CN115316841B

CN115316841B - Radiating device and cooking utensil with same

Info

Publication number: CN115316841B
Application number: CN202211122262.6A
Authority: CN
Inventors: 胡玉新; 张继尧; 李振合; 郑芝云; 孔进喜
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2022-09-15
Filing date: 2022-09-15
Publication date: 2023-04-25
Anticipated expiration: 2042-09-15
Also published as: CN115316841A

Abstract

The invention provides a heat dissipation device and a cooking utensil with the same, wherein the heat dissipation device comprises: a cover adapted to contact the heat source; the heat dissipation cover is arranged above the cover body, and a heat dissipation cavity is formed between the cover body and the heat dissipation cover in a surrounding manner; the fins are arranged in the heat dissipation cavity; and the compressing piece is arranged between the heat dissipation cover and the fins and provides compressing force towards the cover body for the fins. The compressing piece provides the compressive force towards the lid direction to the fin, and when lid and heat dissipation cover are heated and lead to the two inconsistent that warp, the compressing piece can compress tightly the fin to make fin and lid closely laminate, also compensate the clearance inhomogeneous between lid and the heat dissipation cover promptly, make and have higher heat exchange efficiency all the time between fin and the lid.

Description

Radiating device and cooking utensil with same

Technical Field

The invention relates to the technical field of small household appliances, in particular to a heat dissipation device and a cooking appliance with the same.

Background

Electric pressure cookers are commonly used household appliances. The current electric pressure cooker has a quick cooking function, and the principle is that the cooking cavity is pressurized in a sealing way, so that the cooking temperature is increased, and the cooking time is shortened. However, after the pressure cooking operation is finished, the user cannot immediately uncover the cover to take out the food, especially soup, fluid or viscous food, because the food cannot be directly deflated for quick cooling (the food overflows due to direct deflation), and therefore, a long waiting time is required for natural cooling. For example, users cook porridge for about 35 minutes, while electric pressure cookers naturally cool for up to 25 minutes, resulting in longer overall cooking times and poorer user experience.

In addition, when some foods are pressure cooked, the calculated pressure cooking time does not calculate additional time generated in the pressure drop process of the electric cooker, so that the actual pressure cooking time of the foods is longer than the cooking time set by a user, and the taste of the foods can be influenced by the slow pressure release of the pressure cooker. Therefore, how to realize rapid cooling and pressure relief after cooking and enable a user to rapidly uncover is a problem to be solved in electric pressure cooker products.

In order to solve the above-mentioned problems, some electric pressure cookers in the prior art have a cooling structure, for example, a heat dissipation cover is covered on a lock cover of the electric pressure cooker, and a space between the heat dissipation cover and the lock cover is provided with heat dissipation fins. After cooking, heat in the electric pressure cooker is transferred to the fins through the locking cover. The air outlet is formed in the heat dissipation cover, hot air in the heat dissipation cover is pumped out through the external fan, so that the lock cover and the heat dissipation fins can continuously exchange heat, and the purpose of quickly cooling and reducing the pressure of the cooking cavity is achieved. However, in the above structure, the lock cover and the heat dissipation cover are two split parts, and the materials are different, so that the deformation of the lock cover and the heat dissipation cover is different due to the high temperature during cooking, the gaps are uneven, and the fins cannot be tightly attached to the lock cover, so that the heat dissipation efficiency is poor.

Disclosure of Invention

Therefore, the technical problem to be solved by the invention is to overcome the defect that the heat dissipation efficiency is poor because the heat dissipation fins cannot be tightly attached to the lock cover due to different deformation of the lock cover and the heat dissipation cover when the electric pressure cooker in the prior art is used for cooking, thereby providing the heat dissipation device and the cooking utensil with the heat dissipation device.

In order to solve the above problems, the present invention provides a heat dissipating device, comprising: a cover adapted to contact the heat source; the heat dissipation cover is arranged above the cover body, and a heat dissipation cavity is formed between the cover body and the heat dissipation cover in a surrounding manner; the fins are arranged in the heat dissipation cavity; and the compressing piece is arranged between the heat dissipation cover and the fins and provides compressing force towards the cover body for the fins.

Optionally, the fin is a plurality of, and a plurality of fins are radial arrangement along the center of lid, and the clamp is annular, and clamp and a plurality of fins all butt.

Optionally, the top wall of the heat dissipation cover is provided with an annular groove, and the pressing piece is arranged in the annular groove.

Optionally, the pressing piece is provided with a convex part, and the convex part is abutted with the top wall of the heat dissipation cover.

Optionally, the pressing piece is provided with an elastic arm, and the protruding portion is arranged on the elastic arm.

Optionally, the pressing member is provided with two opposing cutouts, and a portion between the two cutouts forms the elastic arm.

Optionally, the elastic arms are plural, and the plural elastic arms are disposed at intervals along the circumferential direction of the pressing member.

Optionally, the compression member is made of sheet metal, plastic or carbon fiber.

Optionally, the cover body is a locking cover of the electric pressure cooker.

The invention also provides a cooking appliance comprising: a pot body; the pot cover is covered on the pot body and covers the heat dissipation device.

The invention has the following advantages:

by utilizing the technical scheme of the invention, the compressing piece provides the compressing force towards the direction of the cover body for the fins, when the cover body and the heat dissipation cover are heated to cause inconsistent deformation of the cover body and the heat dissipation cover, the compressing piece can compress the fins, the fins are tightly attached to the cover body, namely, uneven gaps between the cover body and the heat dissipation cover are compensated, and therefore, the fins and the cover body always have higher heat exchange efficiency. Therefore, the technical scheme of the invention solves the defect that the heat dissipation efficiency is poor because the heat dissipation fins cannot be tightly attached to the lock cover due to different deformation of the lock cover and the heat dissipation cover when the electric pressure cooker in the prior art is used for cooking.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 shows a schematic structure of a heat dissipating device of the present invention;

FIG. 2 shows a schematic side view of the heat sink of FIG. 1;

FIG. 3 shows a schematic cross-sectional view of the heat sink of FIG. 1;

FIG. 4 shows an enlarged schematic view at A in FIG. 3;

FIG. 5 is a schematic view showing the structure of a pressing member of the heat dissipating device of FIG. 1; and

fig. 6 shows an enlarged schematic view at B in fig. 5.

Reference numerals illustrate:

10. a cover body; 20. a heat dissipation cover; 21. an annular groove; 30. a heat dissipation cavity; 40. a fin; 50. a pressing member; 51. a convex portion; 52. an elastic arm; 53. and (5) cutting.

Detailed Description

The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.

As shown in fig. 1, the heat dissipating device of the present embodiment includes a cover body 10, a heat dissipating cover 20, fins 40, and a pressing member 50. Wherein the cover 10 is adapted to be in contact with a heat source. The heat dissipation cover 20 is arranged above the cover body 10, and a heat dissipation cavity 30 is defined between the cover body 10 and the heat dissipation cover 20. Fins 40 are disposed within the heat dissipation chamber 30. The pressing member 50 is disposed between the heat dissipation cap 20 and the fins 40, and provides a pressing force to the fins toward the cover 10.

By utilizing the technical scheme of the embodiment, the compressing member 50 provides the fin 40 with a compressing force towards the direction of the cover body 10, when the cover body 10 and the heat dissipation cover 20 are heated to cause inconsistent deformation of the two, the compressing member 50 can compress the fin, and the fin 40 is tightly attached to the cover body 10, namely, uneven gaps between the cover body 10 and the heat dissipation cover 20 are compensated, so that higher heat exchange efficiency is always provided between the fin 40 and the cover body 10. Therefore, the technical scheme of the embodiment solves the defect that when the electric pressure cooker in the prior art is used for cooking, the locking cover and the radiating cover are different in deformation, so that the radiating fins cannot be tightly attached to the locking cover, and the radiating efficiency is poor.

It should be noted that, the heat dissipating device in this embodiment is used in an electric pressure cooker, that is, the cover 10 is used to cover the cooker. Of course, the heat sink may also be applied in other household appliances or cooking appliances, such as electric cookers, and the like. The heat sink is used in the electric pressure cooker as an example.

As can be seen in connection with fig. 1 and 2, the heat sink housing 20 includes a top wall and an annular side wall. The heat dissipation cover 20 is disposed at an upper position of the cover body 10, and an accommodating space, that is, the above-mentioned heat dissipation chamber 30 is defined between the heat dissipation cover 20 and the cover body 10. The fins 40 are disposed in the heat dissipation chamber 30 for heat exchange with the cover 10.

After the electric pressure cooker finishes cooking, heat in the cooker body is conducted to the fins 40 through the cover body 10. The heat dissipation cover 20 is further provided with an air outlet (not shown in the figure), and the air outlet is connected with external air extraction equipment (such as a fan) through a pipeline. The external air extraction equipment extracts the hot air in the heat dissipation cavity 30, so that the cooling of the fins 40 is realized, and the temperature and the pressure of the pot body are continuously reduced.

In addition, the middle part of the top wall of the heat dissipation cover 20 is provided with an avoidance port, and the avoidance port is circular. The avoiding opening is used for enabling structures such as an exhaust pipe, a safety valve and the like on the cover body 10 to penetrate.

As shown in fig. 1 and 3, in the technical solution of the present embodiment, a plurality of fins 40 are provided, the plurality of fins 40 are radially arranged along the center of the cover body 10, the pressing member 50 is annular, and the pressing member 50 abuts against the plurality of fins 40. Specifically, the fins 40 have a substantially elongated structure, and a plurality of the fins 40 are arranged at intervals in the circumferential direction. Further, as can be seen in conjunction with fig. 3, one end of the fin 40 extends to the relief opening of the heat sink cap 20, and the other end extends to the edge of the top surface of the cover 10. Air channels are formed between adjacent fins 40.

As can be seen in connection with fig. 5, the hold-down member 50 has a ring-shaped configuration and is circular. The round pressing member 50 can press each fin 40 to ensure the heat exchange effect between the plurality of fins 40 and the cover 10.

Of course, the fins 40 may be disposed in other arrangements within the heat dissipation chamber 30, and the shape of the pressing member 50 may be adaptively adjusted (e.g., C-shaped or other shapes).

As shown in fig. 4, in the technical solution of the present embodiment, the top wall of the heat dissipation cover 20 is provided with an annular groove 21, and the pressing member 50 is disposed in the annular groove 21. Specifically, an annular groove 21 is provided on the inner surface of the top wall of the heat dissipation cover 20, and the width of the annular groove 21 is slightly larger than the width of the pressing member 50. The annular groove 21 can have a positioning effect on the pressing member 50.

As shown in fig. 6, in the technical solution of the present embodiment, the pressing member 50 is provided with a protrusion 51, and the protrusion 51 abuts against the top wall of the heat dissipating cover 20. Specifically, when the pressing member 50 is fitted in the annular groove 21, the convex portion 51 abuts against the bottom wall of the annular groove 21. The convex portion 51 has a certain elasticity (for example, is made of silica gel), so that when the pressing member 50 contacts the fin 40, a pressing force directed downward can be provided to the fin 40 so that the fin 40 is in close contact with the cover 10.

As can be seen in connection with fig. 5, the plurality of projections 51 are provided in plurality, and the plurality of projections 51 are uniformly distributed along the circumferential direction of the pressing member 50.

As shown in fig. 5 and 6, in the technical solution of the present embodiment, the pressing member 50 is provided with an elastic arm 52, and the protrusion 51 is provided on the elastic arm 52.

Specifically, the elastic arm 52 means that one or both ends thereof are connected to the pressing member 50. When the elastic arm 52 is forced, an end or a middle portion thereof can be deformed to provide pressure to the pressing member 50.

As can be seen in connection with fig. 6, in this embodiment, the elastic arms 52 are connected to the pressing member 50 at both ends, and the protrusions 51 are provided on the elastic arms. After the pressing member 50 is fitted in the annular groove 21 and the pressing member 50 is in contact with the fin 40, the convex portion 51 is pressed and the middle portion of the elastic arm 52 is deformed. After the middle portion of the elastic arm 52 is deformed, a downward pressing force is applied to the pressing member 50 as a whole, so that the fin 40 is in close contact with the cover 10.

As can be seen in conjunction with fig. 5, the elastic arms 52 are provided in plurality, and the plurality of elastic arms 52 are provided at intervals along the circumferential direction of the pressing member 50. Each elastic arm 52 is provided with a convex portion 51, and each elastic arm 52 is provided with two convex portions 51.

