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1. US20100297928 - CONTROLS FOR VENTILATION AND EXHAUST DUCTS AND FANS

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[ EN ]

Claims

1- 41. (canceled)
42. A ventilation or exhaust apparatus comprising:
a fan assembly comprising a motor having an output shaft, and a fan mounted on the output shaft; and
a plurality of detectors for automatically controlling the operation of the fan assembly by controlling the operational speed of the fan assembly in accordance with the number, location or nature of the detectors that are activated.
43. A ventilation or exhaust apparatus as claimed in claim 42, wherein the motor and fan are within a shroud.
44. A ventilation or exhaust apparatus as claimed in claim 42, wherein the motor is a variable speed drive motor.
45. A ventilation or exhaust apparatus as claimed in claim 42, wherein the plurality of detectors comprises at least two detectors selected from a group consisting of a time sensor, a heat sensor, a temperature sensor, a gas sensor, and a fumes sensor.
46. A ventilation or exhaust apparatus as claimed in claim 45, wherein the plurality of detectors is arranged in groups.
47. A ventilation or exhaust apparatus as claimed in claim 45, wherein a number of detectors activated determines the fan assembly operational speed.
48. A ventilation or exhaust apparatus as claimed in claim 45, wherein a stage in a time sensor determines the fan assembly operational speed.
49. A ventilation or exhaust apparatus as claimed in claim 42, further comprising:
a valve assembly for placement in ducting of a ventilation or exhaust system, the valve assembly comprising:
a valve member for placement in the ducting for movement between a first position where the ducting is substantially open, and a second position where the ducting is substantially closed;
the valve member being adapted to move from the first position to the second position to at least one detection of a prescribed situation; and
the valve assembly being located at, adjacent or near an outlet end of the ducting.
50. A ventilation or exhaust apparatus as claimed in claim 49, wherein the valve member is sized and shaped to substantially close off an interior of the ducting.
51. A ventilation or exhaust apparatus as claimed in claim 49, wherein the prescribed situation may be the presence of one or more of smoke, fumes, gas, heat, noxious fumes, and fire, and the gas includes at least one of a cooking gas, carbon dioxide or carbon monoxide.
52. A ventilation or exhaust apparatus as claimed in claim 49 wherein the plurality of detectors comprises at least two detectors selected from a group consisting of a time sensor, a heat sensor, a temperature sensor, a gas sensor, and a fumes sensor.
53. A ventilation or exhaust apparatus as claimed in claim 52, wherein the plurality of detectors is arranged in groups.
54. A ventilation or exhaust apparatus as claimed in claim 53, wherein a number of detectors activated determines the fan assembly operational speed.
55. A ventilation or exhaust apparatus as claimed in claim 53, wherein a stage in a time detector determines the fan assembly operational speed.
56. A fan assembly for placement in ducting of a ventilation or exhaust system for an environment space, the fan assembly comprising:
a motor having an output shaft;
a fan mounted on the output shaft; and
a brake mounted for operation on the motor;
wherein the brake is operable for stopping rotation of the motor output shaft upon a detection of a prescribed situation by at least one detector in one or more of the environmental space and the ducting.
57. A fan assembly as claimed in claim 56, wherein the motor and fan are within a shroud.
58. A fan assembly as claimed in claim 56, wherein the motor is a variable speed drive motor and the brake comprises an electric brake component of the variable speed drive motor.
59. A fan assembly as claimed in claim 56, wherein the prescribed situation is the presence of one or more of smoke, fumes, gas, heat, noxious fumes and fire; and the gas includes at least one of a cooking gas, carbon dioxide or carbon monoxide.
60. A fan assembly as claimed in claim 56, wherein the at least one detector comprises at least one detector selected from a group consisting of a time sensor, a heat sensor, a temperature sensor, a gas sensor, and a fumes sensor.
61. A fan assembly as claimed in claim 56, wherein a plurality of sensors is arranged in groups.
62. A fan assembly as claimed in claim 56, wherein a number of sensors activated determines the fan assembly operational speed.
63. A fan assembly as claimed in claim 56, wherein a stage in a time sensor determines the fan assembly operational speed.
64. A fan assembly as claimed in claim 56, further comprising:
