JPH05278971A - Elevator in-cage air-conditioning device - Google Patents

Abstract

PURPOSE:To prevent warm air from flowing into a landing cage when a landing cage door is opened while reducing a space and a noise. CONSTITUTION:In an elevator cage inside air-conditioning device provided with an air conditioner 2 at the top of an elevator cage 1 so as to air-condition the inside of the landing cage 1 by means of this air conditioner 2, a duct 5 to suck air of the cage and a duct 6 to suck air of a hoistway are provided in the air conditioner 2, and a switching device, for example, a motor damper 7 is provided to switch the air conditioner 2 so as to suck the air from the duct 5 to suck the air of the cage or from the duct 6 to suck the air of the hoistway.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner for an elevator car.

[0002]

2. Description of the Related Art Generally, when the temperature inside an elevator car is lower than that at a hall or hoistway, hot air from the hall or hoistway flows into the car when the door is opened due to a difference in specific gravity of air. It is known that there is a problem that the efficiency of air conditioning inside the car is reduced. Conventionally, in order to solve this problem, an air curtain is installed at the entrance and exit of the car as described in, for example, Japanese Patent Application Laid-Open No. 62-96292, and when the elevator opens the door, the air curtain is operated to open the door. It is known that the warm air is prevented from flowing into the car during the operation.

[0003]

However, according to such a conventional technique, an air conditioner and an air curtain device must be installed on a narrow car, and a sufficient maintenance space on the car after installation is ensured. There is a problem that you can not do it.

Further, in order to exert its effect, the air velocity of the air curtain has to be considerably higher than that of a general air conditioner, resulting in an increase in the size of the device and an increase in noise due to wind. .

An object of the present invention is to provide an air conditioner for a car in an elevator, which is space-saving and can prevent warm air from flowing when a door is opened with a small noise.

[0006]

In order to achieve the above object, the present invention comprises an air conditioner installed on a car of an elevator, and an air conditioner in a car of an elevator, which air-conditions the car by the air conditioner. In the device, a duct for sucking air in the car and a duct for sucking air in the hoistway are provided in the air conditioner, and the air sucked by the air conditioner is supplied from the duct for sucking air in the car, or the hoistway. The structure is provided with a switching device for switching from a duct sucking in from.

[0007]

Since the present invention has the above-mentioned structure, when the door of the elevator is opened, the suction side duct of the air conditioner is switched from the car side to the hoistway side, and the air in the hoistway is sucked and cooled by the air conditioner. It will be supplied later in the car. Therefore, the air pressure inside the car will be higher than that of the hoistway and landing,
The inflow of hot air from these can be prevented.

[0008]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an external view of an elevator car air conditioner according to the present invention. 1 is a car, 2 is an air conditioner provided on the car 1, 3 is an intake duct of the air conditioner 2, and 4 is an air conditioner. Is a blower duct for sending cool air from the air conditioner 2 to the car 1, 5 is a return duct for sending air from the car to the intake duct 3, 6 is an outside air duct for sending air from the hoistway to the intake duct 3, and 7 is a return duct 5 And a motor damper that switches between the outside air duct 6 and
8 is a car door of the car 1, 9 is a hall, and 10 is a hatch door of the hall 9.

FIG. 2 is a circuit diagram for operating the present invention. 11 is an operation switch of the air conditioner 2, 12 is an operation relay of the air conditioner 2, and 12a and 12b are air conditioner operation relays 1.
Reference numeral 2 is a normally open contact, and 13 is a door closing detection switch that is closed when the car door 8 is closed.

The motor damper 7 operates so as to open the return duct 5 and close the outside air duct 6 when its operating circuit is energized, and opens the outside air duct 6 when the operating circuit is deenergized to return the return duct. 5 is closed.

Now, when the air conditioner operation switch 11 is turned on, the air conditioner operation relay 12 is energized and its contact 12a.
Is closed and the air conditioner 2 operates. At the same time, contact 1
When 2b is also closed and the car door 8 is closed, the door closing detection switch 13 is closed and the motor damper 7 is energized so that the return duct 5 is open and the outside air duct 6 is closed. It is in a state. Therefore, the car door 8
When the door is closed, the air flow forms an air circulation circuit in a closed space that follows the route of the return duct 5 → the intake duct 3 → the air conditioner 2 → the blower duct 4 → the car 1 → the return duct 5. A lean air conditioning system is constructed.

Next, if the car door 8 and the hatch door 10 are closed when the elevator responds to a call in the hall 9 in the above-mentioned state, the door closing detection switch 13 is opened and the motor damper 7 is deenergized. As a result, the outside air duct 6 is opened and the return duct 5 is closed instead. Therefore, the air flow when the car door 8 is in the open state follows the route of the outside air duct 6 → the intake duct 3 → the air conditioner 2 → the blower duct 4 → the car 1 → the hall 9. Unlike the above-mentioned air circulation circuit, these are in a state in which the cool air from the air conditioner 2 is pushed into the car 1 and the atmospheric pressure of the car 1 is changed to the landing 9
Since it becomes higher than the outside, the warm air can be prevented from flowing into the car 1 from the hall 9 due to the respective temperature differences.

After that, when the car door 8 and the hatch door 10 are closed by departure or the like, the door closing detection switch is closed and the motor damper 7 is urged again to perform the above-mentioned operation.

When the air conditioner 2 is not operated or a power failure occurs, the air conditioner operation relay 12 is deenergized and the contact 12b is also opened, so that the motor damper 7 is deenergized and even if the car door 8 Outside air duct 6 even when the door is closed
Is operated to supply fresh air to the car 1.

[0016]

As described above, according to the present invention, the equipment installed on the car can be constituted by the outside air duct and the motor damper in addition to the ordinary air conditioner, so that the space can be saved. In addition, since there is no noise other than a normal air conditioner during operation, it is possible to provide an air conditioner in the elevator car that can prevent inflow of warm air when the car door is opened, which is low in noise.

[Brief description of drawings]

FIG. 1 is an external view showing an embodiment of an elevator car air conditioner of the present invention.

FIG. 2 is a circuit diagram for explaining the operation of the present invention.

[Explanation of symbols]

 1 Car 2 Air conditioner 3 Intake duct 4 Blower duct 5 Return duct 6 Outside air duct 7 Motor damper 8 Car door 9 Hall 10 Hatch door 11 Air conditioner operation switch 12 Air conditioner operation relay 12a, 12b Normally open contact of air conditioner operation relay 13 Door closing detection switch

Claims (1)

[Claims] 1. A car air conditioner for an elevator, comprising an air conditioner installed on a car of an elevator, for air-conditioning a car by the air conditioner, and a duct for sucking air in the car to the air conditioner. And a duct for sucking air in the hoistway, and a switching device for switching air sucked by the air conditioner from a duct sucking air in the car or a duct sucking air from the hoistway. Air conditioner inside the elevator car.