Special anti-explosion air conditioner for squat silo

Abstract

The utility model relates to a special anti-explosion air conditioner for a squat silo, which effectively solves the problem that a granary air conditioner is easy to cause dust explosion. According to the technical scheme, the air conditioner comprises a shell, an electric control system, an air supply system and a refrigerating system, a vertical partition plate is installed in the shell and divides the shell into a first cavity and a second cavity which are independent of each other, the first cavity is a closed space, and the electric control system is installed in the first cavity; the air supply system comprises a cylindrical cross-flow fan, the cross-flow fan is located in the second cavity, one end of a rotating shaft of the cross-flow fan penetrates through the partition plate, extends into the first cavity and is connected with a driving motor, and a sealing unit is installed between the rotating shaft and the partition plate; the refrigerating system comprises a copper pipe, and the copper pipe penetrates through the first cavity from the outside of the shell, then enters the second cavity, is arranged in the second cavity in an S shape, then penetrates through the first cavity and penetrates out of the shell; dust explosion caused by a circuit can be effectively avoided, humidity change in the bin can not be caused, the structure is simple, and economical and practical effects are achieved.

Description

Technical Field

[0001] The utility model relates to the field of refrigeration equipment, in particular to a special explosion-proof air conditioner for shallow silos. Background Art

[0002] Shallow silos are a commonly used grain storage warehouse that requires temperature control through air conditioning to provide suitable temperature conditions for grain storage. Granaries are often exposed to a high concentration of dust, and the air conditioning circuit is a major hidden danger of dust explosions. The invention patent with application number: CN202311216386.5 discloses a special explosion-proof air-conditioning indoor unit for use in high-temperature dust environments. It filters the air intake of the air conditioner through a water storage filter to reduce the dust concentration entering the air conditioner. Since this patent requires the installation of water supply, water distribution and drainage pipelines, the structure is too complicated and the absorbent sponge needs to be replaced frequently, which is inconvenient to use. In addition, the water filtration dust removal method will cause changes in the humidity in the warehouse, which is not conducive to the control of the humidity in the granary. Summary of the Invention

[0003] The utility model provides a special explosion-proof air conditioner for shallow silos, aiming to solve the problem that the air conditioner in the silo is prone to cause dust explosion.

[0004] The technical solution includes a shell, an electronic control system, an air supply system and a refrigeration system. A vertical partition is installed in the shell, which divides the shell into a first chamber and a second chamber that are independent of each other. The first chamber is a closed space, and the second chamber has an air inlet at the top and an air outlet at the bottom. The electronic control system is installed in the first chamber. The air supply system includes a cylindrical cross-flow fan, which is located in the second chamber. One end of the rotating shaft of the cross-flow fan passes through the partition and extends into the first chamber and is connected to a drive motor. A sealing unit is installed between the rotating shaft and the partition. The refrigeration system includes a copper pipe, which passes through the first chamber from the outside of the shell and then enters the second chamber, and is arranged in an S shape on the outside of the cross-flow fan in the second chamber, and then passes through the first chamber and out of the shell. An insulating sleeve is installed on the section of the copper pipe passing through the first chamber.

[0005] The sealing unit includes a stepped hole opened on the partition, the rotating shaft penetrates into the first chamber through the stepped hole, a sealing ring is installed between the outer wall of the rotating shaft and the inner wall of the stepped hole, an annular sleeve is screwed on the end of the stepped hole close to the second chamber, and a compression spring is installed between the annular sleeve and the sealing ring, which presses the sealing ring against the stepped surface of the stepped hole.

[0006] A heat-conducting sleeve is sleeved on the pipe section of the copper pipe that passes through the first chamber.

[0007] A plurality of heat conducting plates are fixed on the outer wall of the heat conducting sleeve.

[0008] The air inlet is provided with a dust filter plate, which is fixed on the shell via screws.

[0009] The utility model can effectively avoid dust explosion caused by circuits, will not cause humidity changes in the warehouse, has a simple structure, and is economical and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a main sectional view of the present utility model.

[0011] Figure 2 for Figure 1 Enlarged view of position A in the middle.

[0012] Figure 3 for Figure 1 Enlarged view of position B in the middle. DETAILED DESCRIPTION

[0013] In conjunction with the accompanying drawings, the utility model includes a shell 1, an electronic control system 2, an air supply system and a refrigeration system. The electronic control system 2 controls the operation of the air conditioner. A vertical partition 3 is installed in the shell 1. The partition 3 divides the shell 1 into a first chamber 4 and a second chamber 5 that are independent of each other. The first chamber 4 is a closed space. The second chamber 5 has an air inlet 6 on the top and an air outlet 7 on the bottom; the electronic control system 2 is installed in the first chamber 4. The electronic control system 2 does not come into contact with the dust environment and can avoid dust explosions caused by the circuit; the air supply system includes a cylindrical cross-flow fan 8, which is located in the second chamber 5. One end of the rotating shaft 9 of the cross-flow fan 8 passes through the partition 3 and extends into the first chamber 4 and is connected to a drive motor 10. The drive motor 10 drives the cross-flow fan The fan 8 rotates, sucking air into the shell 1 from the air inlet 6 and then blowing it out from the air outlet 7. A sealing unit is installed between the rotating shaft 9 and the partition 3; the refrigeration system includes a copper tube 11, which passes through the first chamber 4 from the outside of the shell 1 and then enters the second chamber 5, and is arranged in an S shape on the outside of the cross-flow fan 8 in the second chamber 5, and then passes through the first chamber 4 and out of the shell 1. The positions where the copper tube 11 enters and exits the first chamber 4 are sealed with sealant. The copper tube 11 exchanges heat with the air sucked into the shell 1, so that the air is cooled and then blown out of the shell 1 for cooling; an insulating sleeve 12 is installed on the section of the copper tube 11 passing through the first chamber 4 to prevent the heat absorbed by the copper tube 11 in the second chamber 5 from dissipating into the first chamber 4.

[0014] The sealing unit includes a stepped hole 13 opened on the partition 3, the rotating shaft 9 passes through the stepped hole 13 into the first chamber 4, and the rotating shaft 9 cooperates with the stepped hole 13 through a bearing, and a sealing ring 14 is installed between the outer wall of the rotating shaft 9 and the inner wall of the stepped hole 13. An annular sleeve 15 is screwed on the end of the stepped hole 13 close to the second chamber 5, and a compression spring 16 is installed between the annular sleeve 15 and the sealing ring 14. The compression spring 16 presses the sealing ring 14 on the stepped surface of the stepped hole 13. Under the extrusion action of the compression spring 16, the sealing ring 14 expands radially and seals with the outer wall of the rotating shaft 9 and the inner wall of the stepped hole 13, and the preload force of the compression spring 16 can compensate for the wear of the sealing ring 14.

[0015] A heat-conducting sleeve 17 is mounted on the section of the copper tube 11 that penetrates the first chamber 4. The heat-conducting sleeve 17 can improve the heat exchange efficiency between the low-temperature refrigerant in the copper tube 11 and the first chamber 4, cool the first chamber 4, and prevent the temperature in the first chamber 4 from continuing to rise due to heat generated by the electronic control system 2 and the drive motor 10.

[0016] A plurality of heat conducting plates 18 are fixed to the outer wall of the heat conducting sleeve 17 , which can further improve the heat exchange efficiency between the first chamber 4 and the copper tube 11 .

[0017] The air inlet 6 is provided with a dust filter plate 19, which can prevent a large amount of dust from entering the housing 1, and prevent the cross-flow fan 8 and the copper tube 11 from being covered with dust, thereby reducing the air supply volume and heat exchange efficiency; the dust filter plate 19 is fixed to the housing 1 by screws and can be removed for cleaning or replacement when it is seriously clogged.

[0018] When the present invention is in use, the driving motor 10 drives the cross-flow fan 8 to rotate to supply air, and the refrigerant first passes through the first chamber 4 along the copper tube 11, and cools the first chamber 4 through the heat-conducting sleeve 17 and the heat-conducting plate 18 in the first chamber 4, and then enters the second chamber 5, exchanges heat with the air inhaled by the cross-flow fan 8 to cool the air, and finally flows back through the first chamber 4. When flowing back through the first chamber 4, the temperature of the refrigerant rises through heat exchange in the second chamber 5, and the heat-insulating sleeve 12 can prevent the copper tube 11 from dissipating heat into the first chamber 4.

[0019] Under the pressure of the compression spring 16, the sealing ring 14 can automatically compensate for wear and always maintain a good contact and sealing state with the outer wall of the rotating shaft 9 and the inner wall of the stepped hole 13. When the pressure of the compression spring 16 is insufficient, the compression spring 16 can be further compressed by screwing the annular sleeve 15 inward.

[0020] The utility model completely seals and isolates the electric control system 2 in the first chamber 4, so that the circuit is completely out of contact with the dust environment, which can effectively prevent the circuit from causing dust explosions. The copper tube 11 is used to cool the first chamber 4 to avoid overheating of the circuit, ensuring the safe operation of the equipment without causing changes in the humidity in the warehouse. The utility model has a simple structure and is economical and practical.

Claims

1. A special explosion-proof air conditioner for a shallow silo, comprising a housing (1), an electric control system (2), an air supply system and a refrigeration system, characterized in that: A vertical partition (3) is installed in the shell (1), and the partition (3) divides the shell (1) into a first chamber (4) and a second chamber (5) which are independent of each other. The first chamber (4) is a closed space, and the second chamber (5) has an air inlet (6) at the top and an air outlet (7) at the bottom. The electric control system (2) is installed in the first chamber (4). The air supply system includes a cylindrical cross-flow fan (8), which is located in the second chamber (5). One end of the rotating shaft (9) of the cross-flow fan (8) passes through the partition (3). ) extends into the first chamber (4) and is connected to a drive motor (10), and a sealing unit is installed between the rotating shaft (9) and the partition (3); the refrigeration system includes a copper tube (11), the copper tube (11) passes through the first chamber (4) from the outside of the shell (1) and enters the second chamber (5), and is arranged in an S shape on the outside of the cross-flow fan (8) in the second chamber (5), and then passes through the first chamber (4) and passes out of the shell (1); a heat insulating sleeve (12) is set on the section of the copper tube (11) passing through the first chamber (4).

2. The explosion-proof air conditioner for shallow silos according to claim 1 is characterized in that: The sealing unit includes a stepped hole (13) formed on the partition (3), the rotating shaft (9) penetrates into the first chamber (4) through the stepped hole (13), a sealing ring (14) is installed between the outer wall of the rotating shaft (9) and the inner wall of the stepped hole (13), an annular sleeve (15) is screwed onto one end of the stepped hole (13) close to the second chamber (5), a compression spring (16) is installed between the annular sleeve (15) and the sealing ring (14), and the compression spring (16) presses the sealing ring (14) against the stepped surface of the stepped hole (13).

3. The explosion-proof air conditioner for shallow silos according to claim 1 is characterized in that: A heat-conducting sleeve (17) is sleeved on the section of the copper tube (11) that passes through the first chamber (4).

4. The explosion-proof air conditioner for shallow silos according to claim 3 is characterized in that: A plurality of heat conducting plates (18) are fixed to the outer wall of the heat conducting sleeve (17).

5. The explosion-proof air conditioner for shallow silos according to claim 1 is characterized in that: The air inlet (6) is provided with a dust filter plate (19), which is fixed to the housing (1) via screws.

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