WO2020066524A1

WO2020066524A1 - Blowing device for vehicle

Info

Publication number: WO2020066524A1
Application number: PCT/JP2019/034969
Authority: WO
Inventors: 啓之財木; 西川　克巳; 敏治藤井
Original assignee: 株式会社デンソー
Priority date: 2018-09-24
Filing date: 2019-09-05
Publication date: 2020-04-02
Also published as: JP7103110B2; JP2020049976A

Abstract

This blowing device for a vehicle is provided with ventilation ducts (12a, 12b) which are disposed in a ceiling inside a vehicle cabin, and which are provided with blowout ports (41) that are provided to the rear, in the direction of travel of the vehicle, of a passenger seated in a seat (3) in the vehicle cabin, open in the vehicle cabin toward the front in the direction of travel of the vehicle, and blow out an airflow as a jet flow, wherein the airflows blown out from the blowout ports draw in airflows from the periphery of said airflows, and the drawn-in airflows and the airflows blown out from the blowout ports are blown toward the rear of the passenger.

Description

Vehicle blower

Cross-reference to related application

This application is based on Japanese Patent Application No. 2018-178195 filed on Sep. 24, 2018, the contents of which are incorporated herein by reference.

The present disclosure relates to a vehicle blower.

2. Description of the Related Art Conventionally, in a vehicle air blower, an air outlet is provided between a front seat and a rear seat on a ceiling in a passenger compartment, and blows out an airflow sucked from the passenger compartment toward a head of an occupant in a rear seat. (For example, see Patent Document 1). In this vehicle air blower, a flap is provided on the rear side in the vehicle traveling direction with respect to the air outlet, the flap being capable of adjusting the direction of the airflow blown out from the air outlet by rotating about an axis.

こと Thus, by adjusting the angle of the flap, the air flow blown out from the outlet can be guided by one surface of the flap to adjust the flow direction of the air flow.

JP 2016-74413 A

According to the study of the inventor, in the above-described vehicle air blower, in order to blow the airflow blown out from the air outlet to the rear side of the occupant of the front seat, the front end side of the flap is directly below or in the vehicle traveling direction. It needs to be adjusted to face the front.

In this case, since one surface of the flap is directed forward in the vehicle traveling direction, the airflow blown out from the outlet is reversed by the one surface of the flap, so that the pressure loss of the airflow increases. For this reason, noise is generated, and the amount of air that reaches the rear side of the occupant of the front seat decreases, so that the comfort given to the occupant of the front seat decreases.

The present disclosure has an object to provide a vehicle blower that improves comfort given to an occupant.

According to one aspect of the present disclosure, a vehicle air blower is disposed on a ceiling in a vehicle interior, is provided on a rear side in a vehicle traveling direction with respect to an occupant seated in a seat in the vehicle interior, and is provided in a vehicle interior. An airflow duct provided with an air outlet opening toward the front in the traveling direction and blowing out an airflow as a jet flow is provided, and the airflow blown out from the air outlet draws in the airflow from around the airflow, and the drawn air The stream and the air stream blown out from the outlet are blown to the rear side of the occupant.

Here, for convenience of explanation, the air flow blown out from the outlet is referred to as a first air flow, and the air flow drawn from the periphery of the first air flow by the first air flow is referred to as a second air flow.

According to this, the first air flow and the second air flow can be sent to the rear side of the occupant. Therefore, the amount of air that reaches the rear side of the occupant can be increased as compared with the case where only the first airflow is blown to the rear side of the occupant.

に In addition, the air outlet is provided on the rear side in the vehicle traveling direction with respect to the occupant sitting on the seat, and is opened in the vehicle interior toward the front side in the vehicle traveling direction. Therefore, it is not necessary to reverse the airflow blown out from the outlet by the flap in order to blow the airflow blown out from the blowout to the rear side of the occupant. Therefore, it is possible to prevent a decrease in the amount of air blow and an occurrence of noise due to an increase in pressure loss.

As described above, it is possible to provide a vehicle blower that improves comfort.

Note that the reference numerals in parentheses attached to the respective components and the like indicate an example of the correspondence between the components and the like and the specific components and the like described in the embodiments described later.

FIG. 1 is a diagram illustrating a vehicle air blower mounted on an automobile in one embodiment. FIG. 2 is a partial cross-sectional view illustrating an internal structure of a blower unit and an appearance of a blower duct, when the vehicle blower device in FIG. 1 is viewed from below in a vertical direction. FIG. 3 is a sectional view taken along the line III-III in FIG. 2. FIG. 4 is a sectional view taken along line IV-IV in FIG. 2. FIG. 5 is a cross-sectional view showing a closed wall portion alone in FIG. 4. FIG. 3 is a diagram showing a state in which a flap is directed right below in a state in which a sliding door in FIG. 2 blocks an outlet for blowing air to a rear side. FIG. 3 is a diagram illustrating a state in which the flap is directed obliquely to the front side in a state in which the slide door in FIG. 2 blocks an outlet that blows air to the rear side. FIG. 3 is a diagram showing a state in which the flap is directed obliquely rearward in a state where the slide door in FIG. 2 blocks an air outlet that blows air forward. It is a figure which shows the state in which the air flow blown off from an outlet in a comparative example is reversed by a flap.

Hereinafter, the vehicle air blower according to the present embodiment will be described with reference to FIGS. In each figure, the front arrow indicates the front side in the vehicle traveling direction, the rear arrow indicates the front side in the vehicle traveling direction, the up arrow indicates the upper side of the vehicle interior, the down arrow indicates the lower side of the vehicle interior, and the left arrow indicates the vehicle width. The right arrow indicates the right side in the vehicle width direction.

The vehicle 1 to which the vehicle air blower 10 according to the present embodiment is applied has three rows of seats in the vehicle traveling direction. The vehicle blower 10 includes a blower unit 11 and

blower ducts

12a and 12b.

