Exhaust device

Abstract

To provide an exhaust device that can be easily carried and stored in an assembled state.SOLUTION: The present invention provides an assembly-type exhaust device X comprising an air intake part 1, an air blower 3, a flexible tube 4 that can expand and contract and bend, and a shape holding member that can maintain the shape of the flexible tube 4. The air blower 3 and the air intake part 1 are connected to both end parts of the flexible tube 4, respectively. The shape holding member can hold the air intake part 1, the air blower 3, and the flexible tube 4 when the flexible tube 4 is in a contracted state.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to an exhaust device that can be easily moved, installed, removed, and stored. [Background technology]

[0002] When cooking indoors, it is necessary to properly exhaust steam, smoke, oil mist, etc. to minimize the impact on the indoor environment, and kitchens are equipped with exhaust systems for this purpose. However, there are many situations that require strong ventilation, not just in kitchen cooking, such as cooking hot pot on a portable stove, separating smoking areas within the home, and ventilation as a measure against infectious diseases. To address these needs, ventilation systems that allow air intakes to be installed in any location have been developed. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2003-176941 Summary of the Invention [Problem to be solved by the invention]

[0004] Patent Document 1 discloses a smoke exhaust mechanism that includes a shade, a self-standing smoke exhaust pipe, and an electric fan, and that can exhaust smoke from any location in a room. However, this type of smoke exhaust mechanism is not permanently installed, and must be carried, assembled, and disassembled each time it is used, and consideration must also be given to ease of handling when storing it.

[0005] SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide an exhaust device that can be easily carried and stored in an assembled state. [Means for solving the problem]

[0006] The present invention, which solves the above problem, is an assembly-type exhaust device comprising an intake section, a blower, a flexible tube that can expand and contract and bend, and a shape-retaining member that can retain the shape of the flexible tube, wherein the blower and the intake section are connected to both ends of the flexible tube, respectively, and the shape-retaining member can retain the intake section, the blower, and the flexible tube when the flexible tube is in a contracted state. This configuration allows the exhaust device to be easily transported and stored in its assembled state.

[0007] In a preferred embodiment of the present invention, the shape-retaining member is capable of holding the flexible tube, the blower, and the air intake portion in a line. This configuration makes the exhaust device easier to transport and store in its assembled state.

[0008] In a preferred embodiment of the present invention, the shape-retaining member is capable of maintaining the central axes of the flexible tube, the blower, and the intake section parallel to one another. This configuration makes the exhaust device easier to transport and store in its assembled state.

[0009] In a preferred embodiment of the present invention, the shape-retaining member is a sheet material having a fastening portion that can maintain the enclosed state in which the sheet material is rolled into a cylindrical shape. With this configuration, the shape-retaining member can be easily attached to the flexible tube.

[0010] In a preferred embodiment of the present invention, the device further comprises a support capable of supporting the intake section at a predetermined height. With this configuration, the intake section can be easily installed regardless of the strength of the flexible tube. [Effects of the Invention]

[0011] The present invention, which solves the above problems, provides an exhaust device that can be easily carried and stored in an assembled state. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is an explanatory diagram showing a state in which an exhaust device according to a first embodiment of the present invention is used; [Figure 2] 1 is a schematic diagram showing components of an exhaust system and their assembled state according to a first embodiment of the present invention; [Figure 3] 1 is a schematic diagram showing components of an exhaust system and their assembled state according to a first embodiment of the present invention; [Figure 4] 1 is a schematic diagram illustrating a configuration of a holding sheet included in an exhaust device according to a first embodiment of the present invention. [Figure 5] 1 is a schematic diagram showing a storage state of an exhaust device according to a first embodiment of the present invention. FIG. [Figure 6] FIG. 4 is an explanatory diagram showing a modified example of the exhaust device according to the first embodiment of the present invention. [Figure 7] FIG. 6 is an explanatory diagram showing components of an exhaust system and their assembled state according to a second embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0013] The exhaust device X according to each embodiment of the present invention will be described below with reference to the drawings. The description will be made in detail in the order of the configuration of the embodiment, the method of implementation, and other examples. It should be noted that the following embodiments are merely examples of the present invention, and the present invention is not limited to the following embodiments.

