Meal heat preservation device for school canteen

Abstract

The invention relates to the technical field of canteen equipment, and discloses a meal heat preservation device for a school canteen, which comprises a plurality of connecting blocks rotationally connected to the outer walls of a plurality of connecting shafts, rotating plates are fixedly connected to the outer walls of the plurality of connecting blocks, torsion springs sleeve the outer walls of the connecting shafts, and a heating device is fixedly connected to the inner wall of a water tank. The pressure of the space between the fixed plate and the water tank is gradually increased along with gradual heating of the heating device, a sliding plate and a limiting rod can have certain pressure on a rotating plate due to the existence of springs on the two sides, and when the pressure between the water tank and the fixed plate is increased to a certain degree, the rotating plate can rotate. When food is heated, the rotating plate breaks through the limitation of the sliding plate limiting rod, so that the rotating plate rotates around the joint between the connecting block and the connecting shaft, the broken-through water vapor enters the position above the fixed plate through the fixed plate, and the possibility that food at the bottom is heated firstly and food at the upper layer is heated later due to insufficient steam amount in the initial stage is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of canteen equipment, in particular to a food insulation device for a school canteen. Background Art

[0002] A canteen is a dining area located in government agencies, schools, factories, mines, and other enterprises and institutions, serving as a dining venue for employees and students. It typically has multiple windows, with fixed tables and heat preservation troughs located at the windows. Food is placed on trays, which are then placed in the heat preservation troughs, which contain heating pipes and water. The heating pipes heat the water, keeping the bottom of the trays in contact with the hot water and steam, thereby keeping the food warm.

[0003] However, in actual use, some staff members, for the sake of convenience, often put the food directly into the insulation device without following the standard operating procedures of ensuring sufficient steam first. This improper operation method will cause a series of problems. First, due to the insufficient amount of steam in the device, it is unable to provide sufficient heat for the food in the initial stage. The temperature of the food drops rapidly, making it difficult to maintain a suitable eating temperature throughout the entire meal period, affecting the diners' dining experience. Secondly, the insufficient amount of steam leads to an uneven distribution of the temperature field inside the device. The temperature in some areas is too low, and the food cannot be fully and evenly heated and kept warm. Some parts of the food may be at the right temperature, while some parts of the food may have become cold. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides a food insulation device for a school cafeteria, comprising an inner shell, a water tank fixedly connected to the inner wall of the inner shell, a table fixedly connected to the inner wall of the inner shell, and a plurality of lunch boxes placed on the inner wall of the table, and further comprising:

[0005] A limiting mechanism, wherein the outer wall of the limiting mechanism is fixedly connected to the inner wall of the water tank, and the limiting mechanism is used to limit the water vapor pressure;

[0006] A condensing mechanism, wherein the outer wall of the condensing mechanism is fixedly connected to the inner wall of the table, and the condensing mechanism is used to reduce the condensed water content;

[0007] An adjustment mechanism, wherein the outer wall of the adjustment mechanism is fixedly connected to the inner wall of the condensation mechanism, and the adjustment mechanism is used to adjust the water vapor flow rate;

[0008] A water pipe is fixedly connected to the inner wall of the water tank, a water valve is fixedly connected to the outer wall of the water pipe, a fixing plate is fixedly connected to the inner wall of the water tank, and a plurality of connecting shafts are fixedly connected to the inner wall of the fixing plate.

[0009] After heating for a period of time, the water will gradually evaporate and fill the space between the bottom of the water tank and the fixed plate. As the heating device gradually heats up, the pressure in the space between the fixed plate and the water tank gradually increases.

[0010] Preferably, the limiting mechanism includes:

[0011] A fixing assembly, wherein the outer wall of the fixing assembly is fixedly connected to the inner wall of the water tank;

[0012] The limiting component has an outer wall fixedly connected to the inner wall of the fixing component.

[0013] Preferably, the condensing mechanism comprises:

[0014] A condensation component, wherein the outer wall of the condensation component is fixedly connected to the inner wall of the table;

[0015] The outer wall of the diversion component is fixedly connected to the inner wall of the water tank.

[0016] Preferably, the adjustment mechanism includes:

[0017] A connecting component, wherein the outer wall of the connecting component is fixedly connected to the inner wall of the diversion component;

[0018] The adjusting component is slidingly connected at the outer wall of the adjusting component and the inner wall of the connecting component.

[0019] Preferably, the fixing assembly includes several connecting blocks rotatably connected to the outer walls of several connecting shafts, the outer walls of the several connecting blocks are fixedly connected with a rotating plate, the outer walls of the connecting shafts are sleeved with a torsion spring, and the inner wall of the water tank is fixedly connected with a heating device.

[0020] When in use, first place the device in the desired position, then pour the required amount of water into the sink, then place the dishes to be heated or kept warm inside the lunch box, then place the lunch box on the inner wall of the table, and then start the heating device to heat the poured water;

[0021] Preferably, the limiting assembly includes a plurality of springs fixedly connected to the inner wall of the fixed plate, a sliding plate fixedly connected to the outer wall of the plurality of springs, and a limiting rod fixedly connected to the outer wall of the sliding plate.

[0022] Due to the presence of springs on both sides, the sliding plate and the limiting rod will exert a certain amount of pressure on the rotating plate. At this time, when the pressure between the water tank and the fixed plate increases to a certain level, the rotating plate will break through the limit of the sliding plate limiting rod, causing the rotating plate to rotate around the connection between the connecting block and the connecting shaft, and then the water vapor that breaks through will pass through the fixed plate and enter the upper part of the fixed plate, reducing the possibility of insufficient steam in the initial stage causing the bottom food to heat up first and the upper layer to heat up later;

[0023] Preferably, the condensing assembly includes a plurality of beams fixedly connected to the inner wall of the table, a plurality of heat dissipation fins are fixedly connected to the inner wall of the plurality of beams, the plurality of heat dissipation fins are staggered, and a plurality of guide grooves are provided on the bottom outer wall of the beam.

[0024] Since the vent is arranged around the bottom of the lunch box, when the steam contacts the lunch box, it will gradually move upward along the outer wall of the lunch box, heating the lunch box evenly. When the steam contacts the outer wall of the lunch box, due to the low temperature inside the lunch box and the high temperature of the steam, condensed water will condense on the outer wall of the lunch box. When too much condensed water accumulates, the temperature of some parts of the lunch box will be low, resulting in uneven heating. At this time, when the steam contacts the bottom of the beam, due to the several heat dissipation fins arranged inside the beam, the heat dissipation at the beam will be faster than other places, so the excess condensed water will condense at the bottom of the beam.

[0025] Preferably, the flow guide assembly includes a restriction plate fixedly connected to the inner wall of the water tank, a plurality of vents are provided on the outer wall of the restriction plate, and a plurality of hydrophobic grooves are provided on the outer wall of the restriction plate.

[0026] The bottom of the beam near the operation point is higher than the bottom of the selling point. When the condensed water reaches a certain amount, it will flow through the diversion groove to the inner wall of the water tank, and then reach the restriction plate and pass through the drainage groove opened on the restriction plate.

[0027] Preferably, the connecting component includes a water outlet opened on the inner wall of the water tank, a U-shaped water outlet pipe is fixedly connected to the outer wall of the water outlet, and several vents are connected to the inner walls of the several vents.

[0028] Furthermore, when water vapor of a certain pressure enters the space between the fixing plate and the limiting plate through the fixing plate, the water vapor will enter the interior of the vent cylinder through the vent hole;

[0029] Preferably, the adjustment assembly includes a semicircular ring fixedly connected to the inner walls of several ventilators, movable rods are slidably connected to the inner walls of several ventilators, and several hemispherical limiting blocks are fixedly connected to the outer walls of the movable rods.

[0030] At this time, the water vapor with a certain pressure will generate a certain pressure on the movable rod, thereby causing the movable rod to move upward. When the water vapor flow rate is too large, the distance the movable rod moves will increase. Due to the presence of the semicircular ring, when the movable rod moves upward, the hemispherical restriction block fixed on its outer wall will interact with the semicircular ring, so that after the movable rod moves upward, the hemispherical restriction block and the semicircular ring will limit the passage of part of the water vapor, thereby making the passing water vapor controllable within a certain range. The heat exchange efficiency will not be low and the heat preservation will be slow due to the low water vapor flow rate; nor will the steam residence time in a local area be short due to the high flow rate, thereby causing uneven heat preservation.

