WO2021179402A1 - Grille-pain - Google Patents

Grille-pain Download PDF

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Publication number
WO2021179402A1
WO2021179402A1 PCT/CN2020/085754 CN2020085754W WO2021179402A1 WO 2021179402 A1 WO2021179402 A1 WO 2021179402A1 CN 2020085754 W CN2020085754 W CN 2020085754W WO 2021179402 A1 WO2021179402 A1 WO 2021179402A1
Authority
WO
WIPO (PCT)
Prior art keywords
switch
sliding frame
toaster
circuit board
electromagnet
Prior art date
Application number
PCT/CN2020/085754
Other languages
English (en)
Chinese (zh)
Inventor
郭建刚
唐浩
Original Assignee
广东力升电器有限公司
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
Priority claimed from CN202020297137.9U external-priority patent/CN211796013U/zh
Priority claimed from CN202010166427.4A external-priority patent/CN111166198A/zh
Application filed by 广东力升电器有限公司 filed Critical 广东力升电器有限公司
Publication of WO2021179402A1 publication Critical patent/WO2021179402A1/fr

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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J37/00—Baking; Roasting; Grilling; Frying
    • A47J37/06—Roasters; Grills; Sandwich grills
    • A47J37/08—Bread-toasters

Definitions

  • the embodiment of the present invention relates to the technical field of household appliances, in particular to a toaster.
  • Toaster commonly known as automatic bread slice oven, bread toaster, is an electric cooker specially used to re-bake sliced bread. Using it, not only can the slices of bread be baked into browned yellow, but also can make it more scent and taste better, and increase appetite. With the change of users' living habits and the improvement of their living standards, toasters are becoming more and more popular among users.
  • the cavity of the toaster is usually provided with a sliding rack that can slide up and down. After the food to be baked is put into the cavity, the sliding rack slides into the bottom of the cavity in a vertical direction, and triggers the switch part to conduct the furnace. Then the food is heated, and when the preset heating time is reached, the controller controls the sliding frame to bounce up, thereby cutting off the heating circuit.
  • the Chinese invention patent with the authorized announcement number CN205849313U discloses a toaster, which includes a furnace body and a plurality of bread troughs opened in the furnace body.
  • the controller of the power-on time of the heating plate assembly the controller is equipped with a relay or a switch unit.
  • this kind of toaster is prone to fail to cut off the heating circuit due to the jam of the sliding frame, which poses safety hazards and high production costs.
  • the embodiments of the present invention provide a toaster with higher safety and lower production cost.
  • a toaster including:
  • a furnace liner assembly which is arranged in the shell, and the furnace liner assembly has at least one heating groove for heating food;
  • a sliding frame which is slidably arranged in the casing, and a magnetic attraction member is arranged on the sliding frame;
  • a reset piece which is used to apply a reset elastic force to the sliding frame
  • a first switch and a second switch both of which are arranged at positions corresponding to the sliding frame in the housing, and the first switch and the second switch are connected in series with the furnace assembly to form Loop, the first switch is a normally open switch, and the second switch is a normally closed switch;
  • a third switch which is connected in parallel with the second switch
  • An electromagnet which is arranged at a position corresponding to the magnetic attraction member in the housing;
  • a circuit board which is electrically connected to the third switch and the electromagnet, respectively;
  • the first switch when the sliding frame slides to the first position, the first switch is triggered, the furnace assembly is powered on, and the circuit board sends first signals to the third switch and the electromagnet respectively And the second signal, the third switch is closed, the electromagnet is powered on and attracts the magnetic attraction; when the sliding frame continues to slide to the second position, the first switch is kept triggered and triggered The second switch to turn off the second switch;
  • the circuit board When the furnace assembly is heated for a preset time, the circuit board sends a third signal and a fourth signal to the third switch and the electromagnet respectively, the third switch is turned off, and the furnace The components and the electromagnet are powered off, the sliding frame is reset to the initial position, the first switch is opened, and the second switch is closed.
  • the toaster can still cut off the power of the furnace assembly when the sliding frame is stuck due to a failure, provide secondary protection for the toaster, improve the safety of the toaster, and have low production costs and easy promotion and application.
  • the furnace assembly includes a first heating unit and a second heating unit connected in series, and the circuit board is connected in series with the first heating unit and connected in parallel with the second heating unit.
  • the voltage at both ends of the circuit board is adapted to the voltage at both ends of the second heating unit.
  • the circuit board when the circuit board receives the fifth signal sent by the fourth switch, the circuit board sends the third signal and the fourth signal to the third switch and the electromagnet, respectively. Signal. While the toaster can automatically control the heating time, it can also suspend heating according to the user's manual control, which can improve the maneuverability of the toaster, thereby improving user experience.
  • the first switch is a double-on double-break switch.
  • the double-way and double-break switch can cut off the live wire and the neutral wire at the same time, which has high safety.
  • the second switch is a limit switch.
  • the travel switch is sensitive in control, reliable in work and long in life.
  • the third switch is a magnetic control switch.
  • the magnetic control switch has fast action, stable operation, long service life and small size.
  • the sliding rack at least partially extends into the heating groove to form a food tray. In this way, when the sliding rack is reset, the food tray can reset with the sliding rack and lift out the food in the heating tank, which makes it more convenient for users to use.
  • a guide rod arranged in a vertical direction is provided in the housing, and the sliding frame is slidably connected to the guide rod.
  • the guide rod has a simple structure, stable operation and easy realization.
  • the first switch when the sliding frame is slid to the first position, the first switch is switched from the open state to the closed state, the furnace assembly starts to heat the food in the heating tank, and the third switch is turned off.
  • the open state is switched to the closed state, thereby forming two parallel paths with the second switch; when the sliding frame continues to slide toward the bottom of the heating tank to the second position, the sliding frame keeps triggering the first switch and triggers the second switch, so that The second switch is turned off, thereby cutting off one of the two parallel paths; when the sliding frame cannot be reset due to a fault such as jamming, and the furnace assembly is heated to a preset time, the circuit board will still send to the third switch The third signal, the third switch switches from the closed state to the open state after receiving the third signal. It can also cut off the other of the two parallel paths, which can power off the furnace assembly and stop heating, providing a toaster
  • the secondary protection improves the safety of the toaster, the production cost is low, and it is easy to
  • Fig. 1 is a schematic diagram of the structure when the sliding frame of the toaster is in the initial position according to the embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of the toaster of the embodiment of the present invention when the sliding frame is in the first position;
  • Fig. 3 to Fig. 6 are circuit schematic diagrams when the toaster of the embodiment of the present invention is in different states.
  • an embodiment of the present invention provides a toaster
  • the toaster includes: a shell 1, a furnace assembly 2, a sliding frame 4, a reset piece (not shown in the figure), The first switch 7, the second switch 8, the third switch 9, the electromagnet 10 and the circuit board 11, wherein the furnace assembly 2 is arranged in the housing 1, and the furnace assembly 2 is provided with at least one heating groove 3, After the pan assembly 2 is powered on, the food stuffed into the heating tank 3 can be heated; the sliding frame 4 is slidably arranged in the housing 1, and the sliding frame 4 is provided with a magnetic member 5, which may be, for example, iron sheet Or a magnet piece; the reset member is used to apply a reset elastic force to the sliding frame 4, the reset member may be, for example, a reset spring, which may be connected between the sliding frame 4 and the housing 1; the first switch 7 and the second switch 8 are two The first switch 7 and the second switch 8 are connected in series with the furnace assembly 2 and form a loop.
  • the first switch 7 is a normally open switch, and the second switch 8 is a normally closed switch; the third switch 9 is connected in parallel with the second switch 8; the electromagnet 10 is arranged in the housing 1 at a position corresponding to the magnetic attraction member 5; the circuit board 11 is respectively connected to the third switch 9 and the electromagnet 10Electrical connection.
  • the housing 1 may be provided with a guide rod 6 arranged in a vertical direction
  • the sliding frame 4 can be slidably connected to the guide rod 6, and the initial position of the sliding frame 4 may be located near the notch of the heating groove 3.
  • the sliding frame 4 can be partially extended into the heating tank 3 to form a food tray for holding food, and the sliding frame 4 can also be partially extended outside the housing 1 to form a handle, or may be combined with a handle that extends outside the housing 1 connect.
  • the first switch 7 may be disposed at a first position close to the bottom of the heating tank 3, and the second switch 8 may be disposed at a second position close to the bottom of the heating tank 3.
  • the sliding frame 4 When the toaster is not in use, the sliding frame 4 is in the initial position, as shown in FIG. 1. At this time, the first switch 7 is in the open state, and the second switch 8 is in the closed state, as shown in FIG.
  • the handle When in use, the handle can be moved to drive the sliding frame 4 to slide toward the bottom of the heating tank 3 to the first position, as shown in FIG. 2. At this time, the sliding frame 4 can trigger the first switch 7, and the first switch 7 is switched from the open state to the closed state. Since the second switch 8 is a normally closed switch, the first switch 7, the second switch 8 and the furnace bladder The circuit formed by the assembly 2 is switched to the closed state, the furnace assembly 2 is powered on and starts to heat the food in the heating tank 3.
  • the circuit board 11 also starts timing, and the circuit board 11 also sends the first signal and the second signal to the third switch 9 and the electromagnet 10 respectively, and the third switch 9 switches from the off state after receiving the first signal.
  • the circuit board 11 In the closed state, two parallel paths are formed with the second switch 8, as shown in FIG. 4.
  • the electromagnet 10 After the electromagnet 10 receives the second signal, it is powered on and generates an electromagnetic field, which then attracts the magnetic attraction member 5 on the sliding frame 4 to prevent the sliding frame 4 from resetting to the initial position, and it can also drive the sliding frame 4 to the bottom of the heating groove 3
  • the sliding frame 4 keeps triggering the first switch 7 and triggers the second switch 8, so that the second switch 8 is turned off, thereby cutting off one of the two parallel paths, as shown in FIG. 5.
  • the circuit board 11 sends the third signal and the fourth signal to the third switch 9 and the electromagnet 10, respectively, and the third switch 9 receives the second signal.
  • the closed state is switched to the off state, the other of the two parallel paths is also cut off, the furnace assembly 2 is powered off to stop heating, and the electromagnet 10 is also powered off after receiving the fourth signal, resulting in an electromagnetic field Disappear and no longer attract the magnetic attraction member 5.
  • the sliding frame 4 is reset to the initial position under the action of the resetting part. During the resetting process of the sliding frame 4, the food in the heating tank 3 can be lifted out of the heating tank 3 through the food tray.
  • the switch 7 is switched from the closed state to the open state, and the second switch 8 is switched from the open state to the closed state.
  • the circuit board 11 When the sliding frame 4 is stuck due to a malfunction and the furnace assembly 2 is heated to the preset time, the circuit board 11 still sends the third signal and the fourth signal to the third switch 9 and the electromagnet 10 respectively, and the third switch 9 receives After the third signal is switched from the closed state to the open state, the other of the two parallel paths can still be cut off, as shown in Figure 6, so that the furnace assembly 2 is powered off and stops heating, providing secondary protection for the toaster , To improve the safety of the toaster, the production cost is low, and it is easy to popularize and apply.
  • the circuit board 11 is not limited to sending the third signal and the fourth signal to the third switch 9 and the electromagnet 10 only after heating to a preset time.
  • the toaster may further include a fourth switch electrically connected to the circuit board 11.
  • the fourth switch can generate and send a fifth signal to the circuit board 11 according to the user's manipulation.
  • the third signal and the fourth signal can be sent to the third switch 9 and the electromagnet 10, respectively.
  • the toaster can automatically control the heating time, it can also suspend heating according to the user's manual control, which can improve the maneuverability of the toaster, thereby improving the user experience.
  • the furnace assembly 2 may include a first heating unit 12 and a second heating unit 13 connected in series.
  • the specific form of the first heating unit 12 and the second heating unit 13 is not limited, for example, it may be a heating unit.
  • the circuit board 11 is connected in series with the first heating unit 12 and connected in parallel with the second heating unit 13. When the furnace assembly 2 is powered on, the voltage across the circuit board 11 matches the voltage across the second heating unit 13.
  • the voltage at both ends of the second heating unit 13 can be adjusted to match the power supply voltage of the circuit board 11, such as 12V or 5V, and then the circuit board 11 Power supply, eliminating the need for a dedicated transformer circuit, which is beneficial to simplify the circuit structure of the toaster, and can further reduce the production cost.
  • the first switch 7 may be a double-pass double-break switch.
  • the double-pass double-break switch includes two sub-switches. The two sub-switches are respectively connected to the live wire and the neutral wire of the AC circuit. The live wire and the neutral wire are connected, and when disconnected, the live wire and the neutral wire can be cut off at the same time, which has better safety.
  • the second switch 8 can be a travel switch, which is sensitive in control, reliable in operation and long in life.
  • the third switch 9 can be a magnetic control switch, which has fast action, stable operation, long service life, and small size.
  • the magnetic control switch can be a relay or a magnetron.
  • the circuit board 11 when the sliding frame 4 is stuck and cannot be reset, and the furnace assembly 2 is heated for a preset time, the circuit board 11 will still send a third signal to the third switch 9, and the third switch 9 will accept When the third signal is reached, the closed state is switched to the open state, which can still power off the furnace assembly 2 and stop heating, providing secondary protection for the toaster, improving the safety of the toaster, lowering the production cost, and making it easy Promote applications.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Electric Stoves And Ranges (AREA)

Abstract

La présente invention concerne un grille-pain. Le grille-pain comprend un boîtier (1), un ensemble de conteneur de grille-pain (2), un cadre coulissant (4), un élément de réinitialisation, un premier commutateur (7), un deuxième commutateur (8), un troisième commutateur (9), un électro-aimant (10), et une carte de circuit imprimé (11) ; l'ensemble de conteneur de grille-pain (2) est disposé dans le boîtier (1) ; le cadre coulissant (4) est disposé de façon coulissante dans le boîtier (1), et un élément d'attraction magnétique (5) est disposé sur le cadre coulissant (4) ; l'élément de réinitialisation est utilisé pour appliquer une force élastique de réinitialisation au cadre coulissant (4) ; le premier commutateur (7) et le deuxième commutateur (8) sont tous deux disposés aux positions, correspondant au cadre coulissant (4), dans le boîtier (1), le premier commutateur (7) et le deuxième commutateur (8) sont reliés à l'ensemble de conteneur de grille-pain (2) en série pour former un circuit de retour, le premier commutateur (7) est un commutateur normalement ouvert, et le deuxième commutateur (8) est un commutateur normalement fermé ; le troisième commutateur (9) est connecté au deuxième commutateur (8) en parallèle ; l'électroaimant (10) est disposé à la position, correspondant à l'élément d'attraction magnétique (5), dans le boîtier (1) ; la carte de circuit imprimé (11) est électriquement connectée au troisième commutateur (9) et à l'électroaimant (10), respectivement. Selon le grille-pain, lorsque le cadre coulissant (4) ne peut pas être réinitialisé en raison de défauts, l'ensemble de conteneur de grille-pain (2) peut encore être éteint, une protection secondaire est fournie pour le grille-pain, une sécurité élevée est obtenue, et le coût de production est faible.
PCT/CN2020/085754 2020-03-11 2020-04-21 Grille-pain WO2021179402A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN202020297137.9U CN211796013U (zh) 2020-03-11 2020-03-11 一种多士炉
CN202020297137.9 2020-03-11
CN202010166427.4A CN111166198A (zh) 2020-03-11 2020-03-11 一种多士炉
CN202010166427.4 2020-03-11

Publications (1)

Publication Number Publication Date
WO2021179402A1 true WO2021179402A1 (fr) 2021-09-16

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ID=77672103

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/085754 WO2021179402A1 (fr) 2020-03-11 2020-04-21 Grille-pain

Country Status (1)

Country Link
WO (1) WO2021179402A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102525293A (zh) * 2011-12-30 2012-07-04 宁波长生电器有限公司 一种具有安全保护功能的多士炉
GB2531599A (en) * 2014-10-24 2016-04-27 Warburton Mike Energy saving electric toaster
CN207542769U (zh) * 2017-08-31 2018-06-26 北美电器（珠海）有限公司 自动断电控制电路及多士炉
CN110693350A (zh) * 2019-11-08 2020-01-17 广东百胜图科技有限公司 一种多士炉
CN210043802U (zh) * 2019-04-03 2020-02-11 汉威泰(广州)电器制造有限公司 一种多士炉炉芯和一种多士炉

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102525293A (zh) * 2011-12-30 2012-07-04 宁波长生电器有限公司 一种具有安全保护功能的多士炉
GB2531599A (en) * 2014-10-24 2016-04-27 Warburton Mike Energy saving electric toaster
CN207542769U (zh) * 2017-08-31 2018-06-26 北美电器（珠海）有限公司 自动断电控制电路及多士炉
CN210043802U (zh) * 2019-04-03 2020-02-11 汉威泰(广州)电器制造有限公司 一种多士炉炉芯和一种多士炉
CN110693350A (zh) * 2019-11-08 2020-01-17 广东百胜图科技有限公司 一种多士炉

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