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CN-224214407-U - Efficient energy-saving cooling fan for agricultural machine air conditioner

CN224214407UCN 224214407 UCN224214407 UCN 224214407UCN-224214407-U

Abstract

The utility model discloses a high-efficiency energy-saving cooling fan for an agricultural machine air conditioner, which relates to the field of air conditioners for agricultural machines and aims to solve the problem that sundries accumulated between an impeller and a motor in the prior art affect the normal operation of the fan; the impeller comprises a shaft disc and blades, the blades are arranged on the side wall of the shaft disc, a gap for discharging sundries is further formed in the side wall of the shaft disc, and the gap is formed in the shaft disc of the impeller, so that sundries which invade the inner side of the fan impeller are discharged from the gap along with air flow under the action of centrifugal force, the sundries cannot be continuously accumulated on the inner side of the impeller, the problems of difficult starting of a cooling fan, current increase and locked rotation are avoided, and the working efficiency of the whole air conditioning system is higher.

Inventors

  • CHEN KUN
  • TIAN HONGGUANG
  • DONG YANAN

Assignees

  • 豫新汽车热管理科技有限公司

Dates

Publication Date
20260508
Application Date
20250609

Claims (4)

  1. 1. The efficient energy-saving cooling fan for the agricultural machinery air conditioner is characterized by comprising a direct current motor (2), an outer frame (3) and an impeller (4), wherein the outer frame (3) is connected with the direct current motor (2) through a screw (1), the output end of the direct current motor (2) is connected with the impeller (4) through a nut (5), and an installation hole (43) matched with the output end of the direct current motor (2) is formed in the impeller (4); The impeller (4) comprises a shaft disc (41) and fan blades (42), the shaft disc (41) is a cylindrical shell with one transparent side, the transparent end of the shaft disc (41) corresponds to the position of the outer frame (3), the fan blades (42) are arranged on the side wall of the shaft disc (41), a gap (44) for discharging sundries is further formed in the side wall of the shaft disc (41), and the gap (44) is located between the adjacent fan blades (42); The inner side of the shaft disc (41) is also provided with reinforcing ribs (45), three groups of reinforcing ribs (45) are arranged at the root of each fan blade (42), and the height of each reinforcing rib (45) is gradually increased along the rotation direction of the impeller (4).
  2. 2. The efficient and energy-saving cooling fan for agricultural machine air conditioner of claim 1, wherein seven groups of blades (42) are arranged and annularly arrayed around the shaft disc (41), the blades (42) are forward-bent blades, and the inclination angle of the blades ranges from 15 degrees to 42 degrees.
  3. 3. The efficient and energy-saving cooling fan for an agricultural machine air conditioner of claim 1, wherein the notch (44) is in an inverted triangle shape, a short side of the notch (44) forms an included angle of 90 degrees with the bottom of the shaft disc (41), and a long side of the notch (44) forms an obtuse angle of 140 degrees with the bottom of the shaft disc (41).
  4. 4. The efficient and energy-saving cooling fan for an agricultural machine air conditioner of claim 3, wherein the junction of two sides of the notch (44) adopts an arc transition with a radius of 5mm, and the arc area of the notch (44) is lower than the inner bottom of the shaft disc (41).

Description

Efficient energy-saving cooling fan for agricultural machine air conditioner Technical Field The utility model relates to the technical field of air conditioners for agricultural machinery, in particular to a high-efficiency energy-saving cooling fan for an air conditioner for agricultural machinery. Background Existing cooling fans of air conditioners in agricultural machinery are often exposed to complex environments of high dust, crop debris, and grass clippings during operation. Because the protection structure of the air inlet side of the existing cooling fan adopts an open grid or large wave distance condenser design, and no active impurity removing mechanism is adopted, small-particle-size impurities are continuously invaded into the bottom of the inner side of the fan impeller and gaps between the impeller and the direct current motor, if the impurities cannot be discharged in time, the impurities can be agglomerated after a certain amount of impurities are accumulated, the problems of difficult starting of the cooling fan, current increase and the like are caused, the rotation blockage is seriously caused, the heat dissipation is influenced, and the air conditioning efficiency is further reduced or even fails. Disclosure of utility model The utility model aims to overcome the existing defects, and provides the efficient energy-saving cooling fan for the agricultural machinery air conditioner, which can effectively solve the problems in the background technology. In order to achieve the aim, the utility model discloses a high-efficiency energy-saving cooling fan for an agricultural machine air conditioner, which adopts the technical scheme that the high-efficiency energy-saving cooling fan comprises a direct current motor, an outer frame and an impeller, wherein the outer frame is connected with the direct current motor through a screw, the output end of the direct current motor is connected with the impeller through a nut, and a mounting hole matched with the output end of the direct current motor is formed in the impeller; The impeller comprises a shaft disc and blades, the shaft disc is a cylindrical shell with one transparent side, the transparent end of the shaft disc corresponds to the outer frame, the blades are arranged on the side wall of the shaft disc, gaps for discharging sundries are further formed in the side wall of the shaft disc, the gaps are located between the adjacent blades, the gaps are formed in the shaft disc of the impeller, sundries which invade the inner side of the fan impeller are enabled to be under the action of centrifugal force, the sundries cannot continuously accumulated in the inner side of the impeller along with the discharge of air flow from the gaps, the problems of difficult starting of a cooling fan, current increase and locked rotation are avoided, and the working efficiency of the whole air conditioning system is higher. As a preferable technical scheme of the utility model, the fan blades are provided with seven groups and are arranged around the annular array of the shaft disc, the fan blades adopt forward-bending blades, and the inclination angle of the blades ranges from 15 degrees to 42 degrees. As a preferable technical scheme of the utility model, the notch is in an inverted triangle shape, the short side of the notch forms an included angle of 90 degrees with the bottom of the shaft disc, and the long side of the notch forms an obtuse angle of 140 degrees with the bottom of the shaft disc. As a preferable technical scheme of the utility model, the junction of the two sides of the notch adopts arc transition with the radius of 5mm, and the arc area of the notch is lower than the bottom of the inner side of the shaft disc. As a preferable technical scheme of the utility model, the inner side of the shaft disc is also provided with the reinforcing ribs, the root of each group of fan blades is provided with three groups of reinforcing ribs, the height dimension of the three groups of reinforcing ribs gradually increases along the rotation direction of the impeller, the reinforcing ribs are arranged at the joint of the shaft disc and the fan, the structural strength of the impeller is improved, meanwhile, the reinforcing ribs with height difference are arranged, and impurities cannot continuously accumulate at the inner side of the impeller under the action of high-speed air flow. Compared with the prior art, the utility model has the beneficial effects that the notch is formed on the shaft disc of the impeller, so that impurities invaded into the inner side of the impeller of the fan can not be continuously accumulated on the inner side of the impeller along with the discharge of air flow from the notch under the action of centrifugal force, the problems of difficult starting of the cooling fan, current increase and locked rotation are avoided, and the working efficiency of the whole air conditioning system is higher. According to the utility model, th