CN217026418U - Detergent feeding device and washing machine - Google Patents

Abstract

The utility model provides a detergent feeding device and a washing machine, wherein the detergent feeding device comprises: the device comprises a throwing cavity, at least one first cavity is arranged in the throwing cavity, and throwing liquid is stored in the first cavity; the constant-volume cavity is communicated with the first cavity through a liquid suction pipe and is arranged above the first cavity; one end of the Venturi tube device is communicated with the constant volume cavity, and the other end of the Venturi tube device is communicated with the water inlet valve; the constant volume cavity flushing port is communicated with the constant volume cavity, and the constant volume cavity flushing port is communicated with the water inlet valve. The detergent feeding device is reasonable in structure, easy to realize, small in structural change of the existing device, accurate and reliable in detergent feeding amount control, and greatly improves the cleaning rate of clothes washing.

Description

Detergent feeding device and washing machine

Technical Field

The utility model relates to the technical field of detergent putting in of washing machines, in particular to a detergent putting device and a washing machine.

Background

At present, washing machines with automatic putting functions are released by various washing machine manufacturers, intelligent addition of detergent can be achieved by the washing machines, manual addition of the detergent by users is avoided, and the washing machines are more convenient and good in use feeling. With the advancement of technology and the increasing perfection of functions of washing machines, users have higher and higher requirements on the technology for automatically putting detergent into the washing machines. The detergent putting device in the related art generally adopts a piston pump, a centrifugal pump, a peristaltic pump, an electromagnetic valve and the like, and the detergent is directly put in the water bucket, but the detergent put in the mode is poor in water flow mixing effect, so that the washing performance is influenced, and the clothes can be damaged due to the direct contact of the detergent and the clothes. In addition, the detergent feeding device is complex in structure and high in cost.

In the prior art, the design of the automatic detergent feeding device of the washing machine is mainly based on two ideas: firstly, by utilizing the layout of a water inlet pipe and a detergent feeding pipeline, when the inflow water flows, a detergent adding pipeline generates a Venturi tube effect, and the detergent is sucked into the feeding pipe by utilizing the generated negative pressure to be fed; and the other is a device which adopts various liquid pumps as pumps to put in the detergent. According to the automatic detergent feeding device designed according to the above thought, the fed detergent is difficult to accurately measure. The viscosity difference of the detergent at different temperatures is large, when the environmental temperature is low, the viscosity of the detergent is large, and the rotating speed of a driving motor of the automatic adding device is reduced and the adding amount is reduced due to the increase of the load; when the ambient temperature is higher, the viscosity of the detergent is low, and the driving motor of the automatic adding device increases the rotating speed and the adding amount due to the reduction of the load, so that the detergent adding amount is difficult to accurately measure.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a detergent feeding device and a washing machine, so as to solve at least one of the problems in the prior art that the detergent feeding depends on electrical components, the structure is complex, the cost is high, and the control of the detergent feeding amount is not accurate.

In order to achieve the purpose, the technical scheme of the utility model is realized as follows:

a detergent dispensing device comprising:

the device comprises a throwing cavity, at least one first cavity and a throwing liquid, wherein the throwing cavity is internally provided with at least one first cavity;

the constant-volume cavity is communicated with the first cavity through a liquid suction pipe and is arranged above the first cavity;

one end of the Venturi tube device is communicated with the constant volume cavity, and the other end of the Venturi tube device is communicated with the water inlet valve;

and the constant volume cavity flushing port is communicated with the constant volume cavity, and the constant volume cavity flushing port is communicated with the water inlet valve.

Further, the Venturi tube device comprises a first Venturi tube structure and a second Venturi tube structure to form a double-negative-pressure feeding device, the first water inlet pipe mouth of the first Venturi tube structure is communicated with a water inlet valve, the throat part of the first Venturi tube structure is communicated with the constant volume cavity through a first negative pressure pipe, a second water inlet pipe orifice of the second Venturi tube structure is communicated with a water inlet valve, the throat part of the second Venturi tube structure is communicated with the constant volume cavity through a second negative pressure pipe, a float valve is arranged in the first negative pressure pipe, a liquid discharge one-way valve is arranged in the second negative pressure pipe, a liquid suction one-way valve is arranged in the liquid suction pipe, when the water inlet valve feeds water to the first Venturi tube structure through the first water inlet pipe opening, the second Venturi tube structure is in a turn-off state, and the constant volume cavity extracts the liquid put in the first cavity through the liquid suction tube; the water inlet valve passes through the second water inlet pipe mouth is in the turn-off state to the second venturi structure when intaking, and the second venturi structure passes through the second negative pressure pipe and extracts the input liquid in the constant volume intracavity.

