Water pump with one inlet and two outlets

Abstract

The water pump comprises a pump body, an impeller assembly and a motor assembly, the impeller assembly and the motor assembly are arranged in the pump body, and the motor assembly is connected with the impeller assembly; the impeller assembly comprises a first impeller and a second impeller which are connected with each other; a water inlet is formed in one end of the pump body and corresponds to the end, away from the second impeller, of the first impeller. A water inlet channel is formed between the second impeller and the water inlet; a first water outlet and a second water outlet are formed in the side wall of the pump body, the first water outlet and the second water outlet are staggered by a certain angle in the circumferential direction, the first water outlet is arranged close to the first impeller, and the second water outlet is arranged close to the second impeller; when the motor assembly is excited, the impeller assembly is driven to rotate, so that liquid enters the first impeller through the water inlet, enters the second impeller through the water inlet channel, and flows out of the first water outlet and the second water outlet after being pressurized by the first impeller and the second impeller. The assembly space and the preparation cost of the water pump can be saved.

Description

Technical Field

[0001] The present application relates to the technical field of water pumps, and in particular to a one-inlet and two-outlet water pump. Background Art

[0002] Compared with traditional water pumps, electronic water pumps have the advantages of precise control and higher efficiency, and are widely used in the automotive industry, industrial industry and new energy industry. Electronic water pumps are mainly used to provide power for the coolant of the unit or system to meet the needs of the unit or system to maintain constant temperature, increase temperature or reduce temperature.

[0003] The electronic water pump in the related art is usually a single pump (i.e., a one-inlet and one-outlet water pump, with one water inlet and one water outlet). When a unit or system requires two water pumps to work simultaneously and the efficiency is the same as or higher than that of a single pump, two water pumps are generally required.

[0004] However, installing two water pumps will not only take up more space, but also increase the preparation cost, and cannot meet the liquid supply demand when the assembly space is limited. Summary of the invention

[0005] The main technical problem solved by the present application is to provide a one-inlet and two-outlet water pump, which can solve the problem that the related technology cannot meet the liquid supply demand when the assembly space is limited.

[0006] In order to solve the above-mentioned technical problems, the technical solution adopted in the present application is to provide a one-inlet and two-outlet water pump, including a pump body and an impeller assembly and a motor assembly arranged in the pump body, the motor assembly is connected to the impeller assembly; the impeller assembly includes a first impeller and a second impeller connected to each other; a water inlet is arranged at one end of the pump body, and the water inlet corresponds to an end of the first impeller away from the second impeller; a water inlet channel is formed between the second impeller and the water inlet; a first water outlet and a second water outlet are arranged on the side wall of the pump body, the first water outlet and the second water outlet are staggered at a certain angle in the circumferential direction, and the first water outlet is arranged close to the first impeller, and the second water outlet is arranged close to the second impeller; wherein, when the motor assembly is excited, the impeller assembly is driven to rotate, so that the liquid enters the first impeller through the water inlet, and enters the second impeller through the water inlet channel, and flows out from the first water outlet and the second water outlet respectively after being pressurized by the first impeller and the second impeller.

[0007] Wherein, the first impeller includes a first impeller body and a first sleeve, a first axial hole is arranged at the center of the first impeller body, and the first sleeve is accommodated in the first axial hole; the second impeller includes a second impeller body and a second sleeve, a second axial hole is arranged at the center of the second impeller body, and the second sleeve is inserted in the second axial hole; wherein, the outer aperture of the second sleeve is smaller than the inner aperture of the first sleeve, and one end of the second sleeve extending out of the second axial hole is used to insert the first sleeve to connect the first impeller with the second impeller; wherein, at least one through hole is opened on the side wall of the second sleeve located in the second axial hole, and the second sleeve and the through hole are used to form a water inlet channel.

[0008] Among them, the second impeller body includes a plurality of second blades distributed along the circumferential direction; the second sleeve is located in the second shaft hole and has a plurality of through holes on its side wall, the plurality of through holes are distributed along the circumferential direction and correspond one-to-one to the plurality of second blades.

[0009] The first impeller body and the first shaft sleeve are integrally formed, and the second impeller body and the second shaft sleeve are integrally formed.

[0010] Among them, the motor assembly includes a rotor assembly, the rotor assembly includes a main shaft and a rotor assembly, and the rotor assembly is sleeved on the periphery of the main shaft; the outer aperture of the main shaft is smaller than the inner aperture of the second sleeve; wherein the main shaft is penetrated by the second sleeve and the first sleeve to connect the rotor assembly with the impeller assembly.

[0011] The main shaft is a hollow shaft so that liquid can flow into the main shaft.

[0012] Among them, the pump body includes a first pump shell, a second pump shell and a motor shell which are arranged in sequence, the first pump shell is sleeved on the periphery of the first impeller, the second pump shell is sleeved on the periphery of the second impeller, and the motor shell is sleeved on the periphery of the motor assembly; wherein, a water inlet shell is arranged at one end of the first pump shell away from the second pump shell, and the axis of the water inlet shell is located on the same straight line as the axis of the first axial hole; a first water outlet shell is arranged on the side wall of the first pump shell corresponding to the first water outlet; a second water outlet shell is arranged on the side wall of the second pump shell corresponding to the second water outlet; the first water outlet shell and the second water outlet shell are staggered at a certain angle in the circumferential direction.

[0013] A bracket is arranged in the water inlet shell, a positioning hole is arranged at the center of the bracket, and a first sleeve is passed through one end of the main shaft close to the impeller assembly and inserted into the positioning hole.

[0014] Wherein, a bearing is arranged at one end of the motor housing close to the second impeller, and the bearing sleeve is arranged on the periphery of the main shaft.

[0015] The outer wall of the motor housing is configured to be in a continuous concave-convex shape.

[0016] The beneficial effect of the present application is as follows: Different from the related art, the present application provides a one-inlet and two-outlet water pump, by arranging an impeller assembly including a first impeller and a second impeller connected to each other in the pump body, making the water inlet correspond to the first impeller, and forming a water inlet channel between the second impeller and the water inlet, and making the first water outlet on the pump body close to the first impeller and the second water outlet close to the second impeller, so that the liquid can enter the first impeller through the water inlet, and enter the second impeller through the water inlet channel, and then the liquid flows out from the first water outlet and the second water outlet respectively after flowing out of the first impeller and the second impeller, so as to supply liquid to two sets of units or systems at the same time, thereby meeting the liquid supply requirements of different units or systems at the same time. Furthermore, since the first impeller and the second impeller share a set of motor components, it can not only improve the working efficiency of the water pump, but also save assembly space and preparation costs, thereby meeting the liquid supply requirements when the assembly space is limited. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a schematic diagram of the assembly structure of an implementation method of a one-inlet and two-outlet water pump of the present application;

[0019] Figure 2 yes Figure 1 A top view of the one-inlet and two-outlet water pump;

[0020] Figure 3 yes Figure 1 Schematic diagram of the cross-sectional structure of a water pump with one inlet and two outlets along the axis;

[0021] Figure 4 yes Figure 1 A schematic diagram of the explosion structure of an embodiment of a water pump with one inlet and one outlet;

[0022] Figure 5 yes Figure 4 A schematic diagram of the specific structure of the second shaft sleeve;

[0023] Figure 6 yes Figure 2 A schematic diagram of the specific structure of the central spindle being positioned by the bracket;

[0024] Figure 7 yes Figure 1 Partial assembly diagram of the one-inlet and two-outlet water pump;

[0025] Figure 8 yes Figure 7Schematic diagram of the cross-sectional structure of a one-inlet and two-outlet water pump along the axis in each assembly link. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0027] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms of "a", "said", and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless otherwise clearly indicated above, and "multiple" generally includes at least two, but does not exclude the inclusion of at least one.

[0028] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0029] It should be understood that the terms "include", "comprises" or any other variations used herein are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, the elements defined by the sentence "includes..." do not exclude the presence of other identical elements in the process, method, article or device that includes the elements.

[0030] Electronic water pumps in related technologies are usually single pumps. When a unit or system requires two water pumps to work simultaneously and the efficiency is the same as or higher than that of a single pump, two water pumps are generally required. However, installing two water pumps will not only take up more space, but also increase the preparation cost, and cannot meet the liquid supply demand when the assembly space is limited.

[0031] Based on the above situation, the present application provides a one-inlet and two-outlet water pump, which can solve the problem that the related technology cannot meet the liquid supply demand when the assembly space is limited.

[0032] The one-inlet and two-outlet water pump disclosed in the present application can be used in the automotive industry, industrial industry, new energy industry and other fields.

[0033] To illustrate the specific structure of the one-inlet and two-outlet water pump in this application, please refer to Figure 1 , Figure 2 and Figure 3 , Figure 1 This is a schematic diagram of the assembly structure of an embodiment of a one-inlet and two-outlet water pump of the present application. Figure 2 yes Figure 1 A top view of a water pump with one inlet and two outlets. Figure 3 yes Figure 1 Schematic diagram of the cross-sectional structure of a one-inlet and two-outlet water pump along the axis.

[0034] In this embodiment, a one-inlet and two-outlet water pump 100 includes a pump body and an impeller assembly and a motor assembly disposed in the pump body, wherein the motor assembly is connected to the impeller assembly. The impeller assembly includes a first impeller 10 and a second impeller 20 that are connected to each other. A water inlet 101 is disposed at one end of the pump body, and the water inlet 101 corresponds to an end of the first impeller 10 away from the second impeller 20. A water inlet channel is formed between the second impeller 20 and the water inlet 101. A first water outlet 201 and a second water outlet 202 are disposed on the side wall of the pump body, and the first water outlet 201 and the second water outlet 202 are staggered at a certain angle in the circumferential direction, and the first water outlet 201 is disposed close to the first impeller 10, and the second water outlet 202 is disposed close to the second impeller 20. When the motor assembly is excited, it drives the impeller assembly to rotate, so that the liquid enters the first impeller 10 through the water inlet 101 and enters the second impeller 20 through the water inlet channel, and flows out from the first water outlet 201 and the second water outlet 202 respectively after being pressurized by the first impeller 10 and the second impeller 20.

[0035] The first impeller 10 and the second impeller 20 are arranged concentrically, and the axis of the water inlet 101 is located on the same straight line as the axis of the first impeller 10 and the second impeller 20 .

[0036] The liquid enters the water inlet channel of the second impeller 20 with reference to Figure 3 The solid arrow indicates the direction.

[0037] The liquid may be water, ethanol or other water-cooling liquids.

[0038] It can be understood that by arranging an impeller assembly including a first impeller 10 and a second impeller 20 connected to each other in the pump body, and making the water inlet 101 correspond to the first impeller 10, and forming a water inlet channel between the second impeller 20 and the water inlet 101, and making the first water outlet 201 on the pump body close to the first impeller 10, and the second water outlet 202 close to the second impeller 20, the liquid can enter the first impeller 10 through the water inlet 101, and enter the second impeller 20 through the water inlet channel, and then the liquid flows out of the first impeller 10 and the second impeller 20 and then flows out from the first water outlet 201 and the second water outlet 202 respectively, so as to supply liquid to two sets of units or systems at the same time, thereby meeting the liquid supply needs of different units or systems at the same time.

[0039] Furthermore, since the first impeller 10 and the second impeller 20 share a set of motor components, not only can the working efficiency of the one-inlet and two-outlet water pump 100 be improved, but also assembly space and preparation costs can be saved, thereby meeting the liquid supply demand when the assembly space is limited.

[0040] Please refer to Figure 4 and Figure 5 , Figure 4 yes Figure 1 Schematic diagram of the explosion structure of an embodiment of a one-inlet and one-outlet water pump, Figure 5 yes Figure 4 Schematic diagram of the specific structure of the second sleeve.

