Refrigerator

Abstract

The utility model relates to a refrigerator, which belongs to the technical field of refrigeration equipment, and comprises a box body, a mounting box, a compressor, an evaporator, an air return port, a ventilation shell, a first air outlet and a fan, the mounting box is arranged on the inner bottom wall of the box body; the compressor is arranged in the box body; the evaporator is arranged in the mounting box and is connected with the compressor; the return air inlet is formed in the mounting box; the ventilation shell is attached to the side wall of the box body and communicates with the mounting box; the first air outlet is formed in one vertical side wall of the ventilation shell; the fan is arranged in the ventilation shell; under the action of the draught fan, air enters the mounting box through the air return opening, and the air entering the mounting box enters the ventilation shell after being subjected to heat exchange through the evaporator and is output through the first air outlet.

Description

Technical Field

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

[0002] A freezer is a household or commercial appliance used to refrigerate or freeze food and items. It usually uses refrigeration technology to keep the temperature at a lower level to keep the food fresh and extend its shelf life.

[0003] In the prior art, a refrigerator comprises a box body, an evaporator is arranged inside the box body, an air duct is arranged inside the box body, and an air port connected to the air duct is opened on the inner side wall of the box body, so that cold air from the evaporator enters the box body through the air duct and the air port.

[0004] However, in the prior art, the position of the air outlet is close to the top, and the cold air after heat exchange through the evaporator will produce a certain amount of heat loss when flowing in the air duct, and the cooling effect on the bottom of the box body is slow. Utility Model Content

[0005] The utility model solves one of the technical problems in the related art at least to a certain extent.

[0006] To this end, the present application aims to provide a refrigerator, wherein the first air outlet is close to the bottom wall of the cabinet, so that the cold air output through the first air outlet is closer to the bottom of the cabinet, and can quickly cool the bottom of the cabinet.

[0007] In order to achieve the above object, the utility model provides a refrigerator, comprising:

[0008] A box body, wherein the top of the box body is open;

[0009] An installation box, the installation box is arranged on the inner bottom wall of the box body;

[0010] A compressor, wherein the compressor is arranged in the box;

[0011] an evaporator, the evaporator being arranged inside the installation box and connected to the compressor;

[0012] A return air inlet, the return air inlet being opened in the installation box;

[0013] A first air outlet, wherein the first air outlet is provided on a vertical side wall of the installation box;

[0014] A fan, wherein the fan is arranged in the installation box;

[0015] Under the action of the fan, air enters the installation box through the return air port, and the air entering the installation box is output through the first air outlet after heat exchange by the evaporator.

[0016] In the technical solution, the first air outlet is close to the bottom wall of the box body, so the cold air output through the first air outlet is closer to the bottom of the box body, which can quickly cool the bottom of the box body.

[0017] In addition, the present application also provides a refrigerator, which includes:

[0018] A box body, wherein the top of the box body is open;

[0019] An installation box, the installation box is arranged on the inner bottom wall of the box body;

[0020] A compressor, wherein the compressor is arranged in the box;

[0021] an evaporator, the evaporator being arranged inside the installation box and connected to the compressor;

[0022] A return air inlet, the return air inlet being opened in the installation box;

[0023] A ventilation shell, the ventilation shell is attached to the side wall of the box body, and the ventilation shell is connected to the installation box;

[0024] A first air outlet, wherein the first air outlet is provided on a vertical side wall of the ventilation shell;

[0025] A fan, wherein the fan is arranged in the ventilation shell;

[0026] Under the action of the fan, air enters the installation box through the return air port, and the air entering the installation box enters the ventilation shell after heat exchange through the evaporator and is output through the first air outlet.

[0027] In the technical solution, the first air outlet is close to the bottom wall of the box body, so the cold air output through the first air outlet is closer to the bottom of the box body, which can quickly cool the bottom of the box body.

[0028] In some embodiments of the present application, the evaporator has an output section and an input end, the return air outlet is close to the input end of the evaporator, and the first air outlet is close to the output end of the evaporator.

[0029] In the technical solution, air enters the installation box through the return air port, and the air moves along the evaporator under the action of the fan, and the air is cooled when passing through the evaporator, and the cold air moves to the output end of the evaporator and is output through the first air outlet, thereby increasing the contact area and duration between the air and the evaporator.

[0030] In some embodiments of the present application, a step is formed upward on the inner bottom wall of the box body, and the installation box is attached to the side wall of the step; the first air outlet is away from the step.

[0031] In the technical solution, the steps are formed so that the compressor can be accommodated under the steps, which facilitates the overall layout of the box.

[0032] In some embodiments of the present application, a reference plane is defined, and a side of the installation box that is vertical and away from the step is located on the reference plane. A side of the box body that is located on the reference plane away from the step is a first accommodating cavity, and the first air outlet faces the first accommodating cavity.

[0033] In the technical solution, through this design, the airflow from the first air outlet can be blown toward the first accommodating cavity, so that the first accommodating cavity can be cooled quickly and the cooling speed is improved.

[0034] In some embodiments of the present application, a first grille is provided at the first air outlet, and the first grille is detachably connected to the first air outlet.

[0035] In the technical solution, the first grille can partially block the air volume passing through the first air outlet, and the air volume passing through the first air outlet can be adjusted by changing the first grille, so that the cooling capacity can be adjusted according to different needs.

[0036] In some embodiments of the present application, the length direction of the first air outlet is vertically arranged, and the top of the first air outlet is not higher than the top wall of the installation box.

[0037] In the technical solution, this design is used to make the height of the first air outlet lower, ensure that the first air outlet is close to the inner bottom wall of the box, ensure that the cold air output through the first air outlet can quickly reach the bottom of the box, and improve the cooling speed of the bottom end of the box.

[0038] In some embodiments of the present application, the air outlet direction of the first air outlet is the same as the length direction of the box.

[0039] In the technical solution, this design allows the cold air output through the first air outlet to quickly fill the interior of the box, reducing the blockage of the cold air during movement and improving the cooling of the interior of the box.

[0040] In some embodiments of the present application, the fan is a centrifugal fan, and the circumferential direction of the centrifugal fan is the same as the length direction of the evaporator; the first air outlet is arranged on one side of the peripheral wall of the centrifugal fan.

[0041] In the technical solution, the centrifugal fan can quickly output the airflow passing through the evaporator through the first air outlet, thereby increasing the air volume and wind speed.

[0042] In some embodiments of the present application, a thermal insulation member is provided inside the installation box, and the thermal insulation member is located on a side of the evaporator close to the inside of the box.

[0043] In the technical solution, insulation is provided by a thermal insulation component to prevent the food inside the box from coming into contact with the evaporator too closely and being frozen.

[0044] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 is a schematic diagram of the overall structure of a refrigerator according to an embodiment of the present application;

[0046] Figure 2 is a top view of a refrigerator according to an embodiment of the present application;

[0047] Figure 3 is a side view of a refrigerator according to an embodiment of the present application;

[0048] Figure 4 is a schematic diagram of the internal structure of a refrigerator according to an embodiment of the present application;

[0049] Figure 5 is a schematic structural diagram of an inner tank portion of a refrigerator according to an embodiment of the present application;

[0050] Figure 6 is a cross-sectional view of the inner tank of a refrigerator according to an embodiment of the present application;

[0051] Figure 7 is a cross-sectional view of the inner tank of a refrigerator according to an embodiment of the present application;

[0052] Figure 8 is a schematic diagram of the internal structure of a refrigerator according to an embodiment of the present application;

[0053] Fig. 9 is a front view of the interior of a refrigerator according to an embodiment of the present application;

[0054] Fig.10 It is a schematic structural diagram of the evaporator of the refrigerator according to the embodiment of the present application.

[0055] In the above figures: 100, box body; 101, liner; 200, door body; 300, evaporator; 400, installation box; 401, return air outlet; 402, thermal insulation; 500, ventilation shell; 601, first air outlet; 6011, first grille; 700, fan. DETAILED DESCRIPTION

[0056] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0057] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0059] In the present utility model, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0060] The present invention is described in detail below by way of exemplary embodiments. However, it should be understood that, without further description, elements, structures and features in one embodiment may also be beneficially combined in other embodiments.

[0061] In the present application, the refrigerator includes a box body, a door body and a refrigeration system: the box body is usually made of metal or plastic and has certain heat preservation performance. A refrigeration chamber or a freezer chamber is arranged inside the box body. The door body is used to open and close the refrigerator. The refrigeration system includes a compressor, a condenser, an evaporator and a refrigerant, etc. The heat inside the refrigerator is transferred to the outside, thereby achieving a cooling effect.

[0062] Hereinafter, embodiments of the present application will be described in detail with reference to the accompanying drawings.