Blower unit 11 and

blower ducts

12a and 12b are arranged on ceiling 2 in the passenger compartment. The blower unit 11 sucks air in the vehicle interior from the front side in the vehicle traveling direction and blows the air to the

blower ducts

12a and 12b. The air blown from the blower unit 11 is blown out from the

blower ducts

12a and 12b toward the front side or the rear side in the vehicle traveling direction.

(1) As shown in FIG. 1, the blower unit 11 is disposed around the position of the seat 3 in the first row in the vehicle traveling direction in the vehicle interior. As shown in FIG. 2, the blower unit 11 is disposed at the center of the vehicle interior space in the vehicle width direction (that is, in the left-right direction).

風 The

air ducts

12a and 12b are arranged between the seat 3 in the first row and the seat 4 in the second row in the vehicle traveling direction, as shown in FIG.

(2) The ventilation duct 12a is disposed on the right side in the vehicle width direction with respect to the ventilation unit 11, as shown in FIG. The blower duct 12b is disposed on the left side in the vehicle width direction with respect to the blower unit 11.

風 As shown in FIG. 3, the blower unit 11 includes a case 20 and a blower 30. The case 20 houses the blower 30.

The case 20 is formed of a resin (for example, polypropylene) having a certain degree of elasticity and excellent strength. The case 20 has a substantially rectangular parallelepiped shape, and is disposed such that its long side coincides with the vehicle traveling direction and its short side coincides with the vehicle width direction.

吸 A suction port 24 for introducing the air in the vehicle compartment into the case 20 is opened at an end of the case 20 on the front side in the vehicle compartment. A plurality of louvers 21a are formed in the opening portion of the suction port 24 in the case 20.

The louver 21a guides the flow of air sucked from the suction port 24, and is formed in a flat plate shape that is inclined downward from the front to the rear of the case 20 in the vehicle traveling direction. As a result, the vehicle interior air sucked into the suction port 24 flows from the upper side to the lower side.

The blower 30 is an electric blower that blows air, and includes a fan 31, an electric motor 32, and a scroll casing 33. The fan 31 is a centrifugal multi-blade fan that sucks air from one axial side and discharges air radially outward.

一方 One side in the axial direction of the fan 31 of the present embodiment coincides with the lower side in the vehicle interior in the vertical direction. The fan 31 is driven to rotate by an electric motor 32 mounted on the other end side in the axial direction (that is, on the side of the inside of the vehicle where the sky region is improved). The fan 31 is arranged so that its axial direction coincides with the vertical direction in the vehicle interior.

The scroll casing 33 accommodates the fan 31 and the electric motor 32 and forms an outflow passage through which air flowing out of the fan 31 passes. The scroll casing 33 is formed in a spiral shape in which the cross-sectional area of the outflow passage gradually increases in the rotation direction of the fan 31.

An air suction port 36 for sucking the air in the case 20 is formed in a portion of the scroll casing 33 corresponding to the air suction portion of the fan 31 (the lower side in the vehicle compartment in FIG. 3). Therefore, air is sucked into the fan 31 via the air suction port 36.

空気 An air passage 35 through which air discharged from the scroll casing 33 of the blower 30 flows is formed inside the case 20.

The air passage 35 extends from the front side in the vehicle compartment to the rear side of the vehicle, and a portion on the vehicle rear side is branched into two in the vehicle left-right direction.

Air outlets

36a and 36b through which the air flowing through the air passage 35 flows out are formed in side surfaces of the case 20 in the vehicle width direction.

送 The air duct 36a is connected to the air outlet 36a. The air duct 36b is connected to the air outlet 36b.

風 The

air ducts

12a and 12b are configured to be line-symmetric about the center line T (see FIG. 2). The center line T is a center line of the vehicle blower 10 in the vehicle width direction (that is, the left-right direction).

Therefore, the structure of the air duct 12a will be described below, and the description of the structure of the air duct 12b will be omitted.

The air duct 12a is formed to extend from the air outlet 36a of the case 20 to the right side in the vehicle width direction. The air duct 12a is formed in a rectangular cylindrical shape that forms a main air passage 120 that allows the airflow flowing out of the air outlet 36a of the case 20 to flow to the right side in the vehicle width direction. The ventilation duct 12a has a certain degree of elasticity and is formed of a resin (for example, polypropylene) having excellent strength.

The blower duct 12a has an outlet 40 that is opened rearward in the vehicle traveling direction and blows out the airflow to the rear side in the vehicle traveling direction, and an outlet 41 that is opened frontward in the vehicle traveling direction and blows out the airflow to the front side in the vehicle traveling direction. Are provided.

Here, the

air outlets

40 and 41 are elongated and open in the vehicle width direction, respectively. The

outlets

40 and 41 are arranged rearward of the head of the occupant seated on the first row of seats 3 in the vehicle traveling direction. The air outlet 41 is a first air outlet arranged on the rear side in the vehicle traveling direction with respect to the air outlet 40.

風 As shown in FIG. 4, the ventilation duct 12a has a substantially rectangular cross section. The ventilation duct 12a includes an upper wall 50, a front wall 51, a rear wall 52,

lower walls

53a and 53b, and a closing wall 54.

The upper wall 50 is formed parallel to the vehicle traveling direction. The upper wall 50 is mounted on the ceiling 2. The front wall portion 51 is disposed on the front side in the vehicle traveling direction with respect to the upper wall portion 50, and is formed parallel to the up and down direction. The lower wall portion 53a is disposed on the rear side in the vehicle traveling direction with respect to the upper wall portion 50, and is formed in parallel in the up-down direction.

The lower wall portion 53a is formed from the lower end of the front wall portion 51 toward the rear side in the vehicle traveling direction. Specifically, the lower wall portion 53a is formed so as to be inclined with respect to the horizontal direction so that the lower wall portion 53a of the upper wall portion 50 moves downward from the lower end toward the rear in the vehicle traveling direction.

The lower wall 53b is formed from the lower end of the rear wall 52 toward the front in the vehicle traveling direction. Specifically, the lower wall portion 53b is formed so as to be inclined with respect to the horizontal direction such that the lower wall portion 53b of the rear wall portion 52 moves downward from the lower end toward the front in the vehicle traveling direction. An opening is formed between the

lower wall portions

53a and 53b in the vehicle width direction.

The closing wall portion 54 is formed in a thin plate shape and is formed in a curved shape that is convex downward in the vertical direction. The closing wall portion 54 is disposed so as to close the opening between the

lower wall portions

53a and 53b from above.

Specifically, as shown in FIG. 5, the closing wall portion 54 includes a front wall portion 54a, a rear wall portion 54b, and an intermediate wall portion 54c. The front wall portion 54a, the rear wall portion 54b, and the intermediate wall portion 54c are formed in a curved shape that protrudes downward. The intermediate wall portion 54c is disposed at an opening between the

lower wall portions

53a and 53b.

The front side wall portion 54a is disposed on the front side in the vehicle traveling direction with respect to the intermediate wall portion 54c, as shown in FIG. The front side wall portion 54a is disposed above the lower wall portion 53a with a space between the front wall portion 54a and the lower wall portion 53a.

The front wall portion 54a is formed so as to advance upward from the intermediate wall portion 54c toward the front side in the vehicle traveling direction. At the foremost end of the front wall portion 54a, a protrusion 58a that protrudes upward with a space between the front wall portion 51 is provided.

Accordingly, a blow-off air flow path 56 as a second air flow path is formed between the front wall 51 and the lower wall 53a and the front wall 54a of the closing wall 54. Therefore, the front wall portion 51, the lower wall portion 53a, and the front wall portion 54a constitute a second air flow path forming section that forms the blown air flow path 56.

The blow-out air flow path 56 is formed so as to go downward as it goes backward in the vehicle traveling direction. The outlet 40 as a second outlet is formed at the rearmost position in the vehicle traveling direction in the outlet air flow path 56. The air outlet 40 is formed in the vehicle interior at the rear side in the vehicle traveling direction and downward. The blow-off air flow path 56 is an air flow path that allows the air flow from the main air passage 120 to flow toward the blow-out port 40.

Here, the cross-sectional area of the air flow path of the blow-off air flow path 56 is smaller than the cross-sectional area of the air flow path of the main air passage 120. The blow-off air flow path 56 functions as a nozzle that pressurizes the air flow in the main air passage 120 and jets out the pressurized air flow from the outlet 40 as a jet toward the rear in the vehicle traveling direction in the vehicle interior.

　 The rear wall portion 54b is disposed above the lower wall portion 53b with a space between the lower wall portion 53b and the upper side. The rear side wall portion 54b is formed so as to proceed downward as it approaches the front side in the vehicle traveling direction.

突起 At the rearmost side of the rear side wall portion 54b, a protrusion portion 58b that protrudes upward with a space between the rear wall portion 52 is provided.

Thus, between the rear wall portion 52 and the lower wall portion 53b and the rear wall portion 54b of the closing wall portion 54, the blown air flow path 57 as the first air flow is formed. For this reason, the rear wall part 52, the lower wall part 53b, and the rear wall part 54b constitute a first air flow path forming part that forms the blown air flow path 57.

The blow-out air flow path 57 is formed so as to go downward as it goes forward in the vehicle traveling direction. The outlet 41 is formed at the most front side in the vehicle traveling direction in the outlet air flow path 57. The air outlet 41 is formed so as to be open on the front side in the vehicle traveling direction and downward. The blow-out air flow path 57 is an air flow path that allows the air flow from the main air passage 120 to flow toward the blow-out port 41.

Here, the cross-sectional area of the air flow path of the blow-off air flow path 57 is smaller than the cross-sectional area of the air flow path of the main air passage 120. The outlet air passage 57 pressurizes the airflow in the main air passage 120, and uses the pressurized airflow as a jet at the outlet 41 in the vehicle traveling direction in the vehicle interior (ie, the occupant of the seat 3 in the first row). (Rear side).

　 As shown in FIG. 5, a front inclined surface 55b and a rear inclined surface 55c are provided below the obstruction wall portion 54 in the vertical direction.

The front inclined surface 55b is a wall surface formed on the lower side of the closed wall portion 54 on the rear side in the vehicle traveling direction. The front inclined surface 55b constitutes a second inclined upper wall formed above the blown air flow path 57. The front inclined surface 55b is formed so as to proceed downward as it goes forward in the vehicle traveling direction.

The rear inclined surface 55c is a wall surface formed on the lower side of the closed wall portion 54 on the front side in the vehicle traveling direction. The rear inclined surface 55c constitutes a first inclined upper wall formed above the outlet air flow path 56. The rear inclined surface 55c is formed so as to proceed downward as it goes rearward in the vehicle traveling direction.

ガイド A guide portion 500 that exerts a Coanda effect for drawing a jet from the outlet 41 is formed between the outlet 41 and the slide door 60 on the lower side in the vertical direction of the closing wall portion 54, as described later.

The guide portion 500 is a first guide portion formed in the vehicle traveling direction and constituting a wall surface exposed to the lower side in the vehicle interior. The guide portion 500 and the rear inclined surface 55c form a continuous wall surface.

(4) A guide portion 501 that exerts a Coanda effect for drawing a jet from the air outlet 40 is provided between the air outlet 40 and the slide door 60 on the lower side in the vertical direction of the closed wall portion 54, as described later.

The guide portion 501 is a second guide portion that is formed in the vehicle traveling direction and that constitutes a wall surface that is exposed downward in the vehicle interior. The guide part 501 and the front inclined surface 55b constitute a continuous wall surface.

スライド A slide door 60 as a slide adjustment unit is provided below the closed wall 54 with respect to the intermediate wall 54c. The slide door 60 is supported by the right and left ends in the vehicle width direction of the air duct 12a so as to be slidable in the vehicle traveling direction between the

outlets

40 and 41. The slide door 60 plays a role of opening one of the

outlets

40 and 41 and closing the other (see FIGS. 6, 7, and 8).

The slide door 60 is formed in a long plate shape extending in the vehicle width direction. The end surface 60a of the slide door 60 on the rear side in the vehicle traveling direction is formed in an inclined shape that moves downward in the vertical direction as it approaches the front side in the vehicle traveling direction. The end face 60 a serves to guide the airflow flowing along the guide part 500 to the rear face 72 of the flap 70.
The end surface 60b of the slide door 60 on the front side in the vehicle traveling direction is formed in an inclined shape that goes downward in the vertical direction as it goes rearward in the vehicle traveling direction. The end face 60b plays a role in guiding the airflow flowing along the guide part 501 to the front face 71 of the flap 70.

The slide door 60 supports the flap 70 such that the flap 70 is rotatable about an axis S (see FIG. 2) extending in the vehicle width direction.
Specifically, the slide door 60 is provided with two shafts 61. FIG. 4 shows only one shaft 61. One shaft 61 of the two shafts 61 is formed to extend rightward from the right side surface of the slide door 60 in the vehicle width direction. The other shaft 61 other than the one shaft 61 of the two shafts 61 is formed to extend leftward from the left side surface in the vehicle width direction of the slide door 60.

Accordingly, the flap 70 is a wind direction adjusting member that is configured to be rotatable with respect to the shaft 61 of the slide door 60. The flap 70 is formed in a plate shape extending in the vehicle width direction, and forms a flap main body.

The flap body is formed in a plate shape that crosses in the vehicle traveling direction and expands in a cross direction crossing (for example, orthogonally) the vehicle width direction. The flap 70 is arranged on one side in the cross direction so that the axis S overlaps.

Two flange portions 73 (see FIG. 4) are provided on one side of the flap 70 in the cross direction. FIG. 4 shows only one flange portion 73. One of the two flange portions 73 rotatably supports one of the two shafts 61.

他方 The other flange 73 of the two flanges 73 rotatably supports the other shaft 61 of the two shafts 61. The flap 70 according to the present embodiment is a cantilever door having one end in the cross direction thereof supported by the slide door 60. The flap 70 includes a front surface 71 formed toward the front side in the vehicle traveling direction and a rear surface 72 formed toward the rear side in the vehicle traveling direction.

前面 The front surface 71 of the present embodiment is formed so as to expand in the cross direction and the vehicle width direction. The front surface 71 plays a role in guiding the airflow flowing along the guide portion 501. The rear surface 72 is formed so as to expand in the intersection direction and the vehicle width direction. The rear surface 72 plays a role in guiding the airflow flowing along the guide portion 500.

位置 The position of the flap 70 in the rotation direction about the two shafts 61 is set by the operation of the occupant. Thus, the direction in which the air flow blown out from the

outlets

40 and 41 is guided by the front surface 71 and the rear surface 72 can be set.

室内 As shown in FIG. 1, an indoor air-conditioning unit 7 of a vehicle air-conditioning apparatus is arranged inside the instrument panel 6 (instrument panel) at the forefront of the vehicle interior. The indoor air conditioning unit 7 has an air conditioning case 7a. The air-conditioning case 7a forms the outer shell of the indoor air-conditioning unit 7 and also forms an air passage for indoor air blown toward the vehicle interior.

送 Blast air from a blower unit (not shown) flows into the most upstream portion of the air passage in the air conditioning case 7a. The blower unit is arranged inside the instrument panel 6 together with the indoor air conditioning unit 7.

The blower unit includes an inside / outside air switching box for switching and introducing inside air (vehicle interior air) and outside air (outside vehicle interior air), and a centrifugal blower for blowing air introduced into the inside / outside air switching box. An evaporator, a heater core, an air mix door, and the like (all not shown) are arranged in an air passage in the air conditioning case 7a. The evaporator is one of the devices constituting a vapor compression refrigeration cycle (not shown), and cools the blown air from the blower unit by evaporating a low-pressure refrigerant in the refrigeration cycle to exert an endothermic effect. Cooling heat exchanger.

The heater core is a heat exchanger for heating cold air by exchanging heat between engine cooling water (warm water) for cooling an engine (not shown) of the automobile 1 and cold air cooled by the evaporator. The air mix door is a temperature adjusting unit that adjusts the temperature of air blown into the vehicle cabin to a desired temperature by adjusting the ratio of the amount of cold air cooled by the evaporator and the amount of warm air heated by the heater core. .

フェイス A face opening 711 is opened in the air conditioning case 7a. One end of a face duct 8 forming an air passage is connected to the face opening 711. The other end of the face duct 8 is connected to a face outlet 9 provided in the instrument panel 6.

The face air outlet 9 blows out the conditioned air whose temperature has been adjusted by the air conditioning case 7a toward the face of the occupant in the passenger compartment (upper side of the passenger compartment). When the conditioned air is blown out from the face outlet 9, an air flow F (see FIG. 1) directed toward the upper side of the vehicle compartment is formed.

Next, the operation of the above configuration will be described. First, when the blower 30 of the vehicle blower 10 is operated, vehicle interior air is sucked into the case 20 from the suction port 24 formed on the front surface of the case 20 of the blower unit 11. The air sucked into the case 20 is sucked into the scroll casing 33 as shown by the arrow F1 and is discharged from the scroll casing 33. Part of the air discharged from the scroll casing 33 flows into the main air passage 120 of the air duct 12a through the air passage 35 in the case 20 and the air outlet 36a as indicated by an arrow F2a.

On the other hand, of the airflow discharged from the scroll casing 33, the remaining airflow other than the airflow flowing to the airflow duct 12a passes through the airflow passage 35 and the air outlet 36b in the case 20, and the main airflow of the airflow duct 12b passes through the air passage 35 and the air outlet 36b. It flows into the air passage 120.

For example, as shown in FIG. 7, the user slides the slide door 60 by operating the slide door 60 so that the slide door 60 closes the outlet 40 and opens the outlet 41 in the air duct 12a. At this time, the front surface 71 is directed upward, the rear surface 72 is directed downward, and the front end of the flap 70 is directed forward and downward.

In this case, the airflow flowing in the main air passage 120 of the air duct 12a flows to the outlet 41 through the outlet air passage 57. At this time, the air flow from the main air passage 120 is decompressed in the blow-off air flow path 57, and the decompressed air flow expands when being discharged from the outlet 41 into the vehicle interior.

Therefore, the airflow in the blown air flow path 57 is blown out from the blowout port 41 into the vehicle interior as a jet. This jet is blown from the outlet 41 toward the rear side of the occupant of the seat 3 in the first row, as indicated by an arrow F3. Hereinafter, for convenience of description, the airflow blown out from the blowout port 41 is referred to as a first airflow.

{Circle around (1)} Here, the first airflow blown out from the outlet 41 draws in the second airflow from the periphery of the first airflow as indicated by an arrow F4. At this time, the first air flow blown out from the outlet 41 and the second air flow drawn in from around the first air flow are drawn to the guide portion 500 by the Coanda effect, and the rear surface of the guide portion 500 and the flap 70 It flows along 72.

第 The first air flow and the second air flow drawn to the guide portion 500 are guided by the rear surface 72 of the flap 70 and flow to the front lower side as in F5. This flowed airflow is sent to the rear of the head of the occupant seated in the first row of seats 3 (hereinafter referred to as the front occupant), the neck, or between the front occupant and the headrest of the first row of seats 3. Can be

As a result, the first airflow blown out from the outlet 41 does not draw the second airflow from the surroundings, and the amount of air blown to the front occupant can be increased as compared with the case where the first airflow is blown to the front occupant. it can. Therefore, the comfort of the front occupant can be improved.

(6) As shown in FIG. 6, the slide door 60 closes the outlet 40 and opens the outlet 41. At this time, the front surface 71 is directed forward, the rear surface 72 is directed rearward, and the distal end of the flap 70 is directed downward.

In this case, the first air flow and the second air flow flowing along the guide portion 500 are guided by the rear surface 72 of the flap 70 and flow directly below.

。As shown in FIG. 8, the slide door 60 closes the outlet 41 and opens the outlet 40. At this time, the front surface 71 is directed downward, the rear surface 72 is directed upward, and the front end side of the flap 70 is directed toward the rear lower side.

In this case, the airflow flowing in the main air passage 120 of the air duct 12a flows to the outlet 40 through the outlet air passage 56. At this time, the airflow from the main air passage 120 is decompressed in the blow-off air flow path 56, and the decompressed airflow expands when being discharged from the outlet 40 into the vehicle interior.

Therefore, the air flow in the blow-off air flow path 56 is blown out from the blow-out port 40 into the vehicle interior as a jet. This jet is blown toward the rear side in the vehicle traveling direction as indicated by an arrow F6. Hereinafter, for convenience of explanation, the airflow blown out from the blowout port 40 is referred to as a third airflow.

第 The third airflow blown out from the outlet 41 draws in the fourth airflow from the periphery of the third airflow as indicated by an arrow F7. At this time, the third airflow blown out from the outlet 40 and the fourth airflow drawn in from around the third airflow are drawn to the guide portion 501 by the Coanda effect, and the front surfaces of the guide portion 501 and the flap 70 are provided. It flows along 71.

３The third air flow and the fourth air flow which are drawn to the guide portion 501 are guided by the front surface 71 of the flap 70 and flow to the rear lower side as in F8. This flowed airflow is sent to the head of an occupant seated on the second row of seats 4 (hereinafter referred to as a rear occupant).

Thus, the amount of air blown to the rear occupant is increased as compared to the case where the third air flow blown out from the outlet 40 does not draw in the fourth air flow from the surroundings and blows the rear occupant. Can be. Therefore, the comfort of the rear occupant can be improved.

Furthermore, as shown in FIG. 4, the slide door 60 opens the

air outlets

40 and 41, respectively. At this time, the front surface 71 is directed forward, the rear surface 72 is directed rearward, and the distal end of the flap 70 is directed downward.

On the other hand, the third air flow and the fourth air flow flowing along the guide portion 501 are guided by the front surface 71 of the flap 70 and flow directly below.

Here, when the position of the flap 70 in the rotation direction is set by the operation of the occupant, the direction in which the rear surface 72 guides the first airflow and the second airflow can be arbitrarily set. In addition, the direction in which the front surface 71 guides the third airflow and the fourth airflow can be set arbitrarily.

Further, the air flow flowing from the scroll casing 33 to the main air passage 120 of the air duct 12b passes through the

blow air channels

56 and 57 and then flows from the

air outlets

40 and 41 as jets, similarly to the air duct 12a. Be blown out.

Here, the mechanism by which the airflow from the air outlet 41 of the air duct 12b is blown to the front occupant of the first row of seats 3 and the airflow from the air outlet 40 of the air duct 12b are blown rearward in the vehicle traveling direction. The mechanism is the same as that of the air duct 12a. Therefore, their description is omitted.

According to the present embodiment described above, the vehicle air blower 10 is arranged on the ceiling 2 in the vehicle interior and is arranged rearward of the head of the front occupant sitting on the first row of seats 3 in the vehicle traveling direction. The air supply duct 12a is provided.

The

air ducts

12a and 12b are provided with air outlets 41 that open in the vehicle interior toward the front side in the vehicle traveling direction to blow out the airflow. A guide portion 500 that is exposed to the lower side in the vehicle interior, on the rear side in the vehicle traveling direction with respect to the occupant's head and on the front side in the vehicle traveling direction with respect to the air outlet 41 of the

air ducts

12a and 12b. Is provided.

Here, the first airflow as a jet flow blown out from the outlet 41 draws the second airflow from around the first airflow. The first air flow and the second air flow are drawn to the guide portion 500 by the Coanda effect and flow along the guide portion 500.

{Circle around (1)} The first air flow and the second air flow flowing along the guide portion 500 are guided by the rear surface 72 of the flap 70 so as to flow to the rear side of the front occupant sitting on the first row of seats 3.

On the other hand, in the vehicle blower of Patent Document 1 described above, as shown in FIG. 9, in order to blow the airflow blown out from the blower outlet 40A to the rear side of the occupant of the front seat, the leading end side of the flap 70A is required. It is necessary to make an adjustment so as to point directly below (or in the forward direction in the vehicle traveling direction).

In this case, since one surface of the flap 70A is directed forward in the vehicle traveling direction, the air flow blown out from the outlet 40A is reversed by the one surface of the flap 70A, so that the pressure loss of the air flow increases. For this reason, noise is generated and the amount of air that reaches the rear side of the occupant of the front seat decreases, so that the comfort given to the occupant of the seat 3 in the first row decreases.

According to this embodiment, on the other hand, the first airflow and the second airflow are sent to the rear side of the occupant. Therefore, the amount of air that reaches the occupant is increased as compared with the case where the first airflow blown out from the air outlet 41 is sent to the rear side of the occupant without drawing in the second airflow from the surroundings. Can be. Therefore, the amount of air blown to the rear of the occupant of the seat 3 in the first row can be increased without increasing the number of fans and electric motors.

Here, it is not necessary to reverse the airflow blown out from the outlet 41 by a flap in order to blow the airflow blown out from the outlet 41 to the rear side of the occupant of the seat 3 in the first row. Therefore, it is possible to prevent a decrease in the amount of air blow and an occurrence of noise due to an increase in pressure loss.

According to the above, it is possible to provide the vehicle air blower 10 that improves the comfort given to the occupant of the first row of seats 3.

In the present embodiment, the slide door 60 opens at least one of the

outlets

40 and 41 to switch the outlet from which the air flow is blown. For this reason, the freedom of selecting the flow direction of the air flow can be improved.

In the present embodiment, the first air flow and the second air flow flowing along the guide portion 500 by the Coanda effect are guided such that the rear surface 72 of the flap 70 flows toward the rear of the occupant.

This allows the first air flow and the second air flow to flow smoothly toward the rear of the occupant of the first row of seats 3.

In the present embodiment, the rear inclined surface 55c and the guide portion 500 form a continuous wall.

Thereby, the first airflow blown out from the blowout port 41 can flow smoothly along the guide portion 500.

In the present embodiment, the third air flow and the fourth air flow flowing along the guide portion 501 by the Coanda effect are guided such that the front surface 71 of the flap 70 flows toward the front side of the occupant of the seat 4 in the second row. .

Thus, the third airflow and the fourth airflow can flow smoothly toward the front side of the occupant of the seat 4 in the second row.

では In the present embodiment, the front inclined surface 55b and the guide portion 501 form a continuous wall.

Thus, the third airflow blown out from the blowout port 40 can flow smoothly along the guide portion 501.

In the present embodiment, the first air flow and the second air flow are guided by the rear surface 72 of the flap 70. Therefore, the direction in which the first airflow and the second airflow guided by the rear surface 72 flow can be arbitrarily set by setting the position of the flap 70 in the rotation direction.

In the present embodiment, the third air flow and the fourth air flow are guided by the front surface 71 of the flap 70. Therefore, the direction in which the third airflow and the fourth airflow guided by the front surface 71 flow can be arbitrarily set by setting the position of the flap 70 in the rotation direction.
(Other embodiments)
(1) In the above embodiment, the example in which the

air ducts

12a and 12b are provided in the vehicle air blower 10 has been described. However, one air blow duct may be provided in the vehicle air blower 10 instead.

(2) In the above-described embodiment, the example in which the two

air outlets

40 and 41 are provided in the

air ducts

12a and 12b has been described. Good.

(3) In the above-described embodiment, an example has been described in which the air outlet 40 is disposed on the front side in the vehicle traveling direction with respect to the air outlet 41 in the

air ducts

12a and 12b. However, instead of this, the air outlet 40 may be arranged on the rear side in the vehicle traveling direction with respect to the air outlet 41 in the

air ducts

12a and 12b.

Alternatively, the outlet 40 may be arranged in the vehicle width direction with respect to the outlet 41 in the

air ducts

12a and 12b.

(4) In the above-described embodiment, an example has been described in which the air outlets 40 are arranged rearward in the vehicle traveling direction with respect to the occupant seated on the first row of seats 3 in the

ventilation ducts

12a and 12b. However, in place of this, the air outlet 40 may be arranged in the

air ducts

12a and 12b on the front side in the vehicle traveling direction with respect to the occupant seated on the seat 3 in the first row.

Alternatively, the air outlets 40 in the

air ducts

12a and 12b may be arranged so as to vertically overlap the occupant seated on the seat 3 in the first row.

(5) In the above-described embodiment, an example has been described in which the airflow sucked from the vehicle interior by the fan 31 through the intake port 24 is blown into the vehicle interior from the

air outlets

40 and 41 without adjusting the temperature.

However, instead of this, the air flow sucked from the vehicle interior through the air inlet 24 by the fan 31 may be temperature-controlled by the heat exchanger and blown out from the

air outlets

40 and 41 into the vehicle interior.

(6) In the above-described embodiment, an example has been described in which the airflow sucked from the vehicle interior by the fan 31 through the intake port 24 is blown out from the

air outlets

40 and 41 into the vehicle interior.

However, instead of this, the airflow sucked from outside the vehicle compartment by the fan 31 may be blown out from the

outlets

40 and 41 into the vehicle compartment. Alternatively, the airflow sucked from the outside of the vehicle compartment and the interior of the vehicle compartment by the fan 31 may be blown out from the

outlets

40 and 41 into the vehicle compartment.

(7) In the above embodiment, an example in which the slide door 60 is slid by the user's operation has been described. Alternatively, the slide door 60 may be slid by an electric motor.

(8) In the above-described embodiment, an example has been described in which the position of the flap 70 in the rotation direction is set by the user's operation. Alternatively, the position of the flap 70 in the rotation direction may be set by an electric motor. .

(9) In the above-described embodiment, an example has been described in which the blower unit 11 sucks the air in the vehicle compartment from the suction port 24 and blows the air from the

outlets

40 and 41 of the

blower ducts

12a and 12b. However, instead of this, air outside the vehicle compartment may be sucked in from the inlet 24 and blown out from the

outlets

40 and 41 of the

air ducts

12a and 12b.

Alternatively, air inside the vehicle compartment and air outside the vehicle compartment may be sucked in and blown out from the

outlets

40, 41 of the

air ducts

12a, 12b.

(10) In the first embodiment described above, an example was described in which the slide door 60 was provided with two shafts 61. Alternatively, the flap 70 may be provided with two shafts 61.

(12) In the first embodiment, an example in which the flap 70 is supported on the slide door 60 has been described. Alternatively, the flap 70 may be supported on the

air ducts

12a and 12b. Is also good.

In this case, two shafts 61 may be provided in the air duct 12a (or 12b). Alternatively, two shafts 61 may be provided on the flap 70.

(13) In the second embodiment, an example in which the flap 70 is supported on the slide door 60 has been described. Alternatively, the flap 70 may be supported on the air duct 12a. .

In this case, two shafts 61 may be provided in the air duct 12a. Alternatively, two shafts 61 may be provided on the flap 70.

(14) In the first and second embodiments, an example has been described in which the flap 70 is a cantilever whose one cross direction is supported by the two shafts 61 of the slide door 60.

Alternatively, the center of the flap 70 in the cross direction may be supported by the two shafts 61 of the slide door 60.

(15) The present disclosure is not limited to the above-described embodiment, and can be appropriately modified. In addition, the above-described embodiment and other embodiments are not irrelevant to each other, and can be appropriately combined unless a combination is clearly not possible. In addition, in the above-described embodiment and other embodiments, elements constituting the embodiment are not necessarily essential, unless otherwise specified and in principle considered to be clearly essential. Needless to say, there is nothing. Further, in the above embodiment and other embodiments, when numerical values such as the number, numerical value, amount, range, and the like of the constituent elements of the exemplary embodiment are mentioned, particularly when they are clearly indicated as essential, and clearly specified in principle However, the number is not limited to the specific number, except when limited to the number. In addition, in the above-described embodiment and other embodiments, when referring to the shapes, positional relationships, and the like of the components and the like, unless otherwise specified, and in principle, they are limited to specific shapes, positional relationships, and the like. It is not limited to the shape, the positional relationship, and the like.
(Summary)
According to the first aspect described in the above embodiment and some or all of the other embodiments, the vehicle blower includes a blower duct arranged on a ceiling in a vehicle compartment. The blower duct is provided on the rear side in the vehicle traveling direction with respect to an occupant seated in a seat in the vehicle interior, and has an outlet that opens toward the front side in the vehicle traveling direction in the vehicle interior and blows out an air flow as a jet.

(4) The airflow blown out from the air outlet draws in the airflow from around the airflow, and sends the drawn airflow and the airflow blown out from the air outlet to the rear side of the occupant.

According to the second aspect, the airflow blown out from the outlet is the first airflow, and the airflow drawn from the periphery of the first airflow by the first airflow blown out from the outlet is the second airflow. It is a flow and the outlet is a first outlet.

The air duct has a second outlet that opens in the vehicle interior toward the rear side in the vehicle traveling direction and that blows out an airflow as a jet toward the rear side in the vehicle traveling direction.

The third airflow blown out from the second air outlet draws in the fourth airflow from around the third airflow, and the drawn fourth airflow and the third airflow blown out from the second airflow outlet To blow.

Thereby, the third air flow and the fourth air flow can be blown toward the rear side in the vehicle traveling direction. For this reason, compared with the case where only the third airflow is blown toward the rear side in the vehicle traveling direction, it is possible to increase the amount of air blown to the rear side in the vehicle traveling direction.

According to the third aspect, there is provided a wind direction adjusting member including a front surface formed toward the front side in the vehicle traveling direction and a rear surface formed toward the rear side in the vehicle traveling direction.

(4) The rear surface of the wind direction adjusting member guides the first air flow and the second air flow, and the front surface of the wind direction adjusting member guides the third air flow and the fourth air flow.

According to the fourth aspect, the vehicle blower includes the slide adjustment unit. The first outlet is disposed rearward in the vehicle traveling direction with respect to the second outlet. The slide adjusting section is configured to be slidable in the vehicle traveling direction between the first outlet and the second outlet.

The slide adjusting unit opens one of the first and second outlets and closes the other by sliding.

This makes it possible to select an air outlet from which the air flow is blown out of the first air outlet and the second air outlet.

According to the fifth aspect, the wind direction adjustment member is supported by the slide adjustment unit so as to be rotatable around an axis extending in the vehicle width direction. By setting the position of the wind direction adjusting member in the rotation direction, the direction guided by the rear surface and the direction guided by the front surface are adjusted.

Thereby, the direction in which the first air flow and the second air flow are guided and the direction in which the third air flow and the fourth air flow are guided can be adjusted.

According to the sixth aspect, the air duct is disposed on the rear side in the vehicle traveling direction with respect to the first air outlet, is formed so as to be directed downward as approaching the first air outlet, and is directed toward the first air outlet. And an air flow path forming part for forming an air flow path for flowing an air flow inside the blower duct.

(4) The airflow that has passed through the airflow path is blown out from the first outlet as a jet to the rear side of the occupant.

According to the seventh aspect, the air duct is a wall disposed between the first air outlet and the air direction adjustment member, and is exposed to the lower side in the vehicle interior, and further extends in the vehicle traveling direction. It has a guide part formed.

The first air flow and the second air flow flow along the guide portion, and the first air flow and the second air flow flowing along the guide portion flow toward the rear side of the occupant at the rear surface of the wind direction adjusting member. I will guide you.

Accordingly, the first air flow and the second air flow flowing along the guide portion due to the Coanda effect can be smoothly flowed toward the rear side of the occupant by the rear surface of the wind direction adjusting member.