[0041] In this embodiment, the first impeller 10 includes a first impeller body 11 and a first sleeve 12. A first shaft hole (not shown) is provided at the center of the first impeller body 11, and the first sleeve 12 is accommodated in the first shaft hole. The second impeller 20 includes a second impeller body 21 and a second sleeve 22. A second shaft hole (not shown) is provided at the center of the second impeller body 21, and the second sleeve 22 is inserted in the second shaft hole.

[0042] In this embodiment, the outer aperture of the second sleeve 22 is smaller than the inner aperture of the first sleeve 12 , and one end of the second sleeve 22 extending out of the second axial hole is used to be inserted into the first sleeve 12 to connect the first impeller 10 with the second impeller 20 .

[0043] In some embodiments, the first impeller body 11 and the first sleeve 12 are integrally formed, and the second impeller body 21 and the second sleeve 22 are integrally formed.

[0044] In some specific implementations, the first impeller body 11 and the first sleeve 12 are formed by injection molding, and the second impeller body 21 and the second sleeve 22 are formed by injection molding.

[0045] It can be understood that by making the first impeller 10 and the second impeller 20 both integrally formed, the structural stability of the first impeller 10 and the second impeller 20 can be improved, which is beneficial to improving the concentricity.

[0046] In some embodiments, the second sleeve 22 is inserted into the first sleeve 12 to form an interference fit. Since the contact surfaces of the second sleeve 22 and the first sleeve 12 under the interference fit generate elastic pressure, the first impeller 10 and the second impeller 20 can be tightly connected in the assembled state.

[0047] In other embodiments, the second sleeve 22 is fixed to the first sleeve 12 by welding. In other embodiments, the second sleeve 22 is fixed to the first sleeve 12 by gluing. In other embodiments, the second sleeve 22 is fitted to the first sleeve 12 in a flat position.

[0048] In this embodiment, at least one through hole 221 is formed on the side wall of the second shaft sleeve 22 located in the second shaft hole. The second shaft sleeve 22 and the through hole 221 are used to form a water inlet channel.

[0049] Specifically, Figure 3 As shown, after the liquid enters the pump body from the water inlet 101, a part of it flows directly to the first impeller body 11, and the other part flows into the second sleeve 22, and flows to the second impeller body 21 through the side opening (through hole 221) of the second sleeve 22, and then flows out from the first water outlet 201 and the second water outlet 202 respectively after being pressurized by the first impeller 10 and the second impeller 20, thereby realizing the one-in-two-out function.

[0050] In some embodiments, the second impeller body 21 includes a plurality of second blades (not shown) distributed along the circumferential direction, and the second sleeve 22 is located in the second shaft hole and has a plurality of through holes 221 on its side wall, and the plurality of through holes 221 are distributed along the circumferential direction and correspond one-to-one to the plurality of second blades.

[0051] It can be understood that each through hole 221 corresponds to a second blade, which can better guide the second impeller body 21 to increase the flow rate of the second water outlet 202, thereby improving the water outlet efficiency of the second water outlet 202.

[0052] In this embodiment, the sizes of the first impeller 10 and the second impeller 20 may be the same or different. The number of blades included in the first impeller 10 and the number of blades included in the second impeller 20 may be the same or different. The rotation directions of the blades of the first impeller 10 and the second impeller 20 may be the same or different. The materials used to make the first impeller 10 and the second impeller 20 may be the same or different. The first impeller 10 and the second impeller 20 may be used to achieve the same water output requirements or different water output requirements.

[0053] It can be understood that when the first impeller 10 and the second impeller 20 are made of the same material, size, number of blades, and blade rotation direction, the first impeller 10 and the second impeller 20 are used to achieve the same water output requirement. Otherwise, the first impeller 10 and the second impeller 20 are used to achieve different water output requirements to meet different application scenarios.

[0054] Continue reading Figure 3 and Figure 4 In this embodiment, the motor assembly includes a rotor assembly and a motor (not shown), and the rotor assembly includes a main shaft 31 and a rotor assembly 32, and the rotor assembly 32 is sleeved on the periphery of the main shaft 31. The outer aperture of the main shaft 31 is smaller than the inner aperture of the second sleeve 22. The main shaft 31 is penetrated by the second sleeve 22 and the first sleeve 12, so that the rotor assembly is connected to the impeller assembly.

[0055] In this embodiment, the main shaft 31 is inserted into the second sleeve 22 to form an interference fit. Since the contact surface of the main shaft 31 and the second sleeve 22 under the interference fit generates elastic pressure, the main shaft 31 and the second impeller 20 can be tightly connected in the assembled state.

[0056] Specifically, when the motor assembly is excited, the rotor assembly 32 drives the main shaft 31 to rotate, and the motor torque is directly transmitted to the second sleeve 22 of the second impeller 20 through the main shaft 31, and then transmitted to the first sleeve 12 of the first impeller 10 through the second sleeve 22 to achieve torque transmission.

[0057] It can be understood that by making the main shaft 31 pass through the second sleeve 22 and the first sleeve 12, and making the main shaft 31 and the second sleeve 22 have an interference fit, and the second sleeve 22 and the first sleeve 12 have an interference fit, and driving the second impeller 20 and the first impeller 10 to rotate synchronously through one main shaft 31, the first impeller 10 and the second impeller 20 can have the same speed as the motor assembly, so that one motor drives two impellers. Further, by making the first water outlet 201 and the second water outlet 202 have the same water outlet efficiency as the outlet of the single pump, the working efficiency of the one-inlet and two-outlet water pump 100 can be effectively improved.

[0058] In some embodiments, the rotor assembly 32 includes silicon steel sheets, magnetic steel, a rotor sleeve and a sleeve cover, and the main shaft 31 is press-fitted into a through hole formed in the silicon steel sheets so that the rotor assembly 32 is sleeved on the periphery of the main shaft 31 .

[0059] In some implementations, the main shaft 31 is a hollow shaft so that liquid can flow into the main shaft 31 .

[0060] It can be understood that by allowing the liquid to flow into the hollow shaft, the heat of the motor component can be better dissipated, thereby reducing the risk of damage to the motor component, and further improving the safety performance of the one-inlet and two-outlet water pump 100.

[0061] In other embodiments, the main shaft 31 may be a solid shaft.

[0062] In some implementations, in order to improve the waterproof performance of the motor assembly, a waterproof cover 33 and a waterproof cover sealing ring 34 are provided on the outer side of the rotor assembly 32 .

[0063] In this embodiment, the one-inlet and two-outlet water pump 100 further includes a printed circuit board (PCB) 70 and a connector assembly 71. The connector assembly 71 is used for power supply and control and is connected to the circuit board 70. The circuit board 70 is connected to a motor that controls the rotation of the rotor assembly 32, so that the rotation of the rotor assembly 32 and the main shaft 31 is controlled by a signal input from the connector assembly 71.

[0064] In some embodiments, an end cover 72 is disposed between the rotor assembly 32 and the circuit board 70 . The end cover 72 is fixed by an end cover screw 73 and sealed by an end cover sealing ring 74 .

[0065] In some embodiments, a rear cover 75 is disposed between the circuit board 70 and the connector assembly 71 . The rear cover 75 is fixed by rear cover screws 76 and sealed by a rear cover sealing ring 77 .

[0066] Please refer to Figure 1 , Figure 3 and Figure 4 In this embodiment, the pump body includes a first pump shell 40, a second pump shell 50 and a motor shell 60 which are arranged in sequence. The first pump shell 40 is sleeved on the periphery of the first impeller 10, the second pump shell 50 is sleeved on the periphery of the second impeller 20, and the motor shell 60 is sleeved on the periphery of the motor assembly.

[0067] Among them, a water inlet housing 42 is provided at one end of the first pump housing 40 away from the second pump housing 50, and the axis of the water inlet housing 42 is located on the same straight line as the axis of the first axial hole. A first water outlet housing 41 is provided at the side wall of the first pump housing 40 corresponding to the first water outlet 201. A second water outlet housing 51 is provided at the side wall of the second pump housing 50 corresponding to the second water outlet 202. The first water outlet housing 41 and the second water outlet housing 51 are staggered at a certain angle along the circumferential direction.

[0068] In some embodiments, the staggered angle between the first water outlet shell 41 and the second water outlet shell 51 is in the range of 30° to 330°. In some specific embodiments, the staggered angle between the first water outlet shell 41 and the second water outlet shell 51 can be 45°, 90°, 135°, 180°, or 270°.

[0069] It can be understood that the first water outlet housing 41 and the second water outlet housing 51 can be arranged on opposite sides of the pump body, or on the same side of the pump body, and it is only necessary to ensure that the two are staggered at a certain angle to form a staggered arrangement.

[0070] In some implementations, the first pump housing 40 and the second pump housing 50 are sealed and fixed by a pump head sealing ring 43 and a plurality of pump head screws 44 .

[0071] In this embodiment, a pump cavity (not shown) is formed between the first pump housing 40 and the second pump housing 50. The pump cavity is formed around the impeller assembly.

[0072] Specifically, the first sleeve 12 and the second sleeve 22 form an isolation member, which is used to isolate the pump chamber into a first pump chamber and a second pump chamber to prevent liquid overflowing from the first water outlet 201 from entering the second pump chamber from the first pump chamber, thereby making the first impeller body 11 and the second impeller body 21 respectively located in the two fluid chambers.

[0073] In some implementations, the second pump housing 50 and the motor housing 60 are sealed via a pump body sealing ring 65 .

[0074] In this embodiment, along the axial direction, the height position of the second sleeve 22 close to one end of the first sleeve 12 does not exceed the height position of the water inlet 101.

[0075] In some embodiments, one end of the second sleeve 22 close to the first sleeve 12 is accommodated in the first sleeve 12. In other embodiments, one end of the second sleeve 22 close to the first sleeve 12 passes through the first sleeve 12 but is accommodated in the first shaft hole of the first impeller body 11. In still other embodiments, one end of the second sleeve 22 close to the first sleeve 12 passes through the first impeller body 11.

[0076] It can be understood that the second sleeve 22 is not affected by the height and can be located at any height position of the first pump casing 40 to achieve the purpose of connecting the first impeller 10 and draining the water to the second impeller 20 .

[0077] Please refer to Figure 2 and Figure 6 , Figure 6 yes Figure 2 Schematic diagram of the specific structure of the central spindle being positioned by the bracket.

[0078] In this embodiment, a bracket 45 is provided in the water inlet housing 42 , a positioning hole 46 is provided at the center of the bracket 45 , and a first sleeve 12 is passed through one end of the main shaft 31 close to the impeller assembly and inserted into the positioning hole 46 .

[0079] In some embodiments, the bracket 45 is a triangular bracket.

[0080] It can be understood that fixing the main shaft 31 by the bracket 45 can improve the rotation stability of the main shaft 31, thereby effectively reducing the probability of the main shaft 31 deviating or swinging when running at high speed, thereby improving the stability of the one-inlet and two-outlet water pump 100.

[0081] continue Figure 3 and Figure 4 In this embodiment, a bearing 61 is provided at one end of the motor housing 60 close to the second impeller 20 , and the bearing 61 is sleeved on the periphery of the main shaft 31 .

[0082] It can be understood that the end of the main shaft 31 away from the impeller assembly is connected to the rotor assembly 32 by an interference fit, the end of the main shaft 31 close to the impeller assembly is fixed by a bracket 45, and the middle section of the main shaft 31 is supported by a bearing 61. The main shaft 31 can be positioned at three points, thereby further improving the rotational stability of the main shaft 31.

[0083] In some embodiments, a ceramic sheet 63 and a shock-absorbing pad 64 are further disposed between the bearing 61 and the rotor assembly 32 . The ceramic sheet 63 is disposed close to the bearing 61 , and the shock-absorbing pad 64 is disposed close to the rotor assembly 32 , so as to further reduce the swing and vibration of the main shaft 31 .

[0084] In this embodiment, the outer wall of the motor housing 60 is configured to have a continuous concave-convex shape.

[0085] It can be understood that the outer wall of the motor housing 60 is set to a continuous concave-convex shape, which can increase the heat dissipation area (the heat dissipation area is increased by 1 times compared to the smooth arc shape), thereby greatly increasing the heat dissipation of the motor assembly, thereby improving the heat dissipation performance of the one-inlet and two-outlet water pump 100.

[0086] In addition, the motor housing 60 is fixed and supported by the mounting bracket 62. The outer wall of the motor housing 60 is set to a continuous concave-convex shape, which can facilitate the assembly of the mounting bracket 62, making the connection between the motor housing 60 and the mounting bracket 62 more secure, thereby reducing the possibility of rotation of the motor housing 60, so that the one-inlet and two-outlet water pump 100 will not shift or tilt when subjected to 20G vibration, thereby further improving the stability of the one-inlet and two-outlet water pump 100.

[0087] To further explain the assembly process of the one-inlet and two-outlet water pump in this application, please refer to Figure 3 , Figure 7 and Figure 8 , Figure 7 yes Figure 1 Partial assembly diagram of a one-inlet and two-outlet water pump. Figure 8 yes Figure 7 Schematic diagram of the cross-sectional structure of a one-inlet and two-outlet water pump along the axis in each assembly link.

[0088] In this embodiment, the rotor assembly 32 is first assembled, and then the main shaft 31 is press-fitted into the through hole formed by the silicon steel sheet of the rotor assembly 32 to form a rotor sub-assembly. Secondly, the rotor sub-assembly is placed in the motor housing 60, and the main shaft 31 is inserted into the second sleeve 22 of the second impeller 20 to form an interference fit to connect the rotor sub-assembly and the second impeller 20. Then, the second pump housing 50 is sleeved on the periphery of the second impeller 20 to realize the assembly of the second pump housing 50 and the motor housing 60. Then, the second sleeve 22 is inserted into the first sleeve 12 of the first impeller 10 to form an interference fit to connect the second impeller 20 and the first impeller 10. Finally, the first pump housing 40 is sleeved on the periphery of the first impeller 10 to realize the assembly of the first pump housing 40 and the second pump housing 50.

[0089] It can be understood that the above-mentioned parts are simple in design and sophisticated in coordination, the manufacturing and assembly processes are simple, and they are capable of mass production.

[0090] Different from the related art, the present application provides an impeller assembly including a first impeller and a second impeller connected to each other in the pump body, and makes the water inlet correspond to the first impeller, and forms a water inlet channel between the second impeller and the water inlet, and makes the first water outlet on the pump body close to the first impeller, and the second water outlet close to the second impeller, so that the liquid can enter the first impeller through the water inlet, and enter the second impeller through the water inlet channel, and then the liquid flows out from the first water outlet and the second water outlet respectively after flowing out of the first impeller and the second impeller, so as to supply liquid to two sets of units or systems at the same time, thereby meeting the liquid supply needs of different units or systems at the same time. Furthermore, since the first impeller and the second impeller share a set of motor components, it can not only improve the working efficiency of the water pump, but also save assembly space and preparation costs, thereby meeting the liquid supply needs when the assembly space is limited.

