CN214892112U - Ultrasonic auxiliary processing device for low-temperature space and refrigerator - Google Patents
Ultrasonic auxiliary processing device for low-temperature space and refrigerator Download PDFInfo
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- CN214892112U CN214892112U CN202120660047.6U CN202120660047U CN214892112U CN 214892112 U CN214892112 U CN 214892112U CN 202120660047 U CN202120660047 U CN 202120660047U CN 214892112 U CN214892112 U CN 214892112U
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- 238000012545 processing Methods 0.000 title claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 55
- 235000013305 food Nutrition 0.000 claims abstract description 37
- 238000007710 freezing Methods 0.000 claims abstract description 33
- 239000007788 liquid Substances 0.000 claims abstract description 32
- 230000008014 freezing Effects 0.000 claims abstract description 30
- 239000002826 coolant Substances 0.000 claims abstract description 20
- 238000009434 installation Methods 0.000 claims abstract description 18
- 238000001816 cooling Methods 0.000 claims abstract description 17
- 239000011159 matrix material Substances 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims 1
- 238000005554 pickling Methods 0.000 abstract description 16
- 230000000694 effects Effects 0.000 abstract description 9
- 230000008901 benefit Effects 0.000 abstract description 4
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 238000005057 refrigeration Methods 0.000 description 6
- 239000013078 crystal Substances 0.000 description 4
- 238000002604 ultrasonography Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000011550 stock solution Substances 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 241000287828 Gallus gallus Species 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 235000013372 meat Nutrition 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000006911 nucleation Effects 0.000 description 2
- 238000010899 nucleation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 235000021022 fresh fruits Nutrition 0.000 description 1
- 239000013056 hazardous product Substances 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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- Devices That Are Associated With Refrigeration Equipment (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
Abstract
The utility model provides an ultrasonic auxiliary processing device and refrigerator for low temperature space. Wherein, supplementary processing apparatus of supersound is used for supplementary freezing and/or supplementary pickled food material, and it includes: a container for carrying food material; the liquid storage box is arranged on the periphery of the container, and an installation space is reserved between the liquid storage box and the container; and at least one ultrasonic generator disposed in the installation space; the liquid storage box is internally provided with a cooling cavity, and a cooling medium is filled in the cooling cavity. The utility model has the advantages that can avoid the heat that supersonic generator produced to cause the influence to self function, be favorable to improving the quality of freezing and/or the effect of pickling of eating the material.
Description
Technical Field
The utility model relates to a cold-stored refrigeration plant field especially relates to an ultrasonic auxiliary processing device and refrigerator for low temperature space.
Background
Currently, the evaluation of the storage performance of the refrigerator is not simple to prolong the storage time, and some users also demand the realization of certain auxiliary functions (such as freezing and preserving, pickling and the like).
However, the prior refrigerator generally relies on quick freezing technology to improve the freezing preservation effect of meat. However, in the quick-freezing scheme, a quick-freezing tray is generally required to be added, an ultrasonic generator is arranged at the bottom of the quick-freezing tray, and ultrasonic waves generated by the ultrasonic generator are utilized to assist in freezing food materials. Although the freezing speed of the food materials can be improved to a certain degree, the ultrasonic generator can generate heat in the working process, and the reverse effect is achieved on the freezing of the food materials.
In addition, for pickling food materials, the low-temperature environment of the refrigerator causes slow pickling speed, long-time pickling increases the waiting time of users, and the freshness of the food materials can be affected.
No effective solution for achieving the above-mentioned auxiliary functions has been proposed in the prior art.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an object of first aspect aims at overcoming at least one defect among the prior art, provides an supersound auxiliary processing device, and it can avoid the heat that supersonic generator produced to cause the influence to self function, is favorable to improving the speed of freezing and/or the effect of pickling of edible material.
The utility model discloses a further purpose of first aspect makes and eats the material evenly to freeze, improves the quality of freezing of eating the material.
The utility model discloses the purpose of second aspect is to provide a refrigerator.
According to the utility model discloses an aspect, the utility model provides an ultrasonic auxiliary processing device for low temperature space, ultrasonic auxiliary processing device are used for supplementary freezing and/or supplementary pickling to eat the material, and it includes:
a container for carrying food material;
the liquid storage box is arranged on the periphery of the container, and an installation space is reserved between the liquid storage box and the container; and
at least one ultrasonic generator disposed in the installation space;
the liquid storage box is internally limited with a cooling cavity, and a cooling medium is filled in the cooling cavity.
Further, the liquid storage box is arranged below the container;
one side of the ultrasonic generator is attached to the lower bottom surface of the container, and the other side of the ultrasonic generator is attached to the upper surface of the liquid storage box.
Further, the liquid storage box comprises an upper cover and a base, wherein
The upper cover comprises a top plate and a skirt part extending downwards from the periphery of the top plate,
the base comprises a bottom plate and a fence part extending upwards from the periphery of the bottom plate,
the shape of the surrounding part is matched with that of the skirt part, so that the upper cover is hermetically buckled or covered on the base, and a cooling cavity is formed between the upper cover and the base.
Further, supersonic generator is provided with a plurality ofly, and a plurality of supersonic generator all are fixed to the lower bottom surface of container, and personally submit the matrix at the lower bottom of container and arrange.
Furthermore, the upper surfaces of the areas corresponding to the liquid storage box and the ultrasonic generator are both downwards sunken to form an installation space, and the ultrasonic generator is correspondingly embedded in the installation space so that the lower bottom surface of the container is abutted to the upper surface of the liquid storage box.
Further, the cooling medium is disposed such that the medium surface thereof exceeds at least the bottom end of the installation space.
Further, the ultrasonic generator is an ultrasonic vibrator or an ultrasonic wafer.
Further, the frequency of the ultrasonic generator is 20 kHz-60 kHz.
Further, the sound intensity of the lower bottom surface of the container was 0.05W/cm2~2W/cm2。
According to the utility model discloses a second aspect, the utility model provides a refrigerator, its inside storage room of having injecing has, is provided with arbitrary ultrasonic auxiliary treatment device in the aforesaid between the indoor between the storing.
The utility model discloses an ultrasonic auxiliary processing device when being used for supplementary freezing to eat the material, because the periphery of container is provided with the stock solution box, the inside of stock solution box is injectd and is had the cooling cavity to cooling medium is equipped with in the cooling cavity content. Therefore, the heat generated by the ultrasonic generator can be absorbed by the cooling medium in time, the heat transfer to the container is reduced as much as possible, and the freezing speed of the food material is improved. When being used for supplementary pickling edible material, the ultrasonic wave that supersonic generator produced makes edible material take place small vibration, makes the pickling material comparatively abundant, dip in edible material fast at the continuous vibration in-process, has improved the speed of pickling and the effect of pickling of edible material. In addition, the cooling medium can absorb the heat generated by the ultrasonic generator in time and can also cool the ultrasonic generator, thereby preventing the ultrasonic generator from being damaged due to overhigh local temperature and prolonging the service life of the ultrasonic generator.
Further, supersonic generator is provided with a plurality ofly, can show the freezing rate that improves edible material through a plurality of supersonic generator simultaneous action to a plurality of supersonic generator are in the matrix arrangement at the lower bottom surface of container, so, can make edible material evenly freeze, improve the freezing quality of edible material.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a schematic view of an overall structure of a refrigerator according to an embodiment of the present invention;
fig. 2 is an exploded view of an ultrasound-assisted treatment device according to an embodiment of the present invention;
fig. 3 is a top view of an ultrasound-assisted treatment device according to an embodiment of the present invention;
fig. 4 is a cross-sectional view of an ultrasound-assisted treatment device according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
It should be understood that in the description of the present embodiment, the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Fig. 1 is a schematic view of an overall structure of a refrigerator according to an embodiment of the present invention. Referring to fig. 1, a refrigerator may include a cabinet 10, and a plurality of storage compartments defined inside the cabinet 10. Quantity, function, the overall arrangement mode of storing compartment can dispose according to the demand, the utility model discloses do not restrict to this. Preferably, the storage chamber can be divided into three layers, namely an upper refrigeration chamber 20, a lower refrigeration chamber 30 and a middle ultrasonic auxiliary treatment chamber 40, wherein the upper refrigeration chamber is used as a whole, the lower refrigeration chamber is used as two freezing chambers 30, the middle ultrasonic auxiliary treatment chamber 40 is used as two ultrasonic auxiliary treatment chambers, and an ultrasonic auxiliary treatment device is arranged in each ultrasonic auxiliary treatment chamber 40.
It should be noted that the inside of the ultrasonic auxiliary treatment chamber 40 is a low-temperature space, and the temperature can be configured to be 0 ℃ or higher (refrigeration temperature), and is used for storing fresh fruits and vegetables or food materials stored for a short time. In this embodiment, the ultrasonic auxiliary processing chamber 40 can be used for placing the pickled food material (i.e. the food material with the surface coated with the pickling material or soaked in the pickling material), and the pickling speed is increased by the ultrasonic auxiliary processing device. At this time, the ultrasonic auxiliary processing device serves as an auxiliary curing device for the food material.
In addition, the temperature in the ultrasonic auxiliary treatment chamber 40 may also be configured to be-8 ℃ to-25 ℃ (i.e. a freezing temperature, and the specific temperature range may be adjusted as required) for freezing meat or other food materials stored for a long time, and the freezing quality is improved by the ultrasonic auxiliary treatment device. At this time, the ultrasonic auxiliary processing device serves as an auxiliary freezing device for the food material. The ultrasonic auxiliary treatment device will be described in detail below with reference to the accompanying drawings.
Fig. 2 is an exploded view of an ultrasound-assisted treatment device according to an embodiment of the present invention. Referring to fig. 2 in conjunction with fig. 3-4, the ultrasonically assisted treatment device may include a container 50, a reservoir 60, and an ultrasonic generator 70. Wherein the container 50 is for carrying food material. The liquid storage box 60 is arranged at the periphery of the container 50, a cooling cavity is defined in the liquid storage box 60, a cooling medium 80 is contained in the cooling cavity, and an installation space 63 is reserved between the liquid storage box 60 and the container 50. The ultrasonic generator 70 may be one or more, and is disposed in the installation space 63 to generate an ultrasonic signal and apply at least a portion of the ultrasonic signal to the food material.
The utility model discloses an ultrasonic auxiliary processing device, because its supersonic generator 70 can produce the heat in the course of the work, through containing cooling medium 80 in the cooling cavity of stock solution box 60, utilize cooling medium 80 in time to absorb the heat that supersonic generator 70 produced, reduce the heat as far as possible and transmit to container 50, and cooling medium 80 absorbs the heat that supersonic generator 70 produced, can also prevent that supersonic generator 70 from taking place to damage because of local high temperature, supersonic generator 70's life has been improved to a certain extent.
In practical application, when the ultrasonic auxiliary processing device is used as an auxiliary pickling device for food materials, the ultrasonic waves generated by the ultrasonic generator 70 can act on the food materials, so that the food materials are slightly vibrated, and the pickling materials can be sufficiently and rapidly immersed into the food materials in the continuous vibration process. The inventor tests and determines that for example, the Orleans chicken wings coated with the curing material are placed in a common refrigerating chamber for curing, the curing time is about 2 to 3 hours, and the time for placing the Orleans chicken wings in the ultrasonic auxiliary freezing chamber 40 of the utility model is only 20 to 30 minutes, so that the curing time is greatly shortened, and the curing effect is better.
When the ultrasonic auxiliary treatment device is used as an auxiliary freezing device for food materials, the food materials are quickly frozen by adopting an ultrasonic technology, ultrasonic waves generated by the ultrasonic generator 70 are applied to the food materials, so that the effect of strengthening heat transfer can be achieved, the formation of crystal nuclei can be promoted, the nucleation temperature of water in the food materials can be changed, the supercooling degree of the food materials is reduced, and the quick nucleation of ice crystals is promoted. And the ultrasonic wave can also play a role in crushing larger ice crystals to form small and uniform ice crystals, so that the damage to cells is reduced, and the freshness of food materials is ensured.
In a preferred embodiment, the reservoir 60 may be disposed below the container 50, and the ultrasonic generator 70 may have one side attached to a lower bottom surface of the container 50 and the other side attached to an upper surface of the reservoir 60. Thus, the ultrasonic generator 70 can be in thermal contact with the liquid storage box 60, the cooling medium 80 can absorb heat generated by the ultrasonic generator 70 more quickly, and the heat dissipation effect is improved.
In other embodiments, in order to save the bottom space and maximize the use of the space, the liquid storage box 60 may be disposed on one side of the container 50, and accordingly, the ultrasonic generator 70 is fixed on one side of the container 50 facing the liquid storage box 60.
In an alternative embodiment, the reservoir 60 includes at least a cover 61 and a base 62. The upper cover 61 includes a top plate 611 and a skirt portion 612 extending downward from the periphery of the top plate 611, the base 62 includes a bottom plate 621 and a surrounding portion 622 extending upward from the periphery of the bottom plate 621, and the skirt portion 612 has a shape adapted to the shape of the surrounding portion 622, so that the upper cover 61 can be tightly fastened or covered on the base 62, and the cooling cavity is formed between the upper cover 61 and the base 62.
In this embodiment, the cooling medium 80 may be a mixed solution, and the specific heat capacity thereof may be between 1KJ/(kg · K) and 5KJ/(kg · K), and in addition, it is not a hazardous material, has no flammability, good safety, non-toxicity, and harmless, and meets the standard requirements of the related additive law and FDA (food and drug administration).
In an alternative embodiment, the ultrasonic generators 70 may be provided in plurality, and the plurality of ultrasonic generators 70 are fixed to the lower bottom surface of the container 50 and arranged in a matrix pattern on the lower bottom surface of the container 50. For example, the plurality of ultrasonic generators 70 are divided into two groups of the same number, wherein one group of the ultrasonic generators 70 is arranged at equal intervals in the length direction of the container 50 in the front region of the lower bottom surface of the container 50, and the other group of the ultrasonic generators 70 is arranged at equal intervals in the length direction of the container 50 in the rear region of the lower bottom surface of the container 50. Therefore, the freezing speed of the food materials can be improved by the plurality of ultrasonic generators 70, and the plurality of ultrasonic generators 70 are uniformly distributed, so that the freezing uniformity of the food materials can be improved.
Considering that the entire weight of the container 50 is actually applied to the ultrasonic generator 70 when the liquid storage box 60 is disposed below the container 50, in order to avoid damage to the ultrasonic generator 70, the installation space 63 may be formed by downwardly recessing the upper surfaces of the regions of the liquid storage box 60 corresponding to the ultrasonic generator 70, which corresponds to an installation groove, and when the container 50 is placed on the liquid storage box 60, the ultrasonic generator 70 is correspondingly embedded in the installation space 63, so that the lower bottom surface of the container 50 abuts against the upper surface of the liquid storage box 60, and the container 50 is supported by the liquid storage box 60. And the ultrasonic generator 70 is positioned in the installation space 63, preventing it from being directly exposed to the external environment, and enabling less damage to the ultrasonic generator 70.
Further, when the cooling medium 80 is injected into the cooling cavity, it is ensured that the medium surface of the cooling medium 80 at least exceeds the bottom end of the mounting space 63, so that the ultrasonic generator 70 can be in better thermal contact with the cooling medium 80, and the heat dissipation efficiency of the ultrasonic generator 70 is improved.
In this embodiment, the ultrasonic generator 70 may be an ultrasonic vibrator or an ultrasonic wafer, and is fixed to the lower bottom surface of the container 50 by bonding.
The frequency of the ultrasonic generator 70 is preferably 20 to 60 kHZ. For example, the ultrasonic wave at the frequency range of 30Khz, 40Khz and 50Khz has strong penetrating power, so that the freezing rate of the food material can be improved, and the internal and external temperatures of the food material are uniform.
In this embodiment, the sound intensity at which the ultrasonic waves are transmitted to the lower bottom surface of the container 50 can be controlled to 0.05W/cm2~2W/cm2So that the ultrasonic generator 70 can achieve a better freezing effect on the premise of lower energy consumption.
According to the utility model discloses an arbitrary optional embodiment or the combination of a plurality of optional embodiments, the embodiment of the utility model provides a can reach following technological effect:
the ultrasonic auxiliary treatment device of the present invention has the liquid storage box 60 disposed on the periphery of the container 50, and the liquid storage box 60 is defined with a cooling cavity, and the cooling cavity is filled with the cooling medium 80. Therefore, the heat generated by the ultrasonic generator 70 can be absorbed by the cooling medium 80 in time, and the heat transfer to the container 50 is reduced as much as possible, so as not to affect the freezing rate of the food material. In addition, the cooling medium 80 can absorb the heat generated by the ultrasonic generator 70 in time, and can also cool the ultrasonic generator 70, thereby preventing the ultrasonic generator 70 from being damaged due to overhigh local temperature and prolonging the service life of the ultrasonic generator 70.
Further, the ultrasonic generators 70 are provided in a plurality, the freezing speed of the food materials can be remarkably improved by simultaneously acting the ultrasonic generators 70, and the ultrasonic generators 70 are arranged in a matrix form at the lower bottom surface of the container 50, so that the food materials can be uniformly frozen, and the freezing quality of the food materials is improved.
