Refrigerator

Abstract

The utility model relates to the field of refrigeration equipment, and discloses a refrigerator which comprises a refrigerator body, an inner container, a door body, a cover plate and an evaporator, the inner container is installed in the refrigerator body and provided with a containing cavity with an opening in the front side, the door body is arranged in the containing cavity in a covering mode, an air channel is defined between the cover plate and the inner container, and the evaporator is installed in the inner container and located in the air channel. The inner container is provided with a first flow limiting part protruding towards the air channel, the first flow limiting part is inserted into a gap in the side face of the evaporator, the cover plate is provided with a second flow limiting part protruding towards the air channel, and the second flow limiting part is attached to the front side of the evaporator. The utility model has the beneficial effects that under the condition that the mold investment and the part cost are not increased, the air outlet channels on the two sides and in the front of the evaporator are blocked, and return air can only pass through the evaporator, so that the refrigeration efficiency of a product is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration equipment, in particular to a refrigerator. Background Art

[0002] A frost-free refrigerator is a refrigerator that uses forced circulation of cold air for refrigeration, also known as an indirect cooling (air-cooling) refrigerator. The evaporator of a frost-free refrigerator uses a small fan to force air convection in the box to achieve the purpose of cooling, so we cannot see the frost it produces. However, when this type of refrigerator is used, due to the loose installation structure, some air will not flow through the evaporator, resulting in a poor refrigeration effect. Therefore, a refrigerator is urgently needed to solve the above problem. Utility Model Content

[0003] The purpose of the present application is to provide a refrigerator to achieve the purpose of enhancing the refrigeration effect of the refrigerator.

[0004] The purpose of this application is achieved through the following technical solutions:

[0005] A refrigerator, comprising:

[0006] Box;

[0007] An inner liner, the inner liner is installed in the box body, and the inner liner is provided with a containing cavity with a front opening;

[0008] A door body, wherein the door body cover is arranged on the accommodating cavity;

[0009] a cover plate, wherein an air duct is defined between the cover plate and the inner container; and

[0010] an evaporator, the evaporator being mounted on the inner tank and located in the air duct, and being used for cooling the air in the air duct;

[0011] The inner tank is provided with a first flow limiting portion protruding toward the air duct, the first flow limiting portion is inserted into the gap on the side of the evaporator, and the cover plate is provided with a second flow limiting portion protruding toward the air duct, and the second flow limiting portion is attached to the front side of the evaporator.

[0012] In some embodiments of the present application, the evaporator includes an evaporating tube and fins, the evaporating tube and the fins are both installed on the inner tank, and the fins are installed on the evaporating tube, and the extension direction of the fins forms an installation angle with the extension direction of the evaporating tube, and the installation angle is greater than 0° and less than 180°.

[0013] In some embodiments of the present application, the evaporator tube includes a straight segment and a bent segment, the straight segments are arranged in the air duct at intervals from top to bottom, the bent segments connect adjacent straight segments and are located on the left and right sides of the straight segments, and the first flow limiting portion is provided between at least one adjacent bent segment on the same side.

[0014] In some embodiments of the present application, the first flow limiting portion is provided on both the left and right sides of the inner container, and the first flow limiting portion is respectively provided between the adjacent bending sections on the left side and between the adjacent bending sections on the right side.

[0015] In some embodiments of the present application, there are multiple fins, and the multiple fins are installed on the straight line segment in sequence from top to bottom, and the multiple fins are installed on the straight line segment at intervals from left to right to form a fin structure arranged in an array.

[0016] In some embodiments of the present application, the straight line segment is horizontally arranged in the air duct, the fins are vertically arranged in the air duct, and the return air direction of the air duct is from bottom to top.

[0017] In some embodiments of the present application, the fins are installed on the straight line segment at uniform intervals from left to right, and the lateral interval of the fins located on the upper side is smaller than the lateral interval of the fins located on the lower side.

[0018] In some embodiments of the present application, the inner tank is provided with a clamping claw, the clamping claw is installed on the rear inner wall of the inner tank, and the evaporating tube is installed on the clamping claw for fixing the evaporating tube.

[0019] In some embodiments of the present application, the thickness of the first flow limiting portion is 10 mm-20 mm, and the thickness of the second flow limiting portion is 1 mm-3 mm.

[0020] A refrigerator, comprising:

[0021] Box;

[0022] An inner liner, the inner liner is installed in the box body, and the inner liner is provided with a containing cavity with a front opening;

[0023] A door body, wherein the door body cover is arranged on the accommodating cavity;

[0024] a cover plate, wherein an air duct is defined between the cover plate and the inner container; and

[0025] an evaporator, the evaporator being mounted on the inner tank and located in the air duct, and being used for cooling the air in the air duct;

[0026] The inner tank is provided with a first flow limiting portion protruding toward the air duct, and the first flow limiting portion is inserted into the gap on the side of the evaporator.

[0027] The refrigerator of the present application has an opening on the front side of the box body and an inner tank is installed therein. The inner tank has a accommodating cavity and forms a closed space by closing the door body for storing items that need to be refrigerated or frozen. In order to achieve the refrigeration or freezing effect of the inner tank, cold air needs to be blown into the inner tank. Therefore, a cover plate and an evaporator can be arranged in the inner tank, wherein the cover plate can cooperate with the inner wall of the inner tank to form an air duct for air circulation, and the evaporator can cool the air entering the air duct, thereby realizing the function of cooling the air. The evaporation tube of the evaporator will inevitably form a gap on the side when installed, and the first flow limiting part extends into the gap on the side of the evaporator. In the process of air flowing through the evaporator, the air can be guided to the position where the fins are in the middle of the evaporation tube, and the refrigeration effect becomes stronger. The remaining gap between the cover plate and the evaporator is blocked by the second flow limiting part, thereby further guiding the air to the position where the cooling effect of the evaporator is good, thereby achieving the purpose of blocking the air outlet channels on both sides and the front of the evaporator without increasing the mold investment and parts cost, and the return air can only pass through the evaporator, thereby improving the refrigeration efficiency of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic diagram of the appearance of the refrigerator of the present application;

[0029] Figure 2 It is a schematic diagram of the installation structure of the inner tank and the cover plate of the present application;

[0030] Figure 3 It is a schematic diagram of the installation structure of the inner tank and the evaporator of the present application;

[0031] Figure 4 It is a schematic diagram of the rear structure of the cover plate of the present application;

[0032] Figure 5 It is a front view of the inner tank and evaporator of the present application;

[0033] Figure 6 yes Figure 5 Enlarged view of part A in the middle;

[0034] Figure 7 yes Figure 5 Enlarged view of middle part B;

[0035] Figure 8 yes Figure 5 Enlarged view of the middle C part;

[0036] Fig. 9 It is a schematic diagram of the installation structure of the cover plate and the evaporator of the present application;

[0037] Fig.10 This is a front view of the installation structure of the cover plate and the evaporator of the present application;

[0038] Fig.11 yes Fig.10 Cross-sectional view of section DD.

[0039] In the figure, 1, box body; 2, liner; 21, accommodating chamber; 22, first flow limiting part; 23, clamping claw; 3, door body; 4, cover plate; 41, air duct; 42, second flow limiting part; 5, evaporator; 51, evaporating tube; 511, straight section; 512, bending section; 52, fin. DETAILED DESCRIPTION

[0040] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0041] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0042] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0043] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0044] As a common appliance in daily life, refrigerators are now widely used. Users can store food in refrigerators to prevent food from spoiling.

[0045] In this embodiment, the refrigerator includes a box body 1 and an inner container 2.

[0046] The box body 1 is used to form the overall appearance of the refrigerator. The box body 1 is roughly in the shape of a rectangular parallelepiped frame. The top of the box body 1 and the bottom of the box body 1 are opposite ends. From the top of the box body 1 to the bottom of the box body 1 is the height direction of the box body 1. The left side of the box body 1 and the right side of the box body 1 are opposite sides. From the left side of the box body 1 to the right side of the box body 1 is the width direction of the box body 1. The front side of the box body 1 and the back side of the box body 1 are opposite sides. From the front side of the box body 1 to the back side of the box body 1 is the thickness direction of the box body 1. The liner 2 is arranged in the box body 1.

[0047] A refrigerating chamber is arranged inside the inner tank 2, and the refrigerating chamber is used to place items. The refrigerating chamber has a chamber opening, and the chamber opening direction is arranged toward the front side of the box body 1. The refrigerating chamber can be a refrigerating temperature environment, a freezing temperature environment, or a normal temperature environment. A door body 3 is arranged at the chamber opening, and the door body 3 is arranged in a straight plate shape at the front side of the box body 1. The door body 3 can be connected to the box body 1 in an openable and closable manner to open or close the refrigerating chamber.

[0048] It can be understood that the refrigerator also includes a refrigeration system and an air supply system. The refrigeration system is installed in the box 1, and the refrigeration system is used to provide cold air to the refrigeration room; the refrigeration system generally refers to a closed system composed of components such as a compressor, an evaporator, a condenser, a drying filter, a return air pipe and a throttling device and a refrigerant. Each component is distributed at different positions of the box 1 according to its structural characteristics to meet the requirements of its corresponding function. The working process of the refrigeration system mainly includes a compression process, a condensation process, a throttling process and an evaporation process. The compression process is: after the power cord of the refrigerator is plugged in, when the contacts of the thermostat are connected, the compressor starts to work, and the low-temperature and low-pressure refrigerant from the evaporator is sucked into the compressor, and is compressed into a high-temperature and high-pressure refrigerant gas by the action of the compressor and then discharged into the condenser. The condensation process is: the high-temperature and high-pressure refrigerant gas exchanges heat with the external environment through the condenser, the temperature drops, and is gradually cooled to a saturated refrigerant vapor at room temperature and high pressure, and then cooled to a saturated refrigerant liquid. The throttling process is: the condensed refrigerant saturated liquid is filtered through a drying filter to remove moisture and impurities and then flows into the throttling device. The throttling device is used to throttle and reduce the pressure, and the refrigerant becomes wet steam at room temperature and low pressure. Evaporation process: The wet steam at room temperature and low pressure enters the evaporator and begins to absorb heat for gasification, which reduces the temperature of the evaporator and its surroundings, realizes refrigeration, and turns the refrigerant into a low-temperature, low-pressure gas. The refrigerant coming out of the evaporator returns to the compressor and repeats the above process. The energy conversion is carried out through the state change of the refrigerant, and the heat in the refrigerator is transferred to the air outside the box, thereby realizing the refrigeration cycle of the refrigerator.

[0049] The air supply system is installed in the box 1 to provide power for the flow of cold air. The air supply system generally includes a fan and a guide cavity. In some embodiments, the air inlet end of the guide cavity is arranged close to the fan, and the air outlet end of the guide cavity is arranged away from the fan. In other embodiments, the air outlet end of the guide cavity is arranged close to the fan, and the air inlet end of the guide cavity is arranged away from the fan. The fan drives the air in the guide cavity, and the evaporator is correspondingly arranged in the guide cavity. The cold air cooled by the evaporator flows along the guide cavity through the driving part of the fan. The cold air passes through the installation space formed between the inner tank 2 and the box 1, and finally enters the cold storage room to perform cooling operation on the cold storage room.

[0050] Based on the above structure, Figure 1-11 As shown, the first aspect of an embodiment of the present application proposes a refrigerator, comprising: a box body 1, an inner tank 2, a door body 3, a cover plate 4 and an evaporator 5, the inner tank 2 is installed in the box body 1, and the inner tank 2 is provided with a accommodating cavity 21 with a front opening, the door body 3 is covered on the accommodating cavity 21, an air duct 41 is defined between the cover plate 4 and the inner tank 2, the evaporator 5 is installed in the inner tank 2 and is located in the air duct 41, and is used to cool the air in the air duct 41; wherein, the inner tank 2 is provided with a first flow limiting portion 22 protruding toward the air duct 41, the first flow limiting portion 22 is inserted into the gap on the side of the evaporator 5, and the cover plate 4 is provided with a second flow limiting portion 42 protruding toward the air duct 41, and the second flow limiting portion 42 is attached to the front side of the evaporator 5.

[0051] Based on the above technical solution, the refrigerator of the present application has an opening on the front side of the box body 1 and an inner tank 2 is installed therein, the inner tank 2 has a receiving cavity 21, and is closed by a door body 3 to form a closed space for storing items that need to be refrigerated or frozen. In order to achieve the refrigeration or freezing effect of the inner tank 2, it is necessary to blow cold air into the inner tank 2, so a cover plate 4 and an evaporator 5 can be arranged in the inner tank 2, wherein the cover plate 4 can cooperate with the inner wall of the inner tank 2 to form an air duct 41 for air circulation, and the evaporator 5 can cool the air entering the air duct 41, thereby realizing the function of cooling the air, and the evaporation tube 51 of the evaporator 5 is arranged During installation, gaps will inevitably be formed on the sides, and the first flow limiting portion 22 extends into the gap on the sides of the evaporator 5. In the process of air flowing through the evaporator 5, the air can be guided to the position where the fins 52 are located in the middle of the evaporator tube 51, and the cooling effect becomes stronger. The remaining gap between the cover plate 4 and the evaporator 5 is blocked by the second flow limiting portion 42, so that the air is further guided to the position where the cooling effect of the evaporator 5 is good. This achieves the purpose of blocking the air outlet channels on both sides and in front of the evaporator 5 without increasing the mold investment and parts cost, and the return air can only pass through the evaporator 5, thereby improving the cooling efficiency of the product.

[0052] Among them, the cover plate 4 is preferably made of plastic material on the front side and foam material on the rear side. The front side plate of plastic material can ensure strength and hardness to form a reliable working space, and the rear side plate of foam material can not only prevent hard contact between the evaporator 5 and the cover plate 4, but also the second flow limiting portion 42 formed by the local thickening of the rear side forms an interference fit with the evaporator 5, which can effectively prevent wind from passing through the gap between the evaporator 5 and the foam of the air duct 41; more preferably, the second flow limiting portion 42 matches the width of the evaporator 5 in the width direction, extending uninterruptedly from left to right, so that the gap between the cover plate 4 and the evaporator 5 can be basically completely sealed, further controlling the air to only flow out of the evaporator 5, and the cooling effect is better.

[0053] In some embodiments of the present application, Figure 3 , Figure 5-9 and Fig.11 As shown, the evaporator 5 includes an evaporation tube 51 and a fin 52, and the evaporation tube 51 and the fin 52 are both installed on the inner tank 2, and the fin 52 is installed on the evaporation tube 51, and the extension direction of the fin 52 forms an installation angle with the extension direction of the evaporation tube 51, and the installation angle is greater than 0° and less than 180°. The evaporator tube 51 is provided with a low-temperature refrigerant, which vaporizes and absorbs heat to achieve the purpose of cooling the air around the evaporator tube 51, and the fins 52 are installed on the evaporator tube 51, and have an installation angle greater than 0° with the evaporator tube 51. Laying the fins 52 on the evaporator tube 51 is equivalent to increasing the surface area of ​​the evaporator tube 51, thereby increasing the contact area between the refrigerant and the air and improving the heat exchange efficiency. In addition, the geometric shape and material of the fins 52 will affect the heat transfer performance of the heat exchange. Increasing the surface area of ​​the fins 52 can increase the heat transfer rate between the refrigerant and the air and improve the heat transfer performance. The material and shape of the fins 52 can affect the operating stability and life of the evaporator 5. In the present application, the fins 52 are preferably square in shape and the material is metal, which not only has a strong cooling effect but also ensures the reliability of the installation.

[0054] Specifically, Figure 5-9As shown, the evaporator tube 51 includes a straight section 511 and a bent section 512. The straight sections 511 are arranged in the air duct 41 at intervals from top to bottom. The bent sections 512 connect adjacent straight sections 511 and are located on the left and right sides of the straight sections 511. The first flow limiting portion 22 is provided between at least one adjacent bent section 512 on the same side. The evaporator tube 51 is installed in the air duct 41 in a serpentine shape, which can effectively increase the contact area between the evaporator tube 51 and the air. The evaporator tube 51 is a tube, which is divided into a straight section 511 and a bent section 512. The straight section 511 extends to the left wall and the right wall and is connected to the next straight section 511 through the bent section 512. In order to achieve the installation of the evaporator tube 51, there will inevitably be gaps between the bent section 512 and the left wall and the right wall. After the fan blows air to the evaporator 5, part of the air will enter the inner tank 2 along these gaps. This part of the air cannot be effectively cooled, which will cause the refrigeration effect of the refrigerator to decrease. Therefore, a first flow limiting portion 22 with a convex block structure protruding toward the gap position of the bent section 512 can be provided on the inner tank 2, so that this part of the air that cannot be fully cooled cannot flow through this part of the gap, but can only be cooled through the straight section 511 of the evaporator tube 51 with good cooling effect, thereby effectively enhancing the refrigeration effect.

[0055] More specifically, Figure 5-7 As shown, the first flow limiting portion 22 is provided on both the left and right sides of the inner tank 2, and the first flow limiting portion 22 is respectively provided between the adjacent bending sections 512 on the left and the adjacent bending sections 512 on the right. The evaporating tube 51 of the serpentine layout will have bending portions on both the left and right sides, and the gaps between the left and right parts are all blocked by the first flow limiting portion 22, which can further reduce the air with poor cooling effect from entering the refrigerator or freezer, and further improve the refrigeration effect.

[0056] More specifically, Figure 3 , Figure 5-9 and Fig.11 As shown, there are multiple fins 52, and the multiple fins 52 are sequentially installed on the straight line segment 511 from top to bottom, and the multiple fins 52 are installed on the straight line segment 511 from left to right at intervals, so as to form an array-shaped fin 52 structure. Since the evaporation tube 51 is arranged in a serpentine shape, there are also multiple straight line segments 511 of the evaporation tube 51 from top to bottom. In order to increase the contact area between each straight line segment 511 and the air, it is necessary to sequentially install the fins 52 on the straight line segments 511 arranged at intervals. Similarly, in order to increase the contact area between the same straight line segment 511 and the air, the same straight line segment 511 is also provided with multiple fins 52, so that the fins 52 are arranged in an array on the straight line segment 511 of the evaporation tube 51, which not only has a stable and beautiful structure, but also further improves the contact area between the evaporation tube 51 and the air, and has a better cooling effect.

[0057] More specifically, Figure 3 , Figure 5-9 and Fig.11 As shown, the straight segment 511 is horizontally arranged in the air duct 41, the fin 52 is vertically arranged in the air duct 41, and the return air direction of the air duct 41 is from bottom to top. The angle between the straight segment 511 and the fin 52 is arranged at 90°, so that since the return air in the air duct 41 flows from bottom to top, the air flow direction is perpendicular to the straight segment 511, so that the air can pass through the interval-arranged straight segments 511 in sequence, ensuring sufficient cooling of the air. At the same time, since the extension direction of the fin 52 is in the same direction as the wind direction, the return air can pass through the evaporator 5 in a manner with minimal resistance, which improves the fluidity of the cold air compared to other angle arrangements.

[0058] More specifically, Figure 3 and Figure 5-9 As shown, the fins 52 are evenly spaced from left to right and installed on the straight line segment 511, and the lateral spacing of the fins 52 located on the upper side is smaller than the lateral spacing of the fins 52 located on the lower side. The uniform arrangement of the fins 52 in the left and right directions ensures the consistency of the space between each fin 52, so that the return air passes through the air duct 41 so that the wind force of the left and right parts is evenly distributed. At the same time, since the return air direction is from bottom to top, in order to allow the return air to enter the fins 52 of the evaporator 5 more and more easily, the lateral spacing of the fins 52 located at the return air inlet is larger, and the lateral spacing of the fins 52 located at the return air outlet is smaller, so that the air intake is easier. Further, the fins 52 are arranged so that the spacing of the three straight line segments 511 at the bottom decreases from bottom to top in sequence, and from the third straight line segment 511 upwards, the spacing of the fins 52 remains unchanged, so that the air intake is easy and the cooling effect is guaranteed.

[0059] More specifically, Figure 8 As shown, the inner pot 2 is provided with a clamp 23, and the clamp 23 is installed on the inner wall of the rear side of the inner pot 2, and the evaporation tube 51 is installed on the clamp 23 for fixing the evaporation tube 51. In order to achieve stable installation and fixation of the evaporation tube 51, the inner pot 2 of the present application is provided with a clamp 23 structure in the front, and the clamp 23 preferably adopts an elastic clamping position, and is preferably clamped on the straight section 511. The straight section 511 of the evaporation tube 51 only needs to approach the direction of the clamp 23, and then the evaporation tube 51 is clamped in the clamp 23 with a little force. Preferably, at least two clamps 23 are provided, and are sequentially arranged on the inner pot 2 along the horizontal direction, so that the evaporation tube 51 can be fixed more stably.

[0060] In some embodiments of the present application, Figure 6 , 7As shown in Figure 11, the thickness of the first flow limiting part 22 is 10mm-20mm, and the thickness of the second flow limiting part 42 is 1mm-3mm. The thickness of the first flow limiting part 22 cannot be too small, otherwise the flow limiting of air cannot be achieved, and the thickness of the first flow limiting part 22 cannot be too large, otherwise it will cause interference during the installation process. Therefore, it is best for the first flow limiting part 22 to adopt a size of 10mm-20mm; the thickness of the second flow limiting part 42 needs to be determined based on the distance between the cover plate 4 and the evaporator 5 after installation. According to the error in the conventional installation process, the second flow limiting part 42 can achieve stable flow limiting by adopting a size of 1mm-3mm. More preferably, the second flow limiting part 42 can adopt a size of 2mm.

[0061] like Figure 1-8 As shown, the second aspect of an embodiment of the present application proposes a refrigerator, comprising: a box body 1, an inner tank 2, a door body 3, a cover plate 4 and an evaporator 5, the inner tank 2 is installed in the box body 1, and the inner tank 2 is provided with a accommodating cavity 21 with a front opening, the door body 3 covers the accommodating cavity 21, and an air duct 41 is defined between the cover plate 4 and the inner tank 2, the evaporator 5 is installed in the inner tank 2 and is located in the air duct 41, and is used for cooling the air in the air duct 41; wherein, the inner tank 2 is provided with a first flow limiting portion 22 protruding toward the air duct 41, and the first flow limiting portion 22 is inserted into the gap on the side of the evaporator 5.

[0062] Based on the above technical scheme, the refrigerator of the present application has an opening on the front side of the box body 1 and an inner tank 2 is installed therein. The inner tank 2 has a accommodating cavity 21 and is closed by a door body 3 to form a closed space for storing items that need to be refrigerated or frozen. In order to achieve the refrigeration or freezing effect of the inner tank 2, it is necessary to blow cold air into the inner tank 2. Therefore, a cover plate 4 and an evaporator 5 can be arranged in the inner tank 2, wherein the cover plate 4 can cooperate with the inner wall of the inner tank 2 to form an air duct 41 for air circulation, and the evaporator 5 can cool the air entering the air duct 41, thereby realizing the function of cooling the air. The evaporation tube 51 of the evaporator 5 will inevitably form a gap on the side during installation, and the first flow limiting portion 22 extends into the gap on the side of the evaporator 5. In the process of air flowing through the evaporator 5, the air can be guided to the position where the fin 52 is in the middle of the evaporation tube 51, and the refrigeration effect becomes stronger. This achieves the purpose of blocking the air outlet channels on both sides of the evaporator 5 without increasing the mold investment and parts cost, and the return air can only pass through the evaporator 5, thereby improving the refrigeration efficiency of the product.

[0063] In summary, in the refrigerator of the present application, the front side of the box body 1 is open and the inner tank 2 is installed therein, the inner tank 2 is provided with a receiving cavity 21, and is closed by the door body 3 to form a closed space for storing items that need to be refrigerated or frozen. In order to achieve the refrigeration or freezing effect of the inner tank 2, it is necessary to blow cold air into the inner tank 2, so a cover plate 4 and an evaporator 5 can be provided in the inner tank 2, wherein the cover plate 4 can cooperate with the inner wall of the inner tank 2 to form an air duct 41 for air circulation, and the evaporator 5 can cool the air entering the air duct 41, thereby realizing the function of cooling the air, and the evaporation tube 51 of the evaporator 5 will be installed. It is inevitable that a gap is formed on the side, and the first flow limiting portion 22 extends into the gap on the side of the evaporator 5. In the process of air flowing through the evaporator 5, the air can be guided to the position where the fin 52 is located in the middle of the evaporator tube 51, and the cooling effect is enhanced. The remaining gap between the cover plate 4 and the evaporator 5 is blocked by the second flow limiting portion 42, so that the air is further guided to the position where the cooling effect of the evaporator 5 is good. This achieves the purpose of blocking the air outlet channels on both sides and the front of the evaporator 5 without increasing the mold investment and parts cost, and the return air can only pass through the evaporator 5, thereby improving the cooling efficiency of the product.

[0064] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present application. These improvements and substitutions should also be regarded as the scope of protection of the present application.

Claims

1. A refrigerator, characterized in that: include: Box; An inner liner, the inner liner is installed in the box body, and the inner liner is provided with a containing cavity with a front opening; A door body, wherein the door body cover is arranged on the accommodating cavity; a cover plate, wherein an air duct is defined between the cover plate and the inner container; and an evaporator, the evaporator being mounted on the inner tank and located in the air duct, and being used for cooling the air in the air duct; The inner tank is provided with a first flow limiting portion protruding toward the air duct, the first flow limiting portion is inserted into the gap on the side of the evaporator, and the cover plate is provided with a second flow limiting portion protruding toward the air duct, and the second flow limiting portion is attached to the front side of the evaporator.

2. The refrigerator according to claim 1, characterized in that: The evaporator includes an evaporating tube and fins, both of which are installed on the inner tank, and the fins are installed on the evaporating tube. The extension direction of the fins and the extension direction of the evaporating tube form an installation angle, and the installation angle is greater than 0° and less than 180°.

3. The refrigerator according to claim 2, characterized in that: The evaporator tube includes a straight section and a bent section, the straight sections are arranged in the air duct at intervals from top to bottom, the bent sections connect adjacent straight sections and are located on the left and right sides of the straight sections, and the first flow limiting portion is provided between at least one of the adjacent bent sections on the same side.

4. The refrigerator according to claim 3, characterized in that: The first flow limiting portion is disposed on both the left and right sides of the inner container, and the first flow limiting portion is disposed between the adjacent bending sections on the left side and between the adjacent bending sections on the right side, respectively.

5. The refrigerator according to claim 3, characterized in that: There are multiple fins, and the multiple fins are installed on the straight line segment in sequence from top to bottom, and the multiple fins are installed on the straight line segment at intervals from left to right to form a fin structure arranged in an array.

6. The refrigerator according to claim 5, characterized in that: The straight line segment is horizontally arranged in the air duct, the fins are vertically arranged in the air duct, and the return air direction of the air duct is from bottom to top.

7. The refrigerator according to claim 6, characterized in that: The fins are installed on the straight line segment at uniform intervals from left to right, and the lateral intervals of the fins located on the upper side are smaller than the lateral intervals of the fins located on the lower side.

8. The refrigerator according to claim 2, characterized in that: The inner container is provided with a clamping claw, the clamping claw is installed on the rear inner wall of the inner container, and the evaporating tube is installed on the clamping claw for fixing the evaporating tube.

9. The refrigerator according to claim 1, characterized in that: The thickness of the first flow limiting portion is 10 mm-20 mm, and the thickness of the second flow limiting portion is 1 mm-3 mm.

10. A refrigerator, characterized in that: include: Box; An inner liner, the inner liner is installed in the box body, and the inner liner is provided with a containing cavity with a front opening; A door body, wherein the door body cover is arranged on the accommodating cavity; a cover plate, wherein an air duct is defined between the cover plate and the inner container; and an evaporator, the evaporator being mounted on the inner tank and located in the air duct, and being used for cooling the air in the air duct; The inner tank is provided with a first flow limiting portion protruding toward the air duct, and the first flow limiting portion is inserted into the gap on the side of the evaporator.

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