JP2020172189A - Thin-type register for air conditioning - Google Patents

Abstract

To suppress a temperature of air for air conditioning blown from an outlet from approaching a temperature of ambient air.SOLUTION: An outlet 18 of a retainer 11 having a ventilation passage 13 of air A1 for air conditioning is formed of a pair of short side parts 21 opposite to each other, and a pair of long side parts opposite to each other in an intersecting state with both short side parts 21. The retainer 11 includes a pair of first opposite wall parts 15 opposite in a direction along the long side parts, and a pair of second opposite wall parts 16 opposite to each other in a direction along the short side parts 21. In the retainer 11, a plurality of fin main bodies 34 each of which has a plate shape are arranged in a separate state from each other in a direction along the long side parts. Each of the fin main bodies 34 is tiltably supported to the second opposite wall part 16 by a fin shaft 35 extending in a direction along the short side part 21. A downstream end part 15a of the one first opposite wall part 15 inclines with respect to the downstream end part 15a of the other first opposite wall part 15 so as to be closer on a downstream side in a flow direction of the air A1 for air conditioning.SELECTED DRAWING: Figure 3

Description

The present invention relates to a thin register for air conditioning that blows air for air conditioning sent from an air conditioner into a room through a rectangular air outlet.

The instrument panel of the vehicle incorporates an air-conditioning register for changing the direction of the air-conditioning air sent from the air-conditioning device and blown into the vehicle interior from the air outlet (see, for example, Patent Document 1). ). As one form of this air-conditioning register, various types (hereinafter referred to as "thin air-conditioning registers") in which the dimensions of the air outlet differ greatly between the vertical direction and the horizontal direction have been conventionally considered in order to improve the design. ..

This thin register for air conditioning includes a retainer in which a ventilation path for air for air conditioning is formed and a plurality of fins, similarly to a general register for air conditioning. The retainer has an outlet at the downstream end in the flow direction of the air conditioning air. In the thin register for air conditioning, the outlets are a pair of short sides facing each other and a pair of long sides facing each other in an intersecting state with respect to both short sides and each longer than each short side. It consists of a rectangular shape. The retainer includes a pair of first facing wall portions facing each other in the direction along the long side portion and a pair of second facing wall portions facing each other in the direction along the short side portion. The plurality of fins are arranged in the retainer so as to be separated from each other in the direction along the long side portion. Each fin is tiltably supported with respect to both second facing wall portions by a fin shaft extending in a direction along the short side portion.

In the thin air-conditioning register having the above configuration, when the air-conditioning air sent from the air-conditioning device flows into the retainer, it flows along the fins and is blown out from the air outlet. When each fin is placed in a neutral state parallel to the central axis of the ventilation path, air conditioning air is blown straight from the outlet along the central axis. The air-conditioning air blown out from the air outlet flows while entraining (taking in) the surrounding air and is blown to the occupants.

JP-A-2017-206068

However, in the conventional thin register for air conditioning, when the fins are set to the neutral state and the air for air conditioning is blown out from the outlet, the temperature approaches the ambient temperature under the influence of the ambient air. For example, when cold air-conditioning air is blown out from an outlet, the temperature of the air-conditioning air rises. Further, when warm air conditioning air is blown out from the outlet, the temperature of the air conditioning air drops. This tendency becomes more pronounced as the short side of the air outlet becomes shorter.

This is considered to be due to the following reasons.
The flow velocity distribution of the air conditioning air blown out from the air outlet on the plane orthogonal to the flow direction is defined as the flow velocity distribution of the air conditioning air. In this flow velocity distribution, the flow velocity increases as it approaches the central portion. Further, as the temperature approaches the central portion, the temperature approaches the temperature at which the air outlet blows out.

The shape of the flow velocity distribution when the air conditioning air is blown out from the outlet in a state parallel to the central axis is a flat shape in which the dimension along the short side is smaller than the dimension along the long side. Become. In the air-conditioning air having such a shape of the flow velocity distribution, the surrounding air easily reaches the central portion from the outside in the direction along the short side portion. This central portion is affected by the temperature of the surrounding air, and tends to cause a temperature change toward the side approaching that temperature. As a result, in the conventional thin register for air conditioning, the air conditioning air may be blown to the occupant at a temperature closer to the temperature of the ambient air than when it is blown out from the air outlet. In this case, the comfort of air conditioning is impaired.

The present invention has been made in view of such circumstances, and an object of the present invention is for air conditioning capable of suppressing the temperature of the air conditioning air blown out from the outlet from approaching the temperature of the ambient air. The purpose is to provide a thin register.

The thin register for air conditioning that solves the above problems includes a retainer in which a ventilation path for air for air conditioning is formed and has an outlet at a downstream end in the flow direction of the air for air conditioning, and the air outlets are paired with each other. The retainer is composed of a pair of long side portions that face each other in an intersecting state with respect to both short side portions and are longer than each short side portion, and the retainer is oriented along the long side portion. A pair of first facing wall portions facing each other and a pair of second facing wall portions facing each other in a direction along the short side portion are provided, and a plurality of fins are provided on the long side portion of each other in the retainer. Each fin is provided with a short side portion and a plate-shaped fin body extending along the flow direction, and each fin is provided with a plate-shaped fin body extending along the short side portion, and the second fin shaft extends along the short side portion. A thin register for air conditioning that is tiltably supported with respect to the facing wall portion, and the downstream end portion of one of the first facing wall portions in the flow direction is in the flow direction of the other first facing wall portion. It is inclined so as to approach the downstream end in the same direction toward the downstream end.

According to the above configuration, when the air conditioning air sent from the air conditioner flows into the retainer, it flows along the fins and then is blown out from the air outlet. A part of the air conditioning air flowing along both sides of the ventilation path along the long side is blown out from both sides of the air outlet in the direction along the long side after flowing along both first facing walls. To. At this time, if the downstream ends of both first facing walls in the above flow direction are parallel, the shape of the flow velocity distribution of the air conditioning air blown out from the outlet will be a shape corresponding to the shape of the outlet. Become. That is, the shape of the flow velocity distribution is a flat shape in which the dimension along the long side portion is longer than the dimension along the short side portion.

In this respect, according to the above configuration, the downstream end portion of one first facing wall portion is closer to the downstream end portion of the other first facing wall portion toward the downstream side in the flow direction of the air conditioning air. That is, it is inclined so that the distance between both downstream ends becomes narrower toward the downstream side. Therefore, the air-conditioning air that flows along each downstream end and is blown out from both side portions in the direction along the long side of the outlet flows in the direction along the long side as it moves away from the outlet toward the downstream side. Get closer to each other.

Therefore, the shape of the flow velocity distribution changes to a shape in which the difference between the dimension in the direction along the long side and the dimension in the direction along the short side becomes smaller toward the downstream side in the flow direction, and approaches a circle. I will go. In the air-conditioning air having such a flow velocity distribution, the surrounding air is less likely to reach the central portion than the air-conditioning air having the flat flow velocity distribution. This central portion is not easily affected by the temperature of the surrounding air and is not easily affected by temperature changes. In this way, it is possible to prevent the temperature of the air conditioning air blown out from the outlet from approaching the temperature of the surrounding air. Air-conditioning air with a temperature close to the temperature when it is blown out from the air outlet is blown to the occupants, improving the comfort of air conditioning.

In the thin register for air conditioning, a plurality of the fins are set as fin groups, and among the plurality of fins in the fin group, the fins at both ends in the direction along the long side portion are set as end fins, and next to each end fin. When the fins are quasi-end fins, the fins between the quasi-end fins are intermediate fins, and the intermediate fins are parallel to the central axis of the ventilation path, the neutral state of the fin group is defined as the neutral state. In the state, it is preferable that one of the end fins is inclined so as to be closer to the downstream side in the flow direction with respect to the other end fin.

According to the above configuration, in the neutral state, one end fin is closer to the other end fin toward the downstream side in the flow direction, that is, the distance between both end fins is narrower toward the downstream side. Tilt. A part of the air-conditioning air flowing on both sides of the ventilation path along the long side flows from both sides of the air outlet along the long side after flowing along the inclined fins at both ends as described above. It is blown out. These air-conditioning air approach each other in the direction along the long side as the distance from the outlet toward the downstream side increases. The amount of air-conditioning air that approaches each other increases as the distance from the outlet to the downstream side increases by the amount of these air-conditioning air.

Therefore, in the neutral state, the shape of the flow velocity distribution of the air conditioning air is closer to a circle than in the case where one end fin is not inclined with respect to the other end fin as described above.
In the thin register for air conditioning, in the neutral state, it is preferable that one of the quasi-end fins is inclined so as to be closer to the downstream side in the flow direction with respect to the other quasi-end fin.

According to the above configuration, in the neutral state, one quasi-end fin is closer to the other quasi-end fin on the downstream side in the flow direction, that is, the distance between the two quasi-end fins is closer to the downstream side. Tilt to narrow. A part of the air-conditioning air flowing on both sides in the direction along the long side of the ventilation path flows along both quasi-end fins inclined as described above, and then on both sides in the direction along the long side of the outlet. It is blown out from the part. These air-conditioning air approach each other in the direction along the long side as the distance from the outlet toward the downstream side increases. As the distance from the outlet to the downstream side increases by the amount of these air-conditioning airs, the amount of air-conditioning airs approaching each other in the direction along the long side becomes larger.

Therefore, in the neutral state, the shape of the flow velocity distribution of the air conditioning air is higher than that in the case where one quasi-end fin is not tilted with respect to the other quasi-end fin and only the end fin is tilted. It gets closer to a circle.

In the thin register for air conditioning, a plurality of the fins are set as fin groups, and among the plurality of fins in the fin group, the fins at both ends in the direction along the long side portion are set as end fins, and next to each end fin. When the fins are quasi-end fins, the fins between the quasi-end fins are intermediate fins, and the intermediate fins are parallel to the central axis of the ventilation path, the neutral state of the fin group is defined as the neutral state. In the state, it is preferable that one of the end fins is inclined so as to be farther from the other end fin toward the downstream side in the flow direction.

According to the above configuration, in the neutral state, one end fin is farther from the other end fin toward the downstream side in the flow direction, that is, the distance between the both end fins is widened toward the downstream side. Tilt. A part of the air-conditioning air flowing on both sides of the ventilation path in the direction along the long side flows along the fins at both ends inclined as described above, and then hits the downstream end portion to flow in the same downstream end portion. It can be changed in the direction along. The amount of air-conditioning air that flows along each downstream end and is blown out from both sides in the direction along the long side of the outlet increases due to the amount of air-conditioning air whose flow direction has been changed as described above. .. Along with this, the amount of air-conditioning air approaching each other in the direction along the long side increases as the distance from the outlet to the downstream side increases.

Therefore, in the neutral state, the shape of the flow velocity distribution of the air conditioning air approaches a circle as compared with the case where one end fin does not incline with respect to the other end fin as described above.
In the thin register for air conditioning, in the neutral state, it is preferable that one of the quasi-end fins is inclined so as to be farther from the other quasi-end fin toward the downstream side in the flow direction.

According to the above configuration, in the neutral state, one quasi-end fin is farther from the other quasi-end fin toward the downstream side in the flow direction, that is, the distance between the two quasi-end fins is toward the downstream side. Tilt to spread. A part of the air-conditioning air flowing on both sides in the direction along the long side of the ventilation path flows along both quasi-end fins inclined as described above, and then hits the downstream end portion to flow in the same downstream direction. Can be changed in the direction along the edge. The amount of air-conditioning air that flows along each downstream end and is blown out from the air outlet is further increased by the amount of the air-conditioning air whose flow direction is changed as described above. Along with this, the amount of air-conditioning air approaching each other in the direction along the long side increases as the distance from the outlet toward the downstream side increases.

Therefore, in the neutral state, the shape of the flow velocity distribution of the air conditioning air is higher than that in the case where one quasi-end fin is not tilted with respect to the other quasi-end fin and only the end fin is tilted. It gets closer to a circle.

