CN216842260U

CN216842260U - Circulating washing pump for dish washing machine

Info

Publication number: CN216842260U
Application number: CN202123451315.2U
Authority: CN
Inventors: 卢伟志
Original assignee: Guangdong Yide Electric Appliance Co ltd
Current assignee: Guangdong Yide Electric Appliance Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-06-28
Anticipated expiration: 2031-12-31

Abstract

The utility model relates to a circulating washing pump for a dish washing machine, which comprises a heating component, a pump shell and a motor component, wherein a volute chamber is arranged inside the pump shell, the side wall of the volute chamber is provided with a water outlet, an impeller is arranged inside the volute chamber, and the bottom of the volute chamber is provided with a connecting hole and a volute flow passage; the vortex flow passage is communicated with the water outlet; the heating assembly is fixedly arranged above the vortex chamber and is provided with a heating water inlet; the motor assembly is fixedly arranged at the bottom of the pump shell, and a driving shaft of the motor assembly penetrates through the connecting hole and then is in driving connection with the impeller. The structure can effectively avoid the problem that the pressure of water flow is reduced or blocked due to the step height difference, or the fault plane, or the right angle position or the bending position formed between the water outlet and the volute chamber, thereby improving the mobility of water in the volute chamber, ensuring that the dish washing machine has good washing effect, reducing the waste of water resources, saving the water consumption of the dish washing machine, achieving the purposes of energy conservation and environmental protection and reducing the use cost.

Description

Circulating washing pump for dish washing machine

Technical Field

The utility model relates to a technical field of dish washer specifically is a circulating washing pump for dish washer.

Background

Chinese patent No. CN210715278U discloses in 2020 a heating pump casing for a dishwasher, which comprises a pump casing with a water inlet and a water outlet, an electric heating tube connected to an external power supply is inserted into the pump casing, a pressure switch and a temperature-sensitive control device or safety device are arranged on the pump casing, and the pressure switch and the temperature-sensitive control device or safety device are electrically connected to the external power supply. The pump shell of the structure is internally provided with a water flow channel for water to flow, the water flow channel is provided with a step height difference, a right angle position or a bending position when being arranged, the problem that the pressure is reduced or blocked due to the influence of the step height difference, the right angle position or the bending position when water flows in the water flow channel is inevitable, the washing effect of the dish washing machine is poor due to the reduction or the blocking of the water flow pressure, and the waste of water resources is also caused. Therefore, further improvements are necessary.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a circulating washing pump for dish washer to overcome the weak point among the prior art.

The circulating washing pump for the dish washing machine comprises a heating component, a pump shell and a motor component, and is characterized in that: a volute chamber is arranged in the pump shell, a water outlet is formed in the side wall of the volute chamber, an impeller is arranged in the volute chamber, and a connecting hole and a volute flow passage are formed in the bottom of the volute chamber; the vortex flow passage is communicated with the water outlet; the heating assembly is fixedly arranged above the vortex chamber and is provided with a heating water inlet; the motor assembly is fixedly arranged at the bottom of the pump shell, and a driving shaft of the motor assembly penetrates through the connecting hole and then is in driving connection with the impeller.

The vortex flow passage is C-shaped, is integrally formed with the bottom of the pump shell and is spirally arranged along the periphery of the vortex chamber; the vortex chamber is provided with a baffle plate which is positioned on the inner side of the water outlet and is tangent with the inner circle of the vortex flow passage.

The size of the vortex flow channel is reduced along the peripheral circumferential spiral of the vortex chamber; the end part of the maximum size of the vortex flow channel is communicated with the water outlet, and the baffle is tangent to the inner circle of the end part of the maximum size of the vortex flow channel.

The heating assembly comprises a heat conducting disc, a heating element is arranged in the heat conducting disc, the upper part of the heat conducting disc is provided with a buckling part, at least part of the bottom of the heat conducting disc is positioned in the vortex chamber, and the periphery of the heat conducting disc is convexly provided with a heat conducting enhancement part; the pump shell is provided with a buckling matching part, and a sealing element is arranged between the pump shell and the heat conducting disc; the heat conducting disc is rotationally buckled on the buckling matching part through the buckling part and is arranged on the pump shell through the sealing part sealing cover.

