摘要:
Disclosed is an air-conditioning apparatus for an automotive vehicle so adapted as to allow its louvers disposed at air outlets for blowing or supplying air into the vehicle compartment to constantly assume their original positions when the louvers stop swinging. The swinging louvers are arranged to allow their directions in which the air is blown or supplied to be periodically changed by the swinging motor. The swinging motor is driven on the basis of a control signal from a control unit. A switching circuit of the swinging motor is provided with a first switch for being turned on or off on the basis of the signal from the control unit and with a second switch so arranged in parallel to the first switch and in association with the swinging motor as to be turned off when the swinging louvers are returned to their original positions.
摘要:
An automobile air conditioning system has a bypass air passage for directing air, before it is heated, to a car interior via a vent outlet. A bypass door is disposed in the bypass air passage, which has an opening which is automatically controlled according to a desired air conditioning temperature in an automatic air conditioning mode. The bypass door control can be intentionally changed to a mild control mode, in which the opening of the bypass door is automatically controlled to become smaller as the temperature of air, which either is in the bypass passage or is to be introduced into the bypass passage, becomes lower in a predetermined range of temperatures.
摘要:
An air conditioning control system for an automotive vehicle having an internal combustion engine. A variable capacity compressor has a pump having displacement thereof variable in response to a change in pressure within a controlled pressure chamber, a communication passage communicating between a low pressure chamber and the controlled pressure chamber, and a valve disposed to vary an opening area of the communication passage. An electromagnetic clutch connects and disconnects the compressor to and from the engine. An evaporator is connected to the compressor. A control unit controls the capacity of the compressor by supplying the valve with control current normally set within a predetermined range, to vary the opening area of the communication passage such that the temperature of outlet air from the evaporator becomes equal to a desired value. The control unit supplies the control current having a predetermined value larger than the above predetermined range over a predetermined time period to control the capacity of the compressor to the minimum value, when the electromagnetic clutch is brought into an engaged state from a disengaged state.
摘要:
The present invention relates to an air-conditioning apparatus provided in an vehicle. The apparatus is adapted to deliver conditioned air into a passenger compartment so as to regulate an interior temperature of a passenger compartment at a desired temperature. The apparatus comprises a temperature regulating device for regulating an outlet air temperature, a blower, and a controller for setting a target outlet air temperature and volume. The controller includes comfortability index setting means for setting a comfortability index which is a function of at least an outlet air temperature and volume and which is an indication representing a degree of a passenger's comfort, a variable temperature setting device located in the passenger compartment for a manual presetting of a desired interior temperature, and variable target setting means for setting a target value of the comfortability index dependent on the preset interior temperature, and air temperature and volume setting means for setting a combination of said target outlet air temperature and volume which allows the comfortability index to be approximated to the target value thereof.
摘要:
This invention has as its object to provide a method and apparatus for controlling a vehicle air conditioner, which can obtain a combination of an outlet air flow rate V.sub.a and an outlet air temperature T.sub.o, which is desirable for comfort of a passenger, under a condition of air-conditioning control based on a heat balance equation. In order to achieve this object, this invention provides a method of controlling a vehicle air conditioner including the first step of obtaining, from a heat balance equation, a plurality of combinations of the outlet air flow rates V.sub.a and the outlet air temperatures T.sub.o necessary for maintaining the passenger room temperature to be a predetermined target temperature, the second step of calculating comfort indices each representing the comfort level of a passenger on the basis of state amounts of factors which influence comfort felt by the passenger in the passenger room, and the plurality of combinations of the outlet air flow rates V.sub.a and the outlet air temperatures T.sub.o obtained in the first step, and the third step of searching a combination of the outlet air flow rate and the outlet air temperature, which can provide a comfort index closest to an optimal value of the comfort indices calculated in the second step.
摘要:
This invention has as its object to provide a method and apparatus for controlling a vehicle air conditioner, which can obtain a combination of an outlet air flow rate V.sub.a and an outlet air temperature T.sub.o, which is desirable for comfort of a passenger, under a condition of air-conditioning control based on a heat balance equation. In order to achieve this object, this invention provides a method of controlling a vehicle air conditioner, including the first step of obtaining, from a heat balance equation, a plurality of combinations of the outlet air flow rates V.sub.a and the outlet air temperatures T.sub.o necessary for maintaining the passenger room temperature to be a predetermined target temperature, the second step of calculating comfort indices each representing the comfort level of a passenger on the basis of state amounts of factors which influence comfort felt by the passenger in the passenger room, and the plurality of combinations of the outlet air flow rates V.sub.a and the outlet air temperatures T.sub.o obtained in the first step, and the third step of searching a combination of the outlet air flow rate and the outlet air temperature, which can provide a comfort index closest to an optimal value of the comfort indices calculated in the second step.
摘要:
A solar powered ventilation device for a vehicle has a solar cell disposed on a car body and electrically connected to an electrically operated ventilation system, and a controller for detecting a predetermined temperature outside the car to electrically disconnect the ventilation system from the solar cell. The ventilation system is supplied with electric power from the solar cell, thereby ventilating or exhausting air from the vehicle interior only when the exterior temperature is higher than the predetermined temperature.
摘要:
Disclosed is an air conditioner for use in an automotive vehicle. The air conditioner includes a timer circuit for deciding whether or not a given period of time has elapsed after an engine of the automotive vehicle has been started, an air quantity controller for limiting the amount of air to be introduced into a passenger compartment for a given period of time after an air cooling operation has been started, a compressor controller for prohibiting the operation of a compressor of the air conditioner for the given period of time to be decided by the timer circuit, a temperature sensor for detecting the temperature of the passenger compartment, and a switch portion for starting the compressor. The timer circuit, the air quantity controller, the compressor controller, and the switch portion are all provided in an air conditioner control unit. The control unit increases the amount of air within the first period of time when the temperature detected by the temperature sensor is greater than a predetermined value and when the switch portion outputs no instruction within the given period of time decided by the timer circuit. Alternatively, the control unit increases the amount of air from within the second period of time longer than the first period of time when the temperature detected by the temperature sensor is greater than the predetermined value and when the switch portion outputs an instruction for starting the compressor within the given period of time decided by the timer circuit.
摘要:
An object of the present invention is to improve a heat exchanging capability in an evaporator in a refrigerant cycle system in which a high pressure side is operated at a supercritical pressure. The refrigerant cycle system is a refrigerant cycle system in which a compressor, a gas cooler, an expansion valve and an evaporator are sequentially connected in a cyclic form and a high pressure side is operated at a supercritical pressure, wherein the degree of opening of the expansion valve is adjusted based on the temperature and pressure of a refrigerant at an outlet of the evaporator so as to control the degree of superheat at the outlet of the evaporator. An abstract of the present invention is to make large the degree of superheat at the outlet of the evaporator by means of the expansion valve.
摘要:
An object of the present invention is to improve a heat exchanging capability in an evaporator in a refrigerant cycle system in which a high pressure side is operated at a supercritical pressure. The refrigerant cycle system is a refrigerant cycle system in which a compressor, a gas cooler, an expansion valve and an evaporator are sequentially connected in a cyclic form and a high pressure side is operated at a supercritical pressure, wherein the degree of opening of the expansion valve is adjusted based on the temperature and pressure of a refrigerant at an outlet of the evaporator so as to control the degree of superheat at the outlet of the evaporator. An abstract of the present invention is to make large the degree of superheat at the outlet of the evaporator by means of the expansion valve.