Matsushita Electric Industrial Co., Ltd.

Panasonic Corporation

Yasuhiro Umekage

Hajime Miyata

Yukio Nagaoka

Osamu Eguchi

Masahiko Hashimoto

Yuji Fujii

Yuji Nakabayashi

Akihisa Adachi

Kenzo Ohji

Fumikazu Shiba

Kenichi Kamon

Shuji Abe

Shigeru Shirai

Shigeru Iwanaga

Kazushige Nakamura

Mitsuyuki Furubayashi

Koji Oka

Keiko Yasui

Yoshinori Inui

Shinichi Sakai

Makoto Mihara

Kazuhiro Kuroyama

Hisashi Morikawa

Tadashi Miki

Youichi Itou

Yoshiaki Watanabe

Hiroaki Kurihara

Masamitsu Kondou

Kunio Nakamura

Masami Fukumoto

If determination is erroneous in appliance determination according to the instantaneous flow rate output from a flow rate measurement unit, a flow rate measurement apparatus registers it as an unknown appliance, rechecks the flow rate of the unknown appliance, and makes it possible to enhance the accuracy of the appliance determination. The apparatus has a flow rate measurement unit, a flow rate information storage unitfor storing the flow rate value of the flow rate measurement unit, a computation unitfor finding a difference value between the flow rate values output from the flow rate measurement unit, an appliance registration storage unit, an appliance determination unitfor determining an appliance, and an unknown appliance registration unitfor registering information according to which the appliance cannot be determined.

Flow rate measurement apparatus and gas supply system

An indoor dust collecting system includes an air conditioner having an indoor unit that generates an air current, a dust collector, and a controller for controlling the air current from the indoor unit. A moving body detector is provided to detect a moving body such as, for example, a person, a pet, a cleaning robot, and the like. The air current from the indoor unit is controlled by the controller based on the position of the indoor unit, the position of a spot of occurrence of dust detected by the moving body detector, and the position of the dust collector such that the air current from the indoor unit reaches the dust collector via the spot of occurrence of dust in order for the dust collector to effectively suck the dust.

Dust collecting system

Object of the present invention is to measure the quantity of a gas flowing through a gas meter and accurately calculate, on a per-appliance basis, the quantity of used gas in each time during which a gas appliance connected to a downstream point is used, without involvement of a waveform pattern. A flow rate measuring apparatus () has a flow rate measurement unit that measures a flow rate at given time intervals; an appliance determination unit that calculates a flow difference between flow rates acquired at two arbitrary times by measuring the use of an appliance connected to a downstream point with reference to the flow rate measurement unit, thereby determining an operating appliance; and an appliance flow rate calculation unit that calculates the appliance-specific usage flow rate by switching a calculation method according to the number, types, combinations, and priority levels of currently-operating gas appliances that are results of determination made by the appliance determination unit.

Flow rate measuring apparatus and program thereof

A fluid measurement apparatus capable of accurately determining an activated appliance is provided. A flow measurement apparatushas a flow measurement unitthat measures an amount of fluid flowing through a passageway, a determination zone storage unitthat allocates and stores a flow measured by the flow measurement unitinto determination zones classified by combination of a plurality of conditions; a grouping unitthat groups determination zones according to appliances to be used on the basis of determination-zone-specific storage values stored in the determination zone storage unitand that registers the grouped determination zones; and an integration unitthat integrates a flow value for each of the determination zones registered by the grouping unit. Thus, a flow is integrated for each determination zone grouped according to an appliance. An appliance is determined by reference to a database including the integrated data.

Flow measurement apparatus and program thereof, flow measurement method and fluid supply system

A heat exchanger comprises a substantially pillar sheathed heater, a substantially cylindrical case, and a spiral spring. The sheathed heater is accommodated in the case. The spring is provided so as to be wound around an outer peripheral surface of the sheathed heater. Thus, a spiral flow path is formed among an outer peripheral surface of the sheathed heater, an inner peripheral surface of the case, and the spring. The spring functions as a flow velocity conversion mechanism, a turbulent flow generation mechanism, a flow direction conversion mechanism, and an impurity removal mechanism. A water inlet and a water outlet are respectively arranged at positions eccentric from a central axis of the case on a side surface of the case.

