JP2001304101A - Electromaghnetic pump of pulsationally pressurizing device for wash infusion - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electromagnetic pump of a pulsationally pressurizing device for wash infusion capable of reducing the generation of noise during operation of an electromagnetic pump and completely discharging residual infusion during a stop of the electromagnetic pump. SOLUTION: An electromagnetic plunger 38 slidably reciprocating in a tube column cylinder 39, surrounded by an electromagnetic coil 34, through interaction of magnetic force and a repulsion force of a spring is provided with a check valve. By superimposing on a static pressure regulated by a given value of liquid on the suction side of a pump, an intermittent pulse current is energized on the electromagnetic coil and the electromagnetic plunger is actuated to pressurize the infusion. Constitution is so effected that by exerting a waveform microimpact pulsation, a jet is discharged from the discharge side. A check valve with which the electromagnetic plunger is provided is a duckbill valve having a normally open opening part 51 which is closed only during the discharge pressure stroke of a pump and holds a discharge pressure and a flow rate in a given range and opened wide enough to suppress noise during operation of the pump to a value not exceeding a given value. A small orifice 53 is situated downstream from the duckbill valve instead of the discharge valve.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic pump for a pulsating and pressurizing apparatus for washing and pouring, which mainly contains a washing agent used for a warm water washing toilet seat, a face washing health washing massage and the like. Because it is a positive displacement pump, it suppresses the pulsation of the discharged liquid and focuses on smoothing it.The conventional electromagnetic plunger pump that deals with this is, conversely, wavy, soft and shocking, that is, pulse-like stimulating. Pulsation is caused to be ejected from a discharge port such as a nozzle, and for example, at the time of stoppage of the operation of the pump contributing to enhancing the washing effect by the washing and pouring, at least the remaining residue on the entire downstream side including the inside of the main body of the pump. The present invention relates to an internal structure of an electromagnetic plunger pump provided with a vent opening / closing check valve for discharging a liquid downstream by a head.

[0002]

2. Description of the Related Art Conventionally, the above-mentioned flush toilet seat is directly connected to a tap water and uses its water pressure or is supplied from a water tank by a pump.
JP, JP-A-9-112417 and Japanese Utility Model Laid-Open No. 4
Although the technology disclosed in -9798 is known,
In any case where an electromagnetic pump is used, an accumulator is provided on the discharge side of the pump as means for smoothing the discharge pulsation. The discharge pressure when used for a flush toilet seat is regulated to about 100 KPa. In the case of water supplied from the main stream of the flush toilet seat, the discharge pressure of the water is suppressed to approximately the same level as this, and if necessary, a pressure reducing valve,
If pressure is insufficient, a booster is also used.

That is, for example, when pumping up fresh water such as tap water from an underground water storage tank to a water supply tank installed on the roof of a middle- and high-rise building, and then distributing it to equipment downstairs, the potential head is When the static pressure is large and the static pressure is large, the pressure is reduced. Conversely, when the head is small and the pressure is insufficient, it is necessary to increase the pressure and maintain the discharge pressure.

When receiving tap water directly from a water pipe,
Tap water, which is pressurized and distributed by a pump, has a dynamic pressure, but its pulsation is smoothed to such an extent that it is hardly felt. Good.

[0005] However, the rinsing liquid or rinsing water containing a rinsing agent used in the conventional lavatory toilet seat has almost all pulsation smoothed, and the same is true of the rinsing supplied by a pump. The configuration that overlaps with the conventional static pressure of fresh water such as tap water on the inflow side, and further increases the cleaning effect by applying a pulse-like wavy micro-pulsation pulsated by an electromagnetic pump. Japanese Patent Application No. 11-proposed earlier by the applicant
There is a prior art described in Japanese Patent Application No. 260480 and Japanese Patent Application No. 11-359468, which describe an electromagnetic pump for a rinsing liquid pulsation generator.

[0006] The above prior art patent application discloses that the cleaning effect is excellent and the water can be saved compared with the prior art in the cleaning toilet seat, and that the liquid is reduced in size and weight and the residual liquid when the pump is stopped after using the cleaning toilet seat. About the discharge processing of
Japanese Utility Model Laid-Open No. 4-156976 and Japanese Utility Model Laid-Open No. 4-977982 are described, and there is a description in which the superiority is described in comparison.

However, the prior art still has the following problems. Japanese Patent Application No. 11-26
The so-called residual liquid at the time of stopping the pump in the prior art described in the specification of the '0480 patent is cooled, the cooled residual liquid is first discharged at the time of restart, and when the human body part is touched at the end of use of the cleaning toilet seat, it becomes cold. There is a description of a drain valve for discharging residual liquid to prevent discomfort and to prevent the residual liquid from freezing when the pump is stopped in a cold region and causing damage to the equipment.

