CN111365928B

CN111365928B - Drawer for refrigerator and refrigerator

Info

Publication number: CN111365928B
Application number: CN201811605360.9A
Authority: CN
Inventors: 赵剑; 姜波
Original assignee: Haier Smart Home Co Ltd
Current assignee: Haier Smart Home Co Ltd
Priority date: 2018-12-26
Filing date: 2018-12-26
Publication date: 2021-08-24
Anticipated expiration: 2038-12-26
Also published as: CN111365928A

Abstract

The invention provides a drawer for a refrigerator and the refrigerator, comprising: the drawer body comprises a peripheral wall and a bottom plate, and the peripheral wall and the bottom plate jointly enclose a storage space with an upward opening; a first pole plate installed in the drawer body and configured to be connected to one pole of an external direct current power supply; a second pole plate installed in the drawer body and configured to be connected to the other pole of the external DC power supply; and the first polar plate and the second polar plate are oppositely arranged so as to generate a direct current electric field for improving the fresh-keeping effect in at least one part of the storage space. The drawer is internally provided with a first polar plate and a second polar plate which are oppositely arranged. The first polar plate and the second polar plate are connected with an external direct current power supply, so that an electrostatic electric field is generated in the storage space. The electric field covers at least one part of the storage space in the drawer, so that food stored in the area generates a series of biochemical reactions under the influence of the electric field, and the effect of keeping the food fresh is achieved.

Description

Drawer for refrigerator and refrigerator

Technical Field

The invention relates to the field of freezing and refrigerating, in particular to a drawer for a refrigerator and the refrigerator.

Background

With the improvement of living standard of people, the requirements of people on the quality of fresh fruits and vegetables and other agricultural and sideline products are higher and higher. Therefore, a technical innovation and a wave about preservation are raised in the field of refrigerators, and various novel preservation methods are brought forward. Among them, electrostatic preservation has become a focus of attention of refrigerator manufacturers due to its excellent preservation effect. However, how to directly apply the electrostatic preservation to the refrigerator drawer becomes a difficult problem for engineers.

Disclosure of Invention

The invention aims to provide a drawer and a refrigerator capable of achieving electrostatic preservation.

A further object of the present invention is to provide a drawer and a refrigerator having a stable fresh-keeping electric field formed therein.

Another further object of the present invention is to provide a drawer and a refrigerator which avoid the use of high voltage static electricity for electrostatic fresh-keeping effect.

In particular, the present invention provides a drawer for a refrigerator, comprising: the drawer body comprises a peripheral wall and a bottom plate, and the peripheral wall and the bottom plate jointly enclose a storage space with an upward opening; a first pole plate installed in the drawer body and configured to be connected to one pole of an external direct current power supply; a second pole plate installed in the drawer body and configured to be connected to the other pole of the external DC power supply; and the first polar plate and the second polar plate are oppositely arranged so as to generate a direct current electric field for improving the fresh-keeping effect in at least one part of the storage space.

Optionally, the first plate is embedded in at least one side of the perimeter wall, the shape of which fits the side.

Optionally, the number of the first polar plates is two, and the first polar plates are respectively embedded in two opposite side surfaces; the second polar plate is arranged in the storage space, is flat and is parallel to the two side surfaces embedded with the first polar plate.

Optionally, strip-shaped grooves arranged at intervals are formed on two side surfaces of the second polar plate opposite to the first polar plate respectively.

Optionally, the drawer further comprises: the two ends of the polar plate housing are respectively provided with a side surface which is not provided with the first polar plate on the peripheral wall and fixed with the polar plate housing; and the second polar plate is arranged inside the polar plate housing.

Optionally, a contact electrode is arranged on the top of the side surface inlaid with the first polar plate and used for communicating the first polar plate with an external direct-current power supply; the end part of the polar plate housing is also provided with an electrode hole for communicating the second polar plate with an external direct current power supply.

Optionally, the field strength of the electric field is 38V/m to 317V/m.

Optionally, the first plate is connected to the positive pole of the external dc power source, and the second plate is connected to the negative pole of the external dc power source.

