Blower facility and building

Abstract

To provide a blower facility which allows a position of an air outlet of wind to be changed, and a building including the blower facility.SOLUTION: A blower facility 10 according to the embodiment includes a telescopic inner cylinder 12 constituting a flow channel for wind, an outer cylinder 20 in which the inner cylinder 12 is contained and which is provided with an air outlet 22 in a peripheral wall for wind flowing through the flow channel, and an operation part 40 operated for extending and contracting the inner cylinder 12. Operating the operation part 40 for extending and contracting the inner cylinder 12 can change a position where wind can blow out through the air outlet 22.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] The present invention relates to a ventilation system, and more particularly to a building in which the above-mentioned ventilation system is used. [Background technology]

[0002] Devices and equipment for supplying air are already in use, and one example is the air blower described in Patent Document 1. The air blower described in Patent Document 1 supplies (introduces) conditioned air from a first room to a second room that is not air-conditioned, thereby air-conditioning the second room. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2004-245495 Summary of the Invention [Problem to be solved by the invention]

[0004] When supplying air into a room in a building, it is required that the position of the air supply port (outlet) be adjustable for reasons such as quickly adjusting the temperature at a specific location in the room to a set temperature and making the temperature in the room uniform.

[0005] The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a ventilation system in which the position of the air outlet can be changed. Another object of the present invention is to provide a building equipped with the above-mentioned ventilation equipment. [Means for solving the problem]

[0006] The above-mentioned problems are solved by the air blowing equipment of the present invention, which is an air blowing equipment comprising an expandable inner tube that forms an air flow path, an outer tube that houses the inner tube and has an outlet on the peripheral wall for air that flows through the flow path, and an operating part that is operated to extend or contract the inner tube, and by operating the operating part to extend or contract the inner tube, the position from which air is blown out through the outlet can be changed. According to the air blowing equipment of the present invention configured as described above, the position from which air is blown out through the outlet of the outer tube can be easily changed by operating the operating part to extend or retract the inner tube.

[0007] The air blowing equipment of the present invention may also include a blower that blows air into the flow path. In this case, the blower may take in air through an air intake port provided in the peripheral wall of the inner cylinder and blow air containing the taken-in air into the flow path. According to the above configuration, air can be efficiently supplied using the blower.

[0008] In the air blowing equipment of the present invention, a plurality of air outlets may be provided on the peripheral wall of the outer cylinder at different positions in the direction of extension and contraction of the inner cylinder. In this case, the inner cylinder may have an outlet for air flowing through the flow path, and the position of the outlet may change in the direction of extension and contraction as the inner cylinder extends and contracts. It is more preferable that the air flowing through the flow path be blown out through the air outlet closest to the outlet among the plurality of air outlets. According to the above configuration, the position where the air is blown out through the outlet of the outer cylinder (that is, the position of the outlet from which the air is actually blown out) can be more easily changed.

[0009] In the air blowing equipment of the present invention, the exhaust port may be provided at a tip end of the peripheral wall of the inner tube in the extension / contraction direction. In this case, it is preferable that the air that has flowed through the flow path is blown out through one of the plurality of outlets that faces the exhaust port. According to the above configuration, the position where the air is blown out through the outlet of the outer cylinder can be changed more easily.

[0010] In the air blowing equipment of the present invention, the operating unit may be disposed outside the outer cylinder. In this case, the air blowing equipment of the present invention may further include a transmission mechanism that connects the operating unit to the peripheral wall of the inner cylinder and transmits a force applied to the operating unit when the operating unit is operated to the inner cylinder. According to the above configuration, the operation for extending and retracting the inner cylinder, in other words, the operation for changing the position of the air outlet, can be performed more easily.

[0011] In the air blowing equipment of the present invention, the tip of the inner cylinder may be cylindrical and rotatable relative to the outer cylinder in the circumferential direction of the inner cylinder. According to the above configuration, it is possible to adjust the direction in which the wind is blown out in the circumferential direction of the inner cylinder, or the strength (wind pressure) of the wind being blown out.

[0012] Furthermore, according to the building of the present invention, the above-mentioned problem is solved by having one of the above-mentioned air blowing equipment and a target room into which air is supplied by the air blowing equipment, and the air blowing equipment supplies air into the target room by blowing air flowing through a flow path formed by an inner tube out of an outlet of an outer tube located within the target room. In the building of the present invention configured as described above, the position from which air is blown out within the target room can be easily changed.

