Refrigerator

Abstract

The embodiment of the invention belongs to the technical field of refrigeration equipment, and provides a refrigerator which comprises an ultrasonic atomizer, the ultrasonic atomizer comprises a piezoelectric vibration element, the piezoelectric vibration element comprises two first edges and two second edges, the two first edges are arranged at intervals in the first direction and extend in the second direction, and the two second edges are arranged at intervals in the second direction and extend in the first direction; the two first edges and the two second edges are connected to define a fog passing channel; the distance between the two second edges is larger than the distance between the two first edges. The atomizing plate is connected with the piezoelectric vibration element, an atomizing area opposite to the mist passing channel is arranged on the atomizing plate, and a plurality of atomizing holes penetrating through the atomizing plate are formed in the atomizing area. By means of the technical scheme, mist is evenly discharged in the first direction, diffusion of water mist in the first direction is small, the water mist keeps linear, the water mist is continuous in the second direction, continuous linear uniform water mist can be formed, the size of the humidifying module in the first direction can be small, and occupied space of the refrigerator can be reduced.

Description

Technical Field

[0001] This application relates to the field of refrigeration equipment technology, and more particularly to a refrigerator. Background Technology

[0002] A refrigerator typically consists of a cabinet, a door, and a refrigeration system. The cabinet contains a cooling compartment. The door allows the cooling compartment to be opened and closed. The refrigeration system includes a compressor, a condenser, a throttling device, and an evaporator. When the evaporator operates, it transfers cold air to lower the temperature inside the cooling compartment, allowing the compartment to refrigerate or freeze items.

[0003] Traditional refrigerators, which rely on low temperatures to delay spoilage, can no longer meet users' demands for precise preservation indicators such as the moisture content of fruits and vegetables and the crispness of leafy greens. Related technologies address this by creating a humid environment through humidification. Ultrasonic atomization humidification technology, with its unique advantages, is being applied to refrigerators.

[0004] Currently, in the humidification industry, the atomizing plates of ultrasonic atomizers within humidification modules are all circular. However, the water mist formed by the circular atomizing plates diffuses in a cone shape, resulting in uneven mist output. Furthermore, this leads to a relatively large overall height of the humidification module, occupying significant space within the refrigerator and affecting the arrangement of other structures and the storage of items. Therefore, this application proposes a refrigerator design. Summary of the Invention

[0005] This application provides a refrigerator that can solve the technical problems of uneven mist output from the humidification module and the large overall height of the humidification module.

[0006] In a first aspect, embodiments of this application provide a refrigerator, comprising:

[0007] The enclosure contains a refrigeration compartment;

[0008] The cabinet door is used to open or close the refrigeration compartment;

[0009] A humidification module, installed on the cabinet or the cabinet door, is used to humidify the refrigeration chamber; the humidification module includes an ultrasonic atomizer, the ultrasonic atomizer comprising:

[0010] A piezoelectric vibrating element is ring-shaped and includes two first sides and two second sides. The two first sides are spaced apart along a first direction and both extend along a second direction. The two second sides are spaced apart along the second direction and both extend along the first direction. The two first sides and the two second sides are connected to form a fog-passing channel. The fog-passing channel penetrates the piezoelectric vibrating element in a third direction. The first direction, the second direction, and the third direction are perpendicular to each other. The distance between the two second sides is greater than the distance between the two first sides.

[0011] An atomizing plate is connected to the piezoelectric vibration element to form an annular connection area. The atomizing plate covers the fogging channel and is located at the end of the fogging channel along the third direction. The atomizing plate is provided with an atomizing area opposite to the fogging channel. The atomizing area is located inside the connection area. The atomizing area is provided with a plurality of atomizing holes penetrating the atomizing plate.

[0012] The vibration generated by the piezoelectric vibrating element is transmitted to the atomizing zone, causing the liquid on the surface of the atomizing zone to atomize into mist. The mist is ejected through the atomizing hole and discharged along the mist passage.

[0013] The piezoelectric vibrating element comprises two first sides and two second sides, with the distance between the two second sides being greater than the distance between the two first sides, allowing the piezoelectric vibrating element to roughly form a rectangular ring. The stress generated by the piezoelectric vibrating element is transmitted into the atomization zone along the first and second directions, with the center of the atomization zone experiencing the greatest force and amplitude. Because the distance between the two second sides is greater than the distance between the two first sides, the distance transmitted along the first direction to the center of the atomization zone is less than the distance transmitted along the second direction, resulting in smaller amplitude differences at different locations in the atomization zone along the first direction. This ensures that the initial velocity of the mist is essentially uniform, leading to uniform mist output along the first direction. The water mist diffuses less and remains linear in the first direction, while the water mist is continuous in the second direction, forming a continuous, linear, and uniform water mist. This improves the visual effect of the mist output and allows the humidification module to be smaller in the first direction, reducing its footprint in the refrigerator.

[0014] According to one embodiment of this application, the distance between the two first sides is G1, where G1 ≥ 4 mm and G1 ≤ 10 mm, and the distance between the two second sides is G2, where G2 ≥ 40 mm and G2 ≤ ​​70 mm.

[0015] Setting G1≥4mm ensures the atomization zone's size along the first direction is not too small, providing sufficient area for atomization holes and preventing the generated linear water mist from being too thin. Setting G1≤10mm prevents the atomization zone's size along the first direction from being too large, avoids excessive amplitude differences at different positions along the first direction, prevents severe diffusion of the formed water mist in the first direction, and enables the formation of linear water mist. This also reduces the size of the humidification module in the first direction and minimizes its space occupation in the refrigerator.

[0016] According to one embodiment of this application, the distance between the two first sides is G1, the distance between the two second sides is G2, and G2 / G1≥2 and G2 / G1≤20.

[0017] Setting G2 / G1≥2 and G2 / G1≤20 avoids making the first side too long relative to the second side, preventing the piezoelectric vibration element from breaking and extending its service life. Compared with the amplitude difference of the atomization zone in the second direction, the amplitude difference of the atomization zone at different positions along the first direction is small, and the initial velocity of the mist is basically the same, making the mist output uniform along the first direction. The diffusion of water mist in the first direction is small and remains linear, and the water mist is continuous in the second direction, which can form a continuous linear uniform water mist and avoid the continuous linear water mist being too thin, thus improving the visual effect of the mist output.

[0018] According to one embodiment of this application, the atomizing zone includes a plurality of sub-atomizing zones, the plurality of sub-atomizing zones are arranged along the second direction, and adjacent two sub-atomizing zones are connected or spaced apart;

[0019] The ratio of the sum of the areas of all the atomizing holes on the surface of the sub-atomizing region to the surface area of ​​the sub-atomizing region is the atomizing hole coverage rate; along the second direction, from the center of the atomizing region to the edge of the atomizing region, two adjacent sub-atomizing regions are respectively the first sub-atomizing region and the second sub-atomizing region;

[0020] The coverage rates of the atomizing holes in the first sub-atomizing zone and the second sub-atomizing zone are respectively a first coverage rate P1 and a second coverage rate P2, where P2>P1 and P1>0.

[0021] Setting P2>P1 ensures that along the second direction, the closer to the center of the atomization zone, the less coverage of the atomization holes. This results in a lower fog density in the center of the atomization zone and a higher fog density on both sides. This allows the water mist on both sides to diffuse towards the center, and the water mist with a higher velocity in the center to drive the water mist with a lower velocity on both sides. This reduces the velocity difference between the water mist in the center and the water mist on both sides, and improves the uniformity of fog output in the second direction.

[0022] According to one embodiment of this application, the atomizing zone includes a plurality of sub-atomizing zones, the plurality of sub-atomizing zones are arranged along the second direction, and adjacent two sub-atomizing zones are connected or spaced apart;

[0023] The ratio of the sum of the areas of all the atomizing holes on the surface of the sub-atomizing region to the surface area of ​​the sub-atomizing region is the atomizing hole coverage rate; along the second direction, from the center of the atomizing region to the edge of the atomizing region, three adjacent sub-atomizing regions are respectively the first sub-atomizing region, the second sub-atomizing region, and the third sub-atomizing region;

[0024] The atomization hole coverage rates of the first sub-atomization zone, the second sub-atomization zone, and the third sub-atomization zone are respectively the first coverage rate P1, the second coverage rate P2, and the third coverage rate P3, where P3>P2, P2>P1, P1>0, and P3-P2>P2-P1.

[0025] Setting P3>P2, P2>P1, P1>0, and P3-P2>P2-P1 ensures that along the second direction, the closer to the center of the atomization zone, the less coverage of the atomization holes. This results in a lower fog density in the center of the atomization zone and a higher fog density on both sides, allowing the water mist on both sides to diffuse towards the center. The water mist with higher velocity in the center carries the water mist with lower velocity on both sides, reducing the velocity difference between the water mist in the center and on both sides, and improving the uniformity of fog output in the second direction. Furthermore, the farther away from the center of the atomization zone, the greater the increase in atomization hole coverage, causing more water mist on both sides to diffuse towards the center, further improving the uniformity of fog output in the second direction.

[0026] According to one embodiment of this application, the atomizing region includes a plurality of sub-atomizing regions, the plurality of sub-atomizing regions are arranged along the second direction, and adjacent two sub-atomizing regions are connected;

[0027] The sub-atomizing zones within the atomizing zone are all equal in size in the second direction, and the diameters of the atomizing holes within the atomizing zone are all equal.

[0028] Along the second direction, N sub-atomization zones are distributed from the center of the atomization zone to the edge of the atomization zone, in order from the first sub-atomization zone to the Nth sub-atomization zone, where N≥1. The number of atomization holes in the Nth atomization zone is Q=(0.125N(N-1)+1)W, where W is an integer greater than 0 and W is a multiple of 4.

[0029] The number of atomizing holes 31211 in the Nth atomization zone is set to Q = (0.125N(N-1)+1)W, so that the closer to the center of the atomization zone along the second direction, the fewer the number of atomizing holes in the sub-atomization zone. This results in a lower mist density in the center of the atomization zone and a higher mist density on both sides along the second direction. This allows the water mist on both sides to diffuse towards the center, and the water mist with a higher velocity in the center to drive the water mist with a lower velocity on both sides, thereby reducing the velocity difference between the water mist in the center and the water mist on both sides and improving the uniformity of mist output in the second direction. The number of each sub-atomization zone can be determined, and the number of atomizing holes increases more as the distance from the center of the atomization zone increases, allowing more water mist on both sides to diffuse towards the center, further improving the uniformity of mist output in the second direction.

[0030] According to one embodiment of this application, the sub-atomization zone is provided with multiple rows of atomization holes, and the multiple rows of atomization holes are arranged sequentially at intervals along the second direction; each row of atomization holes has multiple atomization holes;

[0031] Within the same sub-atomization zone, the spacing between two adjacent columns of atomization holes is the same, and within each column of atomization holes, the spacing between two adjacent atomization holes is the same.

[0032] Facilitate the processing of the atomization holes in the atomization area and enable the atomization area to emit mist evenly in the first direction and the second direction.

[0033] According to an embodiment of the present application, it further includes:

[0034] A humidity detection device for detecting the air humidity S in the refrigerated compartment;

[0035] A compressor;

[0036] A controller, electrically connected to the humidity detection device and the compressor respectively, and the controller is configured to:

[0037] Under the condition that the box door (2) closes the refrigerated compartment and the compressor stops running;

[0038] When S < the first preset humidity S1, control the ultrasonic atomizer (31) to run intermittently for X cycles. In each cycle, first run for the first preset time T1, and then stop for the second preset time T2, X > 0;

[0039] When the first preset humidity S1 ≤ S < the second preset humidity S2, control the ultrasonic atomizer (31) to run intermittently for Y cycles. In each cycle, first run for the first preset time T1, and then stop for the second preset time T2, X / Y > 1 and X / Y ≤ 3, Y ≥ 5 and Y ≤ 15;

[0040] When S ≥ S2, control the ultrasonic atomizer to stop running.

[0041] When the humidity in the refrigerated compartment is low, the ultrasonic atomizer runs intermittently, which can extend the service life of the ultrasonic atomizer; when S < S1, control the ultrasonic atomizer 31 to run intermittently for X cycles, and when S1 ≤ S < S2, control the ultrasonic atomizer 31 to run intermittently for Y cycles. Divide the interval less than the second preset humidity into two humidity segments, and control the number of cycles of the ultrasonic atomizer 31 according to the humidity segment where the humidity in the refrigerated compartment is located. When the humidity in the refrigerated compartment is lower, more mist can be provided. Set X / Y > 1, X / Y ≤ 3, Y ≥ 5 and Y ≤ 15, which can ensure a certain humidification time, avoid stopping humidification prematurely, enable the humidity in the refrigerated compartment to be increased to a suitable range, improve the freshness preservation effect, and can avoid excessive humidification caused by too long humidification time and avoid the generation of condensation.

[0042] According to an embodiment of the present application, at least one shelf is installed on the inner side wall of the box door; when the humidification module is installed on the box door, the humidification module is located below one of the shelves;

[0043] The humidification module further includes:

[0044] The base is connected to the inner wall of the box door, and the side of the base away from the box door has a base opening. The base has an installation cavity that communicates with the base opening.

[0045] The humidifier box is detachably installed in the mounting cavity through the opening of the base; a spray nozzle is provided on the side of the humidifier box away from the door, and a buffer cavity communicating with the spray nozzle is formed inside the humidifier box;

[0046] The ultrasonic atomizer is installed at the end of the buffer chamber away from the spray nozzle. The mist passage is connected to the buffer chamber and faces the spray nozzle. The first direction and the second direction are parallel to the height direction and width direction of the door, respectively.

[0047] A buffer chamber is incorporated to allow the water mist to be buffered before flowing out from the spray nozzle. This prevents condensation on food items stored in the refrigeration compartment when they are close to the ultrasonic atomizer. The humidification module is placed below the shelf, facilitating humidification of the refrigeration compartment even when the door is closed. This also makes full use of the space below the shelf and facilitates the securing of the humidification module. The first direction is parallel to the height of the door, and the second direction is parallel to the width of the door. This design minimizes the size of the humidification module along the height of the compartment, reducing its footprint on the shelf and allowing taller items to be placed within it.

[0048] Secondly, embodiments of this application provide a refrigerator, comprising:

[0049] The enclosure contains a refrigeration compartment;

[0050] The cabinet door is used to open or close the refrigeration compartment;

[0051] A humidification module, installed on the cabinet or the cabinet door, is used to humidify the refrigeration chamber; the humidification module includes an ultrasonic atomizer, the ultrasonic atomizer comprising:

[0052] A piezoelectric vibrating element is ring-shaped and includes two first sides and two second sides. The two first sides are spaced apart along a first direction and both extend along a second direction. The two second sides are spaced apart along the second direction and both extend along the first direction. The two first sides and the two second sides are connected to form a fog-passing channel. The fog-passing channel penetrates the piezoelectric vibrating element in a third direction. The first direction, the second direction, and the third direction are perpendicular to each other.

[0053] An atomizing plate is connected to the piezoelectric vibration element to form an annular connection area. The atomizing plate covers the fogging channel and is located at the end of the fogging channel along the third direction. The atomizing plate has an atomizing area opposite to the fogging channel, which is located inside the connection area. The atomizing area has multiple atomizing holes penetrating the atomizing plate. The size of the atomizing area in the first direction is smaller than the size of the atomizing area in the second direction.

[0054] The vibration generated by the piezoelectric vibrating element is transmitted to the atomizing zone, causing the liquid on the surface of the atomizing zone to atomize into mist. The mist is ejected through the atomizing hole and discharged along the mist passage.

[0055] The stress generated by the piezoelectric vibration element is transmitted into the atomization zone along the first and second directions, with the center of the atomization zone experiencing the greatest force and amplitude. Since the size of the atomization zone in the first direction is smaller than that in the second direction, the distance transmitted along the first direction to the center of the atomization zone is less than that along the second direction. This results in smaller amplitude differences at different locations in the atomization zone along the first direction, and the initial velocity of the mist is basically consistent, leading to uniform mist output along the first direction. The water mist diffuses less and remains linear in the first direction, while the water mist is continuous in the second direction, forming a continuous, linear, and uniform water mist, improving the visual effect of the mist output. Furthermore, it allows the humidification module to be smaller in the first direction, reducing its footprint in the refrigerator. Attached Figure Description

[0056] To more clearly illustrate the implementation methods in the embodiments of this application or related technologies, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings.

[0057] Figure 1 This is a perspective view of a refrigerator according to an embodiment of this application;

[0058] Figure 2 This is a perspective view of a cabinet door according to an embodiment of this application;

[0059] Figure 3 This is a partial structural diagram of a humidification module according to an embodiment of this application;

[0060] Figure 4 This is a front view of an ultrasonic atomizer according to an embodiment of this application;

[0061] Figure 5 This is a perspective view of an ultrasonic atomizer according to an embodiment of this application;

[0062] Figure 6This is an exploded view of an ultrasonic atomizer according to an embodiment of this application;

[0063] Figure 7 This is a cross-sectional view of an ultrasonic atomizer according to an embodiment of this application;

[0064] Figure 8 This is a schematic diagram showing the division of the sub-atomization zone of an ultrasonic atomizer according to an embodiment of this application;

[0065] Figure 9 This is a schematic diagram of the atomizing hole according to an embodiment of this application;

[0066] Figure 10 This is an exploded view of a humidification module according to an embodiment of this application;

[0067] Figure 11 This is a partial structural cross-sectional view of a refrigerator according to an embodiment of this application;

[0068] Figure 12 This is a cross-sectional view of a humidification module according to an embodiment of this application;

[0069] Figure 13 This is an exploded view of a partial structure of a humidification module according to an embodiment of this application;

[0070] Figure 14 This is another exploded view of a partial structure of a humidification module according to an embodiment of this application;

[0071] Figure 15 This is a structural diagram of a humidifier box according to an embodiment of this application;

[0072] Figure 16 This is a partial exploded view of the humidification module according to an embodiment of this application;

[0073] Figure 17 This is a partial structural diagram of a humidifier box according to an embodiment of this application;

[0074] Figure 18 This is another partial structural diagram of a humidifier box body according to an embodiment of this application;

[0075] Figure 19 This is another partial structural diagram of a humidifier box body according to an embodiment of this application;

[0076] Figure 20 This is another partial structural diagram of a humidifier box according to an embodiment of this application;

[0077] Figure 21 This is a structural diagram of the first connector according to an embodiment of this application.