[0014] First Embodiment As shown in Fig. 1, the exhaust device X according to this embodiment includes an intake section 1, a support 2 that supports the intake section 1, a blower 3, a flexible tube 4 that can expand and contract and bend, an exhaust section 5, and a shape-retaining member that can maintain the shape of the flexible tube 4, forming a single flow path. Furthermore, as shown in Figs. 2(a) and 3(a), the exhaust device X is an assembly type in which each part is detachable from the other. This configuration not only makes it easy to manage and replace parts, but also makes it easy to disassemble the exhaust device X, allowing the inner walls of each part that have become soiled by exhaust to be easily cleaned. Here, the dashed dotted line in each drawing is a central axis indicating the center of each component or the flow path of the exhausted gas.

[0015] As shown in Figure 2(a), the intake unit 1 is a tubular member having an intake unit main body 11 and a pipe connection part 12, and takes in gas discharged by the exhaust device X. The intake unit 1 also has a support connection part 13 and an inner lid 14, and the installation location and intake volume can be adjusted.

[0016] The intake unit main body 11 is a tubular, funnel-shaped member that surrounds the central axis and has one opening that is larger than the other, and the narrowed side (smaller opening) is continuously connected to the pipe connection unit 12. This configuration not only allows for efficient intake of air, but also allows it to be used as a highly stable leg when the exhaust device X is stored upright, as shown in Figure 5.

[0017] The tube connection part 12 is a cylindrical member extending from the narrowed opening of the intake part main body 11, and can be connected to the flexible tube 4 so that the gas flow path is connected. The tube connection part 12 may be a simple tube as long as it can fit into the open end of the flexible tube 4, but it may also be a stepped tube or have a groove for connection. This configuration improves the airtightness of the flow path and increases the exhaust efficiency.

[0018] The support connecting part 13 is a member provided to protrude from the outer wall surface of the intake part main body 11 or the pipe connecting part 12, and connects to the support 2 that can hold the intake part 1 at a predetermined height. With this configuration, when the intake part 1 is supported using a table T or the like as shown in Fig. 1, the position and posture of the intake part 1 are less likely to shift, and it can be easily stabilized. Also, although Fig. 2(a) shows a state in which the support 2 is detached from the support connecting part 13, the support connecting part 13 may be provided integrally with the support 2 by welding or the like.

[0019] The inner lid 14 is a flat plate-like member that is rotatably provided near the narrowed side inside the intake unit main body 11 or inside the tube connection part 12, and its rotation axis is provided in a direction approximately perpendicular to the central axis. The size of the inner lid 14 in the planar direction is preferably slightly smaller than the cross-sectional area of ​​the inside of the tube connection part 12, and particularly preferably is 90% or more but less than 100%. With this configuration, the inner lid 14 can be rotated about the rotation axis to expand or reduce the cross-section of the flow path, thereby adjusting the amount of air intake from the intake unit main body 11. The inner lid 14 is preferably configured to have a protruding operating part at at least one location on the outer peripheral surface of the intake unit main body 11 or the tube connection part 12, which enables operation related to rotation.

[0020] The support body 2 has a support arm 21 and a retainer 22, and is capable of holding the intake unit 1 at a predetermined height. In Fig. 2(a), the support body 2 is shown detached from the intake unit 1, but it may be provided integrally with the intake unit 1.

[0021] The support arm 21 is a linear or tubular member that has multiple joints and can be bent, allowing the position and posture of one end relative to the other end to be freely changed. The support arm 21 also has enough rigidity (particularly bending rigidity) to support the intake unit 1 and the flexible tube 4, and can maintain the intake unit 1 at a predetermined height and posture. In other words, the support arm 21 as a whole can support the combined mass of the intake unit 1 and one flexible tube 4, and has enough rigidity (particularly bending rigidity) not to bend with that amount of mass.

[0022] As described above, the support arm 21 may be in any form as long as it has sufficient rigidity to support the intake unit 1 and the flexible tube 4. For example, the support arm 21 is made up of a flexible pipe joint. This allows for ease of bending when manual force is applied locally, while also providing the rigidity to support the intake unit 1 and the flexible tube 4. Alternatively, the support arm 21 may be an articulated arm in which multiple beams are connected in series at joints provided with stoppers.

[0023] The retainer 22 is a mechanism having a U-shaped fixed part and a movable part that can be moved linearly relative to the fixed part by a screwdriver or the like, and is capable of clamping and holding a flat object. In other words, the retainer 22 has the same structure and principle as a well-known vice. The retainer 22 is also fixedly connected to one end of the support arm 21, and the two of them hold the intake unit 1 at a predetermined height and posture.

