CN218894761U

CN218894761U - Supercharging device and gas water heater

Info

Publication number: CN218894761U
Application number: CN202223592146.9U
Authority: CN
Inventors: 尹必行
Original assignee: Wuhu Midea Smart Kitchen Appliance Manufacturing Co Ltd
Current assignee: Wuhu Midea Smart Kitchen Appliance Manufacturing Co Ltd
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2023-04-21
Anticipated expiration: 2032-12-29

Abstract

The utility model discloses a supercharging device and a gas water heater, wherein the supercharging device comprises: the device comprises a shell, a plurality of impellers, a rotor component and a stator component, wherein the shell is provided with a water inlet and a water outlet, and a fixed shaft; the impellers are sleeved on the fixed shaft and positioned between the water inlet and the water outlet, and two adjacent impellers are matched through a connecting structure; the rotor component is arranged on the fixed shaft and connected with one impeller; the stator component cooperates with the rotor component to drive the rotor component in rotation. According to the supercharging device disclosed by the embodiment of the utility model, the plurality of impellers are arranged, so that the supercharging effect is realized after water entering the shell passes through the plurality of impellers, the stator part drives the rotor part to rotate through the connection between the rotor part and one impeller so as to directly drive the impeller to rotate, and the two adjacent impellers are connected through the connection structure, so that the impeller can drive the other impellers to rotate, namely, the linkage between the rotor part and the plurality of impellers is realized, and the structure can be simplified.

Description

Supercharging device and gas water heater

Technical Field

The utility model relates to the technical field of pressurization, in particular to a pressurizing device and a gas water heater.

Background

With the development of economy, gas water heaters are widely accepted by consumers due to energy conservation and convenience, however, in households on higher floors, because of insufficient water pressure, the gas water heater is often unable to be started or has poor experience, so there is room for improvement.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. To this end, an object of the present utility model is to propose a supercharging device which can achieve a better supercharging effect.

The utility model also provides a gas water heater.

According to an embodiment of the first aspect of the present utility model, a supercharging device includes: the device comprises a shell, a plurality of impellers, a rotor component and a stator component, wherein the shell is provided with a water inlet and a water outlet, and a fixed shaft is arranged on the shell; the impellers are sleeved on the fixed shaft and positioned between the water inlet and the water outlet, and two adjacent impellers are matched through a connecting structure; the rotor component is arranged on the fixed shaft and is connected with one impeller; the stator component cooperates with the rotor component to drive rotation of the rotor component.

According to the supercharging device disclosed by the embodiment of the utility model, the plurality of impellers are arranged, so that the supercharging effect can be realized after water entering the shell passes through the plurality of impellers, the stator part drives the rotor part to rotate through the connection between the rotor part and one impeller so as to directly drive the impeller to rotate, and the adjacent two impellers are connected through the connecting structure, so that the impellers can drive the rest impellers to rotate, namely, the linkage between the rotor part and the plurality of impellers is realized, the fixed shaft transmission is not needed, the stability of the whole structure is good, the structure can be simplified, the requirement on processing precision is reduced, the cost is further reduced, the transmission efficiency is improved, and the supercharging effect of the supercharging device can be further improved.

According to some embodiments of the utility model, the connecting structure comprises a connecting protrusion and a mating protrusion, the connecting protrusion and the mating protrusion are respectively arranged on two adjacent impellers, and the connecting protrusion and the mating protrusion are fixedly connected.

In some examples, the connection boss comprises a plurality of connection bosses spaced apart along the circumference of the impeller, a connection groove is defined between two adjacent connection bosses, the mating boss comprises a plurality of mating bosses spaced apart along the circumference of the impeller, a mating groove is defined between two adjacent mating bosses, wherein the connection boss is adapted to be plugged into the mating groove and the mating boss is adapted to be plugged into the connection groove.

In some examples, the connection protrusion and the mating protrusion form a ring shape, respectively.

According to some embodiments of the utility model, the rotor member is connected to one of the impellers by a plurality of connecting ribs, the plurality of connecting ribs being spaced apart along the circumference of the impeller.

According to some embodiments of the utility model, the rotor component is integrally formed with at least a portion of the impeller.

In some examples, the impeller includes a blade, a first cover plate, and a second cover plate, the blade is disposed between the first cover plate and the second cover plate, a middle portion of the first cover plate has an opening, and the second cover plate is fixedly connected with the rotor component.

According to some embodiments of the utility model, the supercharging device further comprises: the two limiting gaskets are respectively arranged at two ends of the fixed shaft, one limiting gasket is abutted with the impeller, and the other limiting gasket is abutted with the rotor component.

In some examples, the spacing pad is a ceramic pad.

According to some embodiments of the utility model, the stationary shaft is a ceramic piece.

According to some embodiments of the utility model, the housing comprises a first casing provided with the water inlet and a second casing provided with the water outlet, wherein two ends of the fixed shaft are respectively positioned on the first casing and the second casing.

In some examples, the supercharging device further comprises: and a water guide member provided between the adjacent two impellers, the water guide member being configured to guide water at an outlet of the upstream impeller to an inlet of the downstream impeller in a flow direction of the water.

According to the gas water heater disclosed by the embodiment of the second aspect of the utility model, the supercharging device comprises the supercharging device disclosed by the embodiment of the first aspect of the utility model, the supercharging device is provided with the impellers, so that water entering the supercharging device can realize a supercharging effect after passing through the impellers, the stator part drives the rotor part to rotate through the connection between the rotor part and one impeller, the rotor part can be directly driven to rotate, the two adjacent impellers are connected through the connection structure, the other impellers can be driven to rotate by the impeller, namely, the linkage between the rotor part and the impellers is realized, the structure of the supercharging device is simplified, the working stability of the supercharging device is improved, the miniaturization of the gas water heater is facilitated, the water pressure in the gas water heater is stable, the use effect of the gas water heater is ensured, and the use experience of a user is improved.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

fig. 1 is a schematic structural view of a supercharging device according to an embodiment of the present utility model;

fig. 2 is a cross-sectional view of a supercharging device in accordance with an embodiment of the present utility model;

FIG. 3 is a schematic view of a partial structure of a supercharging device according to an embodiment of the present utility model;

FIG. 4 is a schematic view of an impeller according to an embodiment of the present utility model;

FIG. 5 is a schematic structural view of an impeller and rotor assembly according to an embodiment of the present utility model;

FIG. 6 is a schematic view of a mounting structure of a water guide according to an embodiment of the present utility model;

fig. 7 is a schematic view of a mounting structure of a water guide in another view according to an embodiment of the present utility model.

Reference numerals:

the pressurizing means 100 is provided with a pressurizing means,

the shell 10, the water outlet flow channel 102, the first cover shell 11, the water inlet 111, the second cover shell 12, the water outlet 121,

the fixed shaft 20 is fixed to the outer circumference of the container,

impeller 30, impeller inlet 301, impeller outlet 302, first cover plate 31, vanes 32, second cover plate 33,

the connecting projection 41, the connecting boss 412, the connecting recess 411, the fitting projection 42, the fitting boss 422, the fitting recess 421,

the connection rib 50 is provided with a plurality of connection grooves,

the rotor member 60 is provided with a plurality of grooves,

the spacing pad 70 is provided with a plurality of spacers,

a water guide 80, a perforation 801, a water guide inlet 802, and a water guide outlet 803.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

A supercharging device 100 according to an embodiment of the present utility model is described below with reference to fig. 1 to 7.