[0063] Please refer to all the drawings. In an illustrative embodiment of the refrigerator of the present invention, the refrigerator includes: a box body 100, an installation box 400, an evaporator 300, a return air port 401, a first air outlet 601 and a fan 700, wherein the top of the box body 100 is open.

[0064] The installation box 400 is disposed on the inner bottom wall of the box body 100 .

[0065] The evaporator 300 is disposed inside the installation box 400 .

[0066] The return air port 401 is opened in the installation box 400 .

[0067] The first air outlet 601 is disposed on a vertical side wall of the installation box 400 .

[0068] The fan 700 is disposed in the installation box 400 .

[0069] Under the action of the fan 700 , air enters the installation box 400 through the return air port 401 , and the air entering the installation box 400 is output through the first air outlet 601 after heat exchange through the evaporator 300 .

[0070] The first air outlet 601 is close to the bottom wall of the housing 100 , so the cold air output through the first air outlet 601 is closer to the bottom of the housing 100 , and can quickly cool the bottom of the housing 100 .

[0071] In some embodiments, a door 200 is disposed at the opening of the box 100 , and the door 200 is used to open or close the box 100 .

[0072] In some embodiments, the box body 100 includes an inner liner 101 and an outer shell, and the inner liner 101 is disposed in the outer shell.

[0073] In some embodiments, there is an equipment cavity between the outer shell and the inner tank 101 , and a compressor is disposed in the equipment cavity. The compressor is connected to the evaporator 300 , and the compressor is used to input refrigerant into the evaporator 300 to change the temperature of the evaporator 300 .

[0074] In some embodiments, the evaporator 300 has an output section and an input end, the return air port 401 is close to the input end of the evaporator 300 , and the first air outlet 601 is close to the output end of the evaporator 300 .

[0075] The air enters the installation box 400 through the return air port 401, and the air moves along the evaporator 300 under the action of the fan 700. The air is cooled when passing through the evaporator 300, and the cold air moves to the output end of the evaporator 300 and is output through the first air outlet 601. The contact area and duration between the air and the evaporator 300 are increased.

[0076] In some embodiments, the first air outlet 601 is directly opened in the installation box 400 , and the first air outlet 601 is communicated with the inside of the installation box 400 . The first air outlet 601 is communicated with the output end of the evaporator 300 .

[0077] In some embodiments, a step is formed upward on the inner bottom wall of the box body 100, and the installation box 400 is attached to the side wall of the step. The first air outlet 601 is away from the step.

[0078] By forming the step, the compressor can be accommodated under the step, which facilitates the overall layout of the box body 100.

[0079] In some embodiments, the step is located at one end of the length direction of the box body 100. The upper surface of the step is directly connected to the vertical side wall at one end of the length direction of the box body 100.

[0080] In some embodiments, the side of the installation box 400 close to the step is attached to the vertical side panel of the step.

[0081] In some embodiments, the first air outlet 601 is disposed on a side of the installation box 400 away from the step, thereby ensuring that the first air outlet 601 does not blow toward the step, and ensures that the first air outlet 601 can blow toward the inside of the box body 100, thereby improving the refrigeration effect on the refrigerator.

[0082] In some embodiments, the vertical sidewall of the step is perpendicular to the inner bottom wall of the inner box 100. The upper surface of the step is parallel to the inner bottom wall of the box 100.

[0083] In some embodiments, the installation box 400 is further provided with a second air outlet.

[0084] In some embodiments, a second grille is disposed on the second air outlet.

[0085] In some embodiments, a second ventilation hole is formed on the second grille.

[0086] Please refer to all the drawings. In addition, the present application also provides a refrigerator, which includes: a box body 100, an installation box 400, an evaporator 300, a return air port 401, a ventilation shell 500, a first air outlet 601 and a fan 700, wherein the top of the box body 100 is open.

[0087] The installation box 400 is disposed on the inner bottom wall of the box body 100 .

[0088] The evaporator 300 is disposed inside the installation box 400 .

[0089] The return air port 401 is opened in the installation box 400 .

[0090] The ventilation shell 500 is attached to the side wall of the box body 100 , and the ventilation shell 500 is communicated with the installation box 400 .

[0091] The first air outlet 601 is disposed on a vertical side wall of the ventilation shell 500 .

[0092] The fan 700 is disposed in the ventilation shell 500 .

[0093] Under the action of the fan 700 , air enters the installation box 400 through the return air port 401 . The air entering the installation box 400 enters the ventilation shell 500 after heat exchange through the evaporator 300 and is output through the first air outlet 601 .

[0094] In some embodiments, the box body 100 is rectangular, and the opening of the box body 100 is opened on the upper surface of the box body 100 .

[0095] In some embodiments, a door 200 is disposed at the opening of the box 100 , and the door 200 is used to open or close the box 100 .

[0096] In some embodiments, the box body 100 includes an inner liner 101 and an outer shell, and the inner liner 101 is disposed in the outer shell.

[0097] In some embodiments, there is an equipment cavity between the outer shell and the inner tank 101 , and a compressor is disposed in the equipment cavity. The compressor is connected to the evaporator 300 , and the compressor is used to input refrigerant into the evaporator 300 to change the temperature of the evaporator 300 .

[0098] In some embodiments, the inner bottom wall of the box body 100 is arranged horizontally.

[0099] In some embodiments, the length direction of the evaporator 300 is arranged horizontally.

[0100] In some embodiments, the length direction of the evaporator 300 is perpendicular to the length direction of the cabinet 100 .

[0101] In some embodiments, the installation box 400 is rectangular. The length direction of the installation box 400 is the same as the length direction of the evaporator 300.

[0102] In some embodiments, the evaporator 300 has an output section and an input end, the return air port 401 is close to the input end of the evaporator 300 , and the first air outlet 601 is close to the output end of the evaporator 300 .

[0103] The air enters the installation box 400 through the return air port 401, and the air moves along the evaporator 300 under the action of the fan 700. The air is cooled when passing through the evaporator 300, and the cold air moves to the output end of the evaporator 300 and is output through the first air outlet 601. The contact area and duration between the air and the evaporator 300 are increased.

[0104] In some embodiments, the vent casing 500 is disposed at one end of the mounting box 400 close to the output end of the evaporator 300 .

[0105] In some embodiments, a step is formed upward on the inner bottom wall of the box body 100, and the installation box 400 is attached to the side wall of the step; the first air outlet 601 is away from the step.

[0106] By forming the step, the compressor can be accommodated under the step, which facilitates the overall layout of the box body 100.

[0107] In some embodiments, the step is located at one end of the length direction of the box body 100. The upper surface of the step is directly connected to the vertical side wall at one end of the length direction of the box body 100.

[0108] In some embodiments, the side of the installation box 400 close to the step is attached to the vertical side panel of the step.

[0109] In some embodiments, the first air outlet 601 is disposed on a side of the ventilation shell 500 away from the step, thereby ensuring that the first air outlet 601 does not blow toward the step, and ensures that the first air outlet 601 can blow toward the interior of the box body 100, thereby improving the refrigeration effect of the refrigerator.

[0110] In some embodiments, the vertical sidewall of the step is perpendicular to the inner bottom wall of the inner box 100. The upper surface of the step is parallel to the inner bottom wall of the box 100.

[0111] In some embodiments, a reference plane is defined, and the side of the installation box 400 that is vertical and away from the step is located on the reference plane. The side of the box body 100 that is located on the reference plane away from the step is the first accommodating cavity, and the first air outlet 601 faces the first accommodating cavity.

[0112] Through this design, the airflow of the first air outlet 601 can be blown toward the first accommodating cavity, so that the first accommodating cavity is quickly cooled, thereby improving the cooling speed.

[0113] In some embodiments, in the box body 100 , the space above the installation box 400 is a second accommodation cavity.

[0114] In some embodiments, the second accommodating cavity is the space inside the box body 100 between the reference surface and the vertical side wall of the step.

[0115] In some embodiments, the space above the step is a third accommodating cavity.

[0116] In some embodiments, the interior of the box 100 is divided by the first accommodation chamber, the second accommodation chamber, and the third accommodation chamber. That is, the first accommodation chamber, the second accommodation chamber, and the third accommodation chamber form the interior space of the box 100.

[0117] In some embodiments, the volume of the first accommodating cavity is larger than that of the second accommodating cavity. The volume of the first accommodating cavity is larger than that of the third accommodating cavity.

[0118] Since the first accommodating chamber has the largest volume, the first accommodating chamber requires the most cold air. Therefore, the first air outlet 601 faces the first accommodating chamber to improve the cooling effect on the first accommodating chamber.

[0119] In some embodiments, a first grille 6011 is provided at the first air outlet 601, and the first grille 6011 is detachably connected to the first air outlet 601. The first grille 6011 can partially block the air volume passing through the first air outlet 601, and the air volume passing through the first air outlet 601 can be adjusted by changing the first grille 6011, so that the cooling capacity can be adjusted according to different needs.