Heat exchanger

The present invention provides a flow rate measurement device for measuring a volume of gas flowing through a gas supply system in which a plurality of appliances are connected. The flow rate measurement device according to the second embodiment comprises a flow rate sensor configured to detect a gas flow flowing through the gas supply system and a differentiator configured to differentiate the detected gas flow. A memory is provided in which profiles of gas consumption by appliances are storable in relation to identities of the appliances. The flow rate measurement device according to the present invention also comprises a first profile finder which is responsive to the differentiated gas flow to search for a profile from the stored profiles which corresponds to the detected gas flow. The device further comprises a second profile finder which is responsive to a failure by the first profile finder to find the corresponding profile from the stored profiles to analyze the detected gas flow to thereby determine an identity of at least one of the plurality of appliances.

Flow rate measurement device

A flow rate measuring device has a flow rate measurement unit, an appliance registering unit, a calculating unit, a determining unit, a first appliance identifying unit, and a second appliance identifying unit. The appliance registering unit stores at least first gas flow rate variation profiles on activation of respective gas appliances coupled to a flow channel, and second gas flow rate variation profiles based on the control specific to the respective gas appliances. The first appliance identifying unit identifies which gas appliance is activated based on the first gas flow rate variation profiles on activation. When a determining unit detects a stop of any of gas appliances, the second appliance identifying unit identifies a gas appliance in continuous use by using the second gas flow rate variation profiles based on the control specific to the respective gas appliances.

Flow rate measuring device, and gas supply system employing it, method for specifying gas appliance

Heat exchanger and washing apparatus comprising the same

A flow rate measurement device () connected to a household gas supply pipe includes: a flow rate sensor () which measures a flow rate at predetermined time intervals; a computing unit () which differentiate the measured flow rate; a library (); and an judging unit () which compares the differentiated flow rate against an activation threshold value stored in the library () and determines a change of the operation state of an appliance connected downstream of the flow rate sensor ().

A washing water inlet for receiving washing water is provided on an upper surface at one end of a case main body in a fluid heating device, and a washing water outlet for feeding heated washing water to a pump is provided on an upper surface at the other end of the case main body. A linear sheathed heater is arranged so as to penetrate the case main body. A spring is spirally wound around an outer peripheral surface of the sheathed heater. An outer peripheral surface of the sheathed heater, the spring, and an inner peripheral surface of the case main body form a flow path. The flow path is formed in a spiral shape with the length of the case main body used as its axis.

Fluid heating device and cleaning device using the same

An ultrasonic fluid measurement instrument is capable of highly accurate fluid measurement. A measurement part is provided forming a plurality of split channels partitioned by partition boards halfway across a fluid channel, and at least a pair of ultrasonic transmitter-receivers for transmitting ultrasonic waves into the fluid flowing through the split channels and receiving ultrasonic waves that have passed through the fluid. Further, an arithmetic unit calculates the flow velocity and/or flow volume of the fluid according to the propagation time of the ultrasonic waves. The measurement part further includes an approach channel for preliminarily rectifying the fluid flowing to the split channels.

Ultrasonic fluid measurement instrument having a plurality of split channels formed by partition boards

Ultrasonic type fluid measurement device

An ultrasonic flowmeter includes a transmission/reception means provided in a flow path for performing transmission/reception using a state change of fluid; repetition means for repeating the transmission/reception; time measurement means for measuring a time of propagation repeated by the repetition means; flow rate detection means for detecting a flow rate based on a value of the time measurement means; and number-of-times change means for changing to a predetermined number of repetition times. With such a structure, an influence caused by a variation of a flow can be suppressed by changing the number of repetition times so as to be suitable for a variation. As a result, reliable flow rate measurement with a high accuracy can be achieved.

Ultrasonic flowmeter

In accordance with one embodiment, a flow meter of the present invention includes: transmission/reception means provided in a flow path for performing transmission/reception using a state change of fluid; repetition means for repeating the transmission/reception; time measurement means for measuring a time of propagation repeated by the repetition means; flow rate detection means for detecting a flow rate based on a value of the time measurement means; and number-of-times change means for changing to a predetermined number of repetition times. With such a structure, an influence caused by a variation of a flow can be suppressed by changing the number of repetition times so as to be suitable for a variation. As a result, reliable flow rate measurement with a high accuracy can be achieved.

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Shiga, Japan

Yasuhiro Umekage