As shown in fig. 1 to 7, a supercharging device 100 according to an embodiment of the present utility model includes: the device comprises a shell 10, a plurality of impellers 30, a rotor component 60 and a stator component (not shown in the figure), wherein the shell 10 is provided with a water inlet 111 and a water outlet 121, liquid can enter from the water inlet 111 and flow out through the water outlet 121 after passing through the plurality of impellers 30 so as to flow through the supercharging device 100, a fixed shaft 20 is arranged in the shell 10, the plurality of impellers 30 are sleeved on the fixed shaft 20, and the plurality of impellers 30 are positioned between the water inlet 111 and the water outlet 121, so that the plurality of impellers 30 are matched with each other, the multistage supercharging of the liquid flowing through the supercharging device 100 can be realized, and the supercharging effect can be improved; the rotor component 60 is arranged on the fixed shaft 20, the rotor component 60 can be connected with one impeller 30 in the plurality of impellers 30, the stator component and the rotor component 60 can be matched with each other, and the stator component can drive the rotor component 60 to rotate so as to drive the one impeller 30 to rotate; the adjacent two impellers 30 are connected through the connecting structure, so that the plurality of impellers 30 are linked, when the stator component drives the rotor component 60 to rotate, the plurality of impellers 30 can rotate together, and the linkage between the rotor component 60 and the plurality of impellers 30 is realized.

According to the supercharging device 100 of the embodiment of the utility model, by arranging the plurality of impellers 30, water entering the casing 10 can realize a supercharging effect through the plurality of impellers 30, through the connection between the rotor component 60 and one impeller 30, the stator component drives the rotor component 60 to rotate so as to directly drive the impellers 30 to rotate, and two adjacent impellers 30 are connected through the connection structure, so that the impellers 30 can drive the other impellers 30 to rotate, namely, the linkage between the rotor component 60 and the plurality of impellers 30 is realized, the fixed shaft 20 is not required to drive, the whole structure stability is good, the structure can be simplified, the requirement on processing precision is reduced, the cost is further reduced, the transmission efficiency is improved, and the supercharging effect of the supercharging device 100 is further improved.

As shown in fig. 3, 4 and 5, according to some embodiments of the present utility model, the connection structure includes a connection protrusion 41 and a mating protrusion 42, between two adjacent impellers 30, one impeller 30 is provided with the connection protrusion 41, the other impeller 30 is provided with the mating protrusion 42, and the connection protrusion 41 and the mating protrusion 42 are fixedly connected, where the fixing manner may be a plugging connection, a clamping connection or a fastening connection, so as to achieve connection of the two impellers 30, and the plurality of impellers 30 may rotate around the central axis of the fixed shaft 20, where the connection protrusion 41 may be fixedly connected with one impeller 30, and the mating protrusion 42 may be fixedly connected with the other impeller 30, so that one of the plurality of impellers 30 may rotate, and further, the adjacent impellers 30 may be driven to rotate together, thereby achieving linkage of the two adjacent impellers 30, so that the rotor component 60 only needs to connect one impeller 30, so as to enable synchronous rotation of the other impellers 30, simplifying the transmission structure, and improving the transmission efficiency.

It can be appreciated that, since the connection structure is located between two adjacent impellers 30, the connection structure is respectively abutted against the two adjacent impellers, so that the plurality of impellers 30 are fixed on the fixed shaft 20, the plurality of impellers 30 are prevented from generating axial displacement, and the rotation stability of the impellers 30 is improved.

It should be added that, in two adjacent impellers 30, the connection convex part 41 can be integrally formed with one impeller 30, the matching convex part 42 can be integrally formed with the other impeller 30, so that the processing is facilitated, the structure is further simplified, the structural strength between the impeller 30 and the connection convex part 41 and between the impeller 30 and the matching convex part 42 can be improved, the impeller 30 and the connection structure can bear higher rotating speed, the supercharging effect of the supercharging device 100 is improved, the supercharging device 100 is favorable for adapting to various working conditions, and the use experience of a user is improved.

In some examples, the connection structure may be a coupling disposed between two adjacent impellers 30 to fixedly connect the two adjacent impellers 30, so as to prevent the linked impellers 30 from bearing excessive load while ensuring that the two adjacent impellers 30 rotate together, thereby playing a role of overload protection.

As shown in fig. 3, 4 and 5, in some examples, the connection protrusion 41 includes a plurality of connection bosses 412, the plurality of connection bosses 412 being spaced apart along the circumferential direction of the impeller 30, and a connection groove 411 being defined between two adjacent connection bosses 412; the mating protrusion 42 includes a plurality of mating bosses 422, the plurality of mating bosses 422 being arranged at intervals along the circumferential direction of the impeller 30, and a mating groove 421 being defined between two adjacent mating bosses 422; wherein, the connection boss 412 can be inserted into the matching groove 421, and the matching boss 422 can be inserted into the connection groove 411, so that in two adjacent impellers 30, the connection boss 412 and the matching boss 422 between the two impellers 30 are matched with each other, when one impeller 30 rotates, the connection boss 41, the matching boss 42 and the other impeller 30 synchronously rotate, thereby realizing the purpose of transmitting the rotation moment of one impeller 30 to the other impeller 30, further realizing the synchronous rotation of two adjacent impellers 30, simplifying the transmission structure and improving the transmission efficiency.

Of course, the connection convex portion 41 may also include a plurality of fastening structures, the matching convex portion 42 may also include a plurality of fastening structures, and through fastening the fastening to the fastening groove, the two adjacent impellers 30 may be fixedly connected, so that the two adjacent impellers 30 rotate synchronously, which is convenient for operation and maintenance, and reduces cost.

In some examples, the connection protrusion 41 and the mating protrusion 42 respectively form a ring shape, which can improve the structural strength of the connection structure, so that when the plurality of impellers 30 rotate, the connection structure is uniformly stressed, and further the connection structure can bear larger shearing force, which is beneficial to the stable torque of the connection structure and can improve the rotation effect.

As shown in fig. 5, according to some embodiments of the present utility model, the rotor member 60 may be connected to one impeller 30 through a plurality of connection ribs 50, the plurality of connection ribs 50 are spaced along the circumference of the impeller 30, and by uniformly arranging the plurality of connection ribs 50 around the periphery of the impeller 30, the plurality of connection ribs 50 may be uniformly stressed, so that the connection ribs 50 may bear a larger shearing force, which is beneficial to the connection ribs 50 to stably transmit torque, the rotation effect may be improved, and a gap is left between two adjacent connection ribs 50, which may reduce the weight of the apparatus, reduce the energy consumption, and further reduce the cost.

It can be appreciated that the stator component drives the rotor component 60 to rotate so as to drive the plurality of connecting ribs 50 and the impeller 30 connected with the plurality of connecting ribs 50 to rotate, and then the impeller 30 can drive the connecting structure adjacent to the impeller 30 to rotate so as to enable the plurality of impellers 30 to rotate together, so that linkage between the rotor component 60 and the plurality of impellers 30 can be realized, intermediate component transmission is not required, the structure can be simplified, the cost is reduced, the transmission efficiency is improved, and the supercharging effect of the supercharging device 100 is further improved.

As shown in fig. 3, the rotor component 60 may be connected to the impeller 30 close to the rotor component 60 and drives the impeller 30 to rotate, so as to drive the impeller 30 far away from the rotor component 60 to rotate.

According to some embodiments of the present utility model, the rotor component 60 may be integrally formed with at least a portion of the impeller 30, so as to facilitate processing, further simplify components, and improve structural strength at a connection between the rotor component 60 and the impeller 30, so that the impeller 30 can bear a higher rotational speed, further improve a supercharging effect of the supercharging device 100, facilitate adapting the supercharging device 100 to various working conditions, and improve a user experience, where the rotor component 60 may be integrally formed with at least a portion of the impeller 30 near the rotor component 60, facilitate loading and unloading, prevent activities of the plurality of impellers 30 from interfering, and facilitate later maintenance.

It will be appreciated that the rotor member 60 and the impeller 30 may be integrally formed by first forming a bracket structure, i.e. a plurality of connection ribs 50, on the rear side of the impeller 30 by using a mold opening process, then mounting a magnet structure, i.e. injection molding the rotor member 60, on the end of the plurality of connection ribs 50 away from the impeller 30, and finally rounding the outer ring of the rotor member 60.

