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US20140208496A1 - Automatic flushing system for toilet and electronic bidet having the same - Google Patents

Automatic flushing system for toilet and electronic bidet having the same Download PDF

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Publication number
US20140208496A1
US20140208496A1 US14/165,055 US201414165055A US2014208496A1 US 20140208496 A1 US20140208496 A1 US 20140208496A1 US 201414165055 A US201414165055 A US 201414165055A US 2014208496 A1 US2014208496 A1 US 2014208496A1
Authority
US
United States
Prior art keywords
overflow
toilet
tank
vacuum breaker
fixedly connected
Prior art date
Legal status (The legal status 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 status listed.)
Abandoned
Application number
US14/165,055
Other languages
English (en)
Inventor
Long Chen
Zhixiong PING
Weimin Ying
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Duravit AG
Original Assignee
Duravit AG
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
Application filed by Duravit AG filed Critical Duravit AG
Assigned to DURAVIT AKTIENGESELLSCHAFT reassignment DURAVIT AKTIENGESELLSCHAFT ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHEN, LONG, PING, Zhixiong, YING, WEIMIN
Publication of US20140208496A1 publication Critical patent/US20140208496A1/en
Abandoned legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D5/00—Special constructions of flushing devices, e.g. closed flushing system
    • E03D5/10—Special constructions of flushing devices, e.g. closed flushing system operated electrically, e.g. by a photo-cell; also combined with devices for opening or closing shutters in the bowl outlet and/or with devices for raising/or lowering seat and cover and/or for swiveling the bowl
    • E03D5/105—Special constructions of flushing devices, e.g. closed flushing system operated electrically, e.g. by a photo-cell; also combined with devices for opening or closing shutters in the bowl outlet and/or with devices for raising/or lowering seat and cover and/or for swiveling the bowl touchless, e.g. using sensors
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D3/00—Flushing devices operated by pressure of the water supply system flushing valves not connected to the water-supply main, also if air is blown in the water seal for a quick flushing
    • E03D3/12—Flushing devices discharging variable quantities of water
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
    • E03C1/02—Plumbing installations for fresh water
    • E03C1/10—Devices for preventing contamination of drinking-water pipes, e.g. means for aerating self-closing flushing valves
    • E03C1/106—Devices for preventing contamination of drinking-water pipes, e.g. means for aerating self-closing flushing valves using two or more check valves
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
    • E03C1/02—Plumbing installations for fresh water
    • E03C1/10—Devices for preventing contamination of drinking-water pipes, e.g. means for aerating self-closing flushing valves
    • E03C1/108—Devices for preventing contamination of drinking-water pipes, e.g. means for aerating self-closing flushing valves having an aerating valve
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D9/00—Sanitary or other accessories for lavatories ; Devices for cleaning or disinfecting the toilet room or the toilet bowl; Devices for eliminating smells
    • E03D9/08—Devices in the bowl producing upwardly-directed sprays; Modifications of the bowl for use with such devices ; Bidets; Combinations of bowls with urinals or bidets; Hot-air or other devices mounted in or on the bowl, urinal or bidet for cleaning or disinfecting