[0031] When the condensed water reaches the outlet, it will be discharged through the U-shaped outlet pipe;

[0032] The present invention has the following beneficial effects:

[0033] (1) In order to solve the problem of insufficient steam in the initial stage causing the bottom food to heat up first and the upper layer to heat up later, the present invention is provided with a limiting mechanism. As the heating device gradually heats up, the pressure in the space between the fixed plate and the water tank gradually increases. Due to the presence of springs on both sides, the sliding plate and the limiting rod will exert a certain pressure on the rotating plate. At this time, when the pressure between the water tank and the fixed plate increases to a certain extent, the rotating plate will break through the restriction of the sliding plate limiting rod, so that the rotating plate will rotate around the connection between the connecting block and the connecting shaft, and the water vapor that has broken through will pass through the fixed plate and enter the upper part of the fixed plate, thereby reducing the possibility of insufficient steam in the initial stage causing the bottom food to heat up first and the upper layer to heat up later.

[0034] (2) In order to solve the problem of uneven heating caused by unstable flow rate of heated steam, the present invention is provided with an adjustment component. When water vapor enters the interior of the vent through the vent, the water vapor with a certain pressure will generate a certain pressure on the movable rod, thereby causing the movable rod to move upward. When the water vapor flow rate is too large, the distance the movable rod moves will increase. Due to the presence of the semicircular ring, when the movable rod moves upward, the hemispherical limiting block fixed on its outer wall will interact with the semicircular ring, so that after the movable rod moves upward, the hemispherical limiting block and the semicircular ring will limit the passage of a part of the water vapor, thereby making the passing water vapor controllable within a certain range. The heat exchange efficiency will not be low and the heat preservation will be slow due to the low water vapor flow rate; nor will the steam stay in a local area for a short time due to the high flow rate, thereby causing uneven heat preservation.

[0035] (3) In order to solve the problem of local temperature drop caused by accumulation of condensed water, the present invention is provided with a condensation component. When steam contacts the bottom of the beam, the heat dissipation at the beam will be faster than other places due to the several heat dissipation fins provided inside the beam, so the excess condensed water will condense at the bottom of the beam, and the bottom of the beam near the operation place will be higher than the bottom at the selling port. When the condensed water reaches a certain amount, it will flow to the inner wall of the water tank through the opening of the guide groove, and then reach the limiting plate, and then reach the water outlet through the drain groove provided on the limiting plate, and then be discharged through the U-shaped water outlet pipe, thereby actively lowering the local surface temperature to form a temperature difference gradient, guiding the steam to condense first in the low temperature area, reducing the amount of condensation on the outer wall of the lunch box, thereby reducing the influence of condensed water on the heated lunch box, resulting in uneven heating;

[0036] (4) The present invention utilizes the operating mechanism of the above-mentioned mechanism and is provided with a connecting component. Through the vent provided around the lunch box, steam can surround the area where the lunch box is placed, so that all parts of the lunch box can be exposed to an equal amount of steam at the same time, and heat transfer is balanced, thereby reducing the phenomenon of local overheating or overcooling of the lunch box caused by uneven steam distribution. Whether the food is in the center or the edge of the lunch box, it can maintain a similar temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0038] Figure 1 It is a cross-sectional schematic diagram of the positions of various mechanisms of the present invention;

[0039] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0040] Figure 3 It is a schematic cross-sectional view of the present invention as a whole;

[0041] Figure 4 It is a cross-sectional schematic diagram of the limiting mechanism of the present invention;

[0042] Figure 5 This is a schematic diagram of the fixing assembly of the present invention;

[0043] Figure 6 For the present invention Figure 5 A magnified schematic diagram of point A in the middle;

[0044] Figure 7 This is a schematic cross-sectional view of the torsion spring of the present invention in working state;

[0045] Figure 8 This is a schematic cross-sectional view of the condensation mechanism of the present invention;

[0046] Figure 9 It is a cross-sectional schematic diagram of the condensing component of the present invention;

[0047] Figure 10 For the present invention Figure 9 A magnified schematic diagram of point B in the middle;

[0048] Figure 11 is a schematic cross-sectional view of a flow guide assembly according to the present invention;

[0049] Figure 12 This is a schematic cross-sectional view of the adjustment mechanism of the present invention;

[0050] Figure 13 For the present invention Figure 12 Enlarged schematic diagram of point C in the middle;

[0051] Figure 14 This is a schematic cross-sectional view of the adjustment assembly of the present invention.

[0052] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0053] In the figure: 1. Restriction mechanism; 11. Fixing assembly; 12. Restriction assembly; 13. Inner shell; 14. Sink; 15. Countertop; 16. Lunch box; 111. Water pipe; 112. Water valve; 113. Fixing plate; 114. Connecting shaft; 115. Connecting block; 116. Rotating plate; 117. Torsion spring; 118. Heating device; 121. Spring; 122. Sliding plate; 123. Restriction rod; 2. Condensation Mechanism; 21. Condensation assembly; 22. Guide assembly; 211. Crossbeam; 212. Heat dissipation fins; 213. Guide groove; 221. Limiting plate; 222. Vent; 223. Drain groove; 3. Adjustment mechanism; 31. Connecting assembly; 32. Adjustment assembly; 311. Water outlet; 312. U-shaped water outlet pipe; 313. Breather; 321. Semicircular ring; 322. Movable rod; 323. Hemispherical limiting block. DETAILED DESCRIPTION

[0054] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0055] For example 1, please refer to Figure 1-Figure 7 The present invention is a food insulation device for a school cafeteria, comprising an inner shell 13, a water tank 14 fixedly connected to the inner wall of the inner shell 13, a table 15 fixedly connected to the inner wall of the inner shell 13, and a plurality of lunch boxes 16 placed on the inner wall of the table 15, and further comprising:

[0056] The limiting mechanism 1 has an outer wall fixedly connected to the inner wall of the water tank 14, and is used to limit the water vapor pressure;

[0057] Condensation mechanism 2, the outer wall of the condensation mechanism 2 is fixedly connected to the inner wall of the table 15, and the condensation mechanism 2 is used to reduce the condensed water content;

[0058] An adjustment mechanism 3, wherein the outer wall of the adjustment mechanism 3 is fixedly connected to the inner wall of the condensation mechanism 2, and the adjustment mechanism 3 is used to adjust the water vapor flow rate;

[0059] A water pipe 111 is fixedly connected to the inner wall of the water tank 14 , a water valve 112 is fixedly connected to the outer wall of the water pipe 111 , a fixing plate 113 is fixedly connected to the inner wall of the water tank 14 , and a plurality of connecting shafts 114 are fixedly connected to the inner wall of the fixing plate 113 .

[0060] After heating for a period of time, the water gradually evaporates and fills the space between the bottom of the water tank 14 and the fixed plate 113. As the heating device 118 gradually heats, the pressure in the space between the fixed plate 113 and the water tank 14 gradually increases.

[0061] Restriction agencies 1 include:

[0062] A fixing assembly 11, wherein the outer wall of the fixing assembly 11 is fixedly connected to the inner wall of the water tank 14;

[0063] The limiting component 12 has an outer wall fixedly connected to the inner wall of the fixing component 11 .

[0064] The condensing mechanism 2 includes:

[0065] Condensation component 21, the outer wall of the condensation component 21 is fixedly connected to the inner wall of the table 15;

[0066] The guide assembly 22 has an outer wall fixedly connected to the inner wall of the water tank 14 .

[0067] The adjustment mechanism 3 includes:

[0068] A connecting component 31, wherein the outer wall of the connecting component 31 is fixedly connected to the inner wall of the guide component 22;

[0069] The adjusting component 32 has an outer wall that is slidably connected to the inner wall of the connecting component 31 .

[0070] The fixing assembly 11 includes several connecting blocks 115 rotatably connected to the outer walls of several connecting shafts 114, and the outer walls of the several connecting blocks 115 are fixedly connected with rotating plates 116. The outer walls of the connecting shafts 114 are sleeved with torsion springs 117, and the inner wall of the water tank 14 is fixedly connected with a heating device 118.

[0071] When in use, the device is first placed in the desired location, then the required amount of water is poured into the water tank 14, and then the dishes to be heated or kept warm are placed in the lunch box 16, and then the lunch box 16 is placed on the inner wall of the table 15, and then the heating device 118 is started to heat the poured water;

[0072] The limiting assembly 12 includes a plurality of springs 121 fixedly connected to the inner wall of the fixing plate 113 , a sliding plate 122 fixedly connected to the outer wall of the plurality of springs 121 , and a limiting rod 123 fixedly connected to the outer wall of the sliding plate 122 .

[0073] Due to the presence of the springs 121 on both sides, the sliding plate 122 and the limiting rod 123 will exert a certain pressure on the rotating plate 116. At this time, when the pressure between the water tank 14 and the fixed plate 113 increases to a certain level, the rotating plate 116 will break through the restriction of the sliding plate limiting rod 123, so that the rotating plate 116 will rotate around the connection between the connecting block 115 and the connecting shaft 114, and then the water vapor that has broken through will pass through the fixed plate 113 and enter the upper part of the fixed plate 113, thereby reducing the possibility that the bottom food will be heated first and the upper layer will be heated later due to insufficient steam in the initial stage;

[0074] For example 2, please refer to Figure 2-14 The present invention is a food insulation device for a school cafeteria. Based on Example 1, the condensing component 21 includes a plurality of beams 211 fixedly connected to the inner wall of the table 15, and a plurality of heat dissipation fins 212 are fixedly connected to the inner wall of the plurality of beams 211. The plurality of heat dissipation fins 212 are staggered, and a plurality of guide grooves 213 are opened on the outer wall of the bottom of the beam 211.

[0075] Since the vent 313 is arranged around the bottom of the lunch box 16, when the steam contacts the lunch box 16, it will gradually move upward along the outer wall of the lunch box 16, uniformly heating the lunch box 16. When the steam contacts the outer wall of the lunch box 16, due to the low internal temperature of the lunch box 16 and the high steam temperature, condensed water will condense on the outer wall of the lunch box 16. When excessive condensed water accumulates, the temperature of a local position of the lunch box 16 will be low, resulting in uneven heating. At this time, when the steam contacts the bottom of the beam 211, due to the multiple heat dissipation fins 212 provided inside the beam 211, the heat dissipation at the beam 211 will be faster than other places, so the excess condensed water will condense at the bottom of the beam 211.

[0076] The flow guide assembly 22 includes a limiting plate 221 fixedly connected to the inner wall of the water tank 14 . A plurality of vents 222 and a plurality of drain grooves 223 are formed on the outer wall of the limiting plate 221 .

[0077] The bottom of the crossbeam 211 near the operation area is higher than the bottom of the vending port. When the condensed water reaches a certain amount, it will flow through the guide groove 213 to the inner wall of the water tank 14, and then reach the limiting plate 221, and pass through the drain groove 223 provided on the limiting plate 221;

[0078] The connection assembly 31 includes a water outlet 311 provided on the inner wall of the water tank 14 , a U-shaped water outlet pipe 312 is fixedly connected to the outer wall of the water outlet 311 , and a plurality of vents 313 are connected to the inner walls of the plurality of vents 222 .

[0079] Furthermore, when water vapor of a certain pressure passes through the fixing plate 113 and enters the space between the fixing plate 113 and the limiting plate 221, the water vapor will enter the interior of the vent cylinder 313 through the vent 222.

[0080] The adjustment assembly 32 includes a semicircular ring 321 fixedly connected to the inner walls of the plurality of vents 313 , a movable rod 322 is slidably connected to the inner walls of the plurality of vents 313 , and a plurality of hemispherical limiting blocks 323 are fixedly connected to the outer walls of the movable rod 322 .

[0081] At this time, the water vapor with a certain pressure will generate a certain pressure on the movable rod 322, thereby causing the movable rod 322 to move upward. When the water vapor flow rate is too large, the distance the movable rod 322 moves will increase. Due to the presence of the semicircular ring 321, when the movable rod 322 moves upward, the hemispherical limiting block 323 fixed on its outer wall will interact with the semicircular ring 321, so that after the movable rod 322 moves upward, the hemispherical limiting block 323 and the semicircular ring 321 will limit the passage of a part of the water vapor, thereby making the passing water vapor controllable within a certain range, and will not cause low heat exchange efficiency and slow heat preservation when the water vapor flow rate is too low; nor will it cause the steam to stay in a local area for a short time due to excessively high flow rate, thereby causing uneven heat preservation.

[0082] When the condensed water reaches the water outlet 311, it will be discharged through the U-shaped water outlet pipe 312;

[0083] A specific application of this embodiment is as follows: when in use, the device is first placed at a desired location, then a desired amount of water is poured into the water tank 14, then the food to be heated or kept warm is placed in the lunch box 16, then the lunch box 16 is placed on the inner wall of the table 15, and then the heating device 118 is activated to heat the poured water;

[0084] After heating for a period of time, the heated water will gradually evaporate and fill the space between the bottom of the water tank 14 and the fixed plate 113. As the heating device 118 gradually heats up, the pressure in the space between the fixed plate 113 and the water tank 14 will gradually increase. Due to the presence of the springs 121 on both sides, the sliding plate 122 and the limiting rod 123 will exert a certain pressure on the rotating plate 116. At this time, when the pressure between the water tank 14 and the fixed plate 113 increases to a certain level, the rotating plate 116 will break through the restriction of the sliding plate limiting rod 123, so that the rotating plate 116 will rotate around the connection between the connecting block 115 and the connecting shaft 114, and the water vapor that has broken through will pass through the fixed plate 113 and enter the top of the fixed plate 113, thereby reducing the possibility that the food at the bottom will be heated first and the upper layer will be heated later due to insufficient steam in the initial stage.

[0085] When the water vapor of a certain pressure enters the space between the fixed plate 113 and the limiting plate 221 through the fixed plate 113, the water vapor will enter the interior of the vent cylinder 313 through the vent hole 222. At this time, the water vapor with a certain pressure will generate a certain pressure on the movable rod 322, thereby causing the movable rod 322 to move upward. When the water vapor flow rate is too large, the distance moved by the movable rod 322 will increase. Due to the presence of the semicircular ring 321, when the movable rod 322 moves upward, the hemispherical limiting block 323 fixed on its outer wall will interact with the semicircular ring 321, so that after the movable rod 322 moves upward, the hemispherical limiting block 323 and the semicircular ring 321 will limit the passage of part of the water vapor, thereby making the passing water vapor controllable within a certain range, and will not cause low heat exchange efficiency and slow heat preservation when the water vapor flow rate is too low; nor will it cause the steam to stay in a local area for a short time due to excessively high flow rate, thereby causing uneven heat preservation.

[0086] When the steam enters the top of the limiting plate 221 through the vent cylinder 313, since the vent cylinder 313 is arranged around the bottom of the lunch box 16, when the steam contacts the lunch box 16, it will gradually move upward along the outer wall of the lunch box 16, and evenly heat the lunch box 16. When the steam contacts the outer wall of the lunch box 16, due to the low internal temperature of the lunch box 16 and the high steam temperature, condensed water will condense on the outer wall of the lunch box 16. When too much condensed water accumulates, the temperature of a local position of the lunch box 16 will be low, resulting in uneven heating. At this time, when the steam contacts the outer wall of the lunch box 16, the temperature of the local position of the lunch box 16 will be low, and uneven heating will occur. When the crossbeam 211 reaches the bottom, the heat dissipation at the crossbeam 211 will be faster than at other places due to the multiple heat dissipation fins 212 provided inside the crossbeam 211. Therefore, the excess condensed water will condense at the bottom of the crossbeam 211. The bottom of the crossbeam 211 near the operation area is higher than the bottom near the vending port. When the condensed water reaches a certain amount, it will flow through the guide groove 213 to the inner wall of the water tank 14, and then reach the limiting plate 221. Then, it will pass through the drain groove 223 provided on the limiting plate 221 and reach the water outlet 311, and then be discharged through the U-shaped outlet pipe 312.

[0087] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A food insulation device for a school cafeteria, comprising an inner shell (13), a water tank (14) fixedly connected to the inner wall of the inner shell (13), a table (15) fixedly connected to the inner wall of the inner shell (13), and a plurality of lunch boxes (16) placed on the inner wall of the table (15), characterized in that: Also includes: A limiting mechanism (1), wherein the outer wall of the limiting mechanism (1) is fixedly connected to the inner wall of the water tank (14), and the limiting mechanism (1) is used to limit the water vapor pressure; A condensing mechanism (2), wherein the outer wall of the condensing mechanism (2) is fixedly connected to the inner wall of the table (15), and the condensing mechanism (2) is used to reduce the condensed water content; An adjustment mechanism (3), wherein the outer wall of the adjustment mechanism (3) is fixedly connected to the inner wall of the condensation mechanism (2), and the adjustment mechanism (3) is used to adjust the water vapor flow rate; A water pipe (111) is fixedly connected to the inner wall of the water trough (14), a water valve (112) is fixedly connected to the outer wall of the water pipe (111), a fixing plate (113) is fixedly connected to the inner wall of the water trough (14), and a plurality of connecting shafts (114) are fixedly connected to the inner wall of the fixing plate (113).

2. A food insulation device for a school cafeteria according to claim 1, characterized in that: The limiting mechanism (1) comprises: A fixing assembly (11), wherein the outer wall of the fixing assembly (11) is fixedly connected to the inner wall of the water tank (14); A limiting component (12), wherein the outer wall of the limiting component (12) is fixedly connected to the inner wall of the fixing component (11).

3. The food insulation device for a school cafeteria according to claim 2, characterized in that: The condensing mechanism (2) comprises: A condensation component (21), wherein the outer wall of the condensation component (21) is fixedly connected to the inner wall of the table (15); A flow guide component (22), wherein the outer wall of the flow guide component (22) is fixedly connected to the inner wall of the water tank (14).

4. The food insulation device for a school cafeteria according to claim 3, characterized in that: The adjustment mechanism (3) comprises: A connecting component (31), wherein the outer wall of the connecting component (31) is fixedly connected to the inner wall of the flow guide component (22); An adjustment component (32) is provided, wherein the outer wall of the adjustment component (32) is slidably connected to the inner wall of the connection component (31).

5. The food insulation device for a school cafeteria according to claim 4, characterized in that: The fixing assembly (11) comprises a plurality of connecting blocks (115) rotatably connected to the outer walls of a plurality of connecting shafts (114); a rotating plate (116) is fixedly connected to the outer walls of the plurality of connecting blocks (115); a torsion spring (117) is sleeved on the outer wall of the connecting shaft (114); and a heating device (118) is fixedly connected to the inner wall of the water tank (14).

6. The food insulation device for a school cafeteria according to claim 5, characterized in that: The limiting assembly (12) comprises a plurality of springs (121) fixedly connected to the inner wall of the fixed plate (113), a sliding plate (122) fixedly connected to the outer wall of the plurality of springs (121), and a limiting rod (123) fixedly connected to the outer wall of the sliding plate (122).

7. The food insulation device for a school cafeteria according to claim 6, characterized in that: The condensing assembly (21) includes a plurality of crossbeams (211) fixedly connected to the inner wall of the table (15), a plurality of heat dissipation fins (212) fixedly connected to the inner wall of the plurality of crossbeams (211), the plurality of heat dissipation fins (212) are staggered, and a plurality of guide grooves (213) are provided on the outer wall of the bottom of the crossbeams (211).

8. The food insulation device for a school cafeteria according to claim 7, characterized in that: The flow guide assembly (22) comprises a restriction plate (221) fixedly connected to the inner wall of the water tank (14); a plurality of vents (222) are provided on the outer wall of the restriction plate (221); and a plurality of hydrophobic grooves (223) are provided on the outer wall of the restriction plate (221).

9. The food insulation device for a school cafeteria according to claim 8, characterized in that: The connection assembly (31) comprises a water outlet (311) provided on the inner wall of the water tank (14); a U-shaped water outlet pipe (312) is fixedly connected to the outer wall of the water outlet (311); and a plurality of vents (222) are connected to the inner walls thereof with a plurality of vents (313).

10. The food insulation device for a school cafeteria according to claim 9, characterized in that: The adjustment assembly (32) comprises a semicircular ring (321) fixedly connected to the inner walls of a plurality of ventilators (313), a movable rod (322) being slidably connected to the inner walls of the plurality of ventilators (313), and a plurality of hemispherical limiting blocks (323) being fixedly connected to the outer walls of the movable rod (322).

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