Cooking device

Abstract

The utility model provides a cooking device. A cooking cavity is formed in an inner container; the thermoelectric module is provided with a thermoelectric first end and a thermoelectric second end which are oppositely arranged, the thermoelectric first end is arranged in the cooking cavity, and the thermoelectric second end is arranged outside the inner container; the thermoelectric module comprises a first electronic type semiconductor, one end close to the thermoelectric second end being an electronic type first end, and a first hole type semiconductor, one end close to the thermoelectric second end being a hole type first end. The voltage detection circuit is used for detecting the voltage between the electronic type first end and the hole type first end when the electronic type first end is connected with the circuit grounding end; and the signal input end of the main control module is electrically connected with the voltage output end and the temperature detector. The temperature in the cooking cavity can be obtained according to the voltage between the hole type first end and the electronic type first end, a temperature detector is prevented from being arranged in the cooking cavity, and the cost can be reduced.

Description

Technical Field

[0001] The utility model relates to the field of kitchen equipment, in particular to a cooking device. Background Art

[0002] The cooking device may include a housing and an inner container, wherein a cooking cavity may be formed in the inner container. A heating pipe may be provided in the cooking cavity to heat the air in the cooking cavity, thereby performing a grilling cooking function. The cooking device may include a steam generator, and steam generated by the steam generator may be introduced into the cooking cavity, thereby performing a steaming cooking function.

[0003] When a cooking device is operating, the temperature inside the cooking chamber is high. This temperature may be needed to control further operation of the cooking device. Alternatively, after cooking is complete, the temperature inside the cooking chamber may still be high. If the door is suddenly opened while the device is in steaming mode, steam could scald the user. Therefore, it is necessary to monitor the temperature inside the cooking chamber for further operation. A temperature sensor is typically installed inside the cooking chamber to detect this temperature. The cooking chamber temperature is often high, and conventional temperature sensors are not resistant to high temperatures, and these high temperatures can damage them.

[0004] Currently, a high-temperature resistant temperature sensor can be installed in the cooking cavity. However, such a sensor is relatively expensive. Furthermore, the temperature inside the cooking cavity is relatively high, and the heat energy within the cooking cavity is not effectively utilized. Therefore, the present application proposes a cooking device. Summary of the Invention

[0005] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.

[0006] To this end, according to an embodiment of the present disclosure, a cooking device is proposed, comprising:

[0007] box shell;

[0008] An inner pot is arranged in the box shell, and a cooking cavity is formed in the inner pot;

[0009] A thermoelectric module is disposed in the housing, the thermoelectric module having a first thermoelectric end and a second thermoelectric end disposed opposite to each other, the first thermoelectric end being disposed in the cooking cavity, and the second thermoelectric end being disposed outside the inner pot; the thermoelectric module comprises:

[0010] a first electronic type semiconductor, wherein one end of the first electronic type semiconductor close to the thermoelectric second end is an electronic type first end, and one end of the first electronic type semiconductor close to the thermoelectric first end is an electronic type second end;

[0011] a first hole-type semiconductor, wherein one end of the first hole-type semiconductor close to the thermoelectric second end is a hole-type first end, one end of the first hole-type semiconductor close to the thermoelectric first end is a hole-type second end, and the hole-type second end is electrically connected to the electron-type second end;

[0012] a temperature detector, disposed in the box shell and outside the inner container, for detecting the air temperature between the box shell and the inner container;

[0013] a voltage detection circuit, comprising a circuit ground terminal, a voltage input terminal, and a voltage output terminal; the voltage input terminal being electrically connected to the hole-type first terminal; the electron-type first terminal being connected to or disconnected from the circuit ground terminal, the voltage detection circuit being configured to detect a voltage between the electron-type first terminal and the hole-type first terminal when the electron-type first terminal is connected to the circuit ground terminal;

[0014] A main control module, wherein the signal input end of the main control module is electrically connected to the voltage output end and the temperature detector.

[0015] A thermoelectric module is provided with a first thermoelectric end disposed within the cooking cavity, and a second thermoelectric end disposed outside the inner pot. The thermoelectric module includes a first electron-type semiconductor and a first hole-type semiconductor. When the temperature within the cooking cavity is higher than the air temperature outside the inner pot, the temperature of the first thermoelectric end is higher than the temperature of the second thermoelectric end. Based on the thermoelectric module's principle of thermoelectric power generation, a voltage is generated between the hole-type first end and the electron-type first end. A voltage detection circuit is provided to detect the voltage between the hole-type first end and the electron-type first end. Based on the voltage between the hole-type first end and the electron-type first end, the temperature within the cooking cavity, and the temperature detected by the temperature detector, a relationship between the voltage between the hole-type first end and the electron-type first end and the temperature within the cooking cavity can be determined. Based on the voltage between the hole-type first end and the electron-type first end and the temperature within the cooking cavity, the temperature within the cooking cavity and the temperature detected by the temperature detector can be determined. The temperature within the cooking cavity can be determined based on the voltage between the hole-type first end and the electron-type first end. This allows the temperature within the cooking cavity to be determined while avoiding the need for a temperature detector within the cooking cavity. A temperature detector only needs to be provided outside the inner pot, reducing costs and ensuring the reliability of the temperature detector. Furthermore, the heat within the cooking cavity can be effectively utilized, avoiding energy waste.

[0016] According to an embodiment of the present disclosure, the present invention includes:

[0017] a switch, comprising a first switch end and a second switch end, wherein the first switch end and the second switch end are closed or opened; the first switch end is electrically connected to the first end of the electronic type, and the second switch end is connected to the circuit ground end;

[0018] When the second end of the switch is closed with the first end of the switch, the first end of the electronic type is connected to the circuit ground end, so that the first end of the electronic type can be grounded, which facilitates voltage detection.

[0019] According to an embodiment of the present disclosure, the switch includes a third switch end, and the third switch end is closed or disconnected with the first switch end;

[0020] When the third end of the switch and the first end of the switch are closed, the first end of the switch and the second end of the switch are disconnected; when the first end of the switch and the second end of the switch are closed, the third end of the switch and the first end of the switch are disconnected;

[0021] The cooking device comprises:

[0022] The load is connected between the third terminal of the switch and the first terminal of the hole type, so that the thermoelectric module can supply power to the load.

[0023] According to an embodiment of the present disclosure, the switch includes a fourth switch terminal and a fifth switch terminal, the fourth switch terminal and the fifth switch terminal are closed or opened; the fourth switch terminal is electrically connected to the third switch terminal and the load;

[0024] Cooking equipment includes:

[0025] a first power supply, a positive electrode of which is electrically connected to the fifth terminal of the switch;

[0026] When the third end of the switch and the first end of the switch are closed and the fourth end of the switch and the fifth end of the switch are closed, the positive electrode of the first power supply, the first electronic end, and the load are electrically connected, and the first power supply can supply power to the thermoelectric module and the load. According to the Peltier effect, the temperature of the first thermoelectric end is lower than the temperature of the second thermoelectric end, which can cool the cooking cavity and keep the food fresh. Moreover, when there is steam in the cooking cavity, the temperature of the steam is higher than the temperature of the first thermoelectric end, which can cause the steam in the cooking cavity to quickly condense into water, thereby reducing the steam in the cavity.

[0027] According to an embodiment of the present disclosure, the voltage detection circuit includes:

[0028] an operational amplifier, wherein an output terminal of the operational amplifier is electrically connected to an inverting input terminal of the operational amplifier and an analog signal input terminal of the main control module;

[0029] a first resistor, wherein a first end of the first resistor is grounded and connected to or disconnected from the first end of the electronic type;

[0030] A second resistor, the first end of the second resistor is electrically connected to the first end of the hole type, the second resistor is a variable resistor, the second end of the second resistor, the sliding contact end of the second resistor, the in-phase input end of the operational amplifier are electrically connected to the second end of the first resistor, so that the first resistor and the second resistor can be divided to obtain the voltage more accurately.

[0031] According to an embodiment of the present disclosure, the present invention includes:

[0032] A second heat sink is provided in the housing and outside the inner container, the second heat sink is connected to the thermoelectric module, and the second heat sink is located at the second end of the thermoelectric module;

[0033] The temperature detector is arranged on the second heat sink, which can better transfer heat so that the temperature of the second end of the thermoelectric element is the same as the temperature of the second heat sink.

[0034] According to an embodiment of the present disclosure, the present invention includes:

[0035] A first heat sink is provided in the cooking cavity, connected to the thermoelectric module, and located at the first end of the thermoelectric module so that the temperature of the first end of the thermoelectric module is the same as that of the first heat sink.

[0036] According to an embodiment of the present disclosure, the second heat sink includes a first contact surface, which is located at one end of the second heat sink close to the thermoelectric module; a first heat-conducting layer is provided between the first contact surface and the thermoelectric module, and both sides of the first heat-conducting layer are respectively in contact with the first contact surface and the first end of the thermoelectric module to improve the heat conduction effect.

[0037] According to an embodiment of the present disclosure, the first heat sink includes a second contact surface, the second contact surface is located at one end of the first heat sink close to the thermoelectric module, a second heat conducting layer is provided between the second contact surface and the thermoelectric module, and both sides of the second heat conducting layer are respectively in contact with the second contact surface and the second end of the thermoelectric module, thereby improving the heat conduction effect.

[0038] According to an embodiment of the present disclosure, a cooking device is further provided, comprising:

[0039] box shell;

[0040] An inner pot is arranged in the box shell, and a cooking cavity is formed in the inner pot;

[0041] A thermoelectric module is disposed in the housing, the thermoelectric module having a first thermoelectric end and a second thermoelectric end disposed opposite to each other, the first thermoelectric end being disposed in the cooking cavity, and the second thermoelectric end being disposed outside the inner pot; the thermoelectric module comprises:

[0042] Electronic semiconductors;

[0043] The number of hole-type semiconductors is equal to that of electron-type semiconductors and they are connected alternately. Adjacent hole-type semiconductors and electron-type semiconductors are connected end to end to form a semiconductor chain. A hole-type semiconductor at one end of the semiconductor chain is a first hole-type semiconductor, and an electron-type semiconductor at the other end of the semiconductor chain is a first electron-type semiconductor.

[0044] An end of the first electron-type semiconductor away from the hole-type semiconductor to which it is connected is an electron-type first end, and the electron-type first end is located at an end of the first electron-type semiconductor close to the thermoelectric second end;

[0045] An end of the first hole-type semiconductor away from the electron-type semiconductor to which it is connected is a hole-type first end, and the hole-type first end is located at an end of the first hole-type semiconductor close to the thermoelectric second end;

[0046] a temperature detector, disposed in the box shell and outside the inner container, for detecting the air temperature between the box shell and the inner container;

[0047] a voltage detection circuit, comprising a circuit ground terminal, a voltage input terminal, and a voltage output terminal; the voltage input terminal being electrically connected to the hole-type first terminal; the electron-type first terminal being connected to or disconnected from the circuit ground terminal, the voltage detection circuit being configured to detect a voltage between the electron-type first terminal and the hole-type first terminal when the electron-type first terminal is connected to the circuit ground terminal;

[0048] A main control module, wherein the signal input end of the main control module is electrically connected to the voltage output end and the temperature detector. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 is a front view of a partial structure of a cooking device according to an embodiment of the present application;

[0050] Figure 2 is a side view of a partial structure of a cooking device according to an embodiment of the present application;

[0051] Figure 3 is a partial structural perspective diagram of a cooking device according to an embodiment of the present application;

[0052] Figure 4 is a partial structural diagram of a cooking device according to an embodiment of the present application;

[0053] Figure 5 is another partial structural diagram of a cooking device according to an embodiment of the present application;

[0054] Figure 6 is another partial structural diagram of a cooking device according to an embodiment of the present application;

[0055] Figure 7 is a front view of another partial structure of the cooking device according to an embodiment of the present application;

[0056] Figure 8 is a partial structural cross-sectional view of a cooking device according to an embodiment of the present application;

[0057] Figure 9 is a partial structural diagram of a cooking device according to an embodiment of the present application from another perspective;

[0058] Figure 10 is a partial structural diagram of a cooking device according to an embodiment of the present application from another perspective;

[0059] Figure 11 is a partial structural cross-sectional view of a cooking device according to an embodiment of the present application from another perspective;

[0060] Figure 12 is another partial structural diagram of a cooking device according to an embodiment of the present application;

[0061] Figure 13 is a schematic diagram of the connection between the thermoelectric module and the controller according to an embodiment of the present application;

[0062] Figure 14 is a schematic structural diagram of a thermoelectric module according to an embodiment of the present application;

[0063] Figure 15 is another partial structural connection diagram of the cooking device according to an embodiment of the present application;

[0064] Figure 16 is a voltage detection circuit diagram according to an embodiment of the present application;

[0065] Figure 17 is a partial structural diagram of a cooking device according to an embodiment of the present application;

[0066] Figure 18 is a partial connection diagram of a cooking device according to an embodiment of the present application;

[0067] Figure 19 is a partial connection diagram of a cooking device according to an embodiment of the present application;

[0068] Figure 20 is a partial connection diagram of a cooking device according to an embodiment of the present application;

[0069] Figure 21 is a graph showing the relationship between thermoelectric voltage and cooking cavity temperature according to an embodiment of the present application;

[0070] Figure 22 2 is a graph showing the relationship between thermoelectric voltage and temperature in the cooking cavity according to an embodiment of the present application.

[0071] In the above figures: cooking device 100; housing 1; inner pot 2; cooking cavity 21; cooking cavity opening 211; inner pot wall 22; first through hole 221; inner pot top wall 222; inner pot first side wall 223; inner pot second side wall 224; inner pot rear wall 225; door 3; fan cover 4; fan cavity 40; air inlet 41; air outlet 42; fan 5; first heating device 61; second heating device 62; third heating device 63; steam generator 72; water storage box 73; water pump 74; controller 8; voltage detection circuit 81; voltage input terminal 811; voltage output terminal 812; circuit ground terminal 813; operational amplifier 814; first resistor R1; second resistor R2; main control module 82; thermoelectric module 91; thermoelectric first terminal 911; thermoelectric second terminal 912; electronic semiconductor 913; first Sub-type semiconductor 9131; electron-type first end 91311; electron-type second end 91312; hole-type semiconductor 914; first hole-type semiconductor 9141; hole-type first end 91411; hole-type second end 91412; conductive sheet 915; first insulating thermally conductive layer 9161; second insulating thermally conductive layer 9162; temperature detector 92; first heat sink 941; first heat sink 9411; second heat sink 9412; third heat sink 9413; second heat sink 942; fourth heat sink 9421; fifth heat sink 9422; first switch 961; switch first end 9611; switch second end 9612; switch third end 9613; second switch 962; switch fourth end 9621; switch fifth end 9622; load 971; first power supply 972; second power supply 973. DETAILED DESCRIPTION

[0072] In order to make the purpose and implementation of this application clearer, the exemplary implementation of this application will be clearly and completely described below in conjunction with the drawings in the exemplary embodiments of this application. Obviously, the described exemplary embodiments are only part of the embodiments of this application, not all of the embodiments.

[0073] It should be noted that the brief descriptions of terms in this application are only for the purpose of facilitating the understanding of the embodiments described below, and are not intended to limit the embodiments of this application. Unless otherwise specified, these terms should be understood according to their ordinary and usual meanings.

[0074] In the specification and claims of this application and the accompanying drawings, the terms "first," "second," "third," etc. are used to distinguish similar or similar objects or entities, and are not necessarily intended to limit a particular order or sequence, unless otherwise noted. It should be understood that the terms used in this manner are interchangeable under appropriate circumstances.

[0075] The terms "comprise," "comprises," and "having," and any variations thereof, are intended to cover but not exclude inclusion; for example, a product or device comprising a list of components is not necessarily limited to all the components expressly listed but may include other components not expressly listed or inherent to such product or device.

[0076] The present application proposes a cooking device 100 , which will be described below with reference to the accompanying drawings.

[0077] refer to Figures 1-4 The cooking device 100 may include a housing 1. The housing 1 may be used to protect components located inside the housing 1.

[0078] The height direction of the housing 1 can be from the bottom to the top of the housing 1. The housing 1 can have a length direction. The length direction of the housing 1 can be from one side end to the other side end of the housing 1. The housing 1 can have a front-to-back direction. The front of the housing 1 can be the side of the housing 1 facing the user. Among the height direction, length direction, and front-to-back direction of the housing 1, any two directions can be perpendicular to each other.

[0079] refer to Figures 1-4 The cooking device 100 may include an inner container 2. The inner container 2 may be disposed within the housing 1. A cooking cavity 21 may be formed within the inner container 2. The cooking cavity 21 may be a cavity for placing food. A cooking cavity opening 211 may be provided at the front end of the cooking cavity to facilitate placing food into or removing food from the cooking cavity.

[0080] The cooking device 100 may include a door 3. The door 3 may be movably connected to the front side of the housing. The door 3 may be rotatably connected to the housing 1. The door 3 may be located at the front end of the cooking cavity opening and is used to open or close the cooking cavity opening.

[0081] In this application, reference is made to Figure 5-Figure 6 The inner liner may include an inner liner wall 22. The inner liner wall 22 may include an inner liner top wall 222. The inner liner top wall may be located at the top of the inner liner. The inner liner wall 22 may include an inner liner first side wall 223. The inner liner first side wall may be located at one end of the inner liner in the length direction of the box shell. The inner liner wall may include an inner liner second side wall 224. The inner liner second side wall may be located at the other end of the inner liner in the length direction of the box shell. The inner liner first side wall 223 and the inner liner second side wall 224 may be arranged opposite to each other. The inner liner wall 22 may include an inner liner rear wall 225. The inner liner rear wall may be located at the rear end of the inner liner.

[0082] In this application, reference is made to Figure 7-Figure 8The cooking device may include a fan chamber 40. The fan chamber 40 may be located within the inner container. The cooking device may include an air inlet 41. The air inlet may connect the fan chamber with the cooking chamber. The air inlet may be located within the inner container. The cooking device may include an air outlet 42. The air outlet may connect the fan chamber with the cooking chamber. The air outlet may be located within the inner container. The fan chamber may be located at the rear side of the cooking chamber.

[0083] The cooking device may include a blower 5. The blower 5 may include a fan. The fan may be arranged in the blower cavity so that the air in the cooking cavity flows into the blower cavity through the air inlet and then flows back to the cooking cavity through the air outlet.

[0084] The blower 5 may include a fan motor. The fan motor may be connected to the fan to drive the fan to rotate. The fan motor drives the fan to rotate so that the air in the cooking cavity flows into the blower cavity through the air inlet and then flows back to the cooking cavity through the air outlet.

[0085] Setting up a fan can establish air circulation between the fan cavity and the cooking cavity, making the air temperature and humidity in each part of the cooking cavity and the fan cavity relatively uniform, avoiding large temperature or humidity differences between two places that are far apart, and avoiding uneven cooking caused by large temperature differences.

[0086] The rotating shaft of the fan motor can pass through the rear wall of the inner tank from behind and be inserted into the fan cavity and connected to the fan, so that most of the fan motor is arranged outside the inner tank to avoid the steam or high temperature in the inner tank affecting the fan motor.

[0087] In this application, reference is made to Figure 7-Figure 8 The cooking device 100 may include a fan cover 4. The fan cover 4 may be disposed in the inner pot 2. The fan cover and the inner pot may define a fan cavity 40.

[0088] The fan cover 4 can be located in front of the rear wall of the inner container. The fan cover and the rear wall of the inner container can define a fan cavity. The fan cavity can be located behind the cooking cavity.

[0089] The fan cover plate 4 may be formed with an air inlet 41. The air inlet 41 may connect the fan cavity and the cooking cavity. The air inlet 41 may be an inlet for air to flow from the cooking cavity into the fan cavity.

[0090] The fan cover plate 4 may be formed with an air outlet 42. The air outlet 42 may connect the fan cavity and the cooking cavity. The air outlet 42 may be an outlet for air to flow from the fan cavity to the cooking cavity.

[0091] In this application, reference is made to Figures 8-10 The cooking device may include a first heating device 61. The first heating device 61 may be used to heat the air in the fan cavity. The first heating device 61 may be at least partially disposed in the fan cavity to heat the air in the fan cavity.

[0092] The first heating device 61 may include a first heating unit. The first heating unit may be disposed within the fan cavity. The first heating unit may be disposed at the fan and may surround the fan along the circumference of the fan. The first heating unit may be spirally wound into at least two turns.

[0093] The first heating device 61 can heat the air after it flows out from the centrifugal fan, and the heated air flows back to the cooking cavity through the air outlet.

[0094] In this application, reference is made to Figures 8-10 The cooking device may include a second heating device 62. The second heating device may be at least partially disposed within the cooking cavity to heat the air within the cooking cavity. The second heating device may include a second heating portion. The second heating portion may be disposed within the cooking cavity. The second heating portion may be disposed at the top of the cooking cavity.

[0095] The second heating portion 621 can heat the air in the cooking cavity. The second heating portion 611 can be a heating wire. The second heating device can be located above the area where the food to be cooked is placed.

[0096] In the present application, the cooking device may include a third heating device 63. The third heating device 63 is at least partially located below the inner pot to heat the air inside the inner pot. The third heating device 63 may include a third heating portion. The third heating portion may be located below the inner pot. The third heating portion may be a heating wire.

[0097] In this application, reference is made to Figures 8-10 The cooking device may include a steam generator 72. The steam generator 72 may be disposed within the housing. The steam generator 72 may be disposed outside the inner pot. The steam generator may be disposed behind the inner pot. The steam generator is configured to generate steam to supply steam to the cooking cavity, allowing the cooking device to steam food.

[0098] The steam generator has a steam outlet which is communicated with the cooking cavity so as to pass steam into the cooking cavity.

[0099] In the present application, a steam inlet is provided on the inner pot. The steam inlet is connected to the steam outlet, and the steam inlet is connected to the cooking cavity, so that the steam outlet and the cooking cavity are connected. The steam inlet can be formed on the rear wall of the inner pot, and the steam inlet can be connected to the cooking cavity through the fan cavity.

[0100] In this application, the inner pot is provided with a steam inlet. The steam outlet of the steam generator is connected to a steam outlet pipe, which is inserted into the steam inlet, so that the steam outlet communicates with the fan cavity through the steam outlet pipe. The steam inlet can be formed on the rear wall of the inner pot. The steam outlet pipe can communicate with the fan cavity and the cooking cavity through the steam outlet pipe.

[0101] In this application, reference is made to Figures 8-10 The cooking device may include a water storage box 73 for storing water. The water storage box may be arranged inside the casing. The water storage box may be arranged outside the inner pot. The water storage box may be arranged on the top of the inner pot.

[0102] The cooking device may include a water pump 74. The water pump 74 may be located behind the inner pot, with its water inlet connected to the water storage box and its water outlet connected to the steam generator. Using its pumping capacity, the water pump 74 transfers water from the water storage box to the steam generator.

[0103] When a cooking device is operating, the temperature inside the cooking cavity is relatively high. Further operation of the cooking device may need to be controlled based on the temperature inside the cooking cavity during cooking, necessitating a temperature sensor inside the cooking cavity to detect the temperature. After cooking is complete, the temperature inside the cooking cavity remains relatively high. If the door is suddenly opened during steaming mode, the steam could easily scald the user, necessitating a temperature sensor inside the cooking cavity to detect the temperature. The temperature inside the cooking cavity is generally relatively high, necessitating a high-temperature-resistant temperature sensor. However, high-temperature-resistant temperature sensors are relatively expensive. Furthermore, the high temperature inside the cooking cavity does not effectively utilize the heat energy within the cooking cavity.

[0104] In this application, reference is made to Figure 11-13 The cooking device 100 may include a thermoelectric module 91. The thermoelectric module 91 may be disposed in the housing. The thermoelectric module may be partially disposed in the cooking cavity of the inner pot, and partially disposed outside the inner pot.

[0105] The thermoelectric module can be used to generate electricity. Thermoelectric module 91 can include a thermoelectric first end 911. Thermoelectric module 91 can include a thermoelectric second end 912. The thermoelectric first end can be located inside the cooking cavity, and the thermoelectric second end can be located outside the inner pot.

[0106] A first through hole 221 may be formed in the inner pot wall. The first through hole connects the cooking cavity with the space outside the inner pot. The first thermoelectric end of the thermoelectric module can be inserted into the cooking cavity from outside the inner pot through the first through hole, while the second thermoelectric end is located outside the inner pot.

[0107] The first through hole can be formed on the top wall of the inner container. The first through hole can be formed on the first side wall of the inner container. The first through hole can be formed on the second side wall of the inner container. The first through hole 221 can be formed on the rear wall of the inner container.

[0108] In this application, reference is made to Figure 11-13The thermoelectric module 91 may include a first electron-type semiconductor 9131. An end of the first electron-type semiconductor 931 close to the thermoelectric second end may be an electron-type first end 91311. An end of the first electron-type semiconductor 931 close to the thermoelectric first end may be an electron-type second end 91312.

[0109] Thermoelectric module 91 may include a first hole-type semiconductor 9141. The end of first hole-type semiconductor 9141 near the thermoelectric second end may be a hole-type first end 91411. The end of first hole-type semiconductor 9141 near the thermoelectric module first end may be a hole-type second end 91412. Hole-type second end 91412 may be electrically connected to electron-type second end 91312.

[0110] When the temperature of the thermoelectric first end is greater than the temperature of the thermoelectric second end, the thermoelectric module can generate electricity according to the Seebeck effect, so that the thermoelectric module can be a power source, and there is a voltage between the hole-type first end and the electron-type first end.

[0111] In this application, reference is made to Figure 11-14 The thermoelectric module may include an electron-type semiconductor 913. There may be at least one electron-type semiconductor. The thermoelectric module may include a hole-type semiconductor 914. There may be at least one hole-type semiconductor. The number of hole-type semiconductors may be equal to the number of electron-type semiconductors.

[0112] Hole-type semiconductors and electron-type semiconductors are connected alternately, and adjacent hole-type semiconductors and electron-type semiconductors are connected end to end. Adjacent hole-type semiconductors and electron-type semiconductors are connected to form a semiconductor chain. A hole-type semiconductor located at one end of the semiconductor chain is a first hole-type semiconductor, and an electron-type semiconductor located at the other end of the semiconductor chain is a first electron-type semiconductor.

[0113] An end of the first electron-type semiconductor away from the hole-type semiconductor connected to the first electron-type semiconductor is the electron-type first end, and the electron-type first end is located at an end of the first electron-type semiconductor close to the thermoelectric second end.

[0114] An end of the first hole-type semiconductor away from the electron-type semiconductor connected to the first hole-type semiconductor is a hole-type first end, and the hole-type first end is located at an end of the first hole-type semiconductor close to the thermoelectric second end.

[0115] The direction from the first thermoelectric end to the second thermoelectric end can be the thickness direction of the thermoelectric module. The hole-type semiconductor can be arranged along the thickness direction of the thermoelectric module. The electron-type semiconductor can be arranged along the thickness direction of the thermoelectric module.

[0116] In the present application, the thermoelectric module may include a conductive sheet 915 , and adjacent hole-type semiconductors and electron-type semiconductors may be electrically connected through the conductive sheet.

[0117] In the present application, the cooking device may include a temperature detector 92. The temperature detector 92 may be located inside the housing. The temperature detector may be located outside the inner pot. The temperature detector may be used to detect the temperature of the air between the housing and the inner pot. The temperature detector may be a temperature sensor.

[0118] In this application, reference is made to Figure 15 The cooking device may include a controller 8. The controller may be arranged in the housing. The controller may be connected to a temperature detector.

[0119] refer to Figure 16 The cooking device may include a voltage detection circuit 81. The voltage detection circuit may include a voltage input terminal 811. The voltage detection circuit may include a voltage output terminal 812. The voltage detection circuit 81 may include a circuit ground terminal 813. The controller may include the voltage detection circuit 81.

[0120] The voltage input terminal 811 can be electrically connected to the hole-type first terminal 91411. The voltage input terminal 811 can be electrically connected to the hole-type first terminal through the conductive sheet 915.

[0121] The circuit ground terminal can be electrically connected to or disconnected from the electronic type first terminal. The voltage detection circuit can be used to detect the voltage between the electronic type first terminal and the hole type first terminal when the circuit ground terminal is electrically connected to the electronic type first terminal.

[0122] When the circuit grounding end is connected to the electronic type first end, the circuit grounding end may be electrically connected to the electronic type first end through the conductive sheet.

[0123] Along the thickness direction of the thermoelectric module, the electron-type semiconductor is located between the two conductive sheets connected to its two ends, and the hole-type semiconductor is located between the two conductive sheets connected to its two ends.

[0124] The cooking device may include a main control module 82. The signal input terminal of the main control module may be electrically connected to the voltage output terminal. The signal input terminal of the main control module may be electrically connected to the temperature detector. The analog signal input terminal of the main control module may be connected to the voltage output terminal. The controller may include the main control module 82.

[0125] A thermoelectric module is provided with a first thermoelectric end disposed within the cooking cavity, and a second thermoelectric end disposed outside the inner pot. The thermoelectric module includes a first electron-type semiconductor and a first hole-type semiconductor. When the temperature within the cooking cavity is higher than the air temperature outside the inner pot, the temperature of the first thermoelectric end is higher than the temperature of the second thermoelectric end. Based on the thermoelectric module's principle of thermoelectric power generation, a voltage is generated between the hole-type first end and the electron-type first end. A voltage detection circuit is provided to detect the voltage between the hole-type first end and the electron-type first end. Based on the voltage between the hole-type first end and the electron-type first end, the temperature within the cooking cavity, and the temperature detected by the temperature detector, a relationship between the voltage between the hole-type first end and the electron-type first end and the temperature within the cooking cavity can be determined. Based on the voltage between the hole-type first end and the electron-type first end and the temperature within the cooking cavity, the temperature within the cooking cavity and the temperature detected by the temperature detector can be determined. The temperature within the cooking cavity can be determined based on the voltage between the hole-type first end and the electron-type first end. This allows the temperature within the cooking cavity to be determined while avoiding the need for a temperature detector within the cooking cavity. A temperature detector only needs to be provided outside the inner pot, reducing costs and ensuring the reliability of the temperature detector. Furthermore, the heat within the cooking cavity can be effectively utilized, avoiding energy waste.

[0126] In the present application, the higher the temperature difference between the thermoelectric first end and the thermoelectric second end, the greater the voltage between the hole-type first end and the electron-type first end.

[0127] When the voltage detection circuit detects voltage, the thermoelectric module serves as a power source and is not connected to a load. Therefore, the load current of the thermoelectric module is 0. The temperature Th in the cooking cavity can be determined based on the temperature Tc detected by the temperature detector and the voltage V between the hole-type first end and the electron-type first end.

[0128] Specifically, the temperature detected by the temperature detector is the outer shell temperature Tc, and the voltage between the hole-type first end and the electron-type first end is the thermoelectric voltage V. At a certain outer shell temperature, the thermoelectric voltage is obtained.

[0129] When the load current is 0, the temperature in the cooking cavity can be determined through a functional relationship between the thermoelectric voltage and the temperature in the cooking cavity. The thermoelectric voltage and the temperature Th in the cooking cavity can be in a proportional relationship.

[0130] Alternatively, refer to Figure 21-22 , we can use the table lookup method to determine the temperature inside the cooking cavity based on the thermoelectric voltage when the load current is 0 at a certain external temperature. Figure 21 This is the relationship diagram between the thermoelectric voltage, load current and cooking cavity temperature Th when the outer temperature of the outer tank Tc = 30℃. Figure 22 This is the relationship diagram between the thermoelectric voltage, load current and cooking cavity temperature Th when the outer temperature of the outer tank Tc = 50°C.

[0131] When the outer temperature of the outer pot Tc = 30°C, the load current is 0, and the thermoelectric voltage is 2.5V, the temperature inside the cooking cavity Th = 100°C. When the outer temperature of the outer pot Tc = 30°C, the load current is 0, and the thermoelectric voltage is 4.4V, the temperature inside the cooking cavity Th = 150°C.

[0132] When the outer temperature of the outer pot Tc = 50 ° C, the load current is 0, and the thermoelectric voltage is 1.8 V, the temperature inside the cooking cavity Th = 100 ° C. When the outer temperature of the outer pot Tc = 50 ° C, the load current is 0, and the thermoelectric voltage is 3.7 V, the temperature inside the cooking cavity Th = 150 ° C.

[0133] Among them, when the external temperature Tc of the outer tank is constant, the load current is 0, and the cooking cavity temperature corresponding to the target thermoelectric voltage value can be calculated by the cooking cavity temperature corresponding to the two thermoelectric voltage values, wherein the target thermoelectric voltage value is between the two thermoelectric voltage values.

[0134] The thermoelectric voltage value at the target outer tank temperature Tc can be calculated through the thermoelectric voltage values ​​at the two outer tank temperatures Tc, and the target outer tank temperature Tc can be between the two outer tank temperatures Tc.

[0135] In this application, reference is made to Figure 18 The voltage detection circuit may include an operational amplifier 814, the output end of the operational amplifier is electrically connected to the inverting input end of the operational amplifier, and the output end of the operational amplifier is electrically connected to the analog signal input end of the main control module.

[0136] The positive power supply terminal of the operational amplifier is connected to the positive electrode of the second power supply 973. The negative power supply terminal of the operational amplifier is grounded.

[0137] The voltage detection circuit may include a first resistor R1, wherein a first end of the first resistor is grounded. The voltage detection circuit may include a second resistor R2, which may be a variable resistor. The first end of the second resistor may be electrically connected to the first end of the hole type. The second end of the second resistor, the sliding contact end of the second resistor, the second end of the first resistor, and the non-inverting input end of the operational amplifier are electrically connected, so that the first resistor and the second resistor can divide the voltage and more accurately obtain the voltage.

[0138] In the present application, the thermoelectric module 91 may include a first insulating heat-conducting layer 9161 located at a first end of the thermoelectric module and a second insulating heat-conducting layer 9162 located at a second end of the thermoelectric module.

[0139] The electron-type semiconductor 913 and the hole-type semiconductor 914 may be located between the first insulating heat-conducting layer 9161 and the second insulating heat-conducting layer 9162 .

[0140] In the present application, the cooking device may include a first heat sink 941. The first heat sink may be connected to the thermoelectric first terminal of the thermoelectric module. The first heat sink may be connected to the thermoelectric module so that the temperature of the thermoelectric first terminal is the same as the temperature of the first heat sink.

[0141] A first heat-conducting layer may be provided between the first heat sink and the thermoelectric module. The first heat-conducting layer may be thermally conductive silicone grease.

[0142] The first heat sink includes a second contact surface located at an end of the first heat sink proximal to the thermoelectric module. A second thermally conductive layer is disposed between the second contact surface and the thermoelectric module. Two sides of the second thermally conductive layer respectively contact the second contact surface and the second end of the thermoelectric module, thereby enhancing heat conduction.

[0143] The thermoelectric first end and the thermoelectric second end of the thermoelectric module may be two ends in a thickness direction of the thermoelectric module.

[0144] refer to Figure 17 The first heat sink may include a first heat sink 9411. The first heat sink is located at an end of the first heat sink that is close to the thermoelectric module. The thickness of the first heat sink may be the same as the thickness of the thermoelectric module. A first thermal conductive layer may be provided between the first heat sink 9411 and the thermoelectric module.

[0145] The first heat sink may include a second heat sink 9412. The second heat sink is connected to the first heat sink at one end near the thermoelectric module. There may be multiple second heat sinks. The multiple second heat sinks may be spaced apart in a first direction, and the first direction may be perpendicular to the thickness of the first heat sink. The extension directions of two adjacent second heat sinks may be parallel.

[0146] The first heat sink may include a third heat sink 9413. The third heat sink may be disposed at an end of the first heat sink away from the thermoelectric module. The end of the second heat sink away from the thermoelectric module may be connected to the third heat sink. The thickness of the third heat sink may be the same as that of the first heat sink.

[0147] In the present application, the cooking device may include a second heat sink 942. The second heat sink may be connected to the thermoelectric second terminal of the thermoelectric module. The second heat sink may be connected to the thermoelectric module to facilitate heat transfer, so that the temperature of the thermoelectric second terminal is the same as the temperature of the second heat sink.

[0148] A second heat conducting layer may be provided between the second heat sink and the thermoelectric module. The second heat sink may include a fourth heat sink 9421. The second heat sink is located at an end of the second heat sink that is closest to the thermoelectric module. The thickness of the second heat sink may be the same as the thickness of the thermoelectric module.

[0149] The second heat sink includes a first contact surface. The first contact surface is located at an end of the second heat sink that is closest to the thermoelectric module. A first thermally conductive layer is disposed between the first contact surface and the thermoelectric module. Two sides of the first thermally conductive layer are in contact with the first contact surface and the first end of the thermoelectric module, respectively, to enhance heat conduction.

[0150] The second heat sink may include a fifth heat sink 9422. The fifth heat sink is connected to the fourth heat sink at one end near the thermoelectric module. There may be multiple fifth heat sinks. These fifth heat sinks may be spaced apart in a first direction, which may be perpendicular to the thickness of the fourth heat sink. The extension directions of two adjacent fifth heat sinks may be parallel.

[0151] A second heat conducting layer may be provided between the fourth heat sink and the thermoelectric module.

[0152] In this application, reference is made to Figure 16 The cooking device circuit may include a switch. The switch may include a first switch terminal 9611. The switch may include a second switch terminal 9612.

[0153] The first end of the switch circuit can be connected to the electronic type first end 91311, and the second end of the switch is connected to the circuit ground end of the voltage detection circuit. The first end of the switch and the second end of the switch are closed or opened.

[0154] When the first end of the switch and the second end of the switch are closed, the first end of the electronic type and the circuit ground end of the voltage detection circuit are electrically connected, so that the first end of the electronic type is grounded, which facilitates voltage detection. When the first end of the switch and the second end of the switch are disconnected, the first end of the electronic type and the circuit ground end of the voltage detection circuit are disconnected.

[0155] In the present application, the switch may include a switch third terminal 9613. The switch third terminal is closed or opened with respect to the switch first terminal.

[0156] When the third end of the switch and the first end of the switch are closed, the first end of the switch and the second end of the switch are disconnected; when the first end of the switch and the second end of the switch are closed, the third end of the switch and the first end of the switch are disconnected.

[0157] The cooking device may include a load 971. Load 971 may be connected between the third terminal of the switch and the first terminal of the cavity module. When the temperature of the first thermoelectric terminal is higher than the temperature of the second thermoelectric terminal, the thermoelectric module generates electricity, and the thermoelectric module serves as a power source for the load, enabling the thermoelectric module to power the load.

[0158] The load may be a lamp of the cooking device, or a Bluetooth probe. When there are multiple loads, the multiple loads may be connected in parallel or in series. The cooking device may include a voltage regulator tube for voltage stabilization.

[0159] In the present application, the switch may include a first switch 961. The first switch may include a first switch terminal, a second switch terminal, and a third switch terminal. The first switch may be a relay.

[0160] In the present application, the switch may include a switch fourth terminal 9621. The switch may include a switch fifth terminal 9622. The switch fourth terminal and the switch fifth terminal are closed or open. The switch fourth terminal is electrically connected to the switch third terminal and the load.

[0161] The Peltier effect refers to the phenomenon that when a direct current passes through a galvanic couple composed of two semiconductor materials, one end of the galvanic couple absorbs heat and the other end releases heat.

[0162] refer to Figure 19 The cooking device may include a first power source 972. The positive electrode of the first power source 972 is electrically connected to the fifth terminal of the switch.

[0163] refer to Figure 19 When the third end of the switch and the first end of the switch are closed, and the fourth end of the switch and the fifth end of the switch are closed, the positive electrode of the first power supply, the first end of the electronic type, and the load are electrically connected, and the first power supply can supply power to the thermoelectric module and the load. According to the Peltier effect, the temperature of the first end of the thermoelectric type is lower than the temperature of the second end of the thermoelectric type, which can cool the cooking cavity and keep the food fresh. Moreover, when there is steam in the cooking cavity, the temperature of the steam is higher than the temperature of the first end of the thermoelectric type. When there is a first heat sink, the temperature of the steam is higher than the temperature of the first heat sink, which can make the steam in the cooking cavity quickly condense into water on the first end of the thermoelectric type and / or the first heat sink, thereby reducing the steam in the cavity.

[0164] In this application, reference is made to Figure 20 The switch may include a second switch 962. The second switch may include a switch fourth terminal 9621. The second switch may include a switch fifth terminal 9622. The second switch may be a diode, a metal oxide semiconductor field effect transistor, or a relay.

[0165] In the present application, the cooking device may include a humidity detector. The humidity detector may be disposed in the cooking cavity. The humidity detector may be used to detect the humidity in the cooking cavity. The humidity detector may be a humidity sensor.

[0166] The cooking cavity can be cooled by the thermoelectric module to reduce the temperature inside the cooking cavity. When the temperature inside the cooking cavity is below a certain range, or when both the temperature and humidity inside the cooking cavity are below a certain range, the door can automatically open or the cooking device can remind the user to open the door, thereby ensuring the smooth progress of the cooking process and preventing damage to the human body caused by high temperature or hot steam.

[0167] When the cooking cavity needs to be kept fresh, the thermoelectric module can be used to cool the cooking cavity, thereby keeping the food in the cooking cavity cool and fresh. The cooking device can have a first mode in which frozen food is placed in the cooking cavity and automatically cooks the food after a certain period of time. Before cooking, the cooking cavity can keep the food fresh, thereby ensuring the freshness of the food before cooking.

[0168] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

[0169] For ease of explanation, the above description has been presented in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations are possible. The above embodiments have been selected and described to better explain the principles and practical applications, thereby enabling those skilled in the art to better utilize the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. A cooking device, characterized in that: include: box shell; An inner pot is arranged in the box shell, and a cooking cavity is formed in the inner pot; A thermoelectric module is disposed in the housing, the thermoelectric module having a first thermoelectric end and a second thermoelectric end disposed opposite to each other, the first thermoelectric end being disposed in the cooking cavity, and the second thermoelectric end being disposed outside the inner pot; the thermoelectric module comprises: a first electronic type semiconductor, wherein one end of the first electronic type semiconductor close to the thermoelectric second end is an electronic type first end, and one end of the first electronic type semiconductor close to the thermoelectric first end is an electronic type second end; a first hole-type semiconductor, wherein one end of the first hole-type semiconductor close to the thermoelectric second end is a hole-type first end, one end of the first hole-type semiconductor close to the thermoelectric first end is a hole-type second end, and the hole-type second end is electrically connected to the electron-type second end; a temperature detector, disposed in the box shell and outside the inner container, for detecting the air temperature between the box shell and the inner container; a voltage detection circuit, comprising a circuit ground terminal, a voltage input terminal, and a voltage output terminal; the voltage input terminal being electrically connected to the hole-type first terminal; the electron-type first terminal being connected to or disconnected from the circuit ground terminal, the voltage detection circuit being configured to detect a voltage between the electron-type first terminal and the hole-type first terminal when the electron-type first terminal is connected to the circuit ground terminal; A main control module, wherein the signal input end of the main control module is electrically connected to the voltage output end and the temperature detector.

2. The cooking device according to claim 1, wherein: include: a switch, comprising a first switch end and a second switch end, wherein the first switch end and the second switch end are closed or opened; the first switch end is electrically connected to the first end of the electronic type, and the second switch end is connected to the circuit ground end; When the second end of the switch is closed to the first end of the switch, the first end of the electronic type is connected to the circuit ground end.

3. The cooking device according to claim 2, wherein: The switch includes a third end of the switch, and the third end of the switch is closed or disconnected with the first end of the switch; When the third end of the switch and the first end of the switch are closed, the first end of the switch and the second end of the switch are disconnected; When the first end of the switch and the second end of the switch are closed, the third end of the switch and the first end of the switch are disconnected; The cooking device comprises: The load is connected between the third terminal of the switch and the first terminal of the cavity.

4. The cooking device according to claim 3, wherein: The switch includes a fourth switch terminal and a fifth switch terminal, wherein the fourth switch terminal and the fifth switch terminal are closed or opened; the fourth switch terminal is electrically connected to the third switch terminal and the load; Cooking equipment includes: a first power supply, a positive electrode of which is electrically connected to the fifth terminal of the switch; When the third end of the switch and the first end of the switch are closed and the fourth end of the switch and the fifth end of the switch are closed, the positive electrode of the first power supply, the first end of the electronic type and the load are electrically connected.

5. The cooking device according to claim 1, wherein The voltage detection circuit comprises: an operational amplifier, wherein an output terminal of the operational amplifier is electrically connected to an inverting input terminal of the operational amplifier and an analog signal input terminal of the main control module; a first resistor, wherein a first end of the first resistor is grounded and connected to or disconnected from the first end of the electronic type; A second resistor, wherein the first end of the second resistor is electrically connected to the first end of the hole type, the second resistor is a variable resistor, and the second end of the second resistor, the sliding contact end of the second resistor, the non-inverting input end of the operational amplifier are electrically connected to the second end of the first resistor.

6. The cooking device according to claim 1, wherein include: A second heat sink is provided in the housing and outside the inner container, the second heat sink is connected to the thermoelectric module, and the second heat sink is located at the second end of the thermoelectric module; The temperature detector is arranged on the second heat dissipation element.

7. The cooking device according to claim 1, wherein include: The first heat sink is provided in the cooking cavity, the first heat sink is connected to the thermoelectric module, and the first heat sink is located at the first end of the thermoelectric module.

8. The cooking device according to claim 6, wherein: The second heat sink includes a first contact surface, which is located at one end of the second heat sink close to the thermoelectric module; a first heat conducting layer is provided between the first contact surface and the thermoelectric module, and both sides of the first heat conducting layer are in contact with the first contact surface and the first end of the thermoelectric module respectively.

9. The cooking device according to claim 7, wherein: The first heat sink includes a second contact surface, which is located at one end of the first heat sink close to the thermoelectric module. A second heat conducting layer is provided between the second contact surface and the thermoelectric module, and both sides of the second heat conducting layer are in contact with the second contact surface and the second end of the thermoelectric module respectively.

10. A cooking device, characterized in that: include: box shell; An inner pot is arranged in the box shell, and a cooking cavity is formed in the inner pot; A thermoelectric module is disposed in the housing, the thermoelectric module having a first thermoelectric end and a second thermoelectric end disposed opposite to each other, the first thermoelectric end being disposed in the cooking cavity, and the second thermoelectric end being disposed outside the inner pot; the thermoelectric module comprises: Electronic semiconductors; The number of hole-type semiconductors is equal to that of electron-type semiconductors and they are connected alternately. Adjacent hole-type semiconductors and electron-type semiconductors are connected end to end to form a semiconductor chain. A hole-type semiconductor at one end of the semiconductor chain is a first hole-type semiconductor, and an electron-type semiconductor at the other end of the semiconductor chain is a first electron-type semiconductor. An end of the first electron-type semiconductor away from the hole-type semiconductor to which it is connected is an electron-type first end, and the electron-type first end is located at an end of the first electron-type semiconductor close to the thermoelectric second end; An end of the first hole-type semiconductor away from the electron-type semiconductor to which it is connected is a hole-type first end, and the hole-type first end is located at an end of the first hole-type semiconductor close to the thermoelectric second end; a temperature detector, disposed in the box shell and outside the inner container, for detecting the air temperature between the box shell and the inner container; a voltage detection circuit, comprising a circuit ground terminal, a voltage input terminal, and a voltage output terminal; the voltage input terminal being electrically connected to the hole-type first terminal; the electron-type first terminal being connected to or disconnected from the circuit ground terminal, the voltage detection circuit being configured to detect a voltage between the electron-type first terminal and the hole-type first terminal when the electron-type first terminal is connected to the circuit ground terminal; A main control module, wherein the signal input end of the main control module is electrically connected to the voltage output end and the temperature detector.

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