Definitions

  • the present utility model relates to an automatic flushing system for toilet and an electronic bidet toilet (EBT) having the system.
  • EBT electronic bidet toilet
  • a tank of an EBT is provided with a float switch, which activates an electromagnetic inlet valve when the water level in the tank is lowered after flushing, and which deactivates the electromagnetic inlet valve when the water level rises up to a predetermined level so as to prevent overflow of water due to further increase of water.
  • a float switch which activates an electromagnetic inlet valve when the water level in the tank is lowered after flushing, and which deactivates the electromagnetic inlet valve when the water level rises up to a predetermined level so as to prevent overflow of water due to further increase of water.
  • a vacuum breaker is disposed in a water inlet line of the toilet to prevent reflux of waste water, and the vacuum breaker may also be subjected a problem of overflow.
  • a known solution is to connect an air inlet of the vacuum breaker to the vent hole of the tank via an overflow tube so as to allow the excessive water in the vacuum breaker to flow into the tank through the overflow tube.
  • this solution fails to solve the overflow problem of both the tank and the vacuum breaker, and moreover, bubbles may be generated in the vacuum breaker during overflowing.
  • An objective of the present utility model is to provide an automatic flushing system for toilet, which can solve the overflow problem of a tank and a vacuum breaker of the toilet.
  • a first aspect of the present utility model provides an automatic flushing system for toilet, which comprises a tank and a vacuum breaker, and further comprises at least one overflow passage connecting an overflow port of the tank or the vacuum breaker to a toilet bowl.
  • the at least one overflow passage includes a first overflow line having a first end fixedly connected to a tank overflow port and a second end fixedly connected to a rim outlet of the toilet bowl, and a second overflow line having a first end fixedly connected to a vacuum breaker overflow port and a second end fixedly connected to a jet outlet of the toilet bowl.
  • the at least one overflow passage includes a first overflow line having a first end fixedly connected to a tank overflow port and a second end fixedly connected to a jet outlet of the toilet bowl, and a second overflow line having a first end fixedly connected to a vacuum breaker overflow port and a second end fixedly connected to a rim outlet of the toilet bowl.
  • the first overflow line includes a first check valve which is normally open in a direction from the first end to the second end of the first overflow line and blocks flow in an opposite direction
  • the second overflow line includes a second check valve which is normally open in a direction from the first end to the second end of the second overflow line and blocks flow in an opposite direction
  • the first check valve is vertically mounted with an end thereof which opens to the tank overflow port being located upward
  • the second check valve is vertically mounted with an end thereof which opens to the vacuum breaker overflow port being located upward.
  • first and second check valves each include a valve seat and a floating ball below the valve seat.
  • a second aspect of the present utility model provides an EBT having the aforesaid automatic flushing system for toilet.
  • an overflow passage communicating the overflow port of the tank or the vacuum breaker with a rim outlet or a jet outlet of the toilet bowl overflow problem of the tank or the vacuum breaker can be solved, and bubbles in the vacuum breaker during overflowing is eliminated.
  • a reflux of waste water via the overflow passage during flushing can be prevented by arranging a check valve in the overflow passage, in particular in the overflow line for the vacuum breaker.
  • FIG. 1 is a schematic view of an automatic flushing system for toilet according to an embodiment of the present utility model.
  • FIG. 2 is a structural view of a check valve used in the automatic flushing system for toilet shown in FIG 1 .
  • FIG. 1 schematically shows an automatic flushing system for toilet according to an embodiment of the present utility model.
  • the automatic flushing system for toilet according to the present utility model may be applied to an EBT capable of automatically flushing after use of the toilet by a user.
  • an infrared inductive probe may be provided on the front side wall of die tank to initiate flushing when detecting that the user has just left after using the toilet.
  • a pressure sensor may be at the bottom of the toilet seat to detect seating on the toilet seat and leaving of a user and to accordingly initiate flushing.
  • the automatic flushing system for toilet comprises a tank 1 .
  • a float switch 2 which is connected with a float inside the tank 1 , is attached to the tank 1 .
  • water level in the tank 1 is lowered and the float accordingly drops due to the gravity.
  • the float switch 2 is turned on and an electromagnetic inlet valve 3 is correspondingly opened, and tap water from a water supply pipe flows into the tank 1 through a water inlet line 4 .
  • the float rises as the floating force overcomes the gravity force.
  • the float switch 2 is turned off and the electromagnetic inlet valve 3 is correspondingly closed, and water inflow of the tank 1 is stopped.
  • a vacuum breaker 5 is disposed in the water inlet line 4 .
  • the vacuum breaker 5 has an air inlet 6 which, in a normal state, is covered by a plate. When a negative pressure occurs in the water inlet line 4 , the plate is pushed aside under the action of outside atmospheric pressure, so that external air can flow into the vacuum breaker 5 via the air inlet 6 to compensate negative pressure in the water inlet line 4 .
  • a master shutoff valve 7 , a filter 8 and a non-return flux regulator 9 are disposed between the water supply line and the vacuum breaker 5 , and the structures and functions of these components are well-known to those skilled in the art and thus detailed description thereof are omitted herein.
  • the outlet or flushing port of the tank 1 is connected to a distribution valve 11 via a pressure pump 10 .
  • the distribution valve 11 switches water from the tank 1 under control of a stepper motor M, such that the water selectively flows to the rim outlet of the toilet bowl via a first adaptor 12 and a first hose 13 or flows to the jet outlet of the toilet bowl via a second adaptor 14 and a second hose 15 .
  • the stepper motor M and the distribution valve 11 may control the water from the tank 1 such that it flows to both the rim outlet of the toilet bowl and the jet outlet of the toilet bowl, and may control a blow rate ratio therebetween.
  • the automatic flushing system for toilet is provided with a first overflow system, which comprises a tank overflow non within the tank 1 and as first overflow line 16 connecting the tank overflow port to the first adaptor 12 .
  • the tank overflow port is located inside the tank above the predetermined water level at which the float switch 2 is turned off.
  • the first overflow system When all the components of the system are in normal operation, the water level in the tank 1 will not exceed the predetermined water level, so the first overflow system need not to work.
  • the water level in the tank 1 exceeds the predetermined water level and reaches the tank overflow port due to failure of the float and the like, the excessive water outflows from the tank overflow port and flows to the first adaptor 12 via ms first overflow line 16 , and then flows to the rim outlet of the toilet bowl via the first hose 13 and enters into the toilet bowl.
  • the first overflow system is further provided with a first check valve 17 in the first overflow line 16 .
  • the first check valve 17 is normally open in a direction from the tank overflow port to the first adaptor 12 and blocks flow in a direction front the first adaptor 12 to the tank overflow port.
  • the automatic flushing system for toilet is further provided with a second overflow system, which comprises a vacuum breaker overflow port and a second overflow line 18 connecting the vacuum breaker overflow port to the second adaptor 14 .
  • the second overflow system is provided with a second check valve 19 in the second overflow line 18 .
  • the second check valve 19 is normally open in a direction from the vacuum breaker overflow port to the second adaptor 14 and blocks flow is a direction from the second adaptor 14 to the vacuum breaker overflow port.
  • the excessive water in the vacuum breaker 5 outflows from the vacuum breaker overflow port and flows to the second adaptor 14 via the second overflow line 18 , and then flows to the jet outlet of the toilet bowl via the second hose 15 and enters into the toilet bowl.
  • FIG. 2 illustrates a schematic structure of the first check valve 17 and the second check valve 19 .
  • Each of the check valves as shown in FIG. 2 , is vertically mounted and includes a valve seat 20 and a floating ball 21 located below the valve seat 20 .
  • An end of the first check valve 17 which opens to the tank overflow port is located upward, while the other end which opens to the rim outlet of the toilet bowl is located downward.
  • An end of the second cheek valve 19 which opens to the vacuum breaker overflow port is located upward, while the other end which opens to the let outlet of the toilet bowl is located downward.
  • the water overflowing from the tank 1 or the vacuum breaker 5 forces the floating ball 21 to move downwardly away from the valve seat 20 , so that he cheek valve is kept open in a direction toward the rim outlet of the jet outlet of the toilet bowl.
  • the flushing water flowing into the first overflow line 16 or the second overflow line 18 during flushing presses the floating ball 21 upwardly against the valve seer 20 .
  • the floating force of the waste water in the first overflow hoe 16 or the second overflow line 18 will press the floating ball 21 against the valve seat 20 . Therefore, it is possible to ensure that the check valve is kept in a closed state in a direction toward the tank overflow port or the vacuum breaker overflow port, thereby preventing the waste water flowing into the tank or the vacuum breaker via the overflow system.
  • the overflow port of the tank 1 is connected to the rim outlet of the toilet bowl via the first overflow line 16
  • the overflow port of the vacuum breaker 5 is connected to the jet outlet of the toilet bowl via the second overflow line 18
  • the first overflow line 16 may connect the overflow port of the tank to the jet outlet of the toilet bowl
  • the second overflow line 18 may connect the overflow port of the vacuum breaker to the rim outlet of the toilet bowl.
  • the automatic flushing system for toilet in the above embodiment is provided with a first overflow system for the tank 1 and a second overflow system for the vacuum breaker 5
  • the present utility model is not limited to this.

