Water pump with self-exhausting function
By designing a self-venting function in the centrifugal water pump and utilizing the combination of the suction port and the exhaust channel, the problem of insufficient vacuum caused by residual air is solved, resulting in higher suction pressure and stability, and extending service life.
Patent Information
- Application Number
- CN202520118938.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-19
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2035-01-19
AI Technical Summary
When existing centrifugal water pumps are first started or after being left to stand, air often remains in the outlet pipe and pump chamber, resulting in insufficient vacuum and insufficient suction pressure, which is difficult for users to resolve on their own.
Design a water pump with self-venting function. By setting an intake port and an exhaust channel between the suction chamber section and the impeller chamber section, the rotation of the rotor-impeller assembly is used to discharge air through the exhaust channel, ensuring that the chamber is filled with liquid medium.
It achieves higher suction pressure, improves the performance and stability of the water pump, and extends its service life.
Smart Images
Figure CN223608813U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to electronic water pump technical field, concretely is a water pump with self exhaust function. BACKGROUND
[0002] Electronic water pump has higher output efficiency and can realize accurate flow control, therefore, electronic water pump is widely used in household appliances, automobile and industrial equipment, for example, water heating mattress, air conditioner, dish washer, floor cleaning robot and humidifying electric appliance and so on household appliances, in order to realize accurate liquid circulation / discharge function, at present, more and more electronic water pumps are equipped.
[0003] Centrifugal water pump is an important type of electronic water pump, which produces centrifugal phenomenon through rotating impeller to drive liquid medium flow.
[0004] The centrifugal water pump in prior art, after first use or standing for a period of time, air will be left in the water outlet pipe and pump cavity, if the water outlet pipe and pump cavity are not filled with water or the air in the water outlet pipe and pump cavity is not completely pumped out, the vacuum degree of pump cavity will be insufficient, thereby the water suction pressure of centrifugal water pump is insufficient.
[0005] The usual solution to the above problem is to continue to fill water or pump out the air in the water inlet pipe, however, the above operation needs certain professional training or special equipment, which is difficult for some users to realize.
[0006] In summary, how to provide self exhaust function for centrifugal water pump becomes one of the problems to be solved. UTILITY MODEL CONTENT
[0007] The utility model aims at providing a water pump with self exhaust function, which has self exhaust function and thereby obtains higher water suction pressure.
[0008] To achieve the above object, the utility model provides the following technical scheme: a water pump with self exhaust function, it at least includes rotor -impeller assembly and stator assembly, it is along the axial direction, it is in turn with each other intercommunication suction chamber section, impeller chamber section and rotor chamber section, wherein, the suction chamber section at respectively with the air inlet and exhaust passage, the impeller chamber section at is equipped with the exhaust port, the rotor -impeller assembly is supported in the impeller chamber section and the rotor chamber section, the stator assembly is fixed outside the rotor chamber section, and it is equipped as being suitable with the rotor -impeller assembly occurs the magnetic coupling state, the stator assembly can magnetic coupling drive rotor -impeller assembly rotates in the impeller chamber section and the rotor chamber section, when the rotor -impeller assembly rotates, liquid medium is inhaled to the suction chamber section through the air inlet, and at least fills the impeller chamber section, until being discharged through the exhaust port, in the above process, at least the air that stays in the impeller chamber section and the suction chamber section, is discharged through the exhaust passage.
[0009] In the above technical scheme, the water pump with self exhaust function of the utility model further includes a pump cover member and a pump shell member fixedly combined with each other; a protruding structure is formed at the pump cover member; an inner cavity of the protruding structure is configured as the suction chamber section; and inner cavities of the pump shell member are sequentially configured as the impeller chamber section and the rotor chamber section.
[0010] In the above technical scheme, the air inlet is specifically an opening formed at the protruding structure of the pump cover member.
[0011] In the above technical scheme, the exhaust passage is specifically a through hole formed at the protruding structure of the pump cover member; or the exhaust passage is specifically a tubular structure formed at the protruding structure of the pump cover member.
[0012] In the above technical scheme, the water pump with self exhaust function of the utility model further includes a shaft core; the shaft core is fixed in the rotor chamber section; and the rotor-impeller assembly is sleeved and supported on the shaft core.
[0013] In the above technical scheme, the rotor-impeller assembly includes a functional structure and a permanent magnet; the functional structure includes an impeller section and a bracket section sequentially arranged along the axial direction; the permanent magnet is fixed at the bracket section of the functional structure; the impeller section of the functional structure is supported in the impeller chamber section, and the bracket section of the functional structure is supported in the impeller chamber section.
[0014] In the above technical scheme, the water pump with self exhaust function of the utility model further includes a driving circuit board; the driving circuit board is fixed outside the rotor chamber section and electrically connected with the stator assembly.
[0015] Compared with the prior art, the water pump with the self-venting function has the advantages that the suction chamber section is respectively provided with the suction port and the exhaust passage, the air in the impeller chamber section and the suction chamber section is discharged through the exhaust passage under the action of the pressure after the liquid medium is sucked into the suction port, the impeller chamber section and the suction chamber section are filled with the liquid medium, and thus the water pump can obtain higher water suction pressure, and the performance, stability and service life of the water pump are effectively improved. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 is a perspective view of the utility model.
[0017] Figure 2 is a perspective view of the utility model.
[0018] Figure 3 is an exploded view of the utility model.
[0019] Figure 4 is a sectional view of the utility model.
[0020] The reference signs are as follows: 1, pump cover member; 11, protruding structure; 2, pump shell member; 3, rotor-impeller assembly; 31, functional structure body; 311, support section; 312, impeller section; 32, permanent magnet; 4, stator assembly; 5, shaft core; 6, driving circuit board; 10, suction chamber section; 10a, suction port; 10b, exhaust passage; 20, impeller chamber section; 20a, discharge port; 30, rotor chamber section. DETAILED DESCRIPTION
[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.
[0022] The utility model provides a kind of water pump with self-venting function, it has self-venting function, and then obtain higher water suction pressure.
[0023] The technical solutions of the utility model are specifically described by taking centrifugal electronic water pump as an example.
[0024] Please refer to Figures 1-4 The water pump with self-venting function of the embodiment at least includes rotor-impeller assembly 3 and stator assembly 4.
[0025] The rotor-impeller assembly 3 is a rotor-impeller combination with permanent magnet.
[0026] The stator assembly 4 is a combination obtained by winding a predetermined number of turns of enameled wire on a stator core to form a plurality of windings, which can generate a rotating magnetic field in its inner ring after being energized.
[0027] The water pump with self-venting function of the embodiment is sequentially provided with the suction chamber section 10, the impeller chamber section 20 and the rotor chamber section 30 which are communicated with each other in the axial direction. In fact, the suction chamber section 10, the impeller chamber section 20 and the rotor chamber section 30 are all cavities in the water pump and can accommodate mechanical structures and liquid medium. The suction chamber section 10 is respectively provided with the suction port 10a and the vent passage 10b, and the impeller chamber section 20 is provided with the discharge port 20a.
[0028] The rotor-impeller assembly 3 is supported in the impeller chamber section 20 and the rotor chamber section 30. Specifically, the rotor-impeller assembly 3 is adapted to rotate in the impeller chamber section 20 and the rotor chamber section 30.
[0029] The stator assembly 4 is fixed outside the rotor chamber section 30 and is adapted to be magnetically coupled with the rotor-impeller assembly 3.
[0030] The stator assembly 4 can magnetically couple to drive the rotor-impeller assembly 3 to rotate in the impeller chamber section 20 and the rotor chamber section 30. When the rotor-impeller assembly 3 rotates, the liquid medium is sucked into the suction chamber section 10 through the suction port 10a and at least fills the impeller chamber section 20 until it is discharged through the discharge port 20a. During the above process, the air at least remaining in the impeller chamber section 20 and the suction chamber section 10 is discharged through the vent passage 10b.
[0031] It can be understood that during the above process, when the impeller chamber section 20 and the rotor chamber section 30 are not in airtight communication, the air remaining in the rotor chamber section 30 will also be discharged through the vent passage 10b.
[0032] The water pump with self-venting function of the embodiment further comprises the pump cover member 1 and the pump shell member 2 which are fixedly combined with each other. The pump cover member 1 is a cover-shaped body made of engineering plastic, and the pump shell member 2 is a semi-shell body made of engineering plastic. The pump cover member 1 is formed with the protruding structure 11 which is a protruding structure feature integrally formed on the pump cover member 1 and has an inner cavity. The inner cavity of the protruding structure 11 is configured as the suction chamber section 10. The inner cavity of the pump shell member 2 is sequentially configured as the impeller chamber section 20 and the rotor chamber section 30. In this way, the suction chamber section 10, the impeller chamber section 20 and the rotor chamber section 30 which are sequentially communicated in the axial direction are obtained.
[0033] It can be understood that the stator assembly 4 is fixed in the pump shell member 2.
[0034] Specifically, the suction port 10a, specifically the opening provided at the protruding structure 11 of the pump cover member 1, is a square opening provided at the bottom of the protruding structure 11 in this embodiment, which has a large suction area.
[0035] Specifically, referring to Figure 2 In some possible embodiments, the exhaust passage 10b, specifically the through hole provided at the protruding structure 11 of the pump cover member 1; or, referring to Figure 1 、 Figure 3 and Figure 4 In other possible embodiments, the exhaust passage 10b, specifically the tubular structure formed at the protruding structure 11 of the pump cover member 1; in this embodiment, the suction port 10a and the exhaust passage 10b are arranged on the upper and lower sides of the protruding structure 11, respectively, in a structure opposite to each other, so as to facilitate the exhaust passage 10b to fully exhaust air.
[0036] Specifically, the water pump with self-exhaust function in this embodiment further comprises a shaft core 5, which is a cylindrical metal shaft body; the shaft core 5 is fixed in the rotor chamber section 30, and in this embodiment, the bottom of the pump shell member 2 is formed with a plug-in seat, one end of the shaft core 5 is plugged into the plug-in seat, so as to fix the shaft core 5 in the rotor chamber section 30; the rotor-impeller assembly 3 is sleeved and supported on the shaft core 5, so that the rotor-impeller assembly 3 can rotate around the shaft core 5; in addition, in this embodiment, a gasket is arranged at the end face of the plug-in seat, so as to prevent the rotor-impeller assembly 3 from directly rubbing against the plug-in seat.
[0037] Specifically, the rotor-impeller assembly 3 comprises a functional structure 31 and a permanent magnet 32, wherein the functional structure 31 is an integrally formed engineering plastic member, and the permanent magnet 32 is a magnetic ring; the functional structure 31 comprises an impeller section 312 and a support section 311 arranged in sequence in the axial direction, wherein the support section 311 constitutes the overall mechanical support structure of the functional structure 31, and the impeller section 312 is provided with a plurality of blades for driving the flow of liquid medium; the permanent magnet 32 is fixed at the support section 311 of the functional structure 31, and in this embodiment, the permanent magnet 32 is placed in a forming mold of the functional structure 31, plastic material is injected into the forming mold, and after the plastic material is cooled and solidified, the permanent magnet 32 is integrated with the functional structure 31; the impeller section 312 of the functional structure 31 is supported in the impeller chamber section 20, and the support section 311 of the functional structure 31 is supported in the impeller chamber section 20.
[0038] It can be understood that bearings (for example, ceramic bearings or graphite bearings) can also be embedded in the support section 311 of the functional structure 31, so that the functional structure 31 is in rotational cooperation with the shaft core 5.
[0039] Specifically, the water pump with self-venting function of the embodiment further comprises a driving circuit board 6, which is a printed circuit board (PCB) and carries at least a main control, a stator driving module / chip and other necessary peripheral circuits; the driving circuit board 6 is fixed outside the rotor chamber section 30 (specifically, fixed at the end of the pump shell member 2) and electrically connected with the stator assembly 4 (specifically, electrically connected through terminals or connectors) to drive the stator assembly 4 to operate.
