KR20180023205A - Blower for elevator and control method thereof - Google Patents

Abstract

The present invention provides a blower for an elevator and a control method thereof, which can maintain the interior space of an elevator car in a pleasant condition by measuring the temperature of the interior space of the elevator car using a temperature sensor and varying the rotational speed of a variable motor for rotating a blower fan according to the temperature range. The blower comprises: a blower fan; a case having a housing portion in which the blower fan is installed, an air inflow portion, and an air discharging portion; a variable motor provided in the case for variable rotation of the blower fan; a temperature sensor for measuring the temperature inside an elevator car; and a microcomputer for variably controlling the rotation speed of the variable motor by comparing the sensed temperature measured by the temperature sensor with a set temperature.

Description

TECHNICAL FIELD [0001] The present invention relates to a blower for an elevator,

The present invention relates to an elevator fan system, and more particularly, to a fan system for an elevator that is capable of controlling the rotational speed of a blower fan according to a change in temperature inside an elevator car to provide a comfortable interior of the elevator car, The present invention relates to an elevator fan system and a control method thereof, which are independently driven and constructed in a compact structure to facilitate installation and maintenance.

Generally, an elevator is a device for transporting people or cargo to upper and lower parts along a hoistway formed vertically in a building such as a high-rise apartment, a public building or the like.

More specifically, the elevator is installed in a vertically formed hoistway inside a building so that an elevator car can be elevated and lowered, and a machine room in which an elevating motor for elevating and lowering the elevator car is installed is installed on the hoistway . Under the control of the machine room, the elevator car ascends and descends along the hoistway to conveniently carry passengers and cargo to the desired floor.

On the other hand, since the elevator car keeps the door in the closed state in the standby state as well as the ascending and descending to transport passengers and cargo, there is no air circulation in the space inside the elevator car.

As a result, the temperature inside the elevator car is considerably different from the external temperature due to the airtightness in the interior space of the elevator car during the transportation of a large number of passengers and cargoes. This makes it possible not only that the passenger feels discomfort when boarding, There is a high risk of contamination by harmful bacteria and the like.

Of course, in order to overcome such a problem, the public utility model No. 20-2012-0002881 (Reference 1) and the disclosure No. 10-2009-0014596 (Reference 2) have been proposed.

Reference 1 refers to an elevator purifier equipped with an activated carbon filter. The elevator purifier sucks the air in the elevator and purifies the inhaled air again, and blows the purified air back into the elevator. So that it is possible to completely remove contaminants and pathogens in the elevator.

In addition, Reference 2 relates to an air purifier, an elevator having the same, and an air purifying control method thereof. In the air purifier, ions are removed by plasma discharge to remove fine dust passing through a filter for removing dust in the air And a controller for comparing the dust pollution degree detected by the dust sensor with a preset reference pollution degree to compare the air pollution degree with the reference pollution degree or to compare the air temperature detected by the temperature sensor with a predetermined reference temperature, And a structure in which the ion generator and the fan are operated when the temperature is higher than the reference temperature.

However, in the conventional elevator internal space air purification structure, the fan is driven at a predetermined speed to remove pollutants or the like, or the fan is driven at a speed set according to the set reference pollution degree and the reference temperature, It is difficult to make it optimal.

REFERENCE 1: Public Utility Model No. 20-2012-0002881 Reference 2: Published Patent No. 10-2009-0014596

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide an elevator fan and a control method thereof for controlling the rotational speed of the fan in accordance with the temperature change in the elevator car.

It is another object of the present invention to provide an elevator blowing apparatus which is independently driven independently of the control and monitoring of an elevator car and has a compact structure and is easy to install and maintain.

In order to solve such a technical problem,

A case having a blowing fan, a housing in which the blowing fan is installed, a case in which an air inlet and an air outlet are formed, a variable motor installed in the case to vary the rotation of the blowing fan, And a microcomputer for variably controlling the rotation speed of the variable motor by comparing the sensed temperature measured by the temperature sensor with a predetermined temperature.

In this case, the blowing fan is a multi-blade blower that is arranged in a cylindrical shape in a supporting frame while keeping a plurality of blade pieces that are inclined forward with respect to the rotating direction.

