CN107287839B - Water inlet device capable of throwing in detergent - Google Patents
Water inlet device capable of throwing in detergent Download PDFInfo
- Publication number
- CN107287839B CN107287839B CN201610190550.3A CN201610190550A CN107287839B CN 107287839 B CN107287839 B CN 107287839B CN 201610190550 A CN201610190550 A CN 201610190550A CN 107287839 B CN107287839 B CN 107287839B
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- channel
- inlet
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 182
- 239000003599 detergent Substances 0.000 title claims abstract description 154
- 239000007788 liquid Substances 0.000 claims abstract description 108
- 238000011010 flushing procedure Methods 0.000 claims abstract description 78
- 238000005406 washing Methods 0.000 claims abstract description 50
- 229920001971 elastomer Polymers 0.000 claims description 17
- 239000000806 elastomer Substances 0.000 claims description 17
- 230000009471 action Effects 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract description 2
- 239000003795 chemical substances by application Substances 0.000 description 8
- 238000003860 storage Methods 0.000 description 8
- 230000007704 transition Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000004090 dissolution Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/08—Liquid supply or discharge arrangements
- D06F39/088—Liquid supply arrangements
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F33/00—Control of operations performed in washing machines or washer-dryers
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/02—Devices for adding soap or other washing agents
- D06F39/022—Devices for adding soap or other washing agents in a liquid state
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/02—Devices for adding soap or other washing agents
- D06F39/028—Arrangements for selectively supplying water to detergent compartments
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/08—Liquid supply or discharge arrangements
- D06F39/083—Liquid discharge or recirculation arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Washing And Drying Of Tableware (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
Abstract
The water inlet device capable of throwing the detergent, which is accurate in metering and good in effect and does not corrode metal parts, is provided with a main channel (11), a venturi tube (7) is connected to the main channel, a main electromagnetic water inlet valve (1) is connected to the main channel, a flushing and liquid inlet channel (12) is connected to a water delivery channel in the inlet direction of the main electromagnetic water inlet valve in parallel, a flushing electromagnetic water inlet valve (2) and a liquid collecting cavity (5) in the outlet direction of the flushing electromagnetic water inlet valve are connected to the flushing and liquid inlet channel, a one-way valve A (3) and a detergent A box (4) connected to the inlet direction of the one-way valve A are connected between the flushing electromagnetic water inlet valve and the liquid collecting cavity, a liquid outlet channel (14) is connected between the outlet of the liquid collecting cavity and the negative pressure port of the venturi tube, a flow sensor (6) is connected to the liquid outlet of the main channel, and the outlet of the main channel is connected to a washing barrel. The invention is used as a water inlet and detergent feeding device of a washing machine.
Description
Technical Field
The invention relates to a liquid preparation throwing device, in particular to a device for automatically throwing a detergent for a washing machine.
Background
Along with the acceleration of the life rhythm and the continuous improvement of the energy-saving consciousness of consumers, users pay more attention to energy-saving and convenient household appliances when purchasing home and electric appliances. The washing machine is used as a household appliance with higher household use frequency, and energy conservation and convenience become important factors for customers to purchase. Washing machines with the function of automatically putting in detergent are also popular with users, and most of common washing machines on the market at present are manually added with detergent when washing clothes, the putting-in amount is difficult to grasp, and the washing effect is poor and the washing ratio is low when the using amount of the detergent is small; when the consumption of the detergent is too large, the detergent is wasted, the rinsing difficulty is increased, the water, electricity and time are wasted, and the cost of single washing is increased. Based on this, washing machine manufacturers have sequentially put forward washing machines that automatically throw in detergents.
At present, the design of an automatic detergent throwing device of a washing machine is mainly based on two ideas: firstly, by utilizing the layout of a water inlet pipe and a detergent delivery pipeline, when water inflow flows, a venturi effect is generated by a detergent adding pipeline, and the generated negative pressure is utilized to suck the detergent into the delivery pipe for delivery; and secondly, various liquid pumps are adopted as a device for pumping and delivering the detergent. According to the automatic detergent feeding device designed according to the thought, the fed detergent is difficult to accurately measure. The viscosity of the detergent is large at different temperatures, and when the environment temperature is low, the viscosity of the detergent is large, the driving motor of the automatic adding device is increased due to the increase of load, the rotating speed is reduced, and the adding amount is reduced; when the ambient temperature is higher, the viscosity of the detergent is small, the rotation speed of the driving motor of the automatic adding device is increased due to the reduction of the load, the adding amount is increased, and the accurate metering of the detergent adding amount is difficult.
Chinese CN101381939B discloses a washing machine with automatic detergent addition, comprising: the washing machine comprises a washing barrel, a control panel with cloth control keys, a laundry weight sensor, a temperature sensor, a water hardness sensor, a washing water pollution degree sensor, a detergent box and a computer board; the detergent box consists of an upper storage box and a lower dilution box, and the computer board controls the quantity of the detergent in the storage box entering the dilution box according to the detection result of each sensor. The technical scheme has complex structure and high cost.
Chinese CN102605589B discloses an automatic detergent feeding device, which comprises an automatic detergent feeding device and a detergent storage container, and further comprises a quantitative dissolution container, wherein a water inlet pipe is connected above the quantitative dissolution container, a water inlet valve is installed at the other end of the water inlet pipe, and the water inlet valve is connected with a washing machine controller; the detergent storage container is connected with the automatic detergent feeding device, and the automatic detergent feeding device is connected with the detergent storage container and the washing machine controller; an overflow port is arranged above the quantitative dissolution container, a probe is arranged on the overflow port, the probe is connected with a washing machine controller, and the overflow port is connected with a washing barrel through a conduit; the bottom of the quantitative dissolving container is provided with a water outlet valve which is connected with the washing barrel and the washing machine controller. According to the technical scheme, the dosage of the detergent can not be flexibly controlled according to the washing condition, the control precision is not accurate enough, the structure is complex, and the improvement is needed.
The Chinese CN103122569A discloses an automatic detergent throwing device for a washing machine, which comprises a microprocessor and a water inlet pipeline, wherein the water inlet pipeline is sequentially provided with a water inlet valve, a constant volume box and a detergent box, and the outlet end of the detergent box is communicated with a washing barrel of the washing machine; the water inlet valve is electrically connected with the microprocessor, a conveying device for guiding the detergent into the water inlet valve is arranged on an inlet pipeline of the fixed container, and the conveying device is connected with a storage tank for containing the detergent. When the technical scheme is used, the conveying device is started to guide the detergent into the constant volume box for quantification, then the conveying device is closed, the water inlet valve is opened, and the detergent is flushed into the washing box. Therefore, the operation process is complex, certain time lag exists, the conveying device is required to be started for weighing the detergent for multiple times, the detergent is flushed for multiple times, the process is complex, and the efficiency is low.
The washing agent throwing controller disclosed in Chinese CN203498661U is characterized in that a venturi negative pressure generator is connected to a water inlet pipe connected with a water source and a washing barrel, a flow path structure is that washing agent and flushing water enter a main water flow of the water inlet pipe through a negative pressure port of the negative pressure generator, the flushing water is shunted in the outlet direction of the negative pressure generator under the action of the negative pressure generator, enters a flushing water channel and a washing agent conveying channel, flows back and flows into the main water flow through the negative pressure port of the negative pressure generator, when the main water flow mixed with the washing agent is re-shunted into the flushing water channel, the washing agent is mixed in the flushing water, not only reduces flushing efficiency, but also has the harmful effect that the washing agent remains in the backflow channel after the washing agent is thrown, so that metal parts such as a valve are corroded and damaged, and after the controller stops water inlet, residual liquid exists in the pipeline for a long time, and the washing agent is odorized.
Disclosure of Invention
The invention aims to solve the problems of complex structure, high cost, inaccurate detergent feeding metering, complex operation process, low washing efficiency of fed detergent, corrosion of parts caused by mixed washing water with the detergent and the like of a water inlet device for feeding the detergent in the prior art.
In order to solve the problems, the invention adopts the technical scheme that the main channel is provided with a venturi tube connected with the main channel, and is characterized in that a main electromagnetic water inlet valve is connected with the main channel, a flushing and liquid inlet channel is connected with a water delivery channel in the inlet direction of the main electromagnetic water inlet valve in parallel, the flushing and liquid inlet channel is connected with a flushing electromagnetic water inlet valve and a liquid collecting cavity positioned in the outlet direction of the flushing electromagnetic water inlet valve, a one-way valve A and a detergent A box connected with the inlet direction of the one-way valve A are connected between the flushing electromagnetic water inlet valve and the liquid collecting cavity in a supporting way, a liquid outlet channel is connected between the outlet of the liquid collecting cavity and the negative pressure port of the venturi tube, a flow sensor is connected with the liquid outlet channel, and the outlet of the main channel is connected with a washing barrel.
