Evacuation-preventing centrifugal pump for thermos bottle and thermos bottle with evacuation-preventing centrifugal pump

Abstract

The utility model discloses an anti-evacuation centrifugal pump for a thermos bottle and the thermos bottle with the anti-evacuation centrifugal pump, the centrifugal pump comprises a front shell and an impeller, the front end of the front shell is provided with a water inlet perpendicular to the axis of the front shell, and a water inlet channel is formed in the water inlet; a pump cavity communicated with the water inlet channel is formed at the rear end of the front shell; the impeller is rotationally arranged in the pump cavity and is coaxial with the front shell. The front shell is further provided with an exhaust hole communicated with the pump cavity and the water inlet channel, and water vapor in the pump cavity can be exhausted into the water inlet channel through the exhaust hole. Therefore, the exhaust hole communicating with the pump cavity and the water inlet channel is formed in the front shell of the centrifugal pump, so that water vapor accumulated in the pump cavity can be discharged into the water inlet channel through the exhaust hole, the air binding phenomenon is avoided, and it is guaranteed that the centrifugal pump can work normally to achieve smooth water outlet.

Description

Technical Field

[0001] The utility model relates to the technical field of water bottles, in particular to an anti-evacuation centrifugal pump for a water bottle and a water bottle having the same. Background Art

[0002] This section only provides background information related to the present application to help those skilled in the art understand the present application more thoroughly and accurately, and it is not necessarily prior art.

[0003] The existing centrifugal pump is a pump that transports liquid by the centrifugal force generated by the rotation of the impeller. When the impeller in the centrifugal pump is driven by the motor to rotate, the fluid filled between the blades will rotate with the impeller. Under the action of centrifugal force, the fluid will be thrown out from the grooves between the blades and discharged from the water outlet on the pump shell. The outflow of the fluid will cause a vacuum to form in the impeller inlet space, and the external fluid will be automatically sucked into the impeller for replenishment under the action of atmospheric pressure. Since the centrifugal pump works continuously, the fluid is sucked in and discharged, forming a continuous flow of the fluid, thereby continuously transporting the fluid.

[0004] When a centrifugal pump is used on a kettle, the water in the kettle rotates with the impeller. Under high-speed rotation, the water begins to boil and produce water vapor. The density of the water vapor decreases and is less affected by the centrifugal force. It cannot be discharged from the water outlet on the outer casing along with the water flow, thus forming an air binding phenomenon. Negative pressure is formed at the top of the impeller, and the water flow cannot be sucked in to replenish, resulting in a vacuum phenomenon, which leads to uneven water flow or interruption of flow. Utility Model Content

[0005] In order to overcome the defects described in the above-mentioned prior art, the utility model provides an anti-evacuation centrifugal pump for a water bottle and a water bottle having the same. By arranging an exhaust hole on the centrifugal pump, the water vapor accumulated in the pump chamber can be discharged through the exhaust hole, avoiding the occurrence of air binding, thereby ensuring that the centrifugal pump can work normally to achieve smooth water discharge.

[0006] The technical solution adopted by the utility model to solve the problem is:

[0007] An anti-evacuation centrifugal pump for a water bottle, comprising:

[0008] The front housing has a water inlet at its front end which is perpendicular to its axis, and a water inlet channel is formed inside the water inlet; a pump chamber connected to the water inlet channel is formed at the rear end of the front housing;

[0009] An impeller rotatably disposed in the pump chamber and coaxially disposed with the front housing;

[0010] The front shell is also provided with exhaust holes respectively connecting the pump chamber and the water inlet channel, and the water vapor in the pump chamber can be discharged into the water inlet channel through the exhaust holes.

[0011] Furthermore, the exhaust hole is located at the top of the pump chamber and is arranged close to the front end of the impeller.

[0012] Furthermore, the front shell includes an extending portion partially extending into the water inlet, and the exhaust hole is at least one through hole opened on the extending portion, and the opening of the through hole is vertically upward.

[0013] Furthermore, the through hole has a diameter of 2 to 5 mm.

[0014] Furthermore, it also includes a drive motor and a rear shell connected to the rear end of the front shell, the front end of the rear shell defines an installation cavity, the drive motor is installed at the rear end of the rear shell and the output shaft of the drive motor extends into the installation cavity and is used for transmission connection with the impeller.

[0015] Furthermore, it also includes an active magnetic block sleeved on the output shaft and located in the mounting cavity, and a driven magnetic block arranged in the impeller and adsorbed with the active magnetic block; when the drive motor is started and the output shaft is driven to rotate, the impeller can be driven to rotate through the adsorption and cooperation between the active magnetic block and the driven magnetic block.