It will be appreciated by those of skill in the art that although some embodiments described herein include some but not other features included in other embodiments, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, any of the embodiments claimed in the claims can be used in any combination.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been shown and described in detail herein, many other variations and modifications can be made, consistent with the principles of the invention, which are directly determined or derived from the disclosure herein, without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be understood and interpreted to cover all such other variations or modifications.
Claims (10)
1. An ultrasonic auxiliary processing device for a low-temperature space, the ultrasonic auxiliary processing device being used for assisting freezing and/or curing of food materials, characterized by comprising:
a container for carrying food material;
the liquid storage box is arranged on the periphery of the container, and an installation space is reserved between the liquid storage box and the container; and
at least one ultrasonic generator disposed in the installation space;
the liquid storage box is internally provided with a cooling cavity, and a cooling medium is filled in the cooling cavity.
2. The ultrasonic auxiliary treatment device according to claim 1,
the liquid storage box is arranged below the container;
one side of the ultrasonic generator is attached to the lower bottom surface of the container, and the other side of the ultrasonic generator is attached to the upper surface of the liquid storage box.
3. The ultrasonic auxiliary treatment device according to claim 2,
the liquid storage box comprises an upper cover and a base, wherein
The upper cover includes a top plate and a skirt portion extending downward from a periphery of the top plate,
the base comprises a bottom plate and a fence part extending upwards from the periphery of the bottom plate,
the shape of the surrounding baffle part is matched with that of the skirt part, so that the upper cover is buckled or covered on the base in a sealing way, and the cooling cavity is formed between the upper cover and the base.
4. The ultrasonic auxiliary treatment device according to claim 2,
the ultrasonic generator is provided with a plurality of, and is a plurality of ultrasonic generator all fixes to the lower bottom surface of container, and be in the lower bottom surface of container personally submits the matrix and arranges.
5. The ultrasonic auxiliary treatment device according to claim 2,
the upper surfaces of the liquid storage box and the corresponding area of the ultrasonic generator are both downwards sunken to form the installation space, and the ultrasonic generator is correspondingly embedded in the installation space so that the lower bottom surface of the container is abutted to the upper surface of the liquid storage box.
6. The ultrasonic auxiliary treatment device according to claim 5,
the cooling medium is disposed so that its medium surface exceeds at least the bottom end of the installation space.
7. The ultrasonic auxiliary treatment device according to claim 1,
the ultrasonic generator is an ultrasonic vibrator or an ultrasonic wafer.
8. The ultrasonic auxiliary treatment device according to claim 1,
the frequency of the ultrasonic generator is 20 kHz-60 kHz.
9. The ultrasonic auxiliary treatment device according to claim 1,
the sound intensity of the lower bottom surface of the container is 0.05W/cm2~2W/cm2。
10. A refrigerator, the interior of which is limited with a storage chamber, is characterized in that,
the ultrasonic auxiliary treatment device as claimed in any one of claims 1 to 9 is arranged in the storage chamber.
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CN202120660047.6U CN214892112U (en) | 2021-03-31 | 2021-03-31 | Ultrasonic auxiliary processing device for low-temperature space and refrigerator |
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CN202120660047.6U CN214892112U (en) | 2021-03-31 | 2021-03-31 | Ultrasonic auxiliary processing device for low-temperature space and refrigerator |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2023093326A1 (en) * | 2021-11-29 | 2023-06-01 | 青岛海尔电冰箱有限公司 | Refrigerator and ultrasonic treatment device thereof |
WO2023185612A1 (en) * | 2022-03-31 | 2023-10-05 | 青岛海尔电冰箱有限公司 | Refrigerator and ultrasonic processing device thereof |
WO2023185610A1 (en) * | 2022-03-31 | 2023-10-05 | 青岛海尔电冰箱有限公司 | Refrigerator and ultrasonic processing apparatus thereof |
-
2021
- 2021-03-31 CN CN202120660047.6U patent/CN214892112U/en active Active
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2023093326A1 (en) * | 2021-11-29 | 2023-06-01 | 青岛海尔电冰箱有限公司 | Refrigerator and ultrasonic treatment device thereof |
WO2023185612A1 (en) * | 2022-03-31 | 2023-10-05 | 青岛海尔电冰箱有限公司 | Refrigerator and ultrasonic processing device thereof |
WO2023185610A1 (en) * | 2022-03-31 | 2023-10-05 | 青岛海尔电冰箱有限公司 | Refrigerator and ultrasonic processing apparatus thereof |
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