WO2020147767A1 - 一种添加剂自动投放装置及洗衣机 - Google Patents

一种添加剂自动投放装置及洗衣机 Download PDF

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Publication number
WO2020147767A1
WO2020147767A1 PCT/CN2020/072362 CN2020072362W WO2020147767A1 WO 2020147767 A1 WO2020147767 A1 WO 2020147767A1 CN 2020072362 W CN2020072362 W CN 2020072362W WO 2020147767 A1 WO2020147767 A1 WO 2020147767A1
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WO
WIPO (PCT)
Prior art keywords
pressure regulating
water
pressure
valve plate
water supply
Prior art date
Application number
PCT/CN2020/072362
Other languages
English (en)
French (fr)
Inventor
黄涛
蒋玉亮
Original Assignee
青岛海尔滚筒洗衣机有限公司
海尔智家股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201910048382.8A external-priority patent/CN111455628B/zh
Priority claimed from CN201910047924.XA external-priority patent/CN111455619B/zh
Priority claimed from CN201910047951.7A external-priority patent/CN111455624B/zh
Application filed by 青岛海尔滚筒洗衣机有限公司, 海尔智家股份有限公司 filed Critical 青岛海尔滚筒洗衣机有限公司
Priority to US17/414,636 priority Critical patent/US20220064843A1/en
Priority to EP20723972.4A priority patent/EP3702516B1/en
Priority to JP2021538071A priority patent/JP7442026B2/ja
Publication of WO2020147767A1 publication Critical patent/WO2020147767A1/zh

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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 
    • D06F39/02—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 
    • D06F39/08—Liquid supply or discharge arrangements
    • D06F39/088—Liquid supply arrangements

Definitions

  • the invention relates to the technical field of laundry treatment devices, and in particular to an automatic additive injection device and a washing machine.
  • the waterway of the automatic dispensing device is generally installed with a suction device that uses negative pressure to extract the detergent additives, such as: venturi, suction pump, etc.
  • a suction device that uses negative pressure to extract the detergent additives, such as: venturi, suction pump, etc.
  • the suction device In the actual use of the suction device, there are certain requirements for the water supply flow.
  • the sealing pressure has a great risk to the sealing of the dispensing device: when the flow is too large, even if the sealing measures of the waterway are solved by various measures, there are still pipeline leaks and pipe bursts. Risks such as cracking.
  • washing machines have anti-suckback requirements in standards around the world, and the anti-suckback function of the automatic dispenser is also essential.
  • it can be achieved by adding a single check valve in the flow channel of the automatic dispensing device, or setting an air gap, that is, connecting the pipeline with the atmosphere.
  • the water path in the existing automatic dispensing device does not have a better structure to realize the anti-back suction function of the water inlet flow path.
  • the present invention aims to provide an automatic additive injection device and a washing machine using the device to realize the purpose of automatically adjusting the pressure and diversion of the water supply flow; another object of the present invention is to provide an automatic additive injection device to prevent the water flow from falling The purpose of the suction function.
  • An automatic additive dispensing device includes: a water supply flow channel; a liquid storage box containing additives; a suction structure capable of pumping the additive in the liquid storage box to the water supply flow channel and transporting the additive to the water outlet along with the water flow; preventing falling
  • the suction device is located at the pressure regulating opening of the water supply flow channel; when the water supply flow channel enters water, the anti-suction device is controlled by the pressure of the flowing water to close the pressure regulating opening; when negative pressure is generated in the water supply flow channel, the control The suction device opens the pressure regulating port and regulates the pressure in the water supply flow channel.
  • the anti-suckback device includes a valve plate corresponding to the pressure regulating port covering the inner side of the water supply flow channel; preferably, the outer periphery of the valve plate protrudes from the pressure regulating port, so as to seal the regulating valve under water pressure.
  • the valve disc When pressing the port, the valve disc is in sealing contact with the inner wall of the water supply flow channel, and at least one sealing ring is provided at the junction surface of the valve disc and the water supply flow channel.
  • valve plate is provided with a bracket passing through the pressure regulating port toward the outside of the water supply flow channel, and the outgoing end of the bracket is provided with an end cover.
  • the spring structure is clamped between the end cover and the valve core, so that the valve plate is restricted by the bracket. Under the action, it can only produce telescopic movement along the axial direction of the pressure regulating port.
  • valve plate is provided with an opening, and a valve core is installed at the opening.
  • the valve core is installed at the opening through an elastic structure.
  • the valve core is subjected to the elastic force of the elastic structure to seal the pressure regulating port.
  • the pressure of the water flowing through the pressure regulating chamber is greater than the set pressure. Overcome the elastic force at the time of value and push the valve core to open the pressure regulating port, and the water flow in the water supply channel is pressure regulated and divided.
  • valve core is arranged at the pressure regulating port outside the pressure regulating chamber, and the elastic structure provides the valve core with an elastic force from the outside of the pressure regulating chamber to the inside direction, so that the valve core corresponds to the sealing pressure regulating port; the water flowing through the pressure regulating chamber Apply pressure to the valve core to move outward. After the water flow pressure is greater than the set value, the water flow pressure overcomes the elastic force to push the valve core to move outward and open the pressure regulating port.
  • the pressure regulating port is connected to the water diversion channel, and the end of the water diversion channel is connected to the water outlet of the automatic dispensing device.
  • a pressure regulating chamber is provided on the water supply flow channel, and a pressure regulating port is provided on the pressure regulating chamber.
  • the valve plate covers the pressure regulating opening inside the pressure regulating cavity, and the valve plate correspondingly closes the pressure regulating opening by the water pressure in the chamber;
  • the valve core corresponds to the opening of the valve plate covering the outside of the pressure regulating chamber, and the valve core is opened by the water pressure in the chamber, or has a tendency to open the opening.
  • the upper and lower sides of the pressure regulating chamber in the vertical direction are respectively provided with an inlet and a pressure regulating port, one side wall of the pressure regulating chamber is provided with an outlet connected to the suction structure, and the valve plate moves upward against gravity by the pressure of the water flowing into the chamber To close the pressure regulating port; preferably, the inlet and the pressure regulating port are arranged coaxially.
  • valve plate is arranged opposite to the inlet, so that when the water supply is stopped in the water supply flow channel and a negative pressure is generated in the pressure regulating chamber, the valve plate is moved downward by gravity to seal and cover the water inlet.
  • the present invention also provides a washing machine, characterized in that it is equipped with any one of the above-mentioned automatic injection devices, and the water outlet of the automatic injection device is connected with the washing drum to follow the additives drawn from the liquid storage box through the water flow in the water supply channel.
  • the influent water stream of the washing machine is sent into the washing tub.
  • the present invention can also specifically adopt the following technical solutions:
  • An automatic additive dispensing device includes: a water supply channel, which can deliver water to a suction structure; a liquid storage box, which contains additives; and a suction structure, which can generate negative pressure on the water flowing through the water
  • the additive in the liquid box is extracted and delivered to the water outlet along with the water flow; the pressure regulating device is arranged on the water supply channel to regulate the pressure of the water flowing through, so as to divert the water flowing to the suction structure when the pressure of the water supply flow is too high.
  • a pressure regulating cavity is provided on the water supply flow channel, and a pressure regulating port is provided on the pressure regulating cavity.
  • the pressure regulating device is arranged at the pressure regulating port to make the pressure regulating device act on the water flow pressure after the water supply pressure is greater than the set value. Open the pressure regulating port downward.
  • the pressure regulating device includes a valve core installed at the pressure regulating port via an elastic structure.
  • the spool is subjected to the elastic force of the elastic structure to seal the pressure regulating port and overcome the elastic force and push when the pressure of the water flowing through the pressure regulating chamber is greater than the set value.
  • the spool opens the pressure regulating port.
  • valve core is arranged at the pressure regulating port outside the pressure regulating chamber, and the elastic structure provides the valve core with an elastic force from the outside of the pressure regulating chamber to the inside direction, so that the valve core corresponds to the sealing pressure regulating port; the water flowing through the pressure regulating chamber Apply pressure to the valve core to move outward. After the water flow pressure is greater than the set value, the water flow pressure overcomes the elastic force to push the valve core to move outward and open the pressure regulating port.
  • the pressure regulating port is connected to the water diversion channel, and the end of the water diversion channel is connected to the water outlet of the automatic dispensing device.
  • the pressure regulating device includes a valve plate, which can telescopically move relative to the pressure regulating port as the pressure in the water supply flow channel changes, so that the valve plate correspondingly seals the pressure regulating port under the pressure of the water flowing through the water supply flow channel. , When negative pressure is generated in the water supply channel, the valve plate opens the pressure regulating port by gravity.
  • valve plate is provided with an opening communicating with the inside and outside of the water supply flow channel, and the valve core is arranged at the opening, and the valve core is pushed by the elastic structure to seal the opening correspondingly.
  • valve core is correspondingly arranged at the opening of the valve plate on the outside of the water supply flow channel; a bracket passing through the pressure regulating port extends toward the outside of the water supply flow channel, and a compressed spring is arranged between the bracket and the valve plate, and the two ends of the spring are respectively Connect with the bracket and the valve core.
  • the valve plate is provided with a bracket passing through the pressure regulating port toward the outside of the water supply flow channel, the upper end of the bracket is provided with an end cover with a hollow hole, the lower end is connected with the valve plate, and the spring is clamped between the end cover and the valve plate in a compressed state In between, the two ends of the spring are respectively connected with the valve plate and the end cover, so that the valve plate is restricted to the pressure regulating port under the action of the bracket, and can only produce telescopic movement along the pressure regulating port axial direction.
  • the outer periphery of the valve plate protrudes from the pressure regulating port, so that when the valve plate is under water pressure to seal the pressure regulating port, the valve plate and the inner wall of the water supply flow channel are in sealing contact, and the connecting surface of the valve plate and the water supply flow channel is provided At least one sealing ring; preferably, a sealing ring made of elastic material is wrapped around the outer periphery of the valve disc.
  • the present invention also provides a washing machine, which is equipped with any one of the above-mentioned automatic dispensing devices, and the water outlet of the automatic dispensing device is connected with the washing drum, so that the additives drawn from the liquid storage box through the water flow in the water supply channel are fed into the washing machine.
  • the water stream is sent into the washing tub.
  • the present invention can also specifically adopt the following technical solutions:
  • An automatic dispensing device includes: a water box, a pressure regulating cavity is provided on the water box, an inlet connected to a water inlet pipe and an outlet connected to a suction structure are arranged on the pressure regulating cavity, and the top of the pressure regulating cavity is also provided with an external Connected pressure regulating port, the pressure regulating chamber is provided with a valve plate that can move up and down vertically to correspondingly close or open the pressure regulating port under the action of the pressure in the chamber; the valve plate is provided with an opening, and the opening is provided with Sealed valve core, the valve core is installed on the valve plate via an elastic structure to push the valve core and open the opening when the water flow pressure in the water supply channel is too high.
  • the outlet is arranged on one side of the pressure regulating chamber, and the outlet is connected with the small-diameter inlet end of the venturi tube forming the suction structure; the inlet is arranged at the bottom of the pressure regulating chamber; the water inlet of the pressure regulating chamber is coaxial with the pressure regulating port Set up.
  • the top wall of the pressure regulating chamber is provided with a through sleeve, and the hollow passage of the sleeve constitutes a pressure regulating port; the valve plate is correspondingly covered at the lower end of the sleeve, and the valve plate is connected with a limiting structure inserted into the sleeve to The valve plate is moved in the vertical direction under the combined action of gravity and water pressure; preferably, the limit structure includes a vertically extending bracket, the outer wall of the bracket contacts the inner wall of the sleeve in a corresponding limit, and the lower end of the bracket is in contact with the valve The plates are fixedly connected, and the upper end of the bracket is equipped with an end cover; the height of the bracket is not greater than the height of the sleeve and not less than the height difference between the bottom end of the sleeve and the inlet of the pressure regulating chamber; preferably, the end cover is provided with a Hollow holes set on both sides.
  • the opening is provided at the center of the valve plate, the valve core passes through the opening in a columnar shape, the upper end of the cylindrical valve core is provided with a ring of protrusions protruding outward, and the outer circumference of the protrusion exceeds the opening to make the cylindrical valve core Under the action of gravity, the corresponding sealing opening from top to bottom.
  • the bottom of the pressure regulating chamber is provided with a downwardly recessed groove, and the open shape of the groove is arranged opposite to the valve plate, so that when the valve plate falls to the bottom of the pressure regulating chamber by gravity and/or negative pressure, the valve
  • the lower side of the plate is in sealing contact with the open outer periphery of the groove of the pressure regulating cavity to close the inlet; preferably, the lower end of the cylindrical valve core protruding from the valve plate corresponds to the inlet of the pressure regulating cavity, so that the valve plate is subject to gravity and/ Or when the negative pressure drops to the bottom of the pressure regulating chamber, the lower end of the cylindrical valve core and the inlet are sealed and inserted.
  • the inlet of the pressure regulating chamber is arranged between the sleeve and the side wall of the pressure regulating chamber, and the outer circumference of the valve plate is larger than the circumference of the lower end of the sleeve and smaller than the circumference of the inner side wall of the pressure regulating chamber, so that the cavity flowing from the inlet The water flows from the gap between the sleeve and the pressure regulating chamber wall to the outlet.
  • the elastic structure is a vertically extending spring, and the spring is compressed and installed between the end cover of the support and the valve core, and both ends of the spring are connected to the end cover and the valve core respectively;
  • the support includes a plurality of vertical An extended connecting rib, the upper end of the connecting rib is fixedly connected to the end cap, and the lower end of the connecting rib is fixedly connected to the valve plate, and there are hollow areas through which the water flow passes between adjacent connecting ribs and/or on the connecting ribs; preferably, Each connecting rib is arranged along the cylindrical surface which is attached to the inner wall of the sleeve, and the spring is arranged in the area surrounded by each connecting rib.
  • the water box includes a top cover that is buckled on the top, and the top cover also covers the top of the buckled pressure regulating cavity, and the pressure regulating cavity is integrally formed with the water box or the top cover;
  • There is a water diversion channel the pressure regulating port on the top of the pressure regulating cavity is connected with the water diversion channel, and the water diversion channel extends to the outlet of the water box or the washing cylinder, so that the pressure regulating port is directly connected with the outside atmosphere.
  • At least one sealing ring is provided at the interface between the valve plate and the pressure regulating port, at least one sealing ring is provided at the interface between the valve plate and the inlet of the pressure regulating chamber, and the interface between the valve plate and the valve core is provided At least one sealing ring; preferably, the outer circumference of the valve disc is wrapped with a layer of sealing gaskets made of elastic material covering the upper and lower sides; the middle outer circumference of the cylindrical valve core is sleeved with at least one sealing ring made of elastic material; Preferably, a ring of convex ribs protruding upward is provided on the bottom wall of the pressure regulating chamber, and the convex ribs are arranged coaxially and equal to the sealing gasket provided on the valve disc.
  • the present invention also provides a washing machine, which is equipped with any one of the above-mentioned automatic dispensing devices, and the water outlet of the automatic dispensing device is connected with the washing tub, so as to pump the additives from the liquid storage box to the water box through the inlet water flow with the washing machine The incoming water stream is sent into the washing tub.
  • the water inlet of the washing and care additive automatic feeding device provided by the present invention is equipped with a pressure regulating device to automatically adjust the pressure of the inlet water flow, and realize the automatic opening of the water supply diversion when the pressure of the water supply flow is too high, thereby achieving the The purpose of automatically adjusting the pressure of the inlet water flow and adjusting the water pressure at the inlet end of the suction structure.
  • the automatic injection device for detergent additives provided by the present invention is equipped with an anti-sucking device that automatically adjusts the opening and closing of the vent hole according to the pressure in the pipeline, so as to adjust the pressure in the pipeline accordingly and avoid negative pressure in the pipeline When the situation occurs, the purpose of the anti-backflow function is achieved.
  • the automatic injection device for detergent additives provided by the present invention is equipped with an anti-back suction device that automatically lifts and shifts with the pressure in the pipeline to achieve the effect of automatically controlling the opening and closing of the vent, thereby realizing the normal operation of the automatic injection device
  • the present invention has a simple structure and significant effects, which indicates the promotion and use.
  • FIG. 1 is a schematic diagram of the connection relationship of the automatic dispensing device in Embodiment 1 of the present invention.
  • FIG. 2 is a schematic diagram of the connection relationship of the automatic dispensing device in Embodiments 2 and 3 of the present invention.
  • Figure 3 is a schematic diagram of the structure of an automatic dispensing device in an embodiment of the present invention.
  • Fig. 4 is a schematic top view of the structure of the automatic dispensing device in the embodiment of the present invention.
  • Fig. 5 is a schematic diagram of the C-C cross-sectional structure of Fig. 4 in the embodiment of the present invention.
  • Fig. 6 is a schematic diagram of the D-D cross-sectional structure of Fig. 4 in the embodiment of the present invention.
  • FIG. 7 is a schematic diagram of an enlarged structure at A of FIG. 6 in an embodiment of the present invention.
  • Figure 8 is a schematic diagram of the installation structure of the pressure regulating device of the automatic dispensing device in the embodiment of the present invention.
  • Fig. 9 is a schematic diagram of the explosive structure of the pressure regulating device of Fig. 6 in an embodiment of the present invention.
  • the main components in the picture are: 100—water supply channel, 200—liquid storage box, 300—washing drum, 400—suction structure, 500—pressure regulating chamber, 600—water tank, 1—inlet, 2—outlet, 3— Pressure regulating port, 4—spool, 5—elastic structure, 6—valve plate, 7—opening, 8—bracket, 9—end cap, 10—water distribution channel, 11—sleeve, 12—seal, 13— Sealing ring, 14—groove, 15—raised rib, 50—spring.
  • an automatic additive injection device which includes: a water supply flow channel 100 that can deliver influent water to the suction structure 400.
  • the liquid storage box 200 contains additives, and the additives can be any existing liquid detergent, softener, fragrance, disinfectant, etc.
  • the suction structure 400 can generate negative pressure for the water flowing in the water supply channel 100 to extract the additives in the liquid storage box 200 and transport them to the water outlet along with the water flow; the suction structure 400 can be any existing A device that can generate negative pressure to pump additives into the water stream, such as a suction pump, a venturi, etc.
  • the pressure regulating device is arranged on the water supply flow channel 100 to regulate the pressure of the water flowing through, so as to divert the water flowing to the suction structure 400 when the pressure of the water supply is too high.
  • the water inlet of the washing and care additive automatic feeding device provided by the present invention is provided with a pressure regulating device to automatically adjust the pressure of the inlet water flow, and realize the automatic opening of the water supply split when the pressure of the water supply flow is too high, thereby achieving the
  • the purpose of the water flow is to automatically adjust the pressure and adjust the water pressure at the water inlet of the suction structure.
  • a pressure regulating cavity 500 is provided on the water supply flow channel 100, and a pressure regulating port 3 is provided on the top of the pressure regulating cavity 500.
  • the pressure regulating device can cover and close the pressure regulating device under the action of the water flow pressure. At port 3, after the water supply flow pressure is greater than the set value, the pressure regulating device will open the pressure regulating port 3 under the action of the water flow pressure.
  • the pressure regulating device includes a valve core 4 installed at the pressure regulating port 3 through an elastic structure 5, and the valve core 4 is acted by the elastic force of the elastic structure 5 to seal the pressure regulating port 3 and flow through the pressure regulating port 3.
  • the elastic force is overcome and the valve core 4 is pushed to open the pressure regulating port 3.
  • the valve core is arranged at the pressure regulating port 3 outside the pressure regulating chamber 500, and the elastic structure 4 provides an elastic force from the outside of the pressure regulating chamber 500 to the inside of the valve core 4, so that the valve core 4 corresponds to the sealed pressure regulating port 3;
  • the water flowing through the pressure regulating chamber 500 exerts outward moving pressure on the valve core 4, after the water flow pressure is greater than the set value, the water flow pressure overcomes the elastic force to push the valve core 4 outward to open the pressure regulating port 3.
  • the pressure regulating port 3 is in communication with the water diversion channel 10, and the end of the water diversion channel 10 is connected to the water outlet of the automatic additive injection device, so that the divided inlet water bypasses the suction structure 400 and directly leads to the outlet
  • the nozzle avoids the occurrence of excessive impact on the suction structure 400 and rupture of the flow channel.
  • This embodiment is based on the above-mentioned embodiment 1, and also has the following differences:
  • the pressure regulating device as a whole is installed in the pressure regulating chamber 500 to move up and down vertically, so as to be installed in the water supply flow channel 100 flows into the pressure regulating cavity 500 under the action of the water pressure, overcomes its own gravity to push the pressure regulating device as a whole to rise until the corresponding closed pressure regulating/3; and an opening 7 connecting the inside and outside of the chamber is provided on the pressure regulating device, the valve core 4 is installed at the opening 7, and the valve core 4 is sealed by the elastic force of the elastic structure 5, and when the pressure of the water flowing through the pressure regulating chamber 500 is greater than the set value, it overcomes the elastic force and pushes the valve core 4 to open the opening 7.
  • the pressure regulating device includes a valve plate 6 arranged horizontally.
  • the valve plate 6 can relatively move up and down as the pressure of the water flowing into the pressure regulating chamber 500 of the water supply channel 100 changes, so as to move up and down in the water supply channel 100.
  • the valve plate 6 correspondingly seals the pressure regulating port.
  • the valve plate 6 opens the pressure regulating port 3 by gravity.
  • the valve plate 6 is provided with an opening 7 that penetrates the upper and lower sides and communicates with the inside and outside of the pressure regulating chamber 500.
  • the valve core 4 is provided at the opening 7, and is pushed by the elastic structure 5 to make the valve core corresponding to the sealing opening 7. .
  • the valve core 4 is arranged at the opening 7 on the upper side of the valve plate 6, and the elastic structure 5 provides the valve core 4 with an elastic force from top to bottom toward the inside of the pressure regulating chamber 500, so that the valve core 4 Corresponding to the opening 7 of the sealing valve plate 6; the water flowing through the pressure regulating chamber 500 exerts an outward moving pressure on the valve core 4.
  • the water pressure overcomes the elastic force and pushes the valve core 4 to move outward , Open the opening 7, and then open the pressure regulating port 3, so that the large flow and high pressure of the water in the water supply flow channel 100 can flow out through the opening 7 and the pressure regulating port 3 to achieve the purpose of water flow
  • the valve plate 6 is provided with a limiting structure corresponding to the pressure regulating port 3 to ensure that the valve plate 6 can only move up and down under the action of its own gravity and water pressure.
  • the limiting structure is specifically as follows: the valve plate 6 is connected to a bracket 8 extending toward the outside of the pressure regulating chamber 500, and a compressed spring 50 is arranged between the bracket 8 and the valve plate 6, and two of the spring 50 The ends are connected to the bracket 8 and the valve core 4 respectively.
  • the valve plate 6 is provided with a bracket 8 passing through the pressure regulating port 3 toward the outside of the water supply flow channel 100, and the outgoing end of the bracket 8 is provided with an end cover 9 with a hollow hole, and the spring 50 is in a compressed state.
  • the outer circumference of the valve plate 6 protrudes from the pressure regulating port 3, so that when the valve plate 6 is under 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 the valve plate 6 and At least one sealing ring is provided at the connecting surface of the water supply channel 100; preferably, a sealing ring made of elastic material is wrapped around the outer circumference of the valve plate 6.
  • the outer periphery of the valve core 4 is covered with a sealing ring, so that when the valve core 4 and the opening 7 of the valve plate 6 are in sealing contact, the sealing ring provided on the valve core 4 is positioned where the valve core 4 and the valve plate 6 are in contact. At the junction to ensure the tightness of the opening 7 of the valve plate 6.
  • an automatic additive injection device which includes: a water supply flow channel 100 that can deliver influent water to the suction structure 400.
  • the liquid storage box 200 contains additives, and the additives can be any existing liquid detergent, softener, fragrance, disinfectant, etc.
  • the suction structure 400 can generate negative pressure for the water flowing in the water supply channel 100 to extract the additives in the liquid storage box 200 and transport them to the water outlet along with the water flow; the suction structure 400 can be any existing A device that can generate negative pressure to pump additives into the water stream, such as a suction pump, a venturi, etc.
  • the anti-suckback device is located at the pressure regulating port 3 of the water supply channel 100; when the water supply channel 100 enters water, the anti-suckback device is controlled to close the pressure regulating port 3 under the action of the pressure of the flowing water; in the water supply channel 100 When negative pressure is generated inside, the anti-suction device is controlled to open the pressure regulating port 3 and adjust the negative pressure in the water supply flow channel 100.
  • the automatic injection device for cleaning additives provided by the present invention is provided with an anti-back suction device that automatically adjusts the opening and closing of the vent hole according to the pressure in the pipeline, so as to adjust the pressure in the pipeline accordingly and avoid the negative pressure in the pipeline. Occurs, thereby achieving the purpose of the anti-backflow function.
  • the automatic injection device for washing and care additives provided by the present invention is provided with an anti-back suction device that automatically lifts and shifts with the pressure in the pipeline to achieve the effect of automatically controlling the opening and closing of the vent, thereby realizing the normal operation of the automatic injection device The purpose of using water pressure to close the pressure regulating port, generating negative pressure and opening the pressure regulating port under its own weight when the water is stopped.
  • the anti-suckback device includes a valve plate 6 corresponding to the pressure regulating port 3 covering the inner side of the water supply flow channel 100.
  • the outer circumference of the valve plate 6 protrudes from the pressure regulating port 3, so that when the valve plate 6 is under 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 the valve plate 6 is in contact with the water supply flow channel 100.
  • At least one sealing ring is provided at the connecting surface.
  • the upper and lower sides of the pressure regulating chamber 500 in the vertical direction are respectively provided with an inlet 1 and a pressure regulating port 3, and one side wall of the pressure regulating chamber 500 is provided with an outlet 2 connected to the suction structure 400, and the valve plate 6 is subjected to inflow
  • the water flow pressure in the chamber overcomes gravity and moves upward to close the pressure regulating port 3; preferably, the inlet 1 and the pressure regulating port 3 are arranged coaxially.
  • the lower side of the valve plate 6 is arranged opposite to the inlet 1, so that when the water supply is stopped in the water supply channel 100 and negative pressure is generated in the pressure regulating chamber 500, the valve plate 6 is moved downward by gravity to seal and cover Import 1.
  • valve sheet 6 is provided with a bracket 8 that passes through the pressure regulating port 3 toward the outside of the water supply flow channel 100.
  • the upper end of the bracket 8 passes through the pressure regulating port 3 and is provided with an end cover 9 so that the valve sheet 6 is
  • the support 8 can only produce telescopic movement along the axial direction of the pressure regulating port 3 under the restriction.
  • valve plate 6 is provided with an opening 7, and a valve core 4 is installed at the opening 7, and the valve core 4 is installed at the opening 7 through the elastic structure 5, and the valve core 6 is sealed and regulated by the elastic force of the elastic structure 5 Port 3.
  • the pressure of the water flowing through the pressure regulating chamber 500 is greater than the set value, it overcomes the elastic force and pushes the valve core 4 to open the pressure regulating port 3.
  • the valve core 4 is provided at the pressure regulating port 3 outside the pressure regulating chamber 500, and the elastic structure 5 provides the valve core 4 with an elastic force from the outside of the pressure regulating chamber 500 to the inside, so that the valve core 4 corresponds to the sealing and regulating pressure Port 3; the water flowing through the pressure regulating chamber 500 exerts outward moving pressure on the valve core 4, after the water flow pressure is greater than the set value, the water flow pressure overcomes the elastic force to push the valve core 4 outward to open the pressure regulating port 3 .
  • the pressure regulating port 3 is connected to the water distribution channel 10, and the end of the water distribution channel 10 is connected to the water outlet of the automatic injection device.
  • the water outlet is inside the water box of the automatic injection device.
  • the pressure is atmospheric pressure or set equal to the pressure in the washing tub 300 of the washing machine.
  • the water supply flow channel 100 is provided with a pressure regulating cavity 500, and the pressure regulating cavity 500 is provided with a pressure regulating port 3.
  • the valve plate 6 corresponds to the pressure regulating port 3 covering the inner side of the pressure regulating cavity 500, and the valve plate 6
  • the pressure regulating port 3 is correspondingly closed by the water pressure in the chamber;
  • the valve core 4 corresponds to the opening 7 of the valve plate 6 covering the outside of the pressure regulating chamber 500.
  • the valve core 4 is opened by the water pressure in the chamber to open the opening 7, or has an opening opening 7 trends.
  • this embodiment introduces an automatic dispensing device, including: a water box 600, the water box 600 is provided with a pressure regulating cavity 500, and the pressure regulating cavity 500 is provided with an inlet connected to a water inlet pipe 1.
  • the outlet 2 connected to the suction structure 400, the top of the pressure regulating cavity 500 is also provided with a pressure regulating port 3 that communicates with the outside, and the pressure regulating cavity 500 is provided with a valve plate 6 that can move up and down vertically, so as to
  • the pressure regulating port 3 is correspondingly closed or opened under the action of the indoor pressure; the valve plate 6 is provided with an opening 7, and the opening 7 is provided with a valve core 4 to seal it.
  • the valve core 4 is installed on the valve plate 6 through an elastic structure 5. When the water flow pressure in the water supply channel 100 is too high, the valve core 4 is pushed to open the opening 7.
  • the outlet 2 is provided on one side of the pressure regulating chamber 500, and the outlet 2 is connected with the small-diameter inlet end of the venturi tube constituting the suction structure 400; the inlet 1 is provided at the bottom of the pressure regulating chamber 500; The water inlet of 500 and the pressure regulating port 3 are arranged coaxially.
  • the top wall of the pressure regulating chamber 500 is provided with a through sleeve 11, the hollow passage of the sleeve 11 constitutes the pressure regulating port 3; the valve plate 6 is correspondingly covered and arranged on the lower end of the sleeve 11, and the valve plate 6 is connected with the sleeve
  • the position-limiting structure in which the barrel 11 is inserted to make the valve plate 6 telescopically move in the vertical direction under the combined action of gravity and water flow pressure.
  • the limiting structure includes a vertically extending bracket 8.
  • the outer wall of the bracket 8 is in contact with the inner wall of the sleeve 11 in a corresponding limiting position, the lower end of the bracket 8 is fixedly connected with the valve plate 6, and the upper end of the bracket 8 is installed with an end.
  • Cover 9; the height of the bracket 8 is not greater than the height of the sleeve 11, not less than the height difference between the bottom end of the sleeve 11 and the inlet of the pressure regulating chamber 500.
  • the end cover 9 is provided with a plurality of hollow holes that penetrate the upper and lower sides.
  • the end cap 9 has an annular rib covering the outer circumferential wheel buckle and a plurality of straight ribs arranged at intervals along the radial direction.
  • the inner ends of the straight ribs meet and are fixed at the center of the annular rib, the outer end and the inner circumference of the annular rib Phase fixed.
  • the gaps between the straight ribs form hollow holes penetrating the upper and lower sides.
  • the opening 7 is provided at the center of the valve plate 6, and the valve core 4 passes through the opening 7 in a columnar shape.
  • the upper end of the cylindrical valve core 4 is provided with a ring of protrusions protruding outward, and the outer periphery of the protrusions Beyond the opening 7, the cylindrical valve core 4 will seal the opening 7 from top to bottom under the action of gravity.
  • the bottom of the pressure regulating chamber 500 is provided with a downwardly recessed groove 14, and the open shape of the groove 14 is arranged opposite to the valve plate 6, so that the valve plate 6 falls 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 chamber 500, closing the inlet.
  • a ring of convex ribs 15 protruding upward is provided on the bottom wall of the pressure regulating chamber 500, and the convex ribs 15 are arranged coaxially and equal to the sealing gasket 12 provided on the valve plate 4, so that the valve plate is When the negative pressure and/or the dead weight drop to the bottom of the pressure regulating chamber, the sealing gasket 12 correspondingly closes the inlet 1.
  • the cylindrical valve core 4 protrudes from the lower end of the valve plate 6 corresponding to the inlet 1 of the pressure regulating chamber 500, so that when the valve plate falls to the bottom of the pressure regulating chamber 500 under the action of gravity and/or negative pressure, The lower end of the cylindrical valve core 4 is sealed and plugged in corresponding to the inlet 1.
  • the lower end of the cylindrical valve core 4 is in a smooth hemispherical shape, and the outer peripheral side of the cylindrical valve core 4 is in contact with the inner wall of the pipeline at the lower end inlet 1 of the pressure regulating chamber 500 to correspond to the lower end of the cylindrical valve core 4 After the inlet 1 is inserted, the two are in sealed contact, so that the cylindrical valve core 4 seals the inlet 1 of the pressure regulating chamber 500 after the valve plate 6 is lowered as a whole.
  • the inlet 1 of the pressure regulating chamber 500 is provided between the sleeve and the side wall of the pressure regulating chamber 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 side wall of the pressure regulating chamber 3. So that the water flow in the chamber from the inlet flows from the gap between the sleeve 11 and the wall of the pressure regulating chamber 500 to the outlet 2.
  • the elastic structure 5 is a vertically extending spring 50.
  • the spring 50 is compressed and installed between the bracket end cover 9 and the valve core 4, and both ends of the spring 50 are connected to the end cover 9 and the valve core 4 respectively.
  • the bracket 8 includes a plurality of vertically extending connecting ribs.
  • the upper ends of the connecting ribs are fixedly connected to the end cap 9, the lower end is fixedly connected to the valve plate 6, and the adjacent connecting ribs and/or the connecting ribs
  • the connecting ribs are arranged along the cylindrical surface that is attached to the inner wall of the sleeve 11, and the spring 50 is arranged in the area surrounded by the connecting ribs.
  • the water box 600 of the automatic dispensing device includes a top cover 700 that is fastened to the top.
  • the top cover 700 protrudes downward and is provided with a pressure regulating cavity 500.
  • the box 600 is integrally formed; the upper side of the top cover 700 is provided with a water distribution channel 10, the pressure regulating port on the top of the pressure regulating cavity 500 is connected with the water distribution channel 10, and the water distribution channel 10 extends to the outlet 2 of the water box 600, Or in the washing tub 300, the inlet water flow out of the partial pressure flows directly into the water box 600 to achieve the purpose of automatic pressure adjustment of the inlet water flow; at the same time, the pressure regulating port 3 is directly connected with the external atmosphere to adjust the water supply The negative pressure in the runner 100.
  • At least one sealing ring is provided at the interface between the valve plate 6 and the pressure regulating port 3, and at least one sealing ring is provided at the interface between the valve plate 6 and the inlet 1 of the pressure regulating chamber 500.
  • At least one sealing ring 13 is provided at the interface between 6 and the valve core 4.
  • the outer periphery of the valve plate 6 is wrapped with a layer of sealing gaskets 12 made of elastic material covering the upper and lower sides; the central outer periphery of the cylindrical valve core 4 is sleeved with at least one ring 13 made of elastic material.
  • a ring of convex ribs 15 protruding upward is provided on the bottom wall of the pressure regulating chamber 500, and the convex ribs 15 are coaxially and equally large corresponding to the gasket 12 provided on the valve plate 4.
  • This embodiment also provides a washing machine equipped with the automatic dispensing device described in any one of the above embodiments 1 to 4, and the water outlet of the automatic dispensing device is connected to the washing tub 300 to pass the liquid storage box 200 into The additives pumped to the water box 600 by the water stream are sent into the washing tub 300 along with the washing machine water stream.

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Abstract

一种添加剂自动投放装置，包括：供水流道（100）；贮液盒（200），其内含有添加剂；抽吸结构（400），能够将贮液盒（200）内的添加剂抽至供水流道（100）、并随水流输送至出水口；防倒吸装置，设于供水流道（100）的调压口（3）处；在供水流道（100）进水时，受流经水流压力作用而控制防倒吸装置闭合调压口（3）；在供水流道内产生负压时，控制防倒吸装置打开调压口（3）、调节供水流道（100）内压力。该添加剂自动投放装置中设有随管路内压力而自动调整通气孔开闭的调压装置，以对管路内压力进行相应调整，避免管路内存在负压情况的发生，进而达到了防倒流功能的目的。

Description

一种添加剂自动投放装置及洗衣机 技术领域
本发明涉及衣物处理装置技术领域，具体地说，涉及一种添加剂自动投放装置及洗衣机。
背景技术
随着消费水平的增长，消费者对日常生活的质量有了更高的要求，因此产生了对智能家电的需求，就目前市场上销售的洗衣机产品很多都采用自动投放系统，可智能添加洗涤剂和柔顺剂，用户只需要一次性添加大量洗护剂，之后免却了每次使用时都要添加的麻烦。
但是同时这也带来一些问题：
自动投放装置的水路上普遍安装有利用负压将洗护添加剂抽出的抽吸装置，例如：文丘里管、抽吸泵等。在抽吸装置的实际使用过程中对供水流量有一定的要求。当供水水流流量过大、水压过大的时候，水流通过抽吸结构之前的管路将产生很大的封闭压力。封闭压力对投放装置密封性具有很大风险：在流量过大时，即使通过种种措施解决了水路的密封措施，但依然存在管路泄露、爆管。开裂等风险。
同时，存在不同流道段处的水压差异过大、容易在流道内形成负压，进而影响洗护添加剂的正常抽出、和流道内水流顺畅性。尤其是，在抽吸结构采用文丘里管时，因为文丘里管的进水端为最小直径管路，极容易产生封闭压力，导致文丘里管的进水水流达不到使用要求、而无法抽出洗护添加剂。
另外，洗衣机在世界各地的标准中都具有防倒吸要求，而自动投放装置的防倒吸功能同样必不可少。为了实现上述功能，可以通过在自动投放装置的流道中加装单项逆止阀，或者设置空气间隙、即将管路与大气连通来实现。但是，现有的自动投放装置中的水路中并没有较好的结构形式可实现进水流道的防倒吸功能。
有鉴于此，特提出本发明。
发明内容
本发明旨在提供一种添加剂自动投放装置及应用该装置的洗衣机，实现对供水 水流自动调压分流的目的；本发明的另一目的在于提供一种添加剂自动投放装置，以实现供水水流防倒吸功能的目的。
为达到上述目的，本发明具体采用如下技术方案：
一种添加剂自动投放装置，包括：供水流道；贮液盒，其内含有添加剂；抽吸结构，能够将贮液盒内的添加剂抽至供水流道、并随水流输送至出水口；防倒吸装置，设于供水流道的调压口处；在供水流道进水时，受流经水流压力作用而控制防倒吸装置闭合调压口；在供水流道内产生负压时，控制防倒吸装置打开调压口、调节供水流道内压力。
进一步，防倒吸装置包括一阀片，阀片对应覆盖于供水流道内侧的调压口处；优选的，阀片外周凸出于调压口设置，以在阀片受水压而密封调压口时阀片与供水流道内壁相密封接触，阀片与供水流道的相接面处设有至少一圈密封圈。
进一步，阀片朝向供水流道外侧设有穿过调压口的支架，支架的传出端设有端盖，弹簧结构夹持于端盖与阀芯之间，以使阀片在支架的限制作用下仅能产生沿调压口轴向的伸缩移动。
进一步，阀片上设有开口，开口处安装有阀芯，阀芯经弹力结构安装于开口处，阀芯受弹力结构的弹力作用对应密封调压口、在流经调压腔水流压力大于设定值时克服弹力并推动阀芯打开调压口，将供水流道内水流进行调压分流。
进一步，阀芯设于调压腔外侧的调压口，弹力结构对阀芯提供一自调压腔外部向内部方向的弹力，使阀芯对应密封调压口；调压腔内流经的水流对阀芯施加向外移动的压力，在水流压力大于设定值后，水流压力克服弹力而推动阀芯向外移动、打开调压口。
进一步，调压口与分水流道相连通，分水流道的端部通至自动投放装置的出水口。
进一步，供水流道上设有调压腔，调压腔上设有调压口，阀片对应覆盖于调压腔内侧的调压口处，阀片受腔室内水压而对应封闭调压口；阀芯对应覆盖于调压腔外侧的阀片开口处，阀芯受腔室内水压而打开开口、或具有打开开口的趋势。
进一步，调压腔竖直方向的上下侧分别设置进口和调压口，调压腔的一侧壁上设置与抽吸结构相连的出口，阀片受流入腔室内的水流压力而克服重力向上移动至闭合调压口；优选的，进口与调压口同轴设置。
进一步，阀片的下侧与进口相对设置，以在供水流道中停止供水、调压腔内产生负压时，阀片受重力作用而向下移动至密封覆盖进水口。
本发明还提供了一种洗衣机，其特征在于，安装有上述任一所述的自动投放装置，自动投放装置的出水口与洗涤筒相连，以将贮液盒内经供水流道中水流抽出的添加剂随洗衣机进水水流送入洗涤筒内。
为达到上述目的，本发明还可以具体采用如下技术方案：
一种添加剂自动投放装置，包括：供水流道，可将水输送至抽吸结构；贮液盒，其内含有添加剂；抽吸结构，能够通过对供水流道内流经水流产生负压，将贮液盒内的添加剂抽出并随水流输送至出水口；调压装置，设于供水流道上对流经水流进行调压，以在供水水流压力过大时将流至抽吸结构的水流分流。
进一步，供水流道上设有调压腔，调压腔上设有调压口，调压装置设于调压口处，以在供水水流压力大于设定值后，使调压装置在水流压力作用下打开调压口。
进一步，调压装置包括经弹力结构安装于调压口处的阀芯，阀芯受弹力结构的弹力作用对应密封调压口、在流经调压腔水流压力大于设定值时克服弹力并推动阀芯打开调压口。
进一步，阀芯设于调压腔外侧的调压口，弹力结构对阀芯提供一自调压腔外部向内部方向的弹力，使阀芯对应密封调压口；调压腔内流经的水流对阀芯施加向外移动的压力，在水流压力大于设定值后，水流压力克服弹力而推动阀芯向外移动、打开调压口。
进一步，调压口与分水流道相连通，分水流道的端部通至自动投放装置的出水口。
进一步，所述调压装置包括一阀片，阀片随供水流道内压力变化而相对调压口可产生伸缩移动，以在供水流道流经水流的压力推动下使阀片对应密封调压口、在供水流道内产生负压时阀片受重力而打开调压口。
进一步，阀片上设有联通供水流道内外的开口，阀芯设于开口处，并在弹力结构的推动下使阀芯对应密封开口。
进一步，阀芯对应设于供水流道外侧的阀片开口处；朝向供水流道外侧延伸有穿过调压口的支架，支架与阀片之间设有压紧的弹簧，弹簧的两端分别与支架和阀芯相连。
优选的，阀片朝向供水流道外侧设有穿过调压口的支架，支架上端设有具有镂空孔的端盖、下端与阀片相连，弹簧呈压缩状态的夹持于端盖与阀片之间，弹簧两端与阀片和端盖分别相连，以使阀片在支架的作用下限制于调压口处、仅能产生沿调压口轴向的伸缩移动。
进一步，阀片外周凸出于调压口设置，以在阀片受水压而密封调压口时阀片与供水流道内壁相密封接触，阀片与供水流道的相接面处设有至少一圈密封圈；优选的，阀片的外周包裹有一圈由弹性材质构成的密封圈。
本发明还提供了一种洗衣机，其安装有上述任一所述的自动投放装置，自动投放装置的出水口与洗涤筒相连，以将贮液盒内经供水流道中水流抽出的添加剂随洗衣机进水水流送入洗涤筒内。
为达到上述目的，本发明还可以具体采用如下技术方案：
一种自动投放装置，包括：水盒，水盒上设有调压腔，调压腔上设有与进水管相连的进口、与抽吸结构相连的出口，调压腔顶部还设有与外部相连通的调压口，调压腔内设有可上下竖直移动的阀片，以在腔室内压力作用下对应封闭、或打开调压口；阀片上设有开口，开口处设有将其密封的阀芯，阀芯经弹力结构安装于阀片上，以在供水流道中水流压力过大时推动阀芯、打开开口。
进一步，出口设于调压腔的一侧，出口与构成抽吸结构的文丘里管的小口径进口端相连；进口设于调压腔的底部；调压腔的进水与调压口同轴设置。
进一步，调压腔的顶壁设有贯通的套筒，套筒中空通道构成调压口；阀片对应覆盖设于套筒下端，阀片连有与套筒相插接的限位结构，以使阀片在重力及水流压力共同作用下沿竖直方向伸缩移动；优选的，所述的限位结构包括一竖直延伸的支架，支架外壁于套筒内壁对应限位接触，支架下端与阀片相固定连接、支架上端安装有端盖；支架的高度不大于套筒高度、不小于套筒底端与调压腔进口之间的高度差；优选的，端盖上设有多个贯穿上下两侧设置的镂空孔。
进一步，开口设于阀片的中心处，阀芯呈柱状穿过开口，柱状阀芯的上端设有向外凸出的一圈凸出部，凸出部的外周超出于开口，使柱状阀芯在重力作用下、自上向下对应密封开口。
进一步，调压腔的底部设有向下凹陷的凹槽，凹槽的敞口形状与阀片相对设置，以使阀片受重力和/或负压作用而下落至调压腔底部时，阀片下侧与调压腔凹槽敞口外周相密封接触、将进口闭合；优选的，柱状阀芯凸出于阀片的下端与调压腔的进口相对应，以使阀片受重力和/或负压作用而下落至调压腔底部时，柱状阀芯下端与进口相对应密封插接。
进一步，调压腔的进口设于套筒与调压腔侧壁之间，阀片的外周径大于套筒下端周径、小于调压腔内侧壁周径，以使自进口流入的腔室的水流自套筒与调压腔壁之间的间隙流至出口。
进一步，所述弹力结构为竖直延伸的弹簧，弹簧呈压缩的安装于支架端盖与阀芯之间，弹簧的两端分别与端盖和阀芯相连；优选的，支架包括多根竖直延伸的连接筋，连接筋的上端与端盖相固定连接、下端与阀片相固定连接，相邻连接筋之间、和/或连接筋上设有供水流穿过的镂空区域；优选的，各连接筋沿与套筒内壁相贴合的圆筒面设置，弹簧设于各连接筋相围区域内。
进一步，所述水盒包括一扣合于顶部的顶盖，顶盖还对应覆盖扣合调压腔的顶部，所述调压腔与水盒、或顶盖一体成型构成；顶盖上侧设有分水流道，调压腔顶部所设调压口与分水流道相连通，分水流道延伸至水盒出水口处、或洗涤筒内，使调压口与外部大气直接相连通。
进一步，阀片与调压口相接面处设有至少一圈密封圈、阀片与调压腔进口相接面处设有至少一圈密封圈、阀片与阀芯相接面处设有至少一圈密封圈；优选的，阀片的外周包裹有一层由弹性材质构成的、覆盖上下两侧的密封垫；柱状阀芯的中部外周套设有至少一圈由弹性材质构成的密封圈；优选的，调压腔的底壁上设有一圈向上凸出的凸筋，所述凸筋与阀片上所设密封垫相对应同轴等大设置。
本发明还提供了一种洗衣机，其安装有上述任一所述的自动投放装置，自动投放装置的出水口与洗涤筒相连，以将贮液盒内经进水水流抽至水盒的添加剂随洗衣机进水水流送入洗涤筒内。
本发明的有益效果为：
1.本发明提供的洗护添加剂自动投放装置的进水水路上设有调压装置，以对进水水流压力自动调节，实现了在供水水流压力过大时、自动开启供水分流，进而达到对进水水流自动调压、对抽吸结构进水端水压进行适应调整的目的。
2.本发明提供的洗护添加剂自动投放装置中设有随管路内压力而自动调整通气孔开闭的防倒吸装置，以对管路内压力进行相应调整，避免管路内存在负压情况的发生，进而达到了防倒流功能的目的。
3.本发明提供的洗护添加剂自动投放装置中设有随管路内压力而自动升降位移的防倒吸装置，以达到对通气孔开闭自动控制的效果，进而实现了自动投放装置正常进水时利用水压封闭调压口、产生负压及停止进水时在自重作用下相应打开调压口的使用目的。
同时，本发明结构简单，效果显著，示意推广使用。
附图说明
图1为本发明实施例1中自动投放装置的连接关系示意图。
图2为本发明实施例2和3中自动投放装置的连接关系示意图。
图3为本发明实施例中自动投放装置的结构示意图。
图4为本发明实施例中自动投放装置的俯视结构示意图。
图5为本发明实施例中图4的C-C截面结构示意图。
图6为本发明实施例中图4的D-D截面结构示意图。
图7为本发明实施例中图6的A处放大结构示意图。
图8为本发明实施例中自动投放装置的调压装置安装结构示意图。
图9为本发明实施例中图6的调压装置爆炸结构示意图。
图中主要部件为：100—供水流道，200—贮液盒，300—洗涤筒，400—抽吸结构，500—调压腔，600—水盒，1—进口，2—出口，3—调压口，4—阀芯，5—弹力结构，6—阀片，7—开口，8—支架，9—端盖，10—分水流道，11—套筒，12—密封垫，13—密封圈，14—凹槽，15—凸筋，50—弹簧。
具体实施方式
为使本发明解决的技术问题、采用的技术方案和达到的技术效果更加清楚，下面将结合附图对本发明的实施方式作进一步的详细描述。
实施例1
本实施例中，如图1所示，提供了一种添加剂自动投放装置，包括：供水流道100，可将进水输送至抽吸结构400。贮液盒200，其内含有添加剂，所述的添加剂可以为现有的任一液态洗涤剂、柔顺剂、添香剂、消毒剂等。抽吸结构400，能够通过对供水流道100内流经水流产生负压，将贮液盒200内的添加剂抽出并随水流输送至出水口；所述的抽吸结构400可以为现有的任一可产生负压以抽取添加剂至水流中的装置，例如，抽吸泵、文丘里管等。调压装置，设于供水流道100上对流经水流进行调压，以在供水水流压力过大时将流至抽吸结构400的水流分流。
本发明提供的洗护添加剂自动投放装置的进水水路上设有调压装置，以对进水水流压力自动调节，实现了在供水水流压力过大时、自动开启供水分流，进而达到对进水水流自动调压、对抽吸结构进水端水压进行适应调整的目的。
本实施例中，在供水流道100上设有调压腔500，调压腔500顶部设有调压口3，所述调压装置可在水流压力的作用下对应覆盖闭合的设于调压口3处，以在供水水流压力大于设定值后，使调压装置在水流压力作用下打开调压口3。
本实施例中，所述的调压装置包括一经弹力结构5安装于调压口3处的阀芯4，阀芯4受弹力结构5的弹力作用对应密封调压口3、在流经调压腔500水流压力大于设定值时克服弹力并推动阀芯4打开调压口3。
本实施例中，阀芯设于调压腔500外侧的调压口3，弹力结构4对阀芯4提供一自调压腔500外部向内部方向的弹力，使阀芯4对应密封调压口3；调压腔500内流经的水流对阀芯4施加向外移动的压力，在水流压力大于设定值后，水流压力克服弹力而推动阀芯4向外移动、打开调压口3。
本实施例中，调压口3与分水流道10相连通，分水流道10的端部通至添加剂自动投放装置的出水口，以将分流进水绕过抽吸结构400、直接引至出水口，避免对抽吸结构400冲击力过大、造成流道破裂等情况的发生。
实施例2
本实施例基于上述实施例1，还具有如下区别：本实施例中，如图2所示，所述调压装置整体可上下竖直移动的安装于调压腔500内，以在供水流道100流入调压腔500内水压作用下、克服自身重力而推动调压装置整体上升直至对应封闭调压/3；并在调压装置上设置将腔室内外相连通的开口7，所述阀芯4对应安装于开口7处，阀芯4受弹力结构5的弹力作用对应密封开口7、在流经调压腔500水流压力大于设定值时克服弹力并推动阀芯4打开开口7。
本实施例中，所述调压装置包括一水平设置的阀片6，阀片6随供水流道100流入调压腔500内水流压力变化而相对可产生上下伸缩移动，以在供水流道100流经水流的压力推动下使阀片6对应密封调压口、在供水流道100内产生负压时阀片6受重力而打开调压口3。
本实施例中，阀片6上设有贯通上下两侧、联通调压腔500内外的开口7，阀芯4设于开口7处，并在弹力结构5的推动下使阀芯对应密封开口7。本实施例中，所述阀芯4设于阀片6上侧的开口7处，弹力结构5对阀芯4提供一自上向下、朝向调压腔500内部方向的弹力，使阀芯4对应密封阀片6的开口7；调压腔500内流经的水流对阀芯4施加向外移动的压力，在水流压力大于设定值后，水流压力克服弹力而推动阀芯4向外移动、打开开口7，进而使调压口3打开，令供水流道100中大流量、大压力的进水可经开口7和调压口3流出，以实现对进水分流的目的
本实施例中，阀片6设有与调压口3相对应插接的限位结构，以保证阀片6仅能在自身重力与水流压力作用下产生上下竖直放下的位移。本实施例中，所述的限 位结构具体如下：阀片6连接有一朝向调压腔500外侧延伸的支架8，支架8与阀片6之间设有压紧的弹簧50，弹簧50的两端分别与支架8和阀芯4相连。优选的，本实施例中，阀片6朝向供水流道100外侧设有穿过调压口3的支架8，支架8的传出端设有具有镂空孔的端盖9，弹簧50呈压缩状态的夹持于端盖9与阀芯4之间，弹簧50两端分别与阀芯4和端盖9相连，以使阀片6在支架8的作用下限制于调压口3处、仅能产生沿调压口3轴向的伸缩移动，使得调压腔500内的分水水流自开口7、调压口3流出供水流道100，以达到对进水自动调压、分流的目的。
本实施例中，阀片6外周凸出于调压口3设置，以在阀片6受水压而密封调压口3时阀片6与供水流道100内壁相密封接触，阀片6与供水流道100的相接面处设有至少一圈密封圈；优选的，阀片6的外周包裹有一圈由弹性材质构成的密封圈。本实施例中，阀芯4外周套装有一圈密封圈，以在阀芯4与阀片6的开口7相对应密封接触时，阀芯4上所设密封圈处于阀芯4与阀片6相接面处，以保证阀片6的开口7的密封性。
实施例3
本实施例中，如图2所示，提供了一种添加剂自动投放装置，包括：供水流道100，可将进水输送至抽吸结构400。贮液盒200，其内含有添加剂，所述的添加剂可以为现有的任一液态洗涤剂、柔顺剂、添香剂、消毒剂等。抽吸结构400，能够通过对供水流道100内流经水流产生负压，将贮液盒200内的添加剂抽出并随水流输送至出水口；所述的抽吸结构400可以为现有的任一可产生负压以抽取添加剂至水流中的装置，例如，抽吸泵、文丘里管等。防倒吸装置，设于供水流道100的调压口3处；在供水流道100进水时，受流经水流压力作用而控制防倒吸装置闭合调压口3；在供水流道100内产生负压时，控制防倒吸装置打开调压口3、调节供水流道100内负压。
本发明提供的洗护添加剂自动投放装置中设有随管路内压力而自动调整通气孔开闭的防倒吸装置，以对管路内压力进行相应调整，避免管路内存在负压情况的发生，进而达到了防倒流功能的目的。同时，本发明提供的洗护添加剂自动投放装置中设有随管路内压力而自动升降位移的防倒吸装置，以达到对通气孔开闭自动控制的效果，进而实现了自动投放装置正常进水时利用水压封闭调压口、产生负压及停止进水时在自重作用下相应打开调压口的使用目的。
本实施例中，防倒吸装置包括一阀片6，阀片6对应覆盖于供水流道100内侧的 调压口3处。阀片6外周凸出于调压口3设置，以在阀片6受水压而密封调压口3时阀片6与供水流道100内壁相密封接触，阀片6与供水流道100的相接面处设有至少一圈密封圈。
本实施例中，调压腔500竖直方向的上下侧分别设置进口1和调压口3，调压腔500的一侧壁上设置与抽吸结构400相连的出口2，阀片6受流入腔室内的水流压力而克服重力向上移动至闭合调压口3；优选的，进口1与调压口3同轴设置。
本实施例中，阀片6的下侧与进口1相对设置，以在供水流道100中停止供水、调压腔500内产生负压时，阀片6受重力作用而向下移动至密封覆盖进口1。
本实施例中，阀片6朝向供水流道100外侧设有穿过调压口3的支架8，支架8的上端穿出调压口3、并设有端盖9，以使阀片6在支架8的限制作用下仅能产生沿调压口3轴向的伸缩移动。
本实施例中，阀片6上设有开口7，开口7处安装有阀芯4，阀芯4经弹力结构5安装于开口7处，阀芯6受弹力结构5的弹力作用对应密封调压口3、在流经调压腔500水流压力大于设定值时克服弹力并推动阀芯4打开调压口3。
本实施例中，阀芯4设于调压腔500外侧的调压口3，弹力结构5对阀芯4提供一自调压腔500外部向内部方向的弹力，使阀芯4对应密封调压口3；调压腔500内流经的水流对阀芯4施加向外移动的压力，在水流压力大于设定值后，水流压力克服弹力而推动阀芯4向外移动、打开调压口3。
本实施例中，调压口3与分水流道10相连通，分水流道10的端部通至自动投放装置的出水口，出水口处为自动投放装置的水盒内部，该出水口处的压力为大气压、或与洗衣机洗涤筒300内压力相等设置。
本实施例中，供水流道100上设有调压腔500，调压腔500上设有调压口3，阀片6对应覆盖于调压腔500内侧的调压口3处，阀片6受腔室内水压而对应封闭调压口3；阀芯4对应覆盖于调压腔500外侧的阀片6的开口7处，阀芯4受腔室内水压而打开开口7、或具有打开开口7的趋势。
实施例4
如图1至图9所示，本实施例介绍了一种自动投放装置，包括：水盒600，水盒600上设有调压腔500，调压腔500上设有与进水管相连的进口1、与抽吸结构400相连的出口2，调压腔500顶部还设有与外部相连通的调压口3，调压腔500内设有可上下竖直移动的阀片6，以在腔室内压力作用下对应封闭、或打开调压口3；阀片 6上设有开口7，开口7处设有将其密封的阀芯4，阀芯4经弹力结构5安装于阀片6上，以在供水流道100中水流压力过大时推动阀芯4、打开开口7。
本实施例中，出口2设于调压腔500的一侧，出口2与构成抽吸结构400的文丘里管的小口径进口端相连；进口1设于调压腔500的底部；调压腔500的进水与调压口3同轴设置。
本实施例中，调压腔500的顶壁设有贯通的套筒11，套筒11中空通道构成调压口3；阀片6对应覆盖设于套筒11下端，阀片6连有与套筒11相插接的限位结构，以使阀片6在重力及水流压力共同作用下沿竖直方向伸缩移动。
本实施例中，所述的限位结构包括一竖直延伸的支架8，支架8外壁于套筒11内壁对应限位接触，支架8下端与阀片6相固定连接、支架8上端安装有端盖9；支架8的高度不大于套筒11高度、不小于套筒11底端与调压腔500进口之间的高度差。本实施例中，端盖9上设有多个贯穿上下两侧设置的镂空孔。优选的，端盖9具有覆盖外周轮扣的环形筋，和多条沿径向间隔排布的直筋，各直筋的内端相交汇固定于环形筋圆心处、外端与环形筋内周相固定。各直筋之间的间隙构成贯通上下两侧的镂空孔。
本实施例中，开口7设于阀片6的中心处，阀芯4呈柱状穿过开口7，柱状阀芯4的上端设有向外凸出的一圈凸出部，凸出部的外周超出于开口7，使柱状阀芯4在重力作用下、自上向下对应密封开口7。
本实施例中，调压腔500的底部设有向下凹陷的凹槽14，凹槽14的敞口形状与阀片6相对设置，以使阀片6受重力和/或负压作用而下落至调压腔500底部时，阀片6下侧与调压腔500的凹槽14的敞口外周相密封接触、将进口闭合。优选的，调压腔500的底壁上设有一圈向上凸出的凸筋15，所述凸筋15与阀片4上所设密封垫12相对应同轴等大设置，以使阀片受负压、和/或自重下降至调压腔底部时，密封垫12对应封闭进口1。
本实施例中，柱状阀芯4凸出于阀片6的下端与调压腔500的进口1相对应，以使阀片受重力和/或负压作用而下落至调压腔500底部时，柱状阀芯4下端与进口1相对应密封插接。优选的，柱状阀芯4的下端呈平滑的半圆球形，且柱状阀芯4的外周侧与调压腔500下端进口1处的管路内壁相对应贴合接触，以在柱状阀芯4下端对应插入进口1后二者相密封接触，进而实现阀片6整体下落后、柱状阀芯4对调压腔500的进口1进行封闭的目的。
本实施例中，调压腔500的进口1设于套筒与调压腔500侧壁之间，阀片6的 外周径大于套筒11下端周径、小于调压腔3内侧壁周径，以使自进口流入的腔室的水流自套筒11与调压腔500壁之间的间隙流至出口2。
本实施例中，所述弹力结构5为竖直延伸的弹簧50，弹簧50呈压缩的安装于支架端盖9与阀芯4之间，弹簧50的两端分别与端盖9和阀芯4相连。本实施例中，支架8包括多根竖直延伸的连接筋，连接筋的上端与端盖9相固定连接、下端与阀片6相固定连接，相邻连接筋之间、和/或连接筋上设有供水流穿过的镂空区域。优选的，各连接筋沿与套筒11内壁相贴合的圆筒面设置，弹簧50设于各连接筋相围区域内。
本实施例中，自动投放装置的水盒600包括一扣合于顶部的顶盖700，顶盖700向下凸出设有调压腔500，所述调压腔500与顶盖700、或水盒600一体成型构成；顶盖700上侧设有分水流道10，调压腔500顶部所设调压口与分水流道10相连通，分水流道10延伸至水盒600的出口2处、或洗涤筒300内，令分压流出的进水水流直接流入水盒600，以实现对进水水流进行自动压力调解的目的；同时，使调压口3与外部大气直接相连通，以调整供水流道100内的负压。
本实施例中，阀片6与调压口3相接面处设有至少一圈密封圈、阀片6与调压腔500的进口1相接面处设有至少一圈密封圈、阀片6与阀芯4相接面处设有至少一圈密封圈13。本实施例中，阀片6的外周包裹有一层由弹性材质构成的、覆盖上下两侧的密封垫12；柱状阀芯4的中部外周套设有至少一圈由弹性材质构成的密封圈13。优选的，调压腔500的底壁上设有一圈向上凸出的凸筋15，所述凸筋15与阀片4上所设密封垫12相对应同轴等大设置。
实施例5
本实施例还提供了一种洗衣机，所述洗衣机安装有上述实施例1至4任一所述的自动投放装置，自动投放装置的出水口与洗涤筒300相连，以将贮液盒200内经进水水流抽至水盒600的添加剂随洗衣机进水水流送入洗涤筒300内。
上述仅为本发明的较佳实施例及所运用技术原理。本领域技术人员会理解，本发明不限于这里所述的特定实施例，对本领域技术人员来说能够进行各种明显的变化、重新调整和替代而不会脱离本发明的保护范围。

Claims (30)

  1. 一种添加剂自动投放装置，包括：
    供水流道；
    贮液盒，其内含有添加剂；
    抽吸结构，能够将贮液盒内的添加剂抽至供水流道、并随水流输送至出水口；
    防倒吸装置，设于供水流道的调压口处；在供水流道进水时，受流经水流压力作用而控制防倒吸装置闭合调压口；在供水流道内产生负压时，控制防倒吸装置打开调压口、调节供水流道内压力。
  2. 根据权利要求1项所述的添加剂自动投放装置，其特征在于，防倒吸装置包括一阀片，阀片对应覆盖于供水流道内侧的调压口处；
    优选的，阀片外周凸出于调压口设置，以在阀片受水压而密封调压口时阀片与供水流道内壁相密封接触，阀片与供水流道的相接面处设有至少一圈密封圈。
  3. 根据权利要求2项所述的添加剂自动投放装置，其特征在于，阀片朝向供水流道外侧设有穿过调压口的支架，支架的传出端设有端盖，弹簧结构夹持于端盖与阀芯之间，以使阀片在支架的限制作用下仅能产生沿调压口轴向的伸缩移动。
  4. 根据权利要求1至3任意一项所述的添加剂自动投放装置，其特征在于，阀片上设有开口，开口处安装有阀芯，阀芯经弹力结构安装于开口处，阀芯受弹力结构的弹力作用对应密封调压口、在流经调压腔水流压力大于设定值时克服弹力并推动阀芯打开调压口，将供水流道内水流进行调压分流。
  5. 根据权利要求4所述的添加剂自动投放装置，其特征在于，阀芯设于调压腔外侧的调压口，弹力结构对阀芯提供一自调压腔外部向内部方向的弹力，使阀芯对应密封调压口；调压腔内流经的水流对阀芯施加向外移动的压力，在水流压力大于设定值后，水流压力克服弹力而推动阀芯向外移动、打开调压口。
  6. 根据权利要求1至5任意一项所述的添加剂自动投放装置，其特征在于，调压口与分水流道相连通，分水流道的端部通至自动投放装置的出水口。
  7. 根据权利要求1至6任意一项所述的添加剂自动投放装置，其特征在于，供水流道上设有调压腔，调压腔上设有调压口，阀片对应覆盖于调压腔内侧的调压口处，阀片受腔室内水压而对应封闭调压口；阀芯对应覆盖于调压腔外侧的阀片开口处，阀芯受腔室内水压而打开开口、或具有打开开口的趋势。
  8. 根据权利要求7所述的添加剂自动投放装置，其特征在于，调压腔竖直方向的上 下侧分别设置进口和调压口，调压腔的一侧壁上设置与抽吸结构相连的出口，阀片受流入腔室内的水流压力而克服重力向上移动至闭合调压口；
    优选的，进口与调压口同轴设置。
  9. 根据权利要求8所述的添加剂自动投放装置，其特征在于，阀片的下侧与进口相对设置，以在供水流道中停止供水、调压腔内产生负压时，阀片受重力作用而向下移动至密封覆盖进水口。
  10. 一种洗衣机，其特征在于，安装有上述权利要求1至9任一所述的自动投放装置，自动投放装置的出水口与洗涤筒相连，以将贮液盒内经供水流道中水流抽出的添加剂随洗衣机进水水流送入洗涤筒内。
  11. 一种添加剂自动投放装置，包括：
    供水流道，可将水输送至抽吸结构；
    贮液盒，其内含有添加剂；
    抽吸结构，能够通过对供水流道内流经水流产生负压，将贮液盒内的添加剂抽出并随水流输送至出水口；
    调压装置，设于供水流道上对流经水流进行调压，以在供水水流压力过大时将流至抽吸结构的水流分流。
  12. 根据权利要求11所述的添加剂自动投放装置，其特征在于，供水流道上设有调压腔，调压腔上设有调压口，调压装置设于调压口处，以在供水水流压力大于设定值后，使调压装置在水流压力作用下打开调压口。
  13. 根据权利要求12所述的添加剂自动投放装置，其特征在于，调压装置包括经弹力结构安装于调压口处的阀芯，阀芯受弹力结构的弹力作用对应密封调压口、在流经调压腔水流压力大于设定值时克服弹力并推动阀芯打开调压口。
  14. 根据权利要求13所述的添加剂自动投放装置，其特征在于，阀芯设于调压腔外侧的调压口，弹力结构对阀芯提供一自调压腔外部向内部方向的弹力，使阀芯对应密封调压口；调压腔内流经的水流对阀芯施加向外移动的压力，在水流压力大于设定值后，水流压力克服弹力而推动阀芯向外移动、打开调压口。
  15. 根据权利要求11至14任意一项所述的添加剂自动投放装置，其特征在于，调压口与分水流道相连通，分水流道的端部通至自动投放装置的出水口。
  16. 根据权利要求11～15任意一项所述的添加剂自动投放装置，其特征在于，所述调压装置包括一阀片，阀片随供水流道内压力变化而相对调压口可产生伸缩移动，以在供水流道流经水流的压力推动下使阀片对应密封调压口、在供水流道内产生负 压时阀片受重力而打开调压口。
  17. 根据权利要求16项所述的添加剂自动投放装置，其特征在于，阀片上设有联通供水流道内外的开口，阀芯设于开口处，并在弹力结构的推动下使阀芯对应密封开口。
  18. 根据权利要求17项所述的添加剂自动投放装置，其特征在于，阀芯对应设于供水流道外侧的阀片开口处；朝向供水流道外侧延伸有穿过调压口的支架，支架与阀片之间设有压紧的弹簧，弹簧的两端分别与支架和阀芯相连；
    优选的，阀片朝向供水流道外侧设有穿过调压口的支架，支架上端设有具有镂空孔的端盖、下端与阀片相连，弹簧呈压缩状态的夹持于端盖与阀片之间，弹簧两端与阀片和端盖分别相连，以使阀片在支架的作用下限制于调压口处、仅能产生沿调压口轴向的伸缩移动。
  19. 根据权利要求18项所述的添加剂自动投放装置，其特征在于，阀片外周凸出于调压口设置，以在阀片受水压而密封调压口时阀片与供水流道内壁相密封接触，阀片与供水流道的相接面处设有至少一圈密封圈；
    优选的，阀片的外周包裹有一圈由弹性材质构成的密封圈。
  20. 一种洗衣机，其特征在于，安装有上述权利要求11至19任一所述的自动投放装置，自动投放装置的出水口与洗涤筒相连，以将贮液盒内经供水流道中水流抽出的添加剂随洗衣机进水水流送入洗涤筒内。
  21. 一种添加剂自动投放装置，包括：水盒，水盒上设有调压腔，调压腔上设有与进水管相连的进口、与抽吸结构相连的出口，调压腔顶部还设有与外部相连通的调压口，调压腔内设有可上下竖直移动的阀片，以在腔室内压力作用下对应封闭、或打开调压口；阀片上设有开口，开口处设有将其密封的阀芯，阀芯经弹力结构安装于阀片上，以在供水流道中水流压力过大时推动阀芯、打开开口。
  22. 根据权利要求21所述的添加剂自动投放装置，其特征在于，出口设于调压腔的一侧，出口与构成抽吸结构的文丘里管的小口径进口端相连；进口设于调压腔的底部；调压腔的进水与调压口同轴设置。
  23. 根据权利要求21或22所述的添加剂自动投放装置，其特征在于，调压腔的顶壁设有贯通的套筒，套筒中空通道构成调压口；阀片对应覆盖设于套筒下端，阀片连有与套筒相插接的限位结构，以使阀片在重力及水流压力共同作用下沿竖直方向伸缩移动；
    优选的，所述的限位结构包括一竖直延伸的支架，支架外壁于套筒内壁对应限位接 触，支架下端与阀片相固定连接、支架上端安装有端盖；支架的高度不大于套筒高度、不小于套筒底端与调压腔进口之间的高度差；
    优选的，端盖上设有多个贯穿上下两侧设置的镂空孔。
  24. 根据权利要求23所述的添加剂自动投放装置，其特征在于，开口设于阀片的中心处，阀芯呈柱状穿过开口，柱状阀芯的上端设有向外凸出的一圈凸出部，凸出部的外周超出于开口，使柱状阀芯在重力作用下、自上向下对应密封开口。
  25. 根据权利要求24所述的添加剂自动投放装置，其特征在于，调压腔的底部设有向下凹陷的凹槽，凹槽的敞口形状与阀片相对设置，以使阀片受重力和/或负压作用而下落至调压腔底部时，阀片下侧与调压腔凹槽敞口外周相密封接触、将进口闭合；优选的，柱状阀芯凸出于阀片的下端与调压腔的进口相对应，以使阀片受重力和/或负压作用而下落至调压腔底部时，柱状阀芯下端与进口相对应密封插接。
  26. 根据权利要求23至25任意一项所述的添加剂自动投放装置，其特征在于，调压腔的进口设于套筒与调压腔侧壁之间，阀片的外周径大于套筒下端周径、小于调压腔内侧壁周径，以使自进口流入的腔室的水流自套筒与调压腔壁之间的间隙流至出口。
  27. 根据权利要求23至25任意一项所述的添加剂自动投放装置，其特征在于，所述弹力结构为竖直延伸的弹簧，弹簧呈压缩的安装于支架端盖与阀芯之间，弹簧的两端分别与端盖和阀芯相连；
    优选的，支架包括多根竖直延伸的连接筋，连接筋的上端与端盖相固定连接、下端与阀片相固定连接，相邻连接筋之间、和/或连接筋上设有供水流穿过的镂空区域；优选的，各连接筋沿与套筒内壁相贴合的圆筒面设置，弹簧设于各连接筋相围区域内。
  28. 根据权利要求21至27任意一项所述的添加剂自动投放装置，其特征在于，所述水盒包括一扣合于顶部的顶盖，顶盖还对应覆盖扣合调压腔的顶部，所述调压腔与水盒、或顶盖一体成型构成；顶盖上侧设有分水流道，调压腔顶部所设调压口与分水流道相连通，分水流道延伸至水盒出水口处、或洗涤筒内，使调压口与外部大气直接相连通。
  29. 根据权利要求21至28任意一项所述的添加剂自动投放装置，其特征在于，阀片与调压口相接面处设有至少一圈密封圈、阀片与调压腔进口相接面处设有至少一圈密封圈、阀片与阀芯相接面处设有至少一圈密封圈；
    优选的，阀片的外周包裹有一层由弹性材质构成的、覆盖上下两侧的密封垫；柱状 阀芯的中部外周套设有至少一圈由弹性材质构成的密封圈；
    优选的，调压腔的底壁上设有一圈向上凸出的凸筋，所述凸筋与阀片上所设密封垫相对应同轴等大设置。
  30. 一种洗衣机，其特征在于，安装有上述权利要求21至29任一所述的自动投放装置，自动投放装置的出水口与洗涤筒相连，以将贮液盒内经进水水流抽至水盒的添加剂随洗衣机进水水流送入洗涤筒内。
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