[0024] The blower 3 has a housing 31, a motor 32, a fan 33, and a pipe connection part 34. The interior of the housing 31 serves as a flow path, and kinetic energy is imparted to the gas so that it flows in a predetermined direction. This generates a flow of gas in the flow path from the intake part 1 toward the exhaust part 5.

[0025] The housing 31 is a cylindrical member surrounding the central axis, and determines the outer shape and flow path shape of the blower 3. The housing 31 also has a support column capable of supporting the motor 32 inside, and further has a support section 311 and a power supply accommodating section 312 on the outside.

[0026] The support portion 311 is a frame or leg that protrudes away from the central axis of the cylindrical housing 31, and supports the air blower 3 placed on the floor F or the like, and maintains its posture. With this configuration, the exhaust device X can be easily and stably installed anywhere indoors.

[0027] The power supply accommodating section 312 is a box-shaped member that protrudes from the cylindrical housing 31 in a direction away from the central axis and in a direction different from that of the support section 311, and accommodates a battery, an AC adapter, or the like inside. This provides power to operate the motor 32.

[0028] The motor 32 is a general electric motor having a rotating shaft that outputs in the direction of the central axis, and is fixedly connected to the housing 31. The motor 32 is preferably configured so that its rotating shaft is located on the central axis. This configuration ensures symmetry in the flow path cross section and maintains high operating efficiency of the fan 33 (described below). In this case, it is preferable that the support columns connecting the housing 31 and the motor 32 are configured in the form of spokes that radiate from the central axis.

[0029] The fan 33 is a general impeller having a central part attached to the rotating shaft of the motor 32 and multiple blades, and rotates with the rotation obtained by the motor 32, imparting kinetic energy to the gas in the flow path. Furthermore, like the motor 32, the fan 33 is preferably configured so that its rotating shaft is located on the central axis. With this configuration, the kinetic energy generated by the rotation of the fan 33 can be efficiently converted into the movement of the gas in the flow path.

[0030] The tube connection part 34 is a cylindrical member provided to extend the openings at both ends of the cylindrical housing 31, and has a connection part main body that can be fitted and connected to the flexible tube 4, and a tapered part that matches the size of the flow path cross section of the flexible tube 4 to the flow path cross section of the housing 31. This configuration makes it easy to connect the flexible tube 4, and also reduces the area where the gas flow path cross section is narrowed by the motor 32.

[0031] In the blower 3, it is preferable that each part, i.e., the housing 31, the motor 32, the fan 33, and the pipe connection part 34, is provided with a locking part, a fitting part, etc., so that they can be disassembled and assembled together. With such a configuration, the inner wall of the blower 3, which becomes soiled by the exhaust gas, can be easily cleaned.

[0032] The flexible tube 4 is a cylindrical member whose diameter regularly changes due to a taper, i.e., a cylindrical member whose wall has a bellows structure, and is capable of expanding and contracting and bending. The flexible tube 4 also has non-tapered sleeves at the openings on both ends, which allows it to be connected to the intake unit 1, the blower device 3, and the exhaust unit 5. The flexible tube 4 also preferably has a degree of rigidity that allows it to be easily bent by the weight of the intake unit 1. With this configuration, the user can deform the flexible tube 4 with little force, making it easy to install and remove the exhaust device X.

[0033] Furthermore, in the following description and drawings, the flexible tube 4 connected between the intake unit 1 and the blower 3 is referred to as the first flexible tube 41, and the flexible tube connected between the blower 3 and the exhaust unit 5 is referred to as the second flexible tube 42. The first flexible tube 41 and the second flexible tube 42 may have different shapes to suit the components to which they are connected, but it is preferable that the openings at both ends are at least the same size and shape. With this configuration, the user does not need to distinguish between the two flexible tubes 4, making it easier to assemble the exhaust device X.

[0034] The exhaust unit 5 is a cylindrical member surrounding the central axis, and includes an exhaust unit main body 51 and a pipe connection unit 52. The exhaust unit 5 is also disposed at the most downstream end of the flow path, and the exhausted gas flows out to the outside.

