JP2005262067A - Liquid jetting apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid jetting apparatus for jetting a liquid to carry out the washing of a human body, or the like, in which jetting performance of the liquid jetting apparatus is improved. <P>SOLUTION: A jet stream having large energy such as a pressure, high flow rate or high speed stream is intermittently jetted from nozzles 25 and 26 by controlling so as to interlock the action of a passage surface area changing means 23 for changing the passage surface area of the down stream side of a gas mixing means 21 with the action of the gas mixing means 21 to temporarily keep and release the pressure of a fluid incorporated with the pressurized gas in the gas mixing means 21. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a fluid ejection device that ejects fluid and performs human body cleaning or the like.

  Conventionally, as shown in FIG. 9, this type of fluid ejection device includes a plunger pump 4 as water physical quantity changing means between a hot water outlet 2 at the outlet of the heat exchanging means 1 and a nozzle discharge means 3. The power supply control means 5 controls this. And the heating means 6 of the self-temperature control function which supplies heat energy to the heat exchange means 1, the energization control means 8 which detects a user by the detection means 7 and starts heating in advance before the user's cleaning action, It was made up of. Here, a pre-filter 10 is provided between the heat exchanging means 1 and the water inlet 9 to prevent entry of foreign matters or the like (for example, see Patent Document 1).

In the above configuration, the rise time of the flow velocity is shortened by the intermittent operation of the plunger pump 4 to obtain a stronger acceleration.
JP 2001-279784 A

  However, in the conventional configuration, the rise of the flow rate is shortened by the opening and closing operation of the plunger pump 4, but the maximum flow rate after the rise is equal to the flow rate when the pump is opened and a high flow rate is obtained. There was a problem that it was difficult.

  SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and an object thereof is to intermittently eject a high energy jet such as a high pressure or a large flow rate, a high speed jet from a nozzle.

  In order to solve the above-described conventional problems, the fluid ejection device of the present invention includes a gas mixing unit for mixing gas into the flow path, and a gas mixing unit for mixing the gas obtained by the gas mixing unit into the fluid. It is provided.

  Thereby, by mixing the gas from the gas mixing section and temporarily increasing the internal pressure in the flow path, a high-energy jet such as a high pressure or a large flow rate or a high-speed jet can be intermittently ejected from the nozzle.

  The fluid ejection device of the present invention can obtain a comfortable cleaning feeling by intermittently ejecting a high energy jet such as a high pressure or a large flow rate or a high speed jet from the nozzle.

  The first invention controls the gas mixing means for mixing the pressurized gas into the fluid, the flow area changing means for changing the flow area, the operation of the gas mixing means and the operation of the flow area changing means. And a nozzle that ejects the fluid mixed with the gas by the gas mixing means, the fluid mixed with the air pressurized by the gas mixing means, When operated, pressure is accumulated when the flow area is temporarily reduced, and is released when the flow area is increased.At this time, a high-energy jet such as a high pressure, a large flow rate, or a high-speed jet is discharged from the nozzle. Can erupt. By mixing the air pressurized by the gas mixing means, the energy of the fluid is more efficiently accumulated and increased.

  In particular, according to the second invention, the fluid ejection device according to the first invention includes a pressure accumulating means upstream of the flow path area varying means, and the gas accumulating means is provided with the gas accumulating means. Therefore, pressurized air can be mixed into the fluid accumulated in the pressure accumulating means to increase the pressure of the fluid, and the pressure accumulation of the fluid can be performed more efficiently.

  In the third invention, in particular, the interlock control means of the first invention and the second invention is configured to control the flow area of the flow area variable means in a pulsating manner, whereby the accumulated pressure is Since it can be supplied to the downstream flow path in a pulsating manner, the jet flow from the nozzle can be ejected in a pulsating manner, and a jet flow in which the strength is changed smoothly can be obtained.

  In the fourth aspect of the invention, in particular, the interlock control means of the first and second aspects of the invention is accumulated by controlling the passage area of the passage area variable means to be opened and closed intermittently. Therefore, the jet flow from the nozzle can be ejected intermittently, and the jet flow emphasizing strength can be obtained.

  In the fifth aspect of the invention, in particular, the interlock control means of the fourth aspect of the invention is configured to control the ratio between the open time and the close time of the flow passage area of the flow passage area variable means, thereby controlling the ratio. The flow rate can be controlled.

  In the sixth invention, in particular, the interlock control means of the fifth invention is intermittently configured by adjusting the flow rate by controlling the ratio of the open time and the closed time of the flow passage area of the flow passage area variable means. Even during operation and pulsation operation, the flow rate can be controlled by controlling the ratio of opening and closing.

  In the seventh aspect of the invention, in particular, the interlock control unit of the fifth aspect of the invention continuously controls the ratio of the open time and the close time of the flow channel area of the flow channel area variable device, The flow rate can be changed, and the jet can be changed more smoothly.

  In the eighth aspect of the invention, in particular, the interlocking control means of the first to seventh aspects of the invention is controlled by reducing the number of operations of the flow area changing means less than the number of operations of the gas mixing means. It is possible to pressurize to a higher pressure by reducing the number of operations of the variable means.

  In the ninth aspect of the invention, in particular, the interlock control means of the first to seventh aspects of the invention controls the flow area by changing the operation time of the flow area variable means less than the operation time of the gas mixing means. The operating time of the variable means can be reduced and the pressure can be increased to a higher pressure.

  According to a tenth aspect of the invention, in particular, the interlock control means of the first to seventh aspects of the present invention controls the flow passage area of the flow passage area variable means to be small by the gas mixing means during operation of the gas mixing means. Pressurization is promoted and a high pressure can be obtained.

  In the eleventh aspect of the invention, in particular, the sanitary washing device provided with the fluid ejection device according to the first to tenth aspects of the invention can eject a fluid having a large energy by the fluid ejection device, thereby obtaining a satisfactory cleaning feeling. be able to.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the present embodiment.

(Embodiment 1)
FIG. 1 shows a block diagram of a sanitary washing device as a fluid ejection device according to a first embodiment of the present invention.

  In FIG. 1, a filter 14, a shut-off valve 15, a flow rate sensor 16, and an incoming water temperature sensor 17, in order from the upstream side, to a pipe 13 branched by a branching unit 12 from a main pipe 11 that supplies water as a fluid. The heating means 18, the tapping temperature sensor 19, the pressure accumulating means 20, the air pump 21 as the gas mixing means, the gas mixing part 22 for mixing the air from the air pump 21, and the opening and closing as the flow path area varying means The valve 23, the flow rate adjustment switching valve 24, the buttocks washing nozzle 25, and the bidet washing nozzle 26 are provided. And the interlock control means 27 which controls so that operation | movement of the air pump 21 and the on-off valve 23 interlock | cooperates is controlled, controlling the said components.

  About the human body washing | cleaning apparatus comprised as mentioned above, the operation | movement and an effect | action are demonstrated below. First, water is supplied from the main pipe 11 and flows into the shutoff valve 15 through the filter 14. When the cleaning operation is started, the shut-off valve 15 is opened, water is passed through the heating means 18 and heating is started. Then, the washing water heated by the heating means 18 is ejected from a predetermined nozzle, for example, a butt washing nozzle 25, while the flow rate is adjusted by the flow rate adjustment switching valve 24. At this time, the on-off valve 23 opens and closes while changing the flow path area of the flow path, and further operates the air pump 21 to send air from the gas mixing part 22 to increase the pressure in the pressure accumulating means 20 and increase the energy. The jet is ejected from the nozzle.

  FIG. 2 shows a cross-sectional view of the pressure accumulating means 20. Here, as shown in FIG. 2A, a check valve 31 is provided on the inlet side so that the washing water flows only in the direction of the arrow. Moreover, as shown in FIG.2 (b), a flow is interrupted | blocked from the pressure accumulation means inner side to the nonreturn valve 31 direction. Furthermore, the upper part is composed of a gas mixing part 22 for mixing air from the air pump 21, and the outlet side is connected to the on-off valve 23. Further, the material of the pressure accumulating means 20 is a silicon tube having stretchability and pressure resistance. Since the check valve 31 is provided when the on-off valve 23 is closed, the air in the pressure accumulating means 20 can be increased by mixing air with the air pump 21.

  Further, the on-off valve 23 is an electromagnetic shut-off valve mechanism as shown in FIG. 3 and changes the flow path area by changing the gap between the plunger 28 and the valve seat 29. And 30 is a water inlet, 31 is a water outlet, 32 is an electromagnetic coil part, 33 is a spring. Since such an electromagnetic valve is operated, its responsiveness is fast, and opening and closing can be performed intermittently at high speed. FIG. 4 shows the operation timing.

