JP2011021766A - Ion delivery device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an ion delivery device capable of being easily maintained. <P>SOLUTION: This ion delivery device is provided with a body 10 mounted in a ceiling wall A, a front panel 2 covering the body 10 and having an inlet port 3 and an outlet port 4, a ventilation duct 12 for interconnecting the inlet port 3 and the outlet port 4, a ventilation fan 11 disposed inside the ventilation duct 12, an ion generating device 20 having electrode sections 25, 26 generating ions, an operating button 5 disposed on one end of the front panel 2 in a horizontally movable manner, biased in the direction of protruding from the front panel 2, and having an upwardly-protruding claw 5a, a torsion spring 6 having a locking section 6a protruding outward at the end extending in a V-shape from a supporting section freely attached at the opposite end of the front panel 2, a first engaging member 10c disposed on the body 10, and engaged with the horizontally-moving claw 5a, and a second engaging member 18a disposed on the body 10, and inserted to the end of the torsion spring 6 to be engaged with the vicinity of the supporting section by means of elasticity of the torsion spring 6. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an ion delivery device for delivering ions into a living room.

  A conventional ion delivery device is disclosed in Patent Document 1. This ion delivery device has a main body part arranged on a ceiling wall of a living room, and a suction port and an air outlet open on the lower surface of the main body part facing the living room. A blower passage that connects the suction port and the blower outlet is provided in the main body, and a blower fan is disposed in the blower passage. Further, an ion generator that generates ions facing the air passage is provided above the main body. The ion generator applies ions to the electrodes to generate ions by discharge.

  When the blower fan is driven, air in the room flows into the blower passage from the suction port. Ions generated by the ion generator are mixed in the air flowing through the air passage, and air containing ions is sent out from the outlet. Thereby, negative ions can be sent into the living room to reduce the active oxygen in the human body.

  Since an ion generator that generates ions is applied with a high voltage, it deteriorates due to long-term use. At this time, since the ion generator is disposed above the main body, it is necessary to remove the main body from the ceiling together with the ion generator when replacing the deteriorated ion generator. For this reason, there is a problem that maintenance becomes difficult.

  In order to solve the above problem, an ion delivery device is known in which an ion generator is detachable from an opening surface of a main body. This ion delivery device is fixed to the front surface of the main body by, for example, screwing the opposite end of the front panel having the suction port and the air outlet. A holding unit for holding the ion generator is provided in the main body. The holding portion has an engaging claw, and the engaging claw engages with the lower surface of the ion generating device inserted into the holding portion to prevent the ion generating device from falling.

  When detaching the ion generator, the front panel covering the main body is removed, and the operator removes the engaging claw from the lower surface of the ion generator while holding the ion generator with fingers. Thereby, an ion generator can be replaced | exchanged.

Japanese Patent Application Laid-Open No. 2004-309047 (page 3 to page 5, FIG. 2)

  However, the conventional ion delivery device has a problem in that workability is poor because the front panel needs to be removed when the ion generator is replaced. Further, when removing the front panel, there is a danger of dropping from the operator's hand and falling onto the operator's head.

  An object of this invention is to provide the ion sending apparatus which can improve the workability | operativity and safety | security at the time of replacement | exchange of an ion generator.

In order to achieve the above object, the present invention is provided in a main body part that is attached to a ceiling wall of a living room, a front panel that covers a lower surface of the main body part and that has an inlet and an outlet, and is provided in the main body part. A blower passage that communicates the suction port with the blowout port, a blower fan that is disposed in the blower passage, and an ion generator that includes an electrode unit that generates ions. In the ion delivery device that mixes the ions generated in the electrode part to the air in the room flowing into the air passage from the suction port and sends out from the blowout port,
An operation button provided at one end of the front panel so as to be horizontally movable and biased in a direction protruding from the front panel and having a claw protruding upward, and a fulcrum attached to the other end of the front panel A torsion spring having a locking portion protruding outward at a tip extending in a V shape from the portion; a first engagement member provided on the main body portion for engaging the claw portion that moves horizontally; and And a second engagement member that is inserted through the tip of the torsion spring and engages with the vicinity of the fulcrum portion by the elasticity of the torsion spring.

  According to this structure, the front panel which has a suction inlet and a blower outlet is distribute | arranged to the front surface of a main-body part, and if a ventilation fan is driven, the air in a living room will flow in into the ventilation path in a main-body part from a suction inlet. Ions generated at the electrode part are mixed with the air flowing through the air passage, and air containing the ions is sent out from the outlet. The front panel is attached with claw portions and torsion springs that are respectively engaged with first and second engaging portions provided on the main body portion, arranged at both ends. The claw portion is provided on an operation button that is urged in a direction protruding from the front panel, and is slidably engaged with the first engagement portion by the urging. The torsion spring extends in a V shape from a fulcrum portion attached to the front panel. When the front end of the torsion spring is closed and inserted through the second engagement portion and the front panel is pushed in, the torsion spring expands elastically above the second engagement portion and engages with the second engagement portion. When performing maintenance of the main body, the claw part is detached from the first engaging part by pressing the operating part, and when the front panel is pulled out, the locking part at the tip of the torsion spring is locked to the second engaging part. Is done. As a result, the front panel is opened and suspended by the torsion spring.

  According to the present invention, in the ion delivery device configured as described above, the upper end of the peripheral surface of the front panel is chamfered. According to this configuration, a shadow is formed around the front panel by chamfering, and it is difficult to see the gap between the front panel and the ceiling wall, so that the aesthetics of the ion delivery device can be improved.

  According to the present invention, in the ion delivery device configured as described above, the sliding contact surface that is in sliding contact with the first engaging member of the claw portion is an inclined surface. According to this configuration, the slidable contact surface formed by the inclined surface of the claw portion urges the first engagement member, and the front panel is pulled upward. Thereby, generation | occurrence | production of the clearance gap between a front panel and a ceiling wall can be prevented, and the aesthetics of an ion sending apparatus can be improved.

  According to the present invention, the front panel has a claw portion and is provided with an operation button that horizontally moves at one end, and a torsion spring is loosely attached to the other end, and engages with the claw portion and the torsion spring, respectively. Since the engaging member is provided in the main body, the front panel can be easily opened by pressing the operation button. Further, when the front panel is opened, it can be separated from the opening surface of the main body according to the length of the torsion spring. Thereby, workability at the time of replacement | exchange of an ion generator can be improved, without a front panel becoming obstructive. In addition, when the front panel is opened, it is suspended by a torsion spring and does not fall, so that safety can be improved.

The perspective view which shows the attachment state of the ion sending apparatus of embodiment of this invention. Side surface sectional drawing which shows the attachment state of the ion sending apparatus of embodiment of this invention The exploded perspective view seen from the front side of the ion sending device of the embodiment of the present invention The exploded perspective view seen from the back side of the ion sending device of the embodiment of the present invention Side surface sectional drawing which shows the state which opened the front panel of the ion sending apparatus of embodiment of this invention The disassembled perspective view which shows the ion generator of the ion sending apparatus of embodiment of this invention

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing an attachment state of an ion delivery device 1 according to an embodiment. The ion delivery apparatus 1 is attached to the ceiling wall A of a living room, and the front panel 2 which covers the front surface is arranged facing the living room. A suction port 3 is opened at the center of the front panel 2, and an air outlet 4 is provided around the suction port 3.

  FIG. 2 shows a side sectional view of the ion delivery device 1. 3 and 4 show an exploded perspective view of the ion delivery device 1 seen from the front and an exploded perspective view seen from the back. The ion delivery device 1 has a main body portion 10 attached to the ceiling wall A, and an opening on the front surface of the main body portion 10 is covered with the front panel 2. In the main body 10, an inner case 18 made of a resin molded product is attached inside a metal outer case 10a, and the opening side periphery of the outer case 10a is screwed to the ceiling wall A.

  An engagement member 10c (first engagement member) having an engagement hole 10b is attached to one end of the outer case 10a. An operation button 5 that moves horizontally is provided at one end of the front panel 2. The operation button 5 is urged in a direction protruding from the front panel 2. A claw portion 5a having an L-shaped section is provided at the rear end of the operation button 5 so as to protrude upward and engage with the engagement member 10c through the engagement hole 10b.

  An engaging member 18a (second engaging member) integral with the inner case 18 having an insertion hole (not shown) is disposed at the other end of the outer case 10a. A fulcrum portion of a V-shaped torsion spring 6 is loosely attached to the other end of the front panel 2. At the tip of the torsion spring 6, a locking portion 6a that protrudes outward and is wound is formed.

  The front panel 2 is inserted through the insertion hole of the engagement member 18a with the tip of the torsion spring 6 closed, and the claw portion 5a of the operation button 5 is engaged with the engagement hole 10b of the engagement member 10c. Attached to. At this time, the torsion spring 6 spreads by an elastic force above the engaging member 18a, and the joined state between the front panel 2 and the main body 10 is maintained.

  By pressing the operation button 5, the claw portion 5a is detached from the engagement hole 10c, and the front panel 2 is pulled out. Thereby, as shown in FIG. 5, the locking portion 6 a is locked to the engaging member 18 a, and the front panel 2 is suspended by the torsion spring 6.

  The front panel 2 is held at the other end by the torsion spring 6 that is engaged at one end by the claw portion 5a of the operating portion 5 that moves horizontally and spreads above the engaging member 18a. Can be opened easily. Further, when the front panel 2 is opened, the front panel 2 can be separated from the opening surface of the main body 10 according to the length of the torsion spring 6. Thereby, the front panel 2 does not get in the way and the maintenance in the main-body part 10 can be performed easily.

  Further, the claw portion 5a of the operation button 5 presses the front panel 2 upward to be inserted into the engagement hole 10b, and slides on the engagement member 10c to engage with the engagement hole 10b. Therefore, a vertical gap is formed between the upper surface of the front panel 2 and the ceiling wall A. A chamfer 2b is applied to the upper end of the peripheral surface 2a of the front panel 2. A shadow is formed on the ceiling wall A around the front panel 2 by the chamfer 2b, and the gap between the front panel 2 and the ceiling wall A can be made inconspicuous. Therefore, the aesthetics of the ion delivery device 1 can be improved.

  In addition, you may make the sliding surface of the nail | claw part 5a which slidably contacts with the engaging member 10c into an inclined surface. As a result, when the claw portion 5a inserted into the engagement hole 10b is urged in the horizontal direction, the sliding contact surface composed of the inclined surface slides into contact with the edge of the engagement hole 10b and pulls the front panel 2 upward. Thereby, the clearance gap between the front panel 2 and the ceiling wall A can be eliminated, and the aesthetics of the ion sending device 1 can be improved.

  The inner case 18 forms an upper part of the blower passage 12 that connects the suction port 3 and the blower outlet 4, and holds the blower fan 11 in the blower passage 12. The blower fan 11 is an axial fan, and is arranged with the intake side facing the suction port 3. The air passage 12 is formed to extend from the exhaust side on the back surface of the air fan 11 to the outlet 4 through the periphery of the air fan 11.

  A grill 30 made of a resin molded product is disposed on the front surface of the inner case 18. The grill 30 is provided with openings 33 and 34 that face the inlet 3 and the outlet 4. A partition rib 30 a is projected from the upper surface of the grill 30. The lower part of the ventilation path 12 is formed of the partition rib 30a. Further, the partition rib 30 a forms a plurality of branch passages 12 a that branch the blower passage 12 on the exhaust side of the blower fan 11 in the peripheral portion of the main body 10. In the present embodiment, four branch passages 12a are formed.

  In the grill 30, clips 37 are projected from two locations opposite to each other between the branch passages 12 a outside the blower fan 11. The clip 37 is elastically deformed to engage with the protruding rib 17 protruding from the inner case 18, and the grill 30 is held by the main body 10. When the tips of the clips 37 are tilted toward each other due to elasticity, the engagement between the clips 37 and the protruding ribs 17 is released. As a result, the tip of the clip 37 can be gripped with fingers and the grill 30 can be removed from the main body 10, and maintenance inside the main body 10 can be easily performed.

  The inner case 18 is provided with two holding portions 13 facing the air passage 12 and holding the two ion generators 20 facing each other. The holding unit 13 includes a back surface portion 13 a that supports the back surface of the ion generator 20 and an engaging claw 13 b that is disposed on the front side of the ion generator 20 and engages the bottom surface. When the ion generating device 20 is inserted along the back surface portion 13a, the engaging claw 13b is elastically deformed in a direction perpendicular to the inserting direction and is engaged with the lower surface of the ion generating device 20. Thereby, the ion generator 20 is prevented from falling and is held.

  FIG. 6 shows an exploded perspective view of the ion generator 20. The ion generator 20 is formed by covering the front side and the back side of the ion generating element 24 with covers 21 and 22, respectively. The covers 21 and 22 are joined by engagement between an engagement hole 21c provided on the peripheral surface and an engagement protrusion 22c.

  The ion generating element 24 has electrode portions 25 and 26 that generate ions. The cover 21 on the front side is provided with holes 21d and 21e facing the electrode portions 25 and 26. The electrode portions 25 and 26 are provided apart from each other by a predetermined distance, and have needle-like discharge electrodes 25a and 26a and annular induction electrodes 25b and 26b arranged around the discharge electrodes 25a and 26a, respectively.

A high positive voltage is applied to the discharge electrode 25a with respect to the induction electrode 25b, and a high negative voltage is applied to the discharge electrode 26a with respect to the induction electrode 26b. Thereby, water in the air is mainly ionized between the discharge electrode 25a and the induction electrode 25b by corona discharge, and H ⁺ ions are generated. Further, between the discharge electrode 26a and the induction electrode 26b, oxygen in the air is mainly ionized by corona discharge to generate O ₂ ⁻ ions.

H ⁺ ions generated by ionization from the electrode part 25 combine with moisture in the air to form positively clustered ions composed of H ⁺ (H ₂ O) m. O ₂ ⁻ ions generated by ionization from the electrode portion 26 are combined with moisture in the air to form cluster ions having a negative charge composed of O ₂ ⁻ (H ₂ O) n. Here, m and n are arbitrary natural numbers. Accordingly, the electrode portion 25 constitutes a positive ion portion that generates positive ions, and the electrode portion 26 constitutes a negative ion portion that generates negative ions.

H ⁺ (H ₂ O) m and O ₂ ⁻ (H ₂ O) n agglomerate on the surface of airborne bacteria, odorous components, and adhering bacteria in the storage, and surround them. Then, as shown in the formulas (1) to (3), active species [.OH] (hydroxyl radicals) and H ₂ O ₂ (hydrogen peroxide) are agglomerated and produced on the surface of a microorganism or the like by collision. Destroy airborne bacteria and odor components. Here, m ′ and n ′ are arbitrary natural numbers. Accordingly, by generating positive ions mainly composed of H ⁺ (H ₂ O) m and negative ions mainly composed of O ₂ ⁻ (H ₂ O) n and sending them out from the outlet 4, sterilization and odor removal in the room can be performed. It can be carried out.

H ⁺ (H ₂ O) m + O ₂ ⁻ (H ₂ O) n → OH + 1 / 2O ₂ + (m + n) H ₂ O (1)
_{^{H + (H 2 O) m}} + H + (H 2 O) m '+ O 2 - (H 2 O) n + O 2 - (H 2 O) n'
→ 2 OH + O ₂ + (m + m ′ + n + n ′) H ₂ O (2)
_{^{H + (H 2 O) m}} + H + (H 2 O) m '+ O 2 - (H 2 O) n + O 2 - (H 2 O) n'
→ H ₂ O ₂ + O ₂ + (m + m ′ + n + n ′) H ₂ O (3)

  The inner edges of the holes 21d and 21e of the cover 21 are arranged on the inner side of the annular induction electrodes 25b and 26b, and the holes 21d and 21e are formed smaller than the induction electrodes 25b and 26b. This prevents the discharge electrodes 25a and 26a and the induction electrodes 25b and 26b from being in contact with fingers when the ion generator 20 is held. Therefore, it is possible to prevent the ion generating element 24 from being deteriorated due to foreign matters adhering to each electrode.

  The ion generating element 24 includes the discharge electrodes 25a and 26a and the annular induction electrodes 25b and 26b, but may have other configurations. For example, the induction electrode may be omitted or a flat discharge electrode may be provided.

  The electrode part 25 for generating positive ions and the electrode part 26 for generating negative ions are respectively arranged facing different branch passages 12a. Thereby, the extinction by the collision with a positive ion and a negative ion can be reduced, and the reduction | decrease of the ion sent out from the blower outlet 4 can be prevented.

