CN109363599B

CN109363599B - Pump assembly and dish washer

Info

Publication number: CN109363599B
Application number: CN201811141895.5A
Authority: CN
Inventors: 王松; 龚涛; 迟闯; 顾文海
Original assignee: Foshan Welling Washer Motor Manufacturing Co Ltd
Current assignee: Foshan Welling Washer Motor Manufacturing Co Ltd
Priority date: 2018-09-28
Filing date: 2018-09-28
Publication date: 2021-08-27
Anticipated expiration: 2038-09-28
Also published as: CN109363599A

Abstract

The invention discloses a pump assembly and a dish washing machine, wherein the pump assembly comprises a pump shell, an impeller and a heater, the impeller and the heater are positioned in the pump shell, the pump shell comprises a pump shell main body which is provided with an impeller chamber and is provided with an outlet, and a pump cover which is covered on the pump shell main body and is provided with a pump inlet, and the heater comprises a heating pipe main body arranged on the pump cover and connecting terminals at two ends of the heating pipe main body; the pump assembly further comprises a cover part covering the heating pipe main body, the cover part and the pump cover are connected together in a buckling mode on the outer side of the heating pipe main body in the radial direction to cover the heating pipe main body from two sides of the heating pipe main body and the outer side of the heating pipe main body in the radial direction, at least one part of the cover part is a connector, and the connector comprises a shell part forming at least one part of the cover part and a plug-in assembly arranged on the shell part and used for connecting the heater to a power supply. The pump assembly and the dish washing machine provided by the invention can avoid damage to the heating pipe main body and safety problems and the like.

Description

Pump assembly and dish washer

Technical Field

The invention relates to the technical field of household appliances, in particular to a pump assembly and a dish washing machine.

Background

In the related art, a dishwasher is provided with a water pump to wash dishes by driving water flow through the water pump, and a heater (generally, a heating pipe) is provided on a pump case to heat fluid inside the pump, so that the water pump can pump the heated fluid.

At present, because be provided with the connector that is used for providing the power to the heating pipe on the pump case, can't set up the apron that covers the heating pipe usually in the position that sets up the connector, lead to the heating part of at least part of heating pipe to expose outside, not only cause the damage to the heating pipe like this easily, can appear the problem of safety problem and unable clearance under the condition such as blasting appear in the heating pipe moreover.

Disclosure of Invention

The invention aims to overcome the problems that the heating part of the heating pipe is easily damaged when exposed outside, the safety problem is caused under the condition of blasting, the heating pipe cannot be cleaned and the like in the prior art.

In order to achieve the above object, an aspect of the present invention provides a pump assembly including a pump housing, an impeller located in the pump housing, and a heater for heating fluid in the pump housing, the pump housing including a pump housing main body formed with an impeller chamber accommodating the impeller and having an outlet, and a pump cover covering the pump housing main body and having a pump inlet, the heater including a heater pipe main body capable of generating heat provided on the pump cover, and connection terminals at both ends of the heater pipe main body;

the pump assembly further comprises a cover part covering the heating pipe main body, the cover part and the pump cover are connected together in a buckling mode on the outer side of the heating pipe main body in the radial direction to cover the heating pipe main body from the two sides of the heating pipe main body and the outer side of the heating pipe main body in the radial direction, at least one part of the cover part is a connector, and the connector comprises a shell part and a plug-in assembly arranged on the shell part and used for connecting the heater to a power supply.

Preferably, the heating pipe main body is disposed around the pump inlet of the pump cover, the housing portion extends circumferentially to cover a portion of the heating pipe main body, and the cover member further includes a cover plate including a cover plate main body extending circumferentially from one end of the housing portion to cover the heating pipe main body together with the housing portion.

Preferably, an end surface of one end of the housing portion, which is abutted to the cover main body in the circumferential direction, is flush with the end surface of the cover main body or the housing portion extends beyond the end surface of the cover main body by 0-5 mm.

Preferably, the housing portion includes a main cover portion on a side of the heating pipe main body facing away from the pump cover and a side cover portion extending from an outer side edge of the main cover portion to the pump cover in a bending manner.

Preferably, the cover plate further comprises an annular structure connected to the cover plate body and disposed around the pump inlet;

the annular structure is further provided with a fixing portion used for fixing the shell portion of the connector on the pump cover.