Furthermore, the detergent feeding device further comprises a drawer box base and a drawer box cover plate, a feeding cavity is formed between the drawer box base and the drawer box cover plate, a detergent cover plate and a top cover plate are sequentially arranged above the drawer box cover plate, a fixed cavity is formed between the top cover plate and the detergent cover plate, and a constant volume cavity flushing opening is formed in the top cover plate.

Furthermore, the water inlet valve comprises at least three water outlets, one of the water outlets is communicated with the first water inlet pipe orifice through a first water inlet pipeline, the second water outlet is communicated with the constant volume cavity flushing port through a second water inlet pipeline, and the third water outlet is communicated with the second water inlet pipe orifice through a third water inlet pipeline.

Furthermore, the water inlet valve comprises at least two water outlets, and the two water outlets of the water inlet valve are respectively connected with the first water inlet pipe orifice, the second water inlet pipe orifice and the constant volume cavity flushing port through the reversing valve.

Furthermore, the reversing valve comprises a reversing valve casing and a reversing valve cover, one end of the reversing valve casing is connected with the three-way valve, the three-way valve is provided with three ports, one of the three ports is connected with a water inlet pipe opening I, the other port is connected with a water outlet I, the third port is fixedly connected with the reversing valve casing through a guide hole, a water inlet pipe opening II and a water outlet II are arranged on the reversing valve casing, a water outlet III is arranged on the reversing valve cover, the reversing valve core penetrates through the guide hole, one end of the reversing valve core is connected with the thin film valve block, the thin film valve block is arranged at one end of the three-way valve, one end of the reversing valve core is provided with the reversing valve plug, the reversing valve plug is arranged in the reversing valve casing, the thin film valve block can drive the reversing valve core and the reversing valve plug to move upwards to block the water outlet III when the thin film valve block has no water in the three-way valve, the first water outlet, the second water outlet and the third water outlet are arranged in a structure of being lower, middle and upper in the vertical direction, the first water outlet is communicated with the second water inlet pipe orifice through an eleventh water inlet pipeline, the second water outlet is communicated with the constant volume cavity flushing orifice through a second decimal water pipeline, and the third water outlet is communicated with the first water inlet pipe orifice through a ninth water inlet pipeline.

The utility model also discloses a washing machine, and the washing machine is provided with the detergent feeding device.

The utility model also discloses a second washing machine, which comprises two detergent putting devices, namely a first putting device and a second putting device, wherein the first putting device and the second putting device are respectively connected with a water inlet valve, the water inlet valve comprises four water outlets, two water outlets are respectively communicated with a first water inlet pipe orifice and a second water inlet pipe orifice on the first putting device through a first water inlet pipeline and a third water inlet pipeline, and the other two water outlets are respectively communicated with a first water inlet pipe orifice and a second water inlet pipe orifice on the second putting device through a fourth water inlet pipeline and a fifth water inlet pipeline.

The utility model also discloses a third washing machine, which comprises two detergent putting devices, namely a first putting device and a second putting device, wherein the first putting device and the second putting device are connected with a water inlet valve, the water inlet valve comprises three water outlets, the two water outlets are respectively connected with a first water inlet pipe orifice on the first putting device and a first water inlet pipe orifice on the second putting device through a first water inlet pipeline and a fourth water inlet pipeline, and the third water outlet is simultaneously communicated with a second water inlet pipe orifice on the first putting device and a second water inlet pipe orifice on the second putting device through a sixth water inlet pipeline.

Furthermore, the water inlet valve further comprises a fourth water outlet, and the fourth water outlet is communicated with the constant volume cavity on the first throwing device and/or the constant volume cavity on the second throwing device through a twelfth water inlet pipeline.

Compared with the prior art, the detergent feeding device and the washing machine have the following advantages:

(1) the detergent feeding device is reasonable in structure, easy to achieve, small in structural change, accurate and reliable in detergent feeding amount control and capable of greatly improving the cleaning rate of clothes washing.

(2) According to the detergent feeding device and the washing machine, the structure for extracting and feeding the detergent is improved, the constant-volume extraction and feeding of the detergent are respectively realized by adopting the double-negative-pressure Venturi tube structure, the feeding structure is simplified, electric elements are reduced, the reliability and stability of the operation of extracting and feeding the detergent are improved, and the production cost is reduced. Through improving the water inlet structure, a working condition that a constant volume cavity extracts the liquid in the first cavity, a working condition that the constant volume cavity puts in the washing liquid in the putting cavity and a cleaning working condition of the constant volume cavity are realized on a single double-negative-pressure putting device or a working condition that the constant volume cavity extracts the liquid in the first cavity, the constant volume cavity puts in the washing liquid in the putting cavity and the cleaning working condition of the constant volume cavity are realized by adopting a plurality of water outlet water inlet valves such as a double-water-outlet water inlet valve, a three-water-outlet water inlet valve and a four-water-outlet water inlet valve according to requirements.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation of the utility model. In the drawings:

FIG. 1 is a schematic diagram of a detergent dispensing device according to an embodiment of the present invention;

FIG. 2 is a schematic side view of a detergent dispensing device according to an embodiment of the present invention;

FIG. 3 is a schematic view of the structure of FIG. 2 with the top cover plate removed;

FIG. 4 is a schematic top view of the structure of FIG. 3;

FIG. 5 is a schematic diagram of a second principle of a detergent dispensing device according to an embodiment of the present invention;

FIG. 6 is a schematic diagram illustrating a third principle of a detergent dispensing device according to an embodiment of the present invention;

fig. 7 is a fourth schematic diagram of a detergent dispensing device according to an embodiment of the present invention;

fig. 8 is a schematic diagram of a fifth principle of a detergent dispensing device according to an embodiment of the present invention;

description of the reference numerals:

100. a double negative pressure delivery device; 101. a first throwing device 102, a second throwing device 1 and a first Venturi tube structure; 2. a first negative pressure tube; 3. a float valve; 4. a holding cavity is fixed; 5. a liquid suction one-way valve; 6. a pipette; 7. a liquid discharge check valve; 8. a second negative pressure tube; 9. a second water inlet pipe orifice; 10. a second venturi structure; 11. a second water outlet; 12. a long drainage pipe; 13. putting in a cavity; 14. a first chamber; 15. a main drain pipe orifice; 16. a second chamber; 17. a water leakage port; 20. a first water outlet; 21. a first water inlet pipe orifice; 23. a top cover plate; 24. a housing; 25. a front plate; 26. a handle; 27. a detergent cover plate; 28. a drawer box cover plate; 29. a drawer box base; 31. a constant volume cavity flushing port; 200. a diverter valve; 201. a first water inlet pipe orifice; 202. a three-way valve; 203. a first water outlet; 204. a thin film valve plate; 205. a water outlet II; 206. a reversing valve shell; 207. a reversing valve core; 208. a reversing valve plug; 209. a water outlet III; 210. a reversing valve cover; 211. a second water inlet pipe orifice; 212. a guide hole; 213. a ninth water inlet pipeline; 214. a tenth water line; 215. an eleventh water inlet line; 300. a water inlet valve; 301. a first water inlet pipeline; 302. a second water inlet pipeline; 303. a third water inlet pipeline; 304. a fourth water inlet pipeline; 305. a fifth water inlet pipeline; 306. a sixth water inlet pipeline; 307. a seventh water inlet pipeline; 308. an eighth water inlet pipeline; 309. a twelfth water inlet pipeline.

Detailed Description

In order to make the technical means, objectives and functions of the present invention easy to understand, the following detailed description of the embodiments of the present invention with reference to the specific drawings.

It should be noted that all terms used in the present invention for directional and positional indication, such as: the terms "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", "top", "lower", "transverse", "longitudinal", "center", and the like are used only for explaining the relative positional relationship, the connection, and the like between the respective members in a certain state (as shown in the drawings), and are only for convenience of describing the present invention, and do not require that the present invention must be constructed and operated in a certain orientation, and thus, should not be construed as limiting the present invention. In addition, the descriptions related to "first", "second", etc. in the present invention are 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.

In the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; may be a mechanical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.

In the description of the present specification, reference to the description of "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Example 1

As shown in fig. 1 to 4, the present invention discloses a detergent dispensing device, comprising:

a throwing cavity 13, at least one first chamber 14 is arranged in the throwing cavity 13, and throwing liquid is stored in the first chamber 14;

the constant volume cavity 4 is communicated with the first cavity 14 through a liquid suction pipe 6, and the constant volume cavity 4 is arranged above the first cavity 14;

one end of the Venturi tube device is communicated with the fixed cavity 4, and the other end of the Venturi tube device is communicated with the water inlet valve 300;

the constant volume cavity flushing port 31 is communicated with the constant volume cavity 4, and the constant volume cavity flushing port 31 is communicated with the water inlet valve 300.

The utility model discloses a detergent putting device which is used for accurately measuring the putting amount of a detergent through an arranged constant volume cavity 4, realizes the absorption and putting of the detergent in the constant volume cavity 4 through the arranged Venturi tube structure and the water inlet control of a water inlet valve 300, is provided with a constant volume cavity flushing port 31 on the constant volume cavity 4, is communicated with the water inlet valve 300, and can flush the detergent in the constant volume cavity 4 through the constant volume cavity flushing port 31 under the control action of the water inlet valve 300, so that the detergent in the constant volume cavity 4 is completely put into a washing barrel, the problems of inaccurate putting amount and possible pollution caused by the fact that viscous detergent remains in the constant volume cavity are avoided, and the purposes of accurate control of the putting amount and reliable washing effect are achieved.

The utility model discloses a detergent feeding device which is reasonable in structure, easy to realize, small in change of the existing structure, accurate and reliable in detergent feeding amount control and capable of greatly improving the cleaning rate of clothes washing.

As a preferred example of the present invention, the venturi tube device includes a first venturi tube structure 1 and a second venturi tube structure 10, forming a double negative pressure dispensing device 100, a first water inlet pipe 21 of the first venturi tube structure 1 is communicated with a water inlet valve 300, a throat portion of the first venturi tube structure 1 is communicated with a constant volume chamber 4 through a first negative pressure pipe 2, after water is introduced from the first water inlet pipe 21, the water flows to a washing tub or a dispensing chamber 13 through a first water outlet 20, a second water inlet pipe 9 of the second venturi tube structure 10 is communicated with the water inlet valve 300, a throat portion of the second venturi tube structure 10 is communicated with the constant volume chamber 4 through a second negative pressure pipe 8, a ball float valve 3 is disposed inside the first negative pressure pipe 2, a liquid discharge one-way valve is disposed inside the second negative pressure pipe 8, a liquid discharge one-way valve 5 is disposed inside the liquid suction one-way valve 6, when water is introduced from the first water inlet valve 300 to the first water inlet valve 21, the second Venturi tube structure 10 is in a turn-off state, and the constant volume cavity 4 extracts the thrown liquid in the first cavity 14 through the liquid suction tube 6; when the water inlet valve 300 feeds water into the second venturi tube structure 10 through the second water inlet pipe orifice 9, the first venturi tube structure 1 is in a turn-off state, and the second venturi tube structure 10 extracts the input liquid in the fixed cavity 4 through the second negative pressure pipe 8.

Preferably, the float valve 3, the liquid suction one-way valve 5 and the liquid discharge one-way valve 7 are all valves including floating balls, the density of the floating balls in the float valve 3 is smaller than that of the liquid put in the fixed volume cavity 4, the density of the floating balls in the liquid suction one-way valve 5 is larger than that of the liquid put in the fixed volume cavity 4, and the density of the floating balls in the liquid discharge one-way valve 7 is larger than that of the liquid put in the fixed volume cavity.

The working principle of the structure is as follows:

the first water inlet pipe orifice 21 is used for water inflow and enters the first venturi tube structure 1, the first negative pressure pipe 2 generates negative pressure, the ball float valve 3 in the first negative pressure pipe 2 is opened, the liquid drainage one-way valve 7 in the second negative pressure pipe 8 is closed, the liquid suction one-way valve 5 in the liquid suction pipe 6 is opened, liquid is sucked and put in from the first cavity 14, and the liquid enters the constant volume cavity 4. When the dosing liquid is filled in the dosing cavity 4, or the dosing cavity 4 absorbs a certain amount of the dosing liquid, the float valve in the liquid suction pipe 6 is closed. At this time, the first water inlet pipe mouth 21 continues to feed water, only water is fed, and the fed liquid does not enter the fixed cavity 4 any more.

Close the intaking of first water inlet pipe mouth 21, open second water inlet pipe mouth 9 and intake, second venturi structure 10 begins work, and flowing back check valve 7 in the second negative pressure pipe 8 is opened, and imbibition check valve 5 in the pipette 6 closes, decide the input liquid in the chamber 4 and be inhaled second venturi structure 10, then intake along with second water inlet pipe mouth 9, input liquid enters into and puts in the chamber 13.

Through the venturi that adopts two negative pressures, realize that the washing liquid passes through the work of first venturi structure 1 and quantitatively extracts in constant volume chamber 4 in to constant volume chamber 4 in the first cavity 14, absorb the input liquid in constant volume chamber 4 through the work of second venturi structure 10 and put in to putting in and hold the chamber 13 in, form the automatic subassembly of putting in of two venturi negative pressure, constant volume chamber flushing port 31 through setting up on constant volume chamber 4 and water intaking valve 300 intercommunication, realize putting in the washing after the liquid is put in constant volume chamber 4, and can realize the constant volume that the liquid was put in the extraction through the relative setting of floater density and input liquid density, moreover, the steam generator is simple in structure, the constant volume is accurate reliable, thereby reach the automatic control structure of putting in of detergent greatly simplified, and reduce production cost, control accurate input purpose.

As a preferred example of the present invention, a second chamber 16 is disposed in the dosing cavity 13, the second chamber 16 is used for dosing washing powder, and a water leakage port 17 is disposed at the bottom of the second chamber 16.

The detergent feeding device can automatically feed washing liquid, wherein the washing liquid and the feeding liquid are the same product or the same product, and can feed washing powder, so that the multifunctional requirement of the detergent feeding device is met.

As a preferred example of the present invention, the second water outlet 11 of the second venturi structure 10 communicates with the dosing chamber 13 through a long drain pipe 12.

This setting makes the effect that the washing liquid that flows into the constant volume chamber 4 in the throwing liquid of constant volume intracavity passes through second venturi structure 10, long drain pipe 12, even when stopping intaking, long drain pipe 12 also can produce the siphon effect, and then the evacuation of constant volume chamber 4.

As a preferred example of the present invention, a main drain pipe opening 15 is provided at the bottom of the dosing chamber 13 to facilitate the flow of the dosing liquid or water in the dosing chamber 13 to the washing tub.

As a preferred example of the present invention, the washing liquid stored in the first chamber 14 is any one of liquid detergents such as detergent, softener, detergent, bleaching agent, disinfectant, etc.

As an example of the present invention, the feeding cavity 13 may be a drawer cavity or a cavity integrated on a washing machine. Preferably, the detergent feeding device further comprises a drawer box base 29 and a drawer box cover plate 28, a feeding cavity 13 is formed between the drawer box base 29 and the drawer box cover plate 28, a detergent cover plate 27 and a top cover plate 23 are sequentially arranged above the drawer box cover plate 28, the fixed cavity 4 is formed between the top cover plate 23 and the detergent cover plate 27, and the fixed cavity flushing port 31 is formed in the top cover plate 23.

The arrangement facilitates the integration and application of the detergent putting device, and ensures the reliable use of the detergent putting device.

As a preferred example of the present invention, a front plate 25 is provided at the front end of the drawer base 29, and a handle 26 is provided on the front plate 25.

The arrangement is convenient for the drawer box assembly to be quickly and conveniently pulled open or pushed in as required when in use.

Preferably, an outer casing 24 is disposed outside the drawer base 29, and the outer casing 24 covers the drawer base 29 and is connected to the detergent cover 27 in a snap-fit manner.

The deformation of the drawer assembly caused by external force when in use is avoided, and the reliability of the drawer box assembly when in use is improved.

Preferably, the top cover 23 is detachably connected to the detergent cover 27 and/or the drawer cover 28 and/or the housing 24. As an example of the present invention, the top cover plate 23 and the detergent cover plate 27 are coupled by screws.

As a preferred example of the present invention, the inlet valve 300 comprises at least three outlets, wherein one outlet is connected to the first inlet pipe 21 via a first inlet pipe 301, a second outlet is connected to the constant volume chamber flushing port 31 via a second inlet pipe 302, and a third outlet is connected to the second inlet pipe via a third inlet pipe 303.

When the device is used, the water inlet valve 300 can independently feed water into the first water inlet pipeline 301, the second water inlet pipeline 302 and the third water inlet pipeline 303, so that the working condition that liquid is fed into the first cavity 14 extracted from the fixed volume cavity 4 in the double-negative-pressure feeding device 100, the working condition that washing liquid is fed into the fixed volume cavity 4 in the feeding cavity 13 and the cleaning working condition of the fixed volume cavity 4 are achieved, the structure is simple, the device is easy to process and control, and the purpose of improving the accuracy of feeding amount control is achieved.

Example 2

As shown in fig. 1 to 5, the present invention discloses a detergent feeding device, further comprising:

the reversing valve 200 comprises a water inlet end and a water outlet end, the water inlet end is communicated with the water inlet valve 300, the water inlet end comprises at least two water inlet pipe orifices, namely a water inlet pipe orifice I201 and a water inlet pipe orifice II 211, the water outlet end comprises three water outlets, namely a water outlet I203, a water outlet II 205 and a water outlet III 209, the water outlet I203, the water outlet II 205 and the water outlet III 209 are arranged in a structure that the water outlets are arranged in a vertical direction in a vertical middle-upper mode, the water outlet I203 is communicated with the second water inlet pipe orifice 9 through an eleventh water inlet pipeline 215, the water outlet II 205 is communicated with the constant volume cavity flushing port 31 through a tenth water pipeline 214, the water outlet III 209 is communicated with the first water inlet pipe orifice 21 through a ninth water inlet pipeline 213, a communication pipeline is arranged between the water inlet end and the water outlet end, a valve core device is arranged in the communication pipeline, and the valve core device in the reversing valve 200 is arranged according to the position that the water inlet pipe orifice I201, The water inlet state of the second water inlet pipe orifice 211 and the opening and closing states of the first water pressure adjusting outlet 203, the second water outlet 205 and the third water outlet 209 are the same as those of embodiment 1.

The embodiment discloses a second detergent feeding device, and a reversing valve 200 is arranged between a double-negative-pressure feeding device 100 and a water inlet valve 300, so that the water inlet valve 300 can simultaneously realize the working condition that a fixed volume cavity 4 in the double-negative-pressure feeding device 100 extracts liquid fed into a first cavity 14, the working condition that a fixed volume cavity 4 feeds washing liquid into a feeding cavity 13 and the cleaning working condition of the fixed volume cavity 4 through two water inlets, the improvement of the existing structure is reduced, and the applicability of the detergent feeding device is improved.

