CN101586868A - Liquid discharging device - Google Patents
Liquid discharging device Download PDFInfo
- Publication number
- CN101586868A CN101586868A CNA2008100977162A CN200810097716A CN101586868A CN 101586868 A CN101586868 A CN 101586868A CN A2008100977162 A CNA2008100977162 A CN A2008100977162A CN 200810097716 A CN200810097716 A CN 200810097716A CN 101586868 A CN101586868 A CN 101586868A
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- Prior art keywords
- discharge device
- rotor
- liquid discharge
- impeller
- pump housing
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Abstract
The invention discloses a liquid discharging device comprising a pump body with a liquid inlet and a liquid outlet, an impeller and a drive device, wherein the drive device comprises a stator and a rotor. The liquid discharging device is characterized by also comprising a separating cover for separating the rotor and the stator, wherein the separating cover is in sealing connection with the pump body; the inner cavity of the separating cover and the inner cavity of the pump body form a sealed pump cavity; the rotor and the impeller are installed inside the pump cavity, and the stator is installed outside the pump cavity, therefore, when the liquid discharging device works, the impeller works in a sealed environment, thereby avoiding the problem of pressure loss caused by a clearance between a rotating shaft and a shaft hole of the impeller in the prior art and improving the liquid discharging efficiency of the liquid discharging device.
Description
Technical field
The present invention relates to a kind of liquid discharge device, especially relate to a kind of liquid discharge device that is used for refrigeration system, as a kind of draining pump of idle call.
Background technology
In the refrigeration system course of work, during as air conditioner work running (refrigeration, dehumidifying), because heat exchanger is to the cooling effect of surrounding air, cause on the surface of heat exchanger and generate a large amount of condensed waters, when condensed water gathers certain degree, can drop onto in the condensed water drip tray of heat exchanger below, therefore liquid discharge device need be installed in drip tray, be discharged to the condensed water in the drip tray outdoor.
With reference to figure 1, Fig. 1 shows the structural representation of liquid discharge device of the prior art.
As shown in Figure 1, this liquid discharge device comprises the pump housing, is installed in the impeller 2a in the pump housing and is arranged at the drive motors 4a of pump housing outside.
The pump housing comprises upper pump casing 3a and lower pump body 1a, upper pump casing 3a and lower pump body 1a are tightly connected, be provided with sealed picture 10a in its junction, pump chamber 23a of the inner formation of pump housing 3a and lower pump body 1a, the lower end of lower pump body 1a has inlet 11a, this inlet 11a is communicated with pump chamber 23a, has liquid outlet 12a on the sidewall of lower pump body 1a, and this liquid outlet 12a is communicated with pump chamber 23a; Impeller 2a is installed in the pump chamber 23a, and impeller 2a top has the rotating shaft 7a of fixedlying connected with impeller 2a, and the axis hole 6a that rotating shaft 7a passes upper pump casing 3a top is fixedlyed connected with the output shaft of drive motors 4a.
When the output shaft of drive motors 4a rotated, the rotating shaft 7a impeller 2a rotation by impeller 2a realized drainage works.
Because this rotating shaft 7a rotatablely moves during liquid discharge device work, thereby in this liquid discharge device, has certain clearance between rotating shaft 7a and the axis hole 6a.As seen, impeller 2a works in the pump chamber 23a of an exploitation formula, cause this liquid discharge device when work, the pressure loss in the pump chamber 23a is big, according to the operation principle of liquid discharge device as can be known, the gap between rotating shaft 7a and the axis hole 6a can reduce the drainage efficiency of this liquid discharge device, and considers that the liquid in the pump chamber can overflow, on product structure, drainage system and pressure equaliser must be set, cause the design of part complexity of draining pump
And, when liquid discharge device is worked, need the pressure in the control pump chamber 23a, from the gap of rotating shaft 7a and axis hole 6a in order to avoid the water among the pump chamber 23a flows out.And when liquid discharge device quit work, the water in the outlet pipe can be back in the pump chamber 23a, also can cause the gap ejection of the interior water of pump chamber 23a from rotating shaft 7a and axis hole 6a this moment, was splashed on the drive motors 4a, caused very big potential safety hazard.
