WO2019230902A1 - Blowout unit - Google Patents

Abstract

This blowout unit, which controls the amount of air that is blown out from an air conditioning unit (1), is provided with a plurality of wind direction plates that are arranged at intervals in the circumferential direction about an axis (S), wherein air passages (57a-57d, 58a-58d, 59a-59d), through which air passes, are formed between two adjacent wind direction plates in the circumferential direction, among the plurality of wind direction plates, when a direction in which the axis extends is taken as an axial direction, each of the plurality of wind direction plates is configured to proceed in one circumferential direction from one side of the axial direction toward the other side of the axial direction to turn air flows, which pass through the air passages, about the axial line, and the plurality of wind direction plates are formed such that first inclination angles (θ2a, θ2b, θ2c, θ2d) of radially inner areas (53a, 54a, 55a, 56a) and first inclination angles (θ1a, θ1b, θ1c, θ1d) of radially outer areas (53b, 54b, 55b, 56b) are different from each other, respectively.

Description

Blowout unit Cross-reference to related applications

This application is based on Japanese Patent Application No. 2018-104715 filed on May 31, 2018, the description of which is incorporated herein by reference.

This disclosure relates to the blowout unit.

Conventionally, in an air outlet unit of an air conditioner, a grill that forms an air outlet that is opened in a circular shape centered on an axis, and a radial direction that is disposed in the air outlet and that is centered on the axis are provided. Some have a plurality of louvers (see, for example, Patent Document 1). The plurality of louvers are arranged in the circumferential direction around the axis. Each of the plurality of louvers is configured to advance in the circumferential direction from the one side in the axial direction toward the other side in the axial direction.

Thus, the air flow passing between two louvers adjacent in the circumferential direction among the plurality of louvers can be blown out as a swirl flow centered on the axis. For this reason, it is possible to suppress the swirling flow from diffusing by negative pressure on the central side in the radial direction.

Japanese Patent Laid-Open No. 4-155145

In the air outlet unit of Patent Document 1, a plurality of louvers that are configured to advance in the circumferential direction from one side in the axial direction toward the other side in the axial direction are used, so the air flow is centered on the axis. It can be blown out as a swirling flow.

However, according to the inventor's study, when a lateral vortex is generated around the swirl flow as the swirl flows, the swirl flow is diffused by the lateral vortex and the reach of the swirl flow is shortened. A lateral vortex is an air flow that swirls around an imaginary line that intersects the axis of the swirling flow.

This disclosure is intended to provide a blowout unit that breaks a horizontal vortex and suppresses a reduction in the arrival distance of a swirling flow.

According to one aspect of the present disclosure, the blowout unit that controls the airflow blown from the air conditioning unit includes:
A plurality of wind direction plates formed over the radial direction centered on the axis and arranged at intervals in the circumferential direction centered on the axis;
Between the two wind direction plates adjacent in the circumferential direction among the plurality of wind direction plates, an air passage through which an air flow passes is formed,
When the direction in which the axis extends is defined as the axial direction, each of the plurality of wind direction plates passes through the air passage by being configured to advance from the one side in the axial direction toward the other side in the axial direction. The air flow is swirled around the axis,
The plurality of wind direction plates are formed such that the inclination angle of the radially inner region and the inclination angle of the radially outer region are different from each other.

As described above, a swirling flow swirling around an axis flows as an air flow from an air passage between two wind direction plates adjacent in the circumferential direction among the plurality of wind direction plates. Here, in each of the plurality of wind direction plates, the inclination angle of the radially inner region and the inclination angle of the radially outer region are different from each other. For this reason, the energy that acts on the swirling of the air flow is different between the radially outer side and the radially inner side of the swirling flow.

Therefore, the lateral vortex generated around the swirling flow is broken by the radially outer side of the swirling flow, and the radially inner side of the swirling flow advances in the axial direction. Therefore, it is possible to suppress the arrival distance of the swirling flow from being shortened by the horizontal vortex.

However, the tilt angle, the radially inner region, and the radially outer region are defined as follows.

First, when viewed from one side in the axial direction between the one end in the axial direction and the other end in the axial direction of the wind direction plate, the circumferential direction is from the one end in the axial direction to the other end in the axial direction. An angle formed toward one side is defined as an inclination angle. In other words, the amount of change in the circumferential angle of the other end portion in the axial direction with respect to the circumferential angle of the one end portion in the axial direction is defined as an inclination angle.

The radially inner region is a region located on the radially inner side around the axis in each of the plurality of wind direction plates. The radially outer region is a region located on the radially outer side around the axis in each of the plurality of wind direction plates.

Note that reference numerals with parentheses attached to each component and the like indicate an example of a correspondence relationship between the component and the like and specific components described in the embodiments described later.

It is a figure which shows the whole structure of the vehicle-mounted air conditioner in 1st Embodiment. It is a perspective view of the blowing unit of FIG. It is a side view of the blowing unit of FIG. It is a figure which shows the axial direction other side edge part of the inner side wind direction board part in FIG. 2, and the axial direction other side edge part of an outer side wind direction board part when it sees from an axial direction one side. In 1st Embodiment, it is a figure which shows the comparison of the increase / decrease in the arrival rate of the airflow of a 1st case and a 2nd case. It is a perspective view of the blowing unit of the vehicle-mounted air conditioner in 2nd Embodiment. It is a side view of the blowing unit of FIG. 6 when viewed from one side in the axial direction, the other end in the axial direction of the inner wind direction plate portion in FIG. 6, the other end in the axial direction of the intermediate wind direction plate portion, and the other end in the axial direction of the outer wind direction plate portion. FIG. It is a perspective view of the blowing unit of the vehicle-mounted air conditioner in 3rd Embodiment. It is a figure which shows the axial direction other side edge part of the wind direction board in FIG. 9 at the time of seeing from one axial direction side.

Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. In the following embodiments, parts that are the same or equivalent to each other are given the same reference numerals in the drawings in order to simplify the description.

(First embodiment)
The blowing unit according to the first embodiment will be described with reference to FIGS. As shown in FIG. 1, the blowout unit 50 is connected via a duct 30 to an indoor air conditioning unit 1 that performs air conditioning of the vehicle.

The indoor air-conditioning unit 1 is an air-conditioning unit disposed on the inner side of the instrument panel (that is, the instrument panel) at the foremost part of the vehicle interior. This indoor air-conditioning unit 1 has a case 2 and constitutes an air passage through which air is blown toward the vehicle interior.

The inside / outside air switching box 5 having the inside air introduction port 3 and the outside air introduction port 4 is arranged at the most upstream part of the air passage of the case 2. An inside / outside air switching door 6 is rotatably arranged in the inside / outside air switching box 5.

This inside / outside air switching door 6 is driven by a servo motor (not shown), and switches between an inside air mode for introducing vehicle compartment air from the inside air introduction port 3 and an outside air mode for introducing vehicle compartment outside air from the outside air introduction port 4. .

An electric blower 8 that generates an air flow toward the passenger compartment is disposed on the air downstream side of the inside / outside air switching box 5. The blower 8 includes a centrifugal blower fan 8a and a motor 8b that drives the blower fan 8a. An evaporator 9 that cools the air flowing in the case 2 is disposed on the downstream side of the blower 8. The evaporator 9 is a heat exchanger for cooling that cools the air blown from the blower 8 with a refrigerant, and is one of the elements constituting a known vapor compression refrigeration cycle.

