CN115638586A

CN115638586A - A kind of refrigerator

Info

Publication number: CN115638586A
Application number: CN202211393517.2A
Authority: CN
Inventors: 鞠晓晨; 王磊; 蓝翔
Original assignee: Hisense Refrigerator Co Ltd
Current assignee: Hisense Refrigerator Co Ltd
Priority date: 2022-11-08
Filing date: 2022-11-08
Publication date: 2023-01-24

Abstract

The invention discloses a refrigerator, which is provided with at least one drawer, wherein a closed storage area for storing fruits and vegetables is formed in the drawer, a heating part is used for adjusting the temperature in the storage area, a moisture permeable film is arranged on the drawer and is used for allowing moisture in the storage area to flow out to the outside in a one-way mode when the humidity in the storage area is higher than the external humidity so as to adjust the humidity in the storage area, an ethylene removing part is used for removing ethylene in the storage area, a photoelectric detection module is used for acquiring the color change of the fruits and vegetables in the storage area, and a system judges the maturity of the fruits and vegetables according to the color change so as to control the operation of the heating part and the ethylene removing part, so that the ripening of the unripe fruits and vegetables is accelerated, the fresh-keeping storage time of the ripened fruits and vegetables is prolonged, and the storage effect of the fruits and vegetables is improved.

Description

A kind of refrigerator

Technical Field

The invention relates to the technical field of refrigeration equipment, in particular to a refrigerator.

Background

Tropical fruits generally grow in tropical regions, and because the tropical fruits are picked after being ripe and can be over-ripe and rotten in the transportation process, the tropical fruits are picked when being unripe, are often ripened by chemical methods and the like before being sold, and are sold to users. As the tropical fruit is matured, the flavor substances are increased and the sweetness is increased. However, tropical fruits have the best maturity, and the sensory color of the tropical fruits is reduced and the tropical fruits fade. Therefore, tropical fruits have the best taste and nutritional quality only at a specific maturity.

In the selling link, most of the tropical fruits are ripened by vendors, and the ripening degree of the tropical fruits is difficult to control to be the optimal ripening degree, so the ripeness of the tropical fruits bought by consumers is inconsistent, and common consumers want to keep the optimal ripening degree of the tropical fruits and taste the optimal taste and flavor, which is difficult to realize.

In the home storage environment, consumers have difficulty controlling the ripeness of purchased tropical fruits. The fruits can be over-ripe quickly when being placed at normal temperature, the cold damage of tropical fruits can be caused by the low-temperature environment refrigerated by a refrigerator, even if consumers place the tropical fruits at 10-15 ℃ which is mostly suitable for storage, the ripeness of the tropical fruits is difficult to be controlled to be optimal only by temperature, and the time for the fruits to stay at the optimal ripeness is prolonged to the maximum extent.

The above information disclosed in this background section is only for enhancement of understanding of the background section of the application and therefore it may contain prior art that does not constitute known technology to those of ordinary skill in the art.

Disclosure of Invention

The invention provides a refrigerator, aiming at the problems pointed out in the background technology, wherein the color change of fruits and vegetables in a storage area is obtained through a photoelectric detection module, and the maturity of the fruits and vegetables is judged by a system according to the color change, so that the running of related parts is controlled, and the storage effect of the fruits and vegetables is improved.

In order to realize the purpose of the invention, the invention is realized by adopting the following technical scheme:

in some embodiments of the present application, a refrigerator is provided, which has at least one drawer, wherein a closed storage area for storing fruits and vegetables is formed in the drawer;

the heating part is used for adjusting the temperature in the storage area;

the drawer is provided with a moisture permeable film for allowing the moisture in the storage area to flow out to the outside in a one-way when the humidity in the storage area is higher than the external humidity so as to adjust the humidity in the storage area;

the ethylene removing part is used for removing ethylene in the storage area;

the photoelectric detection module is used for acquiring the color change of the fruits and the vegetables in the storage area, and the system judges the maturity of the fruits and the vegetables according to the color change so as to control the operation of the heating part and the ethylene removing part.

This application acquires the colour change of fruit vegetables in the storage area through the photoelectric detection module, and the system judges the maturity of fruit vegetables according to the colour change, controls the operation of relevant part according to this, reaches the fresh-keeping save time of the ripe fruit vegetables of the maturity of accelerating and extension fruit vegetables to improve the storage effect of fruit vegetables.

In some embodiments of the present application, the fruits and vegetables have a suitable storage temperature range and a cold injury critical temperature range;

when the system analyzes that the fruits and vegetables do not reach the optimal maturity, the refrigerator enters a ripening mode, the heating part is opened or closed according to the temperature in the storage area so that the temperature in the storage area is within the suitable storage temperature range, and the ethylene removing part is closed;

when the system analyzes that the fruits and vegetables reach the optimal maturity, the refrigerator enters a fresh-keeping mode, the heating part is turned on or turned off according to the temperature in the storage area so that the temperature in the storage area is within the cold injury critical temperature range, and the ethylene removing part is turned on.

In some embodiments of the present application, the heating portion is disposed on an inner container wall of a storage space where the drawer is located, and is used for adjusting the temperature of the storage space where the drawer is located, the heating portion includes a heating wire, a heat reflecting layer and a heat insulating layer, the heat insulating layer is disposed on the inner container wall, the heat reflecting layer is disposed on the heat insulating layer, and the heating wire is disposed on the heat reflecting layer.

In some embodiments of the present application, an air cavity communicated with a refrigeration air duct of a refrigerator is arranged on a rear wall of an inner container of a storage space where a drawer is located, a refrigeration fan is arranged in the air cavity, and an air outlet and an air return opening are arranged on one side of the air cavity facing the storage space;

and the refrigeration fan is started when the temperature in the storage area reaches a set temperature upper limit value.

In some embodiments of this application, be equipped with on the roof of drawer moisture permeable membrane and interior dehumidification fan, interior dehumidification fan is close to moisture permeable membrane sets up, interior dehumidification fan is located the roof of drawer is inboard, interior dehumidification fan be used for with outside the discharging of air in the storage area.

