JPH11263559A - Ventilation device for elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To always maintain the air environment in an elevator car favorable. SOLUTION: This ventilation device for elevator is provided with a nasty smell detector 12 detecting a nasty smell in the elevator car and a ventilating device 6 operated based on the signal obtained from the nasty smell detector 12. This nasty smell detector 12 is provided with a plurality of sorts of the nasty smell detectors, and a controller controlling operation of the ventilating device 6 based on the signals obtained from the nasty smell detectors. Hereby, because the ventilating device 6 is automatically operated by the detected signal of the nasty smell detector 12, favorable air environment is always maintained in the car, and uncomfortable feeling can be removed from the passengers.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilation system for maintaining a good air environment in an elevator car,
The present invention relates to a ventilating device for an elevator that senses an unusual odor and ventilates the odor when the odor is generated in a car.

[0002]

2. Description of the Related Art In order to maintain a good air environment in an elevator car, the elevator car is provided with a ventilation device. Therefore, a conventional elevator ventilation device will be described first with reference to FIGS.

FIG. 10 is a perspective view showing the inside of a car for explaining the car of the elevator. A door 2 that opens on both sides is provided in front of the elevator car 1, and an operation panel 4 on which a destination floor button for registering a destination floor and the like are arranged on a side plate 3 beside the door 2 is provided. . The ceiling 5 of the car 1 is provided with a ventilation device 6 for ventilating the inside of the car 1. A switch 7 for turning on / off the ventilator 6 and switching the air flow is stored inside the cover of the operation panel 4 so as not to be directly operated from the outside.

The ventilator 6 discharges the air in the car 1 to the outside of the car 1 by means of blades which are connected to a motor and rotate. The air volume can be switched in two stages. Therefore, as shown in FIG. 11, the power of the elevator control device 8 is switched to the terminal of the motor of the ventilation device 6 by the switch 7 and supplied. That is, as shown in FIG. 12, the ventilator 6 has several power supply input points, and is connected to the power supply such that the blades of the ventilation fan rotate at different speeds depending on the input points.

[0005] As shown in FIG.
F, LOW, HIGH can be switched to three stages. When OFF, the power is shut off, when LOW, the blade is rotated slowly, and when HIGH, the blade is rotated at high speed. In addition, a name plate as shown in FIG. 13 representing a switching point is attached to the switch 7 in the operation panel 4.

Next, the operation of the conventional ventilation device 6 configured as described above will be described.

First, in order to operate the ventilation device 6, a key switch provided on the lid of the operation panel 4 of the elevator car 1 is opened by an elevator administrator or the like, and the operation panel 4 is opened.
The switch 7 stored in is operated. As a result, power is supplied to the ventilator 6 through the path selected by the switch 7, and the motor of the ventilator 6 rotates at a low or high speed by the supplied power, thereby performing ventilation in the elevator car 1.

That is, as shown in FIG. 12, one of two AC100V electric wires supplied to the switch 7 is always connected to the ventilator 6, and the other is switched by the switch 7. It has become. And
When the contact of the switch 7 is in the OFF position, the circuit is disconnected, and the ventilator 6 does not operate. In the LOW position, a voltage is applied to the low-speed input terminal of the ventilator 6 and the ventilator 6 operates at a low speed. In the HIGH position, a voltage is applied to the input terminal for high speed, and the ventilator 6 operates at high speed to perform ventilation with strong wind.

[0009]

As described above, in the conventional ventilator 6, the switch 7 for the ventilator is stored in the operation panel 4, so that the key of the key switch dedicated to the elevator is changed by an administrator or the like. Must be unlocked and operated. If necessary, ON / OFF operations can be performed as well as LOW /
The HIGH air volume switching could not be operated.

[0010] Therefore, there is a problem that even when an unpleasant odor is generated in the elevator car 1 and the air environment is deteriorated and passengers feel uncomfortable, the ventilation device cannot be operated immediately. The present invention has been made to solve such a problem.

[0011]

SUMMARY OF THE INVENTION The present invention provides an odor detector for detecting an odor in an elevator car, and a ventilator which operates based on a signal obtained from the odor detector and ventilates the elevator car. It is provided with.

[0012] Thus, the ventilation device is automatically operated based on the detection signal of the off-odor detector, so that the inside of the car is always maintained in a favorable air environment, and the discomfort of the passenger can be eliminated.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Various embodiments of the present invention will be described below in detail with reference to FIGS.

FIG. 1 is a perspective view showing the interior of a car for explaining an elevator car to which the present invention is applied. A door 2 that opens on both sides is provided in front of the elevator car 1, and an operation panel 4 on which a destination floor button for registering a destination floor and the like are arranged on a side plate 3 beside the door 2 is provided. . The ceiling 5 of the car 1 is provided with a ventilation device 6 for ventilating the inside of the car 1. They are,
It is the same as the car 1 of the conventional elevator. Further, in the present invention, a controller 11 capable of recognizing the passage of time and an off-odor detector 12 for detecting an off-odor in the car 1 and supplying a detection signal to the controller 11 are provided on the ceiling 5 of the car 1. I have.

FIG. 2 shows a system diagram of an embodiment of an elevator ventilator according to the present invention,
The controller 11 includes a control unit 11a and a timer unit 11b. The control unit 11a is connected to the ventilation device 6 and the off-flavor detector 12, and these components are connected to the elevator control device 8
Power is supplied from the power supply section of the power supply.

FIG. 3 shows the structure and operation principle of the off-flavor detector 12.
This will be described with reference to FIG.

As shown in FIG. 3, the off-flavor detector 12 is formed by applying a metal oxide semiconductor 12b to a platinum wire coil 12a and sintering it. Then, a current is supplied to the platinum wire coil 12a by a constant current source 13 as shown in FIG. 4, so that the metal oxide semiconductor 12b is kept at a constant high temperature. When an odorous component is deposited on the surface of the metal oxide semiconductor 12b, its electric conductivity changes. When the electric conductivity improves, the temperature decreases due to heat radiation and the resistance value decreases. It can be taken out as a voltage change (decrease). In addition, an off-flavor component that can be detected depending on the type of the metal oxide semiconductor 12b can be specified, for example, hydrogen sulfide odor, ammonia odor,
It can be used properly depending on the application so as to react to the aroma or the like.

FIG. 5 is a block diagram showing the internal configuration of the controller 11.

As described above, the controller 11 controls the controller 1
The control unit 11a includes a digital input unit DI for inputting a voltage as a detection signal from the off-flavor detector 12, call registration information from the elevator control device 8, and the like, and a ventilation device. 6, a central processing unit CPU for performing arithmetic processing based on information from a digital output unit DO for sending a control signal to the memory unit 6, a fixed storage device ROM, a random access memory RAM, and a digital input unit DI. It is connected. Therefore, the control unit 11a is controlled by the central processing unit CPU based on the voltage change of the off-flavor detector 12, various control signals from the elevator control unit 8, and the contents of the fixed storage ROM, which are input through the digital input unit DI. By performing the arithmetic processing, an appropriate control signal is sent to the ventilator 6 through the digital output unit DO, and the ventilator 6 performs O based on the control signal.
Operating states such as N / OFF and LOW / HIGH are controlled.

Next, the operation of the thus configured elevator ventilator will be described with reference to the flowchart shown in FIG.

An off-flavor detector 12 installed above the car 1
Is connected to the power supply of the elevator control device 8, is always supplied with current, and is always operable. Therefore, when an off-flavor is generated in the car 1, the off-flavor detector 12 reacts to the off-flavor component, so that the output voltage changes according to the off-flavor concentration, and this voltage change is detected by the controller 11 installed on the car 1. And outputs it as a detection signal. That is, if the voltage change input from the off-flavor detector 12 exceeds a predetermined range of change, the controller 11 determines that an off-flavor has been detected (ST1). As long as the ventilation device 6 remains, the ventilator 6 is operated with a predetermined output (ST2).

When the ventilator 6 starts operating, the timer 11b of the controller 11 starts operating (ST).
3). When the continuous operation time of the ventilator 6 reaches a certain time (ST4), the controller 11 stops supplying the operation command signal to the ventilator 6, stops the ventilator 6, and further elapses the certain time. Unresponsive state until (ST
5). Thereafter, the controller 11 returns to the initial state, and the car 1
Monitor the air environment inside. After the off-flavor detector 12 detects the off-flavor (ST1), the off-flavor disappears and the off-flavor detector 12 detects
When the detection signal is no longer output from the CPU, the ventilation device 6 is stopped and the timer 11b is reset (ST
6).

As described above, when the air environment in the car 1 is deteriorated, the ventilation device 6 is automatically operated regardless of the presence or absence of a passenger and without the need for operation by an administrator or the like. 1 can always maintain a favorable air environment.

In the above embodiment, the controller 11
Although the voltage change of the off-flavor detector 12 determined by the above is only for one threshold value, the off-flavor detector 12 changes the output voltage according to the intensity of the off-flavor detected. The operation command signal can be supplied to the ventilator 6 stepwise according to the degree of change in the output voltage of the ventilator 12.

Hereinafter, such an embodiment will be described with reference to the flowchart shown in FIG. Note that the flowchart of FIG. 7 corresponds to ST1 to S1 of the flowchart of FIG.
The part of T2 is replaced by this embodiment.

In this embodiment, the controller 11 is capable of detecting a voltage change of the off-flavor detector 12 for, for example, four threshold values, and operates the ventilator 6 according to the detected threshold values. It is. That is, in the controller 11, if the output voltage of the off-flavor detector 12 is V, V <V1,
V1 <V <V2, V2 <V <V <V3, and V3 <V can be detected in four stages, and the relationship among V1, V2, and V3 is V1
<V2 <V3. In this case, it goes without saying that the air volume of the ventilator 6 itself can be switched in four stages, and the air volume of the ventilator 6 is increased as the unpleasant odor becomes stronger, thereby increasing the ventilation volume.