In addition, the drive motors 4a and the pump housing are split-type structural, cause this liquid discharge device volume big, take very big installing space.
Summary of the invention
At the problems referred to above, the technical problem that the present invention solves is, a kind of liquid discharge device is provided, this liquid discharge device is the drainage efficiency height in use, displacement is big and overall volume is less, pump chamber is an enclosed construction, can not cause the potential safety hazard of drive motors in the drainage procedure owing to splashing.
Liquid discharge device provided by the invention, comprise the pump housing, impeller and the drive unit that have inlet and liquid outlet, described drive unit comprises stator and rotor, it is characterized in that, this liquid discharge device also comprises one with described rotor and the separated cage of described stator, the described cage and the described pump housing are tightly connected, the inner chamber of described cage and the inner chamber of the described pump housing form airtight pump chamber, described rotor and impeller are installed in the inside of described pump chamber, and described stator is installed in the outside of described pump chamber.
Preferably, described rotor comprises rotor magnetic steel and rotary body; Described rotor magnetic steel is wrapped up by described rotary body.
Preferably, the rotary body of described rotor is fixedlyed connected with described impeller, and described rotor can drive described wheel rotation.
Preferably, described rotor and described impeller are structure as a whole.
Preferably, the bottom of the described pump housing and the top of described cage are respectively equipped with mounting groove, described rotor and impeller have axial through hole, in this through hole, fixed axis is installed, this fixed axis one end places in the mounting groove of described pump housing bottom, and its other end places in the mounting groove at described cage top.
Preferably, at least one bearing is installed on the described fixed axis, this bearing cooperates with described fixed axis.
Preferably, described bearing is a water lubriucated bearing.
Preferably, in the junction of the described cage and the described pump housing sealing ring is installed.
Preferably, the position near the center on the inwall at the top of described cage has a boss, offers mounting groove on this boss.
Preferably, the position near the center on the inwall of the bottom of the described pump housing has a boss, offers mounting groove on this boss, and the bottom of the described pump housing has the inlet that constitutes with respect to ring-shaped distributed several openings of described mounting groove.
Compared with prior art, liquid discharge device provided by the invention has cage, this cage is kept apart the stator and the rotor of described drive unit, the described cage and the described pump housing are tightly connected and have formed an airtight pump chamber, the rotor of described drive unit and described impeller are installed in this pump chamber, the stator of described drive unit is installed in outside this pump chamber, thereby, when liquid discharge device is worked, described impeller is operated in the closed environment, and then avoided the pressure loss problem that causes because of the gap between impeller shaft and the axis hole in the prior art, thereby improved the drainage efficiency of this liquid discharge device, and pump chamber is a hermetically-sealed construction, liquid that can not in the chamber overflows, and need not to be provided with drainage system and pressure equaliser, and design of part is simple, can not produce liquid splash to drive motors yet, cause very big potential safety hazard.
In addition, described impeller and described rotor are structure as a whole, thereby have obviously reduced the volume of this liquid discharge device, thereby are more convenient for installing and using of liquid discharge device.
Description of drawings
Fig. 1 is the structural representation of liquid discharge device of the prior art;
Fig. 2 is the structural representation of first kind of specific embodiment of liquid discharge device of the present invention;
Fig. 3 is the cutaway view along A-A line among Fig. 2;
Fig. 4 is the structure vertical view of a kind of specific embodiment of Fig. 2 middle pump body;
Fig. 5 is the stereogram of Fig. 4 middle pump body;
Fig. 6 is the structural representation of a kind of specific embodiment of cage of the present invention;
Fig. 7 is the structural representation of second kind of specific embodiment of liquid discharge device of the present invention;
Fig. 8 is the structural representation of the third specific embodiment of liquid discharge device of the present invention;
Fig. 9 is the rotor structure schematic diagram of the 4th kind of specific embodiment of liquid discharge device of the present invention.