  Moreover, the electrode part 25 of the two ion generators 20 is opposingly arranged on one diagonal of the main-body part 10, and the electrode part 26 of the two ion generators 20 is opposingly arranged on the other diagonal. Thereby, positive ions and negative ions can be dispersed and sent from the ion delivery device 1 to uniformly sterilize and deodorize the room.

  A terminal 24 a that is electrically connected to the electrode portions 25 and 26 is provided on the ion generating element 24. A connector 23 is connected to the terminal 24a via a lead wire 27 arranged in the covers 21 and 22.

  The connector 23 is provided with columnar portions 23b at two locations, and an annular groove 23a is formed on the peripheral surface of the columnar portion 23b. The support portions 21a and 22a of the covers 21 and 22 are formed with U-shaped cutout portions 21b and 22b (21b not shown) that fit into the groove portion 23a. The groove 23a of the connector 23 is sandwiched by the notches 21b and 22b of the support portions 21a and 22a, and the connector 23 is held by the covers 21 and 22 with the tip protruding. At this time, a radial gap is formed between the groove 23a and the notches 21b and 22b, and the connector 23 is loosely attached so that it can tilt between the front side and the back side.

  When the ion generator 20 is inserted along the back surface portion 13 a of the holding portion 13, the connector 23 is inserted into the power supply terminal portion 19 (see FIG. 2) provided in the main body portion 10. At this time, since the connector 23 is loosely attached to the covers 21 and 22, the connector 23 can be reliably inserted into the terminal portion 19 even when the ion generator 20 is tilted when inserted into the holding portion 13.

  Further, a guide groove 22d (see FIG. 4) extending in the insertion direction into the holding portion 13 is formed in the cover 22 on the back side. A guide protrusion 13c (see FIG. 3) that fits in the guide groove 22d is provided on the back surface portion 13a of the holding portion 13. By guiding the guide protrusion 13c, the inclination in the direction along the back surface 13a of the ion generator 20 can be reduced, and the ion generator 20 can be easily inserted along the back surface 13a. Accordingly, the connector 23 can be more reliably inserted into the terminal portion 19.

  A groove 21f is recessed in the surface of the cover 21 on the front side. The groove portion 21f is provided on a locus along which the engaging claw 13b (see FIG. 2) slides when the ion generator 20 is inserted into the holding portion 13. When the engaging claw 13b engaged with the lower surface of the ion generator 20 is detached and the ion generating device 20 is taken out, the engaging claw 13b slides on the cover 21 and engages with the groove 21f.

  At this time, since the groove 21f is recessed in the surface of the case 21, the engaging claw 13b engages with the groove 21f with an engagement depth shallower than the lower surface of the ion generator 20. The inner peripheral surface of the groove 21f is formed as a flat or curved inclined surface. Thereby, the ion generator 20 can be further pulled out and removed from the state in which the engaging claw 13b is engaged with the groove 21f.

  In the ion delivery device 1 configured as described above, when the blower fan 11 is driven, air in the room flows into the blower passage 12 from the suction port 3. The air flowing into the blower passage 12 branches into a plurality of branch passages 12 a on the exhaust side of the blower fan 11. Positive air and negative ions generated by the ion generator 20 are mixed in the air flowing through each branch passage 12a. And the air containing an ion is sent out from the blower outlet 4 provided in the peripheral part of the front panel 2. FIG. Thereby, sterilization and deodorization of a living room can be performed.

  When the driving time of the ion generator 20 has passed a predetermined time, the user is notified by a display or the like on the remote controller so as to prompt the user to replace the ion generator 20. The operator presses the operation button 5 to release the engagement between the claw portion 5a and the engaging member 10c, and pulls out the front panel 2 that rotates with the torsion spring 6 as a fulcrum. Thereby, the latching | locking part 6a of the torsion spring 6 is latched by the engaging member 18a, and the front panel 2 is suspended.

  Next, the both clips 37 of the grill 30 are gripped with fingers, the engagement between the clips 37 and the protruding ribs 17 is released, and the grill 30 is removed. Next, the operator removes the engaging claw 13b from the lower surface of the ion generator 20 while holding the ion generator 20 with fingers. When the ion generator 20 is pulled out, the connector 23 is detached from the terminal portion 19, and the engaging claw 13a slides on the cover 21 on the front side of the ion generator 20 and engages with the groove portion 21f. Further, by pulling out the ion generator 20, the ion generator 20 is removed. Thereby, the ion generator 20 can be replaced | exchanged.