In the thin register for air conditioning, the retainer has a condensing portion in a part of the flow direction in which the flow path area of the ventilation path becomes smaller toward the downstream side, and the condensing portion in the flow direction. The downstream end is located at the same level as the downstream end of the fin body in the same direction or upstream of the downstream end, and the upstream end of the condensing portion in the flow direction is from the upstream end of the fin body in the same direction. Is preferably located upstream.

According to the above configuration, the air-conditioning air that has flowed into the retainer flows through the condensing portion where the flow path area of the ventilation path becomes smaller toward the downstream side as described above, so that the flow velocity can be increased. Along with this, as the air-conditioning air blown out from both sides in the direction along the long side of the air outlet moves away from the air outlet to the downstream side, the force to approach each other in the direction along the long side becomes stronger. Be done. Therefore, the shape of the flow velocity distribution of the air conditioning air becomes a shape closer to a circle.

In the thin register for air conditioning, in the condensing portion, one of the second facing wall portions is inclined so as to be closer to the downstream side in the flow direction with respect to the other second facing wall portion. preferable.

By inclining one of the second facing wall portions with respect to the other second facing wall portion so as to satisfy the above conditions, the flow path portion of the ventilation path becomes smaller toward the downstream side in the flow direction. Is formed in the retainer.

According to the above-mentioned thin register for air conditioning, it is possible to prevent the temperature of the air conditioning air blown out from the outlet from approaching the temperature of the surrounding air.

The front view of the thin register for air-conditioning in 1st Embodiment. FIG. 2 is a cross-sectional view of a thin register for air conditioning along line 2-2 of FIG. FIG. 3 is a cross-sectional view of a thin register for air conditioning along line 3-3 of FIG. FIG. 4 is a cross-sectional view of a thin register for air conditioning along lines 4-4 of FIG. (A) is an explanatory diagram showing the flow velocity distribution of the air conditioning air blown out from the air outlet in the first embodiment, and (b) is an explanatory diagram showing the flow velocity distribution in the comparative example. It is a figure which shows the modification of the thin register for air-conditioning in 1st Embodiment, and is the cross-sectional view corresponding to FIG. It is a figure which shows the thin register for air-conditioning of 2nd Embodiment, and is the cross-sectional view corresponding to FIG.

(First Embodiment)
Hereinafter, the first embodiment embodied in the thin register for air conditioning for vehicles will be described with reference to FIGS. 1 to 5.

In the following description, the traveling direction (forward direction) of the vehicle is the front, the reverse direction is the rear, and the height direction is the vertical direction. Further, regarding the vehicle width direction (horizontal direction), the direction is defined based on the case where the vehicle is viewed from the rear.

In the passenger compartment, an instrument panel is provided in front of the front seats (driver's seat and passenger's seat) of the vehicle, and thin registers for air conditioning are incorporated in the central portion, side portions, etc. in the left-right direction thereof. The main functions of this thin register for air conditioning are to change the direction of the air for air conditioning sent from the air conditioner and blow out into the passenger compartment, and to adjust the amount of air for air conditioning to be blown out.

As shown in FIGS. 1 to 4, the outer shell portion of the thin air-conditioning register 10 is composed of a retainer 11. The retainer 11 is connected to a ventilation duct (not shown) of the air conditioner, and includes a retainer main body 12 and a bezel 17.

The retainer body 12 has a tubular shape with both ends open. The internal space of the retainer main body 12 constitutes a ventilation passage 13 which is a flow path of the air conditioning air A1. Here, regarding the flow direction of the air conditioning air A1, the side closer to the air conditioner is referred to as "upstream", "upstream side", etc., and the side far from the air conditioner is referred to as "downstream", "downstream side", etc. ..

The open end on the upstream side of the retainer main body 12 constitutes the inflow port 14 of the air conditioning air A1 sent from the air conditioner via the air duct.
The bezel 17 is a member that constitutes the downstream end of the retainer 11. The bezel 17 has an air outlet 18 for air conditioning air A1. The portion on the downstream side of the bezel 17 around the air outlet 18 constitutes the design surface of the thin register 10 for air conditioning.

The outlet 18 is composed of a pair of short side portions 21 facing each other and a pair of long side portions 22 facing each other in a crossed state with respect to both short side portions 21 and each longer than each short side portion 21. .. In the first embodiment, both short side portions 21 extend substantially in the vertical direction while being separated from each other in parallel. Both long side portions 22 extend in the left-right direction, which is a direction orthogonal to both short side portions 21, in a state of being separated from each other in parallel. The air outlet 18 having such a configuration has a horizontally long rectangular shape that is elongated in the horizontal direction rather than the vertical direction.

The retainer main body 12 has a pair of first facing wall portions 15 facing each other in the left-right direction along the long side portion 22, and a pair of second facing walls facing each other in the vertical direction along the short side portion 21. It is provided with a wall portion 16.

In the retainer main body 12, a downstream fin group, an upstream fin group, and a shut damper 41 are arranged in order from the outlet 18 toward the upstream side.
The downstream fin group is for changing the vertical direction of the air conditioning air A1 blown out from the air outlet 18, and includes a pair of downstream fins 23 and a barrel 24. Each main portion of both downstream fins 23 has a horizontally long plate shape extending in the left-right direction and the above-mentioned flow direction. Both downstream fins 23 are separated from each other in the vertical direction. Each downstream fin 23 is tiltably supported with respect to both first facing wall portions 15 by fin shafts (not shown) provided at both left and right ends thereof.

The barrel 24 includes a disk-shaped side plate portion 25 (see FIG. 3) arranged so as to be separated in the left-right direction, and a pair of upper and lower main fins 26 extending in the same direction and bridged between the side plate portions 25. It is composed of auxiliary fins 27 extending in the same direction between the two main fins 26 and spanning the plate portions 25 on both sides, and is arranged upstream of both downstream fins 23.

Both main fins 26 are separated from each other in the vertical direction. The downstream portions 26b of both main fins 26 are separated from each other in parallel. The upstream portion 26a of both main fins 26 is inclined with respect to the downstream portion 26b so that the distance between them increases toward the upstream. The auxiliary fins 27 are arranged in a state parallel to both downstream portions 26b in the central portion between both downstream portions 26b.

The barrel 24 is tiltably supported by both first facing wall portions 15 on a shaft 28 provided for each side plate portion 25.
The upstream fin group is for changing the direction of the air conditioning air A1 blown out from the outlet 18 in the left-right direction, and corresponds to the "fin group" in the claims. The upstream fin group is composed of a plurality of fins arranged in a state of being separated from each other in the left-right direction in the upstream of the auxiliary fin 27. These fins are arranged between a pair of end fins 31 arranged at both ends in the left-right direction, a pair of quasi-end fins 32 located between the end fins 31 next to the same end fins 31, and both quasi-end fins 32. It is composed of a plurality of intermediate fins 33. The both end fins 31, both quasi-end fins 32, and the plurality of intermediate fins 33 correspond to "fins" within the scope of the claims, and have the same configuration as each other. The main portions of the fins 31 at both ends, the fins 32 at both quasi-ends, and all the intermediate fins 33 are formed by a plate-shaped fin body 34 extending in the vertical direction and the flow direction. In the first embodiment, as the fin main body 34, one having a vertical dimension larger than that of the downstream portion in the upstream portion of the fin main body 34 is used (see FIG. 2). In the upstream portion of the fin main body 34, the vertical dimension is constant in the flow direction. Further, in the downstream portion of the fin main body 34, the vertical dimension is constant in the flow direction.

The fin main bodies 34 of all the intermediate fins 33 are arranged in the left-right direction at substantially equal intervals in a state of being substantially parallel to each other.
Both end fins 31, both quasi-end fins 32, and all intermediate fins 33 are provided with fin shafts 35 extending in the vertical direction at the upper end and lower end of the fin body 34, and both of these fin shafts 35 It is supported by the second facing wall portion 16 so as to be tiltable.

Each upper fin shaft 35 projects upward from the upper second facing wall portion 16, and the arm 36 extends upstream from this protruding portion. A connecting pin 37 projects upward from the upstream end of each arm 36. The connecting pins 37 of the fins 31 at both ends, the fins 32 at both quasi-ends, and all the intermediate fins 33 are connected to each other by connecting rods 38 extending in the left-right direction. The link mechanism LM is composed of fin shafts 35, arms 36, connecting pins 37, and connecting rods 38 in the fins 31 at both ends, the fins 32 at both quasi-ends, and all the intermediate fins 33, respectively.

The shut damper 41 is for adjusting the amount of air-conditioning air A1 blown out from the air outlet 18, and is arranged upstream of the upstream fin group of the ventilation passage 13. The adjustment of the blowout amount includes closing the ventilation passage 13 to block the blowout. The main part of the shut damper 41 has a plate shape extending in the left-right direction and the above-mentioned flow direction. The shut damper 41 has damper shafts 42 on both left and right sides (only the right damper shaft 42 is shown in FIG. 3), and is supported by both first facing wall portions 15 on both damper shafts 42 so as to be tiltable. ing.

As described above, the basic structure of the thin register 10 for air conditioning of the first embodiment is configured. In the first embodiment, the thin register 10 for air conditioning further has the following features.
Feature 1: As shown in FIG. 3, the downstream end portion 15a of one first facing wall portion 15 is inclined so as to approach the downstream end portion 15a of the other first facing wall portion 15 toward the downstream side. There is. In the first embodiment, each downstream end portion 15a is inclined with respect to the central axis CL so as to approach the central axis CL of the ventilation passage 13 toward the downstream side. Therefore, the distance D1 between both downstream end portions 15a becomes narrower toward the downstream side.

Feature 2: As shown in FIG. 3, the state in which all the intermediate fins 33 in the upstream fin group are parallel to the central axis CL is referred to as the "neutral state" of the upstream fin group.
In the neutral state, one end fin 31 is inclined so as to be closer to the downstream side with respect to the other end fin 31. In the first embodiment, each end fin 31 is inclined with respect to the central axis CL so as to be closer to the central axis CL toward the downstream side. The angle formed by the end fins 31 with respect to the central axis CL is the same between the end fins 31.

Feature 3: As shown in FIG. 3, in the neutral state, one quasi-end fin 32 is inclined so as to be closer to the downstream side with respect to the other quasi-end fin 32. In the first embodiment, each of the quasi-end fins 32 is inclined with respect to the central axis CL so as to be closer to the central axis CL toward the downstream side. The angle formed by the quasi-end fin 32 with respect to the central axis CL is the same between the quasi-end fins 32.

Feature 4: As shown in FIGS. 2 and 4, the retainer main body 12 has a flow condensing portion 19 in a part of the flow direction in which the flow path area becomes smaller toward the downstream side. In the contracted flow portion 19, one of the second facing wall portions 16 is inclined so as to be closer to the downstream side with respect to the other second facing wall portion 16. In the first embodiment, each of the second facing wall portions 16 is inclined with respect to the central axis CL so as to approach the central axis CL toward the downstream side. Therefore, the distance D2 between the two second facing wall portions 16 narrows toward the downstream side, and the flow path area of the ventilation passage 13 at the contraction portion 19 becomes maximum at the upstream end 19a, gradually decreases toward the downstream side, and downstream. It becomes the minimum at the end 19b.

As shown in FIG. 2, in the region where the upstream portion of the fin body 34, which has a large vertical dimension, is tilted, the second facing wall portions 16 partially with respect to the central axis CL. It is formed in parallel.

The downstream end 19b is located at the same as the downstream end of the fin main body 34 or upstream of the downstream end in the flow direction. Further, the upstream end 19a is located upstream of the upstream end of the fin main body 34 in the flow direction. In the first embodiment, the downstream end 19b is located between the upstream end and the downstream end of the fin body 34 in the neutralized upstream fin group. Further, the upstream end 19a is located between the inflow port 14 and the upstream end of the shut damper 41 parallel to the central axis CL.

Next, the operation of the first embodiment configured as described above will be described. In addition, the effects caused by the action will also be described.
As a premise, as shown in FIGS. 2 to 4, it is assumed that the shut damper 41 is in a state parallel to the central axis CL, that is, in a fully open state, and the upstream fin group is in a neutral state. Further, the downstream portions 26b and the auxiliary fins 27 of both main fins 26 in the barrel 24 are made parallel to the central axis CL, and the main portions of both downstream fins 23 are made parallel to the central axis CL. It is assumed that

In the above state, the air conditioning air A1 that has flowed into the retainer 11 from the inflow port 14 first flows separately into the upper side and the lower side of the shut damper 41. The air-conditioning air A1 that has passed through the shut damper 41 flows between the fin bodies 34 adjacent to each other in the upstream fin group, or between the fin body 34 at the end fins 31 and the first facing wall portion 15 adjacent thereto. , Flows into the barrel 24.

The air conditioning air A1 flows in the barrel 24 along the inclined upstream portion 26a of both main fins 26, and is collected between the two downstream portions 26b. Then, the air-conditioning air A1 flows straight between the downstream portion 26b and the auxiliary fins 27 and between both downstream fins 23, and then is blown straight from the outlet 18 to the downstream side. The air-conditioning air A1 blown out from the air outlet 18 flows while entraining (taking in) the surrounding air and is blown to the occupant.

By the way, as shown in FIG. 3, a part of the air-conditioning air A1 that flows into the retainer 11 and flows through the left and right side portions of the ventilation passage 13 flows along both first facing wall portions 15. These air-conditioning air A1 flows along each downstream end portion 15a and then is blown out from the left and right side portions of the air outlet 18.

Here, as shown in FIGS. 5A and 5B, the flow velocity distribution of the air conditioning air A1 blown out from the outlet 18 on the plane orthogonal to the flow direction is the flow velocity distribution of the air conditioning air A1. And. In this flow velocity distribution, the flow velocity increases as it approaches the central portion. Further, as the temperature approaches the central portion, the temperature approaches the temperature at which the air outlet 18 is blown out. The central part of the flow velocity distribution is also called a potential core PC. The potential core PC is a layer that tries to maintain the temperature when blown out from the outlet 18.

Further, a conventional thin register for air conditioning in which both downstream end portions 15a are formed in parallel with each other is used as a comparative example. In this comparative example, the shape of the flow velocity distribution of the air conditioning air A1 corresponds to the shape of the air outlet 18. That is, as shown in FIG. 5B, the shape of the flow velocity distribution is a flat shape in which the dimension in the left-right direction is longer than the dimension in the up-down direction.

However, in the first embodiment, as shown in FIG. 3, both downstream end portions 15a are inclined with respect to the central axis CL, so that one downstream end portion 15a is on the downstream side with respect to the other downstream end portion 15a. It is inclined so as to get closer to each other, that is, the distance D1 between both downstream ends 15a becomes narrower toward the downstream side (feature 1). Therefore, the air-conditioning air A1 that flows along each downstream end portion 15a and is blown out from the left and right side portions of the air outlet 18 approaches each other in the left-right direction as it moves away from the air outlet 18 toward the downstream side.

Therefore, the shape of the flow velocity distribution is a flat shape in the vicinity of the outlet 18 in which the dimension in the left-right direction is longer than the dimension in the up-down direction. However, the shape changes to a shape in which the difference between the horizontal dimension and the vertical dimension becomes smaller toward the downstream side, and approaches a circular shape as shown in FIG. 5A. In the air-conditioning air A1 having such a flow velocity distribution, the surrounding air reaches the central portion (potential core PC) as compared with the air-conditioning air A1 having the flat flow velocity distribution (see FIG. 5B). It's hard to do. This central portion is not easily affected by the temperature of the surrounding air and is not easily affected by temperature changes. In this way, it is suppressed that the temperature of the air conditioning air A1 blown out from the air outlet 18 approaches the temperature of the surrounding air.

Air-conditioning air A1 having a temperature close to the temperature when blown out from the air outlet 18 is blown to the occupant. For example, when cold air-conditioning air A1 is blown out from the air outlet 18 under a high temperature condition such as summer, it is affected by the surrounding air having a temperature higher than that of the air-conditioning air A1. The phenomenon that the temperature of the air conditioning air A1 rises is suppressed. Cold air-conditioning air A1 close to the temperature at which the air is blown out from the air outlet 18 is blown to the occupants.

In addition, when warm air-conditioning air A1 is blown out from the outlet 18 under low temperature conditions such as winter, the air-conditioning is affected by the surrounding air whose temperature is lower than that of the air-conditioning air A1. The phenomenon that the temperature of the working air A1 becomes low is suppressed. Warm air-conditioning air A1 close to the temperature when blown out from the air outlet 18 is blown to the occupants.

Therefore, the air-conditioning air A1 having a temperature that makes the occupant feel comfortable can be blown to the occupant, and the comfort can be improved by the air-conditioning.
When a force toward the left or right is applied to any fin body 34 in the upstream fin group through an operation of an operation knob or the like (not shown), the fin body 34 moves left and right with the fin shaft 35 as a fulcrum. Of the directions, it is tilted in the direction in which the force is applied. This tilt is transmitted to the other fin body 34 in the upstream fin group via the link mechanism LM. By this transmission, the other fin main body 34 is tilted in the same direction as the fin main body 34 in synchronization with the fin main body 34 to which the force is applied. All fin bodies 34 in the upstream fin group are in a state of being inclined with respect to the central axis CL. The air-conditioning air A1 flows along the inclined fin body 34 as described above, so that the air can be turned and blown out from the outlet 18 toward the diagonally left or diagonally right.

According to the first embodiment, the following effects can be obtained in addition to the above.
As shown in FIG. 3, in the neutral state, one end fin 31 is closer to the other end fin 31 toward the downstream side, that is, the distance between the end fins 31 is narrower toward the downstream side. Tilt (feature 2). A part of the air-conditioning air A1 flowing through the left and right side portions of the ventilation passage 13 flows along the both end fins 31 inclined as described above, and then is blown out from the left and right side portions of the air outlet 18. These air-conditioning air A1s approach each other in the left-right direction as they move away from the air outlet 18 toward the downstream side. The amount of the air-conditioning air A1 that approaches each other increases as the distance from the outlet 18 to the downstream side increases by the amount of the air-conditioning air A1.

