CA2014188A1 - Heater blower such as an electric hair dryer or the like, with ptc resistors - Google Patents
Heater blower such as an electric hair dryer or the like, with ptc resistorsInfo
- Publication number
- CA2014188A1 CA2014188A1 CA 2014188 CA2014188A CA2014188A1 CA 2014188 A1 CA2014188 A1 CA 2014188A1 CA 2014188 CA2014188 CA 2014188 CA 2014188 A CA2014188 A CA 2014188A CA 2014188 A1 CA2014188 A1 CA 2014188A1
- Authority
- CA
- Canada
- Prior art keywords
- resistance
- resistances
- electric
- fan
- heating means
- 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.)
- Abandoned
Links
Landscapes
- Direct Air Heating By Heater Or Combustion Gas (AREA)
- Cleaning And Drying Hair (AREA)
Abstract
NHL-PMG-03 Canada HEATER BLOWER SUCH AS AN ELECTRIC HAIR DRYER OR THE
LIKE, WITH PTC RESISTORS
ABSTRACT OF THE DISCLOSURE
Heater blower, hair dryer, hand-held hair dryer, hot air fan or electrical space heater, which uses circulating air with a fan or blower, and the volume of whose current can be modified by means of throttle elements .
The heater elements have a pronounced PTC characteristic, and are electrically connected upstream of the fan , so that the speed of the fan is automatically adjusted to the heating power to be delivered.
LIKE, WITH PTC RESISTORS
ABSTRACT OF THE DISCLOSURE
Heater blower, hair dryer, hand-held hair dryer, hot air fan or electrical space heater, which uses circulating air with a fan or blower, and the volume of whose current can be modified by means of throttle elements .
The heater elements have a pronounced PTC characteristic, and are electrically connected upstream of the fan , so that the speed of the fan is automatically adjusted to the heating power to be delivered.
Description
2 ~
NHL-PMG~03 Canada HEATER BLOWER SUCH AS AN ELECTRIC HAIR DRYER OR THE
LIKE, WITH PTC RESISTORS
BACKGROUND O~ THE INVENTION
1. Field of the Invention:
This invention relates to heaters with resistors and more particularly PCT resistors.
2. Back~round Information:
Heater blowers of modern design, in place of normal heating resistors, have so-called PTC (positive temperature coefficient) resistors, which have the advantage that they cannot normally in many usual applications become overheated since, as the temperature increases the resistance thereof also increases, which action usually produces a self-regulating action even when the heat dissipation from the resistors is decreased whereby the PCT resistors do not readily overheat. Behind the PTC resistors there is often a fan. This fan transports the air to be heated typically through holes in the PTC resistors, for example.
OBJECT OF THE INVENTION
The object of the invention is to make possible a simple regulation of the heat output of heater blowers in the simplest possible manner and without the use of special electronic power regulation instruments or circuits.
SUMMARY OF THE INVENTION
The arrangement of an air flow control element, which throttles the air stream and which is located (e.g. an iris diaphragm or shutter~ in the air current between the ventilator or fan and the PTC resistor of a section of the voltage divider, keeps away the cooling air from the resistor in question. This PCT resistor thereby heats up, as a result of which its lnternal electrical resistance increases. The portion of the total voltage across the PTC resistor taken across the section of the voltage divider in which the PTC resistor is connected could 2 9 ~
NHL-PMG-03 Canada theoretically be fed directly to an alternating current fan motor. Such an alternating current arrangement maybe a disadvantage in some specific applications because the speed of alternating current fan motors can usually only be regulated rather approximately and often, depending upon the design of the A-C motor, to a very limited extent by means changes of the operating voltage. However, it is definitely within the scope of the present invention to include A-C motors for the purpose of driving the fan of the embodiments of the present invention.
Therefore, in an alternative embodiment of the invention, a fan with a direct current motor is used.
Additional details and alternative embodiments of the invention are indicated in the following description and with reference to the embodiment illustrated in the accompanying drawings.
One aspect of the invention resides broadly in an electric hair dryer comprising: electric resistance heating device for connection to a source of electricity; a fan having a motor, the fan for blowing air by at least a portion of the electric resistance heating device; the electric resistance heater device comprising a plurality of resistances; at least one of the resistances comprising a first resistance; the first resistance comprising a positive temperature coefficient resistance; the first resistance for increasing in resistance as a temperature of the first resistance increases and first resistance for decreasing in resistance as the temperature of the first resistance decreases; at least a portion of the plurality of resistances comprising a voltage dlvider; the first resistance comprising one of the resistances of the voltage divider; and at least one of the plurality of resistances being connected in series with the first resistance; and device for directing air heated by the heating means to hair.
NHL-PMG-03 Canada Another aspect of the invention resides broadly in a fireplace insert having an electric heater, the fireplace insert comprising: a body for containing electric heating device;
electric resistance heating device disposed in the body;
the electric resistance heating device for connection to a source of electricity a fan for blowing air by at least a portion of the electric resistance heating device; the electric resistance heater device comprising a plurality of resistances; at least one of the resistances comprising a first resistance; the first resistance comprising a positive temperature coefficient resistance; the first resistance for increasing in resistance as a temperature of the first resistance increases and first resistance for decreasing in resistance as the ~emperature of the first resistance decreases; at least a portion of the plurality of resi.stances comprising a voltage divider; the first resistance comprising one of the resistances of the voltage divider; at least one of ~he plurality of resistances being connected in series with the first resistance; and device for directing heat from the electric heating device to an area in which the fireplace insert is installable.
Yet another aspect of the invention resides broadly in an electric heater blower comprising: a body for containing electric heating device; electric resistance heating device disposed in the body; the electric resistance heating device for connection to a source of electricity a fan for blowing air by at least a portion of the electric resistance heating device; the electric resistance heater device comprising a plurality of resistances;
at least one of the resistances comprising a first resistance;
the first resistance comprising a positive temperature coefficient resistance; the first resistance for increasing in resistance as a temperature of the first resistance increases and first resistance for decreasing in resistance as the temperature 2 ~
N~L-PMG-03 Canada of the first resistance decreas~s; at least a portion of the plurality of resistances comprising a voltage divider; the first resistance comprising one of the resistances of the voltage divider; and at least one of the plurality of resistances being connected in series with the first resistance; device for directing air heated by the heating device from the body.
BRIEF DESCRIPTIQN O~ THE DRAWINGS
Figure 1 is a schematic illustration of a heater blower according to an embodiment of the invention.
Figure 2 is a schematic illustration of a fireplace or other source of heat for a room.
DESCRIPTION OF THE PREFERRED EMBODIMENT
Figure 1 is a schematic illustration of a heater blower according to the invention. Via lines 3 and 4, an alternating current, e.g. 220 or 115 V, is fed to a voltage divider. The voltage divider consists of at least two resistors 1 and 2 connected in series, whereby at least the upper shown resistor l in Figure l is preferably a PTC resistor, and the lower shown resistor 2 may also preferably be a PTC resistor. The operating voltage for the fan 7 is tapped at a contact point 13 between the two resistors 1 and 2 and at the other end 14 of the resistor 2, preferably rectified by means of the downstream rectifier 5, and conducted to the fan 7, which is preferably a direct current fan.
In the event an A-C motor is used the rectifier 5 could be dispersed with. A capacitor 6 (shown in dotted lines) can, for example, be connected downstream of the rectifier 5 to smooth the direct current voltage obtained in this manner.
This invention is based on the knowledge that the voltage divider ratio from the resistors 1 and 2 can preferably be esse~tially modified by using preferably a throttle element such as a slide, iris diaphragm, or the like in the area of the resistor 1 which resistor thus is kept away either totally or NHL-PMG-03 Canada partially from the full or partial flow of the cooling air current 12. This resistor 1 is thereby heated up, which causes its internal resistance to increase. Consequently, the voltage drop in the other area of the voltage divider, in Figure 1 resistor 2, becomes smaller, so that the speed of rotation of the fan 7~ connected across the resistor 2, decreases. With the decrease in the speed of rotation, there is preferably, according to the invention, an automatic reduction of the heating output of the heater blower. To regulate the heating output, a throttle element 8, as described above is preferably used, which reduces the air flow over one section of the voltage divider, which consists of a resistor 1 or a series circuit of PTC reslstors 1 and ll. This can be accomplished in a simple manner, eg. by means of an iris diaphragm or another arrangement of the prior art. The resistor 11 is preferably a variable resistor which can be set by hand preferably prior to sale to the ultimate customer user.
This invention can be used advantageously even in a hair dryer.
In an additional configuration of the invention, the resistor 2 can even be eliminated, depending on the design of the motor. In this case, the voltage divider is then preferably formed by the PTC resistors 1 and ll and the resistance of the motor.
In an additional embodiment of the invention, the arrangement described above can be combined with a fireplace and or another source of open flame as a room heater. Figure 2 illustrates such an application.
In this case, too, the incoming air 47 is heated by the PTC
resistors 44 and is conducted lnto ventilating tubes or pipes 41 by one or more fans 42. In Figure 2 the right and left sides of the embodiment are preferably substantially identical in N~ PMG-03 Canada function. These ventilating tubes or pipes 41 transport the hot air 40 to the desired discharge points such as, on a fireplace.
This heating arrangement is installed in the immediate vicinity of a fireplace, the fire of which ls preferably used only as an auxiliary heater. In the normal, preferred mode of generation, the heating of the air for purposes of heating the environs of the heaters is performed only by the PTC resistors. When an open flame 46 in the fireplace 45 is used, the PTC resistors 44 are preferably disposed to heated indirectly by this flame 46 and therefore consume less electric power for this purpose. If the room temperature is sufficiently high, the electrical power and the heat therefrom is preferably automatically reduced further.
A further reduction of the electric power required can preferably also be achieved by closing the throttle elements 8 in the same sort of manner as those described above in reference to Figure 1.
In summary, one feature of the invention resides broadly in a heater blower wi~h PTC resistors with a fan, whereby in particular the air to be heated is delivered to the PTC resistors by means of the fan, characterized by the fact that the operating voltage of the fan 7 is conducted to a voltage divider l, 2, whose subsections consist of at least one power PTC resistor 1 and an additional resistor 2 connected in series.
Another feature of the invention resides broadly in a heater blower which is characterized by the fact that the resistor 2 is a PTC resistor.
Yet another feature of the invention resides broadly in a heater blower which is characterized by the fact that the one section of the voltage divider has several PTC resistors 1, 11 connected in series.
A further feature of the invention resides broadly in a heater blower which is characterized by the fact that to block the air current 12, there is an adjustable element 8 in the air NHL-PMG-03 Canada current between the fan 7 and a section of the voltage divider.
A yet further feature of the invention resides broadly in a heater blower which is characterized by the fact that the adjustable element designed as a throttle element 8 is located in the air current 12 between the fan 7 and the one section 1, 11 of the voltage divider.
Yet another further feature of the invention resides broadly in a heater blower which is characterized by the fact that an operating alternating current voltage is tapped at contact points 13, 14 and fed via a downstream rectifier 5 to a direct current fan 7.
An additional feature of the invention resides broadly in a heater blower which is characterized by the fact that resistance 2 is eliminated and replaced by rectifier 5 and the resistance of the fan motor.
A yet additiohal feature of the invention resides broadly in a heater blower for room heating purposes which is characterized by the fact that the heater blower is connected thermally in parallel with a fireplace or a comparable source of open flame, and when this fireplace is in operation, automatically requires less electrical energy.
An example of a positive temperature coefficient resistance is found in U.S. Patent No. 4,835,370, entitled "Self-regulating Heating Element". A hair dryer with positive temperature coefficient resistance is found in U.S. Patent No. 4,855,570, entitled "Electric Fluid Heating Unit Having Radial PTC Ceramic Heating Element". A hair dryer with valves for controlling air flow is found in U.S. Patent No. 4,525,623, entitled "Hair Drier With Valves for Controlling the Air Flow". Another hair dryer is found in U.S. Patent No. 3,872,607, entitled "Hair Drier".
All, or substantially all, of the components and methods of the varlous embodiments may be used with at least one embodiment 2 ~
NHL-PMG-03 Canada or all of the embodiments, if any, described herein.
The invention as described hereinabove in the context of the preferred embodiments is not to be taken as limited to all of the provided details thereof, since modifications and variations thereof may be made without departing from the spirit and scope of the invention.
NHL-PMG~03 Canada HEATER BLOWER SUCH AS AN ELECTRIC HAIR DRYER OR THE
LIKE, WITH PTC RESISTORS
BACKGROUND O~ THE INVENTION
1. Field of the Invention:
This invention relates to heaters with resistors and more particularly PCT resistors.
2. Back~round Information:
Heater blowers of modern design, in place of normal heating resistors, have so-called PTC (positive temperature coefficient) resistors, which have the advantage that they cannot normally in many usual applications become overheated since, as the temperature increases the resistance thereof also increases, which action usually produces a self-regulating action even when the heat dissipation from the resistors is decreased whereby the PCT resistors do not readily overheat. Behind the PTC resistors there is often a fan. This fan transports the air to be heated typically through holes in the PTC resistors, for example.
OBJECT OF THE INVENTION
The object of the invention is to make possible a simple regulation of the heat output of heater blowers in the simplest possible manner and without the use of special electronic power regulation instruments or circuits.
SUMMARY OF THE INVENTION
The arrangement of an air flow control element, which throttles the air stream and which is located (e.g. an iris diaphragm or shutter~ in the air current between the ventilator or fan and the PTC resistor of a section of the voltage divider, keeps away the cooling air from the resistor in question. This PCT resistor thereby heats up, as a result of which its lnternal electrical resistance increases. The portion of the total voltage across the PTC resistor taken across the section of the voltage divider in which the PTC resistor is connected could 2 9 ~
NHL-PMG-03 Canada theoretically be fed directly to an alternating current fan motor. Such an alternating current arrangement maybe a disadvantage in some specific applications because the speed of alternating current fan motors can usually only be regulated rather approximately and often, depending upon the design of the A-C motor, to a very limited extent by means changes of the operating voltage. However, it is definitely within the scope of the present invention to include A-C motors for the purpose of driving the fan of the embodiments of the present invention.
Therefore, in an alternative embodiment of the invention, a fan with a direct current motor is used.
Additional details and alternative embodiments of the invention are indicated in the following description and with reference to the embodiment illustrated in the accompanying drawings.
One aspect of the invention resides broadly in an electric hair dryer comprising: electric resistance heating device for connection to a source of electricity; a fan having a motor, the fan for blowing air by at least a portion of the electric resistance heating device; the electric resistance heater device comprising a plurality of resistances; at least one of the resistances comprising a first resistance; the first resistance comprising a positive temperature coefficient resistance; the first resistance for increasing in resistance as a temperature of the first resistance increases and first resistance for decreasing in resistance as the temperature of the first resistance decreases; at least a portion of the plurality of resistances comprising a voltage dlvider; the first resistance comprising one of the resistances of the voltage divider; and at least one of the plurality of resistances being connected in series with the first resistance; and device for directing air heated by the heating means to hair.
NHL-PMG-03 Canada Another aspect of the invention resides broadly in a fireplace insert having an electric heater, the fireplace insert comprising: a body for containing electric heating device;
electric resistance heating device disposed in the body;
the electric resistance heating device for connection to a source of electricity a fan for blowing air by at least a portion of the electric resistance heating device; the electric resistance heater device comprising a plurality of resistances; at least one of the resistances comprising a first resistance; the first resistance comprising a positive temperature coefficient resistance; the first resistance for increasing in resistance as a temperature of the first resistance increases and first resistance for decreasing in resistance as the ~emperature of the first resistance decreases; at least a portion of the plurality of resi.stances comprising a voltage divider; the first resistance comprising one of the resistances of the voltage divider; at least one of ~he plurality of resistances being connected in series with the first resistance; and device for directing heat from the electric heating device to an area in which the fireplace insert is installable.
Yet another aspect of the invention resides broadly in an electric heater blower comprising: a body for containing electric heating device; electric resistance heating device disposed in the body; the electric resistance heating device for connection to a source of electricity a fan for blowing air by at least a portion of the electric resistance heating device; the electric resistance heater device comprising a plurality of resistances;
at least one of the resistances comprising a first resistance;
the first resistance comprising a positive temperature coefficient resistance; the first resistance for increasing in resistance as a temperature of the first resistance increases and first resistance for decreasing in resistance as the temperature 2 ~
N~L-PMG-03 Canada of the first resistance decreas~s; at least a portion of the plurality of resistances comprising a voltage divider; the first resistance comprising one of the resistances of the voltage divider; and at least one of the plurality of resistances being connected in series with the first resistance; device for directing air heated by the heating device from the body.
BRIEF DESCRIPTIQN O~ THE DRAWINGS
Figure 1 is a schematic illustration of a heater blower according to an embodiment of the invention.
Figure 2 is a schematic illustration of a fireplace or other source of heat for a room.
DESCRIPTION OF THE PREFERRED EMBODIMENT
Figure 1 is a schematic illustration of a heater blower according to the invention. Via lines 3 and 4, an alternating current, e.g. 220 or 115 V, is fed to a voltage divider. The voltage divider consists of at least two resistors 1 and 2 connected in series, whereby at least the upper shown resistor l in Figure l is preferably a PTC resistor, and the lower shown resistor 2 may also preferably be a PTC resistor. The operating voltage for the fan 7 is tapped at a contact point 13 between the two resistors 1 and 2 and at the other end 14 of the resistor 2, preferably rectified by means of the downstream rectifier 5, and conducted to the fan 7, which is preferably a direct current fan.
