CN220915006U

CN220915006U - Thin liquid pump

Info

Publication number: CN220915006U
Application number: CN202322413712.3U
Authority: CN
Inventors: 洪庆昇
Original assignee: Sunonwealth Electric Machine Industry Co Ltd
Current assignee: Sunonwealth Electric Machine Industry Co Ltd
Priority date: 2023-08-30
Filing date: 2023-09-06
Publication date: 2024-05-07
Anticipated expiration: 2033-09-06
Also published as: TWM648722U

Abstract

A thin liquid pump is used for solving the problem that the thickness of the existing water pump is difficult to thin. Comprising the following steps: a housing having an inflow portion communicating with a chamber; a motor housing having a first fluid chamber and a second fluid chamber in communication, the first fluid chamber being located in the chamber, the motor housing having at least one fluid inlet channel in communication with the first fluid chamber and the chamber, the motor housing having an outflow in communication with the second fluid chamber, the motor housing having an outer vessel; the stator group is provided with at least one notch part, the stator group is positioned in the outer accommodating groove, and the notch part corresponds to the liquid inlet flow channel; and a rotor set having an impeller rotatably disposed on the motor housing.

Description

Thin liquid pump

Technical Field

The present utility model relates to a liquid driving assembly, and more particularly, to a thin liquid pump capable of driving liquid to flow.

Background

At present, water inlets of common water pumps in the market are all arranged above a rotor impeller, and when the conventional water pumps operate, water flows do not pass through stators (coils, silicon steel sheets and insulating sleeves) and PCBA (Printed Circuit Board Assembly), so that the thickness required by a water flow channel is required to be set in a structure in consideration, and the thinning is difficult to realize.

In view of this, there is a need for improvement in existing water pumps.

Disclosure of utility model

In order to solve the above-mentioned problems, an object of the present utility model is to provide a slim type liquid pump, in which a liquid inlet channel is capable of being filled into a notch of a stator assembly, so as to slim the whole liquid pump.

It is a further object of the present utility model to provide a slim liquid pump which allows easy installation of the stator assembly and prevents the coils from being worn.

It is yet another object of the present utility model to provide a low profile liquid pump that can increase the amount of water that is fed.

Throughout this disclosure, directional or approximate terms, such as "front", "back", "left", "right", "upper (top)", "lower (bottom)", "inner", "outer", "side", etc., refer primarily to the direction of the drawings and are used merely to aid in the description and understanding of various embodiments of the present utility model and are not intended to be limiting.

The use of the terms "a" or "an" for the elements and components described throughout this disclosure is for convenience only and provides a general sense of the scope of the utility model; it should be understood that the present utility model includes one or at least one, and that the singular concept also includes the plural unless it is obvious that it is meant otherwise.

The terms "coupled," "assembled," or "assembled" as used throughout this disclosure, generally include those that are separated without damaging the components after connection, or that are not separated after connection, and may be selected by one skilled in the art based on the materials or assembly requirements of the components to be connected.

The thin liquid pump of the present utility model comprises: a housing having an inflow portion communicating with a chamber; a motor housing having a first fluid chamber and a second fluid chamber in communication, the first fluid chamber being located in the chamber, the motor housing having at least one fluid inlet channel in communication with the first fluid chamber and the chamber, the motor housing having an outflow in communication with the second fluid chamber, the motor housing having an outer vessel; the stator group is provided with at least one notch part, the stator group is positioned in the outer accommodating groove, and the notch part corresponds to the liquid inlet flow channel; and a rotor set having an impeller rotatably disposed on the motor housing for drawing liquid from the inlet into the chamber, flowing into the first chamber through the inlet flow passage, and then flowing into the second chamber and being pumped out through the outlet.

Therefore, the thin liquid pump of the utility model can ensure that the stator group can make partial setting space for liquid to flow through by arranging the liquid inlet flow channel and the notch part on the motor shell and the stator group respectively, so as to save the liquid inlet space which is originally arranged above the impeller, and realize the thinning of the whole liquid pump.

The stator set may have one silicon steel sheet set with notch to penetrate from outside to inside, and one coil set with notch to reduce winding number or avoid winding. Therefore, the coil assembly can be prevented from interfering or being worn on the assembly of the stator assembly and the motor shell, and the coil assembly has the effects of preventing the coil assembly from being damaged, improving the convenience of assembly and the like.

Wherein the recess may be radially penetrating. Therefore, the concave part can be conveniently configured and molded, and the effect of improving the smoothness of liquid flow is achieved.

