ventilation equipment

Abstract

The ventilation device (30) according to the present disclosure comprises: a box (1) that is provided with a suction opening in the bottom and a blowout opening (5) in a side different from the bottom; a fan case that houses a fan and directs air from the suction opening to the blowout opening (5); and an adapter (3) that is fixed to the side where the blowout opening (5) is provided, as a component independent of the box (1). The fan case has a temporary fixing portion (27) for temporarily fixing the box (1) to the adapter (3).

Description

[Technical Field]

[0001] The present disclosure relates to a ventilation device installed on a ceiling or the like of a building. [Background technology]

[0002] BACKGROUND ART Conventional ventilation devices are known that have a structure in which a box body and an adapter are separated so that the device can be easily installed above the ceiling (see, for example, Patent Document 1).

[0003] A conventional ventilation device will be described with reference to Figures 14 and 15. Figure 14 is a detailed view showing the structure of a conventional ventilation device. Figure 15 is a detailed view showing the structure of another conventional ventilation device.

[0004] The conventional ventilation device shown in Figure 4 is installed on the ceiling of a building or the like, and has a box 101 with an opening on the bottom and an air outlet on one side, and incorporates a blower 102 that creates an airflow from the opening on the bottom to the air outlet.

[0005] The construction of ventilation systems can be broadly classified into two methods: one in which the ventilation system is installed in the attic and then a ceiling plate is attached, and the other in which the ventilation system is attached to an existing ceiling (retrofit).

[0006] In retrofitting, first, the adapter 103 is pre-attached to the ceiling. Then, the box 101 is inserted from the top to the bottom into the pre-attached adapter 103. This allows installation through a small opening in the ceiling. Retrofitting allows ventilation equipment to be added to an existing environment, making it suitable for a variety of situations.

[0007] Also, as a method for correctly engaging a box with a tilted adapter to ensure airtightness, a structure in which guide parts are attached to the side of the box is known (see, for example, Patent Document 2). As shown in Fig. 15, conventional guide part 202 is attached to at least one side of box 201, and is intended to act as a guide when adapter 203 and box 201 are engaged, thereby making it easier to engage them in the desired position. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] JP 2018-21739 A [Patent Document 2] JP 2019-158325 A Summary of the Invention

[0009] However, retrofitting can be difficult if the top plate is thin and weak. The adapter 103, which is pre-attached to the top plate, is connected to a duct that serves as an air passage, so the weight of the duct is applied to the adapter 103. Therefore, if the top plate is thin and weak, the upper end of the adapter 103 will be tilted toward the duct. Furthermore, the box 101 cannot be inserted into the small opening in the top plate while aligning it with the tilt of the duct. This makes it difficult to properly engage the box 101 with the tilted adapter 103.

[0010] Furthermore, even if they can be engaged, as described above, in a retrofit, the adapter 103 and the box body 101 are independent. Therefore, there is a problem in that a gap occurs between the adapter 103 and the box body 101 due to the load of the duct, compromising airtightness.

[0011] As a method for correctly engaging the box with the tilted adapter and ensuring airtightness, the technique of providing the guide parts described above can be applied.

[0012] However, when these structures are adopted, installation becomes difficult. That is, after inserting the box body 201 into the ceiling, it is necessary to attach screws or the like to secure the box body 201 to the ceiling. At this time, at the stage when the box body 201 is inserted into the ceiling, the box body 201 is not fixed to the ceiling in any way. Therefore, the installer needs to insert and support the box body 201 into the ceiling with, for example, only the left hand, while holding, for example, screws and tools with the right hand to perform the work. For this reason, there is also room for improvement in the convenience of installation for the installer.

[0013] The present disclosure aims to provide a ventilation device in which an adapter and a box body are configured independently, with improved airtightness and ease of installation.

[0014] A ventilation device according to one aspect of the present disclosure includes a box having an air inlet on a bottom surface and an air outlet on a side surface different from the bottom surface, a fan case that houses a fan and directs air from the air inlet to the air outlet, and an adapter that is fixed to the side surface on which the air outlet is provided as a member independent of the box. The fan case includes a temporary fixing part for temporarily fixing the box to the adapter.

[0015] According to the present disclosure, in a ventilation device in which the adapter and the box body are configured independently, it is possible to increase airtightness and improve installation ease. [Brief explanation of the drawings]

[0016] [Figure 1] FIG. 1 is a perspective view of a ventilation device according to the present disclosure. [Figure 2] FIG. 2 is a bottom view of the ventilation device. [Figure 3] FIG. 3 is a side perspective view of the adapter. [Figure 4] FIG. 4 is a perspective view of the blower unit. [Figure 5] FIG. 5 is an exploded perspective view of the box body and the blower section. [Figure 6] FIG. 6 is a detailed view showing the connection structure between the through-hole in the side surface of the box and the guide member. [Figure 7]FIG. 7 is a front view and a plan view of the outer guide member. [Figure 8] FIG. 8 is a front view and a plan view of the inner guide member. [Figure 9] FIG. 9 is a cross-sectional perspective view showing the structure of the temporary fixing portion. [Figure 10] FIG. 10 is a perspective cross-sectional view showing the positional relationship between the temporary fixing portion and the engagement opening. [Figure 11] FIG. 11 is a perspective cross-sectional view and a front view showing the positional relationship between the claw portion and the adapter when temporarily fixed. [Figure 12] FIG. 12 is a perspective cross-sectional view and a front view showing the positional relationship between the claw portion and the adapter when fully fixed. [Figure 13] FIG. 13 is a perspective view showing an example of a method for installing a ventilation device on a ceiling. [Figure 14] FIG. 14 is a detailed view showing the structure of a conventional ventilation device. [Figure 15] FIG. 15 is a detailed view showing the structure of another conventional ventilation device. DETAILED DESCRIPTION OF THE INVENTION

[0017] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings to facilitate understanding of the present disclosure. Note that the following embodiments are examples of specific embodiments of the present disclosure and do not limit the technical scope of the present disclosure. Furthermore, the same reference numerals are used to designate the same components throughout the drawings, and subsequent descriptions thereof will be omitted or simplified.

[0018] (Embodiment 1) First, the configuration of ventilation device 30 according to this embodiment will be described with reference to Figs. 1 to 6. Fig. 1 is an exploded perspective view of ventilation device 30 according to this embodiment. Fig. 2 is a bottom view of ventilation device 30. Fig. 3 is a side perspective view of adapter 3. Fig. 4 is a perspective view of blower unit 2. Fig. 5 is an exploded perspective view of box body 1 and blower unit 2. Fig. 6 is a detailed view showing the connection structure between the through hole in the side surface of the box body and the guide member.

[0019] The ventilation device 30 according to the present disclosure includes a box 1, a blower 2, and an adapter 3.

[0020] Box 1 has a box-like shape with at least one side open, and is made of metal or resin. Box 1 is provided with air inlet 4 and air outlet 5. Furthermore, the side of box 1 is provided with through-hole 12a, through-hole 12b, and rectangular through-hole 12c.

[0021] When the ventilation device 30 is installed on the ceiling with its underside flush with the ceiling board, the intake port 4 is provided on a surface facing downward vertically from the ceiling toward the ground. The intake port 4 corresponds to the opening of the box 1. Air is drawn into the box 1 through a decorative panel (not shown).

[0022] The air outlet 5 is provided as an opening on one of the side surfaces adjacent to the bottom surface on which the air inlet 4 is provided. The air outlet 5 is provided so that the entire side surface of the box body 1 is an opening. Note that the only part of the air outlet 5 through which air actually flows is the part corresponding to the air outlet 5b, which is an opening provided in the blower unit 2.

[0023] The air inlet 4 and the air outlet 5 are connected to each other inside the box 1, and this connected air passage forms an exhaust air passage 6.

[0024] The blower unit 2 is disposed in the exhaust air duct 6, and guides air from the intake port 4 to the outlet port 5. The blower unit 2 includes a fan case 7, a motor 8, a fan 9, and a motor support 11.

[0025] Fan case 7 forms the outer shell of blower section 2 and is made of resin. Fan case 7 has a roughly cylindrical shape. An opening for drawing in air is provided on the bottom surface located on the lower surface of fan case 7. In addition, an opening for discharging air is provided on the side surface of fan case 7. Fan case 7 has scroll section 7a, temporary fixing reinforcement section 7b, and blow-out opening plate 31.

