Dual air passage heating apparatus with ceramic heater element
First Claim
Patent Images
1. An air conditioning apparatus for automobiles, comprising:
- an air duct for providing a main passage of air, said air duct having an air inlet opening at one end and an air outlet opening at an opposite end for conducting the air along a substantially longitudinal direction of said air duct into a compartment chamber of the automobile;
air blower means arranged in said air duct for urging the air from said inlet opening of said air duct through said main passage of air;
heat exchanging means provided in said air duct for selectably heating and cooling the air urged through said main passage of air by said air blower means;
an auxillary electrical ceramic heating element arranged in said air duct for heating the air introduced by said air blower means, said electrical ceramic heating element having a rectangular configuration defining substantially a plane having a predetermined length which is immovably arranged in said main air passage of air of said air duct and which lies substantially parallel to said longitudinal direction of said air duct and substantially centered therein to define first and second air passages having at least said predetermined length and separated from one another by said heating element, said heating element having through-holes transverse to said plane for passing the air to be heated, said first and second air passages communicating with each other substantially exclusively via said through-holes of said heating element; and
first and second valves located at least at an upstream end of said first air passage and at least at a downstream end of said second air passage for selectably opening and closing said upstream end of said first air passage and said downstream end of said second air passage, respectively.
1 Assignment
0 Petitions
Accused Products
Abstract
An air heating apparatus comprises a auxillary PTC heating element in an air duct lying parallel to the length of the duct to define first and second air passages separated by the heating element. The PTC heating element has apertures through which passes air to be heated; the two air passages thereby communicating with each other by means of the apertures through the heating element. First and second valves are located at upstream and downstream ends of the first and second air passages for selectably closing and opening the upstream and downstream ends of the first and second air passages, respectively.
-
Citations
8 Claims
-
1. An air conditioning apparatus for automobiles, comprising:
-
an air duct for providing a main passage of air, said air duct having an air inlet opening at one end and an air outlet opening at an opposite end for conducting the air along a substantially longitudinal direction of said air duct into a compartment chamber of the automobile; air blower means arranged in said air duct for urging the air from said inlet opening of said air duct through said main passage of air; heat exchanging means provided in said air duct for selectably heating and cooling the air urged through said main passage of air by said air blower means; an auxillary electrical ceramic heating element arranged in said air duct for heating the air introduced by said air blower means, said electrical ceramic heating element having a rectangular configuration defining substantially a plane having a predetermined length which is immovably arranged in said main air passage of air of said air duct and which lies substantially parallel to said longitudinal direction of said air duct and substantially centered therein to define first and second air passages having at least said predetermined length and separated from one another by said heating element, said heating element having through-holes transverse to said plane for passing the air to be heated, said first and second air passages communicating with each other substantially exclusively via said through-holes of said heating element; and first and second valves located at least at an upstream end of said first air passage and at least at a downstream end of said second air passage for selectably opening and closing said upstream end of said first air passage and said downstream end of said second air passage, respectively. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
Specification