Air conditioning system suitable for use in an electric vehicle
First Claim
1. An air conditioning system for use in a vehicle comprising:
- a compressor for compressing a refrigerant;
interior heat exchanging means disposed inside said vehicle and connected to said compressor;
means for expanding said refrigerant connected to said interior heat exchanging means;
exterior heat exchanging means disposed outside of said vehicle and connected to said compressor and said interior heat exchanging means;
a switching valve provided between said interior heat exchanging means and said exterior heat exchanging means for selectively feeding said refrigerant in a state in which said refrigerant has a high temperature and a high pressure from said compressor to one of said exterior heat exchanging means and said interior heat exchanging means;
sensor means for detecting a temperature of a passenger compartment of said vehicle;
an intake damper which can be opened or closed for introducing outside air into said vehicle;
at least one floor damper, provided at a position downstream from said interior heat exchanging means, said damper being openable and closable for introducing air toward a floor of said passenger compartment; and
control means for controlling a degree of opening of said intake damper and said floor damper based on a temperature detected by said sensor means, wherein said interior heat exchanging means comprises at least a first interior heat exchanger and a second interior heat exchanger which are connected in series with each other.
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Accused Products
Abstract
An air conditioning system suitable for use in an electric vehicle. In the air conditioning system, a refrigerant gas circulatory system of the heat pump type for selectively effecting cooling and heating is disposed inside the electric vehicle and comprises lines which interconnect three heat exchangers, a directional control valve, a compressor and an expansion valve to one another. A control device is provided so as to activate and inactivate the heat exchanger, the directional control valve and the compressor. Before the expected running of the vehicle, at least a portion of the refrigerant gas circulatory system can be operated by the control device using a drive source different from the drive source used for running the vehicle. Accordingly, a comfortable room environment can be established for the expected time on riding by activating the air conditioning system in an unmanned state.
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Citations
24 Claims
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1. An air conditioning system for use in a vehicle comprising:
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a compressor for compressing a refrigerant; interior heat exchanging means disposed inside said vehicle and connected to said compressor; means for expanding said refrigerant connected to said interior heat exchanging means; exterior heat exchanging means disposed outside of said vehicle and connected to said compressor and said interior heat exchanging means; a switching valve provided between said interior heat exchanging means and said exterior heat exchanging means for selectively feeding said refrigerant in a state in which said refrigerant has a high temperature and a high pressure from said compressor to one of said exterior heat exchanging means and said interior heat exchanging means; sensor means for detecting a temperature of a passenger compartment of said vehicle; an intake damper which can be opened or closed for introducing outside air into said vehicle; at least one floor damper, provided at a position downstream from said interior heat exchanging means, said damper being openable and closable for introducing air toward a floor of said passenger compartment; and control means for controlling a degree of opening of said intake damper and said floor damper based on a temperature detected by said sensor means, wherein said interior heat exchanging means comprises at least a first interior heat exchanger and a second interior heat exchanger which are connected in series with each other.
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2. An air conditioning system for use in a vehicle comprising;
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a compressor for compressing a refrigerant; exterior heat exchanging means disposed outside of a passenger compartment of said vehicle and connected to said compressor; first blower means for blowing air through said exterior heat exchanging means; interior heat exchanging means disposed in said passenger compartment of said vehicle and connected to said compressor; second blower means for blowing air through said interior heat exchanging means; expansion valve means disposed in a first conduit connecting said exterior heat exchanging means and said interior heat exchanging means; a four-way valve provided in a second conduit connecting said exterior heat exchanging means and said interior heat exchanging means; and at least one damper through which air is blown into said passenger compartment of said vehicle after undergoing heat exchange in said interior heat exchanging means, said damper being disposed at a position downstream from said interior heat exchanging means, wherein said interior heat exchanging means comprises at least a first interior heat exchanger and a second interior heat exchanger both of which are connected in series with each other. - View Dependent Claims (3)
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4. An air conditioning system for use in a vehicle comprising;
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a compressor for compressing a refrigerant; exterior heat exchanging means disposed outside of a passenger compartment of said vehicle and connected to said compressor; first blower means for blowing air toward said exterior heat exchanging means; interior heat exchanging means disposed in said passenger compartment of said vehicle and connected to said compressor; second blower means for blowing air toward said interior heat exchanging means; expansion valve means disposed in a first refrigerant conduit connecting said exterior heat exchanging means and said interior heat exchanging means; a four-way valve disposed in a second refrigerant conduit connecting said exterior heat exchanging means and said interior heat exchanging means; and control means for controlling a quantity of air passing through said exterior heat exchanging means, wherein said interior heat exchanging means comprises at least a first interior heat exchanger and a second interior heat exchanger which are connected in series with each other. - View Dependent Claims (5, 6)
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7. An air conditioning system for use in a vehicle comprising;
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a compressor for compressing a refrigerant; exterior heat exchanging means disposed outside of a passenger compartment of said vehicle and connected to said compressor; first blower means for blowing air toward said exterior heat exchanging means; interior heat exchanging means disposed inside said passenger compartment and connected to said compressor; second blower means for blowing air toward said interior heat exchanging means; expansion valve means disposed in a first conduit connecting said exterior heat exchanging means and said interior heat exchanging means; a four-way valve disposed in a second conduit connecting said exterior heat exchanging means and said interior heat exchanging means; a first air port for discharging air out from said passenger compartment of said vehicle; a second air port for introducing air into said passenger compartment directly from outside of said passenger compartment; and means for opening and closing said first and second air ports, wherein said interior heat exchanging means comprises at least a first interior heat exchanger and a second interior heat exchanger which are connected in series with each other. - View Dependent Claims (8, 9, 10, 11)
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12. An air conditioning system for use in a vehicle comprising;
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a compressor compressing a refrigerant; exterior heat exchanging means disposed outside of a passenger compartment of said vehicle and connected to said compressor; first blower means for blowing air through said exterior heat exchanging means; interior heat exchanging means disposed in an air circulation compartment of said vehicle and connected to said compressor; said interior heat exchanging means including a first interior heat exchanger and a second interior heat exchanger connected in series flow relationship between said compressor and said exterior heat exchanging means; second blower means for blowing air through said first interior heat exchanger and then through said second interior heat exchanger; expansion valve means disposed in a first conduit connecting said exterior heat exchanging means and said interior heat exchanging means; a four-way valve provided in a second conduit connecting said exterior heat exchanging means and said interior heat exchanging means; and at least one damper for discharging air from said air circulation compartment into said passenger compartment of said vehicle after undergoing heat exchange in said interior heat exchanging means. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. An air conditioning system for use in a vehicle comprising;
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a compressor for compressing a refrigerant; exterior heat exchanging means disposed outside of a passenger compartment of said vehicle and connected to said compressor; first blower means for blowing air through said exterior heat exchanging means; interior heat exchanging means disposed in an air circulation compartment of said vehicle and connected to said compressor; said interior heat exchanging means including a first interior heat exchanger and a second interior heat exchanger positioned at separate locations in said air circulation compartment, a valve means in a first conduit connecting said first and second interior heat exchangers for controlling the flow of refrigerant between said first interior heat exchanger and said second interior heat exchanger; second blower means for blowing air through said interior heat exchanging means; expansion valve means disposed in a second conduit connecting said exterior heat exchanging means and said interior heat exchanging means; a four-way valve provided in a third conduit connecting said exterior heat exchanging means and said interior heat exchanging means; and at least one damper for discharging air from said air circulation compartment into said passenger compartment of said vehicle after undergoing heat exchange in said interior heat exchanging means. - View Dependent Claims (20, 21, 22, 23, 24)
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Specification