[go: up one dir, main page]

WO2003051087A2 - Chauffage equipe d'un thermostat compact - Google Patents

Chauffage equipe d'un thermostat compact Download PDF

Info

Publication number
WO2003051087A2
WO2003051087A2 PCT/IT2002/000683 IT0200683W WO03051087A2 WO 2003051087 A2 WO2003051087 A2 WO 2003051087A2 IT 0200683 W IT0200683 W IT 0200683W WO 03051087 A2 WO03051087 A2 WO 03051087A2
Authority
WO
WIPO (PCT)
Prior art keywords
heating means
resistive heating
heater according
electric
prong
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.)
Ceased
Application number
PCT/IT2002/000683
Other languages
English (en)
Other versions
WO2003051087A3 (fr
Inventor
Valerio Bresolin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hydor SRL
Original Assignee
Hydor SRL
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hydor SRL filed Critical Hydor SRL
Priority to AU2002353513A priority Critical patent/AU2002353513A1/en
Publication of WO2003051087A2 publication Critical patent/WO2003051087A2/fr
Publication of WO2003051087A3 publication Critical patent/WO2003051087A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B1/00—Details of electric heating devices
    • H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
    • H05B1/0202—Switches
    • H05B1/0213—Switches using bimetallic elements
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
    • A01K63/06—Arrangements for heating or lighting in, or attached to, receptacles for live fish
    • A01K63/065—Heating or cooling devices

Definitions

  • Heater provided with a compact thermostat.
  • the present invention relates to a heater utilized in particular in aquariums, but also in other applications where it is necessary to heat a liquid at a predetermined temperature, such as in research laboratories or others.
  • Thermostats comprise a usually tube-shaped and watertight container inside which there are electric resistances for heating water and which are supplied by an electrical energy source.
  • Heaters also comprise a thermostat, that is a device able to maintain the temperature between prefixed values, more precisely the thermostat supplies the electric resistances in case the temperature drops below a minimum prefixed value and interrupts the supply in case the temperature exceeds a maximum prefixed value. Therefore, thermostats also comprise a thermal element sensitive to the temperature so as to feed or interrupt the supply of the electric resistances according to the temperature detected by the thermal element.
  • the heater comprises a thermal element of the bimetallic-type, that is a spring-bimetallic prong made of two layers of different materials, or better said, having different thermal dilatation coefficients so that, as temperature changes, the spring-bimetallic prong bends due to the ⁇ different dilatation of the two layers.
  • the free end of the spring-bimetallic prong has electric contacts which allow for the opening and the closing of the electric circuit in order to supply the electric resistances.
  • the spring-bimetallic prong operates both as an element sensitive to temperature and as a switch, namely it supplies or stops the electric resistances.
  • This solution although it works efficiently, has therefore some drawbacks due to the fact that the same element has many functions.
  • it is necessary to build various components both of mechanical and electrical types since, besides the spring-bimetallic prong it is also necessary to build all the electromechanical parts which have to be suitably mounted, so as to mechanically interact with the spring-bimetallic prong and to electrically interact with the supply circuit of the electric resistances.
  • the thermostat is then composed of many components, each built separately. If we consider that all parts have to interact with the same and sole element (the spring-bimetallic prong), it is evident that there are also difficulties in assemblying the different components.
  • the aim of the present invention is therefore to construct a heater wherein the drawbacks, cited with reference to the described prior art, are eliminated.
  • the heater has to be made of few components, so as to reduce the production time and costs for the various components, simplifying furthermore the subsequent mounting operation and, in addition, reducing the total time for the construction of the heater and its final cost.
  • the heater also becomes compact and, in an environment such as that of an aquarium, this is a particularly advantagious aspect.
  • the reliability of the heater correspondingly increases.
  • a heater in particular for aquariums of the initially described type, that is, comprising a watertight container wherein there is a resistive heating means and a thermostat for controlling the supply of said electric heating means, said thermostat including a thermal element sensitive to temperature, characterized in that said thermostat comprises an electromechanical device which interacts mechanically with said thermal element and electrically connected to said resistive heating means, said electromechanical device being able to supply said resistive heating means when the temperature detected by the thermal element is lesser than a minimum prefixed value, and to interrupt the supply when the detected temperature is greater than a maximum prefixed value.
  • the thermostat is composed of two parts: the sensitive element which detects only the temperature and an electromechanical device with the task to supply the resistive heating means or to interrupt the supply.
  • the electromechanical device is a microswitch.
  • thermostat so built are evident and they derive from the very simple construction of the thermostat; in fact, it is sufficient to buy in the market a microswitch at a low cost and of high reliability and mount it together with the spring-bimetallic prong. Besides a significant reduction in the construction time and cost, another advantage is the compactness of the heater, made possible by the small dimensions of the microswitch.
  • the spring-bimetallic prong does not contain electrical contacts any more, so it is possible to make the prong smaller. Therefore, the heater is compact and .more reliable.
  • FIG. 1 is a longitudinal and exploded view of the heater according to the present invention:
  • FIG. 1 is a partially sectioned longitudinal view of the thermostat of figure 1;
  • FIG 3 is a schematic top view of the electric circuit.
  • a heater is entirely indicated with reference l ⁇ , which comprises a tube-like container 20 which contains inside a thermostat 30 which supplies a film-like electric resistance 50.
  • the thermostat 30 comprises a support 32 upon which a spring-bimetallic prong 34, a microswitch 36 and an electric- light bulb are mounted.
  • the microswitch 36 (see figure 3) is a device which has two electric contacts 36A,36B and a push button 36C which mechanically interacts against an inner electric switch (not visible in figures) electrically connected with two electric contacts 36A,36B.
  • the electric switch is usually opened, whereas by pressing the push button 36C the electric switch closes.
  • the spring-bimetallic prong 34 and the microswitch 36 are mounted so that the free end 34A of the spring- bimetallic prong 34 is able to mechanically interact with the push button 36C of the microswitch 36.
  • the thermostat 30 also comprises a printed circuit 40 of the PCB type (printed circuit board) on which there are conductive tracks 42 connected to the electric resistance 50, to the microswitch 36 (or better, its electric contacts 36A,36B), to the electric-light bulb 38 and to the two leads 44 which are connected to an electric energy source.
  • the electric connection is made so that the electric resistance 50 and the electric-light bulb 38 are supplied when the microswitch 36 is closed.
  • the spring-bimetallic prong 34 when the temperature of the spring-bimetallic prong 34 falls below a minimum prefixed value, the spring-bimetallic prong 34 is bent and the free end 34 A comes into contact and presses against the push button 36C of the microswitch 36 closing the inner switch and supplying the electric resistance 50.
  • the electric resistance 50 heats the means inside which the heater 10 is immersed and, consequently, the temperature of the spring- bimetallic prong 34 increases.
  • the spring-bimetallic prong 34 comes back to the initial position and its free end 34A releases the push button 36C of the microswitch opening the inner switch and interrupting the supply of the electric resistance 50.
  • the supply of the electric resistance 50 is visualized by the lighting of the electric-light bulb 38.
  • the above minimum and maximum prefixed temperatures of the spring- bimetallic prong 34 define a predetermined temperature range and they respectively correspond to a minimum and a maximum temperature value of the means inside which the heater is immersed, the last values define a range of temperatures similiar to the range which refers to the prong.
  • the thermostat 30 also comprises a rotating adjusting pin 46 having two ends: a first end 46A which comes out from the heater 10 and a second end 46B which acts against the spring-bimetallic prong 34. By rotating the first end 46A, the pin 46 moves along its rotation axis so varying the pressure force which presses against the spring-bimetallic prong 34. In such a way, it is possible to move upwards or downwards the required temperature range of the means inside which the heater 10 is immersed.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Marine Sciences & Fisheries (AREA)
  • Animal Husbandry (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Farming Of Fish And Shellfish (AREA)
  • Control Of Resistance Heating (AREA)

Abstract

Dans un thermostat, destiné plus particulièrement aux aquariums, comprenant un contenant étanche à l'eau dans lequel on a placé une résistance électrique (50) et un thermostat (30) servant à réguler l'alimentation de la résistance électrique (50), le thermostat (30) comprend un microrupteur (36) qui interagit mécaniquement avec une tige (34) bimétallique formant ressort qui est sensible à la température et qui est électriquement connectée à la résistance électrique (50) de manière à alimenter ladite résistance tout en maintenant la température de l'eau entre des valeurs limites prédéterminées.
PCT/IT2002/000683 2001-12-11 2002-10-28 Chauffage equipe d'un thermostat compact Ceased WO2003051087A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002353513A AU2002353513A1 (en) 2001-12-11 2002-10-28 Heater provided with a compact thermostat

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITVE20010023 ITVE20010023U1 (it) 2001-12-11 2001-12-11 Termoriscaldatore provvisto di un termostato compatto.
ITVE01U000023 2001-12-11

Publications (2)

Publication Number Publication Date
WO2003051087A2 true WO2003051087A2 (fr) 2003-06-19
WO2003051087A3 WO2003051087A3 (fr) 2004-03-25

Family

ID=11461073

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2002/000683 Ceased WO2003051087A2 (fr) 2001-12-11 2002-10-28 Chauffage equipe d'un thermostat compact

Country Status (3)

Country Link
AU (1) AU2002353513A1 (fr)
IT (1) ITVE20010023U1 (fr)
WO (1) WO2003051087A2 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1088084A (en) * 1965-02-11 1967-10-18 Belford Vaughan Ind Ltd Improvements in or relating to electrical immersion heating devices
DE7116278U (de) * 1971-04-27 1971-08-12 Montanus Potthoff & Co Elektrische Heizvorrichtung, ins besondere fur Aquarien
DE2918242A1 (de) * 1979-05-05 1980-11-13 Baensch Tetra Werke Regler fuer aquarienheizer
US4379220A (en) * 1979-05-11 1983-04-05 Raychem Corporation Method of heating liquid
GB9322526D0 (en) * 1993-11-02 1993-12-22 Strix Ltd Electrical heaters

Also Published As

Publication number Publication date
AU2002353513A8 (en) 2003-06-23
AU2002353513A1 (en) 2003-06-23
ITVE20010023U1 (it) 2003-06-11
WO2003051087A3 (fr) 2004-03-25

Similar Documents

Publication Publication Date Title
EP0845957B1 (fr) Recipients pour le chauffage de liquides
US8097834B2 (en) Liquid heating vessels
US5020128A (en) Tubular sheathed electric heater with an overheat safety device
EP0507425A1 (fr) Relais électrothermique à élément de chauffage à couche
EP0994666A1 (fr) Receptacles chauffant des liquides et dispositifs de reglage adaptes
AU745179B2 (en) Temperature-dependent switch
US4394646A (en) Temperature indicator for a glass ceramic cooking surface
EP2374381B1 (fr) Récipients de réchauffement de liquides
WO2000010364A3 (fr) Amelioration d'elements de chauffage electriques
GB2079057A (en) An electric liquid heating appliance
WO2003051087A2 (fr) Chauffage equipe d'un thermostat compact
GB2040574A (en) Temperature regulators
EP0759261B1 (fr) Thermoplongeur compact, notamment pour aquariums
JPS62165824A (ja) サ−モスタツト
EP0004842A2 (fr) Relais thermique
CN112673446B (zh) 用于液体加热器具的控制装置
CN1373866A (zh) 水加热容器的相关改进
NL8003455A (nl) Thermostaatsamenstel, bijvoorbeeld voor een strijk- ijzer.
CN100445917C (zh) 无绳电加热器的温度敏感控制器
US3786218A (en) Adjustable thermostatic device with snap switches
US20070210892A1 (en) Surface mount thermostat
GB2354927A (en) Water heating element with adjustable resistance track associated with bimetal control
CN220174205U (zh) 一种温控保护加热棒
GB2336986A (en) Dual power output liquid heating element arrangement
CA1276214C (fr) Thermostat a anticipation de chaleur

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ OM PH PL PT RO RU SD SE SG SI SK SL TJ TM TN TR TT TZ UA UG US UZ VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LU MC NL PT SE SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP

WWW Wipo information: withdrawn in national office

Country of ref document: JP