Vehicle air-conditioning system

Patent metadata

Field	Value
Publication number	US-9725101-B2
Application number	US-99050908-A
Country	US
Kind code	B2
Filing date	May 30, 2008
Priority date	May 30, 2008
Publication date	Aug 8, 2017
Grant date	Aug 8, 2017

Abstract

A passenger compartment duct is provided with a passenger compartment air blow opening through which air is supplied into a passenger compartment and a cab-air-supply-duct communicating opening communicating with a cab air supply duct. The cab air supply duct is provided with a cab air blow opening through which air is supplied into a cab and a passenger-compartment-duct communicating opening communicating with the passenger compartment air supply duct. There are provided a damper turning communication from the passenger compartment air supply duct to the cab air supply duct ON or OFF, a cab air outlet through which air in the cab is discharged to the outside of the cab, and a damper opening or closing the cab air outlet. The cab air outlet includes a first outlet opened so as to communicate with an air intake side of cab air-conditioning units and a second outlet opened so as to communicate with the passenger compartment. The damper selectively discharges air in the cab to either the outside air intake side of the cab air-conditioning units or the passenger compartment.

First claim

The invention claimed is:

1. A vehicle air-conditioning system comprising:
a passenger compartment air-conditioning apparatus that air-conditions a passenger compartment, a cab air-conditioning apparatus that is different from said passenger air-conditioning apparatus and that air-conditions a cab formed by an enclosure separate from the passenger compartment, a passenger compartment duct through which air conditioned by said passenger compartment air-conditioning apparatus is allowed to flow to the passenger compartment, and a cab duct through which air conditioned by said cab air-conditioning apparatus is allowed to flow to the cab, wherein
said passenger compartment duct includes a passenger compartment air blow opening through which air is supplied into said passenger compartment and said passenger compartment duct includes a cab-duct communicating opening that is connected to said cab duct,
said cab duct includes a cab air blow opening through which air is supplied into said cab and said cab duct includes a passenger-compartment-duct communicating opening that is connected to said passenger compartment duct,
a bypass duct connected between said passenger compartment duct and said cab duct, and
the vehicle air-conditioning system includes
a duct opening and closing device in said bypass duct that turns communication from said passenger compartment duct to said cab duct ON or OFF;
at least one cab air outlet through which air in said cab is discharged to the outside of said cab; and
an outlet opening and closing device that is positioned so that its movement opens or closes the at least one cab air outlet by blocking or not blocking the at least one cab air outlet, wherein
said at least one cab air outlet includes a first outlet opened so as to communicate with an air intake side of said cab air-conditioning apparatus and a second outlet opened so as to communicate with said passenger compartment,
said outlet opening and closing device selectively discharges the air in said cab to either the outside air intake side of said cab air-conditioning apparatus or said passenger compartment,
in normal mode, said duct opening and closing device turns the communication from said passenger compartment duct to said cab duct OFF, and said outlet opening and closing device opens said first outlet, and
in the case of failure of said cab air-conditioning apparatus, said duct opening and closing device turns the communication from said passenger compartment duct to said cab duct ON, and said outlet opening and closing device opens said second outlet.

2. The vehicle air-conditioning system of claim 1 , wherein a vehicle including said cab has an openable and closable window or opening and the window or opening serves as said at least one cab air outlet and said outlet opening and closing device.

3. The vehicle air-conditioning system of claim 2 , further comprising:
a cab temperature sensor that detects a temperature in the cab; and
a passenger compartment air-conditioning controller that controls the operation of said passenger compartment air-conditioning apparatus, wherein
said passenger compartment air-conditioning controller is communicably connected with said cab temperature sensor, and
said passenger compartment air-conditioning controller controls said passenger compartment air-conditioning apparatus on the basis of a value detected by said cab temperature sensor to control air-conditioning of said cab.

4. The vehicle air-conditioning system of claim 1 , further comprising:
a cab temperature sensor that detects a temperature in the cab; and
a passenger compartment air-conditioning controller that controls the operation of said passenger compartment air-conditioning apparatus, wherein
said passenger compartment air-conditioning controller is communicably connected with said cab temperature sensor, and
said passenger compartment air-conditioning controller controls said passenger compartment air-conditioning apparatus on the basis of a value detected by said cab temperature sensor to control air-conditioning of said cab.

5. The vehicle air-conditioning system of claim 1 , further comprising:
a cab temperature sensor that detects a temperature in the cab; and
a passenger compartment air-conditioning controller that controls the operation of said passenger compartment air-conditioning apparatus, wherein
said passenger compartment air-conditioning controller is communicably connected with said cab temperature sensor, and
said passenger compartment air-conditioning controller controls said passenger compartment air-conditioning apparatus on the basis of a value detected by said cab temperature sensor to control air-conditioning of said cab.

6. A vehicle air-conditioning system comprising:
a passenger compartment air-conditioning apparatus that air-conditions a passenger compartment, a cab air-conditioning apparatus that is different from said passenger air-conditioning apparatus and that air-conditions a cab formed by an enclosure separate from the passenger compartment, a passenger compartment duct through which air conditioned by said passenger compartment air-conditioning apparatus is allowed to flow to the passenger compartment, and a cab duct through which air conditioned by said cab air-conditioning apparatus is allowed to flow to the cab, wherein
said passenger compartment duct includes a passenger compartment air blow opening through which air is supplied into said passenger compartment and said passenger compartment duct includes a cab-duct communicating opening that is connected to said cab duct,
said cab duct includes a cab air blow opening through which air is supplied into said cab and said cab duct includes a passenger-compartment-duct communicating opening that is connected to said passenger compartment duct,
a bypass duct connected between said passenger compartment duct and said cab duct, and
the vehicle air-conditioning system includes
a duct opening and closing device in said bypass duct that turns communication from said passenger compartment duct to said cab duct ON or OFF;
at least one cab air outlet through which air in said cab is discharged to the outside of said cab; and
an outlet opening and closing device that is positioned so that its movement opens or closes the at least one cab air outlet by blocking or not blocking the at least one cab air outlet, wherein
said at least one cab air outlet includes a first outlet opened so as to communicate with an air intake side of said cab air-conditioning apparatus and a third outlet opened so as to communicate with an outside air side,
said outlet opening and closing device opens or closes said third outlet
in normal mode, said duct opening and closing device turns the communication from said passenger compartment duct to said cab duct OFF, and said outlet opening and closing device closes said third outlet, and
in the case of failure of said cab air-conditioning apparatus, said duct opening and closing device turns the communication from said passenger compartment duct to said cab duct ON, and said outlet opening and closing device opens said third outlet.

7. The vehicle air-conditioning system of claim 6 , wherein a vehicle including said cab has an openable and closable window or opening and the window or opening serves as said at least one cab air outlet and said outlet opening and closing device.

8. The vehicle air-conditioning system of claim 6 , further comprising:
a cab temperature sensor that detects a temperature in the cab; and
a passenger compartment air-conditioning controller that controls the operation of said passenger compartment air-conditioning apparatus, wherein
said passenger compartment air-conditioning controller is communicably conn

Assignees

• Yuasa Hiroyuki
• Mitsubishi Electric Corp

Inventors

• Yuasa Hiroyuki

Classifications

• B60H2001/00942

  comprising a plurality of heat exchangers, e.g. for multi zone heating or cooling · CPC title

• B60H1/00807

  the input being a specific way of measuring or calculating an air or coolant temperature · CPC title

• B60H1/00835

  Damper doors, e.g. position control (construction or arrangement of damper doors B60H1/00664; B60H1/00864 takes precedence) · CPC title

• B61D27/00 Primary

  Heating, cooling, ventilating, or air-conditioning {(heating, cooling or ventilating devices for vehicles in general B60H1/00; devices for moistening air in vehicles B60H3/02; devices for filtering air in vehicles B60H3/06)} · CPC title

• B60H1/00821

  the components being ventilating, air admitting or air distributing devices · CPC title