In particular, the present invention also provides a refrigerator including: the box body is provided with an outward opening, and a storage compartment is defined in the box body; according to any one of the above-mentioned drawers, and placed in the storage compartment.

Optionally, the refrigerator further comprises: the power supply is arranged inside the box body; the plurality of power supply electrodes are arranged in the storage room and are connected with a power supply; the power supply is used as an external direct current power supply, and the plurality of power supply electrodes are respectively connected with the first polar plate and the second polar plate when the drawer is inserted into the storage room, so that the power supply supplies power to the first polar plate and the second polar plate.

The drawer for the refrigerator and the refrigerator are characterized in that a first polar plate and a second polar plate which are oppositely arranged are arranged in the drawer. The first polar plate and the second polar plate are connected with an external direct current power supply, so that an electrostatic electric field is generated in the storage space. The electric field covers at least one part of the storage space in the drawer, so that food stored in the area generates a series of biochemical reactions under the influence of the electric field, and the effect of keeping the food fresh is achieved.

Further, according to the drawer for the refrigerator and the refrigerator, the strip-shaped grooves are arranged on the polar plate at intervals, so that charges accumulated on the polar plate can be concentrated near the grooves. And then when external voltage is unstable, the electric charge gathered near the groove can partially offset voltage fluctuation, so that a more stable electric field is provided, and a more stable fresh-keeping effect is obtained. The food deterioration caused by the instability of the electric field is avoided, and the use experience of a user is improved.

Further, according to the drawer for the refrigerator and the refrigerator, provided by the invention, the food placed in the drawer is kept fresh by forming the electric field with the field intensity of 38V/m to 317V/m in the drawer. The experimental data show that for the same food, respectively placed in an electric field of 38V/m to 317V/m, an electric field greater than 317V/m and an electric field-free environment, the food has the lowest nutrient loss rate when placed in the electric field of 38V/m to 317V/m after the same storage time. Therefore, under the electric field intensity, the aim of electrostatic preservation can be fulfilled, and the safety risk caused by adopting a high-voltage electric field is avoided.

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

Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

FIG. 1 is an overall schematic view of a drawer according to one embodiment of the present invention;

FIG. 2 is a side schematic view of a drawer facing the interior of the cabinet according to one embodiment of the present invention;

FIG. 3 is a partial cross-sectional view of area A of FIG. 2, showing the position of the first plate;

FIG. 4 is a partial cross-sectional view of region B of FIG. 2, showing the position of the first plate;

FIG. 5 is a schematic view of a plate housing of a drawer according to one embodiment of the invention;

FIG. 6 is a schematic illustration of the freshness effect of a drawer according to one embodiment of the present invention;

fig. 7 is an overall schematic view of a refrigerator according to one embodiment of the present invention.

Detailed Description

The present embodiment provides a drawer 120 for a refrigerator 100, and fig. 1 is an overall schematic view of the drawer 120 according to an embodiment of the present invention. The drawer 120 includes: a drawer body 121, a first pole plate 124 and a second pole plate 125.

The drawer body 121, which is a main component constituting the drawer 120, includes a peripheral wall 122 and a bottom plate 123. The peripheral wall 122 and the bottom plate 123 are joined and together enclose a storage space having an upward opening. The first plate 124 is mounted in the drawer body 121, for example, in the storage space, and is embedded in the peripheral wall 122, for example. The second plate 125 is mounted in the drawer body 121, and similarly, may be mounted in the storage space or embedded in the peripheral wall 122. The first plate 124 is configured to be connected to one pole of an external dc power source, and the second plate 125 is configured to be connected to the other pole of the external dc power source. The first plate 124 is disposed opposite to the second plate 125 to generate a dc electric field for enhancing a fresh-keeping effect in at least a portion of the storage space. Since the first polar plate 124 and the second polar plate 125 are directly arranged in the drawer body 121, an electric field for fresh keeping can be generated under the condition of low voltage, and meanwhile, the safety risk brought by using a high-voltage electric field is avoided.

Fig. 2 is a schematic side view of the drawer 120 facing the inside of the case 110 according to an embodiment of the present invention, fig. 3 is a partial sectional view of a region a of fig. 2, in which a position of the first plate 124 is shown, fig. 4 is a partial sectional view of a region B of fig. 2, in which a position of the first plate 124 is shown, and fig. 5 is a schematic side view of the plate housing 126 of the drawer 120 according to an embodiment of the present invention.

