Toaster circuit and toaster

Abstract

The utility model relates to a toaster circuit and a toaster, the toaster circuit comprises an MCU control circuit, a step-down rectification filtering voltage stabilizing circuit and two or more groups of heating control circuits, and the two or more groups of heating control circuits are in one-to-one correspondence with baking grooves of the toaster. The heating control circuits are used for controlling the heating condition of the baking groove, any group of heating control circuits comprises one or more first heating bodies, a detection device and a first switching circuit, and in any group of heating control circuits, the first heating bodies are connected with the detection device; the detection devices are used for detecting whether bread is placed in the corresponding baking grooves or not and feeding back first detection information; the MCU control circuit controls the on-off state of the first switch circuit, the MCU control circuit controls the two or more groups of heating control circuits to work independently, and the situation that when part of the baking grooves contain bread, all the groups of heating control circuits work, and consequently power waste is caused is avoided.

Description

Technical Field

[0001] The utility model relates to a toaster technology, in particular to a toaster provided with an energy-saving circuit. Background Art

[0002] At present, the toasters on the market include a furnace chamber, and two or more bread slots are arranged in the furnace chamber. Each of the bread slots is provided with a heating plate. The toaster circuit controls all the heating plates of all the bread slots to work simultaneously. However, sometimes users do not need to use all the bread slots for heating at the same time, and only need to use some of the bread slots to heat the bread. All the heating plates of the remaining unused bread slots must also be heated simultaneously, resulting in waste of power. Content of the Utility Model

[0003] Based on the deficiencies of the prior art, the purpose of the creation of the utility model is to provide a toaster circuit and a toaster, and the MCU control circuit controls two or more group heating control circuits to work independently, saving power.

[0004] To achieve the above purpose, the utility model provides a toaster circuit, including an MCU control circuit, a step-down rectifying filtering and voltage stabilizing circuit, and two or more group heating control circuits. The two or more group heating control circuits correspond to the baking slots of the toaster one by one. The heating control circuit is used to control the heating condition of the baking slot. Any one of the group heating control circuits includes one or more first heating elements, a detection device, and a first switch circuit. Among them, in any one of the group heating control circuits,

[0005] The first heating element heats the baking slot corresponding to the heating control circuit;

[0006] The first switch circuit is used to control the conduction state of the first circuit. Among them, the first circuit is the circuit between all the first heating elements of the heating control circuit and the external power supply;

[0007] The detection device is used to detect whether there is bread placed in the corresponding baking slot and feedback the first detection information;

[0008] The MCU control circuit controls the opening and closing state of the first switch circuit according to the first detection information. When the MCU control circuit judges that there is bread in the baking slot according to the first detection information, the MCU control circuit controls the first switch circuit to close, and the first heating element is conducted with the external power supply. When the MCU control circuit judges that there is no bread in the baking slot according to the first detection information, the MCU control circuit controls the first switch circuit to disconnect, and the first heating element is disconnected from the external power supply;

[0009] The step-down rectifying, filtering and voltage stabilizing circuit is a line connected between an external power supply and the MCU control circuit, and provides a DC power supply for the MCU control circuit.

[0010] As an improvement to the toaster circuit of the present utility model, the heating control circuit of the toaster circuit of the present utility model includes two or more of the first heating elements.

[0011] As an improvement to the toaster circuit of the present utility model, a set of second lines is provided corresponding to two sets of the heating control circuits of the toaster circuit of the present utility model. One of the two adjacent toasting slots is heated by one set of the heating control circuit and the second line together, and the other of the two adjacent toasting slots is heated by the other set of the heating control circuit and the second line together. The second line includes a second switch circuit and a second heating element; wherein, in any set of the second lines,

[0012] The second heating element heats the two adjacent toasting slots simultaneously;

[0013] The second switch circuit is used to control the conduction state of the second line. Among them, the MCU control circuit controls the opening and closing state of the second switch circuit according to the first detection information of any one of the two sets of heating control circuits corresponding to the second line.

[0014] As an improvement to the toaster circuit of the present utility model, the detection device of the toaster circuit of the present utility model is an infrared detection device.

