Refrigerator

Abstract

The invention discloses a refrigerator, and relates to the technical field of refrigeration equipment, the refrigerator comprises a first container, a cover plate, a second container and an air duct assembly, the first container is provided with a first opening; the cover plate is arranged at the first opening and is provided with a plurality of breathable micropores; the second container is provided with a second opening and a second ventilation opening communicated with the outside; the air duct assembly is provided with an air supply door, a first air duct and a second air duct, the first air duct and the second air duct are mutually independent, a first air opening of the first air duct faces the cover plate, a third air opening of the second air duct faces the second ventilation opening, and the air supply door is used for opening the first air duct and / or the second air duct. The first container creates a relatively closed space for moisturizing through a cover plate provided with breathable micropores, and the second container is matched with the first container to form a relatively closed space for moisturizing. Cold air flowing through the upper portion of the cover plate permeates into the first container through the ventilation micropores and is blown into the second container through the second ventilation openings, and the cooling speed can be increased.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigeration equipment, and particularly to a refrigerator. Background Art

[0002] As is well known, in addition to temperature, humidity is also one of the important factors affecting the storage of fruits and vegetables. Maintaining a high-humidity environment helps to extend the freshness period of fruits and vegetables. The simplest way to maintain high humidity in a refrigerator is to make the drawer airtight so that the external cold air cannot take away the moisture released by the fruits and vegetables in the drawer. Therefore, the drawer can maintain a high-humidity state for a long time. However, after the drawer is made airtight, the external cold air cannot enter the drawer to exchange heat due to the airtightness of the drawer, resulting in a very slow cooling speed of the food materials, unable to quickly reach the set temperature, and also unable to meet the storage conditions of different types of food materials with the required humidity, affecting the freshness preservation effect. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. For this purpose, the present invention provides a refrigerator that can meet the storage conditions of different types of food materials with the required humidity.

[0004] The refrigerator according to an embodiment of the present invention includes a first container, a cover plate, a second container, and an air duct assembly. The first container has a first opening; the cover plate is disposed at the first opening so that the first container forms a relatively airtight space. The cover plate is provided with a plurality of breathable micropores configured to allow air to flow between the inside and outside of the first container; the second container has a second opening, and the first container is located at the second opening so that the second container forms a relatively airtight space. The second container is provided with a second ventilation opening communicating with the outside; the air duct assembly is provided with a supply air damper and independent first and second air ducts. The first air duct has a first air outlet facing the cover plate, and the third air outlet of the second air duct faces the second ventilation opening. The supply air damper is used to open the first air duct and / or the second air duct.

[0005] The refrigerator according to an embodiment of the present invention has at least the following beneficial effects: The first container creates a relatively airtight space through the cover plate provided with breathable micropores for moisture preservation, and the second container forms a relatively airtight space in cooperation with the first container for moisture preservation. The cold air flowing over the upper part of the cover plate seeps into the first container through the breathable micropores, and the cold air is blown into the second container through the second ventilation opening, which can improve the cooling speed. By using the independent first and second air ducts in the air duct assembly to control the air flow direction, the humidity and temperature in the first container and the second container can be adjusted to meet the storage condition requirements of different types of food materials.

[0006] According to some embodiments of the present invention, the gap between the cover plate and the first container ranges from 1 mm to 5 mm.

[0007] According to some embodiments of the present invention, the gap between the second container and the first container ranges from 1 mm to 5 mm.

[0008] According to some embodiments of the present invention, the proportion of the opening area of all the breathable micropores in the area of the cover plate ranges from 20% to 22%.

[0009] According to some embodiments of the present invention, the aperture of the breathable micropores is from 3.7 mm to 3.9 mm.

[0010] According to some embodiments of the present invention, the first container is provided with a moisture retention film, which is used to adjust the humidity of the second container and is located outside the internal space of the first container.

[0011] According to some embodiments of the present invention, the front part of the first container is provided with a front plate and a bending plate. The bending plate is bent downward from the upper end of the front plate. There is a humidity adjustment space between the front plate and the bending plate. The lower part of the humidity adjustment space is open and communicated with the second opening. The front plate is used to isolate the internal space of the first container and the humidity adjustment space, and the moisture retention film is installed on the bending plate.

[0012] According to some embodiments of the present invention, the refrigerator includes a box body, and a variable temperature chamber is arranged in the box body. The first container, the cover plate and the second container are located in the variable temperature chamber. The variable temperature chamber can operate in a first gear and a second gear, and the temperature of the variable temperature chamber in the first gear is higher than the temperature of the variable temperature chamber in the second gear.

[0013] According to some embodiments of the present invention, when ventilation is required to make the variable temperature chamber in the first gear, the air supply air door opens the first air duct and closes the second air duct.

[0014] According to some embodiments of the present invention, when ventilation is required to make the variable temperature chamber in the second gear, the air supply air door opens the second air duct.

[0015] According to some embodiments of the present invention, when ventilation is required to make the variable temperature chamber in the first gear, the air supply air door opens the first air duct and the second air duct.

[0016] According to some embodiments of the present invention, when the variable temperature chamber is in the first gear, the temperature of the variable temperature chamber is from 0°C to 5°C; when the variable temperature chamber is in the second gear, the temperature of the variable temperature chamber is below -1°C.

[0017] According to some embodiments of the present invention, the first container is located above the second container, the first air duct and the second air duct are arranged in the left-right direction, and the air inlets of the first air duct and the second air duct correspond to the bottom of the second container.

[0018] According to some embodiments of the present invention, the first air duct includes a first air outlet branch duct and a second air outlet branch duct. The first air outlet branch duct and the second air outlet branch duct are arranged in the left-right direction, and the air outlet end of the second air outlet branch duct is located above the air outlet end of the second air duct.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. Description of the Drawings

[0020] The present invention will be further described below in conjunction with the drawings and embodiments, where:

[0021] Figure 1 is a schematic diagram of a refrigerator according to an embodiment of the present invention;

[0022] Figure 2 is Figure 1 a partial cross-sectional view of the refrigerator shown in the A-A direction;

[0023] Figure 3 is Figure 2 a schematic diagram of the cover plate shown;

[0024] Figure 4 is a schematic diagram of a gas flow direction of a refrigerator according to an embodiment of the present invention;

[0025] Figure 5 is another schematic diagram of a gas flow direction of a refrigerator according to an embodiment of the present invention;

[0026] Figure 6 is Figure 1 a cross-sectional view of an embodiment in the B-B direction of the refrigerator shown;

[0027] Figure 7 is Figure 6 a schematic diagram of a gas flow direction of an air duct assembly shown;

[0028] Figure 8 is Figure 6 another schematic diagram of a gas flow direction of the air duct assembly shown;

[0029] Figure 9 is Figure 6 another schematic diagram of a gas flow direction of the air duct assembly shown;

[0030] Figure 10 is Figure 1Cross-sectional view of an embodiment of the refrigerator in the B-B direction;

[0031] Figure 11 is Figure 10 Schematic diagram of the air duct assembly shown;

[0032] Figure 12 is Figure 11 Enlarged view at C shown;

[0033] Figure 13 is Figure 11 Exploded view of the air duct assembly shown.

[0034] Reference numerals:

[0035] 101, box body; 102, variable temperature compartment; 103, first container; 104, second container; 105, first opening; 106, second opening; 107, drawer board; 108, moisture retention film;

[0036] 201, cover plate; 202, air supply damper; 203, air duct cover shell; 204, freezer compartment; 205, air duct foam; 206, first air outlet; 207, second ventilation opening; 208, third air outlet; 209, front panel; 210, bent plate; 211, humidity adjustment space; 212, first ventilation opening; 213, second air outlet; 214, refrigerator compartment;

[0037] 301, breathable micropores;

[0038] 401, return air opening;

[0039] 601, first air duct; 602, second air duct; 603, freezer air duct;

[0040] 701, first air outlet branch duct; 702, second air outlet branch duct;

[0041] 1001, air supply air duct;

[0042] 1101, wind deflector;

[0043] 1201, gear; 1202, rack portion;

[0044] 1301, driving member; 1302, sliding groove; 1303, grille hole. Detailed implementation manners

[0045] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention.

[0046] In the description of the present invention, it should be understood that with regard to the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc., it is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0047] In the description of the present invention, the meaning of "several" is one or more, the meaning of "multiple" is more than two. Understandings such as "greater than", "less than", "exceeding", etc. do not include the original number, and understandings such as "above", "below", "within", etc. include the original number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0048] In the description of the present invention, unless otherwise clearly defined, words such as "set", "installed", "connected", etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0049] In an air-cooled refrigerator, due to the direct blowing of the air supply, it is easy to cause the humidity in the freezing compartment of the refrigerator to be too low. Especially when the cold air blows directly towards the food in the freezing compartment, it is easy to cause the moisture of the food to be lost more quickly, especially the surface of the food loses a lot of water, the dry consumption is serious, and the oxidation is aggravated. To solve the problem of nutrient loss caused by too fast moisture loss, some products make the drawer airtight so that the external cold air cannot take away the moisture released by the fruits and vegetables in the drawer. Therefore, the drawer can maintain a high humidity state for a long time. However, such an airtight drawer cannot cool down quickly and has no function of adjusting humidity.

[0050] Refer to Figure 1 As shown, the refrigerator according to the embodiment of the present invention includes a box body 101, and a variable temperature compartment 102 is provided inside the box body 101. The refrigerator further includes a first container 103 and a second container 104. Both the first container 103 and the second container 104 are located in the variable temperature compartment 102, and the first container 103 is located above the second container 104.

[0051] Refer to Figure 1As shown, it can be understood that the first container 103 is configured as an upper sliding tray, that is, the top of the first container 103 has a first opening 105, and the second container 104 is configured as a lower drawer, that is, the top of the second container 104 has a second opening 106. In other words, the first container 103 and the second container 104 can be combined into a variable-temperature drawer, which includes an upper sliding tray and a lower drawer. The upper sliding tray is arranged above the lower drawer. After the lower drawer is pulled out, the user can pull out or push in the upper sliding tray to achieve forward and backward sliding, and can choose to take out the food in the upper sliding tray or the lower drawer. When the upper sliding tray completely overlaps the upper part of the lower drawer, a relatively airtight space is formed in the lower drawer. The gap range between the second container 104 and the first container 103 is 1 mm to 5 mm, which has a good moisture preservation effect on the naked food ingredients (such as food ingredients without a fresh-keeping bag wrapped), and can keep the internal humidity of the second container 104 at the level of 90%-95%. The existence of the gap can facilitate the sliding of the second container 104 to smoothly perform the pulling-out or pushing-in action of the second container 104. And when cold air is introduced into the second container 104, it can allow the air flow entering the second container 104 to flow out and maintain a certain pressure.

[0052] It should be noted that the first container 103 and the second container 104 can also be arranged side by side in the left-right direction. Correspondingly, the first opening 105 and the second opening 106 are arranged facing the left-right direction.

[0053] Refer to Figure 1 and Figure 2 As shown, it can be understood that the second container 104 is provided with a drawer board 107. The drawer board 107 is located at the front end of the second container 104 and extends upward to the front side of the first container 103, so that when the first container 103 and the second container 104 are in the closed position, the drawer board 107 can close the entrance of the variable-temperature chamber 102. Compared with the scheme of using the front end of the first container 103 to close the upper half of the entrance of the variable-temperature chamber 102, and using the front end of the second container 104 to close the lower half of the entrance of the variable-temperature chamber 102, the drawer board 107 of the second container 104 closes the entire entrance of the variable-temperature chamber 102, which can reduce the gap between the first container 103 and the second container 104, improve the sealing performance, and reduce cold air leakage.

[0054] Refer to Figure 2 As shown, it can be understood that the refrigerator further includes a cover plate 201. The cover plate 201 is arranged at the first opening 105 so that the first container 103 forms a relatively airtight space. For example, the gap range between the cover plate 201 and the first container 103 is 1 mm to 5 mm. The existence of the gap can facilitate the sliding of the first container 103 to smoothly perform the pulling-out or pushing-in action of the first container 103. Refer to Figure 3As shown, the cover plate 201 is provided with a plurality of breathable micropores 301, and the breathable micropores 301 are configured to allow air circulation inside and outside the first container 103.

[0055] It can be understood that in some embodiments, the proportion of the opening area of all the breathable micropores 301 in the area of the cover plate 201 ranges from 20% to 22%, which can maintain the humidity inside the first container 103 at the level of 80% - 90%. When the proportion of the opening area is less than 20%, it is not conducive to the cold air entering the inside of the first container 103 for heat exchange, resulting in a slow cooling rate and not meeting the cooling requirements. When the proportion of the opening area is greater than 22%, it is not conducive to moisture retention inside the first container 103, and the humidity is less than 80%.

[0056] Referring to Figure 3 As shown, it can be understood that in some embodiments, the aperture of the breathable micropore 301 is D, and the size range of D is from 3.7 mm to 3.9 mm. When D is less than 3.7 mm, it is difficult to achieve air circulation inside and outside the first container 103. When D is greater than 3.9 mm, it is difficult to maintain a high-humidity state inside the first container 103.

[0057] Referring to Figure 3 As shown, it can be understood that in some embodiments, the plurality of breathable micropores 301 are divided into multiple rows, and the distance between two adjacent breathable micropores 301 in each row is L1. The value of L1 can be selected as 8 mm, 10 mm, 12 mm, etc. Hereinafter, the value of L1 is taken as 10 mm for illustration.

[0058] Referring to Figure 3 As shown, it can be understood that in some embodiments, the row spacing between two adjacent rows is L2. The value of L2 can be selected as 3 mm, 4 mm, 5 mm, 6 mm, 8 mm, etc. Hereinafter, the value of L2 is taken as 5 mm for illustration.

[0059] Referring to Figure 3 As shown, it can be understood that in some embodiments, the breathable micropores 301 in two adjacent rows are arranged in a staggered manner. That is to say, there is a group of breathable micropores 301, and this group of breathable micropores 301 has 4 breathable micropores 301 forming a square, the size of the square is 10 mm * 10 mm, and there is also a breathable micropore 301 opened in the middle of these 4 breathable micropores 301, and this breathable micropore 301 is located at the intersection of the diagonals of the above square. This can effectively utilize the space and make the air flow distribution more uniform.

[0060] Referring to Figure 2As shown, it can be understood that the second container 104 is provided with a second ventilation opening 207. The second ventilation opening 207 communicates the interior and exterior of the second container 104, enabling the cold air generated by the refrigeration system in the refrigerator to enter the interior of the second container 104, achieving rapid cooling and also allowing for the storage of some items with lower humidity requirements.

[0061] It should be noted that in some other embodiments, a refrigerating chamber 214 is provided inside the cabinet 101, and the first container 103 and the second container 104 can also be both arranged inside the refrigerating chamber 214. According to different temperature and humidity requirements, the airflows of the first container 103 and the second container 104 are adjusted correspondingly.

[0062] Referring to Figure 2 As shown, it can be understood that the refrigerator further includes an air duct assembly for delivering cold air to the first container 103 and the second container 104. For example, the air duct assembly includes an air duct cover 203. A supply air damper 202 is provided at the bottom of the air duct cover 203. The supply air damper 202 connects the freezer compartment 204 and the variable temperature compartment 102, and its function is to allow the freezer compartment 204 to deliver cold air to the variable temperature compartment 102 for temperature control. A duct foam 205 is provided inside the variable temperature air duct cover 203, and a channel for guiding the airflow direction is formed inside the duct foam 205. By controlling the airflow direction, the air duct assembly has different working states, and thus the refrigerator enters different working modes.

[0063] Referring to Figure 2 and Figure 4As shown, it can be understood that the air duct assembly has a first state. The air duct assembly has a first air outlet 206, and the first air outlet 206 is located at the rear side of the first container 103. Airflow blows out from the first air outlet 206 and flows above the cover plate 201, then flows downward along the front side of the first container 103, and finally flows back to the air return port 401 from the bottom of the second container 104. During the whole process, no airflow directly blows into the interior of the second container 104. That is, when the air duct assembly is in the first state, the airflow blows towards the cover plate 201 and bypasses the second ventilation opening 207. The cold air flowing through the upper part of the cover plate 201 seeps into the interior of the first container 103 through the breathable micropores 301, which can improve the cooling speed. However, only part of the water vapor can escape to the outside of the cover plate 201 through the breathable micropores 301, which helps to maintain the humidity inside the first container 103. At the same time, part of the water vapor escapes to the outside of the cover plate 201 through the breathable micropores 301, which can prevent the berry fruits in the first container 103 from mildewing due to excessive humidity and meet the humidity requirements of 85%-95% for fruit ingredients. Since the cold air does not directly enter the first container 103 and the second container 104, the cold air cannot easily carry away the moisture inside the first container 103 and the second container 104. The first container 103 and the cover plate 201 cooperate to form a relatively airtight space, and the first container 103 and the second container 104 cooperate to form a relatively airtight space, ensuring that the interiors of the first container 103 and the second container 104 maintain a relatively high humidity, that is, high humidity preservation is achieved.

[0064] Referring to Figure 2 and Figure 5 As shown, it can be understood that the air duct assembly has a second state. The air duct assembly has a third air outlet 208, and the third air outlet 208 is located at the rear side of the second container 104 and corresponds to the position of the second opening 106. A part of the airflow blows out from the third air outlet 208 and blows into the interior of the second container 104 from the second opening 106, then flows downward along the front side of the second container 104, and finally flows back to the air return port 401 from the bottom of the second container 104. In addition, a part of the airflow blows out from the first air outlet 206 and flows above the cover plate 201, then flows downward along the front side of the first container 103, and finally flows back to the air return port 401 from the bottom of the second container 104. That is, when the air duct assembly is in the second state, the airflow blows towards the second ventilation opening 207 and the cover plate 201. Since the cold air slowly enters the first container 103 and directly blows into the second container 104, the first container 103 and the second container 104 can be quickly cooled and stored, and simultaneous air supply for the upper and lower layers is achieved. In addition, less moisture is lost inside the first container 103, and more moisture is lost inside the second container 104, presenting a distribution pattern of high humidity in the upper layer and low humidity in the lower layer, realizing dry and wet separate storage.

[0065] Therefore, by using the air duct assembly to control the air flow direction, opening or closing the third air outlet 208, the humidity and temperature in the second container 104 can be adjusted, and the temperature in the first container 103 can also be adjusted to meet the storage condition requirements of different types of food materials.

[0066] Referring to Figure 1 and Figure 2 As shown, it can be understood that a moisture-proof film 108 is provided at the front of the first container 103. The moisture-proof film 108 is communicated with the second container 104. The moisture-proof film 108 has the functions of moisture retention and moisture permeability. When the humidity in the second container 104 is too high, for example, the humidity is greater than 95%, the moisture-proof film 108 transmits moisture to the outside of the first container 103 to reduce the humidity inside the second container 104. When the humidity in the second container 104 is low, for example, the humidity is less than 90%, the moisture-proof film 108 plays a moisture retention role to meet the humidity requirements of 90%-95% for vegetable food materials.

[0067] Referring to Figure 2 As shown, it can be understood that a front plate 209 and a bending plate 210 are provided at the front of the first container 103. The bending plate 210 is bent downward from the upper end of the front plate 209. There is a humidity adjustment space 211 between the front plate 209 and the bending plate 210. The lower part of the humidity adjustment space 211 is open, so as to communicate with the second opening 106. The front plate 209 is used to isolate the internal space of the first container 103 and the humidity adjustment space 211. The moisture-proof film 108 is installed on the bending plate 210, which is convenient for users to install and replace.

[0068] Referring to Figure 6 As shown, it can be understood that in some embodiments, a channel for guiding the air flow direction is formed in the air duct foam 205. The channel has a first air duct 601 and a second air duct 602. The first air duct 601 and the second air duct 602 are independent of each other. The air supply air damper 202 is a double air damper. The air supply air damper 202 is used to open at least one of the first air duct 601 and the second air duct 602 to enable the above-mentioned air duct assembly to be in the first state or the second state. The air supply air damper 202 is located between the freezer 204 and the variable temperature chamber 102, and its function is to allow the freezer 204 to deliver cold air to the variable temperature chamber 102 through the freezing air duct 603 for temperature control.

[0069] Among them, referring to Figure 2 and Figure 6As shown, the first container 103 is provided with a first ventilation opening 212. The first ventilation opening 212 communicates the interior and exterior of the first container 103, enabling the cold air generated by the refrigeration system in the refrigerator to enter the interior of the first container 103 to achieve rapid cooling. The air outlet end of the first air duct 601 is provided with a first air outlet 206, and the first air outlet 206 faces the upper part of the cover plate 201. The air outlet end of the second air duct 602 is provided with a second air outlet 213 and a third air outlet 208. The second air outlet 213 faces the first ventilation opening 212, and the third air outlet 208 faces the second ventilation opening 207.

[0070] When the air duct assembly is in the first state, the air supply air damper 202 opens the first air duct 601, and the cold air conveyed by the freezing air duct 603 is conveyed to the upper part of the cover plate 201 via the first air outlet 206. The cold air surrounds the first container 103 and the second container 104 and returns to the freezing chamber 204 via the air return opening 401. Since the cold air does not directly enter the first container 103 and the second container 104, it is not easy for the cold air to carry away the moisture inside the first container 103 and the second container 104, ensuring high humidity for the upper sliding tray and the lower drawer.

[0071] When the air duct assembly is in the second state, the air supply air damper 202 opens the second air duct 602, and the cold air conveyed by the freezing air duct 603 is conveyed into the interior of the first container 103 via the second air outlet 213 and conveyed into the interior of the second container 104 via the third air outlet 208. Since the cold air directly blows into the interiors of the first container 103 and the second container 104, it can enable the first container 103 and the second container 104 to cool down rapidly, meeting performance requirements such as temperature storage and freezing capacity.

[0072] With the rise of fresh food e-commerce in recent years, people's demand for meat and fresh food ingredients has gradually shifted from long-term storage to short-term storage. In recent years, the wide-range variable temperature function has been well-liked by users because of its large storage space and flexible switching between refrigeration and freezing. Users can flexibly adjust the appropriate storage function according to actual storage needs. For example, when storing fruits and vegetables, the variable temperature drawer can be adjusted to the refrigeration gear (0°C to 5°C), and when storing meat, it can be adjusted to the soft freezing / freezing gear (below -1°C, such as -18°C, -24°C, -30°C, -40°C, -60°C).

[0073] Refer to Figure 7 As shown, it can be understood that by adopting the solution of the embodiment of the present invention, when the user sets the variable temperature chamber 102 to the refrigeration gear, that is, when the temperature of the variable temperature chamber 102 is between 0°C and 5°C, the air supply air damper 202 opens the first air duct 601 and closes the second air duct 602. The first air outlet 206 can supply air, while the second air outlet 213 and the third air outlet 208 cannot supply air. The cold air does not directly enter the first container 103 and the second container 104, avoiding taking away the moisture of the ingredients and realizing the high humidity function of the entire space.

[0074] Refer toFigure 4 and Figure 7 As shown, it can be understood that the cold air flows upward from the bottom of the second container 104, circulates around the first container 103 and the second container 104, and then returns to the freezer compartment 204 through the air return port 401. Thus, the temperature of the internal food materials can be reduced through the heat exchange of the outer wall, improving the low-temperature preservation environment.

[0075] Referring to Figure 8 As shown, it can be understood that when the user sets the variable temperature compartment 102 to the freezing mode, that is, when the temperature of the variable temperature compartment 102 is below -1°C, the air supply damper 202 opens the first air duct 601 and the second air duct 602, and the first air outlet 206, the second air outlet 213, and the third air outlet 208 can all supply air. The cold air directly enters the first container 103 and the second container 104, and is also conveyed to the upper part of the cover plate 201. Therefore, it can ensure that the first container 103 and the second container 104 are quickly cooled, accelerating the cooling speed of the food materials, helping the temperature of the food materials to drop to the set temperature, and improving the preservation effect. It can be understood that because the set temperature of the freezing mode is relatively low, if the cooling speed of the food materials is very slow, it is possible that the temperature of the food materials cannot drop to the set temperature within a short time, ultimately resulting in a poor preservation effect.

[0076] It should be noted that in some other embodiments, when the user sets the variable temperature compartment 102 to the refrigerating mode, the air supply damper 202 opens the first air duct 601 and the second air duct 602, and the first air outlet 206, the second air outlet 213, and the third air outlet 208 can all supply air.

[0077] It can be understood that according to the above embodiments, other embodiments can be extended, that is, the variable temperature compartment 102 can operate in the first gear and the second gear, and the temperature of the variable temperature compartment 102 in the first gear is higher than the temperature of the variable temperature compartment 102 in the second gear. When the variable temperature compartment 102 is in the first gear, the air duct assembly is in the first state, realizing high humidity in the whole space. When the variable temperature compartment 102 is in the first gear, the air duct assembly is in the second state, and the first container 103 realizes constant temperature and high humidity.

[0078] It can be understood that according to the above embodiments, other embodiments can be extended, that is, the variable temperature compartment 102 can operate in the first gear and the second gear, and the temperature of the variable temperature compartment 102 in the first gear is higher than the temperature of the variable temperature compartment 102 in the second gear. When the variable temperature compartment 102 is set to the first gear, and the current temperature of the variable temperature compartment 102 is greater than the set temperature of the first gear, at this time the air duct assembly is turned on to realize ventilation, and the air duct assembly is in the first state, realizing high humidity in the whole space. When the variable temperature compartment 102 is set to the second gear, and the current temperature of the variable temperature compartment 102 is greater than the set temperature of the second gear, at this time the air duct assembly is turned on to realize ventilation, and the air duct assembly is in the second state, and the first container 103 realizes constant temperature and high humidity.

[0079] It should be noted that when the variable temperature chamber 102 is in the first gear or the second gear, that is, when the temperature of the current variable temperature chamber 102 reaches the set temperature, the air duct assembly is not ventilated at this time, and it can be in the first state or the second state.

[0080] In summary, the functions of the breathable micropores 301 are as follows: ① When switched to the refrigeration gear, part of the water vapor can escape to the outside of the cover plate 201 through the breathable micropores 301, preventing the berry fruits from mildewing due to the excessive humidity in the first container 103 and meeting the humidity requirements of 85%-95% for fruit ingredients; ② When switched to freezing, the cold air flowing through the upper part of the cover plate 201 penetrates into the first container 103 through the breathable micropores 301, which can improve the freezing and cooling speed; ③ When defrosting the freezer, it can prevent the hot air generated by the heating wire from directly entering the first container 103 and impacting the temperature of the ingredients, causing a large fluctuation in the temperature of the ingredients.

[0081] Refer to Figure 7 As shown, it can be understood that the first air duct 601 and the second air duct 602 are arranged in the left-right direction, and the air inlets of the first air duct 601 and the second air duct 602 correspond to the bottom of the second container 104, so that the cold air flows upward from the bottom of the second container 104 to the upper part of the first container 103 and the upper part of the second container 104, increasing the heat exchange area between the first air duct 601 and the second air duct 602 and the first container 103 and the second container 104, which is beneficial to improving the heat exchange efficiency.

[0082] It can be understood that in some other embodiments, the first air duct 601 and the second air duct 602 can also be arranged in the up-down direction.

[0083] Refer to Figure 7 As shown, it can be understood that the first air duct 601 includes a first air outlet branch duct 701 and a second air outlet branch duct 702, and the first air outlet branch duct 701 and the second air outlet branch duct 702 are arranged in the left-right direction. Such an arrangement mainly has a guiding effect. Generally, the air return port 401 is on the left side in the figure. Since the first air duct 601 is on the right side in the figure, part of the air is guided to the right side to ensure that the temperature on the right side can be pulled down better. If the first air outlet branch duct 701 and the second air outlet branch duct 702 are combined together, the temperature on the right side may be too high because most of the air directly flows back to the air return port 401 on the left side. That is to say, by dividing the first air duct 601 into the first air outlet branch duct 701 and the second air outlet branch duct 702, and arranging the first air outlet branch duct 701 and the second air outlet branch duct 702 in the left-right direction, the uniformity of the temperature distribution can be improved.

[0084] Refer to Figure 9 As shown, it can be understood that in some embodiments, Figures 6 to 8The main difference of the illustrated embodiment is that the second air duct 602 only has the third air outlet 208 facing the second air vent 207, and does not have the second air outlet 213 facing the first air vent 212.

[0085] When the air duct assembly is in the first state, the air supply damper 202 opens the first air duct 601, and the cold air conveyed by the freezing air duct 603 is conveyed to the upper part of the cover plate 201 through the first air outlet 206. The cold air surrounds the first container 103 and the second container 104 and returns to the freezing chamber 204 through the air return port 401. Since the cold air does not directly enter the first container 103 and the second container 104, it is not easy for the cold air to take away the moisture inside the first container 103 and the second container 104, ensuring high humidity retention of the upper sliding tray and the lower drawer.

[0086] When the air duct assembly is in the second state, the air supply damper 202 opens the second air duct 602, and the cold air conveyed by the freezing air duct 603 is conveyed to the inside of the second container 104 through the third air outlet 208. Since the cold air directly blows into the inside of the second container 104, the second container 104 can be quickly cooled down. At the same time, the cold air entering the inside of the second container 104 will also exchange heat with the bottom of the first container 103, accelerating the cooling rate of the first container 103, meeting performance requirements such as temperature storage and freezing capacity. And there is no cold air directly entering the inside of the first container 103, which is beneficial to maintaining the high humidity state of the first container 103, realizing dry-wet separate storage of the first container 103 and the second container 104.

[0087] In addition, referring to Figure 9 as shown, it can be understood that the first air duct 601 includes a first air outlet branch duct 701 and a second air outlet branch duct 702. The first air outlet branch duct 701 and the second air outlet branch duct 702 are arranged in the left-right direction, and the air outlet end of the second air outlet branch duct 702 is located above the air outlet end of the second air duct 602. Since the first air duct 601 and the second air duct 602 are arranged in the left-right direction, the second air duct 602 occupies a part of the space, affecting the cold air covering a larger range of the cover plate 201, which is not conducive to the temperature uniformity. And Figure 9 in the illustrated embodiment, by setting the air outlet end of the second air outlet branch duct 702 above the air outlet end of the second air duct 602, the air outlet range is expanded, covering a larger area of the cover plate 201, thereby improving the temperature uniformity.

[0088] It should be noted that Figure 9 in the illustrated embodiment, the air outlet of the second air duct 602 does not blow towards the cover plate 201. In some other embodiments, the air outlet of the second air duct 602 can also blow towards the cover plate 201, that is, after the cold air enters the second air duct 602, a part of the air flow will blow towards the cover plate 201.

[0089] Referring to Figures 10 to 13As shown, it can be understood that in some embodiments, the air duct assembly includes an air duct cover 203. A single air supply damper 202 is provided at the bottom of the air duct cover 203. The air supply damper 202 connects the freezer compartment 204 and the variable temperature compartment 102, and its function is to allow the freezer compartment 204 to supply cold air to the variable temperature compartment 102 for temperature control. Inside the variable temperature air duct cover 203, there is an air duct foam 205. A channel for guiding the air flow direction is formed inside the air duct foam 205. The channel includes a single air supply duct 1001. The air supply duct 1001 has a first air outlet 206 and a third air outlet 208. The first air outlet 206 faces the cover plate 201, and the third air outlet 208 faces the second ventilation opening 207. The air duct assembly is provided with an air control device for opening or closing the third air outlet 208, which can adjust the humidity and temperature inside the second container 104 to meet the storage condition requirements of different types of food ingredients.

[0090] When the air duct assembly is in the first state, the air supply damper 202 opens the air supply duct 1001, and the air control device shields the third air outlet 208. The cold air conveyed by the freezer air duct 603 is conveyed to the upper part of the cover plate 201 through the first air outlet 206. The cold air surrounds the first container 103 and the second container 104 and returns to the freezer compartment 204 through the air return opening 401. Since the cold air does not directly enter the first container 103 and the second container 104, it is not easy for the cold air to carry away the internal moisture of the first container 103 and the second container 104, ensuring high humidity for the upper sliding tray and the lower drawer.

[0091] When the air duct assembly is in the second state, the air supply damper 202 opens the air supply duct 1001, and the air control device opens the third air outlet 208. The cold air conveyed by the freezer air duct 603 is conveyed to the upper part of the cover plate 201 through the first air outlet 206 and then conveyed to the inside of the second container 104 through the third air outlet 208. Since the cold air directly blows into the inside of the second container 104, it can quickly cool down the first container 103 and the second container 104, realizing dry-wet separation storage and meeting the performance requirements such as storage temperature and freezing capacity.

[0092] When the user sets the variable temperature compartment 102 to the refrigeration mode, if the air duct assembly is in the first state, the full-space high-humidity function can be realized. If the air duct assembly is in the second state, dry-wet separation storage can be realized and the cooling rate can be accelerated.

[0093] When the user sets the variable temperature compartment 102 to the freezing mode, the air duct assembly is in the second state, and it can quickly cool down to the set temperature to meet the performance requirements such as storage temperature and freezing capacity.

[0094] Refer to Figures 11 to 13As shown, it can be understood that the air control device includes a wind deflector 1101 and a driving member 1301. The driving member 1301 drives the wind deflector 1101 to move to open or close the third air outlet 208. The driving member 1301 can be a motor. A gear 1201 is provided at the output end of the motor, and a rack portion 1202 meshing with the gear 1201 is provided on the wind deflector 1101. The motor drives the gear 1201 to rotate, thereby driving the rack portion 1202 to move, and further driving the wind deflector 1101 to move.