[0035] The exhaust unit main body 51 is a cylindrical member with a flat flow passage cross section perpendicular to the central axis, from which the exhaust gas flows to the outside. Furthermore, the exhaust unit main body 51 is preferably configured to be elongated perpendicular to the central axis and have a shape with two parallel flat surfaces, such as a rectangular (including shapes with rounded corners) or oval cross section. With this configuration, the exhaust unit main body 51 can be used by clamping it between gaps in windows W, doors, etc., as shown in FIG. 1, allowing the gas to be easily and stably exhausted to the outdoors.

[0036] The tube connection part 52 is a cylindrical member that is smoothly connected to the exhaust part main body 51 by a three-dimensional curved surface or the like, and has approximately the same cross section as the flexible tube 4. With this configuration, it can be easily fitted and connected to the flexible tube 4, and the shape of the exhaust part main body 51 can be freely determined.

[0037] It is preferable that the pipe connection part 12 of the intake part 1, the pipe connection part 34 of the blower 3, and the pipe connection part 52 of the exhaust part 5 are configured to form flow path cross sections of approximately the same shape. With this configuration, the exhaust device X can be assembled as long as all of the open ends of the flexible pipes 4 have the same size and shape, and the user can easily perform the assembly work without having to consider the orientation of each part.

[0038] As described above, the intake section 1, blower 3, flexible tube 4, and exhaust section 5 are assembled together as shown in Figures 1, 2(b), and 2(c) to form a gas flow path for exhaust. At this time, the central axes of each part are aligned in a row or in series, and the flexible tube 4 can be stretched and bent to allow exhaust in any shape, as shown in Figure 1. In the following description, the state in which the flexible tube 4 is most contracted and becomes a straight tube, as shown in Figures 2, 3, 4, and 5, is referred to as the contracted state. At this time, the central axes of the intake section 1, the blower device 3, the flexible tube 4, and the exhaust section 5 are parallel to one another or aligned in a straight line.

[0039] The exhaust device X further includes a shape-retaining member capable of holding the intake section 1, the blower 3, the flexible tube 4, and the exhaust section 5 in the contracted state. This shape-retaining member is a member that prevents the flexible tube 4 from deforming, or that maintains a constant position or posture of the intake section 1 and the exhaust section 5 relative to the blower 3. This allows the user to easily carry the assembled exhaust device X. Furthermore, it is preferable that the shape-retaining member is configured to be able to hold the intake section 1, the blower 3, the flexible tube 4, and the exhaust section 5 in a line, and more preferably, is configured to be able to hold the central axes of the intake section 1, the blower 3, the flexible tube 4, and the exhaust section 5 parallel to each other.

[0040] As shown in FIGS. 3(a) and 4(a), the exhaust device X includes a retaining sheet 6 as a shape-retaining member. The retaining sheet 6 is a substantially rectangular sheet material having a predetermined size. As shown in FIGS. 3(b) and 4(b), the retaining sheet 6 is wrapped around the flexible tube 4 to retain its shape and further to retain the intake unit 1, the blower 3, the flexible tube 4, and the exhaust unit 5 in an assembled state. In other words, the retaining sheet 6 is a shape-retaining member that can retain the intake unit 1, the blower 3, the flexible tube 4, and the exhaust unit 5 in a line or to retain their respective central axes parallel to each other (or in a straight line). This configuration allows the intake unit 1, the blower 3, the flexible tube 4, and the exhaust unit 5 to be easily transported or stored in an assembled state. Furthermore, when the exhaust device X is in use, it can be stored in a small space in a flat state as shown in FIG. 3(a), eliminating unnecessary space.

[0041] Furthermore, the length of each side of the retaining sheet 6 in the central axis direction is preferably several centimeters to 10 cm longer than the flexible tube 4 in the contracted state, and several centimeters to 10 cm longer in the direction perpendicular to the central axis than the circumferential length of the side surface of the flexible tube 4 or the circumferential length of the side surface of the tube connection portion 34 of the blower 3. With this configuration, the flexible tube 4 in the contracted state is completely surrounded, and the flexible tube 4 can be protected from damage when the exhaust device X is carried or stored.

[0042] The material of the retaining sheet 6 is preferably a material that is strong enough to withstand manual force and has elasticity that allows it to be easily bent into a cylindrical shape and restored to its original flat shape, and in this embodiment, resin is preferred. With this configuration, the required strength and elasticity can be easily obtained, and the shape-retaining member can be made lightweight and low-cost.