a plurality of detectors for automatically controlling the operation of the fan assembly by controlling the operational speed of the fan assembly in accordance with the number, location or nature of the detectors that are activated.
65. A fan assembly as claimed in claim 56, further comprising:
noxious fumes and fire; and the gas includes at least one of a cooking gas, carbon dioxide or carbon monoxide.
60. A fan assembly as claimed in claim 56, wherein the at least one detector comprises at least one detector selected from a group consisting of a time sensor, a heat sensor, a temperature sensor, a gas sensor, and a fumes sensor.
61. A fan assembly as claimed in claim 60, wherein a plurality of sensors is arranged in groups.
62. A fan assembly as claimed in claim 60, wherein a number of sensors activated determines the fan assembly operational speed.
63. A fan assembly as claimed in claim 60, wherein a stage in a time sensor determines the fan assembly operational speed.
64. A fan assembly as claimed in claim 56, further comprising:
a plurality of detectors for automatically controlling the operation of the fan assembly by controlling the operational speed of the fan assembly in accordance with the number, location or nature of the detectors that are activated.
65. A fan assembly as claimed in claim 56, further comprising:
a valve assembly for placement in ducting of a ventilation or exhaust system, the valve assembly comprising:
a valve member for placement in the ducting for movement between a first position where the ducting is substantially open, and a second position where the ducting is substantially closed;
the valve member being adapted to move from the first position to the second position to at least one detection of a prescribed situation; and
the valve assembly being located at, adjacent or near an outlet end of the ducting.
66. A fan assembly as claimed in claim 65, wherein the valve member is sized and shaped to substantially close off an interior of the ducting.
67. A fan assembly as claimed in claim 65, wherein the prescribed situation may be the presence of one or more of smoke, fumes, gas, heat, noxious fumes, and fire, and the gas includes at least one of a cooking gas, carbon dioxide or carbon monoxide.
68. A fan assembly as claimed in claim 65, further comprising:
the at least one detector comprises at least one detector selected from a group consisting of a time sensor, a heat sensor, a temperature sensor, a gas sensor, and a fumes sensor.
69. A fan assembly as claimed in claim 68, wherein a plurality of detectors is arranged in groups.
70. A fan assembly as claimed in claim 68, wherein a number of detectors activated determines the fan assembly operational speed.
71. A fan assembly as claimed in claim 68, wherein a stage in a time detector determines the fan assembly operational speed.
72. A fan assembly as claimed in claim 65, wherein the at least one detector comprises:
a plurality of detectors for automatically controlling the operation of the fan assembly by controlling the operational speed of the fan assembly in accordance with the number, location or nature of the detectors that are activated.
73. A valve assembly for placement in ducting of a ventilation or exhaust system, the valve assembly comprising:
a valve member for placement in the ducting for movement between a first position where the ducting is substantially open, and a second position where the ducting is substantially closed;
the valve member being adapted to move from the first position to the second position in response to the detection of at least one or more of smoke, fumes, gas, heat, noxious fumes and fire; and the gas includes at least one of a cooking gas, carbon dioxide or carbon monoxide;
the valve member being for location at, adjacent or near an outlet end of the ducting.
74. A valve assembly as claimed in claim 73, wherein the valve member is sized and shaped to substantially close off an interior of the ducting.
75. A valve assembly as claimed in claim 73, further comprising:
a detector for detecting the presence of one or more of: smoke, fumes, gas, heat and noxious fumes; and a control panel comprising a reset control for resetting the detector, and moving the valve member to the first position.
76. A valve assembly as defined in claim 75, wherein the detector comprises at least two detectors selected from the group consisting of a sensor, a heat sensor, a temperature sensor, a gas sensor, and a fumes sensor.
77. A valve assembly as defined in claim 76, further comprising at least one of:
a master on control for overriding a time sensor;
a master off control for overriding a time sensor; and
time controls for setting a plurality of preset times for the operation of the time sensor.