Refrigeration equipment

Abstract

The present invention discloses a refrigeration device, which relates to the field of refrigeration technology and comprises: a box body, a guide rail component, a first storage container, a second storage container and an air guide, wherein the box body is provided with a storage compartment and an air supply port; the guide rail component is installed on the box body; the first storage container is connected to the guide rail component, and the second storage container is placed on the top of the first storage container; the air guide component is provided with an air outlet for supplying air to the second storage container; the first storage container is provided with a first opening, and the second storage container is provided with an air distribution port, at least part of the airflow in the second storage container enters the first opening through the air distribution port, so that the temperature in the first storage container is higher than the temperature in the second storage container, the upper and lower temperature zones are optimized, the temperature of the first storage container is effectively increased, the guide rail component is kept away from areas with lower temperatures, and the risk of condensation and icing of the guide rail component due to excessively low temperature is reduced.

Description

Technical Field

[0001] The present invention relates to the field of refrigeration technology, in particular to refrigeration equipment. Background Art

[0002] With the improvement of living standards and changes in consumption habits, people are gradually accustomed to buying food once a week or in batches. Due to the diversity and convenience of shopping channels, the storage time of fresh fish and meat ingredients has become shorter, and has gradually changed from long-term frozen storage to refrigerated / ice temperature storage. Compared with frozen storage, ice temperature storage has the advantages of short-term freshness without thawing and is very popular with users. By dividing the drawers into upper and lower layers, the back air outlets are layered, and the upper and lower layers are respectively provided with air outlets, the freezing point temperature of fish in the upper layer is 0~-2℃, and the freezing point temperature of meat in the lower layer is -2~-3℃ through air volume distribution.

[0003] When installed in a dual-system refrigerator, due to the high refrigeration humidity (60-80%) and low temperature of the lower drawer (-2~-3℃), the temperature at the bottom of the drawer is likely to be lower than the dew point, causing condensation or even ice on the cabinet and drawer side walls. If condensation and ice form on the drawer guide rails, there is a risk of guide rail corrosion / stuckness, affecting the user experience. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a refrigeration device that can reduce the risk of condensation and icing of the guide rail components due to too low a temperature.

[0005] According to an embodiment of the present invention, the refrigeration equipment comprises: a box body, a guide rail component, a first storage container, a second storage container and an air guide member, the box body is provided with a storage compartment and an air supply port; the guide rail component is installed on the box body; the first storage container is located in the storage compartment and is connected to the guide rail component to achieve a sliding connection between the first storage container and the box body; the second storage container is located in the storage compartment, and the second storage container is placed on the top of the first storage container; the air guide member is provided with a first air guide duct connected to the air supply port, the first air guide duct is provided with an air outlet, and the air outlet is used to supply air to the second storage container; wherein, the first storage container is provided with a first opening, the second storage container is provided with an air distribution port, and at least part of the airflow in the second storage container enters the first opening through the air distribution port.

[0006] The refrigeration device according to the embodiment of the present invention has at least the following beneficial effects: by arranging an air guide to centrally supply air to the second storage container, and arranging an air distribution port in the second storage container, the cold air first enters the second storage container and then enters the first storage container, so that the temperature in the first storage container is higher than the temperature in the second storage container, the layout of the upper and lower temperature zones is optimized, the temperature of the first storage container is effectively increased, the guide rail component is kept away from the area with lower temperature, and the risk of condensation and icing of the guide rail component due to excessively low temperature is reduced.

[0007] According to some embodiments of the present invention, the air guide is located above the second storage container, the second storage container is provided with a second opening, and the air outlet faces the second opening.

[0008] According to some embodiments of the present invention, the air guide member includes a top plate and a sealing portion, the first air guide duct is provided on the top plate, the sealing portion extends downward from the top plate, the sealing portion is located at the periphery of the second opening, and the lower edge of the sealing portion is lower than the upper edge of the second opening.

[0009] According to some embodiments of the present invention, a folded edge is provided at an edge of the second opening, and the folded edge extends toward the sealing portion.

[0010] According to some embodiments of the present invention, a guide plate is provided at the bottom of the second storage container, and the guide plate is used to guide the airflow flowing out of the air distribution port from the outer periphery of the first opening to the inside of the first opening.

[0011] According to some embodiments of the present invention, the guide plate includes a first guide portion and a second guide portion, the first guide portion is arranged in a vertical direction, the second guide portion is arranged in a horizontal direction, the upper end of the first guide portion is connected to the second storage container, and the lower end of the first guide portion is connected to the second guide portion.

[0012] According to some embodiments of the present invention, the bottom plate includes a first bottom surface, a connecting surface, and a second bottom surface, the height of the first bottom surface is lower than the height of the second bottom surface, and the second bottom surface is located on the outside of the first bottom surface, the lower side of the connecting surface is connected to the first bottom surface, the upper side of the connecting surface is connected to the second bottom surface, the second bottom surface is located above the second air guide portion, and the connecting surface can guide the airflow flowing out through the second air guide portion to flow downward.

[0013] According to some embodiments of the present invention, the second storage container includes a bottom plate and a side plate, the side plate is arranged around the outer periphery of the bottom plate, and the air distribution port is arranged on the side plate.

[0014] According to some embodiments of the present invention, the side panel includes a first side surface and a second side surface, the first side surface and the second side surface are arranged in the up and down direction, and the angle between the first side surface and the second side surface is an obtuse angle, and the first side surface and the second side surface are both provided with the air distribution outlet.

[0015] According to some embodiments of the present invention, the ratio of the volumes of the first storage container and the second storage container is i, the ratio of the sum of the outlet areas of all the air outlets to the sum of the outlet areas of all the air outlet holes is k, and i≥k is satisfied.

[0016] According to some embodiments of the present invention, a ratio i of the volumes of the first storage container and the second storage container is 2, and a ratio k of the sum of the outlet areas of all the air outlets to the sum of the outlet areas of all the air outlet holes is 1.5 to 2.

[0017] According to some embodiments of the present invention, a ratio i of the volumes of the first storage container and the second storage container is 1, and a ratio k of the sum of the outlet areas of all the air outlets to the sum of the outlet areas of all the air outlet holes is 0.5 to 1.

[0018] According to some embodiments of the present invention, a ratio i of the volumes of the first storage container and the second storage container is 3, and a ratio k of the sum of the outlet areas of all the air outlets to the sum of the outlet areas of all the air outlet holes is 1 to 3.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0021] Figure 1 A partial cross-sectional view of a refrigeration device according to an embodiment of the present invention;

[0022] Figure 2 for Figure 1 An exploded view of a refrigeration device in one direction is shown;

[0023] Figure 3 for Figure 2 A partial cross-sectional view of a second storage container is shown;

[0024] Figure 4 for Figure 1 An enlarged view of point A is shown.

[0025] Reference numerals:

[0026] 101, box body; 102, first storage container; 103, second storage container; 104, first opening; 105, second opening; 106, drawer front plate; 107, air supply port; 108, air guide; 109, first air guide duct; 110, air outlet; 111, air distribution port; 112, first bottom surface; 113, connecting surface; 114, second bottom surface; 115, air return port;

[0027] 201, limit part; 202, air duct cover plate; 203, sliding part; 204, top plate; 205, front side plate; 206, bottom plate; 207, left side plate; 208, right side plate; 209, rear side plate; 210, return air duct;

[0028] 301, guide plate; 302, first guide portion; 303, second guide portion; 304, first side surface; 305, second side surface;

[0029] 401, sealing portion; 402, folding edge. DETAILED DESCRIPTION

[0030] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0031] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0033] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0034] Temperature is an indispensable condition for food preservation control. Food preservation requires constant temperature and suitable low temperature. Ensuring the temperature fluctuation within the minimum range is more conducive to food preservation. In order to ensure constant temperature and suitable low temperature, existing refrigerators are designed with a micro-freezing chamber, which is usually set between the refrigeration chamber and the freezer chamber.

[0035] With the rise of fresh food e-commerce in recent years, people's demand for meat and fresh food has gradually shifted from long-term storage to short-term storage. From the perspective of current refrigerator technology, ice temperature technologies such as 0℃ preservation and micro-freezing preservation are more suitable for the short-term storage needs of meat and fresh food.

[0036] In the conventional freezing process, the freezing temperature is generally 18°C ​​or even lower, which can freeze most of the water in the food. During the freezing process, ice crystals are first produced in the extracellular solution. Under the action of osmotic pressure, the water in the cell flows out, and finally the water inside and outside the cell crystallizes. In the process of water crystallization, its volume increases and the surface of the ice crystal has spikes, which will damage the cell membrane. Conventional frozen food is in a hard frozen state, so it is difficult to directly carry out subsequent processing. Generally, it needs to go through a long thawing process first. During the thawing process, the damaged cell solution flows out to produce blood, resulting in a large amount of nutrient loss. The micro-freezing preservation technology is to store food in a temperature zone near the freezing point of the organism. Only part of the food is frozen, which effectively reduces the damage of ice crystals to cells, and subsequent processing can be carried out without thawing. Compared with ordinary low-temperature refrigeration, micro-freezing preservation technology can significantly extend the shelf life of products. Therefore, for foods such as fish and meat that only need to be stored for a short period of time (1 to 2 weeks), micro-freezing preservation technology is better than conventional freezing preservation.

[0037] Refrigerator ice temperature technology can effectively inhibit the effects of microorganisms and enzymes during the storage of meat ingredients to extend the shelf life, but this type of technology does not take into account the taste and color of the ingredients. Different storage temperatures have a greater impact on the taste and color of meat ingredients. For example, fish ingredients have a higher water content and a lower fat content, so their freezing point is higher than other meat ingredients. At the same time, because the muscle composition of fish ingredients is quite different from that of meat ingredients, when fish ingredients are stored in an ice-temperature slightly frozen environment, the recrystallization of ice crystals in the cells accelerates the rupture of cell membranes and causes the release of proteases, which accelerates the reaction of fish meat in an unfavorable direction. On the other hand, ice crystals cause protein denaturation and poor water retention, resulting in poor meat color and taste during the storage of fish meat. Therefore, placing different types of ingredients in the same compartment is prone to the above problems.

[0038] Specifically, the central freezing point of meat is around -1.5℃ to -2.5℃, and the central freezing point of fish is around -0.5℃ to -1℃. Since the muscle composition of fish is quite different from that of meat, when fish and meat are stored together in an ice-cold environment, the temperature is likely to be higher than the central freezing point of the meat, and the meat is prone to spoilage. Or when the temperature is lower than the central freezing point of the fish, the ice crystals in the fish cells will recrystallize, accelerate the rupture of the cell membrane, and cause the release of proteases, which will accelerate the reaction of the fish in an unfavorable direction. On the other hand, ice crystals will cause protein denaturation and poor water retention, resulting in poor color and taste of the fish during storage.

[0039] In the related art, a refrigerator includes a box body, a first storage container and a second storage container, a storage space is provided in the box body, the first storage container and the second storage container are both located in the same storage space, the first storage container and the second storage container are arranged in the up-down direction, the first storage container is connected to the box body through a guide rail, an air supply duct is provided on the back of the box body, a first air supply port and a second air supply port are provided on the air supply duct, the position of the first air supply port corresponds to the first storage container, and the position of the second air supply port corresponds to the second storage container. The temperature in the first storage container is lower than the temperature in the second storage container, the freezing point temperature of fish is 0°C to -2°C in the second storage container, and the freezing point temperature of meat is -2°C to -3°C in the first storage container. When the first storage container or the second storage container stores some fruits, vegetables and other foods with high water content, these foods will release water vapor in the refrigerator, which will increase the humidity of the refrigerator and make the humidity in the storage space higher (the humidity is 60% to 80%). The temperature at the bottom of the first storage container is likely to be lower than the dew point temperature, causing condensation or even ice on the box inner wall and the side wall of the second storage container. If condensation and ice form at the guide rail position, there is a risk of corrosion / stuckness of the guide rail, affecting the user experience.

[0040] It should be noted that condensation in the storage space is not only caused by high humidity inside the box, but also related to humidity outside the box. The main reasons for the increase in humidity inside the box are: First, when users store food with high water content in a short period of time, the evaporation of water in the food and the increase in the frequency of refrigeration and defrosting cause the humidity inside the box to continue to rise, resulting in short-term condensation inside the box. Second, when the box is under low ambient temperature conditions (winter and spring), due to the low ambient temperature, the start-up time during refrigeration is significantly shortened, and the evaporator's dehumidification through refrigeration is relatively weakened, resulting in condensation inside the box; the increase in humidity outside the box causes condensation inside the box mainly when the external humidity is very high (plum rainy days, return of the south wind). When the user keeps opening the door, a large amount of external moisture flows into the box in a short period of time, causing the internal condensation to increase.

[0041] Refer to the following Figures 1 to 4, explaining how the refrigeration device of the embodiment of the present invention solves the above-mentioned problems. The refrigeration device of the embodiment of the present invention may be a refrigerator, a freezer or other products. The following description will be made taking a refrigerator as an example.

[0042] Reference Figure 1 As shown, the refrigeration device of the embodiment of the present invention includes a box body 101, and a refrigerating chamber, a temperature-changing chamber and a freezing chamber are arranged in the box body 101, and the temperature-changing chamber is located between the refrigerating chamber and the freezing chamber. The refrigeration device also includes a first storage container 102 and a second storage container 103, and the first storage container 102 and the second storage container 103 are both located in the temperature-changing chamber, and the temperature-changing chamber is a storage room.

[0043] Reference Figures 1 to 3 As shown, it can be understood that the first storage container 102 is configured as a lower drawer, that is, the first storage container 102 has a first opening 104 on the top, and the second storage container 103 is configured as an upper sliding tray, that is, the second storage container 103 has a second opening 105 on the top. In other words, the first storage container 102 and the second storage container 103 can be combined into an ice-temperature fresh-keeping drawer, which includes an upper sliding tray and a lower drawer. The upper sliding tray is arranged on the upper part of the lower drawer. When the lower drawer is pulled out, the user pulls out or pushes the upper sliding tray in to slide back and forth, and can choose to take out the food in the upper sliding tray or the lower drawer. When the upper sliding tray is completely overlapped on the upper part of the lower drawer, the lower drawer forms a relatively closed space, which has a better moisturizing effect for naked food.

