CN1021841C - Water closet flushing apparatus - Google Patents
Water closet flushing apparatus Download PDFInfo
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- CN1021841C CN1021841C CN 89101092 CN89101092A CN1021841C CN 1021841 C CN1021841 C CN 1021841C CN 89101092 CN89101092 CN 89101092 CN 89101092 A CN89101092 A CN 89101092A CN 1021841 C CN1021841 C CN 1021841C
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- flushing
- lavatory
- flow velocity
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Abstract
A toilet flushing device includes a water supply system for supplying flushing water through a water supply pipe to a toilet bowl, a flow rate control valve disposed in the water supply pipe, for varying the rate of flow of flushing water supplied to the toilet bowl through control of the opening of the valve, an actuator for actuating the flow rate control valve, and a controller for controlling operation of the actuator. The controller controls operation of the actuator to vary the opening of the valve stepwise with time in one flushing cycle according to a predetermined flow rate pattern so that the flushing water is supplied toilet bowl at a flow ate which varies stepwise with time.
Description
The present invention relates to a kind of flusher of lavatory, more specifically, the present invention relates to a kind of flusher that can reduce the lavatory of washing water quantity.
Traditional lavatory flushing device has generally comprised a flushing water supply source, a flushing water feeding pipe and a flushing valve that is contained in the flushing water feeding pipe that is communicated with flushing water supply source and lavatory.
Flushing valve generally is divided into the automatic flush valve of manual flushing valve and for example electromagnetic steering valve, and the valve of arbitrary type all can be controlled selectively, to provide a large amount of in use as required or flushing water in a small amount.
Yet in traditional lavatory flushing device, when a large amount of flushing water or flushing water in a small amount were provided, flushing valve was located at one of them position of two prepositions, and was to keep constant at the opening degree of the flushing valve in each precalculated position.Its result owing to position, its storage capability, the layout of flushing water feeding pipe, the flow speed characteristic of flushing valve and the variation of the flow rate of water flow that the lavatory size causes of flushing water supply source, is difficult to wash with a predetermined water yield.
The flush efficiency in lavatory depends on the variation of flushing water flow velocity subsequently, and its flushing water flow velocity spectrum depends on the flow speed characteristic of layout feature, flushing valve of size and dimension, the flushing water feeding pipe in lavatory and hydraulic pressure or the like.When with as during various flow velocitys spectrum flushing water in traditional lavatory flushing device, be difficult to wash each lavatory with high efficiency.And, for reaching required rinse capability, wash with the water yield that surpasses aequum, thereby unnecessarily waste flushing water.
And the flushing water in the lavatory is by a discharged.In traditional lavatory flushing device, partly produce a siphonage at the trap that is positioned at the lavatory, thereby increase discharge value, improve the developing result in lavatory thus.For producing siphonage, the water discharge passage between certain part of trap part and discharge pipe must fill with water or logical with water at least.
Then, in traditional lavatory flushing device, flushing water may be discharged through discharge pipe, is full of water up to discharge pipe, therefore when flushing, must provide the flushing water that is far longer than discharge value.Its result produces the lavatory flushing device of the problem of a large amount of flushing waters
Therefore an object of the present invention is to provide a kind of lavatory flushing device that can solve the above-mentioned and other problem of in traditional lavatory flushing device, running into substantially.
Another object of the present invention provides a kind of lavatory flushing device that can wash inside, lavatory effectively.
A further object of the present invention provides a kind of lavatory flushing device that can operate effectively with the flushing dose that reduces.
Lavatory flushing device characteristic according to the present invention is for including a flushing water supply source, a flushing water feeding pipe that is communicated with flushing water supply source and lavatory, one is contained in flushing valve in the flushing water feeding pipe and one and is connected to flushing valve to control the current velocity controller of its opening degree, thereby in a flushing operation, flushing water supplies to the lavatory from flushing water according to a predetermined flow velocity spectrum.
According to the present invention, can be according to the size and dimension in lavatory, the use in flushing water feeding pipe and lavatory and determine a preferred flow velocity spectrum responds this flow velocity spectrum, the opening degree of current velocity controller control flushing valve, thus washing water quantity that can be less washes the lavatory effectively.