[0016] Furthermore, it also includes a partition plate arranged between the front shell and the rear shell and used to separate the pump chamber from the installation chamber, and a shaft body is provided at the front end of the partition plate, and the impeller is sleeved on the shaft body and can rotate around the shaft body.

[0017] Furthermore, it also includes a first sealing ring arranged between the rear end of the front shell and the front end of the partition, and / or a second sealing ring arranged between the rear end of the partition and the front end of the rear shell, wherein:

[0018] When the front shell is connected to the rear shell, the first sealing ring abuts against the front shell and the partition respectively to achieve waterproof sealing, and / or the second sealing ring abuts against the rear shell and the partition respectively to achieve waterproof sealing.

[0019] Furthermore, it also includes a water outlet arranged on the side of the front shell, and the water outlet is arranged perpendicular to the water inlet; a water outlet channel connected to the pump chamber is formed inside the water outlet.

[0020] In addition, the utility model also provides a water bottle, including an inner liner and the above-mentioned anti-evacuation centrifugal pump, the bottom of the inner liner is provided with a water outlet hole and a water inlet pipe arranged at the water outlet hole, and the water inlet pipe is connected to the water inlet.

[0021] To sum up, the utility model provides an anti-evacuation centrifugal pump for a water bottle and a water bottle having the same, by opening an exhaust hole connecting the pump chamber and the water inlet channel respectively on the front shell of the centrifugal pump, so that the water vapor accumulated in the pump chamber can be discharged into the water inlet channel through the exhaust hole, thereby avoiding the occurrence of air binding and ensuring that the centrifugal pump can work normally to achieve smooth water discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of the anti-evacuation centrifugal pump for a water bottle of the utility model;

[0023] Figure 2 It is a schematic diagram of the explosion of the anti-evacuation centrifugal pump for the water bottle of the utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the front housing of the anti-evacuation centrifugal pump for a water bottle of the utility model;

[0025] Figure 4 It is a cross-sectional schematic diagram of the front housing of the utility model anti-evacuation centrifugal pump for a water bottle;

[0026] Figure 5 It is a cross-sectional schematic diagram of the utility model of the anti-evacuation centrifugal pump for the water bottle;

[0027] Figure 6 It is a partial structural schematic diagram of the water boiler of the utility model.

[0028] The meanings of the reference numerals are as follows:

[0029] 1. Centrifugal pump; 11. Front housing; 111. Pump chamber; 112. Water inlet; 1121. Water inlet channel; 113. Water outlet; 1131. Water outlet channel; 114. Exhaust hole; 115. Extension part; 12. Impeller; 13. Rear housing; 131. Mounting chamber; 14. Driving motor; 141. Output shaft; 15. Active magnetic block; 16. Partition; 161. Shaft body; 17. First sealing ring; 18. Driven magnetic block; 2. Inner tank; 21. Water inlet pipe; 3. Water outlet pipe. DETAILED DESCRIPTION

[0030] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0031] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the modules or components referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0033] Embodiment 1

[0034] See also Figure 1-5 The utility model provides an anti-evacuation centrifugal pump 1 for a water bottle, comprising a front housing 11 and an impeller 12. The front housing 11 is provided with a water inlet 112 arranged perpendicularly to its axis at the front end, and a water inlet channel 1121 is formed inside the water inlet 112; a pump chamber 111 connected to the water inlet channel 1121 is formed at the rear end of the front housing 11; the impeller 12 is rotatably arranged in the pump chamber 111 and is coaxially arranged with the front housing 11; a water outlet 113 arranged perpendicularly to its axis is provided on the side of the front housing 11, and the water outlet 113 and the water inlet 112 are arranged perpendicularly to each other; a water outlet channel 1131 connected to the pump chamber 111 is formed inside the water outlet 113.

[0035] Therefore, during the normal operation of the centrifugal pump 1, the impeller 12 is driven to rotate, and the rotation of the impeller 12 forms a negative pressure in the pump chamber 111. External liquid can enter the pump chamber 111 from the water inlet channel 1121, and under the action of the centrifugal force of the impeller 12, the liquid in the pump chamber 111 is discharged from the water outlet channel 1131.