[0044] Reference Figure 1 and Figure 2 As shown, it can be understood that the first storage container 102 is provided with a drawer front plate 106, which is located at the front end of the first storage container 102 and extends upward to the front side of the second storage container 103, so that when the first storage container 102 and the second storage container 103 are in the closed position, the drawer front plate 106 can close the entrance of the variable temperature chamber. Compared with the scheme of using the front end of the first storage container 102 to close the lower half of the entrance of the variable temperature chamber, and using the front end of the second storage container 103 to close the upper half of the entrance of the variable temperature chamber, the drawer front plate 106 of the first storage container 102 closes the entrance of the entire variable temperature chamber, which can reduce the gap between the first storage container 102 and the second storage container 103, improve the sealing performance, and reduce the leakage of cold air.

[0045] Reference Figure 1 and Figure 2As shown, it can be understood that the box body 101 is provided with an air supply port 107, and the position of the air supply port 107 corresponds to the storage space. The cold air generated by the heat exchange of the refrigeration system of the refrigeration equipment flows along the air duct and is blown out from the air supply port 107, and then enters the first storage container 102 and the second storage container 103. Since the temperature of the air is low and the temperature of the food is high, the two directly exchange heat, the temperature of the air will rise, and the temperature of the food will decrease. The air after the heat exchange returns to the air duct through the return air port 115, and exchanges heat with the evaporator of the refrigeration system again. Through this continuous circulation method, the temperature of the food can be lowered.

[0046] The refrigeration device of the embodiment of the present invention further includes a guide rail component, which is installed on the box body 101. Figure 2 As shown, it can be understood that the first storage container 102 is provided with a sliding portion 203, and the sliding portion 203 is connected to the guide rail component. The first storage container 102 slides in the box body 101 through the sliding portion 203 and the guide rail component, which makes it more convenient to take and put food.

[0047] Reference Figure 1 and Figure 2 As shown, it can be understood that the refrigeration device of the embodiment of the present invention is further provided with an air guide 108, the air guide 108 is provided with a first air guide duct 109 connected to the air supply port 107, the first air guide duct 109 is provided with a plurality of air outlet holes 110, the air outlet holes 110 are provided on the bottom wall of the air guide 108, the air outlet holes 110 are located above the second storage container 103, and are used to supply air to the second storage space of the second storage container 103. That is, the second storage container 103 is provided with a second opening 105, and the air outlet holes 110 face the second opening 105. Compared with the solution of blowing directly to the second storage container 103 through the air supply port 107, the use of the air guide 108 can make the temperature distribution in the second storage container 103 more uniform.

[0048] The specific reason is that the air supply port 107 is located at the rear of the first storage container 102 and the second storage container 103. When the cold air blows out from the air supply port 107, the cold air first exchanges heat with the food at the rear of the first storage container 102 and the second storage container 103, and then reaches the front of the first storage container 102 and the second storage container 103 to exchange heat with the food. The cold air will lose cold energy during the flow, resulting in different cooling ranges of the food in the front and back. When the amount of food stored is large, the food near the air outlet is prone to overfreezing, and the temperature of the food far away from the air outlet and close to the front of the drawer is high, which poses a risk of poor preservation effect. In addition, since there is only one air supply port 107, the first storage container 102 and the second storage container 103 are prone to dead corners, and the food in the dead corners cools down slowly, which makes the temperature distribution in the first storage container 102 and the second storage container 103 uneven. After the air guide 108 is added, the cold air blown out from the air outlet 107 first enters the first air guide duct 109 of the air guide 108, and then blows out from the multiple air outlets 110, so that the food can be cooled from multiple positions. And it is blown from top to bottom into the first storage container 102 and the second storage container 103, which is conducive to reducing the difference in the cold air flow distance of each air outlet 110, thereby making the cooling range of each position close to the same.

[0049] It should be noted that, in some other embodiments, the second storage container 103 may not be connected to the air outlet 110 through an open opening. For example, the second storage container 103 is connected to the air outlet 110 through a ventilation pipe.

[0050] It is understandable that the refrigeration device also includes a tank body, an air duct component and a fan assembly, wherein the inner cavity of the tank body defines a storage space for the refrigeration device for installing the above-mentioned air duct component, fan assembly and other components, and for storing items to be stored.

[0051] The air duct component is arranged in the gallbladder body, and the air duct component is arranged close to the rear side wall of the gallbladder body. The air duct component is used to define the supply air duct and the return air duct. The air in the storage room can enter the heat exchanger room through the return air duct, exchange heat with the evaporator in the heat exchanger room and cool down to cold air. The cooled cold air is then sent into the storage room through the supply air duct.

[0052] The fan assembly is a power source, which is used to provide power to drive the air flow, so that the air in the storage room is sucked into the heat exchanger room through the return air duct for heat exchange, and the cold air in the heat exchanger room that has been cooled after heat exchange is blown into the storage room through the first air guide duct 109, and this process is continuously repeated to achieve cold air circulation.

[0053] The air duct component includes an air duct cover plate 202 disposed at the rear of the first storage container 102, and a temperature sensor is disposed on the air duct cover plate 202. The temperature sensor can control the opening and closing of the fan assembly in real time according to the detected temperature, deliver cold air to the first storage container 102 to maintain the temperature of the first storage container 102 at a temperature of 0°C to -1°C, and deliver cold air to the second storage container 103 to maintain the temperature of the second storage container 103 at a temperature of about -3°C. The air duct component also includes an air duct foam disposed on the air duct cover plate 202. The air duct foam is a filling material around the air duct inside the refrigeration device, which can effectively keep warm. This can not only reduce the heat exchange inside and outside the refrigeration device, but also improve the refrigeration efficiency of the refrigeration device, thereby reducing energy consumption. Polyurethane foam or polystyrene board are common air duct foam materials, both of which have good thermal insulation properties.

[0054] Reference Figure 3 and Figure 4 As shown, it can be understood that the lower part of the second storage container 103 is provided with an air outlet 111, and the air outlet 111 is located on the side of the second storage container 103. After the cold air blown in from top to bottom exchanges heat with the food, at least part of the airflow leaves the second storage container 103 through the air outlet 111, and then enters the first opening 104 downward, and can continue to exchange heat with the food in the first storage container 102. Since the set temperature in the second storage container 103 is lower than the set temperature in the first storage container 102, the airflow flowing out of the second storage container 103 can still cool the food in the first storage container 102. An air guide 108 is provided to centrally supply air to the second storage container 103, and an air distribution port 111 is provided at the bottom of the second storage container 103, so that cold air first enters the second storage container 103 and then enters the first storage container 102, so that the temperature in the first storage container 102 is higher than the temperature in the second storage container 103, thereby optimizing the layout of the upper and lower temperature zones, effectively increasing the temperature of the first storage container 102, keeping the guide rail component away from areas with lower temperatures, and reducing the risk of condensation and icing of the guide rail component due to excessively low temperatures.

[0055] It should be noted that, in some other embodiments, the air guide 108 may also be disposed at the rear side of the second storage container 103, that is, the air outlet 110 supplies air from the rear side of the second storage container 103. In some other embodiments, a portion of the air guide 108 is disposed at the rear side of the second storage container 103, and a portion of the air guide 108 is disposed above the second storage container 103, that is, the plurality of air outlets 110 supply air from the rear side and the top of the second storage container 103, respectively.

[0056] Reference Figure 2As shown, it can be understood that the second storage container 103 includes a bottom plate 206, a left side plate 207, a right side plate 208, a front side plate 205 and a rear side plate 209 (the left side plate 207, the right side plate 208, the front side plate 205 and the rear side plate 209 are collectively referred to as side plates), the front side plate 205 is arranged adjacent to the drawer front plate 106, the rear side plate 209 is located at the rear side directly opposite to the front side plate 205, the left side plate 207 and the right side plate 208 are connected between the front side front side plate 205 and the rear side rear side plate 209 and are arranged directly opposite, and the bottom plate 206, the left side plate 207, the right side plate 208, the rear side plate 209 and the front side plate 205 jointly define a rectangular space with one side open. The air distribution port 111 is arranged on the side plate, indicating that at least one of the left side plate 207, the right side plate 208, the front side plate 205 and the rear side plate 209 is provided with the air distribution port 111. In this embodiment, the left side plate 207 , the right side plate 208 , the front side plate 205 and the rear side plate 209 are all provided with air distribution ports 111 , so as to improve the uniformity of air flow distribution and further improve the temperature uniformity in the first storage container 102 .

[0057] Reference Figure 3 As shown, it can be understood that the side plate includes a first side surface 304 and a second side surface 305, the first side surface 304 and the second side surface 305 are arranged in the up-down direction, and a bending structure is formed between the first side surface 304 and the second side surface 305, the angle of the bending structure is an obtuse angle, and the first side surface 304 and the second side surface 305 are both provided with air distribution openings 111. When food is placed in the second storage container 103, it is not easy for the food to adhere to the first side surface 304 and the second side surface 305 at the same time, so that the air distribution openings 111 are not easily blocked, ensuring that after the cold air has undergone heat exchange with the food, at least part of the airflow leaves the second storage container 103 through the air distribution openings 111. Figure 3 In the illustrated solution, the air outlets 111 on the first side 304 and the second side 305 are connected as one, which can expand the air outlet area of ​​the air outlets 111. It is understandable that in some other embodiments, the air outlets 111 on the first side 304 and the second side 305 can also be independent of each other and not connected to each other.

[0058] It is understandable that the ratio of the volume of the first storage container 102 to the second storage container 103 is i, and the ratio of the sum of the outlet areas of all the air outlets 111 to the sum of the outlet areas of all the air outlet holes 110 is k, satisfying i≥k. The greater the amount of cold air entering per unit volume, the greater the temperature reduction. When i>k, it means that the air volume per unit volume entering the first storage container 102 is less than the air volume per unit volume entering the second storage container 103, ensuring that the temperature in the first storage container 102 is higher than the temperature in the second storage container 103. When i=k, it means that the air volume per unit volume entering the first storage container 102 is close to the air volume per unit volume entering the second storage container 103. Taking into account the factors such as cold air sinking, wind speed attenuation, and cold capacity loss, the temperature of the same airflow reaching the air outlet 110 is lower than the temperature of the air outlet 111. Therefore, when i=k, it can still be ensured that the temperature in the first storage container 102 is higher than the temperature in the second storage container 103.

[0059] According to some embodiments of the present invention, the ratio i of the volume of the first storage container 102 to the second storage container 103 is 2, and the ratio k of the sum of the outlet areas of all the air outlets 111 to the sum of the outlet areas of all the air outlet holes 110 is 1.5 to 2. When the freezing point temperature of fish is 0°C to -2°C in the first storage container 102, the freezing point temperature of meat can be -2°C to -3°C in the second storage container 103.

[0060] According to some embodiments of the present invention, the ratio i of the volume of the first storage container 102 to the second storage container 103 is 1, and the ratio k of the sum of the outlet areas of all the air outlets 111 to the sum of the outlet areas of all the air outlet holes 110 is 0.5 to 1. When the freezing point temperature of fish is 0°C to -2°C in the first storage container 102, the freezing point temperature of meat can be -2°C to -3°C in the second storage container 103.

[0061] According to some embodiments of the present invention, the ratio i of the volume of the first storage container 102 to the second storage container 103 is 3, and the ratio k of the sum of the outlet areas of all the air outlets 111 to the sum of the outlet areas of all the air outlet holes 110 is 1 to 3. When the freezing point temperature of fish is 0°C to -2°C in the first storage container 102, the freezing point temperature of meat can be -2°C to -3°C in the second storage container 103.

[0062] Reference Figures 1 to 4As shown, it can be understood that the bottom plate 206 of the second storage container 103 is provided with a step structure, which includes a first bottom surface 112, a connecting surface 113 and a second bottom surface 114. The first bottom surface 112, the connecting surface 113 and the second bottom surface 114 are annular, and the first bottom surface 112 and the second bottom surface 114 are both planes. The height of the first bottom surface 112 is lower than the height of the second bottom surface 114, and the second bottom surface 114 is located outside the first bottom surface 112. The area of ​​the second bottom surface 114 is smaller than the area of ​​the first bottom surface 112, that is, the second bottom surface 114 is smaller, and the area of ​​the first bottom surface 112 is larger, which is mainly used to place food. The lower side of the connecting surface 113 is connected to the first bottom surface 112, and the upper side of the connecting surface 113 is connected to the second bottom surface 114. The connecting surface 113 can be an inclined surface, a curved surface or a vertical surface. The liquid dripping from the food generally accumulates on the first bottom surface 112, and it is difficult to flow out from the air distribution port 111. If the liquid flows out from the air distribution port 111 and falls into the storage room, it may pollute the environment, or even fall into the first storage container 102 and pollute other food.

[0063] It should be noted that, in some other embodiments, the air outlet 111 can also be set on the bottom plate 206 of the second storage container 103. The advantage of setting it on the side of the second storage container 103 is that it can increase the height of the air outlet 111 and reduce the risk of the air outlet 111 being blocked by food, thereby ensuring the air intake into the first storage container 102 and reducing the risk of liquid flowing out of the air outlet 111 and entering the first storage container 102 and causing contamination.

