Air conditioning system for vehicles

Patent metadata

Field	Value
Publication number	US-9758008-B2
Application number	US-201313867232-A
Country	US
Kind code	B2
Filing date	Apr 22, 2013
Priority date	May 2, 2012
Publication date	Sep 12, 2017
Grant date	Sep 12, 2017

Abstract

In an air conditioning system, a control unit controls an adjusting unit to adjust a ratio between an amount of a first part of introduced air passing through a heater core and an amount of a second part of the introduced air bypassing the heater core to a first ratio at which the amount of the first part of the introduced air decreases from a maximized amount of the first part of the introduced air according to an increase in temperature of the heater core by a warming unit. When a setting temperature for air conditioning is increased by an input unit, the control unit controls the adjusting unit to change the ratio from the first ratio to a second ratio at which the amount of the first part of the introduced air increases.

First claim

What is claimed is:

1. An air conditioning system for warming at least part of air introduced therein using a heater core to supply temperature-conditioned air to a cabin of a vehicle, the air conditioning system comprising:
an adjusting unit configured to adjust a ratio between an amount of a first part of the introduced air passing through the heater core and an amount of a second part of the introduced air bypassing the heater core, the adjusting unit being configured to adjust the ratio to an initial ratio at which the amount of the first part of the introduced air is maximized;
an outside temperature measuring unit configured to measure an outside temperature out of the cabin;
an input unit configured to input a temperature setting for air conditioning of the cabin when operated;
a warming source for warming the heater core;
a first control unit including a deviation calculator and a first additional-value calculator, the first control unit further including a target temperature-setting calculator, the deviation calculator is configured to receive the temperature setting input by the input unit and to calculate a deviation between a predetermined reference temperature setting and the temperature setting, the first additional-value calculator is configured to receive the deviation calculated by the deviation calculator and the outside temperature measured by the outside temperature measuring unit and to calculate a first additional value, the target temperature-setting calculator is configured to add the temperature setting to the first additional value calculated by the first additional-value calculator to determine a target temperature setting, and the first control unit is configured to control an operation of the warming source to warm the heater core based on the target temperature setting; and
a second control unit configured to:
control the adjusting unit to adjust the ratio to a first ratio at which the amount of the first part of the introduced air decreases from the maximized amount of the first part of the introduced air according to an increase in temperature of the heater core by the warming source; and
when the temperature setting is increased by the input unit, control the adjusting unit to change the ratio from the first ratio to a second ratio at which the amount of the first part of the introduced air increases;

wherein the air conditioning system further comprises:
a humidity measuring unit configured to measure a value of a humidity in the cabin,
wherein the first control unit includes a second additional-value calculator configured to receive the values of a humidity measured by the humidity measuring unit to calculate a second additional value,
the target temperature-setting calculator is configured to add the second additional value calculated by the second additional-value calculator to the temperature setting and the first additional value to determine a target temperature setting,
the first control unit is configured to control the operation of the warming source to warm the heater core based on the target temperature setting such that:
the temperature of the heater core increases as the absolute value of the deviation between the predetermined reference temperature setting and the temperature setting decreases;
the temperature of the heater core increases as the measured outside air decreases; and
the temperature of the heater core increases as the measured value of the humidity increases.

2. The air conditioning system according to claim 1 , wherein the first control unit comprises:
a limiting unit configured to limit an operation range of the warming source with respect to the temperature setting and the measured outside temperature according to information inputted to the air conditioning system.

Assignees

• Suzuki Motor Corp

Inventors

• Hashigaya Hideki
• Momose Kensuke

Classifications

• B60H1/00885

  Controlling the flow of heating or cooling liquid, e.g. valves or pumps (B60H1/00899 takes precedence; constructions of valves B60H1/00485) · CPC title

• B60H1/00007 Primary

  Combined heating, ventilating, or cooling devices (control systems or mechanisms B60H1/00642) · CPC title

• B60H1/00835

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

• B60H1/00785 Primary

  by the detection of humidity or frost · CPC title

• B60H2001/00733

  Computational models modifying user-set values · CPC title