[0036] It should be noted that when the centrifugal pump 1 is applied to a water bottle, since the inner tank 2 of the water bottle contains boiling water, when the water rotates with the impeller 12, the water begins to boil and produces water vapor under high-speed rotation. The density of the water vapor decreases and is less affected by the centrifugal force. It is easy to accumulate at the top of the pump chamber 111 and cannot be discharged from the water outlet channel 1131 along with the water flow, thereby forming an air binding phenomenon. Therefore, in order to solve the above phenomenon, the front housing 11 is also provided with an exhaust hole 114 that connects the pump chamber 111 and the water inlet channel 1121 respectively. The water vapor accumulated inside the pump chamber 111 can be discharged into the water inlet channel 1121 through the exhaust hole 114, thereby avoiding the occurrence of the air binding phenomenon, and then ensuring that the centrifugal pump 1 can work normally to achieve smooth water discharge.

[0037] It can be understood that when the impeller 12 rotates, a negative pressure is formed at the front end of the impeller 12, causing water vapor to accumulate in the top area of ​​the pump chamber 111; therefore, in order to quickly discharge the water vapor accumulated at this position, preferably, the exhaust hole 114 of the present application is located at the top of the pump chamber 111 and close to the front end of the impeller 12, so as to achieve rapid exhaust, thereby greatly improving the exhaust efficiency and ensuring smooth water discharge.

[0038] For details, see Figure 3-4 , the front shell 11 also includes an insertion portion 115 that partially extends into the water inlet 112, and the exhaust hole 114 is a through hole opened on the insertion portion 115, and the opening of the through hole is arranged upward. Thus, the front shell 11 is partially extended into the water inlet 112 and the exhaust hole 114 is opened at the inserted position, so that the overall structure of the front shell 11 is more compact and smaller in size. In contrast, if the exhaust hole 114 is arranged outside the water inlet 112, an additional connecting air pipe is required to connect the exhaust hole 114 and the water inlet 112, which not only leads to a complicated structure, but also a larger volume and higher cost. Therefore, the design of the present application can make the centrifugal pump 1 more miniaturized and compact, thereby further reducing costs.

[0039] In this embodiment, one through hole is provided; of course, in other embodiments, multiple through holes may be provided to improve the exhaust efficiency, which is not limited here.

[0040] Of course, in order to better achieve steam exhaust, it is also necessary to limit the aperture size of the through hole. If the aperture of the through hole is large, when boiling water enters the pump chamber 111 through the water inlet channel 1121, part of the boiling water will also enter the pump chamber 111 through the through hole, thereby blocking the steam exhaust; similarly, if the aperture of the through hole is small, its exhaust efficiency is correspondingly low, resulting in unsmooth steam exhaust. Therefore, in this embodiment, the aperture size of the through hole is preferably 2 to 5 mm.

[0041] See also Figure 2 and Figure 5 The centrifugal pump 1 further includes a rear housing 13 connected to the rear end of the front housing 11 and a driving motor 14 installed at the rear end of the rear housing 13. The front end of the rear housing 13 is formed with a mounting cavity 131. The output shaft 141 of the driving motor 14 extends into the mounting cavity 131 and is used for transmission connection with the impeller 12. Specifically, it also includes an active magnetic block 15 sleeved on the output shaft 141 and located in the mounting cavity 131, and a driven magnetic block 18 disposed in the impeller 12 and adsorbed by the active magnetic block 15. When the driving motor 14 is started and the output shaft 141 is driven to rotate, the active magnetic block 15 and the driven magnetic block 18 can be adsorbed and cooperated to drive the impeller 12 to rotate.

[0042] Furthermore, it also includes a partition 16 disposed between the front housing 11 and the rear housing 13 and used to separate the pump chamber 111 from the installation chamber 131. The front end of the partition 16 is integrally formed with a shaft 161. The impeller 12 is sleeved on the shaft 161 and can rotate around the shaft 161. In addition, it also includes a first sealing ring 17 disposed between the front end of the partition 16 and the rear end of the front housing 11. When the front housing 11 is connected to the rear housing 13, the upper and lower ends of the first sealing ring 17 are respectively in contact with the front housing 11 and the partition 16 to achieve waterproof sealing, thereby preventing water from entering the rear housing 13.

[0043] Of course, in other embodiments, a second sealing ring may be further provided between the rear end of the partition 16 and the front end of the rear shell 13. When the front shell 11 is connected to the rear shell 13, the second sealing ring abuts against the rear shell 13 and the partition 16 respectively to achieve a waterproof seal, thereby further improving the waterproof performance of the centrifugal pump 1.

[0044] Embodiment 2

[0045] See also Figure 6 The utility model also provides a water bottle, including an inner liner 2, a water inlet pipe 21, a water outlet pipe 3 and the anti-evacuation centrifugal pump 1 of the above-mentioned embodiment 1, a water outlet hole is opened at the bottom of the inner liner 2, the water inlet pipe 21 is arranged at the water outlet hole and connected to the water inlet 112 of the centrifugal pump 1, and the water outlet 113 of the centrifugal pump 1 is connected to the water outlet pipe 3.