[0064] Reference Figure 3 As shown, it can be understood that the bottom of the second storage container 103 is provided with a guide plate 301, and the guide plate 301 is used to guide the airflow flowing out of the air outlet 111 from the outer periphery of the first opening 104 to the inside of the first opening 104. The guide plate 301 includes a first guide portion 302 and a second guide portion 303, the first guide portion 302 is arranged in the vertical direction, and the second guide portion 303 is arranged in the horizontal direction. The upper end of the first guide portion 302 is connected to the side plate of the second storage container 103, and the lower end of the first guide portion 302 is connected to the second guide portion 303. The height of the first guide portion 302 in the vertical direction ensures that there is a gas flow space between the second guide portion 303 and the bottom plate 206 of the second storage container 103, and prevents the airflow flowing out of the air outlet 111 from flowing out to the outside of the first storage container 102. The second guide portion 303 is used to guide the airflow flowing out of the air outlet 111 to flow into the inside of the first storage container 102. It can also be understood that a third air guide duct is formed between the bottom of the second storage container 103 , the first air guide portion 302 and the second air guide portion 303 , the air outlet 111 is connected to the third air guide duct, and the outlet of the third air guide duct faces the central area of ​​the first opening 104 .

[0065] It is understandable that there are multiple air outlets 111, and they are distributed around the bottom of the second storage container 103. In this way, after the airflow flows out from the air outlets 111, it will converge from the surroundings of the first opening 104 to the central area of ​​the first opening 104, so that the incoming air in the first storage container 102 is more dispersed, thereby achieving the effect of making the temperature distribution in the first storage container 102 more uniform.

[0066] Reference Figure 1 and Figure 3 As shown, it can be understood that the second bottom surface 114 is located directly above the second air guide portion 303, and the connecting surface 113 is located on the inner side of the second air guide portion 303, that is, the connecting surface 113 is located in front of the gas flow direction of the second air guide portion 303, and the connecting surface 113 is tilted downward, so that after the airflow flows out along the second air guide portion 303, the top of the airflow flows downward along the connecting surface 113, that is, the connecting surface 113 can guide the airflow flowing out through the second air guide portion 303 to flow downward, so that the cold air flow can reach the first storage container 102 as soon as possible, thereby improving the refrigeration efficiency.

[0067] Reference Figure 1 , Figure 2 and Figure 4 As shown, it can be understood that the air guide member 108 includes a top plate 204, the first air guide duct 109 is arranged on the top plate 204, the second storage container 103 is located below the top plate 204 and defines a fresh-keeping space with the top plate 204, and the second storage container 103 is movably arranged relative to the top plate 204. However, when the second storage container 103 moves from the withdrawal position to the preservation position, if the top plate 204 and the second storage container 103 are made to abut against each other up and down in order to ensure complete sealing, it will cause friction and interference between the second storage container 103 and the top plate 204, and at the same time increase the difficulty of user operation, seriously affecting the user experience. Therefore, in order to ensure the preservation effect and facilitate the operation of the second storage container 103, an anti-interference gap is formed between the top plate 204 and the second storage container 103, that is, when the second storage container 103 moves from the withdrawal position to the preservation position, the top plate 204 and the second storage container 103 do not contact each other in the up and down directions, thereby avoiding friction and interference during the assembly process of the second storage container 103 and improving the user experience. That is, in order to facilitate the movement of the second storage container 103 and reduce the movement resistance of the second storage container 103, there is generally a gap between the top plate 204 and the second storage container 103, causing the airflow in the second storage container 103 to overflow from the gap, thereby affecting the humidity of the second storage container 103 and the temperature in the first storage container 102.

[0068] The air guide 108 further includes a sealing portion 401, which extends downward from the top plate 204, is located at the periphery of the second opening 105, and the lower edge of the sealing portion 401 is lower than the upper edge of the second opening 105. The top plate 204 is directly opposite to the bottom plate 206 of the second storage container 103, and the sealing portion 401 is an extended side wall connected to the top plate 204, and the extended side wall extends downward toward the side close to the second storage container 103. At this time, the extended side wall and the left side plate 207, the right side plate 208 and the rear side plate 209 are directly opposite in the up-down direction, and the extended side wall forms a three-sided surrounding structure to seal the second storage container 103.

[0069] Reference Figure 4 As shown, it can be understood that a folded edge 402 is provided at the edge of the second opening 105, and the folded edge 402 extends toward the sealing portion 401. The folded edge 402 is close to the sealing portion 401, and the distance between the sealing portion 401 and the folded edge 402 is reduced, that is, the sealing portion 401 and the folded edge 402 are abutted or have a small gap, thereby preventing cold wind from overflowing from between the air guide 108 and the second storage container 103.

[0070] It is understandable that in some other embodiments, the sealing portion 401 may also include a first sealing section and a second sealing section, the first sealing section is arranged in the vertical direction, the second sealing section is arranged obliquely, the first sealing section and the folded edge 402 are arranged relatively to each other in the up-down direction, and the two are avoided in the up-down direction, so as to facilitate the pulling and pulling operation of the second storage container 103. The second sealing section and the folded edge 402 overlap, and the function of the second sealing section is to seal the gap between the first sealing section and the folded edge 402 to achieve the sealing of the fresh-keeping space.

[0071] Reference Figure 1 and Figure 2 As shown, it can be understood that a return air port 115 is provided on the back of the first storage container 102, and the air duct component includes a return air duct 210. The return air port 115 is directly connected to the return air duct 210. The cold air blown out from the air distribution port 111 flows from top to bottom and finally flows back to the return air duct 210 through the return air port 115. During the whole process, the cold air inside the storage room flows in a direction to reduce the overflow of cold air.

[0072] Reference Figure 2 As shown, it can be understood that the first storage container 102 is provided with a limiting portion 201, which is located on the left and right sides of the first storage container 102 and extends upward. When the second storage container 103 slides on the first storage container 102, the limiting portion 201 can play a guiding and limiting role, so that the second storage container 103 moves along the front-to-back direction and is not easy to shake. The limiting portion 201 can also reduce the overflow of cold air in the first storage container 102 and improve the moisturizing effect.

[0073] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. Refrigeration equipment, characterized in that include: The box body is provided with a storage compartment and an air supply vent; A guide rail component, mounted on the box; A first storage container, located in the storage compartment and connected to the guide rail component, so as to achieve a sliding connection between the first storage container and the box body; a second storage container, located in the storage room, and the second storage container is placed on top of the first storage container; An air guide member, provided with a first air guide duct connected with the air supply port, wherein the first air guide duct is provided with an air outlet hole, and the air outlet hole is used to supply air to the second storage container; Wherein, the first storage container is provided with a first opening, and the second storage container is provided with an air distribution port, and at least part of the airflow in the second storage container enters the first opening through the air distribution port; a guide plate is provided at the bottom of the second storage container, and the guide plate is used to guide the airflow flowing out of the air distribution port from the outer periphery of the first opening to the inside of the first opening; the guide plate includes a first guide part and a second guide part, the first guide part is arranged in a vertical direction, and the second guide part is arranged in a horizontal direction, the upper end of the first guide part is connected to the second storage container, and the lower end of the first guide part is connected to the second guide part; the second storage container includes a bottom plate, the bottom plate includes a first bottom surface, a connecting surface and a second bottom surface, the height of the first bottom surface is lower than the height of the second bottom surface, and the second bottom surface is located on the outside of the first bottom surface, the lower side of the connecting surface is connected to the first bottom surface, and the upper side of the connecting surface is connected to the second bottom surface, and the second bottom surface is located above the second guide part, and the connecting surface can guide the airflow flowing out through the second guide part to flow downward.

2. The refrigeration equipment according to claim 1, characterized in that: The air guide member is located above the second storage container, the second storage container is provided with a second opening, and the air outlet faces the second opening.

3. The refrigeration equipment according to claim 2, characterized in that: The air guide member includes a top plate and a sealing portion, the first air guide duct is arranged on the top plate, the sealing portion extends downward from the top plate, the sealing portion is located at the periphery of the second opening, and the lower edge of the sealing portion is lower than the upper edge of the second opening.

4. The refrigeration equipment according to claim 3, characterized in that: A folded edge is provided at the edge of the second opening, and the folded edge extends toward the sealing portion.

5. The refrigeration equipment according to claim 1, characterized in that: The second storage container includes a side plate, the side plate is arranged around the outer periphery of the bottom plate, and the air distribution port is arranged on the side plate.

6. The refrigeration device according to claim 5, characterized in that: The side plate includes a first side surface and a second side surface, the first side surface and the second side surface are arranged in the up-down direction, and the included angle between the first side surface and the second side surface is an obtuse angle, and the first side surface and the second side surface are both provided with the air distribution outlet.

7. The refrigeration device according to claim 1, characterized in that: The ratio of the volumes of the first storage container to the second storage container is i, the ratio of the sum of the outlet areas of all the air outlets to the sum of the outlet areas of all the air outlet holes is k, and i≥k is satisfied.

8. The refrigeration device according to claim 7, characterized in that: A ratio i of the volumes of the first storage container and the second storage container is 2, and a ratio k of the sum of the outlet areas of all the air outlets to the sum of the outlet areas of all the air outlet holes is 1.5 to 2.

9. The refrigeration device according to claim 7, characterized in that: A ratio i of the volumes of the first storage container and the second storage container is 1, and a ratio k of the sum of the outlet areas of all the air outlets to the sum of the outlet areas of all the air outlet holes is 0.5 to 1.

10. The refrigeration equipment according to claim 7, characterized in that: A ratio i of the volumes of the first storage container and the second storage container is 3, and a ratio k of the sum of the outlet areas of all the air outlets to the sum of the outlet areas of all the air outlet holes is 1 to 3.

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