CN204687789U - Vehicular air-conditioning apparatus - Google Patents

Abstract

The utility model provides a vehicle air-conditioning device, which can blow out air-conditioning air in an air distribution mode that places emphasis on the front seats, which are frequently used at the rear and front seats. The vehicle air conditioner of the present utility model is equipped with a roof duct (25) on the roof (1a) of the vehicle, so that the adjusted air-conditioning air passes through the roof duct to the rear side of the vehicle, which is arranged and installed in the front and rear direction of the vehicle. The front side seat (11) and the rear side seat (13) are blown out, and the roof duct has: a transition duct part (27), which is located between the front side seat and the rear side seat in the roof of the vehicle, at the width of the vehicle Directional transition arrangement; introduction duct part (29), which introduces air-conditioned air from one end of the vehicle width direction of the transition duct part; The air is blown separately from the transition duct part to the front seat and the rear seat; the air distribution rate changing part (37), which uses more air-conditioning air blown from the front blowing part than from the rear blowing part The ratio distributes the flow rate of the conditioned air toward the front blowing part and the rear blowing part.

Description

Vehicle Air Conditioning Unit

technical field

The utility model relates to a vehicle air conditioner with a roof duct.

Background technique

In an automobile (vehicle) having two rows of seats such as the second seat and the third seat behind the front seat (first seat) such as a commercial vehicle, except for the front seat (first seat), ) is equipped with an air-conditioning unit for supplying conditioned air to the front and rear seats (2nd seat, 3rd seat) on the rear side.

In this air conditioner on the rear side, the following structure is used: a roof duct is arranged on the roof of the vehicle, an air conditioning unit is installed on the rear side of the car, and the conditioned air generated by the air unit passes through the roof duct, and the first row arranged in the front and rear direction is used. 2 seats, 3rd seat are blown out.

On the roof duct of this rear side air conditioner, there is the following structure: as disclosed in Patent Documents 1 and 2, an introduction duct is provided along the rear pillar, and the second seat and The roof distribution between the third seats is provided with a main duct, and the conditioned air from the air-conditioning unit is passed through the introduction duct and the main duct, and the air from the front seats (second seats) installed on the main duct is used. Air outlet, the rear seat (3rd seat) blows out from the outlet.

[Patent Document 1] Japanese Patent Application Laid-Open No. 11-254950

[Patent Document 2] Japanese Patent Application Laid-Open No. 2002-264634

Technical problems to be solved by the utility model

However, in a vehicle such as a commercial vehicle that has seats (second seat, third seat) arranged front and rear on the rear side, the rear side seats are mainly used as the second seat, and the third seat is rarely used. .

However, the air conditioner on the rear side is supposed to blow air-conditioned air to the second and third seats at the same air volume (flow rate) at all times when there are passengers in the second and third seats. It does not take into account the frequency of use of the rear seats.

Therefore, an object of the present invention is to provide a vehicle air conditioner capable of blowing out air-conditioned air in an air distribution system that places emphasis on the front seats, which are frequently used on the rear front and rear seats.

Utility model content

The focus of the present invention is: a vehicle air conditioner, which is equipped with a roof duct on the top of the vehicle, and blows air through the roof duct to the front seats and rear seats arranged and installed on the rear side of the vehicle according to the front and rear direction of the vehicle. The air-conditioned air is characterized in that the roof duct includes: a transition duct part, which is located between the front seat and the rear side seat in the roof of the vehicle, and is arranged in transition in the vehicle width direction; One end in the width direction of the vehicle introduces air-conditioned air; the front blowing part and the rear blowing part blow the air-conditioned air introduced into the transition duct part to the front and rear seats from the transition duct part; the air distribution rate The changing unit distributes the flow rate of the conditioned air toward the front blowing unit and the rear blowing unit so that the conditioned air blown out from the front blowing unit is larger than the conditioned air blown out from the rear blowing unit.