On the other hand, in the indoor air conditioning unit 1, a heater core 15 for heating the air flowing in the case 2 is disposed on the downstream side of the evaporator 9. The heater core 15 is a heating heat exchanger that heats cold air that has passed through the evaporator 9 by using warm water of the vehicle engine as a heat source. A bypass passage 16 is formed on the side of the heater core 15, and the bypass air of the heater core 15 flows through the bypass passage 16.

An air mix door 17 is rotatably disposed between the evaporator 9 and the heater core 15. The air mix door 17 is driven by a servo motor (not shown), and its opening degree can be continuously adjusted.

The ratio of the amount of hot air passing through the heater core 15 and the amount of cold air passing through the bypass passage 16 and bypassing the heater core 15 is adjusted by the opening of the air mix door 17, thereby adjusting the temperature of the air blown into the vehicle interior. Will be.

A defroster outlet 19 for blowing conditioned air toward the front window glass of the vehicle and a face outlet 20 for blowing conditioned air toward the occupant's face are provided at the most downstream portion of the air passage of the case 2. It has been. In addition to this, a foot outlet 21 is provided at the most downstream portion of the air passage of the case 2 for blowing air-conditioned air toward the feet of the passenger.

A defroster door 22, a face door 23, and a foot door 24 are rotatably disposed upstream of the defroster outlet 19, the face outlet 20, and the foot outlet 21. The defroster door 22, the face door 23, and the foot door 24 are opened and closed by a common servo motor via a link mechanism (not shown).

The blowing unit 50 is connected to the face outlet 20 provided in the case 2 via a duct 30. The air whose temperature has been adjusted by the indoor air conditioning unit 1 is blown from the case 2 through the duct 30 to the vehicle interior from the blowout unit 50.

Next, the configuration of the blowout unit 50 will be described with reference to FIGS.

The blowout unit 50 includes a case 51, a partition 52, and wind direction plates 53, 54, 55, and 56 (that is, a plurality of wind direction plates), as shown in part (a) in FIG. The case 51, the partition part 52, and the wind direction plates 53, 54, 55, and 56 are each made of a resin material.

The case 51 is formed in a cylindrical shape centered on the axis S. The partition part 52 is disposed in the case 51. The partition portion 52 is formed in a cylindrical shape centered on the axis S. The partition part 52 divides the inside of the case 51 into an inner air passage and an outer air passage.

The inner air passage is formed on the inner side in the radial direction centering on the axis S with respect to the partition portion 52, and distributes the air flow blown out from the duct 30. The outer air passage is formed on the outer side in the radial direction around the axis S with respect to the partition portion 52.

That is, the outer air passage is formed between the partition portion 52 and the case 51. The outer air passage circulates the air flow blown out from the duct 30.

The wind direction plates 53, 54, 55, and 56 are wind direction plates that are arranged at equal intervals in the circumferential direction around the axis S.

The wind direction plates 53, 54, 55, 56 are formed in a plate shape and are arranged in the case 51. The wind direction plates 53, 54, 55, and 56 are formed from the radial center around the axis S to the radially outer side. The wind direction plates 53, 54, 55, and 56 are formed such that their thickness directions are orthogonal to the axial direction.

Specifically, the wind direction plate 53 is a vane including an inner wind direction plate portion 53a and an outer wind direction plate portion 53b. The inner wind direction plate portion 53 a constitutes a radially inner region that is disposed radially inward with respect to the partition portion 52. The outer wind direction plate portion 53 b constitutes a radially outer region disposed between the case 51 and the partition portion 52.

The inner wind direction plate portion 53a is configured to advance toward the one side in the circumferential direction from the one side in the axial direction toward the other side in the axial direction. The outer wind direction plate portion 53b is configured to advance toward the one side in the circumferential direction from the one side in the axial direction toward the other side in the axial direction. However, the circumferential direction is a circumferential direction around the axis S.

The inclination angle θ2a (that is, the first inclination angle) of the inner wind direction plate portion 53a is smaller than the inclination angle θ1a (that is, the second inclination angle) of the outer wind direction plate portion 53b (θ2a <θ1a).

As viewed from one side in the axial direction between the one end 153a in the axial direction and the other end 153b in the axial direction in the inner wind direction plate portion 53a, the other end 153b in the axial direction from the one end 153a in the axial direction. An angle formed toward one side in the circumferential direction is defined as an inclination angle θ2a. In other words, the amount of change in the circumferential angle of the other end 153b in the axial direction with respect to the circumferential angle of the one end 153a in the axial direction is the inclination angle θ2a.

Of the outer wind direction plate portion 53b, between the one axial end 153c and the other axial end 153d, when viewed from one axial end, the axial one end 153c to the other axial end 153d. An angle formed toward one side in the circumferential direction is defined as an inclination angle θ1a. In other words, the amount of change in the circumferential angle of the other axial end 153d with respect to the circumferential angle of the axial end 153c is the inclination angle θ1a.

Here, an imaginary line passing through one axial end 153a, one axial end 153c, and the axial line S is defined as an X-ray.

The wind direction plate 54 includes an inner wind direction plate portion 54a and an outer wind direction plate portion 54b. The inner wind direction plate portion 54 a constitutes a radially inner region disposed radially inward with respect to the partition portion 52. The outer wind direction plate portion 54 b constitutes a radially outer region arranged between the case 51 and the partition portion 52.

The inner wind direction plate portion 54a is configured to advance toward the one side in the circumferential direction from the one side in the axial direction toward the other side in the axial direction. The outer wind direction plate portion 54b is configured to advance toward the one side in the circumferential direction from the one side in the axial direction toward the other side in the axial direction.

The inclination angle θ2b (that is, the first inclination angle) of the inner wind direction plate portion 54a is smaller than the inclination angle θ1b (that is, the second inclination angle) of the outer wind direction plate portion 54b (θ2b <θ1b).

As viewed from one side in the axial direction between the one end 154a in the axial direction and the other end 154b in the axial direction in the inner wind direction plate portion 54a, the other end 154b in the axial direction from the one end 154a in the axial direction. An angle formed toward one side in the circumferential direction is defined as an inclination angle θ2b. In other words, the amount of change in the circumferential angle of the other axial end 154b with respect to the circumferential angle of the axial one end 154a is the inclination angle θ2b.

Of the outer wind direction plate portion 54b, between the one axial end 154c and the other axial end 154d, when viewed from one axial end, the axial one end 154c to the other axial end 154d. An angle formed toward one side in the circumferential direction is defined as an inclination angle θ1b. In other words, the amount of change in the circumferential angle of the other axial end 154d relative to the circumferential angle of the axial end 154c is the inclination angle θ1b.

Here, an imaginary line passing through the axial one side end 154a, the axial one end 154c, and the axis S is defined as a Y line. The Y line is orthogonal to the X line on the axis S.

The wind direction plate 55 includes an inner wind direction plate portion 55a and an outer wind direction plate portion 55b. The inner wind direction plate portion 55 a constitutes a radially inner region disposed radially inward with respect to the partition portion 52. The outer wind direction plate portion 55 b constitutes a radially outer region disposed between the case 51 and the partition portion 52.