Preferably, a boss is arranged on the outer side of the casing part, which is away from the heating pipe main body, the fixing part is a bending body which is lapped on the outer side surface of the casing part and can be fixed on the pump cover, and a positioning hole matched with the boss is arranged on the bending body.

Preferably, a sleeve is arranged at the pump inlet of the pump cover, a hoop is arranged in the sleeve, and the hoop and the sleeve form a flow passage of the pump inlet, wherein the surfaces of the pump cover, the hoop and the sleeve facing the impeller and used for forming the side wall of the impeller chamber are arranged in parallel.

Preferably, the inner wall of the hoop towards one end of the impeller is radially recessed to form an inner diameter expansion part and a step is formed on the inner wall;

the upper cover plate of the impeller comprises a main body part with an opening and an annular part arranged at the opening, and the annular part extends into the inner diameter expansion part of the hoop.

Preferably, the depth a of the annular part extending into the band is greater than or equal to 2 mm.

Preferably, a gap is formed between the axial end face of the annular part and the step of the ferrule, and the gap b is 0.3-2 mm.

Preferably, a gap is formed between the outer surface of the annular part and the inner wall of the inner diameter expansion part, and the gap c is 0.3-2 mm.

Preferably, a gap is formed between flush surfaces of the pump cover, the ferrule and the sleeve facing the impeller and the main body part of the upper cover plate, and the gap d is 0.3-2 mm.

Preferably, a first flange extending radially outward is provided at an end of the sleeve facing the impeller, and a first recess accommodating the first flange is formed at a radially inner edge of the pump cover at a side facing the impeller.

Preferably, an end of the band facing the impeller is provided with a second flange extending radially outward, and an end of the sleeve facing the impeller is formed at an inner side with a second recess receiving the second flange.

According to a further aspect of the present invention, there is also provided a dishwasher provided with a pump assembly as described above.

The pump assembly and the dish-washing machine provided by the invention can prevent the heating pipe main body from being exposed on the radial outer side and the axial outer side, so that the heating pipe main body is prevented from being damaged, blasting residues can be limited in the cover component under the conditions that the heating pipe main body is blasted and the like, the safety problem is avoided, and the cleaning is facilitated.

Drawings

FIG. 1 is a cross-sectional schematic view of a pump assembly according to one embodiment of the present invention;

FIG. 2 is an enlarged view of FIG. 1 at A;

FIG. 3 is a cutaway schematic view of portions of the components of the pump assembly of FIG. 1;

FIG. 4 is an enlarged view of FIG. 3 at B;

FIG. 5 is a schematic perspective view of the cover member covering the heater body over the pump cover;

FIG. 6 is a schematic view of the components of FIG. 5 in a separated state;

FIG. 7 is a schematic perspective view of the heater disposed on the pump cover;

fig. 8 is a schematic perspective view of the cover plate.

Description of the reference numerals

1-a pump casing; 11-a pump housing body; 111-pump outlet; 12-pump cover; 121-pump inlet; 122 — a first recess; 13-lower pump casing; 2-an impeller; 21-upper cover plate; 211-a body portion; 212-an annular portion; 3, a motor; 4-a heater; 41-heating tube main body; 42-connection terminal; 5-a connector; 51-a housing portion; 511-a main cover part; 512-side cover part; 52-a plug-in part; 53-wire; 54-a boss; 6-a sleeve; 61-a first flange; 62-a second recess; 7-a hoop; 71-an inner diameter enlargement; 72-step; 73-a second flange; 8-cover plate; 81-a cover plate body; 82-ring structure; 83-a fixation section; 831-positioning hole; 84-connecting part.

Detailed Description

The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

The invention provides a pump assembly, as shown in fig. 1, the pump assembly comprises a pump shell 1, an impeller 2 positioned in the pump shell 1 and a heater 4 for heating fluid in the pump shell 1, the pump shell 1 comprises a pump shell main body 11 which is formed with an impeller chamber for accommodating the impeller 2 and is provided with an outlet 111, and a pump cover 12 which is covered on the pump shell main body 11 and is provided with a pump inlet 121, and the heater 4 comprises a heating pipe main body 41 which is arranged on the pump cover 12 and can generate heat and connecting terminals 42 (combined with fig. 7) at two ends of the heating pipe main body 41.

Referring to fig. 5 and 6, the pump assembly further includes a cover member covering the heater duct main body 41, the cover member being snap-coupled with the pump cover 12 on the outer side in the radial direction to cover the heater duct main body 41 from both sides of the heater duct main body 41 and the outer side of the heater duct main body 41 in the radial direction, wherein at least a portion of the cover member is a connector 5, and the connector 5 includes a housing portion 51 forming at least a portion of the cover member and a plug assembly provided on the housing portion 51 for connecting the heater 4 to a power supply. The radial direction is a radial direction centered on the center of the impeller 2, and the two sides of the heating pipe main body 41 are a side where the pump cover 12 is disposed and a side opposite to the pump cover 12.

According to the technical scheme provided by the invention, the heating part (the heating pipe main body 41) of the heating pipe is covered by arranging the shell part 51 of the connector 5 as a part of the cover part, so that the problems of easy damage and safety of the heater and the like caused by the fact that the heating part of the heater 4 is exposed at the position where the connector is arranged in the prior art are solved. The technical scheme provided by the invention can prevent the heating pipe main body 41 from being exposed on the radial outer side and the axial outer side, can avoid damage to the heating pipe main body 41, can prevent blasting residues from being limited in the cover component under the condition that the heating pipe main body 41 is blasted and the like, avoids safety problems, and is also beneficial to cleaning.

The technical solution provided by the present invention is further described with reference to the following drawings according to the specific embodiments.

As shown in fig. 5 to 7, the heater duct body 41 of the heater is disposed around the pump inlet 121 of the pump cover 12, the housing portion 51 of the connector 5 extends circumferentially to cover a portion of the heater duct body 41, and the cover member further includes a cover plate 8, the cover plate 8 including a cover plate body 81 extending circumferentially from one end of the housing portion 51 to cover the heater duct body 41 together with the housing portion 51.

Preferably, an end surface of one end of the housing 51 abutting the cover main body 81 in the circumferential direction is flush with an end surface of the cover main body 81 or the housing 51 extends 0 to 5mm beyond the end surface of the cover main body 81, and the housing 51 is higher than the cover main body 81. The housing portion 51 abuts against the end surface of the cover main body 81 so as to completely cover the heater main body 41 and avoid exposure at the abutting portion.

The housing 51 of the connector 5 includes a main cover 511 on a side of the heating pipe main body 41 away from the pump cover 12, and a side cover 512 extending from an outer edge of the main cover 511 to the pump cover 12. The side cover 512 is bent in the axial direction to form a stepped structure, which is not only beneficial to being buckled on the pump cover 12, but also can enhance the rigidity of the side cover 512. In addition, the connector 5 further comprises a plug assembly connected to the housing 51 for plugging the connector 5, the plug assembly comprising a plug portion 52 fixed outside the housing 51, a wire 53 extending inside the housing 51 electrically connected to the plug portion 52, the wire 53 being connectable to the connection terminal 42 of the heater 4 for supplying power to the heater 4. A protector or the like may be provided inside the housing portion 51.

Similar to the structure of the housing 51, the cover plate body 81 of the cover plate 8 also includes a plate body disposed on a side of the heating pipe body 41 away from the pump cover 12 and a side plate bent from an outer edge of the plate body and extending to the pump cover 12, and the side plate is bent to form a stepped structure.

The specific structure of the cover plate 8 is shown in fig. 8, and includes a cover plate main body 81 and an annular structure 82 connected to the cover plate main body 81 and disposed around the pump inlet 121, and the annular structure 82 is further provided with a fixing portion 83 for fixing the housing portion 51 of the connector 5 to the pump cover 12. The outer side edge of the cover main body 81 is also provided with a coupling portion 84, and the coupling portion 84 can be fixed to the pump cover 12.

The cover plate 8 is provided with the ring structure 82, which not only facilitates the arrangement of the fixing portion 83 to fix the connector 5 on the pump cover 12 via the fixing portion 83, but also secures the connecting portion 84 and the fixing portion 83, which are circumferentially spaced apart from each other, on the ring structure 82, so that the cover plate 8 can be firmly fixed on the pump cover 12.

Preferably, a boss 54 is disposed on an outer side of the housing portion 51 away from the heating pipe main body 41, the fixing portion 83 is a bent body that is lapped on an outer side surface of the housing portion 51 and can be fixed on the pump cover 12, and a positioning hole 831 that is engaged with the boss 54 is disposed on the bent body. The bending body can be arranged to be clamped on the pump cover 12 and can also be fixed on the pump cover 12 in a welding or riveting mode.

Connecting portion 84 also sets up to the bending structure, and this bending structure can the joint on pump cover 12, also can fix on pump cover 12 through riveting or welded mode.

