Grain air conditioner large displacement wind wheel structure

Abstract

The utility model provides a kind of grain air conditioner large displacement air wheel structure, including host computer, shell, air inlet, air outlet and motor, the host computer is fixed in shell interior, the air inlet and air outlet are all set up on shell, the evaporator of the host computer corresponds with air inlet, shell is fixedly connected with wind shell, the inside rotation of wind shell is connected with cross-flow fan, the air outlet corresponding with air outlet is set in wind shell, the air inlet is set in wind shell, wind shell is fixedly connected with the air duct corresponding with evaporator, the air inlet is located in air duct, the motor drives cross-flow fan rotation, reach the purpose that the range of air outlet is improved, the cold air sent is more uniform, and the purpose that coverage is wider.

Description

Technical Field

[0001] This utility model relates to grain air conditioning, and more particularly, to a large-displacement impeller structure for grain air conditioning. Background Technology

[0002] Currently, grain cooling technology is an important means of ensuring food security and improving storage quality. Existing grain cooling equipment, such as the grain cooling unit disclosed in Chinese Patent No. CN221992218U, typically includes a shell, an evaporator, and a blower. This unit uses the blower to deliver cold air, thereby cooling the grain pile.

[0003] However, existing air supply fans generally use centrifugal fans. The working principle of this type of fan is: air is drawn in axially from the center of the impeller, and then expelled outwards by centrifugal force through high-speed rotating blades. This design results in an inherent defect in its airflow distribution: the airflow concentrates from a small area and diffuses outwards, causing the area with the strongest air pressure at the outlet to be located directly opposite the outlet, while the air speed and pressure on the sides and edges are significantly reduced.

[0004] In practical applications of grain cooling, this uneven airflow distribution presents significant problems: when cold air blows onto a large grain pile, the airflow cannot evenly cover all areas, easily creating "ventilation dead zones." In these areas with insufficient airflow, the grain easily accumulates moisture and heats up due to the lack of effective cooling and ventilation, thus greatly increasing the risk of mold, spoilage, and pest infestation. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a large-displacement impeller structure for grain air conditioners, so as to improve the air outlet range and make the delivered cold air more uniform and cover a wider area.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is: a large-displacement impeller structure for a grain air conditioner, including a main unit, a housing, an air inlet, an air outlet, and a motor. The main unit is fixed inside the housing. The air inlet and air outlet are both opened on the housing. The evaporator of the main unit corresponds to the air inlet. A fan casing is fixedly connected inside the housing. A cross-flow impeller is rotatably connected inside the fan casing. An air outlet groove corresponding to the air outlet is opened on the fan casing. An air inlet groove is opened on the fan casing. A ventilation pipe corresponding to the evaporator is fixedly connected to the fan casing. The air inlet groove is located inside the ventilation pipe. The motor drives the cross-flow impeller to rotate.

[0007] To achieve the above technical solution, a motor drives a cross-flow fan to rotate at high speed inside the casing. External air enters the main unit through the air inlet, flows through the evaporator for cooling, and is then drawn into the cross-flow fan through the air inlet duct connected to the evaporator. Driven by the blades in the cross-flow fan, the cooled airflow passes laterally through the fan and is finally discharged uniformly in a sheet-like manner from the air outlet duct and the air outlet of the casing. By adopting a cross-flow fan structure, a wide-coverage, uniformly distributed airflow can be generated. This effectively solves the "ventilation dead zone" problem caused by concentrated airflow in traditional centrifugal fans, enabling comprehensive and homogeneous cooling of large grain piles, thereby significantly improving the safety and quality of grain storage.

[0008] As a preferred embodiment of this utility model, the cross-flow impeller includes a connecting end plate, a supporting end plate, blades, and a supporting shaft. The supporting shaft is fixed to the supporting end plate and rotatably connected to the inner wall of the wind casing. A connecting sleeve is connected to the connecting end plate, and the inner wall of the connecting sleeve is connected to the power shaft of the motor. One end of each of the multiple blades is connected to the connecting end plate, and the other end is connected to the supporting end plate. The connecting end plate, supporting end plate, supporting shaft, and power shaft are all coaxially arranged, and the multiple blades are evenly distributed along the axis of the connecting end plate.