As shown in fig. 6, in the technical solution of the present embodiment, two opposite cutouts 53 are provided on the pressing member 50, and a portion between the two cutouts 53 forms an elastic arm 52. Specifically, the slit 53 is linear, and the slit 53 penetrates both upper and lower surfaces of the pressing member 50. The two cutouts 53 are arranged in parallel, and the portion of the pressing member 50 between the two cutouts 53 forms the above-described elastic arm 52.

The above structure makes the formation of the elastic arm 52 simple, and the notch 53 is formed in the pressing member 50. In some embodiments, not shown, the resilient arms 52 may also be attached to the hold down 50 by welding, fastening, or integral injection molding.

Preferably, the pressing member 50 is made of sheet metal, plastic or carbon fiber. Specifically, the pressing member 50 itself has a certain elasticity, so that the pressing member 50 can provide a certain pressing force to the fin 40 when contacting the fin 40, so that the fin 40 is in close contact with the cover 10.

Preferably, the cover 10 in this example is a locking cover for an electric pressure cooker. That is, the cover 10 is used to lock with an inner pot on the pot.

The embodiment also provides a cooking utensil which comprises a pot body and a pot cover. The pot cover is covered on the pot body, and the pot cover is the heat radiator.

Preferably, the cooking appliance in the embodiment is an electric pressure cooker, wherein a cooker body of the electric pressure cooker comprises a shell and an inner cooker arranged in the shell, and cooker teeth are arranged on the upper edge of the inner cooker. The inner pot is also provided with an inner container which is used for containing food to be cooked. The pot cover comprises an inner cover and a plastic surface cover arranged outside the inner cover. The heat dissipating device is arranged below the inner cover, wherein the cover body 10 is a lock cover, and the lock cover is rotatably arranged and is used for rotating the lock cover through a handle on the pot cover, so that a cover tooth on the lock cover is locked with a pot tooth on the inner pot, and the fixation between the pot cover and the pot body is realized.

When the electric pressure cooker is used for cooking, the inner container is heated so as to cook food. After cooking, heat in the inner container is transferred to the fins 40 through the locking cover. The external air extraction equipment starts the extraction of heat in the grouting heat dissipation cavity 30, so that the continuous cooling and depressurization of the inner container is realized. Because the cooking temperature is higher, the deformation of the locking cover and the heat dissipation cover 20 are inconsistent, and the pressing piece 50 is arranged to provide the pressing force towards the locking cover for the fins 40, so that the fins 40 are always tightly attached to the locking cover, and the heat exchange efficiency is ensured.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.

Claims

1. A heat sink for a cooking appliance, comprising:

a cover (10) adapted to be in contact with a heat source;

the heat dissipation cover (20) is covered above the cover body (10), and a heat dissipation cavity (30) is formed between the cover body (10) and the heat dissipation cover (20);

a fin (40) disposed within the heat dissipation chamber (30);

the heat dissipation cover comprises a pressing piece (50) and is arranged between the heat dissipation cover (20) and the fins (40), the pressing piece (50) provides pressing force for the fins (40) towards the cover body (10), an elastic arm (52) is arranged on the pressing piece (50), a protruding portion (51) is arranged on the elastic arm (52), and the protruding portion (51) is in butt joint with the top wall of the heat dissipation cover (20).

2. The heat dissipating device according to claim 1, wherein the fins (40) are plural, the plural fins (40) are radially arranged along the center of the cover (10), the pressing member (50) is annular, and the pressing member (50) is abutted against the plural fins (40).

3. The heat sink according to claim 2, characterized in that the top wall of the heat sink cap (20) is provided with an annular groove (21), the compression member (50) being arranged in the annular groove (21).

4. Heat sink according to claim 1, characterised in that the hold-down element (50) is provided with two opposite cut-outs (53), the part between the two cut-outs (53) forming the resilient arm (52).

5. The heat dissipating device according to claim 1, wherein the plurality of elastic arms (52) are provided, and the plurality of elastic arms (52) are provided at intervals along the circumferential direction of the pressing member (50).

6. A heat sink according to any one of claims 1 to 3, wherein the heat sink is

The pressing piece (50) is made of sheet metal parts, plastics or carbon fibers.

7. A heat sink according to any one of claims 1-3, characterised in that the cover (10) is a locking cover of an electric pressure cooker.

8. A cooking appliance, comprising:

a pot body;

a lid for covering the pot body, the lid comprising the heat dissipating device according to any one of claims 1 to 7.