  4 to 6 show timing charts of the valve operation of the control valve 22 in the upper stage and the pressurizing operation of the pump 20 in the lower stage. As shown in FIG. 4, since the interlock control means 27 is operated in an interlocked manner so that the air pump 21 is operated at the timing of closing the on-off valve 23, the check valve 31 is connected to the pressure accumulating means 20, The internal pressure in the means 20 can be made higher. When the on-off valve 23 is closed, pressure is accumulated in the pressure accumulating means 20 by the air pump 21. When the on-off valve 23 is opened, the accumulated pressure is released, so that a strong jet is released from the nozzle.

  In FIG. 4, the pressurization timing of the air pump 21 is the same as the open / close timing of the on-off valve 23, but as shown in FIG. 5, the on-off valve 23 is opened / closed less than the number of pressurizations by the air pump 21. Accordingly, it is possible to increase the pressure accumulated. That is, since the pressure accumulating means 20 is closed during pressurization, the pressure in the pressure accumulating means 20 rises to a higher pressure. A strong jet pressure is obtained by opening the on-off valve 23 and releasing the pressure. In addition, although the number of times of pressurization and the number of opening / closing operations are described, the same holds true for the pressurization time and the opening / closing time. The pressure within 20 can be increased.

  In addition, as shown in FIG. 6, by changing the ratio of the opening time and the closing time of the on-off valve 23, the opening time is limited, and the amount of water that is the fluid flows is determined. That is, when the opening time of the on-off valve 23 is large, the flow rate increases, and when the opening time is short, the flow rate decreases. Using this principle, the flow rate can be adjusted by controlling the duty of opening and closing. In the configuration of FIG. 1, the flow rate adjustment is performed by the flow rate adjustment switching valve 24. However, since the flow rate flows intermittently, it is very difficult to measure the flow rate. Therefore, since the flow rate can be adjusted by controlling the open / close time of the open / close valve 23, the flow rate adjustment switching valve 24 can be operated only by switching the flow path, can respond quickly, and can adjust the temperature of the hot water. And so on can be accurately performed by changing the duty.

  Thus, the pressure in the pressure accumulating means 20 can be increased by associating and linking the operations of the air pump 21 and the on-off valve 23. And a very strong jet can be discharged by discharging | emitting the high pressure from a washing | cleaning nozzle, and a washing | cleaning effect can be improved significantly. Furthermore, when the human body is washed, it is possible to improve the feeling of washing as well as the strength of the washing power by mixing gas, thereby enhancing the satisfaction of the user.

  In addition, although the example which provided the non-return valve 31 in the pressure accumulation means 20 was demonstrated, even if it uses the on-off valve which is used for the flow-path area variable means instead of the non-return valve 31, it is a pressure by the air pump 20. If the same effect of increasing the pressure in the pressure accumulating means 20 can be expected by controlling the on-off valve to be closed, there is no problem.

  Moreover, although the example which used the silicon | silicone tube with a stretching property and pressure resistance was shown as a material of the pressure accumulation means 20, even if the material used the rigid body which does not have a stretching property, what kind of other things were used. There is no problem if the pressure in the pressure accumulating means 20 can be increased.

  Moreover, in order to make the operation | movement of the air pump 21 and the on-off valve 23 interlock | cooperate, it is necessary to take synchronization, but it is possible to acquire the same effect also when operating asynchronously. Further, it is well known that various jet forms are realized by combining the operation of obtaining the high pressure according to the present invention and the operation without using the conventional pressure accumulating means 20 and the on-off valve 23. Keep it.

  In the present embodiment, an example in which the air pump 21 is used upstream of the on-off valve 23 has been shown. However, by providing the air pump 21 downstream of the on-off valve 23, the air pump 21 can be operated when the on-off valve 23 is opened. The fluid can be accelerated by mixing the pressurized air by the air pump 21, and when ejecting from the nozzle, a fluid having a large energy can be obtained.

  In the present embodiment, the air pump 21 is used as an air mixing means for mixing pressurized air into the fluid. However, a fluid such as an oxygen cylinder is used to mix pressurized gas into the flow path. The energy may be increased.

(Embodiment 2)
FIG. 7 is a block diagram of the flow path area varying means used in the fluid ejection device according to the second embodiment of the present invention. The same reference numerals as those in the first embodiment denote the same operations and actions, and a description thereof will be omitted. The difference from the first embodiment is that the flow path area varying means does not move intermittently like an on-off valve, and the openings 34 and 35 provided in the valve shaft 33 as shown in FIG. The channel area is changed according to the area where the water inlet 37 and the water outlet 38 provided in the casing 36 overlap. Here, 39 is a motor.

  The operation and action will be described below. As the motor 39 rotates, the opening 34 and the water inlet 37 gradually overlap and the flow path area increases. Thereafter, the overlapping area decreases again from the most overlapping timing, and finally the overlapping is the smallest. By repeating such an operation, the water pressure in the pressure accumulating means changes in a pulsating manner as shown in FIG. As a result, the flow rate can be continuously changed, and a jet having a smoother change can be obtained. Therefore, when it is used for human body washing, it is possible to obtain a feeling of washing with a soft strength.

  Further, as described in the first embodiment, the pressure in the pressure accumulating means increases and strong cleaning can be obtained by interlocking with the air pump.

  In addition, although demonstrated by the structure by a motor, the same pulsating operation | movement can be obtained also by changing a flow-path area slowly by adjustment of a spring etc. also in an electromagnetic system. Further, the flow rate control and the duty of the opening time and the closing time can be changed as in the first embodiment by changing the number of rotations of the motor.

  As described above, the fluid ejection device according to the present invention can intermittently eject a high-energy jet such as a high pressure, a large flow rate, and a high-speed jet from the nozzle, and can realize various jet patterns. It can also be used for applications such as equipment and fountains.

The block diagram of the fluid ejection apparatus in Embodiment 1 of this invention Sectional view of pressure accumulation means of the fluid ejection device Sectional view of flow path area variable means of the fluid ejection device Timing chart explaining the operation of the fluid ejection device Timing chart explaining the operation of the fluid ejection device Timing chart explaining the operation of the fluid ejection device Sectional drawing of the flow-path area variable means of the fluid ejection apparatus in Embodiment 2 of this invention Timing chart explaining the operation of the fluid ejection device Block diagram of a conventional fluid ejection device

Explanation of symbols

20 Accumulation means 21 Air pump (gas mixing means)
23 On-off valve (flow area variable means)
25 Wet washing nozzle (nozzle)
26 Bidet cleaning nozzle (nozzle)
27 Interlocking control means

Claims (11)

Gas mixing means for mixing pressurized gas into the fluid, flow path area variable means for changing the flow path area, interlock control means for controlling the operation of the gas mixing means and the operation of the flow path area variable means, A fluid ejection device comprising a nozzle that ejects a fluid mixed with gas by the gas mixing means. The fluid ejection device according to claim 1, further comprising a pressure accumulating unit upstream of the flow path area varying unit, and a gas mixing unit provided in the pressure accumulating unit. The fluid ejection device according to claim 1 or 2, wherein the interlock control means pulsatically controls the flow path area of the flow path area varying means. The fluid ejection device according to claim 1, wherein the interlock control unit controls the channel area of the channel area variable unit to open and close intermittently. 5. The fluid ejection device according to claim 4, wherein the interlock control means controls the ratio of the open time and the close time of the flow passage area of the flow passage area varying means. 6. The fluid ejection device according to claim 5, wherein the interlock control means controls the flow rate by controlling the ratio of the opening time and the closing time of the flow passage area of the flow passage area varying means. 6. The fluid ejection device according to claim 5, wherein the interlock control means pulsatically controls the ratio of the open time and the close time of the flow path area of the flow path area varying means. The fluid ejection device according to any one of claims 1 to 7, wherein the interlock control unit performs control by reducing the number of operations of the flow path area varying unit from the number of operations of the gas mixing unit. The fluid ejection device according to any one of claims 1 to 7, wherein the interlock control means controls the operation by reducing the operation time of the flow path area varying means from the operation time of the gas mixing means. The fluid ejection device according to claim 1, wherein the interlock control unit controls the flow channel area of the flow channel area varying unit to be small when the gas mixing unit is operated. A sanitary washing device comprising the fluid ejection device according to any one of claims 1 to 10.

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