[0009] To achieve the above technical solution, the motor's power shaft is coupled to the connecting sleeve and transmits power, driving the entire cross-flow wind turbine, composed of connecting end plates, multiple blades, and supporting end plates, to rotate stably around its coaxial central axis. The supporting shaft provides support within the wind turbine casing, ensuring the smooth rotation of the wind turbine. The specific structure of the cross-flow wind turbine is clearly defined; through the coaxial design of the end plates, blades, and shaft system, the structural stability and dynamic balance of the wind turbine during high-speed rotation are ensured.

[0010] As a preferred embodiment of the present invention, the cross-flow wind turbine further includes a reinforcing ring, which is located between the connecting end plate and the supporting end plate. The reinforcing ring is coaxially arranged with the connecting end plate and is fixedly connected to all blades.

[0011] The above technical solution, achieved by adding reinforcing rings, significantly enhances the overall structural rigidity and strength of the cross-flow wind turbine. This effectively suppresses radial deformation that may occur in long blades during high-speed rotation, ensuring the stability of blade spacing and smooth operation. This further reduces operating noise, extends the equipment's service life, and guarantees structural reliability under continuous high-load conditions.

[0012] In a preferred embodiment of this utility model, a sliding hole is provided on the connecting end plate, the sliding hole is coaxially arranged with the connecting end plate, a connecting groove is provided on the inner wall of the sliding hole, the connecting sleeve is slidably connected in the sliding hole, a connecting rod is fixedly connected to the outer wall of the connecting sleeve and slidably connected in the connecting groove, and an elastic element is connected between the connecting sleeve and the connecting end plate.

[0013] To achieve the above technical solution, during maintenance or replacement of the cross-flow fan impeller, the operator can apply an axial external force away from the motor to the connecting sleeve to overcome the elastic force of the elastic element, causing the connecting sleeve to slide outward along the sliding hole of the connecting end plate. This sliding process will completely separate the inner hole of the connecting sleeve from the motor's drive shaft. During installation, the operation is reversed; the restoring force of the elastic element will automatically push the connecting sleeve and drive shaft to re-engage. Under normal operating conditions, the elastic element ensures that the connecting sleeve and drive shaft maintain stable engagement at all times. Its core technical advantage lies in providing a fast, tool-free power separation and engagement mechanism. This greatly simplifies the disassembly and assembly process of the cross-flow fan impeller, significantly improves the efficiency of maintenance and replacement operations, and reduces maintenance difficulty and time costs.

[0014] In a preferred embodiment of this utility model, a first retaining ring and a second retaining ring are fixedly connected to the outer wall of the connecting sleeve. The first retaining ring and the second retaining ring are respectively located on both sides of the connecting end plate. The first retaining ring is located between the motor and the connecting sleeve, and the elastic element is located between the first retaining ring and the connecting end plate.

[0015] To achieve the above technical solution, when the connecting sleeve slides outward to the end of its predetermined stroke, the second retaining ring will contact the connecting end plate, thereby limiting its movement and preventing the connecting sleeve from continuing to move outward and detaching from the connecting end plate. During normal operation, the first retaining ring acts as a support surface for the elastic element, transmitting its preload and ensuring a stable connection. The first retaining ring ensures effective assembly and preload of the elastic element; the second retaining ring constitutes a safety limit, preventing the connecting sleeve from accidentally detaching during disassembly.

[0016] As a preferred embodiment of this utility model, the outer wall of the connecting sleeve is provided with a mounting hole, and an auxiliary bolt is threaded onto the mounting hole. The auxiliary bolt is used to abut against the outer wall of the power shaft.

[0017] To achieve the above technical solution, after the connecting sleeve and the power shaft are axially engaged, the operator can rotate the auxiliary bolt to advance it within the threaded hole until its end abuts against the outer wall of the power shaft. This operation locks the connecting sleeve and the power shaft circumferentially, forming a rigid torque transmission path. Before disassembling the impeller, simply loosen this auxiliary bolt to release the lock, allowing the connecting sleeve to slide axially. The abutting action of the auxiliary bolt effectively prevents relative rotation or slippage between the connecting sleeve and the power shaft during power transmission, ensuring that the motor torque can be transmitted to the cross-flow impeller without loss and with high efficiency.

[0018] As a preferred embodiment of this utility model, a positioning plane is provided on the outer wall of the power shaft, and the auxiliary bolt abuts against the positioning plane.

[0019] To achieve the above technical solution, the end of the auxiliary bolt is precisely aligned and pressed against the positioning plane of the drive shaft. This surface contact locking method allows the pressure applied by the auxiliary bolt to be effectively converted into mechanical resistance against rotation. Compared to line contact locking on a cylindrical surface, surface contact prevents damage to the drive shaft surface due to slippage under high torque. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the external structure of this utility model;

[0021] Figure 2 To illustrate the structural diagram of the ventilation duct;

[0022] Figure 3 To illustrate the structural diagram of the wind shell;

[0023] Figure 4 A cross-sectional schematic diagram to illustrate the wind shell;

[0024] Figure 5 To illustrate the structural diagram of the cross-flow wind turbine;

[0025] Figure 6 This is a schematic diagram illustrating the exploded structure between the cross-flow fan rotor and the motor;

[0026] Figure 7 This is a schematic diagram illustrating the structure of the connecting sleeve.

[0027] Reference numerals: 1. Main unit; 2. Housing; 3. Air inlet; 4. Air outlet; 5. Motor; 6. Evaporator; 7. Condenser; 8. Fan casing; 9. Air outlet slot; 10. Air inlet slot; 11. Ventilation duct; 12. Cross-flow fan wheel; 13. Connecting end plate; 14. Supporting end plate; 15. Blade; 16. Support shaft; 17. Connecting sleeve; 18. Reinforcing ring; 19. Sliding hole; 20. Connecting groove; 21. Connecting rod; 22. First retaining ring; 23. Second retaining ring; 24. Elastic element; 25. Mounting hole; 26. Auxiliary bolt; 27. Positioning plane; 28. Power shaft; Detailed Implementation

[0028] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, so that the technical solution of this utility model can be more easily understood and mastered.

[0029] A large-displacement impeller structure for a grain-growing air conditioner includes a main unit 1, a casing 2, an air inlet 3, an air outlet 4, and a motor 5. The main unit 1 is an air conditioner, i.e., prior art, and includes an evaporator 6, a condenser 7, a compressor, and an expansion valve. The main unit 1 is fixed inside the casing 2, and both the air inlet 3 and the air outlet 4 are located on the casing 2.

[0030] In this design, the evaporator 6 of the main unit 1 corresponds to the air inlet 3. A heat dissipation vent is provided on the outer casing, corresponding to the condenser 7. A fan casing 8 is fixedly connected inside the casing 2, and a cross-flow fan 12 is rotatably connected inside the fan casing 8. An air outlet slot 9 corresponding to the air outlet 4 is provided on the front side of the fan casing 8, and an air inlet slot 10 is provided on the upper side of the fan casing 8. A ventilation pipe 11 corresponding to the evaporator 6 is fixedly connected to the fan casing 8, and the air inlet slot 10 is located inside the ventilation pipe 11. The motor 5 drives the cross-flow fan 12 to rotate.

[0031] The cross-flow impeller 12 includes a connecting end plate 13, a supporting end plate 14, blades 15, and a supporting shaft 16. The supporting shaft 16 is fixed to the supporting end plate 14 and rotatably connected to the inner wall of the casing 8. A connecting sleeve 17 is connected to the connecting end plate 13. The inner wall of the connecting sleeve 17 is connected to the power shaft 28 of the motor 5. One end of the blade 15 is fixedly connected to the connecting end plate 13, and the other end is fixedly connected to the supporting end plate 14. The connecting end plate 13, supporting end plate 14, supporting shaft 16, power shaft 28, and connecting sleeve 17 are all coaxially arranged. Multiple blades 15 are evenly distributed along the axis of the connecting end plate 13.

[0032] The cross-flow impeller 12 also includes a reinforcing ring 18. The reinforcing ring 18 is located between the connecting end plate 13 and the supporting end plate 14. The reinforcing ring 18 is coaxially arranged with the connecting end plate 13 and is fixedly connected to all the blades 15.

[0033] A circular sliding hole 19 is formed on the connecting end plate 13, and the sliding hole 19 is coaxially arranged with the connecting end plate 13. A connecting groove 20 is formed on the inner wall of the sliding hole 19, and the connecting groove 20 has a square cross-section. A connecting sleeve 17 is slidably connected in the sliding hole 19. A connecting rod 21, which is slidably connected in the connecting groove 20, is fixedly connected to the outer wall of the connecting sleeve 17.