[0013] In addition, in the building of the present invention, the target room may be divided into multiple spaces in the vertical direction, and the ventilation equipment may draw in air from one of the multiple spaces and supply wind containing the drawn-in air to a space other than one of the multiple spaces. According to the above configuration, the temperature difference in the vertical direction inside the target room can be eliminated, and the room temperature can be efficiently made uniform. [Effects of the Invention]

[0014] According to the air blowing equipment and building of the present invention, the position of the air outlet can be changed with a simpler configuration. [Brief explanation of the drawings]

[0015] [Figure 1] 1 is a schematic diagram of a building according to a first embodiment of the present invention. [Figure 2] 1 is a perspective view of a target room to which air is supplied by a ventilation system in a building according to a first embodiment of the present invention. [Figure 3] FIG. 10 is a diagram showing the installation path of the inner cylinder in the target chamber. [Figure 4] FIG. 2 is a diagram showing the configuration of the vicinity of the intake port of the inner cylinder. [Figure 5] FIG. 10 is a view showing the telescopic portion of the inner cylinder. [Figure 6] FIG. [Figure 7] FIG. 2 is a diagram showing an intake port of the inner cylinder and an outlet port of the outer cylinder. [Figure 8] FIG. 10 is a diagram showing the positions of the intake port of the inner cylinder and the outlet port of the outer cylinder, and is a diagram showing the positions when the target chamber is viewed from directly above. [Figure 9] FIG. 2 is a diagram showing an operation unit and a transmission mechanism. [Figure 10] FIG. 10 is a diagram showing the flow of air in a target room. [Figure 11] FIG. 10 is a diagram showing a first modified example of a transmission mechanism. [Figure 12A] FIG. 10 is a perspective view showing a second modified example of the transmission mechanism. [Figure 12B] FIG. 10 is a cross-sectional view showing a second modified example of the transmission mechanism. [Figure 13] FIG. 10 is a diagram showing a configuration in which both ends of the inner cylinder are fixed to the outer cylinder. [Figure 14A] FIG. 10 is a perspective view showing a third modified example of the transmission mechanism. [Figure 14B] FIG. 10 is a cross-sectional view showing a third modified example of the transmission mechanism. [Figure 15] FIGS. 15(a) and 15(b) are diagrams showing variations in the shape and arrangement of the air outlet. [Figure 16] FIGS. 16(a) and 16(b) are diagrams showing variations in the placement position of the air intake port. [Figure 17] FIGS. 17(a) and 17(b) are diagrams showing variations in the arrangement of the outer cylinder and the inner cylinder at the corner of the target chamber. DETAILED DESCRIPTION OF THE INVENTION

[0016] Hereinafter, specific embodiments of the present invention will be described with reference to the accompanying drawings. In the drawings referred to below, the devices are shown somewhat simplified and schematic to make the explanation easier to understand. Furthermore, the size of each device and the spacing between devices shown in the drawings may differ from the actual size. Furthermore, in the following, when describing the position, posture, state, etc. of each device, unless otherwise specified, the description will be of the position, posture, state, etc. when the device is in use. In addition, in this specification, the meanings of the terms "same," "identical," and "equal" may include a range of error generally accepted in the technical field to which the present invention belongs.

[0017] <<About one embodiment of the present invention>> The building of the present invention is a structure (architecture) having one or more rooms that can be used by people inside. Examples of the building of the present invention include buildings for various purposes such as houses, shops, offices, commercial facilities such as movie theaters and department stores, public facilities such as hospitals and schools, factories, and buildings.

[0018] In one embodiment of the present invention (hereinafter referred to as the present embodiment), a description will be given assuming a house H shown in Fig. 1 as an example of a building of the present invention. The house H may be a detached house or a single dwelling unit in a multi-family housing complex such as a condominium or apartment. Naturally, the present invention can also be applied to buildings other than houses.

[0019] The house H has one room (hereinafter referred to as the target room R) that can be used by the occupants of the house H. The target room R is a space partitioned by a ceiling, a floor, and side walls (interior walls). Air is supplied (blows) into the target room R by a ventilation system according to this embodiment (hereinafter referred to as the ventilation system 10). That is, the ventilation system 10 is used inside the house H (indoors).

[0020] The configuration of the target room R will be described with reference to Fig. 2. The target room R is, for example, a rectangular space in a plan view, and is equipped with air conditioning equipment (not shown), such as an air conditioner. Here, the target room R may be an entire room in the house H, or a space of a predetermined size provided within that room.

[0021] 2, the target room R is divided vertically into multiple spaces, two upper and lower spaces A1 and A2 in FIG. 2, by partition materials D. The partition materials D are made of, for example, plates, tatami mats, cloth sheets, nets, etc., and have the same planar size (size when viewed from directly above) as the target room R. When the material constituting the partition material D is a sheet or net, etc., the material may have an appropriate degree of resilience.

[0022] The partition material D is positioned at a vertical distance from the floor of the target room R that is approximately half the height of the target room R, in other words, it forms the floor of the mezzanine of the target room R. Users of the target room R (i.e., residents of the house H) can use each of the two upper and lower spaces A1 and A2. The method and means for fixing the partition material D in the target room R are not particularly limited, but it is preferable to use known methods and means that do not require tools and can fix the partition material D to pillars, walls, etc. of the target room R.

[0023] The air blowing equipment 10 then draws in air from one of the two upper and lower spaces A1 and A2, and supplies wind containing the drawn-in air to the other space (i.e., a space other than the one space) (see FIG. 10). For example, in winter, warm air tends to accumulate in the upper space A1, so the air blowing equipment 10 draws in air from the upper space A1 and supplies (blows) wind containing the drawn-in air to the lower space A2, which has a lower temperature. This makes it possible to equalize the temperature in each part of the target room R, or in other words, eliminates the temperature difference between the two upper and lower spaces A1 and A2. In the above configuration, if the position of the air intake is changed from the upper space A1 to the lower space A2, air can be drawn into the lower space A2 where cool air tends to accumulate in the summer, and the wind containing the drawn air can be supplied to the upper space A1.

[0024] The configuration of the air blowing equipment 10 will be described in detail with reference to Figures 3 to 10. The air blowing equipment 10 has a blower 30 shown in Figure 3, an inner cylinder 12 shown in Figures 3 to 5, an outer cylinder 20 shown in Figure 6 etc., and an operating unit 40 and a transmission mechanism 42 shown in Figure 9. Each of these components will be described below.

[0025] (inner cylinder) The inner tube 12 is a member that forms a flow path for the air supplied by the air blowing equipment 10, and in this embodiment is a cylinder, for example, a hose or a pipe. The inner tube 12 is laid within the target room R, and as shown in FIG. 3, extends over a wide area within the target room R, with one end of the inner tube 12 located in the upper space A1 and the other end located in the lower space A2. As shown in FIG. 3, the inner tube 12 is arranged along the inner wall surface of the target room R, and a portion of it is arranged at a corner of the target room R and curved in an arc. In this case, the inner tube 12 is preferably arranged along at least two surfaces (two adjacent surfaces) of the four side walls surrounding the target room R, and preferably along three surfaces.

[0026] Additionally, an air intake port 14 and an exhaust port 16 are provided in the peripheral wall 12a of the inner cylinder 12. As shown in Fig. 4, the air intake port 14 is provided in the peripheral wall 12a on the end side of the inner cylinder 12, which is the fixed end, and air outside the inner cylinder 12 is sucked into the interior of the inner cylinder 12 through the air intake port 14. The air intake port 14 may be a circular, elliptical, or rectangular hole, a long hole, a slit-like hole, or a mesh-like hole, or may be composed of a plurality of relatively small holes.

[0027] As shown in Fig. 7, the exhaust port 16 is provided in the peripheral wall 12a at the tip of the inner tube 12, which is the free end, and the air that flows inside the inner tube 12, i.e., inside the flow path, is exhausted to the outside of the inner tube 12 through the exhaust port 16. The exhaust port 16 may be a circular, elliptical, or rectangular hole, a long hole, a slit-like hole, or a mesh-like hole, or may be composed of a plurality of relatively small holes. Furthermore, if the tip of the inner tube 12 is an open end, the tip opening of the inner tube 12 may be used as the exhaust port 16.

[0028] 5, the majority of the inner cylinder 12 is housed within the outer cylinder 20. Meanwhile, the end portion of the inner cylinder 12, where the air intake 14 is provided, protrudes from one end of the outer cylinder 20 to the outside, and is fixed in a state of being engaged (hooked) to one end of the outer cylinder 20 as an end locking portion 12b. The shape of the end locking portion 12b is not particularly limited as long as it can be engaged with one end of the outer cylinder 20, and may be, for example, a three-way elbow shape as shown in FIG. 4. Alternatively, the end locking portion 12b may be a protrusion, claw, or hook portion that can be hooked onto a recess or notch formed in one end of the outer cylinder 20.

[0029] 5, the inner tube 12 according to this embodiment is configured to be expandable in its extension direction, and specifically has a bellows portion 12c as an expandable portion. That is, the inner tube 12 expands when the bellows portion 12c deforms so that the spacing between the protrusions and recesses of the bellows portion 12c (more specifically, the spacing between the mountain folds and the valley folds) increases, whereas the inner tube 12 contracts when the bellows portion 12c deforms so that the spacing between the protrusions and recesses decreases. As can be seen from FIG. 5, when the inner tube 12 expands and contracts, the positions of the tip of the inner tube 12 (more specifically, the tip of the peripheral wall 12a in the expansion and contraction direction of the inner tube 12) and the discharge port 16 provided at the tip change in the expansion and contraction direction of the inner tube 12.

[0030] The amount of expansion and contraction of the inner tube 12 (in other words, the range of expansion and contraction) is not particularly limited, but if the total length of the inner tube 12 when the bellows portion 12c is at its most contracted is X and the total length of the inner tube 12 when the bellows portion 12c is at its most expanded is Y, then it is preferable that Y / X satisfy the following relational expression. 2≦Y / X≦10 Furthermore, there is no particular limitation on the range of movement of the exhaust port 16 due to the expansion and contraction of the inner cylinder 12. For example, the exhaust port 16 may move between a position about 1 m away from the intake port 14 and a position about 4 m to 7 m away from the intake port 14.

[0031] (Blower) The blower 30 is a device that blows air into the flow path formed by the inner cylinder 12. More specifically, it draws air through the air intake 14 provided in the peripheral wall 12a of the inner cylinder 12 and causes the air containing the drawn air to flow into the flow path. In this embodiment, the blower 30 is disposed inside the inner cylinder 12, more specifically near the air intake 14, as shown in FIG. 4. The blower 30 may be, for example, a small electric fan or a manually operated air pump such as an air pump.

[0032] (Outer cylinder) The outer cylinder 20 is a tubular body in which the inner cylinder 12 is housed, and in this embodiment is a cylinder, made of, for example, a resin or metal pipe. The inner diameter of the outer cylinder 20 is slightly larger than the inner diameter of the inner cylinder 12 (strictly speaking, the inner diameter of the mountain-folded portion of the bellows portion 12c). In other words, when the inner cylinder 12 is housed inside the outer cylinder 20, a slight gap is formed between the inner circumferential surface of the outer cylinder 20 and the outer circumferential surface of the inner cylinder 12. However, this is not limited thereto, and the inner cylinder 12 may be press-fitted (inserted) into the outer cylinder 20. Furthermore, the inner cylinder 12 may be housed in the outer cylinder 20 in a state in which it can be removed from the outer cylinder 20. In this case, the inner cylinder 12 can be housed in the outer cylinder 20 by changing the orientation of the inner cylinder 12 so as to swap the position of the tip of the inner cylinder 12 where the discharge port 16 is provided, thereby making it possible to switch between the two upper and lower spaces A1 and A2 in which the tip is located.

[0033] The outer cylinder 20 is disposed in the target chamber R along the installation path of the inner cylinder 12, and is supported by a support column (not shown) or a support cover fixed to the wall of the target chamber R. There are no particular limitations on the installation route and length of the outer cylinder 20. The outer cylinder 20 may be provided so as to accommodate the inner cylinder 12 over the entire installation range of the inner cylinder 12, or may be provided intermittently so as to accommodate the inner cylinder 12 in part of the installation range of the inner cylinder 12. The outer cylinder 20 is not limited to a cylindrical shape as long as it has a tubular shape, and may be a rectangular tube or another tubular shape (for example, a tube with a star-shaped cross section).

[0034] As described above, the end locking portion 12b of the inner cylinder 12 is locked and fixed to one end of the outer cylinder 20. In other words, the end of the inner cylinder 12 facing the end locking portion 12b forms a fixed end. On the other hand, the end of the inner cylinder 12 opposite the end locking portion 12b, i.e., the tip, forms a free end, as shown in FIG. 7.