As a preferred example of the present invention, the reversing valve 200 includes a reversing valve housing 206, a reversing valve cover 210, one end of the reversing valve housing 206 is connected to a three-way valve 202, the three-way valve 202 has three ports, one of which is connected to a first water inlet pipe 201, the other is connected to a first water outlet 203, the third is fixedly connected to the reversing valve housing 206 through a guide hole 212, the reversing valve housing 206 has a second water inlet pipe 211 and a second water outlet 205, the reversing valve cover 210 has a third water outlet 209, a reversing valve 207 passes through the guide hole 212, one end of the reversing valve 207 is connected to a membrane valve sheet 204, the membrane valve sheet 204 is disposed at one end of the three-way valve 202, one end of the reversing valve 207 is disposed with a reversing valve plug 208, the reversing valve plug 208 is disposed in the reversing valve housing 206, the membrane valve sheet 204 can drive the reversing valve 207 and the reversing valve plug 208 to move upward to block the third water outlet 209 when water enters the three-way valve housing 202, the membrane valve plate 204 can drive the reversing valve core 207 and the reversing valve plug 208 to move downwards to plug the second water outlet 205 when the three-way valve 202 is empty of water.

Specifically, when the first water inlet pipe opening 201 is filled with water, the first water outlet opening 203 is filled with water. The water flow generates pressure in the three-way valve 202, so that the membrane valve plate 204 generates upward pressure to push the reversing valve core 207 and the reversing valve plug 208 integrated with the membrane valve plate to move upwards to block a channel leading to the third water outlet 209 and open a channel leading to the second water outlet 205, and when water enters from the second water inlet pipe opening 211, the water flow flows out from the second water outlet 205.

When water does not enter the first water inlet pipe orifice 201, no pressure exists in the three-way valve 202, the membrane valve plate 204 and the reversing valve core 207 and the reversing valve plug 208 which are integrated with the membrane valve plate move downwards under the action of gravity or other pre-pressure spring force to block a channel leading to the second water outlet 205 and open a channel leading to the third water outlet 209, and when water enters the second water inlet pipe orifice 211, water flows out from the third water outlet 209 to realize the reversing function.

Through the switching-over valve of this setting, through the break-make of the different water inlet pipe mouths in adjusting the switching-over valve for the water inlet pipe mouth of difference intakes, thereby change switching-over valve plug 208's in the case device shutoff position, adjust the play water state of outlet end delivery port, make different delivery ports go out water, and then accomplish and decide putting in liquid operating mode in the chamber 4 extraction first cavity 14, constant volume chamber 4 is to putting in the washing operating mode that puts in washing liquid operating mode, constant volume chamber 4 in the appearance chamber 13.

The working principle is as follows:

s1, only opening the second port of the water inlet valve 300, enabling water flow to enter a second water inlet pipe mouth 211 of the reversing valve through a seventh water inlet pipe 307, and then communicating the water flow from a third water outlet 209 with a first water inlet pipe mouth 21 on the first Venturi tube structure 1 through a ninth water inlet pipe 213, so that the thrown liquid in the first cavity 14 can be sucked into the constant volume cavity 4;

s2, in the state of S1, the liquid is put in the constant volume cavity 4. Closing the second path of the water inlet valve 300, only opening the first path, connecting the water flow with a first water inlet pipe orifice 201 of the reversing valve through an eighth water inlet pipeline 308, and then connecting the water flow with a second water inlet pipe orifice 9 on a second Venturi tube structure from a first water outlet 203 through an eleventh water inlet pipeline 215 to discharge the liquid put in the constant volume cavity 4;

s3, in the state of S2, the inside of the constant volume cavity 4 is empty. First, the second path of water inlet of the inlet valve 300 is opened, when water enters from the first inlet pipe orifice 201, water exits from the first outlet 203, so that the membrane valve plate 204 generates upward pressure to push the reversing valve core 207 and the reversing valve plug 208 integrated with the membrane valve plate to move upwards to block a channel leading to the third outlet 209, at this time, the first path of water inlet of the inlet valve 300 is opened, and when water enters from the second inlet pipe orifice 211, water exits from the second outlet 205, so that the fixed cavity 4 is flushed.

The whole machine has the functions that the detergent is in a storage type and is automatically put in according to a program, and the washing powder and the softening agent are put in once and are used once.

Example 3

As shown in fig. 1 to 6, the present invention discloses a detergent feeding device, which includes two double negative pressure feeding devices 100, namely a first feeding device 101 and a second feeding device 102, wherein the double negative pressure feeding devices 100 have the same structure as that in embodiment 1, the two double negative pressure feeding devices 100 are connected to a water inlet valve 300, the water inlet valve 300 includes four water outlets, two of the water outlets are respectively communicated with a first water inlet pipe orifice 21 and a second water inlet pipe orifice 9 of the first feeding device 101 through a first water inlet pipeline 301 and a third water inlet pipeline 303, and the other two water outlets are respectively communicated with the first water inlet pipe orifice 21 and the second water inlet pipe orifice 9 of the second feeding device 102 through a fourth water inlet pipeline 304 and a fifth water inlet pipeline 305. The contents of embodiments 1 and 2 can be referred to for the rest of the structure.

Example 4

As shown in fig. 1 to 7, the utility model discloses a detergent feeding device, which includes two double negative pressure feeding devices 100, the double negative pressure feeding devices 100 have the same structure as that in embodiment 1, the two double negative pressure feeding devices 100 are connected to a water inlet valve 300, the water inlet valve 300 includes three water outlets, wherein the two water outlets are respectively connected to a first water inlet pipe orifice 21 on the first feeding device 101 and a first water inlet pipe orifice 21 on the second feeding device 102 through a first water inlet pipeline 301 and a fourth water inlet pipeline 304, the third water outlet is simultaneously connected to a second water inlet pipe orifice 9 on the first feeding device 101 and a second water inlet pipe orifice 9 on the second feeding device 102 through a sixth water inlet pipeline 306, and other structures can refer to other embodiments.

Example 5

As shown in fig. 1 to 8, the present invention discloses a detergent feeding device, and on the basis of embodiment 4, the water inlet valve 300 further includes a fourth water outlet, and the fourth water outlet is communicated with the fixed cavity 4 on the first feeding device 101 and/or the fixed cavity 4 on the second feeding device 102 through a twelfth water inlet pipeline 309.

The utility model discloses a detergent input device improves through the structure to detergent extraction and input, adopts the venturi structure of two negative pressures to realize the constant volume extraction of detergent respectively and input, simplifies and puts in the structure, reduces electrical components, improves the detergent extraction and puts in the reliability and the stability of work operation, reduction in production cost. Through improving the water inlet structure, a working condition that the constant volume cavity 4 extracts the liquid in the first cavity 14, the constant volume cavity 4 puts the washing liquid in the putting cavity 13 and the cleaning working condition of the constant volume cavity 4 on a single double-negative-pressure putting device 100 or a working condition that the constant volume cavity 4 extracts the liquid in the first cavity 14, the constant volume cavity 4 puts the washing liquid in the putting cavity 13 and the cleaning working condition of the constant volume cavity 4 on two double-negative-pressure putting devices 100 can be realized by adopting a multi-water-outlet water inlet valve such as a double-water-outlet water inlet valve, a three-water-outlet water inlet valve and a four-water-outlet water inlet valve according to requirements.

Example 6

The utility model also discloses a washing machine which comprises the detergent feeding device in any one of embodiments 1-5.

The washing machine may dispense the dispensed liquid in the first chamber 14 a plurality of times as required by the control program.

Preferably, the detergent feeding device can be an independent external feeding device or a feeding device integrated on the washing machine, and the feeding device, a main water inlet valve and a water inlet box on the washing machine form a highly integrated feeding device.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (10)

1. A detergent dispensing device, comprising:

a throwing cavity (13), wherein at least one first chamber (14) is arranged in the throwing cavity (13), and throwing liquid is stored in the first chamber (14);

the constant-volume cavity (4) is communicated with the first cavity (14) through a liquid suction pipe (6), and the constant-volume cavity (4) is arranged above the first cavity (14);

one end of the Venturi tube device is communicated with the fixed cavity (4), and the other end of the Venturi tube device is communicated with the water inlet valve (300);

the constant volume cavity flushing port (31) is communicated with the constant volume cavity (4), and the constant volume cavity flushing port (31) is communicated with the water inlet valve (300).

2. The detergent dispensing device according to claim 1, wherein the venturi tube device comprises a first venturi tube structure (1) and a second venturi tube structure (10) to form a double negative pressure dispensing device (100), a first water inlet pipe (21) of the first venturi tube structure (1) is communicated with a water inlet valve (300), a throat of the first venturi tube structure (1) is communicated with a fixed cavity (4) through a first negative pressure pipe (2), a second water inlet pipe (9) of the second venturi tube structure (10) is communicated with the water inlet valve (300), a throat of the second venturi tube structure (10) is communicated with the fixed cavity (4) through a second negative pressure pipe (8), a floating body (3) is arranged inside the first negative pressure pipe (2), a liquid suction one-way liquid discharge valve is arranged inside the second ball valve negative pressure pipe (8), and a liquid suction one-way valve (5) is arranged inside the liquid suction pipe (6), when the water inlet valve (300) feeds water into the first Venturi tube structure (1) through the first water inlet pipe orifice (21), the second Venturi tube structure (10) is in a closed state, and the fixed cavity (4) extracts the thrown liquid in the first cavity (14) through the liquid suction pipe (6); the water inlet valve (300) is used for supplying water to the second Venturi tube structure (10) through the second water inlet pipe opening (9), the first Venturi tube structure (1) is in a turn-off state, and the second Venturi tube structure (10) is used for extracting the put liquid in the fixed cavity (4) through the second negative pressure pipe (8).