The number of the concave parts can be a plurality of the concave parts, and the concave parts can be arranged at equal angles. Thus, the concave part can be conveniently configured and molded, and the water inlet quantity is improved.

The stator set may have an insulating sleeve set combined to the silicon steel sheet set, and the notch may penetrate from the outer surface of the insulating sleeve set to the shoe part of the silicon steel sheet set. Therefore, the concave part can be conveniently formed, and the assembly convenience of the stator set and the motor shell is improved.

The notch may be connected to the top of the stator set. Therefore, the stator set can be assembled from the lower part of the motor shell, and the assembly convenience is improved.

The shell seat can be provided with a ring wall connected with a base plate to jointly form the containing chamber, and the inflow part can be arranged on the ring wall. Therefore, the liquid can be guided into the accommodating chamber from the lateral direction of the shell seat, and the effects of improving the smoothness of liquid suction and liquid suction, reducing the thickness of the whole liquid pump and the like are achieved.

Wherein the hole edge of the inflow part and the inner circumferential surface of the annular wall can be tangent or nearly tangent. Therefore, the introduced liquid can flow along the inner peripheral surface of the annular wall, and the effect of improving the smoothness of the liquid flow is achieved.

The motor housing may have an assembly seat having a first surface and a second surface opposite to the first surface, the first surface may face the annular wall, and the second liquid chamber may be recessed from the second surface. Therefore, the motor shell has simple structure and easy manufacture and assembly, and has the effects of improving the convenience of manufacture and assembly and the like.

The motor shell can be provided with an inner annular wall connected with the assembly seat, a shaft connecting plate can be connected with the inner annular wall and jointly form the first liquid chamber, a rotating shaft can be convexly arranged on the inner surface of the shaft connecting plate, the impeller can be sleeved on the rotating shaft through a bearing, a magnetic piece can be combined with the impeller and can be positioned in the first liquid chamber, and the magnetic piece and a silicon steel sheet group of the stator group can be radially opposite to each other through the inner annular wall. Therefore, the motor shell has simple structure and easy manufacture and assembly, and has the effects of improving the convenience of manufacture and assembly and the like.

The motor shell can be provided with an outer annular wall connected with the assembly seat, the outer annular wall can encircle the periphery of the inner annular wall, and the outer accommodating groove can be formed between the outer annular wall and the inner annular wall. Therefore, the motor shell has simple structure and easy manufacture and assembly, and has the effects of improving the convenience of manufacture and assembly and the like.

The low profile liquid pump may further include a sealing cap that may engage the motor housing and close the second liquid chamber. Therefore, the thin liquid pump has simple structure and easy manufacture and assembly, and has the effects of improving the convenience of manufacture and assembly and the like.

Wherein the impeller may have a plurality of blades located in the second liquid chamber. Therefore, the blades can pump out the liquid in the second liquid chamber by utilizing centrifugal force, and the efficiency of liquid flow is improved.

Wherein the first liquid chamber and the second liquid chamber may be in communication in an axial direction of the rotor set. Therefore, the liquid flow efficiency is improved.

The stator set may have a silicon steel sheet set, where the silicon steel sheet set may have a plurality of teeth connected to a yoke and spaced apart from each other, the number of the recesses may be a plurality, and the plurality of recesses may each penetrate through the yoke located between any two adjacent teeth. Therefore, each tooth part does not have a notch caused by the notch, so that the coil assembly can maintain normal winding operation and has the effect of improving the convenience of the winding operation.

Drawings

Fig. 1: an exploded perspective view of a first embodiment of the present utility model;

fig. 2: a perspective view of a stator of a first embodiment of the present utility model;

fig. 3: a combined cross-sectional view of the first embodiment of the present utility model;

fig. 4: a perspective view of a stator according to a second embodiment of the present utility model;

Fig. 5: a combined cross-sectional view of a second embodiment of the present utility model;

fig. 6: a stator according to a third embodiment of the present utility model is a perspective view.

Description of the reference numerals

1, Shell base

1A substrate

1B, annular wall

11 Inflow portion

12 Chamber of container

13 First opening

14 Second opening

2 Motor shell

21 First liquid chamber

22 Second liquid chamber

23 Flow inlet channel

24 Outflow portion

25 Outer container

26 Assembling seat

261 First surface

262 Second surface

27 Shaft-connecting plate

271 Rotation axis

28 Inner annular wall

29 Outer annular wall

3 Stator group

31 Insulating sleeve group

32 Silicon steel sheet group

321 Yoke portion

322 Tooth portion

323 Boot portion

33 Concave part

34 Coil set

35 Circuit board

4 Rotor set

41 Impeller wheel

411 Blade

42 Bearing

43 Magnetic element

5 Sealing cover

E, hole edge

R rubber ring

T-shaped sealing gasket

W is the inner peripheral surface.

Detailed Description

In order to make the above and other objects, features and advantages of the present utility model more comprehensible, preferred embodiments accompanied with figures are described in detail below; in addition, the same symbols in different drawings are denoted as the same, and the description thereof will be omitted.

Referring to fig. 1, a thin liquid pump according to a first embodiment of the present utility model includes a housing 1, a motor housing 2, a stator assembly 3 and a rotor assembly 4, wherein the housing 1 is connected to the motor housing 2, and the stator assembly 3 and the rotor assembly 4 are located in the housing 1 and the motor housing 2.

Referring to fig. 1 and 3, the housing 1 has an inflow portion 11 communicating with a chamber 12, so that liquid can flow into the chamber 12 from the outside of the housing 1 through the inflow portion 11. The present utility model is not limited to the housing 1, for example, the housing 1 of the present embodiment may have a base plate 1a and a ring wall 1b, and the ring wall 1b connects the base plate 1a to form the chamber 12 together. The base plate 1a may have a first opening 13, and the inner periphery of the annular wall 1b may form a second opening 14 at the opposite side of the base plate 1 a. The inflow portion 11 may be, for example, a tube, or a channel formed in the housing 1; the inflow portion 11 may be provided on the annular wall 1b to introduce the liquid into the chamber 12 from the lateral direction of the housing 1. The hole edge E of the inflow portion 11 may be tangent or nearly tangent to the inner circumferential surface W of the annular wall 1b, so that the introduced liquid may flow along the inner circumferential surface W of the annular wall 1b to improve the smoothness of flow.

The motor housing 2 has a first liquid chamber 21 and a second liquid chamber 22, and the first liquid chamber 21 and the second liquid chamber 22 can communicate in the axial direction of the rotor set 4. When the motor housing 2 is combined with the housing base 1, the first liquid chamber 21 is located in the accommodating chamber 12, and the motor housing 2 is provided with at least one liquid inlet channel 23 which is communicated with the first liquid chamber 21 and the accommodating chamber 12, the motor housing 2 is additionally provided with an outflow part 24 which is communicated with the second liquid chamber 22, and an outer accommodating groove 25 for accommodating the stator set 3.

The present utility model is not limited to the motor housing 2, for example, the motor housing 2 of the present embodiment may have an assembling seat 26, the assembling seat 26 may have a first surface 261 and a second surface 262 opposite to each other, the first surface 261 of the assembling seat 26 may face the annular wall 1b of the housing 1, and the second liquid chamber 22 may be formed by recessing the second surface 262 toward the first surface 261. The outflow portion 24 may be, for example, a tube, or a channel formed in the assembly seat 26; the outflow portion 24 may penetrate through an outer circumferential surface of the assembly seat 26 to guide the liquid in the second liquid chamber 22 laterally from the motor housing 2. In addition, the inflow portion 11 provided on the housing 1 and the outflow portion 24 provided on the motor housing 2 may be selectively provided on the same side or different sides according to the pipeline configuration requirements, which is understood by those skilled in the art, and is not limited to the disclosed embodiments.

The motor housing 2 may further have a shaft coupling plate 27 and an inner annular wall 28, the shaft coupling plate 27 being connected to the inner annular wall 28 to be substantially cup-shaped and form the first liquid chamber 21 inside. The inner annular wall 28 connects the first surface 261 of the assembly seat 26, and the inner surface of the shaft plate 27 can face the first liquid chamber 21 and the second liquid chamber 22, so that the first liquid chamber 21 is axially communicated with the second liquid chamber 22; the inner surface of the shaft coupling plate 27 may be additionally provided with a rotation shaft 271. The motor housing 2 may have an outer annular wall 29, which outer annular wall 29 may likewise connect the first surface 261 of the assembly seat 26; the outer annular wall 29 surrounds the outer periphery of the inner annular wall 28 and is spaced apart from the inner annular wall 28 to form the outer vessel 25 between the outer annular wall 29 and the inner annular wall 28 and to surround the outer vessel 25 around the outer periphery of the first liquid chamber 21.

