Cold air hood

Abstract

The present invention provides a cold air deflection hood, wherein the hood body has an air inlet A, and a deflection branch is provided from the air inlet A to deflect the cold air to the air inlet provided on the motor end cover. The present invention constrains and guides the ambient cold air entering from the air inlet A, deflects the cold air to the part of the motor that needs cooling, and solves the problem of high heat collection and difficult heat dissipation in the lower area of ​​the motor stator.

Description

Technical Field

[0001] The present invention relates to a motor cooling technology, in particular to an outer cover for guiding the flow path of the cooling airflow of the motor. Background Art

[0002] Taking into account the heat dissipation problem during the operation of the motor, technicians have provided a variety of solutions. For example, the title "Fan cover and motor" (document number CN211481059U) not only takes into account the heat dissipation problem of the motor, but also improves the structure of the fan cover to eliminate the noise problem that may arise; another example is "A new type of special motor for pipeline pumps" (document number CN108075595 A), which takes into account the structural characteristics of special motors for pipeline pumps while also taking into account the improved design of the cooling circuit.

[0003] The problem with the above documents and the existing technologies generally known to the applicant is that the role of the phoenix cover is limited to ordinary protection and air intake. The simple air intake function cannot constrain and guide the path of the cold flow, thereby improving the heat dissipation efficiency. Summary of the Invention

[0004] The purpose of the present invention is to provide a cold air induction hood which not only has the safety protection function of a conventional hood, but also imposes constraints on the airflow and guides the cold flow to the heat exchange parts that need cooling.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical solution, a cold air deflection hood, characterized in that: there is an air inlet A on the upper part of the hood body, and a deflection branch is provided from the air inlet A to deflect the cold air to the air inlets arranged at the upper, side and lower positions of the motor end cover.

[0006] The above solution provides a method of constraining and guiding the ambient cold air entering from the air inlet A, directing the cold air to the part of the motor that needs cooling, especially guiding the cold air to the lower part of the motor stator, thereby improving the heat exchange environment at the lower part of the motor stator. It is equivalent to configuring an independent cold air flow channel for the lower part of the motor stator, solving the problem of high heat collection and difficult heat dissipation in the lower area of ​​the motor stator. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a schematic diagram of the three-dimensional structure of the front side of the present invention;

[0008] Figure 2 yes Figure 1 Schematic diagram of the three-dimensional structure after the filter is removed;

[0009] Figure 3 It is a three-dimensional structural diagram of the back side of the invention;

[0010] Figure 4 yes Figure 3 a front view of the back side shown;

[0011] Figure 5 yes Figure 4 AA cross-sectional structure diagram in. DETAILED DESCRIPTION

[0012] For ease of explanation, the orientations involved in this application are defined as follows: the motor is arranged horizontally and is installed on a mounting base at its bottom. When observing the motor end face axially, what is seen is the front side of the plate. The inner side or back side of the plate is not visible when in use.

[0013] The cold air deflector hood disclosed in the present invention has an air inlet A at the top of the hood body. Branches of diversion channels are provided from the air inlet A to direct the cold air to air inlets located at the top, sides, and bottom of the motor end cover. This solution confines the cold air to specific diversion channels, where it is directed to areas requiring cooling. Air inlets are provided at the top, sides, and bottom of the motor end cover, allowing the air to enter the motor interior through the inlets for heat exchange and cooling. This overcomes the problem of slow and difficult heat exchange and cooling, particularly at the bottom of the motor.

[0014] The cover body includes an outer wall plate 10 whose plate surface is perpendicular to the axial direction of the motor shaft. The outer wall plate 10 includes a circular lower part whose peripheral contour matches the peripheral contour of the motor end cover and an airspace 11 is opened in the middle of the lower plate surface area. Plate strips are respectively arranged on the outer edge 13 of the inner plate surface of the outer wall plate 10, the inner hole edge 14 of the airspace 11 and the plate surface therebetween, and the plate surface of the plate strip is arranged upright on the plate surface of the outer wall plate 10. The plate strip and the outer wall plate 10 are constructed into a groove-shaped area. The groove length direction of the groove-shaped area is up and down, and the upper end of the groove-shaped area is connected with the air inlet A, and the lower end is connected with the air inlets arranged at the upper, side and lower positions of the motor end cover.

[0015] The conventional shape of the motor end cover is circular. The lower part of the outer wall panel 10 in the present invention is selected to be a circular outline in order to match the conventional shape of the end cover. The function of the airspace 11 is to accommodate the motor shaft, while ensuring that the cold air can be delivered to the destination, reducing the path length of the drainage branch, reducing wind resistance to improve heat exchange efficiency. The present invention arranges the plate and strip components on the outer wall panel 10 to form a groove area, and the groove area is covered by the motor end cover, thereby forming each drainage branch. The drainage branches do not interfere with each other and independently achieve the air supply task.

[0016] Combine Figure 2The construction scheme of the drainage branch is specifically described, that is, the lower section 20a of the first plate strip 20 is arranged along the outer edge 13 of the lower part of the outer wall plate 10, and the second plate strip 30 is arranged at the inner hole edge 14 of the airspace 11 in the middle of the outer wall plate 10. A spacer plate strip 40 is arranged on the outer wall plate 10 between the first plate strip 20 and the second plate strip 30. The first plate strip 20, the spacer plate strip 40 and the outer wall plate 10 therebetween, as well as the spacer plate strip 40, the second plate strip 30 and the outer wall plate 10 therebetween are surrounded into a groove-shaped area. The groove length of the groove-shaped area at the circular area at the lower part of the outer wall plate 10 is in a corresponding arc shape. The cover surface of the motor end cover is attached to the notch of the groove-shaped area and thus encloses a drainage branch. Figure 2 As shown, the first plate strip 20, the second plate strip 30 and the spacer plate strip 40 on the left and right sides of the airspace 11 are arranged in an arc shape, and the groove cavity formed thereby is also in an arc shape, which can effectively reduce wind resistance and shorten the path.

[0017] like Figure 2 、 3 As shown in Figures 5 and 6, the upper portion of the outer wall panel 10 is a horizontal plate edge 12, which is extended together with the lower portion 20a to form the upper portion 20b of the first plate band 20, which is arranged at the straight edge 131 between the horizontal plate edge 12 and the outer edge 13. The upper portions 20b on both sides are extended upward to form the left and right side panels 51 and 52 of the air inlet, and the rear top panel 53 is placed on the upper and rear portions of the left and right side panels 51 and 52 of the air inlet. The horizontal plate edge 12 on the upper portion of the outer wall panel 10 and the front edges of the left and right side panels 51 and 52 of the air inlet and the rear top panel 53 are surrounded to form the air inlet A. The air inlet A of the above-mentioned solution has an opening area located within the plumb plane, i.e., the airflow direction at the air inlet A is parallel to the horizontal direction of the axial direction, which can prevent debris from falling into the air inlet A. The mesh surface of the filter 60 provided at the air inlet A is also located within the plumb plane, so that no debris will accumulate on the mesh surface and it is also easy to clean. The filter 60 can be provided as a left-right pull-out plug-in mesh structure. Figure 1 、 3 , 4, a handle is connected to the left end of the filter to facilitate cleaning and replacement.

[0018] like Figure 1 、 2 As shown in Figures 3 and 5, the outline of the left and right side panels 51 and 52 of the air inlet is a quarter-circle umbrella shape, and the arc edge is located at the upper rear part. The diverter plate 50 is placed horizontally at the air inlet A and its two ends are connected to the left and right side panels 51 and 52. The diverter plate 50 and the rear top plate 53 are arc-shaped plates with the same curvature core. The front upper plate edge 50a of the diverter plate 50 divides the air inlet A into two air inlets, the upper air inlet A1 and the lower air inlet A2. The rear lower plate edge 50b of the diverter plate 50 is located at the groove end of the groove area.

[0019] The function of the diverter plate 50 is to forcibly distribute the wind entering at the air inlet A into two parts, namely the upper air inlet A1 and the lower air inlet A2. The wind in the upper air inlet A1 is constrained by the passage formed by the diverter plate 50, the rear top plate 53 and the left and right side plates 51 and 52 to first reach the air inlet on the upper part of the motor end cover from front to back and downward, and then enter the upper area inside the motor for cooling; since the rear lower plate edge 50b of the diverter plate 50 is located at the notch of the groove end of the groove area, the cold air entering from the lower air inlet A2 directly reaches the upper groove end of the groove area from front to back and downward. Since the edge of the notch covers the motor end cover, it can only flow downward along the drainage branch formed by the first plate strip 20, the second plate strip 30 and the spacer plate strip 40, and the lower end of each drainage branch is connected to the air inlet set at the side and lower position of the motor end cover.

[0020] The above solution solves the cooling problem of the middle and lower parts of the motor. Specifically, for reliable cooling of the lower area of ​​the motor, it is necessary to provide cold air independently for the lower side parts and the lower area of ​​the motor. The present invention adopts the following solution, that is, the partition plate 40 includes a first partition plate 41 and a second partition plate 42 located on the inner side of the first partition plate 41. The lower end 411 of the first partition plate and the lower end 421 of the second partition plate extend to the first plate 20 and the lower end 411 of the first partition plate is higher than the lower end 421 of the second partition plate. The upper ends of the first partition plate 41 and the second partition plate 42 extend to the rear lower plate edge 50b of the diverter plate 50.

[0021] A strip-shaped partition 31 is provided on the top of the second plate strip 30 and is vertically placed on the surface of the outer wall panel 10 . The partition 31 extends upward, and the edge of the partition 31 is flush with the free edge of the second plate strip 30 .

[0022] like Figure 3 、 4As shown in Figure 5, since the lower end 411 of the first partition plate strip extends onto the first plate strip 20 and the connection position of the two corresponds to the upper and lower side position of the motor end cover, the first partition plate strip 41 and the first plate strip 20 surround the first drainage branch L1, and the first drainage branch L1 has one on each of the left and right sides and is symmetrically arranged; the lower ends of the first partition plate strip 41 and the second partition plate strip 42, that is, the lower end 411 of the first partition plate strip and the lower end 421 of the second partition plate strip, have a partial belt body of the first plate strip 20, thereby forming a second drainage branch L2, and the second drainage branch L2 has one on each of the left and right sides and is symmetrically arranged; the lower ends of the second partition plate strip 42 and the first plate strip 20 The lower section is partially surrounded by the second plate belt 30 to form a third drainage branch L3. The upper section of the third drainage branch L3 is separated into a separated shape by the partition 31 and the lower end is connected. The connection point of the lower end of the third drainage branch L3 is opposite to the air inlet at the lowest position of the motor end cover, thereby ensuring air supply and cooling for the lower area inside the motor. The third drainage branch L3 can actually be regarded as a U-shaped branch, which can ensure that the cold flow converges at the lowest position of the third drainage branch L3 and flows to the lowest air inlet of the motor end cover. If the partition 31 is not set, it is difficult to avoid the airflow forming a circular flow around the second plate belt 30, so that it is difficult to flow into the lowest air inlet of the motor end cover.

[0023] The free edge of the first plate strip 20, arranged along the outer edge 13 of the lower portion of the outer wall panel 10, has external flanges forming connecting lugs 70. Connecting lugs 70 are provided at four locations, thereby achieving a secure connection with the motor end cover. Furthermore, to ensure effective cooling and prevent air leakage, leaks, or crossflow from the junction between the motor end cover and the housing, a sealing strip can be provided at the junction of the motor end cover and the housing. This sealing strip also reduces vibration and noise.

Claims

1. A cold air deflector hood, characterized in that: There is an air inlet A on the upper part of the cover, and a drainage branch is provided from the air inlet A to guide the cold air to the air inlets arranged at the upper, side and lower positions of the motor end cover; The cover body includes an outer wall plate (10) whose plate surface is perpendicular to the axial direction of the motor shaft, the outer wall plate (10) includes a circular lower portion whose peripheral contour matches the peripheral contour of the motor end cover, and an airspace (11) is opened in the middle of the lower plate surface area, and plate strips are respectively provided at the outer edge (13) of the inner plate surface of the outer wall plate (10), the inner hole edge (14) of the airspace (11), and the plate surface therebetween, and the plate surface of the plate strip is arranged upright on the plate surface of the outer wall plate (10), and the plate strip and the outer wall plate (10) are constructed into a groove-shaped area, the groove length direction of the groove-shaped area is upward and downward, and the upper end of the groove-shaped area is connected to the air inlet A, and the lower end is connected to the air inlets provided at the upper, side, and lower positions of the motor end cover; The lower section (20a) of the first plate strip (20) is arranged along the outer edge (13) of the lower part of the outer wall plate (10), and the second plate strip (30) is arranged at the inner hole edge (14) of the airspace (11) in the middle of the outer wall plate (10). A spacer plate strip (40) is arranged on the outer wall plate (10) between the first plate strip (20) and the second plate strip (30). The first plate strip (20), the spacer plate strip (40) and the outer wall plate (10) therebetween, and the spacer plate strip (40), the second plate strip (30) and the outer wall plate (10) therebetween are arranged to form a groove-shaped area. The groove length of the groove-shaped area at the circular area at the lower part of the outer wall plate (10) is in a corresponding arc shape. The cover surface of the motor end cover is attached to the notch of the groove-shaped area and thereby forms a drainage branch.

2. The cold air deflector according to claim 1, characterized in that: The upper portion of the outer wall panel (10) is a horizontal plate edge (12), and the upper portion (20b) of the first plate strip (20) formed by extending with the lower portion (20a) is arranged at the straight edge (131) between the horizontal plate edge (12) and the outer edge (13). The upper portions (20b) on both sides extend upward to form the left and right side panels (51, 52) of the air inlet. The upper and rear portions of the left and right side panels (51, 52) of the air inlet are covered with a rear top panel (53). The horizontal plate edge (12) of the upper portion of the outer wall panel (10) and the front edges of the left and right side panels (51, 52) and the rear top panel (53) of the air inlet are surrounded to form an air inlet A.

3. The cold air deflector according to claim 2, characterized in that: The outline of the left and right side panels (51, 52) of the air inlet is a quarter-circle umbrella shape, and the arc edge is located at the upper rear part. The diverter plate (50) is placed horizontally at the air inlet A and its two ends are connected to the left and right side panels (51, 52). The diverter plate (50) and the rear top plate (53) are arc-shaped plates with the same curvature center. The front upper plate edge (50a) of the diverter plate (50) divides the air inlet A into two air inlets, the upper air inlet A1 and the lower air inlet A2. The rear lower plate edge (50b) of the diverter plate (50) is located at the groove end of the groove area.

4. The cold air deflector according to claim 1, characterized in that: The spacer strip (40) includes a first spacer strip (41) and a second spacer strip (42) located inside the first spacer strip (41). The lower end (411) of the first spacer strip and the lower end (421) of the second spacer strip extend onto the first strip (20), and the lower end (411) of the first spacer strip is higher than the lower end (421) of the second spacer strip.

5. The cold air deflector according to claim 3 or 4, characterized in that: The upper ends of the first spacer plate strip (41) and the second spacer plate strip (42) extend to the rear lower plate edge (50b) of the diverter plate (50).

6. The cold air deflector according to claim 1, characterized in that: The top of the second plate strip (30) is provided with a plate strip-shaped partition (31) standing on the plate surface of the outer wall plate (10), the partition (31) extends upward, and the plate edge of the partition (31) is flush with the free edge of the second plate strip (30).

7. The cold air deflector according to claim 1 or 2, characterized in that: A filter (60) is provided at the air inlet A.

8. The cold air deflector according to claim 1 or 2, characterized in that: The free edge of the first plate strip (20) arranged at the outer edge (13) of the lower part of the outer wall plate (10) has an external flange forming a connecting ear (70).

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