CN104564703A - Water pump and water heater - Google Patents
Water pump and water heater Download PDFInfo
- Publication number
- CN104564703A CN104564703A CN201410820545.7A CN201410820545A CN104564703A CN 104564703 A CN104564703 A CN 104564703A CN 201410820545 A CN201410820545 A CN 201410820545A CN 104564703 A CN104564703 A CN 104564703A
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- CN
- China
- Prior art keywords
- water pump
- motor
- cavity
- electric machine
- stator frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
Abstract
The invention provides a water pump and a water heater. The water pump provided by the invention comprises a motor shell, a water pump volute and a pump body assembly, wherein the pump body assembly comprises a motor and an impeller driven by the motor; the motor shell is hermetically connected with the water pump volute, and an accommodating cavity is formed between the motor shell and the water pump volute; the pump body assembly is slidably arranged in the accommodating cavity in the axial direction and divides the accommodating cavity into an impeller cavity and a motor cavity; the impeller is positioned inside the impeller cavity; the motor is positioned inside the motor cavity. According to the water pump, the pump body assembly is slidably arranged in the accommodating cavity in the axial direction and divides the accommodating cavity into the impeller cavity and the motor cavity; in the icing expansion process of remained water inside the impeller cavity, the pump body assembly is pushed to slide to the motor cavity, so that the volume of the impeller cavity is improved, pressure generated by icing expansion is omitted, and therefore the water pump is prevented from expansion cracking.
Description
Technical field
The present invention relates to field of water heaters, in particular to a kind of water pump and water heater.
Background technique
In prior art; easily there is bursting by freezing problem at north of china in winter in the circulating water pump in air-source water heater, when temperature is lower than less than 0 DEG C, does not use if air-source water heater is shut down; do not have again the Yu Shuishi in emptying water pump, the easy freezing and expansion of the remaining water capacity in water pump causes water pump by spalling.
Summary of the invention
The present invention aim to provide a kind of when can prevent water pump from freezing by the water pump of spalling and water heater.
The invention provides a kind of water pump, comprise electric machine casing, water pump spiral casing and pump assembly, pump assembly comprises motor and by motor-driven impeller, electric machine casing and water pump spiral casing are tightly connected, and at the two inner formation receiving cavity, pump assembly is slidably disposed in receiving cavity vertically, and receiving cavity is divided into impeller cavity and motor cavity, impeller is positioned at impeller cavity inside, and motor is positioned at motor cavity inside.
Further, water pump also comprises Returnning spring, and the two ends of Returnning spring are connected on the second end of electric machine casing and the second end of motor respectively, and wherein, the second end of electric machine casing and the second end of motor are the one end away from impeller.
Further, motor comprises rotor, stator and stator frame, and rotor is arranged on stator rotationally, and stator is fixedly installed on stator frame; Be provided with on the outer circumferential face of stator frame and on the inner peripheral surface of electric machine casing and cooperatively interact and along the axially extended sliding motion structure of rotor.
Further, sliding motion structure comprises the slide rail be arranged on the outer circumferential face of stator frame and the chute be arranged on the inner peripheral surface of electric machine casing.
Further, the interior edge face of the second end of electric machine casing is provided with towards first of electric machine casing inside the spacing back-up ring, on the end face of the second end of stator frame, corresponding first spacing back-up ring is provided with the second spacing back-up ring, and back-up ring spacing with first and the second spacing back-up ring coordinate respectively at the two ends of Returnning spring.
Further, the outer circumferential face of the first end of stator frame is provided with the first seal groove, in the first seal groove, is provided with the seal ring of sealed stator frame and electric machine casing.
Further, motor also comprises shield assembly, and shield assembly comprises the radial part being set in epitrochanterian cylindrical part and being extended by the first end radial direction of cylindrical part; Cylindrical part coordinates with rotor turns, and the first end of radial part and stator frame is tightly connected.
Further, the first end of stator frame is provided with draw-in groove, and the outer circumferential side of radial part is provided with the claw coordinated with draw-in groove; The end face of stator frame is provided with the second seal groove, in the second seal groove, is provided with the first sealing gasket of sealing radial part and stator frame.
Further, the second end of cylindrical part is also provided with plug screw portion, plug screw portion is provided with the plug screw with plug screw portion screw-thread fit, and the outer circumferential face in plug screw portion is provided with seal ring; Second end of electric machine casing is provided with the sleeve coordinated with plug screw portion, and the inner peripheral surface of seal ring and sleeve is sealed and matched.
Present invention also offers a kind of water heater, comprise aforesaid water pump.
According to water pump of the present invention and water heater, be slidably disposed on vertically in receiving cavity by making pump assembly, and receiving cavity is divided into impeller cavity and motor cavity, when in water freezing inflation process more than impeller cavity inside, promote pump assembly to slide to motor cavity, thus the volume of impeller cavity is increased, eliminate the pressure that freezing and expansion produces, thus prevent water pump by spalling.