[0043] The retaining sheet 6 has fastening portions 61 and holes 62. The fastening portions 61 are fasteners provided in pairs along two opposing sides of the retaining sheet 6, particularly along two sides parallel to the central axis that are expected to be used, and enable the retaining sheet 6 to maintain its enclosed state when rolled into a cylindrical shape. In this embodiment, a metal fastener, particularly a metal button, is preferred as an example of the fastening portion 61. This configuration not only ensures the elasticity of the retaining sheet 6 and is able to withstand impacts when carrying the exhaust device X, but also allows the retaining sheet 6 to be attached and detached with a simple operation.

[0044] The hole 62 is an opening provided in one or more directions different from the fastening portion 61, and is large enough to allow a person's fingers to pass through to handle the holding sheet 6. Furthermore, it is preferable that the hole 62 is provided at approximately equal intervals in a direction perpendicular to the central axis, i.e., in the circumferential direction surrounding the central axis in the enclosed state. This configuration not only improves the design in the enclosed state, but also makes it easy for the user to handle the holding sheet 6 without having to consider the orientation of the holding sheet 6.

[0045] As an example of the arrangement of the fastening portions 61 and the holes 62, as shown in Figure 4(a), two or three pairs of fastening portions 61 are provided along two opposing sides of the retaining sheet 6, and three holes 62 are provided in a direction perpendicular to the side on which the fastening portions 61 are provided, preferably in the center of the length in the central axis direction. This configuration minimizes the number of parts and the amount of processing required during manufacturing. In addition, it is preferable that the holes 62 are arranged at equal angular intervals around the central axis when the retaining sheet 6 is in an enclosed state.

[0046] As shown in Figures 3(a) and 3(b), the band 7 is a strip-shaped member whose length can be adjusted, and like the retaining sheet 6, it can be wrapped around the outside of the flexible tube 4 or the retaining sheet 6. This configuration not only makes it possible to easily connect the flexible tube 4 to the intake section 1, the blower 3, and the exhaust section 5, but also allows the surrounding retaining sheet 6 to be fastened and fixed to the housing 31 of the blower 3, etc., for more stable retention.

[0047] The connector 8 is a linear component having a hook 81 and an elastic cord 82, and as shown in FIG. 3(b), connects the retaining sheet 6 wound around the first flexible tube 41 and the retaining sheet 6 wound around the second flexible tube 42, making it possible to maintain the relative positions of the two. It is preferable to provide a plurality of connectors 8, as shown in FIGS. 3(a) and 3(b). With this configuration, the positional relationship between the first flexible tube 41 and the second flexible tube 42 can be maintained from a plurality of angles relative to the central axis, making it possible to more stably hold the entire exhaust device X in the contracted state.

[0048] The hooks 81 are hook-shaped members provided at both ends of the connecting body 8, and can be engaged with the holes 62, etc. With this configuration, the holes 62 can be used to more stably hold the exhaust device X in the contracted state.

[0049] The elastic cord 82 is a linear member connecting the two hooks 81, and together with the hooks 81, holds the two holding sheets 6 sandwiching the blower device 3. In addition, it is preferable that the elastic cord 82 is configured to be shorter than the distance between the holes 62 of the two holding sheets 6 shown in Figure 3(b) in its natural state and be able to extend from there. With this configuration, the restoring force of the elastic cord 82 pulls the two holding sheets 6 in the attracting direction, making it possible to more stably maintain the contracted state of the exhaust device X.

[0050] The exhaust device X may have the following configurations. However, the configurations shown below are merely examples, and the presence or absence of the configurations is determined arbitrarily unless otherwise specified.

[0051] <Example of change> The retaining sheet 6 may have sub-holes 63 along the sides perpendicular to the central axis. As shown in Fig. 6(a) , when the flexible tube 4 is extended and used while the retaining sheet 6 is still wrapped around it, the sub-holes 63 allow a locking member, string, or the like to be hung around the flexible tube 4 or the exhaust section 5 to be fixed in a predetermined position.

