A shell structure, an indoor unit and an air conditioner

Abstract

The utility model provides a kind of shell structure, indoor unit and air conditioner, shell structure includes shell body and heat preservation spare;Shell body includes first side plate, second side plate, top plate and bottom plate, first side plate and second side plate are oppositely arranged, the both ends of top plate are respectively connected with the top of first side plate and second side plate, the both ends of bottom plate are respectively the bottom of first side plate and second side plate;Heat preservation spare includes first heat preservation plate and second heat preservation plate, the connecting place of top plate and first side plate and the connecting place of top plate and second side plate are respectively provided with first heat preservation plate, the connecting place of bottom plate and first side plate and the connecting place of bottom plate and second side plate are respectively provided with second heat preservation plate.The utility model first heat preservation plate and second heat preservation plate are to reduce the cold bridge generated by direct contact between each plate, and setting heat preservation plate around left and right side plates can ensure that each contact surface can have a better heat preservation effect.

Description

Technical Field

[0001] This utility model belongs to the field of air conditioner technology, specifically relating to a shell structure, an indoor unit, and an air conditioner. Background Technology

[0002] Grain silo air conditioners are temperature and humidity control devices specifically designed for grain storage environments. They primarily maintain suitable temperature and humidity within the grain silo to prevent mold, pests, and condensation during storage, ensuring grain safety and quality. Therefore, phosphine gas needs to be periodically introduced into the grain silo to kill pests, or nitrogen gas needs to be introduced to reduce oxygen concentration and inhibit pests, microorganisms, and grain respiration. Because grain silo air conditioners regulate temperature and humidity, their evaporator chambers are connected to the grain silo interior. If the air conditioner cannot guarantee good airtightness, phosphine or nitrogen gas can leak. Phosphine leaks not only pollute the environment but also easily poison nearby operators, while nitrogen leaks reduce nitrogen concentration within the silo, increasing the risk of pest infestation. Simultaneously, the unit must have good insulation to reduce temperature fluctuations within the grain silo. When the grain silo air conditioner casing uses sheet metal parts, the splicing of sheet metal easily leads to multiple joints and gaps, making sealing difficult and increasing the risk of gas leakage within the grain silo. Utility Model Content

[0003] This utility model provides a shell structure, an indoor unit, and an air conditioner, which can solve the technical problem that when the shell is made of sheet metal, the splicing of sheet metal will easily lead to many splicing surfaces and easy air leakage at the splicing gaps.

[0004] This utility model provides a shell structure, which includes an outer shell body and a heat insulation component;

[0005] With the longitudinal section of the outer shell body as the projection plane, the outer shell body includes a first side plate, a second side plate, a top plate and a bottom plate. The first side plate and the second side plate are arranged opposite to each other. The two ends of the top plate are respectively connected to the top of the first side plate and the second side plate, and the two ends of the bottom plate are respectively the bottom of the first side plate and the second side plate.

[0006] The insulation component includes a first insulation board and a second insulation board. The first insulation board is provided at the connection between the top plate and the first side plate and at the connection between the top plate and the second side plate, respectively. The second insulation board is provided at the connection between the bottom plate and the first side plate and at the connection between the bottom plate and the second side plate, respectively.

[0007] In some embodiments, a first mounting limiting member is provided at the top of both the first side plate and the second side plate, the first mounting limiting member having a first limiting chamber, and the first insulation plate being installed in the first limiting chamber; a second mounting limiting member is provided at the bottom of both the first side plate and the second side plate, the second mounting limiting member having a second limiting chamber, and the second insulation plate being installed in the second limiting chamber.

[0008] In some embodiments, both the first and second mounting limiting members include a first limiting plate and a second limiting plate. The first and second limiting plates are arranged opposite to each other. With the longitudinal section of the outer shell body as the projection plane, the first limiting plate is disposed outside the second limiting plate. The first limiting plate is installed on the outer wall of the corresponding side plate or integrally formed with the corresponding side plate. The second limiting plate is installed on the corresponding side plate, and a corresponding limiting chamber is formed between the first and second limiting plates.

[0009] In some embodiments, the first limiting plate is a bent plate, which is formed by bending a corresponding side plate.