Therefore, in the neutral state, the shape of the flow velocity distribution of the air conditioning air A1 approaches a circle as compared with the case where one end fin 31 does not incline with respect to the other end fin 31 as described above. Therefore, also in this respect, it is possible to suppress the ambient air from reaching the central portion in the flow velocity distribution, and further suppress the temperature of the central portion from being affected by the temperature of the ambient air. It is possible to enhance the effect of improving the comfort of air conditioning by blowing air-conditioning air A1 having a temperature closer to the temperature when blown out from the air outlet 18 to the occupants.

As shown in FIG. 3, in the neutral state, one quasi-end fin 32 is closer to the other quasi-end fin 32 on the downstream side, that is, the distance between the two quasi-end fins 32 is closer to the downstream side. It tilts so that it narrows (feature 3). A part of the air-conditioning air A1 flowing through the left and right side portions of the ventilation passage 13 flows along both the quasi-end fins 32 inclined as described above, and then is blown out from the left and right side portions of the air outlet 18. These air-conditioning air A1s approach each other in the left-right direction as they move away from the air outlet 18 toward the downstream side. By adding these air-conditioning air A1, the amount of air-conditioning air A1 approaching each other in the left-right direction further increases as the distance from the air outlet 18 toward the downstream side increases.

Therefore, in the neutral state, as described above, the flow velocity distribution of the air conditioning air A1 is higher than that in the case where one quasi-end fin 32 is not tilted with respect to the other quasi-end fin 32 and only the end fin 31 is tilted. The shape of is closer to a circle. Therefore, also in this respect, it is possible to further enhance the effect of improving the comfort by air conditioning by blowing the air conditioning air A1 having a temperature closer to the temperature when blown out from the air outlet 18 to the occupants.

-In the flow condensing portion 19 of the first embodiment, as shown in FIGS. 2 and 4, both the second facing wall portions 16 are centered so that the distance D2 between the two second facing wall portions 16 becomes narrower toward the downstream side. It is inclined with respect to the axis CL. One second facing wall portion 16 is inclined so as to approach the other second facing wall portion 16 toward the downstream side (feature 4). The flow path area of the ventilation passage 13 in the condensing portion 19 is maximum at the upstream end 19a, gradually decreases toward the downstream side, and is minimum at the downstream end 19b.

Therefore, the air-conditioning air A1 that has flowed into the retainer 11 flows through the condensing portion 19 in which the flow path area becomes smaller toward the downstream side as described above, so that the flow velocity can be increased. Then, among the air-conditioning air A1 having a high flow velocity in this way, the air flowing through the left and right side portions in the ventilation passage 13 flows along the fin main body 34 in each of the end fin 31 and the quasi-end fin 32, or It flows along the downstream end portion 15a of the first facing wall portion 15. As the air-conditioning air A1 having a high flow velocity flows as described above, the air-conditioning air A1 blown out from the left and right side portions of the outlet 18 will approach each other in the left-right direction as it moves away from the outlet 18 to the downstream side. The power to do is strengthened. The shape of the flow velocity distribution of the air conditioning air A1 is closer to a circle. Therefore, also in this respect, it is possible to enhance the effect of improving the comfort by air conditioning by blowing the air conditioning air A1 having a temperature closer to the temperature when blown out from the air outlet 18 to the occupant.

(Second Embodiment)
Next, a second embodiment of the thin register for air conditioning will be described with reference to FIG. 7.
The second embodiment has the following feature 5 instead of the above feature 2. Further, instead of the above feature 3, it has the following feature 6.

Feature 5: In the neutral state, one end fin 31 is inclined so as to be farther from the other end fin 31 toward the downstream side. In the second embodiment, each end fin 31 is inclined with respect to the central axis CL so as to be farther from the central axis CL toward the downstream side. The angle formed by the end fins 31 with respect to the central axis CL is the same between the end fins 31.

Feature 6: In the neutral state, one quasi-end fin 32 is inclined so as to be farther from the other quasi-end fin 32 toward the downstream side. In the second embodiment, each of the quasi-end fins 32 is inclined with respect to the central axis CL so as to be farther from the central axis CL toward the downstream side. The angle formed by the quasi-end fin 32 with respect to the central axis CL is the same between the quasi-end fins 32.

The configuration other than the above is the same as that of the first embodiment. Therefore, in the second embodiment, the same elements as those described in the first embodiment are designated by the same reference numerals, and duplicate description will be omitted.
Therefore, the actions and effects of the features 1 and 4 can be obtained in the second embodiment as in the first embodiment.

Further, in the neutral state, the end fin 31 and the quasi-end fin 32 are inclined in the direction opposite to that of the first embodiment with respect to the central axis CL, so that the following actions and effects can be obtained.
In the neutral state, the one end fin 31 is inclined so as to be farther from the other end fin 31 toward the downstream side, that is, the distance between the both end fins 31 is widened toward the downstream side (feature 5). A part of the air-conditioning air A1 flowing through the left and right side portions of the ventilation passage 13 flows along the fins 31 at both ends inclined as described above, and then hits the downstream end portion 15a to change the flow direction to the downstream end portion 15a. It can be changed in the direction along. As the air-conditioning air A1 whose flow direction is changed as described above, the amount of the air-conditioning air A1 that flows along each downstream end portion 15a and is blown out from the left and right side portions of the air outlet 18 increases. Along with this, the amount of air-conditioning air A1 approaching each other in the left-right direction increases as the distance from the air outlet 18 increases toward the downstream side.

Therefore, in the neutral state, the shape of the flow velocity distribution of the air conditioning air A1 approaches a circle as compared with the case where one end fin 31 does not incline with respect to the other end fin 31 as described above. Therefore, also in this respect, it is possible to suppress the ambient air from reaching the central portion in the flow velocity distribution, and further suppress the temperature of the central portion from being affected by the temperature of the ambient air.

Further, in the neutral state, one quasi-end fin 32 is tilted toward the other quasi-end fin 32 toward the downstream side, that is, the distance between the two quasi-end fins 32 is widened toward the downstream side. (Feature 6). A part of the air-conditioning air A1 flowing through the left and right side portions of the ventilation passage 13 flows along both the quasi-end fins 32 inclined as described above, and then hits the downstream end portion 15a to flow in the same downstream end portion. It can be changed in the direction along 15a. The amount of air-conditioning air A1 that flows along each downstream end portion 15a and is blown out from the air outlet 18 increases by the amount of the air-conditioning air A1 whose flow direction is changed as described above. Along with this, the amount of air-conditioning air A1 approaching each other in the left-right direction increases as the distance from the air outlet 18 increases toward the downstream side.

Therefore, in the neutral state, as described above, the flow velocity distribution of the air conditioning air A1 is higher than that in the case where one quasi-end fin 32 is not tilted with respect to the other quasi-end fin 32 and only the end fin 31 is tilted. The shape of is closer to a circle. Therefore, also in this respect, it is possible to suppress the ambient air from reaching the central portion in the flow velocity distribution, and further suppress the temperature of the central portion from being affected by the temperature of the ambient air.

In this way, according to the second embodiment, it is possible to enhance the effect of improving the comfort by air conditioning by blowing the air conditioning air A1 having a temperature closer to the temperature when blown out from the air outlet 18 to the occupant.

According to the second embodiment, the following effects can be obtained in addition to the above.
As shown in FIGS. 3 and 7, when the upstream fin group is in the neutral state and the end fin 31 is inclined with respect to the central axis CL, the upstream end of the end fin 31 and the adjacent first facing wall portion 15 The interval between them is defined as the interval D3. The interval D3 in the second embodiment shown in FIG. 7 is wider than the interval D3 in the first embodiment shown in FIG. The amount of air-conditioning air A1 flowing between the end fin 31 and the adjacent first facing wall portion 15 is larger in the second embodiment than in the first embodiment. More air conditioning air A1 hits the downstream end 15a and flows toward the central axis CL. The shape of the flow velocity distribution of the air conditioning air A1 can be made closer to a circular shape.

It should be noted that each of the above-described embodiments can also be implemented as a modified example obtained by modifying this as follows.
<About outlet 18>
-At the outlet 18, both short side portions 21 and both long side portions 22 do not necessarily have to be orthogonal to each other, and intersect slightly diagonally on condition that the outlet 18 is a rectangle or a quadrangle close to a rectangle. You may.

<About upstream fins>
If the combination of the end fin 31 and the quasi-end fin 32 is a fin combination, this fin combination is located on both the left and right sides of the upstream fin group. The end fins 31 and the quasi-end fins 32 for each fin combination may be arranged so as to take the following aspects in relation to the central axis CL when the upstream fin group is in the neutral state.

(A) In a mode in which only one end fin 31 is inclined with respect to the central axis CL so as to approach the central axis CL toward the downstream side or move away from the central axis CL in only one fin combination.

(B) In only one fin combination, both the end fin 31 and the quasi-end fin 32 are inclined with respect to the center axis CL so as to approach the center axis CL toward the downstream side or move away from the center axis CL. Aspect.

(C) In each of the two fin combinations, only the end fin 31 is inclined with respect to the central axis CL so as to be closer to the central axis CL toward the downstream side or away from the central axis CL.

(D) In each of the two fin combinations, both the end fin 31 and the quasi-end fin 32 are inclined with respect to the center axis CL so as to approach the center axis CL toward the downstream side or move away from the center axis CL. Aspects to be used. The first and second embodiments described above correspond to the aspect (d).

When the upstream fin group is in the neutral state and both end fins 31 in both fin combinations are inclined with respect to the central axis CL, the angle formed by the end fins 31 with respect to the central axis CL is between the fins 31 at both ends. It may be different.

When the upstream fin group is in the neutral state and both the quasi-end fins 32 in both fin combinations are inclined with respect to the central axis CL, the angle formed by the quasi-end fins 32 with respect to the central axis CL is the both quasi-ends. It may be different between the fins 32.

-When the upstream fin group is in the neutral state and both the end fin 31 and the quasi-end fin 32 in the same fin combination are inclined with respect to the central axis CL, the angle formed with respect to the central axis CL is the end fin 31. And the quasi-end fin 32 may be the same or different.

As shown by the solid line in FIG. 6, as the fin main body 34 in the upstream fin group, one having a constant vertical dimension at any place in the flow direction may be used.
As shown by the alternate long and short dash line in FIG. 6, the upper edge portion of each fin main body 34 in the upstream fin group is lowered toward the downstream side corresponding to the upper second facing wall portion 16 in the condensing portion 19. May be tilted with respect to the central axis CL. Similarly, the lower edge portion of each fin body 34 may be inclined with respect to the central axis CL so as to correspond to the lower second facing wall portion 16 in the contraction portion 19 and to be higher toward the downstream side. .. By doing so, the gap between the upper edge portion and the upper second facing wall portion 16 can be reduced, and the gap between the lower edge portion and the lower second facing wall portion 16 can be reduced. .. When each fin body 34 is tilted in the left-right direction, it is possible to regulate the flow of the air-conditioning air A1 through the gap and prevent the directivity from being lowered due to the flow.

However, if the size of the gap is excessively small, there is a risk of interference with the second facing wall portion 16 when each fin main body 34 is tilted in the left-right direction. Therefore, it is desirable that the size of the gap is set so that the fin main body 34 and the second facing wall portion 16 do not interfere with each other when the fin main body 34 is tilted in the left-right direction. From the viewpoint of suppressing the decrease in directivity, the size of the gap is the minimum that the fin main body 34 and the second facing wall portion 16 do not interfere with each other when the fin main body 34 is tilted in the left-right direction. It is desirable to set the size.

As shown in FIG. 6, the extending direction of the arm 36 in each of the both end fins 31, both quasi-end fins 32 and all the intermediate fins 33 is in the direction opposite to that of the first embodiment, that is, in the direction toward the downstream. May be changed. In this case, a connecting pin 37 is provided at the downstream end of each arm 36.

The downstream end of the fin body 34 in FIGS. 2 and 6 may be changed to the same position as the downstream end of the condensing portion 19 in the flow direction.
-The number of intermediate fins 33 may be changed. The minimum possible value for this number is "1".

<About the contraction section 19>
In place of or in addition to the second facing wall portion 16, one of the first facing wall portions 15 is placed on the other first facing wall portion so that the distance between the two first facing wall portions 15 becomes narrower toward the downstream side. It may be inclined so as to be closer to the downstream side with respect to 15. Even so, the contracted flow portion 19 whose flow path area becomes smaller toward the downstream side can be formed in a part of the retainer 11.

-The upstream end 19a of the condensing portion 19 may be set to the upstream side of each of the above embodiments. When set to the most upstream side, the upstream end 19a may match the inflow port 14.
<About other matters>
-As the downstream fin group and the shut damper 41, those having a configuration different from that of each of the above embodiments may be adopted.

-The thin register for air conditioning in the first embodiment may not have at least one of the above features 2 to 4 except for the following exception 1.
Exception 1: If the feature 2 is not provided, the feature 3 is not provided at the same time. That is, the thin register for air conditioning has feature 3 on the premise that it has feature 2.

Further, the thin register for air conditioning in the second embodiment may not have at least one of the above features 4 to 6 except for the following exception 2.
Exception 2: If the feature 5 is not provided, the feature 6 is not provided at the same time. That is, the thin register for air conditioning has feature 6 on the premise that it has feature 5.

In any of the above modifications, since the air-conditioning thin register has the above-mentioned feature 1, the effect of suppressing the temperature of the air-conditioning air A1 blown out from the outlet 18 from approaching the temperature of the surrounding air can be obtained. Be done.

-The thin register for air conditioning may be provided in a place different from the instrument panel in the vehicle interior.
-The thin register for air conditioning can be widely applied not only to vehicles but also to vehicles as long as the direction of the air for air conditioning sent from the air conditioner and blown into the room can be adjusted by fins.

-The thin register for air conditioning may be arranged so that the air outlet 18 is vertically long. In this case, the downstream fins 23 and the barrel 24 are elongated in the vertical direction, respectively. Further, as both end fins 31, both quasi-end fins 32 and intermediate fins 33 in the upstream fin group, those extending in the left-right direction and the above-mentioned flow direction are used, respectively, and these are arranged in a state of being separated from each other in the up-down direction.

10 ... Thin register for air conditioning, 11 ... Retainer, 13 ... Ventilation path, 15 ... First facing wall, 15a ... Downstream end, 16 ... Second facing wall, 18 ... Outlet, 19 ... Condensing, 19a ... upstream end, 19b ... downstream end, 21 ... short side, 22 ... long side, 31 ... end fin, 32 ... quasi-end fin, 33 ... intermediate fin, 34 ... fin body, 35 ... fin shaft, A1 ... air conditioning Air conditioning, CL ... Central axis.

Claims (7)

A ventilator for air conditioning air is formed, and a retainer having an outlet at the downstream end in the flow direction of the air conditioning air is provided.
The outlet is composed of a pair of short sides facing each other and a pair of long sides facing each other in an intersecting state with respect to both short sides and longer than each short side.
The retainer includes a pair of first facing wall portions facing each other in a direction along the long side portion and a pair of second facing wall portions facing each other in a direction along the short side portion.
In the retainer, a plurality of fins are arranged so as to be separated from each other in a direction along the long side portion.
Each fin includes the short side portion and a plate-shaped fin body extending along the flow direction, and is slidably supported by the fin shaft extending in the direction along the short side portion with respect to the second facing wall portion. It is a thin register for air conditioning.
The downstream end portion of one of the first facing wall portions in the flow direction is inclined so as to approach the downstream end portion of the other first facing wall portion in the flow direction toward the downstream side in the same direction. Thin register for air conditioning. A plurality of the fins are designated as fin groups, and among the plurality of fins in the fin group, the fins at both ends in the direction along the long side portion are designated as end fins, and the fins adjacent to each end fin are designated as quasi-end fins. In the case where the fin between the two quasi-end fins is an intermediate fin and the intermediate fin is parallel to the central axis of the ventilation path as the neutral state of the fin group.
The thin register for air conditioning according to claim 1, wherein in the neutral state, one end fin is inclined so as to be closer to the downstream side in the flow direction with respect to the other end fin. The thin register for air conditioning according to claim 2, wherein in the neutral state, one of the quasi-end fins is inclined so as to be closer to the downstream side in the flow direction with respect to the other quasi-end fin. A plurality of the fins are designated as fin groups, and among the plurality of fins in the fin group, the fins at both ends in the direction along the long side portion are designated as end fins, and the fins adjacent to each end fin are designated as quasi-end fins. In the case where the fin between the two quasi-end fins is an intermediate fin and the intermediate fin is parallel to the central axis of the ventilation path as the neutral state of the fin group.
The thin register for air conditioning according to claim 1, wherein in the neutral state, one end fin is inclined so as to be farther toward the downstream side in the flow direction with respect to the other end fin. The thin register for air conditioning according to claim 4, wherein in the neutral state, one of the quasi-end fins is inclined so as to be farther toward the downstream side in the flow direction with respect to the other quasi-end fin. The retainer has a condensing portion in a part of the flow direction in which the flow path area of the ventilation path becomes smaller toward the downstream side.
The downstream end of the condensing portion in the flow direction is located at the same as or upstream of the downstream end of the fin body in the same direction.
The thin register for air conditioning according to any one of claims 1 to 5, wherein the upstream end of the condensing portion in the flow direction is located upstream of the upstream end of the fin body in the same direction. The thin type for air conditioning according to claim 6, wherein in the condensing portion, one of the second facing wall portions is inclined so as to be closer to the downstream side in the flow direction with respect to the other second facing wall portion. register.