[0052] The pipe connection portion 12 of the intake unit 1 and the pipe connection portion 52 of the exhaust unit 5 may be provided with a hook-shaped locking body or a protrusion that can penetrate the sub-hole 63. This, in combination with the sub-hole 63, locks the intake unit 1 and the exhaust unit 5 to the holding sheet 6. FIG. 6(b) shows a configuration in which the locking body provided on the pipe connection portion 12 of the intake unit 1 locks with the sub-hole 63. This configuration prevents the intake unit 1 and the exhaust unit 5 from coming off the holding sheet 6 and dropping off when the exhaust device X is assembled as shown in FIGS. 3(b), 4(b), and 5, making the exhaust device X easier to carry.

[0053] Hereinafter, a method for carrying out the present invention will be described in detail with reference to the drawings. The ...

[0054] <<Implementation Method>> The exhaust device X has an intake section 1 installed anywhere indoors, to which a blower 3, a flexible pipe 4, and an exhaust section 5 are connected, and is used particularly for exhausting air at locations away from installed (building-mounted) ventilation devices.

[0055] <Assembly> The user first connects the two flexible tubes 4 to the intake unit 1, the blower 3, and the exhaust unit 5, respectively. The order of construction at this time, from upstream of the flow path, is intake unit 1, first flexible tube 41, blower 3, second flexible tube 42, and exhaust unit 5. When connecting the flexible tubes 4, the user fits the open ends of each flexible tube 4 into the tube connection part 12 of the intake unit 1, the tube connection part 34 of the blower 3, and the tube connection part 52 of the exhaust unit 5, respectively, and tightens and fixes them with bands 7 as necessary. However, the support 2 may already be attached to the intake section 1 at this stage, or may be connected to the intake section 1 at a later stage.

[0056] Next, the user contracts the first flexible tube 41 and the second flexible tube 42 to a contracted state, wraps the retaining sheet 6 around them to create an enveloping state, and then fastens the opposite side of the retaining sheet 6 with the fasteners 61. The user then fits one end of the tubular retaining sheet 6 into the pipe connection portion 34 of the blower 3 and fastens it with the band 7. The user then attaches the connectors 8 to the retaining sheets 6. At this time, the hooks 81 are hooked into the holes 62 of one of the retaining sheets 6, and the elastic strings 82 are stretched and hooked into the holes 62 of the other retaining sheet 6 that sandwich the blower 3. This process is repeated the number of times equal to the number of connectors 8 (or the number of holes 62) to assemble the exhaust device X into the state shown in Figures 3(b) and 4(b). This limits deformation of the flexible tube 4, making it easier to carry the exhaust device X in an assembled state.

[0057] <Installation> The user carries and moves the assembled exhaust device X to a desired location, and places the exhaust device X in a location (such as the floor F) where the blower device 3 is stable. The user then removes the fasteners 61 and the like to remove the retaining sheet 6 from the flexible tube 4, and stretches, bends, or the like the flexible tube 4 to install the intake section 1 and the exhaust section 5 in a desired location.

[0058] When installing the intake unit 1, the user first fully extends the first flexible tube 41, and at the same time bends the support arm 21 of the support body 2, and then clamps the top or legs of a table (such as table T) with the retaining device 22 to fix the support body 2 in a predetermined location, thereby supporting the intake unit 1 at the desired height and in the desired direction.

[0059] When installing the exhaust unit 5, the user first extends the second flexible tube 42, bending it as necessary, and places the exhaust unit 5 at an opening in the room, such as a window W or a door. The user then opens the opening slightly and sandwiches the exhaust unit main body 51 in the gap. At this time, the user may seal the top and bottom of the gap where the exhaust unit main body 51 is sandwiched with tape or the like as necessary to prevent the exhausted gas from returning to the room.

[0060] <Operation> With the exhaust device X installed as described above, the user operates the blower 3 to exhaust the air from the work space near the intake section 1. The power source supplied to the blower 3 at this time may be a pre-installed battery or an electrical outlet. Furthermore, the user can adjust the amount of gas drawn in from the intake section 1 by manipulating the inner lid 14 to change its angle.

[0061] <Removal and Dismantling> The user disassembles and removes the exhaust device X by reversing the procedure of the installation and assembly described above. In particular, by disassembling the exhaust device X, the inner walls of each part that have become soiled by exhaust gas can be easily cleaned.

[0062] <Storage> A user can store the exhaust device X in a contracted state with its shape maintained by the retaining sheet 6 upright on the floor F with the intake section 1 facing vertically downward, as shown in Fig. 5. This allows the exhaust device X to be stored in a minimum amount of floor space. Furthermore, because the exhaust device X is stored in an assembled state, when the exhaust device X is to be used, it can be immediately carried to the work site without the need for assembly.