Accompanying drawing explanation
The accompanying drawing forming a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the decomposition texture schematic diagram according to water pump of the present invention;
Fig. 2 is the sectional structure schematic diagram according to water pump of the present invention;
Fig. 3 is the partial enlarged drawing at label A place in Fig. 1;
Fig. 4 is the partial enlarged drawing at label B place in Fig. 1.
Description of reference numerals:
10, electric machine casing; 11, chute; 12, the first spacing back-up ring; 13, sleeve; 14, the second sealing gasket; 15, screw;
20, water pump spiral casing; 21, water intake; 22, water outlet; 23, lining;
30, pump assembly; 31, impeller; 32, rotor; 33, stator; 34, stator frame; 341, slide rail; 342, the second spacing back-up ring; 343, seal ring; 344, draw-in groove; 345, the first sealing gasket;
35, shield assembly; 351, cylindrical part; 352, radial part; 353, claw; 354, plug screw portion; 355, plug screw; 356, seal ring;
40, Returnning spring.
Embodiment
Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
As depicted in figs. 1 and 2, according to water pump of the present invention, comprise electric machine casing 10, water pump spiral casing 20 and pump assembly 30, pump assembly 30 comprises motor and by motor-driven impeller 31, electric machine casing 10 and water pump spiral casing 20 are tightly connected, and at the two inner formation receiving cavity, pump assembly 30 is slidably disposed in receiving cavity vertically, and receiving cavity is divided into impeller cavity and motor cavity, impeller 31 is positioned at impeller cavity inside, and motor is positioned at motor cavity inside.The present invention makes pump assembly 30 be slidably disposed on vertically in receiving cavity; and receiving cavity is divided into impeller cavity and motor cavity; when in water freezing inflation process more than impeller cavity inside; promote pump assembly 30 to slide to motor cavity; thus the volume of impeller cavity is increased; eliminate the pressure that freezing and expansion produces, thus prevent water pump spiral casing 20 by spalling, protection pump body structure exempts from damage.
Particularly, shown in composition graphs 1 and Fig. 2, motor comprises rotor 32, stator 33 and stator frame 34, rotor 32 is arranged on stator 33 rotationally, impeller 31 circumference is arranged on the first end of rotor 32 regularly, stator 33 adopts the modes such as interference fit to be fixedly installed on stator frame 34, be provided with on the outer circumferential face of stator frame 34 and on the inner peripheral surface of electric machine casing 10 and cooperatively interact and along the axially extended sliding motion structure of rotor 32, thus whole pump assembly 30 can be slid axially by electric machine casing 10 relatively, in water freezing inflation process more than impeller cavity inside, the volume of impeller cavity is increased, eliminate the pressure that freezing and expansion produces, thus prevent water pump spiral casing 20 by spalling, protection pump body structure exempts from damage.
More specifically, shown in composition graphs 1, the chute 11 that sliding motion structure comprises the slide rail 341 on the outer circumferential face being arranged on stator frame 34 and is arranged on the inner peripheral surface of electric machine casing 10, slide rail 341 is slidably disposed in chute 11, slide rail 341 and chute 11 all extend along the axis of motor, thus make pump assembly can sliding axially along electric machine casing 10.
Usually, chute 11 and slide rail 341 circumferentially evenly can arrange many groups, stressed evenly, be generally three groups or four groups (shown in Fig. 1 being four groups), guide rail can adopt ptfe composite material.
Preferably, shown in composition graphs 1 and Fig. 2, the outer circumferential face of the first end of stator frame 34 is provided with the first seal groove, in the first seal groove, is provided with the seal ring 343 of sealed stator frame 34 and electric machine casing 10, ensure the sealing between stator frame 34 and electric machine casing 10, prevent the water in impeller cavity from entering motor cavity, ensure motor reliably working, seal ring 343 can adopt O type circle, as required, O type circle can be set to multiple tracks, such as, Figure 2 shows that twice.
Further, described in composition graphs 1 and Fig. 2, motor also comprises shield assembly 35, shield assembly 35 comprises the cylindrical part 351 be set on rotor 32 and the radial part 352 extended by the first end radial direction of cylindrical part 351, cylindrical part 351 and rotor 32 can be rotatably assorted by bearing etc., radial part 352 is tightly connected with the first end of stator frame 34, prevents the water in water pump spiral casing 20 (volute chamber) from entering motor winding inner.
Particularly, shown in composition graphs 1, Fig. 3 and Fig. 4, the first end of stator frame 34 is provided with draw-in groove 344, and the outer circumferential side of radial part 352 is provided with the claw 353 coordinated with draw-in groove 344, claw 353 is connected in draw-in groove 344, thus is fixed on stator frame 34 by shield assembly 35.And, the end face of stator frame 34 is provided with the second seal groove, first sealing gasket 345 is set in second seal groove, claw 353 is connected to after in draw-in groove 344, first sealing gasket 345 is pressed in the second seal groove by radial part 352, thus seal between radial part 352 and stator frame 34, prevent the water in water pump spiral casing 20 (volute chamber) from entering motor winding inner.
Shown in 2, second end of cylindrical part 351 is also provided with plug screw portion 354, plug screw portion 354 is provided with the plug screw 355 with plug screw portion 354 screw-thread fit, plug screw 355 is set, convenient air of releasing in cylindrical part 351 and water pump spiral casing 20, prevent water pump spiral casing 20 inside from producing cavitation, thus avoid cavitation to impact pump performance and structure.
Preferably, the outer circumferential face in plug screw portion 354 is provided with seal ring 356, the second end of electric machine casing 10 is provided with the sleeve 13 coordinated with plug screw portion 354, and seal ring 356 is sealed and matched with the inner peripheral surface of sleeve 13, thus the second end sealing to cylindrical part 351.
Preferably, shown in composition graphs 1 and Fig. 2, water pump also comprises Returnning spring 40, the two ends of Returnning spring 40 are connected on the second end of electric machine casing 10 and the second end of motor respectively, when in the melt ice process in impeller cavity, Returnning spring 40 promotes pump assembly 30 and returns to normal position gradually, thus water pump is normally worked.
Particularly, shown in composition graphs 1 and Fig. 2, in order to fixed reset spring 40 better, the interior edge face of the second end of electric machine casing 10 is provided with towards first of electric machine casing 10 inside the spacing back-up ring 12, on the end face of the second end of stator frame 34, corresponding first spacing back-up ring 12 is provided with the second spacing back-up ring 342, and back-up ring 12 spacing with first and the second spacing back-up ring 342 coordinate respectively at the two ends of Returnning spring 40.Namely the first spacing back-up ring 12 and the second spacing back-up ring 342 form restriction to the two ends of Returnning spring 40 respectively, ensure that Returnning spring 40 is reliably fixed.
Integral installation figure as shown in Figure 2, electric machine casing 10 by screw 15 or bolt fixing with water pump spiral casing 20, and to be sealed by the second sealing gasket 14, prevent water pump spiral casing 20 inside water to external leakage.Pump assembly 30 is coordinated by slide rail 341 and chute 11, and entirety can slide axially, and water pump spiral casing 20 is provided with water intake 21 and water outlet 22, at the shaft core position of water pump spiral casing 20, is provided with lining 23 and coordinates with impeller 31, ensures that impeller 31 can work.In pump working process, motor driven impeller 31 pump water.The outer circumferential face of the first end of stator frame 34 is arranged seal ring 343, ensure that the sealing between impeller cavity and motor cavity.
It should be noted that, in the present invention, the first end of the parts such as motor, electric machine casing 10, stator frame 34 all depends on one end of nearly impeller 31; Correspondingly, the second end of above-mentioned parts, is the one end away from impeller 31.
Present invention also offers a kind of water heater, comprise aforesaid water pump, by making pump assembly slide axially, thus being damaged by spalling when preventing water pump from freezing.
As can be seen from the above description, the above embodiments of the present invention achieve following technique effect:
According to water pump of the present invention and water heater, be slidably disposed on vertically in receiving cavity by making pump assembly, and receiving cavity is divided into impeller cavity and motor cavity, when in water freezing inflation process more than impeller cavity inside, promote pump assembly to slide to motor cavity, thus the volume of impeller cavity is increased, eliminate the pressure that freezing and expansion produces, thus prevent water pump by spalling.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a water pump, it is characterized in that, comprise electric machine casing (10), water pump spiral casing (20) and pump assembly (30), pump assembly (30) comprises motor and by described motor-driven impeller (31), described electric machine casing (10) and described water pump spiral casing (20) are tightly connected, and at the two inner formation receiving cavity, described pump assembly (30) is slidably disposed in described receiving cavity vertically, and described receiving cavity is divided into impeller cavity and motor cavity, it is inner that described impeller (31) is positioned at described impeller cavity, it is inner that described motor is positioned at described motor cavity.
2. water pump according to claim 1, is characterized in that,
Described water pump also comprises Returnning spring (40), the two ends of described Returnning spring (40) are connected on the second end of described electric machine casing (10) and the second end of described motor respectively, wherein, the second end of described electric machine casing (10) and the second end of motor are the one end away from described impeller (31).