The inner wind direction plate portion 55a is configured to advance toward one side in the circumferential direction from one side in the axial direction toward the other side in the axial direction. The outer wind direction plate portion 55b is configured to advance toward the one side in the circumferential direction from the one side in the axial direction toward the other side in the axial direction.

The inclination angle θ2c (that is, the first inclination angle) of the inner wind direction plate portion 55a is smaller than the inclination angle θ1c (that is, the second inclination angle) of the outer wind direction plate portion 55b (θ2c <θ1c).

As viewed from one side in the axial direction between the one end 155a in the axial direction and the other end 155b in the axial direction of the inner wind direction plate portion 55a, the other end 155b in the axial direction from the one end 155a in the axial direction. An angle formed toward one side in the circumferential direction is defined as an inclination angle θ2c. In other words, the amount of change in the circumferential angle of the other axial end 155b with respect to the circumferential angle of the axial one end 155a is the inclination angle θ2c.

As viewed from one side in the axial direction between the one end 155c in the axial direction and the other end 155d in the axial direction in the outer wind direction plate portion 55b, the other end 155d in the axial direction from the one end 155c in the axial direction. An angle formed toward one side in the circumferential direction is defined as an inclination angle θ1c. In other words, the amount of change in the circumferential angle of the other axial end 155d with respect to the circumferential angle of the axial end 155c is the inclination angle θ1c.

The one end portion 155a in the axial direction and the one end portion 155c in the axial direction are configured so that the above-described X-rays pass therethrough.

The wind direction plate 56 includes an inner wind direction plate portion 56a and an outer wind direction plate portion 56b. The inner wind direction plate portion 56 a constitutes a radially inner region disposed radially inward with respect to the partition portion 52. The outer wind direction plate portion 56 b constitutes a radially outer region arranged between the case 51 and the partition portion 52.

The inner wind direction plate portion 56a is configured to advance toward the one side in the circumferential direction from the one side in the axial direction toward the other side in the axial direction. The outer wind direction plate portion 56b is configured to advance toward the one side in the circumferential direction from the one side in the axial direction toward the other side in the axial direction.

The inclination angle θ2d (that is, the first inclination angle) of the inner wind direction plate portion 56a is smaller than the inclination angle θ1d (that is, the second inclination angle) of the outer wind direction plate portion 56b (θ2d <θ1d).

As viewed from one side in the axial direction between the one end 156a in the axial direction and the other end 156b in the axial direction of the inner wind direction plate portion 56a, the other end 156b in the axial direction from the one end 156a in the axial direction. An angle formed toward one side in the circumferential direction is defined as an inclination angle θ2d. In other words, the amount of change in the circumferential angle of the other axial end 156b with respect to the circumferential angle of the axial one end 156a is the inclination angle θ2d.

Of the outer wind direction plate portion 56b, between the one axial end 156c and the other axial end 156d, when viewed from one axial direction, the axial one end 156c to the other axial end 156d. An angle formed toward one side in the circumferential direction is defined as an inclination angle θ1d. In other words, the amount of change in the circumferential angle of the other axial end 156d with respect to the circumferential angle of the axial one end 156c is the inclination angle θ1d.

The one end 156a in the axial direction and the one end 156c in the axial direction are configured so that the above-described Y line passes through.

Here, the inclination angle θ1a, the inclination angle θ1b, the inclination angle θ1c, and the inclination angle θ1d are the same angle (θ1a = θ1b = θ1c = θ1d). The inclination angle θ2a, the inclination angle θ2b, the inclination angle θ2c, and the inclination angle θ2d are the same angle (θ2a = θ2b = θ2c = θ2d).

The inner wind direction plate portions 53a, 54a, 55a, and 56a of the present embodiment divide the inner air passage into four.

An inner air passage 57a is formed between two inner wind direction plate portions 53a and 54a adjacent to each other in the circumferential direction among the inner wind direction plate portions 53a to 56a. An inner air passage 57b is formed between two inner wind direction plate portions 54a and 55a adjacent to each other in the circumferential direction among the inner wind direction plate portions 53a to 56a.

Among the inner wind direction plate portions 53a to 56a, an inner air passage 57c is formed between two inner wind direction plate portions 55a and 56a adjacent in the circumferential direction. An inner air passage 57d is formed between two inner wind direction plate portions 56a and 53a adjacent to each other in the circumferential direction among the inner wind direction plate portions 53a to 56a.

The outer wind direction plate portions 53b, 54b, 55b, and 56b of the present embodiment divide the outer air passage into four.

An outer air passage 58a is formed between two outer wind direction plate portions 53b and 54b adjacent in the circumferential direction among the outer wind direction plate portions 53b to 56b. An outer air passage 58b is formed between two outer wind direction plate portions 54b and 55b adjacent in the circumferential direction among the outer wind direction plate portions 53b to 56b.

An outer air passage 58c is formed between two outer wind direction plate portions 55b and 56b adjacent in the circumferential direction among the outer wind direction plate portions 53b to 56b. An outer air passage 58d is formed between two outer wind direction plates 56b and 53b adjacent in the circumferential direction among the outer wind direction plates 53b to 56b.

Next, the operation of the blowing unit 50 of this embodiment will be described.

First, the air flow that has passed through the duct 30 flows into the inner air passages 57a, 57b, 57c, and 57d of the blowing unit 50. Then, the air flow flows along the inner wind direction plate portions 53a to 56a, so that it is blown out as a swirl flow that swirls around the axis S. This swirl flow is an air flow that forms a vertical vortex centered on the axis S. The air flow blown out from the inner air passages 57a to 57d in the swirling flow is referred to as an inner swirling flow.

Also, the air flow that has passed through the duct 30 flows to the outer air passages 58a, 58b, 58c, and 58d of the blowing unit 50. Then, the air flow flows along the outer wind direction plate portions 53b to 56b, and is blown out as a swirl flow swirling around the axis S. This swirl flow is an air flow that forms a longitudinal vortex centered on the axis S on the radially outer side with respect to the inner swirl flow. The air flow blown out of the outer air passages 58a to 58d in the swirling flow is referred to as an outer swirling flow.

The outer swirling flow has a larger energy acting on the swirling of the air flow than the inner swirling flow. As the outer swirl flow and the inner swirl flow are blown out from the blowing unit 50, the outer swirl flow destroys the lateral vortex of the air flow generated around the outer swirl flow. In addition to this, it is possible to generate an inner swirl flow radially inward with respect to the outer swirl flow.

As a result, as shown in part (b) of FIG. 2, in the circumferential flow velocity of the air flow blown from the blowing unit 50, the flow velocity slightly outside in the radial direction is the fastest than the radially intermediate portion. The radially intermediate portion side means an intermediate portion between the radially inner side and the radially outer side. The inner side in the radial direction means the inner side in the radial direction around the axis S. The radially outer side means a radially outer side centered on the axis S.

According to this embodiment described above, the blowout unit 50 controls the airflow blown from the indoor air conditioning unit 1 that adjusts the air in the vehicle interior.

The blowout unit 50 includes wind direction plates 53 to 56 that are formed over the radial direction centered on the axis S and arranged at intervals in the circumferential direction centered on the axis S.

Between the two wind direction plates adjacent to each other in the circumferential direction among the wind direction plates 53 to 56, inner air passages 57a to 57d and outer air passages 58a to 58d through which an air flow passes are formed.

When the direction in which the axis S extends is the axis direction, the wind direction plates 53 to 56 are configured to advance in the circumferential direction from one side in the axial direction toward the other side in the axial direction, thereby passing through the air passage. The air flow is swirled.

In the wind direction plates 53 to 56, the inclination angles (θ1a to θ1d) of the outer wind direction plate portions 53b to 56b are larger than the inclination angles (θ2a to θ2d) of the inner wind direction plate portions 53a to 56a, respectively.

Here, the inclination angles (θ2a to θ2d) of the inner wind direction plate portions 53a to 56a are set to be constant over the radial direction. The inclination angles (θ1a to θ1d) of the outer wind direction plate portions 53b to 56b are set to be constant over the radial direction.

As described above, the outer swirl flow is blown out by the outer wind direction plate portions 53b to 56b. An inner swirling flow is blown out by the inner wind direction plate portions 53a to 56a. The outer swirl flow has a larger energy acting on the swirl of the air flow than the inner swirl flow.
Along with this, the outer swirl flow breaks the horizontal vortex of the air flow generated around the outer swirl flow. For this reason, it is suppressed that the inside swirl flow is diffused radially outward. For this reason, it is possible to make the inner swirl flow reach farther.

Therefore, it is possible to provide the blowout unit 50 that suppresses the lateral swirl of the air flow generated around the outer swirl flow from being destroyed by the outer swirl flow and shortening the reach distance of the swirl flow.

Next, in the present embodiment, a comparison between a first case in which the outside turning energy is made larger than the inside turning energy and a second case in which the outside turning energy is made smaller than the inside turning energy will be described with reference to FIG. .
Here, the outer turning energy is energy that acts on the turning of the outer turning flow. The inner turning energy is energy that acts on the turning of the inner turning flow.

The first case in which the outer turning energy is larger than the inner turning energy means that the inclination angle of the outer wind direction plate portions 53b to 56b is larger than the inclination angle of the inner wind direction plate portions 53a to 56a.

The second case in which the outer turning energy is smaller than the inner turning energy means that the inclination angle of the outer wind direction plate portions 53b to 56b is made smaller than the inclination angle of the inner wind direction plate portions 53a to 56a.

The case where the outside turning energy and the inside turning energy are the same is taken as the third case. The vertical axis in FIG. 5 shows the increase / decrease in the air flow arrival rate in the first case with the third case as the reference value (ie, pt) and the increase / decrease in the air flow arrival rate in the second case with the third case as the reference value ( That is, pt).

According to the above, the first case has a longer airflow reach than the third case, and the second case has a longer airflow reach than the third case. Furthermore, the reach distance of the airflow is longer in the first case than in the second case.

(Second Embodiment)
In the first embodiment, the example in which the outer wind direction plate portions 53b to 56b are disposed radially outside the inner wind direction plate portions 53a to 56a has been described. Instead, an example in which intermediate wind direction plate portions 53c to 56c are arranged between the inner wind direction plate portions 53a to 56a and the outer wind direction plate portions 53b to 56b will be described with reference to FIGS.

In the present embodiment, intermediate wind direction plate portions 53c to 56c are added to the blowing unit 50 of the first embodiment. 6, 7, and 8, the same reference numerals as those in FIGS. 2, 3, and 4 indicate the same components.

Therefore, in the present embodiment, the blowout unit 50 will be mainly described, and the description of other configurations will be simplified.

The blowout unit 50 of the present embodiment includes partition portions 52a and 52b instead of the partition portion 52. The partition parts 52 a and 52 b are disposed in the case 51. The partition parts 52a and 52b are formed in a cylindrical shape centered on the axis S.

The radial dimension of the partition part 52a is larger than the radial dimension of the partition part 52b. The partition part 52b is arrange | positioned at the radial inside with respect to the partition part 52a. The partition parts 52a and 52b divide the inside of the case 51 into an inner air passage, an intermediate air passage, and an outer air passage. The intermediate air passage is disposed between the inner air passage and the outer air passage.

The wind direction plate 53 of the present embodiment includes an inner wind direction plate portion 53a, an outer wind direction plate portion 53b, and an intermediate wind direction plate portion 53c.

The inner wind direction plate portion 53a constitutes a radially inner region arranged in the inner air passage, as in the first embodiment. The outer wind direction plate portion 53b constitutes a radially outer region disposed in the outer air passage, as in the first embodiment. The intermediate wind direction plate portion 53c constitutes an intermediate region disposed in the intermediate air passage.

The intermediate wind direction plate portion 53c is disposed between the inner wind direction plate portion 53a and the outer wind direction plate portion 53b. The intermediate wind direction plate portion 53c is configured to advance toward one side in the circumferential direction from one side in the axial direction toward the other side in the axial direction.

In the intermediate wind direction plate portion 53c, between the one axial end portion 153e and the other axial end portion 153f, when viewed from one axial direction side, the axial one end portion 153e extends to the other axial end portion 153f. An angle formed toward one side in the circumferential direction is defined as an inclination angle θ3a. In other words, the amount of change in the circumferential angle of the other end 153f in the axial direction relative to the circumferential angle of the one end 153e in the axial direction is the inclination angle θ3a.

The X-ray is an imaginary line that passes through the axial one side end 153a, the axial one end 153e, the axial one end 153c, and the axial S.

The inclination angle θ3a (that is, the third inclination angle) of the intermediate wind direction plate portion 53c is smaller than the inclination angle θ1a of the outer wind direction plate portion 54b (θ3a <θ1a). The inclination angle θ3a of the intermediate wind direction plate portion 53c is smaller than the inclination angle θ2a of the inner wind direction plate portion 54a (θ3a <θ2a). The inclination angle θ1a of the outer wind direction plate portion 54b is larger than the inclination angle θ2a of the inner wind direction plate portion 54a (θ2a <θ1a).

The wind direction plate 54 includes an inner wind direction plate portion 54a, an outer wind direction plate portion 54b, and an intermediate wind direction plate portion 54c.

The inner wind direction plate portion 54a constitutes a radially inner region arranged in the inner air passage as in the first embodiment. The outer wind direction plate portion 54b constitutes a radially outer region disposed in the outer air passage, as in the first embodiment. The intermediate wind direction plate portion 54c constitutes an intermediate region disposed in the intermediate air passage.

The intermediate wind direction plate portion 54c is disposed between the inner wind direction plate portion 54a and the outer wind direction plate portion 54b. The intermediate wind direction plate portion 54c is configured to advance toward one side in the circumferential direction from one side in the axial direction toward the other side in the axial direction.

The intermediate wind direction plate portion 54c between the one axial end portion 154e and the other axial end portion 154f is viewed from one axial direction end to the other axial end portion 154f in the axial direction. An angle formed toward one side in the circumferential direction is defined as an inclination angle θ3b. In other words, the amount of change in the circumferential angle of the other axial end 154f relative to the circumferential angle of the axial one end 154e is the inclination angle θ3b.

