JP2004098836A - Vehicular air-conditioning device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicular air-conditioning device for improving the comfortability of occupants by using ram action in a cab-over vehicle for preventing the entry of outside air into an inside/outside air switching unit. <P>SOLUTION: The vehicular air-conditioning device, wherein travel wind introduced from the front side of the vehicle is supplied to the side of an engine 10 via a tunnel structure part 20 arranged at a central portion of the vehicle extending to the moving direction, is applied to the cab-over vehicle having the engine 10 mounted at the lower side of a vehicle room 30. The inside/outside air switching unit 110 for switching air to be introduced into either inside air or outside air is arranged in the vehicle room 30 on the upper side of the tunnel structure part 20 of an air-conditioning unit 120 for cooling/heating the air to be introduced and blowing it as air-conditioned air to the vehicle room 30, and the inside/outside air switching unit 110 has an outside air introduction port 112 communicated with the tunnel structure part 20. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a vehicle air conditioner applied to a cab-over vehicle such as a truck or a wagon.
[0002]
[Prior art]
In a conventional cab-over vehicle such as a truck or a wagon, as shown in FIG. 5, the inside / outside air switching unit 110 of the air conditioner is disposed in front of the vehicle, and the outside air inlet 112 opens in the grill 70 on the front of the vehicle. It is provided in. The inside / outside air switching unit 110 is located in the passenger compartment 60 at the center of the passenger seat 60 at the center.
[0003]
[Problems to be solved by the invention]
However, since the direction in which the outside air is introduced is the same as the direction in which the ram pressure is applied during traveling of the vehicle, when it is desired to close the outside air introduction port 112 with the inside / outside air switching door 114 during the inside air introduction, the inside / outside air switching is performed by the ram pressure. There is a problem that the door 114 opens and outside air enters. In addition, in the passenger compartment 30, the inside and outside air switching unit 110 impedes the comfort of the passengers' feet at the feet.
[0004]
In view of the above problems, an object of the present invention is to provide a vehicle air conditioner that prevents outside air from entering into an inside / outside air switching unit due to ram pressure in a cab-over vehicle and improves occupant comfort.
[0005]
[Means for Solving the Problems]
The present invention employs the following technical means to achieve the above object.
[0006]
According to the first aspect of the present invention, the traveling wind introduced from the front of the vehicle is supplied to the engine (10) through the tunnel structure (20) disposed so as to extend in the traveling direction at the center of the vehicle. The engine (10) is applied to a cab-over vehicle mounted below the vehicle compartment (30), and cools and heats the introduced air to produce air-conditioned air in the vehicle compartment (30). The air conditioning unit (120) that blows out has an inside / outside air switching unit (110) that switches the air to be introduced into either inside air or outside air, and the inside / outside air switching unit (110) is a tunnel structure unit (20). The outside air inlet (112) of the inside / outside air switching unit (110) is provided so as to communicate with the inside of the tunnel structure (20). And
[0007]
Accordingly, the inside / outside air switching unit (110) can be set so as to introduce the outside air flowing into the tunnel structure (20) from below the vehicle compartment (30). The outside air introduction port (112) of the inside / outside air switching unit (110) is open downward, and the ram pressure during traveling is not directly applied, so that the outside air introduction port (112) is closed. Sometimes, it is possible to prevent the traveling wind from entering the inside / outside air switching unit (110).
[0008]
In addition, since the inside / outside air switching unit (110) is disposed in the center of the passenger compartment (30), it is possible to improve the livability of the passenger in the passenger's seat as compared with the related art.
[0009]
If the inside / outside air switching unit (110) is arranged in the center console (40) of the vehicle compartment (30), the inside / outside air switching unit (110) can be mounted on the vehicle. It can be installed with good appearance without being exposed in the room (30).
[0010]
According to the third aspect of the present invention, a cover (130) is provided near the outside air inlet (112) to prevent a thing jumped from below the vehicle from entering the inside / outside air switching unit (110). It is characterized by:
[0011]
As a result, it is possible to prevent a problem caused by a jumping object.
[0012]
If the cover (130) is provided with an opening through which air can pass as in the invention described in claim 4, the ventilation resistance of the cover (130) during the introduction of outside air can be reduced.
[0013]
According to the fifth aspect of the present invention, a condenser (140) for condensing the refrigerant to be supplied to the air conditioning unit (120) is provided in front of the engine (10), and the cover (130) is provided with the air conditioning unit (120). The condensed water generated when the air is cooled in the inside is arranged to be guided to the outside of the condenser (140).
[0014]
Thereby, the condenser (140) obtains a cooling effect and can improve the condensing ability of the refrigerant.
[0015]
Further, when the guide part is provided on the cover (130) to guide the condensed water in the width direction of the outside of the condenser (140), the condenser (140) is provided. The cooling is performed as a whole, and the refrigerant condensing ability can be further improved. The reference numerals in parentheses of the above-described units indicate the correspondence with the specific units described in the embodiments described below. .
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
(1st Embodiment)
1 and 2 show a first embodiment of the present invention, and a specific configuration thereof will be described below. The vehicle air conditioner (hereinafter, air conditioner) 100 of the present invention is applied to a truck vehicle (cab-over vehicle). In this vehicle, an engine 10 is mounted below a vehicle compartment 30. The traveling wind introduced from the grill 70 in front of the vehicle is supplied to the engine 10 through a tunnel structure (hereinafter, tunnel) 20 provided at the center of the vehicle and extending in the traveling direction. I am trying to.
[0017]
A radiator 150 for cooling the cooling water in the engine 10 is provided in front of the engine 10, and a condenser 140 for condensing a refrigerant supplied to an air conditioning unit 120 described later is provided in front of the radiator 150. Are arranged.
[0018]
The air conditioner 100 includes an inside / outside air switching unit 110 and an air conditioning unit 120. The inside / outside air switching unit 110 switches the air to be introduced into the air conditioning unit 120 into either inside air or outside air, and includes an inside / outside air switching door 114 provided in the inside / outside air switching box 110a.
[0019]
Here, the inside / outside air switching box 110a is a box body having a triangular prism shape. The inside air introduction port 111 is provided on the upper surface in FIG. 1, and the outside air introduction port 112 is provided on the lower surface. A communication passage 113 is opened on the left side, and communicates with the inside of the air conditioning unit 120. Further, an inside / outside air switching door 114 is provided, which rotates about a rotation axis located between the introduction ports 111 and 112.
[0020]
The air conditioning unit 120 cools and heats the air introduced from the inside / outside air switching unit 110 by a heat exchanger (evaporator, heater core) provided therein and blows out the air as conditioned air from a predetermined outlet. The instrument panel 50 is disposed on the front side of the instrument panel 50 in the vehicle interior 30.
[0021]
In the present invention, the position at which the inside / outside air switching unit 110 connected to the air conditioning unit 120 is mounted is characterized, and the details will be described below.
[0022]
The inside / outside air switching unit 110 is disposed in the vehicle compartment 30 so as to be above the tunnel portion 20, further extends from the instrument panel 50, and is housed in a center console 40 provided between a driver's seat and a passenger seat. I am trying to be. A slit 41 is provided on a surface of the center console 40 that faces the inside air inlet 111, and the inside air inlet 111 communicates with the vehicle compartment 30.
[0023]
An opening 21 is formed above the tunnel portion 20, and an outside air inlet 112 of the inside / outside air switching unit 110 is connected to the opening 21 so as to communicate with the inside of the tunnel portion 20.
[0024]
Next, operations and effects based on the above configuration will be described. When the inside / outside air switching door 114 is rotated to close the inside air introduction port 111, outside air leading into the tunnel section 20 is introduced into the air conditioning unit 120 from the opening 21 below the vehicle compartment 30 and the outside air introduction port 112. Air conditioning using outside air (outside air mode) is performed.
[0025]
On the other hand, when the inside / outside air switching door 114 is rotated in the opposite direction to the above and closes the outside air introduction port 112, the inside air of the cabin 30 is introduced into the air conditioning unit 120 from the slit 41 and the inside air introduction port 111, and this inside air is used. Air conditioning (inside air mode) is performed. Here, since the outside air inlet 112 is opened downward, there is no direct application of the ram pressure during traveling. Therefore, when the outside air inlet 112 is closed, the traveling air flows through the inside / outside air switching unit 110. Can be prevented from invading the inside.
[0026]
Further, since the inside / outside air switching unit 110 is provided at the center of the vehicle interior 30, the passenger comfort of the passenger seat can be improved compared to the related art.
