US20140225001A1 - Ion generation unit - Google Patents
Ion generation unit Download PDFInfo
- Publication number
- US20140225001A1 US20140225001A1 US14/118,932 US201214118932A US2014225001A1 US 20140225001 A1 US20140225001 A1 US 20140225001A1 US 201214118932 A US201214118932 A US 201214118932A US 2014225001 A1 US2014225001 A1 US 2014225001A1
- Authority
- US
- United States
- Prior art keywords
- ion generation
- curbing
- casing
- generation device
- generation unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J27/00—Ion beam tubes
- H01J27/02—Ion sources; Ion guns
- H01J27/022—Details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T23/00—Apparatus for generating ions to be introduced into non-enclosed gases, e.g. into the atmosphere
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L9/00—Disinfection, sterilisation or deodorisation of air
- A61L9/16—Disinfection, sterilisation or deodorisation of air using physical phenomena
- A61L9/22—Ionisation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/30—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by ionisation
Definitions
- the present invention relates to an ion generation unit.
- An air conditioner, an air cleaner, a dehumidifier and the like are typical electric apparatuses with which an ion generation apparatus is combined. Some are put in the market as stand-alone ion generation apparatuses.
- Patent document 1 discloses an example of an ion generation apparatus that uses the corona discharge.
- the ion generation apparatus disclosed in the patent document 1 steps up an input voltage from a commercial power supply by means of a voltage step-up apparatus, further transforms it into a drive voltage that has a predetermined drive waveform, then applies it to the ion generation device to generate positive ions and negative ions.
- an ion generation apparatus requires switching at a high voltage and cannot evade occurrence of a radiant noise caused by the switching.
- anti-radiant-noise measures the following measures are employed:
- a measure mainly following the lead of above measure (b) is adopted. Namely, a copper tape, a kind of metal-foil tape, is wound around a voltage step-up coil, and a shield case formed of a tin plate is disposed around the voltage step-up coil to curb occurrence of a radiant noise.
- the measure (b) has the same problem as the measure (a) that the voltage applied to the discharge body declines. This is because a discharge occurs between a secondary terminal of the voltage step-up transformer and the shield case.
- the present invention has been made in light of the above points, and it is an object to provide an ion generation unit that reduces a radiant noise to improve the reliability of a product without reducing an amount of generated ions, and further does not require many kinds of ion generation devices as service parts.
- An ion generation unit includes: an ion generation device that generates ions by voltage application; and a casing that houses the ion generation device; wherein an inner surface of the casing is provided with a curbing member that curbs a radiant noise caused by ion generation.
- the casing is provided with an opening portion that discharges the ions generated from the ion generation device to outside, and a portion other than the opening portion is provided with the curbing member.
- the curbing member is composed of a metal plate.
- the curbing member is composed of an adhesive sheet that contains a metal foil as a component.
- the inner surface of the casing that houses the ion generation device is provided with the curbing member that curbs the radiant noise: accordingly, it is possible to reduce the radiant noise without reducing an amount of generated ions.
- the ion generation device is not modified: accordingly, it is unnecessary to prepare many kinds of the ion generation devices as service parts.
- FIG. 1 is a front view of an ion generation unit according to an embodiment of the present invention.
- FIG. 2 is an exploded perspective view of components.
- FIG. 3 is a perspective view of an ion generation unit in an assembled state to which a rear lid is ready to be fitted.
- FIG. 4 is a sectional view of an ion generation unit.
- An ion generation unit 1 as an embodiment of the present invention is designed as a unit to be incorporated in other apparatuses such as, for example, an indoor unit of an air conditioner, an air cleaner, a car and the like.
- the ion generation unit 1 includes a synthetic resin casing 10 that has a shape of a small-sized indoor unit of an air conditioner and is laterally long.
- the casing 10 includes a casing main body 11 and a rear lid 12 (see FIG. 3 ).
- the rear lid 12 is visible from a rear side only, and when viewed from a front side, the casing main body 11 makes up an entire appearance. In the meantime, an upper side and a lower side of FIG.
- FIG. 1 correspond to an upper side and a lower side of the ion generation unit 1 , respectively, and a left side and a right side of FIG. 1 correspond to a left side and a right side of the ion generation unit 1 , respectively. This orientation also applies to other components.
- An ion generation device 20 is housed in the casing 10 .
- the ion generation device 20 has a rectangular parallelepiped shape. When applied a predetermined voltage to the ion generation device 20 , the ion generation device 20 generates ions by corona discharge.
