CN204493209U - Water pump and water heater - Google Patents
Water pump and water heater Download PDFInfo
- Publication number
- CN204493209U CN204493209U CN201420826747.8U CN201420826747U CN204493209U CN 204493209 U CN204493209 U CN 204493209U CN 201420826747 U CN201420826747 U CN 201420826747U CN 204493209 U CN204493209 U CN 204493209U
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- water pump
- motor
- electric machine
- stator frame
- machine casing
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 86
- 238000007789 sealing Methods 0.000 claims abstract description 14
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 210000000078 claw Anatomy 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 9
- 230000008014 freezing Effects 0.000 description 12
- 238000007710 freezing Methods 0.000 description 12
- 239000000203 mixture Substances 0.000 description 7
- 238000004901 spalling Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000009172 bursting Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model provides a water pump and water heater. According to the utility model discloses a water pump, including motor casing, water pump spiral case and pump body subassembly, pump body subassembly includes the motor and by motor drive's impeller, motor casing and water pump spiral case sealing connection to form in the two is inside and holds the chamber, pump body subassembly along axial slidable ground setting in holding the chamber, and will hold the chamber and divide into impeller cavity and motor cavity, the impeller is located inside the impeller cavity, the motor is located motor intracavity portion. The utility model discloses a make pump body subassembly set up in holding the chamber along axial slidable to will hold the chamber and divide into impeller cavity and motor chamber, the surplus water that is inside when the impeller cavity freezes the inflation in-process, promotes pump body subassembly and slides to the motor chamber, thereby makes the volume increase in impeller cavity, eliminates the pressure that freezes the inflation and produce, thereby prevents that the water pump from being spalled.
Description
Technical field
The utility model 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.
Model utility content
The utility model aim to provide a kind of when can prevent water pump from freezing by the water pump of spalling and water heater.
The utility model 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.
The utility model additionally provides a kind of water heater, comprises aforesaid water pump.
According to water pump of the present utility model 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 utility model is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the decomposition texture schematic diagram according to water pump of the present utility model;
Fig. 2 is the sectional structure schematic diagram according to water pump of the present utility model;
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 utility model in detail in conjunction with the embodiments.
As depicted in figs. 1 and 2, according to water pump of the present utility model, 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 utility model 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 utility model, 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.
The utility model additionally provides a kind of water heater, comprises aforesaid water pump, by making pump assembly slide axially, thus is damaged by spalling when preventing water pump from freezing.
As can be seen from the above description, the utility model the above embodiments achieve following technique effect:
According to water pump of the present utility model 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 preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
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 |
|---|---|---|---|
| CN201420826747.8U CN204493209U (en) | 2014-12-22 | 2014-12-22 | Water pump and water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420826747.8U CN204493209U (en) | 2014-12-22 | 2014-12-22 | Water pump and water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204493209U true CN204493209U (en) | 2015-07-22 |
Family
ID=53572532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420826747.8U Active CN204493209U (en) | 2014-12-22 | 2014-12-22 | Water pump and water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204493209U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564703A (en) * | 2014-12-22 | 2015-04-29 | 珠海格力电器股份有限公司 | Water pump and water heater |
| CN109790841A (en) * | 2016-11-03 | 2019-05-21 | 纽摩泰科有限公司 | Prevent the pump for recirculated water of noise under transition state |
-
2014
- 2014-12-22 CN CN201420826747.8U patent/CN204493209U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564703A (en) * | 2014-12-22 | 2015-04-29 | 珠海格力电器股份有限公司 | Water pump and water heater |
| CN109790841A (en) * | 2016-11-03 | 2019-05-21 | 纽摩泰科有限公司 | Prevent the pump for recirculated water of noise under transition state |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |