CN113324366A

CN113324366A - Refrigerator with a door

Info

Publication number: CN113324366A
Application number: CN202010128812.XA
Authority: CN
Inventors: 张雪颖; 陈磊; 王国靖; 中野明; 冯佳丽
Original assignee: Panasonic Intellectual Property Management Co Ltd
Current assignee: Panasonic Intellectual Property Management Co Ltd
Priority date: 2020-02-28
Filing date: 2020-02-28
Publication date: 2021-08-31

Abstract

The invention provides a refrigerator, which is provided with a humidifying unit which is arranged in an independent chamber and converts water into water mist, wherein the humidifying unit comprises: an ultrasonic transducer capable of vibrating at a predetermined frequency; a metal perforated plate provided on the water supply side of the ultrasonic vibrator, and vibrating together with the ultrasonic vibrator to generate a mist; and a water supply tank capable of storing water for spraying and bringing the water for spraying into contact with one surface of the porous metal plate. According to the present invention, the mist can be supplied into the independent compartment without the mist supply passage, and the humidity control can be performed rapidly and stably.

Description

Refrigerator with a door

Technical Field

The invention relates to a refrigerator, in particular to a refrigerator with a humidifying function.

Background

In recent years, a household refrigerator is provided with a compartment for storing vegetables, fruits, and the like. By cooling the compartment to an appropriate temperature and controlling the interior thereof to be highly humidified, the freshness of vegetables, fruits, and the like can be maintained for a long period of time. As a mechanism for increasing the humidification level, for example, a system of spraying mist by a humidifier is used.

In the refrigerator having the humidifying function disclosed in the prior art, a humidifying device is disposed on a side surface of a vegetable compartment, and after mist is generated on a water surface of a water tank of the humidifying device, the mist is guided into the vegetable compartment through a mist channel between the humidifying device and the vegetable compartment by a fan, so that high humidification of the vegetable compartment is realized.

However, in such a refrigerator having a humidifying function, the humidifying device occupies a large space, and requires a fan and a mist sending passage to send mist into the vegetable room, thereby complicating the structure.

Disclosure of Invention

The present invention has been made in view of the above problems, and an object thereof is to provide a refrigerator in which a space occupied by a humidifying unit in a storage compartment is small.

In order to achieve the above object, a refrigerator according to one aspect of the present invention includes a humidifying unit provided in an independent compartment and converting water into mist, the humidifying unit including: an ultrasonic transducer capable of vibrating at a predetermined frequency; a metal perforated plate provided on the water supply side of the ultrasonic vibrator, and vibrating together with the ultrasonic vibrator to generate a mist; and a water supply tank capable of storing water for spraying and bringing the water for spraying into contact with one surface of the porous metal plate. According to the structure, the mist can be sent into the independent chamber without a mist sending channel, and the humidity control is rapidly and stably carried out, so that the space occupied by the humidifying unit is reduced, and the storage space of the refrigerator is increased.

In addition, the refrigerator according to the present invention further includes: a refrigerated space; an evaporator for refrigerating the refrigerating space; an air inlet for introducing cold air from the evaporator into the refrigerated space; a return air inlet for returning air flowing through the refrigerated space to the evaporator; and the independent chamber is arranged in the refrigerating space and can independently control the humidity, the independent chamber is provided with a heat insulation layer separated from the refrigerating space around the independent chamber, and the air return opening and the independent chamber are not overlapped when viewed from the front and back directions of the refrigerator. Therefore, the cold air loop can bypass the independent chamber, thereby reducing the cold air sedimentation around the independent chamber and the influence on the temperature of the independent chamber, and avoiding the dew condensation in the independent chamber.

In the refrigerator according to the present invention, the humidification unit is provided on a side surface or a top portion of the independent chamber, and the humidification unit directly sprays the mist into the independent chamber through a spray port. Therefore, the moisture in the humidifying unit can be sufficiently diffused into the humidifying chamber, and the humidifying effect is increased.

In the refrigerator according to the present invention, the independent compartment is provided in a compartment having a refrigerating temperature zone, or the independent compartment is a separate compartment in the refrigerator. Thus, the position of the independent compartment can be flexibly set according to different models.

In the refrigerator according to the present invention, the ultrasonic transducer is formed in a circular hole shape, and the metal porous plate is provided at least in a hole portion of the ultrasonic transducer. Therefore, the moisture in the humidifying unit can be sufficiently diffused into the humidifying chamber, and the humidifying effect is increased.

In addition, in the refrigerator, the particle size of the water mist is 3-10 μm. This makes it possible to stably humidify the independent compartments, thereby enhancing the humidifying effect.

In addition, in the refrigerator, the particle size of the water mist is 4-6 μm. This can stably humidify the individual compartments and prevent condensation of mist.

In the refrigerator according to the present invention, the amount of mist sprayed per unit time of the humidifying unit can be changed by adjusting the voltage applied to the ultrasonic transducer. Therefore, the spraying amount can be quickly adjusted, and the storage requirements of users on various articles are met.

In the refrigerator of the present invention, the spray amount is controlled to be 0.2 to 1.5 ml/min. This makes it possible to stably humidify the independent compartments, thereby enhancing the humidifying effect.

In the refrigerator of the present invention, the spray amount is controlled to be 0.4 to 0.8 ml/min. This can stably humidify the individual compartments and prevent condensation of mist.

In the refrigerator of the present invention, the water for spraying is an antibacterial water containing an antibacterial and antifungal agent component, or the water for spraying is a liquid containing a deodorant or aromatic agent component, or the water for spraying is a liquid containing an antistaling agent component. Therefore, the humidity of the independent chamber can be adjusted, and the functions of antibiosis, deodorization, freshness preservation and the like can be simultaneously realized.

Drawings

Fig. 1 is a schematic configuration diagram showing a refrigerator according to the present invention.

Fig. 2 is a schematic configuration diagram showing a humidifying compartment of a refrigerator according to the present invention.

Fig. 3 is a perspective view showing a schematic configuration of a humidification chamber of a refrigerator according to the present invention.

Fig. 4 is a schematic configuration diagram showing a humidifying unit of a refrigerator according to the present invention.

Fig. 5 is a perspective exploded view showing a schematic configuration of a humidifying unit of a refrigerator according to the present invention.

Fig. 6 is a schematic view showing an opening of a humidifying drawer of a refrigerator according to the present invention.

Fig. 7 is a schematic diagram showing that the humidifying unit of the refrigerator according to the present invention is held by the cover plate.

Fig. 8 is a schematic perspective exploded view showing that the humidifying unit of the refrigerator according to the present invention is held by the cover plate.

Fig. 9 is a schematic diagram showing a lead of an electric component of a humidifying unit of a refrigerator according to the present invention.

Fig. 10 is a schematic view showing a metal sheet of a power supply part of a refrigerator according to the present invention.

Fig. 11a is a schematic view showing a spray member of a refrigerator according to the present invention. Fig. 11b is a cross-sectional view of the spray element shown in fig. 11 a.

Fig. 12 is a schematic view showing a humidifying drawer of a refrigerator according to the present invention.

Fig. 13 is a schematic exploded perspective view showing a humidifying drawer of a refrigerator according to the present invention.

Fig. 14 is a schematic view illustrating an air path structure of the refrigerator according to the present invention.

Detailed Description

The invention is explained in more detail below with reference to the figures and examples.

Preferred embodiments of a processing device and a refrigerator according to the present invention will be described in detail below with reference to the accompanying drawings. In the description of the drawings, the same or corresponding portions are denoted by the same reference numerals, and redundant description thereof will be omitted.

< Structure of refrigerator >

As shown in fig. 1, the refrigerator 1 is internally divided into a plurality of storage compartments by a heat insulating material, for example, a foamed heat insulating material such as rigid polyurethane or foamed polystyrene. The plurality of storage compartments include, for example, a refrigerating compartment 2, a multipurpose independent compartment 3, a freezing compartment 4, and a control part 5 from top to bottom.

The refrigerating chamber 2 is a storage chamber for refrigerating and storing articles, and the temperature inside the chamber is generally set to a refrigerating temperature range, usually 1 to 10 ℃, so as not to freeze the stored articles.

The multifunctional independent room 3 is a storage room whose temperature can be switched as needed, and for example, can be switched between the above-described refrigerating temperature zone, freezing temperature zone, or other predetermined temperature zone.