Landscapes

  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Water Supply & Treatment (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Molecular Biology (AREA)
  • Epidemiology (AREA)
  • Sanitary Device For Flush Toilet (AREA)
  • Self-Closing Valves And Venting Or Aerating Valves (AREA)
  • Domestic Plumbing Installations (AREA)
US14/165,055 2013-01-28 2014-01-27 Automatic flushing system for toilet and electronic bidet having the same Abandoned US20140208496A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2013200456123U CN203200865U (zh) 2013-01-28 2013-01-28 座便器自动冲水系统及电子座便器
CN201320045612.3 2013-01-28

Publications (1)

Publication Number Publication Date
US20140208496A1 true US20140208496A1 (en) 2014-07-31

Family

ID=48875552

Family Applications (1)

Application Number Title Priority Date Filing Date
US14/165,055 Abandoned US20140208496A1 (en) 2013-01-28 2014-01-27 Automatic flushing system for toilet and electronic bidet having the same

Country Status (6)

Country Link
US (1) US20140208496A1 (zh)
EP (1) EP2759645A3 (zh)
JP (1) JP2014145246A (zh)
KR (1) KR20140096957A (zh)
CN (1) CN203200865U (zh)
TW (1) TW201430193A (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2566452A1 (es) * 2014-10-09 2016-04-12 Roca Sanitario, S. A. Dispositivo para un asiento de un inodoro con funciones de bidé, e inodoro y asiento de inodoro que comprende dicho dispositivo
CN115182426A (zh) * 2022-07-20 2022-10-14 佛山市恒洁卫浴有限公司 马桶的冲水系统及马桶

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109235579B (zh) * 2018-10-22 2023-09-19 恒洁智能卫浴(深圳)有限公司 冲水压力损失阻止组件和水箱
JP7475237B2 (ja) * 2020-08-04 2024-04-26 株式会社Lixil 便器装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090313750A1 (en) * 2006-12-28 2009-12-24 Toto Ltd. Flush toilet
US20100077544A1 (en) * 2006-08-31 2010-04-01 Toto Ltd. Flush toilet
US7721359B2 (en) * 2004-03-31 2010-05-25 Toto Ltd. Vacuum breaker, and water-feed valve assembly and water closet provided therewith
US8281424B2 (en) * 2007-06-28 2012-10-09 Toto Ltd. Flush toilet

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4196508B2 (ja) * 1999-12-22 2008-12-17 Ｔｏｔｏ株式会社 洗浄水供給装置
JP5130802B2 (ja) * 2007-06-28 2013-01-30 Ｔｏｔｏ株式会社 水洗便器

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7721359B2 (en) * 2004-03-31 2010-05-25 Toto Ltd. Vacuum breaker, and water-feed valve assembly and water closet provided therewith
US20100077544A1 (en) * 2006-08-31 2010-04-01 Toto Ltd. Flush toilet
US20090313750A1 (en) * 2006-12-28 2009-12-24 Toto Ltd. Flush toilet
US8281424B2 (en) * 2007-06-28 2012-10-09 Toto Ltd. Flush toilet

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Patent Application No. 2013-247223. Notice of Reasons for Refusal (first). 11-2014. Shichui. *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2566452A1 (es) * 2014-10-09 2016-04-12 Roca Sanitario, S. A. Dispositivo para un asiento de un inodoro con funciones de bidé, e inodoro y asiento de inodoro que comprende dicho dispositivo
CN115182426A (zh) * 2022-07-20 2022-10-14 佛山市恒洁卫浴有限公司 马桶的冲水系统及马桶

Also Published As

Publication number Publication date
CN203200865U (zh) 2013-09-18
KR20140096957A (ko) 2014-08-06
JP2014145246A (ja) 2014-08-14
EP2759645A3 (en) 2015-12-02
TW201430193A (zh) 2014-08-01
EP2759645A2 (en) 2014-07-30

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Legal Events

Date Code Title Description
AS Assignment

Owner name: DURAVIT AKTIENGESELLSCHAFT, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:CHEN, LONG;PING, ZHIXIONG;YING, WEIMIN;REEL/FRAME:032126/0879

Effective date: 20130730

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION