JP3696564B2 - Nozzles for vehicle wind defrosters - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a nozzle for a vehicle window or defroster that blows air on the inner surface of a window glass of an automobile or the like in order to eliminate frost or cloudiness generated on the inner surface of the window glass, and in particular, the temperature is controlled from an air conditioner. An air inlet connected to an air mixing chamber to which air is supplied, and an air outlet that opens toward the inner surface of the window / glass are provided at both ends, and the width along the width of the window / glass increases from the air inlet toward the air outlet. An approximately fan-shaped nozzle body, a central air duct that guides air from the air inlet to the air outlet, and both sides of the central air duct are arranged in the nozzle body. The present invention relates to a soot improvement comprising at least a pair of partition walls that are partitioned into a pair of side air ducts that guide air to the outlet.
[0002]
[Prior art]
Such a nozzle of a vehicle wind defroster is already known as disclosed in, for example, Japanese Patent Laid-Open No. 10-236153.
[0003]
[Problems to be solved by the invention]
As shown in FIG. 5, the conventional vehicle wind defroster nozzle 07 has a pair of partition walls 015 and 015 arranged linearly over the entire length from the air inlet 110 toward the air outlet 111. As shown in FIG. 6, a pair of partition walls 015 and 015 are arranged so as to extend from the air inlet 110 toward the air outlet 111 while being curved over the entire length thereof.
[0004]
However, in the case of FIG. 5, as soon as the air that has exited the air mixing chamber 06 flows into the inlet 110 of the nozzle 07, the path is immediately forced to widen by both the partition walls 015 and 015. Without following the guidance of the partition walls 015 and 015, it peels off from the partition walls 015 and 015 on the central air duct side, and stagnation occurs in the inner surface of the wind glass 1 on the downstream side, thereby causing the inner surface of the wind glass 1 to stagnate However, there is a drawback that the heights of the frost / defrosting areas A ₁ and A _{2 that} expand with the passage of time are uneven along the width direction of the window glass 1. Therefore, if the opening angle of the partition walls 015 and 015 is reduced to suppress the separation of air from the partition walls, the frost / fogging area along the width direction of the window / glass 1 becomes narrower, and at the end in the width direction. Inconvenience that frost / fogging effect is significantly reduced.
[0005]
On the other hand, in the case of FIG. 6, the separation of air from the partition walls 015 and 015 can be prevented, and the frost / fogging area along the width direction of the window / glass 1 is narrow in the same manner as described above. There is a disadvantage that the frost / fogging effect is weak at the edges.
[0006]
The present invention has been made in view of such circumstances, the air-guiding function of the both partition walls is good, and the frost / defrosting area on the inner surface of the window glass 1 can be made uniform along the lateral width direction. An object of the present invention is to provide a nozzle for the vehicle wind defroster.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the present invention has an air inlet at both ends connected to an air mixing chamber supplied with temperature-controlled air from an air conditioner and an air outlet opening toward the inner surface of the window glass. And a nozzle body having a substantially fan shape in which the width along the width of the window glass extends from the air inlet toward the air outlet, and a central air guide that guides air from the air inlet to the air outlet in the nozzle body. A vehicle wind defroster comprising a road and at least a pair of partition walls which are arranged on both sides of the central air guide passage and are partitioned into a pair of side air guide passages for guiding air from the air inlet to the air outlet. In the nozzle, the pair of partition walls extend from the air inlet or in the vicinity thereof to a straight line extending perpendicularly to the opening surface of the air outlet and halfway through each air duct. And a pair of curved wall portions that continuously extend from the end of these straight wall portions toward the air outlet and curve in a divergent shape toward the air outlet side. The cross-sectional area perpendicular to each ventilation direction of the road and both side air ducts is substantially constant over the entire length, and the cross-sectional area of the central air duct is larger than that of each side air duct. The first feature is that it is formed as described above.
[0008]
According to this first feature, the air that has flowed from the air mixing chamber into the central air duct and the side air ducts is initially rectified all at once by parallel straight walls toward the air outlet, and then curved. Since the wall is gradually expanded to the left and right by the wall, the air is blown over the entire width of the window and glass from the air outlet without being separated from the curved wall, and is spread over the entire width of the window and glass. Can be made uniform in height. In particular, the curved wall part can be bent greatly to the left and right outside because it is difficult for air separation to occur, and the defrosting and defrosting effect can be enhanced at both ends of the defrosting and defrosting area as well as the central part. .
[0009]
In addition, the cross-sectional area perpendicular to the ventilation direction of the central air duct and both side air ducts is set to be almost constant over the entire length, eliminating air velocity loss in each air duct, -The defrosting effect can be enhanced, and in addition, the cross-sectional area of the central air duct is set larger than that of each side air duct, so that the amount of air ejected from the central air duct is frost / cloudy By corresponding to the wide central portion of the defrosting area, the frost / defrosting area can be made more uniform.
[0010]
In addition to the first feature, the present invention has a second feature that a common air outlet chamber communicating with the central air guide passage and the side air guide passage is formed immediately before the air outlet.
[0011]
According to this second feature, the air that has passed through the central air duct and both side air ducts is mixed appropriately in the inlet chamber and then ejected from the air outlet. By preventing the air blown from the air duct from forming a boundary, the occurrence of unevenness in the frost / defrost area can be suppressed.
[0012]
Furthermore, in addition to the first or second feature, the present invention has a third feature that a common air inlet chamber communicating with the central air guide passage and the side air guide passage is formed immediately after the air inlet. And
[0013]
According to the third feature, air is mixed also in the inlet chamber, and the air mixing effect is enhanced in cooperation with the air mixing chamber, and the air temperature ejected from the central air duct and the side air ducts is controlled. Uniformity can be further improved.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described based on an embodiment of the present invention shown in the accompanying drawings.
[0015]
1 is a perspective view of a nozzle of a vehicle wind defroster according to the present invention, FIG. 2 is a cross-sectional view taken along line 2-2 of FIG. 1, FIG. 3 is a cross-sectional view taken along line 3-3 of FIG. It is a 4-line sectional view.
[0016]
First, in FIGS. 1 to 3, a defroster 3 is attached to an instrument panel 2 disposed below a front window glass 1 of an automobile. The defroster 3 includes an air mixing chamber 6 to which a blower duct 5 of an air conditioner unit 4 is connected, and a nozzle 7 that guides air from the air mixing chamber 6 and blows it to the inner surface of the front window glass 1. It is constructed, and air blown to the inner surface of the front window glass 1 eliminates frost and fog generated on the inner surface.
[0017]
The nozzle 7 has an air inlet 10 connected to the outlet of the air mixing chamber 6, and an air outlet 11 that opens at the upper surface of the instrument panel 2 and faces the lower inner surface of the front window glass 1 at both ends, and A nozzle body 13 having a substantially fan shape is provided so that the lateral width of the front window glass 1 along the lateral width direction (left-right direction) extends from the air inlet 10 toward the air outlet 11. A central air guide path 13 that guides air from the air inlet 10 toward the air outlet 11 by the partition walls 15, 15 is disposed on both the left and right sides of the central air guide path 13, and from the air inlet 10 to the air outlet 11. It is divided into at least a pair of left and right side air guide passages 14 and 14 that guide air toward it.
[0018]
The end portions on the air inlet 10 side, that is, the start ends of both the partition walls 15, 15 are arranged inwardly from the air inlet 10 by a predetermined distance a, so that immediately after the air inlet 10, the central air guide path 13 and both side portions A common inlet chamber 16 communicating with the air guide paths 14 and 14 is formed. Moreover, the air outlet 11 side ends of both the partition walls 15, 15, that is, the terminal ends are arranged inwardly by a predetermined distance b from the air outlet 11, so that the central air guide path 13 and both side portions are disposed immediately before the air outlet 11. A common outlet chamber 17 communicating with the air guide paths 14 and 14 is formed.
[0019]
Moreover, both the partition walls 15 and 15 are perpendicular | vertical to the opening surface of the air outlet 11 from each said start end, and a pair of straight wall part 15a, 15a extended linearly to the middle of each wind guide path, and these straight wall parts 15a. , 15a toward the air outlet 11 to the end and a pair of curved wall portions 15b, 15b that curve to the left and right as it goes to the air outlet 11 side.
[0020]
In addition, by gradually flattening the cross-sectional shape perpendicular to the ventilation direction of the central air duct 13 and the side air ducts 14 and 14 from the air inlet 10 toward the air outlet 11, the central air duct 13 and The cross-sectional area of the side air ducts 14 and 14 is set to be substantially constant over the entire length, and at the same time, the cross-sectional area of the central air duct 13 is set to be larger than that of the side air ducts 14 and 14.
[0021]
As shown in FIG. 2, the nozzle body 13 is appropriately bent in the longitudinal direction of the vehicle according to the layout of the air mixing chamber 6 or the like in the longitudinal direction.
[0022]
The central air guide path 13 is provided with one or a plurality of straight rectifying walls 18 that are arranged at a central position between the left and right curved wall portions 15 b and 15 b and extend perpendicularly to the opening surface of the air outlet 11.
[0023]
As shown in FIGS. 3 and 4, the nozzle body 13 includes a channel body 20 having a U-shaped cross section in which outer walls 20s and 20s are integrally connected to both left and right ends of a ceiling wall 20t, a pair of left and right partition walls 15, 15 is integrally formed with a bottom plate 21 that covers the open surface of the nozzle body 13 and is molded from a synthetic resin. At that time, the left and right outer walls 20 s, 20 s of the channel body 20 are composed of a straight wall portion and a curved wall portion corresponding to the straight wall portions 15 a, 15 a and the curved wall portions 15 b, 15 b of the respective partition walls 15, 15. Formed. The nozzle body 13 and the bottom plate 21 are joined by welding flanges 22 and 23 formed on the peripheral edges thereof.
[0024]
Next, the operation of this embodiment will be described.
[0025]
When the frost / defrosting air temperature-controlled by the air conditioner unit 4 is pumped to the air mixing chamber 6 through the air duct 5, the air is mixed in the chamber 6 and the temperature of each part is made uniform. Furthermore, since this air moves from the air inlet 10 of the nozzle 7 to the inlet chamber 16 and mixing is also performed here, the air temperature is made more uniform. This air is divided into the central air guide passage 13 and the left and right side air guide passages 14, 14, and is blown out from the air outlet 11 toward the inner surface of the front window glass 1, and frost generated on the inner surface. The frost / fogging area expands to A ₁ and A ₂ as time elapses.
[0026]
By the way, both the partition walls 15, 15 that define the central air guide path 13 and the both side air guide paths 14, 14 are perpendicular to the opening surface of the air outlet 11 from the respective start ends as described above. A pair of straight wall portions 15a, 15a extending linearly to the middle of the road, and extending from these straight wall portions 15a, 15a to the end toward the air outlet 11, and curved toward the left and right as the air outlet 11 is widened. Therefore, the air flowing into the central air guide passage 13 and the both side air guide passages 14 and 14 is initially air outlet 11 through the parallel straight wall portions 15a and 15a. Are then rectified all at once, and then gradually expanded to the left and right by the curved wall portions 15b and 15b, so that the air passing downstream of the central air duct 13 and the side air ducts 14 and 14 Part 15b Without causing the peeling from 15b, from the air outlet 11 over the left and right entire width of the front window glass 1 will be ejected, defrosting-fogging over the left and right entire width of the front window glass 1 region A _1, the A ₂ The height can be made uniform. In particular, since the curved walls 15b and 15b are less likely to cause air separation, it is possible to increase the degree of curvature toward the left and right outer sides, and the frost and fogging at both right and left ends of the frost and fogging areas A ₁ and A ₂ are also possible. The removal effect can be enhanced in the same way as in the central portion, and the visibility of the driver of the automobile can be improved early.
[0027]
Moreover, since the cross-sectional area perpendicular to the ventilation direction of the central air guide passage 13 and the side air guide passages 14 and 14 is set to be substantially constant over the entire length, the air in each of the air guide passages 13, 14, and 14 is set. In addition, the defrosting and defogging effect can be enhanced, and the cross sectional area of the central air guide 13 is set larger than that of the side air guides 14 and 14. amount of air ejected from the air passage 13 is supposed to correspond to the wide central portion frost-defogging area a _1, a _2, to a uniform frost-defogging area a _1, a ₂ better Can do.
[0028]
Further, immediately before the air outlet 11, a common outlet chamber 17 is provided for the central air guide passage 13 and the both side air guide passages 14, 14, so that it passes through the central air guide passage 13 and the both side air guide passages 14, 14. The air thus mixed is moderately mixed in the inlet chamber 16 and then ejected from the air outlet, preventing the air ejected from the central air duct 13 and the air ducts 14 and 14 from forming a boundary between each other. The occurrence of unevenness in the frost / defrosting areas A ₁ and A ₂ can be suppressed.
[0029]
The present invention is not limited to the above embodiment, and various design changes can be made without departing from the scope of the invention.
[0030]
【The invention's effect】
As described above, according to the present invention, the air inlet connected to the air mixing chamber to which the temperature-controlled air is supplied from the air conditioner, and the air outlet opening toward the inner surface of the window glass are provided at both ends. And a nozzle body having a substantially fan shape in which the width along the width of the wind glass extends from the air inlet toward the air outlet, and a central air guide path for guiding air from the air inlet to the air outlet in the nozzle body. In a vehicle wind defroster nozzle, comprising at least a pair of partition walls, which are arranged on both sides of the central air duct, and which are also partitioned into a pair of side air ducts for guiding air from the air inlet to the air outlet The pair of partition walls are a pair of straight lines starting from the air inlet or the vicinity thereof and extending linearly to the middle of each air guide path perpendicular to the opening surface of the air outlet And a pair of curved wall portions that continuously extend from the end of these straight wall portions toward the air outlet and bend toward the air outlet side. The partial air ducts are formed so that the cross-sectional area perpendicular to each ventilation direction is substantially constant over the entire length, and the cross-sectional area of the central air duct is larger than that of each side air duct. As a result, the air passing from the air mixing chamber through the central air duct and both side air ducts is blown over the entire width of the window glass from the air outlet without being separated from the curved wall. It is possible to make the height of the hoar frost / defrost area uniform. In particular, the curved wall part can be bent greatly to the left and right outside because it is difficult for air separation to occur, and the defrosting and defrosting effect can be enhanced at both ends of the defrosting and defrosting area as well as the central part. . In addition, the cross-sectional area perpendicular to the ventilation direction of the central air duct and both side air ducts is set to be almost constant over the entire length, eliminating air velocity loss in each air duct, -The defrosting effect can be enhanced, and in addition, the cross-sectional area of the central air duct is set larger than that of each side air duct. By corresponding to the wide central portion of the area, the frost / defrost area can be made more uniform.
[0031]
According to the second feature of the present invention, in addition to the first feature, a common air outlet chamber communicating with the central air duct and the side air duct is formed immediately before the air outlet. It is possible to prevent the air blown from the central air duct and the air ducts on both sides from forming a boundary, and to suppress the occurrence of unevenness in the frost / defrost area.
[0032]
Furthermore, according to the third feature of the present invention, in addition to the first or second feature, a common air inlet chamber communicating with the central air duct and the side air duct is formed immediately after the air inlet. Therefore, the air mixing effect can be enhanced by the cooperation of the air mixing chamber and the inlet chamber, and the temperature of the air ejected from the central air guide passage and the side air guide passages can be made more uniform.
[Brief description of the drawings]
1 is a perspective view of a nozzle of a vehicle wind defroster according to the present invention. FIG. 2 is a sectional view taken along line 2-2 in FIG. 1. FIG. 3 is a sectional view taken along line 3-3 in FIG. FIG. 5 is a cross-sectional view taken along line -4. FIG. 5 is a diagram illustrating the action of a conventional vehicle wind defroster nozzle. FIG. 6 is a diagram illustrating the function of a nozzle of another conventional vehicle wind defroster.
1 ··· Window, Glass 2 ··· Air conditioner 3 ··· Defroster 6 ··· Air mixing chamber 7 ··· Nozzle 10 ··· ··· Air inlet 11 ··· Air outlet 12 · · · Nozzle body 13 ··· Central air guide passage 14 ··· Side air guide passage 15 ··· Partition 15a・ ・ ・ Straight wall portion 15b ・ ・ ・ Curved wall portion 16 ・ ・ ・ Inlet chamber 17 ・ ・ ・ Exit chamber

Claims (3)

An air inlet (10) connected to an air mixing chamber (6) supplied with temperature-controlled air from an air conditioner (4), and an air outlet (11) opening toward the inner surface of the window glass (1) A cylindrical nozzle body (12) having a substantially fan shape having a width extending along the width of the window glass at both ends and extending from the air inlet (10) toward the air outlet (11), and the nozzle body ( 12) is arranged inside the air guide (13) for guiding air from the air inlet (10) to the air outlet (11) and on both sides of the air guide (13). In a vehicle window / defroster nozzle comprising at least a pair of partition walls (15, 15) partitioned into a pair of side air ducts (14, 14) for guiding air from the air outlet (11) to
The pair of partition walls (15, 15) is a pair of linearly extending from the air inlet (10) or in the vicinity thereof to the air outlet (11) perpendicularly to the opening surface of the air outlet (11). Straight wall portions (15a, 15a) and continuously extending from the end of these straight wall portions (15a, 15a) toward the air outlet (11), and curved toward the end of the air outlet (11). A pair of curved wall portions (15b, 15b), and the central air guide passage (13) and both side air guide passages (14, 14) have a total cross-sectional area perpendicular to the air flow direction. The vehicle windshield is characterized in that it is substantially constant over the distance between the central air guide passage (13) and the cross sectional area of the central air guide passage (13) is larger than that of each side air guide passage (14, 14). Defroster nozzle. The nozzle for a wind defroster for a vehicle according to claim 1,
A common air outlet chamber (17) communicating with the central air duct (13) and the side air ducts (14, 14) is formed immediately before the air outlet (11). Nozzle for wind defroster. In the window / defroster nozzle for a vehicle according to claim 1 or 2,
A vehicle window, characterized in that a common air inlet chamber (16) communicating with the central air duct (13) and the side air duct (14) is formed immediately after the air inlet (10). Defroster nozzle.

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