The Y line is an imaginary line that passes through the one axial end 154a, the one axial end 154e, the one axial end 154c, and the axial line S.

The inclination angle θ3b (that is, the third inclination angle) of the intermediate wind direction plate portion 54c is smaller than the inclination angle θ1b of the outer wind direction plate portion 54b (θ3b <θ1b). The inclination angle θ3b of the intermediate wind direction plate portion 54c is smaller than the inclination angle θ2b of the inner wind direction plate portion 54a (θ3b <θ2b). The inclination angle θ1b of the outer wind direction plate portion 54b is larger than the inclination angle θ2b of the inner wind direction plate portion 54a (θ2b <θ1b).

The wind direction plate 55 includes an inner wind direction plate portion 55a, an outer wind direction plate portion 55b, and an intermediate wind direction plate portion 55c.

The inner wind direction plate portion 55a constitutes a radially inner region disposed in the inner air passage as in the first embodiment. The outer wind direction plate portion 55b is disposed in the outer air passage as in the first embodiment. The intermediate wind direction plate portion 55c constitutes an intermediate region disposed in the intermediate air passage.

The intermediate wind direction plate portion 55c is disposed between the inner wind direction plate portion 55a and the outer wind direction plate portion 55b. The intermediate wind direction plate portion 55c is configured to advance toward the one side in the circumferential direction from the one side in the axial direction toward the other side in the axial direction.

The intermediate wind direction plate portion 55c between the one axial end portion 155e and the other axial end portion 155f is viewed from one axial direction end to the other axial end portion 155f in the axial direction. An angle formed toward one side in the circumferential direction is defined as an inclination angle θ3c. In other words, the amount of change in the circumferential angle of the other axial end 155f with respect to the circumferential angle of the axial one end 155e is the inclination angle θ3c.

The X-ray is an imaginary line passing through the one axial end 155a, the one axial end 155e, the one axial end 155c, and the axial line S.

The inclination angle θ3c (that is, the third inclination angle) of the intermediate wind direction plate portion 55c is smaller than the inclination angle θ1c of the outer wind direction plate portion 55b (θ3c <θ1c). The inclination angle θ3c of the intermediate wind direction plate portion 55c is smaller than the inclination angle θ2c of the inner wind direction plate portion 55a (θ3c <θ2c). The inclination angle θ1c of the outer wind direction plate portion 55b is larger than the inclination angle θ2c of the inner wind direction plate portion 55a (θ2c <θ1c).

The wind direction plate 56 includes an inner wind direction plate portion 56a, an outer wind direction plate portion 56b, and an intermediate wind direction plate portion 56c. The inner wind direction plate portion 56a constitutes a radially inner region disposed in the inner air passage, as in the first embodiment. The outer wind direction plate portion 56b constitutes a radially outer region disposed in the outer air passage, as in the first embodiment. The intermediate wind direction plate portion 56c constitutes an intermediate region disposed in the intermediate air passage.

The intermediate wind direction plate portion 56c is disposed between the inner wind direction plate portion 56a and the outer wind direction plate portion 56b. The intermediate wind direction plate portion 56c is configured to advance toward one side in the circumferential direction from one side in the axial direction toward the other side in the axial direction.

The intermediate wind direction plate portion 56c between the one axial end portion 156e and the other axial end portion 156f is viewed from one axial direction side, from the axial one end portion 156e to the other axial end portion 156f. An angle formed toward one side in the circumferential direction is defined as an inclination angle θ3d. In other words, the amount of change in the circumferential angle of the other axial end 156f with respect to the circumferential angle of the axial one end 156e is the inclination angle θ3d.

The Y line is an imaginary line that passes through one axial end 156a, one axial end 156e, and one axial end 156c in the axial direction.

The inclination angle θ3d (that is, the third inclination angle) of the intermediate wind direction plate portion 56c is smaller than the inclination angle θ1d of the outer wind direction plate portion 56b (θ3d <θ1d). The inclination angle θ3d of the intermediate wind direction plate portion 56c is smaller than the inclination angle θ2d of the inner wind direction plate portion 56a (θ3d <θ2d). The inclination angle θ1d of the outer wind direction plate portion 56b is larger than the inclination angle θ2d of the inner wind direction plate portion 56a (θ2d <θ1d).

Here, the inclination angle θ3a, the inclination angle θ3b, the inclination angle θ3c, and the inclination angle θ3d are the same angle (θ3a = θ3b = θ3c = θ3d). The intermediate wind direction plate portions 53c, 54c, 55c, and 56c of the present embodiment divide the intermediate air passage into four.

An intermediate air passage 59a is formed between two inner wind direction plate portions 53a and 54a adjacent to each other in the circumferential direction among the inner wind direction plate portions 53a to 56a. An intermediate air passage 59b is formed between two inner wind direction plate portions 54a and 55a adjacent to each other in the circumferential direction among the inner wind direction plate portions 53a to 56a.

An intermediate air passage 59c is formed between two inner wind direction plate portions 55a and 56a adjacent to each other in the circumferential direction among the inner wind direction plate portions 53a to 56a. An intermediate air passage 59d is formed between two inner wind direction plate portions 56a and 53a adjacent to each other in the circumferential direction among the inner wind direction plate portions 53a to 56a.

Next, the operation of the blowing unit 50 of this embodiment will be described.

First, the air flow that has passed through the duct 30 flows into the inner air passages 57a, 57b, 57c, and 57d of the blowing unit 50. Then, the air flow is blown out as an inner swirl flow that flows along the inner wind direction plate portions 53a to 56a.

Also, the air flow that has passed through the duct 30 flows to the outer air passages 58a, 58b, 58c, and 58d of the blowing unit 50. Then, the air flow is blown out as an outer swirl flow that flows along the outer wind direction plate portions 53b to 56b.

Furthermore, the air flow that has passed through the duct 30 flows into the intermediate air passages 59a, 59b, 59c, and 59d of the blowing unit 50. Then, the air flow is blown out as an intermediate swirl flow that flows along the intermediate wind direction plate portions 53c to 56c. The intermediate swirl flow is a vortex flow of air flow swirling around the axis S.

As the outer swirl flow, the inner swirl flow, and the intermediate swirl flow are blown out from the blowing unit 50, the outer swirl flow destroys the lateral vortex of the air flow generated around the outer swirl flow. In addition, an intermediate swirl flow and an inner swirl flow can be generated radially inward with respect to the outer swirl flow.

At this time, the outer swirl flow has more energy acting on the swirl of the air flow than the intermediate swirl flow and the inner swirl flow. For this reason, the intermediate side swirl flow and the inner swirl flow can be advanced in the axial direction while destroying the horizontal vortex by the outer swirl flow.

As a result, as shown in part (b) of FIG. 6, the flow velocity Pa of the outer swirling flow and the flow velocity Pb on the radial center side are high in the circumferential flow velocity of the air flow blown out from the blowing unit 50. It becomes.

According to the present embodiment described above, in the wind direction plates 53 to 56, the inclination angles of the inner wind direction plate portions 53a to 56a are the inclination angles θ2a to θ2d, and the inclination angles of the outer wind direction plate portions 53b to 56b are the inclination angles θ1a to θ1. It is assumed that θ1d. The inclination angles of the intermediate wind direction plate portions 53c to 56c are assumed to be inclination angles θ3a to θ3d.

The inclination angles θ1a to θ1d and the inclination angles θ2a to θ2d are larger than the inclination angles θ3a to θ3d of the intermediate wind direction plates 53c to 56c. For this reason, the outer swirl flow is blown out by the outer wind direction plate portions 53b to 56b. An inner swirling flow is blown out by the inner wind direction plate portions 53a to 56a. An intermediate swirling flow is blown out by the intermediate wind direction plate portions 53c to 56c.

At this time, the outer swirl flow has more energy acting on the swirl of the air flow than the intermediate swirl flow and the inner swirl flow. Along with this, the outer swirl flow breaks the horizontal vortex of the air flow generated around the outer swirl flow. In addition, an inner swirl flow and an intermediate swirl flow can be generated on the radially inner side with respect to the outer swirl flow.

For this reason, since the lateral vortex is destroyed by the outer swirl flow, the swirl flow is prevented from diffusing radially outward. Accordingly, the inner swirl flow and the intermediate swirl flow can be advanced in the axial direction. For this reason, the inner swirl flow and the intermediate swirl flow can reach farther.

Therefore, it is possible to provide the blowout unit 50 that suppresses the lateral swirl of the air flow generated around the outer swirl flow from being destroyed by the outer swirl flow and shortening the reach distance of the swirl flow.

In the present embodiment, in the wind direction plates 53, 54, 55, 56, the inclination angles θ2a, θ2b, θ2c, θ2d of the inner wind direction plate portions 53a, 54a, 55a, 56a are the same as those of the intermediate wind direction plate portions 53c, 54c, 55c, 56c. The inclination angles are larger than θ3a, θ3b, θ3c, and θ3d.

Therefore, the energy that acts on the swirling of the air flow is greater in the intermediate swirling flow than in the inner swirling flow. The intermediate swirl flow is an air flow that is blown out from the intermediate air passages 59a, 59b, 59c, and 59d in the swirl flow.

For this reason, since the inner swirl flow can be set to a negative pressure rather than the intermediate swirl flow, the swirl flow can be prevented from diffusing from the radially inner side to the radially middle side. Therefore, the distance traveled in the axial direction by the radially inner side of the swirling flow can be extended.

In this embodiment, the inclination angles θ1a, θ1b, θ1c, and θ1d are larger than the inclination angles θ3a, θ3b, θ3c, and θ3d. The inclination angles θ1a, θ1b, θ1c, and θ1d are larger than the inclination angles θ2a, θ2b, θ2c, and θ2d.

For this reason, the intermediate swirling flow has less energy acting on the swirling of the air flow than the inner swirling flow and the outer swirling flow.

Thereby, the intermediate swirl flow can serve as a protective layer that suppresses the reciprocal rotation of the inner swirl flow and the outer swirl flow. Therefore, both the function of the outer swirl flow that eliminates the transverse vortex and the function of the inner swirl flow that negatively advances and advances in the axial direction can be achieved.

(Third embodiment)
In the first embodiment, the example in which the inclination angle of the inner wind direction plates 53a to 56a of the wind direction plates 53 to 56 is a constant angle in the radial direction has been described. However, instead of this, an example in which the wind direction plates 53 to 56 are formed so that the inclination angle gradually increases from the radially inner side to the radially outer side will be described with reference to FIGS. 9 and 10. .

Since the blowout unit 50 is mainly different from the present embodiment and the first embodiment, the blowout unit 50 will be mainly described, and the description of other configurations will be simplified. 9 and 10, the same reference numerals as those in FIGS. 2, 3, and 4 denote the same components.

As shown in part (a) in FIG. 9, the blowout unit 50 of the present embodiment is configured by a case 51 and wind direction plates 53, 54, 55, and 56 without the partition 52 in FIG. 2. .

The wind direction plate 53 is twisted so as to advance toward the one side in the circumferential direction from the one side in the axial direction toward the other side in the axial direction. The wind direction plate 53 is not composed of the inner wind direction plate portion 53a and the outer wind direction plate portion 53b of FIG. 2, but the inclination angle θ4a gradually increases from the radially inner side toward the radially outer side.
In the wind direction plate 53, the inclination angle θ4a (that is, the first inclination angle) of the radially inner region and the inclination angle θ4a (that is, the second inclination angle) of the radially outer region are different. The wind direction plate 53 is formed such that the inclination angle θ4a of the radially inner region and the inclination angle θ4a of the radially outer region gradually increase from the radially inner side toward the radially outer side.

Here, between the axial direction one side edge part 153p and the axial direction other side edge part 153r among the wind direction boards 53, seeing from the axial direction one side, the axial direction one side edge part 153p is an axial direction other side edge part. An angle formed at 153r toward one side in the circumferential direction is defined as an inclination angle θ4a. In other words, the amount of change in the circumferential angle of the other end 153r in the axial direction relative to the circumferential angle of the one end 153p in the axial direction is defined as the inclination angle θ4a.

The wind direction plate 54 is twisted so as to advance toward the one side in the circumferential direction from the one side in the axial direction toward the other side in the axial direction. The wind direction plate 54 is not composed of the inner wind direction plate portion 54a and the outer wind direction plate portion 54b in FIG. 2, but the inclination angle θ4b gradually increases from the radially inner side toward the radially outer side.
In the wind direction plate 54, the inclination angle θ4b (that is, the first inclination angle) of the radially inner region is different from the inclination angle θ4b (that is, the second inclination angle) of the radially outer region. The wind direction plate 54 is formed so that the inclination angle θ4b of the radially inner region and the inclination angle θ4b of the radially outer region gradually increase from the radially inner side toward the radially outer side.

Here, between the axial direction one side edge part 154p and the axial direction other side edge part 154r among the wind direction plates 54, seeing from the axial direction one side, the axial direction one side edge part 154p is the axial direction other side edge part. An angle formed at 154r toward one side in the circumferential direction is defined as an inclination angle θ4b. In other words, the amount of change in the circumferential angle of the other axial end 154r relative to the circumferential angle of the axial end 154p is the inclination angle θ4b.

The wind direction plate 55 is twisted so as to advance toward the one side in the circumferential direction from the one side in the axial direction toward the other side in the axial direction. The wind direction plate 55 is not composed of the inner wind direction plate portion 55a and the outer wind direction plate portion 55b of FIG. 2, but the inclination angle θ4c gradually increases from the radially inner side toward the radially outer side.
In the wind direction plate 55, the inclination angle θ4c (that is, the first inclination angle) of the radially inner region and the inclination angle θ4c (that is, the second inclination angle) of the radially outer region are different. The wind direction plate 55 is formed so that the inclination angle θ4c of the radially inner region and the inclination angle θ4c of the radially outer region gradually increase from the radially inner side toward the radially outer side.

Here, between the axial direction one side edge part 155p and the axial direction other side edge part 155r among the wind direction boards 55, seeing from the axial direction one side, the axial direction one side edge part 155p is an axial direction other side edge part. An angle formed at 155r toward one side in the circumferential direction is defined as an inclination angle θ4c. In other words, the amount of change in the circumferential angle of the other end 155r in the axial direction relative to the circumferential angle of the one end 155p in the axial direction is the inclination angle θ4c.