In this water drain valve mechanism, the valve element, which is associated with the valve seat, presses and closes the valve seat by a coil spring made of a shape memory alloy when cleaning water having a predetermined temperature range exists on the discharge side of the pump. When the pump is stopped, the washing water is discharged through the nozzle, and when the washing water is cooled when the pump is stopped, the coil spring of the shape memory alloy contracts and the valve body separates from the valve seat and opens. From which the residual liquid is pushed out of the pump. In addition, the configuration of other drainage valves, such as one using an electromagnetic valve for draining, is described.

The prior art described in the specification of Japanese Patent Application No. 11-359468 is disclosed in Japanese Patent Application No. 11-2604.
In the above-described water drain valve of the '80 patent application, when the pump is stopped, the valve element of the check valve built in the electromagnetic plunger is pressed and closed by the repulsive force of the valve spring at the valve seat, so that the upstream of the electromagnetic plunger, That is, the residual liquid in the inflow path of the pump is not discharged to the outside of the pump, and the residual liquid in the inflow path of the pump up to the hot water heater is cleaned at the start of cleaning.
Since the cold water is discharged from the nozzle as well as causing discomfort as described above, the device may be frozen in a very cold season and the device may be damaged, so the valve spring is omitted, and the check is performed except at the time of the discharge operation of the pump. The structure of the check valve mechanism relating to the fact that the valve body of the valve opens and releases the valve seat, the elimination of the water drain valve mechanism, and the provision of a vent opening / closing check valve mechanism at the inflow-side main portion or the inflow-side path of the pump. The main point is that the residual liquid is easily discharged by a head.

[0010]

SUMMARY OF THE INVENTION The above-mentioned Japanese Patent Application No. Hei.
The fact that the prior art described in each of the patent applications of Japanese Patent Application No. 260480 and Japanese Patent Application No. 11-359468 is superior to that of the conventional flush toilet seat is explained in the above specification. This is not repeated. However, the configuration described in Japanese Patent Application No. 11-359468, which is an improvement of the prior art described in Japanese Patent Application No. 11-260480 for the above-described reason, is shown in FIG. As shown in a longitudinal sectional view in which a partial cross section is enlarged, a valve body 242 which is housed in a valve cylinder 241 of a check valve mechanism 250 built in an electromagnetic plunger 238 and engages with a valve seat 243 is a valve. The valve 242 presses and closes the valve seat 243 with the discharge fluid pressure of the fluid only in the discharge stroke of the pump without providing a valve spring to be pressed and closed in the seat 243. Since the valve 243 is opened, the residual liquid when the pump is stopped is opened by opening a ventilation opening / closing valve 202 provided on the inflow side of the pump main body 220 or upstream of the inflow path, a solenoid valve, or a valve mechanism for ventilating the pump. Then, an orifice 253 provided in place of the discharge-side check valve passes through a discharge port 224 of the discharge joint 223, and is discharged outside from a pipe (not shown) by a head from a nozzle (see FIGS. 4 and 15). Is discarded.

The names of the other members in FIG. 6 indicate the embodiment of the present invention, and are the same as those of the two-digit number in FIG. Therefore, the description is omitted.

However, in this technique, the elimination of the valve spring means that the valve body 242 is made of synthetic rubber during the operation of the pump, but the valve body 243 and the valve cylinder 241 are made of synthetic resin. When the contact / separation occurs, it may cause irregularities, generate unexpected noise, and reverberate throughout the washing toilet seat equipped with this electromagnetic pump, resulting in a harsh and disturbing sound when cleaning the human body after use. Again, with the intention of avoiding the above, the technical scope of the prior art described in the patent specification of Japanese Patent Application No. 11-260480 is again shown in FIG. Going back, it is currently in production.

However, in this technique, although the generation of noise during the operation of the pump is reduced as described later, the discharge of the residual liquid when the pump is stopped is incomplete, leaving a problem. In the embodiment shown in FIG. 5, the check valve mechanism 1
The 50 valve seats 143 are made of a synthetic resin, and are housed in a valve cylinder 141 made of a synthetic resin, and the valve body 142 pressed and closed by the valve seat 143 by a valve spring 145 is made of a synthetic rubber. .

The discharge joint 123 of the pump has a discharge port 12
4 and a drain valve mechanism 160 are provided. The drain valve mechanism 160 includes a drain valve body 161 that presses and closes the drain valve seat 162 with the discharge pressure during operation of the pump.
24, the discharge pressure is lost when the pump is stopped, and the drain valve 161 is connected to the drain valve seat 1.
62 is opened, and the residual liquid is discharged to the outside mainly from the drain port 163 as shown by an arrow e. The names of the other members in FIG. 5 are the same as those of the two-digit number of the code in FIG.

[0015]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems.

[0016]

To solve the above-mentioned problems, an electromagnetic pump according to the present invention is slidably reciprocated in a tube cylinder surrounded by an electromagnetic coil by an interaction between a magnetic force and a repulsive force of a spring. An in-line pump having an electromagnetic plunger equipped with a check valve, wherein the electromagnetic coil is adapted to the intended use by overlapping the static pressure regulated to a substantially predetermined value of the liquid on the inflow side. The electromagnetic plunger is actuated by applying a predetermined intermittent pulse current to pressurize the liquid to give a wavy micro-shock pulsation, thereby ejecting a jet from the ejection side, and preparing the electromagnetic plunger. The check valve is closed only during the discharge pressurization stroke of the pump,
A duckbill valve having a normally open opening that keeps a predetermined range of discharge pressure and flow rate and keeps the noise during pump operation within a range not exceeding a predetermined value. A small-diameter orifice is provided in the flow passage instead of the check valve.

Further, the electromagnetic pump for the rinsing liquid injection pulsation pressurizing device according to the present invention is provided on the inflow side of the main body of the pump to the electromagnetic plunger or on the upstream side of the inflow side path when the operation of the pump is stopped. A vent opening / closing check valve is provided for venting the residual liquid on the entire downstream side including at least the main body of the pump on the inflow side path and discharging the residual liquid to the downstream side by a head.

Further, the electromagnetic pump for the rinsing liquid injection pulsation pressurizing device according to the present invention is characterized in that the inflow side piping and other attached members are vibrated by the inflow side pulsation caused by the pulsation at the time of the suction and discharge action of the electromagnetic pump. In addition, an accumulator for suppressing noise and enhancing discharge efficiency is integrally provided on the inflow side of the main body of the pump.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. Before that, first, as an application example of the embodiment, the sanitary warm water washing toilet seat (two points in the figure) Piping connection configuration (within the dashed line frame)
This will be explained below. Water that has flowed in and pumped in from a water pipe or a fresh water well, etc., is stored in an underground water storage tank 4, for example, of a middle-high-rise building via an on-off valve 3, and then from the roof via a pump 6, a pump on-off valve 7, and a water pipe 8. The water enters a water supply tank 9 installed in a water supply pipe, and is supplied with water through a water supply pipe 10. At this time, when the water head h on the top floor or the like is small and the water pressure is lower than, for example, 50 KPa required in this case, the pressure is raised by the booster pump 16, and when the water head H is larger than the above, the pressure is reduced by the pressure reducing valve 11. Then, in view of the flow resistance of piping and equipment, the pressure is set higher than the required water pressure.

In some cases, water is directly received from the water pipe 17.
Next, the solenoid valve 12 which is the following accessory member of the cleaning toilet seat
Then, the hot water is heated by the instantaneous boiling type hot water heater 13 to the above-mentioned 30 to 40 ° C. hot water temperature, and this hot water enters the electromagnetic pump 1 (P) of the present invention as shown by an arrow a in FIG. The cleaning water pressurized by the application of the intermittent pulse current set in accordance with the use conditions described below enters the nozzle cylinder 14 as shown by an arrow b with a wave-like pulsation, The jet is discharged from the nozzle 15 to perform cleaning, massage, and the like of the human body part.
At this time, the instant boiling hot water heater 13 and the electromagnetic pump 1
A flow control valve 18 may be provided between (P).

The above-mentioned instantaneous hot water heater 13
Does not require a hot water storage tank, which not only saves space in the equipment, but also does not require electric power for keeping and maintaining the hot water, and is energy saving. The hot water heater 13 includes a feed water temperature sensor for detecting a feed water temperature, a tap water temperature sensor for detecting a tap water temperature, a water amount sensor for detecting a water amount, a unit for setting a set temperature, and the like. It is necessary to have a function to control. It does not matter that the above-mentioned flush toilet seat is operated by a user's operation.

