CN112385763A - Thawing box - Google Patents
Thawing box Download PDFInfo
- Publication number
- CN112385763A CN112385763A CN201910762132.0A CN201910762132A CN112385763A CN 112385763 A CN112385763 A CN 112385763A CN 201910762132 A CN201910762132 A CN 201910762132A CN 112385763 A CN112385763 A CN 112385763A
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- China
- Prior art keywords
- wall
- radio frequency
- space
- defrosting
- opening
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
- A23L3/36—Freezing; Subsequent thawing; Cooling
- A23L3/365—Thawing subsequent to freezing
Abstract
The invention discloses a thawing box, which comprises an inner wall, wherein a space enclosed by the inner wall comprises a thawing space and a radio frequency space which are oppositely arranged, and at least two radio frequency antennas are arranged in the radio frequency space; the electromagnetic shielding piece is arranged between the adjacent radio frequency antennas, the electromagnetic shielding piece divides the radio frequency space into a plurality of independent subspaces, and the upper edge of the electromagnetic shielding piece is not lower than that of any radio frequency antenna. The radio frequency antenna is placed in the unfreezing space, the radio frequency antennas are isolated from each other through the electromagnetic shielding piece, the situation that electromagnetic waves emitted by the radio frequency antenna are directly absorbed by other radio frequency antennas without passing through food is avoided, more electromagnetic waves enter the unfreezing space, food is unfrozen and heated, more electromagnetic waves capable of being absorbed by the food are generated, the unfreezing and heating speed is improved, and energy loss is reduced.
Description
Technical Field
The invention relates to a thawing box, in particular to a radio frequency thawing box.
Background
Unfreezing frozen food materials can be achieved through the mode of radio frequency heating, the radio frequency heating can avoid the problem that the traditional heating mode is slow in heating speed due to the fact that the traditional heating mode is heated from outside to inside and limited by the heat source temperature and the heat conduction characteristic of the food, the materials can be rapidly heated to the required temperature, and the quality of processed food can be greatly improved. Generally, a plurality of radio frequency antennas are arranged to emit electromagnetic waves, so that the thawing efficiency and the thawing effect are improved, but since the radio frequency antennas can emit the electromagnetic waves and absorb the electromagnetic waves, if the electromagnetic waves emitted between the antennas do not pass through food and are absorbed by other antennas, the absorption of the food on the electromagnetic waves can be reduced, the thawing efficiency is finally reduced, and energy is wasted.
Disclosure of Invention
To solve the problems of the prior art, an object of the present invention is to provide a thawing box which increases the absorption of electromagnetic waves by food.
In order to achieve one of the above objects, an embodiment of the present invention provides a thawing box, including an inner wall, a space enclosed by the inner wall includes a thawing space and a radio frequency space, which are oppositely disposed, and the thawing box further includes:
at least two radio frequency antennas disposed inside the radio frequency space;
the electromagnetic shielding part is arranged between the adjacent radio frequency antennas, the radio frequency space is divided into a plurality of independent subspaces by the electromagnetic shielding part, and the upper edge of the electromagnetic shielding part is not lower than that of any radio frequency antenna.
As a further improvement of an embodiment of the present invention, the inner wall includes a thawing wall and a radio frequency wall, the radio frequency wall encloses the radio frequency space with a first opening, and the thawing wall and the radio frequency wall are connected to the first opening.
As a further improvement of an embodiment of the present invention, the rf wall is formed by either side of the thawing wall being outwardly concave.
As a further improvement of an embodiment of the present invention, the rf wall includes a bottom wall disposed opposite to the first opening, and a side wall connected to the thawing wall, and the electromagnetic shield is perpendicular to the bottom wall and abuts against the side wall.
As a further improvement of an embodiment of the present invention, the radio frequency space is disposed at the bottom of the thawing space, and a bearing plate for separating the radio frequency space and the thawing space is horizontally disposed between the radio frequency space and the thawing space.
As a further improvement of an embodiment of the present invention, the electromagnetic shielding element abuts against a bottom surface of the carrier plate.
As a further improvement of an embodiment of the present invention, the frequency bands of the electromagnetic waves emitted by all the rf antennas are the same.
As a further improvement of an embodiment of the present invention, the thawing wall encloses a second opening, the thawing box further includes a door body, and a fitting portion connected to an edge of the second opening, and the door body includes a choke groove disposed opposite to the fitting portion.
As a further improvement of an embodiment of the present invention, the second opening is rectangular, the mating portion includes four mating walls respectively connected to the thawing walls, and a connecting wall connecting adjacent ones of the mating walls, each of the mating walls is inclined to the thawing wall, the mating walls and the connecting wall enclose a third opening, and an area of the third opening is larger than an area of the second opening.
As a further improvement of an embodiment of the present invention, a face of the choke groove opposite to the fitting portion is parallel to the fitting wall or the connecting wall.
Compared with the prior art, the invention has the following beneficial effects: the radio frequency antenna is placed in the unfreezing space, the radio frequency antennas are isolated from each other through the electromagnetic shielding piece, the situation that electromagnetic waves emitted by the radio frequency antenna are directly absorbed by other radio frequency antennas without passing through food is avoided, more electromagnetic waves enter the unfreezing space, food is unfrozen and heated, more electromagnetic waves capable of being absorbed by the food are generated, the unfreezing and heating speed is improved, and energy loss is reduced.
Drawings
FIG. 1 is a schematic diagram of the structure of a defrosting tank according to an embodiment of the invention;
FIG. 2 is a cross-sectional view of a defrosting tank according to an embodiment of the invention;
FIG. 3 is a longitudinal cross-sectional view of the defrosting tank of an embodiment of the present invention in the front-rear direction;
FIG. 4 is a schematic diagram of the configuration of the interior walls and mating portions of the defrosting tank according to an embodiment of the invention;
FIG. 5 is a longitudinal cross-sectional view in the front-rear direction of the inner wall and the mating portion of the defrosting tank according to the embodiment of the present invention;
FIG. 6 is a cross-sectional view of the interior wall and mating portion of a defrosting tank according to an embodiment of the invention;
FIG. 7 is a front view of a mating portion of a defrosting tank according to an embodiment of the present invention;
FIG. 8 is a schematic structural view of a door of the defrosting tank according to an embodiment of the invention;
wherein, 1, inner wall; 100. a thawing space; 200. a radio frequency space; 11. a radio frequency wall; 110. a second opening; 12. thawing the wall; 120. a first opening; 121. a bottom wall; 122. a side wall; 13. a carrier plate; 2. a radio frequency antenna; 3. an electromagnetic shield; 4. a door body; 41. a choke groove; 5. a mating portion; 50. a third opening; 51. a mating wall; 52. connecting the walls.
Detailed Description
The present invention will be described in detail below with reference to specific embodiments shown in the drawings. These embodiments are not intended to limit the present invention, and structural, methodological, or functional changes made by those skilled in the art according to these embodiments are included in the scope of the present invention.
An embodiment of the present invention provides a thawing box, which can be used for thawing and heating food. The box that unfreezes includes inner wall 1, and the space that inner wall 1 encloses includes relative unfreezing space 100 and the radio frequency space 200 that sets up, and unfreezes space 100 is used for placing the frozen object that waits to unfreeze, and the electromagnetic wave is released to the inside electromagnetic wave that gets into in the space 100 that unfreezes to the frozen object heating unfreezes.
As shown in fig. 1 to 3, the thawing space 100 has a second opening 110 that can be closed, and when it is necessary to thaw frozen objects, the frozen objects are put into the thawing space 100 through the second opening 110, and electromagnetic waves are emitted from the rf space 200 to heat and thaw the frozen objects.
To clearly express the position and direction described in the present embodiment, the second opening 110 of the thawing space 100 is defined as front, and the opposite direction is defined as back, the depth direction of the thawing space 100 can also be defined by the front-back direction, the vertical direction defining the front-back direction is the up-down direction, the horizontal direction is the left-right direction, when the thawing box is horizontally placed, the up-down direction can be parallel to the direction of gravity in the physical sense, and the horizontal direction is correspondingly parallel to the horizontal plane in the physical sense, so that food can be placed into the thawing space 100 through the second opening 110 from the horizontal front-back direction.
The thawing box comprises at least two radio frequency antennas 2 which are arranged inside a radio frequency space 200, the radio frequency antennas 2 are connected with a radio frequency power amplifier through radio frequency cables, the radio frequency antennas 2 emit electromagnetic waves in the radio frequency space 200, food is thawed and heated after absorbing energy of the electromagnetic waves, the heat absorbed by the food can be higher and more uniform by arranging the at least two radio frequency antennas 2, and the two radio frequency antennas 2 are arranged in the embodiment.
The thawing box further comprises an electromagnetic shielding part 3 which is arranged between the adjacent radio-frequency antennas 2, the electromagnetic shielding part 3 divides the radio-frequency space 200 into a plurality of independent subspaces, the upper edge of the electromagnetic shielding part 3 is not lower than the upper edge of any radio-frequency antenna 2, the upper edge in the embodiment refers to the side, closest to the thawing space 100, of the electromagnetic shielding part 3 or any radio-frequency antenna 2, the upper edge of the electromagnetic shielding part 3 is not lower than the upper edge of any radio-frequency antenna 2, namely the electromagnetic shielding part 3 is not higher than the radio-frequency antennas 2 in a plurality of local points, but the distance from any point, closest to the thawing space 100, of the electromagnetic shielding part 3 to the stimulating space is shorter than or equal to the radio-frequency antenna. In this embodiment, the electromagnetic shield 3 may be plate-shaped to form a shielding surface, and the radio frequency antennas 2 in the independent subspaces isolated by the electromagnetic shield 3 are electromagnetically isolated from each other in a direction parallel to the electromagnetic shield 3.
By placing the radio frequency antennas 2 in the radio frequency space 200 and isolating the radio frequency antennas 2 from each other through the electromagnetic shielding member 3, the electromagnetic waves emitted by the radio frequency antennas 2 are prevented from being directly absorbed by other radio frequency antennas 2 without passing through food; more electromagnetic waves enter the unfreezing space 100 to unfreeze and heat food, and the food can absorb more electromagnetic waves, so that the unfreezing and heating speed can be increased, and the energy loss is reduced.
Further, the inner wall 1 includes a thawing wall 12 and a rf wall 11, as shown in fig. 4 to 6, the rf wall 11 encloses an rf space 200 having a first opening 120, and the thawing wall 12 and the rf wall 11 are connected to the first opening 120.
The radio frequency wall 11 includes a bottom wall 121 disposed opposite to the first opening 120, and a side wall 122 connected to the thawing wall 12, the electromagnetic shield 3 is perpendicular to the bottom wall 121 and abuts against the side wall 122, in this embodiment, the side wall 122 and the bottom wall 121 enclose a rectangular cubic structure, the radio frequency space 200 enclosed inside is also a rectangular cube, and may also be other shapes such as a cylinder, of course, the bottom wall 121 is provided with a through hole for the radio frequency antenna 2 to pass through, the radio frequency antenna 2 is fixed on the bottom wall 121, and the electromagnetic shield 3 is fixed on the bottom wall 121 and the side wall 122, so that the lowest point of the radio frequency antennas 2 on both sides and other positions in the parallel direction cannot pass through the electromagnetic shield 3, and when the bottom wall 121 is a plane, the longest distance from the radio frequency antenna 2 to the bottom wall 121 may also be not greater than the longest distance from the electromagnetic shield 3 to the bottom wall 121.
The electromagnetic shield 3 may be a metal plate having an electromagnetic shielding function, the side walls 122 at both ends of the electromagnetic shield 3 are also made of a metal material, and the bottom plate connected to the bottom of the electromagnetic shield 3 is also made of a metal material, so that the bottom and the side surfaces of the single radio frequency antenna 2 are both covered by the electromagnetic shield 3, and electromagnetic waves can only be emitted to the thawing space 100, thereby increasing the amount of electromagnetic waves that can be absorbed by food.
The thawing space 100 and the rf space 200 enclosed by the inner wall 1 may be communicated with each other without a substantial boundary, or may be separated by a partition provided therebetween, the partition being configured to prevent a person from directly touching the rf antenna 2 in the rf space 200 through the thawing space 100, and the partition being configured to be made of a material that does not shield electromagnetic waves.
The connection of the radiofrequency wall 11 to the thawing wall 12 presents two configurations:
in one structure, the radio frequency wall 11 is formed by recessing either side of the thawing wall 12 outwards, in the process of manufacturing the inner wall 1, a thawing wall 12 is formed, one side of the thawing wall 12 extends outwards, and the radio frequency wall 11 is stretched out, or the radio frequency wall 11 and the thawing wall 12 are simultaneously manufactured on a workpiece, and the radio frequency wall 11 and the thawing wall 12 are manufactured in an integrated forming mode, so that the structure of the inner wall 1 is more complete without gaps.
In another structure, the radio frequency wall 11 is fixedly connected with the unfreezing wall 12 by splicing, welding, riveting and the like, and the radio frequency wall 11 and the unfreezing wall 12 can be made of the same or different materials.
The rf wall 11 and the defrosting wall 12 are made of electromagnetic shielding material such as metal to prevent electromagnetic leakage.
Further, the rf space 200 is disposed at the bottom of the thawing space 100, and a loading plate 13 horizontally disposed between the rf space 200 and the thawing space 100 for separating the two. The arrangement can enable the electromagnetic wave emitted by the radio frequency space 200 to be transmitted to the food in the thawing space 100 at the nearest distance, the longer the path is, the smaller the energy received by the object is, and the shorter the path is, the larger the energy of the electromagnetic wave can be received, so that the electromagnetic wave can be transmitted to the frozen object more closely, which is beneficial to improving the thawing and heating speed. The bearing plate 13 is made of a material which does not shield electromagnetism, such as glass, food to be thawed and heated is placed on the glass bearing plate 13, and electromagnetic waves below the glass can enter the position of the food through the glass; of course, if the rf space 200 is not disposed at the bottom but at the horizontal side or top of the thawing space 100, glass may be used as a partition.
In addition, the electromagnetic shielding part 3 abuts against the bottom surface of the bearing plate 13, theoretically, the higher the height of the electromagnetic shielding part 3 is, the better the height is, and the electromagnetic shielding part 3 is made as high as possible on the basis of meeting the mutual isolation in the parallel direction, in this embodiment, the electromagnetic shielding part 3 abuts against the bearing plate 13, namely, the upper edge of the electromagnetic shielding part 3 abuts against the bearing plate 13, and the electromagnetic shielding part 3 is made to be the highest height under the condition that the unfreezing space 100 and the radio frequency space 200 have separators, so that electromagnetic waves are prevented from directly entering the other radio frequency antenna 2 in the radio frequency space 200 without passing through food.
Further, the frequency bands of the electromagnetic waves emitted by all the radio frequency antennas 2 are the same, when two identical electromagnetic waves intersect in the thawing space 100, a standing wave is formed, the standing wave only generates vibration without energy transmission, food can be heated more quickly, the thawing speed is increased, and when the electromagnetic waves of the same frequency band are emitted by all the radio frequency antennas 2, the electromagnetic waves of the same frequency and wavelength and constant phase difference intersect to form a standing wave.
Furthermore, the second opening 110 is surrounded by the defrosting wall 12, the defrosting box further comprises a door body 4 and a matching part 5 connected with the edge of the second opening 110, the door body 4 is used for opening or closing the second opening 110, after the door body 4 is opened, food can be put into the defrosting space 100 through the second opening 110, and then the door body 4 is closed to start the radio frequency antenna 2 to emit electromagnetic waves to heat and defrost the food. The door body 4 includes a choke groove 41 provided opposite to the coupling portion 5, the choke groove 41 for preventing electromagnetic waves from leaking to the outside from a gap between the door body 4 and the coupling portion 5; when door body 4 is closed, door body 4 abuts against mating portion 5, and choke groove 41 is provided opposite mating portion 5.
As shown in fig. 4, 7 and 8, in the present embodiment, the second opening 110 is rectangular, the mating portion 5 includes four mating walls 51 connected to the thawing wall 12, respectively, and a connecting wall 52 connecting adjacent mating walls 51, each mating wall 51 is inclined to the thawing wall 12, the angle at which the mating portion 5 is inclined to the inner wall 1 may be 30 ° to 45 ° (the smallest acute angle where the extension directions of the planes meet), and the inclined mating wall 51 is provided, so that the path of electromagnetic waves propagating between the door body 4 and the mating portion 5 can be extended, theoretically, the smaller the gap between the door body 4 and the mating portion 5 is, the better the gap is, but complete bonding cannot be achieved for the mating, and therefore, on the basis of the existence of the gap, the propagation path of electromagnetic waves is extended to reduce or even eliminate leakage of electromagnetic waves; the coupling wall 51 and the connecting wall 52 enclose the third opening 50, and the area of the third opening 50 is larger than that of the second opening 110, so that the area of the third opening 50 is larger on the basis of the inclined coupling part 5, that is, the coupling wall 51 and the connecting wall 52 are opened outwards, thereby facilitating the food to be put into the thawing space 100.
The door body 4 is configured to be in a shape matched with the matching part 5, the shape similar to a trapezoidal table is buckled into the matching part 5, one surface of the choke groove 41 opposite to the matching part 5 is parallel to the matching wall 51 or the connecting wall 52, so that interference between a part of the area choke groove 41 and the matching part 5 is avoided, the effect of shielding electromagnetism is avoided because a part of the choke groove 41 is too close, and electromagnetic waves cannot be leaked to the outside through the inclined matching part 5 and the inclined choke groove 41.
The detailed description set forth above is merely a specific description of possible embodiments of the present invention and is not intended to limit the scope of the invention, which is intended to include within the scope of the invention equivalent embodiments or modifications that do not depart from the technical spirit of the present invention.
Claims (10)
1. The utility model provides a case thaws, includes the inner wall, its characterized in that, the space that the inner wall enclosed includes relative unfreezing space and the radio frequency space that sets up, the case that unfreezes still includes:
at least two radio frequency antennas disposed inside the radio frequency space;
the electromagnetic shielding part is arranged between the adjacent radio frequency antennas, the radio frequency space is divided into a plurality of independent subspaces by the electromagnetic shielding part, and the upper edge of the electromagnetic shielding part is not lower than that of any radio frequency antenna.
2. The defrosting tank of claim 1 wherein the inner wall comprises a defrosting wall and a radio frequency wall, the radio frequency wall enclosing the radio frequency space having a first opening, the defrosting wall and the radio frequency wall being connected at the first opening.
3. The defrosting tank of claim 2 wherein the radio frequency wall is formed by either side of the defrosting wall being recessed outwardly.
4. The defrosting tank of claim 2 wherein the radio frequency wall includes a bottom wall disposed opposite the first opening and a side wall connected to the defrosting wall, the electromagnetic shield being perpendicular to the bottom wall and abutting the side wall.
5. The thawing box of claim 2, wherein the rf space is disposed at the bottom of the thawing space, and a loading plate for separating the rf space and the thawing space is horizontally disposed between the rf space and the thawing space.
6. The defrosting tank of claim 5 wherein the electromagnetic shield abuts against the bottom surface of the carrier plate.
7. The defrosting tank of claim 1 wherein the frequency band of the electromagnetic waves emitted by all of the rf antennas is the same.
8. The defrosting tank of claim 2 wherein the defrosting wall encloses a second opening, the defrosting tank further comprising a door body and a mating portion connected to an edge of the second opening, the door body comprising a choke groove disposed opposite the mating portion.
9. The defrosting tank of claim 8 wherein the second opening is rectangular and the mating portion comprises four mating walls connected to the defrosting walls, respectively, and a connecting wall connecting adjacent ones of the mating walls, each mating wall being oblique to the defrosting walls, the mating walls and the connecting walls enclosing a third opening, the third opening having a larger area than the second opening.
10. The defrosting tank of claim 9 wherein a face of the choke groove opposite to the mating portion is parallel to the mating wall or the connecting wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910762132.0A CN112385763A (en) | 2019-08-19 | 2019-08-19 | Thawing box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910762132.0A CN112385763A (en) | 2019-08-19 | 2019-08-19 | Thawing box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112385763A true CN112385763A (en) | 2021-02-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910762132.0A Pending CN112385763A (en) | 2019-08-19 | 2019-08-19 | Thawing box |
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| Country | Link |
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| CN (1) | CN112385763A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050067412A1 (en) * | 2003-09-29 | 2005-03-31 | Samsung Electronics Co., Ltd. | Microwave oven |
| US20140202340A1 (en) * | 2011-07-15 | 2014-07-24 | Joseph Johan Maria Van Rens | Heat-treatment device comprising a shielded microwave-radiometry-antenna |
| CN105428799A (en) * | 2015-11-11 | 2016-03-23 | 威海北洋电气集团股份有限公司 | Radio-frequency antenna |
| CN106989555A (en) * | 2017-05-24 | 2017-07-28 | 合肥美菱股份有限公司 | A kind of refrigerator with defrosting function |
| WO2018223947A1 (en) * | 2017-06-06 | 2018-12-13 | 青岛海尔股份有限公司 | Refrigerator |
| CN109323522A (en) * | 2017-07-31 | 2019-02-12 | 青岛海尔智能技术研发有限公司 | Thawing apparatus and refrigerator with the thawing apparatus |
| CN109990535A (en) * | 2017-12-29 | 2019-07-09 | 青岛海尔股份有限公司 | Thawing apparatus and refrigerator with the thawing apparatus |
-
2019
- 2019-08-19 CN CN201910762132.0A patent/CN112385763A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050067412A1 (en) * | 2003-09-29 | 2005-03-31 | Samsung Electronics Co., Ltd. | Microwave oven |
| US20140202340A1 (en) * | 2011-07-15 | 2014-07-24 | Joseph Johan Maria Van Rens | Heat-treatment device comprising a shielded microwave-radiometry-antenna |
| CN105428799A (en) * | 2015-11-11 | 2016-03-23 | 威海北洋电气集团股份有限公司 | Radio-frequency antenna |
| CN106989555A (en) * | 2017-05-24 | 2017-07-28 | 合肥美菱股份有限公司 | A kind of refrigerator with defrosting function |
| WO2018223947A1 (en) * | 2017-06-06 | 2018-12-13 | 青岛海尔股份有限公司 | Refrigerator |
| CN109323522A (en) * | 2017-07-31 | 2019-02-12 | 青岛海尔智能技术研发有限公司 | Thawing apparatus and refrigerator with the thawing apparatus |
| CN109990535A (en) * | 2017-12-29 | 2019-07-09 | 青岛海尔股份有限公司 | Thawing apparatus and refrigerator with the thawing apparatus |
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