The freezing chamber 4 is a storage chamber for freezing and storing articles, and the temperature inside the chamber is generally set to a freezing temperature range, typically-23 ℃ to-15 ℃. In order to improve the state of cryopreservation, the minimum temperature may be set to any value between-30 ℃ and-23 ℃.

Further, the plurality of storage compartments of the refrigerator 1 are not limited to the refrigerating compartment 2, the multifunctional independent compartment 3, and the freezing compartment 4 described above, and may include compartments having other various functions.

As shown in fig. 1, the refrigerator 1 further includes a humidification chamber 100 which may be provided in an independent space of the refrigerating chamber 2 or in an independent chamber other than the refrigerating chamber (for example, a multifunctional independent chamber 3). The humidifying unit (humidifying device) 110 in the figure is provided on the side surface of the humidifying chamber 100, but is not limited thereto, and may be provided on the top surface of the humidifying chamber 100. The position of the humidification chamber 100 is not particularly limited as long as moisture can be supplied.

< humidifying Chamber construction >

As described above, the refrigerator 1 is further provided with the humidifying compartment 100 (i.e., the storage compartment) for storing items to be humidified such as vegetables, fruits, and red wine. By cooling the humidification chamber 100 to an appropriate temperature and controlling the humidification chamber to have a high humidity inside, the freshness of the vegetables, fruits, red wine, and the like stored in the humidification chamber 100 can be maintained. In the present invention, as a means for increasing the humidification level, a method of spraying mist by the humidifying device 110 is adopted.

Fig. 2 is a schematic configuration diagram showing a humidifying compartment of a refrigerator according to the present invention. Fig. 3 is a perspective view showing a schematic configuration of a humidification chamber of a refrigerator according to the present invention.

As shown in fig. 2, the humidification chamber 100 includes a drawer 101 and a lid 102 disposed at an opening of the drawer 101, and the inside of the humidification chamber 100 (i.e., the internal space of the humidification drawer 101) can be formed as a closed space by the lid 102. Here, the cover plate 102 may be a separate layer that thermally separates the humidification chamber 100 from the refrigeration space around the humidification chamber.

In the present embodiment, the ice-making water supply tank 6 and the humidifying unit 110 may be provided on the side of the humidifying drawer 101. The ice making chamber (not shown) makes ice from an ice maker (not shown) using water supplied from the ice making water supply tank 6, and stores the ice in a container at a lower portion of the chamber. An extra space exists between the ice-making water supply tank 6 and the cover plate 102, and the humidifying unit 110 is provided in the extra space between the cover plate 102 and the ice-making water supply tank 6. Thus, it is not necessary to additionally provide a configuration space for the humidifying unit 110, thereby increasing a storage space of the refrigerator. Here, in a refrigerator having no ice making function, the ice making water supply tank 6 may be replaced with a small article storage box for storing small articles.

The humidification unit 110 includes a humidification water tank 111, and the humidification water tank 111 is provided on the top of the side surface of the humidification chamber 100. Specifically, the humidification water tank 111 is provided on a side surface of the humidification drawer 101 and is located on a side close to the cover 102 in the vertical direction. For example, the humidification water tank 111 is held below the cover plate 102 via a holder 112. The width of the humidification water tank 111 is preferably substantially the same as the width of the water supply tank 6. The water supply tank 6 and the humidification water tank 111 are detachable in the front-rear direction of the refrigerator.

The humidification chamber 100 may further include a temperature compensation device (heating device) and a temperature/humidity sensor. The temperature compensation device may be provided in the inner container of the refrigerator, or may be provided in the humidification drawer 101 of the humidification chamber 100. The temperature and humidity sensor is used to monitor the temperature and humidity in the humidification chamber 100. When the temperature and humidity do not reach the user-set temperature, the supply amount of the mist of the humidifying unit 110 may be increased, and the temperature may be rapidly raised to a desired temperature by the temperature compensating device.

< Structure of humidifying Unit >

As shown in fig. 4, the humidifying unit 110 includes: a humidifying water tank 111 for supplying humidifying water; and a spray unit 113 for converting the water in the humidifying water tank 111 into mist.

The humidification water tank 111 is preferably located at a position higher than 1/2 of the humidification chamber 100. The humidification water tank 111 is not limited to being provided on the side surface of the humidification chamber 100, and may be provided below the cover plate 102, and the cover plate 102 is, for example, a partition plate between the humidification chamber 100 and the upper chamber.

Fig. 5 is a perspective exploded view showing a schematic configuration of a humidifying unit of a refrigerator according to the present invention. The humidifying water tank 111 has an opening 114. At a position corresponding to the opening hole 114, a spray member 113 is provided. The spray element 113 is sandwiched between the side surface of the humidification water tank 111 and the mounting portion 115, and is electrically connected to the electrical component 116 through a wire 113 a. The mounting portion 115 is provided with an opening 115a corresponding to the opening 114. The fitting portion 115 fits the spray member 113 on the one hand, and hides the wiring 113a on the other hand, thereby preventing the wiring 113a from being short-circuited.

Fig. 6 is a schematic view showing an opening of a humidifying drawer of a refrigerator according to the present invention. As shown in fig. 6, an opening 101a is provided at a position corresponding to the spray member 113 of the humidification drawer 101. The diameter of the opening 101a is preferably larger than the spray orifice of the spray element. Further, rails 101b are provided on both sides of the humidifying drawer 101, and a self-locking structure is preferably provided on the rails 101, whereby the drawer 101 can be prevented from being ejected. Further, it is preferable that an automatic closing structure is provided on the rail 101, by which the drawer is automatically returned to a closed state when it is closed to a certain position, on one hand, the drawer 101 can be prevented from being incompletely closed, and on the other hand, it is ensured that the ejection port of the humidification unit 110 is aligned with the opening 101a of the humidification drawer 101.

< holding of humidifying Unit >

Fig. 7 is a schematic diagram showing that the humidifying unit of the refrigerator according to the present invention is held by the cover plate. Fig. 8 is a schematic perspective exploded view showing that the humidifying unit of the refrigerator according to the present invention is held by the cover plate. Fig. 9 is a schematic diagram showing a lead of an electric component of a humidifying unit of a refrigerator according to the present invention. Fig. 10 is a schematic view showing a metal sheet of a power supply part of a refrigerator according to the present invention.

As shown in fig. 7 and 8, the humidification unit 110 is held on one side of the partition layer (cover plate) 102 via a holder 112. The partition layer 102 has a power supply unit 103 connected to a main circuit board of the refrigerator.

The humidification unit 103 includes: an electric component 116 for supplying power to the atomizing element 113, a holder 112 is attached to the partition 102 and holds the humidification water tank 111, and the humidification water tank 111 is attached to the holder 112, whereby the power supply unit 103 is electrically connected to the electric component 116. Here, the power supply unit 103 and the electrical unit 116 are preferably electrically contacted on the back surface side of the humidification water tank 111. Further, it is preferable that the power supply portion 103 and the electrical mounting portion 116 make electrical contact on the back surface side of the holder 112.

The holder 112 has a U-shaped cross section when viewed from the front of the refrigerator, and the humidifying water tank 111 is attached to the holder 112, so that the pin 116a of the electrical component 116 and the metal plate 103a of the power supply unit 103 are in contact with each other in the left-right direction of the refrigerator. The holder 112 has an opening (not shown) through which the electrical component 116 is inserted when viewed from the back of the refrigerator. The width of the opening is preferably 10mm or less, whereby fingers can be prevented from being inserted thereinto. Specifically, when the user takes out the humidifying unit 110 to perform water replenishment or cleaning, the back surface of the holder 112 is accessible from the front surface of the refrigerator. On the back side of the holder 112, a charged power feeding portion 103 is further provided. Here, the feeding portion 103 is provided on the spacer layer 102, for example. By setting the opening on the back surface of the holder 112 to 10mm or less, the power supply unit 103 can be prevented from being touched by the user's hand by mistake.

Preferably, the metal plate 103a is disposed obliquely with respect to the front and rear direction of the refrigerator, and an elastic member is installed at the rear thereof. This makes it possible to more reliably provide electrical connection between the power supply unit and the electrical component.

Preferably, the electrical part 116 of the humidifying unit 110 protrudes toward the rear of the humidifying unit, passes through the opening of the holder 12, and contacts the power supply part 103.

