CN108784303A - Cover assembly and cooking appliance including same - Google Patents

Abstract

The invention discloses a cover plate assembly and a cooking utensil comprising the same. The cover plate assembly is arranged on a cover body of the cooking appliance, and forms sealing contact with a pot body when the cover body is covered, and comprises a heat-insulating cover plate, a sealing ring and a cover plate support, wherein the cover plate support is connected to the heat-insulating cover plate, the sealing ring is fixed on the heat-insulating cover plate through the cover plate support, an exhaust part is arranged on the sealing ring, and when the pressure in the pot body is higher than a preset pressure, the exhaust part can exhaust gas in the pot body under the action of the pressure. According to the cover plate assembly provided by the invention, the exhaust part is arranged on the sealing ring, so that the cover plate assembly can be exhausted through the exhaust part when the pressure in the cooker is overhigh, the cover body is prevented from being flushed away or other parts are prevented from being damaged when the pressure in China is overhigh, and the safety of a cooking utensil is improved.

Description

Cover assembly and cooking appliance including same

technical field

The invention relates to the related technical field of cooking utensils, in particular to a cover plate assembly and a cooking utensil comprising the same.

Background technique

Electric pressure cookers and some new electric rice cookers have a certain pressure inside the pot when they are in use, and an exhaust valve or similar exhaust device will be installed on the cover to ensure that the pressure value in the pot is within the normal range and avoid excessive pressure. Dangerous. However, when the exhaust device breaks down, such as the exhaust hole is blocked, the pressure in the pot will continue to rise. When the air pressure in the pot is too high, the lid may be opened to cause damage to the pot. At the same time, when the cover is opened, the soup and water in the pot will splash out, causing pollution to the objects around the pot, and even the risk of scalding the user.

Contents of the invention

In view of this, one of the objectives of the present invention is to provide a cover assembly with an air vent on the sealing ring and a cooking appliance including the same.

In the first aspect, a cover plate assembly is provided, which is arranged on the cover body of the cooking appliance. When the cover body is closed, the cover plate assembly forms a sealing contact with the pot body, including a heat preservation cover plate, a sealing ring and a cover plate bracket, the cover bracket is connected to the heat preservation cover, the sealing ring is fixed to the heat preservation cover through the cover bracket,

An exhaust part is provided on the sealing ring, and when the pressure in the pot is higher than a predetermined pressure, the vent part can discharge the gas in the pot under pressure.

Preferably, the predetermined pressure is 35-45KPa, and when the pressure inside the pot is higher than or equal to the predetermined pressure, the gas can be discharged through the exhaust part.

Preferably, the thermal insulation cover plate has a disc-shaped structure, including a cover plate main body and a mounting portion, and the mounting portion is formed on an edge of the cover plate main body along a circumferential direction of the cover plate main body.

Preferably, the cover body includes a groove structure,

A stepped surface is formed on the groove wall of the groove structure, and/or,

Vents are arranged on the bottom wall of the groove structure.

Preferably, the installation part is in an annular structure, and a first installation hole is provided on the installation part;

The cover plate bracket is in the form of a ring structure, and a second installation hole is provided on the ring structure, and the second installation hole is connected to the first installation hole through a connecting piece.

Preferably, a support portion is provided on the surface of the cover bracket close to the mounting portion, the support portion includes ribs formed on the cover bracket, and the ribs are along the surface of the cover bracket. Circumferential setting.

Preferably, the cover support is provided with a sealing ring positioning structure for positioning the sealing ring in the circumferential direction, the sealing ring positioning structure includes a gap formed on the support part, and the sealing ring includes A protrusion formed on the outer edge of the sealing ring and extending radially outward, the protrusion can be inserted into the notch, so as to position the sealing ring in the circumferential direction.

Preferably, the cover bracket is also provided with a sealing ring pressing part, the sealing ring pressing part is a groove-shaped structure, a part of the sealing ring can extend into the groove-shaped structure, and pass through the The groove-shaped structure compresses the sealing ring on the heat preservation cover.

Preferably, the sealing ring is in an annular structure and includes a connecting portion and a sealing portion connected to each other, the connecting portion is connected to the heat preservation cover and is in sealing contact with the heat preservation cover,

The sealing portion is used to form a sealing contact with the pot body.

Preferably, the shape of the connecting part is adapted to the shape of the outer wall of the cover main body of the thermal insulation cover, so that the connecting part can be fitted to the outside of the cover main body and attached to the outer wall of the cover main body to form a sealed contact; and/or,

A flange is provided on the edge of the connecting portion close to the installation portion of the heat preservation cover, the flange is formed along the circumference of the connecting portion, and the flange can extend into the pressing portion of the sealing ring.

Preferably, a protruding structure is also provided on the connecting part, the protruding structure is formed along the circumferential direction of the connecting part, and the protruding structure is used to improve the temperature between the connecting part and the heat preservation cover. of tightness.

Preferably, said sealing portion comprises a first portion and a second portion,

The first part extends radially outward along the sealing part, and is used for contacting the edge of the pot mouth;

The second part extends in a direction away from the connecting part along the axial direction of the sealing part, and is used to form a sealing fit with the inner wall of the pot;

The first part is connected with the second part, and makes the section of the sealing part into an inverted L-shaped structure.

Preferably, the thickness of a partial region of the first part and/or the second part is smaller than the thickness of other regions; and/or,

In a partial area of the sealing part, the first part is not connected to the connection part, the connection part is connected to the second part, the second part is connected to the first part, and in the first part A gap is formed between the connecting portion to reduce the thickness of the connecting portion between the sealing portion and the connecting portion,

A portion of the sealing portion having a small thickness constitutes the exhaust portion.

Preferably, when the sealing ring is installed on the cover, the exhaust part is located near the connection between the cover and the pot.

In a second aspect, a cooking appliance is provided, including the above-mentioned cover plate assembly.

The cover plate assembly provided by the present invention is provided with an exhaust part on the sealing ring, so that when the pressure in the pot is too high, it can be discharged through the exhaust part, so as to avoid the cover from being flushed open or damage to other parts when the domestic pressure is too high. cause damage and increase the safety of cooking appliances.

Description of drawings

Through the following description of the embodiments of the present invention with reference to the accompanying drawings, the above and other objects, features and advantages of the present invention will be more clear, in the accompanying drawings:

Fig. 1 shows a schematic cross-sectional view of a cover plate assembly provided by the present invention;

Fig. 2 shows the schematic diagram of the structure of the insulation cover;

Figure 3 shows a schematic cross-sectional view of the insulation cover;

Figure 4 shows a schematic view of the structure of the cover plate bracket;

Figure 5 shows a schematic structural view of the sealing ring;

Figure 6 shows a schematic cross-sectional view of the sealing ring;

Fig. 7 shows the enlarged view of place A in Fig. 6;

Fig. 8 shows a schematic structural view of the cooking appliance.

Detailed ways

The present invention is described below based on examples, but the present invention is not limited to these examples. Those of ordinary skill in the art will appreciate that the drawings provided herein are for illustration purposes and are not necessarily drawn to scale.

Unless the context clearly requires, throughout the specification and claims, "comprises", "comprises" and similar words should be interpreted in an inclusive sense rather than an exclusive or exhaustive meaning; that is, "including but not limited to" meaning.

In the description of the present invention, it should be understood that the terms "first", "second" and so on are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

The cover plate assembly provided by the present invention is applied to the cover body of cooking utensils, and is especially suitable for cooking utensils with a certain pressure in the pot body, such as pressure cooker, electric rice cooker and the like.

Specifically, as shown in FIG. 1 , the cover assembly 10 provided by the present invention includes a thermal insulation cover 100 , a sealing ring 200 and a cover bracket 300 , and the cover bracket 300 is connected to the thermal insulation cover 100 through a connecting piece. , the sealing ring 200 is arranged between the heat preservation cover 100 and the cover support 300 , and is clamped by the heat preservation cover 100 and the cover support 300 . The sealing ring 200 is provided with an exhaust part. When the pressure in the pot body is higher than the predetermined pressure, the vent part can discharge the gas in the pot body under pressure, so as to reduce the pressure in the pot body and avoid damage to the pot body. , cover, or other parts cause damage.

As shown in Figures 2 and 3, the thermal insulation cover plate 100 is in the shape of a disc, and its specific shape is the same as that of the mouth of the pot. In this embodiment, the thermal insulation cover 100 has a disc-shaped structure, including a cover main body 110 and a mounting portion 120 , and the mounting portion 120 is formed on the cover main body 110 along the circumferential direction of the cover main body 110 the edge of. Preferably, the installation portion 120 is formed along the entire circumference of the cover main body 110 . Preferably, the cover main body 110 has a groove-shaped structure, and the installation part 120 has an annular structure, and the installation part 120 is connected to the edge of the groove wall of the cover main body 110. Further, the installation part 120 and The cover body 110 is integrally formed, for example, by stamping a plate-shaped structure and other operations.

The bottom wall of the cover plate main body 110 is provided with an exhaust hole 111, and the exhaust hole 111 is used to discharge the gas in the pot, so that the pressure in the pot is kept in a normal range, that is, the pressure in the pot is lower than the Book pressure. Preferably, a stepped surface 112 is formed on the groove wall of the cover main body 110 , the setting of the stepped surface 112 can improve the strength of the cover main body 110 , and can also enlarge the groove wall of the cover main body 110 area, so as to increase the contact area between the groove wall of the cover plate main body 110 and the sealing ring 200 to improve the sealing effect (detailed introduction below). The installation part 120 is provided with a first installation hole 121, and the first installation hole 121 is used for the installation of the connector, so that the cover bracket 300 can be connected to the installation part 120, the first There are multiple mounting holes 121 , and the multiple first mounting holes 121 are distributed along the circumferential direction of the mounting portion 120 . A folded edge 122 is provided at the edge of the mounting portion 120 away from the cover main body 110, and the folded edge 122 is formed toward the side where the cover plate main body 110 is formed. The setting of the folded edge 122 can increase the The strength of the mounting part 120.

As shown in FIG. 4 , the cover bracket 300 is in an annular structure, and its size is the same as that of the installation portion 120 . A plurality of second installation holes 301 are arranged on the cover bracket 300 along its circumferential direction. The number and position of the second mounting holes 301 correspond to the first mounting holes 121, so that the cover plate can be fitted with the first mounting holes 121 and the second mounting holes 301 through connectors (such as screws). The bracket 300 is connected to the installation part 120 . Preferably, a support portion 302 is further provided on the surface of the cover bracket 300 close to the installation portion 120, and the support portion 302 is in contact with the installation portion 120. Preferably, the support portion 302 includes a The ribs on the cover bracket 300 are formed along the circumferential direction of the cover bracket 300 , and further, there are multiple ribs arranged on the circumference of different radii. Preferably, the cover bracket 300 is also provided with a sealing ring positioning structure 303, and the sealing ring positioning structure 303 is used for positioning the sealing ring 200 (described in detail below), so that the sealing ring 200 and the There is a unique relative positional relationship between the cover brackets 300 . Further, the sealing ring positioning structure 303 includes a notch formed on the support portion 302 . Similarly, a positioning structure (not shown in the figure) that cooperates with each other is also provided between the cover bracket 300 and the installation part 120 to ensure that there is a gap between the heat preservation cover 100 and the cover bracket 300. The only relative positional relationship. As shown in Figures 1 and 4, the cover support 300 is also provided with a sealing ring pressing part 304, and the sealing ring pressing part 304 is formed along the edge of the inner ring of the cover support 300 for The sealing ring 200 is compressed. Preferably, the sealing ring pressing portion 304 is preferably in a groove-shaped structure, a part of the sealing ring 200 can extend into the groove-shaped structure, and the sealing ring is held by the side wall of the groove-shaped structure. 200 is pressed against the heat preservation cover 100.

As shown in Figures 5 and 6, the sealing ring 200 has an annular structure, including a connecting portion 210 and a sealing portion 220, both of which are annular structures, and the connecting portion 210 and the sealing portion The sealing portion 220 is integrally formed. The connecting part 210 is sleeved on the heat preservation cover 100 , and pressed against the heat preservation cover 100 by the cover support 300 , and the sealing part 220 is used to form a sealing contact with the mouth of the pot.

The shape of the inner wall of the connecting part 210 is adapted to the shape of the outer wall of the cover body 110 of the heat preservation cover 100, so that the connecting part 210 can be fitted to the outside of the cover body 110 and attached to the cover The outer wall of the main body 110 to form a sealing contact. The connecting portion 210 is provided with a flange 211 near the edge of the mounting portion 120 of the heat preservation cover 100 , the flange 211 is formed along the circumference of the connecting portion 210 , and the flange 211 makes the connecting portion The edge of 210 forms a groove-like structure, and the opening of the groove-like structure faces the sealing portion 220 . When the cover bracket 300 presses the sealing ring 200 onto the heat preservation cover 100 , the flange 211 on the connecting portion 210 is embedded into the groove-shaped structure formed by the sealing ring pressing portion 304 , the sealing ring pressing part 304 presses the edge part of the connecting part 210 on the installation part 120 to complete the installation of the sealing ring 200 .

Preferably, the connecting portion 210 is further provided with a sealing strengthening structure, and the sealing strengthening structure is used to improve the sealing between the connecting portion 210 and the heat preservation cover 100 . Specifically, the sealing strengthening structure includes a protruding structure formed on the connecting portion 210 along its circumference, and the protruding structure increases the pressure between the connecting portion 210 and the heat preservation cover plate 100 . Specifically, the protruding structure includes a first protruding structure 212 and a second protruding structure 213, the first protruding structure 212 is in contact with the installation part 120, and the second protruding structure 213 is in contact with the The cover body 110 is in contact. The arrangement of the first protruding structure 212 and the second protruding structure 213 makes the contact between the connecting portion 210 and the heat preservation cover plate 100 tighter, thereby improving the sealing effect.

Preferably, as shown in FIG. 5 , the connecting portion 210 is further provided with a positioning portion 214 , and the positioning portion 214 cooperates with the sealing ring positioning structure 303 on the cover bracket 300 to align the sealing ring 200 The installation is positioned. In this embodiment, the positioning portion 214 is a protruding structure formed radially outward on the connecting portion 210, and the positioning portion 214 is located in the sealing ring positioning structure 303 during installation, and at the same time plays a role The functions of positioning and anti-fooling ensure that there is a unique relative positional relationship between the sealing ring 200 and the cover plate support 300 .

The sealing part 220 is used to form sealing contact with the pot body, the sealing part 220 includes a first part 221 and a second part 222, and the first part 221 and the second part 222 are connected. The first part 221 extends outward along the radial direction of the sealing part 220 for contacting the edge of the pot mouth; the second part 220 is away from the connecting part 210 along the axial direction of the sealing part 220 Extended to form a sealing fit with the inner wall of the pot, the first part 221 is connected to the second part 222, and its cross section is an inverted L-shaped structure, and the first part 221 intersects with the second part 222 The position of the connecting part 210 is connected to the connecting part 210. In order to improve the sealing effect between the sealing part 220 and the pot body, a part of the first part 221 and the second part 222 is connected to the connecting part 210, so as to improve the sealing effect of the connecting part 220. The strength of the joint can exert a greater compression force on the pot body, so as to obtain a better sealing effect. When the cover plate assembly is closed on the pot body, the first part 221 is pressed against the edge of the pot mouth, and the second part 222 extends into the pot body and forms a sealing contact with the inner wall of the pot body. Preferably, a plurality of protruding structures are formed on the surface of the first part 221 in contact with the edge of the pot mouth, and the protruding structures play a supporting role when the first part 211 contacts the edge of the pot mouth, thereby The second part 222 can be turned over or has a tendency to turn over, so that the second part 222 can be pressed against the inner wall of the pot to improve the sealing effect.

An exhaust part is also provided on the sealing part 220, and the exhaust part does not perform exhaust under normal circumstances. When the pressure is too high, the exhaust part can discharge the gas in the pot, for example, when the pressure reaches or is higher than a predetermined pressure, the exhaust part starts to exhaust, and when the pressure is lower than the predetermined pressure, the The exhaust part is no longer exhausted. Preferably, the predetermined pressure is 35-45KPa, preferably 40KPa.

Preferably, the thickness of the partial area on the sealing part 220 is small, for example, the thickness of the first part 221 and/or the second part 222 can be reduced, so that the pressing force between it and the pot body is relatively small. Small, when the pressure value in the pot body is higher than the normal pressure, the high-pressure gas can separate the small thickness area on the sealing part 220 from the pot body to form an exhaust channel for the gas to discharge, thereby reducing the pressure in the pot. When the pressure inside the pot returns to a normal value, the seal between the sealing portion 220 and the pot body can be restored again, and the gas will not continue to flow out from there. Alternatively, the thickness of the junction of the sealing portion 220 and the connecting portion 210 can also be reduced. Since the thickness here is larger than the thickness of the first portion 221 and the second portion 222, reducing the thickness at this place is not necessary. It will greatly affect the overall strength of the sealing part 220 . Further, as shown in FIG. 7 , the first part 221 is not directly connected to the connecting part 210 , the connecting part 210 is connected to the second part 222 , and the second part 222 is connected to the first part 221 A gap is formed between the first portion 221 and the connecting portion 210 , so as to reduce the thickness of the connecting portion between the sealing portion 220 and the connecting portion 210 . In this way, when the pressure inside the pot is too high, the high-pressure gas can push the second part 222 and the first part 221 to move towards the connecting part 210, thereby forming an exhaust channel for the gas to discharge.

The part with a smaller thickness on the sealing part 220 constitutes the exhaust part, preferably, there is one exhaust part, and further, the exhaust part is located at the position where the lid body is connected to the pot body during installation , that is, the exhaust part is located at the rear side of the cooking appliance, so as to ensure that the gas is discharged toward the rear side of the pot body when the gas is exhausted through the exhaust part, so as to avoid scalding the user when the gas is discharged forward.

As shown in FIG. 8 , the present invention provides a cooking utensil, the lid of the cooking utensil is provided with the cover assembly 10 , and when the lid is closed on the pot body 10 , the cover assembly 10 It is in sealing contact with the pot body 20 so that the inside of the pot body 20 can have a certain pressure. Preferably, the cooking utensils include a pressure cooker, an electric rice cooker and the like.

The cover plate assembly provided by the present invention is provided with an exhaust part on the sealing ring, so that when the pressure in the pot is too high, it can be discharged through the exhaust part, so as to avoid the cover from being flushed open or damage to other parts when the domestic pressure is too high. cause damage and increase the safety of cooking appliances.

Those skilled in the art can easily understand that, on the premise of no conflict, the above-mentioned preferred solutions can be freely combined and superimposed.

It should be understood that the above-mentioned implementations are only exemplary rather than limiting, and those skilled in the art can make various obvious or equivalent solutions to the above-mentioned details without departing from the basic principles of the present invention. Any modification or replacement will be included in the scope of the claims of the present invention.

Claims (15)

1. a kind of cover plate assembly is arranged on the lid of cooking appliance, when cover cap closes between the cover plate assembly and pot body It is formed in sealing contact, which is characterized in that including heat-preserving cover plate, sealing ring and cover board support, the cover board support is connected to described On heat-preserving cover plate, the sealing ring is fixed to by the cover board support on the heat-preserving cover plate,

It is provided with exhaust portion on the sealing ring, when pressure is higher than predetermined pressure in the pot body, the exhaust portion can press The gas in the pot body is discharged under force effect.

2. cover plate assembly according to claim 1, which is characterized in that the predetermined pressure is 35-45KPa.

3. cover plate assembly according to claim 2, which is characterized in that the disk-shaped structure of heat-preserving cover plate, including cover board Main body and mounting portion, the mounting portion are formed in the edge of the cover plate main body along the circumferential direction of the cover plate main body.

4. cover plate assembly according to claim 3, which is characterized in that the cover plate main body includes bathtub construction,

Cascaded surface is formed on the cell wall of the bathtub construction, and/or,

It is provided with gas vent on the bottom wall of the bathtub construction.

5. cover plate assembly according to claim 3, which is characterized in that mounting portion structure in a ring, the mounting portion On be provided with the first mounting hole；

Cover board support structure in a ring is provided with the second mounting hole, second mounting hole and institute in the loop configuration The first mounting hole is stated to connect by connector.

6. cover plate assembly according to claim 5, which is characterized in that close to the face of the mounting portion on the cover board support On be provided with support portion, the support portion includes the convex ribs being formed on the cover board support, and the convex ribs are along the cover board branch Frame it is circumferentially disposed.

7. cover plate assembly according to claim 6, which is characterized in that be provided with sealing ring positioning knot on the cover board support Structure, for the sealing ring position in circumferential direction, the sealing ring location structure includes being formed on the support portion Notch, the sealing ring include being formed in the sealing ring outer rim and to the protrusion that radial outside extends, the protrusion can It is inserted into the notch, to be positioned to the circumferential direction of the sealing ring.

8. cover plate assembly according to claim 5, which is characterized in that be additionally provided with sealing ring compression on the cover board support Portion, the sealing ring compressed part structure in the form of slot, a part for the sealing ring can extend into the groove-like structure, and lead to It crosses the groove-like structure sealing ring is pressed on the heat-preserving cover plate.

9. cover plate assembly according to claim 8, which is characterized in that sealing ring structure in a ring, including mutually interconnect The interconnecting piece and sealing connect, the interconnecting piece and heat-preserving cover plate connection are simultaneously in sealing contact between the heat-preserving cover plate,

The sealing is in sealing contact for being formed with the pot body.

10. cover plate assembly according to claim 9, which is characterized in that the interconnecting piece shape and the heat-preserving cover plate The outer wall shape adaptation of cover plate main body enables the interconnecting piece to cover the outside for being attached to the cover plate main body and is fitted in the lid It is in sealing contact to be formed on the outer wall of plate body；And/or

The interconnecting piece is provided with flange close to the edge of the mounting portion of the heat-preserving cover plate, and the flange is along the interconnecting piece Circumferential to be formed, the flange can extend into the sealing ring compressed part.

11. cover plate assembly according to claim 9, which is characterized in that be additionally provided with bulge-structure, institute on the interconnecting piece The circumferential direction that bulge-structure is stated along the interconnecting piece is formed, and the bulge-structure is for improving the interconnecting piece and the heat-preserving cover plate Between leakproofness.

12. cover plate assembly according to claim 9, which is characterized in that the sealing includes first part and second Point,

The first part extends along the radially outward side of the sealing, is used for and pot mouth EDGE CONTACT；

The second part extends along the axial of the sealing to the direction far from the interconnecting piece, for the inner wall shape with pot Coordinate at sealing；

The first part is connected with the second part, and makes the sealing section at inversed l-shaped structure.

13. cover plate assembly according to claim 12, which is characterized in that the first part and/or the second part Subregion thickness be less than other regions thickness；And/or

The first part is set not connect with the interconnecting piece in the subregion of the sealing, the interconnecting piece and described the Two parts connect, and the second part connect with the first part, formed between the first part and the interconnecting piece Gap, to reduce the thickness of the sealing and the interconnecting piece junction,

The part that thickness is small on the sealing constitutes the exhaust portion.

14. cover plate assembly according to claim 13, which is characterized in that when the sealing ring is installed on the lid, The exhaust portion is located at close to the position of the lid and the pot body junction.

15. a kind of cooking appliance, which is characterized in that including the cover plate assembly described in one of claim 1-14.