The specific embodiment
In order to make those skilled in the art better understand technical scheme of the present invention, the present invention is described in further detail below in conjunction with the drawings and specific embodiments.
With reference to figure 2, Fig. 2 is the structural representation of first kind of specific embodiment of liquid discharge device of the present invention; Fig. 3 is the cutaway view along A-A line among Fig. 2.
Shown in Fig. 2 and 3, the liquid discharge device that present embodiment provides comprises the pump housing 1, impeller 2, drive unit 30 and cage 5.The bottom of the pump housing 1 has inlet 11, has liquid outlet 12 (shown in Figure 2) on its sidewall, and the pump housing 1 has open lumen 13.Drive unit 30 comprises housing 3 and is installed in the stator 4 in the housing 3 and is arranged on rotor 6 in the cage 5 that this liquid discharge device also comprises fixed axis 7 in the axially extending bore that is installed in impeller 2 and rotor 6 and bearing 8 and the pad 9 that is installed in these fixed axis 7 two ends.
The opening end edge of the outer edge of cage 5 and the pump housing 1 is tightly connected, in the present embodiment, junction at the cage 5 and the pump housing 1 is equipped with sealing ring 10, thereby guarantees the sealing of cage 5 and the pump housing 1 junction, also can adopt other hermetically-sealed construction certainly.As seen, the inner chamber 51 of cage 5 has formed an airtight pump chamber 23 jointly with the inner chamber 13 of the pump housing 1, and impeller 2 and rotor 6 are installed in this pump chamber 23.Fixed axis 7 is installed in the axially extending bore of impeller 2 and rotor 6, and the upper end of fixed axis 7 is installed in the connecting portion at the top of cage 5, and the lower end of fixed axis 7 is installed in the connecting portion at liquid outlet 11 places of the pump housing 1 bottom.
When this liquid discharge device is connected power supply, stator 4 produces rotating excitation field, rotor 6 rotates around fixed axis 7 under the effect of rotating excitation field, and then impeller 2 rotations, the impeller 2 of rotation is discharged the air in the pump chamber 23, thereby under the atmospheric effect in the external world, water enters in the pump chamber 23 from inlet 11, and then, finish draining by liquid outlet 12 discharges.
In the above-described embodiments, stator 4 act as and is used for producing rotating excitation field, and stator 4 comprises stator core 41, stator insulation cover 42 and stator winding 43.The silicon steel sheet closed assembly that stator core 41 scribbles insulated paint by several surfaces compresses to be made, and stator insulation cover 42 is sleeved in the fluting of stator core 41, and stator winding 43 adopts enamel-covered wires to make, and is wrapped in the outside of stator insulation cover 42.
The effect of rotor 6 is to obtain rotating torque under the rotating excitation field effect, and rotor 6 comprises rotor magnetic steel 61 and rotary body 62.In the present embodiment, rotor magnetic steel 61 is the ring-shaped sleeve structure, rotary body 62 is a cylindrical structure, rotor magnetic steel 61 is wrapped in the inside of rotary body 62, rotary body 62 is installed in the open lumen 51 of cage 5, the inwall of the open lumen 51 of the outer wall of rotary body 62 and cage 5 leaves certain interval, guarantees that rotary body 62 can rotate in this open lumen 51.The rotating excitation field that rotor 6 cutting stators 4 produce produces induced electromotive force and electric current, and at rotating excitation field effect lower stress rotor 6 is rotated.
The outside at the close bearing 8 in the two ends of fixed axis 7 is equipped with pad 9, and this pad 9 cooperates with fixed axis 8.