[0027]
Further, the inside / outside air switching unit 110 can be accommodated in the center console 40 in conformity with the tunnel section 20, and can be installed with good appearance without being exposed in the vehicle interior 30.
[0028]
(2nd Embodiment)
FIG. 3 shows a second embodiment of the present invention. The second embodiment is obtained by adding a cover 130 to the first embodiment.
[0029]
The cover 130 is a flat plate member, and is provided so as to cover the vicinity of the opening 21 and the outside air inlet 112 from below.
[0030]
This prevents a jumping object such as a stepping stone from entering the inside / outside air switching unit 110 from the outside air inlet 112 from the lower side of the vehicle, thereby preventing a problem caused by the jumping object.
[0031]
Note that the cover 130 is not limited to a flat plate member, and may have a plurality of openings (for example, a fine-grained net) smaller than the expected size of the flipped object. , The ventilation resistance of the cover 130 can be reduced.
[0032]
(Third embodiment)
FIG. 4 shows a third embodiment of the present invention. In the third embodiment, the performance of the condenser 140 is improved by utilizing the condensed water generated in the air conditioning unit 120 with respect to the second embodiment.
[0033]
A drain portion 121 for discharging condensed water generated when air is cooled in the air conditioning unit 120 is provided below the air conditioning unit 120 so as to pass through the tunnel portion 20. Below the drain portion 121, one end of the cover 130 is disposed so as to serve as a receiving portion. Further, the cover 130 crosses the opening 21 and the outside air inlet 112, and the other end is provided to be inclined toward the upper end of the condenser 140.
[0034]
As a result, the condensed water is supplied to the outside of the condenser 140, so that the condenser 140 can obtain a cooling effect and improve the refrigerant condensing ability.
[0035]
If a guide is provided on the cover 130 so as to distribute and guide the condensed water in the outer width direction of the condenser 140, the condenser 140 will be cooled as a whole. Can be improved.
[Brief description of the drawings]
FIG. 1 is a side view showing a state in which a vehicle air conditioner according to a first embodiment is mounted on a vehicle.
FIG. 2 is an arrow view showing the tunnel structure as viewed from a direction A in FIG. 1;
FIG. 3 is a side view showing a state in which a vehicle air conditioner according to a second embodiment is mounted on a vehicle.
FIG. 4 is a side view showing a state where a vehicle air conditioner according to a third embodiment is mounted on a vehicle.
FIG. 5 is a side view showing a state in which the inside / outside air switching unit according to the related art is mounted on a vehicle.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Engine 20 Tunnel structure part 30 Car room 40 Center console 100 Vehicle air conditioner 110 Inside / outside air switching unit 112 Outside air inlet 120 Air conditioning unit 130 Cover 140 Condenser

Claims (6)

A traveling wind introduced from the front of the vehicle is supplied to an engine (10) side through a tunnel structure (20) arranged to extend in the traveling direction at the center of the vehicle, and the engine (10) is driven by the vehicle. Applied to a cab-over vehicle mounted under the room (30),
For an air conditioning unit (120) that cools and heats the introduced air and blows out the air as conditioned air into the vehicle cabin (30), an inside / outside air switching unit that switches the air to be introduced into either inside air or outside air ( 110),
The inside / outside air switching unit (110) is disposed in the vehicle compartment (30) so as to be above the tunnel structure (20),
An air conditioner for a vehicle, wherein an outside air inlet (112) of the inside / outside air switching unit (110) is provided so as to communicate with the inside of the tunnel structure (20). The vehicle air conditioner according to claim 1, wherein the inside / outside air switching unit (110) is disposed in a center console (40) of the vehicle compartment (30). A cover (130) is provided in the vicinity of the outside air inlet (112) to prevent a thing jumped from below the vehicle from entering the inside / outside air switching unit (110). The vehicle air conditioner according to claim 1 or 2. The air conditioner according to claim 3, wherein the cover (130) is provided with an opening through which the air passes. A condenser (140) for condensing a refrigerant to be supplied to the air conditioning unit (120) is provided in front of the engine (10),
The cover (130) is arranged to guide condensed water generated when the air is cooled in the air conditioning unit (120) to the outside of the condenser (140). Item 4. The vehicle air conditioner according to item 3. The vehicle air conditioner according to claim 5, wherein the cover (130) is provided with a guide portion that guides the condensed water in a direction of an outer width of the condenser (140).

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