Next, an embodiment of the electromagnetic pump of the present invention will be described with reference to FIG. FIG. 1 is an enlarged vertical sectional view showing a partial cross section. The main part of the main body 20 which is inserted into the axial hole of the electromagnetic coil 34 wound around the bobbin 33 and fits the inside of the tube cylinder 39 surrounded by this into the upstream end thereof, and the downstream side thereof An electromagnetic plunger 38 is provided between the holding spring 40 and the return spring 36 so as to be slidable in a reciprocating manner and has a check valve mechanism 50 between the magnetic head 35 fitted to the end portion and the holding spring 40 and the return spring 36. When the pulsed intermittent current is energized to the electromagnetic coil 34, the reciprocating motion is generated by the intermittent magnetic force generated there and the repulsive force of the return spring 36.

At the downstream end of the tube cylinder 39,
A discharge joint 23 having a discharge port 24 is connected. The upstream end of the tube cylinder 39 is fitted and connected to the body 20 integral with the inflow joint 21 having the inflow port 22. The electromagnetic coil 34 is surrounded by a yoke 31 and the magnetic head 35
A part of the magnetic circuit is formed together with the annular magnetic path 37 fitted around the upstream end portion of the tube cylinder 39. Further, the discharge joint 23, the yoke 31, the bobbin 33 of the electromagnetic coil 34, the annular magnetic path 37, and the main part of the main body 20 are all sandwiched and fixed by the outer frame iron 32.

An accumulator 25 is provided at a main portion of the main body 20 near the inflow port 22. The accumulator 25 is fixed to a main part of the main body 20 by pressure-fixing a buffer plate 26 of an operation diaphragm by screwing a lid 29 with a mounting screw 30 via a buffer plate retainer 27, and a pressure-receiving back portion thereof. An accumulator spring 28 is provided to recover the pressure receiving dent of the buffer plate 26. The spring 28 and the buffer plate 2
6, a spring seat may be interposed.

Next, the check valve mechanism 50 provided in the electromagnetic plunger 38 is formed of elastic and flexible synthetic rubber, for example. It is a duck bill valve represented by a plan view. A duckbill valve is known, which is cut at a flexible flat tip end of a cylindrical portion and is normally closed, and is opened by the pressure when a fluid passes from the inside of the cylinder.

However, in the electromagnetic pump according to the present invention,
When the operation is stopped, that is, for example, at the end of use of the flush toilet seat, it is impossible to discharge the residual liquid in the toilet seat device including the inside of the pump because the head of only a few centimeters does not open the duck bill valve. In addition, when the toilet seat is not used for a long time, the opening of the duck building is blocked and released by the cleansing water, disinfectant or water scale due to adhesion or sticking, which may cause problems when reused, that is, when the pump is restarted. There is also a problem that there is.

Therefore, the duckbill valve employed in the check valve mechanism 50 of the present invention has a flexible opening 51.
Is closed by the discharge pressure of the fluid during the pressurization and discharge stroke of the pump, and is always open, that is, when the fluid flows in and when the operation of the pump is stopped, and to the electromagnetic coil of the electromagnetic pump that is determined in advance according to the application. Under the energized pulse current, a predetermined range of flow rate and discharge pressure and a slit-shaped groove width S and a width W in which noise during operation of the pump, which is an important subject in the present invention, particularly do not exceed a predetermined value. Is an opening whose dimensions are determined including the results of the experiments described below.

When the corners of the opening 51 which is opposed to each other with the width W and the groove width S are formed in an arc shape with a semicircle having a diameter equal to the groove width S, fatigue deterioration damage due to distortion at the time of opening and closing the valve is reduced. Increase valve durability. Even if the pump is operated intermittently and the total operation time exceeds 1000 hours, no abnormality has occurred in its operation.

A discharge-side check valve is not provided downstream of the check valve mechanism 50. Instead, at the downstream end of the magnetic head 35, not only the inlet 22 but also the cylindrical portion of the duck bill valve is provided. An orifice 53 having a smaller inner diameter than the inner diameter was provided. The reason is that the water pressure of the plus head is originally applied from the inflow side of the pump, and at the time of the return stroke of the electromagnetic plunger, there is a flow resistance due to the orifice 53 having a relatively small diameter, and the backflow from the discharge port 24, that is, the backflow from the downstream side This is because there is little effect.

As an embodiment of the present invention, the electromagnetic pump shown in FIG. 1 is of a so-called inner magnetic path type, which is adopted because of the reason that the present applicant has previously proposed Japanese Patent Application No. Hei 11 (1999) -197686. −
As described in the specification of Japanese Patent No. 26048, a so-called magnetic leakage type electromagnetic pump may be used as long as the pump is not large, and the configuration of the present invention is effective. It falls within the range.

