JP2020138623A - Duct-type blower - Google Patents

Abstract

To provide a duct-type blower capable of efficiently blowing air to a wide range in the cabin of a vehicle.SOLUTION: A duct-type blower includes: a circular cylindrical duct casing 4; a screw member 7 which is inserted in the duct casing 4, and which forms a spiral flow passage 10 in the duct casing 4; and first blower outlets 5 and second blower outlets 6 which are provided in the outer circumference of the duct casing 4, and which blow airflows in the substantially tangential direction of the outer circumference. The first blower outlets 5 and the second blower outlets 6 are continuously but alternately arranged side by side in the lengthwise direction of the outer circumference of the duct casing 4. The blowing directions of the first blower outlets 5 and those of the second blower outlets 6 differ from one another.SELECTED DRAWING: Figure 1

Description

The present invention relates to a register used for air conditioning in an automobile interior, and can be installed in a space-saving manner, particularly on the ceiling of the automobile interior, and can blow air to a relatively wide range such as the upper part of the automobile interior. Regarding a duct type blower that can be used.

As a blower for adjusting the air outlet used for ventilation and air conditioning in the passenger compartment, a screw member is inserted into the cylindrical duct housing to form a spiral wall, and the spiral wall spirals into the duct housing. A duct-type blower having a flow path (ventilation path) is known in Patent Document 1 and the like below.

This duct-type blower is arranged at a relatively long location along the ceiling of the passenger compartment of a one-box car or the like, and is configured to blow air over a wide range of the passenger compartment.

Japanese Unexamined Patent Publication No. 2016-203669

However, in this duct type blower, a slit-shaped outlet is provided on the outer periphery of the duct housing over the entire length of the duct housing or at regular intervals, and air is blown from the long outlet. It is blown out only in a certain direction (approximately tangential direction of the duct).

Therefore, for example, when the duct type blower is arranged along the corner of the ceiling of the passenger compartment, the direction of the air outlet is arranged toward the vicinity of the central portion of the passenger compartment, even if the duct type blower is arranged. Since it is only in a fixed direction, the direction of air blown into the vehicle interior from the outlet of the duct housing during use is substantially a fixed direction.

For this reason, for example, when many occupants stand in the passenger compartment, such as a short-distance shuttle bus, air-conditioned air is blown to some occupants, but air is blown to other occupants. There was a problem that it did not reach.

The present invention has been made in view of the above points, and an object of the present invention is to provide a duct-type blower capable of efficiently blowing air over a wide range in a vehicle interior.

In order to achieve the above object, the duct type blower of the present invention includes a cylindrical duct housing, a screw member inserted into the duct housing and forming a spiral flow path in the duct housing, and the duct housing. In a duct type blower provided on the outer peripheral portion of the body and provided with an outlet for blowing an air flow in a substantially tangential direction of the outer peripheral portion.
The air outlet is composed of a first air outlet and a second air outlet, and the first air outlet and the second air outlet are arranged alternately and continuously in the longitudinal direction of the outer peripheral portion of the duct housing. ,
The blowing direction of the first outlet and the blowing direction of the second outlet are characterized in that they are formed differently.

According to the duct type blower of the present invention, the air flow blown in the duct housing of the duct member travels toward the tip while swirling (rotating) in the spiral flow path, and the direction of rotation (spiral swirling). Since the air is efficiently blown from the air outlet opened in the duct toward the tangential direction, the air flow is not concentrated near the tip of the duct, and can be efficiently blown over a wide range in the longitudinal direction. ..

In addition, for example, in a vehicle such as a bus, when a duct type blower is installed on the ceiling of the passenger compartment, the air for heating and cooling is efficiently sent to a wide range of the ceiling portion to the occupants standing in the passenger compartment. It is possible to improve the cooling and heating effect.

Here, the first outlet and the second outlet may be configured such that the outlet ends of the first outlet and the second outlet are arranged in a row in the longitudinal direction of the duct housing. According to this, in the appearance of the duct type blower, the blower opening ends of the first outlet and the second outlet arranged in a row in the longitudinal direction of the duct housing appear in a row, and the blower is blown. Despite the different directions, the duct type blower can maintain good design.

Further, in the duct type blower, in the duct housing, the first outlet and the outlet for the second outlet are separately formed on the outer peripheral portion of the duct, and the first outlet is formed separately. The second outlet may cover the outside of each outlet and be fixed to the duct housing. According to this, since the duct housing and the air outlet are molded separately, when a duct type blower is manufactured by synthetic resin molding according to various vehicle models, it is applied while using common parts. It is possible to easily manufacture a duct type blower according to the above at low cost.

Further, here, the first air outlet and the second air outlet may be provided with a partition wall inside in parallel with the blowing direction.

Further, here, a plurality of pairs of the first outlet and the second outlet are provided in the duct housing formed in a long length, and the duct casing between the first outlet and the second outlet is provided. A central partition wall is provided in the body, the inside of the duct housing is divided into two via the central partition wall, and the ends of the screw members inserted into the duct housing on both sides are fixed to the central partition wall. It can be configured to blow air from the end side of the duct housing on both sides toward the central partition wall. According to this, a long duct type blower can be easily manufactured, and air flow is introduced from both side ends of the duct type blower at the time of use, so that conditioned air is efficiently blown into the vehicle interior. be able to.

Here, in the duct type blower, the first duct member and the second duct member provided with the duct housing are arranged in parallel at intervals, and the ventilation chamber is the first duct member and the second duct member. The duct housing can be connected to both ends of the duct housing, air introduction portions are provided on the outside of the ventilation chambers on both sides, and an air outlet is provided on the ventilation chamber on the opposite side of the air introduction portion. ..

According to this, when the duct type blower is installed on the ceiling of a passenger compartment such as a bus, the first outlet, the second outlet, and the air outlet are used for the occupants standing in the passenger compartment. Therefore, the air for heating and cooling can be efficiently sent to a wide range of the ceiling portion, and in particular, the air that tends to be stagnant can be flushed to the front and rear side ends of the ceiling portion, and the cooling and heating effect can be improved.

According to the duct type blower of the present invention, it can be easily installed along the ceiling or side wall of the vehicle interior, and the air can be blown to a wide range in the vehicle interior.

It is an overall perspective view of the duct type blower which shows 1st Embodiment of this invention when viewed obliquely upper side from the lower side. A is a front view of one duct member of the register, and B is a right side view of the duct member. It is a right side view of a duct type blower. FIG. 2 is an enlarged sectional view taken along line IV-IV of FIG. It is a VV enlarged sectional view of FIG. It is a VI-VI enlarged sectional view of FIG. It is a bottom view of the duct member. It is a perspective view of the duct member. It is a perspective view of a housing case and a screw member. It is a front view seen from the bottom of the duct type blower. It is a right side view of a duct type blower. It is a perspective view of an air outlet. It is explanatory perspective view which shows the blowing direction when viewed obliquely upper side from the lower side. It is an overall perspective view of the duct type blower which shows 2nd Embodiment when viewed obliquely upper side from the lower side. It is a partial right side view of the duct member. A is a sectional view taken along the line AA of FIG. 15, B is a sectional view taken along the line BB of FIG. 15, and C is a sectional view taken along the line CC of FIG. It is a partial perspective view of the duct member. It is a partial perspective view of a duct housing and a screw member. It is explanatory perspective view which shows the blowing direction when viewed obliquely upper side from the lower side.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 13 show the duct type blower of the first embodiment. This duct-type blower is a duct-type register installed on the ceiling of the vehicle interior, and as shown in FIG. 1, the first duct member 2 and the second duct member 3 are parallel to each other at intervals on both sides. Be placed. The first duct member 2 and the both end portions of the second duct member 3 on both sides are connected to each other so that the ventilation chamber 20 can be hung over, and the duct type blower is formed in a square frame shape as a whole.

The first outlet 5 and the second outlet 6 are alternately arranged on both sides of the first duct member 2 and the second duct member 3 along the axial direction (longitudinal direction) of the duct, and further, both sides are further arranged. Air outlets 22 are provided inside the ventilation chamber 20 so as to eject air inside the ceiling space surrounded by the first duct member 2 and the second duct member 3, respectively, and the passenger stands in the passenger compartment to ride. It is designed to blow air to many occupants. Air inlets 21 connected to the air ducts of the air conditioner are provided on the outside of the ventilation chambers 20 on both sides.

A cylindrical duct housing 4 is provided in each of the first duct member 2 and the second duct member 3 on both sides, and as shown in FIG. 9, the screw member 7 is inserted and fixed in the duct housing 4, and the duct is formed. A spiral flow path 10 is formed in the housing 4. On the outer peripheral portion of the duct housing 4, first outlets 5 and second outlets 6 for blowing air flow in a substantially tangential direction of the cross-sectional circle of the outer peripheral portion are provided alternately adjacent to each other.

The first outlet 5 and the second outlet 6 are formed in the direction in which the swirling air flow created by the spiral flow path 10 is blown into the duct housing 4. The first air outlet 5 and the second air outlet 6 in the first duct member 2 and the second duct member 3 on both sides blow air downward and diagonally inward as shown in FIGS. 1, 5 and 6. A square frame-shaped duct type is used to efficiently blow air from the air outlet 22 of the ventilation chamber 20 to the inside of the register. Further, as shown in FIGS. 11 and 12, the air outlet 22 is formed in a throttle shape in the blowing direction so that the air having a high flow velocity is blown from both the front and rear sides toward the inside of the duct type blowing device. It is formed.

As shown in FIGS. 8 and 9, the screw member 7 is arranged in the duct housing 4 of the first duct member 2 and the second duct member 3, and the spiral flow path 10 is formed in the duct. In the first duct member 2 and the second duct member 3, as shown in FIG. 1, the screw direction of the screw member 7 is set differently. That is, the screw directions of the screw member 7 in the first duct member 2 and the second duct member 3 are opposite to each other so that the rotation of the screw in the feed direction is directed downward from the outside when the duct member is viewed from the front-rear side. Set in the direction.

Further, a central partition wall 9 (FIG. 3) is provided in the central portion of the duct housing 4 of the first duct member 2 and the second duct member 3 on both sides, and is supplied from the ventilation chambers 20 on both the front and rear sides of the duct type blower. The air is stopped at the central partition wall 9, and air can be efficiently blown out from the first outlet 5 and the second outlet 6 of the duct housing 4 before and after the central partition wall 9.

Screw members 7 are inserted into both sides of the central partition wall 9 in the duct housing 4 of the first duct member 2 and the second duct member 3, but the screw directions of the screw members 7 on both sides are opposite to each other. Set. That is, in the screw members 7 on both sides of the central partition wall 9, the duct member on the right side is set in the right-handed screw direction and the duct member on the left side is set in the left-handed screw direction from both front and rear sides toward the center. Further, the central partition wall 9 has a function of fixing and supporting the screw member 7 by fixing the end portions of the screw member 7 on both side surfaces thereof.

The first air outlet 5 and the second air outlet 6 serving as air outlets are attached at the tangential position of the outer peripheral portion of the duct housing 4 and in the tangential direction, that is, in the direction of spiral rotation (rotation in the screw feeding direction). .. Further, as shown in FIGS. 4 to 6, the first outlet 5 and the second outlet 6 are attached with different outlet directions. That is, the second outlet 6 is attached so as to face directly downward in the vertical direction, and the first outlet 5 is attached so as to be inclined inward from the vertical direction directly below, for example, by about 45 °. The inclination angle of the first outlet 5 can be any angle as long as it is an angle up to 90 °.

Further, the first outlet 5 and the second outlet 6 are formed as members separate from the duct housing 4, and are attached to the outer peripheral portion of the duct housing 4 as outlets. As shown in FIGS. 5 and 6, blowout openings 5b and 6b are formed in the duct housing 4 in advance at predetermined positions (outlet positions) on the outer peripheral portion of the duct housing 4.

The lengths of the first outlet 5 and the second outlet 6 (the length in the axial direction of the duct) are formed to be substantially the same as the length of one pitch of the screw member 7, and are also shown in FIGS. 7 to 9. As described above, two partition walls 5c and 6c are provided inside the first outlet 5 and the second outlet 6 in parallel with the blowing direction. As a result, the first outlet 5 and the second outlet 6 are each separated into three passages, and are formed so as to blow air in a predetermined direction from the separated outlets of the three passages. The first outlet 5 and the second outlet 6 are reinforced by two partition walls 5c and 6c, respectively, and air is guided. Further, the lengths of the first outlet 5 and the second outlet 6 are set to be approximately one pitch of the spiral flow path 10, so that the flow rates from the respective outlets are made uniform.

When manufacturing the first duct member 2 and the second duct member 3, for example, the duct housing 4 is formed by blow molding of synthetic resin, the outlet openings 5b and 6b are punched out at predetermined positions, and the duct housing 4 is separately molded as an outlet member. It is manufactured so that the outlet members of the 1st outlet 5 and the 2nd outlet 6 are covered and fixed to the outside of the outlet openings 5b and 6b of the duct housing 4 from the outside. As a result, the duct housing 4 and the air outlet member can be mass-produced as common parts at low cost, and duct-type blowers of various lengths and sizes can be easily and inexpensively manufactured.

In the examples of FIGS. 4 to 6, the blowout opening 5b and the blowout opening 6b are formed at different angles of about 45 ° when viewed from the axial direction of the duct, and are formed with the blowout opening end 5a of the first outlet 5. The outlet opening end 6a of the second outlet 6 is also formed at a difference angle of about 45 °. The angle between the blowout opening end 5a and the blowout opening end 6a can be arbitrarily set according to the length and size of the duct type blower.

Further, as described above, the duct housing 4 of the first duct member 2 and the second duct member 3 is partitioned by the central partition wall 9, and air flow is blown from the ventilation chambers 20 at both ends toward the central partition wall 9. Therefore, in the first outlet 5 and the second outlet 6 of the first duct member 2 and the second duct member 3, the closer to the central partition wall 9 in the central portion from the ventilation chamber 20 side, the more in the spiral flow path 10. Therefore, the air pressure tends to decrease gradually due to the pressure loss.

For this purpose, the blowout opening 5b and the blowout opening 6b of the duct housing 4 can be formed so that the opening area becomes larger toward the central partition wall 9 in the central portion from the ventilation chamber 20 side. As a result, in the spiral flow path 10 of the duct housing 4, the opening area of the air outlet is increased with respect to the air flow in which the pressure gradually decreases due to the pressure loss, so that the amount of air blown due to the pressure decrease can be reduced. Compensate and blow out an air flow of a uniform flow rate in the entire first duct member 2 and the second duct member 3 from the outlet opening end 5a of the first outlet 5 and the outlet opening end 6a of the second outlet 6. Can be done.

The duct type blower having the above configuration is installed on the ceiling of the passenger compartment, and when the register is looked up from below, the first duct member 2 and the second duct member 3 are located in parallel as shown in FIG. , Ventilation chambers 20 are arranged on both sides thereof, and have a square frame shape as a whole, and the registers are arranged inside the ceiling panel.

The first duct member 2 and the second duct member 3 located parallel to both sides have a first outlet 5 whose outlet direction is inclined inward by about 45 ° with respect to the vertical, and a second outlet 6 which faces directly downward. Are alternately arranged along the axial direction. As shown in FIGS. 5 and 6, the first outlet 5 and the second outlet 6 are connected to the ceiling outlet provided on the ceiling panel, and the first outlet 5, the second outlet 6, and the air outlet 22 are connected to each other. Therefore, the air is blown toward the vicinity of the center of the ceiling.

In the first duct member 2 and the second duct member 3 on both sides, the arrangement of the first outlet 5 and the second outlet 6 respectively is different as shown in FIG. That is, in the first duct member 2, the second outlet 6 and the first outlet 5 are arranged in this order from the left end of FIG. 10, and in the second duct member 3, the first outlet 5 and the second outlet 5 are arranged from the left end. They are arranged in the order of 6. As a result, the air flow is not biased throughout the ceiling portion of the vehicle interior, and the air flow is blown. An air conditioning duct of a vehicle air conditioner (not shown) is connected to air inlets 21 on both front and rear sides of the duct type blower.

Next, the operation of the duct type blower having the above configuration will be described. When the air conditioner operates and air is introduced into the ventilation chamber 20 from the air inlets 21 on both sides, the air flow flows from the ventilation chambers 20 on both front and rear sides to the first duct member 2 and the second duct member on both left and right sides. Entering No. 3, each of the spiral flow path 10 in the first duct member 2 and the second duct member 3 advances toward the central portion while turning in opposite directions.

As shown in FIGS. 5 and 6, the air flow swirling while advancing through the spiral flow path 10 is at the first outlet 5 and the second outlet 6, and the spiral flow path 10 to the first outlet 5 and the second 2 Entering the outlet 6, an air flow is blown out from the outlet opening end 5a of the first outlet 5 toward the vicinity of the inner center portion, and from the outlet opening end 6a of the second outlet 6 toward the vicinity directly below. The air flow is blown out. At the same time, an air flow is ejected from the air outlets 22 of the ventilation chambers 20 on both sides toward the central portion of the ceiling.

Centrifugal force acts on the air flow that swirls and flows in the spiral flow path 10 at the time of blowing, so that the air flow flows along the outer peripheral wall of the duct housing 4 and is directed in the tangential direction and the swirling direction. As shown in FIGS.

At this time, as shown in FIG. 13, in the first duct member 2 and the second duct member 3, the outlet opening ends 5a of the first outlet 5 and the outlet openings 6a of the second outlet 6 are arranged alternately. Therefore, an air flow toward the vicinity of the inner central portion and an air flow toward the vicinity directly below are blown out, and at the same time, an air flow is ejected from the air outlets 22 of the ventilation chambers 20 on both sides toward the central portion of the ceiling. As a result, air is blown out over a wide area in the ceiling space, and conditioned air can be blown to many occupants standing in the passenger compartment.

Further, as shown in FIG. 10, the positions of the first duct member 2 and the second duct member 3 on both the left and right sides are different in the longitudinal direction of the first outlet 5 and the second outlet 6. .. That is, when the first duct member 2 and the second duct member 3 are viewed from the right side of FIG. 10, the first duct member 2 has a first outlet 5, a second outlet 6, a first outlet 5, and a second. The air outlets 6 are arranged in this order, and in the second duct member 3, the second air outlet 6, the first air outlet 5, the second air outlet 6, and the first air outlet 5 are arranged in this order. For this reason, in a flat ceiling space, the places where the air is concentrated and the places where the air is insufficient can be reduced as much as possible, and the air-conditioned air can be blown to many occupants standing in the passenger compartment. ..

In particular, when cold air is blown to the ceiling of the passenger compartment, which tends to get hot in the hot season such as summer, many first outlets 5 and second outlets 5 and second outlets provided in the first duct member 2 and the second duct member 3 are provided. Since the cold air is blown from the exit 6 in different positions and directions, even if many occupants stand in the vehicle, the cold air can be blown directly to almost all the occupants to make them feel comfortable. ..

In this way, the air flow blown through the duct housing 4 of the first duct member 2 and the second duct member 3 travels while swirling (rotating) in the spiral flow path 10, and the rotation (swirl swirling) thereof. Air is efficiently blown in the tangential direction from the first outlet 5 and the second outlet 6 that are open in the direction, and at the same time, the air flow is ejected from the air outlets 22 on both sides toward the center of the ceiling, so that the tip of the duct The air flow is not concentrated in the vicinity of the part, and can be efficiently blown over a wide range of the ceiling part. Therefore, in a vehicle such as a bus, when a duct-type blower is installed on the ceiling of the passenger compartment, air for heating and cooling can be efficiently sent to a wide range of the ceiling to the occupants standing in the passenger compartment. It is possible to improve the cooling and heating effect.

14 to 19 show the duct type blower of the second embodiment. In this embodiment, as shown in FIG. 14, the positions of the outlet opening end 35a of the first outlet 35 and the outlet opening end 36a of the second outlet 36 provided on the first duct member 32 and the second duct member 33 are located. , Arranged in a row along the axial direction (longitudinal direction) of the duct. The same parts as those in the above embodiment are designated by the same reference numerals as those in the above embodiment, and the description thereof will be omitted.

In this duct type blower, as shown in FIG. 14, the first duct member 32 and the second duct member 33 are arranged in parallel on both sides at intervals. The first duct member 32 and the second duct member 33 on both sides are connected to each other so that the ventilation chamber 20 can be hung, and the duct type blower is formed in a square frame shape as a whole.

In the first duct member 32 and the second duct member 33 on both sides, the first outlet 35 and the second outlet 36 are alternately arranged along the axial direction (longitudinal direction) of the duct, and further, both sides are further arranged. Air outlets 22 are provided inside the ventilation chamber 20 so as to eject air inside the ceiling space surrounded by the first duct member 32 and the second duct member 33, respectively. Air inlets 21 connected to the air ducts of the air conditioner are provided on the outside of the ventilation chambers 20 on both sides.

A cylindrical duct housing 4 is provided in each of the first duct member 32 and the second duct member 33, and as shown in FIG. 17, the screw member 7 is inserted and fixed in the duct housing 4, and the duct housing 4 is inserted and fixed. A spiral flow path 10 is formed inside. On the outer peripheral portion of the duct housing 4, first outlet 35 and second outlet 36 for blowing air flow in a substantially tangential direction of the cross-sectional circle of the outer peripheral portion are provided alternately adjacent to each other.

The first outlet 35 and the second outlet 36 are provided in the duct housing 4 in the direction in which the swirling air flow created by the spiral flow path 10 is blown out. As shown in FIG. 16, the first outlet 35 and the second outlet 36 of the first duct member 32 and the second duct member 33 on both sides blow air downward and diagonally inward, and the air in the ventilation chamber 20 is blown. A square frame-shaped duct type air is efficiently blown from the spout 22 to the inside of the register.

As shown in FIG. 17, the screw member 7 is arranged in the duct housing 4 of the first duct member 32 and the second duct member 33, and the spiral flow path 10 is formed in the duct. In the duct member 32 and the second duct member 33, the screw directions of the screw member 7 are set to opposite directions. That is, the screw directions of the screw member 7 in the first duct member 32 and the second duct member 33 are set so that the rotation of the screw in the feed direction is directed downward from the outside when the duct member is viewed from the front-rear side. Will be done.

Further, a central partition wall 9 (FIG. 14) is provided in the central portion of the duct housing 4 of the first duct member 32 and the second duct member 33 on both sides, and is supplied from the ventilation chambers 20 on both the front and rear sides of the duct type blower. The air is stopped at the central partition wall 9, and air can be efficiently blown out from the first outlet 35 and the second outlet 36 of the duct housing 4 before and after the central partition wall 9. The central partition wall 9 has the functions of fixing and supporting the screw member 7 by fixing the end portions of the screw member 7 on both side surfaces thereof.

