CN113520152A - Heat collection structure, cover body assembly and pressure cooker - Google Patents

Abstract

The invention provides a heat collection structure, a cover body assembly and a pressure cooker. According to the fluid mechanics principle, the angle between the arc side of the water drop type structure and the incoming cooling air has a great influence on the heat exchange quantity of the fins, and when the water drop type arc surface is in front of the cooling air, the cooling air can smoothly flow through all the surfaces of the fins. When the water drop type side faces the wind, the cooling air flow is blocked to a great extent. Therefore, by the arrangement mode, the effective contact area between the heat dissipation body and cooling air is remarkably increased, the heat exchange effect is effectively improved, and the cooling effect on the pressure cooker is further improved. Simultaneously, because heat collecting structure self area is great, can cover the top position of establishing at whole inner bag, consequently compare with the mode of air current direct action at the inner bag lateral wall among the prior art, the technical scheme of this application can increase heat transfer area and heat transfer effect effectively.

Description

Heat collection structure, cover body assembly and pressure cooker

Technical Field

The invention relates to the technical field of pressure cooking equipment, in particular to a heat collection structure, a cover body assembly and a pressure cooker.

Background

Pressure cookers are widely used today due to their safety and convenience. The electric pressure cooker raises the boiling point of water to over 100 ℃ by increasing the pressure of the inner cooker, so that food is cooked quickly. However, after the electric pressure cooker finishes cooking, the cover can be opened only when the pressure in the cooker is still too high and is gradually reduced within a safety limit. The pressure cooker in the prior art does not have a function of forcibly shortening the pressure relief time generally, so the pressure relief time is too long under the general condition, and the too long waiting time brings great inconvenience to a user who needs to open a cover quickly and have a meal.

Therefore, aiming at the technical problems that the traditional electric pressure cooker is too long in pressure relief time and cannot be opened quickly, the purpose of reducing the pressure relief time is mainly realized by accelerating the cooling of the inner pot in the prior art. In order to achieve the effect of accelerating the cooling of the inner pot, in the pressure cooker provided in the prior art, an electric heating disc is arranged at the bottom of the inner pot, a wind-collecting cover is arranged below the electric heating disc, and a fan is arranged below the wind-collecting cover and extends towards the side wall of the inner pot. After the fan is started, the airflow is guided by the air collecting cover to act on the side wall of the fan, so that the inner pot is cooled.

The cooling process of pot and the inside food of interior pot in foretell structure can accelerate, however, because the air current that the fan produced mainly acts on the outer wall position of pot in, the interaction time between air current and the interior pot is shorter simultaneously, therefore the cooling effect is not obvious. Meanwhile, because the air collecting cover is separated from the heat source, the utilization rate of the normal-temperature airflow generated by the fan is low. In summary, the cooling effect of the above structure setting mode is not obvious enough, and further the pressure relief speed is affected.

Disclosure of Invention

Therefore, the technical problem to be solved by the invention is to overcome the defect that the pressure cooker in the prior art adopts a mode of cooling the side wall of the inner container, and has adverse effects on cooling and pressure relief effects.

To this end, the present invention provides a heat collecting structure comprising: a support plate; the heat radiators are arranged on the supporting plate in an annular matrix mode, and the leeward ends of the heat radiators face the center direction of the supporting plate.

The heat collection structure provided by the invention comprises the following heat dissipation bodies: the water drop part is arranged at the windward end of the heat radiation body.

The heat collection structure provided by the invention, the heat radiation body further comprises: and the furling parts of the plurality of heat radiators face the central direction of the supporting plate.

According to the heat collection structure provided by the invention, the heat radiation body and the support plate are integrally forged and formed.

According to the heat collection structure provided by the invention, the cross section of the heat radiation body is in one or more of an oval shape and a rectangular shape along the longitudinal axis direction of the heat radiation body.

