Denso Corporation

Yukihiko Takeda

Teruyuki Hotta

Keiichi Yoshii

Hiroyuki Hayashi

Atsushi Inaba

Yoshinori Ichishi

Mitsuyo Oomura

Shigeji Ohishi

Tetsuya Itou

Kenichi Fujiwara

An accumulator includes a tank, a desiccant, a suction pipe. The tank is configured to separate a refrigerant flowing therein into a gas-phase refrigerant and a liquid-phase refrigerant, store the liquid-phase refrigerant in the tank, and discharge the gas-phase refrigerant toward a suction side of a compressor. The desiccant is accommodated in a container and removing moisture in the refrigerant. The suction pipe is provided inside the tank and having a suction port through which the gas-phase refrigerant is sucked into the suction pipe. The desiccant is provided inside the suction pipe. According to this accumulator, a bumping due to the desiccant and an increase in size of the tank can be suppressed.

Accumulator, and refrigeration cycle

In an integration valve, a body, in which a vapor-liquid separating space is provided, includes a fixed throttle decompressing liquid-phase refrigerant, a liquid-phase refrigerant side valve body member opening or closing a liquid-phase refrigerant passage, and a vapor-phase refrigerant side valve body member opening or closing a vapor-phase refrigerant passage. Further, the vapor-phase refrigerant side valve body member is configured by a differential pressure regulating valve operated based on a pressure difference between a refrigerant pressure at a side of the vapor-phase refrigerant passage and a refrigerant pressure at a side of the liquid-phase refrigerant passage. The vapor-phase refrigerant side valve body member is movable when the liquid-phase refrigerant side valve body member is moved by a solenoid. Therefore, a cycle configuration of a heat pump cycle configuring a gas injection cycle can be simplified.

Integration valve and heat pump cycle

An accumulator is disposed in a refrigerant circuit at a position on the suction side of a compressor, separates the gas and liquid phases of the refrigerant, and contains the liquid refrigerant. The accumulator comprises: a pressure container () having an inner space (S) formed therein; a refrigerant inlet opening () provided in the pressure container; a refrigerant outlet opening (); a conduction pipe () for conducting a refrigerant within the pressure container to the outlet opening; and a gas-liquid separation means () provided with a separation plate () provided within the pressure container so as to face the inlet opening and so as to expand substantially perpendicularly to the direction of the line of flow at the inlet opening. The gas-liquid separation means has, in the region of the separation plate which faces the inlet opening, a mountain-shaped protrusion () having a crest () and a sloped surface (), the crest () protruding toward the inlet opening.

Accumulator

An air conditioner for a vehicle includes a vapor compression refrigeration cycle switchable between a heat pump cycle and a cooler cycle, a heat core configured to heat air to be blown into a vehicle compartment by using coolant of an engine of the vehicle as a heat source, and a controller configured to control operation of the vapor compression refrigeration cycle. The controller controls the vapor compression refrigeration cycle to be operated as the cooler cycle so as to perform a defrosting control of the outdoor heat exchanger, and outputs an operation request signal to the engine, when the controller determines that the outdoor heat exchanger is frosted.

Air conditioner for vehicle with heat pump cycle

A vapor-liquid separating space is provided in a body. The body houses a fixed throttle-decompressing liquid-phase refrigerant, and an integration valve member selectively opening or closing a liquid-phase refrigerant passage and a vapor-phase refrigerant passage. The integration valve member is moved by a stepping motor connected to the integration valve member via a shaft. Accordingly, a cycle configuration of a heat pump cycle working as a gas injection cycle can be simplified.

Integration valve

A cooling circuit of a cooling apparatus for a fuel cell comprises a compressor for compressing a gaseous refrigerant, an external heat exchanger arranged on the downstream side of the compressor and for liquefying the compressed refrigerant, a pressure-reducing means arranged on the downstream side of the external heat exchanger, and an accumulator for storing the refrigerant which cools a fuel cell stack main body. The stack main body is connected to the cooling circuit between the pressure-reducing means and the accumulator and a four-way valve is arranged between the compressor and the external heat exchanger, and between the stack main body and the accumulator in the cooling circuit, and the four-way valve introduces the refrigerant from the compressor to the external heat exchanger during the cooling operation, and introduces it to the stack main body during the warming-up operation.

Growing community of inventors

Aichi-gun, Japan

Yukihiko Takeda