The wind direction plate 56 is twisted so as to advance toward the one side in the circumferential direction from the one side in the axial direction toward the other side in the axial direction. The wind direction plate 56 is not composed of the inner wind direction plate portion 56a and the outer wind direction plate portion 56b of FIG. 2, but the inclination angle θ4d gradually increases from the radially inner side toward the radially outer side.
In the wind direction plate 56, the inclination angle θ4d (that is, the first inclination angle) of the radially inner region is different from the inclination angle θ4d (that is, the second inclination angle) of the radially outer region. The wind direction plate 56 is formed such that the inclination angle θ4d of the radially inner region and the inclination angle θ4d of the radially outer region gradually increase from the radially inner side toward the radially outer side.

Here, between the axial direction one side edge part 156p and the axial direction other side edge part 156r among the wind direction plates 56, seeing from the axial direction one side, the axial direction one side edge part 156p is the axial direction other side edge part. An angle formed at 156r toward one side in the circumferential direction is defined as an inclination angle θ4d. In other words, the amount of change in the circumferential angle of the other end 156r in the axial direction relative to the circumferential angle of the one end 156p in the axial direction is the inclination angle θ4d.

The wind direction plates 53, 54, 55 and 56 of the present embodiment divide the air passage in the case 51 into four.

Between the two wind direction plates 53 and 54 adjacent to each other in the circumferential direction among the wind direction plates 53 to 56, an air passage 60a is formed. An air passage 60b is formed between two wind direction plates 54 and 55 adjacent to each other in the circumferential direction among the wind direction plates 53 to 56.

An air passage 60c is formed between two wind direction plates 55 and 56 adjacent to each other in the circumferential direction among the wind direction plates 53 to 56. An air passage 60 is formed between two wind direction plates 56 and 53 adjacent to each other in the circumferential direction among the wind direction plates 53 to 56.

Note that, when viewed from one side in the axial direction, an imaginary line passing through the one end 153p in the axial direction, the axis S, and the one end 155p in the axial direction is defined as an X-ray. When viewed from one side in the axial direction, an imaginary line passing through the one end 154p in the axial direction, the axis S, and the one end 156p in the axial direction is defined as a Y line.

Next, the operation of the blowing unit 50 of this embodiment will be described.

First, the air flow that has passed through the duct 30 flows into the air passages 60a, 60b, 60c, and 60d of the blowing unit 50. Then, the air flow is blown out as a swirl flow that flows along the wind direction plates 53 to 56. The energy that acts on the swirling of the air flow is larger at the radially outer side of the swirling flow than at the radially inner side of the swirling flow.

As such a swirl flow is blown out from the blowing unit 50, the radially outer side of the swirl flow breaks the horizontal vortex of the air flow generated around the swirl flow. In addition to this, the radially inner side of the swirl flow advances in the axial direction.

According to the present embodiment described above, the blowing unit 50 includes the case 51 and the wind direction plates 53, 54, 55, and 56. The wind direction plates 53 to 56 are twisted so as to advance toward the one side in the circumferential direction from the one side in the axial direction toward the other side in the axial direction. In the wind direction plates 53 to 56, the inclination angles θ4a to θ4d gradually increase from the radially inner side toward the radially outer side.

This causes the lateral vortex of the air flow generated around the swirling flow to be destroyed on the radially outer side of the swirling flow, and thus the swirling flow is prevented from diffusing radially outward. In addition to this, the radially inner side of the swirl flow advances in the axial direction.

Accordingly, it is possible to provide a blowout unit 50 that suppresses a reduction in the reach of the swirl flow by breaking the lateral vortex of the air flow generated around the outer swirl flow on the radially outer side of the outer swirl flow. Can do.

(Other embodiments)
(1) In the first, second, and third embodiments, the example in which the blowout unit 50 of the present disclosure is applied to a vehicle air conditioner has been described. Instead, a building air conditioner and a home air conditioner are used. The present invention may be applied to a stationary air conditioner such as a mobile air conditioner other than an automobile. Or you may apply the blowing unit 50 of this indication to air blowers other than an air conditioner.
(2) In the first and second embodiments described above, the wind direction plates 53 to 56 have the inclination angles of the outer wind direction plate portions 53b to 56b with respect to the inclination angles of the inner wind direction plate portions 53a to 56a (that is, θ2a to θ2d), respectively. An example in which (that is, θ1a to θ1d) is larger has been described.

However, instead of this, the inclination angle of the outer wind direction plate portions 53b to 56b (that is, θ1a to θ1d) is smaller than the inclination angle of the inner wind direction plate portions 53a to 56a (that is, θ2a to θ2d). 56 may be used.
(3) In the first, second, and third embodiments, the example in which the four wind direction plates 53 to 56 are provided in the blowing unit 50 of the present disclosure has been described. However, instead of this, in the blowing unit 50 of the present disclosure, three or less wind direction plates or five or more wind direction plates may be provided.
(4) In the third embodiment, the example in which the wind direction plates 53 to 55 are formed such that the inclination angle gradually increases from the radially inner side toward the radially outer side has been described. However, instead of this, wind direction plates 53 to 56 formed so that the inclination angle gradually decreases from the radially inner side toward the radially outer side may be used.
(5) In the first, second, and third embodiments, the example in which the indoor air conditioning unit 1 that blows out conditioned air is used as the air conditioning unit of the present disclosure has been described. However, instead of this, an air conditioning unit that blows out an indoor air flow or an outdoor air flow may be used as the air conditioning unit of the present disclosure.
(6) In the first, second, and third embodiments, the example in which the blowing unit 50 is provided on the air outlet side of the duct 30 has been described. However, instead of this, the blowing unit 50 may be disposed in the duct 30 and a louver may be provided on the air outlet side of the duct 30 to adjust the blowing direction of the air flow that has passed through the blowing unit 50.
(7) In the first and second embodiments described above, an example using the inner wind direction plate portions 53a, 54a, 55a, and 56a in which the inclination angles θ2a, θ2b, θ2c, and θ2d are uniformly formed in the radial direction is used. explained.

However, instead of this, inner wind direction plate portions 53a, 54a, 55a, and 56a in which the inclination angles θ2a, θ2b, θ2c, and θ2d increase from the radially inner side toward the radially outer side may be used.

Or in the said 1st, 2nd embodiment, you may use inner wind direction board part 53a, 54a, 55a, 56a which becomes small, so that inclination | tilt angle (theta) 2a, (theta) 2b, (theta) 2c, (theta) 2d goes to radial direction outer side from radial inner side. .
That is, in the said 1st, 2nd embodiment, you may use the inner wind direction board part 53a, 54a, 55a, 56a which is a twisted shape, respectively.
(8) In the first, second, and third embodiments, examples using the outer wind direction plate portions 53b, 54b, 55b, and 56b in which the inclination angles θ1a, θ1b, θ1c, and θ1d are constant in the radial direction. explained.

However, instead of this, outer wind direction plate portions 53b, 54b, 55b, and 56b may be used in which the inclination angles θ1a, θ1b, θ1c, and θ1d decrease from the radially inner side toward the radially outer side.