In addition, the position near top in housing 3 is equipped with control driver 40, and this control driver 40 adopts no sensor actuation techniques, and this control driver 40 links to each other with stator winding 63, can carry out speed Control to liquid discharge device.
With reference to figure 4 is the structure vertical view of a kind of specific embodiment of Fig. 2 middle pump body; Fig. 5 is the stereogram of Fig. 4 middle pump body.
As shown in Figure 4 and Figure 5, the pump housing 1 that present embodiment provides is bowl structure, also can be other similar hood-shaped structures certainly.The pump housing 1 has inner chamber 13, the bottom of the pump housing 1 has lug boss 14 (shown in Figure 5), several openings 17 and the fixed axis support 16 that on this lug boss 14, have the inner chamber 13 that leads to the pump housing 1, in the present embodiment, this fixed axis support 16 is three support arms, is connected by the through-hole wall of support arm with the pump housing 1 bottom, and fixed axis support 16 middle parts have a boss, the mounting groove 18 that offers on this boss, this mounting groove 18 are used to install and fix the bottom of axle 7.Certainly also can increase wall, in wall, directly offer mounting groove again in the bottom of the pump housing 1.
In the present embodiment, three openings 17 of arranged around at the mounting groove 18 at fixed axis support 16 middle parts, this opening 17 constitutes the inlet 11 of the pump housings 1, has outlet pipe 15 on the sidewall of the pump housing 1, has the liquid outlet 12 that is communicated with the pump housing 1 inner chamber at the axial direction of outlet pipe 15.
Fig. 6 is the structural representation of a kind of specific embodiment of cage of the present invention.
As shown in Figure 6, the cage 5 that present embodiment provides is cap shape structure, certainly also can be the structure that other similarly have open lumen, has an open lumen 51, position near the center on the inwall at the top of cage 5 has a boss 52, offers mounting groove 53 on this boss 52, and this mounting groove 53 is used to install and fix the upper end of axle 7, certainly also can increase wall, in wall, directly offer mounting groove again at the top of cage 5.
Simultaneously with reference to Fig. 3, when cage 5 with housing 3, when the pump housing 1 is installed, the end face of the openend of the upper wall of the outer of cage 5 and housing 3 is fitted, at this moment, the applying of the inwall of the outer wall of first annular projection 54 and housing 3 openends.The end face of the openend of the lower wall of the outer of cage 5 and the pump housing 1 is fitted, and the inwall of the openend of the outer wall of second annular projection 55 and the pump housing 1 leaves annular gap, and then sealing ring 10 can be installed, thereby guarantee that well the cage 5 and the pump housing 1 can form the pump chamber 23 of a good seal in this annular gap.
The liquid discharge device that provides in the embodiment of the invention, because cage 5 is tightly connected with the pump housing 1, cage 5 has formed an airtight pump chamber 23 with the pump housing 1, impeller 2 is installed in this pump chamber 23, thereby, when liquid discharge device is worked, impeller 2 is operated in the closed environment, and then has reduced the pressure loss in the pump chamber 23, thereby has improved the drainage efficiency of this liquid discharge device, and, because pump chamber 23 is an enclosed construction, liquid that can not overflows, and need not to be provided with drainage system and pressure equaliser, design of part is simple, also can not cause the potential safety hazard of drive motors 30 in the drainage procedure owing to splashing.
In addition, impeller 2 has been made integrative-structure with rotor 6, thereby has obviously reduced the volume of liquid discharge device, is more convenient for installing and using.
With reference to figure 7, Fig. 7 is the structural representation of second kind of specific embodiment of liquid discharge device of the present invention.
As shown in Figure 7, be with the difference of first kind of specific embodiment of the present invention, in this example, rotor 6 and impeller 2 are split-type structural, have first groove 621 on the lower surface of the rotary body 62 of rotor 6, this groove 621 can be semi-circular structure, also can be circle or other structures certainly.
The upper surface of impeller 2 has first projection 19, and the size of first groove 621 on this first projection 19 and rotary body 62 lower surfaces is complementary, and then rotor 6 and impeller 2 are fixed together.In addition, also can use glue to paste rotor 6 and impeller 2 fixing.
With reference to figure 8, Fig. 8 is the structural representation of the third specific embodiment of liquid discharge device of the present invention.
As shown in Figure 8, be that with the difference of first kind of specific embodiment of the present invention in this example, rotor 6 and impeller 2 are structure as a whole, the upper end of the rotary body 62 of rotor 6 has second projection 622, and the bottom of impeller 2 has the 3rd projection 24.Second projection 622 of the upper end of rotary body 62 is installed in the mounting groove at cage 5 tops, and the 3rd projection 24 of impeller 2 bottoms is installed in the mounting groove interior (as first embodiment) of the pump housing 1 bottom.Certainly, bearing can also be set in mounting groove, in this not explanation in addition.
With reference to figure 9, Fig. 9 is the rotor structure schematic diagram of the third specific embodiment of liquid discharge device of the present invention.
As shown in Figure 9, the difference with first kind of specific embodiment is that in this example, rotor 6 comprises rotor magnetic steel 61, rotary body 62 and seal 63.Rotor magnetic steel 61 is encapsulated in the seal 63, can adopt the method for injection moulding etc. to realize, rotor magnetic steel 61 and seal 63 constitute an independent annular component, the bottom of seal 63 has the 4th projection 631, the 4th projection 631 is a loop configuration, rotary body 62 is the step cutting pattern structure, on the platform interface of rotary body 62, has second groove 623, this second groove 623 is a loop configuration, the size of the 4th projection 631 and second groove 623 is complementary, and then rotor magnetic steel 61 and the annular construction member that seal 63 forms be installed on the rotary body 62, constitute rotor 6.In addition, can on the step cutting pattern of rotary body 62, offer projection, and offer groove, can realize equally rotor magnetic steel 61 and the annular construction member that seal 63 forms are installed on the rotary body 62 in the bottom of seal 63.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. liquid discharge device, comprise the pump housing, impeller and the drive unit that have inlet and liquid outlet, described drive unit comprises stator and rotor, it is characterized in that, this liquid discharge device also comprises one with described rotor and the separated cage of described stator, the described cage and the described pump housing are tightly connected, the inner chamber of described cage and the inner chamber of the described pump housing form airtight pump chamber, described rotor and impeller are installed in the inside of described pump chamber, and described stator is installed in the outside of described pump chamber.
2. liquid discharge device according to claim 1 is characterized in that described rotor comprises rotor magnetic steel and rotary body; Described rotor magnetic steel is wrapped up by described rotary body.
3. liquid discharge device according to claim 2 is characterized in that, the rotary body of described rotor is fixedlyed connected with described impeller, and described rotor can drive described wheel rotation.
4. liquid discharge device according to claim 3 is characterized in that, described rotor and described impeller are structure as a whole.
5. liquid discharge device according to claim 2, it is characterized in that, the bottom of the described pump housing and the top of described cage are respectively equipped with mounting groove, described rotor and impeller have axial through hole, in this through hole, fixed axis is installed, this fixed axis one end places in the mounting groove of described pump housing bottom, and its other end places in the mounting groove at described cage top.
6. liquid discharge device according to claim 5 is characterized in that, at least one bearing is installed on the described fixed axis, and this bearing cooperates with described fixed axis.
7. liquid discharge device according to claim 6 is characterized in that, described bearing is a water lubriucated bearing.
8. according to each described liquid discharge device of claim 1-7, it is characterized in that, sealing ring is installed in the junction of the described cage and the described pump housing.
9. according to each described liquid discharge device of claim 1-7, it is characterized in that the position near the center on the inwall at the top of described cage has a boss, offers mounting groove on this boss.
10. according to each described liquid discharge device of claim 1-7, it is characterized in that, position near the center on the inwall of the bottom of the described pump housing has a boss, offer mounting groove on this boss, the bottom of the described pump housing has the inlet that constitutes with respect to ring-shaped distributed several openings of described mounting groove.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100977162A CN101586868A (en) | 2008-05-20 | 2008-05-20 | Liquid discharging device |
| JP2009116240A JP5325651B2 (en) | 2008-05-20 | 2009-05-13 | Liquid discharge device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100977162A CN101586868A (en) | 2008-05-20 | 2008-05-20 | Liquid discharging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101586868A true CN101586868A (en) | 2009-11-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100977162A Pending CN101586868A (en) | 2008-05-20 | 2008-05-20 | Liquid discharging device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5325651B2 (en) |
| CN (1) | CN101586868A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102062106A (en) * | 2010-12-31 | 2011-05-18 | 东莞市众隆电机电器制造有限公司 | Perfusion type brushless electric water pump and assembling method thereof |
| CN102536843A (en) * | 2010-12-17 | 2012-07-04 | 刘显海 | Submerged pump with motor permitting water inflow |
| CN109424552A (en) * | 2017-08-23 | 2019-03-05 | 杭州三花研究院有限公司 | Electrodynamic pump |
| CN109525058A (en) * | 2017-09-18 | 2019-03-26 | 浙江三花制冷集团有限公司 | A kind of pump |
| CN114001036A (en) * | 2021-10-25 | 2022-02-01 | 华中科技大学 | Miniature hydraulic suspension mechanical pump and assembly method thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013047500A (en) * | 2011-08-29 | 2013-03-07 | Panasonic Corp | Pump |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0583388U (en) * | 1991-05-31 | 1993-11-12 | 株式会社荏原製作所 | Magnet pump |
| JP4029419B2 (en) * | 1999-05-12 | 2008-01-09 | 株式会社鷺宮製作所 | Drain pump unit |
| DE19956380C1 (en) * | 1999-11-24 | 2001-01-04 | Bosch Gmbh Robert | Fluid pump for vehicle cooling and heating systems has plastics motor housing with claw plates of claw pole stator formed as integral components thereof |
| JP2001207987A (en) * | 2000-01-24 | 2001-08-03 | Saginomiya Seisakusho Inc | Drainage pump |
| JP4389374B2 (en) * | 2000-10-19 | 2009-12-24 | パナソニック電工株式会社 | Pump impeller |
| JP2002155883A (en) * | 2000-11-22 | 2002-05-31 | Ebara Corp | Magnetic pump and motor |
| JP2005002900A (en) * | 2003-06-12 | 2005-01-06 | Dengyosha Oridea:Kk | Shaftless pump |
| JP2005299552A (en) * | 2004-04-14 | 2005-10-27 | Aisin Seiki Co Ltd | Pump device |
-
2008
- 2008-05-20 CN CNA2008100977162A patent/CN101586868A/en active Pending
-
2009
- 2009-05-13 JP JP2009116240A patent/JP5325651B2/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536843A (en) * | 2010-12-17 | 2012-07-04 | 刘显海 | Submerged pump with motor permitting water inflow |
| CN102062106A (en) * | 2010-12-31 | 2011-05-18 | 东莞市众隆电机电器制造有限公司 | Perfusion type brushless electric water pump and assembling method thereof |
| CN109424552A (en) * | 2017-08-23 | 2019-03-05 | 杭州三花研究院有限公司 | Electrodynamic pump |
| CN109525058A (en) * | 2017-09-18 | 2019-03-26 | 浙江三花制冷集团有限公司 | A kind of pump |
| CN114001036A (en) * | 2021-10-25 | 2022-02-01 | 华中科技大学 | Miniature hydraulic suspension mechanical pump and assembly method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2009281382A (en) | 2009-12-03 |
| JP5325651B2 (en) | 2013-10-23 |
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Application publication date: 20091125 |