Refrigerator

Abstract

The utility model relates to the technical field of household appliances, in particular to a refrigerator. The refrigerator comprises a refrigerator body, an evaporator and a fan, a refrigerating chamber and an air duct are arranged in the refrigerator body, and the refrigerating chamber is communicated with the air duct; the evaporator and the fan are both arranged in the box body and are both communicated with the air duct; the fan is used for conveying cold air generated by the evaporator to the refrigerating chamber; a partition plate and a drawer are arranged in the refrigerating chamber, the refrigerating chamber is divided into a refrigerating area and a variable-temperature area by the partition plate, and the variable-temperature area is located below the refrigerating area. The drawer is movably arranged in the variable temperature area in the first direction, and the drawer is provided with an air inlet hole; an air inlet is formed in the bottom of the temperature changing area and communicates with an air outlet of the air channel and the air inlet hole so that cold air sent out of the air outlet of the air channel can sequentially pass through the air inlet and the air inlet hole to enter the drawer. The refrigerator provided by the utility model can improve the freezing condition in the refrigerating chamber.

Description

Technical Field

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

[0002] As an indispensable household appliance in modern homes, the core function of a refrigerator is to preserve and store food through precise temperature control.

[0003] Traditional refrigerators typically include functional zones such as a refrigerator compartment and a freezer compartment. The refrigerator compartment includes a refrigeration zone and a variable temperature zone. Due to its flexibility, the variable temperature zone allows users to adjust the temperature according to their storage needs (such as short-term freezing of meat or preservation of specific fruits and vegetables).

[0004] However, when the temperature in the variable temperature zone is close to or below 0°C, the cold air sent out from the variable temperature zone can easily cause icing in the cold storage area. Summary of the Invention

[0005] This application discloses a refrigerator that can improve the situation of ice buildup in the refrigerator compartment.

[0006] To achieve the above objectives, firstly, this application discloses a refrigerator, comprising:

[0007] The cabinet has a refrigerator compartment and an air duct inside, and the refrigerator compartment is connected to the air duct.

[0008] An evaporator is disposed inside the housing and communicates with the air duct;

[0009] A fan is installed inside the housing and connected to the air duct, used to deliver the cold air generated by the evaporator to the cold storage compartment;

[0010] The cold storage compartment is equipped with:

[0011] A partition divides the refrigerator compartment into a refrigerator zone and a variable temperature zone, with the variable temperature zone located below the refrigerator zone.

[0012] A drawer, which is movably disposed in the temperature-changing zone along a first direction, and the drawer is provided with an air inlet;

[0013] The bottom of the temperature-changing zone is provided with an air inlet, which is connected to the air outlet of the air duct and the air inlet hole respectively, so that the cold air sent out from the air outlet of the air duct can enter the drawer in sequence through the air inlet and the air inlet hole.

[0014] In this application, by placing the air inlet at the bottom of the variable temperature zone, the cold air entering the variable temperature zone can first spread from the bottom of the zone and then slowly rise to the top. During this process, the cold air absorbs heat from the variable temperature zone, and its temperature rises, while the temperature of the variable temperature zone decreases. In other words, the flow path of the cold air in the variable temperature zone is extended, which not only ensures the cooling effect of the variable temperature zone but also reduces the flow of cold air directly entering the refrigeration zone from the air inlet. Therefore, when the cold air spreads from the variable temperature zone to the refrigeration zone to maintain the refrigeration temperature, it can improve the phenomenon of icing in the refrigeration zone, thereby ensuring the refrigeration effect of the refrigeration zone and improving the user experience.

[0015] In one possible implementation, the bottom wall of the drawer is provided with a groove, the groove covers the air inlet, and the air inlet hole is located on the groove wall.

[0016] Because the groove on the bottom wall of the drawer covers the air inlet, and the air inlet is located on the groove wall, when the cold air sent from the air inlet first enters the groove, the speed of the cold air entering the groove will be reduced, and then it will enter the drawer through the air inlet. It can be seen that the groove can slow down the cold air entering the drawer, thereby prolonging the time the cold air stays in the drawer, and further improving the phenomenon of icing in the refrigerator compartment.

[0017] In one possible implementation, the outer bottom wall of the drawer is recessed towards the interior space of the drawer to form the groove, and the inner bottom wall of the drawer forms a protrusion corresponding to the position of the groove;

[0018] The groove wall includes:

[0019] Top wall of the tank:

[0020] The first groove sidewall is connected to the groove top wall;

[0021] The second groove sidewall is connected to the groove top wall and is disposed opposite to the first groove sidewall;

[0022] The air inlet is located on the side wall of the first slot and / or the side wall of the second slot.

[0023] Since the air inlet is located on the side wall of the first slot and / or the side wall of the second slot, the flow direction of the cold air delivered from the air inlet is towards the side wall of the drawer. Compared with setting the air inlet on the top wall of the slot, this extends the movement path of the cold air in the drawer, thereby further ensuring the regulation of the temperature inside the drawer by the cold air delivered from the air inlet, and also improving the phenomenon of icing in the refrigerator compartment.

[0024] In one possible implementation, the air inlet includes a plurality of air inlets, which are symmetrically arranged on the sidewalls of the first groove and the second groove.

[0025] Since multiple air inlets are symmetrically arranged on the side walls of the first and second slots, on the one hand, the uniformity of cold air entering the drawer can be improved, thereby enhancing the temperature regulation effect of the cold air inside the drawer. On the other hand, the residence time of cold air near the bottom wall of the drawer can be extended, further improving the phenomenon of icing in the refrigeration area.

[0026] In one possible implementation, a plurality of the air inlets are disposed near the top wall of the slot.

[0027] Because multiple air inlets are located close to the top wall of the drawer, the cold air delivered from the air inlet first spreads at the opening of the groove, and then slowly rises to the top wall of the groove. During the process of rising to the top wall of the groove, the cold air will enter the drawer through multiple air inlets. It can be seen that the speed of the cold air is reduced to the maximum extent before entering the drawer, thereby increasing the residence time of the cold air in the drawer.

[0028] In one possible implementation, the sum of the cross-sectional areas of the plurality of air inlets is greater than the area of ​​the air inlet.

[0029] Since the total cross-sectional area of ​​the multiple air inlets is greater than the area of ​​the air inlet, the cold air delivered from the air inlet can further reduce the airflow velocity as it passes through the multiple air inlets. This prevents the cold air from rushing to the top of the drawer all at once, thus further improving the icing phenomenon in the refrigerator compartment.

[0030] In one possible implementation, a plurality of the air inlets are spaced apart along the extending direction of the groove, the extending direction of the groove being perpendicular to the first direction;

[0031] The drawer includes:

[0032] First sidewall;

[0033] The second sidewall and the first sidewall are arranged at intervals along a direction perpendicular to the first direction, and the air inlet is located close to the first sidewall;

[0034] The distance between the first sidewall and the second sidewall decreases in the direction from the first sidewall to the second sidewall.

[0035] Since multiple air inlets are spaced apart along the extension direction of the groove, and the air inlets are located close to the first sidewall, the pressure of the cold air near the first sidewall is higher, while the pressure of the cold air far from the first sidewall, i.e., near the second sidewall, is lower. Therefore, in order to ensure that the pressure of the cold air entering each air inlet is nearly uniform, the distance between the first and second groove sidewalls decreases from the first sidewall to the second sidewall. In this way, the pressure of the cold air in the groove is nearly uniform, and the pressure entering each air inlet is also nearly uniform, thus ensuring the uniformity of the cold air entering the drawer.

[0036] In one possible implementation, the groove further includes:

[0037] The third groove sidewall is connected to the first groove sidewall and the second groove sidewall respectively. The third groove sidewall is opposite to the second sidewall and there is a gap between them. The first groove sidewall and the second groove sidewall are also connected to the first sidewall respectively.

[0038] As can be seen from the above, the air inlet is located close to the first side wall, so that the first groove side wall and the second groove side wall are respectively connected to the first side wall, so that all the cold air sent out from the air inlet can enter the groove.

[0039] Furthermore, since the third groove sidewall is opposite to the second sidewall and there is a gap between them, the cold air entering the groove can enter the drawer through the air inlet as much as possible, thereby reducing the flow of cold air between the second sidewall of the drawer and the sidewall of the temperature-changing zone.

[0040] In one possible implementation, the refrigerator further includes:

[0041] A temperature detector is located in the variable temperature zone, and the temperature detector is used to detect the temperature in the variable temperature zone;

[0042] A control valve is provided at the air inlet and connected to the temperature detector, which can control the size of the air inlet according to the temperature in the variable temperature zone detected by the temperature detector.

[0043] Therefore, the control valve can control the size of the air inlet according to the different temperatures in the variable temperature zone detected by the temperature detector, thereby achieving temperature controllability in the variable temperature zone and avoiding the phenomenon of icing in the refrigeration zone due to excessively low temperature in the variable temperature zone.

[0044] In one possible implementation, the temperature detector is positioned at the top of the variable temperature zone.

[0045] Because the temperature detector is located at the top of the variable temperature zone, it can detect the average temperature within the zone. This improves the accuracy of the average temperature detection compared to a temperature detector located at the bottom of the zone.

[0046] Compared with the prior art, the beneficial effects of this application are as follows:

[0047] In this application, by placing the air inlet at the bottom of the variable temperature zone, the cold air entering the variable temperature zone can first spread from the bottom of the zone and then slowly rise to the top. During this process, the cold air absorbs heat from the variable temperature zone, and its temperature rises, while the temperature of the variable temperature zone decreases. In other words, the flow path of the cold air in the variable temperature zone is extended, which not only ensures the cooling effect of the variable temperature zone but also reduces the flow of cold air directly entering the refrigeration zone from the air inlet. Therefore, when the cold air spreads from the variable temperature zone to the refrigeration zone to maintain the refrigeration temperature, it can improve the phenomenon of icing in the refrigeration zone, thereby ensuring the refrigeration effect of the refrigeration zone and improving the user experience. Attached Figure Description

[0048] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0049] Figure 1 This is a schematic diagram of the structure of the refrigerator provided in the embodiment of this application;

[0050] Figure 2 This is a side view of the refrigerator compartment provided in an embodiment of this application;

[0051] Figure 3 yes Figure 2 The variable temperature zone inside features a drawer (side view).

[0052] Figure 4 This is a structural schematic diagram of a drawer provided in one embodiment of this application;

[0053] Figure 5 This is a structural schematic diagram of the drawer provided in an embodiment of this application from another perspective;

[0054] Figure 6 This is a structural schematic diagram of the drawer provided in the embodiments of this application from a third perspective;

[0055] Figure 7 yes Figure 6 Cross-sectional view at point AA;

[0056] Figure 8 This is a top view of the drawer provided in an embodiment of this application;

[0057] Figure 9 This is a structural schematic diagram of the drawer provided in the embodiments of this application from a fourth perspective;

[0058] Figure 10 This is a front view of the refrigerator compartment provided in the embodiment of this application.

[0059] Explanation of main figure symbols

[0060] 100 - Refrigerator;

[0061] 110 - Refrigerator compartment; 111 - Shelf; 112 - Drawer; 1121 - Air inlet; 1122 - Recess; 11221 - Top wall of the recess; 11222 - Side wall of the first recess; 11223 - Side wall of the second recess; 11224 - Side wall of the third recess; 1123 - Protrusion; 112a - First side wall; 112b - Second side wall; 110a - Refrigeration area; 110b - Variable temperature area; 110b1 - Air inlet;

[0062] 120-Freezer compartment;

[0063] 130 - Enclosure;

[0064] 140 - Temperature detector. Detailed Implementation

[0065] 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.

[0066] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0067] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0068] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0069] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0070] Before explaining the technical solution of this application, the background technology of this application shall be explained first.

[0071] Traditional refrigerators typically include functional zones such as a refrigerator compartment and a freezer compartment. The refrigerator compartment includes a refrigeration zone and a variable temperature zone. Due to its flexibility, the variable temperature zone allows users to adjust the temperature according to their storage needs (such as short-term freezing of meat or preservation of specific fruits and vegetables).

[0072] However, when the temperature in the variable temperature zone is close to or below 0°C, the cold air sent out from the variable temperature zone can easily cause ice to form in the refrigeration compartment. Based on this, this application provides a refrigerator to solve the above problem.

[0073] The technical solution of this application will be described below with reference to specific embodiments and accompanying drawings.

[0074] See Figure 1 This application provides a refrigerator 100, which is equipped with a refrigeration system and an air duct system. The refrigeration system is used to generate cold air, and the air duct system can transport the cold air generated by the refrigeration system to the refrigerator compartment 110 and the freezer compartment 120 of the refrigerator 100 to achieve the purpose of refrigeration in the refrigerator compartment 110 and freezing in the freezer compartment 120.

[0075] A refrigeration system typically refers to a closed system consisting of components such as a compressor, evaporator, condenser, dryer filter, return pipe, and throttling device, as well as refrigerant. Each component is distributed in different locations in the refrigerator according to its structural characteristics to meet the requirements of its corresponding function.

[0076] The working process of a refrigeration system mainly includes compression, condensation, throttling, and evaporation. The compression process is as follows: After the refrigerator is plugged in, with the thermostat contacts closed, the compressor starts working. Low-temperature, low-pressure refrigerant from the evaporator is drawn into the compressor and compressed into high-temperature, high-pressure refrigerant gas, which is then discharged into the condenser. The condensation process is as follows: The high-temperature, high-pressure refrigerant gas exchanges heat with the external environment through the condenser, its temperature decreases, and it is gradually cooled into room-temperature, high-pressure saturated refrigerant vapor, and then further cooled into saturated refrigerant liquid. The throttling process is as follows: The condensed saturated refrigerant liquid is filtered through a dryer to remove moisture and impurities before flowing into a throttling device. This device reduces the pressure, turning the refrigerant into room-temperature, low-pressure wet vapor. The evaporation process is as follows: The room-temperature, low-pressure wet vapor enters the evaporator, absorbs heat, and vaporizes, lowering the temperature of the evaporator and its surroundings, thus achieving refrigeration and turning the refrigerant into a low-temperature, low-pressure gas. The refrigerant that comes out of the evaporator returns to the compressor and repeats the above process. Energy is converted through the change in the state of the refrigerant, and the heat inside the refrigerator is transferred to the air outside the refrigerator, thus realizing the refrigeration cycle of the refrigerator.

[0077] The air duct system is installed inside the refrigerator 100 to provide power for the flow of cold air. The air duct system generally includes a fan and air ducts. The following mainly uses the refrigerator compartment 110 to achieve the purpose of refrigeration as an example to illustrate the working process of the air duct system.

[0078] In some embodiments, the air inlet of the duct is located close to the fan, and the air outlet of the duct is located away from the fan; in other embodiments, the air outlet of the duct is located close to the fan, and the air inlet of the duct is located away from the fan. The fan drives the air in the duct, and the evaporator is correspondingly installed in the duct. The cold air cooled by the evaporator flows along the duct through the fan's drive component and enters the refrigerator compartment to perform a cooling operation on the refrigerator compartment 110.

[0079] In one possible embodiment, see Figure 1 The refrigerator 100 includes a cabinet 130, which has a refrigerator compartment 110 and an air duct inside. The refrigerator compartment 110 is connected to the air duct.

[0080] Since the air duct is connected to the refrigerator compartment 110, the cold air in the air duct can be transported into the refrigerator compartment 110, thereby reducing the temperature inside the refrigerator compartment 110 and achieving the purpose of refrigeration.

[0081] In addition, the aforementioned cabinet 130 includes, but is not limited to, single-door cabinet 130, double-door cabinet 130, etc.

[0082] In some possible embodiments, the refrigerator 100 further includes an evaporator and a fan. The evaporator is disposed inside the cabinet 130 and communicates with the air duct. The fan is disposed inside the cabinet 130 and communicates with the air duct, and is used to deliver the cold air generated by the evaporator to the refrigerator compartment 110.

[0083] The evaporator is a component of the refrigeration system, while the fan is a component of the air duct system. Optionally, the fan is located inside the air duct or near the evaporator. The fan can circulate the cold air generated by the evaporator to various compartments of the refrigerator 100, such as the refrigerator compartment 110 and the freezer compartment 120.

[0084] In some possible embodiments, see Figure 2 The refrigerator compartment 110 is provided with a partition 111 and a drawer 112. The partition 111 divides the refrigerator compartment 110 into a refrigerator zone 110a and a variable temperature zone 110b. The variable temperature zone 110b is located below the refrigerator zone 110a. The drawer 112 is movably disposed in the variable temperature zone 110b along a first direction. The drawer 112 is provided with an air inlet 1121.

[0085] Optionally, the temperature range of the cold storage zone 110a is 2℃~8℃, which is mainly used for short-term food storage to prolong the spoilage process.

[0086] Optionally, the temperature range of the variable temperature zone 110b is -4℃ to 10℃. Users can adjust the temperature according to their needs to achieve various storage methods, such as micro-freezing mode storage, refrigeration mode storage, and soft-freezing mode storage.

[0087] It should be noted that the first direction refers to Figure 2 The direction indicated by the X arrow is the direction in which drawer 112 is pulled out.

[0088] The drawer 112 is movably disposed within the temperature-changing zone 110b along the first direction. On the one hand, it facilitates the retrieval and placement of items within the temperature-changing zone 110b. On the other hand, the drawer 112 can close the opening of the temperature-changing zone 110b, reducing the amount of cold air entering the refrigeration zone 110a, thereby reducing the impact of temperature changes within the temperature-changing zone 110b on the refrigeration zone 110a.

[0089] In addition, by providing an air inlet 1121 on the drawer 112, cold air delivered from the air inlet 110b1 located in the variable temperature zone 110b can enter the drawer 112 to regulate the temperature inside the drawer 112.

[0090] Although the partition 111 can divide the refrigerator compartment 110 into a refrigerator zone 110a and a variable temperature zone 110b, and the drawer 112 is movable in the variable temperature zone 110b in the first direction, in other words, the partition 111 and the drawer 112 can isolate the variable temperature zone 110b and the refrigerator zone 110a, they cannot completely isolate the variable temperature zone 110b and the refrigerator zone 110a. Therefore, when the temperature in the variable temperature zone 110b decreases, when the cold air in the variable temperature zone 110b enters the refrigerator zone 110a, it is easy for the refrigerator zone 110a to freeze.

[0091] Based on this, in some possible embodiments, see Figure 2 and Figure 3 The bottom of the temperature-controlled zone 110b is provided with an air inlet 110b1, which is connected to the air outlet and air inlet 1121 of the air duct, so that the cold air sent out from the air outlet of the air duct can enter the drawer 112 in sequence through the air inlet 110b1 and the air inlet 1121.

[0092] The bottom of the variable temperature zone 110b refers to the height direction of the refrigerator 100 (i.e., Figure 2 The bottom of the variable temperature zone 110b (in the direction indicated by the Y arrow) is also the bottom of the refrigerator compartment 110.

[0093] In this embodiment, by placing the air inlet 110b1 at the bottom of the variable temperature zone 110b, the cold air entering the variable temperature zone 110b can first spread from the bottom of the variable temperature zone 110b and then slowly rise to the top of the variable temperature zone 110b. During this process, the cold air has absorbed the heat in the variable temperature zone 110b, and the temperature of the cold air has also increased, while the temperature of the variable temperature zone 110b has decreased. In other words, the flow path of the cold air in the variable temperature zone 110b is extended, which can not only ensure the cooling effect of the variable temperature zone 110b, but also reduce the flow of cold air delivered from the air inlet 110b1 directly into the refrigeration zone 110a. Therefore, when the cold air spreads from the variable temperature zone 110b to the refrigeration zone 110a to maintain the refrigeration temperature of the refrigeration zone 110a, it can improve the phenomenon of refrigeration icing in the refrigeration zone 110a, thereby ensuring the refrigeration effect of the refrigeration zone 110a and improving the user experience.

[0094] In some possible embodiments, see Figure 3 and Figure 4 The bottom wall of drawer 112 is provided with a groove 1122, which covers the air inlet 110b1, and the air inlet 1121 is located on the groove wall of the groove 1122.

[0095] Since the groove 1122 on the bottom wall of drawer 112 covers the air inlet 110b1, and the air inlet 1121 is located on the groove wall of the groove 1122, when the cold air sent from the air inlet 110b1 first enters the groove 1122, the speed of the cold air entering the groove 1122 will be reduced, and then it will enter the drawer 112 through the air inlet 1121. It can be seen that the groove 1122 can reduce the speed of the cold air entering the drawer 112, thereby prolonging the time of the cold air entering the drawer 112, and thus prolonging the time of the cold air staying in the drawer 112, further improving the phenomenon of refrigeration icing in the refrigeration area 110a.

[0096] Furthermore, there are various structures for providing a groove 1122 on the bottom wall of drawer 112. See some possible embodiments for details. Figure 4 and Figure 5 The outer bottom wall of drawer 112 is recessed towards the interior space of drawer 112 to form a groove 1122, and the inner bottom wall of drawer 112 forms a protrusion 1123 corresponding to the position of the groove 1122.

[0097] By recessing the outer bottom wall of drawer 112 toward the interior space of drawer 112 to form a groove 1122, the number of assembly parts of drawer 112 can be reduced.

[0098] In some other possible embodiments, a plurality of protrusions are formed on the bottom wall of drawer 112 extending away from the interior space of drawer 112, and the plurality of protrusions sequentially surround to form a groove 1122, thereby ensuring the flatness of the bottom wall of drawer 112.

[0099] The above describes two ways of forming the groove 1122. The following mainly uses the groove 1122 formed by the recess in the outer bottom wall of the drawer 112 toward the internal space of the drawer 112 as an example for illustration.

[0100] In some possible embodiments, see Figure 5 and Figure 6 The groove wall of the groove 1122 includes a groove top wall 11221, a first groove side wall 11222, and a second groove side wall 11223. The first groove side wall 11222 is connected to the groove top wall 11221; the second groove side wall 11223 is connected to the groove top wall 11221 and is disposed opposite to the first groove side wall 11222; the air inlet 1121 is located on the first groove side wall 11222 and / or the second groove side wall 11223.

[0101] The air inlet 1121 is located on the first groove sidewall 11222 and / or the second groove sidewall 11223. It should be understood that the air inlet 1121 is provided on the first groove sidewall 11222, or the air inlet 1121 is provided on the second groove sidewall 11223, or the air inlet 1121 is provided on both the first groove sidewall 11222 and the second groove sidewall 11223.

[0102] Since the air inlet 1121 is located on the side wall 11222 of the first slot and / or the side wall 11223 of the second slot, the flow direction of the cold air delivered from the air inlet 1121 is towards the side wall of the drawer 112. Compared with setting the air inlet 1121 on the top wall 11221 of the slot, the movement path of the cold air in the drawer 112 is extended, thereby further ensuring the regulation of the temperature in the drawer 112 by the cold air delivered from the air inlet 1121, and also improving the phenomenon of refrigeration icing in the refrigeration area 110a.

[0103] In some possible embodiments, see Figure 5 and Figure 6 The air inlet 1121 includes multiple air inlets 1121, which are symmetrically arranged on the side wall 11222 of the first groove and the side wall 11223 of the second groove.

[0104] It should be noted that "multiple" as mentioned above refers to two or more quantities, such as 8, 10, or 12 air intake holes 1121. Of course, the examples of the number of air intake holes 1121 mentioned above should not be construed as limiting the number of air intake holes 1121, as those skilled in the art should understand.

[0105] Since multiple air inlets 1121 are symmetrically arranged on the side wall 11222 of the first slot and the side wall 11223 of the second slot, on the one hand, the uniformity of cold air entering the drawer 112 can be improved, thereby improving the temperature regulation effect of cold air on the drawer 112. On the other hand, the residence time of cold air near the bottom wall of the drawer 112 can be extended, further improving the phenomenon of icing in the refrigeration area 110a.

[0106] In some possible embodiments, see Figure 6 Multiple air inlets 1121 are set near the top wall 11221 of the tank.

[0107] Since multiple air inlets 1121 are located close to the top wall of the slot, the cold air delivered by the air inlet 110b1 first spreads at the opening of the groove 1122, and then slowly rises to the top wall 11221. During the process of rising to the top wall 11221, the cold air will enter the drawer 112 through the multiple air inlets 1121. It can be seen that the speed of the cold air is reduced to the maximum extent before entering the drawer 112, thereby increasing the residence time of the cold air in the drawer 112.

[0108] In some possible embodiments, the sum of the cross-sectional areas of the plurality of air inlets 1121 is greater than the area of ​​the air inlet 110b1.

[0109] The cross-sectional area of ​​the aforementioned multiple air inlets 1121 refers to the area of ​​the cross section perpendicular to the axial direction of the air inlet 1121.

[0110] Since the total cross-sectional area of ​​the multiple air inlets 1121 is greater than the area of ​​the air inlet 110b1, the cold air delivered from the air inlet 110b1 can further reduce the airflow velocity when passing through the multiple air inlets 1121, so that the cold air passing through the multiple air inlets 1121 will not rush to the top of the drawer 112 all at once, thus further improving the icing phenomenon in the refrigeration area 110a.

[0111] In some possible embodiments, see Figure 4 , Figure 6 , Figure 7 and Figure 8 Multiple air inlets 1121 are spaced apart along the extension direction of the groove 1122, which is perpendicular to the first direction. The drawer 112 includes a first sidewall 112a and a second sidewall 112b. The second sidewall 112b and the first sidewall 112a are spaced apart along the direction perpendicular to the first direction. The air inlet 110b1 is located close to the first sidewall 112a. The distance between the first groove sidewall 11222 and the second groove sidewall 11223 decreases from the first sidewall 112a to the second sidewall 112b.

[0112] Wherein, the extending direction of the aforementioned groove 1122 refers to Figure 6 The direction indicated by the Z-arrow, the direction from the first sidewall 112a to the second sidewall 112b, refers to... Figure 6 The distance between the first groove sidewall 11222 and the second groove sidewall 11223, as indicated by the X arrow, is... Figure 8 The distance represented by 'a' in the figure.

[0113] Since multiple air inlets 1121 are spaced apart along the extension direction of the groove 1122, and the air inlet 110b1 is located close to the first sidewall 112a, the pressure of the cold air near the first sidewall 112a is higher, while the pressure of the cold air far from the first sidewall 112a, i.e., near the second sidewall 112b, is lower. Therefore, in order to ensure that the pressure of the cold air entering each air inlet 1121 is nearly uniform, the distance between the first groove sidewall 11222 and the second groove sidewall 11223 decreases in the direction from the first sidewall 112a to the second sidewall 112b. In this way, the pressure of the cold air in the groove 1122 is nearly uniform, and the pressure entering each air inlet 1121 is also nearly uniform, thereby ensuring the uniformity of the cold air entering the drawer 112.

[0114] In some possible embodiments, Figure 8 and Figure 9 The groove 1122 also includes a third groove sidewall 11224, which is connected to the first groove sidewall 11222 and the second groove sidewall 11223 respectively. The third groove sidewall 11224 is opposite to the second sidewall 112b and there is a gap between them. The first groove sidewall 11222 and the second groove sidewall 11223 are also connected to the first sidewall 112a respectively.