In the accompanying drawings:
Fig. 1 is the combination of a piping diagram and a programme diagram, shows first embodiment of corresponding lavatory flushing device of the present invention;
Fig. 2 is a sectional view, has shown a shutoff valve that uses in first embodiment shown in Fig. 1, a flushing valve and an easamatic power brake;
Fig. 3 is a sectional view, shows a corresponding flushing valve of the present invention and a device that drives this flushing valve;
Fig. 4 is a programme diagram, shows a control system in correspondence lavatory flushing device of the present invention;
Fig. 5 and Fig. 6 are curve maps, show corresponding flushing water flow velocity spectrum of the present invention respectively;
Fig. 7 is a programme diagram, shows the control flow of being finished by control system;
Fig. 8 a, 8b and 8c are the lateral views of describing the operation format of corresponding piezo-activator of the present invention;
Fig. 9 is the view that is similar to Fig. 3, with the device of the modification of analysing and observe the flushing valve that shows a corresponding modification of the present invention and a flushing valve that drives this modification;
Figure 10 is a sectional view, shows flushing valve and device that drives the modification of this flushing valve of another modification;
Figure 11 is the combination of a lateral view and a programme diagram, shows second embodiment of corresponding lavatory flushing device of the present invention;
Figure 12 is a sectional view, shows a control valve that uses in second embodiment shown in Figure 11;
Figure 13 is a programme diagram, is presented at the control flow of second embodiment shown in Figure 11.
In first embodiment of lavatory flushing device corresponding of the present invention shown in Figure 1, a flushing water supply source 11, for example be installed in the water tank on building top etc., flushing water delivered to the lavatory 14 that is installed in each layer by a flushing water trunk line 12 and a flushing water branch pipe(tube) 13.
16, one flushing valves 17 of 15, one flow-rate sensors of a shutoff valve and an easamatic power brake 18 are installed in the branch pipe(tube) 13 with described order with the direction of trunk line 12 towards lavatory 14.
Fig. 2 has shown the structure of shutoff valve 15, flushing valve 17 and easamatic power brake 18, but does not show flow-rate sensors 16.
Flushing valve 17 comprises a diaphragm valve and a flushing valve drive unit that includes the post 19 that is connected to flushing valve 17 with one heart, and the piezo-activator 20 around many cylindrical outer surfaces that are arranged on post 19 and the one side of flushing valve 17 are connected.
Fig. 3 is a sectional view, shows the flushing valve drive unit in detail with the ratio of amplifying.Housing with cylinder shape actuater of an antetheca 21a and a rear wall 21b is arranged on the rear end of flushing valve 17, and post 19 is installed in the housing 21, and can vertically move on it is axial.The bottom of the keeper 22 of a L shaped cross section is fixed on branch pipe(tube) 13 1 sides that are positioned at housing 21.Many piezoelectric element 23a and 23b are connected on two surfaces of the upper end 22a that bends towards post 19 with one heart.Cross section is the end that the bottom of L shaped pipe shape elastic bridge fitting 24a and 24b is fixedly connected on piezoelectric element 23a and 23b respectively, and the piezoelectric element 23a of this end and the keeper that is connected to L shaped cross section is relative with the end of 23b.Many piezoelectric element 25a and 25b are provided with one heart, thereby around the column part external surface of concentric post 19.
Piezoelectricity original paper 23a, 23b, 25a and 25b are with above-mentioned cylindrical form setting, and the electric wire 28 that voltage is added to these elements is connected with the end of piezoelectric element respectively.
If desired, whether seat inductor 51 is located on the flush toilet 14 in lavatory and takes on the toilet seat to detect.From the output signal of seat inductor 51, and be sent to control device 30 from the output signal of flow-rate sensors 16.
Fig. 5 is the chart that a demonstration is stored in the flushing water flow velocity spectrum program in the storing apparatus 33 in advance.According to this program,, in a short time, flow out a large amount of flushing waters in the phase I of flushing; In the second stage of subsequently flushing, a large amount of flushing waters that are slightly less than the flushing dose of phase I flowed out in a scheduled time; The 3rd or final stage, flushing water in a small amount flowed out in a scheduled time.
Preferred flow velocity spectrum program is decided according to the characteristic of the size in lavatory, flushing water supply line, pressure or the like.Very important characteristics of program are that in the once flushing operating process, As time goes on and gradually the flow velocity of flushing water reduces.