The case includes first and second supporting rods located on both sides of the supporting frame of the blowing fan so as to form a receiving portion, and a front grill that surrounds a front portion between the first and second supporting rods and forms an air inflow portion, And a rear finishing plate which surrounds the upper and the lower surfaces of the first and second supporting members and forms an air discharging portion for guiding the air in the receiving portion to be discharged downward.

The front grill is provided with a screen for blocking foreign matter of a predetermined size from being introduced into the front of the elevator car when air is introduced into the elevator car.

At this time, the variable motor is fixed to the first bracket and is fixed to the outer surface of the first support, and the rotary shaft of the variable motor is provided with a connecting member and is integrally coupled to the first shaft hole formed at one end of the blowing fan And a second bracket fixed to an outer surface of the second support base, the support bracket being supported at a second shaft hole formed at the other end of the blower fan.

When the microcomputer receives a call signal from the elevator control device, the microcomputer drives and controls the variable motor for a set time. When the microcomputer receives a stop signal, the microcomputer ignores the set time and stops driving the variable motor .

Further, the case may further include a humidity sensor for measuring the humidity of the interior space of the elevator car, so that the ventilation fan and the air conditioner are driven when the sensed humidity and the sensed temperature of the elevator car interior space exceed the set temperature and the set humidity .

In addition, an air pollution sensor is further provided at one side of the case, and an air generator for generating negative ions is provided in the air exhaust portion of the case. The microcomputer sets an air pollution concentration detected through the air pollution sensor And when the concentration of pollution is exceeded, the negative ion generator is driven.

The present invention also provides

A control method for a blower having a variable motor for rotating an elevator blowing fan, the method comprising the steps of: receiving a sensed temperature measured by a temperature sensor; A second step of calculating a rotation speed of the variable motor according to a temperature setting period to which the sensed temperature measured by the temperature sensor belongs; And a third step of controlling the variable motor at a calculated rotation speed. [0029] The present invention also provides a control method for an elevator fan.

At this time, the second step calculates the rotation speed of the variable motor so that the specific set temperature is an inflection point and gradually increases according to the temperature below the predetermined set temperature, and when the temperature exceeds the specific set temperature, Is calculated.

Particularly, the specific set temperature is within a temperature range of 14 ° C ± 10 ° C, and the calculated rotation speed of the variable motor is within a range of ± 200rpm.

In the second step, if the sensed temperature measured by the temperature sensor is less than minus 10 ° C, the rotation speed of the variable motor is set to 200 rpm. If the sensing temperature is less than 0 ° C and less than 10 ° C, And the rpm value obtained by adding 200 is calculated as the rotation speed of the variable motor. If the sensed temperature is 0 ° C or more and less than 14 ° C, the rpm value obtained by multiplying the sensed temperature by 7.143 and adding 300 is calculated as the rotation speed of the variable motor, If the temperature is higher than or equal to 14 ° C and lower than 36 ° C, the rpm value obtained by subtracting 14 from the sensed temperature and multiplying by 54.545 is added to the rotation speed of the variable motor. If the sensing temperature is 36 ° C or higher, the rotation speed of the variable motor is set to 1600 rpm .

And a fourth step of receiving a call signal from the elevator control device before the first step, when the call signal is received.

And controlling the driving of the variable motor until the call signal is received from the elevator control device after the third step.

According to the present invention, the rotational speed of the variable motor is variably controlled so as to increase or decrease the wind speed of the blowing fan according to the temperature change inside the elevator car due to the season or day and night environment, thereby providing a comfortable environment for the passenger using the elevator.

In addition, the fan apparatus according to the present invention independently monitors temperature and the like regardless of the control and monitoring of the elevator car, and controls the rotational speed of the variable motor in a variable and variable structure, so that it can be easily installed at any place in the elevator car In addition, in the event of a failure or breakage, it is possible to quickly identify the cause of the failure, which is advantageous in maintenance.

1 is an assembled perspective view of an air blowing device for an elevator according to the present invention.
2 is an exploded perspective view of an air blowing device for an elevator according to the present invention.
Fig. 3 is a front view of the fan apparatus for an elevator according to the present invention.
4 is a left side view of an air blowing device for an elevator according to the present invention.
Fig. 5 is a right side view of the fan apparatus for an elevator according to the present invention.
6 is a partially exposed elevation view of an elevator according to the present invention.
7 is a cross-sectional view of one side of the inside of the fan apparatus for an elevator according to the present invention.
8 is a plan sectional view showing the interior of the fan apparatus for an elevator according to the present invention.
9 is a control block diagram of an air blowing device for an elevator according to the present invention.
10 is a graph showing the relationship between the temperature and the rotation speed for motor control of the present invention.
11 is a control flow chart of an air blowing device for an elevator according to the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of an elevator fan according to a first embodiment of the present invention; FIG.

Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately It should be interpreted in accordance with the meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined.

Therefore, the embodiments described in the present specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention, and not all of the technical ideas of the present invention are described. Therefore, It should be understood that various equivalents and modifications may be present.

Referring to FIGS. 1 to 9, the fan 100 for an elevator according to the present invention is installed in an elevator car interior space, and rotates the blowing fan 110 in accordance with the temperature inside the elevator car in the process of transporting passengers and cargo. Adjust the speed so that passengers can maintain a comfortable condition when boarding.

Of course, this can maintain a comfortable air condition of the car interior space suitable for seasonal temperature changes such as spring, summer, autumn and winter.

The fan 100 for an elevator according to the present invention is installed in an elevator car interior space and includes a blowing fan 110 and a housing portion S in which the blowing fan 110 is installed, A case 120 in which an air inlet 121 is formed in the case 120 and an air outlet 122 is formed in a lower portion of the case 120 and a variable motor 130 installed in the case 120 to variably rotate the blowing fan 110, A temperature sensor 140 for measuring the temperature of the interior space of the elevator car, a microcomputer for variably controlling the rotation speed of the variable motor 130 by comparing the sensed temperature measured by the temperature sensor 140 with a predetermined temperature, 150).

When the sensed humidity and sensed temperature of the elevator car interior space of the elevator exceed the set temperature and the set humidity, the ventilator 100 for the elevator according to the present invention is also operated in parallel with the air- And if the air pollution concentration due to various fine dusts or harmful bacteria in the interior space of the elevator car exceeds the predetermined pollution concentration, negative ions can be generated through the negative ion generator 160.

Hereinafter, the constitution of each part of the present invention will be described in detail.

The blowing fan 110 uses a multi-blade blower having a plurality of fingers 111 inclined forward with respect to the rotational direction and being disposed at equal intervals and disposed in a cylindrical shape in the support frame 112.

At this time, the multistage blower operates at a lower speed than other types of blowers, and is mainly used when a low pressure and a large amount of air are required, and is suitable for air circulation in an interior space of an elevator car.

First and second shaft holes 113 and 114 are formed at both ends of the supporting frame 112 of the air blowing fan 110.

The case 120 is formed with a receiving portion S in which the blowing fan 110 is installed and has an air inlet 121 formed at the front thereof and an air outlet 122 formed at a lower portion thereof, The air blowing fan 110 is forcibly introduced into the accommodating portion S through the air inflow portion 121 and discharged through the air discharging portion 122 during rotation.

The case 120 includes first and second supports 123 and 124 disposed on both sides of the support frame 112 of the blowing fan 110 to form a receiving portion S and first and second supports 123 and 124, A front grill 121a which surrounds the front part of the first and second support rods 123 and 124 and forms an air inflow part 121 through which the air flows, And a rear finishing plate 125 that forms an air discharge portion 122 for guiding the air to be discharged downward.

First and second through holes 123a and 124a through which both ends of the support frame 112 of the blowing fan 110 are inserted are formed in the first and second support rods 123 and 124, respectively.

The front grill 121a has a plurality of air inflow holes 121b formed on the front surface thereof to form an air inflow portion 121. The rear finishing plate 125 has an air guide surface having a curved inner surface, And an air discharging portion 122 extending to the lower end to guide the discharge of air is formed.

At this time, the front grill 121a is provided at the front of the front grill 121a with a "? &Quot; -shaped screen 126 for blocking foreign matter of a predetermined size from entering into the inside of the elevator car.

The variable motor 130 is fixed to the outer surface of the first support 123 which is fixed to the first bracket 132 and is an outer side of the case 120. The rotary shaft 131 of the variable motor 130 is integrally coupled to the first shaft hole 113 formed at one end of the support frame 112 of the blowing fan 110 with a connection member 135.

A support shaft portion 138a (not shown), which is supported by a second shaft hole 114 formed at the other end of the support frame 112 of the blowing fan 110, is formed on the outer side surface of the second support member 124, Is protruded from the second bracket 138.

With this structure, when the variable motor 130 is driven by the microcomputer 150, the blowing fan 110 coupled by the connecting member 135 is stably rotated while being supported by the support shaft portion 138a .

The first bracket 132 is provided with a temperature sensor 140 for measuring the temperature of the interior space of the elevator car and a second temperature sensor 140 for comparing the sensed temperature measured by the temperature sensor 140 with a preset temperature, And a microcomputer 150 for variably controlling the rotation speed is fixed.

At this time, the microcomputer 150 has a built-in memory storing a predetermined program, and may include a microprocessor and a separate memory in addition to the microcomputer, all of which fall within the scope of the present invention.

Of course, the microcomputer 150 is operated by receiving power from the power supply unit 151, and the power supply unit 151 uses power supplied to the inside of the elevator car.

When the call signal is received from the elevator control device 300 such as a car call device installed in the elevator car, the microcomputer 150 sets the variable motor 130 to the set time For example, 30 minutes), and stops the drive of the variable motor 130 when the STOP signal is received, ignoring the set time.

The case 120 further includes a humidity sensor 170 for measuring the humidity of the internal space of the elevator car. The microcomputer 150 controls the air conditioner 200 that lowers the temperature of the interior space of the elevator car as well as the blowing fan 110 when the sensed humidity and sensed temperature of the interior space of the elevator car exceed the set temperature and the set humidity .

That is, when the interior space of the elevator car is hot and humid, the air conditioner 200 may be operated to supply clean air so as not to humidify the interior space of the elevator car.

Of course, the microcomputer 150 transmits / receives control information to / from the elevator control device 300 or the air conditioner 200 through a communication module 155 in a wired or wireless manner.

The air discharge unit 122 of the case 120 is provided with an anion generator 160 capable of generating negative ions and an air contamination sensor 180 is provided at one side of the case 120. The microcomputer 150 drives the negative ion generator 160 to generate negative ions when the air contamination concentration detected through the air pollution sensor 180 exceeds the set contamination concentration, .

That is, when the air pollution sensor 180 is installed in the case 120 and the microcomputer 150 generates odors or the like due to mold or various contaminations exceeding the tolerance, the negative ion generator 160 is driven to generate negative ions, Car interior space is managed comfortably.

Hereinafter, a control process of the fan apparatus for an elevator according to the present invention will be described with reference to FIGS. 10 and 11. FIG.

10, the rotation of the variable motor 130 is controlled gently at a rotation speed of 200 to 400 rpm in a range of minus 10 ° C to 14 ° C in winter, spring and autumn, The internal space of the elevator car can be maintained in a comfortable state by circulating the air by controlling the rotation of the variable motor 130 at a rotation speed of 400 to 1600 rpm at a relatively steep slope in the range of 14 to 36 ° C.

More specifically, the rotation speed of the variable motor 130 is gradually increased according to the temperature at a specific set temperature (for example, image 14 ° C) as an inflection point, The rotational speed of the variable motor 130 can be increased rapidly. In this case, depending on the elevator environment, a specific set temperature (for example, image 14 ° C) can be adjusted to a temperature range of ± 10 ° C. In addition, the rotation speed calculated according to the temperature according to the elevator environment may be adjusted to the range of ± 200 rpm.

That is, the slope of the graph between the temperature and the rotation speed shown in FIG. 10 can be shifted left and right along the temperature axis within a temperature range of ± 10 ° C from the specific set temperature as the starting point, and the calculated rotation speed of the variable motor is set in the range of ± 200 rpm And can move upward and downward along the rotation speed axis rpm within a predetermined range.

The microcomputer controls the rotation speed of the variable motor 130 according to the control flow as shown in FIG.

First, the microcomputer 150 is initialized when the power of the power source 151 is turned on. In this state, the microcomputer 150 receives the sensed temperature measured from the temperature sensor 140 in real time. The microcomputer 150 may initialize the microcomputer 150 upon receiving a call signal from the elevator control device 300. [

The microcomputer 150 selects and compares the sensed temperature T1 measured by the temperature sensor 140 with respect to one of the plurality of temperature setting intervals and determines a rotation speed corresponding to the sensed temperature And controls the variable motor 130 to the calculated rotation speed (S2 to S11). In this case, the plurality of temperature setting intervals may vary depending on the specifications of the elevator and the installation environment.

More specifically, after step S1, the microcomputer 150 compares whether the sensed temperature T1 measured by the temperature sensor 140 is less than minus 10 degrees C. (S2)

If the sensed temperature T1 is less than minus 10 degrees Celsius through step S2, the rotation speed of the variable motor 130 is set to 200 rpm to control the rotation of the variable motor 130. (S3)

If the sensed temperature T1 is minus 10 ° C or more, it is checked whether the sensed temperature T1 is less than 0 ° C. (S4)

If the sensed temperature T1 is less than or equal to -10 ° C and less than 0 ° C through step S4, the rotation speed of the variable motor 130 is multiplied by 10 to the sensed temperature and the rpm value obtained by adding 200 to the rotation speed of the variable motor 130 And controls the rotation of the variable motor 130. (S5)

If it is determined in step S4 that the sensed temperature T1 is equal to or higher than 0 DEG C,

If the sensed temperature T1 is less than or equal to 0 ° C and less than 14 ° C in step S6, the rotational speed of the variable motor 130 is multiplied by the sensed temperature of 7.143, and the rpm value obtained by adding 300 to the rotational speed of the variable motor 130 And controls the rotation of the variable motor 130. (S7)

If it is determined in step S6 that the sensed temperature T1 is equal to or higher than 14 DEG C,

If the sensed temperature T1 is less than or equal to 14 ° C and less than 36 ° C in step S8, the rotational speed of the variable motor 130 is multiplied by 54.545 by subtracting 14 from the sensed temperature, And controls the rotation of the variable motor 130. (S9)

In step S8, it is determined whether the sensed temperature T1 is equal to or higher than 36 DEG C. (S10)

If the sensed temperature T1 is 36 ° C or more through step S10, the rotation speed of the variable motor 130 is set to 1600 rpm to control the rotation of the variable motor 130. (S11)

Meanwhile, the microcomputer 150 controls the rotation of the variable motor 130 through steps S3, S5, S7, S9, and S11 to set the set time for driving when the variable motor 130 is driven. S12) This can be set to, for example, 30 minutes, and can be adjusted to be set differently depending on the situation.

After the step S12, the microcomputer 150 counts the driving time whether the set time has been reached, and monitors whether or not the set time has been reached. (S13)

If the drive time reaches the set time through the step S13, the microcomputer 150 inputs and updates the sensed temperature inputted from the temperature sensor 140 (S14, S15) and performs the step S2.

If it is determined in step S13 that the set time has not been reached, the microcomputer 150 compares whether a STOP signal is received from the elevator control device 300. In step S16,

In step S13, the microcomputer 150 stops driving the variable motor 130 when a stop signal is received (step S17)

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. The scope of protection of the present invention should be construed under the following claims, and all technical ideas within the scope of equivalents thereof should be construed as being included in the scope of the present invention.

100: blower 110: blower fan
120: Case 130: Variable motor
140: Temperature sensor 150: Microcomputer
160: Negative ion generator 170: Humidity sensor
180: air pollution sensor 200: air conditioner
300: Elevator control device

Claims (14)

A case having a blowing fan, a housing in which the blowing fan is installed, a case in which an air inlet and an air outlet are formed, a variable motor installed in the case to vary the rotation of the blowing fan, And a microcomputer for variably controlling the rotation speed of the variable motor by comparing the sensed temperature measured by the temperature sensor with a preset temperature.
The method according to claim 1,
Wherein the blower fan is a multi-blade blower having a plurality of blade pieces which are inclined forward with respect to a rotating direction and are arranged at regular intervals and arranged in a cylindrical shape in a support frame.
The method according to claim 1,
The case includes a first and second support rods located on both sides of a supporting frame of the blowing fan to form a receiving portion, a front grill surrounding the front portion between the first and second rods and forming an air inflow portion into which air flows, And a rear finishing plate which surrounds the upper and the lower surfaces of the first and second supporting members and forms an air discharging portion for guiding the air in the receiving portion to be discharged downward.
The method of claim 3,
Wherein a front surface of the front grill is provided with a filtering net for blocking foreign matter having a predetermined size from being introduced when air in the elevator car flows into the elevator car.
The method of claim 3,
The variable motor is fixed to the first bracket and is fixed to the outer surface of the first support. The rotary shaft of the variable motor is provided with a connecting member and is integrally coupled to the first shaft hole formed at one end of the blowing fan,
Wherein the second bracket is fixed to an outer surface of the second support base, the support bracket being supported at a second shaft hole formed at the other end of the blowing fan.
The method according to claim 1,
When the microcomputer receives a call signal from the elevator control device, the microcomputer drives and controls the variable motor for a set time period. When the microcomputer receives a stop signal, the microcomputer ignores the set time and stops driving the variable motor. Wherein the elevator fan is provided with an elevator.
The method according to claim 1,
Wherein the case further comprises a humidity sensor for measuring the humidity of the interior space of the elevator car so that the ventilation fan and the air conditioner are driven when the sensed humidity and the sensed temperature of the elevator car interior space exceed the set temperature and the set humidity, Ventilator for elevator.
The method according to claim 1,
The air conditioner further includes an air pollution sensor disposed at one side of the case, and the air exhaust unit of the case is provided with an anion generator capable of generating negative ions. The microcomputer detects the air pollution concentration detected through the air pollution sensor, Wherein the negative ion generator drives the negative ion generator.
A control method for a fan apparatus having a variable motor for rotating an elevator fan,
A first step of receiving a sensing temperature measured from a temperature sensor;
A second step of calculating a rotation speed of the variable motor according to a temperature setting period to which the sensed temperature measured by the temperature sensor belongs;
And a third step of controlling the variable motor at a calculated rotation speed.
10. The method according to claim 9,
Calculating a rotational speed of the variable motor so that the specific set temperature is an inflection point and gradually increasing according to temperature at a temperature lower than a specific set temperature and calculating the rotational speed of the variable motor so as to increase abruptly according to the temperature And a control unit for controlling the fan unit.
11. The method of claim 10,
Wherein the specific set temperature is within a temperature range of 14 ° C ± 10 ° C and the calculated rotational speed of the variable motor is within a range of ± 200rpm.
10. The method according to claim 9,
If the sensed temperature measured by the temperature sensor is less than minus 10 ° C, the rotation speed of the variable motor is set to 200 rpm,
If the sensed temperature is less than or equal to -10 ° C and less than 0 ° C, the sensing temperature is multiplied by 10 and the rpm value obtained by adding 200 is calculated as the rotation speed of the variable motor,
If the sensed temperature is 0 ° C or more and less than 14 ° C, the sensed temperature is multiplied by 7.143, the rpm value obtained by adding 300 is calculated as the rotation speed of the variable motor,
If the sensed temperature is higher than or equal to 14 ° C and less than 36 ° C, 14 is subtracted from the sensed temperature, and the rpm value multiplied by 54.545 and added to 400 is calculated as the rotation speed of the variable motor,
Wherein the rotation speed of the variable motor is set to 1600 rpm when the sensing temperature is 36 DEG C or more.
10. The method of claim 9,
And a fourth step of receiving a call signal from the elevator control device before the first step when the elevator control device receives the call signal.
10. The method of claim 9,
And a fifth step of controlling the drive of the variable motor after the third step until a set time or a call signal is received from the elevator control device .

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