The first outlet 35 and the second outlet 36, which are the air outlets, are attached at the tangential position of the outer peripheral portion of the duct housing 4 in the tangential direction (the direction of rotation of the spiral), and the first outlet 35 and the second outlet 36 are the first. The two outlets 36 are formed and attached so that the outlet directions are different.

That is, as shown in FIG. 16, the second outlet 36 is attached so as to blow air directly downward in the vertical direction, and the first outlet 35 is inclined inward from the vertical direction directly below, for example, by about 45 °. It is formed by bending at a substantially right angle so as to blow air. Further, the outlet opening end 35a of the first outlet 35 and the outlet opening end 36a of the second outlet 36 are formed so as to be aligned in a row along the axial direction of the duct as shown in FIG. Will be done. As a result, while the blowing directions of the first outlet 35 and the second outlet 36 arranged alternately are different, the outlet opening ends 35a and 36a are aligned on one line, thereby forming the ceiling portion in the vehicle interior. The design has been improved to improve the appearance.

Further, the first outlet 35 and the second outlet 36 are formed as members separate from the duct housing 4, and are attached to the outer peripheral portion of the duct housing 4 as outlets. Outlet openings 35b and 36b are formed in the duct housing 4 in advance at predetermined positions (outlet positions) on the outer peripheral portion of the duct housing 4.

The lengths of the first outlet 35 and the second outlet 36 (the length in the axial direction of the duct) are formed to be substantially the same as the length of one pitch of the screw member 7, and as shown in FIG. Two partition walls 35c and 36c are provided inside the first outlet 35 and the second outlet 36 in parallel with the blowing direction. As a result, the first outlet 35 and the second outlet 36 are each separated into three passages, and are formed so as to blow air in a predetermined direction from the separated outlets of the three passages. The first outlet 35 and the second outlet 36 are reinforced by two partition walls 35c and 36c and are guided by air. Further, the lengths of the first outlet 35 and the second outlet 36 are set to be approximately one pitch of the spiral flow path 10, so that the flow rates from the respective outlets are made uniform.

Next, the operation of the duct type blower having the above configuration will be described. When the air conditioner operates and air is introduced into the ventilation chamber 20 from the air inlets 21 on both sides, the air flow flows from the ventilation chambers 20 on both front and rear sides to the first duct member 32 and the second duct member on both left and right sides. Entering 33, the spiral flow path 10 in the first duct member 32 and the second duct member 33 is swirled in opposite directions and advances toward the central portion.

As shown in FIG. 19, air flows swirling while advancing through the spiral flow path 10 are generated from the spiral flow path 10 to the first outlet 35 and the second outlet at the first outlet 35 and the second outlet 36. Entering the outlet 36, an air flow is blown out from the outlet opening end 35a of the first outlet 35 toward the vicinity of the inner central portion, and air is blown out from the outlet opening end 36a of the second outlet 36 toward the vicinity directly below. The stream is blown out. At the same time, an air flow is ejected from the air outlets 22 of the ventilation chambers 20 on both sides toward the central portion of the ceiling.

Centrifugal force acts on the air flow that swirls and flows in the spiral flow path 10 at the time of blowing, so that the air flow flows along the outer peripheral wall of the duct housing 4 and is directed in the tangential direction and the swirling direction. As shown in FIGS. 16 and 19, air is blown at a uniform flow rate from the blowout openings 35b and 36b that open in the direction directly below and diagonally downward.

