CN107709216B - Elevator with a movable elevator car - Google Patents
Elevator with a movable elevator car Download PDFInfo
- Publication number
- CN107709216B CN107709216B CN201580081246.9A CN201580081246A CN107709216B CN 107709216 B CN107709216 B CN 107709216B CN 201580081246 A CN201580081246 A CN 201580081246A CN 107709216 B CN107709216 B CN 107709216B
- Authority
- CN
- China
- Prior art keywords
- car
- intake
- housing
- air volume
- air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/02—Control systems without regulation, i.e. without retroactive action
- B66B1/06—Control systems without regulation, i.e. without retroactive action electric
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/02—Cages, i.e. cars
Landscapes
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Cage And Drive Apparatuses For Elevators (AREA)
- Elevator Control (AREA)
Abstract
Provided is an elevator which reduces noise by using an active noise control device, improves the installation and maintenance workability of an air pressure adjusting device, and can improve the riding comfort of passengers. The elevator is provided with: a blower (11) having an air inlet (11a) and an air outlet (11 b); an intake/exhaust air volume adjusting device (12) configured by arranging an air volume adjusting plate (18) in a housing (17) in a swingable manner, the intake/exhaust air volume adjusting plate adjusting the intake/exhaust air volume; ducts (13, 14, 15) having one ends connected to an indoor intake/exhaust port, the intake port, and the exhaust port of the car, respectively, and the other ends connected to the housing; a microphone (21) disposed within the housing; a controller (22) that performs active noise control processing on the detection signal of the microphone and generates an inverted signal; and a speaker (23) that is disposed in the housing, receives the inverted signal, and oscillates a sound wave in phase opposition to the sound detected by the microphone into the housing.
Description
Technical Field
The present invention relates to an elevator including an air pressure adjusting device for adjusting air pressure in a car, and more particularly, to a silencer for reducing noise generated by a blower of the air pressure adjusting device.
Background
A conventional air pressure adjusting device for an elevator includes: a blower having an air inlet and an air outlet; a plurality of ducts, one end of each of which is connected to the car room, the air inlet, and the air outlet; an intake/exhaust air volume adjusting means connected to the other ends of the plurality of ducts for adjusting the intake/exhaust air volume of the air in the car chamber by changing the air volume of the air flowing from the exhaust port to the intake port while bypassing the car chamber; and a control means for controlling the intake/exhaust air volume adjusting means to adjust the air pressure in the car chamber to a set air pressure (see, for example, patent document 1).
Documents of the prior art
Patent document
Patent document 1: japanese patent No. 5289461
Disclosure of Invention
Problems to be solved by the invention
The conventional air pressure adjusting device for an elevator drives a blower to change the air volume of air flowing from an exhaust port to an air inlet port while bypassing a car chamber, thereby adjusting the air pressure of the car chamber to a set air pressure.
Therefore, as a measure for reducing the noise generated by the blower, it is conceivable to provide a sound absorbing material or a muffler in the duct, for example. However, since the installation of the sound absorbing material or the muffler increases the size of the duct, it is difficult to secure a duct installation space at the upper part or the lower part of the car, and the weight of the duct increases, so that there is a new problem that the workability of installation or maintenance of the air pressure adjusting device is reduced.
The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an elevator that reduces noise using an active noise control device, suppresses an increase in size and weight of an air pressure adjusting device, improves workability in installation and maintenance of the air pressure adjusting device, and effectively reduces noise generated by a blower, thereby improving riding comfort for passengers.
Means for solving the problems
The elevator of the invention is provided with: a car disposed in a hoistway so as to be able to ascend and descend; a blower having an air inlet and an air outlet; an intake/exhaust air volume adjusting device having a casing and an air volume adjusting plate disposed in the casing so as to be capable of swinging, the air volume adjusting plate being swung to adjust an intake/exhaust air volume; a duct having one end connected to an indoor intake/exhaust port, the intake port, and the exhaust port of the car, and the other end connected to the housing; a microphone disposed in the housing and detecting sound passing through the housing; a controller that performs active noise control processing on a detection signal of the microphone to generate an inverted signal; and a speaker disposed in the housing, to which an inverted signal generated by the controller is input, and which oscillates a sound wave in an inverted phase to a sound detected by the microphone into the housing.
