exhaust fan has been improved, and then can in time start the smoke exhaust fan and discharge fume when the conflagration, reduce the injury of flue gas to personnel.
In one embodiment, as shown in fig. 3, the system further includes a delay on-off module and a delay on-off control module;
the first end of the delay on-off module 17 is connected with the first end of the delay on-off control module 19, the second end is connected with the first end of the signal access module 11, and the third end is connected with the first end of the smoke exhaust fan power supply control module 13;
the second end of the delay on-off control module 19 is connected with the second end of the signal access module 11, and the third end is connected with the second end of the smoke exhaust fan power supply control module 13.
It should be noted that the delay on-off module is used for transmitting the electric energy of the power supply transmitted by the signal access module to the smoke exhaust fan power supply control module in a delay manner when a fire disaster occurs. In one example, the time delay on-off module is a time delay switch. And the delay on-off control module controls the start of the delay on-off module when receiving a smoke exhaust valve opening signal sent by the smoke exhaust valve. In one example, the delayed on-off control module can be realized by adopting a single chip microcomputer, and the delayed on-off control module is controlled to be started in a delayed mode when the single chip microcomputer is powered on. The delay time of the delay on-off module can be determined according to actual requirements.
In a specific embodiment, as shown in fig. 2, the delay on-off control module 19 includes a second coil TJ and a first type of normally closed switch ZJ controlled by the smoke exhaust valve; the time-delay on-off module 17 comprises a first normally closed switch TJ controlled by a second coil TJ;
the first end of the second coil TJ is connected with the first end of the first type of normally closed switch ZJ, and the second end of the second coil TJ is connected with the second end of the smoke exhaust fan power supply control module 13; the second end of the first normally closed switch ZJ is connected with the second end of the signal 11 access module;
the first normally closed switch TJ is connected between the signal access module 11 and the smoke exhaust fan power supply control module 13.
It should be noted that the second coil is a coil constituting the time delay relay, and the first normally-closed switch is a switch constituting the time delay relay, that is, the second coil and the first normally-closed switch constitute the time delay relay, and after the second coil is powered on, the first normally-closed switch is controlled to be closed.
The first type of normally closed switches correspond to smoke exhaust valves installed in evacuation channels of the building one by one, namely the number of the first type of normally closed switches is equal to that of the smoke exhaust valves, and the first type of normally closed switches are sequentially connected in series in the time-delay on-off control module. When a fire disaster happens and any smoke exhaust valve is started, the corresponding first type of normally closed switch is switched off, the second coil loses power, the first normally closed switch is switched from the off state to the on state through time delay, and the signal access module and the smoke exhaust fan power supply control module are switched on. The delay on-off module and the delay on-off control module are designed by utilizing the structure of the delay relay, so that the structures of the delay on-off module and the delay on-off control module are simple and easy to realize, and the cost of a smoke exhaust fan control circuit is reduced.
In each embodiment of the smoke exhaust fan control circuit, the delay on-off module is utilized to communicate the signal access module and the smoke exhaust fan power supply control module under the control of the delay on-off control module, so that the smoke exhaust fan is started after the smoke exhaust valve is completely opened, the overload operation of the smoke exhaust fan is avoided, the safe operation of a smoke exhaust system is ensured, the smoke exhaust fan control circuit is also protected, and the safety performance of the smoke exhaust fan control circuit is improved.
In one embodiment, as shown in FIG. 4, a first power-down module 41 is also included;
the first power-off module 41 is connected between the delay on-off module 17 and the smoke exhaust fan power supply control module 13.
Further, a second power-off module 43 is also included;
the second power cutoff module 43 is connected between the first power cutoff module 41 and the smoke exhaust fan power supply control module 13.
It should be noted that, during practical use, the first power-off module is arranged in the control cabinet of the fire alarm coordinated control system and used for the relevant staff to stop the operation of the smoke exhaust fan in the fire control room, specifically, after the smoke exhaust fan is started, the first power-off module switches the connection of the signal access module and the smoke exhaust fan power supply control module, so that the smoke exhaust fan power supply control module is powered off, and the operation of the smoke exhaust fan is stopped. As shown in fig. 2, the first power-off module is a manual switch TA1, and the second power-off module is a manual switch TA.
During actual use, the second power-off module is arranged in a field control box in a building and used for related workers to stop the operation of the smoke exhaust fan on the spot in a fire disaster, and specifically, after the smoke exhaust fan is started, the second power-off module switches the connection of the signal access module and the smoke exhaust fan power supply control module, so that the smoke exhaust fan power supply control module is powered off, and the operation of the smoke exhaust fan is stopped.
In one embodiment, as shown in FIG. 5, a status indication module is also included;
the first end of the status indication module 51 is connected to the third end of the smoke exhaust fan power supply control module 13, the second end is connected to the second end of the signal access module 11, and the third end is connected to the second end of the smoke exhaust fan power supply control module 13.