The first plate 124 is embedded in at least one side of the peripheral wall 122 and is shaped to fit the side. By embedding the first plate 124 inside the peripheral wall 122, the storage space inside the drawer body 121 can be as complete as possible, so that a user can place a large-volume article in the storage space. In some alternative embodiments, the number of first plates 124 is one, embedded in one side of the peripheral wall 122. Correspondingly, the second plate 125 may be disposed in the storage space and opposite to the first plate 124, or the second plate 125 may be embedded inside the peripheral wall 122 opposite to the first plate 124.

In other alternative embodiments, the number of first plates 124 is two, and the first plates are respectively embedded in two opposite side surfaces. The second plate 125 is installed in the storage space, and has a flat shape and is parallel to both sides on which the first plate 124 is mounted. The second plate 125 is disposed in the storage space and is opposite to the two first plates 124, so that the electric field intensity in the storage space can be ensured, and the food stored in the storage space can be covered under the electric field with a certain intensity, thereby obtaining a better fresh-keeping effect.

The second plate 125 has strip-shaped grooves 129 formed on two opposite side surfaces of the first plate 124. The cross-sectional shape of the bar-shaped groove 129 is circular arc, and the gap direction of the circular arc faces the first pole plate 124. When the second plate 125 is simultaneously opposite to the two first plates 124, the arcs facing different directions are spaced apart. The extending direction of the bar-shaped groove 129 may be a direction parallel to the horizontal plane. The bar-shaped grooves 129 may be used to collect charges to reduce an influence caused when a voltage of an external dc power supply fluctuates or the voltage is unstable due to movement of the refrigerator 100, etc., and may play a role in stabilizing an electric field. Avoid food that leads to because the electric field is unstable to deteriorate, promote user's use and experience.

The drawer 120 further includes a plate case 126 having both ends fixed to the side surfaces of the peripheral wall 122 where the first plate 124 is not disposed, and the second plate 125 is installed inside the plate case 126. The second plate 125 is fixedly installed in the storage space by the plate housing 126, and such that the second plate 125 can be opposite to the first plate 124. Grooves matching the strip grooves 129 are also formed on the surface of the plate housing 126. Mounting the second plate 125 in the plate housing 126 avoids placing the bare plates directly in the wet storage space, preventing the first plate 124 from communicating with the second plate 125 due to moisture.

A contact electrode 127 for connecting the first electrode plate 124 with an external dc power source is provided on the top of the side surface in which the first electrode plate 124 is embedded. The contact electrode 127 is disposed at the top of the side near the rear wall of the refrigerator 100, and is connected to the contact electrode 127 by a wire disposed in the side. The end of the plate housing 126 is also provided with an electrode hole 128 for connecting the second plate 125 to an external dc power supply. The electrode hole 128 is provided at an end of the plate case 126 facing the rear wall of the refrigerator 100, and a passage hole corresponding to the electrode hole 128 is also opened at a side surface contacting the plate case 126.

In some alternative embodiments, the first plate 124 is connected to the positive pole of an external dc power source, and the second plate 125 is connected to the negative pole of the external dc power source. In alternative embodiments, the first plate 124 is connected to the negative pole of an external dc power source and the second plate 125 is connected to the positive pole of the external dc power source.

Fig. 6 is a schematic view illustrating the freshness effect of the drawer 120 according to an embodiment of the present invention.

The electric field may have a field strength of 38V/m to 317V/m, for example, the electric field strength may be 38V/m or 317V/m. Preferably, the electric field strength may be 38V/m to 280V/m. More preferably, the electric field strength may be 38V/m to 230V/m. Most preferably, the electric field strength may be 38V/m to 150V/m.

The electrostatic field can play a role in keeping food fresh mainly due to the following three reasons:

first, electrostatic fields can alter the transmembrane potential of cell membranes, thereby affecting the direction of ion movement and permeability of cell membranes. For example, the oxidative phosphorylation level of cells is affected in an externally applied low voltage electrostatic field.