In some embodiments of the present application, a magnetically sensitive portion is disposed on an inner side of the inner dehumidifying fan, the magnetically sensitive portion has an extending portion extending outward from the inner dehumidifying fan, the extending portion extends toward the moisture permeable film, an electromagnetic coil is disposed above the extending portion, and the extending portion is displaced in a direction approaching the electromagnetic coil under a magnetic action generated by the electromagnetic coil.

In some embodiments of the present application, the solenoid has multiple operating powers, and the operating power of the solenoid increases as the humidity in the storage area increases.

In some embodiments of this application, the roof outside of drawer is equipped with outer dehumidification fan, outer dehumidification fan is close to the moisture permeable membrane sets up, interior dehumidification fan with outer dehumidification fan is used for running with different rotational speeds in order to adjust the vapor pressure difference of the inside and outside both sides of moisture permeable membrane adjusts moisture warp in the storage area the rate that moisture permeable membrane flows out.

In some embodiments of the present application, a humidifying water box is disposed in the storage area, and is used for adjusting humidity in the storage area;

the humidification water box is used for right the cooling portion that water in the humidification water box cooled down, cooling portion is in the temperature of water in the humidification water box reaches open when the measurement temperature value in the storage area is more than.

In some embodiments of the present application, the cooling portion is a cooling fan disposed in the humidifying water box; alternatively, the first and second electrodes may be,

for locating on the drawer and with the vent of humidification water box intercommunication, the vent communicates with the refrigeration wind channel of refrigerator, the vent be used for to carry air conditioning in the humidification water box with right the water cooling in the humidification water box, vent department is equipped with and is used for closing and opening the air door of vent.

Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when taken in conjunction with the accompanying drawings.

Drawings

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

FIG. 1 is a list of storage conditions for major tropical fruits and vegetables;

FIG. 2 illustrates a storage manner of tropical fruits and vegetables in a refrigerator according to an embodiment;

fig. 3 is a schematic structural view of a refrigerator according to an embodiment;

FIG. 4 is a schematic view of a drawer according to an embodiment;

FIG. 5 is a schematic view of the structure of FIG. 4 as viewed from the direction Q;

FIG. 6 is a schematic view of a drawer top according to an embodiment, viewed from the inside;

FIG. 7 is a schematic structural view of a heating part provided on a wall of an inner container according to an embodiment;

fig. 8 is a schematic structural view of a heating portion according to an embodiment;

fig. 9 is a control flowchart of a heating portion according to an embodiment;

FIG. 10 is a schematic view of a drawer according to another embodiment;

FIG. 11 is a temperature control flow diagram of a drawer storage area refrigeration fan in combination with a heating portion, according to an embodiment;

FIG. 12 is a humidity control flow diagram of a combination of dehumidification fans inside and outside a drawer storage area, according to an embodiment;

FIG. 13 is a top view of a drawer according to an embodiment;

fig. 14 is a flowchart of the humidifying portion opening control according to the embodiment;

FIG. 15 is a side view of a drawer top according to another embodiment;

FIG. 16 is a bottom plan view of the drawer top of FIG. 15;

FIG. 17 is a schematic diagram of the relative positions of the inner dehumidification fan, the magnetically sensitive portion, and the electromagnetic coil according to an embodiment;

FIG. 18 is a schematic view of the magnetic sensor of FIG. 17 after displacement;

FIG. 19 is a flow chart of control of a refrigerator based on fruit and vegetable ripeness and color change according to an embodiment;

reference numerals are as follows:

10-a box body and 11-a control screen;

20-inner container, 21-air outlet, 22-air return inlet and 23-storage space;

100-drawer, 110-drawer body, 120-top cover, 130-storage area;

200-heating part, 210-heating wire, 220-heat reflecting layer and 230-heat insulating layer;

300-humidification, 310-dampers;

400-moisture permeable film;

510-inner dehumidification fan, 520-outer dehumidification fan;

600-ethylene removal section;

700-a temperature sensor;

810-magnetically sensitive portion, 811-extension portion, 820-electromagnetic coil.

Detailed Description

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

In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in this application will be understood to be a specific case for those of ordinary skill in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the invention. To simplify the disclosure of the present invention, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

[ refrigerator ]

Referring to fig. 3, the refrigerator of the present embodiment has an approximately rectangular parallelepiped shape, and an external appearance of the refrigerator is defined by a storage chamber defining a storage space and a plurality of door bodies provided in the storage chamber. An inner container 20 is provided in the case 10, and the inner container 20 encloses a plurality of storage spaces 23 for storing articles. The temperature and humidity in each storage space may be controlled to store different types of items.

One of the key research directions of the refrigerator in the embodiment is to improve the storage effect of tropical fruits and vegetables, and the key research directions comprise that immature tropical fruits and vegetables are stored in a ripening mode to reach the optimal maturity; and the mature tropical fruits and vegetables are stored in a fresh-keeping mode, so that the tropical fruits and vegetables are stored in an optimal temperature and humidity environment, and the fresh-keeping storage time is prolonged.

The optimal storage conditions of the existing common tropical fruits and vegetables are shown in fig. 1, and the critical temperature, the proper temperature and the cold damage manifestation symptoms of the existing common tropical fruits and vegetables are shown in fig. 1.

And classifying according to the cold damage critical temperature and the suitable storage humidity of each type of fruits and vegetables, and determining the storage mode, the storage temperature and the storage humidity of each type of fruits and vegetables.

For example, the cold injury critical temperature range of the bananas is 11.7-13.3 ℃, namely when the storage temperature is lower than the range, the bananas are easy to generate cold injury phenomenon, so that water stain type dark green patches appear on the peels, brown stripes appear in the skins, the central tire seat becomes hard, the maturation is delayed, and the like; the appropriate storage humidity of the bananas is 90-95%, when the storage humidity is over the range, the phenomena of condensation in a chamber, surface impregnation of fruits and vegetables and the like are easily caused, and the rot of the fruits and vegetables is accelerated; when the storage humidity is lower than the range, the banana is easy to lose water and lose weight, and the fruit preservation quality is reduced.

