CN212409196U

CN212409196U - Freshness retaining container and refrigeration equipment

Info

Publication number: CN212409196U
Application number: CN202021258904.1U
Authority: CN
Inventors: 伍志刚; 刘丹; 陆啸天
Original assignee: Hefei Hualing Co Ltd; Midea Group Co Ltd; Hefei Midea Refrigerator Co Ltd
Current assignee: Hefei Hualing Co Ltd; Midea Group Co Ltd; Hefei Midea Refrigerator Co Ltd
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2021-01-26
Anticipated expiration: 2030-06-30

Abstract

The utility model discloses a fresh-keeping container and refrigeration plant, fresh-keeping container includes: a container body defining a receiving cavity; the magnetic part is arranged on the container body to generate a magnetic field in the accommodating cavity, wherein the container body is at least made of negative ion powder to release negative ions in the accommodating cavity. According to the utility model discloses fresh-keeping container, anion distribution is in whole space that holds the chamber, can full play bactericidal action and reduce the ethylene production volume of fruit vegetables, the programmed ageing death of fruit vegetables can be suppressed in magnetic field, keep its fresh state, through magnetic part and anion powder synergism, polyphenol oxidase's activity has been reduced, the fresh-keeping cycle has been prolonged greatly, and show the loss that reduces moisture and nutrient substance, and under the circumstances of guaranteeing fresh-keeping effect, the magnetic part can reduce the quantity of anion powder, thereby do not reduce container body's structural strength isocratic.

Description

Freshness retaining container and refrigeration equipment

Technical Field

The utility model relates to a refrigeration plant technical field, more specifically relates to a fresh-keeping container and refrigeration plant.

Background

The fruit and vegetable box realizes fresh-keeping mainly through humidity control technology, and the key point is to control the sealing degree of the fresh-keeping box, and high humidity is favorable for fresh-keeping of fruits and vegetables. However, besides humidity, the control technology has a limited preservation effect due to many factors affecting the preservation of fruits and vegetables, such as the microbial quantity and enzyme activity in fruits and vegetables.

In some related technologies, the negative ion fresh keeping is realized by arranging the negative ion generating device, so that the occupied space is large, and the use of the fresh keeping box is influenced; in other related technologies, magnetic preservation is realized by arranging an electromagnetic device, the device is complicated and inconvenient to use, and the preservation effect of a single preservation technology on food is not obvious.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the present invention is to provide a preservation container, which greatly prolongs the preservation period.

The utility model discloses still provide a refrigeration plant who has above-mentioned fresh-keeping container.

According to the utility model discloses fresh-keeping container, include: a container body defining a receiving cavity; the magnetic part is arranged on the container body to generate a magnetic field in the accommodating cavity, wherein the container body is at least made of negative ion powder to release negative ions in the accommodating cavity.

According to the utility model discloses fresh-keeping container, the anion of vessel's anion powder release distributes in the whole space that holds the chamber, can full play bactericidal action and reduce the ethylene formation volume of fruit vegetables, the magnetic field that the magnetic part produced can restrain the programmed aging death of fruit vegetables, keep its fresh state, anion powder synergism through magnetic part and vessel, polyphenol oxidase's activity has been reduced, the fresh-keeping cycle has been prolonged greatly, and show the loss that reduces moisture and nutrient substance, furthermore, magnetic part and anion powder do not occupy the space that holds the chamber, user's use experience has been improved, and under the condition of guaranteeing fresh-keeping effect, the magnetic part can reduce the quantity of anion powder, thereby do not reduce vessel's structural strength isotacticity.

In addition, the preservation container according to the above embodiment of the present invention may further have the following additional technical features:

according to some embodiments of the present invention, the fresh keeping container comprises a container body and at least one wall made of negative ion powder and a polymer material.

According to some embodiments of the invention, each wall of the container body is made of at least the negative ion powder.

According to some embodiments of the invention, the negative ion powder comprises tourmaline powder and rare earth elements.

According to some embodiments of the invention, the container body is formed as a drawer structure and comprises: the box body limits an installation space, and a guide part is arranged on the wall of the installation space; fresh-keeping drawer, fresh-keeping drawer be equipped with guide part sliding fit's direction cooperation portion, so that fresh-keeping drawer cooperation with drawable is in the installation space, wherein, the box and/or fresh-keeping drawer is by at least the anion powder is made, fresh-keeping drawer inject hold the chamber, the magnetic part install in the box and/or fresh-keeping drawer.

According to some embodiments of the present invention, one of the guide portion and the guide fitting portion is a rail groove and the other is a guide convex portion, and the magnetic member is embedded in a groove wall of the rail groove.

According to some embodiments of the utility model, the wall of installation space and/or the fresh-keeping drawer is equipped with the draw-in groove, the draw-in groove with the shape adaptation of magnetic part, the magnetic part embedding in the draw-in groove.

According to some embodiments of the present invention, the number of the magnetic members is plural, wherein at least two of the magnetic members are respectively disposed on two side walls of the preservation drawer opposite to each other; or at least two magnetic pieces are respectively arranged on two walls of the installation space, which are opposite to each other; or at least two magnetic pieces are respectively arranged on the top wall of the mounting space and the bottom wall of the fresh-keeping drawer.

According to some embodiments of the invention, the magnetic member is an anionic permanent magnet.

According to some embodiments of the invention, the magnetic field strength of the magnetic member is between 100mT and 500 mT.

According to the utility model discloses refrigeration plant includes according to the utility model discloses fresh-keeping container of embodiment.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of a freshness retaining container according to a first embodiment of the present invention;

FIG. 2 is a schematic structural view of a freshness retaining container according to a second embodiment of the present invention;

fig. 3 is a schematic structural view of a freshness retaining container according to a third embodiment of the present invention.

Reference numerals:

a freshness retaining container 100; a refrigeration device 200; a shelf 210;

a container body 10; a housing chamber 101; a case 11; an installation space 111; a preservation drawer 12; a guide portion 13; a guide fitting portion 14;

the magnetic member 20.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, "a first feature" or "a second feature" may include one or more of the features, and "a plurality" means two or more, and the first feature may be "on" or "under" the second feature, and may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature therebetween, and the first feature being "on", "above" and "above" the second feature may include the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is higher in level than the second feature.

A freshness retaining container 100 according to an embodiment of the present invention is described below with reference to the accompanying drawings.

Referring to fig. 1 to 3, a freshness retaining container 100 according to an embodiment of the present invention may include: a container body 10 and a magnetic member 20.

Specifically, the container body 10 defines an accommodating cavity 101, and the accommodating cavity 101 can be used for accommodating food materials such as fruits and vegetables. The magnetic member 20 is provided to the container body 10 to generate a magnetic field in the receiving chamber 101. Wherein the container body 10 is made of at least negative ion powder to release negative ions in the accommodating chamber 101.

The magnetic field generated by the magnetic part 20 in the accommodating cavity 101 can generate a certain effect on the micro magnetic field existing in the fruit and vegetable bodies, so that the action mechanism of cell membranes of the fruit and vegetable is influenced, the distribution of electrodes of the fruit and vegetable bodies is further influenced, the programmed cell death and aging process is reduced, and the fruit and vegetable fresh-keeping effect is achieved, because the magnetic field has a certain inhibiting effect on oxidase and peroxidase. The magnetic field can inhibit hydrolase, oxidase, etc. in fruits and vegetables, so as to prevent chlorophyll from converting into pheophytin and polysaccharide, etc., so that the magnetic field also has certain effect on preventing hardness, browning and withering of fruits and vegetables. In addition, the magnetic field is not influenced by the spatial position, for example, even if the food is covered with the packaging bag, the magnetic field can still play a role in keeping the food in the packaging bag fresh through the radiation effect of the magnetic field.

Further, the negative ions generated in the container body 10 can sufficiently contact the food material in the housing chamber 101. The negative ions in the air can easily adsorb several to more than ten neutral molecules or atoms around the negative ions to form charged small molecular groups called small ions. Charges with different properties seek a balance. These ion groups can collide with the spore, infectious microbes and odor molecules of bacteria in the air to generate an extremely active hydroxyl (OH) functional group, and the OH functional group further abstracts hydrogen (H) atoms from harmful substances to start an oxidation reaction, thereby achieving the deodorization function, and simultaneously, the ion groups can inhibit the reproduction of the bacteria by decomposing the cell membranes of the bacteria. The negative ions make epithelial cells carry negative charges, enhance the repulsion force to ions with the same charges, and make viruses lose the attack capability to the cells. The negative ions have high activity and strong redox effect, can destroy the activity of cell membranes of bacteria or active enzymes of cell protoplasm, and mainly play the roles of antibiosis and sterilization in the preservation of fruits and vegetables. It can also break down endogenous ethylene concentrations, purify enzyme activity, reduce respiratory intensity, and thereby slow down the conversion of nutrients during storage. The negative ions can inhibit the activity of enzyme in the fruit metabolism process and reduce the generation amount of ethylene with ripening acceleration effect in the fruit.

Therefore, the utility model discloses a fresh-keeping and the fresh-keeping complex use of magnetism of anion, the anion mainly has bactericidal effect, and the magnetic field is showing the inhibitory action of enzymatic activity, and the two is compound can effectively prolong fresh-keeping cycle. And, adopt the mode that anion powder produced the anion, can improve anion concentration, thereby improve fresh-keeping effect, and do not occupy the space that holds chamber 101, utilize anion powder and the mode of magnetic part 20 synergism, not only make fresh-keeping effect perfect, can prolong fresh-keeping cycle more than 7 days, still be favorable to reducing the proportion of making the required anion powder of body that holds, thereby under the circumstances of guaranteeing fresh-keeping effect, do not influence the performance such as structural strength who holds the body, more be fit for in-service use.

It should be noted that, in the embodiment of the present invention, the specific structure of the container body 10 can be flexibly set according to actual conditions. For example, the container body 10 may be an open-top box, and at least one of the bottom side wall, the left side wall, the right side wall, the front side wall, and the rear side wall of the box is made of at least negative ion powder; or the container body 10 comprises a box body and a cover body with an opening at the top, at least one of the bottom side wall, the left side wall, the right side wall, the front side wall, the rear side wall and the cover body of the box body is made of negative ion powder; or the container body 10 includes a drawer with an open top and a box body with an open front for accommodating the drawer, and at least one of the bottom, left, right, front, and rear walls of the drawer and the bottom, top, left, right, and front walls of the box body is made of at least negative ion powder. It is within the scope of the present invention, and it will be understood by those skilled in the art that the container body 10 having other structures may be made of at least negative ion powder according to the above description.

The beneficial effects of the embodiments of the present invention are described below by comparing the embodiments of the present invention and the comparative examples.

Example (b): a freshness retaining container 100 according to an embodiment of the present invention;

comparative example 1: a preservation box only adopting a magnetic preservation mode;

comparative example 2: the preservation box only adopts an anion preservation mode.

Spinach, litchi and apples are respectively selected as fruit and vegetable representatives, and the fresh-keeping effect of the embodiment, the comparative example 1 and the comparative example 2 is detected by three detection modes of sense, water loss rate and vitamin C content.

Wherein, the sensory test results are shown in table 1, the water loss rate test results are shown in table 2, and the vitamin C content test results are shown in table 3.

TABLE 1

TABLE 2

10 days	Lichee	Spinach	Apple (Malus pumila)
				Examples	1.79％	0.63％	-0.07％
Comparative example 1	25.67％	53.24％	5.20％
				Comparative example 2	33.00％	60.23％	4.35％

TABLE 3

Spinach	2 days	6 days	10 days
				Examples	31.25％	23.19％	20.35％
Comparative example 1	25.38％	17.52％	4.25％
				Comparative example 2	23.4％	13.94％	6.58％

As can be seen from tables 1 to 3, the preservation container 100 according to the embodiment of the present invention can significantly prolong the loss of moisture and other business materials of vegetables and fruits.

According to the utility model discloses fresh-keeping container 100, the anion of vessel 10's anion powder release distributes in the whole space that holds chamber 101, can full play bactericidal action and reduce the ethylene yield of fruit vegetables, the magnetic field that magnetic part 20 produced can restrain the programmed ageing death of fruit vegetables, keep its fresh state, anion powder synergism through magnetic part 20 and vessel 10, polyphenol oxidase's activity has been reduced, the fresh-keeping cycle has been prolonged greatly, and show the loss that reduces moisture and nutrient substance, furthermore, magnetic part 20 and anion powder do not occupy the space that holds chamber 101, user's use experience has been improved, and under the circumstances of guaranteeing fresh-keeping effect, magnetic part 20 can reduce anion powder's quantity, thereby do not reduce vessel 10's structural strength isotacticity.

According to some embodiments of the present invention, at least one wall of the container body 10 is made of anion powder and polymer material, and can release anions to the accommodating chamber 101 on the premise of ensuring the structural strength of the container body 10.

In some embodiments, the negative ion powder comprises tourmaline powder and rare earth elements. The tourmaline powder has thermoelectric and piezoelectric effects, can permanently release negative ions, does not consume energy when releasing the negative ions, does not generate ozone and active oxygen, and is more energy-saving and safer to use. The rare earth elements can improve the capability of releasing negative ions of the tourmaline powder, thereby ensuring the concentration of the generated negative ions under the condition of reducing the using amount of the negative ion powder.

In some embodiments of the present invention, each wall of the container body 10 can be made of at least negative ion powder, on one hand, the concentration and uniformity of the negative ions released in the accommodating cavity 101 can be improved, and on the other hand, the difficulty of the processing technique of the accommodating body can be reduced. For example, in some embodiments, the walls of the container body 10 may be integrally formed and the manufacturing materials of the walls are the same, thereby reducing the difficulty of the manufacturing process.

In some embodiments of the present invention, the material of the container body 10 includes a polymer material and anion powder, the anion powder is composed of tourmaline powder, rare earth elements and other minerals, the weight of the rare earth elements is 60%, and the weight of the tourmaline powder is less than or equal to 20%. The processed negative ion powder accounts for 1-3% of the polymer material, and at this ratio, the negative ion powder and the polymer material can be well fused together, the structural strength and the processability of the container body 10 are improved, and the prepared container body 10 can form the negative ion concentration of 4000/m in the accommodating cavity 101³Has excellent sterilizing effect and the function of reducing the content of ethylene.

Of course, in some embodiments, the material of the container body 10 may further include active ingredients, such as nano titanium dioxide, potassium permanganate, antibacterial and antifungal particles, and the like, so as to better keep fruits and vegetables fresh.

According to the utility model discloses a some embodiments, magnetic part 20 is the permanent magnet, and the permanent magnet can keep invariable magnetism, and long service life need not the circular telegram, does not have the standby power consumption, and convenient to use, and the installation is simple, can not produce poisonous and harmful substance, does not have any pollution to the edible material and the environment that hold in the chamber 101. For example, in some embodiments, the magnetic member 20 is an anion permanent magnet, which not only does not require energy consumption and is easy to install, but also can release anions, thereby further reducing the usage amount of anion powder and improving the structural strength and other properties of the container body 10.

In some embodiments of the present invention, the magnetic field strength of the magnetic member 20 is 100mT to 500 mT. For example, in some embodiments, the magnetic field strength of the magnetic member 20 may be 100mT, 150mT, 200mT, 250mT, 300mT, 350mT, 400mT, 450mT, 500mT, or the like. Within the magnetic field intensity range, the magnetic field has ideal sterilization effect on lactobacillus acidophilus, escherichia coli, enterobacter aerogenes, common proteus and bacillus subtilis which may exist in fruits and vegetables, thereby realizing the best fresh-keeping effect and sterilization effect.

In some embodiments, the magnetic member 20 is a sintered ferrite, which is inexpensive and has a magnetic property more suitable for preservation and sterilization. The manufacturing process of the sintered ferrite comprises the following steps: raw material micro-mixing → micro-crushing → mould forming → sintering → surface treatment → electroplating → magnetizing. The shape and the magnetic field intensity of the sintered ferrite manufactured by the manufacturing process are easier to control, so that the sintered ferrite is more in line with the requirements of preservation, installation and the like. For example, the magnetic member 20 may be provided in a rectangular shape, and the length, width, and height of the magnetic member 20 may be set according to the requirement of the magnetic field strength.

According to some embodiments of the present invention, as shown in fig. 1 to 3, the container body 10 is formed in a drawer structure, and the container body 10 includes: a cabinet 11 and a crisper drawer 12. Wherein the cabinet 11 defines an installation space 111, the crisper drawer 12 defines an accommodation chamber 101, and the wall of the installation space 111 is provided with a guide 13. The fresh-keeping drawer 12 is provided with a guide matching part 14, the guide matching part 14 is in sliding fit with the guide part 13, so that the fresh-keeping drawer 12 can be matched in the installation space 111 in a drawing mode, and a user can conveniently take and place food materials from the accommodating cavity 101.

