Abstract: The present invention discloses an isolation section suppressing shock wave forward transmission structure for a wave rotor combustor and a wave rotor combustor, and belongs to the new concept field of unsteady combustion. The isolation section suppressing shock wave forward transmission structure for a wave rotor combustor includes a wave rotor and a gas inlet port, and the wave rotor is provided with several wave rotor channels. When the wave rotor rotates, the several wave rotor channels communicate with the isolation section sleeve sequentially through the fan-shaped hole. The present invention suppresses reflected shock waves by changing a flow blockage ratio and a shape of the pneumatic valve to consume back transmission pressure, which is beneficial to a fuel intake process, so that steady working of the wave rotor combustor in a state of deviating from a design point can be implemented.

Abstract: The present invention discloses an isolation section suppressing shock wave forward transmission structure for a wave rotor combustor and a wave rotor combustor, and belongs to the new concept field of unsteady combustion. The isolation section suppressing shock wave forward transmission structure for a wave rotor combustor includes a wave rotor and a gas inlet port, and the wave rotor is provided with several wave rotor channels. When the wave rotor rotates, the several wave rotor channels communicate with the isolation section sleeve sequentially through the fan-shaped hole. The present invention suppresses reflected shock waves by changing a flow blockage ratio and a shape of the pneumatic valve to consume back transmission pressure, which is beneficial to a fuel intake process, so that steady working of the wave rotor combustor in a state of deviating from a design point can be implemented.

Abstract: A dispenser for dispensing a product, the dispenser comprising a base unit (2) into which a refill (1) containing the product is removably insertable in a fixed position. The refill has a taggant ink (12) on part of its external surface. The base has a light source (13) to illuminate the ink. The light source has a first wavelength and the taggant ink is arranged to cause the ink to emit light at a second different wavelength. A sensor (14) receives light emitted by the taggant ink upon illumination by the light source. A control circuit receives signal indicative of the wavelength of the detected light from the sensor, compares it with stored data, and prevents operation of a dispensing mechanism unless the refill is authentic.

Abstract: An arrangement for detecting toilet flushing by utilizing an acoustically-based motion detector in a simple amplifier circuit. The detector is in contact with the toilet bowl, which acts as a resonant system. Upon detection of such flushing, a subsequent event, such as a cleaning or disinfecting a toilet, ventilating the surrounding area or releasing deodorant into the area, may be triggered. The mechanically resonant system with the provided circuit is capable of separating frequencies from the frequency of the flushing water in a specific bowl design and provides a high degree of immunity to unwanted ambient frequencies. In addition, the system consumes low power and is suitable for battery power operation.

Abstract: A dispenser for dispensing a product, the dispenser comprising a base unit (2) into which a refill (1) containing the product is removably insertable in a fixed position. The refill has a taggant ink (12) on part of its external surface. The base has a light source (13) to illuminate the ink. The light source has a first wavelength and the ink is arranged to cause the ink to emit light at a second different wavelength. A sensor (14) receives light emitted by the ink upon illumination by the light source. A control circuit receives signal indicative of the wavelength of the detected light from the sensor, compares it with stored data, and prevents operation of a dispensing mechanism unless the refill is authentic.

Abstract: The present invention describes a device for evaporating a volatile liquid from a container having a wick. The device includes a housing, a motion sensor, a first electrical heating element, and at least one of: a second electrical heating element; a fan; a region of increased heating capacity within the first electrical heating element. In use, the motion sensor is operable to detect motion in the vicinity of the device and, on detecting motion, the device operates to activate at least one of a second electrical heating element; a fan; a region of increased heating capacity within the first electrical heating element. The present invention also describes a method for evaporating the volatile liquid and a kit of parts for the same.

Abstract: The present invention relates to a dispensing device for at least one air treatment agent comprising at least one airborne agent detector operable to detect airborne agents in the air; receiving means for receiving at least one source of air treatment agent; and control means for releasing an amount of at least one air treatment agent from a source thereof received in the receiving means when a current airborne agent level detected by the airborne agent detector deviates from a background airborne agent level detected by the airborne agent detector by more than a predetermined amount, wherein the background airborne agent level is calculated by the device. The present invention also relates to a method of dispensing at least one air treatment agent.

Abstract: The present invention describes a spraying device comprising: a housing adapted to receive a container of fluid; actuation means configured, in use, for periodic actuation of the container of fluid; motion sensor means; a controller in operable communication with said actuation means and said motion sensor means; wherein the actuation means is operable, in use, to actuate at a time interval of t1; and wherein the motion sensor means is operable, in use, to detect motion in the vicinity of the device and communicate any detection to the controller which causes the actuation means to actuate; and wherein subsequent detection of motion by the motion sensor is communicated to the controller which causes the actuation means to actuate at a time interval of t2; and wherein t2?t1. The present invention further describes a method of spraying fluid from a container.

Abstract: A seal assembly for a pressurised container 2 comprising a first seal portion 16 and a second seal portion 18. The first seal portion 16 is adapted to form a seal with an output section 14 of the pressurised container 2 and an end face 26 thereof, and the second seal portion 18 is adapted to form a seal with a side wall 28 of the output section 14.

Abstract: A dispenser for dispensing a product, the dispenser comprising a base unit (2) into which a refill (1) containing the product is removably insertable in a fixed position. The refill has a taggant ink (12) on part of its external surface. The base has a light source (13) to illuminate the ink. The light source has a first wavelength and the ink is arranged to cause the ink to emit light at a second different wavelength. A sensor (14) receives light emitted by the ink upon illumination by the light source. A control circuit receives signal indicative of the wavelength of the detected light from the sensor, compares it with stored data, and prevents operation of a dispensing mechanism unless the refill is authentic.

Abstract: An automatic toilet bowl treatment device, wherein said device comprises: a fluid reservoir, a pump means, a hanger means, and a fluid spray means wherein the entire device is configured so that it can be suspended from, preferably wholly suspended from, a part of a toilet bowl and in particular, a part of the toilet bowl rim. The device is used for the automatic treatment of a lavatory appliance, preferably a toilet bowl and especially preferably the interior surfaces of a toilet bowl which process comprises operating the device to provide a quantity of a treatment composition at periodic intervals to one or more interior surfaces of the lavatory appliance, and preferably to one or more of the interior surfaces of a toilet bowl.

Abstract: An arrangement for detecting toilet flushing by utilizing an acoustically-based motion detector in a simple amplifier circuit. The detector is in contact with the toilet bowl, which acts as a resonant system. Upon detection of such flushing, a subsequent event, such as a cleaning or disinfecting a toilet, ventilating the surrounding area or releasing deodorant into the area, may be triggered. The mechanically resonant system with the provided circuit is capable of separating frequencies from the frequency of the flushing water in a specific bowl design and provides a high degree of immunity to unwanted ambient frequencies. In addition, the system consumes low power and is suitable for battery power operation.

Abstract: An automatic toilet bowl treatment device, wherein said device comprises: a fluid reservoir, a pump means, a hanger means, and a fluid spray means wherein the entire device is configured so that it can be suspended from, preferably wholly suspended from, a part of a toilet bowl and in particular, a part of the toilet bowl rim.

Abstract: A sleeve (10) for a material container (14), the sleeve being adapted to receive a material container (14) therein, the sleeve also being adapted to be received in an opening of a corresponding material ejection device chassis (12) operable to control ejection of material from the material container (14), wherein the sleeve (10) includes a magnet (42) operable to activate an electromagnetic switch of the material ejection device chassis (12).