EP0342161A2 - Apparatus to deliver hot air - Google Patents

Apparatus to deliver hot air Download PDF

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Publication number
EP0342161A2
EP0342161A2 EP89830030A EP89830030A EP0342161A2 EP 0342161 A2 EP0342161 A2 EP 0342161A2 EP 89830030 A EP89830030 A EP 89830030A EP 89830030 A EP89830030 A EP 89830030A EP 0342161 A2 EP0342161 A2 EP 0342161A2
Authority
EP
European Patent Office
Prior art keywords
delivery unit
protection casing
engaged
operating position
wall
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
Application number
EP89830030A
Other languages
German (de)
French (fr)
Other versions
EP0342161B1 (en
EP0342161A3 (en
Inventor
Carlo Bertani
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mo El SRL
Original Assignee
Mo El SRL
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mo El SRL filed Critical Mo El SRL
Priority to AT89830030T priority Critical patent/ATE74719T1/en
Publication of EP0342161A2 publication Critical patent/EP0342161A2/en
Publication of EP0342161A3 publication Critical patent/EP0342161A3/en
Application granted granted Critical
Publication of EP0342161B1 publication Critical patent/EP0342161B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D20/00—Hair drying devices; Accessories therefor
    • A45D20/04—Hot-air producers
    • A45D20/08—Hot-air producers heated electrically
    • A45D20/16—Fixed installed drying devices

Definitions

  • the present invention relates to an apparatus to deliver hot air, of the type comprising a protection casing to be fixed to a wall, an air delivery unit electrically operated and housed in the protection casing and at least a pushbutton to actuate the delivery unit.
  • the apparatus in question is particularly adapted to be used as hair or hand drier in public and private use utility premises, such as dressing rooms and showers in gymnasiums, swimming pools, saunas and/or premises where sports are generally practised, as well as in bathrooms in hotels, restaurants and the like. It is known that in premises of the above type there often is the installation of apparatuses designed to produce a hot air flow so that a user may dry his hair or hands quickly and hygienically.
  • Apparatuses of this kind substantially comprise a protection casing to be fixed to a wall and a hot air delivery unit accommodated within the protection casing.
  • Housed in the delivery unit is an electric motor operable by means of a pushbutton projecting outwardly from the protection casing, and operated by the electric motor is an impeller drawing air in through an inlet formed in the delivery unit and sending it to one or more resistors disposed close to an outlet formed on the opposite side to the inlet. The air sent to the resistors is then heated and delivered to the surrounding atmosphere through said outlet.
  • the main object of the present invention is to solve the drawbacks of the known art by providing an apparatus exhibiting construction contrivances adapted to prevent the water which may be accidentally dropped onto the protection casing from reaching the electric components of the apparatus, while protecting at the same time the user against the possibility of electric shocks when he operates the pushbutton.
  • an apparatus to deliver hot air characterized in that the delivery unit is slidably engaged with the protection casing and in that said pushbutton acts between said protection casing and the delivery unit to cause the operation of said delivery unit when the latter moves within the casing from a non-use position to an operating position, positioning means being provided to selectively retain the delivery unit in its non-use position and operating position.
  • 1 globally denotes an apparatus to deliver hot air in accordance with the present invention.
  • Apparatus 1 comprises a protection casing 2 to be fastened to a wall 3 and accommodating a hot air delivery unit 4 operable by means of a pushbutton 5.
