Novel cold storage rice box

Abstract

The utility model discloses a novel cold storage rice box which comprises an inner container internally provided with a rice storage cavity and a shell arranged on the periphery of the inner container, and a cooling air duct structure is defined between the inner wall of the shell and the outer wall of the inner container. The cooling air duct structure comprises an air inlet duct located on the front side of the inner container, an air outlet duct located on the rear side of the inner container and main cooling air ducts which are communicated with the air inlet duct and the air outlet duct respectively and located on the left side and the right side of the inner container, and the main cooling air ducts are arranged in an S-shaped bending mode. Therefore, by arranging the main cooling air channel which is arranged in the S-shaped bending mode between the shell and the inner container, when cold air enters the main cooling air channel, the cold air can flow in the preset direction, so that all positions of the side portion of the inner container can be cooled, it is guaranteed that all positions of the inner container are evenly cooled, and meanwhile the S-shaped air channel can prolong the flowing path of air; and heat exchange between the cold air and the inner container is more sufficient, so that the cooling effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a rice box technical field, concretely relates to a novel refrigeration rice box. BACKGROUND

[0002] The part provided in this part is merely the background information related to the present application to facilitate the person skilled in the art to understand the present application more thoroughly and accurately, and it is not necessarily the prior art.

[0003] The traditional rice box is only an ordinary container, so the problem in the rice box is the same as the room temperature, and the complex and changeable ambient temperature is not conducive to the storage of rice and affects the quality of rice. With the improvement of living standards, people need more fresh storage containers, and low-temperature refrigeration is a good fresh-keeping method, so the refrigeration rice box emerges as the times require, and the refrigeration module is arranged in the rice box to provide a suitable temperature for the rice box and improve the storage quality.

[0004] The existing refrigeration rice box usually comprises a shell and an inner container arranged in the shell and used for storing rice, and a partition cavity is formed between the shell and the inner container. Therefore, the cold air generated by the refrigeration module can enter the partition cavity to cool the inner container. Since no air duct structure is arranged in the partition cavity, when the cold air generated by the refrigeration module enters the partition cavity, the gas flow is chaotic, which causes some areas to be too cold or too hot, and the cold air cannot uniformly flow to all corners of the partition cavity, thereby causing uneven cooling of the inner container. In addition, if forced convection is required, a larger power fan needs to be arranged to compensate for the loss caused by the turbulent flow of the air, but the larger power fan produces larger noise and higher energy consumption. UTILITARIAN CONTENT

[0005] In order to overcome the defects of the prior art described above, the utility model provides a novel refrigeration rice box, which is characterized by arranging a cooling air duct structure between the inner wall of the shell and the outer wall of the inner container. The cooling air duct structure comprises a main cooling air duct arranged in an S-shaped bending manner on the left and right sides of the inner container. In this way, when the cold air enters the main cooling air duct, it can flow in a predetermined direction, thereby cooling and cooling each position of the side of the inner container, ensuring uniform cooling of the inner container. In addition, the S-shaped air duct can prolong the flow path of the gas, so that the heat exchange between the cold air and the inner container is more sufficient, thereby improving the cooling effect. In addition, the cooling air duct structure does not need to use a large power fan, thereby reducing noise and improving user experience.

[0006] The utility model discloses a novel refrigeration rice box, which is characterized by arranging a cooling air duct structure between the inner wall of the shell and the outer wall of the inner container. The cooling air duct structure comprises a main cooling air duct arranged in an S-shaped bending manner on the left and right sides of the inner container. In this way, when the cold air enters the main cooling air duct, it can flow in a predetermined direction, thereby cooling and cooling each position of the side of the inner container, ensuring uniform cooling of the inner container. In addition, the S-shaped air duct can prolong the flow path of the gas, so that the heat exchange between the cold air and the inner container is more sufficient, thereby improving the cooling effect. In addition, the cooling air duct structure does not need to use a large power fan, thereby reducing noise and improving user experience.

[0007] A novel refrigeration rice box, comprising:

[0008] The inner container is internally provided with a rice storage cavity.

[0009] an outer shell arranged outside the inner container; a cooling air duct structure formed between the inner wall of the outer shell and the outer wall of the inner container;

[0010] The cooling air duct structure comprises an air inlet duct on the front side of the inner container, an air outlet duct on the back side of the inner container, and a main cooling air duct on the left and right sides of the inner container, which is in communication with the air inlet duct and the air outlet duct and is arranged in an S-shaped bending manner.

[0011] Further, the outer shell comprises two outer shell side plates on the left and right sides, and the inner container comprises two inner container side plates on the left and right sides, wherein:

[0012] The inner wall of the outer shell side plate is provided with an air duct groove arranged in an S-shaped bending manner;

[0013] The inner wall of the outer shell side plate is matched with the outer wall of the inner container side plate to seal the air duct groove and form the main cooling air duct.

[0014] Further, the air duct groove comprises a first groove body, a second groove body and a third groove body arranged in sequence and spaced apart from each other from top to bottom, wherein:

[0015] The first groove body, the second groove body and the third groove body are arranged in an extending manner along the front and back directions;

[0016] One end of the first groove body is in communication with the air outlet duct, the other end of the first groove body and one end of the second groove body are in communication through a fourth groove body, the other end of the second groove body and one end of the third groove body are in communication through a fifth groove body, and the other end of the third groove body is in communication with the air inlet duct;

[0017] The fourth groove body and the fifth groove body are arranged in an extending manner along the up and down directions.

[0018] Further, the first groove body, the second groove body and the third groove body are parallel to each other and arranged in a horizontal manner.

[0019] Further, one end of the first groove body in communication with the air outlet duct is arranged in an inclined downward manner toward the other end of the first groove body; one end of the second groove body in communication with the fourth groove body is arranged in an inclined downward manner toward the other end of the second groove body; and one end of the third groove body in communication with the fifth groove body is arranged in an inclined downward manner toward the other end of the third groove body.

[0020] Further, the outer shell further comprises an outer shell front plate and an outer shell back plate on the front and back sides, and the inner container further comprises an inner container front plate and an inner container back plate on the front and back sides, wherein:

[0021] The inner wall of the front plate of the shell is provided with a first groove communicated with the air duct slot air inlet end, and the inner wall of the front plate of the shell is combined with the outer wall of the front plate of the inner container to seal the first groove to form the air inlet air duct.

[0022] The inner wall of the rear plate of the shell is provided with a second groove communicated with the air duct slot air outlet end, and the inner wall of the rear plate of the shell is combined with the outer wall of the rear plate of the inner container to seal the second groove to form the air outlet air duct.

[0023] Further, the top of the shell side plate, the shell front plate and the shell rear plate are all inwardly bent to form a first flanging structure, the top of the inner container side plate, the inner container front plate and the inner container rear plate are all inwardly bent to form a second flanging structure, and a sealing ring is arranged between the first flanging structure and the second flanging structure to realize sealing.

[0024] Further, the bottom of the shell side plate extends downwardly with an extension side plate, the inner wall of the extension side plate is provided with a communicated groove; the bottom of the inner container extends with a lower hopper, and the inner walls of the two extension side plates are combined with the left and right outer walls of the lower hopper to seal the communicated grooves to form a communicated air duct, which is communicated with the air outlet air duct and the air inlet air duct respectively.

[0025] Further, the extension side plate is further provided with a shell bottom plate, and a mounting cavity is formed between the bottom of the lower hopper and the inner bottom wall of the shell bottom plate.

[0026] The mounting cavity is provided with a fan assembly, and the fan assembly comprises a wind guide cover and a fan arranged in the wind guide cover, the air inlet of the wind guide cover is communicated with the communicated air duct, and the air outlet of the wind guide cover is communicated with the air inlet air duct.

[0027] Further, a base is further arranged on the bottom of the shell, the base is provided with a compressor and a condenser, the wind guide cover is provided with an evaporator, and the evaporator is located at the air outlet of the fan; the compressor, the condenser and the evaporator are sequentially connected by pipelines to form a closed loop.

[0028] In summary, the novel refrigerated rice box has the following beneficial effects:

[0029] (1) The novel refrigeration rice box of the utility model, through setting up cooling air duct structure between the inner wall of the shell and the outer wall of the inner container, the cooling air duct structure includes main cooling air duct arranged in S shape on the left and right sides of the inner container, so setting up, when cold air enters into the main cooling air duct, it can flow according to the predetermined direction, thereby the cooling and temperature reduction of each position of the side part of the inner container can be guaranteed, the cooling of each part of the inner container is uniform, meanwhile, the S-shaped air duct can prolong the flow path of the gas, the heat exchange between the cold air and the inner container is more sufficient, thereby the cooling effect is improved. In addition, setting up the cooling air duct structure does not need to use the fan with large power, thereby the noise is reduced, the user experience is improved.

[0030] (2) The novel refrigeration rice box of the utility model, when the first groove body, the second groove body and the third groove body in the air duct groove are all set up in the downward inclination, the condensed water produced in the cooling process can flow downward along the inclination direction of the first groove body, the second groove body and the third groove body in sequence and finally gather to the bottom of the shell to realize the treatment, thereby the problems such as the bacterial breeding and the generation of peculiar smell caused by the residual condensed water are avoided.

[0031] (3) The novel refrigeration rice box of the utility model, through setting up sealing ring between the first flanging structure and the second flanging structure to realize the sealing, thereby the cooling air duct structure and the rice storage cavity can be cut off, so setting up, not only the mutual penetration of the odor can be effectively avoided, but also the temperature in the rice storage cavity is prevented from being too low to cause the moisture and adhesion of the rice. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 It is the structure schematic view of the utility model refrigeration rice box;

[0033] Figure 2 It is the explosion schematic view of the utility model refrigeration rice box;

[0034] Figure 3 It is the structure schematic view of the shell unit in the utility model refrigeration rice box;

[0035] Figure 4 It is Figure 3 It is the structure schematic view of another view;

[0036] Figure 5 It is the section schematic view of the utility model refrigeration rice box after hiding the compressor.

[0037] Among them, the meaning of the reference signs is as follows:

[0038] 1, liner; 11, liner side plate; 12, liner front plate; 13, liner rear plate; 14, lower hopper; 15, second flanging structure; 2, shell; 21, shell unit; 211, shell side plate; 2111, first groove body; 2112, second groove body; 2113, third groove body; 2114, fourth groove body; 2115, fifth groove body; 2116, communication groove; 212, shell front plate unit; 2121, first recess unit; 2122, third recess unit; 213, shell rear plate unit; 2131, second recess unit; 214, shell bottom plate unit; 215, first flanging structure unit; 3, fan assembly; 31, air guide cover; 32, fan; 4, rice outlet seat; 41, drawer; 5, base; 6, compressor; 7, condenser; 8, evaporator. DETAILED DESCRIPTION

[0039] In order to better understand and implement, the technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application.

[0040] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as limiting the modules or elements indicated thereby to have a specific orientation, to be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application.

[0042] Referring to Figures 1-5 The present application provides a novel refrigerated rice tank, which comprises a liner 1 internally provided with a rice storage cavity and a shell 2 arranged at the outer periphery of the liner 1, and a cooling air duct structure is formed between the inner wall of the shell 2 and the outer wall of the liner 1; wherein the cooling air duct structure comprises an air inlet duct located at the front side of the liner 1, an air outlet duct located at the rear side of the liner 1, and a main cooling air duct respectively communicating with the air inlet duct and the air outlet duct and located at the left and right sides of the liner 1, the main cooling air duct being arranged in an S-shaped bending manner.

[0043] The outer shell 2 comprises two outer shell side plates 211 on the left and right sides, and the inner container 1 comprises two inner container side plates 11 on the left and right sides. The inner wall of the outer shell side plate 211 is provided with an air duct groove arranged in an S-shaped bending manner. The inner wall of the outer shell side plate 211 is attached to the outer wall of the inner container side plate 11 to seal the air duct groove and form a main cooling air duct.

[0044] Therefore, based on the above structure, when the refrigeration module is started, the cold air can flow through the air inlet duct, the main cooling air duct and the air outlet duct in sequence and circulate to cool the inner container 1, thereby providing a suitable temperature for the rice storage cavity and improving the storage quality of the rice. The main cooling air duct is arranged in an S-shaped bending manner. When the cold air enters the main cooling air duct, it can flow in a predetermined direction and cool each position of the side of the inner container 1, thereby ensuring uniform cooling of the inner container 1. The S-shaped air duct can also prolong the flow path of the gas, making the heat exchange between the cold air and the inner container 1 more sufficient, thereby improving the cooling effect. In addition, the cooling air duct structure does not require a high-power fan 32, thereby reducing noise and improving user experience.

[0045] Referring to Figure 3 The air duct groove comprises a first groove body 2111, a second groove body 2112 and a third groove body 2113 arranged in sequence and spaced apart from top to bottom. The first groove body 2111, the second groove body 2112 and the third groove body 2113 are arranged in the front-to-back direction. One end of the first groove body 2111 is in communication with the air outlet duct, and the other end of the first groove body 2111 is in communication with one end of the second groove body 2112 through a fourth groove body 2114. The other end of the second groove body 2112 is in communication with one end of the third groove body 2113 through a fifth groove body 2115. The other end of the third groove body 2113 is in communication with the air inlet duct. The fourth groove body 2114 and the fifth groove body 2115 extend in the up-and-down direction.

[0046] The first groove body 2111, the second groove body 2112 and the third groove body 2113 are parallel to each other and arranged in a horizontal manner. The fourth groove body 2114 and the fifth groove body 2115 are parallel to each other and arranged in a vertical manner.

[0047] Of course, in other embodiments, the first groove body 2111, the second groove body 2112 and the third groove body 2113 can be arranged inclined downward. One end of the first groove body 2111 inclined downward toward the other end of the first groove body 2111. One end of the second groove body 2112 inclined downward toward the other end of the second groove body 2112. One end of the third groove body 2113 inclined downward toward the other end of the third groove body 2113.

[0048] Thus, when the first groove body 2111, the second groove body 2112 and the third groove body 2113 in the air duct groove are all arranged obliquely downward, the condensed water generated during the cooling process can flow downward along the oblique direction of the first groove body 2111, the second groove body 2112 and the third groove body 2113 in sequence and finally collect at the bottom of the shell 2. At this time, a collection tray for collecting condensed water can be arranged at the bottom of the shell 2, and an evaporation module can be arranged in the collection tray to evaporate the condensed water, thereby avoiding the problem of bacterial breeding and odor generation caused by the residual condensed water.

[0049] Referring to Figures 2-4 The shell 2 is formed by splicing two shell units 21 arranged symmetrically left and right. The shell unit 21 includes a shell side plate 211, a shell front plate unit 212 arranged at the front of the shell side plate 211, a shell rear plate unit 213 arranged at the rear of the shell side plate 211, an extension side plate arranged at the bottom of the shell side plate 211 and extending downward, and a shell bottom plate unit 214 arranged on the extension side plate. When the two shell units 21 are spliced left and right to form the shell 2, the two shell front plate units 212 form a shell front plate, the two shell rear plate units 213 form a shell rear plate, and the two shell bottom plate units 214 form a shell bottom plate. In addition, the inner container 1 also includes an inner container front plate 12 located at the front side and corresponding to the shell front plate, an inner container rear plate 13 located at the rear side and corresponding to the shell rear plate, and a lower hopper 14 located at the bottom of the inner container 1 and corresponding to the extension side plate and the shell bottom plate.

[0050] The inner wall of the shell front plate unit 212 is provided with a first groove unit 2121 communicating with one end of the third groove body 2113. When the two shell front plate units 212 are spliced left and right to form the shell front plate, the two first groove units 2121 form a first groove. When the inner wall of the shell front plate is fitted with the outer wall of the inner container front plate 12, the first groove can be sealed to form an air inlet duct. In addition, the inner wall of the shell front plate unit 212 is also provided with a third groove unit 2122 communicating with the fourth groove body 2114. When the two shell front plate units 212 are spliced left and right to form the shell front plate, the two third groove units 2122 form a third groove. When the inner wall of the shell front plate is fitted with the outer wall of the inner container front plate 12, the third groove can be sealed to form a communication air duct, which can communicate the air duct grooves in the left and right shell side plates 211.

[0051] Thus, by arranging the air inlet duct and the communication air duct at the front side of the inner container 1, the front side of the inner container 1 can be cooled and cooled when the cold air flows through the air inlet duct and the communication air duct, thereby improving the cooling effect.

[0052] Further, the inner wall of the shell back plate unit 213 is provided with a second groove unit 2131 which is in communication with one end of the first groove body 2111. When the two shell back plate units 213 are spliced to form the shell back plate, the two second groove units 2131 form a second groove. When the inner wall of the shell back plate is attached to the outer wall of the inner container back plate 13, the second groove is sealed to form an air outlet air duct.

[0053] Therefore, by arranging the air outlet air duct at the back side of the inner container 1, the inner container 1 can be cooled when the cold air flows through the air outlet air duct, thereby improving the cooling effect.

[0054] Referring to Figures 3-5 The top of the shell side plate 211, the shell front plate unit 212 and the shell back plate unit 213 is bent inwardly to form a first flange structure unit 215. When the two shell units 21 are spliced to form the shell 2, the two first flange structure units 215 form a first flange structure. Similarly, the top of the inner container side plate 11, the inner container front plate 12 and the inner container back plate 13 is bent inwardly to form a second flange structure 15. The first flange structure unit abuts against the second flange structure 15.