[0010] In some embodiments, the top plate and the bottom plate are respectively provided with stepped surfaces at both ends, and the first side plate and the second side plate respectively abut against the corresponding stepped surfaces.

[0011] In some embodiments, a sealant layer is provided at the connection between the top plate and the bottom plate and the first side plate and the second side plate.

[0012] In some embodiments, the top plate, the bottom plate, the first side plate, and the second side plate are all foamed boards. The foamed board includes an inner layer, an intermediate insulation layer, and an outer layer stacked from the inside out. The intermediate insulation layer is made of polyurethane, and the thickness of the inner layer and the outer layer is less than the thickness of the intermediate insulation layer.

[0013] In some embodiments, the first side plate and the second side plate are fixedly connected to the top plate and the bottom plate respectively by fasteners, and a reinforcing bracket is provided on the inner plate near the fasteners.

[0014] An indoor unit includes a housing structure, wherein the housing structure is as described above.

[0015] An air conditioner includes an indoor unit, wherein the indoor unit is the one described above.

[0016] The housing structure, indoor unit, and air conditioner provided by this utility model have the following beneficial effects:

[0017] This utility model's first and second insulation boards reduce cold bridges caused by direct contact between the boards. Installing insulation boards around the left and right side panels ensures good insulation at all contact surfaces, eliminating the need for additional boards. The first and second insulation boards are installed at the joints between the top and side panels, and between the bottom and side panels, effectively filling the gaps. Since the shell of the grain silo air conditioner needs to maintain good airtightness to prevent phosphine or nitrogen gas leakage, the insulation boards significantly reduce the risk of gas leakage. By enhancing airtightness, the insulation boards ensure that phosphine or nitrogen gas inside the grain silo will not leak out, thus protecting the safety of operators and preventing environmental pollution. Insulation panels possess excellent thermal insulation properties, effectively reducing the conduction of heat or cold. During the operation of grain silo air conditioning, insulation panels prevent external temperature changes from affecting the internal temperature and humidity of the grain silo, thus maintaining stable temperature and humidity conditions. Through their insulation effect, insulation panels reduce temperature fluctuations within the grain silo, ensuring that grain maintains suitable temperature and humidity during storage and preventing problems such as mold and pests caused by temperature changes. The installation of insulation panels enhances the overall structural tightness of the shell, making the connections between various components more robust, thereby improving the stability and service life of the shell. By reducing temperature and humidity fluctuations and gas leakage, insulation panels can effectively extend the service life of the grain silo air conditioning system and reduce equipment maintenance costs. Attached Figure Description

[0018] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the shell structure according to an embodiment of the present utility model;

[0020] Figure 2 This is a side view of the shell structure according to an embodiment of the present utility model;

[0021] Figure 3 This is a top view of the shell structure according to an embodiment of the present utility model;

[0022] Figure 4 This is a schematic diagram of the first mounting limiting member according to an embodiment of the present utility model;

[0023] Figure 5 This is a schematic diagram of the second mounting limiting member according to an embodiment of the present utility model;

[0024] Figure 6 for Figure 2Enlarged view of point A in the middle;

[0025] Figure 7 This is a schematic diagram of the inner layer, the middle insulation layer, and the outer layer of an embodiment of the present utility model;

[0026] Figure 8 This is a schematic diagram of the outdoor unit of an embodiment of the present utility model.

[0027] Attached Figures: 1-Outer shell; 11-Inner layer plate; 12-Intermediate insulation layer; 13-Outer layer plate; 101-First side plate; 102-Second side plate; 103-Top plate; 104-Bottom plate; 105-Step surface; 201-First insulation board; 202-Second insulation board; 31-First mounting limiting component; 311-First limiting chamber; 32-Second mounting limiting component; 321-Second limiting chamber; 301-First limiting plate; 302-Second limiting plate; 331-First support plate; 332-Second support plate; 4-Reinforcing support; 5-Return air vent; 6-Air outlet; 71-Upper evaporator; 72-Lower evaporator; 8-Drain tray; 9-Drain pipe. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0029] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0030] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used here to describe the spatial positional relationship of a device or feature as shown in the figure with other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation of the device as described in the figure. For example, if a device in the figure is inverted, a device described as "above" or "on top of" other devices or structures will subsequently be positioned as "below" or "under" other devices or structures.