  When the operator forgets to hold the ion generator 20 with his / her finger and removes the engaging claw 13b from the lower surface of the ion generator 20, the connector 23 and the terminal portion 19 held by the covers 21 and 22 The ion generator 20 is prevented from falling by the frictional force. Even if the connector 23 is detached from the terminal portion 19, the engaging claw 13b is engaged with the groove portion 21f, and the ion generator 20 is prevented from falling.

  According to the present embodiment, the front panel 2 has a claw portion 5a and is provided with an operation button 5 that moves horizontally at one end, and a torsion spring 6 is loosely attached to the other end, and is engaged with the claw portion 5a and the torsion spring 6, respectively. Since the engaging members 10 c and 18 a (first and second engaging members) to be combined are provided in the main body portion 10, the front panel 2 can be easily opened by pressing the operation button 5. Further, when the front panel 2 is opened, the front panel 2 can be separated from the opening surface of the main body 10 according to the length of the torsion spring 6. Thereby, the workability at the time of replacement | exchange of the ion generator 20 can be improved without the front panel 2 becoming obstructive. In addition, when the front panel 2 is opened, it is suspended by the torsion spring 6 and does not fall, so that safety can be improved.

  In addition, since chamfering 2b is applied to the upper end of the peripheral surface of the front panel 2, a shadow is formed around the front panel 2, making it difficult to see the gap between the front panel 2 and the ceiling wall A. Can be improved.

  Further, when the slidable contact surface slidably contacting the engaging member 10c of the claw portion 5a is an inclined surface, the slidable contact surface formed by the inclined surface of the claw portion 5a urges the engaging member 10c and the front panel 2 is pulled upward. It is done. Thereby, generation | occurrence | production of the clearance gap between the front panel 2 and the ceiling wall A can be prevented, and the aesthetics of an ion sending apparatus can be improved.

  In the present embodiment, negative ions may be emitted from both electrode portions 25 and 26 of the ion generator 20. Thereby, a relaxation effect, reduction of active oxygen in a human body, etc. can be aimed at.

  According to the present invention, the present invention can be used for an ion delivery device that delivers ions into a living room.

DESCRIPTION OF SYMBOLS 1 Ion sending device 2 Front cover 2b Chamfering 3 Suction port 4 Outlet 5 Operation button 5a Claw part 6 Torsion spring 10 Main body part 10a Outer case 10c Engagement member 11 Blower fan 12 Blower path 12a Branch path 13 Holding part 13a Back surface part 13b Engagement claw 13c Guide projection part 17 Projection rib 18 Inner case 18a Engagement member 19 Terminal part 20 Ion generator 21, 22 Cover 21a, 22a Support part 21d, 21e Hole part 21f Groove part 22b Notch part 22d Guide groove 23 Connector 24 Ion generating element 24a Terminal 25, 26 Electrode portion 25a, 26a Discharge electrode 25b, 26b Dielectric electrode 27 Lead wire 30 Grille 33, 34 Opening portion 37 Clip

Claims (3)

A main body part mounted in a ceiling wall of a living room, a front panel covering the lower surface of the main body part and having an inlet and an air outlet open, and an air outlet provided in the main body part to communicate with the air outlet A living room that is provided with an air generating passage, an air blowing fan that is arranged in the air blowing path, and an ion generator that includes an electrode unit that generates ions, and that flows into the air passage from the suction port by driving the air blowing fan. In the ion delivery device that mixes the ions generated in the electrode part to the air inside and sends out from the outlet,
An operation button provided at one end of the front panel so as to be horizontally movable and biased in a direction protruding from the front panel and having a claw protruding upward, and a fulcrum attached to the other end of the front panel A torsion spring having a locking portion protruding outward at a tip extending in a V shape from the portion; a first engagement member provided on the main body portion for engaging the claw portion that moves horizontally; and An ion delivery device comprising: a second engagement member that is provided and is inserted through the tip of the torsion spring and engages with the vicinity of the fulcrum portion by the elasticity of the torsion spring.   The ion delivery device according to claim 1, wherein the upper end of the peripheral surface of the front panel is chamfered.   The ion delivery device according to claim 1, wherein a sliding contact surface that makes sliding contact with the first engagement member of the claw portion is an inclined surface.

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