JP2013119459A - Ventilator of elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ventilator of an elevator enabling the easy installation of an electrostatic atomization device and maintenance work from above an elevator car, and capable of effectively cleaning the inside of the elevator car.SOLUTION: The ventilator is arranged on the elevator car for introducing air from the outside of the elevator car to the inside thereof. The ventilator includes an air supply port arranged at the upper side of the ventilator for taking in the air from the outside of the elevator car, a blowout port for sending out the air taken in from the air supply port to the inside of the elevator car, an air blowing fan arranged between the air supply port and the blowout port in the ventilator and constituted of a cross flow blower for generating an air flow directed from the air supply port to the blowout port, and the electrostatic atomization device generating and discharging charged droplets. The electrostatic atomization device is arranged at a position on the side of the air supply port relative to a rotary shaft of the air blowing fan, and moreover, radially distant from the rotary shaft by a prescribed distance longer than a radius of the air blowing fan.

Description

  The present invention relates to an elevator ventilation device.

  Some conventional elevators are provided with an electrostatic atomizer that discharges mist-like charged water droplets in a passenger car. And in this electrostatic atomizing device, a dedicated atomizing fan is provided to radiate heat of the Peltier element built in the electrostatic atomizing device, or a car instead of the atomizing fan. A device using an air conditioning fan is conventionally known. Moreover, what controls the operation | movement of an electrostatic atomizer according to the opening / closing time of the door of an elevator is also known conventionally (for example, refer patent document 1).

JP 2008-184322 A

  However, in the prior art disclosed in Patent Document 1, it is necessary to provide a dedicated atomizing fan, and there is a problem that installation in an existing elevator or maintenance work is difficult due to poor installation. In addition, when a car air conditioning fan is used instead of the atomizing fan, it is necessary to install an electrostatic atomizing device in the air path from the air conditioner to the car. There is a similar problem that maintenance work is difficult.

  In addition, in order to control the opening and closing operation of the door in conjunction with the electrostatic atomizing device, it is necessary to connect the control device for controlling the opening and closing of the elevator door and the electrostatic atomizing device with a communication line, etc. There is also a problem that the work is complicated.

  The present invention has been made to solve such a problem, and an elevator that can easily install and maintain an electrostatic atomizer from the top of a car and can effectively clean the inside of the car. To get the ventilation equipment.

  In the elevator ventilator according to the present invention, the ventilator is provided on the elevator car and for introducing air from the outside to the inside of the elevator car, and is provided above the ventilator. An air supply port for taking in air from the outside of the car, an air outlet for sending the air taken in from the air supply port into the car, the air supply port and the air blower in the ventilation device A blower fan comprising a cross-flow blower provided between the outlet and creating an airflow from the air supply port toward the blowout port, and an electrostatic atomizer that generates and discharges charged water droplets. The electrostatic atomizer is located on the air inlet side with respect to the rotational axis of the blower fan, and is spaced apart from the rotary shaft in a radial direction by a predetermined distance longer than the radius of the blower fan. And the configuration placed in That.

  In the elevator ventilation apparatus according to the present invention, the installation and maintenance work of the electrostatic atomizer can be easily performed from the top of the car, and the inside of the car can be effectively cleaned.

It is sectional drawing which shows typically the structure of the passenger car provided with the elevator ventilation apparatus which concerns on Embodiment 1 of this invention. It is sectional drawing to which the principal part of the car shown in FIG. 1 which concerns on Embodiment 1 of this invention was expanded. It is sectional drawing to which the electrostatic atomizer with which the ventilation apparatus shown in FIG. 2 which concerns on Embodiment 1 of this invention is provided was expanded. It is a figure explaining the structure of the Peltier device with which the electrostatic atomizer shown in FIG. 3 which concerns on Embodiment 1 of this invention is provided. It is a disassembled perspective view of the electrode part of the electrostatic atomizer shown in FIG. 3 which concerns on Embodiment 1 of this invention.

  The present invention will be described with reference to the accompanying drawings. Throughout the drawings, the same reference numerals indicate the same or corresponding parts, and redundant description thereof will be simplified or omitted as appropriate.

Embodiment 1 FIG.
FIGS. 1 to 5 relate to Embodiment 1 of the present invention. FIG. 1 is a cross-sectional view schematically showing a configuration of a car provided with an elevator ventilation device, and FIG. 2 is a car shown in FIG. FIG. 3 is an enlarged cross-sectional view of the electrostatic atomizer provided in the ventilation device shown in FIG. 2, and FIG. 4 shows the structure of the Peltier element provided in the electrostatic atomizer shown in FIG. FIG. 5 and FIG. 5 are exploded perspective views of electrode portions of the electrostatic atomizer shown in FIG.

  In FIG. 1, reference numeral 1 denotes an elevator car. On the ceiling of the car room of the car 1, an illumination box 2 is mounted for accommodating lighting for illuminating the car room. On the upper surface (on the car) of the car 1, for example, an electrical equipment 3 for performing lighting control of the lighting in the lighting box 2, and a handrail 4 used when a maintenance worker or the like works on the car are installed. Yes. Further, a ventilation device 5 for introducing air from the outside of the car 1 to the inside of the car 1 is provided on the upper surface of the car 1.

  The configuration of the ventilation device 5 is shown in FIG. The ventilation device 5 is provided on the upper side of the ventilation device 5, and an air supply port 5 a that is an opening for taking in air from the outside of the car 1, and air taken from the air supply port 5 a into the car 1. And an air outlet 5b which is an opening for sending out. Here, the air outlet 5b is formed between the lighting box 2 in the ceiling part of the car room of the car 1 and the car room wall.

  In the ventilator 5, a blower fan 6 comprising a cross flow blower such as a line flow fan is provided. Since this blower fan 6 is a cross flow blower, the flow direction of the air flow created by this blower fan 6 is such that it crosses the rotating shaft 6 a of the blower fan 6. And this air blower fan 6 produces the airflow as shown by the arrow in FIG. 2 which goes to the blower outlet 5b which leads from the air supply opening 5a into the passenger car 1 inside.

  Further, the ventilator 5 is equipped with an electrostatic atomizer 7 for generating mist-like fine charged water droplets. This electrostatic atomizer 7 is upstream of the air flow with respect to the rotation shaft 6a of the blower fan 6, and is a predetermined distance longer than the radius of the blower fan 6 in the radial direction (centrifugal direction) from the rotation shaft 6a. It is arranged only at a position apart. Furthermore, the position where the electrostatic atomizer 7 is arranged is the direction from 12 o'clock to 3 o'clock of the watch as viewed from the rotating shaft 6a of the blower fan 6 toward the paper surface of FIG.

  The structure of this electrostatic atomizer 7 is shown in FIG. The electrostatic atomizer 7 includes a Peltier element 8, a discharge electrode 9 and a counter electrode 10, and an upper case 11 and a lower case 12 for holding the discharge electrode 9 and the counter electrode 10 in a predetermined positional relationship. .

  The Peltier element 8 is for capturing water from the surrounding air and supplying the discharge electrode 9 with water. When the Peltier element 8 is energized by a low-voltage power supply 13 that is a power source for the Peltier element 8, the temperature on one end side (heat generation side) increases and the temperature on the other end side (cooling side) decreases. In the Peltier element 8, a heat radiating fin 8 a is attached to the one end side where the temperature rises due to this energization, and condensing fins 8 b are attached to the other end side where the temperature drops due to the energization. (Fig. 4).

  The radiating fins 8a of the Peltier element 8 are constituted by a plurality of flat plate-like bodies that protrude toward the air flow path side in the ventilation device 5 and are provided at regular intervals. Each plate-like body of the radiating fin 8a is provided substantially parallel to the air flow on the upstream side of the blower fan 6, and the air flow passes through the gaps between the plate-like bodies. It is designed not to be disturbed.

  When energized by the low-voltage power supply 13, the temperature of the condensing fins 8b of the Peltier element 8 decreases. Then, moisture contained in the air around the Peltier element 8 is cooled and condensed by the condensing fins 8b and adheres as water droplets to the surface of the condensing fins 8b. The condensation fins 8b are surface-treated so that attached water droplets can be easily dropped. Moisture in the air captured by the condensing fins 8b of the Peltier element 8 is condensed and drops into water droplets by gravity below the condensing fins 8b.

  On the other hand, the heat radiation fins 8 a of the Peltier element 8 are heated by energization of the low-voltage power supply 13. As described above, the radiating fins 8 a protrude toward the air flow path side in the ventilation device 5 and are provided substantially parallel to the air flow on the upstream side of the blower fan 6. For this reason, the heat generated in the radiating fins 8 a is efficiently radiated from the radiating fins 8 a using the air flow generated by the blower fan 6 of the ventilation device 5.

  The condensing fins 8b are also composed of a plurality of plate-like bodies provided in a substantially parallel manner at regular intervals, like the heat radiating fins 8a. This is mainly because the amount of water condensed on the surface of the condensation fins 8b is increased by increasing the surface area where the condensation fins 8b are in contact with the surrounding air.

  Below the condensing fin 8b of the Peltier element 8, a discharge electrode 9 is disposed. The discharge electrode 9 has a protruding portion 9a having a sharp tip on one end side. A flat plate portion 9 b is formed on the other end side of the discharge electrode 9 to receive water droplets dropped from the condensation fins 8 b of the Peltier element 8.

  The material of the discharge electrode 9 is a metal foam (metal porous body) such as titanium. The porous metal body has a pore diameter of 50 to 150 μm and a porosity of 70 to 80%. By setting the pore diameter and the porosity as described above, water dripped from the condensing fins 8b to the flat plate portion 9b spreads over the entire metal, and the entire discharge electrode 9 (particularly the protruding portion 9a) can be impregnated with water. Become.

  The counter electrode 10 is formed of a metal plate provided with a substantially circular hole 10a. The material of the counter electrode 10 may be any material having conductivity. Here, for example, stainless steel is used. The counter electrode 10 is disposed on the protrusion 9a side of the discharge electrode 9 so as to face the discharge electrode 9 with a predetermined interval from the tip of the protrusion 9a. At this time, the discharge electrode 9 is disposed so that the center of the circular hole 10 a of the counter electrode 10 is positioned on the extension line of the tip of the protrusion 9 a of the discharge electrode 9.

  The discharge electrode 9 and the counter electrode 10 are held by the upper case 11 and the lower case 12 in the positional relationship as described above. The discharge electrode 9 is connected to a power feeding portion 15 made of metal such as stainless steel. A high-voltage power supply 14 is electrically connected through the power supply unit 15. The high-voltage power supply 14 applies a positive or negative DC voltage of a high voltage (3 to 7 kV with respect to the ground voltage) to the discharge electrode 9. The counter electrode 10 is grounded, and the high voltage (3 to 7 kV) is applied between the discharge electrode 9 and the counter electrode 10 by the high voltage power source 14.

  A suction mesh 16 for removing foreign substances in the air introduced from the outside of the car 1 is attached to the air supply port 5 a of the ventilation device 5. And the electrostatic atomizer 7 is arrange | positioned in the location which pinched | sucked the suction mesh 16 with respect to the air flow path in the ventilator 5. FIG.

  An extension line connecting the tip of the protrusion 9 a of the discharge electrode 9 and the center of the circular hole 10 a of the counter electrode 10 is upstream of the blower fan 6 in the ventilation device 5 (that is, the air supply port 5 a side). It arrange | positions so that it may cross | intersect substantially perpendicular | vertical with respect to a flow.

  In the electrostatic atomizer 7 configured as described above, water condensed and trapped on the surface of the condensation fin 8b of the Peltier element 8 is dropped onto the discharge electrode 9 and impregnated into the protrusion 9a of the discharge electrode 9. Has been. In this state, when a positive or negative DC voltage of 3 to 7 kV is applied between the discharge electrode 9 and the counter electrode 10 by the high-voltage power supply 14, the water held at the tip of the discharge electrode 9 is placed between the counter electrode 10 and the water. Coulomb force acts on the surface, and the surface of the water rises locally to produce a Taylor cone. When the Coulomb force exceeds the surface tension of water, the Taylor cone breaks up and becomes charged water droplets having a diameter of several nanometers and is released into the air. Thus, mist-shaped charged water droplets are generated and discharged from the electrostatic atomizer 7.

  In addition, the number of the protrusions 9a included in the discharge electrode 9 may be one or plural. By providing a plurality of protrusions 9a on the discharge electrode 9, it is possible to increase the amount of charged water droplets released according to the number of protrusions 9a provided.

  Here, as described above, the electrostatic atomizer 7 is on the upstream side (air supply port 5a side) of the air flow with respect to the rotation shaft 6a of the blower fan 6, and is radially (centrifugal) from the rotation shaft 6a. In the direction) at a position separated by a predetermined distance longer than the radius of the blower fan 6. Therefore, the discharge electrode 9 and the counter electrode 10 of the electrostatic atomizer 7 are also on the air supply port 5a side with respect to the rotation shaft 6a of the blower fan 6, and as described above, the protrusion 9a of the discharge electrode 9 An extension line connecting the tip of the electrode and the center of the circular hole 10a of the counter electrode 10 is substantially orthogonal to the air flow.

  Therefore, the discharge direction of the charged water droplets discharged from the electrostatic atomizer 7 is substantially perpendicular to the air flow. The air flow created by the blower fan 6 in the ventilation device 5 is directed from the upper right to the lower left toward the paper surface as indicated by arrows in FIGS. 2 and 3. The charged water droplets emitted from the electrostatic atomizer 7 are blown into the car 1 from the air outlet 5b without passing through the inside of the blower fan 6 in this air flow.

  When the charged water droplet collides with the blower fan 6, it disappears and does not reach the blower outlet 5 b, so it is necessary to blow on the air flow without passing through the blower fan 6. With the configuration as described above, this can be realized, and the disappearance of the charged water droplets discharged from the electrostatic atomizer 7 can be suppressed, and the charged water droplets can be sufficiently supplied into the car 1.

  By discharging fine charged water droplets in the car 1 as described above, it acts on bacteria, fungi, allergens, viruses, etc. floating in the car 1 and inactivates them. Further, it penetrates into the clothing of the passengers in the car 1, the fibers in the carpets and wallpaper materials in the car 1, and deodorizes the passenger's body odor, cigarette odor, and odor attached to the elevator car.

  Further, in the electrostatic atomizer 7 configured as described above, the operations of the low-voltage power supply 13 and the high-voltage power supply 14 are configured to be interlocked with the operation state of the blower fan 6 of the ventilation device 5. Specifically, first, in a state where the blower fan 6 is stopped, both energization from the low voltage power supply 13 to the Peltier element 8 and energization from the high voltage power supply 14 to the discharge electrode 9 are also stopped. When the blower fan 6 operates, both energization from the low voltage power supply 13 to the Peltier element 8 and energization from the high voltage power supply 14 to the discharge electrode 9 are started, and discharge of charged water droplets from the electrostatic atomizer 7 is started. The

  Further, when the rotational speed of the blower fan 6 in operation is variable, the magnitude of the voltage input from the low-voltage power supply 13 to the Peltier element 8 is also changed according to the rotational speed of the blower fan 6. To be controlled.

  Specifically, for example, when the operation mode of the blower fan 6 includes two modes of strong (high rotational speed) and weak (low rotational speed), when the operational mode of the blower fan 6 is strong, the low-voltage power supply 13 Lowers the input voltage to the Peltier element 8 relatively, and when the operation mode of the blower fan 6 is weak, the low voltage power source 13 relatively increases the input voltage to the Peltier element 8. At this time, the voltage applied to the discharge electrode 9 by the high voltage power source 14 is constant.

  Generally, when the operation mode of the blower fan 6 is strengthened, the relative humidity in summer is often high. Under conditions where the amount of moisture contained in the air is large, the amount of water droplets generated in the condensation fins 8b increases even at the same lowering temperature. Therefore, when the amount of water dripped from the condensation fin 8b to the discharge electrode 9 exceeds the water absorption capacity of the discharge electrode 9, it is necessary to treat the excess water as drain water.

  Therefore, when the operation mode of the blower fan 6 is strong, it is assumed that the relative humidity is high, and the input voltage to the Peltier element 8 is relatively lowered, thereby generating water droplets in the condensation fins 8b. It is possible to reduce the capacity and suppress the generation of drain water.

  In contrast, when the operation mode of the blower fan 6 is weakened, the relative humidity in winter is often low. Under the condition that the amount of moisture contained in the air is small, the amount of water droplets generated in the condensation fins 8b is reduced even at the same lowering temperature.

  Therefore, when the operation mode of the blower fan 6 is weak, it is assumed that the relative humidity is low, and the input voltage to the Peltier element 8 is relatively increased, thereby generating water droplets in the condensation fins 8b. The capacity is increased so that an amount sufficient for generating charged water droplets by the discharge electrode 9 and the counter electrode 10 can be supplied.

  The elevator ventilator configured as described above is provided on the elevator car and is used to introduce air into the interior from the outside of the elevator car, and is provided above the ventilator. Between the air supply port for taking air from the outside of the car, the air outlet for sending the air taken from the air supply port into the car, and the air supply port and the air outlet in the ventilator And a blower fan composed of a cross flow blower for creating an air flow from the air supply port to the blower outlet, and an electrostatic atomizer for generating and discharging charged water droplets. The electrostatic atomizer is disposed on the air supply port side with respect to the rotation axis of the blower fan and at a position away from the rotation axis in a radial direction by a predetermined distance longer than the radius of the blower fan. .

  For this reason, installation and maintenance work of the electrostatic atomizer can be easily performed from the top of the car, and the inside of the car can be effectively cleaned.

  In addition, by controlling the operation of the electrostatic atomizer in conjunction with the operation of the blower fan close to the electrostatic atomizer, it is possible to efficiently generate charged water droplets according to the situation. In addition, the wiring for the control can be completed with a relatively short distance between the electrostatic atomizer and the blower fan, and the installation property and maintainability are good.

DESCRIPTION OF SYMBOLS 1 Car 2 Lighting box 3 Electrical equipment 4 Handrail 5 Ventilation device 5a Air supply port 5b Air outlet 6 Air blower fan 6a Rotating shaft 7 Electrostatic atomizer 8 Peltier element 8a Heat radiation fin 8b Condensing fin 9 Discharge electrode 9a Protrusion 9b Flat plate Part 10 Counter electrode 10a Circular hole 11 Upper case 12 Lower case 13 Low voltage power source 14 High voltage power source 15 Power supply unit 16 Suction mesh

In the elevator ventilator according to the present invention, the ventilator is provided on the elevator car and for introducing air from the outside to the inside of the elevator car, and is provided above the ventilator. An air inlet for taking in air from the outside of the car, a suction mesh provided in the air inlet, an air outlet for sending out air taken in from the air inlet into the car, and A ventilation fan, which is provided between the air supply port and the air outlet in the ventilation device, and is composed of a cross-flow fan for creating an air flow from the air supply port to the air outlet, and generates charged water droplets An electrostatic atomizer that discharges the air flow , and the electrostatic atomizer is upstream of the air flow with respect to a rotation shaft of the blower fan, and the air blows in a radial direction from the rotation shaft. Longer than fan radius Predetermined distance, and a configuration that is disposed on the opposite side of the position sandwiching the suction mesh with respect to the air flow in the ventilation system.

Claims (6)

A ventilation device provided on the elevator car for introducing air from the outside to the inside of the car,
An air supply port provided on an upper side of the ventilator for taking in air from the outside of the car;
An air outlet for sending out air taken in from the air supply opening into the car;
A blower fan that is provided between the air supply port and the air outlet in the ventilator and includes a cross-flow fan for creating an air flow from the air supply port toward the air outlet,
An electrostatic atomizer that generates and discharges charged water droplets, and
The electrostatic atomizer is on the air inlet side with respect to the rotation axis of the blower fan, and is disposed at a position away from the rotation axis by a predetermined distance longer than the radius of the blower fan in the radial direction. Elevator ventilator characterized by that. The electrostatic atomizer is
A counter electrode having a hole;
A discharge electrode having a protrusion protruding from the tip toward the hole, and having a predetermined voltage applied to the counter electrode;
The elevator ventilator according to claim 1, wherein a line obtained by extending a tip of the protrusion of the discharge electrode in a projecting direction is substantially orthogonal to the air flow in the ventilator. . Comprising a Peltier element provided in the electrostatic atomizer,
The Peltier element includes a heat dissipating fin provided on the heat generation side and a condensation fin provided on the cooling side,
The heat dissipating fins include a plurality of plate-like bodies that protrude toward the flow path side of the air flow in the ventilator, are provided at regular intervals, and are arranged substantially parallel to the air flow. The elevator ventilation apparatus according to any one of claims 1 and 2. The discharge electrode includes a first power source that applies a predetermined voltage to the counter electrode,
The elevator ventilation apparatus according to claim 2, wherein the first power source operates in conjunction with an operation state of the blower fan. A second power source for applying a voltage to the Peltier element;
The elevator ventilation apparatus according to claim 3, wherein the second power source operates in conjunction with an operation state of the blower fan.   The elevator ventilation apparatus according to claim 5, wherein the second power source lowers the input voltage to the Peltier element as the rotational speed of the blower fan increases.

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