[0026] The scroll section 7a is a part of the fan case 7. The opening on the bottom surface of the scroll section 7a is located close to the suction port 4. Furthermore, the outlet 5b on the side surface of the scroll section 7a is located on the same plane as the outlet 5 of the box body 1. The side cross section of the approximately cylindrical scroll section 7a has a circular scroll shape. The scroll section 7a houses the fan 9. An orifice section 15 is provided at the opening on the bottom surface of the scroll section 7a. Furthermore, an outlet opening plate 31 is provided on the side surface of the scroll section 7a that has the outlet 5b.

[0027] The temporary fixing reinforcement portion 7b is a part of the fan case 7 and is provided in contact with a part of the side surface of the scroll portion 7a and the outlet opening plate 31.

[0028] The air outlet plate 31 is a rectangular plate having an opening as the air outlet 5b, and is provided at a position to partially block the air outlet 5 of the box body 1. In the air outlet plate 31, a temporary fixing portion 27 is provided on the side of the air outlet 5b.

[0029] The temporary fixing portion 27 is configured to include a base portion 27a, a claw portion 27b, a disengaging portion 27c, and a reinforcing portion 27d, as shown in FIG. 9, which will be described in detail later.

[0030] The scroll portion 7a and the temporary fixing portion 27 are each part of the fan case 7, but they may be separate components. In this case, the temporary fixing portion 27 is attached to the fan case 7 using fixing means such as screws.

[0031] The motor 8 is, for example, a DC motor with a rotating shaft that protrudes toward the air inlet 4. The motor 8 is disposed on the top surface 1b side in the internal space of the fan case 7 and is attached near the center of the motor support 11 with a fixing means such as a screw. The motor 8 rotates its rotating shaft when power is supplied. Power is supplied to the motor 8 via an electrical circuit board (not shown).

[0032] Fan 9 is, for example, a sirocco fan fixed to a rotating shaft. When motor 8 is started, fan 9 starts as the rotating shaft rotates, and air is moved. In other words, air is guided from air inlet 4 to air outlet 5 by the action of blower unit 2.

[0033] The electrical board case 10 includes an electrical board base 10a made of flame-retardant resin and an electrical board cover 10b made of flame-retardant resin. The electrical board is attached to the electrical board base 10a with fastening means such as screws. The electrical board cover 10b is also attached to the electrical board base 10a with fastening means such as screws.

[0034] The electrical board is housed in an electrical board case 10 and is attached to the side of the fan case 7 close to the outer casing by fixing means such as screws (not shown).

[0035] Motor support 11 forms the outer shell of blower unit 2 and is made of metal or resin. Motor support 11 is arranged on top surface 1b side in the internal space of fan case 7 and is attached to fan case 7 with fixing means such as screws.

[0036] Orifice section 15 is formed at intake port 4 of fan case 7, has a cylindrical shape, and is open in the center. Orifice section 15 is located upstream of blower section 2 when viewed from the direction of air flow, and is made of resin. Note that orifice section 15 may be a separate component from fan case 7. If orifice section 15 is a separate component from fan case 7, it is attached to the opening of fan case 7 and the bottom surface of the component opening with fixing means such as screws.

[0037] Fan case 7 is attached to box body 1 below the center in the height direction of box body 1 using fixing means such as screws. In this embodiment, it is attached to box body 1 via a connecting member (not shown). Note that a configuration in which motor support 11 is attached to box body 1 instead of fan case 7 may also be used.

[0038] The adapter 3 is provided on one side of the box 1, downstream of the air outlet 5. The adapter 3 includes an adapter plate 13, a duct connection portion 14, a power supply connection portion 16, and an engagement opening .

[0039] The adapter plate 13 is a flat plate having approximately the same size as one side surface of the box 1, and is made of metal or resin. The adapter plate 13 is provided on the downstream side of the side surface of the box 1 on which the air outlet 5 is provided. A guide receiving portion 13a is provided on at least one side surface of the adapter plate 13. In this embodiment, the guide receiving portions 13a are provided on both side surfaces of the adapter plate 13.

[0040] As shown in Fig. 3, the guide receiving portion 13a is formed, for example, by bending the side surface of the adapter plate 13 twice at one location. The guide receiving portion 13a extends from the side edge that is the end of the flat surface of the adapter plate 13 in the direction of the adjacent side surface 1a, parallel to the adjacent side surface 1a, and further extends from the tip of the extension toward the adjacent side surface 1a. In other words, the guide portion 3a has a concave shape 17 when viewed from above the adapter 3 (as viewed from above in Fig. 1).

[0041] The guide portion 3a guides the box body 1 to the adapter 3 by bringing the guide member 21 provided on the adjacent side surface 1a into contact with the inner peripheral wall of the recess in the recessed shape 17 and guiding it in the up and down direction. In other words, the sliding structure between the guide receiving portion 13a and the guide member 21 allows the box body 1 to guide the adapter 3 in the up and down direction, and at the same time, movement of the air outlet 5 in the near and far directions is suppressed.

[0042] The duct connector 14 extends from the adapter plate 13 toward the downstream side. The upstream side of the duct connector 14 is rectangular, and the downstream side of the duct connector 14 is cylindrical. The duct connector 14 is made of metal or resin. The internal space of the duct connector 14 is connected to the air outlet 5 and guides the exhaust air blown out from inside the box 1. The duct connector 14 is connected to, for example, the indoor end of a duct connecting the indoors and outdoors, allowing the exhaust air from the ventilation device 30 to be discharged outdoors. In this embodiment, the upstream rectangular portion of the duct connector 14 is fitted and engaged with the adapter plate 13. However, the duct connector 14 may be fixed to the adapter plate 13 by adhesive bonding, screws, or other methods, and the adapter plate 13 and the duct connector 14 may be the same part.

[0043] The power supply connector 16 stands upright facing downstream from the adapter plate 13 and has a power supply connector base 16a and a power supply connector cover 16b. When installing the ventilation device 30, connecting the power supply wiring on the indoor side inside the power supply connector 16 enables the ventilation device 30 to be connected to a power source.

[0044] The power supply connection base 16a is a rectangular box with at least one open side, and is made of metal.

[0045] The power supply connection cover 16b is a rectangular box with at least one side open, and is made of metal.

[0046] In this embodiment, the adapter plate 13, the power supply connection base 16a, and the power supply connection cover 16b are attached using fixing means such as screws (not shown).

[0047] The engagement opening 28 is a rectangular opening machined into a part of the adapter plate 13, and has a sliding space 29 (see FIG. 12) between it and a claw portion 27b described later, the details of which will be described later.

[0048] The center of gravity of the ventilation device 30 is closer to the adapter 3, i.e., closer to the air outlet 5, than the center of the box body 1. In other words, the rotation shaft of the motor 8, which is a particularly heavy object, is located closer to the adapter 3 than the center of the box body 1. This is expected to have the effect of causing the claw portion 27b to fall toward the adapter 3.

[0049] Next, the guide member will be described in detail with reference to Figures 6, 7, and 8. Figure 6 is a detailed view showing the connection structure between through hole 12a, through hole 12b, rectangular through hole 12c, and guide member 21. Figure 7 is a front view and a plan view of the outer guide member. Figure 8 is a front view and a plan view of the inner guide member.

[0050] The box body 1 is provided with a through hole 12a, a through hole 12b, a rectangular through hole 12c, and a guide member 21 near the air outlet 5 on the adjacent side surface 1a.

[0051] The through-hole 12a is a substantially circular opening formed at the end of the adjacent side surface 1a of the box 1 on the air outlet 5 side.

[0052] The through-hole 12b is a substantially circular opening formed at the end of the adjacent side surface 1a of the box body 1 on the air outlet 5 side.

[0053] The rectangular through-hole 12c is a rectangular opening provided at the end of the adjacent side surface 1a of the box 1 on the air outlet 5 side.

[0054] The guide member 21 has an outer guide member 21a and an inner guide member 21b.

[0055] The outer guide member 21a is made of a resin having elasticity, and has a configuration in which it passes through the rectangular through-hole 12c from the outer periphery side of the box body 1. Most of the shape of the outer guide member 21a is located on the outer periphery side of the box body 1.

[0056] The outer guide member 21a includes a bulge 22, a claw-shaped portion 23, a hole-shaped portion 24a, and a hole-shaped portion 24b.

