Cartridge for a gas concentration device

Abstract

A cartridge of a gas concentration device is provided. The cartridge of the present invention houses: a rotor provided with a honeycomb structure body that carries an adsorbent that adsorbs VOC (Volatile Organic Compounds) contained in a treatment target gas; and a motor that rotates the rotor. A plurality of mounting portions for detachably mounting a seat that supports the motor are provided in the housing.

Description

TECHNICAL FIELD

[0001] The present application relates to a cartridge used for a gas concentration device that converts a low concentration of a target gas into a high concentration of a concentrated gas. BACKGROUND

[0002] In a gas concentration device, a rotor for converting a low concentration of a target gas into a high concentration of a concentrated gas is provided, and the rotor is rotated by receiving a driving force from a driving unit including a motor. The rotor and the driving unit are housed inside a cartridge, and the driving unit is fixed at a prescribed position inside the cartridge. SUMMARY

[0003] PROBLEMS TO BE SOLVED BY THE INVENTION

[0004] In the cartridge, if the driving unit (motor) is fixed at a prescribed position, the layout of equipment (specifically, equipment connected to the driving unit) arranged around the cartridge is restricted.

[0005] MEANS FOR SOLVING THE PROBLEMS

[0006] The cartridge of the present application houses a rotor and a motor. The rotor has a honeycomb structure body that carries an adsorbent that adsorbs VOC (Volatile Organic Compounds) contained in a target gas. The motor rotates the rotor. A plurality of mounting portions for detachably mounting a seat that supports the motor are provided in the housing.

[0007] The cartridge has a rotor, a motor, and a seat. First and second opening portions for avoiding interference with the motor can be provided in both end surfaces of the housing in the direction of the rotation axis of the rotor. The first and second opening portions are provided at positions that oppose each other in the direction of the rotation axis of the rotor. The seat in a state in which the motor is supported can be mounted to the mounting portions in either of a first attitude in which a portion of the motor protrudes from the first opening portion and a second attitude in which a portion of the motor protrudes from the second opening portion.

[0008] First and second opening portions for avoiding interference with the motor can be provided in one end surface of the housing in the direction of the rotation axis of the rotor. The seat in a state in which the motor is supported can be mounted to the mounting portions in either of a first attitude in which a portion of the motor protrudes from the first opening portion and a second attitude in which a portion of the motor protrudes from the second opening portion.

[0009] A sliding mechanism that slides the seat can be provided in the mounting portions. The direction in which the seat is slid is a direction that is orthogonal to the direction of the rotation axis of the rotor and is in the plane of the housing in which the mounting portions are provided. The sliding mechanism includes a guide rod that extends in the sliding direction of the seat and engages with the seat.

[0010] The pedestal has a plurality of mounting portions for detachably mounting the motor, which are arranged in a sliding direction of the pedestal. Each mounting portion of the pedestal has a sliding mechanism that slides the motor in a direction of an axis of rotation of the rotor.

[0011] A belt, a tension roller, a support, and a sliding mechanism can be provided in the case. The belt rotates the rotor by moving in response to a driving force from the motor while being wound around the rotor. The tension roller applies tension to the belt. The support supports the tension roller. The sliding mechanism slides the support in the direction of the axis of rotation of the rotor with respect to the pedestal.

[0012] The plurality of mounting portions for detachably mounting the pedestal can be provided on a bottom surface of the housing.

[0013] Effects of Invention

[0014] According to the present application, since the pedestal can be mounted to any of the plurality of mounting portions provided on the housing, the position of the motor supported by the pedestal can be changed. Furthermore, by changing the position of the motor, the layout of the devices disposed around the case (specifically, devices connected to the motor) has a degree of freedom. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a diagram that explains the principle of gas concentration.

[0016] Figure 2 is an appearance perspective view of the case.

[0017] Figure 3 is a side view of the case.

[0018] Figure 4 is a front view of the case.

[0019] Figure 5 is a rear view of the case.

[0020] Figure 6 is a diagram that shows the arrangement state of the drive unit in the inside of the case.

[0021] Figure 7 is a diagram that shows the arrangement state of the drive unit in the inside of the case.

[0022] Figure 8 is a perspective view that shows the outline of the base.

[0023] Figure 9 is a diagram as seen when the reinforcing plate and the rib are viewed from above.

[0024] Figure 10 is a diagram as seen when the reinforcing plate and the rib are viewed from the X-axis direction.

[0025] Figure 11is a view of the reinforcing plate and the ribs as seen from the Y-axis direction.

[0026] Figure 12 is a perspective view of a cover that covers a motor protruding from a housing of a cartridge.

[0027] Figure 13 is a view indicating a state in which an opening portion of a housing of a cartridge is blocked by a lid. DETAILED DESCRIPTION

[0028] (Principle of gas concentration)

[0029] The gas concentration device of the present embodiment converts a low-concentration treatment target gas into a high-concentration concentrated gas by using a rotor. The treatment target gas is specifically exhaust gas including VOC (Volatile Organic Compounds). The use of the gas concentration device of the present embodiment is not limited to the exhaust gas, and the gas concentration device of the present embodiment can be used for various gases. Figure 1 The principle of gas concentration is described. In the present embodiment, the X-axis, the Y-axis, and the Z-axis are mutually orthogonal axes, and the Z-axis direction corresponds to the vertical direction. The relationship between the X-axis, the Y-axis, and the Z-axis is the same as that of the XYZ coordinate system. Figure 1 Figures 2 to 13

[0030] The rotor 1 has a cylindrical hub (not shown) engaged with a rotation shaft, a plurality of spokes (not shown) extending radially from the hub, and a rim 1a connecting the front end portions of the spokes, and rotates in the direction of the arrow R with the hub as the center. A honeycomb structure 2 is disposed in a space surrounded by the hub, the spokes, and the rim. The honeycomb structure 2 has a base material formed of inorganic fibers or the like and an adsorbent carried by the base material. The adsorbent is used for adsorbing VOC, and as the adsorbent, for example, zeolite can be used. A plurality of pores are formed in the honeycomb structure 2, each of the pores extends in the direction of the rotation axis of the rotor 1 (the direction in which the rotation axis of the rotor 1 extends), and the treatment target gas flows along each of the pores.

[0031] A belt 3 is wound around the outer peripheral surface of the rotor 1, and the belt 3 is connected to a motor 4. By transmitting the driving force of the motor 4 to the belt 3, the rotor 1 can be rotated. The motor 4 is operated in response to an instruction from a controller (not shown).

[0032] Three partition pieces 5 are disposed on each of the two end surfaces of the rotor 1 in the direction of the rotation axis of the rotor 1. One of the end surfaces of the rotor 1 is shown in FIG. 6, but three partition pieces 5 are disposed at the same positions as those of the three partition pieces 5 shown in FIG. 6 on the other end surface of the rotor 1 as well. By the above-described partition pieces 5, the rotor 1 is partitioned into three regions in the circumferential direction of the rotor 1. As the three regions, there are a treatment region Al, a regeneration region A2, and a cooling region A3. Figure 1 Figure 1 ​​​​

[0033] The target gas flows through processing zone A1. As the target gas passes through processing zone A1, the VOCs contained in the target gas are adsorbed by the honeycomb structure 2, and the purified target gas is discharged from rotor 1. A high-temperature gas with a temperature higher than the boiling point of the VOCs flows through regeneration zone A2. As this high-temperature gas passes through regeneration zone A2, the VOCs adsorbed on the honeycomb structure 2 are detached from the honeycomb structure 2, and the gas containing the detached VOCs is discharged from rotor 1. Cooling gas used to cool the honeycomb structure 2 flows through cooling zone A3.

[0034] Rotating rotor 1 in the direction of arrow R, the processing in processing zone A1, regeneration zone A2, and cooling zone A3 are performed sequentially. In this embodiment, the target gas, high-temperature gas, and cooling gas are subjected to... Figure 1 The gas flows in the direction shown, but is not limited to this; the direction of flow of the target gas, high-temperature gas, and cooling gas can be appropriately determined.

[0035] (The structure of the box)

[0036] Next, use Figures 2 to 13 The structure of the box equipped with rotor 1 will be described.

[0037] like Figure 2 As shown, the box 100 has a rotor 1, a belt 3, a motor 4, and a housing 10. The housing 10 houses the rotor 1, the belt 3, and the motor 4. Figure 2 as well as Figure 3 As shown, two openings 11 are formed on the side 10a of the housing 10, arranged along the Z-axis. Figure 3 From Figure 2 The view (side view) shown when looking through box 100 in the direction of arrow X1.

[0038] Two openings 11 arranged along the Z-axis are also formed on the side opposite to side 10a in the X-axis direction. These openings 11 serve as space for operations inside the housing 10. When the rotor 1 is operated, the openings 11 are sealed with a cover (not shown).

[0039] like Figure 2 as well as Figure 4 As shown, two openings 12a and 12b are formed on one end face of the housing 10 in the Y-axis direction and at the two corners located below the housing 10. Figure 4 From Figure 2 The view shown is the front view as seen when looking through box 100 in the direction of arrow Y1.

[0040] like Figure 5As shown, two openings 12c and 12d are formed on the other end face of the housing 10 in the Y-axis direction and at the two corners located below the housing 10. Figure 5 From Figure 2 The diagram shown is a rear view of the box 100 as seen in the direction of arrow Y2. Opening 12c is opposite to opening 12a in the Y-axis direction, and opening 12d is opposite to opening 12b in the Y-axis direction. The relationship between openings 12a and 12c, and the relationship between openings 12b and 12d, corresponds to the relationship between the first opening and the second opening in this invention.

[0041] The openings 12a to 12d are spaces used to prevent interference between the motor 4 and the housing 10. In this embodiment, depending on the position and orientation of the motor 4 disposed inside the housing 10, a portion of the motor 4 protrudes from any one of the four openings 12a to 12d. Details will be described later.

[0042] In this embodiment, each opening 12a to 12d is formed into a triangular shape, but it is not limited to this and may be other shapes. In this embodiment, such as Figure 4 as well as Figure 5 As shown, a reinforcing frame 13 is arranged inside the housing 10 at the four corners of the housing 10, but in order to avoid the reinforcing frame 13, each opening 12a to 12d is formed into a triangular shape.

[0043] A detachable mounting is provided inside the housing 10. Figure 6 The mounting portions 10A and 10B of the drive unit 20 shown (refer to) Figure 4 as well as Figure 5 Mounting portions 10A and 10B are located at two corners below the housing 10 and are arranged along the bottom surface of the housing 10. In this embodiment, a drive unit 20 is mounted on either of the two mounting portions 10A and 10B. Figure 6 The image shows the state in which the drive unit 20 is installed in the mounting section 10A.

[0044] like Figure 6 As shown, the drive unit 20 includes a motor 4 and a tension roller 21, the output gear 4a of the motor 4, and the tension roller 21 and belt 3 (see reference). Figure 1 ) meshing.

[0045] The motor 4 is detachably mounted on the base 22 of the drive unit 20. The base 22 has a plurality of elongated holes 22a extending along the Y-axis and arranged along the X-axis. The motor 4 can be mounted on the base 22 by tightening nuts onto bolts that pass through a portion of the motor 4 and the elongated holes 22a. Thus, in this invention, the elongated holes 22a are used for detachably mounting the motor 4.

[0046] Since the long hole 22a extends in the Y-axis direction, the motor 4 can be caused to slide in the direction of the arrow Ym (Y-axis direction). In this regard, the long hole 22a has a sliding mechanism for causing the motor 4 to slide in the direction of the arrow Ym. By causing the motor 4 to slide in the direction of the arrow Ym, the position of the motor 4 in the Y-axis direction can be adjusted, and thus the meshing position of the output gear 4a with respect to the belt 3 can be adjusted. In addition, by selecting the long hole 22a in which the motor 4 is installed from among the plurality of long holes 22a arranged in the X-axis direction, the position of the motor 4 in the X-axis direction can be adjusted. Furthermore, the number of the long holes 22a arranged in the X-axis direction can be arbitrarily determined.

[0047] Furthermore, in the present embodiment, the long hole 22a is formed in the pedestal 22, and the motor 4 is caused to slide in the direction of the arrow Ym with respect to the pedestal 22, but the present application is not limited thereto. For example, even if a long hole (corresponding to the long hole 22a) extending in the Y-axis direction is formed in a portion of the motor 4, the motor 4 can be caused to slide in the direction of the arrow Ym with respect to the pedestal 22. The long hole 22a, the bolt, and the nut described above are a sliding mechanism for causing the motor 4 to slide.

[0048] The tension roller 21 is rotatably supported by a support member 23 that is detachably installed in the pedestal 22. The installation position (position in the Z-axis direction) of the support member 23 in the pedestal 22 can be the same as the installation position (position in the Z-axis direction) of the motor 4 in the pedestal 22, or can be different. For example, the installation position of the motor 4 can be positioned at a position higher than the installation position of the support member 23 in the Z-axis direction.

[0049] A plurality of long holes 23b extending in the Y-axis direction are formed in the installation portion 23a of the support member 23. By fastening the nut to the bolt that penetrates the pedestal 22 and the long hole 23b, the support member 23 can be installed in the pedestal 22. A hole 22c through which the bolt for installing the support member 23 penetrates is formed in the region of the pedestal 22 overlapping the installation portion 23a. In the present embodiment, the long hole 23b is formed in the installation portion 23a of the support member 23, but the present application is not limited thereto. For example, the long hole 23b can be formed in the pedestal 22. Figure 6 and Figure 7 As can be seen, the holes 22c through which the bolts for installing the support member 23 penetrate are provided on both end sides of the pedestal 22 in the X-axis direction. Since the long hole 23b extends in the Y-axis direction, the support member 23 can be caused to slide in the direction of the arrow Ys (Y-axis direction). Thereby, the position of the support member 23 in the Y-axis direction can be adjusted, and thus the meshing position of the tension roller 21 with respect to the belt 3 can be adjusted.

[0050] Further, in the present embodiment, the long hole 23b is formed in the mounting portion 23a of the support 23 to allow the support 23 to slide with respect to the pedestal 22 in the direction of the arrow Ys, but is not limited thereto. For example, even if a long hole (corresponding to the long hole 23b) extending in the Y-axis direction is formed in the pedestal 22, the support 23 can be allowed to slide with respect to the pedestal 22 in the direction of the arrow Ys. The long hole 23b, the bolt, and the nut described above are a sliding mechanism for allowing the support 23 to slide.

[0051] The pedestal 22 is detachably mounted to the base 14 disposed on the bottom surface of the housing 10. The base 14 constitutes a portion of the mounting portion 10A. Figure 8 A schematic view of a pair of the bases 14 disposed in the housing 10 is shown. Each base 14 extends in the X-axis direction and is composed of an upper surface 14a, a lower surface 14b, and one side surface 14c. The side surface 14c of one base 14 opposes the side surface 14c of the other base 14 in the Y-axis direction. Further, the shape of the cross section (Y-Z cross section) orthogonal to the length direction (X-axis direction) of the base 14 is not limited to the shape shown, but can be another shape, such as a shape enclosed by an upper surface, a lower surface, and two side surfaces. Figure 8 The shape of the cross section (Y-Z cross section) orthogonal to the length direction (X-axis direction) of the base 14 is not limited to the shape shown, but can be another shape, such as a shape enclosed by an upper surface, a lower surface, and two side surfaces.