[0078] Explanation of reference numerals in the attached figures:

[0079] 1-Box;

[0080] 2-Box door; 21-Mounting slot; 22-Limiting wall;

[0081] 3-Humidification module;

[0082] 31-Ultrasonic atomizer; 311-Piezoelectric vibrating element; 3111-First side; 31111-First long side; 31112-Second long side; 3112-Second side; 31121-First short side; 31122-Second short side; 3113-Fog passage; 312-Atomizing plate; 3121-Atomizing area; 31211-Atomizing hole; 31212-Sub-atomizing area; M1-First sub-atomizing area; M2-Second sub-atomizing area; M3-Third sub-atomizing area; 3122-Connecting area;

[0083] 32-Base; 321-Base opening; 322-Mounting cavity; 323-Base body; 324-Base cover plate; 325-Mounting part;

[0084] 33-Humidifier box; 331-Spray nozzle; 332-Buffer chamber; 333-Water storage chamber; 334-Humidifier box body; 3341-Water storage tank; 33411-First water storage tank; 33412-Second water storage tank; 33413-Third water storage tank; 3342-First partition; 33421-First through hole; 33422-Support part; 33423-First limiting part; 33424-Second limiting part; 33425-Third limiting part; 33426-Fourth limiting part; 33427-First insertion space; 33428-Drainage support plate; 3343-Second partition; 3344-Third partition; 3345-First side panel; 33451-Side panel through hole; 335-Water tank cover; 3351-Water inlet hole; 336-Humidifier box cover; 3361-Allowing hole; 337-First connector; 3371-First insertion part; 3372-Connector abutment part; 33721-Abutment protrusion; 3373-Mist penetration hole; 338-Water inlet cover; 339-Box body abutment part; 3391-First box body abutment part; 3392-Second box body abutment part; 3393-Third box body abutment part; 3310-Flow limiting part; 33101-Placement space; 3311-Flow support part; 3312-Decorative panel;

[0085] 34-Drainage component; 341-First drainage section; 342-Second drainage section;

[0086] 35 - Seal; 351 - Seal through hole; 352 - Seal groove;

[0087] 4-Shelves. Detailed Implementation

[0088] To make the objectives, implementation methods and advantages of this application clearer, the exemplary implementation methods of this application will be clearly and completely described below with reference to the accompanying drawings of the exemplary embodiments of this application. Obviously, the described exemplary embodiments are only some embodiments of this application, and not all embodiments.

[0089] It should be noted that the brief descriptions of terms in this application are only for the convenience of understanding the embodiments described below, and are not intended to limit the embodiments of this application. Unless otherwise stated, these terms should be understood in their ordinary and common meaning.

[0090] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover but not exclusively include, for example, a product or device that includes a series of components is not necessarily limited to those that are explicitly listed, but may include other components that are not explicitly listed or that are inherent to such product or device.

[0091] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0092] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0093] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0094] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0095] As consumers' demands for food preservation quality continue to rise, refrigerator compartment environmental control technology is facing new challenges. Traditional refrigerators, which rely on low temperatures to delay spoilage, are no longer sufficient to meet consumers' demands for refined preservation indicators such as the moisture content of fruits and vegetables and the firmness of leafy greens. When the humidity inside the refrigerator compartment drops below 70%, leafy green vegetables can lose up to 15% of their moisture within 24 hours, and berries like strawberries experience a three-fold increase in skin wrinkling. This not only accelerates the loss of nutrients but also affects the taste and commercial value of the food. Especially in scenarios where frequent opening and closing of the refrigerator door causes drastic humidity fluctuations, traditional humidity control technologies often suffer from slow response times and slow humidity recovery, making it difficult to maintain a stable humidity environment.

[0096] In related technologies, increasing the humidity of the storage environment improves the preservation effect of food. Ultrasonic atomization humidification technology has advantages such as rapid humidification and low energy consumption and low cost, and is therefore applied to refrigerators due to its unique advantages.

[0097] Currently, in the humidification industry, ultrasonic atomizers use circular atomizing plates. The closer to the center of the circular atomizing plate, the larger its amplitude and the faster the water mist spray speed. Conversely, the closer to the edge, the weaker the amplitude and the slower the water mist spray speed. Because the water mist generated in the central area of ​​the circular atomizing plate has a higher initial velocity and experiences less air resistance, while the water mist at the edge has a slower initial velocity and experiences greater resistance, it diffuses more easily. Furthermore, since the water mist at the center travels at a continuous high speed forward, the water mist at the edge diffuses more easily towards the edge. This velocity gradient from center to edge causes the mist particles in the central area to be ahead, while the mist particles in the edge area lag behind and diffuse outwards, thus forming a cone-shaped diffused water mist. When the holes on the circular atomizing plate are distributed in a ring, the number of holes increases towards the outer edge. This hole distribution results in more water mist with a slower initial velocity, further exacerbating the formation of this cone-shaped water mist.

[0098] Because the water mist formed by the circular atomizing plate diffuses in a cone shape, the mist output is uneven. When multiple circular atomizing plates are arranged at intervals, the differences between each atomizing plate lead to poor consistency and uneven mist output, and even the appearance of mist output breaks. It is difficult to form a linear uniform mist, and the overall height of the humidification module is relatively large, which occupies a lot of space inside the refrigerator, affecting the setting of other structures and the storage of items. In particular, when placed under the shelf, it occupies the shelf space, making it impossible to place tall items on the shelf.

[0099] To address the aforementioned technical problems, this application proposes a refrigerator, comprising a cabinet, a door, and a humidification module. The humidification module is installed on the cabinet or the door and is used to humidify the cooling compartment. The humidification module includes an ultrasonic atomizer, which comprises a piezoelectric vibrating element and an atomizing plate. The piezoelectric vibrating element is annular and includes two first sides and two second sides. The two first sides are spaced apart along a first direction and extend along a second direction, while the two second sides are spaced apart along the second direction and extend along the first direction. The two first sides and two second sides are connected to form a fogging channel, which penetrates the piezoelectric vibrating element in a third direction. The first, second, and third directions are perpendicular to each other. The distance between the two second sides is greater than the distance between the two first sides. The atomizing plate is connected to the piezoelectric vibrating element to form an annular connecting area. The atomizing plate covers the fogging channel and is located at the end of the fogging channel along the third direction. The atomizing plate has an atomizing area opposite to the fogging channel, located inside the connecting area, and has multiple atomizing holes penetrating the atomizing plate. The vibration generated by the piezoelectric vibrating element is transmitted to the atomizing zone, causing the liquid on the surface of the atomizing zone to atomize into mist. The mist is ejected through the atomizing holes and discharged along the mist passage. The piezoelectric vibrating element includes two first sides and two second sides, with the distance between the two second sides being greater than the distance between the two first sides, allowing the piezoelectric vibrating element to be approximately a rectangular ring. The stress generated by the piezoelectric vibrating element is transmitted into the atomizing zone along the first and second directions, with the center of the atomizing zone experiencing the greatest force and amplitude. Because the distance between the two second sides is greater than the distance between the two first sides, the distance transmitted along the first direction to the center of the atomizing zone is less than the distance transmitted along the second direction, resulting in smaller amplitude differences at different locations in the atomizing zone along the first direction. This ensures that the initial velocity of the mist is basically consistent, resulting in uniform mist output along the first direction. The water mist diffusion in the first direction is small and remains linear, while the water mist is continuous in the second direction, forming a continuous, linear, and uniform water mist, improving the visual effect of the mist output. Furthermore, it allows the humidifying module to be smaller in the first direction, reducing its footprint in the refrigerator.

[0100] The refrigerator provided in this application will now be described with reference to the accompanying drawings and specific embodiments.

[0101] refer to Figure 1 and Figure 2This application provides a refrigerator. The refrigerator may include a cabinet 1. The cabinet 1 has a refrigeration compartment. Multiple refrigeration compartments may be provided. Each refrigeration compartment may include a refrigerator compartment and a freezer compartment.

[0102] The refrigerator may include a door 2 for opening or closing the cooling compartment. The door 2 may be rotatably connected to the body 1, allowing the door 2 to open or close the cooling compartment. The door 2 and body 1 may be hinged, allowing the door 2 to rotate relative to the body 1. The door 2 may include a refrigerator door for closing the cooling compartment. The door 2 may also include a freezer door for closing the freezer compartment.

[0103] The height of box 1 can be defined as the distance from its bottom to its top. Box 1 also has a width direction, which can be defined as the distance from one end of box 1 to its other end. Finally, box 1 has a front-to-back direction, which can be defined as the distance from its front to its rear. Of the height, width, and front-to-back directions of box 1, at least two are perpendicular to each other.

[0104] In some embodiments, the refrigerator may include a refrigeration system. The refrigeration system may include a compressor, a condenser, a throttling device, and an evaporator connected in a cycle.

[0105] During refrigeration system operation, the compressor compresses refrigerant vapor, generating high-temperature, high-pressure refrigerant vapor, and delivers it to the condenser. The condenser liquefies the high-temperature, high-pressure refrigerant vapor, generating high-temperature, low-pressure refrigerant liquid, which is then delivered to the throttling device. The throttling device reduces the pressure of the refrigerant liquid, transforming it from a high-pressure, low-temperature liquid into a low-pressure, low-temperature liquid, which is then delivered to the evaporator. The evaporator receives the low-pressure, low-temperature refrigerant liquid and boils it under isobaric conditions, absorbing heat and vaporizing to form refrigerant vapor, thereby lowering the temperature inside the refrigerated room.

[0106] In some embodiments, reference Figure 3 The refrigerator may include a humidification module 3. The humidification module 3 is used to humidify the cooling compartment. The humidification module 3 is installed on the cabinet body 1 or the door 2. Specifically, the humidification module 3 is installed on the door 2 and is used to humidify the refrigerator compartment.

[0107] refer to Figure 3 and Figure 4 The humidification module 3 includes an ultrasonic atomizer 31. The ultrasonic atomizer 31 includes a piezoelectric vibrating element 311. The piezoelectric vibrating element 311 is used to generate vibration. The piezoelectric vibrating element 311 can be a piezoelectric ceramic, which enables the generation of a stable and precise vibration frequency and is lightweight, suitable for the goal of lightweight design in existing refrigerators.

[0108] refer to Figure 5 , Figure 6 and Figure 7 The piezoelectric vibrating element 311 is ring-shaped. The piezoelectric vibrating element 311 may include two first sides 3111. The two first sides 3111 are spaced apart along a first direction. Furthermore, both first sides 3111 extend along a second direction. The first direction is perpendicular to the second direction.

[0109] The piezoelectric vibrating element 311 may include two second sides 3112. The two second sides 3112 are spaced apart along a second direction. Furthermore, both second sides 3112 extend along a first direction.

[0110] Two first sides 3111 and two second sides 3112 are connected to form a ring-shaped piezoelectric vibrating element 311. Furthermore, the two first sides 3111 and two second sides 3112 are connected to form a fogging channel 3113. The fogging channel 3113 penetrates the piezoelectric vibrating element 311 in a third direction. This third direction is perpendicular to both the second and first directions; that is, the first, second, and third directions are mutually perpendicular. The distance between the two second sides 3112 is greater than the distance between the two first sides 3111, making the piezoelectric vibrating element approximately a rectangular ring. The first and second directions can be parallel to the height and width directions of the cabinet door, respectively. Furthermore, when the cabinet door 2 closes the refrigeration compartment, the second direction is parallel to the width direction of the cabinet body 1.

[0111] refer to Figure 8 and Figure 9 The ultrasonic atomizer 31 may include an atomizing plate 312. The atomizing plate 312 is connected to the piezoelectric vibrating element 311 and forms an annular connecting area 3122. The atomizing plate 312 covers the misting channel 3113 and is located at the end of the misting channel along a third direction. The atomizing plate 312 has an atomizing area 3121 opposite to the misting channel 3113, located inside the connecting area 3122. Multiple atomizing holes 31211 penetrating the atomizing plate 312 are provided at the atomizing area 3121. Specifically, the atomizing holes 31211 penetrate the atomizing area 3121 in a third direction. Specifically, the atomizing plate 312 can be a metal plate or a steel sheet. The diameter of the atomizing holes is R, where R ≥ 1 μm and R ≤ 10 μm, capable of forming water mist.

[0112] The vibration generated by the piezoelectric vibrating element 311 is transmitted to the atomizing zone 3121, causing the liquid on the surface of the atomizing zone 3121 to atomize into mist. The mist is sprayed out through the atomizing hole 31211 and discharged along the mist passage 3113.

[0113] The ultrasonic atomizer 31 includes a piezoelectric vibrating element 311 and an atomizing plate 312. The piezoelectric vibrating element 311 has a mist-passing channel 3113, and the atomizing plate 312 has an atomizing area 3121 opposite to the mist-passing channel 3113. The atomizing area 3121 has multiple atomizing holes 31211 that penetrate the atomizing plate 312, which can form mist. When the ultrasonic atomizer 31 is working, the humidification speed is fast, and the ultrasonic atomizer 31 has low energy consumption and low cost.

[0114] The piezoelectric vibrating element comprises two first sides 3111 and two second sides 3112. The distance between the two second sides 3112 is greater than the distance between the two first sides 3111, allowing the piezoelectric vibrating element to roughly form a rectangular ring. The stress generated by the piezoelectric vibrating element is transmitted into the atomization zone along the first and second directions, with the center of the atomization zone experiencing the greatest force and amplitude. Because the distance between the two second sides 3112 is greater than the distance between the two first sides 3111, the distance transmitted along the first direction to the center of the atomization zone is less than the distance transmitted along the second direction. This results in smaller amplitude differences at different locations in the atomization zone along the first direction, and the initial velocity of the mist is basically consistent, leading to uniform mist output along the first direction. The water mist diffuses less and remains linear in the first direction, while the water mist is continuous in the second direction, forming a continuous, linear, and uniform water mist, improving the visual effect of the mist output. Furthermore, it allows the humidification module to be smaller in size in the first direction, reducing its footprint in the refrigerator.

[0115] In some embodiments, the size of the atomizing region 3121 in the first direction is smaller than that in the second direction, making the atomizing region approximately rectangular. The stress generated by the piezoelectric vibration element is transmitted into the atomizing region along the first and second directions, with the center of the atomizing region experiencing the greatest force and amplitude. Because the size of the atomizing region 3121 in the first direction is smaller than that in the second direction, the distance transmitted along the first direction to the center of the atomizing region is less than the distance transmitted along the second direction to the center of the atomizing region. This results in smaller amplitude differences at different locations in the atomizing region along the first direction, and the initial velocity of the mist is basically consistent, leading to uniform mist output along the first direction. The water mist diffuses less and remains linear in the first direction, while the water mist is continuous in the second direction, forming a continuous, linear, and uniform water mist, improving the visual effect of the mist output. Furthermore, it allows the humidifying module to be smaller in the first direction, reducing its footprint in the refrigerator.

[0116] In some embodiments, the piezoelectric vibrating element 311 may include a first long side 31111 and a second long side 31112. The first long side 31111 and the second long side 31112 are spaced apart along a first direction. Furthermore, both the first long side 31111 and the second long side 31112 extend along a second direction. The two first sides 3111 are respectively the first long side 31111 and the second long side 31112.

[0117] The piezoelectric vibrating element 311 may include a first short side 31121 and a second short side 31122. The first short side 31121 and the second short side 31122 are spaced apart along a second direction. Furthermore, both the first short side 31121 and the second short side 31122 extend along a first direction. The two second sides 3112 are respectively the first short side 31121 and the second short side 31122.

[0118] The first long side 31111, the first short side 31121, the second long side 31112, and the second short side 31122 are connected end to end in sequence to form a ring-shaped piezoelectric vibration unit. Furthermore, the first long side 31111, the first short side 31121, the second long side 31112, and the second short side 31122 are connected end to end in sequence to form a fog passage 3113.

[0119] In some embodiments, reference Figure 8 The distance between the two first sides 3111 is G1, G1≥4mm and G1≤10mm, and the distance between the two second sides 3112 is G2, G2≥40mm and G2≤70mm.

[0120] When G1 is too small, the size of the atomizing area 3121 along the first direction is too small, resulting in insufficient area for setting atomizing holes and making the continuous linear water mist too thin. When G1 is too large, the amplitude difference between different positions of the atomizing area 3121 along the first direction is too large, causing severe diffusion of water mist in the first direction, making the water mist not linear, and making the size of the humidifying module in the first direction larger, thus occupying more refrigerator space. Setting G1 ≥ 4mm ensures that the size of the atomizing area 3121 along the first direction is not too small, providing sufficient area for setting atomizing holes 31211 and avoiding the formation of too thin linear water mist. Setting G1 ≤ 10mm avoids that the size of the atomizing area 3121 along the first direction is too large, avoids excessive amplitude difference between different positions of the atomizing area 3121 along the first direction, avoids severe diffusion of the formed water mist in the first direction, and can form linear water mist, thereby reducing the size of the humidifying module 3 in the first direction and reducing the space occupied by the humidifying module 3 in the first direction.

[0121] If G2 is too large, the first side of the piezoelectric vibrating element 311 becomes too long, making it prone to breakage. If G2 is too small, the width of the continuous linear water mist is too small, making it difficult to meet the humidification needs of the cooling room. Setting G2 ≥ 40mm ensures that the continuous linear water mist is wide enough to humidify the cooling room more quickly. Setting G2 ≤ ​​70mm avoids the first side of the piezoelectric vibrating element 311 becoming too long, facilitating installation, preventing breakage during installation or operation, and extending the lifespan of the piezoelectric vibrating element 311.

[0122] In some embodiments, reference Figure 8 The distance between the two first sides 3111 is G1, and the distance between the two second sides 3112 is G2, where G2 / G1≥2 and G2 / G1≤20.

[0123] Setting G2 / G1 too large makes the first side too long relative to the second side, which can easily cause the piezoelectric vibration element 311 to break, and makes the continuous linear water mist relatively thin, resulting in poor mist output. Setting G2 / G1 too small makes the amplitude difference between the atomization zone in the first direction and the amplitude difference in the second direction smaller. Compared with the amplitude difference in the second direction, the amplitude difference in the first direction is relatively large, resulting in a large difference in the initial velocity of the mist along the first direction. This leads to severe water mist diffusion along the first direction, uneven mist output, and difficulty in forming a linear and uniform water mist. Setting G2 / G1≥2 and G2 / G1≤20 avoids making the first side too long relative to the second side, preventing the piezoelectric vibration element 311 from breaking and extending its service life. Compared with the amplitude difference of the atomization zone in the second direction, the amplitude difference of the atomization zone at different positions along the first direction is small, and the initial velocity of the mist is basically the same, making the mist output uniform along the first direction. The diffusion of water mist in the first direction is small and remains linear, and the water mist is continuous in the second direction, which can form a continuous linear uniform water mist and avoid the continuous linear water mist being relatively too thin, thus improving the visual effect of the mist output.

[0124] In some embodiments, since the distance between the two second sides 3112 is greater than the distance between the two first sides 3111, the amplitude difference at different positions of the atomization zone is relatively large in the second direction compared to the first direction, resulting in a certain diffusion of water mist in the second direction. Compared to the first direction, the fog appears relatively uneven in the second direction, with more fog in the middle and less on the sides. However, a longer water mist can be obtained in the second direction, and the water mist radiation range is larger.

[0125] In some embodiments, reference Figure 8 The atomizing zone 3121 includes multiple sub-atomizing zones 31212. The multiple sub-atomizing zones 31212 are arranged along the second direction, and adjacent sub-atomizing zones 31212 are connected or spaced apart.

[0126] The ratio of the sum of the areas of all atomizing holes 31211 on the surface of the sub-atomizing region 31212 to the surface area of ​​the sub-atomizing region is the atomizing hole coverage rate. Along the second direction, from the center of the atomizing region to its edge, two adjacent sub-atomizing regions 31212 are respectively the first sub-atomizing region M1 and the second sub-atomizing region M2. The minimum distances between the first sub-atomizing region M1 and the second sub-atomizing region M2 and the center of the atomizing region 3121 are the first distance H1 and the second distance H2, respectively, where H2>H1 and H1≥0. The atomizing hole coverage rates of the first sub-atomizing region M1 and the second sub-atomizing region M2 are the first coverage rate P1 and the second coverage rate P2, respectively, where P2>P1 and P1>0.

[0127] Setting P2>P1 ensures that along the second direction, the closer to the center of the atomization zone, the less coverage of the atomization holes. This results in a lower fog density in the center of the atomization zone and a higher fog density on both sides. This allows the water mist on both sides to diffuse towards the center, and the water mist with a higher velocity in the center to drive the water mist with a lower velocity on both sides. This reduces the velocity difference between the water mist in the center and the water mist on both sides, and improves the uniformity of fog output in the second direction.

[0128] In some embodiments, reference Figure 8 The atomizing zone 3121 includes multiple sub-atomizing zones 31212. The multiple sub-atomizing zones 31212 are arranged along the second direction, and adjacent sub-atomizing zones 31212 are connected or spaced apart.

[0129] The ratio of the sum of the areas of all atomizing holes 31211 on the surface of the sub-atomizing region 31212 to the surface area of ​​the sub-atomizing region is the atomizing hole coverage rate. Along the second direction, from the center of the atomizing region to the edge of the atomizing region, three adjacent sub-atomizing regions 31212 are respectively the first sub-atomizing region M1, the second sub-atomizing region M2, and the third sub-atomizing region M3. The minimum distances between the first sub-atomizing region M1, the second sub-atomizing region M2, and the third sub-atomizing region M3 and the center of the atomizing region 3121 are the first distance H1, the second distance H2, and the third distance H3, respectively, where H3>H2, H2>H1, and H1≥0. The atomizing hole coverage rates of the first sub-atomizing region M1, the second sub-atomizing region M2, and the third sub-atomizing region M3 are the first coverage rate P1, the second coverage rate P2, and the third coverage rate P3, respectively, where P3>P2, P2>P1, P1>0, and P3-P2>P2-P1.

[0130] Setting P3>P2, P2>P1, P1>0, and P3-P2>P2-P1 ensures that along the second direction, the closer to the center of the atomization zone, the less coverage of the atomization holes. This results in a lower fog density in the center of the atomization zone and a higher fog density on both sides, allowing the water mist on both sides to diffuse towards the center. The water mist with higher velocity in the center carries the water mist with lower velocity on both sides, reducing the velocity difference between the water mist in the center and on both sides, and improving the uniformity of fog output in the second direction. Furthermore, the farther away from the center of the atomization zone, the greater the increase in atomization hole coverage, causing more water mist on both sides to diffuse towards the center, further improving the uniformity of fog output in the second direction.

[0131] In some embodiments, reference Figure 8 The atomizing zone 3121 includes multiple sub-atomizing zones 31212. The multiple sub-atomizing zones 31212 are arranged along the second direction, and adjacent sub-atomizing zones 31212 are connected.

[0132] The sub-atomizing regions 31212 within the atomizing region 3121 have equal dimensions in the second direction, and the diameters of the atomizing holes 31211 within the atomizing region 3121 are all equal.

[0133] Along the second direction, from the center of the atomization zone 3121 to the edge of the atomization zone 3121, there are N sub-atomization zones 31212, which are successively the first sub-atomization zone M1 to the Nth sub-atomization zone, N≥1. The number of atomization holes 31211 in the Nth atomization zone is Q=(0.125N(N-1)+1)W, where W is an integer greater than 0 and W is a multiple of 4, so that the number of atomization holes 31211 in the Nth atomization zone is an integer. Specifically, W can be 40, the number of atomizing holes in the first atomizing zone is W, that is, the number of atomizing holes in the first atomizing zone is 40, the number of atomizing holes in the second atomizing zone is 1.25W, that is, the number of atomizing holes in the second atomizing zone is 50, the number of atomizing holes in the third atomizing zone is 1.75W, that is, the number of atomizing holes in the third atomizing zone is 70, and the number of atomizing holes in the fourth atomizing zone is 2.5W, that is, the number of atomizing holes in the fourth atomizing zone is 100.

[0134] The number of atomizing holes 31211 in the Nth atomization zone is set to Q = (0.125N(N-1)+1)W, so that the closer to the center of the atomization zone along the second direction, the fewer the number of atomizing holes in the sub-atomization zone. This results in a lower mist density in the center of the atomization zone and a higher mist density on both sides along the second direction. This allows the water mist on both sides to diffuse towards the center, and the water mist with a higher velocity in the center to drive the water mist with a lower velocity on both sides, thereby reducing the velocity difference between the water mist in the center and the water mist on both sides and improving the uniformity of mist output in the second direction. The number of each sub-atomization zone can be determined, and the number of atomizing holes increases more as the distance from the center of the atomization zone increases, allowing more water mist on both sides to diffuse towards the center, further improving the uniformity of mist output in the second direction.

[0135] In some embodiments, reference Figure 9 The sub-atomizing zone 31212 is provided with multiple rows of atomizing holes 31211, which are arranged sequentially and at intervals along the second direction. Each row of atomizing holes 31211 has multiple atomizing holes 31211. Within the same sub-atomizing zone 31212, the spacing between two adjacent rows of atomizing holes 31211 is the same, and within each row of atomizing holes 31211, the spacing between two adjacent atomizing holes 31211 is also the same. This facilitates the processing of atomizing holes within the sub-atomizing zone and ensures uniform mist output from the atomizing zone in both the first and second directions.

[0136] In some embodiments, the refrigerator includes a humidity detection device. The humidity detection device is used to detect the air humidity S inside the cooling compartment. The refrigerator also includes a controller. The controller is electrically connected to the humidity detection device and to the compressor. The controller is capable of acquiring the air humidity S detected by the humidity detection device. The controller is capable of acquiring the operating status of the compressor.

[0137] The controller is configured as follows:

[0138] Under the condition that the refrigeration compartment is closed by door 2 and the compressor stops running;

[0139] When S < the second preset humidity S2, control the ultrasonic atomizer 31 to run intermittently for a certain period of time.

[0140] When S≥S2, the ultrasonic atomizer 31 is controlled to stop operating.

[0141] Because the ultrasonic atomizer 31 has different dimensions along the first and second directions, the stress on the ultrasonic atomizer 31 is uneven, and the piezoelectric vibration element is relatively fragile. Long-term operation will cause the piezoelectric vibration element 311 to break. Therefore, when the humidity in the refrigeration room is low, the ultrasonic atomizer 31 can be set to run intermittently, which can extend the service life of the ultrasonic atomizer 31.

[0142] Specifically, S2 ≥ 70% and S2 ≤ 80%. When the humidity in the refrigeration room is less than 70%, the humidity is relatively low, affecting the freshness of the food inside, requiring humidification. When the humidity in the refrigeration room is 80%, the humidity has reached a certain level, which can better preserve the food. Further increasing the humidity will cause condensation. Therefore, setting S2 ≥ 70% and S2 ≤ 80% can prevent premature humidification, allowing the humidity in the refrigeration room to be raised to a suitable range, improving the preservation effect, and avoiding condensation caused by continuing to humidify when the humidity in the refrigeration room is already high.

[0143] In some embodiments, the controller is configured to:

[0144] Under the condition that the refrigeration compartment is closed by door 2 and the compressor stops running;

[0145] When S < the first preset humidity S1, control the ultrasonic atomizer 31 to operate intermittently for X cycles. In each cycle, first operate for the first preset time T1, and then stop for the second preset time T2, where X > 0;

[0146] When the first preset humidity S1 ≤ S < the second preset humidity S2, control the ultrasonic atomizer 31 to operate intermittently for Y cycles. In each cycle, first operate for the first preset time T1, and then stop for the second preset time T2, where Y > 0, X / Y > 1 and X / Y ≤ 3, and / or Y ≥ 5 and Y ≤ 15.

[0147] When setting S < S1, control the ultrasonic atomizer 31 to operate intermittently for X cycles. When S1 ≤ S < S2, control the ultrasonic atomizer 31 to operate intermittently for Y cycles. Divide the interval less than the second preset humidity into two humidity segments, and control the number of cycles of the ultrasonic atomizer 31 according to the humidity segment where the humidity in the refrigeration chamber is located, so that more mist can be provided when the humidity in the refrigeration chamber is lower.

[0148] Setting X / Y > 1 and X / Y ≤ 3, Y ≥ 5 and Y ≤ 15 can ensure a certain humidification time, avoid premature stopping of humidification, enable the humidity in the refrigeration chamber to be increased to a suitable range, improve the freshness preservation effect, and can avoid excessive humidification caused by too long humidification time and avoid condensation.

[0149] Setting Y ≥ 5 and Y ≤ 15 can ensure a certain humidification time when S1 ≤ S < S2, avoid premature stopping of humidification, enable the humidity in the refrigeration chamber to be increased to a suitable range, improve the freshness preservation effect, and can avoid excessive humidification caused by too long humidification time and avoid condensation.

[0150] Setting Y > 0, X / Y > 1 and X / Y ≤ 3 can provide more mist when the humidity in the refrigeration chamber is lower, and can avoid large differences in the amount of mist provided, resulting in insufficient humidification and excessive humidification.

[0151] Among them, S1 ≥ 50% and S1 ≤ 60%. When the humidity in the refrigeration chamber is less than 50%, the food ingredients are dehydrated and require a longer humidification time. When setting S1 to be greater than or equal to 60%, not too much humidification time is required, and excessive humidification will cause condensation. Setting S1 ≥ 50% and S1 ≤ 60% can avoid premature stopping of humidification, enable the humidity in the refrigeration chamber to be increased to a suitable range, improve the freshness preservation effect, and can avoid humidification when the humidity in the refrigeration chamber is relatively high, thus avoiding condensation.

[0152] Specifically, T1 / (T1+T2)≥1 / 18 and T1 / (T1+T2)≤1 / 6 are set to avoid slow humidification due to excessively short operating time within one operating cycle, and to avoid breakage of the piezoelectric vibration element 311 due to excessively long humidification time. Specifically, the sum of the first preset time T1 and the second preset time T2 can be 180s, where T1≥10s and T1≤30s.

[0153] In some embodiments, reference Figure 2 The refrigerator may include shelves 4. At least one shelf 4 is installed on the inner side wall of the door 2. The shelf 4 is used to store items. The opening of the shelf 4 is located at the top of the shelf 4, allowing items to be placed inside the shelf 4. When the door 2 has multiple shelves 4, the multiple shelves 4 are spaced apart along the height direction of the door 2. When a humidifying module 3 is installed on the door 2, the humidifying module 3 is located below one of the shelves 4.

[0154] refer to Figure 10 The humidification module 3 includes a base 32. The base 32 is connected to the inner wall of the door 2. A base opening 321 is formed on the side of the base 32 opposite to the door 2. An installation cavity 322 is formed inside the base 32. The installation cavity 322 communicates with the base opening 321.

[0155] In some embodiments, reference Figure 10 The base 32 may include a base body 323 and a base cover 324. The base cover 324 is connected to the top of the base body 323. The base cover 324 and the base body 323 are connected to form a base opening 321 and a mounting cavity 322.

[0156] In some embodiments, reference Figure 10 and Figure 11 The base 32 is provided with a mounting part 325. The inner side wall of the door 2 is provided with a mounting groove 21. The top of the opening of the mounting groove 21 is provided with a limiting wall 22. When installing the humidifying module 3, the humidifying module 3 is tilted upward so that the mounting part 325 extends into the mounting groove 21, the top of the mounting part 325 abuts against the limiting wall 22, and under the weight of the humidifying module 3, the mounting part 325 abuts against the bottom wall of the mounting groove 21, thereby making the humidifying module 3 stably installed on the door 2.

[0157] The base 32 has at least two mounting portions 325. Each mounting portion 325 corresponds to a mounting slot 21. The mounting portions 325 are located on the side of the base 32 near the door 2. The mounting portions 325 can be connected to the outer wall of the base body 323. Furthermore, the mounting portions 325 are connected to the outer wall of the base body 323 opposite to the base opening 321.

[0158] In some embodiments, reference Figure 10 and Figure 12 The humidification module 3 includes a humidification box 33. The humidification box 33 is detachably installed in the mounting cavity 322 through the base opening 321. A spray nozzle 331 is provided on the side of the humidification box 33 away from the door 2. A buffer cavity 332 communicating with the spray nozzle 331 is formed inside the humidification box 33.

[0159] An ultrasonic atomizer 31 is installed within a buffer chamber 332. Specifically, the ultrasonic atomizer 31 is located at the end of the buffer chamber 332 furthest from the spray nozzle 331. A mist-passing channel 3113 communicates with the buffer chamber 332 and faces the spray nozzle 331. A first direction is parallel to the height direction of the door 2, and a second direction is parallel to the width direction of the door 2. The spray nozzle 331 extends along the second direction.

[0160] Along the third direction, the distance between the ultrasonic atomizer 31 and the spray nozzle 331 is the fourth distance H4. H4 ≥ 45mm and H4 ≤ 65mm. If the water mist generated by the ultrasonic atomizer 31 sprays too fast and encounters obstacles such as food, the high-speed water mist can easily condense into water droplets upon impact with the food. A buffer chamber is provided so that the water mist is buffered within the buffer chamber before flowing out of the spray nozzle. When there is a lot of food stored in the refrigeration compartment and the food is close to the ultrasonic atomizer, the problem of condensation on the food can be avoided. Setting H4 ≥ 45mm ensures a significant buffering effect and reduces condensation. Setting H4 ≤ 65mm ensures that the water mist still has a certain speed after flowing out of the spray nozzle, which is beneficial for the water mist to be sprayed into the refrigeration compartment and avoids the humidification module being too large in the third direction, reducing its space occupation inside the refrigerator.

[0161] The humidification module is placed below the shelf, which makes it convenient to humidify the refrigeration compartment when the cabinet door is closed, and can make full use of the space under the shelf to facilitate the fixing of the humidification module. The first direction is parallel to the height direction of the cabinet door 2, and the second direction is parallel to the width direction of the cabinet door 2. This makes the size of the humidification module along the height direction of the cabinet smaller, reducing the space occupied by the humidification module on the shelf, so that taller items can be placed inside the shelf.

[0162] In some embodiments, reference Figure 13 , Figure 14 and Figure 15 The humidifier box 33 has a water storage chamber 333. The humidifier module 3 includes a flow guide 34. The flow guide 34 is used to guide the water in the water storage chamber 333 to the atomization zone 3121. The flow guide 34 can be absorbent cotton.

[0163] The diversion element 34 is at least partially disposed within the water storage cavity 333. The diversion element 34 is located on the side of the atomizing zone 3121 away from the mist passage 3113. Furthermore, the diversion element 34 is in contact with the atomizing zone 3121 and is able to divert water from the water storage cavity 333 to the surface of the atomizing zone 3121.

[0164] In some embodiments, the humidifier box 33 includes a humidifier box body 334. A water storage tank 3341 is formed inside the humidifier box body 334. The top of the water storage tank 3341 is open. The humidifier box 33 includes a water storage tank cover 335. The water storage tank cover 335 is located at the top of the water storage tank 3341, and the water storage tank cover 335 is connected to the humidifier box body 334 to form a water storage cavity 333.

[0165] The water tank cover 335 has a water inlet 3351 that penetrates the water tank cover 335. The water inlet 3351 connects the water storage cavity 333 and the external space of the water storage cavity 333 to facilitate the injection of water into the water storage cavity 333. The humidifier box 33 includes a water inlet cover 338, which is connected to the water tank cover 335 and is used to open or close the water inlet 3351.

[0166] In some embodiments, reference Figure 13 , Figure 14 and Figure 15 The humidifier box 334 has a buffer cavity 332 inside. The top of the buffer cavity 332 is open. The humidifier box 33 includes a humidifier box cover 336. The humidifier box cover 336 is detachably connected to the humidifier box body 334. The humidifier box cover 336 is located above the water tank cover 335 and the buffer cavity 332. The humidifier box cover 336 has a clearance hole 3361, which is used to avoid the water filling cap 338, facilitating the connection between the water filling cap 338 and the water tank cover.

[0167] In some embodiments, reference Figure 13 , Figure 14 and Figure 15 The water storage tank 3341 includes a first water storage tank 33411, which is located on the side of the buffer chamber 332 away from the spray nozzle 331.

[0168] The humidifier housing 334 includes a first partition 3342. The first partition 3342 is disposed between the first water storage tank 33411 and the buffer chamber 332. The first partition 3342 has a first through hole 33421. The first through hole 33421 connects the first water storage tank 33411 and the buffer chamber 332. The flow guide 34 is at least partially disposed in the first water storage tank 33411. The flow guide 34 is inserted into the first through hole 33421 and contacts the atomizing zone 3121.

[0169] In some embodiments, the water storage tank 3341 includes a second water storage tank 33412 and a third water storage tank 33413. Both the second water storage tank 33412 and the third water storage tank 33413 are connected to the first water storage tank 33411. Along the second direction, the end of the buffer chamber 332 away from the spray nozzle 331 is located between the second water storage tank 33412 and the third water storage tank 33413.

[0170] The humidifier housing 334 includes a second partition 3343, which is located between the second water storage tank 33412 and the buffer chamber 332. The humidifier housing 334 may also include a third partition 3344, which is located between the third water storage chamber 333 and the buffer chamber 332.

[0171] In some embodiments, reference Figure 16 The humidification module 3 may include a seal 35. The seal 35 has a through hole 351 extending through it in a third direction. A ring-shaped groove 352 is provided on the side wall of the through hole 351. An ultrasonic atomizer 31 is disposed within the through hole 351, and its outer edges are all within the groove 352. A single seal is sufficient to achieve a seal, preventing leakage at the ultrasonic atomizer and facilitating installation. The seal 35 is a rubber sealing ring.

[0172] In some embodiments, reference Figure 17 A support portion 33422 is provided on the side of the first partition 3342 near the spray nozzle 331. A seal 35 and an ultrasonic atomizer 31 are mounted on the support portion 33422. A first limiting portion 33423 and a second limiting portion 33424 are provided on the side of the first partition 3342 near the spray nozzle 331. The seal 35 and the ultrasonic atomizer 31 are located between the first limiting portion 33423 and the second limiting portion 33424. A third limiting portion 33425 is provided on the side of the first partition 3342 near the spray nozzle 331, and the third limiting portion 33425 is located above the seal 35 and the ultrasonic atomizer 31.

[0173] In some embodiments, reference Figure 18 , Figure 19 , Figure 20 and Figure 21The humidification module 3 may include a first connector 337. The first connector 337 is disposed within the buffer chamber 332 and is connected to the humidification box body 334. The first connector 337 defines the seal 35 and the ultrasonic atomizer 31 on the support portion 33422. Along a third direction, the seal 35 and the ultrasonic atomizer are sandwiched between the first connector 337 and the first partition 3342. The first connector 337 is detachably connected to the humidification box body 334. The first connector 337 has a mist-penetrating hole 3373 that penetrates the first connector. The mist-penetrating hole 3373 is positioned opposite to the mist-passing channel, allowing the generated water mist to pass through the first connector 337 and be sprayed into the spray nozzle.

[0174] Specifically, the first partition 3342 is provided with a fourth limiting part 33426. The first partition 3342 is provided with a first insertion space 33427 located below the fourth limiting part 33426. One end of the first insertion space 33427 along the second direction can be open.

[0175] The first connector 337 is provided with a first insertion part 3371. When the first connector 337 is connected to the humidifier box 334, the first insertion part 3371 is inserted into the first insertion space 33427, and the fourth limiting part 33426 can limit the first insertion part 3371 above the first insertion part 3371.

[0176] The humidifier box 33 includes a box body abutment portion 339. The box body abutment portion 339 is disposed within a buffer cavity 332. The box body abutment portion 339 is located at the bottom end of the buffer cavity 332. The bottom end of the box body abutment portion 339 is connected to the humidifier box body 334; specifically, the bottom end of the box body abutment portion 339 is connected to the bottom wall of the buffer cavity 332.

[0177] The first connector 337 is provided with a connector abutment portion 3372. When the first connector 337 is connected to the humidifier box body 334, the first insertion portion 3371 is inserted into the first insertion space 33427, the first connector 337 abuts against the first partition 3342, and the box body abutment portion 339 abuts against the connector abutment portion 3372.

[0178] The connector abutment portion 3372 has at least two parts. The connector abutment portion 3372 is an abutment arm. The abutment arm is provided with an abutment protrusion 33721.

[0179] The box abutment portion 339 includes a first box abutment portion 3391. The first box abutment portion 3391 is initially located between two opposing abutment arms, and the first box abutment portion 3391 is located on the side of the two abutment protrusions near the first partition 3342. The first connector 337 is pushed towards the side near the first partition 3342, and the first insertion portion 3371 is inserted into the first insertion space 33427. The two abutment protrusions move from both sides of the first box abutment portion 3391 to the side of the first box abutment portion 3391 near the first partition 3342, so that the two abutment arms abut against the first box abutment portion 3391.

[0180] The box abutment portion 339 also includes a second box abutment portion 3392. The side of the second box abutment portion 3392 is connected to the second partition 3343. When the first connector 337 is pushed toward the side closer to the first partition 3342, the abutment protrusion 33721 moves from the side of the second box abutment portion 3392 away from the first partition 3342 to the side of the second box abutment portion 3392 closer to the first partition 3342, and the abutment protrusion 33721 abuts against the second box abutment portion 3392.

[0181] The box abutment portion 339 also includes a third box abutment portion 3393. The side of the third box abutment portion 3393 is connected to the third partition 3344. When the first connector 337 is pushed toward the side closer to the first partition 3342, the abutment protrusion 33721 moves from the side of the third box abutment portion 3393 away from the first partition 3342 to the side of the third box abutment portion 3393 closer to the first partition 3342, and the abutment protrusion 33721 abuts against the third box abutment portion 3393.

[0182] In some embodiments, reference Figure 16 The flow guide 34 may include a first flow guide 341 and a second flow guide 342. The first flow guide 341 is connected to the end of the second flow guide 342 away from the atomizing zone 3121. The first flow guide 341 is disposed on the bottom wall of the first water storage tank 33411.

[0183] refer to Figure 18 and Figure 19 The humidifier box 33 includes a flow-limiting portion 3310. The bottom end of the flow-limiting portion 3310 is connected to the bottom wall of the first water storage tank 33411. The flow-limiting portion 3310 is used to limit the first flow-limiting portion 341 in a second direction and / or a third direction, ensuring that the flow-limiting member 34 contacts the atomizing zone 3121. Specifically, the flow-limiting portion 3310 is at least one flow-limiting plate. The bottom end of the flow-limiting plate is connected to the bottom wall of the first water storage tank 33411. The flow-limiting portion defines a placement space 33101 located inside the flow-limiting portion. The top of the placement space 33101 is open. The first flow-limiting portion 341 is inserted into the placement space 33101.

[0184] refer to Figure 18 and Figure 19 The humidifier box 33 includes a flow-guiding support part 3311. The bottom end of the flow-guiding support part 3311 is connected to the bottom wall of the first water storage tank 33411. A second flow-guiding part 342 is disposed on the flow-guiding support part 3311, so that the flow-guiding support part 3311 provides support for the second flow-guiding part 342, facilitating the alignment of the second flow-guiding part 342 with the atomizing area 3121.

[0185] The first partition 3342 is connected to the flow support plate 33428. The second flow section 342 is provided on the flow support plate 33428, so that the flow support plate 33428 provides support for the second flow section 342, making it easier for the second flow section 342 to be aligned with the atomizing zone 3121.

[0186] In some embodiments, reference Figure 13 The humidifier box 33 includes a decorative panel 3312. The decorative panel 3312 is attached to the side of the humidifier box body 334 opposite to the door 2. A spray nozzle 331 is located on the decorative panel 3312. The humidifier box body 334 includes a first side panel 3345, located on the side of the humidifier box body 334 opposite to the door 2. The decorative panel 3312 is connected to the first side panel 3345. Specifically, the decorative panel 3312 and the first side panel 3345 are detachably and fixedly connected. The decorative panel 3312 abuts against the first side panel 3345.

[0187] refer to Figure 15 The first side plate 3345 is provided with a side plate through hole 33451. The side plate through hole 33451 penetrates the first side plate 3345 in a third direction, so that the spray nozzle 331 is connected to the buffer chamber 332.

[0188] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

[0189] For ease of explanation, the above description has been provided in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Various modifications and variations can be obtained based on the above teachings. The selection and description of the above embodiments are for the purpose of better explaining the principles and practical applications, thereby enabling those skilled in the art to better utilize the described embodiments and various different variations of embodiments suitable for specific use considerations.

Claims

1. A refrigerator, characterized in that, include: The box (1) is equipped with a refrigeration chamber; The cabinet door (2) is used to open or close the refrigeration compartment; A humidification module (3) is installed on the housing (1) or the door (2) for humidifying the refrigeration chamber; the humidification module (3) includes an ultrasonic atomizer (31), which includes: A piezoelectric vibrating element (311) is annular and includes two first sides (3111) and two second sides (3112). The two first sides (3111) are spaced apart along a first direction and both extend along a second direction. The two second sides (3112) are spaced apart along the second direction and both extend along the first direction. The two first sides (3111) and the two second sides (3112) are connected to form a fog-passing channel (3113). The fog-passing channel (3113) penetrates the piezoelectric vibrating element (311) in a third direction. The first direction, the second direction, and the third direction are perpendicular to each other. The distance between the two second sides (3112) is greater than the distance between the two first sides (3111). Atomizing plate (312) is connected to the piezoelectric vibration element (311) and forms an annular connecting area (3122). The atomizing plate (312) covers the fog passage (3113) and is located at the end of the fog passage (3113) along the third direction. The atomizing plate (312) is provided with an atomizing area (3121) opposite to the fog passage (3113). The atomizing area (3121) is located inside the connecting area (3122). The atomizing area (3121) is provided with a plurality of atomizing holes (31211) penetrating the atomizing plate (312). The vibration generated by the piezoelectric vibration element (311) is transmitted to the atomization zone (3121), causing the liquid on the surface of the atomization zone (3121) to atomize into mist. The mist is ejected through the atomization hole (31211) and discharged along the mist passage (3113).

2. The refrigerator according to claim 1, characterized in that, The distance between the two first sides (3111) is G1, G1≥4mm and G1≤10mm, and the distance between the two second sides (3112) is G2, G2≥40mm and G2≤70mm.

3. The refrigerator according to claim 1, characterized in that, The distance between the two first sides (3111) is G1, and the distance between the two second sides (3112) is G2, where G2 / G1≥2 and G2 / G1≤20.

4. The refrigerator according to claim 1, characterized in that, The atomizing area (3121) includes a plurality of sub-atomizing areas (31212), which are arranged along the second direction, and adjacent sub-atomizing areas (31212) are connected or spaced apart; The ratio of the sum of the areas of all the atomizing holes (31211) on the surface of the sub-atomizing region (31212) to the surface area of ​​the sub-atomizing region (31212) is the atomizing hole coverage rate; along the second direction, from the center of the atomizing region (3121) to the edge of the atomizing region (3121), two adjacent sub-atomizing regions (31212) are respectively the first sub-atomizing region (M1) and the second sub-atomizing region (M2); The atomization hole coverage rates of the first sub-atomization zone (M1) and the second sub-atomization zone (M2) are respectively a first coverage rate P1 and a second coverage rate P2, where P2>P1 and P1>0.

5. The refrigerator according to claim 1, characterized in that, The atomizing area (3121) includes a plurality of sub-atomizing areas (31212), which are arranged along the second direction, and adjacent sub-atomizing areas (31212) are connected or spaced apart; The ratio of the sum of the areas of all the atomizing holes (31211) on the surface of the sub-atomizing region (31212) to the surface area of ​​the sub-atomizing region (31212) is the atomizing hole coverage rate; along the second direction, from the center of the atomizing region (3121) to the edge of the atomizing region (3121), three adjacent sub-atomizing regions (31212) are respectively the first sub-atomizing region (M1), the second sub-atomizing region (M2) and the third sub-atomizing region (M3); The atomization hole coverage rates of the first sub-atomization zone (M1), the second sub-atomization zone (M2), and the third sub-atomization zone (M3) are respectively a first coverage rate P1, a second coverage rate P2, and a third coverage rate P3, where P3>P2, P2>P1, P1>0, and P3-P2>P2-P1.

6. The refrigerator according to claim 1, characterized in that, The atomizing area (3121) includes a plurality of sub-atomizing areas (31212), which are arranged along the second direction and are connected to each other. The sub-atomizing regions (31212) within the atomizing region (3121) are all equal in size in the second direction, and the diameters of the atomizing holes (31211) within the atomizing region (3121) are all equal. Along the second direction, from the center of the atomizing region (3121) to the edge of the atomizing region (3121), there are N sub-atomizing regions (31212), which are sequentially the first sub-atomizing region (M1) to the Nth sub-atomizing region, where N≥1. The number of atomizing holes (31211) in the Nth atomizing region (3121) is Q=(0.125N(N-1)+1)W, where W is an integer greater than 0 and W is a multiple of 4.

7. The refrigerator according to any one of claims 4-6, characterized in that, The sub-atomizing zone (31212) is provided with multiple rows of atomizing holes (31211), and the multiple rows of atomizing holes (31211) are arranged sequentially at intervals along the second direction; each row of atomizing holes (31211) has multiple atomizing holes (31211); Within the same sub-atomization zone (31212), the spacing between two adjacent columns of atomization holes (31211) is the same, and within each column of atomization holes (31211), the spacing between two adjacent atomization holes (31211) is the same.

8. The refrigerator according to any one of claims 1-6, characterized in that, Also includes: A humidity detection device is used to detect the air humidity S inside the refrigeration room; compressor; The controller is electrically connected to both the humidity detection device and the compressor, and is configured to: Under the condition that the cabinet door (2) is closed and the refrigeration compartment is stopped; When S < the first preset humidity S1, the ultrasonic atomizer (31) is controlled to run intermittently for X cycles. In each cycle, it runs for the first preset time T1 and then stops for the second preset time T2, X > 0. When the first preset humidity S1≤S< the second preset humidity S2, the ultrasonic atomizer (31) is controlled to run intermittently for Y cycles. In each cycle, the first preset time T1 is run first, and then the second preset time T2 is stopped. X / Y>1 and X / Y≤3, Y≥5 and Y≤15; When S≥S2, the ultrasonic atomizer (31) is controlled to stop operating.

9. The refrigerator according to any one of claims 1-6, characterized in that, At least one shelf (4) is installed on the inner wall of the door (2); when the humidifying module (3) is installed on the door (2), the humidifying module (3) is located below one of the shelves (4); The humidification module (3) also includes: The base (32) is connected to the inner wall of the box door (2). The base (32) has a base opening (321) on the side away from the box door (2). The base (32) has an installation cavity (322) that communicates with the base opening (321). The humidifier box (33) is detachably installed in the mounting cavity (322) through the base opening (321); the humidifier box (33) has a spray nozzle (331) on the side away from the box door (2), and a buffer cavity communicating with the spray nozzle (331) is formed inside the humidifier box (33); The ultrasonic atomizer (31) is installed at the end of the buffer chamber away from the spray nozzle (331). The fog passage (3113) is connected to the buffer chamber and faces the spray nozzle (331). The first direction and the second direction are parallel to the height direction and width direction of the door (2), respectively.

10. A refrigerator, characterized in that, include: The box (1) is equipped with a refrigeration chamber; The cabinet door (2) is used to open or close the refrigeration compartment; A humidification module (3) is installed on the housing (1) or the door (2) for humidifying the refrigeration chamber; the humidification module (3) includes an ultrasonic atomizer (31), which includes: The piezoelectric vibrating element (311) is annular and includes two first sides (3111) and two second sides (3112). The two first sides (3111) are spaced apart along a first direction and both extend along a second direction. The two second sides (3112) are spaced apart along the second direction and both extend along the first direction. The two first sides (3111) and the two second sides (3112) are connected to form a fog-passing channel (3113). The fog-passing channel (3113) penetrates the piezoelectric vibrating element (311) in a third direction. The first direction, the second direction, and the third direction are perpendicular to each other. An atomizing plate (312) is connected to the piezoelectric vibration element (311) and forms an annular connecting area (3122). The atomizing plate (312) covers the fog passage (3113) and is located at the end of the fog passage (3113) along the third direction. The atomizing plate (312) is provided with an atomizing area (3121) opposite to the fog passage (3113). The atomizing area (3121) is located inside the connecting area (3122). The atomizing area (3121) is provided with a plurality of atomizing holes (31211) penetrating the atomizing plate (312). The size of the atomizing area (3121) in the first direction is smaller than the size of the atomizing area (3121) in the second direction. The vibration generated by the piezoelectric vibration element (311) is transmitted to the atomization zone (3121), causing the liquid on the surface of the atomization zone (3121) to atomize into mist. The mist is ejected through the atomization hole (31211) and discharged along the mist passage (3113).

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