Cooking device

Abstract

An object of the present disclosure is to provide a heating cooker that reduces a decrease in temperature in a heating chamber when water is supplied to a water supply body and quickly heats and cooks an object to be heated.SOLUTION: A heating cooker according to the present disclosure includes a heating chamber that houses an object to be heated, a circulation fan that air in the heating chamber, blows out the sucked air into the heating chamber, forms a circulation flow path in an internal space of the heating chamber, and serves as an air blowing source, a convection heater that heats the air sucked from the circulation fan, a supply body that supplies water to the air heated by the convection heater, and a water tank that supplies water to the water supply body, and includes a water heating mechanism that heats or keeps warm water supplied to the water supply body by using waste heat of the heating chamber.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present disclosure relates to a cooking appliance. [Background technology]

[0002] Patent Document 1 discloses a cooking device with a steam generating unit that is highly reliable and does not burden users or assembly workers. This cooking device includes a steam generating unit fixed to an insulating plate between an inner box and an outer box, and a steam ejection unit connected to the outlet of the steam generating unit via a steam connection pipe. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2014-234940 Summary of the Invention [Problem to be solved by the invention]

[0004] An object of the present disclosure is to provide a cooking device that reduces a temperature drop in a heating chamber when water is supplied to a water supplier, and quickly cooks an object to be heated. [Means for solving the problem]

[0005] The heating cooker of the present disclosure comprises a heating chamber that accommodates an object to be heated, a circulation fan that serves as an air source that draws in air from the heating chamber and blows it out into the heating chamber, forming a circulation flow path in the internal space of the heating chamber, a convection heater that heats the air drawn in by the circulation fan, a water supplier that supplies water to the air heated by the convection heater, and a water tank that supplies water to the water supplier, and is equipped with a water heating mechanism that uses waste heat from the heating chamber to heat or keep warm the water supplied to the water supplier. [Effects of the Invention]

[0006] According to the cooking device of the present disclosure, heated or kept warm water can be supplied to the water supplier, so the temperature of the water supplied to the water supplier can be kept high, a decrease in the temperature of the heating chamber can be suppressed, and the food to be heated can be cooked quickly. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is a perspective view of a cooking device according to a first embodiment; [Figure 2] FIG. 1 is a perspective view of a cooking device according to a first embodiment; [Figure 3] 1 is a cross-sectional view of a heating cooker according to a first embodiment. [Figure 4] FIG. 1 is a perspective view of a hot air circulation frame according to the first embodiment; [Figure 5] FIG. 1 is a perspective view of a cooking device according to a first embodiment; [Figure 6] FIG. 1 is a perspective view of a cooking device according to a first embodiment; [Figure 7] FIG. 1 is a diagram showing a configuration of a control system of a cooking device according to a first embodiment. [Figure 8] Flowchart showing the operation of the cooking device [Figure 9] FIG. 10 is a perspective view of a cooking device according to a second embodiment; [Figure 10] FIG. 10 is a perspective view of a hot air circulation frame according to a second embodiment. [Figure 11] FIG. 11 is a perspective view showing a state in which a cover member of the cooking device according to the third embodiment is removed. [Figure 12] FIG. 10 is a perspective view showing a state in which a cover member of a main body of a cooking device according to a fourth embodiment is removed. DETAILED DESCRIPTION OF THE INVENTION

[0008] (Findings that formed the basis of this disclosure) At the time when the inventors came up with the idea of ​​the present disclosure, a technique was known in the technical field of cooking appliances in which high-temperature steam was used to heat an object to be heated housed in a heating chamber. In this type of cooking appliance, it is common to design the appliance so that a boiler for generating steam is provided for the purpose of generating steam. However, the inventors discovered that because the temperature of the water supplied to the water supply body is low compared to the temperature inside the heating chamber, there is a problem that the temperature inside the heating chamber drops when water is supplied to the water supply body, making it difficult to quickly cook the food to be heated.In order to solve this problem, they came up with the subject matter of the present disclosure. An object of the present disclosure is to provide a cooking device that reduces a temperature drop in a heating chamber when water is supplied to a water supplier, and quickly cooks an object to be heated.

[0009] Hereinafter, embodiments will be described in detail with reference to the drawings. However, unnecessary detailed description may be omitted. For example, detailed description of well-known matters or redundant description of substantially the same configuration may be omitted. This is to avoid unnecessary redundancy in the following description and to facilitate understanding by those skilled in the art. The accompanying drawings and the following description are provided to enable those skilled in the art to fully understand the present disclosure, and are not intended to limit the subject matter described in the claims.

[0010] (Embodiment 1) Hereinafter, the first embodiment will be described with reference to the drawings. [1-1.Configuration] [1-1-1. Overall structure] Fig. 1 is a perspective view of the cooking appliance 1 in the first embodiment. Fig. 2 is a perspective view of the cooking appliance 1 with the door 4 open. In the figure, X indicates the left direction, Y indicates the front direction, i.e., the front side, and Z indicates the upward direction. In this embodiment, the left side refers to the direction to the left of a person standing in front of the cooking appliance 1 and facing the cooking appliance 1.

[0011] Cooking appliance 1 is a device that heats food stored inside. Cooking appliance 1 of this embodiment is a commercial cooking appliance capable of high-power heating, and is used, for example, in cafes, convenience stores, fast food restaurants, etc. Cooking appliance 1 selectively performs microwave heating, radiant heating, and hot air circulation heating, either individually, sequentially, or in parallel, depending on the cooking contents.

[0012] As shown in Fig. 1, cooking appliance 1 includes main body 2, machine chamber 3 provided below main body 2 to support main body 2, and door 4 provided on the front of main body 2 in an openable and closable manner. Main body 2 also has cover member 2a that forms the outer surface of cooking appliance 1. In detail, cover member 2a forms both the left and right side surfaces and the top surface of cooking appliance 1. Door 4 can be rotated around hinges provided on the lower portions of both sides of door 4 by operating handles 24.

[0013] 2, the main body 2 has a heating chamber 5 that is a chamber for accommodating an object to be heated. The heating chamber 5 is disposed inside the cover member 2a via a heat insulating material.

[0014] Cooking appliance 1 heats an object to be heated in heating chamber 5 using microwaves or the like when door 4 is closed (see FIG. 1). When door 4 is open (see FIG. 2), an object to be heated can be put in and taken out of heating chamber 5.

[0015] An operation display unit 6 is also provided on the front surface of the main body 2. The operation display unit 6 has a display unit 6a that displays various information. In this embodiment, the display unit 6a includes any display device such as a liquid crystal panel or an organic EL panel. The operation display unit 6 is also provided with an input unit 6b that detects input operations by the user. The input unit 6b includes any input device such as a switch, button, dial, or touch sensor, and detects the user's input operations on the input device. The operation display unit 6 may also include a touch panel that displays information and accepts input operations as the display unit 6a and the input unit 6b. The operation display unit 6 detects any input by the user by combining the display by the display unit 6a and the input operation detected by the input unit 6b.

[0016] The heating chamber 5 of the main body 2 has a roughly rectangular parallelepiped space that is open at the front, and is sealed when the front opening is closed by the door 4, and contains an object to be heated and cooked. The bottom surface of the heating chamber 5 is made of a material that easily transmits microwaves, such as glass or ceramics. The left and right side surfaces, rear surface, and top surface of the heating chamber 5 are made of a metal, such as stainless steel or iron.

[0017] The heating chamber 5 is configured to accommodate a mounting table 7 on which an object to be heated is placed, and a tray 8 disposed below the mounting table 7 to catch grease and other drippings from the object to be heated. The mounting table 7 is removable and is, for example, a ceramic base, and is composed of a plate-like member on which the object to be heated can be placed. The tray 8 is also made of ceramic and is fixed to the bottom surface of the heating chamber 5. The ceramic is specifically cordierite (a ceramic made of magnesium oxide, aluminum oxide, and silicon oxide). Cordierite has low thermal expansion and excellent thermal shock resistance. Therefore, even if radio waves are concentrated on the surface of the mounting table 7, the mounting table 7 is unlikely to be damaged.

[0018] FIG. 3 is a cross-sectional view of the cooking device 1 according to the first embodiment, showing a cross section perpendicular to the left-right direction.

[0019] As shown in Figure 3, a grill heater 9 that performs radiant heating of the heated object is provided in the upper part of the interior of the heating chamber 5, i.e., on the top surface side. The grill heater 9, which is the heat source, is composed of a single sheathed heater and is arranged on the top surface side and has a curved shape (not shown). The grill heater 9 is driven and controlled in a grill mode (radiant heating operation) in which the heated object placed in the heating chamber 5 is cooked by radiant heat.

[0020] A microwave heating unit 21 is provided in the machine chamber 3 disposed below the heating chamber 5. The microwave heating unit 21 mainly includes a magnetron 15 serving as a microwave generator, an inverter 16 that drives the magnetron 15, and a cooling fan 17 that cools the components inside the machine chamber 3, all of which are controlled by a control unit 90 (described later). The microwave heating unit 21 also includes a waveguide 18 that guides the microwaves generated by the magnetron 15 toward the heating chamber 5, and a microwave supply unit 19 that radiates the microwaves guided by the waveguide 18 into the heating chamber 5. The microwave supply unit 19 is disposed at a position overlapping the center of the heating chamber 5 in a plan view, and is formed by an opening formed in the upper surface of the end of the waveguide 18. A stirrer 23 is provided above the microwave supply unit 19 to stir the microwaves radiated from the microwave supply unit 19. Stirrer 23 has blades that are rotationally driven by a stirrer drive unit (motor: not shown) provided in machine chamber 3 and stir the radiated microwaves. Therefore, in cooking device 1 of embodiment 1, microwaves stirred from below heating chamber 5 are radiated uniformly inside heating chamber 5.

[0021] [1-1-2. Configuration of hot air circulation mechanism] Cooking device 1 of embodiment 1 is provided with grill heater 9, which is a radiant heating unit as a cooking source, and microwave heating unit 21, as well as hot air generating mechanism 22. Hot air generating mechanism 22 flows high-temperature air into heating chamber 5 to heat the object to be heated.

[0022] The hot air generation mechanism 22 has a hot air circulation frame 28. The hot air circulation frame 28 is a hollow, approximately rectangular parallelepiped member. The front of the hot air circulation frame 28 is open, and the edge of the opening is fixed to the heating chamber 5 in a state where it contacts the back panel 5a, which forms the back surface of the heating chamber 5, from behind. This forms a hot air generation space 22a, which is an approximately rectangular parallelepiped space, between the hot air circulation frame 28 and the back panel 5a. The outer sides in the up-down direction, the outer sides in the left-right direction, and the rear side of the hot air circulation frame 28 are covered by a metal outer frame 29 with heat insulation interposed between them.

[0023] The hot air generating mechanism 22 has a convection heater 10. The convection heater 10 is configured by forming a single sheathed heater into a spiral shape. The convection heater 10 is disposed inside the hot air generating space 22a. In this embodiment, the convection heater 10 is provided along the back panel 5a. Also in this embodiment, a plate-shaped catalyst 26 is provided along the rear surface of the convection heater 10. The catalyst 26 purifies the air that it comes into contact with.

[0024] The hot air generating mechanism 22 has a circulation fan 11. The circulation fan 11 is a blower that circulates air between the heating chamber 5 and the convection heater 10. The circulation fan 11 has a fan drive unit 12 that is configured with an electric motor or the like. The circulation fan 11 rotates and operates when driven by the fan drive unit 12. In this embodiment, the circulation fan 11 is a centrifugal fan. Note that a blower other than a centrifugal fan, such as an axial fan, may also be used as the circulation fan 11.

[0025] The circulation fan 11 is disposed inside the hot air generating space 22a. Specifically, the circulation fan 11 is provided behind the convection heater 10 and catalyst 26. In this embodiment, the circulation fan 11 is a centrifugal fan that draws in air through the convection heater 10 and catalyst 26 in front of it and blows the drawn-in air outward in the centrifugal direction, i.e., up, down, left, and right directions. Also, in this embodiment, a first opening collection section 25a is formed in the rear panel 5a. The first opening collection section 25a includes multiple circular holes that penetrate the rear panel 5a from front to back, and connects the hot air generating space 22a and the heating chamber 5. The first opening collection section 25a is formed in a position that overlaps the convection heater 10 and the circulation fan 11 from front to back. Therefore, when the circulation fan 11 is activated, the air in the heating chamber 5 passes through the first opening collection section 25a, backward through the back panel 5a, and flows into the hot air generating space 22a, where it is heated by the convection heater 10, purified by the catalyst 26, and then sucked into the circulation fan 11.

[0026] The hot air generating mechanism 22 has an air guide frame 27. The air guide frame 27 is a member that guides the air drawn into and blown out of the circulation fan 11. The air guide frame 27 has a first air guide 27a. The first air guide 27a is a cylindrical portion that surrounds the convection heater 10 from above, below, left, and right. In this embodiment, the front end of the first air guide 27a contacts the portion of the back panel 5a that surrounds the first opening assembly portion 25a. The rear end of the first air guide 27a is connected to the front of the circulation fan 11, i.e., the intake side of the circulation fan 11. Therefore, when the circulation fan 11 is activated, air from the heating chamber 5 passes through the first opening assembly portion 25a, then passes through the inside of the first air guide 27a and is drawn into the circulation fan 11.

[0027] Furthermore, air blown out by the circulation fan 11 flows into the portion of the hot air generating space 22a that is outside the first air guide 27a. The air blown out through the circulation fan 11 into the hot air generating space 22a reaches the second opening collection part 25b formed in the back panel 5a. The second opening collection part 25b includes multiple circular holes that penetrate the back panel 5a from front to back, and connects the hot air generating space 22a to the heating chamber 5. The second opening collection part 25b is formed above the first opening collection part 25a and outside the first air guide 27a.

[0028] The air blown out of the hot air generating space 22a by the circulation fan 11 and reaching the second opening collector 25b flows back into the heating chamber 5 via the second opening collector 25b. More specifically, the air passing through the second opening collector 25b flows into the flow path 13a of the heating chamber 5. The flow path 13a is a space partitioned by the flow path forming portion 13 in the upper part of the heating chamber 5. The flow path forming portion 13 is a member that partitions the upper space in the heating chamber 5 from below, both left and right, and the front. Furthermore, the flow path 13a is partitioned from above by the top surface of the heating chamber 5, and from the rear by the back panel 5a of the area including the second opening collector 25b.

[0029] An opening 13d is formed in the flow path forming section 13. The opening 13d connects the inside and outside of the flow path 13a inside the heating chamber 5. Therefore, air drawn into the hot air generating space 22a from the heating chamber 5 by the operation of the circulation fan 11 is heated by the convection heater 10, then flows back into the heating chamber 5 via the flow path 13a, and circulates between the heating chamber 5 and the convection heater 10. More specifically, the opening 13d is a hole formed in the underside of the flow path forming section 13, and is located approximately in the center of the heating chamber 5 in a plan view. Therefore, the air that has flowed through the flow path 13a is blown downward through the opening 13d toward the center of the heating chamber 5. This configuration makes it easy for the air heated by the convection heater 10 to hit an object to be heated placed near the center of the heating chamber 5.

[0030] In this embodiment, a temperature sensor 50 is provided in the heating chamber 5. More specifically, the temperature sensor 50 is provided in the flow path 13a of the heating chamber 5. The temperature sensor 50 measures the temperature of the heating chamber 5. The temperature sensor 50 is, for example, a thermistor. In this embodiment, a pre-heating detection sensor 51 is provided in the flow path 13a. The pre-heating detection sensor 51 detects pre-heating, which is an operation of attempting to heat an object to be heated when the object is not placed in the heating chamber 5. The pre-heating detection sensor 51 is, for example, a temperature sensor such as a thermistor.

[0031] [1-1-3. Water supply unit configuration] 4 is a perspective view of the hot air circulation frame 28. The water supplier 40 supplies steam to the air circulating by the operation of the circulation fan 11. In this embodiment, the water supplier 40 is a member made of porous foam metal, and has minute voids therein that can hold water. Therefore, the water supplier 40 can hold fine water particles and easily supply fine water droplets.

[0032] 4, the water supplier 40 in this embodiment is disposed in the hot air generating space 22a. Specifically, the water supplier 40 is disposed in the lower left portion of the hot air generating space 22a and outside the first air guide 27a. That is, the water supplier 40 is disposed in a position where it is exposed to the flow of high-temperature air (i.e., hot air) circulated between the heating chamber 5 and the convection heater 10 by the circulation fan 11. In this embodiment, the water supply body 40 is described as being placed at the bottom left of the hot air generating space 22a, but the placement of the water supply body 40 is not limited to the bottom left of the hot air generating space 22a, and it may be placed anywhere within the hot air generating space 22a. The water supplier 40 generates steam from the water held in the gaps by the heat of the hot air blowing on the water supplier 40 or the heat of the water supplier 40 heated by the hot air, etc. The generated steam circulates between the heating chamber 5 and the convection heater 10 together with the air flowing due to the operation of the circulation fan 11.

[0033] In this embodiment, the water supplier 40 is formed in a rectangular plate shape. The water supplier 40 is disposed with its thickness direction facing up and down. The thickness direction here refers to the direction in which the width of the plate-shaped structure is narrowest. In this embodiment, a heater 43 for heating the water supplier 40 is provided in the hot air generating space 22a. The heater 43 is provided adjacent to and below the water supplier 40. The heater 43 is any heating device, such as a sheath heater or an electric heater.

[0034] In this embodiment, a temperature sensor 42 is provided in the hot air generating space 22a. The temperature sensor 42 is provided near the water supplier 40 and measures the temperature near the water supplier 40. The temperature near the water supplier 40 may be the temperature at a position a short distance away from the water supplier 40, or may be the temperature of the water supplier 40. Note that a short distance means, for example, a distance close enough to the water supplier 40 that the measurement value of the temperature sensor 42 can be converted into the temperature of the water supplier 40. A short distance means, for example, a distance of 1 cm or less. The temperature sensor 42 is, for example, a thermistor.

[0035] FIG. 5 is a perspective view of the cooking appliance 1, showing the left side of the cooking appliance 1 as seen from the rear. As shown in FIGS. 4 and 5, the water supplier 40 is held by a frame 41. The frame 41 is configured to slide so that it can be inserted into and removed from the cooking appliance 1 and the hot air generating space 22a from the left side of the cover member 2a. That is, the water supplier 40 is detachable from the cooking appliance 1. More specifically, openings 2b, 28a, and 29a into which the frame 41 can be inserted are formed on the left side of the cover member 2a, the left side of the hot air circulation frame 28, and the left side of the outer frame 29, respectively. The water supplier 40 is detachable from the cooking appliance 1 by inserting and removing the frame 41 from the openings 2b, 28a, and 29a to the left and right. This facilitates maintenance, such as cleaning, of the water supplier 40.

[0036] A grip portion 41a that protrudes leftward beyond the left side surface of the cover member 2a is provided on the left end of the frame body 41. By gripping the grip portion 41a, the frame body 41 can be easily inserted and removed. In this embodiment, the grip portion 41a has a shape that protrudes toward the left side beyond the left side surface of the cover member 2a, but the shape of the grip portion 41a is not limited to this and may, for example, be concave, and the frame body 41 may be inserted or removed by hooking a finger into the recess of the grip portion 41a.

[0037] In this embodiment, water supplier 40 is detachable from frame 41. Specifically, water supplier 40 is attached to frame 41 by fitting from above into a recess formed in frame 41. Furthermore, water supplier 40 fitted into the recess of frame 41 can be removed from frame 41 by pulling it upward. This facilitates maintenance such as cleaning of water supplier 40.

[0038] FIG. 6 is a perspective view of the cooking device 1, showing the cooking device 1 from the left side with the cover member 2a removed. As shown in FIGS. 5 and 6, a water tank 45 is provided above the heating chamber 5. The water tank 45 is a tank that stores water to be supplied to the water supplier 40. In this embodiment, the water tank 45 has a substantially rectangular parallelepiped shape with its longitudinal direction extending in the left-right direction. The water tank 45 is located above the water supplier 40.

[0039] In the present embodiment, water tank 45 is disposed so as to abut against the upper surface of heating chamber 5. The configuration in which water tank 45 abuts against heating chamber 2 constitutes water heating mechanism 60 of the present disclosure. The heating chamber 5 is formed of, for example, a metal material such as aluminum, a ceramic material, or a resin material, and is therefore configured so that the heat from the heating chamber 5 is transferred to the water tank 45, thereby enabling the water in the water tank 45 to be heated or kept warm.

[0040] The water tank 45 has a tank body 46 and a lid 49. The tank body 46 is a hollow, approximately rectangular parallelepiped part with an opening for pouring water on the top surface. The lid 49 is a flat member that closes the opening of the tank body 46. The tank body 46 and the lid 49 are made of a metal such as stainless steel, for example.

[0041] Water tank 45 is configured to be detachable from cooker 1. More specifically, water tank 45 is configured to be able to be inserted into and removed from cooker 1 in the left-right direction through opening 2c formed on the left side of cover member 2a. Furthermore, a grip portion 46a is provided at the left end of tank body 46, which protrudes leftward beyond cover member 2a when water tank 45 is inserted into cooker 1. This makes it easy to insert water tank 45 into and remove it from cooker 1.

[0042] As shown in FIG. 5, tank body 46 has connection port 46b. Connection port 46b is a portion that is connected to water supply path 47 when water tank 45 is inserted into cooking appliance 1. Water supply path 47 is a structure that allows water stored in water tank 45 to flow to water supplier 40. In this embodiment, connection port 46b is provided at the right end of tank body 46, and the right portion of the bottom of tank body 46 is shaped to be one step lower than the left portion. In other words, the bottom of tank body 46 is recessed downward near where connection port 46b is provided. This allows water in tank body 46 to easily flow to water supply path 47 via connection port 46b.

[0043] Furthermore, when the water tank 45 is inserted into the cooking appliance 1, as shown in FIG. 6 , the lower surface of the tank body 46 comes into contact with the heat transfer member 48 from above. The heat transfer member 48 is a plate-shaped member fixed to the upper surface of the heating chamber 5. Therefore, heat from the heating chamber 5 is transferred to the water tank 45 via the heat transfer member 48, facilitating heating of the water in the water tank 45. In this embodiment, the heat transfer member 48 is made of aluminum and has a high thermal conductivity. The heat transfer member 48 may be made of metals other than aluminum, resin, ceramic, or the like. However, by using a material for the heat transfer member 48 with a higher thermal conductivity than the material constituting the upper surface of the heating chamber 5 and the water tank 45, the heat from the heating chamber 5 can be efficiently transferred to the water tank 45, facilitating heating of the water in the water tank 45. Furthermore, if the heat transfer member 48 is made of a material with a higher thermal conductivity than air, the heat from the heating chamber 5 can be easily transferred to the water tank 45. Moreover, the heat transfer member may be attached to the water tank 45. Moreover, the water tank 45 may transfer the heat of the heating chamber 5 without the intervention of the heat transfer member .

[0044] As shown in Figures 4 and 6, the water supply path 47 has a water supply pipe 47a through which water from the water tank 45 flows. The water supply pipe 47a extends from the water tank 45, which is provided on the upper surface of the heating chamber 5, to the water supplier 40, which is disposed inside the hot air generating space 22a. In detail, the water supply pipe 47a extends from the water tank 45 along the outer surface of the heating chamber 5 and is routed inside the hot air generating space 22a through a hole formed in the hot air circulation frame 28. In addition, the downstream end of the water supply pipe 47a is located above and near the center of the water supplier 40, so that the water flowing through the water supply pipe 47a can easily reach the water supplier 40.

[0045] 6, a solenoid valve 47b is provided midway along water supply pipe 47a. Solenoid valve 47b is a valve that can be opened and closed by electronic control, and opens and closes water supply path 47 by switching between an open state and a closed state. That is, solenoid valve 47b shuts off the supply of water from water tank 45 to water supplier 40 when in the closed state.

[0046] [1-1-4. Control Unit Configuration] FIG. 7 is a diagram showing the configuration of a control system of the cooking appliance 1 according to the first embodiment. As shown in FIG. 7, the cooking appliance 1 has a control unit 90. The control unit 90 is a device that controls each part of the cooking appliance. The control unit 90 has a processor such as a CPU (Central Processing Unit) and an MPU (Micro-Processing Unit), and a storage medium such as a hard disk, a flash memory, and an optical disk. The control unit 90 controls each part of the cooking appliance 1 by having the processor load a program from the storage medium and execute the program. The control unit 90 may also have wired logic such as an ASIC (Application Specific Integrated Circuit) instead of a processor and a storage medium. The control unit 90 may also have a combination of a processor, a storage medium, and wired logic.

[0047] The control unit 90 also includes communication hardware that complies with wireless or wired communication standards, such as a connector, a communication circuit, etc. The control unit 90 communicates with each part of the cooking appliance 1 via this communication hardware.

[0048] The control unit 90 controls the on / off and heating intensity of each heating device, such as the grill heater 9, the convection heater 10, and the magnetron 15. The control unit 90 controls the on / off and rotation speed of each air blower, such as the circulation fan 11 and the cooling fan 17. The control unit 90 controls the opening and closing of the solenoid valve 47b. The control unit 90 controls the operation and display unit 6. Specifically, the control unit 90 controls the display unit 6a and displays information on the display unit 6a. The control unit 90 also receives detection signals corresponding to input operations detected by the input unit 6b. The control unit 90 receives temperature data near the heating chamber 5 and the water supplier 40 measured by the empty-heat detection sensor 51 and the temperature sensors 50 and 42.

[0049] The control unit 90 is also connected to the water volume sensor 45a. The water volume sensor 45a is a sensor that measures the amount of water in the water tank 45, i.e., the amount of water stored in the water tank 45. The control unit 90 receives data on the amount of water stored in the water tank 45 from the water volume sensor 45a. The water volume sensor 45a may be, for example, a float-type water level sensor or a capacitance-type water level sensor. Furthermore, since the water volume sensor 45a only needs to be able to measure the amount of water in the water tank 45, it may also be, for example, a weight sensor that measures the amount of water by weight rather than by water level.

[0050] [1-2. Operation] Next, the operation of the first embodiment will be described. FIG. 8 is a flowchart showing the operation of the cooking device 1 according to the first embodiment, and shows the operation of the cooking device 1 to heat an object to be heated, including steam convection. The operation of Fig. 8 is started when the control unit 90 detects that the user has made an input to the input unit 6b to start setting for heating the object to be heated. In the present embodiment, the heating chamber 5 is always preheated by the grill heater 9 or the convection heater 10 while the cooking appliance 1 is receiving power. Therefore, the heating chamber 5 is preheated at the start of the operation of Fig. 8. The set temperature for preheating the heating chamber 5 is, for example, 180°C or higher and 280°C or lower.

[0051] In step SA1, the control unit 90 uses the operation and display unit 6 to accept an input operation for specifying the type of the object to be heated. For example, the control unit 90 displays information on candidate types of the object to be heated on the display unit 6a, and then accepts an input operation for specifying the type of the object to be heated from the candidates displayed on the display unit 6a via the input unit 6b. The type of the object to be heated may correspond to a specific dish, such as a croissant or a sandwich. Furthermore, the type of the object to be heated may include multiple dishes, such as bread, simmered food, baked food, and fried food. In step SA1, when an input operation for specifying an object to be heated is received (step SA1: YES), the operation of the control unit 90 proceeds to step SA2. In step SA1, when an input operation for specifying an object to be heated is not received (step SA1: NO), the control unit 90 continues to receive an input operation for specifying an object to be heated.

[0052] In step SA2, the control unit 90 identifies the setting of the heating method corresponding to the type of object to be heated in the input received in step SA1. Specifically, the control unit 90 reads out the setting of the heating method for each type of object to be heated stored in the storage medium, which corresponds to the type of object to be heated in the input received in step SA1. For example, the storage medium of the control unit 90 stores, as heating method settings, the set temperature of the heating chamber 5 during heating and the output value of the grill heater 9, the convection heater 10, or the magnetron 15 for each type of object. The storage medium of the control unit 90 also stores, as heating method settings, the time from when heating of the object starts to when heating ends, i.e., the heating time th. The storage medium of the control unit 90 also stores, as heating method settings, the time from when the solenoid valve 47b is opened to when the solenoid valve 47b is closed, i.e., the water supply time tw. These heating method settings for each type of object may be stored in the storage medium in advance, or may be stored in the storage medium by a user inputting information into the operation and display unit 6. Alternatively, the heating method settings for each type of object may be stored in a server, and the user may load the heating method settings for each type of object from the server by inputting information into the operation and display unit 6.

[0053] Next, in step SA3, the control unit 90 determines whether or not an input operation to instruct the start of heating has been received via the display control unit 6. The input operation to instruct the start of heating is, for example, an action of pressing a button on the input unit 6b that corresponds to the start of heating. In step SA3, when an input operation to instruct the start of heating of an object to be heated that requires steam is received (step SA3: YES), the operation of the control unit 90 proceeds to step SA4. In step SA3, when an input operation to instruct the start of heating is not received (step SA3: NO), the control unit 90 continues to receive an input operation to instruct the start of heating.

[0054] Next, in step SA4, the control unit 90 determines whether the amount of water in the water tank 45 is equal to or greater than the minimum water amount. The minimum water amount is pre-stored in a storage medium of the control unit 90. The control unit 90 compares the measurement value of the water volume sensor 45a with the value of the minimum water amount read from the storage medium. The minimum water amount is set to, for example, an amount equal to or greater than the amount of water supplied from the water tank 45 to the water supplier 40 in one heating. Note that the minimum water amount may be a water level value when the water volume sensor 45a is a water level sensor, or a weight value when the water volume sensor 45a is a weight sensor. If the control unit 90 determines in step SA4 that the amount of water in the water tank 45 is equal to or greater than the minimum amount (step SA4: YES), the operation of the control unit 90 proceeds to step SA5. If the control unit 90 determines that the amount of water in the water tank 45 is less than the minimum amount (step SA4: NO), the control unit 90 ends the operation of Fig. 8 without heating the object to be heated in the heating chamber 5. Note that if the amount of water in the water tank 45 is less than the minimum amount (step SA4: NO), the control unit 90 may cause the display unit 6a to display a message urging the user to refill the water tank 45 with water.

[0055] In step SA5, the control unit 90 determines whether the temperature T0 in the vicinity of the water supplier 40 is equal to or higher than the water supply start temperature Ts. At this time, water heating mechanism 60 is provided, with water tank 45 abutting heating chamber 5, and with solenoid valve 47b closed, water in water tank 45 does not flow through water supply path 47, so the water in water tank 45 is heated by the heat of heating chamber 5. Therefore, water that has been heated or kept warm is supplied to water supplier 40. This makes it possible to maintain a high temperature of the water supplied to the water supplier 40, and to prevent the temperature of the heating chamber 5 from decreasing.

[0056] The control unit 90 acquires the temperature T0 near the water supplier 40, for example, by referring to the measurement value of the temperature sensor 42. The control unit 90 also reads the water supply start temperature Ts stored, for example, in a storage medium of the control unit 90. The water supply start temperature Ts may be the same regardless of the type of object to be heated, or may be a different value for each type of object to be heated and included in the heating method settings. The water supply start temperature Ts is, for example, 100°C. The water supply start temperature Ts corresponds to an example of the "first temperature" and "second temperature" in the present disclosure. Note that the cooking appliance 1 may repeatedly open and close the solenoid valve 47b to supply steam multiple times during one cooking of the object to be heated. In this case, the control unit 90 performs the determination of step SA6 each time the solenoid valve 47b is opened and closed for the first time and for each subsequent time. When the control unit 90 determines that the temperature T0 near the water supplier 40 is equal to or higher than the water supply start temperature Ts, the operation of the control unit 90 proceeds to step SA6. When the control unit 90 determines that the temperature T0 near the water supplier 40 is lower than the water supply start temperature Ts, the control unit 90 repeats the operation of step SA5.

[0057] In step SA6, the control unit 90 starts heating the object placed in the heating chamber 5 according to the heating method set in step SA2. At this time, the control unit 90 activates one or more of the grill heater 9, the convection heater 10, and the magnetron 15. The control unit 90 also activates the heater 43 to heat the water supplier 40.

[0058] In step SA7, the control unit 90 opens the solenoid valve 47b. This allows the water supply path 47 to communicate from the water tank 45 to the water supplier 40. In this embodiment, as described above, the water tank 45 is provided above the water supplier 40. Therefore, in step SA7, the control unit 90 simply opens the solenoid valve 47b to allow the water in the water tank 45 to be supplied to the water supplier 40.

[0059] In step SA8, the control unit 90 determines whether the elapsed time t1 since the solenoid valve 47b was opened in step SA5 is equal to or greater than the water supply time tw included in the heating method setting identified in step SA2. If the control unit 90 determines that the elapsed time t1 is equal to or greater than the water supply time tw (step SA8: YES), the operation of the control unit 90 proceeds to step SA9. If the control unit 90 determines that the elapsed time is not equal to or greater than the water supply time tw (step SA8: NO), the control unit 90 repeats the determination of step SA8.

[0060] In step SA9, the control unit 90 switches the solenoid valve 47b to the closed state, thereby stopping the supply of water from the water tank 45 to the water supplier 40. In this embodiment, as in steps SA8 and SA9, by opening the solenoid valve 47b only during the water supply time tw, an appropriate amount of water can be supplied to the water supplier 40.

[0061] In step SA10, the control unit 90 determines whether the elapsed time t2 since the start of heating in step SA4 is equal to or greater than the heating time th included in the setting of the heating method identified in step SA2. If the control unit 90 determines that the elapsed time t2 is equal to or greater than the heating time th (step SA10: YES), the operation of the control unit 90 proceeds to step SA11. If the control unit 90 determines that the elapsed time t2 is not equal to or greater than the heating time th (step SA10: NO), the control unit 90 repeats the determination of step SA10.

[0062] In step SA11, the control unit 90 ends heating of the object to be heated, returns to the state of preheating the heating chamber 5, and ends the operation in Fig. 8. At this time, the control unit 90 may control any audio output device, such as a buzzer or speaker, provided in the cooking appliance 1 to notify the user that heating has ended.

[0063] [1-3. Effects, etc.] As described above, the cooking appliance 1 in this embodiment includes the heating chamber 5 that accommodates an object to be heated, the circulation fan 11 that serves as an air source that draws in air from the heating chamber 5 and blows the drawn-in air into the heating chamber 5, thereby forming a circulation flow path in the internal space of the heating chamber 5, the convection heater 10 that heats the air drawn in by the circulation fan 11, the water supplier 40 that supplies water to the air heated by the convection heater 10, and the water tank 45 that supplies water to the water supplier 40. By arranging at least a portion of the water tank 45 so that it is in direct or indirect contact with the heating chamber 5, the cooking appliance 1 includes the water heating mechanism 60 that utilizes waste heat from the heating chamber 5 to heat or keep warm the water to be supplied to the water supplier 40. Thus, since water heating mechanism 60 is provided in which water tank 45 is in contact with heating chamber 5, the water in water tank 45 is heated by the heat of heating chamber 5, and water in a heated or kept warm state can be supplied to water supplier 40. Therefore, the temperature of the water supplied to water supplier 40 can be maintained high, a decrease in the temperature of heating chamber 5 can be suppressed, and the food to be heated can be cooked quickly.

[0064] (Embodiment 2) Next, a description will be given of a cooking device 1 according to a second embodiment of the present disclosure. In the following description, a description of matters similar to those in the first embodiment will be omitted.

[0065] [2-1.Configuration] Fig. 9 is a perspective view of the cooking appliance 1 in accordance with the second embodiment, as viewed from the rear side with the cover member 2a removed. Fig. 10 is a perspective view of the hot air circulation frame 28 in accordance with the second embodiment.

[0066] As shown in Figures 9 and 10, cooking appliance 1 has a connection part 145 instead of water tank 45. Connection part 145 is connected to an external water supply via a hose or the like (not shown). Connection part 145 is also connected to water supply path 47. That is, water from the external water supply can flow into water supply path 47 via connection part 145. In this embodiment, connection part 145 is provided on the rear side of main body 2. In the present embodiment, water supply path 47 is disposed so as to abut against the upper surface of heating chamber 5. The configuration in which water supply path 47 abuts against heating chamber 5 constitutes water heating mechanism 60 of the present disclosure.

[0067] 10, water supplier 40 in embodiment 2 is disposed with its thickness direction aligned with the front-rear direction, i.e., horizontally. Accordingly, frame 41 in embodiment 2 is formed with its thickness direction aligned with the front-rear direction, unlike in embodiment 1. Furthermore, heater 43 is not provided in embodiment 2, and water supplier 40 is heated by hot air circulating between heating chamber 5 and convection heater 10.

[0068] [2-2. Operation] Next, the operation of the second embodiment will be described. As in the first embodiment, the present embodiment also includes water heating mechanism 60 in which water supply path 47 is in contact with heating chamber 5, so that when solenoid valve 47b is closed, water sent to water supply path 47 is heated by the heat of heating chamber 5. Therefore, water that has been heated or kept warm is supplied to water supplier 40. This makes it possible to maintain a high temperature of the water supplied to the water supplier 40, and to prevent the temperature of the heating chamber 5 from decreasing.

[0069] [2-3. Effects, etc.] As described above, in the cooking device 1 in the second embodiment, the water heating mechanism 60 is configured such that the water supply path 47 connecting the water tank 45 and the water supplier 40 is disposed so as to be in contact with the heating chamber 5. With this, since the water heating mechanism 60 is provided with the water supply path 47 in contact with the heating chamber 5, the water in the water supply path 47 is heated by the heat of the heating chamber 5, and therefore it is possible to supply water in a heated or kept warm state to the water supplier 40. Therefore, it is possible to maintain a high temperature of the water supplied to the water supplier 40, suppress a drop in the temperature of the heating chamber 5, and quickly cook the food to be heated.

[0070] (Embodiment 3) Next, a description will be given of a cooking device 1 according to a third embodiment of the present disclosure. In the following description, descriptions of matters similar to those in the above-described embodiments will be omitted.

[0071] [3-1.Configuration] FIG. 11 is a perspective view of the cooking device 1 according to the third embodiment, showing a state in which the cover member 2a is removed.

[0072] 11, in this embodiment, a water heating pool 61 is installed on the water supply path 47 between the water tank 45 and the water supplier 40. The water heating pool 61 is arranged so as to be in contact with the upper surface of the heating chamber 5. The water heating pool 61 has a substantially cubic shape and is a container capable of storing a predetermined amount of water inside. As in the first embodiment, the water tank 45 is also disposed so as to abut on the upper surface of the heating chamber 5. That is, in this embodiment, the water heating pool 61 abutting against the heating chamber 5 and the water tank 45 constitute the water heating mechanism 60 of the present disclosure. When the water heating pool 61 is provided, the water tank 45 may not be in contact with the upper surface of the heating chamber 5, and the water heating mechanism 60 may be configured by the water heating pool 61 alone. The water heating pool 61 and the water tank 45 may be in direct contact with the upper surface of the heating chamber 5, or may be in contact with the heating chamber 5 via a material with high thermal conductivity. Furthermore, the shape of the water heating pool 61 is not limited to a substantially cubic shape, and may be any shape as long as it is in contact with the upper surface of the heating chamber 5 and allows heat transfer.

[0073] [3-2. Operation] Next, the operation of the third embodiment will be described. In this embodiment, the water heating mechanism 60 is provided, in which the water tank 45 and the water heating pool 61 are abutted against the heating chamber 5, so that when the solenoid valve 47b is closed, the water stored in the water tank 45 and the water heating pool 61 is heated by the heat of the heating chamber 5. Therefore, the water supplier 40 is supplied with water that has been heated or kept warm. This makes it possible to maintain a high temperature of the water supplied to the water supplier 40, and to prevent the temperature of the heating chamber 5 from decreasing. If at least the water stored in the water heating pool 61 is heated by the heat of the heating chamber 5, heated or kept warm water can be supplied to the water supplier 40.

[0074] [3-3. Effects, etc.] As described above, in the heating cooker 1 of embodiment 3, the water heating mechanism 60 includes a water heating pool 61 arranged on the water supply path 47 between the water tank 45 and the water supplier 40, and the water heating pool 61 is arranged so as to be in contact with the heating chamber 5. Thus, since the water heating mechanism 60 is provided with the water heating pool 61 in contact with the heating chamber 5, the water stored in the water heating pool 61 is heated by the heat of the heating chamber 5, and therefore heated or kept warm water can be supplied to the water supplier 40. Therefore, the temperature of the water supplied to the water supplier 40 can be maintained high, a decrease in the temperature of the heating chamber 5 can be suppressed, and the food to be heated can be cooked quickly.

[0075] (Fourth embodiment) Next, a description will be given of a cooking device 1 according to a fourth embodiment of the present disclosure. In the following description, descriptions of matters similar to those in the above-described embodiments will be omitted.

[0076] [4-1.Configuration] FIG. 12 is a perspective view of the cooking device 1 according to the fourth embodiment, showing a state in which the cover member 2a is removed. In this embodiment, as in the third embodiment, a water heating pool 61 is installed on the water supply path 47 between the water tank 45 and the water supplier 40. In this embodiment, the water heating pool 61 is disposed on an exhaust path 62 extending from the heating chamber 5 . The exhaust path 62 is a path that extends from the front to the rear of the heating chamber 5. The exhaust path 62 communicates with the upper front of the heating chamber 5 and also communicates with the rear surface of the main body 2, and is configured to discharge exhaust air generated in the heating chamber 5 to the rear of the main body 2.

[0077] [4-2. Operation] Next, the operation of the fourth embodiment will be described. In this embodiment, the water heating mechanism 60 is provided, in which the water heating pool 61 is in contact with the exhaust path 62, so that when the solenoid valve 47b is closed, the water stored in the water heating pool 61 is heated by the heat of the exhaust path 62. Therefore, the water supplier 40 is supplied with water that has been heated or kept warm. This makes it possible to maintain a high temperature of the water supplied to the water supplier 40, and to prevent the temperature of the heating chamber 5 from decreasing.

[0078] [4-3. Effects, etc.] As described above, in the heating cooker 1 of embodiment 4, the water heating mechanism 60 includes a water heating pool 61 arranged on the water supply path 47 between the water tank 45 and the water supplier 40, and the water heating pool is arranged on the exhaust path 62 from the heating chamber 5. Thus, since the water heating mechanism 60 is provided with the water heating pool 61 in contact with the exhaust path 62, the water stored in the water heating pool 61 is heated by the heat of the exhaust path 62, and it is possible to supply heated or warm-keeping water to the water supplier 40. Therefore, it is possible to maintain a high temperature of the water supplied to the water supplier 40, suppress a drop in the temperature of the heating chamber 5, and quickly cook the food to be heated.

[0079] (Other embodiments) As described above, Embodiments 1 to 5 have been described as examples of the technology disclosed in the present application. However, the technology in the present disclosure is not limited to these and can be applied to embodiments in which modifications, substitutions, additions, omissions, etc. are made. Furthermore, it is also possible to combine the components described in Embodiments 1 to 5 above to create new embodiments. Therefore, other embodiments will be exemplified below.

[0080] In the above embodiment, an example has been shown in which the water tank 45, the water heating pool 61, or the water supply path 47 is in contact with the heating chamber 5 or the exhaust path 62 as the water heating mechanism 60, but this is just one example. For example, the water tank 45, the water heating pool 61, and the water supply path 47 may all be in contact with the heating chamber 5 or the exhaust path 62. Also, a plurality of water heating pools 61 may be provided, and each water heating pool 61 may be in contact with the heating chamber 5 and the exhaust path 62, respectively. That is, any arrangement may be used as long as the water tank 45, the water heating pool 61, and the water supply path 47 can be heated or kept warm.

[0081] In the above embodiment, the water supplier 40 has been described as being plate-shaped, but this is merely an example. The water supplier 40 does not have to be plate-shaped. Furthermore, the thickness direction of the water supplier 40 may be inclined relative to the horizontal and vertical directions.

[0082] The step units of the operation shown in Figure 8 are divided according to the main processing content to make the operation easier to understand, and the operation is not limited by the way the processing units are divided or the names of the processing units. The operation may be divided into more step units depending on the processing content. Furthermore, one step unit may be divided so that it includes more processing. Furthermore, the order of the steps may be changed as appropriate within the scope that does not interfere with the purpose of this disclosure.

[0083] It should be noted that the above-described embodiments are intended to illustrate the technology of the present disclosure, and various modifications, substitutions, additions, omissions, etc. may be made within the scope of the claims or their equivalents.

[0084] (Addendum) The above description of the embodiments discloses the following techniques. (Technology 1) A cooking device comprising: a heating chamber that accommodates an object to be heated; a circulation fan that serves as an air source that draws in air from the heating chamber and blows the drawn-in air into the heating chamber, forming a circulation flow path in the internal space of the heating chamber; a convection heater that heats the air drawn in by the circulation fan; a water supplier that supplies water to the air heated by the convection heater; and a water tank that supplies water to the water supplier, and comprising a water heating mechanism that uses waste heat from the heating chamber to heat or keep warm the water that is supplied to the water supplier. According to this configuration, water heated or kept warm by the water heating mechanism can be supplied to the water supplier, so the temperature of the water supplied to the water supplier can be kept high, the temperature of the heating chamber can be prevented from decreasing, and the food to be heated can be cooked quickly.

[0085] (Technology 2) The cooking device according to Technology 1, wherein the water heating mechanism is configured by arranging at least a part of the water tank so as to be in direct or indirect contact with the heating chamber. With this configuration, the water heating mechanism, which places the water tank in contact with the heating chamber, heats the water in the water tank, allowing heated or kept-warm water to be supplied to the water supplier. This keeps the temperature of the water supplied to the water supplier high, prevents the temperature of the heating chamber from dropping, and allows the food to be cooked quickly.

[0086] (Technology 3) The cooking device according to Technology 1 or Technology 2, wherein the water heating mechanism is configured by arranging a water supply path connecting the water tank and the water supplier so as to be in contact with the heating chamber. According to this configuration, since the water supply passage is provided with a water heating mechanism in which the water supply passage is in contact with the heating chamber, the water in the water supply passage is heated by the heat of the heating chamber, and water in a heated or kept warm state can be supplied to the water supplier. As a result, the temperature of the water supplied to the water supplier can be maintained high, a decrease in the temperature of the heating chamber can be suppressed, and the food to be heated can be cooked quickly.

[0087] (Technology 4) The water heating mechanism includes a water heating pool arranged on the water supply path between the water tank and the water supplier, and the water heating pool is arranged so as to be in contact with the heating chamber, the heating cooker described in any one of Technology 1 to Technology 3. According to this configuration, since the water heating mechanism has a water heating pool abutted against the heating chamber, the water stored in the water heating pool is heated by the heat of the heating chamber, and heated or kept warm water can be supplied to the water supplier. As a result, the temperature of the water supplied to the water supplier can be maintained high, a drop in the temperature of the heating chamber can be suppressed, and the food to be heated can be cooked quickly.

[0088] (Technology 5) A heating cooker according to any one of Technology 1 to Technology 4, wherein the water heating mechanism includes a water heating pool arranged on the water supply path between the water tank and the water supplier, and the water heating pool is arranged on an exhaust path from the heating chamber. With this configuration, the water heating mechanism has a water heating pool abutted against the exhaust path, so the water stored in the water heating pool is heated by the heat of the exhaust path, making it possible to supply heated or kept warm water to the water supplier. As a result, the temperature of the water supplied to the water supplier can be maintained high, preventing a drop in the temperature of the heating chamber and allowing the food to be cooked quickly. [Industrial Applicability]

[0089] The present disclosure is suitable for use in cooking appliances that allow easy maintenance of the water supplier, and is particularly applicable to convection ovens and the like. [Explanation of symbols]

[0090] 1 Cooker 2 Main unit 2a Cover member 2b opening 2c aperture 3 Machine room 4 doors 5 Heating chamber 5a Back plate 6 Operation display section 6a Display section 6b Input section 6 Display control section 7 Mounting table 9 Grill heater 10 Convection heater 11 Circulation fan 12 Fan drive unit 13a Flow path 13 Flow path forming section 13d opening 15 Magnetron 16 inverters 17 Cooling fan 18 Waveguide 19 Microwave supply unit 21 Microwave heating section 22 Hot air generation mechanism 22a Hot air generation space 23 Starla 24 Handle 25a 1st opening gathering part 25b 2nd opening gathering part 26 Catalyst 27 Air guide frame 27a No. 1 Air Guide 28 Hot air circulation frame 28a,28b opening 29 Outer Frame 40 Water supply body 41 Frame 41a Gripping part 41b Frame body part 41c Supply body support part 42 Temperature Sensor 43 Heater 45 Water Tank 45a Water level sensor 46 Tank body 46a Gripping part 46b Connection port 47 Water supply route 47a Water supply pipe 47b Solenoid valve 48 Heat transfer material 49 Lid 50 Temperature Sensor 51 Detection sensor 52 Detection Device 60 Water heating mechanism 61 Water heating pool 62 Exhaust route 90 Control Unit 145 Connection

Claims

1. a heating chamber that accommodates an object to be heated; a circulation fan that serves as an air source that draws in air from the heating chamber, blows the drawn-in air into the heating chamber, and forms a circulation flow path in the internal space of the heating chamber; A convection heater that heats the air drawn in by the circulation fan; a water supplier that supplies water to the air heated by the convection heater; a water tank for supplying water to the water supplier; A water heating mechanism is provided that utilizes waste heat from the heating chamber to heat or keep warm the water to be supplied to the water supplier. Heating cooker.

2. The water heating mechanism is configured such that at least a portion of the water tank is in direct or indirect contact with the heating chamber. The cooking device according to claim 1 .

3. The water heating mechanism is configured such that a water supply path connecting the water tank and the water supplier is disposed so as to be in contact with the heating chamber. The cooking device according to claim 1 .

4. the water heating mechanism includes a water heating pool disposed on a water supply path connecting the water tank and the water supplier; The water heating pool is arranged to be in contact with the heating chamber. The cooking device according to claim 1 .

5. the water heating mechanism includes a water heating pool disposed on a water supply path connecting the water tank and the water supplier; The water heating pool is disposed on an exhaust path from the heating chamber. The cooking device according to claim 1 .

Images