[0015] As an improvement to the toaster circuit of the present utility model, the toaster circuit of the present utility model further includes an electromagnetic switch. The electromagnetic switch is used to control the conduction state of a third line. The third line controls the working state of the lifting drive mechanism of the toaster. Among them, the third line is a line between the toaster circuit and an external power supply. Any set of the heating control circuits further includes a temperature detection device. The temperature detection device is electrically connected to the MCU control circuit and further includes an electromagnetic switch. The electromagnetic switch is used to control the conduction state of the third line. The third line controls the working state of the lifting drive mechanism of the toaster. Among them, the third line is a line between the toaster circuit and an external power supply. Any set of the heating control circuits further includes a temperature detection device. The temperature detection device is electrically connected to the MCU control circuit.

[0016] As an improvement to the toaster circuit of the present utility model, when all the first switch circuits are closed, the MCU control circuit only controls any one of the temperature detection devices to work.

[0017] To achieve the above object, the present utility model provides a toaster, which includes a base, a hearth, a housing, a bracket and a toaster circuit. The housing covers the base, and an accommodation cavity is formed between the base and the housing. The hearth is disposed in the accommodation cavity and fixed to the base. The hearth is provided with two or more baking slots, and the baking slots are arranged side by side in the transverse direction thereof. Each of the baking slots is correspondingly provided with a set of heating control circuit, a bracket and a heating plate. The bracket is disposed in the baking slot and can move in the vertical direction. The infrared detection device is disposed in the accommodation cavity, and the detection path of the infrared detection device enters the corresponding baking slot.

[0018] As an improvement of the toaster of the present utility model, the detection device of the toaster of the present utility model is an infrared detection device. Each of the baking slots is provided with a first detection hole penetrating through to the accommodation cavity, and the detection path of the infrared detection device passes through the first detection hole and enters the corresponding baking slot.

[0019] As an improvement of the toaster of the present utility model, two or more heat dissipation structures are disposed in the accommodation cavity of the toaster of the present utility model. The two or more heat dissipation structures correspond to the baking slots one by one. Each of the infrared detection devices includes an infrared detection element and a protective cover. The infrared detection element is disposed in the accommodation cavity, and the protective cover covers the outside of the infrared detection element. The protective cover is provided with a detection port along the direction of the detection path of the infrared detection device, and the detection port is provided with a light-transmitting baffle. A first air inlet hole is opened on the lower side of the protective cover, and a first air outlet hole is opened on the upper side of the protective cover. Each of the heat dissipation structures includes a second air inlet hole and a second air outlet hole. The second air inlet hole is opened on the side wall of the accommodation cavity and penetrates through to the outside of the toaster. The second air inlet hole is located below the first air inlet hole. The second air outlet hole is opened on the side wall of the accommodation cavity and penetrates through to the outside of the toaster. The second air outlet hole is located above the first air outlet hole.

[0020] As an improvement of the toaster of the present utility model, the second air outlet hole and the first air outlet hole are aligned in the vertical direction, and the second air inlet hole and the first air inlet hole are aligned in the vertical direction. The heat dissipation structure further includes a first diversion channel and a second diversion channel. The first diversion channel extends from the first air inlet hole to the second air inlet hole, and the second diversion channel extends from the first air outlet hole to the second air outlet hole.

[0021] As an improvement of the toaster of the present utility model, the heat dissipation structure of the toaster of the present utility model includes a third diversion channel and a fourth diversion channel. The second air inlet hole, the second air outlet hole and the infrared detection element are arranged on the same side wall of the accommodation cavity. The third diversion channel extends from the first air inlet hole to the second air inlet hole, and the fourth diversion channel extends from the first air outlet hole to the second air outlet hole.

[0022] As an improvement of the toaster of the present utility model, there are two baking slots provided in the toaster of the present utility model. The infrared detection device is fixed on one side of the housing along the longitudinal direction of the baking slot, or the infrared detection device is fixed on one side of the housing along the transverse direction of the baking slot.

[0023] Compared with the prior art, the present utility model has the following beneficial effects: By providing two or more groups of heating control circuits corresponding one by one to the baking slots of the toaster, the MCU control circuit controls the on-off state of the first switch circuit of the corresponding heating control circuit according to the first detection information fed back by the detection device, so as to control the conduction condition of the external power supply and the corresponding heating control circuit, and avoid the situation that all the groups of heating control circuits are conducted when only some of the baking slots contain bread, resulting in waste of power. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic structural diagram of the circuit of the toaster of the present utility model and a preferred embodiment of the toaster;

[0025] Figure 2 is Figure 1 a cross-sectional view taken along the top view direction;

[0026] Figure 3 is Figure 1 a cross-sectional view taken along the left view direction;

[0027] Figure 4 is Figure 3 an enlarged schematic view of part A;

[0028] Figure 5 is a schematic structural diagram of the circuit of the toaster of the present utility model and another embodiment 1 of the toaster;

[0029] Figure 6 is a schematic structural diagram of the circuit of the toaster of the present utility model and another embodiment 2 of the toaster;

[0030] Figure 7 is a schematic circuit diagram of the circuit of the toaster of the present utility model and a preferred embodiment of the toaster;

[0031] Figure 8 is Figure 7 a structural block diagram of the schematic circuit diagram;

[0032] Figure 9 is the circuit schematic diagram of the toaster circuit of the present utility model and the circuits of other embodiments of the toaster;

[0033] Figure 10 is Figure 9 the structural block diagram of the circuit schematic diagram of. Detailed implementation manners

[0034] Refer to Figures 1-10 to describe in detail a toaster circuit of the present utility model and the preferred embodiment and other embodiments of the toaster.

[0035] In the preferred embodiment, referring to the attached Figures 7-8 A toaster circuit of the present utility model includes an MCU control circuit 3, a step-down rectifying filtering and voltage stabilizing circuit 2, and two or more heating control circuits 100. The two or more heating control circuits 100 correspond to the toasting slots 405 of the toaster one by one. The heating control circuit 100 is used to control the heating condition of the toasting slot 405. Any one of the heating control circuits 100 includes one or more first heating elements 6, a detection device 8, and a first switch circuit 4. Among them, in any one of the heating control circuits 100,

[0036] The first heating element 6 heats the toasting slot 405 corresponding to the heating control circuit;

[0037] The first switch circuit 4 is used to control the conduction state of the first line. Among them, the first line is the line between all the first heating elements 6 of the heating control circuit 100 and the external power supply;

[0038] The detection device 8 is used to detect whether there is bread placed in the corresponding toasting slot 405 and feedback the first detection information;

[0039] The MCU control circuit controls the opening and closing state of the first switch circuit 4 according to the first detection information. When the MCU control circuit 3 judges that there is bread in the toasting slot 405 according to the first detection information, the MCU control circuit 3 controls the first switch circuit 4 to close, and the first heating element 6 is conducted with the external power supply. When the MCU control circuit 3 judges that there is no bread in the toasting slot 405 according to the first detection information, the MCU control circuit 3 controls the first switch circuit 4 to disconnect, and the first heating element is disconnected from the external power supply;

[0040] The step-down rectifying filtering and voltage stabilizing circuit 2 is the line connected between the external power supply and the MCU control circuit 3, and provides a DC power supply for the MCU control circuit 3.

[0041] By setting two or more sets of the above-mentioned heating control circuits 100 to correspond to the toasting slots 405 of the toaster one by one, the MCU control circuit 3 controls the on-off state of the first switch circuit 4 of the corresponding heating control circuit 100 according to the first detection information fed back by the detection device 20, so as to control the conduction condition of the external power supply and the corresponding heating control circuit 100. When bread is placed in only some of the toasting slots 405, the corresponding detection device 20 feeds the first detection information back to the MCU control circuit 3, and the MCU control circuit 3 controls the conduction of the heating control circuit 100 corresponding to the toasting slot 405 with bread placed in it to supply power to the first heating element 6, avoiding the conduction of all the groups of heating control circuits 100 and causing power waste.

[0042] In a preferred embodiment, referring to the attached Figures 7-8 , the heating control circuit 100 of the toaster circuit of the present utility model includes two or more of the first heating elements 6. In this embodiment, the heating control circuit 100 includes two first heating elements 6. Specifically, two toasting slots 405 of the toaster are arranged adjacent to each other. One side of one toasting slot 405 away from the other toasting slot 405 is provided with a first heating plate 101, and the other side is provided with a second heating plate 102. The first heating plate 101 and the second heating plate 102 are respectively provided with one first heating element 6 of the heating control circuit 100 corresponding to the toasting slot 405. When the heating control circuit 100 is turned on, the two first heating elements 6 respectively supply heat to the first heating plate 101 and the second heating element. In this embodiment, the materials of the first heating plate 101 and the second heating plate 102 are both mica sheets. In this embodiment, the two first heating elements 6 are arranged in parallel. In other embodiments, the two first heating elements 6 can also be arranged in series. It should be noted that the second heating plates 102 of two adjacent toasting slots 405 can be integrally formed, or can be formed separately and then combined together.

[0043] In other preferred embodiments, referring to the attached Figures 9-10 , a set of second circuits 200 is provided corresponding to two sets of the heating control circuits 100 of the toaster circuit of the present utility model. One set of the heating control circuits 100 and the second circuit 200 jointly control the heating condition of one of the two adjacent toasting slots 405, and the other set of the heating control circuits 100 and the second circuit 200 jointly control the heating condition of the other of the two adjacent toasting slots 405. The second circuit 200 includes a second switch circuit 5 and a second heating element 7;

[0044] Among them, in any set of the second circuits 200,

[0045] The second heating element 7 heats two adjacent baking slots 405 simultaneously;

[0046] The second switch circuit 5 is used to control the conduction state of the second circuit 200. Among them, the MCU control circuit 3 controls the opening and closing state of the second switch circuit 5 according to the first detection information of any one of the two groups of heating control circuits 100 corresponding to the second circuit 200. In this embodiment, two adjacent baking slots 405 share the second heating element 7. One implementation is that there are two adjacent baking slots 405 in the toaster. A first heating plate 101 is provided on one side of one baking slot 405 away from the other baking slot 405. A first heating element 6 of a heating control circuit 100 corresponding to the baking slot 405 is provided on the first heating plate 101. The second heating plate 102 separates the two baking slots 405, that is, two adjacent baking slots 405 share the second heating plate 102, and the second heating element 7 is provided on the second heating plate 10.

[0047] As Figure 4 shown, in a preferred embodiment, the detection device 8 of the toaster circuit of the present invention is an infrared detection device. The infrared detection device 20 includes an infrared transmitting element 201 and an infrared receiving element 202. The infrared transmitting element 201 emits an infrared detection signal to the baking slot 405. After the infrared detection signal hits an obstacle, it will be reflected back and received by the infrared receiving element 202. According to the first detection information obtained from the emitted infrared detection signal and the received infrared detection signal, the infrared detection device 20 sends the first detection information to the MCU control circuit 3. The MCU control circuit 3 analyzes the first detection information. If the intensity of the reflected infrared detection signal is higher than the set value, it is determined that bread has been placed in the baking slot 405. If the intensity of the reflected infrared detection signal is lower than the set value, it is determined that no bread has been placed in the baking slot 405.

[0048] In a preferred embodiment, referring to Figure 7 、 Figure 8, the toaster circuit of the present utility model further includes an electromagnetic switch 1, and the electromagnetic switch 1 is used to control the conduction state of the third circuit, and the third circuit controls the working state of the lifting drive mechanism of the toaster. Among them, the third circuit is the circuit between the toaster circuit and the external power supply. Any one of the heating control circuits 100 further includes a temperature detection device 8, and the temperature detection device 8 is electrically connected to the MCU control circuit 3. In this embodiment, the temperature detection device 8 is used to obtain the real-time temperature of the baking slot 405 and feed back the real-time temperature to the MCU control circuit 3, and the MCU control circuit 3 controls the opening and closing state of the electromagnetic switch 1 according to the real-time temperature; the MCU control circuit 3 controls the opening and closing state of the electromagnetic switch 1 according to the real-time temperature, which includes the steps: the MCU control circuit 3 presets the baking time parameter and the normal temperature environment temperature parameter, detects and obtains the real-time temperature parameter of the baking slot 405 through the temperature detection device 8, and the MCU control circuit 3 obtains the compensated baking time according to the real-time temperature parameter and the normal temperature environment temperature parameter, and obtains the actual baking time according to the compensated baking time and the preset baking time. The implementation method of this embodiment is to control the baking degree of the bread by time. For example, when the toaster is not completely cooled and baking is carried out again, the baking compensation time is obtained through the temperature detection device 8 to calculate the actual baking time to avoid over-baking. In this embodiment, when all the first switch circuits 4 are closed, the MCU control circuit 3 only controls any one of the temperature detection devices 8 to work, that is, when all the baking slots 405 are baking simultaneously, the MCU control circuit 3 controls any one of the temperature detection devices 8 to work, calculates the actual baking time according to this temperature detection device 8, and controls the conduction state of the third circuit through the actual baking time. When the baking time of the toaster reaches the actual baking time, the MCU control circuit 3 controls the electromagnetic switch 1 to disconnect, disconnects the toaster circuit from the external power supply, releases the restraint force on the bracket in the baking slot 405 of the toaster, and the lifting drive mechanism drives the bracket to move upward; in other embodiments, when any one of the baking slots 405 is baking, the MCU control circuit 3 controls only the corresponding temperature detection device 8 to work, calculates the actual baking time according to this temperature detection device 8, and controls the conduction state of the third circuit through the actual baking time.Another implementation manner of this embodiment is to directly control the degree of bread baking through the temperature detection device 8. Specifically, the temperature detection device 8 is used to detect the real-time temperature of the baking slot 405. When the temperature of any one of the baking slots 405 reaches the preset temperature, the corresponding temperature detection device 8 sends out a second detection signal. The MCU control circuit 3 controls the electromagnetic switch 1 to disconnect according to the second detection signal, disconnecting the toaster circuit from the external power supply, releasing the restraint on the bracket in the baking slot 405 of the toaster, and the lifting drive mechanism drives the bracket to move upward. In this embodiment, when all the first switch circuits 4 are closed, the MCU control circuit 3 only controls any one of the temperature detection devices 8 to work.

[0049] In a preferred embodiment, referring to the attached Figures 1-4 A toaster of the present invention includes a base 401, a furnace liner 402, a housing 404, a bracket 403, and a toaster circuit. The housing 404 covers the base 401. An accommodation cavity 406 is formed between the base 401 and the housing 404. The furnace liner 402 is disposed in the accommodation cavity 406 and fixed on the base 401. The furnace liner 402 is provided with two or more baking slots 405. The baking slots 405 are arranged side by side in the horizontal direction. Each of the baking slots 405 is correspondingly provided with a set of heating control circuits 100, a bracket 403, and a heating plate. The bracket 403 is disposed in the baking slot 405 and can move in the up and down direction. The infrared detection device 20 is disposed in the accommodation cavity 406, and the detection path of the infrared detection device 20 enters the corresponding baking slot 405. In this embodiment, the electromagnetic switch 1 includes an electromagnet (not shown), an adsorbing member (not shown), and a contact switch (not shown). When the contact switch is closed, the electromagnetic switch 1 is closed, and the electromagnet and the adsorbing member are adsorbed together. When the contact switch is disconnected, the electromagnetic switch 1 is disconnected, and the electromagnet and the adsorbing member are separated. The electromagnet is disposed on the base 401. There are also a locking member (not shown) and a lifting drive mechanism (not shown). The locking member is movably disposed on the base 401, and the adsorbing member is disposed on the locking member. When the bracket 403 moves downward to a predetermined position, the contact switch is touched to make the contact switch closed. The electromagnet generates a magnetic force, and the adsorbing member is adsorbed on the electromagnet, driving the locking member to move toward one end of the bracket 403. The locking member locks downward on one end of the bracket 403 to limit the lifting drive mechanism from driving the bracket upward. When the toaster completes its work, the MCU control circuit 3 controls the contact switch to disconnect, the adsorbing member is separated from the electromagnet, and the lifting drive mechanism drives the bracket 403 upward so that the locking member disengages from the bracket 403, releasing the restraint on the bracket 403. The bracket 403 moves upward under the action of the lifting drive mechanism to push out the bread placed on the bracket 403.

[0050] In a preferred embodiment, with reference to the attached Figures 1-4 , the detection device of the toaster of the present utility model is an infrared detection device 20. A first detection hole 4021 is provided in any one of the baking slots 405 and penetrates through to the accommodation cavity 406. The detection path of the infrared detection device 20 enters the corresponding baking slot 405 through the first detection hole 4021.

[0051] In a preferred embodiment, with reference to the attached Figures 3-4 , two or more heat dissipation structures 30 are provided in the accommodation cavity 406 of the toaster of the present utility model. The two or more heat dissipation structures 30 correspond to the baking slots 405 one by one. In this embodiment, the furnace liner 402 is provided with two baking slots 405, and two heat dissipation structures 30 are provided in the accommodation cavity 406 and correspond to the two baking slots 405 one by one. In other embodiments, the furnace liner 402 may be provided with three baking slots 405, four baking slots 405, or even more. Any one of the infrared detection devices 20 includes an infrared detection element 204 and a protective cover 206. The infrared detection element 204 is provided in the accommodation cavity 406, and the protective cover 206 covers the outside of the infrared detection element 204. A detection port 209 is provided in the protective cover 206 along the direction of the detection path of the infrared detection device 20. A light-transmitting shutter 305 is provided at the detection port 209. A first air inlet hole 208 is provided on the lower side of the protective cover 206, and a first air outlet hole 207 is provided on the upper side of the protective cover 206. Any one of the heat dissipation structures 30 includes a second air inlet hole 302 and a second air outlet hole 301. The second air inlet hole 302 is provided on the side wall of the accommodation cavity 406 and penetrates through to the outside of the toaster. The second air inlet hole 302 is located below the first air inlet hole 208. The second air outlet hole 301 is provided on the side wall of the accommodation cavity 406 and penetrates through to the outside of the toaster. The second air outlet hole 301 is located above the first air outlet hole 207. After the external air flow enters the accommodation cavity 406 from the second air inlet hole 302, since the temperature in the accommodation cavity 406 is higher than the temperature outside the toaster when the toaster is working, the air flow automatically rises. By setting the second air inlet hole 302 below the first air inlet hole 208, it is convenient for the air flow to enter the protective cover 206 through the first air inlet hole 208 to dissipate heat from the temperature detection device 20, and then discharge into the accommodation cavity 406 from the first air outlet hole 207. Since the air flow automatically rises, by setting the second air outlet hole 301 above the first air outlet hole 207, it is convenient for the air flow coming out of the accommodation cavity 406 from the first air outlet hole 207 to go out through the second air outlet hole 301.

[0052] Such as Figure 5As shown, in another First Embodiment, the second exhaust hole 301 and the first exhaust hole 207 of the toaster of the present utility model are aligned in the vertical direction, the second intake hole 302 and the first intake hole 208 are aligned in the vertical direction, and the heat dissipation structure 30 further includes a first diversion channel 303 and a second diversion channel 304. The first diversion channel 303 extends from the first intake hole 208 to the second intake hole 302, and the second diversion channel 304 extends from the first exhaust hole 207 to the second exhaust hole 301. By providing the first diversion channel 303 and the second diversion channel 304, the air flow is prevented from spreading randomly in the accommodation cavity 406, and the heat dissipation efficiency of the infrared detection device 20 is higher. In this embodiment, the infrared detection device 20 is fixed to one side of the housing 404 along the longitudinal direction of the toasting slot 405. Specifically, the infrared detection element 204 is fixed to the housing 404 by a fixing member 203. The second exhaust hole 301 is provided in the housing 404, and the second intake hole 302 is provided in the base 401.

[0053] As Figure 6 shown, in another Second Embodiment, the heat dissipation structure 30 of the toaster of the present utility model includes a third diversion channel 305 and a fourth diversion channel 306. The second intake hole 302, the second exhaust hole 301, and the infrared detection element 204 are provided on the same side wall of the accommodation cavity 406. In this embodiment, both the second exhaust hole 301 and the second intake hole 302 are provided in the housing 404, and the infrared detection element 204 is fixed to the housing 404 by a fixing member 203. The third diversion channel 305 extends from the first intake hole 208 to the second intake hole 302, and the fourth diversion channel 306 extends from the first exhaust hole 207 to the second exhaust hole 301. By providing the third diversion channel 305 and the fourth diversion channel 306, the air flow is prevented from spreading randomly in the accommodation cavity 406, and the heat dissipation efficiency of the infrared detection device 20 is higher.

[0054] As Figure 8 shown, in another Third Embodiment, two toasting slots 405 are provided in the toaster of the present utility model, and the infrared detection device 20 is fixed to one side of the housing 404 along the transverse direction of the toasting slot 405.

[0055] In a preferred embodiment, the heating plate in any one of the toasting slots 405 of the toaster of the present utility model includes a first heating plate 101 and a second heating plate 102. In this embodiment, the materials of the first heating plate 101 and the second heating plate 102 are both mica sheets. One of the first heating plates 101 is provided on one side of any one of the adjacent toasting slots 405 away from the other toasting slot 405, and the second heating plate 102 is provided on the other side thereof. The first heating plate 101 and the second heating plate 102 are respectively provided with one of the first heating elements 6 in the heating control circuit 100 corresponding to the toasting slot 405.

[0056] The circuit of the toaster of the present utility model and the working principle of the preferred embodiment of the toaster are as follows: When the user uses it, put bread in any one of the toasting slots 405, set the corresponding preset heating duration through the operation button, drive the bracket 403 to move downward to a predetermined position, the electromagnetic switch is closed, and the DC power supply is provided to the MCU control circuit 3 through the step-down rectifier filter voltage regulator circuit 2. The infrared detection device 20 works, and the infrared rays enter the toasting slot 405 through the detection port 209 and the first detection hole, detect that there is bread in the toasting slot 405, and feedback the first detection information. The MCU control circuit 3 controls the first switch circuit 4 of the corresponding heating control circuit 100 to close according to the first detection information, so that the heating control circuit 100 is turned on, and the first heating element 6 of the heating control circuit 100 works. The first heating element 6 provides heat to the corresponding toasting slot 405 through the first heating plate 101 and the second heating plate 102 to heat the bread. The MCU control circuit 3 controls the electromagnetic switch 1 to cut off the power according to the preset heating duration. The electromagnetic switch 1 is disconnected, the restraint on the bracket 403 is released, and the driving mechanism drives the bracket 403 to move upward to push out the toasted bread.

[0057] In other embodiments, two adjacent baking slots 405 of the toaster of the present utility model are provided with a second heating element 7. The resistance of the second heating element 7 is greater than that of the first heating element 6. One side of one baking slot 405 away from the other baking slot 405 is provided with a first heating plate 101. The first heating plate 101 is provided with a first heating element 6 of a heating control circuit 100 corresponding to the baking slot 405. The second heating plate 102 separates the two baking slots 405, and the second heating element 7 is arranged on the second heating plate 102. The working principle of the toaster in this embodiment is as follows: When the user uses it, put bread into any one of the baking slots 405, set the corresponding preset heating duration by operating the button, drive the bracket 403 to move downward to a predetermined position, the electromagnet switch is closed, and the DC power supply is provided to the MCU control circuit 3 through the step-down rectification filtering and voltage stabilization circuit 2. The infrared detection device 20 works. The infrared ray enters the baking slot 405 through the detection port 209 and the first detection hole, detects that there is bread placed in the baking slot 405, and feeds back the first detection information. The MCU control circuit 3 controls the first switch circuit 4 of the corresponding heating control circuit 100 to close and the second switch circuit 5 of the second line 200 corresponding to the heating control circuit 100 to close according to the first detection information, so that the heating control circuit 100 is turned on and the second line 200 is turned on. The first heating element 6 and the second heating element 7 work simultaneously. The first heating element 6 provides heat to the corresponding baking slot 405 through the first heating plate 101, and the second heating element 7 provides heat to the corresponding baking slot 405 through the second heating plate 102 to heat the bread. The MCU control circuit 3 controls the electromagnet switch 1 to cut off the power according to the preset heating duration. The electromagnet switch 1 is disconnected, the constraint on the bracket 403 is released, and the driving mechanism drives the bracket 403 to move upward to push out the toasted bread.

[0058] Compared with the prior art, the present utility model has the following beneficial effects: By setting two or more groups of heating control circuits corresponding to the baking slots of the toaster one by one, the MCU control circuit controls the on-off state of the first switch circuit of the corresponding heating control circuit according to the first detection information fed back by the detection device, so as to control the conduction condition of the external power supply and the corresponding heating control circuit, and avoid the situation that all the groups of heating control circuits are turned on when only some of the baking slots are filled with bread, resulting in power waste.

[0059] The above-disclosed are only the preferred embodiments of the present utility model, and of course, they cannot be used to limit the scope of rights of the present utility model. Therefore, equivalent changes made according to the scope of the patent application of the present utility model still fall within the scope covered by the present utility model.

Claims

1. A toaster circuit, characterized in that, It includes an MCU control circuit, a step-down rectifying, filtering and voltage stabilizing circuit, and two or more heating control circuits. Two or more of the said heating control circuits correspond one-to-one to the toasting slots of the toaster. The heating control circuit is used to control the heating condition of the toasting slot. Any one of the said heating control circuits includes one or more first heating elements, a detection device and a first switch circuit. Among them, in any one of the said heating control circuits, The first heating element heats the toasting slot corresponding to the heating control circuit; The first switch circuit is used to control the conduction state of the first circuit. Among them, the first circuit is the circuit between all the first heating elements of the heating control circuit and the external power supply; The detection device is used to detect whether there is bread placed in its corresponding toasting slot and feedback the first detection information; The MCU control circuit controls the opening and closing state of the first switch circuit according to the first detection information. When the MCU control circuit judges that there is bread in the toasting slot according to the first detection information, the MCU control circuit controls the first switch circuit to close, and the first heating element is conducted with the external power supply. When the MCU control circuit judges that there is no bread in the toasting slot according to the first detection information, the MCU control circuit controls the first switch circuit to disconnect, and the first heating element is disconnected from the external power supply; The step-down rectifying, filtering and voltage stabilizing circuit is the circuit connected between the external power supply and the MCU control circuit, and provides DC power for the MCU control circuit.

2. The toaster circuit according to claim 1, characterized in that, The heating control circuit includes two or more of the said first heating elements.

3. The toaster circuit according to claim 1, characterized in that A set of second circuits is provided corresponding to two sets of the heating control circuits. One of the said heating control circuits and the second circuit jointly control the heating condition of one of the two adjacent toasting slots, and the other heating control circuit and the second circuit jointly control the heating condition of the other of the two adjacent toasting slots. The second circuit includes a second switch circuit and a second heating element; Among them, in any one of the said second circuits, The second heating element heats the two adjacent toasting slots simultaneously; The second switch circuit is used to control the conduction state of the second circuit. Among them, the MCU control circuit controls the opening and closing state of the second switch circuit according to the first detection information of any one of the two sets of heating control circuits corresponding to the second circuit.

4. The toaster circuit according to claim 3, characterized in that, The detection device is an infrared detection device.

5. The toaster circuit according to claim 1, characterized in that It also includes an electromagnet switch. The electromagnet switch is used to control the conduction state of the third route. The third route controls the working state of the lifting drive mechanism of the toaster. Among them, the third route is the circuit between the toaster circuit and the external power supply. Any one of the said heating control circuits also includes a temperature detection device, and the temperature detection device is electrically connected to the MCU control circuit.

6. The toaster circuit according to claim 5, characterized in that, When all the first switch circuits are closed, the MCU control circuit only controls any one of the temperature detection devices to work.

7. A toaster, characterized in that, It includes a base, a hearth, a housing, a bracket, and the toaster circuit according to any one of claims 1-6. The housing covers the base, and an accommodation cavity is formed between the base and the housing. The hearth is disposed in the accommodation cavity and fixed to the base. The hearth is provided with two or more baking slots, and the baking slots are arranged side by side in the transverse direction thereof. A set of the heating control circuit, the bracket, and the heating plate are correspondingly provided for any one of the baking slots. The bracket is disposed in the baking slot and is movable in the up and down direction. The detection device is disposed in the accommodation cavity, and the detection path of the detection device enters the corresponding baking slot.

8. The toaster according to claim 7, wherein The detection device is an infrared detection device. A first detection hole is opened in any one of the baking slots and penetrates through to the accommodation cavity, and the detection path of the infrared detection device enters the corresponding baking slot through the first detection hole.

9. The toaster according to claim 8, characterized in that, Two or more heat dissipation structures are disposed in the accommodation cavity, and the two or more heat dissipation structures correspond to the baking slots one by one. Any one of the infrared detection devices includes an infrared detection element and a protective cover. The infrared detection element is disposed in the accommodation cavity, and the protective cover covers the outside of the infrared detection element. A detection port is opened in the protective cover along the direction of the detection path of the infrared detection device, and a light-transmitting baffle is provided at the detection port. A first air inlet hole is opened at the lower side of the protective cover, and a first air outlet hole is opened at the upper side of the protective cover. Any one of the heat dissipation structures includes a second air inlet hole and a second air outlet hole. The second air inlet hole is opened on the side wall of the accommodation cavity and penetrates through to the outside of the toaster, and the second air inlet hole is located below the first air inlet hole. The second air outlet hole is opened on the side wall of the accommodation cavity and penetrates through to the outside of the toaster, and the second air outlet hole is located above the first air outlet hole.

10. The toaster according to claim 9, characterized in that, The second air outlet hole and the first air outlet hole are aligned in the up and down direction, and the second air inlet hole and the first air inlet hole are aligned in the up and down direction. The heat dissipation structure further includes a first diversion channel and a second diversion channel. The first diversion channel extends from the first air inlet hole to the second air inlet hole, and the second diversion channel extends from the first air outlet hole to the second air outlet hole.

11. The toaster according to claim 9, characterized in that, The heat dissipation structure includes a third diversion channel and a fourth diversion channel. The second air inlet hole, the second air outlet hole, and the infrared detection element are disposed on the same side wall of the accommodation cavity. The third diversion channel extends from the first air inlet hole to the second air inlet hole, and the fourth diversion channel extends from the first air outlet hole to the second air outlet hole.

12. The toaster according to claim 7, characterized in that, There are two baking slots, and the infrared detection device is fixed to one side of the housing arranged longitudinally along the baking slot, or the infrared detection device is fixed to one side of the housing arranged transversely along the baking slot.

Images