JPH04298478A - Ventilating device for elevator - Google Patents

Abstract

PURPOSE:To prevent hot air from being drawn into a cage from the elevator boarding place. CONSTITUTION:In a ventilating device for an elevator, there are provided a door opening detecting means 6 to detect door opening of an elevator and switching circuits 61-64 to switch the direction of rotation of a ventilating fan 2 for air intake/exhaust in the case when this door opening detecting means 6 has detected the door opening.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator ventilation system.

0002

[Prior Art] A conventional device is disclosed in Japanese Patent Application Laid-open No. 63-12378.
As described in Publication No. 8, the capacity of the air conditioning equipment can be changed by providing an auxiliary blower device having an intake fan in the intake duct and linking the intake fan with a built-in fan housed in the air conditioning equipment. This was to compensate for the pressure loss caused by the shape of the duct.

0003

[Problems to be Solved by the Invention] In the above conventional technology, when the elevator stops and the door opens, hot air from the landing enters the car, making the passengers inside the car feel hot. In addition, there was a problem that the cooling efficiency inside the car was reduced.

SUMMARY OF THE INVENTION An object of the present invention is to provide an elevator ventilation system that can prevent hot air from the hall from being sucked into the car.

[0005]

[Means for Solving the Problems] In order to achieve the above object, in an elevator ventilation system including at least two ventilation fans on the ceiling of an elevator car, one of the ventilation fans is used to suck air from the outside of the car ceiling into the inside. and the other is an intake/exhaust ventilation fan, and a door opening/closing detection means for detecting opening and closing of the door of the passenger car is provided, and when the door opening/closing detection means detects that the door is closed, The ventilation switching means operates the intake/exhaust ventilation fan for exhaust when the door opening/closing detection means detects that the door is open, and operates the intake/exhaust ventilation fan for intake.

[0006]

[Function] When the elevator door opens, a switching circuit activates the rotation direction of the intake/exhaust ventilation fan, and it operates as an intake ventilation fan that draws air from the outside of the car ceiling into the interior, so all ventilation fans inside the car are used for intake. This prevents hot air from entering the car from the landing area.

[0007]

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

In the figure, an intake ventilation fan 1 and an intake/exhaust ventilation fan 2 for sucking air into a car 3 are installed on a ceiling 4 of a car 3 of an elevator. Further, a contact 5 that opens when the car door 4 of the car 3 is opened is connected to a door open detection relay 6 which is means for detecting an open door. The motor 1M of the exhaust ventilation fan 1 is connected to the pole 11 via the switch 7 from the control power source P.
, motor 1M, pole 12, and control power supply N, and when the switch is turned on, intake rotation is always performed. In addition, the motor 2M of the intake/exhaust ventilation fan 2 is connected to the normally open contact 6 of the door open detection relay 6 connected to the pole 21 side from the control power supply N.
1 and the normally closed contact 62 of the door open detection relay 6 connected from the control power supply P via the switch 8. The normally open contact 63 of the door open detection relay 6 is connected to the normally closed contact 64 of the door open detection relay 6 connected to the control power supply N, and the connections of these contacts 61, 62, 63, and 64 allow intake and exhaust The rotation direction of the motor 2M of the ventilation fan 2 is switched, and when the car door 4 is closed, it is switched for exhaust air, and when it is open, it is switched for intake air.

Next, the operation will be explained.

First, switches 7 and 8 are turned on and the car door 4 is turned on.
When the is closed, the exhaust ventilation fan 1 is P-7-11-1
In the circuit M-12-N, a current flows to 1M and rotates for exhaust, and the air flow is in the direction of discharging air to the car 3 as shown in 1a, that is, for intake. In addition, since the car door 4 is closed, the door open detection relay 6 is energized by the circuit P-5-6-N, and the motor 2 of the intake ventilation fan 2 is activated.
M rotates as a current flows through the circuit P-5-6-N for intake, and the air flow is as shown in 2b so that air is sucked in from the car 3 and released outside the car 3, that is, for exhaust. It has become.

Next, when the car door 4 opens and the landing door 9 connected to the car door 4 opens, the contact 5 opens, so that P-
The circuit of P-8-62-21 is opened, the door open detection relay 6 is deenergized, and the motor 2M of the intake ventilation fan 2 is switched to P-8-62-21.
Since current flows through the -2M-22-64-N circuit, the rotation direction is switched, and the ventilation fan is switched from exhaust to intake, and the air flow of intake and exhaust ventilation fan 2 is directed to discharge air to car 3. As shown by arrow 2a, it is for intake, and the air pressure inside the car 3 is higher than on the landing 10 side, so the direction in which air exits from inside the car 3 to the landing 10, that is, arrow
As shown in a, the hot air from the landing 10 does not enter the car 3.

0012

[Effects of the Invention] According to the present invention, when the elevator door opens, a switching circuit that switches the rotation direction of the ventilation fan for intake and exhaust is activated, and all the ventilation fans in the car are used for intake ventilation, and the ventilation fans from the landing are used for intake ventilation. Since hot air does not enter the passenger car, a drop in cooling efficiency can be prevented.

[Brief explanation of drawings]

FIG. 1 is a ventilator control circuit diagram showing one embodiment of the present invention.

FIG. 2 is an explanatory diagram of air blowing inside the car when the door is opened.

FIG. 3 is an explanatory diagram of air blowing inside the car when the door is closed.

[Explanation of symbols]

1　Exhaust ventilation fan 2. Intake ventilation fan 4 Ceiling 6 Door open detection relay

Claims (1)

[Claims] [Claim 1] An elevator ventilation system comprising at least two ventilation fans on the ceiling of an elevator car, comprising:
One of the ventilation fans is an intake ventilation fan that takes air from the outside of the car ceiling into the inside, and the other is an intake and exhaust ventilation fan, and door opening/closing detection means for detecting opening and closing of the door of the car is provided. When the detection means detects that the door is closed, the intake/exhaust ventilation fan is operated for exhaust, and when the door opening/closing detection means detects that the door is open, the intake/exhaust ventilation fan is operated for intake. A ventilation system for an elevator, characterized in that it is provided with ventilation switching means.