Regarding the problem to be solved by the present invention, a drain valve is not separately provided for discharging the residual liquid after the pump is stopped, as in the prior art shown and described in FIG.
The ventilation opening / closing check valve is opened when the pump is stopped, and the electromagnetic opening / closing valve 12 is communicated with the atmosphere on the inflow side of the pump after closing, that is, the upstream side path. It is discharged from the nozzle 15.

The vent valve 2 is integrally provided, for example, adjacent to the inflow port 22 of the main body 20 of the electromagnetic pump 1, or from the hot water heater 13 to the inflow joint 21 of the electromagnetic pump 1, What is necessary is just to provide for an upstream path. It is also possible to discharge the residual liquid by providing an air inflow opening / closing valve having the function thereof or an air introduction mechanism having a function and effect similar to that of the negative pressure release valve before or after the flow control valve 18 or at the flow control valve 18 itself. Becomes

That is, a wedge-shaped arc-shaped groove is formed in the outer periphery and / or bottom surface of a cylindrical plug connected to a shaft rod as disclosed in Japanese Utility Model Publication Nos. 40-33960 and 43-18709. The plug (pattern) is rotated by, for example, a stepping motor so that the flow rate can be adjusted by a flow rate adjusting valve inserted into a cylinder. It may be attached to the valve.

Further, the ventilation opening / closing valve 2 is provided by
6, the float or the liquid pressure due to the buoyancy of the liquid on the inflow side of the pump incorporated in its body 220 adjacent to the inflow joint 221 of the prior art electromagnetic pump 1 shown in FIG. When the pump is operated, the valve body closes the valve seat communicating with the atmosphere, and when the pump is stopped, the liquid on the inflow side and its pressure are extinguished. .

The ventilation opening / closing valve 2 may be an energized closing solenoid valve that is closed when the pump is operating and is opened when the pump is stopped, or is closed when the pump is operating and remains closed when the pump is stopped. A solenoid valve that is energized and opened with a timer only during liquid discharge may be used.

When the washing liquid is ejected from the nozzle 15, the static pressure and the discharge pressure of the pump cause the holding portion of the nozzle 15 from the nozzle cylinder 14, for example, the plunger whose plunger exceeds the repulsive force of the spring. In the figure, the nozzle 15 is displaced downward, or the combination of the wheel and the band or the gear and the rack is opened by opening the nozzle 15 from the main part of the nozzle cylinder 14 by driving a stepping motor, etc. The cleaning liquid is ejected by changing the nozzle 15 having a diameter corresponding to the purpose such as cleaning of a human body part (video bidet) and the injection angle thereof.
Of course, the injection pressure and flow rate in this case are
For example, the voltage, period, duty ratio, and the like of the pulse current to the pulse current can be changed by conversion. When the nozzle 15 is welfare to the original position when the pump is stopped, i.e. drop h ₁ at the time of the residual liquid discharge are often usually 4-5 cm.

[0037] Note that attached the electromagnetic pump 1, for example, when cleaning spaces to be structurally the drop h ₁ of the toilet seat is not the after pumping stops closing the electromagnetic valve 12, a short time the electromagnetic pump 1 of a given It is also possible to discharge the residual liquid from the nozzle 15 to the outside by operating the power supply. In this case, when the electromagnetic pump 1 is the one shown in FIG. 1, the electromagnetic plunger 38 extends its stroke length due to a decrease in flow resistance as the amount of liquid decreases, and the magnetic head 35
Noise and damage due to the blank hit phenomenon colliding with
To avoid this, the electromagnetic coil 34 is used to suppress the magnetic force.
Need to regulate the current to the. Alternatively, a magnetic leakage type electromagnetic pump which does not easily cause the above-described idling phenomenon may be used.

Next, the features of the operation of the electromagnetic pump of the present invention will be described. As described above, for example, the pressure regulated in advance from the inflow side to a predetermined value by a pressure reducing valve or the booster 11 (in a high-rise building such as a building or an apartment,
The liquid having a static flow pressure of more than one must open the electromagnetic on-off valve 12 depending on the state of water use due to the number of faucets in the water distribution system and the use of the equipment. The electromagnetic pump 1 enters the washing toilet seat, is heated by the instantaneously hot water heater 13, and if necessary, passes through the flow control valve 18 and the ventilation opening / closing valve 2.
From the inflow port 22 of the inflow joint 21 as shown by the arrow a.
Enter 0.

The pressure of the liquid entering the electromagnetic pump 1 is 0.1.
08 MPa. Although the standard inlet pressure of the liquid when entering the electromagnetic opening / closing valve 12 of the washing toilet seat is regulated to 0.15 MPa, the pressure at the inlet 22 of the electromagnetic pump 1 is reduced to 0.08 MPa by the internal flow resistance. It has fallen. The intermittent pulse current energizing the electromagnetic coil 34 is converted from direct current from a commercial AC power supply 100 V to direct current, and its peak value is √2 times, and the frequency is 71.times. During local ordinary washing after toilet use in the toilet seat. The 4 Hz cycle is 14 mSec.

