Impeller assembly and electronic water pump using same

Abstract

The utility model relates to an impeller assembly and an electronic water pump using the same, the impeller assembly comprises an impeller base, the impeller base is provided with a plurality of blades circumferentially distributed around the circle center of the impeller base, the blades are distributed in an arc shape, the blades are matched with an impeller cover, and the impeller cover is provided with clamping grooves clamped with the blades; bosses extending along the blade contours are arranged on the blades, and welding ribs are arranged on the bosses; the clamping grooves are in one-to-one correspondence with the blade tracks, the tail ends of the clamping grooves extend out of the outer circle of the impeller cover, limiting grooves matched with the bosses are formed in the clamping grooves, the width of the limiting grooves is larger than that of the bosses, and the limiting grooves and the outer walls of the bosses are matched to form flash grooves for storing welding rib melt. According to the utility model, the limiting groove and the boss are matched to form the flash groove, so that welding slag is remained in the flash groove, and the cleanliness of a welded product is ensured; the tangential direction of the intersection of the starting end plane of the boss and the outer circle of the blade is vertically distributed, so that welding slag can be prevented from falling into the surface of the blade.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic water pumps, in particular to an impeller component and an electronic water pump using the component. Background Art

[0002] The impeller and impeller cover of the electronic water pump are connected by ultrasonic welding. As a result, welding slag will overflow from the joint of the impeller and the impeller cover during the welding process of the traditional impeller and impeller cover, affecting the appearance of the product. At the same time, the welding overflow is easy to fall off and enter the medium cavity of the water pump when the water pump runs at a high speed. The bearing clearance is small, and the cooling water circulation is easily blocked.

[0003] Therefore, the utility model designs and develops an impeller assembly and an electronic water pump using the assembly to solve the above problems. Summary of the invention

[0004] In order to solve the above technical problems, the utility model proposes an impeller assembly and an electronic water pump using the assembly. The technical problem to be solved by the utility model is achieved by the following technical solutions:

[0005] An impeller assembly comprises an impeller base, the impeller base is provided with a plurality of blades distributed in a circle around the center of the impeller base, the blades are distributed in an arc shape, the blades are matched with an impeller cover, and the impeller cover is provided with a slot engaged with the blades;

[0006] The blade is provided with a boss extending along the blade profile, and the boss is provided with a welding rib;

[0007] The card slot corresponds to the blade trajectory one by one and the end of the card slot extends out of the outer circle of the impeller cover. The card slot is provided with a limiting groove that cooperates with the boss. The width of the limiting groove is greater than the width of the boss. The limiting groove and the outer wall of the boss cooperate to form an overflow groove for storing the weld molten material.

[0008] An electronic water pump for achieving the above object includes the impeller assembly as described above.

[0009] The beneficial effects of the utility model are:

[0010] The utility model forms an overflow groove by cooperating the limiting groove and the boss, so that the welding slag is retained in the overflow groove, so that the cleanliness of the product after welding is guaranteed; the tangent direction of the intersection point of the boss starting end plane and the blade outer circle of the utility model is vertically distributed, which can prevent the welding slag from falling into the blade surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0012] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0013] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0014] Figure 3 This is a schematic diagram of the three-dimensional structure of the blade of the utility model;

[0015] Figure 4 This is a bottom view of the impeller cover of the utility model;

[0016] Figure 5 This is a schematic diagram of the card slot structure of the utility model;

[0017] Figure 6 It is a schematic diagram of the three-dimensional structure of the boss of the utility model;

[0018] Figure 7 For this utility model Figure 2 Magnified view of center I.

[0019] As shown in the figure:

[0020] 1. Impeller base; 2. Blades; 3. Impeller cover; 4. Welding ribs; 5. Slots; 6. Positioning columns; 7. Bosses; 8. Limiting grooves; 9. Overflow grooves; 10. Positioning holes; 11. Rotor assembly; 12. Upper positioning tooling; 13. Lower positioning tooling. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described more clearly and completely below in conjunction with the drawings in the embodiments. Of course, the described embodiments are only a part of the present invention but not all of it. Based on this embodiment, other embodiments obtained by those skilled in the art without creative labor are all within the protection scope of the present invention.

[0022] like Figures 1 to 7 As shown, an impeller assembly includes an impeller base 1, on which a plurality of blades 2 are distributed in a circle around the center of the impeller base 1, the blades 2 are distributed in an arc shape, and the blades 2 are matched with an impeller cover 3, on which a slot 5 for engaging with the blades 2 is provided; the impeller base 1 is connected to a rotor assembly 11, the impeller cover 3 is matched with an upper positioning tool 12, and the rotor assembly 11 is matched with a lower positioning tool 13.

[0023] In the utility model, the impeller cover 3 and the blades 2 are pressed tightly by the upper positioning tool 12 and the lower positioning tool 13 before ultrasonic welding.

[0024] like Figure 3 As shown, the blade 2 is provided with a boss 7 extending along the outline of the blade 2 , and the boss 7 is provided with a welding rib 4 .

[0025] like Figure 4 As shown, the slots 5 correspond to the blade 2 trajectory one by one and the end of the slots 5 extends out of the outer circle of the impeller cover 3. The slots 5 are each provided with a limiting slot 8 that cooperates with the boss 7. The width of the limiting slot 8 is greater than the width of the boss 7. The limiting slots 8 and the outer wall of the boss 7 cooperate to form an overflow groove 9 for storing the molten material of the welding rib 4; Figure 2 and Figure 7 As shown, the welding slag formed by the melting of the welding rib 4 during welding flows into the overflow groove 9 for storage, and is squeezed and pressed between the step surfaces between the limit groove 8 and the card groove 5 to prevent the existence of a gap, so that the welding slag is stored in the overflow groove 9. After the welding slag is cooled, it can be sealed in the overflow groove 9 to ensure the cleanliness of the blade 2 and the impeller cover 3 during welding and prevent the blade 2 and the impeller cover 3 from being affected.

[0026] The width of the boss 7 is smaller than that of the blade 2 and the front and rear ends of the boss 7 do not overlap with the front and rear ends of the blade 2; the boss 7 is completely engaged in the limiting groove 8 to prevent welding slag from flowing into the surface of the blade 2 and affecting the assembly of the blade 2 and the impeller cover 3.

[0027] A positioning column 6 is provided in the middle of any two blades 2 that are relatively distributed. A positioning hole 10 that cooperates with the positioning column 6 is provided in the slot 5 corresponding to the blade 2 .

[0028] like Figure 3 As shown, a positioning column 6 is provided on the blade 2, and the positioning column 6 divides the boss 7 and the welding rib 4 into two sections to prevent interference during welding caused by the positioning column 6; the positioning of the blade 2 and the impeller cover 3 is effectively achieved through two relatively distributed positioning columns 6, ensuring the accurate welding position of the blade 2 and the impeller cover 3.

[0029] The starting end plane of the boss 7 and the tangent direction of the intersection of the outer circle of the blade 2 are vertically distributed. Figure 3 As shown, the starting end of the boss 7 is horizontal and is vertically distributed with the tangent direction of the intersection of the outer circle of the blade 2. This design is different from the traditional inclined surface distribution and can effectively prevent welding slag from flowing into the blade 2 through the starting end of the boss 7.

[0030] The width of the welding rib 4 is smaller than the width of the boss 7 and the front and rear ends of the welding rib 4 do not overlap with the front and rear ends of the boss 7. The limiting groove 8 can cover the welding rib 4. The advantage of this design is to prevent the welding slag formed by the welding rib 4 from flowing out from the front and rear ends of the limiting groove 8.

[0031] The volume of the overflow groove 9 is at least 20% greater than the volume of the welding rib 4; to ensure that the overflow groove 9 has enough space to accommodate welding slag, in order to ensure the volume of the overflow groove 9, the height, width and other parameters of the boss 7 and the limiting groove 8 can be adjusted to suit.

[0032] The utility model also provides an electronic water pump, comprising the impeller assembly as mentioned above.

[0033] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An impeller assembly, characterized in that: The invention comprises an impeller base (1), wherein the impeller base (1) is provided with a plurality of blades (2) distributed in a circle around the center of the impeller base (1), wherein the blades (2) are distributed in an arc shape, and the blades (2) are matched with an impeller cover (3), wherein the impeller cover (3) is provided with a slot (5) engaged with the blades (2); The blade (2) is provided with a boss (7) extending along the outline of the blade (2), and the boss (7) is provided with a welding rib (4); The clamping groove (5) corresponds to the trajectory of the blade (2) one by one, and the end of the clamping groove (5) extends out of the outer circle of the impeller cover (3). The clamping groove (5) is provided with a limiting groove (8) that cooperates with the boss (7). The width of the limiting groove (8) is greater than the width of the boss (7). The limiting groove (8) and the outer wall of the boss (7) cooperate to form an overflow groove (9) for storing the molten material of the welding rib (4).

2. An impeller assembly according to claim 1, characterized in that: The width of the boss (7) is smaller than the width of the blade (2), and the beginning and end of the boss (7) do not overlap with the beginning and end of the blade (2).

3. An impeller assembly according to claim 1, characterized in that: A positioning column (6) is provided in the middle of any two blades (2) that are relatively distributed, and a positioning hole (10) that matches the positioning column (6) is provided in the clamping groove (5) corresponding to the blade (2).

4. An impeller assembly according to claim 1, characterized in that: The tangent direction of the intersection point between the starting end plane of the boss (7) and the outer circle of the blade (2) is vertically distributed.

5. An impeller assembly according to claim 1, characterized in that: The width of the welding rib (4) is smaller than the width of the boss (7), and the beginning and end of the welding rib (4) do not overlap with the beginning and end of the boss (7).

6. An impeller assembly according to claim 1, characterized in that: The volume of the overflow groove (9) is at least greater than 20% of the volume of the welding rib (4).

7. An electronic water pump, characterized in that: The electronic water pump comprises an impeller assembly as claimed in any one of claims 1 to 6.

Images