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US20020076213A1 - Portable heater - Google Patents

Portable heater Download PDF

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Publication number
US20020076213A1
US20020076213A1 US09/996,842 US99684201A US2002076213A1 US 20020076213 A1 US20020076213 A1 US 20020076213A1 US 99684201 A US99684201 A US 99684201A US 2002076213 A1 US2002076213 A1 US 2002076213A1
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United States
Prior art keywords
radiator
fan
portable heater
units
portable
Prior art date
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Abandoned
Application number
US09/996,842
Inventor
Kosta Pelonis
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Individual
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Individual
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Publication date
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Priority to US09/996,842 priority Critical patent/US20020076213A1/en
Publication of US20020076213A1 publication Critical patent/US20020076213A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/008—Details related to central heating radiators
    • F24D19/0087—Fan arrangements for forced convection
    • 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
    • F24H3/002—Air heaters using electric energy supply
    • F24H3/004—Air heaters using electric energy supply with a closed circuit for a heat transfer liquid
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]

Definitions

  • the present invention relates to portable heating devices.
  • Portable heaters provide flexibility to enhance the comfort of specific rooms within a centrally-heated home, without incurring the cost of employing the central furnace to heat the entire home, including unoccupied rooms.
  • Portable heaters are well known in the art.
  • One well-known type of portable heater is the portable radiator-type heater.
  • Examples of portable radiator-type heaters are disclosed in U.S. Pat. Nos. 4,493,974, 4,870,253, 5,966,498, and D 341,654.
  • Portable radiator heaters typically include a set of flattened, tubular radiator units filled with a diathermal fluid such as mineral oil.
  • the radiator units are joined proximate their tops by an upper header and proximate their bottoms by a lower headers.
  • the headers permit the thermal fluid to flow between radiator units.
  • An electric heating element is provided in the lower header. The heating element serves to warm the diathermal fluid so that the fluid circulates through the radiator units by thermal convection, to warm the air adjacent to the exterior surfaces of the tubular radiator units.
  • U.S. Pat. No. 4,879,253 discloses a portable radiator-type heater equipped with an air-circulating fan under the radiator units.
  • the fan optionally includes resistive heating elements for preheating air expelled by the fan.
  • the orientation of the exhaust of the fan can be varied from a generally vertical position in which the fan exhaust is directed upward through the radiator units, to a generally horizontal position in which the exhaust is directed outward away from the radiator units.
  • radiator units The greater the number of radiator units, the greater their collective surface area, the greater the rate of heat transfer from the radiator unit to the surrounding air. Thus, it is desirable to employ as many radiator units as practical. On the other hand, each additional radiator unit adds to the cost of manufacturing the portable heater. Thus, there is a need for a portable radiator-type heater that employs a reduced number of radiator units, yet provides effective heat transfer from the radiator units to the room air.
  • the present invention provides a portable heater comprising a sealed radiator containing a diathermal fluid.
  • the radiator includes a plurality of tubular radiator units. Each of the tubular radiator units has respective upper portions and respective lower portions.
  • the portable heater further includes at least one electric heating element positioned within the sealed radiator, as well as a fan positioned above the sealed radiator for directing air on the upper portions of the tubular radiator units. The fan is effective to cool the upper portions of the tubular units. This enhances thermal convection of the diathermal fluid within the tubular radiator units.
  • the present invention thus advantageously reduces the surface area required for transferring heat from the electric heating element via the diathermal fluid to the room air.
  • at least one fewer tubular radiator unit is required, with a concomitant reduction in the cost of manufacturing the portable heater.
  • the radiator can be maintained at a cooler temperature. It has been calculated that for every 10 degrees Celsius that the operating temperature can be reduced, the power consumption per tubular radiator unit can be concomitantly reduced by 250 watts. Thus, the power consumption of the portable heater can be advantageously reduced.
  • the present invention provides more rapid heat distribution from the portable heater to the room.
  • the heater includes a centrifugal fan driven by an electric motor. It is also preferred that a quiet fan be employed. To that end, it is preferred that the electric motor operates at low rpm, preferably at less than 2500 rpm, and more preferably at less than 1000 rpm.
  • the portable heater includes a cover enclosing the fan.
  • FIG. 1 is a perspective view of a portable heater according to the present invention.
  • FIG. 2 is a side elevational view of the heater of FIG. 1.
  • FIG. 3 is a top plan view of the heater of FIG. 1.
  • FIG. 4 is a front elevational view of the heater of FIG. 1.
  • FIG. 5 is an exploded perspective view of the heater of FIG. 1, showing assembly of the heater and the major components thereof.
  • FIG. 1 a portable heater 10 of the present invention.
  • the portable heater 10 includes a central radiator 20 formed from a plurality of generally flat, tubular radiator units 22 formed from a suitable material such as sheet metal.
  • each of the radiator units 22 Proximate the top of each of the radiator units 22 and symmetrically extending outwardly of each side thereof there are formed a pair of upper header elements 23 , each in the form of a truncated cone. Similarly, proximate the bottom of each of the radiator units 10 and symmetrically extending outwardly from each side thereof there are formed a pair of lower header elements 25 , each in the form of a truncated cone.
  • each of the upper header elements 23 are collinear, thus forming an upper header section 24 , and providing a flow path for fluid in between the interiors of the tubular radiator units 22 , the exterior-facing upper header elements of the first and last radiator units 22 being sealed.
  • each of the lower header elements 25 are collinear, thus forming a lower header section 26 , and providing a flow path for fluid in between the interiors of the tubular radiator units 22 .
  • the portion of the radiator 20 proximate the top of the radiator 20 can be referred to as the upper portion 28 and the portion of the radiator 20 proximate the bottom of the radiator 20 can be referred to as the lower portion 30 .
  • An electrical resistance-heating element 40 is positioned inside the radiator 20 within the lower header section 26 .
  • the radiator 20 is filled with a diathermal fluid such as an inert oil, for example, mineral oil, for transferring heat from the electrical resistance heating element 40 to the exterior surfaces of the radiator units 22 .
  • the interior of the radiator 20 is sealed against leakage of the diathermal fluid.
  • a wiring harness 32 connects the heating element 40 with a source of external electrical power via a power cord 34 and with various electric control devices.
  • a thermostat 42 controls operation of the electrical resistance-heating element 40 .
  • a thermal fuse 44 is also provided positioned proximate the radiator 20 as a safety device against overheating of the radiator 20 .
  • a tip-over switch 46 is provided to cut off current to the heating element 40 should the portable heater 10 be accidentally tipped over.
  • a temperature limiter 48 is also provided as a safety measure.
  • a power switch 50 is provided to control overall operation of the portable heater 10 .
  • a fan 52 is provided proximate the top of the radiator 20 .
  • the fan 52 includes a generally cylindrical housing 56 with a downwardly directly outlet for blowing air over the upper portion 28 of the radiator 20 .
  • the fan also includes a generally cylindrical “squirrel cage”-type fan blade assembly 54 , supported at one end by a suitable bearing 62 .
  • the fan 52 includes a motor 62 that drives the fan blade assembly 54 through a suitable drive 58 .
  • a baffle plate 64 is provided in between the fan housing 56 and the fan motor 62 .
  • the fan motor 62 is mounted above an insulation plate 66 for thermally insulating the fan motor 62 from the radiator 20 .
  • the fan motor 62 is of a low rpm type, preferably having an operating speed of less than 2500 rpm and more preferably less than 1500 rpm, so that the fan 52 operates quietly.
  • the portable heater 10 also includes a front cover 68 (FIG. 4) and a rear cover 74 (best seen in FIG. 5) each formed from a suitable material, such as by molding a suitable heat-resistant thermoplastic material.
  • the front cover 68 is adapted to receive a control panel 70 proximate the top of the front cover 68 , the control panel 70 having a plurality of apertures formed therein for receiving knobs 92 for controlling the power switch 50 and the thermostat 42 , as well a pilot lamp 94 for indicating operation of the portable heater 10 .
  • the control panel 70 also includes a molded-in handle 72
  • the rear cover 74 includes an aperture for receiving a corresponding handle 76 , to permit the portable heater 10 to be moved.
  • the front panel 68 is also adapted to receive a cord wrap plate 96 proximate the bottom of the front panel for wrapping the electrical power cord 34 .
  • a pair of wheel units 96 fitted with suitable wheels or castors is provided under the radiator 20 to facilitate moving the portable heater 10 .
  • a generally “U”-shaped top cover 80 (FIGS. 2 and 3) is provided for covering the upper portion 28 of the radiator 28 and enclosing the fan 52 .
  • the top cover 80 is provided with a plurality of louvers 82 adapted to cool the top cover 80 and to permit air to drawn into the fan enclosure.
  • the front cover 68 and the rear cover 74 are also provided with a plurality of louvers 78 to permit air circulation and cooling.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Direct Air Heating By Heater Or Combustion Gas (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

A portable heater includes a radiator having multiple tubular units and an electric heating element in the radiator for heating the diathermal fluid. A fan positioned above the sealed radiator directs air on the upper portions of the tubular units to enhance convection of the fluid.

Description

    BACKGROUND OF THE INVENTION
  • 1. Field of the Invention [0001]
  • The present invention relates to portable heating devices. [0002]
  • 2. Brief Description of the Prior Art [0003]
  • As home heating oil and natural gas prices fluctuate upward, there is an increasing need for efficient, inexpensive portable heaters. Portable heaters provide flexibility to enhance the comfort of specific rooms within a centrally-heated home, without incurring the cost of employing the central furnace to heat the entire home, including unoccupied rooms. [0004]
  • Portable heaters are well known in the art. One well-known type of portable heater is the portable radiator-type heater. Examples of portable radiator-type heaters are disclosed in U.S. Pat. Nos. 4,493,974, 4,870,253, 5,966,498, and D 341,654. [0005]
  • Portable radiator heaters typically include a set of flattened, tubular radiator units filled with a diathermal fluid such as mineral oil. The radiator units are joined proximate their tops by an upper header and proximate their bottoms by a lower headers. The headers permit the thermal fluid to flow between radiator units. An electric heating element is provided in the lower header. The heating element serves to warm the diathermal fluid so that the fluid circulates through the radiator units by thermal convection, to warm the air adjacent to the exterior surfaces of the tubular radiator units. [0006]
  • U.S. Pat. No. 4,879,253 discloses a portable radiator-type heater equipped with an air-circulating fan under the radiator units. The fan optionally includes resistive heating elements for preheating air expelled by the fan. The orientation of the exhaust of the fan can be varied from a generally vertical position in which the fan exhaust is directed upward through the radiator units, to a generally horizontal position in which the exhaust is directed outward away from the radiator units. [0007]
  • The greater the number of radiator units, the greater their collective surface area, the greater the rate of heat transfer from the radiator unit to the surrounding air. Thus, it is desirable to employ as many radiator units as practical. On the other hand, each additional radiator unit adds to the cost of manufacturing the portable heater. Thus, there is a need for a portable radiator-type heater that employs a reduced number of radiator units, yet provides effective heat transfer from the radiator units to the room air. [0008]
    • SUMMARY OF THE INVENTION
  • The present invention provides a portable heater comprising a sealed radiator containing a diathermal fluid. The radiator includes a plurality of tubular radiator units. Each of the tubular radiator units has respective upper portions and respective lower portions. The portable heater further includes at least one electric heating element positioned within the sealed radiator, as well as a fan positioned above the sealed radiator for directing air on the upper portions of the tubular radiator units. The fan is effective to cool the upper portions of the tubular units. This enhances thermal convection of the diathermal fluid within the tubular radiator units. [0009]
  • The present invention thus advantageously reduces the surface area required for transferring heat from the electric heating element via the diathermal fluid to the room air. Thus, at least one fewer tubular radiator unit is required, with a concomitant reduction in the cost of manufacturing the portable heater. In addition, the radiator can be maintained at a cooler temperature. It has been calculated that for every 10 degrees Celsius that the operating temperature can be reduced, the power consumption per tubular radiator unit can be concomitantly reduced by 250 watts. Thus, the power consumption of the portable heater can be advantageously reduced. Further, the present invention provides more rapid heat distribution from the portable heater to the room. [0010]
  • Preferably, the heater includes a centrifugal fan driven by an electric motor. It is also preferred that a quiet fan be employed. To that end, it is preferred that the electric motor operates at low rpm, preferably at less than 2500 rpm, and more preferably at less than 1000 rpm. Preferably, the portable heater includes a cover enclosing the fan.[0011]
    • BRIEF DESCRIPTION OF THE DRAWING
  • FIG. 1 is a perspective view of a portable heater according to the present invention. [0012]
  • FIG. 2 is a side elevational view of the heater of FIG. 1. [0013]
  • FIG. 3 is a top plan view of the heater of FIG. 1. [0014]
  • FIG. 4 is a front elevational view of the heater of FIG. 1. [0015]
  • FIG. 5 is an exploded perspective view of the heater of FIG. 1, showing assembly of the heater and the major components thereof.[0016]
    • DETAILED DESCRIPTION
  • Referring now to the figure in which like reference numerals represent like element in each of the several views, there is shown in FIG. 1 a [0017] portable heater 10 of the present invention. As can be seen in the exploded view of FIG. 5, the portable heater 10 includes a central radiator 20 formed from a plurality of generally flat, tubular radiator units 22 formed from a suitable material such as sheet metal.
  • Proximate the top of each of the [0018] radiator units 22 and symmetrically extending outwardly of each side thereof there are formed a pair of upper header elements 23, each in the form of a truncated cone. Similarly, proximate the bottom of each of the radiator units 10 and symmetrically extending outwardly from each side thereof there are formed a pair of lower header elements 25, each in the form of a truncated cone.
  • When the [0019] radiator 20 is assembled, each of the upper header elements 23 are collinear, thus forming an upper header section 24, and providing a flow path for fluid in between the interiors of the tubular radiator units 22, the exterior-facing upper header elements of the first and last radiator units 22 being sealed. Similarly, when the radiator 20 is assembled, each of the lower header elements 25 are collinear, thus forming a lower header section 26, and providing a flow path for fluid in between the interiors of the tubular radiator units 22. The portion of the radiator 20 proximate the top of the radiator 20 can be referred to as the upper portion 28 and the portion of the radiator 20 proximate the bottom of the radiator 20 can be referred to as the lower portion 30.
  • An electrical resistance-[0020] heating element 40 is positioned inside the radiator 20 within the lower header section 26. The radiator 20 is filled with a diathermal fluid such as an inert oil, for example, mineral oil, for transferring heat from the electrical resistance heating element 40 to the exterior surfaces of the radiator units 22. The interior of the radiator 20 is sealed against leakage of the diathermal fluid.
  • A [0021] wiring harness 32 connects the heating element 40 with a source of external electrical power via a power cord 34 and with various electric control devices. A thermostat 42 controls operation of the electrical resistance-heating element 40. A thermal fuse 44 is also provided positioned proximate the radiator 20 as a safety device against overheating of the radiator 20. In addition, a tip-over switch 46 is provided to cut off current to the heating element 40 should the portable heater 10 be accidentally tipped over. A temperature limiter 48 is also provided as a safety measure. A power switch 50 is provided to control overall operation of the portable heater 10.
  • A [0022] fan 52 is provided proximate the top of the radiator 20. The fan 52 includes a generally cylindrical housing 56 with a downwardly directly outlet for blowing air over the upper portion 28 of the radiator 20. The fan also includes a generally cylindrical “squirrel cage”-type fan blade assembly 54, supported at one end by a suitable bearing 62. The fan 52 includes a motor 62 that drives the fan blade assembly 54 through a suitable drive 58. A baffle plate 64 is provided in between the fan housing 56 and the fan motor 62. The fan motor 62 is mounted above an insulation plate 66 for thermally insulating the fan motor 62 from the radiator 20. Preferably, the fan motor 62 is of a low rpm type, preferably having an operating speed of less than 2500 rpm and more preferably less than 1500 rpm, so that the fan 52 operates quietly.
  • The [0023] portable heater 10 also includes a front cover 68 (FIG. 4) and a rear cover 74 (best seen in FIG. 5) each formed from a suitable material, such as by molding a suitable heat-resistant thermoplastic material. The front cover 68 is adapted to receive a control panel 70 proximate the top of the front cover 68, the control panel 70 having a plurality of apertures formed therein for receiving knobs 92 for controlling the power switch 50 and the thermostat 42, as well a pilot lamp 94 for indicating operation of the portable heater 10. The control panel 70 also includes a molded-in handle 72, and the rear cover 74 includes an aperture for receiving a corresponding handle 76, to permit the portable heater 10 to be moved. The front panel 68 is also adapted to receive a cord wrap plate 96 proximate the bottom of the front panel for wrapping the electrical power cord 34. A pair of wheel units 96 fitted with suitable wheels or castors is provided under the radiator 20 to facilitate moving the portable heater 10. In addition, a generally “U”-shaped top cover 80 (FIGS. 2 and 3) is provided for covering the upper portion 28 of the radiator 28 and enclosing the fan 52. The top cover 80 is provided with a plurality of louvers 82 adapted to cool the top cover 80 and to permit air to drawn into the fan enclosure. The front cover 68 and the rear cover 74 are also provided with a plurality of louvers 78 to permit air circulation and cooling.
  • It will be recognized by those skilled in the art that changes may be made in the above described embodiment of the invention without departing from the broad inventive concepts thereof. It is understood, therefore, that this invention is not limited to the particular embodiments disclosed, but is intended to cover all modifications, which are within the scope and spirit of the invention. [0024]