[0035] As shown in FIG. 6, an air outlet 22 is provided on the peripheral wall 20a of the outer cylinder 20. The air flowing through the flow path formed by the inner cylinder 12 is discharged to the outside of the inner cylinder 12 through the outlet 16, and then blown out of the outer cylinder 20 from the outlet 22 and supplied into the target chamber R. The outlet 22 may be a circular, elliptical, or rectangular hole, an elongated hole, a slit-like hole, or a mesh-like hole, or may be composed of a plurality of relatively small holes. The outlet 22 may be a hole extending long in the circumferential direction of the outer cylinder 20, or a hole extending long in the extension direction (axial direction, thrust direction) of the outer cylinder 20.

[0036] Furthermore, when the outer tube 20 accommodates the portion of the inner tube 12 where the air intake port 14 is provided, it is preferable that an air intake port (not shown) on the outer tube side is also provided in the portion of the peripheral wall 20a of the outer tube 20 corresponding to the air intake port 14.

[0037] In this embodiment, a plurality of air outlets 22 are provided in the peripheral wall 20a of the outer cylinder 20 at different positions in the extending direction of the outer cylinder 20 (in other words, the expanding and contracting direction of the inner cylinder 12). Each of the plurality of air outlets 22 is provided at a position away from the air intake 14 of the inner cylinder 12, and is, for example, arranged in one of the two spaces A1 and A2, different from the space in which the air intake 14 is arranged.

[0038] Furthermore, when the target room R is viewed from directly above, some of the multiple air outlets 22 are provided adjacent to one of the side walls (hereinafter referred to as the first side wall) surrounding the target room R, as shown in FIG. 8. The remaining air outlets 22 are provided adjacent to the side wall adjacent to the first side wall (hereinafter referred to as the second side wall) and the side wall adjacent to the second side wall (hereinafter referred to as the third side wall). In this configuration, it is preferable that the air outlets 22 are respectively disposed near the corner formed by the first side wall and the second side wall, and near the corner formed by the second side wall and the third side wall. In this case, air can be blown out from the corners of the target room R.

[0039] As shown in Fig. 8, the inner cylinder 12 is accommodated in the outer cylinder 20 in an expandable and contractible state. Furthermore, as described above, when the tip of the inner cylinder 12 moves due to the expansion and contraction of the inner cylinder 12, the outlet 16 provided at the tip is displaced. In other words, of the multiple outlets 22, the outlet 22 closest to the outlet 16, more specifically the outlet 22 facing the outlet 16, is switched. This changes the position of the outlet 22 from which the wind is blown out. In other words, the wind that has flowed inside the inner cylinder 12 (flow path) is blown out through the outlet 22 closest to the outlet 16, more specifically the outlet 22 facing the outlet 16, of the multiple outlets 22.

[0040] Each of the air outlets 22 has the same shape as the exhaust outlet 16, is smaller in size than the exhaust outlet 16, and is preferably provided at the same position as the exhaust outlet 16 in the circumferential direction of the inner cylinder 12 and the outer cylinder 20. In this case, the air outlet 22 facing the exhaust outlet 16 is positioned to overlap with the exhaust outlet 16. In this state, by shifting the position of the exhaust outlet 16 and changing the degree of overlap between the exhaust outlet 16 and the air outlet 22, the volume (wind speed) and wind pressure of the air blown out from the air outlet 22 can be adjusted.

[0041] (Operating unit and transmission mechanism) The operating unit 40 is a part that is operated to extend or retract the inner tube 12, and as shown in Fig. 9, is arranged on the outside of the peripheral wall 20a of the outer tube 20, and is operated by an operator from outside the outer tube 20. In this embodiment, the operating unit 40 is formed, for example, of a knob or a protrusion, and is operated so as to slide along the extension direction of the inner tube 12 (i.e., the extension and retraction direction of the inner tube 12).

[0042] The transmission mechanism 42 connects the operating unit 40 and the peripheral wall 12a of the inner cylinder 12, and transmits a force (external force) applied to the operating unit 40 when the operating unit 40 is operated to the inner cylinder 12. The transmission mechanism 42 is fixed to the peripheral wall 12a of the inner cylinder 12, and moves in conjunction with the operation of the operating unit 40. More specifically, in this embodiment, the transmission mechanism 42 is made of a rod body integrated with the operating unit 40. As shown in FIG. 9 , this rod body enters the outer cylinder 20 through a slit 20b provided in the peripheral wall 20a of the outer cylinder 20, and is fixed to the peripheral wall 12a of the inner cylinder 12 at the end opposite the operating unit 40.

[0043] When the operating part 40 is operated to slide in the extending direction of the inner tube 12, the rod body of the transmission mechanism 42 slides integrally with the operating part 40. This transmits the force applied to the operating part 40, i.e., the force acting in the extending direction of the inner tube 12, to the inner tube 12, causing the inner tube 12 to expand and contract in the direction in which the operating part 40 moves.

[0044] With the configuration described above, the air blowing equipment 10 supplies air into the target room R by blowing out the air flowing through the flow path formed by the inner cylinder 12 from the outlet 22 of the outer cylinder 20 arranged in the target room R. More specifically, as shown in FIG. 10 , air from one of two spaces A1 and A2 provided in the target room R, where the air intake 14 is arranged, is sucked in through the air intake 14, and the blower 30 compresses and delivers the sucked air. This causes air to flow through the flow path formed by the inner cylinder 12, and as shown in FIG. 10 , the air is finally discharged from the inner cylinder 12 through the outlet 16 of the inner cylinder 12. The discharged air is blown out from the outlet 22 arranged in the other of the two spaces A1 and A2 (hereinafter referred to as the air destination space).

[0045] Furthermore, in the above configuration, by operating the operating unit 40 to extend or retract the inner cylinder 12, the position from which air is blown out through the air outlet 22, i.e., the air outlet 22 from which air is actually blown out among the multiple air outlets 22, can be changed. This makes it possible to change the position of the air outlet in the air destination space of the target room R with a simpler configuration. As a result, it is possible to efficiently (concentratedly) adjust the temperature and humidity at a predetermined location in the air destination space, and to efficiently and quickly equalize the temperature in each part of the space. In particular, in this embodiment, it is possible to eliminate the temperature difference between the two upper and lower spaces A1 and A2 in the target room R. Furthermore, as a result of changing the position of the air outlet, it is possible to effectively disperse odors near the outlet.

[0046] <<Other embodiments>> While one embodiment of the air blowing equipment and a building equipped with the air blowing equipment of the present invention has been described above, the above embodiment is merely an example for facilitating understanding of the present invention and does not limit the present invention. In other words, the present invention may be modified or improved without departing from the spirit of the present invention. Furthermore, the present invention naturally includes equivalents thereof.

[0047] In the above embodiment, the operating unit 40, which is operated to extend or retract the inner tube 12, is a knob or protrusion that slides in the direction of extension or retraction of the inner tube 12 when operated. In the above embodiment, the transmission mechanism 42 is configured by a rod that connects the operating unit 40 to the peripheral wall 12a of the inner tube 12 and slides integrally with the operating unit 40 when the operating unit 40 is operated. However, the operating unit 40 and the transmission mechanism 42 may have other configurations. For example, as shown in FIG. 11 , the operating unit 40 may be a dial, and the transmission mechanism 42 may be configured by a pinion 44 attached to the tip of a pin extending from the dial, and a rack 46 fixed to the outer circumferential surface of the inner tube 12 and meshing with the pinion. In such a configuration, rotating the operating unit 40 rotates the pinion, and the rotational force is transmitted to the rack, causing the inner tube 12 to move in its extension direction (i.e., the direction of extension or retraction of the inner tube 12) and retract. That is, the transmission mechanism 42 having the configuration shown in Figure 11 converts the force (rotational force) applied to the operating unit 40, which is a dial, into a force acting in the extension direction of the inner tube 12 and transmits it to the inner tube 12 using a pinion rack mechanism. As a variation of the above configuration, the concave-convex structure of the bellows portion 12c provided on the inner tube 12 may be used as a rack, and the pinion 44 may mesh with the concave-convex structure, thereby utilizing a transmission mechanism 42 that is approximately the same as the above configuration.

[0048] 12A and 12B, the operating unit 40 may be a rotatable dial, and the transmission mechanism 42 may be a ball screw extending from the dial and fixed to the tip (free end) of the inner tube 12. In this case, the tip of the inner tube 12 is cylindrical and made of a separate member from the rest of the inner tube 12, specifically, a bag-shaped cap body, the top of which is connected to the tip of the ball screw. In this configuration, by pushing or pulling the dial, which is the operating unit 40, along the extension direction of the inner tube 12, the force is transmitted to the inner tube 12, causing the inner tube 12 to expand or contract. 12A and 12B, the tip of the inner tube 12 (hereinafter, referred to as the movable tip 48) is rotatable relative to the outer tube 20 in the circumferential direction of the inner tube 12. Therefore, when the dial is rotated around the central axis of the inner tube 12 as the rotation axis, the rotational force causes the movable tip 48 of the inner tube 12 to rotate in the circumferential direction. Here, as shown in FIGS. 12A and 12B, the circumferential wall of the movable tip 48 is provided with an exhaust port 16. Therefore, by rotating the movable tip 48, the position of the exhaust port 16 can be changed in the circumferential direction of the inner tube 12. This makes it possible to change the direction of the airflow discharged from the exhaust port 16 to the outside of the inner tube 12. Therefore, for example, if the outer tube 20 is provided with a slit-shaped hole elongated in the circumferential direction of the outer tube 20 as the air outlet 22 opposite the exhaust port 16, the direction (wind direction) of the airflow blown out of the air outlet 22 can be adjusted by rotating the movable tip 48. Moreover, by changing the degree of overlap between the outlet 16 and the outlet 22, the strength of the air blown out (wind pressure) can also be adjusted.

[0049] In the above embodiment, one end of the inner tube 12 is a free end, and the other end is an end locking portion 12b that is locked and fixed to the outer tube 20. However, this is not limited to this, and as shown in Fig. 13, both ends of the inner tube 12 may be fixed ends, more specifically, end locking portions 12b that are locked and fixed to the outer tube 20. In this case, as shown in Fig. 13, it is preferable that the discharge port 16 is provided in the peripheral wall 12a at a midpoint in the extension direction of the inner tube 12 (a position other than the end). 14A and 14B, when both ends of the inner tube 12 are fixed, the operating unit 40 may be a rotating lever, and the transmission mechanism 42 may be a reel 52 for winding up the wire connected to the rotating lever, and a wire 54 wound around the reel 52. The wire 54 has an endless shape and is supported so as to be movable (rotatable) in its extension direction. Furthermore, as shown in FIG. 14A, the wire 54 is fixed to the peripheral wall 12a of the inner tube 12 at a midpoint. With this configuration, when the operating unit 40, which is a rotating lever, is rotated, the rotational force is converted into a force acting in the extension direction of the inner tube 12 by the movement of the wire 54 and transmitted to the inner tube 12, thereby expanding or contracting the inner tube 12. Furthermore, by switching the direction of rotation of the operating unit 40, the inner tube 12 can be switched between extension and contraction. The operating unit 40 consisting of a rotary lever and the transmission mechanism 42 including the reel 52 and wire 54 can also be used in a configuration in which one end of the inner tube 12 is a free end and the other end forms the end locking portion 12b and is fixed to the outer tube 20. In this case, the inner tube 12 can be extended by winding up the wire 54 by the reel 52. On the other hand, if a spring or other spring that biases the inner tube 12 in a direction to contract it is connected to the inner tube 12, the inner tube 12 can be contracted by unwinding the wire 54 wound around the reel 52. The wire 54 may be replaced with a steel wire, a rope, a chain, or the like.

[0050] Furthermore, in the above embodiment, a cylinder having a bellows portion 12c was described as an example of an inner tube 12 configured to be expandable and contractible, but other examples of an expandable inner tube 12 are also possible, and for example, a cylinder made of an expandable material may be used as the inner tube 12.

[0051] In the above embodiment, the peripheral wall 20a of the outer cylinder 20 is provided with a plurality of outlets 22 spaced apart from one another at different positions in the extension direction of the outer cylinder 20 (i.e., the direction of expansion and contraction of the inner cylinder 12). However, this is not limited to this, and the peripheral wall 20a of the outer cylinder 20 may be provided with slit-shaped outlets 22 extending along the extension direction of the outer cylinder 20. In this case, the slit-shaped outlets 22 may be holes extending continuously in a straight line in the extension direction of the outer cylinder 20, or may be provided intermittently at regular intervals or irregularly as shown in FIG. 15(a). Furthermore, as shown in FIGS. 15(a) and 15(b), the peripheral wall 20a of the outer cylinder 20 may be provided with outlets 22 at a plurality of positions in the circumferential direction of the outer cylinder 20.

[0052] In the above embodiment, as shown in Fig. 4, the intake port 14 is provided in the peripheral wall 12a of the general portion of the inner tube 12, i.e., the portion other than the end locking portion 12b. However, this is not limited to this, and the intake port 14 may be provided in the end locking portion 12b, as shown in Fig. 16(a). Furthermore, as shown in Fig. 16(b), if the end of the end locking portion 12b is an open end, the end opening may be used as the intake port 14.