[0046] Therefore, when the centrifugal pump 1 is started, the boiled water in the inner tank 2 can be pumped out and sequentially flows through the water inlet pipe 21, the water inlet 112, the pump chamber 111, the water outlet 113 and the water outlet pipe 3 for drinking by the user.

[0047] In summary, the utility model provides an anti-evacuation centrifugal pump 1 for a water bottle and a water bottle having the same, by opening an exhaust hole 114 connecting the pump chamber 111 and the water inlet channel 1121 respectively on the front shell 11 of the centrifugal pump 1, so that the water vapor accumulated in the pump chamber 111 can be discharged into the water inlet channel 1121 through the exhaust hole 114, thereby avoiding the occurrence of air binding and ensuring that the centrifugal pump 1 can work normally to achieve smooth water discharge.

[0048] It should be understood that the orientations or positional relationships indicated by the terms "top", "bottom", "inside", "outside", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the modules or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0049] In addition, in the description of the present utility model, "plurality" and "several" mean two or more than two, unless otherwise clearly and specifically defined.

[0050] The technical means disclosed in the solution of the utility model are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical solutions composed of any combination of the above technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications are also regarded as the protection scope of the utility model.

Claims

1. A centrifugal pump for preventing vacuuming of a water bottle, characterized in that: include: The front housing has a water inlet at its front end which is perpendicular to its axis, and a water inlet channel is formed inside the water inlet; a pump chamber connected to the water inlet channel is formed at the rear end of the front housing; An impeller rotatably disposed in the pump chamber and coaxially disposed with the front housing; The front shell is also provided with exhaust holes respectively connecting the pump chamber and the water inlet channel, and the water vapor in the pump chamber can be discharged into the water inlet channel through the exhaust holes.

2. The anti-evacuation centrifugal pump for a water bottle according to claim 1, characterized in that: The exhaust hole is located at the top of the pump chamber and is arranged close to the front end of the impeller.

3. The anti-evacuation centrifugal pump for a water bottle according to claim 1 or 2, characterized in that: The front shell includes an extending portion partially extending into the water inlet, and the exhaust hole is at least one through hole opened on the extending portion, and the opening of the through hole is vertically upward.

4. The anti-evacuation centrifugal pump for a water bottle according to claim 3, characterized in that: The diameter of the through hole is 2-5 mm.

5. The anti-evacuation centrifugal pump for a water bottle according to claim 1, characterized in that: It also includes a drive motor and a rear shell connected to the rear end of the front shell, the front end of the rear shell defines a mounting cavity, the drive motor is mounted at the rear end of the rear shell, and the output shaft of the drive motor extends into the mounting cavity and is used for transmission connection with the impeller.

6. The anti-evacuation centrifugal pump for a water bottle according to claim 5, characterized in that: It also includes an active magnetic block which is sleeved on the output shaft and located in the mounting cavity, and a driven magnetic block which is arranged in the impeller and adsorbed to the active magnetic block; when the drive motor is started and the output shaft is driven to rotate, the impeller can be driven to rotate through the adsorption and cooperation between the active magnetic block and the driven magnetic block.

7. The anti-evacuation centrifugal pump for a water bottle according to claim 6, characterized in that: It also includes a partition plate which is arranged between the front shell and the rear shell and is used to separate the pump chamber from the installation chamber. A shaft body is arranged at the front end of the partition plate. The impeller is sleeved on the shaft body and can rotate around the shaft body.

8. The anti-evacuation centrifugal pump for a water bottle according to claim 7, characterized in that: It also includes a first sealing ring arranged between the rear end of the front housing and the front end of the partition, and / or a second sealing ring arranged between the rear end of the partition and the front end of the rear housing, wherein: When the front shell is connected to the rear shell, the first sealing ring abuts against the front shell and the partition respectively to achieve waterproof sealing, and / or the second sealing ring abuts against the rear shell and the partition respectively to achieve waterproof sealing.

9. The anti-evacuation centrifugal pump for a water bottle according to claim 1, characterized in that: It also includes a water outlet arranged on the side of the front shell, and the water outlet is arranged perpendicular to the water inlet; a water outlet channel connected to the pump chamber is formed inside the water outlet.

10. A water bottle, characterized in that: It comprises an inner tank and an anti-evacuation centrifugal pump as claimed in any one of claims 1 to 9, wherein a water outlet hole and a water inlet pipe arranged at the water outlet hole are provided at the bottom of the inner tank, and the water inlet pipe is connected to the water inlet.

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