Cold storage equipment

Abstract

The utility model relates to the technical field of electrical equipment, and discloses a cold storage device which comprises a box body, a drawer, a first air supply assembly, a second air supply assembly and a heating piece, the box body is provided with a chamber, the drawer is arranged in the chamber in a push-pull mode, a gap between the drawer and the chamber is a first area, and the first air supply assembly comprises a first air supply plate. The first air supply assembly comprises a first air supply plate and is arranged between the outer side wall of the drawer and the side wall of the compartment, the first air supply plate is provided with a first air supply opening communicating with the first area, the second air supply assembly comprises a second air supply plate and is arranged above the drawer, the second air supply plate is provided with a second air supply opening communicating with the first area, and heating pieces are arranged on the first air supply plate and / or the second air supply plate; the heating device is used for heating airflow flowing to the first area. Air flow is heated by the heating piece and then is blown to the outer surface of the drawer, the surface of the sliding rail and the inner wall of the compartment from the first air supply outlet and the second air supply outlet, the efficient frost moving effect can be achieved, normal use of the drawer is guaranteed, and the refrigeration effect of the cold storage equipment is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electrical equipment, especially to a cold storage equipment. BACKGROUND

[0002] This part provides only background information related to the present disclosure, which is not necessarily prior art.

[0003] The setting temperature of the deep cold refrigerator chamber is usually lower than-30 DEG C, and when the door is opened periodically, the humid air in the external environment can enter the deep cold chamber, the chamber surface frost is serious, and frost is formed on the surface of the drawer and the surface of the drawer slide rail, the frost layer can affect the normal opening and closing of the drawer, reduce the available space of the storage chamber, and also affect the refrigeration effect of the refrigerator. SUMMARY

[0004] The utility model discloses a kind of cold storage equipment, comprising:

[0005] The utility model provides a kind of cold storage equipment, comprising:

[0006] Box, with the chamber with opening;

[0007] Drawer, is push-pullly arranged in the chamber, and the gap between the drawer and the chamber forms a first area;

[0008] First air supply component, is set between the outer side wall of the drawer and the side wall of the chamber, and the first air supply component includes first air supply plate, the first air supply plate has first air supply port, and the first air supply port is communicated with the first area;

[0009] Second air supply component, is set above the drawer, and the second air supply component includes second air supply plate, and the second air supply plate has second air supply port, and the second air supply port is communicated with the first area, for air supply for the first area;

[0010] Heating element, the first air supply plate is provided with the heating element for heating the airflow flowing to the first area through the first air supply port, and / or the second air supply plate is provided with the heating element for heating the airflow flowing to the first area through the second air supply port.

[0011] The cold storage equipment has the first air supply component, the second air supply component and the heating part, the first air supply component is arranged between the outer side wall of the drawer and the side wall of the compartment, the second air supply component is arranged above the drawer, the first air supply component comprises the first air supply plate, the first air supply plate has the first air supply port, the first air supply port is communicated with the first area formed by the gap between the drawer and the compartment, the second air supply component comprises the second air supply plate, the second air supply plate has the second air supply port, the second air supply port is communicated with the first area, the heating part for heating the airflow flowing to the first area through the first air supply port is arranged on the first air supply plate, and / or the heating part for heating the airflow flowing to the first area through the second air supply port is arranged on the second air supply plate, and the high-temperature airflow flows out from the first air supply port and / or the second air supply port and blows to the outer surface of the drawer, the surface of the slide rail and the inner wall of the compartment, so that the high-efficiency frost removal effect can be obtained in the high-temperature environment, the frost layer on the surfaces of the drawer, the slide rail and the compartment is melted, the normal use of the drawer is ensured, and the cold storage reserve refrigeration effect is improved.

[0012] In addition, the cold storage equipment according to the utility model also has the following additional technical features.

[0013] In some embodiments of the utility model, the cold storage equipment further comprises a heat exchange assembly, and the heat exchange assembly has a heat exchange chamber, and the heat exchange chamber has a first air outlet and a second air outlet.

[0014] The first air supply plate is defined with a first air supply channel, the first air outlet is communicated with the first air supply channel, the first air supply plate is provided with a first air inlet, and the two ends of the first air supply channel are communicated with the first air inlet and the first air outlet respectively; and / or the second air supply plate is defined with a second air supply channel, the second air outlet is communicated with the second air supply channel, the second air supply plate is provided with a second air inlet, and the two ends of the second air supply channel are communicated with the second air inlet and the second air outlet respectively.