[0053] Furthermore, in the above embodiment, each of the inner tube 12 and the outer tube 20 is laid so as to pass through the corner of the target chamber R, but the portion of each tube that is positioned at the corner of the target chamber R may be curved in an arc shape as shown in (a) of Figure 17. Alternatively, as shown in FIG. 17(b), the outer cylinder 20 may be bent in an L-shape along a corner of the target chamber R. Also, as shown in the same figure, the inner cylinder 12 may pass through a first through-hole provided in the peripheral wall 20a of the outer cylinder 20 near the corner, be exposed to the outside of the outer cylinder 20, bend in an arc, and then re-enter the outer cylinder 20 through a second through-hole provided in the peripheral wall 20a. In this case, the arc-shaped portion of the inner cylinder 12 is exposed outside the outer cylinder 20, and this portion may be covered with a resin protective cover. Note that the method of attaching the protective cover to the inner cylinder 12 is not particularly limited, and may involve hooking a claw or a hook into a recess, or may be fixed with a fastener such as a screw, or may be joined with adhesive tape, an adhesive, or the like.

[0054] In addition, in the above embodiment, the operation unit 40 is operated manually, but this is not limiting, and the operation unit 40 may be automatically operated by an electrically powered device such as a motor or an actuator. In this case, the operation unit 40 may be remotely controlled by a controller that wirelessly controls the electrically powered device.

[0055] Although the above embodiment describes a fan used inside a building, the fan of the present invention can also be used in outdoor spaces. In such cases, a portable power supply may be used as the power source for the fan. The outdoor space in which the fan of the present invention can be used may be a completely enclosed space, such as a tent, that is separated from the outside by a curtain, fabric, or the like. [Explanation of symbols]

[0056] 10. Ventilation equipment 12 Inner cylinder 12a Peripheral wall 12b End locking part 12c Bellows section (expandable part) 14 Air intake 16 Outlet 20 outer cylinder 20a Peripheral wall 20b slit 22 Air outlet 30 Blower 40 Control section 42 Transmission Mechanism 44 Pinion 46 racks 48 Movable tip 52 reels 54 wire A1,A2 space D Partition material H. Residential (building) R Target Room

Claims

1. A ventilation system comprising: An expandable inner tube that forms an airflow path; an outer cylinder having the inner cylinder housed therein and a blowout port for the air flowing through the flow path provided on a peripheral wall thereof; an operating unit that is operated to extend and retract the inner cylinder, The operating unit is operated to extend and contract the inner cylinder, thereby changing the position from which air is blown out through the outlet.

2. a blower that blows air into the flow path; The air blowing equipment according to claim 1 , wherein the air blower takes in air through an air intake port provided in a peripheral wall of the inner cylinder, and causes wind containing the taken-in air to flow into the flow path.

3. a plurality of the air outlets are provided on the peripheral wall of the outer cylinder at different positions in the extension / contraction direction of the inner cylinder, the inner cylinder has an outlet for the air that has flowed through the flow path, The position of the outlet changes in the direction of extension and contraction due to the extension and contraction of the inner cylinder, The air blowing equipment according to claim 1 , wherein the air that has flowed through the flow path is blown out through the air outlet that is closest to the exhaust outlet, among the plurality of air outlets.

4. The outlet is provided at a tip end of the peripheral wall of the inner tube in the extension / contraction direction, The air blowing equipment according to claim 3 , wherein the air that has flowed through the flow path is blown out through the outlet that faces the exhaust port, among the plurality of outlets.

5. the operating portion is disposed on the outside of the outer cylinder, The air blowing equipment according to claim 1 , further comprising a transmission mechanism connecting the operating portion and a peripheral wall of the inner cylinder, the transmission mechanism transmitting a force applied to the operating portion when the operating portion is operated to the inner cylinder.

6. The air blowing equipment according to claim 4 , wherein the tip of the inner cylinder is cylindrical and is rotatable relative to the outer cylinder in a circumferential direction of the inner cylinder.

7. The air blowing equipment according to any one of claims 1 to 6, a target room into which air is supplied by the air blowing equipment; The air blowing equipment supplies air into the target room by blowing the air flowing through the flow path formed by the inner tube out of the outlet of the outer tube located in the target room.

8. The target room is divided into a plurality of spaces in the vertical direction, The building according to claim 7, wherein the air blowing equipment draws in air from one of the plurality of spaces and supplies wind containing the drawn-in air to a space other than the one of the plurality of spaces.

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