According to the cold damage temperature range and the suitable storage humidity range of each tropical fruit and vegetable shown in fig. 1, the refrigerator determines that the storage of the tropical fruit and vegetable is divided into three modes, namely a warm storage mode, a warm storage mode and a cold storage mode, as shown in fig. 2.

The bananas, mangoes, lemons, tomatoes, sweet potatoes and avocados are suitable for being stored in a warm storage mode, the storage temperature is about 15-12 ℃, and the storage humidity is 90-95%;

pumpkin, cucumber, wax gourd, melon, cabbage and orange are stored in a warm storage mode at the temperature of about 12-9 ℃ and the storage humidity of 85-90%;

the sweet pepper, the green pepper, the kidney bean, the eggplant, the rambutan and the papaya are stored in a refrigeration mode at a storage temperature of about 9-6 ℃ and a storage humidity of 80-85%.

The refrigerator of this embodiment further has at least one drawer 100, and fig. 3 shows the drawer 100 in a pulled-out state, the drawer 100 is disposed in the storage space 23, and a closed storage area 130 for storing tropical fruits and vegetables is formed in the drawer 100.

A special storage area is provided for tropical fruits and vegetables by using the drawer 100, and the optimal storage temperature and humidity are provided for the tropical fruits and vegetables by adjusting the temperature and humidity in the storage area 130, so that the storage effect is improved.

The temperature regulation specifically comprises temperature rise control and temperature reduction control.

The humidity adjustment specifically comprises an increase humidity control and a decrease humidity control.

In some embodiments of the present application, in the drawer 100, a certain kind of tropical fruits and vegetables are not usually stored separately, but a plurality of kinds of tropical fruits and vegetables are stored in a mixed manner, and a control method for the refrigerator to store the plurality of kinds of tropical fruits and vegetables in a mixed manner is as follows:

when all tropical fruits and vegetables in the storage area belong to the fruit and vegetable types corresponding to the warm storage mode, the warm storage mode or the refrigeration mode, the temperature and the humidity in the storage area are adjusted to the temperature range and the humidity range corresponding to the tropical fruits and vegetables in the warm storage mode, the warm storage mode or the refrigeration mode.

When tropical fruit vegetables in the storage area belong to the fruit vegetables that two or three correspond among warm mode, the cold storage mode, use the less data in temperature interval and humidity interval to adjust temperature and humidity in the storage area as the standard.

For example, when only the fruits and vegetables corresponding to the refrigeration mode are stored in the storage area, the temperature of the storage area is adjusted to the first level, the storage temperature is adjusted to 9-6 ℃, and the humidity is adjusted to 80-85%;

only the fruits and vegetables corresponding to the 'warm storage mode' are stored in the storage area, or when the fruits and vegetables corresponding to the 'cold storage mode' and the fruits and vegetables corresponding to the 'warm storage mode' exist, the temperature of the storage area is adjusted to the second grade, the storage temperature is adjusted to 12-9 ℃, and the humidity is adjusted to 85-90%;

when only the fruits and vegetables corresponding to the warm storage mode are stored in the storage area, or the fruits and vegetables corresponding to the cold storage mode and the fruits and vegetables corresponding to the warm storage mode exist, or the fruits and vegetables corresponding to the warm storage mode exist, the temperature of the storage area is adjusted to be three levels, the storage temperature is adjusted to be 15-12 ℃, and the humidity is adjusted to be 90-95%.

In some embodiments of the present application, the box 10 is provided with a control screen 11 for displaying and selecting a plurality of temperature control intervals of the storage area, which may also be referred to as a plurality of storage modes, so as to facilitate use and operation.

[ drawer ]

In some embodiments, referring to fig. 4, the drawer 10 includes a drawer body 110 and a top cover 120, the top cover 120 is disposed at the top opening of the drawer body 110 for closing and opening the opening, and after the top cover 120 is closed, the drawer body 110 and the top cover 120 enclose a closed storage area 130 for storing fruits and vegetables.

A drawing structure such as a slide way can be arranged between the drawer body 110 and the refrigerator inner container 20 and between the drawer body 110 and the top cover 120, so that the drawing action is convenient.

[ temperature control Structure-heating part ]

In some embodiments of the present application, the temperature within the drawer storage area is regulated by the heating part 200. It is understood that a temperature sensor 700 is provided in the storage area for collecting temperature data.

The heating part 200 may be an electric heating structure such as a heating wire, and temperature adjustment is achieved by turning off and on the heating wire.

According to different optimal storage temperature environments of different tropical fruits and vegetables, a plurality of temperature control intervals are arranged in the storage area of the drawer 100, such as a warm storage mode corresponding to 15-12 ℃, a warm storage mode corresponding to 12-9 ℃ and a cold storage mode corresponding to 9-6 ℃.

The heating unit 200 stops operating when the temperature in the storage area 130 becomes equal to or higher than the upper temperature limit value of the temperature control section, and the heating unit 200 starts operating when the temperature in the storage area 130 becomes equal to or lower than the lower temperature limit value of the temperature control section.

For example, taking banana storage as an example, if the temperature in the storage area of the drawer 100 is higher than 15 ℃, the heating part is turned off, and the storage area does not need to be heated; and if the temperature in the storage area is lower than 12 ℃, the heating part is started to heat the storage area and raise the temperature of the storage area.

The present application provides two embodiments, one is to arrange the heating part 200 on the side wall of the drawer 100, and the other is to arrange the heating part 200 on the side wall of the inner container 20 of the storage space 23 where the drawer 100 is located.

In some embodiments of the present application, in a first arrangement manner of the heating portion 200, referring to fig. 5, the heating portion 200 is provided on at least one side wall of the drawer body 110, and is marked as a built-in heating portion, and the heating portion 200 is a heating wire, and the heating wire is turned on to directly heat the storage region 130 for temperature rise.

The heating wires are in a shape of a snake disk or are spirally laid on the side wall of the drawer body 110, so that the heating area is increased, and the heating efficiency is improved.