Fig. 6 shows that another is stored in the chart of the flushing water flow velocity spectrum program in the storing apparatus 33 in advance, this program comprises a pre-flushing flow process A who gets started after the user is sitting in the toilet seat, a large amount of flow process B that flow that cause that flushing water determines with a mode of occupation according to the lavatory, and one make flushing water with a small amount of mobile flow process C.Make flushing water with a large amount of flow process B that flow with flushing water is illustrated in Fig. 6 with a small amount of flow process C that flows, but the flow velocity spectrum is selected like this, promptly flushing water reduces as time passes and gradually.
The operation format of lavatory flushing device and said structure below will be described.
Fig. 7 is a flow diagram, shows the control flow of first embodiment.At first, when the user is sitting on the seat of flush toilet 14 in lavatory, just sensed and seat inductor 51 sends an output signal by seat inductor 51, this signal is sent to microprocessor 32 subsequently, respond the output signal that this receives, microprocessor 32 produces the command signal of a startup actuator 20, and actuator is opened flushing valve 17 with a preset time then, thus the flushing of the pre-flushing of beginning flow process.Pre-flushing can last till up to the user to be left from the toilet seat.
When pre-flushing flow process finishes and after the user is discharged to its ight soil in the lavatory flush toilet 14, the user presses a large amount of push button of the push button switch 41 on control panel 40 or push button (not shown) in a small amount according to mode of occupation.This command signal is sent to actuator 20 from microprocessor 32 then, thereby flushing operation just is accomplished according to being stored in the flow velocity spectrum (for example, flow velocity spectrum as shown in Figure 5) in the storing apparatus 33 in advance.
Such flow velocity spectrum determines by control actuator 20.Now referring to Fig. 8 a, 8b and 8c, the operation format of the piezo-activator of the first embodiment of the present invention will be described below.
Piezoelectric element has response and is applied to the voltage on its relative two and the characteristic of being out of shape, when a voltage is applied to piezoelectric element 23a that its upper and lower end is fixed on the end 22a of keeper 22 and elastic bridge fitting 24a, 24b, when 23b is last, causes that these elements 23a, 23b extend on the axis direction of post 19.After voltage interruption, element is withdrawn into its normal shape.When a voltage is applied to the piezoelectric element 25a of the inner peripheral surface that is fixed on elastic bridge fitting 24a, 24b, when 25b is last, causes that these elements radially inwardly shrink, after voltage interruption, element 25a, 25b radially outward stretch and get back to its corresponding original state.
In Fig. 8 a, do not have voltage to be applied on piezoelectric element 23a, 23b and the 25a, but have voltage to be applied on the piezoelectric element 25b.Therefore, piezoelectric element 23a, 23b and 25a axially and at it radially keep its original state respectively at it, but the diameter of piezoelectric element 25b is to have reduced.Its result unclamps the post 19 of clamping at piezoelectric element 25a block brake 26a on one side, but at piezoelectric element 25b block brake 26b on one side clamping column 19 then.
Thereafter, when voltage is applied to piezoelectric element 23a, 23b(Fig. 8 b) when going up, element 23a, 23b extend axially at it, thus produce a displacement that is equivalent to piezoelectric element 23a, 23b elongation by the post that block brake 26b clamps at directions X.
When voltage is applied on the piezoelectric element 25a again, and when not having voltage to be applied to piezoelectric element 25b to go up, block brake 26a clamping column 19.Then, released by the clamping of piezoelectric element 25b generation.And, when voltage be applied to piezoelectric element 23a, when 23b is last, post 19 is clamped at piezoelectric element 25a block brake 26a on one side.In this case, at piezoelectric element 25a block brake 26a clamping column 19 on one side, thereby post 19 produces a displacement (Fig. 8 c) that is equivalent to piezoelectric element 23a, 23b amount of contraction at directions X.
When repeating above-mentioned steps, post 19 just can resemble and move with high accuracy the looper.Therefore, utilize such step, just can control by the guide end of post 19 and the annular space that inner wall surface limited 191 in hole 171 with the accuracy of height, thereby import the amount of the flushing water of a pressure chamber 192, and just can be with the pin-point accuracy adjusting by the flushing water discharge rate in hole 171 by hole 172.Its result just can control the rising (degree of unlatching) of flushing valve 17 with pin-point accuracy, thereby just can control flow velocity (Fig. 3) exactly.
