JP2014234936A - Air blower - Google Patents

Air blower Download PDF

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Publication number
JP2014234936A
JP2014234936A JP2013115251A JP2013115251A JP2014234936A JP 2014234936 A JP2014234936 A JP 2014234936A JP 2013115251 A JP2013115251 A JP 2013115251A JP 2013115251 A JP2013115251 A JP 2013115251A JP 2014234936 A JP2014234936 A JP 2014234936A
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Japan
Prior art keywords
cylinder
air
air outlet
cylindrical
outlet
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JP2013115251A
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Japanese (ja)
Inventor
新見 慎悟
Shingo Niimi
慎悟 新見
武志 青木
Takeshi Aoki
武志 青木
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ダイキョーニシカワ株式会社
Daikyonishikawa Corp
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Abstract

The present invention provides a simple structure for controlling the direction of wind in multiple directions without having a fin for controlling the direction of wind at an air outlet. SOLUTION: A blowout part (11) for blowing out air has a double structure comprising an inner cylinder (17) and an outer cylinder (19) each open at both ends, and is formed on the peripheral wall part of the inner cylinder (17). The direction of the wind blown out from the external air outlet (41) formed in the peripheral wall portion of the outer cylinder (19) through the internal air outlet (21) is changed from each open end of the outer cylinder (19) to the inner cylinder ( It was adjusted by the strength of the two air currents introduced into the interior of 17) and the rotational movement of the inner cylinder (17). [Selection] Figure 3

Description

  The present invention relates to a blower capable of adjusting a wind direction.

  Japanese Patent Application Laid-Open No. 2004-133620 discloses a blow grill apparatus that can adjust the wind direction in the left-right direction without providing vertical fins at the air blow outlet. This grill apparatus has a horizontal fin for adjusting the wind direction in the vertical direction at the outlet of the main flow path of the wind formed in the grill body, and has sub-flow paths each provided with a damper on both sides of the main flow path. In addition, by selectively opening and closing the dampers of the sub-channels with a dial mechanism, the wind from the sub-channels is supplied to the main channel to adjust the wind direction of the main channel in the left-right direction.

Japanese Utility Model Publication No. 4-52607

  However, in the grill device disclosed in Patent Document 1, in addition to having two sub-channels in addition to the main channel, a damper provided for each sub-channel separately from the mechanism for adjusting the air volume, and opening and closing these dampers Since a dial mechanism is required, the number of parts is large and the structure is complicated. Further, the grill device disclosed in Patent Document 1 still has a horizontal fin, and has not yet realized a simple air blower that has no fin for controlling the wind direction.

  The present invention has been made in view of such a point, and the object of the present invention is to provide a simple structure with no fins for controlling the direction of the wind at the air outlet, and the wind in multiple directions. The object is to provide a blower capable of controlling the direction.

  In order to achieve the above object, in the present invention, the blow-out portion for blowing out air has a double structure consisting of an inner cylindrical body and an outer cylindrical body that are open at both ends, and an inner portion formed on the peripheral wall portion of the inner cylindrical body. The direction of the wind blown from the external air outlet formed in the peripheral wall portion of the outer cylinder through the air outlet, the strength of the two air currents introduced into the inner cylinder from each open end of the outer cylinder, and the inner cylinder It was adjusted with the turning movement.

  Specifically, the present invention is directed to a blower capable of adjusting the direction of wind in multiple directions such as up, down, left, and right, and has taken the following solution.

  That is, 1st invention is equipped with the cylindrical blowing structure of the double structure comprised by the inner cylinder body and the outer cylinder body which both ends opened, respectively. An inner cylinder has an internal blower outlet which blows off the air introduced into the inside from both open ends. The outer cylindrical body has a main body portion having a housing space for rotatably accommodating the inner cylindrical body, and a blowout wall having a pair of opposing wall portions that protrude from the main body portion in a direction orthogonal to the cylinder length direction and face each other. A part. An external air outlet that communicates with the housing space of the main body is provided between the projecting ends of the pair of opposing walls in the blowout wall. The inner surfaces of the pair of opposing wall portions extend so as to approach each other toward the external air outlet from the main body portion side. Moreover, an outer cylinder blows the air which blown off from the internal blower outlet of the inner cylinder to the exterior from an external blower.

  Further, the first invention is a duct that is connected to both open ends of the outer cylinder and introduces air into the inner cylinder from each open end, a blow source that blows air into the duct, and this blow The amount of air that individually controls the amount of air blown from one open end of the outer tube and the amount of air blown from the other open end of the outer tube with respect to the amount of air blown into the inner tube through the duct by the source A control unit; and a rotation operation unit that operates a rotation operation of the inner cylinder. And the 1st invention changes the direction of the wind which blows off from an external blower outlet through an internal blower outlet by changing the blast volume from the open end of at least one of the outer cylinders to the inside of an inner cylinder with an air volume control means. The direction of the wind blown from the external air outlet through the internal air outlet is changed by changing the direction of the internal air outlet by changing the cylinder length direction of the cylinder and rotating the inner cylinder with the rotating operation means. It changes in the direction orthogonal to the cylinder length direction of this.

  2nd invention has the structure by which the air blower of 1st invention was provided with two or more cylindrical blowing structures, and the rotation operation means was provided for every cylindrical blowing structure. The outer cylinders of the plurality of cylindrical blowing structures are connected in series or in parallel by a duct. The second invention switches the inner cylinder of each cylindrical blowing structure to a closed state in which the inner outlet is closed by the inner surface of the main body portion of the outer cylinder by the turning operation by the turning operation means. It is possible.

  3rd invention is the air blower of 1st or 2nd invention, One edge of the direction orthogonal to the cylinder length direction of the inner cylinder in an internal blower outlet was located on the opening centerline of an external blower outlet A straight line connecting both end edges in the direction perpendicular to the cylinder length direction of the outer cylindrical body at the external air outlet, and both ends of the external air outlet and the end located on the opening center line of the external air outlet at the internal air outlet The straight line connecting the edges draws an equilateral triangle when viewed from the cylinder length direction of the outer cylinder.

  According to the first invention, in the cylindrical blowing structure, the air introduced into the inner cylindrical body from both open ends of the outer cylindrical body is directed from the both open end sides of the inner cylindrical body to the internal outlet, It flows into the external air outlet while colliding at a location corresponding to the air outlet, and is blown out from the external air outlet. Therefore, the direction of the wind blown from the external air outlet is changed in the cylinder length direction of the outer cylinder by changing the air volume from at least one open end of the outer cylinder relative to the inside of the inner cylinder by the air volume control means. Can do.

  Further, according to the first invention, by rotating the inner cylindrical body by the rotation operation means, the front state in which the internal air outlet faces straight to the external air outlet, and the internal air outlet is opposite to the front state than the front state. It can switch to the 1st inclination state which faced the wall part side, and the 2nd inclination state which the internal blower outlet faced the other opposing wall part side rather than the front state. When the inner cylinder is in the front state, the air blown from the internal blower outlet is blown straight through the external blower outlet in the front direction of the external blower outlet. In addition, when the inner cylinder is in the first inclined state and in the second inclined state, the air blown out from the internal air outlets is directed to the external air outlets along the inner surfaces of the different facing walls. It is guided and blown out in a direction crossing each other from the outside air outlet. Therefore, by changing the direction of the internal air outlet by the rotation operation of the inner cylinder, the direction of the wind coming out of the external air outlet through the internal air outlet can be changed in a direction perpendicular to the cylinder length direction of the outer cylinder. .

  Therefore, according to the first invention, it is possible to control the direction of the wind in multiple directions with a simple structure without having the fins for controlling the direction of the wind at the air outlet. Thereby, it is possible to realize a simple blower even when the external blow-out port for blowing out the air has only an opening, and it is possible to improve the design of the blower and thus a structure incorporating the blower.

  According to the second invention, by switching the inner cylinders of some of the cylindrical blowing structures to the closed state among the plurality of cylindrical blowing structures, air is selectively supplied only to the other cylindrical blowing structures. Can be blown out. In particular, when a plurality of cylindrical blowing structures are connected in parallel by a duct, the air is selectively blown out to any cylindrical blowing structure among the plurality of cylindrical blowing structures. The direction of the wind can be changed in multiple directions. Further, when a plurality of cylindrical blowing structures are connected in series by a duct, air is selectively blown out to only one arbitrary cylindrical blowing structure among the plurality of cylindrical blowing structures. Thus, the air blowing position by the blower can be changed and the direction of the wind can be changed in multiple directions.

  According to the third aspect of the present invention, the internal air outlet is prevented from becoming unstable due to the rotation of the inner cylinder described above due to the internal air outlet being too far from the external air outlet. When the edge is located on the opening centerline of the external air outlet closest to the external air outlet, the edge of the internal air outlet approaches the external air outlet and obstructs the wind blown from the external air outlet, reducing the air flow rate Will not be invited. Therefore, it is possible to achieve both the realization of accurate wind direction control by the turning operation of the inner cylinder and the securing of the amount of air blown from the external air outlet.

Drawing 1 is a front view which looked at an instrument panel provided with an air-conditioning unit containing a blower concerning an embodiment of the present invention from a vehicle interior. FIG. 2 is a cross-sectional perspective view showing a part of the cylindrical blowing structure and the air duct of the blower according to the embodiment of the present invention. FIG. 3 is an exploded perspective view showing a cylindrical blowing structure of the blower according to the embodiment of the present invention. FIG. 4 is a perspective view showing the cylindrical blowing structure and the rotation operation means of the blower according to the embodiment of the present invention from the back side. Fig.5 (a) is a longitudinal cross-sectional view in the Va-Va line | wire of FIG. 2 among cylindrical blowing structures. FIG.5 (b) is a longitudinal cross-sectional view in the Vb-Vb line | wire of FIG. 2 among cylindrical blowing structures. FIG.5 (c) is a cross-sectional view in the Vc-Vc line | wire of FIG. 2 among cylindrical blowing structures. 6 (a) to 6 (c) are vertical cross-sectional views corresponding to FIG. 5 (a) showing valuations for controlling the wind direction in the vertical direction in the blower according to the embodiment of the present invention. 7 (a) and 7 (b) are longitudinal sectional views corresponding to FIG. 5 (a) showing the valuation of the vertical wind direction control in the blower according to the embodiment of the present invention. 8 (a) to 8 (c) are cross-sectional views corresponding to FIG. 5 (c) showing a valuation of the wind direction control in the left-right direction in the blower according to the embodiment of the present invention. 9 (a) and 9 (b) are cross-sectional views corresponding to FIG. 5 (c) showing the valuation of the left and right wind direction control in the blower according to the embodiment of the present invention. FIG. 10: is a perspective view which shows the inner cylinder body of the air blower which concerns on the modification 1 of embodiment of this invention from the back side. FIG. 11: is a cross-sectional view of the location corresponding to FIG.5 (c) which shows the cylindrical blowing structure of the air blower which concerns on the modification 1 of embodiment of this invention. FIG. 12 is a front view illustrating a configuration of a wind blowing portion of the blower according to the second modification of the embodiment of the present invention. FIG. 13: is a longitudinal cross-sectional view of the location corresponding to Fig.5 (a) which shows the cylindrical blowing structure of the air blower which concerns on the modification 2 of embodiment of this invention. FIG. 14 is a front view illustrating a configuration of a wind blowing portion of a blower according to Modification 3 of the embodiment of the present invention.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings. The following embodiments are essentially preferable examples, and are not intended to limit the scope of the present invention, its application, or its use. In the present specification, for convenience of explanation, the front side in the vehicle longitudinal direction is referred to as “front”, the rear side as “rear”, the left side in the vehicle width direction as “left”, and the right side as “right”.

  In this embodiment, an air conditioning unit for a vehicle to which the air blower according to the present invention is applied will be described as an example. FIG. 1 is a front view of an instrument panel 1 (indicated by a two-dot chain line) in which the vehicle air conditioning unit 2 is incorporated, as viewed from the passenger compartment.

  The instrument panel 1 is provided on the vehicle rear side (vehicle compartment side) of the dash panel that partitions the engine room and the vehicle compartment. The illustrated vehicle is a so-called right-hand drive vehicle, and the air conditioning unit 2 is mounted on the back side (the front side of the vehicle) of the instrument panel 1 from the vicinity of the center in the vehicle width direction to the portion on the left side, that is, the portion on the passenger seat side. Yes.

  As shown in FIG. 1, the air conditioning unit 2 includes an air conditioner 3 that adjusts the temperature of the air that has been taken in, and air that has been taken in the vehicle interior and sent to the air conditioner 3, and conditioned air that has been adjusted by the air conditioner 3 is And a blower 5 for blowing air into the room.

  Although not shown, the air conditioner 3 includes, for example, a cooling heat exchanger and a heating heat exchanger, and includes temperature input means such as an occupant operation panel and a dial provided in the instrument panel 1 and a vehicle interior. A target temperature of the conditioned air is set based on an input signal from a temperature sensor that detects the temperature, and both heat exchangers are driven to generate conditioned air having a temperature corresponding to the target temperature.

  The blower 5 includes a blower 7 that blows air in the vehicle interior to the air conditioner 3, an air duct 9 through which conditioned air from the air conditioner 3 flows, and a cylindrical shape that blows conditioned air introduced from the air duct 9 toward the vehicle interior. The blowout structure 11 and an air volume control unit 13 which is an air volume control means for controlling the air volume blown from the air conditioner 3 to the cylindrical blowout structure 11 through the air duct 9 are provided.

  The blower 7 is a blower source that blows air to the air duct 9 via the air conditioner 3 and the air volume control unit 13. The air duct 9 is composed of a pair of ducts 15L and 15R respectively connected to both ends of the cylindrical blowing structure 11. Specifically, the air duct 9 is connected to the left duct 15L connected to the left end of the cylindrical blowing structure 11 and the right end of the cylindrical blowing structure 11 when viewed from the front of the passenger seat to the front of the vehicle. And the right duct 15R.

  These left and right ducts 15L and 15R are both resin molded products, and are molded by blow molding or injection molding. Hereinafter, when the left and right ducts 15L and 15R are not distinguished from each other, they may be simply referred to as “ducts 15”.

  A cross-sectional perspective view of the cylindrical blowing structure 11 is shown in FIG. 2 together with the downstream end of the duct 15. An exploded perspective view of the cylindrical blowout structure 11 is shown in FIG. FIG. 4 shows a perspective view from the back side of the cylindrical blowing structure 11 and a rotation operation means 49 described later. Further, in the cylindrical blowout structure 11, a longitudinal sectional view taken along the line Va-Va in FIG. 2 is shown in FIG. 5A, and a longitudinal sectional view taken along the line Vb-Vb in FIG. A cross-sectional view taken along line Vc-Vc of FIG. 2 is shown in FIG. In FIG. 2, the arrows on the left and right sides indicate the flow of air from the duct 15 to the inside of the cylindrical blowing structure 11, and the arrow near the center indicates the wind that can be blown from the cylindrical blowing structure 11. An example of orientation is shown.

  The cylindrical blowing structure 11 is installed at a position above a glove box (not shown) on the front side of the passenger seat in a state in which the cylinder length direction is in a posture parallel to the vehicle width direction. As shown in FIGS. 2 and 3, the cylindrical blowout structure 11 includes an inner cylinder 17 and an outer cylinder 19 that are open at both ends, and the inner cylinder 17 is accommodated inside the outer cylinder 19. Having a double structure. Both the inner cylinder 17 and the outer cylinder 19 are resin molded products, and are molded by blow molding or injection molding.

  The inner cylinder body 17 is formed in a cylindrical shape, and has an inner outlet 21 extending in the cylinder length direction on the peripheral wall portion 23. The internal air outlet 21 is formed in a rectangular shape in front view in the center of the inner cylinder 17 in the cylinder length direction. The internal air outlet 21 is an opening that penetrates the peripheral wall portion 23 of the inner cylindrical body 17 and blows out air introduced into the inside from both open ends of the inner cylindrical body 17 inside the outer cylindrical body 19.

  The outer cylindrical body 19 is formed by integrally connecting two halved members 19a and 19b shown in FIG. 3 that are formed in a halved shape in the vertical direction as shown in FIG. The outer cylinder 19 protrudes in a direction perpendicular to the cylinder length direction, that is, in the front-rear direction, from the main body 25 having an accommodating space 25s for accommodating the inner cylinder 17 so as to be rotatable. A blowout wall portion 27 having an external blowout port 41 at the end is provided.

  The blow-out wall portion 27 is provided in a portion of the main body portion 25 of the outer cylindrical body 19 excluding both end portions in the tube length direction, that is, the left-right direction. Of the main body portion 25 of the outer cylindrical body 19, the portion provided with the blowing wall portion 27 is curved following the shape of the outer peripheral surface of the inner cylindrical body 17 as shown in FIG. 5A, and the blowing wall portion 27. Both end portions that are formed in a U-shaped longitudinal section that is open to the side and are disengaged from the blow-out wall portion 27 to the left and right sides are formed in a cylindrical shape as shown in FIG.

  As shown in FIG. 2, fitting portions 31 that fit into the duct 15 are provided at both ends of the main body portion 25. The fitting portion 31 has a smaller diameter than the portion of the main body portion 25 that houses the inner cylindrical body 17. The outer cylinder 19 is connected to the left and right ducts 15 </ b> L and 15 </ b> R by fitting both the fitting portions 31 to the open ends on the downstream side of the duct 15.

  Engaging convex portions 33 protruding outward are provided on both upper and lower sides of each insertion portion 31. Each of the engaging convex portions 33 is engaged with and engaged with an engaging concave portion 35 provided in the duct 15 into which the fitting portion 31 is fitted, and the fitting portion 31 of the outer cylinder 19 is prevented from being removed from the duct 15. It is retaining.

  The blow-out wall portion 27 of the outer cylindrical body 19 includes a pair of opposed wall portions 37 and 38 that face each other in the vertical direction, and a pair of side wall portions 39 and 40 that block both the left and right sides of the pair of opposed wall portions 37 and 38. Consists of. Between the protruding ends of the pair of opposing wall portions 37 and 38 and the pair of side wall portions 39 and 40, an external air outlet 41 communicating with the accommodating space 25s in the main body portion 25 of the outer cylinder 19 is provided. .

  As shown in FIG. 5A, the pair of opposing wall portions 37 and 38 are inclined with respect to the opening center line C of the external air outlet 41 from the main body portion 25 side toward the outside of the external air outlet 41. It extends. Specifically, the opposing wall portion (hereinafter referred to as the upper opposing wall portion) 37 located on the upper side extends obliquely downward from the main body portion 25 side toward the outside of the external air outlet 41. On the other hand, a facing wall portion (hereinafter referred to as a lower facing wall portion) 38 located on the lower side extends obliquely upward from the main body portion 25 side toward the outside of the external air outlet 41.

  The inner surface 37s of the upper facing wall portion 37 and the inner surface 38s of the lower facing wall portion 38 are perpendicular to the tube length direction of the outer cylindrical body 19 with the external air outlet 41 as a boundary, that is, both sides in the vertical direction. And extends in the same direction together with the opposing wall portions 37 and 38. That is, the inner surfaces 37 s, 38 s of the pair of opposing wall portions 37, 38 extend from the main body portion 25 side toward the outside of the external air outlet 41 so as to approach each other.

  On the other hand, as shown in FIGS. 2 and 3, the pair of side wall portions 39, 40 extend in parallel to each other in the direction orthogonal to the cylinder length direction of the outer cylinder body 19, that is, the front-rear direction. Each side wall 39, 40 is provided with a connecting means 43 for connecting the upper half member 19a and the lower half member 19b.

  That is, the engagement piece 45 having the engaged hole 46 is provided in a portion constituting the side wall portions 39 and 40 in the upper half member 19a. The engagement piece 45 protrudes downward from the portion constituting the side wall portions 39, 40 of the upper half member 19a. The engaged hole 46 is formed in the protruding portion of the engaging piece 45. On the other hand, the portions corresponding to the protruding portions of the engagement pieces 45 provided on the upper half member 19a among the portions constituting the side wall portions 39, 40 of the lower half member 19b are engaged. A convex portion 47 is provided. The engaging projection 47 is engaged with and engaged with the engaged hole 46. The connecting means 43 is composed of these engaging pieces 45 and engaging convex portions 47.

  Further, as shown in FIG. 4, a connecting means 43 similar to that provided on the side wall portions 39 and 40 is also provided on the back surface of the main body portion 25. That is, the engaging piece 45 having the engaged hole 46 and the engaging convex portion 47 that engages with the engaged hole 46 are provided separately for the upper half member 19a and the lower half member 19b. It has been. The upper half member 19a and the lower half member 19b are paired with the engagement convex portions 47 provided on the side wall portions 39 and 40 and the back surface of the main body portion 25, respectively. By being engaged with and engaged with the engaged hole 46 of the engaging piece 45, they are integrally connected.

  As shown in FIG. 1, the air volume control unit 13 is connected to each open end of the left and right ducts 15 </ b> L and 15 </ b> R on the opposite side to the connection side with the cylindrical blowing structure 11 (outer cylinder 19). . And the air volume control part 13 is provided with the damper (not shown) which adjusts the ventilation volume to these ducts 15 for each of the left and right ducts 15L and 15R.

  This air volume control unit 13 is provided with the left and right ducts 15L, which are blown by the blower 7, based on an input signal for setting the wind direction from a wind direction input means such as an occupant operation panel or dial provided on the instrument panel 1. The amount of air blown from the open end on the right side of the outer cylinder 19 with respect to the amount of air blown into the inner cylinder 17 through the left and right ducts 15L and 15R is controlled individually. And the air flow rate from the left open end are individually controlled.

  Furthermore, as shown in FIGS. 4 and 5 (b), the blower device 5 of the present embodiment further includes a rotation operation means 49 for operating the rotation operation of the inner cylinder body 17 in the cylindrical blowing structure 11. ing. The rotation operation means 49 is engaged with the gear portion 51 having gear teeth formed on the outer peripheral surface of the inner cylindrical body 17 over a predetermined range, the idle gear 53 that meshes with the gear portion 51, and the idle gear 53. And a motor 57 provided with a drive gear 55.

  The gear portion 51 is formed on the outer peripheral surface of the end portion on one side (left side in the example shown in FIG. 3) of the inner cylindrical body 17. An insertion hole 59 in which the idle gear 53 is inserted is formed in the back surface portion of the outer cylindrical body 19 to which the gear portion 51 corresponds. As shown in FIG. 4, a pair of small plate-like support protrusions 61 facing each other are provided on both the left and right sides of the insertion hole 59. The pair of support protrusions 61 are formed with bearing holes 63 at locations facing each other.

  A support pin 65 is inserted through a center hole formed at the center of the idle gear 53. The support pins 65 are inserted into the bearing holes 63 of the support protrusions 61 on the left and right sides of the idle gear 53 and supported by the pair of support protrusions 61. Thus, the idle gear 53 is rotatably supported by the support pin 65. The outer peripheral surface of one end portion of the support pin 65 is knurled, and the processed portion 65a is press-fitted into the bearing hole 63 of the one support protrusion 61 so that the support pin 65 is paired with a pair of support protrusions. It is fixed to 61 so as not to come out of the bearing hole 63.

  The motor 57 is a motor capable of switching the rotation direction between forward rotation and reverse rotation, and is attached to a mounting seat 67 provided on the side (left side in the example shown in FIG. 4) of the pair of support protrusions 61. . The drive shaft 58 of the motor 57 extends to the back side of the idle gear 53. A drive gear 55 is provided at the tip of the drive shaft 58 in a state where it is engaged with the idle gear 53.

  In the rotation operation means 49 having such a configuration, by driving the motor 57, the rotational power of the drive gear 55 is transmitted to the gear portion 51 of the inner cylinder body 17 through the idler gear 53, and the inner cylinder body 17 rotates. Moved. The rotation operation means 49 operates the rotation operation of the inner cylinder body 17 by driving the motor 57 and switching the rotation direction based on the input signal for setting the wind direction from the wind direction input means. ing.

  Thus, the inner cylinder 17 is rotated by the rotation operation means 49, whereby the direction of the inner outlet 21 is changed. As a result, the inner cylinder 17 includes a front state in which the internal air outlet 21 faces straight to the external air outlet 41, an upward inclined state in which the internal air outlet 21 faces the upper facing wall portion 37 side from the front state, The air outlet 21 is switched to a downward inclined state in which the air outlet 21 is directed toward the lower facing wall 38 rather than the front state.

  In the inner cylinder 17, as shown by a two-dot chain line in FIG. 5A, one end edge (upper end edge in the illustrated example) of the internal air outlet 21 in the vertical direction is the opening center of the external air outlet 41. When positioned on the line C, the distance between the both end edges in the vertical direction of the external air outlet 41 (the opening width in the vertical direction) a, the both end edges of the external air outlet 41 and the external air outlet 41 at the internal air outlet 21. The distances b and c between the edge located on the opening center line C are equal. That is, a straight line connecting both ends of the external air outlet 41 in the vertical direction is connected to both edges of the external air outlet 41 and an edge located on the opening center line C of the external air outlet 41 in the internal air outlet 21. A straight line draws an equilateral triangle when viewed from the cylinder length direction of the outer cylinder body 19.

  As a result, it is possible to prevent the wind direction control due to the turning operation of the inner cylindrical body 17 described above from becoming unstable due to the internal air outlet 21 being too far from the external air outlet 41. Moreover, when the edge of the internal air outlet 21 is located on the opening center line C of the external air outlet 41 that is closest to the external air outlet 41, the edge of the internal air outlet 21 reaches the external air outlet 41. The wind blown from the external air outlet 41 is not obstructed, and the air flow rate is not reduced.

  In the air blower 5 having the above-described configuration, the air volume control unit 13 changes the air volume from at least one open end of the outer cylinder 19 with respect to the inside of the inner cylinder 17, thereby passing through the internal air outlet 21 and the external air outlet 41. The direction of the air blown out from the inner cylinder 17 is changed in the left-right direction which is the cylinder length direction of the outer cylinder 19, and the inner cylinder 17 is rotated by the rotation operation means 49 to change the direction of the inner outlet 21. The direction of the wind that blows out from the external air outlet 41 through the internal air outlet 21 is changed in the vertical direction, which is a direction orthogonal to the cylinder length direction of the outer cylindrical body 19.

  Below, the wind direction control of the air blower 5 is demonstrated, referring FIGS. FIGS. 6A to 6C and FIGS. 7A and 7B are vertical cross-sectional views of the cylindrical blowout structure 11 showing valuations for controlling the wind direction in the vertical direction in the blower 5. FIGS. 8A to 8C and FIGS. 9A and 9B are cross-sectional views of the cylindrical blowing structure 11 showing the valuation of the wind direction control in the left-right direction in the blower 5. In addition, the arrow shown as a continuous line in these FIGS. 6-9 has shown the flow of the conditioned air in the inside of the cylindrical blowing structure 11. FIG. Moreover, the arrow shown with a dashed-dotted line in FIG. 8 has shown the compressed air which stayed in the inside of the cylindrical blowing structure 11. FIG. The same applies to FIG. 11 to be referred to later.

  First, with reference to FIGS. 6A to 6C and FIGS. 7A and 7B, an operation for controlling the direction of the wind blown from the external air outlet 41 of the blower 5 in the vertical direction will be described.

  When an input signal for setting the wind direction to the most downward direction is input from the wind direction input unit, the blower 5 rotates the inner cylinder 17 by driving the motor 57 of the rotation operation unit 49. As shown to 6 (a), let the whole internal blower outlet 21 be the state (upward inclination state) which faced the upper side opposing wall part 37. FIG.

  In this case, the conditioned air introduced into the inner cylinder 17 from at least one of the left and right ducts 15L and 15R is caused by the pressure difference between the inside of the inner cylinder 17 and the outside of the outer cylinder 19. After being blown out from the blower outlet 21 toward the upper facing wall portion 37, it flows obliquely downward along the inner surface 37 s of the upper facing wall portion 37 toward the external blower outlet 41, from the external blower outlet 41 to the outside (passenger seat side) ) Is blown obliquely downward. Thus, the direction of the wind blown out from the external air outlet 41 is directed downward most.

  Further, when an input signal for setting the wind direction to the most upward direction is input from the wind direction control unit, the blower 5 drives the motor 57 of the rotation operation unit 49 to rotate the inner cylinder body 17. As shown in FIG. 6 (b), the entire internal outlet 21 is in a state (downward inclined state) directed toward the lower facing wall portion 38.

  In this case, the conditioned air introduced into the inner cylinder 17 from at least one of the left and right ducts 15L and 15R is caused by the pressure difference between the inside of the inner cylinder 17 and the outside of the outer cylinder 19. After being blown out from the blower outlet 21 toward the lower facing wall portion 38, it flows obliquely upward along the inner surface 38 s of the lower facing wall portion 38, travels toward the external blower outlet 41, and directly goes from the external blower outlet 41 to the outside. It blows off diagonally upward. Thus, the direction of the wind blown out from the external air outlet 41 is directed most upward.

  The blower 5 rotates the inner cylinder 17 by driving the motor 57 of the rotation operation unit 49 when an input signal for setting the wind direction to the center in the vertical direction is input from the wind direction control unit. By doing so, as shown in FIG. 6 (c), the internal air outlet 21 is set in a state (front state) directed straight to the external air outlet 41.

  In this case, the conditioned air introduced into the inner cylinder 17 from at least one of the left and right ducts 15L and 15R is caused by the pressure difference between the inside of the inner cylinder 17 and the outside of the outer cylinder 19. The air is blown straight out from the air outlet 21 toward the external air outlet 41, and is blown out from the external air outlet 41 to the outside in the front direction of the external air outlet 41. In this way, the direction of the wind blown out from the external air outlet 41 is directed to the center in the vertical direction.

  Further, when an input signal for setting the wind direction slightly downward is input from the wind direction input unit, the blower 5 rotates the inner cylinder 17 by driving the motor 57 of the rotation operation unit 49. As shown in FIG. 7A, the internal air outlet 21 is directed over both the upper facing wall portion 37 and the external air outlet 41, that is, toward the edge located on the upper side of the external air outlet 41. State (upwardly inclined state).

  In this case, the conditioned air introduced into the inner cylinder 17 from at least one of the left and right ducts 15L and 15R is caused by the pressure difference between the inside of the inner cylinder 17 and the outside of the outer cylinder 19. The air is blown out from the air outlet 21 toward both the upper facing wall portion 37 and the external air outlet 41. The conditioned air blown toward the upper facing wall portion 37 flows obliquely downward along the inner surface 37 s of the upper facing wall portion 37 toward the external air outlet 41 and directly from the internal air outlet 21 to the external air outlet 41. The air then merges while colliding with the conditioned air that flows toward it, and is blown out from the external air outlet 41. At this time, the conditioned air blown from the external air outlet 41 is pushed by the wind flowing obliquely downward along the inner surface 37 s of the upper facing wall portion 37, and is blown downward from the external air outlet 41. In this way, the direction of the wind blown out from the external air outlet 41 is directed slightly downward.

  Further, when an input signal for setting the wind direction slightly upward is input from the wind direction input unit, the blower 5 rotates the inner cylinder 17 by driving the motor 57 of the rotation operation unit 49. 7B, the inner blower outlet 21 is directed over both the lower facing wall portion 38 and the outer blower outlet 41, that is, the edge located below the outer blower outlet 41. The state facing downward (inclined downward).

  In this case, the conditioned air introduced into the inner cylinder 17 from at least one of the left and right ducts 15L and 15R is caused by the pressure difference between the inside of the inner cylinder 17 and the outside of the outer cylinder 19. The air is blown out from the air outlet 21 toward both the lower facing wall portion 38 and the external air outlet 41. The conditioned air blown toward the lower facing wall portion 38 flows obliquely upward along the inner surface 38 s of the lower facing wall portion 38 toward the external air outlet 41, and from the internal air outlet 21 to the external air outlet 41. The air flows in the air while colliding with the conditioned air that goes directly to the air and blows out from the external air outlet 41. At this time, the conditioned air blown from the external air outlet 41 is pushed by the wind flowing obliquely upward along the inner surface 38 s of the lower facing wall portion 38 and is blown upward and downward from the external air outlet 41. . In this way, the direction of the wind blown out from the external air outlet 41 is directed slightly upward.

  Next, with reference to FIGS. 8A to 8C and FIGS. 9A and 9B, an operation for controlling the direction of the wind blown from the external air outlet 41 of the blower 5 in the left-right direction will be described.

  When the input signal for setting the wind direction to the leftmost is input from the wind direction input means, the blower 5 eliminates the air flow to the left duct 15L by the air volume control unit 13, as shown in FIG. In other words, the air flow to the left duct 15L is stopped, and the conditioned air from the air conditioner 3 is supplied only to the right duct 15R by setting the air flow to the right duct 15R as a predetermined air volume according to the wind intensity level set by the occupant. To blow.

  In this case, the conditioned air introduced from the right duct 15R into the inner cylinder 17 flows from the right to the left inside the inner cylinder 17, and the flow flows inside the inner cylinder 17 and outside the outer cylinder 19. The air flow is changed to a diagonally leftward flow toward the internal air outlet 21 due to the pressure difference between the internal air outlet 21 and the air and is blown out obliquely leftward from the external air outlet 41 through the internal air outlet 21. Thus, the direction of the wind blown out from the external air outlet 41 is directed to the leftmost.

  Further, when an input signal for setting the wind direction to the rightmost direction is input from the wind direction input means, the blower 5 is blown to the right duct 15R by the air volume control unit 13, as shown in FIG. 8B. In other words, the air flow to the right duct 15R is stopped, and the air flow to the left duct 15L is set as a predetermined air flow according to the wind intensity level set by the occupant. Ventilate conditioned air.

  In this case, the conditioned air introduced from the left duct 15L into the inner cylinder 17 flows from the left to the right inside the inner cylinder 17, and the flow flows inside the inner cylinder 17 and outside the outer cylinder 19. The pressure is changed to a diagonally rightward flow toward the internal air outlet 21 due to the pressure difference between the internal air outlet 21 and the air, and the air flows through the internal air outlet 21 from the external air outlet 41 as it is to the right. In this way, the direction of the wind blown from the external air outlet 41 is directed to the rightmost.

  In addition, when an input signal for setting the wind direction to the center in the left-right direction is input from the wind direction input unit, the air blower 5 is supplied by the air volume control unit 13 to the blowing intensity to the left duct 15L and to the right duct 15R. The air flow rate for the left and right ducts 15L and 15R is set so that the air blowing intensity is at the same level.

  In this case, the conditioned air introduced into the inside of the inner cylinder 17 from the left and right ducts 15L and 15R is respectively connected to the inside of the inner cylinder 17 and the outside of the outer cylinder 19 as shown in FIG. Is induced to the internal blower outlet 21 side and blown out from the external blower outlet 41 through the internal blower outlet 21. In the process, the conditioned air introduced from the left duct 15L into the inner cylinder 17 and the conditioned air introduced from the right duct 15R into the inner cylinder 17 merge while colliding. At this time, since the conditioned air introduced from the left duct 16L and the conditioned air introduced from the right duct 15R have the same level of air blowing strength, the inner cylinder 17 is connected to the left and right ducts 15L and 15R. The air introduced into the interior is blown out from the external air outlet 41 toward the center in the left-right direction through the internal air outlet 21. Thus, the direction of the wind blown out from the external air outlet 41 is directed to the center in the left-right direction.

  Further, when an input signal for setting the wind direction to be slightly leftward in the left-right direction is input from the wind direction input unit, the blower device 5 causes the air volume control unit 13 to increase the blowing intensity to the right duct 15R to the left duct 15L. The air flow rate for the left and right ducts 15L and 15R is set to be slightly stronger than the air blowing strength.

  In this case, the conditioned air introduced into the inner cylinder 17 from the left and right ducts 15L and 15R flows between the inside of the inner cylinder 17 and the outside of the outer cylinder 19 as shown in FIG. Due to the pressure difference, the air is guided toward the internal air outlet 21, and blown out from the external air outlet 41 through the internal air outlet 21. At this time, since the blowing strength of the conditioned air introduced from the right duct 15R is slightly stronger than the blowing strength of the conditioned air introduced from the left duct 15L, the inside of the inner cylinder 17 from the left and right ducts 15L and 15R. The conditioned air introduced into the air is pushed from the connection side of the right duct 15R through the internal air outlet 21 toward the external air outlet 41 by the air flowing obliquely to the left, and is blown out from the external air outlet 41 to the outside in a left-to-right direction. Is done. In this way, the direction of the wind blown out from the external air outlet 41 is directed slightly to the left.

  Further, when an input signal for setting the wind direction to be slightly rightward is input from the wind direction input unit, the blower device 5 causes the air volume control unit 13 to change the blowing intensity to the left duct 15L to the blowing intensity to the right duct 15R. The air flow rate for the left and right ducts 15L and 15R is set so as to be slightly stronger.

  In this case, the conditioned air introduced into the inner cylinder 17 from the left and right ducts 15L and 15R is formed between the inside of the inner cylinder 17 and the outside of the outer cylinder 19 as shown in FIG. Due to the pressure difference, the air is guided toward the internal air outlet 21, and blown out from the external air outlet 41 through the internal air outlet 21. At this time, since the blast strength of the conditioned air introduced from the left duct 15L is slightly stronger than the blast strength of the conditioned air introduced from the right duct 15R, the inside of the inner cylinder 17 from the left and right ducts 15L and 15R. The conditioned air introduced into the air is pushed from the connection side of the left duct 15L through the internal air outlet 21 toward the external air outlet 41 by the wind flowing diagonally to the right, and is blown outward from the external air outlet 41 in the right direction. Is done. In this way, the direction of the wind blown out from the external air outlet 41 is directed slightly to the right.

  As described above, the air blower 5 adjusts the direction of the wind blown from the external air outlet 41 by operating the turning operation of the inner cylinder 17 by the turning operation means 49, and the air volume control unit 13 By individually controlling the amount of air blown to the left and right ducts 15L and 15R, the direction of the wind blown from the external air outlet 41 can be adjusted in the left-right direction. Further, according to the combination of the wind direction control in the up and down direction and the left and right direction, the direction of the wind blown from the external air outlet 41 is an intermediate direction between the up and down direction and the left and right direction, that is, upper left direction, upper right direction, lower left direction and lower right direction. Can also be adjusted.

-Effect of the embodiment-
According to this embodiment, the external blower outlet 41 that blows out conditioned air does not have fins for controlling the wind direction, and the direction of the wind blown out from the external blower outlet 41 can be adjusted vertically and horizontally with a simple structure. . Thereby, the air blower 5 and the air conditioning unit 2 including the air blower 5 can be realized even when the external air outlet 41 has only an opening, and the design of the instrument panel 1 incorporating the air conditioning unit 2 can be improved. .

  Moreover, since the cylindrical blowout structure 11 and the air duct 9 constituting the blower 5 of this embodiment do not require a large installation space in the vehicle front-rear direction, the degree of freedom of the installation location is increased, and it has been difficult to install conventionally. It can also be installed on the back side of the instrument panel 1 in front of the passenger seat.

-Modification 1 of embodiment-
The air blower 5 of this modification 1 is demonstrated referring FIG.10 and FIG.11. FIG. 10 is a perspective view showing the inner cylindrical body 17 constituting the blower 5 of the present modification from the back side. FIG. 11 is a cross-sectional view of a portion corresponding to FIG. 5 (c) showing the cylindrical blowing structure 11 constituting the blower 5 of the present modification. In addition, the arrow of FIG. 11 shows the flow of air when air is blown only to the right duct 15R and the direction of the wind blown out from the external air outlet 41 is set to the leftmost.

  In the above embodiment, the conditioned air introduced into the inner cylinder 17 is guided to the inner outlet 21 side only by the pressure difference between the inside of the inner cylinder 17 and the outside of the outer cylinder 19. In the modification, as shown in FIGS. 10 and 11, a guide convex portion 71 that facilitates guiding conditioned air toward the internal outlet 21 is provided inside the inner cylinder 17.

  The guide convex portion 71 is a portion corresponding to the middle of the internal air outlet 21 in the back side portion of the inner cylinder 17 by forming a part of the inner cylinder 17 inwardly in a V-shaped cross section. Is formed. The guide convex portion 71 includes a pair of guide walls 73 that face the left and right ends of the internal air outlet 21. The conditioned air introduced from the duct 15 through the open end of the outer cylindrical body 19 into the inner cylindrical body 17 provided with the guiding convex portion 71 is formed inside the inner cylindrical body 17 as shown in FIG. It is guided to the internal air outlet 21 by the pressure difference from the outside of the outer cylindrical body 19 and the guide wall 73 of the guide convex portion 71, and blows out from the external air outlet 41 through the internal air outlet 21.

  According to such a configuration, it is possible to easily control the direction of the wind blown outside from the external air outlet 41 in the left-right direction.

-Modification 2 of embodiment-
The air blower 5 of this modification 2 is demonstrated referring FIG.12 and FIG.13. FIG. 12 is a front view showing a configuration of a wind blowing portion of the blower 5 of the present modification. FIG. 13 is a longitudinal sectional view showing a cylindrical blowout structure 11 constituting the blower 5 of the present modification.

  In the said embodiment, although the air blower 5 of the structure provided with only the one cylindrical blowing structure 11 was demonstrated, in this modification, the air blower 5 has the cylindrical blowing structure 11 as shown in FIG. Two are provided. The outer cylinders 19 of these two cylindrical blowout structures 11 are connected in series by a duct 15. Furthermore, in this modified example, although not shown, a rotation operation means 49 (gear portion 51, idle gear 53 and motor 57) is provided for each cylindrical blowing structure 11.

  Moreover, as shown in FIG. 13, the gear part 51 is formed in the outer peripheral surface of the inner cylinder 17 which comprises each cylindrical blowing structure 11 over the wide range more than a half circumference. Each of the cylindrical blowout structures 11 is rotated by the turning operation means 49 so that the inner blower 17 faces the inner blower 21 toward at least one of the opposing wall portions 37 and 38 and the external blower 41. The internal air outlet 21 can be switched between an open state and a closed state (the state shown in FIG. 13) where the internal air outlet 21 is closed by the inner surface of the main body 25 of the outer cylindrical body 19.

  According to such a configuration, there are two by setting the inner cylindrical body 17 of one cylindrical blowing structure 11 in an open state and closing the inner cylindrical body 17 of the other cylindrical blowing structure 11 in a closed state. Only one cylindrical blowing structure 11 among the cylindrical blowing structures 11 can be selectively blown to blow out conditioned air. Thereby, the blowing position of the conditioned air in the air conditioning unit 2 can be changed, and the direction of the wind blown from the external blower outlet 41 of the cylindrical blower structure 11 on which the blowing operation is performed is the same as in the above embodiment. Can be changed in multiple directions.

—Modification 3 of Embodiment—
The air blower 5 of this modification 3 is demonstrated referring FIG. FIG. 14 is a front view showing a configuration of a wind blowing portion of the blower 5 according to this modification.

  Similarly to the second modification, the air blower 5 of the present modification also includes two cylindrical blowing structures 11 as shown in FIG. 14, and the rotation operation means 49 (gear portion) is provided for each cylindrical blowing structure 11. 51, idle gear 53 and motor 57) are provided. The outer cylinders 19 of the two cylindrical blowout structures 11 are connected in parallel by a duct 15. Each of the cylindrical blowout structures 11 has a configuration in which the inner cylinder 17 can be switched between an open state and a closed state, as in the second modification.

  According to such a configuration, it is possible to selectively perform an air blowing operation only on any one of the two cylindrical blowing structures 11. Moreover, it is also possible to cause both the cylindrical blowout structures 11 to perform a blowing operation. And while making arbitrary cylindrical blowing structure 11 perform air blowing operation among these two cylindrical blowing structures 11, the wind which blows off from external blower outlet 41 of cylindrical blowing structure 11 which performed air blowing operation The direction can be changed in multiple directions as in the above embodiment.

  In the above embodiment, the air volume control unit 11 is provided with a damper that adjusts the air flow to the left and right ducts 15L and 15R. However, the air flow control unit 11 can individually control the air flow to the left and right ducts 15L and 15R. If so, the amount of air blown to the left and right ducts 15L, 15R may be adjusted by something other than the damper.

  Moreover, in the said modification 2 and 3, although the air blower 5 provided with the two cylindrical blowing structures 11 was demonstrated, the air blower is provided with the three or more cylindrical blowing structures 11, and these several cylindrical shape The blowout structure 11 may have a configuration in which the ducts 15 are connected in series or in parallel.

  As described above, the present invention is useful for a blower capable of adjusting the wind direction, and in particular, without a fin for controlling the wind direction at a blow-out port for blowing out air, with a simple structure and in many directions. It is suitable for a blower that is required to be able to control the direction of the wind.

C Opening center line of external outlet 5 Blower 7 Blower (Blower source)
9 Air Duct 11 Tubular Blowout Structure 13 Air Volume Control Unit (Air Volume Control Means)
DESCRIPTION OF SYMBOLS 15 Duct 15L Left side duct 15R Right side duct 17 Inner cylinder 19 Outer cylinder 21 Internal blower outlet 25 Outer cylinder body part 27 Outer cylinder blowing wall part 25s Housing space 37 Upper opposing wall part 37s Upper opposing wall part 38 s Lower facing wall 38 s Lower facing wall 41 inner air outlet 49 Rotating operation means 51 Gear part 53 Idle gear 57 Motor

Claims (3)

  1. An inner cylindrical body having an internal outlet that opens both ends and blows air introduced into the inside from both open ends, and a main body having an accommodation space that is open at both ends and rotatably accommodates the inner cylindrical body; An external air outlet is provided between the projecting ends of the pair of opposing wall portions that has a pair of opposing wall portions that protrude from the main body portion in a direction orthogonal to the cylinder length direction and that face each other. An air outlet wall portion, and the inner surfaces of the pair of opposing wall portions extend so as to approach each other from the main body portion toward the external air outlet, and the air blown from the internal air outlet is transferred to the external air outlet. A cylindrical blowout structure of a double structure composed of an outer cylinder that blows out from the outside,
    A duct that is connected to both open ends of the outer cylinder and introduces air into the inner cylinder from the open ends;
    A blowing source for blowing air into the duct;
    Regarding the amount of air blown into the inner cylinder through the duct by the air source, the amount of air blow from one open end of the outer cylinder and the amount of air blow from the other open end of the outer cylinder Air volume control means for individually controlling
    A rotation operation means for operating a rotation operation of the inner cylinder,
    The direction of the air blown out from the external air outlet through the internal air outlet is changed by changing the air flow rate from at least one open end of the outer cylinder to the inside of the inner cylinder by the air volume control means. The direction of the wind blown out from the external air outlet through the internal air outlet is changed by changing the direction of the internal air outlet by turning the inner cylinder body with the turning operation means and changing the direction of the internal air outlet. The air blower characterized by changing in the direction orthogonal to the cylinder length direction of an outer cylinder.
  2. The blower device according to claim 1,
    A plurality of the cylindrical blowout structures are provided, and the rotation operation means is provided for each of the cylindrical blowout structures,
    The outer cylinders of the plurality of cylindrical blowout structures are connected in series or in parallel by the duct,
    The inner cylindrical body of each cylindrical blowout structure can be switched to a closed state in which the internal outlet is closed by the inner surface of the main body portion of the outer cylindrical body by a rotating operation by the rotating operation means. A blower characterized by.
  3. In the blower device according to claim 1 or 2,
    When one end edge in the direction perpendicular to the cylinder length direction of the inner cylindrical body at the inner outlet is located on the opening center line of the outer outlet, the cylinder length of the outer cylinder at the outer outlet A straight line connecting both end edges in a direction orthogonal to the direction, and a straight line connecting both end edges of the external air outlet and an end edge of the internal air outlet located on the opening center line of the external air outlet, The air blower characterized by drawing an equilateral triangle seeing from the cylinder length direction.

JP2013115251A 2013-05-31 2013-05-31 Air blower Pending JP2014234936A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2013115251A JP2014234936A (en) 2013-05-31 2013-05-31 Air blower

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2013115251A JP2014234936A (en) 2013-05-31 2013-05-31 Air blower

Publications (1)

Publication Number Publication Date
JP2014234936A true JP2014234936A (en) 2014-12-15

Family

ID=52137781

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2013115251A Pending JP2014234936A (en) 2013-05-31 2013-05-31 Air blower

Country Status (1)

Country Link
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105509282A (en) * 2016-01-12 2016-04-20 广东美的制冷设备有限公司 Cabinet driving rack, door driving device and air conditioner cabinet
KR101782533B1 (en) * 2016-10-20 2017-09-28 김성종 System of preventing from creating icicle in Tunnel
FR3061872A1 (en) * 2017-01-19 2018-07-20 Valeo Systemes Thermiques DYNAMIC DIFFUSION AERATOR FOR A MOTOR VEHICLE

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105509282A (en) * 2016-01-12 2016-04-20 广东美的制冷设备有限公司 Cabinet driving rack, door driving device and air conditioner cabinet
KR101782533B1 (en) * 2016-10-20 2017-09-28 김성종 System of preventing from creating icicle in Tunnel
FR3061872A1 (en) * 2017-01-19 2018-07-20 Valeo Systemes Thermiques DYNAMIC DIFFUSION AERATOR FOR A MOTOR VEHICLE

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