[0120] In some embodiments, the first grille 6011 has a first ventilation hole, and the air output through the first air outlet 601 is input into the box body 100 through the first ventilation hole.

[0121] In some embodiments, the first grille 6011 has a plurality of first ventilation holes, and the plurality of first ventilation holes together realize the output of cold air.

[0122] In some embodiments, different first grilles 6011 may have different numbers of first ventilation holes. Different first grilles 6011 may be replaced according to different requirements to achieve different air volumes, thereby changing the cooling effect.

[0123] In some embodiments, the apertures of the first ventilation holes of different first grilles 6011 may be different. Different first grilles 6011 may be replaced according to different requirements to achieve different air volumes, thereby changing the cooling effect.

[0124] In some embodiments, the apertures of all first ventilation holes on different first grilles 6011 may be different, so as to ensure that the air outputs of different first grilles 6011 are different.

[0125] In some embodiments, the length direction of the first grille 6011 is the same as the length direction of the first air outlet 601 .

[0126] In some embodiments, if there are multiple first air outlets 601 , the multiple first air outlets 601 are arranged at intervals along the length direction of the first grille 6011 .

[0127] In some embodiments, if there are multiple first air outlets 601 , the multiple first air outlets 601 are arranged at intervals along the length direction of the first air outlet 601 .

[0128] In some embodiments, the first grille 6011 is connected to the first air outlet 601 by snapping and slotting.

[0129] In some embodiments, the first grille 6011 is connected to the first air outlet 601 by a threaded connector, which includes but is not limited to screws and bolts.

[0130] In some embodiments, the first air outlet 601 is rectangular.

[0131] In some embodiments, the length direction of the first air outlet 601 is vertically arranged, and the top of the first air outlet 601 is not higher than the top wall of the installation box 400 .

[0132] This design allows the height of the first air outlet 601 to be relatively low, ensuring that the first air outlet 601 is close to the inner bottom wall of the cabinet 100, ensuring that the cold air output through the first air outlet 601 can quickly reach the bottom of the cabinet 100, thereby increasing the cooling speed of the bottom end of the cabinet 100.

[0133] In some embodiments, the depth direction of the first air outlet 601 is the same as the length direction of the housing 100 .

[0134] In some embodiments, the air outlet direction of the first air outlet 601 is the same as the length direction of the box body 100 .

[0135] In some embodiments, the air outlet direction of the first air outlet 601 is the same as the depth direction of the first air outlet 601 .

[0136] Through this design, the cold air output through the first air outlet 601 can quickly fill the interior of the box 100, reduce the blockage of the cold air during movement, and improve the cooling of the interior of the box 100.

[0137] In some embodiments, the fan 700 is a centrifugal fan, and the circumferential direction of the centrifugal fan is the same as the length direction of the evaporator 300; the first air outlet 601 is disposed on one side of the peripheral wall of the centrifugal fan.

[0138] The centrifugal fan can quickly output the airflow passing through the evaporator 300 through the first air outlet 601, thereby increasing the air volume and wind speed.

[0139] In some embodiments, the fan 700 is an axial flow fan, which is disposed between the first air outlet 601 and the evaporator 300 , and the axial direction of the axial flow fan is the same as the length direction of the evaporator 300 .

[0140] In some embodiments, the fan 700 is an axial flow fan, which is disposed between the first air outlet 601 and the evaporator 300 , and the axial direction of the axial flow fan is the same as the depth direction of the first air outlet 601 .

[0141] In some embodiments, a temperature insulating member 402 is disposed inside the installation box 400, and the temperature insulating member 402 is located on a side of the evaporator 300 close to the inside of the box 100. The temperature insulating member 402 is used for heat insulation to prevent the food inside the box 100 from being too close to the evaporator 300 and being frozen.

[0142] In some embodiments, the thermal insulation member 402 includes an upper thermal insulation plate, and the upper thermal insulation plate is disposed above the evaporator 300 .

[0143] In some embodiments, the thermal insulation member 402 includes a side thermal insulation plate, and the side thermal insulation plate is disposed on a side of the evaporator 300 away from the step.

[0144] In some embodiments, the upper insulation board and the side insulation boards are connected to each other.

[0145] In some embodiments, the ventilation shell 500 is further provided with a second air outlet.

[0146] In some embodiments, a second grille is disposed on the second air outlet.

[0147] In some embodiments, a second ventilation hole is formed on the second grille.

[0148] In some embodiments, the return air inlet 401 is a first return air inlet 401 , which is opened on the upper surface of the installation box 400 , and the first return air inlet 401 connects the inside of the installation box 400 with the outside.

[0149] Air enters the installation box 400 from the first air return port 401 above the installation box 400 , and after being cooled by the evaporator 300 , the air is output through the first air outlet 601 under the action of the fan 700 .

[0150] In some embodiments, the return air inlet 401 is a second return air inlet 401 , which is opened on the upper surface of the installation box 400 , and the second return air inlet 401 connects the inside of the installation box 400 with the outside.

[0151] Air enters the installation box 400 from the side of the installation box 400 through the second air return port 401 , and after being cooled by the evaporator 300 , the air is output through the second air outlet under the action of the fan 700 .

[0152] In some embodiments, the return air vent 401 includes a first return air vent 401 and a second return air vent 401. The first return air vent 401 is opened on the upper surface of the installation box 400, and the first return air vent 401 connects the inside of the installation box 400 with the outside. The second return air vent 401 is opened on the upper surface of the installation box 400, and the second return air vent 401 connects the inside of the installation box 400 with the outside.

[0153] The first return air port 401 and the second return air port 401 simultaneously return air to increase the return air volume, thereby increasing the air volume cooled by the evaporator 300, and improving the cooling speed and cooling effect.

[0154] In some embodiments, the step is formed by bending the inner container 101 .

[0155] In some embodiments, an equipment cavity is formed below the step.

[0156] In some embodiments, the compressor is disposed in an equipment cavity below the step.

[0157] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A refrigerator, characterized in that: It includes: A box body, wherein the top of the box body is open; An installation box, the installation box is arranged on the inner bottom wall of the box body; A compressor, wherein the compressor is arranged in the box; an evaporator, the evaporator being arranged inside the installation box and connected to the compressor; A return air inlet, the return air inlet being opened in the installation box; A first air outlet, wherein the first air outlet is provided on a vertical side wall of the installation box; A fan, wherein the fan is arranged in the installation box; Under the action of the fan, air enters the installation box through the return air port, and the air entering the installation box is output through the first air outlet after heat exchange by the evaporator.

2. A refrigerator, characterized in that: It includes: A box body, wherein the top of the box body is open; An installation box, the installation box is arranged on the inner bottom wall of the box body; A compressor, wherein the compressor is arranged in the box; an evaporator, the evaporator being arranged inside the installation box and connected to the compressor; A return air inlet, the return air inlet being opened in the installation box; A ventilation shell, the ventilation shell is attached to the side wall of the box body, and the ventilation shell is connected to the installation box; A first air outlet, wherein the first air outlet is provided on a vertical side wall of the ventilation shell; A fan, wherein the fan is arranged in the ventilation shell; Under the action of the fan, air enters the installation box through the return air port, and the air entering the installation box enters the ventilation shell after heat exchange through the evaporator and is output through the first air outlet.

3. The refrigerator according to claim 1 or 2, characterized in that: The evaporator has an output section and an input end, the return air port is close to the input end of the evaporator, and the first air outlet is close to the output end of the evaporator.

4. The refrigerator according to claim 1 or 2, characterized in that: The inner bottom wall of the box body is formed with a step upward, and the installation box is attached to a side wall of the step; the first air outlet is away from the step.

5. The refrigerator according to claim 4, characterized in that: A reference plane is defined, a side of the installation box that is vertical and away from the step is located on the reference plane, a side of the box body that is located on the reference plane away from the step is a first accommodating cavity, and the first air outlet faces the first accommodating cavity.

6. The refrigerator according to claim 1 or 2, characterized in that: A first grille is disposed at the first air outlet, and the first grille is detachably connected to the first air outlet.

7. The refrigerator according to claim 1 or 2, characterized in that: The length direction of the first air outlet is vertically arranged, and the top of the first air outlet is not higher than the top wall of the installation box.

8. The refrigerator according to claim 1 or 2, characterized in that: The air outlet direction of the first air outlet is the same as the length direction of the box body.

9. The refrigerator according to claim 1 or 2, characterized in that: The fan is a centrifugal fan, and the circumferential direction of the centrifugal fan is the same as the length direction of the evaporator; the first air outlet is arranged on one side of the peripheral wall of the centrifugal fan.

10. The refrigerator according to claim 1 or 2, characterized in that: A thermal insulation component is arranged inside the installation box, and the thermal insulation component is located on a side of the evaporator close to the inside of the box.

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