Hitachi-johnson Controls Air Conditioning, Inc.

Hitachi High-tech Corporation

Johnson Controls-hitachi Air Conditioning Technology (hong Kong) Limited

Shigeyuki Sasaki

Sachio Sekiya

Takenori Okusa

Masanori Ishikawa

Eiji Ishii

Wataru Sato

Nobuyuki Isoshima

Masanao Kotani

Koki Yokoyama

Ryoichi Takafuji

Daiwa Sato

Michiharu Watanabe

Temperature uniformity of a reaction liquid in a plurality of reaction containers of an automatic analysis device is maintained by a heat block. A strip-shaped heater heats the heat block, and is wound and attached on an outer circumference of the heat block so that both end regions of the strip-shaped heater are adjacent to each other. The strip-shaped heater includes a heat generating resistor that is heated by applying an electric current, an insulating film sandwiching the heat generating resistor, and first and second electrical feed lines that are attached to both end portions of the heat generating resistor and supply power to the heat generating resistor. The width of the heat generating resistor in both end regions of the strip-shaped heater is formed to be narrower than the width of the heat generating resistor in the other region thereof.

Automatic analysis device

A heat exchanger is provided which has: multiple flat heat transfer pipes configured such that refrigerant for heat exchange with air flowing inside; and a fin having a heat exchange surface between adjacent ones of the heat transfer pipes, wherein the multiple heat transfer pipes are arranged such that flat portions of the heat transfer pipes face each other, the fin has one end and other end in an air flow direction, and a first rib formed vertically above the flat portion, and the first rib has an extension portion extending along the flat portion, and an enlarged portion configured such that a distance to the flat portion gradually increases from the extension portion in a direction of one end side.

Heat exchanger and air conditioner

An air conditioning apparatus suppresses an increase in power consumption associated with a reduction in start-stop frequency of a compressor. The air conditioning apparatus includes an outdoor unit equipped with a compressor and a plurality of indoor units connected with the outdoor unit and has a control device that performs thermo-off and thermo-on control such that a suction air temperature of the indoor unit falls within a predetermined temperature range with a set temperature defined as a reference. The control device detects the suction air temperatures of the indoor units, and, in a case where a sum total of air conditioning capacities of the indoor units, the suction air temperatures of which are between the set temperature and the thermo-off temperature, is at least a predetermined value, makes at least one indoor unit, the suction air temperatures of which are between the set temperature and the thermo-off temperature, forcedly thermo-off.

Air conditioning apparatus

A refrigerant distributor includes an inlet pipe, a header pipe to which the inlet pipe has been connected and a plurality of refrigerant pipes connected to one end side of the header pipe which is opposite to the side that the inlet pipe is connected, below the inlet pipe in a vertical direction, and is configured such that a refrigerant which has flown into the header pipe through the inlet pipe is distributed into the plurality of refrigerant pipes. The header pipe is arranged such that a vertical upper side of the header pipe is inclined toward the one end side that the refrigerant pipes are connected. Thereby, it is possible to stably distribute the refrigerant to each refrigerant pipe while suppressing an increase in cost under flow rate conditions ranging from a rated operation condition to a low rotating speed operation condition.

Refrigerant distributor and refrigeration cycle device equipped with the refrigerant distributor

Provided is an air heat exchanger capable of preventing an increase in ventilation resistance and a decrease in heat exchange efficiency due to condensation water generated on surfaces of heat transfer fins, without increasing thermal resistance of flat tubes and the heat transfer fins, and preventing scattering of water droplets downwind from the heat transfer fins. In the air heat exchanger including a plurality of flat tubesand heat transfer finsprovided between the flat tubesand on which air is blown, the flat tubesinclude water draining grooveson side surfaces on which the heat transfer finsare provided and the heat transfer finsinclude water guiding groovescommunicating with the water draining grooves. At least a groove wallon the upwind side of an air blowing directionamong groove walls forming the water guiding groovesis provided from a position of the upwind side from the water draining groovesto the water draining grooves. The water guiding groovesextend toward the water draining groovesalong the groove wallon the upwind side and an area of a cross section perpendicular to an extension direction decreases toward the water draining grooves

Air heat exchanger

Growing community of inventors

Tokyo, Japan

Shigeyuki Sasaki