According to the eighth aspect, the air flow path forming section has an inclined upper wall section that forms a wall formed above the air flow path, and the inclined upper wall section and the guide section are connected to a continuous wall. Is configured.

Thereby, the first airflow blown out from the first blowout port can flow smoothly along the guide portion.

According to the ninth aspect, the air passage is the first air passage, and the air passage forming unit is the first air passage forming unit. The air duct is disposed on the front side in the vehicle traveling direction with respect to the second air outlet, and is formed so as to be directed downward as approaching the second air outlet, and the second air for flowing the air flow toward the second air outlet. A second air flow path forming section that forms a flow path inside the air duct is provided.

(4) The air flow that has passed through the second air flow path is blown into the vehicle interior as a jet from the second air outlet.

According to the tenth aspect, when the guide portion is the first guide portion, the air duct is disposed between the second air outlet and the wind direction adjusting member, and is exposed downward in the vehicle compartment; The vehicle further includes a second guide portion formed in the vehicle traveling direction.

(3) The third air flow and the fourth air flow flow along the second guide portion, and the front surface of the wind direction adjusting member guides the third air flow and the fourth air flow flowing along the guide portion.

Thus, the third air flow and the fourth air flow flowing along the guide portion by the Coanda effect can be smoothly guided by the front surface of the wind direction adjusting member.

According to the eleventh aspect, when the inclined upper wall portion is the first inclined upper wall portion, the second air flow path forming portion forms a wall formed above the second air flow path. It has two inclined upper walls. The second inclined upper wall portion and the second guide portion constitute a continuous wall.

Thus, the third airflow blown out from the second outlet can flow smoothly along the second guide portion.

Claims

It is arranged on the ceiling in the vehicle interior, is provided on the rear side in the vehicle traveling direction for the occupant seated on the seat (3) in the vehicle interior, and opens toward the front side in the vehicle traveling direction in the vehicle interior to form a jet. Air ducts (12a, 12b) each having an air outlet (41) for blowing air flow of
An air flow blown out from the air outlet draws an air flow from around the air flow, and a vehicle air blower blows the drawn air flow and the air flow blown out from the air outlet to the rear side of the occupant. apparatus.
The air flow blown out from the outlet is a first air flow, and the air flow drawn from the periphery of the first air flow by the first air flow blown out from the outlet is a second air flow. Is the first outlet,
The air duct includes a second outlet (40) that opens in the vehicle interior toward the rear side in the vehicle traveling direction and that blows out an airflow as a jet toward the rear side in the vehicle traveling direction,
The third airflow blown from the second air outlet draws in the fourth airflow from around the third airflow, and the drawn fourth airflow and the third air blown out from the second airflow outlet The air blower for vehicles according to claim 1 which blows a stream.
A wind direction adjusting member (70) having a front surface (71) formed toward the front side in the vehicle traveling direction and a rear surface (72) formed toward the rear side in the vehicle traveling direction;
The rear surface of the wind direction adjusting member guides the first air flow and the second air flow;
The vehicle blower according to claim 2, wherein the front surface of the wind direction adjusting member guides the third airflow and the fourth airflow.
A slide adjustment unit (60),
The first air outlet is disposed on the rear side in the vehicle traveling direction with respect to the second air outlet,
The slide adjustment unit is configured to be slidable in a vehicle traveling direction between the first outlet and the second outlet,
4. The vehicle blower according to claim 3, wherein the slide adjustment unit opens one of the first outlet and the second outlet and closes the other outlet by the slide movement. 5.
The wind direction adjustment member is supported by the slide adjustment unit so as to be rotatable around a shaft (61) extending in the vehicle width direction,
The vehicle blower according to claim 4, wherein a position in the rotation direction of the wind direction adjustment member is set to adjust a direction guided by the rear surface and a direction guided by the front surface.
The air duct is disposed on the rear side in the vehicle traveling direction with respect to the first air outlet, and is formed so as to be directed downward as approaching the first air outlet, and the air flow is directed toward the first air outlet. An air flow path forming portion (54b, 53b) for forming an air flow path (57) through which air flows inside the blower duct;
The vehicle blower according to any one of claims 3 to 5, wherein the airflow that has passed through the airflow path is blown out as a jet from the first outlet to the rear side of the occupant.
The blower duct is a wall disposed between the first outlet and the wind direction adjusting member, is exposed downward in the vehicle interior, and is formed in the vehicle traveling direction. It has a guide part (500),
The first air flow and the second air flow flow along the guide portion, and the first air flow and the second air flow flowing along the guide portion are separated by a rear surface of the wind direction adjusting member. The vehicle air blower according to claim 6, wherein the air blower is guided to flow toward the rear side of the occupant.
The air flow path forming portion has an inclined upper wall portion (55c) that forms a wall formed above the air flow path,
The vehicle blower according to claim 7, wherein the inclined upper wall portion and the guide portion form a continuous wall.
When the air flow path is a first air flow path and the air flow path forming section is a first air flow path forming section,
The blower duct is disposed on the front side in the vehicle traveling direction with respect to the second outlet, and is formed so as to be directed downward as approaching the second outlet, and circulates an airflow toward the second outlet. A second air flow path forming section (54a, 53a) for forming a second air flow path (56) to be formed inside the blower duct;
The vehicle air blower according to claim 8, wherein the airflow that has passed through the second air flow path is blown into the vehicle interior as a jet from the second outlet.
When the guide portion is a first guide portion, the blow duct is disposed between the second outlet and the wind direction adjusting member, and is exposed downward in the vehicle interior, and A second guide part (501) formed over the direction,
The third air flow and the fourth air flow flow along the second guide portion, and the third air flow and the fourth air flow flowing along the second guide portion are combined with each other by the wind direction adjusting member. The vehicle blower according to claim 9, wherein the front surface guides the vehicle.
When the inclined upper wall portion is a first inclined upper wall portion,
The second air flow path forming portion has a second inclined upper wall portion (55b) that forms a wall formed above the second air flow path,
The vehicle blower according to claim 10, wherein the second inclined upper wall portion and the second guide portion form a continuous wall.