CN113842059A

CN113842059A - Cooking utensil

Info

Publication number: CN113842059A
Application number: CN202011326539.8A
Authority: CN
Inventors: 朱泽春; 周建东; 宁文斯; 张硕
Original assignee: Hangzhou Joyoung Household Electrical Appliances Co Ltd
Current assignee: Hangzhou Joyoung Household Electrical Appliances Co Ltd
Priority date: 2020-11-24
Filing date: 2020-11-24
Publication date: 2021-12-28
Anticipated expiration: 2040-11-24
Also published as: CN113842059B

Abstract

The invention discloses a cooking utensil which comprises a pot body, an inner container and a pot cover, wherein the pot body comprises a heat-insulating cover, the inner container can be placed in the heat-insulating cover in a picking and placing mode, the pot cover is provided with a light-emitting unit, the light-emitting unit can emit light into the heat-insulating cover, the heat-insulating cover is provided with a light-transmitting hole, the light-transmitting hole is shielded when the inner container is placed in the heat-insulating cover, the light-transmitting hole is not shielded when the inner container is not placed in the heat-insulating cover, a photosensitive sensor positioned on the outer side of the heat-insulating cover is further arranged in the pot body, and the photosensitive sensor can receive light emitted from the light-transmitting hole. Whether the inner container is arranged in the heat preservation cover or not is detected through the mode, and the safety of the cooking appliance is enhanced.

Description

Cooking utensil

Technical Field

The invention belongs to the technical field of kitchen appliances, and particularly relates to a cooking appliance.

Background

With the improvement of the standard of living, various cooking appliances (such as pressure cookers, air fryers, air-frying pressure integrated cookers and the like) are more and more commonly used in daily life.

An air fryer is a cooking device commonly used by people, and most of the existing air fryers comprise a cooker cover, a cooker body, an inner container and a heating component for air frying function. When the air-frying function is performed, the heating assembly blows hot air into the inner container, and the hot air circulates in the inner container to air-fry the food. If the user forgets to put the inner container, hot air circulates in the pot body, so that the temperature of the bottom is raised.

Among the prior art, mostly do not detect to having or not detect in the pot body the inner bag, when the pot body is interior not to place the inner bag and just carry out the air-fried function, can lead to hot-blast penetrating gap entering machine base in, influence the normal operating of machine. In addition, when the inner container is not arranged in the pot body, hot air can be continuously blown into the pot body due to no protection measures, the temperature can not be reduced for protection, and finally irreversible damage is caused to elements arranged on the base.

Moreover, with the development of technology and the demand of users, more and more users are pursuing the visualization of the cooking process, and how to detect the existence of the inner container of the visualized cooking appliance becomes a technical problem to be solved in the field.

Disclosure of Invention

The present invention provides a visible lid assembly to solve at least one of the above technical problems.

The technical scheme adopted by the invention is as follows:

the utility model provides a cooking utensil, includes the pot body, inner bag and pot cover, the pot body is including keeping warm the cover, the inner bag can be got to put and place in keep warm the cover, the pot cover is provided with luminescence unit, luminescence unit can to emitting light in the heat preservation cover, the heat preservation cover is provided with the light trap, the inner bag is arranged in when keeping warm in the cover, the light trap is sheltered from, the inner bag is not arranged in when keeping warm in the cover, the light trap is relieved and is sheltered from, still be provided with in the pot body and be located the photosensitive sensor in the heat preservation cover outside, photosensitive sensor can receive certainly the light that the light trap sent.

The cooking appliance of the invention also has the following additional technical features:

the pot body is also internally provided with a control unit which is electrically connected with the photosensitive sensor and controls the operation of the first heating unit according to the signal of the photosensitive sensor;

the light-emitting unit is a first heating unit, the first heating unit comprises an optical radiation heating tube, the optical radiation heating tube comprises a light-transmitting part and a heating wire capable of emitting light, the heating wire is arranged in the light-transmitting part and can be lightened at a preset time node, and when the optical radiation heating tube is in a heating state, the optical radiation heating tube lightens the space in the inner container or the space in the heat-insulating cover; alternatively, the first and second electrodes may be,

the cooker cover is provided with a first heating unit, the light-emitting unit comprises a light-emitting piece, and the light-emitting piece can be lightened to illuminate the space in the inner container or the space in the heat-insulating cover when the preset time node is reached.