In some embodiments of the present application, in order to improve the temperature uniformity in the storage area of the drawer 100, heating wires are disposed on a plurality of sidewalls of the drawer body 110. As shown in fig. 13, heating wires are provided on the front wall, the rear wall, and the left wall of the drawer 100.

In some embodiments of the present application, referring to fig. 7 and 8, the heating portion 200 is disposed on an inner wall of the storage space 23 where the drawer 100 is located, and is denoted as an external heating portion, the heating portion 200 heats the storage space 23 where the drawer 100 is located instead of directly heating the storage area of the drawer 100, and after the temperature of the air outside the drawer 100 is raised, the storage area of the drawer 100 is slowly and smoothly brought to the optimal storage temperature required for fruits and vegetables within a long time period by using the heat conduction function of the drawer wall.

The reason for the arrangement is that on one hand, the fruits and vegetables have temperature adaptability, if the temperature of the storage environment is rapidly increased at a relatively high temperature rise rate, the temperature difference exists between the surface and the center of the fruit and vegetable tissue, internal stress can be generated on the tropical fruits and vegetables due to thermal expansion and cold contraction, the epidermis of the tropical fruits and vegetables can be cracked, the breathing intensity is suddenly increased, a large amount of nutrient substances are consumed, and the quality of the tropical fruits is greatly reduced; on the other hand, the rapid temperature change in the storage environment may cause temperature unevenness, which is likely to cause condensation and immersion on the surfaces of tropical fruits and vegetables, thereby accelerating the growth and propagation of microorganisms and the putrefaction of the tropical fruits and vegetables.

Through external heating portion 200, utilize the natural convection circulation of drawer 100 outside air in the heating process, make drawer 100 outside air temperature evenly rise to heat conduction through the drawer outer wall realizes outside air and drawer storage area heat transfer, improves the temperature homogeneity in the storage area 130.

In some embodiments of the present application, referring to fig. 8, the heating part 200 includes heating wires 210, a heat reflecting layer 220, and a heat insulating layer 230, the heat insulating layer 230 is disposed on the inner container wall, the heat reflecting layer 220 is disposed on the heat insulating layer 230, and the heating wires 210 are disposed on the heat reflecting layer 220.

The heat reflecting layer 220 may be a tin paper layer, and may reflect heat generated by the heating wire 210 toward the rear into the cabinet, i.e., a space between the inner container 20 and the drawer 100, so that the temperature of air in the space is increased to reduce the heat transferred toward the inner container 20. The heat insulation layer 230 is additionally arranged behind the heat reflection layer 220, so that the heat can be further prevented from being transferred to the inner container 20, and the inner container 20 can be prevented from being burnt.

Meanwhile, the heat reflecting layer 220 and the heat insulating layer 230 reduce heat transferred to the outside of the refrigerator, reduce heat loss in the heating process, and reduce heating energy consumption of the heating part.

The heating wires 210 are laid on the heat reflecting layer 220 in a serpentine shape or a spiral shape, so that the heating area is increased, and the heating efficiency is improved.

In some embodiments of the present application, the external heating portions 200 have two, one of the external heating portions is located on the left side of the drawer 100, and the other external heating portion 200 is located on the right side of the drawer 100, so that the temperature of the space between the drawer 100 and the inner container 20 is uniformly increased, and the temperature uniformity in the storage area of the drawer 100 is improved.

In some embodiments of the present application, a fan (i.e., an internal dehumidifying fan described below) 510 is disposed in the storage area 130, and referring to fig. 6, the fan is used to accelerate air flow in the storage area 130, so as to improve temperature uniformity in the storage area 130.

Heating portion 200 adopts the staged control mode, and heating portion 200 and fan cooperation realize the storage area slowly intensifies on guaranteeing temperature uniformity basis, reduce the tropical fruit vegetables degradation risk that the intensification leads to too fast to can reduce the module energy consumption.

Specifically, referring to fig. 8, when the difference between the temperature in the storage area of the drawer 100 and the startup point of the heating part 200 is large, the heating part 200 uses a high startup frequency, and the fan in the storage area adopts a low-speed and long-time operation scheme;

when the difference between the temperature in the storage area of the drawer 100 and the starting point of the heating part 200 is small, the heating part 200 uses a low starting frequency, and the fan in the storage area adopts a high-speed and short-time operation scheme.

In some embodiments of this application, when the fruit vegetables are immature, need adopt the mode of ripening to save, heating portion 200 opens, raises the temperature, helps improving the respiration of fruit vegetables for it is ripe.

When the fruits and vegetables are mature and need to be stored in a fresh-keeping mode, the heating part 200 is closed, so that the temperature in the storage area is kept in the range of the temperature of the fruits and vegetables, the respiration of the fruits and vegetables is inhibited, and the fresh-keeping storage time of the fruits and vegetables is prolonged.

[ temperature control Structure-Cooling Fan ]

When the temperature in the storage area of the drawer 100 is higher than the suitable storage temperature required by fruits and vegetables, the storage area needs to be cooled.

Taking banana storage as an example, if the temperature in the storage area of the drawer 100 is higher than 15 ℃, the heating unit 200 is turned off, and meanwhile, the storage area 130 needs to be cooled down, so that the storage area 130 can reach the target storage temperature range quickly.

In some embodiments of the present application, referring to fig. 10, the drawer 100 is cooled by a rear-mounted refrigeration fan (not shown), specifically, an air cavity communicated with a refrigeration air duct of the refrigerator is arranged on a rear wall of an inner container of the storage space 23 where the drawer 100 is located, the refrigeration fan is arranged in the air cavity, and the air cavity is provided with an air outlet 21 and an air return opening 22 on a side facing the storage space 23.

When the temperature in the storage area reaches the upper limit value of the set temperature, the refrigeration fan is turned on, the refrigeration fan rotates, cold air in the refrigeration air duct is blown out to a space area between the drawer 100 and the inner container 20 through the air outlet 21, the area is cooled, and then the drawer 100 is cooled.

The cold energy between the drawer 100 and the inner container 20 can be directly transmitted to the storage area through the cold energy conduction of the drawer wall; a ventilation opening (not shown) may be formed in the side wall of the drawer 100 to directly introduce the cooling energy into the storage area, and an air door may be provided at the ventilation opening and closed when the temperature does not need to be lowered.

In the cooling process, when the storage temperature of tropical fruits and vegetables is sharply reduced, the cold damage phenomenon is easy to occur, and the sensory quality of the fruits and vegetables is reduced, so that the storage area needs to reduce the cooling rate under the aim of reaching a target storage temperature range as soon as possible.

Therefore, in some embodiments of the present application, the operating power of the refrigeration fan is designed to decrease as the temperature in the storage area decreases.

Along with drawer 100 storage area temperature reduction, the refrigeration fan rotational speed constantly reduces to slow down cooling rate, when the temperature was located suitable storage temperature interval in the storage area, the temperature in the storage area was maintained through the start-stop time of heating portion 200.

Fig. 11 is a flowchart illustrating temperature control in which the cooling fan is combined with the heating part 200.

[ humidity control Structure-humidification portion ]

In some embodiments of the present application, referring to fig. 4, a humidification portion 300 is disposed in the storage area 130, and water vapor is provided into the storage area 130 through the humidification portion 300 to increase the humidity in the storage area 130.

The humidifying part 300 adopts a humidifying water box, which is a common humidifying module in the prior art, and the detailed structure of the humidifying water box is not described in detail in this embodiment.

The humidifying water box is arranged on the side wall of the drawer body 110, so that the space occupied in the storage area is reduced.

When the humidity in the storage area of the drawer 100 is lower than the humidity required by the storage of fruits and vegetables, the humidifying part 300 is opened. For example, taking banana storage as an example, if the humidity in the storage area 130 is lower than 90%, the humidifying unit 300 is turned on to increase the humidity in the storage area to a range of 90-95% humidity required for banana storage.

When the fruit vegetables just put into drawer 100 in, the humidity is lower in the drawer 100, can make the fruit vegetables transpire a large amount of moisture, is unfavorable for the fresh-keeping storage of fruit vegetables, so open humidification portion 300 this moment, just promote the humidity in the drawer when making the fruit vegetables just put into to reduce the transpiration of fruit vegetables.

However, the temperature outside the drawer 100 is low, so that the temperature fluctuation in the drawer can be caused by the large temperature difference between the inside and the outside of the drawer 100, and the condensation is easily caused by the temperature fluctuation due to the large humidity in the drawer 00, which is not beneficial to the storage of fruits and vegetables.

Therefore, in some embodiments of the present application, a cooling portion is designed for cooling water in the humidification water box, the cooling portion is opened when the temperature of the water in the humidification water box reaches a measurement temperature value in the storage region 130, and the humidification water box is opened when the temperature of the water in the humidification water box reaches the measurement temperature value in the storage region 130 or below and the humidity in the storage region reaches a set humidity lower limit value or below.

Through the design, the temperature of water in the humidifying water box is always lower than the temperature in the storage area 130, and the temperature of blown air can be lower than the temperature in the storage area 130 when humidification is performed, so that the condensation phenomenon caused by high humidity in the storage area 130 can be reduced when humidification is performed.

In some embodiments of the present application, at least one circumferential sidewall of the drawer 100 is provided with the heating portion 200, the circumferential sidewall provided with the heating portion 200 is provided with the temperature sensor 700, and a measurement value of the temperature sensor 700 is used as a reference temperature data for comparing the temperature decrease portion with the start and stop. That is, the measured data of the temperature sensor 700 is used as the temperature data in the storage area 130, and the cooling portion determines whether to turn on or off according to the comparison between the temperature data and the water temperature data in the water tank.

In some embodiments of the present application, the heating portions 200 are disposed on a plurality of circumferential side walls of the drawer 100, and each heating portion 200 is started or stopped according to temperature data detected by the corresponding temperature sensor 700, so as to equalize the temperature of each circumferential side wall, that is, the temperature on each circumferential side wall of the drawer 100 is the same, thereby ensuring the uniformity of the temperature in the storage region 130

Referring to fig. 13 and 14, a heating part 200 and a temperature sensor 700 are respectively disposed on a front wall, a rear wall, and a left side wall of the drawer body 110, and a temperature sensor (not shown) for detecting a temperature of water is disposed in the humidifying water box. And when the user puts tropical fruits and vegetables needing to be preserved, starting a preservation mode. The temperature sensors 700 of the inner walls of the drawer 100 operate to sense the temperature of each inner wall, and record the maximum (Tmax) and minimum (Tmin) values of the data obtained by the three temperature sensors of the drawer side wall, and the temperature Tw of the water.

When Tw is larger than Tmax, the three heating parts 200 start to work, and when the temperatures of the three temperature sensors on the inner part of the drawer 100 are consistent and equal to Tw, the heating parts 200 stop working, and the cooling part is opened at the moment to cool the water in the humidifying water box;

when Tmin is not less than Tw and not more than Tmax, the temperature is lower than Tmax, the heating part 200 on the inner wall corresponding to Tmax works, when the temperature is equal to Tmax, the heating part 200 stops working, and at the moment, the temperature reduction part is opened to reduce the temperature of the water in the humidifying water box;

when Tw < Tmin, the heating section 200 is operated to a temperature equal to Tmax.

To the structural design of cooling portion, this application provides two kinds of wind formulas.

First mode of the cooling portion, in some embodiments of the present application, the cooling portion 100 is a cooling fan (not shown) disposed in the humidifying water box, and the cooling fan is turned on to cool water in the water box.

The second mode of the cooling portion, referring to fig. 13 in some embodiments of the present application, the cooling portion is a vent disposed on the drawer 100 and communicated with the humidifying water box, the vent is communicated with a cooling air duct of the refrigerator, the vent is used for conveying cool air into the humidifying water box to cool water in the humidifying water box, and the vent is provided with an air door 310 for closing and opening the vent.