Or in the said 1st, 2nd embodiment, you may use the outer wind direction board part 53b, 54b, 55b, 56b from which inclination-angle (theta) 1a, (theta) 1b, (theta) 1c, (theta) 1d becomes large as it goes to radial direction outer side from radial inner side. .
That is, in the said 1st, 2nd embodiment, you may use the outer wind direction board part 53b, 54b, 55b, 56b which is the shape which is twisted, respectively.
(9) In the second embodiment, the example using the intermediate wind direction plate portions 53c, 54c, 55c, and 56c in which the inclination angles θ3a, θ3b, θ3c, and θ3d are constant in the radial direction has been described. However, instead of this, intermediate wind direction plate portions 53c, 54c, 55c, and 56c that become smaller as the inclination angles θ3a, θ3b, θ3c, and θ3d go from the radially inner side to the radially outer side may be used.

Or in the said 2nd Embodiment, you may use the intermediate | middle wind direction board part 53c, 54c, 55c, 56c from which inclination-angle (theta) 3a, (theta) 3b, (theta) 3c, (theta) 3d becomes large as it goes to radial direction outer side from radial inner side.
(10) In the first and second embodiments, examples in which the inclination angles θ1a, θ1b, θ1c, and θ1d are the same have been described. However, instead of this, any two or more of the inclination angles θ1a, θ1b, θ1c, and θ1d may be made different.
(11) In the first and second embodiments, examples in which the inclination angles θ2a, θ2b, θ2c, and θ2d are the same have been described. However, instead of this, any two or more of the inclination angles θ2a, θ2b, θ2c, and θ2d may be made different.
(12) In the second embodiment, the example in which the inclination angles θ3a, θ3b, θ3c, and θ3d are the same has been described. However, instead of this, any two or more of the inclination angles θ3a, θ3b, θ3c, and θ3d may be made different.
(13) It should be noted that the present disclosure is not limited to the above-described embodiment, and can be appropriately changed. Further, the above embodiments are not irrelevant to each other, and can be combined as appropriate unless the combination is clearly impossible. In each of the above-described embodiments, it is needless to say that elements constituting the embodiment are not necessarily essential unless explicitly stated as essential and clearly considered essential in principle. Yes. Further, in each of the above embodiments, when numerical values such as the number, numerical value, quantity, range, etc. of the constituent elements of the embodiment are mentioned, it is clearly limited to a specific number when clearly indicated as essential and in principle. The number is not limited to the specific number except where it is. In each of the above-described embodiments, when referring to the shape, positional relationship, etc. of the component, etc., unless specifically stated or in principle limited to a specific shape, positional relationship, etc. It is not limited to the positional relationship or the like.
(Summary) / *
According to the first aspect described in the first to third embodiments and part or all of the other embodiments, the blowing unit is a blowing unit that controls the air flow blown from the air conditioning unit. is there.

The blowout unit includes a plurality of wind direction plates that are formed in a radial direction centered on the axis and are arranged at intervals in the circumferential direction centered on the axis.

Between the two wind direction plates adjacent in the circumferential direction among the plurality of wind direction plates, an air passage through which an air flow passes is formed.

When the direction in which the axial line extends is defined as the axial direction, each of the plurality of wind direction plates passes through the air passage by being configured to advance from the one side in the axial direction toward the other side in the circumferential direction. The air flow to be swirled around the axis is made.

The plurality of wind direction plates are formed so that the first inclination angle of the radially inner region and the second inclination angle of the radially outer region are different from each other.

According to the second aspect, each of the plurality of wind direction plates has a second inclination angle larger than the first inclination angle.

For this reason, the energy that acts on the swirling of the air flow is larger in the swirling flow on the radially outer side than on the radially inner side. For this reason, the lateral vortex generated around the swirling flow can be further extinguished on the radially outer side of the swirling flow. Therefore, it is possible to further prevent the swirling flow from being collapsed by the lateral vortex and spreading the swirling flow radially outward. According to the third aspect, the first tilt angle and the second tilt angle are set in the radial direction. A constant angle is set over the entire area.

According to the fourth aspect, in each of the plurality of wind direction plates, when the inclination angle of the intermediate region between the radially inner region and the radially outer region is the third inclination angle, the first inclination angle and the second inclination angle Each corner is larger than the third tilt angle.

Therefore, by making the first tilt angle of the radially inner region larger than the third tilt angle of the tilt angle of the intermediate region, the radially inner side of the swirl flow than the radially middle side of the swirl flow is The energy acting on the swirling of the air flow is increased.

For this reason, since the radial inner side of the swirling flow can be set to a negative pressure than the radial intermediate side of the swirling flow, it is possible to suppress the swirling flow from diffusing from the radially inner side to the radially intermediate side. it can. Therefore, the distance traveled in the axial direction by the radially inner side of the swirling flow can be extended.

Furthermore, according to the fourth aspect, each of the first inclination angle and the second inclination angle is larger than the third inclination angle. For this reason, the energy that acts on the swirling of the air flow is smaller on the radially intermediate side of the swirling flow than on the radially inner side and the radially outer side of the swirling flow.

Thus, the radially intermediate side of the swirling flow can serve as a protective layer that suppresses the reversal of the radially inner side of the swirling flow and the radially outer side of the swirling flow. Therefore, it is possible to achieve both the radially outer function of the swirling flow that eliminates the transverse vortex and the radially inner function of moving negatively and proceeding in the axial direction.

According to the fifth aspect, each of the plurality of wind direction plates is formed such that the first inclination angle and the second inclination angle gradually increase from the radially inner side toward the radially outer side.

Claims (5)

1. A blowout unit for controlling the airflow blown from the air conditioning unit (1),
   A plurality of wind direction plates (53 to 56) formed in a radial direction centered on the axis (S) and arranged at intervals in a circumferential direction centered on the axis;
   Air passages (57a to 57d, 58a to 58d, 59a to 59d) through which the air flow passes are formed between two wind direction plates adjacent in the circumferential direction among the plurality of wind direction plates.
   When the direction in which the axial line extends is defined as the axial direction, each of the plurality of wind direction plates is configured to advance to one side in the circumferential direction from one side in the axial direction toward the other side in the axial direction. Thus, the air flow passing through the air passage is swirled around the axis,
   The plurality of wind direction plates respectively include a first inclination angle (θ2a, θ2b, θ2c, θ2d) and a radially outer region (53b, 54b, 55b, 56b) of the radially inner region (53a, 54a, 55a, 56a). The blowout unit is formed so that the second inclination angles (θ1a, θ1b, θ1c, θ1d) are different from each other.
2. The blowing unit according to claim 1, wherein each of the plurality of wind direction plates has a larger second inclination angle than the first inclination angle.
3. The blowing unit according to claim 1, wherein the first inclination angle and the second inclination angle are set to be constant over the radial direction.
4. In each of the plurality of wind direction plates, when the inclination angle of the intermediate region (53c, 54c, 55c, 56c) between the radial inner region and the radial outer region is a third inclination angle, the first inclination The blowing unit according to claim 1, wherein each of the corner and the second inclination angle is larger than the third inclination angle.
5. The blow unit according to claim 1, wherein each of the plurality of wind direction plates is formed such that the first inclination angle and the second inclination angle gradually increase from the radially inner side toward the radially outer side.

Images