[0015] In some embodiments of the utility model, the heat exchange chamber further has a third air outlet, the drawer has a storage space inside, and the third air outlet is communicated with the storage space.

[0016] In some embodiments of the utility model, the heat exchange assembly comprises an evaporator and an air duct cover plate, the air duct cover plate and the box body surround the heat exchange chamber, and the evaporator is arranged in the heat exchange chamber.

[0017] In some embodiments of the utility model, the number of the first air supply components is two, the two first air supply components are arranged on the opposite two side walls of the drawer along the horizontal direction, and along the horizontal direction, the orthographic projection of the drawer on the plane where the first air supply plate is located is located in the area of the first air supply plate.

[0018] In some embodiments of the present application, the second air supply plate is arranged above the drawer along the height direction of the cold storage device, and the drawer forms a projection on the plane where the second air supply plate is located, and the projection is located within the area of the second air supply plate along the height direction of the cold storage device.

[0019] In some embodiments of the present application, the distance between the second air supply port and the outer edge of the drawer is L1, wherein 4mm≤L1≤7mm.

[0020] In some embodiments of the present application, the cold storage device further comprises a return air port, the return air port is arranged at the bottom of the chamber, and the return air port is in communication with the heat exchange assembly.

[0021] In some embodiments of the present application, the cold storage device further comprises a door body, and a flow guide member is arranged on the side of the drawer facing the door body, the flow guide member is used to guide the airflow flowing out of the first air supply port and the second air supply port to the return air port.

[0022] In some embodiments of the present application, the first air supply assembly further comprises a first heat insulation layer, the first heat insulation layer is arranged on the side of the first air supply plate facing the drawer, and a plurality of first through holes are arranged on the first heat insulation layer and opposite to the first air supply port; and / or, the second air supply assembly further comprises a second heat insulation layer, the second heat insulation layer is arranged on the side of the second air supply plate facing the drawer, and a plurality of second through holes are arranged on the second heat insulation layer and opposite to the second air supply port. BRIEF DESCRIPTION OF DRAWINGS

[0023] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of the preferred embodiments and are not intended to limit the scope of the present application. Moreover, like reference numerals designate similar parts throughout the several views in the drawings. In the drawings:

[0024] Figure 1 A structural schematic diagram of a cold storage device according to an embodiment of the present application is schematically shown;

[0025] Figure 2 Figure 1 A partial structural schematic diagram of a cold storage device shown in FIG. 1;

[0026] Figure 3 Figure 2 A structural schematic diagram of a cold storage device shown in FIG. 1 from a second perspective;

[0027] Figure 4 Fig. 1 schematically shows a structure schematic view of a first air supply plate of a cold storage device according to an embodiment of the present application in a first perspective view;

[0028] Figure 5 Fig. 2 schematically shows a structure schematic view of a first air supply plate of a cold storage device according to an embodiment of the present application in a second perspective view; Figure 4 Fig. 3 is a cross-sectional view of the cold storage device in section A-A;

[0029] Figure 6 Fig. 4 schematically shows a structure schematic view of a second air supply plate of a cold storage device according to an embodiment of the present application in a first perspective view;

[0030] Figure 7 Fig. 5 schematically shows an exploded view of a first air supply plate of a cold storage device according to an embodiment of the present application;

[0031] Figure 8 Fig. 6 schematically shows a structure schematic view of a second air supply plate of a cold storage device according to an embodiment of the present application in a second perspective view;

[0032] Figure 9 Fig. 7 schematically shows a structure schematic view of a second air supply plate of a cold storage device according to an embodiment of the present application in a second perspective view;

[0033] Figure 10 Fig. 8 schematically shows a partial structure schematic view of a second air supply plate of a cold storage device according to an embodiment of the present application;

[0034] Figure 11 Fig. 9 schematically shows a front projection schematic view of a second air supply plate and a drawer of a cold storage device according to an embodiment of the present application;

[0035] Figure 12 Fig. 10 is an enlarged view of position B in Fig. 9; Figure 11 Fig. 11 schematically shows a structure schematic view of a heat exchange assembly of a cold storage device according to an embodiment of the present application;

[0036] Figure 13 Fig. 12 schematically shows a structure schematic view of an upper sub-drawer of a cold storage device according to an embodiment of the present application;

[0037] Figure 14 Fig. 13 schematically shows a structure schematic view of a lower sub-drawer of a cold storage device according to an embodiment of the present application.

[0038] Figure 15 Fig. 14 schematically shows a structure schematic view of a lower sub-drawer of a cold storage device according to an embodiment of the present application.

[0039] The reference signs are as follows:

[0040] 100, cold storage device;

[0041] 1, cabinet; 11, compartment;

[0042] 2, drawer; 21, upper sub-drawer; 22, lower sub-drawer; 221, guide rail;

[0043] 3, door body;

[0044] 41, first air supply plate; 411, first air supply port; 412, first air inlet; 42, first heating element; 43, first heat insulation layer; 431, first through hole;

[0045] 51, second air supply plate; 511, second air supply port; 512, second air inlet; 52, second heating element; 53, second heat insulation layer; 531, second through hole;

[0046] 6, heat exchange assembly; 61, evaporator; 62, air duct cover plate; 621, first air outlet; 622, second air outlet; 623, third air outlet;

[0047] 7, air return port;

[0048] 8, flow guide element; 81, flow guide baffle;

[0049] 91, sliding part; 911, pulley; 92, sliding fitting part; 921, sliding groove. DETAILED DESCRIPTION

[0050] Example embodiments of the present disclosure will be described more fully hereinafter with reference to the accompanying drawings; however, they are not intended to limit the present disclosure to particular embodiments. Rather, the intention is to convey the concept of the present disclosure to a technical person skilled in the art with the best mode for carrying out the present disclosure.

[0051] It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises", "comprising", "includes", "including" and "has" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order in which they are described, unless specifically indicated as such. It is also to be understood that additional or alternative steps can be employed.

[0052] Although the terms first, second, third, etc. can be used herein to describe various elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first", "second", and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

[0053] For ease of description, spatial relative terms can be used herein to describe the relationship of one element or feature to another element or feature as shown in the figures, such as "inner", "outer", "inward", "outward", "lower", "below", "upper", "above", and the like. Such spatial relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "under" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below" can encompass both an orientation of above and below. The terms "first", "second", and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

[0054] The deep-freezing refrigerator compartment setting temperature is usually lower than -30℃, and in the case of storing goods, such as putting goods into the refrigerator or taking goods out of the refrigerator, the door body of the refrigerator needs to be opened. After the door body of the refrigeration equipment is opened, the space in the refrigerator is communicated with the external environment, and the hot and humid air in the external environment is easy to enter the refrigerator, while the temperature in the refrigerator is low, and the water vapor carried in the hot and humid air will sublimate and frost on the inner wall of the refrigerator, resulting in poor refrigeration effect of the refrigerator. When the refrigerator is running in a deep-freezing mode, the saturation enthalpy of the air supply is very low, the frost removal capacity of the circulating air is low, the frost on the surface of the storage compartment cannot be effectively transferred to the evaporator for melting, and as the setting temperature of the freezing compartment decreases, and with the periodic opening of the door, the frost on the surface of the compartment is more serious, and the opening door pull exceeds the specified standard. As the frost layer gradually accumulates, the opening door pull gradually increases, affecting the user's experience, and reducing the available space of the storage compartment, reducing the working efficiency of the refrigerator, and affecting the refrigeration effect of the refrigerator.

[0055] In view of this, this embodiment provides a cold storage device 100, which aims to solve the above-mentioned technical problems by providing a first air supply assembly between the outer wall of the drawer 2 and the side wall of the compartment 11, and providing a second air supply assembly above the drawer 2, and heating the airflow flowing to the first area through the first air supply port 411 and / or the second air supply port 511 by a heating element.

[0056] like Figures 1 to 15 As shown, according to an embodiment of the present invention, a cold storage device 100 is proposed. The cold storage device 100 can be a deep-freeze refrigerator, a general household refrigerator, a freezer, or other equipment. In this embodiment, the cold storage device 100 is a deep-freeze refrigerator. The cold storage device 100 includes a housing 1, a drawer 2, a first air supply assembly, a second air supply assembly, and a heating element. The housing 1 has an interior chamber 11 with an opening on one side. The preset temperature of the cryogenic chamber 11 is no higher than -40℃. A door 3 is connected to the opening, allowing the housing 1 to be opened or closed. The housing 1 contains a drawer 2 for storing food, which is slidably installed within the chamber 11. The gap between the drawer 2 and the chamber 11 forms a first region. The first air supply assembly is located between the outer wall of the drawer 2 and the side wall of the chamber 11. The first air supply assembly includes a first air supply plate 41 with a first air outlet 411 connected to the first region. The second air supply assembly is located above the drawer 2 and includes a second air supply plate 51 with a second air outlet. 511, the second air outlet 511 is connected to the first area and is used to supply air to the first area; heating element, the first air outlet plate 41 is provided with a heating element for heating the airflow flowing to the first area through the first air outlet 411, and / or the second air outlet plate 51 is provided with a heating element for heating the airflow flowing to the first area through the second air outlet 511. It can be understood that the first air outlet plate 41 may be provided with a heating element for heating the airflow flowing to the first area through the first air outlet 411, or the second air outlet plate 51 may be provided with a heating element for heating the airflow flowing to the first area through the second air outlet 511, or both the first air outlet plate 41 and the second air outlet plate 51 are provided with heating elements for heating the airflow flowing to the first area through both the first air outlet 411 and the second air outlet 511.

[0057] The cold storage equipment 100 is provided with the first air supply assembly, the second air supply assembly and the heating element, the first air supply assembly is arranged between the outer side wall of the drawer 2 and the side wall of the compartment 11, the second air supply assembly is arranged above the drawer 2, the first air supply assembly comprises the first air supply plate 41, the first air supply plate 41 is provided with the first air supply port 411, the first air supply port 411 is communicated with the first area formed by the gap between the drawer 2 and the compartment 11, the second air supply assembly comprises the second air supply plate 51, the second air supply plate 51 is provided with the second air supply port 511, the second air supply port 511 is communicated with the first area, the first air supply plate 41 is provided with the heating element for heating the airflow flowing to the first area through the first air supply port 411, and / or the second air supply plate 51 is provided with the heating element for heating the airflow flowing to the first area through the second air supply port 511, and the high-temperature airflow flows out from the first air supply port 411 and / or the second air supply port 511 and blows to the outer surface of the drawer 2, the surface of the slide rail and the inner wall of the compartment 11, so that the high-efficiency defrosting effect can be obtained in the high-temperature environment, thereby melting the frost layer on the surfaces of the drawer 2, the slide rail and the compartment 11, ensuring the normal use of the drawer 2 and improving the refrigeration effect of the cold storage equipment.

[0058] In some embodiments of the utility model, the cold storage equipment 100 further includes heat exchange assembly 6, heat exchange assembly 6 has heat exchange chamber, heat exchange chamber has first air outlet 621 and second air outlet 622, first air supply plate 41 is defined on the first air supply channel, first air outlet 621 is communicated with first air supply channel, first air supply plate 41 is provided with first air inlet 412, both ends of first air supply channel are communicated with first air inlet 412 and first air supply port 411 respectively. Specifically, heat exchange assembly 6 includes evaporator 61, air duct cover plate 62 and fan, air duct cover plate 62 and box 1 surround heat exchange chamber, evaporator 61 is arranged in heat exchange chamber, first air outlet 621 is arranged on air duct cover plate 62, the outlet end of first air outlet 621 is communicated with the inlet end of first air supply channel, the outlet end of first air supply channel is communicated with first air supply port 411, heat exchange chamber is communicated with first air supply channel, fan can send the air in compartment 11 to evaporator 61 in heat exchange chamber and carry out cooling, and the cold air generated by evaporator 61 is blown to the inside of compartment 11 through air duct cover plate 62. First air supply port 411 can flow to the first area through the first air supply channel and carry out defrosting, and the recommended airflow temperature interval is-10 DEG C~-30 DEG C, and the higher the temperature is, the stronger the defrosting capacity is, the high-efficiency defrosting effect can be obtained in the high-temperature environment, which helps to melt the frost layer condensed on the outer side of drawer 2 and the surface of slide rail, ensures the normal drawer 2 and ensures the refrigeration effect of refrigerator. During defrosting, the larger the high-temperature airflow volume is, the more conducive to defrosting. Generally speaking, the minimum near-wall surface wind speed of the part with serious frosting is about 0.4m / s, and the setting of fan speed and the design of air port size need to consider this requirement. During defrosting, the fan gear can be raised to increase the air volume and improve the defrosting effect.

[0059] In the embodiment, the second air supply plate 51 is further defined with a second air supply channel, the second air outlet 622 is communicated with the second air supply channel, the second air supply plate 51 is provided with a second air inlet 512, and two ends of the second air supply channel are respectively communicated with the second air inlet 512 and the second air outlet 511. Specifically, the air duct cover plate 62 is further provided with the second air outlet 622, the outlet end of the second air outlet 622 is communicated with the inlet end of the second air supply channel, the outlet end of the second air supply channel is communicated with the second air outlet 511, the heat exchange chamber is communicated with the second air supply channel, the fan can transport the air in the compartment 11 to the evaporator 61 in the heat exchange chamber for cooling, and the cold air generated by the evaporator 61 is blown to the inside of the compartment 11 through the air duct cover plate 62, and the second air outlet 511 can flow the air flow with a higher temperature to the first area through the second air supply channel to remove frost.

[0060] In some embodiments of the utility model, the heat exchange chamber further has a third air outlet 623, the drawer 2 has a storage space inside, the third air outlet 623 is communicated with the storage space and is used for air supply for the storage space. The air duct cover plate 62 is further provided with the third air outlet 623, and in the embodiment, the number of the third air outlet 623 is four, and the third air outlet 623 is communicated with the storage space of the drawer 2, the air flow that does not carry out heating and has a lower temperature flows out through the third air outlet, and the safety and freshness of the food stored in the drawer 2 can be guaranteed.

[0061] In some embodiments of the utility model, the heating member includes first heating member 42 arranged in the first air supply channel and second heating member 52 arranged in the second air supply channel, first heating member 42 includes at least one of electric heating film, heating wire and resistance wire, and / or, second heating member 52 includes at least one of electric heating film, heating wire and resistance wire. In the embodiment, first heating member 42 and second heating member 52 are electric heating films, and the electric heating film can be PI (Polyimide, polyimide) electric heating film, silicone rubber electric heating film, etc. First heating member 42 is arranged in the first air supply channel of first air supply plate 41, and the electric heating film is attached to first air supply plate 41 and arranged at the position corresponding to first air outlet 411; second heating member 52 is arranged in the second air supply channel of second air supply plate 51, and the electric heating film is attached to second air supply plate 51 and arranged at the position corresponding to second air outlet 511. When defrosting, first heating member 42 heats the airflow in the first air supply channel, and the heated airflow flows out through first air outlet 411, second heating member 52 heats the airflow in the second air supply channel, and the heated airflow flows out through second air outlet 511, thereby defrosting the first area between drawer 2 and chamber 11, which can make the outside of drawer 2, the surface of the slide rail and the inner wall of chamber 11 obtain efficient defrosting effect in a high-temperature environment, help to melt the frost layer condensed on the cold surface, and ensure the refrigeration effect of the refrigerator. In other embodiments, first heating member 42 and second heating member 52 can also be arranged as electric heating wires, resistance wires, etc.

[0062] In the embodiment, the air supply device further includes a temperature detection member and a controller, the temperature detection member includes a first temperature sensor and a second temperature sensor, the first temperature sensor is arranged at a position close to first air outlet 411 for detecting the temperature of the airflow at first air outlet 411, and the second temperature sensor is arranged at a position close to second air outlet 511 for detecting the temperature of the airflow at second air outlet 511. The signal input end of the controller is electrically connected with the signal output end of the first temperature sensor and the second temperature sensor respectively, the signal output end of the controller is electrically connected with the signal input end of first heating member 42 and second heating member 52 respectively, the first temperature sensor detects the temperature of the airflow flowing out of first air outlet 411 and transmits the first detection signal to the controller, and the controller controls the start and stop of first heating member 42 according to the first detection signal, thereby controlling the temperature of the airflow flowing out of first air outlet 411. Similarly, the second temperature sensor detects the temperature of the airflow flowing out of second air outlet 511 and transmits the second detection signal to the controller, and the controller controls the start and stop of second heating member 52 according to the second detection signal, thereby controlling the temperature of the airflow flowing out of second air outlet 511.

[0063] In some embodiments of the utility model, the number of first air supply assemblies is two, two first air supply assemblies are respectively arranged on opposite two side walls of drawer 2 along the horizontal direction, and along the horizontal direction, the orthographic projection of drawer 2 on the plane where first air supply plate 41 is located is all located in the area of first air supply plate 41. Specifically, first air supply assembly is arranged between the outer side wall of drawer 2 and the side wall of compartment 11, two groups of first air supply assemblies are symmetrically arranged on the left and right sides of drawer 2 and are connected with the side wall of compartment 11, the structure of two groups of first air supply assemblies is same, and all includes first air supply plate 41 and first heating piece 42 arranged in first air supply plate 41, the cross-sectional shape of first air supply plate 41 is matched with the cross-sectional shape of the side wall of drawer 2, by respectively arranging first air supply assembly on opposite two side walls of drawer 2, it is favorable to defrosting the two side walls of drawer 2 and the slide rails on both sides, further improve defrosting effect. The orthographic projection area of drawer 2 on the horizontal direction is located in the orthographic projection area of first air supply plate 41 on the horizontal direction, that is, the four peripheral edges of drawer 2 are located in the four peripheral edges of first air supply plate 41, first air supply port 411 is located on the side of first air supply plate 41 towards drawer 2, the number of first air supply port 411 is multiple, multiple first air supply ports 411 are evenly spaced on first air supply plate 41, can make the range of outflowing heated air flow larger and more uniform, further improve the defrosting effect on the surface of drawer 2. When defrosting, the airflow of higher temperature flows out through first air supply port 411 arranged on first air supply plate 41 and flows through the outer surface of drawer 2 for defrosting, and will not flow into the interior of drawer 2, ensure the defrosting effect, and the high-temperature airflow will not affect the food in the storage space.

[0064] In some embodiments of the utility model, along the height direction of cold storage equipment 100, second air supply plate 51 is arranged above drawer 2, and along the height direction of cold storage equipment 100, the orthographic projection of drawer 2 on the plane where second air supply plate 51 is located is all located in the area of second air supply plate 51, second air supply port 511 is located on the side of second air supply plate 51 towards drawer 2 and is located on the circumferential outside of drawer 2. Specifically, please refer to Figure 1 , the height direction of cold storage equipment 100 is Figure 1In the vertical direction, the second air supply plate 51 is arranged in the compartment 11 and is above the drawer 2 in the vertical direction, the cross-sectional shape of the second air supply plate 51 and the drawer 2 is rectangular, the projection area of the drawer 2 in the vertical direction is in the projection area of the second air supply plate 51 in the vertical direction, that is, the four peripheral edges of the drawer 2 are in the four peripheral edges of the second air supply plate 51, the number of the second air supply ports 511 is multiple, the multiple second air supply ports 511 are arranged in the circumferential direction of the drawer 2, and when defrosting, the airflow with a higher temperature flows out through the second air supply ports 511 arranged on the second air supply plate 51 and flows through the outer surface of the drawer 2 to defrost, and will not flow into the drawer 2, thereby ensuring the defrosting effect and preventing the high-temperature airflow from affecting the food in the storage space.

[0065] In some embodiments of the present application, the distance between the second air supply port 511 and the outer edge of the drawer 2 is L1, wherein 4mm≤L1≤7mm. Specifically, in the horizontal direction, the distance between the multiple second air supply ports 511 and the outer edge of the drawer 2 is 4mm-7mm, for example, L1 can be 4mm, 5mm, 5.1mm, 6mm, 6.5mm, 7mm, etc. When defrosting, the airflow with a higher temperature flows out through the second air supply ports 511 arranged around the second air supply plate 51 and flows through the outer surface of the drawer 2 to defrost, and will not flow into the storage space inside the drawer 2, thereby ensuring the defrosting effect and preventing the high-temperature airflow from affecting the food in the storage space.

[0066] In the present embodiment, in the vertical direction, the distance between the lower edge of the second air supply port 511 on the side of the second air supply plate 51 close to the rear side of the drawer 2 and the lower edge of the second air inlet 512 is L2, and the value range of L2 is 18mm≤L2≤25mm. Specifically, the second air supply ports 511 on the second air supply plate 51 have different regions, which are a first air supply area close to the front side of the drawer 2, a second air supply area close to the rear side of the drawer 2, and a third air supply area close to the left and right sides of the drawer 2, the second air inlet 512 is arranged on the side of the second air supply plate 51 close to the second air supply area, the second air supply ports 511 on the first air supply area are below the second air inlet 512, and the distance L2 between the second air supply ports 511 on the first air supply area and the second air inlet 512 is 18mm-25mm, for example, L2 can be 18mm, 19mm, 20mm, 22mm, 25mm, which can prevent the airflow with a higher temperature and the airflow with a lower temperature from crossing and mixing to affect the defrosting effect.

[0067] In the embodiment, the drawer 2 comprises an upper sub-drawer 21 and a lower sub-drawer 22, and a sliding structure is arranged between the upper sub-drawer 21 and the lower sub-drawer 22, the sliding structure comprises a sliding part 91 arranged on the upper sub-drawer 21 and a sliding matching part 92 arranged on the lower sub-drawer 22, and the sliding part 91 and the sliding matching part 92 are in sliding cooperation. In the embodiment, one of the sliding part 91 and the sliding matching part 92 is arranged as a pulley 911, and the other is arranged as a sliding groove 921. Specifically, the number of the pulleys 911 is four, which are arranged at the bottom of the four corners of the upper sub-drawer 21 respectively, and the sliding grooves 921 are arranged on the two inner side walls of the lower sub-drawer 22 respectively, the sliding grooves 921 extend along the pushing and pulling direction of the drawer 2, and the sliding grooves 921 are spaced apart from the upper end surface of the side wall of the lower sub-drawer 22 by a certain distance, which is slightly larger than the outer diameter of the pulley 911, so that the upper sub-drawer 21 and the lower sub-drawer 22 are in sealing cooperation when the pulley 911 slides in the sliding groove 921, the gap between the upper sub-drawer 21 and the lower sub-drawer 22 is as small as possible, and the pushing and pulling of the drawer 2 is not affected, the high-temperature airflow flowing out of the first air outlet 411 and the second air outlet 511 is prevented from flowing into the lower sub-drawer 22 through the gap between the two drawers 2, the storage temperature of the food in the two drawers 2 is not affected, and the storage quality is ensured. The bottom of the lower sub-drawer 22 is provided with a guide rail 221, and the drawer 2 is pulled out through the guide rail 221.

[0068] In some embodiments of the utility model, the cold storage device further includes a return air outlet 7, the return air outlet 7 is arranged at the bottom of the chamber 11, and the return air outlet 7 is communicated with the heat exchange assembly 6. Specifically, the return air outlet 7 is arranged on one side close to the back of the lower sub-drawer 22 and at the bottom of the chamber 11. When defrosting, the airflow flowing out of the first air outlet 411 and the second air outlet 511 flows downward, flows through the outer surface of the drawer 2, and finally flows to the evaporator 61 through the return air outlet 7 to be cooled. By arranging the position of the return air outlet 7 close to the bottom of the lower sub-drawer 22, it can be ensured that the airflow can flow to the bottom of the lower sub-drawer 22 for sufficient defrosting, and the defrosting effect is improved.

[0069] In some embodiments of the utility model, one side of the drawer 2 facing the door body 3 is provided with a flow guide piece 8, and the flow guide piece 8 is used for guiding the airflow flowing out of the first air outlet 411 and the second air outlet 511 to the return air outlet 7. Specifically, the flow guide piece 8 comprises a flow guide baffle 81, and the flow guide baffle 81 is arranged on one side of the front of the lower sub-drawer 22. When the airflow flowing out of the first air outlet 411 and the second air outlet 511 flows downward to the lower sub-drawer 22, the airflow can be prevented from mixing with the return airflow of the lower sub-drawer 22, so that the airflow flows into the return air outlet 7 through the first area between the outer wall of the drawer 2 and the inner wall of the chamber 11.

[0070] In some embodiments of the utility model, first air supply assembly still include first heat insulation layer 43, first heat insulation layer 43 set up in first air supply plate 41 towards the one side of drawer 2, first heat insulation layer 43 on be provided with a plurality of with first air outlet 411 opposite arrangement's first through -hole 431, and / or, second air supply assembly still include second heat insulation layer 53, second heat insulation layer 53 set up in second air supply plate 51 towards the one side of drawer 2, second heat insulation layer 53 on be provided with a plurality of with second air outlet 511 opposite arrangement's second through -hole 531. Specifically, first heat insulation layer 43 includes first thermal insulation cotton, first thermal insulation cotton is attached to the one side of first air supply plate 41 towards drawer 2, by setting first heat insulation layer 43, can reduce the heat transfer of first heating element 42 inside first air supply plate 41 to the inside of drawer 2, first heat insulation layer 43 on be provided with a plurality of first through -hole 431, a plurality of first through -hole 431 with a plurality of first air outlet 411 correspondence arrangement, guarantee the airflow in first air supply channel can flow out smoothly through first air outlet 411. Second heat insulation layer 53 includes second thermal insulation cotton, second thermal insulation cotton is attached to the one side of second air supply plate 51 towards drawer 2, by setting second heat insulation layer 53, can reduce the heat transfer of second heating element 52 inside second air supply plate 51 to the inside of drawer 2, second heat insulation layer 53 on be provided with a plurality of second through -hole 531, a plurality of second through -hole 531 with a plurality of second air outlet 511 correspondence arrangement, guarantee the airflow in second air supply channel can flow out smoothly through second air outlet 511.

[0071] The cold storage device 100 of the embodiment can perform defrosting for 30 minutes after the door body 3 is closed, and the main reason for frosting in the intermediate chamber 11 is that a large amount of water vapor in the external environment enters the intermediate chamber 11 to form frost when the door body 3 is opened, and the temperature inside the intermediate chamber 11 is low, so that the water vapor enters and quickly forms frost. Therefore, it is suggested that the defrosting process is started after the door body 3 is closed, and defrosting is performed for 30 minutes to reduce the frost accumulation inside the intermediate chamber 11. The defrosting process can also be started 30 minutes before the defrosting of the evaporator 61, so that the frost is transferred to the evaporator 61 as much as possible before defrosting, thereby improving the defrosting efficiency. The refrigerator control panel can also be provided with a user self-starting defrosting function, and the user can start the defrosting program when the frost needs to be removed from the deep cold intermediate chamber 11, and exit the defrosting program when the frost does not need to be removed. The defrosting process can also be started according to the amount of water vapor entering.

[0072] The above is only a preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the utility model, which should be covered within the protection scope of the utility model. Therefore, the protection scope of the utility model should be subject to the protection scope of the claims.

Claims

1. A cold storage device, characterized by, The cold storage device comprises: a cabinet having a chamber provided with an opening; a drawer provided in the chamber in a pullable manner, a gap between the drawer and the chamber being a first area; a first air supply assembly provided between an outer sidewall of the drawer and a sidewall of the chamber, the first air supply assembly comprising a first air supply plate having a first air supply opening, the first air supply opening being in communication with the first area; a second air supply assembly provided above the drawer, the second air supply assembly comprising a second air supply plate having a second air supply opening, the second air supply opening being in communication with the first area; a heating element provided on the first air supply plate for heating air flow flowing to the first area through the first air supply opening, and / or a heating element provided on the second air supply plate for heating air flow flowing to the first area through the second air supply opening.

2. The cold storage device according to claim 1, characterized by The cold storage device further comprises a heat exchange assembly having a heat exchange chamber, the heat exchange chamber having a first air outlet and a second air outlet; a first air supply channel is defined on the first air supply plate, the first air outlet is in communication with the first air supply channel, a first air inlet is provided on the first air supply plate, and two ends of the first air supply channel are in communication with the first air inlet and the first air outlet respectively; and / or a second air supply channel is defined on the second air supply plate, the second air outlet is in communication with the second air supply channel, a second air inlet is provided on the second air supply plate, and two ends of the second air supply channel are in communication with the second air inlet and the second air outlet respectively.

3. The cold storage device according to claim 2, characterized by The heat exchange chamber further has a third air outlet, and the drawer has an object storage space, the third air outlet being in communication with the object storage space.

4. The cold storage device according to claim 2, characterized by The heat exchange assembly comprises an evaporator and an air duct cover plate, the air duct cover plate and the cabinet surrounding the heat exchange chamber, and the evaporator being arranged in the heat exchange chamber.

5. The cold storage device according to any one of claims 1 to 4, characterized by, The number of the first air supply assemblies is two, the two first air supply assemblies are arranged on opposite sidewalls of the drawer in a horizontal direction, and along the horizontal direction, the projection of the drawer on the plane where the first air supply plates are located is entirely located in the area of the first air supply plates.

6. The cold storage device according to any one of claims 1 to 4, characterized by, Along the height direction of the cold storage device, the second air supply plate is arranged above the drawer, and along the height direction of the cold storage device, the projection of the drawer on the plane where the second air supply plate is located is entirely located in the area of the second air supply plate, the second air supply opening is located on the side of the second air supply plate facing the drawer and is located on the circumferential outer side of the drawer.

7. The cold storage device according to any one of claims 1 to 4, characterized by, The distance between the second air supply opening and the outer edge of the drawer is L1, wherein 4mm≤L1≤7mm.

8. The cold storage device according to any one of claims 2 to 4, characterized by, The cold storage device further comprises an air return opening, the air return opening being provided at the bottom of the chamber and being in communication with the heat exchange assembly.

9. The cold storage device according to claim 8, characterized by The cold storage device further comprises a door body, and a flow guide member is arranged on the side of the drawer facing the door body, the flow guide member being used for guiding the air flow out of the first air supply opening and the second air supply opening to the air return opening.

10. The cold storage device according to any one of claims 1 to 4, characterized by, The first air supply assembly further comprises a first heat insulation layer arranged on a side of the first air supply plate facing the drawer, and a plurality of first through holes are arranged on the first heat insulation layer and opposite to the first air supply port; and / or the second air supply assembly further comprises a second heat insulation layer arranged on a side of the second air supply plate facing the drawer, and a plurality of second through holes are arranged on the second heat insulation layer and opposite to the second air supply port.

Images