Wherein at least one of the cabinet 11 and the crisper drawer 12 is made of at least negative ion powder, in other words, a wall (e.g., at least one of the bottom side wall, the top side wall, the left side wall, the right side wall, and the rear side wall) of the installation space 11 may be made of at least negative ion powder, and/or a wall (e.g., at least one of the bottom side wall, the left side wall, the right side wall, the front side wall, and the rear side wall) of the crisper drawer 12 may be made of at least negative ion powder, which may release negative ions within the receiving chamber 101. And in the embodiment that at least one of the top side wall of the installation space 11 and the wall of the preservation drawer 12 is made of negative ion powder, the released negative ions can more easily enter the accommodating cavity 101, which is beneficial to improving the preservation effect of food materials.

In addition, the magnetic member 20 may be mounted to the housing 11 as shown in fig. 1 and 2, or the magnetic member 20 may be mounted to the crisper drawer 12 as shown in fig. 3, or both the housing 11 and the crisper drawer 12 may be provided with the magnetic member 20, which may form a magnetic field in the receiving cavity 101.

The utility model discloses do not do special restriction to the mounting structure of magnetic part 20. For example, in some embodiments, the magnetic member 20 may be adhesively secured to the housing 11 and/or the crisper drawer 12. For example, in other embodiments, the housing 11 and/or the fresh food drawer 12 may be provided with a slot, the magnetic member 20 may be installed in the slot, the magnetic member 20 is installed more securely, and the surface of the housing 11 and/or the fresh food drawer 12 is smooth, which is convenient for consumers to use.

In some embodiments, as shown in fig. 1, one of the guiding portion 13 and the guiding engagement portion 14 is a track groove, and the other of the guiding portion 13 and the guiding engagement portion 14 is a guiding protrusion, the guiding protrusion extends into the track groove and is slidable along the track groove to draw the crisper drawer 12. The magnetic member 20 can be embedded in the groove wall of the rail groove, so that the magnetic member 20 is not exposed and the fixation is more reliable.

In other embodiments, as shown in fig. 2, the wall of the installation space 111 is provided with a slot, which is adapted to the shape of the magnetic member 20, and the magnetic member 20 is inserted into the slot. In still other embodiments, as shown in FIG. 3, the crisper drawer 12 is provided with a slot adapted to the shape of the magnetic member 20, and the magnetic member 20 is inserted into the slot. Still alternatively, at least two of the groove wall of the track groove, the wall of the mounting space 111 and the fresh drawer 12 may be provided with a clamping groove for mounting the magnetic member 20, which is within the protection scope of the present invention.

It should be noted that the magnetic member 20 may be a square, circular, U-shaped or annular structure, and the clamping groove is a square groove, a circular groove, a U-shaped groove or an annular groove that matches with the magnetic member 20, so that the magnetic member 20 is firmly and reliably fixed and is not easy to fall off.

In addition, the present invention does not have any special limitation on the number of the magnetic members 20, and the number of the magnetic members 20 may be one, two, three or more. In the embodiment that the magnetic member 20 is plural, at least two magnetic members 20 are disposed on two opposite sides of the accommodating cavity 101.

For example, in the embodiment where the container body 10 includes the box body 11 and the crisper drawer 12, at least two magnetic members 20 may be respectively provided on two sidewalls (e.g., left and right sidewalls, a front sidewall and a rear sidewall) of the crisper drawer 12 opposite to each other; or at least two magnetic members 20 may be respectively provided at two walls (e.g., left and right side walls, front and rear side walls, top and bottom walls) of the installation space 111 that are opposite to each other; or at least two magnetic members 20 are respectively provided at the top wall of the installation space 111 and the bottom wall of the crisper drawer 12. Therefore, the magnetic fields can be symmetrically formed by the mode that the at least two magnetic pieces 20 are symmetrically arranged, so that the magnetic fields formed by the magnetic pieces 20 in the accommodating cavity 101 are distributed more uniformly, and the fresh-keeping effect is improved.

In the example shown in fig. 1, the left side wall and the right side wall of the box 11 are respectively provided with a track groove, and the two magnetic members 20 are respectively embedded in the two track grooves, so that the magnetic fields are symmetrically formed and the preservation effect of the magnetic fields is exerted. In the example shown in fig. 2, the left side wall and the right side wall of the box body 11 are respectively provided with a clamping groove, and the size of the clamping groove is just matched with the size of the magnetic member 20, so that the magnetic member 20 is embedded into the two side walls to symmetrically form a magnetic field, and the inner wall surface of the box body 11 is smooth, thereby facilitating the use of consumers. In the example shown in fig. 3, the magnetic members 20 are embedded in the preservation drawer 12, and the magnetic members 20 are symmetrically arranged on the left side wall and the right side wall of the preservation drawer 12 to symmetrically form magnetic fields.

The refrigeration equipment 200 according to the embodiment of the present invention includes the preservation container 100 according to the embodiment of the present invention. Because the fresh-keeping container 100 according to the embodiment of the present invention has the above-mentioned beneficial technical effects, according to the refrigeration equipment 200 of the embodiment of the present invention, the negative ions released by the negative ion powder of the container body 10 are distributed in the whole space of the containing cavity 101, so as to fully exert the sterilization effect and reduce the ethylene production of fruits and vegetables, the magnetic field generated by the magnetic member 20 can inhibit programmed aging death of fruits and vegetables, and keep the fruits and vegetables in a fresh state, the activity of polyphenol oxidase is reduced through the synergistic effect of the negative ion powder of the magnetic member 20 and the container body 10, the fresh-keeping period is greatly prolonged, and the loss of moisture and nutrient substances is significantly reduced, in addition, the magnetic member 20 and the negative ion powder do not occupy the space of the containing cavity 101, the user experience is improved, and under the condition of ensuring the fresh-keeping effect, the magnetic member 20 can reduce the dosage of the negative ion powder, so that the structural strength and the like of the container body 10 are not reduced.

In the embodiment in which the refrigerating apparatus 200 includes the freshness container 100, as shown in fig. 1 to 3, the top wall of the housing 11 of the freshness container 100 may be a shelf 210 provided in the refrigerating compartment, and the freshness container 100 may be provided under the shelf 210 in a drawable manner.

Other constructions and operations of the freshness-retaining container 100 and the refrigerating apparatus 200 according to embodiments of the present invention are known to those skilled in the art and will not be described in detail herein.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; 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 meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description herein, references to the description of the terms "embodiment," "specific embodiment," "example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A freshness retaining container, comprising:

a container body defining a receiving cavity;

a magnetic member disposed in the container body to generate a magnetic field in the accommodating chamber,

wherein the container body is made of at least negative ion powder to release negative ions in the accommodating cavity.

2. The freshness container of claim 1, wherein at least one wall of the container body is made of negative ion powder and a polymer material.

3. The freshness container of claim 1, wherein each wall of the container body is made of at least the negative ion powder.

4. The freshness retaining container according to claim 1, wherein the negative ion powder comprises tourmaline powder and rare earth elements.

5. The freshness container of any one of claims 1-4, wherein the container body is formed as a drawer structure and comprises:

the box body limits an installation space, and a guide part is arranged on the wall of the installation space;

the preservation drawer is provided with a guide matching part in sliding fit with the guide part so as to be matched in the installation space in a drawing way,

the box body and/or the preservation drawer are/is at least made of the anion powder, the preservation drawer limits the containing cavity, and the magnetic part is installed on the box body and/or the preservation drawer.

6. The freshness retaining container according to claim 5, wherein one of the guide portion and the guide engagement portion is a rail groove and the other is a guide projection, and the magnetic member is fitted into a groove wall of the rail groove.

7. The freshness container according to claim 5, wherein a wall of the installation space and/or the freshness drawer is provided with a catching groove adapted to a shape of the magnetic member, the magnetic member being inserted into the catching groove.

8. The freshness retaining container according to claim 5, wherein the magnetic member is plural, wherein,

the at least two magnetic parts are respectively arranged on two side walls of the preservation drawer, which are opposite to each other; alternatively, the first and second electrodes may be,

the at least two magnetic pieces are respectively arranged on two opposite walls of the installation space; alternatively, the first and second electrodes may be,

at least two magnetic parts are respectively arranged on the top wall of the mounting space and the bottom wall of the fresh-keeping drawer.

9. The freshness container according to any one of claims 1 to 4, wherein the magnetic member is a negative ion permanent magnet.

10. The freshness container according to any one of claims 1 to 4, wherein the magnetic member has a magnetic field strength of 100mT to 500 mT.

11. A refrigerating plant comprising a freshness-retaining container according to any one of claims 1-10.