At this time, as shown in FIG. 19, in the first duct member 32 and the second duct member 33, the outlet opening ends 35a of the first outlet 35 and the outlet openings 36a of the second outlet 36 are alternately arranged. Therefore, an air flow toward the vicinity of the inner central portion and an air flow toward the vicinity directly below are blown out, and at the same time, an air flow is ejected from the air outlets 22 of the ventilation chambers 20 on both sides toward the central portion of the ceiling. As a result, air is blown out over a wide area in the ceiling space, and conditioned air can be blown to many occupants standing in the passenger compartment.

Further, as shown in FIG. 19, the positions of the first duct member 32 and the second duct member 33 on both the left and right sides are different in the longitudinal direction of the first outlet 35 and the second outlet 36. .. That is, when the first duct member 32 and the second duct member 33 are viewed from the right side of FIG. 19, in the first duct member 32, the second outlet 36, the first outlet 35, the second outlet 36, and the first. The outlets 35 are arranged in this order, and in the second duct member 33, the first outlet 35, the second outlet 36, the first outlet 35, and the second outlet 36 are arranged in this order. For this reason, in a flat ceiling space, the places where the air is concentrated and the places where the air is insufficient can be reduced as much as possible, and the air-conditioned air can be blown to many occupants standing in the passenger compartment. ..

In this way, the outlet openings 35a and 36a of the first outlet 35 and the second outlet 36 of the first duct member 32 and the second duct member 33 are aligned in a row in the longitudinal direction of the duct housing 4. Since they are arranged, it is possible to improve the appearance of the blowout opening end that appears on the lower surface of the ceiling panel in the vehicle interior while different the blowing direction, and to enhance the design.

2 1st duct member 3 2nd duct member 4 Duct housing 5 1st outlet 5a outlet opening 5b outlet opening 5c partition 6 2nd outlet 6a outlet opening 6b outlet opening 7 screw member 9 central partition 10 spiral flow path 20 Ventilation chamber 21 Air inlet 22 Air outlet 32 First duct member 33 Second duct member 35 First outlet 35a Outlet opening end 35b Outlet opening 35c Partition 36 Second outlet 36a Outlet opening end

Claims (6)

A cylindrical duct housing, a screw member inserted into the duct housing to form a spiral flow path in the duct housing, and air provided on the outer peripheral portion of the duct housing in a substantially tangential direction of the outer peripheral portion. In a duct-type blower equipped with an outlet that blows out a stream,
The outlet is composed of a first outlet and a second outlet.
The first outlet and the second outlet are arranged continuously and alternately in the longitudinal direction of the outer peripheral portion of the duct housing.
A duct-type blower, characterized in that the blowing direction of the first outlet and the blowing direction of the second outlet are formed differently. The duct-type blower according to claim 1, wherein the first outlet and the second outlet are arranged with their respective outlet ends aligned in a row in the longitudinal direction of the duct housing. In the duct housing, outlet openings for the first outlet and the second outlet are separately formed on the outer peripheral portion, and the separately molded first outlet and the second outlet are the respective outlet openings. The duct type blower according to claim 1 or 2, wherein the duct type blower device covers the outside of the duct housing and is fixed to the duct housing. The duct-type blower according to claim 3, wherein partition walls are provided inside the first outlet and the second outlet in parallel with the blowing direction. A plurality of pairs of the first outlet and the second outlet are provided in the duct housing formed in a long length.
A central partition wall is provided in the duct housing between the first outlet and the second outlet, and the inside of the duct housing is divided into two via the central partition wall.
The ends of the screw members inserted into the duct housings on both sides are fixed to the central partition wall, and are configured to blow air from the end sides of the duct housings on both sides toward the central partition wall. The duct type blower according to claim 1. The first duct member and the second duct member provided with the duct housing are arranged in parallel at intervals, and the ventilation chamber is communicatively connected to both end portions of the first duct member and the second duct member. The duct according to claim 5, wherein air introduction portions are provided outside the ventilation chambers on both sides, and air outlets are provided in the ventilation chambers on the opposite side of the air introduction portions so as to face inward. Mold blower.

Images