Of course, it will be understood by those skilled in the art that the housing portion 51 and the cover plate 8 of the connector 5 are not limited to the structure provided in the present embodiment, and other structures capable of preventing the heating pipe main body 41 from being exposed to the outside may be used.

In the present embodiment, in order to form the flow channel at the pump inlet 121 of the pump cover 12, the sleeve 6 is disposed at the pump inlet 121, the hoop 7 is disposed in the sleeve 6, and the hoop 7 and the sleeve 6 form the flow channel of the pump inlet 121, wherein, as shown in fig. 1 to 3, the surfaces of the pump cover 12, the hoop 7 and the sleeve 6 facing the impeller 2 and forming the side wall of the impeller chamber are disposed flush with each other. That is to say, the surfaces of the pump cover 12, the hoop 7 and the sleeve 6 contacting the fluid in the impeller chamber are flush, and a smooth flow channel is formed on one side of the impeller.

More specifically, as shown in fig. 3 and 4, one end of the sleeve 6 facing the impeller 2 is provided with a first flange 61 extending radially outward, a first concave portion 122 for accommodating the first flange 61 is formed at one side facing the impeller 2 at the edge of the radially inner side of the pump cover 12, specifically, a stepped structure is formed by bending outward at the radially inner side of the pump cover 12, the stepped structure forms the first concave portion 122, and the annular body facing the outermost side is clamped on the outer wall surface of the sleeve 6, so that the sleeve 6 can be prevented from being separated from the pump cover 2. The surface of the first flange 61 of the sleeve 6 facing the impeller 2 is flush with the surface of the pump cover 12 facing the impeller 2.

The end of the band 7 facing the impeller 2 is provided with a second flange 73 extending radially outward, and the end of the sleeve 6 facing the impeller 2 is formed on the inner side with a second recess 62 accommodating the second flange 73. The surface of the second flange 73 facing the impeller 2 is flush with the end surface of the first flange 61 of the sleeve 6, so that the water-facing surfaces of the pump cover 12, the sleeve 6 and the ferrule 7 are flush.

In the present embodiment, as shown in fig. 2 (see fig. 3), the shroud 7 is radially recessed toward the inner wall of one end of the impeller 2 to form an inner diameter-enlarged portion 71 and a step 72 is formed on the inner wall; the upper cover plate 21 of the impeller 2 includes a main body portion 211 having an opening and an annular portion 212 provided in the opening, and the annular portion 212 extends into the inner diameter-enlarged portion 71 of the ferrule 7.

Preferably, the depth a of the annular portion 212 extending into the ferrule 7 is greater than or equal to 2 mm.

Preferably, a gap is provided between the axial end surface of the annular portion 212 and the step 72 of the ferrule 7, and the gap b is 0.3-2 mm.

Preferably, a gap is formed between the outer surface of the annular portion 212 and the inner wall of the inner diameter-enlarged portion 71, and the gap c is 0.3-2 mm.

Preferably, the flush surfaces of the pump cover 12, the ferrule 7, and the sleeve 6 facing the impeller 2 have a gap d of 0.3-2mm with the main body portion 211 of the upper cover plate 21.

The fluid entering from the flow passage of the pump inlet 12 can be smoothly entered into the impeller 2 and then pumped out of the impeller 2 by the gap arrangement between the annular portion 212 of the impeller and the ferrule 7, and the hydraulic efficiency can be improved.

The pump assembly provided in this embodiment is a pump assembly suitable for use in a dishwasher (of course, the pump assembly may also be used in other suitable devices or apparatus), the pump housing of which further comprises a lower pump housing 13 connected to the pump housing body 11, the lower pump housing 13 forming a chamber for accommodating the rotor of the motor 3 (which drives the impeller 2 to rotate), which is a common technical means of such pumps and will not be described again here.

The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, numerous simple modifications can be made to the technical solution of the invention, including combinations of the individual specific technical features in any suitable way. The invention is not described in detail in order to avoid unnecessary repetition. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.