[0031] See also Figures 1 to 7 As shown, according to an embodiment of the present invention, a shell structure is provided, which includes an outer shell body 1 and a heat insulation component; taking the longitudinal section of the outer shell body 1 as the projection plane, the outer shell body 1 includes a first side plate 101, a second side plate 102, a top plate 103, and a bottom plate 104. The first side plate 101 and the second side plate 102 are arranged opposite to each other. The two ends of the top plate 103 are respectively connected to the top of the first side plate 101 and the top of the second side plate 102, and the two ends of the bottom plate 104 are respectively the bottom of the first side plate 101 and the second side plate 102; the heat insulation component includes a first heat insulation plate 201 and a second heat insulation plate 202. The connection between the top plate 103 and the first side plate 101 and the connection between the top plate 103 and the second side plate 102 are respectively provided with the first heat insulation plate 201, and the connection between the bottom plate 104 and the first side plate 101 and the connection between the bottom plate 104 and the second side plate 102 are respectively provided with the second heat insulation plate 202.

[0032] It is worth noting that in this embodiment, the outer shell body 1 has a hexahedral structure and is provided with four side plates. That is, in addition to the first side plate 101 and the second side plate 102, two more side plates are provided. The four side plates together form the side wall of the outer shell body 1. Since not every side plate involves the installation of insulation boards, in this embodiment, the first side plate 101 and the second side plate 102 involve the installation of insulation boards. The first insulation board 201 and the second insulation board 202 are made of wood. The reason for using wood is that wood has a lower thermal conductivity than metal, which can reduce the impact of cold bridges on the unit. Insulation boards are provided around the first side plate 101 and the second side plate 102, which can ensure that each contact surface has a good insulation effect.

[0033] Specifically, the first side plate 101, the second side plate 102, and two other side plates are vertically fixed to form the basic frame of the shell. A top plate 103 and a bottom plate 104 are installed at the top and bottom of the first side plate 101 and the second side plate 102, respectively, forming a complete frame structure. A first insulation board 201 is installed at the connection between the top plate 103 and the side plate, and a second insulation board 202 is installed at the connection between the bottom plate 104 and the side plate. Installation structures for the insulation boards are pre-installed at the corresponding connections. After the first insulation board 201 and the second insulation board 202 are installed in place, it is ensured that the insulation boards are tightly fitted to the side plates, top plate 103, and bottom plate 104. Alternatively, the first insulation board 201 and the second installation board can be pre-installed on the first side plate 101 and the second side plate 102, or on the top plate 103 and the bottom plate 104. In this way, when all the other plates are installed, the first insulation board 201 and the second insulation board 202 are also installed in place.

[0034] In this embodiment, the first insulation board 201 and the second insulation board 202 reduce cold bridges caused by direct contact between the boards. The presence of these boards around the left and right side panels already ensures good insulation at all contact surfaces, eliminating the need for additional boards. The first and second insulation boards 201 and 202 are installed at the joints between the top plate 103 and the side panels, and between the bottom plate 104 and the side panels, effectively filling the gaps in these areas. Since the shell of the grain silo air conditioner needs to maintain good airtightness to prevent phosphine gas or nitrogen leakage, the filling effect of the insulation boards significantly reduces the risk of gas leakage. By enhancing airtightness, the insulation boards ensure that phosphine gas or nitrogen inside the grain silo will not leak out, thereby ensuring the safety of operators and preventing environmental pollution. Insulation panels possess excellent thermal insulation properties, effectively reducing the conduction of heat or cold. During the operation of grain silo air conditioning, insulation panels prevent external temperature changes from affecting the internal temperature and humidity of the grain silo, thus maintaining stable temperature and humidity conditions. Through their insulation effect, insulation panels reduce temperature fluctuations within the grain silo, ensuring that grain maintains suitable temperature and humidity during storage and preventing problems such as mold and pests caused by temperature changes. The installation of insulation panels enhances the overall structural tightness of the shell, making the connections between various components more robust, thereby improving the stability and service life of the shell. By reducing temperature and humidity fluctuations and gas leakage, insulation panels can effectively extend the service life of the grain silo air conditioning system and reduce equipment maintenance costs.

[0035] See also Figures 1 to 3As shown, the top of the first side plate 101 and the second side plate 102 are both provided with a first mounting limiting member 31, the first mounting limiting member 31 having a first limiting chamber 311, and the first insulation plate 201 is installed in the first limiting chamber 311; the bottom of the first side plate 101 and the second side plate 102 are both provided with a second mounting limiting member 32, the second mounting limiting member 32 having a second limiting chamber 321, and the second insulation plate 202 is installed in the second limiting chamber 321.

[0036] Specifically, the first side plate 101, the second side plate 102, and two other side plates are vertically fixed to form the basic frame of the shell. The first insulation plate 201 is inserted into the first limiting chamber 311, and the second insulation plate 202 is inserted into the second limiting chamber 321. The top plate 103 is installed on top of the first side plate 101 and the second side plate 102, ensuring that the connection between the top plate 103 and the side plate is tightly fitted. The bottom plate 104 is installed on the bottom of the first side plate 101 and the second side plate 102, similarly ensuring that the connection between the bottom plate 104 and the side plate is tightly fitted.

[0037] In this embodiment, the limiting chamber provides a precise installation position for the insulation board, ensuring that the insulation board can be accurately installed in the predetermined position and avoiding possible deviations during installation. The limiting chamber also allows the insulation board to be more firmly fixed in place after installation, reducing the risk of displacement or detachment due to vibration or external force. By inserting the insulation board into the limiting chamber, the gaps between the top plate 103 and the side plate, and between the bottom plate 104 and the side plate, can be effectively filled, reducing the risk of gas leakage. This design is more reliable than simple splicing and can significantly improve the airtightness of the shell. The insulation board has good thermal insulation properties, which can effectively reduce the conduction of heat or cold. By installing the insulation board in the limiting chamber, it can be ensured that the insulation board is tightly fitted with the top plate 103, the bottom plate 104, and the side plate, thereby reducing the impact of external environmental temperature changes on the internal temperature and humidity of the grain silo. In addition, the installation method of the insulation board (insertion into the limiting chamber) simplifies the installation process and improves installation efficiency. This setting makes the insulation board more stable during installation and reduces errors during installation. The insulation board is usually detachable, which provides convenience for the maintenance and repair of the shell. If the insulation board needs to be replaced or repaired, it can be easily disassembled and reinstalled without damaging the overall structure of the shell.

[0038] See also Figures 1 to 5As shown, both the first mounting limiting member 31 and the second mounting limiting member 32 include a first limiting plate 301 and a second limiting plate 302. The first limiting plate 301 and the second limiting plate 302 are arranged opposite to each other. With the longitudinal section of the outer shell body 1 as the projection plane, the first limiting plate 301 is disposed on the outside of the second limiting plate 302. The first limiting plate 301 is installed on the outer wall of the corresponding side plate or integrally formed with the corresponding side plate. The second limiting plate 302 is installed on the corresponding side plate. A corresponding limiting chamber is formed between the first limiting plate 301 and the second limiting plate 302.

[0039] In this embodiment, the limiting chamber between the first limiting plate 301 and the second limiting plate 302 provides a clear and fixed installation position for the insulation board, enabling the insulation board to be precisely installed in the predetermined position. This avoids potential deviations during installation, ensuring accuracy and consistency. This clear installation position makes the installation process simpler and faster, reducing installation time and labor intensity, and improving installation efficiency. The limiting chamber between the first limiting plate 301 and the second limiting plate 302 can be adjusted according to actual needs to accommodate insulation boards of different sizes. This flexibility allows the shell design to better adapt to different application scenarios and requirements, improving the versatility and adaptability of the design.

[0040] See also Figures 1 to 7 As shown, the first limiting plate 301 is a bent plate, which is formed by bending the corresponding side plate.

