IT202100022526A1 - Overtemperature safety system for gas fires - Google Patents
Overtemperature safety system for gas fires Download PDFInfo
- Publication number
- IT202100022526A1 IT202100022526A1 IT102021000022526A IT202100022526A IT202100022526A1 IT 202100022526 A1 IT202100022526 A1 IT 202100022526A1 IT 102021000022526 A IT102021000022526 A IT 102021000022526A IT 202100022526 A IT202100022526 A IT 202100022526A IT 202100022526 A1 IT202100022526 A1 IT 202100022526A1
- Authority
- IT
- Italy
- Prior art keywords
- gas
- safety system
- ring
- fact
- gas fires
- Prior art date
Links
- 230000005347 demagnetization Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 230000005291 magnetic effect Effects 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 230000036316 preload Effects 0.000 claims description 3
- 230000005294 ferromagnetic effect Effects 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 26
- 238000013021 overheating Methods 0.000 description 5
- 230000008020 evaporation Effects 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000010411 cooking Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 230000002547 anomalous effect Effects 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000009916 joint effect Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
- F23N1/007—Regulating fuel supply using mechanical means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/36—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position
- F16K17/38—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position of excessive temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/002—Actuating devices; Operating means; Releasing devices actuated by temperature variation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/24—Preventing development of abnormal or undesired conditions, i.e. safety arrangements
- F23N5/247—Preventing development of abnormal or undesired conditions, i.e. safety arrangements using mechanical means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C3/00—Stoves or ranges for gaseous fuels
- F24C3/12—Arrangement or mounting of control or safety devices
- F24C3/126—Arrangement or mounting of control or safety devices on ranges
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K2900/00—Special features of, or arrangements for fuel supplies
- F23K2900/05001—Control or safety devices in gaseous or liquid fuel supply lines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2235/00—Valves, nozzles or pumps
- F23N2235/12—Fuel valves
- F23N2235/22—Fuel valves cooperating with magnets
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Incineration Of Waste (AREA)
Description
DESCRIZIONE PER BREVETTO DI INVENZIONE DESCRIPTION BY PATENT OF INVENTION
Avente titolo ?Sistema di sicurezza da sovratemperatura per fuochi a gas? Entitled ?Overtemperature safety system for gas fires?
Campo di applicazione Field of application
L?invenzione consiste in uno speciale apparato di sicurezza per fuochi a gas. The invention consists of a special safety device for gas fires.
Il ?Sistema di sicurezza da sovratemperatura per fuochi a gas? in questione ? inteso per l?uso su fuochi a gas, durante la cottura, per protezione dal surriscaldamento indebito, per mezzo della intercettazione automatica del flusso di gas, nel caso in cui la temperatura all?interno di bollitori superi un livello pre-determinato, per esempio, in caso di completa evaporazione dell?acqua contenuta, ma anche nel caso in cui si lasci una fiamma accesa senza carico; The ?Gas fire overheating safety system? in question ? intended for use on gas fires, during cooking, to protect against undue overheating, by means of automatic shut-off of the gas flow, in case the temperature inside the kettles exceeds a pre-determined level, for example , in the event of complete evaporation of the water contained, but also in the event that a flame is left lit without a load;
Stato dell?arte State of art
Non risultano, allo stato, invenzioni corrispondenti o similari alla presente invenzione Scopo della invenzione At present, there are no inventions corresponding or similar to the present invention. Object of the invention
Ci? che la presente invenzione, ?Sistema di sicurezza da sovratemperatura per fuochi a gas? si prospetta, ? di salvaguardare da possibili conseguenze derivanti da anomala sovratemperatura all?interno di bollitori, dovuta, ad esempio, alla completa evaporazione dell?acqua contenuta, intercettando automaticamente il flusso di gas comburente, quando la temperatura supera un valore pre-determinato, e quindi evitando o limitando i danni possibili derivanti da tale evento. Il Sistema funziona anche in assenza del bollitore. There? that the present invention, ?Gas Fire Overtemperature Safety System? is expected, ? to safeguard against possible consequences deriving from anomalous overheating inside boilers, due, for example, to the complete evaporation of the water contained, automatically intercepting the flow of combustion gas, when the temperature exceeds a pre-determined value, and therefore avoiding or limiting the possible damages deriving from this event. The system also works in the absence of the boiler.
Un altro scopo dell?invenzione ?Sistema di sicurezza da sovratemperatura per fuochi a gas? ? quello di fornire un Sistema di sicurezza meccanicamente semplice, funzionale, e semplice da realizzare. Another object of the invention ?Overtemperature safety system for gas fires? ? that of providing a mechanically simple, functional, and simple to implement safety system.
Descrizione Description
?Sistema di sicurezza da sovratemperatura per fuochi a gas? caratterizzata dal fatto che la chiusura del circuito gas di alimentazione ? originata dall? effetto della smagnetizzazione di un magnete permanente, dovuta al superamento della sua max temperatura di esercizio. ?Overtemperature safety system for gas fires? characterized by the fact that the closure of the supply gas circuit ? originated from effect of the demagnetization of a permanent magnet, due to exceeding its maximum operating temperature.
L?oggetto della presente invenzione e un particolare Sistema meccanico di intercettazione, preferibilmente adatto per gas infiammabili come il gas da citt?, in grado di intercettarne il flusso, laddove le temperature all?interno del bollitore, oppure la temperatura propria del dispositivo, superi un valore pre-determinato. The object of the present invention is a particular mechanical interception system, preferably suitable for flammable gases such as city gas, capable of intercepting the flow, where the temperatures inside the boiler, or the temperature of the device, exceed a pre-determined value.
Il principio di funzionamento sul quale ? basato il ?Sistema di sicurezza da sovratemperatura per fuochi a gas? ? il principio fisico di de-magnetizzazione dei magneti permanenti che avviene quando si supera una certa temperatura operativa ed, in particolare, durante la convergenza verso la temperatura ?Curie?, essendo la stessa variabile e dipendente dal tipo di magnete The operating principle on which ? based on the ?Overtemperature safety system for gas fires? ? the physical principle of demagnetization of permanent magnets which occurs when a certain operating temperature is exceeded and, in particular, during the convergence towards the ?Curie? temperature, being the same variable and depending on the type of magnet
In caso di superamento della massima temperatura operativa del magnete contenuto nella parte superiore del dispositivo, all?interno del cappellotto, con la perdita/riduzione della forza attrattiva del magnete, un otturatore metallico, inserito nel proprio supporto, sotto l?azione di una molla, adatta per alte temperature, pre-caricata, provveder? a chiudere istantaneamente l?ugello del gas , mediante l?aiuto di una guarnizione, cos?, efficacemente ed istantaneamente, interrompendo il flusso del gas. Al ripristino delle condizioni di temperatura operative normali il magnete riprende a funzionare ed il sistema pu? essere resettato. If the maximum operating temperature of the magnet contained in the upper part of the device is exceeded, inside the cap, with the loss/reduction of the attractive force of the magnet, a metal obturator, inserted in its support, under the action of a spring , suitable for high temperatures, pre-loaded, will provide? to instantly close the gas nozzle, with the help of a gasket, thus effectively and instantaneously interrupting the gas flow. When normal operating temperature conditions are restored, the magnet starts working again and the system can? be reset.
Quanto sopra descritto pu? essere realizzato per mezzo di un ?Sistema di sicurezza da sovratemperatura per fuochi a gas? che ? composto dei seguenti componenti costruttivi: The above described can? be implemented by means of a ?Gas fire overheating safety system? That ? composed of the following construction components:
Lista delle parti componenti List of component parts
1) un "cappellotto 1" costruito in metallo ferromagnetico, cilindrico, con anello di base; 1) a "cap 1" made of ferromagnetic metal, cylindrical, with a base ring;
2) un ?elemento di materiale magnetico 2?, con foro, utile per il collegamento allo ?stelo otturatore? inferiore; 2) an ?element of magnetic material 2?, with a hole, useful for connection to the ?shutter stem? inferior;
3) uno ?stelo otturatore 3?, di sezione circolare, collegato con vite all?elemento magnetico posto nella parte superiore del dispositivo, con collare utile per alloggiare una molla e con seggio per la ?guarnizione 4? nell?estremo inferiore; 3) a ?shutter stem 3?, with a circular section, connected by screw to the magnetic element located in the upper part of the device, with a collar useful for housing a spring and with a seat for the ?gasket 4? in the lower end;
4) una ?guarnizione 4? realizzata in materiale resistente ad alte temperature , come Teflon o similare, collocata nella parte inferiore dell?otturatore, nella propria sede; 4) a ?seal 4? made of material resistant to high temperatures, such as Teflon or similar, placed in the lower part of the shutter, in its seat;
5) una ?molla per otturatore 5? con idoneo pre-carico, resistente ad alte temperature, idonea per azionare l?otturatore; 5) a ?shutter spring 5? with suitable pre-load, resistant to high temperatures, suitable for operating the shutter;
6) una "Molla di aggiustaggio 6" in materiale resistente alle alte temperature, idonea a garantire il contatto meccanico e termico con il fondo del bollitore; 6) an "Adjustment spring 6" in material resistant to high temperatures, suitable for guaranteeing mechanical and thermal contact with the bottom of the boiler;
7) una ?Ghiera 7?, filettata o forzata, utile per mantenere in posizione il ?cappellotto? nella sua sede; 7) a ?ring nut 7?, threaded or forced, useful for keeping the ?cap? at its headquarters;
8) una ?Piastra fuoco circolare superiore 8?, con, nella parte superiore, il supporto cilindrico per la ?ghiera 7?, risalti per accomodare la ?molla di aggiustaggio 6? e con foro centrale utile per accomodare lo ?stelo otturatore 3?, seggi per ?o Ring 10? ed ?anello di tenuta 11?; 8) an ?Upper circular fire plate 8?, with, in the upper part, the cylindrical support for the ?ring nut 7?, protruding to accommodate the ?adjustment spring 6? and with central hole useful for accommodating the ?obturator stem 3?, seats for ?o Ring 10? and ?sealing ring 11?;
9) una ?Piastra fuoco circolare inferiore (9)? con tubo convogliatore inferiore per il gas e nella parte superiore idonei ugelli radiali per uscita del gas e costituenti l?appoggio per la 9) a ?Lower circular fire plate (9)? with lower conveyor pipe for the gas and in the upper part suitable radial nozzles for the gas outlet and constituting the support for the
?piastra fuoco circolare superiore 8?; ?upper circular fire plate 8?;
10) un ?O ring? 10) an ?O ring?
11) un ?Anello di tenuta? 11) a ?Seal ring?
Breve descrizione dei disegni Brief description of the drawings
La Tav.1/3 mostra nella sezione XX i vari component che compongono il ?sistema di Table 1/3 shows in section XX the various components that make up the ?system of
di sicurezza da sovratemperatura per fuochi a gas? overtemperature safety device for gas fires?
La Tav 2/3 mostra alcune viste e sezioni dei part. 1-2-3-4-6-7-10-11 Table 2/3 shows some views and sections of the parts. 1-2-3-4-6-7-10-11
La Tav.3/3 mostra su un piano di sezione -xx- i componenti della " Sistema di sicurezza Table 3/3 shows on a section plane -xx- the components of the " Security system
da sovratemperatura per fuochi a gas ?in due differenti situazioni, utile per comprenderne il principio di funzionamento from overtemperature for gas fires ? in two different situations, useful for understanding the operating principle
COME L?INVENZIONE FUNZIONA HOW THE INVENTION WORKS
Analizzeremo ora il principio operativo del ?Sistema di sicurezza da sovratemperatura per fuochi a gas? con l?aiuto della Tav.3/3 We will now analyze the operating principle of the ?Overtemperature safety system for gas fires? with the help of Table 3/3
Come precedentemente descritto, il principio operativo sul quale si basa il Sistema ? il fenomeno fisico di riduzione/perdita della forza attrattiva del magnete, che avviene al superamento di una certa temperatura. Di fatto la forza di attrazione dipende dal tipo, forma, materiale che compongono il magnete, ed essa viene meno, oppure si riduce considerevolmente, quando si supera una certa soglia chiamata ?temperatura operativa massima? che, per esempio, pu? variare da 80?C ad oltre 230?C. As previously described, the operating principle on which the System is based? the physical phenomenon of reduction/loss of the attractive force of the magnet, which occurs when a certain temperature is exceeded. In fact, the attraction force depends on the type, shape, material that make up the magnet, and it is lost, or is considerably reduced, when a certain threshold called ?maximum operating temperature? is exceeded? which, for example, can vary from 80?C to over 230?C.
Installiamo il sistema, a scopo dimostrativo, in un fuoco a gas, verificando cosa avviene quando si supera una certa soglia di temperatura all?interno del bollitore sovrastante, ad esempio in conseguenza di completa evaporazione; ci? aumenter? molto rapidamente e considerevolmente la temperatura del bollitore dagli usuali 100-110 ?C, e, parimenti, del ?cappellotto? che ? in contatto termico; We install the system, for demonstration purposes, in a gas fire, verifying what happens when a certain temperature threshold is exceeded inside the boiler above, for example as a result of complete evaporation; There? will it increase? very quickly and considerably the temperature of the boiler from the usual 100-110 ?C, and, likewise, of the ?cap? That ? in thermal contact;
In condizioni normali di temperatura la forza attrattiva dell? ?Elemento magnete 2? sar? superiore a quella della ?Molla 5?, che agisce sul collare del ?cappellotto? pertanto mantenendo l??otturatore? in posizione; il circuito resta aperto ed il gas esce liberamente. Under normal temperature conditions, the attractive force of the ?Magnet element 2? will be superior to that of the ?Spring 5?, which acts on the collar of the ?cap? therefore keeping the? shutter? in position; the circuit remains open and the gas flows out freely.
La ?molla di aggiustaggio 6? serve per mantenere il ?cappellotto 1?, che ? mantenuto in posizione da una ?ghiera 7?, in pieno contatto termico con il fondo del bollitore che appoggia su ?posapentola 12?; The ?adjustment spring 6? is used to maintain the ?cap 1?, that ? kept in position by a ?ring 7?, in full thermal contact with the bottom of the kettle which rests on the ?pot holder 12?;
Nell?eventualit? che la soglia di temperatura superi un determinato valore, l??elemento In the event that the temperature threshold exceeds a certain value, the element
magnete 2?, di fatto, ridurr? la propria forza attrattiva e, di conseguenza, ad un certo punto, la forza della ?molla per otturatore 5? spinger? l? ?otturatore 3?, istantaneamente, agendo sul collare realizzato sul proprio stelo, e cos? chiudendo il circuito ed il flusso del gas. La chiusura tra ?otturatore 3? e l? ?ugello 14? ? molto efficace, per l?azione congiunta della ?guarnizione 4? e della molla. magnet 2?, in fact, reduce? its attractive force and, consequently, at a certain point, the force of the ?shutter spring 5? push? L? ?shutter 3?, instantaneously, acting on the collar made on its stem, and so? closing the circuit and the gas flow. The closure between ?shutter 3? and the ?nozzle 14? ? very effective, due to the joint action of the ?seal 4? and of the spring.
Il Sistema ? anche in grado di salvaguardare dalla sovratemperatura anche in caso di funzionamento ?a vuoto?, ad esempio senza attivit? di cottura, garantendo la chiusura del gas al raggiungimento di una pre-determinata temperature con il gas aperto. The system ? also able to protect against overheating even in the event of "no load" operation, for example without activity? of cooking, guaranteeing the closure of the gas when a pre-determined temperature is reached with the gas open.
E? di tutta evidenza che il pre-carico della ?molla per otturatore 5? dovr? essere inferiore al peso del dispositivo, o, in alternativa, lo stesso dovr? essere convenientemente fissato al telaio della cucina a gas. AND? clearly that the pre-load of the ?shutter spring 5? will have to be less than the weight of the device, or, alternatively, the same will have to? be conveniently fixed to the frame of the gas cooker.
L'invenzione descritta sopra ? stata realizzata in versione preferita; alcuni dei dettagli esecutivi possono cambiare senza che ci? costituisca deroga dai principi originali dell?invenzione stessa. The invention described above? was made in the preferred version; some of the executive details can change without us? constitutes a derogation from the original principles of the invention itself.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT102021000022526A IT202100022526A1 (en) | 2021-08-30 | 2021-08-30 | Overtemperature safety system for gas fires |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT102021000022526A IT202100022526A1 (en) | 2021-08-30 | 2021-08-30 | Overtemperature safety system for gas fires |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| IT202100022526A1 true IT202100022526A1 (en) | 2023-03-02 |
Family
ID=78649807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT102021000022526A IT202100022526A1 (en) | 2021-08-30 | 2021-08-30 | Overtemperature safety system for gas fires |
Country Status (1)
| Country | Link |
|---|---|
| IT (1) | IT202100022526A1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3368788A (en) * | 1965-05-12 | 1968-02-13 | Skinner Prec Ind Inc | Magnetic latch valve |
| JPS5986474U (en) * | 1982-12-03 | 1984-06-11 | 東北金属工業株式会社 | Temperature/seismic valve |
| JPH08135975A (en) * | 1994-11-09 | 1996-05-31 | Paloma Ind Ltd | Heating cooker |
| JPH10137120A (en) * | 1996-11-11 | 1998-05-26 | Paloma Ind Ltd | Safety device for abnormal overheating |
| WO2014191289A1 (en) * | 2013-05-29 | 2014-12-04 | Coprecitec, S.L | Gas shut-off valve with thermal safety |
-
2021
- 2021-08-30 IT IT102021000022526A patent/IT202100022526A1/en unknown
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3368788A (en) * | 1965-05-12 | 1968-02-13 | Skinner Prec Ind Inc | Magnetic latch valve |
| JPS5986474U (en) * | 1982-12-03 | 1984-06-11 | 東北金属工業株式会社 | Temperature/seismic valve |
| JPH08135975A (en) * | 1994-11-09 | 1996-05-31 | Paloma Ind Ltd | Heating cooker |
| JPH10137120A (en) * | 1996-11-11 | 1998-05-26 | Paloma Ind Ltd | Safety device for abnormal overheating |
| WO2014191289A1 (en) * | 2013-05-29 | 2014-12-04 | Coprecitec, S.L | Gas shut-off valve with thermal safety |
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