Secondly, the electrostatic field can influence the biological electric field inside the fruits and vegetables, thereby influencing various cell metabolic activities. Fruits and vegetables, as a living body, have their own inherent electric field, and when such an inherent electric field is subjected to external interference, it may show some physiological change. Many normal metabolic activities in cells are related to metal ions, such as cytochrome C (CytC) which performs electron transfer in the respiratory chain of cells and enzymes which take metal ions as prosthetic groups, and the applied electric field treatment just can influence the cellular metabolic processes related to the activities of the metal ions. In the process, proper electric field treatment is just helpful to delay cell-related activities so as to achieve the effect of fresh keeping.

And thirdly, the electrostatic field can change the state of water molecules around the enzyme protein, thereby influencing the activity of the enzyme in the fruits and vegetables. The water around the enzyme protein is not only the survival condition of the fruits and vegetables, but also an important component of the fruit and vegetable cells. When the structure of the enzyme is changed by the action of an external electrostatic field on water around the enzyme, the combination state of the water and the enzyme is possibly changed under certain conditions, so that the activity of the enzyme cannot be exerted, and the activity is lost. The inactivation of the enzyme can delay the physiological metabolic process of the fruits and vegetables, thereby achieving the purpose of fresh-keeping.

FIG. 6 shows the nutrient loss rate of pork after two weeks of frozen storage, wherein the abscissa represents different storage environments of pork, i.e., low static voltage (electric field strength between 38V/m and 317V/m), high static voltage (electric field strength greater than 317V/m), and normal freezing (no electric field environment). The ordinate is the nutrient loss rate of pork, wherein the indexes for measuring the nutrient loss rate comprise: the meat juice exudation rate, the total number of bacteria, the actomyosin salt solubility and the protease activity comprehensively consider the variation of pork nutrition.

During the experiment, it is surprisingly found that for aquatic products and meat foods, the nutrition loss rate of the aquatic products and meat foods when the aquatic products and meat foods are placed in an electric field of 38V/m to 317V/m is smaller than that of aquatic products and meat foods when the aquatic products and meat foods are placed in an electric field of more than 317V/m or in an electric field-free environment. In addition, the inventor also carries out the same experiment on meat products such as mutton, beef and chicken and aquatic products such as fish and shellfish, and the same experiment results are obtained.

Therefore, the first polar plate 124 and the second polar plate 125 which are opposite to each other are arranged inside the drawer 120, and an electric field with the electric field intensity of 38V/m to 317V/m is generated in the storage space, so that food, particularly aquatic products and meat food can be kept fresh better.

The present embodiment also provides a refrigerator 100, and fig. 7 is an overall schematic view of the refrigerator 100 according to an embodiment of the present invention. The refrigerator 100 includes: a case 110, a drawer 120, a power supply source, and a power supply electrode 112.

The case body 110 has an open exterior, and defines a storage compartment 111 therein. The drawer 120 is disposed in the storage compartment 111, and is used for dividing the storage compartment 111 into a plurality of independent storage spaces, so as to classify and store food or perform further fresh-keeping processing. The drawer 120 may be the drawer 120 of any of the above embodiments, which can achieve the corresponding technical effects in the refrigerator 100. The drawer 120 may be placed in a cold storage compartment or a freezer compartment. Preferably, the drawer 120 is particularly adapted for placement in a freezer compartment to enhance the freshness of meat or aquatic food.

The power supply is disposed inside the case 110, and is used as an external dc power supply for supplying power to the first plate 124 and the second plate 125, which may be a power supply of the refrigerator 100 itself or a power supply separately disposed inside the case 110. A plurality of power feeding electrodes 112 are provided in the storage compartment 111 and are connected to a power supply. The plurality of power supply electrodes 112 are respectively configured to be matched with the contact electrodes 127 and the electrode holes 128, and are respectively connected with the first plate 124 and the second plate 125 when the drawer 120 is inserted into the storage compartment 111, so that the power supply supplies power to the first plate 124 and the second plate 125. When the drawer 120 is drawn out from the storage compartment 111, the power supply electrode 112 is disconnected from the contact electrode 127 and the electrode hole 128, respectively, to ensure that the drawer 120 is not powered when a user operates food placed in the drawer 120, thereby improving safety in use of the refrigerator 100.

