CN111503053A - Pump and method of operating the same - Google Patents

Abstract

The invention discloses a pump which comprises a pump shell and a heating assembly, wherein the pump shell is provided with a water inlet, a water outlet and a cavity communicated with the water inlet and the water outlet, the pump shell comprises a peripheral wall surrounding the cavity, the heating assembly comprises a heat conduction disc and a heating element, the heat conduction disc is arranged on the peripheral wall of the pump shell, and the heating element is arranged on the outer end face of the heat conduction disc. The axial length of the pump of the present invention is relatively short.

Description

Pump and method of operating the same

Technical Field

The invention relates to the technical field of pumps, in particular to a pump.

Background

Household appliances such as dishwashers often require a power system and a heating system to work in concert to provide power for the media while heating the media. Accordingly, a large space is required to be reserved for each of the electric home appliance systems such as the dishwasher and the heating system.

In the related art, a centrifugal pump and a heater are integrated together to form an integrated heating pump, the integrated heating pump is composed of a motor part, a pump body part, a heating part and the like, and the integrated heating pump is used for providing conveying power for a medium and heating the medium at the same time. However, since the heating portion is mounted at the axial end of the pump body portion in the related art, the axial length of the pump is relatively long.

Disclosure of Invention

To this end, the invention proposes a pump whose axial length is relatively short.

A pump according to an embodiment of the present invention includes a pump case having a water inlet, a water outlet, and a cavity communicating with the water inlet and the water outlet, the pump case including a circumferential wall surrounding the cavity; the heating assembly comprises a heat conduction disc and a heating element, the heat conduction disc is arranged on the peripheral wall of the pump shell, and the heating element is arranged on the outer end face of the heat conduction disc.

According to the pump of the embodiment of the invention, the axial length of the pump can be reduced by arranging the heating assembly on the peripheral wall of the pump shell.

In some embodiments, the pump housing further comprises an end wall connected to one end of the peripheral wall of the pump housing, the water inlet opening is provided in the end wall of the pump housing, and the water outlet opening is provided in the peripheral wall of the pump housing.

In some embodiments, the water outlet and the heat conducting disc are arranged on opposite sides of the peripheral wall of the pump shell, and an included angle between the water outlet and the heat conducting disc is 0-180 °.

In some embodiments, an axial direction of the water outlet is parallel to an axial direction of the heat conductive disk.

In some embodiments, an axial direction of the water inlet and an axial direction of the water outlet are orthogonal to each other.

In some embodiments, a cylindrical member extending from the peripheral wall of the pump housing in a direction away from the peripheral wall of the pump housing is provided on the peripheral wall of the pump housing, an inner cavity of the cylindrical member is communicated with the cavity, and the heat conducting disc is provided at an outer end of the cylindrical member to close the outer end of the inner cavity of the cylindrical member.

In some embodiments, an axial direction of the barrel and an axial direction of the pump casing are orthogonal to each other.

In some embodiments, the pump further comprises a liner mounted within the cavity, an inner cavity of the liner in communication with the cavity, and an inner cavity of the liner in communication with the water inlet.

In some embodiments, the bushing includes a first sleeve body, an annular end wall, a second sleeve body, and a flow deflector, the first sleeve body surrounds a second end of the second sleeve body, an inner cavity of the first sleeve body communicates with the second end of the inner cavity of the second sleeve body, a first end of the inner cavity of the second sleeve body communicates with the water inlet, the annular end wall is disposed at the first end of the first sleeve body, a direction from the first sleeve body to the second sleeve body is a first direction, the annular end wall extends spirally around the second sleeve body along the first direction, an inner circumferential surface of the annular end wall is connected with an outer circumferential surface of the second sleeve body, a spiral start end of the annular end wall, a spiral end of the annular end wall, and a first communication port formed between the first sleeve body and the second sleeve body, the first communication port communicates with the inner cavity of the first sleeve body and the cavity, the flow deflector spirally extends around the second sleeve body along the first direction, the inner circumferential surface of the flow deflector is connected with the outer circumferential surface of the second sleeve body, and the spiral starting end of the flow deflector is adjacent to the spiral tail end of the annular end wall.

In some embodiments, the helical end of the baffle is adjacent the outlet.

Drawings

FIG. 1 is a schematic diagram of the overall construction of a pump according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of a pump according to an embodiment of the invention;

FIG. 3 is an exploded schematic view of a pump according to an embodiment of the present invention;

FIG. 4 is an exploded schematic view of a pump casing and liner according to an embodiment of the present invention;

FIG. 5 is a schematic front view of a bushing according to an embodiment of the invention;

FIG. 6 is a schematic structural view of a bushing according to an embodiment of the invention;

FIG. 7 is a schematic structural view of a bushing according to another embodiment of the invention;

fig. 8 is a schematic structural view of a heating assembly according to an embodiment of the present invention.

Reference numerals:

the heat-conducting type pump comprises a pump shell 1, a cavity 10, a water inlet 11, a water outlet 12, an annular boss 13, a first convex side surface 130, a peripheral wall 14 of the pump shell, an end wall 15 of the pump shell, a cylindrical part 16, a lining 2, a first sleeve body 21, an inner cavity 210 of the first sleeve body, a second convex side surface 211, an annular end wall 22, a second sleeve body 23, an inner cavity 230 of the second sleeve body, a first communication port 201, a second communication port 202, a flow deflector 24, a heating assembly 3, a heat-conducting disc 31, a heating element 32, a temperature controller 33, a fuse 34, a heat-conducting rod 35, a water-dividing disc 4, a mounting column 41, a motor 5, a stator 51, a rotor 52, a motor shaft 53.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention. 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.

As shown in fig. 1 to 8, a pump according to an embodiment of the present invention includes a pump housing 1 and a heating unit 3, wherein the pump housing 1 has an inlet 11 and an outlet 12, the pump housing 1 has a chamber 10 therein communicating with the outlet 12, the pump housing 1 includes a peripheral wall 14 surrounding the chamber 10, and an axial direction of the pump housing 4 is a left-right direction.

As shown in fig. 2, 3 and 8, the heating unit 3 includes a heat conducting plate 31 and a heating element 32, the heat conducting plate 31 is disposed on the peripheral wall 14 of the pump housing 1, and the heating element 32 is disposed on the outer end surface of the heat conducting plate 31 for heating the liquid in the chamber 10. Specifically, as shown in fig. 2, 3 and 8, the heating unit 3 is provided on the front side of the peripheral wall 14 of the pump housing 1, i.e., the rear end surface of the heat conductive plate 31 is connected to the pump housing 1, and the heating element 32 is provided on the front end surface of the heat conductive plate 31.

According to the pump provided by the embodiment of the invention, the heating assembly 3 is arranged on the peripheral wall 14 of the pump shell 1, so that the axial length of the pump can be reduced, the flow field space inside the pump shell 1 is ensured, and the influence of the heating element 32 on the stability of the internal flow field when the heating element is arranged inside the pumping water chamber is avoided. The pump shell 1 has the advantages that the occupied space of the cavity 10 in the pump shell 1 is small, the heat exchange area is large, the heat exchange efficiency is improved on the premise that the flow field in the cavity 10 of the pump shell 1 is not influenced, and the performance of the pump is improved.

In some embodiments, the pump housing 1 further comprises an end wall 15, the end wall 15 of the pump housing 1 is connected to one end of the circumferential wall 14 of the pump housing 1, the water inlet 11 opens in the end wall 15 of the pump housing 1, and the water outlet 12 opens in the circumferential wall of the pump housing 1.

Specifically, as shown in fig. 2, an end wall 15 of the pump housing 1 is connected to the left end of the peripheral wall 14 of the pump housing 1, the end wall 15 being the left end wall of the pump housing 1, and the water inlet 11 is opened in the left end wall of the pump housing 1.

In some embodiments, the water outlet 12 and the heating assembly 3 are disposed on opposite sides of the peripheral wall 14 of the pump housing 1, and the included angle between the water outlet 12 and the heat conducting disc 31 is 0 ° to 180 °. In other words, the water outlet 12 and the heating assembly 3 are both open on the peripheral wall 14 of the pump housing 1, and the water outlet 12 and the heating assembly 3 are located on opposite sides of the peripheral wall 14 of the pump housing 1. For example, the water outlet 12 is opened on the rear side of the peripheral wall 14 of the pump housing 1, and the heating unit 3 is opened on the front side of the peripheral wall 14 of the pump housing 1.

Further, the axial direction of the water outlet 12 is parallel to the axial direction of the heat conductive disk 31.

In some specific embodiments, the axial direction of the water outlet 12 and the axial direction of the water inlet 11 are orthogonal to each other.

In some embodiments, as shown in fig. 1 and 4, a cylindrical member 16 is provided on the peripheral wall 14 of the pump housing 1, the cylindrical member 16 extends from the peripheral wall 14 of the pump housing 1 in a direction away from the peripheral wall 14 of the pump housing 1 (forward direction shown in the figure), the inner cavity of the cylindrical member 16 communicates with the cavity 10, and a heat conductive plate 31 is provided at an outer end of the cylindrical member 16 (front end of the cylindrical member 16 shown in the figure) to close the outer end of the inner cavity of the cylindrical member 16 (front end of the inner cavity of the cylindrical member 16 shown in the figure).

In other words, as shown in fig. 1 and 4, the peripheral wall 14 of the pump housing 1 is open, and a cylinder 16 extending forward is provided at the opening, the rear end of the inner cavity of the cylinder 16 communicates with the chamber 10, and the heat conductive plate 31 is provided at the front end of the cylinder 16 and closes the front end of the inner cavity of the cylinder 16.

Further, the axial direction of the cylindrical member 16 and the axial direction of the pump casing 1 are orthogonal to each other. In other words, the cylindrical member 16 extends in a direction perpendicular to the axial direction of the pump casing 1.

Further, a seal, which may be an O-ring seal, is provided between the thermally conductive disk 31 and the cylindrical member 16, it being understood that the invention is not limited thereto. In other words, as shown in fig. 4, the O-ring is provided between the left end and the heat conductive plate 31.

In some specific embodiments, the heating element 32 is a heating tube. The heating pipe is arranged on the outer end face of the heat conducting disc 31, specifically, the heat conducting disc 31 has a concave part, the opening of the concave part faces outwards (forwards in the figure), the concave part is in a ring shape extending along the circumferential direction of the heat conducting disc 31, the heating pipe is embedded in the ring-shaped concave part of the heat conducting disc 31, and the liquid in the cavity 10 is heated by the heating pipe on the outer end face of the heat conducting disc 31. In other words, as shown in fig. 8, the heat conductive disk 31 has a concave portion that is recessed rearward, and the concave portion is provided along a circumference of the heat conductive disk 31 to form a ring shape in which the heating pipe is provided. It is to be understood that the heating element 32 is provided in a manner that the present invention is not limited thereto.

In some embodiments, as shown in fig. 8, the heating assembly 3 further includes a thermostat 33 and a fuse 34, and the thermostat 33 and the fuse 34 are both disposed on an outer end surface of the heat conductive plate 31 (the front end surface of the heat conductive plate 31 is shown in the figure). Further, the thermostat 33 and the fuse 34 are connected in series with the heating element 32 through the heat conducting rod 35. In other words, the outer end surface of the heat conducting plate 31 is further provided with a thermostat 33, a fuse 34 and a heat conducting rod 35, wherein the thermostat 33 is connected in series with the heating element 32 through one heat conducting rod 35, and the fuse 34 is connected in series with the heating element 32 through one heat conducting rod 35. Specifically, the thermostat 33 and the fuse 34 are fixed to the front end surface of the heat conductive plate 31 by a fixing member, which may be a bolt and a nut, and the present invention is not limited thereto. It can be understood that, by arranging the thermostat 33 and the fuse 34 on the heat conducting plate 31, the temperature can be monitored in real time, and the safety performance is improved. Further, the thermostat 33 and the fuse 34 are disposed in parallel, and the heat conduction rod 35 connecting the thermostat 33 and the heating pipe and the heat conduction rod 35 connecting the fuse 34 and the heating pipe are disposed substantially parallel to each other.

In some embodiments, the pump further comprises a liner 2, the liner 2 being mounted within the cavity 10, the inner cavity of the liner 2 being in communication with the cavity 10, and the inner cavity of the liner 2 being in communication with the water inlet 11. Specifically, the liner 2 and the pump casing 1 are coaxially arranged.

As shown in fig. 4 to 7, the liner 2 includes a first sheath body 21, an annular end wall 22, a second sheath body 23 and a deflector 24, the first sheath body 21 surrounds a second end of the second sheath body 23 (the right end of the second sheath body 23 shown in the figures), an inner cavity 210 of the first sheath body 21 is communicated with an inner cavity 230 of the second sheath body 23, and a first end of the inner cavity 230 of the second sheath body 23 (the left end of the inner cavity 230 of the second sheath body 23 shown in the figures) is communicated with the water inlet 11. In other words, as shown in fig. 5, the right end of the second sleeve body 23 is disposed in the inner cavity 210 of the first sleeve body 21, an annular gap is formed between the outer peripheral surface of the second sleeve body 23 and the inner peripheral surface of the first sleeve body 21, the left end of the second sleeve body 23 is located on the left side of the first sleeve body 21, the right end of the inner cavity 230 of the second sleeve body 23 is communicated with the inner cavity 210 of the first sleeve body 21, and the left end of the inner cavity 230 of the second sleeve body 23 is communicated with the water inlet 11. Specifically, the axial direction of the second sleeve body 23 and the axial direction of the first sleeve body 21 are consistent and extend along the left-right direction. In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Specifically, the cross section of the first sleeve body 21 and the cross section of the second sleeve body 23 are both circular rings, and the diameter of the second sleeve body 23 is smaller than that of the first sleeve body 21.

