CN113513481A

CN113513481A - Heat collection pump and dish washing machine thereof

Info

Publication number: CN113513481A
Application number: CN202010279984.7A
Authority: CN
Inventors: 闫洪辉; 黄彩胜
Original assignee: Foshan Best Electrical Appliance Technology Co Ltd
Current assignee: Foshan Best Electrical Appliance Technology Co Ltd
Priority date: 2020-04-10
Filing date: 2020-04-10
Publication date: 2021-10-19

Abstract

The application belongs to the technical field of dish washing machines, and provides a heat collection pump and a dish washing machine thereof, which comprise a pump body and a motor, wherein the pump body comprises an upper pump shell and a lower pump shell, and the upper pump shell and the lower pump shell are spliced to form a first energy collection cavity; a heating pipe and an impeller are arranged in the pump body, the impeller is connected with a motor and rotates in the first energy-gathering cavity to generate hydrodynamics; the lower pump shell is provided with a surrounding rib arranged around the periphery of the impeller, and a flow guide gap is arranged between the surrounding rib and the impeller; the pump body is provided with a water outlet pipe, and the surrounding rib is provided with a water outlet communicated with the water outlet pipe; the two sides of the water outlet of the surrounding rib are respectively provided with a first end part and a second end part, the lower pump shell is provided with a limiting part, and the limiting part is abutted between the first end part and the inner wall of the pump body so as to enable the first end part to be shifted upwards towards the impeller; the distance between the inner wall of the surrounding rib and the periphery of the impeller is gradually increased from the first end part to the second end part. This application is improved the heat collection pump structure, lets the water route stroke in the pump body shorten, increases the lift of the pump body, improves the hydraulic efficiency of the pump body.

Description

Heat collection pump and dish washing machine thereof

Technical Field

The application belongs to the technical field of dish washing machines, and particularly relates to a heat collecting pump and a dish washing machine with the same.

Background

With the increasing development of science and technology and the improvement of living standard, especially with the rapid development of household appliance technology, a special dish washing device is provided for the aspect of tableware cleaning. A multifunctional dish washing machine generally has the functions of spraying, drying, sterilizing and the like, a user only needs to put tableware such as bowls and chopsticks into the dish washing machine, the dish washing machine can automatically complete a series of cleaning works according to the setting of the user, the use is convenient and full-automatic, the operation of the user is effectively reduced, and therefore the dish washing machine is more and more popularized in thousands of households and is deeply loved by the majority of users.

The dishwasher in the prior art generally has a spraying device, which includes a washing pump and a spray arm disposed in the dishwasher, and the spray arm is driven to rotate by the water flow generated by the washing pump and having pressure, so that the water flow is sprayed to the dishes through spray holes on the spray arm, thereby achieving the purpose of cleaning. The pressure of the water jet of the jet holes is directly related to the performance of the washing pump, wherein the hydraulic efficiency of the washing pump is high and low, and the washing pump has great influence on the washing of the dishwasher. When the lift of the washing pump is small, the washing is poor; if the lift is large, the dishwasher is relatively well cleaned. In addition, the dishwasher has a small internal space, occupies a large internal space of the machine using a flow-through heating device, and has a low heating efficiency due to poor heat conduction. Therefore, dish washer manufacturers on the market currently develop heat collection pumps with heating and hydrodynamic properties.

The heat collecting pump in the prior art integrates the heating pipe and the washing pump, and although the heat collecting pump has the functions of heating and pumping water, the hydraulic efficiency of the washing pump is low due to the fact that the shape of a pump shell is limited by the heating pipe. Therefore, in the prior art, a separated structure is arranged above the impeller of the pump body, so that a heating part and a water pumping part in the pump body are separated from each other, and the washing pump has sufficient lift to solve the problem of insufficient water power. However, this method will increase the cost, and the pump housing cannot be integrally formed, so that the hydraulic efficiency of the washing pump is still not high, and the washing value of the dishwasher is still to be improved.

Disclosure of Invention

An object of the embodiment of the application is to provide a heat collection pump and a dish washing machine thereof, which improve the integral structure of the heat collection pump, shorten the water path stroke in a pump body, effectively increase the pump lift of the pump body and improve the hydraulic efficiency of the pump body.

In order to achieve the purpose, the technical scheme adopted by the application is as follows: the heat collecting pump comprises a pump body and a motor, wherein the pump body comprises an upper pump shell and a lower pump shell, and the upper pump shell and the lower pump shell are spliced to form a first energy collecting cavity; a heating pipe and an impeller are arranged in the pump body, the impeller is connected with the motor and rotates in the first energy-gathering cavity to generate hydrodynamics; the lower pump shell is provided with a surrounding rib arranged around the periphery of the impeller, and a flow guide gap is arranged between the surrounding rib and the impeller; the pump body is provided with a water outlet pipe, and the surrounding rib is provided with a water outlet communicated with the water outlet pipe; the water outlet is provided with a water outlet, the water outlet is provided with a water outlet, and a water outlet, the water outlet is provided with a water outlet, and a water outlet pipe is arranged on the water outlet, and a water outlet, wherein a water outlet is arranged on the water outlet, and a water outlet is arranged between the water outlet, and a water outlet is arranged on the water outlet, and a water outlet, wherein a water outlet is arranged between the water outlet is abutted between the water outlet is arranged between the water outlet is abutted between the water outlet, and a water outlet is arranged on the water outlet is abutted between the water outlet is arranged on the water outlet is arranged between the water outlet, and a lower pump body and a water outlet, and a water outlet; the distance between the inner wall of the surrounding rib and the periphery of the impeller is gradually increased from the first end part to the second end part.

The application provides a heat collection pump's beneficial effect lies in: compared with the prior art, the washing pump and the heating pipe are integrated into a whole to form the heat collection pump with the heating and water pumping functions, the lower pump shell is provided with the surrounding rib for increasing the characteristics of the volute, the surrounding rib is arranged around the periphery of the impeller, and a flow guide gap is formed between the surrounding rib and the periphery of the impeller, so that an effective flow guide effect is achieved. Because the lower pump shell is provided with the limiting part, the limiting part is abutted between the first end part of the surrounding rib and the inner wall of the pump body, so that the first end part is deviated to the periphery of the impeller, and the distance between the first end part and the periphery of the impeller is reduced. Let the interval between the inner wall of whole enclose muscle and the periphery of impeller from first end gradually increases the setting to the direction of second end to the water conservancy diversion clearance between messenger encloses muscle and the impeller forms from narrow to wide crescent change. When the impeller rotates to operate, the centrifugal power generated by the rotation of the impeller throws water out to the peripheral side, the water is converted from kinetic energy to potential energy, and under the action of the surrounding rib flow guide, the flow guide gap is gradually increased from narrow to wide, so that the hydrodynamic force is gradually enhanced, the lift of the pump body is increased, and the hydraulic efficiency is improved.

In addition, the heat collection pump of this application compares with the heat collection pump that prior art has the separator, because the separator that the heat collection pump set up keeps apart heating pipe and impeller, lets the inside heating chamber that has the heating pipe of formation of heat collection pump and the power cavity that has the impeller for rivers heat in the heating chamber after getting into the pump body, and the reentrant power cavity promotes power, so that heat and the function that produces power go on in proper order. The heat collection pump with the structure increases the internal waterway stroke of the pump body, causes serious loss of heat energy and water power, and has low working efficiency. The utility model provides a heat collection pump forms a first energy chamber through last pump case and the concatenation of pump case down, sets up heating tube and impeller simultaneously in first energy chamber, and the outlet pipe of the pump body and the delivery port intercommunication of enclosing the muscle let whole water route stroke shorten. When the impeller generates hydrodynamic force, the hydrodynamic force can be directly guided to the water outlet along the surrounding ribs and is timely output from the water outlet pipe, and the hydrodynamic force loss is effectively reduced. For the heating performance of the pump body, on one hand, the heating pipe is used for heating water flow entering the pump body; on the other hand, the surrounding rib is of an open structure and is communicated with the whole first energy-gathering cavity while playing a role in guiding flow, so that the water flow is accelerated and gradually increased under the driving of the power of the matching of the impeller and the surrounding rib, and in the process of water flow rotation, heat on the heating pipe is taken away, the heat loss is effectively reduced, and the working efficiency of the pump body is improved.

The structure of the pump body is improved, the upper pump shell is provided with a water inlet pipe and a flow guide pipe communicated with the water inlet pipe, the flow guide pipe extends towards the impeller, and the heating pipe is provided with a heating ring arranged around the periphery of the flow guide pipe; the impeller is provided with a suction pipe which is sleeved with the flow guide pipe, and a movable gap is arranged between the inner wall of the suction pipe and the outer wall of the flow guide pipe. The guide pipe is connected with the impeller to form an internal water flow channel, and water flow enters the internal water flow channel firstly and then enters the first energy collecting cavity from the periphery of the impeller. The heating ring of the heating tube heats the inside of the flow guide tube and is arranged in the first energy collecting cavity to lead water flow to take away heat, thereby effectively improving the utilization rate of heat energy and reducing heat loss. On the basis, a movable gap is arranged between the inner wall of the suction pipe and the outer wall of the flow guide pipe, so that water tension is formed. Not only the impeller can rotate, but also the water outside the draft tube can be prevented from flowing back to the impeller, and the power loss is avoided.