3. The detergent dispensing device according to claim 2, further comprising a drawer base (29) and a drawer cover (28), wherein a dispensing cavity (13) is formed between the drawer base (29) and the drawer cover (28), a detergent cover (27) and a top cover (23) are sequentially disposed above the drawer cover (28), the fixed cavity (4) is formed between the top cover (23) and the detergent cover (27), and the fixed cavity flushing port (31) is disposed on the top cover (23).

4. The detergent dispensing device according to any one of claims 1 to 3, wherein the inlet valve (300) comprises at least three outlets, one of the outlets is connected to the first inlet pipe (21) through a first inlet pipe (301), the second outlet is connected to the constant volume chamber flushing port (31) through a second inlet pipe (302), and the third outlet is connected to the second inlet pipe through a third inlet pipe (303).

5. The detergent feeding device according to any one of claims 1 to 3, wherein the water inlet valve (300) comprises at least two water outlets, and the two water outlets of the water inlet valve (300) are respectively connected with the first water inlet pipe orifice (21), the second water inlet pipe orifice (9) and the constant volume cavity flushing port (31) through a reversing valve (200).

6. The detergent dispensing device according to claim 5, wherein the reversing valve (200) comprises a reversing valve housing (206) and a reversing valve cover (210), one end of the reversing valve housing (206) is connected with the three-way valve (202), the three-way valve (202) has three ports, one of which is connected with the first water inlet pipe port (201), the other is connected with the first water outlet port (203), the third is fixedly connected with the reversing valve housing (206) through a guide hole (212), the reversing valve housing (206) has a second water inlet pipe port (211) and a second water outlet port (205), the reversing valve cover (210) has a third water outlet port (209), the reversing valve core (207) passes through the guide hole (212), one end of the reversing valve core (207) is connected with the membrane valve plate (204), the membrane valve plate (204) is disposed at one end of the three-way valve (202), one end of the reversing valve core (207) is disposed with the reversing valve plug (208), the reversing valve plug (208) is arranged in the reversing valve casing (206), the membrane valve plate (204) can drive the reversing valve plug (207) and the reversing valve plug (208) to move upwards to block the water outlet III (209) when water enters the three-way valve (202), the membrane valve plate (204) can drive the reversing valve core (207) and the reversing valve plug (208) to move downwards to plug the second water outlet (205) when no water exists in the three-way valve (202), wherein the first water outlet (203), the second water outlet (205) and the third water outlet (209) are arranged in a structure of being lower and middle in the vertical direction, the first water outlet (203) is communicated with the second water inlet pipe orifice (9) through an eleventh water inlet pipeline (215), the second water outlet (205) is communicated with the constant volume cavity flushing port (31) through a tenth water inlet pipeline (214), and the third water outlet (209) is communicated with the first water inlet pipe orifice (21) through a ninth water inlet pipeline (213).

7. A washing machine, characterized in that the washing machine is provided with a detergent feeding device according to any one of claims 1 to 6.

8. A washing machine, comprising two detergent dispensing devices according to any one of claims 1 to 6, namely a first dispensing device (101) and a second dispensing device (102), wherein the first dispensing device (101) and the second dispensing device (102) are connected to a water inlet valve (300), the water inlet valve (300) comprises four water outlets, two of the water outlets are respectively communicated with a first water inlet pipe orifice (21) and a second water inlet pipe orifice (9) of the first dispensing device (101) through a first water inlet pipeline (301) and a third water inlet pipeline (303), and the other two water outlets are respectively communicated with the first water inlet pipe orifice (21) and the second water inlet pipe orifice (9) of the second dispensing device (102) through a fourth water inlet pipeline (304) and a fifth water inlet pipeline (305).

9. A washing machine, characterized by comprising two detergent dispensing devices according to any one of claims 1-6, namely a first dispensing device (101) and a second dispensing device (102), wherein the first dispensing device (101) and the second dispensing device (102) are connected to a water inlet valve (300), and the water inlet valve (300) comprises three water outlets, wherein the two water outlets are respectively connected to a first water inlet pipe (21) of the first dispensing device (101) and a first water inlet pipe (21) of the second dispensing device (102) through a first water inlet pipeline (301) and a fourth water inlet pipeline (304), and the third water outlet is simultaneously connected to a second water inlet pipe (9) of the first dispensing device (101) and a second water inlet pipe (9) of the second dispensing device (102) through a sixth water inlet pipeline (306).

10. Laundry washing machine according to claim 9, characterized in that said inlet valve (300) further comprises a fourth outlet, which is in communication with the fixed volume (4) of the first throwing device (101) and/or the fixed volume (4) of the second throwing device (102) through a twelfth inlet conduit (309).

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