When the humidifying water box needs to be cooled, the air door 310 is opened; when the humidifying water box is not required to be cooled, the air door 310 is closed.

[ humidity control Structure-moisture permeable film, dehumidifying Fan ]

Since the drawer 100 forms the closed storage region 130, the storage temperature of the tropical fruits and vegetables is high, the respiration thereof is inevitable, even if the respiration is low, moisture is generated and stored in the storage region 130, and when the humidity in the storage region 130 is higher than 95%, the tropical fruits and vegetables are easily rotten, so that excessive moisture needs to be discharged.

In some embodiments of the present application, the drawer 100 is provided with a moisture permeable film 400, specifically, the top cover 120 is provided with the moisture permeable film 400, referring to fig. 6, the moisture permeable film 400 is used to allow moisture in the storage area 130 to flow out in one direction to the outside when the humidity in the storage area 130 reaches or exceeds a set humidity upper limit value, so as to reduce the humidity in the storage area 130.

The moisture permeable film 400 is a high-moisture-retention humidity adjusting film which only allows moisture to flow out in one direction, and when the relative humidity at the inner side of the film is lower, the moisture permeable rate is low, so that the moisture loss is prevented; at higher relative humidity, the moisture permeation rate is high and excess water can be drained.

In some embodiments of the present application, with continued reference to fig. 6, the inner side of the top cover 120 is provided with an inner dehumidifying fan 510, the inner dehumidifying fan 510 is disposed near the moisture permeable film 400, and the inner dehumidifying fan 510 is used for exhausting air in the storage area 130 to the outside through the moisture permeable film 400.

When the humidity in the storage area 130 needs to be reduced, the internal dehumidifying fan 510 is turned on to accelerate the air flow in the storage area 130, accelerate the rate of exhausting the air out through the moisture permeable film 400, and accelerate the dehumidifying speed.

In some embodiments of the present application, referring to fig. 10 again, an external dehumidifying fan 520 is further disposed on the outer side of the top cover 120, the external dehumidifying fan 520 is also disposed near the moisture-permeable film 400, and the internal dehumidifying fan 510 and the external dehumidifying fan 520 are configured to operate at different rotation speeds to adjust the difference between the water vapor pressure on the inner side and the water vapor pressure on the outer side of the moisture-permeable film 400, and to adjust the outflow rate of the water in the storage area 130 through the moisture-permeable film 400.

The inner dehumidifying fan 510 and the outer dehumidifying fan 520 operate at different rotational speeds, so that the wind speeds at both sides of the moisture permeable membrane 400 are different, and according to the bernoulli effect, the larger the flow speed of the fluid is, the smaller the pressure is, the water partial pressure at the outer side of the membrane is reduced, and the water permeation can be accelerated.

An internal humidity sensor is arranged in the storage area 130 and used for detecting the humidity in the storage area; an external humidity sensor is provided in the storage space 23 (i.e., outside the drawer 100) to detect humidity in the storage space 23. The inner and

outer dehumidifying fans

510 and 520 are operated at different rotational speeds according to the sensing data of the inner and outer humidity sensors.

Specifically, referring to fig. 12, when the difference between the actual humidity and the preset humidity in the storage area 130 is large, the difference between the rotation speeds of the outer dehumidification fan 520 and the inner dehumidification fan 510 is increased, so as to increase the difference between the water vapor pressures on the inner side and the outer side of the moisture permeable film 400, so as to accelerate the moisture in the storage area 130 to permeate the moisture permeable film, thereby achieving the purpose of rapid dehumidification.

When the difference between the actual humidity and the preset humidity in the storage area is smaller, the difference between the rotating speed of the outer dehumidifying fan 520 and the rotating speed of the inner dehumidifying fan 510 are reduced, so that the difference between the gas pressure at the inner side and the gas pressure at the outer side of the moisture-permeable film 400 is reduced, the speed of the moisture in the storage area 130 penetrating through the moisture-permeable film is reduced, and the humidity in the storage area 130 is stabilized to reach the target humidity.

In some embodiments of the present application, in order to better control humidity, referring to fig. 15 to 18, a magnetically sensitive portion 810 is disposed on an inner side of the inner dehumidifying fan 510, the magnetically sensitive portion 810 is made of a magnetically sensitive material, the magnetically sensitive portion 810 has an extending portion 811 extending outward from the inner dehumidifying fan 510, the extending portion 811 extends toward the moisture permeable membrane 400, and an electromagnetic coil 820 is disposed above the extending portion 811.

The magnetic coil 820 generates magnetism after being electrified, and the extension part 811 displaces towards the direction close to the magnetic coil 820 under the magnetic action generated by the magnetic coil 820, namely, the extension part 811 upwards deflects a certain angle, so that the air flowing out from the storage area 130 is deflected towards the moisture permeable film 400, the moisture in the storage area 130 can more quickly permeate the moisture permeable film 400, and the humidity reduction speed is improved.

In some embodiments, the solenoid coil 820 has multiple operating powers, and the operating power of the solenoid coil 820 increases as the humidity in the storage area 130 increases to increase the dehumidification rate.

Specifically, when the humidity in the storage area 130 is less than 85%, the electromagnetic coil 820 does not work, and when the humidity is greater than 85%, the electromagnetic coil 820 starts to work at 1 st (lower power), and at this time, the electromagnetic coil 820 has certain magnetism, and attracts the extension 811 to shift upward by a small angle, so that the wind blown out from the storage area 130 slightly shifts toward the moisture permeable film 400; when the humidity is higher than 90%, the electromagnetic coil 820 starts to operate at 2 steps (higher power) and has higher magnetism, and at this time, the extension 811 is shifted upward by a larger angle to deflect the wind blown out from the storage area 130 toward the moisture permeable film 400, so that the excess moisture is more quickly permeated through the moisture permeable film 400, and the humidity in the storage area 130 is controlled to be constant at about 90%.