Optionally, the upper pump casing is wrapped around the surrounding rib, and a sealing ring is arranged between the upper pump casing and the surrounding rib; the limiting piece is a lower isolating tongue arranged on the first end part, and the lower isolating tongue extends towards the inner wall of the upper pump shell and is abutted against the inner wall of the upper pump shell; the upper pump shell is also provided with an upper baffle which is vertically spliced with the lower baffle, and an isolation gap is arranged between the upper baffle and the heating ring and is adjacent to the pipe orifice of the water outlet pipe. On one hand, the surrounding rib is coated from the periphery by utilizing the upper pump shell, and the sealing ring is arranged between the upper pump shell and the surrounding rib, so that the sealing performance is improved. On the other hand, the limiting piece is arranged on the first end part and is a lower isolating tongue extending towards the inner wall of the upper pump shell, and the lower isolating tongue is abutted against the inner wall of the upper pump shell so as to reduce the distance between the first end part and the periphery of the impeller. Due to the arrangement of the lower partition tongue, a water retaining groove is formed in the pump body above the lower partition tongue, and when water flow of the pump body flows through the water retaining groove, power loss is easily caused under the blocking and limiting of the water retaining groove. Therefore, the upper pump shell above the lower partition tongue is provided with the upper partition tongue, the upper partition tongue and the lower partition tongue are spliced up and down, and the water retaining groove above the lower partition tongue is filled by the upper partition tongue. And the upper isolating tongue and the heating ring form an isolating gap and are arranged adjacent to the pipe orifice of the water outlet pipe, so that the water outlet pipe is not blocked, water flow can flow on the isolating gap in a rotating mode, heat of the heating ring is taken away, and power loss and heat energy loss are effectively reduced.

The structure of the impeller is improved, the impeller is provided with a plurality of blades which are bent towards the same direction, and the plurality of blades are annularly arranged on the impeller; the impeller is also provided with a plurality of flow passages which are formed by dividing the plurality of blades, and each flow passage is communicated with the suction pipe; the width of the flow channel is gradually increased from the inside of the impeller to the periphery, and/or the height of the flow channel is gradually decreased from the inside of the impeller to the periphery. Firstly, the blades arranged on the impeller in a ring shape are bent towards the same direction, so that a water passing channel of the impeller forms a vortex structure, and hydrodynamic force is promoted. Secondly, the impeller is separated by the blades to form a plurality of water passing flow channels, so that water flow entering the impeller from the suction pipe is dispersed and thrown out of the periphery of the impeller through the flow channels, centrifugal power is enhanced, and hydrodynamic force is effectively improved. And the gradual change setting of width and height of combining the runner to form the structure that strengthens water pressure gradually, improve hydraulic efficiency effectively.

Optionally, a through hole is formed in the center of the lower pump shell, a driving shaft is arranged on the motor, and the driving shaft extends into the pump body from the through hole and is connected with the impeller; the driving shaft is provided with a stud, and the center of the impeller is provided with a screw hole sleeved with the stud. The screw hole can be preferably a copper screw hole, can be integrally formed in the injection molding manufacture of the impeller, is beneficial to enhancing the fixing effect of the connection with the driving shaft of the motor, effectively improves the concentricity of the screw hole and the driving shaft of the motor, and enables the impeller to rotate more stably.

Optionally, the bottom of the impeller is provided with a plurality of vent holes for balancing air pressure, and the plurality of vent holes are arranged around the periphery of the screw hole of the impeller. In the rotation process of the impeller, because a pressure difference is easy to exist between the upper part and the lower part of the impeller, the impeller is easy to be unstable and generate noise in the rotation process. Therefore, the bottom of the impeller is provided with the vent hole for balancing air pressure, so that the pressure difference between the upper part and the lower part of the impeller is balanced, the rotation stability of the impeller is effectively improved, and the effective noise reduction effect is achieved.

Optionally, the bottom of impeller still is equipped with around the annular air channel that the screw set up, a plurality of air vents equipartition in on the annular air channel to the row's of increase impeller bottom presses the space, is favorable to improving pressure balance effect.

Optionally, a clearance groove communicated with the through hole is formed in the center of the lower pump shell, the clearance groove is matched with the annular vent groove of the impeller in position, and a sealing element arranged around the periphery of the driving shaft is arranged in the clearance groove of the lower pump shell. On one hand, the clearance groove of the lower pump shell is internally provided with a sealing element, and the sealing element can be preferably a sealing ring arranged around the periphery of the driving shaft, so that the function of sealing the through hole is realized, the seepage of water liquid is limited, the concentricity of the driving shaft extending into the pump body and connected with the impeller can be kept, and the rotating stability of the impeller is ensured. On the other hand, the clearance groove is matched with the annular ventilating groove of the impeller to form a clearance space, so that the rotation of the impeller is not blocked, and the rotation operation is smoother.

The assembly structure of the pump body is improved, a convex edge is arranged on the periphery of the lower pump shell, a plurality of hooks are arranged on the convex edge, and a plurality of buckle blocks matched with the hooks in position are arranged on the upper pump shell; the convex edge of the lower pump shell is also provided with a positioning bulge, and the upper pump shell is provided with a positioning lug which is used for abutting against the positioning bulge. The buckling block of the upper pump shell and the buckling hook of the lower pump shell are mutually buckled and matched, so that the upper pump shell and the lower pump shell can be assembled to form a screwing structure. And the lower pump shell is provided with a positioning bulge and the upper pump shell is provided with a positioning lug in combination with the assembly mode of the turnbuckle, so that a limiting structure is formed to limit the fixed state after the upper pump shell and the lower pump shell are spliced, the heating tube, the impeller and the surrounding rib in the pump body are installed in place, the corresponding working effect of each part combination is realized, and the assembly accuracy of the parts in the pump body is effectively improved.

The application also provides a dish washing machine, which comprises a spraying device, wherein the spraying device comprises a spraying arm and the heat collecting pump, and the heat collecting pump is connected with the spraying arm through a pipeline; the middle part of the spray arm is provided with a water delivery pipe connected with a pipeline, the spray arm is provided with a plurality of water spray holes, and the plurality of water spray holes are uniformly and symmetrically distributed from the middle part of the spray arm to two ends of the spray arm and are consistent in quantity; the inside of spray arm is equipped with the second energy concentrating chamber that is used for the water, second energy concentrating chamber and the hole for water spraying intercommunication on the spray arm, just the cross sectional area in second energy concentrating chamber reduces the setting gradually from the middle part of spray arm to the both ends of spray arm. Let the hydrodynamic force that the heat-collecting pump produced get into the second energy gathering chamber in the spray arm from the raceway of spray arm through the pipeline, because the second energy gathering chamber reduces the setting for following spray arm middle part to spray arm both ends gradually to make and be located spray arm middle part cavity width great and extend the gradual change and reduce to spray arm's both ends, thereby form effectual pressure boost structure. The kinetic energy of water flow in the spray arm is converted into potential energy for the second time, and the potential energy is output to the water spraying holes at the two ends of the spray arm, so that the water outlet pressure is effectively kept, the water is favorably sprayed to tableware for cleaning, and the cleaning effect is improved. Wherein, the hole for water spraying on the spray arm evenly distributes and the quantity is unanimous from the middle part of spray arm to both ends to make the spray arm keep balanced rotation under hydrodynamic drive, improve the washing effect effectively.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

FIG. 1 is a schematic perspective view illustrating a heat collecting pump according to an embodiment of the present disclosure;

FIG. 2 is a schematic diagram illustrating an exploded structure of a heat collection pump according to an embodiment of the present application;

FIG. 3 is a first schematic view illustrating an internal structure of a heat collecting pump according to an embodiment of the present application;

FIG. 4 is a cross-sectional view A-A of FIG. 1;

FIG. 5 is a cross-sectional view B-B of FIG. 1;

FIG. 6 is a schematic view illustrating an internal structure of a heat collecting pump according to an embodiment of the present application;

FIG. 7 is a first schematic perspective view illustrating an impeller of a heat collection pump according to an embodiment of the present disclosure;

FIG. 8 is a first schematic view illustrating an internal structure of an impeller of a heat collection pump according to an embodiment of the present application;

FIG. 9 is a schematic view illustrating an internal structure of an impeller of a heat collection pump according to an embodiment of the present application;

FIG. 10 is a schematic perspective view illustrating an impeller of a heat collection pump according to an embodiment of the present application;

fig. 11 is a schematic perspective view of a spray arm according to an embodiment of the present disclosure;

fig. 12 is a schematic top view of a spray arm according to an embodiment of the present disclosure;

fig. 13 is a cross-sectional view C-C of fig. 12.

Wherein, in the figures, the respective reference numerals:

100-a pump body; 101-a water outlet pipe; 102-a water inlet pipe; 200-a motor; 201-a drive shaft; 202-a stud; 300-a first energy concentrating cavity; 400-a second energy cavity;

1-upper pump casing; 11-a flow guide pipe; 12-a sealing ring; 13-buckling blocks; 14-positioning the bump;

2-lower pump casing; 20-a flow guiding gap; 21-punching; 22-clearance groove; 23-a seal; 24-convex edge; 25-a clasp; 26-a positioning projection;

3-a heating tube; 31-a heating ring;

4-an impeller; 40-clearance of play; 41-a suction tube; 42-blades; 43-flow channel; 44-screw holes; 45-vent holes; 46-annular vent grooves;

5-enclosing ribs; 50-water outlet; 51-a first end; 52-a second end;

6-a limiting part; 61-lower separation tongue; 62-upper separation tongue;

7-a spray arm; 701-middle part of spray arm; 702-two ends of the spray arm; 71-water conveying pipes; 72-blowhole.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application.

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 one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1 to fig. 3 together, a heat collecting pump according to an embodiment of the present application will be described. The heat collection pump comprises a pump body 100 and a motor 200, wherein the pump body 100 comprises an upper pump shell 1 and a lower pump shell 2, and the upper pump shell 1 and the lower pump shell 2 are spliced to form a first energy collection cavity 300; the pump body 100 is internally provided with a heating pipe 3 and an impeller 4, the impeller 4 is connected with the motor 200 and rotates in the first energy collecting cavity 300 to generate hydrodynamic force.

As shown in fig. 4 to 5, a surrounding rib 5 arranged around the periphery of the impeller 4 is arranged on the lower pump casing 2, and a flow guiding gap 20 is arranged between the surrounding rib 5 and the impeller 4; the pump body 100 is provided with a water outlet pipe 101, and the surrounding rib 5 is provided with a water outlet 50 communicated with the water outlet pipe 101; the impeller 4 rotates in the direction S to generate hydrodynamic force, so that the water flow is rotated from the surrounding rib 5 and is output to the water outlet pipe 101 through the water outlet 50. The surrounding rib 5 is provided with a first end portion 51 and a second end portion 52 at two sides of the water outlet 50, respectively, the lower pump casing 2 is further provided with a limiting member 6 for reducing a distance L between the surrounding rib 5 and the impeller 4, and the limiting member 6 abuts against between the first end portion 51 and the inner wall of the pump body 100 so that the first end portion 51 is offset towards the impeller 4; the distance between the inner wall of the circumferential rib 5 and the outer periphery of the impeller 4 is gradually increased from the first end 51 to the second end 52. As shown in fig. 5, the distance L1 between the circumferential rib 5 and the outer circumference of the impeller 4 is gradually increased toward the distance L2, so that the guide gap 20 is gradually increased.

Compared with the prior art, the heat collection pump has the advantages that the washing pump and the heating pipe are integrated into a whole to form the heat collection pump with the heating and water pumping functions, the lower pump shell 2 is provided with the surrounding rib 5 for increasing the characteristics of the volute, the surrounding rib 5 is arranged around the periphery of the impeller 4, and the flow guide gap 20 is formed between the surrounding rib 5 and the periphery of the impeller 4, so that the effective flow guide effect is achieved. Because the lower pump casing 2 is provided with the limiting member 6, the limiting member 6 abuts against between the first end portion 51 of the surrounding rib 5 and the inner wall of the pump body 100, so that the first end portion 51 is offset towards the periphery of the impeller 4, thereby reducing the distance between the first end portion 51 and the periphery of the impeller 4. The distance between the inner wall of the entire surrounding rib 5 and the outer periphery of the impeller 4 is gradually increased from the first end 51 to the second end 52, so that the flow guide gap 20 between the surrounding rib 5 and the impeller 4 is gradually increased from narrow to wide. When the impeller 4 rotates, the centrifugal power generated by the rotation of the impeller 4 throws the water out to the peripheral side, the kinetic energy is converted to the potential energy, and the diversion gap 20 is gradually increased from narrow to wide under the diversion effect of the surrounding rib 5, so that the hydrodynamic force is gradually enhanced, the lift of the pump body 100 is increased, and the hydraulic efficiency is improved.

In addition, compared with the heat collection pump with the partition in the prior art, the heat collection pump of the present application has the advantages that the partition arranged in the heat collection pump isolates the heating pipe 3 from the impeller 4, so that the heating chamber with the heating pipe 3 and the power chamber with the impeller 4 are formed inside the heat collection pump, so that water flow is heated in the heating chamber after entering the pump body 100, and then enters the power chamber to promote power, and thus the heating and power generation functions are sequentially performed. The heat collecting pump with such a structure increases the internal waterway stroke of the pump body 100, resulting in severe loss of heat energy and water power and low working efficiency. The heat collection pump of the application forms a first energy gathering chamber 300 through last pump case 1 and the concatenation of pump case 2 down, sets up heating tube 3 and impeller 4 simultaneously in first energy gathering chamber 300, and the outlet pipe 101 of pump body 100 communicates with the delivery port 50 of enclosing muscle 5, lets whole water route stroke shorten. When the impeller 4 generates hydrodynamic force, the hydrodynamic force can be directly guided to the water outlet 50 along the surrounding rib 5 and is timely output from the water outlet pipe 101, so that the hydrodynamic force loss is effectively reduced. For the heating performance of the pump body 100, on one hand, the heating tube 3 is used for heating the water flow entering the pump body 100; on the other hand, because the surrounding rib 5 is of an open structure, the surrounding rib plays a role in guiding flow and is communicated with the whole first energy collecting cavity 300, the water flow is accelerated and gradually increased under the driving of the power of the matching of the impeller 4 and the surrounding rib 5, and in the process of rotating the water flow, the heat on the heating tube 3 is taken away, so that the heat loss is effectively reduced, and the working efficiency of the pump body is improved.

In another embodiment of the present application, the structure of the pump body 100 is optimized, please refer to fig. 3 and fig. 6, the upper pump casing 1 is provided with a water inlet pipe 102 and a flow guide pipe 11 communicated with the water inlet pipe 102, the flow guide pipe 11 extends toward the impeller 4, and the heat generating pipe 3 is provided with a heating ring 31 disposed around the periphery of the flow guide pipe 11; the impeller 4 is provided with a suction pipe 41 which is sleeved with the draft tube 11. The draft tube 11 is connected with the impeller 4 to form an internal water flow channel, so that water flow firstly enters the internal water flow channel and then enters the first energy collecting cavity 300 from the periphery of the impeller 4. The heating ring 31 of the heating tube 3 heats the inside of the flow guiding tube 11 and is arranged in the first energy collecting cavity 300 to lead the water flow to take away heat, thereby effectively improving the utilization rate of heat energy and reducing heat loss.

In addition, as shown in fig. 6, a movable gap 40 is provided between the inner wall of the suction pipe 41 and the outer wall of the draft tube 11, so that water tension is formed. Not only the impeller 4 can rotate, but also the water liquid outside the draft tube 11 can be prevented from flowing back to the impeller 4, and the power loss is avoided.

Referring to fig. 3, the working principle of the heat collecting pump of the present application:

firstly, water flows into the flow guide tube 11 in the pump body 100 from the water inlet tube 102, and the heating ring 31 of the heating tube 3 heats the water flowing through the flow guide tube 11 for the first time; secondly, water flow enters the suction pipe 41 of the impeller 4 from the draft tube 11, passes through the inside of the impeller 4, is output from the periphery of the impeller 4, and rotates in the first energy-collecting cavity 300 under the guiding action of the surrounding ribs 5, so that the water power is improved; then, the water flow rotates in the first energy collecting cavity 300 and takes away the heat on the heating tube 3 at the same time, so that the water flow is timely output from the water outlet pipe 101 after the second heating. Therefore, the heat collection pump can increase the hydrodynamic force gradually and heat the water flow for the second time, so that the hydrodynamic force can be enhanced, the utilization rate of heat energy can be optimized, and the working efficiency is effectively improved.

In another embodiment of the present application, referring to fig. 3, the upper pump casing 1 is wrapped around the circumference of the surrounding rib 5, and a sealing ring 12 is disposed between the upper pump casing 1 and the surrounding rib 5, so as to improve the sealing performance.

In another embodiment of the present application, referring to fig. 4 to 6, the position-limiting member 6 is a lower tongue 61 disposed on the first end portion 51, and the lower tongue 61 extends toward the inner wall of the upper pump casing 1 and abuts against the inner wall of the upper pump casing 1, so that the distance L1 between the first end portion 51 and the outer periphery of the impeller 4 can be reduced to 1 to 6 mm, or preferably 1 to 3.5 mm. The distance between the inner wall of the entire circumferential rib 5 and the outer periphery of the impeller 4 may be set to be gradually increased from the first end 51 to the second end 52, wherein the distance L2 between the second end 52 and the outer periphery of the impeller 4 may be set to be 3.5 to 10 mm, or preferably 3.5 to 6 mm. The guide gap 20 between the surrounding rib 5 and the impeller 4 is gradually increased from narrow to wide, so that the pump head of the pump body is effectively increased, and the hydrodynamic force is improved.

Due to the arrangement of the lower baffle tongue 61, a water retaining groove is formed in the pump body 100 above the lower baffle tongue 61, and when water flow of the pump body 100 flows through the water retaining groove, power loss is easily caused under the blocking and limiting of the water retaining groove. Therefore, the upper pump shell 1 is also provided with an upper baffle tongue 62 vertically spliced with the lower baffle tongue 61, and the upper baffle tongue 62 is used for filling the water retaining groove above the lower baffle tongue 61. The upper partition tongue 62 may preferably be a protrusion with a shape matching with the first end 51, and an isolation gap is provided between the upper partition tongue 62 and the heating ring 31, and is disposed adjacent to the nozzle of the water outlet pipe 101. The water flow can not block the water outlet pipe 101, and can rotate to flow through the isolation gap to take away the heat of the heating ring 31, thereby effectively reducing the power loss and the heat energy loss.

In another embodiment of the present application, the structure of the impeller 4 is optimized, please refer to fig. 7 and 8, a plurality of blades 42 bent in the same direction are disposed on the impeller 4, and the plurality of blades 42 are annularly disposed on the impeller 4, so that the water passage of the impeller 4 forms a vortex structure, which is helpful for improving hydrodynamic force.

Referring to fig. 7, the impeller 4 is further provided with a plurality of flow passages 43 partitioned by the plurality of blades 42, and each flow passage 43 is communicated with the suction pipe 41. The water flow entering the impeller 4 from the suction pipe is dispersed and thrown out of the periphery of the impeller through the flow channels 43, so that the centrifugal power is enhanced, and the hydrodynamic force is effectively improved.

Referring to fig. 8 and 9, the width of the flow channel 43 is gradually increased from the inside of the impeller 4 to the outer circumference, and/or the height of the flow channel 43 is gradually decreased from the inside of the impeller 4 to the outer circumference, so as to form a structure for gradually increasing the water pressure, thereby effectively improving the hydraulic efficiency.

In another embodiment of the present application, referring to fig. 2, 6 and 7, a through hole 21 is formed in the center of the lower pump casing 2, a driving shaft 201 is provided on the motor 200, and the driving shaft 201 extends into the pump body 100 from the through hole 21 and is connected to the impeller 4; a stud 202 is arranged on the driving shaft 201, and a screw hole 44 sleeved with the stud 202 is arranged in the center of the impeller 4. The screw hole 44 may preferably be a copper screw hole, and may be integrally formed in the injection molding of the impeller 4, which is beneficial to enhance the fixing effect of the connection with the driving shaft 201 of the motor 200, and effectively improve the concentricity of the two, so that the impeller 4 rotates more stably.

