CN2502801Y

CN2502801Y - Water spray device

Info

Publication number: CN2502801Y
Application number: CN 01242367
Authority: CN
Inventors: 吴少坡; 刑宏本
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-06-25
Filing date: 2001-06-25
Publication date: 2002-07-31
Anticipated expiration: 2011-06-25

Abstract

A waterworks is provided. A reluctance-type brushless DC motor and an impeller are positioned in the same chamber; a stator of the motor is fixed on a shell and the coil of the stator and all the circuit components are covered closely by water-proof materials; a permanent magnet rotor of the motor is fixedly connected with the impeller. The waterworks can conveniently regulate and control the rotary speed of the motor according to the change of the signal voltage to cause the patterns of the fountain water with abundant changes. The waterworks has the advantages of simple structure, small volume, good water-proof performance, long service life, material saving, low cost, small friction when rotating, low noise and high dynamic efficiency, which is especially suitable for building fountains in the rooms.

Description

A kind of water injector

The utility model belongs to a kind of water injector, particularly relates to a kind of water injector that can be used to make spray samples such as Indoor fountain.

The at present commercially available water injector that is used to make spray sample such as Indoor fountain mostly adopts alternating current generator to drive, because ac motor structure complexity, and rotating speed is difficult to Fast transforms, makes the water-column of ejection single, therefore is difficult to according to the real-time conversion spray of music background sample.The existing water injector that adopts direct current generator for can subduction in water, must adopt special box structure that whole direct current generator sealed, only retain a perforate and allow machine shaft pass, and at this tapping water-tight is set and constructs.There is following shortcoming in the existing water injector of direct current generator that adopts: the first, and the waterproof construction complexity is to the required precision height of production and processing and assembling process; The second, motor is in and is difficult for heat radiation in the seal box; The 3rd, there are error inevitably in machine shaft, seal box perforate and collision mat three's position and geomery, increase the frictional resistance of motor rotation, the expanded motor load, and mechanical wear can make waterproof effect reduce gradually, until making the seal box infiltration, influences the service life of motor; The 4th, the noise of parts such as machine shaft and commutator also can reduce the appreciation effect of Indoor fountain during the water injector running.

The purpose of this utility model be to provide a kind of simple in structure, water resistance good and change the water injector of water-jet velocity easily.

Its purpose can realize by following scheme: this water injector comprises direct current generator, and the housing that surrounds the formation chamber, impeller is arranged in chamber, have the inlet opening near the impeller center position on housing, the other end also is provided with apopore on housing, it is characterized in that, described direct current generator is the Mageneto-sensitive type brshless DC motor, and this motor also is in the chamber, and the stator of motor is fixed on the housing, and the coil of stator and all components are closely wrapped up by waterproof material; The PM rotor of motor is fixedlyed connected with impeller.

Realization above-mentioned purpose scheme preferably is: described waterproof material is filled in the coil of stator and the space around all components, and coil, component and waterproof material be three are combined into one, and forms block.Like this, coil and all component skins are enclosed with enough thick waterproof layer, guarantee waterproof effect.

The utility model is described in further detail below in conjunction with accompanying drawing.

Fig. 1 is a kind of concrete enforcement structural representation of the utility model.

Fig. 2 is Figure 1A-A line generalized section.

Fig. 3 is Figure 1B-B line generalized section.

Fig. 1, Fig. 2, shown in Figure 3, the housing 1 of this water injector surrounds and forms cylindric chamber, impeller 5 and motor all place this chamber, this motor is the Mageneto-sensitive type brshless DC motor, its power is 3W, and the epoxy resin 33 that solidifies abrim around the coil 31 of motor stator and all components 32 three are combined into one coil 31, component and epoxy resin 33, formed stator modules 3, stator modules 3 is fixed on the housing 1 by plastic stent 2; Rotor DC machine 4 is a round ring magnet; PM rotor 4 is fixed together with overcoat 43, be fixed with impeller 5 in overcoat 43 bottoms, impeller 5 is fixedlyed connected with PM rotor, and both have common central rotating shaft 41, and central rotating shaft 41 is bearing on plastic stent 2 and the stator modules 3 by bearing 42; Position near impeller 5 centers on housing 1 has inlet opening 6, has water hole 8 on plastic stent 2, has apopore 7 in housing 1 central upper portion position, and apopore is positioned on the impeller middle spindle line, and apopore 7 diameters are 1mm; Near apopore 7 places lampion 9 is housed in chamber, light transmissive material is adopted on housing top, forms diffuser 11, can increase the appreciation effect of fountain like this; Also coated with waterproof material on lampion 9 electrodes.

When utilizing this miniature water injector to make fountain, can place it in the water, make water surface elevation can flood motor, as shown in Figure 4; Behind electrical power, rotor 4 impeller 5 rotations at a high speed make the water that enters chamber from the inlet opening 6 of bottom centre owing to be subjected to centrifugal action, equably to all directions diffusion all around, be pooled to the central upper portion position along the path shown in Fig. 1 hollow arrow, at last from apopore 7 ejections.Because apopore and inlet opening all are positioned on the impeller middle spindle line, make that above-mentioned flow path distributes very evenly, symmetry on all directions, motor load on all directions is even, helps reducing friction and noise, improves dynamic efficiency.

The inwall of above-mentioned housing 1 can also engrave spiral lamination, and the current rotation that so more helps in the chamber is risen.

The utlity model has following advantage:

1, owing to adopt direct current generator, can regulate and control electricity according to the variation of signal voltage easily The rotating speed of machine is full of variety the fountain water style.

2, being fit to subduction works in water. Because its motor does not use brush and commutator, Make motor stator can use the waterproof material sealed envelope, and rotor is permanent magnet, does not deposit Needing the problem of waterproof, thereby whole water spray device waterproof construction is simple, water resistance very Good, long service life.

3, because motor needn't adopt the waterproof construction of machinery sealing, and motor load is even, It is little to rub when making whole water spray device running, and noise is low, the dynamic efficiency height.

4, because the motor of traditional water injector and impeller must be in two isolated chambers respectively and by the rotating shaft transmitting rotary power, and the utility model motor and impeller all are in the same chamber, and the rotary power of rotor can be directly passed to impeller, therefore has the advantage that volume is small and exquisite, simple in structure, material usage is few, with low cost.

Owing to the utlity model has above-mentioned advantage, be particularly suitable for being applied to spray samples such as indoor manufacturing fountain.

Claims

1, a kind of water injector, comprise direct current generator, and the housing that surrounds the formation chamber, impeller is arranged in chamber, have the inlet opening near the impeller center position on housing, the other end also is provided with apopore on housing, it is characterized in that: described direct current generator is the Mageneto-sensitive type brshless DC motor, and this motor also is in the chamber, and the stator of motor is fixed on the housing, and the coil of stator and all components are closely wrapped up by waterproof material; The PM rotor of motor is fixedlyed connected with impeller.

2, water injector according to claim 1 is characterized in that: described waterproof material is filled in coil and all component surrounding spaces of stator, and coil, component and waterproof material be three are combined into one, and forms block.

3, water injector according to claim 1 and 2 is characterized in that: described apopore is positioned on the impeller middle spindle line.

4, water injector according to claim 1 and 2 is characterized in that: near the apopore place lampion is housed in chamber.

5, water injector according to claim 3 is characterized in that: near the apopore place lampion is housed in chamber.