Electronic water pump

Abstract

The utility model relates to an electronic water pump which comprises a pump shell, the pump shell is connected with a pump cover and a side cover, a motor assembly is arranged in the pump cover, an impeller assembly is arranged in the pump shell, and a controller assembly is arranged in the side cover. The motor assembly comprises a rotor assembly and a rotating shaft integrally formed with the rotor assembly. Sliding bearings are arranged at the two ends of the rotating shaft. The side, close to the side cover, of the pump shell is provided with a first cavity for introducing water flow to dissipate heat of the controller assembly, the first cavity is provided with an open end and a closed end which are opposite, the open end communicates with the impeller assembly to introduce water flow, and the closed end extends to the bottom of the pump shell along the outer circle of the pump shell. The first cavity is arranged and communicated with the impeller assembly to form a cold water channel, heat of the controller and the motor is taken away through cooling liquid circulation on the premise that the performance of the water pump is not affected so as to achieve the heat dissipation effect on the controller, and meanwhile the second cavity is arranged, so that direct contact between the controller assembly and the heating part of the motor is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the design development technical field of electronic water pump, specifically electronic water pump. BACKGROUND

[0002] The side controller electronic water pump axial size is short, and the overall structure is compact, gradually becomes the new choice of host factory arrangement. Since the controller is arranged on the side of the motor, cannot utilize the secondary flow of the water pump to heat dissipation, in addition, the motor and the controller in the working process own heat quantity is bigger, will appear because the controller component overheating and causes the water pump function failure problem, serious can cause the wiring harness short circuit and gradually causes the circuit system fire and other bad consequences. In order to solve the overheating problem of side controller, design and development a kind of electronic water pump. SUMMARY

[0003] In order to solve the above technical problems, the utility model provides an electronic water pump. The technical problem to be solved by the utility model is realized by adopting the following technical scheme:

[0004] An electronic water pump, comprising a pump shell, the pump shell is connected with a pump cover, a side cover and a rear cover, the pump cover is provided with a motor assembly, the pump shell is provided with an impeller assembly, the side cover is provided with a controller assembly;

[0005] The motor assembly comprises a rotor assembly and a rotating shaft integrally formed with the rotor assembly, both ends of the rotating shaft are provided with sliding bearings, one side sliding bearing cooperates with the top end of the rotating shaft and the pump shell, and the other side sliding bearing cooperates with the end of the rotating shaft and the rear cover;

[0006] The pump shell is provided with a first cavity for introducing water flow to heat dissipate the controller assembly on the side close to the side cover, the first cavity has opposite open ends and closed ends, the open end is communicated with the impeller assembly to introduce water flow, and the closed end extends to the bottom of the pump shell along the outer circle of the pump shell.

[0007] Further, as a further improvement of the utility model, the rotating shaft is provided with a water passing hole in the middle part.

[0008] Further, as a further improvement of the utility model, the rotating shaft is provided with a key groove distributed along the axis direction of the rotating shaft to integrally form the rotating shaft and the rotor assembly.

[0009] Further, as a further improvement of the utility model, the impeller assembly is provided with a cut-off hole communicated with the water passing hole.

[0010] Further, as a further improvement of the utility model, the pump shell is provided with a second cavity extending from the bottom of the pump shell to the top of the pump shell on the side close to the side cover.

[0011] The utility model has the advantages of:

[0012] The utility model discloses a set up one cavity and communicate with the impeller assembly, form cold water channel, under the premise of not influencing water pump performance through cooling liquid circulation and take away the controller and motor heat to reach the effect of the controller heat dissipation, set up cavity cavity no. BRIEF DESCRIPTION OF DRAWINGS

[0013] The utility model discloses further illustrate in combination with the drawings and embodiment.

[0014] Figure 1 It is cross section structure schematic diagram of the utility model;

[0015] Figure 2 It is three-dimensional structure schematic diagram of the utility model;

[0016] Figure 3 It is pump shell three-dimensional structure schematic diagram of the utility model;

[0017] Figure 4 It is water flow coverage area three-dimensional structure schematic of the utility model Figure 1 ;

[0018] Figure 5 It is water flow coverage area three-dimensional structure schematic of the utility model Figure 2 .

[0019] In the drawing:

[0020] 1, pump shell;2, pump cover;3, side cover;4, motor assembly;5, impeller assembly;6, controller assembly;7, one cavity;8, two cavities;9, back cover;41, rotor assembly;42, rotating shaft;43, sliding bearing;44, water passage;45, keyway;46, intercepting hole. DETAILED DESCRIPTION

[0021] In order to make the technical personnel of the prior art better understand the technical scheme of the utility model, the utility model will be described more clearly and more completely in combination with the drawings in the embodiment, and of course the described embodiment is only a part of the utility model but not all, based on this embodiment, the technical personnel in the art obtain other embodiments without paying the creative labor, and all are within the protection scope of the utility model.

[0022] As Figures 1 to 5 Shown, an electronic water pump, including pump shell 1, the pump shell 1 is connected with pump cover 2, side cover 3 and back cover 9, the pump cover 2 is equipped with motor assembly 4, the pump shell 1 is equipped with impeller assembly 5, the side cover 3 is equipped with controller assembly 6;

[0023] The motor assembly 4 comprises a rotor assembly 41 and a rotating shaft 42 integrally formed with the rotor assembly 41, and the rotating shaft 42 is provided with sliding bearings 43 at both ends, one side of the sliding bearings 43 is matched with the top end of the rotating shaft 42 and the pump shell 1, and the other side of the sliding bearings 43 is matched with the end of the rotating shaft 42 and the rear cover 9, and the impeller assembly 5 is matched with the top end of the rotating shaft 42;

[0024] The pump shell 1 is provided with a first cavity 7 near one side of the side cover 3 for introducing water flow to dissipate heat of the controller assembly 6, the first cavity 7 has opposite open ends and a closed end, the open end is communicated with the impeller assembly 5 to introduce water flow, and the closed end extends along the outer circle of the pump shell 1 to the bottom of the pump shell 1; after the water flow is accelerated by the impeller assembly 5, the water flow enters the first cavity 7 through the open end, the water flow exchanges heat with the controller assembly 6 through the pump shell 1, and the heat generated by the work of the controller assembly 6 is taken away to protect the controller assembly 6.

[0025] The rotating shaft 42 is provided with a water hole 44 in the middle; the water flow is circulated twice through the water hole 44 to dissipate heat of the rotor assembly 41 and the rotating shaft 42, and at the same time, the sand is cleaned, so that the residual sand on the rotating shaft 42 or the sliding bearings 43 is prevented, the wear is accelerated, and the service life is affected.

[0026] The rotating shaft 42 is provided with a key groove 45 in the middle, which is distributed along the axis direction of the rotating shaft 42 to integrally form the rotating shaft 42 and the rotor assembly 41; the rotating shaft 42 and the rotor assembly 41 are integrally injection molded through the key groove 45.

[0027] The impeller assembly 5 is provided with a cut-off hole 46 communicated with the water hole 44, the cut-off hole 46 is arranged to prevent excessive liquid force loss when the water flow is circulated twice through the water hole 44, and at the same time, the water flow can be completely circulated; if it is completely blocked, the internal circulation is not allowed, and the local boiling of the non-flowing water in the secondary circulation will cause the steam cavitation problem of the internal parts.

[0028] The pump shell 1 is provided with a second cavity 8 near one side of the side cover 3, which extends from the bottom of the pump shell 1 to the top of the pump shell 1; the second cavity 8 is the heating part of the motor of the rotor assembly 41, in order to prevent the heat from being directly transmitted to the controller assembly 6, the second cavity 8 is arranged to separate.

[0029] As shown in Figure 4 and Figure 5 , it is a schematic diagram of the area covered by the water flow pumped out after rotating through the impeller assembly 5.

[0030] The cross section of the first cavity 7 is semicircular, and the space shape of the first cavity 7 is shown in the protrusion extending downward in Figures 4 to 5 , wherein the outer circle of the first cavity 7 is arc-shaped to reduce the impact of the water flow, and the cross section is semicircular to increase the heat exchange area.

[0031] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. An electronic water pump characterized by: The utility model provides a pump, including pump shell (1), pump shell (1) is connected with pump cover (2), side cover (3) and rear cover (9), be equipped with motor assembly (4) in pump cover (2), be equipped with impeller assembly (5) in pump shell (1), be equipped with controller assembly (6) in side cover (3); The motor assembly (4) includes a rotor assembly (41) and a rotating shaft (42) integrally formed with the rotor assembly (41), both ends of the rotating shaft (42) are provided with sliding bearings (43), one side sliding bearing (43) is matched with the top end of the rotating shaft (42) and the pump shell (1), and the other side sliding bearing (43) is matched with the end of the rotating shaft (42) and the rear cover (9); The pump shell (1) is provided with a first cavity (7) near one side of the side cover (3) for introducing water flow to cool the controller assembly (6), the first cavity (7) has opposite open ends and a closed end, the open end is communicated with the impeller assembly (5) to introduce water flow, and the closed end extends along the outer circle of the pump shell (1) to the bottom of the pump shell (1).

2. An electronic water pump according to claim 1, characterized in that: The rotating shaft (42) is provided with a water passing hole (44) in the middle part.

3. An electronic water pump according to claim 1, characterized in that: The rotating shaft (42) is provided with a key groove (45) in the middle part and distributed along the axis direction of the rotating shaft (42) to make the rotating shaft (42) and the rotor assembly (41) integrally formed.

4. An electronic water pump according to claim 2, characterized in that: The impeller assembly (5) is provided with a cut-off hole (46) communicated with the water passing hole (44).

5. An electronic water pump according to claim 1, characterized in that: The pump shell (1) is provided with a second cavity (8) near one side of the side cover (3) and extending from the bottom of the pump shell (1) to the top of the pump shell (1).

6. An electronic water pump according to claim 1, characterized in that: The cross section of the first cavity (7) is semicircular.

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