The annular matrix comprises a plurality of radiator rings which are concentrically arranged, wherein the distance between every two adjacent radiator rings is R, the supporting plate is circularly arranged, the radius of the supporting plate is R, each radiator ring comprises a plurality of radiators which are equidistantly arranged, the linear distance between every two adjacent radiators is L, wherein R-R is L, and L is more than or equal to 1.5mm and less than or equal to 8.5 mm.

The invention also provides a cover body assembly, which comprises: the cooker cover is internally provided with a second accommodating cavity; the heat collection structure provided by the invention is arranged in the second accommodating cavity.

The cover body assembly provided by the invention further comprises: the air guide structure is arranged above the heat collection structure, an air outlet is formed in the air guide structure, and the air outlet corresponds to the support plate.

The cover body assembly provided by the invention further comprises: the fan assembly is arranged inside the fan assembly, and airflow generated by the fan is suitable for entering the air guide structure and being discharged through the air outlet.

The invention also provides a pressure cooker, which comprises: the cooker body is internally provided with a first accommodating cavity; the heating assembly is arranged at the bottom position of the first accommodating cavity; the inner pot is arranged above the heating assembly, and an inner container is arranged in the inner pot; further comprising: the cover body assembly is arranged on the cooker body, the supporting plate of the cover body assembly is arranged above the inner pot, the fan assembly is arranged on the cover body assembly, and the fan assembly is arranged on the outer wall of the cooker body.

The technical scheme of the invention has the following advantages:

1. the heat collection structure comprises a plurality of heat dissipation bodies, wherein the heat dissipation bodies are arranged on the supporting plate in an annular matrix mode, the leeward ends of the heat dissipation bodies are arranged towards the center direction of the supporting plate, a good heat collection effect can be achieved through the arrangement mode of the heat dissipation bodies, and when the heat collection structure is arranged above the inner container, the air guide structure can directly conduct heat dissipation operation on the heat collection structure, so that the inner container can be effectively cooled, and the effect of rapid pressure relief is achieved. Simultaneously, because heat collecting structure self area is great, can cover the top position of establishing at whole inner bag, consequently compare with the mode of air current direct action at the inner bag lateral wall among the prior art, the technical scheme of this application can increase heat transfer area and heat transfer effect effectively.

2. According to the heat collection structure provided by the invention, the heat radiation body and the support plate are integrally forged and formed. And the welding thermal resistance between the supporting plate and the heat radiation body is eliminated, the heat exchange efficiency is further increased, and the cooling time is shortened.

3. The heat collection structure provided by the invention comprises a heat radiation body, wherein the heat radiation body comprises: the water drop part is arranged at the windward end of the heat radiation body.

According to the fluid mechanics principle, the angle between the arc side of the water drop type structure and the incoming cooling air has a great influence on the heat exchange quantity of the heat dissipation body, and when the water drop type arc surface is in front of the cooling air, the cooling air flow can smoothly flow through all the surfaces of the fins. When the water drop type side faces the wind, the cooling air flow is blocked to a great extent. Therefore, by the arrangement mode, the effective contact area between the heat dissipation body and cooling air is remarkably increased, the heat exchange effect is effectively improved, and the cooling effect on the pressure cooker is further improved.

4. The heat collection structure provided by the invention comprises a heat radiation body and a furling part, wherein the heat radiation body comprises a water drop part and the furling part is connected with the water drop part.

Through foretell mode of setting for whole radiator self is streamlined setting, when improving heat transfer area effectively, reduces the windage of cooling air current self effectively, promotes the heat transfer ability of heat dissipation backup pad.

5. According to the pressure cooker provided by the invention, the cooker body is connected with the cover body assembly through the hinge shaft, and the position of the fan assembly corresponding to the hinge shaft is made of a flexible material.

By the arrangement mode, firstly, the air flow generated by the fan assembly can be ensured to act on the heat collecting structure to carry out cooling operation; meanwhile, the flexible material is arranged on the limiting air guide structure, normal uncovering of the cover body can be guaranteed, and meanwhile, after the cover body assembly is opened, due to the existence of the flexible material, normal opening of the cover body assembly can be guaranteed, so that the cover body assembly is not affected by the fan assembly.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is an exploded view of a pressure cooker according to the present invention;

FIG. 2 is a schematic structural diagram of a pressure cooker according to the present invention;

fig. 3 is a schematic structural view of the pot cover provided by the present invention;

fig. 4 is a schematic connection diagram of the wind guide structure and the fan assembly provided by the present invention;

FIG. 5 is a schematic structural view of a heat collecting structure according to the present invention;

FIG. 6 is a schematic structural diagram of a heat sink according to the present invention;

FIG. 7 is a schematic view of another shape of the heat sink provided by the present invention;

FIG. 8 is a schematic structural diagram of a heat sink provided by the present invention on a supporting plate;

fig. 9 shows the heat exchange performance of the cover assembly according to the present invention when the cover assembly is disposed at different intervals.

Description of reference numerals in the examples:

1. a pot body; 2. a heating assembly; 3. an inner pot; 4. an inner container; 5. a pot cover; 501. an exhaust valve; 502. a handle; 6. a heat collection structure; 61. a support plate; 62. a heat sink; 7. a wind guide structure; 71. an air outlet; 8. a fan assembly; 81. a housing; 82. a fan; 9. an air duct connecting pipe; 10. and a controller.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular 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 otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

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

Example 1

The present embodiment provides a heat collecting structure 6, as shown in fig. 1-9, comprising

A support plate 61;

the plurality of radiators 62 are arranged on the supporting plate, the radiators 62 are arranged on the supporting plate in an annular matrix, and the leeward ends of the radiators 62 face the center direction of the supporting plate.

Specifically, the supporting plate 61 itself is arranged in a circular shape, and a plurality of radiators 62 are arranged on the supporting plate 61. Meanwhile, the support plate can be supported by stainless steel. Meanwhile, the leeward end of the heating body 62 is an end facing the center direction of the support plate 61.

Meanwhile, the shape and material of the heat radiator 62 itself are not limited as long as the heat on the support plate can be transmitted. In this embodiment, the heat dissipation body 62 itself may be made of a metal material, such as stainless steel, red copper, etc. Meanwhile, the shape of the heat radiator 62 is not limited, and may be a regular shape or an irregular shape, and when a regular shape is adopted, the heat radiator 62 may be disposed in a cylindrical shape, or in a truncated cone shape, a diamond shape, a hexagon shape, or a date core shape.

In the present embodiment, the structure of the heat radiator 62 itself is not limited, and as shown in a, b, c, and d in fig. 7, it may be provided in a plurality of different structures. In this embodiment, the heat radiator 62 includes: a water drop portion provided at a windward end of the heat radiator 62. Specifically, the longitudinal section of the water drop portion itself is provided in a water drop shape.

Specifically, as shown in fig. 6, one end of the cross section of the heating body 62 in the longitudinal axis direction is provided in a droplet shape. According to the fluid mechanics principle, the angle between the arc side of the water drop type structure and the incoming cooling air has a great influence on the heat exchange quantity of the fins, and when the water drop type arc surface is in front of the cooling air, the cooling air can smoothly flow through all the surfaces of the fins. When the water drop type side faces the wind, the cooling air flow is blocked to a great extent. Therefore, by the arrangement mode, the effective contact area between the heat dissipation body 62 and the cooling air is remarkably increased, so that the heat exchange effect is effectively improved, and the cooling effect on the pressure cooker is further improved.

Further, in this embodiment, the heat radiator 62 further includes: and the furling parts of the plurality of heat radiators 62 are arranged towards the center direction of the supporting plate.

As shown in fig. 8, the support plate 61 is divided into four different regions i, ii, iii, and iv, and it can be seen that the heat radiator 62 in each region is disposed toward the center of the support plate 61.

Be connected with the portion of drawing in water droplet portion, through foretell setting mode for whole radiator 62 self is streamlined setting, when improving heat transfer area effectively, reduces the windage of cooling air current self effectively, promotes the heat transfer ability of heat dissipation backup pad.

Specifically, the shape of the closing portion itself is not limited, and the shape of the closing portion itself is gradually reduced, which may be arranged in a circular truncated cone shape. In this embodiment, as shown in fig. 6, the furling part is arranged in a conical shape, and correspondingly, the cross-sectional shape of the furling part itself is arranged in a triangular shape. Specifically, the diameter of the water drop part and the side length of the regular triangle are 4mm-16mm, and the height of the water drop part is 5mm-25mm, so that a better pressure relief speed can be obtained.

Further, as shown in fig. 5 and 8, in the present embodiment, the furled parts of the plurality of heating bodies 62 are disposed toward the center direction of the supporting plate. Specifically, as shown in fig. 8, the radiator 62 is divided into four independent regions i, ii, iii, and iv, and the tapered portion of the radiator 62 in each region faces the center direction of the coil.

The heat collecting structure provided by this embodiment does not limit the connection manner between the heat dissipating body 62 and the supporting plate 61, and the heat dissipating body 62 and the supporting plate may be processed in a split manner, for example, the heat dissipating body 62 and the supporting plate may be connected by welding, or a connecting hole may be formed in the supporting plate, and the heat dissipating body 62 is connected by stamping. In this embodiment, the heat dissipation body 62 and the support plate are integrally cast, and this arrangement can eliminate the welding thermal resistance between the support plate and the heat dissipation body 62, further increase the heat exchange efficiency, and shorten the cooling time.

In the present embodiment, the arrangement of the plurality of radiators 62 is not limited. The plurality of heat radiating bodies 62 may be arranged regularly or irregularly, as long as stable heat transfer can be achieved. As shown in fig. 5, in the present embodiment, the heat radiator 62 is disposed on the support plate in an annular matrix shape. Specifically, the heating bodies 62 are arranged in a plurality of concentrically arranged ring structures. Through the arrangement mode, the space of the support plate can be effectively utilized.

Further, the annular matrix comprises a plurality of radiator rings concentrically arranged, wherein the distance between every two adjacent radiator rings is R, the support plate is circularly arranged, the radius of the support plate is R, in the embodiment, R-R is L, and L is larger than or equal to 1.5mm and smaller than or equal to 8.5 mm. That is, the distance between two adjacent radiator rings is equal to the distance between two adjacent radiators on each radiator ring. Through the above arrangement, as can be seen from the content recorded in fig. 9, the ratio of the actual heat exchange amount to the target required heat exchange amount increases with the decrease of L, but according to the process feasibility, the minimum L is 1.5mm at present, and the optimal heat exchange effect can be obtained. When L is less than 1.5mm, the difficulty of processing the radiator ring will increase significantly. When L is greater than 1.5mm, the heat exchange amount will be gradually reduced, and the heat exchange efficiency will be low because the ratio of the actual heat exchange amount to the target required heat exchange amount will be reduced to 20% when the value of L is increased to 8.5mm, so that the limitation is that L is greater than or equal to 1.5mm and less than or equal to 8.5mm in this embodiment.

Example 2

The present embodiment provides a cover assembly, including: the cooker cover 5 is internally provided with a second accommodating cavity; the heat collecting structure 6 provided in embodiment 1 is disposed in the second receiving chamber.

In this embodiment, as shown in fig. 3, the cooker lid 5 is provided with an exhaust valve 501 and a handle 502 disposed on one side of the exhaust valve 501, and after the cooking operation is completed, the user can open the exhaust valve 501 by driving the handle 502, so as to perform pressure relief of the pressure cooker.

The cover assembly provided in embodiment 1, further comprising: the air guide structure 7 is arranged above the heat collection structure 6, an air outlet 71 is arranged on the air guide structure 7, and the air outlet corresponds to the support plate.

Specifically, the specific structure of the air guide structure 7 is not limited as long as the ventilation operation to the heat collecting structure 6 itself can be achieved. Through setting up wind-guiding structure 7, can introduce the external air current to collection hot-water bag structure 6 position, and then carry out cooling operation to collection hot-water bag structure 6.

Further, the air outlet of the air guiding structure 7 acts on the outer circumference of the heat collecting structure 6, and at this time, the air flowing out through the air guiding structure 7 flows from the outer diameter part to the inner diameter part of the heat collecting structure 6, thereby playing a role in accelerating heat exchange. Specifically, in order to realize this operation, a wind deflector is disposed at the air outlet of the wind guiding structure 7, and the outer edge of the wind deflector extends to the outer diameter of the heat collecting structure 6.

As another embodiment, the air outlet of the air guiding structure 7 is disposed corresponding to the outer edge of the heat collecting structure 6, so that the cold air flowing out from the air guiding structure 7 directly acts on the outer edge of the heat collecting structure 6. Specifically, the air outlet can set up to a plurality ofly, and a plurality of air outlets themselves can be the annular setting simultaneously.

The cover assembly provided in this embodiment further includes: and a fan 82 is arranged inside the fan assembly 8, and the airflow generated by the fan 82 is suitable for entering the air guiding structure 7 and being discharged through the air outlet 71.

Specifically, heat collecting structure 6 can directly absorb inner bag 4 and the heat of high temperature food material in inner bag 4, and air guide component sets up in heat collecting structure 6's top, corresponds the air outlet 71 that sets up air guide component in the position of relative heat collecting structure 6, is provided with fan subassembly 8 in air guide component, and after fan subassembly 8 starts, the air current will form in the wind channel and flow out and act on heat collecting structure 6 in air outlet 71 position. Through collecting structure 6, because its setting is in the top position of inner bag 4, can play good heat collection effect, simultaneously through setting up wind-guiding structure 7, wind-guiding structure 7 can directly carry out the radiating operation to collecting structure 6 to can dispel the heat to inner bag 4 effectively, and then play the effect of quick pressure release. Simultaneously, because heat collecting structure 6 self area is great, can cover and establish the top position at whole inner bag 4, consequently compare with the mode of air current direct action at inner bag 4 lateral wall among the prior art, the technical scheme of this application can increase heat transfer area and heat transfer effect effectively.

Example 3

The present embodiment provides a pressure cooker, as shown in fig. 1, including: the cooker body 1 is internally provided with a first accommodating cavity;

the heating component 2 is arranged at the bottom position of the first accommodating cavity;

in the present embodiment, the structure of the heating unit 2 itself is not limited as long as the heating operation can be realized. In this embodiment, the heating element itself is disposed in a manner of a wire spool and a magnetic strip.

The inner pot 3 is arranged above the heating component 2, and an inner container 4 is arranged in the inner pot 3;

specifically, heating element 2 sets up in the below of interior pot 3, and inner bag 4 sets up the top position at heating element 2, holds the edible material that needs to carry out the heating in inner bag 4, and after heating element 2 started, inner bag 4 generates heat under electromagnetic induction's effect to the realization is to the culinary art of edible material. Meanwhile, in order to start and stop the heating assembly 2 and adjust the heating power and the heating mode, a controller 10 is further arranged, and the controller 10 is in communication connection with a sensor inside the pot body or a button and the like, so that the heating assembly 2 is accurately controlled.

Further comprising: in embodiment 2, a cover assembly is provided and disposed on the cooker body 1, the supporting plate of the cover assembly is disposed above the inner pot 3, a fan assembly is disposed on the cover assembly, and the fan assembly 8 is disposed on the outer wall of the cooker body 1.

The pressure cooker provided by the embodiment, the fan assembly 8 comprises a shell 81, and is connected with the outer wall of the cooker body 1, a fan accommodating cavity is arranged inside the fan assembly 8, and the air guide structure is communicated with the shell 81.

As an embodiment, the fan assembly 8 may be connected to the wind guiding structure 7 in a horizontal or inclined manner, in which case the wind guiding structure 7 will extend toward the outside of the pressure cooker, and in which case the fan assembly 8 itself will form a similar suspended structure.

As another embodiment, as shown in fig. 1 and 2, the blower assembly 8 itself is connected with the pot body 1. Specifically, the fan assembly 8 comprises a shell 81 connected with the outer wall of the cooker body 1, and a fan accommodating cavity is arranged inside the fan assembly 8.

In the pressure cooker provided by this embodiment, the cooker body is connected with the cover body assembly through the hinge shaft, and the fan assembly 8 is made of a flexible material at a position corresponding to the hinge shaft. Specifically, as shown in fig. 4, the air duct connecting pipe 9 is arranged on the fan assembly 8, the air duct connecting pipe itself can be made of rubber or the like, and when the lid assembly is opened relatively, the air duct connecting pipe 9 itself is also bent, so that when the stable transmission of the airflow in the fan assembly 8 is ensured, adverse effects caused by the normal opening of the lid assembly due to the existence of the fan assembly 8 can be avoided.

The pressure cooker provided by the embodiment is tested, the pressure relief time reaches 7.7 minutes under the working condition of 105kPa and 3.2L of boiling water, and the pressure relief time of most pressure cookers in the prior art is about 30 minutes, so that the waiting time after the cooking of a user is finished can be greatly shortened through the structure provided by the embodiment.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims (10)

1. A heat collection structure (6), characterized in that it comprises:

a support plate;

the heat dissipation bodies (62) are arranged on the supporting plate, the heat dissipation bodies (62) are arranged on the supporting plate in an annular matrix mode, and the leeward ends of the heat dissipation bodies (62) face the center direction of the supporting plate.

2. The heat collecting structure as claimed in claim 1, wherein the heating body (62) includes: a water drop portion provided at a windward end of the heat radiating body (62).

3. The heat collecting structure as claimed in claim 2, wherein the heating body (62) further includes: and the furling parts of the plurality of heat radiators (62) are arranged towards the center direction of the supporting plate.

4. The heat collecting structure as claimed in any one of claims 1 to 3, wherein the heat radiating body (62) is integrally forged with the support plate.

5. The heat collecting structure as claimed in claim 1, wherein the cross-sectional shape of the heating body is one or more of an ellipse and a rectangle along the longitudinal axis direction of the heating body.

6. A heat collecting structure as claimed in any one of claims 1 to 3, wherein the annular matrix includes a plurality of concentrically arranged radiator rings, wherein the distance between two adjacent radiator rings is R, the support plate is arranged in a circular shape, the radius of the support plate is R, the radiator rings include a plurality of equidistantly arranged radiators, the linear distance between two adjacent radiators is L, wherein R-R is L, and L is greater than or equal to 1.5mm and less than or equal to 8.5 mm.

7. A cover assembly, comprising:

the cooker cover (5) is internally provided with a second accommodating cavity;

heat collecting structure (6) according to any one of claims 1 to 6, arranged in said second housing chamber.

8. The cover assembly of claim 7, further comprising: the air guide structure (7) is arranged above the heat collection structure (6), an air outlet (71) is formed in the air guide structure (7), and the air outlet corresponds to the support plate.

9. The cover assembly of claim 8, further comprising: the air guide structure comprises a fan assembly (8), wherein a fan (82) is arranged inside the fan assembly (8), and air flow generated by the fan (82) is suitable for entering the air guide structure (7) and being discharged through the air outlet (71).

10. A pressure cooker comprising:

the cooker body (1) is internally provided with a first accommodating cavity;

the heating assembly (2) is arranged at the bottom position of the first accommodating cavity;

the inner pot (3) is arranged above the heating component (2), and an inner container (4) is arranged in the inner pot (3);

it is characterized by also comprising:

the cover assembly of any of claims 7-9, disposed on the pot body (1), the supporting plate of the cover assembly being disposed above the inner pot (3), the cover assembly having a fan assembly disposed thereon, the fan assembly (8) being disposed on an outer wall of the pot body (1).

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