It should be noted that the above-mentioned local cleaning is soft and soft (So
ft) At that time, the frequency of the energizing current was set to, for example, 76 Hz, and the other body part washing (Bidet) provided in many of such hot water washing toilet seats was made softer, for example, to 99.9 Hz. This frequency was determined by a number of experiments, but is not limited to this. The conduction period during the cycle is 5 mSe
c.

As described above, the inlet 22 of the electromagnetic pump 1
The liquid having a static pressure flowing from the electromagnetic coil reciprocates the electromagnetic plunger 38 by the interaction between the magnetic force generated by the pulse current energizing the electromagnetic coil 34 and the repulsive force of the return spring 36, and performs a pumping operation. Passes through the inside of the pump and is discharged from the discharge port 24 of the discharge joint 23 as shown by an arrow b, and is discharged from the nozzle 15 through the nozzle cylinder 14,
Performs a cleaning action.

FIG. 9 is a pressure waveform diagram in which the electromagnetic pump 1 is pressurized so as to overlap with the above-mentioned inflow pressure at the time of normal cleaning (Or).
Shown in In the figure, the horizontal axis represents the period mSec, the vertical axis represents the discharge pressure PMPa, and the peak value is 0.177 MPa (177 KP).
a). For other operations of the electromagnetic pump 1,
Needless to say, the description is omitted because it is described in the above-mentioned prior art document.

Next, the definition of the dimensions of the opening 51 of the duckbill valve of the check valve mechanism 50 will be described with reference to experimental data shown in Table 1. In this case, the required flow rate of the liquid is 430 ± 20 ml mL / min,
Standard discharge pressure ≧ 0.147MPa, pump operation sound d
Provided that the B and A scales are as small as possible and that the residual liquid discharge is good, the width of the slit of the opening 51 is kept constant at 2.3 mm, and the dimension of the groove width S is set to 0.00,
0.34, 0.52, 0.71, 0.85, 1.23m
m, the check valve mechanism 50 of the duckbill valve
A comparison experiment was conducted between the electromagnetic pump A shown in FIG. 1 and the prior art pump B shown in FIG. Table 1 shows the results.

[0044]

[Table 1]

The operation noise of the pump was measured at night in an RC structure building in a residential area adjacent to a commercial area without using an anechoic room in consideration of a practical environment. Although the operating noise of this pump is designed to be quite low, the inside of the toilet close to the closed room and the vicinity of the door may be quite unpleasant and may have some reverberation. It seems to happen. At this time, the measurement position on the 28 dB A scale of the background noise was 150 mm in the horizontal direction of the pump, and at such a short distance, the position was 2 to 2 mm smaller than the 52 dB A scale of the electromagnetic pump of the prior art B.
It is 2.5 dB lower and almost no unpleasant noise is felt.

Each of the electromagnetic pumps A of the present invention satisfies the prescribed conditions such as the discharge flow rate, pressure, noise, residual liquid discharge status, etc. 4 having an S dimension of about 0.52 or 0.71 mm may be selected. The normally open opening 5 of the duckbill valve 50
Increasing the area of the electromagnetic plunger 1 is too large.
8, the flow resistance is small and the efficiency is good when the fluid flows into the tube cylinder 39 including the return stroke. On the other hand, the efficiency decreases due to leakage at the time of the discharge operation in the forward stroke. Since the degree of expansion and contraction at the time of opening and closing the valve body increases, the life is shortened due to fatigue. Therefore, it is necessary to avoid increasing the opening area more than necessary, that is, the groove width dimension S.

The measured values of the soft washing S _o and the bidet washing Bi are shown as reference flow rates, and both satisfy the above conditions. In the case of these washings, since the diameter of the nozzle is greatly changed, and the frequency of the energizing current to the electromagnetic coil 34 is also largely converted as described above, the discharge pressure is suppressed, and the discharge flow rate is increased. , As a whole soft and soft cleaning.

FIG. 7 is a discharge pressure diagram at the time of normal cleaning in which the horizontal axis represents the dimension mm of S of the electromagnetic pump A of the present invention in Table 1 and the vertical axis represents the discharge pressure MPa.