  • the protection casing 2 made of an electrically insulating material, has a base portion 6 fixable to wall 3 by means of expansion nogs 7 or the like. Extending forward from the top of the base portion 6 is an upper portion 8 to which a downwardly extending front portion 8a is connected. Two side portions 9 extend from the opposite sides of the upper 8, front 8a and base 6 portions, an opening 2a being formed between the above mentioned portions, at the lower part thereof.
  • flaps 10 are housed at the inside of the protection casing 2; they are integral to the base portion 6 and have each a through slot 11 disposed in a substantially vertical direction.
  • the delivery unit 4 is comprised of a housing 12, made of plastic material, at the opposite ends of which an air inlet 12a and an air outlet 12b are respectively defined. Located inside the housing 12 is an electric motor connected to an impeller disposed close to the air inlet 12a and one or more resistors housed in the vicinity of the air outlet 12b.
  • the housing 12 is provided on its outer opposite sides, with two projections 13 each guided within the slot 11 of one of the two flaps mentioned above.
  • the delivery unit 4 is oriented in a vertical direction the air inlet 12a being disposed upwardly, and is in communication with the surrounding atmosphere through the opening 2a provided at the lower part of the protection casing 2.
  • the pushbutton 5 to operate the delivery unit 4 is disposed within the protection casing 2 so as to be acted upon by the delivery unit itself when the latter moves, while slightly rising, from a non-use position to an operating position.
  • the housing 12 is provided with a drive lug, referenced by 14 in Fig. 1, located to such a position as to cooperate with the pushbutton 5 to close the contacts thereof when the delivery unit 4 moves to its operating position.
  • apparatus 1 is also provided with positioning means to selectively retain the delivery unit 4 in its non-use position and operating position.
  • said positioning means consists of the combination of at least a return spring and a flexible hose 15 shown in dotted line, the weight of the latter being higher than the lifting force of the return spring.
  • the return spring may for example be a helical spring 16 one end of which is engaged with the upper portion 8 of the protection casing 2, the opposite end being engaged with the housing 12 of the delivery unit 4.
  • an elastic bearing identified by 17 in Fig. 1, supported by a fastening portion 17a integral to the base portion 6 of the protection casing 2.
  • the elastic bearing 17 incorporates a seat 17b inside which a projecting portion 4a of the delivery unit 4 engages.
  • the elastic bearing 17 is made of rubber or another elastomeric material.
  • the non-use position of the delivery unit 4 is held as far as the weight of the flexible hose 15 connected to the delivery unit 4 has a higher value than the lifting force of the helical spring 16 and/or elastic bearing 17 and/or magnet 18. In this position the drive lug 14 provided on housing 12 does not come in contact with the pushbutton 5.
  • the apparatus of the invention can also be arranged so as to be used as a hand drier.
  • the flexible hose 15 is not necessary and the positioning means essentially comprises a bistable spring, referenced by 20 in Fig. 2, one end of which is engaged in a seat 20a incorporated in the base portion 6, the other end being engaged in a further seat 20b incorporated in the housing 12.
  • the bistable spring 20 retains the delivery unit 4 in its non-use and operating positions respectively.
  • the displacement of the delivery unit 4 from the operating position to the non-use position and vice versa is achieved by a mere manual action directly carried out on the housing 12.
  • the present invention attains the intended purposes.
  • the delivery unit 4, pushbutton 5 and all electric components present in apparatus 1 are protected against possible water splashings and/or jets which may accidentally fall and impinge on the apparatus itself.

Landscapes

  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Drying Of Solid Materials (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Thermotherapy And Cooling Therapy Devices (AREA)
  • Percussion Or Vibration Massage (AREA)
  • Massaging Devices (AREA)
  • Cleaning And Drying Hair (AREA)
  • Air-Flow Control Members (AREA)

Abstract

The apparatus comprises a protection casing (2) having a base portion (6) fixable to a wall (3), an upper portion (8), and two side portions (9) extending downwardly from the upper portion. An air delivery unit (4) is contained between the upper portion (8) and side portions (9) and is slidably engaged relative to the casing (2) to be displaced from a non-use position to an operating position. When in its operating position, said air delivery unit (4) is actuated by a pushbutton (5) housed in the casing (2) and operated by the delivery unit itself. A return spring (16; 17) and/or a magnet (18) act between the casing (2) and the delivery unit (4) so as to dispose the latter in its operating position when a flexible hose (15) associated with the delivery unit is manually lifted by a user.

Description

  • The present invention relates to an apparatus to deliver hot air, of the type comprising a protection casing to be fixed to a wall, an air delivery unit electrically operated and housed in the protection casing and at least a pushbutton to actuate the delivery unit.
  • In greater detail, the apparatus in question is particularly adapted to be used as hair or hand drier in public and private use utility premises, such as dressing rooms and showers in gymnasiums, swimming pools, saunas and/or premises where sports are generally practised, as well as in bathrooms in hotels, restaurants and the like. It is known that in premises of the above type there often is the installation of apparatuses designed to produce a hot air flow so that a user may dry his hair or hands quickly and hygienically.
  • Apparatuses of this kind substantially comprise a protection casing to be fixed to a wall and a hot air delivery unit accommodated within the protection casing. Housed in the delivery unit is an electric motor operable by means of a pushbutton projecting outwardly from the protection casing, and operated by the electric motor is an impeller drawing air in through an inlet formed in the delivery unit and sending it to one or more resistors disposed close to an outlet formed on the opposite side to the inlet. The air sent to the resistors is then heated and delivered to the surrounding atmosphere through said outlet.
  • Although these apparatuses are quite adapted to perform the functions they have been constructed for, it has been found that they still have some problems as regards their safety in use, taking into account the fact that they are almost always installed in places having a high humidity rate and/or in the presence of water. In these places said apparatuses are particularly exposed to water splashings or jets as well as to the formation of condensate on the surfaces of the various component elements.
  • Under this situation short-circuits may often occur, which involves damages to the apparatus component parts. In addition, it can be easily foreseen that the most important drawback of the above described apparatus resides in the possibility that a user may undergo electric shocks should be actuate the delivery unit acting on the pushbutton with wet hands, which often happens.
  • The main object of the present invention is to solve the drawbacks of the known art by providing an apparatus exhibiting construction contrivances adapted to prevent the water which may be accidentally dropped onto the protection casing from reaching the electric components of the apparatus, while protecting at the same time the user against the possibility of electric shocks when he operates the pushbutton.
  • The foregoing and further objects which will be more apparent in the course of the following description, are substantially attained by an apparatus to deliver hot air, characterized in that the delivery unit is slidably engaged with the protection casing and in that said pushbutton acts between said protection casing and the delivery unit to cause the operation of said delivery unit when the latter moves within the casing from a non-use position to an operating position, positioning means being provided to selectively retain the delivery unit in its non-use position and operating position.
  • Further features and advantages will best be understood from the detailed description of a preferred embodiment on an apparatus to deliver hot air in accordance with the present invention, given hereinafter by way of non-limiting example with reference to the accompanying drawings in which:
    • - Fig. 1 is a view of the apparatus of the invention, partially seen in section;
    • - Fig. 2 is a broken away sectional view of a detail of a further embodiment of the apparatus shown in Fig. 1.
  • With reference to the drawings, 1 globally denotes an apparatus to deliver hot air in accordance with the present invention.
  • Apparatus 1 comprises a protection casing 2 to be fastened to a wall 3 and accommodating a hot air delivery unit 4 operable by means of a pushbutton 5.
  • The protection casing 2, made of an electrically insulating material, has a base portion 6 fixable to wall 3 by means of expansion nogs 7 or the like. Extending forward from the top of the base portion 6 is an upper portion 8 to which a downwardly extending front portion 8a is connected. Two side portions 9 extend from the opposite sides of the upper 8, front 8a and base 6 portions, an opening 2a being formed between the above mentioned portions, at the lower part thereof.
  • Advantageously two flaps 10 are housed at the inside of the protection casing 2; they are integral to the base portion 6 and have each a through slot 11 disposed in a substantially vertical direction.
  • As seen in Fig. 1, the delivery unit 4 is comprised of a housing 12, made of plastic material, at the opposite ends of which an air inlet 12a and an air outlet 12b are respectively defined. Located inside the housing 12 is an electric motor connected to an impeller disposed close to the air inlet 12a and one or more resistors housed in the vicinity of the air outlet 12b.
  • The electric motor, impeller and resistors are not shown and will not be further described as known per se and conventional and, in addition, unimportant to the ends of the invention.
  • The housing 12 is provided on its outer opposite sides, with two projections 13 each guided within the slot 11 of one of the two flaps mentioned above. Advantageously the delivery unit 4 is oriented in a vertical direction the air inlet 12a being disposed upwardly, and is in communication with the surrounding atmosphere through the opening 2a provided at the lower part of the protection casing 2.
  • In an original manner the pushbutton 5 to operate the delivery unit 4 is disposed within the protection casing 2 so as to be acted upon by the delivery unit itself when the latter moves, while slightly rising, from a non-use position to an operating position. In greater detail, the housing 12 is provided with a drive lug, referenced by 14 in Fig. 1, located to such a position as to cooperate with the pushbutton 5 to close the contacts thereof when the delivery unit 4 moves to its operating position.
  • In accordance with the invention, apparatus 1 is also provided with positioning means to selectively retain the delivery unit 4 in its non-use position and operating position.
  • In the embodiment shown in Fig. 1 said positioning means consists of the combination of at least a return spring and a flexible hose 15 shown in dotted line, the weight of the latter being higher than the lifting force of the return spring.
  • The return spring may for example be a helical spring 16 one end of which is engaged with the upper portion 8 of the protection casing 2, the opposite end being engaged with the housing 12 of the delivery unit 4.
  • In addition to or in place of the helical spring 16, provision may be made for an elastic bearing, identified by 17 in Fig. 1, supported by a fastening portion 17a integral to the base portion 6 of the protection casing 2. The elastic bearing 17 incorporates a seat 17b inside which a projecting portion 4a of the delivery unit 4 engages. The elastic bearing 17 is made of rubber or another elastomeric material.
  • In place of the helical spring 16 and/or the elastic bearing 17 it is also possible to provide for the presence of a magnet 18 fastened underneath the upper portion 8 and cooperating with a ferromagnetic element 19 integral to the delivery unit 4.
  • Operation of the apparatus in question described above mainly as regards structure is very simple.
  • The non-use position of the delivery unit 4 is held as far as the weight of the flexible hose 15 connected to the delivery unit 4 has a higher value than the lifting force of the helical spring 16 and/or elastic bearing 17 and/or magnet 18. In this position the drive lug 14 provided on housing 12 does not come in contact with the pushbutton 5.
  • When the user lifts the flexible hose 15 the weight of the latter acting on the delivery unit 4 decreases, which enables the helical spring 16 and/or elastic bearing 17 and/or magnet 18 to bring said delivery unit to its operating position.
  • Simultaneously with this displacement the drive lug 14 closes the contacts of the pushbutton 5 thus operating the delivery unit 4. At the end of use of apparatus 1 the user must only put the flexibile hose 15 back to its original position in order to reset the inizial conditions and automatically cause the deactivation of the delivery unit 4.
  • The apparatus of the invention can also be arranged so as to be used as a hand drier. In this case the flexible hose 15 is not necessary and the positioning means essentially comprises a bistable spring, referenced by 20 in Fig. 2, one end of which is engaged in a seat 20a incorporated in the base portion 6, the other end being engaged in a further seat 20b incorporated in the housing 12.
  • Advantageously the bistable spring 20 retains the delivery unit 4 in its non-use and operating positions respectively. The displacement of the delivery unit 4 from the operating position to the non-use position and vice versa is achieved by a mere manual action directly carried out on the housing 12.
  • The present invention attains the intended purposes.
  • In fact, due to the particular shape of the protection casing 2, the delivery unit 4, pushbutton 5 and all electric components present in apparatus 1 are protected against possible water splashings and/or jets which may accidentally fall and impinge on the apparatus itself.
  • Furthermore, since it is not necessary to act directly on pushbutton 5 when the delivery unit is to be operated, the user will not be subjected to undergo electric shocks should he carry out this operation with wet hands.
  • Obviously the present invention is susceptible of many modifications and variations, all falling within the scope of the inventive idea characterizing it.

Claims (8)

1. An apparatus to delivery hot air comprising:
- a protection casing (2) to be fixed to a wall (3);
- a hot air delivery unit (4) electrically operated and housed in the protection casing (2);
- at least a pushbutton (5) to actuate the delivery unit (4),
characterized in that the delivery unit (4) is slidably engaged in the protection casing (2) and in that said pushbutton (5) acts between the protection casing (2) and the delivery unit to cause the operation of said delivery unit when the latter is moved within the casing (2) from a non-use position to an operating position, positioning means (15;16;17;18;19;20) being provided to selectively retain the delivery unit (4) in its non-use position and operating position.
2. An apparatus according to claim 1, characterized in that said protection casing (2) comprises a base portion (6) fixable to a wall, an upper portion (8) extending forward from the top of the base portion (6), two side portions (9) extending downwardly from the opposite sides of the upper portion (8), and a lower opening (2a) formed between the side portions (9) and designed to allow the delivery unit (4) to project from the protection casing.
3. An apparatus according to claims 1 and 2, characterized in that said delivery unit (4) comprises two side projections (13) guided within respective slots (11) formed in two flaps (10) integral to the protection casing (2).
4. An apparatus according to claim 1, characterized in that said positioning means comprises the combination of at least a return spring (16, 17) acting between the protection casing (2) and the delivery unit (4), and an outlet hose (15) connected to the delivery unit (4), the weight of said hose applied to the delivery unit (4) being greater than the force exerted by said return spring (16, 17) on the delivery unit itself in order to allow the latter to take its operating position as a result of the lifting of said hose (15) by the user.
5. An apparatus according to claim 4, characterized in that said return spring is a helical spring (16) one end of which is engaged with an inner wall of said protection casing (2), the opposite end being engaged with said delivery unit (4).
6. An apparatus according to claim 4, characterized in that said return spring is an elastic bearing (17) supported by a fastening portion (17a) integral to an inner wall of the protection casing (2), said bearing incorporating a seat (17b) engaged with a projecting portion (4a) of the delivery unit (4).
7. An apparatus according to claim 1, characterized in that said positioning means comprises the combination of at least a magnet (18, 19) acting between the upper portion (8) of the protection casing (2) and the delivery unit (4) and an outlet hose (15) connected to the delivery unit, the weight of said outlet hose applied to the delivery unit being greater than the force exerted by said magnet (18, 19) on the delivery unit so that the latter may take its operating position as a result of the lifting of said outlet hose (15) by the user.
8. An apparatus according to claim 1, characterized in that said positioning means comprises at least a bistable spring (20) one end (20a) of which is engaged with an inner wall of the protection casing (2), the opposite end (20b) being engaged with said delivery unit (4).
EP89830030A 1988-05-04 1989-01-27 Apparatus to deliver hot air Expired - Lifetime EP0342161B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89830030T ATE74719T1 (en) 1988-05-04 1989-01-27 DEVICE FOR DELIVERING HOT AIR.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT8821188U IT213974Z2 (en) 1988-05-04 1988-05-04 HOT AIR SUPPLY EQUIPMENT.
IT2118888U 1988-05-04

Publications (3)

Publication Number Publication Date
EP0342161A2 true EP0342161A2 (en) 1989-11-15
EP0342161A3 EP0342161A3 (en) 1990-05-30
EP0342161B1 EP0342161B1 (en) 1992-04-15

Family

ID=11178106

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89830030A Expired - Lifetime EP0342161B1 (en) 1988-05-04 1989-01-27 Apparatus to deliver hot air

Country Status (6)

Country Link
EP (1) EP0342161B1 (en)
AT (1) ATE74719T1 (en)
DE (1) DE68901212D1 (en)
ES (1) ES2030590T3 (en)
GR (1) GR3004376T3 (en)
IT (1) IT213974Z2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2698701B2 (en) * 2018-10-25 2020-05-14 Body Dryer S L INTEGRAL BODY DRYER

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE534230A (en) *
FR2297387A1 (en) * 1975-01-10 1976-08-06 Boccardi Carla Wall mounted electric hair dryer - has hand piece retained in recess by magnets and actuating switch when removed
EP0063670A2 (en) * 1981-04-24 1982-11-03 Soc. N.B.A. di Antonio Maraviglia n.c. Device for automatic shut-off and support of blow dryers
GB2136680A (en) * 1983-03-21 1984-09-26 Andis Co Wall mountings for hand held driers
EP0126777A1 (en) * 1982-09-30 1984-12-05 Yamada Electric Industries Co., Ltd. Domestic electric product

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE534230A (en) *
FR2297387A1 (en) * 1975-01-10 1976-08-06 Boccardi Carla Wall mounted electric hair dryer - has hand piece retained in recess by magnets and actuating switch when removed
EP0063670A2 (en) * 1981-04-24 1982-11-03 Soc. N.B.A. di Antonio Maraviglia n.c. Device for automatic shut-off and support of blow dryers
EP0126777A1 (en) * 1982-09-30 1984-12-05 Yamada Electric Industries Co., Ltd. Domestic electric product
GB2136680A (en) * 1983-03-21 1984-09-26 Andis Co Wall mountings for hand held driers

Also Published As

Publication number Publication date
EP0342161B1 (en) 1992-04-15
IT8821188V0 (en) 1988-05-04
DE68901212D1 (en) 1992-05-21
EP0342161A3 (en) 1990-05-30
IT213974Z2 (en) 1990-03-05
GR3004376T3 (en) 1993-03-31
ES2030590T3 (en) 1992-11-01
ATE74719T1 (en) 1992-05-15

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