Effects of the invention
According to the present invention, the microphone detects sound passing through the case, the controller generates a reverse phase signal based on a detection signal of the microphone, and the speaker oscillates a sound wave in reverse phase to the sound detected by the microphone into the case. Therefore, the sound in the case is cancelled by the sound waves oscillated from the speaker and is not propagated into the car, and the riding comfort of the passenger is improved.
Further, since it is not necessary to provide a suction material or a muffler in the duct, an increase in size or weight of the intake/exhaust air volume adjusting device is suppressed, and workability in installation or maintenance of the air pressure adjusting device is improved.
Drawings
Fig. 1 is a schematic diagram showing the structure of an elevator according to embodiment 1 of the present invention.
Fig. 2 is a perspective view showing the periphery of an elevator air pressure adjusting device according to embodiment 1 of the present invention.
Fig. 3 is a diagram showing an operation of the air pressure adjusting device when the maximum volume of air is supplied into the car 3 of the elevator according to embodiment 1 of the present invention.
Fig. 4 is a diagram showing an operation of the air pressure adjusting device when air having an air volume smaller than the maximum air volume is supplied into the car 3 of the elevator according to embodiment 1 of the present invention.
Fig. 5 is a diagram showing an operation of the air pressure adjusting device when air is not supplied into and discharged from the car 3 of the elevator according to embodiment 1 of the present invention.
Fig. 6 is a diagram showing the operation of the air pressure adjusting device when the air in the car 3 of the elevator according to embodiment 1 of the present invention is exhausted at the maximum air volume.
Fig. 7 is a diagram showing an operation of the air pressure adjusting device when air in the car 3 of the elevator according to embodiment 1 of the present invention is exhausted at an air volume smaller than the maximum air volume.
Fig. 8 is a schematic diagram showing the structure of an elevator according to embodiment 2 of the present invention.
Detailed Description
Embodiment mode 1
Fig. 1 is a schematic diagram showing the structure of an elevator according to embodiment 1 of the present invention, and fig. 2 is a perspective view showing the periphery of an air pressure adjusting device of an elevator according to embodiment 1 of the present invention.
In fig. 1 and 2, an elevator includes: a hoisting machine 2 disposed in an upper portion of the hoistway 1; a box-shaped car 3 and a counterweight 4 that move up and down in the hoistway 1; an air pressure adjusting device 10 disposed at a lower portion of the car 3 and adjusting air pressure in the car 3; and a muffler assembly 20.
The car 3 and the counterweight 4 are coupled to a rope 5 wound around a sheave of the hoisting machine 2, and can be raised and lowered in the hoistway 1 by driving the hoisting machine 2. Further, an indoor intake/exhaust port 3a for taking in and exhausting air in the car 3 is formed in the lower surface of the car 3. A doorway 7 through which passengers get on and off the elevator is formed in the front surface of the car 3. The door 6 is attached to the car 3 so as to be able to open and close the doorway 7 with a gap of several mm from the outer wall surface of the car 3. The elastic member 8 formed in a hollow ring shape is disposed in the gap between the car 3 and the door 6. The elastic member 8 is connected to the vicinity of an exhaust port 11b of a blower 11, which will be described later, via a pipe 9.
The air pressure adjusting device 10 includes: a blower 11 having an air inlet 11a and an air outlet 11 b; an intake/exhaust air volume adjusting device 12; and ducts 13, 14, and 15, one end of which is connected to the indoor intake/exhaust port 3a of the car 3 and the intake port 11a and the exhaust port 11b of the blower 11, respectively, and the other end of which is connected to the intake/exhaust airflow rate adjusting device 12, and the air pressure adjusting device 10 is disposed at the lower portion of the car 3. The blower 11 is disposed on the installation table 16.
The intake/exhaust air volume adjusting device 12 includes: a housing 17 to which the ducts 13, 14, 15 are connected and which has an opening 17a communicating with the outside; an air volume adjusting plate 18 provided in the casing 17 so as to be swingable about a rotary shaft 18 a; and a motor 19 that drives the airflow adjustment plate 18 to swing. The housing 17 is made in a rectangular parallelepiped. The ducts 14 and 15 are connected to the facing surfaces of the housing 17 on which the opening 17a is not formed. The duct 13 is formed on a surface of the housing 17 facing the surface on which the opening 17a is formed. The rotation shaft 18a is disposed perpendicular to the surface of the housing 17 to which the ducts 13, 14, and 15 are not connected and on which the opening 17a is not formed. The connection ports of the housing 17 and the pipes 14 and 15 are formed in a rectangular shape. The airflow rate adjustment plate 18 is disposed in the casing 17 so that both ends thereof enter the ducts 14 and 15.
In the intake/exhaust air volume adjusting device 12 configured as described above, the casing 17 is separated into: a 1 st space communicating with the car 3 via a duct 13; and a 2 nd space communicating with the outside via the opening portion 17 a. The airflow rate adjustment plate 18 is swingable between the following positions: a 1 st rotation position in which the 1 st space communicates only with the exhaust port 11b via the duct 15 and the 2 nd space communicates only with the intake port 11a via the duct 14; and a 2 nd rotation position in which the 1 st space communicates only with the intake port 11a via the duct 14, and the 2 nd space communicates only with the exhaust port 11b via the duct 15.
The muffler device 20 includes: a microphone 21 attached to an inner wall surface of the casing 17, disposed outside a swing range of the air volume adjustment plate 18, and detecting noise in the casing 17; a controller 22 attached to an outer wall surface of the casing 17, for performing active noise control processing on a detection signal of the microphone 21 to generate an inverted signal; and a speaker 23 attached to an inner wall surface of the casing 17, disposed outside a swing range of the air volume adjustment plate 18, and configured to oscillate a sound wave in reverse phase to the noise detected by the microphone 21 into the casing 17 by receiving the reverse phase signal generated by the controller 22.
In the elevator configured as described above, the hoisting machine 2 is driven, and the car 3 is raised and lowered in the hoistway 1. The inverter device 31 controls the elevating speed of the car 3 by changing the rotation speed of the hoisting machine 2 in accordance with a signal from the elevator control device 30. Further, the car interior air pressure control device 32 transmits a control signal to the motor 19, which is controlled so that the rotation angle of the motor 19 becomes the rotation angle corresponding to the ascending/descending stroke of the car 3, in accordance with a signal from the elevator control device 30. The blower 11 is driven, and the intake air volume and the exhaust air volume in the car 3 are adjusted as described later.
Next, the basic operation of the air pressure adjusting device 10 of the elevator will be described with reference to fig. 3 to 7. In addition, the arrows in fig. 3 to 7 indicate the flow of wind.
Fig. 3 is a diagram showing an operation when the maximum air volume is supplied into the car 3. As shown in fig. 3, the air volume adjustment plate 18 is rotated by the motor 19 so that the exhaust port 11b of the blower 11 communicates with the indoor intake/exhaust port 3a of the car 3, the intake port 11a of the blower 11 communicates with the opening 17a of the casing 17, and the intake port 11a does not communicate with the exhaust port 11b, thereby forming the 1 st space and the 2 nd space in the casing 17. In this state, the outside air sucked into the case 17 through the opening 17a flows into the intake port 11a through the duct 14. The air sucked through the intake port 11a is discharged from the exhaust port 11b, and is sent into the car 3 through the duct 15, the casing 17, and the duct 13 from the indoor intake/exhaust port 3 a. Thereby, the air pressure inside the car 3 becomes positive with respect to the air pressure outside the car 3.
Fig. 4 is a diagram showing an operation when air having an air volume smaller than the maximum air volume is supplied into the car 3. As shown in fig. 4, the airflow rate adjustment plate 18 is held in a state slightly rotated counterclockwise from the position shown in fig. 3. In this state, the flow conductance of the flow path that communicates the 1 st space with the exhaust port 11b is larger than the flow conductance of the flow path that communicates the 1 st space with the intake port 11a, and the flow conductance of the flow path that communicates the 2 nd space with the intake port 11a is larger than the flow conductance of the flow path that communicates the 2 nd space with the exhaust port 11 b. Therefore, the air discharged from the exhaust port 11b of the blower 11 and sent into the 1 st space through the duct 15 is sent into the car 3 through the duct 13 from the indoor intake/exhaust port 3a, bypasses the car 3, and flows toward the blower 11 through the duct 14 from the intake port 11 a. This reduces the amount of air flowing from the blower 11 into the car 3 as compared with the case of fig. 3.
Fig. 5 is a diagram showing an operation when air in the car 3 is not taken in and exhausted. As shown in fig. 5, the airflow rate adjustment plate 18 is rotated counterclockwise from the position shown in fig. 4, and is held in a horizontal state. The air pressure adjusting device 10 determines the air volume of the blower 11 and the sectional area and length of the duct 13 so that the air pressure at the connection portion of the duct 13 and the housing 17 is equal to the air pressure in the car 3 when the air volume adjusting plate 18 is horizontally fixed. Therefore, the total volume of air discharged from the exhaust port 11b of the blower 11 flows through the casing 17 to the duct 14, and flows from the intake port 11a to the blower 11. Accordingly, air circulates only through the blower 11, the duct 15, the casing 17, and the duct 14, and air in the car 3 is not taken in and exhausted, so that the air pressure in the car 3 does not change.
Fig. 6 is a diagram showing an operation when the air in the car 3 is exhausted at the maximum air volume. As shown in fig. 6, the air volume adjustment plate 18 is rotated by the motor 19 so that the exhaust port 11b of the blower 11 communicates with the opening 17a of the housing 17, the intake port 11a of the blower 11 communicates with the indoor intake/exhaust port 3a of the car 3, and the intake port 11a does not communicate with the exhaust port 11b, thereby forming the 1 st space and the 2 nd space in the housing 17. In this state, air in the car 3 is sucked into the blower 11 from the air inlet 11a through the duct 13, the casing 17, and the duct 14. The air sucked from the air inlet 11a is discharged from the air outlet 11b, passes through the duct 15 and the housing 17, and is discharged from the opening 17a to the outside. Thereby, the air pressure inside the car 3 becomes negative with respect to the air pressure outside the car 3.
Fig. 7 is a diagram showing an operation when the air in the car 3 is exhausted at an air volume smaller than the maximum air volume. As shown in fig. 7, the airflow rate adjustment plate 18 is held in a state slightly rotated clockwise from the position shown in fig. 6. In this state, the flow conductance of the flow path that communicates the 1 st space with the exhaust port 11b is smaller than the flow conductance of the flow path that communicates the 1 st space with the intake port 11a, and the flow conductance of the flow path that communicates the 2 nd space with the intake port 11a is smaller than the flow conductance of the flow path that communicates the 2 nd space with the exhaust port 11 b. Therefore, not only the air in the car 3 but also a part of the air discharged from the exhaust port 11b of the blower 11 flows from the intake port 11a to the blower 11 through the duct 14. This reduces the volume of air discharged from the car 3 as compared with the case of fig. 6.
In this way, the airflow rate adjusting plate 18 is swung to continuously change the conductance of the airflow path that communicates the 1 st space and the 2 nd space with the intake port 11a and the exhaust port 11b of the blower 11, respectively, and change the airflow rate of the air that bypasses the inside of the car 3 and flows directly from the exhaust port 11b of the blower 11 to the intake port 11a, thereby switching between the intake of the external air into the car 3 and the discharge of the air inside the car 3 to the outside, and arbitrarily adjusting the intake airflow rate and the exhaust airflow rate to the inside of the car 3.
Here, the air pressure outside the car 3 changes with the change in the descending speed (ascending speed) of the car 3. In addition, when the air pressure in the car 3 is not adjusted, the air pressure in the car 3 also changes in accordance with the change in the descending speed (ascending speed) of the car 3, and changes in the same manner as the external air pressure, which gives passengers a sense of discomfort. Therefore, it is necessary to adjust the air pressure in the car 3 to a preset pressure corresponding to a change in the descending speed (ascending speed) of the car 3, thereby reducing the discomfort of the passengers.
Therefore, the elevator control device 30 calculates the descending speed (ascending speed) of the car 3 and outputs the calculated speed to the car interior air pressure control device 32. The car interior air pressure control device 32 calculates a rotation angle of the motor 19 based on the input information of the descending speed (ascending speed) of the car 3, and transmits a control signal to the motor 19, and the rotation angle of the motor 19 can obtain an intake air volume or an exhaust air volume for the interior of the car 3, which allows the air pressure in the car 3 to reach a preset air pressure corresponding to a change in the descending speed (ascending speed) of the car 3. Thus, the intake air volume or the exhaust air volume in the car 3 is adjusted in accordance with a change in the descending speed (ascending speed) of the car 3, and the pressure in the car 3 is adjusted to an air pressure set in accordance with a change in the descending speed (ascending speed) of the car 3, thereby reducing the discomfort of the passengers.
In addition, since the blower 11 is driven to adjust the intake air volume and the exhaust air volume with respect to the interior of the car 3, noise is generated. The noise generated by the blower 11 is detected by the microphone 21. The controller 22 performs active noise control processing on the detection signal of the microphone 21 to generate an inverted signal. Sound waves having a phase opposite to that of the noise detected by the microphone 21 are oscillated from the speaker 23 into the housing 17. This cancels the noise generated by the blower 11 and the sound oscillated from the speaker 23, thereby reducing the noise. Therefore, the noise generated by the blower is prevented from propagating into the car 3 through the duct 13 and giving a sense of discomfort to the passenger, and the riding comfort of the passenger is improved.
Further, a part of the air discharged from the blower 11 is sent to the elastic member 8 via the pipe 9. Thereby, the elastic member 8 expands, the gap between the car 3 and the door 6 is closed, and the car 3 is in a sealed state.
As described above, according to embodiment 1, the noise generated by the blower 11 is suppressed using the muffler device 20 based on the active noise control function, and therefore, the riding comfort of the passenger can be improved. Further, since the duct 13 does not need to be provided with a sound absorbing material or a muffler, the duct 13 is prevented from being large in size, the installation space of the air pressure adjusting device 10 in the lower portion of the car 3 can be easily secured, and the increase in weight of the air pressure adjusting device 10 is prevented, thereby improving workability of installation or maintenance of the air pressure adjusting device 10. Further, since the muffler device 20 is disposed in the housing 17, the outer shape, length, and weight of the duct 13 can be reduced, and the workability of installation and maintenance of the air pressure adjusting device 10 can be improved.
In embodiment 1, the microphone 21 and the speaker 23 are disposed in the 2 nd space of the casing 17, but if it is considered to cancel sound propagated into the car 3 through the duct 13, the microphone 21 and the speaker 23 are preferably disposed in the 1 st space of the casing 17.
Fig. 8 is a schematic diagram showing the structure of an elevator according to embodiment 2 of the present invention.
In fig. 8, the microphone 21 and the speaker 23 are attached to the surface of the air volume adjusting plate 18 on the 1 st space side and are disposed in the casing 17, and the controller 22 is attached to the inner wall surface of the casing 17 and is disposed outside the swinging region of the air volume adjusting plate 18.
The other configuration is the same as that of embodiment 1.
Therefore, the same effects as those of embodiment 1 are obtained also in embodiment 2.
According to embodiment 2, since the microphone 21 and the speaker 23 are attached to the air volume adjustment plate 18, the housing 17 can be made smaller than in embodiment 1 in which the microphone 21 and the speaker 23 are disposed outside the movable range of the air volume adjustment plate 18 in the housing 17, and the air pressure adjustment device 10 can be made smaller.
In embodiment 2, the controller 22 is attached to the inner wall surface of the housing 17, but the controller 22 may be attached to the outer wall surface of the housing 17.
In the above embodiments, the air pressure adjusting device 10 and the muffler device 20 are disposed at the lower portion of the car 3, but the air pressure adjusting device 10 and the muffler device 20 may be disposed at the upper portion of the car 3.
In the above embodiments, the opening 17a is formed in the lower surface of the car 3, but the opening 17a may be formed in the upper surface or the side surface of the car 3.
In each of the above embodiments, the elastic member 9 is disposed in the gap between the car 3 and the door 6, but the elastic member 9 may be disposed in the gap between the wall, the ceiling, the floor, and the like of the car 3.
In the above embodiments, the noise generated by the blower 11 is muffled by the muffler device 20, but the sound muffled by the muffler device 20 is not limited to the noise generated by the blower 11, and may be sound that enters the car 3 through the inside of the casing 17, for example, sound that is generated in the hoistway 1 and enters the car 3 through the casing 17.
Claims (3)
1. An elevator, comprising:
a car disposed in a hoistway so as to be able to ascend and descend;
a blower having an air inlet and an air outlet;
an intake/exhaust air volume adjusting device having a casing and an air volume adjusting plate disposed in the casing so as to be capable of swinging, the air volume adjusting plate being swung to adjust an intake/exhaust air volume;
a duct having one end connected to an indoor intake/exhaust port, the intake port, and the exhaust port of the car, and the other end connected to the housing;
a microphone disposed in the housing and detecting sound passing through the housing;
a controller that performs active noise control processing on a detection signal of the microphone to generate an inverted signal; and
a speaker disposed in the housing, the speaker being inputted with the inverted signal generated by the controller and oscillating a sound wave in an inverted phase to the sound detected by the microphone into the housing,
the microphone and the speaker are directly mounted on a surface of the air volume adjusting plate facing the side of the indoor air intake/exhaust port.
2. The elevator according to claim 1,
the controller is mounted to an outer wall surface of the housing.
3. The elevator according to claim 1,
the controller is disposed outside a swing region of the air volume adjustment plate in the casing.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2015/068987 WO2017002229A1 (en) | 2015-07-01 | 2015-07-01 | Elevator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107709216A CN107709216A (en) | 2018-02-16 |
| CN107709216B true CN107709216B (en) | 2020-02-21 |
Family
ID=57607963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580081246.9A Active CN107709216B (en) | 2015-07-01 | 2015-07-01 | Elevator with a movable elevator car |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6366839B2 (en) |
| CN (1) | CN107709216B (en) |
| WO (1) | WO2017002229A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7123000B2 (en) * | 2019-04-24 | 2022-08-22 | 株式会社日立製作所 | Elevator control system and elevator control method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3231875B2 (en) * | 1993-02-16 | 2001-11-26 | 株式会社東芝 | Active silencer for elevators |
| CN101014524A (en) * | 2004-06-30 | 2007-08-08 | 奥蒂斯电梯公司 | Elevator car roof with dissipated ventilation channel |
| CN102171126A (en) * | 2008-11-12 | 2011-08-31 | 三菱电机株式会社 | Elevator device |
| CN202130969U (en) * | 2011-05-17 | 2012-02-01 | 广东联合通用电梯有限公司 | Elevator ventilation device |
| CN103231969A (en) * | 2013-03-07 | 2013-08-07 | 西子奥的斯电梯有限公司 | Low-noise elevator car internal ventilation and air deflecting system |
| CN104220357A (en) * | 2012-04-11 | 2014-12-17 | 三菱电机株式会社 | Elevator device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0611166A (en) * | 1992-06-25 | 1994-01-21 | Matsushita Electric Works Ltd | Discharging device |
| JPH09258742A (en) * | 1996-03-25 | 1997-10-03 | Yamaha Corp | Muffler |
| JP2005171838A (en) * | 2003-12-10 | 2005-06-30 | Matsushita Electric Ind Co Ltd | Exhaust fan |
| JP6259989B2 (en) * | 2013-09-03 | 2018-01-17 | パナソニックＩｐマネジメント株式会社 | Active silencer and ventilator |
| JP6368106B2 (en) * | 2014-02-20 | 2018-08-01 | 株式会社日立製作所 | Elevator device and noise reduction method |
| CN204880432U (en) * | 2015-08-26 | 2015-12-16 | 富士电梯（合肥）有限公司 | Elevator car air purification system |
-
2015
- 2015-07-01 CN CN201580081246.9A patent/CN107709216B/en active Active
- 2015-07-01 JP JP2017525743A patent/JP6366839B2/en active Active
- 2015-07-01 WO PCT/JP2015/068987 patent/WO2017002229A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3231875B2 (en) * | 1993-02-16 | 2001-11-26 | 株式会社東芝 | Active silencer for elevators |
| CN101014524A (en) * | 2004-06-30 | 2007-08-08 | 奥蒂斯电梯公司 | Elevator car roof with dissipated ventilation channel |
| CN102171126A (en) * | 2008-11-12 | 2011-08-31 | 三菱电机株式会社 | Elevator device |
| CN202130969U (en) * | 2011-05-17 | 2012-02-01 | 广东联合通用电梯有限公司 | Elevator ventilation device |
| CN104220357A (en) * | 2012-04-11 | 2014-12-17 | 三菱电机株式会社 | Elevator device |
| CN103231969A (en) * | 2013-03-07 | 2013-08-07 | 西子奥的斯电梯有限公司 | Low-noise elevator car internal ventilation and air deflecting system |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2017002229A1 (en) | 2017-01-05 |
| JPWO2017002229A1 (en) | 2017-09-28 |
| CN107709216A (en) | 2018-02-16 |
| JP6366839B2 (en) | 2018-08-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5289461B2 (en) | Elevator equipment | |
| US8500525B2 (en) | Elevator ceiling ventilation cavity | |
| JP2896284B2 (en) | Active noise control system for elevator car ventilation duct | |
| CN107709216B (en) | Elevator with a movable elevator car | |
| JP2010256896A (en) | Active silencing device and air blower using the same | |
| JP5147508B2 (en) | Ventilation blower | |
| JP5885172B2 (en) | Elevator equipment | |
| JP2017068231A (en) | Blower | |
| JP4570198B2 (en) | Elevator cab | |
| JPH0680357A (en) | Ventilation device for elevator car | |
| JP6503552B2 (en) | Active silencer and blower provided with the same | |
| JP2010265099A (en) | Ventilator of elevator cage | |
| JP2011219215A (en) | Elevator device | |
| JP5486439B2 (en) | Room pressure control system | |
| JP3783523B2 (en) | Elevator equipment | |
| JP6191005B2 (en) | Ventilation fan | |
| JP6289220B2 (en) | Elevator equipment | |
| JP6026141B2 (en) | Air conditioner for vehicles | |
| JP6543807B2 (en) | Ventilation system | |
| JP6236628B2 (en) | Active silencer | |
| JP2007283800A (en) | Blower unit | |
| JP2017110861A (en) | Ventilator | |
| JP6086876B2 (en) | elevator | |
| JP5974267B2 (en) | Blower with silencer box | |
| JP2017227144A (en) | Blower |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |