CN112746460A

CN112746460A - Heating circulating pump and washing machine

Info

Publication number: CN112746460A
Application number: CN201911052472.0A
Authority: CN
Inventors: 吕佩师; 王得军; 方大丰; 薛凯; 赵志强
Original assignee: Qingdao Haier Washing Machine Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Washing Machine Co Ltd; Haier Smart Home Co Ltd
Priority date: 2019-10-31
Filing date: 2019-10-31
Publication date: 2021-05-04

Abstract

The invention discloses a heating circulating pump, which comprises a heating circulating pump body; the pump shell is internally provided with a cavity; the pump shell is provided with a water inlet and a water outlet, and the chamber is communicated with the water inlet and the water outlet to form a water path; the heating element is arranged in the water way and used for heating the water in the water way; and a filter member provided outside the heating element for filtering water flowing toward the heating element. Through set up filter on the heating circulation pump for foreign matter such as thread scraps in the rivers are held back, and can not directly contact with heating element, have not only promoted rate of heating, have still avoided heating element and foreign matter winding and in the accumulational problem of heating circulation pump department. The invention also discloses a washing machine, which comprises an outer barrel, wherein the outer barrel is respectively connected with the water inlet and the water outlet of the heating circulating pump through pipelines so as to heat the washing water in the outer barrel by using the heating circulating pump.

Description

Heating circulating pump and washing machine

Technical Field

The invention belongs to the field of clothes dryers, particularly relates to a washing machine with a circulating spraying function, and particularly relates to a heating circulating pump which is applied to the washing machine, has a heating function and is used for driving washing water to circularly flow outside an outer barrel.

Background

At present in the household electrical appliances field, the general application of heat pump is that heating element does not contact with water direct contact, can effectually avoid some foreign matters to glue like this and paste on the heating pipe, but this kind of heating efficiency is very low, about 70% approximately, has just caused the problem of the energy waste, heat time overlength.

Especially, when the heating pump is applied to a washing machine and used for heating washing water, the total amount of the washing water in the washing machine is large, the heating time is longer by adopting the non-contact heating pump, the washing beat is slowed, and the use experience of a user is influenced.

However, if the heating element is directly disposed in the chamber of the heat pump and directly contacts with water for heating, foreign matters such as lint in washing water of the washing machine flowing through the heating element directly contact with the heating element, and the foreign matters such as lint are wound and accumulated on the heating element, which may cause problems such as affecting heating efficiency and generating odor, and even may cause damage to the heating element in a serious case.

Therefore, how to arrange a heating pump suitable for a washing machine, so that a heating element integrated on the pump can be directly contacted with water for heating, and foreign matters such as thread scraps in washing water are prevented from being contacted with the heating element, which becomes a research and development hotspot.

In view of the above, the present invention is particularly proposed.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a heating circulating pump to solve the technical problem that when washing water flows through the heating circulating pump to be heated, thread scraps are contacted and wound with a heating element.

In order to solve the technical problems, the invention adopts the technical scheme that:

a heating circulation pump, comprising; the pump shell is internally provided with a cavity; the pump shell is provided with a water inlet and a water outlet, and the chamber is communicated with the water inlet and the water outlet to form a water path; the heating element is arranged in the water way and used for heating the water in the water way; and a filter member provided outside the heating element for filtering water flowing toward the heating element.

Furthermore, the filtering piece is arranged in the water path and wraps the heating element; the filtering piece is provided with a filtering hole for water flow to pass through and the heating element is communicated with the water path; preferably, the filter member is composed of any one or a combination of a filter screen in which filter holes are arranged, a grid structure, and a filter plate.

Further, the filtering piece filters part of water in the water path, and the filtered water flows to the heating element and flows out after being heated; the other part of water flows to the water outlet directly without being filtered.

Furthermore, the filtering piece is arranged in the cavity, the filtering piece is matched with the inner wall of the pump shell together or the filtering piece independently forms a heating cavity, and the heating element is arranged in the heating cavity; preferably, the heating element is spaced from the filter element and/or the inner wall of the pump housing.

Furthermore, the heating element is arranged in the water inlet, and the heating element is wrapped by the filtering piece and the inner wall of the water inlet together or independently; or the heating element is arranged in the water outlet, and the filtering piece and the inner wall of the water outlet jointly or independently wrap the heating element.

Furthermore, the filter element comprises a cylindrical filter part, two ends of the cylindrical filter part are directly or indirectly connected with the inner wall of the pump shell and/or the inner wall of the water inlet and/or the inner wall of the water outlet to form a heating cavity, a plurality of filter holes are distributed on the cylindrical filter part, and the heating cavity is communicated with the water path through the filter holes; preferably, the heating element extends at least one turn circumferentially around the cylindrical filter portion with a gap between the heating element and the filter element and/or the inner wall of the pump housing.

Further, filter and be an annular structure, inside has hollow heating chamber, and annular filter's at least interior periphery side is equipped with a plurality of filtration holes, and the heating chamber is linked together through straining hole and water route.

Furthermore, the filtering piece is arranged along any section of the water way; the heating element is arranged in the water path at the downstream of the filtering piece; preferably, a gap is arranged between the filtering piece and the inner wall of the pump shell or on the filtering piece, and part of water flow in the water path directly flows to the water outlet without being filtered.

Furthermore, the filter element is fixedly arranged on the pump shell or integrally formed with the pump shell.

Furthermore, at least part of the driving device is arranged in the cavity, the driving device is completely positioned outside the heating cavity, the heating cavity and the driving device are respectively arranged at two opposite sides of the cavity, the water inlet is arranged at one side of the heating cavity, and the water outlet is arranged at one side of the driving device; preferably, the water inlet is perpendicular to the axis of the water outlet.

The invention also provides a washing machine, which aims to realize the purpose of heating the washing water in the outer barrel by using the heating circulating pump. The technical scheme adopted for achieving the purpose is as follows:

a washing machine comprises an outer barrel which is respectively connected with a water inlet and a water outlet of a heating circulating pump through pipelines.

Further, an inner barrel is arranged in an outer barrel of the washing machine, a stirring structure is arranged in the inner barrel, the inner barrel and/or the stirring structure rotate to stir washing water contained in the outer barrel to generate water flow for washing a load contained in the inner barrel, a circulating pipe connected in parallel is arranged outside the outer barrel, a heating circulating pump is connected in series to the circulating pipe, and the washing water in the outer barrel is driven by the heating circulating pump to circularly flow between the outer barrel and the circulating pipe; the heating circulating pump is provided with a heating element for heating circulating water flowing through.

Further, a spraying structure is arranged on the outer barrel and connected with the circulating pipe for uniformly spraying the washing water pumped out from the outer barrel into the inner barrel. Preferably, the water inlet end of the circulating pipe is connected with the bottom of the outer barrel, and the water outlet end of the circulating pipe is communicated with the spraying structure arranged on the upper part of the outer barrel, so that the washing water at the bottom in the outer barrel flows upwards to the spraying structure through the circulating pipe and then is sprayed and reflowed to the upper surface of the washing water in the inner barrel to form circulation.

After adopting the technical scheme, compared with the prior art, the invention has the following beneficial effects:

through set up filter on the heating circulation pump for foreign matter such as thread scraps in the rivers are held back, and can not directly contact with heating element, have not only promoted rate of heating, have still avoided heating element and foreign matter winding and in the accumulational problem of heating circulation pump department.

Meanwhile, the heating circulating pump is arranged on the washing machine, so that the washing water in the outer barrel of the washing machine can circularly flow through the circulating pipe, and is heated under the action of the heating element when flowing through the heating circulating pump in the circulating flow process, thereby achieving the purpose of heating the washing water in the outer barrel of the washing machine; meanwhile, the heating element is integrated in the heating circulating pump, so that the number of parts of the washing machine is reduced, and the integration degree of the washing machine is improved.

Meanwhile, the invention has simple structure and obvious effect and is suitable for popularization and use.

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:

fig. 1 illustrates a schematic structural view of a washing machine in an embodiment of the present invention;

fig. 2 is a schematic view showing the structure of a heating cycle pump in the embodiment of the present invention;

FIG. 3 shows a schematic cross-sectional view A-A of FIG. 2 in an embodiment of the present invention;

FIGS. 4 to 8 are schematic sectional views illustrating the structure of the heating circulation pump according to various embodiments of the present invention;

fig. 9 shows a schematic view of a filter element according to an embodiment of the invention.

Description of the main elements in the figures: 1-shell, 2-outer barrel, 3-inner barrel, 4-impeller, 5-circulating pipe, 6-heating circulating pump, 7-spraying structure, 8-heating element, 9-water inlet pipe, 10-driving motor, 60-pump shell, 61-driving device, 62-water path, 63-chamber, 64-heating cavity, 65-filter element, 66-water inlet, 67-water outlet, 68-impeller, 69-motor, 610-first part, 611-second part, 612-notch, 613-cylindrical filtering part, 614-annular filtering part and 81-connecting terminal.

It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but 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 construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to 8, a heating circulation pump is described in an embodiment of the present invention, which includes; the pump shell is internally provided with a cavity; the pump shell is provided with a water inlet and a water outlet, and the chamber is communicated with the water inlet and the water outlet to form a water path; the heating element is arranged in the water way and used for heating the water in the water way; and a filter member provided outside the heating element for filtering water flowing toward the heating element.

The filtering piece is arranged on the heating circulating pump, so that foreign matters such as thread scraps in water flow are intercepted and cannot be directly contacted with the heating element, the heating rate is improved, and the problem that the heating element is wound with the foreign matters to be accumulated at the heating circulating pump is solved; simultaneously, through with heating element with filter the rivers direct contact that flows into behind the interception processing, make heating element can be direct with the rivers contact of the heating circulation pump of flowing through and carry out thermal treatment, promoted heating efficiency greatly.

Therefore, the water flow in the heating circulation pump is filtered before flowing into the heating cavity 64, so that the foreign matters such as thread scraps contained in the water flow are trapped in the water path 62 outside the heating cavity 64, and the water flow without the foreign matters after filtering flows into the heating cavity 64; be equipped with the heating element 8 that heats to rivers flowing through in the heating chamber 64, heating element 8 directly contacts with the rivers that flow through for carry out heat treatment to the rivers that flow through, and heat through the rivers that are linked together in to pump case 60 whole rivers in the water route, and then reach the effect of carrying out comprehensive heating to the rivers that flow through heating circulating pump 6.

Example 1

As shown in fig. 2 to 3, the present embodiment describes a heating circulation pump 6 including a pump housing 60, a water path 62 through which a water flow passes being provided in the pump housing 60; a filtering piece 65 which is used for at least part of the water flow in the water path 62 to flow through and entrap the clothes such as thread scraps in the external water path is arranged in the water path 62, the filtering piece 65 is arranged in the water path 62, and the heating element 8 is wrapped by the filtering piece 65; the filtering piece 65 is provided with a filtering hole through which water flows and the heating element 8 is communicated with the water path 62; preferably, the filter member 65 is formed of any one or a combination of a filter net in which filter holes are arranged, a lattice structure, and a filter plate.

In this embodiment, a chamber 63 is disposed in the pump case 60 of the heating and circulating pump 6, and the chamber 63 is respectively communicated with the outside of the pump case 60 through a water inlet 66 and a water outlet 67, so that the water inlet 66, the chamber 63, and the water outlet 67 together form a water path 62 through which water flows through the heating and circulating pump 6. At least part of the drive means 61 is arranged in the chamber 63 for providing a water flow driving force to the water flow through the heating and circulating pump 6. In the embodiment of the present invention, the driving device 61 may be any existing structure capable of providing driving force to water flow, for example: the impeller 68 is driven by the motor 69 to rotate, the impeller 68 is installed in the chamber 63, the water flow in the chamber 63 is driven to rotate by the rotating impeller 68, and then the water flow in the chamber 63 is thrown out from the water outlet 67 at a certain speed under the action of the rotating centrifugal force, so that the purpose of providing driving force for the water flow is achieved.

In this embodiment, the filtering member 65 filters part of the water in the water path 62, and the filtered water flows to the heating element 8, is heated by the heating element 8, and then flows out from the water outlet 67; the other part of the water flows directly to the water outlet 67 without being filtered. Therefore, partial water flow in the heating circulating pump directly flows out from the water outlet without being filtered by the filtering piece, foreign matters such as thread scraps intercepted by the filtering piece flow out from the water outlet along with the water flow, and the thread scraps intercepted are prevented from being retained in a water path of the heating circulating pump.

Example 2

In the present embodiment, as shown in fig. 4, the filter 65 is disposed in the chamber 63, the filter 65 cooperates with the inner wall of the pump housing 60, or the filter 65 forms the heating cavity 64 independently, and the heating element 8 is disposed in the heating cavity 64; preferably, the heating element 8 is spaced from the filter element 65 and/or the walls of the chamber 63.

In this embodiment, be provided with cavity 63 in the pump case 60 of heating circulating pump 6, the part of cavity 63 constitutes heating chamber 64 to make foreign matters such as thread scraps contained in the rivers that flow through can not be held back to cavity 63 department, make the foreign matters such as thread scraps held back in heating chamber 64 outside wash away along with the rivers in the heating circulating pump 6 water route of flowing through, and then effectively avoided heating circulating pump 6 department to pile up the production of the foreign matters condition such as thread scraps.

As shown in fig. 4, in the present embodiment, a filter 65 is disposed in the chamber 63 of the heating and circulating pump 6, and the filter 65 divides the inside of the chamber 63 into two independent parts, a first part 610 and a second part 611. The filtering member 65 is a filter screen or a filter plate provided with a hollow filtering hole through which water flows and which intercepts foreign matters such as thread scraps in the water flow; or, filter the piece and directly constitute by many interval fender muscle of crisscross arranging, keep off the fretwork filtration hole that the clearance constitutes water flow and passes, intercept foreign matters such as line bits in the rivers between the muscle.

In this embodiment, the outer periphery of the filter element 65 is in close contact with and hermetically connected to the wall of the cavity 63, so that the first portion 610 and the second portion 611 can only communicate with each other through the hollow filter holes provided in the filter element 65. At the same time, the outer periphery of the filter element 65 is connected to the wall of the chamber 63, so that the first part 610 and the second part 611 separated by the filter element 65 are both enclosed by the filter element 65 and the wall of the chamber 63.

In this embodiment, the first portion 610 of the chamber 63, which is separated by the filter element 65, is directly connected to both the water inlet 66 and the water outlet 67, the second portion 611 is not directly connected to both the water inlet 66 and the water outlet 67, and is connected to the first portion 610 only through the filter holes formed in the filter element 65, so that the second portion 611 forms the heating cavity 64, and the heating element 8 is disposed in the second portion 611 of the chamber 63. Through the above setting, make the rivers of heating circulating pump 6 of flowing through can be through the first part direct flow, make and filtered clothing such as thread scraps of holding back and be retained in the first part to make the rivers of clothing water stream such as the thread scraps of holding back and directly wash out heating circulating pump 6, and then realize the effect that foreign matter such as thread scraps does not retain in heating circulating pump 6 in the rivers.

In this embodiment, the filter member 65 may be provided in any shape to provide the divided first and second portions 610 and 611 in any corresponding shape, but the following conditions need to be satisfied: the heating cavity 64 surrounded by the filtering element 65 needs to be arranged with at least part of the water inlet 66 and at least part of the water outlet 67 in a staggered way; preferably, the heating cavity 64 is staggered with both the water inlet 66 and the water outlet 67, so that the divided first part 610 is communicated with both the water inlet 66 and the water outlet 67, and the second part 611 is not communicated with both the water inlet 66 and the water outlet 67; for example, the following structure is adopted:

as shown in fig. 4, in the present embodiment, the filter member 65 includes a cylindrical filter portion 613 and an annular filter portion 614, the cylindrical filter portion 613 is in a cylindrical shape provided coaxially with the water inlet 66 of the chamber 63, one end of the cylindrical filter portion 613 is hermetically connected to the wall of the chamber 63 at the outer periphery of the water inlet 66, and the other end extends into the chamber 63; the annular filter unit 614 is formed in an annular shape coaxial with the water inlet 66, and the outer peripheral side of the annular filter unit 614 is connected to the wall of the chamber 63, and the inner peripheral side thereof is connected to the cylindrical filter unit 613, so that the heating chamber 64 is formed by the outer peripheral side of the cylindrical filter unit 613, and the portion of the chamber 63 between the annular filter unit 614 and the wall of the chamber 63 on the water inlet 66 side.

In this embodiment, the filter 65 may be fixedly mounted on the pump housing 60 or may be integrally formed with the pump housing 60, and the heating element 8 is disposed in the heating cavity 64 defined by the filter 65 and the cavity wall of the cavity 63.

In this embodiment, the impeller 68 of the driving device 61 is disposed in the chamber 63, and the driving device 61 is entirely disposed outside the heating cavity 64, the heating cavity 64 and the impeller 68 of the driving device 61 are respectively disposed on two opposite sides of the chamber 63, the water inlet 66 is disposed on one side of the heating cavity 64, and the water outlet 67 is disposed on a peripheral wall of one side of the driving device 61; preferably, the inlet 66 is arranged perpendicular to the axis of the outlet 67.

In this embodiment, the heating cavity 64 is in an annular shape coaxially arranged with the water inlet 66, an inner peripheral side of the annular heating cavity 64 forms a channel directly communicated with the water inlet 66, and a plurality of hollow filtering holes through which water flows and which intercept thread scraps in the water flow are arranged on an inner peripheral side wall of the annular heating cavity 64, so that at least part of the water flowing into the cavity 63 from the water inlet 66 flows into the annular heating cavity 64 through the hollow filtering holes and is heated by the heating element 8 arranged in the heating cavity 64.

In this embodiment, the heating element 8 extends at least one turn circumferentially around the annular heating cavity 64, and the heating element 8 is spaced from the filter element 65 and/or the cavity wall of the cavity 63. Of course, the heating element 8 in this embodiment may also be any other conventional shape, which is only required to mount the heating element 8 in the heating cavity 64, and to make the connection terminal 81 of the heating element 8 penetrate out of the pump housing 60 and be exposed outside the heating circulation pump 6, so as to connect the heating element 8 with the power supply wire.

Example 3

As shown in fig. 5, a heating circulation pump 6 is described in the present embodiment, which is different from embodiment 2 described above in that: a chamber 63 is arranged in the pump shell 60 of the heating circulating pump 6, a filtering piece 65 is arranged in the chamber 63, the filtering piece 65 alone forms an independent chamber forming a heating cavity 64, and the heating element 8 is arranged in the heating cavity 64 formed by the filtering piece 65.

In this embodiment, the filter element 65 is disposed inside the chamber 63 and is fixedly connected to the wall of the chamber 63; the heating element 8 is arranged in the heating chamber 64 which is formed by the filter element 65 alone, and the heating element 8 is fixedly connected with the filter element 65 and/or the inner wall of the pump housing 60, so that the heating element 8 is fixedly mounted in the heating circulation pump 6.

In this embodiment, in order to ensure that the thread scraps and other foreign matters trapped outside the heating cavity 64 can be washed away with the water flow, a gap is required between at least a part of the periphery of the filtering member 65 and the cavity wall of the cavity 63, and/or a passage is required to be provided on the filtering member, so as to ensure that at least a part of the water flow flowing into the cavity 63 from the water inlet 66 can directly flow to the water outlet 67 from the gap and/or the passage without being filtered by the filtering member 65, thereby realizing that the trapped thread scraps and other foreign matters are washed away and are not retained at the heating circulation pump.

In this embodiment, the specific structure may adopt the following manner:

as shown in fig. 5 and 9, the filter member 65 is annular, the annular filter member 65 is hollow inside for accommodating the heating element 8, and at least the inner peripheral side of the annular filter member 65 is provided with filter holes for communicating the heating element 8 wrapped inside the filter member with the outer chamber 63. So that the inside of the filter 65 forms a heating chamber 64 in which the heating element 8 is mounted, and the outside of the filter 65 forms a passage directly communicating with the water inlet 66 and the water outlet 67, the heating element 8 communicating with the chamber 63 only through the filtering holes of the filter 65.

In order to ensure that the heating element 8 does not burn or the like on other components, the heating element 8 and the filter member 65 need to be spaced apart from each other by a gap. Of course, when the filter member 65 is made of a high temperature resistant material such as metal, a layer of the filter member 65 (not shown) may be directly wrapped outside the heating element 8.

Example 4

As shown in fig. 6, a heating circulation pump 6 in the present embodiment is different from embodiment 3 described above in that: the pump shell 60 of the heating circulating pump 6 is provided with a water inlet 66 communicated with the chamber 63, a filtering piece 65 is arranged in the water inlet 66, the filtering piece 65 alone forms an independent chamber forming a heating cavity 64, and the heating element 8 is arranged in the heating cavity 64 formed by the filtering piece 65.

In the present embodiment, as shown in fig. 6, the filter member 65 is disposed inside the water inlet 66 and is fixedly connected to the inner wall of the water inlet 66; the heating element 8 is arranged in the water inlet 66 which is defined by the filtering member 65 alone, and the heating element 8 is fixedly connected with the inner wall of the filtering member 65 and/or the water inlet 66 so as to realize the fixed installation of the heating element 8 in the heating circulating pump 6.

In this embodiment, in order to ensure that foreign matters such as lint trapped outside the heating chamber 64 can be washed away with the water flow, at least a part of the periphery of the filter element 65 and the inner wall of the water inlet 66 need to be spaced apart from each other by a gap, or a passage for allowing the water flow to directly flow to the water outlet 67 without being filtered is formed in the filter element 65, so that at least a part of the water flow flowing into the cavity 63 from the water inlet 66 can flow to the water outlet 67 without passing through the heating chamber 64, and the effect of washing away the foreign matters such as lint trapped outside the heating chamber and not accumulating at the heating circulation pump is achieved. The specific structure of the filter member 65 may be the structure of embodiment 2 or embodiment 3, or may be another structure.

In this embodiment, the filtering member 65 and the heating element 8 may be disposed at the water outlet 67 of the pump housing 60, so as to achieve the same effect of heating the water flowing through.

Example 5

The present embodiment differs from the above embodiments in that: two chambers are arranged in the pump shell 60 of the circulating heating pump 6, wherein at least part of one chamber forms a heating cavity 64, at least part of the driving device 61 is arranged in the other chamber 60, and the water inlet 66, the heating cavity 64, the chamber 60 and the water outlet 67 of the circulating heating pump 6 are sequentially communicated in series with one another to form a water path 62 through which water flows. The heating element 8 is disposed in the heating chamber 64 and the water path 62 is provided with a filter 65 for filtering water flowing toward the heating element 8. By means of the above-mentioned arrangement, it is likewise possible to realize the effect of integrating the heating element 8 on the circulation pump and heating the flow-through water stream by means of the heating element 8. (not shown in the drawings)

Example 6

As shown in fig. 7, in the present embodiment, a heating circulation pump 6 is described, and a filter member 65 is provided along any cross section of the water path 62; the heating element 8 is disposed in the water path 62 downstream of the filter element 65. Through the arrangement, the filtering piece filters and intercepts foreign matters such as thread scraps in the water channel, so that the filtered water is contacted with the downstream heating element, and the effect of avoiding the contact of the foreign matters such as the thread scraps and the heating element can be achieved.

As shown in fig. 7, in the present embodiment, a filter 65 covering a water inlet 66 is disposed in a chamber 63 of the heating circulation pump 6, and a plurality of hollow-out filter holes through which water flows and which intercept foreign matters such as thread scraps in the water flow are disposed on the filter 65; or, filter 65 comprises the multirow grid muscle of crisscross arranging of horizontal and vertical, and the clearance between the grid muscle constitutes the fretwork filtration hole that supplies rivers to pass, intercepts foreign matter such as line bits in the rivers. Filter the periphery of 65 and the chamber wall of cavity 63 and laminate mutually and contact and sealing connection to make the rivers that flow in from water inlet 66 all need pass and flow into cavity 63 after the fretwork filtration pore that sets up on filtering piece 65, reached and carried out foreign matter such as thread scraps to whole rivers that flow through heating circulating pump 6 and held back filterable purpose.

In this embodiment, the chamber 63 on the downstream side of the filter 65 is entirely provided with a heating chamber 64, and the heating element 8 is directly provided in the chamber 63 to heat the water flowing into the chamber 63 after filtering and trapping foreign matters such as lint.

In this embodiment, in order to improve the heating uniformity, the heating element 8 may be provided as at least one ring of annular structure arranged around the chamber axis; and in order to avoid burning damage to the pump shell, the filter piece 65 and the like caused by the heating element 8, gaps are required to be arranged between the heating element 8 and the cavity wall of the cavity 63 and between the heating element 8 and the filter piece 65 so as to ensure that the heating element 8 is not in direct contact with other parts of the heating circulating pump 6.

In this embodiment, in order to improve the passability of the water flow in the heating circulation pump 6, the following settings may be performed: the heating element 8 and the driving device 61 are respectively arranged on two opposite sides of the pump shell 60, so that the heating element 8 heats the water flowing into the chamber 63 from the water inlet 66, and then the heated water flows out from the water outlet 67 under the action of the driving device 61. Meanwhile, the water inlet 66 is arranged on the side of the heating element 8, and the water outlet 67 is arranged on the side wall of the pump shell 60 close to the driving device 61, so that the axes of the water inlet 66 and the water outlet 67 are vertically arranged, and the water inlet 66 and the water outlet 67 are respectively connected with a pipeline. Furthermore, the impeller 68 of the driving device 61 is parallel to the axis of the water inlet 66; preferably, the impeller 68 of the driving device 61 is disposed to coincide with the axis of the water inlet 66, so that the water flowing into the chamber 63 from the water inlet 66 flows along the circumferential wall of the chamber 63 under the stirring action of the rotating impeller 68, and then is thrown out from the water outlet 67 formed in the radial direction, thereby achieving the effect of providing a flow driving force to the water flowing through the heating and circulating pump 6.

In this embodiment, in order to ensure the normal operation of the electric components of the heating and circulating pump 6, the motor 69 of the driving device 61 is disposed outside the pump housing 60 and outside the water channel 62, and only the rotating shaft of the motor 69 is inserted into the chamber 63 and connected to the impeller 68 in the chamber 63 for driving the impeller 68 to rotate. At the same time, the connection 81 of the heating element 8 is arranged outside the pump housing 60, in order to ensure that the supply lines of the heating element 8 do not come into contact with the water flowing through the heating circulation pump 6.

In this embodiment, in order to avoid the foreign matters such as thread scraps intercepted outside the cavity 63 by the filtering member 65 to be accumulated at the heating circulation pump 6, the heating circulation pump 6 may be disposed between the water inlet end and the water outlet of the outer tub of the circulation pipe, and the water inlet 66 of the heating circulation pump 6 is respectively communicated with the outer tub and the drain pipe of the washing machine through the tee joint, so that the foreign matters such as thread scraps intercepted are flushed away along with the drainage water flow of the washing machine, and the problem that the foreign matters such as thread scraps are piled and retained at the heating circulation pump 6 is avoided.

Example 8

As shown in fig. 8, the present embodiment is based on embodiment 7, and further has the following technical features: a gap 612 is arranged between the filter element 65 and the inner wall of the pump shell 60 or on the filter element 65 for allowing part of water flow in the water path 62 to directly flow to the water outlet 67 without filtering.

In the present embodiment, as shown in fig. 8, a filter element 65 is disposed in the chamber, covering the place where the chamber communicates with the water inlet, to filter the water flowing into the chamber; a certain gap is left between the periphery of the filtering piece 65 and the wall of the cavity chamber, or a channel is arranged on the filtering piece to form a gap 612 correspondingly, so that the unfiltered water flow in the water path directly flows into the cavity chamber from the gap.

Meanwhile, the notch 612 and the heating element 8 are arranged in a staggered mode, so that the trapped thread scraps flow into the cavity 63 through the notch 612 and are washed away from the water outlet 67 along with the water flow flowing through the heating circulating pump, and the problems that the thread scraps and other foreign matters trapped by the filter elements are washed away along with the water flow and the heating circulating pump is accumulated can be solved.

Preferably, in order to improve the filtering shielding effect and prevent the unfiltered water from contacting the heating element 8, the filtering member 63 is provided with a folded edge at the notch, which is bent toward the side of the heating element 8, so as to guide the unfiltered water to the water outlet 67 without contacting the heating element 8.

Example 9

As shown in fig. 1 to 9, the present embodiment describes a washing machine equipped with the circulation heat pump 6 of the above embodiment, which includes a housing 1; an outer barrel 2 is arranged in the shell 1, and the outer barrel 2 can generate vibration displacement through a damping device and is arranged on the shell 1 and used for containing washing water; an inner barrel 3 is arranged in the outer barrel 2, the inner barrel 3 is connected with a driving motor 10 through a rotating shaft, and is rotatably arranged in the outer barrel 2 and used for containing a load to be washed; the inner barrel 3 is provided with washing holes for connecting and communicating the inner barrel 3 and the outer barrel 2, so that washing water can flow between the inner barrel and the outer barrel through the washing holes; the water inlet pipe 9, the water outlet end is communicated with the outer barrel 2 and is used for supplying water to the outer barrel 2 of the washing machine.

The washing machine of the present invention may be a drum-type washing machine or a pulsator-type washing machine, and the following is developed for convenience of description by taking a pulsator-type washing machine as an example: the outer barrel 2 and the inner barrel 3 are coaxially and vertically arranged, the lower end of the inner barrel 3 is sealed by the bottom of the inner barrel 3, a stirring structure is arranged in the inner barrel 3, and the stirring structure can be any device which can stir the washing water contained in the outer barrel 2 in the prior art, such as: as shown in fig. 1 to 2, a pulsator 4 is installed at the bottom of the inner tub 3.

In this embodiment, the outer tub 2 is provided with a circulating pipe 5, two ends of the circulating pipe 5 are respectively communicated with the bottom and the upper part of the outer tub 2, the circulating pipe 5 is connected in series with a heating circulating pump 6, and the heating circulating pump 6 is used for providing power to drive water at the bottom of the outer tub 2 to flow to the upper part of the outer tub through the circulating pipe. Preferably, in order to facilitate installation and installation, the circulation pipe 5 is disposed outside the outer tub 2, the circulation pipe 5 extends vertically, and the upper and lower ends of the circulation pipe are respectively communicated with the bottom and the top of the outer tub 2 to form a circulation flow passage for circulation flow of the washing water; the heating circulation pump 6 is installed at the lower side of the bottom of the outer tub 2.

In this embodiment, the outer tub 2 is provided with a spraying structure 7, the spraying structure 7 is connected to the water outlet end of the circulation pipe 5, and the spraying structure 7 is provided with a plurality of spraying holes for spraying water toward the inner tub 3, so as to uniformly spray the circulation water supplied from the circulation pipe 5 into the inner tub 3 in a spraying manner, so that the circulation water can uniformly spray the load contained in the inner tub 3, and the mixing uniformity of the washing water and the load in the inner tub 3 can be improved. Meanwhile, because the washing water contained in the outer barrel 2 is pumped out under the action of the heating circulating pump 6, the washing water flowing through the washing water is uniformly distributed under the action of the impeller in the heating circulating pump 6 when flowing through the heating circulating pump 6, and the distribution uniformity of the washing water is further improved. In addition, because the inlet water in the outer barrel continuously and circularly flows between the outer barrel and the circulating pipe, the washing agent, the washing powder and the like which are put into the outer barrel are uniformly distributed in the inlet water in the outer barrel under the action of the circulating water flow. Preferably, the spraying structure 7 is an annular cavity arranged at the position of a barrel opening at the top of the outer barrel 2, a plurality of water spraying ports for spraying water towards the inner barrel 3 are uniformly distributed on the inner periphery of the annular cavity, a circle of annular flow channels are arranged in the annular cavity, each water spraying port is communicated with the annular flow channels, a water inlet communicated with a water outlet of the circulating pipe 5 is arranged on the periphery of the spraying structure 7, and the water inlet is communicated with the annular flow channels inside the spraying structure 7.

In this embodiment, the heating circulation pump 6 is provided with a heating element 8, and the heating element 8 may be any one of the existing devices that directly contacts with water flow and heats, for example: electrical heating wires, heat exchange devices, and the like. The heating element 8 can act directly on the water flow flowing through the heating circulation pump 6 to directly heat the flowing water flow; alternatively, a chamber is disposed on the heating circulation pump 6, the heating element 8 heats the water flow in the chamber, and the chamber is communicated with the outer tub 2 via a pipeline, so that the heat generated by the heating element 8 is transferred via the communicated water flow itself to heat the washing water in the outer tub 2.

In the present embodiment, the heating circulation pump is mounted on a drum washing machine, the outer tub is provided as an outer tub having a horizontal or inclined axis, and an inner tub is mounted in the outer tub so as to be rotatable relative thereto. The circulating pipe is set outside the outer cylinder, the bottom of the outer cylinder is connected to the inner cylinder by the circulating pipe, and the heating circulating pump is set on the circulating pipe to make the washing water flow into the inner cylinder.

Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A heating circulation pump, comprising;

the pump shell is internally provided with a cavity;

the pump shell is provided with a water inlet and a water outlet, and the chamber is communicated with the water inlet and the water outlet to form a water path;

it is characterized in that the preparation method is characterized in that,

the heating element is arranged in the water way and used for heating the water in the water way;

and a filter member provided outside the heating element for filtering water flowing toward the heating element.

2. The heating circulation pump of claim 1, wherein a filter is disposed in the water path, the filter enclosing the heating element; the filtering piece is provided with a filtering hole for water flow to pass through and the heating element is communicated with the water path;

preferably, the filter member is composed of any one or a combination of a filter screen in which filter holes are arranged, a grid structure, and a filter plate.

3. A heating cycle pump as claimed in claim 1 or 2, wherein the filter member filters part of the water in the water path, the filtered water flowing to the heating element after being heated and flowing out; the other part of water flows to the water outlet directly without being filtered.

4. A heating cycle pump as claimed in any one of claims 1 to 3, wherein the filter element is disposed in the chamber, the filter element co-operates with the inner wall of the pump housing, or the filter element independently forms a heating chamber in which the heating element is disposed;

preferably, the heating element is spaced from the filter element and/or the inner wall of the pump housing.

5. A heating circulation pump according to any one of claims 1 to 3, wherein the heating element is provided in the water inlet, and the filter member is provided to enclose the heating element together with an inner wall of the water inlet or independently of the filter member;

or the heating element is arranged in the water outlet, and the filtering piece and the inner wall of the water outlet jointly or independently wrap the heating element.

6. The heating circulating pump of claim 4 or 5, wherein the filter element comprises a cylindrical filter part, two ends of the cylindrical filter part are directly or indirectly connected with the inner wall of the pump shell and/or the inner wall of the water inlet and/or the inner wall of the water outlet to form a heating cavity, a plurality of filter holes are distributed on the cylindrical filter part, and the heating cavity is communicated with the water path through the filter holes;

preferably, the heating element extends circumferentially at least one turn around the cylindrical filter portion.

7. A heating and circulating pump as claimed in claim 4 or 5, wherein the filter element is of an annular configuration having a hollow heating chamber therein, at least the inner periphery of the annular filter element being provided with a plurality of filter openings, the heating chamber being in communication with the water path through the filter openings.

8. The heating circulation pump of claim 1, wherein the filter is disposed along any cross section of the water path; the heating element is arranged in the water path at the downstream of the filtering piece;

preferably, a gap is arranged between the filtering piece and the inner wall of the pump shell or on the filtering piece, and part of water flow in the water path directly flows to the water outlet without being filtered.

9. A heating and circulating pump according to any one of claims 1 to 8, wherein the filter member is fixedly mounted on the pump housing or is formed integrally with the pump housing.

10. A washing machine comprising an outer tub connected to a water inlet and a water outlet of the heating circulation pump according to any one of claims 1 to 9 via a pipe, respectively.