The making alive of piezoelectric element 23a, 23b, 25a and 25b or to unload voltage be to be stored in flow velocity spectrum in the storing apparatus 33 and control by microprocessor 32 response.The opening degree of flushing valve 17 is in check, thereby can obtain a required flow velocity spectrum.
In first embodiment, when flow-rate sensors 16 is inserted in the branch pipe(tube) 13, detectable definite flow velocity in flushing operation, from the output signal of the definite flow velocity of representative of flow-rate sensors 16 and the programmed flow from storing apparatus 33, read in microprocessor relatively, the actual flow velocity that echo probe is arrived and the difference of programmed flow produce the signal of correcting flushing valve 17 opening degrees.So just can correctly control the opening degree of flushing valve 17, thus a flushable more accurate water yield.
According to first embodiment, flushing can be finished according to a preferable flow rate spectrum, and this flow velocity spectrum depends on the size of lavatory flush toilet 14, the layout of flushing water feed system and application target of flush toilet 14 or the like.Can adjust or slightly change the flow velocity spectrum very simply by the program of storage in the storing apparatus 33 in the change control device 30.
Compare with traditional flushing water flow velocity shown in Figure 5, the flow velocity of existing flushing water can reduce significantly.And, under the situation that washing water quantity limits, can obtain preferred flow velocity spectrum at an easy rate.
After the flushing, if desired, supply with sealing water with storage of water in lavatory flush toilet 14.
In first embodiment, used seat inductor 51 and flow-rate sensors 16, but their optional parts can use selectively as required.
Fig. 9 shows the modified form of piezo-activator, and it is similar to the piezo-activator among Fig. 3.Parts are given same label like Fig. 3 and Fig. 9 middle finger phasing, just no longer describe in detail thereby contrast Fig. 3 has done the parts of describing in detail.In the piezo-activator 40 of modified form, many thin annular piezoelectric elements perpendicular to the direction layering of post 19 around post 19, as first embodiment that above-mentioned contrast Fig. 3 is described, these piezoelectric elements utilize the cross section to be installed for end 22a and elastic bridge fitting 24a, the 24b of the keeper 22 of L type.
Piezoelectric element 41a, the 41b making alive of being installed as the end 22a that utilizes keeper 22 or when unloading voltage causes that post 19 is at its axial top offset.When piezoelectric element 42a, the 42b making alive installed by elastic bridge fitting 24a, 24b at upper and lower two ends of post 19 or when unloading voltage, piezoelectric element 42a, 42b extend on perpendicular to the axial direction of post 19 or shrink.Subsequently, the making alive of piezoelectric element 41a, 41b, 42a, 42b, unload voltage transformation and repeat, just can cause that post 19 is similar to the motion of contrast 8a, 8b and 8c detailed description.
Figure 10 is to analyse and observe the flushing valve drive unit that form shows a modified form.In this example, spherical valve 47 is connected with a screw element 44 as flushing valve and by a valve rod 43, this screw element 44 be inserted in again successively the axial internal thread hole 46a that forms on the gear 46 that a rotation is arranged in a housing 45 also and this internal thread hole 46a mesh.Gear 46 by a gear train 48 with one for example the CD-ROM drive motor of stepper motor 49 be connected, motor 49 is connected with control device (Fig. 4) again, thus the rotation of stepper motor 49 is to be controlled by the control signal that sends from microprocessor 32.
In above-mentioned flushing valve drive unit, respond a predetermined control signal that reason machine 32 sends outside control device 30 little, rotation that can control step motor 49, and be sent to gear 46 by gear train 48.Because 44 engagements of internal thread hole 46a and external thread piece, the rotation of gear 46 just cause valve rod 43 and advance on itself axis or retreat.Its result forces spherical valve 47 to move at the axis direction of valve rod 43.The opening degree of flushing valve just can change like this, thereby washing water quantity is controlled.
Actuator for the drive unit of above-mentioned flushing valve can use a stepping linear motor, hydraulic motor or similar motor.For flushing valve, can use various valves, for example pilot valve, ball valve, gate valve or valve-like.
Figure 11 is a constitutional diagram that shows second embodiment of the present invention system, the lateral view of analysing and observe and block diagram, and second embodiment is provided with a water discharge system to improve the discharge efficiency of flushing water.
In flush toilet 14, the staving part 14a that stores the flush toilet of flushing water W is the flushing water passage 14b that double-walled construction and the flushing water W that limits a guiding and provide by branch pipe(tube) 13 enter toilet staving part 14a.And one is suitable for making flushing water to communicate in the end formation of staving part 14a and with an ight soil water discharge spout 51 to the trap 14c at upper reaches from the bottom of staving part 14a.A control valve 52 is located in the delivery pipe 51.As shown in Figure 12, the structure of control valve 52 is like this, promptly fexible film 54 is along the inner wall surface extension that be barrel-shaped tubular body 53 substantially, water imports the space that forms by a water inlet 55 that passes the wall of tubular body 53 between the inner wall surface of tubular body 53 and film 54, wing 54a radially inwardly stretches out from the lower end of film 54.
An arm 56 partly extends to the delivery pipe 51 in control valve 52 downstreams from trap 14c, thereby gives control valve 52 shunts, is provided with a manifold valve in arm 56, in order to open or to close arm 56.Manifold valve 57 is opened automatically or is closed by a starter 57a, and this starter is by control device 30(Fig. 4) microprocessor 32 controlled.Water inlet 55 is provided with an inlet valve 58 of being opened or being closed by a starter 58a, and starter 58a is controlled by the microprocessor 32 of control device 30.
A water level sensor 61 that is used to survey flushing water W water level is located at the position that is higher than toilet staving part 14a, pressure inductor 62 according to pressure detection water level is located at the bottom of toilet staving part 14a, water level sensor 61 is connected with control device 30 with pressure inductor 62, thereby their output signal is transferred into microprocessor 32.Flow-rate sensors 16, water level sensor 61 and pressure inductor 62 all are used to survey the water level of staving part 14a, thereby can choose one of them as required wantonly.
Below will specifically describe the operation format of the second embodiment of the invention of said structure.Figure 13 is a programme diagram of finishing second embodiment operation.At first, thereby be sitting in when starting the seat inductor on the flush toilet when the user finishes a pre-flushing operation or user, flushing operation just begins to carry out.The command signal of response control apparatus, water inlet valve 58 is just opened, guiding water enters in the tubular body 53 by water inlet 55, thus film 54 in tubular body 53 radially to intramedullary expansion, close thereby close delivery pipe 51(control valve 52).At this moment, the wing 54a of film 54 abuts against each other, thereby guarantees the closure of the delivery pipe 51 of being closed by adjusting.Subsequently, manifold valve 57 and flushing valve 17 are opened to begin to supply with flushing water.Secondly, when water level detector (for example, flow-rate sensors 16, water level sensor 61 or pressure inductor 62) thus the water surface that detects flushing water W has been raised to one to be higher than the water yield that the water level of the highest part of trap imports with predetermined altitude and to reach a scheduled volume C who is enough to be full of trap 14c
1The time, manifold valve 57 is just closed.
When finishing aforesaid operations, arm 56 is opened, and delivery pipe 51 is closed, thereby is discharged from the air of trap 14c, but flushing water infeeds, thereby trap 14c fills fully with flushing water.
Subsequently, water inlet valve 58 is opened, and the water in tubular body 53 is just discharged from water inlet 53.Film in control valve 52 54 just radially outward moves like this, and control valve 52 is opened.When control valve 52 is opened, just discharge at the flushing water of staving part 14a, but trap 14c still is full of flushing water.Its result begins effective siphonage, thereby can discharge flushing water effectively.
When the flow velocity of flushing water reaches a predetermined value C
2The time, flushing valve 17 is just closed, thereby finishes flushing operation.
As mentioned above, according to second embodiment, when the air at trap 14c place was discharged, trap 14c was full of flushing water, thereby the control valve unlatching causes effective siphonage this moment with waste discharge, therefore finishes effective flushing operation with the less water yield.
As mentioned above, when enforcement was of the present invention, just washing water quantity that can be less washed the lavatory effectively.
Claims (11)
1, a kind of flusher of lavatory, comprise a flushing water supply source, a flushing water feeding pipe and a flushing valve that is installed in the said flushing water feeding pipe that is communicated with said flushing water supply source and lavatory, it is characterized in that: said flushing valve is connected with the current velocity controller that a said flushing valve of control is opened or closed, in a flushing operation, flushing water is imported the said lavatory from said flushing water supply source according to one that changes flow velocity in time predetermined flow velocity spectrum
Said current velocity controller comprises the control device of a flushing valve drive unit and a said flushing valve drive unit of control.
2, as the lavatory flushing device that claim 1 limited, it is characterized in that: said flow velocity spectrum is to pass in time and reduce flow velocity.
3, as the lavatory flushing device that claim 1 limited, it is characterized in that: said flow velocity spectrum is to pass at any time and progressively reduce flow velocity.
4, as lavatory flushing device that claim 1 limited, it is characterized in that: said flow velocity spectrum is higher at phase I flow velocity in the time interval of a weak point, flow velocity in second stage velocity ratio phase I in a predetermined time interval is lower slightly, further reduces at phase III flow velocity in a predetermined time interval.
5, as the lavatory flushing device that claim 1 limited, it is characterized in that: said flow velocity spectrum comprises a pre-flushing flow process of flush toilet before use.
6, as the lavatory flushing device that claim 5 limited, it is characterized in that: said lavatory is provided with one and surveys the seat induction installation that the people sat thereon and began said pre-flushing flow process.
7, as the lavatory flushing device that claim 1 limited, it is characterized in that: said flow velocity spectrum comprises can be according to the type of service in lavatory and selected a flow process and flow process with low flow velocity flushing with the high flow velocities flushing.
8, as the lavatory flushing device that claim 1 limited, it is characterized in that: said flushing valve drive unit is provided with an actuator that makes said flushing valve open or cut out.
9, as lavatory flushing device that claim 1 limited, it is characterized in that: said control device comprises the said flow velocity spectrum of the storing apparatus of a predetermined flow velocity spectrum of storage within it and a response storage and produces the microprocessor of control signal that said control signal is sent to the actuator of said flushing valve drive unit.
10, as the lavatory flushing device that claim 1 limited, it is characterized in that: the actuator of said flushing valve drive unit comprises that a post that is connected to flushing valve and one are around the outer cylinder surface setting of said post and start the piezo-element actuator of said post.
11, as lavatory flushing device that claim 1 limited, it is characterized in that: the actuator of said flushing valve drive unit comprises a bar-shaped external thread piece that is connected to said flushing valve, one can with the nut piece of said bar-shaped external thread piece engagement and the drive unit of a said nut piece of rotation.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP49993/88 | 1988-03-02 | ||
| JP63049993A JPH01223230A (en) | 1988-03-02 | 1988-03-02 | Washing device for toilet bowl for feces |
| JP117460/88 | 1988-05-13 | ||
| JP130949/88 | 1988-05-27 | ||
| JP13094988A JP2575182B2 (en) | 1988-05-27 | 1988-05-27 | Toilet bowl cleaning equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1036240A CN1036240A (en) | 1989-10-11 |
| CN1021841C true CN1021841C (en) | 1993-08-18 |
Family
ID=26390425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89101092 Expired - Fee Related CN1021841C (en) | 1988-03-02 | 1989-03-02 | Water closet flushing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1021841C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8566971B2 (en) | 2009-11-17 | 2013-10-29 | Kohler Co. | Toilet flushing assembly and sequence |
| CN102465567A (en) * | 2010-11-19 | 2012-05-23 | 赵秋娴 | Full-automatic integrated intelligent pedestal pan |
| CN102966159B (en) * | 2011-08-30 | 2015-03-25 | 联盟服务国际公司 | Water-saving management system and water-saving management method for sanitary equipment |
| CN104264759B (en) * | 2013-09-11 | 2016-07-06 | 科勒(中国)投资有限公司 | The water yield control system of toilet and control method |
| CN109024799A (en) * | 2018-07-17 | 2018-12-18 | 苏州韵之秋智能科技有限公司 | A kind of water-saving method of water closet |
| CN114893417B (en) * | 2022-05-10 | 2024-08-27 | 深圳麦格米特电气股份有限公司 | Water pump control method, toilet bowl and readable storage medium |
-
1989
- 1989-03-02 CN CN 89101092 patent/CN1021841C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1036240A (en) | 1989-10-11 |
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