[0052] Long holes 22b extending in the X-axis direction are formed in both side edges of the pedestal 22 in the Y-axis direction. By tightening the nuts on the bolts that pass through the base 14 and the long holes 22b, the pedestal 22 can be mounted to the base 14. Since the long holes 22b extend in the X-axis direction, the pedestal 22 can be allowed to slide in the direction of the arrow Xp (X-axis direction) and the position of the pedestal 22 in the X-axis direction can be adjusted.

[0053] Further, in the present embodiment, the long hole 22b is formed in the pedestal 22 to allow the pedestal 22 to slide with respect to the base 14 in the direction of the arrow Xp, but is not limited thereto. For example, even if a long hole (corresponding to the long hole 22b) extending in the X-axis direction is formed in the base 14, the pedestal 22 can be allowed to slide with respect to the base 14 in the direction of the arrow Xp. The long hole 22b, the bolt, and the nut described above are a sliding mechanism for allowing the pedestal 22 to slide.

[0054] As described above, since the motor 4 and the tension roller 21 are mounted to the pedestal 22, by allowing the pedestal 22 to slide in the direction of the arrow Xp, the position of the motor 4 in the X-axis direction and the position of the tension roller 21 in the X-axis direction can be adjusted.

[0055] A reinforcing plate 15 extending in the Y-axis direction is provided between the pair of pedestals 14, and is provided to reinforce the pedestals 14. In addition, a pair of ribs 16 is provided on the reinforcing plate 15. A guide rod 24 extending in the X-axis direction is provided on each of the pair of ribs 16. The guide rod 24 is used to slide the pedestal 22 in the X-axis direction, and constitutes a part of a sliding mechanism for sliding the pedestal 22.

[0056] A threaded groove is formed on the outer peripheral surface of the guide rod 24, and one end portion of the guide rod 24 penetrates the rib 16 and the reinforcing plate 15, and a nut 25a, 25b is engaged with the one end portion of the guide rod 24. The nuts 25a, 25b are disposed at positions sandwiching the rib 16 (a rib main body 16a described later). The other end portion of the guide rod 24 penetrates one end surface of the pedestal 22, and a nut 25c is engaged with the other end portion. After the position of the pedestal 22 in the X-axis direction is determined by sliding the pedestal 22 in the X-axis direction, the pedestal 22 can be fixed by tightening the nuts 25a to 25c.

[0057] Figures 9 to 11 is an enlarged view of the reinforcing plate 15 and the rib 16. Figure 9 is an enlarged view of the reinforcing plate 15 and the rib 16 as viewed from above, and the guide rod 24 and the nuts 25a, 25b attached to the reinforcing plate 15 and the rib 16 are indicated by broken lines. Figure 10 is a view as viewed from Figure 9 the direction of the arrow X2 shown in the figure, Figure 11 is a view as viewed from Figure 9 the direction of the arrow Y3 shown in the figure.

[0058] The rib 16 has a rib main body 16a disposed in the Y-Z plane, and a pair of arm portions 16b extending in the X-axis direction from both ends of the rib main body 16a. As shown in Figure 9 and Figure 10 shown in the figures, a recess 16c for disposing the guide rod 24 is formed in the rib main body 16a, and the recess 16c is recessed downward from the upper end surface of the rib main body 16a.

[0059] The reinforcing plate 15 has a first wall portion 15a disposed along the bottom surface of the housing 10, and a second wall portion 15b extending upward from the end portion of the first wall portion 15a. The rib main body 16a is fixed to the second wall portion 15b. As Figure 10 can be understood, the second wall portion 15b is disposed at a position not overlapping the recess 16c of the rib main body 16a as viewed in the X-axis direction.

[0060] Figure 6indicates a state where the driving unit 20 is installed in the installation portion 10A, and indicates a state where a part of the motor 4 protrudes from the opening portion 12a to the outside of the housing 10. Here, if the seat 22 on which the motor 4 and the support member 23 are installed is rotated in the X-Y plane, it can become Figure 7 the state shown. Figure 7 indicates a state where the driving unit 20 is installed in the installation portion 10A, and indicates a state where a part of the motor 4 protrudes from the opening portion 12a to the outside of the housing 10. Here, if the seat 22 on which the motor 4 and the support member 23 are installed is rotated in the X-Y plane, it can become

[0061] In Figure 6 and Figure 7 the state shown, the installation position of the motor 4 and the installation position of the support member 23 are different with respect to the seat 22. Specifically, in Figure 7 the state shown, after the seat 22 in Figure 6 the state shown is rotated by 180 degrees in the X-Y plane, the motor 4 and the support member 23 are replaced with respect to the seat 22. In Figure 7 the state shown, the motor 4 is installed in the long hole 22a in Figure 6 where the motor 4 is not installed. In addition, in Figure 7 the state shown, the support member 23 is installed in the hole 22c that is not covered by the installation portion 23a in Figure 6 Further, regardless of which state the seat 22 is in Figure 6 and Figure 7 the guide rod 24 penetrates both end surfaces of the seat 22 in the X-axis direction in a manner that penetrates the seat 22.

[0062] Figure 6 and Figure 7 indicates a state where the driving unit 20 is installed in the installation portion 10A, but in the case where the driving unit 20 is installed in the installation portion 10B, the driving unit 20 can also be installed in the same manner as in Figure 6 and Figure 7 the state shown. That is, the driving unit 20 can be installed in the installation portion 10B in a manner that a part of the motor 4 protrudes from the opening portion 12b to the outside of the housing 10, or the driving unit 20 can be installed in the installation portion 10B in a manner that a part of the motor 4 protrudes from the opening portion 12d to the outside of the housing 10. Here, the seat 22 in the state where the motor 4 is supported can be installed in the installation portion 10B in either of the attitude where a part of the motor 4 protrudes from the opening portion 12b, or the attitude where a part of the motor 4 protrudes from the opening portion 12d.

[0063] For the opening portion (any one of the opening portions 12a to 12d) in which a portion of the motor 4 protrudes, as shown in Figure 12 , a cover 17 formed in a shape that avoids interference with the motor 4 can be installed. By using this cover 17, the opening portion can be plugged. On the other hand, for the opening portion in which no portion of the motor 4 protrudes, as shown in Figure 13 , the opening portion (for example, the opening portion 12a) can be plugged by installing a flat plate-shaped cover 18.

[0064] As described above, according to the present embodiment, since the drive unit 20 can be installed in any one of the installation portions 10A, 10B, the position of the drive unit 20 in the cartridge 100 can be changed. In the past, since the position of the drive unit 20 (mainly, the position of the motor 4) in the cartridge 100 was fixed, the layout of the devices arranged around the cartridge 100 was limited. According to the present embodiment, the position of the drive unit 20 can be changed as described above, so the layout of the devices (specifically, the devices connected to the drive unit 20) arranged around the cartridge 100 can have degrees of freedom.

[0065] In addition, even in the case where the drive unit 20 is installed in any one of the installation portions 10A, 10B, the position of the motor 4 can be changed by changing the orientation of the drive unit 20. For example, as shown in Figure 6 and Figure 7 , even in the case where the drive unit 20 is installed in the installation portion 10A, a portion of the motor 4 can be made to protrude from the opening portion 12a or a portion of the motor 4 can be made to protrude from the opening portion 12c by changing the orientation of the drive unit 20, in other words, by rotating the pedestal 22 in the X-Y plane. Thereby, the degrees of freedom of the layout of the devices (specifically, the devices connected to the motor 4) arranged around the cartridge 100 can be improved.

[0066] Further, in the present embodiment, four opening portions 12a to 12d are formed in the housing 10 of the cartridge 100, but this is not limiting. Specifically, only one opening portion can be formed for each of the two installation portions 10A, 10B. For example, the opening portion 12a or the opening portion 12c can be formed for the installation portion 10A, and the opening portion 12b or the opening portion 12d can be formed for the installation portion 10B. Even in this case, the drive unit 20 can be installed in any one of the installation portions 10A, 10B, so the position of the drive unit 20 in the cartridge 100 can be changed.

[0067] In the present embodiment, two mounting portions 10A, 10B are provided inside the housing 10, but the number of mounting portions for mounting the drive unit 20 can be two or more. As long as the mounting portions are positions where the drive unit 20 and the rotor 1 do not interfere, the mounting portions can be provided, and thus the positions and the number of the mounting portions can be determined taking this into consideration. In the present embodiment, the positions where the mounting portions 10A, 10B are provided are positions that become dead spaces inside the housing 10, and thus the mounting portions 10A, 10B can be provided while suppressing the increase in size of the housing 10. In addition, it is sufficient that an opening portion (corresponding to the opening portions 12a to 12d) for avoiding interference with the motor 4 is formed on the housing 10 according to the positions of the respective mounting portions.

[0068] In the present embodiment, the mounting portions 10A, 10B are arranged along the bottom surface of the housing 10, but are not limited thereto. As described above, as long as the mounting portions 10A, 10B are positions where the drive unit 20 and the rotor 1 do not interfere, the mounting portions 10A, 10B can be arranged, and the mounting portions 10A, 10B can be arranged at any positions inside the housing 10. For example, the mounting portions 10A, 10B can be arranged not on the bottom surface of the housing 10 but on the side surface (Y-Z plane) or the upper surface (X-Y plane) of the housing 10.

Claims

1. A box, characterized in that, The box has a housing that houses: a rotor having a honeycomb structure carrying an adsorbent for adsorbing VOCs contained in the gas being treated; and a motor that rotates the rotor. The housing is provided with multiple mounting parts for detachably mounting a pedestal that supports the motor. The mounting section is provided with a sliding mechanism that allows the base to slide.

2. The box according to claim 1, characterized in that, The box includes the rotor, the motor, and the base.

3. The box according to claim 2, characterized in that, The housing has a first opening and a second opening on each of its two end faces in the direction of the rotor's rotation axis, respectively, for avoiding interference with the motor. The pedestal, with the motor supported, can be mounted on the mounting portion in either a first posture in which a portion of the motor protrudes from the first opening, or a second posture in which a portion of the motor protrudes from the second opening.

4. The box according to claim 3, characterized in that, The first opening and the second opening are positioned opposite each other along the rotation axis of the rotor.

5. The box according to claim 2, characterized in that, The housing has two or more openings on only one end face in the direction of the rotor's rotation axis to avoid interference with the motor. The pedestal, with the motor supported, can be mounted on the mounting portion in an orientation in which a portion of the motor protrudes from either of the openings.

6. The box according to claim 5, characterized in that, For openings that protrude a portion of the motor, a first cover is installed in a shape designed to avoid interference with the motor; for openings that do not protrude a portion of the motor, a second cover in the shape of a flat plate is installed.

7. The box according to any one of claims 1 to 5, characterized in that, The sliding mechanism allows the platform to slide relative to the mounting portion within the plane of the housing on which the mounting portion is provided, and in a direction orthogonal to the rotation axis of the rotor.

8. The box according to claim 7, characterized in that, The sliding mechanism includes a guide rod that extends along the sliding direction of the platform and engages with the platform.

9. The box according to claim 7, characterized in that, The platform has multiple mounting portions arranged along the sliding direction of the platform for detachably mounting the motor.

10. The box according to claim 9, characterized in that, Each of the mounting portions of the platform has a sliding mechanism that allows the motor to slide along the rotation axis of the rotor.

11. The box according to any one of claims 1 to 5, characterized in that, The box has: A belt that rotates the rotor by being wound around it and receiving driving force from the motor; A tension roller that applies tension to the belt; Support member supporting the tension roller; as well as A sliding mechanism that allows the support member to slide relative to the platform along the rotation axis of the rotor.

12. The box according to any one of claims 1 to 5, characterized in that, The plurality of mounting portions for detachable installation of the pedestal are provided on the bottom surface of the housing.

Images