Refrigeration-cycle device

A refrigeration-cycle device comprising:

• an air-conditioning duct channeling air toward a passenger compartment;
• a blower blowing air into said air-conditioning duct;
• a compressor including gas-injection port which introduces intermediate-pressure refrigerant into said compressor;
• an indoor heat-exchanger disposed within said air-conditioning duct which heats air with higher-pressure gas refrigerant discharged from said compressor during a heating mode;
• outdoor heat exchange which evaporates lower-pressure refrigerant by extracting heat from outside air during heating;
• and
• heat-exchanging means in which refrigerant extracts heat from a waste-heat recovering fluid containing recovered waste heat from a heating device;
• a plurality of changeable operation modes including a lower-pressure-side heat-extraction heat-pump mode, an intermediate-pressure-side heat-extraction heat-pump mode;
• wherein said heat-exchanging means is set to a lower-pressure side and lower-pressure refrigerant drawn into said compressor extracts heat from the waste-heat recovering fluid when in the lower-pressure-side heat-extraction heat-pump mode;
• wherein said heat-exchanging means is set in an intermediate-pressure side and intermediate-pressure refrigerant is introduced into said compressor-gas-injection port which has extracted heat from the waste-heat recovering fluid, when in the intermediate-pressure-side heat-extraction heat-pump mode.

A refrigeration-cycle device comprising:

• air-conditioning duct wherein air flows toward a passenger compartment;
• blower for blowing air to said air-conditioning duct;
• compressor including gas-injection port for introducing intermediate-pressure refrigerant into compressor;
• indoor heat exchanger disposed within said air-conditioning duct for heating air by higher-pressure gas refrigerant discharged from said compressor during a heating mode;
• outdoor heat exchanger for evaporating lower-pressure refrigerant by extracting heat from outside air during heating;
• heat-exchanging means where refrigerant extracts heat from waste-heat recovering fluid containing recovered waste heat from heating device (81);
• and
• wherein said heat-exchanging means extracts heat from the waste-heat recovering fluid and the higher-pressure refrigerant passing through said indoor heat-exchanger.

A refrigeration-cycle device comprising:

• air-conditioning duct channeling air toward a passenger compartment;
• blower for blowing air to said air-conditioning duct;
• compressor including gas-injection port for introducing intermediate-pressure refrigerant into said compressor;
• indoor heat-exchanger disposed within said air-conditioning duct for heating air by higher-pressure gas refrigerant discharged from said compressor during heating;
• outdoor heat exchanger evaporating lower-pressure refrigerant by extracting heat from outside air during heating;
• and
• heat-exchanging means where refrigerant extracts heat from waste-heat recovering fluid containing recovered the waste heat from a heating device, wherein:
• said heat-exchanging means extracting heat from both the waste-heat recovering fluid and the higher-pressure refrigerant passing through said indoor heat-exchanger.

A refrigeration-cycle device comprising:

• air-conditioning duct channeling air toward a passenger compartment;
• blower for blowing air to said air-conditioning duct;
• compressor including gas-injection port for introducing intermediate-pressure refrigerant into said compressor;
• indoor heat-exchanger disposed within said air-conditioning duct for heating air with higher-pressure gas refrigerant discharged from said compressor during a heating mode;
• outdoor heat exchanger for evaporating lower-pressure refrigerant by extracting heat from outside air during heating;
• and
• heat-exchanging means where refrigerant extracts heat from waste-heat recovering fluid containing waste heat from a heating device (81), wherein:
• said heat-exchanging means are set at a lower-pressure side and the lower-pressure refrigerant drawn into said compressor extracts heat from the waste-heat recovering fluid.

A refrigeration-cycle device comprising:

• air-conditioning duct channeling air toward a passenger compartment;
• a blower blowing air into said air-conditioning duct;
• a compressor for compressing and discharging refrigerant;
• an indoor heat-exchanger disposed within said air-conditioning duct which heats air with higher-pressure gas refrigerant discharged from said compressor during a heating mode;
• outdoor heat exchanger which evaporates lower-pressure refrigerant by extracting heat from outside air during heating;
• and
• heat-exchanging means where refrigerant extracts heat from waste-heat recovering fluid containing waste heat from a heating device (81), wherein:
• said heat-exchanging means is set at a lower-pressure side and lower-pressure refrigerant drawn into said compressor extracts heat from the waste-heat recovering fluid;
• and
• during a cooling mode when said outdoor heat-exchanger operates as a condenser, said heat-exchanging means operate as a condenser for cooling higher-pressure refrigerant with the waste-heat recovering fluid.

A refrigeration-cycle device comprising:

• air-conditioning duct wherein air flows toward a passenger compartment;
• indoor heat-exchanger disposed within said air-conditioning duct which heats air with higher-pressure gas refrigerant discharged from a discharge port of said compressor during a heating mode;
• heat-exchanging means for exchanging heat during the heating mode between higher-pressure refrigerant passing through said indoor heat-exchanger and the intermediate-pressure refrigerant, said intermediate-pressure refrigerant formed by depressurizing a portion of higher-pressure refrigerant by passing said higher-pressure refrigerant through a bypass;
• second depressurizing device depressurizing the higher-pressure refrigerant passing through said heat-exchanging means to a lower pressure during the heating mode;
• and
• outdoor heat-exchanger exchanging heat between the lower-pressure refrigerant passing through said second depressurizing device and outside air during the heating mode, wherein:
• in the heating mode, the intermediate-pressure gas refrigerant gasified by the heat exchange in said heat-exchanging means is introduced into said gas-injection port;
• said heat-exchanging means includes first flat passage wherein the higher-pressure refrigerant flows, second flat passage wherein the intermediate-pressure refrigerant flows, first header member connected to the end of said first passage and second header member connected to the end of said second passage;
• and
• first passage and said second passage penetrates any at least said first header member or said second header member.

A refrigeration-cycle device comprising:

• air-conditioning duct channeling air toward a passenger compartment;
• indoor heat-exchanger disposed within said air-conditioning duct for heating air with higher-pressure gas refrigerant discharged from said compressor during a heating mode;
• heat-exchanging means where intermediate-pressure refrigerant exchanges heat during the heating mode with higher-pressure refrigerant passing through said indoor heat-exchanger and waste-heat recovering fluid from heating device, the intermediate-pressure refrigerant formed by depressurizing a portion of the higher-pressure refrigerant passing through a bypass to an intermediate pressure;
• second depressurizing device for depressurizing the higher-pressure refrigerant passing through said heat-exchanging means to a lower pressure during the heating mode;
• and
• outdoor heat-exchanger for exchanging heat between the lower-pressure refrigerant passing through said second depressurizing device and outside air during the heating mode, wherein:
• during the heating mode, the intermediate-pressure gas refrigerant gasified by heat exchange in said heat-exchanging means is introduced into said gas-injection port;
• said heat-exchanging means including first flat passage wherein the higher-pressure refrigerant flows, second flat passage wherein the intermediate-pressure refrigerant flows, third flat passage wherein the waste-heat recovering fluid flows, first header member connected to an end of said first passage, second header member connected to an end of said second passage and third header member connected to an end of said third passage;
• and
• any one of said first passage, said second passage and said third passage penetrates at least one of said first header member, said second header member and said third header member.

A refrigeration-cycle device comprising:

• an air-conditioning duct channeling air toward a passenger compartment;
• a compressor which compresses and discharges refrigerant;
• an indoor heat exchanger disposed within said air-conditioning duct;
• outdoor heat exchanger;
• and
• during a heating mode, the indoor heat-exchanger acts as a condenser, the outdoor heat-exchanger acts as an evaporator, and the hot air heated by the indoor heat-exchanger is blown into the passenger compartment;
• during a defrosting mode for defrosting the outdoor heat-exchanger is set, gas refrigerant discharged from the compressor is divided into two portions, a first of said two portions flow into the outdoor heat-exchanger to defrost the outdoor heat exchanger, a second of the two portions flows into the indoor heat exchanger, and the hot air heated by the indoor heat-exchanger is blown into the passenger compartment.