In the first preferred aspect of the invention, a drainage channel is branched and connected on the flushing and liquid inlet channel, a one-way valve B is connected on the drainage channel, the outlet of the drainage channel is connected with the washing barrel, and the horizontal position of the outlet of the drainage channel is lower than that of the main channel.
And a second preferred mode is that a two-position three-way electromagnetic switching valve is connected between the branch connection part of the one-way valve A and the liquid collecting cavity on the flushing and liquid inlet channel, and a bypass inlet of the two-position three-way electromagnetic switching valve is connected with a detergent B box.
And a third preferred mode is that on the basis of the first preferred mode, a two-position three-way electromagnetic switching valve is connected between the branch connection part of the one-way valve A and the liquid collecting cavity on the flushing and liquid inlet channel, and a bypass inlet of the two-position three-way electromagnetic switching valve is connected with a detergent B box.
The fourth preferred is that on the basis of the third preferred, the one-way valve A, the one-way valve B and the two-position three-way electromagnetic switching valve are integrated on a switching valve, the main channel, the venturi tube, the flushing and liquid inlet channel, the drainage channel, the liquid outlet channel and the liquid collecting cavity are integrated on a box body, the box body is formed by combining a box cover, an upper box and a lower box from top to bottom, the detergent A box and the detergent B box are spliced into a detergent box, the detergent box is arranged in a cavity of the lower box, and the main electromagnetic water inlet valve, the flushing electromagnetic water inlet valve, the flow sensor and the switching valve are arranged on the box body.
The fourth preferred embodiment of the present invention is that the switching valve may have a flushing water inlet, a detergent B inlet, a detergent a inlet, a switching outlet a and a switching outlet B, the two-position three-way electromagnetic switching valve of the switching valve has a valve cavity a, a valve cavity B, an electromagnetic coil, a piston, a front valve seat and a rear valve seat located in the valve cavity B, a return spring is propped against the rear end of the piston, the front end of the piston is connected with an elastomer, the elastomer is located between the front valve seat and the rear valve seat, the front valve seat and the elastomer form a valve C, the rear valve seat and the elastomer form a valve D, the valve cavity B is communicated with the switching outlet B, the valve cavity a is communicated with the flushing water inlet, the one-way valve a and the one-way valve B of the switching valve are normally closed, the flow between the switching outlet a and the valve cavity a is blocked, the flow between the detergent a inlet and the valve cavity a is blocked, the elastomer is located at a forward position under the action of the return spring, the valve C is closed, the valve D is opened, and the valve cavity a is communicated with the valve cavity B.
And a water inlet, a drainage inlet, a liquid inlet, a detergent A outlet and a detergent B outlet can be formed in the box body in a fourth preferred mode, a water feeding port and a liquid feeding port are formed in the box body, the drainage inlet is communicated with the drainage channel through the water feeding port, the liquid inlet is communicated with the flushing and liquid feeding channel through the liquid feeding port, the drainage inlet is connected with a switching outlet A of the switching valve, the liquid inlet is connected with a switching outlet B of the switching valve, the water inlet is connected with a main electromagnetic water inlet valve outlet, and the outlet of the flushing electromagnetic water inlet valve is connected with a flushing water inlet of the switching valve.
And the fourth preference can also be that the lower part of the box cover and the upper part of the upper box are respectively provided with a convex rib, and the convex rib below the box cover corresponds to the convex rib above the upper box and is sealed to form the main channel, the liquid outlet channel, the flushing and liquid inlet channel, the water drainage channel and the liquid collecting cavity. .
Further, the detergent box may be a nested detergent box or a pull-out type detergent box, and the outlet of the detergent a box and the outlet of the detergent B box are respectively communicated with the detergent a outlet and the detergent B outlet of the box body, and respectively communicated with the detergent a inlet and the detergent B inlet of the switching valve.
The check valve A and the check valve B are in the prior art, and are provided with elastic sealing rings, springs and bases.