Alternatively, the power supply unit 103 and the electrical component unit 116 may be turned on or off by a magnetic switch. In this case, the power supply unit 103 and the power installation unit 116 may be disposed to face each other in the front-rear direction of the refrigerator.

According to the holder 112 of the present invention, the humidification unit 110 is powered on after being mounted to the holder 112, and is powered off immediately after the humidification unit 110 is removed from the holder. Thereby ensuring the electricity utilization safety of users.

< Structure of ultrasonic transducer >

Fig. 11a is a schematic view showing a spray member of a refrigerator according to the present invention. Fig. 11b is a cross-sectional view of the spray element shown in fig. 11 a. The humidifying unit of the present invention includes: an ultrasonic transducer 113 capable of vibrating at a predetermined frequency; a metal perforated plate 113a provided on the water supply side of the ultrasonic transducer, and vibrating together with the ultrasonic transducer to generate a mist; and a humidifying water tank 111 capable of storing water for spraying and bringing the water for spraying into contact with one surface of the metal porous plate 113 a. Here, the water supply side of the ultrasonic transducer means the side of the ultrasonic transducer where the humidifying water tank 111 is located, that is, the side opposite to the spraying direction. The water for spraying may be tap water, boiled water, mineral water, purified water, etc., or may be an antibacterial water containing an antibacterial and antifungal agent component, or may be a liquid containing a deodorant or aromatic agent component, or may be a liquid containing a preservative component.

Specifically, the atomizing element 113 of the present invention is, for example, an ultrasonic vibrator (piezoelectric ceramic resonator element), and as shown in fig. 11, the ultrasonic vibrator 113 is, for example, a circular sheet-like member, and a porous plate 113a having a plurality of micropores is formed in the center portion thereof. Electrodes 113b are formed on the front and back surfaces of the outer periphery of the porous plate 113 a. The ultrasonic transducer 113 is ultrasonically vibrated by feeding power to the electrode 113b on the front and back surfaces through the two power feeding terminals 115, respectively. By this ultrasonic vibration, the water supplied from the water tank 111 to the porous plate 113a is converted into mist, and the mist is caused to be ejected toward the spraying side (the side of the humidification compartment 100) via the plurality of micropores in the porous plate 113 a. This makes it possible to feed the mist into the humidification chamber 100 without using a mist feed passage, and to perform humidity control quickly and stably.

The inventors of the present invention conducted experiments on the relationship between the particle size of mist droplets and the amount of mist and the relationship between the particle size of mist and the risk of condensation, and the results are shown in tables 1 and 2.

TABLE 1

Particle size (. mu.m)	Amount of spray (g/min)
		3	0.05-0.1
5	0.3-0.6
		6	0.4-0.8
8	0.6-1.0
		10	0.8-1.5
15	1.0-2.0

TABLE 2

Particle size (. mu.m)	Risk of condensation
		3	Does not form dew
5	Does not form dew
		6	Does not form dew
8	With risk of condensation
		10	Dew condensation
15	Dew condensation

Although the size of the plurality of micropores of the porous plate 113a is not particularly limited, as is clear from the results of tables 1 and 2, the size of the generated mist droplets is preferably 3 to 10 μm, more preferably 4 to 6 μm, so that the mist is less likely to condense on the vegetables and fruits, and the vegetables and fruits are prevented from being rotted due to condensation. In addition, the spray amount can range from 0.2 to 1.5 ml/min; the preferred range is 0.4-0.8 ml/min.

The size of the spray particle diameter is determined by the size of the pore diameter of the porous plate, and the larger the pore diameter, the larger the spray particle diameter. The number of openings can be adjusted by adjusting the area of the perforated plate and the hole pitch, and the amount of spray can be adjusted. In addition, in the safe voltage range of the circuit board, the higher the voltage is, the larger the spraying amount is, and the longer the spraying distance is.

< Structure of humidifying drawer >

The humidification chamber includes a lid (cover) 102 and a humidification drawer 101, and a seal (not shown) is provided between the lid 102 and the humidification drawer 101, and the seal may be made of a material such as rubber, for example. As shown in fig. 12, the side wall of the cover plate 102 may be provided with a wedge shape that protrudes downward the further inward the side wall. At this time, the side wall of the humidification drawer 101 is formed in a shape having a height that decreases toward the back side corresponding to the lower portion of the cover plate 102. By providing the side wall of the cover 102 and the side wall of the humidification drawer 101, the internal space of the humidification drawer 101 can be reliably formed into a sealed space by simply pushing the humidification drawer 101 inward. Further, when the humidification drawer 101 is pulled out, the humidification drawer 101 can be easily pulled out because the frictional force between the upper end of the side wall of the humidification drawer 101 and the seal member 102a is reduced. Further, the bottom surface of the humidifying drawer 101 may be formed in a concave-convex shape, for example, so that vegetables and fruits can be prevented from being damaged by contact with water accumulated on the bottom surface of the humidifying drawer 101.

Fig. 13 is a schematic exploded perspective view showing a humidifying drawer of a refrigerator according to the present invention. The humidifying drawer 101 may have a double-layered structure including an outer case 101a and an inner case 101 b. The outer casing 101a may be in the shape of a drawer slightly larger in size than the inner casing 101 b. A hollow insulation layer made of air may be formed between the outer casing 101a and the inner casing 101 b. Specifically, the outer casing 101a and the inner casing 101b may be provided with hollow layers on both the bottom surface and the side surface. As shown in fig. 13, a blocking rib 104 extending in the vertical direction is provided around the inner case 101 b. The blocking ribs 104 may serve to reinforce the strength of the inner case 101b and block the flow of air within the hollow layer. The position of the blocking rib 104 is not limited to this, and may be provided on the housing 101 a. The humidification drawer 101 may further include a handle portion 101c located on the front side of the refrigerator. The handle portion 101c may also have a heat insulating hollow layer with a recessed portion at the bottom thereof for allowing a finger to be inserted. Thus, the handle portion 101c can function as both a push-pull portion and a heat insulating portion.

< air duct Structure >

Fig. 14 is a schematic view illustrating an air path structure of the refrigerator according to the present invention. As shown in fig. 14, the refrigerator of the present invention includes: a refrigerated space; an evaporator 11 for refrigerating the refrigerating space; an air inlet (not shown) for introducing cool air from the evaporator into the refrigerating space; a return air inlet 12 for returning air flowing through the refrigerated space to the evaporator; and a humidification chamber (humidification chamber) 100 which is provided in the refrigerating space and is capable of independently controlling humidity, the humidification chamber having a heat insulating layer which is isolated from the refrigerating space around the humidification chamber, and the return air opening 12 and the humidification chamber 100 not overlapping each other when viewed from the front-rear direction of the refrigerator. The return air opening 12 and the humidification chamber 100 are preferably provided at a predetermined distance in the height direction. Here, the predetermined interval is, for example, 1cm or more, preferably 3cm or more, but is not limited thereto, and an appropriate distance may be set depending on the model as long as the position of the return air port can be separated from the humidification chamber 100.

Preferably, the humidification chamber 100 is disposed at the bottom of the refrigerating space, the top surface of the humidification chamber is provided with a heat insulation layer isolated from the refrigerating space above the humidification chamber, and the air return opening 12 is disposed above the humidification chamber 100.

Preferably, the evaporator 11 and the humidification chamber 100 do not overlap, i.e., have no overlapping portion, as viewed from the front-rear direction of the refrigerator. Preferably, the evaporator 11 is disposed above the humidification chamber 100.

By providing the evaporator 11 and the air return opening 12 above the humidification compartment 100, the cold air circuit can bypass the humidification compartment 100, thereby reducing the precipitation of cold air around the humidification compartment 100 and the influence on the temperature of the humidification compartment 100, and avoiding the occurrence of dew condensation in the humidification compartment 100.

In the example shown in fig. 13, the return air opening 12 located at the bottom extends in the left-right direction of the refrigerator so as to cover substantially the entire width direction, but the present invention is not limited thereto, and the return air opening 12 at the bottom may be divided into two left and right portions each extending in the width direction of the refrigerator.

As shown in fig. 13, the return air opening 12 may be further provided at a corner of the refrigerating space, thereby further increasing the return air area.

In addition, the refrigerator of the present invention may further include a fan for blowing/sucking air to/from the evaporator, and the fan may be operated for a predetermined time after the refrigerating space reaches the cooling temperature. This makes it possible to better circulate the cold air in the refrigerating space and to prevent condensation from occurring in the humidification chamber 100 due to the cold air.

According to the refrigerator in one aspect of the invention, the water in the humidifying water tank is converted into water mist through the ultrasonic vibrator and sprayed to the humidifying drawer, so that the rapid humidity adjustment of the humidifying chamber can be realized under the condition that the occupied volume of the humidifying device is reduced as much as possible.

According to the refrigerator of one aspect of the present invention, the humidifying device can be easily taken out, facilitating the user's washing. And because the humidifying device is powered off immediately after being taken down, the power utilization safety of a user is ensured.

According to the refrigerator in one aspect of the invention, the cold air circulation flow path passing through the evaporator bypasses the humidification chamber through the improvement of the air path, so that the problem of condensation in the humidification chamber is avoided.

According to the refrigerator in one aspect of the invention, the humidifying drawer adopts a double-layer heat insulation structure, and the humidifying drawer is isolated from the surrounding refrigerating space through the heat insulation layer, so that cold air in the refrigerating space is prevented from entering the humidifying compartment, and the problem of condensation in the humidifying compartment is avoided. In addition, the humidification drawer and the cover body are sealed through the sealing layer, the sealing effect in the humidification chamber is further improved, and the temperature and humidity control effect in the humidification chamber is guaranteed.

According to the refrigerator provided by the invention, the temperature and the humidity in the humidifying chamber can be controlled in a wider range through the humidifying device and the temperature compensation device, so that various foods and drinks can be stored by a user.

In the above description of the embodiments, the structures, connection modes, etc. of the components are not limited to the specific examples, and all equivalent changes and modifications based on the technical scheme of the present invention should not be excluded from the protection scope of the present invention.

Claims

1. A refrigerator is characterized in that a refrigerator body is provided with a refrigerator door,

comprises a humidifying unit which is arranged in an independent chamber and converts water into water mist,

the humidifying unit includes:

an ultrasonic transducer capable of vibrating at a predetermined frequency;

a metal perforated plate provided on the water supply side of the ultrasonic vibrator, and vibrating together with the ultrasonic vibrator to generate a mist; and

and a water supply tank capable of storing water for spraying and bringing the water for spraying into contact with one surface of the porous metal plate.

2. The refrigerator of claim 1,

further provided with:

a refrigerated space;

an evaporator for refrigerating the refrigerating space;

an air inlet for introducing cold air from the evaporator into the refrigerated space;

a return air inlet for returning air flowing through the refrigerated space to the evaporator; and

the independent compartments are arranged in the refrigerating space and can independently control humidity,

the independent compartment has a heat insulating layer separated from the refrigerating space around the independent compartment,

the air return opening and the independent compartment are not overlapped when viewed from the front-back direction of the refrigerator.

3. The refrigerator of claim 1,

the humidifying unit is arranged on the side surface or the top of the independent compartment,

the humidifying unit directly sprays into the independent compartment through a spray opening.

4. The refrigerator of claim 1,

the separate compartment is provided in a compartment having a refrigerating temperature zone, or the separate compartment is a separate compartment in the refrigerator.

5. The refrigerator of claim 1,

the ultrasonic vibrator is in a circular hole shape,

the metal porous plate is provided at least in a hole portion of the ultrasonic vibrator.

6. The refrigerator of claim 1,

the particle size of the water mist is 3-10 mu m.

7. The refrigerator of claim 6,

the particle size of the water mist is 4-6 mu m.

8. The refrigerator of claim 1,

the amount of mist sprayed per unit time of the humidifying unit can be changed by adjusting the voltage applied to the ultrasonic transducer.

9. The refrigerator of claim 8,

the spray amount is controlled to be 0.2-1.5 ml/min.

10. The refrigerator of claim 9,

the spray amount is controlled to be 0.4-0.8 ml/min.

11. The refrigerator of claim 1,

the water for spraying is antibacterial water containing antibacterial and antifungal agent, or,

the water for spraying is a liquid containing a deodorant or aromatic component, or,

the water for spraying is liquid containing preservative components.