[0041] In this embodiment, the first limiting plate 301 is formed by bending the side plate, making the limiting plate and the side plate an integral structure, enhancing the overall structural integration of the shell. This integrated design reduces the number of parts and connection points, improving the stability and reliability of the structure. Since the limiting plate and the side plate are integrated, it reduces possible errors during assembly, ensures precise fit between the limiting plate and the side plate, and improves the overall assembly accuracy. Moreover, the bent plate increases the local strength and rigidity of the side plate, and the bent structure can better withstand the action of external forces, reducing deformation or damage caused by vibration or external forces, improving the overall strength of the shell. The integrated bent plate design makes the connection between the limiting plate and the side plate more secure, enhancing the stability of the entire shell and reducing failures caused by structural loosening or deformation. By integrating the limiting plate and side plate into one unit, the number of components requiring separate manufacturing and assembly is reduced, simplifying the manufacturing and assembly process and lowering production costs. Because the limiting plate and side plate are integrated, gaps and splicing points at the joints are reduced, improving airtightness. This design effectively reduces gas leakage, ensuring that phosphine or nitrogen gas within the grain silo does not leak out, thus protecting operator safety and environmental safety. Furthermore, the bending plate can be adjusted according to different shell and insulation panel sizes, increasing the flexibility and adaptability of the design, better meeting the needs of various application scenarios.

[0042] See also Figures 1 to 7 As shown, the top plate 103, bottom plate 104, first side plate 101, and second side plate 102 are all foamed boards. Each foamed board comprises an inner layer 11, a middle insulation layer 12, and an outer layer 13 stacked from the inside out. The middle insulation layer 12 is made of polyurethane, and the thicknesses of the inner layer 11 and outer layer 13 are both less than the thickness of the middle insulation layer 12. It is worth noting that in this embodiment, it is preferable that the top plate 103, bottom plate 104, first side plate 101, and second side plate 102 are all foamed boards. In other embodiments, the absence of a foamed board structure will not affect the installation of the first limiting plate 301 and the second limiting plate 302. The inner layer 11 and outer layer 13 are made of sheet metal with a thickness of 0.6 mm.

[0043] In this embodiment, polyurethane is a highly efficient thermal insulation material with a low thermal conductivity, effectively reducing the conduction of heat or cold. The thickness of the intermediate insulation layer 12 is greater than that of the inner layer 11 and the outer layer 13, further enhancing the thermal insulation effect and ensuring stable temperature and humidity within the grain silo. Through its efficient thermal insulation performance, the foamed board can reduce temperature fluctuations within the grain silo, preventing problems such as grain mold and pests caused by temperature changes, thereby extending the grain's storage period. The structure of the foamed board makes the connections between the boards tighter, reducing gaps and splicing points at joints and improving airtightness. This design effectively reduces gas leakage, ensuring that phosphine gas or nitrogen gas within the grain silo does not leak out, protecting the safety of operators and the environment. The structure of the foamed board also makes the entire shell relatively lightweight, facilitating transportation and installation. This lightweight design not only reduces transportation costs but also reduces labor intensity during installation. The three-layer structure of the foamed board (inner layer 11, intermediate insulation layer 12, and outer layer 13) provides good structural strength and rigidity. The polyurethane intermediate insulation layer 12 can withstand external forces, reducing deformation or damage caused by vibration or external forces, and improving the overall stability of the shell. The structure of the foam board effectively reduces deformation caused by temperature changes, ensuring the stability of the shell under different environmental conditions. The foam board can be customized according to different shell sizes and insulation requirements, improving the flexibility and adaptability of the design. This design can better meet different application scenarios and needs.

[0044] In one specific implementation, the second limiting plate 302 includes a first support plate 331 and a second support plate 332 welded to the side plate. The length of the first support plate 331 can extend along the length direction of the side plate, or it can be shorter and only installed at a partial position of the side plate. The first support plate 331 and the second support plate 332 are L-shaped. One side of the first support plate 331 is installed on the outer layer plate 13, and the other side of the first support plate 331 is opposite to the first limiting plate 301. One side of the second support plate 332 is installed on the inner layer plate 11, and the other side is also opposite to the first limiting plate 301. That is, the second limiting plate 302 is formed by two separate support plates, and the first support plate 331 and the second support plate 332 are detachably connected. The size of the limiting chamber can be adjusted by adjusting the installation position of the shell to accommodate insulation boards of different thicknesses. The first limiting plate 301 is formed by bending the corresponding side plate, and the size of the limiting chamber can also be flexibly adjusted by pre-adjusting the degree of bending.

[0045] In this embodiment, by adjusting the installation positions of the first support plate 331 and the second support plate 332, and by pre-adjusting the bending degree of the first limiting plate 301, the size of the limiting chamber can be flexibly adjusted to accommodate insulation boards of different thicknesses. This configuration greatly improves the versatility and adaptability of the shell, meeting the installation requirements of various insulation boards of different specifications. The split support plate configuration allows for flexible adjustment during installation according to actual needs, ensuring that the insulation board can be accurately installed in the predetermined position, improving the flexibility and accuracy of installation. The first support plate 331 and the second support plate 332 are L-shaped and are respectively installed on the outer layer plate 13 and the inner layer plate 11. This configuration increases the local strength and rigidity of the side plates, enabling them to better withstand external forces, reducing deformation or damage caused by vibration or external forces, and improving the overall stability of the shell. By enhancing structural stability, it reduces deformation caused by temperature changes or other external conditions, ensuring the stability of the shell under different environmental conditions.

[0046] As a specific implementation, since the first side plate 101 and the second side plate 102 are both foamed boards with a three-layer structure, the two ends of the inner layer plate 11 and the outer layer plate 13 are bent relative to each other to form the first limiting plate 301. The limiting cavity is not filled with the middle insulation layer 12, but is only used to place the insulation board.

[0047] In this embodiment, the first limiting plate 301 is formed by bending the inner layer plate 11 and the outer layer plate 13, forming an integral structure with the side plate. This enhances the structural integration of the entire shell. This integrated design reduces the number of parts and connection points, improving the stability and reliability of the structure. Since the limiting plate and the side plate are integral, it reduces possible errors during assembly, ensuring precise fit between the limiting plate and the side plate and improving the overall assembly accuracy. Because the limiting plate and the side plate are integral, it reduces gaps and splicing points at the joints, improving airtightness. This design effectively reduces gas leakage, ensuring that phosphine gas or nitrogen in the grain silo will not leak out, protecting the safety of operators and the environment.

[0048] See also Figures 1 to 7 As shown, the top plate 103 and the bottom plate 104 are respectively provided with stepped surfaces 105 at both ends, and the first side plate 101 and the second side plate 102 respectively abut against the corresponding stepped surfaces 105.

[0049] Specifically, since both the top plate 103 and the bottom plate 104 are foamed boards, preferably, the inner layer 11 of the top plate 103 and the bottom plate 104 protrudes into the inner cavity of the outer shell body 1, and the outer layer 13 is a flat structure, with the length of the inner layer 11 being less than the length of the outer layer 13, so that the two ends of the inner layer 11 and the outer layer 13 form stepped surfaces 105, and the two ends of the first side plate 101 and the second side plate 102 respectively abut against the stepped surfaces 105. In other embodiments, if the top plate 103 and the bottom plate 104 are single-layer structures, the middle part of the top plate 103 and the bottom plate 104 also protrudes into the inner cavity of the outer shell body 1.

[0050] In this embodiment, the stepped surface 105 allows the first side plate 101 and the second side plate 102 to fit tightly against the top plate 103 and the bottom plate 104, forming a more robust connection. This tight connection reduces structural loosening caused by vibration or external forces, improving the overall stability of the shell. The tight fit also reduces gaps between the side plates and the top and bottom plates 103 and 104, enhancing the overall structural integrity and reducing deformation caused by temperature changes or other external conditions. Furthermore, the tight fit reduces gaps between the side plates and the top and bottom plates 103 and 104, effectively reducing the possibility of gas leakage. This design significantly improves the airtightness of the shell, ensuring that phosphine or nitrogen gas inside the grain silo does not leak out, thus protecting the safety of operators and the environment. Finally, the tight fit reduces the conduction path of heat or cold, improving the insulation effect. By reducing the gaps between the side plates and the top plate 103 and bottom plate 104, the conduction of heat or cold is reduced, ensuring stable temperature and humidity within the grain silo. Through insulation, temperature fluctuations within the silo are reduced, preventing problems such as mold and pests caused by temperature changes, thereby extending the grain's storage period. The stepped surface 105 provides a clear assembly position for the side plates, allowing for precise installation in predetermined locations. This reduces potential deviations during assembly, improving accuracy and consistency. The clear assembly position simplifies and speeds up the assembly process, reducing assembly time and labor intensity, and increasing assembly efficiency.

[0051] See also Figures 1 to 7 As shown, a sealant layer is provided at the connection between the top plate 103 and the bottom plate 104 and the first side plate 101 and the second side plate 102.

[0052] In this embodiment, the sealant layer effectively fills tiny gaps at the joints, preventing gas leakage. By enhancing airtightness, the sealant layer ensures that phosphine or nitrogen gas inside the grain silo will not leak out, protecting the safety of operators and preventing environmental pollution. The sealant layer further reduces heat or cold conduction, improving insulation. By reducing heat loss at the joints, the sealant layer helps maintain stable temperature and humidity inside the grain silo. Through its insulation effect, the sealant layer reduces temperature fluctuations within the grain silo. The sealant layer not only provides a seal but also strengthens the connection between the top plate 103, bottom plate 104, and side plates. This strengthened connection better withstands external forces, reducing structural loosening or damage caused by vibration or external forces. By enhancing connection strength, the sealant layer reduces deformation caused by temperature changes or other external conditions, ensuring the stability of the shell under different environmental conditions. The sealant layer prevents moisture and corrosive gases from entering the joints, protecting the joints from corrosion and extending the shell's service life. The sealant layer effectively prevents moisture from entering the shell, maintaining a dry environment inside the grain silo and further ensuring the safety of grain storage.

[0053] See also Figures 1 to 7 As shown, the first side plate 101 and the second side plate 102 are fixedly connected to the top plate 103 and the bottom plate 104 respectively by fasteners. Directly using screws for fixing can easily lead to stripping of the threads, so a reinforcing bracket 4 is provided on the inner layer plate 11 near the fastener. The fastener is a bolt, and the reinforcing bracket 4 is L-shaped. Since a stepped surface 105 is formed between the inner layer plate 11 and the outer layer plate 13, the reinforcing bracket 4 is provided at the bend on the inner side of the inner layer plate 11.

[0054] In this embodiment, the reinforcing bracket 4 effectively disperses the stress generated during bolt tightening, making the connection more robust. The L-shaped reinforcing bracket 4 can better withstand the tensile and compressive forces during bolt tightening, reducing structural deformation caused by uneven tightening forces. By enhancing the strength of the connection, the reinforcing bracket 4 can effectively reduce structural loosening caused by vibration or external forces, improving the overall stability of the shell. The reinforcing bracket 4 can enhance the local rigidity of the inner layer plate 11, reducing deformation caused by tightening forces or external forces. Especially at the bends of the inner layer plate 11, the reinforcing bracket 4 can effectively prevent deformation at the bends due to stress, ensuring the integrity of the structure. By setting the reinforcing bracket 4 at key locations, the rigidity of the entire shell can be improved, enabling it to better withstand the effects of external forces and reducing deformation caused by temperature changes or other external conditions.

[0055] See also Figures 1 to 8As shown, an indoor unit includes a casing structure, which is the casing structure described above. The components of the indoor unit are mounted on the casing structure. The indoor unit includes an evaporator, which requires electrophoresis or uses aluminum tubing. The return air inlet 5 and the air outlet 6 of the indoor unit are connected to the grain silo via pipes. When the unit is running, both the indoor and outdoor units will start for normal cooling operation. A centrifugal fan in the indoor unit blows the air cooled by the upper evaporator 71 and lower evaporator 72 back out, through a guide plate, through the air outlet 6, and finally back into the grain silo. When air in the grain silo passes through the return air inlet 5, the filter screen inside the return air inlet 5 filters out impurities and dust, resulting in cleaner air. A sealed return air chamber is formed between the partition and the foam plate, ensuring that the air can only be cooled by passing through the evaporator. A water collection tray 8 is provided in the casing structure, and the water collection tray 8 is equipped with a drain pipe 9. The water collection tray 8 is located at the bottom of the evaporator and has a water baffle to prevent the centrifugal fan from sucking out water from the water collection tray 8 during operation.

[0056] As a specific implementation method, before installation, the fixed partitions around the evaporator need to be filled with sponge with a thickness of about 5mm. If this is still not enough, sealant should be applied to the gaps.

[0057] An air conditioner includes an indoor unit and an outdoor unit, wherein the indoor unit is the one described above.

[0058] It will be readily understood by those skilled in the art that the aforementioned advantageous methods can be freely combined and superimposed without conflict.

[0059] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model. The above are only preferred embodiments of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A shell structure, characterized in that, include: The outer shell (1) and the insulation component; With the longitudinal section of the outer shell body (1) as the projection plane, the outer shell body (1) includes a first side plate (101), a second side plate (102), a top plate (103) and a bottom plate (104). The first side plate (101) and the second side plate (102) are arranged opposite to each other. The two ends of the top plate (103) are respectively connected to the top of the first side plate (101) and the second side plate (102). The two ends of the bottom plate (104) are respectively the bottom of the first side plate (101) and the second side plate (102). The insulation component includes a first insulation board (201) and a second insulation board (202). The first insulation board (201) is provided at the connection between the top plate (103) and the first side plate (101) and at the connection between the top plate (103) and the second side plate (102). The second insulation board (202) is provided at the connection between the bottom plate (104) and the first side plate (101) and at the connection between the bottom plate (104) and the second side plate (102).

2. The shell structure according to claim 1, characterized in that, The top of the first side plate (101) and the second side plate (102) are provided with a first installation limiting member (31), the first installation limiting member (31) has a first limiting chamber (311), and the first insulation plate (201) is installed in the first limiting chamber (311); the bottom of the first side plate (101) and the second side plate (102) are provided with a second installation limiting member (32), the second installation limiting member (32) has a second limiting chamber (321), and the second insulation plate (202) is installed in the second limiting chamber (321).

3. The shell structure according to claim 2, characterized in that, Both the first mounting limiting member (31) and the second mounting limiting member (32) include a first limiting plate (301) and a second limiting plate (302). The first limiting plate (301) and the second limiting plate (302) are arranged opposite to each other. With the longitudinal section of the outer shell body (1) as the projection plane, the first limiting plate (301) is arranged on the outside of the second limiting plate (302). The first limiting plate (301) is installed on the outer wall of the corresponding side plate or integrally formed with the corresponding side plate. The second limiting plate (302) is installed on the corresponding side plate. A corresponding limiting chamber is formed between the first limiting plate (301) and the second limiting plate (302).

4. The shell structure according to claim 3, characterized in that, The first limiting plate (301) is a bent plate, which is formed by bending the corresponding side plate.

5. The shell structure according to claim 1, characterized in that, The top plate (103) and the bottom plate (104) are respectively provided with stepped surfaces (105) at both ends, and the first side plate (101) and the second side plate (102) respectively abut against the corresponding stepped surfaces (105).

6. The shell structure according to claim 1, characterized in that, A sealant layer is provided at the connection between the top plate (103) and the bottom plate (104) and the first side plate (101) and the second side plate (102).

7. The shell structure according to claim 1, characterized in that, The top plate (103), the bottom plate (104), the first side plate (101), and the second side plate (102) are all foamed boards. The foamed board includes an inner layer plate (11), an intermediate insulation layer (12), and an outer layer plate (13) stacked from the inside to the outside. The intermediate insulation layer (12) is made of polyurethane, and the thickness of the inner layer plate (11) and the outer layer plate (13) is less than the thickness of the intermediate insulation layer (12).

8. The shell structure according to claim 7, characterized in that, The first side plate (101) and the second side plate (102) are fixedly connected to the top plate (103) and the bottom plate (104) respectively by fasteners, and a reinforcing bracket (4) is provided on the inner layer plate (11) near the fastener.

9. An indoor unit, comprising a housing structure, characterized in that, The shell structure is the shell structure according to any one of claims 1 to 8.

10. An air conditioner, comprising an indoor unit, characterized in that, The indoor unit is the indoor unit as described in claim 9.

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