CN111278254B - Intelligent temperature control system and method for elevator machine room - Google Patents
Intelligent temperature control system and method for elevator machine room Download PDFInfo
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- CN111278254B CN111278254B CN201811482262.0A CN201811482262A CN111278254B CN 111278254 B CN111278254 B CN 111278254B CN 201811482262 A CN201811482262 A CN 201811482262A CN 111278254 B CN111278254 B CN 111278254B
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20136—Forced ventilation, e.g. by fans
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20136—Forced ventilation, e.g. by fans
- H05K7/20181—Filters; Louvers
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Abstract
The invention discloses an intelligent temperature control system and method for an elevator machine room, which senses indoor temperature through an indoor temperature sensor and controls the state of corresponding aeration and cooling equipment according to the change of the indoor temperature, so that different aeration and cooling measures are provided when the indoor temperature changes in different temperature intervals, the corresponding aeration and cooling measures can be automatically adjusted according to the change of the indoor temperature, manual intervention is not needed, the labor intensity of workers is reduced, reasonable aeration and cooling measures are provided in different temperature intervals, namely, the temperature in the machine room is intelligently controlled, equipment or device faults caused by overhigh temperature in the elevator machine room are effectively avoided, and further, accidental casualties of elevator passengers are effectively prevented; on the other hand, the louver, the main exhaust fan and the air conditioner are flexibly controlled by combining the indoor temperature and the external environment temperature, the running states and relations of the louver, the main exhaust fan and the air conditioner are adjusted, and energy conservation is realized while the requirement of the temperature in the machine room is met.
Description
Technical Field
The invention relates to the technical field of heating ventilation, in particular to an intelligent temperature control system and method for an elevator machine room.
Background
The existing elevator has a machine room, and a host machine, a control screen and the like are placed in the machine room. The elevator belongs to special equipment, corresponding safety measures must be implemented, and safety operation regulations are strictly followed, otherwise, higher danger hidden danger exists. The elevator control cabinet in the elevator machine room can give off heat in the working process, if the temperature of the elevator machine room is too high, the electronic board in the elevator control cabinet can be caused to work abnormally, the electronic board can be damaged in serious conditions, and the service life of equipment is shortened. Therefore, in order to ensure that the elevator can run safely, the air temperature in the elevator machine room specified in the industry should be kept between +5 ℃ and +40 ℃, and if the temperature of the elevator machine room exceeds 40 ℃, namely the temperature exceeds the design condition that the elevator can run safely, the failure or disorder of an electrical control system can be caused, so that the elevator fault or accident is caused.
In a large number of investigations it has been found that, in addition to mechanical faults in the elevator installation, a high proportion of accidents occur in the elevator main motor and in the control circuit electrical components as a result of damage due to excessively high operating temperatures. At present, in order to avoid the elevator to lead to the occurence of failure because of equipment itself, device operating temperature are too high, can set up exhaust fan or air conditioner in elevator machine room usually and realize the cooling, but present cooling mode has following defect:
1. because the rotating speed of the exhaust fan is fixed, the exhaust fan can not adapt to the large change of the environment temperature, namely when the outdoor environment temperature in the elevator machine room rises to a large extent, the mechanical exhaust simply by fixing the rotating speed of the exhaust fan can not realize effective cooling at all; moreover, when the indoor temperature is relatively low, the exhaust fan operates at the same rotational speed, which wastes electric power. In addition, if the installation power of the exhaust fan is low, the cooling requirement under the high-temperature environment may not be met; it would not be economical to purchase a powerful exhaust fan.
2. Because the time of opening and closing the air conditioner is manually controlled and cannot be self-adapted to the temperature change of the machine room, in order to ensure that the indoor temperature is proper, people need to determine whether the air conditioner is opened or not according to the temperature change at any time, otherwise, once the opening time is missed, the temperature of the machine room is overhigh, so that the main motor of the elevator, the electric components of a control loop and the like are damaged or invalid due to overhigh temperature, and further safety accidents are caused; similarly, once the air conditioner is turned on, the air conditioner is always in the on state under the condition of no interference of external factors, but the outdoor temperature changes along with the change of seasons and weather, so that the air conditioner is in the running state when the temperature of the indoor space does not need to be reduced, energy waste is caused, and the purpose of energy conservation cannot be realized.
3. After the air conditioner is turned on, a fixed operating temperature is usually set. However, if the temperature is set too low, most of the time may be in a state of wasted power consumption; if the temperature setting is too high, the equipment operating temperature requirements may not be met. In addition, due to seasonal climate change and daytime temperature difference fluctuation, the external environment temperature changes very often, and the current air conditioner cannot intelligently recognize the external environment temperature and automatically adjust the operation power. Therefore, no matter people are subjectively conscious or objectively influenced by the environment, the existing indoor cooling technology of the elevator room cannot meet the requirements of economy, energy conservation and appropriate indoor temperature at the same time.
4. Because no person monitors the exhaust fan or the air conditioner running state in real time in the machine room, when the air conditioner or the exhaust fan breaks down, the air conditioner or the exhaust fan cannot be fed back to a supervision department or personnel in time, and therefore secondary faults or accidents are further caused due to overhigh temperature of the machine room.
In view of the above, there is an urgent need for an energy-saving and economical method and system for ventilating and cooling a self-adaptive machine room with a suitable indoor temperature.
Disclosure of Invention
Aiming at the technical problems, the invention provides an intelligent temperature control system and method for an elevator machine room
In order to solve the technical problems, the invention adopts the technical scheme that:
an intelligent temperature control system for an elevator machine room, which comprises a controller, a louver arranged at the bottom of any wall in the elevator machine room, a main exhaust fan arranged at the top of the diagonal wall surface of the louver, an air conditioner, a louver motor used for adjusting the opening angle of the louver, a louver motor control switch, a main exhaust fan motor used for adjusting the rotating speed gear of the main exhaust fan, a main exhaust fan motor control switch, an air conditioner control switch, an indoor temperature sensor used for detecting the indoor temperature in the elevator machine room and an outdoor temperature sensor used for detecting the outdoor temperature of the elevator machine room, wherein,
the indoor temperature sensor and the outdoor temperature sensor are connected with the controller, the controller is respectively connected with the shutter motor control switch, the main exhaust fan motor control switch and the air conditioner control switch, the shutter motor control switch is connected with the shutter motor, the shutter motor is connected with the shutter, the main exhaust fan motor control switch is connected with the main exhaust fan motor, the main exhaust fan motor is connected with the main exhaust fan, and the air conditioner control switch is connected with the air conditioner;
the indoor temperature sensor and the outdoor temperature sensor respectively send the detected indoor temperature value and the detected outdoor temperature value to the controller, and the controller receives and processes the indoor temperature value and the outdoor temperature value and respectively sends corresponding control signals to the shutter motor control switch, the main row fan motor control switch and the air conditioner control switch so as to control the forward and reverse rotation of the shutter motor), the rotation speed gear switching of the main row fan motor and the starting/stopping of the air conditioner.
Further, the indoor temperature sensor is installed close to elevator control equipment, and/or the outdoor temperature sensor is installed on the outer wall of the elevator machine room and located at the air inlet position of the shutter.
Furthermore, the intelligent temperature control system for the elevator machine room further comprises a photovoltaic module which is installed on the roof of the elevator machine room and used for supplying power to the main exhaust fan, and the photovoltaic module is connected with the main exhaust fan motor control switch.
Furthermore, the intelligent temperature control system of the elevator machine room also comprises a current sensor used for detecting the working current of the main row fan motor, the current sensor is connected in series with a power line between the main row fan motor and the main row fan motor control switch and is fixedly installed, wherein,
the current sensor sends the detected working current value to the controller, the controller receives the working current value and synthesizes the indoor temperature value and the outdoor temperature value to respectively send corresponding control signals to the shutter motor control switch, the main exhaust fan motor control switch and the air conditioner control switch so as to control the positive and negative rotation of the shutter motor), the rotation speed gear switching and the start/stop of the main exhaust fan motor and the start/stop of the air conditioner.
Furthermore, the intelligent temperature control system for the elevator machine room further comprises a standby exhaust fan arranged beside the main exhaust fan in parallel, a standby exhaust fan motor used for adjusting the rotating speed of the standby exhaust fan, and a standby exhaust fan motor control switch, wherein the standby exhaust fan motor control switch is respectively connected with the standby exhaust fan motor and the controller;
the controller comprehensively processes the indoor temperature value, the outdoor temperature value and the working current value and sends out corresponding control signals to control the switching of the main exhaust fan and the standby exhaust fan.
Furthermore, the standby exhaust fan motor control switch is externally connected with a mains grid.
Furthermore, a filter screen or a mesh-shaped protective cover is arranged at an air inlet of the louver on the outer wall of the elevator machine room; and/or a filter screen or a mesh-shaped protective cover is arranged at the air outlet of the main exhaust fan on the outer wall of the elevator machine room.
Furthermore, a filter screen or a mesh-shaped protective cover is installed at the air outlet of the standby exhaust fan on the outer wall of the elevator machine room.
Furthermore, the intelligent temperature control system for the elevator machine room further comprises an alarm receiving device used for receiving an alarm signal, and the alarm receiving device is connected with the controller.
Based on the intelligent control system for the temperature of the elevator machine room, the invention provides an intelligent control method for the temperature of the elevator machine room, and in an initial state, a main row fan motor control switch in the intelligent control system for the temperature of the elevator machine room is switched off, the main row fan motor is in a low gear, an air conditioner control switch is switched off, a shutter motor control switch is switched off, and the opening angle of a shutter is 0 degrees, so that the intelligent control method for the temperature of the elevator machine room comprises the following steps:
s52, detecting the indoor temperature of the elevator machine room in real time/according to a preset detection period, and executing the step S53;
s53, judging whether the indoor temperature is larger than 22 ℃, if so, executing a step S54, otherwise, executing a step S52;
s54, judging whether the indoor temperature is higher than 28 ℃, if so, executing a step S56, otherwise, executing a step S55;
s55, the controller controls the main exhaust fan motor control switch to close and controls the main exhaust fan to run at a low gear, and at the same time, controls the shutter motor control switch to close and controls the shutter motor to open the shutter 45 °, executing step S52;
s56, judging whether the indoor temperature is higher than 34 ℃, if so, executing the step S58, otherwise, executing the step S57;
s57, the controller controls the main exhaust fan motor control switch to close and controls the main exhaust fan motor to switch to the middle gear, so that the main exhaust fan runs at the middle gear, and at the same time, controls the shutter motor control switch to close and controls the shutter motor to open the shutter of the shutter by 45 °, and goes to step S52;
s58, judging whether the indoor temperature is more than 40 ℃, if so, executing the step S510, otherwise, executing the step S59;
s59, the controller controlling the main exhaust fan motor control switch to be turned off to stop the main exhaust fan, and simultaneously controlling the shutter motor control switch to be turned on to control the shutter motor to adjust the opening angle of the shutter to 0 °, and controlling the air conditioner control switch to be turned on to operate the air conditioner at a constant temperature of 28 ℃, and performing step S511;
and S510, the controller controls the shutter motor control switch to be closed, controls the shutter motor to open the shutter to 90 degrees, simultaneously controls the main exhaust fan motor control switch to be closed, controls the main exhaust fan motor to switch the main exhaust fan to a high-speed gear, reports an alarm signal, and executes the step S52.
S511, detecting the outdoor temperature of the elevator machine room, and executing the step S512;
s512, judging whether the outdoor temperature is detected to be higher than 34 ℃, and executing a step S513; otherwise, step S52 is executed.
S513, detecting the indoor temperature in real time, and executing the step S514;
s514, determining whether the detected indoor temperature is greater than 40 ℃, if so, performing step S510, otherwise, performing step S59.
Further, after the controller controls the main exhaust fan to operate at a low gear/a medium gear/a high gear in the step S55/the step S57/the step S510, the intelligent control method for the temperature of the elevator machine room further includes the steps of:
s61, detecting the working current value of the main exhaust fan, and executing the step S62;
s62, judging whether the working current value of the main exhaust fan is smaller than the rated current when the main exhaust fan runs at a low gear, if so, executing a step S63; otherwise, go to step S64;
s63, the controller sends out the main exhaust fan motor control switch off signal after processing the signal to stop the main exhaust fan, and sends out the standby exhaust fan motor control switch on signal to make the standby exhaust fan run at low/middle/high gear, executing step S52;
and S64, the controller controls the spare exhaust fan motor control switch to be switched off so as to stop the spare exhaust fan, and the step S52 is executed.
The invention has the beneficial effects that:
the intelligent control system and the intelligent control method for the temperature of the elevator machine room sense the indoor temperature and the outdoor temperature through the indoor temperature sensor and the outdoor temperature sensor, and control the running states of corresponding aeration and cooling equipment, namely an air conditioner, a shutter and an exhaust fan according to the changes of the indoor temperature and the outdoor temperature, thereby providing different aeration and cooling measures when the indoor temperature changes in different temperature intervals, and further having the following advantages:
1) the intelligent temperature control system for the elevator machine room, disclosed by the invention, is used for cooling the interior of the elevator machine room by combining the exhaust fan and the air conditioner, so that equipment or device faults caused by overhigh temperature in the elevator machine room are effectively avoided, and further, accidental casualties caused by falling of people on the elevator can be prevented.
2) The intelligent temperature control method for the elevator machine room flexibly and automatically controls the opening and closing of the shutter, the exhaust fan and the air conditioner according to the indoor and outdoor temperature change, adjusts the running states and relations of the shutter, the exhaust fan and the air conditioner, and achieves the aim of saving energy while meeting the temperature requirement in the machine room.
3) According to the invention, in the normal condition, the whole cooling regulation process or the shutdown and startup process is completely finished by automatic detection of the sensor, automatic control of the controller and automatic execution of the execution equipment, so that the indoor temperature control of the elevator machine room is finished without human intervention, the management time of managers is saved, and the labor intensity of workers is reduced.
4) According to the invention, when the indoor temperature exceeds the working temperature of the equipment due to the temperature reduction failure of the air conditioner, the air inlet shutter is completely opened, and the indoor temperature is limited to continuously rise as much as possible by combining with the operation of the exhaust fan at the maximum wind speed level; meanwhile, the fault signal is sent to a fire control room or a guard room, so that time is gained for managers to stop the elevator and maintain the cooling system in time.
5) According to the invention, a stage cooling scheme is set according to the operating requirements of the environment temperature and the equipment temperature, the exhaust fan is used for ventilating and cooling the room most of the time, and the photovoltaic module is used for supplying power to the exhaust fan under the normal condition, so that a large amount of electric energy is saved.
6) The exhaust fans are arranged in two groups, one is used and the other is standby, the photovoltaic module is commonly used for supplying power, the building power distribution system is used for supplying power for standby, and the power and the function of the standby exhaust fan are the same as those of the commonly used exhaust fan; the technical scheme can effectively ensure the indoor ventilation and cooling functions of the common exhaust fan and related components thereof after the faults, and can also achieve the energy-saving requirement.
7) Because the elevator is a necessary device for modern buildings, the elevator is responsible for the life safety of personnel, and the aim of economy and energy conservation can be achieved from multiple angles while the safety of the personnel is ensured; in addition, the intelligent building intelligent control system is high in intelligent degree and accords with the current development trend of intelligent buildings. Therefore, the invention has strong practical significance and wide popularization and application values.
Drawings
Fig. 1 is a functional block diagram of a first embodiment of an intelligent temperature control system of an elevator machine room according to the present invention;
fig. 2 is a functional block diagram of a second embodiment of the intelligent temperature control system of an elevator machine room of the present invention;
fig. 3 is a flowchart of a first embodiment of an intelligent temperature control method for an elevator machine room according to the present invention;
fig. 4 is a flowchart of a second embodiment of the intelligent control method for the temperature of the elevator machine room of the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example one
Referring to fig. 1, it is a functional block diagram of an embodiment of an intelligent temperature control system of an elevator machine room of the present invention, specifically, the intelligent temperature control system of the elevator machine room in this embodiment includes:
a controller 1, a louver 2 with adjustable opening angle, a main exhaust fan 3, an air conditioner 4, a louver motor 21 for adjusting the opening angle of the louver 2, a normally open louver motor control switch 22, a main exhaust fan motor 31 for adjusting the gear of the rotation speed of the main exhaust fan 3, a normally closed main exhaust fan motor control switch 32, a normally open air conditioner control switch 41, an indoor temperature sensor 5 for detecting the indoor temperature in the elevator machine room and an outdoor temperature sensor 6 for detecting the outdoor temperature outside the elevator machine room, wherein the louver 2 is installed at the bottom of any wall in the elevator machine room, correspondingly, the main exhaust fan 3 is installed at the top of the diagonal wall of the louver 2, and the indoor temperature sensor 5 is installed at a place near the elevator control equipment (such as motor and other equipment) in the elevator machine room and is connected with the controller 1, the outdoor temperature sensor 6 is installed on the outer wall of the elevator machine room and is positioned at the air inlet position of the shutter 2.
In this embodiment, the controller 1 is connected to the shutter motor control switch 22, the shutter motor control switch 22 is connected to the shutter motor 21, and the shutter motor control switch 22 is connected to the shutter 2 and externally connected to a commercial power network. In a specific embodiment, referring to fig. 1, the shutter motor control switch 22 may employ a relay, specifically, the shutter motor control switch 22 includes a shutter main circuit switch 221 and a shutter control circuit switch 222, the shutter main circuit switch 221 is connected to the shutter motor 21 and is externally connected to a mains supply network, the shutter control circuit switch 222 controls the opening and closing of the shutter main circuit switch 221 according to a control signal sent by the controller 1, so as to supply/cut off power to/from the shutter motor 21, and when the shutter main circuit switch 221 is in a closed state, a corresponding control signal sent by the controller 1 is sent to the shutter motor 21 to control the forward and reverse rotation of the shutter motor 21, specifically, the shutter motor 21 is a shutter motor 21 having a commutator 211, so that, when the commutator 211 of the shutter motor 21 receives the corresponding control signal, the inverter 211 controls the forward and reverse rotation of the blind motor 21 to achieve the adjustment of the opening angle of the blind 2, see fig. 1. In this embodiment, the opening angle of the louver 2 is the angle between the vertical lines of the indoor floor of the louver 20, when the louver 20 is fully opened, the angle between the louver 20 and the vertical line of the indoor floor is 0 °, and when the standby louver 20 is fully closed, the angle between the louver 20 and the vertical line of the indoor floor is 90 °.
