WO1990004137A1 - Electric heater fan for heating and humidifying environmental air - Google Patents

Electric heater fan for heating and humidifying environmental air Download PDF

Info

Publication number
WO1990004137A1
WO1990004137A1 PCT/IT1988/000082 IT8800082W WO9004137A1 WO 1990004137 A1 WO1990004137 A1 WO 1990004137A1 IT 8800082 W IT8800082 W IT 8800082W WO 9004137 A1 WO9004137 A1 WO 9004137A1
Authority
WO
WIPO (PCT)
Prior art keywords
fan
air
tank
grille
water
Prior art date
Application number
PCT/IT1988/000082
Other languages
French (fr)
Inventor
Gianfranco Giudici
Original Assignee
Ermete Giudici S.R.L.
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 Ermete Giudici S.R.L. filed Critical Ermete Giudici S.R.L.
Publication of WO1990004137A1 publication Critical patent/WO1990004137A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F6/00—Air-humidification, e.g. cooling by humidification
    • F24F6/02—Air-humidification, e.g. cooling by humidification by evaporation of water in the air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
    • F24H3/0411—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between for domestic or space-heating systems

Definitions

  • heater fans namely forced convection elec ⁇ tric stoves in which an electrically operated fan creates a draught of air around incandescent electric heating ele ⁇ ments, are in every-day use. Cold air comes in and warm air comes out.
  • humidifiers namely apparatuses for humidifying air that is too dry in the home or place of work, such as the "wet surface”types in which a wetted surface meets a flow of air that consequently produ ⁇ ces vapour .
  • Subject of the invention is a heater fan in which the cur ⁇ rent of air generated by the fan is subjected to the ef- fects of a humidifier for the purposes of heating a room and humidifying the air at the same time.
  • the heat generator is a set of electric elements arranged spokewise, placed between the fan and the humidifier, con ⁇ centric to the axis of the fan.
  • the humidifier consists of an absorbing body connected to he water in a tank, air from the fan reaching said absorb- ing body and steam being produced by contact between the air and the absorbed water.
  • the absorbing body subs antially flat and through which holes are bored, is placed transversally to the stream of air from the fan and absorbs water from a shallow container communica ing with the water tank through an aperture made low down in said tank.
  • the tank is water tight so that, due to atmospheric pres ⁇ sure, the water level in the shallow container is kept as high as the upper ⁇ dge of the aperture through to the tank and maintained at that level as the absorbing body sucks up water when evaporation caused by the stream of air makes this necessary .
  • the fan, electric motor, heat generator and absorbing body in the humidifier are all aligned on a single axis between the apparatus's two grills one at air entry point and the other at air exit point.
  • the heat generator, electric motor and fan are placed in ⁇ side a cylindrical chamber whose two ends lie respectively against the grills through which air enters and leaves the apparatus .
  • the shape of the water tank is subs antially that of a pa ⁇ rallelepiped while the shallow container and the absorbing body stand at about 90° in relation to said tank near one of its vertical sides.
  • Said tank can therefore be placed parallel to the cylindri ⁇ cal chamber where the air circulates, and the absorbing bo ⁇ dy can be placed at one end of said chamber next to the air entry grille making a compact apparatus of minimum bulk Charac eristics and purposes of the invention will be made even clearer by the following example of its execution il- lustrated by diagrammatic drawings.
  • FIG. 1 Perspective view of the front of the invented ap ⁇ paratus seen from the outside.
  • Fig. 2 The outside of the apparatus seen from the back.
  • Fig. 3 An exploded view of the apparatus seen from the front .
  • the invented apparatus comprises a substan ially paralle ⁇ lepiped box-like body 10, with a front end 11 including a grille 12. At one side of said grille there is a rectangular window 13.
  • a vertical diaphragm 20, with grille 21, is fixed by means of spacing p ns 14 to the inner wall of said front.
  • the heater fan unit 25 is fixed frontally at the centre of said grille; said unit comprises a frame 26 carrying the electric motor 27 centrally and, on its circular edge, by means of spacers 28, the pair of crowns 29 and 30 made of insulating material on which is mounted the set 31 of elec ⁇ tric elements arranged spoke-wise.
  • the fan 24 is mounted on the shaft of the motor.
  • the horizontal cylinder 32 is mounted on the front surface of the diaphragm 20, said cylinder enclosing the heater fan unit 25 and extending from the diaphragm 20 to the in ⁇ ner surface of the front piece 11.
  • the back end 15 of the apparatus includes a grille 22.
  • the parallelepiped tank 16 for liquids is placed on one side of the box-like body 10 in such a way that the side 17 matches with the window 13 on the front I I of the apparatus Said tank is removeable.
  • side 17 is made of transparent material so that the level 23 of the liquid 34 in " the tank is always visible through the above window 13.
  • a horizontal rectangular shallow con ⁇ tainer 35set at an angle of 90° fits onto side 18 of the tank.
  • channel-shaped uprights 36,37 placed vertically, one on each of said sides. Between these two uprights stands the flat absorbing body 38, quadrangular in shape with perforations 39, said body resting on the floor of the shallow container 35.
  • Said absorbing body stands at a short distance from the back grille 22 of the apparatus.
  • a horizontal cylinder 33 is fixed to the back face of the diaphragm 20 and aligned with cylinder 32, of the same dia ⁇ meter, fixed to the front face.
  • Said second cylinder 33 extends substantially as far as the absorbing body 38 standing in the shallow container 35.
  • the heater unit 25, with fan, electric motor and spokewise electric heating elements, the front grille 12, the grille 21 on the internal diaphragm, the absorbing body 38 and the back grille 22 are all aligned on the same axis.
  • the cylinders 32, 33 between the front grille 12 and the grille 21 on the internal diaphragm 20 between this latter and the absorbing body 38 are also aligned on this same axis
  • a kind of cylindrical chamber 32-33 is thus created, extend ⁇ ing from the front grille 12 to the back grille 22, which houses the heater fan unit 25 and through which passes the perforated assorbing body.
  • the unit composed of the tank and shallow container can be pulled out from the apparatus for filling up with water 34.
  • the apparatus is set in motion by the switch 40 on the top.
  • Controls and various devices are used to regulate motor speed, total power of the electric heating elements and level of humidity, while, if desired, forced ventilation, heating or humidification can be turned off. Operation
  • the tank is filled with water, overturned and fitted into the apparatus.
  • the shallow container is kept full of wa ⁇ ter by gravity as this flows through the communicating ap ⁇ erture to a level as high as the top edge of said aperture but not higher, said aperture being the only communication with the atmosphere.
  • the body 38 absorbs water from the shallow container in which it is ' .immersed until fully saturated; then, when the apparatus is working, it continues to replenish itself from the container to make up for loss of water due to evapora ⁇ tion accentuated by the stream of air.
  • the level of water in the container is automatically maintained by inflow through the communicating aperture to the tank. Having put the apparatus into operation by starting up the fan and switching on the heating elements, the fan blades create a flow of air from the back grille 22 to the front grille 12 through the intermediate grille 21.
  • the user therefore benefits from a considerable reduction in purchasing and running costs, at the same time provi ⁇ ding the air he breathes with the proper amount of mois- ture as well as heat, obtaining a satisfactory level of conditionin .

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Air Humidification (AREA)

Abstract

Heater with a fan (24) worked by an electric motor (27), comprising a set of electric heating elements (31) arranged spokewise and concentric with the axis of the fan (24), and comprising a humidifier consisting of a flat absorbing body (38), bored with holes (39) from one side to the other, placed transversally in relation to the stream of air created by the fan (24) and sucking up water in a shallow container (35) that communicates with a water tight tank (16) through an aperture made low down in said tank, for automatic replenishment of the water (34) sucked up by the absorbing body (38), the fan (24), electric motor (27) and electric heating elements (31) being placed inside a cylindrical chamber (32-33) matching at its two respective ends with the back grille (22) for air entry and with the front grille (12) through which air leaves the apparatus, the absorbing body (38) being placed between one end of said chamber (32-33) and the back air entry grille, the whole purpose being to warm and humidify environmental air simultaneously.

Description

ELECTRIC HEATER FAN FOR HEATING AND HUMIDIFYING ENVIRONMENTAL AIR.
The so-called heater fans, namely forced convection elec¬ tric stoves in which an electrically operated fan creates a draught of air around incandescent electric heating ele¬ ments, are in every-day use. Cold air comes in and warm air comes out.
Also normally used are the so-called humidifiers, namely apparatuses for humidifying air that is too dry in the home or place of work, such as the "wet surface"types in which a wetted surface meets a flow of air that consequently produ¬ ces vapour .
When a room is being heated, especially by a heater fan, it becomes necessary, or at any rate advisable, to bring humidity back to a good level by using an air humidifier.
This however, doubles both purchasing and operating costs and involves complications due to the difficulty of adjust¬ ing how the two apparatuses, with interdependent effects, work so that air is conditioned in the best possible way.
The above invention eliminates or considerably reduces these drawbacks while offering great advantages at the same time as will be explained below.
Subject of the invention is a heater fan in which the cur¬ rent of air generated by the fan is subjected to the ef- fects of a humidifier for the purposes of heating a room and humidifying the air at the same time.
The heat generator is a set of electric elements arranged spokewise, placed between the fan and the humidifier, con¬ centric to the axis of the fan. The humidifier consists of an absorbing body connected to he water in a tank, air from the fan reaching said absorb- ing body and steam being produced by contact between the air and the absorbed water.
The absorbing body, subs antially flat and through which holes are bored, is placed transversally to the stream of air from the fan and absorbs water from a shallow container communica ing with the water tank through an aperture made low down in said tank.
The tank is water tight so that, due to atmospheric pres¬ sure, the water level in the shallow container is kept as high as the upper έdge of the aperture through to the tank and maintained at that level as the absorbing body sucks up water when evaporation caused by the stream of air makes this necessary . The fan, electric motor, heat generator and absorbing body in the humidifier are all aligned on a single axis between the apparatus's two grills one at air entry point and the other at air exit point.
The heat generator, electric motor and fan are placed in¬ side a cylindrical chamber whose two ends lie respectively against the grills through which air enters and leaves the apparatus .
The shape of the water tank is subs antially that of a pa¬ rallelepiped while the shallow container and the absorbing body stand at about 90° in relation to said tank near one of its vertical sides.
Said tank can therefore be placed parallel to the cylindri¬ cal chamber where the air circulates, and the absorbing bo¬ dy can be placed at one end of said chamber next to the air entry grille making a compact apparatus of minimum bulk Charac eristics and purposes of the invention will be made even clearer by the following example of its execution il- lustrated by diagrammatic drawings.
Fig. 1 Perspective view of the front of the invented ap¬ paratus seen from the outside. Fig. 2 The outside of the apparatus seen from the back. Fig. 3 An exploded view of the apparatus seen from the front . The invented apparatus comprises a substan ially paralle¬ lepiped box-like body 10, with a front end 11 including a grille 12. At one side of said grille there is a rectangular window 13. A vertical diaphragm 20, with grille 21, is fixed by means of spacing p ns 14 to the inner wall of said front. The heater fan unit 25 is fixed frontally at the centre of said grille; said unit comprises a frame 26 carrying the electric motor 27 centrally and, on its circular edge, by means of spacers 28, the pair of crowns 29 and 30 made of insulating material on which is mounted the set 31 of elec¬ tric elements arranged spoke-wise. The fan 24 is mounted on the shaft of the motor. The horizontal cylinder 32 is mounted on the front surface of the diaphragm 20, said cylinder enclosing the heater fan unit 25 and extending from the diaphragm 20 to the in¬ ner surface of the front piece 11.
The back end 15 of the apparatus includes a grille 22. The parallelepiped tank 16 for liquids is placed on one side of the box-like body 10 in such a way that the side 17 matches with the window 13 on the front I I of the apparatus Said tank is removeable.
At least that side 17 is made of transparent material so that the level 23 of the liquid 34 in "the tank is always visible through the above window 13. On the side 18 of the tank, close to the lower back cor¬ ner, there is a low rectangular horizontal aperture 19 which is the only opening in the tank when a filling-up plug, not .shown, is closed. Against this aperture a horizontal rectangular shallow con¬ tainer 35set at an angle of 90°, fits onto side 18 of the tank. On the short sides of said shallow container, there are channel-shaped uprights 36,37, placed vertically, one on each of said sides. Between these two uprights stands the flat absorbing body 38, quadrangular in shape with perforations 39, said body resting on the floor of the shallow container 35. Said absorbing body stands at a short distance from the back grille 22 of the apparatus. A horizontal cylinder 33 is fixed to the back face of the diaphragm 20 and aligned with cylinder 32, of the same dia¬ meter, fixed to the front face.
Said second cylinder 33 extends substantially as far as the absorbing body 38 standing in the shallow container 35. The heater unit 25, with fan, electric motor and spokewise electric heating elements, the front grille 12, the grille 21 on the internal diaphragm, the absorbing body 38 and the back grille 22 are all aligned on the same axis. The cylinders 32, 33 between the front grille 12 and the grille 21 on the internal diaphragm 20 between this latter and the absorbing body 38 are also aligned on this same axis A kind of cylindrical chamber 32-33 is thus created, extend¬ ing from the front grille 12 to the back grille 22, which houses the heater fan unit 25 and through which passes the perforated assorbing body.
The unit composed of the tank and shallow container can be pulled out from the apparatus for filling up with water 34.
The apparatus is set in motion by the switch 40 on the top. Controls and various devices, not shown in the figures for the sake of simplicity, are used to regulate motor speed, total power of the electric heating elements and level of humidity, while, if desired, forced ventilation, heating or humidification can be turned off. Operation
The tank is filled with water, overturned and fitted into the apparatus. The shallow container is kept full of wa¬ ter by gravity as this flows through the communicating ap¬ erture to a level as high as the top edge of said aperture but not higher, said aperture being the only communication with the atmosphere. The body 38 absorbs water from the shallow container in which it is '.immersed until fully saturated; then, when the apparatus is working, it continues to replenish itself from the container to make up for loss of water due to evapora¬ tion accentuated by the stream of air. The level of water in the container is automatically maintained by inflow through the communicating aperture to the tank. Having put the apparatus into operation by starting up the fan and switching on the heating elements, the fan blades create a flow of air from the back grille 22 to the front grille 12 through the intermediate grille 21.
Immediately beyond the back grille, said stream of air pas¬ ses through the perforated absorbing body taking up mois¬ ture, then onto the inner grille and the electric heating elements which warm it. Thus cold air enters at the back grille and emerges warm and moist from the front grille. By working the various control devices, the degree of heating and moisture can be adjusted at will. Advantages
The advantages are clearly evident.
By means of a single apparatus and one electric fan only air in a room can be warmed and humidified at the same time, the one apparatus doing the two functions hitherto requiring two separate ones, namely a fan heater and a humidifier. Air dried out by electric elements is no longer put into the atmosphere as at present happens with ordinary heater fans .
The user therefore benefits from a considerable reduction in purchasing and running costs, at the same time provi¬ ding the air he breathes with the proper amount of mois- ture as well as heat, obtaining a satisfactory level of conditionin .

Claims

C l a i ms
1. Heater fan characterized in that the draught of air created by the fan (24) worked by an electric motor (27) is subjected to the effect of a humidifier for the purpose heating environmental air and humidifying it at the same t ime .
2. Heater fan as in claim 1, characterized in that the heat is generated by electric heating elements.
3. Heater fan as in claim 1, characterized in that the heat generator is placed between the fan (24) and the hu¬ midifier.
4. Heater fan as in claim 1, characterized in that the heat generator consists of electric heating elements (31) arranged spokewise, concentric with the axis of the fan (24).
5. Heater fan as in claim 1 characterized in that the hu¬ midifier consists of an absorbing body (38) placed in touch with the water (34) in a tank ( 16), said body receiving the draught of air caused by the fan (24), giving rise to steam formed by action of the air on the water absorbed.
6. Heater fan as in claim 5 characterized in that the ab¬ sorbing body (38) is substantially flat,has perforations (39)and is placed transversally to the stream of air produced by the fan ( 17) .
7. Heater fan as in claims 5 and 6, characterized in that the absorbing body (38) sucks up water in a shallow container 35 communica ing with the tank ( 16) through an aperture ( 19) made low down in said tank, the top edge of the aperture be¬ ing lower than the edge of the shallow container (35), said tank ( 16) being water tight so that, due to the effect of atmospheric pressure, the water level in said container (35) is kept at a level higher than that of the aperture ( 19) communicating with the tank (16) with automatic refill of water sucked up by the absorbing body (38) when evapo¬ ration caused by the stream of air takes place.
8. Heater fan as in claims 1 and 5, characterized in that the fan (24), the electric motor (27), the heat generator and the absorbing body (38) are all aligned on the same axis between the entry grille (22) and the exit grille (12) for the draught of air set up by the fan (24).
9. Heater fan as in claim 1, characterized in that the heat generator, the electric motor (27) and the fan (24) are placed inside a cylindrical chamber (32-33) matching at the two ends respectively with the entry grille (22) and the exit grille (12 ) for air from the apparatus.
10. Heater fan as in claims 5, 6, 7, 9, characterized in that the shape of the water tank ( 16) is substan ially that of a parallelepiped, with the shallow container (35) and the absorbing body (38) set at an angle of practically 90° in relation to said tank (16) close to one of its vertical sides so that the tank (16) lies parallel to the cylindri¬ cal chamber (32-33) and the absorbing body (38) stands be¬ tween one end of said chamber and the back grille (22), thus achieving a highly compact apparatus occupying a mi¬ nimum of space .
PCT/IT1988/000082 1988-10-07 1988-11-16 Electric heater fan for heating and humidifying environmental air WO1990004137A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT22242A/88 1988-10-07
IT8822242A IT1227961B (en) 1988-10-07 1988-10-07 ENVIRONMENTAL AIR HEATING AND HUMIDIFICATION APPLIANCE BY ELECTROVENTILATION

Publications (1)

Publication Number Publication Date
WO1990004137A1 true WO1990004137A1 (en) 1990-04-19

Family

ID=11193553

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT1988/000082 WO1990004137A1 (en) 1988-10-07 1988-11-16 Electric heater fan for heating and humidifying environmental air

Country Status (3)

Country Link
AU (1) AU2728288A (en)
IT (1) IT1227961B (en)
WO (1) WO1990004137A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021008594A1 (en) * 2019-07-16 2021-01-21 广东东方麦田工业设计股份有限公司 Split-type air heater/humidifier
WO2022142362A1 (en) * 2020-12-29 2022-07-07 余旦 Multifunctional efficient humidification structure

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH488153A (en) * 1968-10-23 1970-03-31 Luftbefeuchtung Ges Mit Beschr Electrically powered humidifier
DE1604132A1 (en) * 1964-09-15 1970-08-27 British Sarozal Ltd Air conditioning device (air conditioner)
CH517918A (en) * 1969-05-21 1972-01-15 Zeier H Air conditioner
SE346155B (en) * 1967-06-07 1972-06-26 Technicair Sa
AU4251672A (en) * 1971-05-31 1973-12-20 Lucky Hunter Ventilator system
DE2447841B2 (en) * 1974-10-08 1981-02-19 Stiebel Eltron Gmbh & Co Kg, 3450 Holzminden Air conditioners, in particular dehumidifiers
US4401013A (en) * 1980-05-06 1983-08-30 Nissan Motor Co., Ltd. Air conditioning device
EP0190966A1 (en) * 1985-01-30 1986-08-13 Seb S.A. Convector with an electric resistance heater having air humidification means
DE2855273C2 (en) * 1978-12-21 1988-03-03 Karl Hermann 7500 Karlsruhe De Hornung

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1604132A1 (en) * 1964-09-15 1970-08-27 British Sarozal Ltd Air conditioning device (air conditioner)
SE346155B (en) * 1967-06-07 1972-06-26 Technicair Sa
CH488153A (en) * 1968-10-23 1970-03-31 Luftbefeuchtung Ges Mit Beschr Electrically powered humidifier
CH517918A (en) * 1969-05-21 1972-01-15 Zeier H Air conditioner
AU4251672A (en) * 1971-05-31 1973-12-20 Lucky Hunter Ventilator system
DE2447841B2 (en) * 1974-10-08 1981-02-19 Stiebel Eltron Gmbh & Co Kg, 3450 Holzminden Air conditioners, in particular dehumidifiers
DE2855273C2 (en) * 1978-12-21 1988-03-03 Karl Hermann 7500 Karlsruhe De Hornung
US4401013A (en) * 1980-05-06 1983-08-30 Nissan Motor Co., Ltd. Air conditioning device
EP0190966A1 (en) * 1985-01-30 1986-08-13 Seb S.A. Convector with an electric resistance heater having air humidification means

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021008594A1 (en) * 2019-07-16 2021-01-21 广东东方麦田工业设计股份有限公司 Split-type air heater/humidifier
WO2022142362A1 (en) * 2020-12-29 2022-07-07 余旦 Multifunctional efficient humidification structure

Also Published As

Publication number Publication date
IT1227961B (en) 1991-05-20
IT8822242A0 (en) 1988-10-07
AU2728288A (en) 1990-05-01

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