Drawer and refrigeration equipment

Abstract

The utility model discloses a drawer and refrigeration equipment, the drawer comprises a shell and a first cooling layer, and the shell comprises a side wall, a bottom wall and a containing cavity defined by the side wall and the bottom wall; the first cooling layer is located on the side, facing the containing cavity, of the bottom wall, the first cooling layer comprises a first cold storage material layer and a first heat conduction plate which are arranged in a stacked mode, the first heat conduction plate is used for making contact with food materials, the first cold storage material layer is arranged on the side, facing the bottom wall, of the first heat conduction plate, and the first cold storage material layer comprises a cold storage material bag; the cold storage material bag is used for absorbing heat, transmitted from the first heat conduction plate, of the food materials. According to the drawer provided by the invention, the heat exchange speed between the drawer and food materials can be increased, so that the fresh-keeping performance of the drawer is improved, and meanwhile, the drawer is simple in preparation process and relatively low in preparation cost.

Description

Technical Field

[0001] This application belongs to the field of household appliance technology, and particularly relates to a drawer and a refrigeration device. Background Technology

[0002] As user demands increase, refrigeration equipment is becoming increasingly sophisticated, leading to the development of multi-functional drawers. These drawers come in various forms, including crisper drawers and defrost drawers. While the refrigeration temperature of refrigeration equipment is generally 4°C, some foods require temperatures below 0°C for optimal preservation. Therefore, some refrigeration systems include crisper drawers with temperatures below 0°C for food preservation. Some foods need to be defrosted in defrost drawers to maintain their freshness during the thawing process. However, current multi-functional drawers often have poor thermal conductivity, resulting in slow heat exchange within the drawer and significantly impacting its performance, as well as the overall performance of the refrigeration equipment. Utility Model Content

[0003] The purpose of this application is to at least solve the problem of slow heat exchange speed inside the drawer. This purpose is achieved through the following technical solution:

[0004] The first aspect of this application proposes a drawer, comprising:

[0005] A housing, the housing including side walls, a bottom wall, and a receiving cavity formed by the side walls and the bottom wall, the receiving cavity being used to hold food ingredients;

[0006] A first cooling layer is located on the side of the bottom wall facing the receiving cavity. The first cooling layer includes a first cold storage material layer and a first temperature conducting plate stacked together. The first temperature conducting plate is used to contact the food. The first cold storage material layer is disposed on the side of the first temperature conducting plate facing the bottom wall. The first cold storage material layer includes a cold storage material pack, which is used to absorb the heat of the food transferred from the first temperature conducting plate.

[0007] The drawer provided in this application includes a shell and a first cooling layer. The shell includes side walls, a bottom wall, and a receiving cavity, which is formed by the side walls and the bottom wall and is used to hold food. The first cooling layer is used to improve the heat exchange rate between the food and the drawer. Specifically, the first cooling layer is located on the side of the bottom wall facing the receiving cavity. The first cooling layer includes a first cold storage material layer and a first temperature-conducting plate. The first cold storage material layer is located on the side of the bottom wall facing the receiving cavity, and the first temperature-conducting plate is located on the side of the first cold storage material layer facing the receiving cavity. The first temperature-conducting plate is used to contact the food, that is, when the food is placed in the receiving cavity, it comes into contact with the first temperature-conducting plate, and the first temperature-conducting plate is used to realize heat exchange between the drawer and the food. The first cold storage material layer is used to store cold to improve the energy utilization rate inside the drawer and accelerate the heat exchange rate with the food. The first cold storage material layer includes a cold storage material package. This package absorbs heat from the food transferred from the first temperature-conducting plate. Encasing the cold storage material forms the package, thus achieving a seal. This facilitates drawer fabrication, reduces the drawer's sealing requirements, and lowers manufacturing costs. This drawer improves the heat exchange rate between the drawer and the food, enhancing its preservation performance. Furthermore, the drawer's fabrication process is simple and cost-effective.

[0008] In some embodiments of this application, a limiting protrusion is formed on the sidewall, the first temperature-conducting plate is located between the limiting protrusion and the cold storage material pack, and the limiting protrusion and the bottom wall have a first distance, the first distance being greater than the thickness of one cold storage material pack and less than the thickness of two cold storage material packs.

[0009] In some embodiments of this application, the drawer further includes a first insulation layer located between the bottom wall and the first cold storage material layer.