It should be noted that the state indication module is used for prompting the current state of the control circuit of the smoke exhaust fan, including a start state, a close state, and the like. The state indicating module is controlled by the smoke exhaust fan power supply control module, and prompts the smoke exhaust fan control circuit to be in a starting state when the smoke exhaust fan power supply control module is powered on; when the power supply control module of the smoke exhaust fan loses power, the state indicating module prompts that the control circuit of the smoke exhaust fan is in a closed state.
In a specific embodiment, as shown in fig. 2, the status indication module 51 includes a second normally open switch C2, a second normally closed switch C3 controlled by the first coil C, and further includes a first indicator light HD and a second indicator light LD;
a first end of the second normally open switch C2 is connected to a first end of the first indicator light HD, and a second end is connected to a second end of the signal access module 11; the second end of the first indicator light HD is connected with the second end of the smoke exhaust fan power supply control module 13;
a first end of the second normally closed switch C3 is connected to a first end of the second indicator light LD, and a second end is connected to a second end of the signal access module 11; the second end of the second indicator light LD is connected to the second end of the smoke exhaust fan power supply control module 13.
When the first coil is powered off, the first normally open switch is turned off, the second normally closed switch is turned on, and the second indicator light is turned on to prompt that the smoke exhaust fan control circuit is in a closed state;
when the first coil loses power, the first normally-open switch is closed, the second normally-closed switch is disconnected, the first indicator lamp is on, and the smoke exhaust fan control circuit is prompted to be in a starting state. In one example, the first indicator light is a red indicator light and the second indicator light is a green indicator light.
In each embodiment of this application smoke exhaust fan control circuit, through the running state of state indication module suggestion smoke exhaust fan control circuit, make things convenient for relevant personnel to observe smoke exhaust fan control circuit's running state.
In one embodiment, as shown in fig. 6, there is also provided a smoke exhaust control system, comprising an automatic fire alarm system 61, a fire alarm coordinated control system 63, a smoke exhaust valve 65 and a fire alarm module box 67; the control circuit also comprises a control circuit 69 of the smoke exhaust fan in each embodiment of the control circuit of the smoke exhaust fan;
the smoke exhaust fan control circuit 69 is respectively connected with the fire alarm linkage control system 63, the smoke exhaust valve 65 and the fire alarm module box 67; the automatic fire alarm system 61 is respectively connected with a fire alarm module box 67 and a smoke exhaust valve 65.
It should be noted that, when a fire occurs, a fire alarm signal can be sent to the smoke exhaust fan control circuit by any one direction of the automatic fire alarm system, the fire alarm linkage control system and the smoke exhaust valve, or when the automatic fire alarm system, the fire alarm linkage control system and the fire alarm module box all have faults, a fire alarm signal is directly sent to the smoke exhaust fan control circuit by the smoke exhaust valve. The fire alarm module box is installed in a building site and is a site signal receiving and transmitting device of an automatic fire alarm system.
In each embodiment of this application control system that discharges fume, directly send out fire alarm signal to smoke exhaust fan control circuit through the valve of discharging fume, avoided when conflagration automatic alarm system, fire alarm coordinated control system, fire alarm module case all break down, the problem of unable start smoke exhaust fan has improved the reliability that the building discharged fume when taking place the conflagration.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (9)
1. A control circuit of a smoke exhaust fan is characterized by comprising a signal access module and a smoke exhaust fan power supply control module;
the first end of the signal access module is connected with the first end of the smoke exhaust fan power supply control module, and the second end of the signal access module is used for being connected with the anode of a power supply; the second end of the smoke exhaust fan power supply control module is used for being connected with the negative electrode of the power supply;
the signal access module is conducted when receiving a fire alarm signal sent by external equipment, so that the power supply control module of the smoke exhaust fan conducts a power supply loop of the smoke exhaust fan based on the electric energy of the power supply; the fire alarm signal comprises a smoke exhaust valve opening signal sent by a smoke exhaust valve, an automatic remote starting signal sent by an automatic fire alarm system or a manual remote starting signal sent by a fire alarm linkage control system;
the smoke exhaust fan control circuit also comprises a delay on-off module and a delay on-off control module;
the first end of the delay on-off module is connected with the first end of the delay on-off control module, the second end of the delay on-off module is connected with the first end of the signal access module, and the third end of the delay on-off module is connected with the first end of the smoke exhaust fan power supply control module; the second end of the delay on-off control module is connected with the second end of the signal access module, and the third end of the delay on-off control module is connected with the second end of the smoke exhaust fan power supply control module;
the delay on-off control module comprises a second coil and a first type of normally closed switch controlled by the smoke exhaust valve; the delay on-off module comprises a first normally closed switch controlled by the second coil; the first end of the second coil is connected with the first end of the first type of normally closed switch, and the second end of the second coil is connected with the second end of the smoke exhaust fan power supply control module; the second end of the first type of normally closed switch is connected with the second end of the signal access module; the first normally closed switch is connected between the signal access module and the smoke exhaust fan power supply control module.