[0057] The bulging portion 22 is shaped so that the center of the long side of the rectangular shape bulges outward from the adjacent side surface 1 a in an arched shape, and engages with the recessed shape 17 of the adapter plate 13 .

[0058] The claw-like portions 23 protrude from both ends of the long side of the bulging portion 22 toward the opposite side to the bulging portion 22. The claw-like portions 23 pass through rectangular through-holes 12c in the adjacent side surface 1a and engage with the inner guide member 21b. The claw-like portions 23 are symmetrical in the longitudinal direction with respect to the central axis of the outer guide member 21a, and extend from positions eccentric to one side of the central axis in the lateral direction.

[0059] The hole-shaped portion 24a is an opening for engaging with the inner guide member 21b, and has a diameter substantially the same as that of the through-hole 12a.

[0060] The hole shape 24b is an opening for engaging with the inner guide member 21b. The diameter of the hole shape 24b is approximately the same as that of the through-hole 12b.

[0061] The internal guide member 21b is made of a resin having elasticity, has a shape that passes through the through holes 12a and 12b from the inner periphery side of the box body 1, and is located on the inner periphery side of the box body 1.

[0062] The inner guide member 21b includes a rectangular hole shape 25, a shaft shape 26a, and a shaft shape 26b.

[0063] The rectangular hole shape 25 is a hole shape that engages with the claw-shaped portion 23 of the outer guide member 21a.

[0064] The shaft shape 26a passes through the through hole 12a in the adjacent side surface 1a and engages with the outer guide member 21a.

[0065] The shaft shape 26b passes through the through hole 12b of the adjacent side surface 1a and engages with the outer guide member 21a.

[0066] Next, the details of temporary fixing portion 27 will be described with reference to Figures 9 and 10. Figure 9 is a cross-sectional perspective view showing the structure of the temporary fixing portion. Figure 10 is a cross-sectional perspective view showing the positional relationship between temporary fixing portion 27 and engagement opening 28 when engaged. However, for the sake of explanation, reinforcing portion 27d is not shown in Figure 10.

[0067] The temporary fixing portion 27 includes a base portion 27a, a claw portion 27b, a disengaging portion 27c, and a reinforcing portion 27d.

[0068] The base 27a has a rectangular plate shape and is arranged in the temporary fixing part opening provided in the air outlet plate 31 along the plane of the air outlet plate 31. By connecting one end of the base 27a to one side of the temporary fixing part opening, the base 27a is arranged parallel to the air outlet 5 and has elasticity in the directions toward and away from the air outlet 5 (the plane of the air outlet plate 31).

[0069] Claw portion 27b is provided on the tip side opposite to the position (connection side) where it is connected to one side of the temporary fixing portion opening of base portion 27a, and in a cross-sectional view, it protrudes toward the outside of air outlet 5. Claw portion 27b has a flat portion 32 on the lower side that protrudes from base portion 27a toward the outside of air outlet 5 in the up-down direction of ventilation device 30, and is provided with an inclined portion 33 that gradually inclines toward the flat surface of air outlet plate 31 as it goes upward.

[0070] The flat surface portion 32 engages with an engagement opening 28 provided in the adapter plate 13 when the fan case 7 fixed to the box body 1 is attached to the adapter 3.

[0071] The disengaging portion 27c is located on the tip side of the base portion 27a and protrudes toward the inside of the air outlet 5 in a cross-sectional view. In other words, the disengaging portion 27c protrudes on the opposite side from the claw portion 27b, with the base portion 27a as the center. The disengaging portion 27c protrudes linearly from the base portion 27a toward the scroll portion 7a. A space is provided between the disengaging portion 27c and the scroll portion 7a so that the user can operate the disengaging portion 27c.

[0072] Disengaging portion 27c is located closer to the top surface than air inlet 4. Therefore, disengaging portion 27c does not obstruct the airflow sucked in from air inlet 4 when ventilation device 30 is in operation, and does not adversely affect ventilation performance.

[0073] Reinforcing portion 27d has a triangular plate shape and is arranged on the tip side of base portion 27a, on the connection side of disengaging portion 27c. Reinforcing portion 27d protrudes toward the inside of air outlet 5, that is, toward scroll portion 7a. Due to this shape and arrangement, reinforcing portion 27d does not obstruct the airflow sucked in from air inlet 4 when ventilation device 30 is in operation, and does not adversely affect ventilation performance.

[0074] The function of the reinforcing portion 27d is to suppress deformation due to operation of the disengagement portion 27c by the user or due to its own weight, thereby suppressing unintentional disengagement between the temporary fixing portion 27 and the engagement opening 28. The engagement between the temporary fixing portion 27 and the engagement opening 28 will be described later. When the user operates the disengagement portion 27c, the blow-out opening plate 31 tends to bend toward the scroll portion 7a, but the temporary fixing reinforcing portion 7b prevents the scroll portion 7a and the blow-out opening plate 31 from approaching each other.

[0075] Next, an example of the procedure for installing the ventilation device on a ceiling will be described with reference to Figures 11, 12, and 13. Figure 11 is a perspective cross-sectional view and a front view showing the positional relationship between the claws and the adapter when temporarily fixed. Figure 12 is a perspective cross-sectional view and a front view showing the positional relationship between the claws and the adapter when permanently fixed. Figure 13 is a perspective view showing an example of how to install the ventilation device on a ceiling.

[0076] When installing the ventilation device 30 in the ceiling of a building, first the adapter 3 is fixed to a frame that has been installed in advance in the ceiling opening using screws or the like, as shown in Figure 13. Next, with the fan case 7 stored in the box 1, the box 1 is attached from below to the adapter 3 installed in the ceiling opening using screws or the like.

[0077] When the box body 1 is attached to the adapter 3, the guide member 21 provided on the side of the box body 1 engages with the guide receiving portion 13a of the adapter 3 and slides upward. This prevents a gap from forming between the adapter 3 and the box body 1 when the box body 1 is inserted into the building ceiling. In other words, the temporary fixing portion 27 engages with the engagement opening 28 while maintaining airtightness.

[0078] When the claw portion 27b is inserted into the engagement opening 28, the tip of the inclined portion 33 first contacts the outlet opening plate 31 of the adapter 3, and then the base portion 27a elastically deforms toward the inside of the air outlet 5 along the inclination of the inclined portion 33. As the claw portion 27b continues to be inserted, the claw portion 27b climbs over the engagement opening 28. When the flat portion 32 reaches the bottom end of the engagement opening 28, the elastic deformation of the base portion 27a is released and it returns to its original position. As a result, the claw portion 27b penetrates the engagement opening 28 and protrudes toward the adapter 3. In this state, that is, when the claw portion 27b is temporarily fixed by being hooked onto the adapter 3, the box 1 is temporarily fixed to the ceiling with the flat portion 32 in contact with the bottom edge of the engagement opening 28 as shown in FIG. 11 without the need for support from an installer or the like.

[0079] 12, the sliding space 29 is a gap formed between the flat portion 32 and the bottom of the engagement opening 28. The height dimension of the engagement opening 28 is slightly larger than the height of the claw portion 27b. More preferably, the engagement opening 28 is an opening that is 3 mm to 10 mm larger in the vertical direction than the height of the claw portion 27b.

[0080] When temporarily fixed, the bottom side of the engagement opening 28 comes into contact with the flat surface 32 of the claw portion 27b. Therefore, the height of the lower sliding space 29 is approximately zero. Meanwhile, an upper sliding space is formed between the tip of the claw portion 27b and the upper side of the engagement opening 28. Since the engagement opening 28 is, for example, 3 mm to 10 mm larger in the height direction than the temporary fixing portion 27, the box 1 is temporarily fixed to the adapter 3 in a state where it has dropped 3 mm to 10 mm from its normal position.

[0081] In other words, in the temporarily fixed state, the box body 1 is dropped from the ceiling surface by 5 mm relative to the adapter 3. This allows the installer to easily determine that the state is temporarily fixed, reducing the risk of forgetting to install screws or the like to permanently fix the box body 1.

[0082] The box body 1, which is in a provisionally fixed state, is fixed to the upper frame body from below with screws or the like, thereby bringing the box body 1 and the adapter 3 into the permanently fixed state shown in FIG. 12. In this case, the screw holes in the frame body form the permanently fixed part. When the ventilation device 30 is permanently fixed, the bottom of the engagement opening 28 and the flat surface 32 of the claw portion 27b are not in contact, and a sliding space 29 of 3 mm to 10 mm is secured. The ventilation device 30 is used in this permanently fixed state. No load is applied to the claw portion 27b when the ventilation device 30 is permanently fixed.

[0083] As described above, while temporary fixation is possible, by providing sliding space 29, the installer can clearly determine that ventilation device 30 is in a temporarily fixed state. Therefore, compared to when no sliding space exists, ventilation device 30 is left in a temporarily fixed state and is not exposed to the risk of falling off.

[0084] Furthermore, during maintenance such as cleaning, the ventilation device 30 is temporarily fixed by removing the permanently fixing screws from the permanently fixed state of the ventilation device 30. When the ventilation device 30 is temporarily fixed, the box body 1 falls down to a position where the bottom of the engagement opening 28 and the flat surface 32 of the claw portion 27b come into contact with each other.

[0085] From this state, the worker can, for example, support box body 1 with his / her right hand and pinch and pull downward disengagement portion 27c with his / her left hand, causing temporary fixing portion 27 to deform due to its elasticity, thereby disengaging temporary fixing portion 27 from engagement opening 28. This allows the worker to remove box body 1 safely and easily. [Industrial Applicability]

[0086] INDUSTRIAL APPLICABILITY The ventilation device according to the present disclosure is useful as a ventilation device in which the adapter and the box body are configured independently, as it can improve installation ease and increase airtightness. [Explanation of symbols]

[0087] 1 box body 1a Adjacent side 1b Top 3 Adapters 3a Guide part 4 Intake port 5, 5b Air outlet 6 Exhaust air duct 7 Fan case 8 motors 9 Fans 10 Electrical board case 11 Motor Support 12a, 12b through hole 12c rectangular through hole 13 Adapter plate 13a Guide receiving part 14 Duct connection 15 Orifice section 16 Power connection 16a Power Connection Base 16b Power connection cover 17 Concave shape 21 Guide member 27 Temporary fixing part 28 Engagement opening 29 Sliding Space 30 Ventilation equipment 31 Air outlet plate 32 Plane part 101 Box body 103 Adapter 201 Box body 203 Adapter

Claims

1. A box body having an intake port on a bottom surface and an outlet port on a side surface different from the bottom surface; a fan case that houses a fan and guides air from the air inlet to the air outlet; an adapter fixed to the side surface on which the air outlet is provided as a member independent of the box body, The fan case includes: a temporary fixing portion for temporarily fixing the box body to the adapter; The temporary fixing portion is The box body is temporarily fixed to the adapter in a slidable manner while the box body is engaged with the adapter; The temporary fixing portion is a base provided in the fan case parallel to the side surface and having elasticity in a direction away from and toward the side surface; a claw portion provided on the base, protruding toward the adapter, and inserted into an engagement opening provided in the adapter as the fan case slides relative to the adapter; The engagement opening is a sliding space that allows the claw portion to move within the engagement opening in a sliding destination direction and a sliding origin direction when the claw portion is inserted; Ventilation equipment.

2. The housing further includes a permanent fixing portion that fixes the housing from a state in which the housing is slidable relative to the adapter by the temporary fixing portion to a state in which the housing is not slidable relative to the adapter.

2. The ventilation system of claim 1.

3. The temporary fixing portion is a disengagement portion that protrudes from the base toward the opposite side of the claw portion and is operable to deform the base in a direction to disengage the claw portion from the engagement opening; 2. The ventilation system of claim 1.

4. The disengaging portion is provided closer to the top surface than the suction opening on the bottom surface side of the fan case.

4. The ventilation system of claim 3.

5. The center of gravity of the box body is located closer to the air outlet side.

2. The ventilation system of claim 1.

6. The rotation axis of the fan is disposed close to the air outlet.

6. The ventilation system of claim 5.

7. the box body has a guide portion on an adjacent side surface adjacent to the side surface, the guide portion guiding the adapter from the bottom surface toward a top surface opposite the bottom surface; 2. The ventilation system of claim 1.

8. The temporary fixing portion has a reinforcing portion that suppresses deformation of the disengaging portion.

4. The ventilation system of claim 3.

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