3. water pump according to claim 2, is characterized in that,
Described motor comprises rotor (32), stator (33) and stator frame (34), described rotor (32) is arranged on described stator (33) rotationally, and described stator (33) is fixedly installed on described stator frame (34);
Be provided with on the outer circumferential face of described stator frame (34) and on the inner peripheral surface of described electric machine casing (10) and cooperatively interact and along the axially extended sliding motion structure of described rotor (32).
4. water pump according to claim 3, is characterized in that,
The chute (11) that described sliding motion structure comprises the slide rail (341) on the outer circumferential face being arranged on described stator frame (34) and is arranged on the inner peripheral surface of described electric machine casing (10).
5. water pump according to claim 3, is characterized in that,
The interior edge face of the second end of described electric machine casing (10) is provided with towards the first inner spacing back-up ring (12) of described electric machine casing (10), on the end face of the second end of described stator frame (34), corresponding described first spacing back-up ring (12) is provided with the second spacing back-up ring (342), and the two ends of described Returnning spring (40) coordinate with described first spacing back-up ring (12) and described second spacing back-up ring (342) respectively.
6. water pump according to claim 3, is characterized in that,
The outer circumferential face of the first end of described stator frame (34) is provided with the first seal groove, in described first seal groove, is provided with the seal ring (343) of the described stator frame of sealing (34) and described electric machine casing (10).
7. water pump according to claim 3, is characterized in that,
Described motor also comprises shield assembly (35), and described shield assembly (35) comprises the cylindrical part (351) be set on described rotor (32) and the radial part (352) extended by the first end radial direction of described cylindrical part (351);
Described cylindrical part (351) and described rotor (32) are rotatably assorted, and described radial part (352) is tightly connected with the first end of described stator frame (34).
8. water pump according to claim 7, is characterized in that,
The first end of described stator frame (34) is provided with draw-in groove (344), and the outer circumferential side of described radial part (352) is provided with the claw (353) coordinated with described draw-in groove (344);
The end face of described stator frame (34) is provided with the second seal groove, in described second seal groove, is provided with first sealing gasket (345) of the described radial part of sealing (352) and described stator frame (34).
9. water pump according to claim 7, is characterized in that,
Second end of described cylindrical part (351) is also provided with plug screw portion (354), described plug screw portion (354) is provided with the plug screw (355) with described plug screw portion (354) screw-thread fit, the outer circumferential face of described plug screw portion (354) is provided with seal ring (356);
Second end of described electric machine casing (10) is provided with the sleeve (13) coordinated with described plug screw portion (354), and described seal ring (356) is sealed and matched with the inner peripheral surface of described sleeve (13).
10. a water heater, comprises water pump, it is characterized in that, the water pump of described water pump according to any one of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410820545.7A CN104564703B (en) | 2014-12-22 | 2014-12-22 | Water pump and water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410820545.7A CN104564703B (en) | 2014-12-22 | 2014-12-22 | Water pump and water heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104564703A true CN104564703A (en) | 2015-04-29 |
| CN104564703B CN104564703B (en) | 2017-01-25 |
Family
ID=53081555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410820545.7A Active CN104564703B (en) | 2014-12-22 | 2014-12-22 | Water pump and water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104564703B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19508404A1 (en) * | 1995-03-09 | 1996-09-12 | Skf Gmbh | Bearing pump impeller of an IC engine cooling water pump |
| CN2450419Y (en) * | 2000-10-31 | 2001-09-26 | 郑琼玉 | Frostproof self-priming fresh-water pump |
| JP2008223574A (en) * | 2007-03-12 | 2008-09-25 | Noritz Corp | Canned pump |
| CN201461453U (en) * | 2009-03-18 | 2010-05-12 | 朱峰 | Anti-freezing water pump |
| CN101846102A (en) * | 2010-06-03 | 2010-09-29 | 浙江利欧股份有限公司 | Frost crack prevention water pump |
| CN204493209U (en) * | 2014-12-22 | 2015-07-22 | 珠海格力电器股份有限公司 | Water pump and water heater |
-
2014
- 2014-12-22 CN CN201410820545.7A patent/CN104564703B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19508404A1 (en) * | 1995-03-09 | 1996-09-12 | Skf Gmbh | Bearing pump impeller of an IC engine cooling water pump |
| CN2450419Y (en) * | 2000-10-31 | 2001-09-26 | 郑琼玉 | Frostproof self-priming fresh-water pump |
| JP2008223574A (en) * | 2007-03-12 | 2008-09-25 | Noritz Corp | Canned pump |
| CN201461453U (en) * | 2009-03-18 | 2010-05-12 | 朱峰 | Anti-freezing water pump |
| CN101846102A (en) * | 2010-06-03 | 2010-09-29 | 浙江利欧股份有限公司 | Frost crack prevention water pump |
| CN204493209U (en) * | 2014-12-22 | 2015-07-22 | 珠海格力电器股份有限公司 | Water pump and water heater |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104564703B (en) | 2017-01-25 |
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