2. The smoke exhaust fan control circuit of claim 1 further comprising a first power down module;
the first power-off module is connected between the delay on-off module and the smoke exhaust fan power supply control module.
3. The smoke exhaust fan control circuit of claim 2 further comprising a second power off module;
the second power-off module is connected between the first power-off module and the smoke exhaust fan power supply control module.
4. The smoke exhaust fan control circuit according to any one of claims 1 to 3, further comprising a status indication module;
the first end of the state indicating module is connected with the third end of the smoke exhaust fan power supply control module, the second end of the state indicating module is connected with the second end of the signal access module, and the third end of the state indicating module is connected with the second end of the smoke exhaust fan power supply control module.
5. The smoke exhaust fan control circuit according to claim 4, wherein the signal access module comprises a first type of normally open switch controlled by the smoke exhaust valve, a second type of normally open switch controlled by the automatic fire alarm system, and a third type of normally open switch controlled by the fire alarm coordinated control system;
the first end of the first type of normally open switch, the first end of the second type of normally open switch and the first end of the third type of normally open switch are connected with the second end of the delay on-off module; and the second end of the first type of normally-open switch, the second end of the second type of normally-open switch and the second end of the third type of normally-open switch are used for being connected with the anode of the power supply.
6. The smoke exhaust fan control circuit of claim 5 wherein the smoke exhaust fan power control module comprises a first coil;
and the first end of the first coil is connected with the third end of the delay on-off module, and the second end of the first coil is used for being connected with the negative electrode of the power supply.
7. The smoke exhaust fan control circuit of claim 6 wherein the signal access module further comprises a first normally open switch controlled by the first coil;
and the first end of the first normally open switch is connected with the second end of the delay on-off module, and the second end of the first normally open switch is connected with the anode of the power supply.
8. The smoke exhaust fan control circuit according to claim 6, wherein the status indication module comprises a second normally open switch, a second normally closed switch controlled by the first coil, a first indicator light and a second indicator light;
the first end of the second normally open switch is connected with the first end of the first indicator light, and the second end of the second normally open switch is connected with the second end of the signal access module; the second end of the first indicator light is connected with the second end of the smoke exhaust fan power supply control module;
the first end of the second normally closed switch is connected with the first end of the second indicator light, and the second end of the second normally closed switch is connected with the second end of the signal access module; and the second end of the second indicator light is connected with the second end of the smoke exhaust fan power supply control module.
9. A smoke discharge control system is characterized by comprising an automatic fire alarm system, a fire alarm linkage control system, a smoke discharge valve and a fire alarm module box; further comprising a smoke exhaust fan control circuit according to any of claims 1 to 8;
the smoke exhaust fan control circuit is respectively connected with the fire alarm linkage control system, the smoke exhaust valve and the fire alarm module box; the fire automatic alarm system is respectively connected with the fire alarm module box and the smoke exhaust valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910151677.8A CN109826820B (en) | 2019-02-28 | 2019-02-28 | Smoke exhaust fan control circuit and smoke exhaust control system |
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| CN201910151677.8A CN109826820B (en) | 2019-02-28 | 2019-02-28 | Smoke exhaust fan control circuit and smoke exhaust control system |
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| CN109826820B true CN109826820B (en) | 2021-04-06 |
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| CN115738134A (en) * | 2022-11-18 | 2023-03-07 | 中国电建集团华东勘测设计研究院有限公司 | Intelligent smoke exhaust system suitable for offshore converter station and control method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN86203510U (en) * | 1986-05-15 | 1988-06-15 | 韩柏青 | Air cooled ventilator for transformer |
| CN204152822U (en) * | 2014-08-27 | 2015-02-11 | 内蒙古电力勘测设计院有限责任公司 | A kind of fire alarm system controls the device of draft fan |
| CN204144909U (en) * | 2014-09-09 | 2015-02-04 | 东莞市创业电气设备有限公司 | A kind of smoke exhaust fan control circuit with defencive function |
| CN205618417U (en) * | 2016-05-16 | 2016-10-05 | 中机国能电力工程有限公司 | Modified scram fan |
| CN108616221B (en) * | 2018-05-16 | 2020-10-02 | 广东中烟工业有限责任公司 | Fire-fighting fan actuating mechanism |
| CN109026780B (en) * | 2018-08-21 | 2024-03-29 | 广州市设计院集团有限公司 | Dual-purpose fan control device |
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