CA1110309A - Forced flow air heater with a housing - Google Patents
Forced flow air heater with a housingInfo
- Publication number
- CA1110309A CA1110309A CA298,306A CA298306A CA1110309A CA 1110309 A CA1110309 A CA 1110309A CA 298306 A CA298306 A CA 298306A CA 1110309 A CA1110309 A CA 1110309A
- Authority
- CA
- Canada
- Prior art keywords
- housing
- wall
- air inlet
- air
- cylindrical element
- 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.)
- Expired
Links
Classifications
-
- 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
- F24H3/0417—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 portable or mobile
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Thermal Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Direct Air Heating By Heater Or Combustion Gas (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Thermotherapy And Cooling Therapy Devices (AREA)
- Electric Stoves And Ranges (AREA)
- Cookers (AREA)
- Baking, Grill, Roasting (AREA)
- Air-Flow Control Members (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE:
The specification describes a forced flow air heater adapted for mounting on a wall and having an electric heating element and inlet and outlet openings covered by grilles. The inlet and outlet openings are arranged coaxially in the rear and front walls of the housing and between them an axial fan is arranged in the housing.
The specification describes a forced flow air heater adapted for mounting on a wall and having an electric heating element and inlet and outlet openings covered by grilles. The inlet and outlet openings are arranged coaxially in the rear and front walls of the housing and between them an axial fan is arranged in the housing.
Description
3~39 The invention relates to a wall-mo-mting forced flow air heater with a housing for accommodating a fan and an electrical heating element and furthermore inlet and outlet air openings covered b~ grilles.
In the case of orced flow air heaters of this type a construction has already been proposed in which radial blowers or tangential blowers are arranged in the housing. Such blowers are constructed in the form of self-contained units and as such , are encompassed by the housing of the forced flow air heater.
Apart from the fact that such blowers are costly to manufacture for wall mounting heaters, the prior art wall mounting heaters also involve substantial expense.
One aim of the invention is that of providing a wall mountin~ forced flow air heater with a simple construction.
A further object of the invention is that of improving the rate at which air is blown through the heater.
In order to achieve the above and other aims of the invention, the latter is herein claimed as a forced flow air heater for mounting on a wall, comprising: a housing having spaced front and rear walls; air inlet means formed through said rear wall; a heater and an air flow fan inside said housing and mounted over said rear wall air inlet means, said air flow fan having an air flow impell~r~ characterized in that: said front wall is formed with an air flow opening having circumscribing edges and provided forwardly of said rear wall air inlet means;
in that a front louver frame is mounted on said front wall circumscribing edges; in that said front louver frame com-prises: a series of spaced louver elements extending across said front wall air flow opening and a cylindrical element having a front and a rear opening and mounted on said front louver frame to extend inwardly of said housing a distance sufficient to enclose said air flow impeller, said cylindrical element termina-,. ..
.
13g~9 ting short of said housing rear wall and said impeller having a diameter smaller than that of said cylindrical element to be enclosed freely therein; in that the diametral size of said cylindrical element is smaller than said louver frame whereby an air inlet zone is formed outwardly of and around said cylindrical element and through said housing front wall in addition to said rear wall air inlet means, and in that spacer means are provided in said rear walll outwardly of said housing, to hold said housing away from a wall on which said air heater is to be mounted.
The invention will now be described with reference to the drawings accompanying the speciEication showing different embodiments. ;
Figure 1 shows a wall mounting forced flow air heater from the front.
Figure 2 shows a wall mounting forced flow air heater from the side and partly in section.
Figure 3 shows a louver with housing sections from the front end on a larger scale. ~ `
Figure 4 shows a louver with housing sections from the side and on a laxger scale.
Figure 5 shows a partial section of a louver.
Figure 6 shows a part section of a further louver.
Figure 7 shows a part section o~ a louver of a dif-ferent construction.
Figure 8 shows a heating element from the front and on a larger scale.
Figure 9 shows a louver in plan view.
Reference numeral 1 denotes a substantially prismatic housing made of a metallic material or of plastic and having a front and a rear wall. The housing 1 can be mounted on wall surfaces and is provided with rear spacers 2 to hold it clear
In the case of orced flow air heaters of this type a construction has already been proposed in which radial blowers or tangential blowers are arranged in the housing. Such blowers are constructed in the form of self-contained units and as such , are encompassed by the housing of the forced flow air heater.
Apart from the fact that such blowers are costly to manufacture for wall mounting heaters, the prior art wall mounting heaters also involve substantial expense.
One aim of the invention is that of providing a wall mountin~ forced flow air heater with a simple construction.
A further object of the invention is that of improving the rate at which air is blown through the heater.
In order to achieve the above and other aims of the invention, the latter is herein claimed as a forced flow air heater for mounting on a wall, comprising: a housing having spaced front and rear walls; air inlet means formed through said rear wall; a heater and an air flow fan inside said housing and mounted over said rear wall air inlet means, said air flow fan having an air flow impell~r~ characterized in that: said front wall is formed with an air flow opening having circumscribing edges and provided forwardly of said rear wall air inlet means;
in that a front louver frame is mounted on said front wall circumscribing edges; in that said front louver frame com-prises: a series of spaced louver elements extending across said front wall air flow opening and a cylindrical element having a front and a rear opening and mounted on said front louver frame to extend inwardly of said housing a distance sufficient to enclose said air flow impeller, said cylindrical element termina-,. ..
.
13g~9 ting short of said housing rear wall and said impeller having a diameter smaller than that of said cylindrical element to be enclosed freely therein; in that the diametral size of said cylindrical element is smaller than said louver frame whereby an air inlet zone is formed outwardly of and around said cylindrical element and through said housing front wall in addition to said rear wall air inlet means, and in that spacer means are provided in said rear walll outwardly of said housing, to hold said housing away from a wall on which said air heater is to be mounted.
The invention will now be described with reference to the drawings accompanying the speciEication showing different embodiments. ;
Figure 1 shows a wall mounting forced flow air heater from the front.
Figure 2 shows a wall mounting forced flow air heater from the side and partly in section.
Figure 3 shows a louver with housing sections from the front end on a larger scale. ~ `
Figure 4 shows a louver with housing sections from the side and on a laxger scale.
Figure 5 shows a partial section of a louver.
Figure 6 shows a part section of a further louver.
Figure 7 shows a part section o~ a louver of a dif-ferent construction.
Figure 8 shows a heating element from the front and on a larger scale.
Figure 9 shows a louver in plan view.
Reference numeral 1 denotes a substantially prismatic housing made of a metallic material or of plastic and having a front and a rear wall. The housing 1 can be mounted on wall surfaces and is provided with rear spacers 2 to hold it clear
- 2 -~L~L O ~
of the wall. Between the coaxial air inlet opening 3 and the air outlet opening 5 of the rear and front housing walls respectively, there is a coaxially arranged axial fan 6 accommo-dated in the housin~ 1. The outlet air opening 5 is covered by a louver frame 4. Reference numeral 7 denotes the fan motor.
The fan motor 7 is held in a central opening or recess 8 in the heating element 9. On connecting up the fan motor 7 with the electricity line, for example by means of a switch actuated by a switching knob 10 the fan causes air to pass via the inlet opening 3 through the heating element 9 and furthermore to the outlet opening 5. Here the air passes through the spaces between the louver elemPnts 4' of the louver frame 4.
The heating element ~ can be controlled by means of a switching knob 11. This switching knob furthermore sets a thermostat. References 12 and 12' denote checking lamps which indicate the operating settings.
The louver frame 4 of figures 1 and 2 is formed by a chassis 4" to which are fixed the number of parallel louver elements 4', which ma~ have flat and/or oblique surfacesO
In the case of the louver frames of figures 5 to 7 the louver elements 4' are oblique or for parts of their lengths they are angled so that the outlet flow is directed perpendicularly or obliquely with respect to the front side of the housing.
The construction and alignment of the louver elements 4' is preferably so selected that in the case of manufacture using plastics a simply demolding from the injection molding tool is made possible and simple tools can be used.
A cylindrical element 15 is made integrally with the louver frame 4, as is shown more particularly in figures 3 and 4.
This cylindrical element 15 extends for part of the depth of the housing 1. The fan impeller 6' extends into the cylindrical element 15 so that it is able to turn freely. The diametral size of the cylindrical element 15 is smaller than the louver frame 4 so as to form, on the inside, a zone for the expelled air and, on the outside, zones 13 ~or additional entry of air into the housing 1~
Pins 19 can connect the louver frame 4 with the cir-cumscribing edges o~ the front housing parts 1' and 1" , being inserted with a detent action in pocket-like molded parts 20 (see fiyures 3 and 4). :~
, The heating element 9 is formed by a number of carriers 9' and a helical heating wire 16 (see figure 8). The ~ ;
carriers 9' are arranged fixedly on the stellate arms of a sheet ~ :.
metal molding 17, which simultaneously holds the fan motor 7 and a switch 18 for preventing overheating. It can be connected with the housing 1.
_ 4 _ .
.. . ..
of the wall. Between the coaxial air inlet opening 3 and the air outlet opening 5 of the rear and front housing walls respectively, there is a coaxially arranged axial fan 6 accommo-dated in the housin~ 1. The outlet air opening 5 is covered by a louver frame 4. Reference numeral 7 denotes the fan motor.
The fan motor 7 is held in a central opening or recess 8 in the heating element 9. On connecting up the fan motor 7 with the electricity line, for example by means of a switch actuated by a switching knob 10 the fan causes air to pass via the inlet opening 3 through the heating element 9 and furthermore to the outlet opening 5. Here the air passes through the spaces between the louver elemPnts 4' of the louver frame 4.
The heating element ~ can be controlled by means of a switching knob 11. This switching knob furthermore sets a thermostat. References 12 and 12' denote checking lamps which indicate the operating settings.
The louver frame 4 of figures 1 and 2 is formed by a chassis 4" to which are fixed the number of parallel louver elements 4', which ma~ have flat and/or oblique surfacesO
In the case of the louver frames of figures 5 to 7 the louver elements 4' are oblique or for parts of their lengths they are angled so that the outlet flow is directed perpendicularly or obliquely with respect to the front side of the housing.
The construction and alignment of the louver elements 4' is preferably so selected that in the case of manufacture using plastics a simply demolding from the injection molding tool is made possible and simple tools can be used.
A cylindrical element 15 is made integrally with the louver frame 4, as is shown more particularly in figures 3 and 4.
This cylindrical element 15 extends for part of the depth of the housing 1. The fan impeller 6' extends into the cylindrical element 15 so that it is able to turn freely. The diametral size of the cylindrical element 15 is smaller than the louver frame 4 so as to form, on the inside, a zone for the expelled air and, on the outside, zones 13 ~or additional entry of air into the housing 1~
Pins 19 can connect the louver frame 4 with the cir-cumscribing edges o~ the front housing parts 1' and 1" , being inserted with a detent action in pocket-like molded parts 20 (see fiyures 3 and 4). :~
, The heating element 9 is formed by a number of carriers 9' and a helical heating wire 16 (see figure 8). The ~ ;
carriers 9' are arranged fixedly on the stellate arms of a sheet ~ :.
metal molding 17, which simultaneously holds the fan motor 7 and a switch 18 for preventing overheating. It can be connected with the housing 1.
_ 4 _ .
.. . ..
Claims
The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:
A forced flow air heater for mounting on a wall, com-prising: a housing having spaced front and rear walls; air inlet means forming an air inlet zone through said rear wall;
a heater and an air flow fan inside said housing and mounted forwardly of said rear wall air inlet means, said air flow fan having an air flow impeller, characterized in that: said front wall is formed with an air flow opening having circumscribing edges and provided forwardly of said rear wall air inlet means;
in that a front louver frame is mounted on said front wall circumscribing edges; in that said front louver frame comprises:
a chassis; a series of spaced louver elements mounted on said chassis and extending across said front wall air flow opening and a cylindrical element having a front and a rear opening and mounted on said chassis perpendicularly thereof to extend inwardly of said housing a distance sufficient to enclose said air flow impeller, said outlet opening of said cylindrical element terminating short of said housing rear wall and said impeller having a diameter smaller than that of said cylindrical element to be enclosed freely therein; in that the diametral size of said cylindrical element is smaller than said chassis whereby an air inlet zone is formed outwardly of and around said cylindrical element and through said housing front wall in addition to the air inlet zone of said rear wall air inlet means, and in that spacer means are provided in said rear wall, outwardly of said housing, to hold said housing away from a wall on which said air heater is to be mounted.
A forced flow air heater for mounting on a wall, com-prising: a housing having spaced front and rear walls; air inlet means forming an air inlet zone through said rear wall;
a heater and an air flow fan inside said housing and mounted forwardly of said rear wall air inlet means, said air flow fan having an air flow impeller, characterized in that: said front wall is formed with an air flow opening having circumscribing edges and provided forwardly of said rear wall air inlet means;
in that a front louver frame is mounted on said front wall circumscribing edges; in that said front louver frame comprises:
a chassis; a series of spaced louver elements mounted on said chassis and extending across said front wall air flow opening and a cylindrical element having a front and a rear opening and mounted on said chassis perpendicularly thereof to extend inwardly of said housing a distance sufficient to enclose said air flow impeller, said outlet opening of said cylindrical element terminating short of said housing rear wall and said impeller having a diameter smaller than that of said cylindrical element to be enclosed freely therein; in that the diametral size of said cylindrical element is smaller than said chassis whereby an air inlet zone is formed outwardly of and around said cylindrical element and through said housing front wall in addition to the air inlet zone of said rear wall air inlet means, and in that spacer means are provided in said rear wall, outwardly of said housing, to hold said housing away from a wall on which said air heater is to be mounted.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2744639A DE2744639B2 (en) | 1977-10-04 | 1977-10-04 | Wall fan heater |
| DEP2744639.5 | 1977-10-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1110309A true CA1110309A (en) | 1981-10-06 |
Family
ID=6020634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA298,306A Expired CA1110309A (en) | 1977-10-04 | 1978-03-03 | Forced flow air heater with a housing |
Country Status (15)
| Country | Link |
|---|---|
| AT (1) | AT355147B (en) |
| AU (1) | AU513413B2 (en) |
| BE (1) | BE867337A (en) |
| CA (1) | CA1110309A (en) |
| CH (1) | CH627540A5 (en) |
| DE (1) | DE2744639B2 (en) |
| ES (1) | ES464770A1 (en) |
| FR (1) | FR2405442B1 (en) |
| GR (1) | GR63073B (en) |
| IT (1) | IT1090576B (en) |
| NL (1) | NL7714049A (en) |
| NO (1) | NO781856L (en) |
| SE (1) | SE7802881L (en) |
| YU (1) | YU112378A (en) |
| ZA (1) | ZA783097B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3010890A1 (en) * | 1980-03-21 | 1981-10-01 | Petz Electro, 3185 Schmitten | Wall-mounted fan heater - has rearwards extension with additional inlets over recess in upright sidewall |
| DE3103427A1 (en) * | 1981-02-02 | 1982-08-26 | Petz Electro, 3185 Schmitten | Fan heater with an axial blower |
| CA1231748A (en) * | 1985-02-11 | 1988-01-19 | Kosta Pelonis | Electric heater employing semiconductor heating elements |
| DE102011116066A1 (en) * | 2011-10-18 | 2013-04-18 | André Thomas | Eco-hot air blower for blowing hot air into room, has heater coils which are switchable on and off by intermediate switch for specific short time period, where heater coils output specific heat energy with specific energy consumption |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE7129129U (en) * | 1900-01-01 | Devappa Zinsser R & Prestl K | Fan heater | |
| DE1120098B (en) * | 1960-01-29 | 1961-12-21 | Licentia Gmbh | Fan heater with room temperature controller arranged in a secondary air flow |
| DE6601980U (en) * | 1966-03-25 | 1969-04-10 | Siemens-Electrogeraete Gmbh | ROOM HEATER |
| DE2512221B2 (en) * | 1975-03-20 | 1977-07-07 | Forbach Gmbh & Co Kg, 8740 Bad Neustadt | ELECTRICALLY HEATED PORTABLE ROOM HEATER |
-
1977
- 1977-10-04 DE DE2744639A patent/DE2744639B2/en not_active Ceased
- 1977-10-21 AT AT753477A patent/AT355147B/en not_active IP Right Cessation
- 1977-11-02 CH CH1334677A patent/CH627540A5/en not_active IP Right Cessation
- 1977-11-04 IT IT51684/77A patent/IT1090576B/en active
- 1977-12-06 ES ES464770A patent/ES464770A1/en not_active Expired
- 1977-12-19 NL NL7714049A patent/NL7714049A/en not_active Application Discontinuation
-
1978
- 1978-01-23 GR GR55245A patent/GR63073B/en unknown
- 1978-01-30 FR FR7802561A patent/FR2405442B1/en not_active Expired
- 1978-02-21 AU AU33475/78A patent/AU513413B2/en not_active Expired
- 1978-03-03 CA CA298,306A patent/CA1110309A/en not_active Expired
- 1978-03-14 SE SE7802881A patent/SE7802881L/en unknown
- 1978-05-11 YU YU01123/78A patent/YU112378A/en unknown
- 1978-05-22 BE BE187923A patent/BE867337A/en not_active IP Right Cessation
- 1978-05-29 NO NO781856A patent/NO781856L/en unknown
- 1978-05-30 ZA ZA00783097A patent/ZA783097B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR2405442B1 (en) | 1985-08-02 |
| IT1090576B (en) | 1985-06-26 |
| SE7802881L (en) | 1979-04-05 |
| YU112378A (en) | 1983-01-21 |
| AT355147B (en) | 1980-02-11 |
| DE2744639B2 (en) | 1980-11-06 |
| BE867337A (en) | 1978-09-18 |
| ZA783097B (en) | 1979-05-30 |
| ES464770A1 (en) | 1978-09-01 |
| NL7714049A (en) | 1979-04-06 |
| ATA753477A (en) | 1979-07-15 |
| GR63073B (en) | 1979-08-08 |
| NO781856L (en) | 1979-04-05 |
| CH627540A5 (en) | 1982-01-15 |
| DE2744639A1 (en) | 1979-04-05 |
| AU513413B2 (en) | 1980-11-27 |
| FR2405442A1 (en) | 1979-05-04 |
| AU3347578A (en) | 1979-08-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |