CN214631752U

CN214631752U - Toaster

Info

Publication number: CN214631752U
Application number: CN202022851108.5U
Authority: CN
Inventors: 王旭宁; 李锦招; 毛树海
Original assignee: Joyoung Co Ltd
Current assignee: Joyoung Co Ltd
Priority date: 2020-12-02
Filing date: 2020-12-02
Publication date: 2021-11-09
Anticipated expiration: 2030-12-02

Abstract

The embodiment of the utility model discloses toaster, including roast room and switch, roast indoor heating module that is equipped with, toaster still includes: the timing module is used for determining cooking time according to the resistance value corresponding to the selected cooking function, and the thermal compensation module is used for acquiring the temperature of the baking chamber; the switch is closed, so that the timing module outputs a first level and starts to time the cooking time; the timing module outputs a second level when the cooking time is timed out, and the second level is used for disconnecting the switch. The embodiment of the utility model discloses toaster can realize toasting food effect unanimity under cold and hot machine state.

Description

Toaster

Technical Field

The utility model relates to a but not only be limited to the kitchen household electrical appliances field, more specifically relates to a toaster.

Background

Toaster is also known as breakfast machine or toaster, which is an electric cooker specially used for toasting sliced bread again.

At present, the toaster adopts a pull rod type elastic sheet switch control circuit of a manual switch. A pull rod type spring switch is arranged on the toaster, so that a cook can manually control the toaster to heat or stop heating.

However, the heating of the current toaster is only manually controlled by a cooker, and the toaster control circuit does not have a temperature sensing device, which easily causes the same cooking time of the same cooking menu of the toaster in a cold-hot machine state, or the toaster in a hot machine state is likely to cause problems such as overcooking and food scorching.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a toaster, including roast indoor, be equipped with heating module in the roast indoor, its characterized in that, toaster still includes: a timing module: the timing module determines cooking time t according to the resistance value corresponding to the selected cooking function so as to control the toaster to work; a thermal compensation module: the thermal compensation module acquires the baking chamber temperature T, determines a resistance value corresponding to the thermal compensation module according to the baking chamber temperature T, is connected with the timing module and is used for adjusting the cooking time T; a switch: the heating module and the timing module are respectively connected, the timing module signal is received, and the on-off of the heating module is controlled, wherein the switch is closed, so that the timing module outputs a first level and starts the timing of the cooking time; and the timing module outputs a second level when the cooking time is timed out, and the second level is used for disconnecting the switch and closing the heating module.

In one example, the cooking time T is β R C, the resistance value R is an equivalent resistance value of the resistance value R1 corresponding to the selected cooking function and the resistance value R2 corresponding to the baking chamber temperature T, C is a predetermined capacitance value, and β is a time coefficient of the timing module.

In one example, the toaster further comprises: the potentiometer is used for changing the resistance value R1 corresponding to the selected cooking function, the middle terminal of the potentiometer is connected with the timing module, the gears of the potentiometer are different, and the resistance value R1 corresponding to the selected cooking function is different.

In one example, the middle terminal of the potentiometer is connected to the timing module through a first resistor R105, and a second resistor R107 is arranged on the potentiometer in parallel;

the potentiometer has a potentiometer equivalent resistor VR101, and the resistor resistance value R1 corresponding to the selected cooking function is (VR101 × R107)/(VR101+ R107) + R105.

In an example, a capacitor C102 is further connected to a terminal of the timing module connected to the potentiometer, another end of the capacitor C102 is grounded, and a capacitance value of the capacitor C102 is the preset capacitance value.

In one example, the potentiometer is a rotary button arranged on the body of the toaster.

In one example, the thermal compensation module comprises a patch thermistor, and a third resistor R103 is arranged on the patch thermistor in parallel;

the patch thermistor has a temperature equivalent resistance NTC101, and the resistance value R2 corresponding to the baking room temperature T is (NTC 101R 103)/(NTC 101R 103).

In one example, the switch is a pull rod type elastic sheet switch, the baking chamber is provided with an electromagnet, and the timing module is electrically connected with the electromagnet, so that the electromagnet does not attract the elastic sheet switch when the timing module outputs the second level.

In one example, the baking chamber includes two cavities, and the heating module includes three heating wires, wherein two heating wires are respectively located at one side of one cavity, and the other heating wire is located at a common side of the two cavities.

In one example, the toaster further comprises a power supply module, wherein three heating wires are connected in series, two ends of the series heating wires are connected with the output end of the power supply module, and the middle part of any heating wire is used as the power supply output end, so that the input power supply is reduced to the preset voltage.

Compared with the prior art, the toaster provided by at least one embodiment of the present application has the following effects: through setting up timing module and thermal compensation module, thermal compensation module carries out thermal compensation to the timing of timing module, can realize that the toaster can be in cold and hot quick-witted state, and the same menu needs the automatic adjustment control of different culinary art time because of the machine temperature difference to the realization toasts the food effect unanimity under cold and hot quick-witted state.

In some embodiments of the present application, the following effects can also be achieved:

1. the working time of the automatic control toaster is realized in a timing mode of the timing module, the switch is disconnected when the timing of the timing module is finished, the heating module stops heating, the automatic control toaster stops heating, manual control stop heating of a cooker can be avoided, and user experience is improved.

2. The timing module can time according to different resistance values, so that the cooking time of different cooking menus can be automatically controlled.

3. The resistance values corresponding to different cooking functions can be changed through the potentiometer so as to meet the requirements of different cooking times under different cooking menus.

4. The thermal compensation module may include: the patch type thermistor is placed on one side, close to the toaster baking chamber, of the circuit board, so that the temperature compensation is more accurate.

5. The design of a tapped power circuit can be adopted, and the design cost of the power circuit is saved by stepping down the voltage to low-voltage alternating current through the heating wire.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and drawings.

Drawings

The accompanying drawings are included to provide a further understanding of the embodiments of the present invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the embodiments of the invention and not to limit the embodiments of the invention.

Fig. 1 is a block diagram of a toaster according to an exemplary embodiment of the present invention;

FIG. 2 is a graph showing a trend of the relationship between cooking time T and baking chamber temperature T according to an embodiment of the present invention;

fig. 3 is a schematic circuit diagram of a toaster according to an exemplary embodiment of the present invention;

fig. 4 is a schematic circuit diagram of a toaster according to an exemplary embodiment of the present invention;

fig. 5 is a block diagram of a toaster according to an exemplary embodiment of the present invention;

fig. 6 is a schematic circuit diagram of a toaster according to an exemplary embodiment of the present invention;

fig. 7 is a schematic circuit diagram of rectification and filtering provided by an embodiment of the present invention;

fig. 8 is a schematic circuit diagram of a toaster according to an exemplary embodiment of the present invention.

Description of reference numerals:

11-a switch; 12-a heating module; 13-a timing module; 14-a thermal compensation module; 15-a power supply module; 16-a buzzer module; 17-display module.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.

Fig. 1 is a block diagram of a toaster according to an exemplary embodiment of the present invention, as shown in fig. 1, the toaster may include a toasting chamber, a heating module 12 may be disposed in the toasting chamber, and the heating module 12 heats the toasting chamber to cook food materials placed in the toasting chamber. The toaster may further comprise: a timing module 13, a thermal compensation module 14 and a switch 11.

The switch 11 is respectively connected with the timing module 13 and the heating module 12, the timing module 13 determines the cooking time t according to the resistance value corresponding to the selected cooking function to control the toaster to work, timing is started when the toaster starts to work, and a signal is output to the switch 11 when timing is finished, and the switch 11 controls to turn off the power supply and stop the toaster from working.

Thermal compensation module 12 acquires roast room's temperature T, preferred, thermal compensation module 12 laminate in roast room's lateral wall, like this, can be accurate acquire roast room's culinary art temperature, thermal compensation module 12 confirms the resistance value that thermal compensation module corresponds according to roast room's temperature T, and simultaneously, thermal compensation module is connected with the timing module, and the timing module adjusts corresponding culinary art time T according to the resistance value that thermal compensation module confirmed, and like this, it is different to realize roast room temperature T, and corresponding culinary art time is different, and like this, the toaster is when cold machine state and heat engine state, culinary art time automatic adjustment, and culinary art is not abundant when avoiding the cold machine, and cooks excessively during the heat engine state.

When the switch is closed by a user, the timing module outputs each level and starts timing of the cooking time, wherein the cooking time is calculated timely according to a corresponding cooking program selected by the timing module and an adjusted temperature resistance value given by the thermal compensation module; and the timing module outputs a second level when the cooking time is over, and the second level is used for switching off the switch so as to switch off the heating module and control the toaster to stop working.

In this embodiment, compared with the existing toaster which only controls heating by a cooker manually and has no temperature sensing device, the thermal compensation module has the thermal compensation effect on the timing module by arranging the timing module and the thermal compensation module, and the food baking effect is consistent under the state of the cold and hot machine. The difference of the baking effect of the toaster in the cold and hot machine states is solved, and the cooking effect in the hot machine state is better.

In this embodiment, the timing module may determine the matched cooking time t according to the cooking function selected by the user, and automatically control the operating time of the toaster by timing. In addition, the temperature T of the baking chamber can be obtained through the thermal compensation module, the cooking time T is adjusted according to the resistance value corresponding to the temperature T of the baking chamber, the timing of the timing module is subjected to thermal compensation, automatic adjustment control of different cooking times required by the same menu due to different machine temperatures in the cold and hot machine state of the toaster can be realized, and the food baking effect in the cold and hot machine state is consistent.

In this embodiment, when the user manually presses the switch, the timing module determines the cooking time t according to the resistance value corresponding to the selected cooking function, and starts timing, and at this time, the timing module outputs a first level (for example, a high level) to start the operation of the heating module. Then, the working time of the toaster is automatically controlled in a timing mode of the timing module, the switch is turned off when the timing of the timing module is finished, the heating module stops heating, the toaster is automatically controlled to stop heating, the situation that a cooker stops heating in a manual control mode can be avoided, and user experience is improved.

In one example, the corresponding relationship among the cooking function, the resistance value and the cooking time t may be stored in advance, and the cooking function selected by the user is different, the resistance value corresponding to the cooking function is different, and the required cooking time is different. According to the difference of the timing time of the timing module under different resistance values, the cooking time of different cooking menus can be automatically controlled. In one example, the cooking functions of the toaster include toasting, where the user selected toasting gear is different, i.e., the cooking functions are different.

In one example, the correspondence between the temperature of the baking chamber and the resistance value of the resistor may be stored in advance, and the resistance values corresponding to the temperatures of the baking chamber are different.

In one example, the thermal compensation module may include a temperature sensor by which the baking chamber temperature is obtained. Wherein, the thermal compensation module may include: the patch type thermistor is placed on one side, close to the toaster baking chamber, of the circuit board, so that the temperature compensation is more accurate.

In an example, the timing module may include a clock chip.

The embodiment of the utility model provides a toaster through setting up timing module and thermal compensation module, and thermal compensation module carries out thermal compensation to the timing of timing module, can realize that toaster under cold and hot quick-witted state, the same menu is because of the different automatically regulated control of the different culinary art time of demand of machine temperature to the realization toasts the food effect unanimity under cold and hot quick-witted state.

In an exemplary embodiment of the present invention, the toaster may further include: and the storage module is used for storing the cooking time t and can be connected with the timing module. The cooking time T is β R C, the resistance value R may be an equivalent resistance value of the resistance value R1 corresponding to the selected cooking function and the resistance value R2 corresponding to the baking chamber temperature T, C may be a preset capacitance value, and β may be a time coefficient of the timing module.

In this embodiment, the cooking time after temperature compensation can be determined by using the formula T ═ β ×, R ×, C, according to the resistance value corresponding to the selected cooking function and the resistance value corresponding to the baking chamber temperature T.

The equivalent resistance R may be determined according to a specific circuit connection relationship, and if the resistor corresponding to the selected cooking function is connected in series with the resistor corresponding to the baking chamber temperature T, the equivalent resistance R is R1+ R2. Or, if the resistor corresponding to the selected cooking function is connected in parallel with the resistor corresponding to the baking chamber temperature T, the equivalent resistor resistance value R is (R1 × R2)/(R1+ R2).

Where β may be a time coefficient of the timing module. In one example, the timing module includes a clock chip with model a0201F, and β may take the value of 23640.

In the embodiment, the timing module can time according to different resistance values, so that the cooking time of different cooking menus can be automatically controlled.

Fig. 2 is a graph showing the relationship trend between cooking time T and oven temperature T, as shown in fig. 2, when the toaster is in a heat engine state, the resistance of the thermal compensation module is smaller than that of the heat engine state, so that the cooking time of the heat engine state of the toaster is shorter than that of the heat engine state.

In an exemplary embodiment of the present invention, fig. 3 is a schematic circuit diagram of a toaster according to an exemplary embodiment of the present invention, as shown in fig. 3, the toaster may further include: the potentiometer is used for changing the resistance value R1 corresponding to the selected cooking function, the middle terminal of the potentiometer is connected with the timing module, the gears of the potentiometer are different, and the resistance value R1 corresponding to the selected cooking function is different.

In this embodiment, the resistance values corresponding to different cooking functions can be changed by the potentiometer, so as to meet the requirements of different cooking times under different cooking menus.

In one example, the potentiometer may be a rotary button disposed on the toaster body. In this embodiment, the knob button may be installed at a front body of the toaster, and the knob button of the toaster body may be pressed or rotated by a user to adjust a shift of the potentiometer, thereby obtaining resistance values corresponding to different cooking functions.

In one example, as shown in fig. 3, the middle terminal of the potentiometer may be connected to the timing module through a first resistor R105, and a second resistor R107 is disposed in parallel on the potentiometer; the potentiometer has a potentiometer equivalent resistor VR101, and the resistor resistance value R1 corresponding to the selected cooking function is (VR101 × R107)/(VR101+ R107) + R105.

In this embodiment, the timing module may include a clock chip U101, the middle terminal of the potentiometer may be connected to the crystal oscillator pin OSC of the clock chip U101 through the first resistor R105, and the resistance value R1 corresponding to the selected cooking function may be determined according to the equivalent resistor VR101, the first resistor R105, and the second resistor R107 of the potentiometer.

In an example, a capacitor C102 is further connected to a terminal of the timing module connected to the potentiometer, another end of the capacitor C102 is grounded, and a capacitance value of the capacitor C102 is a predetermined capacitance value.

In this embodiment, a capacitor C102 may be disposed between the crystal oscillator pin OSC of the clock chip U101 and the ground GND, and a capacitance of the capacitor C102 is used as a predetermined capacitance C in the formula of the cooking time t ═ β × R × C.

In an exemplary embodiment of the present invention, as shown in fig. 3, the thermal compensation module may include a patch thermistor, and a third resistor R103 is connected in parallel to the patch thermistor; the patch thermistor has a temperature equivalent resistance NTC101, and the resistance value R2 corresponding to the baking chamber temperature T is (NTC101 × R103)/(NTC101+ R103).

In this embodiment, one end of the chip thermistor may be connected in series with the potentiometer, and the other end of the chip thermistor may be connected to a supply voltage VCC pin of the clock chip U101, and the resistance value R2 corresponding to the baking chamber temperature T may be determined according to the equivalent resistor NTC101 and the third resistor R103 of the chip thermistor.

In this embodiment, as shown in fig. 3, the chip thermistor is connected in series with the potentiometer, and the equivalent resistance value R is R1+ R2.

In fig. 3, the NC pin of the clock chip U101 is floating.

In one example, placing the chip thermistor on the side of the circuit board near the toaster baking chamber, using high precision chip thermistor, using high precision resistors (R103, R105, and R107), using high precision potentiometer (VR101), and replacing capacitor C102 with a polyester capacitor, can make temperature compensation and cooking time more accurate. Wherein, the terylene capacitor has better stability and the capacitance value does not change along with the temperature change.

In an exemplary embodiment of the present invention, fig. 4 is a schematic circuit diagram of a toaster according to an exemplary embodiment of the present invention, as shown in fig. 4, the switch can be pull-rod type dome switches SW-N and SW-L, an electromagnet L101 can be disposed on the baking chamber, and the timing module is electrically connected to the electromagnet, so that the electromagnet does not attract the dome switch when the timing module outputs the second level. In this embodiment, the automatic disconnection of the dome switch may be controlled by the control pin CTRL of the clock chip U101.

In this embodiment, when the pull rod type dome switch is pulled down, the dome switch is closed, the whole circuit is turned on, the clock chip outputs a high level and starts to time the cooking time, the electromagnet attracts the patch on the pull rod, so that the pull rod type dome switch is in a pull-down state, and the heating module works. When the cooking time of the clock chip is timed, the clock chip outputs low level, the current passing through the electromagnet is zero, the electromagnet loses magnetism, the pull rod bounces, the elastic sheet switch is disconnected, the whole circuit is disconnected, and the heating module stops working.

In fig. 4, SW101 denotes a switch of the potentiometer, which is integrated in the potentiometer. A diode D102 may be connected in parallel to the electromagnet L101, a transistor Q101 may be connected between the electromagnets L101 and SW101, and a resistor R104 may be connected between the control pin CTRL of the clock chip U101 and SW 101.

In an example, the heating module may be connected to the output terminals Nout and Lout of the power module in fig. 4, so that when the pull-rod type dome switch is in a pull-down state, the heating module operates; when the pull rod type elastic piece switch is disconnected, the heating module stops working.

In an exemplary embodiment of the present invention, the baking chamber may include two cavities, and the heating module may include three heating wires, wherein the two heating wires are respectively located at one side of one cavity, and the other heating wire is located at a common side of the two cavities.

In this embodiment, the heating of the three cavities of toaster is realized to three heater of accessible, and three heater is located the one side of cavity respectively, is favorable to toasting food and is heated evenly, and the culinary art effect is better.

In an example, fig. 5 is a block diagram of a toaster according to an exemplary embodiment of the present invention, and fig. 6 is a schematic circuit diagram of a toaster according to an exemplary embodiment of the present invention, as shown in fig. 5 and fig. 6, the toaster may further include a power module 15, three heating wires F1, F2, and F3 connected in series, and two ends of the series connection are connected to output ends Nout and Lout of the power module, and a middle portion of any heating wire is used as a power output end, so as to reduce an input power to a preset voltage.

In this embodiment, can adopt the design of tapped power supply circuit, step down to low pressure alternating current through the heater tapped, for example accessible heater resistance tap carries out step-down processing and obtains 12VAC power of low pressure, has practiced thrift power supply circuit design cost.

Wherein, the mid portion of any heater is as power output end, and accessible heater wiring L output presets voltage, for example in fig. 6, reduces the voltage through heater F1 tap, and heater wiring L can be connected to the mid portion of heater F1 to output step-down and handle and obtain low pressure 12VAC power.

Fig. 7 is the circuit schematic diagram of rectification and filtering that the embodiment of the utility model provides, as shown in fig. 7, take a percentage through the heater and carry out step-down processing and obtain low pressure 12VAC power, obtain low pressure dc power supply through half-bridge rectification and filtering again, practiced thrift power supply circuit design cost. The half-bridge rectification and filtering circuit and the implementation principle in fig. 7 are the same as those in the prior art, and this embodiment is not limited and described herein.

In an exemplary embodiment of the present invention, as shown in fig. 5, the toaster may further include a buzzer module 16 for a buzzer alarm, which may be connected to the timing module and the power module. In this embodiment, can control buzzer module and send out the police dispatch newspaper when timing module culinary art time timing begins to remind the culinary art person to need to set up the horse and open shell fragment switch, begin to heat the culinary art. Or when the cooking time of the timing module is timed to be over, the buzzer module is controlled to give an alarm to remind a cooker of the end of cooking.

In an exemplary embodiment of the present invention, as shown in fig. 5, the toaster may further include a display module 17 for displaying a baking temperature, a baking state or a charging state, and the display module may be connected to the timing module and the power module. In this embodiment, the cooking time may be displayed through the display module.

In an alternative embodiment of the present invention, fig. 8 is a schematic circuit diagram of a toaster according to an exemplary embodiment of the present invention, as shown in fig. 8, which is different from the embodiment shown in fig. 3 and 4 in that the patch thermistor on one side of the toasting chamber of the toaster is removed, i.e. the design of the thermal compensation module is not adopted. In this embodiment, the formula for calculating the cooking time t may be: t ═ β ═ R ═ C, where R ═ R103+ (VR101// R107) + R105, C ═ C102.

In an alternative embodiment of the present invention, the power module can be replaced by other power schemes, such as a resistance-capacitance step-down power supply and a switching power supply.

In an alternative embodiment of the present invention, the capacitors and resistors in the peripheral RC oscillator circuit of the clock chip in the above embodiments can be slightly adjusted, such that the resistors R103, R107, R105, the potentiometer VR101 and the capacitor C102 in the above embodiments are properly increased or decreased.

In an alternative embodiment of the present invention, the surface-mounted thermistor attached to one side of the toaster baking chamber in the above-mentioned embodiment is replaced by a temperature sensor installed at the bottom of the toaster baking chamber.

In the description of the present invention, it should be noted that the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "side", "opposite", "four corners", "periphery", "mouth" word structure "and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the structure referred to has a specific orientation, is constructed and operated in a specific orientation, and thus, is not to be construed as limiting the present invention.

In the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "connected," "directly connected," "indirectly connected," "fixedly connected," "mounted," and "assembled" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; the terms "mounted," "connected," and "fixedly connected" may be directly connected or indirectly connected through intervening media, or may be connected through two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Although the embodiments of the present invention have been described above, the description is only for the convenience of understanding the present invention, and the present invention is not limited thereto. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a toaster, includes roast room, is equipped with heating module in the roast room, its characterized in that, toaster still includes:

a timing module: the timing module determines cooking time t according to the resistance value corresponding to the selected cooking function so as to control the toaster to work;

a thermal compensation module: the thermal compensation module acquires the baking chamber temperature T, determines a resistance value corresponding to the thermal compensation module according to the baking chamber temperature T, is connected with the timing module and is used for adjusting the cooking time T;

a switch: the heating module and the timing module are respectively connected, the timing module signal is received, and the on-off of the heating module is controlled, wherein the switch is closed, so that the timing module outputs a first level and starts the timing of the cooking time; and the timing module outputs a second level when the cooking time is timed out, and the second level is used for disconnecting the switch and closing the heating module.

2. The toaster as claimed in claim 1, wherein the cooking time T is β R C, the resistance R is an equivalent resistance of the resistance R1 corresponding to the selected cooking function and the resistance R2 corresponding to the toasting chamber temperature T, C is a predetermined capacitance, and β is a time coefficient of the timing module.

3. The toaster as set forth in claim 2 further comprising: the potentiometer is used for changing the resistance value R1 corresponding to the selected cooking function, the middle terminal of the potentiometer is connected with the timing module, the gears of the potentiometer are different, and the resistance value R1 corresponding to the selected cooking function is different.

4. The toaster as claimed in claim 3, wherein an intermediate terminal of said potentiometer is connected to said timing module via a first resistor R105, said potentiometer being provided in parallel with a second resistor R107;

5. The toaster as claimed in claim 3 or 4, wherein a capacitor C102 is further connected to a terminal of said timing module connected to said potentiometer, another terminal of said capacitor C102 is grounded, and a capacitance value of said capacitor C102 is said predetermined capacitance value.

6. The toaster as claimed in claim 3 or 4, wherein said potentiometer is a rotary button disposed on the toaster body.

7. The toaster as claimed in claim 3, wherein said thermal compensation module comprises a patch thermistor, said patch thermistor being provided with a third resistor R103 in parallel;

8. The toaster as claimed in claim 1, wherein said switch is a pull-rod type dome switch, said toasting chamber is provided with an electromagnet, said timing module is electrically connected to said electromagnet, so that said electromagnet does not engage said dome switch when said timing module outputs a second level.

9. The toaster as set forth in claim 1 wherein said toasting chamber comprises two cavities and said heating module comprises three heating wires, wherein two heating wires are located on each side of one cavity and the other heating wire is located on a common side of both cavities.

10. The toaster as claimed in claim 9, further comprising a power supply module, wherein three heating wires are connected in series, and both ends of the series connection are connected to the output end of the power supply module, and the middle portion of any one of the heating wires is used as the power supply output end, so that the input power supply is reduced to a predetermined voltage.