[0010] In some embodiments of this application, the first insulation layer is formed with a plurality of grooves, each groove being used to accommodate at least one of the cold storage material packages.

[0011] In some embodiments of this application, the first cooling layer further includes a second temperature-conducting plate, which is located between the first cold storage material layer and the bottom wall, and is fixedly connected to the side wall.

[0012] In some embodiments of this application, the drawer further includes a plurality of temperature-conducting connecting plates, which are connected between the first temperature-conducting plate and the second temperature-conducting plate, and cooperate with the first temperature-conducting plate and the second temperature-conducting plate to form a plurality of first accommodating spaces, each of which contains at least one of the cold storage material packages.

[0013] In some embodiments of this application, the drawer is used to preserve the food ingredients, and the cold storage material package includes a flexible package and a cold storage material located inside the flexible package. The freezing point of the cold storage material is T1, -3℃≤T1≤0℃. Alternatively, the drawer is used to thaw the food ingredients, and the freezing point of the cold storage material is T2, 0℃<T2≤8℃.

[0014] In some embodiments of this application, the drawer further includes a second cooling layer located on the side of the sidewall facing the receiving cavity. The second cooling layer includes a third temperature-conducting plate, a second cold-storage material layer, and a fourth temperature-conducting plate stacked sequentially. A plurality of second receiving spaces are formed between the third temperature-conducting plate and the fourth temperature-conducting plate. The second cold-storage material layer includes a plurality of cold-storage material packages, and each second receiving space contains at least one of the cold-storage material packages.

[0015] In some embodiments of this application, the drawer further includes a second insulation layer located on the side surface of the sidewall facing the receiving cavity.

[0016] In some embodiments of this application, the drawer further includes a cover plate, which is disposed opposite to the bottom wall, and the cover plate is provided with an air duct and an air supply port and an air return port communicating with the air duct.

[0017] In some embodiments of this application, the drawer further includes a temperature sensor disposed on the side of the cover facing the receiving cavity.

[0018] The second aspect of this application also provides a refrigeration device, including any of the drawers described in the first aspect of this application. Attached Figure Description

[0019] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0020] Figure 1 This is a schematic diagram of the structure of a drawer provided in an embodiment of this application;

[0021] Figure 2 This is a cross-sectional schematic diagram of the first type of drawer provided in this application embodiment, perpendicular to the drawer's pull-out direction;

[0022] Figure 3 This is a cross-sectional schematic diagram of the second type of drawer provided in this application embodiment, perpendicular to the drawer's pull-out direction;

[0023] Figure 4 This is a perspective view of the bottom wall of a drawer provided in an embodiment of this application;

[0024] Figure 5 This is a cross-sectional schematic diagram of the second type of drawer provided in this application embodiment, perpendicular to the drawer's pull-out direction;

[0025] Figure 6 This is a cooling curve of the food in the drawer from 25°C to 0°C provided in the embodiments of this application;

[0026] Figure 7 This is a cross-sectional schematic diagram of a cold storage material package provided in an embodiment of this application;

[0027] Figure 8 This is a cross-sectional schematic diagram of another drawer provided in an embodiment of this application, perpendicular to the drawer's pull-out direction;

[0028] Figure 9 This is a schematic diagram of another drawer structure provided in an embodiment of this application;

[0029] Figure 10 yes Figure 9 A structural diagram of the drawer cover is provided.

[0030] Figure 11 This is a schematic diagram of the structure of a refrigeration device provided in an embodiment of this application.

[0031] The attached figures are labeled as follows:

[0032] 1. Drawer; 11. Shell; 111. Side wall; 1111. Limiting protrusion; 112. Bottom wall; 113. Receiving cavity; 12. First cooling layer; 121. First cold storage material layer; 1211. Cold storage material package; 1212. Flexible package; 1213. Cold storage material; 122. First temperature guiding plate; 123. Second temperature guiding plate; 13. First insulation layer; 131. Groove; 14. Temperature guiding connecting plate; 141. First receiving space; 15. Second cooling layer; 151. Third temperature guiding plate; 152. Second cold storage material layer; 153. Fourth temperature guiding plate; 154. Second receiving space; 155. Connecting plate; 16. Second insulation layer; 17. Cover plate; 18. Temperature sensor; 2. Refrigeration equipment. Detailed Implementation

[0033] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0034] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “” used herein may also indicate the inclusion of the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated, unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0035] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0036] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "over," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure is flipped, an element described as "below other elements or features" or "below other elements or features" would subsequently be oriented as "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0037] Research has found that the slow heat exchange rate within the drawers of refrigeration equipment has the following specific impacts: The freezing speed in the crisper drawer is slow, thus affecting the freshness of the food. The defrosting drawer also has a slow defrosting speed, failing to meet user experience requirements. Specifically, the crisper drawer uses air cooling, supplying cold air into its storage space to lower the temperature. This results in a slow cooling rate and significant temperature fluctuations, especially for large pieces of food, where heat cannot easily penetrate to the center. Sometimes, the cooling time can exceed 48 hours, easily leading to spoilage and severely impacting the overall performance of the refrigeration equipment and the user experience. The defrosting drawer maintains a relatively low temperature above freezing to preserve food during the defrosting process. However, due to the slow heat exchange rate, the inside of the food may remain frozen for an extended period while the outside thaws, resulting in a long defrosting time and affecting the freshness of the food. Therefore, this application provides a drawer and a refrigeration device to improve the heat exchange rate inside the drawer, thereby improving the preservation performance.

[0038] like Figure 1 and Figure 2 As shown, Figure 1 A schematic diagram of the structure of a drawer provided in this application; Figure 2 for Figure 1 A cross-sectional view of the drawer perpendicular to the drawer's pull-out direction x. According to an embodiment of this application, a drawer 1 is provided, comprising a housing 11 and a first cooling layer 12. The housing 11 includes a side wall 111, a bottom wall 112, and a receiving cavity 113 formed by the side wall 111 and the bottom wall 112, the receiving cavity 113 being used to receive food. The first cooling layer 12 is located on the side of the bottom wall 112 facing the receiving cavity 113. The first cooling layer 12 includes a first cold-storage material layer 121 and a first temperature-conducting plate 122 stacked together. The first temperature-conducting plate 122 is used to contact the food. The first cold-storage material layer 121 is disposed on the side of the first temperature-conducting plate 122 facing the bottom wall 112. The first cold-storage material layer 121 includes a cold-storage material pack 1211, which is used to absorb heat from the food transferred from the first temperature-conducting plate 122.

[0039] The drawer 1 provided in this application includes a shell 11 and a first cooling layer 12. The shell 11 includes a side wall 111, a bottom wall 112, and a receiving cavity 113. The receiving cavity 113 is formed by the side wall 111 and the bottom wall 112 and is used to receive food. The first cooling layer 12 is used to improve the heat exchange rate between the food and the drawer 1. Specifically, the first cooling layer 12 is located on the side of the bottom wall 112 facing the receiving cavity 113. The first cooling layer 12 includes a first cold storage material layer 121 and a first temperature conducting plate 122. The first cold storage material layer 121 is located on the side of the bottom wall 112 facing the receiving cavity 113, and the first temperature conducting plate 122 is located on the side of the first cold storage material layer 121 facing the receiving cavity 113. The first temperature conducting plate 122 is used to contact the food, that is, when the food is placed in the receiving cavity 113, it contacts the first temperature conducting plate 122. The first temperature conducting plate 122 is used to realize heat exchange between the drawer 1 and the food. The first cold storage material layer 121 is used for cold storage to improve the energy utilization rate inside drawer 1 and accelerate the heat exchange rate with food. The first cold storage material layer 121 includes a cold storage material package 1211, which absorbs the heat transferred from the food by the first heat-conducting plate 122. Wrapping the cold storage material 1213 forms the cold storage material package 1211, thus achieving sealing of the cold storage material 1213. This facilitates the preparation of drawer 1, reduces the sealing requirements of drawer 1, and lowers the preparation cost of drawer 1. This drawer 1 can improve the heat exchange rate between drawer 1 and food, thereby improving the preservation performance of drawer 1. Furthermore, the preparation process of this drawer 1 is simple and the preparation cost is low.

[0040] In the above embodiments, the first cold storage material layer 121 includes a plurality of cold storage material packages 1211. By arranging the plurality of cold storage material packages 1211 along the plane direction of the first temperature-conducting plate 122, the contact area between the cold storage material packages 1211 and the outside world can be increased, and a uniform cooling effect can be achieved within the range of the first cooling layer 12.

[0041] In the above embodiments, the first cold storage material layer 121 can be in direct or indirect contact with the first temperature-conducting plate 122. During the process of cold air entering the drawer 1, the first cold storage material layer 121 can be used to store cold air, so that when no more cold air enters the drawer 1, the temperature inside the drawer 1 can be maintained through the first cold storage material layer 121. The temperature of the first cold storage material layer 121 can be transferred to the first temperature-conducting plate 122 through air, or heat can be transferred by direct contact between the first cold storage material layer 121 and the first temperature-conducting plate 122, or heat can be transferred between the two by indirect contact between the first cold storage material layer 121 and the first temperature-conducting plate 122 through other components.

[0042] Specifically, when drawer 1 is used for freezing and preserving food, the temperature inside drawer 1 is low, less than or equal to 0°C. Room-temperature food is placed on the first temperature-conducting plate 122 inside drawer 1. The heat from the room-temperature food is transferred downwards to the cold-storage material pack 1211 via heat conduction. The cold-storage material pack 1211 absorbs the heat and melts, preventing a significant temperature rise inside drawer 1. This achieves the goal of rapidly cooling the food while minimizing overall temperature fluctuations in drawer 1. When the temperature fluctuations inside drawer 1 are small, the food does not repeatedly switch between frozen and thawed states within drawer 1, thus reducing the loss of juices and improving the sensory effects and edible quality of the food.

[0043] When drawer 1 is used to defrost food, the temperature inside drawer 1 is above 0°C. Frozen food is placed on the first temperature-conducting plate 122 inside drawer 1. The frozen food absorbs heat from inside drawer 1, specifically through contact with the first temperature-conducting plate 122, absorbing heat from the cold-storage material pack 1211. This heat is then transferred to the frozen food via thermal conduction, thus achieving defrosting. During the heat release process, the cold-storage material pack 1211 maintains a constant temperature for a period of time due to the material's properties, continuously providing heat to the food, thereby enabling rapid defrosting. Simultaneously, the presence of the cold-storage material pack 1211 helps maintain the food's temperature from becoming too high, achieving low-temperature defrosting and helping to preserve the food's freshness.

[0044] In one feasible implementation, such as Figure 2 As shown, a limiting protrusion 1111 is formed on the side wall 111. The first temperature-conducting plate 122 is located between the limiting protrusion 1111 and the cold storage material pack 1211. The limiting protrusion 1111 and the bottom wall 112 have a first distance. The first distance is greater than the thickness of one cold storage material pack 1211 and less than the thickness of two cold storage material packs 1211. The first temperature-conducting plate 122 is in contact with the cold storage material pack 1211.

[0045] In the above embodiment, the surface of the first temperature-conducting plate 122 facing the first cold storage material layer 121 is in direct contact with the cold storage material package 1211. Specifically, in order to maintain the position of the cold storage material package 1211 and the position of the first temperature-conducting plate 122 perpendicular to the bottom wall 112 during the process of pulling the drawer 1 along the pull direction x, a limiting protrusion 1111 is provided on the side wall 111. The limiting protrusion 1111 is located on the side of the first temperature-conducting plate 122 away from the bottom wall 112, thereby limiting the position of the first temperature-conducting plate 122 and making it difficult for it to fall out of the receiving cavity 113. Meanwhile, the distance between the limiting protrusion 1111 and the bottom wall 112 is greater than the thickness of the cold storage material pack 1211, thereby preventing the cold storage material pack 1211 from being placed between the bottom wall 112 and the first temperature guiding plate 122. Furthermore, by making the distance between the limiting protrusion 1111 and the bottom wall 112 less than the thickness of two cold storage material packs 1211, it is possible to prevent the cold storage material pack 1211 from shifting during the process of pulling out the drawer 1, which would cause adjacent cold storage material packs 1211 to be stacked on top of each other, thus affecting the use effect and user experience.

[0046] In one feasible implementation, such as Figure 3 As shown, drawer 1 also includes a first insulation layer 13, which is located between the bottom wall 112 and the first cold storage material layer 121.

[0047] In the above embodiment, a first heat insulation layer 13 is also provided between the bottom wall 112 of the drawer 1 and the first cooling layer 12 to achieve heat insulation of the receiving cavity 113, so as to further reduce the temperature fluctuation inside the receiving cavity 113.

[0048] Specifically, the first insulation layer 13 is disposed on the side of the bottom wall 112 facing the receiving cavity 113, in order to prevent the temperature of the freezer compartment adjacent to the bottom wall 112 from becoming too cold and affecting the temperature inside the drawer 1.

[0049] Specifically, the material of the first insulation layer 13 includes foam, or the first insulation layer 13 includes a sealing layer, and a vacuum interlayer is formed between the sealing layer and the bottom wall 112.

[0050] In one feasible implementation, such as Figure 3 As shown, the first insulation layer 13 has a plurality of grooves 131, each groove 131 being used to accommodate at least one cold storage material package 1211.

[0051] In the above embodiment, by forming a groove 131 in the first insulation layer 13 to limit the position of the cold storage material pack 1211, the cold storage material pack 1211 can be limited in the direction parallel to the bottom wall 112, which helps to reduce the position movement of the cold storage material pack 1211 during the drawer 1's pull-out process, improves the uniformity of the distribution of the cold storage material pack 1211, and enhances the user experience during the pull-out process.

[0052] In one feasible implementation, such as Figure 4 and Figure 5 As shown, the first cooling layer 12 also includes a second temperature-conducting plate 123, which is located between the first cold storage material layer 121 and the bottom wall 112, and is fixedly connected to the side wall 111.

[0053] In the above embodiment, the first cooling layer 12 further includes a second temperature-conducting plate 123. The first cold storage material layer 121 is disposed in contact with the second temperature-conducting plate 123, thereby reducing the temperature difference of the first cold storage material layer 121 in the plane parallel to the bottom wall 112, so as to further improve the temperature fluctuation inside the drawer 1.

[0054] In the above embodiment, drawer 1 further includes a first insulation layer 13, which is located between the bottom wall 112 and the second heat-conducting plate 123. The first insulation layer 13 contacts the second heat-conducting plate 123 and the bottom wall 112 respectively. The surfaces of the first insulation layer 13 facing the second heat-conducting plate 123 and the bottom wall 112 are all flat to increase the contact area with the second heat-conducting plate 123 and the bottom wall 112, thereby achieving a better insulation effect.

[0055] In one feasible implementation, such as Figure 4 and Figure 5 As shown, drawer 1 also includes multiple temperature-conducting connecting plates 14, which are connected between the first temperature-conducting plate 122 and the second temperature-conducting plate 123, and cooperate with the first temperature-conducting plate 122 and the second temperature-conducting plate 123 to form multiple first accommodating spaces 141, each of which contains at least one cold storage material package 1211.

[0056] Specifically, the temperature-conducting connecting plate 14 is fixed to at least the second temperature-conducting plate 123, and the temperature-conducting connecting plate 14 is perpendicular to the second temperature-conducting plate 123. The temperature-conducting connecting plate 14 encloses and forms a plurality of first accommodating spaces 141. Each first accommodating space 141 is provided with a cold storage material pack 1211, and the cold storage material pack 1211 is in contact with the temperature-conducting connecting plate 14.

[0057] In the above embodiment, the cold storage material pack 1211 is in direct contact with the second temperature-conducting plate 123, and the cold storage material pack 1211 cools the second temperature-conducting plate 123. The connection between the first temperature-conducting plate 122 and the second temperature-conducting plate 123 can be achieved by setting the temperature-conducting connecting plate 14, thereby realizing the cooling of the first temperature-conducting plate 122 by the cold storage material pack 1211. Simultaneously, the cold storage material pack 1211 can also be in direct contact with the temperature-conducting connecting plate 14 to further enhance the cooling effect on the first temperature-conducting plate 122. Specifically, the food transfers temperature to the first temperature-conducting plate 122, then to the second temperature-conducting plate 123 through the temperature-conducting connecting plate 14, and finally to the cold storage material pack 1211, which is in close contact with the second temperature-conducting plate 123, effectively preventing the slow cooling speed caused by poor contact between the cold storage material pack 1211 and the first temperature-conducting plate 122.

[0058] In the above embodiment, the temperature-conducting connecting plate 14 is perpendicular to the second temperature-conducting plate 123. The temperature-conducting connecting plate 14 includes a first end close to the second temperature-conducting plate 123 and a second end away from the second temperature-conducting plate 123. The connection of the temperature-conducting connecting plate 14 between the first temperature-conducting plate 122 and the second temperature-conducting plate 123 means that the first end of the temperature-conducting connecting plate 14 is connected to the second temperature-conducting plate 123, and the second end of the temperature-conducting connecting plate 14 is connected to the first temperature-conducting plate 122. Specifically, the first end of the temperature-conducting connecting plate 14 is fixedly connected to the second temperature-conducting plate 123, and the second end of the temperature-conducting connecting plate 14 is connected to the first temperature-conducting plate 122 through abutment or fixed connection.

[0059] In the above embodiments, the heat-conducting connecting plate 14 encloses and forms a plurality of first accommodating spaces 141. The first accommodating spaces 141 are used to limit the position of the cold storage material package 1211. The first accommodating spaces 141 and the cold storage material package 1211 can correspond one-to-one, thereby further improving the accuracy of limiting the position of the cold storage material package 1211.

[0060] In the above embodiments, the shape of the orthographic projection of the sidewall 111 of the first accommodating space 141 on the sidewall 111 can be rectangular or hexagonal, so as to facilitate preparation and to facilitate splicing of adjacent second accommodating spaces.

[0061] Embodiment 1 of this application provides a drawer 1, which includes a shell 11, a first cooling layer 12, and a first heat insulation layer 13. The first cooling layer 12 includes a second temperature-conducting plate 123, a first cold storage material layer 121, and a first temperature-conducting plate 122 arranged sequentially from the outside of the receiving cavity 113 into the receiving cavity 113. The first temperature-conducting plate 122 and the second temperature-conducting plate 123 are connected by a temperature-conducting connecting plate 14, which can effectively reduce the temperature fluctuation inside the drawer 1. Specifically, the comparative example is a drawer 1 in the prior art. Figure 6 The dashed line in the middle shows the cooling curve of the food in drawer 1 provided in the comparative example, from 25°C to 0°C. Figure 6The solid line shows the cooling curve of the food in drawer 1 provided in Embodiment 1 of this application, from 25°C to 0°C. Figure 6 It can be seen that drawer 1 in Example 1 has a faster cooling rate. It takes about 45 hours for drawer 1 in the comparative example to cool down from 25°C to 0°C, while drawer 1 in Example 1 only takes 3.5 hours. It has a higher energy utilization rate and is more conducive to food preservation.

[0062] Table 1 shows the extreme values, average values, and extreme value differences of temperature fluctuations in drawer 1 provided in the comparative example, as well as the extreme values, average values, and extreme value differences of temperature fluctuations in drawer 1 provided in Embodiment 1 of this application.

[0063] As can be seen from Table 1, the temperature fluctuation inside drawer 1 provided in Embodiment 1 of this application is smaller. Due to the effect of the cold storage material package 1211, there is almost no temperature fluctuation inside drawer 1 provided in Embodiment 1 of this application. At the same time, the average temperature is lower, which avoids repeated freezing and thawing of food, helps to extend the shelf life of food and maintain the sensory quality of food.

[0064] average value Maximum value Minimum value Difference Comparative temperature fluctuation (°C) 0.7 1.2 -0.5 1.7 Example 1: Temperature Fluctuation (°C) -0.9 -0.9 -0.9 0

[0065] Table 1: Comparison of extreme values, average values, and extreme value differences of temperature fluctuations inside the drawer in Example 1 and the comparative example.

[0066] In one feasible implementation, such as Figure 7 As shown, the cold storage material package 1211 includes a flexible package 1212 and a cold storage material 1213 located within the flexible package 1212.

[0067] Specifically, the cold storage material package 1211 includes a flexible package 1212, which allows for more thorough contact between the cold storage material package 1211 and the second temperature-conducting plate 123 and the temperature-conducting connecting plate 14.

[0068] In one feasible implementation, drawer 1 is used to preserve food, and the freezing point of the cold storage material 1213 is T1, -3℃≤T1≤0℃; or, drawer 1 is used to thaw food, and the freezing point of the cold storage material 1213 is T2, 0℃<T2≤8℃. In the above implementation, when drawer 1 is a preservation drawer 1, the cold storage material package 1211 uses the cold storage material 1213 with a freezing point of T1; when drawer 1 is a thawing drawer 1, the cold storage material package 1211 uses the cold storage material 1213 with a freezing point of T2.

[0069] Specifically, the cold storage material 1213 may include an aqueous solution of sodium chloride containing poly(N-vinylacetamide) and sodium borate.

[0070] In one feasible implementation, such as Figure 8As shown, drawer 1 also includes a second cooling layer 15, which is located on the side of side wall 111 facing the receiving cavity 113. The second cooling layer 15 includes a third temperature-conducting plate 151, a second cold storage material layer 152 and a fourth temperature-conducting plate 153 stacked in sequence. A plurality of second receiving spaces 154 are formed between the third temperature-conducting plate 151 and the fourth temperature-conducting plate 153. The second cold storage material layer 152 includes a plurality of cold storage material packages 1211, and each second receiving space 154 contains at least one cold storage material package 1211.