Be the arc transition between heat conduction reinforcing portion and the heat conduction dish, be provided with breach portion on the heat conduction reinforcing portion, and communicate with the outlet through breach portion.

One end of the notch part is arranged in an arc shape, and the other end of the notch part is arranged in an angular shape; the size of the vortex flow channel is reduced along the peripheral circumferential spiral of the vortex chamber; the vortex chamber is provided with a baffle plate which is positioned on the inner side of the water outlet and is tangent to the inner circle of the end part with the largest size of the vortex flow passage; the notch part is tangent to the excircle of the end part with the maximum size of the vortex flow passage through the arc-shaped end part, and the notch part is mutually abutted against the rear side of the baffle plate through the angular end part.

The center of the bottom of the heat conducting disc is also provided with a through hole, the upper end of the through hole is communicated with the heating water inlet, and the periphery of the lower end of the through hole is provided with a positioning convex rib; the upper end of the impeller is provided with an impeller water inlet, and the periphery of the impeller water inlet is provided with a positioning flange; the through hole is positioned on the positioning flanging through the positioning convex rib and is communicated with the water inlet of the impeller.

The connecting hole is arranged at the center of the bottom of the vortex chamber, a concave part is arranged on the connecting hole, and a mechanical sealing assembly is arranged through the concave part; the driving shaft penetrates through the connecting hole and the mechanical sealing assembly in sequence and then is in driving connection with the impeller; and a fastener is also arranged between the driving shaft and the impeller and is fastened on the impeller through the upper end of the driving shaft so as to realize the fixed connection between the driving shaft and the impeller.

A detection port is formed in the side wall of the vortex chamber, and a waterless switch seat and a waterless switch are arranged on the detection port; the waterless switch seat is arranged on the detection port, left and right side edges are arranged on the waterless switch seat, clamping parts are respectively arranged on the left and right side edges, and a packaging part is arranged between the clamping parts and the clamping parts; the waterless switch is provided with a clamping matching part, clamped on the upper clamping part through the clamping matching part, and fixed on the waterless switch seat through the packaging part after being clamped.

A flexible piece is arranged between the detection port and the waterless switch base and is in sealing connection with the detection port and the waterless switch base through the flexible piece; a detection hole is formed in the waterless switch base; the packaging part is positioned at the side part of the detection hole and is integrally formed with the left side and the right side respectively; the waterless switch is provided with a trigger part, and the trigger part is positioned on the detection hole.

Water in the vortex chamber acts on the soft piece through the detection port when flowing, and the soft piece deforms towards the direction of the detection hole through the action of water flow and acts on the trigger part so as to realize that the waterless switch carries out waterless detection on the water in the vortex chamber.

The utility model discloses an improvement of above-mentioned structure, compared with the prior art, has following advantage:

1. the vortex flow channel communicated with the water outlet is arranged at the bottom of the vortex chamber, so that the problem of reduction or blockage of water flow pressure caused by step height difference, or fault plane, or right-angle position or bending position formed between the water outlet and the vortex chamber can be effectively solved, the mobility of water in the vortex chamber is improved, the dish washing machine is ensured to have a good washing effect, meanwhile, the waste of water resources is reduced, the water consumption of the dish washing machine is saved, the purposes of energy conservation and environmental protection are achieved, and the use cost is reduced.

2. The heat conduction dish bottom is located the volute at least part, thereby make built-in piece that generates heat can be with heat towards the inside diffusion of pump case, and the peripheral protruding heat conduction reinforcing part that is equipped with in heat conduction dish bottom, heat conduction reinforcing part can increase the area that generates heat of heat conduction dish and water contact, make the heat conduction dish can heat more water, thereby improve the efficiency of generating heat of heat conduction dish, reduce the heat loss of dish washer, further reduce use cost, be provided with the breach portion of crossing with the outlet intercommunication in the heat conduction reinforcing part simultaneously, this breach portion has certain water conservancy diversion effect, can effectively guide impeller exhaust water, and smooth and easy entering outlet, thereby further improve the mobility of water in the volute.