[0034] A first retaining ring 22 and a second retaining ring 23 are fixedly connected to the outer wall of the connecting sleeve 17. The outer diameters of both the first retaining ring 22 and the second retaining ring 23 are larger than the inner diameter of the sliding hole 19. The first retaining ring 22 and the second retaining ring 23 are coaxially arranged with the connecting sleeve 17. The first retaining ring 22 and the second retaining ring 23 are located on both sides of the connecting end plate 13. The first retaining ring 22 is located between the motor 5 and the connecting sleeve 17, and the elastic element 24 is located between the first retaining ring 22 and the connecting end plate 13. The elastic element 24 is sleeved on the outside of the connecting sleeve 17. The elastic element 24 is a spring. The two ends of the elastic element 24 are fixedly connected to the connecting end plate 13 and the first retaining ring 22, respectively.

[0035] A mounting hole 25 is provided on the outer wall of the connecting sleeve 17, and an auxiliary bolt 26 is threaded onto the mounting hole 25. A positioning plane 27 is provided on the outer wall of the drive shaft 28, and the auxiliary bolt 26 abuts against the positioning plane 27.

[0036] Of course, the above are just typical examples of this utility model. In addition, this utility model may have many other specific implementation methods. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed by this utility model.

Claims

1. A large-displacement impeller structure for a grain air conditioner, comprising a main unit (1), a casing (2), an air inlet (3), an air outlet (4), and a motor (5), wherein the main unit (1) is fixed inside the casing (2), the air inlet (3) and the air outlet (4) are both located on the casing (2), and the evaporator (6) of the main unit (1) corresponds to the air inlet (3), characterized in that: A fan housing (8) is fixedly connected inside the housing (2). A cross-flow fan wheel (12) is rotatably connected inside the fan housing (8). An air outlet groove (9) corresponding to the air outlet (4) is opened on the fan housing (8). An air inlet groove (10) is opened on the fan housing (8). A ventilation pipe (11) corresponding to the evaporator (6) is fixedly connected to the fan housing (8). The air inlet groove (10) is located inside the ventilation pipe (11). The motor (5) drives the cross-flow fan wheel (12) to rotate.

2. The grain air conditioning large-displacement impeller structure according to claim 1, characterized in that: The cross-flow impeller (12) includes a connecting end plate (13), a supporting end plate (14), blades (15), and a supporting shaft (16). The supporting shaft (16) is fixed on the supporting end plate (14) and rotatably connected to the inner wall of the wind shell (8). A connecting sleeve (17) is connected to the connecting end plate (13). The inner wall of the connecting sleeve (17) is connected to the power shaft (28) of the motor (5). One end of each of the multiple blades (15) is connected to the connecting end plate (13) and the other end is connected to the supporting end plate (14). The connecting end plate (13), the supporting end plate (14), the supporting shaft (16), and the power shaft (28) are all coaxially arranged. The multiple blades (15) are evenly distributed along the axis of the connecting end plate (13).

3. The grain air conditioning large-displacement impeller structure according to claim 1, characterized in that: The cross-flow impeller (12) also includes a reinforcing ring (18), which is located between the connecting end plate (13) and the supporting end plate (14). The reinforcing ring (18) is coaxially arranged with the connecting end plate (13) and is fixedly connected to all blades (15).

4. The grain air conditioning large-displacement impeller structure according to claim 2, characterized in that: The connecting end plate (13) has a sliding hole (19) and is coaxially arranged with the connecting end plate (13). A connecting groove (20) is provided on the inner wall of the sliding hole (19). The connecting sleeve (17) is slidably connected in the sliding hole (19). A connecting rod (21) is fixedly connected to the outer wall of the connecting sleeve (17) and is slidably connected in the connecting groove (20). An elastic element (24) is connected between the connecting sleeve (17) and the connecting end plate (13).

5. The grain air conditioning large-displacement impeller structure according to claim 4, characterized in that: A first retaining ring (22) and a second retaining ring (23) are fixedly connected to the outer wall of the connecting sleeve (17). The first retaining ring (22) and the second retaining ring (23) are located on both sides of the connecting end plate (13). The first retaining ring (22) is located between the motor (5) and the connecting sleeve (17). The elastic element (24) is located between the first retaining ring (22) and the connecting end plate (13).

6. The grain air conditioning large-displacement impeller structure according to claim 5, characterized in that: The outer wall of the connecting sleeve (17) is provided with a mounting hole (25), and an auxiliary bolt (26) is threaded onto the mounting hole (25). The auxiliary bolt (26) is used to abut against the outer wall of the power shaft (28).

7. The large-displacement impeller structure for a grain air conditioner according to claim 6, characterized in that: A positioning plane (27) is provided on the outer wall of the power shaft (28), and the auxiliary bolt (26) abuts against the positioning plane (27).

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