Claims

1. A pump assembly characterized by comprising a pump housing (1), an impeller (2) located inside the pump housing (1), and a heater (4) for heating fluid inside the pump housing (1), the pump housing (1) including a pump housing main body (11) formed with an impeller chamber accommodating the impeller (2) and having a pump outlet (111), and a pump cover (12) covering the pump housing main body (11) and having a pump inlet (121), the heater (4) including a heat pipe main body (41) capable of generating heat provided on the pump cover (12), and connection terminals (42) at both ends of the heat pipe main body (41);

the pump assembly further comprises a cover part covering the heating pipe main body (41), the cover part is connected with the pump cover (12) in a buckling mode on the outer side in the radial direction, so that the heating pipe main body (41) can be covered on the two sides of the heating pipe main body (41) and the outer side of the heating pipe main body (41) in the radial direction, at least one part of the cover part is a connector (5), and the connector (5) comprises a shell part (51) and a plug-in assembly arranged on the shell part (51) and used for connecting the heater (4) to a power supply.

2. The pump assembly of claim 1, wherein the heater cartridge body (41) is disposed around the pump inlet (121) of the pump cover (12), the housing portion (51) extends circumferentially over a portion of the heater cartridge body (41), the cover member further comprising a cover plate (8), the cover plate (8) comprising a cover plate body (81) extending circumferentially from one end of the housing portion (51) to cover the heater cartridge body (41) with the housing portion (51).

3. The pump assembly according to claim 2, characterized in that an end face of one end of the housing portion (51) that interfaces with the cover body (81) in the circumferential direction is flush with an end face of the cover body (81) or the housing portion (51) exceeds the end face of the cover body (81) by 0-5 mm.

4. The pump assembly of claim 2, wherein the housing portion (51) includes a main cover portion (511) on a side of the heater duct body (41) facing away from the pump cover (12) and a side cover portion (512) extending from an outer edge of the main cover portion (511) to the pump cover (12) by bending.

5. Pump assembly according to claim 2, wherein the cover plate (8) further comprises an annular structure (82) arranged around the pump inlet (121) connected to the cover plate body (81);

the annular structure (82) is further provided with a fixing portion (83) used for fixing the shell portion (51) of the connector (5) on the pump cover (12).

6. The pump assembly according to claim 5, characterized in that a boss (54) is provided on the outer side of the housing portion (51) facing away from the heater tube main body (41), the fixing portion (83) is a bent body which is lapped on the outer side surface of the housing portion (51) and can be fixed on the pump cover (12), and a positioning hole (831) which is matched with the boss (54) is provided on the bent body.

7. A pump assembly according to any one of claims 1-6, characterized in that a sleeve (6) is provided at the pump inlet (121) of the pump cap (12), a collar (7) is provided within the sleeve (6), the collar (7) and the sleeve (6) forming a flow channel of the pump inlet (121), wherein the surfaces of the pump cap (12), the collar (7) and the sleeve (6) facing the impeller (2) and intended to form the impeller chamber side wall are arranged flush.

8. The pump assembly according to claim 7, characterized in that the inner wall of the band (7) towards the end of the impeller (2) is radially recessed forming an inner diameter enlargement (71) and a step (72) is formed at the inner wall;

the upper cover plate (21) of the impeller (2) comprises a main body part (211) with an opening and an annular part (212) arranged at the opening, wherein the annular part (212) extends into the inner diameter expansion part (71) of the hoop (7).

9. The pump assembly according to claim 8, wherein the depth a of the annular portion (212) protruding into the band (7) is greater than or equal to 2 mm.

10. The pump assembly according to claim 8, characterized in that there is a gap between the axial end face of the annular portion (212) and the step (72) of the band (7), the gap b being 0.3-2 mm.

11. Pump assembly according to claim 8, characterized in that between the outer surface of the annular portion (212) and the inner wall of the inner diameter enlargement (71) there is a clearance, c, of 0.3-2 mm.

12. The pump assembly according to claim 8, characterized in that the flush surfaces of the pump cover (12), the ferrule (7) and the sleeve (6) facing the impeller (2) have a clearance d of 0.3-2mm from the main body portion (211) of the upper cover plate (21).

13. The pump assembly according to claim 7, characterized in that the end of the sleeve (6) facing the impeller (2) is provided with a first flange (61) extending radially outwards, and the radially inner edge of the pump cover (12) forms a first recess (122) at the side facing the impeller (2) accommodating the first flange (61).

14. Pump assembly according to claim 7, characterized in that the end of the band (7) facing the impeller (2) is provided with a second flange (73) extending radially outwards, and the end of the sleeve (6) facing the impeller (2) is formed on the inside with a second recess (62) accommodating the second flange (73).

15. A dishwasher provided with a pump assembly according to claims 1-14.