3. The through hole is positioned on the positioning flanging at the upper end of the impeller through the positioning convex rib at the lower end, so that not only can the pump shell, the heat conducting disc and the impeller be accurately positioned and assembled, but also the rotation stability of the impeller can be improved, the shaking problem of the impeller during rotation is reduced, meanwhile, the through hole can be conveniently communicated with the water inlet of the impeller, and water for heating the water inlet can smoothly enter the impeller according to a specified path.

4. The waterless switch can be fixedly assembled on the waterless switch seat by utilizing the clamping cooperation of the clamping cooperation portion and the clamping portion and the positioning effect of the packaging portion, so that the waterless switch is convenient to assemble, and the packaging portion is positioned on the side portion of the detection hole, so that the soft piece deforms towards the direction of the detection hole and acts on the trigger portion, the packaging portion can also effectively position the waterless switch to prevent the waterless switch from displacing on the waterless switch seat and even loosening the waterless switch seat to cause the problem that the waterless switch cannot carry out waterless detection on water in a vortex chamber, thereby improving the assembly stability of the waterless switch, and simultaneously ensuring that the waterless switch can effectively carry out waterless detection on the water in the vortex chamber and improving the use safety of a product.

Drawings

Fig. 1 is a schematic view of an assembly structure according to an embodiment of the present invention.

Fig. 2 is a schematic view of an assembly cross-sectional structure according to an embodiment of the present invention.

Fig. 3 is an enlarged schematic view of a portion a in fig. 2.

Fig. 4 is a schematic view illustrating an exploded structure of a heating assembly, a pump housing, and a motor assembly according to an embodiment of the present invention.

Fig. 5 and 6 are schematic exploded structural views of a pump case, an impeller, a heat conducting plate and a water-free switch according to an embodiment of the present invention.

Fig. 7 is a schematic structural diagram of a pump casing according to an embodiment of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples.

Referring to fig. 1-7, the circulation washing pump for the dish washer comprises a heating assembly, a pump shell 1 and a motor assembly 2, wherein a volute chamber 3 is arranged in the pump shell 1, a water outlet 4 is arranged on the side wall of the volute chamber 3, an impeller 5 is arranged in the volute chamber, and a connecting hole 6 and a volute flow passage 7 are arranged at the bottom of the volute chamber; the vortex flow passage 7 is communicated with the water outlet 4; the heating assembly is fixedly arranged above the vortex chamber 3 and is provided with a heating water inlet 8; the motor component 2 is fixedly arranged at the bottom of the pump shell 1, and a driving shaft 9 of the motor component is in driving connection with the impeller 5 after passing through the connecting hole 6. The water outlet 4 is connected with a water outlet pipe 40, and the heating water inlet 8 is connected with a heating water inlet pipe 80.

The vortex flow channel 7 which is mutually communicated with the water outlet 4 is arranged at the bottom of the vortex chamber 3, so that the problem of reduction or blockage of water flow pressure caused by step height difference, or fault plane, or right-angle position, or bending position formed between the water outlet 4 and the vortex chamber 3 can be effectively avoided, the mobility of water in the vortex chamber 3 is improved, a good washing effect of the dishwasher is ensured, meanwhile, the waste of water resources is reduced, the water consumption of the dishwasher is saved, the purposes of energy conservation and environmental protection are achieved, and the use cost is reduced.

The vortex flow passage 7 is C-shaped, is integrally formed with the bottom of the pump shell 1, and is spirally arranged along the periphery of the vortex chamber 3; the vortex chamber 3 is provided with a baffle plate 10, and the baffle plate 10 is positioned inside the water outlet 4 and is tangent to the inner circle of the vortex flow passage 7.

The size of the vortex flow passage 7 is reduced along the peripheral circumference spiral of the vortex chamber 3; the end part of the largest size of the vortex flow channel 7 is communicated with the water outlet 4, and the baffle plate 10 is tangent to the inner circle of the end part of the largest size of the vortex flow channel 7.