[0095] Referring to Figure 13 As shown, it can be understood that the air duct cover 203 is provided with a chute 1302, and the wind deflector 1101 is installed in the chute 1302 to slide in the up and down direction along the chute 1302, so that the movement direction of the wind deflector 1101 is more accurate and the movement process is smoother.

[0096] Referring to Figure 13 As shown, it can be understood that the wind deflector 1101 is provided with grille holes 1303. When the grille holes 1303 correspond to the position of the third air outlet 208, the third air outlet 208 is opened, so that cold air can enter the interior of the second container 104 through the second ventilation opening 207. When the grille holes 1303 are completely misaligned with the position of the third air outlet 208, the third air outlet 208 is blocked by the wind deflector 1101, and the cold air does not directly enter the second container 104.

[0097] It should be noted that in some other embodiments, the third air outlet 208 can also be closed by blocking the third air outlet 208 with the wind deflector 1101, and the third air outlet 208 can be opened by moving the wind deflector 1101 away from the third air outlet 208.

[0098] It can be understood that in some other embodiments, the driving member 1301 can also drive the wind deflector 1101 to move through a transmission mechanism such as a pulley mechanism or a belt drive mechanism. In addition, in some other embodiments, the driving member 1301 can also be to drive the wind deflector 1101 to rotate to open or close the third air outlet 208.

[0099] The embodiments of the present invention have been described in detail above with reference to the drawings. However, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the scope of knowledge possessed by those of ordinary skill in the art.

Claims

1. A refrigerator, characterized in that, it comprises: a first container having a first opening; a cover plate disposed at the first opening to form a relatively airtight space in the first container, the cover plate being provided with a plurality of breathable micropores configured to allow air circulation inside and outside the first container; a second container having a second opening, the first container being located at the second opening to form a relatively airtight space in the second container, the second container being provided with a second ventilation opening communicating with the outside; an air duct assembly provided with a supply air damper and independent first and second air ducts, a first air outlet of the first air duct facing the cover plate, a third air outlet of the second air duct facing the second ventilation opening, the supply air damper being used to open the first air duct and / or the second air duct.

2. The refrigerator according to claim 1, characterized in that, the gap between the cover plate and the first container ranges from 1 mm to 5 mm.

3. The refrigerator according to claim 1, characterized in that, the gap between the second container and the first container ranges from 1 mm to 5 mm.

4. The refrigerator according to claim 1, characterized in that, the proportion of the opening area of all the breathable micropores in the area of the cover plate ranges from 20% to 22%.

5. The refrigerator according to claim 1, characterized in that, the aperture of the breathable micropores ranges from 3.7 mm to 3.9 mm.

6. The refrigerator according to claim 1, characterized in that, the first container is provided with a moisture retention film for adjusting the humidity of the second container and located outside the internal space of the first container.

7. The refrigerator according to claim 6, characterized in that, a front plate and a bent plate are provided at the front of the first container, the bent plate being bent downward from the upper end of the front plate, there being a humidity adjustment space between the front plate and the bent plate, the lower part of the humidity adjustment space being open and communicating with the second opening, the front plate being used to isolate the internal space of the first container and the humidity adjustment space, and the moisture retention film being installed on the bent plate.

8. The refrigerator according to claim 1, characterized in that, the refrigerator comprises a box body, a variable temperature chamber is provided in the box body, the first container, the cover plate and the second container are located in the variable temperature chamber, the variable temperature chamber can operate in a first gear and a second gear, and the temperature of the variable temperature chamber in the first gear is higher than the temperature of the variable temperature chamber in the second gear.

9. The refrigerator according to claim 8, characterized in that, when ventilation is required to make the variable temperature chamber in the first gear, the supply air damper opens the first air duct and closes the second air duct.

10. The refrigerator according to claim 8, characterized in that, when ventilation is required to make the variable temperature chamber in the second gear, the supply air damper opens the second air duct.

11. The refrigerator according to claim 8, characterized in that, when ventilation is required to make the variable temperature chamber in the first gear, the supply air damper opens the first air duct and the second air duct.

12. The refrigerator according to any one of claims 8 to 11, characterized in that, When the variable temperature chamber is at the first gear, the temperature of the variable temperature chamber is 0°C to 5°C; when the variable temperature chamber is at the second gear, the temperature of the variable temperature chamber is below -1°C.

13. The refrigerator according to claim 1, characterized in that the first container is located above the second container, the first air duct and the second air duct are arranged in the left-right direction, and the air inlets of the first air duct and the second air duct correspond to the bottom of the second container.

14. The refrigerator according to claim 13, characterized in that the first air duct includes a first air outlet branch duct and a second air outlet branch duct, the first air outlet branch duct and the second air outlet branch duct are arranged in the left-right direction, and the air outlet end of the second air outlet branch duct is located above the air outlet end of the second air duct.

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