CN107874611B

CN107874611B - Pot cover assembly and cooking utensil with same

Info

Publication number: CN107874611B
Application number: CN201610872432.0A
Authority: CN
Inventors: 雷俊; 刘文华; 王云峰; 江德勇; 黄庶锋; 张帆; 黄韦铭
Original assignee: Foshan Shunde Midea Electrical Heating Appliances Manufacturing Co Ltd
Current assignee: Foshan Shunde Midea Electrical Heating Appliances Manufacturing Co Ltd
Priority date: 2016-09-30
Filing date: 2016-09-30
Publication date: 2021-04-20
Anticipated expiration: 2036-09-30
Also published as: CN107874611A

Abstract

The invention discloses a pot cover assembly and a cooking appliance with the same, wherein the pot cover assembly comprises: an outer cover; the inner cover is arranged on the outer cover and defines an accommodating cavity together with the outer cover, and a foam through hole communicated with the accommodating cavity is formed in the inner cover; the anti-overflow detection device is a capacitive detection device and is arranged in the accommodating cavity. The pot cover assembly provided by the embodiment of the invention has the advantages of low cost, accurate anti-overflow detection and the like.

Description

Pot cover assembly and cooking utensil with same

Technical Field

The invention relates to the technical field of electric appliance manufacturing, in particular to a pot cover assembly and a cooking appliance with the pot cover assembly.

Background

In order to implement an anti-overflow function, an anti-overflow detecting device is generally provided in a cooking appliance such as an electric rice cooker. Be applied to cooking utensil's anti-overflow detection device among the correlation technique, realize overflowing signal's detection through the resistance characteristic of detection water, need set up two piece at least probes, the cost is higher, and sensitivity is relatively poor.

Disclosure of Invention

The present invention is directed to solving, at least to some extent, one of the above-mentioned problems in the prior art. Therefore, the invention provides the pot cover assembly which has the advantages of low cost, accurate anti-overflow detection and the like.

The invention also provides a cooking appliance with the pot cover assembly.

To achieve the above object, an embodiment according to a first aspect of the present invention provides a pot lid assembly, including: an outer cover; the inner cover is arranged on the outer cover and defines an accommodating cavity together with the outer cover, and a foam through hole communicated with the accommodating cavity is formed in the inner cover; the anti-overflow detection device is a capacitive detection device and is arranged in the accommodating cavity.

The pot cover assembly provided by the embodiment of the invention has the advantages of low cost, accurate anti-overflow detection and the like.

In addition, the pot cover assembly according to the above embodiment of the invention may further have the following additional technical features:

according to one embodiment of the invention, the outer surface of the outer cover is provided with an air outlet communicating with the accommodation chamber.

According to one embodiment of the invention, an air outlet cavity communicated with the air outlet is arranged in the outer cover, and an air passing hole communicated with the air outlet cavity and the accommodating cavity is arranged on the outer cover.

According to one embodiment of the invention, the outer cover includes a body and a cover plate, the cover plate is detachably mounted on the body, and when the cover plate is mounted on the body, the cover plate and the body jointly define the air outlet cavity.

According to one embodiment of the invention, the lower surface of the outer cover is provided with a groove, and the anti-overflow detection device and the air passing opening are arranged on the bottom wall of the groove at intervals.

According to one embodiment of the invention, the lower surface of the outer cover is provided with a groove, and the anti-overflow detection device is arranged on the bottom wall of the groove.

According to an embodiment of the present invention, a distance between an upper surface of the inner cap and a lower surface of the outer cap is not less than 3 mm.

According to an embodiment of the present invention, the pot cover assembly further includes a capacitance detection chip, the capacitance detection chip is connected to the anti-overflow detection device, and the capacitance detection chip generates a detection signal by detecting a capacitance variation of the anti-overflow detection device.

According to one embodiment of the present invention, the overflow prevention detecting device includes: an electrical conductor; the capacitance detection device comprises an insulator, wherein the insulator at least covers the lower surface and/or the side surface of the conductor, the lower surface and/or the side surface of the insulator form a detection surface, the capacitance value of the conductor changes along with the change of a contact medium of the detection surface, the capacitance detection chip is connected with the conductor, and the capacitance detection chip detects the capacitance value change of the conductor to generate a detection signal.

According to an embodiment of the present invention, the pot cover assembly further comprises: and the main control chip is communicated with the capacitance detection chip to receive the detection signal and judges whether the overflow phenomenon occurs or not according to the detection signal.

According to one embodiment of the present invention, a resistor is connected between the capacitance detection chip and the conductor.

According to one embodiment of the invention, the outer cover comprises a body and an air outlet cavity detachably arranged on the body, and the air outlet cavity comprises a cover plate and a seat body, wherein the cover plate is detachably assembled above the seat body and defines the air outlet cavity together with the seat body.

Embodiments according to a second aspect of the invention propose a cooking appliance comprising a pot; a lid assembly for opening and closing the pot body, the lid assembly being in accordance with an embodiment of the first aspect of the invention.

According to the cooking appliance provided by the embodiment of the invention, the pot cover assembly provided by the embodiment of the first aspect of the invention has the advantages of low cost, good heating effect and the like.

According to one embodiment of the invention, the cooking appliance is an electric rice cooker or an electric pressure cooker.

Drawings

Fig. 1 is an exploded view of a cooking appliance according to an embodiment of the present invention.

Fig. 2 is a sectional view of a cooking appliance according to an embodiment of the present invention.

Fig. 3 is a schematic structural view of an anti-overflow detecting device of a pot cover assembly according to an embodiment of the present invention.

Reference numerals: the cooking utensil 1, the pot cover assembly 10, the outer cover 100, the body 101, the cover plate 102, the air outlet 110, the air outlet cavity 120, the air vent 130, the groove 140, the inner cover 200, the foam through hole 210, the anti-overflow detection device 300, the electric conductor 310, the insulator 320, the detection surface 321, the capacitance detection chip 330, the main control chip 340, the resistor 350, the accommodating cavity 400 and the pot body 20.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

A pot lid assembly 10 according to an embodiment of the present invention is described below with reference to the accompanying drawings.

As shown in fig. 1 to 3, the pot cover assembly 10 according to the embodiment of the present invention includes an outer cover 100, an inner cover 200, and an overflow prevention detecting means 300.

The inner lid 200 is mounted on the outer lid 100 and defines a receiving chamber 400 together with the outer lid 100, and the inner lid 200 is provided with foam passing holes 210 communicating with the receiving chamber 400. The overflow prevention detecting device 300 is a capacitive detecting device and is disposed in the receiving chamber 400.

As will be understood by those skilled in the art, the capacitive detection device refers to a device that, according to the capacitive sensing principle, when the detected medium is dipped into the detection device, the capacitance of the detection device is changed, and the change is converted into a standard current signal, so as to realize the anti-overflow related control.

According to the pot cover assembly 10 of the embodiment of the present invention, by using the capacitive detection means for the overflow prevention detection means 300, when the liquid (e.g., foam) in the cooking appliance contacts the overflow prevention detection means 300, the detection of the overflow signal can be achieved by detecting the change of the capacitance value. Therefore, the anti-overflow detection function can be realized, and compared with a resistance type detection mode in the related technology, the cost of the anti-overflow detection device 300 can be reduced, so that the cost of the cooking utensil is reduced, the misjudgment probability is reduced, and the accuracy of anti-overflow detection is improved.

Also, by constituting the receiving chamber 400 by the outer cap 100 and the inner cap 200, and disposing the overflow prevention detecting means 300 in the receiving chamber 400, the overflow prevention detecting means 300 can be located between the outer cap 100 and the inner cap 200. When liquid in the cooking appliance enters the accommodating cavity 400 through the foam through holes 210 of the inner cover 200, the anti-overflow detection device 300 detects the liquid, the cooking appliance stops heating, so that the liquid flows back, and the cooking appliance is heated again until the anti-overflow detection device 300 cannot detect the liquid, so that the food is heated and boiled sufficiently. Compare anti-overflow detection device 300 and stretch into the mode in cooking utensil's the pan through inner cup 200, can avoid liquid and anti-overflow detection device 300 to take place the adhesion, lead to the foam on the anti-overflow detection device 300 to descend in other positions slowly, avoid making anti-overflow detection device 300 detect liquid before liquid flows back to completely to avoid cooking utensil stop heating's time overlength, guarantee the boiling time of food, improve the heating effect to food, thereby guarantee cooking utensil's culinary art effect.

Therefore, the pot cover assembly 10 according to the embodiment of the invention has the advantages of low cost, accurate anti-overflow detection and the like.

In some embodiments of the present invention, as shown in fig. 1 to 3, the pot lid assembly 10 according to the embodiment of the present invention includes an outer lid 100, an inner lid 200, and an overflow prevention detecting means 300.

The outer surface of the exterior cover 100 is provided with an air outlet 110 communicating with the receiving chamber 400. Therefore, the gas in the cooking utensil can be conveniently discharged, the liquid can conveniently enter the accommodating cavity 400, the detection sensitivity of the anti-overflow detection device 300 is improved, and the cooking utensil can be timely stopped from being heated.

It will be understood by those skilled in the art that the air outlet 110 may not be provided on the exterior cover 100 or in communication with the receiving chamber 400.

Specifically, as shown in fig. 2, an air outlet cavity 120 communicating with the air outlet 110 is provided in the outer cover 100, and an air vent 130 communicating the air outlet cavity 120 and the accommodating cavity 400 is provided in the outer cover 100. Therefore, gas and liquid overflowing from the accommodating cavity 400 can be buffered by the gas outlet cavity 120, the gas and the liquid are prevented from being directly sprayed out of the gas outlet 110, and the reliability of the cooking appliance 1 is improved.

More specifically, as shown in fig. 2, the outer cover 100 includes a body 101 and an air outlet cavity detachably disposed on the body 101, the air outlet cavity includes a cover plate 102 and a seat body, and the cover plate 102 is detachably assembled above the seat body and defines an air outlet cavity 120 together with the seat body.

In one embodiment of the present invention, the cover 100 includes a body 101 and a cover 102, the cover 102 is detachably mounted on the body 101, and when the cover 102 is mounted on the body 101, the cover 102 and the body 101 together define the outlet chamber 120. Therefore, the cover plate 102 can be disassembled to clean the air outlet cavity 120, so that food residues entering the air outlet cavity 120 along with gas and liquid are prevented from remaining in the air outlet cavity 120.

In another embodiment of the present invention, as shown in fig. 1, the lower surface of the outer cap 100 is provided with a recess 140 (the up-down direction is shown by arrow a in fig. 1-3), and the overflow prevention detecting means 300 and the air vent 130 are spaced apart from each other on the bottom wall of the recess 140. Therefore, the anti-overflow detection device 300 can be conveniently arranged, the height of the pot cover assembly 10 can be conveniently controlled, liquid can conveniently enter and exit the foam through hole 210, and the detection accuracy and sensitivity of the anti-overflow detection device 300 are improved.

In another embodiment of the present invention, the lower surface of the outer cap 100 is provided with a recess 140, and the overflow prevention detecting means 300 is provided on the bottom wall of the recess 140. This may also facilitate the provision of the overfill prevention detection device 300.

Advantageously, the distance between the upper surface of the inner lid 200 and the lower surface of the outer lid 100 is not less than 3 mm. This ensures the volume of the receiving chamber 400, and further improves the accuracy and sensitivity of the detection of the overflow prevention detection device 300.

Fig. 3 shows a cooking appliance 1 according to one specific example of the present invention. As shown in fig. 3, the lid assembly 10 further includes a capacitive sensing chip 330.

Specifically, the overfill prevention detection device 300 includes a conductive body 310 and an insulator 320. The insulator 320 covers at least the lower surface and/or the side surface of the conductor 310, the lower surface and/or the side surface of the insulator 320 forms a detection surface 321, and the capacitance value of the conductor 310 changes with the change of the medium contact of the detection surface 321. The capacitance detection chip 330 is connected to the conductive body 310, and the capacitance detection chip 330 detects a capacitance variation of the conductive body 310 to generate a detection signal. The detection surface 321 may be formed by the lower surface and/or the side surface of the insulator 320, and when the liquid in the cooking appliance contacts the detection surface 321, the capacitance value of the conductive body 310 changes, and the capacitance detection chip 330 detects the change of the capacitance value of the conductive body 310 to generate the detection signal, thereby detecting whether the liquid overflows or not, and realizing the function of the overflow prevention detection.

More specifically, as shown in fig. 3, the overflow prevention detecting device 300 further includes a main control chip 340. The main control chip 340 communicates with the capacitance detection chip 330 to receive the detection signal, and determines whether an overflow phenomenon occurs according to the detection signal. Therefore, whether liquid overflows or not can be judged by using the main control chip 340, and the cooking state of the cooking appliance is convenient to control.

Advantageously, as shown in FIG. 3, a resistor 350 is connected between the capacitive sensing chip 330 and the conductive body 310. The resistor 350 is used for filtering the capacitance variation signal of the conductive body 200, so that the anti-interference effect can be achieved. Among them, the resistance value of the resistor 350 may preferably be 10 Ω to 10k Ω.

Specifically, the inner lid 200 may be detachably provided on the outer lid 100.

The cooking appliance 1 according to the embodiment of the present invention is described below. The cooking appliance 1 according to the embodiment of the present invention includes a pot body 20 and a pot cover assembly.

The lid assembly is used to open and close the pot body 20, and is the lid assembly 10 according to the above-described embodiment of the present invention.

According to the cooking utensil 1 of the embodiment of the invention, by utilizing the pot cover assembly 10 of the embodiment of the invention, the advantages of low cost, good heating effect and the like are achieved.

The cooking appliance 1 is an electric cooker or an electric pressure cooker. Therefore, the capacitive anti-overflow detection function can be realized in the electric cooker or the electric pressure cooker, the cooking effect of the electric cooker or the electric pressure cooker is improved, and the cost of the electric cooker or the electric pressure cooker is reduced.

Other constructions and operations of the cooking appliance 1 according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail herein.

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; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. 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 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. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. A lid assembly, comprising:

an outer cover;

the inner cover is arranged on the outer cover and defines an accommodating cavity together with the outer cover, and a foam through hole communicated with the accommodating cavity is formed in the inner cover;

the anti-overflow detection device is a capacitance detection device and is arranged in the accommodating cavity, and an air outlet communicated with the accommodating cavity is formed in the outer surface of the outer cover;

electric capacity detects the chip, electric capacity detect the chip with anti-overflow detection device links to each other, electric capacity detects the chip through detecting anti-overflow detection device's capacitance value variation is in order to generate detecting signal, anti-overflow detection device includes: an electrical conductor; the capacitance detection device comprises an insulator, wherein the insulator at least covers the lower surface and/or the side surface of the conductor, the lower surface and/or the side surface of the insulator form a detection surface, the capacitance value of the conductor changes along with the change of a contact medium of the detection surface, the capacitance detection chip is connected with the conductor, and the capacitance detection chip detects the capacitance value change of the conductor to generate a detection signal.

2. The lid assembly of claim 1, wherein the outer lid defines an outlet chamber communicating with the outlet port, and the outer lid defines an air vent communicating with the outlet chamber and the receiving chamber.

3. The lid assembly of claim 2, wherein the outer lid includes a body and a cover plate removably mounted to the body, the cover plate and the body together defining the outlet cavity when the cover plate is mounted to the body.

4. The lid assembly of claim 2, wherein the lower surface of the outer lid has a recess, and the overflow prevention detection means and the air vent are spaced apart from each other on a bottom wall of the recess.

5. The pot cover assembly of claim 1, wherein the lower surface of the outer cover is provided with a groove, and the overflow prevention detecting means is provided on a bottom wall of the groove.

6. The pot cover assembly of claim 1, wherein a distance between an upper surface of the inner cover and a lower surface of the outer cover is no less than 3 mm.

7. The pan cover assembly of claim 1, further comprising:

and the main control chip is communicated with the capacitance detection chip to receive the detection signal and judges whether the overflow phenomenon occurs or not according to the detection signal.

8. The lid assembly of claim 1, wherein a resistor is coupled between the capacitive sensing chip and the conductor.

9. The lid assembly of claim 2, wherein the outer lid includes a body and an air outlet cavity detachably disposed on the body, the air outlet cavity includes a cover plate and a base, and the cover plate is detachably mounted on the base and defines the air outlet cavity together with the base.

10. A cooking appliance, comprising:

a pan body;

a lid assembly for opening and closing the pot body, the lid assembly being in accordance with any one of claims 1-9.

11. The cooking appliance of claim 10, wherein the cooking appliance is an electric rice cooker or an electric pressure cooker.