The annular end wall 22 is disposed at a first end of the first jacket body 21 (a left end of the first jacket body 21 in the drawing), wherein a direction from the first jacket body 21 toward the second jacket body 23 is a first direction, i.e., a direction from right to left in the drawing is a first direction.

The annular end wall 22 extends spirally around the second sleeve body 23 in the first direction, the inner circumferential surface of the annular end wall 22 is connected with the outer circumferential surface of the second sleeve body 23, a first communication port 201 is formed between the spiral start end of the annular end wall 22, the spiral tail end of the annular end wall 22, the first sleeve body 21 and the second sleeve body 23, and the first communication port 201 is communicated with the inner cavity 210 of the first sleeve body 21 and the cavity 10.

In other words, as shown in fig. 5, 7 and 8, the right end face of the annular end wall 22 is connected to the left end face of the first sleeve 21, the annular end wall 22 extends spirally from right to left around the second sleeve 23, and the inner circumferential surface of the annular end wall 22 is connected to the outer circumferential surface of the second sleeve 23, wherein a first communication port 201 for communicating the inner cavity 201 of the first sleeve 21 and the cavity 10 is formed between the spiral start end of the annular end wall 22, the spiral end of the annular end wall 22, the first sleeve 21 and the second sleeve 23.

With regard to the formation of the first communication opening 201, it is understood that, in some specific embodiments, the annular end wall 22 extends spirally from right to left around the second sleeve body 23 and spirals around the second sleeve body 23, that is, the spiral end of the annular end wall 22 is located at the left side of the spiral start of the annular end wall 22, and the first communication opening 201 is one and is formed between the spiral start of the spiral end wall 22, the spiral end of the annular end wall 22, the first sleeve body 21 and the second sleeve body 23. In other specific embodiments, one of the annular end walls 22 extends spirally from right to left around the second jacket body 23 and spirals for a half period around the second jacket body 23, and the other of the annular end walls 22 spirals from the right side of the spiral end of the one of the annular end walls 22 (i.e., the spiral start of the other of the annular end walls 22 is located on the right side of the spiral end of the one of the annular end walls 22) around the second jacket body 23 and spirals for the other half period around the second jacket body 23 such that the spiral end of the other of the annular end walls 22 is located on the left side of the spiral start of the one of the annular end walls 22, and the first communication ports 201 are two, wherein one of the first communication ports 201 is formed at the spiral start of the one of the annular end walls 22, at the spiral end of the other of the annular end wall 22, between the first jacket body 21 and the second jacket body 23, and the other of the first communication, The spiral start of the other annular end wall 22, the first sleeve 21 and the second sleeve 23. Further, the spiral end of the one annular end wall 22 is flush with the spiral end of the other annular end wall 22.

The deflector 24 extends spirally around the second sleeve 23 in the first direction, the inner circumferential surface of the deflector 24 is connected with the outer circumferential surface of the second sleeve 23, and the spiral start end of the deflector 24 is adjacent to the spiral end of the annular end wall 22. In other words, as shown in fig. 5, the baffle 24 extends spirally around the second sleeve body 23 from right to left, the inner circumferential surface of the baffle 24 is connected to the outer circumferential surface of the second sleeve body 23, the spiral start end of the baffle 24 is adjacent to the spiral end of the annular end wall 22, and the baffle 24 is located on the left side of the annular end wall 22. Specifically, the outer peripheral surface of the guide vane 24 is adjacent to the inner peripheral surface of the pump casing 1. Further, the spiral end of the baffle 24 is adjacent to the water outlet 12.

According to the pump provided by the embodiment of the invention, the liner 2 with the spiral annular end wall 22 and the spiral flow deflector 24 is arranged in the pump shell 1, so that the liquid can be guided to flow in the direction when flowing out from the liner 2 and exchange heat with the heating component 3, the volume of water which is directly discharged through the water outlet 12 without being heated by the heating component 3 is effectively reduced, the temperature distribution of the liquid is more uniform, the heating efficiency of the pump is improved, the pressure diffusion is reduced, the change rate of the liquid speed between the heating component 3 and the pump shell 1 is reduced, a certain improvement effect is realized on the vortex of a flow region near the heating component 3, the energy loss in the pump is further reduced, the lift is improved, the effective efficiency is increased, the torque is reduced, the shaft power is reduced, the efficiency of the pump is increased, and the performance of the pump is improved.