In the drawer 120 for the refrigerator 100 and the refrigerator 100 of the present embodiment, a first pole plate 124 and a second pole plate 125 are oppositely disposed inside the drawer 120. By connecting the first and

second plates

124 and 125 to an external dc power source, an electrostatic field is generated in the storage space. The electric field covers at least a portion of the storage space in the drawer 120, so that food stored in the area generates a series of biochemical reactions under the influence of the electric field, thereby performing a function of keeping the food fresh.

Further, the drawer 120 for the refrigerator 100 and the refrigerator 100 of the present embodiment may be configured such that the charges accumulated on the plate can be concentrated near the grooves by providing the strip-shaped grooves 129 on the plate at intervals. And then when external voltage is unstable, the electric charge gathered near the groove can partially offset voltage fluctuation, so that a more stable electric field is provided, and a more stable fresh-keeping effect is obtained. The food deterioration caused by the instability of the electric field is avoided, and the use experience of a user is improved.

Further, the drawer 120 for the refrigerator 100 and the refrigerator 100 of the embodiment keep food fresh by forming an electric field with a field strength of 38V/m to 317V/m inside the drawer 120. The experimental data show that for the same food, respectively placed in an electric field of 38V/m to 317V/m, an electric field greater than 317V/m and an electric field-free environment, the food has the lowest nutrient loss rate when placed in the electric field of 38V/m to 317V/m after the same storage time. Therefore, under the electric field intensity, the aim of electrostatic preservation can be fulfilled, and the safety risk caused by adopting a high-voltage electric field is avoided.

Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.

Claims

1. A drawer for a refrigerator, comprising:

the drawer comprises a drawer body, a drawer body and a drawer body, wherein the drawer body comprises a peripheral wall and a bottom plate, and the peripheral wall and the bottom plate jointly enclose a storage space with an upward opening;

a first pole plate installed in the drawer body and configured to be connected to one pole of an external direct current power supply;

a second pole plate installed in the drawer body and configured to be connected to the other pole of the external DC power supply; and is

The first polar plate and the second polar plate are oppositely arranged so as to generate a direct current electric field for improving the fresh-keeping effect in at least one part of the storage space;

strip-shaped grooves which are arranged at intervals are formed on the surfaces of two opposite sides of the second polar plate and the first polar plate respectively.

2. The drawer of claim 1,

the first polar plate is embedded in at least one side face of the peripheral wall, and the shape of the first polar plate is matched with that of the side face.

3. The drawer of claim 2,

the number of the first polar plates is two, and the first polar plates are respectively embedded in the two opposite side surfaces;

the second polar plate is arranged in the storage space, is flat and is parallel to the two side surfaces embedded with the first polar plate.

4. The drawer of claim 3, further comprising:

the two ends of the polar plate housing are respectively provided with a side surface which is not provided with the first polar plate and fixed with the peripheral wall;

the second polar plate is arranged inside the polar plate housing.

5. The drawer of claim 4,

a contact electrode is arranged at the top of the side surface embedded with the first polar plate and used for communicating the first polar plate with the external direct current power supply;

and the end part of the polar plate housing is also provided with an electrode hole for communicating the second polar plate with the external direct current power supply.

6. The drawer of claim 1,

the field intensity of the electric field is 38V/m to 317V/m.

7. The drawer of claim 1,

the first polar plate is connected with the positive pole of the external direct-current power supply, and the second polar plate is connected with the negative pole of the external direct-current power supply.

8. A refrigerator, comprising:

the box body is provided with an outward opening, and a storage compartment is defined in the box body;

the drawer of any of claims 1 to 7, and placed within the storage compartment.

9. The refrigerator of claim 8, further comprising:

the power supply is arranged inside the box body;

the plurality of power supply electrodes are arranged in the storage room and are connected with the power supply;

the power supply is used as the external direct current power supply, and the plurality of power supply electrodes are respectively connected with the first polar plate and the second polar plate when the drawer is inserted into the storage room, so that the power supply supplies power to the first polar plate and the second polar plate.