[0115] As can be seen from the above, the air inlet 110b1 is located close to the first side wall 112a. Therefore, the first groove side wall 11222 and the second groove side wall 11223 are also connected to the first side wall 112a, so that the cold air sent out from the air inlet 110b1 can all enter the groove 1122.

[0116] Furthermore, since the third groove sidewall 11224 is opposite to the second sidewall 112b and there is a gap between them, the cold air entering the groove 1122 can enter the drawer 112 through the air inlet 1121 as much as possible, thereby reducing the flow of cold air between the second sidewall 112b of the drawer 112 and the sidewall of the temperature-changing zone 110b.

[0117] In some possible embodiments, see Figure 10 The refrigerator 100 also includes a temperature detector 140 and a control valve. The temperature detector 140 is located in the variable temperature zone 110b and is used to detect the temperature in the variable temperature zone 110b. The control valve is located in the air inlet 110b1 and is connected to the temperature detector 140. It can control the size of the air inlet 110b1 according to the temperature in the variable temperature zone 110b detected by the temperature detector 140.

[0118] Therefore, the control valve can control the size of the air inlet 110b1 according to the different temperatures in the variable temperature zone 110b detected by the temperature detector 140, thereby achieving temperature controllability in the variable temperature zone 110b and avoiding the phenomenon of refrigeration icing in the refrigeration zone 110a due to the temperature of the variable temperature zone 110b being too low.

[0119] It should be noted that the temperature detector 140 detects the average temperature within the variable temperature zone 110b, which is also the average temperature within the drawer 112.

[0120] In addition, specifically, the size of the air inlet 110b1 is controlled based on the preset temperature set in the variable temperature zone 110b. That is, the control valve can compare the average temperature in the variable temperature zone 110b detected by the temperature detector 140 with the preset temperature. If the average temperature in the variable temperature zone 110b is higher than the preset temperature, the air inlet 110b1 should be enlarged; if it is lower than the preset temperature, the air inlet 110b1 should be reduced, thereby regulating and maintaining the temperature in the variable temperature zone 110b.

[0121] Optionally, preset temperatures include 2℃≤L≤3℃, 1℃≤L≤3℃, 0.5℃≤L≤2℃, -0.5℃≤L≤1℃, and -0.5℃≤L≤0℃.

[0122] When the preset temperature is 2℃≤L≤3℃, if the temperature detector 140 detects that the temperature in the variable temperature zone 110b is greater than 3℃, the control valve can control the air inlet 110b1 to be fully opened to reduce the temperature of the variable temperature zone 110b. If the temperature detector 140 detects that the temperature in the variable temperature zone 110b is less than 2℃, the control valve can control the air inlet 110b1 to be opened three-quarters to reduce the temperature of the variable temperature zone 110b more quickly.

[0123] When the preset temperature is 1℃≤L≤3℃, if the temperature detector 140 detects that the temperature in the variable temperature zone 110b is greater than 3℃, the control valve will still control the air inlet 110b1 to be fully open in order to quickly reduce the temperature of the variable temperature zone 110b. If the temperature detector 140 detects that the temperature in the variable temperature zone 110b is less than 1℃, the control valve can control the air inlet 110b1 to be opened halfway in order to slowly reduce the temperature of the variable temperature zone 110b or maintain the temperature of the variable temperature zone 110b.

[0124] When the preset temperature is 0.5℃≤L≤2℃, if the temperature detector 140 detects that the temperature in the variable temperature zone 110b is less than 0.5℃, the control valve can control the air inlet 110b1 to open one-quarter to maintain the temperature of the variable temperature zone 110b. If the temperature detector 140 detects that the temperature in the variable temperature zone 110b is greater than 2℃, the control valve can control the air inlet 110b1 to open three-quarters to slowly reduce the temperature of the variable temperature zone 110b or maintain the temperature of the variable temperature zone 110b.

[0125] When the preset temperature is -0.5℃≤L≤1℃, if the temperature detector 140 detects that the temperature in the variable temperature zone 110b is less than -0.5℃, the control valve needs to control the air inlet 110b1 to be fully closed to avoid the temperature of the variable temperature zone 110b being too low. If the temperature detector 140 detects that the temperature in the variable temperature zone 110b is greater than 1℃, the control valve can control the air inlet 110b1 to be opened halfway to slowly reduce the temperature of the variable temperature zone 110b or maintain the temperature of the variable temperature zone 110b.

[0126] When the preset temperature is -0.5℃≤L≤0℃, if the temperature detector 140 detects that the temperature in the variable temperature zone 110b is greater than 0℃, the control valve can control the air inlet 110b1 to open one-quarter to maintain the temperature of the variable temperature zone 110b.

[0127] In some possible embodiments, see Figure 10 Temperature detector 140 is located at the top of temperature-variable zone 110b.

[0128] Since the temperature detector 140 is located at the top of the variable temperature zone 110b, it can detect the average temperature within the variable temperature zone 110b. Compared to the temperature detector 140 being located at the bottom of the variable temperature zone 110b, this improves the accuracy of the average temperature detected by the temperature detector 140 within the variable temperature zone 110b.

[0129] 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.

Claims

1. A refrigerator (100), characterized in that, The application relates to a refrigerator, which comprises: a box (130) provided with a refrigeration chamber (110) and an air duct, the refrigeration chamber (110) being communicated with the air duct; an evaporator arranged in the box (130) and communicated with the air duct; a fan arranged in the box (130) and communicated with the air duct, the fan being used for conveying cold air generated by the evaporator to the refrigeration chamber (110); the refrigeration chamber (110) is provided with: a partition plate (111) for dividing the refrigeration chamber (110) into a refrigeration area (110a) and a temperature-variable area (110b), the temperature-variable area (110b) being arranged below the refrigeration area (110a); a drawer (112) movably arranged in the temperature-variable area (110b) along a first direction, the drawer (112) being provided with air inlets (1121); a bottom of the temperature-variable area (110b) is provided with an air inlet (110b1), the air inlet (110b1) being communicated with an air outlet of the air duct and the air inlets (1121) respectively, so that cold air sent out from the air outlet of the air duct can enter the drawer (112) through the air inlet (110b1) and the air inlets (1121) in sequence.

2. The refrigerator (100) according to claim 1, characterized in that, A bottom wall of the drawer (112) is provided with a groove (1122), the groove (1122) covers the air inlet (110b1), and the air inlets (1121) are arranged on groove walls of the groove (1122).

3. The refrigerator (100) according to claim 2, characterized in that, An outer bottom wall of the drawer (112) is recessed to form the groove (1122) towards an inner space of the drawer (112), and an inner bottom wall of the drawer (112) is provided with a protrusion (1123) corresponding to the position of the groove (1122). The groove (1122) comprises: a groove top wall (11221); a first groove side wall (11222) connected with the groove top wall (11221); a second groove side wall (11223) connected with the groove top wall (11221) and arranged opposite to the first groove side wall (11222); the air inlets (1121) are arranged on the first groove side wall (11222) and / or the second groove side wall (11223).

4. The refrigerator (100) according to claim 3, characterized in that, The air inlets (1121) are symmetrically arranged on the first groove side wall (11222) and the second groove side wall (11223).

5. The refrigerator (100) according to claim 4, characterized in that, The air inlets (1121) are arranged close to the groove top wall (11221).

6. The refrigerator (100) according to claim 4, characterized in that, The total cross-sectional area of the air inlets (1121) is greater than the area of the air inlet (110b1).

7. The refrigerator (100) according to claim 4, characterized in that, The air inlets (1121) are arranged at intervals along the extension direction of the groove (1122), and the extension direction of the groove (1122) is perpendicular to the first direction. The drawer (112) comprises: a first side wall (112a); A second side wall (112b) is arranged along the first direction and spaced apart from the first side wall (112a), and the air inlet (110b1) is arranged close to the first side wall (112a); The distance between the first groove side wall (11222) and the second groove side wall (11223) decreases along the first side wall (112a) in the direction pointing to the second side wall (112b).

8. The refrigerator (100) according to claim 7, characterized in that, The groove (1122) further comprises: A third groove side wall (11224) is connected to the first groove side wall (11222) and the second groove side wall (11223) respectively, and the third groove side wall (11224) is opposite to the second side wall (112b) with a gap therebetween, and the first groove side wall (11222) and the second groove side wall (11223) are further connected to the first side wall (112a) respectively.

9. The refrigerator (100) according to any one of claims 1 to 8, characterized in that The refrigerator (100) further comprises: A temperature detector (140) is arranged in the temperature-variable zone (110b), and the temperature detector (140) is used to detect the temperature in the temperature-variable zone (110b); A control valve is arranged in the air inlet (110b1) and connected to the temperature detector (140), and the size of the air inlet (110b1) can be controlled according to the temperature in the temperature-variable zone (110b) detected by the temperature detector (140).

10. The refrigerator (100) according to claim 9, characterized in that, The temperature detector (140) is arranged at the top of the temperature-variable zone (110b).

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