In some embodiments, the spiral start of the baffle 24 is connected to the spiral end of the annular end wall 22. It will be appreciated that the invention is not so limited, for example, the helical start of the deflector 24 is not connected to the helical end of the annular end wall 22, as long as the helical start of the deflector 24 is adjacent the helical end of the annular end wall 22.

The spiral diameter of the deflector 24 is smaller than that of the first sleeve body 21. In other words, the outer peripheral surface of the baffle 24 is located inside the outer peripheral surface of the first sleeve body 21, i.e. projected from left to right, and the outer peripheral contour of the baffle 24 is located inside the outer peripheral contour of the first sleeve body 21.

In some embodiments, when there are two annular end walls 22, the two annular end walls 22 are arranged in a central symmetry. The number of the guide vanes 24 is two, and the two guide vanes 24 are arranged in a central symmetry manner. In other words, for example, as shown in fig. 5, a deflector 24 extends spirally leftward around the second jacket body 23 from the spiral end of the annular end wall 22, and spirals half way around the second jacket body 23; another deflector 24 extends spirally leftward around the second jacket body 23 from the spiral end of the other annular end wall 22 and spirals around the second jacket body 23 for the other half of the circumference, and the spiral end of the other deflector 24 is flush with the spiral end of the one deflector 24 so that the one deflector 24 coincides with the other deflector 24 after rotating 180 ° around the axis of the bush 2.

It will be appreciated that the number of annular end walls 22 and baffles 24 is not limited to two, for example, there may be more than two annular end walls 22 and baffles 24, and there may also be one annular end wall 22 and one baffle 24. When the annular end wall 22 and the deflector 24 are both one, the annular end wall 22 may spiral around the first jacket body 21, and the deflector 24 may spiral around the second jacket body 21 from the spiral end of the annular end wall 22.

In some embodiments, the inner surface of the pump casing 1 is provided with an annular boss 13 which is matched with the annular end wall 22, the annular boss 13 spirally extends along the axial direction of the pump casing 1, the annular boss 13 is provided with a first convex side surface 130 which extends along the axial direction of the pump casing 1, the first sleeve body 21 is provided with a second convex side surface 211 which extends along the axial direction of the liner 2 at the spiral starting end or the spiral tail end of the annular end wall 22, and the first convex side surface 130 is abutted with the second convex side surface 211.

In other words, as shown in fig. 4 to 7, the inner surface of the pump casing 1 has a spirally extending annular projection 13, and the annular projection 13 has the same spiral form as the annular end wall 22 so that the annular projection 13 is fitted to the annular end wall 22. The first projecting side 130 of the annular boss 13 extends in the axial direction of the pump casing 1, the first jacket body 21 has a second projecting side 211 extending in the axial direction of the liner 2, and when the annular end wall 22 is one, the second projecting side 211 is one and is formed between the spiral start of the annular end wall 22 and the spiral end of the annular end wall 22; in the case where the annular end wall 22 has two, one second projecting side 211 is formed between the spiral start of one annular end wall 22 and the spiral end of the other annular end wall 22, and the other second projecting side 211 is formed between the spiral end of one annular end wall 22 and the spiral start of the other annular end wall 22.

It will be understood that when there is one annular end wall 22 and one second convex side 211, there is one first convex side 130, the first convex side 130 abutting the second convex side 211; when the number of the annular end walls 22 is two and the number of the second convex side surfaces 211 is two, the number of the first convex side surfaces 130 is two, one first convex side surface 130 is attached to one second convex side surface 211, and the other first convex side surface 130 is attached to the other second convex side surface 211.

According to the pump of the embodiment of the invention, the first convex side surface 130 on the inner surface of the pump shell 1 is jointed with the second convex side surface 211 on the first sleeve body 21, so that the installation position of the liner 2 in the pump shell 1 can be determined, and the energy loss of the liquid flowing out of the water outlet of the impeller 6 in the process of entering the cavity 10 through the liner 2, exchanging heat with the heating assembly 3 and then flowing out of the cavity 10 is small.

In some embodiments, as shown in fig. 7, the spiral beginning of the annular end wall 22 is provided with a second communication port 202, and the second communication port 202 communicates the inner cavity 210 of the first sheath body 21 and the cavity 10. Therefore, by forming the second communication port 202, the area of the communication port between the inner cavity 210 of the first sleeve body 21 and the cavity 10, that is, the area of the water outlet of the liner 2 can be increased, so as to avoid the problems of energy loss and large local pressure generated at the water outlet of the liner 2 by the water flow due to the over-small area of the water outlet of the liner 2.

In some embodiments, the distance between the annular end wall 22 and the baffle 24 varies uniformly or gradually increasing along the direction of helical extension of the annular end wall 22. In other words, the distance between the annular end wall 22 and the guide vanes 24 may be variable or constant along the spiral extension of the annular end wall 22, wherein, when varying, the distance gradually increases along the spiral extension of the annular end wall 22, so that the energy loss is smaller and the speed transition is smoother.

In some embodiments, as shown in fig. 2, the pump further includes a water diversion disc 4, the water diversion disc 4 is disposed at the right end of the pump housing 1 to close the right end of the cavity 10, a mounting column 41 extending rightward is disposed on the right end face of the water diversion disc 4, a barb is disposed at the right end of the mounting column 41, and a connecting device on the dishwasher can be connected by means of mutual fastening, wherein the connecting device can be made of rubber or the like. Therefore, the stability of the whole structure can be improved, and the vibration noise generated during the operation of the dish washing machine is reduced.

In some embodiments, the pump further comprises a driving assembly having one end disposed in the inner cavity 210 of the first casing 21 for driving the liquid to flow from the inlet 11 into the chamber 10 and through the inner cavity of the liner 2 into the outlet 12 and out through the outlet 12, wherein the deflector 24 is for guiding the liquid towards a position adjacent to the heating assembly 3.

Specifically, the driving assembly includes a motor 5 and an impeller 6, the impeller 6 is disposed in the inner cavity 210 of the first sleeve 21 and connected to the motor 5, and the motor 5 drives the impeller 6 to rotate.

Further, the motor 5 includes a stator 51 and a rotor 52, the rotor 52 is disposed in the water diversion disc 4, the stator 51 is disposed outside the water diversion disc 4 and is disposed at the periphery of the rotor 52 to form a magnetic force, it can be understood that the rotor 52 is disposed inside the water diversion disc 4, the motor 5 can be cooled by water in the pump, and the cooling efficiency of the motor 5 is improved. Further, as shown in fig. 2, a motor shaft 53 which extends axially and is rotatable is disposed in the middle of the motor 5, the right end of the motor shaft 53 is located in the water distribution disk 4 and is connected with the rotor 52, the left end of the motor shaft 53 extends out of the water distribution disk 4 and is located on the left side of the water distribution disk 4, and a motor cover 54 is further disposed at the right end of the motor 5.

The impeller 6 is connected to the rotor 52. Specifically, as shown in fig. 2, the left end of the motor shaft 53 is connected to the impeller 6 to realize the connection of the rotor 52 to the impeller 6. The impeller 6 is driven to rotate by the motor shaft 53 of the motor 5, so that the impeller 6 drives the water flow in the pump 100 to rotate and the impeller 6 applies work to the water flow, so that the water flow is energized and flows out.

A pump according to an embodiment of the present invention will be described with reference to fig. 1-8.

As shown in fig. 1 to 8, a pump according to an embodiment of the present invention includes a pump housing 1, a liner 2, a heating assembly 3, a water distribution disk 4, a motor 5, and an impeller 6.

The pump shell 1 is provided with a cavity 10, the pump shell 1 comprises a peripheral wall 14 surrounding the cavity 10 and an end wall 15 connected with the left end of the peripheral wall 14 of the pump shell 1, wherein the end wall 15 of the pump shell 1 is provided with a water inlet 1 extending leftwards, the rear side of the peripheral wall 14 of the pump shell 1 is provided with a water outlet 12 extending backwards, and the axial direction of the water outlet 12 and the axial direction of the water inlet 11 are orthogonal to each other. The front side of the peripheral wall 14 of the pump housing 1 is open, and the opening is provided with a cylinder 16 extending forward, the axial direction of the cylinder 16 and the axial direction of the pump housing 1 are orthogonal to each other, and the front end of the cylinder 16 is provided with the heating assembly 3.

The bushing 2 is installed in the cavity 10 and is coaxially arranged with the pump shell 1, the bushing 2 comprises a first sleeve body 21, two annular end walls 22, a second sleeve body 23 and two flow deflectors 24, the cross section of the first sleeve body 21 and the cross section of the second sleeve body 23 are both circular rings, the axial direction of the second sleeve body 23 is consistent with the axial direction of the first sleeve body 21, the right end of the second sleeve body 23 is connected with the left end of the first sleeve body 21, and the diameter of the second sleeve body 23 is smaller than that of the first sleeve body 21.

The right end of the second sleeve body 23 is arranged in the inner cavity 210 of the first sleeve body 21, an annular gap is formed between the outer peripheral surface of the second sleeve body 23 and the inner peripheral surface of the first sleeve body 21, the left end of the second sleeve body 23 is positioned on the left side of the first sleeve body 21, the right end of the inner cavity 230 of the second sleeve body 23 is communicated with the inner cavity 210 of the first sleeve body 21, and the left end of the inner cavity 230 of the second sleeve body 23 is communicated with the water inlet 11.

The right end face of the annular end wall 22 is connected to the left end face of the first sleeve 21, one of the annular end walls 22 extends spirally from right to left around the second sleeve 23 and spirals for a half turn around the second sleeve 23, and the other annular end wall 22 spirals from the right side of the spiral end of the one annular end wall 22 (i.e., the spiral start of the other annular end wall 22 is located on the right side of the spiral end of the one annular end wall 22) around the second sleeve 23 to the left and spirals for the other half turn around the second sleeve 23 so that the spiral end of the other annular end wall 22 is located on the left side of the spiral start of the one annular end wall 22. And the spiral end of the one annular end wall 22 is flush with the spiral end of the other annular end wall 22. The inner peripheral surface of each annular end wall 22 is connected to the outer peripheral surface of the second sleeve body 23, and the two annular end walls 22 are arranged in central symmetry.

The number of the first communication ports 201 is two, one of the first communication ports 201 is formed between the spiral start of the one annular end wall 22, the spiral end of the other annular end wall 22, the first jacket body 21 and the second jacket body 23, and the other first communication port 201 is formed between the spiral end of the one annular end wall 22, the spiral start of the other annular end wall 22, the first jacket body 21 and the second jacket body 23.

The spiral starting end of the annular end wall 22 is provided with a second communication port 202, and the second communication port 202 is communicated with the inner cavity 210 of the first sleeve body 21 and the cavity 10. Therefore, by forming the second communication port 202, the area of the communication port between the inner cavity 210 of the first sleeve body 21 and the cavity 10, that is, the area of the water outlet of the liner 2 can be increased, so as to avoid the problems of energy loss and large local pressure generated at the water outlet of the liner 2 by the water flow due to the over-small area of the water outlet of the liner 2.

Of the two deflectors 24, one deflector 24 extends spirally leftward around the second sleeve body 23 from the spiral end of the one annular end wall 22, and spirals half way around the second sleeve body 23; another baffle 24 extends spirally leftwards from the spiral end of the another annular end wall 22 around the second sleeve body 23 and spirals for the other half circle around the second sleeve body 23, the spiral end of the another baffle 24 is flush with the spiral end of the one baffle 24, the two baffles 24 are arranged in central symmetry, and the spiral end of the baffle 24 is adjacent to the water outlet 12.

The distance between the annular end wall 22 and the guide vanes 24 changes gradually and increasingly in the direction of the helical extension of the annular end wall 22.

The inner surface of the pump casing 1 has a spirally extending annular projection 13, and the annular projection 13 has the same spiral form as the annular end wall 22, the annular projection 13 has two first convex side surfaces 130 extending in the axial direction of the pump casing 1, one second convex side surface 211 is formed between the spiral start of one annular end wall 22 and the spiral end of the other annular end wall 22, the other second convex side surface 211 is formed between the spiral end of one annular end wall 22 and the spiral start of the other annular end wall 22, one first convex side surface 130 abuts one second convex side surface 211, and the other first convex side surface 130 abuts the other second convex side surface 211. Therefore, the installation position of the liner 2 in the pump shell 1 can be determined, so that the liquid flowing out of the water outlet of the impeller 6 is ensured to have less energy loss in the process of entering the cavity 10 through the liner 2 to exchange heat with the heating assembly 3 and then flowing out of the cavity 10.

The heating component 3 comprises a heat conducting disc 31, a heating element 32, a temperature controller 33, a fuse 34 and two heat conducting rods 35, the heat conducting disc 31 is arranged on the front end face of the cylindrical part 16, the axial direction of the heat conducting disc 31 is parallel to the axial direction of the water outlet 12, the heating element 32, the temperature controller 33 and the fuse 34 are arranged on the front end face of the heat conducting disc 31, the temperature controller 33 is connected with the heating element 32 in series through one heat conducting rod 35, and the fuse 34 is connected with the heating element 32 in series through one heat conducting rod 35. The thermostat 33 and the fuse 34 are arranged in parallel, and the heat conduction rod 35 connecting the thermostat 33 and the heating pipe and the heat conduction rod 35 connecting the fuse 34 and the heating pipe are arranged substantially parallel to each other.

The heating element 32 is a heating tube. The heating pipe is arranged on the front end face of the heat conducting disc 31, specifically, the heat conducting disc 31 has a concave part with an opening facing forward, the concave part is in an annular shape extending along the circumferential direction of the heat conducting disc 31, the heating pipe is embedded in the annular concave part of the heat conducting disc 31, and the liquid in the cavity 10 is heated by the heating pipe on the outer end face of the heat conducting disc 31. In other words, as shown in fig. 8, the heat conductive disk 31 has a concave portion that is recessed rearward, and the concave portion is provided along a circumference of the heat conductive disk 31 to form a ring shape in which the heating pipe is provided. An O-ring seal is provided between the heat conducting disc 31 and the cylindrical member 16.

The water diversion disc 4 is arranged at the right end of the pump shell 1 to close the right end of the cavity 10, and an O-shaped sealing ring is arranged between the water diversion disc 4 and the pump shell 1 as shown in figure 2.

The motor 5 comprises a stator 51 and a rotor 52, the rotor 52 is arranged in the water diversion disc 4, the stator 51 is positioned outside the water diversion disc 4 and is arranged on the periphery of the rotor 52 to form magnetic force. The middle part of the motor 5 is provided with a motor shaft 53 which extends along the axial direction and can rotate, as shown in fig. 2, the right end of the motor 5 at the right end of the motor shaft 53 is connected with the rotor 52, the right end of the motor shaft 53 of the motor 5 is positioned in the water distribution disc 4, the left end of the motor shaft 53 extends out of the water distribution disc 4 and is positioned at the left side of the water distribution disc 4, and the right end of the motor 5 is also provided with a motor cover 54. The impeller 6 is arranged in the inner cavity 210 of the first sleeve body 21 of the bushing 2 and connected with the left end of the motor shaft 53. In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (10)

1. A pump, comprising:

the pump comprises a pump shell, a water inlet, a water outlet and a cavity communicated with the water inlet and the water outlet, wherein the pump shell comprises a peripheral wall surrounding the cavity;

the heating assembly comprises a heat conduction disc and a heating element, the heat conduction disc is arranged on the peripheral wall of the pump shell, and the heating element is arranged on the outer end face of the heat conduction disc.

2. The pump of claim 1, wherein the pump housing further comprises an end wall connected to one end of the peripheral wall of the pump housing, the water inlet opening being provided in the end wall of the pump housing, and the water outlet opening being provided in the peripheral wall of the pump housing.

3. The pump of claim 2, wherein the water outlet and the heat conducting disc are disposed on opposite sides of a peripheral wall of the pump housing, and an included angle between the water outlet and the heat conducting disc is 0 ° to 180 °.

4. The pump of claim 3, wherein an axial direction of the water outlet is parallel to an axial direction of the heat conductive disk.

5. The pump of claim 1, wherein an axial direction of the water inlet and an axial direction of the water outlet are orthogonal to each other.

6. The pump of claim 1, wherein a cylindrical member is provided on the peripheral wall of the pump housing to extend from the peripheral wall of the pump housing in a direction away from the peripheral wall of the pump housing, an inner cavity of the cylindrical member is communicated with the cavity, and the heat conductive plate is provided at an outer end of the cylindrical member to close an outer end of the inner cavity of the cylindrical member.

7. The pump of claim 6, wherein an axial direction of the barrel and an axial direction of the pump casing are orthogonal to each other.

8. The pump of any one of claims 1-7, further comprising a liner mounted within the cavity, the liner having an inner cavity in communication with the cavity, the liner inner cavity in communication with the water inlet.

9. The pump of claim 8, wherein the bushing comprises a first sleeve body, an annular end wall, a second sleeve body and a baffle, the first sleeve body surrounds the second end of the second sleeve body, the inner cavity of the first sleeve body is communicated with the second end of the inner cavity of the second sleeve body, the first end of the inner cavity of the second sleeve body is communicated with the water inlet, the annular end wall is arranged at the first end of the first sleeve body, the direction from the first sleeve body to the second sleeve body is a first direction, the annular end wall spirally extends around the second sleeve body along the first direction, the inner circumferential surface of the annular end wall is connected with the outer circumferential surface of the second sleeve body, a spiral starting end of the annular end wall, a spiral tail end of the annular end wall, and a first communication port formed between the first sleeve body and the second sleeve body are communicated with the inner cavity of the first sleeve body and the cavity, the flow deflector spirally extends around the second sleeve body along the first direction, the inner circumferential surface of the flow deflector is connected with the outer circumferential surface of the second sleeve body, and the spiral starting end of the flow deflector is adjacent to the spiral tail end of the annular end wall.

10. The pump of claim 9, wherein the helical end of the baffle is adjacent the outlet port.

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