[0063] <Other> A retaining sheet 6 may be used to install the flexible pipe 4 or the exhaust unit 5. In this case, the user extends the second flexible pipe 42 with the retaining sheet 6 still wrapped around it, and then attaches a stopper, string, or the like to the sub-hole 63 of the retaining sheet 6 to support and install the exhaust unit 5 at a predetermined height. This allows the flexible pipe 4 to be held in a location that is unlikely to get in the way of the user even while the exhaust device X is operating (i.e., during exhaust), and also makes it easy to install the exhaust unit 5 in a location that is at least a certain height above the floor F, such as a kitchen range hood or ventilation system.

[0064] A second embodiment of the present invention will be described in detail below with reference to the drawings. The same components as those in the first embodiment are designated by the same reference numerals and will not be described again. The following example is merely an example of the present invention, and the present invention is not limited to the following embodiment.

[0065] Second Embodiment As shown in Figures 7(a) and 7(b), the exhaust device X is equipped with a holding rod 9 as a shape-retaining member. The holding rod 9 is a rod-shaped member that is rigid enough that it is not easily bent by human force, and as shown in Figure 7(b), it enables the intake unit 1 and the blower device 3, and the blower device 3 and the exhaust unit 5 to be connected at multiple locations. As a result, the holding rod 9 makes it possible to maintain a constant position and posture of the intake unit 1 and the exhaust unit 5 relative to the blower device 3, or to maintain the central axes of the intake unit 1, the blower device 3, the flexible tube 4, and the exhaust unit 5 in a straight line.

[0066] As shown in FIG. 7(b), the intake section 1, the blower 3, and the exhaust section 5 have a penetration section H. The penetration section H is a cylindrical member or hole having a cross section substantially identical in shape to the cross section of the holding rod 9, allowing the end of the holding rod 9 to penetrate several centimeters. With this configuration, both ends of the holding rod 9 can be connected to the respective components of the intake section 1, the blower 3, and the exhaust section 5 with a simple operation, and the shape of the exhaust device X can be maintained in a contracted state.

[0067] It is preferable that a plurality of holding rods 9 and penetration portions H are provided around the central axis on both the first flexible tube 41 side and the second flexible tube 42 side. This configuration not only makes it possible to stably maintain the positional relationship of the components of the exhaust device X, but also limits deformation in the bending and flexing directions of the flexible tube 4. Furthermore, a user can insert their finger into the gap between the holding rod 9 and the flexible tube 4 and use the holding rod 9 as a handle, making it easy to carry the exhaust device X. [Explanation of symbols]

[0068] X Exhaust system 1. Intake section 11 Intake unit body 12 Pipe connection 13 Support connection part 14 Inner lid 2 Support 21 Support arm 22 Retainers 3. Blower 31 Housing 311 Support part 312 Power supply housing 32 motor 33 Fans 34 Pipe connection 4 Flexible tube 41 First flexible tube 42 Second flexible tube 5 Exhaust section 51 Exhaust unit body 52 Pipe connection 6 Retaining Sheet 61 Tomebe 62 Hole 63 Sub-hole 7 bands 8 Concatenation 81 Hook 82 Elastic cord 9 Holding rod B beam F floor H Penetration section P pot T-table W window

Claims

1. An assembly-type exhaust device comprising an intake section, a blower, a flexible tube that can expand and contract and bend, and a shape-retaining member that can retain the shape of the flexible tube, The blower and the intake unit are connected to both ends of the flexible tube, respectively; The shape-retaining member is capable of holding the intake section, the blower, and the flexible tube in a contracted state in which the flexible tube is contracted.

2. The shape-retaining member can hold the flexible tube, the blower, and the intake section in a line.

10. The exhaust system of claim 1.

3. The shape-retaining member can maintain the central axes of the flexible tube, the blower, and the intake section parallel to each other.

10. The exhaust system of claim 1.

4. the shape-retaining member is a sheet material, The sheet material has a fastening portion that can maintain the wrapped state rolled into a cylindrical shape.

10. The exhaust system of claim 1.

5. Further provided is a support capable of supporting the intake section at a predetermined height.

10. The exhaust system of claim 1.

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