[0040] In use, the driving circuit board 6 inputs electric energy to the stator assembly 4, and the stator assembly 4 can generate a rotating magnetic field to magnetically couple and drive the rotor-impeller assembly 3 to rotate in the impeller chamber section 20 and the rotor chamber section 30 when powered on. When the rotor-impeller assembly 3 rotates, the impeller section 312 with blades rotates, the suction port 10a has a negative pressure, and the liquid medium is sucked into the suction chamber section 10 through the suction port 10a and at least fills the impeller chamber section 20, and is then discharged through the discharge port 20a, thereby completing the basic function of the water pump. During the above process, at least the air remaining in the impeller chamber section 20 and the suction chamber section 10 is discharged through the exhaust passage 10b.
[0041] The water pump with self-venting function of the embodiment is provided with the suction port 10a and the exhaust passage 10b at the suction chamber section 10, respectively. After the suction port 10a sucks in the liquid medium, at least the air remaining in the impeller chamber section 20 and the suction chamber section 10 is discharged through the exhaust passage 10b under the action of pressure, so that the impeller chamber section 20 and the suction chamber section 10 are both filled with the liquid medium, thereby enabling the water pump to obtain higher water suction pressure and effectively improving the performance, stability and service life of the water pump.
[0042] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. A water pump having a self-bleeding function, characterized by comprising: It at least comprises a rotor-impeller assembly and a stator assembly; It is sequentially provided with an intake chamber section, an impeller chamber section and a rotor chamber section which are communicated with each other in an axial direction, wherein the intake chamber section is respectively provided with an air inlet and an exhaust passage, and the impeller chamber section is provided with a discharge outlet; The rotor-impeller assembly is supported in the impeller chamber section and the rotor chamber section; The stator assembly is fixed outside the rotor chamber section and is configured to be in a state of magnetic coupling with the rotor-impeller assembly; The stator assembly can magnetically couple to drive the rotor-impeller assembly to rotate in the impeller chamber section and the rotor chamber section, and when the rotor-impeller assembly rotates, liquid medium is sucked into the intake chamber section through the air inlet and at least fills the impeller chamber section until it is discharged through the discharge outlet, and during the above process, air at least remaining in the impeller chamber section and the intake chamber section is discharged through the exhaust passage.
2. The water pump having a self-bleeding function according to claim 1, characterized by, It further comprises a pump cover member and a pump shell member which are fixedly combined with each other; A protruding structure is formed at the pump cover member, and an inner cavity of the protruding structure is configured as the intake chamber section; An inner cavity of the pump shell member is sequentially configured as the impeller chamber section and the rotor chamber section.
3. The water pump having a self-bleeding function according to claim 2, characterized by, The air inlet, in particular, is an opening formed at the protruding structure of the pump cover member.
4. The water pump having a self-bleeding function according to claim 2 or 3, characterized by, The exhaust passage, in particular, is a through hole formed at the protruding structure of the pump cover member. Alternatively, the exhaust passage, in particular, is a tubular structure formed at the protruding structure of the pump cover member.
5. The water pump having a self-bleeding function according to claim 1 or 2, characterized by, It further comprises a shaft core; The shaft core is fixed in the rotor chamber section; The rotor-impeller assembly is sleeved and supported on the shaft core.
6. The water pump having a self-bleeding function according to claim 5, characterized by The rotor-impeller assembly comprises a functional structure and a permanent magnet; The functional structure comprises an impeller section and a support section which are sequentially arranged in an axial direction; The permanent magnet is fixed at the support section of the functional structure; The impeller section of the functional structure is supported in the impeller chamber section, and the support section of the functional structure is supported in the impeller chamber section.
7. The water pump having a self-bleeding function according to claim 1 or 2, characterized by, It further comprises a driving circuit board; The driving circuit board is fixed outside the rotor chamber section and is electrically connected with the stator assembly.