In the event an A-C motor is used the rectifier 5 could be dispersed with. A capacitor 6 (shown in dotted lines) can, for example, be connected downstream of the rectifier 5 to smooth the direct current voltage obtained in this manner.
This invention is based on the knowledge that the voltage divider ratio from the resistors 1 and 2 can preferably be esse~tially modified by using preferably a throttle element such as a slide, iris diaphragm, or the like in the area of the resistor 1 which resistor thus is kept away either totally or NHL-PMG-03 Canada partially from the full or partial flow of the cooling air current 12. This resistor 1 is thereby heated up, which causes its internal resistance to increase. Consequently, the voltage drop in the other area of the voltage divider, in Figure 1 resistor 2, becomes smaller, so that the speed of rotation of the fan 7~ connected across the resistor 2, decreases. With the decrease in the speed of rotation, there is preferably, according to the invention, an automatic reduction of the heating output of the heater blower. To regulate the heating output, a throttle element 8, as described above is preferably used, which reduces the air flow over one section of the voltage divider, which consists of a resistor 1 or a series circuit of PTC reslstors 1 and ll. This can be accomplished in a simple manner, eg. by means of an iris diaphragm or another arrangement of the prior art. The resistor 11 is preferably a variable resistor which can be set by hand preferably prior to sale to the ultimate customer user.
This invention can be used advantageously even in a hair dryer.
In an additional configuration of the invention, the resistor 2 can even be eliminated, depending on the design of the motor. In this case, the voltage divider is then preferably formed by the PTC resistors 1 and ll and the resistance of the motor.
In an additional embodiment of the invention, the arrangement described above can be combined with a fireplace and or another source of open flame as a room heater. Figure 2 illustrates such an application.
In this case, too, the incoming air 47 is heated by the PTC
resistors 44 and is conducted lnto ventilating tubes or pipes 41 by one or more fans 42. In Figure 2 the right and left sides of the embodiment are preferably substantially identical in N~ PMG-03 Canada function. These ventilating tubes or pipes 41 transport the hot air 40 to the desired discharge points such as, on a fireplace.
This heating arrangement is installed in the immediate vicinity of a fireplace, the fire of which ls preferably used only as an auxiliary heater. In the normal, preferred mode of generation, the heating of the air for purposes of heating the environs of the heaters is performed only by the PTC resistors. When an open flame 46 in the fireplace 45 is used, the PTC resistors 44 are preferably disposed to heated indirectly by this flame 46 and therefore consume less electric power for this purpose. If the room temperature is sufficiently high, the electrical power and the heat therefrom is preferably automatically reduced further.
A further reduction of the electric power required can preferably also be achieved by closing the throttle elements 8 in the same sort of manner as those described above in reference to Figure 1.
In summary, one feature of the invention resides broadly in a heater blower wi~h PTC resistors with a fan, whereby in particular the air to be heated is delivered to the PTC resistors by means of the fan, characterized by the fact that the operating voltage of the fan 7 is conducted to a voltage divider l, 2, whose subsections consist of at least one power PTC resistor 1 and an additional resistor 2 connected in series.
Another feature of the invention resides broadly in a heater blower which is characterized by the fact that the resistor 2 is a PTC resistor.
Yet another feature of the invention resides broadly in a heater blower which is characterized by the fact that the one section of the voltage divider has several PTC resistors 1, 11 connected in series.
A further feature of the invention resides broadly in a heater blower which is characterized by the fact that to block the air current 12, there is an adjustable element 8 in the air NHL-PMG-03 Canada current between the fan 7 and a section of the voltage divider.
A yet further feature of the invention resides broadly in a heater blower which is characterized by the fact that the adjustable element designed as a throttle element 8 is located in the air current 12 between the fan 7 and the one section 1, 11 of the voltage divider.
Yet another further feature of the invention resides broadly in a heater blower which is characterized by the fact that an operating alternating current voltage is tapped at contact points 13, 14 and fed via a downstream rectifier 5 to a direct current fan 7.
An additional feature of the invention resides broadly in a heater blower which is characterized by the fact that resistance 2 is eliminated and replaced by rectifier 5 and the resistance of the fan motor.
A yet additiohal feature of the invention resides broadly in a heater blower for room heating purposes which is characterized by the fact that the heater blower is connected thermally in parallel with a fireplace or a comparable source of open flame, and when this fireplace is in operation, automatically requires less electrical energy.
An example of a positive temperature coefficient resistance is found in U.S. Patent No. 4,835,370, entitled "Self-regulating Heating Element". A hair dryer with positive temperature coefficient resistance is found in U.S. Patent No. 4,855,570, entitled "Electric Fluid Heating Unit Having Radial PTC Ceramic Heating Element". A hair dryer with valves for controlling air flow is found in U.S. Patent No. 4,525,623, entitled "Hair Drier With Valves for Controlling the Air Flow". Another hair dryer is found in U.S. Patent No. 3,872,607, entitled "Hair Drier".
All, or substantially all, of the components and methods of the varlous embodiments may be used with at least one embodiment 2 ~
NHL-PMG-03 Canada or all of the embodiments, if any, described herein.
The invention as described hereinabove in the context of the preferred embodiments is not to be taken as limited to all of the provided details thereof, since modifications and variations thereof may be made without departing from the spirit and scope of the invention.
Claims (32)
1. An electric hair dryer comprising:
electric resistance heating means for connection to a source of electricity;
a fan having a motor, said fan for blowing air by at least a portion of said electric resistance heating means;
said electric resistance heater means comprising a plurality of resistances;
at least one of said resistances comprising a first resistance;
said first resistance comprising a positive temperature coefficient resistance;
said first resistance for increasing in resistance as a temperature of said first resistance increases and first resistance for decreasing in resistance as the temperature of said first resistance decreases;
at least a portion of said plurality of resistances comprising a voltage divider;
said first resistance comprising one of the resistances of said voltage divider; and at least one of said plurality of resistances being connected in series with said first resistance; and means for directing air heated by said heating means to hair.
electric resistance heating means for connection to a source of electricity;
a fan having a motor, said fan for blowing air by at least a portion of said electric resistance heating means;
said electric resistance heater means comprising a plurality of resistances;
at least one of said resistances comprising a first resistance;
said first resistance comprising a positive temperature coefficient resistance;
said first resistance for increasing in resistance as a temperature of said first resistance increases and first resistance for decreasing in resistance as the temperature of said first resistance decreases;
at least a portion of said plurality of resistances comprising a voltage divider;
said first resistance comprising one of the resistances of said voltage divider; and at least one of said plurality of resistances being connected in series with said first resistance; and means for directing air heated by said heating means to hair.
2. A hair dryer according to Claim 1, wherein at least one of said plurality of resistances, being connected in series with said first resistance, comprises a second resistance.
3. A hair dryer according to Claim 2, wherein said second resistance comprises a positive temperature coefficient, second resistance also for increasing in resistance as a temperature of said second resistance increases and second resistance also for NHL-PMG-03 Canada decreasing in resistance as the temperature of said second resistance decreases.
4. A hair dryer according to Claim 3, wherein said plurality of resistances comprise a first section and a second section;
the resistances of at least one of said first section and said second section are connected in series.
the resistances of at least one of said first section and said second section are connected in series.
5. A hair dryer according to Claim 4, including means for varying air flow in a path from said fan by at least said first resistance and thereby for substantially changing the power consumption of said heating means;
said flow varying means for substantially increasing resistance of at least said first resistance when flow of air is decreased by at least said first resistance.
said flow varying means for substantially increasing resistance of at least said first resistance when flow of air is decreased by at least said first resistance.
6. A hair dryer according to Claim 5, wherein said flow varying means comprises an air flow throttling element being disposed between said fan and said heating means in said path for air flow therebetween.
7. A hair dryer according to Claim 6, wherein said throttling element comprises at least one of: iris means, shutter means and slide means.
8. A hair dryer according to Claim 6, wherein said second resistance comprises said fan motor.
9. A hair dryer according to Claim 8, wherein said second resistance comprises rectifier means connected to said fan motor for feeding rectified current to said fan motor.
10. A hair dryer according to Claim 9, wherein said throttling element comprises at least one of: iris means, shutter means and slide means.
11. A hair dryer according to Claim 6, including a contact point between the resistance in said voltage divider;
a downstream rectifier and said motor comprising a direct NHL-PMG-03 Canada current fan motor;
said contact point being connected to said downstream rectifier to provide power to said motor.
a downstream rectifier and said motor comprising a direct NHL-PMG-03 Canada current fan motor;
said contact point being connected to said downstream rectifier to provide power to said motor.
12. A hair dryer according to Claim 11, wherein said throttling element comprises at least one of: iris means, shutter means and slide means.
13. A fireplace insert having an electric heater, said fireplace insert comprising:
a body for containing electric heating means;
electric resistance heating means disposed in said body;
said electric resistance heating means for connection to a source of electricity;
a fan for blowing air by at least a portion of said electric resistance heating means;
said electric resistance heater means comprising a plurality of resistances;
at least one of said resistances comprising a first resistance;
said first resistance comprising a positive temperature coefficient resistance;
said first resistance for increasing in resistance as a temperature of said first resistance increases and first resistance for decreasing in resistance as the temperature of said first resistance decreases;
at least a portion of said plurality of resistances comprising a voltage divider;
said first resistance comprising one of the resistances of said voltage divider;
at least one of said plurality of resistances being connected in series with said first resistance; and means for directing heat from said electric heating means to an area in which the fireplace insert is installable.
NHL-PMG-03 Canada
a body for containing electric heating means;
electric resistance heating means disposed in said body;
said electric resistance heating means for connection to a source of electricity;
a fan for blowing air by at least a portion of said electric resistance heating means;
said electric resistance heater means comprising a plurality of resistances;
at least one of said resistances comprising a first resistance;
said first resistance comprising a positive temperature coefficient resistance;
said first resistance for increasing in resistance as a temperature of said first resistance increases and first resistance for decreasing in resistance as the temperature of said first resistance decreases;
at least a portion of said plurality of resistances comprising a voltage divider;
said first resistance comprising one of the resistances of said voltage divider;
at least one of said plurality of resistances being connected in series with said first resistance; and means for directing heat from said electric heating means to an area in which the fireplace insert is installable.
NHL-PMG-03 Canada
14. A fireplace insert according to Claim 13, wherein at least one of said plurality of resistances, being connected in series with said first resistance comprises a second resistance;
15. A fireplace insert according to Claim 14, wherein said second resistance comprising a positive temperature coefficient, second resistance also for increasing in resistance as a temperature of said second resistance increases and second resistance also for decreasing in resistance as the temperature of said second resistance decreases.
16. A fireplace insert according to Claim 15, wherein said plurality of resistances comprise a first section and a second section;
the resistances of at least one of said first section and said second section are connected in series.
the resistances of at least one of said first section and said second section are connected in series.
17. A fireplace insert according to Claim 16, including means for varying air flow in a path from said fan by at least said first resistance and thereby for substantially changing the power consumption of said heating means;
said flow varying means for substantially increasing resistance of at least said first resistance when flow of air is decreased by at least said first resistance.
said flow varying means for substantially increasing resistance of at least said first resistance when flow of air is decreased by at least said first resistance.
18. A fireplace insert according to Claim 17, wherein said flow varying means comprises an air flow throttling element being disposed between said fan and said heating means in said path for air flow therebetween.
19. A fireplace insert according to Claim 18, including means for burning an oxygen combustible fuel in said fireplace insert.
20. A fireplace insert according to Claim 19, wherein that a portion of the insert with the electric heater for being connected thermally in parallel with a fireplace or the like whereby when this fireplace is in operation, the first resistance NHL-PMG-03 Canada reduces electrical energy consumption of the electric heating means.
21. A fireplace insert according to Claim 18, wherein said second resistance comprises said fan motor.
22. A fireplace insert according to Claim 20, wherein said second resistance comprises rectifier means connected to said fan motor for feeding rectified current to said fan motor.
23. A fireplace insert according to Claim 18, including a contact point between the resistance in said voltage divider;
a downstream rectifier and said motor comprising a direct current fan motor;
said contact point being connected to said downstream rectifier to provide power to said motor.
a downstream rectifier and said motor comprising a direct current fan motor;
said contact point being connected to said downstream rectifier to provide power to said motor.
24. An electric heater blower comprising:
a body for containing electric heating means;
electric resistance heating means disposed in said body;
said electric resistance heating means for connection to a source of electricity;
a fan for blowing air by at least a portion of said electric resistance heating means;
said electric resistance heater means comprising a plurality of resistances;
at least one of said resistances comprising a first resistance;
said first resistance comprising a positive temperature coefficient resistance;
said first resistance for increasing in resistance as a temperature of said first resistance increases and first resistance for decreasing in resistance as the temperature of said first resistance decreases;
at least a portion of said plurality of resistances comprising a voltage divider;
NHL-PMG-03 Canada said first resistance comprising one of the resistances of said voltage divider; and at least one of said plurality of resistances being connected in series with said first resistance;
means for directing air heated by said heating means from said body.
a body for containing electric heating means;
electric resistance heating means disposed in said body;
said electric resistance heating means for connection to a source of electricity;
a fan for blowing air by at least a portion of said electric resistance heating means;
said electric resistance heater means comprising a plurality of resistances;
at least one of said resistances comprising a first resistance;
said first resistance comprising a positive temperature coefficient resistance;
said first resistance for increasing in resistance as a temperature of said first resistance increases and first resistance for decreasing in resistance as the temperature of said first resistance decreases;
at least a portion of said plurality of resistances comprising a voltage divider;
NHL-PMG-03 Canada said first resistance comprising one of the resistances of said voltage divider; and at least one of said plurality of resistances being connected in series with said first resistance;
means for directing air heated by said heating means from said body.
25. An electric heater blower according to Claim 24, wherein at least one of said plurality of resistances, being connected in series with said first resistance comprises a second resistance.
26. An electric heater blower according to Claim 25, wherein said second resistance comprising a positive temperature coefficient, second resistance also for increasing in resistance as a temperature of said second resistance increases and second resistance also for decreasing in resistance as the temperature of said second resistance decreases.
27. An electric heater blower according to Claim 25, wherein said plurality of resistances comprise a first section and a second section;
the resistances of at least one of said first section and said second section are connected in series.
the resistances of at least one of said first section and said second section are connected in series.
28. An electric heater blower according to Claim 27, including means for varying air flow in a path from said fan by at least said first resistance and thereby for substantially changing the power consumption of said heating means;
said flow varying means for substantially increasing resistance of at least said first resistance when flow of air is decreased by at least said first resistance.
said flow varying means for substantially increasing resistance of at least said first resistance when flow of air is decreased by at least said first resistance.
29. An electric heater blower according to Claim 28, wherein said flow varying means comprises an air flow throttling element being disposed between said fan and said heating means in said path for air flow therebetween.
NHL-PMG-03 Canada
NHL-PMG-03 Canada
30. An electric heater blower according to Claim 29, wherein said second resistance comprises said fan motor.
31. An electric heater blower according to Claim 30, wherein said second resistance comprises rectifier means connected to said fan motor for feeding rectified current to said fan motor.
32. An electric heater blower according to Claim 29, including a contact point between the resistance in said voltage divider;
a downstream rectifier and said motor comprising a direct current fan motor;
said contact point being connected to said downstream rectifier to provide power to said motor.
a downstream rectifier and said motor comprising a direct current fan motor;
said contact point being connected to said downstream rectifier to provide power to said motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2014188 CA2014188A1 (en) | 1990-04-09 | 1990-04-09 | Heater blower such as an electric hair dryer or the like, with ptc resistors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2014188 CA2014188A1 (en) | 1990-04-09 | 1990-04-09 | Heater blower such as an electric hair dryer or the like, with ptc resistors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2014188A1 true CA2014188A1 (en) | 1991-10-09 |
Family
ID=4144717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2014188 Abandoned CA2014188A1 (en) | 1990-04-09 | 1990-04-09 | Heater blower such as an electric hair dryer or the like, with ptc resistors |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2014188A1 (en) |
-
1990
- 1990-04-09 CA CA 2014188 patent/CA2014188A1/en not_active Abandoned
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3885126A (en) | Electric heat accumulator unit | |
| US6624397B2 (en) | Electric circuit for portable heater | |
| US5187349A (en) | Defrost and passenger compartment heater system | |
| KR101345849B1 (en) | Air-conditioning seat | |
| US6397002B1 (en) | Combination fan and heater | |
| WO1995031915A1 (en) | A hairdryer | |
| CA2590028C (en) | Electric heating device | |
| US20190128564A1 (en) | Heat Generation System For Portable Electric Heaters | |
| CA2014188A1 (en) | Heater blower such as an electric hair dryer or the like, with ptc resistors | |
| US5197112A (en) | Fixed volume PTC air heater with heat output adjusted by a damper controlling air flow over the PTC element | |
| JPS61217648A (en) | Air temperature control device | |
| US7457533B2 (en) | Electric heating device | |
| GB2117194A (en) | Electric fan heaters | |
| JP2663389B2 (en) | Hot air heater | |
| JPS6125561Y2 (en) | ||
| JPH03123520A (en) | Heating device | |
| JPH05272810A (en) | Air blowing motor control circuit for electrical hot air blower | |
| KR19980083618A (en) | Method and apparatus for maintaining hot air temperature in hair dryer | |
| JPS5851558Y2 (en) | Hot air machine | |
| JPH0690817A (en) | Warm-air blower of automatically voltage-transferring type | |
| JPS5850202Y2 (en) | Hot air generator | |
| JP2920007B2 (en) | Heating system | |
| JPS634583A (en) | Temperature control circuit for heater | |
| JP2751985B2 (en) | Combustion equipment | |
| JP2568639B2 (en) | Hot air heater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |