Matsushita Electric Industrial Co., Ltd.

Norio Yoshida

Minoru Fukumoto

Naomi Goto

Susumu Yamano

Makoto Yoshida

Yasufumi Kurahashi

Hideo Nishihata

Kunihiro Ukai

Takeshi Tomizawa

Tatsuo Fujita

Jiro Suzuki

Masahiko Makino

Yoshifumi Abe

Yutaka Yoshida

Yoshiyuki Morikawa

Minoru Kajitani

Akira Nakazawa

Katsuyuki Ohara

Teruo Nakagawa

Katsunori Makino

A closed compressor includes a compression mechanism contained in a closed vessel and a motor drive section for driving the compression mechanism. A compression mechanism holder is secured to the inner surface of the closed vessel to hold the compression mechanism within the closed vessel.

Closed compressor having a compression mechanism holder and method of assembling same

An automotive air conditioning apparatus 10 is provided which includes a forced water supply system 9 and a heat pump system 14. A controller 16 controls the temperature of a second heat exchanger 38 of the heat pump system 14 to a desired temperature based on a preset temperature. The controller 16 also controls the temperature of the water circulating through the heat exchanger 20 of the forced water supply system 9 to a temperature at which the quantity of heat exchange between the air heated by the second heat exchanger 38 to the desired temperature and the heat exchanger 20 of the forced water supply system is minimized. According to this air conditioning arrangement, the temperature of the vehicle interior can be promptly raised without any capability drop being caused and thus, the heating efficiency of the apparatus being well enhanced.

Automotive air conditioning apparatus

A hermetic electric compressor includes a motor unit having a stator coil and a compressor unit driven by the motor unit for compressing refrigerant gas. A temperature sensor is provided at the stator coil for monitoring a temperature of the stator coil. A control unit is further provided to control a rotational frequency or speed of the motor unit via the stator coil depending on the monitored temperature of the stator coil. The temperature sensor and the control unit are connected via a shielded cable or a twisted pair. The shielded cable or the twisted pair may be grounded via a capacitor. Further, a thermostat may also be provided at the stator coil and connected in series to the temperature sensor.

Hermetic electric compressor with improved temperature responsive motor

A connector 30 is integrated in a hermetic compressor 10. A flange block 48 is secured on the connector 30 by a screw 62. The connector 30 and the flange block 48 have through-holes 38 and 50, respectively, and a tube 54 is inserted into through-hole 50. A flange 58 is integrally formed in a peripheral surface of one end portion of the tube 54. Also, an elastic ring 60 is fitted near the flange 58. The flange 58 and the elastic ring 60 are positioned in enlarged diameter portions 40 and 42 formed in the connector 30 so that the ring 60 seals against the tube 54 and the connector 30. With this arrangement, simply by tightening the screw using a screwdriver, the tube can be securely connected with the container.

Hermetic compressor having an inlet port and/or an outlet port with a

In an inverter apparatus for converting a direct current to an intermittent current by a converter configured by parallel-connected plural pairs of serially-coupled switching elements, resistance loads are connected across output terminals of the converter and a positive terminal or a negative terminal of a direct current source, and a direct current output can be supplied to the resistance loads from the inverter apparatus by controlling the converter at a low frequency.

Inverter apparatus

An automotive vehicle such as, for example, an electric car is provided with a liquid heating and circulating apparatus for heating the interior of the vehicle body. The liquid heating and circulating apparatus is provided with a main tank containing liquid, a heater mounted in the main tank for heating the liquid, and a pump for circulating the liquid heated by the heater. The liquid heating and circulating apparatus is also provided with a water supply unit connected to the main tank and accommodating a pressure relief valve assembly, and an auxiliary tank connected to the water supply unit. The pressure relief valve assembly is operated according to predetermined pressures within the main tank to place the main tank in communication with the auxiliary tank.

Liquid heating and circulating apparatus for use in an automotive vehicle

A combustion apparatus has a fuel feed unit, a blower for supplying combustion air, a mixing unit of fuel and combustion air, a first catalyst provided downstream of the mixing unit, a first heat receiving unit adjacent to the first catalyst, a second catalyst with a large geometrical surface area than that of the first catalyst provided downstream in the flow direction of the first catalyst, an electric heater for heating the catalyst provided downstream of the second catalyst, an air permeable insulator provided downstream of the electric heater, and a second heat receiving unit provided downstream of the air permeable insulator, wherein power is supplied to the electric heater when starting combustion to heat the second catalyst over the reaction temperature of catalyst, a mixed gas of fuel and air is fed to start catalytic combustion of second catalyst, the downstream portion in flow direction of the first catalyst is heated over the reaction temperature of catalyst by the combustion heat of the second catalyst, and combustion is started by the first catalyst.

Combustion apparatus

A drive unit for driving an electrically-operated compressor mounted in an automotive vehicle is provided with a ventilation arrangement. The ventilation arrangement includes a casing having a vent hole defined therein. A filter having an air permeability and a water repellency is mounted on the casing so as to cover the vent hole. An elongated ventilation member is mounted on the casing so as to communicate with the vent hole and extends in a direction diverting from the direction in which the casing is splashed with water. The filter may be accommodated in the elongated ventilation member.

Ventilation arrangement for a casing covering a compressor drive unit

In a device for heating and circulating a fluid for vehicles wherein a fluid heating and delivering unit for heating and delivering a fluid, and a car room heat exchanger are annularly connected together to circulate the fluid in order to heat a car room, a bypass passage is installed in a fluid passage between the fluid heating and delivering unit and the car room heat exchanger, such that the bypass passage extends in a close vicinity to batteries to heat said batteries. The heated fluid for heating the car room is utilized to heat the batteries for driving the vehicle, so that the decrease of the battery temperature can be suppressed and the battery performance improved.

Device for heating and circulating fluid for vehicles

A first heat exchanger implements heat exchange between refrigerant and atmosphere. A second heat exchanger implements heat exchange between the refrigerant and air directed to an interior of the vehicle. A third heat exchanger downstream of the second heat exchanger implements heat exchange between the refrigerant and the air directed to the interior of the vehicle. A four-way valve connected among a refrigerant flow restricting device, the first heat exchanger, the second heat exchanger, and the third heat exchanger for changing a flow path of the refrigerant. A bypass device allows the refrigerant to selectively flow through the second heat exchanger and bypass the second heat exchanger. During a first mode of operation, the refrigerant is circulated sequentially through a compressor, the third heat exchanger, the four-way valve, the first heat exchanger, the refrigerant flow restricting device, the four-way valve, the second heat exchanger, and the compressor. During a second mode of operation, the refrigerant is circulated sequentially through the compressor, the third heat exchanger, the four-way valve, the refrigerant flow restricting device, the first heat exchanger, the four-way valve, the second heat exchanger, and the compressor. During a third mode of operation, the refrigerant is circulated sequentially through the compressor, the third heat exchanger, the four-way valve, the refrigerant flow restricting device, the first heat exchanger, the four-way valve, and the compressor while being allowed by the bypass device to bypass the second heat exchanger.

Air conditioning apparatus for a vehicle

A heat pump cooling-heating-dehumidifying system for an electric vehicle includes a compressor for compressing refrigerant, a refrigerant throttling device for achieving pressure reduction of the refrigerant, an out-room air-heat exchanger for heat-exchanging between the refrigerant and outside air, a first in-room air-heat exchanger for heat-exchanging between the refrigerant and air to be introduced into a car room, a second in-room air-heat exchanger provided downstream of the first in-room air-heat exchanger for selectively heat-exchanging between the refrigerant and the air which was heat-exchanged at the first in-room air-heat exchanger, and a four-way switching valve for switching a flow passage of the refrigerant. In each of the cooling operation and the dehumidifying-heating operation of the system, the refrigerant is circulated through the flow passage in order of the compressor, the second in-room air-heat exchanger, the four-way switching valve, the out-room air-heat exchanger, the refrigerant throttling device, the first in-room air-heat exchanger, the four-way switching valve and then the compressor. On the other hand, during the heating operation of the system, the refrigerant is circulated through the flow passage in order of the compressor, the second in-room air-heat exchanger, the four-way switching valve, the first in-room air-heat exchanger, the refrigerant throttling device, the out-room air-heat exchanger, the four-way switching valve and then the compressor.

Heat pump cooling-heating-dehumidifying system for electric vehicle

An air conditioning system includes: a compressor, an outside air heat exchanger, an outside air heat exchanger fan, an expansion valve, an interior heat exchanger, an interior heat exchanger fan, and a four-way switching valve further comprises an outside air induction/venting device provided outside the outside air heat exchanger. A device for switching or opening/closing the air intakes and/or outlet of the outside air heat exchanger are provided in the outside air induction/venting device and are operated to enable the efficient use of waste heat from the drive shaft motor or inside the passenger compartment, and to provide a defrost cycle in the heat pump heating mode.

Air conditioning apparatus for an electrically-powered motor vehicle

An automotive air conditioning system equipped with an electrical compressor uses a single-shaft, dual output generator to provide a low voltage output to drive existing 12-V or 24-V automotive electrical equipment and a high voltage output to drive the air conditioning motor-driven compressor, and a control device to control the electrical compressor.

Growing community of inventors

Moriyama, Japan

Norio Yoshida