When the impeller 5 rotates, the water in the vortex chamber 3 rotates along with the rotation of the impeller, and because the vortex flow channel 7 is C-shaped and the size of the vortex flow channel is reduced along the peripheral circumferential spiral of the vortex chamber 3, the rotating water can be gradually screwed into the vortex flow channel 7 and enters the water outlet 4, the C-shaped vortex flow channel 7 can enable the water to smoothly flow in the vortex chamber 3, the water pressure is not reduced, the water outlet 4 is not blocked, and the energy consumption is indirectly reduced. The baffle 10 can block the flow direction of water so that the water discharged from the impeller 5 flows in one direction on the scroll flow passage 7, thereby preventing the water from flowing in the scroll chamber 3 and reducing the water pressure.

The heating assembly comprises a heat conducting disc 11, a heating element 12 is arranged in the heat conducting disc 11, a buckling part 13 is arranged at the upper part of the heat conducting disc, at least part of the bottom of the heat conducting disc is positioned in the vortex chamber 3, and a heat conducting reinforcing part 14 is convexly arranged on the periphery of the heat conducting disc; the pump shell 1 is provided with a buckling matching part 15, and a sealing part 16 is arranged between the pump shell and the heat conducting disc 11; the heat conductive plate 11 is rotatably fastened to the fastening engagement portion 15 via the fastening portion 13, and is hermetically sealed to the pump housing 1 via the seal member 16.

The bottom of the heat conduction plate 11 is at least partially positioned in the volute chamber 3, so that the built-in heat generating part 12 can diffuse heat towards the inside of the pump shell 1, the periphery of the bottom of the heat conduction plate 11 is convexly provided with a heat conduction reinforcing part 14, the heat conduction reinforcing part 14 can increase the heating area of the heat conduction plate 11 contacted with water, and the heat conduction plate 11 can heat more water, so that the heating efficiency of the heat conduction plate 11 is improved, the heat loss of the dish washing machine is reduced, and the use cost is further reduced.

The heat conduction reinforcing part 14 and the heat conduction plate 11 are in arc transition, and the heat conduction reinforcing part 14 is provided with a notch part 17 and is communicated with the water outlet 4 through the notch part 17.

One end of the notch part 17 is arranged in an arc shape, and the other end is arranged in an angular shape; breach portion 17 is tangent with the tip excircle of vortex runner 7 maximum size through arc tip, and breach portion 17 has certain water conservancy diversion effect, can effectively guide impeller 5 exhaust water, and smooth and easy entering outlet 4 to further improve the mobility of water in volute chamber 3, breach portion 17 supports each other through angular form tip and baffle 10 rear side and leans on, can carry out effectual support to baffle 1, avoids it because of the too big cracked problem that appears of water pressure.

A through hole 18 is also formed in the center of the bottom of the heat conducting disc 11, the upper end of the through hole 18 is communicated with the heating water inlet 8, and a positioning convex rib 19 is arranged on the periphery of the lower end of the through hole 18; the upper end of the impeller 5 is provided with an impeller water inlet 20, and the periphery of the impeller water inlet 20 is provided with a positioning flange 21; the through hole 18 is positioned on the positioning flange 21 through the positioning convex rib 19 and is communicated with the impeller water inlet 20.

The through hole 18 is positioned on the positioning flange 21 at the upper end of the impeller 5 through the positioning convex rib 19 at the lower end, so that not only can the pump shell 1, the heat conducting disc 11 and the impeller 5 be accurately positioned and assembled, but also the rotation stability of the impeller 5 can be improved, the shaking problem of the impeller during rotation is reduced, meanwhile, the through hole 18 and the impeller water inlet 20 can be conveniently communicated with each other, and water for heating the water inlet 8 can smoothly enter the impeller 5 according to a specified path.

The connection hole 6 is provided at the center of the bottom of the scroll chamber 3 and is provided with a recess 22 thereon, and a mechanical seal assembly 23 is provided through the recess 22; the driving shaft 9 sequentially penetrates through the connecting hole 6 and the mechanical sealing assembly 23 and then is in driving connection with the impeller 5; the mechanical seal assembly 23 includes a bearing, a sealing member, a spring member, etc., which can ensure a sealed connection between the driving shaft 9 and the connecting hole 6, and also can enable the driving shaft 9 to output power to the impeller 5 well.

In order to facilitate the assembly between the driving shaft 9 and the impeller 5, a fastener 24 is further arranged between the driving shaft 9 and the impeller 5, and the fastener 24 is fastened on the impeller 5 through the upper end of the driving shaft 9 to realize the fixed connection between the driving shaft 9 and the impeller 5.

The side wall of the volute chamber 3 is provided with a detection port 25, and the detection port 25 is provided with a waterless switch seat 26 and a waterless switch 27; the waterless switch base 26 is arranged on the detection port 25 and is provided with a left side 28 and a right side 28, the left side 28 and the right side 28 are respectively provided with a clamping part 29, and a packaging part 30 is arranged between the two; the waterless switch 27 is provided with a clamping matching part 34, clamped on the upper clamping part 29 through the clamping matching part 34, and fixed on the waterless switch base 26 through the packaging part 30 after clamping.

A soft piece 31 is arranged between the detection port 25 and the waterless switch base 26, and the detection port 25 and the waterless switch base are hermetically connected through the soft piece 31; the waterless switch base 26 is provided with a detection hole 32; the packaging part 30 is positioned at the side part of the detection hole 32 and is respectively integrated with the left side 28 and the right side 28; the waterless switch 27 is provided with a trigger 33, and the trigger 33 is located on the detection hole 32.

When the water in the vortex chamber 3 flows, the water acts on the flexible piece 31 through the detection port 25, the flexible piece 31 deforms towards the direction of the detection hole 32 under the action of water flow, and acts on the trigger part 33, so that the waterless switch 27 can detect the water in the vortex chamber 3 without water.

By utilizing the clamping cooperation of the clamping cooperation part 30 and the clamping part 29 and the positioning function of the packaging part 30, the anhydrous switch 27 can be fixedly assembled on the anhydrous switch seat 26, which is not only convenient for the assembly of the anhydrous switch 27, but also can effectively position the anhydrous switch 27 when the flexible piece 31 deforms towards the direction of the detection hole 32 and acts on the trigger part 33 because the packaging part 30 is positioned at the side part of the detection hole 32, so as to prevent the anhydrous switch 27 from displacing on the anhydrous switch seat 26 and even loosening the anhydrous switch seat 26, which causes the problem that the anhydrous switch 27 cannot carry out anhydrous detection on the water in the volute chamber 3, thereby improving the assembly stability of the anhydrous switch 27, and simultaneously ensuring that the anhydrous switch 27 can effectively carry out anhydrous detection on the water in the volute chamber 3, and improving the use safety of the product.

The foregoing is a preferred embodiment of the present invention showing and describing the basic principles, main features and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to illustrate the principles of the invention, but rather that various changes and modifications may be made without departing from the spirit and scope of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A circulation washing pump for a dishwasher, comprising a heating assembly, a pump housing (1) and a motor assembly (2), characterized in that: a volute chamber (3) is arranged in the pump shell (1), a water outlet (4) is formed in the side wall of the volute chamber (3), an impeller (5) is arranged in the volute chamber, and a connecting hole (6) and a volute flow passage (7) are formed in the bottom of the volute chamber; the vortex flow passage (7) is communicated with the water outlet (4); the heating assembly is fixedly arranged above the vortex chamber (3) and is provided with a heating water inlet (8); the motor component (2) is fixedly arranged at the bottom of the pump shell (1), and a driving shaft (9) of the motor component penetrates through the connecting hole (6) and then is in driving connection with the impeller (5).

2. A circulation wash pump for a dishwasher according to claim 1, characterized in that: the vortex flow passage (7) is C-shaped, is integrally formed with the bottom of the pump shell (1), and is spirally arranged along the periphery of the vortex chamber (3); a baffle (10) is arranged on the vortex chamber (3), and the baffle (10) is positioned on the inner side of the water outlet (4) and is tangent to the inner circle of the vortex flow channel (7).

3. A circulation wash pump for a dishwasher according to claim 2, characterized in that: the size of the vortex flow passage (7) is reduced along the peripheral circumferential spiral of the vortex chamber (3); the end part of the largest size of the vortex flow channel (7) is communicated with the water outlet (4), and the baffle plate (10) is tangent to the inner circle of the end part of the largest size of the vortex flow channel (7).

4. A circulation wash pump for a dishwasher according to claim 1, characterized in that: the heating assembly comprises a heat conducting disc (11), a heating element (12) is arranged in the heat conducting disc (11), a buckling part (13) is arranged at the upper part of the heat conducting disc, at least part of the bottom of the heat conducting disc is positioned in the vortex chamber (3), and a heat conducting reinforcing part (14) is convexly arranged on the periphery of the heat conducting disc; the pump shell (1) is provided with a buckling matching part (15), and a sealing piece (16) is arranged between the pump shell and the heat conducting disc (11); the heat conducting disc (11) is rotationally buckled on the buckling matching part (15) through the buckling part (13) and is arranged on the pump shell (1) through the sealing part (16) in a sealing way.

5. A circulation washing pump for a dishwasher according to claim 4, characterized in that: the heat conduction reinforcing part (14) and the heat conduction disc (11) are in arc transition, and the heat conduction reinforcing part (14) is provided with a notch part (17) and is communicated with the water outlet (4) through the notch part (17).

6. A circulation washing pump for a dishwasher according to claim 5, characterized in that: one end of the gap part (17) is arranged in an arc shape, and the other end is arranged in an angular shape; the size of the vortex flow passage (7) is reduced along the peripheral circumferential spiral of the vortex chamber (3); a baffle (10) is arranged on the vortex chamber (3), and the baffle (10) is positioned on the inner side of the water outlet (4) and is tangent to the inner circle of the end part with the largest size of the vortex flow channel (7); the notch part (17) is tangent to the excircle of the end part with the maximum size of the vortex flow channel (7) through the arc-shaped end part, and the notch part (17) is abutted against the rear side of the baffle plate (10) through the angular end part.

7. A circulation washing pump for a dishwasher according to claim 4, characterized in that: a through hole (18) is also arranged at the center of the bottom of the heat conducting disc (11), the upper end of the through hole (18) is communicated with the heating water inlet (8), and a positioning convex rib (19) is arranged at the periphery of the lower end; the upper end of the impeller (5) is provided with an impeller water inlet (20), and the periphery of the impeller water inlet (20) is provided with a positioning flanging (21); the through hole (18) is positioned on the positioning flanging (21) through the positioning convex rib (19) and is communicated with the impeller water inlet (20).

8. A circulation wash pump for a dishwasher according to claim 1, characterized in that: the connecting hole (6) is arranged at the center of the bottom of the volute chamber (3), a concave part (22) is arranged on the connecting hole, and a mechanical sealing assembly (23) is arranged through the concave part (22); the driving shaft (9) sequentially penetrates through the connecting hole (6) and the mechanical seal assembly (23) and then is in driving connection with the impeller (5); a fastener (24) is further arranged between the driving shaft (9) and the impeller (5), and the fastener (24) is fastened on the impeller (5) through the upper end of the driving shaft (9) so as to realize the fixed connection between the driving shaft (9) and the impeller (5).

9. A circulation wash pump for a dishwasher according to claim 1, characterized in that: a detection port (25) is formed in the side wall of the vortex chamber (3), and a waterless switch seat (26) and a waterless switch (27) are arranged on the detection port (25); the waterless switch seat (26) is arranged on the detection port (25) and is provided with a left side edge and a right side edge (28), the left side edge and the right side edge (28) are respectively provided with a clamping part (29), and a packaging part (30) is arranged between the two parts; the waterless switch (27) is provided with a clamping matching part (34), clamped on the upper clamping part (29) through the clamping matching part (34), and fixed on the waterless switch seat (26) through the packaging part (30) after being clamped.

10. A circulation washing pump for a dishwasher according to claim 9, characterized in that: a soft piece (31) is arranged between the detection port (25) and the waterless switch base (26), and the detection port and the waterless switch base are hermetically connected through the soft piece (31); a detection hole (32) is arranged on the waterless switch base (26); the packaging part (30) is positioned at the side part of the detection hole (32) and is respectively integrally formed with the left side edge and the right side edge (28); the waterless switch (27) is provided with a trigger part (33), and the trigger part (33) is positioned on the detection hole (32);

when flowing, water in the vortex chamber (3) acts on the flexible piece (31) through the detection port (25), the flexible piece (31) deforms towards the direction of the detection hole (32) under the action of water flow and acts on the trigger part (33), and therefore the water-free switch (27) can conduct water-free detection on the water in the vortex chamber (3).