CN111455628A - Automatic additive feeding device and washing machine - Google Patents
Automatic additive feeding device and washing machine Download PDFInfo
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- CN111455628A CN111455628A CN201910048382.8A CN201910048382A CN111455628A CN 111455628 A CN111455628 A CN 111455628A CN 201910048382 A CN201910048382 A CN 201910048382A CN 111455628 A CN111455628 A CN 111455628A
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- pressure regulating
- water
- pressure
- water supply
- valve plate
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- 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
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- 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
Abstract
The invention relates to the technical field of washing machines, in particular to an automatic additive feeding device, which comprises: a water supply flow passage; a reservoir containing an additive; the pumping structure can pump the additive in the liquid storage box to the water supply flow channel and convey the additive to the water outlet along with water flow; the anti-suck-back device is arranged at the pressure regulating port of the water supply flow passage; when water enters the water supply channel, the anti-suck-back device is controlled to close the pressure regulating port under the action of the pressure of the flowing water; when negative pressure is generated in the water supply flow passage, the anti-suck-back device is controlled to open the pressure regulating port and regulate the pressure in the water supply flow passage. The automatic washing and protecting additive feeding device provided by the invention is provided with the pressure regulating device which automatically regulates the opening and closing of the vent hole along with the pressure in the pipeline so as to correspondingly regulate the pressure in the pipeline, avoid the negative pressure in the pipeline and further achieve the purpose of preventing backflow.
Description
Technical Field
The invention relates to the technical field of clothes treatment devices, in particular to an automatic additive feeding device and a washing machine.
Background
Along with the increase of consumption level, consumers have higher requirements on the quality of daily life, so that the demand on intelligent household appliances is generated, most of washing machine products sold in the current market adopt an automatic delivery system, detergent and softener can be intelligently added, a user only needs to add a large amount of washing and protecting agent at one time, and then the trouble of adding the washing and protecting agent every time of use is avoided.
But at the same time this also brings about problems:
suction devices for pumping out the laundry care additive by using negative pressure are generally installed on waterways of the automatic dispensing device, for example: venturi, suction pump, etc. There is a certain demand for the flow rate of the supply water during the actual use of the suction device. When the flow rate of the water supply flow is too large and the water pressure is too high, the water flow generates great sealing pressure through a pipeline in front of the suction structure. The sealing pressure has a great risk to the tightness of the dispensing device: when the flow is too large, even if the sealing measures of the water path are solved through various measures, the leakage and the pipe explosion of the pipeline still exist. Cracking and the like.
Meanwhile, the difference of water pressure at different runner sections is too large, and negative pressure is easily formed in the runners, so that the normal pumping of the washing and protecting additive and the smoothness of water flow in the runners are influenced. Particularly, when the suction structure adopts the venturi tube, because the water inlet end of the venturi tube is a pipeline with the minimum diameter, closed pressure is easily generated, and the water inlet flow of the venturi tube cannot meet the use requirement and cannot pump out the washing and protecting additive.
In addition, the washing machine has the anti-suck-back requirement in all the world standards, and the anti-suck-back function of the automatic dispensing device is also indispensable. In order to realize the functions, the functions can be realized by additionally arranging a single check valve in a flow passage of the automatic feeding device or arranging an air gap, namely communicating a pipeline with the atmosphere. However, the waterway of the existing automatic dispensing device has no better structural form to realize the suck-back prevention function of the water inlet channel.
In view of the above, the present invention is particularly proposed.
Disclosure of Invention
The invention aims to provide an automatic additive feeding device and a washing machine using the same, which achieve the purpose of automatically regulating and shunting water supply flow; the invention also aims to provide an automatic additive feeding device to achieve the purpose of preventing water supply flow from being sucked.
In order to achieve the purpose, the invention specifically adopts the following technical scheme:
an automatic additive delivery device comprising: a water supply flow passage; a reservoir containing an additive; the pumping structure can pump the additive in the liquid storage box to the water supply flow channel and convey the additive to the water outlet along with water flow; the anti-suck-back device is arranged at the pressure regulating port of the water supply flow passage; when water enters the water supply channel, the anti-suck-back device is controlled to close the pressure regulating port under the action of the pressure of the flowing water; when negative pressure is generated in the water supply flow passage, the anti-suck-back device is controlled to open the pressure regulating port and regulate the pressure in the water supply flow passage.
Furthermore, the suck-back prevention device comprises a valve plate, and the valve plate is correspondingly covered at the pressure regulating port on the inner side of the water supply flow channel; preferably, the periphery of the valve plate protrudes out of the pressure regulating port, so that the valve plate is in sealing contact with the inner wall of the water supply flow channel when the valve plate is pressed by water pressure to seal the pressure regulating port, and at least one circle of sealing ring is arranged at the joint surface of the valve plate and the water supply flow channel.
Furthermore, a support penetrating through the pressure regulating port is arranged on the valve plate towards the outer side of the water supply flow channel, an end cover is arranged at the delivery end of the support, and the spring structure is clamped between the end cover and the valve core, so that the valve plate can only move telescopically along the axial direction of the pressure regulating port under the limiting action of the support.
Furthermore, an opening is formed in the valve plate, a valve core is installed at the opening, the valve core is installed at the opening through an elastic structure, the valve core correspondingly seals the pressure regulating port under the action of the elastic force of the elastic structure, when the pressure of water flow flowing through the pressure regulating cavity is larger than a set value, the elastic force is overcome, the valve core is pushed to open the pressure regulating port, and the water flow in the water supply flow channel is subjected to pressure regulating and shunting.
Furthermore, the valve core is arranged at a pressure regulating port on the outer side of the pressure regulating cavity, and the elastic structure provides elastic force from the outer part of the pressure regulating cavity to the inner direction to the valve core so that the valve core corresponds to the sealed pressure regulating port; the water flow flowing through the pressure regulating cavity applies outward moving pressure to the valve core, and when the water flow pressure is larger than a set value, the water flow pressure overcomes the elastic force to push the valve core to move outward and open the pressure regulating port.
Further, the pressure regulating port is communicated with the water distribution flow passage, and the end part of the water distribution flow passage is communicated with a water outlet of the automatic feeding device.
Further, a pressure regulating cavity is arranged on the water supply flow channel, a pressure regulating port is arranged on the pressure regulating cavity, the valve plate correspondingly covers the pressure regulating port on the inner side of the pressure regulating cavity, and the valve plate correspondingly seals the pressure regulating port under the water pressure in the cavity; the valve core covers the valve plate opening on the outer side of the pressure regulating cavity correspondingly, and the valve core is opened or has a tendency of opening by water pressure in the cavity.
Furthermore, the upper side and the lower side of the pressure regulating cavity in the vertical direction are respectively provided with an inlet and a pressure regulating port, one side wall of the pressure regulating cavity is provided with an outlet connected with the suction structure, and the valve plate overcomes the gravity and moves upwards to close the pressure regulating port under the pressure of water flow flowing into the cavity; preferably, the inlet is arranged coaxially with the pressure regulating port.
Further, the lower side of the valve plate is arranged opposite to the inlet, so that when the water supply is stopped in the water supply channel and negative pressure is generated in the pressure regulating cavity, the valve plate moves downwards to cover the water inlet in a sealing manner under the action of gravity.
The invention also provides a washing machine which is characterized in that any one of the automatic feeding devices is installed, and the water outlet of the automatic feeding device is connected with the washing drum so as to feed the additive pumped out by the water flow in the water supply channel in the liquid storage box into the washing drum along with the inlet water flow of the washing machine.
The invention has the beneficial effects that:
1. the water inlet waterway of the automatic washing and protecting additive feeding device provided by the invention is provided with the pressure regulating device so as to automatically regulate the pressure of the water inlet flow, and the automatic opening of water supply shunting is realized when the pressure of the water supply flow is overlarge, so that the purposes of automatically regulating the pressure of the water inlet flow and adaptively regulating the water pressure of the water inlet end of the suction structure are achieved.
2. The automatic feeding device for the washing and protecting additive is provided with the anti-backflow device which can automatically adjust the opening and closing of the vent hole along with the pressure in the pipeline so as to correspondingly adjust the pressure in the pipeline, avoid the negative pressure in the pipeline and further achieve the aim of preventing backflow.
3. The automatic washing and protecting additive feeding device provided by the invention is provided with the anti-suck-back device which can automatically lift and displace along with the pressure in the pipeline, so as to achieve the effect of automatically controlling the opening and closing of the vent hole, and further realize the use purposes of utilizing water pressure to seal the pressure regulating port during normal water inlet of the automatic feeding device, generating negative pressure and correspondingly opening the pressure regulating port under the action of self weight when water inlet is stopped.
Meanwhile, the invention has simple structure and obvious effect and is suitable for popularization and application.
Drawings
Fig. 1 is a schematic connection diagram of an automatic dispensing device in embodiment 1 of the present invention.
Fig. 2 is a schematic connection diagram of the automatic dispensing device in embodiments 2 and 3 of the present invention.
Fig. 3 is a schematic structural diagram of an automatic dispensing device in an embodiment of the present invention.
Fig. 4 is a schematic top view of the automatic dispensing device in the embodiment of the present invention.
FIG. 5 is a schematic cross-sectional view of the structure of the section C-C shown in FIG. 4 according to an embodiment of the present invention.
FIG. 6 is a schematic cross-sectional view of the structure of FIG. 4 taken along line D-D in an embodiment of the present invention.
Fig. 7 is an enlarged schematic view of a portion a of fig. 6 according to an embodiment of the present invention.
Fig. 8 is a schematic view of an installation structure of a pressure regulating device of the automatic dispensing device in the embodiment of the present invention.
Fig. 9 is an exploded view of the pressure regulating device shown in fig. 6 according to an embodiment of the present invention.
The main components in the figure are: 100-water supply flow channel, 200-liquid storage box, 300-washing barrel, 400-suction structure, 500-pressure regulating cavity, 600-water box, 1-inlet, 2-outlet, 3-pressure regulating port, 4-valve core, 5-elastic structure, 6-valve plate, 7-opening, 8-bracket, 9-end cover, 10-water dividing flow channel, 11-sleeve, 12-sealing gasket, 13-sealing ring, 14-groove, 15-convex rib and 50-spring.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
Example 1
In this embodiment, as shown in fig. 1, an automatic additive feeding device is provided, which includes: the water supply channel 100 may supply the inflow water to the suction structure 400. The reservoir 200 contains additives, which may be any of the existing liquid detergents, softeners, fragrances, disinfectants, etc. The pumping structure 400 is capable of pumping out the additive in the liquid storage box 200 by generating negative pressure to the water flowing through the water supply channel 100 and delivering the additive to the water outlet along with the water flow; the pumping mechanism 400 may be any conventional device that generates negative pressure to draw additive into a water stream, such as a suction pump, venturi, etc. And a pressure regulating device provided on the water supply flow passage 100 to regulate the pressure of the flowing water, so as to distribute the flow of water flowing to the suction structure 400 when the pressure of the supplied water flow is excessive.
The water inlet waterway of the automatic washing and protecting additive feeding device provided by the invention is provided with the pressure regulating device so as to automatically regulate the pressure of the water inlet flow, and the automatic opening of water supply shunting is realized when the pressure of the water supply flow is overlarge, so that the purposes of automatically regulating the pressure of the water inlet flow and adaptively regulating the water pressure of the water inlet end of the suction structure are achieved.
In this embodiment, be equipped with pressure regulating chamber 500 on water supply runner 100, pressure regulating chamber 500 top is equipped with pressure regulating mouth 3, the pressure regulating device can correspond to cover closed 3 departments of pressure regulating mouth of locating under the effect of rivers pressure to after water supply rivers pressure is greater than the setting value, make the pressure regulating device open pressure regulating mouth 3 under the effect of rivers pressure.
In this embodiment, the pressure regulating device includes a valve core 4 installed at the pressure regulating port 3 via an elastic structure 5, the valve core 4 is sealed by the pressure regulating port 3 under the elastic action of the elastic structure 5, and when the pressure of the water flowing through the pressure regulating cavity 500 is greater than a set value, the valve core 4 is overcome by the elastic force and is pushed to open the pressure regulating port 3.
In this embodiment, the valve core is disposed at the pressure regulating port 3 outside the pressure regulating cavity 500, and the elastic structure 4 provides an elastic force from the outside of the pressure regulating cavity 500 to the inside direction to the valve core 4, so that the valve core 4 corresponds to the sealed pressure regulating port 3; the water flow flowing through the pressure regulating cavity 500 applies outward moving pressure to the valve core 4, and when the water flow pressure is greater than a set value, the water flow pressure overcomes the elastic force to push the valve core 4 to move outward and open the pressure regulating port 3.
In this embodiment, the pressure regulating port 3 is communicated with the water diversion channel 10, and the end of the water diversion channel 10 is communicated with the water outlet of the automatic additive feeding device, so as to bypass the diversion inflow water around the suction structure 400 and directly lead the diversion inflow water to the water outlet, thereby avoiding the occurrence of the situations such as overlarge impact force on the suction structure 400, channel breakage and the like.
Example 2
This embodiment is based on embodiment 1 above, and has the following differences: in this embodiment, as shown in fig. 2, the pressure regulating device is vertically movably installed in the pressure regulating cavity 500 up and down, so as to overcome its own gravity to push the pressure regulating device to rise up to the corresponding closed pressure regulation/3 under the action of the water pressure flowing into the pressure regulating cavity 500 from the water supply channel 100; an opening 7 which communicates the inside and the outside of the chamber is arranged on the pressure regulating device, the valve core 4 is correspondingly arranged at the opening 7, the valve core 4 correspondingly seals the opening 7 under the action of the elastic force of the elastic structure 5, and when the pressure of water flowing through the pressure regulating cavity 500 is greater than a set value, the valve core 4 is overcome to the elastic force and is pushed to open the opening 7.
In this embodiment, the pressure regulating device includes a horizontally disposed valve plate 6, the valve plate 6 can relatively move up and down in a telescopic manner along with the pressure change of the water flow flowing into the pressure regulating cavity 500 through the water supply flow channel 100, so that the valve plate 6 is pushed by the pressure of the water flow flowing through the water supply flow channel 100 to correspond to the sealed pressure regulating port, and the valve plate 6 opens the pressure regulating port 3 under the action of gravity when the negative pressure is generated in the water supply flow channel 100.
In this embodiment, the valve plate 6 is provided with an opening 7 penetrating the upper and lower sides and communicating the inside and outside of the pressure regulating cavity 500, the valve core 4 is disposed at the opening 7, and the valve core is pushed by the elastic structure 5 to seal the opening 7 correspondingly. In this embodiment, the valve core 4 is disposed at the opening 7 on the upper side of the valve plate 6, and the elastic structure 5 provides an elastic force from top to bottom to the valve core 4 in the direction toward the interior of the pressure regulating cavity 500, so that the valve core 4 corresponds to the opening 7 of the sealing valve plate 6; the water flow flowing through the pressure regulating cavity 500 applies outward moving pressure to the valve core 4, when the water flow pressure is greater than a set value, the water flow pressure overcomes the elastic force to push the valve core 4 to move outward and open the opening 7, so that the pressure regulating port 3 is opened, the large-flow and high-pressure water inlet in the water supply channel 100 can flow out through the opening 7 and the pressure regulating port 3, and the purpose of distributing the inlet water is achieved
In this embodiment, the valve plate 6 is provided with a limiting structure correspondingly inserted into the pressure regulating port 3, so as to ensure that the valve plate 6 can only vertically move up and down under the action of self gravity and water flow pressure. In this embodiment, the limiting structure is specifically as follows: the valve plate 6 is connected with a support 8 extending towards the outer side of the pressure regulating cavity 500, a compressed spring 50 is arranged between the support 8 and the valve plate 6, and two ends of the spring 50 are respectively connected with the support 8 and the valve core 4. Preferably, in this embodiment, the valve plate 6 is provided with a support 8 penetrating through the pressure regulating port 3 towards the outside of the water supply channel 100, the end cover 9 with a hollow hole is provided at the outgoing end of the support 8, the spring 50 is clamped between the end cover 9 and the valve core 4 in a compressed state, and two ends of the spring 50 are respectively connected with the valve core 4 and the end cover 9, so that the valve plate 6 is limited at the pressure regulating port 3 under the action of the support 8 and can only move in a telescopic manner along the axial direction of the pressure regulating port 3, and the water diversion flow in the pressure regulating cavity 500 flows out of the water supply channel 100 from the opening 7 and the pressure regulating port 3, thereby achieving the purpose of automatically regulating and shunting the inflow water.
In this embodiment, the periphery of the valve plate 6 protrudes from the pressure regulating port 3, so that when the valve plate 6 is pressurized by water pressure to seal the pressure regulating port 3, the valve plate 6 is in sealing contact with the inner wall of the water supply flow channel 100, and at least one circle of sealing ring is arranged at the joint surface of the valve plate 6 and the water supply flow channel 100; preferably, the periphery of the valve plate 6 is wrapped with a circle of sealing ring made of elastic materials. In this embodiment, a circle of sealing ring is sleeved on the outer periphery of the valve core 4, so that when the valve core 4 is in corresponding sealing contact with the opening 7 of the valve plate 6, the sealing ring arranged on the valve core 4 is located at the joint surface of the valve core 4 and the valve plate 6, so as to ensure the sealing property of the opening 7 of the valve plate 6.
Example 3
In this embodiment, as shown in fig. 2, an automatic additive feeding device is provided, which includes: the water supply channel 100 may supply the inflow water to the suction structure 400. The reservoir 200 contains additives, which may be any of the existing liquid detergents, softeners, fragrances, disinfectants, etc. The pumping structure 400 is capable of pumping out the additive in the liquid storage box 200 by generating negative pressure to the water flowing through the water supply channel 100 and delivering the additive to the water outlet along with the water flow; the pumping mechanism 400 may be any conventional device that generates negative pressure to draw additive into a water stream, such as a suction pump, venturi, etc. The suck-back prevention device is arranged at the pressure regulating port 3 of the water supply flow passage 100; when water enters the water supply flow channel 100, the anti-suck-back device is controlled to close the pressure regulating port 3 under the action of the pressure of the flowing water; when negative pressure is generated in the water supply flow passage 100, the suck back prevention device is controlled to open the pressure regulating port 3 and regulate the negative pressure in the water supply flow passage 100.
The automatic feeding device for the washing and protecting additive is provided with the anti-backflow device which can automatically adjust the opening and closing of the vent hole along with the pressure in the pipeline so as to correspondingly adjust the pressure in the pipeline, avoid the negative pressure in the pipeline and further achieve the aim of preventing backflow. Meanwhile, the automatic washing and protecting additive feeding device provided by the invention is provided with the anti-suck-back device which can automatically lift and displace along with the pressure in the pipeline, so that the effect of automatically controlling the opening and closing of the vent hole is achieved, and the use purposes that the pressure regulating port is closed by using water pressure when the automatic feeding device normally feeds water, negative pressure is generated, and the pressure regulating port is correspondingly opened under the action of self weight when the water feeding is stopped are further achieved.
In this embodiment, the anti-suck back device includes a valve plate 6, and the valve plate 6 covers the pressure regulating port 3 inside the water supply flow channel 100 correspondingly. The periphery of the valve plate 6 protrudes out of the pressure regulating port 3, so that when the valve plate 6 is pressed by water pressure to seal the pressure regulating port 3, the valve plate 6 is in sealing contact with the inner wall of the water supply flow channel 100, and at least one circle of sealing ring is arranged at the joint surface of the valve plate 6 and the water supply flow channel 100.
In this embodiment, the upper side and the lower side of the pressure regulating cavity 500 in the vertical direction are respectively provided with an inlet 1 and a pressure regulating port 3, one side wall of the pressure regulating cavity 500 is provided with an outlet 2 connected with the suction structure 400, and the valve plate 6 overcomes the gravity and moves upwards to close the pressure regulating port 3 under the pressure of water flowing into the cavity; preferably, the inlet 1 is arranged coaxially with the pressure regulating port 3.
In this embodiment, the lower side of the valve plate 6 is disposed opposite to the inlet 1, so that when the water supply in the water supply channel 100 is stopped and negative pressure is generated in the pressure regulating chamber 500, the valve plate 6 moves downward to cover the inlet 1 in a sealing manner under the action of gravity.
In this embodiment, the valve sheet 6 is provided with a support 8 passing through the pressure regulating port 3 towards the outside of the water supply flow channel 100, and the upper end of the support 8 passes through the pressure regulating port 3 and is provided with an end cover 9, so that the valve sheet 6 can only move in a telescopic manner along the axial direction of the pressure regulating port 3 under the limiting action of the support 8.
In this embodiment, the valve plate 6 is provided with an opening 7, the opening 7 is provided with a valve core 4, the valve core 4 is arranged at the opening 7 through an elastic structure 5, the valve core 6 is correspondingly sealed with the pressure regulating port 3 under the elastic action of the elastic structure 5, and when the water flow pressure flowing through the pressure regulating cavity 500 is greater than a set value, the valve core 4 is overcome the elastic force and pushed to open the pressure regulating port 3.
In this embodiment, the valve core 4 is disposed at the pressure regulating port 3 outside the pressure regulating cavity 500, and the elastic structure 5 provides an elastic force from the outside of the pressure regulating cavity 500 to the inside of the pressure regulating cavity 4, so that the valve core 4 corresponds to the pressure regulating port 3; the water flow flowing through the pressure regulating cavity 500 applies outward moving pressure to the valve core 4, and when the water flow pressure is greater than a set value, the water flow pressure overcomes the elastic force to push the valve core 4 to move outward and open the pressure regulating port 3.
In this embodiment, the pressure regulating port 3 is communicated with the water diversion channel 10, the end of the water diversion channel 10 is communicated with the water outlet of the automatic feeding device, the water outlet is inside the water box of the automatic feeding device, and the pressure at the water outlet is atmospheric pressure or equal to the pressure in the washing drum 300 of the washing machine.
In this embodiment, the water supply flow channel 100 is provided with a pressure regulating cavity 500, the pressure regulating cavity 500 is provided with a pressure regulating port 3, the valve plate 6 correspondingly covers the pressure regulating port 3 at the inner side of the pressure regulating cavity 500, and the valve plate 6 correspondingly seals the pressure regulating port 3 under the water pressure in the cavity; the valve core 4 covers the opening 7 of the valve plate 6 outside the pressure regulating cavity 500 correspondingly, and the valve core 4 is subjected to water pressure in the cavity to open the opening 7 or has a tendency of opening the opening 7.
Example 4
As shown in fig. 1 to 9, the present embodiment describes an automatic dispensing device, including: the water box 600, the water box 600 is equipped with the pressure regulating cavity 500, the pressure regulating cavity 500 is equipped with the inlet 1 connected with the water inlet pipe, the outlet 2 connected with the suction structure 400, the top of the pressure regulating cavity 500 is also equipped with the pressure regulating port 3 communicated with the outside, the pressure regulating cavity 500 is equipped with the valve plate 6 capable of vertically moving up and down, so as to correspondingly close or open the pressure regulating port 3 under the pressure effect in the cavity; the valve plate 6 is provided with an opening 7, the opening 7 is provided with a valve core 4 for sealing the valve core, and the valve core 4 is arranged on the valve plate 6 through an elastic structure 5 so as to push the valve core 4 and open the opening 7 when the pressure of water flow in the water supply flow passage 100 is overlarge.
In this embodiment, the outlet 2 is disposed at one side of the pressure regulating chamber 500, and the outlet 2 is connected to the small-caliber inlet end of the venturi tube constituting the pumping structure 400; the inlet 1 is arranged at the bottom of the pressure regulating cavity 500; the water inlet of the pressure regulating cavity 500 is coaxial with the pressure regulating port 3.
In this embodiment, the top wall of the pressure regulating cavity 500 is provided with a through sleeve 11, and a hollow channel of the sleeve 11 forms the pressure regulating port 3; the valve block 6 is correspondingly covered at the lower end of the sleeve 11, and the valve block 6 is connected with a limiting structure which is inserted into the sleeve 11, so that the valve block 6 can move in a telescopic manner along the vertical direction under the combined action of gravity and water flow pressure.
In the embodiment, the limiting structure comprises a vertically extending bracket 8, the outer wall of the bracket 8 is in corresponding limiting contact with the inner wall of the sleeve 11, the lower end of the bracket 8 is fixedly connected with the valve plate 6, and the upper end of the bracket 8 is provided with an end cover 9; the height of the bracket 8 is not more than the height of the sleeve 11 and not less than the height difference between the bottom end of the sleeve 11 and the inlet of the pressure regulating cavity 500. In this embodiment, the end cap 9 is provided with a plurality of hollow holes penetrating through the upper and lower sides. Preferably, the end cap 9 has an annular rib covering the outer wheel buckle and a plurality of straight ribs arranged at intervals along the radial direction, the inner ends of the straight ribs are converged and fixed at the circle center of the annular rib, and the outer ends of the straight ribs are fixed with the inner periphery of the annular rib. The gaps between the straight ribs form hollow holes which are communicated with the upper side and the lower side.
In this embodiment, opening 7 is located the center department of valve block 6, and case 4 is the column and passes opening 7, and the upper end of column case 4 is equipped with the outside convex round bulge, and the periphery of bulge surpasss opening 7, makes column case 4 correspond sealed opening 7 from top to bottom under the action of gravity.
In this embodiment, the bottom of the pressure regulating cavity 500 is provided with a groove 14 recessed downward, and the open shape of the groove 14 is opposite to the valve plate 6, so that when the valve plate 6 falls to the bottom of the pressure regulating cavity 500 under the action of gravity and/or negative pressure, the lower side of the valve plate 6 is in sealing contact with the open periphery of the groove 14 of the pressure regulating cavity 500, and the inlet is closed. Preferably, a circle of convex ribs 15 protruding upwards is arranged on the bottom wall of the pressure regulating cavity 500, the convex ribs 15 and the sealing gaskets 12 arranged on the valve plate 4 are coaxially arranged in an equal size, so that when the valve plate is lowered to the bottom of the pressure regulating cavity by negative pressure and/or dead weight, the sealing gaskets 12 correspond to the closed inlet 1.
In this embodiment, the lower end of the cylindrical valve core 4 protruding from the valve plate 6 corresponds to the inlet 1 of the pressure regulating cavity 500, so that when the valve plate falls to the bottom of the pressure regulating cavity 500 under the action of gravity and/or negative pressure, the lower end of the cylindrical valve core 4 is in corresponding sealing insertion with the inlet 1. Preferably, the lower end of the cylindrical valve core 4 is in a smooth semi-spherical shape, and the outer peripheral side of the cylindrical valve core 4 is correspondingly attached and contacted with the inner wall of the pipeline at the inlet 1 at the lower end of the pressure regulating cavity 500, so that the lower end of the cylindrical valve core 4 is correspondingly inserted into the inlet 1 and then is in sealing contact with the inlet 1, and the purpose that the inlet 1 of the pressure regulating cavity 500 is sealed by the cylindrical valve core 4 after the valve plate 6 is wholly descended is further achieved.
In this embodiment, the inlet 1 of the pressure regulating cavity 500 is disposed between the sleeve and the sidewall of the pressure regulating cavity 500, and the outer circumference of the valve plate 6 is larger than the circumference of the lower end of the sleeve 11 and smaller than the circumference of the inner sidewall of the pressure regulating cavity 3, so that the water flowing into the cavity from the inlet flows from the gap between the sleeve 11 and the wall of the pressure regulating cavity 500 to the outlet 2.
In this embodiment, the elastic structure 5 is a vertically extending spring 50, the spring 50 is compressively installed between the bracket end cover 9 and the valve core 4, and two ends of the spring 50 are respectively connected with the end cover 9 and the valve core 4. In this embodiment, support 8 includes the splice bar of many vertical extensions, and splice bar's upper end and end cover 9 looks fixed connection, lower extreme and valve block 6 looks fixed connection, between the adjacent splice bar and/or be equipped with the fretwork region that supplies rivers to pass on the splice bar. Preferably, the ribs are disposed along a cylindrical surface that conforms to the inner wall of the sleeve 11, and the spring 50 is disposed within the area bounded by the ribs.
In this embodiment, the water box 600 of the automatic dispensing device includes a top cover 700 fastened to the top, the top cover 700 protrudes downwards to form a pressure regulating cavity 500, and the pressure regulating cavity 500 and the top cover 700 or the water box 600 are integrally formed; the upper side of the top cover 700 is provided with a water diversion channel 10, a pressure regulating port arranged at the top of the pressure regulating cavity 500 is communicated with the water diversion channel 10, the water diversion channel 10 extends to the outlet 2 of the water box 600 or the washing barrel 300, and the inlet water flow which is subjected to partial pressure outflow directly flows into the water box 600, so that the purpose of automatically regulating the pressure of the inlet water flow is realized; meanwhile, the pressure regulating port 3 is directly communicated with the outside atmosphere to regulate the negative pressure in the water supply flow passage 100.
In this embodiment, at least one sealing ring is disposed at the joint of the valve plate 6 and the pressure regulating port 3, at least one sealing ring is disposed at the joint of the valve plate 6 and the inlet 1 of the pressure regulating cavity 500, and at least one sealing ring 13 is disposed at the joint of the valve plate 6 and the valve core 4. In this embodiment, the outer periphery of the valve plate 6 is wrapped with a layer of sealing gasket 12 made of elastic material and covering the upper and lower sides; the periphery of the middle part of the columnar valve core 4 is sleeved with at least one circle of sealing ring 13 made of elastic material. Preferably, a circle of convex ribs 15 protruding upwards is arranged on the bottom wall of the pressure regulating cavity 500, and the convex ribs 15 and the sealing gaskets 12 arranged on the valve plate 4 are arranged coaxially and equidistantly.
Example 5
This embodiment further provides a washing machine, wherein the washing machine is provided with the automatic feeding device according to any one of embodiments 1 to 4, and a water outlet of the automatic feeding device is connected to the washing drum 300, so that the additive pumped from the liquid storage tank 200 to the water box 600 by the water inflow of the washing machine is fed into the washing drum 300 along with the water inflow of the washing machine.
The foregoing is considered as illustrative of the preferred embodiments of the invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention.
Claims (10)
1. An automatic additive delivery device comprising:
a water supply flow passage;
a reservoir containing an additive;
the pumping structure can pump the additive in the liquid storage box to the water supply flow channel and convey the additive to the water outlet along with water flow;
the anti-suck-back device is arranged at the pressure regulating port of the water supply flow passage; when water enters the water supply channel, the anti-suck-back device is controlled to close the pressure regulating port under the action of the pressure of the flowing water; when negative pressure is generated in the water supply flow passage, the anti-suck-back device is controlled to open the pressure regulating port and regulate the pressure in the water supply flow passage.
2. The automatic additive feeding device according to claim 1, wherein the suck-back prevention device comprises a valve plate, and the valve plate is correspondingly covered at the pressure regulating port inside the water supply flow passage;
preferably, the periphery of the valve plate protrudes out of the pressure regulating port, so that the valve plate is in sealing contact with the inner wall of the water supply flow channel when the valve plate is pressed by water pressure to seal the pressure regulating port, and at least one circle of sealing ring is arranged at the joint surface of the valve plate and the water supply flow channel.
3. The automatic additive feeding device according to claim 2, wherein the valve plate is provided with a support passing through the pressure regulating port towards the outside of the water supply flow passage, the delivery end of the support is provided with an end cap, and the spring structure is clamped between the end cap and the valve core, so that the valve plate can only move telescopically along the axial direction of the pressure regulating port under the limiting action of the support.
4. The automatic additive feeding device according to any one of claims 1 to 3, wherein an opening is formed in the valve plate, a valve core is installed at the opening, the valve core is installed at the opening through an elastic structure, the valve core is correspondingly sealed with the pressure regulating port under the elastic action of the elastic structure, and when the pressure of the water flowing through the pressure regulating cavity is greater than a set value, the valve core is overcome by the elastic force and pushed to open the pressure regulating port, so that the water flowing in the water supply channel is subjected to pressure regulating and flow dividing.
5. The automatic additive feeding device according to claim 4, wherein the valve core is arranged at the pressure regulating port outside the pressure regulating cavity, and the elastic structure provides the valve core with an elastic force from the outside of the pressure regulating cavity to the inside thereof, so that the valve core corresponds to the sealed pressure regulating port; the water flow flowing through the pressure regulating cavity applies outward moving pressure to the valve core, and when the water flow pressure is larger than a set value, the water flow pressure overcomes the elastic force to push the valve core to move outward and open the pressure regulating port.
6. The automatic additive feeding device according to any one of claims 1 to 5, wherein the pressure regulating port is communicated with the water diversion channel, and an end of the water diversion channel is communicated with a water outlet of the automatic feeding device.
7. The automatic additive feeding device according to any one of claims 1 to 6, wherein a pressure regulating cavity is arranged on the water supply channel, a pressure regulating port is arranged on the pressure regulating cavity, the valve sheet correspondingly covers the pressure regulating port on the inner side of the pressure regulating cavity, and the valve sheet correspondingly seals the pressure regulating port under the water pressure in the cavity; the valve core covers the valve plate opening on the outer side of the pressure regulating cavity correspondingly, and the valve core is opened or has a tendency of opening by water pressure in the cavity.
8. The automatic additive feeding device according to claim 7, wherein the pressure regulating chamber is provided with an inlet and a pressure regulating port at the upper and lower sides in the vertical direction, an outlet connected to the suction structure is provided on one side wall of the pressure regulating chamber, and the valve plate is moved upward to close the pressure regulating port against gravity by the pressure of water flowing into the chamber;
preferably, the inlet is arranged coaxially with the pressure regulating port.
9. The automatic additive feeding device according to claim 8, wherein the lower side of the valve plate is disposed opposite to the inlet, so that when the water supply is stopped in the water supply channel and the negative pressure is generated in the pressure regulating chamber, the valve plate moves downward to cover the water inlet in a sealing manner under the action of gravity.
10. A washing machine, characterized in that an automatic dispensing device as claimed in any one of claims 1 to 9 is installed, and the water outlet of the automatic dispensing device is connected to the washing tub, so that the additive pumped out from the liquid storage tank by the water flow in the water supply passage is fed into the washing tub along with the water flow of the washing machine.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910048382.8A CN111455628B (en) | 2019-01-18 | 2019-01-18 | Automatic additive feeding device and washing machine |
| EP20723972.4A EP3702516B1 (en) | 2019-01-18 | 2020-01-16 | Automatic additive feeding device and washing machine |
| JP2021538071A JP7442026B2 (en) | 2019-01-18 | 2020-01-16 | Additive automatic dosing device and washing machine |
| PCT/CN2020/072362 WO2020147767A1 (en) | 2019-01-18 | 2020-01-16 | Automatic additive feeding device and washing machine |
| US17/414,636 US20220064843A1 (en) | 2019-01-18 | 2020-01-16 | Additive auto-feeding device and washing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910048382.8A CN111455628B (en) | 2019-01-18 | 2019-01-18 | Automatic additive feeding device and washing machine |
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| Publication Number | Publication Date |
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| CN111455628A true CN111455628A (en) | 2020-07-28 |
| CN111455628B CN111455628B (en) | 2022-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910048382.8A Active CN111455628B (en) | 2019-01-18 | 2019-01-18 | Automatic additive feeding device and washing machine |
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| CN (1) | CN111455628B (en) |
Cited By (1)
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|---|---|---|---|---|
| CN112481943A (en) * | 2020-12-25 | 2021-03-12 | 珠海格力电器股份有限公司 | Washing water feeding device and clothes treatment equipment thereof |
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| CN111455628B (en) | 2022-04-05 |
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Effective date of registration: 20220224 Address after: Room 221, Sino German Ecological Park Management Committee, No. 2877, Tuanjie Road, Huangdao District, Qingdao, Shandong 266500 Applicant after: QINGDAO HAIER WASHING ELECTRIC APPLIANCES Co.,Ltd. Applicant after: Haier Zhijia Co., Ltd Address before: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao Applicant before: QINGDAO HAIER DRUM WASHING MACHINE Co.,Ltd. |
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