CN113136706A - Drain valve assembly and washing machine - Google Patents

Abstract

The invention discloses a drain valve assembly and a washing machine, wherein the drain valve assembly comprises a valve body, a first water through opening and a second water through opening are arranged on the valve body, a drain cavity for guiding water from the first water through opening to the second water through opening is formed in the valve body, a valve unit for connecting/disconnecting a water path between the first water through opening and the second water through opening is arranged in the drain cavity, the drain cavity comprises a heating cavity and a valve cavity, the heating cavity is communicated with the first water through opening, the valve cavity is communicated with the second water through opening, the valve unit is arranged in the valve cavity, and the heating cavity is internally provided with a heating unit. The washing machine comprises a barrel component and a circulating device, wherein the circulating device is provided with a water inlet end and a water outlet end, the barrel component is provided with a water outlet, a first water through hole is communicated with the water outlet, the water inlet end of the circulating device is communicated with a heating cavity, and the water outlet end is used for circularly supplying water into the barrel component. The heating unit is arranged in the valve body cavity of the drain valve and is integrated with the drain valve into an independent module structure, so that the heating device is simple in structure and convenient to process and produce.

Description

Drain valve assembly and washing machine

Technical Field

The invention belongs to the field of washing equipment, and particularly relates to a drain valve assembly and a washing machine with the same.

Background

Most of the commercially available washing powders are used to wash soils by active enzymes, which are most active at around 40 degrees. When winter comes, the temperature is reduced, especially in the north, the solubility of the washing powder in water is obviously reduced, so that a large amount of washing powder still remains on clothes after the washing cycle in the washing machine is finished, the clothes are not washed clean, and water, electricity and time are wasted.

Some manufacturers have developed washing machines with water heating function, mostly adopt to install the heating pipe in washing machine water holding barrel bottom to realize heating water washing, the heating pipe is installed together with the water holding barrel, need to the water holding barrel design, set up the recess that holds the heating pipe in water holding barrel bottom, heating pipe one end stretches out in the barrel bottom outside, and the other end extends in the recess, passes through rubber spare with the water holding barrel and seals, and the heating pipe heats water in the water holding barrel to preset temperature. If the existing pulsator washing machine without the heating function is modified to have the heating function, the water containing barrel needs to be redesigned, and a processing mold is additionally arranged to produce the matched water containing barrel, so that the non-heating pulsator washing machine and the pulsator washing machine with the heating function cannot share the production line of the water containing barrel, and great resource waste is caused.

For example, international patent application publication No. WO2019167422a1 discloses a washing machine in which a groove for mounting a heating pipe and a mounting portion are provided at the bottom of a tub of the washing machine in order to implement a heating function of the pulsator washing machine, which is different from a conventional pulsator washing machine tub.

There are some manufacturers that install a heating module at the bottom of the tub of the washing machine, for example, a heating module having a separate heating space provided on the circulation water pipe, or replace the circulation pump with a heating pump, but this improved structure also has the disadvantages of difficult installation and increased cost, and it is more serious that the increased heating module is heavy, and the installation at the bottom of the tub causes the center of gravity of the tub to shift, affecting the balance of the tub, and causing serious consequences.

The present invention has been made in view of this situation.

Disclosure of Invention

The present invention is directed to overcome the disadvantages of the prior art, and to provide a drain valve assembly with a heating function to heat the washing water in the tub of a washing machine.

It is another object of the present invention to provide a low cost drain valve assembly that integrates a heating unit within the valve body.

Still another object of the present invention is to provide a drain valve assembly with modular design that is easy to install and has high versatility.

It is still another object of the present invention to provide a washing machine having the above drain valve assembly.

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

a drain valve assembly comprises a valve body, wherein a first water through opening and a second water through opening are formed in the valve body, a water drainage cavity for guiding water from the first water through opening to the second water through opening is formed in the valve body, a valve unit for communicating/disconnecting a water path between the first water through opening and the second water through opening is arranged in the water drainage cavity, the water drainage cavity comprises a heating cavity and a valve cavity, the heating cavity is communicated with the first water through opening, the valve cavity is communicated with the second water through opening, the valve unit is arranged in the valve cavity, and a heating unit for heating water is arranged in the heating cavity.

Further, the heating chamber and the valve chamber are integrally formed in the valve body.

Furthermore, the valve body is also provided with a first opening, the first opening is communicated with the heating chamber, the heating unit comprises a heater and a supporting part for supporting the heater, the heater comprises a heating part and a terminal part, the heating part is positioned in the heating chamber, the terminal part penetrates through the supporting part and is positioned outside the heating chamber, and the supporting part is connected with the first opening in a sealing manner.

Further, the supporting part is detachably connected with the first opening;

preferably, the supporting part is a cover body structure and is in rotary clamping connection or threaded connection with the first opening.

By utilizing the structure, the heating unit can be conveniently replaced and maintained, and the inside of the heating cavity is also conveniently cleaned.

Further, the first opening is disposed at an end of the heating chamber away from the valve chamber, and the heating portion extends from the first opening toward the valve chamber, preferably, is disposed close to an inner wall of the heating chamber, or is disposed close to the supporting portion;

preferably, the heating part is of a ring-shaped heating pipe structure, or of a heating pipe structure extending spirally, or of a heating rod structure extending towards the valve chamber;

preferably, the heating pipe structure arranged in a spiral extending manner is laid on the end face of the supporting portion located at the inner side of the heating chamber and extends spirally outwards from the center along the circumference, or the heating pipe structure arranged in a spiral extending manner extends from the supporting portion to the direction of the valve chamber.

By using the structure, the heating area of the heating unit can be increased in the limited space of the heating chamber, so that the heating efficiency is improved.

Furthermore, a filtering part is arranged in the heating cavity, the filtering part is matched with the inner wall of the heating cavity to form a filtering cavity, and the heating part is positioned in the filtering cavity;

preferably, a waterway from the first water passage port to the valve chamber is avoided from the filter part;

preferably, the filter chamber is located on the outer periphery of a waterway from the first water passage port to the valve chamber.

By utilizing the structure, the winding of the heating unit and the thread scraps during drainage can be reduced, and the thread scraps can be conveniently discharged.

Further, the heating chamber is a cylindrical structure, one end of the heating chamber is communicated with the valve chamber, the other end of the heating chamber is formed into the first opening, the peripheral wall of the heating chamber comprises a top wall, a bottom wall and a side wall, the first water through opening is formed in the top wall, and preferably, the inner surface of the bottom wall of the heating chamber is inclined downwards from the far end to the direction close to the valve chamber.

With this configuration, the heating unit can be easily maintained, and the washing water in the heating chamber flows toward the valve chamber during drainage, so that the washing water in the heating chamber can be drained during drainage, thereby preventing bacteria from growing.

Further, an annular sealing portion is formed between the valve chamber and the heating chamber, a passage communicating the heating chamber and the valve chamber is formed in a hollow portion of the annular sealing portion, and the valve unit opens and closes the passage.

Preferably, the valve body still is equipped with the second opening, the second opening with the valve chamber communicates with each other, the second opening with the sealing portion sets up relatively, valve unit includes valve plug, valve gap and drive element, the valve plug is located the inside of valve chamber, valve gap and second opening sealing connection, drive element is located the drive of valve gap outside the valve plug is close to/keeps away from the sealing portion motion.

Furthermore, the drain valve assembly also comprises a water pump, a third water through hole is formed in the valve body, and the water pump is communicated with the heating chamber through the third water through hole;

preferably, the first water passage port is arranged on the top wall of the heating chamber and is far away from the valve chamber, and the third water passage port is arranged on the side wall of the heating chamber and is close to the valve chamber;

preferably, the water inlet of the water pump is directly connected with the third water through opening in a sealing manner, or the water inlet of the water pump is connected with the third water through opening by a water guide pipe.

According to the drain valve assembly, the valve body and the water pump are assembled to form the integrated module, so that the mounting process is simplified, and the mounting time and cost are reduced; the first water through hole is a water inlet, the third water through hole is a water outlet, and the first water through hole and the third water through hole are arranged far away from each other and close to each other in the valve chamber, so that the distance between the first water through hole and the third water through hole can be maximized, the time for heating water can be prolonged relatively, and the heating efficiency is improved.

The washing machine with the drainage valve assembly comprises a barrel assembly and a circulating device, wherein the circulating device is provided with a water inlet end and a water outlet end, the barrel assembly is provided with a water outlet, the first water through port is communicated with the water outlet, the water inlet end of the circulating device is communicated with the heating chamber, and the water outlet end is used for circularly supplying water to the interior of the barrel assembly.

The bucket assembly comprises a water containing bucket and a washing bucket, the water containing bucket and the washing bucket are the same bucket body or two different bucket bodies, and the water outlet is formed in the bottom of the water containing bucket.

According to the invention, the drain valve component with the heating function is arranged at the bottom of the water bucket and is communicated with the drain port, water in the water bucket is heated in the heating chamber of the drain valve component and then is sent into the washing bucket through the circulating device, and the purpose of heating the water in the water bucket is realized through a circulating heating mode. Compared with the prior art, the space occupancy rate of the barrel bottom is relatively reduced, the space utilization efficiency of the barrel bottom is improved, and the influence of additionally adding a heating device on barrel balance is relatively reduced.

After the technical scheme is adopted, compared with the prior art, the invention has the following beneficial effects.

The heating unit is arranged in the valve body cavity of the drain valve and is integrated with the drain valve into an independent module structure, so that the structure is simple and the processing and the production are convenient; the drain valve component is arranged at the bottom of the washing machine and connected with the water outlet, so that the assembly and disassembly are convenient, the assembly speed is improved, and the disassembly, maintenance or replacement efficiency is also improved.

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 is a schematic diagram illustrating a water heating process of a washing machine according to a first embodiment of the present invention;

FIG. 2 is a schematic view illustrating a draining process of the washing machine according to the first embodiment of the present invention;

FIG. 3 is a schematic diagram illustrating a water heating process of a washing machine according to a second embodiment of the present invention;

FIG. 4 is a schematic view illustrating a draining process of a washing machine according to a second embodiment of the present invention;

FIG. 5 is a schematic diagram illustrating a water heating process of a washing machine according to a third embodiment of the present invention;

FIG. 6 is a schematic view illustrating a draining process of a washing machine according to a third embodiment of the present invention;

fig. 7 is a schematic view showing the structure of a heating unit in the drain valve assembly according to the present invention.

In the figure: 1. a box body; 2. a water containing barrel; 21. a water outlet; 3. a washing tub; 4. an upper cover; 5. a water bucket cover; 51. spraying holes; 6. a boom; 7. a circulation line; 8. a communicating pipeline; 9. a drainage device; 10. a drain valve assembly; 11. a valve body; 111. a first opening; 112. a second opening; 12. a heating chamber; 13. a valve chamber; 14. a first water passage port; 15. a second water vent; 16. a heating unit; 161. a heater; 1611. a heating section; 1612. a terminal portion; 162. a support portion; 17. a valve unit; 171. a valve plug; 172. a drive element; 18. a third water through hole; 19. a water pump; 20. an impeller.

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 7, the present invention provides a drain valve assembly, the drain valve assembly 10 includes a valve body 11, a first water passage port 14 and a second water passage port 15 are provided on the valve body 11, a drain chamber for guiding water from the first water passage port 14 to the second water passage port 15 is formed in the valve body 11, a valve unit 17 for connecting/disconnecting a water path between the first water passage port 14 and the second water passage port 15 is provided in the drain chamber, the drain chamber includes a heating chamber 12 and a valve chamber 13, the heating chamber 12 is communicated with the first water passage port 14, the valve chamber 13 is communicated with the second water passage port 15, the valve unit 17 is provided in the valve chamber 13, and a heating unit 16 for heating water is provided in the heating chamber 12.

Specifically, the drain valve assembly 10 with a heating function of the present invention is applicable to a conventional washing machine without a water heating function, and the washing machine generally includes a tub assembly including a water tub 2 and a washing tub 3, where the water tub 2 and the washing tub 3 are the same tub body or two different tub bodies, and the water tub 2 and the washing tub 3 are two different tub bodies as an example.

The drain valve assembly 10 is installed at the bottom of the tub 2, the first water passage port 14 communicates with the drain port 21 of the tub 2, and the second water passage port 15 communicates with the drain device 9 of the washing machine. In the process of washing the laundry, as shown in fig. 1, 3 and 5, the valve unit 17 is closed, the water path between the first water passage port 14 and the second water passage port 15 is cut off, that is, the water in the water tub 2 cannot be drained from the drainage device 9 through the second water passage port 15, and the water in the water tub 2 can enter the heating chamber 12 in the valve body 11 through the first water passage port 14, and after being heated by the heating unit 16 in the heating chamber 12, the water is recycled into the washing tub 3 to wash the laundry, and the purpose of heating the water in the washing tub 3 is achieved through the cyclic heating, so that the washing effect is further enhanced; in the draining process of the washing machine, as shown in fig. 2, 4 and 6, the valve unit 17 is opened to communicate the water path between the first water passage port 14 and the second water passage port 15, that is, the water in the tub 2 is drained by the draining device 9 after passing through the water path between the first water passage port 14 and the second water passage port 15, so as to control whether the water in the tub 2 is drained or not.

Compared with the prior art, the drain valve assembly 10 integrates the drain valve function and the heating function, relatively reduces the space occupancy rate of the heating device at the bottom of the water containing barrel 2, improves the space utilization efficiency of the bottom of the water containing barrel 2, and relatively reduces the influence of the additionally added heating device on the barrel balance.

In detail, the heating chamber 12 and the valve chamber 13 are integrally formed in the valve body 11. The valve body 11 is further provided with a first opening 111, the first opening 111 is communicated with the heating chamber 12, the heating unit 16 includes a heater 161 for heating water and a supporting portion 162 for supporting the heater 161, as shown in fig. 7, the heater 161 includes a heating portion 1611 and a terminal portion 1612, the heating portion 1611 is located inside the heating chamber 12 and is used for heating water in the heating chamber 12, the terminal portion 1612 passes through the supporting portion 162 and is located outside the heating chamber 12 and is connected with a control unit of the washing machine, the control unit controls the heating portion 1611 to be turned on and off, and the supporting portion 162 is connected with the first opening 111 in a sealing manner, so as to prevent water in the heating chamber 12 from leaking.

In some embodiments of the present invention, the supporting portion 162 is detachably connected to the first opening 111; preferably, the supporting portion 162 is a cover structure capable of closing the first opening 111, and is rotatably clamped or screwed with the first opening 111. With this structure, it is possible to facilitate replacement and maintenance of the heating unit 16, and also to facilitate cleaning of the inside of the heating chamber 12 by a user.

Further, the first opening 111 is provided at an end of the heating chamber 12 away from the valve chamber 13, and the heating unit 1611 extends from the first opening 111 toward the valve chamber 13, preferably, is provided near an inner wall of the heating chamber 12, or the heating unit 1611 is provided near the support portion 162.

In some embodiments of the present invention, the heating portion 1611 is a ring-shaped heating pipe structure or a heating pipe structure extending spirally or a heating rod structure extending toward the valve chamber 13;

preferably, the spirally extending heating pipe structure is laid on the end surface of the supporting portion 162 located inside the heating chamber 12, and spirally extends from the center to the outside along the circumference, or the spirally extending heating pipe structure extends from the supporting portion 162 to the valve chamber 13.

With the above-described structure, the heating area of the heating unit 16 can be increased in the limited space of the heating chamber 12, thereby improving the heating efficiency.

Further, a filtering portion for filtering the lint is arranged in the heating chamber 12, the filtering portion and the inner wall of the heating chamber 12 are matched to form a filtering chamber, the heating portion 1611 is located in the filtering chamber, so that the lint entrained in the water is prevented from adhering to the surface of the heating portion 1611 when the water in the water containing barrel 2 is heated in the heating chamber 12, the heating efficiency is reduced, and the service life of the heating portion 1611 is prolonged.

Preferably, a water path from the first water passage port 14 to the valve chamber 13 is configured to avoid the filter unit; preferably, the filter chamber is located on the outer periphery of the water path from the first water passage port 14 to the valve chamber 13, and with this structure, entanglement of the heating unit 16 with the lint in the water during drainage can be reduced, facilitating drainage of the lint.

In some embodiments of the present invention, the heating chamber 12 is a cylindrical structure having one end communicating with the valve chamber 13 for discharging water and the other end formed as a first opening 111 to which the heating unit 16 is mounted, and the peripheral wall of the heating chamber 12 includes a top wall, a bottom wall and a side wall, and the first water passage port 14 is provided on the top wall.

Preferably, the inner surface of the bottom wall of the heating chamber 12 is inclined downward from the distal end toward the valve chamber 13, and this structure allows the heating unit 16 to be easily maintained, and allows the washing water in the heating chamber 12 to flow toward the valve chamber 13 during draining, thereby allowing the washing water in the heating chamber 12 to be drained during draining, and preventing the growth of bacteria. .

Further, an annular seal portion is formed between the valve chamber 13 and the heating chamber 12, a passage communicating the heating chamber 12 and the valve chamber 13 is formed in a hollow portion of the annular seal portion, and the valve unit 17 opens and closes the passage.

Preferably, the valve body 11 is further provided with a second opening 112, the second opening 112 is communicated with the valve chamber 13, the second opening 112 is opposite to the sealing portion, the valve unit 17 includes a valve plug 171, a valve cover and a driving element 172, the valve plug 171 is located inside the valve chamber 13, the valve cover is connected with the second opening 112 in a sealing manner, the driving element 172 is located outside the valve cover to drive the valve plug 171 to move close to/away from the sealing portion for closing/opening a channel formed in the hollow portion of the sealing portion and communicating the heating chamber 12 with the valve chamber 13.

In some embodiments of the present invention, the drain valve assembly 10 further includes a water pump 19, as shown in fig. 3, the valve body 11 is provided with a third water through port 18, the water pump 19 is communicated with the heating chamber 12 through the third water through port 18, and is configured to provide power for the heated water to circulate to the washing tub 3 through a circulation device of the washing machine, so as to further improve circulation efficiency of heating water, and avoid that the drain valve is damaged due to too high local water temperature, and the local water temperature is too low to meet washing requirements.

Preferably, the first water passage port 14 is provided in a top wall of the heating chamber 12 and is located away from the valve chamber 13, and the third water passage port 18 is provided in a side wall of the heating chamber 12 and is located close to the valve chamber 13.

Preferably, the water inlet of the water pump 19 is directly connected with the third water through opening 18 in a sealing manner, or the water inlet of the water pump 19 is connected with the third water through opening 18 through a water guide pipe.

According to the drain valve assembly 10, the valve body 11 and the water pump 19 are assembled to form an integrated module, so that the mounting process is simplified, and the mounting time and cost are reduced; the first water through port 14 is a water inlet of the heating chamber 12, the third water through port 18 is a water outlet of the heating chamber 12, and the first water through port and the third water through port are arranged far away from the valve chamber 13, so that the distance between the first water through port and the third water through port can be maximized, the time for heating water to stay in the heating chamber 12 can be prolonged relatively, and the heating efficiency is improved.

The circulation device of the washing machine comprises a circulation pipeline 7, the circulation pipeline 7 is arranged on the outer side of the bucket wall of the water bucket 2 from bottom to top, the circulation pipeline 7 is provided with an inlet and an outlet, the inlet is communicated with a water outlet of a water pump 19, the outlet is communicated with a spraying hole 51 on the water bucket cover 5, and water in the water bucket 2 is pumped into the circulation pipeline 7 by the water pump 19 and returns to the washing bucket 3 through the spraying hole 51 after being heated in a heating chamber 12.

As an alternative to the above embodiment, the washing machine may be provided with no circulation duct 7, but with a communication duct 8 between the heating chamber 12 and the tub 2, as shown in fig. 5, the communication duct 8 is provided at the bottom of the tub 2, one end of the communication duct 8 communicates with the heating chamber 12 through the third water passage 18, and the other end communicates with the bottom of the tub 2, and the water in the tub 2 is pumped into the communication duct 8 by the water pump 19 to be returned to the tub 2 after being heated in the heating chamber 12.

Of course, as an alternative to the above embodiment, the drain valve assembly 10 may not be provided with the water pump 19 for cost saving, as shown in fig. 1, the hot water in the heating chamber 12 and the cold water in the tub 2 may be naturally convected by the driving of the temperature difference, so as to heat the water in the tub 2, and further, in order to enhance the convection strength, the operation of rotating the washing tub 3 and/or the pulsator 20 may be assisted during the heating process, so as to help the hot water in the heating chamber 12 to be rapidly exchanged with the water inside the tub 2.

The invention also provides a washing machine with the drainage valve assembly 10, which comprises a box body 1 and an upper cover 4 for opening and closing the upper end opening of the box body 1, wherein a barrel assembly is arranged in the box body 1, a hanging rod 6 for relieving the vibration of the washing barrel 3 is arranged between the barrel assembly and the box body 1, the washing machine further comprises a circulating device, the circulating device is provided with a water inlet end and a water outlet end, the barrel assembly is provided with a water outlet 21, the first water inlet 14 is communicated with the water outlet 21, the water inlet end of the circulating device is communicated with the heating chamber 12, and the water outlet end is used for circularly supplying water to the barrel assembly.

Specifically, the bucket assembly comprises a water containing bucket 2 and a washing bucket 3, the water containing bucket 2 and the washing bucket 3 are the same bucket body or two different bucket bodies, and the water outlet 21 is arranged at the bottom of the water containing bucket 2.

As shown in fig. 1 and 2, in the first embodiment of the present invention, the valve assembly does not include the water pump 19, the valve assembly is installed at the bottom of the tub 2, the first water passage port 14 communicates with the drain port 21 of the tub 2, the second water passage port 15 communicates with the drain device 9 of the washing machine, the valve unit 17 is closed during washing of laundry in the washing machine, the water path between the first water passage port 14 and the second water passage port 15 is cut off, that is, the water in the tub 2 cannot be drained by the draining means 9 through the second water passage port 15, and the water in the tub 2 can enter the heating chamber 12 in the valve body 11 through the first water passage port 14, after being heated by the heating unit 16 in the heating chamber 12, natural convection between the cold water and the hot water is generated under the action of temperature difference with the cold water in the water tub 2, so that the purpose of heating the water in the water tub 2 is realized, and the purpose of enhancing the washing effect is further achieved; in the draining process of the washing machine, the valve unit 17 is opened to communicate the water path between the first water passage port 14 and the second water passage port 15, that is, the water in the water tub 2 is drained by the draining device 9 after passing through the water path between the first water passage port 14 and the second water passage port 15, so that the purpose of controlling whether the water in the water tub 2 is drained or not is achieved.

Further, in order to enhance the convection intensity, the heating may be assisted by the rotation of the washing tub 3 and/or the rotation of the pulsator 20 to facilitate the hot water in the heating chamber 12 to be rapidly exchanged with the water inside the tub 2.

As shown in fig. 3 and 4, in the second embodiment of the present invention, unlike the first embodiment, the valve assembly includes a water pump 19, the circulation device of the washing machine includes a circulation duct 7, the circulation duct 7 is disposed outside the tub wall of the tub 2 from bottom to top, the circulation duct 7 has an inlet and an outlet, the inlet is communicated with the water outlet of the water pump 19, the outlet is communicated with the shower holes 51 of the tub cover 5, and water in the tub 2 is heated in the heating chamber 12 and pumped by the water pump 19 into the circulation duct 7 to return to the washing tub 3 through the shower holes 51.

As shown in fig. 5 and 6, in the third embodiment of the present invention, unlike the first embodiment, the laundry machine includes a communication pipe 8 provided between the heating chamber 12 and the tub 2, the communication pipe 8 is provided at the bottom of the tub 2, one end of the communication pipe 8 communicates with the heating chamber 12 through the third water passing port 18, and the other end communicates with the bottom of the tub 2, and water in the tub 2 is circulated through the communication pipe 8 and water in the tub 2 after being heated in the heating chamber 12.

In the fourth embodiment of the present invention, different from the above third embodiment, the valve assembly includes a water pump 19, and the water in the tub 2 is heated in the heating chamber 12 and pumped into the communication pipe 8 by the water pump 19 to be returned to the tub 2.

The invention installs the drain valve component 10 with heating function at the bottom of the water bucket 2, which is communicated with the drain port 21, the water in the water bucket 2 is heated in the heating chamber 12 of the drain valve component 10, and then is sent into the washing bucket 3 through the circulating device, and the purpose of heating the water in the water bucket 2 is realized through the circulating heating mode. Compared with the prior art, the space occupancy rate of the barrel bottom is relatively reduced, the space utilization efficiency of the barrel bottom is improved, and the influence of additionally adding a heating device on barrel balance is relatively reduced.

The above embodiments are only preferred embodiments of the present invention, and not intended to limit the present invention in any way, and although the present invention has been disclosed by the preferred embodiments, it is not intended to limit the present invention, and those skilled in the art can make various changes and modifications to the equivalent embodiments by using the technical contents disclosed above without departing from the technical scope of the present invention, and the embodiments in the above embodiments can be further combined or replaced, but any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention still fall within the technical scope of the present invention.

Claims (10)

1. The utility model provides a drain valve subassembly, includes the valve body, be equipped with first limbers and second limbers on the valve body, be formed with in the valve body certainly first limbers to the drainage cavity of second limbers water guide, be equipped with in the drainage cavity and be used for the intercommunication/disconnection first limbers with the valve unit in water route between the second limbers, its characterized in that: the drainage cavity comprises a heating cavity and a valve cavity, the heating cavity is communicated with the first water through port, the valve cavity is communicated with the second water through port, the valve unit is arranged in the valve cavity, and a heating unit for heating water is arranged in the heating cavity.

2. The drain valve assembly of claim 1, wherein: the heating chamber and the valve chamber are integrally formed within the valve body.

3. The drain valve assembly of claim 1, wherein: the valve body is further provided with a first opening, the first opening is communicated with the heating chamber, the heating unit comprises a heater and a supporting portion for supporting the heater, the heater comprises a heating portion and a terminal portion, the heating portion is located in the heating chamber, the terminal portion penetrates through the supporting portion and is located outside the heating chamber, and the supporting portion is connected with the first opening in a sealing mode.

4. A drain valve assembly according to claim 3, wherein: the supporting part is detachably connected with the first opening;

preferably, the supporting part is a cover body structure and is in rotary clamping connection or threaded connection with the first opening.

5. A drain valve assembly according to claim 3, wherein: the first opening is arranged at one end of the heating chamber far away from the valve chamber, and the heating part extends from the first opening to the direction of the valve chamber, preferably to be close to the inner wall of the heating chamber, or to be close to the supporting part;

preferably, the heating part is of a ring-shaped heating pipe structure, or of a heating pipe structure extending spirally, or of a heating rod structure extending towards the valve chamber;

preferably, the heating pipe structure arranged in a spiral extending manner is laid on the end face of the supporting portion located at the inner side of the heating chamber and extends spirally outwards from the center along the circumference, or the heating pipe structure arranged in a spiral extending manner extends from the supporting portion to the direction of the valve chamber.

6. A drain valve assembly according to any one of claims 3 to 5, wherein: a filtering part is arranged in the heating cavity, the filtering part is matched with the inner wall of the heating cavity to form a filtering cavity, and the heating part is positioned in the filtering cavity;

preferably, a waterway from the first water passage port to the valve chamber is avoided from the filter part;

preferably, the filter chamber is located on the outer periphery of a waterway from the first water passage port to the valve chamber.

7. A drain valve assembly according to any one of claims 1 to 6, wherein: the heating chamber is of a cylindrical structure, one end of the heating chamber is communicated with the valve chamber, the other end of the heating chamber is formed into the first opening, the peripheral wall of the heating chamber comprises a top wall, a bottom wall and a side wall, the first water through opening is formed in the top wall, and preferably, the inner surface of the bottom wall of the heating chamber is inclined downwards from the far end to the direction close to the valve chamber.

8. The drain valve assembly of claim 1, wherein: an annular sealing part is formed between the valve chamber and the heating chamber, a channel for communicating the heating chamber and the valve chamber is formed in the hollow part of the annular sealing part, and the valve unit opens and closes the channel.

9. A drain valve assembly according to any one of claims 1 to 8, wherein: the water pump is communicated with the heating chamber through the third water through hole;

preferably, the first water passage port is arranged on the top wall of the heating chamber and is far away from the valve chamber, and the third water passage port is arranged on the side wall of the heating chamber and is close to the valve chamber;

preferably, the water inlet of the water pump is directly connected with the third water through opening in a sealing manner, or the water inlet of the water pump is connected with the third water through opening by a water guide pipe.

10. A washing machine having the drain valve assembly as claimed in any one of claims 1 to 9, comprising a tub assembly and a circulation device having a water inlet end and a water outlet end, the tub assembly having a drain outlet, characterized in that: the first water through port is communicated with the water outlet, the water inlet end of the circulating device is communicated with the heating cavity, and the water outlet end of the circulating device is used for circularly supplying water to the barrel assembly.

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