Claims (7)

I claim:
1. A portable heater comprising:
(a) a sealed radiator containing a diathermal fluid, the radiator including a plurality of tubular radiator units, the tubular radiator units having respective upper portions and respective lower portions;
(b) at least one electric heating element positioned within the sealed radiator;
(c) a fan positioned above the sealed radiator for directing air on the upper portions of the tubular radiator units, the fan being effective to cool the upper portions of the tubular units to enhance thermal convection of the diathermal fluid within the tubular radiator units.
2. A portable heater according to claim 1 wherein the fan comprises a centrifugal fan.
3. A portable heater according to claim 2 further comprising an electric motor for driving the centrifugal fan.
4. A portable heater according to claim 3 wherein the electric motor operates at low rpm.
5. A portable heater according to claim 4 wherein the electric motor operates at less than 2500 rpm.
6. A portable heater according to claim 5 wherein the electric motor operates at less than 1000 rpm.
7. A portable heater according to claim 1 further comprising a cover enclosing the fan.
US09/996,842 2000-11-30 2001-11-29 Portable heater Abandoned US20020076213A1 (en)

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US09/996,842 US20020076213A1 (en) 2000-11-30 2001-11-29 Portable heater

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US25024900P 2000-11-30 2000-11-30
US09/996,842 US20020076213A1 (en) 2000-11-30 2001-11-29 Portable heater

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Cited By (28)

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Publication number Priority date Publication date Assignee Title
ES2276567A1 (en) * 2004-11-26 2007-06-16 Investigacion Y Desarrollo Electrico Asturiano, S.L. Heating apparatus
EP1826494A4 (en) * 2004-12-13 2009-05-13 Guoning Yao One kind of improved electrical heater filled with oil
EP2000747A3 (en) * 2007-06-08 2009-07-08 José Romero Pérez Modular electric radiator
US20090180765A1 (en) * 2008-01-14 2009-07-16 Ming-Hsiang Yeh Multiple-power-selection heat storage device
US20100003018A1 (en) * 2006-10-23 2010-01-07 De' Longhi Spa Mobile device for heating rooms
US20100111666A1 (en) * 2008-06-23 2010-05-06 Xavier Guitton Method for fan control according to the position of a device and device implementing the procedure
ITMI20090295A1 (en) * 2009-02-27 2010-08-28 Dl Radiators Spa ACCESSORY OF A RADIATOR FOR THE HEATING OF AN ENVIRONMENT
WO2010108306A1 (en) * 2009-03-27 2010-09-30 先锋电器集团有限公司 Electric air-flow radiator
EP1655549A3 (en) * 2004-11-03 2010-11-03 BSH Bosch und Siemens Hausgeräte GmbH Radiator, especially oil filled radiator
EP1655545A3 (en) * 2004-11-03 2010-11-03 BSH Bosch und Siemens Hausgeräte GmbH Radiator having a cover
US20110284516A1 (en) * 2008-12-23 2011-11-24 Burda Worldwide Technologies Gmbh Modular heating and lighting system for the construction of lighting and heating elements
US20130062336A1 (en) * 2011-09-12 2013-03-14 Ji Yong Zhang Heater
USD684245S1 (en) * 2012-05-18 2013-06-11 Ningbo SMAL Electrics Co., Ltd. Oil filled radiator
JP2014084098A (en) * 2012-10-19 2014-05-12 Toyota Motor Engineering & Manufacturing North America Inc Heating system and automotive vehicle
US20140355967A1 (en) * 2013-05-29 2014-12-04 Hak Kee Chu Convection Wall Heater with Power Cord Plug
US20150153068A1 (en) * 2013-12-04 2015-06-04 Ningbo SMAL Electrics Co., Ltd. Radiator and baseplate assembly thereof
US20160161145A1 (en) * 2011-09-12 2016-06-09 Homeeasy Industrial Co., Ltd Heater Having Heating Core and Conductive Fin
WO2016116656A1 (en) * 2015-01-24 2016-07-28 Martinez Luque Julian Alejandro Console-type fan coil unit for domestic ventilation
EP3224548A1 (en) * 2014-11-25 2017-10-04 Robert Bosch GmbH Heat exchanger system
US20170284701A1 (en) * 2016-03-31 2017-10-05 Gd Midea Environment Appliances Mfg Co., Ltd. Electric radiator
USD803998S1 (en) * 2015-06-05 2017-11-28 De' Longhi Appliances Srl Con Unico Socio Heating apparatus
US20190293304A1 (en) * 2018-03-26 2019-09-26 Ray King Variably heatable radiator
CN110567034A (en) * 2019-09-05 2019-12-13 秾源科技(北京)有限公司 A retractable portable electric heater
USD874624S1 (en) * 2018-01-26 2020-02-04 Beijing Xiaomi Mobile Software Co., Ltd. Electric heater
USD881363S1 (en) * 2017-11-08 2020-04-14 Midea Group Co., Ltd. Oil filled heater
USD903074S1 (en) * 2019-01-28 2020-11-24 Midea Group Co., Ltd. Electric radiator heater
USD1064215S1 (en) * 2023-03-28 2025-02-25 Shenzhen Hesung Innovation Technology Co., Ltd. Space heater
USD1100154S1 (en) * 2023-12-19 2025-10-28 Shenzhen Hesung Innovation Technology Co., Ltd. Heater

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US4870253A (en) * 1987-04-16 1989-09-26 De'longhi S.P.A. Mobile apparatus for heating rooms
USD354557S (en) * 1994-01-05 1995-01-17 Patton Electric Company, Inc. Electric radiator heater
US5966498A (en) * 1996-08-07 1999-10-12 Lakewood Engineering And Manufacturing Company End closure assembly for oil-filled heater

Patent Citations (4)

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Publication number Priority date Publication date Assignee Title
US4493974A (en) * 1983-01-12 1985-01-15 Ciracco Metal Fabricating Co., Inc. Snap-fit sheet metal cover for portable oil-filled radiators and method of manufacture
US4870253A (en) * 1987-04-16 1989-09-26 De'longhi S.P.A. Mobile apparatus for heating rooms
USD354557S (en) * 1994-01-05 1995-01-17 Patton Electric Company, Inc. Electric radiator heater
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Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1655549A3 (en) * 2004-11-03 2010-11-03 BSH Bosch und Siemens Hausgeräte GmbH Radiator, especially oil filled radiator
EP1655545A3 (en) * 2004-11-03 2010-11-03 BSH Bosch und Siemens Hausgeräte GmbH Radiator having a cover
ES2276567A1 (en) * 2004-11-26 2007-06-16 Investigacion Y Desarrollo Electrico Asturiano, S.L. Heating apparatus
EP1826494A4 (en) * 2004-12-13 2009-05-13 Guoning Yao One kind of improved electrical heater filled with oil
US8184962B2 (en) * 2006-10-23 2012-05-22 De' Longhi Spa Mobile device for heating rooms
US20100003018A1 (en) * 2006-10-23 2010-01-07 De' Longhi Spa Mobile device for heating rooms
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