[0091] The above description is only an implementation method of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A one-inlet and two-outlet water pump, characterized in that: It comprises a pump body, an impeller assembly and a motor assembly arranged in the pump body, wherein the motor assembly is connected to the impeller assembly; The impeller assembly comprises a first impeller and a second impeller connected to each other; A water inlet is provided at one end of the pump body, and the water inlet corresponds to an end of the first impeller away from the second impeller; a water inlet channel is formed between the second impeller and the water inlet; A first water outlet and a second water outlet are arranged on the side wall of the pump body, the first water outlet and the second water outlet are staggered at a certain angle along the circumferential direction, and the first water outlet is arranged close to the first impeller, and the second water outlet is arranged close to the second impeller; When the motor assembly is excited, it drives the impeller assembly to rotate, so that the liquid enters the first impeller through the water inlet and enters the second impeller through the water inlet channel, and flows out from the first water outlet and the second water outlet respectively after being pressurized by the first impeller and the second impeller.

2. The one-inlet and two-outlet water pump according to claim 1, characterized in that: The first impeller comprises a first impeller body and a first shaft sleeve, a first shaft hole is arranged at the center of the first impeller body, and the first shaft sleeve is accommodated in the first shaft hole; The second impeller comprises a second impeller body and a second shaft sleeve, a second shaft hole is arranged at the center of the second impeller body, and the second shaft sleeve is inserted into the second shaft hole; The outer hole diameter of the second sleeve is smaller than the inner hole diameter of the first sleeve, and one end of the second sleeve extending out of the second shaft hole is used to be inserted into the first sleeve, so that the first impeller is connected to the second impeller; Wherein, at least one through hole is formed on the side wall of the second sleeve located in the second shaft hole, and the second sleeve and the through hole are used to form the water inlet channel.

3. The one-inlet and two-outlet water pump according to claim 2, characterized in that: The second impeller body includes a plurality of second blades distributed along the circumferential direction; A plurality of through holes are formed on a side wall of the second shaft sleeve located in the second shaft hole. The plurality of through holes are distributed along a circumferential direction and correspond one-to-one to the plurality of second blades.

4. The one-inlet and two-outlet water pump according to claim 2, characterized in that: The first impeller body and the first shaft sleeve are an integrally formed part, and the second impeller body and the second shaft sleeve are the integrally formed part.

5. The one-inlet and two-outlet water pump according to claim 2, characterized in that: The motor assembly includes a rotor assembly, and the rotor assembly includes a main shaft and a rotor assembly, and the rotor assembly is sleeved on the periphery of the main shaft; the outer hole diameter of the main shaft is smaller than the inner hole diameter of the second sleeve; Wherein, the main shaft is penetrated by the second shaft sleeve and the first shaft sleeve so that the rotor assembly is connected to the impeller assembly.

6. The one-inlet and two-outlet water pump according to claim 5, characterized in that: The main shaft is a hollow shaft so that the liquid can flow into the main shaft.

7. The one-inlet and two-outlet water pump according to claim 5, characterized in that: The pump body comprises a first pump shell, a second pump shell and a motor shell which are sequentially arranged, the first pump shell is sleeved on the periphery of the first impeller, the second pump shell is sleeved on the periphery of the second impeller, and the motor shell is sleeved on the periphery of the motor assembly; Wherein, a water inlet shell is arranged at one end of the first pump shell away from the second pump shell, and the axis of the water inlet shell and the axis of the first shaft hole are located on the same straight line; A first water outlet shell is provided on the side wall of the first pump housing corresponding to the first water outlet; a second water outlet shell is provided on the side wall of the second pump housing corresponding to the second water outlet; the first water outlet shell and the second water outlet shell are staggered at a certain angle along the circumferential direction.

8. The one-inlet and two-outlet water pump according to claim 7, characterized in that: A bracket is arranged in the water inlet shell, a positioning hole is arranged at the center of the bracket, and the first sleeve is passed through one end of the main shaft close to the impeller assembly and inserted into the positioning hole.

9. The one-inlet and two-outlet water pump according to claim 8, characterized in that: A bearing is disposed at one end of the motor housing close to the second impeller, and the bearing is sleeved on the periphery of the main shaft.

10. The one-inlet and two-outlet water pump according to claim 7, characterized in that: The outer wall of the motor housing is configured to be in a continuous concave-convex shape.

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