During the rotation of the impeller 4, since a pressure difference is likely to exist between the upper side and the lower side of the impeller 4, the impeller 4 is likely to be unstable and generate noise during the rotation. Therefore, in another embodiment of the present application, please refer to fig. 8 and fig. 10 together, the bottom of the impeller 4 is provided with a plurality of vent holes 45 for balancing air pressure, and the vent holes 45 are arranged around the periphery of the screw hole 44 of the impeller 4, so as to balance the pressure difference above and below the impeller 4, effectively improve the stability of the rotation of the impeller 4, and perform an effective noise reduction function.

On the basis, referring to fig. 9 and fig. 10, the bottom of the impeller 4 is further provided with an annular ventilation groove 46 surrounding the screw hole 44, and the plurality of ventilation holes 45 are uniformly distributed on the annular ventilation groove 46, so that the pressure discharge space at the bottom of the impeller 4 is increased, and the pressure balance effect is improved.

In another embodiment of the present application, referring to fig. 2 and 3, a clearance groove 22 communicating with the through hole 21 is formed in the center of the lower pump casing 2, the clearance groove 22 is matched with the annular ventilation groove 46 of the impeller 4, and a sealing member 23 disposed around the outer circumference of the driving shaft 201 is disposed in the clearance groove 22 of the lower pump casing 2. On the one hand, the clearance groove 22 of the lower pump casing 2 is provided with a sealing member 23, and the sealing member 23 may preferably be a sealing ring arranged around the periphery of the driving shaft 201, which not only serves to seal the through hole 21 and limit the seepage of water, but also can keep the driving shaft 201 extending into the pump body 100 and connected with the impeller 4 concentric and ensure the stability of the rotation of the impeller 4. On the other hand, the clearance groove 22 and the annular ventilation groove 46 of the impeller 4 are matched to form a clearance space, so that the rotation of the impeller 4 is not blocked, and the rotation operation is smoother.

In another embodiment of the present application, an assembly structure of the pump body is improved, please refer to fig. 2, a convex edge 24 is disposed on the periphery of the lower pump casing 2, a plurality of hooks 25 are disposed on the convex edge 24, and a plurality of fastening blocks 13 matched with the hooks 25 are disposed on the upper pump casing 1. The buckling structure can be formed by the assembling mode of the upper pump shell 1 and the lower pump shell 2 by utilizing the mutual buckling and matching of the buckling block 13 of the upper pump shell 1 and the buckling hook 25 of the lower pump shell 2.

On the basis, please refer to fig. 2 and 5 together, in combination with the assembly manner of the turnbuckle, the protruding edge 24 of the lower pump case 2 is further provided with a positioning protrusion 26, and the upper pump case 1 is provided with a positioning bump 14 for abutting against the positioning protrusion 26, so as to form a limiting structure to limit the fixed state after the upper pump case 1 and the lower pump case 2 are spliced, so that the heating tube 3, the impeller 4 and the surrounding rib 5 in the pump body 100 are installed in place, so that each component combination can achieve a corresponding working effect, and the accuracy of component assembly in the pump body 100 can be effectively improved.

In another embodiment of the present application, a dishwasher using the heat collecting pump is further provided, please refer to fig. 11 to 13 together, the dishwasher includes a spraying device, the spraying device includes a spray arm 7 and the heat collecting pump, the heat collecting pump is connected with the spray arm 7 through a pipe; the middle part of the spray arm 7 is provided with a water pipe 71 connected with a pipeline, the spray arm 7 is provided with a plurality of water spraying holes 72, and the plurality of water spraying holes 72 are uniformly and symmetrically distributed from the middle part 701 of the spray arm 7 to two ends 702 of the spray arm 7 and are consistent in quantity, so that the spray arm 7 keeps balanced rotation under the driving of hydrodynamic force, and the washing effect is effectively improved.

Referring to fig. 13, a second energy collecting cavity 400 for water passing is disposed inside the spray arm 7, the second energy collecting cavity 400 is communicated with the water spraying hole 72 on the spray arm 7, and the cross-sectional area of the second energy collecting cavity 400 is gradually reduced from the middle 701 of the spray arm 7 to the two ends 702 of the spray arm 7, so that the width of the cavity in the middle 701 of the spray arm 7 is larger and gradually reduced from the middle 701 to the two ends 702 of the spray arm 7, thereby forming an effective pressurizing structure. The water flow is converted from kinetic energy to potential energy for the second time in the spray arm 7 and is output to the water spraying holes 72 on the two ends 702 of the spray arm 7, thereby effectively maintaining the water outlet pressure, being beneficial to spraying the water to the tableware for cleaning and improving the cleaning effect.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A heat collection pump comprises a pump body and a motor and is characterized in that the pump body comprises an upper pump shell and a lower pump shell, and the upper pump shell and the lower pump shell are spliced to form a first energy collection cavity; a heating pipe and an impeller are arranged in the pump body, the impeller is connected with the motor and rotates in the first energy-gathering cavity to generate hydrodynamics; the lower pump shell is provided with a surrounding rib arranged around the periphery of the impeller, and a flow guide gap is arranged between the surrounding rib and the impeller; the pump body is provided with a water outlet pipe, and the surrounding rib is provided with a water outlet communicated with the water outlet pipe; the water outlet is provided with a water outlet, the water outlet is provided with a water outlet, and a water outlet, the water outlet is provided with a water outlet, and a water outlet pipe is arranged on the water outlet, and a water outlet, wherein a water outlet is arranged on the water outlet, and a water outlet is arranged between the water outlet, and a water outlet is arranged on the water outlet, and a water outlet, wherein a water outlet is arranged between the water outlet is abutted between the water outlet is arranged between the water outlet is abutted between the water outlet, and a water outlet is arranged on the water outlet is abutted between the water outlet is arranged on the water outlet is arranged between the water outlet, and a lower pump body and a water outlet, and a water outlet; the distance between the inner wall of the surrounding rib and the periphery of the impeller is gradually increased from the first end part to the second end part.

2. The heat collecting pump as claimed in claim 1, wherein said upper pump casing is provided with a water inlet pipe and a flow guide pipe communicated with said water inlet pipe, said flow guide pipe extending toward said impeller, said heat generating pipe being provided with a heating ring disposed around an outer periphery of said flow guide pipe; the impeller is provided with a suction pipe which is sleeved with the flow guide pipe, and a movable gap is arranged between the inner wall of the suction pipe and the outer wall of the flow guide pipe.

3. The heat collecting pump as claimed in claim 2, wherein said upper pump casing is wrapped around said surrounding rib, and a sealing ring is disposed between said upper pump casing and said surrounding rib; the limiting piece is a lower isolating tongue arranged on the first end part, and the lower isolating tongue extends towards the inner wall of the upper pump shell and is abutted against the inner wall of the upper pump shell; the upper pump shell is also provided with an upper baffle which is vertically spliced with the lower baffle, and an isolation gap is arranged between the upper baffle and the heating ring and is adjacent to the pipe orifice of the water outlet pipe.

4. The heat collecting pump as claimed in claim 2, wherein said impeller is provided with a plurality of blades bent in the same direction, and said plurality of blades are annularly arranged on said impeller; the impeller is also provided with a plurality of flow passages which are formed by dividing the plurality of blades, and each flow passage is communicated with the suction pipe; the width of the flow channel is gradually increased from the inside of the impeller to the periphery, and/or the height of the flow channel is gradually decreased from the inside of the impeller to the periphery.

5. The heat collecting pump as claimed in claim 1, wherein said lower pump shell is provided with a through hole at the center thereof, and said motor is provided with a driving shaft extending from said through hole into the interior of the pump body and connected to said impeller; the driving shaft is provided with a stud, and the center of the impeller is provided with a screw hole sleeved with the stud.

6. The heat collecting pump as claimed in claim 5, wherein said impeller has a bottom portion provided with a plurality of air holes for balancing air pressure, and said plurality of air holes are arranged around an outer circumference of a screw hole of said impeller.

7. The heat collecting pump as claimed in claim 6, wherein said impeller further has an annular ventilation groove disposed around said screw hole at a bottom thereof, and said plurality of ventilation holes are uniformly distributed in said annular ventilation groove.

8. The heat collecting pump as claimed in claim 7, wherein a clearance groove communicating with said through hole is formed in the center of said lower pump casing, said clearance groove is matched with the position of said annular ventilation groove of said impeller, and a sealing member disposed around the outer periphery of said driving shaft is provided in said clearance groove of said lower pump casing.

9. The heat collecting pump as claimed in claim 1, wherein a convex edge is provided on the outer periphery of the lower pump shell, a plurality of hooks are provided on the convex edge, and a plurality of fastening blocks matched with the hooks in position are provided on the upper pump shell; the convex edge of the lower pump shell is also provided with a positioning bulge, and the upper pump shell is provided with a positioning lug which is used for abutting against the positioning bulge.

10. A dishwasher comprising a spray device, characterized in that the spray device comprises a spray arm and a heat collecting pump as claimed in any one of claims 1 to 9, the heat collecting pump and the spray arm being connected by a pipe; the middle part of the spray arm is provided with a water delivery pipe connected with a pipeline, the spray arm is provided with a plurality of water spray holes, and the plurality of water spray holes are uniformly and symmetrically distributed from the middle part of the spray arm to two ends of the spray arm and are consistent in quantity; the inside of spray arm is equipped with the second energy concentrating chamber that is used for the water, second energy concentrating chamber and the hole for water spraying intercommunication on the spray arm, just the cross sectional area in second energy concentrating chamber reduces the setting gradually from the middle part of spray arm to the both ends of spray arm.