JPH0413212Y2 - - Google Patents

Description

[Detailed explanation of the idea] (Industrial application field) The present invention relates to an air conditioning system for a vehicle.

(Prior art) Air conditioning systems for automobiles are, for example, developed in U.S. Pat.
As shown in the publication, an outside air inlet and an inside air inlet are formed in the suction side duct of the fan, and the outside air inlet and the inside air inlet are selectively switched by an inside/outside air switching shutter to introduce the air into the heating unit. The heated air is then blown towards the occupant's feet, and the cold air is blown towards the occupant's face area. Furthermore, in order to improve the heating effect of the rear seats, a heating system has already been developed that heats the rear seats by guiding hot air heated by a heating unit to the vicinity of the rear seats through a duct (Jikkosho). -53-33297)).

(Problems to be solved by the invention) According to the conventional heating device described above, by blowing hot air toward the feet of the occupants and also blowing warm air near the rear seats, the entire vehicle interior can be efficiently heated. Although it is possible to improve the circulation efficiency of heating air inside the vehicle, in the case of an air conditioner equipped with a cooling unit, the cold air cooled by the cooling unit is
The air is mainly blown toward the face from the upper part of the front seat, cools the interior of the vehicle, and then is inhaled from an inside air inlet installed near the fan of the air conditioner. For this reason, the circulation path of cold air in the vehicle interior is short, which is not preferable for efficiently cooling the entire vehicle interior. Furthermore, since the inside air inlet is provided near the fan, there have been problems such as the noise caused by the rotation of the fan entering the vehicle interior and having an adverse effect on the interior environment of the vehicle interior.

Therefore, the purpose of the present invention is to lengthen the circulation path of cold air, efficiently cool the entire vehicle interior, and further suppress the noise from entering the vehicle interior due to the fan when introducing inside air, thereby improving the interior environment of the vehicle interior. Our objective is to provide air conditioning systems for automobiles.

(Means for Solving the Problems) The automobile air conditioner according to the present invention which achieves the above object selectively opens and closes the outside air inlet and the inside air inlet formed in the suction side duct of the fan to supply either inside air or outside air. An internal/external air switching shutter that selectively switches and introduces air, a cooling unit installed in the delivery side duct of the fan, a heating unit installed in the case connected downstream of the delivery side duct equipped with the cooling unit, and a heating unit A vent shutter that controls the volume of warm air heated by the unit blown out from the hot air outlet installed near the occupant's feet and the amount of cold air blown out from the cold air outlet installed near the occupant's face as cold air, and the heating system. In an air conditioner having a rear seat duct which blows out hot air heated by the unit to the vicinity of the rear seat via a hot air outlet installed in parallel with the warm air outlet, The inside air inlet is communicated with the inside air inlet through an opening, the inside/outside air switching shutter is disposed in the opening, and a switching shutter is further provided to selectively open and close the opening and the hot air outlet. When installing, operate the switching shutter to the opening open position and the inside/outside air switching shutter to the outside air intake closed position, and introduce the cabin air from the rear seat duct outlet into the suction side duct of the fan. It is designed to guide you.

(Function) When introducing inside air during cooling, the switching shutter is operated to the opening open position, and the inside/outside air switching shutter is operated to the outside air intake port closed position, and air inside the vehicle is introduced from the air outlet of the rear seat duct. By doing so, a large circulation path of cold air is created throughout the vehicle interior, and the entire vehicle interior is efficiently and uniformly cooled.Furthermore, the rear seat duct functions as a muffler against the rotating noise of the fan. This prevents noise from entering the vehicle interior and improves the interior environment.

(Example) An example of an air conditioner for an automobile according to the present invention will be described below with reference to the drawings.

FIG. 1 is a sectional view of an air conditioner for an automobile according to the present invention. Reference numeral 1 in the figure indicates an air conditioner, which is provided in front of a front seat 2 in the vehicle interior. The air conditioner 1 is provided with a fan 3, and a duct 4 on the suction side of the fan 3 is formed with an outside air inlet 4a and an inside air inlet 4b. The outside air inlet 4a or the inside air inlet 4b is selectively opened and closed to selectively introduce either inside air or outside air.

The air sucked in by the fan 3 is cooled while passing through the cooling unit 9 provided in the delivery side duct 8 of the fan 3, and becomes cold air that is directed from the cold air outlet 10 toward the vicinity of the passenger's face. At the same time, the air is warmed while passing through the heating unit 13 housed in the case 11 connected to the downstream side of the delivery side duct 8, and is blown out from the hot air outlet 14 near the feet of the passenger as warm air. It's getting old. Cold air outlet 10 and heating unit 13
The proportion of the blown air that passes through and becomes warm air can be controlled by the opening degree of the vent shutter 12 provided at the branching portion of both passages. The temperature of the cold air or hot air is adjusted by controlling the refrigerant or hot water acting on the cooling unit 9 and the heating unit 13.

A part of the air that has passed through the heating unit 13 is guided and blown out near the rear seat 16 through a rear seat duct 6 connected to a hot air outlet 17 arranged in parallel with the hot air outlet 14 at the lower end of the case 11. ing. Near the entrance 6a of the rear seat duct 6,
It communicates with the inside air inlet 4b through an opening 18,
When the inside/outside air switching shutter 7 is operated to the position where the inside air inlet 4b shown by the dashed line is closed, the opening 18 is also closed. Further, a switching shutter 15 is rotatably provided to selectively open and close the opening 18 and the hot air outlet 17 provided at the lower end of the case 11.

The operation of the air conditioner configured in this way during heating and cooling will be explained.

During heating, the inside/outside air switching shutter 7 and the switching shutter 15 are rotated to the position where they close the inside air inlet 4b and the opening 18, as shown by the dashed line in FIG. The flow of the air sucked in from the outside air inlet 4a of the duct 4 is shown by the hatched arrow, and the ratio of the air being blown out from the hot air outlet 14 and the cold air outlet 10 is determined by the opening degree of the vent shutter 12. The heated air is heated by the heating unit 13 and blown out from the hot air outlet 14 to the feet of the occupant in the front seat 2. Furthermore, a part of the warm air heated by the heating unit 13 is guided through the rear seat duct 6 provided along the floor, and is blown out from the air outlet 6b toward the vicinity of the rear seat 16, thereby being blown out into the passenger compartment. The interior of the vehicle can be heated uniformly and efficiently throughout.

For cooling when inside air is introduced, the inside/outside air switching shutter 7, switching shutter 15, and vent shutter 12 are connected to the outside air inlet 4a, respectively, as shown by solid lines.
It is in a state where it is rotated to a position where the passage to the hot air outlet 17 and the heating unit 13 is closed. Therefore, the air in the vehicle interior is sucked in by the fan from the air outlet 6b of the rear seat duct 6, and is sucked into the suction side duct 4 through the opening 18.

The air sucked in by the fan 3 is turned into cold air by the cooling unit 9 and is blown out from the cold air outlet 10 toward the passenger's face. The blown out cold air circulates widely within the vehicle interior, as shown by arrow 5, and is sucked in again from the air outlet 6b of the rear seat duct 6. Therefore, the entire vehicle interior can be cooled uniformly and efficiently, and at this time, the rear seat duct 6 acts as a muffler against noise such as the rotation sound of the fan 3, and the rotation noise of the fan 3 is reduced. The living environment inside the vehicle can be improved.

(Effects) According to the present invention, by using the rear seat duct for heating as the inside air introduction duct during cooling, the entire vehicle interior can be uniformly cooled, improving cooling efficiency, and rotating the fan. As a result, noise can be reduced and the living environment inside the vehicle can be expected to be improved.

[Brief explanation of the drawing]

FIG. 1 is an explanatory cross-sectional view of an air conditioner for an automobile according to the present invention. 1...Air conditioner, 3...Fan, 4...Suction side duct, 4a...Outside air inlet, 4b...Inside air inlet, 6...Rear seat duct, 7...Inside/outside air switching shutter, 8... Delivery side duct, 9...
Air conditioning unit, 10...Cold air outlet, 11...Case, 12...Vent shutter, 13...Heating unit, 14...Warm air outlet, 15...Switching shutter, 16...Rear seat, 17...Warm air outlet,
18...Opening.

Claims (1)

[Scope of utility model registration request] An inside/outside air switching shutter 7 that selectively opens and closes an outside air inlet 4a and an inside air inlet 4b formed in the suction side duct 4 of the fan to selectively introduce either inside air or outside air, and a delivery side duct of the fan 3. a heating unit 13 provided in a case 11 connected downstream of the delivery-side duct 8 provided with the cooling unit 9;
The amount of hot air heated by the heating unit 13 is blown out from the hot air outlet 14 provided near the passenger's feet, and the amount of cold air blown out from the cold air outlet 10 provided near the passenger's face. The air conditioner has a vent shutter 12 to be controlled, and a rear seat duct 6 that guides and blows hot air warmed by a heating unit 13 to the vicinity of the rear seat via a hot air outlet 17 arranged in parallel with the hot air outlet 14. In the device, the vicinity of the entrance 6a of the rear seat duct 6 and the inside air inlet 4b are communicated through an opening 18, the inside/outside air switching shutter 7 is arranged in the opening 18, and the inside/outside air switching shutter 7 is arranged in the opening 18. A switching shutter 15 is provided to selectively open and close the hot air outlet 17, and when introducing inside air, the switching shutter 15 is placed in the open position of the opening 18, and the inside/outside air switching shutter 7 is placed in the closed position of the outside air inlet 4a. This air conditioner for an automobile is characterized in that when activated, air inside a vehicle is introduced from a rear seat duct outlet 6b and guided into a suction side duct 4 of a fan 3.