WO2019085602A1

WO2019085602A1 - Pressure detection device used for cooking utensil and cooking utensil having same

Info

Publication number: WO2019085602A1
Application number: PCT/CN2018/101803
Authority: WO
Inventors: 程志喜; 王云峰; 张帆; 熊贵林
Original assignee: 佛山市顺德区美的电热电器制造有限公司
Priority date: 2017-11-02
Filing date: 2018-08-22
Publication date: 2019-05-09

Abstract

Provided is a pressure detection device (100) used for a cooking utensil. The pressure detection device comprises: a shell (11), the shell (11) having a first air hole (1112) and a second air hole (1122); a flexible sealing member (12), the flexible sealing member (12) dividing an inner cavity into a first air cavity (1111) and a second air cavity (1121), and one side, facing towards the second air cavity (1121), of the flexible sealing member (12) being deformed when the air pressure in the first air cavity (1111) is greater than the air pressure of the second air cavity (1121); a magnetic member (13) capable of moving according to the deformation of the flexible sealing member (12); a sensing member (14) used for sensing the displacement of the magnetic member (13); and a detection unit used for acquiring the air pressure in the first air cavity (1111) according to the displacement information sensed by the sensing member (14). A cooking utensil having the pressure detection device is further disclosed.

Description

Pressure detecting device for cooking appliance and cooking appliance therewith

Technical field

The present invention relates to the field of cooking equipment, and more particularly to a pressure detecting device for a cooking appliance and a cooking appliance having the same.

Background technique

In the electric pressure cooker of the related art, the pressure in the cooking chamber is indirectly detected by a mechanical displacement switch or a temperature sensor to achieve pressure control. However, the mechanical displacement switch is difficult to achieve multi-point pressure control, and the cooking pressure cannot be adjusted as needed; the temperature sensor is a heat-sensitive device, and the measured pressure in the cooking chamber has a certain hysteresis, and the current air pressure value cannot be monitored in real time and cannot be guaranteed. Pressure accuracy, there is an need for improvement.

Summary of the invention

The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a pressure detecting device for a cooking appliance that can measure the air pressure value accurately and in real time.

The invention also proposes a cooking appliance having the above pressure detecting device.

A pressure detecting device for a cooking appliance according to an embodiment of the first aspect of the present invention, comprising: a housing that is substantially cylindrical and has a first air hole and a second air hole that are electrically connected to a cavity of the housing a flexible seal disposed in the housing to divide the inner cavity into a first air cavity in communication with the first air hole and a second air cavity in communication with the second air hole, The flexible seal is deformed toward a side of the second air chamber when the air pressure in the first air chamber is greater than the air pressure in the second air chamber; and the magnetic member is disposed on the magnetic member a second air chamber and connected to the flexible sealing member to move according to deformation of the flexible sealing member; an inductive member for sensing displacement of the magnetic member, the sensing member being disposed in the second air chamber The detecting unit is connected to the sensing component, and the detecting unit is configured to acquire the air pressure in the first air cavity according to the displacement information sensed by the sensing component.

According to the pressure detecting device for a cooking appliance according to an embodiment of the present invention, by providing a flexible sealing member, a magnetic member and a sensing member in the housing, the flexible sealing member can be deformed according to the pressure difference on both sides thereof to drive the magnetic member to continuously move, thereby The sensing component can sense the continuous displacement information of the magnetic component, thereby adjusting the pressure as needed, and the sensing component can quickly and sensitively sense the displacement information of the magnetic component, thereby ensuring that the pressure detecting device can detect the first air cavity accurately and in real time. The current pressure value is conducive to achieving pressure control.

According to a further embodiment of the present invention, the second air chamber is further provided with an elastic member, and two ends of the elastic member are respectively connected with the inner wall of the second air chamber and the magnetic member.

According to an optional embodiment of the present invention, the magnetic member is formed in a column shape, and one end of the magnetic member is snap-connected to the flexible sealing member, and the other end of the magnetic member is coupled to the elastic member.

Optionally, the elastic member is a spring.

According to a still further embodiment of the present invention, one end of the housing forms an open end, and the open end is provided with a movable adjustment member for adjusting the pre-stress of the elastic member.

Optionally, the adjustment member is threadedly coupled to the housing.

Optionally, the second air hole is disposed on the adjusting member.

According to an embodiment of the invention, the magnetic member forms a magnetic core, and the sensing member forms a coil.

According to an embodiment of the present invention, the housing includes: a lower case having the first air hole; an upper case connected to the lower case and the upper case The housing has the second air vent, and the flexible seal is coupled between the lower housing and the upper housing.

A cooking appliance according to an embodiment of the second aspect of the present invention, comprising: a pot body having a cooking chamber having an open top; a lid body provided on the pot body to open and close the cooking chamber The open end of the pressure detecting device for a cooking appliance according to the above embodiment, the pressure detecting device is disposed on the cover body, and the first air hole is in communication with the cooking cavity.

The additional aspects and advantages of the invention will be set forth in part in the description which follows.

DRAWINGS

The above and/or additional aspects and advantages of the present invention will become apparent and readily understood from

1 is a perspective view of a pressure detecting device for a cooking appliance according to an embodiment of the present invention;

2 is a schematic structural view of a pressure detecting device for a cooking appliance in one state according to an embodiment of the present invention;

Figure 3 is a schematic view showing the structure of the pressure detecting device shown in Figure 2 in another state;

4 is a schematic structural view of a cooking appliance in accordance with an embodiment of the present invention.

Reference mark:

Pressure detecting device 100,

The housing 11, the lower housing 111, the first air chamber 1111, the first air hole 1112, the flange portion 1113, the upper housing 112, the second air chamber 1121, the second air hole 1122, the sinking table 1123, the support member 113, are mounted Cavity 1131,

Flexible seal 12, tab 121, pleat 122,

Magnetic member 13,

Inductive member 14, elastic member 15, adjusting member 16,

The pot body 200, the cooking chamber 21, the lid body 300, and the seal 400.

Detailed ways

The embodiments of the present invention are described in detail below, and the examples of the embodiments are illustrated in the drawings, wherein the same or similar reference numerals are used to refer to the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are intended to be illustrative of the invention and are not to be construed as limiting.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inside", "outside", " The orientation or positional relationship indicated by the directions of the axial direction, the radial direction, the "circumferential direction" and the like is based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description of the present invention and a simplified description, rather than indicating or implying The device or component must have a particular orientation, configuration and operation in a particular orientation, and thus is not to be construed as limiting the invention. Furthermore, features defining "first" and "second" may include one or more of the features, either explicitly or implicitly.

In the description of the present invention, it should be noted that the terms "installation", "connected", and "connected" are to be understood broadly, and may be fixed or detachable, for example, unless otherwise explicitly defined and defined. Connected, or integrally connected; can be mechanical or electrical; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of the two components. The specific meaning of the above terms in the present invention can be understood in a specific case by those skilled in the art.

A pressure detecting device 100 for a cooking appliance according to an embodiment of the present invention will be described below with reference to Figs.

As shown in FIGS. 1 to 4, a pressure detecting device 100 for a cooking appliance according to an embodiment of the present invention includes a housing 11, a flexible seal 12, a magnetic member 13, a sensing member 14, and a detecting unit (not shown). .

The housing 11 is substantially cylindrical and has a first air hole 1112 and a second air hole 1122 that are electrically connected to the inner cavity of the housing 11. A flexible seal 12 is disposed within the housing 11 to divide the inner chamber into a first air chamber 1111 and a second air chamber 1121. The first air chamber 1111 is in communication with the first air hole 1112, and the second air chamber 1121 is in communication with the second air hole 1122. When the air pressure in the first air chamber 1111 is greater than the air pressure in the second air chamber 1121, the flexible seal 12 is in the same Deformed toward the second air chamber 1121 by the pressure difference between the two sides.

The magnetic member 13 is disposed within the second air chamber 1121 and coupled to the flexible seal 12 to move in accordance with the deformation of the flexible seal 12. The sensing member 14 is disposed in the second air chamber 1121 for sensing the displacement of the magnetic member 13. The detecting unit is connected to the sensing member 14 for acquiring the air pressure in the first air chamber 1111 according to the displacement information sensed by the sensing member 14.

According to the pressure detecting device 100 for a cooking appliance according to an embodiment of the present invention, by providing the flexible sealing member 12, the magnetic member 13 and the sensing member 14 in the housing 11, the flexible sealing member 12 can be deformed according to the pressure difference between the two sides thereof. The magnetic member 13 continuously moves, so that the sensing member 14 can sense the continuous displacement information of the magnetic member 13, so that the pressure can be adjusted as needed, and the sensing member 14 can quickly and sensitively sense the displacement information of the magnetic member 13 to ensure the pressure detection. The device 100 can accurately and in real time detect the current pressure value of the first air chamber 1111, which is beneficial to achieve pressure control.

According to an embodiment of the present invention, an elastic member 15 is further disposed in the second air chamber 1121, and two ends of the elastic member 15 are respectively connected to the inner wall of the second air chamber 1121 and the magnetic member 13. When the flexible sealing member 12 is deformed toward the side of the second air chamber 1121, the magnetic member 13 is moved, the elastic member 15 is gradually compressed, and when the air pressure in the first air chamber 1111 is reduced, the magnetic member 13 is recovered in the elastic member 15. Gradually return to the position under the force. By providing the elastic member 15 in the second air chamber 1121, the energy storage function of the elastic member 15 can be used to push the magnetic member 13 to be reset, and the use reliability is high.

In some examples, the resilient member 15 is a spring and the spring is disposed between the inner wall of the second air cavity 1121 and the magnetic member 13. The structure is simple, the installation is convenient, and the cost is low.

As shown in FIGS. 2 and 3, in some examples, the magnetic member 13 is formed in a columnar shape, and one end of the magnetic member 13 (the lower end as shown in FIGS. 2 and 3) is connected to the flexible sealing member 12, and the magnetic member 13 is further One end (the upper end as shown in FIGS. 2 and 3) is connected to the elastic member 15.

In some specific examples, the housing 11 extends in a vertical direction (up and down direction as shown in FIG. 1), the magnetic member 13 forms a columnar shape extending in the axial direction of the housing 11, and the lower end of the magnetic member 13 and the flexible sealing member 12 The clips are connected to each other, and a spring is disposed above the magnetic member 13, and the lower end of the spring is abutted against the upper end of the magnetic member 13, and the upper end of the spring is abutted against the top wall of the second air chamber 1121 of the housing 11.

According to a further embodiment of the invention, one end of the housing 11 forms an open end, and a movable adjustment member 16 is provided at the open end for adjusting the pre-stress of the elastic member 15.

As shown in FIGS. 2 and 3, in some examples, the second air chamber 1121 in the housing 11 is located above the first air chamber 1111, and the top of the housing 11 has an open end, that is, the top of the second air chamber 1121. Opened, the opening end is provided with an adjusting member 16 which can be screwed to the housing 11. By controlling the length of the mating threaded connecting portion of the adjusting member 16 and the housing 11, the length of the adjusting member 16 extending into the housing 11 can be controlled. Thereby, the pre-pressure of the elastic member 15 is adjusted to ensure that the initial position and pressure range of the magnetic member 13 and the sensing member 14 are in an initial design state.

In some examples, the second air vent 1122 is disposed on the adjustment member 16. Referring to FIGS. 2 and 3, the adjusting member 16 extends in the axial direction of the housing 11, and the central portion of the adjusting member 16 is provided with an air flow passage extending along the axial direction thereof, and one end of the air flow passage is communicated into the second air chamber 1121. The other end of the air flow passage forms a second air hole 1122. By providing the second air hole 1122 on the adjusting member 16, the manufacturing process of the housing 11 is simplified, and the assembly is convenient, which is advantageous for improving production efficiency.

According to an embodiment of the present invention, the housing 11 includes a lower housing 111 and an upper housing 112. The lower housing 111 has a first air hole 1112. The lower end of the upper casing 112 is connected to the upper end of the lower casing 111 and the upper casing 112 has a second air hole 1122, and the flexible seal 12 is connected between the lower casing 111 and the upper casing 112.

Specifically, the first air hole 1112 is located at the bottom of the lower casing 111, the second air hole 1122 is located at the top of the upper casing 112, and the outer circumference of the flexible seal 12 is connected between the lower casing 111 and the upper casing 112, thereby making the flexibility A first air chamber 1111 communicating with the first air hole 1112 is defined between the sealing member 12 and the lower housing 111, and a second air chamber communicating with the second air hole 1122 is defined between the flexible sealing member 12 and the upper housing 112. 1121.

In some alternative examples, the upper housing 112 and the lower housing 111 are snap-fitted. For example, the upper end of the lower casing 111 is bent into the lower casing 111 to form a flange portion 1113. Correspondingly, the lower end outer wall of the upper casing 112 is provided with a sinking table 1123 that cooperates with the flange portion 1113. The upper casing 112 After being combined with the lower casing 111, the flange portion 1113 is press-fitted on the sunken table 1123 to achieve the engagement between the upper casing 112 and the lower casing 111, and the connection is reliable.

In other alternative examples, the upper housing 112 is threadedly coupled to the lower housing 111. For example, the inner side wall of the upper end of the lower casing 111 is provided with internal threads, and the outer side wall of the lower end of the upper casing 112 is provided with external threads. The two are convenient to connect, and no unnecessary connecting members are needed, which is advantageous for cost reduction. Of course, the specific connection structure in which the upper casing 112 and the lower casing 111 are screwed is not limited thereto.

In some examples, the outer peripheral edge of the lower end surface of the upper casing 112 is provided with a card slot extending in the circumferential direction thereof, and the outer periphery of the flexible sealing member 12 is provided with a card protrusion 121 fitted in the card slot. That is, the outer periphery of the flexible sealing member 12 is interposed between the upper casing 112 and the lower casing 111, and the flexible sealing member 12 and the upper casing 112 are engaged with the card protrusion 121 through the card slot to prevent the flexible sealing member. The detachment from the upper casing 112 and the lower casing 111 under the action of air pressure further ensures the reliability of the connection of the flexible sealing member 12 to the casing 11.

In some examples, a pressure ring is disposed between the lower end surface of the upper casing 112 and the lower casing 111, the pressure ring is press-fitted on the outer circumference of the flexible seal 12, and the pressure ring is disposed toward one side of the flexible seal 12. There is a card slot extending along the circumferential direction thereof, and the outer periphery of the flexible sealing member 12 is provided with a card protrusion 121 fitted in the card slot. That is, the outer periphery of the flexible sealing member 12 is pressed between the pressing ring and the lower housing 111, and the flexible sealing member 12 and the pressing ring are engaged with the tab protrusion 121 through the card slot to prevent the flexible sealing member 12 from being under the action of air pressure. The detachment from the pressure ring and the lower casing 111 further ensures the reliability of the connection of the flexible seal 12 to the casing 11.

In some examples, when the flexible seal 12 is in the initial mounting position, the flexible seal 12 has a pleated portion 122 that deforms toward the second air cavity 1121 when the air pressure within the first air cavity 1111 increases. The pleat portion 122 is gradually stretched, so that the fatigue seal 12 can be prevented from being fatigue-deformed due to long-term use, which is advantageous for extending the service life of the flexible seal member 12.

A specific embodiment of a pressure detecting device 100 for a cooking appliance according to an embodiment of the present invention will now be described with reference to Figs. The pressure detecting device 100 herein is particularly suitable for a cooking appliance in which the lid body 300 is separable from the pot body 200.

As shown in FIGS. 1 to 3, a pressure detecting device 100 for a cooking appliance according to an embodiment of the present invention includes a lower case 111, an upper case 112, a flexible seal 12, a magnetic member 13, an inductive member 14, a spring, The adjusting member 16 and the supporting member 113 are composed. Among them, the magnetic member 13 forms a magnetic core, and the sensing member 14 forms a coil.

The upper casing 112 and the lower casing 111 respectively extend in the up and down direction shown in FIG. 1, and the upper end and the lower end of the upper casing 112 each form an open end, and the upper end of the lower casing 111 forms an open end, and the lower end of the lower casing 111 A first air hole 1112 is provided. The lower end of the upper casing 112 extends into the open end of the lower casing 111 and is coupled to the upper end of the lower casing 111, and the outer periphery of the flexible seal 12 is coupled to the lower end of the upper casing 112 and the lower casing 111. Thus, the flexible seal 12 and the lower housing 111 define a first air cavity 1111 that communicates with the first air hole 1112. The flexible seal 12 and the upper housing 112 define a second air cavity 1121 having an open end at the top.

The support member 113 is formed in a ring shape and is disposed in the second air chamber 1121. The annular support member 113 and the inner wall surface of the upper housing 112 define an annular mounting cavity 1131 for receiving the coil, and the magnetic core is disposed in the second air chamber 1121 and Located in the central passage of the support member 113, the lower end of the magnetic core is snap-connected to the upper surface of the flexible seal member 12, and the magnetic core is linearly movable in the central passage of the annular support member 113 along the axial direction of the upper housing 112.

The adjusting member 16 is detachably disposed in the upper open end of the upper casing 112, and the adjusting member 16 is provided with a second air hole 1122 communicating with the second air chamber 1121. The spring is disposed in the second air chamber 1121 and is spring-loaded. The upper end is connected to the adjusting member 16, and the lower end of the spring is connected to the magnetic core. The user or the operator can adjust the preload of the spring by adjusting the position of the adjustment member 16.

The first air hole 1112 is in communication with the cooking cavity 21 of the cooking appliance, that is, the air pressure in the first air chamber 1111 is equal to the air pressure in the cooking chamber 21, and the second air hole 1122 is in communication with the outside atmosphere, that is, in the second air chamber 1121. The air pressure is equal to the air pressure of the external environment of the cooking appliance.

As shown in FIG. 4, during operation, the steam in the cooking chamber 21 enters the first air chamber 1111 through the first air hole 1112 to act on the flexible sealing member 12. If the air pressure in the cooking chamber 21 is gradually increased, the flexible sealing member 12 overcomes the gravity of the magnetic member 13 and the elastic force of the spring, and deforms into the second air chamber 1121 (ie, upward), thereby driving the magnetic core to move upward, the spring is gradually compressed, and the coil can sense the displacement information of the magnetic core even if the coil The sensed quantity is changed, and the sensed displacement information is fed back to the detecting unit. The detecting unit calculates the air pressure of the first air chamber 1111 according to the received displacement information, that is, the air pressure in the current cooking chamber 21 is obtained.

It can be understood that since the magnetic member 13, the sensing member 14, the spring and the like are all disposed in the second air chamber 1121 and isolated from the steam in the cooking chamber 21, the working stability of each member can be ensured. The relative amount of the magnetic core and the coil is different, and the amount of the generated inductance is changed. The pressure detecting device 100 of the embodiment of the present invention causes the relative displacement of the magnetic core and the coil to cause a change in the sensitivity by using the magnitude of the gas and fluid pressure. The detection unit detects the change of the sensed quantity and calculates the magnitude of the gas and fluid pressure, which is not affected by the steam saturation and the atmospheric pressure. The precise control of the air pressure in the cooking chamber 21 can be ensured under various conditions.

A cooking appliance according to an embodiment of the present invention will be described below with reference to FIG. 4, which may be a rice cooker or a pressure cooker.

As shown in FIG. 4, a cooking apparatus according to an embodiment of the present invention includes a pot body 200, a lid body 300, and a pressure detecting device 100 for a cooking appliance according to the above embodiment. The pot body 200 has a cooking chamber 21 that is open at the top. A cover 300 is provided on the pan 200 to open and close the open end of the cooking chamber 21. The pressure detecting device 100 is disposed on the cover 300, and the first air hole 1112 is in communication with the cooking cavity 21.

Since the pressure detecting device 100 for a cooking appliance according to an embodiment of the present invention has the above-described technical effects, the cooking appliance according to the embodiment of the present invention also has the above-described technical effects, that is, the cooking appliance has a simple and compact structure, and various components The connection is reliable, and when the cooking appliance is in operation, the pressure detecting device 100 can detect the air pressure in the cooking chamber 21 in real time and accurately, and realize the detection of the working state of the cooking appliance, that is, achieve pressure control and meet user requirements.

In some examples, the pressure detecting device 100 is disposed in the cover 300, and at least a portion of the lower end of the lower housing 111 of the pressure detecting device 100 protrudes out of the cover 300. When the cover 300 is closed, the cooking chamber 21 and the first An air chamber 1111 communicates through a first air hole 1112 on the lower housing 111. Thereby, the pressure detecting device 100 can accurately and quickly measure the value of the air pressure in the cooking chamber 21.

In some examples, the cover 300 is provided with an annular seal 400 that is positioned between the top of the pot 200 and the cover 300 when the cover 300 is closed, thereby ensuring the tightness of the cooking chamber 21.

Other configurations and operations of the cooking appliance and pressure detecting apparatus 100 in accordance with embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.

In the description of the present specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples", etc. Particular features, structures, materials or features described in the examples or examples are included in at least one embodiment or example of the invention. In the present specification, the schematic representation of the above terms does not necessarily mean the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

While the embodiments of the present invention have been shown and described, the embodiments of the invention may The scope of the invention is defined by the claims and their equivalents.

Claims

A pressure detecting device for a cooking appliance, comprising:

a housing, the housing is substantially cylindrical and has a first air hole and a second air hole that are electrically connected to the inner cavity of the housing;

a flexible seal disposed in the housing to partition the inner cavity into a first air cavity in communication with the first air hole and a second air cavity in communication with the second air hole When the air pressure in the first air chamber is greater than the air pressure in the second air chamber, the flexible seal is deformed toward a side of the second air chamber;

a magnetic member disposed in the second air chamber and coupled to the flexible seal to move according to deformation of the flexible seal;

An inductive member for sensing displacement of the magnetic member, the sensing member being disposed in the second air chamber;

The detecting unit is connected to the sensing component, and the detecting unit is configured to acquire the air pressure in the first air cavity according to the displacement information sensed by the sensing component.
The pressure detecting device for a cooking appliance according to claim 1, wherein an elastic member is further disposed in the second air chamber, and two ends of the elastic member respectively and an inner wall of the second air chamber Connected to the magnetic member.
A pressure detecting device for a cooking appliance according to claim 2, wherein said magnetic member is formed in a columnar shape, and one end of said magnetic member is snap-connected to said flexible sealing member, and said magnetic member is further One end is connected to the elastic member.
A pressure detecting device for a cooking appliance according to claim 2, wherein the elastic member is a spring.
A pressure detecting device for a cooking appliance according to claim 2, wherein one end of said housing forms an open end, and said open end is provided with a movable adjusting member for adjusting said elastic member Pre-pressure.
A pressure detecting device for a cooking appliance according to claim 5, wherein said adjusting member is screwed to said housing.
A pressure detecting device for a cooking appliance according to claim 5, wherein said second air hole is provided on said adjusting member.
A pressure detecting device for a cooking appliance according to any one of claims 1 to 7, wherein the magnetic member forms a magnetic core, and the sensing member forms a coil.
A pressure detecting device for a cooking appliance according to any one of claims 1-8, wherein the housing comprises:

a lower casing, the lower casing having the first air hole;

An upper housing, the upper housing being coupled to the lower housing and the upper housing having the second air vent, the flexible seal being coupled between the lower housing and the upper housing.
A cooking appliance comprising:

a pot body having a cooking chamber with an open top;

a cover body, the cover body is disposed on the pot body to open and close an open end of the cooking cavity;

The pressure detecting device for a cooking appliance according to any one of claims 1 to 9, wherein the pressure detecting device is provided in the cover body, and the first air hole is in communication with the cooking chamber.