In this embodiment, the controller 1 is further connected to the air-conditioning control switch 41, the air-conditioning control switch 41 is connected to the air conditioner 4, and the air-conditioning control switch 41 is externally connected to a commercial power network; in a specific embodiment, referring to fig. 1, the air conditioner control switch 41 employs a relay, specifically, the air conditioner control switch 41 includes an air conditioner main circuit switch 411 and an air conditioner control circuit switch 412, the air conditioner main circuit switch 411 is connected to the air conditioner 4 and is externally connected to a mains supply network, and the air conditioner control circuit switch 412 controls the opening and closing of the air conditioner main circuit switch 411 according to a control signal sent by the controller 1, so as to supply/cut off power to the air conditioner 4, and when the air conditioner main circuit switch 411 is in a closed state, the air conditioner 4 is powered on to start to operate, and the operating state is at a constant temperature of 28 ℃ which is initially set, of course, the corresponding control signal sent by the controller 1 can also be sent to the air conditioner 4 to adjust the air conditioner 4 to operate at a corresponding temperature value, for example, at a constant temperature of 26 ℃, see fig. 1.
In this embodiment, the controller 1 is further connected to the main exhaust fan motor control switch 32, and the main exhaust fan motor control switch 32 is connected to the main exhaust fan motor 31; in a specific embodiment, the main exhaust fan motor control switch 32 is a relay, specifically, the main exhaust fan motor control switch 32 includes a main exhaust fan motor main circuit switch 321 and a main exhaust fan motor control circuit switch 322, the main exhaust fan motor main circuit switch 321 is further connected to the main exhaust fan motor 31 and the photovoltaic module 9, respectively, and the main exhaust fan motor control circuit switch 322 controls the opening and closing of the main exhaust fan motor main circuit switch 321 according to a control signal sent by the controller 1, that is, the main exhaust fan motor control circuit switch 322 controls the opening and closing of the main exhaust fan motor main circuit switch 321 according to a control signal sent by the controller 1, so as to supply/cut off power to the main exhaust fan motor 31, and when the main exhaust fan motor main circuit switch 321 is in a closed state, the corresponding control signal sent by the controller 1 is sent to the main exhaust fan motor 31, and the speed controller 311 of the main exhaust fan motor 31 adjusts the speed gear of the main exhaust fan 3 according to the control signal, see fig. 1.
As can be seen from the above description, in the present embodiment, the controller 1 performs analysis processing on the indoor temperature and the outdoor temperature detected by the indoor temperature sensor 5 and the outdoor temperature sensor 6, and sends corresponding control signals to the louver motor control switch 22, the main exhaust fan motor control switch 32, and the air conditioner control switch 41 to control the forward and reverse rotation of the louver motor 21, the switching of the rotation speed gear of the main exhaust fan motor 31, and the start/stop of the air conditioner 4.
In this embodiment, in the initial state, the louver motor control switch 22 in the ventilation cooling system is in the off state, that is, the louver motor main circuit switch 221 is turned off, so that the louver motor 21 is in the off state in the initial state, but the opening angle of the louver 2 is 0 °, that is, the included angle between the louver 20 and the vertical line of the indoor ground is 0 °; the main exhaust fan motor control switch 32 is turned off, that is, the main exhaust fan motor main circuit switch 321 is turned off, so that the main exhaust fan motor 31 is in the power-off state in the initial state, and the initial gear of the main exhaust fan 3 is in the low gear; since the air conditioner control switch 41 is turned off, that is, the air conditioner main circuit switch 411 is turned off, the air conditioner 4 is turned off in the initial state, that is, the air conditioner 4 is turned off in the initial state, but the operation temperature initially set is constant 28 ℃.
In a specific embodiment, the main exhaust fan 3 has at least three gears, and a screen or mesh-shaped shield is disposed outside the machine room at a position corresponding to the main exhaust fan 3 and the louver 2.
Further, referring to fig. 1, the intelligent temperature control system for an elevator machine room in this embodiment further includes an alarm receiving device 10 connected to the controller 1, such as an upper computer installed in a fire control room or a security guard room, so that once the controller 1 comprehensively processes the indoor temperature and the outdoor temperature, and finds an emergency, for example, when the indoor temperature is higher than 40 degrees, the alarm receiving device 10 can timely receive an alarm signal reported by the controller, thereby gaining time for managers to timely stop the elevator and maintain the cooling system.
Example two
In order to effectively ensure that the indoor temperature can be intelligently controlled even after the common exhaust fan (namely, the main exhaust fan 3) and related components thereof have faults, and meanwhile, the requirement of energy saving can be met, the invention also provides an intelligent control system for the temperature of the elevator machine room, and particularly, referring to fig. 2, the intelligent control system for the temperature of the elevator machine room comprises components in the first embodiment, a current sensor 7 for detecting the working current value of the main exhaust fan 3, a standby exhaust fan 8 arranged beside the main exhaust fan 3 in parallel, a standby exhaust fan motor 81 for adjusting the rotating speed of the standby exhaust fan 8, and a standby exhaust fan motor control switch 82, wherein the standby exhaust fan motor control switch 82 is respectively connected with the controller 1 and the standby exhaust fan motor 81, and the standby exhaust fan motor 81 is connected with the standby exhaust fan 8.
In this embodiment, the backup exhaust fan 8 and the main exhaust fan 3 are of the same type and model, and the backup exhaust fan 8 is powered by the utility power network, i.e. the backup exhaust fan motor control switch 82 is externally connected to the utility power network. In one embodiment, the standby fan motor control switch 82 includes a standby fan motor main circuit switch 821 and a standby fan motor control circuit switch 822, wherein the standby fan motor main circuit switch 821 is respectively connected to the standby fan motor 81 and the utility power network, the standby fan motor 822 controls the opening and closing of the standby fan motor main circuit switch 821 according to the control signal sent by the controller 1, so as to supply/cut off power to/from the standby fan motor 81, and when the standby fan motor main circuit switch 821 is in a closed state, the corresponding control signal sent by the controller 1 is sent to the standby fan motor 81, and the speed adjusting controller 811 on the standby fan motor 1 adjusts the rotation speed gear of the standby fan 8 according to the control signal, as shown in fig. 2.
In this embodiment, the current sensor 7 is connected in series between the main exhaust fan motor 31 and the main exhaust fan motor control switch 32 (specifically, connected in series on a power line between the main exhaust fan motor 31 and the main circuit switch of the main exhaust fan motor, and fixedly installed), and the current sensor 7 sends the detected working current value to the controller 1, and the controller 1 receives the working current value, and performs comprehensive analysis and processing by combining the indoor temperature value and the outdoor temperature value, and then analyzes and sends corresponding control signals to the louver motor control switch 22, the main exhaust fan motor control switch 32, and the air conditioner control switch 41 to control the forward and reverse rotation of the louver motor 21, the switching between the main exhaust fan 3 and the standby exhaust fan 8, the adjustment of the rotation speed gear of the standby exhaust fan 8, and the start/stop of the air conditioner 4.
In this embodiment, in the initial state of the aeration cooling system, the control switch of the standby fan motor is in the off state, that is, the main circuit switch 821 of the standby fan motor is in the off state, so that the standby fan motor 81 is in the power-off state, and the initial setting gear of the standby fan 8 is in the low gear.
In this embodiment, an interlock control mode may be adopted between the standby exhaust fan and the main exhaust fan, that is, once the main exhaust fan motor control switch is turned on, the standby exhaust fan motor control switch is turned off automatically, and once the main exhaust fan motor control switch is turned off, the standby exhaust fan motor control switch is turned on automatically.
In this embodiment, the standby exhaust fan motor control switch is also implemented by using a relay, that is, a main loop of the relay is externally connected to a mains supply network.
Further, in this embodiment, a filter or a mesh-shaped protective cover may be disposed outside the machine room at a position corresponding to the spare exhaust fan 8.
EXAMPLE III
Based on the elevator machine room temperature intelligent control system in the first embodiment, the invention also provides an elevator machine room temperature intelligent control method, which is described in detail below by combining the specific embodiment and the attached drawings.
Referring to fig. 3, which is a flowchart of an embodiment of an intelligent control method for temperature of an elevator machine room of the present invention, specifically, the intelligent control method for temperature of an elevator machine room of the present embodiment includes the steps of:
and S51, initializing the intelligent control system of the temperature of the elevator machine room, and executing the step S52.
In this embodiment, the initialization of the intelligent temperature control system of the elevator machine room means that the intelligent temperature control system of the elevator machine room is installed and debugged when the indoor temperature is lower than 22 ℃, and after the debugging is completed, that is, when the intelligent temperature control system of the elevator machine room is in an initial state, the control switch 32 of the main exhaust fan motor in the intelligent temperature control system of the elevator machine room is turned off, the main exhaust fan motor 31 is in a low gear, the air conditioner control switch 41 is turned off, the control switch 22 of the louver motor is turned off, and the opening angle of the louver 2 is 0 °.
And S52, detecting the indoor temperature of the elevator machine room in real time and executing the step S53.
In this embodiment, the indoor temperature of the elevator machine room is detected by the indoor temperature sensor and sent to the controller 1.
In this embodiment, the indoor temperature in the elevator machine room is detected by adopting a real-time detection mode, and a detection period can be preset, for example, the detection is performed once every 5 minutes or once every 30 minutes, and the actual detection period can be set according to actual conditions.
S53, judging whether the detected indoor temperature is larger than 22 ℃, if so, executing step S54, otherwise, executing step S52.
In this embodiment, if it is detected that the indoor temperature is less than or equal to 22 ℃, it is indicated that the indoor temperature is low, and it is not necessary to perform ventilation and cooling by means of an air conditioner or an exhaust fan, and it is only necessary to perform natural ventilation by using an elevator shaft or the like, and therefore, when it is detected that the indoor temperature is less than or equal to 22 ℃, it is only necessary to continue to detect the indoor temperature in real time, that is, the process of this embodiment is executed from the step S52 again.
S54, judging whether the indoor temperature is higher than 28 ℃, if so, executing step S56, otherwise, executing step S55.
S55, the controller 1 controls the main exhaust fan motor control switch 32 to be closed and controls the main exhaust fan 3 to be operated at a low gear, and at the same time, controls the blind motor control switch 22 to be closed and controls the blind motor 21 to open the blind 2 by 45 °, and then performs step S52.
In this embodiment, when the temperature is determined to be higher than 22 ℃, the controller 1 sends a closing signal to the main exhaust fan motor control switch 32, and after the main exhaust fan motor control switch 32 receives the closing signal, the main exhaust fan motor main loop switch 321 is closed, so that the main exhaust fan 3 is powered on, and meanwhile, since the main exhaust fan 3 is set at a low gear in the initial state, once the main exhaust fan 3 is powered on, the main exhaust fan 3 will operate at the low gear.
In this embodiment, the controller also sends out a closing signal of the shutter motor control switch 22, and after the shutter motor control switch 22 receives the signal, the shutter motor main circuit switch 221 is closed, so that the shutter motor 21 is powered on, and at the same time, sends out a control signal for opening the shutter 2 by 45 ° to the shutter motor 21, so that the shutter motor 21 opens the shutter by 45 ° (see an arrow in fig. 1 or fig. 2).
S56, judging whether the indoor temperature is larger than 34 ℃, if so, executing step S58, otherwise, executing step S57.
S57, the controller 1 controls the main exhaust fan motor control switch 32 to be closed and controls the main exhaust fan motor 31 to be switched to the middle gear so that the main exhaust fan 3 is operated at the middle gear, and at the same time, controls the louver motor control switch 22 to be closed and controls the louver motor 21 to open the louver 2 by 45 °, and then step S52 is performed.
In this embodiment, if it is detected that the indoor temperature is greater than 22 ℃, the controller 1 sends a closing signal to the main exhaust fan motor control switch 32, so that the main exhaust fan 3 is powered on, and since the initial state of the main exhaust fan 3 is set at a low gear, after the power is powered on, the controller also sends a gear switching signal to the main exhaust fan motor 321 to control the main exhaust fan 3 to operate at a medium gear; meanwhile, a closing signal of the blind motor control switch 22 is sent to the blind motor control switch 2, and a control signal of the opening angle adjustment is sent to the blind motor 21 to control the blind motor 21 to open the blind 2 by 45 °.
Of course, in this embodiment, if the main exhaust fan motor control switch 32 is closed, the main exhaust fan motor control switch 22 does not perform any operation, and only the main exhaust fan motor 21 needs to be controlled to switch to the middle gear according to the control signal for gear switching sent by the controller, for example, because the temperature is greater than 22 ℃, the main exhaust fan motor control switch 32 is already closed and operates in the low gear, and therefore, when the indoor temperature detected again is greater than 28 ℃, it is indicated that the indoor temperature is not decreased, but rather is increased, and the ventilation and cooling measures are switched: the ventilation and cooling are performed by adopting a mode of matching the middle gear with the shutter 2, that is, the main exhaust fan motor 31 is controlled according to a control signal sent by the controller 1 for switching to the middle gear, so that the main exhaust fan 3 runs at the middle gear.
S58, judging whether the indoor temperature is more than 40 ℃, if yes, executing the step S510, otherwise, executing the step S59.
S59, the controller 1 controls the main exhaust fan motor control switch 32 to be turned off so that the main exhaust fan 3 is stopped, and at the same time, controls the louver motor control switch 22 to be turned on, controls the louver motor 21 to adjust the opening angle of the louver 2 to 0 °, and controls the air conditioner control switch 41 to be turned on so that the air conditioner 4 is operated at a constant temperature of 28 ℃, and performs step S511.
In this embodiment, since the main exhaust fan motor control switch 32 is controlled to be closed when the temperature is higher than 22 ℃, and the main exhaust fan 3 is controlled to operate at the low gear, and when the indoor temperature is detected to be higher than 28 ℃ again, the main exhaust fan 3 is switched to operate at the medium gear, when the indoor temperature is detected to be higher than 34 ℃ again, it is indicated that the ventilation and cooling measures need to be further switched: the air conditioner 4 is adopted for ventilation and cooling, namely, the controller 1 sends out a switch-off signal of the main exhaust fan motor control switch 32, so that the main exhaust fan 3 is powered off; meanwhile, the shutter motor control switch 22 is in a closed state, so that the shutter motor control switch 22 only needs to control the shutter motor 21 to adjust the opening angle of the shutter 2 to 0 degree according to an angle adjustment signal sent by the controller 1; and issuing an air conditioner control switch 41 closing signal so that the air conditioner is powered on, and since the set initial temperature of the air conditioner is a constant temperature of 28 ℃, the air conditioner 4 will operate at 28 ℃ once powered on.
Of course, in this embodiment, if the main exhaust fan motor control switch 32 is in the off state, no operation will be performed after receiving the off signal; if the shutter motor control switch 22 is turned off, the shutter motor control switch 22 needs to be controlled to be turned on first, and then the shutter opening angle of the shutter is adjusted to 0 degree; of course, if the louver opening angle of the louver itself is 0 °, the louver motor will not perform any operation.
S510, the controller 1 controls the louver motor 21 to open the louver 2 to 90 °, and at the same time, controls the main exhaust fan motor 31 to switch the main exhaust fan 3 to the high-speed gear, and reports an alarm signal, and then executes step S52.
In this embodiment, the air conditioner 4 is adopted to cool in step S510, and when it is detected that the indoor temperature is greater than 40 ℃ again, it may be that the air conditioner fails or the power of the air conditioner is insufficient, and therefore, cooling cannot be achieved even if the air conditioner is turned on, and therefore, an alarm signal needs to be reported to the fire control room 10, and ventilation and cooling measures need to be replaced again.
Because the air conditioner can not be used any more, in the embodiment, the ventilation and cooling are realized by adopting the mode of matching the shutter and the exhaust fan again, namely, the controller 1 firstly sends out a disconnection signal of the air conditioner control switch 41 to disconnect the power supply of the air conditioner, so that the air conditioner stops running; then, a main exhaust fan motor control switch 32 closing signal is sent out to enable the main exhaust fan 3 to be powered on, and a main exhaust fan motor 31 rotating speed adjusting signal is sent out to enable the main exhaust fan 3 to run at a high speed; at the same time, an opening angle adjustment signal is sent to the blind motor 21 so that the blind motor 21 adjusts the opening angle of the blind 2 to 90 °, that is, fully opens the blind.
S511 detects the outdoor temperature of the elevator machine room, and executes step S512.
In this embodiment, the outdoor temperature may be detected in real time, or a preset detection period, such as once every 30 minutes or once every 10 minutes, and the actual detection period may be set according to the local specific climate condition.
S512, judging whether the detected outdoor temperature is higher than 34 ℃, if so, executing a step S513; otherwise, step S52 is executed.
In step S513, the indoor temperature is detected in real time, and step S514 is executed.
In this embodiment, the indoor temperature may be detected in real time, or a preset detection period, such as once detection in 5 minutes or once detection in 10 minutes, and the actual detection period may be set in combination with the outdoor temperature and the indoor actual condition.
S514, determining whether the detected indoor temperature is greater than 40 ℃, if so, performing step S510, otherwise, performing step S59.
In this embodiment, after the air conditioner 4 is turned on, if the detected outdoor temperature is less than or equal to 34 ℃, it is determined that the outdoor temperature is lower than the indoor temperature, and therefore, the indoor temperature is not increased by the influence of the outdoor temperature, in this case, the temperature can be decreased only by the air conditioner 4, and therefore, the current control state (i.e., the air conditioner is operated at the constant temperature of 28 ℃) is maintained. However, if the outdoor temperature is higher than 34 ℃, that is, the outdoor temperature is higher, and the indoor temperature is also higher than 34 ℃ at this time, the indoor temperature may be increased by the influence of the outdoor temperature, in this case, the indoor temperature needs to be detected in real time, and when the indoor temperature is detected to be higher than 40 ℃, it is indicated that the cooling by the air conditioner cannot be achieved, which may be because the air conditioner is damaged or the power of the air conditioner is insufficient, and therefore, it is necessary to report an alarm signal to the alarm receiving device 10 such as an upper computer in a fire control room or a security guard, and control to turn off the air conditioner 4, completely turn on the louver 2, and control the main exhaust fan 3 to operate at a high speed gear, so as to maintain the maximum ventilation, and gain time for a manager or a maintenance worker to perform maintenance.
Example four
Based on the elevator machine room temperature intelligent control system in the second embodiment, the invention further provides another elevator machine room temperature intelligent control method, that is, whether the main exhaust fan fails or not is judged by detecting the working current of the main exhaust fan 3, if the main exhaust fan fails, the main exhaust fan is not adopted for ventilation and cooling, but the standby exhaust fan is adopted for ventilation and cooling, and the following description is provided by combining a specific embodiment and an attached drawing.
Referring to fig. 4, which is a flowchart of a second embodiment of the intelligent control method for the temperature of the elevator machine room according to the present invention, specifically, the intelligent control method for the temperature of the elevator machine room of the present embodiment includes the steps of the first embodiment, except that in the present embodiment, after the controller 1 controls the main exhaust fan 3 to operate at the low gear/the medium gear/the high gear in step S55/step S57/step S510, the method further includes the steps of:
s61, the operating current value of the main exhaust fan 3 is detected, and step S62 is executed.
In this embodiment, the working current of the main exhaust fan may be detected in real time, or a preset detection period, such as once detection for 5 minutes or once detection for 30 minutes, may be adopted, and the actual detection period may be set according to an actual situation.