[0055] The first flange structure and the second flange structure 15 are further provided with a sealing ring. The top surface of the sealing ring abuts against the bottom wall of the first flange structure, and the bottom surface of the sealing ring abuts against the top wall of the second flange structure 15 to achieve sealing. Therefore, by arranging the sealing ring between the first flange structure and the second flange structure 15 to achieve sealing, the cooling air duct structure and the rice storage cavity can be separated, which not only effectively prevents odor from being mixed, but also prevents the rice in the rice storage cavity from being too cold and sticky.

[0056] Further, the bottom of the shell side plate 211 extends downwardly to form an extension side plate. The inner wall of the extension side plate is provided with a communication groove 2116. The inner walls of the two extension side plates are attached to the left and right outer walls of the lower hopper 14 to seal the communication groove 2116 and form a communication air duct which is in communication with the air outlet air duct and the air inlet air duct.

[0057] The bottom of the lower hopper 14 and the inner bottom wall of the shell bottom plate further form an installation cavity. The installation cavity is provided with a fan assembly 3. The fan assembly 3 includes a wind guide cover 31 and a fan 32 arranged in the wind guide cover 31. The air inlet of the wind guide cover 31 is in communication with the communication air duct, and the air outlet of the wind guide cover 31 is in communication with the air inlet air duct. In addition, the installation cavity is further provided with a rice outlet seat 4 at the bottom of the lower hopper 14. The rice outlet seat 4 is provided with a drawer 41 which can be pulled out, thereby facilitating the user to take and place rice.

[0058] In addition, the base 5 is arranged at the bottom of the shell 2, the compressor 6 and the condenser 7 are arranged in the base 5, the evaporator 8 is arranged in the air deflector 31 and located at the air outlet of the fan 32; the compressor 6, the condenser 7 and the evaporator 8 are sequentially connected by pipelines to form a closed loop.

[0059] Therefore, under the action of the fan 32, the air flowing out from the air outlet can enter the air deflector 31 through the communication air duct, and then is blown out from the air outlet of the air deflector 31 and enters the air inlet duct to form a circulating flow; the evaporator 8 absorbs heat to cool the air, and then the cold air can be blown into the air inlet duct under the action of the fan 32.

[0060] In summary, the novel refrigerated rice box has the following beneficial effects:

[0061] (1) The novel refrigerated rice box of the utility model, by setting up the cooling air duct structure between the inner wall of the shell 2 and the outer wall of the inner container 1, the cooling air duct structure includes the main cooling air duct arranged in S shape on the left and right sides of the inner container 1, so that when the cold air enters the main cooling air duct, it can cool and lower the temperature of each position of the side of the inner container 1, ensure that the cooling of the inner container 1 is uniform, and the S-shaped air duct can prolong the flow path of the gas, so that the heat exchange between the cold air and the inner container 1 is more sufficient, thereby improving the cooling effect. In addition, the cooling air duct structure does not need to use a fan 3 with high power, thereby reducing noise and improving user experience.

[0062] (2) When the first groove body 2111, the second groove body 2112 and the third groove body 2113 in the air duct groove are all arranged inclined downward, the condensed water generated during the cooling process can flow downward along the inclined direction of the first groove body 2111, the second groove body 2112 and the third groove body 2113 in sequence and finally collect at the bottom of the shell 2 for treatment, thereby avoiding the problems of bacterial breeding and odor generation caused by the residual condensed water.

[0063] (3) The novel refrigerated rice box of the utility model, by setting up the sealing ring between the first flange structure and the second flange structure 15 to realize sealing, so that the cooling air duct structure and the rice storage cavity can be separated, so that not only can the odor be effectively prevented from being mixed, but also the temperature in the rice storage cavity can be prevented from being too low to cause the rice to be damp and sticky.

[0064] It should be noted that when an element is referred to as being "fixed to" or "arranged on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0065] It needs to be understood that the terms "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the modules or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0066] In addition, in the description of the utility model, the meaning of "a plurality of" and "several" is two or more than two, unless otherwise explicitly and specifically limited.

[0067] The technical means disclosed in the utility model scheme is not only limited to the technical means disclosed in the above-mentioned embodiments, but also includes the technical scheme composed of any combination of the above technical features. It should be noted that for ordinary skilled persons in the art, without departing from the principles of the utility model, a number of improvements and refinements can also be made, which are also considered within the protection scope of the utility model.

Claims

1. A novel cold storage rice bin characterized in that, The utility model relates to a rice storage device with cooling function, which comprises: a liner with a rice storage cavity formed inside; an outer shell arranged outside the liner; a cooling air duct structure is formed between the inner wall of the outer shell and the outer wall of the liner; wherein the cooling air duct structure comprises an air inlet duct on the front side of the liner, an air outlet duct on the back side of the liner, and a main cooling air duct on the left and right sides of the liner, which is in communication with the air inlet duct and the air outlet duct and is arranged in an S-shaped manner.

2. The novel cold rice box according to claim 1, characterized in that, The outer shell comprises two outer shell side plates on the left and right sides, and the liner comprises two liner side plates on the left and right sides, wherein: the inner wall of the outer shell side plate is provided with an air duct groove arranged in an S-shaped manner; the inner wall of the outer shell side plate is in close contact with the outer wall of the liner side plate to seal the air duct groove and form the main cooling air duct.

3. The novel cold rice box according to claim 2, characterized in that, The air duct groove comprises a first groove body, a second groove body, and a third groove body arranged in sequence and spaced apart from each other from top to bottom, wherein: the first groove body, the second groove body, and the third groove body are arranged in the front-back direction; one end of the first groove body is in communication with the air outlet duct, the other end of the first groove body is in communication with one end of the second groove body through a fourth groove body, the other end of the second groove body is in communication with one end of the third groove body through a fifth groove body, and the other end of the third groove body is in communication with the air inlet duct; the fourth groove body and the fifth groove body are arranged in the up-down direction.

4. The novel cold rice box according to claim 3, characterized in that, The first groove body, the second groove body, and the third groove body are parallel to each other and arranged in a horizontal manner.

5. The novel cold rice box according to claim 3, characterized in that, The end of the first groove body in communication with the air outlet duct is inclined downward to the other end of the first groove body; the end of the second groove body in communication with the fourth groove body is inclined downward to the other end of the second groove body; and the end of the third groove body in communication with the fifth groove body is inclined downward to the other end of the third groove body.

6. The novel cold rice box according to any one of claims 2-5, characterized in that, The outer shell further comprises an outer shell front plate and an outer shell back plate on the front and back sides, and the liner further comprises a liner front plate and a liner back plate on the front and back sides, wherein: the inner wall of the outer shell front plate is provided with a first groove in communication with the air inlet end of the air duct groove, and the inner wall of the outer shell front plate is in close contact with the outer wall of the liner front plate to seal the first groove and form the air inlet duct; the inner wall of the outer shell back plate is provided with a second groove in communication with the air outlet end of the air duct groove, and the inner wall of the outer shell back plate is in close contact with the outer wall of the liner back plate to seal the second groove and form the air outlet duct.

7. The novel cold rice box according to claim 6, characterized in that, The top of the outer shell side plate, the outer shell front plate, and the outer shell back plate is inwardly bent to form a first flange structure, and the top of the liner side plate, the liner front plate, and the liner back plate is inwardly bent to form a second flange structure, and a sealing ring is arranged between the first flange structure and the second flange structure to achieve sealing.

8. The novel cold rice box according to any one of claims 2-5, characterized in that, The bottom of the shell side plate extends downwardly with an extension side plate, an inner wall of the extension side plate is provided with a communication groove; the inner bottom wall of the lower hopper is in close contact with the left and right outer walls of the lower hopper to seal the communication grooves to form a communication air duct, which is in communication with the air outlet duct and the air inlet duct respectively.

9. The novel cold rice box according to claim 8, characterized in that, The extension side plate is further provided with a shell bottom plate, and a mounting cavity is formed between the bottom of the lower hopper and the inner bottom wall of the shell bottom plate. The mounting cavity is provided with a fan assembly, which includes a wind guide cover and a fan arranged in the wind guide cover, the air inlet of the wind guide cover is in communication with the communication air duct, and the air outlet of the wind guide cover is in communication with the air inlet duct.

10. The novel cold rice box according to claim 9, characterized in that, Further comprising a base provided on the shell bottom, the base is provided with a compressor and a condenser, the wind guide cover is provided with an evaporator, the evaporator is located at the air outlet of the fan; the compressor, the condenser and the evaporator are connected in sequence by pipelines to form a closed loop.

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