[ removal of ethylene ]

When the temperature and humidity in the storage region 130 are both in the optimum storage range for tropical fruits and vegetables, the storage environment is in a high temperature and high humidity state (14 ℃,90% rh) compared to the humidity of about 4 ℃ and 50% in the conventional refrigerator, and this storage environment causes two problems: firstly, because the sugar content of tropical fruits and vegetables is high and the tropical fruits and vegetables are in a high-temperature and high-humidity environment, the breeding of microorganisms is accelerated, so that the tropical fruits and vegetables are easy to rot; and secondly, the high-temperature and high-humidity environment can increase the release of ethylene from tropical fruits and vegetables, the ethylene can promote the respiratory transition of the tropical fruits and vegetables, the respiration effect is enhanced, the nutrient consumption of the tropical fruits and vegetables is accelerated, and the storage is not facilitated.

Aiming at the problem that microorganisms are easy to breed, a sterilization technology stronger than that under the refrigeration condition of 4 ℃, such as an ion sterilization technology and the like, is needed to be used, active ingredients such as negative ions, oxygen free radicals, hydroxyl free radicals and the like can be generated, the operation time of the sterilization module is longer, and the better sterilization effect is realized by matching with air path circulation.

The ethylene has double functions for tropical fruits and vegetables, and when the tropical fruits and vegetables are not ripe, the ethylene can promote the fruits to be ripe, so that the taste of the fruits is better; ethylene accelerates spoilage of tropical fruits and vegetables when they mature. The storage area in the drawer is of a closed structure, and ethylene cannot penetrate through the moisture-permeable film, so that the special area can accumulate ethylene and has the function of ripening tropical fruits and vegetables; when the tropical fruits and vegetables are ripe, the ethylene is unfavorable for storage of the tropical fruits and vegetables, and the ethylene can be oxidized and removed by oxygen radicals generated by the ion sterilization device, so that the preservation period of the tropical fruits and vegetables is prolonged.

In summary, in some embodiments of the present application, the ethylene removing portion 600, which is specifically an ion sterilization device, is disposed in the storage area 130, on one hand, active ingredients such as negative ions, oxygen radicals, hydroxyl radicals and the like generated by the ethylene removing portion have a strong sterilization effect, so as to avoid breeding of microorganisms in the storage area, and on the other hand, the oxygen radicals generated by the ethylene removing portion can oxidize and remove ethylene, so as to achieve an effect of prolonging the preservation period of tropical fruits and vegetables.

That is, the ion sterilization device is opened at two time points, one is that when tropical fruits and vegetables are just put into the drawer, the storage area 130 is sterilized first, so that the breeding of microorganisms is avoided; and the second is that after the fruits and vegetables are ripe in the heat band in the storage area 130, the ion sterilization device is started, and ethylene is removed while the sterilization effect is realized, so that the storage and preservation period of the fruits and vegetables is prolonged.

[ fruit and vegetable maturity detection and control ]

Under the storage environment of a household, the maturity of the purchased tropical fruits and vegetables is difficult to control by consumers. The fruits and vegetables can be over-ripe quickly when being placed at normal temperature, the cold damage of tropical fruits and vegetables can be caused by the low-temperature environment refrigerated by a refrigerator, even if consumers place the tropical fruits and vegetables at 10-15 ℃ which is mostly suitable for storage, the maturity of the tropical fruits and vegetables is difficult to be controlled to be optimal only by temperature, and the time for the fruits and vegetables to stay at the optimal maturity is prolonged to the maximum extent.

The fruits and vegetables in different state maturity need to use different storage environments. For example, if the fruits and vegetables are not ripe, the fruits and vegetables need to be ripened, and the temperature, the humidity and the ethylene content in the storage area need to be correspondingly improved, so that the fruits and vegetables reach the maturity suitable for eating as soon as possible; if the fruits and vegetables are mature, the fruits and vegetables need to be preserved, and at the moment, the temperature, the humidity and the ethylene content in a storage area need to be correspondingly reduced so as to inhibit the respiration of the fruits and vegetables and prolong the preservation storage time of the fruits and vegetables; if the fruits and vegetables are not ripe, and the consumers want the fruits and vegetables to be ripe slowly, the breathing of the fruits and vegetables can be inhibited by adopting the means of reducing the temperature, the humidity and the ethylene content in the storage area, and the storage time of the fruits and vegetables is prolonged.

Therefore, another important point of the present invention is to obtain the maturity of tropical fruits and vegetables through detection and analysis, and control the operations of the heating part 200, the humidifying part 300, the ethylene removing part 600, and other parts according to the maturity and the storage requirements of users, so as to provide a most suitable storage environment for the fruits and vegetables.

The fruit and vegetable has a suitable storage temperature range and a cold damage critical temperature range, as shown in fig. 1 and fig. 2. The storage mode of the refrigerator to the fruits and vegetables in the application is as follows:

when the optimal maturity of the fruits and vegetables is not achieved through system identification and analysis, the refrigerator enters a ripening accelerating mode, namely ripening of the fruits and vegetables is performed, the heating part 200 is opened or closed according to the temperature in the storage area 130, so that the temperature in the storage area 130 is within a storage temperature range suitable for the fruits and vegetables, meanwhile, the ethylene removing part 600 is closed, the ethylene content is increased, the respiration effect of the fruits and vegetables is improved, and the ripening is accelerated.

When the system obtains the optimal maturity of the fruits and vegetables according to analysis, the refrigerator enters a fresh-keeping mode, namely, the fruits and vegetables are subjected to fresh-keeping storage, the heating part 200 is opened or closed according to the temperature in the storage area, so that the temperature in the storage area 130 is within the critical temperature range of cold damage of the fruits and vegetables, meanwhile, the ethylene removing part 600 is opened, the temperature is reduced, the ethylene content is reduced, the respiration of the fruits and vegetables is inhibited, and the time that the fruits and vegetables stay at the optimal maturity is prolonged to the maximum extent.

For detecting the maturity of the fruits and vegetables, a color sorting method is adopted, specifically, a photoelectric detection module (not shown) is arranged in the storage area 130 and used for acquiring the color change of the fruits and vegetables in the storage area, and the system judges the maturity of the fruits and vegetables according to the color change so as to control the operation of the heating part 200, the humidifying part 300 and the ethylene removing part 600.