S62, judging whether the working current value of the main exhaust fan 3 is smaller than the rated current when the main exhaust fan 3 runs at the low gear, if yes, executing the step S63; otherwise, step S64 is executed.
In this embodiment, if it is detected that the operating current value of the main exhaust fan 3 is greater than or equal to the rated current when the main exhaust fan is operating in the low gear, it indicates that the main exhaust fan 3 is operating normally or the photovoltaic module 9 is not supplying enough power, so the controller 1 maintains the low gear operation of the main exhaust fan 3 in step S55/the medium gear operation of the main exhaust fan 3 in step S56/the high gear operation of the main exhaust fan 3 in step S510.
Further, since the operating current of the main exhaust fan may fluctuate within a small range, that is, when the main exhaust fan operates normally, the detected operating current value may be slightly smaller than the rated current, in order to prevent misoperation, in a specific implementation process, an error value may be set, that is, when the detected operating current value is determined to be smaller than the rated current, a difference value between the operating current value and the rated current is compared with the error value, if the difference value is smaller than or equal to the error value, it is determined that the main exhaust fan operates normally, otherwise, it is determined that the main exhaust fan may malfunction, and step S62 is executed; of course, the sum of the detected rated current and the error value may be directly compared with the detected operating current value, if the operating current value is less than or equal to the sum of the rated current and the error value, it indicates that the main exhaust fan is operating normally, otherwise, it indicates that the main exhaust fan may be out of order, and step S62 is executed. Of course, the error value may be set according to the actual application environment and the type and specific model of the main exhaust fan.
S63, the controller 1 controls the main exhaust fan motor control switch 32 to be turned off and stops the main exhaust fan 3, and controls the standby exhaust fan motor control switch 82 to be turned on and operated at the low/middle/high gear, and performs the step S52.
In this embodiment, when the controller 1 determines that the detected working current value detected by the current sensor is smaller than the rated current when the main exhaust fan motor operates at the low-speed gear, it indicates that the main exhaust fan may have a fault, and therefore, the controller sends a main exhaust fan motor control switch 32 off signal to turn off the main exhaust fan motor, so that the main exhaust fan 3 is stopped; at the same time, a closing signal of the standby fan motor control switch 82 is issued to operate the standby fan 8 at the low/medium/high speeds (specifically, the standby fan 8 is operated at the low speed in step S55; the standby fan is operated at the medium speed in step S57; the standby fan is operated at the high speed in step S510).
Of course, in this embodiment, the controller may also detect the working current value of the main exhaust fan 3 after controlling the main exhaust fan control switch 32 to be closed, determine whether the working current value of the main exhaust fan 3 is smaller than the rated current when the main exhaust fan 3 operates at the low gear, and control the main exhaust fan 3 to operate when determining that the working current value is larger than the rated current; of course, if the operating current value is smaller than the rated current, step S63 is executed.
S64, the controller 1 controls the standby fan motor control switch 82 to be turned off, and stops the standby fan 8, and performs step S52.
In this embodiment, in the working process of the standby exhaust fan, if the main exhaust fan is repaired or the sun is finally generated after continuous cloudy days, and the sunlight is abundant, so that the power supply of the photovoltaic module is very sufficient, it is detected that the working current of the main exhaust fan 3 is greater than the rated value, therefore, in order to save energy, in this embodiment, the standby exhaust fan is turned off, and the main exhaust fan is turned on again, specifically, in the working engineering of the standby exhaust fan 8, when it is detected that the working current of the main exhaust fan is greater than the rated value, the controller controls the control switch of the motor of the standby exhaust fan to be turned off, so that the standby exhaust fan works.
Of course, in this embodiment, if the standby fan motor control switch itself is off, the standby fan motor control switch will not perform any operation.
Further, in this embodiment, in step S64, the control switch of the main exhaust fan motor may be controlled to be turned on while the standby exhaust fan is turned off, so as to realize ventilation and cooling by switching the standby exhaust fan to the main exhaust fan.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. An intelligent control method for the temperature of an elevator machine room is based on an intelligent control system for the temperature of the elevator machine room, the intelligent control system for the temperature of the elevator machine room comprises a controller (1), a louver (2) installed at the bottom corner of any wall in the elevator machine room and used for ventilation, a main exhaust fan (3) installed at the top of the diagonal wall surface of the louver (2), an air conditioner (4), a louver motor (21) used for adjusting the opening angle of the louver (2), a louver motor control switch (22), a main exhaust fan motor (31) used for adjusting the rotating speed gear of the main exhaust fan (3), a main exhaust fan motor control switch (32), an air conditioner control switch (41), an indoor temperature sensor (5) and an outdoor temperature sensor (6) which are respectively used for detecting the indoor temperature in the elevator machine room and detecting the outdoor temperature of the elevator machine room, wherein the content of the first and second substances,
the indoor temperature sensor (5) and the outdoor temperature sensor (6) are connected with the controller (1), the controller (1) is further connected with the shutter motor control switch (22), the main exhaust fan motor control switch (32) and the air conditioner control switch (41) respectively, the shutter motor control switch (22) is connected with the shutter motor (21), the shutter motor (21) is connected with the shutter (2), the main exhaust fan motor control switch (32) is connected with the main exhaust fan motor (31), the main exhaust fan motor (31) is connected with the main exhaust fan (3), and the air conditioner control switch (41) is connected with the air conditioner (4);
the indoor temperature sensor (5) and the outdoor temperature sensor (6) respectively send detected indoor temperature values and outdoor temperature values to the controller (1), the controller (1) receives and processes the indoor temperature values and the outdoor temperature values and respectively sends corresponding control signals to the shutter motor control switch (22), the main row fan motor control switch (32) and the air conditioner control switch (41) so as to control the forward and reverse rotation of the shutter motor (21), the rotation speed gear switching of the main row fan motor (31) and the start/stop of the air conditioner (4);
the intelligent control method for the temperature of the elevator machine room is characterized in that in an initial state, the main exhaust fan motor control switch (32) is in a disconnected state, the main exhaust fan motor (31) is in a low gear, the air conditioner control switch (41) is in a disconnected state, the shutter motor control switch (22) is in a disconnected state, and the opening angle of the shutter (2) is 0 degrees, so that the intelligent control method for the temperature of the elevator machine room comprises the following steps:
s52, detecting the indoor temperature of the elevator machine room in real time/according to a preset detection period;
s53, judging whether the indoor temperature is larger than 22 ℃, if so, executing a step S54, otherwise, executing a step S52;
s54, judging whether the indoor temperature is higher than 28 ℃, if so, executing a step S56, otherwise, executing a step S55;
s55, the controller (1) controls the main exhaust fan motor control switch (32) to close and controls the main exhaust fan (3) to run at a low gear, and at the same time, controls the shutter motor control switch (22) to close and controls the shutter motor (21) to open the shutter (2) by 45 degrees, and the step S52 is executed;
s56, judging whether the indoor temperature is higher than 34 ℃, if so, executing the step S58, otherwise, executing the step S57;
s57, the controller (1) controls the main exhaust fan motor control switch to close and controls the main exhaust fan motor (31) to switch to the middle gear, so that the main exhaust fan (3) runs at the middle gear, at the same time, controls the shutter motor control switch (22) to close and controls the shutter motor (21) to open the shutter (20) of the shutter (2) for 45 degrees, and the step goes to S52;
s58, judging whether the indoor temperature is more than 40 ℃, if so, executing the step S510, otherwise, executing the step S59;
s59, the controller (1) controls the main exhaust fan motor control switch (32) to be switched off, so that the main exhaust fan (3) stops running, controls the shutter motor control switch (22) to be switched on, controls the shutter motor (21) to adjust the opening angle of the shutter (2) to 0 degrees, and controls the air conditioner control switch (41) to be switched on, so that the air conditioner (4) runs at the constant temperature of 28 ℃, and the step S511 is executed;
s510, the controller (1) controls the shutter motor control switch (22) to be closed, controls the shutter motor (21) to open the shutter (2) to 90 degrees, controls the main exhaust fan motor control switch (32) to be closed, controls the main exhaust fan motor (31) to switch the main exhaust fan (3) to a high-speed gear, reports an alarm signal, and executes a step S52;
s511, detecting the outdoor temperature of the elevator machine room, and executing the step S512;
s512, judging whether the detected outdoor temperature is higher than 34 ℃, and if so, executing a step S513; otherwise, go to step S52;
s513, detecting the indoor temperature in real time, and executing the step S514;
s514, determining whether the detected indoor temperature is greater than 40 ℃, if so, performing step S510, otherwise, performing step S59.
2. The intelligent control method for the temperature of the elevator machine room according to claim 1, wherein the indoor temperature sensor is installed near an elevator control device; and/or the outdoor temperature sensor (6) is arranged on the outer wall of the elevator machine room and is positioned at the air inlet of the shutter (2).
3. The intelligent temperature control method for the elevator machine room according to claim 1, further comprising a photovoltaic module (9) installed on the roof of the elevator machine room for supplying power to the main exhaust fan (3), wherein the photovoltaic module (9) is connected with the main exhaust fan motor control switch (32).
4. The intelligent temperature control method of an elevator machine room according to claim 1 or 3, further comprising a current sensor (7) for detecting an operating current of the main exhaust fan motor (31), the current sensor (7) being fixedly installed in a power line between the main exhaust fan motor (31) and the main exhaust fan motor control switch (32) in series, wherein,
the current sensor (7) will detect the operating current value send to controller (1), controller (1) is received operating current value, and synthesize indoor temperature value with outdoor temperature value sends corresponding control signal respectively and gives shutter motor control switch (22) main exhaust fan motor control switch (32) with air conditioner control switch (41), in order to control the positive and negative rotation of shutter motor (21), the rotational speed gear switching and the start/stop of main exhaust fan motor (31), and the start/stop of air conditioner (4).
5. The intelligent temperature control method for the elevator machine room according to claim 4, further comprising a standby exhaust fan (8) installed in parallel beside the main exhaust fan (3), a standby exhaust fan motor (81) for adjusting the rotation speed of the standby exhaust fan (8), and a standby exhaust fan motor control switch (82), wherein the standby exhaust fan motor control switch (82) is respectively connected with the standby exhaust fan motor (81) and the controller (1);
the controller (1) comprehensively processes the indoor temperature value, the outdoor temperature value and the working current value, and sends out corresponding control signals to control the switching of the main exhaust fan (3) and the standby exhaust fan (8).
6. The intelligent temperature control method for an elevator machine room according to claim 5, wherein the standby exhaust fan motor control switch (82) is externally connected to a utility grid.
7. The intelligent temperature control method for the elevator machine room according to any one of claims 1 to 3, wherein a filter screen is installed at an air inlet of the louver (2) on the outer wall of the elevator machine room; and/or a mesh-shaped protective cover is arranged at the air outlet of the main exhaust fan (3) positioned on the outer wall of the elevator machine room.
8. The intelligent temperature control method for the elevator machine room according to claim 5, wherein a filter screen or a mesh-shaped protective cover is installed at the air outlet of the standby exhaust fan (8) on the outer wall of the elevator machine room; and/or the intelligent temperature control system for the elevator machine room further comprises an alarm receiving device (10) used for receiving an alarm signal, and the alarm receiving device (10) is connected with the controller (1).
9. The intelligent temperature control method of an elevator machine room according to claim 8, wherein the step S55/the step S57/the step S510, after the controller (1) controls the main exhaust fan (3) to operate in low/medium/high, further comprises the steps of:
s61, detecting the working current value of the main exhaust fan (3) in real time/according to a preset detection period, and executing the step S62;
s62, judging whether the working current value of the main exhaust fan (3) is smaller than the rated current when the main exhaust fan (3) operates at a low gear, if so, executing a step S63; otherwise, go to step S64;
s63, the controller (1) controlling the main exhaust fan motor control switch (32) to be turned off to stop the main exhaust fan (3) and simultaneously controlling the standby exhaust fan motor control switch (82) to be turned on to operate the standby exhaust fan (8) at a low gear/medium gear/high gear, and performing step S52;
and S64, the controller (1) controls the standby exhaust fan motor control switch (82) to be switched off so as to stop the standby exhaust fan (8), and the step S52 is executed.
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| CN113089773B (en) * | 2021-03-26 | 2023-02-21 | 格兰富控股联合股份公司 | Intelligent heat-preservation pump room and intelligent heat-preservation control method of pump room |
| CN113985997B (en) * | 2021-10-29 | 2023-07-14 | 苏州浪潮智能科技有限公司 | Server for solving negative wind pressure resistance of power supply fan |
| CN115142776B (en) * | 2022-07-06 | 2023-12-15 | 重庆伊士顿电梯有限责任公司 | Novel install elevator well additional |
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