As shown in fig. 2 and 4, in some examples, the impeller 30 includes the vane 32, the first cover plate 31 and the second cover plate 33, the vane 32 is disposed between the first cover plate 31 and the second cover plate 33, the middle of the first cover plate 31 has an opening, by providing the opening, the first cover plate 31 is mounted to the fixed shaft 20 through the opening, and the first cover plate 31 and the second cover plate 33 may be matched with each other, so that the vane 32 is sandwiched between the two cover plates to form the impeller 30, thereby mounting the entire impeller 30 on the fixed shaft 20, the second cover plate 33 may be fixedly connected with the rotor member 60, i.e., one end of the connecting rib 50 near the impeller 30 is connected with the second cover plate 33, one end of the connecting rib 50 far from the impeller 30 is connected with the rotor member 60, and in the same impeller 30, the first cover plate 31 is far from the rotor member 60 than the second cover plate 33 is connected with the second cover plate 33 through the connecting rib 50, thereby the size of the connecting rib 50 can be properly reduced, the structural strength of the connecting rib 50 is improved, and the manufacturing cost is reduced.

As shown in fig. 3, according to some embodiments of the present utility model, the supercharging device 100 further includes: the two limiting gaskets 70 are respectively arranged at two ends of the fixed shaft 20, one limiting gasket 70 is abutted with the impeller 30, the other limiting gasket 70 is abutted with the rotor component 60, and the two limiting gaskets 70 are mutually matched, so that a plurality of impellers 30 are fixed on the fixed shaft 20, the plurality of impellers 30 are prevented from generating axial displacement, and the rotation stability of the impellers 30 is improved.

In some examples, the limiting gasket 70 may be a ceramic gasket, when the plurality of impellers 30 rotate, the plurality of impellers 30 rub against the limiting gasket 70 located on the front side and the rear side of the impellers 30, and since the ceramic limiting gasket 70 has self-lubricity, the friction resistance can be reduced, so that the rotation of the impellers 30 is smoother, and the pressurizing effect of the impellers 30 on the liquid is improved.

According to some embodiments of the present utility model, the fixed shaft 20 is an optical axis, and the diameter of the whole shaft is uniform, so that the impeller 30 can be effectively supported and bear centrifugal force caused by rotation of the impeller 30, the rear end and the front end of the fixed shaft 20 are respectively fixed on the housing 10, stability of the fixed shaft 20 can be ensured, the fixed shaft 20 is stationary when the impeller 30 rotates, the fixed shaft 20 mainly plays a role in supporting and stabilizing the impeller 30, wherein the fixed shaft 20 can be a ceramic piece, and the ceramic piece has self-lubricating property, so that friction resistance can be reduced, rotation of the impeller 30 is smoother, and pressurizing effect of the impeller 30 on liquid is improved.

As shown in fig. 1, according to some embodiments of the present utility model, a housing 10 includes a first casing 11 and a second casing 12, the first casing 11 is located at the front of the second casing 12, and the first casing 11 and the second casing 12 may be fixedly connected by a fastener, which may be a screw or a bolt, etc., so that the operation is convenient and the fixing effect is good; the first housing 11 is provided with a water inlet 111, the second housing 12 is provided with a water outlet 121, wherein the front end of the fixed shaft 20 can be fixedly connected with the first housing 11, and the rear end of the fixed shaft 20 can be fixedly connected with the second housing 12, so that the pressure borne by the fixed shaft 20 can be dispersed to the first housing 11 and the second housing 12, the stability of the whole structure is improved, the limit of the size of the housing 10 to the length of the fixed shaft 20 can be reduced, the space is saved, the plurality of impellers 30 are arranged on the fixed shaft 20, and the pressurizing effect of the pressurizing device 100 is improved.

As shown in fig. 6 and 7, in some examples, the supercharging device 100 further includes: the water guide 80 is disposed between two adjacent impellers 30, the water guide 80 can change the flow direction of the liquid, for example, in the pressurizing device 100 along the flow direction of the liquid, i.e., in the front-to-rear direction, the water guide 80 can guide the liquid from the outlet of the front impeller 30 to the inlet of the rear impeller 30 in two adjacent impellers 30, thereby enabling the impellers 30 to cooperate with each other, realizing multiple pressurization of the liquid, and improving the pressurizing effect of the pressurizing device 100.

As shown in fig. 6, in some examples, the middle portion of the water guide 80 has a through hole 801, the water guide 80 may be mounted to the fixed shaft 20 through the through hole 801, and the connection structure may pass through the through hole 801 to avoid interference between the connection of the adjacent two impellers 30.

In some examples, the liquid may be water, whereby the booster device 100 may be used in a gas water heater or a water pump.

As shown in fig. 1 to 7, the gas water heater according to the embodiment of the utility model includes a supercharging device 100, by arranging a plurality of impellers 30 in the supercharging device 100, water entering the supercharging device 100 can achieve a supercharging effect through the plurality of impellers 30, through connection between a rotor component 60 and one impeller 30, a stator component drives the rotor component 60 to rotate and can directly drive the impeller 30 to rotate, and two adjacent impellers 30 are connected through a connecting structure, so that the impellers 30 can drive the rest impellers 30 to rotate, namely linkage between the rotor component 60 and the plurality of impellers 30 is achieved, the structure of the supercharging device 100 is simplified, the working stability of the supercharging device 100 is improved, miniaturization of the gas water heater is facilitated, water pressure in the gas water heater is stable, the use effect of the gas water heater is ensured, and the use experience of a user is improved.

As shown in fig. 1 and 2, according to some embodiments of the present utility model, an axis of the impeller 30 is perpendicular to a center line of the water inlet 111, for example, the center line of the water inlet 111 extends in an up-down direction, an axis of the impeller 30 extends in a front-rear direction, the plurality of impellers 30 are matched with each other, water can pass through the impeller 30 in the front-rear direction, a load of the impeller 30 can be reduced, a pressurizing effect of the impeller 30 on the water can be improved, a service life of the impeller 30 can be further improved, and by the arrangement, the pressurizing device 100 can be conveniently installed in a gas water heater to be used while ensuring the pressurizing effect, the water inlet 111 is conveniently matched with an inlet of the gas water heater, and the pressurizing device 100 is compact in structure, so that the pressurizing device 100 is conveniently matched with the gas water heater of various sizes.

As shown in fig. 1 and 2, according to some embodiments of the present utility model, the water inlet 111 is located at the lower side of the water outlet 121, and the center line of the water inlet 111 is parallel to the center line of the water outlet 121, for example, the center line of the water inlet 111 and the center line of the water outlet 121 respectively extend along the up-down direction, so that the directions of water entering and exiting the supercharging device 100 are the same, specifically, the water inlet 111 is located at the lower sides of the impellers 30, and the water outlet 121 is located at the upper sides of the impellers 30, so as to facilitate the installation and the position layout of the supercharging device 100, so as to fully utilize the space in the gas water heater, reduce the space occupied by the supercharging device 100, and meet the design requirement of miniaturization of the gas water heater on the basis of realizing supercharging.

As shown in fig. 1, according to some embodiments of the present utility model, the first housing 11 has a water inflow path between the water inlet 111 and the impeller 30, and an overflow area of at least a portion of the water inflow path is gradually increased in a front-to-rear direction, whereby a flow area and flow efficiency can be ensured, and an inflow amount at the impeller inlet 301 is increased.

As shown in fig. 1 and 2, in some examples, the second housing 12 has the water outlet flow channel 102 between the impeller 30 and the water outlet 121, and the flow passage efficiency can be ensured by gradually increasing the flow area of at least a portion of the water outlet flow channel 102 along the direction from bottom to top, and the flow efficiency of water can be improved by matching the water outlet flow channel 102 with the water inlet flow channel, so that the supercharging device 100 has enough water flow capacity to improve the supercharging effect of the supercharging device 100.

As shown in fig. 3 and 4, according to some embodiments of the present utility model, the impeller 30 has an impeller inlet 301 and an impeller outlet 302, the impeller inlet 301 is located at the middle of the impeller 30, so that water can directly enter the impeller inlet 301 after passing through the water inlet 111, the impeller outlet 302 is located at the periphery of the impeller 30, when the impeller 30 rotates, the water moves to the periphery of the impeller 30 under the action of centrifugal force under the driving of the blades 32, and the blades 32 have a certain radian, and can guide the water to flow out from the impeller outlet 302 at a high speed, thereby realizing the pressurizing function of the impeller 30 on the water.

As shown in fig. 6 and 7, in some examples, the water guide 80 has a water guide inlet 802 and a water guide outlet 803, in the radial direction of the impeller 30, the water guide inlet 802 is located at the outer side of the impeller outlet 302, so that water pressurized by the impeller 30 located at the front side of the water guide 80 can be directly introduced into the water guide inlet 802, the water guide outlet 803 is located at the inner side of the water guide inlet 802, so that the water guide 80 can lead the water pressurized by the impeller 30 from the outer periphery of the water guide 80 to the middle part of the water guide 80, and guide the water to flow out from the water guide outlet 803, the water guide 80 can also stably pressurize the water flow, the water guide outlet 803 corresponds to the position of the impeller inlet 301 of the impeller 30 located at the rear side of the water guide 80, so that the water flowing out of the water guide outlet 803 can be directly introduced into the impeller inlet 301 of the next impeller 30, the impeller 30 can be pressurized again, and the pressurizing effect of the pressurizing device 100 can be improved.

Other constructions and operations of gas water heaters according to embodiments of the present utility model are known to those of ordinary skill in the art and will not be described in detail herein. In the description of the utility model, a "first feature" or "second feature" may include one or more of such features. The vertical direction, the horizontal direction, and the front-rear direction are defined by the vertical direction, the horizontal direction, and the front-rear direction in the drawing.

In the description of the present utility model, unless explicitly stated and limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, or may include both the first and second features not being in direct contact but being in contact by another feature therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. A supercharging device, characterized by comprising:

the shell is provided with a water inlet and a water outlet, and is provided with a fixed shaft;

the impellers are sleeved on the fixed shaft and positioned between the water inlet and the water outlet, and two adjacent impellers are matched through a connecting structure;

a rotor member disposed on the stationary shaft and connected to one of the impellers;

and the stator component is matched with the rotor component to drive the rotor component to rotate.

2. The supercharging device according to claim 1, wherein the connection structure includes a connection protrusion and a mating protrusion, the connection protrusion and the mating protrusion are provided on adjacent two of the impellers, respectively, and the connection protrusion and the mating protrusion are fixedly connected.

3. The supercharging device of claim 2 wherein the coupling boss comprises a plurality of coupling bosses spaced apart along the circumference of the impeller with a coupling groove defined therebetween, the mating boss comprises a plurality of mating bosses spaced apart along the circumference of the impeller with a mating groove defined therebetween,

wherein the connection boss is adapted to be inserted into the mating recess and the mating boss is adapted to be inserted into the connection recess.

4. Supercharging device according to claim 2, characterized in that the connecting projection and the mating projection each form a ring shape.

5. The supercharging device of claim 1 wherein the rotor component is connected to one of the impellers by a plurality of connecting ribs spaced apart circumferentially of the impeller.

6. The supercharging device of claim 1 wherein the rotor component is integrally formed with at least a portion of the impeller.

7. The supercharging device of claim 6 wherein the impeller comprises a vane, a first cover plate and a second cover plate, the vane disposed between the first cover plate and the second cover plate, the first cover plate having an opening in a middle thereof, the second cover plate being fixedly connected to the rotor member.

8. The supercharging device of claim 1, further comprising: the two limiting gaskets are respectively arranged at two ends of the fixed shaft, one limiting gasket is abutted with the impeller, and the other limiting gasket is abutted with the rotor component.

9. The supercharging device of claim 8 wherein the spacing pad is a ceramic pad.

10. The supercharging device of claim 1 wherein the stationary shaft is a ceramic piece.

11. The supercharging device of claim 1 wherein the housing comprises a first housing provided with the water inlet and a second housing provided with the water outlet, wherein the fixed shaft is located at both ends of the first housing and the second housing, respectively.

12. The supercharging device of any one of claims 1-11, further comprising: and a water guide member provided between the adjacent two impellers, the water guide member being configured to guide water at an outlet of the upstream impeller to an inlet of the downstream impeller in a flow direction of the water.

13. A gas water heater comprising a supercharging arrangement according to any one of claims 1 to 12.