摘要:
A vacuum cleaner and method for determining the kind of floor surface being cleaned by a vacuum cleaner wherein dust amount per unit interval is detected and dust detection change patterns are analyzed for determining floor type. This analysis is based on the following assumptions: smooth and carpet surfaces can be distinguished by dust detection patterns for an interval of several seconds. On the smooth surface, almost all of the dust at one place is picked up during an early stage of the interval. On the other hand, on a carpet floor, dust is picked up continuously. On a new carpet, many piles detach during vacuuming. Thus, if dust detection is continuous over several seconds it may be assumed that, the carpet is a new carpet.
摘要:
A vacuum cleaner has a blower motor; a dust detector responsive to a sucked dust particle due to rotation of the blower motor for producing a dust detecting signal when each of the dust particles is detected passing a portion in a suction passage; counter responsive to the dust detection signal for counting the number of the dust interception particles for a given interval; and input power controller responsive to an output signal of the counter for controlling the input power of the blower motor by selecting an input power value from plural preset input power values in accordance with the number. Controlling input power may be performed in accordance with a pulse width indicative of the dust particle size or the counted number may be modified by pulse width. Another embodiment of the vacuum cleaner has plural light emitting diodes for indicating the number counted to show an operator uncleanliness of the floor. The controller includes a microprocessor which can control a thyristor provided in series with the blower motor directly. In a vacuum cleaner where the thyristor is located in the housing, the microprocessor may be located in a handle portion, and a D/A converter and a phase control circuit may be provided in the housing.
摘要:
A purifier to purify exhaust gas includes a case, a plurality of metal sheets disposed in the case, a catalyst held to each of the metal sheets, partition plates disposed between the respective metal sheets, a metallic pipe disposed piercing through the metal sheets, and a catalyst heater disposed in the metallic pipe. The plurality of metal sheets are arranged at predetermined intervals, and each of the metal sheets has at least one through-hole. The partition plates serve to partition the spaces between the respective metal sheets. The exhaust gas is circulated through the spaces between the respective metal sheets and then passes through the through-holes and is exhausted from the outlet of the case. In this way, it is possible to increase the number of metal sheets without increase of the pressure loss and to enlarge the outer diameter of same.
摘要:
A purifier to purify exhaust gas includes a case, a plurality of metal sheets disposed in the case, a catalyst held to each of the metal sheets, partition plates disposed between the respective metal sheets, a metallic pipe disposed piercing through the metal sheets, and a catalyst heater disposed in the metallic pipe. The plurality of metal sheets are arranged at predetermined intervals, and each of the metal sheets has at least one through-hole. The partition plates serve to partition the spaces between the respective metal sheets. The exhaust gas is circulated through the spaces between the respective metal sheets and then passes through the through-holes and is exhausted from the outlet of the case. In this way, it is possible to increase the number of metal sheets without increase of the pressure loss and to enlarge the outer diameter of same. As a result, the exhaust gas purifying capacity will be improved.
摘要:
A spiral separation membrane element includes a water collection tube; a separation membrane wound around the water collection tube, having a feed-side surface and a permeate-side surface, and including a band-shaped region on at least one end of the feed-side surface in an axial direction of the water collection tube; and a channel material fused to the band-shaped region.
摘要:
An electron beam welding method capable of restoring toughness even when high heat input welding is performed. The electron beam welding method comprises: forming a first weld bead (3) so as to include a groove (2) provided at the butt portions of two base materials (1), and forming a second weld bead (4) and a third weld bead (5) having a narrower width than the first weld bead (3), at predetermined positions displaced from the groove (2) and centered symmetrically about the butt portions so as to include a portion of the first weld bead (3), using a lower heat input than that used during formation of the first weld bead (3).
摘要:
A pattern forming method is provided for forming a pattern of a multilayer film including insulative films and electrically conductive films stacked together and having a hole formed therein on a substrate with the electrically conductive film being selectively accurately indented from an inner peripheral surface of the hole. The pattern forming method includes the steps of: alternately stacking at least two insulative films and at least two polysilicon films on a substrate to form a multilayer film including the at least two insulative films and the at least two polysilicon films; forming a hole extending through the at least two insulative films and the at least two polysilicon films in the multilayer film; and selectively etching the polysilicon films from a side wall of the hole through isotropic etching by feeding into the hole an etching gas prepared by diluting fluorine-containing halogen gas with an inert gas.
摘要:
A substrate treating method for treating substrates with a treating liquid includes a deionized water cleaning step for supplying deionized water from an injection pipe and cleaning the substrates inside a cleaning tank with deionized water, then a replacing step for injecting a solvent from a solvent injector and replacing the deionized water with the solvent, a separating and removing step for switching a channel to a branch pipe and causing a separator to remove the deionized water from the treating liquid, and an adsorbing and removing step for switching the channel to another branch pipe and causing a deionized water remover to adsorb and remove the deionized water from the treating liquid.
摘要:
The invention has its object to provide an exhaust emission control device which can be favorably mounted on a vehicle without causing relative twisting between a particulate filter and a selective reduction catalyst. In the exhaust emission control device in which a particulate filter and a selective reduction catalyst are housed by casings, respectively, and arranged side by side such that inlet ends of the filter and the catalyst are oriented to one and the same direction, an S-shaped communication passage being provided for introduction of the exhaust gas from an outlet end of the filter to an inlet end of the adjacent catalyst through antithetical turnabout, urea water being addible intermediately of the communication passage, the casings for the filter and catalyst are integrally restrained by rigid plates (restraining members).
摘要:
An information concealing label includes a label base and an adhesive layer on the back side thereof. The information concealing label is affixed by means of the adhesive layer onto an information writing section in which information to be concealed is written. The adhesive layer includes a strong adhesive portion positioned at the periphery of the label base and a weak adhesive portion positioned in the area inside the strong adhesive portion. The label base has a group of corrugated slits formed along the boundary between the weak adhesive portion and the strong adhesive portion. The weak adhesive portion of the label base can be peeled off the information writing section into an unsealed state with the strong adhesive portion adhering to the information writing section by cutting through the corrugated slits.