FIG. 8 shows the ordinary cleaning Or and the soft cleaning So of the electromagnetic pump of the present invention in Table 1 in which the horizontal axis of A of the electromagnetic pump of the present invention has the dimension m / m of S and the vertical axis has the discharge flow rate of ml / min. FIG. 10 is a flow rate characteristic diagram of bidet washing Bi. The one with a dimension of S of 0.000 m / m is a conventional duckbill valve without a normally open opening. The configuration and operation of the ventilation on-off valve 2 relating to the residual liquid discharging process are as described above.

Next, the necessity of providing the accumulator 25 integrally with the main body 20 on the inflow side of the pump, which was not necessary in the conventional electromagnetic pump, will be described below. As described above, the electromagnetic pump according to the present invention provides a pulsed pulsation and jets out from a nozzle to enhance the cleaning effect, unlike the conventional cleaning water pump which needs to smooth the discharge pressure. Therefore, an accumulator is not required on the discharge side. However, regardless of whether a positive static pressure is applied to the inflow side, at the time of the forward stroke due to the attraction of the energized magnetic force to the electromagnetic coil 34 of the electromagnetic plunger 38, the suction action to the tube cylinder 39 accompanying the discharge action also occurs. At the same time, the pump inlet side generates back pressure due to pulsation, and propagates and vibrates in the piping system connected to the inflow side. The accumulator 25 is provided with an accumulator 25 for absorbing pulsation. The accumulator 25 has a function of damping the pulsation of the buffer plate 26 of the working diaphragm and a function of discharging the voltage absorption component. It was experimentally confirmed that a pressure increase of 20 KPa was applied. Accumulator 25 integrally provided on the inflow side of main body 20
As a result, the discharge performance of the pump is improved.

Thus, the washing effect is enhanced by ejecting the washing water by overlapping the pressure applied to the inflow side of the pump with the discharge pressure of the pump in a wave-like pulsating manner. It was proved by a number of experiments that 40% of what required about 1.1 liters at a time was sufficient, and the water saving effect was obtained at the same time.

As described above, the electromagnetic pump according to the present invention has been described with a warm water flush toilet seat as an example of its use.
The present invention is not limited to this, and as described above, it is conceivable to use such as facial cleansing, oral hygiene cleaning, insurance massage, cleaning including addition of a cleaning solution to a container.

Further, in addition to the above, a liquid such as a chemical solution and / or fresh water to which the chemical solution is added is discharged by the same pumping action as described above, and is used for sterilization, disinfection, washing, etc. of a human body part such as a hand or a device. Can be done.

[0054]

As described in detail above, the electromagnetic pump for the pulsating pressurizing device for washing and pouring according to the present invention has the following effects.

(A) As set forth in claim 1, the electromagnetic coil is overlapped with a static pressure substantially free of pulsation, which is regulated to a substantially predetermined value of the liquid entering from the inflow side of the pump. By actuating the electromagnetic plunger by energizing the intermittent pulse current set according to the application of the above, it is configured to pressurize this to give a wavy shock pulsation and discharge the jet from the discharge side, for example, this pump After using the toilet seat for sanitary warm water washing and the like, the washing effect was enhanced when used for discharging the washing water in the local part of the human body, and the washing water was suppressed to about 40% of the conventional one, thereby saving water.

(B) The check valve provided in the electromagnetic plunger is closed only when the pump is operated to discharge and pressurize, the discharge pressure and the flow rate in a predetermined range are maintained, and the noise during the operation of the pump is reduced to a predetermined value. The duckbill valve has a normally open opening that does not exceed the threshold and is within the range that is not harsh.

(C) The duckbill valve of the inflow-side check valve provided on the electromagnetic plunger and the discharge-side check valve which should be normally provided downstream thereof are omitted, and a relatively small orifice is provided instead. In addition to simplicity, the residual liquid can freely flow to the discharge side when the pump is stopped, and the main part on the upstream side of the electromagnetic pump is closed during normal operation of the pump and liquid is injected from the discharge port. A vent opening / closing valve mechanism is provided which is opened when the discharge operation is stopped and stopped, and which discharges the remaining liquid such as the inside of the pump including the upstream side of the pump from the discharge port to the outside of the pump by a head drop. When this pump is used, for example, for discharging flush water from a sanitary warm water flush toilet seat, the flushing action is terminated, and when the discharge of the pump is stopped, the residual liquid is cooled, and this is injected into the human body at the time of restart. Cold Or remember the discomfort you feel, also Zantamari liquid frozen by no longer your it is also damage to the equipment at the time of cold.

(D) By disposing an accumulator provided with a buffer plate integrally with the inflow side of the main body of the pump, the suction action to the tube cylinder due to the discharge pulsation of the pump and the accompanying pulsation is also achieved. Therefore, when a back pressure due to the pulsation is generated also on the inlet side of the pump, the vibration caused by the pulsation propagating to the piping system connected to the inflow side is absorbed and a buffer action is performed. To prevent Further, as described above, the discharge capacity of the pump is enhanced by the effect of the energy storage effect of discharging the pressure receiving absorption during the buffering operation during the discharging operation.

(E) The electromagnetic pump of the present invention includes not only the above-mentioned sanitary warm water toilet seat washing water discharge but also facial cleansing, oral hygiene washing, insurance massage, addition of cleaning agent solution for dishes, injection, etc. It can be used for washing, etc. to enhance the washing effect and save water and water.

Further, in addition to this, a chemical solution or the like and / or a liquid such as fresh water to which the chemical solution has been added is discharged by the same pumping action as described above, and is used for sterilization, disinfection, cleaning, etc. of a human body part such as a hand or equipment. Is what you can do.

[Brief description of the drawings]

FIG. 1 is an enlarged longitudinal sectional view showing a partial cross section of an embodiment of an electromagnetic pump of the present invention.

FIG. 2 is an enlarged vertical cross-sectional explanatory view of a check valve mechanism provided in the electromagnetic plunger of FIG.

FIG. 3 is a plan view of an opening in FIG. 2;

FIG. 4 is a configuration diagram including a pipe connection of a warm water cleaning toilet seat in an application example of the electromagnetic pump according to the embodiment shown in FIG. 1 of the present invention.

FIG. 5 is an enlarged longitudinal sectional view showing a partial cross section of an embodiment of the prior art of the present invention.

FIG. 6 is an enlarged explanatory view showing a partial cross section of another embodiment of the prior art of the present invention.

FIG. 7 is a discharge pressure diagram of an electromagnetic pump with respect to a groove width of an opening of a duckbill valve according to the present invention.

FIG. 8 is a discharge flow rate diagram of the electromagnetic pump with respect to the groove width of the opening of the duckbill valve of the present invention.

FIG. 9 is a discharge pressure waveform diagram of an electromagnetic pump including the duckbill valve of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 electromagnetic pump 2 ′ ventilation opening / closing valve 20 main body 21 inflow joint 22 inflow port 23 discharge joint 24 discharge port 25 accumulator 26 buffer plate 33 bobbin 34 electromagnetic coil 35 magnetic head 36 return spring 37 annular magnetic path 38 electromagnetic plunger 39 tube cylinder 40 Holding spring 50 Check valve mechanism Duckbill valve 51 Opening 53 Orifice

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yasunori Chiba 5-23-13 Ikegami, Ota-ku, Tokyo Inside Taisan Industry Co., Ltd. (72) Inventor Toru Kobayashi 5-23-13 Ikegami, Ota-ku, Tokyo 3H069 AA01 BB02 CC04 DD31 DD45 EE04 EE07 3H071 AA01 BB01 CC21 CC35 DD03

Claims (3)

[Claims] 1. An in-line positive displacement pump having an electromagnetic plunger provided with a check valve, which is slidable and reciprocable by an interaction between a magnetic force and a repulsive force of a spring in a tube cylinder surrounded by an electromagnetic coil. Then, overlapping the static pressure regulated to substantially a predetermined value of the liquid on the inflow side, the electromagnetic coil is energized with an intermittent pulse current determined in accordance with its use to apply the electromagnetic plunger. It is configured to operate to pressurize the liquid, apply a wave-like micro-impact pulsation, and eject the jet from the ejection side.The check valve provided in the electromagnetic plunger is closed only during the ejection pressurization process of the pump. , A duckbill valve having a normally open opening that keeps a predetermined range of discharge pressure and flow rate and keeps noise during pump operation within a range not exceeding a predetermined value. Instead of a check valve Cleaning liquid pouring pulsating pressure device for electromagnetic pump, characterized in that an orifice diameter in the flow path. 2. An inflow side of the pump body reaching the electromagnetic plunger or an upstream side of the inflow side path, when the operation of the pump is stopped, the entire downstream side of the inflow side path including at least the pump body remains. 2. The electromagnetic pump according to claim 1, further comprising a ventilation opening / closing valve for venting the liquid and discharging the liquid downstream by a head. 3. A method for suppressing vibration and noise of piping on the inflow side and other attached members due to pulsation on the inflow side due to pulsation at the time of suction and discharge of the electromagnetic pump, and further increasing discharge efficiency. 3. The electromagnetic pump according to claim 1, wherein the accumulator is integrally provided on the inflow side of the main body of the pump.