CN215628822U

CN215628822U - Detergent feeding device and washing machine

Info

Publication number: CN215628822U
Application number: CN202120748159.7U
Authority: CN
Inventors: 黄海鹏
Original assignee: Luoyang Fancheng Internet Technology Co ltd
Current assignee: Luoyang Fancheng Internet Technology Co ltd
Priority date: 2020-04-13
Filing date: 2021-04-13
Publication date: 2022-01-25
Anticipated expiration: 2031-04-13

Abstract

The utility model provides a detergent feeding device and a washing machine, wherein the detergent feeding device comprises: the detergent box body comprises at least one first cavity, and the first cavity is used for accommodating and storing a liquid throwing solvent; the water homogenizing box support is provided with a water homogenizing mixing cavity, and the lowest part of the water homogenizing mixing cavity is provided with a discharge port; put in the device, including water installations and venturi structure, water installations can intake to the washing barrel through main inlet channel, water installations can absorb the first stock solution attitude of holding the intracavity through venturi structure and put in the solvent and put in set up relief valve device on the detergent box body, relief valve device sets up the junction at single water intaking valve and main inlet channel. The detergent feeding device and the washing machine have the advantages of ingenious structure, accurate control and reliable use, and prevent liquid in the negative pressure pipe from generating siphon effect and flowing into the detergent box.

Description

Detergent feeding device and washing machine

Technical Field

The utility model relates to the technical field of household appliances, in particular to a detergent feeding 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 development of technology and the increasing perfection of functions of washing machines, the demand of users on the technology of automatically putting detergent into the washing machine is higher and higher. In the related art, the detergent putting device generally adopts a piston pump, a centrifugal pump, a peristaltic pump, an electromagnetic valve and the like, and the detergent is directly put into the water tank, but the detergent put in the mode is poor in water flow mixing effect, so that the washing performance is affected, and the clothes are 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.

And the washing machine with the automatic putting function can intelligently detect parameters such as water quality, clothes dirt degree and the like, and calculate the accurate detergent putting amount. Some automatic putting-in function washing machines judge the weight of clothes by fuzzy weighing, determine the water consumption corresponding to the amount of the clothes, and then control the working time of a putting-in pump according to the fixed proportion of the concentration of the detergent to put in the detergent. A flow sensor is installed on the automatic feeding device of part of washing machines, and the feeding amount is accumulated through the flow sensor so as to improve the accuracy of the feeding amount.

The device for putting in the washing and protecting agent generally comprises a washing and protecting agent storage box, a water inlet box and a putting device, wherein the washing and protecting agent stored in the washing and protecting agent storage box is put into the water inlet box through the putting device and flows into a washing barrel to wash and protect user clothes. The device is relatively complex, high in cost, complex in assembly and high in requirements on the precision of manufacturing processes and parts. The control of the current various automatic detergent feeding devices on the detergent feeding amount precision is only solved by improving the precision of the feeding devices, however, the feeding devices are only one of the factors influencing the feeding amount, and the influence of the environmental factors of equipment use on the detergent feeding amount is also great. Such as the ambient temperature, the viscosity of various washing and protecting agents and the influence of water inflow on the concentration of washing and protecting articles in washing liquid, and the like, can influence the final washing and protecting effect of washing equipment. Especially, the detergent or the detergent is generally sticky liquid, and the use condition of the equipment is influenced in the automatic feeding process, so that the control of the feeding precision is influenced.

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 the problems of poor feeding effect and low precision of the existing detergent feeding device.

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

a detergent delivery device comprising: the detergent box body comprises at least one first cavity, and the first cavity is used for accommodating and storing a liquid-state throwing solvent;

the water homogenizing box support is provided with a water homogenizing mixing cavity, and the lowest part of the water homogenizing mixing cavity is provided with a discharge port;

the feeding device comprises a water inlet device and a Venturi tube structure, the water inlet device is communicated with the Venturi tube structure and the main water inlet pipeline, and when water enters the water inlet device through the Venturi tube structure, the liquid feeding solvent in the first containing cavity can be absorbed and fed into the water homogenizing mixing cavity; the water inlet device can feed water into the washing barrel through a main water inlet pipeline;

the detergent box body is provided with a pressure relief valve device, and the pressure relief valve device is arranged at the joint of the single water inlet valve and the main water inlet pipeline.

Preferably, the venturi structure, including venturi entry, venturi export, venturi negative pressure sunction inlet, the venturi entry is connected the mouth and is held the chamber intercommunication with first through liquid detergent, venturi negative pressure sunction inlet sets up the venturi entry with between the venturi export.

Preferably, the negative pressure channel of the venturi structure is in an inverted 'U' -shaped design.

Preferably, a spherical structure is arranged at the bent part at the upper end of the negative pressure channel, and a blocking ball is arranged in the spherical structure and can block or circulate the negative pressure channel according to the flowing state of water flow in the negative pressure channel.

Preferably, the blocking ball is a rubber ball.

Preferably, the detergent box body further comprises a second cavity, the second cavity is a manual detergent cavity, the second cavity is used for containing and storing detergent or washing powder placed manually at a time, the water inlet device is communicated with the second cavity, and the second cavity is communicated with the water mixing cavity.

Preferably, the water inlet device comprises a multi-head water inlet valve, and the multi-head water inlet valve comprises a main water inlet valve and at least one throwing control valve; the main water inlet valve is communicated with the second cavity through a main water inlet pipeline; and the throwing control valve is communicated with the inlet of the Venturi tube structure.

Preferably, the water inlet device comprises a single water inlet valve and a change-over valve, the single water inlet valve and the change-over valve are arranged on the detergent box body, the change-over valve comprises at least three pipe orifices which are a change-over valve inlet, a change-over valve normal opening and a change-over valve normal closing opening respectively, the single water inlet valve is communicated with the change-over valve inlet through a change-over valve water inlet flow passage, the change-over valve normal opening is communicated with the second cavity through a change-over valve normal water outlet flow passage, and the change-over valve normal closing opening is communicated with the venturi tube structure through a venturi tube flow passage.

Preferably, a check valve is disposed between the liquid detergent inlet and the venturi tube negative pressure suction inlet.

The utility model also aims to disclose a washing machine, which comprises any one detergent feeding device.

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

(1) the detergent feeding device disclosed by the utility model is ingenious in structure and easy to control, and by changing the water inlet device of the detergent feeding device, a single water inlet valve for controlling water inlet and a switching valve for controlling the feeding of the solvent are separately arranged, so that the product design is optimized, and the application range of the detergent feeding device is widened.

(2) According to the detergent putting device disclosed by the utility model, liquid in the negative pressure pipe is prevented from generating a siphon effect through the inverted U-shaped negative pressure pipe channel, and water flows into the detergent box; simultaneously, when washing machine was out of work, the rubber ball played the effect of valve plug, and the protection pipeline avoids the drying.

(3) According to the detergent putting device disclosed by the utility model, the venturi tube structure arranged on the detergent box body is used for realizing the absorption and putting of the liquid putting solvent during working, the liquid putting solvent is fully mixed before putting through the arranged water homogenizing box support, the viscosity of the liquid putting solvent is diluted, the problem that excessive scraping and remaining of the liquid putting solvent exist in the putting channel is avoided, the accuracy control of putting of the liquid putting solvent is ensured, and the washing effect of clothes is improved.

(4) The detergent feeding device disclosed by the utility model is ingenious in structure, accurate in control and reliable in use, feeding of one or more detergents is realized through improvement of the water inlet box, the main water inlet valve and the feeding device, the feeding structure is simplified, matching of parts is reduced, and reliability and stability of parts are improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

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

FIG. 2 is a top view of a detergent dispenser according to embodiment 1 of the present invention;

FIG. 3 is a schematic cross-sectional view of A-A in FIG. 2;

fig. 4 is a schematic top view of a water inlet structure of the detergent dispensing device according to embodiment 1 of the present invention;

fig. 5 is a schematic middle sectional view of a detergent dispensing device according to embodiment 1 of the present invention;

FIG. 6 is a schematic sectional view of a negative pressure part of the detergent dispensing device according to embodiment 1 of the present invention;

fig. 7 is an exploded view of the detergent dispensing device according to embodiment 1 of the present invention;

fig. 8 is an exploded view of the detergent dispensing device according to embodiment 1 of the present invention from a second viewing angle;

fig. 9 is an exploded view of a detergent dispensing device according to embodiment 1 of the present invention from a third viewing angle;

fig. 10 is a schematic structural diagram of a detergent box in the detergent dispensing device according to embodiment 1 of the present invention;

fig. 11 is a schematic top view of a detergent box in the detergent dispensing device according to embodiment 1 of the present invention;

fig. 12 is a schematic cross-sectional view of a detergent dispensing device according to embodiment 2 of the present invention with a check valve disposed in the middle;

fig. 13 is a partial sectional structural view of the negative pressure of the detergent dispensing device in embodiment 2 of the present invention;

fig. 14 is a schematic structural view of a pressure relief device in the detergent dispensing device according to embodiment 3 of the present invention;

fig. 15 is a top view of the working principle of the detergent dispensing device in embodiment 4 of the present invention;

FIG. 16 is a cross-sectional view B-B of FIG. 15;

FIG. 17 is a cross-sectional view taken at C-C of FIG. 15;

fig. 18 is a rear view of the detergent dispensing device according to embodiment 4 of the present invention;

fig. 19 is a perspective view of the detergent dispensing device according to embodiment 4 of the present invention;

fig. 20 is a schematic view showing the construction of a change-over valve according to embodiment 4 of the present invention;

fig. 21 is a top view of the working principle of the detergent dispensing device in embodiment 5 of the present invention;

FIG. 22 is a cross-sectional view of the structure of FIG. 21;

fig. 23 is a perspective view of the detergent dispensing device in embodiment 5 of the present invention;

fig. 24 is a perspective view of the detergent dispensing device according to embodiment 6 of the present invention;

FIG. 25 is a schematic cross-sectional view of a middle portion of a detergent dispensing device according to embodiment 6 of the present invention;

FIG. 26 is a schematic longitudinal sectional view of a negative pressure port of the detergent dispensing device according to embodiment 6 of the present invention;

FIG. 27 is a schematic structural view of a middle longitudinal section of a detergent dispensing device according to embodiment 6 of the present invention;

FIG. 28 is a schematic diagram showing a structure of a vertical cross section of a pressure release valve of the detergent dispensing device in embodiment 6 of the present invention;

fig. 29 is a schematic cross-sectional view of a venturi structure in a detergent dispensing device according to embodiment 6 of the present invention;

fig. 30 is a schematic diagram illustrating the operation of the automatic detergent dispensing device of the washing machine according to embodiment 7 of the present invention;

fig. 31 is an overall plan view of an automatic detergent dispensing device according to embodiment 7 of the present invention;

FIG. 32 is a schematic cross-sectional view of K-K of FIG. 31;

FIG. 33 is a schematic cross-sectional view of M-M of FIG. 31;

FIG. 34 is an overall top view of a drawer assembly according to an embodiment of the present invention;

FIG. 35 is a schematic cross-sectional view of K-K of FIG. 34;

FIG. 36 is a schematic cross-sectional view of M-M of FIG. 34;

FIG. 37 is a schematic structural view of a drawer in a half-out state according to an embodiment of the present invention;

fig. 38 is a schematic top view of the detergent dispensing device according to embodiment 8 of the present invention;

FIG. 39 is a schematic view of the section M-M in FIG. 38 showing the state during detergent application;

FIG. 40 is a schematic view of the section M-M in FIG. 38 in a state of flushing;

description of reference numerals:

1. a multi-head water inlet valve, 2, a main water inlet valve, 20, a single water inlet valve, 3, a throwing control valve, 30, a change-over valve, 31, a change-over valve inlet, 32, a change-over valve normally open, 33, a change-over valve normally closed, 34, a change-over valve water inlet flow passage, 35, a change-over valve normally water outlet flow passage, 36, a venturi tube flow passage, 4, a main water inlet pipeline, 4a, a pressure relief valve device, 40, a pressure relief valve cover, 41, a pressure relief port, 42, a rubber valve plug, 43, a first adjusting spring, 5, a throwing pipeline, 50, a flow meter, 6, a venturi tube structure, 61, a venturi tube inlet, 62, a venturi tube outlet, 63, a venturi tube negative pressure suction inlet, 64, a liquid detergent inlet, 65, a valve plug, 66, a second adjusting spring, 67, a blocking cover, 68, a small cover, 69, a negative pressure valve port, 610, a negative pressure passage, 611, a spherical structure, 612, a blocking ball, 7 and a water homogenizing box holder, 71. temperature sensor, 72, water pressure sensor, 73, water pressure hose, 74, water pressure air chamber, 75, liquid level detector, 8, detergent box body, 9, first cavity, 10, box top cover, 11, first input opening, 12, second input opening, 13, second cavity, 14, sealing rubber ring, 15, water mixing cavity, 16, discharge opening, 19, water mixing hole, 100, drawer component, 101, water inlet box cover, 102, water inlet box component, 103, water inlet channel, 104, thimble structure, 105, water mixing chamber, 106, water mixing plate, 107, box cover block, 108, handle block, 109, handle, 1010, first box body, 1011, limit block, 1012, drawer, 1013, flip cover, second box cover, 1015, second box body, 1016, plug, 1017, flushing pipe opening, 1018, buoyancy ball, 1019, flushing pipe, 1020, flushing pipe discharge opening, 1021, main water inlet opening, 9, first cavity, 10, water inlet cover, 11, water inlet box cover, 103, water inlet channel, 104, thimble structure, 105, water mixing chamber, 106, water mixing plate, handle block, and buoyancy ball, The water inlet and outlet device comprises a main water inlet and outlet, 1023, a flushing connecting pipe, 1024, an auxiliary water inlet and outlet, 1025, a second flow meter, 1026, an auxiliary water outlet pipe, 1027 and an auxiliary water outlet pipe outlet.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present invention.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present invention. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

Example 1

As shown in fig. 1 to 11, the present invention discloses a detergent dispensing device, comprising:

the detergent box body 8 comprises at least one first cavity 9, and the first cavity 9 is used for accommodating and storing a liquid throwing solvent;

the water homogenizing box support 7 is provided with a water homogenizing mixing cavity 15, and the lowest part of the water homogenizing mixing cavity 15 is provided with an outlet 16;

the throwing device is used for sucking the liquid throwing solvent in the first containing cavity 9 and throwing the liquid throwing solvent into the water homogenizing mixing cavity 15;

when the feeding device works, the liquid detergent feeding solvent in the first cavity 9 is sucked into the feeding device through the liquid detergent inlet 64 on the first cavity 9 and can be discharged to the water homogenizing mixing cavity 15 along with the work of the feeding device, and the liquid feeding solvent and water are mixed in the water homogenizing mixing cavity 15 and then are discharged through the discharge port 16.

Preferably, the feeding device comprises a water inlet device and a venturi tube structure 6, and the water inlet device is communicated with the venturi tube structure 6; the venturi structure 6 comprises a venturi inlet 61, a venturi outlet 62 and a venturi negative pressure suction inlet 63, wherein the venturi inlet 61 is communicated with the first cavity 9 through a liquid detergent inlet 64, and the venturi negative pressure suction inlet 63 is arranged between the venturi inlet 61 and the venturi outlet 62;

when water installations passes through venturi entry 61 is intake to venturi structure 6, and the rivers of intaking flow out through venturi export 62, at this moment, produces the negative pressure in venturi negative pressure sunction inlet 63 department, inserts mouth 64 and inhales venturi structure 6 with the liquid solvent of puting in first appearance chamber 9 through liquid detergent to can discharge to even water mixing chamber 15 through venturi export 62 along with venturi structure 6's rivers, liquid putting in solvent and water discharge through discharge port 16 after even water mixing chamber 15 mixes.

The detergent putting device disclosed by the utility model has the advantages that the venturi tube structure arranged on the detergent box body is used for realizing the absorption and putting of the liquid putting solvent during working, the liquid putting solvent is fully mixed before putting through the arranged water homogenizing box support 7, the viscosity of the liquid putting solvent is diluted, the problem that excessive scraping and residue are left in a putting channel is avoided, the accuracy control of putting of the liquid putting solvent is ensured, and the washing effect of clothes is improved.

As another example of the present invention, the dispensing device may also be a dispensing pump for sucking the liquid dispensing solvent in the first cavity 9 and dispensing it into the homogenizing and mixing cavity 15 for mixing.

Preferably, the detergent box body 8 further comprises a second cavity 13, the second cavity 13 is a manual detergent cavity, the second cavity 13 is used for containing and storing detergent or washing powder placed manually at a time, the water inlet device is communicated with the second cavity 13, and the second cavity 13 is communicated with the water homogenizing mixing cavity 15.

This setting is held 13 the absorption of accomplishing the input liquid singleness and is put in through setting up the second, and is rational in infrastructure, and control is accurate, has simplified the automatic control structure of putting in of detergent greatly, reduction in production cost.

Preferably, as a preferred example of the present invention, the water inlet device comprises a multi-head water inlet valve 1, the multi-head water inlet valve 1 comprises a main water inlet valve 2 and at least one throw control valve 3; the main water inlet valve 2 is communicated with the second cavity 13 through a main water inlet pipeline 4; the dosing control valve 3 communicates with the venturi inlet 61 of the venturi structure 6. As an example of the present invention, the multi-head water inlet valve 1 is in a one-inlet multi-outlet form, one of which is a main water inlet valve 2, the other is a feeding control valve 3, the main water inlet valve 2 is connected with the second cavity 13 through a main water inlet pipe 4, the feeding control valve 3 is connected with a venturi tube structure 6 through a feeding pipe 5, the venturi tube structure 6 is communicated with the first cavity 9 and a water homogenizing mixing cavity 15, the water inlet end of the venturi tube structure 6 is a venturi tube inlet 61, the venturi tube outlet 62 is communicated with the second cavity 13 and/or the water homogenizing mixing cavity 15, when the feeding control valve 3 is opened, a water inlet device feeds water into the venturi tube structure 6 through the feeding control valve 3 and the feeding pipe 5, a negative pressure venturi tube suction inlet 63 generates a negative pressure, the negative pressure venturi tube inlet 63 sucks the liquid feeding solvent in the first cavity 9 into the venturi tube structure 6 through a liquid detergent inlet 64, and then to the second chamber 13 and/or homogenizing chamber 15.

This setting discloses a water installations of detergent input device, and is rational in infrastructure, can satisfy the single article input and the liquid many times input of putting in the solvent of detergent input device simultaneously.

Preferably, as a preferred example of the present invention, said first volume 9 is able to flow towards said second volume 13 and further towards said homogenizing and mixing chamber 15 through the venturi structure 6 under the action of the water inlet means.

By the arrangement, the liquid throwing solvent is firstly mixed in the second cavity 13 and then flows into the water homogenizing mixing cavity 15 for further mixing, the mixing and diluting effects of the liquid throwing solvent and water flow are improved, and the accuracy control of the throwing of the liquid throwing solvent and the washing effect of clothes are further improved.

Preferably, as a preferred example of the present invention, the detergent feeding device further includes a box top cover 10, the box top cover 10 is disposed at the upper end of the detergent box body 8, the water homogenizing box holder 7 is disposed at the lower end of the detergent box body 8, a first feeding port 11 and a second feeding port 12 are respectively disposed on the box top cover 10, the first feeding port 11 is communicated with the first cavity 9, the second feeding port 12 is communicated with the second cavity 13, and the venturi tube structure 6 is disposed between the first cavity 9 and the second cavity 13.

The arrangement discloses a concrete structure of a detergent putting device, the structure is ingenious, a box top cover 10 and a water homogenizing box support 7 are respectively arranged at the upper end and the lower end of a detergent box body 8, a main water inlet pipeline 4, a Venturi tube structure 6 and the detergent box body 8 are integrated, the use of spare and accessory parts is reduced, the size of the detergent putting device is reduced, the space occupied by the detergent putting device is reduced, and the applicability of the detergent putting device is improved.

Preferably, as a preferred example of the present invention, the first cavity 9 includes one or at least two independent cavities for respectively placing different liquid dosing solvents or other auxiliary washing materials. Each cavity is communicated with the second cavity 13 and/or the water homogenizing mixing cavity 15, and each cavity is provided with a feeding port for placing a liquid feeding solvent or other auxiliary washing materials into the independent cavity of the first cavity 9.

Preferably, the liquid dosing solvent is a liquid detergent or a liquid care agent, and may be one or more of various detergents, softeners, disinfectants and other care products, for example.

Preferably, the water inlet means is connected to the detergent box 8 by a sealing rubber ring 14. This arrangement improves the sealing property of the connection of the water inlet device and the detergent box body 8.

Preferably, as a preferred example of the present invention, the number of the throwing control valves 3 arranged on the multi-head water inlet valve 1 corresponds to the number of the independent chambers in the first cavity 9. The arrangement further ensures the reliability of the independent feeding of the multiple liquid feeding solvents in the first cavity 9.

When the detergent feeding device is manually fed, solid washing powder or liquid feeding solvent is directly placed in the second cavity 13 according to the quantity, and water enters the second cavity 13 through the main water inlet pipeline 4 when entering the main water inlet valve 2, then flows into the water homogenizing mixing cavity 15, and is discharged into the washing barrel through the discharge port 16.

When the liquid throwing control valve 3 is automatically thrown, the liquid throwing solvent can be placed in the first containing cavity 9 according to the dosage of multiple use amounts, and the throwing control valve is switched on or switched off according to the on-off signal given by the electric control board. When the mixing device is opened, water enters the feeding control valve 3, flows in from the venturi tube inlet 61 through the feeding pipeline 5, is discharged to the water homogenizing mixing cavity 15 from the venturi tube outlet 62, at this time, according to the working principle of the venturi tube, the venturi tube negative pressure suction inlet 63 sucks liquid feeding solvent from the first containing cavity 9 through the liquid detergent inlet 64, mixes the solvent into water, enters the second containing cavity 13 and/or the water homogenizing mixing cavity 15, and is discharged into the washing barrel through the discharge port 16 on the water homogenizing mixing cavity 15, and if the main water inlet valve 2 is opened at the same time, the water can be fully mixed.

As an example of the utility model, the control of the detergent feeding amount is controlled by an electric control board, after various information such as water inflow, water inflow speed, temperature, detergent viscosity and the like are collected, a feeding amount signal is given through empirical data, the on-off time of a feeding control valve is mainly controlled, and the feeding amount of the detergent is adjusted and controlled through temperature and water pressure compensation.

Preferably, the control chip collects the information and calculates the putting amount of the putting device by the following method:

C＝X₁+X₂+X₃+…+X_n

wherein X is₁＝a*T₁+b*L₁+c*S₁

X₂＝a*T₂+b*L₂+c*S₂

………

X_n＝a*T_n+b*L_n+c*S_n

Wherein: s is delta W d, C is the total amount of various washing and protecting agents, and the total amount of the various washing and protecting agents is the sum of the various washing and protecting agents; x₁、X₂、…X_nThe dosage of various washing agents is shown, and T is the compensation multiplying power of various washing agents at normal temperature relative to the ambient temperature sensed by the PCB temperature sensing chip; l is the viscosity information of various washing and protecting agents collected by the PCB and then the compensation rate relative to the normal temperature is calculated; s, collecting water inlet speed information for the PCB to control the putting speed of the detergent; the delta W is a water level change value of two time periods in the set water level collected by the PCB, and the water inlet speed is calculated according to the water level change value; wherein a, b and c … are constants of dosage of various washing and protecting agents. And the input quantity constant is set with input quantity values under different temperature conditions according to the equipment use environment and the use guidance suggestion of the washing and caring articles.

Embodiment 2, as shown in fig. 1 to 13, the utility model discloses another detergent feeding device, wherein a one-way valve is arranged between the liquid detergent inlet 64 and the venturi tube negative pressure suction inlet 63, and the one-way valve enables the liquid feeding solvent in the first cavity 9 to flow only to the venturi tube negative pressure suction inlet 63 through the liquid detergent inlet 64, so as to prevent the water flow in the venturi tube structure 6 from flowing to the first cavity 9. The other structure is the same as that of embodiment 1.

This arrangement prevents water from flowing backward into the first chamber 9 when the water pressure of the water supplied from the water supply device is too high.

Preferably, the check valve includes blanking cover 67, valve plug 65 and second regulating spring 66, blanking cover 67 sets up liquid detergent inserts mouth 64 department, blanking cover 67 has conical surface or step face, second regulating spring 66 one end with valve plug 65 is connected, and the other end is fixed venturi negative pressure sunction inlet 63 department.

When the venturi tube structure 6 starts to work, negative pressure is generated at the venturi tube negative pressure suction inlet 63, the second adjusting spring 66 displaces towards the direction close to the venturi tube negative pressure suction inlet 63, and then the valve plug 65 is driven to be separated from the blocking cover 67, so that the liquid detergent inlet 64 is in an open state, and the liquid put-in solvent in the first cavity 9 flows to the venturi tube negative pressure suction inlet 63 through the liquid detergent inlet 64 under the action of negative pressure; after the work of venturi tube structure 6 is finished, second adjusting spring 66 resumes to the normal position, continues to paste valve plug 65 and presses on blanking cover 67, and then makes liquid detergent inserts mouth 64 and is in the enclosed state, avoids remaining liquid or rivers to flow to first appearance intracavity 9.

This set up simple structure, easily processing production and assembly, simultaneously can be reliable prevent rivers to flow backward in first appearance chamber 9.

Embodiment 3, as shown in fig. 1 to 14, the utility model discloses another detergent feeding device, wherein a pressure relief valve device 4a is arranged at the front end of the venturi tube structure 6, the pressure relief valve device 4a is used for conducting drainage and pressure relief when the water pressure at the inlet 61 of the venturi tube is too high, and other structures are the same as other embodiments.

When the water pressure through the venturi tube exceeds the set water pressure, the relief valve is opened, and water flows into the second containing cavity 13 from the relief valve, so that the water pressure in the venturi tube is reduced, and the venturi tube can be effectively used.

The pressure relief valve device 4a comprises a pressure relief valve cover 40, a pressure relief opening 41, a rubber valve plug 42 and a first adjusting spring 43, wherein the rubber valve plug 42 and the first adjusting spring 43 are used for sealing or opening an inlet of the pressure relief valve device 4a at the front end of the Venturi tube, and the pressure relief opening 41 is used for flowing water flowing into the pressure relief valve cover 40 to flow out.

Specifically, set up in the pressure release valve gap 40 and hold the chamber, hold the chamber with venturi entry 61 intercommunication, rubber valve plug 42 sets up the entrance that holds the chamber carries out the water seal, rubber valve plug 42's opposite side through first adjusting spring 43 with pressure release valve gap 40 is connected, pressure release mouth 41 is in on pressure release valve gap 40's the lateral wall.

When water pressure is too big, when exceeding predetermined limit, water pressure overcomes first regulating spring 43's compressive force, makes rubber valve plug 42 break away from the sphere of sealing water, and the water part of venturi front end flows into the intracavity that holds of pressure release valve gap 40, and then flows out from pressure release 41 to the water pressure that makes flow through venturi reduces to within the predetermined limit.

Preferably, the pressure relief port 41 is communicated with the main water inlet pipeline 4. Or, the pressure relief port 41 is directly communicated with the second cavity 13 and/or the water homogenizing and mixing cavity 15.

This arrangement allows the pressure relief valve means 4a to be located between the main water inlet conduit 4 and the forward end of the venturi structure 6, communicating the venturi inlet 61 with the main water inlet conduit 4; or between the front end of the venturi structure 6 and the second cavity 13 and/or the water homogenizing mixing chamber 15, so as to realize the communication between the venturi inlet 61 and the second cavity 13 and/or the water homogenizing mixing chamber 15, so that the water discharged through the pressure relief valve device 4a finally flows to the water homogenizing mixing chamber 15 and flows to the washing tub through the discharge port 16.

Preferably, as a preferred example of the present invention, the venturi tube is set to accommodate a water pressure in the range of 0.01 to 1 mpa; the protection water pressure of the pressure release valve device 4a is set to be 0.5-0.55 MPa, so that the control precision of the detergent feeding amount is guaranteed.

Preferably, a flow meter 50 is provided on a pipe between the liquid detergent inlet 64 and the venturi tube negative pressure suction port 63. The flow meter 50 is used for metering the amount of the detergent flowing out from the liquid detergent inlet 64, and only the amount of the absorbed liquid put-in solvent is metered without measurement and calculation, so that the method is simple, convenient, accurate and reliable, and is more favorable for calculating the control of the put-in amount of the detergent.

Embodiment 4, as shown in fig. 15 to 20, the utility model discloses another detergent feeding device, the water inlet device includes a single water inlet valve 20 and a switching valve 30, the single water inlet valve 20 and the switching valve 30 are disposed on the detergent box body 8, the switching valve 30 includes at least three pipe orifices, which are a switching valve inlet 31, a switching valve normal opening 32 and a switching valve normal closing opening 33, respectively, the single water inlet valve 20 is communicated with the switching valve inlet 31 through a switching valve water inlet flow passage 34, the switching valve normal opening 32 is communicated with the second cavity 13 through a switching valve normal water outlet flow passage 35, and the switching valve normal closing opening 33 is communicated with the venturi tube structure 6 through a venturi tube flow passage 36. Other configurations are as in the other embodiments.

The arrangement discloses another water inlet device, the single water inlet valve 20 is only connected with a water tap, when the single water inlet valve 20 is opened to work, water flow entering from the single water inlet valve 20 flows to the change-over valve 30 through the change-over valve water inlet flow channel 34, and under the change-over action of the change-over valve 30, one path of water flow directly flows to the second accommodating cavity 13, and the other path of water flow only flows to the venturi tube structure 6 when the change-over valve normally-closed port 33 is opened, so that the liquid throwing solvent in the first accommodating cavity 9 is sucked out.

The scheme has the advantages of ingenious structure and easy control, and the single water inlet valve 20 for controlling water inlet and the change-over valve 30 for controlling the state to put in the solvent are separately arranged by changing the water inlet device of the detergent putting device, so that the product design is optimized, and the application range of the detergent putting device is widened.

Preferably, as a preferred example of the present invention, the venturi inlet 61 is communicated with the switching valve normally-closed port 33 of the switching valve 30, the venturi outlet 62 is communicated with the second compartment 13, and the venturi negative pressure suction port 63 is connected with the liquid detergent inlet 64 through a pipe, and the liquid detergent inlet 64 is disposed at the lower end of the first compartment 9.

This arrangement ensures the reliability of the detergent dispensing device of the present invention in dispensing the liquid solvent in the first chamber 9 by the extractor under the action of the single inlet valve 20 and the change-over valve 30.

Preferably, as a preferred example of the present invention, a check valve is provided on a pipe between the liquid detergent inlet 64 and the venturi tube negative pressure suction port 63. The structure and function of the check valve are the same as those of the embodiment 2, and are not described in detail herein.

Preferably, as a preferred example of the present invention, a relief valve device 4a is provided between the venturi inlet 61 and the venturi negative pressure suction port 63. The structure and function of the pressure relief valve device are the same as those in embodiment 3, and are not described in detail here.

Preferably, as a preferred example of the present invention, a plurality of water homogenizing holes 19 are provided at the bottom of the second cavity 13, and the second cavity 13 is communicated with the water homogenizing and mixing cavity 15 through the water homogenizing holes 19.

According to the detergent feeding device, when the detergent feeding is manually controlled, solid washing powder or liquid feeding solvent is directly placed in the second cavity 13 according to the quantity, only the single water inlet valve 20 is started, and water flows into the second cavity 13 through the change-over valve inlet 31, the change-over valve normal opening 32 and the change-over valve normal water outlet flow passage 35, flows into the water homogenizing mixing cavity 15 through the water homogenizing hole 19, and further flows into a washing barrel through the discharge port 16 on the water homogenizing mixing cavity 15.

When the automatic control detergent is put in, the liquid put-in solvent can be placed in the first chamber 9 according to the dosage of multiple use amount, the single water inlet valve 20 is started, the change-over valve 30 is opened simultaneously, the change-over valve normally-closed port 33 is opened, water flows to the venturi tube structure 6 through the venturi tube flow passage 36, negative pressure is generated at the venturi tube negative pressure suction inlet 63 of the venturi tube structure 6, the liquid put-in solvent in the first chamber 9 is mixed into water in the venturi tube structure 6 through the liquid detergent access port 64 and the venturi tube negative pressure suction inlet 63, and then flows into the second chamber 13, flows into the uniform water mixing chamber 15 through the uniform water hole 19, and then flows into the washing barrel through the discharge port 16 on the uniform water mixing chamber 15.

Preferably, as a preferred example of the present invention, a small cover 68 is disposed at the bottom of the first cavity 9, the small cover 68 is disposed at the position of the liquid detergent inlet 64, and the upper surface of the small cover 68 is lower than the upper surface of the bottom plate of the first cavity 9.

This arrangement forms a step-like recess at the liquid detergent inlet 64 of the first chamber 9, further ensuring the reliability of the absorption and feeding of the liquid feeding solvent.

Embodiment 5, as shown in fig. 1 to 23, the utility model discloses another detergent feeding device, wherein a sensor device is arranged on the detergent box body 8, and the sensor device is used for detecting the ambient temperature information of the detergent box body 8 and the water pressure information of the water inlet pipeline on the detergent box body 8 and feeding back the information to the computer board.

The computer board and/or the detergent putting device and/or the controller set the detergent putting amount according to the water pressure box environment temperature detected by the sensor device and the washing load client, and the power-on time of the change-over valve 30 or the putting control valve 3 is determined by calculating and compensating according to the water pressure information of the water inlet pipeline on the detergent box body 8 to control the water flow time passing through the Venturi tube structure 6, so that the detergent putting amount is effectively controlled.

Preferably, the sensor device comprises a temperature sensor 71, and the temperature sensor 71 is used for detecting the current ambient temperature.

After the temperature sensor detects the ambient temperature, the viscosity of the detergent can be reflected, and the difference of the viscosities of detergents of different brands can be ignored.

Preferably, a hydraulic pressure air chamber 74 and a hydraulic pressure sensor 72 are arranged on the detergent box body 8, the hydraulic pressure sensor 72 extends into the hydraulic pressure air chamber 74 through a hydraulic pressure hose 73, and the hydraulic pressure sensor 72 senses and transmits the hydraulic pressure of the water inlet pipeline through the hydraulic pressure hose 73 and the hydraulic pressure air chamber 74.

Preferably, a liquid level detector 75 is disposed on the detergent box 8, and the liquid level detector 75 is used for detecting the remaining amount of the liquid detergent in the first cavity 9. As an example of the present invention, the detergent in the first cavity 9 is used for one time or multiple times, and when the laundry detergent is less than a set value, the detergent dispensing device alarms to remind a customer to add a liquid solvent.

Embodiment 6 discloses another detergent feeding device, as shown in FIGS. 24 to 29,

the detergent box body 8 is provided with a pressure relief valve device 4a, and the pressure relief valve device 4a is arranged at the joint of the single water inlet valve 20 and the main water inlet pipeline 4.

As an example of the present invention, the pressure relief opening 41 of the pressure relief valve device 4a is arranged in front of the water inlet, so that on one hand, the pressure relief area can be increased, the pressure balance in the main water inlet pipe 4 after pressure relief is ensured, the excessive water pressure is prevented, the negative pressure is in a certain range as much as possible, the detergent box body 8 and the box top cover 10 are prevented from being flushed away by the water pressure at the welding position, and meanwhile, the stable flow of detergent sucked by the negative pressure pipe in the venturi tube structure 6 is ensured.

Further, the negative pressure channel 610 of the venturi structure 6 is in an inverted "U" shape. As an example of the present invention, by increasing the diameter of the negative pressure channel 610, the original size of the mouth part is maintained, so that the cross-sectional area of the flow channel of the negative pressure channel 610 is larger than the cross-sectional area of the "U" shaped connection part of the negative pressure channel 610, and the negative pressure valve port 69 formed on the upper surface of the detergent box body 8 is a position indication of the structure of the negative pressure channel 610.

Preferably, a spherical structure 611 is arranged at the bent position of the upper end of the negative pressure channel 610, and a blocking ball 612 is arranged in the spherical structure 611, wherein the blocking ball 612 can block or circulate the negative pressure channel 610 according to the flowing state of the water flow in the negative pressure channel 610.

Preferably, the blocking ball 612 is a rubber ball.

The diameter of the negative pressure channel 610 is increased through the inverted U-shaped negative pressure pipe channel, the original size of the mouth part is still kept, a spherical structure 611 is arranged at the bending part of the upper end of the negative pressure channel 610, and a blocking ball 612 is arranged in the spherical structure 611 in an empty mode. When enough water pressure passes through the water flow channel, the negative pressure pipe of the Venturi tube structure 6 generates negative pressure, detergent is sucked from the first cavity 9 of the detergent box, the blocking ball 612 floats upwards, and the negative pressure channel 610 is smooth.

When the water flow in the water flow channel stops, the negative pressure of the negative pressure pipe is lost, the detergent in the detergent pipe flows back, the rubber ball sinks and is attached to the spherical surface, and the detergent is cut off.

This setting is first to prevent that negative pressure pipe liquid from producing the siphon effect, will flow in the detergent box. Secondly, when the washing machine does not work, the rubber ball plays the role of a valve plug, protects the pipeline and avoids drying.

In addition, the precondition of the control method of the detergent feeding device of the utility model is that: the target of the dosage (ml) can be achieved at different water pressures.

The principle is as follows: the predetermined input amount is realized according to the water pressure. The water pressure determines the flow, and the machine weighing and judging the amount of the water is put.

And (3) water pressure judgment: 1. the water level sensor frequency value corresponding to the empty bucket (a certain model is constant), the water inlet time T1 judges the next water level sensor frequency value Hz1, the water inlet time T2 judges the next water level sensor frequency value Hz2, and the water inlet time T3 judges the next water level sensor frequency value Hz3.

The arbitrary frequency value difference Hzn- (Hzn-1) corresponds to the water amount in the Tn- (Tn-1) time zone, and the flow rate Vn per unit time is calculated. The data can be continuously corrected so that the data are more approximate to the actual water pressure condition.

The input amount is as follows: vn Ln, Ln is corresponding unit time water pressure corresponding throwing unit.

Embodiment 7, as shown in fig. 30 to 37, the present invention discloses another detergent dispensing device, which includes a water inlet box assembly 102 and a drawer assembly 100, wherein the water inlet box assembly 102 is provided with a multi-head water inlet valve 1, the multi-head water inlet valve 1 is communicated with a water homogenizing chamber 105 through a venturi tube structure 6 and a water inlet passage 103, a water inlet box cover 101 is arranged above the water homogenizing chamber 105, the drawer assembly 100 is arranged at the lower part of the water inlet box assembly 102, the drawer assembly 100 is provided with a second box body 1015, at least one first cavity 9 is arranged in the second box body 1015, the first cavity 9 is used for accommodating and storing a liquid dispensing solvent, the first cavity 9 is communicated with the water homogenizing chamber 105 through the venturi tube structure 6, when the multi-head water inlet valve 1 feeds water into the water homogenizing chamber 105 through the venturi tube structure 6, the liquid dispensing solvent in the first cavity 9 can be dispensed into the water homogenizing chamber 105, the liquid-state charged solvent and water are mixed in the water homogenizing chamber 105 and then discharged, and other structures can be combined with the structures in embodiments 1 to 6.

As an example of the present invention, the drawer assembly 100 further includes a first box 1010, a second cavity 13 is disposed in the first box 1010, the second cavity 13 is a manual detergent cavity, the second cavity 13 is used for storing a single manual detergent or washing powder, the water homogenizing chamber 105 is communicated with the second cavity 13, and a drain 16 is disposed at the lowest position of the first box 1010.

As an example of the present invention, a water uniforming plate 106 is provided below the water uniforming chamber 105, and a plurality of water uniforming holes are provided in the water uniforming plate 106.

As an example of the present invention, when the multi-head water inlet valve 1 feeds water into the water homogenizing chamber 105 through the water inlet channel 103, the water in the water homogenizing chamber flows to the second cavity 13 of the first box 1010 through the water homogenizing hole on the water homogenizing plate 106, and further flows to the washing tub through the outlet 16 arranged at the lowest position of the first box 1010; when the liquid solvent of puting in when needs are put in, bull water intaking valve 1 can be through venturi structure 6 to even hydroecium 105 intaking, and venturi structure 6 can absorb the liquid solvent of puting in first appearance chamber 9 and put in even hydroecium 105 and mix, and even water board 106's effect through even water hole flow direction second appearance chamber 13, and then put in to the washtub.

As an example of the present invention, a structure acting as a check valve is provided at a connection between the negative pressure pipe of the venturi structure 6 and the first chamber 9. The function of the multi-head water inlet valve 1 is to prevent water from flowing backwards into the first cavity 9 when the water pressure is too high.

Specifically, the acting structure of the check valve includes a thimble structure 104, a valve plug 65 and a second adjusting spring 66, the second adjusting spring 66 blocks the valve plug 65 at the inlet of the negative pressure channel of the venturi tube structure 6, and when the negative pressure channel generates negative pressure, a thimble of the thimble structure 104 can be inserted into the valve plug 8 and is communicated with the first cavity 9; when the negative pressure passage does not generate negative pressure, the second adjusting spring 66 drives the valve plug 65 to return to the original position, and the thimble of the thimble structure 104 is not communicated with the first cavity 9.

When the venturi tube structure 6 generates negative pressure in the negative pressure channel under the control of the multi-head water inlet valve 1, the liquid-state thrown solvent in the second box body 1015 enters the negative pressure channel through the ejector pin and further enters the water homogenizing chamber 105.

Preferably, a second cover 1014 is provided at the upper end of the second case 1015, and a lid 1013 is provided on the second cover 1014. This arrangement enables the first chamber 9 containing the liquid dosing solvent to be opened or closed by the flap 1013 and the detergent to be dosed into the first chamber 9 when the flap 1013 is opened.

Preferably, the drawer assembly 100 includes a drawer grip 1012, the first container 1010 is fixedly connected to the drawer grip 1012, and the first container 1010 can slide or be fixed relative to the second container 1015.

Specifically, a handle 109 is arranged on the second box body 1015, a handle stopper 108 is arranged on the handle 109, a box cover stopper 107 is arranged on the lower surface of the water inlet box cover 101, and the box cover stopper 107 can limit the handle stopper 108. When the drawer needs to be pulled out, the box cover stop 107 is separated from the handle stop 108 by pressing the handle 109, and the drawer grip 1012 can drive the first box body 1010 to slide out to the side far away from the multi-head water inlet valve 1.

A limiting block 1011 is arranged on the edge of the periphery of the upper end of the second accommodating cavity 13, and the limiting block 1011 limits the sliding-out displacement of the first box body 1010.

Due to the arrangement, when the second cavity 13 is put in one time, the drawer assembly 100 can be conveniently opened and closed, and washing powder can be conveniently placed in the drawer assembly.

The detergent feeding device is suitable for a drum washing machine, especially a washing-free drum washing machine, when the drawer hand grip 1012 drives the first box 1010 to be pulled out towards the front side, the first cavity 9 is exposed, and the detergent or washing powder placed in the first cavity 9 manually at a time can be conveniently placed; the liquid releasing solvent in the first cavity 9 of the second box cover 1014 can be used for a plurality of times, and when the liquid releasing solvent in the first cavity 9 needs to be added, the liquid releasing solvent can be added by opening the flip cover 1013 arranged on the second box cover 1014.

Embodiment 8, as shown in fig. 38 to 40, the present invention discloses another detergent dispensing device, which comprises a first box 1010 and a second box 1015, a second cavity 13 is arranged in the first box body 1010, the second cavity 13 is a manual detergent cavity, the second cavity 13 is intended to contain a single manually placed dose of detergent or washing powder, at least one first cavity 9 is arranged in the second box 1015, the first cavity 9 is used for containing and storing liquid throwing solvent, the first cavity 9 is communicated with an auxiliary water inlet 1024 through a venturi tube structure 6, the other end of the venturi tube structure 6 is communicated with the second cavity 13 through an auxiliary water outlet tube 1026, the second volume 13 is in communication with the main inlet 1021 via a main inlet 1022, the auxiliary water inlet 1024 and the main water inlet 1021 are connected with a water inlet device, and other structures are the same as other embodiments.

As an example of the present invention, the water inlet device is a multi-head water inlet valve 1, and two outlets of the multi-head water inlet valve 1 are respectively communicated with a main water inlet 1021 and an auxiliary water inlet 1024; alternatively, the water inlet means includes a single inlet valve 20, and the single inlet valve 20 is communicated with the main inlet 1021 and the auxiliary inlet 1024 through a switching valve.

When the second cavity 13 contains a single product of put washing powder, the main water inlet 1022 is directly connected to the first box 1010, and the washing powder in the second cavity 13 is dissolved and then flows into the washing barrel of the washing machine through the outlet 16;

when the liquid solvent in the first cavity 9 is added, the secondary inlet 1024 is connected to the venturi structure 6, the negative pressure channel 610 of the venturi structure 6 is connected to the second box 1015, and the outlet of the negative pressure channel 610 is discharged from the secondary outlet 1027 to the second cavity 13 through the secondary outlet tube 1026, or directly discharged to the washing tub.

As an example of the present invention, when the water inlet device enters water through the main water inlet 1021, the washing water introduced from the main water inlet 1021 directly flows to the second cavity 13 through the main water inlet 1022 to enter the washing tub; when the water inlet device is used for feeding water through the auxiliary water inlet 1024, the washing water introduced from the auxiliary water inlet 1024 flows to the second containing cavity 13 through the Venturi tube structure 6 and the auxiliary water outlet pipe 1026, at the moment, the negative pressure pipe of the Venturi tube structure 6 can generate negative pressure, the liquid throwing solvent in the first containing cavity 9 is sucked into the auxiliary water outlet pipe 1026, the sucked liquid throwing solvent and the washing water in the auxiliary water outlet pipe 1026 are together thrown into the second containing cavity 13, and finally the washing water flows to the washing barrel, so that the automatic throwing of the washing agent is realized.

As an example of the present invention, the negative pressure channel 610 of the venturi structure 6 is of an inverted U-shaped design.

As an example of the present invention, a check valve structure that is checked is provided in the negative pressure passage 610. For example, a spherical structure 611 is provided at a bent portion of the upper end of the negative pressure channel 610, and a blocking ball 612 is provided in the spherical structure 611, wherein the blocking ball 612 can block or circulate the negative pressure channel 610 according to the flow state of water in the negative pressure channel 610.

As an example of the utility model, a washing opening is provided at the lowest point of the second container 1015, which can be closed off by a plug 1016.

As an example of the present invention, a flushing pipe 1019 is connected to the front end of the venturi structure 6, a flushing pipe port 1017 at one end of the flushing pipe 1019 is communicated with a main water inlet 1021 through a flushing connection pipe 1023, the other end of the flushing pipe 1019 flows to the second receiving chamber 13 through a flushing pipe discharge port 1020, and the flushing pipe 1019 and the venturi structure 6 are changed in on-off state through a switching device.

As an example of the present invention, the switching device comprises a buoyancy ball 1018, the buoyancy ball 1018 is arranged inside the flushing pipe 1019, the density of the buoyancy ball 1018 is less than that of water, and the buoyancy ball 1018 can block the communication state of the flushing pipe 1019 and the venturi structure 6 under the action of the gravity; the buoyancy ball 1018 can block the on-off of the flushing pipe 1019 under the buoyancy effect of the introduced washing water.

Specifically, the overall height of the flushing pipe 1019 is higher than the height of the flushing pipe port 1017, a stepped groove is formed at the joint of the flushing pipe 1019 and the venturi structure 6, the height of the flushing pipe 1019 at the rear part of the stepped groove is higher than the height of the flushing pipe 1019 at the front part of the stepped groove, and the buoyancy ball 1018 is arranged in the stepped groove.

As shown in fig. 39, which is a structural schematic of the detergent dispensing device according to the present invention in the automatic detergent dispensing state, the auxiliary water inlet pipe is filled with water, the venturi tube structure 6 is filled with water, the negative pressure channel 610 generates negative pressure to open the blocking ball 612, so as to suck the liquid dispensing solvent in the first cavity 9, and at the same time, the buoyancy ball 1018 is at the lower position under the action of its own weight to close the communication between the flushing pipe 1019 and the venturi tube structure 6.

As shown in fig. 40, which is a structural schematic of the detergent dispensing device according to the present invention when the detergent is completely dispensed and washed, the auxiliary water inlet pipe stops water inlet, the blocking ball 612 of the negative pressure channel 610 is at the lower position, the negative pressure channel 610 is in the closed state, at this time, the main water inlet 1021 is opened, a portion of water flows from the washing connection pipe 1023 to the washing pipe 1019, and is discharged from the washing pipe discharge port 1020 to the second cavity 13, at this time, the buoyancy ball 1018 in the washing pipe 1019 floats up, so that a portion of water flows downward into the venturi tube structure 6, thereby washing the detergent in the pipeline, avoiding drying and blocking the pipeline.

Preferably, a negative pressure tube flow meter 50 is added to the negative pressure passage 610. The device can measure the amount of the added detergent, and when the requirement of program setting is met, the water inlet of the auxiliary water inlet pipe is stopped.

Alternatively, a second flow meter 1025 is added to the venturi structure 6. This arrangement converts the amount of detergent drawn in by measuring the amount of water entering the venturi tube structure 6, or alternatively converts the water pressure and then the amount of detergent drawn in.

Embodiment 9, the present invention discloses another detergent dispensing device, including:

the detergent box body 8 comprises a second box body 1015, at least one first cavity 9 is arranged in the second box body 1015, and the first cavity 9 is used for accommodating and storing a liquid throwing solvent;

the water homogenizing box support 7 is provided with a water homogenizing mixing cavity 15;

the liquid-state throwing solvent in the first cavity 9 flows to the water-homogenizing mixing cavity 15 under the action of the water inlet device and the throwing pipeline;

the putting method comprises the following steps: the putting amount of the detergent is controlled by the electric control board, after the information of water inflow, water inflow speed, temperature and detergent viscosity is collected, a putting amount signal is given through empirical data, then the putting amount of the detergent is adjusted and controlled through temperature and water pressure compensation by controlling the on-off time of the putting control valve, and other structures and putting methods refer to other embodiments.

Preferably, put in the pipeline and include venturi structure 6, venturi structure 6 includes venturi entry 61, venturi export 62, venturi negative pressure suction inlet 63, venturi entry 61 connects mouth 64 and first appearance chamber 9 intercommunication through liquid detergent, venturi negative pressure suction inlet 63 sets up venturi entry 61 with between the venturi export 62.

Preferably, the detergent box body 8 further comprises a second cavity 13, the second cavity 13 is a manual detergent cavity, the second cavity 13 is used for containing and storing detergent or washing powder placed manually at a time, and the second cavity 13 is communicated with the water homogenizing mixing cavity 15.

Preferably, the water inlet device includes a single inlet valve 20 and a switching valve 30, the single inlet valve 20 and the switching valve 30 are disposed on the detergent box body 8, the switching valve 30 includes at least three nozzles, which are a switching valve inlet 31, a switching valve normal opening 32 and a switching valve normal closing opening 33, the single inlet valve 20 is communicated with the switching valve inlet 31 through a switching valve inlet flow passage 34, the switching valve normal opening 32 is capable of flowing the washing water to the washing tub through a switching valve normal outlet flow passage 35, and the switching valve normal closing opening 33 is communicated with the venturi tube structure 6 through a venturi tube flow passage 36.

Preferably, the water inlet device comprises a multi-head water inlet valve 1, and the multi-head water inlet valve 1 comprises a main water inlet valve 2 and at least one throwing control valve 3; the main water inlet valve 2 is communicated with the second cavity 13 through a main water inlet pipeline 4; the dosing control valve 3 communicates with the venturi inlet 61 of the venturi structure 6.

Preferably, a check valve is arranged between the liquid detergent inlet 64 and the venturi tube negative pressure suction inlet 63, and the check valve is used for discharging the liquid detergent feeding solvent in the first cavity 9 only through the liquid detergent inlet 64.

Preferably, a pressure relief valve device 4a is arranged on the detergent box body 8, and the pressure relief valve device 4a is arranged at the connection position of the single water inlet valve 20 and the main water inlet pipeline 4.

Preferably, a sensor device is arranged on the detergent box body 8, the sensor device comprises a temperature sensor 71, a water pressure sensor 72 and a liquid level detector 75, the temperature sensor 71 is used for detecting the current environment temperature, the water pressure sensor 72 is used for sensing and transmitting the water pressure of a water inlet pipeline in the water inlet device, and the liquid level detector 75 is used for detecting the residual amount of the liquid detergent in the first accommodating cavity 9.

Preferably, a flushing pipe 1019 is connected to the front end of the venturi structure 6, a flushing pipe port 1017 at one end of the flushing pipe 1019 is communicated with a main water inlet 1021 through a flushing connecting pipe 1023, the other end of the flushing pipe 1019 flows to the second accommodating cavity 13 through a flushing pipe discharge port 1020, and the flushing pipe 1019 and the venturi structure 6 can change the on-off state thereof through a switching device.

Embodiment 10, the utility model also discloses a washing machine comprising the detergent feeding device as described in any one of embodiments 1 to 9.

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 water inlet valve and a water inlet box on the washing machine form a highly integrated feeding device.

Preferably, the detergent feeding device shares a main water inlet electromagnetic valve of the washing machine.

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

1. A detergent dispensing device, comprising: the detergent box body (8), the detergent box body (8) comprises at least one first cavity (9), and the first cavity (9) is used for containing and storing a liquid throwing solvent;

the water homogenizing box support (7), a water homogenizing mixing cavity (15) is arranged on the water homogenizing box support (7), and a discharge port (16) is arranged at the lowest position of the water homogenizing mixing cavity (15);

the feeding device comprises a water inlet device and a Venturi tube structure (6), the water inlet device is communicated with the Venturi tube structure (6) and the main water inlet pipeline (4), and when water is fed into the water inlet device through the Venturi tube structure (6), a liquid feeding solvent in the first containing cavity (9) can be sucked and fed into the water homogenizing mixing cavity (15); the water inlet device can feed water into the washing barrel through a main water inlet pipeline (4);

the detergent box body (8) is provided with a pressure relief valve device (4a), and the pressure relief valve device (4a) is arranged at the joint of the single water inlet valve (20) and the main water inlet pipeline (4).

2. Device is put in to detergent according to claim 1, characterized by, venturi structure (6), including venturi entry (61), venturi export (62), venturi negative pressure suction inlet (63), venturi entry (61) through liquid detergent access (64) with first appearance chamber (9) communicate, venturi negative pressure suction inlet (63) set up between venturi entry (61) and venturi export (62).

3. Detergent dispensing device according to claim 2, characterized in that the negative pressure channel (610) of the venturi tube structure (6) is of inverted "U" shaped design.

4. A detergent dispensing device as claimed in claim 3, wherein a spherical structure (611) is provided at the bend of the upper end of the negative pressure channel (610), and a blocking ball (612) is provided in the spherical structure (611), wherein the blocking ball (612) is capable of blocking or circulating the negative pressure channel (610) according to the water flow state in the negative pressure channel (610).

5. Detergent dispensing device according to claim 4, wherein the blocking ball (612) is a rubber ball.

6. The detergent dispensing device according to any one of claims 1 to 5, wherein the detergent box (8) further comprises a second cavity (13), the second cavity (13) is a manual detergent cavity, the second cavity (13) is used for containing and storing detergent or washing powder placed manually at a single time, the water inlet device is communicated with the second cavity (13), and the second cavity (13) is communicated with the water homogenizing mixing cavity (15).

7. Detergent dispensing device according to claim 1, wherein said water inlet means comprise a multi-head water inlet valve (1), said multi-head water inlet valve (1) comprising a main water inlet valve (2) and at least one dispensing control valve (3); the main water inlet valve (2) is communicated with the second containing cavity (13) through a main water inlet pipeline (4); and the throwing control valve (3) is communicated with a Venturi tube inlet (61) of the Venturi tube structure (6).

8. The detergent dispensing device according to claim 1, wherein the water inlet device comprises a single water inlet valve (20) and a switching valve (30), the single water inlet valve (20) and the switching valve (30) are disposed on the detergent box body (8), the switching valve (30) comprises at least three pipe orifices, namely a switching valve inlet (31), a switching valve normal opening (32) and a switching valve normal closing opening (33), the single water inlet valve (20) is communicated with the switching valve inlet (31) through a switching valve water inlet flow passage (34), the switching valve normal opening (32) is communicated with the second accommodating cavity (13) through a switching valve normal water outlet flow passage (35), and the switching valve normal closing opening (33) is communicated with the venturi tube structure (6) through a venturi tube flow passage (36).

9. Detergent dispensing device according to claim 2, characterized in that a one-way valve is provided between said liquid detergent inlet (64) and said venturi tube negative pressure suction inlet (63).

10. A washing machine comprising the detergent dispensing device according to any one of claims 1 to 9.