[0071] In the above embodiment, to further improve the heat exchange rate between drawer 1 and food, a second cooling layer 15 can be provided on the side wall 111 of drawer 1 facing the receiving cavity 113. The second cooling layer 15 includes a third temperature-conducting plate 151, a second cold storage material layer 152, and a fourth temperature-conducting plate 153 arranged sequentially from the outside of the receiving cavity 113 to the inside of the receiving cavity 113. The third temperature-conducting plate 151 and the fourth temperature-conducting plate 153 are connected by a connecting plate 155 with a heat-conducting function to form a plurality of second receiving spaces 154. The second receiving spaces 154 are used to limit the cold storage material pack 1211, and the cold storage material pack 1211 corresponds to the second receiving space 154 one by one. The cold storage material pack 1211 contacts the connecting plate 155 below and the third temperature-conducting plate 151 and the fourth temperature-conducting plate 153 on both sides to improve the heat exchange rate.

[0072] When the food comes into contact with the second cooling layer 15, the heat exchange rate between the food and the second cooling layer 15 can be further increased, thereby increasing the heat exchange rate between the drawer 1 and the food, thus achieving freshness preservation.

[0073] Specifically, the materials of the first thermal conductive plate 122, the second thermal conductive plate 123, the third thermal conductive plate 151, the fourth thermal conductive plate 153, the thermal conductive connecting plate 14, and the connecting plate may include metal. Metal has high thermal conductivity, high strength, is easy to manufacture, and has low cost.

[0074] Specifically, the materials of the first temperature-conducting plate 122, the second temperature-conducting plate 123, the third temperature-conducting plate 151, the fourth temperature-conducting plate 153, the temperature-conducting connecting plate 14, and the connecting plate may include stainless steel or aluminum.

[0075] Specifically, the first temperature-conducting plate 122 and the shell 11 can be connected by insert injection molding process, and the shell 11 can be made of plastic. The temperature-conducting connecting plate 14 can be welded to the second temperature-conducting plate 123, and the connecting plate can be welded to the third temperature-conducting plate 151 and the fourth temperature-conducting plate 153.

[0076] In the above embodiments, the shape of the orthographic projection of the sidewall 111 of the second accommodating space 154 on the sidewall 111 can be rectangular or hexagonal, so as to facilitate preparation and to facilitate the splicing of adjacent second accommodating spaces 154.

[0077] In one feasible implementation, such as Figure 8 As shown, drawer 1 also includes a second insulation layer 16, which is located on the side surface of side wall 111 facing the receiving cavity 113.

[0078] In the above embodiment, a second heat insulation layer 16 can be provided on the side of the side wall 111 facing the receiving cavity 113 to further reduce the temperature fluctuation inside the drawer 1.

[0079] In one feasible implementation, the second cooling layer 15 and the second insulation layer 16 may be provided individually or simultaneously.

[0080] In one feasible implementation, such as Figure 9 and Figure 10 As shown, drawer 1 also includes a cover plate 17, which is disposed opposite to the bottom wall 112. The cover plate 17 is provided with an air duct and an air supply port and an air return port connected to the air duct.

[0081] In the above embodiments, the cavity 113 can be sealed by providing a cover plate 17 to achieve heat preservation and space isolation.

[0082] In one possible implementation, drawer 1 further includes a temperature sensor 18 disposed on the side of cover 17 facing the receiving cavity 113.

[0083] In the above embodiment, by setting a temperature sensor 18 on the side of the cover plate 17 facing the receiving cavity 113, the temperature inside the receiving cavity 113 can be monitored. When the temperature is higher than the set temperature, the air outlet is opened so that cold air can enter the receiving cavity 113 to cool the food and cold storage material pack 1211 inside the receiving cavity 113. When the temperature is lower than the set temperature, the air outlet is closed and the air supply stops.

[0084] The temperature sensor 18 can also be disposed on the side of the housing portion facing the receiving cavity. Specifically, it can be located on the side of the first cooling layer facing the receiving cavity, or on the side wall facing the receiving cavity, or on the side of the second cooling layer facing the receiving cavity, etc.

[0085] This application also provides a refrigeration device 2, such as... Figure 11 As shown, it includes any one of the drawers 1 provided in the above embodiments.