The photoelectric detection module comprises a detection element, a color selection mode and a background device.

The photoelectric detection module is applied to a detection system in a color sorter, and the principle of utilization is that under the action of a light source, a photoelectric color device receives optical signals from an object to identify the difference of optical characteristics of detected articles.

The color selector is applied in 1980 s, is a common device in agricultural production at present, and is applied to sorting of different-color particles of rice, coarse cereals, tea leaves and seeds, but the color selector also comprises a feeding system, and the different-color particles are identified by a photoelectric detection system and are screened out.

The photoelectric detection module in the method is carried in the refrigerator chamber, the color change of the fruits and vegetables in the chamber is obtained by relying on optical signals reflected by the fruits and vegetables under the irradiation of the light source, and the light source utilized by the system only needs visible light, so that the cost is relatively low, and the method has feasibility.

Common incandescent lamps, LED lamps and halogen tungsten lamps can be selected as the light source of the photoelectric detection module for irradiating stored tropical fruits and vegetables.

The background plate can be used as a background variable device, and the color can be adaptively adjusted.

The detection element is irradiated by visible light, and a double-line CCD (solid-state imaging sensor) receives reflected light of tropical fruits and vegetables irradiated by a light source.

This embodiment adopts the photoelectric detection module to acquire the colour degree of indoor fruit vegetables in room, turns into electrical signal. Specifically, referring to fig. 19, a light source is used for illuminating the chamber, the fruits and vegetables are observed through light rays refracted by the background plate, the fruits and vegetables are shot by the double-linear-array CCD camera, and the shot color signals of the fruits and vegetables and the color difference signals formed by contrast colors of the background plate are obtained. When the color difference of the fruits and vegetables is smaller than that of the mature fruits and vegetables, the photoelectric receiver does not generate pulse signals when the fruits and vegetables pass through the detection point; when the color of the fruit and vegetable is different from that of the mature fruit and vegetable, the optical signal is abnormal and generates a pulse signal. After the distinguishing operation, an electric control signal is output.

When the photoelectric detection module does not generate pulse signals after detecting the fruits and vegetables in the compartment, the fruit and vegetable enter a maturation period, and a fresh-keeping storage mode is started.

If pulse signals are generated after the photoelectric detection module detects the fruit and vegetable in the chamber, the fruit and vegetable are not mature, and the ripening acceleration storage mode is started.

In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A refrigerator, comprising:

a box body;

the inner container is arranged in the box body, and the inner container forms a plurality of storage spaces for storing articles;

characterized in that, the refrigerator still includes:

the drawer is arranged in the storage space, and a closed storage area for storing fruits and vegetables is formed in the drawer;

a heating section for adjusting a temperature in the storage area;

the moisture permeable film is arranged on the drawer and is used for allowing the moisture in the storage area to flow out to the outside in a single direction when the humidity in the storage area is higher than the external humidity so as to adjust the humidity in the storage area;

an ethylene removal unit provided in the storage region for removing ethylene in the storage region;

and the photoelectric detection module is arranged in the storage area and used for acquiring the color change of the fruits and vegetables in the storage area, and the system judges the maturity of the fruits and vegetables according to the color change so as to control the operation of the heating part and the ethylene removing part.

2. The refrigerator according to claim 1,

the fruits and vegetables have a suitable storage temperature range and a cold injury critical temperature range;

3. The method of claim 1,

the heating part is arranged on the inner container wall of the storage space where the drawer is located and used for adjusting the temperature of the storage space where the drawer is located, the heating part comprises a heating wire, a heat reflecting layer and a heat insulating layer, the heat insulating layer is arranged on the inner container wall, the heat reflecting layer is arranged on the heat insulating layer, and the heating wire is arranged on the heat reflecting layer.

4. The refrigerator according to claim 1,

an air cavity communicated with a refrigerating air duct of the refrigerator is arranged on the rear wall of the inner container of the storage space where the drawer is located, a refrigerating fan is arranged in the air cavity, and an air outlet and an air return opening are formed in one side, facing the storage space, of the air cavity;

the refrigeration fan is opened when the temperature in the storage area reaches the upper limit value of the set temperature.

5. The refrigerator according to claim 1,

the top wall of the drawer is provided with the moisture permeable film and an inner dehumidifying fan, the inner dehumidifying fan is close to the moisture permeable film, the inner dehumidifying fan is arranged on the inner side of the top wall of the drawer, and the inner dehumidifying fan is used for discharging air in the storage area outwards.

6. The refrigerator according to claim 5,

the inside of interior dehumidification fan is equipped with the sensitive portion of magnetism, the sensitive portion of magnetism have stretch out in interior dehumidification fan's extension, the extension orientation moisture permeable membrane extends, the top of extension is equipped with solenoid, the extension is in under the produced magnetic action of solenoid is to being close to solenoid's direction displacement takes place.

7. The refrigerator according to claim 6,

the electromagnetic coil has multi-gear working power, and the working power of the electromagnetic coil increases along with the increase of the humidity in the storage area.

8. The refrigerator according to claim 5,

an outer dehumidifying fan is arranged on the outer side of the top wall of the drawer and is close to the moisture permeable membrane, and the inner dehumidifying fan and the outer dehumidifying fan are used for operating at different rotating speeds to adjust the water vapor pressure difference between the inner side and the outer side of the moisture permeable membrane and adjust the flow rate of the water in the storage area flowing out through the moisture permeable membrane.

9. The refrigerator according to any one of claims 1 to 8,

a humidifying water box is arranged in the storage area and used for adjusting the humidity in the storage area;

10. The refrigerator according to claim 9,

the cooling part is a cooling fan arranged in the humidifying water box; alternatively, the first and second electrodes may be,

for locating on the drawer and with the vent of humidification water box intercommunication, the vent communicates with the refrigeration wind channel of refrigerator, the vent be used for to carry air conditioning in the humidification water box with right water cooling in the humidification water box, vent department is equipped with and is used for closing and opening the air door of vent.