- the ion generation device 20 is able to generate positive ions H + (H 2 O) m (m is an arbitrary natural number) and negative ions O 2 ⁇ (H 2 O) n (n is an arbitrary natural number) concurrently.
- the casing main body 11 is provided with opening portions at a position near the left end and at a position near the right end, through both of which ions generated by the ion generation device 20 are discharged.
- the positions of the opening portions correspond to positions of ion generation portions (not shown) of the ion generation device 20 .
- Both the left opening portion and the right opening portion are formed by arranging an opening portion 13 that extends from the front surface to an upper surface of the casing main body 11 and an opening portion 14 that extends from the upper surface to a lower surface of the casing main body 11 vertically.
- the opening portions 13 , 14 are provided with sets of a plurality of vertical crosspieces at predetermined intervals that prevent foreign matter from entering the casing 10 .
- Crosspieces 13 a are arranged at relatively narrow intervals in the opening portion 13 while crosspieces 14 a are arranged at relatively wide intervals in the opening portion 14 .
- the casing main body 11 is placed on an assembly table or the like with the front surface thereof down and the rear opening thereof, into which the rear lid 12 is fitted, up.
- the ion generation device 20 is inserted into the casing main body 11 through the rear opening.
- a power supply cable 21 is connected to the ion generation device 20 .
- the power supply cable 21 has connectors 22 , 23 at both ends.
- the connector 22 is to be connected to the ion generation device 20
- the connector 23 is to be connected to an external power supply cable (not shown).
- the connector 23 is fixed to the casing main body 11 by means of a screw 24 .
- the ion generation unit 11 reaches completion.
- a surface facing an inside of the casing 10 is provided with two stripes of protrusions 15 , 16 that go into an internal space of the casing main body 11 . Both protrusions 15 and 16 extend in a horizontal direction.
- the protrusion 15 is formed at a position that is lower than an upper edge of the rear lid 12 by a thickness of an outer shell of the casing main body 11
- the protrusion 16 is formed at a position that is higher than a lower edge of the rear lid 12 by the thickness of the outer shell of the casing main body 11 .
- An upper surface of the protrusion 15 and a lower surface of the protrusion 16 are each provided with a plurality of engagement protrusions 17 .
- the protrusion 15 is provided with four engagement protrusions 17
- the protrusion 16 is provided with four engagement protrusions 17 at an equal interval.
- the number “four” defining protrusion quantity is a mere example and does not limit the invention.
- the casing main body 11 is provided with a plurality of engagement holes 18 at positions corresponding to the engagement protrusions 17 .
- the curbing member can be composed of a metal plate.
- the metal plate can be fixed to the casing 10 by means of an adhesive, a double-faced adhesive tape, a screw or the like.
- the curbing member can be composed of an adhesive sheet that contains a metal foil, an aluminum foil for example, as a component. Such a curbing member is easy to mount. If the adhesive sheet is formed into a roll of adhesive tape, it becomes easy to handle.
- FIG. 2 shows a state where the curbing member is mounted on an inner surface of the casing main body 11 .
- the curbing member 30 is mounted on a flat inner surface between the left and right opening portions 13 , 14 , the curbing member 31 is mounted on a lower inner surface, and the curbing member 32 is mounted on a left inner surface.
- a curbing member, which pairs with the curbing member 31 is mounted on an upper inner surface that is hidden in FIG. 2 .
- a curbing member, which pairs with the curbing member 32 is mounted on a right inner surface that is hidden in FIG. 2 .
- FIG. 3 shows a state where a curbing member is mounted on the inner surface of the rear lid 12 .
- the curbing member 33 covers a flat portion between the protrusions 15 , 16 .
- the curbing members 30 , 31 , 32 , and 33 are mounted on the inner surface of the casing main body 11 . accordingly, it is possible to reduce the radiant noise without mounting a curbing member on the ion generation device 20 .
- the curbing members 30 , 31 , 32 , and 33 are mounted on places other than the opening portions 13 , 14 : accordingly, discharge of the ions through the opening portions 13 , 14 is not discouraged, i.e. an amount of discharged ion is not reduced.
- the ion generation device 20 is not modified: accordingly, it is unnecessary to prepare many kinds of the ion generation devices 20 as service parts. In other words, the ion generation device 20 is standardizable.
- the structure of a holder that holds the ion generation unit 1 is unique to each apparatus. However, even if an apparatus is modified, as long as the holder structure is the same, the same ion generation unit 1 is incorporable. In other words, the same ion generation device 20 as a standard service part is usable.
- the present invention is widely applicable to ion generation units.
Abstract
Description
- The present invention relates to an ion generation unit.
- In recent years, there are many electric apparatuses that generate one or both of positive ions and negative ions to obtain effects of germ eradication, deodorization, refreshing and the like. An air conditioner, an air cleaner, a dehumidifier and the like are typical electric apparatuses with which an ion generation apparatus is combined. Some are put in the market as stand-alone ion generation apparatuses.
- A traditional method to generate ions is corona discharge. In this method, a high voltage is applied to a discharge body in the atmosphere to produce corona discharge, thereby generating ions electrically.
Patent document 1 discloses an example of an ion generation apparatus that uses the corona discharge. - The ion generation apparatus disclosed in the
patent document 1 steps up an input voltage from a commercial power supply by means of a voltage step-up apparatus, further transforms it into a drive voltage that has a predetermined drive waveform, then applies it to the ion generation device to generate positive ions and negative ions. - PLT1: JP-A-2006-127855
- According to its operation principle, an ion generation apparatus requires switching at a high voltage and cannot evade occurrence of a radiant noise caused by the switching. As anti-radiant-noise measures, the following measures are employed:
- (a) Lowering the peak value of an ion generation voltage of the ion generation apparatus.
- (b) Enclosing a voltage step-up transformer with a shield case.
- (c) Attaching an adhesive tape (hereinafter “metal-foil tape” in the present specification) containing a metal (usually aluminum) foil as a component, to an outer surface of the ion generation device.
- In the ion generation apparatus disclosed in the
patent document 1, a measure mainly following the lead of above measure (b) is adopted. Namely, a copper tape, a kind of metal-foil tape, is wound around a voltage step-up coil, and a shield case formed of a tin plate is disposed around the voltage step-up coil to curb occurrence of a radiant noise. - According to the above measure (a), a voltage applied to a discharge body declines and it becomes hard to generate intended amount of ions. Also the measure (b) has the same problem as the measure (a) that the voltage applied to the discharge body declines. This is because a discharge occurs between a secondary terminal of the voltage step-up transformer and the shield case.
- In a case of taking the above measure (c), a degree of radiant noise curbing changes depending on the manner how the metal-foil tape is attached. It is possible to look for, through trial and error, a way of metal-foil tape attachment that curbs the radiant noise and does not reduce the amount of generated ions so much. However, this method requires preparation of ion generation devices, to which the metal-foil tape has been attached, as service parts. Besides, an acceptable level of radiant noise depends on the type of electric apparatuses into which the ion generation device is incorporated, and it is necessary to provide, as service parts, many kinds of ion generation devices having the metal-foil tape attached in different ways.
- The present invention has been made in light of the above points, and it is an object to provide an ion generation unit that reduces a radiant noise to improve the reliability of a product without reducing an amount of generated ions, and further does not require many kinds of ion generation devices as service parts.
- An ion generation unit according to the present invention includes: an ion generation device that generates ions by voltage application; and a casing that houses the ion generation device; wherein an inner surface of the casing is provided with a curbing member that curbs a radiant noise caused by ion generation.
- In the ion generation unit having the above structure, it is preferable that the casing is provided with an opening portion that discharges the ions generated from the ion generation device to outside, and a portion other than the opening portion is provided with the curbing member.
- In the ion generation unit having the above structure, it is preferable that the curbing member is composed of a metal plate.
- In the ion generation unit having the above structure, it is preferable that the curbing member is composed of an adhesive sheet that contains a metal foil as a component.
- According to the present invention, the inner surface of the casing that houses the ion generation device is provided with the curbing member that curbs the radiant noise: accordingly, it is possible to reduce the radiant noise without reducing an amount of generated ions. Besides, the ion generation device is not modified: accordingly, it is unnecessary to prepare many kinds of the ion generation devices as service parts.
-
FIG. 1 is a front view of an ion generation unit according to an embodiment of the present invention. -
FIG. 2 is an exploded perspective view of components. -
FIG. 3 is a perspective view of an ion generation unit in an assembled state to which a rear lid is ready to be fitted. -
FIG. 4 is a sectional view of an ion generation unit. - An
ion generation unit 1 as an embodiment of the present invention is designed as a unit to be incorporated in other apparatuses such as, for example, an indoor unit of an air conditioner, an air cleaner, a car and the like. Theion generation unit 1 includes asynthetic resin casing 10 that has a shape of a small-sized indoor unit of an air conditioner and is laterally long. Thecasing 10 includes a casingmain body 11 and a rear lid 12 (seeFIG. 3 ). Therear lid 12 is visible from a rear side only, and when viewed from a front side, the casingmain body 11 makes up an entire appearance. In the meantime, an upper side and a lower side ofFIG. 1 correspond to an upper side and a lower side of theion generation unit 1, respectively, and a left side and a right side ofFIG. 1 correspond to a left side and a right side of theion generation unit 1, respectively. This orientation also applies to other components. - An
ion generation device 20 is housed in thecasing 10. Theion generation device 20 has a rectangular parallelepiped shape. When applied a predetermined voltage to theion generation device 20, theion generation device 20 generates ions by corona discharge. Theion generation device 20 is able to generate positive ions H+ (H2O)m (m is an arbitrary natural number) and negative ions O2 − (H2O)n (n is an arbitrary natural number) concurrently. - The casing
main body 11 is provided with opening portions at a position near the left end and at a position near the right end, through both of which ions generated by theion generation device 20 are discharged. The positions of the opening portions correspond to positions of ion generation portions (not shown) of theion generation device 20. Both the left opening portion and the right opening portion are formed by arranging anopening portion 13 that extends from the front surface to an upper surface of the casingmain body 11 and anopening portion 14 that extends from the upper surface to a lower surface of the casingmain body 11 vertically. Theopening portions casing 10.Crosspieces 13 a are arranged at relatively narrow intervals in theopening portion 13 whilecrosspieces 14 a are arranged at relatively wide intervals in theopening portion 14. - As shown in
FIG. 2 , the casingmain body 11 is placed on an assembly table or the like with the front surface thereof down and the rear opening thereof, into which therear lid 12 is fitted, up. Theion generation device 20 is inserted into the casingmain body 11 through the rear opening. Apower supply cable 21 is connected to theion generation device 20. Thepower supply cable 21 hasconnectors connector 22 is to be connected to theion generation device 20, while theconnector 23 is to be connected to an external power supply cable (not shown). Theconnector 23 is fixed to the casingmain body 11 by means of ascrew 24. - As shown in
FIG. 3 , when therear lid 12 is fitted with theion generation device 20 and thepower supply cable 21 set in the casingmain body 11, theion generation unit 11 reaches completion. As to therear lid 12, a surface facing an inside of thecasing 10 is provided with two stripes ofprotrusions main body 11. Bothprotrusions protrusion 15 is formed at a position that is lower than an upper edge of therear lid 12 by a thickness of an outer shell of the casingmain body 11, while theprotrusion 16 is formed at a position that is higher than a lower edge of therear lid 12 by the thickness of the outer shell of the casingmain body 11. - An upper surface of the
protrusion 15 and a lower surface of theprotrusion 16 are each provided with a plurality ofengagement protrusions 17. In the embodiment, theprotrusion 15 is provided with fourengagement protrusions 17, and also theprotrusion 16 is provided with fourengagement protrusions 17 at an equal interval. In the meantime, the number “four” defining protrusion quantity is a mere example and does not limit the invention. The casingmain body 11 is provided with a plurality of engagement holes 18 at positions corresponding to theengagement protrusions 17. - When the
rear lid 12 is placed on the casingmain body 11 in the state ofFIG. 3 and a downward force is exerted on therear lid 12, theengagement protrusion 17 engages with theengagement hole 18 to go to a state shown inFIG. 4 . In this state,protrusions 19 formed at some positions of an inner surface of therear lid 12 push down theion generation device 20, whereby theion generation device 20 is firmly fixed. - An inner surface of the
casing 10 is provided with a curbing member that curbs a radiant noise caused by the ion generation. The curbing member can be composed of a metal plate. The metal plate can be fixed to thecasing 10 by means of an adhesive, a double-faced adhesive tape, a screw or the like. - The curbing member can be composed of an adhesive sheet that contains a metal foil, an aluminum foil for example, as a component. Such a curbing member is easy to mount. If the adhesive sheet is formed into a roll of adhesive tape, it becomes easy to handle.
- It is preferable to mount the curbing member on both the casing
main body 11 and therear lid 12.FIG. 2 shows a state where the curbing member is mounted on an inner surface of the casingmain body 11. The curbingmember 30 is mounted on a flat inner surface between the left and right openingportions member 31 is mounted on a lower inner surface, and the curbingmember 32 is mounted on a left inner surface. A curbing member, which pairs with the curbingmember 31, is mounted on an upper inner surface that is hidden inFIG. 2 . Likewise, a curbing member, which pairs with the curbingmember 32, is mounted on a right inner surface that is hidden inFIG. 2 . -
FIG. 3 shows a state where a curbing member is mounted on the inner surface of therear lid 12. The curbingmember 33 covers a flat portion between theprotrusions - As described above, the curbing
members main body 11. accordingly, it is possible to reduce the radiant noise without mounting a curbing member on theion generation device 20. The curbingmembers portions 13, 14: accordingly, discharge of the ions through the openingportions - The
ion generation device 20 is not modified: accordingly, it is unnecessary to prepare many kinds of theion generation devices 20 as service parts. In other words, theion generation device 20 is standardizable. - In various apparatuses that incorporate the
ion generation unit 1, the structure of a holder that holds theion generation unit 1 is unique to each apparatus. However, even if an apparatus is modified, as long as the holder structure is the same, the sameion generation unit 1 is incorporable. In other words, the sameion generation device 20 as a standard service part is usable. - Hereinbefore, the embodiment of the present invention is described. However, the scope of the present invention is not limited to the embodiment, and various modifications can be made if the modifications do not depart from the spirit of the invention.
- The present invention is widely applicable to ion generation units.
- 1 ion generation unit
- 2 casing
- 11 casing main body
- 12 rear lid
- 13, 14 opening portions
- 20 ion generation device
- 30, 31, 32, 33 curbing members
Claims (3)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011-117700 | 2011-05-26 | ||
JP2011117700A JP5221709B2 (en) | 2011-05-26 | 2011-05-26 | Ion generation unit |
PCT/JP2012/061225 WO2012160942A1 (en) | 2011-05-26 | 2012-04-26 | Ion generation unit |
Publications (2)
Publication Number | Publication Date |
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US8803114B1 US8803114B1 (en) | 2014-08-12 |
US20140225001A1 true US20140225001A1 (en) | 2014-08-14 |
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ID=47217025
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US14/118,932 Active US8803114B1 (en) | 2011-05-26 | 2012-04-26 | Ion generation unit |
Country Status (4)
Country | Link |
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US (1) | US8803114B1 (en) |
JP (1) | JP5221709B2 (en) |
CN (1) | CN202797610U (en) |
WO (1) | WO2012160942A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6411139B2 (en) * | 2014-09-04 | 2018-10-24 | シャープ株式会社 | Ion generating unit and air conditioner equipped with the same |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3176447A (en) * | 1961-06-07 | 1965-04-06 | Gen Electric | Air purifier |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60166200U (en) * | 1984-04-12 | 1985-11-05 | オムロン株式会社 | Grounding structure of shield case |
US6291369B1 (en) | 1998-04-08 | 2001-09-18 | Dai Nippon Printing Co., Ltd. | Resin molding |
JP2000323884A (en) * | 1999-03-08 | 2000-11-24 | Dainippon Printing Co Ltd | Resin case and resin mold |
JP2004111135A (en) * | 2002-09-17 | 2004-04-08 | Sharp Corp | Ion generating device |
JP2006127855A (en) | 2004-10-27 | 2006-05-18 | Sharp Corp | Ion generating device and electric equipment equipped with the same |
JP2009266664A (en) * | 2008-04-25 | 2009-11-12 | Sharp Corp | Ion generating device |
JP2011067771A (en) * | 2009-09-25 | 2011-04-07 | Panasonic Electric Works Co Ltd | Discharge apparatus |
-
2011
- 2011-05-26 JP JP2011117700A patent/JP5221709B2/en active Active
-
2012
- 2012-04-26 US US14/118,932 patent/US8803114B1/en active Active
- 2012-04-26 WO PCT/JP2012/061225 patent/WO2012160942A1/en active Application Filing
- 2012-05-21 CN CN2012202286832U patent/CN202797610U/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3176447A (en) * | 1961-06-07 | 1965-04-06 | Gen Electric | Air purifier |
Also Published As
Publication number | Publication date |
---|---|
US8803114B1 (en) | 2014-08-12 |
JP5221709B2 (en) | 2013-06-26 |
CN202797610U (en) | 2013-03-13 |
JP2012248349A (en) | 2012-12-13 |
WO2012160942A1 (en) | 2012-11-29 |
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