When the preset time node is that the pot cover and the pot body are covered, the light-emitting unit is controlled to emit light when a covering signal of the pot cover and the pot body is detected; alternatively, the first and second electrodes may be,

the preset time node is used for controlling the light-emitting unit to emit light when a starting signal is detected after the pot cover and the pot body are covered and before the light-emitting unit is started.

The pot cover is further provided with a fan, the fan is located above the first heating unit, the fan and the first heating unit are started at the preset time node, and when the light intensity detected by the photosensitive sensor in the preset time exceeds a preset threshold value, the first heating unit and/or the fan stops running.

A second heating unit for pressure cooking is arranged in the heat-preservation cover, and the second heating unit can support the inner container;

the light hole set up in the lateral wall of heat preservation cover, just the light hole with second heating unit is in horizontal direction dislocation arrangement.

The light holes are opposite to the photosensitive sensor, so that the photosensitive sensor receives direct light at the light holes.

The pot body is internally provided with a light reflecting piece, the light reflecting piece is positioned in the range of the irradiation area emitted by the light transmitting hole, and the photosensitive sensor receives light reflected by the light reflecting piece.

The pot cover is provided with an upper coupler, the pot body is provided with a lower coupler, the pot cover covers the pot body, the upper coupler is in plug-in coupling with the lower coupler, the lower coupler is electrically connected with the control unit, and the photosensitive sensor, the lower coupler and the control unit are located on the same side of the heat preservation cover.

The pot cover is further provided with a visual window, the visual window comprises an outer visual window and an inner visual window positioned in the pot cover, and a visual cavity is formed between the outer visual window and the inner visual window.

The heat preservation cover has lateral wall, diapire and transition portion, the light trap is close to the setting of transition portion.

The cooking utensil further comprises a movable blocking piece capable of blocking the light transmission hole.

Due to the adoption of the technical scheme, the invention has the beneficial effects that:

1. according to the cooking utensil, the light-emitting unit serves as a light source end and projects light into the heat-insulating cover, when the inner container is not placed in the heat-insulating cover, the light can be projected to the outer side of the heat-insulating cover through the light-transmitting hole of the heat-insulating cover, and at the moment, the photosensitive sensor can directly or indirectly sense the light and generate response, so that the cooking utensil is proved to be in a state that the inner container is not placed in place; when the inner bag was arranged in the heat preservation cover, inner bag or separation blade sheltered from the light trap, and light propagation path cuts, and photosensitive sensor that lies in outside the heat preservation cover this moment can not receive the light source and can't respond, proves that cooking utensil is in the inner bag and places the state in place. The cooking utensil detects whether light is emitted in a dark place at the light-transmitting hole through the photosensitive sensor, and can execute corresponding normal cooking or protection operation according to a detection result, for example, if the inner container is not placed in the pot body, the cooking utensil can perform cooling protection to protect a circuit board structure and the like in the pot body, or send an alarm prompt to a user, and terminate the cooking operation, so that the pot body is protected, and the service life of the cooking utensil is prolonged.

2. As a preferred embodiment of the present invention, a control unit is further disposed in the pan body, and the control unit is electrically connected to the light sensor and controls the operation of the first heating unit according to a signal of the light sensor. The luminous unit is first heating unit, first heating unit includes the light radiation heating tube, the light radiation heating tube includes printing opacity portion and the heater that can give out light, the heater sets up in the printing opacity portion and can light when the predetermined time node, when the light radiation heating tube is in the heating state, the light radiation heating tube illuminates space in the inner bag or space in the heat preservation cover. Light radiation heating tube one multi-purpose, has included heating function and light-emitting function, has saved space and cost, and through setting up the light radiation heating tube, the heater can give out light fast and generate heat to radiate away through the printing opacity portion, in order in time to light at the scheduled time node, make photosensitive sensor can receive light signal in the short time, realize the detection of inner bag, improve user experience. In some embodiments, the light emitting member may be arranged to illuminate the space in the inner container or the space in the heat insulation cover at a predetermined time node. When the preset time node is that the pot cover and the pot body are covered, when the cover and the pot body covering signal is detected, the light-emitting unit is controlled to emit light, and at the moment, a user can be timely informed that the inner container is placed or not, so that the user can place the inner container in time; the preset time node can also be used for controlling the light-emitting unit to emit light according to a starting signal of a user after the pot cover and the pot body cover are closed and before the light-emitting unit is started, so that the problem that the inner container is detected and is warned when the user does not start a cooking function can be avoided, the habit of the user is better met, and the user experience is improved.

3. As a preferred embodiment of the present invention, the pot cover is further provided with a fan, the fan is located above the heating unit, the fan and the first heating unit are started at the predetermined time node, and when the light intensity detected by the light sensor within the predetermined time exceeds a preset threshold, the first heating unit and/or the fan stops operating. . The fan and the first heating unit are started at the preset time node, the pot cover can be guaranteed to be capable of dissipating heat and cooling in time when the first heating unit works, dry burning deformation of parts is avoided, when the cooking utensil is in a state that the inner container is not placed in place, the photosensitive sensor detects that light intensity exceeds a preset threshold value, a signal is output to the control unit, the control unit controls the first heating unit and the fan to stop running along with the light intensity, in some embodiments, the fan on the upper side of the first heating unit still runs, so that heat dissipation is conducted on the pot body, and safety of the cooking utensil is protected.

4. As a preferred embodiment of the present invention, a second heating unit for pressure cooking is provided in the heat-insulating cover, and the second heating unit can support the inner container; the light hole set up in the lateral wall of heat preservation cover, just the light hole with second heating unit is in horizontal direction dislocation arrangement. The multi-functional culinary art mode of pressure cooking and air-fry culinary art has been realized to the first heating element of second heating element cooperation, designs into horizontal dislocation with the arrangement position of light trap and second heating element and arranges to make things convenient for light to jet out from the light trap, avoid the second heating element to form to shelter from the light trap, promote the sensitivity that detects.

Further, the light-transmitting hole is opposite to the photosensitive sensor, so that the photosensitive sensor receives direct light at the light-transmitting hole. The photosensitive sensor can receive the light passing through the light hole by the shortest path of light propagation so as to facilitate the collection of the light.

Furthermore, a light reflecting part is arranged in the pot body, the light reflecting part is positioned in the range of the irradiation area emitted by the light hole, and the photosensitive sensor receives light reflected by the light reflecting part. The photosensitive sensor can indirectly receive the light passing through the light hole through reflection of the light reflecting piece, the installation position of the photosensitive sensor can not face the light hole, and a heat dissipation space exists between heat and the photosensitive sensor which penetrates through the light hole to diffuse to the outside of the heat preservation cover during cooking, so that the service life of the photosensitive sensor is prolonged.

5. As a preferred embodiment of the present invention, the pot cover is provided with an upper coupler, the pot body is provided with a lower coupler, the upper coupler is inserted and coupled with the lower coupler in a state where the pot cover covers the pot body, the lower coupler is electrically connected with the control unit, and the photosensitive sensor, the lower coupler and the control unit are located on the same side of the heat-insulating cover. The pot cover can be separated from the pot body, the pot cover and the pot body are coupled through the upper coupler and the lower coupler in a plugging mode to achieve power supply and signal transmission, the photosensitive sensor, the lower coupler and the control unit are arranged on the same side of the heat preservation cover, the line arrangement inside the pot body is facilitated, the setting position of the control unit is limited, the design of a heat dissipation channel at the bottom of the pot body is facilitated, and the heat dissipation of the pot body is facilitated.

6. As a preferred embodiment of the present invention, the pot cover is further provided with a visible window, the visible window includes an outer visible window and an inner visible window located in the pot cover, and a visible cavity is formed between the outer visible window and the inner visible window. The visual culinary art of cooking utensil has been realized, and the user can see through the culinary art state of eating the material in the visual chamber observation pot body culinary art cavity to, cooperation luminescence unit, the visual experience of reinforcing. As a preferred embodiment of the present invention, the cooking appliance further includes a movable blocking piece capable of blocking the light transmission hole, the light transmission hole is blocked by the blocking piece when the inner container is placed in the heat insulation cover, and the blocking piece is located at a position where the light transmission hole is not blocked when the inner container is not placed in the heat insulation cover. Under the culinary art state that has the cooking utensil of visual window, and when the inner bag was arranged in when keeping warm in the cover, the setting of separation blade can avoid certainly the inner bag with keep warm the natural light that the fit clearance of cover jetted into jets into through the light trap and by photosensitive sensor gathers to promote the accuracy that detects, reduced detection error by a wide margin.

7. Further, the heat preservation cover has lateral wall, diapire and transition portion, the light trap is close to the setting of transition portion. The difficult natural light that jets into in the heat preservation cover from visual window of receiving of transition portion, and the intervention of natural light probably leads to the inner bag to place when the heat preservation covers, and light is by the deep light trap department of the fit-up gap between inner bag and heat preservation cover, thereby photosensitive sensor's the detection accuracy receives the influence, with the setting of light trap in transition portion, can avoid external natural light to have the detection precision that no light jetted out to photosensitive sensor sensing light trap department to produce the influence.

Drawings

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

FIG. 1 is a schematic structural view of the pot body according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of the cooking utensil in an embodiment of the present invention, showing the inner container disposed in the heat-retaining cover;

FIG. 3 is an enlarged view of a portion of area A of the embodiment of FIG. 2;

FIG. 4 is a cross-sectional view of the cooking utensil in an embodiment of the present invention, showing the inner container not being disposed on the heat-retaining cover;

FIG. 5 is an enlarged view of a portion of the embodiment of FIG. 4 in the area B;

FIG. 6 is a sectional view of the cooking utensil according to another embodiment of the present invention, showing the inner container not being disposed on the heat-retaining cover;

FIG. 7 is an enlarged view of a portion of the embodiment of FIG. 6 in area C;

FIG. 8 is a sectional view of the cooking utensil according to another embodiment of the present invention, showing the inner container disposed in the heat-retaining cover;

fig. 9 is a partially enlarged view of region D in the embodiment of fig. 8.

Wherein the content of the first and second substances,

1-a pot body, 11-a heat preservation cover, 111-a light transmission hole, 112-a blocking sheet, 113-a transition part, 12-a photosensitive sensor, 13-a control unit, 14-a second heating unit and 15-a lower coupler;

2-inner container;

3-pot cover, 31-light radiation heating tube, 32-fan, 33-upper coupler, 34-visual window, 341-external window, 342-internal window and 343-visual cavity.

Detailed Description

In order to more clearly explain the overall concept of the present application, the following detailed description is given by way of example in conjunction with the accompanying drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

In addition, in the description of the present invention, it is to be understood that the terms "inside", "outside", "upper", "lower", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

As shown in fig. 1 to 5, a cooking appliance comprises a pot body 1, an inner container 2 and a pot cover 3, wherein the pot body 1 comprises a heat preservation cover 11, and the inner container 2 can be placed in the heat preservation cover 11 in a picking and placing manner. The cooking appliance has a normal cooking state in which the inner container 2 is put in place and an abnormal cooking state in which the inner container 2 is not put in place; under a normal cooking state, the inner container 2 is placed in the heat-insulating cover 11, the heating unit heats food materials in a cooking cavity formed by the inner container 2, the inner container 2 plays a certain role in isolating heat in the cooking cavity, and the heat is reduced from diffusing to the heat-insulating cover 11 or other parts of the pot body 1; in the abnormal cooking state, the inner container 2 is not placed on the heat-insulating cover 11, the heating unit directly heats the heat-insulating cover 11, and heat can be diffused to the whole part of the pot body 1 through the gap of the pot body 1, so that the temperature rise and the like in the pot body 1 are caused.

In order to solve the above problems, the present invention provides a cooking appliance, wherein a heat insulation cover 11 is provided with a light transmission hole 111, a photosensitive sensor 12 capable of detecting light is further arranged in a pot body 1, the photosensitive sensor 12 is arranged in an area outside the heat insulation cover 11, and the photosensitive sensor 12 can directly or indirectly receive light emitted from the light transmission hole 111, so as to realize a function of detecting whether an inner container 2 is arranged in the heat insulation cover 11. With reference to fig. 4 and 5, when the inner container 2 is not placed in the heat-insulating cover 11, light can be projected to the outside of the heat-insulating cover 11 through the light-transmitting hole 111 of the heat-insulating cover 11, and at this time, the light-sensitive sensor 12 can directly or indirectly sense the light and generate a response, so as to prove that the cooking appliance is in a state where the inner container 2 is not placed in place; when the inner container 2 is arranged in the heat preservation cover 11, the inner container 2 or the blocking piece shields the light transmission hole 111 to cut off the propagation path of the light source, at the moment, the photosensitive sensor 12 positioned outside the heat preservation cover 11 cannot receive the light source and cannot respond, and the cooking appliance is proved to be in a state that the inner container 2 is put in place.

Since the light sources are different according to the structural design and the use state of the cooking appliance, theoretically, there are various sources of light that can be transmitted through the light-transmitting hole 111.

For example, the pot cover 3 in this embodiment is provided with a light emitting unit, the light emitting unit can emit light into the heat insulation cover 11, and the light can be emitted through the light hole 111. The light-emitting unit is used as a light source, the emitted light can relate to a cooking chamber formed inside the heat-insulating cover 11, and the light can be emitted from the light-transmitting hole 111 when the inner container 2 is not placed in the heat-insulating cover 11, so that the photosensitive sensor 12 receives the light and generates an electric signal for changing the working state of the cooking utensil, and the use safety of the cooker is ensured.

It should be noted that the present invention is not limited to the above-mentioned type of the light emitting unit of the pot cover 3, and any one of the following embodiments can be adopted:

example 1: in this embodiment, as shown in fig. 2, the light emitting unit is a first heating unit, the first heating unit includes an optical radiation heating pipe, the optical radiation heating pipe includes a light-transmitting portion and a heating wire capable of emitting light, the heating wire is disposed in the light-transmitting portion and can be lit at a predetermined time node, the optical radiation heating pipe 31 generates heat through optical radiation to heat the cooking chamber, and simultaneously, the optical radiation heating pipe 31 can illuminate the space of the inner container 2 or the space of the heat-insulating cover 11 as the light emitting unit after being electrically connected, so that one of multiple purposes of the optical radiation heating pipe 31 is realized, the heating function and the light-emitting function are included, the space and the cost are saved, the heating wire can emit light and heat rapidly through the light-transmitting portion, so as to be lit at the predetermined time node, so that the photosensitive sensor can receive optical signals in a short time, and realize the detection of the inner container, the user experience is improved. As a preferred example under the present embodiment, the light radiation heating tube 31 is a halogen tube. In this embodiment, the light radiation heating pipe cooperates the light trap 111 on the heat preservation cover 11 and the photosensor 12 outside the heat preservation cover 11, realizes the detection whether to place the inner bag 2 in place, has strengthened cooking utensil's security.

Normal ordinary heating pipe, enough and the time of power is long enough, also can be burnt red, but the required time overlength can't satisfy the demand that the inner bag detected, through the light radiation heating tube for first heating element can give out light in the scheduled time, generally for a few seconds, under the actual measurement condition, can reach photosensitive sensor's response value in 2-3 seconds, is far away in the time of ordinary heating tube.

Example 2: in this embodiment, the lid 3 is provided with a first heating unit, the first heating unit is a common heating pipe (such as a stainless steel electric heating pipe, a quartz electric heating pipe, a carbon fiber heating pipe, etc.), the first heating pipe generates heat to heat the cooking chamber after being electrified, and the light-emitting unit includes a light-emitting member capable of illuminating the space in the inner container 2 or the space in the heat-insulating cover 11. Since the light emitting member can realize self-light emission without being attached to the first heating unit, the arrangement position thereof is not limited by the arrangement position of the first heating unit, so that the light emitting member can be selectively arranged at any position which is favorable for improving the light sensing accuracy. The luminous piece is also lightened to illuminate the space in the inner container or the space in the heat-preservation cover when the preset time node is reached.

In the predetermined time node, any one of the following embodiments may be adopted:

example 1: when the preset time node is that the pot cover is covered with the pot body, the light-emitting unit is controlled to emit light when a covering signal of the pot cover and the pot body is detected;

at the moment, the user can be timely informed of whether the inner container is placed or not, so that the user can place the inner container in time.

Example 2: the preset time node is that after the cover is covered with the pot body and before the light-emitting unit is started, when a starting signal is detected, the light-emitting unit is controlled to emit light.

At this moment, the problem that the user sends out a warning and the like by detecting the inner container when the cooking function is not started can be avoided, user habits are better met, and user experience is improved.

For another example, besides the light emitting unit, the lid 3 is provided with a viewing window 34 as described below, so that a user can observe the cooking state of the food in the cooking chamber of the cooking appliance through the viewing window 34 to realize visual experience. In such a structural shape, when the inner container 2 is not placed, the light emitted by the light emitting unit can be emitted through the light hole 111, and when the inner container 2 is placed in the heat-insulating cover 11, external natural light still has a possibility of being emitted from the light hole 111 through a fit gap between the inner container 2 and the heat-insulating cover 11. Therefore, in the structural configuration of this embodiment, the light that can be emitted from the light-transmitting hole 111 has two sources — the light-emitting unit and the external natural light that is emitted from the viewing window.

According to the invention, the light emitted from the light hole is detected by the photosensitive sensor so as to detect whether the inner container is placed in the heat preservation cover or not, so that the cooking appliance can perform corresponding normal cooking or protection operation according to the detection result, and the safety of the cooking appliance is improved.

The mode of the present invention in which the light-transmitting hole is blocked is not particularly limited, and any one of the following embodiments may be employed:

the first implementation mode comprises the following steps: in this embodiment, as shown in fig. 2 and 3, when the inner container 2 is placed in the heat-insulating cover 11, the height of the bottom end surface of the inner container 2 in the heat-insulating cover 11 is lower than the height of the bottom end surface of the light-transmitting hole 111 in the heat-insulating cover 11, and the inner container 2 can directly shield the light-transmitting hole 111, so that the light propagation path is cut off directly by the inner container 2 shielding the light-transmitting hole 111.

It should be noted that, the height of the bottom end surface of the inner container 2 and the position of the light-transmitting hole 111 are not specifically limited, and the inner container may be arranged according to the embodiments shown in fig. 2 and fig. 3, in other embodiments, according to the sizes of the inner container 2 and the heat-insulating cover 11, when the inner container 2 is placed in the heat-insulating cover 11, the height of the bottom end surface of the inner container 2 in the heat-insulating cover 11 may also be horizontal or higher than the height of the top end surface of the light-transmitting hole 111 in the heat-insulating cover 11, and also when the inner container 2 is placed in the heat-insulating cover 11, the inner container 2 can directly block the light propagation path at the light-transmitting hole 111. Both of the above embodiments fall within the scope of the present invention.

The second embodiment: in this embodiment, the heat insulating cover 11 is provided with a movable stopper 112 capable of blocking the light transmitting hole 111. As shown in fig. 6 and 7, when the inner container 2 is not placed in the heat-insulating cover 11, the upper end of the blocking piece 112 is higher than the upper edge of the heat-insulating cover 11, and the lower end of the blocking piece 112 is higher than the fixed end face of the light-transmitting hole 111, at this time, light can be emitted through the light-transmitting hole 111 and received by the photosensor 12; as shown in fig. 8 and 9, when the liner 2 is placed in the heat-insulating cover 11, the blocking piece 112 moves downward, so that the lower end of the blocking piece 112 moves to the bottom end surface of the light-transmitting hole 111, so as to shield the light-transmitting hole 111 by the blocking piece 112, the light propagation path at the light-transmitting hole 111 is cut off, and the photosensor 12 cannot receive light without responding, thereby proving that the liner 2 is placed in the heat-insulating cover 11. In this embodiment, when the inner container 2 is disposed in the heat-insulating cover 11, the blocking piece 112 moves to a position capable of blocking the light-transmitting hole 111, so that the light propagation path is blocked, light is prevented from being transmitted, the detection accuracy is improved, and misoperation is avoided. When the inner container 2 is not placed in the heat insulation cover 11, the light transmission hole 111 is not shielded by the inner container 2 and the blocking piece 112, and light emitted by the light emitting unit can be emitted through the light transmission hole 111 and collected by the photosensitive sensor.

For the movement and the triggering mode of the blocking piece 112, the heat preservation cover 11 is provided with an elastic piece for driving the blocking piece 112 to reset, when the liner 2 is placed in the heat preservation cover, the blocking piece 112 can be pressed down to the position for shielding the light transmission hole 111 by the liner 2, and when the liner 2 is taken down from the heat preservation cover 11, the elastic piece resets, so that light can pass through the light transmission hole 111. The purely mechanical driving structure can reduce the arrangement of control elements and the like, reduce the cost and the power consumption and contribute to the miniaturization of the whole machine.

As a preferred embodiment of the present invention, a fan 32 for dissipating heat is further disposed on the upper side of the first heating unit of the pot lid 3, the fan is disposed above the first heating unit, the pot body 1 is further provided with a control unit 13, the control unit 13 is electrically connected to the photosensor 12, the fan and the first heating unit are started at a predetermined time node, so as to ensure that the pot lid can dissipate heat and cool in time when the first heating unit is working, and prevent the parts from being burnt and deformed, when the cooking utensil is not in place, the light passes through the light-transmitting hole 111 and irradiates the photosensor 12, the photosensor 12 detects a light intensity exceeding a predetermined threshold value and then generates an electrical signal to the control unit 13, the control unit 13 controls the first heating unit and the fan to stop running, in some embodiments, the fan 32 disposed on the upper side of the first heating unit still runs, so as to radiate the pot body 1 and protect the safety of the cooking utensil. It should be noted that the setting position of the control unit 13 is not specifically limited in the present invention: in a specific example, the control unit is provided to a display panel on the front side of the cooking appliance; in another specific example, the control unit 13 is provided to a power supply board in the base of the cooking appliance; in another specific example, the control unit 13 is provided as a separate circuit board in the pan body and is electrically connected to the power supply board and/or the display board.

As a preferred embodiment of the present invention, as shown in fig. 4, a second heating unit 14 for cooking a cooking utensil is provided in the heat-retaining cover 11, the second heating unit 14 can support the inner container 2 and provide heat to the inner container 2 at the lower side of the inner container 2, the cooking utensil has a cooking function when the second heating unit 14 is operated, and the cooking utensil has an air-frying cooking function when the first heating unit is operated. Meanwhile, the cooking appliance provided by the present invention is not particularly limited to the cooking function of the second heating unit 14. In one example, the second heating unit 14 cooperates with a corresponding lid structure to perform pressure cooking, thereby providing the cooking appliance with dual functions of air-burst pressure integration. In another specific example, the second heating unit 14 performs a general cooking function, which can be realized by both open-cover cooking and general cooking similar to a rice cooker, so that the cooking device has a dual function of an air-fried rice cooker.

Furthermore, the second heating unit 14 and the light hole 111 arranged on the side wall of the heat preservation cover 11 are arranged in a staggered manner in the horizontal direction, so that light can be emitted from the light hole 111 conveniently, and when the liner 2 is not placed on the heat preservation cover 11, the second heating unit 14 cannot shield the light hole 111 and block the transmission path of the light generated by the optical radiation heating tube 31 to the outer side of the heat preservation cover 11, and the detection accuracy is improved.

For the way of the light sensor 12 receiving the light from the air holes, the arrangement position of the light sensor 12 in this embodiment may adopt any one of the following embodiments:

example 1: as shown in fig. 4 and fig. 5, in the present embodiment, the photosensor 12 is disposed opposite to the light-transmitting hole 111, and the photosensor 12 directly receives the light directly transmitted from the light-transmitting hole 111 to determine whether the inner container 2 is placed in place; specifically, the photosensor 12 can receive the light passing through the light-transmitting hole 111 by the shortest path of light propagation, reduce the loss of light reflection or refraction during the propagation process, and facilitate the collection of the light.

Example 2: compared with the embodiment 1, in the embodiment, the arrangement position of the photosensitive sensor 12 is more flexible, the photosensitive sensor is not required to be arranged right at the light hole 111, but a reflecting piece is arranged in the range of the irradiation area of the light emitted by the light hole 111, the reflecting piece can reflect the light emitted by the light source, and the photosensitive sensor 12 can receive the light reflected by the reflecting piece to judge whether the inner container 2 is placed in place. The light sensor 12 is arranged at the position staggered with the light hole 111 to indirectly receive light, so that when the cooking appliance cooks, a heat dissipation space exists between heat diffused to the outside of the heat preservation cover 11 through the light hole 111 and the light sensor 12, and the service life of the light sensor 12 is prolonged.

As a preferred embodiment of the present invention, the pot cover is removably placed on the pot body, and in order to electrically connect the electronic components in the pot cover with the electronic components in the pot body, as shown in fig. 2 and 4, the pot cover 3 is provided with an upper coupler 33, the upper coupler 33 is electrically connected with the first heating unit and the fan 32, the pot body 1 is provided with a lower coupler 15, the lower coupler 15 is electrically connected with the control unit 13, the pot cover 3 is separable with respect to the pot body 1, and when the pot cover 3 covers the pot body 1, the upper coupler 33 and the lower coupler 15 are inserted and coupled to realize the power supply and signal transmission between the pot cover 3 and the pot body 1; furthermore, the photosensitive sensor 12, the lower coupler 15 and the control unit 13 are arranged on the same side of the heat-insulating cover 11, so that the internal circuit arrangement of the pot body 1 is facilitated, the position of the control unit 13 is limited on the side part of the pot body 1, the design of a heat-radiating channel and the like at the bottom of the pot body 1 is facilitated, and the heat radiation of the pot body 1 is facilitated.

It should be noted that the connection relationship between the pot cover 3 and the pot body 1 is not specifically limited in the present invention, and the connection relationship may be the split coupling connection described above, or may be the hinged connection, and a wire connecting the pot cover 3 and the pot body 1 is provided at the hinged position, so as to realize the power supply and signal transmission between the pot cover 3 and the pot body 1.

As a preferred embodiment of the present invention, as shown in fig. 4, the pot cover 3 is further provided with a visible window 34, the visible window 34 includes an outer window 341 and an inner window 342 located inside the pot cover 3, a visible cavity 343 is formed between the outer window 341 and the inner window 342, the visible cavity 343 can reduce the heat in the pot body 1 from transferring to the outer window 341 of the pot cover 3, and meanwhile, a user can observe the cooking state of the food material inside the cooking cavity of the pot body 1 through the visible cavity 343 and, in addition, cooperate with the light generated by the light radiation heating tube 31, illuminate the cooking cavity inside the pot body 1, thereby enhancing the visual experience.

As a preferred embodiment of the present invention, as shown in fig. 3, the heat retaining cover 11 has a side wall, a bottom wall, and a transition portion 113, and the light transmission hole 111 is disposed near the transition portion 113. For the visual cooking utensil, the light that can shine into in inner bag 2 or the heat preservation cover 11 has two kinds of sources, one is through the light that sets up the luminescence unit emission of pot cover 3, and its second is through the natural light that the visible window penetrated from the external world, or when cooking utensil was uncapping the state of cooking, the natural light of interveneeing under the no pot cover 3 state, the intervention of above-mentioned natural light probably leads to inner bag 2 when placing in heat preservation cover 11, and light is by the assembly clearance deepening light trap 111 between inner bag 2 and heat preservation cover 11, leads to photosensitive sensor 12 also can receive light and produce the response signal of telecommunication when inner bag 2 placed in heat preservation cover 11, has influenced the degree of accuracy that photosensitive sensor 12 detected. Therefore, the light transmission hole 111 is provided near the transition portion 113 on the opposite side with respect to the side on which the visible cavity 341 is provided, to further avoid the influence of the external natural light on the detection accuracy of the photosensor 12.

The method can be realized by adopting or referring to the prior art in places which are not described in the invention.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments.

The above are merely examples of the present invention, and are not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. The utility model provides a cooking utensil, includes the pot body, inner bag and pot cover, the pot body is including keeping warm the cover, the inner bag can be got to put and place in keep warm the cover, a serial communication port, the pot cover is provided with the luminescence unit, the luminescence unit can to emit light in the heat preservation cover, the heat preservation cover is provided with the light trap, the inner bag is arranged in when keeping warm in the cover, the light trap is sheltered from, the inner bag is not arranged in when keeping warm in the cover, the light trap is relieved and is sheltered from, still be provided with in the pot body and be located the photosensitive sensor in the heat preservation cover outside, photosensitive sensor can receive certainly the light that the light trap sent.

2. The cooking appliance of claim 1,

3. The cooking appliance of claim 2,

4. A cooking appliance according to claim 3,

5. The cooking appliance of claim 1,

6. A cooking appliance according to claim 5,

7. The cooking appliance of claim 1,

8. The cooking appliance of claim 2,

9. The cooking appliance of claim 1,

10. The cooking appliance of claim 9, wherein the heat shield has side walls, a bottom wall, and a transition portion, and wherein the light-transmitting aperture is disposed proximate the transition portion.