Preferably, the front side blowing part is respectively branched from both ends of the transition duct part in the vehicle width direction and arranged on the front side of the vehicle along the roof side part, and has a front side duct part for blowing air-conditioned air to the front seat; The rear side blowing part is branched from both ends of the transition duct part in the vehicle width direction and arranged on the rear side of the vehicle along the roof side part, and has a rear side duct part that blows air-conditioned air to the rear seats; the air distribution rate The changing part has: a first changing part for changing the flow rate ratio between the front side duct part and the rear side duct part arranged on the near side from the introduction duct part; The ratio of the flow rate in the front side duct part and the rear side duct part on the far side from the introduction duct part.

Preferably, the air distribution rate changing part further has a third changing part, which is arranged in a direction farther away from the introduction duct part than the flow rate of the front side duct part and the rear side duct part which are arranged closer to the introduction duct part. Air distribution is performed at a rate that the flow rate of the farther front duct portion and the rear duct portion is greater.

Preferably, the first changing part is formed in the introduction duct part, and has an arc-shaped curved part that deflects the streamline of the air-conditioned air introduced into the transition duct part to the side away from the rear side duct part on the one side by centrifugal force. .

Preferably, the second changing part is for changing the opening area of the branch port leading to the rear duct part to be smaller than the opening area of the branch port leading to the front duct part.

Preferably, the third changing part is configured to increase the opening area on the other side of the transition duct part compared to the opening area on one side of the transition duct part, with a part communicating with the introduction duct part as a boundary.

Preferably, the transition duct portion is formed by a flat shaped duct.

Utility Model Effect

According to the present invention, by changing the flow ratio of the air-conditioned air, the air volume (flow rate) of the air-conditioned air toward the rear front seat (second seat) is higher than that toward the rear rear seat (third seat). The air volume (flow rate) of the air-conditioned air is large.

Therefore, the rear side of the vehicle can blow out air-conditioned air in an air distribution method that places emphasis on the front seats (second seats) on the rear side that are frequently used, and the rear of the vehicle can be effectively adjusted according to the frequency of use of the seats. side air.

Description of drawings

Fig. 1(a) shows the overall plan view of the air conditioner on the rear side of the vehicle according to an embodiment of the present invention, and Fig. 1(b) is a cross-sectional view illustrating the first modified part;

Figure 2 shows an overall oblique view of the roof duct of the air conditioner;

FIG. 3 shows a perspective view of main parts of the roof duct viewed from the direction of arrow A in FIG. 2 .

Symbol Description

1a roof

11,13 1st rear seat, 2nd rear seat (rear front and rear seats)

23 air conditioning unit

25 roof duct

27 Transition duct department

29 Introduction Catheter

31a Front duct part (front blowout part)

35a Rear side conduit part (rear side blowout part)

39a, 39b, 39c 1st change part, 2nd change part, 3rd change part (air distribution rate change part)

Detailed ways

Next, the present utility model will be described based on an embodiment shown in Fig. 1(a), (b) to Fig. 3 . Fig. 1 (a) is the rear side air-conditioning device assembled in the vehicle of applying the utility model such as commercial vehicle, Fig. 1 (b) shows a part of the roof duct of this air-conditioning device, Fig. 2 shows the whole body of this air-conditioning device, Fig. 3 shows the roof duct (part) viewed from the direction of arrow A in FIG. 2 .

The main structure of commercial vehicle is described, and 1 among Fig. 1 (a) is the vehicle body of commercial vehicle (vehicle), and 3 is the tailgate of the rear opening (not shown) of this vehicle body 1, and 5 is Front doors of the vehicle body 1 provided on both sides in the vehicle width direction, 7 are rear doors.

In addition, on the floor (not shown) formed in the compartment of the vehicle body 1, a front seat 9 (consisting of a driver's seat and a passenger seat) is provided as a first seat located on the front side. . On the rear side of the rear floor of the front seat 9, a first rear seat 11 and a second rear seat 13 are provided as a second seat and a third seat. Here, the first rear seat 11 is constituted by a three-person seat, and the second rear seat 13 is constituted by a two-person seat. That is, it has three front and rear rows of seats that can seat seven passengers.

Incidentally, each of the front seat 9, the first rear seat 11, and the second rear seat 13 is equipped with a three-point seat belt device (not shown) allocated to the number of persons (7 persons). 15 shows a seat belt delivery part (feeding part) in the three-point seat belt device for the center seat of the first rear seat 11 among them. The seat belt conveying unit 15 is configured by assembling a pre-tensioner 17 to a roof portion 1a of a vehicle compartment (as shown in FIG. 2 ), for example, a roof portion between the first rear seat 11 and the second rear seat 13 . In addition, 19 denotes a pre-tensioner bracket supporting the pre-tensioner 17, and 21 denotes a guide ring for guiding the seat belt 22 pulled out from the pre-tensioner 17 to the interior of the vehicle compartment.

The rear side of this commercial vehicle is provided with the special-purpose air conditioner 23 that air-conditions the front and rear two rows of seats on the rear side. In addition, on the front side of the commercial vehicle, although not shown in the figure, an air conditioner dedicated to the front seats is provided. Wherein the whole of the air conditioner 23 on the rear side is shown in FIG. 2 .

The air conditioner 23 has a roof duct 25 housed inside the roof 1a of the vehicle body 1 as shown in FIG. 1(a) and FIG. The air-conditioning unit 51 of the wall part between the lower part of the rear pillar 1b on the right side (both on the side of the driver's seat).

Among them, the air conditioning unit 51 has, for example, a heating device 53 including a blower and a heater (both not shown), and a cooling device 55 including an evaporator and an air mixing unit (both not shown). Furthermore, an inlet portion 53a formed in the heating device 53 opens into the vehicle interior. In other words, the air in the vehicle compartment introduced from the inlet portion 53a is adjusted to a predetermined temperature by the blower, the heater, the evaporator, and the air mixing unit.

In addition, the top duct 25 has a bracket (not shown) that supports the tensioner bracket 19 and the guide ring 21 in the top 1a shown in FIG. 1(a) and FIG. A transition duct portion 27 located between (the front seat) and the second rear seat 13 (rear side seat) and an introduction duct portion 29 for introducing conditioned air to the transition duct 27 .

Among them, the transition duct portion 27 is formed of a flat-shaped duct arranged between the side member portions 1 c on both sides in the vehicle width direction of the roof side portion. Incidentally, the transition duct portion 27 is inserted between a roof panel forming the outer surface of the roof 1a and a headliner (both not shown) forming the inner surface of the roof 1a.

The introduction duct portion 29 is inserted along a gap between the rear pillar portion 1b on the right side of the vehicle body 1 and a pillar trim (not shown) inside the rear pillar portion 1b. The upper end portion of the introduction duct portion 29 extends forward along the side member portion 1c on the right side (driver's seat side), and communicates with the right side portion of the transition duct portion 27 . The lower end portion of the introduction duct portion 29 communicates with an outlet portion 56 of an air conditioning unit 51 serving as an outlet for conditioned air. Accordingly, the conditioned air from the air conditioning unit 51 is introduced into the transition duct portion 27 from the right side (one side) in the vehicle width direction of the transition duct portion 27 . In other words, the conditioned air is distributed to both ends of the transition duct portion 27 .

The transition duct portion 27 has a front blowing portion 31 and a rear blowing portion 35 that blow out to the first rear seat 11 and the second rear seat 13 separately. Among them, the front side blowing part 31 is constituted by, for example, a pair of front side duct parts 31 a shown in FIG. 1( a ) and FIG. 2 . Each of the front duct portions 31 a is formed of branch ducts branching from both ends of the transition duct portion 27 in the vehicle width direction and extending toward the vehicle front side along the side member 1 c (roof side portion). Air outlets 31 b facing the first rear seats 11 are respectively formed at the distal ends of the front duct portions 31 a, and air-conditioned air is blown toward the first rear seats 11 from above. With the arrangement of the front duct portion 31a, an area where a sunroof (not shown) can be installed above the first rear seat 11 is ensured, and the same is applied regardless of the specification with a sunroof installed or the specification without a sunroof. Blow out the structure.

The rear side blowing part 35 is comprised by a pair of rear side duct part 35a shown, for example in FIG.1(a), FIG.2, and FIG.3. The rear duct portion 35 a is formed of branch ducts that branch from both ends of the transition duct portion 27 in the vehicle width direction and extend toward the vehicle rear along the side member 1 c (roof side portion). Air outlets 35 b facing the second rear seats 13 are respectively formed at the distal ends of the rear duct portions 35 a, and air-conditioned air is blown toward the second rear seats 13 from above. Due to the arrangement of the rear duct portion 35a, the conditioned air is also blown from the side to the second rear seat 13 .

The roof duct 25 is provided with an air distribution rate changer 37 that changes the air-conditioning rate from the air-conditioning unit 51 toward each of the front duct 31 a (front blower 31 ) and the rear duct 35 a (rear blower 35 ). air flow rate. The air distribution rate changing unit 37 is adopted by paying attention to the feature that the second rear seat 13 is extremely less frequently used than the first rear seat 11, and changes the flow rate of the conditioned air blown out from the front duct portion 31a to The air distribution ratio is higher than the conditioned air blown out from the rear duct portion 35a.

In order to set the air distribution ratio, the air distribution ratio changing unit 37 adopts a method of changing the flow ratio for each location. Therefore, as shown in FIG. 1( a ) and FIG. 2 , the air distribution rate changing part 37 has a first changing part 39 a that changes the front side of the front and rear blowing parts X1 arranged on the side closer to the introduction duct part 29 . The flow rate ratio in the duct part 31a and the rear side duct part 35a; the second changing part 39b, which changes the front side duct part 31a and the rear side in the front and rear blowout parts X2 arranged on the far side from the opposite side introduction duct part 29 The flow ratio in the conduit portion 35a. In addition, the air distribution ratio changing unit 37 further includes a third changing unit 39c that changes the flow ratio in the left-right direction (vehicle width direction) so that uniform conditioned air can be blown out.

That is, as shown in FIGS. 1( a ) to 3 , the first changing portion 39 a uses a structure in which the exit side of the rear duct portion 35 and the introduction duct portion 29 are adjacently arranged. Specifically, a curved portion 41 formed in a circular arc on the outlet side in the middle of the introduction duct portion 29 is used, and by the centrifugal force generated by the bent portion 41, the flow rate of the air-conditioned air toward the rear side duct portion 35a is reduced. A structure that suppresses the flow rate of the conditioned air toward the front duct portion 31a to be lower than that. Here, also as shown in FIG. 1(b), the curved portion 41 is formed in an arc shape in which the inner circumference is arranged on the side of the rear duct portion 35a and the outer circumference is arranged on the opposite side, and is also formed to have A curved duct portion in a shape in which the passage area gradually increases. The curved duct part (curved part 41) of this embodiment, as shown in Fig. The inner and outer wall portions 42a, 42b in the vehicle width direction are formed in an arc-shaped structure (r1>r2).

Through this curved portion 41, as shown by the arrows inside the curved portion 41 in FIGS. side). In other words, the flow rate of the conditioned air toward the branch port 36b, which is the inlet of the rear duct portion 35a, is reduced by the centrifugal force. And, by canceling the deflection of the streamline of the air-conditioned air after that (the air-conditioned air comes into contact with the transition duct portion 27), the flow rate of the air-conditioned air directed toward the branch port 36a, which is the entrance of the front duct portion 31a, is changed to be directed toward the branch port 36a, which is the entrance of the front duct portion 31a. The ratio of the flow rate of the conditioned air to the branch port 36b of the entrance of the side duct part 35a is large. Incidentally, in the communicating portion 29a where the transition duct portion 27 and the introduction duct portion 29 communicate, the wall portion that the introduced conditioned air contacts forms an arc portion 27a opposite to the curved portion 41 to suppress pressure loss during introduction.

As shown in Figure 1(a) and Figure 2, the second changing part 39b uses a method that changes the passage area (opening area) S2 of the branch port 36d as the entrance to the rear duct part 35a to the ratio of the passage area (opening area) S2 to the front A structure in which the passage area (opening area) S1 of the branch port 36c of the inlet of the side duct portion 31a is small (S1>S2). Accordingly, the flow rate of the conditioned air toward the front duct portion 31a is changed to a ratio greater than the flow rate toward the rear duct portion 35a.

On the other hand, the third changing portion 39c is formed by changing the opening area of the transition duct portion 27 on the front and rear blowing portion X1 side and the front and rear blowing portion X2 side, with the communicating portion 29a communicating with the introduction duct portion 29 as a boundary. Here, the transition duct portion 27 uses an increased opening area S3 from the communicating portion 29a toward the front and rear blowout portion X1 side compared to the branch port 36a and the branch port 36b that are one end (one side) of the duct portion 27. The conduit of the opening area S4 of the conduit part 27x on the side (the other side) of the front and rear blowing part X2 (S3<S4). By setting the opening areas S3 and S4, the amount of air-conditioned air blown out from the front and rear blowing portion X1 on the right side in the vehicle width direction closer to the introduction duct portion 29 is equal to the amount of air-conditioned air blown from the vehicle width direction farther from the introduction duct portion 29 . The air-conditioning air blown out from the front and rear blower X2 on the left side in the direction is the same in amount.

With the roof duct 25 configured in this way, the conditioned air generated in the air conditioning unit 51 is introduced from the introduction duct portion 29 to the transition duct portion 27 as shown in FIGS. 1 and 2 . Next, the transition pipe portion 27 reaches the front and rear blowout portions X1 and the front and rear blowout portions X2 on both sides in the vehicle width direction. Then, conditioned air is blown to the first rear seat 11 and the second rear seat 13 on the rear side from the pair of front duct parts 31a and the pair of rear duct parts 35a disposed on the roof side.

At this time, the introduction duct portion 29 is provided with a first changing portion that deflects the flow of conditioned air by centrifugal force to suppress the flow rate toward the rear duct portion 35a of the front and rear blowout portion X1 (the side closer to the introduction duct portion 29 ). 39a, changing the ratio of the blowing air volume. Accordingly, the air-conditioning air is blown out from the front and rear blowout parts X1 with a larger air volume than the front duct part 31a than the rear duct part 35a.

In addition, in the front and rear blowing parts X2 on the opposite side (the side farther from the introduction duct part 29), by setting the opening areas S1 and S2 of the branch ports 36c and 36d generated by the second changing part 39b, the amount of blown air volume can be changed. ratio. Accordingly, the conditioned air is blown out from the front and rear blowout parts X2 also at an air volume greater in the front duct part 31a than in the rear duct part 35a.

Moreover, the difference in the ventilation resistance generated by the positional relationship between the front and rear blowing parts X1 and the front and rear blowing parts X2 is adjusted by setting the opening areas S3 and S4 generated by the third changing part 39c. Therefore, the front and rear blowing parts X1 (from the introduction The side closer to the duct part 29) and the front and rear blowing part X2 (the side farther from the introduction duct part 29) both blow out the conditioned air at the same air volume.

Therefore, by changing the flow rate ratio of the conditioned air, the conditioned air can be blown out in an air distribution method that places emphasis on the frequently used first rear seats 11 (rear front seats). The frequency of use of the front seat 11 and the second rear seat 13 effectively adjusts the air on the rear side of the vehicle.

Furthermore, by using the first changing part 39a and the second changing part 39b, the ratios of the blown air volumes of the front duct part 31a and the rear duct part 35a branched from both ends of the transition duct part 27 in the vehicle width direction are respectively changed. The structure makes it easier to set the ratio of the blown air volume. In particular, since the ratio of the air volume is also changed at both ends of the transition duct portion 27 in the vehicle width direction by the third changing portion 39c, each of the front duct portion 31a and the rear duct portion 35a on both sides in the vehicle width direction can Maintain a better blowing air volume ratio. Of course, through the front side duct portion 31a and the rear side duct portion 35a that blow out the wind from the side roof, the specifications for installing the sunroof and the specifications for not installing the sunroof can be easily met, and the passenger can not be given a feeling of oppression (because the passenger's front There is no air outlet) to blow out air-conditioned air.

In particular, the first to third changing parts 39a to 39c are simple in structure and low in cost because they adopt the structure of changing the shape of the conduit (changing the arc shape and opening area, etc.).

In addition, each structure in the said embodiment, its combination, etc. are an example, and addition, omission, substitution, and other changes of a structure are naturally possible in the range which does not deviate from the gist of this invention. In addition, this invention is not limited to embodiment, and is limited only by "the scope of a claim." For example, in the above-mentioned embodiment, the flow ratio of the conditioned air from the introduction duct to the second seat and the third seat is changed by utilizing centrifugal force and changing the opening area of the duct, but the flow rate may be changed by other structures. ratio.

Claims (7)

1. A vehicle air conditioner, which is equipped with a roof duct on the top of the vehicle, and blows air through the roof duct to the front seats and rear seats arranged in the front and rear direction of the vehicle on the rear side of the vehicle. Conditioned air, characterized in that, The roof duct has: a transition duct portion located between the front seat and the rear seat in the roof of the vehicle, and disposed in a transitional manner in the vehicle width direction; an introduction duct portion for introducing the conditioned air from one end of the transition duct portion in the vehicle width direction; a front side blowing part and a rear side blowing part, which separately blow the air-conditioned air introduced into the transition duct part from the transition duct part to the front seat and the rear seat; An air distribution rate changing unit that compares air flow toward the front blowing unit and the rear blowing unit with a ratio of more air-conditioned air blown from the front blowing unit than from the rear blowing unit. The flow of conditioned air is distributed. 2. The vehicle air conditioner according to claim 1, wherein: The front blower is branched from both ends of the transition duct in the vehicle width direction, and is arranged on the front side of the vehicle along the roof side, and has a function of blowing air-conditioned air to the front seats. front side duct; The rear side blowing part is branched from both ends of the transition duct part in the vehicle width direction, and is disposed on the rear side of the vehicle along the roof side part, and has a function of blowing air conditioners to the rear seats. The rear side duct part of the air; The air distribution rate changing unit includes: a first changing unit for changing the flow rate ratio between the front duct portion and the rear duct portion arranged on the side closer to the introduction duct portion; part for changing the flow rate ratio in the front side duct part and the rear side duct part arranged on the other side farther from the introduction duct part. 3. The vehicle air conditioner according to claim 2, wherein: The air distribution rate changing unit further includes a third changing unit that adjusts the flow rate of the front duct portion and the rear duct portion toward the other side in comparison with the flow rate of the front duct portion and the rear duct portion toward the one side. Air distribution is performed at a rate that the flow rate of the side duct part is large. 4. The vehicle air conditioner according to claim 2, wherein: The first changing part is formed in the introduction duct part and has an arc shape that deflects the streamline of the air-conditioned air introduced into the transition duct part to the side away from the rear side duct part on the one side by centrifugal force. the bending part. 5. The vehicle air conditioner according to claim 2, wherein: The second changing part is for changing an opening area of a branch port leading to the rear duct part to be smaller than an opening area of a branch port leading to the front duct part. 6. The vehicle air conditioner according to claim 3, wherein: The third changing part is used to make the opening area of the other side of the transition duct part larger than the opening area of the transition duct part on the one side of the transition duct part, with the transition communication part communicating with the introduction duct part as the boundary. The opening area increases. 7. The vehicle air conditioner according to any one of claims 1 to 6, characterized in that: The transition duct portion is formed of a flat-shaped duct.