[0086] Specifically, the refrigeration device 2 may include one drawer 1 or multiple drawers 1, and the multiple drawers 1 may include a fresh-keeping drawer 1 and / or a defrosting drawer 1.

[0087] Specifically, the refrigeration equipment 2 includes a cabinet and a refrigeration system. The cabinet contains a refrigerator compartment and a freezer compartment. The refrigeration system is used to cool the refrigerator and freezer compartments. Drawer 1 can be installed in the refrigerator compartment. The refrigeration system includes a compressor, a condenser, a freezing evaporator, and a refrigerator evaporator connected in series via refrigerant piping. The refrigerator evaporator is fixed to the side of the refrigerator compartment facing away from the refrigerator compartment, and the freezing evaporator is fixed to the side of the freezer compartment facing away from the freezer compartment. The temperature of drawer 1 can be controlled by controlling the operation of the refrigerator evaporator and by controlling the opening and closing of the air vents.

[0088] In the refrigeration device 2 provided in this application, the heat exchange rate between the drawer 1 and the food is relatively fast, thereby improving the preservation performance of the refrigeration device 2 and thus helping to improve the user experience.

[0089] Specifically, the refrigeration device 2 can be a refrigerator.

[0090] The above are merely preferred embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A drawer, characterized in that, include: A housing, the housing including side walls, a bottom wall, and a receiving cavity formed by the side walls and the bottom wall, the receiving cavity being used to hold food ingredients; A first cooling layer is located on the side of the bottom wall facing the receiving cavity. The first cooling layer includes a first cold storage material layer and a first temperature conducting plate stacked together. The first temperature conducting plate is used to contact the food. The first cold storage material layer is disposed on the side of the first temperature conducting plate facing the bottom wall. The first cold storage material layer includes a cold storage material pack, which is used to absorb the heat of the food transferred from the first temperature conducting plate.

2. The drawer according to claim 1, characterized in that, A limiting protrusion is formed on the side wall, and the first temperature-conducting plate is located between the limiting protrusion and the cold storage material pack. There is a first distance between the limiting protrusion and the bottom wall. The first distance is greater than the thickness of one cold storage material pack and less than the thickness of two cold storage material packs.

3. The drawer according to claim 1, characterized in that, The drawer also includes a first insulation layer, which is located between the bottom wall and the first cold storage material layer.

4. The drawer according to claim 3, characterized in that, The first insulation layer has a plurality of grooves, each groove being used to accommodate at least one of the cold storage material packages.

5. The drawer according to claim 1, characterized in that, The first cooling layer further includes a second temperature-conducting plate, which is located between the first cold storage material layer and the bottom wall, and is fixedly connected to the side wall.

6. The drawer according to claim 5, characterized in that, The drawer also includes multiple temperature-conducting connecting plates, which are connected between the first temperature-conducting plate and the second temperature-conducting plate, and cooperate with the first temperature-conducting plate and the second temperature-conducting plate to form multiple first accommodating spaces, each of which contains at least one of the cold storage material packages.

7. The drawer according to claim 1, characterized in that, The cold storage material package includes a flexible package and cold storage material located within the flexible package.

8. The drawer according to claim 7, characterized in that, The drawer is used to preserve the food ingredients, and the freezing point of the cold storage material is T1, -3℃≤T1≤0℃; or, the drawer is used to thaw the food ingredients, and the freezing point of the cold storage material is T2, 0℃<T2≤8℃.

9. The drawer according to claim 1, characterized in that, The drawer further includes a second cooling layer located on the side of the sidewall facing the receiving cavity. The second cooling layer includes a third temperature-conducting plate, a second cold-storage material layer, and a fourth temperature-conducting plate stacked in sequence. A plurality of second receiving spaces are formed between the third temperature-conducting plate and the fourth temperature-conducting plate. The second cold-storage material layer includes a plurality of cold-storage material packages, and each second receiving space contains at least one of the cold-storage material packages.

10. The drawer according to claim 1 or 9, characterized in that, The drawer also includes a second insulation layer located on the side wall surface facing the receiving cavity.

11. The drawer according to claim 1, characterized in that, The drawer also includes a cover plate, which is disposed opposite to the bottom wall. The cover plate is provided with an air duct and an air supply vent and an air return vent that are connected to the air duct.

12. The drawer according to claim 11, characterized in that, The drawer also includes a temperature sensor disposed on the side of the cover facing the receiving cavity.

13. A refrigeration device, characterized in that, Includes the drawer as described in any one of claims 1-12.

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