The invention is further described below with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic diagram of a construction of the present invention;
FIG. 2 is another structural schematic of the present invention;
FIG. 3 is a schematic illustration of yet another construction of the present invention;
FIG. 4 is a schematic diagram of a first embodiment of the present invention;
FIG. 5 is a view showing the outline of the first embodiment of the present invention;
FIG. 6 is a diagram of a cartridge including a cartridge and a flow sensor assembly according to a first embodiment of the present invention;
FIG. 7 is a diagram showing the external shape of a switching valve according to the first embodiment of the present invention;
FIG. 8 is a top view of the device of FIG. 5;
FIG. 9 is a left side elevational view of the apparatus of FIG. 5;
FIG. 10 is a B-B cross-sectional view of FIG. 8;
FIG. 11 is a cross-sectional view taken along line A-A of FIG. 9, and also is a schematic view of the device of FIG. 8 with the cover removed;
FIG. 12 is a cross-sectional view of C-C of FIG. 8;
FIG. 13 is a D-D sectional view of FIG. 8;
fig. 14 is an upper and lower separated view of a lid, an upper case, a detergent case, a lower case including a case body, having a depression angle, according to the first embodiment of the present invention;
fig. 15 is a top-bottom separated view of the case body including a cover, an upper case, a detergent case, and a lower case according to the first embodiment of the present invention;
FIG. 16 is an enlarged view of a portion of FIG. 10 showing the flow of flush water to FIG. 1;
FIG. 17 is an enlarged view of a portion of FIG. 12 showing the flow of flush water to FIG. 2;
FIG. 18 is an enlarged view of a portion of FIG. 13 showing the flow of flush water to FIG. 3;
FIG. 19 is an enlarged view of a portion of FIG. 12, showing FIG. 1 in which detergent A flows;
FIG. 20 is an enlarged view of a portion of FIG. 13, showing FIG. 2 in which detergent A flows;
FIG. 21 is an enlarged view of a portion of FIG. 13 showing a detergent B flow direction;
FIG. 22 is a schematic view of the device of the first embodiment mounted to a washing tub;
fig. 23 is an upper and lower exploded view with a top view of a lid, an upper case, a detergent case, a lower case, a transition joint comprising a case body in a second embodiment of the present invention;
fig. 24 is a top-down separated view of a lid, upper box, detergent box, lower box, and transition joint with a top view angle comprising a box body in a second embodiment of the present invention.
The marks and counterparts in the figure: a main electromagnetic water inlet valve 1, a flushing electromagnetic water inlet valve 2, a one-way valve A3, a detergent A box 4, a liquid collecting cavity 5, a flow sensor 6, a venturi tube 7, a venturi tube inlet 701, a venturi tube outlet 702, a negative pressure port 703, a one-way valve B8, a two-position three-way electromagnetic switching valve 9, a detergent B box 10, a main channel 11, a 1101 outlet 1101, a flushing and liquid inlet channel 12, a drainage channel 13 and a liquid outlet channel 14;
20 box bodies, a 2001 water inlet, a 2002 welding strip, a 2003 water outlet, a 2004 liquid inlet, a 2005 liquid inlet, a 2006 flow sensor inlet, a 2007 flow sensor outlet, a 2008 water inlet, a 2009 water outlet, a 2010 detergent B outlet, a 2011 detergent A outlet, a 20-A box cover, a 20-B upper box and a 20-C lower box;
21 switch valve, 2101 flush inlet, 2102 detergent B inlet, 2103 detergent a inlet, 2104 switch outlet a,2105 switch outlet B,2106 valve cavity a,2107 valve cavity B,2108 solenoid, 2109 piston, 2110 elastomer, 2111 front valve seat, 2112 rear valve seat, 2113 return spring,
22 drain, 2201 drain; 23 nested detergent box, 24 pull-out detergent box, 25 transition joint.
Detailed Description
Example 1
Referring to fig. 4, 5, 7, 10 and 11, a main channel 11 and a flushing and liquid inlet channel 12 are connected in parallel on the water inlet channel, a main electromagnetic water inlet valve 1 is connected on the main channel, a flushing electromagnetic water inlet valve 2 is connected on the flushing and liquid inlet channel, a venturi tube 7 is connected on the main channel in the outlet direction of the main electromagnetic water inlet valve, a liquid collecting cavity 5 is connected on the flushing and liquid inlet channel in the outlet direction of the flushing electromagnetic water inlet valve, a two-position three-way electromagnetic switching valve 9 is connected between the flushing electromagnetic water inlet valve and the liquid collecting cavity, a detergent B box 10 is connected on the inlet B direction of the two-position three-way electromagnetic switching valve, a one-way valve A3 is connected between the flushing electromagnetic water inlet valve and the inlet A of the two-position three-way electromagnetic switching valve, a liquid outlet channel 14 is connected between the outlet of the liquid collecting cavity and the venturi tube 703, a flow sensor 6 is connected on the liquid outlet channel 1101 is connected on the liquid outlet channel, a water outlet pipe is connected on the water outlet channel 1101 by a water outlet channel by way of a venturi tube which is connected on the horizontal position lower than the water outlet channel of the washing drum, a drain pipe is connected on the horizontal position of the water outlet channel by a water outlet channel is connected on the water outlet channel by a horizontal position of the venturi tube which is lower than the water outlet channel is connected on the horizontal position of the water outlet channel by a drain channel, a water outlet channel is connected on the water outlet channel by a horizontal position of the water outlet channel, and a water outlet channel is connected by a horizontal channel, and is connected with a water outlet channel, and is connected by a horizontal channel, and has a water outlet channel, and is connected.
The one-way valve A3, the one-way valve B8 and the two-position three-way electromagnetic switching valve 9 are integrated on a switching valve 21; referring to fig. 11, the main channel 11, the venturi tube 7, the flushing and liquid inlet channel 12, the water drain channel 13, the liquid outlet channel 14 and the liquid collecting cavity 5 are integrated in a box body 20, the box body is formed by combining a box cover 20-a, an upper box 20-B and a lower box 20-C from top to bottom, the detergent a box and the detergent B box are spliced into a sleeved detergent box 23, and the detergent box is arranged in the cavity of the lower box 20-C, as shown in fig. 14 and 15; the main electromagnetic water inlet valve 1, the flushing electromagnetic water inlet valve 2, the flow sensor 6 and the switching valve 21 are arranged on the box body.
The switching valve 21 is provided with a flushing water inlet 2101, a detergent B inlet 2102, a detergent A inlet 2103, a switching outlet A2104 and a switching outlet B2105, the two-position three-way electromagnetic switching valve of the switching valve is provided with a valve cavity A2106, a valve cavity B2107, an electromagnetic coil 2108, a piston 2109, a front valve seat 2111 and a rear valve seat 2112 which are positioned in the valve cavity B, a reset spring 2113 is propped against the rear end of the piston, an elastomer 2110 connected with the front end of the piston is positioned between the front valve seat and the rear valve seat, the front valve seat and the elastomer form a valve C, the rear valve seat and the elastomer form a valve D, the valve cavity A2106 is communicated with the flushing water inlet 2101, the valve cavity B2107 is communicated with the switching outlet B2105, the one-way valve A3 and the one-way valve B8 of the switching valve are closed in a normal state, the flow between the switching outlet A2104 and the valve cavity A2106 is blocked, the flow between the detergent A inlet 2103 and the valve cavity A2106 is blocked, the elastomer is positioned at a forward position under the action of the reset spring, the valve C is closed, the valve D is opened, and the valve D is opened, the valve B is communicated with the valve B2106 through the valve B7.
The box body is provided with a water inlet 2001, a water outlet 2003, a liquid inlet 2004, a detergent A outlet 2011 and a detergent B outlet 2010, see fig. 6; the upper case of the case body is provided with a water inlet 2008 and a water inlet 2005, a water drain inlet 2003 is communicated with the water drain channel 13 through the water inlet 2008, a water inlet 2004 is communicated with the flushing and liquid inlet channel 12 through the water inlet 2005, the water drain inlet 2003 is connected with a switching outlet A2104 of the switching valve, the water inlet 2004 is connected with a switching outlet B2105 of the switching valve, a water inlet 2001 is connected with an outlet of the main electromagnetic water inlet valve 1, and an outlet of the flushing electromagnetic water inlet valve 2 is connected with a flushing water inlet 2101 of the switching valve. The ribs 2002 are respectively arranged below the box cover 20-A and above the upper box 20-B, the ribs below the box cover and the ribs above the upper box correspond to each other and are sealed to form the main channel 11, the liquid outlet channel 14, the flushing and liquid inlet channel 12, the water outlet channel 13 and the outlet of the liquid collecting cavity 5 detergent A box and the outlet of the detergent B box are respectively communicated with the detergent A outlet 2011 and the detergent B outlet 2010 of the box body, and then are respectively communicated with the detergent A inlet 2103 and the detergent B inlet 2102 of the switching valve.
The operation of the device is described below.
1. Delivering rinse water
When the electromagnetic coil 2108 of the switching valve 21 is in a non-energized state, the flushing electromagnetic water inlet valve 2 is opened, water flows through the flushing water inlet 2101 of the switching valve 21, the water pressure in the valve cavity A2106 enables the one-way valve A3 to be in a closed state due to the fact that the flowing pressure of flushing water is larger than the atmospheric pressure, the one-way valve B8 is in an opened state, the electromagnetic coil 2108 of the switching valve is not energized, the valve D is opened under the action of the reset spring 2113, the valve C is closed, the valve cavity B2107 is communicated with the valve cavity A2106, water in the valve cavity A flows into the liquid outlet channel 14 through the valve cavity B, the switching valve outlet port 2105 of the switching valve, the upper liquid inlet 2005 of the upper box 20-B, the liquid collecting cavity 5 and the flow sensor 6, flows into the main channel 11 through the negative pressure port of the venturi tube, and then is input into the washing tub through the outlet 1101 and the connecting pipe of the outlet; on the other hand, the water flowing through the check valve B8 flows into the drain passage 13 through the switching valve outlet a2104, the drain inlet 2003 of the upper case, and the water inlet 2008, and is then introduced into the washing tub through the drain 2009 and the drain pipe 22 connected to the drain.
2. Detergent A is put in
When the solenoid 2108 of the switching valve 21 is in a non-energized state, the main electromagnetic water inlet valve 1 is opened, when main water flows through the venturi tube 7, the negative pressure is generated by the negative pressure port 703, the negative pressure passes through the liquid outlet channel 14, the flow sensor 6, the liquid storage cavity 5, the flushing and liquid inlet channel 12 and the liquid feeding port 2005, and is transmitted to the switching outlet B2105 of the switching valve, the piston 2109 enables the elastomer 2110 to act on the front valve seat 2111 under the action of the reset spring 2113 due to the non-energization of the solenoid 2108 of the switching valve, the valve C is in a closed state, the valve D is in an opened state, the valve cavity B2107 is communicated with the valve cavity A2106, the negative pressure is transmitted to the valve cavity A2106 through the negative pressure, the pressure corresponding to the atmospheric pressure in the detergent A box 4 is larger than the pressure in the valve cavity A, the detergent in the detergent A box flows into the valve cavity A through the one-way valve cavity A3, and the parameter design of the reset spring 3 ensures that the valve C is kept in a closed state due to the fact that the valve B is sufficiently kept in the condition due to the fact that the pressure caused by the difference between the atmospheric pressure of the detergent B box 10 and the negative pressure in the valve cavity B is not capable of flowing into the valve cavity B. The detergent A flowing into the valve cavity A is transferred into the flushing and liquid inlet channel 12 through negative pressure, and residual water in the liquid collecting cavity 5 flows into the flow sensor 6 under the pushing of the detergent in the flushing and liquid inlet channel and is converged with the main water flow through the liquid outlet channel 14 and the negative pressure port 703. When water in the liquid collecting cavity 5 flows through the flow sensor 6, the flow sensor converts the flowing water quantity into an electric pulse signal, and when the pulse output by the flow sensor reaches a set target value, the main electromagnetic water inlet valve 1 is closed, namely the suction and the throwing of the detergent A are stopped.
When the main electromagnetic water inlet valve is closed and the flushing electromagnetic water inlet valve is opened, and the flushing water is pushed by water pressure to enter the liquid collecting cavity 5 through the flushing and liquid inlet channel 12, the detergent sucked into the flushing and liquid inlet channel and the liquid collecting cavity in the metering process is pushed out of the liquid collecting cavity, enters the main channel 11 through the liquid outlet channel 14 and the negative pressure port 703 and is output through the water outlet 1101, and the detergent A in the flow path comprising the switching valve and the flow sensor can be flushed after a period of time.
3. Detergent B is put in
When the solenoid of the switching valve is electrified, the main electromagnetic water inlet valve 1 is opened, when main water flows through the venturi tube 7, the negative pressure is generated by the negative pressure port of the venturi tube, the negative pressure passes through the liquid outlet channel 14, the flow sensor 6, the liquid storage cavity 5, the flushing and liquid inlet channel 12 and the liquid inlet 2005, and is transmitted to the switching outlet B2015 of the switching valve, as the solenoid of the switching valve is electrified, the piston 2109 overcomes the acting force of the return spring 2113 to enable the elastomer 2110 to act on the rear valve seat 2112 under the action of electromagnetic attraction force, the valve C is opened, the valve D is closed, the channel of the valve cavity B and the valve cavity A is blocked, the negative pressure can only be transmitted to the valve cavity B, the pressure in the detergent B box 10 corresponding to the atmospheric pressure is larger than the pressure in the valve cavity B, the detergent in the detergent B box flows into the valve cavity B, the detergent B flows into the flushing and liquid inlet channel 12 through the transmission route of the negative pressure, and the residual water in the liquid collecting cavity flows through the flow sensor under the pushing of the flushing and liquid inlet channel under the pressure, and the residual water in the liquid collecting cavity flows into the liquid outlet channel 14 and is converged with the main water flow through the negative pressure port 703 of the venturi tube; when the water in the liquid collecting cavity flows through the flow sensor, the flow sensor converts the flowing water into an electric pulse signal, and when the pulse output by the flow sensor reaches a set target, the main electromagnetic water inlet valve is closed, namely the pumping and the throwing of the detergent B are stopped.
The washing of the detergent B in the flow path is similar to the washing of the detergent A described above.
The main channel is connected with the main electromagnetic water inlet valve and the venturi tube, and the water delivery channel in the inlet direction of the main electromagnetic water inlet valve is connected with the flushing and liquid inlet channel in parallel, so that negative pressure can be automatically generated when the main electromagnetic water inlet valve is started to deliver main water flow, and the detergent can be automatically put in; the water delivery channel in the inlet direction of the main electromagnetic water inlet valve is connected with the flushing and liquid inlet channels in parallel, so that the flushing water is not mixed with the detergent in the flushing process of detergent delivery, the flushing efficiency of the detergent is improved, more advantageously, no detergent residue exists in the flow channel after the main water flow delivery is stopped, and the problem of pipeline component corrosion caused by detergent residue in the prior art device is thoroughly solved; the horizontal position of the outlet of the main channel is lower than that of the negative pressure port of the venturi tube, so that residual water in the flushing and liquid inlet channel can be siphoned and discharged after the flushing action is finished, and the problems of water deterioration, odor and the like caused by long-time placement of the residual water in the traditional device are solved; the invention also has the characteristics of relatively simple structure, convenient operation, accurate detergent delivery and metering and the like.
Example two
In the water inlet device capable of delivering the detergent, the difference is that the detergent box is a pull-out type detergent box 24, referring to fig. 23 and 24, a dual-channel transition joint 25 is installed at the outlet 2011 of the detergent a and the outlet of the detergent B of the box body 20, the outlet of the detergent a box and the outlet of the detergent B box respectively correspond to one of two inlets of the transition joint, and the two outlets of the transition joint are respectively communicated with the inlet 2103 of the detergent a and the inlet 2102 of the detergent B of the switching valve. Other constructions are the same as those of the above example.
Claims (4)
1. A venturi tube (7) and a main electromagnetic water inlet valve (1) are connected to a main channel (11), a flushing and liquid inlet channel (12) is connected in parallel to a water delivery channel in the inlet direction of the main electromagnetic water inlet valve, a flushing electromagnetic water inlet valve (2) and a liquid collecting cavity (5) positioned in the outlet direction of the flushing electromagnetic water inlet valve are connected to the flushing and liquid inlet channel, a one-way valve A (3) and a detergent A box (4) connected to the inlet direction of the one-way valve A are branched and connected between the flushing electromagnetic water inlet valve and the liquid collecting cavity, a liquid outlet channel (14) is connected between the outlet of the liquid collecting cavity and the negative pressure port of the venturi tube, a flow sensor (6) is connected to the liquid outlet channel, and the outlet of the main channel is connected to a washing barrel;
the washing and liquid inlet channel is connected with a water drain channel (13), the water drain channel is connected with a one-way valve B (8), the outlet of the water drain channel is connected with the washing barrel, and the horizontal position of the outlet of the water drain channel is lower than that of the outlet of the main channel;
a two-position three-way electromagnetic switching valve (9) is connected between the branch connection part of the one-way valve A and the liquid collecting cavity, and a bypass inlet of the two-position three-way electromagnetic switching valve is connected with a detergent B box (10);
the one-way valve A (3), the one-way valve B (8) and the two-position three-way electromagnetic switching valve (9) are integrated on a switching valve (21), the main channel (11), the venturi tube (7), the flushing and liquid inlet channel (12), the water discharging channel (13), the liquid outlet channel (14) and the liquid collecting cavity (5) are integrated on a box body (20), the box body is formed by combining a box cover (20-A), an upper box (20-B) and a lower box (20-C) from top to bottom, the detergent A box and the detergent B are spliced into a detergent box, the detergent box is arranged in the cavity of the lower box, and the main electromagnetic water inlet valve (1), the flushing electromagnetic water inlet valve (2), the flow sensor (6) and the switching valve (21) are arranged on the box body;
the automatic water flushing device is characterized in that the switching valve (21) is provided with a flushing water inlet (2101), a detergent B inlet (2102), a detergent A inlet (2103), a switching outlet A (2104) and a switching outlet B (2105), a two-position three-way electromagnetic valve of the switching valve is provided with a valve cavity A (2106), a valve cavity B (2107), an electromagnetic coil (2108), a piston (2109), a front valve seat (2111) and a rear valve seat (2112) which are positioned in the valve cavity B, a reset spring (2113) is arranged at the top of the rear end of the piston, an elastomer (2110) is connected to the front end of the piston, the elastomer is positioned between the front valve seat and the rear valve seat, the front valve seat and the elastomer form a valve C, the rear valve seat and the elastomer form a valve D, the valve cavity A is communicated with the flushing water inlet, the valve cavity B is communicated with the switching outlet B, the one-way valve A (3) and the one-way valve B (8) of the switching valve are normally closed, liquid flow between the switching outlet A and the valve cavity A is blocked, liquid flow between the detergent A inlet and the valve cavity A is in a forward position under the action of the reset spring, the elastomer is positioned between the reset spring, the valve body and the valve body is positioned in the front position, and the valve seat C is closed, and the valve cavity B is opened, and the valve cavity B is communicated through the valve B.
2. The water inlet device according to claim 1, wherein a water inlet (2001), a water drain inlet (2003), a liquid inlet (2004), a detergent a outlet (2011) and a detergent B outlet (2010) are formed in the box body, a water inlet (2008) and a water inlet (2005) are formed in the box body, the water drain inlet penetrates through the water drain channel through the water inlet, the liquid inlet penetrates through the flushing and liquid inlet channel through the water inlet, the water drain inlet (2003) is connected with a switching outlet a (2104) of the switching valve, the liquid inlet (2004) is connected with a switching outlet B (2105) of the switching valve, the water inlet (2001) is connected with an outlet of the main electromagnetic water inlet valve (1), and an outlet of the flushing electromagnetic water inlet valve (2) is connected with a flushing water inlet (2101) of the switching valve.
3. The water inlet device according to claim 1, wherein ribs are respectively arranged below the box cover and above the upper box, and the ribs below the box cover and the ribs above the upper box correspond to each other and are sealed to form the main channel (11), the liquid outlet channel (14), the flushing and liquid inlet channel (12), the water discharging channel (13) and the liquid collecting cavity (5).
4. A water inlet device according to claim 1, 2 or 3, characterized in that the detergent box is a nested detergent box (23) or a pull-out detergent box (24), the outlet of the detergent a box and the outlet of the detergent B box being in communication with the detergent a outlet and the detergent B outlet of the box body, respectively, and with the detergent a inlet and the detergent B inlet of the switching valve, respectively.
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| CN201610190550.3A CN107287839B (en) | 2016-03-30 | 2016-03-30 | Water inlet device capable of throwing in detergent |
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| CN109518425B (en) * | 2018-12-06 | 2023-10-20 | 杭州神林电子有限公司 | Detergent delivery system |
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| EP4008826B1 (en) * | 2019-08-02 | 2024-06-19 | Chongqing Haier Washing Machine Co., Ltd. | Additive dispensing apparatus and clothes washing machine |
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| CN112080902A (en) * | 2020-08-17 | 2020-12-15 | 珠海格力电器股份有限公司 | Automatic detergent feeding device, washing machine and control method |
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