Therefore, the potential difference V corresponding to the intensity of the off-flavor is output from the off-flavor detector 12 to the controller 11. If the potential difference V is equal to or higher than a certain reference set in the control section 11a, the controller 11 detects the off-flavor. Judge as detected (ST
1). Next, the control unit 11a controls the input abnormal odor detector 12
Are sequentially distributed in a stepwise manner based on a predetermined reference (ST1a to ST1c), and the output to the ventilator 6 is determined according to the step. Therefore, the controller 11 sends a control signal for operating the ventilator 6 with the determined output, and the ventilator 6 operates with the airflow according to the control signal (S
T2a to ST2d). Other operations are the same as those described with reference to FIG.

In this embodiment, since the ventilator 6 is operated with an output according to the degree (intensity) of the unusual odor, the air environment in the elevator car 1 can be more effectively maintained.

Next, another embodiment of the present invention shown in FIGS. 8 and 9 will be described.

In this embodiment, as shown in the block diagram of FIG. 8, call registration information is supplied from the elevator control device 8 to the control section 11a of the controller 11, and the hall call or the car call is provided. The ventilator 6 is operated only when the airflow has occurred. The operation of the embodiment configured as described above will be described with reference to the flowchart shown in FIG.

That is, since the registration information of the hall call or the car call from the elevator control device 8 is supplied to the control unit 11a, the control unit 11a determines whether any of the calls is registered, and makes a call. The ventilator 6 is operated only when registration has been made, and no operation is performed when there is no call registration (ST0). Other operations are the same as those described with reference to FIG. 6, and therefore, the same step numbers are assigned to the respective operation steps, and the description thereof is omitted.

In this embodiment, when the passenger does not use the elevator, the ventilation device 6 is not operated.
The power saving effect can be improved in an elevator with a small number of users or in a time zone with a small number of users of the elevator.

It is needless to say that the present invention is not limited to the above-described embodiment, but can be implemented in various modifications. For example, an off-flavor detector 1 that responds to different odors
By providing a plurality of two in parallel, the ventilator 6 can be operated by detecting a plurality of types of off-flavors.

[0034]

As described above in detail, according to the present invention, when the air environment in an elevator car deteriorates, it is detected instantaneously and the ventilator is automatically operated,
You can always keep a good air environment inside the car,
Provided is a ventilator that is effective in a building where food is used or a floor where an odor is generated is mixed. Further, in an elevator commonly used for carrying cargo with passengers, discomfort of passengers can be promptly reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the inside of a car for explaining a car of an elevator to which the present invention is applied.

FIG. 2 is a system diagram showing an embodiment of an elevator ventilation device according to the present invention.

FIG. 3 is an explanatory diagram shown to explain a configuration of an off-flavor detector.

FIG. 4 is an explanatory diagram shown to explain the operation of the off-flavor detector.

FIG. 5 is a block diagram shown for explaining an internal configuration of a controller.

FIG. 6 is a flowchart shown to explain the operation of the present invention.

FIG. 7 is a flowchart shown to explain an operation of another embodiment of the present invention.

FIG. 8 is a block diagram shown for explaining still another embodiment of the present invention.

FIG. 9 is a flowchart shown to explain the operation of the embodiment shown in FIG. 8;

FIG. 10 is a perspective view for explaining the inside of a conventional elevator car.

FIG. 11 is a system diagram for explaining a conventional elevator ventilation device.

FIG. 12 is an explanatory diagram for explaining a changeover switch of a conventional ventilation device.

FIG. 13 is an explanatory diagram showing a nameplate of a switch.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Elevator car 6 Ventilation device 8 Elevator control device 11 Controller 11a Control unit 11b Timer unit 12 Offensive odor detector

Claims (6)

[Claims] 1. An odor detector for detecting an odor in an elevator car, and a ventilator that operates based on a signal obtained from the odor detector and ventilates the elevator car. Elevator ventilation system. 2. The ventilation device for an elevator according to claim 1, further comprising a controller that controls an operation of the ventilation device based on a signal obtained from the off-odor detector. 3. The ventilation of an elevator according to claim 1, wherein the off-flavor detector includes a plurality of types of off-flavor detectors that detect different off-flavors, respectively. apparatus. 4. The ventilation device for an elevator according to claim 1, wherein the off-flavor detector outputs a signal corresponding to the intensity of the off-flavor detected. 5. The ventilation device for an elevator according to claim 2, wherein the controller controls the ventilation device according to the type or intensity of the off-flavor detected by the off-flavor detector. 6. The ventilator according to claim 2, wherein the controller controls the ventilator to operate when an elevator car call or a hall call is registered.