When the motor housing 2 and the housing 1 are assembled, the first surface 261 of the assembling seat 26 can abut against the annular wall 1b of the housing 1, the outer annular wall 29 can abut against the base plate 1a of the housing 1, so that the motor housing 2 covers the second opening 14 of the housing 1, the shaft connecting plate 27 and the inner annular wall 28 can penetrate into the accommodating chamber 12 and align in the first opening 13 of the housing 1, and the stator set 3 can be assembled into the outer accommodating groove 25 from the first opening 13 of the housing 1.

Referring to fig. 2 and 3, the stator assembly 3 may have an insulation sleeve 31 combined with a silicon steel sheet 32 to form a ring shape with a hollow interior; the silicon steel sheet set 32 has a yoke 321, a plurality of teeth 322 and a plurality of shoes 323, the yoke 321 is ring-shaped, the teeth 322 are connected to the yoke 321 and spaced apart from each other, and the shoes 323 are connected to the teeth 322. The stator set 3 has at least one notch 33, and the notch 33 can be formed by penetrating from the outer surface of the stator set 3 to a hollow part inside the stator set 3, for example, by removing material, or by injection molding a silicon steel sheet set 32 with a shape corresponding to the notch 33 with soft magnetic material, and combining the silicon steel sheet set 32 with an insulating sleeve set 31 with a corresponding shape; in this embodiment, the outer surface of the stator set 3 may be the outer peripheral surface of the insulating sleeve 31, and the notch 33 may penetrate from the outside to the inside of the tooth portion 322 or the yoke portion 321 of the silicon steel sheet set 32, and may generally form a notch in the shoe portion 323 of the silicon steel sheet set 32.

The concave portions 33 may radially penetrate, and when the number of the concave portions 33 is several, the concave portions 33 may be optionally disposed at equal angles. In addition, the notch 33 may be connected to the top of the stator set 3, so that when the stator set 3 is placed in the outer container 25, the notch 33 corresponds to the liquid inlet channel 23; that is, the portion of the motor housing 2 where the liquid inlet flow passage 23 is formed can be positioned and accommodated in the recess 33.

After the stator set 3 is formed into the notch 33, a coil set 34 can be wound around the teeth 322 of the silicon steel sheet set 32, so as to generate a magnetic field after the coil set 34 is electrified. The coil assembly 34 can reduce the number of windings in the tooth portion 322 with the notch portion 33, so as to prevent the coil assembly 34 from interfering or wearing the assembly of the stator assembly 3 and the motor housing 2.

The stator set 3 may further have a circuit board 35 electrically connected to the coil set 34, and a sealing pad T may be combined with the housing 1 and close the first opening 13 to seal the stator set 3 to prevent the stator set 3 from contacting with water.

Referring to fig. 1 and 3 again, the rotor set 4 has an impeller 41 rotatable relative to the motor housing 2, and the impeller 41 has a plurality of blades 411 disposed in the second liquid chamber 22 of the motor housing 2. In this embodiment, the center of the impeller 41 may have a bearing 42, and the bearing 42 may be sleeved on the rotation shaft 271, so that the impeller 41 may smoothly rotate relative to the rotation shaft 271. A magnetic member 43 is coupled to the impeller 41 and located in the first liquid chamber 21 so as to be radially opposite to the silicon steel sheet set 32 of the stator set 3 via the inner annular wall 28.

In addition, the thin liquid pump of the present embodiment may further have a sealing cover 5, and the sealing cover 5 is coupled to the motor housing 2 in a liquid-tight manner and serves to close the second liquid chamber 22. For example, at least one rubber ring R may be disposed between the sealing cover 5 and the motor housing 2 in the present embodiment, and the sealing cover 5 presses against the rubber ring R to deform to closely contact the motor housing 2. In addition, the same or similar structures may be employed to form a liquid-tight between the assembly seat 26 of the motor housing 2 and the annular wall 1b of the housing seat 1, and between the outer annular wall 29 of the motor housing 2 and the base plate 1a of the housing seat 1.

When the thin liquid pump of the present embodiment is used, the stator set 3 can drive the rotor set 4 to rotate so as to draw the liquid into the chamber 12 from the inflow portion 11 of the housing 1; the liquid can flow along the inner peripheral surface W of the annular wall 1b, and flow into the first liquid chamber 21 through the liquid inlet flow channel 23, then flow to the second liquid chamber 22, and finally be pumped out through the outflow portion 24.

Referring to fig. 4 and 5, which are the second embodiment of the slim pump of the present utility model, the present embodiment is substantially the same as the first embodiment, in this embodiment, the notch portion 33 of the stator set 3 may be dug wider and larger, and the coil set 34 may not even be wound, corresponding to the tooth portion 322 with the notch caused by the notch portion 33, and the rotor set 4 may also operate normally. Therefore, the inlet flow passage 23 corresponding to the notch portion 33 can be made wider and larger, contributing to the increase in the amount of water to be added. In the present embodiment, only a single notch 33 is schematically provided, but the number of notches 33 may be plural, and the number of teeth 322 not wound at all may be plural.

Referring to fig. 6, which is a third embodiment of the slim pump of the present utility model, the present embodiment is substantially the same as the first embodiment described above, and the present embodiment selects to make all the notches 33 of the stator set 3 penetrate inward toward the yoke 321 between any two adjacent teeth 322, so that each tooth 322 does not have a notch caused by the notch 33, and the coil set 34 can maintain normal winding operation.

In summary, according to the slim pump of the present utility model, the liquid inlet channel and the recess are respectively provided in the motor housing and the stator assembly, so that the stator assembly can make a part of the installation space for the liquid to flow through, thereby saving the liquid inlet space above the impeller, and realizing the slim overall pump.

Although the present utility model has been described with reference to the above preferred embodiments, it should be understood that the present utility model is not limited thereto, and that various changes and modifications can be made by one skilled in the art without departing from the spirit and scope of the present utility model.

Claims

1. A slim liquid pump, comprising:

a housing having an inflow portion communicating with a chamber;

A motor housing having a first fluid chamber and a second fluid chamber in communication, the first fluid chamber being located in the chamber, the motor housing having at least one fluid inlet channel in communication with the first fluid chamber and the chamber, the motor housing having an outflow in communication with the second fluid chamber, the motor housing having an outer vessel;

The stator group is provided with at least one notch part, the stator group is positioned in the outer accommodating groove, and the notch part corresponds to the liquid inlet flow channel; and

A rotor set having an impeller is rotatably disposed in the motor housing.

2. The slim pump of claim 1, wherein the stator pack has a silicon steel sheet pack, the notch penetrates from outside to inside toward teeth or yokes of the silicon steel sheet pack, and a coil pack reduces or does not wind the number of windings at teeth provided with the notch.

3. The slim liquid pump of claim 2, wherein the recess is radially perforated.

4. The slim liquid pump of claim 3, wherein the number of indentations is a plurality, the plurality of indentations being equiangularly disposed.

5. The slim liquid pump of claim 2, wherein the stator pack has an insulation sleeve coupled to the silicon steel sheet pack, and the recess penetrates inward from an outer circumferential surface of the insulation sleeve to a shoe portion of the silicon steel sheet pack.

6. The slim pump of claim 2, wherein the recess communicates to a top of the stator assembly.

7. The slim liquid pump of claim 1, wherein said housing has a wall connecting a base plate to form said chamber, said inflow portion being provided on said wall.

8. The slim liquid pump of claim 7, wherein the orifice rim of the inflow is tangential or nearly tangential to the inner circumference of the annular wall.

9. The slim liquid pump of claim 7, wherein said motor housing has an assembly base, said assembly base having a first surface and a second surface opposite, said first surface facing said annular wall, said second liquid chamber being recessed from said second surface.

10. The slim liquid pump of claim 9, wherein the motor housing has an inner circumferential wall connected to the assembly base, a shaft coupling plate connected to the inner circumferential wall and forming the first liquid chamber together, a rotation shaft protruding from an inner surface of the shaft coupling plate, the impeller being sleeved on the rotation shaft by a bearing, a magnetic member coupled to the impeller and located in the first liquid chamber, the magnetic member being radially opposite to a silicon steel sheet set of the stator set via the inner circumferential wall.

11. The slim liquid pump of claim 10, wherein said motor housing has an outer annular wall connected to said assembly base, said outer annular wall surrounding the outer periphery of said inner annular wall, said outer housing being formed between said outer annular wall and said inner annular wall.

12. The slim liquid pump of claim 9, further comprising a sealing cover engaging the motor housing and closing the second liquid chamber.

13. The slim pump of claim 1, wherein said impeller has a plurality of vanes located in said second fluid chamber.

14. The slim liquid pump of claim 1, wherein said first liquid chamber communicates with said second liquid chamber in an axial direction of said rotor set.

15. The slim pump of claim 1, wherein the stator pack has a silicon steel sheet pack having a plurality of teeth connected to a yoke and spaced apart from each other, the plurality of recesses extending inwardly through the yoke between any two adjacent teeth.